Mining excavator loaders are mainly composed of the three major institutions of driving, excavation, and transportation, as well as the two major systems of hydraulic and electrical.Through the coordination and cooperation of each part, the actions prescribed by hydraulic, electrical execution components and mechanical transmission agencies are finally completed to complete each operation process.Let me introduce it in detail below!
What are the main points of the operation process
1. Operation when walking: connect the three -phase power supply; press the starter, the main oil pump action, the main motor starts to work, drives the gear pump to rotate, and the hydraulic oil starts to work from the pump from the pump to the valve.The reflux pipe flows back to the fuel tank through the hydraulic oil filter and the hydraulic oil radiator.Push to the right or pull the left hand handle to the left, and transport the groove oil cylinder movement through the multi -road conversion valve to make the shovel rising or decreased.
Push forward or pull back the second handle of the left hand, and rotate the hydraulic motor to drive the vehicle rotation through the multi -road conversion valve, so as to achieve the whole machine forward or backward;Essence
2. During the ore operation: the main operation method: big arm, big arm fall, right turn, arm turn, arm rotation, small arms, arms falling; use buckets, small arms, and big arms to pick up vermiculite into transportation into transportation into transportation into transportation into transportation into transportation into transportation.Inside the groove, the belt transport aircraft transports the vermiculite to the side unloading mining car or other mining equipment.
3. Working principle: Work by oil pump, manipulate the upper, fell, extension, backstand, reducing, rejuvenating, mining, and excavation through the multi -road valve handle.Controlling the rotating oil cylinder telescopic can make the big arm rotate left and right, and the two ends of the rotating oil cylinder are equipped with one -way throwing valve to control the speed of the rotation.Controlling the large arm oil cylinder telescopic can make the big arm move up and down, and the large arm oil cylinder has one end of the rod cavity with one -way throttle valve to control the speed of the large arm.Control the telescope of the small arm tank can make the small arm move back and forth.Control the scaling of the bucket oil cylinder can make the bucket excavation.The bucket is equipped with fighting teeth, which can be replaced after wear.
What are the main points of transportation and storage of coal mining machinery
1. The hanging transport loader of the factory uses highway transportation. The machine can be lifted directly on the trailer with a crane or driving.The front and rear tires should be matched with triangular pillow wood, and the tire of the loader is tied to a towing position in an appropriate position. It must be placed and tied firmly before the factory can be transported.
2. The hanging transport, undercut installation and precautions of the work surface of the mine can directly enter the operation according to the mine port; the straight well must be disassembled and lifted into the mine.The whole machine can be disassembled according to the four parts of the chassis, conveyor rack, adjustment rack, and excavation department. When disassembling the machine, the disassembly is marked in a certain order, and the disassembly hydraulic oil pipe joint is wrapped to prevent the dust from entering the dust.Several parts of the disassembly and parts are slowly hanging into the well with twisted buses, and then installed in the opposite order of the disassembly under the well. It must ensure that the positions of each component must be accurate and the connection must be firm and reliable.
3. The loader should be stored in places with rain -proof and sunscreen facilities. Storage of more than six months should be re -rust.
Maintenance and maintenance of coal mining machinery
(1) Class maintenance requirements
1. Check whether the cable and the connector are damaged, the magnetic starter and other electrical appliances and its connection lines are burned and loose, and repairs and replace them in time.2. Check the lubricating parts such as the universal axis, the rotation axis, and the bearing, and the lubricating oil and calcium -based oil should be added correctly (once in each class).3. Check the height of the oil surface of the hydraulic fuel tank, and refuel when it is insufficient.Check whether there are oil leakage at the connection between the oil pump, oil cylinder, distribution valve, oil pipe, etc.4. Check whether the oil pipes are bent and distorted to affect the smooth flow of the pipeline, whether there is a leak, and eliminate it in time.5. Check whether each connection component is loose and lost in the fastener, and it is tightly fastened in time.6. Clean up the whole machine, especially the removal of dust on the radiator.
(2) Monthly maintenance requirements
1. Check the fixed bolt of the oil pump.2. Check the sealing parts of each hydraulic component, especially if the "O" sealing ring of the oil cylinder piston rod is damaged, if any, it should be replaced in time.3. Clean the hydraulic oil filter and heat sink.4. Check the hydraulic fuel tank, clean up the oil, eliminate impurities, and add a hydraulic working oil.
(3) quarterly maintenance requirements
1. Clean the hydraulic system and check whether the hydraulic working oil is deteriorated, otherwise the new oil should be replaced.2. Check whether the pressure of the assignors safety valve changes.3. Check whether the sales and axis of each department are damaged.4. Check whether the installation bolt of the rotary mechanism and each part is loose.5. Replace the necessary damage parts.

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