CN111376938B

CN111376938B - End underframe of piggyback vehicle

Info

Publication number: CN111376938B
Application number: CN202010130278.6A
Authority: CN
Inventors: 邹怀森; 吴振国; 吕倩; 郑和平; 吴荣坤; 沈彩瑜
Original assignee: Beijing Railway Star Fortune High Tech Co ltd; Beijing Tf High Tech Co ltd; CRRC Qiqihar Rolling Stock Co Ltd
Current assignee: Beijing Railway Star Fortune High Tech Co ltd; Beijing Tf High Tech Co ltd; CRRC Qiqihar Rolling Stock Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2024-05-28
Anticipated expiration: 2040-02-28
Also published as: CN111376938A

Abstract

The invention discloses an end underframe of a piggyback vehicle, which comprises an end underframe body and an end connecting mechanism fixed at the rear end of the end underframe body; the end connection mechanism includes: the end connection hook has upward hook mouth, and the inner hook surface of the end connection hook is provided with an end groove extending transversely for placing and supporting upward the lower round shaft of the piggyback vehicle support. In addition, the end connection mechanism further includes an end longitudinal support for supporting the tray in a longitudinal direction and an end transverse limiter for defining a transverse position of the tray. The end chassis further includes a locking mechanism that can define the vertical position of the tray and a lateral stop mechanism that can assist in accurate return of the tray. The end chassis can be reliably connected with the supporting part and can be conveniently separated from the supporting part.

Description

End underframe of piggyback vehicle

Technical Field

The invention relates to the technical field of piggyback transportation, in particular to an end underframe of a piggyback vehicle.

Background

Piggyback transportation refers to a convenient transportation mode that a highway truck, a semitrailer or other highway vehicles load cargoes and then automatically drive the piggyback truck at a railway station at an origin and finish long-distance transportation through a railway, and after the highway vehicles reach a railway station at a destination, the highway vehicles can automatically drive the piggyback truck down and drive to the final destination.

The body of the piggyback car can generally comprise a body part and a supporting part which can be separated from the body part, when loading and unloading are carried out, the supporting part can be separated from the body part first, so that the road car can be conveniently opened and closed, and after loading and unloading are completed, the supporting part can be installed on the body part. The connection reliability of the body part and the supporting part of the existing piggyback car is not high, and the existing piggyback car is not easy to separate.

Therefore, the improvement of connection reliability and separation convenience of the body part and the supporting part of the piggyback is a technical problem which needs to be solved by the person skilled in the art.

Disclosure of Invention

In order to solve the technical problems, the invention provides an end underframe of a piggyback vehicle, which comprises an end underframe body and an end connecting mechanism fixed at the rear end of the end underframe body; the end connection mechanism includes:

the end connection hook, the hook mouth of end connection hook up, the interior hook face of end connection hook is equipped with along the tip recess of transversely extending, the tip recess is used for laying and upwards supporting the lower part circle axle of the support portion of piggyback car.

When the lower round shaft of the supporting part is placed in the end groove, the lower round shaft is supported by upward supporting force from the inner surface of the end groove, so that the lower round shaft is effectively supported vertically, and meanwhile, the inner surface of the end groove can also play a certain longitudinal limiting role on the lower round shaft. Therefore, the end underframe and the supporting part have better connection reliability. In addition, the lower round shaft can be separated from the end groove by applying an upward lifting force to the supporting part, so that the end underframe and the supporting part can be conveniently separated.

Drawings

FIG. 1 is a block diagram of an end chassis connected to a cradle portion provided by the present invention;

FIG. 2 is a block diagram of two end underframe mounted to a truck and interconnected;

FIG. 3 is a block diagram of the cradle;

FIG. 4 is a block diagram of an end chassis body and an end connection mechanism;

FIG. 5 is a side view of the structure of FIG. 4 mounted to a truck and connected to a bracket;

FIG. 6 is an exploded view of FIG. 4;

FIG. 7 is an enlarged view of the end longitudinal support of FIG. 4;

FIG. 8 is an enlarged view of the end lateral stop of FIG. 4;

FIG. 9 is an enlarged view of the first component of FIG. 4;

FIG. 10 is an enlarged view of the second component of FIG. 4;

fig. 11 is an enlarged view of the third composition of fig. 4.

FIG. 12 is an enlarged view of the third stringer and the fourth stringer of FIG. 4;

FIG. 13 is an enlarged view of the first and second bolster of FIG. 4;

FIG. 14 is an enlarged view of one of the end side bearings of FIG. 4;

FIG. 15 is an enlarged view of one of the container locks of FIG. 4;

FIG. 16 is an enlarged view of a set of stiffening plates of FIG. 4;

FIG. 17 is a block diagram of a first latch mechanism mounted to an end attachment hook;

FIG. 18 is a block diagram of the end attachment hook, the bracket and the first locking mechanism in a locked condition;

FIG. 19 is a side view of FIG. 18;

FIG. 20 is a side view of FIG. 18 in an unlocked state;

FIG. 21 is a diagram of the connection structure of the lock body and locking drive beam assembly;

FIG. 22 is an exploded view of FIG. 21;

Fig. 23 is a structural view of the first limiting portion, the second limiting portion, and the guide bush fixed to the end connecting hook;

FIG. 24 is a block diagram of a second latch mechanism mounted to an end attachment hook;

FIG. 25 is a block diagram of the end attachment hook, the bracket and the second locking mechanism in a locked condition;

FIG. 26 is a block diagram of the end attachment hook, the bracket and the second locking mechanism in an unlocked state;

FIG. 27 is a block diagram of the guide sleeve, second stop, and rotary support secured to the end attachment hook;

FIG. 28 is a diagram showing the connection of the push beam to the tie beam unit and the lock body;

Fig. 29 is a schematic structural view of a connecting sleeve;

FIG. 30 is a schematic view of the structure of a transfer block;

FIG. 31 is a schematic view of the structure of the lock head;

FIG. 32 is a schematic view of the structure of the lock body;

FIG. 33 is a schematic view of a structure of a rotary support;

FIG. 34 is a block diagram of a first transverse stop mechanism mounted to an end attachment hook;

FIG. 35 is a block diagram of one embodiment of a first lateral stop mechanism;

FIG. 36 is an exploded view of FIG. 35;

FIG. 37 is a schematic view of the structure of the stand;

FIG. 38 is a split block diagram of the first link;

FIG. 39 is a block diagram of another embodiment of the first lateral stop mechanism;

FIG. 40 is an exploded view of the attachment structure of the stop beam and attachment portion of FIG. 39;

FIG. 41 is a view of the relative positions of the second lateral stop mechanism and the end attachment hooks and brackets in the stopped condition;

FIG. 42 is an enlarged partial view of the inner portion of the ring of FIG. 41;

FIG. 43 is a view of the relative positions of the second lateral stop mechanism and the end attachment hooks and brackets in the disengaged condition;

FIG. 44 is an enlarged partial view of the inner portion of the ring of FIG. 43;

FIG. 45 is a block diagram of a second lateral stop mechanism mounted to an end attachment hook;

fig. 46 is an exploded view of fig. 45.

The reference numerals are explained as follows:

1a body part;

A 2-end chassis, a 21-end chassis body, a 2101 first cross member, a 2102 second cross member, a 2103 first cross member, a 2104 second cross member, a 2105 third cross member, a 2106 fourth cross member, a 2107 first bolster, a 2108 second bolster, a 2109-end draft sill, a 2110 impact seat, a 2111 container lock seat, a 2112-end side bearing, a 2113 reinforcement plate, a 2114 saddle mount, a 2115 bumper mount, a 22-end connection mechanism, a 221-end connection hook, a 221 a-end recess, a 221 b-end hook body, a 221 b-1-end hook body, a 221 b-2-end receiving cavity, a 221 c-end hook wall, a 221 d-end first connection hole, a 221 e-end second connection hole, a 222-end longitudinal support, a 222 a-end longitudinal support body, a 222 b-end wear plate, a 223-end lateral stop, a 223 a-end lateral stop slot, a 223b left guide surface, and a 223c right guide surface.

4-Bracket part, 412c lower round shaft, 421 upper hook, 422 guide limit.

The locking mechanism comprises a locking mechanism 5, a locking mechanism 51, a locking end 511, a first limiting end 512, a mounting groove 513, a second limiting end 514, a hinge shaft 52, a locking mounting plate 521, a bolt 522, a first limiting part 53, a locking driving beam assembly 54, a pushing beam 541, a connecting sleeve 541a, a locking elastic piece 541c supporting piece 542, a guide sleeve 543, a transmission beam 55 and a second limiting part.

The locking mechanism comprises a 5' locking mechanism, a 51' locking head, a 511' locking part, a 512' supporting part, a 513' arc notch, a 514' supporting groove, a 52' lock body, a 521' inserting section, a 522' sliding groove, a 523' large-size supporting section, a 524' small-size supporting section, a 53' locking driving beam assembly, a 531' pushing beam, a 531a ' connecting sleeve, a 531b ' first elastic piece, a 531c ' supporting piece, a 532' guiding sleeve, a 533' connecting beam unit, a 533a ' first locking connecting beam, a 533b ' second locking connecting beam, a 533c ' connecting block, a 533c-1' fixed hinge point, a 533c-2' first hinge point, a 533c-3' second hinge point, a 54' rotating supporting body, a 541' rotating shaft portion, a 542' first limiting portion, a 543' sliding rail and a 55' second limiting portion.

The device comprises a 6 transverse stop mechanism, a 61 support, a 611 through hole, a 612 mounting hole, a 613 connecting plate, a 614 guard plate, a 615 upper cover plate, a 62 stop beam, a 621 thick neck, a 622 thin neck, a 623 step surface, a 624 first locking piece, a 63 stop driving beam assembly, a 631 first connecting beam, a 6311 driving end, a 6312 connecting end, a 631a long plate, a 631a-1 strip guide hole, a 631b short plate, a 631b-1 penetrating hole, a 631c roller, a 631d-1 rod part, a 631d-2 head, a 631d-3 locking nut, a 631e strip guide groove, a 631f locking piece, a 631g gasket, a 632 second connecting beam, a 633 first hinge shaft, a 633a mounting plate, a 634 second hinge shaft, a 64 stop elastic piece and a 65 limiting piece.

The 6' transverse stop mechanism, the 61' stop beam, the 611' driving end, the 612' stop end, the 613' hinge shaft, the 613a ' large diameter section, the 613b ' small diameter section, the 613c ' third stop, the 613d ' spacer, the 62' stop beam, the 63' first stop, the 64' second stop and the 65' stop elastic member.

Detailed Description

In order to make the technical scheme of the present invention better understood by those skilled in the art, the following description is provided with reference to the accompanying drawings and the specific embodiments.

It should be noted that, in the description of the present invention, the longitudinal direction of the piggyback vehicle is taken as the front-rear direction. The front part can be the side where the head of the vehicle is located or the side where the tail of the vehicle is located; when facing forward, the left hand side is "left", and the top side of the head is "up". In the description of the present invention, the "longitudinal direction" is substantially the front-rear direction, the "lateral direction" is substantially the left-right direction, and the "vertical direction" is substantially the up-down direction, and in the lateral direction, a position relatively close to the lateral center of the railway track is inside and a position relatively far from the lateral center of the railway track is outside. In addition, in the description of the present invention, "first," "second," "third," and the like refer to words of description for convenience only and are not to be interpreted as indicating or implying any particular importance or order of sequential order.

As shown in fig. 1, the body of a piggyback vehicle generally includes a body portion 1 and a carrier portion 4. The body part 1 comprises an end chassis 2, the end chassis 2 being connected to the end of a bracket 4, both ends of the bracket 4 being connected to the two end chassis 2, respectively.

When a plurality of brackets 4 are provided, adjacent brackets 4 may be connected by two end underframes 2, as shown in fig. 2, in which the two end underframes 2 are connected by a coupler. And, one bogie is provided under each end chassis 2, that is, one end chassis 2 is correspondingly mounted on one bogie.

In the transportation process, the supporting part 4 is connected with the end underframe 2, so that the supporting part 4 is required to be reliably connected with the end underframe 2, and the supporting part 4 is required to be separated from the end underframe 2 during loading and unloading, so that the supporting part 4 is required to be conveniently separated from the end underframe 2. The end chassis 2 designed by the invention can be reliably connected with the supporting part 4 and can be conveniently separated from the supporting part 4.

As shown in fig. 1, the end chassis 2 includes an end chassis body 21 and an end connection mechanism 22. The specific structure of the end portion connecting mechanism 22 will be described first, and the specific structure of the end portion chassis body 21 will be described later.

End connection 22

As shown in fig. 4, the end connection mechanism 22 is attached to the rear end of the end chassis body 21. The end connection mechanism 22 includes an end connection hook 221. The hook mouth of the end connection hook 221 faces upward, and an end groove 221a extending in the lateral direction is provided on the inner hook surface of the end connection hook 221.

As shown in fig. 3, the end of the bracket 4 is provided with a lower circular shaft 412c.

As shown in fig. 5, in the connected state, the lower circular shaft 412c of the supporting part 4 is placed in the end groove 221a, and is supported by the upward supporting force from the inner surface of the end groove 221a, so that the vertical direction is effectively supported, and at the same time, the inner surface of the end groove 221a can also play a certain longitudinal limiting role on the lower circular shaft 412 c. Therefore, the end chassis 2 and the bracket 4 have good connection reliability. Further, by applying an upward lifting force to the supporting portion 4, the lower circular shaft 412c can be disengaged from the end portion groove 221a, facilitating the separation of the end portion chassis 2 from the supporting portion 4.

Further, as shown in fig. 4, the end connection mechanism 22 further includes an end longitudinal support 222, and the end longitudinal support 222 is located above the end connection hook 221, specifically, may be directly above or obliquely above.

As shown in fig. 7, the end longitudinal support 222 includes an end longitudinal support body 222a and end wear plates 222b fixed to front and rear ends of the end longitudinal support body 222 a.

As shown in fig. 3, the end of the supporting portion 4 is provided with an upper hook 421, and the hook mouth of the upper hook 421 faces downward.

As shown in fig. 5, in the connected state, the end portion vertical supporting body 222a extends into the hook opening of the upper hook 421, and both are hooked together, and at the same time, the front end portion wearing plate 222b of the front end abuts against the front side of the inner hook surface of the upper hook 421, and the rear end portion wearing plate 222b abuts against the rear side of the inner hook surface of the upper hook 421, thereby performing a vertical supporting function on the supporting portion 4. In this way, the connection reliability of the end chassis 2 and the supporting portion 4 can be further improved, and the separation convenience of the end chassis 2 and the supporting portion 4 is not affected.

As shown in fig. 7, the upper portion of the front end wear plate 222b is inclined rearward relative to the lower portion, and the upper portion of the rear end wear plate 222b is inclined forward relative to the lower portion. Meanwhile, the inner surface of the end groove 221a forms an end guide surface capable of guiding the end chassis 2 to rotate around the lateral direction when being engaged with the lower circular shaft 412 c. So arranged, when the supporting part 4 is connected with the end underframe 2, the clamping degree of the end longitudinal supporting body 222a and the upper hook 421 is gradually increased along with the gradual falling of the supporting part 4, so that the upper hook 421 is convenient to firmly hook the end longitudinal supporting body 222a; when the supporting portion 4 is separated from the end portion chassis 2, an upward lifting force (force F in fig. 5) is applied to a position of the end portion chassis 2 near the rear end, and when the end portion chassis 2 is lifted to a certain height, the end portion chassis 2 rotates around the lateral direction (arrow direction in fig. 5) with the lifting force acting position as a fulcrum under the guiding action of the inner surface of the end portion groove 221a, so that the clamping degree of the end portion longitudinal supporting body 222a and the upper portion hook 41 is gradually weakened, and the lower portion circular shaft 412c slides in the end portion groove 221a, thereby facilitating the separation of the end portion chassis 2 and the supporting portion 4. In short, by such arrangement, the connection reliability and the separation convenience of the end chassis 2 and the bracket 4 can be improved.

In the illustrated embodiment, the top of the end portion longitudinal support body 222a is a trapezoid structure with a small top and a large bottom (see fig. 7), and the height of the end portion wear plate 222b at the rear end is lower than that of the end portion wear plate 222b at the front end, so that the end portion chassis 2 can be ensured to smoothly rotate around the transverse direction without interference. Of course, the structure for avoiding interference is not limited thereto, and may be appropriately adjusted in practical implementation. In fig. 7, the end wearing plate 222b is connected with the end longitudinal support body 222a by bolts and nuts, the end longitudinal support body 222a is of a hollow structure, and the bottom is provided with a slotted hole, so that the replacement of the end wearing plate 222b is facilitated.

In the illustrated embodiment, the end portion groove 221a is a cylindrical groove (see fig. 4), so that the inner surface thereof can perform the guiding function when being engaged with the cylindrical lower circular shaft 412c, and of course, the end portion groove 221a is not limited to the cylindrical groove in practice.

Further, as shown in fig. 4, the end connection mechanism 22 further includes an end lateral limiter 223, where the end lateral limiter 223 is located above the end connection hook 221, specifically, directly above or obliquely above, and the end lateral limiter 223 is located in front of the end longitudinal support 222, specifically, directly ahead or obliquely ahead.

As shown in fig. 8, the end lateral stopper 223 includes an end lateral stopper groove 223a.

As shown in fig. 3, the end of the bracket 4 is provided with a guide stopper 422.

As shown in fig. 5, in the connected state, the guide stopper 422 is inserted into the end portion lateral stopper groove 223a, and the left side groove wall and the right side groove wall of the end portion lateral stopper groove 223a are respectively located at the left side and the right side of the guide stopper 422 to define the lateral position of the guide stopper 422. In this way, the connection reliability between the end chassis 2 and the bracket 4 can be further improved.

In the illustrated embodiment, the left side groove wall upper portion and the right side groove wall upper portion of the end portion lateral limit groove 223a respectively form a left guide surface 223b and a right guide surface 223c (see fig. 8), the upper side of the left guide surface 223b is inclined to the left with respect to the lower side, and the upper side of the right guide surface 223c is inclined to the right with respect to the lower side, so that the guide limit piece 422 can be guided into the end portion lateral limit groove 223 a.

In fig. 8, the end portion transverse limiting member 223 is formed by a U-shaped plate and two rib plates, and the structure of the end portion transverse limiting member 223 is not limited to this in practical implementation.

End chassis body 21

As shown in fig. 4 and 6, the end chassis body 21 includes a first cross beam 2101, a second cross beam 2102, a first side beam 2103, a second side beam 2104, a third side beam 2105, a fourth side beam 2106, a first bolster 2107, a second bolster 2108, an end draft sill 2109, an impact seat 2110, an end side bearing 2112, a saddle mount 2114, and a bumper mount 2115 (see fig. 11).

As shown in fig. 4, the first cross member 2101 is disposed in front of the second cross member 2102, the first side member 2103 and the second side member 2104 are fixed to rear sides of both ends of the first cross member 2101, the third side member 2105 and the fourth side member 2106 are fixed to front sides of both ends of the second cross member 2102, the rear end of the first side member 2103 and the front end of the third side member 2105 are fixed to right ends of the first sleeper beam 2107, and the rear end of the second side member 2104 and the front end of the fourth side member 2106 are fixed to left ends of the second sleeper beam 2108, respectively, thereby forming a frame. The end draft sill 2109 is located inside the frame, the front end of the end draft sill 2109 is fixed to the first cross beam 2101, the rear end of the end draft sill is fixed to the second cross beam 2102, and the left end of the first sleeper beam 2107 and the left end of the second sleeper beam 2108 are fixed to the left side and the right side of the end draft sill 2109 respectively. The beam to beam fixation may be welding. The impact seat 2110 is fixed on the front side of the first beam 2101, and specifically can be riveted or bolted, and the position of the impact seat 2110 is connected with the coupler to bear the impact of the coupler. The end connection 22 is secured to the second cross member 2102, which may be welded in particular. One end side bearing 2112 is secured to the first bolster 2107 and the other end side bearing 2112 is secured to the second bolster 2108, which may be welded in particular.

As shown in fig. 9, the second cross member 2102 and the end connection hooks 221 constitute a first composition. In the drawing, two end connection hooks 221 are provided, one fixed to the lower side of the left end of the second cross member 2102 and the other fixed to the lower side of the right end of the second cross member 2102. Referring to fig. 4, two end longitudinal supports 222 are further provided, one fixed to the rear left end of the second cross member 2102, the other fixed to the rear right end of the second cross member 2102, and two end lateral stoppers 223 are further provided, one fixed to the upper left end of the second cross member 2102, and the other fixed to the upper right end of the second cross member 2102.

As shown in fig. 10, the first cross member 2101, the first side member 2103, the second side member 2104, and the impact socket 2110 comprise a second composition.

As shown in fig. 11, saddle mount 2114 and bumper mount 2115 are fixed inside end draft sill 2109, forming a third assembly. The end draft sill 2109 includes a parallel draft upper plate and a draft lower plate with a web disposed therebetween, the draft upper plate having a plate opening for exposing saddle mount 2114.

As shown in fig. 12, the third longitudinal beam and the fourth longitudinal beam have the same structure and each comprise a channel beam with an upward notch, a cover plate covering the notch of the channel beam and a round tube transversely penetrating the channel beam.

As shown in fig. 13, the first and second bolster structures are identical, and each includes a bolster upper plate, a bolster lower plate, two bolster webs, and two bolster spacers.

As shown in fig. 6, the two end side bearings are identical in construction. As shown in fig. 14, the end bearing includes a side bearing bottom plate, three side bearing risers, a side bearing adjustment plate, and a side bearing wear plate. The three side bearing vertical plates are connected above the side bearing bottom plate and are connected in an I shape. The side bearing adjusting backing plate is connected below the side bearing bottom plate, the side bearing abrasion plate is connected below the side bearing adjusting backing plate, and the side bearing adjusting backing plate, the side bearing abrasion plate and the side bearing abrasion plate are connected together through a bolt, a nut and a washer.

Further, as shown in fig. 4, the end chassis body 21 further includes two container locking receptacles 2111. One container lock 2111 is fixed to the upper sides of the third girder 2105, the first sleeper beam 2107 and the second cross beam 2102, and the other container lock 2111 is fixed to the upper sides of the fourth girder 2106, the second sleeper beam 2108 and the second cross beam 2102, and specifically, can be fixed by welding. In the figure, two container locking bases 2111 are identical in structure.

As shown in fig. 15, the container locking base 2111 includes a horizontally arranged container base, longitudinal container risers connected to the left and right sides of the container base, three transverse container risers connected between the two longitudinal container risers, one transverse container riser at an end of the container base, and the other two transverse container risers at a middle of the container base. A rib plate is arranged between the two transverse container vertical plates in the middle and the container bottom plate, and the rib plate is positioned between the two transverse container vertical plates in the middle.

Further, as shown in fig. 6, the end chassis body 21 further includes a reinforcement plate 2113. In fig. 6, two sets of stiffening plates 2113 are provided, one set being connected between the second cross member 2102 and the third longitudinal member 2105, and the other set being connected between the second cross member 2102 and the fourth longitudinal member 2106. The two sets of stiffening plates 2113 are identical in structure. As shown in fig. 16, each set of reinforcing plate 2113 includes one lateral gusset and two triangular gussets.

Further, as shown in fig. 1, the end chassis 2 further includes a locking mechanism (first type of locking mechanism 5 in fig. 1), and as shown in fig. 9, the end connecting hook 221 includes an end hook main body 221b, the end hook main body 221b includes two end hook portions 221b-1 arranged at intervals in a lateral direction and an end receiving chamber 221b-2 formed between the two end hook portions 221b-1, the end receiving chamber 221b-2 being for mounting the locking mechanism. By arranging the locking mechanism, the risk that the end underframe 2 and the supporting part 4 are separated along the vertical direction when the end underframe 2 and the supporting part 4 travel to a fluctuating road section in the transportation process can be avoided, and the connection reliability of the end underframe 2 and the supporting part 4 is further improved.

In fig. 9, the end connection hook 221 further includes an end hook plate 221c covering the outer hook surface of the end hook main body 221b, the end hook plate 221c is provided with an end first connection hole 221d, and the end first connection hole 221d is communicated with the end receiving cavity 221b-2, so that the unlocking component can extend into the end receiving cavity 221b-2 through the end first connection hole 221d to unlock the locking mechanism, and after the unlocking, the supporting part 4 can be separated from the end chassis 2. In addition, in fig. 5, the end connection hook 221 is further provided with an end second connection hole 221e.

Two types of locking mechanisms are shown, a first type of locking mechanism is shown in fig. 17-23, and a second type of locking mechanism is shown in fig. 24-33. Both are described one by one below.

First kind of locking mechanism

As shown in fig. 17 to 23, the locking mechanism 5 includes:

The lock body 51 is hinged to the end connecting hook 221 by a hinge shaft 52, one end of the lock body 51 is a locking end 511, the other end is a first limiting end 512, and the hinge shaft 52 is located between the locking end 511 and the first limiting end 512.

A first stopper 53, the first stopper 53 being fixed in the end accommodating chamber 221b-2 (see fig. 23);

a locking drive beam assembly 54 coupled to the lock body 51;

In the locked state, as shown in fig. 19, the first limiting end portion 512 abuts against the first limiting portion 53 from top to bottom, and the locking end portion 511 abuts against the supporting portion 4 to lock the supporting portion 4; in the unlocked state, as shown in fig. 20, the locking drive beam assembly 54 can drive the first limiting end portion 512 to disengage from the first limiting portion 53 from bottom to top, and the locking end portion 511 to rotate away from the supporting portion 4.

With this structure, as shown in fig. 19 and 20, if there is a separation trend between the supporting portion 4 and the end connecting hook 221 during locking, the supporting portion 4 will generate an upward force on the locking end 511 to drive the locking end 511 to rotate counterclockwise, and the supporting force generated by the first limiting portion 53 on the first limiting end 512 from bottom to top can block the rotation of the lock body 51 in the counterclockwise direction, so that the position of the locking end 511 is ensured to be unchanged, and the supporting portion 4 can be reliably locked; when unlocking, the locking driving beam assembly 54 can drive the first limiting end portion 512 to separate from the first limiting portion 53 from bottom to top, the lock body 51 can rotate clockwise, the rotation direction of the locking driving beam assembly is opposite to the stop direction of the first limiting portion 53, the locking end portion 511 and the supporting portion 4 can be smoothly separated, smooth unlocking of the supporting portion 4 can be achieved, and separation of the supporting portion 4 and the end portion connecting hooks 221 is not affected.

Here, the embodiment of the present invention is not limited to the structure of the first limiting portion 53, and may be plate-shaped or block-shaped; similarly, the number of the first limiting portions 53 is not limited in the embodiment of the present invention, and may be one or may include a plurality of independent limiting members, as long as the above-described technical effects can be achieved.

In one detailed arrangement, as shown in FIG. 21, the locking drive beam assembly 54 may include a push beam 541, a guide sleeve 542, and a drive beam 543, the guide sleeve 542 being secured within the end receiving chamber 221b-2 (see FIG. 23), the push beam 541 being slidably coupled to the guide sleeve 542, one end of the drive beam 543 being hingeable with the lock body 51 and the other end being hingeable with the push beam 541.

Thus, when the push beam 541 is moved upwards by the driving force, the transmission beam 543 hinged to the push beam 541 can convert the linear motion of the push beam 541 into the rotational motion of the lock body 51, so as to transmit the unlocking driving force to the lock body 51, and unlock the lock body 51 can be achieved; when the driving force disappears, the pushing beam 541 can automatically slide down along the guide sleeve 542 by virtue of its own gravity and the like, and drives the lock body 51 to rotate reversely, so as to realize automatic locking of the lock body 51, and of course, the pushing beam 541 can be driven to reset and lock by the reverse driving force provided by an external device.

The specific push beam 541 may face the end first connection hole 221d (refer to fig. 19 and 20) so that the unlocking member can contact the push beam 541 through the end first connection hole 221d, thereby applying an upward unlocking driving force to the push beam 541.

It should be noted that, the embodiment of the present invention is not limited to the source of the driving force applied to the push beam 541 during unlocking, and a manual driving scheme may be adopted, for example, an unlocking member such as an unlocking lever may be provided, and when unlocking is required, the unlocking member may be manually operated by a worker to generate the driving force for the push beam 541; or an automatic driving scheme can be adopted, at this time, the power sources can be motors, air cylinders, oil cylinders and the like, the power sources can be installed on a vehicle body or ground equipment, the power sources can be specifically selected according to actual conditions, and a transmission mechanism can be further arranged between the power sources and the pushing beams 541 so as to transmit the driving force of the power sources.

The beam section of the push beam 541 above the guide sleeve 542 may further be provided with a connection sleeve 541a, as shown in fig. 22, where the connection sleeve 541a may be a U-shaped plate, and a bottom plate portion of the U-shaped plate may be connected to the push beam 541 and may form a support with the guide sleeve 542, so as to serve as a limiting member for downward movement of the push beam 541, and the transmission beam 543 may be hinged between two side plate portions of the U-shaped plate.

In fact, the downward movement limitation of the push beam 541 may be realized by the cooperation of the first limiting end 512 and the first limiting portion 53, so that the connecting sleeve 541a may not exist; or the transmission beam 543 can be used for limiting, the transmission beam 543 and the pushing beam 541 are hinged, and the transmission beam 543 and the pushing beam 541 are usually arranged in an included angle in the actual working process, and can also be used as a limiting component for downward movement of the pushing beam 541.

In the above-mentioned scheme, the transmission beam 543 converts the linear motion of the push beam 541 into the rotational motion of the lock body 51, and in fact, other schemes may be adopted besides this scheme, for example, a guide hole may be provided on the lock body 51, the push beam 541 may be hinged in the guide hole, and when the push beam 541 generates an axial displacement, the hinge shaft of the push beam 541 may slide in the guide hole to naturally drive the lock body 51 to rotate, so that conversion from the linear motion into the rotational motion can also be achieved.

Further, the locking mechanism 5 may further include a locking elastic member 541b, and one end of the locking elastic member 541b may act on the push beam 541, and the unlocking process is a process in which the deformation amount of the locking elastic member 541b is increased to collect the elastic force. So configured, when the driving force acting on the push beam 541 is lost, the elastic force of the locking elastic member 541b can be released to cooperate with the gravity of the push beam 541 itself to jointly drive the reset and lock of the lock body 51.

Specifically, the locking elastic member 541b may be a spring, which may be externally mounted to the push beam 541, and the lower end portion of the push beam 541 may be provided with a support member 541c, and both ends of the spring may respectively act on the guide sleeve 542 and the support member 541 c. The push beam 541 can act as a spring column, which is beneficial to preventing radial movement of the spring in the expansion process, and has positive effects on improving the stability of the structure and the reliability of power transmission; with this structure, in the unlocked state, the push beam 541 can be displaced upward, the locking elastic member 541b can be compressed, and in the restoration of the lock, the push beam 541 can be displaced downward, and the locking elastic member 541b can be released.

In fact, in the locked state, the locking elastic element 541b may have a certain pre-compression amount, that is, the locking elastic element 541b may still provide a certain elastic force during locking, which has a positive effect on ensuring the stability of the locked state of the lock body 51, and may avoid automatic unlocking of the lock body 51 when the railway vehicle passes through a curve.

To conveniently adjust the pre-compression amount, the support 541c may be a nut, so that the distance between the support 541c and the guide sleeve 542 may be adjusted by changing the position where the nut is screwed, and thus the pre-compression amount of the locking elastic member 541b in the locked state may be adjusted.

In the unlocked state, the locking elastic member 541b may be in a stretched state, and at this time, the installation position of the locking elastic member 541b may be changed, specifically, it may be disposed between the connection sleeve 541a and the guide sleeve 542, and both ends thereof may be fixedly connected to the connection sleeve 541a and the guide sleeve 542, so as to transmit the tensile force.

The lock body 51 may be provided with a mounting groove 513, and the transmission beam 543 may be hinged in the mounting groove 513, so that the thickness of the locking mechanism provided by the invention in the axial direction of the hinge shaft of the transmission beam 543 and the lock body 51 may be smaller, and the overall structure may be more compact. In addition, the mounting groove 513 may be provided in the transmission beam 543, and then the lock body 51 may be hinged in the mounting groove 513 of the transmission beam 543; alternatively, the mounting groove 513 may not be provided, and in this case, the thickness of the assembly formed by the transmission beam 543 and the lock body 51 in the axial direction of the hinge shaft between the transmission beam 543 and the lock body 51 may be relatively large.

Further, the locking mechanism 5 may further include a second limiting portion 55 fixedly disposed, the second limiting portion 55 may be fixed in the end portion accommodating cavity 221b-2, and the structure thereof may be similar to that of the first limiting portion 53, which will not be repeated herein; the lock body 51 may further include a second limiting end 514, and in the locked state, the second limiting end 514 may abut against the second limiting portion 55 from bottom to top.

In this way, in the locked state, the lock body 51 can form a three-point supporting scheme, the stress of the lock body 51 is more balanced, and the lock body 51 is more reliable in locking the supporting part 4.

In detail, the lock body 51 may include two locking arms disposed at an angle, the two locking arms may be formed in a substantially L shape, and the hinge shaft 52 may be disposed at a junction of the two locking arms, i.e., at a corner of the L shape, wherein an end of one locking arm away from the hinge shaft 52 may be the locking end 511, and an end of the other locking arm away from the hinge shaft 52 may be the first limiting end 512; a small included angle (< 180 degrees) and a large included angle (> 180 degrees) are formed between the two locking arms, wherein the side where the small included angle is located is the inner end of the connection, the side where the large included angle is located is the outer end of the connection, and the outer end can be used as the second limiting end 514.

Referring to fig. 19, in the locked state, the first limiting portion 53 may generate a supporting force on the first limiting end portion 512 from bottom to top, the second limiting portion 55 may generate a supporting force on the second limiting end portion 514 from top to bottom, and then the supporting portion 4 is matched with an upward pushing force generated on the locking end portion 511, so that the stress of the lock body 51 may be more balanced; moreover, by the interaction of the three stress points, the hinge shaft 52 is substantially in an unstressed state, which has a positive effect on ensuring the reliability of the locking mechanism.

The locking mechanism provided by the invention can be installed on the end connecting hook 221, besides the installation supporting point formed by the guide sleeve 542, the first limiting part 53 and the second limiting part 55, the hinge shaft 52 can also be used as an installation supporting point, specifically, in combination with fig. 22, the outer wall of the hinge shaft 52 can be provided with a slot, the slot can be internally provided with a locking installation plate 521 (the connection mode of the locking installation plate 521 and the hinge shaft 52 can also be directly welded), the locking installation plate 521 can be connected with the end connecting hook 221 through a connecting piece in the form of a bolt 522 and the like, and the locking installation plate 521 and the end connecting hook 221 can also be fixedly connected through the welding and the like besides the bolt connection.

Second kind of locking mechanism

The locking mechanism 5' can realize the vertical locking of the supporting part 4 and the end connecting hook 221 when in locking so as to ensure the reliable connection and running safety of the supporting part 4 and the end connecting hook 221, and the convenience of the separation of the supporting part 4 and the end connecting hook 221 is not influenced when in unlocking.

As shown in fig. 24 to 33, the locking mechanism 5' includes:

a locking head 51', the locking head 51' being rotatably coupled to the end connection hook 221, the locking head 51' being provided with a locking portion 511' and a supporting portion 512' at both sides of a rotation center line thereof, respectively;

A lock body 52', the lock body 52' being slidably connected to the end connection hook 221;

a locking drive beam assembly 53 'in driving communication with the lock body 52'; in the locked state, the lock body 52' is supported by the support portion 512' from bottom to top so that the locking portion 511' presses the supporting portion; in the unlocked state, the locking drive beam assembly 53' can drive the lock body 52' to displace in a direction away from the locking head 51', and the support portion 512' can rotate downward about the rotation center line to rotate the locking portion 511' upward and away from the carrier portion.

With this structure, in conjunction with fig. 25, if the supporting portion and the end connection hook 221 are separated in the locked state, the supporting portion will generate an upward force on the locking portion 511 'to drive the lock head 51' to rotate counterclockwise, and the supporting force of the lock body 52 'to the supporting portion 512' from bottom to top can block the rotation of the lock head 51 'in the counterclockwise direction, so that the position of the locking portion 511' is not changed, and the supporting portion can be locked reliably; referring to fig. 26, when unlocking, the locking drive beam assembly 53' may drive the lock body 52' to slide in a direction away from the locking head 51', the support portion 512' may be rotated downward about the rotation center line, and the locking portion 511' may be rotated upward to unlock the bracket without affecting the separation of the bracket 4 from the end connection hook 221.

The rotation setting of the lock head 51 'may be specifically a hinge setting, and in this case, a hinge shaft may be provided for the lock head 51', and the hinge shaft may be fixed to the end connection hook 221 and located between the locking portion 511 'and the supporting portion 512'. Alternatively, a rotary support 54' may be provided, and the rotary support 54' may be fixed to the end connection hook 221, and may have a rotary shaft 541' thereon, the rotary shaft 541' having an arcuate cylindrical surface, and the locking head 51' may have an arcuate notch 513' that mates with the rotary shaft 541', where the outer diameter of the rotary shaft 541' is substantially identical to the inner diameter of the arcuate notch 513 '. During assembly, the lock head 51' can be inserted into the rotation shaft 541' through the arc-shaped notch 513', and can rotate by taking the central axis of the rotation shaft 541' as a rotation center line, so that the rotation setting of the lock head 51' can be realized.

In unlocking, the rotation of the locking head 51' may be achieved by means of the offset of the center of gravity, the center of gravity of the locking head 51' may be offset from the rotation center line in the longitudinal direction and located at the side of the support portion 512', specifically, referring to fig. 25, the arc-shaped notch 513' may be provided at the right side of the center of gravity of the locking head 51', so that when the lock body 52' is displaced leftward, the locking head 51' may naturally rotate counterclockwise to release the locking of the bracket.

And/or, a second elastic member in the form of a spring or the like may be provided for the lock head 51', and in the locked state, the second elastic member may gather elastic forces in the form of tensile force/compressive force or the like, and when the lock body 52' is gradually far away, the elastic force of the second elastic member may be released, so as to drive the lock head 51' to automatically rotate and unlock. In comparison, the two modes can realize automatic rotation of the lock head 51' during unlocking, and when the lock head is in specific implementation, the lock head can be selected by a person skilled in the art according to actual needs.

In connection with fig. 27, in the specific assembly, the number of the rotary supporting bodies 54' may be two, so that the locking heads 51' may be mounted on the two rotary supporting bodies 54', the stability of the installation of the locking heads 51' is higher, and the space between the two rotary supporting bodies 54' may be used to insert the locking bodies 52', the locking heads 51', the locking bodies 52' and the connection structure of the rotary supporting bodies 54' may be more compact.

As shown in fig. 33, the rotary support 54 'may further include a first limiting portion 542', where the first limiting portion 542 'may be angular, and in the unlocked state, the first limiting portion 542' may abut against the support portion 512 'to limit the downward rotation of the support portion 512', and may also support a gap in which the lock 52 'is inserted from below the support portion 512', so as to facilitate reinsertion of the lock 52 'and further support the support portion 512'.

Here, the embodiment of the present invention is not limited to the supporting height of the first limiting portion 542', and in the specific implementation, a person skilled in the art may set the supporting height according to actual needs, so long as the locking portion 511' can unlock the supporting portion and reserve the insertion gap of the lock body 52' when the first limiting portion 542' and the supporting portion 512' are supported.

Further, as shown in fig. 31, a supporting groove 514 'may be further provided on the lock head 51', and the first limiting portion 542 'may be inserted into the supporting groove 514' when the lock is unlocked. It will be appreciated that the depth of the first limiting portion 542' inserted into the supporting slot 514' also actually determines the supporting height of the supporting portion 512' when unlocked, and thus, in specific practice, the supporting height of the supporting portion 512' can be adjusted by adjusting the depth of the supporting slot 514 '.

Referring to fig. 32, the lock body 52' may include an insertion section 521' having an inclined guide surface, and the insertion section 521' may be inserted from below the support 512' and may be supported with the inclined guide surface by the support 512' to gradually bring the support 512' to rotate upward, the locking portion 511' to rotate downward, and lock the bracket when locking is performed.

The lock body 52' may include only the insertion section 521', in which case, in the locked state, the lock body 52' may still be supported by the inclined guide surface and the support portion 512', and in the unlocked state, the lock body 52' may be completely separated from the support portion 512' or may be supported by the inclined guide surface and the support portion 512', that is, in the unlocked state, the lock body 52' may not be completely separated from the lock head 51', and at this time, the lock body 52' may itself limit the rotation of the lock head 51', and since the lock head 51' is still on the lock body 52', the problem that the lock body 52' cannot be inserted does not exist, and the first limiting portion 542' may not exist.

In the solution of the drawing, still referring to fig. 32, the lock body 52 'may include a three-part structure, which is a large-sized support section 523' with a larger vertical dimension, a small-sized support section 521 'with a smaller vertical dimension, and a small-sized support section 524' with a smaller vertical dimension, wherein the large-sized support section 523 'has a first support plane, the small-sized support section 524' has a second support plane, and the lock body 52 'may be supported by the first support plane and the support portion 512' in the locked state, and the lock body 52 'may be supported by the second support plane and the support portion 512' in the unlocked state.

Since the surface supported by the support portion 512 'is a plane, stability of the lock head 51' in unlocking and locking can be high; based on the above design, the support portion 512' and the lock body 52' are not completely separated when unlocked, the small-sized support section 524' will naturally form the rotation limit of the support portion 512', and the first limit portion 542' may not exist.

As a variation of the embodiment of fig. 32, the lock body 52' may also include only a large-sized support section 523' (or a small-sized support section 524 ') and an insertion section 521', which also performs the function of the lock body 52 '.

A guide structure for guiding the sliding direction of the lock body 52' may be provided between the lock body 52' and the rotation support body 54 '.

Specifically, one of the lock body 52 'and the rotation support body 54' may be provided with a slide groove 522', and the other may be provided with a slide portion that matches the slide groove 522', and the slide portion may be inserted into the slide groove 522 'and may slide along the slide groove 522'. The sliding portion may be an integral structure, such as an elongated sliding rail 543' shown in the drawings, or may be a split structure, for example, may include a plurality of sliding blocks arranged at intervals.

Further, the second limiting portion 55 'may be fixedly disposed, and the second limiting portion 55' may be fixed in the end portion accommodating cavity 221b-2, and in the locked state, the second limiting portion 55 'may be abutted against the supporting portion 512' from top to bottom.

In this way, in the locking state, the lock head 51' can form a three-point supporting scheme, the stress of the lock head 51' is more balanced, and the lock head 51' can lock the supporting part more reliably; moreover, due to the interaction of the three force points, there is substantially no force acting between the arc-shaped indentation 513 'and the rotation shaft 541', which has a positive effect on ensuring the reliability of the locking mechanism.

Here, the embodiment of the present invention is not limited to the structure of the second limiting portion 55', and may be plate-shaped or block-shaped; similarly, the number of the second limiting portions 55' is not limited, and may be one or may include a plurality of independent limiting members, so long as the above-described technical effects can be achieved.

Referring to fig. 28 in combination with fig. 25 and 26, in an exemplary embodiment, the locking drive beam assembly 53 'may include a push beam 531', a guide sleeve 532', and a beam connecting unit 533', and the guide sleeve 532 'may be fixedly disposed, specifically, may be installed in the end receiving cavity 221b-2 (refer to fig. 27), the push beam 531' may be slidably connected to the guide sleeve 532', and one end of the beam connecting unit 533' may be hinged to the push beam 531', and the other end may be hinged to the lock body 52'.

With this structure, when the push beam 531' is moved upward by the driving force, the hinged beam connecting unit 533' can drive the lock body 52' to slide in a direction away from the lock head 51', and then the lock head 51' can rotate and unlock by itself; when the driving force disappears, the push beam 531 'can automatically slide down along the guide sleeve 532' by means of gravity and the like, and the lock body 52 'is driven to slide towards the direction close to the lock head 51' by the beam connecting unit 533', so as to support the support part 512' again, and the lock head 51 'can reversely rotate to realize automatic locking, and of course, the push beam 531' can be driven to reset and lock by the reverse driving force provided by external equipment.

The specific push beams 531' may face the end first connection holes 221d (refer to fig. 25 and 26) so that the unlocking member can contact the push beams 531' through the end first connection holes 221d, thereby applying an upward unlocking driving force to the push beams 531 '.

It should be noted that, the embodiment of the present invention is not limited to the source of the driving force applied to the push beam 531 'during unlocking, and a manual driving scheme may be adopted, for example, an unlocking member such as an unlocking lever may be provided, and when unlocking is required, the unlocking member may be manually operated by a worker to generate the driving force to the push beam 531'; or an automatic driving scheme can be adopted, at this time, the power sources can be motors, air cylinders, oil cylinders and the like, the power sources can be installed on a vehicle body or ground equipment, the power sources can be specifically selected according to actual conditions, and a transmission mechanism can be further arranged between the power sources and the push beams 531' to transmit the driving force of the power sources.

The beam section of the push beam 531 'above the guide sleeve 532' may further be provided with a connecting sleeve 531a ', as shown in fig. 29, the connecting sleeve 531a' may specifically include a pipe portion and a hinge portion, the pipe portion may be mounted on the upper portion of the push beam 531 'by means of threaded connection, welding, interference fit, or the like, the hinge portion may include two hinge plates disposed opposite to each other, and the aforementioned beam connecting unit 533' may be hinged between the two hinge plates.

The connecting sleeve 531a ' and the guiding sleeve 532' cooperate to serve as a limiting member for the downward movement of the push beam 531' so as to limit the maximum downward movement distance of the push beam 531', and also limit the displacement distance of the lock body 52 '.

In fact, the downward movement limitation of the push beam 531 'may be realized by the cooperation of the lock head 51' and the second limiting portion 55', so that the connecting sleeve 531a' may not exist; or the connection end parts of the connection beam unit 533' and the push beam 531' can be used for limiting, and the connection end parts and the push beam 531' adopt a hinged scheme, and are usually arranged in an included angle in the actual working process, so that even if the connection sleeve 531a ' does not exist, the connection end parts can also be used as limiting parts for downward movement of the push beam 531 '.

Further, a first elastic member 531b 'may be further included, and one end of the first elastic member 531b' may act with the push beam 531', and in the unlocked state, the deformation amount of the first elastic member 531b' may be increased to gather elastic force. So configured, when the driving force acting on the push beam 531 'disappears, the elastic force of the first elastic member 531b' can be released to cooperate with the gravity of the push beam 531 'itself to jointly drive the reset and lock of the lock head 51'.

Specifically, the first elastic member 531b 'may be a spring, which may be externally mounted on the push beam 531', and the lower end portion of the push beam 531 'may be provided with a supporting member 531c', and two ends of the spring may respectively abut against the guide sleeve 532 'and the supporting member 531 c'. The push beams 531' can act as spring columns, are beneficial to preventing radial movement of springs in the extending and retracting process, and have positive effects on improving the stability of the structure and the reliability of power transmission; with this structure, in the unlocked state, the push beam 531 'can be displaced upward, the first elastic member 531b' can be compressed, and in the restoration of the lock, the push beam 531 'can be displaced downward, and the first elastic member 531b' can be released again.

In fact, in the locked state, the first elastic member 531b 'may have a certain pre-compression amount, that is, the first elastic member 531b' may still provide a certain elastic force when locked, which has a positive effect on ensuring the stability of the locked state of the lock head 51', and may avoid the automatic unlocking of the lock head 51' when the railway vehicle passes through the curve.

To conveniently adjust the pre-compression amount, the support 531c 'may be a nut, so that the interval between the support 531c' and the guide bush 532 'may be adjusted by changing the position where the nut is screwed, and thus the pre-compression amount of the first elastic member 531b' may be adjusted in the locked state.

In the unlocked state, the first elastic member 531b 'may be in a stretched state, and at this time, the installation position of the first elastic member 531b' may be changed, specifically, it may be disposed between the connecting sleeve 531a 'and the guide sleeve 532', and both ends thereof may be fixedly connected with the connecting sleeve 531a ', the guide sleeve 532', so as to transmit the tensile force.

The link unit 533 'may be a structure formed by combining a plurality of links, and in an exemplary aspect, the link unit 533' may include a first locking link 533a ', a second locking link 533b', and an adapting block 533c ', the adapting block 533c' may be provided with a non-collinear fixed hinge point 533c-1', a first hinge point 533c-2', and a second hinge point 533c-3', the fixed hinge point 533c-1' may be fixedly disposed, and may be fixed to the end link 221, one end of the first locking link 533a 'may be hinged with the push beam 531', the other end may be hinged with the first hinge point 533c-2', one end of the second locking link 533b' may be hinged with the lock body 52', and the other end may be hinged with the second hinge point 533c-3'.

With this structure, as shown in fig. 25 and 26, when the push beam 531 'moves upward, the first locking connecting beam 533a' can be driven to move upward, and then the transfer block 533c 'can be driven to rotate clockwise around the fixed hinge point 533c-1', and the transfer block 533c 'drives the second locking connecting beam 533b', the lock body 52 'to move leftward, and the lock head 51' can rotate counterclockwise to unlock the supporting part; when the push beam 531' moves downward, the first locking connecting beam 533a ' can be driven to move downward, then the transferring block 533c ' can be driven to rotate counterclockwise, and the transferring block 533c ' drives the second locking connecting beam 533b ', the lock body 52' to move rightward, and the lock head 51' can rotate clockwise to lock the supporting part again.

It should be noted that the above description of the specific structure of the locking drive beam assembly 53' is only a preferred embodiment of the present invention, and is not intended to limit the scope of the locking mechanism provided by the present invention, and other forms of locking drive beam assembly 53' may be used, for example, the locking drive beam assembly 53' may be a beam member directly configured to be capable of linear displacement, under the condition that the function is satisfied.

Further, as shown in fig. 1, the end chassis 2 is further provided with a lateral stop mechanism. When the bracket 4 is reset from the position separated from the end chassis 2 to the position connected with the end chassis 2, the transverse stop mechanism can determine the reset position of the bracket 4 so as to ensure that the bracket 4 is accurately connected with the end chassis 2.

Two lateral stop mechanisms are shown, a first lateral stop mechanism is shown in fig. 34-39, and a second lateral stop mechanism is shown in fig. 41-46. Both are described one by one below.

First transverse stop mechanism

As shown in fig. 34 to 36, the lateral stopper mechanism includes:

a support 61, the support 61 is fixed to the end connection hook 221, specifically, the support 61 may be fixed by welding or the like, and a via hole 611 is formed in the support 61;

A stop beam 62;

The stop driving beam assembly 63 is in transmission connection with the stop beam 62; in the blocking state, the blocking beam 62 can protrude out of the through hole 611 to form a lateral blocking to the supporting portion 4, and in the unblocking state, the blocking driving beam assembly 63 can drive the blocking beam 62 to retract to release the blocking to the supporting portion 4.

With this structure, in the stopped state, the stop beam 62 may extend from the via hole 611 to form a lateral stop for the supporting portion 4, so as to ensure accurate resetting of the supporting portion 4; in the disengaged state, the stop driving beam assembly 63 can act on the stop beam 62 to retract the stop beam, so that the stop of the supporting portion 4 can be released, and the normal separation of the supporting portion 4 and the end chassis 2 is not affected.

Further, a stopper elastic member 64 may be further included, and the stopper elastic member 64 may act on the stopper beam 62, and the deformation amount of the stopper elastic member 64 may be increased during the releasing process to accumulate the elastic force. Thus, when the driving force acting on the stop driving beam assembly 63 is eliminated, the stop elastic member 64 can be released to drive the stop beam 62 to automatically return to the stop position, so that the automation degree of the equipment can be improved.

Referring to fig. 36, the stopper beam 62 may include a thick neck portion 621 and a thin neck portion 622, between which a stepped surface 623 may be formed, and the stopper elastic member 64 may be a spring, which may be externally fitted to the thin neck portion 622 and may be capable of acting with the stepped surface 623. At this time, the thin neck 622 may also function as a spring post to guide the expansion and contraction of the spring, so that the radial play of the spring in the expansion and contraction process can be avoided to a greater extent, and the method has a positive effect on improving the stability and reliability of transmission.

It should be noted that, instead of using a spring, the stopper elastic member 64 may be another elastic member such as an elastic ball, an elastic block, a tension string, or the like, as long as the use effect is satisfied.

The support 61 may further be provided with a limiting element 65, and two ends of the stop elastic element 64 may respectively act with the limiting element 65 and the step surface 623, in the scheme of the drawing, the stop beam 62 may have a thick neck 621 as a stop portion to increase the strength of the stop portion, and when the stop is released, the step surface 623 may generate a compression force on the stop elastic element 64 to increase the compression amount of the stop elastic element 64, where the stop elastic element 64 is in contact with the limiting element 65 and the step surface 623.

Moreover, the cross section of the thick neck 621 may be non-circular, and the via hole 611 may be matched with the thick neck 621, where the matching means that the shape and the size of the two are substantially consistent, so that when the thick neck 621 is inserted into the via hole 611, the two will not generate relative rotation, and the reliability of positioning of the stop can be improved. Further, the stop surface of the thick neck 621 contacting the support 4 may be a flat surface, so that the contact area between the support 4 and the stop surface may be larger, and the reliability of the stop may be improved to a greater extent.

In fact, during the disengagement process, the stop elastic member 64 may also generate a pulling force, and the neck 622 of the stop beam 62 may be used as a stop portion contacting the support portion 4, and in this case, both ends of the stop elastic member 64 need to be connected to the stop member 65 and the step surface 623, so that a pulling force can be generated during the disengagement process.

The structure of the stopper 65 is not limited herein, and in the specific implementation, a person skilled in the art may set the stopper according to actual needs, as long as the above-described effects can be achieved. For example, in the solution of fig. 36, the limiting member 65 may be a sleeve, and the sleeve may be a cylinder, a square cylinder or a special-shaped cylinder with other shapes, and the sleeve may protect the spring to avoid the intervention of rainwater, dust, etc. to affect the normal operation of the spring to a greater extent; in the embodiment of fig. 39, the limiting member 65 may be plate-shaped or block-shaped, and may be connected to the support 61 through the upper cover plate 615, and at this time, the spring is located in a relatively open space, so that an operator can directly observe the spring, thereby facilitating adjustment of the installation state of the spring.

In connection with fig. 37, in practice, the embodiment of the present invention is not limited to the structure of the support 61, and the structure is mainly used to adapt to the connection with the end connection hook 221, and in practice, a person skilled in the art may adjust the shape of the support 61 according to the end connection hook 221, where the support 61 needs to provide corresponding mounting points, where one mounting point is the aforementioned through hole 611, and another mounting point, i.e. a mounting hole 612, is shown, and the mounting hole 612 may be used to mount a brake pipe assembly (not shown) of a piggyback vehicle.

The stopper driving beam assembly 63 may include a first link 631 which is hingedly provided, one end of the first link 631 may be a driving end 6311 for receiving an external driving force, the other end may be a coupling end 6312, and the first hinge shaft 633 of the first link 631 may be fixedly provided, specifically, may be fixedly installed at the support 61 between the driving end 6311 and the coupling end 6312, and the coupling end 6312 may be drivingly connected with the stopper beam 62.

Here, the embodiment of the present invention is not limited to the source of the driving force applied to the stop driving beam assembly 63 during the gear release, and a manual driving scheme may be adopted, for example, a gear release member such as a gear release lever may be provided, and when the gear release is required, the gear release member may be manually operated by a worker to generate the driving force to the driving end 6311; or an automatic driving scheme can be adopted, at this time, the power sources can be motors, air cylinders, oil cylinders and the like, the power sources can be installed on a vehicle body or ground equipment, the power sources can be specifically selected according to actual conditions, and a transmission mechanism can be further arranged between the power sources and the driving end 6311 so as to transmit the driving force of the power sources.

In one solution, as shown in fig. 34 to 36, the stop driving beam assembly 63 may further include a second connecting beam 632, one end portion of the second connecting beam 632 may be connected to the stop beam 62 by a threaded connection or welding, etc., one of the other end portion and the connecting end portion 6312 may be provided with a second hinge shaft 634, the other one may be provided with a bar-shaped guide hole 631a-1, and the second hinge shaft 634 may be inserted into the bar-shaped guide hole 631 a-1.

So configured, the second hinge shaft 634 is engaged with the bar-shaped guide hole 631a-1 to convert the rotational movement of the connection end 6312 into the linear movement of the second link beam 632, thereby driving the stop beam 62 to extend or retract.

In the drawings, the above-described bar-shaped guide hole 631a-1 may be provided at the connection end 6312, and the second hinge shaft 634 may be fixed to the second coupling beam 632, so that the second coupling beam 632 may be relatively small in size and more compact in structure.

In particular practice, the spring may have a certain amount of pre-compression to ensure reliability when the stop beam 62 is in the stop position, and the adjustment of the amount of pre-compression may be determined by the connection position of the second connecting beam 632 to the stop beam 62.

Based on the scheme that the second connecting beam 632 and the stop beam 62 are fixed by adopting threaded connection, a first anti-loosening piece 624 can be further arranged, the first anti-loosening piece 624 can be connected with the stop beam 62 and can be abutted against the second connecting beam 632 so as to fix the second connecting beam 632 in a loosening prevention manner. The first locking member 624 may be a locking nut, or may be a locking stopper in the form of a cutting, a stopper, or the like.

Further, the hinge assembly may further include a connection plate 613 and a guard plate 614, one end of the connection plate 613 may be connected to the support 61, the other end may be connected to the guard plate 614, for protecting the stop driving beam assembly 63, the first hinge shaft 633 may be mounted on the connection plate 613, or may be mounted by welding, or may be mounted by means of a mounting plate 633a and bolts, so long as reliable fixing of the first hinge shaft 633 is ensured. In practice, the web 613 and the guard 614 may also be part of the support 61.

In another alternative, as shown in fig. 39 and 40, the connection end 6312 may be provided with a bar-shaped guide groove 631e, the stop beam 62 may be inserted into the bar-shaped guide groove 631e, and the connection end 6312 may abut against a locking member 631f provided on the stop beam 62, so as to define a connection position between the connection end 6321 and the stop beam 62.

By this arrangement, the rotation of the connection end 6312 can be converted into the linear movement of the stopper beam 62 by the engagement of the stopper beam 62 with the strip guide groove 631e, so that the stopper beam 62 is driven to perform the deblocking or the restoration of the stopper.

In detail, the connection end 6312 may be defined between the locking member 631f and the stopper 65, and the adjustment of the precompression amount of the stopper elastic member 64 may be determined by the mounting position of the locking member 631f on the stopper beam 62, and a spacer 631g may be further provided between the locking member 631f and the connection end 6312 to reduce wear at the connection therebetween.

The locking member 631f may be connected to the stopper beam 62 by a screw, welding, or the like, and may further include a second locking member, which may be a lock nut, a stop insert (not shown), a stopper, or the like, for limiting the mounting position of the locking member 631 f.

In comparison, the two schemes can convert the rotation motion of the first connecting beam 631 into the linear motion of the stop beam 62, so as to realize the switching of the stop beam 62 between the stop state and the release state, and in specific applications, the switching can be selected by those skilled in the art according to actual needs.

Taking the foregoing first embodiment as an example, the first link 631 may include a long plate 631a and a short plate 631b disposed at intervals, the first hinge shaft 633 may be connected to the long plate 631a and the short plate 631b, one end of the long plate 631a may form the connection end 6312, the foregoing bar-shaped guide hole 631a-1 may be disposed on the long plate 631a, and a roller 631c may be connected between the other end of the long plate 631a and the short plate 631b, and at this time, the long plate 631a, the short plate 631b, and the roller 631c may be combined together to form the driving end 6311.

When an external driving force acts on the roller 631c, the roller 631c can rotate, and friction between the driving end 6311 and an external driving device can be reduced, which has a positive effect on reducing abrasion of the driving end 6311.

Referring to fig. 38, a roller 631d may be further included, the roller 631d may include a rod portion 631d-1 and a head portion 631d-2, the head portion 631d-2 may have a radial dimension greater than the rod portion 631d-1, the long plate portion 631a and the short plate portion 631b may each be provided with a through hole 631b-1, the through hole 631b-1 of one of the two located at the inner side may be a stepped hole, at least a portion of the head portion 631d-2 may be hidden in a large diameter hole section of the stepped hole in an assembled state, and an end of the rod portion 631d-1 remote from the head portion 631d-2 may be cooperatively locked with the locking nut 631 d-3.

The "inner side" here means the side near the end connecting hook 221, and with this design, the length of the roller 631d protruding inside can be made shorter, and contact friction with the end connecting hook 221 when the driving end 6311 rotates can be avoided to a large extent.

In the above-mentioned embodiments, the restoring stop of the stop beam 62 mainly depends on the stop elastic member 64 directly acting on the stop beam 62, and in addition to this embodiment, the stop beam 62 may be driven to restore the stop state by the stop driving beam assembly 63, that is, both the releasing stop and the restoring stop of the stop beam 62 may be completed by the stop driving beam assembly 63, and this embodiment may be realized by providing the stop driving beam assembly 63 with an elastic member.

In addition, a core of the transverse stop mechanism provided by the invention is that the stop driving beam assembly 63 and the stop beam 62 are separated, in the stop state, only the stop beam 62 and the support 61 are stressed, and the stop driving beam assembly 63 for participating in driving is not stressed, which is a key point of higher reliability of the transverse stop mechanism provided by the invention.

Second transverse stop mechanism

As shown in fig. 42 and 44-46, the lateral stop mechanism 6' includes:

a stop beam 61' which is hinged, two ends of the stop beam 61' are a driving end 611' and a stop end 612', respectively, a hinge shaft 613' of the stop beam 61' is positioned between the driving end 611' and the stop end 612', and the hinge shaft 613' is fixed to the end connection hook 221;

a stopper beam 62' fixed to the end connection hook 221;

In the stop state, the stop beam 62' is abutted against the outer side of the stop beam 61' in the transverse direction, and the stop beam 61' can form a transverse stop for the supporting part 4; in the disengaged state, the drive end 611 'is forced to rotate to urge the stop end 612' to release the stop for the carrier 4.

With the structure, in the stop state, the limit beam 62 'can be abutted against the stop beam 61' in the transverse direction, so that the stop beam 61 'provides transverse supporting force, and then the stop beam 61' forms a transverse stop for the supporting part 4, thereby ensuring accurate resetting of the supporting part 4; in the unlocked state, the driving end 611' can bear force and drive the whole stop beam 61' to rotate, so that the stop end 612' can be driven to rotate to release the stop, and the normal separation of the supporting part 4 and the end chassis 2 is not affected.

More importantly, in the stopped state, only the stop end 612 'and the stop beam 62' are stressed when the supporting part 4 resets and impacts the stop beam 61', and the driving end 611' serving as the moving part of the transverse stop mechanism is not stressed, which has a key effect on ensuring the reliability of the transverse stop mechanism provided by the invention.

It should be noted that the embodiment of the present invention is not limited to the source of the driving force applied to the driving end 611 'during the gear releasing, and a manual driving scheme may be adopted, for example, a gear releasing component such as a gear releasing lever may be provided, and when the gear is required to be released, the gear releasing component may be manually operated by a worker to generate the driving force on the driving end 611'; or an automatic driving scheme can be adopted, at this time, the power sources can be motors, air cylinders, oil cylinders and the like, the power sources can be installed on a vehicle body or ground equipment, the power sources can be specifically selected according to actual conditions, and a transmission mechanism can be further arranged between the power sources and the driving end 611' so as to transmit the driving force of the power sources.

Further, a first limiting member 63' may be further included, the first limiting member 63' is fixed to the end connection hook 221, and in the disengaged state, the stop beam 61' may abut against the first limiting member 63' to avoid excessive rotation of the stop beam 61 '.

Here, the embodiment of the present invention is not limited to the shape of the first limiting member 63', and may be plate-shaped, block-shaped, columnar, or the like, and may be specifically determined according to actual situations; similarly, the number and the mounting positions of the first stoppers 63' are not limited in the embodiment of the present invention, as long as the above-described effects can be achieved. In an exemplary embodiment of the present invention, the first stopper 63 'may be formed by extending the end hook wall plate 221c of the end connection hook 221, so that the number of parts may be reduced without providing the first stopper 63' exclusively.

In the disengaged state, i.e. when the stop beam 61' abuts against the first stop 63', the center of gravity of the stop beam 61' may be offset in the longitudinal direction from the hinge shaft 613' and located on the side of the stop end 612 '. In this way, when the driving force acting on the driving end 611' is eliminated, the stop beam 61' can automatically return to the stop state under the action of the gravity of the stop beam 61' without providing other driving components, and the structure of the device can be simpler.

And/or, a stopper elastic member 65 'may be further included, the stopper elastic member 65' may act on the stopper beam 61', and during the releasing, the deformation amount of the stopper elastic member 65' may be increased to accumulate the elastic force. In this way, when the driving force acting on the driving end 611' is removed, the elastic force accumulated by the stop elastic member 65' can be released to drive the stop beam 61' to rotate back to the stop state alone or in combination with the aforementioned gravity.

The stop elastic member 65 'may be a torsion spring, which is mounted to the hinge shaft 613', and has two protruding ends, one protruding end of the torsion spring may be fixed (or abutted against a fixed member such as the end connection hook 221), the other protruding end may be abutted against the stop beam 61', and the torsion spring may collect a torsional deformation force when the stop beam 61' rotates to release the stop state, and may release the torsional deformation force when the driving force applied to the driving end 611 'is removed, so as to drive the stop beam 61' to automatically rotate.

The stop elastic member 65' may be a linear spring, such as a tension spring, a compression spring, etc., which generates an elastic force by axial displacement, and the solution shown in fig. 44 is taken as an example, where the linear spring may be a tension spring, and one end of the tension spring may be fixed, and the other end may be connected to the stop beam 61', so that the elastic force may be accumulated when the stop beam 61' rotates to release the stop.

In addition to the torsion spring and the linear spring, the stop elastic member 65' may also be an elastic member in the form of an elastic block, an elastic ball, a tension rope, or the like, so long as the above technical effects can be achieved.

Still further, a second stopper 64' may be further included, the second stopper 64' being fixed to the end connection hook 221, and in the stopped state, the stopper beam 61' may abut against the second stopper 64' to define a position of the stopper beam 61' in the stopped state. The second limiting members 64 'may be similar in construction, number and location to the first limiting members 63' and will not be described in detail herein.

Moreover, by the support of the second limiting member 64', the stop beam 61' and the stop beam 62' can be arranged in a clearance manner in the vertical direction, so that the stop beam 62' does not need to bear the gravity of the stop beam 61', and accordingly, the connection between the stop beam 62' and the end connection hook 221 does not generate shearing stress, and the connection reliability between the stop beam 62' and the end connection hook 221 can be high.

The following examples of the present invention will also describe the structure of the stopper beam 61 'with respect to the lateral stopper mechanism 6' of the bracket 4 according to the above embodiments.

In connection with fig. 42, in the stopped state, the driving end 611' may be an end gradually inclined toward the stopping end 612' from top to bottom, so that when the driving end 611' receives an upward driving force, the stopping beam 61' will naturally rotate toward the direction of releasing the stopped state, so as to ensure that the stopping beam 61' can be smoothly unlocked.

It will be appreciated that adjusting the shape of the driving end 611', in fact the driving force and the direction of action of the driving end 611', also allows to achieve, in practice, a rotational unlocking of the stop beam 61' by adjusting the direction of the driving force.

In addition, in the stopped state, the end of the stop beam 61 'away from the driving end 611' may be provided with a bent downward, i.e. the stop end 612 'may be provided, which may increase the strength of the stop end 612' and may avoid the vehicle body and the brake pipe protecting device (not shown).

Referring again to fig. 46, the hinge shaft 613' of the stop beam 61' may be a stepped shaft, and may specifically include a large diameter section 613a ' and a small diameter section 613b ', wherein the large diameter section 613a ' may be used to connect with the end connection hook 221, and the stop beam 61' may be mounted on the large diameter section 613a '; a third stop 613c 'may also be included, and the third stop 613c' may be embodied as a nut that may be mounted to the small diameter section 613b 'to cooperate with the end connection hook 221 to define the mounting position of the stop beam 61'. It should be understood that the third limiting member 613c 'mainly acts as a limiting member, and is not locked, so that the stop beam 61' can be smoothly rotated after the installation is completed.

A gasket 613d 'may be further disposed between the third limiting member 613c' and the stop beam 61', and the gasket 613d' may be made of rubber or metal, so that direct friction between the stop beam 61 'and the third limiting member 613c' may be avoided, and the abrasion may be reduced.

The end underframe of the piggyback vehicle provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims

1. An end underframe of a piggyback vehicle is characterized by comprising an end underframe body and an end connecting mechanism fixed at the rear end of the end underframe body;

the end connection mechanism includes:

The inner hook surface of the end connecting hook is provided with an end groove extending along the transverse direction, and the end groove is used for placing and upwards supporting a lower round shaft of a supporting part of the piggyback car;

An end longitudinal support located above the end connection hook; the end part longitudinal support comprises an end part longitudinal support main body and end part abrasion plates fixed at the front end and the rear end of the end part longitudinal support main body, the end part longitudinal support main body is used for hooking an upper hook with a hook opening of the supporting part downwards, the upper hook is arranged at the end part of the supporting part, in the state of hooking both the upper hook and the upper hook, the end part abrasion plates at the front end are abutted with the front side of an inner hook surface of the upper hook, and the end part abrasion plates at the rear end are abutted with the rear side of the inner hook surface of the upper hook;

The upper part of the end wearing plate at the front end is inclined backwards relative to the lower part, and the upper part of the end wearing plate at the rear end is inclined forwards relative to the lower part; and the inner surface of the end groove forms an end guide surface, and the end guide surface is matched with the lower round shaft to guide the end underframe to rotate around the transverse direction.

2. The end chassis of claim, wherein the end connection mechanism further comprises:

An end lateral limiter located above the end connecting hook and in front of the end longitudinal support; the end part transverse limiting piece comprises an end part transverse limiting groove, the end part transverse limiting groove is used for being inserted into the guide limiting piece of the supporting part, and in an inserting state of the end part transverse limiting groove and the guide limiting piece, the left groove wall and the right groove wall of the end part transverse limiting groove are respectively positioned on the left side and the right side of the guide limiting piece so as to limit the transverse position of the guide limiting piece.

3. The end chassis of, wherein the left side groove wall upper portion and the right side groove wall upper portion of the end lateral limit groove respectively form a left guide surface and a right guide surface for guiding the guide limit piece into the end lateral limit groove, an upper side of the left guide surface is inclined left with respect to a lower side, and an upper side of the right guide surface is inclined right with respect to the lower side.

4. The end chassis of claim, wherein the end chassis body comprises: the device comprises a first cross beam, a second cross beam, a first longitudinal beam, a second longitudinal beam, a third longitudinal beam, a fourth longitudinal beam, a first sleeper beam, a second sleeper beam, an end traction beam, an impact seat, two end side bearings, a saddle mounting seat and a buffer mounting seat;

The first cross beam is arranged in front of the second cross beam, the first longitudinal beam and the second longitudinal beam are respectively fixed at the rear sides of the two ends of the first cross beam, the third longitudinal beam and the fourth longitudinal beam are respectively fixed at the front sides of the two ends of the second cross beam, the rear end of the first longitudinal beam and the front end of the third longitudinal beam are respectively fixed with the right end of the first sleeper beam, and the rear end of the second longitudinal beam and the front end of the fourth longitudinal beam are respectively fixed with the left end of the second sleeper beam, so that a frame is formed; the impact seat is fixed on the front side of the first cross beam;

the end traction beam is positioned in the frame, the front end of the end traction beam is fixed with the first cross beam, the rear end of the end traction beam is fixed with the second cross beam, and the saddle mounting seat and the buffer mounting seat are fixed in the end traction beam;

The left end of the first sleeper beam and the right end of the second sleeper beam are respectively fixed with the left side and the right side of the end traction beam; one of the end side bearings is fixed to the first bolster and the other end side bearing is fixed to the second bolster.

5. The end chassis of claim, wherein the end chassis body further comprises two container locks, one container lock being secured to the third side rail, the first bolster and the second cross rail on top, and the other container lock being secured to the fourth side rail, the second bolster and the second cross rail on top.

6. The end chassis of claim, wherein the end chassis body further comprises two sets of stiffening plates, one set of stiffening plates being secured between the third longitudinal beam and the second cross beam, the other set of stiffening plates being secured between the fourth longitudinal beam and the second cross beam.

7. The end chassis of any of claims, further comprising a locking mechanism; the end connecting hook comprises an end hook body comprising two end hook sections arranged at intervals in the transverse direction and an end receiving cavity formed between the two end hook sections for mounting the locking mechanism.

8. The end chassis of claim, wherein the end attachment hook further comprises an end hook wall panel wrapped around the outer hook surface of the end hook body, the end hook wall panel having an end first attachment hole, the end first attachment hole in communication with the end receiving cavity such that the unlocking member can extend into the end receiving cavity through the end first attachment hole to unlock the locking mechanism.

9. The end chassis of claim, wherein the locking mechanism comprises:

The lock body is hinged with the end connecting hook, one end of the lock body is a locking end, the other end of the lock body is a first limiting end, and the hinge shaft of the lock body is positioned between the locking end and the first limiting end;

the first limiting part is fixed in the end accommodating cavity;

the locking driving beam assembly is connected with the lock body;

In a locking state, the first limiting end part is propped against the first limiting part from top to bottom, and the locking end part is propped against the supporting part to lock the supporting part; under the unlocking state, the locking driving beam assembly can drive the first limiting end part to be separated from the first limiting part from bottom to top, and the locking end part is rotated to be separated from the supporting part.

10. The end chassis of claim, wherein the locking drive beam assembly comprises a push beam, a guide sleeve and a drive beam, the guide sleeve is fixed in the end receiving cavity, the push beam is slidably connected to the guide sleeve, one end of the drive beam is hinged to the lock body, and the other end of the drive beam is hinged to the push beam.

11. The end chassis of claim, wherein the locking mechanism further comprises a second stop portion fixed within the end receiving cavity, the lock further comprising a second stop end that, in a locked state, abuts the second stop portion from bottom to top.

12. The end chassis of claim, wherein the locking mechanism comprises:

The lock head is rotatably connected with the end connecting hook, and the lock head is respectively provided with a locking part and a supporting part at two sides of the rotation center line of the lock head;

A lock body slidably coupled to the end connection hook;

the locking driving beam assembly is in transmission connection with the lock body and is connected with the lock body;

in a locking state, the lock body is supported by the supporting part from bottom to top so that the locking part presses the supporting part; in an unlocking state, the locking driving beam assembly can drive the lock body to displace along a direction away from the lock head, and the supporting part can rotate downwards around the rotation center line, so that the locking part rotates upwards to be separated from the supporting part.

13. The end chassis of claim, wherein the locking drive beam assembly comprises a push beam, a guide sleeve and a coupling beam unit, the guide sleeve is fixed in the end receiving cavity, the push beam is slidably connected with the guide sleeve, one end of the coupling beam unit is hinged with the push beam, and the other end is hinged with the lock body.

14. The end chassis of claim, wherein the locking mechanism further comprises a rotary support body fixed to the end connection hook, the rotary support body is provided with a rotary shaft portion having an arc cylindrical surface, the lock head is provided with an arc notch matched with the rotary shaft portion, and the lock head is inserted into the rotary shaft portion through the arc notch and can use a central axis of the rotary shaft portion as the rotation center line.

15. The end chassis of claim, wherein the locking mechanism further comprises a second stop portion secured within the end receiving cavity, the second stop portion being capable of abutting the support portion from top to bottom in a locked condition.

16. The end chassis of any of claims, further comprising a lateral stop mechanism comprising:

the support is fixed on the end connecting hook and is provided with a through hole;

A stop beam;

The stop driving beam assembly is in transmission connection with the stop beam;

In a stop state, the stop beam extends out of the through hole to form a transverse stop for the supporting part; in the disengaged state, the stop drive beam assembly can drive the stop Liang Suhui to release the stop on the bracket.

17. The end chassis of any of claims, further comprising a lateral stop mechanism comprising:

The two ends of the stop beam are a driving end and a stop end respectively, a hinge shaft of the stop beam is positioned between the driving end and the stop end, and the hinge shaft is fixed on the end connecting hook;

the limiting beam is fixed on the end connecting hook;

In a stop state, the limit beam is propped against the outer side of the stop beam in the transverse direction, and the stop beam can form a transverse stop for the supporting part; in the disengaged state, the drive end is forced to rotate to urge the stop end to release the stop for the mount.

18. The end chassis of claim, wherein the lateral stop mechanism further comprises a first stop and a second stop, the first stop and the second stop each being secured to the end attachment hook, the stop beam abutting the first stop in the disengaged state and the stop beam abutting the second stop in the stopped state.