Oil cylinder for valve

Abstract

The utility model belongs to the technical field of oil cylinders, and particularly relates to an oil cylinder for a valve, which comprises an oil cylinder body, flange plates, a piston rod and a piston, the flange plates are arranged at two ends of the oil cylinder body, the piston rod extending to the outer side is arranged in the oil cylinder body, one end of the piston rod is connected with the piston, and oil channels are arranged in the flange plates. And a filter screen is arranged in the flange plate. A buffering mechanism is arranged in the oil cylinder body, and a first spring is welded to one side in the oil cylinder body. A piston rod moves to drive a piston to move, so that the piston can push a second buffer plate and a moving block to move and drive a moving rod to move, and meanwhile, the moving rod drives a first buffer plate to extrude a first spring; and the piston rod in the oil cylinder body is prevented from colliding with the flange plates on the two sides of the oil cylinder body during reciprocating motion, so that the oil cylinder body is safer during use.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil cylinders, in particular to an oil cylinder for a valve. Background Art

[0002] The oil cylinder is a hydraulic cylinder. The hydraulic cylinder is a linear motion actuator whose output force is proportional to the effective area of ​​the piston and the pressure difference on both sides. Its function is to convert hydraulic energy into mechanical energy. The input of the hydraulic cylinder is the flow rate and pressure of the fluid, and the output is the linear motion speed and force. The piston of the hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited. Oil cylinders are often used on valves.

[0003] When the existing valve cylinder is in use, the piston needs to reciprocate inside the cylinder, so the piston is likely to hit the connecting flanges on both sides of the cylinder when moving. After a period of use, the connecting flanges are likely to loosen, causing leakage when the cylinder continues to be used, thus affecting normal use. Summary of the invention

[0004] The purpose of the utility model is to provide a valve oil cylinder to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve oil cylinder, comprising an oil cylinder body, a flange, a piston rod and a piston body;

[0006] Flanges are provided at both ends of the oil cylinder body, a piston rod extending to the outside is provided inside the oil cylinder body, one end of the piston rod is connected to the piston body, an oil passage is opened inside the flange, and a filter is provided inside the flange.

[0007] Preferably, a buffer mechanism is provided inside the cylinder body, and the buffer mechanism includes a first spring, a first buffer plate, a moving rod, a moving block, a sliding rod, a second buffer plate, a third buffer plate and a second spring. A first spring is welded on one side of the interior of the cylinder body, one end of the first spring is connected to the first buffer plate, a moving rod is provided on one side of the first buffer plate, one end of the moving rod is connected to the moving block, a sliding rod is connected through the interior of the moving block, and a second buffer plate is provided on one end of the sliding rod.

[0008] Preferably, a third buffer plate is provided on a side of the oil cylinder body away from the second buffer plate, and a second spring is welded between the third buffer plate and the oil cylinder body.

[0009] Preferably, a locking mechanism is provided inside the flange, and the locking mechanism includes a cavity, a locking rod, a limit plate, a third spring, an empty groove, a pull wire and a locking groove. A cavity is opened on one side of the flange close to the oil channel, and a locking rod is provided inside the cavity.

[0010] Preferably, a limiting plate is sleeved on the outer side of the locking rod, and a third spring is welded between the limiting plate and the cavity.

[0011] Preferably, a slot is provided on one side of the cavity, lifting blocks are movably connected to both ends of the flange, and a pull wire is provided between the lifting block and the limiting plate and passes through the slot.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the utility model is used, the piston rod moves to drive the piston body to move, thereby pushing the second buffer plate to move, and the second buffer plate drives the moving block to move, thereby driving the moving rod to move. At the same time, the moving rod drives the first buffer plate to squeeze the first spring when moving, which can prevent the piston rod inside the oil cylinder body from colliding with the flanges on both sides of the oil cylinder body when performing reciprocating motion, thereby making the oil cylinder body safer when in use;

[0014] 2. The utility model drives the limit plate to move by pulling the pull wire, thereby squeezing the third spring connected to one side. At the same time, the limit plate drives the locking rod to move when moving, so that the locking rod can be separated from the locking groove; conversely, the locking rod and the locking groove can be locked by the resetting effect of the third spring, and the locking rod can be locked with the filter screen, so that the filter screen can be installed inside the oil channel, so that the cylinder body can filter the bubbles or impurities generated during oil filling through the filter screen when in use, which is convenient for the use of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model in a front view;

[0018] Figure 3 It is a side cross-sectional enlarged structural schematic diagram of the buffer mechanism of the utility model;

[0019] Figure 4 It is a front view enlarged cross-sectional structural schematic diagram of the engaging mechanism of the utility model.

[0020] In the figure: 1. Cylinder body; 2. Flange; 3. Piston rod; 4. Piston body; 5. Oil channel; 6. Filter; 7. Buffer mechanism; 701. First spring; 702. First buffer plate; 703. Moving rod; 704. Moving block; 705. Sliding rod; 706. Second buffer plate; 707. Third buffer plate; 708. Second spring; 8. Engaging mechanism; 801. Cavity; 802. Locking rod; 803. Limiting plate; 804. Third spring; 805. Empty slot; 806. Pull wire; 807. Locking slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 3 It can be seen that the utility model provides a technical solution: a valve oil cylinder, comprising an oil cylinder body 1, a flange 2, a piston rod 3 and a piston body 4;

[0023] Flanges 2 are provided at both ends of the cylinder body 1, a piston rod 3 extending to the outside is provided inside the cylinder body 1, one end of the piston rod 3 is connected to the piston body 4, an oil passage 5 is provided inside the flange 2, a filter screen 6 is provided inside the flange 2, a buffer mechanism 7 is provided inside the cylinder body 1, and the buffer mechanism 7 includes a first spring 701, a first buffer plate 702, a moving rod 703, a moving block 704, a sliding rod 705, a second buffer plate 706, a third buffer plate 707 and a second spring 708, and the cylinder body 1 A first spring 701 is welded on one side of the interior, one end of the first spring 701 is connected to a first buffer plate 702, a moving rod 703 is provided on one side of the first buffer plate 702, one end of the moving rod 703 is connected to a moving block 704, a sliding rod 705 is connected to the interior of the moving block 704, a second buffer plate 706 is provided on one end of the sliding rod 705, a third buffer plate 707 is provided on the side of the cylinder body 1 away from the second buffer plate 706, and a second spring 708 is welded between the third buffer plate 707 and the cylinder body 1.

[0024] See also Figures 1 to 3 It can be seen that by moving the piston rod 3 to drive the piston body 4 to move, the second buffer plate 706 and the first buffer plate 702 are pushed to move and then squeeze the first spring 701, so that the piston rod 3 inside the cylinder body 1 can prevent the flange 2 on both sides of the cylinder body 1 from colliding during reciprocating motion, thereby making the cylinder body 1 safer when in use.

[0025] See also Figure 1 and Figure 4 It can be seen that a locking mechanism 8 is provided inside the flange 2, and the locking mechanism 8 includes a cavity 801, a locking rod 802, a limit plate 803, a third spring 804, a slot 805, a pull wire 806 and a locking slot 807. A cavity 801 is provided on the side of the flange 2 close to the oil channel 5, and a locking rod 802 is provided inside the cavity 801. A limit plate 803 is sleeved on the outer side of the locking rod 802, and a third spring 804 is welded between the limit plate 803 and the cavity 801. A slot 805 is provided on one side of the cavity 801. Lifting blocks are movably connected at both ends of the flange 2, and a pull wire 806 is provided between the lifting block and the limit plate 803 and passes through the slot 805.

[0026] See also Figure 1 and Figure 4 It can be seen that by pulling the pull wire 806, the locking rod 802 can be separated from the locking groove 807; conversely, through the reset effect of the third spring 804, the filter 6 can be installed inside the oil channel 5, so that the cylinder body 1 can filter the bubbles or impurities generated during oil filling through the filter 6 when in use.

[0027] To sum up, when the utility model is used, the piston rod 3 is moved to drive the piston body 4 to move, thereby pushing the second buffer plate 706 to move, and the second buffer plate 706 drives the moving block 704 to move, thereby driving the moving rod 703 to move, and at the same time drives the first buffer plate 702 to squeeze the first spring 701, so that the piston rod 3 inside the cylinder body 1 can prevent the collision with the flanges 2 on both sides of the cylinder body 1 during reciprocating motion, thereby making the cylinder body 1 safer when in use. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve oil cylinder, comprising an oil cylinder body (1), a flange (2), a piston rod (3) and a piston body (4), characterized in that: Flanges (2) are provided at both ends of the oil cylinder body (1); a piston rod (3) extending to the outside is provided inside the oil cylinder body (1); one end of the piston rod (3) is connected to the piston body (4); an oil passage (5) is provided inside the flange (2); and a filter screen (6) is provided inside the flange (2); A buffer mechanism (7) is arranged inside the oil cylinder body (1), and the buffer mechanism (7) comprises a first spring (701), a first buffer plate (702), a moving rod (703), a moving block (704), a sliding rod (705), a second buffer plate (706), a third buffer plate (707) and a second spring (708). A first spring (701) is welded to one side of the oil cylinder body (1), one end of the first spring (701) is connected to the first buffer plate (702), a moving rod (703) is arranged on one side of the first buffer plate (702), one end of the moving rod (703) is connected to the moving block (704), a sliding rod (705) is connected to the inside of the moving block (704), and a second buffer plate (706) is arranged at one end of the sliding rod (705).

2. A valve oil cylinder according to claim 1, characterized in that: A third buffer plate (707) is provided on a side of the oil cylinder body (1) away from the second buffer plate (706), and a second spring (708) is welded between the third buffer plate (707) and the oil cylinder body (1).

3. The valve oil cylinder according to claim 1, characterized in that: A locking mechanism (8) is arranged inside the flange (2), and the locking mechanism (8) comprises a cavity (801), a locking rod (802), a limit plate (803), a third spring (804), an empty groove (805), a pull wire (806) and a locking groove (807). A cavity (801) is opened on one side of the flange (2) close to the oil passage (5), and a locking rod (802) is arranged inside the cavity (801).

4. The valve oil cylinder according to claim 3, characterized in that: A limiting plate (803) is sleeved on the outer side of the locking rod (802), and a third spring (804) is welded between the limiting plate (803) and the cavity (801).

5. The valve oil cylinder according to claim 4, characterized in that: A hollow groove (805) is provided on one side of the cavity (801), and lifting blocks are movably connected to both ends of the flange (2). A pulling wire (806) passing through the hollow groove (805) is provided between the lifting block and the limiting plate (803).

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