Looseness-prevention device for piston of hydraulic oil cylinder
A hydraulic cylinder and piston technology, applied in the field of hydraulic cylinder piston anti-loosening devices, can solve the problems of increasing the space between the piston and the cylinder bottom, preventing elbows, increasing the installation size of the cylinder, etc., achieving easy assembly, reliable piston loosening, The effect of increasing reliability
Inactive Publication Date: 2016-07-20
泰州市海陵区固泰标准件厂
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But this increases the space between the piston and the bottom of the cylinder, and the installation size of the oil cylinder under the same stroke increases. In the case of a limited installation size of the oil cylinder, the double-nut piston lock is not easy to see.
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[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0013] see Figure 1-2 , the present invention provides a technical solution: a hydraulic cylinder piston anti-loosening device, including a piston rod 1, a piston 2, a two-way sealing ring 3, a key 4, a shaft circlip 5 and a cylinder bottom 6, the bottom of the cylinder 6 The inner front end is provided with a piston rod 1, and the piston rod 1 is provided with a keyway, and the piston 2 is fixedly connected to the upper right part of the piston rod 1 through...
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The invention discloses a looseness-prevention device for a piston of a hydraulic oil cylinder. The device comprises a piston rod, the piston, double-direction sealing rings, a clamping key, an elastic retaining ring for a shaft and a cylinder bottom; the piston rod is arranged at the front end of the inner side of the cylinder bottom, and the piston is fixedly connected to the upper right portion of the piston rod through matching of a screw hole and a screw; the upper portion of the piston is sleeved with the double-direction sealing rings, the clamping key is fixedly connected to the right side of the piston through a clamping opening, and the elastic retaining ring for the shaft is arranged on the upper portion of the clamping key; and according to the looseness-prevention device for the piston of the hydraulic oil cylinder, the thickness of the clamping key is smaller than the thickness of a nut with the diameter equal to that of the clamping key, space of the piston and the hydraulic cylinder bottom is saved, and meanwhile the piston, the screw hole for the piston and the screw for the piston are fixedly connected into a piston rod groove clamped by the clamping key in a matched manner, so that the piston cannot axially move and rotate. Accordingly, the distance between the piston and the hydraulic cylinder bottom is shortened, the looseness-prevention reliability of the piston is improved, piston looseness prevention is reliable, the cost is low, assembly is facilitated, and the structure is simple.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a hydraulic oil cylinder piston anti-loosening device. Background technique [0002] The piston fixing and anti-loosening device is generally used in hydraulic cylinders and other devices. During the repeated movement of the piston of the cylinder, the piston may become loose, which reduces the sealing performance of the piston and reduces the life of the sealing ring and the cylinder. Therefore, double nuts are generally used to prevent loosening. But in this way, the space between the piston and the bottom of the cylinder is increased, and the installation size of the oil cylinder under the same stroke is increased. In the case of a limited installation size of the oil cylinder, the double-nut piston is not easy to prevent loosening. Contents of the invention [0003] The object of the present invention is to provide a new type of coal mine crushing equipment t...
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Inventor 顾同春
Owner 泰州市海陵区固泰标准件厂