Transmission of mandrel thrust trolley of perforating machine

Abstract

The invention discloses a transmission of a mandrel thrust trolley of a perforating machine, relating to steel rolling machinery. By means of the invention, the potential security hazard of the mandrel thrust trolley of the perforating machine can be solved. The transmission disclosed by the invention comprises a power system, a gear and gear rack mechanism and a mandrel trolley. The power system is composed of a motor, a coupling with a brake disc, a decelerator and a coupling. A small gear and a long gear rack are meshed so as to form the gear and gear rack mechanism. The mandrel trolley is connected with the long gear rack. The output shaft of the decelerator is connected with the small gear through the coupling. Wherein the tooth surface of the long gear rack is upward; the lower part of the long gear rack is provided with a full-length sliding plate; the sliding plate is positioned above a roller way and is capable of sliding along the roller way; the roller way is composed of a plurality of rollers; each roller is fixed on a roller way base through a bearing base; and the tail part of the long gear rack is supported on two guide rails of the roller way base through an idler wheel. The transmission disclosed by the invention is used for the perforating machine in the seamless steel tube production. Unsafe hidden troubles are eliminated. The transmission has the advantages of low moving inertia, steady operation, non-deformed gear rack and the like.

Description

technical field [0001] The invention belongs to steel rolling machinery, in particular to a push rod thrust trolley of a piercing machine in the production of seamless steel pipes. Background technique [0002] In the current production of seamless steel pipes, the piercer needs to use the ejector pin to pierce a hole through the heated solid blank, and the ejector pin is quickly advanced, stopped, and quickly pulled back. The device that completes these operations is called "piercing machine ejector pin thrust". trolley". [0003] The current thrust trolley for the ejector rod of the piercing machine has a structure such as figure 1 , 2 , 3 shows: the pinion 6 is driven by the motor 2, the coupling 3 with the brake disc, the reducer 4, and the coupling 5, the pinion 6 meshes with the long rack 7, and the long rack 7 is connected to the ejector rod Dolly 1, the tooth surface 7-1 of long rack 7 is downward. In order not to make the long rack 7 sag, several roller sets 8 a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a transmission device for the thrust trolley of the punching machine, and to solve the problem of potential safety hazards in the existing thrust trolley of the punching machine

Images