Self-locking U-shaped bolt
By designing locking and reinforcing components for the self-locking U-bolt, the problem of loosening of traditional U-bolts under vibration is solved, achieving stable connection and simplified installation, reducing costs and maintenance requirements.
Patent Information
- Application Number
- CN202520486308.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Traditional U-bolts are prone to loosening under vibration or dynamic load conditions, leading to connection failure. They also require auxiliary parts, increasing installation complexity and cost, and wear out quickly, requiring frequent replacement.
A self-locking U-bolt is designed, which enhances the fixing effect and simplifies the installation process by using a combination of locking and reinforcing components, including clamps, locking bolts, adjusting cylinders, movable rings, and reinforcing blocks.
It effectively prevents loosening, improves connection stability, reduces maintenance costs, simplifies installation steps, and extends service life.
Smart Images

Figure CN223739838U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to a self-locking U-bolt. Background Technology
[0002] U-bolts are a common type of fastener, typically used to secure pipes, cables, and mechanical components. They are shaped like the letter "U" and have threads at both ends, allowing them to be tightened with nuts. The size of a U-bolt is usually determined by parameters such as its diameter, bending radius, and thread length.
[0003] Traditional U-bolts are prone to loosening under vibration or dynamic load conditions, leading to connection failure. Over time, the preload of the bolts may gradually weaken, further exacerbating the loosening problem. To prevent loosening, traditional U-bolts usually require the use of auxiliary parts such as spring washers, lock nuts, and thread sealant, which increases the complexity and cost of installation. Using auxiliary parts not only increases the number of installation steps but may also result in unsatisfactory locking effects due to improper installation. Because traditional U-bolts are prone to loosening, they need to be inspected and retightened regularly, increasing maintenance costs and workload. Under vibration or high load conditions, traditional U-bolts wear and fail more quickly, potentially requiring frequent replacement.
[0004] Therefore, it is necessary to invent a self-locking U-bolt to solve the above problems. Utility Model Content
[0005] (a) Purpose of the utility model
[0006] To address the technical problems existing in the background art, this utility model proposes a self-locking U-bolt, which reduces the use of auxiliary parts and lowers costs.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a self-locking U-bolt, comprising a U-shaped stud, wherein a locking component is installed at the front end of the U-shaped stud, and a reinforcing component is provided on one side of the locking component;
[0009] The locking assembly includes two sets of clamping plates, which are clamped on the upper and lower sides of the front end of the U-shaped stud. The opposite sides of the clamping plates are provided with clamping grooves that match the two sides of the U-shaped stud. The clamping plates are also provided with locking holes on both sides. The two sets of clamping plates are symmetrically arranged and the locking holes are corresponding. Locking bolts are installed inside the clamping plates, and locking bolts are matched with locking nuts.
[0010] The reinforcement component includes an adjusting cylinder, which is installed on the outer wall of one side of the U-shaped stud. A movable ring is also installed on the outer wall of the adjusting cylinder, and an adjusting reinforcement plate is installed on the outer wall of the movable ring. The other end of the adjusting reinforcement plate is provided with a mating groove, which matches the other side of the U-shaped stud. Reinforcing grooves are provided on both sides of the mating groove, and reinforcing blocks are correspondingly matched to the reinforcing grooves. The reinforcing blocks fix the adjusting reinforcement plate to the other side of the U-shaped stud.
[0011] Preferably, the inner sides of the two sets of clamping plates are provided with matching grooves that match the arc-shaped portion of the U-shaped stud. The matching grooves are opposite to the arc-shaped portion of the U-shaped stud. The locking holes, locking bolts, and locking nuts are all provided with matching threads. The locking nuts are located at the bottom of the lower clamping plate.
[0012] Preferably, the adjusting cylinder has a thread inside that matches the front end of the U-shaped stud, the overall length of the adjusting cylinder is greater than the length of the movable ring, the length of the adjusting reinforcing plate matches the length of the movable ring, the inner side of the adjusting reinforcing plate has a groove that matches the shape of the outer side of the clamping plate, a buffer pad is installed in the groove, and the curvature of the buffer pad matches the groove.
[0013] Preferably, the docking groove is located at the other end of the adjusting and reinforcing plate, and its inner side is arc-shaped, matching the column on the other side of the U-shaped stud. The reinforcing groove is located on both sides of the docking groove, and its overall shape is arc-shaped. The top grooves at both ends of the docking groove are T-shaped, and the tops at both ends of the reinforcing block are correspondingly T-shaped. The cross-section of the reinforcing block is semi-circular.
[0014] Preferably, the front edge of the reinforcing block is further provided with a limiting plate, the size of which is larger than the size of the reinforcing groove.
[0015] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:
[0016] 1. This utility model uses two sets of clamping plates to clamp the upper and lower sides of the front end of the U-shaped stud. The clamping grooves on the clamping plates match the two sides of the U-shaped stud, ensuring a tight fit between the clamping plates and the U-shaped stud. The use of locking holes and locking bolts further enhances the fixing effect between the clamping plates and the U-shaped stud, preventing loosening.
[0017] 2. In this utility model, an adjusting cylinder is installed on the outer wall of one side of the U-shaped stud, and an adjusting and reinforcing plate is installed on the outer wall of the movable ring. The adjusting and reinforcing plate matches the other side of the U-shaped stud through a mating groove. The cooperation of the reinforcing groove and the reinforcing block further enhances the fixing effect of the U-shaped stud.
[0018] 3. The locking hole, locking bolt, and locking nut of this utility model are all provided with matching threads, and the inside of the adjusting cylinder is provided with a matching thread for the front end of the U-shaped stud, which makes the installation and disassembly process simpler and improves work efficiency. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0020] Figure 1 This is a schematic diagram of the overall installation structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the installation structure of the reinforcement component of this utility model;
[0023] Figure 4 This is a schematic diagram of the disassembled structure of the reinforcement component of this utility model;
[0024] Figure 5 For the present utility model Figure 4 Schematic diagram of part A in the middle.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. U-shaped stud; 2. Locking assembly; 21. Clamping plate; 22. Clamping groove; 23. Locking hole; 24. Locking bolt; 25. Locking nut; 26. Adaptor groove; 3. Reinforcing assembly; 31. Adjusting cylinder; 32. Moving ring; 33. Adjusting reinforcing plate; 34. Connecting groove; 35. Reinforcing groove; 36. Reinforcing block; 37. Groove; 38. Buffer pad; 39. Limiting plate. Detailed Implementation
[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0028] This utility model provides, for example Figure 1-5 The self-locking U-bolt shown includes a U-shaped stud 1, a locking component 2 installed at the front end of the U-shaped stud 1, and a reinforcing component 3 provided on one side of the locking component 2;
[0029] Specifically, the locking assembly 2 includes two sets of clamping plates 21, which are clamped on the upper and lower sides of the front end of the U-shaped stud 1. The opposite sides of the clamping plates 21 are provided with clamping grooves 22 that match the two sides of the U-shaped stud 1. The clamping plates 21 are also provided with locking holes 23 on both sides. The two sets of clamping plates 21 are symmetrically arranged and the locking holes 23 correspond to each other. Locking bolts 24 are installed inside them, and locking bolts 24 are matched with locking nuts 25.
[0030] Reference Figure 3-5 The reinforcing component 3 includes an adjusting cylinder 31, which is installed on the outer wall of one side of the U-shaped stud 1. A movable ring 32 is also installed on the outer wall of the adjusting cylinder 31. An adjusting reinforcing plate 33 is installed on the outer wall of the movable ring 32. The other end of the adjusting reinforcing plate 33 is provided with a docking groove 34, which matches the other side of the U-shaped stud 1. Reinforcing grooves 35 are provided on both sides of the docking groove 34. Reinforcing blocks 36 are correspondingly matched to the reinforcing grooves 35. The reinforcing blocks 36 fix the adjusting reinforcing plate 33 to the other side of the U-shaped stud 1.
[0031] In this embodiment, the locking assembly 2 is installed by clamping two sets of clamping plates 21 on the upper and lower sides of the front end of the U-shaped stud 1, ensuring that the clamping grooves 22 on the clamping plates 21 are tightly fitted with the two sides of the U-shaped stud 1. The locking bolts 24 are passed through the locking holes 23 on both sides of the clamping plates 21, and the locking nuts 25 are installed at the bottom of the lower clamping plate 21. By tightening the locking nuts 25, the clamping plates 21 and the U-shaped stud 1 are tightly fixed to prevent loosening.
[0032] In this embodiment, the installation of the reinforcing component 3 involves installing the adjusting cylinder 31 on the outer wall of one side of the U-shaped stud 1, ensuring that the internal thread of the adjusting cylinder 31 matches the thread at the front end of the U-shaped stud 1. A movable ring 32 is installed on the outer wall of the adjusting cylinder 31, and an adjusting reinforcing plate 33 is installed on the outer wall of the movable ring 32. The mating groove 34 at the other end of the adjusting reinforcing plate 33 is matched with the other side of the U-shaped stud 1, ensuring that the arc shape inside the mating groove 34 fits tightly against the U-shaped stud 1. A reinforcing block 36 is inserted into the reinforcing grooves 35 on both sides of the mating groove 34, ensuring that the T-shaped top of the reinforcing block 36 matches the T-shaped groove of the mating groove 34. The adjusting reinforcing plate 33 is then fixed to the other side of the U-shaped stud 1 using the reinforcing block 36.
[0033] Reference Figure 1-2 The inner sides of the two sets of clamping plates 21 are provided with matching grooves 26 that match the arc-shaped part of the U-shaped stud 1. The matching grooves 26 are opposite to the arc-shaped part of the U-shaped stud 1. The locking holes 23, locking bolts 24 and locking nuts 25 are all provided with matching threads. The locking nuts 25 are located at the bottom of the lower clamping plate 21.
[0034] Reference Figure 3-5The adjusting cylinder 31 has a thread inside that matches the front end of the U-shaped stud 1. The overall length of the adjusting cylinder 31 is greater than the length of the movable ring 32. The length of the adjusting reinforcing plate 33 matches that of the movable ring 32. The inner side of the adjusting reinforcing plate 33 has a groove 37 that matches the shape of the outer side of the clamping plate 21. A buffer pad 38 is installed in the groove 37. The curvature of the buffer pad 38 matches that of the groove 37.
[0035] In this embodiment, a buffer pad 38 is installed in the groove 37 inside the adjusting and reinforcing plate 33 to ensure that the curvature of the buffer pad 38 matches that of the groove 37, thus providing buffering and shock absorption functions.
[0036] Specifically, the docking groove 34 is located at the other end of the adjusting and reinforcing plate 33, and its inner side is arc-shaped, matching the column on the other side of the U-shaped stud 1. The reinforcing groove 35 is located on both sides of the docking groove 34, and its overall shape is arc-shaped. The top grooves at both ends of the docking groove 34 are T-shaped, and the tops at both ends of the reinforcing block 36 are correspondingly T-shaped. The cross-section of the reinforcing block 36 is semi-circular.
[0037] Specifically, the front edge of the reinforcing block 36 is also provided with a limiting plate 39, the size of which is larger than that of the reinforcing groove 35.
[0038] In this embodiment, a limiting plate 39 is provided on the front edge of the reinforcing block 36 to ensure that the size of the limiting plate 39 is larger than the size of the reinforcing groove 35, thereby preventing the reinforcing block 36 from sliding in the reinforcing groove 35 and improving the reinforcement effect.
[0039] In this embodiment, the clamping plate 21 and the locking bolt 24 are used together to ensure that the clamping plate 21 and the U-shaped stud 1 are tightly fitted together, preventing loosening and improving the stability of the overall structure.
[0040] Specifically, the U-shaped stud 1 is further enhanced by the combined use of the adjusting cylinder 31, the movable ring 32 and the adjusting reinforcing plate 33, ensuring its stability in various application scenarios.
[0041] Specifically, the buffer pad 38 provides cushioning and shock absorption, reducing the impact of vibration on the bolt structure and improving the service life of the bolt.
[0042] Specifically, the locking hole 23, the locking bolt 24, and the locking nut 25 are all provided with matching threads, and the adjusting cylinder 31 is provided with a thread that matches the front end of the U-shaped stud 1, which makes the installation and disassembly process easier and improves work efficiency.
[0043] Specifically, the design of components such as clamping plate 21, locking bolt 24, adjusting cylinder 31, movable ring 32 and adjusting reinforcement plate 33 is compact, the overall structure is beautiful, and the space occupied is reduced.
[0044] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A self-locking type U-bolt, characterized by: The utility model provides a locking assembly and reinforcing assembly of U -shaped stud, including U -shaped stud (1), the front end of U -shaped stud (1) is equipped with locking assembly (2), one side of locking assembly (2) is equipped with reinforcing assembly (3) still, The locking assembly (2) includes two sets of clamping plates (21), which are clamped on the upper and lower sides of the front end of the U-shaped stud (1). The opposite sides of the clamping plate (21) are provided with clamping grooves (22) matching the two side columns of the U-shaped stud (1). The clamping plate (21) is also provided with a locking hole (23) on both sides. The two sets of clamping plates (21) are symmetrically arranged, and the locking holes (23) correspond to each other. A locking bolt (24) is installed inside. The locking bolt (24) is matched with a locking nut (25). The reinforcing assembly (3) includes an adjusting cylinder (31) installed on the outer wall of one side column of the U-shaped stud (1). An adjustable ring (32) is also installed on the outer wall of the adjusting cylinder (31). An adjustable reinforcing plate (33) is installed on the outer wall of the adjustable ring (32). The other end of the adjustable reinforcing plate (33) is provided with a butt joint groove (34) matching the other side column of the U-shaped stud (1). Reinforcing grooves (35) are provided on both sides of the butt joint groove (34). Reinforcing blocks (36) are provided corresponding to the reinforcing grooves (35), which fix the adjustable reinforcing plate (33) to the other side column of the U-shaped stud (1).
2. The self-locking U-bolt of claim 1, wherein: The inner sides of the two sets of clamping plates (21) are provided with adaptive grooves (26) matching the arc-shaped part of the U-shaped stud (1). The adaptive grooves (26) are opposite to the arc-shaped part of the U-shaped stud (1). The locking holes (23), the locking bolts (24), and the locking nuts (25) are all provided with matching threads. The locking nuts (25) are arranged at the bottom of the lower clamping plate (21).
3. The self-locking U-bolt of claim 1, wherein: The inside of the adjusting cylinder (31) is provided with threads matching the front end of the U-shaped stud (1). The overall length of the adjusting cylinder (31) is greater than the length of the adjustable ring (32). The length of the adjustable reinforcing plate (33) matches the length of the adjustable ring (32). The inner side of the adjustable reinforcing plate (33) is provided with a groove (37) matching the shape of the outer side of the clamping plate (21). A buffer pad (38) is installed in the groove (37). The buffer pad (38) matches the curvature of the groove (37).
4. The self-locking U-bolt of claim 1, wherein: The butt joint groove (34) is arranged at the other end of the adjustable reinforcing plate (33) and is arc-shaped on the inside, matching the other side column of the U-shaped stud (1). The reinforcing grooves (35) are arranged on both sides of the butt joint groove (34) and are arc-shaped as a whole. The top groove of the butt joint groove (34) at both ends is T-shaped. The top of the reinforcing blocks (36) at both ends corresponds to T-shaped. The cross section of the reinforcing blocks (36) is semicircular as a whole.
5. The self-locking U-bolt of claim 4, wherein: The front edge of the reinforcing block (36) is also provided with a limiting plate (39) with a size greater than that of the reinforcing groove (35).