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What are the technical characteristics of ultra-low temperature cold storage forklifts?

What are the technical characteristics of ultra-low temperature cold storage forklifts?

  • 2024-04-10
What are the technical characteristics of ultra-low temperature cold storage forklifts?

In view of the harsh operating conditions of low temperature and high humidity in cold storage, cold storage forklifts should aim to meet the technical characteristics and take countermeasures to ensure the normal operation of the forklift. The specific measures are as follows:
1. Electrical component reliability
The main measures taken for electrical components are anti-freeze and anti-rust. Switches should be non-contact switches as much as possible. Cables should be covered with special rubber skins to prevent hardening and deterioration. Internal heating elements should be used to maintain a dry environment for key components, such as electrically heated instruments. Waterproof connectors and electrical connector terminals are matched with rubber covers and professional water-proof circuit wiring to effectively deal with electrical failures caused by freezing and condensation.
2. Measures to prevent condensation water
The control equipment of the forklift is safely installed in a sealed box, which can effectively avoid condensation causing water droplets to condense and prevent erosion of the control equipment.
When in use, a buffer zone should be built between the cold storage, the charging area and the loading and unloading area. After the forklift operates for a specified period of time, the forklift drives out of the cold storage, rests in the buffer zone and replaces the battery, ensuring that the temperature of the buffer zone is at 0 ℃, and the humidity is controlled below 40%, so that the generation of condensation water can be effectively controlled. You can use a dehumidifier to control the humidity in the buffer area, or you can control the temperature by isolating the loading and unloading area to ensure lower humidity.
3. Anti-rust and anti-corrosion measures
The temperature difference between the inside and outside of the cold storage will cause the forklift to be in a "sweating" state after being exposed to water after leaving the cold storage. Especially when operating in the cold storage of aquatic products, it will also be corroded by salt. The main countermeasures adopted include shot blasting of metal structural parts, The paint film is strengthened and the bolt and nut machine pins are rust-proofed. On the basis of the primer spraying, the body iron plate can be sprayed with a low-temperature anti-rust protective layer to cope with the huge temperature difference in the incoming and outgoing operations.
4. Low temperature resistant grease
In order to prevent the hardening phenomenon caused by low temperature, the working hydraulic oil uses special hydraulic oil that changes its viscosity characteristics under low temperature environment, and the lubricating grease should also be selected with better low temperature characteristics. Hydraulic oil, gear oil, and lubricating oil all use special low-temperature resistant grease, which can enable the vehicle to obtain long-term and stable hydraulic and transmission performance in the cold storage.
5.Hydraulic system measures
It is suitable for ordinary forklift lifting cylinders at normal temperature. In a cold storage environment, due to the temperature difference, water droplets will be produced inside the cylinder and rust will affect the operation of the lifting cylinder. Therefore, an "oil-filled" lifting cylinder is used, filled with hydraulic oil. The inner cavity of the oil cylinder is full, which can effectively prevent the inner wall of the oil cylinder from rusting. The oil pumps and valves of the hydraulic system are packaged in low temperature, and the hydraulic hoses are made of low-temperature resistant rubber material, which can effectively prevent hose deterioration and hydraulic function abnormalities caused by low temperature; in addition, due to changes in the hydraulic working oil, hydraulic work at low temperatures The viscosity of the oil also changes, so the hydraulic oil pump used for lifting should also use an ultra-low temperature hydraulic oil pump.
6. Cab and interior heating
When working in low-temperature or even ultra-low-temperature cold storage, a cab should be equipped to improve the working environment. A heater should be installed in the cab. In order to prevent the glass from fogging, the glass of the cab should be electrically heated, or a wiper, hair dryer and other defrosting equipment should be installed. This ensures operational visibility.
7. Anti-slip measures in low temperature environments
In low-temperature cold storage, forklifts can use special anti-skid tires. The diameter of the driving wheel of a reach forklift is smaller than that of a counterbalanced forklift, and its anti-skid performance is poor. Therefore, the tires of a reach forklift in a cold storage should have polyurethane tires with anti-skid sleeves to ensure that the forklift can fully exert its driving force and braking force on frozen roads. power. Polyester tires with reinforced mesh ensure that the forklift has sufficient driving force and good control even on frozen ground. In addition, by optimizing the control strategy to adjust the driving wheel start-up smoothness and follow ability during sharp turns, it is ensured that the forklift will not slip sideways even when driving on wet and slippery indoor floors, and avoid rollover during sharp turns, effectively Ensure operator safety.

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