Full analysis of the characteristics, application scope, and operating rules of electric winches

1、 Core characteristics of electric winch

Structural and performance advantages

Compact and efficient: adopting a single axis design (such as Wirth technology from Germany), eliminating complex chain transmission, reducing volume by 30%, and lowering costs by 25%.

Power technology upgrade:

Communication frequency conversion speed regulation: Achieving stepless speed regulation with a wide speed range (such as IRI winch speed ratio of 1:10 in the United States), improving drilling efficiency.

Feedback braking system: replaces traditional water brakes and electromagnetic eddy current brakes, expands the range of motor use, and improves safety.

Braking safety enhancement:

Disc brake technology: The hydraulic control disc brake has a sensitive response and a safe and reliable braking process (such as the IRI winch in the United States using this technology).

Dual braking system: The working brake and safety brake are linked to ensure quick shutdown in emergency situations.

Durability and Maintenance:

High strength materials: Components such as drums and gears are made of alloy steel, which increases wear resistance by 50%.

Modular design: facilitates quick replacement of vulnerable parts and reduces maintenance time by 40%.

Comparison of Technical Parameters

Parameters: Conventional models, large tonnage models

Rated load: 0.5T-350T 10T-5000T

Rope speed fast type: 30-130m/min Slow type: 7-13m/min

Roll form: single roll/double roll parallel double roll/front and rear double roll

Drive mode electric/hydraulic electric+hydraulic hybrid

2、 Application scenarios and industry coverage

Industrial and Construction Fields

Material handling: lifting heavy objects in factory, dock, power station and other scenarios (such as JD-1 dispatch winch with a maximum tension of 16KN and a rope capacity of 400m).

Equipment installation: Hoisting steel structures, glass curtain walls, etc. on construction sites (requiring the use of limiters and electrical control systems).

Mining and Metallurgical Industry

Mine lifting: dispatching mining cars, auxiliary traction (such as electric dispatching winches that support bidirectional operation and are compatible with 380/660V voltage).

Drilling operation: Suspend drilling equipment to support deep well operations (IRI winch drilling depth up to 11000m).

Special environmental applications

Explosion proof scenario: Explosion proof motors (such as YBJ25-4 motor with a power of 25kW and a speed of 1470 r/min) are used in coal mines, metallurgical mines, and other places.

Ship and ocean engineering: helicopter rescue winches, ship anchors, etc. (requiring waterproof and anti-corrosion performance).

3、 Standardized operating rules and safety regulations

Pre operation checklist

Mechanical structure:

Check the tightness of the anchor bolts and bearing seat fixing bolts (torque should reach 80% or more of the rated value).

Test the sensitivity of the braking device, with a clearance of ≤ 1.5mm between the brake shoe and the brake wheel.

Electrical system:

Verify the stability of the power supply voltage (within a fluctuation range of ± 5%).

Check the insulation resistance (≥ 1M Ω) to prevent the risk of leakage.

Safety device:

Test the function of limit switches and emergency stop buttons, with a response time of ≤ 0.2 seconds.

Confirm the integrity of protective covers and guardrails to prevent personnel from coming into contact with rotating parts.

Operating standards during operation

Load management:

Overloading is strictly prohibited (90% of the rated load is the safety upper limit).

The dynamic load test should exceed the rated load by 10% and be repeatedly increased three times to verify stability.

Speed control:

The slow winch rope speed is controlled at 7-13m/min, and the fast winch needs to be equipped with a frequency converter for speed regulation.

When lowering heavy objects, it is forbidden for the electric motor to not release the circuit breaker (to prevent "flying" accidents).

Signal and Communication:

The sound and light signals must be clear and reliable, and driving is not allowed if the signal is unclear.

Operators need to maintain eye contact or intercom communication with signal workers.

Maintenance and upkeep cycle

Daily inspection:

Clean up the debris in the steel wire rope and check the number of broken wires (replace immediately if it exceeds 10%).

Add lubricating oil (the oil level of the gear reducer should be kept above the oil level elevation line).

Monthly maintenance:

Replace the gearbox lubricating oil (using 55-7 oil, replace every 2-3 months).

Check the wear of the brake and adjust the clearance between the brake shoes.

Annual maintenance:

Test the insulation resistance of the motor and replace the aging cable.

Verify the limit device and over roll protection function.

4、 Typical accident cases and preventive measures

Brake failure accident

Reason: The brake shoes were worn out beyond the limit and were not replaced in a timely manner, resulting in heavy objects sliding down.

Prevention: Establish a brake wear monitoring system and set an alarm threshold for brake shoe thickness (such as mandatory replacement when ≤ 10mm).

Overload fracture accident

Reason: Improper lifting of heavy objects exceeding the rated load resulted in wire rope breakage.

Prevention: Install overload protection devices (such as torque limiters) and link emergency braking systems.

Electrical malfunction accident

Reason: The aging of the circuit caused a short circuit, leading to a fire.

Prevention: Use explosion-proof electrical components and regularly check the insulation performance of the circuit (once every quarter).

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