The working environment requirements for hand cranked hoists (hand cranked lifting equipment) need to be comprehensively based on international/domestic standards, operating specifications, and actual scene requirements, which can be divided into the following dimensions:

1、 Environmental adaptability requirements

temperature range

Standard specifications: Mainstream standards such as ASME B30.16, EN 13157, JB/T 7334-2016 stipulate that the normal operating temperature is -10 ℃ to 50 ℃; ASME HST-2 recommends -18 ℃ to 54 ℃; Russian GOST 28408-1989 allows temperatures between -40 ℃ and 40 ℃, and extreme low temperatures require the use of low-temperature lubricants or reduced load capacity.

Special scenario: High temperature environments (such as metallurgical workshops) require air conditioning/fan cooling, and equipment needs to be equipped with temperature control devices and fuse mechanisms; Low temperature environments (such as below -23 ℃) require the use of antifreeze models or adjustment of lubrication schemes.

Humidity and Corrosion Protection

Normal environmental humidity ≤ 85%. For humid environments (such as shipyards and coastal areas), anti-corrosion coatings, stainless steel materials, or drying equipment should be used for rust prevention; Special anti-corrosion hand cranked hoists (such as galvanized/plastic coated models) should be selected for acid-base/chemical corrosion environments.

Dust environments (such as mines and cement plants) require regular cleaning of chains and gears, operators need to wear dust masks, and equipment needs to be equipped with dust covers.

Space and Layout

Installation space: Reserve 1.5 times the travel space vertically and maintain a deviation angle of ≤ 30 ° horizontally to avoid chain twisting; The tensile strength of the fixed point must be ≥ 4 times the rated load, and the bending moment deformation must be verified for beam installation.

Operating safety distance: An open space of at least 1m (as required by OSHA) must be left behind the operator to ensure an emergency shelter space; Do not stand/walk under heavy objects, in the direction of force, or directly below.

2、 Safety and operational standards

Equipment status check

Before operation, it is necessary to check key components such as hooks, chains, brakes, and gears to confirm that there are no cracks, wear, deformation, or corrosion; The braking system needs to be sensitive and reliable, with no oil stains or excessive wear on the brake pads/claws.

The new chain needs to be preloaded with 50% of the rated load for testing during its first use; Regularly conduct static load (rated load 125%) and dynamic load (repeated lifting and lowering) tests.

Operation restrictions

Overloading is strictly prohibited: the rated load must be clearly marked, and overloading may cause chain breakage, equipment damage, or safety accidents; When multiple people are operating, coordination and consistency are required (such as 2 people pulling 5-8t load and 3 people pulling 10-15t load).

Operation direction: The zipper direction should be consistent with the chain direction to avoid chain jamming or falling off; Ensure that the zipper is aligned with the direction of the lifting chain when using in a tilted/horizontal position.

Special scenario protection

Flammable and explosive environment: Explosion proof hand cranked hoists should be selected to avoid accidents caused by electrical sparks; Operators need to wear anti-static equipment.

High altitude operations: Wear safety helmets, safety belts, and use fall arresters; The equipment needs to be fixed on a stable support structure to prevent falling.

3、 Maintenance and compliance requirements

regular maintenance

Transmission components (gears, bearings, chains) should be regularly coated with specialized lubricating grease (such as lithium based grease) to avoid the use of corrosive lubricants; The chain needs to be kept clean to avoid the accumulation of dirt/dust.

The equipment should be stored in a dry and ventilated place to avoid corrosion caused by moisture; After long-term disuse, a comprehensive inspection, lubrication, and no-load test should be conducted before resuming use.

Compliance standards

Adhere to standards such as ASME B30.16, OSHA, EN 13157, JB/T 7334-2016 to ensure that equipment design, manufacturing, operation, and maintenance comply with safety regulations.

Maintenance and repair records must be kept intact for easy auditing and fault tracing; Operators need to receive professional training and hold certificates to work.

4、 Emergency response and risk avoidance

Troubleshooting: If any abnormal sounds, vibrations, or brake failures are found in the equipment, the operation should be stopped immediately and the cause investigated; When heavy objects fall off or equipment malfunctions, emergency plans must be activated to ensure personnel safety.

Lessons learned from accidents: Overloading, loose binding, improper positioning, and lack of protective equipment are common causes of accidents, and risks need to be avoided through training, standardized operations, and regular inspections.

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