Vehicle-mounted speed measuring and monitoring car stopping device for mine car

Abstract

The utility model discloses a vehicle-mounted speed measuring and monitoring car stopping device for a mine car. Supporting plates are arranged on the bottom faces of the two ends of the mine car bottom plate, wheel shafts are rotationally installed on the supporting plates, wheel hubs are installed on the wheel shafts, and a brake speed reduction mechanism is arranged on the bottom face of the mine car bottom plate and comprises a hook-shaped brake claw, a middle base, a stop pin, a first reset spring and a release assembly. The two brake claws are oppositely arranged and rotationally connected with the middle base, a plurality of positioning clamping grooves are formed in the outer side faces of rod parts of the brake claws and matched with stop pins, the stop pins are located on the two sides of the middle base and rotationally connected with the bottom of a mine car, and first reset springs are arranged between the stop pins and the middle base; the mine car bottom plate is provided with a speed measuring assembly and a monitoring assembly. The braking speed reducing mechanism is of an active triggering type, when the speed measuring assembly detects that the tramcar is overspeed, the braking claw can be started to hold the rail to stop the tramcar at the initial stage, emergency braking of the tramcar is achieved, and losses caused by tramcar running accidents are effectively avoided.

Description

Technical Field

[0001] The utility model relates to underground equipment in a coal mine, in particular to a vehicle-mounted speed measuring and monitoring vehicle-blocking device for a mine vehicle. Background Art

[0002] Coal has been mined for a long time as an important resource, but most of the coal resources are buried deep underground. During the mining process, most of them need to be transported in the underground inclined tunnels. Therefore, safe transportation in the coal mine is also an important part of coal mine safety production. In the lifting of the inclined shafts and tunnels of coal mines, in order to avoid and reduce the losses caused by runaway accidents in the inclined shafts and tunnels, the traditional method is to set up anti-runaway devices in the inclined tunnels. However, most of the anti-runaway devices are fixed-point blocking devices, that is, the device is pre-opened at a fixed location to set up a blocking device or a blocking device is set up at a fixed location after the runaway car is found. This type of blocking device cannot predict the loss of control of the mine car. Therefore, after forcibly blocking the high-speed out-of-control mine car, the mine car, track, car blocker and tunnel will be damaged to varying degrees, and the runaway car cannot be safely parked in a safe way. Although this device can reduce the losses of accidents, it itself has many defects. There are many problems in actual use, mainly manifested as: misoperation and refusal to operate; the car blocker is not flexible; and the protection performance is poor. The above problems seriously affect the production of the mine, directly endanger the personal safety of miners, and cause major accidents in the coal mine. The Chinese utility model with the authorization announcement number CN201124843Y discloses a mechanical mine car automatic anti-runaway device, which has poor braking performance. Utility Model Content

[0003] The utility model aims to solve the above technical problems, thereby providing a vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle, which can effectively avoid the losses caused by vehicle runaway accidents.

[0004] The utility model solves the technical problem and adopts the following technical solution:

[0005] A vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine car, wherein the bottom surfaces of both ends of the mine car bottom plate are provided with support plates, the support plates are rotatably mounted with axles, and the axles are mounted with wheel hubs.

[0006] A braking and deceleration mechanism is provided on the bottom surface of the mine car bottom plate, and the braking and deceleration mechanism includes a hook-shaped braking claw, an intermediate seat, a stop pin, a first return spring and a release assembly. The intermediate seat is fixed to the mine car bottom plate, and the two braking claws are arranged opposite to each other and are rotatably connected to the intermediate seat respectively. A plurality of positioning grooves are provided on the outer side surface of the rod portion of the braking claw, and the positioning grooves cooperate with the stop pin. The stop pin is located on both sides of the intermediate seat and is rotatably connected to the bottom of the mine car, and a first return spring is provided between the stop pin and the intermediate seat; a speed measuring assembly and a monitoring assembly are provided on the mine car bottom plate.

[0007] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0008] 1) The braking and deceleration mechanism is a mechanical structure, which is safe, reliable and has a long service life;

[0009] 2) The braking and deceleration mechanism is an active trigger type. When the speed measuring component detects that the mine car is speeding, it can activate the braking claw to hold the track and stop the car in the initial stage of the mine car running away, and implement emergency braking on the mine car, effectively avoiding the losses caused by running away accidents.

[0010] 3) The monitoring component observes the running status of the mine car and can respond promptly when a runaway car occurs, thus minimizing the loss of the runaway car.

[0011] Further, the optimization scheme of the utility model is:

[0012] The release assembly includes an electric push rod, a push rod base, a front base, a rear base, a connecting rod, a pin and a flexible connecting piece. The electric push rod is longitudinally installed at the front end of the bottom plate of the mine car through the push rod base. The front base and the rear base are both U-shaped. The two front bases are respectively located on both sides in front of the middle seat, and the two rear bases are respectively located on both sides behind the middle seat. Horizontal connecting rods are slidably connected between the two front bases and between the two rear bases. The electric push rod is connected to the connecting rod in the front base, and the connecting rod in the front base is connected to one end of the flexible connecting piece. The other end of the flexible connecting piece is connected to the connecting rod in the rear base after bypassing the fixed pulley at the rear end of the rear base. The rod portion of the braking claw is fixedly connected to the inverted L-shaped pin. When the braking claw is in an open state, the horizontal portion of the pin is placed on the connecting rod.

[0013] A second return spring is arranged between the connecting rod in the rear base and the vertical portion outside the rear base.

[0014] The flexible connecting piece is a steel wire rope.

[0015] When the electric push rod of the release assembly drives the two connecting rods to move away, the push pin falls off the connecting rod, the hooks of the two brake claws are hooked on both sides of the sleeper respectively, and the lower end of the stop pin is inserted into the positioning groove of the rod part of the brake claw.

[0016] The stop pin is arc-shaped, and the upper end of the stop pin is hinged with the ear seat through a pin shaft. The ear seats are arranged on both sides of the middle seat and are fixedly connected with the bottom plate of the mine car.

[0017] The two braking claws are in an M shape when in an open state.

[0018] The speed measuring assembly comprises a Hall sensor and a magnet. A plurality of magnets are mounted on the wheel hub, and a Hall sensor corresponding to the magnet is disposed on the support plate.

[0019] The monitoring component is placed on the upper part of one end of the mine car bottom plate. The monitoring component includes a wireless camera, a power box, a support rod and a monitoring base. The support rod is vertically installed on the mine car bottom plate, the monitoring base is placed on the upper end of the support rod, and the wireless camera and the power box are installed on the monitoring base.

[0020] The electric push rods of the speed measuring component, the monitoring component and the releasing component are all electrically connected to the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the brake claw holding the rail and blocking the vehicle in the embodiment of the utility model;

[0023] Figure 3 is a schematic diagram of the brake claw;

[0024] Figure 4 Schematic diagram of the stop pin.

[0025] In the figure: mine car 1; mine car bottom plate 101; support plate 102; wheel axle 103; wheel hub 104; middle seat 2; axle pin 3; brake claw 4; stop pin 5; pin shaft 501; ear seat 502; first return spring 6; electric push rod 7; push rod base 8; front base 9; rear base 10; connecting rod 11; push pin 12; flexible connector 13; Hall sensor 14; four magnets 15; wireless camera 16; power box 17; support rod 18; monitoring base 19. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1-Figure 4 This embodiment provides a vehicle-mounted speed measurement and monitoring device for a mine car, which is mainly composed of a mine car 1, a braking and deceleration mechanism, a speed measurement component and a monitoring component. The mine car 1 is mainly composed of a mine car bottom plate 101, a support plate 102, a wheel axle 103 and a wheel hub 104. Two support plates 102 are respectively installed at both ends of the bottom surface of the mine car bottom plate 101. The lower end of the support plate 102 is rotatably installed with a wheel axle 103, and the two ends of the wheel axle 103 are respectively installed with wheel hubs 104.

[0028] The bottom surface of the mine car bottom plate 101 is provided with a brake deceleration mechanism, which is mainly composed of an intermediate seat 2, an axle pin 3, a brake claw 4, a stop pin 5 and a first return spring 6. The intermediate seat 2 is welded to the middle of the bottom surface of the mine car bottom plate 101, and there are two brake claws 4 arranged symmetrically. The brake claw 4 is hook-shaped, which is composed of a rod and a hook. The upper end of the rod is hinged to the upper end of the intermediate seat 2 through the axle pin 3, and the outer side of the rod is provided with a plurality of positioning slots 401, which are arranged obliquely. The positioning slots 401 cooperate with the stop pin 5, and the stop pin 5 is arc-shaped. The upper end of the stop pin 5 is hinged to the ear seat 502 through the pin shaft 501. The two ear seats 502 are respectively located on the front and rear sides of the intermediate seat 2. The ear seat 502 is welded to the mine car bottom plate 101. A first return spring 6 is installed between the inner side of the stop pin 5 and the intermediate seat 2, and the first return spring 6 is a tension spring. When the brake claw 4 is released and falls off, the stop pin 5 rotates inward under the action of the first return spring 6, and the lower end of the stop pin 5 is inserted into the positioning slot 401 of the brake claw 4 to position and limit the brake claw 4 ( Figure 2 shown).

[0029] The brake claw 4 is released by the release assembly, which is mainly composed of an electric push rod 7, a push rod base 8, a front base 9, a rear base 10, a connecting rod 11, a pin 12 and a flexible connector 13. The electric push rod 7 is arranged longitudinally and connected to the bottom plate 101 of the mine car through the push rod base 8. The push rod base 8 is located at both ends of the cylinder of the electric push rod 7, and the electric push rod 7 is located on the longitudinal center line of the bottom plate 101 of the mine car. The front base 9 and the rear base 10 are both U-shaped, and the two front bases 9 are respectively located on both sides in front of the middle seat 2, and the two rear bases 10 are respectively located on both sides behind the middle seat 2. The front base 9 and the rear base 10 are symmetrically arranged and respectively welded to the bottom plate 101 of the mine car. A transverse connecting rod 11 is respectively arranged between the two front bases 9 and between the two rear bases 10, and the two connecting rods 11 are respectively slidably connected to the horizontal parts of the front base 9 and the rear base 10. The electric push rod 7 is connected to the connecting rod 11 in the front base 10, and the connecting rod 11 in the front base 10 is connected to one end of the flexible connector 13. The other end of the flexible connector 12 is connected to the connecting rod 11 in the rear base 10 after passing through a fixed pulley (not shown in the figure). The fixed pulley is rotatably installed between the outer vertical parts of the two rear bases 10. The flexible connector 13 adopts a wire rope and can also adopt a ring chain. A second return spring (not shown in the figure) is provided between the connecting rod 11 in the rear base 10 and the vertical part outside the rear base 10. The second return spring is a compression spring, and a tension spring can also be installed between the outer end of the connecting rod 11 and the inner vertical part of the rear base 10.

[0030] The rods of the two brake claws 4 are respectively welded with a pin 12, which is an inverted L shape. The two brake claws 4 are in an M shape when they are opened, and the outer end of the horizontal part of the pin 12 is placed on the connecting rod 11. When the telescopic rod of the electric push rod 7 is retracted, the connecting rod 11 in the front base 9 is away from the middle seat 2, the connecting rod 11 pulls the flexible connector 13, the flexible connector 13 pulls the connecting rod 11 in the rear base 10, and the connecting rod 11 in the rear base 10 compresses the second return spring, the two connecting rods 11 are away, the pin 12 falls off from the connecting rod 11, the brake claw 4 falls to both sides of the sleeper 20, thereby hooking the sleeper 20, the stop pin 5 rotates inwardly under the action of the first return spring 6, and the lower end of the stop pin 5 is inserted into the positioning slot 401 of the brake claw 4, the brake claw 4 is positioned and limited, and the brake claw 4 is firmly positioned. When the telescopic rod of the electric push rod 7 is extended, the connecting rod 11 in the front base 9 moves toward the middle base 2, the flexible connector 13 is relaxed, and the connecting rod 11 in the rear base 10 moves toward the middle base 2 under the action of the second return spring, and the two connecting rods 11 are close to each other. After the brake claw 4 is opened, the pin 12 is placed on the connecting rod 11 to keep the brake claw 4 in the open state.

[0031] The mine car 1 is provided with a speed measuring component, which is mainly composed of a Hall sensor 14 and four magnets 15. The four magnets 15 are mounted on the wheel hub 104 and are evenly arranged. A Hall sensor 14 corresponding to the magnet 14 is provided on the support plate 102. The Hall sensor 14 is electrically connected to the control system. The speed measuring component monitors the speed of the mine car 1 in real time.

[0032] The mine car 1 is provided with a monitoring component, which is located at the upper part of the front end of the mine car bottom plate 101. The monitoring component is mainly composed of a wireless camera 16, a power box 17, a support rod 18 and a monitoring base 19. The support rod 18 is vertically installed on the mine car bottom plate 101, and the monitoring base 19 is installed on the upper end of the support rod 18. The wireless camera 16 and the power box 14 are installed on the monitoring base 19, and the wireless camera 16 is powered by the power box 14. The electric push rod 7, the Hall sensor 14 and the wireless camera 16 are all electrically connected to the control system. The wireless camera 16 is a mine intrinsically safe wireless camera, and the power box 17 is a mine intrinsically safe power box.

[0033] When the mine car 1 runs away, the installed Hall speed sensor 14 uses the rotation speed of the wheel hub 104 of the mine car 1 as a trigger signal, and by measuring the change in the potential difference, the speed of the mine car 1 can be determined (the mine car overspeed is set to be more than 2m / s), that is, the mine car runs away. The control system controls the electric push rod 7 to perform telescopic action, and drives the connecting rod 11 to move through the wire rope, so that the limit pin 12 overlapped with it loses the limit control function, and the brake claw 4 is inserted into the rail sleeper 20 or the bottom plate under the action of its own weight to prevent the mine car 1 from sliding down. At the same time, the stop pin 5 is inserted into the positioning card slot 401 on the back of the brake claw 4 under the action of the first reset spring 6 to limit it, thereby achieving emergency braking. In order to ensure that the anti-runaway device works in both forward and reverse conditions, a set of the above-mentioned brake and deceleration mechanism is installed on both the forward and reverse sides of the mine car 1. In this way, when the mine car 1 is running in an inclined shaft, there is a set of brake and deceleration mechanism working in either direction, and when the mine car 1 is running in a flat lane, both sets of brake and deceleration mechanisms do not work. In addition, the operator can observe the running status of the mine car 1 through the monitoring component on the mine car 1, and can respond in time when a runaway occurs, thereby reducing the loss of the runaway to a minimum. The utility model is a mechanical structure, which has the characteristics of real-time monitoring, simple structure, accurate signal acquisition, timely action, safety and reliability, and can effectively avoid the loss caused by the runaway accident.

[0034] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent structural changes made using the contents of the present invention description and drawings are included in the scope of rights of the present invention.

Claims

1. A vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine car, wherein the bottom surfaces of both ends of the bottom plate of the mine car are provided with support plates, the support plates are rotatably mounted with axles, and the axles are mounted with wheel hubs, and the characteristics are: A braking and deceleration mechanism is provided on the bottom surface of the mine car bottom plate, and the braking and deceleration mechanism includes a hook-shaped braking claw, an intermediate seat, a stop pin, a first return spring and a release assembly. The intermediate seat is fixed to the mine car bottom plate, and the two braking claws are arranged opposite to each other and are rotatably connected to the intermediate seat respectively. A plurality of positioning grooves are provided on the outer side surface of the rod portion of the braking claw, and the positioning grooves cooperate with the stop pin. The stop pin is located on both sides of the intermediate seat and is rotatably connected to the bottom of the mine car, and a first return spring is provided between the stop pin and the intermediate seat; a speed measuring assembly and a monitoring assembly are provided on the mine car bottom plate.

2. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 1 is characterized in that: The release assembly includes an electric push rod, a push rod base, a front base, a rear base, a connecting rod, a pin and a flexible connecting piece. The electric push rod is longitudinally installed at the front end of the bottom plate of the mine car through the push rod base. The front base and the rear base are both U-shaped. The two front bases are respectively located on both sides in front of the middle seat, and the two rear bases are respectively located on both sides behind the middle seat. Horizontal connecting rods are slidably connected between the two front bases and between the two rear bases. The electric push rod is connected to the connecting rod in the front base, and the connecting rod in the front base is connected to one end of the flexible connecting piece. The other end of the flexible connecting piece is connected to the connecting rod in the rear base after bypassing the fixed pulley at the rear end of the rear base. The rod portion of the braking claw is fixedly connected to the inverted L-shaped pin. When the braking claw is in an open state, the horizontal portion of the pin is placed on the connecting rod.

3. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 2 is characterized in that: A second return spring is arranged between the connecting rod in the rear base and the vertical portion outside the rear base.

4. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 2 is characterized in that: The flexible connecting piece is a steel wire rope.

5. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 2 is characterized in that: When the electric push rod of the release assembly drives the two connecting rods to move away, the push pin falls off the connecting rod, the hooks of the two brake claws are hooked on both sides of the sleeper respectively, and the lower end of the stop pin is inserted into the positioning groove of the rod part of the brake claw.

6. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 1 is characterized in that: The stop pin is arc-shaped, and the upper end of the stop pin is hinged with the ear seat through a pin shaft. The ear seats are arranged on both sides of the middle seat and are fixedly connected with the bottom plate of the mine car.

7. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 1 is characterized in that: The two braking claws are in an M shape when in an open state.

8. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 1 is characterized in that: The speed measuring component includes a Hall sensor and a magnet. A plurality of magnets are mounted on the wheel hub, and a Hall sensor corresponding to the magnet is disposed on the support plate.

9. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 1 is characterized in that: The monitoring component is placed on the upper part of one end of the mine car bottom plate. The monitoring component includes a wireless camera, a power box, a support rod and a monitoring base. The support rod is vertically installed on the mine car bottom plate, the monitoring base is placed on the upper end of the support rod, and the wireless camera and the power box are installed on the monitoring base.

10. The vehicle-mounted speed measuring and monitoring vehicle blocking device for a mine vehicle according to claim 1, characterized in that: The electric push rods of the speed measuring component, the monitoring component and the releasing component are all electrically connected to the control system.

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