Hydraulic oil cylinder structure

Abstract

The utility model discloses a hydraulic oil cylinder structure, which relates to the field of hydraulic oil cylinders and comprises an oil cylinder main body, a piston rod is mounted on the oil cylinder main body, two adjusting frames are symmetrically and fixedly mounted at one end of the oil cylinder main body, each adjusting frame consists of a first U-shaped frame, a threaded rod and a rotating plate, and the threaded rod is rotatably mounted in the first U-shaped frame. The rotating plate is fixedly mounted at one end of the threaded rod, a mounting frame is mounted on the threaded rod, the mounting frame is composed of a second U-shaped frame and an L-shaped plate, the L-shaped plate is fixedly mounted at the outer end of the second U-shaped frame, a clamping piece is mounted in the second U-shaped frame, and the clamping piece is composed of a third U-shaped frame, a clamping spring, a limiting plate and a rubber block. The piston rod, the adjusting frame, the mounting frame and the clamping piece are arranged on the oil cylinder body, meanwhile, the clamping piece makes contact with the piston rod, the speed of the piston rod in the return stroke process can be reduced, impact on the oil cylinder body in the piston rod return stroke process is reduced, and then the probability of damage to the oil cylinder body and the piston rod can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic oil cylinder, especially relates to a hydraulic oil cylinder structure. BACKGROUND

[0002] Hydraulic oil cylinder is a kind of actuator in hydraulic system, for converting hydraulic energy into mechanical energy, realizes linear reciprocating motion (or swing motion).It is usually composed of cylinder, cylinder cover, piston, piston rod, sealing device, buffer device and exhaust device etc.parts.It is the working principle of hydraulic oil cylinder that high-pressure oil output by plunger pump promotes the piston movement in oil cylinder, and then drives actuator to reciprocate.It is widely used in machinery, construction, metallurgy, petroleum, aviation etc.fields, such as crane, excavator, road roller, metal rolling mill, drilling equipment, etc., has compact structure, motion is stable, output torque is big, bears big load, long life, reliability etc.advantages, can adapt to various complex and harsh working environment and precision requirements.The speed of hydraulic cylinder piston rod return is too fast, and great inertial force can be generated.This inertial force is closely related to the mass of hydraulic cylinder and connected parts, speed change rate and other factors.When the oil in hydraulic cylinder flows fast, it may encounter the obstruction of pipeline, valve and other components, thereby generating additional pressure.Hydraulic cylinder and connected parts can be damaged due to bearing excessive inertial force and pressure, such as cylinder body rupture, piston rod bending etc.The stability of hydraulic system can be affected, leading to system pressure fluctuation, flow instability and other problems.The impact of hydraulic cylinder can also be transmitted to the whole mechanical equipment, affecting the working performance and precision of equipment, so in order to avoid the impact of hydraulic cylinder piston rod return, a kind of hydraulic oil cylinder structure is needed. UTILITY MODEL CONTENTS

[0003] The main purpose of the utility model is to provide a kind of hydraulic oil cylinder structure, can effectively solve the problems in the background art.

[0004] To achieve the above object, the technical scheme adopted by the utility model is:

[0005] The utility model provides a hydraulic cylinder structure, including the cylinder main body, the piston rod is installed on the cylinder main body, the both ends of cylinder main body are fixedly installed with two adjusting frame, the adjusting frame is composed of first U-shaped frame, threaded rod and rotating plate, threaded rod rotates and installs in first U-shaped frame, the one end of rotating plate is fixedly installed in threaded rod, install the mount on threaded rod, the mount is composed of second U-shaped frame and L shaped plate, L shaped plate is fixedly installed in the outer end of second U-shaped frame, installs the clamping piece in second U-shaped frame, the clamping piece is composed of third U-shaped frame, clamping spring, limiting plate and rubber block, clamping spring is fixedly installed in the outer end of third U-shaped frame, the both ends of limiting plate are fixedly installed in the upper and lower ends of third U-shaped frame, and the rubber block is fixedly installed on the inner wall of third U-shaped frame, and the rubber block is in contact with the piston rod.

[0006] Preferably, the first U-shaped frame on the adjusting frame is fixedly installed on one end of the cylinder main body, and two mounting holes are symmetrically formed on the wall bodies on the left and right sides of the first U-shaped frame.

[0007] Preferably, the threaded rod is rotatably installed in the two mounting holes formed on the first U-shaped frame, and the rotating plate is located outside the first U-shaped frame.

[0008] Preferably, a threaded hole is formed on the L-shaped plate of the mount, and the L-shaped plate is installed on the threaded rod through the threaded hole.

[0009] Preferably, two guide rail grooves are formed on the wall bodies on the upper and lower sides of the second U-shaped frame.

[0010] Preferably, the limiting plates of the clamping piece are slidably installed in the guide rail grooves, the third U-shaped frame is slidably installed in the second U-shaped frame, an inner end of the rubber block is provided with a clamping groove, and the rubber block is sleeved on the piston rod through the clamping groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By setting the piston rod, the adjusting frame, the mount and the clamping piece on the cylinder main body, and by making the clamping piece contact with the piston rod, the speed of the piston rod during return stroke can be reduced, the impact of the piston rod on the cylinder main body during return stroke can be reduced, and the probability of damage of the cylinder main body and the piston rod can be reduced. Meanwhile, the adjusting frame can adjust the position of the mount, so that the extrusion force of the piston rod caused by the clamping piece can be adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model;

[0014] Figure 2 It is a structure schematic view of the adjusting frame of the utility model;

[0015] Figure 3 It is the structure schematic view of the mounting frame of the utility model;

[0016] Figure 4 It is the structure schematic view of the clamping piece of the utility model.

[0017] In the drawing: 1, oil cylinder main body; 2, piston rod; 3, adjusting frame; 4, mounting frame; 5, clamping piece; 6, first U-shaped frame; 7, threaded rod; 8, second U-shaped frame; 9, L-shaped plate; 10, threaded hole; 11, guide rail groove; 12, third U-shaped frame; 13, clamping spring; 14, limiting plate; 15, rubber block; 16, clamping groove; 17, rotating plate; 18, mounting hole. DETAILED DESCRIPTION

[0018] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0019] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in a kind of hydraulic oil cylinder structure shown in the drawing, including oil cylinder main body 1, piston rod 2 is installed on oil cylinder main body 1, two adjusting frames 3 are symmetrically fixedly installed on one end of oil cylinder main body 1, adjusting frame 3 is composed of first U-shaped frame 6, threaded rod 7 and rotating plate 17, threaded rod 7 is rotatably installed in first U-shaped frame 6, rotating plate 17 is fixedly installed at one end of threaded rod 7, mounting frame 4 is installed on threaded rod 7, mounting frame 4 is composed of second U-shaped frame 8 and L-shaped plate 9, L-shaped plate 9 is fixedly installed at the outer end of second U-shaped frame 8, clamping piece 5 is installed in second U-shaped frame 8, clamping piece 5 is composed of third U-shaped frame 12, clamping spring 13, limiting plate 14 and rubber block 15, clamping spring 13 is fixedly installed at the outer end of third U-shaped frame 12, limiting plate 14 has two and is symmetrically fixedly installed at the upper and lower ends of third U-shaped frame 12, rubber block 15 is fixedly installed on the inner wall of third U-shaped frame 12, and rubber block 15 is in contact with piston rod 2, in use, under the elastic force of clamping spring 13, rubber block 15 will be in contact with piston rod 2, at this time, when piston rod 2 returns, piston rod 2 will generate friction with rubber block 15 on clamping piece 5, so as to reduce the speed when piston rod 2 returns;The position of mounting frame 4 can be adjusted by rotating threaded rod 7, so that when mounting frame 4 moves towards piston rod 2, clamping spring 13 will be compressed, at this time, the elastic reaction force of clamping spring 13 will be larger, and then the extrusion force of rubber block 15 on piston rod 2 will be larger, on the contrary, when threaded rod 7 is reversely rotated, when mounting frame 4 will be away from piston rod 2, at this time, clamping spring 13 will gradually stretch, so that the extrusion force of rubber block 15 on piston rod 2 will be smaller.

[0020] Finally, by arranging the piston rod 2, the adjusting frame 3, the mounting frame 4 and the clamping piece 5 on the oil cylinder body 1 and making the clamping piece 5 contact with the piston rod 2, the speed of the piston rod 2 during return stroke can be reduced, the impact of the piston rod 2 on the oil cylinder body 1 during return stroke can be reduced, and the damage probability of the oil cylinder body 1 and the piston rod 2 can be reduced; meanwhile, the adjusting frame 3 can adjust the position of the mounting frame 4, so that the extrusion force of the clamping piece 5 on the piston rod 2 can be adjusted.

[0021] Further, the first U-shaped frame 6 on the adjusting frame 3 is fixedly arranged at one end of the oil cylinder body 1, two mounting holes 18 are symmetrically arranged on the wall bodies on the left and right sides of the first U-shaped frame 6, the threaded rod 7 is rotatably arranged in the two mounting holes 18 of the first U-shaped frame 6, the rotating plate 17 is located outside the first U-shaped frame 6, the L-shaped plate 9 on the mounting frame 4 is provided with a threaded hole 10, the L-shaped plate 9 is arranged on the threaded rod 7 through the threaded hole 10, two guide groove 11 are arranged on the wall bodies on the upper and lower sides of the second U-shaped frame 8, the threaded rod 7 can be rotated through the rotating plate 17, the mounting frame 4 can move on the threaded rod 7 with the rotation of the threaded rod 7, and the threaded rod 7 can rotate in the mounting hole 18 of the first U-shaped frame 6 when the threaded rod 7 is rotated through the rotating plate 17.

[0022] Further, the limiting plate 14 on the clamping piece 5 is slidably arranged in the guide groove 11, the third U-shaped frame 12 is slidably arranged in the second U-shaped frame 8, the inner end of the rubber block 15 is provided with a clamping groove 16, and the rubber block 15 is sleeved on the piston rod 2 through the clamping groove 16; when the mounting frame 4 moves towards the piston rod 2, the rubber block 15 cannot move due to the block of the piston rod 2, so that the clamping spring 13 can be compressed by the mounting frame 4; when the mounting frame 4 moves away from the piston rod 2, the clamping spring 13 can be elastically restored and expanded; when the clamping spring 13 is gradually compressed, the elastic reaction force of the clamping spring 13 gradually increases, so that the extrusion force of the rubber block 15 on the piston rod 2 also increases; conversely, when the clamping spring 13 is gradually expanded, the elastic reaction force of the clamping spring 13 gradually decreases, so that the extrusion force of the rubber block 15 on the piston rod 2 also decreases.

[0023] The preferred embodiments of the utility model are described above, and are not used for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, the technical scheme recorded in the foregoing embodiments can still be modified or equivalent replaced for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A hydraulic cylinder structure, comprising a cylinder body (1), wherein a piston rod (2) is mounted on the cylinder body (1), characterized in that: Two adjusting brackets (3) are symmetrically fixedly installed at one end of the cylinder body (1). The adjusting bracket (3) consists of a first U-shaped bracket (6), a threaded rod (7), and a rotating plate (17). The threaded rod (7) is rotatably installed inside the first U-shaped bracket (6). The rotating plate (17) is fixedly installed at one end of the threaded rod (7). A mounting bracket (4) is installed on the threaded rod (7). The mounting bracket (4) consists of a second U-shaped bracket (8) and an L-shaped plate (9). The L-shaped plate (9) is fixedly installed outside the second U-shaped bracket (8). At the end, a clamping component (5) is installed inside the second U-shaped frame (8). The clamping component (5) consists of a third U-shaped frame (12), a clamping spring (13), a limiting plate (14), and a rubber block (15). The clamping spring (13) is fixedly installed on the outer end of the third U-shaped frame (12). There are two limiting plates (14) that are symmetrically fixedly installed on the upper and lower ends of the third U-shaped frame (12). The rubber block (15) is fixedly installed on the inner wall of the third U-shaped frame (12) and is in contact with the piston rod (2).

2. The hydraulic cylinder structure according to claim 1, characterized in that: The first U-shaped frame (6) on the adjustment frame (3) is fixedly installed at one end of the cylinder body (1), and two mounting holes (18) are symmetrically opened on the walls on the left and right sides of the first U-shaped frame (6).

3. The hydraulic cylinder structure according to claim 2, characterized in that: The threaded rod (7) is rotatably installed in two mounting holes (18) on the first U-shaped frame (6), and the rotating plate (17) is located on the outside of the first U-shaped frame (6).

4. The hydraulic cylinder structure according to claim 3, characterized in that: The L-shaped plate (9) on the mounting bracket (4) has a threaded hole (10), and the L-shaped plate (9) is mounted on the threaded rod (7) through the threaded hole (10).

5. A hydraulic cylinder structure according to claim 4, characterized in that: Two guide rail grooves (11) are provided on the upper and lower walls of the second U-shaped frame (8).

6. The hydraulic cylinder structure according to claim 5, characterized in that: The limiting plate (14) on the clamping member (5) is slidably installed in the guide rail groove (11), the third U-shaped frame (12) is slidably installed in the second U-shaped frame (8), and the inner end of the rubber block (15) is provided with a slot (16). The rubber block (15) is sleeved on the piston rod (2) through the slot (16).

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