Large-scale equipment locking bolt with adjustable anti-loose gear ring
By introducing meshing tooth grooves and spring devices into the toothed ring structure of the locking bolt, the problem of connection loosening caused by bolt loosening is solved, and a connection that maintains high tightness and stability under vibration environment is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG YICHEN HARDWARE CORP
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-21
AI Technical Summary
If the existing double-toothed ring locking bolts loosen during use, gaps may form between the teeth, reducing their shock absorption capacity and making it impossible to effectively maintain a tight connection.
An adjustable anti-loosening gear ring structure was designed. By setting meshing tooth grooves, a first insert rod, and a first spring between the upper and lower gear rings, the spring force is used to maintain friction, ensuring the tightness of the connection between the bolt and the workpiece. The stability is improved by using an auxiliary insert rod and a limiting plate.
Even when the workpiece vibrates, the bolt and the workpiece can maintain continuous friction, which improves the stability and tightness of the connection and reduces the possibility of loosening.
Smart Images

Figure CN224149967U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bolt technology, specifically a large equipment locking bolt with an adjustable anti-loosening toothed ring. Background Technology
[0002] Locking bolts are essential components used to connect and fasten mechanical parts. Double-toothed locking bolts differ structurally from ordinary bolts, primarily consisting of a bolt head, a threaded rod, and a double-toothed locking device. The double-toothed locking device is the key component, typically located below the bolt head or between the nut and the connected parts. The double teeth are generally made of high-strength elastic material and have two opposing toothed structures. The tooth design allows for a specific meshing action between the bolt and the surface of the connected parts or nut during tightening. However, in the use of existing double-toothed locking bolts, if the bolt loosens and a gap forms between the two sets of teeth, its shock-absorbing capability will significantly decrease. Therefore, we propose a large-scale equipment locking bolt with an adjustable anti-loosening toothed ring. Utility Model Content
[0003] In order to overcome the shortcomings of the prior art, this utility model provides a large equipment locking bolt with an adjustable anti-loosening gear ring, which effectively solves the above problems.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a large equipment locking bolt with an adjustable anti-loosening gear ring, comprising a bolt, an upper gear ring, and a lower gear ring. The bolt includes a fixing plate and a screw body. The lower side of the fixing plate is connected to the screw body. The upper and lower gear rings are provided with meshing tooth grooves on opposite sides. Multiple sets of first insert rods are evenly connected to the upper side of the upper gear ring. The lower side of the fixing plate is provided with insertion holes that match the first insert rods. A first spring is connected to the upper side of the first insert rod, and the upper side of the first spring is connected to the fixing plate.
[0005] Preferably, a first screw is connected to the upper side of the fixing plate, a rotating plate is connected to the lower side of the first screw, and multiple sets of push rods are connected to the lower side of the rotating plate. The interior of the fixing plate is provided with sliding grooves that match the push rods and the rotating plate.
[0006] Preferably, an auxiliary plug is connected to the upper side of the first plug, and the upper side of the fixing plate is provided with a plug hole that matches the auxiliary plug.
[0007] Preferably, a hexagonal hole is provided on the upper side of the first screw.
[0008] Preferably, a limiting plate is connected to the outer side of the first insertion rod, and a limiting groove matching the limiting plate is provided in the fixing plate.
[0009] Preferably, the upper side of the upper gear ring and the lower side of the lower gear ring are provided with anti-slip textures.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1. By setting the first insert rod and the first spring, even if the fixed workpiece vibrates, the lower tooth will still have a continuous frictional force between the upper tooth ring, the lower tooth ring and the fixed workpiece, thereby improving the tightness of the connection between the bolt and the fixed workpiece.
[0012] 2. By setting the first insertion rod and the first spring, even if the fixed workpiece vibrates, the lower tooth will continue to have friction between the upper tooth ring, the lower tooth ring and the fixed workpiece, thereby improving the tightness of the connection between the bolt and the fixed workpiece. Attached Figure Description
[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0014] In the attached diagram:
[0015] Figure 1 This is a schematic diagram of the structure of the adjustable anti-loosening gear ring for large equipment locking bolts according to this utility model;
[0016] Figure 2 This is a schematic diagram of the lower gear ring structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the push rod structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the first spring structure of this utility model.
[0019] In the diagram: 100, bolt; 110, fixing plate; 120, screw body; 130, first screw; 140, rotating plate; 150, push rod; 200, upper gear ring; 210, first insert rod; 220, first spring; 230, auxiliary insert rod; 240, limiting plate; 300, lower gear ring. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4A large equipment locking bolt with an adjustable anti-loosening gear ring includes a bolt 100, an upper gear ring 200, and a lower gear ring 300. The bolt 100 includes a fixing plate 110 and a screw body 120. The lower side of the fixing plate 110 is fixedly connected to the screw body 120. The upper gear ring 200 and the lower gear ring 300 have meshing tooth grooves on opposite sides. Multiple sets of first insert rods 210 are evenly fixedly connected to the upper side of the upper gear ring 200. The lower side of the fixing plate 110 has insertion holes matching the first insert rods 210. A first spring 220 is fixedly connected to the upper side of the first insert rod 210. The upper side of the first spring 220 is fixedly connected to the fixing plate 110. During use, the upper gear ring 200 and the lower gear ring 300 are fitted onto the outside of the screw body 120, and then the bolt 100 is rotated. When connected to other workpieces, the rotating fixed plate 110 drives the upper gear ring 200 to rotate. After the upper gear ring 200 meshes with the lower gear ring 300, it continues to rotate until it can no longer rotate. During subsequent use, the upper gear ring 200 and the lower gear ring 300 collide. Due to the meshing tooth grooves, the friction between the bolt 100, the upper gear ring 200 and the lower gear ring 300, and the fixed workpiece increases during the collision, thereby reducing the possibility of the bolt 100 loosening. When the bolt 100 has already loosened, the elastic force generated by the deformation of the first spring 220 drives the first insert rod 210 to move downward. The first insert rod 210 drives the upper gear ring 200 to move downward, so that the upper gear ring 200 and the lower gear ring 300 will still mesh after separating, and then the upper gear ring 200 and the lower gear ring 300 will... The 00 contact ensures that even if the fixed workpiece vibrates, the lower teeth maintain continuous friction between the upper gear ring 200, the lower gear ring 300, and the fixed workpiece, improving the tightness of the connection between the bolt 100 and the fixed workpiece. The first insert rod 210 and the first spring 220 ensure that even if the fixed workpiece vibrates, the lower teeth maintain continuous friction between the upper gear ring 200, the lower gear ring 300, and the fixed workpiece, improving the tightness of the connection between the bolt 100 and the fixed workpiece. A first screw 130 is screwed to the upper side of the fixing plate 110, and a rotating plate 140 is rotatably connected to the lower side of the first screw 130. Multiple sets of push rods 150 are fixedly connected to the lower side of the rotating plate 140. The interior of the fixing plate 110 has openings for contact with the push rods 150. 50. A matching groove exists on the rotating plate 140. Rotating the first screw 130 causes the rotating plate 140 to move up and down, which in turn causes the push rod 150 to move up and down. The push rod 150 compresses the first spring 220. By setting the first screw 130, rotating plate 140, and push rod 150, a more stable elastic force can be provided when the first spring 220 loosens during long-term use, improving the stability of the device. An auxiliary insert rod 230 is fixedly connected to the upper side of the first insert rod 210. The lower side of the push rod 150 has an insertion hole that matches the auxiliary insert rod 230. The first insert rod 210 is located inside the first spring 220. The auxiliary insert rod 230 can limit the movement of the first insert rod 210.To improve the stability of the first insertion rod 210 during lifting, a hexagonal hole is provided on the upper side of the first screw 130. This facilitates the use of the first screw 130 by the operator. A limiting plate 240 is fixedly connected to the outer side of the first insertion rod 210. A limiting groove matching the limiting plate 240 is provided in the fixing plate 110. The limiting plate 240 limits the movement of the first insertion rod 210 during use, improving the stability of the device. Anti-slip textures are provided on the upper side of the upper gear ring 200 and the lower side of the lower gear ring 300. These textures increase the friction between the upper gear ring 200 and the fixing plate 110, and between the lower gear ring 300 and the workpiece being fixed, reducing the possibility of the bolt 100 loosening.
Claims
1. An adjustable lock bolt for large equipment lock bolts with a lost motion ring, characterized by: The device includes a bolt (100), an upper gear ring (200), and a lower gear ring (300). The bolt (100) includes a fixing plate (110) and a screw body (120). The lower side of the fixing plate (110) is connected to the screw body (120). The upper gear ring (200) and the lower gear ring (300) are provided with meshing tooth grooves on opposite sides. Multiple sets of first insert rods (210) are evenly connected to the upper side of the upper gear ring (200). The lower side of the fixing plate (110) is provided with insertion holes that match the first insert rods (210). A first spring (220) is connected to the upper side of the first insert rod (210). The upper side of the first spring (220) is connected to the fixing plate (110).
2. The adjustable lock bolt for large equipment with a lock ring that prevents loosening according to claim 1, characterized in that: The upper side of the fixed plate (110) is connected to a first screw (130), the lower side of the first screw (130) is connected to a rotating plate (140), the lower side of the rotating plate (140) is connected to multiple sets of push rods (150), and the interior of the fixed plate (110) is provided with a sliding groove that matches the push rods (150) and the rotating plate (140).
3. The adjustable anti-loosening gear ring for large equipment locking bolts according to claim 2, characterized in that: An auxiliary plug (230) is connected to the upper side of the first plug (210), and a plug hole matching the auxiliary plug (230) is opened on the lower side of the push rod (150).
4. The adjustable lock bolt for large equipment of the self-locking gear ring according to claim 2, characterized in that: The upper side of the first screw (130) is provided with a hexagonal hole.
5. The adjustable lock bolt for large equipment of the self-locking gear ring according to claim 1, characterized in that: The outer side of the first insertion rod (210) is connected to a limiting plate (240), and the fixing plate (110) has a limiting groove that matches the limiting plate (240).
6. The adjustable lock bolt for large equipment of the self-locking gear ring according to claim 1, characterized in that: The upper side of the upper gear ring (200) and the lower side of the lower gear ring (300) are provided with anti-slip texture.