Quy650 hydraulic crawler crane is a new product launched by our company in 2009 for the market demand. The development of this tonnage product further widens the tonnage grade of domestic hydraulic crawler crane series products. The scheme is provided for the refinement of the selection of large hoisting engineering equipment. This product is mainly used in large-scale object hoisting and wind power installation projects.

The main features are as follows

1、 Safety device

Hook upper limit and boom anti tilt device

The hook and arm frame anti roll device is used to prevent machine damage or backward turning accidents caused by over winding.

Hook upper limit device

When the lifting hook is raised to a certain height, the weight is lifted, the microswitch is reset by spring, the switch contact is disconnected, the control relay coil is cut off, the relay contact is disconnected, so that the buzzer alarms and the alarm indicator light flashes. At the same time, the controller locks the lifting of the lifting hook, and the lifting action of the lifting hook stops automatically.

Boom anti tilt device

The upper arm angle display is detected by the angle sensor of the moment limiter. The control signal is sent out by the moment limiter and the arm frame anti tilt simultaneously, and the effective principle of who first and who is adopted is adopted.

a. When the main arm is hoisted

When the main arm is ≥ upper limit position angle 85 ° When the moment limiter is in sound and light, it will alarm continuously and output the limit signal to PLC. At the same time, the main arm 85 ° Upper limit switch operates, and output limit signal to PLC; PLC outputs control signal, controls the main luffing winch to stop action, and locks the main arm to stop the boom lifting.

b. Tower type operation

When the tower type main arm is ≥ upper limit position angle 85 ° When the moment limiter is in sound and light, it will alarm continuously and output the limit signal to PLC. At the same time, the main arm 85 ° Upper limit switch operates, and output limit signal to PLC; PLC outputs control signal, controls the stop action of main luffing winch, and locks the tower type main arm to stop the boom lifting.

When tower arm = upper limit angle 72 ° When the moment limiter is in sound and light, it will alarm continuously and output the limit signal to PLC. Simultaneously, the main arm 72 ° Limit signal of upper limit switch action output to PLC; PLC outputs control signal, control tower luffing winch stops operation, and locking tower arm stops lifting.

c. When the working condition is over started

When the main arm is ≥ 85 ° When the moment limiter is in sound and light, it will alarm continuously and output the limit signal to PLC. At the same time, the main arm 85 ° Upper limit switch operates, and output limit signal to PLC; PLC outputs control signal, controls the stop action of main luffing winch and super lift winch, and locks the main boom to stop lifting.

When the mast is over raised, it is ≥ 128 ° When the moment limiter is in continuous sound and light alarm, the output limit signal is sent to PLC, and the mast 128 is lifted at the same time ° Upper limit switch operates, and output limit signal to PLC; PLC outputs control signal, and controls the stop action of main luffing winch to lock the boom of super crane.

Moment limiter

The limiter monitors the crane operation in real time, and sets the working condition parameters by pressing the key under various working conditions.

When 0% of rated lifting torque is less than 90% of rated lifting torque, the bar code of moment percentage will be on on the display screen of torque limiter, and the limiter will not give an audible alarm.

When 90% of rated lifting torque is less than of rated lifting torque, the moment percentage barcode yellow warning is displayed on the torque limiter display screen, and the limiter gives intermittent alarm

When of rated lifting torque is less than 105% of rated lifting torque, the moment percentage bar code red alarm is displayed on the torque limiter display screen, and the limiter sends out continuous alarm.

When the lifting moment is ≥ 105% of the rated lifting torque, the moment percentage bar code red alarm is displayed on the torque limiter display, and the limiter sends out continuous alarm, and outputs signals at the same time, the main and secondary hooks stop lifting, and the main arm and tower arm stop the increase action.

Load rate indicator

In order to facilitate the field personnel to understand the mechanical load situation, the three color load rate indicator light with the same traffic signal is adopted. Meanwhile, the walkie talkie for the driver and the hoisting commander is equipped.

Anemometer

Anemometer - the wind speed sensor at the top of the main boom is used to detect the wind speed, and the moment limiter displays the wind speed.

Brake and locking device

Brake: the crane is equipped with main and secondary drum brakes, main and auxiliary luffing drum brakes and rotary brakes.

Tension sensor

A tension sensor is installed on the main arm, tower arm and super boom pull pipe to detect the tension. The lifting load is calculated and displayed by the moment limiter.

Angle sensors are installed on the main arm, tower arm, super boom root, main arm and tower arm head to detect the angle of main arm, tower arm and super boom and the concave of boom.

level

The device is used to detect the angle between the body and the horizontal ground. It is used to ensure that the working ground of the machine meets the requirements

Over discharge protection of drum (three turns and half protection)

The main and secondary drums are respectively equipped with three circle and half protection devices to avoid over discharge during the winding

Rotary and walking alarm

The buzzer gives an alarm.

Strong > 2. Structural parts

1. Upper part of vehicle body

engine

Cummins 6-cylinder water-cooled qsx15 diesel engine,

The power is 418kw, and the rated speed is 1800rpm,

It meets the emission standard of tier3/stage III.

The engine is equipped with air pre filter, double stage air filter, muffler, composite cooler, radiator and fan, and other Cummins engine accessories.

The transfer case provides power to each system through 5 variable displacement plunger pumps and 2 gear pump power systems.

Four 12 volt maintenance free batteries, 24 volt system and 75 amp alternator.

A 740 litre diesel oil tank is installed in the power station of turntable, and there is oil level indicator in the cab.

Lifting winch

There are 2 lifting winch devices normally configured, namely, the main lifting winch and the auxiliary lifting winch device. Auxiliary lifting winch is selected.

The fence type drum is designed, which is powered by variable hydraulic motor through closed oil bath planetary reducer and driven independently. The internal reducer makes the hoisting device compact and convenient for disassembly and assembly. The winch is equipped with wet disc normally closed brake.

Lifting device

Drum diameter: 650mm

Maximum rope speed: 0-130m / min

Diameter of wire rope: 28mm

Length of steel wire rope: 1170m

Luffing winch

The fence type drum is designed, which is powered by variable hydraulic motor through closed oil bath planetary reducer and driven independently. The internal reducer makes the hoisting device compact and convenient for disassembly and assembly. The winch is equipped with wet disc normally closed brake.

Main luffing device

Drum diameter: 650mm

Maximum rope speed: 0-45m / min 2

Diameter of wire rope: 28mm

Length of steel wire rope: 700M

Auxiliary luffing device

Drum diameter: 650mm

Maximum rope speed: 0-120m / min

Diameter of wire rope: 28mm

Length of steel wire rope: 1000M

Over lifting and luffing device

Drum diameter: 650mm

Maximum rope speed: 0-120m / min

Diameter of wire rope: 28mm

Length of steel wire rope: 1040m

Rotary system

The rotating part adopts closed hydraulic system, and two motors provide power through sealed oil bath planetary reducer, which can rotate 360 degrees. The slewing bearing is a three row roller rotary roller roller roller with a diameter of 3.37 m, and the rotation speed is 0-1.1rm.

Counterweight

Weight of vehicle: 65 tons, 6 counterweights, 2 pallets

Rear counterweight of main engine: side hanging weight, 190 tons, 18 counterweights, 2 pallets. Super lifting weight: 300 tons, 29 counterweights, 1 tray.

Drivers ' Room

Fully enclosed steel frame structure design, low noise indoor. Comfortable and spacious cab with windstop glass and air conditioning, top window, various display instruments and crane control devices, fire extinguisher, ventilation and CD machine, etc. Ergonomic driver's seat and handle. The cab can be raised by 20 degrees, increasing the operator's control field of view of boom. Cameras are installed to observe the operation of the winch, and the cab can be placed in front of the vehicle to reduce the transportation width.

2. Lower part of car body

The car body and two track devices are used to get off the vehicle. The car body and track frame are connected with power pins, and it is easy to install and dismantle.

car body

It is used to connect the rotary platform and crawler device, which is welded by high strength box type alloy steel, and has good bending and torsion resistance.

Track device

The crawler frame is made of high bending strength structural steel welded, and the track plate is made of high-strength cast steel after heat treatment. The left and right track devices are equipped with 17 roller which have been hardened by surface. There are 156 track shoes in the left and right track devices, the width of track plate is 1500mm, and the tension of track can be adjusted by cylinder, and the ideal tension can be achieved by adjusting the gasket.

drive

The driving mode is four drive, and the track is powered by four variable hydraulic motors through the sealed oil bath planetary gear reducer, and the hydraulic normally closed brake system with spring is installed. Each track is controlled by stepless speed, running stably, and the maximum travel speed is 0-1km/h, which can be independent or reverse. 3. Operation equipment

Boom combination

The boom is designed with imported high-strength steel pipe and spatial truss structure. It has the working conditions of heavy main arm, heavy and light mixed main boom, tower type, fixed jib, heavy main arm + over hoisting mast + over lifting counterweight, heavy main arm + Super boom, heavy light mixed main boom working condition + super lifting mast, heavy light mixed main boom working condition + Super lifting mast, Tower working condition + over lifting mast + over lifting counterweight and tower working condition + over hoisting mast.

Working condition of heavy boom (H)

Length of main arm: 24m-84m.

Main arm: 10.5m foundation arm, 12m and 6m main arm middle section, 12m

Reducer joint, 1.5m arm head.

Working condition of main boom + over hoisting mast + over lifting weight (HSD)

Length of main arm: 36m-108m.

Super lift device: the super lift mast is 30m, including 5.5m foundation arm, 12m and 6m middle section, and 6.5m upper arm; The counterweight of the crane is 0-300t.

Working condition of main boom + over hoisting mast (HS)

Length of main arm: 36m-84m.

Super lift device: the super lift mast is 30m, including 5.5m foundation arm, 12m and 6m middle section, and 6.5m upper arm.

Working condition of heavy light mixing main arm (h/l)

Length of main arm: 66m-102m.

Main arm: 10.5m foundation arm, 12m and 6m main arm middle section, 12m reducer joint, 12m and 6m tower arm middle section and 7.5m tower arm upper arm.

Heavy light mixed main boom working condition + over hoisting mast + over lifting weight (hsd/l)

Length of main arm: 90m-138m.

Over lifting device: over lifting mast 30m, super lifting weight 0-300t.

Heavy light mixed main boom working condition + over hoisting mast (hs/l)

Length of main arm: 90m-138m.

Over lifting device: over lift mast 30m.

Tower type working condition (HT)

Length of main arm: 30m-66m; Tower arm length: 24m-84m.

Main arm: 10.5m foundation arm, 12m and 6m main arm middle section, 12m reducer joint, 1.5m arm head.

Tower arm: basic arm 4.5m, 12m and 6m tower arm middle section and 7.5m tower arm upper section arm.

Tower working condition + over hoisting mast + over lifting weight (HTSD)

Length of main arm: 36m-108m; Tower arm length: 24m-96m. Over lifting device: over lifting mast 30m, super lifting weight 0-300t.

Tower working condition + over lift mast (HTS)

Length of main arm: 36m-108m; Tower arm length: 24m-96m. Super lift device: over lift mast 30 m.

Fixed jib working condition (HF)

Length of main arm: 72m-102m; Fixed jib length: 12m.

Working condition symbol

吊钩

注：一个650t双滑轮组吊钩可以转换为325t单滑轮组吊钩