Nitrogen shock absorber piston rod connection reinforcing structure

Abstract

The utility model discloses a nitrogen shock absorber piston rod connection reinforcing structure which comprises a lower connecting seat and a piston rod and further comprises a transition sleeve and a reinforcing ring. The transition sleeve is arranged outside the connecting end of the piston rod in a sleeving mode and arranged in the lower connecting base, the transition sleeve is provided with an inner threaded hole matched with the piston rod and an outer thread matched with the lower connecting base, the transition sleeve is connected with the piston rod in a fastened mode through the inner threaded hole, and the transition sleeve is connected with the lower connecting base in a fastened mode through the outer threaded hole. And the reinforcing ring is fixedly arranged at the front end in the transition sleeve. The nitrogen shock absorber piston rod connection reinforcing structure has the advantages of being reasonable in structure, reliable in connection, high in anti-fatigue performance and the like, can well meet the use requirements of a shock absorber under various working conditions, and has good stress prospects.

Description

Technical Field

[0001] This utility model relates to the field of vibration damper technology, specifically to a reinforced structure for connecting the piston rod of a nitrogen vibration damper. Background Technology

[0002] In existing technologies, the connection between the piston rod and external connecting parts often faces significant stress concentration problems, especially when subjected to alternating loads over long periods and strong vibrations and impacts under complex road or working conditions. This can easily lead to loosening, fatigue cracks, or even breakage, which not only affects the normal operating performance of the vibration damper and reduces its damping effect, but may also pose a safety hazard to the entire equipment or vehicle. While some conventional connection structures exist, they still have many shortcomings in enhancing connection strength, improving fatigue resistance, and dispersing stress, requiring further improvement and optimization. Utility Model Content

[0003] The purpose of this invention is to address the problems of stress concentration, insufficient connection strength, and easy loosening and damage in the piston rod connection part of the existing technology, and to provide a nitrogen gas vibration damper piston rod connection reinforcement structure that can improve the reliability and stability of the vibration damper operation.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a piston rod connection reinforcement structure for a nitrogen shock absorber, including a lower connecting seat and a piston rod, the innovation of which is: it also includes a transition sleeve and a reinforcing ring; the transition sleeve is sleeved outside the connecting end of the piston rod and disposed inside the lower connecting seat, the transition sleeve has an internal threaded hole adapted to the piston rod and an external thread adapted to the lower connecting seat, the transition sleeve is fastened to the piston rod through the internal threaded hole, and the transition sleeve is fastened to the lower connecting seat through the external threaded hole; the reinforcing ring is fixedly disposed inside the front end of the transition sleeve.

[0005] Furthermore, the outer wall of the transition sleeve is stepped, including a first cylindrical section near the piston rod end, a middle transition cone section, and a second cylindrical section away from the piston rod end. The minor diameter of the first cylindrical section is smaller than the outer diameter of the second cylindrical section. The transition cone section is used to achieve a smooth transition between the first cylindrical section and the second cylindrical section. A reinforcing ring is provided inside the first cylindrical section.

[0006] Furthermore, the reinforcing ring is disposed on the outer side of the first cylindrical section of the transition sleeve, and is welded to the piston rod by argon arc welding, with the weld height not protruding from the plane.

[0007] The beneficial effects of this utility model after adopting the above structure are as follows:

[0008] 1. Enhanced threaded connection strength: The combination of transition sleeve and reinforcing ring significantly improves the connection strength between piston rod and external connecting parts, effectively resisting loosening and separation during vibration and ensuring the stability of force transmission;

[0009] 2. Stress Dispersion: The stepped design of the transition sleeve can reasonably disperse stress, avoid stress concentration at critical connection parts, reduce the risk of fatigue cracks, and extend the service life of the structure.

[0010] 3. Preventing rotation: The structure of the reinforcing ring can effectively prevent relative rotation between the transition sleeve and the external connecting parts, ensuring the stability of the connection structure under complex stress conditions and maintaining the normal working condition of the nitrogen vibration damper.

[0011] 4. The reinforced piston rod connection structure of the nitrogen vibration damper of this utility model has the advantages of reasonable structure, reliable connection and strong fatigue resistance. It can well meet the use requirements of vibration damper under various working conditions and has good stress prospects. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Explanation of reference numerals in the attached figures:

[0014] 1. Lower connecting seat, 2. Piston rod, 3. Transition sleeve, 31. First cylindrical section, 32. Transition cone section, 33. Second cylindrical section, 4. Reinforcing ring. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0017] See Figure 1A nitrogen shock absorber piston rod connection reinforcement structure includes a lower connecting seat 1 and a piston rod 2, as well as a transition sleeve 3 and a reinforcing ring 4. The transition sleeve 3 is sleeved outside the connecting end of the piston rod 2 and disposed inside the lower connecting seat 1. The transition sleeve 3 has an internal threaded hole adapted to the piston rod 2 and an external thread adapted to the lower connecting seat 1. The transition sleeve 3 is fastened to the piston rod 2 through the internal threaded hole and fastened to the lower connecting seat 1 through the external threaded hole. The reinforcing ring is fixedly disposed inside the front end of the transition sleeve. Specifically, the piston rod is a slender rod-shaped structure. One end connects to the piston inside the shock absorber, and the other end is a connecting end for external connection. The outer surface of the connecting end is provided with external threads for installation with external connecting parts. The stepped design of the transition sleeve 3 can reasonably distribute stress, avoid stress concentration at key connection parts, reduce the risk of fatigue cracks, and extend the service life of the structure. Through the cooperation of the transition sleeve 3 and the reinforcing ring 4, the connection strength between the piston rod and the external connecting parts is significantly improved, effectively resisting loosening and detachment during vibration, and ensuring the stability of force transmission.

[0018] In this embodiment, the outer wall of the transition sleeve 3 is stepped, including a first cylindrical segment 31 near the piston rod end, a middle transition cone segment 32, and a second cylindrical segment 33 away from the piston rod end. The minor diameter of the first cylindrical segment 31 is smaller than the outer diameter of the second cylindrical segment 33. The transition cone segment 32 is used to achieve a smooth transition between the first and second cylindrical segments. A reinforcing ring 4 is provided inside the first cylindrical segment 31. This stepped structure can better disperse stress and avoid stress concentration at the connection point.

[0019] In this embodiment, the reinforcing ring 4 is located on the outside of the first cylindrical section 31 of the transition sleeve. It is welded to the piston rod by argon arc welding, and the weld height does not protrude from the plane, which further strengthens the connection and prevents relative rotation.

[0020] Installation steps of this utility model:

[0021] 1. First, put the lower connecting transition sleeve 4 on the connecting end of the piston rod 2, ensuring that the lower connecting transition sleeve covers a certain length of the connecting end near the end, and that its position is flat and without twisting or other issues.

[0022] 2. Next, a reinforcing ring is installed on the outer side of the first cylindrical section of the transition sleeve 3. The reinforcing ring and the piston rod are welded together by argon arc welding, and the weld height does not protrude from the plane.

[0023] 3. Then, screw the connecting seat 1 into the external thread of the transition seat 3 using its internal thread. During the screwing process, apply an appropriate amount of thread-locking adhesive to further enhance the tightness of the connection and prevent the threads from loosening. Tighten the threads to the specified torque using a suitable torque wrench to complete the installation of the entire nitrogen shock absorber piston rod connection reinforcement structure.

[0024] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A nitrogen gas damper piston rod connection reinforcement structure comprising a lower connection seat and a piston rod, characterized in that: It also includes a transition sleeve and a reinforcing ring; the transition sleeve is sleeved outside the connecting end of the piston rod and is arranged inside the lower connecting seat, the transition sleeve has an inner threaded hole matched with the piston rod and an outer thread matched with the lower connecting seat, the transition sleeve is fastened with the piston rod through the inner threaded hole, and the transition sleeve is fastened with the lower connecting seat through the outer threaded hole; the reinforcing ring is fixedly arranged at the inner front end of the transition sleeve.

2. The nitrogen damper piston rod connection reinforcement structure of claim 1, wherein: The outer side wall of the transition sleeve is arranged in a stepped shape and includes a first cylindrical segment close to one end of the piston rod, a transition conical segment in the middle, and a second cylindrical segment away from one end of the piston rod, the small diameter of the first cylindrical segment is smaller than the outer diameter of the second cylindrical segment, the transition conical segment is used to realize smooth transition between the first cylindrical segment and the second cylindrical segment, and the first cylindrical segment is internally provided with the reinforcing ring.

3. The nitrogen damper piston rod connection reinforcement structure of claim 2, wherein: The reinforcing ring is arranged outside the first cylindrical segment of the transition sleeve, is welded with the piston rod through argon arc welding, and the welding height does not protrude the plane.

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