1. Design and production basis:
The design and production of the QL type screw type hoist are based on the "QL Type Screw Type Hoist Series Parameters" SD297-88 issued by the Ministry of Water Resources of the People's Republic of China Execute the standard technical documents of SD298-88 "Technical Conditions for QL Type Screw Gate Shutters" and DL/T5019-2004 "Specification for Manufacturing, Installation and Acceptance of Gate Shutters in Water Resources and Hydropower Engineering".
2. Scope of use:
The QL type screw type opening and closing machine is available in specifications of 0.5 tons, 1 ton, 2 tons, 3 tons, 5 tons, 8 tons, 10 tons, 12 tons, 15 tons, 20 tons, 25 tons, 30 tons, 40 tons, 50 tons, and 60 tons. According to the design requirements of users' water conservancy projects, it can also produce double lifting point opening and closing machines. This machine is a specialized machinery for water conservancy engineering and is widely used for controlling water gates on various water passage channels in water conservancy and hydropower, municipal construction, aquaculture, and agricultural water conservancy construction projects.
3. Technical features:
The QL type screw type hoist has the advantages of beautiful appearance, compact structure, easy installation, safe operation, flexible opening and closing, reliable operation, high bearing capacity, high work efficiency, long service life, and low maintenance costs.
4. User selection model specifications:
The QL type screw type hoist can be divided into two series: single lifting point and double lifting point. According to the driving method, it can be divided into two forms: manual and flashlight dual-use. The screw type opening and closing machines with a lifting force of 50 tons and 60 tons are only for electric use. When supplied, the random handle is only for installation and hand cranking during no-load adjustment. Hand cranking is not recommended when loaded.
(1) Model specification description
Adopting the unified standard model identification of water conservancy standards, such as the QL type double lifting point 20 ton flashlight dual-purpose screw hoist, the identification is as follows:
(2) When making a purchase, users must specify in the contract:
a： Specification and model of the hoist; b： Center distance between double suspension points; c： Total length of screw and thread length; d： Other special requirements.