Coal mine machinery dismounting device

Abstract

The utility model discloses a coal mine machinery dismounting device, and belongs to the field of coal mine machinery dismounting, the coal mine machinery dismounting device comprises a mounting seat and a sliding seat, the middle part above the sliding seat is fixedly connected with a first threaded rod, and the interior of the first threaded rod is rotatably connected with a second threaded rod. Three rotating rods penetrate through a bearing, then a second handle is rotated, a moving block drives the rotating rods to be unfolded, an outer protrusion clamps the lower portion of the bearing, a first handle is rotated reversely, a sliding base moves upwards, the device applies force to separate the bearing from the workpiece, and when the bearing outside the workpiece is disassembled, the first handle is rotated, the sliding base moves upwards, and the device is cooperated with a component through a structure to disassemble the bearing. The device can adapt to bearings at different positions, is widely applied to maintenance of coal mine machinery, improves the maintenance flexibility and comprehensiveness, saves the equipment maintenance cost, guarantees stable operation of equipment, and improves the production safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of coal mine machinery dismantling, and more specifically, to a coal mine machinery dismantling device. Background Technology

[0002] In coal mine production operations, the stable operation of coal mining machinery is crucial. As a key component, bearings in the machinery are prone to damage due to long-term exposure to high loads and harsh working environments, such as the dampness, dust, and strong vibrations underground, requiring frequent disassembly, repair, or replacement.

[0003] However, in existing technologies, when disassembling and replacing bearings, a puller is often used to clamp the bearing and then apply an upward lifting force to complete the disassembly. When dealing with bearings embedded inside workpieces, the maintenance work becomes difficult because such bearings are tightly wrapped by the workpiece, making it difficult to find a suitable point of force application on the outside. The lack of an effective force application position makes conventional disassembly tools such as pullers unable to function properly and unable to apply a stable and effective lifting force as they do for ordinary bearings. As a result, the disassembly process of bearings embedded inside workpieces becomes extremely cumbersome, the disassembly efficiency is greatly reduced, and it also places extremely high demands on the technical level and operating experience of maintenance personnel.

[0004] Therefore, a coal mine machinery dismantling device is proposed to address the above problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide a coal mine machinery dismantling device to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A coal mine machinery dismantling device includes a mounting base and a sliding base. A first threaded rod is fixedly connected to the middle of the upper part of the sliding base. A second threaded rod is rotatably connected inside the first threaded rod. A moving block is threadedly connected to the portion of the second threaded rod outside the first threaded rod. Three connecting rods are rotatably connected to the outside of the moving block. The three connecting rods are arranged in an equidistant circular array. A rotating rod is rotatably connected to the end of each of the three connecting rods away from the moving block. All three rotating rods are rotatably connected to the interior of the sliding base.

[0010] Furthermore, the lower ends of the three rotating rods are respectively fixedly connected with an outer protrusion and an inner protrusion, wherein the outer protrusion is larger than the inner protrusion.

[0011] Furthermore, the outer wall of the sliding seat is fixedly connected with three limiting strips, and the lower part of the mounting seat is fixedly connected with three support legs, each of the three support legs having a limiting groove on one side.

[0012] Furthermore, all three limiting strips are slidably connected inside the limiting groove.

[0013] Furthermore, a fixing block is fixedly connected above the mounting base, and a handle is rotatably connected inside the fixing block. The handle is threadedly connected to the outer wall of the threaded rod.

[0014] Furthermore, a second handle is fixedly connected to one end of the second threaded rod located outside the first threaded rod.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] In this solution, when disassembling the internal bearing of a workpiece, the worker quickly places the support leg on the workpiece surface. The mounting base and support leg are securely connected to stabilize the device. The first handle is rotated, allowing the three rotating rods to pass through the bearing. Then, the second handle is rotated, causing the moving block to unfold the rotating rods. The outer protrusion clamps the underside of the bearing. Reversing the rotation of the first handle moves the sliding seat upwards, and the device applies force to separate the bearing from the workpiece. When disassembling the external bearing, the worker rotates the second handle, causing the moving block to move upwards. The rotating rods flexibly approach, and the inner protrusion precisely clamps the underside of the bearing in a confined space. Rotating the first handle moves the sliding seat upwards. The device, relying on the coordinated structure and components, removes the bearing. This device can adapt to bearings in different positions and is widely used in coal mine machinery maintenance, improving maintenance flexibility and comprehensiveness, saving equipment maintenance costs, ensuring stable equipment operation, and improving production safety and reliability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the sliding seat in this utility model;

[0021] Figure 4 For the present utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0022] Explanation of the labels in the diagram:

[0023] 1. Mounting base; 11. Support leg; 12. Limiting groove; 13. Fixing block; 14. Sliding seat; 15. Limiting strip; 16. Threaded rod No. 1; 17. Handle No. 1; 18. Threaded rod No. 2; 19. Moving block; 2. Connecting rod; 21. Rotating rod; 22. Outer protrusion; 23. Inner protrusion; 24. Handle No. 2. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and 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 protection scope of the present utility model.

[0025] 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.

[0026] 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.

[0027] Example 1

[0028] Please see Figure 1-4A coal mine machinery dismantling device includes a mounting base 1 and a sliding base 14. A first threaded rod 16 is fixedly connected to the middle of the upper part of the sliding base 14. A second threaded rod 18 is rotatably connected inside the first threaded rod 16. A moving block 19 is threadedly connected to the part of the second threaded rod 18 located outside the first threaded rod 16. Three connecting rods 2 are rotatably connected to the outside of the moving block 19. The three connecting rods 2 are arranged in an equidistant circular array. A rotating rod 21 is rotatably connected to the end of each of the three connecting rods 2 away from the moving block 19. The three rotating rods 21 are rotatably connected to the inside of the sliding base 14. An outer protrusion 22 and an inner protrusion 23 are fixedly connected to the two sides of the lower end of the three rotating rods 21, respectively. The outer protrusion 22 is larger than the inner protrusion 23.

[0029] In this embodiment, the disassembly of the bearing located inside the workpiece is convenient and efficient. The operator can easily place the support leg 11 on the gear surface. The stable connection between the mounting base 1 and the support leg 11 ensures the stability of the entire device during operation. Rotating the first handle 17 moves the sliding seat 14 downwards. The optimized threaded connection between the first handle 17 and the first threaded rod 16, along with the rotational connection between the high-precision copper bushing bearing inside the fixed block 13 and the first handle 17, makes this operation easy and smooth. The descent speed and position of the sliding seat 14 can be precisely controlled. After all three rotating rods 21 have passed through the bearing, rotating the second handle 24 moves the moving block 19 downwards. Due to the second threaded rod 18... The precisely designed and precise threaded engagement of the moving block 19, along with the robust key connection between the second handle 24 and the second threaded rod 18, effectively transmits torque. Operators can precisely control the displacement of the moving block 19, thereby allowing the three rotating rods 21 to unfold accurately. At this point, the larger outer protrusion 22, thanks to its design advantage, reliably engages under the bearing to be disassembled, providing sufficient support area and force. Then, rotating the first handle 17 in the opposite direction moves the sliding seat 14 upwards, with the support leg 11 pressing against the workpiece surface. As the sliding seat 14 continues to move upwards, the entire device applies force evenly and stably, gradually separating the bearing and workpiece, efficiently completing the disassembly work, and greatly reducing the risk of damage to the bearing and workpiece due to improper operation.

[0030] When the bearing to be disassembled is installed on the outside of the workpiece via the rotating shaft, the device also demonstrates excellent adaptability. The operator turns the second handle 24 to move the moving block 19 upward. During this process, based on the universal joint structure of the moving block 19 which can rotate 360 ​​degrees and the connection design of the three connecting rods 2, as well as the rotational connection method that matches the rotating rod 21 and the sliding seat 14, the three rotating rods 21 can move closer and closer flexibly and precisely. The smaller inner protrusion 23 then plays the characteristic of precise force application, which can accurately clamp the bearing below in a narrow space, avoiding unnecessary impact on other surrounding components. Then, the first handle 17 is turned to move the sliding seat 14 upward. By utilizing the overall stable structure of the device and the precise coordinated operation of each component, the externally installed bearing can be successfully disassembled.

[0031] Example 2

[0032] Please see Figure 1-4 A coal mine machinery dismantling device includes a sliding seat 14 with three limiting strips 15 fixedly connected to its outer wall, a mounting base 1 with three support legs 11 fixedly connected to its lower side, each of the three support legs 11 having a limiting groove 12 on one side, the three limiting strips 15 being slidably connected inside the limiting groove 12, a fixing block 13 fixedly connected to the upper side of the mounting base 1, a first handle 17 being rotatably connected inside the fixing block 13, the first handle 17 being threadedly connected to the outer wall of the first threaded rod 16, and a second handle 24 being fixedly connected to one end of the second threaded rod 18 located outside the first threaded rod 16.

[0033] In this embodiment, three limiting strips 15 firmly connected to the outer wall of the sliding seat 14 are precisely matched with the limiting grooves 12 opened on the support leg 11 below the mounting base 1. The limiting strips 15 are made of wear-resistant steel and are tightly welded to ensure that they will not loosen during long-term use. In actual operation, the operator can make the sliding seat 14 slide smoothly along the limiting grooves 12 according to the bearing position, which greatly reduces the shaking of the device, ensures that the rotating rod 21 is accurately aligned with the bearing, avoids disassembly errors, and improves the reliability and safety of the operation. The fixing block 13 above the mounting base 1 is fixed by a reliable riveting process. The internal high-precision copper bushing bearing is rotatably connected to the first handle 17. The threads of the first handle 17 and the first threaded rod 16 are optimized. When the operator rotates the first handle 17, he can easily and accurately control the raising and lowering of the first threaded rod 16, which facilitates the adjustment of the device height and adapts to the bearing disassembly requirements of different heights, significantly improving the flexibility and efficiency of operation and reducing labor intensity.

[0034] The No. 2 handle 24 at one end of the No. 2 threaded rod 18 is connected by a secure key. When disassembling the bearing, the operator can rotate the No. 2 handle 24 to precisely adjust the position of the moving block 19. For example, when disassembling a bearing located inside the workpiece, the rotating rod 21 can be unfolded and the outer protrusion 22 can be used to clamp the bearing. When disassembling an external bearing, the rotating rod 21 is brought closer and the inner protrusion 23 clamps the bearing. This precise adjustment ensures that the rotating rod 21 acts on the bearing in a timely manner, improving the overall efficiency and quality of the disassembly operation.

[0035] Working principle: The mounting base 1 is placed on a suitable working surface by its three supporting legs 11 to ensure the stability of the device. The limiting grooves 12 on one side of the supporting legs 11 are in corresponding positions with the three limiting strips 15 that are fixedly connected to the outer wall of the sliding base 14, providing guidance for the subsequent movement of the sliding base 14.

[0036] To adjust the overall height of the device to align with the bearing to be disassembled, the operator rotates the first handle 17 inside the fixed block 13 above the mounting base 1. Since the first handle 17 is threaded to the outer wall of the first threaded rod 16, as the first handle 17 rotates, the first threaded rod 16 moves up and down within the fixed block 13. This, in turn, causes the sliding seat 14, which is fixedly connected to it, to slide up and down along the matching track of the limiting strip 15 and the limiting groove 12, thus achieving a preliminary adjustment of the device height and bringing the rotating rod 21 closer to the position of the bearing to be disassembled.

[0037] If the bearing to be disassembled is located inside the workpiece, continue rotating handle 17 to move the sliding seat 14 downwards until all three rotating rods 21 have passed through the internal space of the bearing. During this process, the movement of the sliding seat 14 is precisely constrained by the limiting strip 15 and the limiting groove 12, ensuring that the rotating rods 21 can be accurately aligned with the center of the bearing.

[0038] Rotating the second handle 24, located at one end outside the first threaded rod 16, causes the moving block 19 to move downwards on the second threaded rod 18, as the second handle 24 is fixedly connected to the second threaded rod 18, and the second threaded rod 18 is threadedly connected to the moving block 19. As the moving block 19 moves downwards, it causes the rotating rod 21 to unfold outwards around its rotational connection point with the sliding seat 14. As the rotating rod 21 unfolds, the outer protrusions 22, fixedly connected to both sides of its lower end, gradually approach and engage below the bearing to be disassembled. The large size of the outer protrusions 22 provides a large contact area and force, ensuring stable clamping of the bearing.

[0039] Rotate handle 17 in the reverse direction to move sliding seat 14 upward. At this time, support leg 11 abuts against the surface of workpiece. As sliding seat 14 continues to move upward, the upward force transmitted through rotating rod 21 and outer protrusion 22 will gradually separate the bearing from the workpiece, completing the disassembly of the bearing located inside the workpiece.

[0040] Approaching the rotating rod 21 for external bearings on the workpiece: If the bearing to be disassembled is mounted externally on the workpiece via a rotating shaft, rotating the second handle 24 causes the moving block 19 to move upward on the second threaded rod 18. The upward movement of the moving block 19 drives the rotating rod 21 to gradually approach inward around its rotational connection point with the sliding seat 14 via the connecting rod 2. As the rotating rod 21 gradually approaches, the inner protrusions 23 fixedly connected to both sides of the lower end of the rotating rod 21 will precisely clamp the lower part of the bearing. The relatively small size of the inner protrusions 23 allows them to adapt to narrow spaces and accurately act on the clamping part of the bearing.

[0041] Rotating handle 17 moves sliding seat 14 upward, and the upward force transmitted through rotating rod 21 and inner protrusion 23 removes the bearing from the workpiece. Throughout the entire process, the components work closely together to efficiently complete the disassembly of the coal mine machinery bearing.

[0042] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A coal mine machinery dismantling device, comprising a mounting base (1) and a sliding base (14), characterized in that: A first threaded rod (16) is fixedly connected to the middle of the upper part of the sliding seat (14). A second threaded rod (18) is rotatably connected inside the first threaded rod (16). A moving block (19) is threadedly connected to the part of the second threaded rod (18) outside the first threaded rod (16). Three connecting rods (2) are rotatably connected to the outside of the moving block (19). The three connecting rods (2) are arranged in an equidistant circular array. A rotating rod (21) is rotatably connected to the end of each of the three connecting rods (2) away from the moving block (19). All three rotating rods (21) are rotatably connected to the inside of the sliding seat (14).

2. The coal mine machinery dismantling device according to claim 1, characterized in that: The lower ends of the three rotating rods (21) are respectively fixedly connected with an outer protrusion (22) and an inner protrusion (23), and the outer protrusion (22) is larger than the inner protrusion (23).

3. The coal mine machinery dismantling device according to claim 2, characterized in that: The outer wall of the sliding seat (14) is fixedly connected with three limiting strips (15), and the lower part of the mounting seat (1) is fixedly connected with three support legs (11), and each of the three support legs (11) has a limiting groove (12) on one side.

4. The coal mine machinery dismantling device according to claim 3, characterized in that: All three limiting strips (15) are slidably connected inside the limiting groove (12).

5. A coal mine machinery dismantling device according to claim 4, characterized in that: A fixing block (13) is fixedly connected above the mounting base (1). A handle (17) is rotatably connected inside the fixing block (13). The handle (17) is threadedly connected to the outer wall of the threaded rod (16).

6. A coal mine machinery dismantling device according to claim 1, characterized in that: The second threaded rod (18) is fixedly connected to a second handle (24) at one end outside the first threaded rod (16).

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