A rusted nut removal device

Abstract

The utility model provides a kind of rust nut dismantling device, including pedestal, cutting assembly, driving assembly and connecting rod assembly;Pedestal is equipped with positioning sleeve, and positioning sleeve is equipped with operation port;Cutting assembly includes jack and cutter head, and driving assembly includes screw rod and transmission block.Using, positioning sleeve is sleeved into the nut to be dismantled, rotates screw rod, drives transmission block to move along screw rod axial direction, and the movement of transmission block is converted into the reciprocating linear motion of jack along first direction by connecting rod assembly;Jack drives cutter head to extend into the inside of positioning sleeve via operation port, and the nut is cut.The utility model, without swinging sledge hammer or using open fire, fundamentally avoids the security risks such as tool slipping, spark flying etc.The combination of "screw rod+connecting rod" converts rotary input into linear cutting force, and operator only needs to rotate screw rod to complete cutting operation, which reduces operation difficulty.The axis of screw rod and the movement direction of jack are staggered in space, which reduces the demand for operation space.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tools, specifically to a device for removing rusted nuts. Background Technology

[0002] Nuts are widely used as critical fasteners in industrial production, infrastructure (such as railways and power systems), and equipment maintenance. Many of these nuts operate for extended periods in open-air, high-temperature, high-humidity, or corrosive environments, making them highly susceptible to severe corrosion, seizing, or thread damage due to overload or impact. Disassembling these damaged nuts has become a major challenge in operations.

[0003] Currently, for nuts with slight rust, a special penetrating agent (such as rust remover or loosening agent) can generally be used to soak them, dissolving the rust and oxide layer before removal. However, for nuts with severe rust (such as nuts with severely worn edges), because wrenches cannot effectively engage and are prone to slipping, it is usually necessary to use forceful removal methods. Specific methods mainly include electric welding to melt the rust, gas welding to cut, angle grinder cutting, and using a sledgehammer and chisel to cut the rust. However, these methods all have obvious limitations and are difficult to adapt to complex working conditions: 1) In confined spaces such as underground, inside equipment, or near high-voltage power poles and transformers, sledgehammers cannot be swung effectively, and they are prone to rebound when struck, which may cause sprains to the operator's hands and arms, or even metal shavings flying into the eyes; 2) Electric welding, gas welding and other methods generate open flames and high temperatures. If there are flammable materials such as plastic, rubber, oil, or wires around the nut, the high-temperature welding slag can easily cause a fire. At the same time, the sparks and smoke generated by welding also pose safety hazards; 3) When cutting with an angle grinder, the high-speed flying rust and metal shavings can easily cut the skin or splash into the eyes. In addition, the high-temperature sparks generated during the cutting process also pose a risk of ignition in the presence of flammable materials such as oil and plastic.

[0004] Therefore, there is an urgent need for a rust nut removal device that is highly adaptable to different spaces, safe to operate, causes minimal damage to surrounding components, and poses no open flame or environmental hazards. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the technical defects of existing technologies, such as the limitation of the space for use of sledgehammers and the easy occurrence of personnel injury; and the fact that angle grinders, gas welding, electric welding and other methods are prone to generating high temperature and spatter, posing a fire hazard in flammable environments. Thus, a rust nut removal device with strong space adaptability, safe operation, minimal damage to surrounding parts, no open flame and no environmental hazards is provided.

[0006] Therefore, this utility model provides a device for removing rusted nuts, comprising: The base has a positioning sleeve at its distal end for accommodating a nut to be disassembled; the side wall of the positioning sleeve has a working opening. The cutting assembly includes a push rod slidably disposed on the base along a first direction and a cutter head fixed to the distal end of the push rod. The cutter head is configured to extend into the positioning sleeve through the working port as the push rod slides to perform a cutting operation on the nut. The drive assembly includes a lead screw rotatably supported on the base and a transmission block threadedly engaged with the lead screw; the axial direction of the lead screw intersects with but is not parallel to the direction of movement of the push rod; The linkage assembly includes a first linkage and a second linkage. The first end of the first linkage is hinged to the transmission block, and the second end is drivenly connected to the top rod. The first end of the second linkage is hinged to the rod body of the first linkage, and the second end is hinged to the base. The rotation of the lead screw is configured to drive the transmission block to move along the axial direction of the lead screw, and then the movement is converted into reciprocating linear motion of the push rod along the first direction through the linkage assembly, so that the cutter head performs the cutting operation.

[0007] Furthermore, the base includes two support rods extending along a first direction, the two support rods being arranged in parallel opposite directions, and the distal ends of the two support rods being respectively connected to the positioning sleeve.

[0008] Furthermore, the working opening of the positioning sleeve is located between the two support rods, and the top rod and the cutter head are also located between the two support rods; the top rod and the two support rods are slidably connected through a guide structure.

[0009] Furthermore, the guide structure includes: The guide grooves are a pair, which are opened opposite to each other on the two support rods and extend along the first direction; The first bushing is disposed near the end of the push rod; The guide shaft is rotatably inserted into the first bushing, and both ends are slidably accommodated in the guide groove.

[0010] Furthermore, the second end of the first connecting rod is a U-shaped structure, and hinge holes are provided on both sides of the opening of the U-shaped structure; The first bushing can be inserted into the opening of the U-shaped structure and communicate with the hinge holes on both sides. The guide shaft is rotatably inserted through the hinge holes and the first bushing.

[0011] Furthermore, it also includes: A limiting sleeve is disposed between the two support rods and connected to at least one of the support rods; one end of the lead screw can rotatably pass through the limiting sleeve; A limiting nut is screwed to one end of the lead screw that passes through the limiting sleeve, to prevent one end of the lead screw from coming out of the limiting sleeve.

[0012] Furthermore, a second bushing is provided on the side wall of the limiting sleeve, and the second bushing is hinged to the two support rods through a first hinge shaft.

[0013] Furthermore, it also includes: The first hand crank includes a first rod portion with one end fixedly connected to the other end of the lead screw and a first handle disposed at the other end of the first rod portion, for driving the lead screw 31 to rotate around its own axis under the action of external force.

[0014] Furthermore, the end of the first rod portion away from the lead screw is provided with a first connecting portion, and also includes: The second hand crank includes a second rod and a second grip disposed at one end of the second rod; the other end of the second rod is provided with a second connecting part that matches the first connecting part; the second rod is detachably connected to the first connecting part through the second connecting part, so as to selectively combine with the first rod to extend the lever arm.

[0015] Furthermore, a handle is provided at the proximal end of the base.

[0016] The technical solution provided by this utility model has the following advantages: This utility model discloses a rusted nut removal device, comprising a base, a cutting assembly, a driving assembly, and a connecting rod assembly. The base has a positioning sleeve at its distal end for accommodating the nut to be removed. The side wall of the positioning sleeve has a working opening. The cutting assembly includes a push rod slidably mounted on the base in a first direction and a cutter head fixed to the distal end of the push rod. The cutter head is configured to extend into the positioning sleeve through the working opening as the push rod slides, to perform a cutting operation on the nut. The driving assembly includes a lead screw rotatably supported on the base and a threaded engagement with the lead screw. The transmission block; the axial direction of the lead screw intersects with and is not parallel to the movement direction of the push rod; the linkage assembly includes a first link and a second link, the first end of the first link is hinged to the transmission block, and the second end is drivenly connected to the push rod; the first end of the second link is hinged to the body of the first link, and the second end is hinged to the base; the rotation of the lead screw is configured to drive the transmission block to move along the axial direction of the lead screw, and then the linkage assembly converts the movement into reciprocating linear motion of the push rod along the first direction, so that the cutter head performs a cutting operation.

[0017] In use, the operator holds the device and places the positioning sleeve onto the nut to be removed; the screw is rotated, driving the transmission block to move along the screw axis; the movement of the transmission block is converted into the reciprocating linear motion of the push rod along the first direction through the connecting rod assembly; the push rod drives the cutter head to extend into the positioning sleeve through the working port to cut the nut.

[0018] This utility model discloses a rusted nut removal device, providing a mechanized method for disassembling rusted nuts without the need for sledgehammers or open flames. This fundamentally avoids safety hazards such as tool slippage and sparks, achieving safe and mechanized operation. Through a combination of a lead screw and connecting rod, rotary input is converted into powerful linear cutting force. During cutting, the operator only needs to rotate the lead screw to complete the cutting operation, reducing operational difficulty, improving safety, and increasing cutting efficiency. The axis of the lead screw and the direction of movement of the push rod are spatially staggered, making the device structure extremely compact and greatly reducing the required workspace. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the prior art or specific embodiments of this utility model, the accompanying drawings used in the description of the prior art or specific embodiments are briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the overall structure of the rusted nut removal device of this utility model.

[0021] Figure 2 yes Figure 1 Another stereoscopic view.

[0022] Figure 3 This is a cross-sectional view of the rusted nut removal device of this utility model.

[0023] Figure 4 yes Figure 3 Enlarged structural diagram of part A.

[0024] Figure 5 This is an exploded view of the rust-removing nut device of this utility model.

[0025] Reference numerals: 1. Base; 11. Positioning sleeve; 111. Working port; 112. Guide sleeve; 12. Support rod; 121. Guide groove; 13. Handle; 14. Limiting sleeve; 141. Second bushing; 142. First hinge shaft; 15. Limiting nut; 21. Top rod; 22. Cutting head; 23. Guide shaft; 24. First bushing; 31. Lead screw; 32. Transmission block; 321. Third bushing; 322. Second hinge shaft; 35. First hand crank; 351. First rod part; 352. First grip; 353. First connecting part; 36. Second hand crank; 361. Second rod part; 362. Second grip; 363. Second connecting part; 400. Mounting hole; 41. First connecting rod; 411. Hinge hole; 42. Second connecting rod; 421. Third hinge shaft. Detailed Implementation

[0026] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0027] It should be noted that the terms "first," "second," etc., in the claims and specification of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process, method, system, product, or device that includes a series of steps or units, not limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0028] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0029] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] This embodiment provides a device for removing rusted nuts, such as... Figure 1-5As shown, the assembly includes a base 1, a cutting assembly, a driving assembly, and a connecting rod assembly. The base 1 has a positioning sleeve 11 at its distal end for accommodating a nut to be disassembled. The side wall of the positioning sleeve 11 has a working opening 111. The cutting assembly includes a push rod 21 slidably mounted on the base 1 along a first direction and a cutter head 22 fixed to the distal end of the push rod 21. The cutter head 22 is configured to extend into the positioning sleeve 11 through the working opening 111 as the push rod 21 slides, to perform a cutting operation on the nut. The driving assembly includes a lead screw 31 rotatably supported on the base 1 and a transmission block 32 threadedly engaged with the lead screw 31. The axial direction of the lead screw 31 intersects with but is not parallel to the direction of movement of the top rod 21; the linkage assembly includes a first link 41 and a second link 42, the first end of the first link 41 is hinged to the transmission block 32, and the second end is drivenly connected to the top rod 21; the first end of the second link 42 is hinged to the body of the first link 41, and the second end is hinged to the base 1; the rotation of the lead screw 31 is configured to drive the transmission block 32 to move along the axial direction of the lead screw 31, and then the linkage assembly converts the movement into a reciprocating linear motion of the top rod 21 along the first direction, so that the cutter head 22 performs a cutting operation.

[0031] In this embodiment, the end closer to the operator is designated as the proximal end, and the end farther from the operator is designated as the distal end, with the direction of the line connecting the two being the first direction. The base 1 can be of various shapes, such as rectangular, strip-shaped, elliptical, or frame-like, and the material can be selected as needed, such as high-strength steel or aluminum alloy. A positioning sleeve 11 is provided at the distal end of the base. This positioning sleeve 11 is used to accommodate and enclose the nut to be disassembled during operation, and its size must match the nut to be disassembled. The internal contour of the positioning sleeve 11 preferably matches the shape of the nut to be disassembled, for example, a regular hexagonal hole; or, as a more general design, its inner sidewall opposite the working opening 111 can be a planar structure to better abut against the side of the nut and provide a stable reaction force. The size and position of the working opening 111 are precisely designed to ensure that the impact head can smoothly enter or exit the working opening. The push rod 21 can be a cylindrical or square rod, constrained to only be able to reciprocate linearly along the first direction (i.e., the working direction of the tool). The distal end of the push rod 21 is fixedly mounted with the cutter head 22 by screwing, welding, or integral molding. The end of the cutter head 22 is machined into a sharp wedge or chisel shape to ensure that it can effectively cut into the rusted nut. The lead screw 31 is rotatably supported on the base 1. The transmission block 32 is threadedly connected to the lead screw 31 and can move along the lead screw axis when the lead screw rotates. The first connecting rod 41 is connected to the transmission block 32 and the push rod 21 at both ends, respectively. The first connecting rod 41 forms an effective rotational constraint on the transmission block 32, ensuring that it only moves axially and does not rotate with the lead screw 31 when it rotates. The axis of the lead screw 31 intersects and is not parallel to the direction of movement of the push rod 21. As a preferred embodiment, the axial direction of the lead screw 31 is perpendicular to the first direction.

[0032] In this embodiment of the rusted nut removal device, when in use, the operator holds the device and puts the positioning sleeve 11 onto the nut to be removed; rotates the lead screw 31, driving the transmission block 32 to move axially along the lead screw 31; the movement of the transmission block 32 is converted into the reciprocating linear motion of the push rod 21 along the first direction through the connecting rod assembly; the push rod 21 drives the cutter head 22 to extend into the positioning sleeve 11 through the working port 111 to cut the nut.

[0033] The rusted nut removal device of this embodiment provides a mechanized method for removing rusted nuts, eliminating the need for sledgehammers or open flames, fundamentally avoiding safety hazards such as tool slippage and sparks, and achieving safe mechanized operation. Through the combination of a lead screw and connecting rod, rotary input is converted into powerful linear cutting force. During cutting operations, the operator only needs to rotate the lead screw to complete the cutting operation, reducing operational difficulty, improving safety, and increasing cutting efficiency. The axis of the lead screw and the direction of movement of the push rod are spatially staggered (preferably perpendicular), making the device structure extremely compact and greatly reducing the required workspace.

[0034] In this embodiment of the rusted nut removal device, the base 1 further includes two support rods 12 extending along a first direction. The two support rods 12 are arranged in parallel opposite directions, and the distal ends of the two support rods 12 are respectively connected to the positioning sleeve 11.

[0035] In this embodiment, the connection between the distal ends of the two support rods 12 and the positioning sleeve 11 can be welding, bolting, or other methods. The two support rods provide a stable structure capable of withstanding the forces and torques generated during the cutting operation, while also reducing the overall weight. In this embodiment of the rusted nut removal device, the working port 111 of the positioning sleeve 11 is located between the two support rods 12, and the top rod 21 and the cutter head 22 are also located between the two support rods 12; the top rod 21 and the two support rods 12 are slidably connected through a guide structure.

[0036] In this embodiment, the working opening 111 is located between two support rods 12, and the cutter head 22 and the push rod 21 are also located between the two support rods 12. The push rod 21 is connected to the two support rods 12 through a guide structure (such as a guide groove and a guide shaft) to achieve sliding. Preferably, the central axis of the working opening, the central axis of the cutter head, and the central axis of the push rod coincide, and the two support rods 12 are arranged symmetrically about this axis. This arrangement allows the cutter head 22 to be perpendicular to the center of the nut, ensuring the accuracy of cutting. The guide structure ensures the linear movement of the push rod 21, improving the cutting accuracy.

[0037] The rusted nut removal device of this embodiment, further, such as Figure 1 , 5 As shown, the guide structure includes a guide groove 121, a first bushing 24, and a guide shaft 23; the guide grooves 121 are a pair, which are opened opposite to each other on the two support rods 12 and extend along the first direction; the first bushing 24 is disposed near the top rod 21; the guide shaft 23 is rotatably inserted into the first bushing 24 and its two ends are slidably accommodated in the guide groove 121.

[0038] In this embodiment, a pair of guide grooves 121 are formed opposite to each other on the two support rods 12, extending in a straight line. A first bushing 24 is provided near the end of the push rod 21, and a guide shaft 23 passes through the first bushing 24, with both ends of the guide shaft 23 placed in the guide grooves 121. The guide shaft 23 slides within the guide grooves 121, restricting the lateral movement of the push rod 21 and ensuring that the push rod 21 moves only in a straight line along the first direction. The guide shaft 23 can rotate within the first bushing 24, reducing friction.

[0039] The rusted nut removal device of this embodiment is further as follows: Figure 1-5As shown, the second end of the first connecting rod 41 is a U-shaped structure, and hinge holes 411 are provided on both sides of the opening of the U-shaped structure; the first bushing 24 can be inserted into the opening of the U-shaped structure and communicate with the hinge holes 411 on both sides; the guide shaft 23 is rotatably inserted through the hinge holes 411 and the first bushing 24.

[0040] In this embodiment, the second end of the first connecting rod 41 is U-shaped, with hinge holes 411 on both sides of the opening. The first bushing 24 is inserted into the U-shaped opening, and the guide shaft 23 passes through the hinge holes 411 and the first bushing 24. The U-shaped structure provides a connection point with the top rod 21. The guide shaft 23 serves as both a guide shaft for the top rod 21 and a hinge shaft, enabling a hinge connection between the first connecting rod 41 and the top rod 21. The guide shaft 23 can be assembled, comprising a cylindrical section and a cylindrical section screwed together.

[0041] The rusted nut removal device of this embodiment, further, such as Figure 4 , 5 As shown, it also includes a limiting sleeve 14 and a limiting nut 15; the limiting sleeve 14 is disposed between the two support rods 12 and is connected to at least one of the support rods 12; one end of the lead screw 31 can rotatably pass through the limiting sleeve 14; the limiting nut 15 is screwed to the end of the lead screw 31 that passes through the limiting sleeve 14, for preventing one end of the lead screw 31 from coming out of the limiting sleeve 14.

[0042] In this embodiment, the limiting sleeve 14 is installed between the support rods 12, one end of the lead screw 31 passes through the limiting sleeve 14, and the limiting nut 15 is screwed onto the end of the lead screw 31 that passes through the limiting sleeve 14. The limiting sleeve 14 and the lead screw 31 can rotate relative to each other, and the limiting sleeve 14 will not move along the axial direction of the lead screw as a result. The limiting nut 15 is used to prevent the lead screw 31 from coming out of the limiting sleeve 14.

[0043] The rusted nut removal device of this embodiment, further, such as Figure 3-5 As shown, a second bushing 141 is provided on the side wall of the limiting sleeve 14, and the second bushing 141 is hinged to the two support rods 12 through the first hinge shaft 142.

[0044] In this embodiment, a second bushing 141 is provided on the side wall of the limiting sleeve 14, and the second bushing 141 is hinged to the support rod 12 via a first hinge shaft 142. The hinge design allows the limiting sleeve 14 to swing around the first hinge shaft 142, reducing the stress generated by the lead screw 31 during rotation and lowering the risk of damage. The limiting sleeve 14 and the second bushing 141 allow the lead screw 31 to rotate freely, and also adapt to slight changes in the angle of the lead screw 31 during movement through the hinge point.

[0045] The rusted nut removal device of this embodiment, further, such as Figure 1, 5 As shown, it also includes a first hand crank 35, which includes a first rod portion 351 with one end fixedly connected to the other end of the lead screw 31 and a first grip 352 disposed at the other end of the first rod portion 351, for driving the lead screw 31 to rotate around its own axis under the action of external force.

[0046] In this embodiment, the first hand crank 35 can be an L-shaped structure, with the first rod portion 351 fixedly connected to the lead screw 31, and the first grip 352 located at the end of the first rod portion 351 away from the lead screw. The user applies force to the hand crank by gripping the first grip 352, thereby causing the lead screw 31 to rotate.

[0047] In this embodiment of the rusted nut removal device, the first rod portion 351 is provided with a first connecting portion 353 at one end away from the lead screw 31, and also includes a second hand crank 36. The second hand crank 36 includes a second rod portion 361 and a second grip 362 provided at one end of the second rod portion 361. The other end of the second rod portion 361 is provided with a second connecting portion 363 that matches the first connecting portion 353. The second rod portion 361 is detachably connected to the first connecting portion 353 through the second connecting portion 363, so as to selectively combine with the first rod portion 351 to extend the lever arm.

[0048] In this embodiment, the first connecting part 353 and the second connecting part 363 are detachably connected, for example, by a threaded connection or a pin connection. In one feasible implementation, the first connecting part 353 is a sleeve with internal threads, and the second connecting part 363 is a threaded shaft. When a larger torque is required, the second hand crank 36 is connected to the first hand crank 35, thereby extending the lever arm, increasing the force, and making the lead screw 31 easier to rotate.

[0049] The rusted nut removal device of this embodiment, further, such as Figure 1 , 5 As shown, a handle 13 is provided at the proximal end of the base 1.

[0050] In this embodiment, the handle 13 can be an ergonomic structure attached to the proximal end of the base 1. The handle provides the operator with a gripping position, facilitating the handling and operation of the entire device.

[0051] In this embodiment of the rust nut removal device, the transmission block 32 is further provided with a third bushing 321, and the first end of the first connecting rod 41 is also provided with a U-shaped structure (similar to the second end of the first connecting rod 41). The third bushing 321 can be inserted into the above-mentioned U-shaped structure and is hinged to it through the second hinge shaft 322.

[0052] In this embodiment of the rust nut removal device, the first connecting rod 41 has a mounting hole 400 on its body, and the first end of the second connecting rod 42 can be inserted into the mounting hole 400 and is hinged to it through the third hinge shaft 421.

[0053] In this embodiment of the rust nut removal device, the outer wall of the positioning sleeve 11 is also provided with a guide sleeve 112 surrounding the working port 111, which is used to provide auxiliary guidance for the push rod 21 and the cutter head 22.

[0054] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this innovative technical solution.

Claims

1. A device for removing rusted nuts, characterized in that, include: The base (1) has a positioning sleeve (11) at its far end for accommodating the nut to be disassembled; the side wall of the positioning sleeve (11) is provided with a working opening (111). The cutting assembly includes a push rod (21) slidably disposed on the base (1) in a first direction and a cutter head (22) fixed to the distal end of the push rod (21). The cutter head (22) is configured to extend into the positioning sleeve (11) through the working port (111) as the push rod (21) slides, so as to perform a cutting operation on the nut. The drive assembly includes a lead screw (31) rotatably supported on the base (1) and a transmission block (32) threadedly engaged with the lead screw (31); the axial direction of the lead screw (31) intersects with and is not parallel to the direction of movement of the push rod (21); The linkage assembly includes a first link (41) and a second link (42). The first end of the first link (41) is hinged to the transmission block (32), and the second end is driven to the top rod (21). The first end of the second link (42) is hinged to the rod body of the first link (41), and the second end is hinged to the base (1). The rotation of the lead screw (31) is configured to drive the transmission block (32) to move along the axial direction of the lead screw (31), and then the movement is converted into the reciprocating linear motion of the top rod (21) along the first direction by the connecting rod assembly, so that the cutter head (22) performs the cutting operation.

2. The rust-resistant nut removal device according to claim 1, characterized in that, The base (1) includes two support rods (12) extending along a first direction. The two support rods (12) are arranged in parallel opposite directions, and the far ends of the two support rods (12) are respectively connected to the positioning sleeve (11).

3. The rust-resistant nut removal device according to claim 2, characterized in that, The working port (111) of the positioning sleeve (11) is located between the two support rods (12), and the top rod (21) and the cutter head (22) are also located between the two support rods (12); the top rod (21) and the two support rods (12) are slidably connected through a guide structure.

4. The rust-resistant nut removal device according to claim 3, characterized in that, The guiding structure includes: The guide grooves (121) are a pair, which are opened opposite to each other on the two support rods (12) and extend along the first direction; The first bushing (24) is disposed near the end of the top rod (21); The guide shaft (23) is rotatably inserted into the first bushing (24), and both ends are slidably accommodated in the guide groove (121).

5. The rust-resistant nut removal device according to claim 4, characterized in that, The second end of the first connecting rod (41) is a U-shaped structure, and the two sides of the opening of the U-shaped structure are provided with hinge holes (411). The first bushing (24) can be inserted into the opening of the U-shaped structure and communicate with the hinge holes (411) on both sides. The guide shaft (23) is rotatably inserted into the hinge holes (411) and the first bushing (24).

6. The rust-resistant nut removal device according to claim 5, characterized in that, Also includes: A limiting sleeve (14) is disposed between the two support rods (12) and connected to at least one of the support rods (12); one end of the lead screw (31) can rotatably pass through the limiting sleeve (14). A limiting nut (15) is screwed to one end of the lead screw (31) that passes through the limiting sleeve (14) to prevent one end of the lead screw (31) from coming out of the limiting sleeve (14).

7. The rust-resistant nut removal device according to claim 6, characterized in that, The limiting sleeve (14) has a second bushing (141) on its side wall. The second bushing (141) is hinged to the two support rods (12) through a first hinge shaft (142).

8. The rust-resistant nut removal device according to claim 7, characterized in that, Also includes: The first hand crank (35) includes a first rod (351) with one end fixedly connected to the other end of the lead screw (31) and a first grip (352) disposed at the other end of the first rod (351), for driving the lead screw (31) to rotate around its own axis under the action of external force.

9. The rust-resistant nut removal device according to claim 8, characterized in that, The first rod portion (351) has a first connecting portion (353) at the end away from the lead screw (31), and also includes: The second hand crank (36) includes a second rod portion (361) and a second grip (362) disposed at one end of the second rod portion (361); the other end of the second rod portion (361) is provided with a second connecting portion (363) that matches the first connecting portion (353); the second rod portion (361) is detachably connected to the first connecting portion (353) through the second connecting portion (363) to selectively combine with the first rod portion (351) to extend the lever arm.

10. The rust-resistant nut removal device according to claim 1, characterized in that, A handle (13) is provided at the proximal end of the base (1).

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