SU1512919A1 - Self-erecting travelling gantry crane - Google Patents

Abstract

The invention relates to industrial transport, namely to a gantry self-erecting crane. The purpose of the invention is to improve the ease of installation. The gantry crane is assembled on a long rack 1 and a short rack 2 connected by a hinge and in the initial stage of installation at a small angle of inclination to the plane of the crane rails. Between the trolleys 5 and 8, an anti-roll polyspast 9 is installed. The crane span is attached to the bottom by means of hinges 12 to the slide 13, on which are adjustable length stops 14. On top of the span is attached a flexible ha 15, the other end of which is attached to Koryu 16. Tg 15 passes through a system of guide blocks 17. On the upper part of the long pillar 1 are retractable stops. 1 hp ff, 3 ill.

Description

The invention relates to industrial transport, namely to a gantry crane,

The purpose of the invention is to improve the ease of installation,

FIG. 1 shows a gantry crane in the process of installation (solid lines in the initial position, in-dash in intermediate position), side view; FIG. 2 shows the assembly I in FIG. 1, the crane at the beginning of the climb; FIG. 3 shows a crane in an elevated state, side view.

The gantry crane contains a long 1 and a short 2 support posts connected by a hinge 3 and being in the initial stage of installation at a small angle of inclination to the plane of the crane rails. The rack 1 through the hinge 4 is connected with the undercarriage 5. fixed for the period of installation motionless with the help of the stop 6 on the crane runway.

The rack 2 is connected by means of a hinge 7 to a movable undercarriage 8, Between the undercarriages 5 and 8, a fixed polyspast 9 of variable length is installed, the running rope of which is mounted on the drum of the mounting winch 10 located outside the mounted crane behind the stationary undercarriage,

The crane span 11, assembled on inventory supports in the vertical plane, is attached to the bottom by means of hinges 12 to the slide 13, on which are located lengthwise adjustable stops 14, which serve to support the span 11

SP

IVD

with

during installation and fastening after installation.

The hinges 12 of the superstructure are displaced relative to its mid-plane and the center of the rigid- and to the side wall located on the side of the abutment 14, which ensures the separation of the superstructure 11 from the inventory supports on which it is assembled, and also allows you to rotate the span structure 11 around hinges 12 to align the line of action of mass P, directed from the center of body of the span 11 with the axis of the hinges 12, and support it without hitting the stops 14.

On top of the span I1, a flexible bend of 15 hectares is attached with a constant rope length, the other end of which is attached to a bark 16 located on the ground outside the movable trolley 8,

Th ha 15 passes through a system of guide blocks 17 located on both ends on the top 18 of the rack

The supports at the w-arnir 3, connecting the branches 1 and 2 of the supports, and at the hinges 7, connecting the rack 2 with the chassis trolley 8..

On the rack 1 of the crane in its lower part from the outside there are stops 19, which are used to support the sled 13 in the initial position of installation, and in the upper part of this branch of the support there are retractable stops 20 intended for supporting the sled 13 with the span 11 after their ascent rack 1-, as well as fasteners, respectively, used to fasten the span-building

IIk sled 13 and the same sled to the rack 1.

When assembled, racks 1 and 2 are connected by a tie; When turning on the assembly winches

With the 10th canal of the rigid polyspast 9, the movable travel carriage 8 is pulled toward the stationary carriage 5, wherein the legs 1 and 2 are raised and the flying structure 11 is rotated around the lower hinges 12 to the adjustable stop 14 by means of the road pulley 9 span structure

11, together with the slide 13, moves upward along the support column 1 to its upper position and is fixed you

Q j

0

five

0

g q

with

0

five

Moving lugs 20 and fasteners to the rack 1, Then, the spindle of the adjustable stop 14 is reduced and further minor steps of shaking of the pillars 1 and 2 are reduced to the vertical position, in which it is finally attached to the slide 13 by fasteners 21,

Racks 1 and 2 of the crane are connected by constant tightening, dismantling the tackles, the crane is ready for operation.

The force in the rigid polyspast 9 is determined mainly by the mass of the supports and practically does not change during installation, since the mass of the span structure 11 adds force gradually as it rises along the support leg, and the force from the mass of the supports decreases as they rise. .

Claims (1)

 1. A gantry self-mounting crane containing support posts connected hinged to each other and with holders of a tackle pulley mounted on the undercarriages, the rope of which is connected to the towing device, and a span structure connected to the support posts by means of a flexible tie and attached to them units, which distinguishes me from the fact that, in order to improve ease of installation, it is equipped with a carrier mounted on one of the supporting posts with a rail mounted on their end, facing towards the top of the support post, it is adjustable An emphasis for a span connected hingedly to a sled at the other end and rigidly connected to a flexible rod, the other end of which is rigidly fixed. On the bark from the other support post, the guide blocks are installed on both sides of the head first. the support post and the side of the hinges connecting the support posts and the second bearing stand with a block yoke, 2, a crane according to claim 1, characterized in that the hinge for fastening the span on the slide is mounted relative to the longitudinal axis of the span with an offset to their front end. . (rig.1 C) and d. 2 fi gh