CN112499144B - Unloading structure for AGV commodity circulation dolly - Google Patents

Abstract

The invention discloses a blanking structure for an AGV logistics trolley, which comprises a trolley body, wherein the upper end of the trolley body is fixedly connected with a support, one side of the upper end of the support is fixedly connected with a vertical plate, one side of the support, which is far away from the vertical plate, is fixedly connected with two support posts, a plurality of railing are fixedly connected between the two support posts and the vertical plate, one side of the vertical plate, which is far away from the support posts, is fixedly connected with a motor through a mounting seat, the output end of the motor is fixedly connected with a rotating rod, the bottom end of the rotating rod is connected with a pushing mechanism through a first bevel gear, the first bevel gear is fixedly sleeved at the bottom end of the rotating rod, one side of the vertical plate, which is far away from the motor, is provided with a buffer mechanism, and the bottom end of the buffer mechanism is connected with the pushing mechanism, and the beneficial effects achieved by the invention are that: guide the goods through the stock guide, prevent that the goods from striking with ground fast, guarantee the goods safety, utilize the stopper simultaneously can be fine prevent that the goods from sliding and lead to dropping on the support, guarantee the goods safety to can not hinder the discharge in-process, use more convenient.

Description

Unloading structure for AGV commodity circulation dolly

Technical Field

The invention relates to a blanking structure for an AGV logistics trolley, and belongs to the technical field of AGV logistics trolleys.

Background

AGV logistics trolley is a transport vehicle equipped with an electromagnetic or optical automatic navigation device, capable of traveling along a prescribed navigation path, and having safety protection and various transfer functions. In industrial application, a carrier for a driver is not needed, and a rechargeable storage battery is used as a power source. Generally, the traveling path and behavior of the vehicle can be controlled by a computer, or the traveling path can be established by using an electromagnetic track, the electromagnetic track is adhered to the floor, and the vehicle is moved and operated by the information brought by the electromagnetic track.

The current AGV commodity circulation dolly is when transporting the destination with the goods, can not very convenient automatic discharge, and little part AGV commodity circulation dolly that has discharge mechanism is when unloading, because do not have fine buffer, thereby the goods can strike subaerial between the car, and easy goods causes the damage, simultaneously, the dolly is in the in-process of traveling, to some lighter goods appear slipping easily to can lead to the goods to drop from the car, still need the manual work to go to handle, more troublesome.

Disclosure of Invention

The invention aims to solve the defects that in the prior art, when an AGV logistics trolley transports goods to a destination, unloading cannot be conveniently and automatically carried out, and when the AGV logistics trolley with a small part of unloading mechanisms is unloaded, the goods can strike the ground between the vehicles due to the fact that a good buffer device is not provided, so that the goods are easy to damage, meanwhile, the trolley easily slides on some lighter goods in the driving process, so that the goods can fall from the vehicle, manual handling is needed, and the handling is troublesome.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a AGV commodity circulation is unloading structure for dolly, includes the automobile body, automobile body upper end fixedly connected with support, support upper end one side fixedly connected with riser, support is kept away from two pillars of one side fixedly connected with of riser, two equal fixedly connected with a plurality of railing between pillar and the riser, one side that the pillar was kept away from to the riser is through mount pad fixedly connected with motor, motor output fixedly connected with bull stick, the bull stick bottom is connected with pushing mechanism through first bevel gear, first bevel gear is fixed cup joints in the bull stick bottom, one side that the motor was kept away from to the riser is equipped with buffer gear, buffer gear bottom is connected with pushing mechanism, two be equipped with the recess between the pillar, be equipped with stop gear in the recess, stop gear one side is equipped with the stock guide, the stock guide is kept away from the one end rotation of motor with the support and is connected, the stock guide is connected through supporting mechanism with automobile body one side.

Preferably, the pushing mechanism comprises a first bottom groove, two second bottom grooves, a connecting groove, a screw rod, two guide rods, a second bevel gear and three mounting blocks, wherein the first bottom groove is arranged at the upper end of the support, the second bottom grooves are respectively arranged at the two sides of the first bottom groove, the connecting groove is arranged on the support right below the mounting seat, the screw rod is rotationally connected with the first bottom groove, one end of the screw rod stretches into the connecting groove, the screw rod is rotationally connected with the connecting groove, the second bevel gear is fixedly sleeved at the position of the screw rod, which is positioned in the connecting groove, the two guide rods are meshed with the first bevel gear, the two guide rods are fixedly connected in the second bottom groove, the three mounting blocks are respectively positioned in the first bottom groove and the two second bottom grooves, and the mounting blocks positioned in the first bottom groove are in threaded connection with the screw rod and are correspondingly movably sleeved at the two guide rods.

Preferably, the buffer gear includes push plate, holding tank, buffer plate, blotter, two side slots, four branches and four sliders, push plate fixed connection is in three installation piece upper ends, one side that the riser was kept away from to the push plate is equipped with the holding tank, buffer plate one side cover is established in the holding tank, fixedly connected with blotter between buffer plate and the holding tank lateral wall, all be equipped with the side slot on holding tank roof and the diapire, two equal fixedly connected with two branches in the side slot, two sliders of equal fixedly connected with of buffer plate upper end and lower extreme, four the slider is cup jointed with four branch activities respectively.

Preferably, the stop gear includes backup pad, second mounting groove, two second horizontal poles, second sliding plate, second spring, first fixed block, stopper, second fixed block and second connecting plate, fixedly connected with backup pad in the recess, backup pad upper end one side is equipped with the second mounting groove, fixedly connected with two second horizontal poles in the second mounting groove, the second sliding plate activity cup joints on two second horizontal poles, fixedly connected with two second springs between second sliding plate and the second mounting groove lateral wall, two the second spring overlaps respectively to establish at two second horizontal pole periphery, backup pad upper end opposite side fixedly connected with first fixed block, first fixed block upper end rotation is connected with the stopper, one side fixedly connected with second fixed block that the stopper is close to the second mounting groove, be connected through the second connecting plate between second fixed block and the second sliding plate.

Preferably, the supporting mechanism comprises a first mounting groove, two first cross bars, a first sliding plate, two first springs, a fixed plate and a first connecting plate, wherein the first mounting groove is formed in the bottom end of the stock guide plate, two first cross bars are fixedly connected in the first mounting groove, the first sliding plate is movably sleeved on the two first cross bars, two first springs are fixedly connected between the first sliding plate and the side wall of the first mounting groove, the two first springs are respectively sleeved on the periphery of the two first cross bars, the fixed plate is fixedly connected to one side of a vehicle body, and the fixed plate is connected with the first sliding plate through the first connecting plate.

Preferably, the upper end of the limiting block extends out of the groove, the limiting block is arranged in an inclined state, the upper end of the second connecting plate is rotationally connected with the second fixing block, and the bottom end of the second connecting plate is rotationally connected with the second sliding plate.

Preferably, the upper end of the first connecting plate is rotationally connected with the first sliding plate, and the bottom end of the first connecting plate is rotationally connected with the fixed plate.

Preferably, one side of the guide plate far away from the support is provided with an arc surface.

The invention provides a blanking structure for an AGV logistics trolley, which has the beneficial effects that:

1. when placing goods on the support, the stopper can be spacing to the goods, when needing to discharge, the motor drives the second bevel gear through first bevel gear and rotates, the second bevel gear drives the screw rod and rotates, the screw rod drives the flitch through three installation piece and removes, the flitch passes through the buffer board and promotes the goods, the buffer board receives the extrusion when contacting with the goods, the buffer board is to holding tank internal contraction, and can extrude the blotter, utilize the effect of blotter to make the buffer board have certain cushioning, guarantee the goods safety, the goods passes through the promotion of buffer board and stopper contact, owing to the stopper sets up to incline the state, the goods can be very convenient extrudees the stopper, use the stopper upset shrink gradually in the recess, the stopper can promote the second sliding plate through the second connecting plate and remove, extrude two second springs through the second sliding plate, make two second springs be in compression state, after the discharge is accomplished, the effect through two second springs can stretch out the recess again, load initial state, be convenient for follow-up task, prevent that the goods from sliding on the support and leading to dropping through the stopper, guarantee that the goods is safe, and can not more convenient in the use discharge.

2. When goods can be moved to the stock guide in the unloading process, the stock guide receives the extrusion and can incline to ground gradually, and the stock guide promotes first sliding plate through first connecting plate at the slope in-process and removes, makes first spring be in compression state, and effort that utilizes first spring can prevent stock guide tilting speed too fast to prevent that the goods can be quick take place the striking with ground, guarantee goods safety, after the unloading is accomplished, the stock guide returns to initial position through the effort of first spring, so that the next time uses.

Drawings

FIG. 1 is a schematic structural view of a blanking structure for an AGV logistics trolley;

fig. 2 is an enlarged schematic diagram of a structure at a position a of a blanking structure for an AGV logistics trolley according to the present invention;

FIG. 3 is a schematic diagram of a buffering mechanism of a blanking structure for an AGV logistics trolley;

fig. 4 is an enlarged schematic diagram of a B-site structure of a blanking structure for an AGV logistics trolley according to the present invention;

fig. 5 is a schematic top view of a blanking structure for an AGV logistics trolley according to the present invention;

FIG. 6 is an enlarged schematic view of the structure at C of FIG. 5;

fig. 7 is a schematic diagram of a material guiding plate of a blanking structure for an AGV logistics trolley.

In the figure: 1. a vehicle body; 2. a support; 3. a mounting base; 4. a motor; 5. a buffer mechanism; 51. a pushing plate; 52. a buffer plate; 53. a slide block; 54. a support rod; 55. a side groove; 56. a cushion pad; 57. a receiving groove; 6. a pushing mechanism; 61. a mounting block; 62. a second bottom groove; 63. a guide rod; 64. a connecting groove; 65. a screw; 66. a second bevel gear; 67. a first bottom groove; 7. a support mechanism; 71. a fixing plate; 72. a first connection plate; 73. a first mounting groove; 74. a first cross bar; 75. a first sliding plate; 76. a first spring; 8. a limiting mechanism; 81. a limiting block; 82. a second connecting plate; 83. a second fixed block; 84. a second sliding plate; 85. a second spring; 86. a second mounting groove; 87. a second cross bar; 88. a support plate; 89. a first fixed block; 9. a riser; 10. a support post; 11. a material guide plate; 12. a cambered surface; 13. a groove; 14. a rotating rod; 15. a first bevel gear; 16. railing.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Referring to fig. 1-7, a unloading structure for AGV commodity circulation dolly, which comprises a carriage body 1, automobile body 1 upper end fixedly connected with support 2, support 2 upper end one side fixedly connected with riser 9, one side fixedly connected with two pillars 10 of riser 9 is kept away from to support 2, all fixedly connected with a plurality of railing 16 between two pillars 10 and the riser 9, one side that the riser 9 kept away from pillar 10 is through mount pad 3 fixedly connected with motor 4, motor 4 output fixedly connected with bull stick 14, bull stick 14 bottom is connected with pushing mechanism 6 through first bevel gear 15, first bevel gear 15 is fixed cup joint in bull stick 14 bottom, one side that the riser 9 kept away from motor 4 is equipped with buffer gear 5, buffer gear 5 bottom is connected with pushing mechanism 6, be equipped with recess 13 between two pillars 10, be equipped with stop gear 8 in the recess 13, stop gear 8 one side is equipped with stock guide 11, stock guide 11 is kept away from the one end rotation connection of motor 4 with support 2, stock guide 11 is connected through supporting mechanism 7 with automobile body 1 one side, carry out the direction to the goods through stock guide 11, prevent goods quick and ground, guarantee that the goods from falling safely, simultaneously, guarantee that the goods can prevent well from falling in 2 can not prevent to fall in the course very much that the safety from bringing about the safety to the unloading.

The pushing mechanism 6 comprises a first bottom groove 67, two second bottom grooves 62, a connecting groove 64, a screw rod 65, two guide rods 63, a second bevel gear 66 and three mounting blocks 61, wherein the upper end of the support 2 is provided with the first bottom groove 67, the two sides of the first bottom groove 67 are respectively provided with the second bottom groove 62, the support 2 right below the mounting seat 3 is provided with the connecting groove 64, the screw rod 65 is rotationally connected in the first bottom groove 67, one end of the screw rod 65 extends into the connecting groove 64, the screw rod 65 is rotationally connected with the connecting groove 64, the part of the screw rod 65 positioned in the connecting groove 64 is fixedly sleeved with the second bevel gear 66, the second bevel gear 66 is meshed with the first bevel gear 15, the guide rods 63 are fixedly connected in the two second bottom grooves 62, the three mounting blocks 61 are respectively positioned in the first bottom groove 67 and the two second bottom grooves 62, the mounting blocks 61 positioned in the first bottom groove 67 are in threaded connection with the screw rod 65, the installation blocks 61 positioned in the two second bottom grooves 62 are movably sleeved with the corresponding guide rods 63, the motor 4 drives the second bevel gear 66 to rotate through the first bevel gear 15, the second bevel gear 66 drives the screw rod 65 to rotate, the screw rod 65 drives the pushing plate 51 to move through the three installation blocks 61, the pushing plate 51 pushes goods through the buffer plate 52 to carry out unloading operation, the buffer mechanism 5 comprises the pushing plate 51, the containing groove 57, the buffer plate 52, the buffer cushion 56, the two side grooves 55, the four support rods 54 and the four sliding blocks 53, the pushing plate 51 is fixedly connected to the upper ends of the three installation blocks 61, the containing groove 57 is arranged on one side of the pushing plate 51 far away from the vertical plate 9, one side of the buffer plate 52 is sleeved in the containing groove 57, the buffer plate 52 is fixedly connected with the buffer cushion 56 between the side walls of the containing groove 57, the side grooves 55 are respectively arranged on the top wall and the bottom wall of the containing groove 57, the two support rods 54 are fixedly connected in the two side grooves 55, the upper end and the lower end of the buffer plate 52 are fixedly connected with two sliding blocks 53, the four sliding blocks 53 are respectively and movably sleeved with four supporting rods 54, when the buffer plate 52 is contacted with goods, the buffer plate 52 is extruded to the accommodating groove 57 to shrink inwards, the buffer cushion 56 is extruded, the buffer plate 52 has certain buffering property by utilizing the action of the buffer cushion 56, the goods safety is ensured, the limiting mechanism 8 comprises a supporting plate 88, a second mounting groove 86, two second cross bars 87, a second sliding plate 84, a second spring 85, a first fixing block 89, a limiting block 81, a second fixing block 83 and a second connecting plate 82, a supporting plate 88 is fixedly connected in the groove 13, one side of the upper end of the supporting plate 88 is provided with a second mounting groove 86, two second cross bars 87 are fixedly connected in the second mounting groove 86, the second sliding plate 84 is movably sleeved on the two second cross bars 87, two second springs 85 are fixedly connected between the second sliding plate 84 and the side wall of the second mounting groove 86, the two second springs 85 are respectively sleeved on the peripheries of the two second cross bars 87, the other side of the upper end of the supporting plate 88 is fixedly connected with a first fixed block 89, the upper end of the first fixed block 89 is rotationally connected with a limiting block 81, one side of the limiting block 81, which is close to the second mounting groove 86, is fixedly connected with a second fixed block 83, the second fixed block 83 is connected with a second sliding plate 84 through a second connecting plate 82, goods are contacted with the limiting block 81 through pushing of the buffer plate 52, as the limiting block 81 is set to be in an inclined state, the goods can conveniently extrude the limiting block 81, so that the limiting block 81 gradually overturns and contracts into the groove 13, the limiting block 81 pushes the second sliding plate 84 to move through the second connecting plate 82 in the overturning process, the two second springs 85 are extruded through the second sliding plate 84, so that the two second springs 85 are in a compressed state, when unloading is completed, the limiting block 81 extends out of the groove 13 through the action of the two second springs 85 and returns to an initial state, so that a subsequent loading task is facilitated, the falling of the goods caused by sliding of the goods on the support 2 can be well prevented through the limiting block 81, the safety of the goods is ensured, the use is more convenient in the unloading process, the supporting mechanism 7 comprises a first mounting groove 73, two first cross bars 74, a first sliding plate 75, two first springs 76, a fixing plate 71 and a first connecting plate 72, the bottom end of the material guiding plate 11 is provided with the first mounting groove 73, the two first cross bars 74 are fixedly connected in the first mounting groove 73, the first sliding plate 75 is movably sleeved on the two first cross bars 74, the two first springs 76 are fixedly connected between the side walls of the first sliding plate 75 and the first mounting groove 73, the two first springs 76 are respectively sleeved on the peripheries of the two first cross bars 74, the fixed plate 71 is fixedly connected to one side of the vehicle body 1, the fixed plate 71 is connected with the first sliding plate 75 through the first connecting plate 72, when goods can move to the guide plate 11 in the unloading process, the guide plate 11 is extruded to incline to the ground gradually, the guide plate 11 pushes the first sliding plate 75 to move through the first connecting plate 72 in the inclining process, the first spring 76 is in a compressed state, the inclined speed of the guide plate 11 can be prevented from being too fast by utilizing the acting force of the first spring 76, the goods can be prevented from being impacted with the ground quickly, the safety of the goods is ensured, after the unloading is finished, the guide plate 11 returns to the initial position through the acting force of the first spring 76, so that the upper end of the limiting block 81 extends out of the groove 13 for the next use, the upper end of the limiting block 81 is arranged in an inclined state, the upper end of the second connecting plate 82 is rotationally connected with the second fixed block 83, the second connecting plate 82 bottom rotates with the second sliding plate 84 to be connected, carry out spacingly through stopper 81, in the discharge process, stopper 81 promotes the second sliding plate 84 through the second connecting plate 82 and removes, make stopper 81 shrink gradually to recess 13 in, be convenient for the goods pass through, first connecting plate 72 upper end rotates with first sliding plate 75 to be connected, first connecting plate 72 bottom rotates with fixed plate 71 to be connected, first connecting plate 72 supports stock guide 11 through the effort of two first springs 76, stock guide 11 tilting speed is too fast is prevented, the goods safety when guaranteeing to unload, one side that stock guide 11 kept away from support 2 is equipped with cambered surface 12, make the goods more steady landing.

Working principle: when in use, when goods are placed on the support 2, the limiting block 81 can limit the goods, when the goods are required to be unloaded, the motor 4 drives the second bevel gear 66 to rotate through the first bevel gear 15, the second bevel gear 66 drives the screw rod 65 to rotate, the screw rod 65 drives the pushing plate 51 to move through the three mounting blocks 61, the pushing plate 51 pushes the goods through the buffer plate 52, the buffer plate 52 is extruded to shrink inwards towards the accommodating groove 57 when in contact with the goods, the buffer plate 56 is extruded, the buffer plate 52 has certain buffering property by utilizing the action of the buffer plate 56, the goods are ensured to be safe, the goods are pushed by the buffer plate 52 to contact with the limiting block 81, because the limiting block 81 is arranged in an inclined state, the goods can conveniently extrude the limiting block 81, the limiting block 81 can gradually overturn and shrink into the groove 13, the limiting block 81 pushes the second sliding plate 84 to move through the second connecting plate 82 in the overturning process, the second sliding plate 84 extrudes the two second springs 85 to enable the two second springs 85 to be in a compressed state, after unloading is completed, the limiting block 81 stretches out of the groove 13 under the action of the two second springs 85 to return to an initial state, so that subsequent loading tasks are facilitated, when goods move onto the material guide plate 11 when passing through the limiting block 81, the material guide plate 11 is gradually inclined towards the ground due to extrusion, the material guide plate 11 pushes the first sliding plate 75 to move through the first connecting plate 72 in the inclination process, the first springs 76 are in a compressed state, the inclined speed of the material guide plate 11 can be prevented from being too high by the acting force of the first springs 76, so that the goods can be prevented from being impacted with the ground quickly, the safety of the goods is ensured, after unloading is completed, the material guide plate 11 returns to an initial position through the acting force of the first springs 76, so that the next time of use, guide the goods through stock guide 11, prevent that the goods from striking with ground fast, guarantee the goods safety, utilize stopper 81 simultaneously can be fine prevent that the goods from sliding and leading to dropping on support 2, guarantee the goods safety to can not hinder the discharge in-process, use more convenient.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (1)

1. The utility model provides a AGV commodity circulation is unloading structure for dolly, includes automobile body (1), its characterized in that, automobile body (1) upper end fixedly connected with support (2), support (2) upper end one side fixedly connected with riser (9), support (2) keep away from one side fixedly connected with two pillar (10) of riser (9), two equal fixedly connected with railing (16) between pillar (10) and riser (9), one side that pillar (10) were kept away from to riser (9) is through mount pad (3) fixedly connected with motor (4), motor (4) output fixedly connected with bull stick (14), bull stick (14) bottom is connected with pushing mechanism (6) through first bevel gear (15), pushing mechanism (6) are including first kerve (67), two second kerve (62), spread groove (64), screw (65), two guide arms (63), second bevel gear (66) and three installation piece (61), support (2) upper end is equipped with first kerve (67), first kerve (67) are equipped with on the both sides of support (2), first kerve (67) are equipped with under the first kerve (64), one end of the screw rod (65) stretches into the connecting groove (64), the screw rod (65) is rotationally connected with the connecting groove (64), a second bevel gear (66) is fixedly sleeved at the position of the screw rod (65) in the connecting groove (64), the second bevel gear (66) is meshed with the first bevel gear (15), guide rods (63) are fixedly connected in the two second bottom grooves (62), three mounting blocks (61) are respectively positioned in the first bottom groove (67) and the two second bottom grooves (62), the mounting blocks (61) positioned in the first bottom groove (67) are in threaded connection with the screw rod (65), the mounting blocks (61) positioned in the two second bottom grooves (62) are movably sleeved with the corresponding guide rods (63), and the first bevel gear (15) is fixedly sleeved at the bottom end of the rotating rod (14);

the utility model provides a motor (4) is kept away from to riser (9), one side that riser (9) kept away from is equipped with buffer gear (5), buffer gear (5) bottom and pushing mechanism (6) are connected, buffer gear (5) are including pushing plate (51), holding tank (57), buffer plate (52), blotter (56), two side slots (55), four branch (54) and four slider (53), pushing plate (51) fixed connection is in three installation piece (61) upper end, one side that riser (9) was kept away from to pushing plate (51) is equipped with holding tank (57), buffer plate (52) one side cover is established in holding tank (57), fixedly connected with blotter (56) between buffer plate (52) and holding tank (57) lateral wall, all be equipped with side slot (55) on holding tank (57) roof and the diapire, two all fixedly connected with two branch (54) in side slot (55), buffer plate (52) upper end and lower extreme all are fixedly connected with two slider (53), four slider (53) are equipped with respectively in four respectively in slider (53) and four branch (54) are equipped with recess (13);

the limiting mechanism (8) comprises a supporting plate (88), a second mounting groove (86), two second cross bars (87), a second sliding plate (84), a second spring (85), a first fixing block (89), a limiting block (81), a second fixing block (83) and a second connecting plate (82), wherein the supporting plate (88) is fixedly connected in the groove (13), one side of the upper end of the supporting plate (88) is provided with the second mounting groove (86), two second cross bars (87) are fixedly connected in the second mounting groove (86), the second sliding plate (84) is movably sleeved on the two second cross bars (87), two second springs (85) are fixedly connected between the second sliding plate (84) and the side wall of the second mounting groove (86), the two second springs (85) are respectively sleeved on the periphery of the two second cross bars (87), the other side of the upper end of the supporting plate (88) is fixedly connected with the first fixing block (89), the upper end of the first fixing block (89) is rotationally connected with the limiting block (81), the second sliding plate (84) is fixedly connected with the second fixing plate (83) close to the second side of the limiting block (83) through the second fixing plate (81), the limiting block (81) is arranged in an inclined state, the upper end of the second connecting plate (82) is rotationally connected with the second fixed block (83), the bottom end of the second connecting plate (82) is rotationally connected with the second sliding plate (84), one side of the limiting mechanism (8) is provided with a material guide plate (11), one side, far away from the support (2), of the material guide plate (11) is provided with an arc surface (12), one end, far away from the motor (4), of the support (2) is rotationally connected with the material guide plate (11), and one side, far away from the motor (4), of the vehicle body (1) is connected with the material guide plate (11) through the supporting mechanism (7);

the supporting mechanism (7) comprises a first mounting groove (73), two first cross rods (74), a first sliding plate (75), two first springs (76), a fixed plate (71) and a first connecting plate (72), wherein the first mounting groove (73) is formed in the bottom end of the material guiding plate (11), the two first cross rods (74) are fixedly connected in the first mounting groove (73), the first sliding plate (75) is movably sleeved on the two first cross rods (74), two first springs (76) are fixedly connected between the first sliding plate (75) and the side wall of the first mounting groove (73), the two first springs (76) are respectively sleeved on the periphery of the two first cross rods (74), the fixed plate (71) is fixedly connected to one side of the vehicle body (1), the upper end of the first connecting plate (72) is rotatably connected with the first sliding plate (75) through the first connecting plate (72), and the bottom end of the first connecting plate (72) is fixedly connected with the first connecting plate (71).