Piston rod mechanism of lightweight hydraulic oil cylinder

Abstract

The utility model discloses a piston rod mechanism of a lightweight hydraulic oil cylinder, which relates to the technical field of lightweight hydraulic oil cylinders and comprises a cylinder body and a moving mechanism arranged in the cylinder body. The end cover is arranged on the cylinder body; the guide block is arranged in the cylinder body; the piston rod is arranged in the cylinder body; the piston assembly is arranged on the piston rod; the oil inlet is formed in the cylinder bottom; the oil outlet is formed in the cylinder body and is fixedly connected with the cylinder body; and the damping mechanism is arranged on the cylinder bottom and used for relieving the impact of the piston assembly on the cylinder bottom. According to the device, by arranging the moving mechanism, it can be guaranteed that the device conducts effective hydraulic work, meanwhile, large parts in the moving mechanism are all made of lightweight materials, the weight of the device can be effectively reduced, and the device can be convenient to carry, install and fix.

Description

Technical Field

[0001] This utility model relates to the field of lightweight hydraulic cylinder technology, and in particular to a piston rod mechanism for a lightweight hydraulic cylinder. Background Technology

[0002] A hydraulic cylinder is an actuator that converts the hydraulic energy of pressurized oil into the mechanical energy of reciprocating linear motion. Its structure mainly consists of a cylinder body, piston rod, piston, and guide sleeve. The linear reciprocating motion is achieved by hydraulic oil acting on the two end faces of the piston. Currently, hydraulic cylinders are entirely made of metal and have a complex structure, resulting in excessive weight and making them inconvenient to carry and secure. Therefore, improvements are needed. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a piston rod mechanism for a lightweight hydraulic cylinder, which aims to solve the technical problem of excessive weight of the hydraulic cylinder as a whole.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A piston rod mechanism for a lightweight hydraulic cylinder includes a cylinder body and further includes:

[0006] A moving mechanism, disposed within the cylinder body, is used for hydraulic operation. The moving mechanism includes:

[0007] The cylinder bottom is disposed within the cylinder body and is fixedly connected to the cylinder body;

[0008] An end cap is disposed on the cylinder body and fixedly connected to the cylinder body;

[0009] A guide block is disposed within the cylinder body and is fixedly connected to the cylinder body;

[0010] A piston rod, disposed within the cylinder body, is used for connecting components;

[0011] A piston assembly is disposed on the piston rod and fixedly connected to the piston rod;

[0012] An oil inlet is located on the bottom of the cylinder and is fixedly connected to the bottom of the cylinder.

[0013] An oil outlet is provided on the cylinder body and is fixedly connected to the cylinder body;

[0014] A shock-absorbing mechanism is installed on the bottom of the cylinder to mitigate the impact of the piston assembly on the bottom of the cylinder.

[0015] Preferably, the shock absorption mechanism includes:

[0016] The mounting section is located on the bottom of the cylinder and is used for mounting components;

[0017] A shock-absorbing part is provided on the mounting part to mitigate impact.

[0018] Preferably, the mounting part includes:

[0019] A shock-absorbing chamber, located on the bottom of the cylinder, is used to fill liquid;

[0020] The liquid inlet chamber is located on the bottom of the cylinder for liquid to enter;

[0021] A shock absorber frame is disposed inside the shock absorber cavity and is slidably connected to the shock absorber cavity.

[0022] Preferably, the shock-absorbing part includes:

[0023] A shock-absorbing spring is provided on the shock-absorbing frame and the cylinder bottom, and is fixedly connected to the cylinder bottom;

[0024] A fixed column is disposed in the liquid inlet chamber and is fixedly connected to the liquid inlet chamber;

[0025] Piston rings are mounted on the fixed post and are fixedly connected to the fixed post.

[0026] Preferably, the cylinder body material is carbon fiber.

[0027] Preferably, the piston rod is made of aluminum alloy.

[0028] Preferably, the end cap is made of aluminum alloy, and a sealing ring and a dust cover are provided on the end cap.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0030] 1. This device, by setting up a moving mechanism, can ensure that the device can perform effective hydraulic operation. At the same time, the large parts in the moving mechanism are all made of lightweight materials, which can effectively reduce the weight of the device, making the device easy to carry and install. In addition, the device has a simple design.

[0031] 2. By incorporating a shock-absorbing mechanism, this device can be effectively protected, preventing damage to the device caused by excessively fast piston movement during operation, which could result in a large impact on the cylinder bottom. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A three-dimensional structural schematic diagram of the piston rod mechanism of a lightweight hydraulic cylinder is shown.

[0034] Figure 2 A front view schematic diagram of the piston rod mechanism of a lightweight hydraulic cylinder is shown.

[0035] Figure 3 A right-side structural schematic diagram of the piston rod mechanism of a lightweight hydraulic cylinder is shown.

[0036] Figure 4 It shows Figure 3 A schematic diagram of the cross-sectional structure of AA.

[0037] Figure 5 It shows Figure 4 Enlarged structural diagram at point A in the middle.

[0038] Legend:

[0039] 1. Cylinder block; 2. Cylinder bottom; 3. End cap; 4. Guide block; 5. Piston rod; 6. Piston assembly; 7. Oil inlet; 8. Oil outlet; 9. Damping chamber; 10. Liquid inlet chamber; 11. Damping frame; 12. Damping spring; 13. Fixing column; 14. Piston ring; 15. Dust cover; 16. Sealing ring. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Reference Figures 1 to 5 The present invention provides a further description of an embodiment of a lightweight hydraulic cylinder piston rod mechanism.

[0045] A piston rod mechanism for a lightweight hydraulic cylinder includes a cylinder body 1 and a moving mechanism disposed within the cylinder body 1 for hydraulic operation. The moving mechanism includes: a cylinder bottom 2 disposed within the cylinder body 1 and fixedly connected to the cylinder body 1; an end cap 3 disposed on the cylinder body 1 and fixedly connected to the cylinder body 1; a guide block 4 disposed within the cylinder body 1 and fixedly connected to the cylinder body 1; a piston rod 5 disposed within the cylinder body 1 for connecting components; a piston assembly 6 disposed on the piston rod 5 and fixedly connected to the piston rod 5; an oil inlet 7 disposed on the cylinder bottom 2 and fixedly connected to the cylinder bottom 2; an oil outlet 8 disposed on the cylinder body 1 and fixedly connected to the cylinder body 1; and a shock absorption mechanism disposed on the cylinder bottom 2 for mitigating the impact of the piston assembly 6 on the cylinder bottom 2.

[0046] refer to Figure 1 and Figure 2 In a preferred embodiment, the shock absorption mechanism includes: a mounting part disposed on the cylinder bottom 2 for mounting the component; and a shock absorption part disposed on the mounting part for mitigating impact.

[0047] refer to Figure 3 and Figure 4 In a preferred embodiment, the mounting part includes: a damping cavity 9 disposed on the cylinder bottom 2 for filling with liquid; a liquid inlet cavity 10 disposed on the cylinder bottom 2 for liquid to enter; and a damping frame 11 disposed inside the damping cavity 9 and slidably connected to the damping cavity 9.

[0048] refer to Figure 4 and Figure 5 In a preferred embodiment, the shock-absorbing part includes: a shock-absorbing spring 12, which is disposed on the shock-absorbing frame 11 and the cylinder bottom 2 and is fixedly connected to the cylinder bottom 2; a fixing column 13, which is disposed in the liquid inlet chamber 10 and is fixedly connected to the liquid inlet chamber 10; and a piston ring 14, which is disposed on the fixing column 13 and is fixedly connected to the fixing column 13.

[0049] In this configuration, the cylinder body 1 is made of carbon fiber, which has extremely high strength and is lightweight, effectively reducing the overall weight of the device. The piston rod 5 is made of aluminum alloy, which is lightweight and has good thermal conductivity, reducing not only the overall weight but also the total mass and force required for starting and accelerating the piston rod 5. The end cap 3 is made of aluminum alloy, which is lightweight and has good thermal conductivity, reducing the overall weight while working effectively with the piston rod 5. The end cap 3 is equipped with a sealing ring 16 and a dust cover 15, which effectively prevents oil leakage and dust from entering the cylinder body 1. The damping chamber 9 and the liquid inlet chamber 10 are interconnected, allowing liquid to flow between them. The device is equipped with multiple sealing rings 16. A sealing ring 16 is provided between the piston rod 5 and the end cap 3 and the guide block 4, between the piston assembly 6 and the cylinder body 1, and between the cylinder bottom 2 and the damping frame 11.

[0050] This device features a moving mechanism that ensures effective hydraulic operation. Large components within the moving mechanism are made of lightweight materials, significantly reducing the device's weight and making it easy to carry and install. Furthermore, a shock-absorbing mechanism effectively protects the device, preventing damage from excessive impact to the cylinder bottom 2 caused by the piston assembly 6's rapid movement during operation.

[0051] Working principle: When this device is in use, hydraulic oil enters the cylinder 1 through the oil inlet 7, causing the piston assembly 6 to push the piston rod 5 to perform hydraulic work. After the hydraulic work is completed, the hydraulic oil is discharged from the cylinder 1 through the oil outlet 8. The piston assembly 6 drives the piston rod 5 to quickly return to the initial position and impact the shock absorber 11. The shock absorber 11 moves within the shock absorber chamber 9 by compressing the shock absorber spring 12. The shock absorber spring 12 provides shock absorption through compression. The shock absorber chamber 9 is buffered by the liquid squeezed by the shock absorber 11, allowing the liquid in the shock absorber chamber 9 to enter the liquid inlet chamber 10 and push the piston ring 14 to move closer to the end cap 3 on the fixed column 13. When the piston assembly 6 leaves the shock absorber 11, the liquid in the liquid inlet chamber 10 no longer compresses the piston ring 14. At the same time, the shock absorber spring 12 rebounds, allowing the liquid in the liquid inlet chamber 10 to flow back into the shock absorber chamber 9, and the piston ring 14 also returns to the initial position.

[0052] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A piston rod mechanism for a lightweight hydraulic cylinder, comprising a cylinder body (1), characterized in that, Also includes: A moving mechanism, disposed within the cylinder (1), is used for hydraulic operation. The moving mechanism includes: The cylinder bottom (2) is disposed inside the cylinder body (1) and is fixedly connected to the cylinder body (1); End cap (3) is disposed on the cylinder body (1) and fixedly connected to the cylinder body (1); A guide block (4) is disposed inside the cylinder body (1) and is fixedly connected to the cylinder body (1); Piston rod (5), disposed inside the cylinder (1), is used for connecting components; A piston assembly (6) is disposed on the piston rod (5) and fixedly connected to the piston rod (5); An oil inlet (7) is provided on the cylinder bottom (2) and is fixedly connected to the cylinder bottom (2); An oil outlet (8) is provided on the cylinder body (1) and is fixedly connected to the cylinder body (1); A shock-absorbing mechanism is provided on the cylinder bottom (2) to mitigate the impact of the piston assembly (6) on the cylinder bottom (2).

2. The piston rod mechanism of a lightweight hydraulic cylinder according to claim 1, characterized in that, The shock absorption mechanism includes: The mounting part is provided on the bottom of the cylinder (2) and is used for mounting the component; A shock-absorbing part is provided on the mounting part to mitigate impact.

3. The piston rod mechanism of a lightweight hydraulic cylinder according to claim 2, characterized in that, The mounting part includes: A shock-absorbing cavity (9) is provided on the bottom of the cylinder (2) and is used to fill liquid; A liquid inlet chamber (10) is provided on the bottom of the cylinder (2) for liquid to enter; The shock absorber (11) is disposed inside the shock absorber cavity (9) and is slidably connected to the shock absorber cavity (9).

4. The piston rod mechanism of a lightweight hydraulic cylinder according to claim 3, characterized in that, The shock-absorbing component includes: A shock-absorbing spring (12) is disposed on the shock-absorbing frame (11) and the cylinder bottom (2) and is fixedly connected to the cylinder bottom (2); A fixed column (13) is disposed in the liquid inlet chamber (10) and fixedly connected to the liquid inlet chamber (10); Piston ring (14) is disposed on the fixed post (13) and fixedly connected to the fixed post (13).

5. The piston rod mechanism of a lightweight hydraulic cylinder according to claim 4, characterized in that, The cylinder body (1) is made of carbon fiber.

6. The piston rod mechanism of a lightweight hydraulic cylinder according to claim 5, characterized in that, The piston rod (5) is made of aluminum alloy.

7. The piston rod mechanism of a lightweight hydraulic cylinder according to claim 6, characterized in that, The end cap (3) is made of aluminum alloy, and a sealing ring (16) and a dust cover (15) are provided on the end cap (3).

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