一种伸缩杆的液压缓冲装置
By introducing a hydraulic buffer device into the telescopic rod, the flow of hydraulic oil provides cushioning, solving the problem of damage caused by impact during the inner rod's retraction and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI HAOLIKUN AUTOMATIC CONTROL EQUIP CO LTD
- Filing Date
- 2025-09-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing telescopic poles lack cushioning measures during the retraction of the inner pole, making the bottom of the inner pole susceptible to damage under large impacts, thus affecting its service life.
A hydraulic buffer device was designed, including an inner rod, an outer rod, a buffer seat, a cylinder, and a piston. The device provides a buffering effect through the flow of hydraulic oil to prevent the inner rod from retracting too quickly.
It effectively prevents damage to the bottom of the inner rod due to impact, thus extending the service life of the telescopic rod.
Smart Images
Figure CN224515776U_ABST
Abstract
Claims
1. Hydraulic damping device for telescopic poles comprising an inner pole (1) and an outer pole (2), characterized in that, The bottom end of the outer rod (2) is connected to a buffer seat (3). The buffer seat (3) is a double-layer structure consisting of an oil cylinder (4) and a working cylinder (5) from the inside to the outside. The bottom of the oil cylinder (4) is distributed with several sets of first flow holes (6). The top of the oil cylinder (4) is surrounded by several sets of second flow holes (7). A piston (8) is slidably arranged inside the oil cylinder (4). A slide rod (9) is fixedly connected to the piston (8). The end of the slide rod (9) extends out of the top of the outer rod (2) and is fixedly connected to a contact plate (10).
2. The hydraulic buffer device of the extension rod according to claim 1, wherein A spring (11) is provided between the top of the outer rod (2) and the contact plate (10), and the spring (11) is nested on the surface of the slide rod (9).
3. The hydraulic buffer device of a telescopic rod according to claim 1, wherein An oil seal lip (12) is provided between the top of the inner rod (1) and the slide rod (9).
4. The hydraulic buffer device of a telescopic rod according to claim 1, wherein The bottom of the outer rod (2) is provided with a first threaded opening (13), and the top of the buffer seat (3) is provided with a second threaded opening (14). The first threaded opening (13) and the second threaded opening (14) are threadedly engaged.
5. The hydraulic buffer device of the extension rod according to claim 1, wherein The working cylinder (5) has a movable plate (15) at its bottom. The movable plate (15) has fixed blocks (16) corresponding to the first flow hole (6). The first flow hole (6) and the block (16) are conical structures that fit together. The bottom of the inner rod (1) is fixedly provided with a screw sleeve (17). The screw sleeve (17) is internally threaded with an adjusting screw (18). The adjusting screw (18) extends into the working cylinder (5) and is rotatably connected to the movable plate (15).
6. The hydraulic buffer device for a telescopic rod according to claim 5, characterized in that, The edge of the movable plate (15) is provided with a guide groove (19), and the inner wall of the working cylinder (5) is provided with a guide strip (20) corresponding to the guide groove (19).