Buffering hydraulic cylinder

Abstract

The utility model discloses a buffering hydraulic cylinder, and relates to the technical field of hydraulic cylinders. A piston rod is arranged in the cylinder body in a sliding fit mode, a piston is arranged at one end, located in the cylinder body, of the piston rod, a buffer spring is arranged in the cylinder body, one end, close to the piston, of the buffer spring is fixedly connected with the piston, two oil inlets are formed in the cylinder body, and a buffer device is arranged at the bottom of the inner wall of the cylinder body. When the piston makes contact with the buffer plate, the impact force of the piston on the buffer plate is reduced, meanwhile, the first sliding block moves on the surface of the first sliding rod, under the action of the first spring, the impact force of the piston on the buffer plate is further reduced, the impact force of the piston on the cylinder body can be reduced by arranging the buffer spring, and the service life of the cylinder body is prolonged. Therefore, the problem of hydraulic oil leakage caused by loosening of the cylinder head or the cylinder bottom due to impact of the piston on the cylinder body is solved, and normal use of the hydraulic cylinder is not affected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of hydraulic cylinders, and particularly relates to a buffer hydraulic cylinder. BACKGROUND

[0002] Hydraulic cylinders are hydraulic execution elements that convert hydraulic energy into mechanical energy and perform linear reciprocating motion (or swinging motion), and are simple in structure and reliable in operation, so that when they are used to realize reciprocating motion, a speed reducer can be omitted, and there is no transmission gap, and the motion is stable, so that they are widely used in the hydraulic systems of various machines.

[0003] When the piston in the hydraulic cylinder moves under the push of hydraulic oil, it often collides with the cylinder head or the cylinder bottom or is tightly attached to the cylinder head or the cylinder bottom, the collision is easy to cause the cylinder head or the cylinder bottom to be loose, and further cause the hydraulic oil to leak, thereby affecting the normal use of the hydraulic cylinder, and the tight attachment is easy to cause the working area to be insufficient, thereby affecting the start of the hydraulic cylinder, and the Chinese patent with the publication number CN219509937U discloses a hydraulic cylinder buffer mechanism, which proves the objective existence of the above-mentioned defects.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem that the cylinder head or the cylinder bottom is often collided or tightly attached in the prior art, the collision is easy to cause the cylinder head or the cylinder bottom to be loose, and further cause the hydraulic oil to leak, thereby affecting the normal use of the hydraulic cylinder.

[0006] To solve the above-mentioned technical problem, the basic idea of the technical scheme of the utility model is as follows:

[0007] A buffer hydraulic cylinder, comprising: a cylinder body, a piston rod is slidably fitted in the inside of the cylinder body, a piston is arranged at one end of the piston rod in the inside of the cylinder body, a buffer spring is arranged in the inside of the cylinder body, one end of the buffer spring close to the piston is fixedly connected with the piston, two oil inlets are arranged in the inside of the cylinder body, and a buffer device is arranged at the bottom of the inner wall of the cylinder body.

[0008] Optionally, the buffer device comprises a buffer plate, the buffer plate is slidably fitted in the inside of the cylinder body, two sliding grooves are arranged in the inside of the cylinder body, a sliding rod one is arranged in the inside of the sliding groove, a sliding block one is slidably fitted on the surface of the sliding rod one, a baffle one is slidably fitted on the surface of the sliding rod one, the baffle one is in contact with the sliding block one, and a spring one is arranged in the inside of the sliding groove, one end of the spring one close to the baffle one is fixedly connected with the baffle one.

[0009] Optionally, two moving grooves are arranged in the interior of the buffer plate, a sliding rod two is arranged in the interior of the moving grooves, two baffle plates two are slidably connected to the surface of the sliding rod two, one of the baffle plates two is in contact with a sliding block two, a sliding block three is slidably connected to the surface of the sliding rod two, and the other baffle plate two is in contact with the sliding block three.

[0010] Optionally, a support rod is rotatably connected to the interior of the sliding block two at one end of the buffer plate, a buffer rod is rotatably connected between the sliding block three and the sliding block one, and the buffer rod is rotatably connected to the support rod.

[0011] Optionally, two springs two are arranged in the interior of the moving grooves, one end of the springs two close to the baffle plates two is fixedly connected to the baffle plates two, and a spring three is arranged between the sliding block two and the sliding block three.

[0012] Optionally, a telescopic cylinder is arranged in the interior of the cylinder body, a telescopic rod is slidably connected to the interior of the telescopic cylinder, a pad is arranged at the bottom of the buffer plate, and one end of the telescopic rod is fixedly connected to the pad.

[0013] Optionally, a moving block is slidably connected to the interior of the telescopic cylinder, and one end of the telescopic rod inside the telescopic cylinder is fixedly connected to the moving block.

[0014] Optionally, a spring four is arranged in the interior of the telescopic cylinder, a spring five is arranged in the interior of the telescopic cylinder, one end of the springs four and the spring five close to the moving block is fixedly connected to the moving block, and the spring four is sleeved on the surface outside the telescopic rod.

[0015] After the technical scheme is adopted, the present application has the following advantages compared with the prior art.

[0016] When the piston contacts the buffer plate, the buffer plate moves downward, so that the sliding block two and the sliding block three move to the two ends of the sliding rod two, and under the action of the springs two and the spring three, the sliding block two and the sliding block three can be buffered, so as to reduce the impact force of the piston on the buffer plate, and the sliding block one moves on the surface of the sliding rod one, and under the action of the spring one, the impact force of the piston on the buffer plate is further reduced, so as to reduce the impact of the piston on the cylinder body, thereby reducing the loosening of the cylinder head or the cylinder bottom caused by the impact of the piston on the cylinder body, and further reducing the problem of hydraulic oil leakage, so as to not affect the normal use of the hydraulic cylinder.

[0017] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0019] Figure 1 It is a schematic diagram of the cylinder body structure of the buffer hydraulic cylinder of the utility model;

[0020] Figure 2 It is a schematic diagram of the cylinder body part of the buffer hydraulic cylinder of the utility model.

[0021] Figure 3 It is a schematic diagram of the cylinder body part of the buffer hydraulic cylinder of the utility model.

[0022] Figure 4 It is a schematic diagram of the telescopic rod part of the buffer hydraulic cylinder of the utility model.

[0023] In the drawings, the component list represented by each number is as follows:

[0024] 1, cylinder body; 101, piston rod; 102, oil inlet; 103, piston; 104, buffer spring; 2, buffer plate; 201, buffer rod; 202, support rod; 203, sliding block one; 204, sliding rod one; 205, baffle one; 206, spring one; 207, sliding groove; 3, sliding block two; 301, baffle two; 302, spring two; 4, sliding block three; 5, sliding rod two; 501, moving groove; 502, spring three; 6, telescopic rod; 601, telescopic cylinder; 602, moving block; 603, spring four; 604, spring five; 605, cushion block.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] The utility model will be further described in detail in combination with the drawings.

[0027] Please refer to Figures 1-4 As shown in the drawings, a buffer hydraulic cylinder is provided in the embodiment, which comprises a cylinder body 1, the inside of the cylinder body 1 is slidably fitted with a piston rod 101, one end of the piston rod 101 inside the cylinder body 1 is provided with a piston 103, the inside of the cylinder body 1 is provided with a buffer spring 104, one end of the buffer spring 104 close to the piston 103 is fixedly connected with the piston 103, two oil inlets 102 are formed in the inside of the cylinder body 1, and a buffer device is arranged on the bottom of the inner wall of the cylinder body 1.

[0028] The application of one aspect of the embodiment is: when the piston 103 impacts the buffer plate 2 downward, when the piston 103 contacts the buffer plate 2, the buffer plate 2 moves downward, so that the sliding block two 3 and the sliding block three 4 move to the two ends of the sliding rod two 5, under the action of the spring two 302 and the spring three 502, the sliding block two 3 and the sliding block three 4 can be buffered, the impact force of the piston 103 on the buffer plate 2 is reduced, at the same time, the sliding block one 203 moves on the surface of the sliding rod one 204, under the action of the spring one 206, the impact force of the piston 103 on the buffer plate 2 is further reduced, so that the impact on the bottom of the cylinder 1 can be reduced, by arranging the buffer spring 104, the impact of the piston 103 on the top of the cylinder 1 can be reduced, at the same time, the buffer plate 2 moves downward, so that the telescopic rod 6 moves downward, under the action of the spring four 603 and the spring five 604, the impact of the piston 103 on the buffer plate 2 is reduced again, so that the bottom of the cylinder 1 can be protected.

[0029] The buffer device of the embodiment comprises a buffer plate 2, the buffer plate 2 is slidably connected in the cylinder 1, two sliding grooves 207 are arranged in the cylinder 1, a sliding rod one 204 is arranged in the sliding groove 207, a sliding block one 203 is slidably connected on the surface of the sliding rod one 204, a baffle one 205 is slidably connected on the surface of the sliding rod one 204, the baffle one 205 contacts the sliding block one 203, a spring one 206 is arranged in the sliding groove 207, one end of the spring one 206 close to the baffle one 205 is fixedly connected with the baffle one 205. When the piston 103 contacts the buffer plate 2, the buffer plate 2 moves downward, so that the sliding block two 3 and the sliding block three 4 move to the two ends of the sliding rod two 5, under the action of the spring two 302 and the spring three 502, the sliding block two 3 and the sliding block three 4 can be buffered, the impact force of the piston 103 on the buffer plate 2 is reduced, at the same time, the sliding block one 203 moves on the surface of the sliding rod one 204, under the action of the spring one 206, the impact force of the piston 103 on the buffer plate 2 is further reduced.

[0030] The cylinder 1 of the embodiment is internally provided with a telescopic cylinder 601, the telescopic rod 6 is slidably connected in the telescopic cylinder 601, the bottom of the buffer plate 2 is provided with a pad 605, one end of the telescopic rod 6 is fixedly connected with the pad 605. The buffer plate 2 moves downward, so that the telescopic rod 6 moves downward.

[0031] The telescopic cylinder 601 of the embodiment is internally provided with a spring four 603, the telescopic cylinder 601 is internally provided with a spring five 604, one end of the spring four 603 and the spring five 604 close to the moving block 602 is fixedly connected with the moving block 602, the spring four 603 is sleeved on the surface outside the telescopic rod 6. Under the action of the spring four 603 and the spring five 604, the impact of the piston 103 on the buffer plate 2 is reduced again, so that the bottom of the cylinder 1 can be protected.

[0032] The utility model is not limited to the above-mentioned embodiment, any person should know the structure change made under the enlightenment of the utility model, any technical scheme with the same or similar utility model falls into the protection scope of the utility model. The utility model is not described in detail the technology, shape, structure part is the known technology.

Claims

1. A cushioned hydraulic cylinder characterized by, Include: The cylinder (1), the piston rod (101) is slidably fitted in the cylinder (1), the piston rod (101) is provided with a piston (103) at one end in the cylinder (1), the cylinder (1) is provided with a buffer spring (104), the buffer spring (104) is fixedly connected with the piston (103) at one end close to the piston (103), the cylinder (1) is provided with two oil inlets (102), the bottom of the inner wall of the cylinder (1) is provided with a buffer device.

2. A cushioned hydraulic cylinder according to claim 1, wherein, The buffer device includes a buffer plate (2), the buffer plate (2) is slidably fitted in the cylinder (1), the cylinder (1) is provided with two sliding grooves (207), the sliding groove (207) is provided with a sliding rod (204), the surface of the sliding rod (204) is slidably fitted with a sliding block (203), the surface of the sliding rod (204) is slidably fitted with a baffle (205), the baffle (205) is in contact with the sliding block (203), the sliding groove (207) is provided with a spring (206), the spring (206) is fixedly connected with the baffle (205) at one end close to the baffle (205).

3. A cushioned hydraulic cylinder as claimed in claim 2, wherein, The inside of the buffer plate (2) is provided with two moving grooves (501), the moving groove (501) is provided with a sliding rod (5), the surface of the sliding rod (5) is slidably fitted with two baffles (301), the surface of the sliding rod (5) is slidably fitted with a sliding block (3), one of the baffles (301) is in contact with the sliding block (3), the surface of the sliding rod (5) is slidably fitted with a sliding block (4), the other baffle (301) is in contact with the sliding block (3).

4. A cushioned hydraulic cylinder as claimed in claim 2, wherein, The sliding block (3) is rotatably fitted with a support rod (202) at one end outside the buffer plate (2), the sliding block (3) and the sliding block (203) are rotatably fitted with a buffer rod (201), the buffer rod (201) is rotatably fitted with the support rod (202).

5. A cushioned hydraulic cylinder as claimed in claim 2, wherein, The inside of the moving groove (501) is provided with two springs (302), the spring (302) is fixedly connected with the baffle (301) at one end close to the baffle (301), the sliding block (3) and the sliding block (4) are provided with a spring (502).

6. A cushioned hydraulic cylinder as defined in claim 1, wherein, The inside of the cylinder (1) is provided with a telescopic cylinder (601), the inside of the telescopic cylinder (601) is slidably fitted with a telescopic rod (6), the bottom of the buffer plate (2) is provided with a pad (605), one end of the telescopic rod (6) is fixedly connected with the pad (605).

7. A cushioned hydraulic cylinder as claimed in claim 6, wherein, The inside of the telescopic cylinder (601) is slidably fitted with a moving block (602), one end of the telescopic rod (6) inside the telescopic cylinder (601) is fixedly connected with the moving block (602).

8. A cushioned hydraulic cylinder as defined in claim 6, wherein, The inside of the telescopic cylinder (601) is provided with a spring (603), the inside of the telescopic cylinder (601) is provided with a spring (604), the spring (603) and the spring (604) are fixedly connected with the moving block (602) at one end close to the moving block (602), the spring (603) is sleeved on the surface outside the telescopic rod (6).

Images