Tool for disassembling and assembling bolt

Abstract

The invention relates to the technical field of bolt dismounting and mounting, and discloses a bolt dismounting and mounting tool which comprises a bearing unit, and the bearing unit comprises a mounting assembly, a grip rotationally matched with the mounting assembly, a first connecting rod assembly rotationally arranged in the mounting assembly and a second connecting rod assembly arranged in the first connecting rod assembly; the loosening and tightening unit is arranged above the mounting assembly and is used for screwing the bolt; compared with the prior art, the device has the beneficial effects that through mutual cooperation of the bearing unit and the tightening unit, the device can be placed at the position of a bolt, the bolt can be unscrewed by shifting a handle, then the bolt can be easily taken down manually, and the situation that operation is inconvenient and strenuous in a limited scene can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of bolt assembly and disassembly technology, and in particular to a bolt assembly and disassembly tool. Background Technology

[0002] In current operations, two wrenches are used when tightening or loosening bolts during equipment installation. One wrench is used to secure the bolt, while the other is used to tighten or loosen it. The two wrenches work together to install and remove the bolts. However, this traditional method of operation faces the following problems: the wrenches are prone to slipping off due to terrain limitations, or the nuts may become damaged and slip. Furthermore, the existing tools require the use of both hands, one wrench in each hand, which makes it difficult to implement in certain special scenarios, such as working at height or in confined spaces. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that it is inconvenient to disassemble and assemble bolts in high-altitude operations and confined spaces.

[0004] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a bolt removal and installation tool, which includes a bearing unit, the bearing unit including an installation component, a handle rotatably engaged with the installation component, a first connecting rod assembly rotatably engaged with the installation component, and a second connecting rod assembly disposed in the first connecting rod assembly; a tightening unit is disposed above the installation component and is used to cooperate with the second connecting rod assembly to tighten the bolt.

[0005] In a preferred embodiment of the bolt removal and installation tool of the present invention: the installation assembly includes a mounting base, a mounting plate fixed to the top of the mounting base, and a first fixed shaft, a second fixed shaft, a third fixed shaft, and a fourth fixed shaft fixed to the inner side of the mounting base; The grip rotates on a third fixed axis, and a fifth fixed axis is fixedly connected to the inner cavity of the grip.

[0006] In a preferred embodiment of the bolt removal and installation tool of the present invention: the first connecting rod assembly includes two symmetrically arranged baffles, the baffles being rotatably connected to the outer ring of the fourth fixed shaft, and the movement of the baffles and the handle not interfering with each other.

[0007] In a preferred embodiment of the bolt removal and assembly tool of the present invention: the first connecting rod assembly further includes a first connecting plate and a second connecting plate, one end of the first connecting plate is rotatably engaged with a fifth fixed shaft, the other end of the first connecting plate is rotatably engaged with one end of the second connecting plate, and the other end of the second connecting plate is rotatably engaged with a baffle. A third connecting plate is rotatably connected at the rotatable joint between the first connecting plate and the second connecting plate, and one end of the third connecting plate is rotatably connected to the first fixed shaft.

[0008] In a preferred embodiment of the bolt removal and installation tool of the present invention: the second connecting rod assembly includes a first hinge plate, a second hinge plate rotatably mounted on one end of the first hinge plate, a third hinge plate rotatably mounted on one end of the second hinge plate, and a U-shaped plate rotatably mounted in the first connecting rod assembly via a sixth fixed axis. The second hinge plate is rotatably engaged with the first connecting rod assembly via a rotating shaft, and the third hinge plate is rotatably engaged with the U-shaped plate. One end of the first hinge plate is rotatably engaged with the second fixed shaft, the rotating shaft is fixed between the two baffles, and the sixth fixed shaft is fixed at the end between the two baffles.

[0009] In a preferred embodiment of the bolt removal and installation tool of the present invention: the tightening and loosening unit includes an operating component, two transmission plates symmetrically hinged to one end of the operating component, and a removal and installation component hinged to the two transmission plates, and a cover plate is provided above the removal and installation component.

[0010] In a preferred embodiment of the bolt removal and installation tool of the present invention: the operating component includes a handle, a fixing plate fixed to the end of the handle, a groove formed in the middle of the fixing plate, and a positioning post provided at the end of the fixing plate. The fixing plate has two symmetrical arc-shaped grooves, and the positioning post is rotatably engaged with the mounting plate and the cover plate.

[0011] In a preferred embodiment of the bolt removal and assembly tool of the present invention: a first transmission shaft and a second transmission shaft are respectively rotatably provided at both ends of the transmission plate, and the first transmission shaft is slidably engaged with the arc-shaped groove; The disassembly and assembly assembly includes a housing that rotatably engages with two second drive shafts, a rotating component disposed at the end of the housing, a switching component disposed in the housing, and a pressure spring slidably embedded in the housing. The pressure spring slidably engages with the switching component, and the switching component is used to adjust the following rotation direction of the rotating component.

[0012] In a preferred embodiment of the bolt removal and installation tool of the present invention: a torsion spring is sleeved on the outer ring of the third fixed shaft, and the two ends of the torsion spring are respectively placed on the inner side of the handle and the outer ring of the fourth fixed shaft.

[0013] In a preferred embodiment of the bolt removal and assembly tool of the present invention: a spring component is rotatably provided between the fifth fixed shaft and the baffle; The elastic component includes an outer cylinder, an inner cylinder slidably disposed in the outer cylinder, a telescopic spring disposed inside the outer cylinder, and two rings connected to the two ends of the outer cylinder and the telescopic spring. The two rings are respectively rotatably engaged with the fifth fixed shaft and the baffle. The outer cylinder has multiple vent holes evenly distributed at its tail end. A retaining ring is provided on the outer ring of the outer cylinder at the position of the vent holes, and the retaining ring has ventilation holes corresponding to the number of vent holes.

[0014] The beneficial effects of the present invention are as follows: by the cooperation between the bearing unit and the tightening unit, the device can be placed at the position of the bolt, and the bolt can be loosened by turning the handle. Then the bolt can be easily removed manually, which can effectively avoid the inconvenience and laboriousness of operation in restricted scenarios. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 A schematic diagram of the bolt removal and installation tool is shown; Figure 2 A schematic diagram of the load-bearing unit in the bolt removal and assembly tool is shown; Figure 3 A front sectional view of the load-bearing unit in a bolt removal tool is shown. Figure 4 A schematic diagram of the tightening unit in a bolt removal tool is shown. Figure 5 This diagram shows a partial cross-sectional view of the tightening unit in a bolt removal tool. Figure 6 A cross-sectional structural schematic diagram of the load-bearing unit in a bolt removal and assembly tool is shown; Figure 7 A cross-sectional view of the spring component in a bolt removal and installation tool is shown. Figure 8 A partial cross-sectional view of the spring component in a bolt removal and installation tool is shown. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0018] Reference Figures 1-5This is the first embodiment of the present invention. This embodiment provides a bolt removal and installation tool, which includes a support unit 1. The support unit 1 includes an installation component 11, a handle 12 rotatably engaged with the installation component 11, a first connecting rod assembly 13 rotatably engaged with the installation component 11, and a second connecting rod assembly 14 disposed in the first connecting rod assembly 13; a tightening unit 2 is disposed above the installation component 11 and is used to cooperate with the second connecting rod assembly 14 to tighten the bolt.

[0019] The mounting component 11 serves as a load-bearing element, providing installation conditions for the other components. The handle 12 and the tensioning unit 2 are connected by the first link assembly 13, and together with the second link assembly 14, they can stably fix the device in a suitable position. When the handle 12 is gripped and the tensioning unit 2 is tightened, causing the handle 12 to rotate, the first link assembly 13 will rotate. Under the action of the first link assembly 13, the second link assembly 14 can move directly downward and stably engage with the outside of the bolt, ensuring the normal use of the device.

[0020] Reference Figures 2-4 The second embodiment of the present invention, based on the first embodiment, further includes a mounting assembly 11 comprising a mounting base 111, a mounting plate 112 fixed to the top of the mounting base 111, and a first fixing shaft 113, a second fixing shaft 114, a third fixing shaft 115, and a fourth fixing shaft 116 fixed to the inner side of the mounting base 111; the handle 12 rotates on the third fixing shaft 115, and a fifth fixing shaft 121 is fixedly connected to the inner cavity of the handle 12.

[0021] Mounting base 111 provides the mounting structure, while mounting plate 112 is provided for mounting tensioning unit 2. The end of mounting plate 112 away from handle 12 has a larger opening, while the end closer to handle 12 has a smaller opening. The larger opening is rotatably engaged with rotating member 234 to limit the rotation of rotating member 234, while the smaller opening is rotatably engaged with positioning post 214 to limit the position of positioning post 214.

[0022] The first fixed shaft 113, the second fixed shaft 114, the third fixed shaft 115 and the fourth fixed shaft 116 are set to limit the position of the grip 12 and the first linkage assembly 13. The third fixed shaft 115 is rotatably engaged with the grip 12. When the grip 12 is gripped, the grip 12 will rotate around the third fixed shaft 115.

[0023] Specifically, the first linkage assembly 13 includes two symmetrically arranged baffles 131, which are rotatably connected to the outer ring of the fourth fixed shaft 116. The movement of the baffles 131 and the grip 12 does not interfere with each other.

[0024] Furthermore, the first connecting rod assembly 13 also includes a first connecting plate 132 and a second connecting plate 133. One end of the first connecting plate 132 is rotatably engaged with the fifth fixed shaft 121, the other end of the first connecting plate 132 is rotatably engaged with one end of the second connecting plate 133, and the other end of the second connecting plate 133 is rotatably engaged with the baffle 131. Among them, a third connecting plate 134 is rotatably connected at the rotatable joint of the first connecting plate 132 and the second connecting plate 133, and one end of the third connecting plate 134 is rotatably engaged with the first fixed shaft 113.

[0025] The baffle 131 is symmetrically arranged in the mounting base 111 and rotates with the fourth fixed shaft 116. The baffle 131 is connected to the fifth fixed shaft 121 through the arrangement of the first connecting plate 132 and the second connecting plate 133. When the handle 12 rotates around the third fixed shaft 115, the fifth fixed shaft 121 follows the rotation of the handle 12 and moves closer to the mounting base 111. When the fifth fixed shaft 121 moves closer to the mounting base 111, it will drive the first connecting plate 132 and the second connecting plate 133 to move.

[0026] One end of the third connecting plate 134 is rotatably engaged with the first fixed shaft 113, and the other end is rotatably engaged with the rotatable connection between the first connecting plate 132 and the second connecting plate 133. This is used to control the position of the connection between the first connecting plate 132 and the second connecting plate 133. When the fifth fixed shaft 121 moves towards the mounting base 111, both ends of the first connecting plate 132 rotate around their corresponding positions, and the connection between the first connecting plate 132 and the second connecting plate 133 shifts. At this time, 34 moves from... Figure 3 The tilted state gradually changes to a vertical state. This change causes the rotating connection between the first connecting plate 132 and the second connecting plate 133 to move downward. This allows the baffle 131 to rotate downward around the fourth fixed axis 116 through the action of the second connecting plate 133. When the handle 12 is gripped, the baffle 131 rotates downward, thereby controlling the distance between it and the end with the larger opening of the mounting plate 112, thus clamping the bolts. The tilt state of the third connecting plate 134 can be adjusted according to the actual situation, and no specific limitation is made here. When the third connecting plate 134 is located at the end of the connection between the first connecting plate 132 and the second connecting plate 133, its vertical descent distance can control the size of the opening of the bolt clamping part of the device. The greater the descent distance of the third connecting plate 134, the larger the opening.

[0027] Specifically, the second link assembly 14 includes a first hinge plate 141, a second hinge plate 142 rotatably mounted on one end of the first hinge plate 141, a third hinge plate 143 rotatably mounted on one end of the second hinge plate 142, and a U-shaped plate 145 rotatably mounted in the first link assembly 13 via a sixth fixed shaft 144. The second hinge plate 142 is rotatably engaged with the first link assembly 13 via a rotating shaft 135, and the third hinge plate 143 is rotatably engaged with the U-shaped plate 145. One end of the first hinge plate 141 is rotatably engaged with the second fixed shaft 114, the rotating shaft 135 is fixed between the two baffles 131, and the sixth fixed shaft 144 is fixed at the end between the two baffles 131.

[0028] Through the cooperation of the first hinge plate 141, the second hinge plate 142, the third hinge plate 143, the sixth fixed shaft 144 and the U-shaped plate 145, when the first connecting rod assembly 13 rotates, the linkage between these multiple components ensures that the U-shaped plate 145 can move upward or downward while maintaining a horizontal position.

[0029] One end of the first hinge plate 141 is rotatably engaged with the second fixed shaft 114, and the rotating shaft 135 is fixed between the two baffles 131 and rotatably engaged with the second hinge plate 142. When the baffle 131 rotates around the fourth fixed shaft 116, the position of the rotating shaft 135 moves when the first hinge plate 141 and the second hinge plate 142 are connected. At this time, the second hinge plate 142 will rotate around the rotating shaft 135, and the first hinge plate 141 and the second hinge plate 142 will also rotate.

[0030] During this process, the first hinge plate 141 pulls on one end of the second hinge plate 142, causing the first hinge plate 141 to rotate around the second fixed axis 114, and restricting the rotation of the second hinge plate 142. This allows for pulling on one end of the second hinge plate 142, and... Figure 3 As shown, the first hinge plate 141 is in an inclined state and is connected to the second hinge plate 142 at one end. When the opening of the device is opened, the first hinge plate 141 gradually becomes vertical. The end connected to the second hinge plate 142 will have a displacement in the vertical direction. This displacement also limits the downward movement of the U-shaped plate 145 to maintain a horizontal state. The degree of inclination of the first hinge plate 141 can be set according to the actual situation, and the specific details will not be elaborated.

[0031] The inclination of the first hinge plate 141 must be greater than or equal to the inclination of the third connecting plate 134. This is to ensure that the U-shaped plate 145 remains horizontal when the handle 12 is gripped. If the inclination of the first hinge plate 141 is less than that of the third connecting plate 134, the connection between the first hinge plate 141 and the second hinge plate 142 will reach its lowest point before the rotating end of the third connecting plate 134 and the first connecting plate 132 has reached its lowest point. When the baffle 131 continues to move, the second hinge plate 142 will tilt, which will disrupt the horizontality of the U-shaped plate 145 and cause unstable positioning during use, thus affecting its operation.

[0032] Furthermore, when the sixth fixed shaft 144 moves along with the baffle 131, the U-shaped plate 145 will rotate around the sixth fixed shaft 144 through the cooperation between the third hinge plate 143 and the second hinge plate 142. When the second hinge plate 142 rotates around the rotation shaft 135, the third hinge plate 143 will also rotate with the second hinge plate 142 due to the second hinge plate 142 presenting a certain angle. The end of the third hinge plate 143 that is not connected to the second hinge plate 142 will gradually move closer, thereby ensuring that the U-shaped plate 145 remains horizontal.

[0033] During this process, when the third hinge plate 143 rotates to overlap with a part of the second hinge plate 142, the third connecting plate 134 and the first hinge plate 141 are in a vertical state, or the third connecting plate 134 is in a vertical state.

[0034] Furthermore, the rotation angle of the handle 12 can be limited by adding a limiting block inside the mounting base 111. When the handle 12 abuts against the limiting block, the third connecting plate 134 is in a vertical state, which can further ensure the normal use of the device.

[0035] The U-shaped groove inside the U-shaped plate 145 can be adapted to engage with the head of the bolt or the nut. The U-shaped groove inside can also be V-shaped, and the angle of the V-shape can be adapted to the head of the bolt and the nut. The specific settings can be made according to the actual situation, and it is necessary to ensure that it can engage with the head of the bolt or the nut. The specific dimensions can also be set according to the actual situation, and no specific limitation is made here.

[0036] Reference Figures 4-5 This is the third embodiment of the present invention. Based on the first two embodiments, this embodiment further includes: a tensioning unit 2. The tensioning unit 2 includes an operating component 21, two transmission plates 22 symmetrically hinged to one end of the operating component 21, and a disassembly and assembly component 23 hinged to the two transmission plates 22. A cover plate 24 is provided above the disassembly and assembly component 23.

[0037] The disassembly and assembly component 23 can be engaged with the head nut of the bolt to loosen or tighten it. The transmission plate 22 and the operating component 21 enable the rotation of the disassembly and assembly component 23. When the operating component 21 is turned, the disassembly and assembly component 23 can be rotated around the position of the rotating part 234 by the transmission plate 22.

[0038] Specifically, the operating component 21 includes a handle 211, a fixing plate 212 fixed to the end of the handle 211, a groove 215 opened in the middle of the fixing plate 212, and a positioning post 214 provided at the end of the fixing plate 212. The fixing plate 212 has two symmetrical arc-shaped grooves 213. The positioning post 214 is rotatably engaged with the mounting plate 112 and the cover plate 24.

[0039] The positioning post 214 serves as the pivot of the handle 211. When the handle 211 is rotated, the interaction between the arc groove 213 and the first transmission shaft 221 causes the transmission plate 22 on one side to move, thereby causing the disassembly assembly 23 to rotate around the position of the rotating part 234, thus enabling the operation of loosening or tightening the bolts. According to the lever arm relationship, the distance between the positioning post 214 and the arc groove 213 is relatively close. When using it, based on the lever principle, it is more labor-saving and easier to operate. The center of the arc groove 213 coincides with the central axis of the positioning post 214, ensuring that when the handle 211 is rotated, only one transmission plate 22 is moved.

[0040] Specifically, the two ends of the transmission plate 22 are respectively provided with a first transmission shaft 221 and a second transmission shaft 222, and the first transmission shaft 221 is slidably engaged with the arc-shaped groove 213; The assembly 23 includes a housing 231 that rotatably engages with two second drive shafts 222, a rotating component 234 disposed at the end of the housing 231, a switching component 233 disposed in the housing 231, and a pressure spring 232 that is slidably embedded in the housing 231. The pressure spring 232 slidably engages with the switching component 233, and the switching component 233 is used to adjust the following rotation direction of the rotating component 234.

[0041] The assembly / disassembly component 23 is T-shaped. Its two wider ends are rotatably connected to two transmission plates 22 via a second transmission shaft 222. The rotating component 234 is located at the tail end and rotates with the larger opening of the mounting plate 112. The larger opening limits the rotation of the rotating component 234 without affecting its normal operation. The cover plate 24 is located on the upper part of the assembly / disassembly component 23. One end of the cover plate 24 is connected to the mounting plate 112 via a fixing bolt 241, and the other end is fixed to the positioning post 214 to limit the movement of the assembly / disassembly component 23.

[0042] By using the compression spring 232 and the switching component 233, the rotation of the rotating component 234 can be limited, so that when the disassembly and assembly component 23 is rotated through the transmission plate 22, the bolts can be tightened or loosened. This is existing technology and will not be described in detail here.

[0043] Reference Figure 3 These are four embodiments of the present invention. Based on the above three embodiments, it further includes: a torsion spring 117. Specifically, a torsion spring 117 is fitted around the outer ring of the third fixed shaft 115, with the two ends of the torsion spring 117 placed on the inner side of the grip 12 and the outer ring of the fourth fixed shaft 116, respectively.

[0044] By setting the torsion spring 117, an outward pushing force can be applied to the grip 12, so that when it is clamped in the position of the bolt, the torsion spring 117 can achieve stable clamping. The elastic force of the torsion spring 117 needs to be set according to the specific use and the weight of the device, and is not specifically limited here.

[0045] The torsion spring 117 is sleeved on the outer ring of the third fixed shaft 115. One side of it contacts the inner side of the handle 12, and the other side contacts the fourth fixed shaft 116. When the handle 12 rotates around the third fixed shaft 115, it will compress the torsion spring 117, so that it gives the handle 12 an opening force, ensuring the clamping force at the bolt.

[0046] Reference Figures 6-8 As an optional embodiment, which differs from the fourth embodiment, it further includes: an elastic component 15 rotatably disposed between the fifth fixed shaft 121 and the baffle 131; the elastic component 15 includes an outer cylinder 151, an inner cylinder 152 slidably disposed in the outer cylinder 151, a telescopic spring 153 disposed inside the outer cylinder 151, and two rings 156 connecting the two ends of the outer cylinder 151 and the telescopic spring 153, the two rings 156 respectively rotatably cooperating with the fifth fixed shaft 121 and the baffle 131; a plurality of vent holes 154 are evenly opened at the tail of the outer cylinder 151, and a retaining ring 155 is disposed on the outer ring of the outer cylinder 151 at the position of the vent holes 154, and the retaining ring 155 is provided with vent holes 155c corresponding to the number of vent holes 154.

[0047] An elastic component 15 is provided at the fifth fixed shaft 121 and the first fixed shaft 113. It can generate a thrust between the first fixed shaft 113 and the fifth fixed shaft 121, and has the same function as the torsion spring 117, which can give the grip 12 an opening force.

[0048] The two rings 156 rotate in conjunction with the fifth fixed shaft 121 and the first fixed shaft 113, enabling the device to operate normally. The contraction between the inner cylinder 152 and the outer cylinder 151 compresses the telescopic spring 153, ensuring that a pushing force is generated on the handle 12.

[0049] When the inner cylinder 152 slides inside the outer cylinder 151, the inner cylinder 152 is piston-shaped. When pushed or pulled out, it vents through the vent hole 154 to achieve normal operation. When the retaining ring 155 rotates, it can open and close the vent hole 154, thereby limiting the relative sliding state between the outer cylinder 151 and the inner cylinder 152, and further stabilizing the position of the handle 12.

[0050] Furthermore, a positioning block may be present at the rotation point of the retaining ring 155 and the outer cylinder 151 to limit the rotation angle of the retaining ring 155, thereby enabling the operator to accurately rotate the retaining ring 155 to change the ventilation of the vent 154, while also limiting the rotation of the retaining ring 155 to ensure the normal operation of the device.

[0051] Preferred, such as Figure 8 As shown, the outer cylinder 151 has a slot 151a at the vent 154 position, and the retaining ring 155 has an insert 155a at the corresponding position. A placement groove 155b is provided at the position of the insert 155a, which can hide the insert 155a so that it will not affect the rotation of the retaining ring 155. The insert 155a is elastic. When the insert 155a moves to the slot 151a, it will automatically open and insert into the slot 151a when the retaining ring 155 is rotated. The vent 154 is sealed by the sealing gasket on the inner side of the insert 155a. When the vent 155c rotates to the vent 154 position, air can be allowed to pass through the vent 155c, thus removing the relative restriction between the outer cylinder 151 and the inner cylinder 152.

[0052] The ventilation hole 155c can be opened in the inner ring of the retaining ring 155, and can be in a through state, or it can penetrate the wall thickness of the retaining ring 155, as long as the ventilation hole 154 can be ventilated. There is no specific limitation here. The ventilation capacity can also be adjusted by adjusting the size of the ventilation hole 155c, thereby adjusting the rebound speed of the grip 12. The specific settings can be made according to the actual situation. There is no specific limitation here.

[0053] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A bolt removal and installation tool, characterized in that: include, The support unit (1) includes a mounting assembly (11), a handle (12) rotatably fitted to the mounting assembly (11), a first link assembly (13) rotatably fitted to the mounting assembly (11), and a second link assembly (14) disposed in the first link assembly (13). The tightening unit (2) is located above the mounting assembly (11) and is used to tighten the bolts in conjunction with the second link assembly (14).

2. The bolt removal and assembly tool according to claim 1, characterized in that: The mounting assembly (11) includes a mounting base (111), a mounting plate (112) fixed to the top of the mounting base (111), and a first fixing shaft (113), a second fixing shaft (114), a third fixing shaft (115), and a fourth fixing shaft (116) fixed to the inside of the mounting base (111). The grip (12) rotates on the third fixed shaft (115), and the inner cavity of the grip (12) is fixedly connected to the fifth fixed shaft (121).

3. The bolt removal and assembly tool according to claim 2, characterized in that: The first linkage assembly (13) includes two symmetrically arranged baffles (131), which are rotatably connected to the outer ring of the fourth fixed shaft (116). The movement of the baffles (131) and the handle (12) does not interfere with each other.

4. The bolt removal and installation tool according to claim 3, characterized in that: The first connecting rod assembly (13) further includes a first connecting plate (132) and a second connecting plate (133). One end of the first connecting plate (132) is rotatably engaged with the fifth fixed shaft (121), the other end of the first connecting plate (132) is rotatably engaged with one end of the second connecting plate (133), and the other end of the second connecting plate (133) is rotatably engaged with the baffle (131). Among them, a third connecting plate (134) is rotatably connected at the rotatable joint of the first connecting plate (132) and the second connecting plate (133), and one end of the third connecting plate (134) is rotatably connected to the first fixed shaft (113).

5. The bolt removal and installation tool according to claim 4, characterized in that: The second link assembly (14) includes a first hinge plate (141), a second hinge plate (142) rotatably mounted on one end of the first hinge plate (141), a third hinge plate (143) rotatably mounted on one end of the second hinge plate (142), and a U-shaped plate (145) rotatably mounted in the first link assembly (13) via a sixth fixed shaft (144). The second hinge plate (142) is rotatably engaged with the first link assembly (13) via a rotating shaft (135), and the third hinge plate (143) is rotatably engaged with the U-shaped plate (145). One end of the first hinge plate (141) is rotatably engaged with the second fixed shaft (114), the rotating shaft (135) is fixed between the two baffles (131), and the sixth fixed shaft (144) is fixed at the end between the two baffles (131).

6. The bolt removal and installation tool according to claim 5, characterized in that: The tensioning unit (2) includes an operating component (21), two transmission plates (22) symmetrically hinged to one end of the operating component (21), and a disassembly and assembly component (23) hinged to the two transmission plates (22). A cover plate (24) is provided above the disassembly and assembly component (23).

7. The bolt removal and assembly tool according to claim 6, characterized in that: The operating component (21) includes a handle (211), a fixing plate (212) fixed to the end of the handle (211), a groove (215) opened in the middle of the fixing plate (212), and a positioning post (214) provided at the end of the fixing plate (212). The fixing plate (212) has two arc-shaped grooves (213) symmetrically opened. The positioning post (214) is rotatably engaged with the mounting plate (112) and the cover plate (24).

8. The bolt removal and installation tool according to claim 7, characterized in that: The transmission plate (22) is rotatably provided with a first transmission shaft (221) and a second transmission shaft (222) at both ends, and the first transmission shaft (221) is slidably engaged with the arc groove (213); The disassembly and assembly assembly (23) includes a housing (231) that rotates with two second drive shafts (222), a rotating component (234) disposed at the end of the housing (231), a switching component (233) disposed in the housing (231), and a compression spring (232) that is slidably embedded in the housing (231). The compression spring (232) is slidably engaged with the switching component (233), and the switching component (233) is used to adjust the following rotation direction of the rotating component (234).

9. The bolt removal and assembly tool according to any one of claims 3 to 7, characterized in that: The outer ring of the third fixed shaft (115) is fitted with a torsion spring (117), and the two ends of the torsion spring (117) are respectively placed on the inner side of the handle (12) and the outer ring of the fourth fixed shaft (116).

10. The bolt removal and assembly tool according to any one of claims 3 to 7, characterized in that: A spring assembly (15) is rotatably provided between the fifth fixed shaft (121) and the baffle (131). The elastic component (15) includes an outer cylinder (151), an inner cylinder (152) slidably disposed in the outer cylinder (151), a telescopic spring (153) disposed inside the outer cylinder (151), and two rings (156) connected to the two ends of the outer cylinder (151) and the telescopic spring (153). The two rings (156) are respectively rotatably engaged with the fifth fixed shaft (121) and the baffle (131). The outer cylinder (151) has a plurality of ventilation holes (154) evenly distributed at its tail end. A retaining ring (155) is provided on the outer ring of the outer cylinder (151) at the position of the ventilation hole (154). The retaining ring (155) has ventilation holes (155c) corresponding to the number of ventilation holes (154).

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