SU867850A1 - Bridge crane running gear - Google Patents

Description

(54) RUNNING OF THE BRIDGE CRANE

I

FIELD OF THE INVENTION The invention relates to lifting and transport engineering and concerns the design of undercarriages of bridge cranes.

The undercarriage part of the bridge crane is known, containing undercarriage carriages, horizontal guide rollers with working surfaces, and undercarriage wheels moving along crane rails with butt displacement of the latter in plan 1.

The disadvantage of this chassis is the increased imbalance of the bridge crane.

The purpose of the invention is to reduce the skew of the bridge crane.

This goal is achieved by the fact that the horizontal guide rollers are mounted on one side of the crane, the working surfaces of the guide rollers being spaced from each other at a distance equal to the width of the crane rail at the place of rolling the said rollers and butt mixing of rails in the plan.

FIG. 1 schematically shows the proposed running gear, a plan view; in fig. 2 - joint of crane rails.

The suspension part of the bridge crane contains the trolleys 1 and 2 hinged on the axles x 3 and 4 in the end beams 5 and 6 of the bridge crane. End beams 5 and 6 are rigidly connected with span beams 7 and 8. Running trolleys 1 and 2

5 are equipped with running wheels 9 and 10 moving along crane rails 11 and 12. The crane rails 11 are installed at the joints 13 with mutual displacement by the gap size, and in plan one

c relative to the other within the tolerance for the mutual displacement of the ends of the joined crane rails. The carts 1 are provided with horizontal guide rollers 14 arranged in plan from one another by an amount equal to the width

V5 crane rail and clearance a.

Chassis bridge crane works as follows.

The chassis is moved by the trolleys 1 and 2 along the crane rails 11, 20, while the horizontal guide rollers 14 interact with the side walls of the latter. When the undercarriage approaches the junction point 13 of the rails 11, the rollers 14, in contact with the rails 11, are rolled through the joint.

Limit distortions of the end beam 5 of the bridge crane is carried out by the rollers 14, and the end beam 6 by its rigid fastening with the span beam 7. The non-parallelism of the crane rails is compensated by the absence of the rollers 14 on one of the sides of the crane.

Claims (1)

Invention Formula The undercarriage part of an overhead crane, containing undercarriage, horizontal guide rollers with working surfaces and traveling wheels moving along crane rails with butt displacement of the latter in plan, characterized in that, in order to reduce the skew of the bridge crane, the horizontal guide rollers are installed on one side of the crane, the working surfaces of the guide rollers being spaced from each other at a distance equal to the width of the crane rail in the place of rolling the said rollers and the butt displacement rails in the plan. Sources of information taken into account in the examination 1. “Vestnik mashinostroeni, 1969, № 5, p. 24-25 (prototype).