Middle cylinder block of hydraulic breaking hammer and manufacturing method of middle cylinder block

A technology of hydraulic breaker and manufacturing method, applied in forging/pressing/hammer devices, forging/pressing/hammering machinery, manufacturing tools, etc., which can solve the difficulty of processing and production and the increase of product failure rate, and cannot maintain the hydraulic breaker Performance, breaking hammer can not work normally, etc., to achieve the effect of strong adhesion, prevent strain, and strengthen structural strength
CN113550375AActive Publication Date: 2021-10-26江苏玖润机械工业科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
江苏玖润机械工业科技有限公司
Publication Date
2021-10-26

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Abstract

The invention relates to the technical field of hydraulic breaking hammers, in particular to a manufacturing method of a middle cylinder block of a hydraulic breaking hammer. The middle cylinder block comprises a middle cylinder block body, wherein a piston cavity is longitudinally formed in the middle cylinder block body; an energy accumulator cavity and a control valve signal channel which communicate with the piston cavity are also formed in the middle cylinder block body; a reticulate pattern structure is uniformly distributed on the inner wall of the piston cavity and uniformly distributed in a whole inner cavity; the outer layer of the reticulate pattern structure is coated with a soft film; and the soft film covers the inner wall of the piston cavity. An original signal slot is eliminated, so that the amount, demanded by the signal slot, of hydraulic oil can be reduced, the structural strength of the middle cylinder block body can be enhanced, and the effect of preventing internal leakage can be achieved; the soft film has certain resilience, so that hard friction strain can be prevented; through the reticulate pattern structure, the adhesion of the soft film can be stronger; meanwhile, the soft film has the functions of adsorbing the hydraulic oil and increasing the timeliness of an oil film staying on the inner wall of the cylinder block; and due to the fact that the oil film is regarded as a main factor for supporting a piston in a vacuum environment of the inner cavity, the occurrence probability of cylinder scoring can be effectively prevented.
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Description

technical field

[0001] The invention relates to the technical field of hydraulic breakers, in particular to a cylinder body of a hydraulic breaker and a manufacturing method thereof. Background technique

[0002] The hydraulic breaker is mainly loaded on the hydraulic excavator and loader, which converts the hydraulic energy into mechanical impact energy, relies on the hydraulic pressure to drive the piston to reciprocate, and drives the drill rod to achieve the breaking function. It has high operating efficiency and low energy consumption. Compared with traditional blasting , its noise is low, and it can be widely used in complex crushing and demolition environments, and is widely used in mining, building construction, metallurgical industry, road, railway and municipal engineering and other fields.

[0003] With the expansion of breaker models, the difficulty of processing and production and the failure rate of products have also increased significantly. The faults are mai...

Claims

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