A special nut disassembly device

By using a motor-driven worm gear meshing and quick-release connector design, the clamping compatibility and automated disassembly problems of traditional special nut disassembly devices are solved, enabling stable clamping and efficient disassembly of nuts of different specifications, thus improving work efficiency and adaptability.

CN224425492UActive Publication Date: 2026-06-30JIANGSU JUNWEI IND INTELLIGENT TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU JUNWEI IND INTELLIGENT TECHNOLOGY CO LTD
Filing Date
2025-08-13
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional special nut disassembly devices lack clamping adaptability and automated disassembly functions, cannot adapt to nuts of different specifications, and the clamping mechanism is fixed and cannot be replaced, resulting in low work efficiency and high labor intensity for operators.

Method used

A special nut removal device was designed, comprising a motor, a transmission disc, a worm gear mechanism, and a quick-release connector. The device achieves multi-size clamping through worm gear meshing, disassembly is driven by the motor, and quick-release connectors enable rapid replacement of the clamping device.

Benefits of technology

It enables stable clamping and efficient disassembly of nuts of different sizes, simplifies the operation of changing clamping devices, improves work efficiency and adaptability, and reduces the labor intensity of operators.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of tool technology and discloses a special nut disassembly device, including a machine body, a motor installed inside the machine body, a transmission disc disposed on the side of the machine body away from the motor, a housing disposed at the end of the transmission disc away from the machine body, a handle fixedly connected to the side of the machine body away from the housing, a base fixedly connected to the side of the housing away from the transmission disc, a clamping block slidably connected to the side of the housing away from the machine body, a detachable transmission component disposed at the end of the transmission disc near the machine body, a slotted disc disposed inside the housing, and a worm gear fixedly connected to the end of the slotted disc away from the base. In this utility model, through the cooperation of couplings, transmission rods, worm gears, worms, slotted discs, and other structures, the rapid disassembly of special nuts of different sizes is achieved, thus improving work efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of tool technology, and in particular to a special nut disassembly device. Background Technology

[0002] Special nuts are fasteners with special structures or functions, often used in scenarios where there are high requirements for connection strength, sealing performance or anti-loosening performance. Their design is often targeted at specific working conditions, such as effectively preventing loosening in a vibrating environment or ensuring a good sealing effect in a high-pressure environment.

[0003] Traditional special nut removal devices typically include a clamping mechanism, a force-applying component, and an operating handle. The clamping mechanism is adapted to the shape of the special nut and achieves stable clamping through a slot. The force-applying component is mostly a lever or sleeve structure, connecting the clamping mechanism and the operating handle. The working principle is that the operating handle drives the force-applying component, and by utilizing the lever principle or torque transmission, external force is applied to the special nut fixed by the clamping mechanism to overcome the friction and locking force between the nut and the bolt, thereby achieving the loosening and removal of the nut. The operation is completed by the transmission and amplification of mechanical force.

[0004] Traditional special nut dismantling devices lack universal compatibility with nuts of different sizes. When faced with nuts of slightly different dimensions, they cannot achieve stable clamping, requiring the replacement of the entire device to continue operation, which greatly reduces work efficiency. At the same time, after loosening the nut, the nut still needs to be manually unscrewed from the bolt, lacking automated unscrewing function, increasing the labor intensity of operators. Especially in continuous operation scenarios, repetitive labor can easily lead to fatigue. More importantly, the clamping mechanism is mostly fixedly connected to the main body of the device, making it impossible to replace different types of clamping devices according to actual needs. When faced with special nuts with special shapes or special clamping requirements, the adaptability is extremely poor, making it difficult to meet diverse dismantling needs. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a special nut disassembly device, which aims to improve the existing technology by providing clamping and adapting to multiple sizes, automated disassembly, and replaceable clamping heads.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A special nut disassembly device includes a body, a motor installed inside the body, a transmission disc on the side of the body away from the motor, a housing at the end of the transmission disc away from the body, a handle fixedly connected to the side of the body away from the housing, a base fixedly connected to the side of the housing away from the transmission disc, a clamping block slidably connected to the side of the housing away from the body, a detachable transmission assembly at the end of the transmission disc near the body, a slotted disc inside the housing, a worm gear fixedly connected to the end of the slotted disc away from the base, a fixing block fixedly connected to the inner wall of the housing, a worm rotatably connected to the fixing block, a nut fixedly connected to the inner wall of the housing, a handle fixedly connected to the worm, a through slot one at the end of the slotted disc near the clamping block, a through slot two at the side of the housing away from the transmission disc, and a slider fixedly connected to the end of the clamping block near the slotted disc.

[0008] As a further description of the above technical solution:

[0009] The detachable transmission assembly includes a coupling installed at the motor output end. A transmission rod is fixedly connected to one end of the coupling near the transmission disc. A quick-release connector is fixedly connected to one end of the transmission disc away from the machine body. A quick-release interface is fixedly connected to one side of the machine housing near the transmission disc. A ball plug is installed at one end of the quick-release connector near the quick-release interface. A socket is provided inside the quick-release interface. A ball is rotatably connected to the inner wall of the quick-release interface. A round hole is opened inside the socket.

[0010] As a further description of the above technical solution:

[0011] The worm gear and the worm are engaged.

[0012] As a further description of the above technical solution:

[0013] The worm gear is rotatably connected inside the nut.

[0014] As a further description of the above technical solution:

[0015] The slider is slidably connected to the slotted plate.

[0016] As a further description of the above technical solution:

[0017] Both the quick-release connector and the transmission rod are connected to the transmission disc.

[0018] As a further description of the above technical solution:

[0019] The bead is rotatably connected inside the circular hole.

[0020] As a further description of the above technical solution:

[0021] The motor output end and the transmission rod are both fixedly connected to the coupling.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the base is aligned with the top of the special nut and fitted together. The handle is rotated, and the worm gear rotates with the thread on the inner wall of the nut. Through the meshing transmission between the worm gear and the worm wheel, the worm wheel and the slotted disc are driven to rotate. The slider moves along the through groove towards the center of the slotted disc, while the clamping block moves along the through groove towards the base until the clamping block clamps the special nut. The handle is then turned off, thus achieving the effect of fixing special nuts of different sizes with the clamping block. It can also quickly switch between working scenarios with various specifications of nuts, ensuring the stability of the clamping, and also facilitating subsequent disassembly operations.

[0024] 2. In this utility model, when the motor is started, the output end of the motor drives the coupling, transmission rod and transmission disc to rotate. Because the quick-release connector and quick-release interface are locked, the housing rotates with the transmission disc, so that the clamping block is driven by the motor to disassemble when clamping. When changing the three-jaw clamping device, the housing is pulled directly to make the quick-release interface disengage from the quick-release connector. At the same time, the protruding part of the ball plug releases the ball, and the ball moves along the spherical surface to approach the round hole until the protruding part disengages from the ball, so as to quickly remove the three-jaw clamping device. The operation is simple and can quickly switch the adapter components, improving the efficiency of work preparation. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a special nut disassembly device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the anatomical structure of a special nut disassembly device proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the three-jaw clamping device of a special nut disassembly device proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the quick-release interface mechanism of a special nut disassembly device proposed in this utility model.

[0029] Legend:

[0030] 1. Body; 2. Transmission disc; 3. Housing; 4. Motor; 5. Handle; 6. Base; 7. Clamping block; 8. Handle; 9. Detachable transmission assembly; 91. Coupling; 92. Transmission rod; 93. Quick-release connector; 94. Quick-release interface; 95. Ball bearing; 96. Ball plug; 97. Socket; 98. Round hole; 10. Worm gear; 11. Worm; 12. Nut; 13. Slotted disc; 14. Through slot one; 15. Through slot two; 16. Fixing block; 17. Slider. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a special nut disassembly device, comprising a body 1, a motor 4 installed inside the body 1, a transmission disc 2 disposed on the side of the body 1 away from the motor 4, a housing 3 disposed on the end of the transmission disc 2 away from the body 1, a handle 5 fixedly connected to the side of the body 1 away from the housing 3, a base 6 fixedly connected to the side of the housing 3 away from the transmission disc 2, a clamping block 7 slidably connected to the side of the housing 3 away from the body 1, a detachable transmission assembly 9 disposed on the end of the transmission disc 2 near the body 1, and a slotted disc 13 disposed inside the housing 3. A worm gear 10 is fixedly connected to the end away from the base 6. A fixing block 16 is fixedly connected to the inner wall of the housing 3. A worm 11 is rotatably connected to the fixing block 16. A nut 12 is fixedly connected to the inner wall of the housing 3. A handle 8 is fixedly connected to the worm 11. A through slot 14 is opened at the end of the slotted plate 13 near the clamping block 7. A through slot 2 15 is opened on the side of the housing 3 away from the transmission disc 2. A slider 17 is fixedly connected to the end of the clamping block 7 near the slotted plate 13. The worm gear 10 and the worm 11 mesh with each other. The worm 11 is rotatably connected inside the nut 12. The slider 17 is slidably connected to the slotted plate 13.

[0033] Specifically, by aligning the base 6 with the top of the special nut and securing it tightly, and then rotating the handle 8, the worm 11 will rotate inside the nut 12 along with the handle 8 due to the threads on the inner wall of the nut 12. The worm 11 and the worm wheel 10 are meshed together, so the rotation of the worm 11 will cause the worm wheel 10 to rotate as well. The worm wheel 10 will then drive the slotted plate 13 to rotate. At this time, the slider 17 will be driven by the slotted plate 13 and will slowly move towards the center of the slotted plate 13 along the first slot 14. At the same time, the slider 17 will also move the clamping block 7 along the second slot 15 towards the base 6. Thanks to the reasonable stroke design of the slot, the spacing of the clamping block 7 can be continuously adjusted within a large range to accurately fit special nuts of different sizes until the clamping block 7 clamps the special nut tightly and the handle 8 is stopped, thus achieving a stable fixation of special nuts of different sizes by the clamping block 7.

[0034] Reference Figures 1-4 The detachable transmission assembly 9 includes a coupling 91, which is installed at the output end of the motor 4. A transmission rod 92 is fixedly connected to one end of the coupling 91 near the transmission disc 2. A quick-release connector 93 is fixedly connected to one end of the transmission disc 2 away from the machine body 1. A quick-release interface 94 is fixedly connected to one side of the machine housing 3 near the transmission disc 2. A ball plug 96 is installed at one end of the quick-release connector 93 near the quick-release interface 94. A socket 97 is provided inside the quick-release interface 94. A ball 95 is rotatably connected to the inner wall of the quick-release interface 94. A round hole 98 is opened inside the socket 97. The quick-release connector 93 and the transmission rod 92 are both rotatably connected to the transmission disc 2 and the ball 95 is rotatably connected inside the round hole 98. The output end of the motor 4 and the transmission rod 92 are both fixedly connected to the coupling 91.

[0035] Specifically, by starting motor 4, the motor output transmits driving force to coupling 91, causing coupling 91 to drive transmission rod 92 to rotate, which in turn drives transmission disc 2 to rotate. Since quick-release connector 93 and quick-release interface 94 are in a locked state, housing 3 can rotate synchronously with transmission disc 2. During this process, clamping block 7, having already clamped the special nut, uses the stable power provided by motor 4 to efficiently disassemble the special nut. The device is designed to fully consider the adaptability requirements of special nuts of different sizes. Clamping block 7 can firmly clamp special nuts of different diameters through a precise adjustment mechanism, achieving stable and reliable clamping for both small precision special nuts and large heavy-duty nuts. The mechanism is fixed to ensure that the special nut will not loosen or shift during the disassembly process driven by motor 4, thus guaranteeing the accuracy and safety of the disassembly operation. When it is necessary to replace the three-jaw clamping device, the operator can directly pull the housing 3 to separate the quick-release interface 94 from the quick-release connector 93. At the same time, the protrusion of the ball plug 96 gradually loosens from the initial state of squeezing the ball 95. The ball 95 begins to move along the spherical surface of the ball plug 96 towards the circular hole 98, while moving away from the quick-release interface 94, until the protrusion of the ball plug 96 is completely separated from the ball 95, thereby successfully completing the disassembly operation of the three-jaw clamping device. This makes the replacement method convenient, improves the versatility and work efficiency of the equipment, and can meet the diverse disassembly needs of special nuts.

[0036] Working principle: First, align the base 6 with the top of the special nut and fit it in place. Rotate the handle 8. The nut 12 has threads on its inner wall, causing the worm 11 to rotate inside the nut 12 under the action of the handle 8. The worm 11 meshes with the worm wheel 10, causing the worm 11 to drive the worm wheel 10 to rotate. The worm wheel 10 then drives the slotted plate 13 to rotate. The slider 17, driven by the slotted plate 13, moves along the first slot 14 toward the center of the slotted plate 13. At the same time, the slider 17 drives the clamping block 7 to move along the second slot 15 toward the base until the clamping block 7 clamps the special nut and the handle 8 is stopped. This achieves the effect of clamping block 7 fixing special nuts of different sizes.

[0037] Secondly, by starting the motor 4, the output end of the motor 4 will drive the coupling 91 to rotate, the coupling 91 will drive the transmission rod 92 to rotate, and the transmission rod 92 will drive the transmission disc 2 to rotate. Since the quick-release connector 93 and quick-release interface 94 are locked and fixed, the housing 3 rotates with the transmission disc 2, so that when clamping the special nut, the motor 4 drives the clamping block 7 to disassemble. If it is necessary to replace the three-jaw clamping device, by directly pulling the housing 3, the quick-release interface 94 disengages from the quick-release connector 93. At the same time, the protrusion of the ball plug 96 starts to loosen from the initial squeezing of the ball 95. The ball 95 moves along the spherical plug of the ball plug 96 and begins to approach the round hole 98 and move away from the quick-release interface 94 until the protrusion of the ball plug 96 disengages from the ball 95, thus removing the three-jaw clamping device.

[0038] 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. A special nut dismounting device comprising a body (1), characterized in that: The machine body (1) is equipped with a motor (4). A transmission disc (2) is provided on the side of the machine body (1) away from the motor (4). A housing (3) is provided on the end of the transmission disc (2) away from the machine body (1). A handle (5) is fixedly connected to the side of the machine body (1) away from the housing (3). A base (6) is fixedly connected to the side of the housing (3) away from the transmission disc (2). A clamping block (7) is slidably connected to the side of the housing (3) away from the machine body (1). A detachable transmission component (9) is provided on the end of the transmission disc (2) near the machine body (1). A slotted disc is provided inside the housing (3). (13) A worm gear (10) is fixedly connected to one end of the slotted disc (13) away from the base (6). A fixing block (16) is fixedly connected to the inner wall of the housing (3). A worm (11) is rotatably connected to the fixing block (16). A nut (12) is fixedly connected to the inner wall of the housing (3). A handle (8) is fixedly connected to the worm (11). A through slot one (14) is opened at one end of the slotted disc (13) near the clamping block (7). A through slot two (15) is opened on one side of the housing (3) away from the transmission disc (2). A slider (17) is fixedly connected to one end of the clamping block (7) near the slotted disc (13).

2. A device for removing a special nut according to claim 1, characterized in that: The detachable transmission assembly (9) includes a coupling (91), which is installed at the output end of the motor (4). A transmission rod (92) is fixedly connected to one end of the coupling (91) near the transmission disc (2). A quick-release connector (93) is fixedly connected to one end of the transmission disc (2) away from the machine body (1). A quick-release interface (94) is fixedly connected to one side of the machine housing (3) near the transmission disc (2). A ball plug (96) is installed at one end of the quick-release connector (93) near the quick-release interface (94). A socket (97) is provided inside the quick-release interface (94). A ball (95) is rotatably connected to the inner wall of the quick-release interface. A round hole (98) is opened inside the socket (97).

3. A device for removing a special nut according to claim 1, characterized in that: The worm gear (10) and the worm (11) mesh with each other.

4. A device for removing a special nut according to claim 1, characterized in that: The worm (11) is rotatably connected inside the nut (12).

5. The device according to claim 1, wherein: The slider (17) is slidably connected to the slotted plate (13).

6. A device for removing a special nut according to claim 2, characterized in that: Both the quick-release connector (93) and the transmission rod (92) are connected to the transmission disc (2).

7. A device for removing a special nut according to claim 2, characterized in that: The bead (95) is rotatably connected inside the hole (98).

8. A device for removing a special nut according to claim 2, characterized in that: The output end of the motor (4) and the transmission rod (92) are both fixedly connected to the coupling (91).