Derrick Crane / Weihua Crane

A derrick crane is a lifting device usually composed of mast (frame or tower) and lifting arm. There are three or four lines connecting the mast to the lifting arm, which controls it goes up and down. To lift a load, a separate line runs under the lifting arm with a hook as the hoisting mechanism.

derrick crane

Derrick cranes are docking facilities mounted on vessels or dockside. Recently, Weihua made a 660t derrick crane for Jiangsu Jinghu Heavy Industry, China. This crane is employed to lift 22,000m3 LPG tanks, which consists of platform/base, lifting arm and A-frame mast. It is designed with 2 hooks with capacity 2*330t. The arm length is 70m with luffing 21.5-54m, mast diameter is 1.6m.

Features:

1. There are 4 driving system for hoisting mechanism, 2 driving system for luffing mechanism.

2. The entire derrick crane chassis adopt basin support on concrete platform, which can effectively ease the crane horizontal and vertical deformation.

3. Multi-layer winding line reel drum. Hoisting winding drum wrapped with 4 layers of wire rope, and luffing drum is wrapped with 5 layers of wire rope.

4. Complete frequency, lifting half load speed is 2 times of the full load speed.

5. Using inverter, encoder and a series of electronic control system to ensure the 4 lifting motors keep synchronous running.

http://www.weihuacraneglobal.com/product/Derrick-Crane.html
Email: weihua@craneweihua.com

Weihua Bucket Wheel Stacker and Reclaimer for Thermoelectric Company

Name: bucket wheel stacker and reclaimer

Manufacturer: Henan Weihua Heavy Machinery Co., Ltd.

Work place: Jingneng Qinhuangdao Thermal Power Co., Ltd.

Duty: The core equipment of the power transmission line of the power plant, responsible for the storage and handling of coal-fired power plants.

bucket wheel stacker and reclaimer

Model: DQL1100/1500·30

Regular use: 1 set for working with 1 set backup or 2 sets working at the same time

Stacking capacity: 1500t/h

Reclaiming capacity: 300~1100t/h (adjustable frequency conversion)

Working coverage radius: 30m

Stacking height: 11m on the rail, 1.5m below the rail

Rotation angle: ±110°

Boom pitch angle: +10°~-13.9°

Features:

1. Multiple operation modes

Single action mode, manual mode, automatic mode and local mode can be switched freely according to different operation requirements without any interference effect;

2. Automatic controllable operation, real-time data feedback

The PLC main control device realizes the full automatic control of the stacker and reclaimer operation, collects the pile shape data through the instrument, and feeds the material storage condition in real time;

3. Three-dimensional anti-collision, accurate and reliable positioning

The three-dimensional anti-collision system is based on high-reliability and high-precision positioning system detection and attitude detection, and realizes anti-collision between equipment and material piles, equipment and equipment, equipment and devices along the track;

4. Timely warning, double security protection

Mechanical and inductive limit switches are set at each operating mechanism, and warning warnings and limit parking points are set in the program monitoring to establish double safety protection;

5. Two-line intelligent lubrication, reducing labor intensity

The whole equipment adopts electric centralized lubrication, which greatly reduces the labor intensity; the two-line intelligent centralized lubrication system is adopted, and the lubrication effects of the front and rear lines do not affect each other. The intelligent monitoring system can indicate the fault point and reduce the manual inspection intensity;

6. Versatile and cost-effective

It adopts the full-function double-tailed car layout to realize easy material stacking and reclaim function, multi-functional and cost-effective.

Coal handling line:

Stacking: coal transport by train → dumper system → coal pit → ground conveyor belt system → bucket wheel stacker and reclaimer → coal storage yard.

Reclaiming: coal storage yard→ bucket wheel stacker and reclaimer→ground conveyor belt system→coal storage bin→transport belt system→boiler.

Stacking and reclaiming:

Stacking: coal → ground belt conveyor → auxiliary tail car → main tail car → main tail car head hopper → boom belt conveyor guide trough → boom belt conveyor → coal storage yard.

Reclaiming: coal→ bucket wheel mechanism→ boom belt conveyor→ center drop hopper→ ground belt conveyor.

Weihua provide 2 sets of bucket wheel stacker and reclaimer for the 2×350,000 kW cogeneration project of Jingneng Qinhuangdao Development Zone, which is an important project for Qinhuangdao City.

http://www.weihuacraneglobal.com/case/Weihua-Bucket-Wheel-Stacker-and-Reclaimer-for-Thermoelectric-Company.html
Email: weihua@craneweihua.com

Ship-to-Shore Gantry Crane / Weihua Crane

Ship-to-shore gantry crane is called STS or QC, which is constituted by steel structure, lifting mechanism, pitching mechanism, tilting mechanism, crane traveling mechanism, trolley traveling mechanism, machine room, spreader, electrical equipment, necessary safety devices and other accessories.

Ship-to-shore gantry crane

According to the different trolley types, this ship to shore gantry crane can be divided into three kinds: traction crane, semi traction crane and self-propelled crane. PLC control system and CMMS malfunction detection system make it automatic malfunction detection and diagnosis.

There are sufficient communication and lighting facilities making it work safely and reliably. Anti-sway control system can be installed on the STS crane according to users' demand.

http://www.weihuacraneglobal.com/product/Ship-to-Shore-Gantry-Crane.html
Email: weihua@craneweihua.com

Marine Deck Crane / Weihua Crane

Marine deck crane is suitable for bulk carrier, container vessel, engineering ships which are voyaging international or domestic.

1. Built-in machine, electric, hydraulic, integrated system.

2. Fully hydraulic drive.

3. Self-diagnosis wave compensation system.

4. Luffing load horizontal movement technology.

5. Eight safety devices including torque limiter, etc.

6. Visible safety monitoring system.

deck crane

30t/36t Deck Crane Standard Speed:

30t/36t Deck Crane Fast Speed:

http://www.weihuacraneglobal.com/product/Marine-Deck-Crane.html
Email: weihua@craneweihua.com

Multi-Purpose Crane for Electrolytic Aluminum Plant

This video shows Weihua Multi-Purpose Crane (Email: weihua@craneweihua.com) test in Electrolytic Aluminum Plant. You can see the crust breaking, anode replacing, slag catching, Aluminum liquid siphon, etc.

http://www.weihuabridgecrane.com/product/Electrolytic-Aluminum-Crane.html

Sandwich Panel Crane | Overhead Crane

This product is a bridge crane used for sandwich panel manufacturing factory. The video shows the crane with the special use sandwich panel grab.

http://www.weihuabridgecrane.com/product/Sandwich-Panel-Crane.html
Email: weihua@craneweihua.com

Rail Mounted Container Gantry Crane / Weihua Crane

Rail mounted container gantry crane (RMG crane) is mainly used to load, unload, move and stack containers in railway transship fields and large container storage yards. It is constituted by main girder, rigid and flexible outriggers, trolley travel mechanism, lifting mechanism, crane travel mechanism, electric system and operation cab.

This rail mounted container gantry crane can be 3 kinds based on operating type in storage yards: whose girders outreach at the direction of the single outrigger is called single cantilever crane and at the direction of the double outrigger is called double cantilever crane, and whose girders do not outreach is called non-cantilever crane. Users can choose different types depending on the different demands of yards, storage and transport ways of containers and vehicles (trucks or railway vehicles). 

Features of Rail Mounted Container Gantry Crane:

1. Low lifting speed because of low lifting height. High crane traveling speed fits the requirement of the long-track containers storage yards' productivity. The spreader would go over the fourth/fifth container layer when the stack of containers is three/four layer and its lifting height depends on the requirements of storage yards 

2. The trolley traveling speed depends on the span and the outreaching distance of both sides of the bridge. In the case of the span and outreaching distance is short, smaller trolley traveling speed and the productivity is advisable; otherwise, the trolley traveling speed could be accordingly increased to meet productivity requirement.

3. When the span is over 40 meters, the crane mechanism travels in a high speed, and both sides of outriggers would deviate because of the drag on each side is different. So there is a stabilizer equipped on this crane and electric system would keep both sides of traveling mechanisms synchronous.

4. Electrical drive-control system adopts thyristor speed regulating drive AC or DC control system to meet the higher need and accomplish a better performance of speed regulating and control. Or it adopts conventional AC eddy current speed regulating control system and AC stator voltage and speed regulating drive control system.

An electric braking that equipped with thyristor speed regulating drive AC or DC control system or AC stator voltage and speed regulating drive control system is usually used as the electric control system of a high speed crane traveling mechanism. Conventional AC eddy current speed regulating drive control system which depends on the brakes to shut down traveling mechanisms should be avoided in order to prevent the huge impact to whole crane. 

http://www.weihuacraneglobal.com/product/Rail-Mounted-Container-Gantry-Crane--Rail-Mounted-Gantry-Crane.html
Email: weihua@craneweihua.com