A socket for disassembly of a threaded fastener

Abstract

The utility model provides a kind of sleeve for disassembling and assembling threaded fastener, belong to the technical field of screwing or loosening screw or nut cap.Sleeve for disassembling and assembling threaded fastener includes sleeve body, the hexagonal hole for accommodating nut or bolt head is equipped in sleeve body, the hole bottom of hexagonal hole has the fastener stop face for the stop of nut or bolt head, hexagonal hole has six straight extension hole side walls, the plane of each hole side wall and the outer peripheral surface between sleeve body all have solid part, installation hole is set up on any three interval distributed hole side walls of six hole side walls or the solid part corresponding to six hole side walls, and peripheral permanent magnet for the adsorption fixation of nut or bolt head is installed in each installation hole, the setting of peripheral permanent magnet is realized, and peripheral permanent magnet has three or six, and is circumferentially distributed setting, can guarantee the adsorption effect to nut or bolt.

Description

Technical Field

[0001] This utility model relates to a sleeve for disassembling and assembling threaded fasteners, belonging to the field of mechanical technology for tightening or loosening screws or nuts. Background Technology

[0002] In the field of live-line work with high voltage, bolt removal and installation are frequently encountered. For example, when a bolt is loose, it needs to be tightened; when a bolt is severely corroded, the old bolt needs to be removed and a new bolt installed. Due to the inherent dangers of live-line work at height, bolt removal and installation are generally performed automatically using bolt removal and installation mechanisms on the work platform of aerial work platforms.

[0003] For example, Chinese invention patent application CN118720709A discloses a fitting bolt disassembly and assembly device and a fitting bolt equipotential disassembly and assembly composite working platform. The working platform includes a base, a longitudinal moving mechanism mounted on the base, a pitch angle adjustment structure mounted on the longitudinal moving mechanism, a vertical moving mechanism mounted on the pitch angle adjustment structure, a horizontal moving mechanism mounted on the vertical moving mechanism, and a fitting bolt disassembly and assembly device mounted on the horizontal moving mechanism. The fitting bolt disassembly and assembly device includes a nut holder and a bolt holder. The nut holder has a nut sleeve for locking the nut, and the bolt holder has a bolt sleeve for locking the bolt head. Both the nut sleeve and the bolt sleeve have magnetic attraction structures inside, so that while engaging with the nut and bolt to prevent rotation, they can also attract and fix the nut and bolt, preventing them from falling off.

[0004] The specific configuration of the magnetic attraction structure was not disclosed in the aforementioned patent application. Based on this, this application provides a sleeve for disassembling and assembling threaded fasteners, provides a specific configuration of the magnetic attraction structure, and ensures the attraction effect on nuts or bolts. Utility Model Content

[0005] The purpose of this utility model is to provide a sleeve for disassembling and assembling threaded fasteners. In view of the problem that the existing patent application documents do not disclose the specific setting method of the magnetic attraction structure, this utility model provides a specific setting method of the magnetic attraction structure and ensures the attraction effect on nuts or bolts.

[0006] To achieve the above objectives, the sleeve for disassembling and assembling threaded fasteners in this utility model adopts the following technical solution:

[0007] A sleeve for disassembling and assembling threaded fasteners includes a sleeve body with a hexagonal hole for accommodating the head of a nut or bolt. The bottom of the hexagonal hole has a fastener-stopping surface for stopping the head of the nut or bolt. The hexagonal hole has six straight, extending sidewalls. Each sidewall has a solid portion between its plane and the outer circumferential surface of the sleeve body. Mounting holes are provided on any three evenly spaced sidewalls or on the corresponding solid portions of the six sidewalls. A peripheral permanent magnet for attracting and fixing the head of the nut or bolt is installed in each mounting hole.

[0008] The beneficial effects of the above technical solution are as follows: This utility model is a pioneering invention. The provided threaded fastener disassembly and assembly sleeve includes a sleeve body. The sleeve body has a hexagonal hole for accommodating the head of a nut or bolt. The bottom of the hexagonal hole has a fastener stopping surface for stopping the head of the nut or bolt. When the head of the nut or bolt enters the hexagonal hole, the position of the head of the nut or bolt can be positioned by the stopping action of the fastener stopping surface. The hexagonal hole has six straight and extending hole sidewalls. The plane of each hole sidewall has a solid part between it and the outer circumferential surface of the sleeve body. Mounting holes are opened on any three evenly spaced hole sidewalls or on the corresponding solid parts of the six hole sidewalls. An outer permanent magnet for adsorbing and fixing the head of the nut or bolt is installed in each mounting hole. The setting of the outer permanent magnet is realized. There are three or six outer permanent magnets, which are evenly distributed in a circle, which can ensure the adsorption effect of the nut or bolt.

[0009] Furthermore, the sleeve is a nut sleeve, and the sleeve body of the nut sleeve is also provided with a washer receiving hole that communicates with the hexagonal hole for accommodating the washer.

[0010] Furthermore, the washer receiving hole includes a flat washer receiving hole for accommodating a flat washer and a spring washer receiving hole for accommodating a spring washer. The spring washer receiving hole is located between the hexagonal hole and the flat washer receiving hole. The diameter of the flat washer receiving hole is larger than that of the spring washer receiving hole. A spring washer stopping surface is formed between the spring washer receiving hole and the hexagonal hole for stopping the spring washer. A flat washer stopping surface is formed between the flat washer receiving hole and the spring washer receiving hole for stopping the flat washer. The mounting hole is provided on the flat washer stopping surface. None of the peripheral permanent magnets protrude from the flat washer stopping surface.

[0011] Furthermore, a nut edge clearance groove is provided at the transition connection position of two adjacent hole sidewalls to avoid the nut edge, and the nut edge clearance groove passes through the flat washer stop surface and the spring washer stop surface.

[0012] Furthermore, the sleeve is a bolt sleeve, and a fixing hole is provided on the fastener stop surface. An end face permanent magnet for adsorbing and fixing the end face of the bolt head is fixed in the fixing hole.

[0013] Furthermore, a central hole is provided at the bottom center of the hexagonal hole inside the bolt sleeve, and three or more fixing holes are evenly distributed around the axis of the central hole.

[0014] Furthermore, the sleeve is a bolt sleeve, and a bolt edge avoidance groove is provided at the transition connection position of two adjacent hole sidewalls to avoid the edge of the bolt head.

[0015] Furthermore, each fixing hole is a cylindrical blind hole, and each end face permanent magnet is cylindrical.

[0016] Furthermore, the shape and size of each end face permanent magnet and each outer peripheral permanent magnet are the same.

[0017] Furthermore, each mounting hole is a cylindrical blind hole, and each peripheral permanent magnet is cylindrical. Attached Figure Description

[0018] Figure 1 This is an exploded view of Embodiment 1 of the threaded fastener assembly and disassembly sleeve of this utility model (including nut, flat washer and spring washer).

[0019] Figure 2 This is a front view of one embodiment of the sleeve for disassembling and assembling threaded fasteners of this utility model;

[0020] Figure 3 This is a perspective view of the sleeve body in Embodiment 1 of the sleeve for disassembling and assembling threaded fasteners of this utility model.

[0021] Figure 4 This is a front view of Embodiment 2 of the sleeve for disassembling and assembling threaded fasteners of this utility model;

[0022] Figure 5 This is a perspective view of Embodiment 2 of the sleeve for disassembling and assembling threaded fasteners according to this utility model.

[0023] In the diagram: 1. Nut sleeve body; 1.1 Nut sleeve center hole; 1.2 Nut stop surface; 1.3 Nut hexagonal hole sidewall; 1.4 Spring washer receiving hole; 1.5 Spring washer stop surface; 1.6 Flat washer receiving hole; 1.7 Flat washer stop surface; 1.8 Nut edge clearance groove; 1.9 Nut sleeve mounting hole; 2. Nut peripheral permanent magnet; 3. Nut; 4. Spring washer; 5. Flat washer; 6. Bolt sleeve body; 6.1 Bolt sleeve center hole; 6.2 Bolt stop surface; 6.3 Bolt hexagonal hole sidewall; 6.4 Bolt sleeve mounting hole; 6.5 Bolt edge clearance groove; 6.6 Fixing hole; 6.7 End face permanent magnet; 7. Bolt peripheral permanent magnet. Detailed Implementation

[0024] The basic concept of this utility model is to open an installation hole on the solid part between the plane of the hexagonal hole sidewall in the sleeve body and the outer peripheral surface of the sleeve body, and install a permanent magnet to achieve adsorption and fixation of the nut or bolt head.

[0025] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0026] Embodiment 1 of the sleeve for disassembling and assembling threaded fasteners in this utility model:

[0027] In Implementation Method 1, the sleeve for disassembling and assembling threaded fasteners is a nut sleeve, used to lock and hold the nut in place, such as... Figure 1 , Figure 2 and Figure 3 As shown, the nut sleeve includes a nut sleeve body 1 and a permanent magnet 2 for the outer periphery of the nut installed on the nut sleeve body 1.

[0028] Specifically, the nut sleeve body 1 is provided with a hexagonal hole for accommodating the nut 3. The bottom of the hexagonal hole is provided with a central hole 1.1 of the nut sleeve that runs through the axial direction. The bottom of the hexagonal hole has a fastener stop surface (i.e., nut stop surface 1.2) for stopping the nut 3. The nut stop surface 1.2 is also the bottom wall of the hexagonal hole. When the nut 3 enters the hexagonal hole, the position of the nut 3 can be positioned.

[0029] The hexagonal hole of the nut has six straight, extending sidewalls (i.e., hexagonal hole sidewalls 1.3). The plane containing each hexagonal hole sidewall 1.3 has a solid portion between it and the outer circumferential surface of the nut sleeve body 1. Each of the six hexagonal hole sidewalls 1.3 has a mounting hole (i.e., nut sleeve mounting hole 1.9). Each nut sleeve mounting hole 1.9 has a permanent magnet 2 for adsorbing and fixing the nut 3. That is, there are six nut sleeve mounting holes 1.9 and six permanent magnets 2, which are evenly distributed in the circumferential direction, so as to form a good adsorption effect on the nut 3.

[0030] Furthermore, bolts and nuts are usually installed with washers to achieve a certain anti-loosening effect. In order to enable the installation and removal of washers at the same time as the installation and removal of nuts, in this embodiment, a washer receiving hole is also provided in the nut sleeve body 1, which communicates with the hexagonal hole of the nut to accommodate the washer.

[0031] In one specific embodiment, the washer receiving hole includes a flat washer receiving hole 1.6 for accommodating a flat washer 5 and a spring washer receiving hole 1.4 for accommodating a spring washer 4. The spring washer receiving hole 1.4 is located between the hexagonal hole of the nut and the flat washer receiving hole 1.6, which corresponds to the spring washer 4 being located between the nut 3 and the flat washer 5 in actual applications. The diameter of the flat washer receiving hole 1.6 is larger than the diameter of the spring washer receiving hole 1.4, which corresponds to the outer diameter of the flat washer 5 being larger than the outer diameter of the spring washer 4 in actual applications. Therefore, a spring washer stopping surface 1.5 is formed between the spring washer receiving hole 1.4 and the hexagonal hole of the nut to stop the spring washer 4. When the spring washer 4 enters the spring washer receiving hole 1.4, the spring washer stopping surface 1.5 can position it. A flat washer stop surface 1.7 is formed between the flat washer receiving hole 1.6 and the spring washer receiving hole 1.4 to stop the flat washer 5. When the flat washer 5 enters the flat washer receiving hole 1.6, the flat washer stop surface 1.7 can position it.

[0032] The aforementioned nut sleeve mounting hole 1.9 is formed on the flat washer stop surface 1.7, thus realizing the arrangement of the nut sleeve mounting hole 1.9. The permanent magnets 2 surrounding each nut do not protrude from the flat washer stop surface 1.7, and are preferably flush with it. This ensures that the end faces of the permanent magnets 2 surrounding each nut can contact the flat washer 5, thereby providing a good attraction effect on the flat washer 5.

[0033] Furthermore, each nut sleeve mounting hole 1.9 is a cylindrical blind hole, facilitating manufacturing. The peripheral permanent magnets 2 of each nut are also cylindrical, making them easy to purchase and configure. When installing the peripheral permanent magnets 2, they can be directly inserted into the bottom of the hole. The fixing method can be either interference fit or adhesive applied inside the nut sleeve mounting hole 1.9 to bond and fix the peripheral permanent magnets 2. In other embodiments, each nut sleeve mounting hole 1.9 can also be a square hole, such as a square or hexagonal hole, in which case the corresponding peripheral permanent magnets 2 are square or hexagonal blocks. Additionally, in other embodiments, the nut sleeve mounting hole 1.9 can also be a through hole.

[0034] In this embodiment, all nut sleeve mounting holes 1.9 have the same depth, and the shape and size of the permanent magnets 2 surrounding each nut are identical. Furthermore, the depth of the nut sleeve mounting holes 1.9 does not reach the hexagonal hole of the nut, or in other words, radially, the nut sleeve mounting holes 1.9 and the hexagonal hole of the nut do not overlap. Besides the contact and attraction between the permanent magnets 2 surrounding the nut and the flat washer 5, the permanent magnets 2 surrounding each nut are evenly distributed around the spring washer 4. Simultaneously, the permanent magnets 2 surrounding each nut magnetize the nut sleeve body 1, causing the nut sleeve body 1 to also attract the spring washer 4 and the nut 3. In reality, it is mainly the permanent magnets 2 surrounding the nut that directly contact and attract the flat washer 5, resulting in a very strong attraction force. Therefore, the spring washer 4 and the nut 3 inside will not come out at all.

[0035] Of course, in other embodiments, the depth of the nut sleeve mounting hole 1.9 can be designed to reach the periphery of the nut hexagonal hole. In this case, the permanent magnet 2 on the periphery of the nut has a stronger magnetization effect on the nut sleeve body 1, and therefore the attraction effect on the nut 3 will be stronger.

[0036] Furthermore, to facilitate the insertion of the nut 3 into the nut sleeve body 1, in this embodiment, a nut edge clearance groove 1.8 is provided at the transition connection position of the sidewalls 1.3 of two adjacent nut hexagonal holes to avoid the nut edge. The nut edge clearance groove 1.8 penetrates the flat washer stop surface 1.7 and the spring washer stop surface 1.5, which is equivalent to breaking the flat washer stop surface 1.7 and the spring washer stop surface 1.5 to allow the nut 3 to enter. In other embodiments, the nut edge clearance groove 1.8 may not be provided, and the nut hexagonal hole may be set slightly larger than the size of the nut to allow the nut to enter.

[0037] In other embodiments, there may be only one washer receiving hole for accommodating the washer. For example, the bolt and nut are only used with flat washers. In this case, the washer receiving hole only includes the flat washer receiving hole. Of course, a flat washer stopping surface is formed between the flat washer receiving hole and the hexagonal hole of the nut to stop the flat washer. If a nut edge relief groove is provided at this time, the nut edge relief groove passes through the flat washer stopping surface.

[0038] Of course, in other embodiments, if the bolt and nut are not used with washers, then there is no need to provide a washer receiving hole.

[0039] In other embodiments, instead of all six hexagonal hole sidewalls 1.3 having nut sleeve mounting holes 1.9, any three can be selected, with these three nut sleeve mounting holes 1.9 evenly spaced to ensure the number of permanent magnets 2 around the nut, thus achieving a good adsorption effect.

[0040] Embodiment 2 of the sleeve for disassembling and assembling threaded fasteners in this utility model:

[0041] In Implementation Method Two, the sleeve used for disassembling and assembling threaded fasteners is a bolt sleeve, used to lock and hold the bolt head in place, such as... Figure 4 and Figure 5 As shown, the bolt sleeve includes a bolt sleeve body 6 and a bolt peripheral permanent magnet 7 mounted on the bolt sleeve body 6.

[0042] Specifically, the bolt sleeve body 6 is provided with a bolt hexagonal hole for accommodating the bolt head. The bottom of the bolt hexagonal hole is provided with a bolt sleeve center hole 6.1 that runs through the axial direction. The bottom of the bolt hexagonal hole has a fastener stopping surface (i.e., bolt stopping surface 6.2) for stopping the bolt head. The bolt stopping surface 6.2 is also the bottom wall of the bolt hexagonal hole. When the bolt head enters the bolt hexagonal hole, the position of the bolt head can be positioned.

[0043] The bolt hexagonal hole has six straight, extending sidewalls (i.e., bolt hexagonal hole sidewalls 6.3). Each sidewall 6.3 has a solid portion between its plane and the outer circumferential surface of the bolt sleeve body 6. Each of the six solid portions corresponding to the bolt hexagonal hole sidewalls 6.3 has a mounting hole (i.e., bolt sleeve mounting hole 6.4). Each bolt sleeve mounting hole 6.4 contains a permanent magnet 7 for attracting and fixing the bolt head (installation method similar to that of a nut sleeve). In other words, there are six bolt sleeve mounting holes 6.4 and six permanent magnets 7, evenly distributed circumferentially around the bolt head. The permanent magnets 7 magnetize the bolt sleeve body 6, thus creating a good attraction effect on the bolt head.

[0044] Furthermore, since the bolt head is inside the hexagonal bolt hole while the bolt shank protrudes outwards, the overall weight of the bolt is much greater than that of the nut. To provide better adhesion to the bolt and prevent it from coming off, a fixing hole 6.6 is provided on the bolt stop surface 6.2 in this embodiment. A permanent magnet 6.7 for adsorbing and fixing the end face of the bolt head is fixed in the fixing hole 6.6 (the fixing method is the same as that of the nut sleeve). Preferably, the permanent magnet 6.7 is flush with the bolt stop surface 6.2 and can directly contact and adhere to the end face of the bolt head, greatly enhancing the adhesion and fixing effect of the bolt sleeve on the bolt.

[0045] Furthermore, the aforementioned fixing holes 6.6 are evenly distributed in three or more locations around the axis of the bolt sleeve center hole 6.1, and in this embodiment there are six. Each fixing hole 6.6 is located between the bolt sleeve center hole 6.1 and the bolt hexagonal hole sidewall 6.3. One fixing hole 6.6 and one bolt sleeve mounting hole 6.4 are arranged in the same radial direction, so that one end face permanent magnet 6.7 and one bolt peripheral permanent magnet 7 are arranged in the same radial direction, forming a set of magnet groups. There are a total of six sets of magnet groups on the bolt sleeve, resulting in a better adsorption effect.

[0046] In this embodiment, each fixing hole 6.6 is a cylindrical blind hole, and each end face permanent magnet 6.7 is cylindrical, which facilitates processing, manufacturing, and installation. Furthermore, the shape and size of each end face permanent magnet 6.7 and the outer periphery permanent magnet 7 of each bolt are identical, thus requiring only one type of permanent magnet, which facilitates the processing and manufacturing of the fixing holes 6.6 and the bolt sleeve mounting holes 6.4, as well as the installation of each permanent magnet.

[0047] Of course, in other embodiments, the shape and size of the end face permanent magnet 6.7 and the bolt peripheral permanent magnet 7 may be different. Also, each fixing hole 6.6 and each bolt sleeve mounting hole 6.4 may be a square hole, such as a quadrangular or hexagonal hole. In this case, the corresponding end face permanent magnet 6.7 and bolt peripheral permanent magnet 7 are square or hexagonal blocks. Furthermore, in other embodiments, each fixing hole 6.6 and each bolt sleeve mounting hole 6.4 may also be a through hole.

[0048] In other embodiments, three, four, or five fixing holes 6.6 may be provided, and they may be evenly distributed around the circumference. Alternatively, only two fixing holes may be provided, arranged at 180° intervals. In other embodiments, if the bottom of the hexagonal bolt hole does not have a bolt sleeve center hole 6.1, meaning the bottom of the hexagonal bolt hole is closed, then the fixing hole 6.6 can be located at the center of the bottom of the hole, and only one is needed. Alternatively, fixing holes 6.6 can be provided at both the center and the periphery of the bottom of the hole to allow for the installation of more end-face permanent magnets 6.7. In other embodiments, fixing holes 6.6 may not be provided at all, meaning the end-face permanent magnets 6.7 may not be installed, and the bolt may be secured solely by the peripheral permanent magnets 7.

[0049] Furthermore, to facilitate the bolt head entering the bolt sleeve body 6, in this embodiment, a bolt edge clearance groove 6.5 is provided at the transition connection position of the sidewalls 6.3 of two adjacent bolt hexagonal holes to avoid the edge of the bolt head. In other embodiments, the bolt edge clearance groove 6.5 may not be provided, and the bolt hexagonal hole may be set slightly larger than the size of the bolt head to facilitate the bolt head's entry.

[0050] Finally, it should be noted that the threaded fastener assembly and disassembly sleeves provided by this utility model, including nut sleeves and bolt sleeves, can be connected to the hardware bolt assembly and disassembly device disclosed in Chinese invention patent application CN118720709A. Of course, they can also be applied to other non-electric bolt assembly and disassembly operations, such as automated bolt assembly and disassembly operations on large steel structures, in which case the bolt assembly and disassembly platform is mounted on a regular aerial work platform. Naturally, they can also be applied to non-aerial bolt assembly and disassembly operations; any scenario requiring the automatic installation and disassembly of bolts and nuts that necessitates the use of nut sleeves and bolt sleeves can be employed.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A sleeve for disassembling and assembling threaded fasteners, characterized in that, The sleeve includes a sleeve body with a hexagonal hole for accommodating the head of a nut or bolt. The bottom of the hexagonal hole has a fastener stop surface for stopping the head of the nut or bolt. The hexagonal hole has six straight, extending sidewalls. Each sidewall has a solid portion between its plane and the outer circumferential surface of the sleeve body. Mounting holes are provided on any three evenly spaced sidewalls or on the solid portions corresponding to the six sidewalls. A peripheral permanent magnet for attracting and fixing the head of the nut or bolt is installed in each mounting hole.

2. The sleeve for disassembling and assembling threaded fasteners according to claim 1, characterized in that, The sleeve is a nut sleeve, and the sleeve body of the nut sleeve is also provided with a washer receiving hole that communicates with the hexagonal hole to accommodate the washer.

3. The sleeve for disassembling and assembling threaded fasteners according to claim 2, characterized in that, The washer receiving hole includes a flat washer receiving hole for accommodating a flat washer and a spring washer receiving hole for accommodating a spring washer. The spring washer receiving hole is located between the hexagonal hole and the flat washer receiving hole. The diameter of the flat washer receiving hole is larger than that of the spring washer receiving hole. A spring washer stopping surface is formed between the spring washer receiving hole and the hexagonal hole for stopping the spring washer. A flat washer stopping surface is formed between the flat washer receiving hole and the spring washer receiving hole for stopping the flat washer. The mounting hole is provided on the flat washer stopping surface. None of the peripheral permanent magnets protrude from the flat washer stopping surface.

4. The sleeve for disassembling and assembling threaded fasteners according to claim 3, characterized in that, A nut edge clearance groove is provided at the transition connection position of two adjacent hole sidewalls to avoid the nut edge. The nut edge clearance groove passes through the flat washer stop surface and the spring washer stop surface.

5. The sleeve for disassembling and assembling threaded fasteners according to claim 1, characterized in that, The sleeve is a bolt sleeve, and a fixing hole is provided on the fastener stop surface. A permanent magnet for adsorbing and fixing the end face of the bolt head is fixed in the fixing hole.

6. The sleeve for disassembling and assembling threaded fasteners according to claim 5, characterized in that, The hexagonal hole inside the bolt sleeve has a central hole at the bottom center, and three or more fixing holes are evenly distributed around the axis of the central hole.

7. The sleeve for disassembling and assembling threaded fasteners according to claim 1, characterized in that, The sleeve is a bolt sleeve, and a bolt edge avoidance groove is provided at the transition connection position of two adjacent hole sidewalls to avoid the edge of the bolt head.

8. The sleeve for disassembling and assembling threaded fasteners according to claim 5 or 6, characterized in that, Each fixing hole is a cylindrical blind hole, and each end face permanent magnet is cylindrical.

9. The sleeve for disassembling and assembling threaded fasteners according to claim 5 or 6, characterized in that, The shape and size of each end face permanent magnet and each outer peripheral permanent magnet are the same.

10. The sleeve for disassembling and assembling threaded fasteners according to any one of claims 1 to 7, characterized in that, Each mounting hole is a cylindrical blind hole, and each peripheral permanent magnet is cylindrical.

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