Brake device of car pusher

Abstract

The utility model provides a car pusher braking device which comprises a braking device body and a car pusher platform, the braking device body comprises a support, a hydraulic cylinder, a lifting disc and a braking cavity, an oil pump motor set and an electric control box are installed on the top of the car pusher platform, the hydraulic cylinder is installed on the braking cavity through the support, and the lifting disc is installed on the lifting disc. A brake cavity is formed in the brake device body, a brake friction plate is installed in the brake cavity, a lifting disc is arranged at the top of the brake friction plate, a lifting shaft is inserted in the middle of the lifting disc in a penetrating mode, a pre-tightening spring set is installed in the brake cavity, and the oil pump motor set provides a power source for the brake device body. The braking device is used for performing intelligent control when a train carriage is turned over to unload coal, ensures that coal is unloaded according to a coal unloading process of a car dumper in the coal unloading process, improves the working efficiency of turning over to unload coal, can be in linkage control with a system, performs remote and local control, and is sensitive in braking. The brake device is small in occupied area, compact in structure and low in failure rate.

Description

Technical Field

[0001] The utility model relates to the technical field of coal unloading in train carriages, in particular to a braking device for a cart pusher. Background Art

[0002] Transporting coal by train is the main method of transporting coal in thermal power plants, coal chemical industry, mining and other industries. The coal in the train carriages is then turned over and unloaded into the coal ditch by a car dumper. During the unloading process, the car pusher controls the movement and stopping of the carriage through the braking device. The car pusher braking device is a widely used control device during the operation of the car dumper.

[0003] According to the coal unloading process, after the entire coal train arrives at the coal unloading location and stops, each fully loaded carriage is uncoupled by a pusher and pulled along the dedicated track to the coal unloading ditch tipper working position. The tipper clamp clamps the carriage and flips it over as a whole. The raw coal is unloaded into the coal unloading ditch under the action of gravity. The empty carriage flips in the opposite direction with the flipped tipper. After the carriage wheels fall onto the dedicated track, the tipper clamp is released, and the empty carriage is towed to the designated location by the pusher.

[0004] However, in the existing technology, the pusher mechanism may fail to stop at the set position due to failure of the braking part, causing the carriage to "slip or slide". The equipment has a high failure rate, and the entire work process requires a large amount of manpower for auxiliary operations, which is labor-intensive and inefficient, and also has certain risks. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cart braking device to solve the problems raised in the above-mentioned background technology. The utility model effectively performs intelligent unloading of coal from trains, reduces manual labor intensity, improves system safety and economy, improves production efficiency, and effectively reduces occupational health safety risks.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a cart braking device, including a braking device body and a cart platform, the braking device body includes a bracket, a hydraulic cylinder, a lifting disc and a brake cavity, the top of the cart platform is equipped with an oil pump motor group and an electrical control box, the hydraulic cylinder is installed on the brake cavity through the bracket, the interior of the brake cavity is equipped with a brake friction pad, the top of the brake friction pad is provided with a lifting disc, the middle of the lifting disc is interspersed with a lifting shaft, the interior of the brake cavity is equipped with a preloaded spring group, and the oil pump motor group provides a power source for the braking device body.

[0007] Furthermore, a pusher drive motor installed on the top of the pusher platform provides a power source for a reducer, and the reducer drives the traveling wheels to move or stop on the guide rail through a gear shaft installed inside.

[0008] Furthermore, a hydraulic piston is installed inside the hydraulic cylinder, and the hydraulic piston is connected to the lifting shaft through a shaft joint. A signal pin is installed on the side of the shaft joint, and the signal pin pushes the travel switch to send a working signal.

[0009] Furthermore, the lifting shaft drives the lifting plate to move up and down, the preload spring group is installed at the upper end surface of the lifting plate, and a brake friction plate is installed between the lower end surface of the lifting plate and the gear shaft.

[0010] Furthermore, in a state without external force, the preloaded spring group pushes the lifting plate downward through spring thrust, and the lifting plate presses the brake friction plate and generates friction resistance on the gear shaft, and the walking wheel is in a braking state on the guide rail.

[0011] Furthermore, after the oil pump motor unit receives the operation signal and starts, it injects hydraulic oil into the hydraulic cylinder through the high-pressure oil pipe, pushing the hydraulic piston to move up and down.

[0012] Furthermore, the oil pump motor unit is equipped with a hydraulic element, and the hydraulic element has a reversing function.

[0013] Furthermore, the oil pump motor unit injects hydraulic oil into the hydraulic cylinder through the hydraulic element and the high-pressure oil pipe to push the hydraulic piston to move upward or downward. The hydraulic piston is connected to the lifting shaft through the shaft joint, and the travel switch is installed on the bracket.

[0014] Beneficial effects of the utility model:

[0015] The braking device of the trolley mechanism can effectively and intelligently unload coal from trains, reducing manual labor intensity, improving system safety and economy, increasing production efficiency, and effectively reducing occupational health risks.

[0016] The braking device of the pusher can intelligently control the turning of train carriages to unload coal, ensuring that the coal is unloaded in accordance with the unloading process of the tipper, meeting the requirements of safe and civilized production, and the measurement during the operation is accurate, and the overall cost of the system is low.

[0017] The braking device of the trolley mechanism can be interlocked with the system for remote and local control. It has sensitive braking and will not cause slippage or loss of control. It also occupies a small area, has a compact structure, a low failure rate, a wide range of applications, and is maintenance-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic structural diagram of the appearance of the braking device of the pusher mechanism of the utility model;

[0019] Figure 2 For attachment Figure 1 Left view of;

[0020] Figure 3 For attachment Figure 1 A top view of

[0021] In the figure: 1. High-pressure oil; 2. Hydraulic cylinder; 3. Hydraulic piston; 4. Bracket; 5. Shaft joint; 6. Lifting shaft; 7. Preload spring assembly; 8. Lifting plate; 9. Brake friction pad; 10. Brake chamber; 11. Gear shaft; 12. Cart pusher platform; 13. Reducer; 14. Travel wheel; 15. Guide rail; 16. Electrical control box; 17. Hydraulic element; 18. Oil pump motor unit; 19. Travel switch; 20. Signal pin; 21. Drive motor. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figures 1 to 3 The present invention provides the following technical solutions: The pusher braking device is powered by an oil pump motor unit 18 mounted on the pusher platform 12. The hydraulic cylinder 2 is mounted on the brake chamber 10 via a bracket 4. The operating state is controlled locally and remotely via an electrical control box 16. A pusher drive motor 21 is mounted on the pusher platform 12 to power the reducer 13. The gear shaft 11 within the reducer 13 drives the travel wheels 14 to move or stop on the guide rails 15. The hydraulic piston 3 is mounted within the hydraulic cylinder 2 and is connected to the lifting shaft 6 via a shaft adapter 5. A signal pin 20 is mounted on the side of the shaft adapter 5. The signal pin 20 pushes the travel switch 19 to generate an operating signal.

[0024] In this embodiment, the lifting shaft 6 is connected to the lifting plate 8, and drives the lifting plate 8 to move up and down. The lifting plate 8 is installed in the brake cavity 10, and the pre-tightening spring group 7 is installed on the upper end surface. The brake friction plate 9 is installed between the lower end surface and the gear shaft 11. The pre-tightening spring group 7 is installed in the brake cavity 10, and the upper plane contacts the lower plane of the bracket 4. In the absence of external force, the pre-tightening spring group 7 always pushes the lifting plate 8 downward through the spring thrust. The lifting plate 8 presses the brake friction plate 9 and generates friction resistance on the gear shaft 11. The walking wheel 14 is in a braking state on the guide rail 15. After the oil pump motor group 18 receives the operation signal and starts, hydraulic oil is injected into the hydraulic cylinder 2 through the high-pressure oil pipe 1 to push the hydraulic piston 3 up and down.

[0025] In this embodiment, the oil pump motor group 18 is equipped with a hydraulic element 17, which has a reversing function. When the cart pusher enters the cart pushing state, the oil pump motor group 18 is reversed through the hydraulic element 17, and the high-pressure oil pipe 1 injects hydraulic oil into the lower cavity of the hydraulic cylinder 2, and the upper cavity returns oil, pushing the hydraulic piston 3 to move upward, and the lifting plate 8 connected to the hydraulic piston 3 compresses the preloaded spring group 7 upward, loosening the brake friction plate 9, and the gear shaft 11 drives the walking wheel 14 to move horizontally on the guide rail 15 under the action of the drive motor 21; the oil pump motor group 18 is equipped with a hydraulic element 17, which has a reversing function. When the cart pusher enters the braking state, the oil pump motor group 18 is reversed through the hydraulic element 17, and the high-pressure oil pipe 1 injects hydraulic oil into the upper cavity of the hydraulic cylinder 2, and the lower cavity returns oil, pushing the hydraulic piston 3 to move downward, and the lifting plate 8 connected to the hydraulic piston 3 compresses the brake friction plate 9 downward, the gear shaft 11 is in the braking state, and the walking wheel 14 is braked and stopped on the guide rail 15. The oil pump motor unit 18 injects hydraulic oil into the hydraulic cylinder 2 through the hydraulic element 17 and the high-pressure oil pipe 1, pushing the hydraulic piston 3 to move upward or downward. The hydraulic piston 3 is connected to the lifting shaft 6 through the shaft connector 5. The signal pin 20 is installed on the shaft connector 5. The travel switch 19 is installed on the bracket 4, and the operation signal is transmitted through the travel switch 19.

[0026] Specifically, in this embodiment, the gear shaft 11 in the pusher reducer 13 is frictionally braked by the pusher braking device, thereby achieving the necessary conditions for stopping and operating the traveling wheels 14 .

[0027] The oil pump motor unit 18 provides the power source for the pusher's braking system. It is fixed to the pusher platform 12 and operates in response to operating signals from the electrical control system. The hydraulic element 17 switches its direction of operation, transferring the hydraulic oil supplied by the oil pump motor unit 18 through two high-pressure oil pipes 1 to the upper or lower inlet of the hydraulic cylinder. The hydraulic cylinder is connected to the upper and lower high-pressure oil pipes 1, housing a hydraulic piston 3. The lower end of the hydraulic piston 3 is connected to the lifting shaft 6 via a shaft connector 5. A signal pin 20 is fixed to the shaft connector 5. During the hydraulic piston 3's lifting process, the signal pin 20 pushes the travel switch 19, controlling the hydraulic piston 3's vertical travel.

[0028] The hydraulic cylinder 2 is mounted on the brake chamber 10 via the bracket 4. The brake chamber 10 is equipped with a lifting disc 8, brake friction pads 9, and a preload spring assembly 7. The preload spring assembly 7 is arranged on the upper surface of the lifting disc 8, and the brake friction pads 9 are arranged between the lower surface of the lifting disc 8 and the gear shaft 11. In its natural state, the preload spring assembly 7 pushes the lifting disc 8 to compress the brake friction pads 9. Under the action of friction, the gear shaft 11 in the reducer 13 is braked, causing the travel wheel 14 driven by the reducer 13 to stay at the specified position on the guide rail 15. When the hydraulic piston 3 moves upward, the upward pulling force is transmitted to the lifting disc 8 through the lifting shaft 6. The lifting disc 8 compresses the preload spring assembly 7 upward, releasing the brake friction pads 9. Under the action of the drive motor 21, the gear shaft 11 drives the travel wheel 14 to rotate and move horizontally on the guide rail 15.

[0029] The electrical control system transmits the signal to activate the pusher mechanism's braking system and is interlocked with the programmable control system. When the system receives the activation signal, the oil pump motor 18 is energized and activated, putting the pusher mechanism's braking system into operation. When the electrical control system receives the push signal, the hydraulic component 17 switches to the push position. High-pressure oil pipe 1 fills the lower port of the hydraulic cylinder with oil, and oil returns from the upper port. This pushes the hydraulic piston 3 upward, causing the signal pin 20 and lift plate 8 connected to the hydraulic piston 3 to move upward, releasing the brake pads 9. The drive motor 21 then drives the reducer 13 and the travel wheels 14 on the guide rails 15. The hydraulic component 17 switches to the braking position. High-pressure oil pipe 1 fills the upper port of the hydraulic cylinder with oil, and oil returns from the lower port. This pushes the hydraulic piston 3 downward, causing the signal pin 20 and lift plate 8 connected to the hydraulic piston 3 to move downward, compressing the brake pads 9, braking the gear shaft 11 in the reducer 13, and stopping the travel wheels 14 on the guide rails 15.

[0030] The electrical control system receives signals from the pusher's braking mechanism to activate. When the system enters the push mode, the signal pin 20 moves upward and contacts the upper travel switch 19, transmitting the push signal to the control system. When the system enters the braking mode, the signal pin 20 moves downward and contacts the lower travel switch 19, transmitting the braking signal to the control system.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A trolley brake device, comprising a brake device body and a trolley platform (12), characterized in that: The braking device body comprises a bracket (4), a hydraulic cylinder (2), a lifting disc (8) and a braking cavity (10); an oil pump motor group (18) and an electrical control box (16) are installed on the top of the cart platform (12); the hydraulic cylinder (2) is installed on the braking cavity (10) through the bracket (4); a brake friction plate (9) is installed inside the braking cavity (10); a lifting disc (8) is provided on the top of the brake friction plate (9); a lifting shaft (6) is inserted in the middle of the lifting disc (8); a preload spring group (7) is installed inside the braking cavity (10); and the oil pump motor group (18) provides a power source for the braking device body.

2. The braking device for a pushcart according to claim 1, characterized in that: The top of the pusher platform (12) provides a power source for the reducer (13) through the installed pusher drive motor (21), and the reducer (13) drives the walking wheel (14) to move or stop on the guide rail (15) through the gear shaft (11) installed inside.

3. The braking device for a pushcart according to claim 2, characterized in that: A hydraulic piston (3) is installed inside the hydraulic cylinder (2), and the hydraulic piston (3) is connected to the lifting shaft (6) through a shaft joint (5). A signal pin (20) is installed on the side of the shaft joint (5), and the signal pin (20) pushes the travel switch (19) to send a working signal.

4. The braking device for a pushcart according to claim 3, characterized in that: The lifting shaft (6) drives the lifting plate (8) to move up and down, the preload spring group (7) is installed at the upper end surface of the lifting plate (8), and a brake friction plate (9) is installed between the lower end surface of the lifting plate (8) and the gear shaft (11).

5. The braking device for a pushcart according to claim 4, characterized in that: In a state without external force, the preload spring group (7) pushes the lifting plate (8) downward through spring thrust, the lifting plate (8) presses the brake friction plate (9) and generates friction resistance on the gear shaft (11), and the walking wheel (14) is in a braking state on the guide rail (15).

6. The braking device for a pushcart according to claim 3, characterized in that: After receiving the operation signal and starting, the oil pump motor unit (18) injects hydraulic oil into the hydraulic cylinder (2) through the high-pressure oil pipe (1), pushing the hydraulic piston (3) to move up and down.

7. The braking device for a pushcart according to claim 6, characterized in that: The oil pump motor unit (18) is equipped with a hydraulic element (17), and the hydraulic element (17) has a reversing function.

8. The braking device for a pushcart according to claim 7, characterized in that: The oil pump motor unit (18) injects hydraulic oil into the hydraulic cylinder (2) through the hydraulic element (17) and the high-pressure oil (1) pipe, thereby pushing the hydraulic piston (3) to move upward or downward. The hydraulic piston (3) is connected to the lifting shaft (6) through the shaft joint (5). The travel switch (19) is installed on the bracket (4).

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