Underground mine car braking device

Abstract

The utility model discloses an underground tramcar braking device, which belongs to the technical field of underground tramcars and comprises a tramcar body, two driving shafts are arranged at the bottom of the tramcar body, rail wheels are fixedly sleeved at two ends of the two driving shafts respectively, and brake discs are fixedly sleeved on the two driving shafts respectively. U-shaped supports are fixedly connected to the two sides of the mine car body correspondingly, and water spraying mechanisms are arranged on the two U-shaped supports correspondingly. Along with continuous use of the arc-shaped brake block and the brake plate, abrasion can be generated, meanwhile, the outward moving distance of the sliding seat is gradually increased, when the arc-shaped brake block and the brake plate need to be replaced, the contact sensor is in contact with the sliding seat at the moment, and it is indicated that the arc-shaped brake block and the brake plate are consumed up; and at the moment, the controller is used for controlling the loudspeaker to give out a warning tone, so that a worker can replace the arc-shaped brake block and the brake plate in time.

Description

Technical Field

[0001] This utility model relates to the field of underground mining car technology, and more specifically, to an underground mining car braking device. Background Technology

[0002] Mining cars are narrow-gauge railway vehicles used in mines to transport bulk materials such as coal, ore, and waste rock. They are generally pulled by locomotives or winches. To ensure the safety of underground mining cars, specialized underground mining car braking devices are required.

[0003] A search revealed that utility model patent CN221605808U discloses a braking device for an underground mine car, comprising a mine car and a braking mechanism disposed at the lower end of the mine car. The braking mechanism includes a fixed block symmetrically disposed laterally in the middle of the lower surface of the mine car, with a sliding plate slidably connected to a sliding opening in the middle of the fixed block. Braking plates are provided on the outer sides of the sliding plates. A driving assembly for moving the sliding plates is also provided at the lower end of the mine car. The patent, through its braking mechanism, increases the coefficient of friction with the track, preventing the mine car from sliding on the track due to its own inertia and the relatively low coefficient of friction between the wheels and the track after braking. This shortens the sliding distance of the mine car after braking, allowing it to complete the braking action in a shorter time. However, the above-mentioned patents still have the following shortcomings: when the arc-shaped brake block and brake plate need to be replaced, it is not convenient to notify the staff in a timely manner; and when the arc-shaped brake block brakes the brake disc and the brake plate brakes the track, friction and heat will be generated, which will affect the service life of the arc-shaped brake block and brake plate. Therefore, we have proposed an underground mine car braking device. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a braking device for underground mining cars.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A braking device for an underground mining car includes a mining car body. Two drive shafts are located at the bottom of the mining car body. Track wheels are fixedly sleeved at both ends of the two drive shafts. Brake discs are fixedly sleeved on each of the two drive shafts. U-shaped brackets are fixedly connected to both sides of the mining car body. Water spraying mechanisms are installed on each of the two U-shaped brackets. First braking mechanisms are installed on both sides of each U-shaped bracket. L-shaped mounting plates are fixedly connected to the outer sides of each of the two U-shaped brackets. Contact sensors are fixedly installed on the inner sides of each of the two L-shaped mounting plates. A controller and a speaker are fixedly installed on the outer side of one L-shaped mounting plate. A mounting base is fixedly connected to the bottom of the mining car body. A bidirectional hydraulic cylinder is fixedly mounted on the mounting base. Slides are fixedly connected to both ends of the bidirectional hydraulic cylinder. First inclined surfaces are provided on both sides of the ends of the two slides. A second braking mechanism is provided at the bottom of each slide.

[0007] As a preferred embodiment of this utility model, the water spraying mechanism includes a water tank fixedly connected to the top surface of a U-shaped bracket, a water pump fixedly installed on the top surface of the water tank, an input end of the water pump extending into the inner cavity of the water tank and fixedly connected to a water suction pipe, an output end of the water pump fixedly connected to a four-way connector, and three output ends of the four-way connector respectively fixedly sleeved with water guide steel pipes, two of the ends of the water guide steel pipes extending to the top of the brake disc and fixedly connected to nozzles, and the end of the other water guide steel pipe fixedly connected to a spray pipe, the bottom surface of which has a water spray groove.

[0008] As a preferred embodiment of the present invention, the first braking mechanism includes a spring fixedly connected to the side of the U-shaped bracket, a first mounting seat fixedly connected to the end of the spring, an arc-shaped braking block mounted on the first mounting seat, a square sliding rod fixedly connected to the first mounting seat, and the other end of the square sliding rod movably sleeved to the inner side of the U-shaped bracket and provided with a second inclined surface, the side of the second inclined surface and the side of the first inclined surface being in contact with each other.

[0009] As a preferred embodiment of the present invention, the second braking mechanism includes a connecting rod fixedly connected to the bottom surface of the slide block, a second mounting base fixedly connected to the bottom end of the connecting rod, a brake plate mounted on the second mounting base, and the nozzle located above the brake plate.

[0010] In a preferred embodiment of this utility model, the inner diameter of the arc-shaped braking block is equal to the outer diameter of the brake disc.

[0011] As a preferred embodiment of this utility model, a screw plug is threaded onto the outer side of the water tank, and the end of the screw plug extends into the inner cavity of the water tank.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] (1) In this utility model, as the arc-shaped brake block and brake plate are used continuously, they will wear out, and at the same time, the distance that the slide moves outward will gradually increase. When the arc-shaped brake block and brake plate need to be replaced, the contact sensor and the slide will come into contact, indicating that the arc-shaped brake block and brake plate have been consumed. At this time, the controller will control the speaker to emit a prompt sound so that the staff can replace the arc-shaped brake block and brake plate in time.

[0014] (2) In this utility model, during the braking process, the water in the inner cavity of the water tank is pumped out by the water pump, so that the nozzle at the end of the water guide steel pipe and the water spraying groove below the spray pipe spray water out. The water sprayed by the nozzle is used to pour and cool the arc-shaped braking block and the brake disc, and the water sprayed by the water spraying groove is used to pour and cool the braking plate and the track, so as to ensure the braking effect of the arc-shaped braking block and the braking plate, and at the same time ensure the service life of the arc-shaped braking block and the braking plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a bottom view of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the U-shaped bracket of this utility model;

[0018] Figure 4 This is a schematic diagram of the square sliding rod of this utility model;

[0019] Figure 5 This is a cross-sectional schematic diagram of the water spray mechanism of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Mine car body; 2. Drive shaft; 3. Track wheel; 4. Brake disc; 5. U-shaped bracket; 6. Spring; 7. First mounting seat; 8. Arc-shaped brake block; 9. Square slide bar; 10. Second inclined plane; 11. Mounting base; 12. Two-way hydraulic cylinder; 13. Slide seat; 14. First inclined plane; 15. L-shaped mounting plate; 16. Contact sensor; 17. Controller; 18. Speaker; 19. Second braking mechanism; 20. First braking mechanism; 21. Water spraying mechanism; 22. Connecting rod; 23. Second mounting seat; 24. Brake plate; 25. Water tank; 26. Water pump; 27. Water suction pipe; 28. Four-way connector; 29. ​​Water guide steel pipe; 30. Nozzle; 31. Spray pipe; 32. Water spray trough; 33. Plug. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] Please see Figure 1-5 A braking device for an underground mine car includes a mine car body 1. Two drive shafts 2 are located at the bottom of the mine car body 1. Track wheels 3 are fixedly sleeved at both ends of the two drive shafts 2. Brake discs 4 are fixedly sleeved on the two drive shafts 2. U-shaped brackets 5 are fixedly connected to both sides of the mine car body 1. Water spraying mechanisms 21 are installed on the two U-shaped brackets 5. First braking mechanisms 20 are installed on both sides of the U-shaped brackets 5. L-shaped mounting plates 15 are fixedly connected to the outer sides of the two U-shaped brackets 5. Contact sensors 16 are fixedly installed on the inner side of the mounting plate 15. A controller 17 is fixedly installed on the outer side of the L-shaped mounting plate 15. A speaker 18 is fixedly installed on the outer side of the L-shaped mounting plate 15. A mounting base 11 is fixedly connected to the bottom of the mine car body 1. A bidirectional hydraulic cylinder 12 is fixedly installed on the mounting base 11. Slides 13 are fixedly connected to both ends of the bidirectional hydraulic cylinder 12. A first inclined surface 14 is provided on both sides of the ends of the two slides 13. A second braking mechanism 19 is provided at the bottom of the slides 13.

[0027] In this embodiment, the position of the contact sensor 16 is matched with the position of the slide block 13 to ensure that the slide block 13 can contact the contact sensor 16. In addition, when the contact sensor 16 and the slide block 13 are in contact, it means that the arc-shaped brake block 8 and the brake plate 24 have been pushed to the maximum distance, which means that the arc-shaped brake block 8 and the brake plate 24 have been consumed and need to be replaced.

[0028] For details, please refer to Figure 1 and Figure 5 The water spraying mechanism 21 includes a water tank 25 fixedly connected to the top surface of the U-shaped bracket 5. A water pump 26 is fixedly installed on the top surface of the water tank 25. The input end of the water pump 26 extends into the inner cavity of the water tank 25 and is fixedly connected to a water suction pipe 27. The output end of the water pump 26 is fixedly connected to a four-way connector 28. The three output ends of the four-way connector 28 are respectively fixedly sleeved with water guide steel pipes 29. The ends of two of the water guide steel pipes 29 extend to the top of the brake disc 4 and are fixedly connected to nozzles 30. The end of the other water guide steel pipe 29 is fixedly connected to a spray pipe 31. A water spray groove 32 is opened on the bottom surface of the spray pipe 31.

[0029] For details, please refer to Figures 1 to 4 The first braking mechanism 20 includes a spring 6 fixedly connected to the side of the U-shaped bracket 5. The end of the spring 6 is fixedly connected to a first mounting seat 7. An arc-shaped braking block 8 is mounted on the first mounting seat 7. A square slide rod 9 is fixedly connected to the first mounting seat 7. The other end of the square slide rod 9 is movably sleeved to the inside of the U-shaped bracket 5 and is provided with a second inclined surface 10. The side of the second inclined surface 10 is in contact with the side of the first inclined surface 14.

[0030] In this embodiment, the square slide bar 9 is pushed by the cooperation between the second inclined surface 10 and the first inclined surface 14 so that the arc-shaped braking block 8 at the end of the square slide bar 9 can squeeze the brake disc 4 to stop.

[0031] For details, please refer to Figures 1 to 3 The second braking mechanism 19 includes a connecting rod 22 fixedly connected to the bottom surface of the slide block 13. The bottom end of the connecting rod 22 is fixedly connected to a second mounting base 23. A brake plate 24 is mounted on the second mounting base 23, and the nozzle 31 is located above the brake plate 24.

[0032] In this embodiment, the position of the brake plate 24 is adapted to the position of the track below the track wheel 3, and the brake plate 24 is located on the inner side of the track so that the brake plate 24 can squeeze the inner side of the track to stop.

[0033] For details, please refer to Figure 3 and Figure 4 The inner diameter of the arc-shaped brake block 8 is equal to the outer diameter of the brake disc 4.

[0034] In this embodiment, the inner side of the arc-shaped brake block 8 is guaranteed to be able to squeeze and stop the brake disc 4.

[0035] For details, please refer to Figure 5 A screw plug 33 is threaded on the outer side of the water tank 25, and the end of the screw plug 33 extends into the inner cavity of the water tank 25.

[0036] In this embodiment, water is added to the inner cavity of the water tank 25 by removing the screw plug 33.

[0037] Working principle: When the moving mine car body 1 needs to be stopped, the bidirectional hydraulic cylinder 12 is activated, causing the two output ends to drive the two slide blocks 13 to move outward. The sliding between the first inclined surface 14 on the side of the two slide blocks 13 and the second inclined surface 10 at the end of the square slide rod 9 pushes the square slide rod 9 outward, causing the arc-shaped braking block 8 at the end of the square slide rod 9 to squeeze the brake disc 4 to stop. In addition, the slide blocks 13 drive the connecting rod 22, the second mounting seat 23 and the brake plate 24 to move outward, using the brake plate 24 to squeeze the inner side of the track to stop. During the braking process, the water pump 26 is activated to extract water from the inner cavity of the water tank 25. This causes water to spray from the nozzle 30 at the end of the water guide steel pipe 29 and the water spray trough 32 below the spray pipe 31. The water sprayed from the nozzle 30 is used to cool down the area between the arc-shaped brake block 8 and the brake disc 4, and the water sprayed from the water spray trough 32 is used to cool down the area between the brake plate 24 and the track. As the arc-shaped brake block 8 and the brake plate 24 continue to be used, they will wear down. When the arc-shaped brake block 8 and the brake plate 24 need to be replaced, the contact sensor 16 and the slide 13 come into contact, and the controller 17 controls the speaker 18 to emit a prompt sound so that the staff can replace the arc-shaped brake block 8 and the brake plate 24 in time.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A brake device for an underground mine car comprising a mine car body (1), characterized in that: The bottom of the mine car body (1) is provided with two drive shafts (2), the two ends of the two drive shafts (2) are respectively fixedly sleeved with track wheels (3), the two drive shafts (2) are respectively fixedly sleeved with brake discs (4), the two sides of the mine car body (1) are respectively fixedly connected with U-shaped supports (5), the two U-shaped supports (5) are respectively provided with water spraying mechanisms (21), the two sides of the U-shaped support (5) are respectively provided with first brake mechanisms (20), the outer sides of the two U-shaped supports (5) are respectively fixedly connected with L-shaped mounting plates (15), the inner sides of the two L-shaped mounting plates (15) are respectively fixedly installed with contact sensors (16), the outer side of one L-shaped mounting plate (15) is fixedly installed with a controller (17), the outer side of one L-shaped mounting plate (15) is fixedly installed with a loudspeaker (18), the bottom of the mine car body (1) is fixedly connected with a mounting base (11), the mounting base (11) is fixedly installed with a bidirectional hydraulic cylinder (12), the two ends of the bidirectional hydraulic cylinder (12) are respectively fixedly connected with sliding seats (13), the two sides of the ends of the two sliding seats (13) are respectively provided with first inclined surfaces (14), and the bottom of the sliding seat (13) is provided with a second brake mechanism (19).

2. An underground mine vehicle brake assembly according to claim 1 wherein: The water spraying mechanism (21) comprises a water tank (25) fixedly connected to the top surface of the U-shaped support (5), a water pump (26) fixedly installed on the top surface of the water tank (25), a water suction pipe (27) fixedly connected to the input end of the water pump (26) and extending into the inner cavity of the water tank (25), a four-way joint (28) fixedly connected to the output end of the water pump (26), three output ends of the four-way joint (28) are respectively fixedly sleeved with water guide steel pipes (29), the ends of two water guide steel pipes (29) respectively extend above the brake discs (4) and are fixedly connected with spray heads (30), and the end of the other water guide steel pipe (29) is fixedly connected with a spray pipe (31), and the bottom surface of the spray pipe (31) is provided with a water spraying groove (32).

3. An underground mine vehicle brake assembly according to claim 2 wherein: The first brake mechanism (20) comprises a spring (6) fixedly connected to the side surface of the U-shaped support (5), a first mounting seat (7) fixedly connected to the end of the spring (6), an arc-shaped stop block (8) installed on the first mounting seat (7), a square-shaped sliding rod (9) fixedly connected to the first mounting seat (7), the other end of the square-shaped sliding rod (9) movably sleeved to the inner side of the U-shaped support (5) and provided with a second inclined surface (10), and the side surface of the second inclined surface (10) is matched with the side surface of the first inclined surface (14).

4. An underground mine car brake assembly as defined in claim 2 wherein: The second brake mechanism (19) comprises a connecting rod (22) fixedly connected to the bottom surface of the sliding seat (13), a second mounting seat (23) fixedly connected to the bottom end of the connecting rod (22), and a stop plate (24) installed on the second mounting seat (23), and the spray pipe (31) is located above the stop plate (24).

5. An underground mine car brake assembly as defined in claim 3 wherein: The inner diameter of the arc-shaped stop block (8) is equal to the outer diameter of the brake disc (4).

6. An underground mine car brake assembly as defined in claim 2 wherein: The outer side of the water tank (25) is threadedly installed with a screw plug (33), the end of the screw plug (33) extends to the inner cavity of the water tank (25).

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