Piston rod protection sleeve

Abstract

The utility model discloses a piston rod protective sleeve, which relates to the technical field of piston rods and comprises a protective sleeve main body, connecting sleeves are fixedly arranged at two ends of the protective sleeve main body, a plurality of connecting holes are formed in the outer wall of each connecting sleeve, and telescopic rods are inserted into the inner walls of the connecting holes. The ends, close to each other, of the multiple telescopic rods are fixedly connected with extrusion plates, reset springs are fixedly arranged between the extrusion plates and the connecting sleeves, threaded pipes are fixedly arranged at the ends, away from the protective sleeve body, of the connecting sleeves, and threaded rings are connected to the outer walls of the threaded pipes through threads. A connecting ring is fixedly arranged on one side of the threaded ring, and an inclined face is arranged at one end of the connecting ring. The protective sleeve has the advantages that the operation is simple, and the protective sleeve main body can be conveniently mounted and dismounted.

Description

Technical Field

[0001] This utility model relates to the field of piston rod technology, and in particular to a piston rod protective sleeve. Background Technology

[0002] The piston rod is the connecting component that supports the piston in performing work. Its main function is to transmit the force acting on the piston and drive its movement. In moving parts such as hydraulic cylinders and pneumatic cylinders, the piston rod plays a crucial role. Its machining quality directly affects the lifespan and reliability of the entire product. During use, the piston rod is equipped with a protective sleeve. The main function of the piston rod protective sleeve is to protect the piston rod and other mechanical components from contaminants such as dust, dirt, moisture, and chemicals, thereby extending the service life of the components and maintaining the normal operation of the machinery. It also reduces the direct contact between the piston rod and the external environment, lowering the risk of wear and corrosion.

[0003] CN222542768U discloses a protective sleeve for the piston rod of a wind turbine pitch cylinder, comprising: a main assembly, which includes a protective sleeve body, a zipper, and a clamp; wherein, the zipper is sewn inside one end of the protective sleeve body, two sets of clamps are provided, and the clamps are fixed on the left and right sides of the outer surface of the protective sleeve body, with the zipper located inside the clamps, and a guide assembly; the guide assembly includes a fixed frame, a movable plate, and a limiting plate. This addresses the problem that, due to the lack of a protective sleeve on the pitch cylinder piston rod during the initial design of the unit, the piston rod suffers increased wear and surface scratches due to components falling from the hub or being stepped on by maintenance personnel during routine maintenance, resulting in reduced service life. This leads to increased derivative defects such as oil leakage and low hydraulic system pressure, exposing increasingly prominent safety issues and posing significant safety hazards.

[0004] However, similar to the piston rod protective sleeve mentioned above, when in use, the protective sleeve body is usually installed on the cylinder and piston rod by clamps, which is a relatively cumbersome operation and reduces the installation efficiency of the protective sleeve. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a piston rod protective sleeve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A piston rod protective sleeve includes a protective sleeve body, with connecting sleeves fixedly installed at both ends of the protective sleeve body. Multiple connecting holes are formed on the outer wall of the connecting sleeves, and telescopic rods are inserted into the inner walls of the connecting holes. A pressing plate is fixedly connected to one end of each of the multiple telescopic rods that are close to each other. A return spring is fixedly installed between the pressing plate and the connecting sleeve. A threaded tube is fixedly installed at the end of the connecting sleeve away from the protective sleeve body. A threaded ring is threadedly connected to the outer wall of the threaded tube, and a connecting ring is fixedly installed on one side of the threaded ring. One end of the connecting ring has a bevel.

[0008] The present invention is further provided that each of the multiple telescopic rods has a rotating groove at one end that is far apart from each other, and a rotating ball is rolled on the inner wall of the rotating groove.

[0009] The present invention is further configured such that the cross-section of the rotating groove is a three-quarter circle.

[0010] The present invention is further configured such that the extrusion plate is arc-shaped.

[0011] The present invention is further provided in that anti-slip pads are fixedly provided on the side of the plurality of extrusion plates that are close to each other, and the side of the plurality of anti-slip pads that are close to each other is provided with a plurality of anti-slip grooves, the anti-slip grooves being toothed.

[0012] The present invention is further configured such that the main body of the protective sleeve is made of nylon cloth.

[0013] The present invention is further configured such that one of the threaded tubes is composed of multiple arc-shaped threaded plates, and the arc-shaped threaded plates are rotatably connected to the connecting sleeve, and the outer wall of the arc-shaped threaded plates is provided with mounting holes.

[0014] The present invention is further configured such that the connecting sleeve is funnel-shaped.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. When installing the piston rod protective sleeve, first insert the protective sleeve body onto the piston rod, so that the threaded tube is sleeved on the outside of the cylinder body, and the connecting sleeve contacts the cylinder body. Then rotate the threaded ring, which drives the connecting ring to move, thereby causing the inclined surface of the connecting ring to press the telescopic rod to move. The telescopic rod drives the arc-shaped pressing plate to press the outer wall of the cylinder body, thereby fixing one end of the protective sleeve body. The other end is fixed to the piston rod by rotating the threaded ring in the same way. When disassembling, simply rotate the threaded ring in the opposite direction. The operation is simple and convenient for installing and disassembling the protective sleeve body.

[0017] 2. The piston rod protective sleeve reduces the friction between the telescopic rod and the connecting ring by rotating the ball, thereby facilitating the movement of the telescopic rod driven by the connecting ring.

[0018] 3. In actual use, the piston rod protective sleeve is installed inside the housing. At this time, the threaded ring is rotated in the opposite direction to remove the threaded ring and the connecting ring. Then, the arc-shaped threaded plate is moved to unfold it. Then, the arc-shaped threaded plate is fixed to the housing by aligning the mounting holes with bolts, which increases the applicability of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a piston rod protective sleeve proposed in this utility model;

[0020] Figure 2 This is an exploded three-dimensional structural diagram of a piston rod protective sleeve threaded tube and a Luvon ring proposed in this utility model.

[0021] Figure 3 This is a partial front sectional view of the piston rod protective sleeve return spring and the extrusion plate proposed in this utility model.

[0022] Figure 4 This is a partial three-dimensional structural diagram of the arc-shaped threaded plate and mounting hole of the piston rod protective sleeve proposed in this utility model.

[0023] In the diagram: 1. Protective sleeve body; 2. Connecting sleeve; 3. Threaded ring; 4. Threaded tube; 401. Arc-shaped threaded plate; 5. Connecting ring; 6. Bevel; 7. Connecting hole; 8. Telescopic rod; 9. Extrusion plate; 10. Anti-slip pad; 11. Rotating groove; 12. Rotating ball; 13. Return spring; 14. Mounting hole. Detailed Implementation

[0024] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0025] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0026] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent 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 patent.

[0027] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0028] Reference Figures 1-3 A piston rod protective sleeve includes a protective sleeve body 1. Connecting sleeves 2 are fixedly provided at both ends of the protective sleeve body 1. Multiple connecting holes 7 are opened on the outer wall of the connecting sleeve 2. Telescopic rods 8 are inserted into the inner wall of the connecting holes 7. Extrusion plates 9 are fixedly connected to the ends of the multiple telescopic rods 8 that are close to each other. A return spring 13 is fixedly provided between the extrusion plate 9 and the connecting sleeve 2. A threaded tube 4 is fixedly provided at the end of the connecting sleeve 2 away from the protective sleeve body 1. A threaded ring 3 is threadedly connected to the outer wall of the threaded tube 4. A connecting ring 5 is fixedly provided on one side of the threaded ring 3. An inclined surface 6 is provided at one end of the connecting ring 5.

[0029] Reference Figure 3 Each of the multiple telescopic rods 8 has a rotating groove 11 at one end that is far apart from each other. A rotating ball 12 is rolled on the inner wall of the rotating groove 11. The rotating ball 12 reduces the friction between the connecting ring 5 and the telescopic rod 8, making it easier to drive the telescopic rod 8 to move. The cross section of the rotating groove 11 is a three-quarter circle. The three-quarter circle design prevents the rotating ball 12 from falling out of the rotating groove 11.

[0030] Reference Figure 1 and Figure 2 The extrusion plate 9 is arc-shaped, which facilitates fitting the piston rod. Anti-slip pads 10 are fixedly provided on the side of the multiple extrusion plates 9 that are close to each other. Multiple anti-slip grooves are opened on the side of the multiple anti-slip pads 10 that are close to each other. The anti-slip grooves are toothed. Through the anti-slip pads 10 and the anti-slip grooves, the friction between the anti-slip pads 10 and the cylinder body is increased, thereby increasing the stability of the protective sleeve body 1 during installation.

[0031] Reference Figure 1 and Figure 4The protective sleeve body 1 is made of nylon cloth, which facilitates telescopic movement. One of the threaded tubes 4 is composed of multiple arc-shaped threaded plates 401, and the arc-shaped threaded plates 401 are rotatably connected to the connecting sleeve 2. The outer wall of the arc-shaped threaded plates 401 is provided with mounting holes 14. The design of multiple arc-shaped threaded plates 401 is suitable for installation in different scenarios. The connecting sleeve 2 is funnel-shaped, which facilitates contact between cylinders of different sizes and the inner wall of the connecting sleeve 2.

[0032] Working principle: When installing the protective sleeve body 1, first insert the protective sleeve body 1 onto the piston rod, so that the threaded tube 4 is sleeved on the outside of the cylinder body, and the connecting sleeve 2 contacts the cylinder body. Then rotate the threaded ring 3, which drives the connecting ring 5 to move, thereby causing the inclined surface 6 of the connecting ring 5 to press the telescopic rod 8 to move. The telescopic rod 8 drives the arc-shaped pressing plate 9 to press the outer wall of the cylinder body, thereby fixing one end of the protective sleeve body 1. The other end is fixed by rotating the threaded ring 3. When disassembling, simply rotate the threaded ring 3 in the opposite direction. The operation is simple and convenient for installing and disassembling the protective sleeve body 1.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A piston rod protection sleeve comprising a protection sleeve body (1), characterized in that Both ends of the protective sleeve body (1) are fixedly provided with connecting sleeves (2), the outer wall of the connecting sleeve (2) is provided with a plurality of connecting holes (7), the inner wall of the connecting hole (7) is inserted with an extension rod (8), the end of the extension rod (8) close to each other is fixedly connected with an extrusion plate (9), the extrusion plate (9) and the connecting sleeve (2) are fixedly provided with a reset spring (13), the end of the connecting sleeve (2) away from the protective sleeve body (1) is fixedly provided with a threaded pipe (4), the outer wall of the threaded pipe (4) is connected with a threaded ring (3) through threads, one side of the threaded ring (3) is fixedly provided with a connecting ring (5), one end of the connecting ring (5) is provided with an inclined plane (6).

2. A piston rod protection sleeve according to claim 1, characterized in that The end of the extension rod (8) away from each other is provided with a rotating groove (11), the inner wall of the rotating groove (11) is rolling provided with a rotating ball (12).

3. A piston rod protection sleeve according to claim 2, characterized in that The cross section of the rotating groove (11) is three quarters of a circle.

4. A piston rod protection sleeve according to claim 1, characterized in that The extrusion plate (9) is arc-shaped.

5. A piston rod protection sleeve according to claim 4, characterized in that The side of the extrusion plate (9) close to each other is fixedly provided with a non-slip pad (10), the side of the non-slip pad (10) close to each other is provided with a plurality of non-slip grooves, the non-slip groove is dentate.

6. A piston rod protection sleeve according to claim 1, characterized in that The protective sleeve body (1) is made of nylon cloth material.

7. A piston rod protection sleeve according to claim 1, characterized in that One of the threaded pipes (4) is composed of a plurality of arc-shaped threaded plates (401), and the arc-shaped threaded plate (401) is rotatably connected with the connecting sleeve (2), the outer wall of the arc-shaped threaded plate (401) is provided with a mounting hole (14).

8. A piston rod protection sleeve according to claim 7, characterized in that The connecting sleeve (2) is funnel-shaped.

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