SU757459A1 - Apparatus for rotating load - Google Patents

Description

The invention relates to lifting devices, namely, devices for rotating cargo mounted on the suspension of lifting machines.

A rotary device is known, comprising a cylindrical body, a shaft housed therein and a mechanical drive with a gearbox for rotating the shafts [ΐ].

However, this device is complicated in construction and does not provide a smooth rotation of the load. The device to turn the load is the closest to the invention, 1 containing a cylinder with a radial internal partition, an axis coaxially mounted in the cylinder on which a radial blade is fixed, and channels 2 communicating with the cavities of the cylinder for the supply and removal of working fluid [2].

The disadvantage of this device is the complexity of design and the possibility of shock dynam- ^{February 1} namic loads on the blade load at stop.

The purpose of the invention is to simplify the design of the device and improve the conditions of its operation by eliminating 3

2

impact loads when stopping a rotating load.

This goal is achieved by the fact that the channels for the supply and removal of fluid is made in the body of the axis, and on the surface of the axis or in contact with it, the walls are made throttle grooves.

. The partition along its perimeter can θ be provided with a seal, and the choke

The grooves can be made with variable cross-section.

FIG. 1 shows a device for rotating a load, general view, section; on

5 of FIG. 2 - the same, top view, section; in fig. 3 - the location of the input fittings; in fig. 4 and FIG. 6 shows embodiments of chokes on the axis surface; in fig. 5 and FIG. 7 -

0 the same plan view; in fig. 8 and “FIG. 10 shows embodiments of chokes on the partition surface; in fig. 9 and FIG. 11 - the same view in the plan,

five . The device to rotate the cargo contains an outer cylinder 1, closed

bottom washer 2 with bracket 3 fasteners lifting device.

A partition 4 is installed in the cylinder, fastened with screws 5 and 6 to

757459

cylinder body 1. In the cylinder axis 7 is coaxially installed with channels 8 and ¹ 9 for supplying and discharging working fluid by fittings 10 and 11. On axis 7, grooves of variable cross section 12 and 13 are made, and the blade 14 is fixed, mounted in axis 7 and spring-loaded spring 15, pressing the blade 14 to the cylinder 1. On the axis 7 there is a bracket 16 for fastening the device to the suspension of the load-lifting machine. Seals 17-20 serve to seal the cavities of cylinder 1.

Device for rotating cargo, hung on a lifting machine, works as follows.

Coming into the cylinder 1 through the fitting 11 and the channel 9, the working fluid fills the pressure ring, the cavity and, since the axis 7 is stationary, the cylinder 1 rotates and the weight attached to it (counterclockwise). As the partition 4 approaches the blade 14, the flow area of the throttle groove 13 decreases to a value close, in the extreme position, to zero, thus the speed of the partition 4 and the outer cylinder 1 decreases to zero. The partition 4, connected to the cylinder 1, on which the load is fixed, smoothly, without hitting the blade 14, stops in the extreme position.

The rotation of the cylinder 1 clockwise occurs when the flow of the working fluid through the nozzle 10 and channel 8.

The advantages of the proposed device for reversing the load are the ease of implementation, the channels of approach and removal of fluid, an uncomplicated ’throttle device, which ensures that the partition approaches the blade without impact. The presence of seals on the partition eliminates the overflow of the worker.

5 fluids between cavities.

Claims (3)

Claim (ABOUT 15 20 25 thirty 35 1. A device for rotating a cargo, comprising a cylinder, with a radial internal partition, an axis coaxially mounted in the cylinder on which a radial blade is fixed, and channels for supplying and discharging working fluid connected to the cylinder cavities, characterized in that, in order to simplify the design of the device and improving its operating conditions by eliminating shock loads when stopping a rotating load, the channels for supplying and discharging fluid are made in the body of the axis, and on the surface of the axis or the bulkhead in contact with it full chokes. 2. The device according to claim 1, which is based on the fact that the partition along its perimeter is provided with a seal. 3. The device according to PP. 1 and 2, which is characterized by the fact that the throttle grooves are made with a variable cross section.