Bolt anti-rotation self-locking structure and auxiliary tool thereof
By designing a bolt anti-rotation self-locking structure and auxiliary tooling, and utilizing the cooperation of limiting parts and clamping parts, the problem of bolt loosening under vibration and load was solved, realizing the self-locking fixation of the bolt, and improving connection stability and equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING TAILAN NEW ENERGY CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-12
AI Technical Summary
During use, factors such as vibration and changing loads can reduce or eliminate the friction of bolts, leading to loosening or even failure of threaded connections, which affects the safety of mechanical equipment and the accuracy of experimental results.
A bolt anti-rotation self-locking structure was designed, including an anti-loosening structural component and auxiliary tooling. The anti-loosening structural component engages with the flange face of the bolt through a limiting part. The auxiliary tooling, through a clamping component and a tensioning assembly, drives the limiting part to bend and engage with the flange face, forming a clamping structure to prevent the bolt from loosening.
It effectively prevents bolts from loosening, improves the stability of bolted connections, and ensures the safety of mechanical equipment and the accuracy of experimental results.
Smart Images
Figure CN224352251U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of self-locking structure technology, specifically relating to a bolt anti-rotation self-locking structure and its auxiliary tooling. Background Technology
[0002] Bolted connections are a widely used type of detachable fixed connection structure, characterized by simple structure, reliable connection, and convenient assembly and disassembly. During use, bolts are subject to external factors such as vibration and varying loads, which can reduce or eliminate friction, leading to loosening or even failure of the threaded connection, threatening the safety of mechanical equipment. Utility Model Content
[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a bolt anti-rotation self-locking structure and its auxiliary tooling.
[0004] In a first aspect, this utility model provides a bolt anti-rotation self-locking structure, wherein the bolt has a flange face, and the bolt anti-rotation self-locking structure includes: an anti-loosening structural member, wherein the anti-loosening structural member includes a main body, and the main body has an installation hole that mates with the bolt;
[0005] At least two limiting parts are provided on one side of the main body. The limiting parts are used to bend and engage with the flange face when bolts are assembled in the mounting holes of the main body, so that the two sides of the flange face are respectively pressed and engaged with the main body and the limiting parts.
[0006] The bolt anti-rotation self-locking structure provided by this utility model utilizes the cooperation between the anti-loosening structural component and the flange face of the bolt to prevent the bolt from loosening or even failing, effectively achieving self-locking fixation of the bolt, improving the stability of the bolt connection, and thus ensuring the accuracy of experimental results and the safety of mechanical equipment.
[0007] In addition, the bolt anti-rotation self-locking structure of this utility model may also have the following additional technical features:
[0008] In some embodiments, the limiting portion includes a limiting ring that bends and extends toward the side away from the main body portion.
[0009] In some embodiments, a support portion is provided between two adjacent limiting rings.
[0010] A second aspect of this utility model provides an auxiliary tooling for a bolt anti-rotation self-locking structure, the auxiliary tooling being used to assist the bolt anti-rotation self-locking structure described in any embodiment of this application;
[0011] The auxiliary tooling includes a first clamping member and a second clamping member arranged opposite to each other, and the first clamping member and the second clamping member are connected on the same side by an elastic member;
[0012] A tensioning assembly is slidably disposed at the end of the first clamping member and the second clamping member away from the elastic member. The tensioning assembly extends into the limiting part. The first clamping member and the second clamping member are used to rotate relative to the flange surface so that the tensioning assembly drives the limiting part to bend and engage with the flange surface.
[0013] In some embodiments, a cam assembly is rotatably provided at the end of the first clamping member and the second clamping member away from the elastic member, the tensioning assembly is located between the cam assembly and the elastic member, and the cam assembly is in rolling engagement with the tensioning assembly;
[0014] The first clamping member and the second clamping member rotate relative to their corresponding cam assemblies to drive the tensioning assembly to move along the surface of the cam assembly toward a side away from the flange surface.
[0015] In some embodiments, the cam assembly includes a fixedly connected cam and a positioning shaft, the positioning shaft passing through the first clamping member or the second clamping member and press-fitting with the surface of the limiting portion, the cam being located outside the sidewall of the first clamping member or the second clamping member on the side away from the limiting portion.
[0016] In some embodiments, the tensioning assembly includes a tensioning shaft, and a first limiting member and a second limiting member are provided on both sides of the tensioning shaft along its axial direction;
[0017] The first clamping member and the second clamping member are provided with guide holes on the side near the cam assembly. The tensioning shaft is slidably assembled in the guide hole. The first limiting member and the second limiting member are located on the inner and outer sides of the guide hole. The first limiting member is in rolling engagement with the cam assembly. The tensioning shaft extends out of the second limiting member and can extend into the limiting part.
[0018] In some embodiments, both the first clamping member and the second clamping member are provided with limiting holes. The auxiliary tooling also includes a limiting adjustment component, which is slidably fitted into the limiting holes of the first clamping member and the second clamping member to adjust the opening degree of the first clamping member and the second clamping member.
[0019] In some embodiments, the limiting adjustment assembly includes a sliding portion, on both sides of which a first limiting portion and a second limiting portion are provided. The sliding portion slides through the limiting holes on the first clamping member and the second clamping member, and the first limiting portion and the second limiting portion respectively abut against the side wall of the first clamping member and the second clamping member that are opposite to each other.
[0020] In some embodiments, the elastic member has insertion portions at both ends, and the first clamping member and the second clamping member have slots that match the insertion portions at the ends near the elastic member.
[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0023] Figure 1 This is an overall structural diagram of the bolt anti-rotation self-locking structure and its auxiliary tooling provided in the embodiments of this application;
[0024] Figure 2 A perspective view of the anti-loosening structural component provided in the embodiments of this application;
[0025] Figure 3 A three-dimensional structural diagram of the bolt provided in the embodiments of this application;
[0026] Figure 4 An assembly structure diagram of the anti-loosening structural component and bolts provided in the embodiments of this application;
[0027] Figure 5 A three-dimensional structural diagram of the auxiliary tooling provided in the embodiments of this application;
[0028] Figure 6 A three-dimensional structural diagram showing the cooperation between the auxiliary tooling and the anti-loosening structural component provided in the embodiments of this application;
[0029] Figure 7 A partially enlarged view showing the fit between the auxiliary tooling and the anti-loosening structural components provided in the embodiments of this application;
[0030] Figure 8 A perspective view of the tensioning assembly provided in the embodiments of this application;
[0031] Figure 9 A cross-sectional view of the auxiliary tooling provided in the embodiments of this application.
[0032] In the above image:
[0033] 100 Anti-loosening structural component; 110 Main body; 111 Mounting hole; 120 Limiting part; 130 Support part;
[0034] 200 Auxiliary tooling; 210 First clamping component; 211 Guide hole; 212 Limiting hole; 220 Second clamping component;
[0035] 230 Elastic element; 231 Insertion part;
[0036] 240 Tensioning assembly; 241 Tensioning shaft; 242 First limiting member; 243 Second limiting member;
[0037] 250 Cam assembly; 251 Cam; 252 Positioning shaft; 253 Bearing;
[0038] 260 Limit adjustment assembly; 261 Sliding part; 262 First limit part; 263 Second limit part;
[0039] 300 Bolt; 311 Nut; 312 Threaded Rod; 313 Flange Face;
[0040] 400 connector. Detailed Implementation
[0041] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.
[0042] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0043] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” as used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0044] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open and encompassing, that is, "including, but not limited to".
[0045] In the description of this specification, the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.
[0046] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.
[0047] In some routine experiments and experiments under special working conditions, bolt 300 may occasionally loosen and fail. Loosening of bolt 300 leads to loss of torque, which in turn affects the accuracy of experimental results and reduces the impact of materials or structures other than the verification items on the overall results and safety of the experiment. How to avoid loosening of bolt 300 is a technical problem that this application needs to solve.
[0048] To solve the above-mentioned technical problems, the first aspect of this utility model refers to... Figures 1 to 4 A bolt anti-rotation self-locking structure is provided. The bolt 300 has a flange face 313. The bolt anti-rotation self-locking structure includes an anti-loosening structural component 100. The anti-loosening structural component 100 includes a main body 110. The main body 110 has a mounting hole 111 that mates with the bolt 300.
[0049] At least two limiting portions 120 are provided on one side of the main body 110. The limiting portions 120 are used to bend and engage with the flange surface 313 when a bolt 300 is assembled in the mounting hole 111 of the main body 110, so that the two sides of the flange surface 313 are respectively press-fitted with the main body 110 and the limiting portions 120.
[0050] For details, please refer to Figure 3 The bolt 300 mainly consists of a threaded rod 312, a nut 311, and a flange face 313. The nut 311 and flange face 313 can be integrally formed and located at one end of the threaded rod 312. The design of the flange face 313 increases the contact area, thereby dispersing stress, eliminating the need for an additional washer, and improving assembly efficiency. For example, the bolt 300 can be a hexagonal flange bolt 300.
[0051] The anti-loosening structure can be made of metal, such as sheet metal. (See reference) Figure 2The anti-loosening structure includes a main body 110 and a limiting part 120. The main body 110 and the limiting part 120 can be integrally formed or connected and fixed by welding or other methods. The main body 110 has a mounting hole 111, into which the screw 312 of the bolt 300 can be fitted. At least two limiting portions 120 are provided on one side of the main body 110. When the screw 312 of the bolt 300 is fitted into the mounting hole 111, each limiting portion 120 can be bent and engaged with the flange face 313 of the bolt 300, causing the main body 110 and the limiting portions 120 to press against the two opposite end faces of the flange face 313. Specifically, the main body 110 presses against the lower end face of the flange face 313 (the end face of the flange face 313 away from the nut 311), and the limiting portions 120 press against the upper end face of the flange face 313 (the end face of the flange face 313 close to the nut 311). The limiting portions 120 and the main body 110 cooperate to form a clamping structure, pressing the flange face 313 between the main body 110 and the limiting portions 120 (see reference). Figure 4 This can effectively prevent bolt 300 from loosening and improve the stability of bolt 300 connection.
[0052] The number of limiting parts 120 in this embodiment is not particularly limited. Those skilled in the art can set the number according to actual needs, such as 2 to 3 limiting parts 120, so that each limiting part 120 can be pressed against different positions on the end face of the flange surface 313 near the nut 311, further improving the stability of the bolt 300 connection. For example, there are two limiting parts 120, which are symmetrically distributed on the same side of the main body 110, so that the two limiting parts 120 can be pressed against different positions on both sides of the upper end face of the flange surface 313. Through the symmetrical arrangement of the two limiting parts 120, the firmness of the connection between the anti-loosening structure 100 and the bolt 300 can be further improved, and the bolt 300 can be prevented from loosening.
[0053] The bolt anti-rotation self-locking structure provided by this utility model utilizes the cooperation between the anti-loosening structural component 100 and the flange surface 313 of the bolt 300 to prevent the bolt 300 from becoming loose or even failing, effectively achieving self-locking fixation of the bolt 300, improving the stability of the bolt 300 connection, and thus ensuring the accuracy of experimental results and the safety of mechanical equipment.
[0054] In some implementations, reference Figure 2 and Figure 4 The limiting portion 120 includes a limiting ring that bends and extends toward the side away from the main body portion 110.
[0055] Specifically, the limiting part 120 includes a bent and extended limiting ring. The annular design of the limiting ring can evenly distribute the pressing force, avoid local stress concentration, and protect the upper surface of the flange face 313. The inner diameter, thickness, or bending angle of the limiting ring can be adjusted to accommodate different specifications of flange face 313 bolts 300.
[0056] In some implementations, reference Figure 2 and Figure 4 A support portion 130 is provided between two adjacent limiting rings.
[0057] Specifically, when the bolt 300 is used to connect and fix the connector 400, such as the cover of a battery, the main body 110 of the anti-loosening structure 100 is fixed to the surface of the connector 400, and the support 130 can be fixed to the side of the connector 400. The bolt 300's thread 312 passes through the mounting hole 111 of the main body 110 and the connector 400 in sequence, and then the limiting part 120 is bent and engaged with the upper surface of the flange face 313. In this example, the anti-loosening structure 100 formed by the cooperation of the main body 110, the support 130, and the limiting part 120 can firmly connect the bolt 300 and the connector 400, preventing the bolt 300 from loosening.
[0058] The second aspect of this utility model, with reference to... Figure 1 , Figures 5 to 9 A bolt anti-rotation self-locking structure auxiliary tooling 200 is provided, which is used to assist the bolt anti-rotation self-locking structure in any embodiment of this application;
[0059] The auxiliary tooling 200 includes a first clamping member 210 and a second clamping member 220 disposed opposite to each other, and the first clamping member 210 and the second clamping member 220 are connected on the same side by an elastic member 230.
[0060] A tensioning assembly 240 is slidably disposed at one end of the first clamping member 210 and the second clamping member 220 away from the elastic member 230. The tensioning assembly 240 extends into the limiting part 120. The first clamping member 210 and the second clamping member 220 are used to rotate relative to the flange surface 313 so that the tensioning assembly 240 drives the limiting part 120 to bend and engage with the flange surface 313.
[0061] Specifically, the auxiliary tooling 200 is used to assist in bending the limiting part 120 of the anti-loosening structural component 100, so that the force on each limiting part 120 is consistent, thereby ensuring that the deformation degree of each limiting part 120 is consistent during the bending process, reducing structural feature damage caused by unnecessary factors, and making it easier to lock and fix the bolt 300.
[0062] The auxiliary tooling 200 includes a first clamping member 210 and a second clamping member 220 arranged opposite to each other. The first clamping member 210 and the second clamping member 220 have the same structure. The first clamping member 210 and the second clamping member 220 are connected by an elastic member 230. The elastic energy of the elastic member 230 is used to realize the relative opening and closing movement of the first clamping member 210 and the second clamping member 220 to adapt to the locking and fixing requirements of bolts 300 of different sizes. Both the first clamping member 210 and the second clamping member 220 are provided with a tensioning component 240 at the end away from the elastic member 230. The tensioning component 240 extends into the limiting part 120. The first clamping member 210 and the second clamping member 220 can rotate relative to the corresponding main body 110. During the rotation, the tensioning component 240 causes the corresponding limiting part 120 to bend and deform and press against the upper end face of the flange surface 313. The limiting part 120 and the main body 110 cooperate to form a clamping structure, pressing the flange surface 313 between the main body 110 and the limiting part 120, which can effectively prevent the bolt 300 from loosening and improve the stability of the bolt 300 connection.
[0063] In some implementations, reference Figures 5 to 7 The first clamping member 210 and the second clamping member 220 are rotatably provided with a cam assembly 250 at the end away from the elastic member 230, and the tensioning assembly 240 is located between the cam assembly 250 and the elastic member 230, and the cam assembly 250 and the tensioning assembly 240 are in rolling engagement.
[0064] The first clamping member 210 and the second clamping member 220 rotate relative to the corresponding cam assembly 250 to drive the tensioning assembly 240 to move along the surface of the cam assembly 250 toward the side away from the flange surface 313.
[0065] Specifically, the cam assembly 250 and the tensioning assembly 240 are in rolling engagement. When the first clamping member 210 and the second clamping member 220 rotate relative to the corresponding cam assembly 250 (rotation angle of 0~180°), the tensioning assembly 240 can move along the surface of the cam assembly 250 and toward the side away from the main body 110, thereby causing the limiting part 120 to deform under the action of the tensioning assembly 240 and press against the upper end face of the flange surface 313. In this example, the cam assembly 250 can change the direction and magnitude of the force applied by the tensioning assembly 240 to the limiting part 120, thereby achieving the purpose of progressive locking and rapid release.
[0066] In some implementations, reference Figures 5 to 7The cam assembly 250 includes a fixedly connected cam 251 and a positioning shaft 252. The positioning shaft 252 passes through the first clamping member 210 or the second clamping member 220 and is press-fitted with the surface of the limiting part 120. The cam 251 is located outside the side wall of the first clamping member 210 or the second clamping member 220 on the side away from the limiting part 120.
[0067] Specifically, the lower surface of the cam 251 is a horizontal surface, the upper surface of the cam 251 is a curved surface, and a positioning shaft 252 is fixed on the side of the cam 251. The positioning shaft 252 can be a solid steel column. The positioning shaft 252 is rotatably mounted on the first clamping member 210 and the second clamping member 220 through the bearing 253 and extends into the side wall of the first clamping member 210 and the second clamping member 220. The positioning shaft 252 can be pressed against the upper surface of the limiting part 120. The cam 251 is located outside the side wall of the first clamping member 210 and the second clamping member 220. During the operation of the auxiliary tooling 200, the lower surface of the cam 251 can fit against the connector 400, and the first clamping member 210 and the second clamping member 220 can rotate relative to the corresponding cam 251. During the rotation, the tensioning assembly 240 can move along the surface of the cam 251 and move away from the positioning shaft 252, thereby causing the tensioning assembly 240 to drive the limiting part 120 to bend and deform and fasten to the upper end face of the flange surface 313.
[0068] In some implementations, reference Figures 5 to 8 The tensioning assembly 240 includes a tensioning shaft 241, and a first limiting member 242 and a second limiting member 243 are provided on both sides of the tensioning shaft 241 along its axial direction;
[0069] The first clamping member 210 and the second clamping member 220 are provided with guide holes 211 on the side near the cam assembly 250. The tensioning shaft 241 is slidably assembled in the guide hole 211. The first limiting member 242 and the second limiting member 243 are located on the inner and outer sides of the guide hole 211. The first limiting member 242 is in rolling engagement with the cam assembly 250. The tensioning shaft 241 extends out of the second limiting member 243 and can extend into the limiting part 120.
[0070] Specifically, the tensioning assembly 240 includes a tensioning shaft 241 and a first limiting member 242 and a second limiting member 243 located on both sides of the tensioning shaft 241. The first limiting member 242 and the second limiting member 243 can be circular limiting plates. The first clamping member 210 and the second clamping member 220 have guide holes 211 extending along their own extension direction inside. The guide holes 211 penetrate the side walls of the first clamping member 210 and the second clamping member 220. The positioning shaft 252 can pass through the guide holes 211 and clamp the first limiting member 242 and the second limiting member 243 on the inner and outer sides of the first clamping member 210 or the second clamping member 220, so that the positioning shaft 252 can slide horizontally along the guide holes 211. The first limiting member 242 rolls with the surface of the cam 251. When the first limiting member 242 slides relative to the surface of the cam 251, it causes the tensioning shaft 241 to move within the guide holes 211 of the first clamping member 210 and the second clamping member 220. When the tensioning shaft 241 moves in the guide hole 211 toward the side away from the flange surface 313, it has a tensioning effect on the limiting part 120. As the rotation angle of the first clamping member 210 and the second clamping member 220 increases, the limiting part 120 is pulled tighter.
[0071] In this embodiment, the positioning shaft 252 can press against the outer surface of the limiting part 120, and the tensioning shaft 241 can extend into the limiting part 120. The first clamping member 210 and the second clamping member 220 rotate upward relative to the cam assembly 250, so that the limiting part 120 can be folded upward with the position where the positioning shaft 252 presses against the limiting part 120 as the base point and fastened to the upper end face of the flange surface 313, pressing the flange surface 313 between the main body part 110 and the limiting part 120, which can effectively prevent the bolt 300 from loosening and improve the stability of the bolt 300 connection.
[0072] In some implementations, reference Figure 5 , Figure 6 and Figure 9 Both the first clamping member 210 and the second clamping member 220 are provided with limiting holes 212. The auxiliary tooling 200 also includes a limiting adjustment component 260, which is slidably assembled in the limiting holes 212 of the first clamping member 210 and the second clamping member 220 to adjust the opening degree of the first clamping member 210 and the second clamping member 220.
[0073] Specifically, the first clamping member 210 and the second clamping member 220 have limiting holes 212 extending through them on the side near the elastic member 230. The limiting holes 212 and the guide holes 211 are spaced apart and extend in the same direction. A limiting adjustment component 260 is slidably fitted in the limiting holes 212 of the first clamping member 210 and the second clamping member 220. The opening degree of the first clamping member 210 and the second clamping member 220 can be adjusted by the horizontal movement of the limiting adjustment component 260 in the limiting holes 212. This can accommodate anti-loosening structural members 100 of different sizes. After adjusting to a suitable opening degree, the first clamping member 210 and the second clamping member 220 can be kept in that open or closed state, thus playing a fixing role.
[0074] In this example, the elastic element 230 has high elastic potential energy, which can keep the first clamping element 210 and the second clamping element 220 in a taut state. The limit adjustment component 260 can move back and forth along the first clamping element 210 and the second clamping element 220 within a certain range. The limit adjustment component 260 can be locked at any position by relying on the friction of the first clamping element 210 and the second clamping element 220, thereby changing the distance between the first clamping element 210 and the second clamping element 220 on the side close to the cam assembly 250, so as to meet the assembly requirements of anti-loosening structural components 100 of different sizes.
[0075] In some implementations, reference Figure 5 , Figure 6 and Figure 9 The limiting adjustment component 260 includes a sliding part 261. A first limiting part 262 and a second limiting part 263 are provided on both sides of the sliding part 261. The sliding part 261 slides through the limiting holes 212 on the first clamping member 210 and the second clamping member 220, and the first limiting part 262 and the second limiting part 263 respectively abut against the side wall of the first clamping member 210 and the second clamping member 220 that are opposite to each other.
[0076] Specifically, the sliding part 261 can be a crossbeam. A first limiting part 262 and a second limiting part 263 are fixedly provided at both ends of the sliding part 261. The sliding part 261 passes sequentially through the limiting holes 212 of the first clamping member 210 and the second clamping member 220, and the first limiting part 262 and the second limiting part 263 respectively abut against the outer sidewalls of the first clamping member 210 and the second clamping member 220 opposite to each other. In this example, by moving the sliding part 261 back and forth within the limiting hole 212, the opening and closing degree of the first clamping member 210 and the second clamping member 220 can be adjusted.
[0077] In some implementations, reference Figure 9The elastic member 230 has insertion portions 231 at both ends, and the first clamping member 210 and the second clamping member 220 are each provided with a slot that matches the insertion portion 231 at the end near the elastic member 230.
[0078] Specifically, the elastic element 230 can be a spring plate, with insertion portions 231 at both ends. The first clamping member 210 and the second clamping member 220 have insertion grooves that cooperate with the insertion portions 231. The insertion portions 231 can be inserted into the insertion grooves, which facilitates the disassembly and installation of the first clamping member 210 and the second clamping member 220 with the elastic element 230, and helps the elastic element 230 release strong elastic potential energy.
[0079] The method of using the bolt anti-rotation self-locking structure auxiliary tooling 200 provided in this application embodiment includes:
[0080] First, fix the anti-loosening structure 100 to a suitable position on the connector 400, such as the cover, and bend the limiting part 120 of the anti-loosening structure 100 so that the screw 312 of the bolt 300 can pass through the mounting hole 111 of the anti-loosening structure 100. Pass the screw 312 of the bolt 300 through the washer (optional), the mounting hole 111 and the connector 400 and tighten it. Use a torque wrench to connect the nut 311 to increase the torque of the bolt 300 to the design range and ensure that there is no stripping or other issues.
[0081] Take out the auxiliary tooling 200, place the positioning shaft 252 of the cam assembly 250 against the upper surface of the limiting part 120, and pass the tensioning shaft 241 through the inside of the limiting part 120 to initially determine the initial position.
[0082] By forcefully squeezing the first clamping member 210 and the second clamping member 220, the elastic member 230 is deformed, and the first clamping member 210 and the second clamping member 220 move closer to each other. The friction between the limiting adjustment component 260 and the first clamping member 210 and the second clamping member 220 decreases. By moving the limiting adjustment component 260 back and forth, the first clamping member 210 and the second clamping member 220 reach the required opening and closing degree.
[0083] The first clamping member 210 and the second clamping member 220 are lifted to rotate around the axis of the positioning shaft 252 of the cam assembly 250. During the rotation, the tensioning member 240 slides relative to the surface of the cam 251 of the cam assembly 250, and the tensioning member 240 moves back and forth within the guide hole 211 of the first clamping member 210 and the second clamping member 220. As the rotation angle increases, the revolution radius of the tensioning shaft 241 of the tensioning member 240 becomes larger and larger. Under the restriction of the guide hole 211, the tensioning shaft 241 moves away from the positioning shaft 252 and drives the limiting part 120 to bend and deform and fasten to the upper end face of the flange surface 313 of the bolt 300, pressing the flange surface 313 between the main body 110 and the limiting part 120, thus completing the locking and fixing of the bolt 300.
[0084] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A bolt anti-rotation self-locking structure, wherein the bolt (300) has a flange face (313), characterized in that, The bolt anti-rotation self-locking structure includes an anti-loosening structural component (100), the anti-loosening structural component (100) includes a main body (110), and the main body (110) has a mounting hole (111) that mates with the bolt (300). At least two limiting portions (120) are provided on one side of the main body (110). The limiting portions (120) are used to bend and engage with the flange face (313) when a bolt (300) is installed in the mounting hole (111) of the main body (110), so that the two sides of the flange face (313) are respectively press-fitted with the main body (110) and the limiting portions (120).
2. The bolt anti-rotation self-locking structure according to claim 1, characterized in that, The limiting portion (120) includes a limiting ring that bends and extends toward the side away from the main body portion (110).
3. The bolt anti-rotation self-locking structure according to claim 2, characterized in that, A support portion (130) is provided between two adjacent limiting rings.
4. An auxiliary tooling (200) for a bolt anti-rotation self-locking structure, characterized in that, The auxiliary tooling (200) is used to assist the bolt anti-rotation self-locking structure according to any one of claims 1-3; The auxiliary tooling (200) includes a first clamping member (210) and a second clamping member (220) arranged opposite to each other, and the first clamping member (210) and the second clamping member (220) are connected on the same side by an elastic member (230); The first clamping member (210) and the second clamping member (220) are slidably provided with a tensioning assembly (240) at the ends away from the elastic member (230). The tensioning assembly (240) extends into the limiting part (120). The first clamping member (210) and the second clamping member (220) are used to rotate relative to the flange surface (313) so that the tensioning assembly (240) drives the limiting part (120) to bend and engage with the flange surface (313).
5. The auxiliary tooling (200) for the bolt anti-rotation self-locking structure according to claim 4, characterized in that, The first clamping member (210) and the second clamping member (220) are rotatably provided with a cam assembly (250) at the end away from the elastic member (230), and the tensioning assembly (240) is located between the cam assembly (250) and the elastic member (230), and the cam assembly (250) and the tensioning assembly (240) are in rolling engagement; The first clamping member (210) and the second clamping member (220) rotate relative to the corresponding cam assembly (250) to drive the tensioning assembly (240) to move along the surface of the cam assembly (250) toward the side away from the flange surface (313).
6. The auxiliary tooling (200) for the bolt anti-rotation self-locking structure according to claim 5, characterized in that, The cam assembly (250) includes a fixedly connected cam (251) and a positioning shaft (252), the positioning shaft (252) passing through the first clamping member (210) or the second clamping member (220) and pressing against the surface of the limiting part (120), the cam (251) being located outside the side wall of the first clamping member (210) or the second clamping member (220) away from the limiting part (120).
7. The auxiliary tooling (200) for the bolt anti-rotation self-locking structure according to claim 5, characterized in that, The tensioning assembly (240) includes a tensioning shaft (241), and the tensioning shaft (241) is provided with a first limiting member (242) and a second limiting member (243) on both sides along its axial direction. The first clamping member (210) and the second clamping member (220) are provided with guide holes (211) on the side near the cam assembly (250). The tensioning shaft (241) is slidably assembled in the guide hole (211). The first limiting member (242) and the second limiting member (243) are located on the inner and outer sides of the guide hole (211). The first limiting member (242) is in rolling cooperation with the cam assembly (250). The tensioning shaft (241) extends out of the second limiting member (243) and can extend into the limiting part (120).
8. The auxiliary tooling (200) for the bolt anti-rotation self-locking structure according to any one of claims 4-7, characterized in that, Both the first clamping member (210) and the second clamping member (220) are provided with limiting holes (212). The auxiliary tooling (200) also includes a limiting adjustment component (260). The limiting adjustment component (260) is slidably assembled in the limiting holes (212) of the first clamping member (210) and the second clamping member (220) to adjust the opening degree of the first clamping member (210) and the second clamping member (220).
9. The auxiliary tooling (200) for the bolt anti-rotation self-locking structure according to claim 8, characterized in that, The limiting adjustment assembly (260) includes a sliding part (261), and a first limiting part (262) and a second limiting part (263) are provided on both sides of the sliding part (261). The sliding part (261) slides through the limiting holes (212) on the first clamping member (210) and the second clamping member (220), and the first limiting part (262) and the second limiting part (263) respectively abut against the side wall of the first clamping member (210) and the second clamping member (220) opposite to each other.
10. The auxiliary tooling (200) for the bolt anti-rotation self-locking structure according to any one of claims 4-7, characterized in that, The elastic member (230) has insertion portions (231) at both ends, and the first clamping member (210) and the second clamping member (220) are each provided with a slot that matches the insertion portion (231) at the end near the elastic member (230).