CN216775430U - Traction connecting device and traction equipment - Google Patents

Abstract

The utility model discloses a traction connecting device and traction equipment, and relates to the technical field of traction; the traction connecting device comprises a traction mechanism and a connecting mechanism; the traction mechanism is used for being connected with the operation device; the connecting mechanism comprises a shell, a driving assembly and a connecting piece, wherein the driving assembly and the connecting piece are movably arranged on the shell, the driving assembly is provided with a first position and a second position which are matched with the connecting piece, when the driving assembly is located at the first position, the driving assembly drives the connecting piece to extend out of the shell to be connected with the power device, and when the driving assembly is located at the second position, the connecting piece can retract into the shell to be separated from the power device. The connecting piece of the traction connecting device can rapidly extend out of the shell to be matched with the power device under the driving of the driving piece when the driving piece is located at the first position, and can retract into the shell to be separated from the power device when the driving piece is located at the second position, so that the traction connecting device has the advantages of convenience in installation, disassembly and maintenance and high operation efficiency.

Description

Traction connecting device and traction equipment

Technical Field

The utility model relates to the technical field of traction, in particular to a traction connecting device and traction equipment.

Background

The working devices such as agricultural implements and the like are usually towed by a power device such as a tractor and the like through a towing connecting device, one end of the towing connecting device is connected with the power device to receive the power output of the power device, and the other end of the towing connecting device is connected with the working device and is used for towing the working device to move.

However, in the prior art, the traction connection device and the power device have the problems of complicated installation, disassembly and maintenance operations and low installation, disassembly and maintenance efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a traction connecting device which can be rapidly extended out of a shell to be matched with a power device under the driving of a driving piece when the driving piece is positioned at a first position and can also be retracted back to the shell to be separated from the power device when the driving piece is positioned at a second position, so that the traction connecting device has the advantages of convenience in installation, disassembly and maintenance and high working efficiency.

Another object of the present invention is to provide a towing apparatus comprising the above towing attachment. Therefore, the power device and the traction connecting device of the traction equipment also have the advantages of convenient installation, disassembly and maintenance and high working efficiency.

The embodiment of the utility model is realized by the following steps:

in a first aspect, the present invention provides a traction coupling for traction of a work implement driven by a power unit, the traction coupling comprising:

the traction mechanism is used for being connected with the operation device;

the connecting mechanism comprises a shell, a driving assembly and a connecting piece, wherein the driving assembly and the connecting piece are movably arranged on the shell, the driving assembly is provided with a first position and a second position matched with the connecting piece, when the driving assembly is located at the first position, the driving assembly drives the connecting piece to extend out of the shell to be connected with the power device, and when the driving assembly is located at the second position, the connecting piece can retract into the shell to be separated from the power device.

In an alternative embodiment, the coupling mechanism comprises two coupling members located on either side of the drive assembly, the two sides of the drive assembly respectively driving the two coupling members to extend from corresponding positions on the housing when the drive assembly is in the first position, and both coupling members being retractable into the housing when the drive assembly is in the second position.

In an alternative embodiment, two ends of the housing are respectively provided with an opening, and the two connecting pieces are respectively movably arranged at the openings and can respectively penetrate through the corresponding openings to extend out of the housing along the mutually-away direction or can respectively penetrate through the corresponding openings to retract into the housing along the mutually-approaching direction;

the driving assembly is arranged between two ends of the shell and comprises two driving pieces arranged at intervals and an operating piece connected between the two driving pieces, the two driving pieces are respectively matched with the two connecting pieces, the two driving pieces can move to a first position under the driving of the operating piece, the corresponding connecting pieces are respectively driven to extend out from the corresponding openings, and the corresponding connecting pieces can move to a second position under the driving of the operating piece, so that the corresponding connecting pieces retract from the corresponding openings.

In an alternative embodiment, each driving member comprises a first driving surface, a connecting transition surface and a second driving surface which are arranged in sequence along the direction of movement of the driving member relative to the housing, the first driving surface is arranged closer to the corresponding end of the housing than the second driving surface, and the connecting transition surface is connected between the first driving surface and the second driving surface;

when the first driving surface is matched with the corresponding connecting piece, the driving piece is located at the first position, and when the second driving surface is matched with the corresponding connecting piece, the driving piece is located at the second position.

In an optional embodiment, each driving member further comprises a first limiting surface, and the first limiting surface is used for abutting against the shell when the driving member is located at the first position so as to limit the driving member to move continuously;

and/or the presence of a gas in the gas,

each driving piece is further provided with a second limiting surface, and the second limiting surface is used for being abutted against the shell when the driving piece is located at the second position so as to limit the driving piece to move continuously.

In an alternative embodiment, the coupling mechanism further comprises a resilient return member coupled between the housing and the coupling member for driving the coupling member to retract into the housing when the drive assembly is in the second position.

In an alternative embodiment, the housing is connected to the traction mechanism by a first pin;

or,

the shell is connected with the traction mechanism through a first pin shaft, a compression spring is further arranged between the first pin shaft and the traction mechanism, and the compression spring is used for compressing the first pin shaft.

In an optional embodiment, the traction mechanism comprises a traction rod and a traction fixing seat, a first end of the traction rod is connected with the connecting mechanism, a plurality of mounting holes are formed in a second end of the traction rod at intervals along the direction far away from the connecting mechanism, the traction fixing seat is sleeved outside the traction rod and matched with any one of the mounting holes through a second pin shaft, and the traction fixing seat is used for being connected with the operation device.

In an optional embodiment, an external thread is formed on the outer side of the traction rod, the locking member is sleeved on the outer side of the traction rod, the locking member is provided with an internal thread and is in threaded fit with the external thread, and the locking member is matched with the traction fixing seat and used for locking the traction fixing seat relative to the traction rod.

In an optional embodiment, the traction connecting device further includes a supporting seat movably disposed on the traction mechanism, the supporting seat has a supporting position and a furled position, when the supporting seat is located at the supporting position, the supporting seat is unfolded relative to the traction mechanism for supporting the traction mechanism on the working surface, and when the supporting seat is located at the furled position, the supporting seat is folded relative to the traction mechanism.

In a second aspect, the present invention provides a towing apparatus comprising:

a power plant;

in the traction connection device according to any one of the preceding embodiments, the connection mechanism of the traction connection device is connected to a power device, and the power device is used for driving the traction connection device to drive the operation device to move.

The embodiment of the utility model has at least the following advantages or beneficial effects:

the embodiment of the utility model provides a traction connecting device, which is used for drawing a working device under the driving of a power device and comprises a traction mechanism and a connecting mechanism; the traction mechanism is used for being connected with the operation device; the connecting mechanism comprises a shell, a driving assembly and a connecting piece, wherein the driving assembly and the connecting piece are movably arranged on the shell, the driving assembly is provided with a first position and a second position matched with the connecting piece, when the driving assembly is located at the first position, the driving assembly drives the connecting piece to extend out of the shell to be connected with the power device, and when the driving assembly is located at the second position, the connecting piece can retract into the shell to be separated from the power device. The connecting piece of the traction connecting device can rapidly extend out of the shell to be matched with the power device under the driving of the driving piece when the driving piece is located at the first position, and can retract into the shell to be separated from the power device when the driving piece is located at the second position, so that the traction connecting device has the advantages of convenience in installation, disassembly and maintenance and high operation efficiency.

Embodiments of the present invention also provide a traction apparatus, which includes the traction connection device. Therefore, the power device and the traction connecting device of the traction equipment also have the advantages of convenient installation, disassembly and maintenance and high working efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a portion of a hitch coupler, according to an embodiment of the present invention;

FIG. 2 is a first cross-sectional view of a coupling mechanism of a hitch coupler, according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a coupling mechanism of a hitch coupler, according to an embodiment of the present invention;

FIG. 4 is a second cross-sectional view of a coupling mechanism of a hitch coupler, according to an embodiment of the present invention;

FIG. 5 is a partial schematic structural view of a coupling mechanism of a hitch coupling provided in accordance with an embodiment of the present invention;

FIG. 6 is a third cross-sectional schematic view of the hitch coupler provided in accordance with an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a traction mechanism of a traction coupling according to an embodiment of the present invention.

The figure is 100-traction link; 101-a traction mechanism; 103-a connection mechanism; 105-a housing; 107-mounting a housing; 109-a connecting shell; 111-a drive assembly; 113-a connector; 115-a jack; 117-opening; 119-a drive member; 121-an operating member; 123-a first drive face; 125-a second drive face; 126-inclined plane; 127-a first limiting surface; 128-a second limiting surface; 129-elastic return member; 131-a retainer ring; 132 — a first via; 133-a first pin; 135-a hold-down spring; 137-first O-pin; 138-a mating portion; 139-a mating cavity; 141-a drawbar; 143-traction fixing seat; 145-mounting holes; 147-a locking member; 149-a second pin; 151-limit spring; 153-second O-pin; 155-joint hanging plate; 157-a lead guide plate; 159-a support base; 161-third pin; 163-third O-pin; 165-connecting a pin shaft; 167-lubricating oil channel; 169-a first oil seal; 171-a second oil seal; 173-a first wear-resistant bushing; 175-a second wear-resistant bushing; 177-a locking plate; 179-fasteners; 181-notch; 183-convex part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the related art, a power device such as a tractor is generally used for towing a working device such as an agricultural implement through a towing connecting device, one end of the towing connecting device is connected with the power device and receives power output of the power device, and the other end of the towing connecting device is connected with the working device and is used for towing the working device to move. However, the existing traction connection device and the power device have the problems of complicated installation, disassembly and maintenance operations and low installation, disassembly and maintenance efficiency.

In view of this, the present embodiment provides a traction apparatus, which includes a traction connection device, which can be driven by the driving member to rapidly extend out of the housing to be engaged with the power device when the driving member is located at the first position, and can also be driven by the driving member to retract into the housing to be disengaged from the power device when the driving member is located at the second position, so that the traction apparatus has the advantages of convenient installation, disassembly and maintenance, and high operation efficiency. The structure and operation of the traction device will now be described in detail.

Fig. 1 is a partial schematic structural view of a traction connection device 100 according to this embodiment. The present embodiment provides a traction device that includes a power plant and the traction interface 100 of fig. 1. The power unit is specifically selected to be a tractor, but other vehicles having a motive power may be selected in other embodiments, the tractor having a swing arm connectable to the traction interface 100. A specific choice of working device is an agricultural implement, such as a spreader. One end of the traction link 100 can be connected to a rocker arm of the tractor and the other end can be directly connected to an agricultural implement) so that the tractor can pull the spreader through the traction link 100 to move, thereby improving the operating efficiency and quality.

Referring again to fig. 1, in the present embodiment, the towing attachment 100 includes a towing mechanism 101 and an attachment mechanism 103. Traction mechanism 101 is connected the setting with coupling mechanism 103, and traction mechanism 101 is used for pulling the agricultural implement, and coupling mechanism 103 is used for being connected with the power device transmission to when making the tractor move, can drive the agricultural implement motion through traction mechanism 101.

Fig. 2 is a first cross-sectional view of the connecting mechanism 103 of the towing connecting device provided in this embodiment; fig. 3 is a schematic structural diagram of the connecting mechanism 103 of the traction connecting device according to this embodiment. Referring to fig. 1 to fig. 3, in the present embodiment, the connection mechanism 103 specifically includes a housing 105, a driving element 111, and a connection element 113.

The housing 105 includes a mounting shell 107 and a connecting shell 109, and the mounting shell 107 has a substantially hollow rectangular parallelepiped structure for mounting the driving assembly 111 and the connecting member 113. The connecting shell 109 is substantially in a circular ring structure, and the connecting shell 109 is sleeved outside the mounting shell 107, is connected with the mounting shell 107, and is used for being connected with the traction mechanism 101 so as to drive the operation device to move under the driving of the power device. Of course, in other embodiments, the shapes of the mounting shell 107 and the connecting shell 109 may also be adjusted according to requirements, for example, the mounting shell 107 may be set to be cylindrical, the connecting shell 109 may be set to be square, and the like, which is not limited in this embodiment.

It should be noted that, in this embodiment, the connecting shell 109 is connected to the mounting shell 107 through the connecting pin 165, and the connecting shell 109 is sleeved outside the mounting shell 107. A locking plate 177 is fixed on the end face of the connecting shell 109 through fixing pieces 179 such as bolts, the connecting pin shaft 165 penetrates through the connecting shell 109 and the mounting shell 107, the connecting shell 109 has an end portion extending out of the connecting shell 109, a notch 181 is formed in the end portion, and the locking plate 177 can be inserted into the notch 181 to lock the connecting pin shaft 165. Meanwhile, a lubricating oil channel 167 is arranged in the connecting pin shaft 165, so that the mounting shell 107 can have a certain degree of freedom, and the problem of rusting or inflexibility can be reduced. In addition, a first oil seal 169 and a second oil seal 171 are respectively arranged at two ends of the mounting shell 107, which are matched with the connecting pin shaft 165, so as to avoid pollution caused by oil leakage, and a first wear-resistant bushing 173 can be arranged between the mounting shell 107 and the outer peripheral side of the connecting pin shaft 165, so as to ensure the service life of the mounting shell 107.

The driving assembly 111 is movably disposed on the mounting shell 107 of the housing 105, and the power for the driving assembly 111 to move relative to the mounting shell 107 may be a force applied manually by a user or a driving force applied by some structure (such as an air cylinder or an oil cylinder) with power. Meanwhile, the connecting member 113 is also movably disposed on the mounting housing 107, and the driving member 111 has a first position and a second position cooperating with the connecting member 113, when the driving member 111 is located at the first position, the driving member 111 drives the connecting member 113 to extend out of the mounting housing 107 to be connected with the power device, and when the driving member 111 is located at the second position, the connecting member 113 can retract into the mounting housing 107 to be separated from the power device.

That is, the connecting member 113 of the traction connecting device 100 can be rapidly extended out of the housing 105 to be engaged with the power device under the driving of the driving member 119 when the driving member 119 is located at the first position, and can be retracted into the housing 105 to be separated from the power device when the driving member 119 is located at the second position, so that the traction connecting device has the advantages of convenient installation, disassembly and maintenance, and high working efficiency.

It should be noted that, in the present embodiment, the connecting member 113 is specifically selected to be a pin or other shaft-like or rod-like structure. The end of the connecting member 113 is provided with an insertion hole 115, and the insertion hole 115 is arranged in a vertical direction, so that when the connecting member 113 extends out of the mounting shell 107, the rocker arm of the tractor can swing up and down in the vertical direction to be inserted into or separated from the insertion hole 115. That is, when the connecting member 113 is extended out of the mounting case 107, the swing arm may be moved down to be inserted into the insertion hole 115 to complete the mounting, and when the swing arm is separated from the insertion hole 115, the connecting member 113 may be retracted into the mounting case 107 to complete the separation, which effectively ensures the efficiency and quality of the mounting, dismounting and maintenance.

It should also be noted that since tractors typically include more than one swing arm, for example, a tractor may be configured to include two swing arms, the number of links 113 in this embodiment may be two, with two links 113 located on each side of drive assembly 111. When the driving assembly 111 is located at the first position, two sides of the driving assembly 111 respectively drive the two connecting pieces 113 to extend out of the corresponding positions of the housing 105, so that two rocker arms of the tractor can simultaneously swing up and down and are inserted into the insertion holes 115 of the two connecting pieces 113; likewise, when drive assembly 111 is in the second position, both rocker arms can also simultaneously swing up and down out of engagement with socket 115, allowing both links 113 to retract into housing 105. Through the setting of two connecting pieces 113, can improve the stability after tractor and coupling mechanism 103 are connected on the one hand, guarantee the reliability of connecting to guarantee that the tractor draws the stability and the reliability of agricultural implement motion as power device, on the other hand can also guarantee the equilibrium behind tractor and the coupling mechanism 103 cooperation, make coupling mechanism 103 be difficult for taking place the side to incline, can fully guarantee the efficiency and the quality of pulling the operation.

Fig. 4 is a second cross-sectional view of the connecting mechanism 103 of the towing connecting apparatus provided in this embodiment; fig. 5 is a partial structural schematic view of the connecting mechanism 103 of the traction connecting device provided in this embodiment;

fig. 6 is a third schematic cross-sectional view of the connecting mechanism 103 of the traction connecting device provided in this embodiment. Referring to fig. 4 to 6, two ends of the mounting shell 107 are respectively provided with an opening 117, and the two connecting members 113 are respectively movably disposed at the openings 117 and can respectively extend out of the mounting shell 107 through the corresponding openings 117 in a direction away from each other or can respectively retract into the mounting shell 107 through the corresponding openings 117 in a direction approaching each other. As shown in fig. 4 and 5, two connecting members 113 are movably disposed at the left and right ends of the housing 105, respectively, the connecting member 113 at the left end can move in the ab direction to extend out of the mounting shell 107 and can move in the ba direction to retract into the mounting shell 107, and the connecting member 113 at the right end can move in the ba direction to extend out of the mounting shell 107 and can move in the ab direction to retract into the mounting shell 107.

Meanwhile, the driving assembly 111 is disposed between two ends of the mounting housing 107, and includes two driving members 119 disposed at an interval and an operating member 121 connected between the two driving members 119, the two driving members 119 penetrate through the mounting housing 107, the operating member 121 is disposed in a rod-shaped structure and located outside the mounting housing 107, and a user can hold the connecting member 113 to drive the driving members 119 to move along a dc direction or a cd direction in fig. 4 and 5. And, the two driving members 119 are respectively engaged with the two connecting members 113, and when the two driving members 119 are driven by the operating member 121 to move along the dc direction, the two driving members 119 can both move to the first position shown in fig. 4, and at this time, the two driving members 119 can respectively drive the connecting member 113 at the left end to extend from the opening 117 at the left end along the ab direction, and the connecting member 113 at the right end to extend from the opening 117 at the right end along the ba direction, so as to respectively engage with the two swing arms of the tractor. Meanwhile, the two driving members 119 can be driven by the operating member 121 to move along the cd direction to the second position shown in fig. 5, the connecting member 113 at the left end can retract into the mounting shell 107 along the ba direction, and the connecting member 113 at the right end can retract into the mounting shell 107 along the ab direction, so that the complete separation from the rocker arm of the tractor can be realized.

Through setting up like this for two connecting pieces 113 of drive assembly 111 ability simultaneous drive stretch out, can guarantee drive efficiency and drive quality, make coupling mechanism 103 more convenient and reliable with the cooperation process of tractor rocking arm, also do benefit to coupling mechanism 103 and the high efficiency of tractor rocking arm separation process to go on simultaneously, can fully guarantee the efficiency of installation, dismantlement and maintenance operation.

In detail, referring to fig. 4 and 5 again, in the present embodiment, after the swing arm of the tractor is separated from the connecting member 113, the process of retracting the connecting member 113 into the housing 105 can be performed manually by the user, or can be performed by using an automatic returning mechanism, where the automatic returning mechanism used in the present embodiment is an elastic returning member 129, the elastic returning member 129 is a spring, and the elastic returning member 129 is connected between the mounting shell 107 and the connecting member 113, and is used for driving the connecting member 113 to retract into the housing 105 when the driving assembly 111 is located at the second position. As shown in fig. 4, when the user holds the operating element 121 to drive the driving element 119 to move in the dc direction to the first position, so that the driving element 119 can drive the connecting element 113 at the corresponding position to extend out of the opening 117 at the corresponding position, as shown in fig. 5, when the user holds the operating element 121 to drive the driving element 119 to move in the cd direction to the second position, the connecting element 113 at the left end can be reset in the ba direction by the elastic resetting element 129 to retract the mounting housing 107, and the connecting element 113 at the right end can be reset in the ab direction by the elastic resetting element 129 to retract the mounting housing 107.

Referring to fig. 4 to 6 again, in order to enable the connecting member 113 to extend out of the mounting shell 107 under the action of the driving member 119 and to be restored and retracted into the mounting shell 107 under the action of the elastic restoring member 129, in this embodiment, the driving member 119 may be configured to be stepped, and the upper end is thicker and the lower end is thinner, so that when the driving member 119 moves along the dc direction or the cd direction, the positions of the stepped driving member 119 with different thicknesses can respectively cooperate with the connecting member 113, so that the connecting member 113 can extend out of the mounting shell 107 and can also be retracted into the mounting shell 107.

In detail, each drive member 119 comprises, in the direction of movement of the drive member 119 relative to the housing 105, a first drive surface 123, a connecting transition surface and a second drive surface 125 arranged in succession. Wherein the first driving surface 123 is located at a position where the upper end of the driving element 119 has a relatively large thickness, the second driving surface 125 is located at a position where the lower end of the driving element 119 has a relatively small thickness, and a connecting transition surface connects between the first driving surface 123 and the second driving surface 125, such that the first driving surface 123 is located closer to the corresponding end of the housing 105 than the second driving surface 125. When the first driving surface 123 is engaged with the corresponding connecting element 113, the driving element 119 is in the first position and can drive the corresponding connecting element 113 to extend, and when the second driving surface 125 is engaged with the corresponding connecting element 113, the driving element 119 is in the second position and the connecting element 113 can be reset by the elastic reset element 129 in the corresponding position to retract the mounting shell 107.

By this arrangement, when the drive member 119 is moved in the dc direction, the second drive surface 125 engages the end surface of the connecting member 113 first, the connecting transition surface engages the end surface of the connecting member 113, and finally the first drive surface 123 engages the end surface of the connecting member 113, and the connecting member 113 can be driven to protrude from the opening 117 because the first drive surface 123 is a mating surface closer to the end. Similarly, when the driving element 119 moves in the reverse direction in the cd direction, the first driving surface 123 is engaged with the end surface of the connecting element 113 first, then the connecting transition surface is gradually engaged with the end surface of the connecting element 113, and finally the second driving surface 125 is engaged with the end surface of the connecting element 113, since the second engaging surface is farther away from the end surface, the connecting element 113 can be reset under the action of the corresponding elastic reset element 129 to retract into the mounting housing 107.

That is, in the present embodiment, by setting the driving member 119 to have a stepped structure with different thicknesses, the position with a larger thickness can drive the connecting member 113 to extend, and the position with a smaller thickness can cancel the driving force of the connecting member 113, so that the connecting member 113 can be reset under the action of the elastic resetting member 129 at the corresponding position. The arrangement is high in driving efficiency and stability, the installation, disassembly and maintenance operation can be further simplified, and the efficiency of the installation, disassembly and maintenance operation is further improved. Of course, in other embodiments, the driving element 119 may be always in driving connection with the connecting element 113, so that the driving element 119 can drive the connecting element 113 to extend and also drive the connecting element 113 to retract, for example, the driving element is configured as a linear driving structure such as an air cylinder or an oil cylinder, and the like, which can ensure convenience and reliability of the operation.

It should be noted that, in this embodiment, the distance between the second driving surface 125 and the corresponding end of the mounting shell 107 is just the length of the connecting member 113. By this arrangement, after the rocker arm of the tractor is separated from the connecting element 113, the connecting element 113 can be retracted into the mounting shell 107 just completely under the action of the elastic restoring element 129 and is matched with the second driving surface 125, so that the stability and the safety of the connecting element 113 separated from the rocker arm can be fully ensured.

As an alternative, referring to fig. 4 to 6 again, in the present embodiment, the connecting transition surface includes a first limiting surface 127 and an inclined surface 126, an extending direction of the first limiting surface 127 is consistent with a moving direction of the connecting member 113, one end of the first limiting surface 127 is vertically connected to the first driving surface 123, the other end is connected to the inclined surface 126, the extending direction of the inclined surface 126 is inclined with respect to both the moving direction of the connecting member 113 and the moving direction of the driving member 119, one end of the inclined surface 126 is connected to the first limiting surface 127, and the other end is connected to the second driving surface 125. When the driving element 119 moves in the dc direction to the first position shown in fig. 4, the inclined surface 126 is partially located inside the mounting housing 107 and partially outside the mounting housing 107, the second driving surface 125 is located outside the mounting housing 107, the first driving surface 123 is located inside the mounting housing 107 and abuts against the connecting element 113, and the first limiting surface 127 abuts against the inner surface of the mounting housing 107 to prevent the driving element 119 from moving further in the dc direction, so that the driving element 119 can be stabilized in the first position to ensure the stability and reliability of the coupling mechanism 103 after being engaged with a tractor.

That is, the first limiting surface 127 can effectively limit the movement of the driving member 119, and ensure the stability and reliability of the driving member 119. Meanwhile, in the present embodiment, the inclined surface 126 is provided not only to ensure that the first driving surface 123 and the second driving surface 125 have a distance difference from the end, but also to ensure the smoothness of the movement of the driving member 119 relative to the mounting shell 107 between the first position and the second position, thereby further ensuring the efficiency and quality of mounting, dismounting and maintenance.

Further alternatively, referring to fig. 4 to 6 again, in the present embodiment, a protruding portion 183 is further disposed at an end of each driving member 119, the protruding portion 183 has a second limiting surface 128 facing the mounting shell 107, and an extending direction of the second limiting surface 128 is consistent with a moving direction of the connecting member 113. When the driving element 119 moves to the second position shown in fig. 5 along the cd direction, the inclined surface 126 and the first driving surface 123 are completely located outside the mounting shell 107, the second driving surface 125 is located inside the mounting shell 107 and abuts against the connecting element 113 reset under the elastic action of the elastic resetting element 129, and the second limiting surface 128 abuts against the outer surface of the mounting shell 107 to prevent the driving element 119 from moving continuously along the cd direction, so that the driving element 119 can be stabilized at the second position to ensure the stability and reliability of the connecting mechanism 103.

That is, in the present embodiment, by the arrangement of the first limiting surface 127 and the second limiting surface 128, the movement path of the driving element 119 can be constrained, so that the driving element 119 can be stably located at the first position or the second position, and can be prevented from being separated from the mounting shell 107, thereby sufficiently ensuring the stability of the reliability of the matching or separation between the connecting element 113 and the rocker arm, and further ensuring the stability and reliability of the mounting, dismounting and maintenance operations of the connecting mechanism 103 and the power device.

It should be noted that, in this embodiment, the material of the connecting member 113 may be 42CrMo, and meanwhile, a retaining ring 131 is sleeved on the outer side of each connecting member 113, and the material of the retaining ring 131 may be 45# steel, and is in interference fit with the connecting member 113, so as to prevent the connecting member 113 from generating hard collision when being connected with the rocker arm jack 115 of the tractor, thereby reducing damage to the side surface of the tractor rocker arm and ensuring the service life of each mechanism.

Fig. 7 is a schematic structural diagram of a traction mechanism 101 of the traction connection device provided in this embodiment. Referring to fig. 1, fig. 2 and fig. 7, in order to reduce the rigid connection between the power device and the agricultural implement, in the embodiment, the connecting shell 109 of the connecting mechanism 103 is connected to the traction mechanism 101 through the first pin 133.

In detail, in the present embodiment, a first through hole 132 is formed through the connecting shell 109, and a second wear-resistant bushing 175 is disposed inside the first through hole 132. Correspondingly, the traction mechanism 101 includes a traction rod 141 and a traction fixing seat 143, a first end of the traction rod 141 is provided with a matching portion 138, the matching portion 138 has a matching cavity 139, and upper and lower walls of the matching portion 138 are provided with second through holes (not shown) communicated with the matching cavity 139. The end of the connecting shell 109 can extend into the matching cavity 139, so that the first through hole 132 is opposite to and communicated with the second through hole, and the first pin 133 passes through the first through hole 132 and the second through hole to connect the connecting shell 109 and the matching part 138. The second end of the traction rod 141 is connected with a traction fixing seat 143, and the traction fixing seat 143 is used for connecting an agricultural implement. The connecting mechanism 103 and the traction mechanism 101 are connected through the first pin shaft 133, so that the traction mechanism 101 and the connecting mechanism 103 can rotate left and right at a certain angle, and compared with rigid connection, the problem that the tail swing is too large when a longer agricultural implement turns can be effectively solved.

As an optional scheme, in this embodiment, a pressing spring 135 is disposed between the head of the first pin 133 and the upper wall of the matching portion 138, and the pressing spring 135 may press the first pin 133, so as to allow the first pin 133 to rotate to some extent when the torsion is too large, so as to prevent the connection shell 109 and the first pin 133 from rotating in a non-coordinated manner during turning, and reduce the occurrence of the situation that the first pin 133 is broken due to too large stress. Meanwhile, the tail of the first pin shaft 133 is provided with a first O-shaped pin 137 to ensure convenience of installation and disassembly operations.

In more detail, referring to fig. 7 again, in the present embodiment, a plurality of mounting holes 145 are disposed at intervals on an outer side of the circular tubular rod portion of the second end of the drawbar 141 along a direction away from the connection shell 109, the mounting holes 145 are circular through holes, and the drawbar fixing seat 143 is sleeved outside the drawbar 141 and is matched with any one of the plurality of mounting holes 145 through the second pin shaft 149. Through the arrangement, on one hand, the traction rod 141 and the traction fixing seat 143 can be connected through the second pin shaft 149, so that the stability and reliability of the traction fixing seat 143 can be ensured, and the normal operation of traction operation can be ensured; on the other hand, the position of the traction fixing seat 143, which is far away from the first pin shaft 133, is adjustable, and the traction fixing seat has scalability, so that the turning radius in the traction process can be increased, the power device is prevented from colliding with an agricultural implement during turning, and meanwhile, the working space can be increased by adjusting the position of the traction fixing seat 143 according to the actual working condition of the agricultural implement, and the working efficiency and the working quality are ensured.

It should be noted that, in this embodiment, the number of the mounting holes 145 is three, and in other embodiments, the number of the mounting holes 145 may be increased or decreased according to the operation requirement of the agricultural implement, so as to ensure the operation efficiency and quality of the agricultural implement, which is not limited in this embodiment.

It should be further noted that, in this embodiment, the second pin shaft 149 is disposed through the traction fixing seat 143 and the mounting hole 145, and a limiting spring 151 is disposed between a head of the second pin shaft 149 and the traction fixing seat 143, for limiting a position of the second pin shaft 149, so as to prevent the second pin shaft 149 from being detached from the traction fixing seat 143. The tail of the second pin shaft 149 is provided with a second O-shaped pin 153 to ensure convenience of installation and disassembly.

Further optionally, in this embodiment, an outer thread is formed on an outer side of the round tubular rod portion of the traction rod 141, the traction mechanism 101 further includes a locking member 147 sleeved on the outer side of the traction rod 141, the locking member 147 may be a nut structure, the locking member 147 is provided with an inner thread and is in threaded fit with the outer thread, and the locking member 147 is in threaded fit with a side of the traction fixing base 143 away from the connection mechanism 103, so as to lock the traction fixing base 143 with respect to the traction rod 141 and prevent the traction fixing base 143 from moving. Through setting up like this, when the atress appears too big dragging the process, second round pin axle 149's radial atress warp and reach the certain degree after, axial locking piece 147 also can the atress simultaneously to make second round pin axle 149 can not appear the fracture, and then can guarantee that the condition with the tractor separation can not appear in the twinkling of an eye in the agricultural implement, can reduce the harm to agricultural implement, fully guarantee to pull reliability, security and the stability of operation.

That is, in this embodiment, through the cooperation of the locking member 147 and the second pin shaft 149, a double protection can be provided for the stability of the traction operation, so as to sufficiently ensure the safety, stability and reliability of the traction fixing seat 143.

Referring to fig. 1 and 7 again, in the present embodiment, the towing connecting device 100 further includes a supporting seat 159 movably disposed below the towing fixing seat 143 of the towing mechanism 101, the supporting seat 159 has a supporting position and a retracted position, when the supporting seat 159 is located at the supporting position, the supporting seat 159 is unfolded relative to the towing mechanism 101, and one end of the supporting seat is perpendicular to the towing fixing seat 143, and the other end of the supporting seat is perpendicular to the working surface, so as to support the towing mechanism 101 on the working surface, and when the supporting seat 159 is located at the retracted position, the supporting seat 159 is folded relative to the towing mechanism 101 and is approximately parallel to the towing bar 141. Through such arrangement, when the tractor is installed in cooperation with an agricultural implement or detached, the whole traction connecting device 100 can be supported by the supporting seat 159 located at the supporting position, so that the stability and safety of the installation and detachment operation can be ensured, and when the tractor needs to perform traction operation after being matched with the agricultural implement, the supporting seat 159 can be driven to move to the folding position, so that the traction operation is not affected.

In detail, in this embodiment, at least one third pin 161 is disposed between the supporting seat 159 and the lower side of the pulling fixing seat 143, and the supporting seat 159 can rotate around the third pin 161 relative to the pulling fixing seat 143. Meanwhile, the third pin 161 is correspondingly provided with a third O-shaped pin 163, when the tractor needs to perform traction operation after being matched with an agricultural implement, the third O-shaped pin 163 can be pulled out, and the support seat 159 is driven to move to the folding position and then the third O-shaped pin 163 is inserted.

Referring to fig. 1 and 7 again, in this embodiment, a connector hanging plate 155 and a lead guiding plate 157 may be further disposed on the traction fixing seat 143 according to requirements, the connector hanging plate 155 may be fastened and connected with the traction fixing seat 143 by a bolt, and the lead guiding plate 157 may be welded and matched with two sides of the traction fixing seat 143. The joint hanging plate 155 is mainly used for connecting an oil pipe of a tractor when an agricultural implement is separated from the tractor and stops working, and temporarily fixing a joint separated by a wire harness. The lead guide plate 157 can be used as a guide fixing point for connecting the oil pipe of the tractor and the wiring harness, and the description of the embodiment is omitted.

The following describes in detail the installation process, working principle and advantageous effects of the traction apparatus provided by the embodiment of the present invention:

when the traction equipment is installed, the traction fixing seat 143 can be connected with the installation hole 145 at a proper position on the traction rod 141 through the second pin shaft 149, and the second O-shaped pin 153 is inserted; then, the driving support 159 is moved to a supporting position around the third pin 161 relative to the pulling fixing base 143 to be supported on the working surface, and the third O-shaped pin 163 is inserted; then, the end of the connecting shell 109 of the assembled connecting mechanism 103 extends into the matching cavity 139 of the traction rod 141, the two are connected through the first pin shaft 133, and are compressed through the compression spring 135 and then inserted into the first O-shaped pin 137, and meanwhile, the traction fixing seat 143 is connected with an agricultural implement; finally, the hand-held operating part 121 drives the driving part 119 to move to the first position so as to drive the connecting pieces 113 at the corresponding positions to extend out of the corresponding openings 117, and after the connecting pieces 113 all extend out of the openings 117, the rocker arm of the tractor swings up and down to be plugged into the jack 115 of the connecting piece 113. The flow of the disassembly and maintenance operation is opposite to that of the installation operation, and is not described herein again.

After the installation is finished, the third O-shaped pin 163 can be drawn out, the driving support 159 moves to the folded position around the third pin 161 relative to the traction fixing base 143, and then the third O-shaped pin 163 is inserted, and then the tractor is started to drive the agricultural implement to perform corresponding operations. After the operation is completed, the rocker arm of the tractor is separated from the connecting member 113, and at this time, the operating member 121 can be held by hand to drive the driving member 119 to move to the second position, so that the connecting member 113 is reset under the elastic action of the elastic resetting member 129 to retract into the mounting shell 107.

In the above process, the connecting member 113 of the towing connecting device 100 can be quickly engaged with the rocker arm of the tractor under the driving of the driving member 119, and can also be quickly restored into the mounting shell 107 under the action of the elastic restoring member 129 when being separated from the rocker arm of the tractor, so that the device has the advantages of convenience in mounting, dismounting and maintaining and high operation efficiency.

In summary, the embodiments of the present invention provide a traction connection device 100 and a traction apparatus, which are convenient to mount, dismount, and maintain, and have high operation efficiency.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A hitch coupler for towing an implement under drive from a power plant, the hitch coupler comprising:

the traction mechanism is used for being connected with the operation device;

coupling mechanism, including casing, drive assembly and connecting piece, drive assembly with the connecting piece all set up in with the casing, just drive assembly have with connecting piece complex primary importance and second place, work as drive assembly is located during the primary importance, the drive assembly drive the connecting piece stretches out the casing, with power device connects, works as drive assembly is located during the second place, the connecting piece can retract the casing, with the power device separation.

2. The hitch coupler of claim 1, wherein:

the connecting mechanism comprises two connecting pieces positioned on two sides of the driving assembly, when the driving assembly is positioned at the first position, the two sides of the driving assembly drive the two connecting pieces to extend out of the corresponding positions of the shell respectively, and when the driving assembly is positioned at the second position, the two connecting pieces can retract into the shell.

3. The hitch coupler of claim 2, wherein:

two ends of the shell are respectively provided with an opening, the two connecting pieces are respectively movably arranged at the openings and can respectively penetrate through the corresponding openings to extend out of the shell along the mutually-away direction or can respectively penetrate through the corresponding openings to retract into the shell along the mutually-approaching direction;

drive assembly set up in between the both ends of casing, and including two driving pieces that the interval set up, and connect in two operating parts between the driving piece, two the driving piece respectively with two the connecting piece cooperation, and can move extremely under the drive of operating part the primary importance drives respectively and corresponds the connecting piece is followed and is corresponded the opening stretches out, and can move to the second place under the drive of operating part, so that correspond the connecting piece is followed and is corresponded the opening withdrawal.

4. The hitch coupler of claim 3, wherein:

along the direction that the driving pieces move relative to the shell, each driving piece comprises a first driving surface, a connecting transition surface and a second driving surface which are sequentially arranged, the first driving surface is closer to the corresponding end part of the shell than the second driving surface, and the connecting transition surface is connected between the first driving surface and the second driving surface;

when the first driving surface is matched with the corresponding connecting piece, the driving piece is located at the first position, and when the second driving surface is matched with the corresponding connecting piece, the driving piece is located at the second position.

5. The hitch coupler of claim 3, wherein:

each driving piece further comprises a first limiting surface, and the first limiting surface is used for abutting against the shell when the driving piece is located at the first position so as to limit the driving piece to move continuously;

and/or the presence of a gas in the gas,

each driving piece is further provided with a second limiting surface, and the second limiting surface is used for being abutted against the shell when the driving piece is located at the second position so as to limit the driving piece to move continuously.

6. The hitch coupler of any one of claims 1-5, wherein:

the connecting mechanism further comprises an elastic resetting piece, and the elastic resetting piece is connected with the shell and between the shell and the connecting piece and used for driving the connecting piece to retract into the shell when the driving assembly is located at the second position.

7. The hitch coupler of any one of claims 1-5, wherein:

the shell is connected with the traction mechanism through a first pin shaft;

or,

the shell is connected with the traction mechanism through a first pin shaft, a compression spring is further arranged between the first pin shaft and the traction mechanism, and the compression spring is used for compressing the first pin shaft.

8. The hitch coupler of any one of claims 1-5, wherein:

the traction mechanism comprises a traction rod and a traction fixing seat, wherein the first end of the traction rod is connected with the connecting mechanism, a plurality of mounting holes are formed in the second end of the traction rod at intervals along the direction away from the connecting mechanism, the traction fixing seat is sleeved outside the traction rod and matched with any one of the mounting holes through a second pin shaft, and the traction fixing seat is connected with the operation device.

9. The hitch coupler of claim 8, wherein:

the external screw thread has been seted up in the traction lever outside, draw mechanism still locates including the cover the retaining member in the traction lever outside, the retaining member be provided with the internal thread, with external screw thread screw-thread fit, just the retaining member with draw the fixing base cooperation, be used for with it is relative to draw the fixing base the traction lever locking.

10. The hitch coupler of any one of claims 1-5, wherein:

the traction connecting device further comprises a supporting seat movably arranged on the traction mechanism, the supporting seat is provided with a supporting position and a furling position, when the supporting seat is located at the supporting position, the supporting seat is unfolded relative to the traction mechanism and used for supporting the traction mechanism on a working surface, and when the supporting seat is located at the furling position, the supporting seat is folded relative to the traction mechanism.

11. A traction apparatus, comprising:

a power plant;

the hitch coupler of any one of claims 1-10, wherein the coupler mechanism of the hitch coupler is coupled to a power unit for driving the hitch coupler to move the work implement.

Images