CN110901685B - Anti-sliding device - Google Patents

Abstract

The invention relates to a coal mine safety device, in particular to a sports car preventing device. The anti-sports car device includes: a centralized control box and an intercepting device, the centralized control box is located above the intercepting device along the ascending direction of the inclined lane, a speed monitoring device is arranged on the centralized control box, and the centralized control box is electrically connected with the speed monitoring device; The device includes a support base, a first sliding shaft, a second sliding shaft, a front wheel blocking block, a rear wheel blocking block, a first spring, a second spring, an electro-hydraulic push rod, a sliding rod, an electro-hydraulic The push rod is electrically connected with the centralized control box. The invention uses the front wheel blocking block to drive the rear wheel blocking block to block the front and rear wheels of the mine truck at the same time, so as to avoid the deformation or damage of the mining truck body caused by the blocking equipment when blocking the mining truck body, which may cause the inside of the mining truck to be damaged. The loaded equipment was crushed, and the overturning and derailment accidents caused by blocking only the front wheels of the minecart were also avoided.

Description

Anti-sports car device

technical field

The invention relates to a coal mine safety device, in particular to a sports car preventing device.

Background technique

In the actual production process of the mine, the biggest hidden danger of inclined alley transportation is the occurrence of sports car accidents, that is, during the transportation of vehicles in the inclined alley, the broken rope, out-of-stock chain, misoperation, etc., will cause the vehicle to have sports cars. All kinds of car blockers are set in the lane to prevent the vehicle from sliding down. When the set car blocker is used to block the body of the minecart, due to the large impulse of the sports car, it is easy to cause the deformation or destruction of the body of the minecart, which not only increases the number of minecarts and The maintenance cost of the car blocker can also easily lead to the collapse of the equipment loaded in the mine car due to the deformation of the car body. The overturning and derailing accidents of mine carts increase the risk factor of braking.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an anti-sports car device, which uses the friction between the brake plate fixed on the mining car and the auxiliary rail to brake the mining car that has a sports car accident in the inclined lane, thereby effectively avoiding the mining car and blocking the car. The destruction of the equipment and the overturning or derailment of the mine cart occur.

In the present invention, the anti-sports car device includes: a centralized control box and an intercepting device. The centralized control box is located above the intercepting device along the ascending direction of the inclined lane. The centralized control box is provided with a speed monitoring device. The centralized control box is electrically connected to the speed monitoring device. connect;

The intercepting device includes a support seat, a first sliding shaft, a second sliding shaft, a front wheel blocking block, a rear wheel blocking block, a first spring, a second spring, an electro-hydraulic push rod, and a sliding rod which are symmetrically arranged on the left and right sides. , the electro-hydraulic push rod is electrically connected to the centralized control box;

The above-mentioned support seat is fixedly installed below the inclined lane rail, the inclination angle of the support base and the inclined lane track is consistent, the first sliding shaft and the second sliding shaft are installed on the support base, and the second sliding shaft is located in the first sliding shaft along the rising direction of the inclined lane. Above the sliding shaft, the front wheel blocking block is installed on the first sliding shaft, the rear wheel blocking block is installed on the second sliding shaft, the front wheel blocking block drives the rear wheel blocking block to rotate, and the first spring is sleeved on the second sliding shaft. On a sliding shaft, the second spring is sleeved on the second sliding shaft, the electro-hydraulic push rod is installed on the support base, the electro-hydraulic push rod is vertically connected with the sliding rod, the front wheel blocking block is connected with the sliding rod, and the front wheel blocking block is connected to the sliding rod. The block rotates along the first sliding axis under the driving of the sliding rod;

The front wheel blocking block includes: a rectangular blocking part, a pivot part connected below the front end of the blocking part; The first shaft hole is matched with the first sliding shaft, and the bottom surface of the pivot part is provided with sliding grooves penetrating the left and right sides thereof;

The above-mentioned linking part is composed of an "L"-shaped connecting rod and an abutting block. One end of the connecting rod is vertically fixed on a front face of the blocking part, and the other end extends horizontally to the right and is connected with the abutting block. The cross-section of the abutting block is It is a right-angled trapezoid, and its face facing the blocking part 1 is an inclined plane;

The rear wheel blocking block comprises: a rectangular blocking part 2, a pivoting part 2 connected to the lower right side of the blocking part 2, and a counterweight part connected to the upper right side of the blocking part 2, and the counterweight part extends to the right. On the right side of the second pivoting part, the second pivoting part is provided with a second shaft hole passing through the front and the rear thereof, the second shaft hole is matched with the second sliding shaft, and the overall center of gravity of the rear wheel blocking block is located on the right side of the second shaft hole ;

The distance from the blocking part of the front wheel blocking block to the front wheel blocking block to the surface of the abutting block facing the track is not greater than the distance between the central axes of the front and rear wheels of the mine car, and the blocking part of the front wheel blocking block 1. The distance from the surface of the rear wheel blocking block facing the blocking part 1 is not less than the diameter of the mine car wheel, and the distance from the blocking part 1 of the front wheel blocking block to the surface of the rear wheel blocking block facing away from the blocking part 1 is not greater than the front The distance between the blocking part of the wheel blocking block and the abutting block of the front wheel blocking block, the length of the abutting block of the front wheel blocking block along the rail direction is not less than the length of the rear wheel blocking block along the rail direction.

In one embodiment, the height of the blocking part 1 of the front wheel blocking block of the anti-sports car device is not less than the radius of the wheel of the mine cart.

In one embodiment, the height of the second blocking part of the rear wheel blocking block of the anti-sports car device is not less than the radius of the wheel of the mine cart.

In one embodiment, the distance between the sliding rod and the first sliding shaft is not greater than the length of the sliding groove of the front wheel block.

In one embodiment, the elasticity of the first spring of the anti-sports car device is smaller than the elasticity of the second spring.

In one embodiment, the front right end of the second blocking part of the rear wheel blocking block of the anti-sports car device is provided with a rounded corner structure.

Beneficial effects of the present invention:

1. The present invention uses the front wheel blocking block and the rear wheel blocking block to block the sliding mine cart, which effectively avoids the deformation or deformation of the mining cart body due to the large impulse of the sports car when the blocking equipment blocks the mining cart body. Destruction, and the collapse of the equipment loaded in the minecart due to the deformation of the minecart body.

2. The present invention uses the front wheel blocking block to drive the rear wheel blocking block to rotate, completes the simultaneous blocking of the front and rear wheels of the mine truck, and effectively avoids the overturn caused by blocking only the front wheel of the mine truck in the inclined lane environment. and derailment accidents.

3. The present invention utilizes the first spring and the second spring to buffer the impact force of the mine cart at the same time, so that the impact force of the anti-sports car device when intercepting the mine cart is reduced, and the safety of the equipment can be effectively protected.

Description of drawings

FIG. 1 is a schematic diagram of the position of the present invention in the inclined lane.

Figure 2 is a top view of the intercepting device of the present invention.

FIG. 3 is a schematic structural diagram of the support seat of the present invention.

FIG. 4 is a schematic structural diagram of the front wheel blocking block of the present invention.

FIG. 5 is a schematic structural diagram of the rear wheel blocking block of the present invention.

FIG. 6 is a schematic structural diagram of the intercepting device of the present invention installed on an inclined lane rail.

FIG. 7 is a schematic diagram of the front wheel of the mine car colliding with the front wheel blocking block when a sports car accident occurs according to the present invention.

8 is a schematic diagram of the present invention when the front and rear wheels of the mining cart collide with the front wheel blocking block and the rear wheel blocking block respectively when a sports car accident occurs.

FIG. 9 is a schematic structural diagram of a rear wheel blocking block in another embodiment of the present invention.

Description of drawings: centralized control box 1, interception device 2, support base 21, first beam 211, second beam 212, third beam 213, first support beam 214, second support beam 215, lugs 216, first Sliding shaft 22, second sliding shaft 23, front wheel blocking block 24, blocking part 1 241, pivot part 1 242, shaft hole 1 2421, sliding groove 2422, linking part 243, connecting rod 2431, abutting block 2432 , the rear wheel blocking block 25, the second blocking part 251, the second pivot part 252, the second shaft hole 2521, the counterweight part 253, the first spring 26, the second spring 27, the electro-hydraulic push rod 28, the sliding rod 29,

Detailed ways

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the invention pertains can easily implement the embodiments. However, the present invention can also be implemented in various forms, and thus the present invention is not limited to the embodiments described hereinafter. In addition, in order to describe the present invention more clearly, components not connected with the present invention will be omitted from the drawings.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The specific orientation configuration and operation that the device or element referred to must have and therefore should not be construed as a limitation of the invention.

As shown in Figure 1, the anti-sports car device includes: a centralized control box 1 and an intercepting device 2, the centralized control box 1 and the intercepting device 2 are arranged in the inclined lane, and the centralized control box 1 is located above the intercepting device 2 along the ascending direction of the inclined lane;

The centralized control box 1 is arranged on one side of the inclined lane track, and a speed monitoring device (not shown in the figure) is arranged on the centralized control box 1. The centralized control box 1 is electrically connected with the speed monitoring device, and the speed monitoring device is connected to the inclined lane. The running speed of the mining cart is monitored. When the speed of the mining cart is higher than the set value, the speed monitoring device sends a signal to the centralized control box 1;

As shown in FIG. 2 , the intercepting device 2 includes: a support base 21 , a first sliding shaft 22 , a second sliding shaft 23 , a front wheel blocking block 24 , a rear wheel blocking block 25 , a first spring 26 , a second The spring 27, the electro-hydraulic push rod 28, the sliding rod 29, the electro-hydraulic push rod 28 is electrically connected with the centralized control box 1, when the centralized control box 1 receives the signal from the speed monitoring device, it controls the push rod of the electro-hydraulic push rod 28 roll out;

As shown in FIG. 3 , the above-mentioned support base 21 is a "king"-shaped frame structure, including: a first beam 211, a second beam 212, a third beam 213, a first support beam 214, a second support beam 215, a first beam 211, a second beam 212, A beam 211, a second beam 212, and a third beam 213 are arranged in parallel in sequence, the first support beam 214 is vertically connected between the first beam 211 and the second beam 212, and the second support beam 215 is vertically connected to the second beam 212 and the third beam 213, the distance between the first beam 211 and the second beam 212 is greater than the distance between the second beam 212 and the third beam 213, the first beam 211, the second beam 212, the third beam A lug 216 is fixedly installed on the upper surface of the 213 symmetrically from left to right;

As shown in FIG. 4 , the front wheel blocking block 24 includes: a rectangular blocking portion 1 241 , a pivot portion 1 242 connected below the front end of the blocking portion 1 241 , and a link portion 243 , wherein the pivot portion 1 242 is provided with Shaft hole 1 2421 penetrates through the left and right sides thereof, the shaft hole 1 2421 is matched with the first sliding shaft 22, and the bottom surface of the pivot part 1 242 is provided with a sliding groove 2422 penetrating the left and right sides thereof;

The above-mentioned linkage part 243 is composed of an "L"-shaped connecting rod 2431 and an abutting block 2432. One end of the connecting rod 2431 is vertically fixed on the front of the blocking part 1 241, and the other end extends horizontally to the right and is connected with the abutting block 2432. The cross section of the abutting block 2432 is a right-angled trapezoid, and its surface facing the blocking part 1 241 is an inclined surface, which can drive the rear wheel blocking block 25 to rotate when the front wheel blocking block 24 slides;

As shown in FIG. 5 , the rear wheel blocking block 25 includes: a rectangular blocking portion 251 , a pivoting portion 252 connected to the lower right side of the blocking portion 2 251 , and a counterweight connected to the upper right side of the blocking portion 2 251 . The counterweight part 253 extends rightward to the right side of the second pivot part 252 , and the second pivot part 252 is provided with a second shaft hole 2521 penetrating the front and rear of the second shaft hole 2521 , and the second shaft hole 2521 is in phase with the second sliding shaft 23 Matching, the overall center of gravity of the rear wheel blocking block 25 is located on the right side of the second shaft hole 2521, so that the rear wheel blocking block 25 can rotate along the second sliding shaft 23 under the action of its own gravity;

As shown in Figures 2-5, the above-mentioned intercepting device 2 has a left-right symmetrical structure, and its right-side structure is: a first sliding shaft 22 is fixed between the lugs 216 on the right side of the first beam 211 and the second beam 212, and the left-right symmetrical The two first sliding shafts 22 are parallel to each other, and an electro-hydraulic push rod 28 is installed horizontally on the right side of the first support beam 214 near the second cross beam 212. The electro-hydraulic push rod 28 is perpendicular to the first sliding shaft 22 and is located in the Below the first sliding shaft 22, the push rod of the electro-hydraulic push rod 28 is vertically connected to one end of the sliding rod 29, the other end of the sliding rod 29 extends toward the first beam 211, the sliding rod 29 is parallel to the first sliding shaft 22, and the front The wheel blocking block 24 is sleeved on the first sliding shaft 22 through the shaft hole 1 2421, the linkage part 243 of the front wheel blocking block 24 is located on the right side of the first sliding shaft 22, and the sliding groove 2422 of the front wheel blocking block 24 The front wheel blocking block 24 rotates along the first sliding shaft 22 under the driving of the sliding rod 29, the first spring 26 is sleeved on the first sliding shaft 22, and the two ends of the first spring 26 are respectively mounted on the sliding rod 29. It is fixedly connected with the lug 216 on the right side of the first beam 211 and the front wheel blocking block 24 , and a second sliding shaft 23 is fixed between the second beam 212 and the lug 216 on the right side of the third beam 213 . 23 is coaxial with the first sliding shaft 22, the rear wheel blocking block 25 is sleeved on the second sliding shaft 23 through the shaft hole two 2521 and can rotate along the second sliding shaft 23, and the counterweight portion 253 of the rear wheel blocking block 25 Located on the right side of the second sliding shaft 23, the second spring 27 is sleeved on the second sliding shaft 23, and the two ends of the second spring 27 are respectively fixed with the lug 216 on the right side of the second beam 212 and the rear wheel blocking block 25 connected, the length of the first spring 26 is greater than the length of the second spring 27;

As shown in FIG. 6 , the support base 21 of the above-mentioned intercepting device 2 is fixedly installed under the inclined lane rail, the support base 21 and the inclined lane track have the same inclination angle, the first sliding shaft 22 and the second sliding shaft 23 of the intercepting device 2 Both are parallel to the inclined lane track, the first sliding shaft 22 and the second sliding shaft 23 on the same side are located on the outside of the inclined lane track, and the abutment block 2432 of the front wheel blocking block 24 passes through the bottom of the rear wheel blocking block 25 , the abutment block 2432 is not in contact with the rear wheel blocking block 25;

As shown in Figures 4-6, the distance from the blocking part 1 241 of the front wheel blocking block 24 to the surface facing the track of the abutting block 2432 of the front wheel blocking block 24 is not greater than the distance between the central axes of the front and rear wheels of the mine car The distance between the front wheel stop block 24 from the blocking part 1 241 of the front wheel stop block 24 to the surface of the rear wheel stop block 25 facing the block part 1 241 is not less than the diameter of the wheel of the mine car, and the blocking part 1 241 of the front wheel stop block 24 The distance to the surface of the rear wheel blocking block 25 facing away from the blocking part 1 is not greater than the distance between the blocking part 1 241 of the front wheel blocking block 24 and the abutting block 2432 of the front wheel blocking block 24. The length of the abutment block 2432 of the block 24 in the direction of the rail is not less than the length of the rear wheel blocking block 25 in the direction of the rail;

When the push rod controlling the electro-hydraulic push rod 28 pushes the sliding rod 29, the front wheel blocking block 24 rotates along the first sliding shaft 22 under the driving of the sliding rod 29, and when the front wheel blocking block 24 rotates directly above the rail , the connecting rod 2431 of the front wheel blocking block 24 is fitted with the rear wheel blocking block 25;

When the front wheel blocking block 24 slides in the descending direction of the rail, the inclined plane of the abutting block 2432 of the front wheel blocking block 24 pushes the rear wheel blocking block 25, thereby driving the rear wheel blocking block 25 to rotate along the second sliding shaft 23, When the surface of the abutment block 2432 of the front wheel choke block 24 facing the wheel is in contact with the rear wheel choke block 25 , the rear wheel choke block 25 is located directly above the rail.

Preferably, as an embodiment, the height of the blocking part 1 241 of the front wheel blocking block 24 is not less than the radius of the wheel of the mine truck, so that when the front wheel of the mine truck collides with the blocking part 1 241, the front wheel and the The interaction force of the blocking part 1 241 is 180 degrees, and the blocking part 1 241 has a better blocking effect on the mine cart.

Preferably, as an embodiment, the height of the second blocking portion 251 of the rear wheel blocking block 25 is not less than the radius of the wheel of the mine cart, so that when the rear wheel of the mining cart collides with the second blocking portion 251, the rear wheel and the The interaction force of the second blocking part 251 is 180 degrees, and the blocking effect of the second blocking part 251 on the minecart is better.

Preferably, as an embodiment, the distance between the sliding rod 29 and the first sliding shaft 22 is not greater than the length of the sliding groove 2422 of the front wheel blocking block 24, which can prevent the front wheel blocking block 24 from sliding When the sliding rod 29 is disengaged from the sliding groove 2422 of the front wheel blocking block 24, the positioning of the sliding rod 29 is lost when the front wheel blocking block 24 slides, resulting in the rotation of the front wheel blocking block 24 and the loss of the positioning of the sliding rod 29. The blocking effect of the front wheel of the car.

Preferably, as an embodiment, the elasticity of the first spring 26 is smaller than the elasticity of the second spring 27, so that the front wheel of the mine truck can generate a small rebound force when it hits the front wheel blocking block 24, preventing the The overturning accident of the minecart occurred due to the large rebound force of the front wheel of the minecart.

As shown in FIG. 9 , preferably, as an embodiment, the right end of the second blocking portion 251 of the rear wheel blocking block 25 facing the counterweight portion 253 is set to a rounded structure, which can better enable the rear wheel The wheel choke block 25 rotates along the second sliding shaft 23 under the inclined plane of the abutment block 2432 of the front wheel choke block 24 .

The working principle of the present invention:

When the mining cart has a sports car accident and passes through the centralized control box 1, the speed monitoring device detects that the speed of the mining cart is higher than the set value, the speed monitoring device sends a signal to the centralized control box 1, and the centralized control box 1 receives the speed monitoring After the signal sent by the device, the push rod of the control electro-hydraulic push rod 28 pushes the sliding rod 29, and the front wheel blocking block 24 rotates along the first sliding shaft 22 under the driving of the sliding rod 29. As shown in FIG. When the car block 24 rotates directly above the rail, the connecting rod 2431 of the front wheel car block 24 fits with the rear wheel car block 25, and the front wheel car block 24 moves along the first sliding axis under the impact of the front wheel of the mine car. 22. When the sliding rod 29 slides in the descending direction of the rail, the inclined plane of the abutment block 2432 of the front wheel blocking block 24 pushes the rear wheel blocking block 25, thereby driving the rear wheel blocking block 25 to rotate along the second sliding shaft 23, such as As shown in FIG. 8 , when the abutting block 2432 of the front wheel blocking block 24 is in contact with the rear wheel blocking block 25 , the rear wheel blocking block 25 is located above the rail, and the front wheel blocking block 24 continues along the The first sliding shaft 22 and the sliding rod 29 slide in the descending direction of the rail. At this time, the first spring 26 is compressed. Under the action of the rebound force of the first spring 26, the speed of the mine car is initially slowed down. The abutting block 2432 remains in contact with the rear wheel blocking block 25 and slides along the rear wheel blocking block 25 until the rear wheel of the mining cart abuts the rear wheel blocking block 25. At this time, the front and rear wheels of the mining cart are at the same time. The front wheel blocking block 24 and the rear wheel blocking block 25 slide along the descending direction of the rail, and the first spring 26 and the second spring 27 are compressed at the same time. The speed of the mine cart slows down again. When the first spring 26 and the second spring 27 are fully compressed, the front wheel stop blocks 24 and the rear wheel stop blocks 25 stop sliding, and the mine cart is on the front wheel stop blocks 24 and 25. Stop sliding under the blocking of the wheel blocking block 25;

When reset, the front wheel blocking block 24 and the rear wheel blocking block 25 are under the elastic force of the compressed first spring 26 and the second spring 27, and the front wheel blocking block 24 moves along the first sliding shaft 22 and the sliding rod 29. When the rail slides in the rising direction, the rear wheel blocking block 25 slides along the second sliding axis 23 in the rising direction of the rail. After the rear wheel blocking block 25 stops sliding, the front wheel blocking block 24 continues to slide. At this time, the rear wheel blocking block 25 Under the action of gravity of the counterweight part 253, it rotates to the outside of the rail. After the front wheel stop block 24 slides and stops, the rear wheel stop block 25 completely rotates to the outside of the rail. At this time, the push rod of the electro-hydraulic push rod 28 is operated to reset. , the push rod of the electro-hydraulic push rod 28 pulls the sliding rod 29, the front wheel blocking block 24 rotates along the first sliding shaft 22 to the outside of the rail under the driving of the sliding rod 29, and when the push rod of the electro-hydraulic push rod 28 stops pulling, The front wheel chocks 24 are fully rotated to the outside of the rail.

Claims (6)

1. The anti-sports car device includes: a centralized control box (1) and an intercepting device (2). The centralized control box (1) is located above the intercepting device (2) along the ascending direction of the inclined lane, and the centralized control box (1) is provided with a speed Monitoring device, the centralized control box (1) is electrically connected with the speed monitoring device; The intercepting device (2) comprises a support seat (21), a first sliding shaft (22), a second sliding shaft (23), a front wheel blocking block (24), a rear wheel blocking block ( 25), the first spring (26), the second spring (27), the electro-hydraulic push rod (28), the sliding rod (29), and the electro-hydraulic push rod (28) is electrically connected to the centralized control box (1); The above-mentioned support base (21) is fixedly installed below the inclined lane rail, the support base (21) is consistent with the inclined angle of the inclined lane track, and the first sliding shaft (22) and the second sliding shaft (23) are installed on the support base (21). ), the front wheel blocking block (24) is mounted on the first sliding shaft (22), the rear wheel blocking block (25) is mounted on the second sliding shaft (23), and the first spring (26) is sleeved on the first sliding shaft (23). On a sliding shaft (22), the second spring (27) is sleeved on the second sliding shaft (23), the electro-hydraulic push rod (28) is mounted on the support seat (21), and the electro-hydraulic push rod (28) is connected to the sliding shaft (23). The rod (29) is vertically connected, the front wheel blocking block (24) is connected with the sliding rod (29), and the front wheel blocking block (24) is driven by the sliding rod (29) to rotate along the first sliding shaft (22); It is characterized by: The second sliding shaft (23) of the intercepting device (2) is located above the first sliding shaft (22) along the ascending direction of the inclined lane; The front wheel blocking block (24) comprises: a rectangular blocking part (241), a pivoting part (242) connected below the front end of the blocking part (241), and a linking part (243), wherein the pivotal connection The first part (242) is provided with a shaft hole 1 (2421) running through its left and right sides. The shaft hole 1 (2421) is matched with the first sliding shaft (22). The sliding grooves (2422) on its left and right sides; The linking part (243) is composed of an "L"-shaped connecting rod (2431) and an abutting block (2432). It extends horizontally and is connected with the abutting block (2432), the cross-section of the abutting block (2432) is a right-angled trapezoid, and its surface facing the blocking part one (241) is an inclined surface; The rear wheel blocking block (25) comprises: a rectangular blocking part two (251), a pivoting part two (252) connected to the lower right side of the blocking part two (251), and a second blocking part (251) connected to the right The counterweight portion (253) on the upper side is composed of the counterweight portion (253) extending to the right to the right side of the second pivot portion (252). (2521), the second shaft hole (2521) is matched with the second sliding shaft (23), and the overall center of gravity of the rear wheel blocking block (25) is located on the right side of the second shaft hole (2521); The front wheel blocking block (24) drives the rear wheel blocking block (25) to rotate; The distance from the blocking part one (241) of the front wheel blocking block (24) to the front wheel blocking block (24) to the track-facing surface of the abutting block (2432) is not greater than the distance between the central axes of the front and rear wheels of the mine car. The distance between the first block (241) of the front wheel blocking block (24) and the surface of the rear wheel blocking block (25) facing the blocking part one (241) is not less than the diameter of the mine car wheel, the front wheel blocking The distance from the blocking part one (241) of the vehicle block (24) to the surface of the rear wheel blocking block (25) facing away from the blocking part one is not greater than the distance from the blocking part one (241) of the front wheel blocking block (24) to the front wheel The distance between the abutting blocks (2432) of the car blocking block (24), the length of the abutting block (2432) of the front wheel blocking block (24) along the rail is not less than the length of the rear wheel blocking block (25) along the rail the length of the direction. 2 . The anti-sports car device according to claim 1 , wherein the height of the blocking part one ( 241 ) of the front wheel blocking block ( 24 ) is not less than the radius of the wheel of the mine cart. 3 . 3 . The anti-sports car device according to claim 1 , wherein the height of the second blocking portion ( 251 ) of the rear wheel blocking block ( 25 ) is not less than the radius of the mine cart wheel. 4 . 4 . The anti-sports car device according to claim 1 , wherein the distance between the sliding rod ( 29 ) and the first sliding shaft ( 22 ) is not greater than the sliding groove ( 2422) length. 5 . The anti-sports car device according to claim 1 , wherein the elasticity of the first spring ( 26 ) is smaller than the elasticity of the second spring ( 27 ). 6 . 6 . The anti-sports car device according to claim 1 , characterized in that: the front right end of the second blocking portion ( 251 ) of the rear wheel blocking block ( 25 ) is provided with a rounded structure. 7 .

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