Characteristics, application scope, and operating procedures of hydraulic cranes

1、 Core Features

Operational flexibility and precision

Hydraulic transmission technology enables smooth extension, rotation, and load lifting actions of the crane arm, enabling 330 degree rotation (such as a 1.8-ton hydraulic crane) and multi-layer winding wire rope lifting, meeting the requirements of complex space operations.

The intelligent control system integrates high-precision sensors to monitor real-time data such as load position and hydraulic pressure. The operation interface is intuitive, and beginners can quickly master it.

Safety and reliability

The hydraulic system has strong sealing, reducing the risk of oil leakage, and is equipped with safety mechanisms such as limiters and overload protection devices to prevent overload or misoperation.

Load stabilization technology reduces the amplitude of load swing through hydraulic buffering devices to ensure a smooth lifting process. For example, the hydraulic cylinder of a 20 ton hydraulic crane with variable amplitude has a thrust of 373.4kN, which can stably carry heavy objects.

Efficient energy saving and environmental friendliness

The hydraulic system has high energy conversion efficiency, and the lifting mechanism adopts A2F63W2Z2 hydraulic motor to reduce energy consumption and lower operating noise (usually below 75 decibels), improving the working environment.

New energy power trend: Some models adopt electric or hybrid power systems to further reduce carbon emissions.

Structural adaptability and durability

Modular design supports rapid assembly and maintenance, and the boom often adopts a four section groove shaped box structure with high strength and light weight.

Key components such as the slewing bearing device with a diameter exceeding 2 meters and a ground pressure of less than 80kPa for tracked models, are suitable for complex terrains such as mines and swamps.

2、 Application scope

Industrial Manufacturing and Logistics

Lifting large equipment (such as machine tools and boilers), transporting raw materials (steel, concrete), and processing waste to improve production line efficiency.

Typical case: The QUY100 crawler hydraulic crane has a rated lifting capacity of 100 tons and is used for the installation of wind power equipment.

Construction field

Lifting building materials (steel bars, prefabricated components), installing curtain walls or steel structures, and maintaining high-rise buildings.

The micro hydraulic crane (with a self weight of ≤ 1.8 tons) adopts a folding arm design and is suitable for indoor narrow space operations.

Transportation and Rescue

Lifting accident vehicles, ships, or used for highway and railway rescue, earthquake relief. For example, a hydraulic crane can be inserted into a 30mm gap and lifted to a height of 250mm to quickly rescue trapped personnel.

Special scenario applications

Dealing with collapse and roof collapse accidents underground in coal mines: The hydraulic crane is made of high-strength aluminum magnesium alloy, which has the characteristics of low initial lifting height and lifting at any angle in space.

Fire protection field: equipped with high-pressure rubber hoses and quick couplings, which can quickly connect and lift fire extinguishing equipment.

3、 Operating procedures and safety standards

Pre operation inspection

Hydraulic system: Confirm that the oil is sufficient (the oil level is not lower than the scale line), there is no leakage, and the oil temperature is normal (40-60 ℃).

Mechanical components: Check for cracks or deformations in the boom, wire rope, and hook. The number of broken wires in the wire rope should not exceed the allowable value (such as 6 × 19+1 type wire rope with ≤ 12 broken wires).

Safety device: The limit device, brake system, and overload protection device are functioning properly during testing.

Standardization in homework

Load limit: It is strictly prohibited to exceed the rated lifting capacity (such as the maximum lifting capacity of Q2-8 hydraulic crane is 8 tons), and the center of gravity of the load must be perpendicular to the axis of the boom.

Leg operation: Lower the legs and ensure that the ground is flat and solid. For tracked models, adjust the tension of the tracks.

Signal communication: Follow unified command signals (such as gestures and flags), and maintain clear line of sight or communication between operators and commanders.

emergency response

Emergency stop: In the event of hydraulic system failure, loss of load control, or adverse weather conditions (wind speed>10m/s), immediately press the emergency stop button.

Accident report: After accidents such as overturning or falling objects occur, protect the scene and report to relevant departments, cooperate with investigation and analysis.

Maintenance and Care

Regular maintenance: Replace hydraulic oil every 500 working hours and check the wear of hydraulic pumps and motors.

Lubrication management: Regularly add lubricating grease (such as No.2 lithium grease) to the rotating bearings, variable amplitude hinge points, and other parts.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment