Method for determining usage rate of breaking hammer, breaking hammer, and measuring device

A technology of measuring device and breaking hammer, which is applied in the field of determining the utilization rate of the breaking hammer and measuring device, and can solve the problems that the load cannot be taken into consideration.

Inactive Publication Date: 2012-09-12
SANDVIK MINING & CONSTR OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These loads cannot be taken into a...

Method used

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  • Method for determining usage rate of breaking hammer, breaking hammer, and measuring device
  • Method for determining usage rate of breaking hammer, breaking hammer, and measuring device
  • Method for determining usage rate of breaking hammer, breaking hammer, and measuring device

Examples

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Embodiment Construction

[0040] figure 1 A breaker 1 is shown arranged on the free end of a boom 3 in a working machine 2 such as an excavator. Alternatively, the boom 3 may be arranged on any movable carriage or fixed platform of the crushing plant. The breaking hammer 1 comprises an impact device 4 for generating impact pulses. The breaker 1 can be pressed against the material 5 to be crushed by means of the boom 3 and at the same time the impact device 4 can be used to generate an impact on the hammer head 6 connected to the breaker 1 , which transmits impact pulses to the material 5 to be crushed. The percussion device 4 can be hydraulic, whereby it can be connected to the hydraulic system of the working machine 2 via at least one supply flow channel 7 and at least one discharge flow channel 8 . The impact pulses can be generated in the impact device 4 by means of an impact element which is movable back and forth in the impact direction and in the return direction under the influence of the hydr...

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PUM

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Abstract

The invention relates to a method and measuring device for determining the usage rate of a breaking hammer, and to a rock breaking device. The measuring device (10) comprises a sensor (11) for measuring a physical phenomenon caused by the operation of the percussion device (4).The measuring results are processed, and they are used to determine the start and end times of the operation of the percussion device. By means of a timing device (61), it is possible to determine the duration of an impact cycle (IC) which is added to a time counter (62).The durations of impact cycles added cumulatively to the time counter indicate the total percussion time of the breaking hammer. Impact pauses (IP) between impact cycles are also monitored, and pauses shorter than a predefined time limit (tstop2) are taken into account as part of the usage rate.

Description

technical field [0001] The invention relates to a method for determining the utilization rate of a breaking hammer. A breaking hammer comprises a percussion device, due to which a working cycle of the percussion device generates a percussion pulse, which can be transmitted to the material being processed by means of the hammer head in order to break it. Operation of the impact device induces a physical phenomenon that is measured by the sensor. By analyzing the measurement results, it is possible to identify the duty cycle of the impact device and to define a quantity representative of the usage of the impact device based on this duty cycle. The usage rate determined during operation of the impact device is cumulatively added to the counter and can be communicated to the operator of the breaking hammer. [0002] The invention further relates to a breaking hammer, the utilization rate of which is determined by means of a measuring device. The invention also relates to a meas...

Claims

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Application Information

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IPC IPC(8): E02F3/96G07C3/02B25D9/00B25D9/26
CPCB25D9/00B25D2250/221E02F3/966E02F9/2267E02F9/267G07C3/02G07C5/008G01M13/00G07C3/04B25D9/26E02F3/96
Inventor 米卡·奥克斯曼伊尔卡·莱姆斯韦尔塔
Owner SANDVIK MINING & CONSTR OY
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