Hydraulic rock drill measuring and controlling system
A technology of hydraulic rock drill and measurement and control system, which is applied to the automatic control system of drilling, drilling equipment, earthwork drilling and production, etc. It can solve the complicated and difficult problems of the stability of the working state of hydraulic rock drill, and achieve the improvement of rock drilling efficiency and working parameters. maintain a stable effect
Inactive Publication Date: 2017-08-18
GUILIN UNIV OF AEROSPACE TECH
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Problems solved by technology
Most of the existing hydraulic rock drill systems are not only complicated, but most of them are pure hydraulic systems composed of combined valves and pressure negative feedback control hydraulic control valves. It is difficult to maintain the stability of the hydraulic rock drill's working state for a long time
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[0020] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0021] As shown in the accompanying drawing 1, a measurement and control system for identifying the working state of a hydraulic rock drill according to the present invention includes a power mechanism, an actuator, an overflow valve, a rock drilling control valve group, and a measurement and control system; wherein:
[0022] The power mechanism includes two one-way pumps B1 and B2. The one-way pump B1 is driven by a motor M1 equipped with a frequency converter T. Adjust the frequency converter T to change the speed of the motor M1, thereby changing the displacement of the pump B1 to change the speed of the load. The identification result of the working state of the measurement and control system makes R feedback to control the frequency converter T; the one-way pump B2 is driven by the motor M2 to provide the required pressure oil.
[0023] The executive ...
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The invention discloses a hydraulic rock drill measuring and controlling system which comprises a power mechanism, an executing mechanism, an overflow valve, a rock drilling control valve and an electrical system. The power mechanism comprises a unidirectional pump for supplying oil to a hydraulic system. The executing mechanism comprises a propulsion hydraulic cylinder, a rock drilling machine and a rotary borer motor. The overflow valve comprises a guiding type proportional overflow valve body and an overflow valve body. The rock drilling machine control valve comprises a guiding type proportional pressure-reducing valve body, a high-speed on-off valve body, a guiding type solenoid directional valve body and a one-way valve body. The measuring and controlling system comprises four pressure sensors, three flow sensors, an amplifier, a datum acquisition machine card, a rock drilling state identification system and a controller. The working state of the hydraulic rock drilling machine is matched through the electrical system and compared with a corresponding normal rock-drilling state, and the errors of working parameters of the system are obtained and corrected. According to the hydraulic rock drill measuring and controlling system, real-time monitoring and control over the hydraulic rock drilling machine can be realized through the measuring and controlling system, so that the working state of the rock drilling machine is kept in the efficient rock drilling state in the process of rock-drilling propulsion.
Description
technical field [0001] The invention relates to the field of hydraulic measurement and control, in particular to a measurement and control system for identifying the working state of a hydraulic rock drill. Background technique [0002] Hydraulic rock drills are widely used in mining drilling, building construction, cement pavement, asphalt pavement and other fields. In order to achieve high efficiency and low cost, various hydraulic rock drill systems have been designed at home and abroad. Due to the harsh working environment and complex and changeable working conditions of the hydraulic rock drill, the stability of the working state of the hydraulic rock drill has a great influence on its working efficiency. Most of the existing hydraulic rock drill systems are not only complex but also mostly pure hydraulic systems composed of combined valves and pressure negative feedback control hydraulic control valves, which make it difficult to maintain the stability of the hydrauli...
Claims
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IPC IPC(8): E21B44/06
CPCE21B44/06
Inventor 刘忠高战伟李天明邹爱成秦展田
Owner GUILIN UNIV OF AEROSPACE TECH
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