Anti-deformation oil cylinder body

Abstract

The utility model relates to the technical field of oil cylinder, especially to an anti-deformation oil cylinder body. The anti-deformation oil cylinder body comprises an oil cylinder body, a cast carbon steel layer is fixedly embedded on a high manganese steel layer, and a hot strength steel layer is fixedly embedded on the cast carbon steel layer; a plurality of rotatingly connected steel balls are sleeved on the steel ring between adjacent middle connecting plates. When external falling objects hit the steel balls, the steel balls can rotate flexibly along the arc-shaped ball grooves, on the one hand, the falling objects can quickly roll along the surface of the steel balls, avoiding the impact force acting on the cylinder wall of the oil cylinder body for a long time, on the other hand, the curved surface structure of the arc-shaped ball grooves can disperse the concentrated impact force to a larger area of the oil cylinder body, reducing local stress concentration and avoiding cylinder wall depression or cracking.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a hydraulic cylinder body that is resistant to deformation. Background Technology

[0002] The cylinder body is the core load-bearing component of a hydraulic system, widely used in engineering machinery (such as excavators and cranes), metallurgical equipment, heavy transport vehicles and other fields. Its resistance to deformation, wear and heat directly determine the operational stability and service life of the hydraulic system.

[0003] In actual working conditions, the cylinder body must withstand multiple harsh conditions over a long period of time: First, the continuous radial pressure applied by high-pressure hydraulic oil can easily cause the cylinder wall to bulge and deform; second, the high-frequency vibration generated by equipment operation will exacerbate the fatigue of the cylinder body structure; third, the impact of falling objects (such as gravel and metal components) that may be encountered during outdoor operations can easily cause the cylinder wall to dent or even crack. However, the existing external reinforcement structure design of the cylinder body is simple, mostly relying on increasing the cylinder wall thickness to improve the resistance to deformation. This not only increases the overall weight, but also fails to provide effective support for weak areas of the cylinder body (such as the middle). At the same time, it lacks a buffer and force dispersion structure for external impacts. The impact force acts directly on the cylinder wall, which can easily cause local damage and significantly shorten the service life of the cylinder.

[0004] Therefore, it is necessary to provide a new type of deformation-resistant cylinder body to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a deformation-resistant cylinder body.

[0006] The anti-deformation cylinder body provided by this utility model includes a cylinder body, a cast carbon steel layer is fixedly embedded on the high manganese steel layer, and a heat-resistant steel layer is fixedly embedded on the cast carbon steel layer.

[0007] Multiple rotatably connected steel balls are fitted onto the steel ring between adjacent connecting plates.

[0008] Preferably, an arc-shaped ball groove is formed on the outer cylinder wall where the cylinder body abuts against the steel ball.

[0009] Preferably, the steel ball is matched with the arc-shaped spherical groove, and the steel ball can rotate along the arc-shaped spherical groove.

[0010] Preferably, a collar is fixedly fitted onto the steel ring between adjacent steel balls, thereby restricting the lateral movement of the steel balls along the steel ring.

[0011] Preferably, rubber gaskets are fixedly fitted onto both sides of the collar.

[0012] Preferably, the cylinder body includes a high-manganese steel layer, a cast carbon steel layer is fixedly embedded in the high-manganese steel layer, and a heat-resistant steel layer is fixedly embedded in the cast carbon steel layer.

[0013] Preferably, the upper and lower ends of the reinforcing connecting plate are fixedly fitted onto the upper and lower end caps of the cylinder body, and the inner wall of the reinforcing connecting plate abuts against the outer wall of the cylinder body.

[0014] Compared with related technologies, the anti-deformation cylinder body provided by this utility model has the following beneficial effects:

[0015] 1. This utility model has multiple reinforcing connecting plates arranged in a ring along the axial direction of the cylinder body. The upper and lower end plates are fixedly fitted into the upper and lower end caps of the cylinder body. The inner plate wall is tightly abutted against the outer wall of the cylinder body, forming a rigid reinforcing frame structure around the cylinder body. This structure can evenly distribute the radial pressure and vibration stress borne by the cylinder body, greatly reducing the risk of cylinder body bulging and bending deformation, while improving the overall structural stability of the cylinder body.

[0016] 2. When an external object strikes the steel ball, the steel ball can rotate flexibly along the arc-shaped ball groove. On the one hand, the object rolls quickly off the surface of the steel ball, avoiding the impact force acting on the cylinder wall of the cylinder body for a long time. On the other hand, the curved surface structure of the arc-shaped ball groove can disperse the concentrated impact force to a larger area of ​​the cylinder body, reducing local stress concentration and preventing the cylinder wall from denting or cracking. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the anti-deformation cylinder body provided by this utility model;

[0018] Figure 2 This is a cross-sectional view of the steel ball in contact with the cylinder body in this utility model.

[0019] Figure 3 This is a schematic diagram of the composite structure of the hydraulic cylinder body in this utility model.

[0020] The following are the labels in the diagram: 1. Cylinder body; 1a. Arc-shaped ball groove; 101. High manganese steel layer; 102. Cast carbon steel layer; 103. Heat-resistant steel layer; 2. Reinforcing connecting plate; 3. Steel ball; 4. Steel ring; 5. Collar. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 3 The present invention provides a deformation-resistant cylinder body, which includes a cylinder body 1, a reinforcing connecting plate 2, and steel balls 3.

[0024] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 A cast carbon steel layer 102 is fixedly embedded on the high manganese steel layer 101, and a heat-resistant steel layer 103 is fixedly embedded on the cast carbon steel layer 102.

[0025] It should be noted that by setting the high manganese steel layer 101, the wear resistance of the cylinder body 1 is improved, making it less prone to damage from friction during operation and extending the service life of the cylinder body 1. At the same time, the high manganese steel layer 101, together with the cast carbon steel layer 102, improves the strength, plasticity and toughness of the cylinder body 1, while the heat-resistant steel layer 103 improves the heat resistance of the cylinder body 1.

[0026] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 The cylinder body 1 is equipped with multiple reinforcing connecting plates 2 arranged in a ring along the cylinder body axis. Specifically, the upper and lower end plates of the reinforcing connecting plates 2 are fixedly fitted onto the upper and lower end caps of the cylinder body 1, and the inner wall of the reinforcing connecting plates 2 abuts against the outer wall of the cylinder body 1.

[0027] Multiple rotating steel balls 3 are fitted on the steel ring 4 between adjacent connecting plates 2. An arc-shaped ball groove 1a is opened on the outer cylinder wall of the cylinder body 1 that abuts against the steel balls. The steel balls 3 match the arc-shaped ball groove 1a, and the steel balls 3 can rotate along the arc-shaped ball groove 1a.

[0028] It should be noted that: multiple reinforcing connecting plates 2 are arranged in a ring along the axial direction of the cylinder body 1, and their upper and lower end plates are fixedly fitted into the upper and lower end caps of the cylinder body 1. The inner plate wall is tightly abutted against the outer wall of the cylinder body 1, forming a rigid reinforcing frame structure around the cylinder. This structure can evenly distribute the radial pressure and vibration stress borne by the cylinder, greatly reduce the risk of cylinder bulging and bending deformation, and improve the overall structural stability of the cylinder.

[0029] When an external object strikes the steel ball 3, the steel ball 3 can rotate flexibly along the arc-shaped ball groove 1a. On the one hand, this allows the object to roll quickly off the surface of the steel ball 3, preventing the impact force from acting on the cylinder wall of the cylinder body 1 for a long time. On the other hand, the curved surface structure of the arc-shaped ball groove 1a can disperse the concentrated impact force to a larger area of ​​the cylinder body 1, reducing local stress concentration and preventing the cylinder wall from denting or cracking.

[0030] In addition, a tungsten carbide wear-resistant coating with a thickness of 0.1-0.3 mm can be sprayed onto the inner wall of the arc-shaped ball groove 1a using plasma spraying technology. The tungsten carbide coating has high hardness and strong wear resistance, which can improve the wear resistance of the arc-shaped ball groove 1a by 3-5 times. At the same time, the steel ball 3 is made of high-strength stainless steel (such as 316L stainless steel), which further enhances the wear resistance and impact resistance of the steel ball 3 and extends the service life of the contact parts.

[0031] Furthermore, a collar 5 is fixedly fitted on the steel ring 4 between adjacent steel balls 3. The collar 5 restricts the steel balls 3 from moving laterally along the steel ring 4. Rubber gaskets are fixedly fitted on both sides of the collar 5. The rubber gaskets can reduce the wear between the steel balls 3 and the collar 5.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A deformation-resistant hydraulic cylinder body, characterized in that, Includes a cylinder body (1), on which multiple reinforcing connecting plates (2) are installed along the cylinder body axis and distributed in a ring, and multiple steel rings (4) are fixedly installed on the reinforcing connecting plates (2) and distributed at equal intervals. Multiple rotating steel balls (3) are fitted on the steel ring (4) between adjacent connecting plates (2).

2. The anti-deformation cylinder body according to claim 1, characterized in that, The cylinder body (1) has an arc-shaped ball groove (1a) on the outer cylinder wall that abuts against the steel ball.

3. The anti-deformation cylinder body according to claim 2, characterized in that, The steel ball (3) is matched with the arc-shaped spherical groove (1a), and the steel ball (3) can rotate along the arc-shaped spherical groove (1a).

4. The anti-deformation cylinder body according to claim 1, characterized in that, A collar (5) is fixedly fitted on the steel ring (4) between adjacent steel balls (3), and the steel balls (3) are restricted from moving laterally along the steel ring (4) by the collar (5).

5. The anti-deformation cylinder body according to claim 4, characterized in that, Both sides of the collar (5) are fixedly fitted with rubber gaskets.

6. The anti-deformation cylinder body according to claim 1, characterized in that, The cylinder body (1) includes a high manganese steel layer (101), a cast carbon steel layer (102) is fixedly embedded on the high manganese steel layer (101), and a heat-resistant steel layer (103) is fixedly embedded on the cast carbon steel layer (102).

7. The anti-deformation cylinder body according to claim 1, characterized in that, The upper and lower ends of the reinforcing connecting plate (2) are fixedly fitted onto the upper and lower end caps of the cylinder body (1), and the inner wall of the reinforcing connecting plate (2) abuts against the outer wall of the cylinder body (1).

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