Damping mechanism for piston rod of hydraulic oil cylinder

Abstract

The damping mechanism comprises a hydraulic oil cylinder body and a piston rod body, the piston rod body is connected with the top end of the hydraulic oil cylinder body in a sliding and inserting mode, an inserting hole is formed in the top end of the piston rod body, a damper is fixedly connected in the inserting hole, and a connecting column is fixedly connected to the top end of the damper. Sliding grooves are formed in the two sides of the connecting column, a mounting column is fixedly connected to the top end of the connecting column, a connecting ring is fixedly connected to the top end of the mounting column, fixing bolts are inserted into the two sides of the piston rod body in a threaded mode and slide in the sliding grooves, and a dustproof oil sealing ring is clamped to the top end of the hydraulic oil cylinder body. The fixing bolt is driven by the piston rod body to move in the sliding groove, so that the connecting column and the mounting column are driven to move, the limiting effect is achieved, and loss of the piston rod body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinder live rod shock absorption, in particular to a shock absorption mechanism for a hydraulic oil cylinder piston rod. Background Art

[0002] The hydraulic piston rod is an important part of the hydraulic system, mainly used to convert pressure into tension or thrust and transmit this force to the working mechanism. Hydraulic piston rods are widely used in mechanical equipment, metallurgy, aviation, aerospace and other fields.

[0003] At present, most of the existing hydraulic piston rod shock absorbers install shock-absorbing springs between the piston rod and the connecting ring for shock absorption, and no limit device is set. As a result, when the connecting ring is connected to an external device and is contracted, the spring has extensibility and is connected to the external device, which greatly increases the workload of the cylinder, causing damage to the cylinder and affecting the normal operation of the equipment. Utility Model Content

[0004] The utility model aims to solve the problem that there is no limiting device when the existing hydraulic rod is contracted, and to protect the hydraulic cylinder, and proposes a shock absorbing mechanism for the piston rod of the hydraulic cylinder.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A shock absorbing mechanism for a hydraulic cylinder piston rod comprises a hydraulic cylinder body and a piston rod body. The piston rod body is slidably plugged into the top end of the hydraulic cylinder body. A plug-in hole is provided at the top end of the piston rod body. A damper is fixedly connected in the plug-in hole. A connecting column is fixedly connected to the top end of the damper. Slide grooves are provided on both sides of the connecting column. A mounting column is fixedly connected to the top end of the connecting column. A connecting ring is fixedly connected to the top end of the mounting column. Fixing bolts are threadedly plugged into both sides of the piston rod body. The fixing bolts slide in the slide grooves.

[0007] Furthermore, a dustproof oil sealing ring is clamped on the top of the hydraulic cylinder body.

[0008] Furthermore, a first dustproof ring is clamped on the bottom of the hydraulic cylinder body.

[0009] Furthermore, a second dustproof ring is clamped inside the connecting ring.

[0010] The beneficial effects of the utility model are:

[0011] 1. The piston rod body drives the fixing bolt to move in the slide groove, thereby driving the connecting column and the mounting column to move, thereby playing a limiting role and reducing the loss of the piston rod body.

[0012] 2. The damper is used to reduce the vibration of the piston rod body and extend the service life of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a shock absorbing mechanism for a hydraulic cylinder piston rod proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of the structure after extension and contraction of a shock absorbing mechanism for a hydraulic cylinder piston rod proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the explosion structure of a shock absorbing mechanism for a hydraulic cylinder piston rod proposed by the utility model;

[0016] Figure 4 The utility model is a schematic cross-sectional structural diagram of part A of a shock absorbing mechanism for a hydraulic cylinder piston rod.

[0017] In the figure: 1. Hydraulic cylinder body; 2. Dustproof oil sealing ring; 3. First dustproof ring; 301. Second dustproof ring; 4. Piston rod body; 5. Damper; 6. Connecting column; 7. Slide groove; 8. Fixing bolt; 9. Mounting column; 10. Connecting ring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-Figure 4 A shock absorbing mechanism for a hydraulic cylinder piston rod comprises a hydraulic cylinder body 1 and a piston rod body 4. The piston rod body 4 is slidably plugged with the top end of the hydraulic cylinder body 1. A plug-in hole is provided at the top end of the piston rod body 4. A damper 5 is fixed in the plug-in hole by bolts. The movement of the piston rod body 4 is damped by the damper 5. A connecting column 6 is fixed to the top end of the damper 5 by bolts. Slide grooves 7 are provided on both sides of the connecting column 6. A mounting column 9 is welded to the top end of the connecting column 6. A connecting ring 10 is welded to the top end of the mounting column 9. Fixing bolts 8 are threadedly plugged on both sides of the piston rod body 4. The fixing bolts 8 slide in the slide groove 7. The fixing bolts 8 are driven to move in the slide groove 7 by the piston rod body 4, thereby driving the connecting column 6 and the mounting column 9 to move, thereby playing a limiting role, thereby reducing the loss of the piston rod body 4.

[0020] A dustproof oil sealing ring 2 is clamped on the top of the hydraulic cylinder body 1 to prevent oil dust from entering the hydraulic cylinder body 1 , a first dustproof ring 3 is clamped on the bottom of the hydraulic cylinder body 1 , and a second dustproof ring 301 is clamped in the connecting ring 10 .

[0021] The working principle of this embodiment is as follows: the movement of the piston rod body 4 is damped by the damper 5. During operation, the fixing bolt 8 moves in the slide groove 7 driven by the piston rod body 4, thereby driving the connecting column 6 and the mounting column 9 to move, and then driving the connecting ring 10 to move, thereby realizing the movement of the hydraulic cylinder.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shock absorbing mechanism for a hydraulic cylinder piston rod, comprising a hydraulic cylinder body (1) and a piston rod body (4), characterized in that: The piston rod body (4) is slidably plugged into the top end of the hydraulic cylinder body (1); a plug-in hole is provided at the top end of the piston rod body (4); a damper (5) is fixedly connected in the plug-in hole; a connecting column (6) is fixedly connected to the top end of the damper (5); a slide groove (7) is provided on both sides of the connecting column (6); a mounting column (9) is fixedly connected to the top end of the connecting column (6); a connecting ring (10) is fixedly connected to the top end of the mounting column (9); fixing bolts (8) are threadedly plugged into both sides of the piston rod body (4); and the fixing bolts (8) slide in the slide groove (7).

2. A shock absorbing mechanism for a hydraulic cylinder piston rod according to claim 1, characterized in that: A dustproof oil sealing ring (2) is clamped on the top end of the hydraulic cylinder body (1).

3. A shock absorbing mechanism for a hydraulic cylinder piston rod according to claim 1, characterized in that: A first dustproof ring (3) is clamped on the bottom of the hydraulic cylinder body (1).

4. A shock absorbing mechanism for a hydraulic cylinder piston rod according to claim 1, characterized in that: A second dustproof ring (301) is clamped inside the connecting ring (10).

Images