Lock bolt
By using a multi-layer buffer device and a liquid damping cavity structure, the problem of spring washer fatigue in anti-loosening bolts under vibration is solved, achieving stable connection and extended service life in complex environments.
Patent Information
- Application Number
- CN202520158927.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-23
AI Technical Summary
When anti-loosening bolts are subjected to vibration or repeated loading, the spring washers become fatigued and lose elasticity, failing to effectively increase the friction between the threads, leading to bolt loosening and affecting the normal operation of the equipment.
It adopts a multi-layer buffer device and liquid damping cavity structure, including buffer pad, buffer block and liquid damping cavity, to consume vibration energy through elastic deformation and viscous resistance, enhance fatigue resistance and prevent bolt loosening.
It effectively buffers vibrations over a wide frequency range, prolongs stable equipment operation, and improves the anti-loosening performance and service life of bolts.
Smart Images
Figure CN223609095U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bolt technical field, concretely is a kind of lock bolt. BACKGROUND
[0002] Lock bolt is a kind of special bolt, mainly used to prevent bolt loosening under the working condition such as vibration, impact or dynamic load, ensure the fastening and safety of connection, prevent loosening by using spring washer, lock bolt can effectively resist loosening tendency caused by vibration;
[0003] When bolt is tightened, spring washer is pressed flat, it will generate an elastic reaction force, the force makes the friction between threads increase, and the opening design of spring washer, when nut has loosening tendency, the edge of washer will be embedded into the surface of nut and connected component, play the role of preventing loosening;
[0004] Lock bolt usually uses a spring washer to prevent loosening, if lock bolt is installed in engine and other equipment, long-term in vibration or repeated loading environment, due to continuous vibration, spring washer will fatigue because of frequent compression and recovery, the elasticity of spring washer will gradually weaken, once its elastic restoring force is insufficient, cannot effectively increase the friction between threads, thereby leading to bolt loosening, affect the normal operation of equipment;
[0005] Therefore, a lock bolt is provided to solve the above problems. UTILITY MODEL CONTENTS
[0006] The utility model aims at providing a lock bolt to solve the problem that due to continuous vibration, spring washer will fatigue because of frequent compression and recovery, the elasticity of spring washer will gradually weaken, once its elastic restoring force is insufficient, cannot effectively increase the friction between threads, thereby leading to bolt loosening, affect the normal operation of equipment.
[0007] To achieve the above object, the utility model provides the following technical scheme:
[0008] A lock bolt, comprising a head, a light rod and a threaded rod, the bottom of the head is fixedly connected with the light rod, the lower end of the light rod is fixedly connected with the threaded rod, and the outer side of the light rod is provided with a lock element;The lock element comprises an elastic sleeve, a limiting groove is formed in the inner side of the elastic sleeve, an elastic gasket is installed in the inner side of the limiting groove, and a buffer device is installed in the inner side of the limiting groove, the buffer device comprises a buffer pad, a buffer hole is formed in the inner side of the buffer pad, buffer blocks are fixedly connected on the upper and lower sides of the buffer pad, and a liquid damping cavity is formed in the inner side of the buffer block.
[0009] As the further optimization of the utility model, wherein: the center point of the elastic sleeve and the limiting groove is the same vertical line, the shape of the elastic sleeve and the limiting groove is all set to annular, the vertical section of the limiting groove is U-shaped, the elastic sleeve and the limiting groove are parallel to each other, and the elastic sleeve is arranged on the outside of the polished rod.
[0010] As the further optimization of the utility model, wherein: the elastic gasket is arranged in the shape of a ring, a plurality of elastic gaskets are arranged, the vertical section of the elastic gasket is in the shape of a trapezoid, the elastic gaskets are evenly and equidistantly arranged on both sides of the buffer device, and the center point of each elastic gasket and the elastic sleeve is the same vertical line.
[0011] As the further optimization of the utility model, wherein: the buffer device is arranged in a plurality of, the center point of the buffer device and the elastic gasket is the same vertical line, the buffer device and the elastic gasket are staggered, the buffer device and the elastic gasket are all arranged on the inside of the limiting groove, and the buffer device and the elastic gasket are parallel to each other.
[0012] As the further optimization of the utility model, wherein: the buffer pad is arranged between the elastic gaskets, the buffer hole is arranged at the center position of the buffer pad, the buffer hole is arranged in the shape of a regular hexagon, and the inside of the buffer hole is tightly attached to the outside of the polished rod.
[0013] As the further optimization of the utility model, wherein: the buffer block is arranged in a plurality of, the buffer blocks are evenly and equidistantly distributed at the midpoint positions of the six edges of the upper end of the buffer hole, the buffer blocks are arrayed with the median line of the buffer pad as the axis, and the shape of the buffer block is set to a cuboid.
[0014] As the further optimization of the utility model, wherein: the liquid damping cavity is arranged in a plurality of, the shape of the liquid damping cavity is set to a cylinder, the inside of the liquid damping cavity is filled with silicon oil, the liquid damping cavities are evenly and equidistantly distributed on the inside of the buffer block, and the liquid damping cavities are parallel to each other.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] In the utility model, the buffer device is arranged, a multilayer buffer pad and an elastic gasket are alternately stacked in the structure, fatigue resistance can be enhanced, the service life of the buffer device can be prolonged, the buffer hole in the shape of a hexagon can absorb energy through deformation when being pressed, stress energy can be evenly distributed along the honeycomb wall, stress concentration can be avoided, the silicon oil in the liquid damping cavity can flow under the action of pressure difference, viscous resistance can consume vibration energy, vibration can be buffered together with the elastic deformation of the buffer pad, stable buffering performance can be maintained in a wide frequency range, and stable operation of equipment can be ensured. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the whole structure schematic view of the utility model;
[0018] Figure 2 It is the anti-loosening element dismounting structure schematic view of the utility model;
[0019] Figure 3 It is the elastic sleeve profile structure schematic view of the utility model;
[0020] Figure 4 It is the buffer device dismounting structure schematic view of the utility model;
[0021] Figure 5 It is the buffer block profile structure schematic view of the utility model.
[0022] In the drawing: 1, head;
[0023] 2, polished rod;
[0024] 3, threaded rod;
[0025] 4, anti-loosening element; 41, elastic sleeve; 42, limiting groove; 43, elastic gasket; 44, buffer device; 441, buffer pad; 442, buffer hole; 443, buffer block; 444, liquid damping cavity. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0027] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.
[0028] Please refer to Figures 1-5 The utility model provides a technical scheme:
[0029] The utility model provides an anti-loose bolt, including head 1, light pole 2 and threaded rod 3, the bottom fixed connection of head 1 has light pole 2, the lower end fixed connection of light pole 2 has threaded rod 3, and the outside installation of light pole 2 has anti-loose element 4;Anti-loose element 4 includes elastic sleeve 41, and the inside of elastic sleeve 41 is provided with limiting groove 42, and the inside of limiting groove 42 is installed with elastic gasket 43, and the inside of limiting groove 42 is installed with buffer device 44, and buffer device 44 includes buffer pad 441, and the inside center position of buffer pad 441 is provided with buffer hole 442, and the upper and lower sides of buffer pad 441 are fixedly connected with buffer block 443, and the inside of buffer block 443 is provided with liquid damping cavity 444.
[0030] As the further implementation of the above technical scheme: the shape of the elastic gasket 43 is annular, the elastic gasket 43 is provided with a plurality of elastic gaskets 43, the vertical section of the elastic gasket 43 is trapezoidal, the elastic gasket 43 is evenly and equidistantly arranged on both sides of the buffer device 44, each elastic gasket 43 is on the same vertical line with the center point of the elastic sleeve 41, and after being subjected to the pressure generated by vibration or impact, the elastic gasket 43 can be elastically deformed to absorb vibration energy, effectively reduce the degree of vibration transmission to the bolt, and prevent the bolt from loosening due to vibration.
[0031] As the further implementation of the above technical scheme: the liquid damping cavity 444 is provided with a plurality of liquid damping cavities 444, the shape of the liquid damping cavity 444 is cylindrical, the inside of the liquid damping cavity 444 is filled with silicone oil, the liquid damping cavity 444 is evenly and equidistantly distributed inside the buffer block 443, the liquid damping cavities 444 are parallel to each other, the silicone oil filled inside flows under the action of the pressure difference generated by the deformation of the buffer block 443, the viscous resistance of the silicone oil consumes vibration energy, and the combination of the elastic deformation of the buffer pad 441 and the buffer block 443 effectively buffers vibration in a wider frequency range, and the anti-loose performance of the anti-loose element 4 in a complex vibration environment is improved.
[0032] As the further implementation of the above technical scheme: the buffer device 44 is provided with a plurality of buffer devices 44, the center point of the buffer device 44 and the elastic gasket 43 is on the same vertical line, the buffer device 44 and the elastic gasket 43 are staggered, the buffer device 44 and the elastic gasket 43 are arranged inside the limiting groove 42, and the buffer device 44 and the elastic gasket 443 are parallel to each other, which can effectively disperse pressure and enhance the buffering effect.
[0033] As a further implementation of the above technical solutions: the buffer pad 441 is arranged between the elastic washers 43, the buffer hole 442 is arranged at the center of the buffer pad 441, the buffer hole 442 is arranged in a regular hexagon shape, the inner side of the buffer hole 442 is in close contact with the outer side of the polished rod 2, and the buffer pad 441 can uniformly transmit the pressure to the surrounding elastic washers 43 and buffer blocks 443 and other components when subjected to stress, thereby avoiding excessive local pressure and improving the carrying capacity and stability of the entire anti-loose element 4.
[0034] As a further implementation of the above technical solutions: the buffer blocks 443 are evenly and equidistantly distributed at the midpoint positions of the six edges of the upper end of the buffer hole 442, the buffer blocks 443 are arrayed around the median line of the buffer pad 441, the buffer blocks 443 are cuboids, and the absorption and dissipation capacity of the vibration energy is further improved.
[0035] As a further implementation of the above technical solutions: the center of the elastic sleeve 41 and the limiting groove 42 is a vertical line, the shapes of the elastic sleeve 41 and the limiting groove 42 are both arranged in a ring shape, the vertical section of the limiting groove 42 is U-shaped, the elastic sleeve 41 and the limiting groove 42 are parallel to each other, the elastic sleeve 41 is arranged on the outer side of the polished rod 2, the inner side of the elastic sleeve 41 is in contact with the polished rod 2, when subjected to extrusion, the elastic sleeve 41 generates a holding force on the polished rod 2, increases the friction between the polished rod 2 and the anti-loose element 4, and to some extent, protects the surface of the polished rod 2 from the erosion of the external environment, reduces the corrosion and wear of the polished rod 2, and prolongs the service life of the bolt.
[0036] Workflow: First, the elastic sleeve 41 is sleeved on the polished rod 2, the annular structure and the polished rod 2 are matched, the threaded rod 3 of the locking bolt is passed through the mounting hole of the connected part, the torque is applied to the bolt, the bolt is gradually tightened, with the tightening of the bolt, the locking element 4 is extruded between the polished rod 2 and the connected part, the elastic sleeve 41 generates a certain holding force outside the polished rod 2, and the elastic washer 43 is compressed, and the buffer device 44 also begins to be stressed, when subjected to vibration or impact, the vibration energy is first transmitted to the locking element 4, the elastic washer 43 absorbs part of the vibration energy by elastic deformation, due to the shape of the trapezoidal vertical section, a component in the direction of the polished rod 2 is generated when subjected to pressure, thereby increasing the holding force of the polished rod 2, and a certain friction force is also generated to resist loosening caused by vibration, the buffer pad 441 in the buffer device 44 will be elastically deformed with vibration, the hexagonal design of the buffer hole 442 makes it better adapt to the shape and stress condition of the polished rod 2 during deformation, the buffer block 443 also moves with the deformation of the buffer pad 441, the silicone oil in the liquid damping cavity 444 inside the buffer block 443 generates viscous resistance through flow in the cavity when the liquid damping cavity 444 is subjected to pressure change, the viscous resistance consumes vibration energy, which cooperates with the elastic deformation of the buffer pad 441 to reduce the vibration energy transmitted to the bolt, thereby reducing the dynamic load on the bolt, at the same time, it also avoids damage to the elastic washer 43 due to instantaneous excessive impact, maintains the holding and locking effect of the elastic washer 43 on the polished rod 2, and the shape of the limiting groove 42 enables the elastic washer 43 and the buffer device 44 to be stably installed therein, ensuring that they will not be displaced or fall off during operation.
[0037] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A check bolt comprising a head (1), a polished rod (2) and a threaded rod (3), characterized in that: The head (1) bottom fixedly connected with a polished rod (2), the lower end of the polished rod (2) is fixedly connected with a threaded rod (3), the polished rod (2) outside is installed with an anti-loosening element (4); The anti-loosening element (4) includes an elastic sleeve (41), the inside of the elastic sleeve (41) is provided with a limiting groove (42), the inside of the limiting groove (42) is installed with an elastic gasket (43), the inside of the limiting groove (42) is installed with a buffer device (44), the buffer device (44) includes a buffer pad (441), the inside of the buffer pad (441) is provided with a buffer hole (442) at the center position, the buffer pad (441) is fixedly connected with a buffer block (443) on the upper and lower sides, and the inside of the buffer block (443) is provided with a liquid damping cavity (444).
2. A check bolt according to claim 1 wherein: The center points of the elastic sleeve (41) and the limiting groove (42) are the same vertical line, the shapes of the elastic sleeve (41) and the limiting groove (42) are both set as annular, the vertical section of the limiting groove (42) is U-shaped, the elastic sleeve (41) and the limiting groove (42) are parallel to each other, and the elastic sleeve (41) is arranged on the outside of the polished rod (2).
3. A check bolt according to claim 1 wherein: The elastic gasket (43) is arranged in the shape of a ring, a plurality of elastic gaskets (43) are arranged, the vertical section of the elastic gasket (43) is in the shape of a trapezoid, the elastic gaskets (43) are evenly and equidistantly arranged on both sides of the buffer device (44), and the center points of each elastic gasket (43) and the elastic sleeve (41) are the same vertical line.
4. A check bolt according to claim 1 wherein: A plurality of buffer devices (44) are arranged, the center points of the buffer devices (44) and the elastic gaskets (43) are the same vertical line, the buffer devices (44) and the elastic gaskets (43) are arranged alternately, the buffer devices (44) and the elastic gaskets (43) are both arranged on the inside of the limiting groove (42), and the buffer devices (44) and the elastic gaskets (43) are parallel to each other.
5. A check bolt according to claim 1 wherein: The buffer pad (441) is arranged between the elastic gaskets (43), the buffer hole (442) is arranged at the center position of the buffer pad (441), the buffer hole (442) is arranged in the shape of a regular hexagon, and the inside of the buffer hole (442) is tightly attached to the outside of the polished rod (2).
6. A check bolt according to claim 1 wherein: A plurality of buffer blocks (443) are arranged, the buffer blocks (443) are evenly and equidistantly distributed at the midpoint positions of the six edges of the upper end of the buffer hole (442), the buffer blocks (443) are arrayed around the median line of the buffer pad (441), and the buffer blocks (443) are arranged in the shape of a cuboid.
7. A check bolt according to claim 1 wherein: A plurality of liquid damping cavities (444) are arranged, the liquid damping cavities (444) are arranged in the shape of a cylinder, the inside of the liquid damping cavities (444) is filled with silicon oil, the liquid damping cavities (444) are evenly and equidistantly distributed on the inside of the buffer blocks (443), and the liquid damping cavities (444) are parallel to each other.