Assembly technique for lifting hydraulic cylinder piston

Abstract

The invention discloses an assembly technique for a lifting hydraulic cylinder piston. Lubricating grease is uniformly smeared in a groove, a first circular ring module and a second circular ring module are assembled in the part, on the front end of a cylinder barrel, of the groove, and then a third circular ring module is assembled in the groove; the piston is pushed towards the position where a Y-shaped sealing ring penetrates through the groove; the gap between the first circular ring module and the second circular ring module is levered, the third circular ring module is jacked down by the first circular ring module or the second circular module, and the first circular ring module and the second circular ring module are taken out after the third circular ring drops off; the piston is continuously pushed for assembly, the piston is easy to push into an oil cylinder to be assembled and disassembled, the time can be saved and the labor is relieved, and economy and environment protection can be achieved. The Y-shaped sealing ring can be quickly replaced, and damage to the Y-shaped sealing ring is avoided.

Description

[0001] The present invention is a divisional application of the application number 2013107130393, the application date is December 23, 2013, and the invention name is "an assembly tool and assembly process for jacking hydraulic cylinder piston". technical field [0002] The invention relates to a jacking hydraulic oil cylinder, in particular to an assembly process of a jacking hydraulic oil cylinder piston, which belongs to the technical field of construction. Background technique [0003] The tower crane lifting hydraulic cylinder is mainly composed of cylinder 1, piston rod 6, piston 3, cylinder head, cylinder tail, seals, accessories and so on. The seals are vulnerable parts. In the daily repair and maintenance of the oil cylinder, replacing the sealing device is the most common task, and the replacement of the Y-shaped sealing ring 4 is the main task. Such as figure 1 As shown, the inner wall of the front end of the cylinder 1 is provided with a groove 2 for assembl...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor has found that the prior art has at least the following deficiencies: when replacing the Y-shaped sealing ring 4, it is necessary to first assemble the Y-shaped sealing ring 4 in the sealing ring groove of the piston 3, and then replace the piston 3 Push into the cylinder 1, when the piston 3 advances, the flange 5 of the Y-shaped sealing ring 4 will be stuck in the groove 2 at the front end of the cylinder, so that the piston 3 cannot be pushed into the cylinder 1

This method is easy to cause damage to the flange 5 of the sealing ring, which will reduce its service life in the slightest and destroy its sealing effect in severe cases.

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