SU95163A1 - Construction crane - Google Patents

Description

The subject of the invention is a construction load-lifting crane mounted on the frame beams and other structures of the multi-storey building under construction.

The known cranes of this mud, equipped with straps (cables) as well as driving blocks alternately moved by means of cables fixed to the ends, have the disadvantage that their vertical movement from floor to floor is difficult.

In the proposed crane, this disadvantage is eliminated by the fact that the running wheels rolling along the driving beams are fixed on the movable elements of the jacks, the bodies of which are welded to the crane frame, moreover, for lifting the driving beams, pick-up rollers are used that are mounted on the sleeves of the driving wheels. In order to increase the stability of the crane in working condition by means of cables installed on either side, the latter are attached to a disk that is rotatable relative to the vertical axis of the crane.

FIG. 1 crane is shown on the side; in fig. 2 - the same crane on top; on

FIG. 3 - the scheme of rearrangement of a single screen to another; in fig. 4-10 - separate units and parts of the crane.

The boom / crane, together with the anti-spring console 2 and the winch 3 mounted on it, is rotated by means of an actuator 4 mounted on a banana-5 crane.

During operation of the crane, the upper part of the towers is fixed by straps (vantamn) 6. To install the tails in either direction, their upper ends are attached to the turntable 7, which rotates on the axis 8. The tower of the crane rests on two supporting bars I on frame bolts or other supporting structures of the building under construction; To prevent the crane from tipping over when the weight of the lifted load changes, spring-loaded foors are provided.

When the crane moves horizontally from one working position to another, the OTTY (cables) are removed, the crane tower is lifted by means of jacks, the bodies of which 11 are welded to the supporting frame

and is supported on the driving wheels 12, rolling along the beams 13.

After the crane is moved to the length of the driving beams - the crane tower is lowered by means of jacks and placed on the supporting points; then the pistons of the 14 jacks raise the driving wheels together with the driving beams supported by the pickup rollers / 5, strengthened; ..; on the cage of the driving wheels. .Speaking on the pick-up rollers, the driving beams, by means of the cables fixed at their ends, move to a new position, after which the cycle of movement of the crane is repeated.

With vertical movement, one crane to another from floor to floor separately raise the crane itself and its driving beams. In order to quickly disconnect the crane from the driving beams, the pickup rollers are mounted on pivoting brackets 16 with lockable rods 17, when pulled, the brackets are pushed aside to the position shown in fig. 8 dotted line.

Subject invention

Claims (4)

1. A construction crane installed on the structures of a multi-storey large-panel building under construction and equipped with a device for periodic horizontal movement in the form of driving beams alternately displaced by means of ropes fixed at their ends wound on opposite sides of the crane winch drum and the fact that - to ensure vertical mobility of the driving, relative to the crane, the beams, the running support wheels are mounted on the moving elements of jacks, whose bodies are welded to crane frame. 2. The construction form of the construction crane according to claim 1, characterized in that pick-up rollers mounted on the running wheels fail are used to lift the driving beams when they are shifted relative to the crane. 3. The form of execution of the construction crane according to claim 2, characterized in that, in order to unfasten the driving beams, the pickup rollers are made folding. 4. The form of the construction crane on PP. 1-3, characterized in that, in order to increase the stability of the crane during the lifting of loads by means of cables installed on either side (cables;), they are attached to a disk that is rotatable relative to the vertical axis of the crane. lh   - FIG. 2 ten 7 „ u .y FIG. four ...