SU943187A1 - Crane supporting structure - Google Patents

Description

(54) CRANE SUPPORTED DESIGN

one

The invention relates to a lifting and transport machinery, in particular to mobile rotary cranes having a support structure with a support ring, which simplifies the design of the crane, reduces its metal consumption and increases the support contour.

The known supporting structure of the crane is in the form of a fixed platform with beams hinged to it with jacks at the ends on which the support ring rests. On the support ring move the trolleys, pivotally connected to the turntable, on which the boom and crane operating mechanisms are mounted. In the central part of the fixed frame there is a turntable 1.

However, the known support structure is very complex and, although it provides an increase in the crane support contour and, consequently, an increase in its carrying capacity, makes it much more difficult to install and dismount, and increases its metal consumption.

Closest to the present invention is a crane supporting structure, comprising a platform with working equipment and support beams, at the ends of which drive running carriages are mounted, and a support ring mounted on jacks, on which platform 2 is mounted with a possibility of movement by means of the aforementioned carriages.

However, this design does not solve the problem of in-place transportation of the oversized crane supporting structure when relocating it from object to object. In addition, the presence of a central support complicates and weakens the design

10 manual.

The purpose of the invention is to simplify the installation, dismantlement of the supporting structure of the crane and the improvement of the transportation conditions of the crane.

To achieve this goal, the 5 beams are made telescopic, and the platform is equipped with force cylinders hinged to it, the rods of which are pivotally connected to the bases of the support beams, while the supporting ring is made of two half-rings, connected by a locking device.

FIG. 1 shows a crane equipped with a support ring in the operating position, general view; in fig. 2 - the same, in the transport position; in fig. 3 - reference

ring, in plan; in fig. 4 - supporting structure, rear view; in fig. 5 - support ring with guides and driving member.

The supporting structure of the crane consists of a platform 2 fixed on the chassis 1 with working equipment mounted on it, for example, tower-boom equipment 3, a control cabin 4, hydraulic cylinders 5 for raising the tower and the boom. Two telescopic support beams 6 are mounted on the platform, the bases 7 of which are pivotally connected by means of power cylinders 8 to platform 2. Each pair of support beams is equipped with driving chassis 9 connected by beams 10 and installed in guides 11 of support semiring 12 with jacks 13. Half rings podveschenny to the cargo platform through the lugs 14 with rollers 15. The half rings are connected at the ends of the locking device 16. On the inner perimeter of each half ring rigidly fixed sleeve-roller chain 17. N one of the beams 10, a gear 18 with the drive chain 19.

The supporting structure of the crane operates as follows.

Upon arrival at the construction or mounting platform, cylinders 8, which act on the beams 6, are switched on, converting them together with the semirings 12 from the transport (vertical) position to the working (horizontal) position. Here, the half-rings are turned on the eyes 14 and are closed with their ends, forming a support ring. Next, using jacks 13, the chassis 1 together with platform 2 is hung above the surface of the site. In order to turn the boom of the crane in the desired direction by the chain 19, the wheel 18 is turned on, which by means of the chain 17 will move the carriages 9 along the ring guides 11, thereby turning the platform along with the boom and the undercarriage. Upon termination of work of a crane a platform with a tower and boom equipment

is set in a position where its longitudinal axis is aligned with the connector line of the support ring, after which the jacks 13 lower part 1 to the platform. Next, disconnect the locking device of the reference

rings, and the semiring raise to the transport position. The crane is ready for relocation to another construction site.

A crane with the proposed support device in comparison with the known structures of such cranes requires less consumption of materials and labor costs for its manufacture.

The use of such a support device not only simplifies the design of the crane, but reduces the time for its relocation,

increases crane mobility, provides the ability to move in traffic.

Claims (2)

Invention Formula The supporting structure of the crane, containing a platform with working equipment and supporting beams, at the ends of which drive chassis are mounted, and a supporting ring mounted on jacks, on which a platform is installed with a possibility of movement, through the aforementioned carriages, in order to simplify installation - dismantling of the crane support structure and improvement transport conditions of the crane, the support beams are made telescopic, and the platform is provided with power cylinders hinged to it, the rods of which are hingedly connected to the bases of the support beams, while the support ring made a composite of two half-rings connected by a locking device. Sources of information taken into account during the examination 1. Patent of England No. 1413465, cl. In 8th, 1975. 2. US patent No. 3949881, cl. 212-68, 1976 (prototype). / 12