An assembly tool and assembly process for jacking hydraulic cylinder piston

Abstract

The invention discloses an assembling tool of a jacking hydraulic oil cylinder piston. The assembling tool of the jacking hydraulic cylinder piston comprises a ring body, the ring body is formed by splitting a plurality of ring modules, and a splitting surface is formed between every two neighboring ring modules; the plane of one of the splitting surface is located passes by the center of the ring body, and the planes of other splitting surfaces are inclined to the plane of the splitting surface passing by the center of the ring body; the outer diameter of the ring body is identical to the inner diameter of the portion of a cylinder barrel where a groove is formed, the inner diameter of the ring body is identical to that of the portion of the cylinder barrel without the groove, and the width of the ring body is 0.2-0.5 mm smaller than that of the groove, so that the ring body can fill and level up the groove of the cylinder barrel. The assembling method of the jacking hydraulic oil cylinder piston comprises pushing the piston a Y-type seal ring across the position of an original groove; prying the gap between the first ring module and the second ring module to jack the third ring module out through the first ring module and the second ring module; after the third ring module drops out, taking the first ring module and the second ring module out. The assembling tool of the jacking hydraulic oil cylinder piston can achieve rapid replacement of the Y-type seal ring and avoid damage to the Y-type seal ring.

Description

technical field [0001] The invention relates to a jacking hydraulic oil cylinder, in particular to an assembly tool and an assembly process for a jacking hydraulic oil cylinder piston, and belongs to the technical field of construction. Background technique [0002] 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 assembling the sealing ring; as figure 2 As shown, the end of the piston 3 is provided with a Y-shaped sealing ring 4 , and the size of the flange 5 of the Y-shaped sealing ring 4 is larger than the inner diameter of the cylinder 1 . ...

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Problems solved by technology

[0003] 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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