Feedback piston assembly for adaptive damping hydraulic cylinder

Abstract

The utility model relates to hydraulic cylinder technical field especially is feedback type piston subassembly of adaptive damping hydraulic cylinder, including cylinder body, the top of cylinder body is installed with damping feedback mechanism, the inside installation of damping feedback mechanism has damping adjustment mechanism, the cylinder body includes main part, the inside swing joint of main part has mobile piston, the damping feedback mechanism includes outer tube, inner tube, the top fixed mounting of main part has, the inner tube installs in the inside of outer tube, the inner wall of outer tube is equipped with first passageway, the inside of first passageway is equipped with discharge port, the outer surface of inner tube is equipped with second passageway, the inside of second passageway is equipped with inlet, the damping adjustment mechanism includes adjusting piston, adjusting piston swing installation is in the inside of inner tube. The utility model provides a kind of dynamic adjustment damping force according to the working state of hydraulic cylinder and external load and other factors.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinders, and in particular to a feedback piston assembly for an adaptive damping hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). The feedback piston assembly of an adaptive damping hydraulic cylinder is a piston assembly that can adjust the damping force according to factors such as the working state of the hydraulic cylinder and external load.

[0003] The feedback piston assembly of the adaptive damping hydraulic cylinder stems from the need for more efficient vibration reduction technology. Traditional vibration reduction technologies have significant drawbacks such as low adaptability and reliance on external power sources. As vibration control requirements increase across various fields, there is a need for devices that can adjust damping force according to real-time operating conditions, thereby improving equipment stability and comfort. Utility Model Content

[0004] In view of this, the present invention provides a feedback piston assembly for an adaptive damping hydraulic cylinder. The main technical problem to be solved is: to provide a system that can dynamically adjust the damping force according to factors such as the working state of the hydraulic cylinder and external load.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a feedback piston assembly for an adaptive damping hydraulic cylinder, comprising a cylinder body, a damping feedback mechanism mounted on the top of the cylinder body, a damping adjustment mechanism mounted inside the damping feedback mechanism, the cylinder body comprising a main body, a movable piston movably connected inside the main body, the damping feedback mechanism comprising an outer cylinder and an inner cylinder, the outer cylinder being fixedly mounted on the top of the main body, the inner cylinder being mounted inside the outer cylinder, a first channel being formed on the inner wall of the outer cylinder, an outlet being formed inside the first channel, a second channel being formed on the outer surface of the inner cylinder, an inlet being formed inside the second channel, the positions of the first channel and the second channel corresponding to each other, and the damping adjustment mechanism comprising an adjustment piston movably mounted inside the inner cylinder.

[0006] By adopting the above technical solution, during use, the inner cylinder is installed inside the outer cylinder, allowing the first and second channels to be combined to form a complete hydraulic oil passage. By changing the position of the adjusting piston, part of the inlet can be blocked. When part of the inlet is blocked, the inflow and outflow of hydraulic oil will change. When the load increases, the adjusting piston moves downward, reducing the effective opening area of ​​the inlet, thus reducing the inflow of hydraulic oil and relatively increasing the outflow, thereby increasing the damping force and effectively suppressing vibration and impact. When the load decreases, the adjusting piston moves upward, increasing the opening area of ​​the inlet, thus increasing the inflow of hydraulic oil and relatively decreasing the outflow, thereby reducing the damping force and improving the system's response speed and flexibility, thereby achieving the purpose of adjusting the damping force.

[0007] As a further description of the above technical solution:

[0008] A first connecting pipe is fixedly connected to the outer surface of the main body, and the first connecting pipe is connected to the inner wall of the main body. A second connecting pipe is fixedly connected to the outer surface of the outer cylinder, and the second connecting pipe is connected to the first channel through the outlet.

[0009] By adopting the above technical solution, hydraulic oil can be easily entered or discharged from the hydraulic cylinder through the first connecting pipe and the second connecting pipe.

[0010] As a further description of the above technical solution:

[0011] The outer cylinder has a slot at its inner top, and a block is fixedly connected to the top of the inner cylinder, with the block located inside the slot.

[0012] By adopting the above technical solution, the second channel on the inner cylinder and the first channel on the outer cylinder can be accurately aligned through the cooperation of the slot and the block.

[0013] As a further description of the above technical solution:

[0014] A threaded ring is fixedly connected to the top of the outer cylinder, and the damping adjustment mechanism also includes a threaded cap, which is threadedly connected to the threaded ring, and the bottom of the threaded cap is in contact with the top of the inner cylinder.

[0015] By adopting the above technical solution, the inner cylinder can be fixed by installing the threaded cap on the threaded ring, thus preventing gaps and other problems between the inner and outer cylinders.

[0016] As a further description of the above technical solution:

[0017] The top of the threaded cap has a threaded hole, and the top of the adjusting piston is fixedly connected to a threaded rod, which is installed inside the threaded hole.

[0018] By adopting the above technical solution, the piston can be controlled to move up and down by rotating the threaded rod, thereby blocking part of the inlet.

[0019] As a further description of the above technical solution:

[0020] The outer surface of the movable piston is in contact with the inner wall of the main body, and the outer surface of the adjusting piston is in contact with the inner surface of the inner cylinder.

[0021] By adopting the above technical solution, the use of hydraulic cylinders becomes easier.

[0022] By employing the above technical solution, the feedback piston assembly of the adaptive damping hydraulic cylinder of this utility model has at least the following beneficial effects:

[0023] 1. Compared with existing technologies, the feedback piston assembly of this adaptive damping hydraulic cylinder, through the coordinated action of the damping feedback mechanism and the damping adjustment mechanism, can adjust the damping force in real time according to the working state of the hydraulic cylinder and changes in external load. When the equipment is under a large load, the adjusting piston automatically moves downward to reduce the effective area of ​​the inlet, reduce the inflow of hydraulic oil and increase the outflow, thereby enhancing the damping effect and suppressing vibration; under light load conditions, the adjusting piston moves upward to expand the channel opening, making the system response faster and more flexible. This dynamic adjustment mechanism significantly improves the stability and adaptability of equipment operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0025] Figure 2 This is a cross-sectional view of the internal structure proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the outer and inner cylinder structures from a first-view perspective, as proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the outer and inner cylinder structures from a second perspective, as proposed in this utility model.

[0028] Legend:

[0029] 1. Cylinder body; 101. Main body; 102. Moving piston; 103. First connecting pipe; 2. Damping feedback mechanism; 201. Outer cylinder; 202. Threaded ring; 203. Slot; 204. First channel; 205. Outlet; 206. Second connecting pipe; 207. Inner cylinder; 208. Locking block; 209. Second channel; 210. Inlet; 3. Damping adjustment mechanism; 301. Threaded cap; 302. Threaded hole; 303. Threaded rod; 304. Adjusting piston. Detailed Implementation

[0030] Reference Figure 1-4 The adaptive damping hydraulic cylinder feedback piston assembly provided by this utility model includes a cylinder body 1, a damping feedback mechanism 2 installed on the top of the cylinder body 1, a damping adjustment mechanism 3 installed inside the damping feedback mechanism 2, a main body 101, a movable piston 102 movably connected inside the main body 101, the movable piston 102 being able to move up and down within the main body 101, and the outer surface of the movable piston 102 being in contact with the inner wall of the main body 101, and the damping feedback mechanism 2 including an outer cylinder 201 and an inner cylinder 207, the outer cylinder 201 being fixed. Installed on top of the main body 101, the inner cylinder 207 is installed inside the outer cylinder 201. A first channel 204 is formed on the inner wall of the outer cylinder 201, and a discharge port 205 is formed inside the first channel 204. A second channel 209 is formed on the outer surface of the inner cylinder 207, and an inlet 210 is formed inside the second channel 209. Hydraulic oil enters the second channel 209 through the inlet 210, then enters the first channel 204 from the second channel 209, and finally exits from the discharge port 205 in the first channel 204. The position of 4 corresponds to the position of the second channel 209. The damping adjustment mechanism 3 includes an adjusting piston 304, which is movably installed inside the inner cylinder 207. The outer surface of the adjusting piston 304 is in contact with the inner surface of the inner cylinder 207. In use, the inner cylinder 207 is installed inside the outer cylinder 201, so that the first channel 204 and the second channel 209 can be combined to form a complete channel for hydraulic oil to pass through. Changing the position of the adjusting piston 304 can block part of the inlet 210. When part of the inlet 210 is blocked, the amount of hydraulic oil entering and exiting will change. When the load increases, the adjusting piston 304 moves downward to reduce the effective opening area of ​​the inlet 210, so that the amount of hydraulic oil entering decreases and the amount of oil exiting relatively increases, thereby increasing the damping force and effectively suppressing vibration and impact. When the load decreases, the adjusting piston 304 moves upward to increase the opening area of ​​the inlet 210, so that the amount of hydraulic oil entering increases and the amount of oil exiting relatively decreases, thereby reducing the damping force and improving the system's response speed and flexibility, thereby achieving the purpose of adjusting the damping force.

[0031] A first connecting pipe 103 is fixedly connected to the outer surface of the main body 101. The first connecting pipe 103 is connected to the inner wall of the main body 101. A second connecting pipe 206 is fixedly connected to the outer surface of the outer cylinder 201. The second connecting pipe 206 is connected to the first channel 204 through the outlet 205. The first connecting pipe 103 and the second connecting pipe 206 facilitate the entry or exit of hydraulic oil into or out of the hydraulic cylinder.

[0032] The outer cylinder 201 has a slot 203 at its inner top. The inner cylinder 207 has a fixed block 208 at its top. The block 208 is located inside the slot 203. The slot 203 and the block 208 work together to make the second channel 209 on the inner cylinder 207 and the first channel 204 on the outer cylinder 201 accurately overlap. The outer cylinder 201 has a fixed threaded ring 202 at its top. The damping adjustment mechanism 3 also includes a threaded cap 301. The threaded cap 301 is threaded onto the threaded ring 202. The bottom of the threaded cap 301 fits against the top of the inner cylinder 207. By installing the threaded cap 301 on the threaded ring 202, the inner cylinder 207 can be fixed, preventing gaps between the inner cylinder 207 and the outer cylinder 201.

[0033] The top of the threaded cap 301 has a threaded hole 302, and the top of the adjusting piston 304 is fixedly connected to a threaded rod 303. The threaded rod 303 is installed inside the threaded hole 302. By rotating the threaded rod 303, the adjusting piston 304 can be controlled to move up and down to block part of the inlet 210.

[0034] Working principle: When the hydraulic cylinder starts working, hydraulic oil enters the main body through the first connecting pipe, pushing the moving piston to perform linear reciprocating motion. At this time, the hydraulic oil in the damping feedback mechanism enters the second channel through the inlet, then flows out from the outlet through the first channel, and finally exits the hydraulic cylinder through the second connecting pipe. When the load increases, the operator can rotate the threaded rod to move the adjusting piston downward. Because the outer surface of the adjusting piston is in close contact with the inner surface of the inner cylinder, its downward movement reduces the effective opening area of ​​the inlet, reducing the amount of hydraulic oil entering and relatively increasing the amount exiting, thereby increasing the damping force and effectively suppressing vibration and impact. When the load decreases, rotating the threaded rod in the opposite direction moves the adjusting piston upward, increasing the opening area of ​​the inlet, increasing the amount of hydraulic oil entering and relatively decreasing the amount exiting, thereby reducing the damping force and improving the system's response speed and flexibility.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A feedback piston assembly for an adaptive damping hydraulic cylinder, comprising a cylinder body (1), characterized in that: A damping feedback mechanism (2) is installed on the top of the cylinder (1), and a damping adjustment mechanism (3) is installed inside the damping feedback mechanism (2). The cylinder (1) includes a main body (101), and a movable piston (102) is movably connected inside the main body (101). The damping feedback mechanism (2) includes an outer cylinder (201) and an inner cylinder (207). The outer cylinder (201) is fixedly installed on the top of the main body (101), and the inner cylinder (207) is installed inside the outer cylinder (201). The inner wall of the inner cylinder (207) is provided with a first channel (204), and the inside of the first channel (204) is provided with an outlet (205). The outer surface of the inner cylinder (207) is provided with a second channel (209), and the inside of the second channel (209) is provided with an inlet (210). The position of the first channel (204) corresponds to the position of the second channel (209). The damping adjustment mechanism (3) includes an adjustment piston (304), which is movably installed inside the inner cylinder (207).

2. The feedback piston assembly of the adaptive damping hydraulic cylinder according to claim 1, characterized in that: The outer surface of the main body (101) is fixedly connected to a first connecting pipe (103), which is connected to the inner wall of the main body (101). The outer surface of the outer cylinder (201) is fixedly connected to a second connecting pipe (206), which is connected to the first channel (204) through a discharge port (205).

3. The feedback piston assembly of the adaptive damping hydraulic cylinder according to claim 1, characterized in that: The outer cylinder (201) has a slot (203) at its inner top, and the inner cylinder (207) has a fixed block (208) at its top, with the block (208) located inside the slot (203).

4. The feedback piston assembly of the adaptive damping hydraulic cylinder according to claim 1, characterized in that: The top of the outer cylinder (201) is fixedly connected to a threaded ring (202), and the damping adjustment mechanism (3) also includes a threaded cap (301), which is threadedly connected to the threaded ring (202), and the bottom of the threaded cap (301) is in contact with the top of the inner cylinder (207).

5. The feedback piston assembly of the adaptive damping hydraulic cylinder according to claim 4, characterized in that: The top of the threaded cap (301) is provided with a threaded hole (302), and the top of the adjusting piston (304) is fixedly connected with a threaded rod (303), which is installed inside the threaded hole (302).

6. The feedback piston assembly of the adaptive damping hydraulic cylinder according to claim 1, characterized in that: The outer surface of the movable piston (102) is in contact with the inner wall of the main body (101), and the outer surface of the adjusting piston (304) is in contact with the inner surface of the inner cylinder (207).

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