Tool for screwing and unscrewing

Abstract

The application relates to the technical field of tooling, and provides a tool for bolt disassembly. The tool is suitable for disassembling mounting bolts on a vehicle component, wherein the mounting bolts are located in mounting through holes on the vehicle component, and the tool comprises a socket, a screwing wrench and a positioning piece. The socket can be inserted into one end of the screwing wrench, and the socket can be driven to rotate in a preset direction by the screwing wrench; the positioning piece can be sleeved on the socket, and the sleeved positioning piece is matched with the mounting through hole, so that the socket is positioned to be combined with the mounting bolt, and the mounting bolt is screwed by the socket. The tool can facilitate the disassembly of the mounting bolts of the vehicle component located in a narrow space, and can improve the work efficiency of the disassembly of the vehicle component.

Description

Technical Field

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

[0002] In vehicles, some components are concealed within the body. While this design offers some protection and minimizes impact on surrounding parts, the space around these concealed components after assembly is often limited. This makes disassembly and replacement of components difficult, particularly removing and installing mounting bolts, significantly reducing work efficiency. Utility Model Content

[0003] In view of this, the present application aims to provide a tool for bolt removal and installation, so as to facilitate the removal of mounting bolts of vehicle parts located in confined spaces, thereby improving the efficiency of vehicle part removal and installation.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows: A tool for bolt removal and installation, suitable for removing mounting bolts on a vehicle component, the mounting bolts being located in mounting through holes on the vehicle component, the tool comprising a bit, a wrench, and a positioning element; The bit can be inserted into one end of the screwdriver, and the screwdriver can drive the bit to rotate in a preset direction. The positioning element can be fitted onto the screwdriver bit, and the fitted positioning element cooperates with the mounting hole to position the screwdriver bit to engage with the mounting bolt, so as to tighten the mounting bolt by means of the screwdriver bit.

[0005] Furthermore, the tightening wrench is a ratchet wrench.

[0006] Furthermore, the orifice of the mounting hole is provided with an arc transition groove, and one end of the sleeved positioning member can be embedded in the arc transition groove, thereby positioning the bit to be combined with the mounting bolt.

[0007] Furthermore, the positioning element is made of rubber.

[0008] Furthermore, the tool includes a lifting component; The lifting component is elongated, and one end of the lifting component is the operating end. When the lifting component is operated through the operating end, the lifting component can drive the screw wrench to rotate through its other end.

[0009] Furthermore, relative to the end where the bit is inserted, the other end of the wrench has a through hole, and the end of the lifting member can be inserted into the through hole and drive the wrench to rotate.

[0010] Furthermore, the lifting component is made of steel wire, with one end of the steel wire bent to one side to form the operating end, and the other end of the steel wire continuously bent to form the hook end; The hook end has a first part perpendicular to the main body of the steel wire, a second part perpendicular to the first part, and a third part perpendicular to the second part, and the third part points to one side of the main body and is used to be inserted into the through hole.

[0011] Furthermore, the tool includes anti-drop components; The anti-drop component is made of soft rope, and one end of the anti-drop component is used to tie the bit or positioning component.

[0012] Compared with related technologies, this application has the following advantages: (1) The tool for bolt removal and installation described in this application allows the bit to be inserted into one end of a wrench. By using the positioning element on the bit and the mounting hole, the bit can be positioned to engage with the mounting bolt. The mounting bolt can then be tightened by the bit. Thus, when removing mounting bolts of vehicle parts located in confined spaces, the positioning element can be used to guide the bit to quickly engage with the mounting bolt without observation. The wrench can then drive the bit to tighten the mounting bolt, thereby increasing the convenience of removing and installing mounting bolts on vehicle parts located in confined spaces and improving the efficiency of vehicle part removal and installation.

[0013] (2) The ratchet wrench is used for tightening. During the tightening of the installation bolt, there is no need to disconnect the bit from the installation bolt. This avoids repeated positioning and engagement of the bit, which helps to further improve the efficiency of vehicle component disassembly and assembly.

[0014] (3) By embedding the positioning element into the arc transition groove at the opening of the mounting hole, the bit is positioned. Compared with allowing the positioning element to directly enter the mounting hole, there is no need to consider the influence of the insertion amount of the positioning element in the mounting hole on the positioning operation, which is conducive to simplifying the design and facilitating the positioning operation of the positioning element.

[0015] (4) The positioning element is made of rubber, which not only makes the positioning element lighter than materials such as metal, making it easier to use, but also makes it easier to put the positioning element on the bit. On the one hand, it can effectively prevent the positioning element from slipping off the bit, which helps to ensure the stability of the positioning element on the bit. On the other hand, it can also allow the bit and the positioning element to slide relative to each other, which can better adapt to the depth of the hole through which it is installed, thus improving the quality of tool use.

[0016] (5) By further setting a long strip-shaped lifting part, one end of the lifting part is the operating end, and when the lifting part is operated through the operating end, the other end of the lifting part can drive the screw wrench to rotate. This not only solves the inconvenience of directly turning the screw wrench by hand in a narrow space with the help of the lifting part, but also helps to avoid burns caused by directly operating the screw wrench by hand in a high-temperature environment. This can improve the convenience and safety of tool use.

[0017] (6) By setting a through hole on the wrench and inserting the end of the lifting part into the through hole to drive the wrench to rotate, it is easy to realize reliable linkage between the lifting part and the wrench, which helps to ensure the use effect of the lifting part.

[0018] (7) Making the lifting part out of steel wire is beneficial to the design and preparation of the lifting part and also helps to reduce the cost of the lifting part. Furthermore, by bending one end of the steel wire to one side to form an operating end, the operating end can be used to apply a manipulating force to the lifting part. It also has the advantages of simple structure and easy molding. By continuously bending the other end of the steel wire into a hook end with a first part, a second part and a third part, the third part can be inserted into the through hole of the wrench, so that the hook end and the wrench can form a good hooking effect. This can better realize the reliable linkage between the lifting part and the wrench, which is conducive to ensuring the use effect of the lifting part.

[0019] (8) By further setting up anti-drop parts made of soft ropes and binding one end of the anti-drop parts to the bit or positioning parts, the dropped tools can be quickly found when the bit or positioning parts fall during the disassembly and assembly process, which can avoid the waste of time caused by the tools falling and help ensure the efficiency of vehicle parts disassembly and assembly. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram illustrating the structure of the bolt removal and installation tool described in the embodiments of this application; Figure 2 This is a schematic diagram of the lifting component described in the embodiments of this application; Figure 3 This is a schematic diagram illustrating the positioning of the bit by a positioning element according to an embodiment of this application; Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle; Explanation of reference numerals in the attached figures: 1. Screwdriver bits; 2. Tightening wrenches; 3. Positioning components; 4. Lifting components; 5. Anti-drop components; 1a. Insertion end; 1b. Mounting rod; 201. Insertion hole; 202. Through hole; 301. Center hole; 41. Main body; 42. Operating end; 43. Hanging end; 431. First part; 432. Second part; 433. Third part; 10. Vehicle component; 20. Mounting bolt; 30. Mounting through hole; 310. Arc transition groove. Detailed Implementation

[0021] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0023] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are 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 on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0025] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0027] An embodiment of the first aspect of this application provides a tool for bolt removal and installation, which is suitable for removing mounting bolts 20 on vehicle components 10. Through this innovative design of the bolt removal and installation tool of this embodiment, it is particularly suitable for removing mounting bolts 20 on vehicle components 10 located in a narrow space in the vehicle, and can also improve the work efficiency of removing and installing vehicle components 10.

[0028] In related technologies, some vehicle components 10 are installed in the vehicle body using a hidden design. This design can provide a certain degree of protection for the vehicle components 10 and also reduce the impact on the arrangement of other surrounding components.

[0029] For example, with the increasing prevalence of electric vehicles, the traditional braking system in gasoline-powered cars, which uses a vacuum booster with a master cylinder reservoir assembly, is beginning to be replaced by an electronically integrated braking control system. An electronically integrated braking control system generally consists of two parts: an ECU (Electronic Control Unit) and a HCU (Hydraulic Control Unit). When a vehicle is undergoing final inspection, if problems such as hard brakes or lack of brake assist occur, and the root cause is difficult to determine, the ECU in the electronically integrated braking control system needs to be replaced.

[0030] At this point, because the ECU in the electronically integrated braking control system is usually installed in the engine compartment with a concealed design, and because of the presence of the engine and many other components, the space inside the engine compartment is very small. Therefore, if traditional disassembly tools are used to remove and install the ECU in the electronically integrated braking control system, not only is it necessary to remove the enclosure, but traditional tools are also not easy to reach the ECU location, making the removal and installation of the mounting bolts 20 on the ECU quite difficult, which will greatly reduce the efficiency of ECU disassembly and installation.

[0031] In view of this, in order to overcome the shortcomings of the related technology, the tool for bolt removal and installation in this embodiment combines... Figures 1 to 4 As shown, in terms of overall design, the mounting bolts 20 that need to be disassembled and assembled are specifically located in the mounting through holes 30 on the vehicle component 10, and the tool includes a bit 1, a wrench 2 and a positioning component 3.

[0032] The bit 1 can be inserted into one end of the wrench 2, and the wrench 2 can drive the bit 1 to rotate in a preset direction.

[0033] The positioning element 3 can be fitted onto the bit 1, and the fitted positioning element 3 cooperates with the mounting hole 30 to position the bit 1 to engage with the mounting bolt 20, and the mounting bolt 20 can be tightened by the bit 1.

[0034] Therefore, by allowing the bit 1 to be inserted into one end of the wrench 2, and by using the positioning element 3 sleeved on the bit 1 to cooperate with the mounting hole 30 on the vehicle component 10, the bit 1 can be positioned to engage with the mounting bolt 20, and the mounting bolt can be tightened by the bit. In this embodiment, when disassembling the mounting bolt 20 of the vehicle component 10 located in a confined space on the vehicle, the positioning and guiding effect of the positioning element 3 can be used to quickly engage the bit 1 with the mounting bolt 20 without observation, so that the wrench 2 can further drive the bit 1 to tighten the mounting bolt 20. This increases the convenience of disassembling and assembling the mounting bolt 20 on the vehicle component 10 located in a confined space, thereby improving the efficiency of disassembling and assembling the vehicle component 10.

[0035] Based on the above overview, specifically, it is worth noting that the vehicle component 10 in this embodiment can be, for example, the ECU in the electronically integrated braking control system of the vehicle. The mounting bolt 20 is used to install the ECU in the engine compartment of the vehicle. Furthermore, during vehicle assembly and roll-off, the ECU in the electronically integrated braking control system is obscured by other components in the engine compartment, appearing as a hidden installation. Therefore, if the ECU needs to be replaced, the tools described in this embodiment are required to remove and install the mounting bolt 20 on the vehicle component 1, i.e., the ECU, within the confined space of the engine compartment.

[0036] Furthermore, the aforementioned method of turning the wrench 2 drives the bit 1 to rotate in a preset direction, which is also the installation or disassembly direction of the mounting bolt 20. The positioning element 3 positions the bit 1 to engage with the mounting bolt 20, meaning the head of the bit 1 meshes with the head of the mounting bolt 20. At this point, rotation of the bit 1 will cause the mounting bolt 20 to rotate synchronously.

[0037] In this embodiment, we continue to combine Figure 1As shown, in some exemplary embodiments, the aforementioned screw-on wrench 2 may be, for example, a ratchet wrench.

[0038] This allows the ratchet wrench 2 to be used. It is understood that by utilizing the unidirectional turning characteristic of the ratchet wrench, it is not necessary to disconnect the bit 1 from the mounting bolt 20 during the tightening process. This avoids repeated positioning and engagement operations of the bit 1, which helps to further improve the efficiency of disassembling and assembling vehicle parts 10.

[0039] In addition, combined Figure 1 As shown, the bit 1 is inserted into the insertion hole 201 at one end of the wrench 2 via its insertion end 1a. The insertion hole 201 on the wrench 2 can be positioned using a conventional ratchet wrench structure. Furthermore, to allow the bit 1 to be pressed down by the wrench 2 after insertion, the insertion hole 201 can be designed as a blind hole. Simultaneously, to ensure the bit 1 is positioned within the insertion hole 201 and does not easily fall out, for example, the diameter and cross-section of the insertion hole 201 can be adapted to the bit 1, and the corresponding structure at the insertion hole 201 can also be magnetic to attract the bit 1.

[0040] In this embodiment, the following continues... Figure 3 and Figure 4 As shown, in some exemplary embodiments, an arc transition groove 310 may be provided at the opening of the mounting hole 30, and one end of the positioning member 3 sleeved on the bit 3 can be embedded in the arc transition groove 310 to position the bit 1 and engage with the mounting bolt 20.

[0041] At this time, by embedding the positioning element 3 into the arc transition groove 310 at the opening of the mounting through hole 30, the bit 1 is positioned. Obviously, compared with the method of letting the positioning element 3 directly enter the mounting through hole 30, it is not necessary to consider the influence of the insertion amount of the positioning element 3 in the mounting through hole 30 on the positioning operation, which can facilitate the simplification of the design and make it easier to perform the positioning operation of the positioning element 3.

[0042] In specific implementation, to ensure the proper fit between the positioning element 3 and the arc transition groove 310 at the opening of the mounting hole 30, so that the bit 1 can be smoothly joined with the mounting bolt 20 under the positioning guidance of the positioning element 3, it should be noted that, for example, the diameter of the positioning element 3 can be set to be the same as the maximum diameter of the arc transition groove 310. Also, based on the size parameters of the arc transition groove 310, the end of the positioning element 3 embedded in the arc transition groove 310 is rounded so that the end of the positioning element 3 can fit against the inner wall of the arc transition groove 310, and at the same time, it plays a better centering role for the positioning element 3, thereby ensuring the positioning effect of the positioning element 3 on the bit 1.

[0043] In this embodiment, in some exemplary implementations, the positioning element 3 may be made of rubber, and in specific implementations, EPDM rubber with moderate hardness is generally sufficient.

[0044] Thus, the positioning element 3 is made of rubber, which not only makes it lighter than materials such as metal, facilitating its use, but also, by utilizing the elasticity of rubber, allows it to be easily fitted onto the bit 1. On the one hand, the diameter of the central hole 301 on the positioning element 3 is slightly smaller than the outer diameter of the mounting rod 1b on the bit 1, effectively preventing the positioning element 1 from slipping off the bit 1 and ensuring its stability on the bit. On the other hand, it allows relative sliding between the bit 1 and the positioning element 3, enabling better adaptability to the depth of the mounting hole 20 when the positioning element 3 is embedded in the arc transition groove 310, thereby improving the quality of tool use.

[0045] Continue as Figure 1 and Figure 2 As shown, in some exemplary embodiments, the tool of this embodiment may further include, for example, a lifting member 4.

[0046] The lifting component 4 is elongated, and one end of the lifting component 4 is the operating end 42. When the lifting component 4 is operated through the operating end 42, the lifting component 4 can drive the screwdriver 2 to rotate through its other end, so as to tighten the mounting bolt 20 through the bit 1.

[0047] It is understandable that by further designing the elongated lifting member 4, one end of the lifting member 4 becomes the operating end 42. When the lifting member 4 is operated through the operating end 42, the other end of the lifting member 4 can drive the screw wrench 2 to rotate. This not only solves the inconvenience of directly turning the screw wrench 2 by hand in a confined space with the assistance of the lifting member 4, but also helps to prevent burns caused by directly operating the screw wrench 2 when the surrounding environment is hot due to engine heat, especially for vehicle parts 10 located in the engine compartment. This improves the convenience and safety of tool use.

[0048] In this embodiment, based on the aforementioned lifting component 4, in specific implementation, it is further combined with... Figure 1 As shown, in some exemplary embodiments, a through hole 202 may be provided at the other end of the screwdriver 2 relative to one end of the insert bit 1, and the end of the lifting member 4 can be inserted into the through hole 202 and drive the screwdriver 2 to rotate.

[0049] In this way, by setting a through hole 202 on the wrench 2 and inserting the end of the lifting member 4 into the through hole 202 to drive the wrench 2 to rotate, it is easy to achieve reliable linkage between the lifting member 4 and the wrench 2, which helps to ensure the effectiveness of the lifting member 4.

[0050] In this embodiment, please refer to Figure 2 As shown, in some exemplary embodiments, the lifting member 4 may be made of steel wire, for example. In this case, making the lifting member 4 of steel wire is obviously beneficial to the design and manufacture of the lifting member 4, and also helps to reduce the cost of the lifting member 4.

[0051] In addition, based on the use of steel wire, in specific implementation, for example, one end of the steel wire can be bent to one side to form the above-mentioned operating end 42, and the other end of the steel wire can be continuously bent to form the hook end 43. The hook end 43 has a first part 431 perpendicular to the main body part 41 of the steel wire, a second part 432 perpendicular to the first part 431, and a third part 433 perpendicular to the second part 432. The third part 433 points to one side of the main body part 41 and is used to be inserted into the through hole 202.

[0052] It is understandable that, based on the use of steel wire, this embodiment forms the operating end 42 by bending one end of the steel wire to one side. At the same time, it can apply a manipulating force to the lifting member 4 through the operating end 42, and also has the advantages of simple structure and easy molding.

[0053] By continuously bending the other end of the steel wire into a hook end 43 having a first part 431, a second part 432, and a third part 433, it is clear that by inserting the third part 433 into the through hole 202 on the wrench 2, the hook end 43 can form a good hooking effect with the wrench 2. This can better achieve reliable linkage between the lifting part 3 and the wrench 2, and also help ensure the use effect of the lifting part 4.

[0054] Continue as Figure 1 As shown, in some exemplary embodiments, the tool of this embodiment may further include, for example, an anti-drop component 5. The anti-drop component 5 is made of soft rope, the length and diameter of which can be determined according to the specific use scenario, and one end of the anti-drop component 5 is used to tie it to the bit 1 or the positioning component 3.

[0055] At this point, by further setting up an anti-drop component 5 made of soft rope, and binding one end of the anti-drop component 5 to the bit 1 or the positioning component 3, it can be understood that it can quickly find the fallen tool when the bit 1 and the positioning component 3 fall during the installation and disassembly of the mounting bolt 20, which can avoid the waste of time caused by the tool falling, and help ensure the work efficiency of disassembling and assembling vehicle parts 10.

[0056] It is worth noting that, regarding the bolt removal and installation tool of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still provided by... Figures 1 to 4 As shown, it may include, for example, a bit 1, a wrench 2, a positioning element 3, a lifting element 4, and an anti-drop element 5.

[0057] The bit 1 can be inserted into the insertion hole 201 at one end of the wrench 2 via its insertion end 1a, and the wrench 2 can drive the bit 1 to rotate in the installation or removal direction of the mounting bolt 20. The positioning element 3 is made of rubber and can be fitted onto the bit 1. The positioning element 3 fits into the mounting through hole 30 on the vehicle component 10, positioning the bit 1 to engage with the mounting bolt 20, and the mounting bolt 20 can be tightened by the bit 1 under the action of the wrench 2.

[0058] The lifting component 4 is elongated, with one end being the operating end 42 and the other end being the hooking end 43. When the lifting component 4 is operated through the operating end 42, it can drive the wrench 2 to rotate via the hooking end 43. The anti-drop component 5 is made of soft rope, and one end of the anti-drop component 5 can be tied to the bit 1 or the positioning component 3.

[0059] In the preferred embodiment of the tool for bolt removal and installation described above, the specific settings and arrangements of the bit 1, wrench 2, positioning element 3, lifting element 4, and anti-drop element 5 can still be found in the descriptions of the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the bit 1, wrench 2, positioning element 3, lifting element 4, and anti-drop element 5 can also be found in the descriptions of the above exemplary embodiments.

[0060] When using the tool in this embodiment, taking the disassembly of the ECU in the electronically integrated braking control system located in the engine compartment as an example, firstly, one end of the anti-drop component 5 is tied to the bit 1 or the positioning component 3, and then the positioning component 3 is fitted onto the mounting rod 1b in the bit 1. Then, the insertion end 1a of the bit 1 is inserted into the insertion hole 201 at one end of the wrench 2, and the bit 1 can be attracted into the insertion hole 201 by utilizing the magnetism of the wrench 2.

[0061] Next, the hook end 43 of the lifting member 4 is engaged in the through hole 202 at the other end of the wrench 2. One hand can then operate the wrench 2 to pass through the narrow space in the engine compartment, allowing the positioning member 3 to embed into the arc transition groove 310 at the mounting through hole 30 on the vehicle component 10. After the positioning member 3 is embedded in the arc transition groove 310, the wrench 2 is used to press down the bit 1, causing the head of the bit 1 to engage with the head of the mounting bolt 20. Then, while one hand continues to press down on the wrench 2, the other hand can operate the lifting member 4 to rotate the wrench 2. The rotating wrench 2, through the bit 1, causes the mounting bolt 20 to rotate, thus achieving its disassembly.

[0062] When installing the mounting bolts 20 on the vehicle component 10 using the tools of this embodiment, the specific operation process is similar to that described above, and will not be repeated here.

[0063] The tool for bolt removal and installation in this embodiment adopts the above design. When removing the mounting bolts 20 on the vehicle component 10 located in a confined space, it can not only utilize the positioning and guiding function of the positioning member 3 to quickly engage the bit 1 with the mounting bolt 20 without observation, thus increasing the convenience of removing and installing the mounting bolts 20 on the vehicle component 10 located in a confined space, but also facilitate the operation of the screwdriver plate 2 through the lifting member 4 and the retrieval of the fallen tool through the anti-drop member 5. It is beneficial to improve the work efficiency of removing and installing the vehicle component 10 and has good practicality.

[0064] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A tool for removing and installing bolts, suitable for removing mounting bolts (20) on vehicle parts (10), characterized in that: The mounting bolt (20) is located in the mounting through hole (30) on the vehicle component (10), and the tool includes a bit (1), a wrench (2) and a positioning element (3). The bit (1) can be inserted into one end of the screwdriver (2), and the screwdriver (2) can drive the bit (1) to rotate in a preset direction; The positioning element (3) can be fitted onto the bit (1), and the fitted positioning element (3) cooperates with the mounting through hole (30) to position the bit (1) to engage with the mounting bolt (20) so that the mounting bolt (20) can be screwed through the bit (1).

2. The tool for bolt removal and installation according to claim 1, characterized in that: The screw wrench (2) is a ratchet wrench.

3. The tool for bolt removal and installation according to claim 1, characterized in that: The mounting hole (30) has an arc transition groove (310) at its opening. One end of the positioning member (3) can be embedded in the arc transition groove (310) and position the bit (1) to be combined with the mounting bolt (20).

4. The tool for bolt removal and installation according to claim 1, characterized in that: The positioning element (3) is made of rubber.

5. The tool for bolt removal and installation according to claim 1, characterized in that: The tool includes a lifting component (4); The lifting member (4) is long and narrow, and one end of the lifting member (4) is the operating end (42). When the lifting member (4) is operated through the operating end (42), the lifting member (4) can drive the screw wrench (2) to rotate through its other end.

6. The tool for bolt removal and installation according to claim 5, characterized in that: The other end of the screwdriver (2) has a through hole (202) relative to the end where the bit (1) is inserted, and the end of the lifting member (4) can be inserted into the through hole (202) and drive the screwdriver (2) to rotate.

7. The tool for bolt removal and installation according to claim 6, characterized in that: The lifting component (4) is made of steel wire, and one end of the steel wire is bent to one side to form the operating end (42), and the other end of the steel wire is continuously bent to form the hook end (43). The hook end (43) has a first part (431) perpendicular to the main body part (41) of the wire, a second part (432) perpendicular to the first part (431), and a third part (433) perpendicular to the second part (432), and the third part (433) points to one side of the main body part (41) and is used to insert into the through hole (202).

8. The tool for bolt removal and installation according to any one of claims 1 to 7, characterized in that: The tool includes a fall-proof component (5); The anti-falling piece (5) is made of soft rope, and one end of the anti-falling piece (5) is used for being bound on the batch head (1) or the positioning piece (3).

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