A railway attachment nut removal tool

Abstract

The application relates to a railway accessory nut removal tool. The railway accessory nut removal tool comprises a main body shell, a limiting adjustment assembly and a top rod rotary cutter. The main body shell is provided with a fixed end and a guide hole, the fixed end is used for mounting the limiting adjustment assembly, and the guide hole provides a moving channel for the top rod rotary cutter; the adjusting part of the limiting adjustment assembly is fixed to the fixed end of the main body shell, the limiting strip connected at both ends can be contracted or expanded towards the adjusting part, a limiting space is formed between the adjusting part and the limiting strip, and the alignment hole on the adjusting part is in communication with the guide hole and the limiting space; the rod body of the top rod rotary cutter passes through the guide hole, the cutter head end extends into the limiting space through the alignment hole, the rotating end is exposed outside the guide hole and can be driven to move axially along the guide hole by external force. The adjustability of the limiting adjustment assembly and the directional movement of the top rod rotary cutter are combined, the removal requirements of nuts of different specifications are met, and the stability and operation efficiency in the removal process are ensured through the rigid connection and guide constraint between structures.

Description

Technical Field

[0001] This application relates to the field of railway maintenance tools, and in particular to a railway auxiliary nut removal tool. Background Technology

[0002] The railway environment is complex and variable, often resulting in severe corrosion of rails and related components, especially rail clamp bolts, nuts, and riser bolts. When rust is severe, bolts and nuts may become stuck and unable to be tightened, or they may slip and disengage, significantly impacting track maintenance efficiency. Furthermore, rusted bolts and nuts lose their binding force on the rails, posing safety hazards and requiring immediate replacement. However, the bolts and nuts used on railways are large and vary in size, making ordinary nut-breaking tools unsuitable. Currently, there is a lack of specialized tools for breaking rusted railway nuts. Therefore, there is an urgent need for an efficient tool for breaking rusted nuts on railway rail clamps and other parts. Utility Model Content

[0003] Therefore, it is necessary to provide a tool for removing railway auxiliary nuts to address the problem of nuts becoming stuck and difficult to remove due to corrosion of railway rail parts.

[0004] A tool for removing railway auxiliary nuts includes:

[0005] The main body shell includes a fixed end and a guide hole;

[0006] The limit adjustment assembly includes an adjustment part and a limit strip. The adjustment part is located at the fixed end, and the two ends of the limit strip are connected to the adjustment part. The limit strip can contract and expand towards the adjustment part, forming a limit space between the limit strip and the adjustment part. The limit space is used to insert a nut. The adjustment part is provided with an alignment hole, and the guide hole is connected to the limit space through the alignment hole.

[0007] The push rod rotary cutter includes a rod body and cutter head ends and rotating ends respectively disposed at both ends of the rod body; the rod body passes through the inside of the guide hole, the cutter head ends are placed in the limiting space, and the rotating ends are placed outside the guide hole; the rod body can move along the length direction of the guide hole.

[0008] In one embodiment, the adjusting part is provided with a mating hole for fixing the limiting strip;

[0009] The limiting strip has adjustment through holes distributed along its length, and at least one mating hole has a threaded hole on its side, which connects to the mating hole; an adjustment nut is provided inside the threaded hole; the adjustment nut is used to pass through the adjustment through hole of the limiting strip in the mating hole.

[0010] In one embodiment, the limiting strip is configured as a spring steel strip.

[0011] In one embodiment, at least a portion of the outer peripheral surface of the rod is provided with a mating section, the surface of the mating section is provided with an external thread surface, and the interior of the guide hole is provided with an internal thread surface that mates with the external thread surface.

[0012] In one embodiment, an extended handle section is provided between the rod and the rotating end, and there is an angle between the length direction of the extended handle section and the length direction of the rod.

[0013] In one embodiment, the diameter of the alignment hole is larger than the diameter of the cutter tip and smaller than the diameter of the rod body.

[0014] In one embodiment, the rod is configured as a hollow tubular structure with a weight-reducing hole inside, the axis of which coincides with the axis of the rod.

[0015] In one embodiment, the cutter head is configured as a tapered cutter head, which is detachably connected to the rod body.

[0016] In one embodiment, the cutting edge cone angle of the tapered cutter head is set to 60°-90°, and the surface of the cutting edge cone angle is provided with a carbide coating.

[0017] In one embodiment, the outer side of the rotating end is provided with anti-slip texture.

[0018] The aforementioned railway-related nut removal tool includes: a main body shell, a limit adjustment assembly, and a push rod cutter. The main body shell has a fixed end and a guide hole. The fixed end is used to install the limit adjustment assembly, and the guide hole provides a movement channel for the push rod cutter. The adjustment part of the limit adjustment assembly is fixed to the fixed end of the main body shell. The limit strips connected at both ends can retract or expand towards the adjustment part, forming a limit space between the adjustment part and the limit strips. The alignment hole on the adjustment part connects the guide hole and the limit space. The rod of the push rod cutter passes through the guide hole, and the cutter head extends into the limit space through the alignment hole. The rotating end protrudes outside the guide hole and can be driven by external force to move axially along the guide hole. The adjustability of the limit adjustment assembly combined with the directional movement of the push rod cutter not only meets the removal needs of nuts of different specifications but also ensures the stability and operational efficiency of the removal process through rigid connections and guiding constraints between structures. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the railway accessory nut removal tool provided in this application.

[0020] Figure 2 A structural schematic diagram of the railway accessory nut removal tool provided in this application from another perspective.

[0021] Figure 3 This is a schematic diagram of the structure of the railway accessory nut removal tool provided in this application after removing the top rod and rotating cutter.

[0022] Figure 4 for Figure 3 A structural diagram from another perspective.

[0023] Figure 5 This is a schematic diagram of the top rod rotary cutter according to an embodiment of this application.

[0024] Icon labels:

[0025] 1000, Main shell; 1001, Guide hole;

[0026] 2000, Limit adjustment assembly; 2001, Adjustment part; 2002, Limit strip; 2003, Alignment hole; 2004, Adjustment through hole; 2005, Adjustment nut;

[0027] 3000, Top rod rotary cutter; 3001, Rod body; 3002, Cutter head end; 3003, Rotating end; 3004, Extension handle section; 3005, Fitting section. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] See Figures 1-5 As shown, Figure 1 This is a structural diagram of the railway accessory nut removal tool provided in this application. Figure 2 This is a structural schematic diagram of the railway accessory nut removal tool provided in this application from another perspective. Figure 3 This is a schematic diagram of the structure of the railway accessory nut removal tool provided in this application after removing the top rod rotary cutter 3000. Figure 4 for Figure 3 Structural diagram from another perspective Figure 5 This is a schematic diagram of the top rod rotary cutter 3000 according to an embodiment of this application. The railway auxiliary nut removal tool shown includes: a main body shell 1000, a limit adjustment assembly 2000, and a top rod rotary cutter 3000. The main body shell 1000 is provided with a fixed end and a guide hole 1001. The fixed end is used to install the limit adjustment assembly 2000, and the guide hole 1001 provides a moving channel for the push rod rotary cutter 3000. The adjustment part 2001 of the limit adjustment assembly 2000 is fixed to the fixed end of the main body shell 1000. The limit strips 2002 connected at both ends can retract or expand towards the adjustment part 2001, forming a limit space between the adjustment part 2001 and the limit strips 2002. The alignment hole 2003 on the adjustment part 2001 connects the guide hole 1001 and the limit space. The rod body 3001 of the push rod rotary cutter 3000 passes through the guide hole 1001, and the cutter head end 3002 extends into the limit space through the alignment hole 2003. The rotating end 3003 is exposed outside the guide hole 1001 and can be driven by external force to move axially along the guide hole 1001.

[0035] In specific operation, the nut to be removed is first placed in the limiting space. The limiting strip 2002 is gradually tightened by the adjusting part 2001, so that the limiting strip 2002 is close to the outer contour of the nut from the circumference. The contraction tension of the limiting strip 2002 restricts the radial movement and rotational freedom of the nut, thus completing the positioning and fixing of the nut. After the limiting strip 2002 is adjusted by the adjusting part 2001 to fit the nut and form a stable constraint, the operator applies force to the rotating end 3003, pushing the top rod cutter 3000 to move along the axis of the guide hole 1001 towards the limiting space. At this time, the cutter head 3002 moves into the limiting space with the rod body 3001 and contacts the nut. Through the rotation or axial pressure of the rotating end 3003, the cutter head 3002 applies a destructive force to the thread or connection part of the nut, thus finally removing the nut. The deformable limiting strip 2002 of the limiting adjustment component 2000 precisely constrains nuts of different sizes within the limiting space, solving the problem of universal nut positioning during dismantling. The interconnected design of the guide hole 1001 and the alignment hole 2003 ensures that the cutter head 3002 of the push rod rotary cutter 3000 can accurately reach the nut position along the preset path, avoiding dismantling failure due to operational deviation. The pre-tightening fixation of the nut by the limiting strip 2002 provides a stable force fulcrum for the push rod rotary cutter 3000, allowing the destructive action of the cutter head 3002 to be concentrated on the nut body, reducing the impact on surrounding components. The cooperation of each component follows the operation process of "positioning - fixing - force dismantling". The adjustability of the limiting strip 2002 combined with the directional movement of the push rod rotary cutter 3000 not only meets the dismantling needs of nuts of different specifications, but also ensures the stability and operational efficiency of the dismantling process through the rigid connection and guiding constraint between structures.

[0036] In some embodiments of this application, mating holes adapted to the width of the limiting strip 2002 are opened at both ends of the adjusting part 2001. The two ends of the limiting strip 2002 are respectively inserted into the mating holes and are symmetrically distributed. Multiple adjusting through holes 2004 are evenly arranged along the length direction of the limiting strip 2002. A threaded hole perpendicular to and connected to the axis of the mating hole is machined on the side of at least one mating hole. After the adjusting nut 2005 with a boss or handle is inserted through the threaded hole into the adjusting through hole 2004 of the limiting strip 2002, when the adjusting nut 2005 is rotated, its boss end can press against the surface of the limiting strip 2002. The limiting strip 2002 is pulled or pushed by the threaded feed motion to achieve contraction or expansion. By adjusting the nut 2005 and adjusting the through hole 2004, the tightness of the limiting strip 2002 can be precisely adjusted for nuts of different specifications. Loosening the adjusting nut 2005 allows the limiting strip 2002 to open and accommodate the nut. Tightening it ensures that the limiting strip 2002 is positioned close to the outer contour of the nut through different hole positions, forming a stable circumferential constraint. This solves the adaptation limitations of traditional fixed-size limiting structures. The rigid connection between the threaded hole and the adjusting nut 2005 forms a mechanical lock, ensuring that the limiting strip 2002 does not loosen during operation. Furthermore, the surface contact between the boss end of the adjusting nut 2005 and the limiting strip 2002 evenly distributes the clamping force, preventing excessive local stress that could lead to deformation or... Fracture resistance enhances structural durability; a single adjusting nut 2005 controls the contraction / opening of the limiting strip 2002, eliminating the need for complex linkage mechanisms. Operators can complete the limit adjustment with one hand, significantly improving work efficiency. The multi-position or oblong hole design of the adjusting through hole 2004 allows the tool to be compatible with various nuts, reducing maintenance costs; the mating hole and guide hole 1001 are connected through the alignment hole 2003. After the limiting strip 2002 is fixed, the central axis of the limiting space automatically aligns with the axis of the guide hole 1001, ensuring that the tip 3002 of the top rod rotary cutter 3000 is precisely aligned with the center of the nut when moving along the guide hole 1001, avoiding force deviation and improving dismantling accuracy and safety.

[0037] In some embodiments of this application, a spring steel strip with high elastic limit and fatigue resistance is selected as the material of the limiting strip 2002. According to the preset range of the limiting space, the spring steel strip is processed into an arc or ring structure so that its two ends can pass through the mating holes of the adjusting part 2001 and be exposed so as to be connected with the adjusting nut 2005. Adjusting through holes 2004 are evenly opened along the length direction of the spring steel strip. The hole spacing is designed according to the size adjustment range of common railway nuts to ensure that when the steel strip contracts or expands, the adjusting through holes 2004 can be aligned with the threaded holes on the side of the adjusting part 2001. By passing the adjusting nut 2005 through the threaded hole and inserting it into the adjusting through hole 2004, the two ends of the spring steel strip are fixed on the adjusting part 2001 to form an elastically deformable limiting space.

[0038] The high strength and elasticity of the spring steel strip enable it to generate uniform circumferential pressure through its own deformation when tightened, closely conforming to the outer contour of the nut and effectively restricting the radial movement and rotation of the nut. Simultaneously, it maintains a stable limiting state without excessive reliance on the tightening force of the adjusting nut 2005, reducing operational intensity. Its elastic reset function automatically opens the limiting space after the nut is removed, facilitating quick removal of the old nut or insertion of the new one, improving work efficiency. The fatigue resistance of the spring steel strip makes it less prone to plastic deformation or breakage under repeated contraction and expansion conditions, significantly extending the tool's service life. Furthermore, when the arc-shaped spring steel strip contacts the arc surface of the nut, it forms a multi-point uniform force constraint state, avoiding the stress concentration problem that may occur with traditional rigid limiting strips 2002. This protects the surrounding components of the nut from damage and ensures that the top rod cutter 3000 obtains a stable force fulcrum during removal, making the destructive action of the cutter head 3002 more precise and efficient, especially suitable for high-frequency, high-intensity nut removal operations in railway scenarios.

[0039] In some embodiments of this application, a mating section is machined on the outer circumferential surface of the rod 3001 in the middle or near the rotating end 3003. The surface of this mating section is formed with an external thread (such as a trapezoidal thread, rectangular thread, or other transmission thread) using a high-precision cutting process. The thread pitch and tooth angle are designed according to the feed speed and load-bearing capacity required by the push rod cutter 3000. Correspondingly, an internal thread surface matching the external thread surface is machined on the inner wall of the guide hole 1001 of the main body shell 1000. The length of the internal thread covers the travel range of the mating section of the rod 3001, ensuring that the external thread and the internal thread always maintain effective engagement when the rod 3001 moves axially along the guide hole 1001. During installation, the external thread section of the rod 3001 is screwed into the internal thread of the guide hole 1001, so that the rotating end 3003 is exposed outside the guide hole 1001. The cutter end 3002 extends into the limiting space through the alignment hole 2003, forming a threaded transmission mechanism.

[0040] By engaging the external and internal thread surfaces, the rotational motion applied by the operator to the rotating end 3003 is converted into the linear feed motion of the rod 3001. Utilizing the high precision characteristics of the threaded drive, the axial movement distance and applied force of the push rod cutter 3000 can be precisely controlled, avoiding displacement deviations or uneven force that may occur when manually pushing the rod 3001. This is particularly suitable for the precise control requirements of the damage location and force during railway nut removal. The self-locking function of the thread pair (if a thread type with self-locking characteristics is used) automatically locks the push rod cutter 3000 after it has moved to the predetermined position, preventing the rod 3001 from retracting due to vibration or reaction force during removal. This ensures that the cutter tip 3002 continuously and stably acts on the nut. At the same time, the rigid connection of the threaded fit enhances the transmission stability between the rod body 3001 and the guide hole 1001, reducing swaying or radial offset, and ensuring that the force direction of the cutter tip 3002 is always consistent with the nut axis, improving the reliability of the removal operation. In addition, the standardized thread design facilitates later maintenance and component replacement, reducing tool maintenance costs. Furthermore, by adjusting the thread lead (pitch), it can flexibly adapt to the feed speed requirements of different removal conditions, ensuring both accuracy and work efficiency. It is especially suitable for nut removal operations in railway scenarios where the requirements for equipment stability and operational safety are extremely high.

[0041] In some embodiments of this application, an extended handle section 3004 is connected to the end of the rod 3001 near the rotating end 3003 via machining (such as forging, welding, or integral molding). The length direction of this handle section forms a preset angle (such as 90°, 120°, etc., designed according to ergonomics or operating space requirements) with the axis of the rod 3001, making the handle section an L-shaped, T-shaped, or bent structure at a specific angle. The surface of the handle section may be provided with anti-slip texture or a rubber coating, and its cross-sectional shape (such as circular or hexagonal) is adapted to the operator's hand grip habits. The length is determined according to the required force torque, ensuring that when the rotating end 3003 is subjected to force, the rotational force can be efficiently transmitted to the rod 3001 through the handle section.

[0042] The angled design changes the direction of force application of the traditional straight handle, allowing operators to apply force in a more comfortable posture (such as vertical or inclined force application) in the confined space around railway equipment, avoiding inconvenience or force deviation caused by space constraints; the extended handle section 3004 increases the rotation radius and uses the lever principle to increase the rotational torque applied to the rod body 3001, generating a greater rotational driving force under the same force conditions, reducing the difficulty of removing high-strength nuts; the non-collinear structural design effectively avoids the axial space limitation of the guide hole 1001, allowing the handle section to extend to the side or upward, especially suitable for scenarios where the nut is close to the rail or other components, improving the applicability of the tool in complex working conditions; in addition, the rigid connection between the handle section and the rod body 3001 ensures the stability of force transmission.

[0043] In some embodiments of this application, a alignment hole 2003 is machined at the center of the end face of the adjusting part 2001 near the guide hole 1001. The diameter of the alignment hole 2003 is larger than the diameter of the cutting end 3002 and smaller than the diameter of the rod body 3001. This ensures that the cutting end 3002 can freely pass through the alignment hole 2003 into the limiting space, while the non-cutting end 3002 portion (fitting section or connecting section) of the rod body 3001 is blocked outside the alignment hole 2003.

[0044] A stepped limiting structure is formed by the diameter difference, which allows the cutter tip 3002 to enter and exit the limiting space without obstruction, while utilizing the characteristic that the diameter of the rod 3001 is larger than that of the alignment hole 2003 to limit the axial movement range of the push rod cutter 3000: when the rod 3001 moves along the guide hole 1001 into the limiting space, the cutter tip 3002 passes through the alignment hole 2003 and contacts the nut, while the body of the rod 3001 is blocked by the edge of the alignment hole 2003, avoiding excessive extension and structural interference; conversely, when the rod 3001 retracts, the cutter tip 3002 can completely retract into the guide hole 1001, ensuring that the retraction / opening operation of the limiting strip 2002 is not affected. This design achieves precise positioning of the working position of the cutter tip 3002, while mechanical limiting prevents component damage and improves operational safety.

[0045] In some embodiments of this application, the rod 3001 is machined from tubular material (such as high-strength aluminum alloy or alloy steel), with the wall thickness maintained to meet structural strength requirements. Weight-reducing holes, coaxial with the rod 3001, are formed inside the rod along its axial direction. The hole diameter is determined based on the diameter of the rod 3001 and the weight-reduction requirements. The weight-reducing holes penetrate the entire length or a portion of the rod 3001, and the hole walls are chamfered to eliminate stress concentration.

[0046] The hollow structure significantly reduces the overall weight of the tool while maintaining the stiffness and torsional strength of the rod, thus reducing operator fatigue during long-term operation.

[0047] In some embodiments of this application, the cutter head 3002 adopts a split design, with the tapered cutter head connected to the front end of the rod body 3001 via a threaded connection, pin positioning, or quick-change clip. The detachable structure allows for the replacement of cutter heads with different cutting edge shapes (e.g., tapered, flat) depending on the nut type (e.g., standard nut, rusted nut), improving tool versatility. The tapered design enables the cutter head 3002 to automatically align with the nut center (using tapered surface guidance), and even if there is a slight offset between the limiting space and the nut, the position can be gradually corrected through tapered surface contact, improving the fault tolerance rate of the removal operation. When the cutter head wears, there is no need to replace the entire push rod rotary cutter 3000; only the cutter head component needs to be disassembled and replaced, reducing maintenance costs and shortening downtime.

[0048] In some embodiments of this application, the cone angle of the tapered cutting edge is in the range of 60°-90° (such as the common 75°), and the angle accuracy (tolerance ±1°) is ensured by CNC grinding. The cutting edge is blunted (R0.2-R0.5mm) to prevent chipping. A cemented carbide layer (such as TiN or TiC coating) is coated on the cutting edge surface using physical vapor deposition (PVD) or chemical vapor deposition (CVD) processes. The coating thickness is 5-10μm, and the microhardness can reach 2000-3000HV.

[0049] In some embodiments of this application, anti-slip textures are processed on the outer circumferential surface of the rotating end 3003. These textures may include knurling (straight or mesh patterns, modulus 0.5-1.0 mm), annular grooves (depth 2-3 mm, spacing 5-10 mm), or injection-molded overlays (such as TPU anti-slip sleeves). The textures are evenly distributed circumferentially, covering more than 80% of the surface area of ​​the gripping area of ​​the rotating end 3003, with a surface roughness Ra ≤ 3.2 μm to enhance friction.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A tool for removing railway auxiliary nuts, characterized in that, The railway accessory nut removal tool includes: The main body shell includes a fixed end and a guide hole; A limiting adjustment assembly includes an adjusting part and a limiting strip; the adjusting part is disposed at the fixed end, and both ends of the limiting strip are connected to the adjusting part; the limiting strip can contract and expand towards the adjusting part, forming a limiting space between the limiting strip and the adjusting part, the limiting space being used to insert a nut; an alignment hole is provided on the adjusting part, and a guide hole communicates with the limiting space through the alignment hole; The push rod rotary cutter includes a rod body and a cutter head end and a rotating end respectively disposed at both ends of the rod body; the rod body passes through the interior of the guide hole, the cutter head end is placed within the limiting space, and the rotating end is placed outside the guide hole; the rod body can move along the length direction of the guide hole.

2. The railway accessory nut removal tool according to claim 1, characterized in that, The adjusting part is provided with a mating hole, which is used to fix the limiting strip; The limiting strip has adjustment through holes distributed along its length direction, and at least one of the mating holes has a threaded hole on its side, which connects to the mating hole; an adjustment nut is provided inside the threaded hole; the adjustment nut is used to pass through the adjustment through hole of the limiting strip in the mating hole.

3. The railway auxiliary nut removal tool according to claim 2, characterized in that, The limiting strip is made of spring steel strip.

4. The railway accessory nut removal tool according to claim 1, characterized in that, At least a portion of the outer circumferential surface of the rod is provided with a mating section, the surface of the mating section is provided with an external thread surface, and the interior of the guide hole is provided with an internal thread surface that mates with the external thread surface.

5. The railway accessory nut removal tool according to claim 1, characterized in that, An extended handle section is provided between the rod body and the rotating end, and there is an angle between the length direction of the extended handle section and the length direction of the rod body.

6. The railway accessory nut removal tool according to claim 1, characterized in that, The diameter of the alignment hole is greater than the diameter of the cutter tip but smaller than the diameter of the rod body.

7. The railway accessory nut removal tool according to claim 1, characterized in that, The rod is configured as a hollow tubular structure with a weight-reducing hole inside, the axis of which coincides with the axis of the rod.

8. The railway accessory nut removal tool according to claim 1, characterized in that, The cutter head is configured as a tapered cutter head, and the tapered cutter head is detachably connected to the rod body.

9. The railway auxiliary nut removal tool according to claim 8, characterized in that, The cone angle of the cutting edge of the tapered cutter head is set to 60°-90°, and the surface of the cone angle is coated with a cemented carbide.

10. The railway accessory nut removal tool according to claim 1, characterized in that, The outer side of the rotating end is provided with anti-slip texture.

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