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Rock breaking device, protection valve and a method of operating a rock breaking device

一种破岩设备、保护阀的技术，应用在保护阀,操作这种破岩设备领域，能够解决过高输入功率等问题，达到避免维修和维护、避免保证纠纷的效果

Active Publication Date: 2009-04-08
SANDVIK MINING & CONSTR OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Supplying incorrect power to the breaker can be a mistake, but it has also been observed that some operators choose an incorrect setting for the breaker in order to increase the output power of the breaker by taking advantage of too high an input power
However, in this case, the increase in power comes at the expense of device durability, which is naturally unacceptable
Therefore, the problem is that, for one reason or another, too high an input power can be supplied to the crushing plant

Method used

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  • Rock breaking device, protection valve and a method of operating a rock breaking device
  • Rock breaking device, protection valve and a method of operating a rock breaking device
  • Rock breaking device, protection valve and a method of operating a rock breaking device

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Embodiment Construction

[0022] In Fig. 1, a breaker 1 is arranged at the free end of a boom 3 of a working machine 2, eg an excavator. Alternatively, the breaker 1 may be arranged in any mobile working machine 2 or eg on a boom mounted on a fixed base. The breaking hammer 1 comprises an impact device 4 capable of generating impact pulses. While the impact is given by the impact device 4 to the tool 6 connected to the hammer 1 , the hammer 1 is pressed by the boom 3 towards the material 5 to be broken, so that the tool 6 transmits the impact to the material 5 to be broken. The percussion device 4 may be hydraulic, in which case it is connected to the hydraulic system of the working machine 2 by means of at least one inlet channel 7 and at least one outlet channel 8 . Can use can. The impact element moving back and forth in the impact device 4 generates impact pulses, as described in FIGS. 2 and 3 , or alternatively, in any other way. Furthermore, the breaking hammer 1 may comprise a protective hous...

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Abstract

The present invention relates to a hydraulic rock breaking device, a protection valve and a method of operating a hydraulic rock breaking device. The rock breaking device comprises a percussion device to which pressure fluid is fed along an inlet channel. The inlet channel is provided with a protection valve arranged to monitor the volume flow of pressure fluid flowing through it. If the flow is larger than what has been preset, the protection valve closes, at least partly, the connection through it, protecting thus the percussion device against too high an input power. The protection valve comprises a throttle which generates a pressure difference the magnitude of which is dependent on the fed volume flow. Information on the pressure difference is utilized in controlling the protection valve.

Description

technical field [0001] The invention relates to hydraulic rock-breaking equipment provided with impact equipment. With an impact device, impact pulses can be given to a tool connected to the rock breaking device, which tool further transmits the impact pulses to the material to be broken. Furthermore, the invention relates to a protection valve that can be arranged in the inlet channel of a hydraulic percussion device that is part of a rock breaking device. In addition, the invention relates to a method of operating such rock breaking equipment. [0002] The objects of the invention are defined in more detail in the preambles of the independent claims of the present application. Background technique [0003] A breaker is used as an auxiliary to an excavator or another work machine when it is desired to break eg rock, concrete or other harder materials. The breaking hammer comprises an impact device with which an impact can be imparted to a tool attached to the breaking ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F5/30E02F9/20
CPCF15B2211/40E02F9/2217E02F9/221F15B1/024F15B21/12E02F3/966B25D9/145F15B13/024F15B13/0405F16K17/082B25D9/00F15B2211/428Y10T137/86767Y10T137/8667Y10T137/86775E21B1/26B25D9/26E21B7/022E21B44/00F15B20/00F16K17/34
Inventor 埃斯科·尤沃宁
Owner SANDVIK MINING & CONSTR OY
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