SU552279A1 - Device for lifting boom self-propelled cranes on overhead crane - Google Patents

Description

one

The invention relates to devices used for lifting, on a bridge crane, jib self-propelled cranes, designed to separate and simultaneously lift heavy and long parts and assemblies to a bridge crane during repair.

A device for lifting jib self-propelled cranes on an overhead crane, containing a platform with fastening elements

Ij.

The purpose of the invention is to improve the safety of work when lifting repair equipment on an overhead crane.

This is achieved by the fact that at the ends of the platform there are supports with catchers fixed to them, "wounds", and in the middle part of the platform - folding rollers and balance weights,

FIG. 1 shows a device for lifting jib cranes on an overhead crane, general view; fig 2 is the same in terms of.

The platform 1 of the device is mounted on two pairs of wheels 2, one of which is rotatable and connected by means of four 3 with a planet carrier 4, designed to be connected to the vehicle when the platform is moved. On platform 1, in the zone of intersection of the longitudinal and transverse axes, pin 5 is fastened, which is connected to the hook of the lifting mechanism of the bridge crane when lifting

the platforms, as well as two mutually perpendicular ravines of folding rollers b, intended for attachment to the cables of the suspension of the bridge crane in order to prevent the device from tipping over. In addition, balance weights 7 are strengthened in the same platform 1i 1 zone, the weight and location of which are chosen so that the center of gravity of the device with mounted cranes was somewhat below the axis of the lower iir of folding rollers.

On the opposite ends of platform 1, the tomb-shaped supports 8 are strengthened, each of which is equipped with conical catchers with fixators 9 cranes 10. The heights of the supports 8 are chosen so that at the end of the lifting the wheel device and raised cranes are located slightly higher than the rails of the trolley of the bridge edge. This wheel position

allows them to be deployed and installed on rails.

The proposed device for lifting jib cranes on an overhead crane is carried out as follows

Before the device is lifted, the rollers 6 tilt back, the hook of the overhead crane lifting mechanism hooks onto pin 5, and the folding rollers are set to the working position. Further, the lifting mechanism bridge

the crane lifts the platform with the jib cranes mounted on it to a height at which the wheels of the jib cranes turn out to be somewhat higher than the rails of the trolley track. At this height, the wheels turn to the working position and lower the platform. The lifting height of the device is limited by the lifting height of the hook itself.

The wheels of the jib cranes, touching the rails of the path of the trolley, stop the joint mixing, lowering the jib cranes with the platform.

The cranes remain on the bridge crane, and the platform continues 0) to start until the floor of the workshop is touched, then the roller B 6 is tilted and the hook of the lifting mechanism of the bridge wound is released, which immediately returns to its original position.

After the repair of the main crane is completed, the hook of its lifting mechanism is lowered, the rollers 6 are folded back, the hook is connected to the pin, and the rollers are returned to their original position. After that, the device rises to Kasani with Jib cranes, with cone catchers-clamps entering the holes of the base of the cranes, and only after

of this, the cranes are removed from the rails and raised to a height sufficient to lead the wheels from the working position to the position “lift-off.”

Further, the platform with the boom cranes is lowered. When the platform reaches the shop floor, the rollers 6 fold back, the hook is released from the pin 5 and rises to the initial position, the rollers also occupy the initial position.

Claims (1)

1. Auth. St. No. 347288, cl. In 66С 17/00, 10.08.72.