Oil cylinder for opening and closing valve

Abstract

The utility model belongs to the technical field of oil cylinders, and particularly relates to an oil cylinder for a valve switch, which comprises an oil cylinder body, a piston rod, a first oil pipe and a second oil pipe. A piston rod is slidably connected into the oil cylinder body, a first oil pipe is connected to one side of the oil cylinder body, and a second oil pipe is connected to the side, away from the upper portion of the first oil pipe, of the oil cylinder body. During use, the cushion cover is sleeved at the joint of the first oil pipe and the second oil pipe, then the lantern ring and the corrugated pipe are sleeved on the cushion cover, the fastening bolt is screwed for fixation, and when hydraulic oil passes through the first oil pipe and the second oil pipe, the corrugated pipe and the spring buffer bending force generated by impact, so that the bending amplitude is reduced, and the service life of the oil pipe is prolonged. The anti-bending effect is achieved; a wrench is used for rotating the adjusting bolt to drive the inserting block to be pulled out of the clamping groove, then the connecting rod slides to adjust the length, and the wrench is used for reversely rotating the adjusting bolt to fix the length of the connecting rod, so that the piston rod is prolonged when the length of the piston rod is not enough, and then the extension device can be extended.

Description

Technical Field

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

[0002] The oil cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). Some valves control the opening of the valve through the oil cylinder;

[0003] The oil pipes used in existing oil cylinders are usually hoses. When controlling the stroke of the oil cylinder, the pressure of the hydraulic oil will cause the oil pipes to vibrate. The vibration amplitude is the largest at the position connected to the oil cylinder. Continuous bending of the pipes can easily cause the pipes to rupture. In addition, the piston rods of existing oil cylinders are usually fixed structures. When the stroke of the oil cylinder is sufficient but the installation distance is insufficient, it can only be connected by adding rods or blocks and cannot be extended. Summary of the invention

[0004] The purpose of the utility model is to provide a valve switch 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 switch oil cylinder, comprising an oil cylinder body, a piston rod, a first oil pipe and a second oil pipe;

[0006] A piston rod is slidably connected in the oil cylinder body, a first oil pipe is connected to one side of the oil cylinder body, and a second oil pipe is connected to one side of the oil cylinder body away from the first oil pipe;

[0007] The outer sides of the first oil pipe and the second oil pipe are both provided with anti-bending mechanisms, and the end of the piston rod is provided with an extending mechanism.

[0008] Preferably, the anti-bending mechanism includes a sleeve, a bellows, a ring, a spring, a storage chamber, a pressure plate and a fastening bolt, the outer sides of the first oil pipe and the second oil pipe are both sleeved with sleeves, and the outer sides of the sleeves are sleeved with bellows.

[0009] Preferably, a collar is connected to one side of the corrugated pipe, and the collar is sleeved on the outside of the gasket;

[0010] A spring is sleeved on the outer side of the bellows, and the spring abuts against one side of the collar.

[0011] Preferably, a receiving cavity is opened on the inner wall of the sleeve, a pressure plate is slidably connected in the receiving cavity, the pressure plate abuts against the outer side of the cushion sleeve, and the other end of the pressure plate is rotatably connected to a fastening bolt, and the fastening bolt is threadedly connected in the inner wall of the receiving cavity.

[0012] Preferably, the collar, the receiving cavity, the pressure plate and the fastening bolts are symmetrically arranged in two groups with respect to the central axis of the bellows.

[0013] Preferably, the extension mechanism comprises an empty slot, a connecting rod, a limiting slot, a limiting rod, a sliding slot, a clamping slot, an insert block and an adjusting bolt, and an empty slot is provided at the end of the piston rod, and a connecting rod is slidably connected in the empty slot.

[0014] Preferably, a limiting groove is provided in the connecting rod, a limiting rod is slidably connected in the limiting groove, and the limiting rod is connected to the inner wall of the empty groove.

[0015] Preferably, a slide groove is provided on one side of the empty groove, a clamping groove is provided on one side of the connecting rod, an insert block is clamped in the clamping groove, the insert block is slidably connected in the slide groove, and an adjusting bolt is rotatably connected to one side of the insert block, and the adjusting bolt is threadedly connected in the inner wall of the slide groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. When the utility model is used, the washer is sleeved at the connection between the first oil pipe and the second oil pipe, and then the sleeve ring and the bellows are sleeved on the washer, and the fastening bolts are tightened to drive the pressure plate to slide in the storage cavity, squeeze the washer, and fix the sleeve ring and the bellows at the connection between the first oil pipe and the second oil pipe. When hydraulic oil passes through the first oil pipe and the second oil pipe, the impact force drives the first oil pipe and the second oil pipe to vibrate and bend. The bellows and the spring can buffer the bending force and reduce the bending amplitude, so as to prevent the first oil pipe and the second oil pipe from being damaged due to vibration caused by the impact force of the hydraulic oil, thereby playing an anti-bending role;

[0018] 2. Use a wrench to rotate the adjusting bolt to drive the insert block to be pulled out of the slot and put into the slide slot, then slide the connecting rod to adjust the length of the connecting rod from the deep inside the empty slot, and use a wrench to rotate the adjusting bolt in the opposite direction to insert the insert block into the nearby slot to fix the length of the connecting rod. When the length of the piston rod is not enough, the length of the connecting rod can be adjusted without the need to lengthen the installation rod or block, so that the utility model can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 This is a front view structural diagram of the empty slot of the utility model;

[0021] Figure 2This is a front view structural diagram of the pressing plate of the utility model;

[0022] Figure 3 This is a front view structural schematic diagram of the utility model;

[0023] Figure 4 It is an enlarged structural schematic diagram of point A of the utility model.

[0024] In the figure: 1. Cylinder body; 2. Piston rod; 3. First oil pipe; 4. Second oil pipe; 5. Anti-bending mechanism; 501. Bushing; 502. Bellows; 503. Ring; 504. Spring; 505. Storage chamber; 506. Pressure plate; 507. Fastening bolt; 6. Extension mechanism; 601. Empty slot; 602. Connecting rod; 603. Limiting slot; 604. Limiting rod; 605. Slide slot; 606. Slot; 607. Insert block; 608. Adjusting bolt. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-Figure 3 , the utility model provides a technical solution: a valve switch oil cylinder, comprising an oil cylinder body 1, a piston rod 2, a first oil pipe 3 and a second oil pipe 4;

[0027] A piston rod 2 is slidably connected in the oil cylinder body 1, a first oil pipe 3 is connected to one side of the oil cylinder body 1, and a second oil pipe 4 is connected to the side of the oil cylinder body 1 away from the first oil pipe 3;

[0028] The outer sides of the first oil pipe 3 and the second oil pipe 4 are both provided with anti-bending mechanisms 5 , and the end of the piston rod 2 is provided with an extending mechanism 6 .

[0029] The anti-bending mechanism 5 includes a sleeve 501, a bellows 502, a collar 503, a spring 504, a receiving chamber 505, a pressure plate 506 and a fastening bolt 507. The first oil pipe 3 and the second oil pipe 4 are both sleeved with the sleeve 501, and the sleeve 501 can be made of sponge material. The outer side of the sleeve 501 is sleeved with the bellows 502, and the one side of the bellows 502 is connected to the collar 503, and the collar 503 is sleeved on the outer side of the sleeve 501; the outer side of the bellows 502 is sleeved with the spring 504, and the spring 504 abuts against one side of the collar 503, a receiving chamber 505 is opened on the inner wall of the collar 503, a pressure plate 506 is slidably connected in the receiving chamber 505, the pressure plate 506 abuts against the outer side of the cushion sleeve 501, and the other end of the pressure plate 506 is rotatably connected with a fastening bolt 507, the fastening bolt 507 is threadedly connected in the inner wall of the receiving chamber 505, and the collar 503, the receiving chamber 505, the pressure plate 506 and the fastening bolt 507 are symmetrically arranged in two groups relative to the central axis of the bellows 502.

[0030] In the specific implementation, the sleeve 501 is sleeved on the connection between the first oil pipe 3 and the second oil pipe 4 to prevent the external bellows 502 and the pressure plate 506 from being worn by the first oil pipe 3 and the second oil pipe 4, and then the collar 503 and the bellows 502 are sleeved on the sleeve 501, so that the sleeve 501, the collar 503 and the bellows 502 can slide freely on the first oil pipe 3 and the second oil pipe 4, slide to the bending part, tighten the fastening bolt 507, and drive the pressure plate 506 to the receiving chamber 50 5, squeeze the cushion sleeve 501, fix the collar 503 and the bellows 502 at the connection between the first oil pipe 3 and the second oil pipe 4. When hydraulic oil passes through the first oil pipe 3 and the second oil pipe 4, the impact force drives the first oil pipe 3 and the second oil pipe 4 to vibrate, and bend at the interface. The bellows 502 and the spring 504 can buffer the bending force, reduce the bending amplitude, and prevent the first oil pipe 3 and the second oil pipe 4 from being damaged by continuous bending due to the impact force of the hydraulic oil.

[0031] See also Figure 1 , Figure 3 and Figure 4 It can be seen that the extension mechanism 6 includes an empty slot 601, a connecting rod 602, a limiting slot 603, a limiting rod 604, a sliding slot 605, a clamping slot 606, an insert block 607 and an adjusting bolt 608. An empty slot 601 is provided at the end of the piston rod 2, and a connecting rod 602 is slidably connected in the empty slot 601. A limiting slot 603 is provided in the connecting rod 602, and a limiting rod 604 is slidably connected in the limiting slot 603. The limiting rod 604 is connected to the inner wall of the empty slot 601. A sliding slot 605 is provided on one side of the empty slot 601, and a clamping slot 606 is provided on one side of the connecting rod 602. An insert block 607 is clamped in the clamping slot 606, and the insert block 607 is slidably connected in the sliding slot 605. An adjusting bolt 608 is rotatably connected to one side of the insert block 607, and the adjusting bolt 608 is threadedly connected in the inner wall of the sliding slot 605.

[0032] During specific implementation, a wrench is used to rotate the adjusting bolt 608 to drive the insert block 607 to be pulled out of the slot 606 and retracted into the slide slot 605, thereby releasing the limit on the connecting rod 602, and then sliding the connecting rod 602. At this time, the limit rod 604 slides in the limit slot 603 to limit the connecting rod 602 to prevent it from falling off, and adjust the length of the connecting rod 602 from the deep inside the empty slot 601, and use a wrench to rotate the adjusting bolt 608 in the opposite direction, insert the insert block 607 into the nearby slot 606, and fix the length of the connecting rod 602. When the stroke of the piston rod 2 is sufficient, but the installation position is far away and the length is insufficient, the length of the connecting rod 602 can be adjusted, so that the utility model can be extended.

[0033] To sum up: when the utility model is used, first install the tooth plate of the utility model and the valve. If the connecting rod 602 cannot reach the tooth plate, adjust the length of the connecting rod 602, sleeve the gasket 501 on the first oil pipe 3 and the second oil pipe 4, then sleeve the bellows 502 and the collar 503 on the gasket 501, fix the first oil pipe 3 and the second oil pipe 4 to the cylinder body 1, make the gasket 501, the bellows 502 and the collar 503 slide to the bending place of the first oil pipe 3 and the second oil pipe 4, rotate the fastening bolt 507 to fix it, reduce the amplitude of the impact force bending, the oil pump transports the hydraulic oil from the first oil pipe 3 into the cylinder body 1, pushes the piston rod 2 to slide outward, drives the tooth plate in the valve to drive the gear to rotate, and the gear drives the sealing plate in the valve to rotate and open. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0034] 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. 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 opening and closing oil cylinder, comprising an oil cylinder body (1), a piston rod (2), a first oil pipe (3) and a second oil pipe (4), characterized in that ； A piston rod (2) is slidably connected inside the oil cylinder body (1); a first oil pipe (3) is connected to one side of the oil cylinder body (1); and a second oil pipe (4) is connected to the side of the oil cylinder body (1) away from the first oil pipe (3); The outer sides of the first oil pipe (3) and the second oil pipe (4) are both provided with anti-bending mechanisms (5), and the end of the piston rod (2) is provided with an extension mechanism (6).

2. The valve switch oil cylinder according to claim 1, characterized in that: The anti-bending mechanism (5) comprises a bushing (501), a bellows (502), a collar (503), a spring (504), a storage chamber (505), a pressure plate (506) and a fastening bolt (507); the outer sides of the first oil pipe (3) and the second oil pipe (4) are both sleeved with bushings (501); and the outer sides of the bushings (501) are sleeved with the bellows (502).

3. The valve switch oil cylinder according to claim 2, characterized in that: A collar (503) is connected to one side of the bellows (502), and the collar (503) is sleeved on the outside of the gasket (501); A spring (504) is sleeved on the outer side of the bellows (502), and the spring (504) abuts against one side of the collar (503).

4. The valve switch oil cylinder according to claim 3, characterized in that: A receiving cavity (505) is provided on the inner wall of the sleeve (503), a pressure plate (506) is slidably connected in the receiving cavity (505), the pressure plate (506) abuts against the outer side of the cushion sleeve (501), and a fastening bolt (507) is rotatably connected to the other end of the pressure plate (506), and the fastening bolt (507) is threadedly connected in the inner wall of the receiving cavity (505).

5. The valve switch oil cylinder according to claim 4, characterized in that: The collar (503), the receiving chamber (505), the pressure plate (506) and the fastening bolts (507) are symmetrically arranged in two groups relative to the central axis of the bellows (502).

6. The valve switch oil cylinder according to claim 1, characterized in that: The extending mechanism (6) comprises an empty slot (601), a connecting rod (602), a limiting slot (603), a limiting rod (604), a sliding slot (605), a clamping slot (606), an insert block (607) and an adjusting bolt (608); an empty slot (601) is provided at the end of the piston rod (2), and a connecting rod (602) is slidably connected in the empty slot (601).

7. The valve opening and closing oil cylinder according to claim 6, characterized in that: A limiting groove (603) is provided in the connecting rod (602), a limiting rod (604) is slidably connected in the limiting groove (603), and the limiting rod (604) is connected to the inner wall of the empty groove (601).

8. The valve opening and closing oil cylinder according to claim 6, characterized in that: A sliding groove (605) is provided on one side of the empty groove (601), and a clamping groove (606) is provided on one side of the connecting rod (602). An insert block (607) is clamped in the clamping groove (606). The insert block (607) is slidably connected in the sliding groove (605), and an adjusting bolt (608) is rotatably connected to one side of the insert block (607). The adjusting bolt (608) is threadedly connected to the inner wall of the sliding groove (605).

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