Damping hydraulic cylinder
By combining the dual mechanism of hydraulic shock absorption and spring shock absorption in the shock-absorbing hydraulic cylinder, the existing shock absorption method has limited effect during high frequency and large vibrations, and a more efficient vibration absorption and attenuation effect is achieved.
Patent Information
- Application Number
- CN202421995886.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-17
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-08-17
AI Technical Summary
The existing shock absorption methods have limited effects when facing high-frequency and large vibrations, making it difficult to effectively absorb and attenuate vibration energy.
A dual shock absorbing hydraulic cylinder combining hydraulic shock absorption and spring shock absorption is adopted to absorb and attenuate vibration energy through the oil damping action in the hydraulic cylinder and the elastic deformation of the shock absorbing spring.
It realizes effective absorption and attenuation of high-frequency and large vibrations, improves shock absorption effect, can quickly respond and absorb a large amount of impact energy.
Smart Images
Figure CN222848449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of shock absorption, and in particular to a shock absorption hydraulic cylinder. Background Art
[0002] In many industrial fields, such as engineering machinery, metallurgical machinery, aerospace, shipbuilding, etc., equipment often generates vibration during operation.
[0003] Although current shock absorption methods, such as rubber shock pads and metal spring shock absorbers, can absorb and attenuate vibrations to a certain extent, their effectiveness is often limited when faced with high-frequency and large-scale vibrations. Utility Model Content
[0004] In order to overcome the above-mentioned shortcomings, the utility model provides a shock-absorbing hydraulic cylinder.
[0005] The technical solution adopted by this utility model:
[0006] The top of the sleeve is open, the bottom of the sleeve is closed, and a hydraulic cylinder is arranged inside the sleeve. The height of the sleeve is consistent with the height of the cylinder barrel of the hydraulic cylinder. The bottom of the cylinder barrel of the hydraulic cylinder is fixedly connected to the inner bottom wall of the sleeve. The hydraulic cylinder includes a piston rod slidably inserted inside. The piston rod and the hydraulic cylinder slide together. The top of the piston rod is at the top of the cylinder barrel of the hydraulic cylinder. The top of the piston rod is fixedly connected to a connecting head. The bottom outer edge of the connecting head is fixedly connected to a limited shock-absorbing pad. The limited shock-absorbing pad is annular and has a diameter equal to the diameter of the sleeve. A shock-absorbing spring is arranged on the inner side of the sleeve. The shock-absorbing spring is sleeved on the outer wall of the cylinder barrel of the hydraulic cylinder. The shock-absorbing spring is gap-matched with the inner wall of the sleeve and the outer wall of the cylinder barrel of the hydraulic cylinder. The bottom end of the shock-absorbing spring is fixedly connected to the inner bottom wall of the sleeve. The shock-absorbing spring is gap-matched with the outer wall of the hydraulic cylinder and the inner wall of the sleeve. The shock-absorbing spring extends upward to the outside of the piston rod.
[0007] Beneficial effects of the utility model:
[0008] The utility model combines the two mechanisms of spring shock absorption and hydraulic shock absorption to achieve a double shock absorption effect. The spring shock absorption can respond quickly and absorb a large amount of impact energy, while the hydraulic shock absorption further attenuates vibration through the damping effect of oil, thereby improving the shock absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the structure of the utility model;
[0010] Figure 2 yes Figure 1 Sectional view at AA;
[0011] Figure 3 It is a three-dimensional schematic diagram of the utility model for removing the sleeve;
[0012] Figure 4 This is a schematic diagram of the structure of the utility model in a tightened state;
[0013] Figure 5 yes Figure 4 Cross-section view at the middle BB.
[0014] The specific reference numerals in all the drawings are: 1. sleeve; 2. hydraulic cylinder; 3. piston rod; 4. connecting head; 5. limit shock-absorbing pad; 6. shock-absorbing spring. DETAILED DESCRIPTION
[0015] like Figure 1-5 As shown: a shock-absorbing hydraulic cylinder includes a sleeve 1, the top of the sleeve 1 is open, the bottom of the sleeve 1 is closed, the sleeve 1 has a hydraulic cylinder 2 inside, the height of the sleeve 1 is consistent with the cylinder height of the hydraulic cylinder 2, the bottom of the cylinder of the hydraulic cylinder 2 is fixedly connected to the inner bottom wall of the sleeve 1, the hydraulic cylinder 2 includes a piston rod 3 slidably inserted inside, the piston rod 3 and the hydraulic cylinder 2 are slidably matched, the top of the piston rod 3 is at the top of the cylinder of the hydraulic cylinder 2, the top of the piston rod 3 is fixedly connected to a connector 4, the connector The outer edge of the bottom of 4 is fixedly connected with a limited shock-absorbing pad 5, which is annular and has a diameter equal to that of the sleeve 1. The inner side of the sleeve 1 is provided with a shock-absorbing spring 6, which is sleeved on the outer wall of the cylinder barrel of the hydraulic cylinder 2, and the shock-absorbing spring 6 has a clearance fit with the inner wall of the sleeve 1 and the outer wall of the cylinder barrel of the hydraulic cylinder 2. The bottom end of the shock-absorbing spring 6 is fixedly connected with the inner bottom wall of the sleeve 1, and the shock-absorbing spring 6 has a clearance fit with the outer wall of the hydraulic cylinder 2 and the inner wall of the sleeve 1, and the shock-absorbing spring 6 extends upward to the outside of the piston rod 3.
[0016] The hydraulic cylinder 2 is fixedly mounted on the inner bottom wall of the sleeve 1 , the piston rod 3 is in an initial position in the hydraulic cylinder 2 , and the connector 4 and the limit shock-absorbing pad 5 are located above the hydraulic cylinder 2 .
[0017] The damping spring 6 is sleeved on the outside of the hydraulic cylinder 2, with the bottom end fixed on the inner bottom wall of the sleeve 1, and the upper end extending to the outside of the piston rod 3 but kept in a relaxed state.
[0018] When the shock-absorbing hydraulic cylinder is subjected to external impact or vibration, the piston rod 3 starts to slide up and down in the hydraulic cylinder 2, pushing the oil in the hydraulic cylinder to flow. During the flow of the oil in the hydraulic cylinder, the friction with the inner wall and the internal friction of the liquid molecules form a damping force, thereby reducing the vibration.
[0019] At the same time, the shock absorbing spring 6 also begins to be compressed, absorbing and storing vibration energy through its elastic deformation, and releasing energy when the vibration weakens, helping the system to return to a stable state.
[0020] As the vibration energy is continuously absorbed and attenuated, the sliding of the piston rod 3 gradually slows down, the flow of the oil in the hydraulic cylinder gradually becomes stable, and the damping force decreases.
[0021] The impact between the connector 4 and the sleeve 1 is reduced by the limiting shock-absorbing pad 5 .
[0022] After reaching the maximum compression amount, the shock absorbing spring 6 begins to gradually release energy, pushing the piston rod 3 and the connecting head 4 to return to the original position, while continuing to absorb and attenuate the remaining vibration energy.
Claims
1. A shock absorbing hydraulic cylinder, characterized in that: The invention comprises a sleeve (1), the top of the sleeve (1) is open, the bottom of the sleeve (1) is closed, a hydraulic cylinder (2) is arranged inside the sleeve (1), the height of the sleeve (1) is consistent with the height of the cylinder barrel of the hydraulic cylinder (2), the bottom of the cylinder barrel of the hydraulic cylinder (2) is fixedly connected to the inner bottom wall of the sleeve (1), the hydraulic cylinder (2) comprises a piston rod (3) slidably inserted inside, the piston rod (3) and the hydraulic cylinder (2) are slidably matched, the top end of the piston rod (3) is at the top end of the cylinder barrel of the hydraulic cylinder (2), the top end of the piston rod (3) is fixedly connected to a connector (4), and the bottom of the connector (4) is fixedly connected to the top end of the piston rod (3). A limited shock-absorbing pad (5) is fixedly connected to the outer edge. The limited shock-absorbing pad (5) is annular and has a diameter equal to that of the sleeve (1). A shock-absorbing spring (6) is provided inside the sleeve (1). The shock-absorbing spring (6) is sleeved on the outer wall of the cylinder barrel of the hydraulic cylinder (2). The shock-absorbing spring (6) is clearance-matched with the inner wall of the sleeve (1) and the outer wall of the cylinder barrel of the hydraulic cylinder (2). The bottom end of the shock-absorbing spring (6) is fixedly connected to the inner bottom wall of the sleeve (1). The shock-absorbing spring (6) is clearance-matched with the outer wall of the hydraulic cylinder (2) and the inner wall of the sleeve (1). The shock-absorbing spring (6) extends upward to the outside of the piston rod (3).