500t Movable Pulley

500 t hoist device production in 500, the application in water resources and hydropower engineering hydraulic machinery factory 5 500 t bridge crane, is used in hoisting device of sluices, this kind of product work in the underwater, multiple components require chrome plated treatment, prevent...

Product Details

500 t hoist device production in 500, the application in water resources and hydropower engineering hydraulic machinery factory 5 500 t bridge crane, is used in hoisting device of sluices, this kind of product work in the underwater, multiple components require chrome plated treatment, prevent rust, to prolong the service life of the product.


2007 China water resources and hydropower engineering hydraulic machinery factory in wei hua 5 group order 500 t (1), (6) 450 t, 450 t bridge crane (1), the lifting all locks with movable pulley device made by my company matching.

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In order to ensure safe operation during operation, the crane is equipped with safety devices. In general, there are the following safety devices:

(1) lifting weight indicator (Angle plate, also known as weight limiter)

In arm closer to the roots of the Angle of the driving position indicator, it changes with arm elevation Angle, reflect the arm of the Angle of the ground, know the arm elevation of different position, according to the performance of the crane table and performance curves, the extent of it at a certain elevation values, lifting weight, lifting height, etc. The reference values.

(2) over winch limiter (also known as ultra high limit)

A safety device mounted on a pulley block at the end of a boom to limit the lifting height of the hook head to prevent over-lifting accidents.

It ensures that when lifting the hook to the limit position, it can automatically send an alarm signal or cut off the power source to stop lifting to prevent overwinding.

(3) torque limiter

Torque limiter is when the load torque reaches the rated lifting torque is automatically cut off when lifting or amplitude power supply, and a prohibitive alarm signals of safety device, is to prevent causing instability of the crane overload limiter.

Wear-resistant electrode

(4) anti-boom backtilt device and anti-boom support

The boom backtilt device and the boom support are safety devices that will not be hoisted when the boom is raised to the maximum rated elevation Angle


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