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hydraulic shock device

A hydraulic impact and hydraulic cylinder technology, which is applied in fluid pressure actuation devices, impact drilling, light impact tools, etc., can solve problems such as valve work delay, and achieve the effect of effective circulation

Active Publication Date: 2018-01-02
DOOFOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the trapped air is not removed, it will mix into the hydraulic fluid which will make cavitation more likely
The air in the device also causes a delay in the operation of the valve since air is compressible

Method used

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Examples

Experimental program
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Embodiment Construction

[0031] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0032] 1 to 4 are simplified diagrams of different examples of hydraulic percussion devices. because Figure 1a to Figure 3b as well as Figure 5a and Figure 5b Simplified in , the hydraulic cylinder block 1 is generally delineated by two straight horizontal lines, wherein the hydraulic cylinder is formed between said lines. because Figure 1a to Figure 3b as well as Figure 5a and Figure 5b For simplification in , valve 6 is depicted as a small cylinder in fluid communication with piston 3 . exist Figure 1a to Figure 5b , the direction of flow in the circuit of the device is indicated by the arrows.

[0033] An example of a hydraulic percussion device comprises a hydraulic cylinder block 1 , wherein the hydraulic cylinder block forms a hydraulic cylinder 2 . The hydraulic cylinder block 1 includes a piston 3 configured to b...

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PUM

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Abstract

A hydraulic percussion device comprising: a hydraulic cylinder block having a hydraulic cylinder formed therein; a piston in the hydraulic cylinder block configured to be moved by hydraulic fluid for movement in the hydraulic cylinder reciprocates between a first position and a second position. According to the invention, a first control channel and a second control channel extend from the valve; a first port and a second port lead to the hydraulic cylinder, wherein the first port is coupled to the first control channel and the second port is connected to the hydraulic cylinder. coupled to a second control passage; the piston includes at least one flow space arranged to be selectively coupled to the first port and the second port and to allow hydraulic fluid in one direction in one of the control passages flow to provide circulation of hydraulic fluid that controls the valves.

Description

technical field [0001] The present invention relates to a hydraulic percussion device and components for hydraulic percussion on material, such as drilling in rock or similar applications. Background technique [0002] One example of a hydraulic impact device includes a piston that hydraulically reciprocates between a first position and a second position. This movement is hydraulically controlled by a control device connected to the device. The control device may comprise a valve, eg located in the device and the connection to the piston. [0003] Hydraulic percussion devices are used, for example, in hydraulic machines working in rock drilling or similar applications. Rock drilling is often performed in mines or construction equipment. It is not uncommon for some mining facilities to be able to produce thousands of tons of ore a year from rock. Hydraulic percussion devices are also used for drilling and sampling, general excavation, tunnel construction, and roof bolting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/04E21B3/00
CPCB25D17/06B25D9/12B25D2250/231B25D2217/0019E21B4/14E21B1/26
Inventor 亚科·哈马莱宁
Owner DOOFOR