Device overload protection for coal mining machinery

Abstract

This utility model relates to the field of overload protection technology for mechanical equipment, and discloses an overload protection device for coal mining machinery. The device includes a housing, with a first motor fixedly connected to the outer wall of the housing. An eccentric circle is fixedly arranged at the output end of the first motor. A first connecting column is rotatably connected to the outer wall of the eccentric circle. A rotating block is rotatably connected to the outer wall of the first connecting column. A connecting block is rotatably connected to the outer wall of the rotating block. A limiting rod is rotatably connected to the inner wall of the rotating block. Both ends of the limiting rod are fixedly connected to the inner wall of the housing. In this utility model, turning on the first motor drives the eccentric circle to rotate, which in turn moves the first connecting column. The first connecting column, through the rotating block, drives the connecting block to move. The connecting block, in turn, causes the limiting plate to move under the constraint of the supporting column, thereby causing the supporting frame and the internal filter screen to vibrate. This achieves the effects of reducing wet coal adhesion, screening coal to remove impurities, and preventing overload during transportation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment overload protection technology, and in particular to an equipment overload protection device for coal mining machinery. Background Technology

[0002] Overload protection devices for coal mining machinery are crucial components for ensuring safe production and stable equipment operation in coal mines. During coal mining and transportation, various types of machinery, such as coal mining machines, scraper conveyors, and belt conveyors, often face situations where the load exceeds their design limits. Overload protection devices can monitor the equipment's operating status in real time, preventing damage due to overload. Traditional methods involve cutting off the power source to the machinery.

[0003] Traditional methods involve cutting off the power source of mechanical equipment, but this often results in a slow response, and can easily lead to overload, jamming, and other damage to the machine. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides an overload protection device for coal mining machinery, which aims to improve the problem of overload, jamming and other phenomena that can damage the machine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an overload protection device for coal mining machinery, comprising a housing, a first motor fixedly connected to the outer wall of the housing, an eccentric circle fixedly provided at the output end of the first motor, a first connecting column rotatably connected to the outer wall of the eccentric circle, a rotating block rotatably connected to the outer wall of the first connecting column, a connecting block rotatably connected to the outer wall of the rotating block, a limiting rod rotatably connected to the inner wall of the rotating block, both ends of the limiting rod being fixedly connected to the inner wall of the housing, a support column rotatably connected to the outer wall of the connecting block, a limiting plate slidably connected to the outer wall of the support column, the outer wall of the limiting plate being fixedly connected to the inner wall of the housing, a support frame fixedly connected to the upper surface of the support column, the lower surface of the support frame being disposed on the upper surface of the housing, a filter screen fixedly connected to the inner wall of the support frame, and a collection mechanism provided on the outer wall of the housing.

[0006] Preferably, the collection mechanism includes a collection box, the outer wall of which is fixedly connected to the outer wall of the outer shell, and a support shell is fixedly connected to the inner wall of the collection box. A second motor is fixedly connected to the upper surface of the support shell.

[0007] Preferably, the output end of the second motor is fixedly provided with an auger, both ends of which are rotatably connected to the inside of the support shell, and the outer wall of the support shell is fixedly connected with a limiting shell.

[0008] Preferably, a movable plate is slidably connected to the inner wall of the limiting shell, and a third motor is fixedly connected to the upper surface of the movable plate.

[0009] Preferably, the output end of the third motor is fixedly provided with a rotating disk, and the outer wall of the rotating disk is rotatably connected to the inner wall of the moving plate.

[0010] Preferably, a second connecting column is fixedly connected to the lower surface of the rotating disk, and a scraper is slidably connected to the outer wall of the second connecting column.

[0011] Preferably, the outer wall of the scraper is slidably connected to the inner wall of the limiting shell, and the inner wall of the limiting shell is rotatably connected to a rotating shaft.

[0012] Preferably, the outer wall of the rotating shaft is provided with a conveyor belt, the lower surface of the limiting shell is fixedly connected with a support leg, and the upper surface of the limiting shell is fixedly connected with a hydraulic cylinder.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the first motor is turned on to drive the eccentric circle to rotate, which in turn drives the first connecting column to move. The first connecting column drives the connecting block to move through the rotating block. The connecting block drives the limiting plate to move under the restriction of the support column, thereby driving the support frame and the internal filter screen to vibrate. This achieves the effects of reducing wet coal adhesion, screening coal to remove impurities, and preventing overloading during transportation.

[0015] 2. In this utility model, the third motor is first turned on to drive the rotating disk inside the moving plate to rotate. Then, the second connecting column on the lower surface of the rotating disk drives the scraper to move. The hydraulic cylinder is turned on to drive the moving plate to move. The rotating disk and the second connecting column drive the scraper to move up and down, which achieves the effect of removing foreign objects, evenly conveying coal on the conveyor belt, and preventing overload in some places. Attached Figure Description

[0016] Figure 1 This is a perspective view of the equipment overload protection device for coal mining machinery proposed in this utility model.

[0017] Figure 2 This is a partial structural diagram of the support column of the equipment overload protection device for coal mining machinery proposed in this utility model.

[0018] Figure 3 This is a partial structural diagram of the auger of the equipment overload protection device for coal mining machinery proposed in this utility model;

[0019] Figure 4 This is a partial structural diagram of the rotating disk of the equipment overload protection device for coal mining machinery proposed in this utility model.

[0020] Figure 5 This is a partial structural diagram of the limiting shell of the equipment overload protection device for coal mining machinery proposed in this utility model.

[0021] Legend:

[0022] 1. Outer shell; 2. First motor; 3. Eccentric circle; 4. First connecting column; 5. Rotating block; 6. Connecting block; 7. Limiting rod; 8. Support column; 9. Limiting plate; 10. Support frame; 11. Filter screen; 12. Collection box; 13. Support shell; 14. Screwdriver; 15. Second motor; 16. Limiting shell; 17. Third motor; 18. Moving plate; 19. Rotating disk; 20. Second connecting column; 21. Scraper; 22. Conveyor belt; 23. Rotating shaft; 24. Support leg; 25. Hydraulic cylinder. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 5 An embodiment of this utility model provides an overload protection device for coal mining machinery, comprising a housing 1, a first motor 2 fixedly connected to the outer wall of the housing 1, an eccentric circle 3 fixedly provided at the output end of the first motor 2, a first connecting column 4 rotatably connected to the outer wall of the eccentric circle 3, a rotating block 5 rotatably connected to the outer wall of the first connecting column 4, a connecting block 6 rotatably connected to the outer wall of the rotating block 5, a limiting rod 7 rotatably connected to the inner wall of the rotating block 5, both ends of the limiting rod 7 being fixedly connected to the inner wall of the housing 1, a support column 8 rotatably connected to the outer wall of the connecting block 6, a limiting plate 9 slidably connected to the outer wall of the support column 8, the outer wall of the limiting plate 9 being fixedly connected to the inner wall of the housing 1, a support frame 10 fixedly connected to the upper surface of the support column 8, the lower surface of the support frame 10 being disposed on the upper surface of the housing 1, a filter screen 11 fixedly connected to the inner wall of the support frame 10, and a collection mechanism provided on the outer wall of the housing 1.

[0025] Specifically, firstly, the first motor 2 is activated, driving the eccentric circle 3 to rotate. The outer casing 1 restricts the first motor 2, ensuring its position remains unchanged. The eccentric circle 3 supports and restricts the first connecting column 4, ensuring that the first connecting column 4 rotates when driven by the first motor 2. The first connecting column 4 supports and restricts the rotating block 5, causing it to move. A limiting rod 7 supports and restricts the rotating block 5, ensuring that the rotating block 5 is also restricted by the limiting rod 7 on the outer casing 1 when driven by the first connecting column 4. The rotating block 5 supports and... The limiting mechanism causes the connecting block 6 to move up and down when the rotating block 5 vibrates. The outer shell 1 limits the limiting plate 9, which restricts the support column 8 from moving up and down and prevents the plate 9 from changing its position within the outer shell 1. The support column 8 supports and limits the support frame 10, ensuring that the support frame 10 moves when the support column 8 moves. The support frame 10 limits the filter screen 11, ensuring that the position of the filter screen 11 within the support frame 10 does not change. The filter screen 11 can be replaced to clean the support frame 10 and the filter screen 11. The inclined surface of the filter screen 11 prevents coal from blocking the screen opening, separating coal from impurities and reducing the load during transportation.

[0026] Reference Figure 1 , Figure 3 and Figure 5 The collection mechanism includes a collection box 12, the outer wall of which is fixedly connected to the outer wall of the outer shell 1, a support shell 13 is fixedly connected to the inner wall of the collection box 12, and a second motor 15 is fixedly connected to the upper surface of the support shell 13; an auger 14 is fixedly installed at the output end of the second motor 15, and both ends of the auger 14 are rotatably connected to the inside of the support shell 13; a limiting shell 16 is fixedly connected to the outer wall of the support shell 13.

[0027] Specifically, firstly, the second motor 15 is turned on to drive the auger 14 to rotate. The support shell 13 supports and restricts the second motor 15, ensuring that the position of the second motor 15 in the support shell 13 does not change. The collection box 12 supports and restricts the support shell 13. The inclined surface inside the collection box 12 allows coal to enter the support shell 13. The feed inlet and discharge outlet of the support shell 13 are provided with inclined surfaces, making it easier for the auger 14 to carry the coal to the designated position. The support shell 13 supports and restricts the auger 14, ensuring that the support shell 13 will not deviate when rotating, and transporting the screened coal to the designated position.

[0028] Reference Figure 1 , Figure 4 and Figure 5A movable plate 18 is slidably connected to the inner wall of the limiting shell 16, and a third motor 17 is fixedly connected to the upper surface of the movable plate 18; a rotating disk 19 is fixedly installed at the output end of the third motor 17, and the outer wall of the rotating disk 19 is rotatably connected to the inner wall of the movable plate 18; a second connecting column 20 is fixedly connected to the lower surface of the rotating disk 19, and a scraper 21 is slidably connected to the outer wall of the second connecting column 20; the outer wall of the scraper 21 is slidably connected to the inner wall of the limiting shell 16, and a rotating shaft 23 is rotatably connected to the inner wall of the limiting shell 16; a conveyor belt 22 is installed on the outer wall of the rotating shaft 23; a support leg 24 is fixedly connected to the lower surface of the limiting shell 16, and a hydraulic cylinder 25 is fixedly connected to the upper surface of the limiting shell 16;

[0029] Specifically, the third motor 17 is activated to drive the rotating disk 19 to rotate. The limiting shell 16 supports and restricts the moving plate 18, ensuring that the moving plate 18 moves within the range limited by the limiting shell 16. The moving plate 18 supports and restricts the third motor 17, ensuring that the position of the third motor 17 on the moving plate 18 does not change. The moving plate 18 restricts the rotating disk 19, ensuring that while the rotating disk 19 is driven to rotate by the third motor 17, it is also prevented from falling by the second connecting column 20. The rotating disk 19 restricts the second connecting column 20, ensuring that the rotating disk 19 drives the second connecting column 20 to rotate. The scraper block 21 is restricted by the second connecting column 20 and the limiting shell 16, causing the scraper block 21 to be driven by the second connecting column 20 within the limited range. Within the restricted range of the shell 16, it can move left and right, and the second connecting column 20 slides inside the scraper 21 and can restrict the vertical movement of the scraper 21. The shell 16 supports and restricts the rotating shaft 23, so that while the rotating shaft 23 rotates inside the shell 16, it drives the rotating shaft 23 to move. The movement of the rotating shaft 23 drives the coal it carries to move. The support leg 24 supports and restricts the shell 16 to ensure that the position of the shell 16 does not change. The shell 16 supports and restricts the hydraulic cylinder 25, so that the hydraulic cylinder 25 drives the scraper 21 to move up and down through the moving plate 18. The scraper 21 only acts on the coal in one direction, which can remove foreign objects, evenly convey the coal on the conveyor belt 22, and prevent overload in some areas.

[0030] Working principle: When coal screening is required, the first motor 2 is turned on to drive the eccentric circle 3 to rotate, which in turn drives the first connecting column 4 to rotate. The first connecting column 4 drives the rotating block 5. The limiting rod 7 on the inner wall of the outer shell 1 restricts the movement of the rotating block 5 and supports it. The rotating block 5 drives the connecting block 6 to move, which in turn drives the support column 8, which is restricted to moving up and down by the limiting plate 9. The support column 8 drives the support frame 10 to move, and the support frame 10 drives the filter screen 11 to screen the coal, thereby reducing the adhesion of wet coal, screening coal to remove impurities, and preventing overloading during transportation.

[0031] When the screened coal needs to be placed on the conveyor belt 22, the second motor 15 is turned on to drive the auger 14 inside the support shell 13 to rotate, and the coal inside the collection box 12 is transported. The coal is placed on the conveyor belt 22 through the discharge port above, achieving the effect of fast coal transportation.

[0032] When coal needs to be transported, the third motor 17 on the moving plate 18 is first turned on to drive the rotating disk 19 inside the moving plate 18 to rotate, which in turn drives the second connecting column 20 to rotate. The rotation of the second connecting column 20 drives the scraper 21 to move left and right. The hydraulic cylinder 25 is turned on to drive the moving plate 18 to move. Finally, the second connecting column 20 is driven to move up and down. When the second connecting column 20 reaches its farthest point, the scraper 21 is lowered to act on the coal again. The rotating shaft 23 is turned on to drive the conveyor belt 22 to move, which in turn drives the coal to move. This achieves the effect of removing foreign objects, evenly distributing the coal on the conveyor belt 22, and preventing overload in some areas.

[0033] This device not only reduces wet coal adhesion, screens coal to remove impurities, and prevents overloading during transportation, but also achieves the effect of rapid coal transportation. Finally, it can remove foreign objects, evenly distribute coal on the conveyor belt 22, and prevent overloading in some areas.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An overload protection device for coal mining machinery, comprising a housing (1), characterized in that: The outer wall of the outer shell (1) is fixedly connected to a first motor (2), and an eccentric circle (3) is fixedly provided at the output end of the first motor (2). The outer wall of the eccentric circle (3) is rotatably connected to a first connecting column (4). The outer wall of the first connecting column (4) is rotatably connected to a rotating block (5). The outer wall of the rotating block (5) is rotatably connected to a connecting block (6). The inner wall of the rotating block (5) is rotatably connected to a limiting rod (7). Both ends of the limiting rod (7) are fixedly connected to the inner wall of the outer shell (1). The outer wall of the connecting block (6) is rotatably connected to a support column (8). The outer wall of the support column (8) is slidably connected to a limiting plate (9). The outer wall of the limiting plate (9) is fixedly connected to the inner wall of the outer shell (1). The upper surface of the support column (8) is fixedly connected to a support frame (10). The lower surface of the support frame (10) is provided on the upper surface of the outer shell (1). The inner wall of the support frame (10) is fixedly connected to a filter screen (11). The outer wall of the outer shell (1) is provided with a collection mechanism.

2. The equipment overload protection device for coal mining machinery according to claim 1, characterized in that: The collection mechanism includes a collection box (12), the outer wall of which is fixedly connected to the outer wall of the outer shell (1), the inner wall of which is fixedly connected to a support shell (13), and the upper surface of the support shell (13) is fixedly connected to a second motor (15).

3. The equipment overload protection device for coal mining machinery according to claim 2, characterized in that: The output end of the second motor (15) is fixedly provided with an auger (14), both ends of which are rotatably connected to the inside of the support shell (13), and the outer wall of the support shell (13) is fixedly connected with a limiting shell (16).

4. The equipment overload protection device for coal mining machinery according to claim 3, characterized in that: The inner wall of the limiting shell (16) is slidably connected to a movable plate (18), and the upper surface of the movable plate (18) is fixedly connected to a third motor (17).

5. The equipment overload protection device for coal mining machinery according to claim 4, characterized in that: The output end of the third motor (17) is fixedly provided with a rotating disk (19), and the outer wall of the rotating disk (19) is rotatably connected to the inner wall of the moving plate (18).

6. The equipment overload protection device for coal mining machinery according to claim 5, characterized in that: The lower surface of the rotating disk (19) is fixedly connected to a second connecting column (20), and a scraper (21) is slidably connected to the outer wall of the second connecting column (20).

7. The equipment overload protection device for coal mining machinery according to claim 6, characterized in that: The outer wall of the scraper (21) is slidably connected to the inner wall of the limiting shell (16), and the inner wall of the limiting shell (16) is rotatably connected to the rotating shaft (23).

8. The equipment overload protection device for coal mining machinery according to claim 7, characterized in that: The outer wall of the rotating shaft (23) is provided with a conveyor belt (22), the lower surface of the limiting shell (16) is fixedly connected with a support leg (24), and the upper surface of the limiting shell (16) is fixedly connected with a hydraulic cylinder (25).

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