CN112878705B

CN112878705B - Telescopic platform of unloading

Info

Publication number: CN112878705B
Application number: CN202110084680.XA
Authority: CN
Inventors: 康望才
Original assignee: Hunan Hankun Industrial Co Ltd
Current assignee: Hunan Hankun Industrial Co Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2022-10-18
Anticipated expiration: 2041-01-22
Also published as: CN112878705A

Abstract

The invention discloses a telescopic unloading platform, which comprises a cross beam, a supporting mechanism, a bearing mechanism and a power driving mechanism, wherein the bearing mechanism comprises a floating plate, guide columns, springs and a sliding plate, a plurality of guide columns are arranged below the floating plate, a plurality of cylindrical holes which are the same in number as the guide columns and are opposite in position are arranged on the sliding plate, the plurality of guide columns are sleeved with the springs, the guide columns penetrate into the cylindrical holes, and the springs are positioned between the floating plate and the sliding plate; the two cross beams are arranged in parallel at intervals, the supporting mechanism is connected with the cross beams, and the power driving mechanism comprises a seat body, a fixed seat, a chain, a first rack, an input pinion, an acceleration component, a driving shaft, a driving gear, a reversing gear, a transition gear, an output gear, a transmission shaft, a second rack, an overrunning component, a movable driving piece and an input shaft. The automatic transfer device is ingenious in structural design, flexible and convenient to use, the bearing mechanism can automatically move relative to the cross beam, automatic transfer of objects is achieved, labor cost is saved, and transfer efficiency is high.

Description

Telescopic platform of unloading

Technical Field

The invention relates to the technical field of engineering equipment, in particular to a telescopic unloading platform.

Background

Often need shift the object to another position from a position in the building construction process on, this generally adopts the manual work to shift a large amount of objects one by one to another position by a position, and this not only artifical intensity of labour is big, and artifical transportation is inefficient, and the human cost is high moreover, and is very much to heavy object, still need many people to assist just can with the object transportation, and the human input cost is bigger.

Disclosure of Invention

The telescopic unloading platform is ingenious in structural design, flexible and convenient to use, the bearing mechanism can automatically move relative to the cross beam, automatic object transferring is achieved, labor cost is saved, and transferring efficiency is high.

In order to achieve the purpose, the invention provides a telescopic unloading platform which comprises a cross beam, a supporting mechanism, a bearing mechanism and a power driving mechanism, wherein the bearing mechanism comprises a floating plate, guide columns, springs and a sliding plate, a plurality of guide columns are arranged below the floating plate, a plurality of cylindrical holes which are the same in number as the guide columns and are opposite in position are arranged on the sliding plate, the springs are sleeved outside the guide columns, the guide columns penetrate into the cylindrical holes, and the springs are positioned between the floating plate and the sliding plate;

the two cross beams are arranged in parallel at intervals, the supporting mechanism is connected with the cross beams, and the power driving mechanism comprises a seat body, a fixed seat, a chain, a first rack, an input pinion, a speed increasing assembly, a driving shaft, a driving gear, a reversing gear, a transition gear, an output gear, a transmission shaft, a second rack, an overrunning assembly, a movable driving piece and an input shaft;

the two cross beams are respectively provided with the second racks, and two ends of the sliding plate are respectively movably matched with the two cross beams; the two output gears are connected through the transmission shaft; the base body is fixedly arranged below the sliding plate, the first rack is connected with one end of the chain, the first rack and the chain are movably arranged in the base body in a matched mode, the chain is in a bent state, and the other end of the chain penetrates through the window in the sliding plate and then is connected with the lower portion of the floating plate; the input pinion is rotatably mounted on the seat body through an input shaft and meshed with the first rack; the driving shaft is rotatably arranged on the seat body, the speed increasing assembly is arranged on the seat body and is connected with the input pinion and the driving shaft, and the driving gear is moved and rotatably arranged on the driving shaft through the overrunning assembly; the fixed seat is fixedly arranged above the sliding plate, the reversing gear and the transmission shaft are both rotatably arranged on the fixed seat, the transition gear is rotatably arranged on the transmission shaft, and the two output gears are respectively meshed with the two second racks; the transition gear is meshed with the reversing gear; the movable driving part is connected with the driving gear, and the movable driving part drives the driving gear to move on the driving shaft; when the driving gear is meshed with the transition gear, the driving gear and the reversing gear are in a disengaged state; when the driving gear is meshed with the reversing gear, the driving gear and the transition gear are in a disengaged state;

when the floating plate moves downwards and drives the other end of the chain to move downwards, the driving shaft rotates and drives the driving gear to rotate through the overrunning component; when the floating plate moves upwards and drives the other end of the chain to move upwards, the driving gear cannot rotate after the driving shaft rotates and passes through the overrunning assembly.

Furthermore, a moving groove is formed in the seat body, the moving groove comprises a linear groove matched with the first rack and an arc-shaped groove matched with the chain, and an arc-shaped guide plate extends outwards from the groove edge of the arc-shaped groove; the speed increasing assembly comprises an input large gear, a first accelerating small gear, an accelerating large gear, a second accelerating small gear and an intermediate shaft, the intermediate shaft is rotatably mounted on the base body, the input small gear, the input large gear, the first accelerating small gear, the accelerating large gear and the second accelerating small gear are positioned in the linear groove, the input large gear is rotatably mounted on the input shaft, the first accelerating small gear and the accelerating large gear are rotatably mounted on the intermediate shaft, and the second accelerating small gear is rotatably mounted on the driving shaft; the input gearwheel is meshed with the first acceleration pinion, and the acceleration gearwheel is meshed with the second acceleration pinion.

Further, the movable driving part comprises an electric push rod, the fixed end of the electric push rod is connected with the fixed seat in a rotating mode, the telescopic end of the electric push rod is connected with the driving gear, the electric push rod drives the driving gear to move on the driving shaft, and when the driving gear rotates, the electric push rod rotates relative to the fixed seat.

Furthermore, the movable driving part comprises a reversing seat, a reversing handle, a first connecting rod, a second connecting rod, a third connecting rod and an arch frame, an annular T-shaped head is arranged at the end part of the driving gear, the reversing seat is connected with the cross beam, the reversing handle is movably matched and installed with the reversing seat, the reversing handle is hinged with one end of the first connecting rod, one ends of the two second connecting rods are hinged with the cross beam, the two second connecting rods are arranged alternately, the other ends of the two second connecting rods are hinged with the two ends of the third connecting rod respectively, and the cross beam, the third connecting rod and the two second connecting rods form a parallelogram structure; the other end of the first connecting rod is hinged with the middle of one of the second connecting rods; the arch frame is connected with the middle of the third connecting rod, and the arch frame is sleeved on the rod part of the annular T-shaped head.

Furthermore, the supporting mechanism comprises a first supporting assembly and a second supporting assembly, the first supporting assembly and the second supporting assembly are arranged on the two crossbeams, the first supporting assembly comprises a fixed rod, a telescopic supporting rod, a limiting seat and a first connecting plate, a vertical protruding part is arranged at the end part of each crossbeam, the limiting seat is arranged on each crossbeam, one end of the fixed rod is hinged with one end of the first connecting plate, the other end of the first connecting plate is fixedly connected with the vertical protruding part, the fixed rod is positioned between the vertical protruding part and the limiting seat, and the other end of the fixed rod is in telescopic connection with the telescopic supporting rod; one end of the fixed rod is provided with a scrap edge, when the fixed rod is in a vertical state, the scrap edge is lapped on the vertical bulge, and the fixed rod is blocked and limited by the limiting seat;

the second support assembly comprises a second connecting plate and an inclined strut, one end of the second connecting plate is fixedly connected with the cross beam, the inclined strut comprises an inclined part and a horizontal part connected with the inclined part, and the other end of the second connecting plate is hinged with the connecting part of the inclined part and the horizontal part; the horizontal portion is attached to the cross beam.

Furthermore, an external thread section is arranged at one end of the telescopic supporting rod, and a threaded hole matched with the external thread section is formed in the other end of the fixed rod; or the telescopic supporting rod comprises a rod body and a linear moving driving part, and the other end of the fixing rod is connected with the rod body through the linear moving driving part.

Furthermore, a fence is arranged on the floating plate.

When an object is placed on the floating plate, the bearing mechanism automatically moves relative to the cross beam under the action of the power driving mechanism, so that the automatic transfer of the object is realized, the labor cost is saved, the transfer efficiency is high, and the energy is saved and the consumption is reduced. The bearing mechanism can automatically move in two directions relative to the cross beam, can realize two-way feeding and discharging, and has the advantages of ingenious structural design and flexible and convenient use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the right part of fig. 1 rotated by a certain angle.

Fig. 3 is a perspective view of the load bearing mechanism of the present invention.

Fig. 4 is a perspective view of fig. 1 with a portion of the support mechanism and support mechanism removed and rotated at an angle.

Fig. 5 is an enlarged partial perspective view of the first support assembly and reversing lever of fig. 4.

Fig. 6 is a perspective view of fig. 4 with the slide plate, a portion of the support mechanism, and a portion of the power drive mechanism removed.

Fig. 7 is a partially enlarged perspective view of fig. 6 rotated at a certain angle and corresponding to the transition gear, the reversing gear, and the driving gear.

Fig. 8 is a perspective view of a portion of the power drive mechanism of the present invention.

Fig. 9 is a perspective view of the seat body of the present invention after being cut.

FIG. 10 is a cut-away schematic view of the drive shaft, drive gear and override assembly of the present invention.

FIG. 11 is a first schematic structural diagram of the movable driving member according to the present invention.

Fig. 12 is a second schematic structural diagram of the movable driving member of the present invention.

Fig. 13 is a perspective view of the present invention in use.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in order to make those skilled in the art better understand the technical solution of the present invention, and the description in this section is only exemplary and illustrative, and should not be construed as limiting the scope of the present invention in any way. 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.

It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, as the term is used in the generic and descriptive sense, and not for purposes of limitation, unless otherwise specified or implied, and the specific reference to a device or element is intended to be a reference to a particular element, structure, or component. 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", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but 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.

As shown in fig. 1 to 13, the telescopic discharging platform provided in this embodiment includes a cross beam 1, a supporting mechanism, a bearing mechanism 2, and a power driving mechanism, where the bearing mechanism 2 includes a floating plate 20, guide posts 21, springs 22, and a sliding plate 23, a plurality of guide posts 21 are provided below the floating plate 20, a plurality of cylindrical holes, which are the same in number as the guide posts 21 and are opposite in position, are provided on the sliding plate 23, the springs 22 are respectively sleeved outside the plurality of guide posts 21, the guide posts 21 penetrate into the cylindrical holes, and the springs 22 are located between the floating plate 20 and the sliding plate 23.

The two beams 1 are arranged in parallel at intervals, the supporting mechanism is connected with the beams 1, and the power driving mechanism comprises a seat body 404, a fixed seat 418, a chain 409, a first rack 410, an input pinion 411, a speed increasing assembly, a driving shaft 408, a driving gear 407, a reversing gear 406, a transition gear 405, an output gear 402, a transmission shaft 403, a second rack 401, an overrunning assembly 421, a movable driving piece and an input shaft 416.

The second racks 401 are arranged on the two cross beams 1, and two ends of the sliding plate 23 are movably matched with the two cross beams 1; the two output gears 402 are connected through the transmission shaft 403; the base body 404 is fixedly installed below the sliding plate 23, the first rack 410 is connected with one end of the chain 409, the first rack 410 and the chain 409 are installed in the base body 404 in a movable fit, the chain 409 is in a bent state, and the other end of the chain 409 passes through the window 230 on the sliding plate 23 and then is connected with the lower part of the floating plate 20; the input pinion 411 is rotatably mounted on the base 404 through an input shaft 411, and the input pinion 411 is engaged with the first rack 410; the driving shaft 408 is rotatably mounted on the base 404, the speed increasing assembly is mounted on the base 404 and connected to the input pinion 411 and the driving shaft 408, and the driving gear 407 is moved by the overrunning assembly 421 and rotatably mounted on the driving shaft 408; the fixed seat 418 is fixedly installed above the sliding plate 23, the reversing gear 406 and the transmission shaft 403 are both rotatably installed on the fixed seat 418, the transition gear 405 is rotatably installed on the transmission shaft 403, and the two output gears 402 are respectively engaged with the two second racks 401; the transition gear 405 is meshed with the reversing gear 406; the movable driving member is connected with the driving gear 407, and the movable driving member drives the driving gear 407 to move on the driving shaft 408; when the driving gear 407 is meshed with the transition gear 405, the driving gear 407 is disengaged from the reversing gear 406; when the driving gear 407 is meshed with the reversing gear 406, the driving gear 407 is disengaged from the transition gear 405.

In this embodiment, the overrunning assembly 421 preferably employs an existing ball type overrunning clutch, but may also employ other existing overrunning clutches, where when the ball type overrunning clutch is employed, the ball type overrunning clutch includes a claw wheel (or an inner star wheel) and the driving shaft 408 integrated into a whole, an outer ring and the driving gear 407 integrated into a whole, and a roller is rotatably mounted on the driving shaft 408, so that the structure is compact and the power transmission is reliable. When the floating plate 20 of the present embodiment moves downward and drives the other end of the chain 409 to move downward, the driving shaft 408 rotates and drives the driving gear 407 to rotate through the overrunning component 421; when the floating plate 20 moves upward and drives the other end of the chain 409 to move upward, the driving gear 407 does not rotate after the driving shaft 408 rotates through the overrunning component 421, so that the unidirectional rotation of the driving gear 407 is realized under the action of the overrunning component 421.

When the embodiment is used, one ends of the two beams 1 are fixedly arranged on the corresponding fixed buildings 7 or the corresponding fixed equipment, wherein the other ends of the beams 1 extend out of the fixed buildings 7 or the corresponding fixed equipment, and the other ends of the beams 1 can be suspended and also can be carried on other fixed buildings 7 or the corresponding fixed equipment, which is determined according to the object transfer condition. The beam 1 is further strengthened and fixed with a fixed building 7 or a fixing device through a supporting mechanism, and the stability and the reliability of the installation of the two beams 1 are ensured.

In this embodiment, when the driving gear 407 is engaged with the transition gear 405, and the driving gear 407 is disengaged from the reversing gear 406, the object to be transferred is placed on the floating plate 20, wherein the loading mechanism 2 is located at the loading position, and is acted by the weight of the object, the spring 22 is compressed, the floating plate 20 moves downward relative to the sliding plate 23, and when the floating plate 20 moves downward, the other end of the chain 409 is driven to move downward, so that the chain 409 and the first rack 410 move relative to the base 404, the first rack 410 moves, the input pinion 411 is driven to rotate, the driving shaft 408 is driven to rotate after being accelerated by the speed increasing assembly, the driving shaft 408 rotates to drive the driving gear 407 to rotate via the overrunning assembly 421, so as to drive the transition gear 405 to rotate, the transition gear 405 rotates to drive the driving shaft 403 and the output gear 402 to rotate, and the sliding plate 23 moves relative to the cross beam 1 under the action of the second rack 401, so that when the object is placed on the floating plate 20, the loading mechanism 2 automatically moves relative to the cross beam 1, so that the loading mechanism 2 moves from the loading position to the unloading position, thereby achieving automatic transfer of the object, saving the labor cost, and saving energy consumption, and reducing energy consumption. The parameters such as the downward moving distance of the chain 409 and the length of the beam 1 are set according to the moving distance of the carrying mechanism 2 and the gravity of the object, and are not particularly limited. The heavier the object weight, of course, the faster the carrier 2 moves. This embodiment is of course preferred for the transfer of heavy objects. In the process, the transition gear 405 rotates to drive the reversing gear 406 to rotate.

When the object is transferred to the unloading position and the unloading is completed, at this time, under the action of the spring 22, the floating plate 20 is reset to the initial position, that is, the floating plate 20 moves upward relative to the sliding plate 23, so as to drive the other end of the chain 409 to move upward, so as to drive the first rack 410, the input pinion 411, the speed increasing assembly, and the driving shaft 408 to move, at this time, the rotation direction of the driving shaft 408 is opposite to the direction when the other end of the chain 409 moves downward, and under the action of the overrunning assembly 421, the driving shaft 408 cannot drive the driving gear 407 to rotate, and the driving gear 407 cannot rotate, so that the transition gear 405, the transmission shaft 403, and the output gear 402 cannot rotate, and the bearing mechanism 2 cannot move, so as to ensure that the bearing mechanism 2 is fixed at the corresponding position after the unloading.

When the carrying mechanism 2 needs to move from the unloading position to the loading position, the movable driving member drives the driving gear 407 to move relative to the driving shaft 408, so that the driving gear 407 moves to be engaged with the reversing gear 406, the driving gear 407 is disengaged from the transition gear 405, at this time, an object to be transported is placed on the floating plate 20, the spring 22 is compressed under the action of the weight of the object, the floating plate 20 moves downward relative to the sliding plate 23, when the floating plate 20 moves downward, the other end of the chain 409 is driven to move downward, so that the chain 409 and the first rack 410 move relative to the seat body 404, the first rack 410 moves, the driving input pinion 411 rotates, the driving shaft 408 rotates after being accelerated by the speed increasing assembly, the driving shaft 408 rotates to drive the driving gear 407 to rotate through the overrunning assembly 421, so that the reversing gear 406 rotates, the reversing gear 406 rotates to drive the transition gear 405, at this time, the rotation direction of the transition gear 406 is opposite to the rotation direction when the transition gear 405 is directly engaged with the driving gear 407, the transition gear 405 rotates to drive the transmission shaft 403 and the output gear 402 to rotate, at this time, under the action of the second rack 401, the sliding plate 23 moves relative to the unloading position, and the energy-saving beam 20 is placed on the carrying mechanism 2, and the unloading beam 20. And this embodiment has realized bearing mechanism 2 for the two-way automatically move of crossbeam 1, can realize two-way material loading and unload, structural design is ingenious, and it is nimble convenient to use.

In this embodiment, preferably, a moving groove 4040 is formed in the base 404, where the moving groove 4040 includes a linear groove matched with the first rack 410 and an arc-shaped groove matched with the chain 409, and an arc-shaped guide plate 4041 extends outward from a groove edge of the arc-shaped groove; the speed increasing assembly comprises an input gearwheel 412, a first acceleration pinion 413, an acceleration gearwheel 414, a second acceleration pinion 415 and an intermediate shaft 417, wherein the intermediate shaft 417 is rotatably mounted on the base 404, the input pinion 411, the input gearwheel 412, the first acceleration pinion 413, the acceleration gearwheel 414 and the second acceleration pinion 415 are positioned in the linear groove, the input gearwheel 412 is rotatably mounted on the input shaft 416, the first acceleration pinion 413 and the acceleration gearwheel 414 are rotatably mounted on the intermediate shaft 417, and the second acceleration pinion 415 is rotatably mounted on the driving shaft 408; the input gearwheel 412 meshes with the first acceleration pinion 413, and the acceleration gearwheel 414 meshes with the second acceleration pinion 415. The present embodiment performs the moving guide function of the chain 409 and the first rack 410 by the moving groove 4040 and the arc-shaped guide plate 4041. When the first rack 410 moves, the driving shaft 408 is driven to rotate through the input pinion 411, the input gearwheel 412, the first acceleration pinion 413, the intermediate shaft 417, the acceleration gearwheel 414 and the second acceleration pinion 415, so as to increase the moving speed and the moving distance of the bearing mechanism 2.

The structure of the movable driving member of the present embodiment is preferably as follows:

the first method comprises the following steps: as shown in fig. 11, the moving driving member includes a permanent magnet 423, an electromagnet 422, and a return spring 424, the return spring 424 and the permanent magnet 423 are connected to the driving gear 407, and the permanent magnet 423 is located in the return spring 424; the electromagnet 422 is connected with the fixed seat 418, and the electromagnet 422 is opposite to the permanent magnet 423. The present embodiment of course further includes a power supply device for supplying power to the electromagnet 422, which is a conventional technology and therefore will not be described in detail.

When the driving gear 407 is meshed with the transition gear 405 and the driving gear 407 is disengaged from the reversing gear 406, the electromagnet 422 is in a power-off state, and the return spring 424 is in a natural state. When the driving gear 407 needs to be moved to be meshed with the reversing gear 406 and the driving gear 407 is disengaged from the transition gear 405, the electromagnet 422 is electrified, the electromagnet 422 is attracted to the permanent magnet 423, the driving gear 407 moves towards the fixed seat 418, the driving gear 407 moves relative to the driving shaft 408, the driving gear 407 is meshed with the reversing gear 406, and the return spring 424 is in a compressed state. When the electromagnet 422 loses power, the electromagnet 422 and the permanent magnet 423 are not attracted, and at the moment, under the action of the elastic force of the return spring 424, the return spring 424 drives the driving gear 407 to move and return, so that the driving gear 407 is meshed with the transition gear 405.

And the second method comprises the following steps: as shown in fig. 12, the movable driving member includes an electric push rod 425, a fixed end of the electric push rod 425 is rotatably connected to the fixed seat 418, a telescopic end 426 of the electric push rod 425 is connected to the driving gear 407, the electric push rod 425 drives the driving gear 407 to move on the driving shaft 408, and when the driving gear 407 rotates, the electric push rod 425 rotates relative to the fixed seat 418. The electric push rod 425 stretches to drive the driving gear 407 to move on the driving shaft 408, so that the structure is simple; when the driving gear 407 rotates, the electric push rod 425 rotates relative to the fixed seat 418, so the electric push rod 425 does not obstruct the rotation of the driving gear 407. Preferably, the fixed end of the power plunger 425 is rotatably connected to the fixed base 418 via a bearing to reduce the resistance to rotation of the power plunger 425. Preferably, the telescopic end 426 of the electric push rod 425 is of a telescopic structure, and the electric push rod 425 is provided with a through hole through which the driving shaft 408 passes, the rotating center line of the electric push rod 425 is the same as the rotating center line of the driving shaft 408, the telescopic end 426 of the telescopic structure is sleeved on the driving shaft 408, and the driving shaft 408 passes through the through hole, so that two ends of the driving shaft 408 are conveniently connected with the seat body 404 and the driving gear 407 without interfering with the rotation of the driving shaft 408.

And the third is that: as shown in fig. 1-7, the movable driving member includes a reversing base 502, a reversing handle 501, a first connecting rod 503, a second connecting rod 504, a third connecting rod 505, and an arch 506, an end of the driving gear 407 is provided with an annular T-shaped head 420, the reversing base 502 is connected to the beam 1, the reversing handle 501 is movably mounted on the reversing base 502, the reversing handle 501 is hinged to one end of the first connecting rod 503, one ends of the two second connecting rods 504 are both hinged to the beam 1, the two second connecting rods 504 are arranged alternately, the other ends of the two second connecting rods 504 are respectively hinged to two ends of the third connecting rod 505, and the beam 1, the third connecting rod 505, and the two second connecting rods 504 form a parallelogram structure; the other end of the first connecting rod 503 is hinged with the middle of one of the second connecting rods 504; the arch 506 is connected with the middle of the third link 505, and the arch 506 is sleeved on the rod part of the annular T-shaped head 420. Wherein, a moving chute 5020 matched with the reversing handle 501 is arranged on the reversing seat 502. Under the action of the annular T-shaped head 420, the arch 506 is retained on the driving gear 407 and the annular T-shaped head 420. In operation, a person manually pushes the reversing handle 501 to move in the reversing seat 502, so as to pull the first link 503, and the first link 503 pulls the hinge point of the second link 504 and the third link 505 relative to the cross beam 1 to rotate, so as to drive the arch 506 to move, so as to drive the driving gear 407 to move relative to the driving shaft 408.

In this embodiment, preferably, the supporting mechanism 2 includes a first supporting component and a second supporting component, the first supporting component and the second supporting component are disposed on both the two beams 1, the first supporting component includes a fixing rod 301, a telescopic supporting rod 302, a limiting seat 303 and a first connecting plate 305, a vertical protrusion 101 is disposed at an end of each beam 1, the limiting seat 303 is mounted on the beam 1, one end of the fixing rod 301 is hinged to one end of the first connecting plate 305, the other end of the first connecting plate 305 is fixedly connected to the vertical protrusion 101, the fixing rod 301 is located between the vertical protrusion 101 and the limiting seat 303, and the other end of the fixing rod 301 is telescopically connected to the telescopic supporting rod 302; one end of the fixing rod 301 is provided with a lapping edge 304, when the fixing rod 301 is in a vertical state, the lapping edge 304 is lapped on the vertical bulge part 101, and the fixing rod 301 is blocked and limited by the limiting seat 303;

the second support assembly comprises a second connecting plate 310 and a diagonal brace 311, wherein one end of the second connecting plate 310 is fixedly connected with the cross beam 1, the diagonal brace 311 comprises an inclined part 3111 and a horizontal part 3110 connected with the inclined part 3111, and the other end of the second connecting plate 310 is hinged to the connection part of the inclined part 3111 and the horizontal part 3110; the horizontal portion 3110 is attached to the cross member 1.

As shown in fig. 13, in this embodiment, under the effect of the first supporting component, the telescopic supporting rod 302 is supported on the fixed building 7 or the fixing device in a propping manner, so as to play a role in strengthening the supporting, wherein the spacing seat 303 is fixed on the fixed building 7 or the fixing device through a plurality of expansion bolts 306, so that the spacing seat 303 can be detachably clamped on the beam 1, thereby realizing that the spacing seat 303 can be detachably connected with the beam 1, so that when the discharging platform is not used in this embodiment, the spacing seat 303 is detached from the beam 1, the fixing rod 301 and the telescopic supporting rod 302 are folded relative to the beam 1, so as to facilitate transportation and storage of the discharging platform.

In this embodiment, the end of the inclined portion 3111 is clamped to the side of the fixed structure 7 or the fixture by the second support member supported by the side of the fixed structure 7 or the fixture, but a clamping seat engaged with the inclined portion 3111 may be provided to the fixed structure 7 or the fixture to secure the clamping stability. When the discharging platform of the present embodiment is not in use, the inclined portion 3111 is folded with respect to the cross beam 1 to facilitate transportation and storage of the discharging platform.

In this embodiment, preferably, one end of the telescopic supporting rod 302 is provided with an external thread section, and the other end of the fixing rod 301 is provided with a threaded hole matched with the external thread section; or the telescopic supporting rod 302 comprises a rod body and a linear moving driving part, and the other end of the fixing rod 301 is connected with the rod body through the linear moving driving part. In this embodiment, the telescopic supporting rod 302 is connected with the fixing rod 301 by a screw thread, or the rod body is driven to move by the linear moving driving element, so as to adjust the length of the telescopic supporting rod 302 and the fixing rod 301, thereby adjusting the pushing force. The linear moving driving part adopts linear moving equipment such as an electric cylinder, an electric push rod, an oil cylinder or an air cylinder and the like.

In the present embodiment, the floating plate 20 is preferably provided with a fence 6. The limiting protection effect of the object on the floating plate 20 is realized through the fence 6, and when the bearing mechanism 2 is prevented from moving, the object is prevented from moving out of the floating plate 20 relative to the floating plate 20 due to large displacement, and the safety is improved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A telescopic unloading platform is characterized by comprising a cross beam, a supporting mechanism, a bearing mechanism and a power driving mechanism, wherein the bearing mechanism comprises a floating plate, a plurality of guide columns, a spring and a sliding plate, the lower part of the floating plate is provided with the plurality of guide columns, the sliding plate is provided with a plurality of cylindrical holes which are the same in number as the guide columns and are opposite in position, the spring is sleeved outside each of the plurality of guide columns, the guide columns penetrate into the cylindrical holes, and the spring is positioned between the floating plate and the sliding plate;

the two cross beams are respectively provided with the second racks, and two ends of the sliding plate are respectively movably matched with the two cross beams; the two output gears are connected through the transmission shaft; the base body is fixedly arranged below the sliding plate, the first rack is connected with one end of the chain, the first rack and the chain are movably arranged in the base body in a matched mode, the chain is in a bent state, and the other end of the chain penetrates through the window in the sliding plate and then is connected with the lower portion of the floating plate; the input pinion is rotatably arranged on the base body through an input shaft and is meshed with the first rack; the driving shaft is rotatably arranged on the seat body, the speed increasing assembly is arranged on the seat body and is connected with the input pinion and the driving shaft, and the driving gear is moved and rotatably arranged on the driving shaft through the overrunning assembly; the fixed seat is fixedly arranged above the sliding plate, the reversing gear and the transmission shaft are both rotatably arranged on the fixed seat, the transition gear is rotatably arranged on the transmission shaft, and the two output gears are respectively meshed with the two second racks; the transition gear is meshed with the reversing gear; the movable driving part is connected with the driving gear, and the movable driving part drives the driving gear to move on the driving shaft; when the driving gear is meshed with the transition gear, the driving gear and the reversing gear are in a disengaged state; when the driving gear is meshed with the reversing gear, the driving gear and the transition gear are in a disengaged state;

when the floating plate moves downwards and drives the other end of the chain to move downwards, the driving shaft rotates and drives the driving gear to rotate through the overrunning component; when the floating plate moves upwards and drives the other end of the chain to move upwards, the driving gear cannot rotate after the driving shaft rotates and passes through the overrunning assembly;

the base body is provided with a moving groove, wherein the moving groove comprises a linear groove matched with the first rack and an arc-shaped groove matched with the chain, and the groove edge of the arc-shaped groove extends outwards to form an arc-shaped guide plate; the speed increasing assembly comprises an input large gear, a first accelerating small gear, an accelerating large gear, a second accelerating small gear and an intermediate shaft, the intermediate shaft is rotatably mounted on the base body, the input small gear, the input large gear, the first accelerating small gear, the accelerating large gear and the second accelerating small gear are positioned in the linear groove, the input large gear is rotatably mounted on the input shaft, the first accelerating small gear and the accelerating large gear are rotatably mounted on the intermediate shaft, and the second accelerating small gear is rotatably mounted on the driving shaft; the input gearwheel is meshed with the first acceleration pinion, and the acceleration gearwheel is meshed with the second acceleration pinion.

2. The telescopic discharging platform according to claim 1, wherein the movable driving member comprises an electric push rod, a fixed end of the electric push rod is rotatably connected with the fixed seat, a telescopic end of the electric push rod is connected with the driving gear, the electric push rod drives the driving gear to move on the driving shaft, and when the driving gear rotates, the electric push rod rotates relative to the fixed seat.

3. The telescopic discharging platform according to claim 1, wherein the movable driving member comprises a reversing seat, a reversing handle, a first connecting rod, a second connecting rod, a third connecting rod and an arch frame, an annular T-shaped head is arranged at the end of the driving gear, the reversing seat is connected with the cross beam, the reversing handle is movably installed with the reversing seat in a matched manner, the reversing handle is hinged with one end of the first connecting rod, one ends of the two second connecting rods are hinged with the cross beam, the two second connecting rods are arranged alternately, the other ends of the two second connecting rods are respectively hinged with two ends of the third connecting rod, and the cross beam, the third connecting rod and the two second connecting rods form a parallelogram structure; the other end of the first connecting rod is hinged with the middle of one of the second connecting rods; the arch frame is connected with the middle of the third connecting rod, and the arch frame is sleeved on the rod part of the annular T-shaped head.

4. The telescopic discharging platform as claimed in claim 1, wherein the supporting mechanism comprises a first supporting component and a second supporting component, the first supporting component and the second supporting component are arranged on both the two cross beams, the first supporting component comprises a fixed rod, a telescopic supporting rod, a limiting seat and a first connecting plate, a vertical bulge is arranged at the end of each cross beam, the limiting seat is mounted on the cross beam, one end of the fixed rod is hinged with one end of the first connecting plate, the other end of the first connecting plate is fixedly connected with the vertical bulge, the fixed rod is positioned between the vertical bulge and the limiting seat, and the other end of the fixed rod is telescopically connected with the telescopic supporting rod; one end of the fixed rod is provided with a scrap edge, when the fixed rod is in a vertical state, the scrap edge is lapped on the vertical bulge, and the fixed rod is blocked and limited by the limiting seat;

the second supporting assembly comprises a second connecting plate and a diagonal supporting rod, one end of the second connecting plate is fixedly connected with the crossbeam, the diagonal supporting rod comprises an inclined part and a horizontal part connected with the inclined part, and the other end of the second connecting plate is hinged with the connecting part of the inclined part and the horizontal part; the horizontal portion is attached to the cross beam.

5. The telescopic discharging platform as claimed in claim 4, wherein one end of the telescopic supporting rod is provided with an external thread section, and the other end of the fixed rod is provided with a threaded hole matched with the external thread section; or the telescopic supporting rod comprises a rod body and a linear moving driving part, and the other end of the fixing rod is connected with the rod body through the linear moving driving part.

6. A telescopic discharge platform according to any one of claims 1 to 5, wherein said floating plate is provided with a fence.