Anti-loosening hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinders, in particular to an anti-loosening hydraulic cylinder which comprises a cylinder barrel, a cylinder cover arranged at one end of the cylinder barrel and a piston rod penetrating through the cylinder cover. The surface of the cylinder barrel is in contact with the surface of the cylinder cover, a groove is formed in the surface of the cylinder barrel and / or the surface of the cylinder cover, a gasket is arranged in the groove, and the gasket is embedded in the groove. According to the anti-loosening hydraulic cylinder, loosening between the cylinder barrel and the cylinder cover can be effectively prevented, the anti-loosening hydraulic cylinder can be used for a long time after being assembled at a time, manpower and time are saved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to an anti-loosening hydraulic cylinder. Background Art

[0002] A hydraulic cylinder, also known as a hydraulic oil cylinder, is an actuator that converts hydraulic energy into mechanical energy. It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] The cylinder head and cylinder body of the existing hydraulic cylinder are usually connected by threads. When assembling, workers need to tighten the threads to the required torque. However, when the piston rod drives the piston to reciprocate in the cylinder barrel, it is easy to drive the cylinder head to rotate in the circumferential direction, causing the cylinder head and the cylinder barrel to move in the axial direction, making the cylinder head and the cylinder body loose, and need to be tightened manually again, which is time-consuming and labor-intensive, affecting the use of the hydraulic cylinder. Utility Model Content

[0004] In order to solve the above technical problems existing in the prior art, the utility model provides an anti-loosening hydraulic cylinder.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The utility model provides an anti-loosening hydraulic cylinder, comprising a cylinder barrel, a cylinder cover arranged at one end of the cylinder barrel and a piston rod penetrating the cylinder cover; the surface of the cylinder barrel is arranged in contact with the surface of the cylinder cover, a groove is provided on the surface of the cylinder barrel and / or the surface of the cylinder cover, a gasket is arranged in the groove, and the gasket is embedded in the groove.

[0007] The anti-loosening hydraulic cylinder provided by the utility model can effectively prevent the loosening between the cylinder barrel and the cylinder cover, can be used for a long time after being assembled once, saves manpower and time, and improves work efficiency.

[0008] On the basis of the above technical solution, the present invention can also make the following technical improvements:

[0009] Furthermore, a through hole is provided on the cylinder cover, a gasket is provided in the through hole, and the gasket is embedded in the through hole.

[0010] The beneficial effect of adopting the above further technical solution is that the through hole arrangement on the cylinder head can reduce the difficulty of processing.

[0011] Furthermore, the number of the groove is at least one.

[0012] Furthermore, when the number of the grooves is greater than one, grooves are provided on the surface of the cylinder barrel and the surface of the cylinder head.

[0013] Furthermore, the grooves are symmetrically or spaced apart around the piston rod.

[0014] The beneficial effect of adopting the above further technical solution is that grooves are provided on the surface of the cylinder barrel and the surface of the cylinder head, which can prevent the cylinder head from rotating in two directions along the axial direction, thereby improving the fastening effect and preventing loosening.

[0015] Furthermore, the diameter of the groove is 8-12 mm.

[0016] The beneficial effect of adopting the above further technical solution is to improve the tightness of the connection between the cylinder barrel and the cylinder head to avoid loosening, while reducing costs.

[0017] Furthermore, the gasket is an annular gasket.

[0018] Furthermore, the gasket is made of metal.

[0019] Furthermore, the thickness of the gasket is 1-2 mm.

[0020] The beneficial effect of adopting the above-mentioned further technical solution is that an annular gasket with a thickness of 1-2 mm is used, which is conducive to the deformation of the gasket, so that when the cylinder barrel contacts the surface of the cylinder head, the annular gasket deforms and embeds into the groove or through hole, thereby improving the tightness of the connection between the cylinder barrel and the cylinder head and avoiding looseness.

[0021] Furthermore, the cylinder barrel and the cylinder cover are threadedly connected.

[0022] Compared with the prior art, the utility model has the following technical effects:

[0023] The anti-loosening hydraulic cylinder provided by the utility model can effectively prevent the loosening between the cylinder barrel and the cylinder cover, can be used for a long time after being assembled once, saves manpower and time, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram showing the structure of an anti-loosening hydraulic cylinder according to an embodiment of the utility model is shown;

[0025] Reference numerals:

[0026] 1. Cylinder barrel; 2. Cylinder head; 3. Piston rod; 4. Through hole; 5. Groove; 6. First annular gasket; 7. Second annular gasket. DETAILED DESCRIPTION

[0027] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0028] See also Figure 1 The anti-loosening hydraulic cylinder provided by the utility model comprises a cylinder barrel 1 and a cylinder cover 2 arranged at one end of the cylinder barrel 1. The cylinder barrel 1 and the cylinder cover 2 are connected by threads, and a piston rod 3 passes through the cylinder cover 2 and reciprocates in the cylinder barrel 1. The surface of the cylinder barrel 1 is arranged in contact with the surface of the cylinder cover 2, and a through hole 4 is provided on the surface of the cylinder cover 2. At another position, a groove 5 is provided on the surface of the cylinder barrel 1, and a first annular gasket 6 is placed in the through hole 4, and the first annular gasket 6 is embedded in the through hole 4. A second annular gasket 7 is placed in the groove 5, and the second annular gasket 7 is embedded in the groove 5.

[0029] After manually tightening the threads between the cylinder barrel 1 and the cylinder head 2, that is, after the cylinder head 2 and the cylinder barrel 1 are installed in place, they are knocked to deform the first annular gasket 6 and the second annular gasket 7, so that the gaskets are embedded in the corresponding through holes 4 or grooves 5. Specifically, the first annular gasket 6 is deformed toward the cylinder head 2, and the deformed first annular gasket 6 is embedded in the through hole 4, and the second annular gasket 7 is deformed toward the cylinder barrel 1, and the deformed second annular gasket 7 is embedded in the groove 5, so as to improve the fastening force between the cylinder barrel 1 and the cylinder head 2, avoid loosening, and prevent the cylinder head 2 and the cylinder barrel 1 from rotating and affecting the normal working of the piston rod.

[0030] The diameters of the through hole 4 and the groove 5 are 8-12 mm, and the thicknesses of the first annular gasket 6 and the second annular gasket 7 are 1-2 mm, so as to improve the fastening force of the connection between the cylinder barrel and the cylinder head, avoid loosening, and reduce costs.

[0031] The first annular gasket 6 and the second annular gasket 7 are made of metal so that the deformed gaskets can be embedded in the corresponding through holes 4 or grooves 5 to prevent loosening.

[0032] The anti-loosening hydraulic cylinder provided by the utility model can effectively prevent the loosening between the cylinder barrel and the cylinder cover, can be used for a long time after being assembled once, saves manpower and time, and improves work efficiency.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-loosening hydraulic cylinder, characterized in that: It comprises a cylinder barrel, a cylinder cover arranged at one end of the cylinder barrel and a piston rod passing through the cylinder cover; the surface of the cylinder barrel is arranged in contact with the surface of the cylinder cover, a groove is provided on the surface of the cylinder barrel and / or the surface of the cylinder cover, a gasket is arranged in the groove, and the gasket is embedded in the groove.

2. The anti-loosening hydraulic cylinder according to claim 1, characterized in that: The cylinder cover is also provided with a through hole, a gasket is arranged in the through hole, and the gasket is embedded in the through hole.

3. The anti-loosening hydraulic cylinder according to claim 1, characterized in that: The number of the groove is at least one.

4. The anti-loosening hydraulic cylinder according to claim 3, characterized in that: When the number of the grooves is greater than one, grooves are provided on the surface of the cylinder barrel and the surface of the cylinder cover.

5. The anti-loosening hydraulic cylinder according to claim 4, characterized in that: The grooves are symmetrically or spaced apart around the piston rod.

6. The anti-loosening hydraulic cylinder according to claim 1, characterized in that: The diameter of the groove is 8-12 mm.

7. The anti-loosening hydraulic cylinder according to claim 1 or 2, characterized in that: The gasket is an annular gasket.

8. The anti-loosening hydraulic cylinder according to claim 1 or 2, characterized in that: The gasket is made of metal.

9. The anti-loosening hydraulic cylinder according to claim 1 or 2, characterized in that: The thickness of the gasket is 1-2 mm.

10. The anti-loosening hydraulic cylinder according to claim 1, characterized in that: The cylinder barrel and the cylinder cover are threadedly connected.

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