A tool for removing threaded bolts in vehicle body structural parts

Abstract

An embodiment of the present application provides a tool for removing a threaded bolt in a vehicle body structural component, the removal tool comprising a rotating structure, a fixing structure and a transmission structure, the rotating structure comprising a sleeve and a rotating rod, the fixing structure comprising a fixing rod, the sleeve being sleeved onto the head of the threaded bolt to fix the bottom of the fixing rod to the structural component on the side of the threaded bolt, by rotating the rotating rod, the sleeve has a normal rotational force on the threaded bolt, when the fixing rod is threadedly connected to the transmission structure, the rotational force of the rotating rod acts on the fixing rod through the transmission structure, the fixing rod and the rotating rod move toward each other axially, the fixing rod moves downward compared to the rotating rod, and when the structural component receives a downward force and the threaded bolt receives a normal rotational force and an axial upward force, the threaded bolt can be loosened and removed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile body structural parts, and in particular to a tool for removing a threaded bolt in a body structural part. Background Art

[0002] In the process of automobile production, the body panels need to be connected and processed by welding, bolting, adhesive bonding, etc. Among them, bolting is the most commonly used method, and the fastening points are all over the body exterior coverings and the inside of the body structure. When bolting, the phenomenon of thread slippage is often encountered (that is, in threaded connectors, the thread connection is worn due to excessive force or other reasons, making the thread unable to bite). For bolt slippage on the surface of the car body, technicians can force the slipped bolts out by welding and hard pulling. The problem of bolt slippage in the body structure is very difficult to deal with. Due to the particularity of the structural design, the installation holes in most of the structural parts are only the size of the bolt head. Once the bolt slippage problem occurs, the removal process is very troublesome, inconvenient to operate, and inefficient.

[0003] In the prior art, the problem of bolt thread slipping is usually dealt with by two people. One person uses a crowbar to reach into the adjacent process hole to pry the bottom of the thread slipping bolt to provide an upward force for the thread slipping bolt, and the other person inserts a sleeve into the head of the thread slipping bolt to loosen the thread slipping bolt and remove it. The method using the prior art has the problem that the process hole is easily deformed when the crowbar is used to support the bolt, thereby causing the hole shape deformation, hole diameter expansion, plate extension and even cracking. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a tool for removing bolts from vehicle body structural parts, which is used to solve the technical problem in the prior art that the process of the pry iron supporting the bolt is prone to cause poor deformation of the process hole, thereby leading to deformation of the hole shape, expansion of the hole diameter, extension of the plate and even cracking.

[0005] To solve the above technical problems, the embodiments of the present invention adopt the following technical solutions:

[0006] A tool for removing bolts inside a vehicle body structure, the removal tool comprising a rotating structure, a fixed structure and a transmission structure, the rotating structure comprising a sleeve and a rotating rod, the lower end of the sleeve being provided with a sleeve connection portion, the sleeve being connected to the first end of the rotating rod, the fixed structure comprising a fixed rod, the transmission structure being connected to the fixed rod and the rotating rod respectively, the fixed rod being threadedly connected to the transmission structure, and the transmission structure being used to move the fixed rod up and down relative to the rotating rod when the rotating rod rotates.

[0007] Furthermore, the fixing structure also includes a connecting member, a first end of the connecting member is connected to a first end of the fixing rod, a second end of the connecting member is inserted into the rotating rod, and the connecting member and the rotating rod can rotate relative to each other.

[0008] Furthermore, the transmission structure includes a bracket and a transmission device, the transmission device is threadedly connected to the fixed rod, the transmission device is fixedly connected to the rotating member, the fixed rod and the rotating rod both pass through the bracket, and the transmission device is placed in the bracket and supports the bracket.

[0009] Furthermore, the transmission device includes a first gear, a second gear and a third gear, the first gear, the second gear and the third gear are placed in a bracket, the second gear is mounted on the bracket, the first gear is mounted on a rotating rod, an internal thread is provided in the third gear, the internal thread is connected to the external thread of the fixed rod, and the second gear meshes with the first gear and the third gear respectively.

[0010] Furthermore, the bracket includes an upper support plate, a mounting shaft, a lower support plate and a mounting piece, the upper support plate and the lower support plate are mounted together through the mounting piece, the rotating rod and the fixed rotatable are mounted on the upper support plate and the lower support plate, the first gear and the third gear are both placed between the upper support plate and the lower support plate, and the second gear is installed between the upper support plate and the lower support plate through the mounting shaft.

[0011] Furthermore, the sleeve and the rotating rod are detachably connected.

[0012] Furthermore, the fixing structure also includes a fixing head, and the fixing head is connected to the second end of the fixing member.

[0013] Furthermore, the fixing head is a top pressing rubber.

[0014] Furthermore, the rotating structure also includes a handle, and the handle is connected to the second end of the rotating rod.

[0015] Furthermore, the sleeve is a C-shaped sleeve with a slot, and the sleeve is connected to the first end of the rotating rod through a thread.

[0016] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0017] The embodiment of the present application provides a tool for removing bolts in a vehicle body structural member, the removing tool comprising a rotating structure, a fixing structure and a transmission structure, the rotating structure comprising a sleeve and a rotating rod, the fixing structure comprising a fixing rod, the sleeve connection portion of the sleeve is sleeved on the head of the sliding bolt, and the bottom of the fixing rod is fixed to the structural member on the side of the sliding bolt. By rotating the rotating rod, the sleeve has a normal rotational force on the sliding bolt. When the fixing rod is threadedly connected to the transmission structure, the rotational force of the rotating rod acts on the fixing rod through the transmission structure, and the fixing rod and the rotating rod move toward each other axially. Compared with the rotating rod, the fixing rod moves downward, and the bottom of the fixing rod generates a force on the front top of the structural member. The structural member causes a reaction force on the fixing rod away from the structural member, so that the rotating rod also has a reaction force away from the structural member. Therefore, in addition to the normal rotational force, the sleeve also adds an axial upward force on the sliding bolt. When the structural member receives the downward force and the sliding bolt receives the normal rotational force and the axial upward force, the sliding bolt can be loosened and removed.

[0018] Compared with the prior art, the embodiments of the present invention do not need to use a crowbar to reach into the process station adjacent to the slide bolt to pry the bottom of the slide bolt to provide an upward force for the slide bolt. Instead, the sleeve only needs to be rotated to provide the slide bolt with a normal rotational force and an axial upward force, so that the slide bolt can be loosened and removed without causing any damage to the process hole on the side of the slide bolt. This solves the technical problem in the prior art that the process hole is easily deformed when the crowbar is used to support the bolt, thereby causing deformation of the hole surface, enlargement of the hole diameter, extension of the plate and even cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a tool for removing bolts from a vehicle body structural component provided by an embodiment of the present invention;

[0021] Figure 2 (a) is a front view of a socket head of a tool for removing bolts from a vehicle body structure provided by an embodiment of the present invention;

[0022] Figure 2 (b) is a left side view of a socket head of a tool for removing bolts from a vehicle body structure provided by an embodiment of the present invention;

[0023] Figure 2 (c) is a bottom view of a socket head of a tool for removing bolts in a vehicle body structure provided by an embodiment of the present invention;

[0024] Figure 3 It is a schematic structural diagram of a rotating rod and a handle of a tool for removing bolts in a vehicle body structure provided by an embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a fixing structure of a bolt removal tool in a vehicle body structural part provided by an embodiment of the present invention;

[0026] Figure 5 It is a structural schematic diagram of a bracket of a tool for removing bolts in a vehicle body structural part provided by an embodiment of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a first gear, a second gear and a third gear of a tool for removing bolts in a vehicle body structure provided by an embodiment of the present invention;

[0028] in:

[0029] 100, rotating structure; 101, handle; 102, rotating rod; 103, sleeve; 200, transmission structure; 201, upper support plate; 202, mounting member; 203, lower support plate; 204, first gear; 205, second gear; 206, third gear; 207, mounting shaft; 300, fixed structure; 301, connecting member; 302, fixed rod; 303, fixed head. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0033] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the actual automobile production process, bolt stripping is a common phenomenon, but in the whole vehicle structure of the automobile, bolt fastening is the most commonly used fastening method, and the positions where bolts are used for fastening are also all over the exterior body coverings and the inside of the body structure. The problem of bolt stripping of the exterior body covering is relatively easy to deal with by welding and hard pulling, but the bolt stripping in the body structure is currently a relatively difficult method to deal with in this field. At present, it is mainly done by two people, one person uses a crowbar to reach into the adjacent process hole to pry the bottom of the stripped bolt to provide an upward force for the stripped bolt, and the other person inserts a sleeve into the head of the stripped bolt, loosens the stripped bolt and then removes it. However, the installation bolt space inside the structural part is limited, and the aperture of the installation hole is small, so only tools of the size of the sleeve can be placed. According to the analysis of the inventor, during the removal process of the stripped bolt, a person needs to manually increase a force of pushing or pulling outward (in the direction of the bolt head) so that the bolt head is forced to rotate after being subjected to the upward force and thus disengages from the nut, so as to complete the removal of the stripped bolt. After the above practice and analysis, the inventors have created a tool for removing bolts from a vehicle body structural component in the following embodiment.

[0035] like Figure 1 As shown, Figure 1 The present invention is a schematic structural diagram of a tool for removing bolts from a vehicle body structural component provided by an embodiment of the present invention.

[0036] An embodiment of the present invention provides a tool for removing bolts inside a vehicle body structure, the removal tool comprising a rotating structure 100, a fixed structure 300 and a transmission structure 200, the rotating structure 100 comprising a sleeve 103 and a rotating rod 102, the lower end of the sleeve is provided with a sleeve portion, the sleeve portion is used to insert the head of a threaded bolt, and can apply a normal force to the head of the threaded bolt when the sleeve rotates, the sleeve 103 is connected to the first end of the rotating rod 102, the fixed structure 300 comprises a fixed rod 302, the transmission structure 200 respectively connects the fixed rod 302 and the rotating rod 102, the fixed rod 302 is threadedly connected to the transmission structure 200, and the transmission structure 200 is used to make the fixed rod 302 move up and down relative to the rotating rod 102 when the rotating rod 102 rotates.

[0037] like Figure 2 As shown, the sleeve 103 can be sleeved on the head of the sliding bolt and drive the sliding bolt to rotate. Specifically, an inner groove is provided inside the sleeve 103, and the inner groove is adapted to the sliding bolt and can be sleeved on the head of the sliding bolt. When rotating, a normal force can be applied to the head of the sliding bolt, wherein the sleeve 103 and the rotating rod 102 are detachably connected. A preferred mode is that the sleeve 103 is connected to the first end of the rotating rod 102 by a thread. A snap connection can also be adopted. Since the sleeve 103 needs to rotate with the rotating rod 102, a snap with a boss or a bevel on the side should be set when setting the snap connection, so that when the rotating rod 102 rotates, the sleeve 103 can be driven to rotate. The sleeve 103 is a C-type sleeve 103 with a slot. The sleeve 103 can be set according to different types of sliding bolts. The C-type sleeve 103 facilitates the sleeve 103 The inner groove is inserted into the sliding bolt. The sleeve 103 may also adopt a tightenable supporting member to clamp the threaded bolt through the tightenable clamping member, which does not need to be replaced and is suitable for removing more different types of threaded bolts.

[0038] The sleeve 103 is sleeved on the head of the sliding bolt, and the fixing rod 302 is fixed on the structural member next to the sliding bolt. By rotating the rotating rod 102, the sleeve 103 rotates with the rotating rod 102. When the sleeve 103 rotates with the rotating rod 102, it will bring a normal force to the sliding bolt. The fixing rod 302 can be fixed to the structural member of the sliding bolt by directly pressing it, or by setting a fixing member at the end of the fixing rod 302, such as a suction cup, or just setting it at a position where the structural member can have a corresponding fixing structure 300, as long as the fixing rod 302 does not rotate around the rotating rod 102 as the center when the rotating rod 102 rotates. When the fixing rod 302 is threadedly connected to the transmission structure 200, the rotational force of the rotating rod 102 acts on the fixing rod 302 through the transmission structure 200, and the fixing rod 302 and the rotating rod 102 move toward each other axially. The fixing rod 302 moves downward compared to the rotating rod, and the bottom of the fixing rod 302 generates a force on the front top of the structural member. The structural member causes a reaction force on the fixing rod 302 away from the structural member, so that the rotating rod 102 also has a reaction force away from the structural member. Therefore, in addition to the normal rotational force, the sleeve 103 also adds an axial upward force to the sliding bolt. When the structural member receives the downward force and the sliding bolt receives the normal rotational force and the axial upward force, the sliding bolt can be loosened and removed.

[0039] The specific structure is:

[0040] like Figure 1-Figure 3 As shown, the removal tool comprises a rotating structure 100, a fixing structure 300 and a transmission structure 200. The rotating structure 100 comprises a sleeve 103, a rotating rod 102 and a handle 101. The sleeve 103 is connected to a first end of the rotating rod 102, and the handle 101 is connected to a second end of the rotating rod 102. The handle 101 can be a variety of types of handles 101, and can directly adopt a T-shaped handle 101, a cross-shaped handle 101, or a steering wheel handle 101. The structure of this embodiment can directly adopt a T-shaped handle 101 for rotation due to the small space in the structural member.

[0041] Figure 4As shown, the fixing structure 300 includes a fixing rod 302, a connecting member 301 and a fixing head 303. The fixing rod 302 is provided with an external thread on its outer circumference. The first end of the connecting member 301 is connected to the first end of the fixing rod 302. The second end of the connecting member 301 is inserted into the rotating rod 102. The connecting member 301 and the rotating rod 102 can rotate relative to each other. The fixing head 303 is connected to the second end of the fixing member. The connecting member 301 can increase the stability of the removal tool provided in this embodiment, and can prevent the fixing rod 302 from rotating. The fixing rod 302 is provided with an external thread. The rotating rod 102 rotates to drive the transmission structure 200 to act on the external thread of the fixing rod 302, so that the fixing rod 302 moves up and down. The fixing head 303 can fix the fixing part on the structural part on the side of the threaded bolt. The fixing head 303 is preferably made of a material with a large contact area with the structural part or a soft contact with the structural part. When the fixing rod 302 applies force to the structural part, the large contact area and soft contact can reduce the damage to the structural part when it directly acts on the structural part. The structural part is preferably made of top pressure glue, which can act on the structural part and make soft contact.

[0042] like Figure 1 , Figure 5 and Figure 6 As shown, the transmission structure 200 includes a bracket and a transmission device, the transmission device is threadedly connected to the fixed rod 302, the transmission device is fixedly connected to the rotating rod 102, the fixed rod 302 and the rotating rod 102 both pass through the bracket, and the transmission device is placed in the bracket and supports the bracket. The transmission device includes a first gear 204, a second gear 205, a third gear 206 and a bracket, the first gear 204, the second gear 205 and the third gear 206 are placed in the bracket, the second gear 205 is installed on the bracket, and the first gear 204 is installed on the rotating rod 102, that is, the rotating rod 102 is fixedly connected to the transmission structure 200. The third gear 206 is provided with an internal thread, and the internal thread is connected to the external thread of the fixed rod 302, that is, the transmission structure 200 is threadedly connected to the fixed rod 302, and the second gear 205 meshes with the first gear 204 and the third gear 206 respectively. The first gear 204 is driven to rotate by the rotating rod 102, and the first gear 204 transmits power to the third gear 206 through the second gear 205, so that the first gear 204 and the third gear 206 have the same direction of rotation, and the bracket is used to rise or fall during the rotation process through the internal thread of the third gear 206 and the external thread of the fixed rod 302. Through this transmission structure 200, the movement between the rotating rod 102 and the fixed rod 302 can be smoother and more stable, and it can be more portable during use.

[0043] like Figure 6 The bracket includes an upper bracket 201, a mounting shaft 207, a lower bracket 203 and a mounting member 202. The upper bracket 201 and the lower bracket 203 are mounted together through the mounting member 202. The rotating rod 102 is rotatably mounted on the upper bracket 201 and the lower bracket 203. The first gear 204 and the third gear 206 are both placed between the upper bracket 201 and the lower bracket 203. The second gear 205 is mounted between the upper bracket 201 and the lower bracket 203 through the mounting shaft 207. The upper bracket, the lower bracket and the mounting member 202 are mounted together to form a support structure of the bracket, and the rigidity of the transmission structure 200 is improved. The mounting member 202 is as many as possible, and the mounting member 202 is a bolt and a nut. The head of the bolt contacts the upper surface of the upper bracket 201, and the nut contacts the lower surface of the lower bracket 203. The upper bracket 201 and the lower bracket 203 are locked by the bolt and the nut. The upper support plate 201 and the lower support plate 203 can also be directly installed together by welding through the mounting member 202. The upper support plate 201 and the lower support plate 203 are both provided with through holes for the rotation rod 102 and the fixed rod 302 to pass through. In order to make the rotation rod 102 rotate more smoothly, bearings can be added to the through holes through which the rotation rod 102 of the upper support plate 201 and the lower support plate 203 passes, or a clearance fit relationship can be directly adopted so that the rotation rod 102 can rotate in the through hole. The fixed rod 302 and the through holes of the upper support plate 201 and the lower support plate 203 only need to directly adopt a clearance fit so that the fixed rod 302 can move up and down compared with the upper support plate 201 and the lower support plate 203. The support plate can also be other structures as long as it can meet the above-mentioned movement.

[0044] Specific working process:

[0045] The sleeve portion of the sleeve 103 is sleeved on the head of the removed threaded bolt, and the bottom of the fixed head 303 of the fixing rod 302 contacts the structural part on the side of the threaded bolt. By rotating the handle 101 counterclockwise, the sleeve 103 rotates synchronously to bring a normal force to the head of the threaded bolt, and at the same time drives the first gear 204 to rotate, the first gear 204 drives the second gear 205 to rotate, and the second gear 205 drives the third gear 206 to rotate. Since the first gear 204 is fixedly mounted on the rotating rod 102, the bracket and the first gear 204 will not move up and down. During the rotation of the third gear 206, the third gear 206 will not move up and down under the action of the bracket. Under the action of the connecting piece 301, the fixing rod 302 does not rotate. When the internal thread in the third gear 206 acts on the external thread of the fixed rod 302, the fixed rod 302 moves downward. During the downward movement of the fixed rod 302, downward pressure is applied to the structural member, and the structural member applies an upward reaction force to the fixed head 303 of the fixed rod 302. This force causes the fixed rod 302, the rotating rod 102 and the sleeve 103 to have an upward force. Since the fixed rod 302 is stationary, the sleeve 103 will exert an upward force on the sliding screw in addition to the normal force. At the same time, the rotating rod 102 and the sleeve 103 both move upward relative to the structural member and the fixed rod 302. The sliding bolt is taken out while receiving the normal force and the upward force.

[0046] The transmission structure 200 provided in this embodiment can also omit the second gear 205 directly, and directly use the first gear 204 and the third gear 206 to mesh with each other. At this time, the first gear 204 and the third gear 206 rotate in opposite directions, that is, when the first gear 204 rotates counterclockwise, the third gear 206 rotates clockwise, that is, at this time, it is necessary to change the direction of the external thread of the fixed rod 302 and the internal thread of the third gear 206, so that when the first gear 204 rotates counterclockwise to loosen the sliding thread, the fixed rod 302 can move up and down under the action of the third gear 206 and the bracket. If other structures are not changed, the purpose of this embodiment can also be achieved.

[0047] Compared with the prior art, the embodiments of the present invention do not need to use a crowbar to reach into the process station adjacent to the slide bolt to pry the bottom of the slide bolt to provide an upward force for the slide bolt. It only needs to rotate the rotating rod 102 to enable the sleeve 103 to provide the slide bolt with a normal rotational force and an axial upward force, so that the slide bolt can be loosened and removed without causing any damage to the process hole on the side of the slide bolt, thereby solving the technical problem in the prior art that the process hole is easily deformed when the crowbar is used to support the bolt, thereby causing deformation of the hole surface, enlargement of the hole diameter, extension of the plate and even cracking.

[0048] Secondly, the method of removing the stripped bolts in the past required two people, but with the removal tool provided in the embodiment of the present invention, it can be completed by only one person, which can well solve the problem of one person operating in a relatively small space and has strong practicality.

[0049] Thirdly, in the prior art, the removal of the stripped bolts requires a complicated prying method, and the average time required to remove the stripped bolts is 13 minutes per bolt, which is extremely inefficient. The removal tool provided by this embodiment has been proven in practice that the average time required to remove the stripped bolts is 30 seconds per bolt, which greatly improves work efficiency and effectively saves time and space.

[0050] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tool for removing threaded bolts in vehicle body structural parts, characterized in that: The removal tool includes a rotating structure, a fixed structure and a transmission structure, the rotating structure includes a sleeve and a rotating rod, the lower end of the sleeve is provided with a sleeve portion, the sleeve is connected to the first end of the rotating rod, the fixed structure includes a fixed rod, the transmission structure is respectively connected to the fixed rod and the rotating rod, the fixed rod is threadedly connected to the transmission structure, and the transmission structure is used to make the fixed rod move up and down relative to the rotating rod when the rotating rod rotates.

2. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 1, characterized in that: The fixing structure further comprises a connecting member, a first end of which is connected to a first end of the fixing rod, a second end of which is sleeved on the rotating rod, and the connecting member and the rotating rod are relatively rotatable.

3. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 2, characterized in that: The transmission structure includes a bracket and a transmission device, the transmission device is threadedly connected to the fixed rod, the transmission device is fixedly connected to the rotating rod, the fixed rod and the rotating rod both pass through the bracket, and the transmission device is placed in the bracket and supports the bracket.

4. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 3, characterized in that: The transmission device includes a first gear, a second gear and a third gear, the first gear, the second gear and the third gear are placed in the bracket, the second gear is installed on the bracket, the first gear is installed on the rotating rod, the third gear is provided with an internal thread, the internal thread is connected to the external thread of the fixed rod, and the second gear is meshed with the first gear and the third gear respectively.

5. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 4, characterized in that: The bracket includes an upper support plate, a mounting shaft, a lower support plate and a mounting member, the upper support plate and the lower support plate are mounted together via the mounting member, the rotating rod and the fixed rod are rotatably mounted on the upper support plate and the lower support plate, the first gear and the third gear are both placed between the upper support plate and the lower support plate, and the second gear is mounted between the upper support plate and the lower support plate via the mounting shaft.

6. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 5, characterized in that: The sleeve and the rotating rod are detachably connected.

7. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 6, characterized in that: The fixing structure also includes a fixing head, and the fixing head is connected to the second end of the fixing rod.

8. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 7, characterized in that: The fixing head is a top pressing rubber.

9. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 8, characterized in that: The rotating structure also includes a handle, and the handle is connected to the second end of the rotating rod.

10. The tool for removing the threaded bolt in the vehicle body structure as claimed in claim 9, characterized in that: The sleeve is connected to the first end of the rotating rod through a thread; the sleeve is a C-shaped sleeve with a slot.

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