The crank-type aerial work platform is a kind of aerial work platform. It consists of a folding arm and a telescopic arm. It can use its own power to walk a short distance between work sites or between sites. Tools, materials, etc. are lifted into the air through the work platform to be a special aerial work equipment that can be closer to obstacles for various installations, maintenance and other operations, and to complete multi-angle cleaning.
Component structure of crank arm aerial work platform
The overall structure of the crank-type aerial work platform is composed of a special chassis, a working arm frame, a three-dimensional full-rotation mechanism, a flexible clamping device, a hydraulic system, an electrical system and a safety device. The appearance of the whole machine is shown in the figure below.
Sketch of the structure of crank arm aerial work platform
Dedicated chassis. It is composed of engine, frame, walking mechanism, steering mechanism, etc.
working equipment. The working device is composed of rotary table, working arm frame, telescopic soft chain and so on.
Three-dimensional full-rotation mechanism. The installation position of the equipment or system is generally determined by the two parameters of elevation and direction.
Flexible clamping device. It is mainly composed of fixed arm, telescopic arm, clamping soft belt, rocker arm and clamping cylinder.
Electrical and hydraulic systems. The hydraulic system uses 1 variable plunger pump and 1 fixed gear pump to supply oil and is driven by the engine.
safety equipment. There is an electric emergency system for forcibly stopping various movements of the driving system and working devices in an emergency.
A detection device is provided below the lifting operation device to prevent the lifting mechanism from colliding with the boom mechanism during misoperation and causing damage. An anti-tilt sensor is installed on the chassis when the inclination of the body is >5. At this time, the sensor can emit an intermittent alarm sound through the buzzer. The amplitude limitation device can automatically detect the extension length and elevation angle of the boom, and limit the operation range to a safe range according to the preset data. When the maximum operation range is reached, the boom operation is automatically stopped.
Working principle of crank aerial work platform
The boom system of the crank aerial work platform is mainly composed of a crank arm structure, a telescopic arm structure and a flying arm structure, as shown in the following figure.
Boom system of crank arm aerial work platform
As shown in the following figure, the two parallelogram mechanisms of the crank aerial work platform are connected together by the lower hinge structure 7 and together with the connecting rod 5 and the luffing cylinder 8 form a crank arm structure. When the luffing cylinder 8 is extended, the connecting rod 4 makes an upward luffing movement relative to the hinge structure 7, and at the same time, driven by the parallelogram mechanism, the connecting rod 3 synchronously changes the amplitude and pulls the connecting rod 1 through the connecting rod 5, the connecting rod 1 and connecting rod 2 therefore make an upward amplitude movement relative to the turntable stand 6. Conversely, when the horn cylinder 8 is retracted, the connecting rods will all move in the opposite direction, that is, move downward.
Sketch of crank arm structure
Benefits of crank-type aerial work platform
The crank aerial work platform has better ductility and performance suitable for all work, and the crank truck has multi-directional positioning functions of upward, downward and spanning, which is suitable for hard-to-reach working spaces.
Precise positioning: The self-leveling platform can rotate 90 degrees to both sides. On different models, the short arm can make vertical movements from 130 degrees to 139 degrees. On the rotating arm, the 1.22 meter short arm can move 180 degrees horizontally to expand work range. The proportional controller allows you to control the speed of each function and make smooth and precise adjustments in crowded areas.
Reliable electric drive system: The crank aerial work platform is equipped with a DC drive system, which can be used in a construction environment that requires no noise and zero emissions.
Compared with the straight arm type, the crank arm type is more flexible, safer and more efficient, and can perform 360-degree continuous rotation without dead angle. Therefore, the crank arm type aerial work platform is used in the high-altitude sounding operation of special-shaped buildings. Advantage.
Is the crank aerial work platform special equipment?
Since the boom-type aerial work platform is a lifting appliance, according to the special definition of the special equipment safety law (for vertical lifting or vertical lifting and horizontal movement of heavy mechanical and electrical equipment, the load range is greater than or equal to 0.5 tons In view of the above, the load capacity of the crank aerial work platform is usually below 0.5 tons, so the crank aerial work platform is not a special equipment.
Boom type aerial work platform brand
The brands of crank aerial work platforms are divided into domestic and foreign brands. Here are some well-known brands:
Brand of domestic crank arm aerial work platform:
Dingli curved arm aerial work platform
Zhejiang Dingli is the leading domestic aerial work platform manufacturer and the only listed company in the industry. Its crank-type aerial work platform has three types: generator, battery and spider. There are 8 models. The maximum working height is from 15.6m-43m, and the 名媛直播 have passed CE certification.
Xingbang curved arm aerial work platform
Xingbang crank-type aerial work platform is divided into diesel-driven and electric-driven 6 types. The maximum working height is changed from 16m-46m, 15m-18m crank-type aerial work platform to floating cylinder, which is enhanced. The off-road performance of the machine walking; the crank-type aerial work platform of more than 18 meters is equipped with a Cummins electronic control engine for better performance.
Imported electric crank arm aerial work platform:
Gini crank arm aerial work platform
The Gini crank-type aerial work platform is divided into self-propelled and trailer-mounted, of which self-propelled is divided into two types of diesel drive and electric drive, which belong to the Z series. There are 20 models and the maximum working height is from 11m to 41m. The Z-series crank-type aerial work platform provides multi-directional positioning functions of upward, downward and spanning, as well as excellent extension functions. It is suitable for indoor and outdoor, even the construction site without power supply.
There are two models of trailer-mounted crank aerial work platforms, the maximum working height is from 12m-17m, and the DC/gasoline hybrid engine is used, which is suitable for high-performance application scenarios where driving speed, lifting speed and rough ground bearing capacity are very important.
As the top brand of aerial work platforms in the world, Gini's articulated aerial work platform has always been well received in the industry from product development, production to product quality control. It has a reliable quality assurance and its articulated aerial work platform is very stable and environmentally friendly. Silent, low emission, easy to operate, longer battery running time, lower maintenance cost, high precision, high value retention rate.
JLG crank arm aerial work platform
The Gini crank-type aerial work platform is divided into self-propelled and trailer-mounted, of which self-propelled is divided into two types of diesel drive and electric drive, which belong to the Z series. There are 20 models and the maximum working height is from 11m to 41m. The Z-series crank-type aerial work platform provides multi-directional positioning functions of upward, downward and spanning, as well as excellent extension functions. It is suitable for indoor and outdoor, even the construction site without power supply.
Matters needing attention in the operation of crank-type aerial work platform:
a. Wear a safety helmet and fasten a safety belt to ensure safe operation; b. Do not let the tired person operate the crank aerial work platform; c. Do a safety check before operating the crank aerial work platform to eliminate the hidden danger of the accident; d. The operation of the aerial work platform must have the aerial work platform operation certificate issued by the Labor Bureau, and operation without a license is strictly prohibited; e. Unrelated personnel shall not move the car at random to prevent accidental injury; f. No overload operation and the rated load shall be marked on the working platform; g. It is strictly forbidden to carry people, stop in the safety yellow line or stay away from the construction site after using it; h. After the crank working platform is used up, the key is taken out at the first time, and the doors and windows of the console are closed; i. The load of the working bucket of the crank aerial work platform should not exceed the specified load. The people and tools on the acting bucket should be evenly distributed to ensure the balance of the work force. Overloading operations are strictly prohibited.
