Hydraulic cylinder body convenient to assemble

Abstract

The utility model relates to the field of hydraulic cylinder bodies, in particular to a hydraulic cylinder body convenient to assemble, which comprises a cylinder body shell, a piston rod is arranged in an inner cavity of the cylinder body shell, a guide sleeve is arranged at one end of the cylinder body shell, a gland is arranged at one end of the guide sleeve, and a ring is arranged on the inner wall of the guide sleeve. The ring is installed between the inner wall of the guide sleeve and the piston rod, a step is arranged on the inner wall of the gland, and a protruding block is fixedly installed on the outer wall of the guide sleeve and is designed to be annular; the pressing cover and the guide sleeve are designed in a split mode, the guide sleeve and the ring are directly inserted into the inner cavity of the cylinder shell, twisting of the ring is avoided, abrasion of the ring is reduced, the step on the pressing cover and the protruding block on the guide sleeve can complete fixed installation of the guide sleeve along with twisting of the pressing cover, and therefore the pressing cover and the guide sleeve are convenient to use. And the stability of the guide sleeve is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder bodies, and specifically to a hydraulic cylinder body that is easy to assemble. Background Technology

[0002] The hydraulic cylinder body is one of the core components of hydraulic actuators, widely used in engineering machinery, mining equipment, and automated production lines. It is responsible for converting hydraulic energy into mechanical energy to realize the linear reciprocating motion or oscillating motion of the mechanism. Existing hydraulic cylinder bodies generally have a sealing structure, which seals the inside of the cylinder body through the cooperation of a gland, guide sleeve, and sealing ring. The guide sleeve and gland are designed as an integral part. During installation, the gland is turned to rotate the guide sleeve and sealing ring. The threaded connection between the gland and the cylinder end face completes the installation of the sealing ring. However, during the turning process, friction occurs between the sealing ring and the outer wall of the piston rod and the inner wall of the cylinder body, causing damage to the sealing ring and reducing its service life. Utility Model Content

[0003] Based on the above description, this utility model provides a hydraulic cylinder body that is easy to assemble, so as to solve the problem that the existing hydraulic cylinder body is prone to wear of the sealing ring when installing the sealing ring.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a hydraulic cylinder body that is easy to assemble, including a cylinder body shell, and a piston rod is provided in the inner cavity of the cylinder body shell;

[0005] A guide sleeve is provided at one end of the cylinder shell, a pressure cap is provided at one end of the guide sleeve, and a shaped ring is provided on the inner wall of the guide sleeve. The shaped ring is installed between the inner wall of the guide sleeve and the piston rod.

[0006] The inner wall of the gland is provided with a step, and the outer wall of the guide sleeve is fixedly installed with a protrusion, which is designed to be annular. One end of the protrusion is movably fitted with the inner wall of the step, and the inner wall of the gland is threadedly connected to one end of the outer wall of the cylinder shell.

[0007] Furthermore, the rings are all fitted onto the outer wall of the piston rod, and the side wall of the guide sleeve is provided with a mounting groove for installing the rings.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, a ball bearing is movably engaged at one end of the pressure cap, and the end of the ball bearing away from the pressure cap is movably fitted against the end face of the guide sleeve.

[0010] Furthermore, a positioning rod is fixedly installed at one end of the cylinder shell, and a positioning groove is opened at one end of the guide sleeve, with the positioning rod movably inserted into the inner cavity of the positioning groove.

[0011] Furthermore, an airbag is installed in the inner cavity of the positioning groove, and a connecting tube is fixedly connected to one side of the airbag. The end of the connecting tube away from the airbag is connected to the molding ring.

[0012] Furthermore, the airbag is designed as a ring, and the cross-section of the positioning rod is designed as a hemispherical shape. After the positioning rod is inserted into the positioning groove, it compresses the airbag.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0014] 1. This utility model separates the pressure cap and the guide sleeve, allowing the guide sleeve and the ring to be directly inserted into the inner cavity of the cylinder body shell, thus avoiding the need to twist the ring and reducing wear on the ring. The step on the pressure cap and the protrusion on the guide sleeve can be fixedly installed as the pressure cap is twisted, ensuring the stability of the guide sleeve.

[0015] 2. By creating a positioning groove on the guide sleeve and using a positioning rod on the cylinder shell, the guide sleeve is fixed during insertion, preventing the guide sleeve from rotating due to the screwing of the gland, which would cause wear on the piston ring. Ball bearings are also installed on the gland to reduce friction between the gland and the guide sleeve, thus reducing wear. An air bladder is installed in the positioning groove, which, together with the compression of the positioning rod, inflates the piston ring, enhancing the seal between the guide sleeve and the piston rod. Before inflation, the piston ring is in a contracted state, preventing friction between the piston ring and the inner wall of the cylinder shell during guide sleeve installation. Attached Figure Description

[0016] Figure 1 A schematic diagram of a hydraulic cylinder body that is easy to assemble, provided for an embodiment of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 4 This is a cross-sectional structural schematic diagram provided for an embodiment of the present utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Cylinder housing; 11. Positioning rod; 2. Guide sleeve; 21. Positioning groove; 22. Airbag; 23. Connecting pipe; 3. Pressure cap; 31. Ball bearing; 4. Piston rod; 5. O-ring; 6. Protrusion; 7. Step. Detailed Implementation

[0023] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0025] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the technical product is in use. They are used only for the convenience of describing the technology 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 the technology. Furthermore, "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 indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. Therefore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this technology, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0028] Please see Figure 1 , Figure 2 and Figure 3 A hydraulic cylinder body that is easy to assemble includes a cylinder body shell 1, and a piston rod 4 is disposed in the inner cavity of the cylinder body shell 1;

[0029] A guide sleeve 2 is provided at one end of the cylinder housing 1, a pressure cap 3 is provided at one end of the guide sleeve 2, and a ring 5 is provided on the inner wall of the guide sleeve 2. The ring 5 is installed between the inner wall of the guide sleeve 2 and the piston rod 4.

[0030] The inner wall of the pressure cap 3 is provided with a step 7, and the outer wall of the guide sleeve 2 is fixedly installed with a protrusion 6, which is designed to be annular. One end of the protrusion 6 is movably fitted with the inner wall of the step 7, and the inner wall of the pressure cap 3 is threadedly connected to one end of the outer wall of the cylinder housing 1.

[0031] The pressure cap 3 and the guide sleeve 2 are separate designs. The guide sleeve 2 is installed by directly inserting it into the inner cavity of the cylinder housing 1 without screwing, thus avoiding wear on the ring 5 due to screwing. After the guide sleeve 2 is inserted, the pressure cap 3 is installed and placed on the end face of the cylinder housing 1. The pressure cap 3 is screwed on by using the threaded connection between the pressure cap 3 and the cylinder housing 1. At the same time, the step 7 on the pressure cap 3 fits against the protrusion 6 on the guide sleeve 2, thus completing the fixation of the guide sleeve 2.

[0032] Please see Figure 1 and Figure 2 In this embodiment, the rings 5 ​​are all sleeved on the outer wall of the piston rod 4, and the side wall of the guide sleeve 2 is provided with a mounting groove for installing the rings 5.

[0033] Please see Figure 4 and Figure 5 In this embodiment, one end of the pressure cap 3 is movably engaged with a ball bearing 31, and the end of the ball bearing 31 away from the pressure cap 3 is movably fitted with the end face of the guide sleeve 2.

[0034] When the pressure cap 3 is turned, the ball bearing 31 on the pressure cap 3 will reduce the friction between the pressure cap 3 and the guide sleeve 2, thereby reducing the wear between the two.

[0035] Please see Figure 4 and Figure 5In this embodiment, a positioning rod 11 is fixedly installed at one end of the cylinder outer shell 1, and a positioning groove 21 is opened at one end of the guide sleeve 2, and the positioning rod 11 is movably inserted into the inner cavity of the positioning groove 21.

[0036] When the guide sleeve 2 is inserted into the inner cavity of the cylinder housing 1, the positioning rod 11 will be inserted into the positioning groove 21 to position the guide sleeve 2, so as to prevent the pressure cap 3 from rotating together with the guide sleeve 2 when it is turned, causing rotational wear of the cavity.

[0037] Please see Figure 4 and Figure 5 In this embodiment, an airbag 22 is installed in the inner cavity of the positioning groove 21. A connecting tube 23 is fixedly connected to one side of the airbag 22. The end of the connecting tube 23 away from the airbag 22 is connected to the ring 5.

[0038] As the guide sleeve 2 is inserted into the inner cavity of the cylinder housing 1, the positioning rod 11 enters the positioning groove 21 to squeeze the air bag 22, allowing the gas inside the air bag 22 to enter the ring 5 through the connecting pipe 23. The ring 5 is made of rubber and has an internal cavity to facilitate inflation and expansion, thereby enhancing the sealing between the guide sleeve 2 and the piston rod 4.

[0039] Please see Figure 4 and Figure 5 In this embodiment, the airbag 22 is designed as a ring, and the cross-section of the positioning rod 11 is designed as a hemispherical shape. After the positioning rod 11 is inserted into the positioning groove 21, it squeezes the airbag 22. The end face of the positioning rod 11 is designed as a hemispherical shape, which can avoid puncturing the airbag 22.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic cylinder body that is easy to assemble, comprising a cylinder body shell (1), wherein a piston rod (4) is disposed in the inner cavity of the cylinder body shell (1), characterized in that: One end of the cylinder housing (1) is provided with a guide sleeve (2), one end of the guide sleeve (2) is provided with a pressure cap (3), and the inner wall of the guide sleeve (2) is provided with a ring (5), which is installed between the inner wall of the guide sleeve (2) and the piston rod (4). The inner wall of the pressure cap (3) is provided with a step (7), and the outer wall of the guide sleeve (2) is fixedly installed with a protrusion (6), and the protrusion (6) is designed as a ring. One end of the protrusion (6) is movably fitted with the inner wall of the step (7), and the inner wall of the pressure cap (3) is threadedly connected to one end of the outer wall of the cylinder shell (1).

2. The hydraulic cylinder body for easy assembly according to claim 1, characterized in that, The rings (5) are all sleeved on the outer wall of the piston rod (4), and the side wall of the guide sleeve (2) is provided with a mounting groove for installing the rings (5).

3. The hydraulic cylinder body for easy assembly according to claim 1, characterized in that, One end of the pressure cap (3) is movably engaged with a ball (31), and the end of the ball (31) away from the pressure cap (3) is movably fitted with the end face of the guide sleeve (2).

4. A hydraulic cylinder body that is easy to assemble according to claim 1, characterized in that, A positioning rod (11) is fixedly installed at one end of the cylinder shell (1), and a positioning groove (21) is opened at one end of the guide sleeve (2), and the positioning rod (11) is movably inserted into the inner cavity of the positioning groove (21).

5. A hydraulic cylinder body for easy assembly according to claim 4, characterized in that, An airbag (22) is installed in the inner cavity of the positioning groove (21). A connecting tube (23) is fixedly connected to one side of the airbag (22). The end of the connecting tube (23) away from the airbag (22) is connected to the ring (5).

6. A hydraulic cylinder body for easy assembly according to claim 5, characterized in that, The airbag (22) is designed as a ring, and the cross section of the positioning rod (11) is designed as a hemispherical shape. After the positioning rod (11) is inserted into the positioning groove (21), it squeezes the airbag (22).

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