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    These structures of rotary drilling rigs: how many do you know? ---Shishi rotary drilling rig accessories

    * : * : admin * : 2021-11-15 15:22:17 * : 22
    These structures of rotary drilling rigs: how many do you know? ---Shishi rotary drilling rig accessories

    Rotary drilling rig is a kind of construction machinery for taking soil to make holes and filling piles, --- Shishi rotary drilling rig accessories

    The application is very wide.

    Rotary drilling rig that has been used for so long

    In fact, for rotary drilling rigs

    How much do you know?

    What are its main components?

    Do you know it again?

    Main components of rotary drilling rig

    1

    Drill pipes, drilling tools

    Drill rods and drill tools are a key component, which are divided into internal friction type externally pressurized telescopic drill rods and automatic internally interlocked externally pressurized telescopic drill rods. The internal friction type drill pipe has high drilling efficiency in soft soil layers. The lock type drill pipe increases the downforce that the power head applies to the drill pipe and is transmitted to the drill tool. It is suitable for drilling in hard rock formations and has higher requirements for operation. high. In order to improve work efficiency, a drilling rig is mostly equipped with two sets of drill rods. There are many types of rotary drilling rig bits. At present, there are long spiral and large diameter short spiral drill bits, rotary drill buckets, sand buckets, cylindrical drill buckets, expanded bottom drill bits, core drill bits, etc. ---Shishi rotary drilling rig accessories

    2

    Power Head

    The power head is an important part of the drilling rig. Its function is to output torque. It is composed of a variable hydraulic motor, a planetary reducer, a power box and some auxiliary components. The power box slows down and increases torque. The power head has hydraulic transmission, electric motor transmission, and engine transmission. No matter what, it has the functions of low-speed drilling and high-speed reverse rotation. At present, most of them are driven by hydraulic pressure, with dual-variable hydraulic motor, two-speed reducer drive or low-speed high-torque hydraulic motor drive. The drilling speed of the power head generally has multiple gears, which is suitable for operation under a variety of working conditions.

    3

    hoist

    As an important part of the rotary drilling rig, the hoist includes the main hoist and the auxiliary hoist. The main winch is used for lifting and lowering the drill pipe, and the auxiliary winch is used for auxiliary work. In the working process, the main valve provides hydraulic oil for the hoisting hydraulic motor, and the main valve changes direction to realize the left-right rotation of the hoisting hydraulic motor, thereby lifting the drill pipe and the drilling tool for ascending and descending actions.

    The main hoist is an important component of the drilling rig. Its function is to lift or lower the drill pipe. It is composed of hydraulic motor, planetary reducer, brake, reel and steel wire rope. Working principle: The main reel motor is driven by the hydraulic pump output high-pressure oil, and the oil is turned on at the same time Road and mechanical braking, through the reducer to increase the torque, drive the reel to rotate to raise or lower the main reel. The main winch has a close relationship with the drilling efficiency, the probability of drilling accidents, and the length of the wire rope life. The Italian IMT (Italian horse) rotary excavator has drill rod contact protection to prevent the rope from damaging the wire rope. In particular, the rotary drilling rig of Italy Matt Co., the main hoist drum capacity is large, the wire rope is arranged in a single layer winding, the lifting force is constant, the wire rope is not overlapped and rolled, thereby reducing the wear between the wire ropes and extending the use of the wire rope life. The main hoist of foreign rotary drilling rigs uses non-rotating wire rope with better flexibility to increase the service life. ---Shishi rotary drilling rig accessories

    4

    Pressurizing device

    The function of the pressurizing device: apply pressure to the power head, and the pressure is transmitted by the pressurizing device → power head → drill pipe → drill bit → tooth tip to achieve the purpose of cutting, crushing or grinding. There are two types of pressurization: cylinder pressurization, hoist pressurization cylinder pressurization: the pressurization cylinder is fixed on the mast, and the piston of the pressurization cylinder is connected to the slide frame of the power head. The working principle is provided by the auxiliary hydraulic pump of the drilling rig to provide high-pressure oil. Enter the rodless cavity of the oil cylinder and push the piston of the oil cylinder to apply pressure to the power head. When it stops, the single balance valve will lock the oil to prevent the power head from sliding down. Advantages: simple structure and convenient maintenance.

    Hoisting pressure: Install a hoisting assembly on the mast, and wind two steel wire ropes opposite to each other on the reel, one for pressure and the other for lifting, which are connected to the movable pulley of the power head through the fixed pulley on the mast, and then fixed separately On the lower mast and upper mast, lifting or pressurizing conditions can be realized. Advantages: greater pressure can be achieved by moving pulleys, and long spiral construction methods can be realized. Disadvantages: the structure is a bit complicated, assembly and disassembly are troublesome, and additional precautions are added during operation. Regardless of whether it is a pressurized oil cylinder or a hoist pressurization, it is a pressurized working condition, but the pressurization form is different. ---Shishi rotary drilling rig accessories

    5

    Chassis

    The chassis of the rotary excavator can be divided into a special chassis, a crawler hydraulic excavator chassis, a crawler crane chassis, a walking chassis, and a car chassis. But the track
    With chassis, compact structure, convenient transportation, beautiful appearance and high cost. At present, most of the rotary excavators produced at home and abroad use special chassis.

    Rotary excavator chassis parts mainly include four wheels: four wheels refer to supporting wheels, driving wheels, guide wheels, and towing sprocket wheels; one belt refers to crawlers.

    Guide wheel: plays the role of guiding the track, located at the end opposite to the driving force. Usually there are 2 for each rotary excavator.

    Drag sprocket: to hold up the crawler, according to the tonnage of the rotary excavator. Usually there will be 1-2 on one side.

    Support roller: As the name implies, it plays a supporting role and is located between the lower surface of the left/right beam of the underframe and the crawler. It varies according to the tonnage of the excavator. Usually there are 5-10 per side. ---Shishi rotary drilling rig accessories

    Driving wheel: Acts as a driving track, fixed on the walking motor, and transmits the driving force of the walking motor to the crawler through a gear structure. Usually there is one on each travel motor.

    Rotary excavator chassis parts: guide wheels, supporting wheels, supporting wheels, driving teeth, chains, chain links, chain pins, bucket shafts, four wheels and one belt, chain rail assembly, guide wheel brackets, slewing bearings, crawlers, rubber Track, track assembly, track shoe, tension device, tension cylinder seat, tension cylinder, universal cross shaft, chain plate screw, large spring, chain plate, chain link, chain guard, bottom guard plate.

    22 safety precautions for rotary drilling rigs, useful for collection!

    1. Before any maintenance, maintenance and repair of the drilling rig, warning signs or similar signs indicating "No engine should be started" must be hung on the start switch, joystick and operation panel of the machine to warn the operator. ---Shishi rotary drilling rig accessories

    2. Make sure that all the protective facilities of the drilling rig, such as the hood, cover plate, and protective cover, are installed on the machine and fixed in place.

    3. The location of high-voltage lines and cables buried underground should be known. If the machine comes into contact with these dangerous objects, the electric shock will cause serious casualties.

    4. Know the width of your device so that you can maintain a proper distance between the device and nearby fences or boundary obstacles during operation.

    5. Do not wear thin, loose-fitting clothing, and do not wear jewelry that may be hung on the control handle or other parts of the rig. They may hang on the joystick or other parts of the machine. ---Shishi rotary drilling rig accessories

    6. Secure all loose things, such as lunch boxes, tools, and other things that are not part of the machine.

    7. Familiar with applicable site command gestures and know who issued them. Only accept command gestures from one person.

    8. According to the needs of working conditions, wear a helmet, protective glasses and other protective equipment. Wear helmets, goggles and safety overalls that are suitable for your job.

    9. Keep the machine free of debris. Remove all obstacles on the drilling rig, especially the rotary platform, ladder and stepping board, such as rubble, grease, tools and other objects that are not part of the machine. ---Shishi rotary drilling rig accessories

    10. Rotary drilling rigs are specially equipped with anti-rotation lock pins to prevent accidents caused by the rotation of the rotary platform during shipment. Before shipping, make sure that the lock pin is correctly inserted into the slot and locked in place.

    11. If any repairs are needed, the person responsible for maintenance must be notified in time.

    12. The person who is not responsible for the rotary excavator is not allowed to enter the drilling rig cab without permission.

    13. Dispose of all waste liquids in accordance with local regulations.

    14. Be careful to prevent fire when using various cleaning fluids.

    15. Unless otherwise specified, place the equipment in the maintenance position before performing maintenance.

    16. When not in use, the rotary excavator should be placed on a flat level ground. All controllers must be placed in the "stop" state. The hydraulic control lever must be placed in the "off" position to ensure that the engine is turned off. Remove the key from the start switch. Turn off the main power switch. ---Shishi rotary drilling rig accessories

    17. When servicing the air conditioner, smoking is not allowed. Smoking is not allowed in places where there may be refrigerant gas. Inhalation of the smoke produced by the contact between the refrigerant and the flame can cause personal injury or even death. Inhalation of refrigerant gas through smoking can also cause personal injury or death.

    18. Safety regulations must be followed to maintain the rig.

    19. The grease in the cylinder of the track tensioner is under great pressure. The oil overflowing from the safety valve under high pressure can adhere to the skin, causing serious or even fatal injuries. ---Shishi rotary drilling rig accessories

    20. If the cab door is locked, the front windshield and side windows can be used as second exits.

    twenty one. When lifting operations, the regulations on the carrying capacity of the equipment must be observed.

    twenty two. Do not put the drained liquid during maintenance in a glass container, but drain all the liquid into an appropriate container. ---Shishi rotary drilling rig accessories

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