RU2751102C1 - End beam of hoisting crane - Google Patents

Abstract

FIELD: hoisting and transport engineering.

SUBSTANCE: invention relates to hoisting and transport engineering, namely to the end beams of overhead bridge cranes. The end beam of the hoisting crane is made in the form of a metal structure that has a shaft, a gear, running wheels with teeth, at least one of which is kinematically connected to the drive mechanism. The metal structure has side walls interconnected by means of plates, the running wheels are mounted in pairs on opposite side walls and are located between them.

EFFECT: reduction of metal consumption of the end beam, ease of assembly of the structure, as well as expansion of the functionality of using the end beam.

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Description

The invention relates to lifting and transport engineering, namely to the end beams of overhead bridge cranes.

Known end girder overhead lifting crane, including a metal structure, carrying trolleys, consisting of pairwise interconnected carriages, each of which is formed by interconnected cheeks with running rollers. The carriages are interconnected by means of open profile beams connected to the carriage cheeks and having a hole in which the axis is located [1]. This design is characterized by a large number of components, which leads to a high metal consumption of the crane and the complexity of its manufacture.

Known end girder overhead lifting crane, selected as a prototype, which is a metal structure with bogies attached to it, including interconnected cheeks with traveling wheels located between them kinematically connected to the drive mechanism. Coaxial bushings are rigidly fixed in the cheeks, the axes of which are located in the same horizontal plane with the axles of the travel wheels. In the end beams, holes are made, in which the cantilever parts of the said bushings are installed with the possibility of rotation, through some of which the drive shafts of the corresponding rollers are passed [2]. The known end girder is characterized by high metal consumption, complexity of manufacture and installation.

The aim of the invention is to reduce the metal consumption of the end beam, ease of assembly of the structure, as well as to expand the functionality of using the end beam.

This goal is achieved in that the end girder of the crane is made in the form of a metal structure that contains a shaft, a gear, running wheels with teeth, at least one of which is kinematically connected to the drive mechanism, characterized in that the metal structure contains side walls, interconnected by means of plates, the running wheels are mounted in pairs on opposite side walls and are located between them.

The metal structure contains two rods with side walls, interconnected by a plate (Fig. 1, section A-A). The connecting plate is made with holes for attaching an I-beam. The running wheels are mounted in pairs on opposite side walls and are located between them. The running wheels contain a shaft mounted in a bearing assembly, the end of which is attached to the side wall of the metal structure. The end beam contains a gear mounted in the bearing assembly and fixed on the side wall, transmitting movement from the drive mechanism shaft to a travel wheel made with teeth meshing with the gear. In some cases, the end beam may contain two gears mounted in bearing assemblies, coaxially fixed on opposite side walls and connected to each other by means of a shaft, transmitting motion to two opposing running wheels made with teeth engaging the gears. The shaft connecting the opposing gears contains an end passing through the side wall of the metal structure and the shaft is fixed with a cover. It is preferable that the fastening of the plates to the side walls of the metal structure is detachable. It is also preferable that the fastening of the axles of the travel wheels to the side walls of the metal structure is made detachable. The gears are fastened to the side walls of the metal structure in a separable manner.

Figure 1 shows a general view of the beam and section A-A, figure 2 - section B-B of the wheel drive, figure 3 - fastening the gear motor to the drive wheel.

The gear motor 1 transmits the rotation to the shaft 2. The shaft 2 rotates the gear 3 through the key. The rotation of the wheels 4 is transmitted from the gear motor 1 through the gears 3 connected to each other, mounted in the bearing assembly. The shaft is secured by a cover with a bearing unit 5 and a plate. The end beam contains a gear 3 that transmits movement from the drive shaft to the travel wheels 4, made with teeth that mesh with the gear 3. The gear 3 is mounted in the bearing assembly and fixed on the side wall of the metal structure.

The declared end girder of the lifting crane is characterized by a decrease in the mass of the end girder, a decrease in the labor intensity of manufacturing and an increase in the accuracy of assembly of the end girder, as well as the possibility of using a manual drive.

Information sources

1. Copyright certificate No. 1041496 В66С 17/00. Suspended hoisting crane, patentee of the All-Russian Scientific Research and Design Institute of Hoisting Transport Engineering, App. 04/22/82, publ. 09/15/83, bul. No. 34.

2. Copyright certificate No. 1747376 B66 17/00. Suspended hoisting crane, patentee, Design Bureau, Artem, Vostokpodyomtransmash, Appl. 12/22/1989, publ. 07.15.92 g, bul. No. 26.

Claims (1)

The end beam of a lifting crane, including a metal structure on which traveling wheels are installed, at least one of which is kinematically connected to the drive mechanism, characterized in that the metal structure contains side walls interconnected by means of plates, the traveling wheels are mounted in pairs on opposite side walls and located between them.

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