HYDRAULIC BOOM CRAWLER 60T ZCT600V

Description

Main technical features

 High work efficiency The crane is capable of multiple compound movements. Single rope speed on the outmost layer of the hoisting winch 1 is 135 m/min.

 Optimization of transportation, assembly and dismantling The four counterweight plates, whose weight is 8 t, 8 t, 2 t and 2 t respectively, can be installed conveniently by a counterweight handler. The crawler carriers can be extended and retracted, and the maximum transport width of the crane is 3.3 m. 1.4.

Main boom and telescoping mechanism The box-shaped main boom consists of 5 U-type boom sections made of low-alloy high-strength steel plate, providing the boom with excellent bending-resistance capacity, super load bearing capacity, light deadweight, large lateral stiffness and low end deflection. The main boom head adopts a new plate-type structure with an imbedded sliding block, contributing to a larger connecting ratio between boom sections. A series of optimized design greatly decrease the deadweight of the boom and provide a more evenly distributed stress onto the boom to avoid partial distortion. Furthermore, the boom has good guidance quality and adjustability. The telescopic boom sections are telescoped in / out via two telescoping cylinders and two sets of boom extension / retraction rope. The telescoping cylinder I drives the telescopic boom section 2 to telescope in / out, while the telescoping cylinder II drives the telescopic boom section 3. The boom section 4 and 5 are telescoped in / out simultaneously together with the boom extension / retraction rope. This compact design makes the crane work reliably. Each cylinder is fitted with a balance valve. 1.5.

Jib The jib is consisted of two jib sections: one section is a square lattice section, while the other is a triangular lattice one secured parallel onto the first section through pins. There are two jib lengths, i.e. 7.5 m and 12.8 m. The jib section I is hinged to the head of the top boom section through pins. The jib can be installed at one of the three offsets onto the main boom, i.e. 0°, 15° and 30°. Change of the offsets is realized conveniently through a rotary shaft and sliding groove. 1.6.

Hoisting mechanism It consists of a main hoist mechanism and an auxiliary hoist mechanism. The two hoist mechanisms are driven by an axial plunger hydraulic motor with a built-in planetary gear reducer to lift or lower the hook. 5 / 11 A brake is fitted between the motor and reducer. The two winch mechanisms can be controlled independently and also can carry out simultaneous movements. The auxiliary hoist winch is of same model of the main winch, and both of them adopt a variable motor. The main winch is installed with an lower limit switch which gives alarm when there are only 3 wraps of wire rope left on the drum. The sealed-in planetary reducer is of a compact structure, light deadweight and high reliability. Specifications for high-tensile torsion resistant hoist rope: Diameter: φ17.0 mm Strength grade: 1870 N/mm2 Length of main hoist rope: 230 m Length of auxiliary hoist rope: 140 m 1.7.

Slewing mechanism Via the planetary gear reducer, the axial plunger hydraulic motor of constant displacement drives the pinion gear on the output shaft to rotate the toothed ring of the slewing bearing fixed on chassis frame, providing a 360° unlimited slewing range. The free swing function decreases lateral pulling force from a load to the boom.

 Slewing bearing Single-row ball, four-point contact, externally geared

 Slewing braking The crane is installed with a hydraulically controlled normally-closed brake, and is capable of conducting controllable free swing operation.

 Slewing speed The highest slewing speed is 2 rpm. 1.8.

Engine Engine model: Weichai power WP6G210E330 diesel engine Type: six-cylinder in-line, intercooling turbine diesel engine Displacement: 6.75L Rated power: 154 kW/2200rpm Max. torque: 860 N·m/1500rpm Fuel tank capacity: 570L 6 / 11 1.9.

Hydraulic system The crane adopts a series-connected hydraulic system with hydraulic pilot proportional control. The high-speed hydraulic motor drives the planet reducer to realize movements of the mechanisms. The system has such advantages as high efficiency, energy-saving, smooth and safe simultaneous movements. The oil cooler for hydraulic system: a radiator driven by high-power hydraulic motor, 40 kW Hydraulic oil tank capacity: 770 L 1.10.

Electrical system 24 Volt DC, negative ground, two batteries of 200AH each. The electrical system of the crane includes the power supply, engine start, engine shutdown, indicator lights, warning devices, illumination devices, fan, wiper, horn, hoisting limiter, hydraulic oil cooling fan, concentrated display panel, load moment limiter, safety devices etc. which not only ensure safe operation of the crane but also provide a good working environment.