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Excavating Machinery Preventive Measures

AKW GROUP | Updated: Oct 18, 2017

The excavating machinery is to excavate the material that is higher or lower than the bearing machine, and load the conveyance or unloading the earth machinery. The excavated materials are mainly soil, coal, sand and rock and ore after prerelease. The excavating machinery is divided into single bucket excavator and multi-bucket excavator.

The earliest excavators were powered by human or animal power, which was used to dredge mud dregs deep under the river, and the bucket capacity was generally not more than 0.2 ~ o. 3 m & sup3. 1833 ~ 1833, the American people Otis design and manufacture of the first steam engine drive, iron wood composite structures, semi-rotary, rail line of single bucket excavator, 35 meters for productivity, but not due to poor economy applications.


The mining machinery is generally composed of power plant, transmission device, walking device and working device. Single bucket excavators and bucket wheel excavators and turntable, multi-bucket excavators and material conveying devices. The power plant has diesel engine, motor, diesel generator set or external power converter unit. Diesel engines and motors are mostly used for medium and small mining machines, and are driven by a primary motive, which can be interchangeable. Diesel generator sets and external power converter units are used for large and medium - sized mining machines and are driven by multiple motors. The walking device is mainly used to support the machine, to change the position of the machine and to transfer the field; In addition, bucket excavators and ring-wheel excavators can be used to cut the soil along with the walking equipment. The walking device has several kinds of crawler, wheel - type, walking, rail, float and drag. The track type is used when the ground is fixed and the ground is lower than the pressure. When the work site is changeable, the tyrotype is used; When special rails must be set up for special construction conditions, rail lines shall be used; To excavate the underwater soil and use the planktonic type; When the walking device of small single bucket excavator has no power source, it can be dragged. When the working site is fixed and the machine is heavy, use walking style. Most of the walking walking devices are used for large, medium and medium - sized shovel excavators and bucket wheel excavators in single bucket excavators.

Working device

Is the main component of hydraulic excavator working device, SY series excavator backhoe work device, it is mainly used for digging down below the surface soil, but also can mining maximum cutting height under soil, besides can dig a hole, furrowing, loading can also create a simple site work. Mining operations Ⅰ ~ Ⅳ level soil, adapted to the excavation Ⅴ magnitude with hydraulic hammer or blasting method. The anti-shovel working device is composed of movable arm, bucket rod, bucket, rocker, connecting rod, hydraulic pipeline and other main parts including movable arm oil cylinder, bucket rod oil cylinder and bucket oil cylinder

Power transmission route table

1. The power transmission line to walk: diesel engine, coupling, hydraulic pump (mechanical energy into hydraulic energy) - walking distributing valve, the central swivel joint, motor (hydraulic energy into mechanical energy) - reducer - driven chain wheel - rail track - walk 2 rotary motion transmission routes: diesel engine, coupling, hydraulic pump (mechanical energy into hydraulic energy) - distributing valve, rotary motor (hydraulic energy into mechanical energy) - reducer, slewing bearing, realize the rotary 3 movable arm movement transmission routes: diesel engine, coupling, hydraulic pump (mechanical energy into hydraulic energy) - distributing valve, movable arm oil cylinder (hydraulic energy into mechanical energy) - movable arm movement 4 bucket rod movement transmission routes: diesel engine, coupling, hydraulic pump (mechanical energy into hydraulic energy) - distributing valve - bucket rod oil cylinder (hydraulic energy into mechanical energy) - 5 bucket arm movement movement transmission routes: diesel engine, coupling, hydraulic pump (mechanical energy into hydraulic energy) - distributing valve - bucket cylinder (hydraulic energy into mechanical energy) - bucket movement

The composition and function of power system

Air intake system - net to hose, air filter and hose to the supercharger, hose to cold machine, hose to engine, exhaust system, supercharger, expansion joint to muffler, the exhaust pipe and cooling system, water tank hose to thermostat, water pump and diesel engine to hose, water tank, the throttle control system, stepping motor to speed reducer, the worm gear and worm drive - throttle pull - diesel engine throttle - high idle speed, low idle speed limit switch, fuel systems feed system: the fuel tank - rubber - hand pump to strainer, fine filter - > diesel oil return system: diesel engine to hose, fuel tank, oil return amount is bigger, use it for part of the cooling)

Preventive measures (1) strictly follow the operation rules and driving instructions, and avoid the "tooth" of gear shift to reduce the wear and tear of gear. (2) strictly implement the maintenance system and strengthen the maintenance of the gear shift. When the shift gear rod connection is not adjusted in time, ensure that the gear shift is in good performance. (3) pay attention to the repair and maintenance of self-locking mechanism, reduce or lose the action of the positioning performance of positioning steel ball, spring and fork shaft, shall promptly repair or replace, make the self-locking performance of self-locking mechanism is in good state. (4) when the gearbox is assembled, it shall be operated strictly according to the operating rules to ensure that the gearbox is adjusted properly and properly. When the road surface of the larger slope, the driver should strictly follow the action of the lower slope to conduct the operation, must not infraction.