Impact mechanism energy accumulator for preventing cavitation damage
A technology of impact mechanism and accumulator, applied in the direction of actuator accumulator, mechanical equipment, fluid pressure actuating device, etc., can solve the problems of loss of buffer pressure fluctuation, diaphragm failure, etc., to reduce cavitation and cavitation, The effect of reducing disassembly and reducing impact
Inactive Publication Date: 2020-06-05
CHINA RAILWAY CONSTR HEAVY IND
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Problems solved by technology
When the high-speed flowing hydraulic oil medium flows through the narrow orifice flow channel of the accumulator, the oil medium is prone to cavitation in the narrow flow channel, and the local high temperature caused by the cavitation phenomenon is easy to flow on the diaphragm of the accumulator. Produces a series of small pits of burn damage, causing the diaphragm to fail, thereby losing its role in buffering pressure fluctuations and providing an emergency oil source
Method used
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[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.
[0026] Such as figure 1 As shown, an impact mechanism accumulator for preventing cavitation damage includes an outer shell 1 connected to the main body of the impact mechanism through bolts, an inner tank bottom plate 2 arranged in the outer shell 1, and an inner tank bottom plate 2 arranged between the outer shell 1 and the inner tank bottom plate 2. The diaphragm 3, the nitrogen chamber 12 arranged between the die 3 and the shell 1, and the oil chamber 13 arranged between the die 3 and the bottom plate 2 of the liner, the oil chamber 13 and the oil inlet 14 through several damping holes 11 arranged on the inner tank bottom plate 2;
[0027] The outer shell 1 is sealed and connected to the inner tank bottom plate 2 through a first sealing ring 8;
[002...
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The invention provides an impact mechanism energy accumulator for preventing cavitation damage. The impact mechanism energy accumulator comprises an outer shell (1) connected with an impact mechanismmain body through a bolt, an inner container bottom plate (2) arranged in the outer shell (1), a diaphragm (3) arranged between the outer shell (1) and the inner container bottom plate (2), a nitrogencavity (12) formed between the diaphragm (3) and the outer shell (1), and an oil liquid cavity (13) formed between the diaphragm (3) and the inner container bottom plate (2), wherein an inflation hole (4) for injecting nitrogen is further fixedly formed on the outer shell (1), and the inflation hole (4) is connected with the nitrogen cavity (12); and a plurality of damping holes (11) are fixedlyformed on the inner container bottom plate (3), and an oil inlet (14) is in through connection with the oil liquid cavity (13) through the damping holes (11). According to the impact mechanism energyaccumulator, a certain number of damping holes with rounded corners arranged at the inlet end and the outlet end are designed in the center of the bottom of the accumulator diaphragm so as to preventan oil liquid from entering the damping holes to generate the phenomenon of cavitation and cavitation erosion.
Description
technical field [0001] The invention relates to an energy accumulator on an impact mechanism, in particular to an energy accumulator with the function of preventing cavitation damage. Background technique [0002] Impact crushing equipment such as hydraulic rock drills and breaking hammers are widely used in tunnels, mines, water conservancy and hydropower, quarrying and other fields. When this type of impact equipment is performing impact operations, it uses the impact energy of the impact piston to achieve impact crushing on rocks. Especially for high-frequency impact mechanisms such as rock drills, when the impact piston returns, the accumulator converts the kinetic energy of the piston into the pressure potential energy of the hydraulic oil, and the piston pushes the hydraulic oil into the accumulator cavity. When the impact piston is in the stroke state , The accumulator provides an emergency oil source, driving the piston to quickly rush to the impacted object, thereby...
Claims
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IPC IPC(8): F15B1/04F15B1/08F15B1/10F15B20/00
CPCF15B1/04F15B1/08F15B1/10F15B20/00F15B2201/205F15B2201/3151F15B2201/405F15B2211/8606F15B2211/8609
Inventor 刘在政廖金军易达云钱垂军张坚甘士瑜徐震祝爽蒋海华伍容胡及雨
Owner CHINA RAILWAY CONSTR HEAVY IND