Damping type hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a damping type hydraulic oil cylinder which comprises a hydraulic oil cylinder, and a damping assembly is arranged at the upper end of the hydraulic oil cylinder. The damping assembly comprises a piston rod arranged at one end of the hydraulic oil cylinder, the outer wall of one end of the piston rod is wrapped with a connecting joint, a movable groove is formed in the lower side of the connecting joint, and a connecting plate is arranged on the upper side of the interior of the movable groove. A guide rod on the outer wall of the piston rod vertically slides on the inner wall of the sliding groove to guide stress, so that damping is conducted through a damper, damping operation can be conveniently conducted on the connecting position of the piston rod and the connecting joint, and the use efficiency of the hydraulic oil cylinder is improved; the first spring gives bounce to the guide rod, the guide rod is prevented from being clamped on the inner wall of the sliding groove, the guide effect is prevented from being affected, and the sealing ring achieves the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a shock-absorbing hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. This makes it widely used in the hydraulic systems of various machines. Traditional shock-absorbing hydraulic cylinders can basically meet people's needs.

[0003] A shock-absorbing hydraulic cylinder is disclosed in patent CN217539168U. This patent includes a hydraulic cylinder body, a sealing arc-shaped groove, a mounting cover, a first sealing block, a sealing arc-shaped block, a fixing groove, a limiting groove, a moving groove, a slide rail, a first spring, a limiting block, a movable groove, a guide rod, a mounting tie rod, a second spring, a second sealing block, a hydraulic lifting rod, a movable plug, a positioning rod, a sealing plug, a sleeve, a movable rod, an arc-shaped elastic plate, and a third spring. By installing the movable plug, sleeve, and movable rod, hydraulic oil compresses the movable plug, causing it to press against the third spring. The movable rod then compresses the arc-shaped elastic plate within the sleeve, causing the arc-shaped elastic plate to contract. Subsequently, the elastic force of the arc-shaped elastic plate and the third spring causes the movable plug to reset, thus achieving good shock absorption. The device achieves a pressing effect by installing a limit block, a mounting rod, and a second spring. Pulling the mounting rod outward compresses the second spring within the guide rod, causing it to contract and preventing contact between the mounting rod and the limit block. This facilitates the reset of the limit block and its separation from the limiting groove. This structure allows for easy disassembly of the mounting cover and the hydraulic cylinder body. The device also features a limit groove, a moving groove, and a first spring. The mounting cover, by driving the hydraulic lifting rod into the hydraulic cylinder body, is fixed to the outer wall of the positioning rod. Simultaneously, the mounting rod inserts into the moving groove, compressing the limit block, causing it to insert into the limiting groove and stretching the first spring. This structure, through the limit block inserting into the limiting groove, secures the mounting cover within the hydraulic cylinder body. However, this patent also has the following problems:

[0004] One end of the piston rod is connected to a spherical bearing. When the spherical bearing is subjected to impact or tension, it vibrates and transmits the vibration to the piston rod, which in turn transmits it to the piston. The piston and the inner wall of the cylinder are subjected to force, which over time will affect the sealing performance of the piston, thereby affecting the operation of the hydraulic cylinder, shortening the service life of the hydraulic cylinder, and bringing certain adverse effects to the use process.

[0005] To address the above problems, a shock-absorbing hydraulic cylinder needs to be designed to overcome them. Utility Model Content

[0006] The main objective of this invention is to provide a shock-absorbing hydraulic cylinder that can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A shock-absorbing hydraulic cylinder includes a hydraulic cylinder, wherein a shock-absorbing component is provided at the upper end of the hydraulic cylinder;

[0009] The shock absorption assembly includes a piston rod disposed at one end of a hydraulic cylinder. A connecting joint is wrapped around the outer wall of one end of the piston rod. A movable groove is formed inside the lower side of the connecting joint. A connecting plate is disposed on the upper side of the movable groove. A damper is disposed on one side of the connecting plate. A connecting block is disposed at one end of the damper. A sliding groove is formed around the perimeter of the movable groove. Guide rods are disposed around the perimeter of the outer wall of the piston rod. A second spring is sleeved on the outer wall of the guide rod. A first spring is disposed at each end of the sliding groove. A sealing ring is disposed at the connection between the connecting joint and the piston rod.

[0010] As a preferred embodiment of this utility model, the number of sliding grooves is four, the number of guide rods is four, and the number of first springs in each sliding groove is two.

[0011] As a preferred embodiment of this utility model, one end of the guide rod is fixedly connected to the piston rod, and the other end of the guide rod is slidably connected to the slide groove.

[0012] As a preferred embodiment of this utility model, the first spring is fixedly connected to the slide groove, and the second spring is movably sleeved with the guide rod.

[0013] As a preferred embodiment of this utility model, the connecting plate is fixedly connected to the movable groove, and the damper is fixedly connected to the connecting plate.

[0014] As a preferred embodiment of this utility model, the damper is fixedly connected to the connecting block, the connecting block is fixedly connected to the piston rod, and the sealing ring is snapped into the connecting joint.

[0015] As a preferred embodiment of this utility model, the number of connecting plates is two sets, and the number of dampers is two sets.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this utility model, a shock-absorbing hydraulic cylinder is designed. The guide rod on the outer wall of the piston rod slides vertically with the inner wall of the slide groove to guide the force, thereby reducing shock through the damper. This facilitates the shock-absorbing operation at the connection between the piston rod and the connecting joint, and improves the efficiency of the hydraulic cylinder.

[0019] 2. In this utility model, a shock-absorbing hydraulic cylinder is designed, and first springs are respectively set at both ends of the slide groove. The first springs give the guide rod a rebound force to prevent the guide rod from getting stuck in the inner wall of the slide groove and affecting the guiding effect. The sealing ring also plays a sealing role. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the hydraulic cylinder of this utility model;

[0021] Figure 2 This is a side sectional view of the hydraulic cylinder of this utility model.

[0022] Figure 3 This is a structural schematic diagram of part A of this utility model.

[0023] In the diagram: 1. Hydraulic cylinder; 2. Shock absorber assembly; 3. Connecting joint; 4. Piston rod; 5. Sealing ring; 6. Movable groove; 7. Slide groove; 8. First spring; 9. Guide rod; 10. Second spring; 11. Connecting plate; 12. Damper; 13. Connecting block. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-3 As shown, a shock-absorbing hydraulic cylinder includes a hydraulic cylinder 1, and a shock-absorbing component 2 is provided at the upper end of the hydraulic cylinder 1.

[0026] The shock absorption assembly 2 includes a piston rod 4 disposed at one end of the hydraulic cylinder 1. A connecting joint 3 is wrapped around the outer wall of one end of the piston rod 4. A movable groove 6 is provided inside the lower side of the connecting joint 3. A connecting plate 11 is provided on the upper side of the interior of the movable groove 6. A damper 12 is provided on one side of the connecting plate 11. A connecting block 13 is provided at one end of the damper 12. A sliding groove 7 is provided around the perimeter of the movable groove 6. Guide rods 9 are respectively provided around the perimeter of the outer wall of the piston rod 4. A second spring 10 is sleeved on the outer wall of the guide rod 9. A first spring 8 is respectively provided at both ends of the interior of the sliding groove 7. A sealing ring 5 is provided at the connection between the connecting joint 3 and the piston rod 4.

[0027] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3As shown, there are four sets of slide grooves 7, four sets of guide rods 9, two sets of first springs 8 in each slide groove 7, one end of the guide rod 9 is fixedly connected to the piston rod 4, the other end of the guide rod 9 is slidably connected to the slide groove 7, the first spring 8 is fixedly connected to the slide groove 7, the second spring 10 is movably sleeved with the guide rod 9, the connecting plate 11 is fixedly connected to the movable groove 6, the damper 12 is fixedly connected to the connecting plate 11, the damper 12 is fixedly connected to the connecting block 13, the connecting block 13 is fixedly connected to the piston rod 4, the sealing ring 5 is snapped into the connecting joint 3, and there are two sets of connecting plates 11 and two sets of dampers 12.

[0028] The connecting plate 11 is fixedly installed between the movable groove 6, the damper 12 is fixedly connected to the connecting plate 11, the connecting block 13 is fixedly connected to the damper 12, and the connecting block 13 is fixedly connected to the piston rod 4, so as to facilitate shock absorption through the damper 12.

[0029] The working process of this utility model is as follows: When the shock-absorbing hydraulic cylinder designed in this scheme is in operation, the connecting joint 3 is connected to the piston rod 4 and then operates. When the connecting joint 3 is subjected to external force during use, the guide rod 9 around the outer wall of the piston rod 4 slides vertically on the inner wall of the slide groove 7 to guide the force. The damper 12 performs shock absorption. When the guide rod 9 slides a large amplitude, it compresses the first spring 8 at both ends inside the slide groove 7, causing it to contract. The rebound force of the first spring 8 itself allows the guide rod 9 to continue sliding, which helps to prevent the guide rod 9 from getting stuck at both ends inside the slide groove 7. The connecting block 13 serves to connect the piston rod 4 and the damper 12. The outer wall of the guide rod 9 is fitted with a second spring 10, which improves the performance of the guide rod 9. The sealing ring 5 provides a sealing effect, which can effectively enable the hydraulic cylinder 1 to perform shock absorption and improve the efficiency of the hydraulic cylinder 1.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing hydraulic cylinder, comprising a hydraulic cylinder (1), characterized in that: The upper end of the hydraulic cylinder (1) is provided with a shock-absorbing component (2); The shock absorption assembly (2) includes a piston rod (4) disposed at one end of a hydraulic cylinder (1). A connecting joint (3) is wrapped around the outer wall of one end of the piston rod (4). A movable groove (6) is provided inside the lower side of the connecting joint (3). A connecting plate (11) is provided on the upper side inside the movable groove (6). A damper (12) is provided on one side of the connecting plate (11). A connecting block (13) is provided at one end of the damper (12). A sliding groove (7) is provided around the movable groove (6). A guide rod (9) is provided around the outer wall of the piston rod (4). A second spring (10) is sleeved on the outer wall of the guide rod (9). A first spring (8) is provided at both ends inside the sliding groove (7). A sealing ring (5) is provided at the connection between the connecting joint (3) and the piston rod (4).

2. The shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The number of the slide grooves (7) is four, the number of the guide rods (9) is four, and the number of the first springs (8) provided in each slide groove (7) is two.

3. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: One end of the guide rod (9) is fixedly connected to the piston rod (4), and the other end of the guide rod (9) is slidably connected to the slide groove (7).

4. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The first spring (8) is fixedly connected to the slide (7), and the second spring (10) is movably connected to the guide rod (9).

5. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The connecting plate (11) is fixedly connected to the movable groove (6), and the damper (12) is fixedly connected to the connecting plate (11).

6. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The damper (12) is fixedly connected to the connecting block (13), the connecting block (13) is fixedly connected to the piston rod (4), and the sealing ring (5) is snapped into the connecting joint (3).

7. A shock-absorbing hydraulic cylinder according to claim 1, characterized in that: The number of connecting plates (11) is two, and the number of dampers (12) is two.

Images