B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
78/46
B23K 20/00 (2006.01) B23K 20/02 (2006.01) B23K 20/26 (2006.01) B23K 37/08 (2006.01) E01B 29/42 (2006.01)
Patent
CA 1274407
ABSTRACT OF THE DISCLOSURE A small-sized gas pressure welding machine for rails comprises a pressure application unit and an excess metal punching unit. The pressure application unit includes a positioning bed disposed along the rail feet of rails to be welded together, a movable pressure application clamp mecha- nism provided at one end of the positioning bed and a stationary pressure application clamp mechanism provided at the other end of the positioning bed. The movable clamp mechanism clamps the rail foot of one of the rails and pro- vides an abutting pressure. The stationary clamp mechanism clamps the rail foot of the other rail and receives the abutting pressure. The excess metal punching unit is mounted on the other end of the positioning bed to be fitted on the other rail from the railhead thereof and is capable of being mechanically and detachably coupled to the pressure applica- tion unit and is provided with an upper excess metal punch- ing mechanism for punching excess metal off the railheads, rail webs and rail foot upper surfaces of abutted end por- tions of the rails in one direction. On the other hand, the movable pressure application clamp mechanism is provided with a lower excess metal punching mechanism for punching excess metal off the rail foot lower surfaces of the rails in the other direction opposite to the aforementioned one direction.
549510
Hagiwara Kenzo
Kitagawa Kunio
Ohara Muneyuki
Oishibashi Hirotsugu
Shimizu Kimio
Hakusan Seisakusho Co. Ltd.
Macrae & Co.
Railway Technical Research Institute
Zenyo Co. Ltd.
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