Double-machine traction device

Abstract

The invention relates to a double-machine traction device, and solves the defects of incapability of quickly braking a car, low braking reliability and low elevator safety easily caused by insufficient braking force due to emergent braking in a traditional elevator through a brake. The double-machine traction device comprises a tractor, a traction wheel, a worm gear mechanism, a rescue motor and asynchronous mechanism. A worm wheel is coaxially connected with the traction wheel, and is synchronously rotated with the traction wheel; through a mechanical transmission mode, the synchronous mechanism is connected with a worm rod, and drives the worm rod to maintain synchronous rotation with the worm wheel; and the worm rod is driven to rotate only during rescuing. The worm rod is engaged withthe worm wheel to form a locking mechanism of the traction wheel, so that the reliable braking of the traction wheel can be realized when an elevator system is powered off or failed, and the accidents of roof collision or bottom collision of cars are effectively prevented; and the rescue motor drives the worm rod to drive the traction wheel to rotate to realize timely rescue.

Description

technical field [0001] The invention relates to a traction device, in particular to a double-machine traction device with a main traction motor and a rescue motor. Background technique [0002] In high-rise buildings, in order to adapt to the needs of height changes, lifting devices are a necessary supporting equipment, such as elevators, which can bring great convenience to users. [0003] An elevator is a vertical elevator powered by a motor, also known as a vertical elevator. The vertical elevator is equipped with a box-shaped gondola, which is used for multi-storey buildings to take people or carry goods. From the earliest first-step safety elevator to the modern automatic control elevator, although it has been developed for hundreds of years, most of the elevators are driven by a traction drive mechanism, including a traction machine set on the top of the hoistway. The traction machine is connected to the traction wheel, and there is a traction rope on the traction wh...

AI Technical Summary

Problems solved by technology

[0007] The invention solves the defects that the existing elevator performs emergency braking through the brake, and the car cannot be braked quickly due to the insufficient holding force of the brake, the braking reliability is low, and the elevator safety is not high. It provides a A double-machine traction device, which can quickly brake when the elevator system fails, and directly locks and brakes through a traction wheel locking method. The braking reliability is high, and it can effectively prevent the car from jumping to the top or squatting. Bottom safety accident

[0008] The present invention also solves the defects that the existing elevator cannot save itself and needs an external professional rescue team to rescue, the waiting time in the car is long, and it is easy to lose the first rescue time. It provides a double-machine traction device with a rescue The motor can be rescued by passengers in the car, winning the first rescue time and improving the safety of the elevator

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