A counterweight forklift truck is a lifting vehicle equipped with a lifting fork in the front of the body and a counterweight in the rear of the body. Forklifts are suitable for loading and unloading, stacking and moving into pieces in ports, stations and factories. Forklifts under 3 tons can also operate in cabins, train cars and containers. If the fork is replaced with a variety of forks, the forklift can carry a variety of goods, such as the bucket can carry loose materials. According to the lifting weight of forklifts, forklifts are divided into small tonnage (0.5t and 1t), medium tonnage (2t and 3t) and large tonnage (5t and above).
The characteristics of counterbalanced heavy forklift include:
1. Strong universality has been applied in various fields of logistics. If forklift trucks cooperate with pallets, its application range will be wider.
2. The double function forklift truck with loading, unloading and handling is an integrated equipment for loading, unloading and handling. It combines loading, unloading and handling into one operation and speeds up the efficiency of operation.
3. There is a strong flexibility of the wheel base of the forklift chassis is small, the turning radius of the forklift is small, the flexibility of the operation is enhanced, so in many machines and tools are difficult to use the narrow space can be used forklift.
Structure composition of balanced heavy forklift truck:
1. The power device for forklift as the power device of the internal combustion engine and battery. For noise and air pollution requirements are more stringent occasions should use battery as power, such as the use of internal combustion engine should be equipped with a muffler and exhaust gas purification device.
2. The transmission device is used to transfer the prime power to the driving wheel. There are 3 kinds of mechanical, hydraulic and hydraulic. The mechanical transmission device consists of a clutch, a gearbox and a drive axle. The hydraulic transmission device is composed of hydraulic torque converter, power shift gearbox and drive axle.
The hydraulic transmission device is composed of hydraulic pump, valve and hydraulic motor.
3. The steering device is used to control the driving direction of the forklift truck, which is composed of steering gear, steering rod and steering wheel. Forklifts below 1 ton use mechanical steering gear, and forklifts above 1 ton mostly use power steering gear. The forklift steering wheel is at the rear of the vehicle body.
4.The working device to lift the cargo mechanism. It is composed of inner door frame, outer door frame, cargo fork frame, cargo fork, sprocket, chain, lifting cylinder and tilting cylinder. The lower end of the outer door frame is connected to the frame, and the middle part is hinged with the tilt cylinder. Due to the expansion of the tilt cylinder, the door frame can tilt back and forth, so that the cargo forklift and cargo handling process is stable. The inner door frame is equipped with a roller, which is embedded in the outer door frame. When the inner door frame rises, it can partially extend out of the outer door frame. The bottom of the lifting cylinder is fixed at the lower part of the outer door frame, and the piston rod of the cylinder moves up and down along the guide rod of the inner door frame. The top of the piston rod is equipped with a sprocket, one end of the lifting chain is fixed on the outer door frame, and the other end is connected with the cargo fork frame around the sprocket. When the top of the piston rod is lifted with the sprocket, the chain lifts the fork and the fork holder together. At the beginning of lifting, only the cargo fork is lifted until the piston rod pushes against the inner door frame to drive the inner door frame to rise. The rising speed of the inner door frame is half that of the cargo fork. The maximum height at which the cargo fork can be lifted when the inner door frame is not moving is called the free lift height. The general free lifting height is about 3000 mm. In order to make the driver have a better view, the lifting cylinder is changed to two wide view gantry arranged on both sides of the gantry.
5. Hydraulic system is a device that provides power for fork lifting and door frame tilting. It is composed of oil pump, multi-way reversing valve and pipeline.
6. Brake device The brake of forklift truck is arranged on the driving wheel. The main parameters that indicate the performance of forklift trucks are the standard lifting height and the rated lifting weight at the standard distance between load centers. The load center distance is the distance between the center of gravity of the cargo and the front wall of the vertical section of the cargo fork.
Development direction of balanced heavy forklift truck.
Improve the reliability of forklift, reduce the failure rate, improve the actual service life of forklift. Through the study of ergonomics, the position of various control handle, steering wheel and driver seat is more reasonable, so that the driver vision is broad, comfortable, not easy to fatigue. Adopt low noise, low exhaust gas pollution, low fuel consumption engine, or take noise reduction and exhaust gas purification measures to reduce environmental pollution. Develop new varieties, develop variant forklifts and various new fittings to expand the range of forklifts.
Post time: Oct-18-2022