CN112959856A

CN112959856A - Coal-transporting handcart

Info

Publication number: CN112959856A
Application number: CN202110158460.7A
Authority: CN
Inventors: 郝艺迪
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-06-15

Abstract

The invention discloses a coal-transporting cart, which comprises a cart body, wherein the cart body comprises a fixed base, the fixed base is fixedly arranged at the bottom of the cart body, a rotating rod is rotatably arranged between the fixed bases, a traveling wheel is fixedly arranged on the rotating rod, and a movable cavity is formed in the traveling wheel; compared with the prior art, can produce the extrusion to the walking wheel through the track surface, make the memory metal sheet take place deformation inwards sunken, when the transport vechicle takes place slight jolt, can avoid walking wheel and orbital rigidity collision, can slow down the vibrations in the transportation, the absorbing effect has, and can prolong the orbital life of transportation, and when meetting the transport track surface and having great sunkenly, can make the gag lever post stretch out, support on worker shape track inner wall when the walking wheel will break away from the track, avoid the wooden handcart to drop from the track, can effectively reduce the transport speed of wooden handcart simultaneously, avoid the condition that the speed leads to appearing toppling at the excessive speed, influence conveying efficiency.

Description

Coal-transporting handcart

Technical Field

The invention relates to the technical field of coal mining, in particular to a coal-transporting plate car.

Background

Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are generally divided into underground coal mines and opencast coal mines. When the coal seam is far from the ground surface, a tunnel is usually dug to the underground, so that the coal is a mineworker coal mine. When the coal seam is very close to the earth surface, the coal is generally excavated by directly stripping the earth surface, which is an open pit coal mine. The vast majority of coal mines in China belong to underground coal mines. Coal mines encompass a large area above ground and below ground as well as associated facilities. Coal mines are reasonable spaces excavated by humans when excavating geological formations rich in coal and generally include roadways, wells, and mining surfaces, among others. Coal is the most predominant solid fuel, one of the flammable organic rocks. The coal mine is required to be transported after mining, but a plurality of depressions exist on the transportation rail due to long-time use, the transportation rail is easy to separate from the rail due to vibration in the transportation process, the transportation vehicle can overturn seriously, and the overall transportation efficiency can be influenced.

Disclosure of Invention

The invention aims to provide a coal conveying plate car to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a fortune wooden handcart for coal, includes the wooden handcart body, the wooden handcart body includes unable adjustment base, unable adjustment base fixed mounting is in wooden handcart body bottom, it is equipped with the bull stick to rotate between unable adjustment base, and fixed mounting has the walking wheel on the bull stick, the inside movable chamber of having seted up of walking wheel.

Preferably, the bottom of the inner wall of the movable cavity is fixedly connected with a memory metal plate, the side wall of the movable cavity is symmetrically provided with a pair of extrusion blocks, the extrusion blocks are rotatably arranged on the side wall of the movable cavity, the bottom of the extrusion block is fixedly connected with a V-shaped plate, the V-shaped plate has elasticity, the inner wall of the V-shaped plate is fixedly connected with an elastic rod, the movable cavity is internally and fixedly connected with a connecting block, a pair of air pressure cavities are arranged in the connecting block, the bottom of the air pressure cavity is fixedly connected with an elastic membrane, the air outlet pipe is arranged on the air pressure cavity, the vent pipe is fixedly connected with a vent plate, the bottom of the vent plate is fixedly connected with a close return spring, the bottom of the close return spring is fixedly connected with a piston ball, the piston ball abuts against the air outlet pipe, the movable cavity, a backflow cavity is arranged between the air pressure cavities, a backflow pipe is fixedly connected to the backflow cavity and is fixedly connected to the bottom of the air storage cavity, a connecting pipe is fixedly connected to the air storage cavity, the memory metal plate is deformed and is inwards sunken, the V-shaped plate can be deformed and is driven to rotate, the elastic membrane can be extruded, gas in the air pressure cavity can extrude the piston ball, the reset spring contracts, the gas can be conveyed to the air storage cavity through the vent plate, the memory metal plate can reset when the transport vehicle slightly jolts, the V-shaped plate can reset under the action of the elastic rod, the extrusion of the elastic membrane by the extrusion block disappears, the gas in the air storage cavity is conveyed to the backflow cavity through the backflow pipe, and finally the gas flows back to the air pressure cavity through the backflow pipe, so that rigid collision between a travelling wheel and a track can be avoided, and vibration in the transportation process can be slowed down, has the effect of shock absorption.

Preferably, backward flow intracavity fixedly connected with fixed plate, fixedly connected with dead lever on the fixed plate, dead lever top fixedly connected with block rubber, backward flow chamber both ends are equipped with the muffler, muffler one end fixed connection is on the atmospheric pressure chamber, it is provided with the slide to slide in the backward flow intracavity, a pair of elastic plate of slide one end fixedly connected with, elastic plate one end fixed connection is at backward flow intracavity wall top, the spacing groove has been seted up to the slide other end, and atmospheric pressure increases and can produce the extrusion to the slide, makes the slide move down, makes spacing groove and block rubber joint.

Preferably, a pair of inlet port has been seted up on the slide, it is equipped with a pair of movable block to rotate on the inlet port inner wall, the movable block has elasticity, fixedly connected with elasticity rope on the movable block inner wall, elasticity rope one end fixed connection is on the inlet port inner wall, fixedly on the movable block outer wall being equipped with a plurality of extrusion balls, when gaseous gets into the backward flow intracavity through the back flow fast, can make the movable block take place deformation and rotate, the extrusion ball laminating on the movable block is in the same place, and gaseous unable inlet port entering backward flow chamber that passes through this moment.

Preferably, a limiting mechanism is arranged in the sliding plate, the limiting mechanism comprises an air inlet groove, the air inlet groove is fixedly arranged in the sliding plate, a plurality of special-shaped cavities are fixedly connected to the side wall of the air inlet groove, an extrusion plate is fixedly connected to the inner part of the special-shaped cavities, an air bag is arranged at one end of the extrusion plate and is abutted against the extrusion plate, a piston rod is fixedly connected to the other end of the extrusion plate, a limiting plate is fixedly connected to the inner part of the air inlet groove, a return spring is fixedly connected to the limiting plate, a blocking ball is fixedly connected to the return spring, the diameter of the blocking ball is slightly larger than the outer diameter of the air inlet groove, a pair of air inlet pipes are fixedly connected to the two ends of the air inlet groove, when gas cannot enter the backflow cavity through the air inlet hole, the gas can extrude the sliding plate to move, can make gaseous entering air inlet duct, can drive the gasbag motion, make the stripper plate take place deformation, produce the extrusion to the piston rod, make the piston rod outwards stretch out, one end supports on the rubber block surface, plays limiting displacement.

Preferably, the inside drive mechanism that is equipped with of walking wheel, drive mechanism includes the transmission chamber, the transmission intracavity rotates and is equipped with the pivot, be equipped with the tooth in the pivot, fixedly connected with carousel in the pivot, fixedly connected with fixed axle on the carousel lateral wall, connecting pipe bottom fixedly connected with arc wall, and slide in the arc wall and be equipped with the arc pole, the arc pole surface is equipped with a plurality of teeth, arc pole and pivot meshing, the arc pole can stretch out under atmospheric pressure's effect, can drive the pivot and rotate to can make the carousel rotate.

Preferably, the pivot bottom activity is inserted and is equipped with the gag lever post, gag lever post one side is equipped with a plurality of fixed axles, the gag lever post offsets with the carousel, and the carousel rotates, and intermeshing's fixed axle interact can make the gag lever post stretch out, supports on worker shape track inner wall when the walking wheel will break away from the track, avoids the wooden handcart to drop from the track.

Preferably, the stopper rod surface is equipped with a plurality of elastic walls and sucking disc, the inside fixed telescopic link that is equipped with of elastic wall, the telescopic link both ends articulate has a pair of hinge bar, hinge bar one end fixed connection is on the elastic wall inner wall, the elastic wall surface is equipped with the frictional layer, and is equipped with a plurality of clutch blocks in the frictional layer, and the elastic wall on stopper rod surface can produce the extrusion with I-shaped track inner wall and take place deformation, can make the telescopic link withdrawal, plays the cushioning effect, and the elastic wall surface makes can increase with the orbital area of contact of I-shaped at deformation simultaneously, increases frictional force, and the sucking disc can adsorb on I-shaped track is inside, can effectively reduce the transport speed of wooden handcart, avoids the too fast condition that leads to appearing toppling, influences conveying efficiency.

Compared with the prior art, the invention has the beneficial effects that:

1. the walking wheels can be extruded through the surface of the track, the memory metal plate is deformed and sunken inwards, the V-shaped plate can be deformed, the extrusion block is driven to rotate, the elastic membrane can be extruded, gas in the air pressure cavity can extrude the piston ball, the reset spring is contracted, and the gas can be conveyed to the gas storage cavity through the vent plate;

2. the memory metal plate is greatly deformed to drive the movable block to rotate, gas in the gas pressure cavity is quickly conveyed into the gas storage cavity, when the gas quickly enters the backflow cavity through the backflow pipe, the movable block is deformed and rotates, the extrusion balls on the movable block are attached together, the gas cannot enter the backflow cavity through the gas inlet at the moment, and finally when the gas in the gas storage cavity cannot flow back, the gas can be conveyed to the arc-shaped groove through the connecting pipe, the arc-shaped rod can extend out under the action of the gas pressure to drive the rotating shaft to rotate, so that the turntable can rotate, the limiting rods can extend out under the interaction of the mutually meshed fixed shafts, and when the walking wheels are separated from the track, the walking wheels abut against the inner wall of the I-shaped track to avoid the plate trailer from falling off the track;

3. the elastic wall on the surface of the limiting rod can be extruded with the inner wall of the I-shaped track to deform, the piston rod can retract, the buffering effect is achieved, the service life of the limiting rod is prolonged, meanwhile, the contact area between the elastic wall surface and the I-shaped track can be increased due to deformation, the friction force is increased, the sucker can be adsorbed on the inner portion of the I-shaped track, the transportation speed of the plate trailer can be effectively reduced, the phenomenon that the plate trailer overturns due to too high speed is avoided, and the transportation efficiency is influenced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional schematic view of a road wheel of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B according to the present invention;

FIG. 5 is an enlarged view of a portion of the slide plate of the present invention;

FIG. 6 is an enlarged view of a portion of the invention at C of FIG. 5;

fig. 7 is an enlarged view of a part of the limiting rod according to the present invention;

in the figure: 1. a pallet body; 2. a traveling wheel; 3. an air inlet; 4. a limiting mechanism; 5. a transmission mechanism; 11. a fixed base; 21. a movable cavity; 211. a memory metal plate; 22. extruding the block; 23. a pneumatic chamber; 231. a breather plate; 232. a piston ball; 233. an elastic film; 24. a gas storage cavity; 241. a connecting pipe; 25. a V-shaped plate; 26. a reflux cavity; 261. a fixing plate; 27. a slide plate; 271. an elastic plate; 272. a limiting groove; 28. an air return pipe; 29. fixing the rod; 31. a movable block; 32. an elastic cord; 41. an air inlet groove; 42. an air inlet pipe; 43. blocking the ball; 44. a limiting plate; 45. a pressing plate; 451. a piston rod; 46. an air bag; 47. a profiled cavity; 51. a turntable; 52. an arcuate bar; 53. a transmission cavity; 54. a rotating shaft; 55. a limiting rod; 56. a telescopic rod; 57. a resilient wall; 571. a hinged lever; 58. and (4) sucking discs.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a handcart for coal transportation, includes the handcart body 1, and the handcart body 1 includes unable adjustment base 11, and unable adjustment base 11 fixed mounting is in the 1 bottom of handcart body, and the rotation is equipped with the bull stick between unable adjustment base 11, and fixed mounting has walking wheel 2 on the bull stick, and 2 inside movable chamber 21 of having seted up of walking wheel.

The bottom of the inner wall of the movable cavity 21 is fixedly connected with a memory metal plate 211, the side wall of the movable cavity 21 is symmetrically provided with a pair of extrusion blocks 22, the extrusion blocks 22 are rotatably arranged on the side wall of the movable cavity 21, the bottom of the extrusion blocks 22 is fixedly connected with a V-shaped plate 25, the V-shaped plate 25 has elasticity, the inner wall of the V-shaped plate 25 is fixedly connected with an elastic rod, the movable cavity 21 is internally and fixedly connected with a connecting block, the connecting block is internally provided with a pair of air pressure cavities 23, the bottom of the air pressure cavity 23 is fixedly connected with an elastic membrane 233, the air outlet cavity 23 is provided with an air outlet pipe, the air outlet pipe is fixedly connected with a vent plate 231, the bottom of the vent plate 231 is fixedly connected with a return spring, the bottom of the return spring is fixedly connected with a piston ball 232, the piston ball 232 abuts against the air outlet pipe, the air, the return pipe is fixedly connected to the return cavity 26 and fixedly connected to the bottom of the gas storage cavity 24, the connecting pipe 241 is fixedly connected to the gas storage cavity 24, so that the memory metal plate 211 deforms and is recessed inwards, the V-shaped plate 25 deforms and drives the extrusion block 22 to rotate and extrude the elastic membrane 233, so that gas in the gas pressure cavity 23 extrudes the piston ball 232, the return spring contracts, so that the gas can be conveyed to the gas storage cavity 24 through the vent plate 231, when the transport vehicle slightly bumps, the memory metal plate 211 can reset, the V-shaped plate 25 can reset under the action of the elastic rod, so that the extrusion block 22 extrudes the elastic membrane 233, the gas in the gas storage cavity 24 is conveyed to the return cavity 26 through the return pipe, and finally the gas flows back to the gas pressure cavity 23 through the return pipe 28, so that rigid collision between the traveling wheel 2 and a track can be avoided, and vibration in the transportation process can be relieved, has the effect of shock absorption.

Fixedly connected with fixed plate 261 in return flow chamber 26, fixedly connected with dead lever 29 on the fixed plate 261, dead lever 29 top fixedly connected with block rubber, return flow chamber 26 both ends are equipped with muffler 28, muffler 28 one end fixed connection is on atmospheric pressure chamber 23, it is provided with slide 27 to slide in the return flow chamber 26, a pair of elastic plate 271 of slide 27 one end fixedly connected with, elastic plate 271 one end fixed connection is at return flow chamber 26 inner wall top, spacing groove 272 has been seted up to the slide 27 other end, the atmospheric pressure increase can produce the extrusion to slide 27, make slide 27 remove downwards, make spacing groove 272 and block rubber joint.

Seted up a pair of inlet port 3 on the slide 27, it is equipped with a pair of movable block 31 to rotate on the 3 inner walls of inlet port, movable block 31 has elasticity, fixed connection elasticity rope 32 on the movable block 31 inner wall, elasticity rope 32 one end fixed connection is on the 3 inner walls of inlet port, the fixed a plurality of extrusion balls that are equipped with on the movable block 31 outer wall, when gas gets into the backward flow chamber 26 through the back flow fast, can make movable block 31 take place deformation and rotate, the extrusion ball laminating on the movable block 31 is in the same place, gaseous unable inlet port 3 entering backward flow chamber 26 that passes through this moment.

The limiting mechanism 4 is arranged in the sliding plate 27, the limiting mechanism 4 comprises an air inlet groove 41, the air inlet groove 41 is fixedly arranged in the sliding plate 27, a plurality of special-shaped cavities 47 are fixedly connected to the side wall of the air inlet groove 41, an extrusion plate 45 is fixedly connected to the inside of the special-shaped cavities 47, an air bag 46 is arranged at one end without the extrusion plate 45 and abuts against the extrusion plate 45, a piston rod 451 is fixedly connected to the other end of the extrusion plate 45, a limiting plate 44 is fixedly connected to the inside of the air inlet groove 41, a return spring is fixedly connected to the limiting plate 44, a blocking ball 43 is fixedly connected to the return spring, the diameter of the blocking ball 43 is slightly larger than the outer diameter of the air inlet groove 41, a pair of air inlet pipes 42 are fixedly connected to two ends of the air inlet groove 41, when air cannot enter the backflow cavity 26 through the air inlet hole 3, the air can extrude the sliding, can make gas entering air inlet 41, can drive gasbag 46 motion, make stripper plate 45 take place the deformation, produce the extrusion to piston rod 451, make piston rod 451 stretch out outwards, one end supports on the rubber block surface, plays limiting displacement.

The inside drive mechanism 5 that is equipped with of walking wheel 2, drive mechanism 5 includes transmission chamber 53, the internal rotation of transmission chamber 53 is equipped with pivot 54, be equipped with the rodent on the pivot 54, fixedly connected with carousel 51 on the pivot 54, fixedly connected with fixed axle on the carousel 51 lateral wall, connecting pipe 241 bottom fixedly connected with arc wall, and slide in the arc wall and be equipped with arc pole 52, arc pole 52 surface is equipped with a plurality of rodents, arc pole 52 and pivot 54 meshing, arc pole 52 can stretch out under the effect of atmospheric pressure, can drive pivot 54 and rotate, thereby can make carousel 51 rotate.

The bottom of the rotating shaft 54 is movably inserted with a limiting rod 55, one side of the limiting rod 55 is provided with a plurality of fixing shafts, the limiting rod 55 abuts against the turntable 51, the turntable 51 rotates, the mutually-meshed fixing shafts can mutually extend out the limiting rod 55, and when the walking wheels 2 are separated from the track, the walking wheels abut against the inner wall of the I-shaped track, so that the plate trailer is prevented from falling off from the track.

The surface of the limiting rod 55 is provided with a plurality of elastic walls 57 and suckers 58, the elastic walls 57 are internally and fixedly provided with telescopic rods 56, two ends of each telescopic rod 56 are hinged with a pair of hinge rods 571, one ends of the hinge rods 571 are fixedly connected to the inner wall of each elastic wall 57, the surface of each elastic wall 57 is provided with a friction layer, a plurality of friction blocks are arranged in each friction layer, the elastic walls 57 on the surface of the limiting rod 55 can be extruded with the inner wall of an I-shaped rail to deform, the telescopic rods 56 can retract, a buffering effect is achieved, meanwhile, the contact area between the elastic walls 57 and the I-shaped rail can be increased due to the fact that the surfaces of the elastic walls 57 deform, friction force is increased, the suckers 58 can be adsorbed on the inner part of the I-shaped rail, the transportation speed of.

The working principle is as follows: firstly, in the transportation process of a coal mine, the surface of a track can extrude a traveling wheel 2, so that a memory metal plate 211 deforms and is sunken inwards, a V-shaped plate 25 can deform to drive an extrusion block 22 to rotate, an elastic membrane 233 can be extruded, gas in a pressure cavity 23 can extrude a piston ball 232, a return spring contracts, the gas can be conveyed to a gas storage cavity 24 through a vent plate 231, when a transport vehicle slightly bumps, the memory metal plate 211 can reset, the V-shaped plate 25 can reset under the action of an elastic rod, so that the extrusion block 22 can not extrude the elastic membrane 233, the gas in the gas storage cavity 24 can be conveyed to a backflow cavity 26 through a backflow pipe, and finally the gas flows back to the pressure cavity 23 through a backflow pipe 28, so that the rigid collision between the traveling wheel 2 and the track can be avoided, the vibration in the transportation process can be relieved, and the shock absorption effect is achieved, and can prolong the service life of the transportation track, then when the transportation track has a large-range depression in the transportation process, the memory metal plate 211 can generate large deformation and can drive the extrusion block 22 to rotate, the gas in the gas pressure chamber 23 can be rapidly conveyed into the gas storage chamber 24, when the gas rapidly enters the return chamber 26 through the return pipe, the movable block 31 can be deformed and rotated, the extrusion balls on the movable block 31 are attached together, at the moment, the gas can not enter the return chamber 26 through the gas inlet hole 3, and simultaneously, the gas can extrude the sliding plate 27, so that the sliding plate 27 moves downwards, the limit groove 272 is connected with the rubber block in a clamping way, meanwhile, the gas pressure is increased to retract the blocking ball 43, the gas can enter the gas inlet groove 41, the gas bag 46 can be driven to move, the extrusion plate 45 can be deformed, the piston rod 451 can be extruded, the piston rod 451 extends outwards, one end is abutted against the surface of the rubber, the limiting function is achieved, when gas in the gas storage cavity 24 cannot flow back at last, the gas can be conveyed to the arc-shaped groove through the connecting pipe 241, the arc-shaped rod 52 can extend under the action of air pressure and can drive the rotating shaft 54 to rotate, so that the turntable 51 can rotate, the limiting rod 55 can extend under the interaction of the mutually meshed fixed shafts, when the travelling wheel 2 is separated from the track, the travelling wheel abuts against the inner wall of the I-shaped track to prevent the plate trailer from falling off from the track, meanwhile, the elastic wall 57 on the surface of the limiting rod 55 can extrude and deform with the inner wall of the I-shaped track to retract the telescopic rod 56 to play a buffering role, meanwhile, the contact area between the elastic wall 57 and the I-shaped track can be increased due to the deformation of the surface of the elastic wall 57, the friction force is increased, the sucking disc 58 can be adsorbed on the inner part of the I-shaped track to effectively reduce the transportation, affecting the efficiency of transportation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A coal-transporting board vehicle comprises a board vehicle body (1), and is characterized in that: the plate trailer body (1) comprises a fixed base (11), the fixed base (11) is fixedly installed at the bottom of the plate trailer body (1), a rotating rod is arranged between the fixed base (11) in a rotating mode, a travelling wheel (2) is fixedly installed on the rotating rod, and a movable cavity (21) is formed in the travelling wheel (2).

2. A coal handling cart as defined in claim 1, wherein: the movable cavity (21) is fixedly connected with a memory metal plate (211) at the bottom of the inner wall, a pair of extrusion blocks (22) is symmetrically arranged on the side wall of the movable cavity (21), the extrusion blocks (22) are rotatably arranged on the side wall of the movable cavity (21), a V-shaped plate (25) is fixedly connected at the bottom of the extrusion blocks (22), the V-shaped plate (25) has elasticity, an elastic rod is fixedly connected on the inner wall of the V-shaped plate (25), a connecting block is fixedly connected in the movable cavity (21), a pair of air pressure cavities (23) are arranged in the connecting block, an elastic membrane (233) is fixedly connected at the bottom of each air pressure cavity (23), an air outlet pipe is arranged on each air pressure cavity (23), a vent plate (231) is fixedly connected in the air outlet pipe, and a reset spring is fixedly connected at the bottom of the vent plate (231), piston ball (232) support on the outlet duct, be equipped with gas storage chamber (24) in activity chamber (21), gas storage chamber (24) are fixed to be set up in the connecting block top, and outlet duct fixed connection is at gas storage chamber (24) both ends, be equipped with backward flow chamber (26) between atmospheric pressure chamber (23), fixedly connected with back flow on backward flow chamber (26), and back flow fixed connection is in gas storage chamber (24) bottom, fixedly connected with connecting pipe (241) on gas storage chamber (24).

3. A coal handling cart as defined in claim 2, wherein: fixedly connected with fixed plate (261) in backward flow chamber (26), fixedly connected with dead lever (29) is gone up in fixed plate (261), dead lever (29) top fixedly connected with block rubber, backward flow chamber (26) both ends are equipped with muffler (28), muffler (28) one end fixed connection is on atmospheric pressure chamber (23), it is provided with slide (27) to slide in backward flow chamber (26), a pair of elastic plate (271) of slide (27) one end fixedly connected with, elastic plate (271) one end fixed connection is at backward flow chamber (26) inner wall top, spacing groove (272) have been seted up to slide (27) the other end.

4. A coal handling cart as defined in claim 3, wherein: the improved air compressor is characterized in that a pair of air inlet holes (3) are formed in the sliding plate (27), a pair of movable blocks (31) are arranged on the inner walls of the air inlet holes (3) in a rotating mode, the movable blocks (31) have elasticity, elastic ropes (32) are fixedly connected to the inner walls of the movable blocks (31), one ends of the elastic ropes (32) are fixedly connected to the inner walls of the air inlet holes (3), and a plurality of extrusion balls are fixedly arranged on the outer walls of the movable blocks (31).

5. A coal handling cart as defined in claim 3, wherein: a limiting mechanism (4) is arranged in the sliding plate (27), the limiting mechanism (4) comprises an air inlet groove (41), the air inlet groove (41) is fixedly arranged in the sliding plate (27), a plurality of special-shaped cavities (47) are fixedly connected to the side wall of the air inlet groove (41), an extrusion plate (45) is fixedly connected to the inner part of the special-shaped cavity (47), an air bag (46) is arranged at one end without the extrusion plate (45), the air bag (46) is abutted against the extrusion plate (45), the other end of the extrusion plate (45) is fixedly connected with a piston rod (451), a limiting plate (44) is fixedly connected inside the air inlet groove (41), a return spring is fixedly connected on the limiting plate (44), and a blocking ball (43) is fixedly connected on the return spring, the diameter of the blocking ball (43) is slightly larger than the outer diameter of the air inlet groove (41), and a pair of air inlet pipes (42) is fixedly connected to the two ends of the air inlet groove (41).

6. A coal handling cart as defined in claim 2, wherein: the walking wheel (2) is inside to be equipped with drive mechanism (5), drive mechanism (5) are including transmission chamber (53), transmission chamber (53) internal rotation is equipped with pivot (54), be equipped with the rodent on pivot (54), fixedly connected with carousel (51) are gone up in pivot (54), fixedly connected with fixed axle on carousel (51) lateral wall, connecting pipe (241) bottom fixedly connected with arc wall, and slide in the arc wall and be equipped with arc pole (52), arc pole (52) surface is equipped with a plurality of rodents, arc pole (52) and pivot (54) meshing.

7. The coal handling cart according to claim 6, wherein: the bottom of the rotating shaft (54) is movably inserted with a limiting rod (55), one side of the limiting rod (55) is provided with a plurality of fixing shafts, and the limiting rod (55) is abutted to the turntable (51).

8. A coal handling cart as defined in claim 7, wherein: the surface of the limiting rod (55) is provided with a plurality of elastic walls (57) and suckers (58), an expansion rod (56) is fixedly arranged inside the elastic wall (57), two ends of the expansion rod (56) are hinged with a pair of hinge rods (571), one end of each hinge rod (571) is fixedly connected to the inner wall of the elastic wall (57), the surface of the elastic wall (57) is provided with a friction layer, and a plurality of friction blocks are arranged in the friction layer.