Auxiliary nut fastening device
By designing a nut-assisted fastening device and using an arc-shaped surface and pressure-applying components to fix the bolts, the problems of complex operation and damage risk during the replacement of power cable tray connection lines were solved, achieving efficient and safe connection line replacement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HONGYUN HONGHE TOBACCO (GRP) CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-08
AI Technical Summary
During the replacement of power cable tray connection lines, existing tools are cumbersome to operate, easily damaging cables and bolts, and the replacement steps are complex, making it difficult to complete efficiently.
Design a nut-assisted fastening device, including a fastening component and a pressure component. The curved surfaces of the first and second fasteners form a receiving space. The pressure component is used to press the bolt, preventing the bolt from rotating and directly fastening the nut to the bolt.
It simplifies the replacement process of power cable tray connections, improves work efficiency, reduces the risk of cable and bolt damage, and ensures ease and safety of operation.
Smart Images
Figure CN224209836U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power distribution maintenance tools, and in particular to a nut-assisted tightening device. Background Technology
[0002] Electrical cable tray connectors provide electrical continuity and grounding protection. After prolonged use, the metal parts of these connectors typically require replacement due to rust, corrosion, mechanical stress damage, and increased contact resistance. Furthermore, to prevent the sharp ends or protruding parts of bolts from directly contacting the cable insulation, or to avoid the bolt tips puncturing the cable sheath and causing short circuits or leakage risks due to cable movement, temperature changes, or cable tray expansion and contraction / vibration, the bolt head (the hexagonal end) is generally located inside the cable tray, while the nut is located outside. Therefore, during cable tray connector replacement, it is necessary to open the cable tray and use the handle to tighten the bolt head from inside the tray. This allows the nut outside the tray to be secured to the bolt, thus re-fixing the cable tray connector to the bolt.
[0003] The aforementioned replacement process requires opening the power cable tray, which is cumbersome and increases the risk of damage to the cables inside. Furthermore, directly clamping the bolt's shaft with tools such as wrenches and pliers can damage the external threads, affecting the tightening of the nut. Therefore, a nut-assisted tightening device is urgently needed to solve these problems. Utility Model Content
[0004] The purpose of this utility model is to provide a nut-assisted tightening device for assisting in tightening the nuts on the outside of the power cable tray, simplifying the replacement steps of the power cable tray connection wires, improving work efficiency, and reducing the risk of damage to the internal cables of the power cable tray during the replacement of connection wires, as well as the risk of damage to the external threads of the bolt rod.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] This utility model provides a nut-assisted fastening device for fixing a bolt during the process of fastening a nut to a bolt. The nut-assisted fastening device includes a fastening component and a pressure-applying component. The fastening component includes a first fastener and a second fastener spaced apart along a first direction and extending along a second direction. The first fastener has a first arc-shaped surface on the side facing the second fastener, and the second fastener has a second arc-shaped surface on the side facing the first fastener. A first receiving space is formed between the first arc-shaped surface and the second arc-shaped surface, and the bolt passes through the first receiving space along a second direction. The first direction is a vertical direction, and the first direction is set at an angle to the second direction. The pressure-applying component is sleeved on the fastening component. The centerline of the pressure-applying component is parallel to the axis of the bolt. The pressure-applying component enables the first fastener and the second fastener to move toward the axis of the bolt to press the bolt.
[0007] In some embodiments, the pressure application assembly includes a pressure ring and an adjusting member; the pressure ring is simultaneously fitted onto the first fastener and the second fastener; the pressure ring includes an open end and a closed end; the adjusting member passes through the open end; the adjusting member enables the inner diameter of the pressure ring to decrease, thereby enabling the pressure ring to press against the first fastener and the second fastener, causing the first fastener and the second fastener to move in a direction closer to the axis of the bolt.
[0008] In some embodiments, the opening end of the pressure ring is symmetrically provided with a first connecting portion and a second connecting portion, both of which extend radially along the pressure ring; the adjusting member passes through both the first connecting portion and the second connecting portion.
[0009] In some embodiments, the first fastener includes a plurality of first fastening sub-parts arranged along the second direction; the plurality of first fastening sub-parts are arranged in increasing or decreasing order of size in the first direction; and the pressure ring is sleeved on the first fastening sub-parts.
[0010] In some embodiments, the second fastener includes a plurality of second fastening sub-parts arranged along the second direction; the plurality of second fastening sub-parts are arranged in increasing or decreasing order of size in the first direction.
[0011] The plurality of second fastening sub-parts and the plurality of first fastening sub-parts are symmetrically arranged with the axis of the bolt as the axis of symmetry; the pressure ring is sleeved on the first fastening sub-parts and the second fastening sub-parts.
[0012] In some embodiments, the number of pressure-applying components is multiple, and the multiple pressure-applying components are arranged at intervals along the second direction.
[0013] In some embodiments, the cross-section of the fastening component is semi-elliptical; the direction of the cross-section is perpendicular to the second direction and parallel to the first direction.
[0014] In some embodiments, the cross-section of the fastening component is polygonal; the direction of the cross-section is perpendicular to the second direction and parallel to the first direction.
[0015] In some embodiments, the nut-assisted fastening device further includes: a liner assembly sleeved on the bolt; the liner assembly extending through the first receiving space along the second direction.
[0016] In some embodiments, the lining assembly includes a first lining member and a second lining member spaced apart along the first direction and extending along the second direction; the first lining member has a third arcuate surface on the side facing the second lining member, and the second lining member has a fourth arcuate surface on the side facing the first lining member; a second receiving space is formed between the third arcuate surface and the fourth arcuate surface, and the bolt passes through the second receiving space along the second direction.
[0017] The beneficial effects of this utility model are:
[0018] This utility model provides a nut-assisted fastening device, which includes a fastening assembly comprising a first fastener and a second fastener extending in a second direction. The first fastener and the second fastener are spaced apart in a first direction. A first arc-shaped surface is provided on the first fastener, and a second arc-shaped surface is provided on the second fastener, so that the first arc-shaped surface and the second arc-shaped surface form a first receiving space. The bolt is inserted into the first receiving space in the second direction. At the same time, a pressure component is fitted on the fastening assembly, and the center line of the pressure component is set parallel to the axis of the bolt. The pressure component can move the first fastener and the second fastener toward the bolt axis to tighten the bolt. This allows for a flexible arrangement when replacing power cable tray connections and tightening nuts onto bolts. First, the bolt is inserted into the first receiving space between the first and second fasteners. Alternatively, the fastening assembly is fitted onto the bolt's outer surface through the first receiving space. Then, a pressure-applying component fitted onto the fastening assembly (i.e., the first and second fasteners) applies pressure in the direction of the bolt's axis, pushing the first and second fasteners closer to the bolt's axis. With the gradual application of pressure from the pressure-applying component, the first arc-shaped surface on the first fastener and the second fastener... The second arc-shaped surface on the fastener abuts against the outer surface of the bolt. As the pressure-applying component continues to apply pressure, the first and second arc-shaped surfaces press firmly against the outer surface of the bolt. This restricts the rotation of the fastening component around the bolt's axis (e.g., manually or using tools like wrenches or pliers). The friction between the first and second arc-shaped surfaces and the outer surface of the bolt further restricts the bolt's rotation around its own axis, effectively fixing it in place. When a nut is then tightened onto the bolt, the bolt will not rotate synchronously with the nut, thus completely securing the nut. This process of tightening the nut onto the bolt eliminates the need to open the power cable tray to fix the bolt from within, simplifying the operation, simplifying the replacement of power cable tray connections, improving work efficiency, and reducing the risk of damage to the cables inside the power cable tray during connection replacement. In addition, when using the above-mentioned nut-assisted fastening device to fix the bolt, the first arc-shaped surface and the second arc-shaped surface are in direct contact with the outer surface of the bolt. Both have an arc-shaped structure that matches the arc-shaped outer surface of the bolt. This allows the clamping force applied to the outer surface of the bolt to be evenly distributed on the outer surface of the bolt, avoiding excessive stress concentration at a certain point on the outer surface of the bolt and reducing the risk of damage to the external threads of the bolt shank. Attached Figure Description
[0019] Figure 1 This is a structural diagram of a nut-assisted fastening device provided in a specific embodiment of this utility model;
[0020] Figure 2 This is a structural diagram of a fastening assembly provided in a specific embodiment of the present utility model;
[0021] Figure 3 This is a structural diagram of a pressure application component provided in a specific embodiment of this utility model;
[0022] Figure 4 This is another structural diagram of a pressure application component provided in a specific embodiment of this utility model;
[0023] Figure 5 This is a structural diagram of a fastening assembly and an inner liner assembly provided in a specific embodiment of this utility model;
[0024] Figure 6 This is another structural diagram of a fastening component and an inner lining component provided in a specific embodiment of this utility model.
[0025] In the picture:
[0026] 1. Fastening assembly; 11. First fastener; 111. First arcuate surface; 112. First fastening sub-part; 12. Second fastener; 121. Second arcuate surface; 122. Second fastening sub-part; 13. First receiving space; 2. Pressure application assembly; 21. Pressure ring; 211. Open end; 212. Closed end; 213. First connecting part; 214. Second connecting part; 22. Adjusting member; 3. Lining assembly; 31. First liner; 311. Third arcuate surface; 32. Second liner; 321. Fourth arcuate surface; 33. Second receiving space; 10. Bolt; 20. Nut;
[0027] X1, first direction; X2, second direction. Detailed Implementation
[0028] The present invention 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 present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0032] like Figure 1 As shown, this embodiment provides a nut-assisted fastening device, which includes a fastening component 1 and a pressure application component 2.
[0033] like Figure 2 As shown, the fastening assembly 1 includes a first fastener 11 and a second fastener 12. The first fastener 11 and the second fastener 12 are spaced apart along a first direction X1 and extend along a second direction X2. Here, the first direction X1 is vertical, and the second direction X2 forms an angle with the first direction X1, for example, 90°. In other words, the first fastener 11 and the second fastener 12 are spaced apart vertically and both extend horizontally. The first fastener 11 has a first arcuate surface 111 on the side facing the second fastener 12. This first arcuate surface 111 is, for example, a semi-circular arcuate surface or a minor arcuate surface. Similarly, the second fastener 12 has a second arcuate surface 121 on the side facing the first fastener 11. Likewise, this second arcuate surface 121 is, for example, a semi-circular arcuate surface or a minor arcuate surface. That is, with... Figure 1 Taking the shown view as an example, the lower surface of the first fastener 11 is provided on the first arc-shaped surface 111, and the upper surface of the second fastener 12 is provided with the second arc-shaped surface 121.
[0034] A first receiving space 13 can be formed between the first arc-shaped surface 111 and the second arc-shaped surface 121. The bolt 10 passes through the first receiving space 13 along the second direction X2. It is easy to understand that the first arc-shaped surface 111 should be directly opposite the second arc-shaped surface 121 in the first direction X1, and both the first arc-shaped surface 111 and the second arc-shaped surface 121 extend along the second direction X2. In this way, the combination of the first arc-shaped surface 111 and the second arc-shaped surface 121 can form a cylindrical space extending along the second direction X2, thus forming the first receiving space 13, allowing the bolt 10 to pass through the first receiving space 13 along the second direction X2.
[0035] like Figure 1 As shown, the pressure-applying component 2 is sleeved on the fastening component 1, and the centerline of the pressure-applying component 2 is parallel to the axis of the bolt 10. This ensures that the pressure applied by the pressure-applying component 2 is directed towards the axis of the bolt 10. The pressure-applying component 2 enables the first fastener 11 and the second fastener 12 to move towards the axis of the bolt 10, thereby tightening the bolt 10. That is, the pressure-applying component 2 applies pressure to the first fastener 11 and the second fastener 12 in the direction of the bolt 10 axis, pushing the first fastener 11 and the second fastener 12 to move towards the axis of the bolt 10. When the first fastener 11 and the second fastener 12 respectively contact the bolt 10, the first arcuate surface 111 on the first fastener 11 and the second arcuate surface 121 on the second fastener 12 press together to tighten the bolt 10.
[0036] Therefore, the nut-assisted fastening device provided in this embodiment, by setting a fastening assembly 1 including a first fastener 11 and a second fastener 12 extending along a second direction X2, the first fastener 11 and the second fastener 12 are spaced apart along a first direction X1, a first arc-shaped surface 111 is provided on the first fastener 11 and a second arc-shaped surface 121 is provided on the second fastener 12, so that the first arc-shaped surface 111 and the second arc-shaped surface 121 form a first receiving space 13, and the bolt 10 is inserted into the first receiving space 13 along the second direction X2; at the same time, a pressure assembly 2 is fitted on the fastening assembly 1, and the center line of the pressure assembly 2 is set parallel to the axis of the bolt 10. The pressure assembly 2 can make the first fastener 11 and the second fastener 12 move toward the axis of the bolt 10 to press the bolt 10. This allows for the following process: when replacing the power cable tray connection and needing to tighten the nut 20 onto the bolt 10, the bolt 10 is first inserted into the first receiving space 13 between the first fastener 11 and the second fastener 12, or the fastening assembly 1 is fitted onto the outer surface of the bolt 10 through the first receiving space 13. Then, the pressure applying component 2 fitted onto the fastening assembly 1 applies pressure in the direction of the bolt 10 axis to the fastening assembly 1 (i.e., the first fastener 11 and the second fastener 12), pushing the first fastener 11 and the second fastener 12 to move closer to the bolt 10 axis. With the gradual application of pressure from the pressure applying component 2, the first arc-shaped surface 111 on the first fastener 11 and the second fastener 12... The second arc-shaped surface 121 on the bolt 10 abuts against the outer surface of the bolt 10. When the pressure-applying component 2 continues to apply pressure, the first arc-shaped surface 111 and the second arc-shaped surface 121 press against the outer surface of the bolt 10. This restricts the rotation of the fastening component 1 around the axis of the bolt 10 (e.g., manually or using tools such as wrenches or pliers). The friction between the first arc-shaped surface 111 and the second arc-shaped surface 121 and the outer surface of the bolt 10 restricts the bolt 10 from rotating around its own axis, thus fixing the bolt 10. When the nut 20 is then tightened onto the bolt 10, the bolt 10 will not rotate synchronously with the nut 20, thereby completely tightening the nut 20 onto the bolt 10. In the process of tightening the nut 20 onto the bolt 10, it is not necessary to open the power cable tray to fix the bolt 10 from inside the power cable tray. This operation is convenient, simplifies the replacement steps of the power cable tray connection wires, improves work efficiency, and reduces the risk of damage to the internal cables of the power cable tray during the replacement of connection wires. In addition, when using the above-mentioned nut-assisted fastening device to fix the bolt 10, the first arc-shaped surface 111 and the second arc-shaped surface 121 are in direct contact with the outer surface of the bolt 10. Both have an arc-shaped structure, which is adapted to the arc-shaped outer surface of the bolt 10. This allows the clamping force applied to the outer surface of the bolt 10 to be evenly distributed on the outer surface of the bolt 10, avoiding excessive stress concentration at a certain point on the outer surface of the bolt 10, and reducing the risk of damage to the external threads of the bolt 10 shank.
[0037] In some embodiments, such as Figure 3 , Figure 4 As shown, the pressure-applying assembly 2 includes a pressure ring 21 and an adjusting member 22. The pressure ring 21 is simultaneously fitted onto the first fastener 11 and the second fastener 12. The pressure ring 21 includes an open end 211 and a closed end 212; in other words, the pressure ring 21 has a "U"-shaped structure or a "C"-shaped structure.
[0038] The adjusting member 22, for example a screw, passes through the open end 211 of the pressure ring 21. This adjusting member 22 reduces the inner diameter of the pressure ring 21, thereby allowing the pressure ring 21 to press against the first fastener 11 and the second fastener 12, causing the first fastener 11 and the second fastener 12 to move towards the axis of the bolt 10. Exemplarily, the pressure ring 21 has a "U"-shaped structure, and the adjusting member 22 is a screw passing through the open end 211 of the "U"-shaped structure. When the adjusting member 22 is tightened, the opening degree (i.e., the size of the opening) of the open end 211 of the "U"-shaped structure decreases, thereby reducing the overall inner diameter of the pressure ring 21. This allows the pressure ring 21 to press against the first fastener 11 and the second fastener 12, causing the first fastener 11 and the second fastener 12 to move towards the axis of the bolt 10. The above configuration enables the pressure ring 21 to apply pressure to the first fastener 11 and the second fastener 12, thereby tightening the bolt 10. The structure is simple and easy to install and use.
[0039] In some embodiments, such as Figure 4 As shown, the opening end 211 of the pressure ring 21 is symmetrically provided with a first connecting portion 213 and a second connecting portion 214. Both the first connecting portion 213 and the second connecting portion 214 extend radially along the pressure ring 21; in other words, the extending direction of the first connecting portion 213 and the second connecting portion 214 points towards the outer peripheral surface of the pressure ring 21. The adjusting member 22 passes through both the first connecting portion 213 and the second connecting portion 214. This arrangement provides an installation position for the adjusting member 22, ensuring that the body of the pressure ring 21 can be completely fitted onto the fastening assembly 1, making the clamping force applied by the pressure ring 21 to the fastening assembly 1 more uniform.
[0040] In some embodiments, such as Figure 1As shown, the first fastener 11 includes a plurality of first fastening sub-parts 112 arranged along the second direction X2. The plurality of first fastening sub-parts 112 are arranged with increasing or decreasing dimensions in the first direction X1, and a pressure ring 21 is fitted onto the first fastening sub-parts 112. In other words, the first fastener 11 is arranged in a stepped shape, and the pressure ring 21 is fitted onto the stepped structure. This arrangement allows the fastening assembly 1 to be applied to bolts 10 of different diameters; that is, when the diameter of the bolt 10 increases or decreases, the pressure ring 21 can be fitted onto the smaller or larger first fastening sub-parts 112, thus adapting to bolts 10 of different diameters and improving the applicability of the nut-assisted fastening device.
[0041] In some embodiments, such as Figure 1 As shown, the second fastener 12 includes a plurality of second fastening sub-parts 122 arranged along the second direction X2. The plurality of second fastening sub-parts 122 are arranged with increasing or decreasing dimensions in the first direction X1. The plurality of second fastening sub-parts 122 and the plurality of first fastening sub-parts 112 are arranged symmetrically about the axis of the bolt 10. The pressure ring 21 is sleeved on the first fastening sub-parts 112 and the second fastening sub-parts 122. In other words, the second fastener 12 is also stepped, and the stepped structure on the second fastener 12 is symmetrical to the stepped structure of the first fastener 11 mentioned above. The pressure ring 21 is sleeved on both the stepped structure of the first fastener 11 and the stepped structure of the second fastener 12. This configuration allows the fastening assembly 1 to be used with bolts 10 of different diameters. Specifically, when the diameter of the bolt 10 increases or decreases, the pressure ring 21 can be fitted onto the smaller or larger first fastening part 112 and the second fastening part 122, thus accommodating bolts 10 of different diameters and further improving the applicability of the aforementioned nut-assisted fastening device. Simultaneously, with this configuration, when the pressure ring 21 is simultaneously fitted onto the first fastening part 112 and the second fastening part 122, the pressure ring 21 can also be positioned at the upper limit of the adjacent first fastening part 112 and the second fastening part 122 in the second direction X2, which to a certain extent prevents the pressure ring 21 from shifting, ensuring the reliability of the aforementioned nut-assisted fastening device during use.
[0042] In some embodiments, such as Figure 1As shown, the number of pressure-applying components 2 can be set to multiple, for example, 2 to 4 pressure-applying components can be set, and the specific number can be adjusted according to actual application requirements. Multiple pressure-applying components 2 are arranged at intervals along the second direction X2. This multi-point distribution allows for the application of balanced clamping force to the fastening component 1 from multiple locations, effectively improving the clamping capacity of the fastening component 1 on the bolt 10. Multiple pressure-applying components 2 act independently on different parts of the fastening component 1, ensuring a more uniform clamping force and avoiding localized stress concentration, thereby improving the overall structural strength and stability. This multi-point pressure-applying design not only significantly improves the fixing effect of the nut-assisted fastening device on the bolt 10, but also enhances the stability and reliability of the overall structure. Through the coordinated work of multiple pressure-applying components 2, unevenness during the pressure application process can be effectively reduced, ensuring the reliability and safety of the bolt 10 fastening.
[0043] In some embodiments, such as Figure 5 As shown, the cross-sectional shape of the fastening component 1 is semi-elliptical. The direction of this cross-section is perpendicular to the second direction X2 and parallel to the first direction X1. By setting it in this way, the fastening component 1 has a flat structure, which makes it convenient for workers to use tools (such as pliers) to restrict the rotation of the fastening component 1 around the axis of the bolt 10, thereby improving the practicality of the nut-assisted fastening device.
[0044] In some embodiments, such as Figure 6 As shown, the cross-sectional shape of the fastening component 1 is polygonal. The direction of this cross-section is perpendicular to the second direction X2 and parallel to the first direction X1. By setting it in this way, the fastening component 1 is formed into a regular hexagonal prism structure (similar to the head of the bolt 10), which makes it convenient for workers to use tools (such as wrenches) to restrict the rotation of the fastening component 1 around the axis of the bolt 10, thereby improving the practicality of the nut-assisted fastening device.
[0045] In some embodiments, such as Figure 1 As shown, the aforementioned nut-assisted fastening device also includes an inner liner assembly 3. This inner liner assembly 3 is sleeved on the bolt 10; in other words, it employs an embedded sleeve structure, tightly fitting the shank portion of the bolt 10. The inner liner assembly 3 extends along the second direction X2 within the first receiving space 13 of the fastening assembly 1. The material of the inner liner assembly 3 can be a rigid thermoplastic, specifically engineering plastics such as PVC (polyvinyl chloride), PE (polyethylene), or PMMA (polymethyl methacrylate, i.e., acrylic). These materials possess good wear resistance, corrosion resistance, and moderate hardness, ensuring structural strength while preventing wear on the bolt 10.
[0046] Through the above-described configuration, the inner liner assembly 3 can be tightly fitted with the bolt 10 rod, significantly increasing the coefficient of friction between the fastening assembly 1 and the bolt 10, thereby enhancing the clamping capacity of the aforementioned nut-assisted fastening device on the bolt 10. Secondly, the supporting effect of the inner liner assembly 3 can effectively disperse the pressure applied by the pressure-applying assembly 2, preventing wear or damage to the external threads of the bolt 10's threaded portion due to direct contact. Furthermore, the material properties of the inner liner assembly 3 can also provide a certain degree of corrosion protection, extending the service life of the bolt 10. This design not only improves the overall performance of the aforementioned nut-assisted fastening device but also ensures its reliability and durability under various working conditions.
[0047] In some embodiments, such as Figure 5 , Figure 6 As shown, the aforementioned inner lining assembly 3 includes a first inner lining member 31 and a second inner lining member 32, spaced apart along a first direction X1 and extending along a second direction X2. The first inner lining member 31 has a third arcuate surface 311 on the side facing the second inner lining member 32, and the second inner lining member 32 has a fourth arcuate surface 321 on the side facing the first inner lining member 31. A second receiving space 33 is formed between the third arcuate surface 311 and the fourth arcuate surface 321, and the aforementioned bolt 10 passes through the second receiving space 33 along the second direction X2. That is, with... Figure 5 or Figure 6 Taking the perspective shown as an example, the lower surface of the first inner liner 31 is provided on the third arc-shaped surface 311, and the upper surface of the second inner liner 32 is provided on the fourth arc-shaped surface 321.
[0048] With the above configuration, the inner liner assembly 3 can be made into a split structure, which allows the inner liner assembly 3 to adapt to bolts 10 of different diameters, thereby improving the applicability of the above-mentioned nut-assisted fastening device.
[0049] In addition, the arc-shaped structure of the third arc-shaped surface 311 and the fourth arc-shaped surface 321 can be adapted to the arc-shaped outer surface of the bolt 10. This allows the clamping force applied to the outer surface of the bolt 10 to be evenly distributed on the outer surface of the bolt 10, avoiding excessive stress concentration at a certain point on the outer surface of the bolt 10, and further reducing the risk of damage to the external threads of the bolt 10 shank.
[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A nut-assisted fastening device for fixing the bolt (10) during the process of fastening the nut to the bolt (10), characterized in that, include: The fastening assembly (1) includes a first fastener (11) and a second fastener (12) spaced apart along a first direction (X1) and extending along a second direction (X2); the first fastener (11) has a first arcuate surface (111) on the side facing the second fastener (12), and the second fastener (12) has a second arcuate surface (121) on the side facing the first fastener (11); a first receiving space (13) is formed between the first arcuate surface (111) and the second arcuate surface (121), and the bolt (10) passes through the first receiving space (13) along the second direction (X2); the first direction (X1) is a vertical direction, and the first direction (X1) and the second direction (X2) are arranged at an angle; A pressure-applying component (2) is fitted onto the fastening component (1); the centerline of the pressure-applying component (2) is parallel to the axis of the bolt (10); the pressure-applying component (2) enables the first fastener (11) and the second fastener (12) to move toward the axis of the bolt (10) to press the bolt (10).
2. The nut-assisted fastening device according to claim 1, characterized in that, The pressure application assembly (2) includes a pressure ring (21) and an adjusting member (22); The pressure ring (21) is simultaneously fitted onto the first fastener (11) and the second fastener (12); the pressure ring (21) includes an open end (211) and a closed end (212); the adjusting member (22) passes through the open end (211); the adjusting member (22) can reduce the inner diameter of the pressure ring (21), thereby enabling the pressure ring (21) to press the first fastener (11) and the second fastener (12) together, so that the first fastener (11) and the second fastener (12) move toward the axis of the bolt (10).
3. The nut-assisted fastening device according to claim 2, characterized in that, The opening end (211) of the pressure ring (21) is symmetrically provided with a first connecting part (213) and a second connecting part (214), both of which extend radially along the pressure ring (21); the adjusting member (22) passes through both the first connecting part (213) and the second connecting part (214).
4. The nut-assisted fastening device according to claim 2, characterized in that, The first fastener (11) includes a plurality of first fastening sub-parts (112) arranged along the second direction (X2); the plurality of first fastening sub-parts (112) are arranged with increasing or decreasing size in the first direction (X1); the pressure ring (21) is sleeved on the first fastening sub-parts (112).
5. The nut-assisted fastening device according to claim 4, characterized in that, The second fastener (12) includes a plurality of second fastening sub-parts (122) arranged along the second direction (X2); the plurality of second fastening sub-parts (122) are arranged in increasing or decreasing order of size in the first direction (X1); Multiple second fastening sub-parts (122) and multiple first fastening sub-parts (112) are symmetrically arranged with the axis of the bolt (10) as the axis of symmetry; the pressure ring (21) is sleeved on the first fastening sub-parts (112) and the second fastening sub-parts (122).
6. The nut-assisted fastening device according to claim 1, characterized in that, The number of pressure-applying components (2) is multiple, and the multiple pressure-applying components (2) are arranged at intervals along the second direction (X2).
7. The nut-assisted fastening device according to claim 1, characterized in that, The cross-section of the fastening component (1) is semi-elliptical; the direction of the cross-section is perpendicular to the second direction (X2) and parallel to the first direction (X1).
8. The nut-assisted fastening device according to claim 1, characterized in that, The cross-section of the fastening component (1) is polygonal; the direction of the cross-section is perpendicular to the second direction (X2) and parallel to the first direction (X1).
9. The nut-assisted fastening device according to any one of claims 1 to 7, characterized in that, Also includes: The inner lining assembly (3) is fitted onto the bolt (10); the inner lining assembly (3) passes through the first receiving space (13) along the second direction (X2).
10. The nut-assisted fastening device according to claim 9, characterized in that, The inner lining assembly (3) includes a first inner lining member (31) and a second inner lining member (32) spaced apart along the first direction (X1) and extending along the second direction (X2); the first inner lining member (31) has a third arc-shaped surface (311) on the side facing the second inner lining member (32), and the second inner lining member (32) has a fourth arc-shaped surface (321) on the side facing the first inner lining member (31); a second receiving space (33) is formed between the third arc-shaped surface (311) and the fourth arc-shaped surface (321), and the bolt (10) passes through the second receiving space (33) along the second direction (X2).