Caterpillar band drilling machine hydraulic system with adjustable load
A hydraulic system and drilling rig technology, which is applied to tracked vehicles, motor vehicles, mechanical equipment, etc., can solve the problems that the engine is not enough to drive the drill pipe, the required power varies greatly, and the working efficiency of the hydraulic system is low. The effect of safe and reliable work, improved efficiency and improved reliability
Active Publication Date: 2017-05-31
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology
Due to the complexity of the coal seam in the borehole and the frequent and severe changes in the load, it often causes large and rapid pressure fluctuations in the rotary circuit and the feed circuit in the hydraulic system, and the required power also changes for drilling operations at different depths. Larger, so that the working efficiency of the hydraulic system is low, especially when the crawler drilling rig needs to salvage the drill pipe in case of an accident in the hole, the engine capacity is likely to be insufficient to drive the drill pipe at this time
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Embodiment Construction
[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0017] reference figure 1 The hydraulic system of the crawler drilling rig with adjustable load according to the present invention includes a first motor 1, a second motor 19, a first variable pump 2, a second variable pump 20, an oil tank, a first differential pressure reducing valve 3, a second The fixed differential pressure reducing valve 4, the third fixed differential pressure reducing valve 5, the fourth fixed differential pressure reducing valve 6, the first slewing motor 11 and the second slewing motor 18 used to drive the upper drill rod of the crawler drill to rotate. The first feed cylinder 12 and the second feed cylinder 17 that drive the drill rod on the crawler drilling rig to feed and pull up the movement, the walking motor 13 for driving the crawler drill forward and backward, and the adjustment position of the crawler drill. Engine regulating ...
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The invention discloses a caterpillar band drilling machine hydraulic system with an adjustable load. The caterpillar band drilling machine hydraulic system comprises a first motor, a second motor, a first variable pump, a second variable pump, an oil tank, a first fixed-difference pressure reducing valve, a second fixed-difference pressure reducing valve, a third fixed-difference pressure reducing valve, a fourth fixed-difference pressure reducing valve, a first rotation motor, a second rotation motor, a first feeding oil cylinder, a second feeding oil cylinder, a walking motor and a whole machine adjusting oil cylinder. The first rotation motor and the second rotation motor are used for driving a drilling rod on a caterpillar band drilling machine to do the rotation movement. The first feeding oil cylinder and the second feeding oil cylinder are used for driving the drilling rod on the caterpillar band drilling machine to do the feeding and pull-up movement. The walking motor is used for driving the caterpillar band drilling machine to advance and retreat. The whole machine adjusting oil cylinder is used for driving the caterpillar band drilling machine to adjust the position. The system is high in work efficiency, and the requirements under the work condition that hole interior accidents occur or the load is rapidly increased can be met.
Description
Technical field [0001] The invention belongs to the technical field of crawler drilling rigs, and relates to a hydraulic system of a crawler drilling rig with adjustable load. Background technique [0002] Crawler drilling rig is a special equipment for gas drainage drilling construction. It is mainly powered by a hydraulic pump station and uses mineral oil as the working medium to drive the drilling tool to complete the required actions by controlling the flow, pressure and direction of the working medium. The hydraulic drive system of the crawler drilling rig is mainly composed of two basic function circuits of rotation and feed and some other auxiliary function circuits. The slewing circuit is mainly used to overcome the load torque of the drilling tool and provide rotary power for the drilling tool, so its pressure is adapted to the change of the slewing load. The feed loop is mainly used to provide the feed and pull force for drilling, and combine the drilling technology t...
Claims
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IPC IPC(8): F15B11/17E21B7/02B62D55/00
CPCB62D55/00E21B7/02F15B11/17F15B2211/85F15B2211/875
Inventor 陈婵娟武欢
Owner SHAANXI UNIV OF SCI & TECH