Hydraulic oil cylinder with buffering function
By designing a buffer device in the hydraulic cylinder, the limiting shell, baffle, oil port, fan piston, connecting rod and spring are used to buffer the piston rod, which solves the problem of damage to the hydraulic cylinder due to collision and extends the service life of the equipment.
Patent Information
- Application Number
- CN202421352339.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The hydraulic cylinder is easily damaged by collision during the reciprocating movement of the piston rod.
A hydraulic oil cylinder with buffering function is designed, using buffering device one and buffering device two, and buffering device two is used to achieve buffering of the piston rod through components such as limiting shell, baffle, oil port, fan piston, connecting rod and spring.
Effectively slow down the movement speed under the piston rod, prevent collision with the cylinder base, and extend the service life of the hydraulic cylinder.
Smart Images
Figure CN222542770U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with a buffer function. Background Art
[0002] A hydraulic cylinder is a rod-shaped structure tool with its own telescopic function. It is usually used to lift and eject objects, change the installation position of objects, and be used in the height lifting structure of objects. It has the function of changing the position and positioning of objects.
[0003] The terminal speed of the piston rod is relatively high during the reciprocating motion. Under the action of inertia force and hydraulic pressure, it will collide with the bottom of the cylinder. Long-term collision can easily cause damage to the hydraulic cylinder. Utility Model Content
[0004] In order to solve the problem that the hydraulic cylinder is easily damaged due to the collision of the piston rod proposed in the above background technology, the utility model provides the following technical solutions:
[0005] A hydraulic cylinder with a buffering function comprises a cylinder body;
[0006] A piston rod is installed inside the cylinder body, a buffer device 1 is installed on the upper end of the cylinder body, and a buffer device 2 for cooperating with the buffer device 1 to buffer the piston rod is installed on the upper end of the buffer device 1.
[0007] The buffer device 1 includes a limit shell, and a first baffle and a second baffle are installed inside the limit shell for separating the middle part of the limit shell. The lower end of the first baffle is provided with an oil through hole 5 for oil circulation, and the upper end of the second baffle is provided with an oil through hole 6 for oil circulation.
[0008] The first baffle plate and the second baffle plate divide the middle portion of the limiting shell into a first oil chamber, a second oil chamber and a third oil chamber.
[0009] The second buffer device includes a sealing cover plate for closing the limit shell, a fan-shaped piston for squeezing the oil in the second oil chamber is installed at the lower end of the sealing cover plate, a connecting rod for cooperating with the piston rod to control the downward movement of the fan-shaped piston is installed at the upper end of the fan-shaped piston, and a spring for buffering is installed on the rod body of the connecting rod.
[0010] Furthermore, the cylinder body includes a cylinder barrel, a cylinder head 1 is installed at the lower end of the cylinder barrel, an oil port 1 is provided on one side of the cylinder head 1, and a cylinder head 2 is installed at the upper end of the cylinder barrel, an oil port 2 is provided on one side of the cylinder head 2.
[0011] Furthermore, an oil passage third for communicating with the oil passage second is formed at the upper end of the cylinder cover second, and the oil passage third is communicated with the first oil chamber.
[0012] Furthermore, an oil port four is installed at the upper end of the cylinder cover two for communicating with the upper end cavity of the cylinder barrel, and the oil port four is connected to the third oil chamber.
[0013] Furthermore, a connecting block is installed on the edge of the sealing cover plate, and a bolt for cooperating with the second cylinder head to fix the sealing cover plate to the upper end of the limiting shell is installed in the middle of the connecting block.
[0014] Furthermore, a connecting plate is installed on the upper end of the connecting rod.
[0015] Furthermore, the piston rod comprises a rod body, a piston 1 is mounted on the lower end of the rod body, and a fixed pressure plate for pushing the connecting plate downward is mounted on the upper end of the rod body.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] When piston 1 moves from the upper cavity of the cylinder to the lower cavity of the cylinder, oil flows into the cavity of the first oil chamber through oil ports 2 and 3, and oil flows into the cavity of the second oil chamber through oil port 5 at the lower end of the first baffle. When the fixed pressure plate and the connecting plate collide, the connecting plate cooperates with the bolts to drive the fan-shaped piston to move from the upper end of the cavity of the second oil chamber to the lower end of the cavity of the second oil chamber. The connecting plate squeezes the spring for preliminary buffering. When the fan-shaped piston moves from the upper end of the cavity of the second oil chamber to the lower end of the cavity of the second oil chamber, the second oil chamber gradually closes the oil port 6 on the upper end of the second baffle, reducing the oil port 6 through which oil can circulate, thereby slowing down the oil delivery, so that the speed at which the rod moves downward gradually slows down, thereby achieving the purpose of buffering and protecting the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a structural schematic diagram of the cylinder body of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the buffer device 1 of the utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the second buffer device of the utility model;
[0022] Figure 5 It is a structural schematic diagram of the piston rod of the utility model.
[0023] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:
[0024] 001-cylinder body;
[0025] 100-cylinder barrel, 110-cylinder head 1, 111-oil port 1, 120-cylinder head 2, 121-oil port 2, 122-oil port 3, 123-oil port 4;
[0026] 002-Buffer device 1;
[0027] 200-limiting housing, 210-first baffle, 211-oil port 5, 220-second baffle, 221-oil port 6, 230-first oil chamber, 240-second oil chamber, 250-third oil chamber;
[0028] 003-Buffer device 2;
[0029] 300-sealing cover plate, 310-connecting block, 311-bolt, 320-sector piston, 321-connecting rod, 322-connecting plate, 330-spring;
[0030] 004-piston rod;
[0031] 400-rod body, 410-piston 1, 420-fixed pressure plate. DETAILED DESCRIPTION
[0032] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.
[0033] See also Figure 1-Figure 5 The utility model provides a hydraulic cylinder with a buffering function, including a cylinder body 001, a buffer device 002, and a buffer device 002 and a buffer device 003 for buffering.
[0034] The cylinder body 001 includes a cylinder barrel 100, and a cylinder head 110 is fixedly installed at the lower end of the cylinder barrel 100. An oil port 111 is provided on one side of the cylinder head 110. When oil is injected into the lower end cavity of the cylinder barrel 100 through the oil port 111, the piston 410 is pushed upward, so that the fixed pressure plate 420 is away from the buffer device 1 002 and the buffer device 2 003.
[0035] A cylinder head 120 is fixedly installed at the upper end of the cylinder barrel 100, and an oil port 121 is provided on one side of the cylinder head 120. When oil is injected into the upper end cavity of the cylinder barrel 100 through the oil port 121, the piston 410 is pushed downward, so that the fixed pressure plate 420 approaches the buffer device 1 002 and the buffer device 2 003, and when the oil is injected into the upper end cavity of the cylinder barrel 100, the oil flows to the upper end cavity of the cylinder barrel 100 through the first oil chamber 230, the second oil chamber 240 and the third oil chamber 250.
[0036] The upper end of the second cylinder head 120 is provided with a third oil port 122 for communicating with the second oil port 121, and the third oil port 122 is in communication with the first oil chamber 230. The upper end of the second cylinder head 120 is provided with a fourth oil port 123 for communicating with the upper end cavity of the cylinder barrel 100, and the fourth oil port 123 is in communication with the third oil chamber 250. A column is also installed at the upper end of the second cylinder head 120, and a threaded hole is provided in the middle of the column, so that the bolt 311 cooperates with the threaded hole to fix the sealing cover plate 300 to the upper end of the limit shell 200.
[0037] A buffer device 002 is fixedly installed on the upper end of the cylinder body 001, and the buffer device 002 includes a limit shell 200. The limit shell 200 is composed of two arc plates and two side plates fixedly welded, and the limit shell 200 is fixedly installed on the upper end of the cylinder head 120. Two limit shells 200 are provided, which are symmetrically arranged on the upper end of the cylinder head 120.
[0038] The first baffle plate 210 and the second baffle plate 220 for separating the middle part of the limit shell 200 are fixedly installed inside the limit shell 200. The lower end of the first baffle plate 210 is provided with an oil through hole 5 211 for oil circulation, and the upper end of the second baffle plate 220 is provided with an oil through hole 6 221 for oil circulation.
[0039] The first baffle plate 210 and the second baffle plate 220 divide the middle part of the limit housing 200 into a first oil chamber 230, a second oil chamber 240 and a third oil chamber 250. The oil is transported to the first oil chamber 230 through the second oil port 121 and the third oil port 122, and then flows to the second oil chamber 240 through the fifth oil port 211. The oil in the second oil chamber 240 flows to the third oil chamber 250 through the sixth oil port 221, and then flows to the upper hole of the cylinder 100 through the fourth oil port 123, so that the oil squeezes the piston 1 410, driving the piston 1 410 to move from the upper cavity of the cylinder 100 to the lower cavity of the cylinder 100, so that the fixed pressure plate 420 approaches the connecting plate 322.
[0040] The upper end of the buffer device 1 002 is installed with a buffer device 2 003 for cooperating with the buffer device 1 002 to buffer the piston rod 004. The buffer device 2 003 includes a sealing cover plate 300 for sealing the limit housing 200 to prevent oil from flowing out of the first oil chamber 230, the second oil chamber 240 and the third oil chamber 250. A connecting block 310 is fixedly installed on the edge of the sealing cover plate 300, and a bolt 311 is installed in the middle of the connecting block 310 for cooperating with the cylinder head 2 120 to fix the sealing cover plate 300 to the upper end of the limit housing 200.
[0041] The lower end of the sealing cover plate 300 is installed with a sector piston 320 for squeezing the oil in the second oil chamber 240, and the upper end of the sector piston 320 is fixedly installed with a connecting rod 321 for cooperating with the piston rod 004 to control the downward movement of the sector piston 320, and the upper end of the connecting rod 321 is fixedly installed with a connecting plate 322 for contacting the fixed pressure plate 420. The rod body of the connecting rod 321 is installed with a spring 330 for buffering, and when the fixed pressure plate 420 pushes the connecting plate 322 downward, the spring 330 performs preliminary buffering.
[0042] A piston rod 004 is installed inside the cylinder body 001, and the piston rod 004 includes a rod body 400, a piston 410 is installed at the lower end of the rod body 400, and a fixed pressure plate 420 for pushing the connecting plate 322 downward is fixedly installed at the upper end of the rod body 400, and the fixed pressure plate 420 is located outside the cylinder barrel 100.
[0043] When the piston 1 410 moves from the upper cavity of the cylinder 100 to the lower cavity of the cylinder 100, the oil flows into the cavity of the first oil chamber 230 through the oil port 2 121 and the oil port 3 122, and the oil flows into the cavity of the second oil chamber 240 through the oil port 5 211 at the lower end of the first baffle 210. When the fixed pressure plate 420 and the connecting plate 322 collide with each other, the connecting plate 322 cooperates with the bolt 311 to drive the fan-shaped piston 320 from the upper end of the second oil chamber 240 to the second oil chamber 240. When the lower end of the cavity of the second oil chamber 240 moves, the connecting plate 322 squeezes the spring 330 to perform preliminary buffering. When the sector piston 320 moves from the upper end of the cavity of the second oil chamber 240 to the lower end of the cavity of the second oil chamber 240, the second oil chamber 240 gradually closes the oil opening 6 221 at the upper end of the second baffle 220, reducing the oil opening 6 221 through which oil can circulate, thereby slowing down the oil delivery, so that the speed at which the rod body 400 moves downward is gradually slowed down, thereby achieving the purpose of buffering.
[0044] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.
Claims
1. A hydraulic cylinder with a buffering function, comprising a cylinder body (001), characterized in that: A piston rod (004) is installed inside the cylinder body (001), a buffer device 1 (002) is installed at the upper end of the cylinder body (001), and a buffer device 2 (003) is installed at the upper end of the buffer device 1 (002) for cooperating with the buffer device 1 (002) to buffer the piston rod (004); The buffer device (002) comprises a limiting shell (200), a first baffle (210) and a second baffle (220) for separating the middle part of the limiting shell (200) are installed inside the limiting shell (200), an oil through hole (211) for oil supply and circulation is provided at the lower end of the first baffle (210), and an oil through hole (221) for oil supply and circulation is installed at the upper end of the second baffle (220); The first baffle (210) and the second baffle (220) divide the middle part of the limiting shell (200) into a first oil chamber (230), a second oil chamber (240) and a third oil chamber (250); The buffer device 2 (003) includes a sealing cover plate (300) for sealing the limit shell (200), the lower end of the sealing cover plate (300) is installed with a fan-shaped piston (320) for squeezing the oil in the second oil chamber (240), the upper end of the fan-shaped piston (320) is installed with a connecting rod (321) for cooperating with the piston rod (004) to control the downward movement of the fan-shaped piston (320), and the rod body of the connecting rod (321) is installed with a spring (330) for buffering.
2. The hydraulic cylinder with buffer function according to claim 1, characterized in that: The cylinder body (001) comprises a cylinder barrel (100), a cylinder head (110) being installed at the lower end of the cylinder barrel (100), an oil port (111) being provided on one side of the cylinder head (110), and a cylinder head (120) being installed at the upper end of the cylinder barrel (100), an oil port (121) being provided on one side of the cylinder head (120).
3. The hydraulic cylinder with buffer function according to claim 2, characterized in that: The upper end of the second cylinder cover (120) is provided with a third oil passage (122) for communicating with the second oil passage (121), and the third oil passage (122) is in communication with the first oil chamber (230).
4. The hydraulic cylinder with buffer function according to claim 2, characterized in that: The upper end of the cylinder cover 2 (120) is provided with an oil port 4 (123) for communicating with the upper end cavity of the cylinder barrel (100), and the oil port 4 (123) is connected to the third oil chamber (250).
5. The hydraulic cylinder with buffer function according to claim 2, characterized in that: A connecting block (310) is installed at the edge of the sealing cover plate (300), and a bolt (311) is installed in the middle of the connecting block (310) for cooperating with the second cylinder head (120) to fix the sealing cover plate (300) to the upper end of the limiting shell (200).
6. The hydraulic cylinder with buffer function according to claim 1, characterized in that: A connecting plate (322) is installed on the upper end of the connecting rod (321).
7. The hydraulic cylinder with buffer function according to claim 6, characterized in that: The piston rod (004) comprises a rod body (400), a piston 1 (410) is installed at the lower end of the rod body (400), and a fixed pressure plate (420) for pushing the connecting plate (322) downward is installed at the upper end of the rod body (400).