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Back gas protection device

A back gas protection device and back gas technology, applied in plasma welding equipment, metal processing equipment, welding equipment, etc., can solve problems such as cylinder gaps, achieve convenient operation and reduce labor costs

Active Publication Date: 2018-10-30
CIMC JINGMEN HONGTU SPECIAL AIRCRAFT MFG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention is to provide a back air protection device to solve the problems in the prior art that there is a gap between the back air box and the cylinder due to the lack of upward lifting force.

Method used

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Embodiment Construction

[0018] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various changes in different embodiments without departing from the scope of the present invention, and that the description and illustrations therein are illustrative in nature and not limiting. this invention.

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 and figure 2 As shown, the back air protection device 10 of this embodiment is arranged on the central axis 21 arranged transversely of the bracket 20 in the cylinder, and the back air protection device 10 includes: a support rod 11, a telescopic rod 12 and a pulley assembly.

[0021] The support rod 11 is hinged with the central axis 21 of the support 20;

[0022] Further, the support rod 11 i...

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Abstract

The invention provides a rear gas protection device. The rear gas protection device is arranged on a support in a barrel body and comprises a supporting rod, a telescopic rod and a pulley component, wherein the supporting rod is hinged to the support; the lower end of the supporting rod is provided with a fixed balance weight; the lower end of the telescopic rod is movably inserted into the upper end of the supporting rod; the upper end of the telescopic rod is fixedly connected with a rear gas box; the rear gas box is resisted against the to-be-welded part of the inner wall of the barrel body; the pulley component comprises at least one fixed pulley, a rope and a sliding balance weight; the fixed pulley is fixedly arranged on the supporting rod; one end of the rope is fixedly tied on the telescopic rod; the other end of the rope is connected with the sliding balance weight after being wound on the fixed pulley, so that the telescopic rod has a constant pulling force along the length direction of the upper end of the supporting rod; therefore the rear gas box can cling to the to-be-welded part of the inner wall ring of the barrel body all the time; labor cost is reduced; and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of plasma welding, in particular to a pulley type plasma arc welding back gas protection device. Background technique [0002] Metal plasma welding is single-sided welding and double-sided forming. During welding, in addition to the high-temperature molten pool on the front of the weld needs to be protected, measures should also be taken on the back of the weld to block the oxidation of oxygen in the air to the weld. Argon is usually used as the protective medium. The device that can be used to implement gas protection on the back side of the weld is called "back gas protection device". [0003] During the plasma welding process of the girth seam of the thin-walled barrel joint of the container tanker, it is necessary to protect the back of the girth weld with "back gas protection device" to prevent oxidation of the weld. [0004] However, the traditional technology has the following disadvantages: due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K10/02
CPCB23K10/02
Inventor 易贤金顾继武童盼龙朱汉权黄发萍
Owner CIMC JINGMEN HONGTU SPECIAL AIRCRAFT MFG
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