CN220220743U

CN220220743U - Auxiliary deceleration car stopping device for mine car

Info

Publication number: CN220220743U
Application number: CN202321458524.6U
Authority: CN
Inventors: 张钧祥; 冯国栋; 刘琦; 陈亮; 李鹏; 李志梁; 许红利
Original assignee: Zhongyuan University of Technology
Current assignee: Zhongyuan University of Technology
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-12-22
Anticipated expiration: 2033-06-09

Abstract

The utility model relates to an auxiliary deceleration stop device for mine car, including bearing the base, bear the post, speed measuring mechanism, elastic deceleration post and drive circuit, bear the cavity of base before the drive circuit, bear the base up end and bear the post and be connected, bear the post up end and be connected with a speed measuring mechanism, elastic deceleration post is at least three, each elastic deceleration post distributes and is 0 ~ 30 contained angle to get on the straight line direction with speed measuring mechanism axis, speed measuring mechanism and each elastic deceleration post all are connected with drive circuit electricity, elastic deceleration post includes guide post, brake post, the spring that advances again, electromagnetic drive mechanism, pressure sensor and binding post. The utility model can effectively satisfy the supporting needs that use of multiple colliery tunnel environment on the one hand, very big improvement equipment flexibility in use and commonality, on the other hand control accuracy is high, can effectively assist different grade type mine cars to assist the needs that slow down, block the location operation.

Description

Auxiliary deceleration car stopping device for mine car

Technical Field

The utility model relates to an auxiliary deceleration car stopping device for a mine car, and belongs to the technical field of mining mechanical equipment.

Background

In the running of the mine car, in order to improve the safety and reliability of the running of the mine car, a system braking system for assisting the running braking of the mine car is often needed to be additionally arranged besides a self-provided braking system of the mine car, for example, the prior art such as a car stopping roller device for a coal mine tunnel with the patent application number of 202022468435.2, a car stopping roller device for the coal mine tunnel with the patent application number of 201921991514.2 and the like, the currently used auxiliary braking equipment is often of a traditional mechanical blocking structure, and although the requirements of the braking and blocking of the mine car can be met, on the one hand, the current braking equipment always has rigid braking acting force on the mine car, so that the mine car structure is easily damaged due to overlarge instantaneous braking acting force, mine car bearing materials or personnel are easily damaged, the mine car is even derailed when serious accidents are caused, and the running maintenance cost of the mine car is increased; on the other hand, the current auxiliary braking equipment is in operation, and the braking acting force on the mine car is a fixed value, so that the braking acting force on the mine car cannot accurately assist the smooth braking of the mine car according to the running conditions of the mine car body structure, the mine car load state and the like, and the current auxiliary braking operation equipment for the mine car is greatly limited in use flexibility and universality.

Therefore, based on the defects in the prior art, the prior problems are researched and improved, and an auxiliary speed reduction car stopping device for a mine car is provided, so that the equipment aims to solve the existing equipment problems.

Disclosure of Invention

In order to solve the defects in the prior art, the auxiliary speed reduction car stopping device for the mine car is simple in structure and high in integration and modularization degree, on one hand, the auxiliary speed reduction car stopping device can effectively meet the requirements of supporting use in various coal mine tunnel environments, greatly improves the flexibility and universality of equipment, on the other hand, the control precision is high, and can effectively assist different types of mine cars to assist in speed reduction and stopping positioning operation, so that the safety of the mine car in running is effectively improved, and the risks of safety accidents such as collision and derailment caused by overspeed and untimely braking of the mine car are reduced.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

the utility model provides an auxiliary speed reduction stop device for mine car, including bearing the base, bear the post, speed measuring mechanism, elastic deceleration post and drive circuit, wherein bear the base and be closed cavity structure, and in the cavity of bearing the base before the drive circuit, bear the base and be connected with the ground plane and its up end and bear the post and be connected and vertically distribute, simultaneously bear the post axis and be distributed perpendicularly between the ground plane, bear the post up end and be connected with a speed measuring mechanism, and speed measuring mechanism axis is 0 ~ 15 contained angle with the ground plane, elastic deceleration post is at least three, each elastic deceleration post axis and the ground plane are vertically distributed, elastic deceleration post distributes in same and speed measuring mechanism axis and is 0 ~ 30 contained angle in the straight line direction, simultaneously interval between adjacent two elastic deceleration posts is 10-50 centimetres, speed measuring mechanism and each elastic deceleration post all are connected with drive circuit electricity, elastic deceleration post includes the guide post, brake post, the return spring, electromagnetic drive mechanism, pressure sensor and binding post, wherein establish at least one and its axis parallel distribution adjustment chamber in the guide post, the brake post lower half is inlayed in the adjustment chamber, coaxial distribution and sliding connection with the adjustment chamber, simultaneously with the terminal surface is located at least one down end face and is located down end face and is connected with the drive circuit, at least and is located down end face and is parallel to the drive circuit, and is connected with the drive circuit, and is located down end face and is connected with the electromagnetic sensor and is mutually parallel to the end face.

Further, the bearing column is of at least two-stage telescopic rod structure, the upper end face of the bearing column is hinged with the speed measuring mechanism through the turntable mechanism, and the bearing column rotates in a range of 0-360 degrees in the horizontal direction through the speed measuring mechanism of the turntable mechanism; the rotation is performed in the vertical direction in the angle range of 0 DEG to 90 deg.

Further, the auxiliary blocking rod is additionally arranged on the outer side surface of the bearing column and comprises a guide sleeve, a rotary driving mechanism, cross arms and elastic connecting belts, wherein the rear end surfaces of the cross arms are respectively coated outside the bearing column through the guide sleeve, the guide sleeve is connected with the bearing column through the rotary driving mechanism, the cross arms rotate in a range of 0-180 degrees around the bearing column through the guide sleeve and the rotary driving mechanism, the axes of the cross arms are vertically distributed with the axes of the bearing column, meanwhile, the cross arms are distributed from top to bottom along the axes of the bearing column, meanwhile, two adjacent cross arms are connected through a plurality of elastic connecting belts, the elastic connecting belts are distributed along the axes of the cross arms, the axes of the elastic connecting belts form included angles of 45-90 degrees with the cross arms, and in addition, the rotary driving mechanism is electrically connected with the driving circuit.

Further, the brake column comprises a metal column body, a high polymer column body, a stop block and an elastic hinge, wherein the metal column body and the high polymer column body are of a cylindrical structure, the lower end face of the metal column body is connected with the upper end face of the high polymer column body and is coaxially distributed, the outer side face of the high polymer column body is propped against the side wall of the adjusting cavity and is in sliding connection with the side wall of the adjusting cavity, the lower end face of the high polymer column body is connected with the recoil spring through a pressure sensor, an isolation gap with the width not smaller than 2 mm is arranged between the metal column body and the side wall of the adjusting cavity, the upper end face of the metal column body is located outside the guide column body, the upper end face of the metal column body is provided with a guide groove which is coaxially distributed and is in a U-shaped structure, the stop block is embedded in the guide groove and is hinged with the wall of the guide groove through the elastic hinge, the stop block rotates in a range of 0-120 degrees through the elastic hinge, meanwhile, the axis of the stop block is intersected with the axis of the metal column body in a horizontal plane, an included angle of 0-60 degrees, and the length of the stop block is not smaller than 3 times of the diameter of the metal column body.

Further, the axial section of the stop block is any one of a rectangle, an isosceles trapezoid, an isosceles triangle and a circular arc structure, the lower end surface of the stop block is of a plane structure, and the intersection point of the axis of the stop block and the axis of the metal cylinder is positioned in the stop block.

Further, the electromagnetic driving mechanism comprises electromagnets and a magnetic isolation material gasket, wherein the electromagnets are of annular structures which are coaxially distributed with the adjusting cavity, at least two electromagnets are distributed from top to bottom along the axis of the adjusting cavity, simultaneously, two adjacent electromagnets are connected with the guide post through the magnetic isolation material gasket, the magnetic isolation material gasket comprises a guide sleeve and a partition plate, the guide sleeve is of a cylindrical tubular structure which is coaxially distributed with the adjusting cavity, the partition plate is of an annular plate-shaped structure which is coaxially distributed with the adjusting cavity, at least one partition plate is embedded in the guide sleeve, connected with the inner side surface of the guide sleeve and coaxially distributed with the guide sleeve, the electromagnets are embedded in the guide sleeve and coaxially distributed with the guide sleeve, the partition plate is positioned between the two adjacent electromagnets, and the upper end surface and the lower end surface of the partition plate are both connected with one electromagnet.

Furthermore, the baffle and the guide sleeve adopt an integrated structure and any one of connecting structures between the baffle and the guide sleeve through a chute connecting structure.

Further, the speed measuring mechanism is any one of a laser speed measuring radar and a millimeter wave speed measuring radar; the driving circuit is a circuit system based on any one or two of a programmable controller and an FPGA chip.

The utility model has simple structure and high degree of integration and modularization, can effectively meet the requirements of supporting use in various coal mine tunnel environments, greatly improves the flexibility and universality of equipment use, has high control precision, and can effectively assist different types of mine cars to assist in speed reduction and blocking positioning operation, thereby effectively improving the safety of the mine cars in running and reducing the risks of safety accidents such as collision, derailment and the like caused by overspeed and untimely braking of the mine cars.

Drawings

The utility model is described in detail below with reference to the drawings and the detailed description;

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of an elastic deceleration column;

FIG. 3 is a schematic view of a partial structure of a brake column;

fig. 4 is a schematic view of a partial structure of the auxiliary barrier rod.

Detailed Description

In order to facilitate the construction of the technical means, the creation characteristics, the achievement of the purposes and the effects of the utility model, the utility model is further described below with reference to the specific embodiments.

As shown in figures 1-4, the auxiliary speed reduction car blocking device for the mine car comprises a bearing base 1, bearing columns 2, speed measuring mechanisms 3, elastic speed reduction columns 4 and a driving circuit 5, wherein the bearing base 1 is of a closed cavity structure, in a cavity of the bearing base 1 in front of the driving circuit 5, the bearing base 1 is connected with a ground plane, the upper end faces of the bearing bases are connected with the bearing columns 2 and vertically distributed, meanwhile, the axial ground planes of the bearing columns 2 are vertically distributed, the upper end faces of the bearing columns 2 are connected with one speed measuring mechanism 3, the axial lines of the speed measuring mechanisms 3 and the ground plane form an included angle of 0-15 degrees, at least three elastic speed reduction columns 4 are arranged, the axial lines of the elastic speed reduction columns 4 and the ground plane form an included angle of 0-30 degrees, the elastic speed reduction columns 4 are distributed in the same straight line direction with the axial lines of the speed measuring mechanisms 3, the distance between every two adjacent elastic speed reduction columns 4 is 10-50 cm, and the speed measuring mechanisms 3 and the elastic speed reduction columns 4 are electrically connected with the driving circuit 5.

In this embodiment, the elastic deceleration column 4 includes a guiding column 41, a braking column 42, a restoring spring 43, an electromagnetic driving mechanism 44, a pressure sensor 45 and a connection terminal 46, wherein at least one adjusting cavity 47 parallel to the axis of the guiding column 41 is disposed in the guiding column 41, the lower half of the braking column 42 is embedded in the adjusting cavity 47 and coaxially distributed and slidingly connected with the adjusting cavity 47, meanwhile, the lower end surface of the braking column 42 abuts against the bottom of the adjusting cavity 47 through the restoring spring 43, the upper end surface is located outside the guiding column 41, in addition, the lower end surface of the braking column 42 is connected with the restoring spring 43 through a pressure sensor 45, at least one electromagnetic driving mechanism 44 is embedded in the corresponding guiding column 41 on the side wall of the adjusting cavity 47 and uniformly distributed around the axis of the adjusting cavity 47, and the lower end surface of the electromagnetic driving mechanism 44 is located at least 5 cm above the lower end surface of the braking column 42, at least one connection terminal 46 is embedded on the lower outer surface of the guiding column 41 and electrically connected with the electromagnetic driving mechanism 44, the pressure sensor 45 and the driving circuit 5 respectively.

In the embodiment, the bearing column 2 is of at least two-stage telescopic rod structure, the upper end face of the bearing column is hinged with the speed measuring mechanism through the rotary table mechanism 6, and the speed measuring mechanism 3 rotates in the range of 0-360 degrees in the horizontal direction through the rotary table mechanism 6; the rotation is performed in the vertical direction in the angle range of 0 DEG to 90 deg.

It should be noted that, the auxiliary blocking rod is additionally provided on the outer side surface of the bearing column 2, the auxiliary blocking rod includes a guide sleeve 21, a rotation driving mechanism 22, a cross arm 23, and an elastic connection belt 24, wherein at least two cross arms 23 are respectively wrapped outside the bearing column 2 by the guide sleeve 21, the guide sleeve 21 is connected with the bearing column 2 by the rotation driving mechanism 22, the cross arm 23 rotates in a range of 0 ° to 180 ° around the bearing column 2 by the guide sleeve 21 and the rotation driving mechanism 22, the axis of the cross arm 23 is vertically distributed with the axis of the bearing column 2, each cross arm 23 is distributed from top to bottom along the axis of the bearing column 2, simultaneously, two adjacent cross arms 23 are connected by a plurality of elastic connection belts 24, the elastic connection belts 24 are distributed along the axis direction of the cross arm 23, the axes of the elastic connection belts 24 form an included angle of 45 ° to 90 ° with the cross arm 23, and the rotation driving mechanism 22 is electrically connected with the driving circuit 5.

When parking is assisted or emergency blocking is carried out, the cross arm is driven to rotate through the rotary driving mechanism, the cross arm is located above the vehicle running track and is vertically distributed with the vehicle running track, the cross arm is used for blocking a mine car body, elastic deformation capacity of the cross arm when the vehicle is blocked is improved by the elastic connecting belt in the blocking process, effective connection of the vehicle is met, and damage to a mine car structure caused by rigid blocking is avoided.

Further preferably, the rotary driving mechanism 22 is any one of an electric motor, a hydraulic motor and an air motor.

The key points are that the brake column 42 includes a metal column 421, a polymer column 422, a block 423, and an elastic hinge 424, where the metal column 421 and the polymer column 422 are both in a cylindrical structure, the lower end surface of the metal column 421 is connected with the upper end surface of the polymer column 422 and coaxially distributed, the outer side surface of the polymer column 422 is abutted against and slidingly connected with the side wall of the adjusting cavity 47, the lower end surface of the polymer column 422 is connected with the recoil spring 43 through a pressure sensor 45, an isolation gap with a width not less than 2 mm is provided between the metal column 421 and the side wall of the adjusting cavity 47, the upper end surface of the metal column 421 is located outside the guide column 41, the upper end surface of the metal column 421 is provided with a guide groove 425 coaxially distributed and in a "U" shape, the block 423 is embedded in the guide groove 425 and hinged with the guide groove 425 through the elastic hinge 424, and the block 423 rotates in a range of 0 ° to 120 ° through the elastic hinge, meanwhile, the axis of the block 423 intersects with the axis of the metal column 421, and the block 423 forms an included angle of 0 ° to 60 ° with the horizontal plane, and the length of the block 423 is not less than 3 times the diameter of the metal 423.

In order to improve the stability of the brake column moving along the adjusting cavity, the phenomenon of blocking during the up-and-down protection operation of the brake column caused by the offset is prevented, the high polymer column body directly offsets against the side wall of the adjusting cavity and is in sliding connection with the side wall of the adjusting cavity, meanwhile, the abrasion to the guide column is reduced through friction loss to the high polymer column body during operation, and the stability of the operation of equipment is improved.

Further preferably, at least three elastic pieces 426 uniformly distributed around the axis of the metal cylinder 421 are provided on the outer side surface of the metal cylinder 421, and are slidably connected with the side wall of the adjusting cavity 47 through the elastic pieces 426.

Through setting up sliding connection between shell fragment and the regulation chamber lateral wall, when satisfying the reciprocal operation from top to bottom of metal cylinder, can also effectually prevent that metal cylinder atress from taking place the skew and leading to equipment card dead or metal cylinder and direct wearing and tearing condition of guide post to take place.

The axial section of the block 423 is any one of a rectangular, isosceles trapezoid, isosceles triangle and circular arc structure, the lower end surface of the block 423 is a planar structure, and the intersection point of the axis of the block 423 and the axis of the metal cylinder 421 is located at the position in the block 423.

Meanwhile, the electromagnetic driving mechanism 44 includes electromagnets 441 and a magnetic isolation material gasket 442, wherein the electromagnets 441 are of an annular structure coaxially distributed with the adjusting cavity 47, at least two electromagnets 441 are distributed from top to bottom along the axis of the adjusting cavity 47, and simultaneously, two adjacent electromagnets 47 and the space between the electromagnets 47 and the guide post 41 are connected by the magnetic isolation material gasket 442, the magnetic isolation material gasket 442 includes a guide sleeve 4421 and a partition plate 4422, the guide sleeve 4421 is of a cylindrical tubular structure coaxially distributed with the adjusting cavity 47, the partition plate 4422 is of an annular plate structure coaxially distributed with the adjusting cavity 47, at least one partition plate 4422 is embedded in the guide sleeve 4421, is connected with the inner side surface of the guide sleeve 4421 and coaxially distributed with the guide sleeve 4221, the electromagnets 441 are embedded in the guide sleeve 4421 and coaxially distributed with the guide sleeve 4421, the partition plate 4422 is positioned between the two adjacent electromagnets 4422, and the upper end surface and the lower end surface of the partition plate 4422 are both connected with one electromagnet 441.

Further preferably, the partition 4422 and the guide sleeve 4421 adopt an integral structure and any one of connection structures between the partition 4422 and the guide sleeve 4421 through a chute.

In this embodiment, the speed measuring mechanism 3 is any one of a laser speed measuring radar and a millimeter wave speed measuring radar; the driving circuit 5 is a circuit system based on any one or two of a programmable controller and an FPGA chip.

In the implementation, firstly, according to the mine car running track distribution structure, then along the track distribution direction, a plurality of elastic deceleration columns are arranged at any side positions on the outer side and the inner side of the track, the axes of the elastic deceleration columns and the axes of the track form an included angle of 30-90 degrees, each elastic deceleration column is uniformly distributed along the track distribution direction, then the upper end face of each elastic deceleration column is higher than the upper end face of the track by at least 3 cm under the standby state, then a bearing base, a bearing column and a speed measuring mechanism connected with the bearing base are arranged at the outer side of the track, the axes of the speed measuring mechanism are intersected with the axes of the track and form an included angle of 10-30 degrees, the intersection point is located at least 50 cm outside the elastic deceleration column at the farthest end of the speed measuring mechanism, and finally, a driving circuit and an external control circuit are electrically connected, so that equipment can be assembled.

When the device runs, the speed measuring mechanism and each elastic deceleration column are in a standby state, and when the elastic deceleration column is in the standby state, the upper end surface of a stop block of the elastic deceleration column and a main rail line are in a tangential state, and the inclined direction points to the coming direction of the mine car;

when the speed measuring mechanism detects that a mine car passes through the track, the speed of the mine car is continuously detected, meanwhile, when the mine car passes through a first elastic deceleration column along the track, the mine car firstly collides with the front end face of the baffle block in an inclined state, in the collision process, the baffle block rotates to be parallel to the axis of the track, and the impact force of the mine car is utilized to drive the brake column to move downwards along the adjusting cavity, so that the vehicle is blocked by the current elastic deceleration column, and meanwhile, when the vehicle is blocked by the current elastic deceleration column, the kinetic energy of the mine car is transferred and counteracted in the process of overcoming the elastic descending of the return spring by the baffle block and the brake column, so that the aim of decelerating the vehicle is fulfilled;

when the vehicle passes through the first elastic deceleration column, the speed measuring mechanism detects the speed change of the mine car, meanwhile, the pressure sensor detects the pressure of the brake column of the elastic deceleration column when the current vehicle passes through, then the electromagnetic driving mechanisms of the rest elastic deceleration columns are sequentially driven to operate, electromagnetic force of the electromagnetic driving mechanisms is increased step by step, magnetic positioning capability of the electromagnetic driving mechanisms on the metal column of the brake column is improved, when the vehicle sequentially passes through the following elastic deceleration columns, the mine car overcomes the overturning of the stop block, the brake column overcomes the elastic force of the restoring spring to decelerate, and meanwhile, the positioning acting force applied to the brake column by the progressive electromagnetic driving mechanisms is further overcome step by step, so that the resistance of the mine car received by the elastic deceleration columns along the track is increased step by step, and finally the aim of assisting deceleration or blocking is achieved.

In the process of stopping the operation of the mine car by the auxiliary speed reducer, the actual number of the elastic speed reducer columns, the distance between two adjacent elastic speed reducer columns and the electromagnetic field strength of the electromagnetic driving mechanism when each elastic speed reducer column operates are adjusted, so that the braking acting force for braking the mine car is flexibly adjusted, and the auxiliary parking positioning control precision of the mine car braking speed reducer can be realized while the matched operation of mine cars in different loading states is met.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An auxiliary deceleration stop device for a mine car is characterized in that: the auxiliary speed reduction car stopping device for the mine car comprises a bearing base, bearing columns, speed measuring mechanisms, elastic speed reduction columns and a driving circuit, wherein the bearing base is of a closed cavity structure, the bearing base is connected with a ground plane in a cavity of the bearing base in front of the driving circuit, the upper end faces of the bearing base are connected with the bearing columns and are vertically distributed, meanwhile, the bearing column axes are vertically distributed among the ground planes, the upper end faces of the bearing columns are connected with one speed measuring mechanism, the axes of the speed measuring mechanism and the ground plane form an included angle of 0-15 degrees, at least three elastic speed reduction columns are vertically distributed with the ground plane, the elastic speed reduction columns are distributed in the same direction with the axes of the speed measuring mechanism in a linear direction of 0-30 degrees, the distance between every two adjacent elastic speed reduction columns is 10-50 cm, the speed measuring mechanism and each elastic speed reduction column are electrically connected with the driving circuit, each elastic speed reduction column comprises a guide column, a brake column, a restoring spring, an electromagnetic driving mechanism, a pressure sensor and a wiring terminal, at least one regulating cavity is distributed in parallel to the axes of the guide column, the brake column is embedded in the regulating cavity, the lower half part of the brake column is coaxial with the ground plane, and is in a position of the regulating cavity, and is in a position corresponding to the regulating cavity, and is in sliding connection with the upper end face of the regulating cavity, and is in the at least one side of the regulating cavity, and is in the opposite to the regulating cavity, and is in the position with the regulating cavity, and at least one side of the upper end face of the electromagnetic driving cavity The pressure sensor and the driving circuit are electrically connected.

2. An auxiliary speed reducing and stopping device for a mine car according to claim 1, wherein: the bearing column is of at least two-stage telescopic rod structure, the upper end face of the bearing column is hinged with the speed measuring mechanism through the rotary table mechanism, and the bearing column rotates in the range of 0-360 degrees in the horizontal direction through the speed measuring mechanism of the rotary table mechanism; the rotation is performed in the vertical direction in the angle range of 0 DEG to 90 deg.

3. An auxiliary speed bump stop for a mine car according to claim 1 or 2, wherein: the auxiliary blocking rod comprises a guide sleeve, a rotary driving mechanism, cross arms and elastic connecting belts, wherein the rear end faces of the cross arms are respectively coated outside the bearing column through the guide sleeve, the guide sleeve is connected with the bearing column through the rotary driving mechanism, the cross arms rotate in a range of 0-180 degrees around the bearing column through the guide sleeve and the rotary driving mechanism, the cross arm axes are vertically distributed with the bearing column axes, the cross arms are distributed from top to bottom along the bearing column axes, the adjacent two cross arms are connected through the elastic connecting belts, the elastic connecting belts are distributed along the cross arm axes, the axes of the elastic connecting belts form included angles of 45-90 degrees with the cross arms, and in addition, the rotary driving mechanism is electrically connected with the driving circuit.

4. An auxiliary speed reducing and stopping device for a mine car according to claim 1, wherein: the brake column comprises a metal column body, a high polymer column body, a stop block and an elastic hinge, wherein the metal column body and the high polymer column body are of cylindrical structures, the lower end face of the metal column body is connected with the upper end face of the high polymer column body and is coaxially distributed, the outer side face of the high polymer column body is propped against the side wall of the adjusting cavity and is in sliding connection with the side wall of the adjusting cavity, the lower end face of the high polymer column body is connected with a return spring through a pressure sensor, an isolation gap with the width not smaller than 2 mm is arranged between the metal column body and the side wall of the adjusting cavity, the upper end face of the metal column body is located outside the guide column, the upper end face of the metal column body is provided with a guide groove which is coaxially distributed and is in a U-shaped structure, the stop block is embedded in the guide groove and is hinged with the groove wall of the guide groove through the elastic hinge, the stop block rotates in a range of 0-120 degrees through the elastic hinge, meanwhile the axis of the stop block is intersected with the axis of the metal column body, the stop block axis forms an included angle of 0-60 degrees with the horizontal plane, and the length of the stop block is not smaller than 3 times of the diameter of the metal column body.

5. An auxiliary speed bump stop for a mine car according to claim 4, wherein: the axial section of the stop block is any one of a rectangle, an isosceles trapezoid, an isosceles triangle and a circular arc structure, the lower end surface of the stop block is of a plane structure, and the intersection point of the axis of the stop block and the axis of the metal cylinder is positioned in the stop block.

6. An auxiliary speed reducing and stopping device for a mine car according to claim 1, wherein: the electromagnetic driving mechanism comprises electromagnets and magnetism isolating material washers, wherein the electromagnets are of annular structures which are coaxially distributed with the adjusting cavity, at least two electromagnets are distributed from top to bottom along the axis of the adjusting cavity, simultaneously, two adjacent electromagnets are connected with the guide post through the magnetism isolating material washers, each magnetism isolating material washer comprises a guide sleeve and a partition plate, the guide sleeve is of a cylindrical tubular structure which is coaxially distributed with the adjusting cavity, the partition plate is of an annular plate-shaped structure which is coaxially distributed with the adjusting cavity, at least one partition plate is embedded in the guide sleeve and is connected with the inner side surface of the guide sleeve and is coaxially distributed with the guide sleeve, the electromagnets are embedded in the guide sleeve and are coaxially distributed with the guide sleeve, the partition plate is positioned between two adjacent electromagnets, and the upper end surface and the lower end surface of the partition plate are both connected with one electromagnet.

7. An auxiliary speed bump stop for a mine car according to claim 6, wherein: the baffle and the guide sleeve adopt an integrated structure and any one of connecting structures between the baffle and the guide sleeve through a chute.

8. An auxiliary speed reducing and stopping device for a mine car according to claim 1, wherein: the speed measuring mechanism is any one of a laser speed measuring radar and a millimeter wave speed measuring radar; the driving circuit is a circuit system based on any one or two of a programmable controller and an FPGA chip.