Mine car braking device

Abstract

The utility model relates to the technical field of mine car assemblies, and discloses a mine car braking device which comprises a mine car base, a magnetic braking mechanism is arranged at the bottom of the mine car base, a braking protection mechanism is arranged at the bottom of the mine car base, the magnetic braking mechanism comprises a fixing base, and the fixing base is fixedly installed at the bottom of the mine car base. A limiting rod is fixedly installed on the side face of the fixing base, and a sliding arm is slidably connected to the outer wall of the limiting rod. By means of the design of the electromagnet, the electromagnet can be electrified to work to generate magnetic force, the magnetic force can magnetically attract the magnetic block, the magnetic block is promoted to move towards the electromagnet, and therefore the first arc-shaped brake plate can be driven to be attached to the outer wall of the second arc-shaped brake plate. According to the structure, the response speed of braking is high, the sensitivity is high, the number of driving assemblies is small, and maintenance work can be conveniently carried out.

Description

Technical Field

[0001] This utility model relates to the field of mining car component technology, specifically to a mining car braking device. Background Technology

[0002] A mine car is a specialized vehicle used for rail transport in mines, primarily for conveying bulk materials such as coal, ore, and waste rock. Mine cars are typically pulled by locomotives or winches and are suitable for rail transport in underground mine roadways, shafts, and on the surface. Mine cars have a compact size to accommodate the narrow conditions of underground roadways. Based on their structure and unloading method, mine cars are classified into five main categories: stationary mine cars, tipper mine cars, single-sided curved rail side-discharge mine cars, bottom-discharge mine cars, and shuttle mine cars.

[0003] Mining cars rely heavily on compressed air to drive the brake shoes for braking. The braking response time is relatively long, which is not fast or sensitive enough. In addition, the air compression components involve a lot of equipment, making maintenance work quite complicated. Utility Model Content

[0004] The purpose of this utility model is to provide a mine car braking device that solves the problems of poor braking effect and complicated maintenance work in the existing technology that uses compressed air for braking.

[0005] This utility model provides the following technical solution: a mine car braking device, including a mine car base, a magnetic braking mechanism at the bottom of the mine car base, and a braking protection mechanism at the bottom of the mine car base.

[0006] The magnetic braking mechanism includes a fixed base, which is fixedly installed at the bottom of the mine car base. A limit rod is fixedly installed on the side of the fixed base. A sliding arm is slidably connected to the outer wall of the limit rod. An elastic element is fixedly installed on the side of the fixed base. The end of the elastic element away from the fixed base is fixedly connected to the outer wall of the sliding arm. An electromagnet is fixedly installed on the side of the fixed base. A magnetic block is fixedly installed on the outer wall of the sliding arm.

[0007] As a preferred embodiment of the above technical solution, the end of the sliding arm is detachably connected to a connecting strip plate, and an arc-shaped brake plate is fixedly installed on the inner wall of the connecting strip plate.

[0008] The above technical solution, through the connection design of the sliding arm and the connecting strip, allows for the replacement of the damaged No. 1 arc-shaped brake plate.

[0009] As a preferred embodiment of the above technical solution, the magnetic braking mechanism further includes a raised seat, which is fixedly installed at the bottom of the mine car base. A rotating shaft is rotatably connected to the inner wall of the raised seat, and a movable wheel is fixedly installed at the end of the rotating shaft.

[0010] The above technical solution, through the design of the raised seat, rotating shaft and moving wheels, facilitates the movement function of the mine car base.

[0011] As a preferred embodiment of the above technical solution, a center shaft is fixedly installed at the end of the rotating shaft away from the moving wheel, and a second arc-shaped brake plate is detachably connected to the outer wall of the center shaft.

[0012] Through the above technical solution, and by designing the connection between the center shaft and the second arc-shaped brake plate, the damaged second arc-shaped brake plate can be replaced.

[0013] As a preferred embodiment of the above technical solution, the braking protection mechanism includes a central hollow plate, which is fixedly installed at the center of the bottom of the mine car base, and a branch pipe is fixedly connected to the outer wall of the central hollow plate.

[0014] Through the above technical solution, the design of the branch tube enables the inner cavity of the branch hollow plate to be connected with that of the central hollow plate.

[0015] As a preferred embodiment of the above technical solution, the branch pipe is fixedly connected to a branch hollow plate at one end away from the central hollow plate, the branch hollow plate is fixedly installed at the bottom of the mine car base, and an exhaust hole is provided at the bottom of the branch hollow plate.

[0016] The above technical solution, through the design of the exhaust port, facilitates the delivery of cooling air to the No. 1 arc-shaped brake plate.

[0017] As a preferred embodiment of the above technical solution, a duct fan is fixedly connected to the bottom of the central hollow plate, a movable plate is detachably connected to the bottom of the duct fan, a movable frame is fixedly connected to the bottom of the movable plate, and a filter screen is fixedly installed on the inner wall of the movable frame.

[0018] Through the above technical solution, the design of the duct fan can provide power for the heat dissipation of the No. 1 arc-shaped brake plate.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention utilizes an electromagnet design that generates magnetic force when energized. This magnetic force attracts a magnetic block, causing it to move towards the electromagnet. This movement causes the first arc-shaped brake plate to adhere to the outer wall of the second arc-shaped brake plate. Compared to braking with compressed air, this structure offers faster braking response, higher sensitivity, and fewer driving components, facilitating maintenance and enhancing practicality. The brake protection mechanism provides ventilation and heat dissipation for both arc-shaped brake plates, extending their service life and ensuring braking stability. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a schematic diagram of the connection structure between the fixed base and the No. 1 arc-shaped brake plate of this utility model;

[0023] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0024] Figure 4 This is a schematic diagram of the structure of the protrusion seat of this utility model;

[0025] Figure 5 This is a schematic diagram of the braking protection mechanism of this utility model;

[0026] Figure 6 for Figure 5 A magnified structural diagram at point B in the middle.

[0027] In the diagram: 1. Mine car base; 2. Magnetic braking mechanism; 21. Fixed seat; 22. Limiting rod; 23. Sliding arm; 24. Elastic element; 25. Electromagnet; 251. Magnetic block; 26. Connecting strip; 27. No. 1 arc-shaped brake plate; 28. Protruding seat; 281. Rotating shaft; 282. Moving wheel; 283. Center shaft; 284. No. 2 arc-shaped brake plate; 3. Braking protection mechanism; 31. Center hollow plate; 32. Branch pipe; 33. Branch hollow plate; 34. Pipe fan; 35. Movable plate; 36. Movable frame; 37. Filter screen. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] like Figures 1-6As shown, this utility model provides a technical solution: a mine car braking device, including a mine car base 1, a magnetic braking mechanism 2 and a braking protection mechanism 3 at the bottom of the mine car base 1, the magnetic braking mechanism 2 including a fixed seat 21, the fixed seat 21 being fixedly installed at the bottom of the mine car base 1, a limit rod 22 being fixedly installed on the side of the fixed seat 21, a sliding arm 23 being slidably connected to the outer wall of the limit rod 22, an elastic element 24 being fixedly installed on the side of the fixed seat 21, the end of the elastic element 24 away from the fixed seat 21 being fixedly connected to the outer wall of the sliding arm 23, an electromagnet 25 being fixedly installed on the side of the fixed seat 21, and a magnetic block 251 being fixedly installed on the outer wall of the sliding arm 23, controlling the electromagnet 25 to generate magnetic force, the magnetic force can magnetically attract the magnetic block 251, causing the magnetic block 251 to move. The sliding arm 23 moves towards the electromagnet 25, while the sliding arm 23 slides on the outer wall of the limiting rod 22, causing the first arc-shaped brake plate 27 to adhere to the outer wall of the second arc-shaped brake plate 284. The braking function is achieved through the friction between the first arc-shaped brake plate 27 and the second arc-shaped brake plate 284. Compared with braking by compressed air, this structure has a faster braking response speed, higher sensitivity, and fewer driving components, making maintenance easier. During the movement of the sliding arm 23, the elastic element 24 is compressed. After the electromagnet 25 is closed, the first arc-shaped brake plate 27 is reset by the reset force of the elastic element 24, releasing the braking state. The materials of the fixed base 21, the limiting rod 22, the sliding arm 23, the elastic element 24, the connecting strip 26, and the first arc-shaped brake plate 27 are all non-magnetic materials.

[0030] As one implementation method in this embodiment, such as Figures 1-4 As shown, a connecting strip 26 is detachably connected to the end of the sliding arm 23. An arc-shaped brake plate 27 is fixedly installed on the inner wall of the connecting strip 26. The magnetic braking mechanism 2 also includes a protruding seat 28, which is fixedly installed at the bottom of the mine car base 1. A rotating shaft 281 is rotatably connected to the inner wall of the protruding seat 28. A moving wheel 282 is fixedly installed at the end of the rotating shaft 281. A central shaft 283 is fixedly installed at the end of the rotating shaft 281 away from the moving wheel 282. A detachable connecting strip 27 is installed on the outer wall of the central shaft 283. The detachable connection includes a second arc-shaped brake plate 284. The connecting strip 26 and the first arc-shaped brake plate 27 are connected by bolts. Users can replace the worn first arc-shaped brake plate 27. The center shaft 283 and the second arc-shaped brake plate 284 are connected by bolts. Users can replace the worn second arc-shaped brake plate 284, extending the service life of this structure. The design of the protruding seat 28, rotating shaft 281 and moving wheel 282 facilitates the movement of the mine car base 1.

[0031] As one implementation method in this embodiment, such as Figure 5 , Figure 6As shown, the braking protection mechanism 3 includes a central hollow plate 31, which is fixedly installed at the center of the bottom of the mine car base 1. A branch pipe 32 is fixedly connected to the outer wall of the central hollow plate 31. A branch hollow plate 33 is fixedly connected to the end of the branch pipe 32 away from the central hollow plate 31. The branch hollow plate 33 is fixedly installed at the bottom of the mine car base 1. An exhaust hole is opened at the bottom of the branch hollow plate 33. A duct fan 34 is fixedly connected to the bottom of the central hollow plate 31. A movable plate 35 is detachably connected to the bottom of the duct fan 34. A movable frame 36 is fixedly connected to the bottom of the movable plate 35. A movable frame 36 is fixedly installed on the inner wall of the movable frame 36. The filter screen 37 and the movable plate 35 are connected to the duct fan 34 by bolts. The user can disassemble and clean the filter screen 37. During the braking process, the electromagnet 25 is energized to control the duct fan 34 to work, absorb the air filtered by the filter screen 37, and then deliver it to the inner cavity of the central hollow plate 31. The air enters the branch hollow plate 33 through the branch pipe 32, and then passes through the exhaust hole to the first arc brake plate 27 and the second arc brake plate 284 to realize the function of ventilation and heat dissipation, extend the service life of the first arc brake plate 27 and the second arc brake plate 284, and ensure the braking stability of this structure.

[0032] Working principle: When braking is required, the electromagnet 25 is energized to generate magnetic force, which magnetically attracts the magnetic block 251, causing the sliding arm 23 to slide on the outer wall of the limit rod 22. This causes the first arc-shaped brake plate 27 to adhere to the outer wall of the second arc-shaped brake plate 284. The friction between the first arc-shaped brake plate 27 and the second arc-shaped brake plate 284 achieves the braking function. During the braking process, the duct fan 34 is controlled to work, absorbing air and then delivering it to the inner cavity of the central hollow plate 31. The air enters the branch hollow plate 33 through the branch pipe 32, and then passes through the exhaust hole to the first arc-shaped brake plate 27 and the second arc-shaped brake plate 284, thus achieving the function of ventilation and heat dissipation at the friction braking point.

[0033] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A mine car braking device comprising a mine car base (1), characterized in that: The bottom of the mine car base (1) is provided with a magnetic brake mechanism (2), and the bottom of the mine car base (1) is provided with a brake protection mechanism (3). The magnetic brake mechanism (2) comprises a fixed seat (21) fixedly installed at the bottom of the mine car base (1), a limiting rod (22) fixedly installed on the side of the fixed seat (21), a sliding arm (23) slidably connected to the outer wall of the limiting rod (22), an elastic member (24) fixedly installed on the side of the fixed seat (21), one end of the elastic member (24) away from the fixed seat (21) being fixedly connected to the outer wall of the sliding arm (23), an electromagnet (25) fixedly installed on the side of the fixed seat (21), and a magnetic block (251) fixedly installed on the outer wall of the sliding arm (23).

2. A mine car brake assembly as defined in claim 1 wherein: The end of the sliding arm (23) is detachably connected with a connecting strip plate (26), and the inner wall of the connecting strip plate (26) is fixedly installed with a first arc-shaped brake plate (27).

3. A mine car brake assembly as defined in claim 1 wherein: The magnetic brake mechanism (2) further comprises a protruding seat (28) fixedly installed at the bottom of the mine car base (1), a rotating shaft (281) rotatably connected to the inner wall of the protruding seat (28), and a moving wheel (282) fixedly installed at the end of the rotating shaft (281).

4. A mine car brake assembly as defined in claim 3 wherein: The end of the rotating shaft (281) away from the moving wheel (282) is fixedly installed with a middle shaft (283), and the outer wall of the middle shaft (283) is detachably connected with a second arc-shaped brake plate (284).

5. A mine car brake assembly as defined in claim 1 wherein: The brake protection mechanism (3) comprises a middle hollow plate (31) fixedly installed at the center of the bottom of the mine car base (1), and a branch pipe (32) fixedly connected to the outer wall of the middle hollow plate (31).

6. A mine car brake assembly as defined in claim 5 wherein: The end of the branch pipe (32) away from the middle hollow plate (31) is fixedly connected with a branch hollow plate (33) fixedly installed at the bottom of the mine car base (1), and an exhaust hole is formed in the bottom of the branch hollow plate (33).

7. A mine car brake assembly according to claim 6 wherein: The bottom of the middle hollow plate (31) is fixedly connected with a pipeline fan (34), the bottom of the pipeline fan (34) is detachably connected with a movable plate (35), the bottom of the movable plate (35) is fixedly connected with a movable frame (36), and the inner wall of the movable frame (36) is fixedly installed with a filter screen (37).

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