A lifting device for hydraulic supports

Abstract

This utility model discloses a lifting device for a hydraulic support, relating to the technical field of lifting devices. It includes a base plate and a protective cover fixedly connected to the upper end of the base plate. An L-shaped support plate is fixedly connected to the surface of the base plate. A first servo motor is detachably connected to the upper end of the L-shaped support plate. The output shaft of the first servo motor is detachably connected to a rotating rod, and a gear is fixedly connected to the outer surface of the rotating rod. A gear ring meshes with one side of the gear, and a rotating block is fixedly connected inside the gear ring. A fixed cylinder is fixedly connected to the upper end of the rotating block. A battery and a second servo motor are installed inside the fixed cylinder. The output shaft of the second servo motor is detachably connected to a first threaded rod. This lifting device for a hydraulic support, through the transmission of a servo motor and a gear ring, allows for flexible adjustment of the lifting position; it precisely controls the lifting height using structures such as the threaded rod, reducing friction loss; and the adjustable support legs combined with the telescopic rod maintain stability on uneven ground.

Description

Technical Field

[0001] This utility model relates to the technical field of lifting devices, and in particular to a lifting device for hydraulic supports. Background Technology

[0002] In coal mining, hydraulic supports are key equipment. Their base plates often sink into the bedrock due to geological stress and coal seam mining, resulting in reduced support capacity and difficulty in moving the supports, which affects mining efficiency and safety. Existing bottom-lifting devices often have problems such as limited adjustment angle and low degree of automation, requiring frequent manual disassembly and adjustment. They also have poor stability in uneven roadways and are difficult to control the lifting height accurately, failing to meet the needs of complex underground operations and bringing certain adverse effects to the use process. In order to overcome the shortcomings of existing technologies, we propose a bottom-lifting device for hydraulic supports. Utility Model Content

[0003] The main objective of this invention is to provide a lifting device for hydraulic supports, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A lifting device for a hydraulic support includes a base plate and a protective cover fixedly connected to the upper end of the base plate. An L-shaped support plate is fixedly connected to the surface of the base plate. A first servo motor is detachably connected to the upper end of the L-shaped support plate. A rotating rod is detachably connected to the output shaft of the first servo motor, and a gear is fixedly connected to the outer surface of the rotating rod. A gear ring meshes with one side of the gear, and a rotating block is fixedly connected inside the gear ring. A fixed cylinder is fixedly connected to the upper end of the rotating block. A battery and a second servo motor are installed inside the fixed cylinder. The output shaft of the second servo motor is detachably connected to... A first threaded rod is connected, and a lifting rod is threadedly connected to the outer surface of the first threaded rod. A first slider is fixedly connected to both sides of the lifting rod, and a groove corresponding to the first slider is opened on the inner surface of both sides of the fixed cylinder. A fixed plate is fixedly connected to the top of the lifting rod, and an L-shaped connecting plate is fixedly connected to one side of the fixed plate. A lifting base plate is fixedly connected to the lower end of the L-shaped connecting plate. A reinforcing rib is fixedly connected to the bend of the L-shaped connecting plate. A slide rail is detachably connected to the upper end of the base plate, and a second slider is slidably connected to the slide rail. A telescopic rod is detachably connected to the upper end of the second slider.

[0005] Preferably, a fixing nut is fixedly connected to each corner of the base plate surface, a second threaded rod is internally threaded to the fixing nut, and a fastening bolt for fixing the second threaded rod is provided at the front end of the fixing nut. A support leg is rotatably connected to the lower end of the second threaded rod, and a rotating disk is fixedly connected to the top of the second threaded rod.

[0006] Preferably, two bearings are detachably embedded on the surface of the base plate, and the rotating rod and the rotating block are rotatably connected to the two bearings respectively.

[0007] Preferably, the protective cover is a metal plate structure, with a sealing strip at the connection between its inner wall and the bottom plate, a through hole adapted to the fixed cylinder at the top of the protective cover, and heat dissipation holes on its outer surface.

[0008] Preferably, the reinforcing rib is a steel plate structure, with its two sides welded and fixed to the vertical plate and horizontal plate of the L-shaped connecting plate, respectively, and the thickness of the reinforcing rib is consistent with the thickness of the plate of the L-shaped connecting plate.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The lifting device for hydraulic supports uses a transmission design of a first servo motor and a gear ring to drive a rotating block to rotate a fixed cylinder horizontally. This allows the lifting plate to be flexibly adjusted in position according to the actual needs of the hydraulic support without manual adjustment. This avoids the problem of repeated disassembly and assembly due to angle limitations in traditional devices, effectively improving the convenience and efficiency of downhole operations.

[0010] The lifting device for the hydraulic support uses a threaded transmission structure between the second servo motor and the first threaded rod, along with a guide design of the slide groove and the first slider, to ensure that the lifting rod is stable and without deviation when it is raised and lowered vertically. This structure can precisely control the lifting height, keeping the hydraulic support stable during the lifting process, while reducing frictional wear between components and enhancing the durability of the device.

[0011] This lifting device for hydraulic supports, through adjustable support legs at the corners of the base plate and the cooperation of the second threaded rod and fastening bolts, can independently adjust its height according to the ground conditions. When the device is on an uneven roadway surface, it can quickly level the base plate. Combined with the auxiliary support of the telescopic rod, the device can remain stable even in complex terrain, providing a reliable support foundation for the hydraulic supports. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the protective cover of this utility model; Figure 3 This is the utility model Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the fixed cylinder of this utility model.

[0013] In the diagram: 1. Base plate; 2. Protective cover; 3. L-shaped support plate; 4. First servo motor; 5. Rotating rod; 6. Gear; 7. Gear ring; 8. Rotating block; 9. Fixed cylinder; 10. Battery; 11. Second servo motor; 12. First threaded rod; 13. Lifting rod; 14. First slider; 15. Slide groove; 16. Fixed plate; 17. L-shaped connecting plate; 18. Lifting base plate; 19. Reinforcing rib; 20. Slide rail; 21. Second slider; 22. Telescopic rod; 23. Fixing nut; 24. Second threaded rod; 25. Fastening bolt; 26. Support leg; 27. Rotating plate. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] Example 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a lifting device for a hydraulic support includes a base plate 1 and a protective cover 2 fixed to the surface of the base plate 1. The base plate 1 is a rectangular metal plate, and an L-shaped support plate 3 is fixedly connected to its surface. A first servo motor 4 is detachably connected to the upper end of the L-shaped support plate 3. The output shaft of the first servo motor 4 is detachably connected to a rotating rod 5 via a coupling. The lower end of the rotating rod 5 is rotatably connected to a bearing embedded in the surface of the base plate 1. A gear 6 is fixedly connected to its outer surface, and the gear 6 meshes with a gear ring 7. A rotating block 8 is fixedly connected inside the gear ring 7, and a fixed cylinder 9 is fixedly connected to the upper end of the rotating block 8. The fixed cylinder 9 has a hollow cylindrical structure, and its interior is divided into three layers by a partition. A battery 10 and a second servo motor 11 are respectively installed in two of the layers. The output shaft of the second servo motor 11 is detachably connected to a first threaded rod 1 via a coupling. 2. A lifting rod 13 is threadedly connected to the outer surface of the first threaded rod 12. The first sliders 14 fixedly connected to both sides of the lifting rod 13 are respectively embedded in the sliding grooves 15 opened in the inner wall of the fixed cylinder 9 to form a sliding guide structure to ensure that the lifting rod 13 rises and falls vertically. A fixed plate 16 is welded to the top of the lifting rod 13. An L-shaped connecting plate 17 is fixedly connected to one side of the fixed plate 16. A lifting plate 18 is welded to the lower end of the L-shaped connecting plate 17. A reinforcing rib 19 is welded to the bend. The thickness of the reinforcing rib 19 is the same as that of the L-shaped connecting plate 17 to enhance the structural strength. A connecting slide rail 20 is detachably connected to the upper end of the base plate 1 by bolts. A second slider 21 is slidably connected to the slide rail 20. A telescopic rod 22 is detachably connected to the upper end of the second slider 21 by bolts. The top end of the telescopic rod 22 is fixedly connected to the L-shaped connecting plate 17 for auxiliary support and adjustment of the lifting angle.

[0016] Example 2, as Figure 1 and Figure 2As shown, a lifting device for a hydraulic support has a base plate 1 with fixing nuts 23 welded to the edges and corners. The fixing nuts 23 are internally threaded with a second threaded rod 24. The lower end of the second threaded rod 24 is rotatably connected to a support leg 26 via a bearing. A rotating disk 27 is welded to the top. A fastening bolt 25 is provided at the front end of the fixing nuts 23 to lock the position of the second threaded rod 24.

[0017] It should be noted that this utility model is a lifting device for a hydraulic support. In use, the first servo motor 4 is connected to an external power source, and the second servo motor 11 is powered by the battery 10. When the lifting position needs to be adjusted, the first servo motor 4 is started, and its output shaft drives the rotating rod 5 to rotate through the coupling. The gear 6 on the outer surface of the rotating rod 5 meshes with the gear ring 7, thereby driving the rotating block 8 to drive the fixed cylinder 9 to rotate horizontally, realizing the position adjustment of the lifting plate 18. Then, the second servo motor 11 is started, and its output shaft drives the first threaded rod 12 to rotate through the coupling. The lifting rod 13, which is threaded to the first threaded rod 12, rises vertically under the guidance of the sliding groove 15 on the inner wall of the fixed cylinder 9 and the first slider 14, pushing the fixed plate 16, the L-shaped connecting plate 17 and the lifting plate 18. The device is moved upward to lift the bottom of the hydraulic support. At the same time, when adjusting the lifting position, the second slider 21 on the slide rail 20 moves with the L-shaped connecting plate 17. The top of the telescopic rod 22 abuts against the bottom surface of the lifting plate 18 and maintains the support stability by sliding through the slider. When the device is placed on uneven ground, the locking of the second threaded rod 24 can be released by loosening the fastening bolt 25. The rotating disk 27 drives the second threaded rod 24 to rotate in the fixing nut 23. The extension length of the support leg 26 is adjusted by using the thread transmission. The base plate 1 is kept horizontal by adjusting the support legs 26 at each corner independently. After the adjustment is completed, the fastening bolt 25 is tightened so that it abuts against the second threaded rod 24 by friction to lock the position. This ensures that the four support legs 26 work together to support the base plate 1 on uneven ground, providing a stable working foundation for the device.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting device for a hydraulic support, comprising a base plate (1) and a protective cover (2) fixedly connected to the upper end of the base plate (1), characterized in that: An L-shaped support plate (3) is fixedly connected to the surface of the base plate (1). A first servo motor (4) is detachably connected to the upper end of the L-shaped support plate (3). A rotating rod (5) is detachably connected to the output shaft of the first servo motor (4). A gear (6) is fixedly connected to the outer surface of the rotating rod (5). A gear ring (7) meshes with one side of the gear (6). A rotating block (8) is fixedly connected inside the gear ring (7). A fixed cylinder (9) is fixedly connected to the upper end of the rotating block (8). A battery (10) and a second servo motor (11) are installed inside the fixed cylinder (9). A first threaded rod (12) is detachably connected to the output shaft of the second servo motor (11). A lifting rod is threaded onto the outer surface of the first threaded rod (12). The lifting rod (13) is fixedly connected to the first slider (14) on both sides, and the inner surface of the fixed cylinder (9) is provided with a groove (15) corresponding to the first slider (14). The top of the lifting rod (13) is fixedly connected to the fixed plate (16), and the side of the fixed plate (16) is fixedly connected to the L-shaped connecting plate (17). The bottom plate (18) is fixedly connected to the lower end of the L-shaped connecting plate (17). The bending part of the L-shaped connecting plate (17) is fixedly connected to the reinforcing rib (19). The upper end of the bottom plate (1) is detachably connected to the slide rail (20). The slide rail (20) is slidably connected to the second slider (21), and the upper end of the second slider (21) is detachably connected to the telescopic rod (22).

2. The lifting device for a hydraulic support according to claim 1, characterized in that: The base plate (1) is fixedly connected to the corners of the surface with fixing nuts (23). The fixing nuts (23) are internally threaded with a second threaded rod (24). The front end of the fixing nuts (23) is provided with a fastening bolt (25) for fixing the second threaded rod (24). The lower end of the second threaded rod (24) is rotatably connected with a support leg (26). The top of the second threaded rod (24) is fixedly connected with a rotating disk (27).

3. The lifting device for a hydraulic support according to claim 1, characterized in that: The base plate (1) is detachably fitted with two bearings, and the rotating rod (5) and the rotating block (8) are rotatably connected to the two bearings respectively.

4. A lifting device for a hydraulic support according to claim 1, characterized in that: The protective cover (2) is a metal plate structure. A sealing strip is provided at the connection between its inner wall and the bottom plate (1). The top of the protective cover (2) is provided with a through hole that is compatible with the fixed cylinder (9), and its outer surface is provided with heat dissipation holes.

5. A lifting device for a hydraulic support according to claim 1, characterized in that: The reinforcing rib (19) is a steel plate structure, and its two sides are welded and fixed to the vertical plate and horizontal plate of the L-shaped connecting plate (17) respectively. The thickness of the reinforcing rib (19) is the same as the thickness of the plate of the L-shaped connecting plate (17).

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