Retarding protection device for hydraulic oil cylinder
By designing the hydraulic cylinder retarding protection device, the problems of piston impact and retarding lever offset during the resetting of large equipment are solved, and pressure relief and guidance is achieved, which extends the service life of the equipment and reduces the damage to retarding lever.
Patent Information
- Application Number
- CN202422215933.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the resetting of the robot arm of large equipment, existing hydraulic cylinders are difficult to reset slowly, resulting in impact on the piston and cylinder, affecting service life, and the retarding lever is easily offset and bent.
A hydraulic cylinder retarding protection device is designed to drive the reduction disc and sealing plate through the retarding lever to remove excessive pressure, and guide the retarding lever through the limiting lever and the limiting column to prevent bending.
Effectively remove large pressure, extend the service life of the hydraulic cylinder, reduce the damage to the retarding lever, and improve the stability of the equipment.
Smart Images
Figure CN223136556U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic cylinder protection, in particular to a hydraulic cylinder slow-down protection device. Background Technique
[0002] A hydraulic cylinder is a type of fluid pressure actuator, which is mainly applied to some equipment with large load-bearing capacity, such as mechanical equipment like cranes, excavators, and forklifts. The hydraulic cylinder can provide stable power for these large equipment and ensure the normal operation of construction operations. In actual use, due to the large self-weight of the hydraulic equipment, it is very difficult to slowly reset these heavy mechanical arms during the reset process of the mechanical arms of large equipment. It is easy for the piston and the bottom wall of the cylinder of the hydraulic cylinder to be subjected to a large impact due to the sharp drop of the mechanical arm.
[0003] However, the existing devices have the following problems:
[0004] 1. The existing devices mainly cannot relieve greater pressure when the hydraulic cylinder is under great pressure, so that when the hydraulic cylinder is under great pressure, it is easy to cause the piston and the cylinder to burst, affecting the service life of the hydraulic cylinder.
[0005] 2. At the same time, some devices do not set that the slow-down rod is prone to offset force when under pressure, so that the offset force during the use of the slow-down rod causes the slow-down rod to bend, and it is easy to damage the slow-down rod.
[0006] Therefore, in order to solve the above problems, a hydraulic cylinder slow-down protection device is proposed. Content of the Utility Model
[0007] The purpose of the utility model is to provide a hydraulic cylinder slow-down protection device to solve the problem of hydraulic cylinder protection in the existing technology mentioned in the above background technique.
[0008] To achieve the above purpose, the utility model provides the following technical solution: A hydraulic cylinder slow-down protection device includes a connection barrel, a support plate, and a hydraulic pipe. A support plate is arranged below the connection barrel, a hydraulic pipe is arranged outside the connection barrel, a slow-down rod is movably connected above the connection barrel, a deceleration disk is movably connected inside the connection barrel, a sealing piece is movably connected inside the deceleration disk, a limiting piece is movably connected inside the deceleration disk, a folding pipe is fixedly connected above the connection barrel, a discharge pipe is fixedly connected above the folding pipe, a limiting piece is fixedly connected outside the slow-down rod, and a movable ring is fixedly connected outside the connection barrel.
[0009] Preferably, a connection piece is fixedly connected above the connection barrel, and a connection bolt is fixedly connected above the connection piece.
[0010] Preferably, a support foot is fixedly connected to the lower part of the support plate, and a sealing rod is fixedly connected to the upper part of the support plate.
[0011] Preferably, a hydraulic head is fixedly connected to the outside of the hydraulic pipe, and a connector is fixedly connected to the outside of the hydraulic head.
[0012] Preferably, a deceleration disc is fixedly connected to the lower part of the deceleration rod, a sealing ring is fixedly connected to the outside of the deceleration disc, a connecting ring is fixedly connected to the inside of the deceleration disc, a sealing piece is movably connected to the upper part of the connecting ring, a pulling spring is fixedly connected to the lower part of the sealing piece, a limiting piece is fixedly connected to the lower part of the pulling spring, and a limiting elastic piece is fixedly connected to the inside of the limiting piece.
[0013] Preferably, a circulation pipe is fixedly connected to the lower part of the folding pipe, a connection switch is fixedly connected to the left side of the discharge pipe, a switch rod is movably connected to the rear of the connection switch, and a switch disc is fixedly connected to the outside of the switch rod.
[0014] Preferably, a limiting column is fixedly connected to the lower part of the limiting piece, a movable ball is movably connected to the outside of the limiting column, a movable ring is movably connected to the outside of the movable ball, a limiting spring is movably connected to the lower part of the movable ring, and a limiting bolt is movably connected to the lower part of the limiting spring.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: when a huge force is applied to the deceleration rod and the deceleration rod is pressed downward, the deceleration rod drives the deceleration disc, and the deceleration disc drives the sealing ring. When the pressure is too high, the hydraulic pressure pushes the limiting elastic piece, and the hydraulic pressure pushes the sealing piece, preventing the excess liquid from flowing to the upper part of the deceleration disc when the pressure is too high. By opening the connection switch, the excess liquid above the deceleration disc is discharged. When the deceleration rod moves downward, the deceleration rod drives the limiting piece, and the limiting piece drives the limiting column. Through the elastic force of the limiting spring and the sliding of the movable ball, the deceleration rod is guided when it moves downward, preventing the deceleration rod from bending when it moves downward.
[0016] 1. The present utility model is fixedly connected with a deceleration disc at the lower part of the deceleration rod, a sealing ring is fixedly connected to the outside of the deceleration disc, a connecting ring is fixedly connected to the inside of the deceleration disc, a sealing piece is movably connected to the upper part of the connecting ring, a pulling spring is fixedly connected to the lower part of the sealing piece, a limiting piece is fixedly connected to the lower part of the pulling spring, and a limiting elastic piece is fixedly connected to the inside of the limiting piece. A circulation pipe is fixedly connected to the lower part of the folding pipe, a connection switch is fixedly connected to the left side of the discharge pipe, a switch rod is movably connected to the rear of the connection switch, and a switch disc is fixedly connected to the outside of the switch rod, which can relieve greater pressure when the hydraulic cylinder is under great pressure and improve the service life of the hydraulic cylinder.
[0017] 2. In the present utility model, a limiting post is fixedly connected below the limiting piece. An activity ball is movably connected to the outer side of the limiting post. An activity ring is movably connected to the outer side of the activity ball. A limiting spring is movably connected below the activity ring. A limiting bolt is movably connected below the limiting spring, which can guide the offset force generated during the use of the slow-down rod and reduce the damage of the slow-down rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a front view schematic diagram of the structure of the present utility model;
[0019] Figure 2 It is a top view schematic diagram of the structure of the present utility model;
[0020] Figure 3 It is a top view schematic diagram of the deceleration disc of the structure of the present utility model;
[0021] Figure 4 It is a front view schematic diagram of the sealing piece of the structure of the present utility model;
[0022] Figure 5 It is a top view schematic diagram of the connecting ring of the structure of the present utility model.
[0023] In the figure: 1. Connecting barrel; 101. Connecting piece; 102. Connecting bolt; 2. Support plate; 201. Support foot; 202. Sealing rod; 3. Hydraulic pipe; 301. Hydraulic head; 302. Connecting head; 4. Slow-down rod; 401. Deceleration disc; 402. Sealing ring; 403. Connecting ring; 404. Sealing piece; 405. Pulling spring; 406. Limiting piece; 407. Limiting elastic piece; 5. Folding pipe; 501. Circulation pipe; 502. Discharge pipe; 503. Connecting switch; 504. Switch rod; 505. Switch disc; 6. Limiting piece; 601. Limiting post; 602. Limiting spring; 603. Limiting bolt; 604. Activity ring; 605. Activity ball. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Please refer to Figures 1-5 , an embodiment provided by the present utility model:
[0026] A hydraulic cylinder slow-down protection device, comprising a connecting barrel 1, a support plate 2 and a hydraulic pipe 3. The support plate 2 is arranged below the connecting barrel 1, and the hydraulic pipe 3 is arranged outside the connecting barrel 1. It is characterized in that: a slow-down rod 4 is movably connected above the connecting barrel 1, a speed reduction disc 401 is movably connected inside the connecting barrel 1, a sealing piece 404 is movably connected inside the speed reduction disc 401, a limiting piece 406 is movably connected inside the speed reduction disc 401, a folding pipe 5 is fixedly connected above the connecting barrel 1, a discharge pipe 502 is fixedly connected above the folding pipe 5, a limiting piece 6 is fixedly connected outside the slow-down rod 4, and a movable ring 604 is fixedly connected outside the connecting barrel 1.
[0027] Further, a speed reduction disc 401 is fixedly connected below the slow-down rod 4, a sealing ring 402 is fixedly connected outside the speed reduction disc 401, a connecting ring 403 is fixedly connected inside the speed reduction disc 401, the sealing piece 404 is movably connected above the connecting ring 403, a pulling spring 405 is fixedly connected below the sealing piece 404, a limiting piece 406 is fixedly connected below the pulling spring 405, a limiting elastic piece 407 is fixedly connected inside the limiting piece 406. By driving the sealing piece 404 with hydraulic oil, the pressure can be relieved when the pressure is too high.
[0028] Further, a circulation pipe 501 is fixedly connected below the folding pipe 5, a connecting switch 503 is fixedly connected on the left side of the discharge pipe 502, a switch rod 504 is movably connected behind the connecting switch 503, and a switch disc 505 is fixedly connected outside the switch rod 504. By opening the connecting switch 503, the liquid flowing above the speed reduction disc 401 can be discharged.
[0029] Further, a limiting column 601 is fixedly connected below the limiting piece 6, a movable ball 605 is movably connected outside the limiting column 601, the movable ball 605 is movably connected outside the movable ring 604, a limiting spring 602 is movably connected below the movable ring 604, and a limiting bolt 603 is movably connected below the limiting spring 602. By guiding of the limiting column 601, the force of the slow-down rod 4 offset can be removed.
[0030] Working principle: During the use of this device, first fix the hydraulic cylinder on the vehicle. When a huge force acts on the retarder rod 4 and presses the retarder rod 4 downward, the retarder rod 4 drives the deceleration disk 401 to move downward, and the deceleration disk 401 drives the sealing ring 402 to move downward. When the pressure is too high, the limiting elastic piece 407 is pushed by the hydraulic pressure, and the sealing piece 404 is pushed by the hydraulic pressure to prevent the excess liquid from flowing above the deceleration disk 401 when the pressure is too high. By turning on the connection switch 503, the excess liquid above the deceleration disk 401 is discharged. When the retarder rod 4 moves downward, the retarder rod 4 drives the limiting piece 6 to move downward, and the limiting piece 6 drives the limiting column 601 to move downward. Through the elasticity of the limiting spring 602 and the sliding of the movable ball 605, the retarder rod 4 is guided when the retarder rod 4 moves downward to prevent the retarder rod 4 from bending when the retarder rod 4 moves downward.
[0031] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention; any ordinary technician in the industry can smoothly implement the present invention according to the instructions in the attached drawings and the above description; however, any minor changes, modifications and equivalent changes made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A hydraulic cylinder slow-down protection device, comprising: Connect the connecting barrel (1), the support plate (2) and the hydraulic pipe (3). There is a support plate (2) below the connecting barrel (1), and a hydraulic pipe (3) is arranged outside the connecting barrel (1). It is characterized in that: a slow-down rod (4) is movably connected above the connecting barrel (1), a deceleration disc (401) is movably connected inside the connecting barrel (1), a sealing piece (404) is movably connected inside the deceleration disc (401), a limiting piece (406) is movably connected inside the deceleration disc (401), a folding pipe (5) is fixedly connected above the connecting barrel (1), a discharge pipe (502) is fixedly connected above the folding pipe (5), a limiting piece (6) is fixedly connected outside the slow-down rod (4), and a movable ring (604) is fixedly connected outside the connecting barrel (1).
2. The hydraulic cylinder slow-speed protection device according to claim 1, characterized in that: A connecting piece (101) is fixedly connected above the connecting barrel (1), and a connecting bolt (102) is fixedly connected above the connecting piece (101).
3. A hydraulic cylinder slow-down protection device according to claim 1, characterized in that: Support feet (201) are fixedly connected below the support plate (2), and a sealing rod (202) is fixedly connected above the support plate (2).
4. A hydraulic cylinder slow-down protection device according to claim 1, characterized in that: A hydraulic head (301) is fixedly connected outside the hydraulic pipe (3), and a connecting head (302) is fixedly connected outside the hydraulic head (301).
5. A hydraulic cylinder slow-down protection device according to claim 1, characterized in that: A deceleration disc (401) is fixedly connected below the slow-down rod (4), a sealing ring (402) is fixedly connected outside the deceleration disc (401), a connecting ring (403) is fixedly connected inside the deceleration disc (401), a sealing piece (404) is movably connected above the connecting ring (403), a pulling spring (405) is fixedly connected below the sealing piece (404), a limiting piece (406) is fixedly connected below the pulling spring (405), and a limiting elastic piece (407) is fixedly connected inside the limiting piece (406).
6. The hydraulic cylinder slow-down protection device according to claim 1, characterized in that: A circulation pipe (501) is fixedly connected below the folding pipe (5), a connection switch (503) is fixedly connected on the left side of the discharge pipe (502), a switch rod (504) is movably connected behind the connection switch (503), and a switch disc (505) is fixedly connected outside the switch rod (504).
7. A hydraulic cylinder slow-down protection device according to claim 1, characterized in that: A limiting column (601) is fixedly connected below the limiting piece (6), a movable ball (605) is movably connected outside the limiting column (601), the movable ball (605) is movably connected outside the movable ring (604), a limiting spring (602) is movably connected below the movable ring (604), and a limiting bolt (603) is movably connected below the limiting spring (602).