To ensure the quality of the Explosion Proof Manual Hoist Trolley, a full lifecycle management system must be established, covering four stages: procurement, use, maintenance, and emergency response. The following is the specific implementation plan:

1、 Procurement stage: Source quality control

Supplier Qualification Review

Verify the ISO 9001 quality management system and ATEX/IECEx production qualifications.

Request to provide a commitment letter stating that there have been no quality accidents with similar products in the past 3 years.

Technical specification locking

Clearly define the explosion-proof level (such as Ex d IIB T3) and the ambient temperature range (-20 ℃~60 ℃).

Specify key component materials: chain (alloy steel grade 80), gear (copper alloy), tire (conductive rubber).

Arrival inspection

Explosion proof verification: Use a spark tester (such as ExSpark 1000) to simulate friction and ensure that no sparks are generated.

Grounding test: The measured value of the grounding resistance tester is ≤ 1 Ω.

Load test: Apply 1.25 times the rated load and run 100 times without deformation or jamming.

2、 Usage stage: Dynamic risk management

Operational compliance

Implement a "double confirmation system": the operator and guardian jointly inspect the explosion-proof markings and lubrication status.

Mandatory use of registration card: Record usage time, load weight, environmental temperature and humidity.

Routine check

Daily inspection items: brake wear (≤ 1/3 of original thickness), chain cracks, and grease leakage.

Weekly in-depth inspection: rust on the explosion-proof surface (using a 30x magnifying glass) and wear on the tire contact zone.

Environmental adaptation monitoring

Deploy temperature and humidity sensors in the chemical area, which will automatically sound an alarm and prohibit equipment from entering when exceeded.

3、 Maintenance phase: Precise preventive maintenance

lubrication management

Using an automatic lubrication system (such as Lincoln QSL), set the lubrication cycle according to the load level.

HLP ISO VG 220 synthetic oil (suitable for -30 ℃ low temperature) is selected as the lubricating grease.

Component life management

Chain: Mandatory replacement every 2 years or 5000 cycles.

Brake pads: Replace immediately if the thickness is less than 3mm (equipped with an original spare part number traceability system).

Upgrade and transform

Install intelligent sensors on equipment with over 5 years of experience to monitor abnormal vibration/temperature.

Eliminate non modular design equipment and prioritize models that can quickly replace power units (such as electric/manual switching).

4、 Emergency and Continuous Improvement

Emergency plan

Develop the SOP for Handling Explosion proof Equipment Malfunctions, including scenarios such as spark generation and load falling.

Equipped with emergency kit: explosion-proof toolbox, static eliminator, chemical adsorption pad.

Quality traceability

Establish a blockchain based equipment archive: from raw material batches to maintenance records, the entire process is uploaded to the blockchain.

Generate quality analysis reports every quarter, identify high-frequency faulty components (such as bearings), and provide feedback to procurement decisions.

Technological iteration

Signed a joint research and development agreement with the supplier to develop a 316L stainless steel+tungsten carbide coating framework for corrosive environments.

Testing hydrogen fuel cells to replace traditional hydraulic power and eliminate the risk of hydraulic oil leakage.

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