Anti-loosening structure of shock absorber mounting seat

Abstract

The utility model discloses a shock absorber mounting seat anti -looseness structure relates to shock absorber accessory technical field, including mounting seat body and limit component, the four corners of mounting seat body are provided with bolt through -hole, and the bolt through -hole is connected with hexagon bolt in, limit component sets up in the back middle part of mounting seat body, and limit component includes fixed inner ring, ratchet wheel, rotation ring, arc -shaped sliding slot, sliding pin, baffle, limit plate, fixed outer ring, torsion spring and ratchet pawl, the outside sleeve of fixed inner ring has ratchet wheel. This shock absorber mounting seat anti -looseness structure, the ratchet pawl of fixed outer ring inside always engages with ratchet wheel under the action of torsion spring, forms one -way locking mechanism, and limits ratchet wheel reverse rotation, and cooperation arc -shaped sliding slot drives four limit plates along fixed outer ring guide groove synchronous radial movement through sliding pin, forms the circumferential limit to hexagon bolt, and double anti -looseness design can effectively prevent the loosening of hexagon bolt due to vibration, avoids the pre -tightening force attenuation.

Description

Technical Field

[0001] This utility model relates to the technical field of vibration damper accessories, specifically to a vibration damper mounting base anti-loosening structure. Background Technology

[0002] As the core component for equipment vibration damping and buffering, the mounting base of the vibration damper is a key structure connecting the vibration damper to the main body of the equipment. It must withstand the vibration loads and impact forces generated during equipment operation over a long period of time. It plays the role of a "bridge" in the vibration damping system, connecting the main structure such as the equipment frame and chassis at the upper end, and fixing the vibration damper cylinder or piston rod at the lower end. It must ensure the precise and stable installation posture of the vibration damper, smoothly transmit the damping force to the main body of the equipment, and buffer the impact of vibration and impact on the connection parts. It is an important supporting component to ensure the overall reliability of the vibration damping system.

[0003] Existing vibration damper mounting bases mostly use bolts for direct fastening. This structure has obvious shortcomings in long-term high-frequency vibration environments. The threaded mating surfaces of the bolts and mounting bases are prone to relative displacement due to vibration, which leads to a gradual decrease in preload and eventually loosening of the mounting base, affecting the vibration damping effect of the vibration damper.

[0004] Therefore, in view of this, we studied and improved the existing structure and its shortcomings, and proposed a vibration damper mounting base anti-loosening structure. Summary of the Invention

[0005] The purpose of this utility model is to provide a vibration damper mounting base anti-loosening structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibration damper mounting base anti-loosening structure, comprising a mounting base body and a limiting component. The mounting base body has bolt through holes at its four corners, with hexagonal bolts connected within these holes. The limiting component is located in the center of the back side of the mounting base body and includes a fixed inner ring, a ratchet, a rotating ring, an arc-shaped groove, a sliding pin, a baffle, a limiting plate, a fixed outer ring, a torsion spring, and a pawl. The fixed inner ring is fitted with a ratchet, and a rotating ring is fixed to the side of the ratchet away from the mounting base body. The surface of the ratchet has an arc-shaped groove, with a sliding pin passing through it. A baffle and a limiting plate are fixed to the two ends of the sliding pin, respectively. The back side of the mounting base body also has a fixed outer ring, and a pawl is hinged to the groove on the inner side of the fixed outer ring via a pin. A torsion spring is connected to the outer side of the pawl.

[0007] Furthermore, a mounting hole is provided in the middle of the mounting base body, and the mounting base body and the fixing inner ring are fixedly connected.

[0008] Furthermore, the mounting hole, the fixed inner ring, and the rotating ring are coaxially arranged, and the inner diameter of the ratchet matches the outer diameter of the fixed inner ring.

[0009] Furthermore, the rotating ring is sleeved outside the fixed inner ring, and the fixed inner ring and the rotating ring have the same length.

[0010] Furthermore, the arc-shaped grooves are distributed in an annular pattern at equal intervals along the surface of the ratchet, and there are four arc-shaped grooves, four sliding pins, four baffles, and four limiting plates.

[0011] Furthermore, the end of the limiting plate away from the sliding pin matches the shape of the hexagonal bolt, and the number of hexagonal bolts and the limiting plate are the same.

[0012] Furthermore, the end of the torsion spring away from the pawl is fixedly connected to the fixed outer ring, and the pawl is elastically connected to the fixed outer ring through the torsion spring. The limiting plate passes through the guide groove on the outside of the fixed outer ring.

[0013] Furthermore, an upper washer is placed on the front side of the bolt through hole, and a lower washer is placed on the back side of the bolt through hole.

[0014] This utility model provides an anti-loosening structure for a shock absorber mounting base, which has the following beneficial effects: 1. The pawl on the inner side of the fixed outer ring of this utility model is always engaged with the ratchet under the action of the torsion spring, forming a one-way locking mechanism to restrict the ratchet from rotating in the opposite direction. In conjunction with the arc-shaped slide groove, the four limiting plates are driven to move synchronously radially along the guide groove of the fixed outer ring through the sliding pin, forming a circumferential limit on the hexagonal bolt. The double anti-loosening design can effectively prevent the hexagonal bolt from loosening due to vibration and avoid the preload reduction.

[0015] 2. The upper washer on the front of the bolt through hole and the lower washer on the back of the present invention form a bidirectional pressure-bearing buffer, which can increase the contact area between the hexagonal bolt and the mounting body, disperse the pressure during tightening, and prevent the surface of the mounting body from deforming due to excessive local stress. At the same time, the upper washer can fill the gap between the contact surfaces, reduce the gap of the hexagonal bolt loosening caused by vibration, and the upper washer can also isolate the direct friction between the hexagonal bolt and the mounting body, reducing wear. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the anti-loosening structure of a vibration damper mounting base according to the present invention; Figure 2 This is a rear view schematic diagram of the anti-loosening structure of a vibration damper mounting base according to the present invention; Figure 3 This is a three-dimensional schematic diagram of the fixing inner ring and ratchet structure of the anti-loosening structure of the vibration damper mounting base according to this utility model.

[0017] In the diagram: 1. Mounting base body; 2. Mounting hole; 3. Bolt through hole; 4. Hex bolt; 5. Upper washer; 6. Lower washer; 7. Limiting assembly; 701. Fixed inner ring; 702. Ratchet; 703. Rotating ring; 704. Arc-shaped groove; 705. Sliding pin; 706. Baffle; 707. Limiting plate; 708. Fixed outer ring; 709. Torsion spring; 710. Pawl. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] like Figures 1 to 3 As shown, a vibration damper mounting base anti-loosening structure includes a mounting base body 1 and a limiting component 7. The mounting base body 1 has bolt through holes 3 at its four corners, and hexagonal bolts 4 are connected to the bolt through holes 3. The limiting component 7 is located in the middle of the back of the mounting base body 1, and includes a fixing inner ring 701, a ratchet 702, a rotating ring 703, an arc-shaped groove 704, a sliding pin 705, a baffle 706, a limiting plate 707, a fixing outer ring 708, a torsion spring 709, and a pawl 710. A ratchet 702 is fitted around the inner ring 701, and a rotating ring 703 is fixed to the side of the ratchet 702 away from the mounting body 1. An arc-shaped groove 704 is formed on the surface of the ratchet 702, and a sliding pin 705 passes through the arc-shaped groove 704. A baffle 706 and a limiting plate 707 are fixed to both ends of the sliding pin 705, respectively. A fixed outer ring 708 is also provided on the back of the mounting body 1, and a pawl 710 is hinged to the groove on the inner side of the fixed outer ring 708 by a pin. The outer side of the pawl 710... A torsion spring 709 is connected to the mounting base 1, and a mounting hole 2 is provided in the middle of the mounting base body 1. The mounting base body 1 and the fixed inner ring 701 are fixedly connected. The mounting hole 2, the fixed inner ring 701, and the rotating ring 703 are coaxially arranged. The inner diameter of the ratchet 702 matches the outer diameter of the fixed inner ring 701. The rotating ring 703 is sleeved on the outside of the fixed inner ring 701, and the fixed inner ring 701 and the rotating ring 703 have the same length. The arc-shaped grooves 704 are distributed equidistantly in a ring along the surface of the ratchet 702. There are four of each of the following: sliding groove 704, sliding pin 705, baffle 706 and limiting plate 707. The end of the limiting plate 707 away from the sliding pin 705 matches the shape of the hexagonal bolt 4. The number of hexagonal bolts 4 and limiting plates 707 are the same. The end of the torsion spring 709 away from the pawl 710 is fixedly connected to the fixed outer ring 708. The pawl 710 is elastically connected to the fixed outer ring 708 through the torsion spring 709. The limiting plate 707 passes through the guide groove on the outside of the fixed outer ring 708.

[0020] The specific operation is as follows: the pawl 710 on the inner side of the fixed outer ring 708 is always engaged with the ratchet 702 under the action of the torsion spring 709, forming a one-way locking mechanism to restrict the ratchet 702 from rotating in the opposite direction. In conjunction with the arc-shaped slide groove 704, the four limit plates 707 are driven to move synchronously radially along the guide groove of the fixed outer ring 708 through the sliding pin 705, forming a circumferential limit on the hexagonal bolt 4. The double anti-loosening design can effectively prevent the hexagonal bolt 4 from loosening due to vibration and avoid the preload reduction.

[0021] like Figure 1 and Figure 2 As shown, an upper washer 5 is placed on the front of the bolt through hole 3, and a lower washer 6 is placed on the back of the bolt through hole 3.

[0022] The specific operation is as follows: the upper washer 5 on the front of the bolt through hole 3 and the lower washer 6 on the back form a bidirectional pressure-bearing buffer, which can increase the contact area between the hexagonal bolt 4 and the mounting body 1, disperse the pressure during tightening, and prevent the surface of the mounting body 1 from deforming due to excessive local force. At the same time, the upper washer 5 can fill the gap of the contact surface, reduce the gap of the hexagonal bolt 4 caused by vibration, and the upper washer 5 can also isolate the direct friction between the hexagonal bolt 4 and the mounting body 1, reducing wear.

[0023] In summary, the anti-loosening structure of the vibration damper mounting base is designed for use by first placing the lower washer 6 in the bolt through hole 3 on the back of the mounting base body 1 and the upper washer 5 in the bolt through hole 3 on the front. Then, the hexagonal bolt 4 is passed through the upper washer 5, the bolt through hole 3 and the lower washer 6 and screwed into the threaded hole of the equipment body to tighten it. After the hexagonal bolts 4 are tightened to the preset preload, rotate the rotating ring 703 to drive the ratchet 702 to rotate synchronously around the axis of the fixed inner ring 701. When the ratchet 702 rotates, the arc-shaped slide groove 704 pushes the sliding pin 705 to move radially along the trajectory of the arc-shaped slide groove 704, so that the limiting plate 707 at the end of the sliding pin 705 moves closer to the hexagonal bolts 4 until the limiting plate 707 and the outer structure of the hexagonal bolts 4 are completely fitted, thereby achieving direct constraint on the circumferential rotation of each hexagonal bolt 4 and preventing the hexagonal bolts 4 from loosening due to self-rotation caused by vibration. During the process of the rotating ring 703 driving the ratchet 702 to rotate to the limit plate 707 locking the hex bolt 4, the pawl 710 is always in contact with the tooth surface of the ratchet 702 under the elastic force of the torsion spring 709. When the ratchet 702 rotates in the limiting locking direction, the pawl 710 can slide along the tooth surface of the ratchet 702. Once the ratchet 702 has a tendency to rotate in the opposite direction due to vibration, that is, the rotating ring 703 attempts to drive the limit plate 707 to disengage from the bolt, the pawl 710 will quickly get into the tooth groove of the ratchet 702 to form a one-way lock, preventing the ratchet 702 from reversing, thereby maintaining the continuous locking state of the limit plate 707 on the hex bolt 4. In addition, the upper washer 5 and the lower washer 6 enhance the contact friction between the hex bolt 4 and the mounting body 1. Together with the circumferential hard constraint of the limiting plate 707 and the one-way locking of the ratchet 702 and pawl 710, a triple anti-loosening protection is formed. When the equipment vibrates during operation, the hex bolt 4 cannot loosen by self-rotation, nor can it be released from the constraint by driving the limiting component 7 to reverse. This ensures the connection stability between the mounting body 1 and the main body of the equipment and avoids loosening failure caused by the decay of preload.

[0024] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A vibration damper mounting base anti-loosening structure, comprising a mounting base body (1) and a limiting component (7), characterized in that, The mounting base body (1) has bolt through holes (3) at its four corners, and hexagonal bolts (4) are connected inside the bolt through holes (3). The limiting component (7) is located in the middle of the back of the mounting base body (1), and the limiting component (7) includes a fixed inner ring (701), a ratchet (702), a rotating ring (703), an arc-shaped slide groove (704), a sliding pin (705), a baffle (706), a limiting plate (707), a fixed outer ring (708), a torsion spring (709), and a pawl (710). The ratchet (702) is sleeved on the outside of the fixed inner ring (701), and A rotating ring (703) is fixed on the side of the ratchet (702) away from the mounting body (1). An arc-shaped groove (704) is provided on the surface of the ratchet (702), and a sliding pin (705) is provided in the arc-shaped groove (704). A baffle (706) and a limiting plate (707) are fixed at both ends of the sliding pin (705). A fixed outer ring (708) is also provided on the back of the mounting body (1), and a pawl (710) is hinged in the groove on the inner side of the fixed outer ring (708) by a pin. A torsion spring (709) is connected to the outer side of the pawl (710).

2. The anti-loosening structure for a vibration damper mounting base according to claim 1, characterized in that, The mounting base body (1) has a mounting hole (2) in the middle, and the mounting base body (1) and the fixing inner ring (701) are fixedly connected.

3. The anti-loosening structure for a vibration damper mounting base according to claim 2, characterized in that, The mounting hole (2), the fixed inner ring (701) and the rotating ring (703) are coaxially arranged, and the inner diameter of the ratchet (702) matches the outer diameter of the fixed inner ring (701).

4. The anti-loosening structure for a vibration damper mounting base according to claim 1, characterized in that, The rotating ring (703) is sleeved outside the fixed inner ring (701), and the fixed inner ring (701) and the rotating ring (703) have the same length.

5. The anti-loosening structure for a vibration damper mounting base according to claim 1, characterized in that, The arc-shaped grooves (704) are distributed in an annular shape at equal intervals along the surface of the ratchet (702), and four arc-shaped grooves (704), four sliding pins (705), four baffles (706) and four limiting plates (707) are provided.

6. The anti-loosening structure for a vibration damper mounting base according to claim 1, characterized in that, The end of the limiting plate (707) away from the sliding pin (705) matches the shape of the hexagonal bolt (4), and the number of hexagonal bolts (4) and the limiting plate (707) are the same.

7. The anti-loosening structure for a vibration damper mounting base according to claim 1, characterized in that, The end of the torsion spring (709) away from the pawl (710) is fixedly connected to the fixed outer ring (708), and the pawl (710) is elastically connected to the fixed outer ring (708) through the torsion spring (709). The limiting plate (707) passes through the guide groove on the outside of the fixed outer ring (708).

8. The anti-loosening structure for a vibration damper mounting base according to claim 1, characterized in that, An upper washer (5) is placed on the front side of the bolt through hole (3), and a lower washer (6) is placed on the back side of the bolt through hole (3).

Images