Structure and method for welding, assembling and positioning non-through-hole special-shaped connector of hydraulic oil cylinder
A special-shaped joint and hydraulic cylinder technology, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of deviation accumulation and large errors
Pending Publication Date: 2021-11-19
CHINA COAL BEIJING COAL MINING MACHINERY
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Problems solved by technology
Theoretically, it can fully meet the requirements. In fact, due to the deviation of the worker's line drawing, the error of the line drawing tool, and the deviation in the assembly, the deviation is accumulated, resulting in an excessive error
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Embodiment 1
[0045] Such as Figure 1 to Figure 3 As shown, use the existing part - hanging ring, plug one end into the hole of the rear joint, and the other end into the bottom hole of the cylinder. After the liquid inlet pipe is assembled, use a sharpened stone pencil to cling to the surface of the rear joint. Draw the outline. Take off the liquid inlet pipe assembly, remove the hanging ring, and weld the liquid inlet pipe assembly according to the drawn outline. Due to the thin lines drawn and welded according to the contour lines, the error of the worker's operation is small, and the error after welding is less than 1mm, which fully meets the requirements of the drawing process.
[0046] The specific technical points are:
[0047] 1) To solve the error caused by marking and positioning, first insert the parts into the cylinder hole for positioning, and then mark.
[0048] 2) There is no need to drill through welding plugs, and solve the problems of drilling iron filings affecting cl...
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The invention discloses a structure and method for welding, assembling and positioning a non-through-hole special-shaped connector of a hydraulic oil cylinder. Firstly, holes are drilled in a non-through-hole special-shaped rear connector and the bottom of the oil cylinder; then, one end of an existing hanging ring is plugged into a rear connector hole, the other end of the existing hanging ring is plugged into the hole of the bottom of the oil cylinder, and a liquid inlet pipe is assembled; and afterwards, the surface of the rear connector is tightly attached, a contour line is drawn, a liquid inlet pipe assembly is taken down, the hanging ring is taken down, and the rear connector and the bottom of the oil cylinder are installed and welded according to the drawn contour line. The diameter phi of the oil cylinder ranges from 140 mm to 630 mm. Due to the fact that drawn fine lines are installed and welded according to the contour line, the error of worker operation is small, the error after welding is smaller than 1 mm, the requirement of the drawing technology is completely met, and the problems that errors are caused by lineation positioning in the early stage, and cleanliness is affected by drilling scrap iron are solved.
Description
technical field [0001] The invention relates to a processing technology for a column and a jack hydraulic cylinder of a hydraulic support used in a coal mine, in particular to a structure and method for welding, assembling and positioning of a non-through-hole special-shaped joint of a hydraulic cylinder. Background technique [0002] The dimensional accuracy and cleanliness of the column and jack hydraulic cylinders are extremely important for the key hydraulic system of the hydraulic support. Its accuracy is related to the subsequent installation and use, and the cleanliness is related to the reliable use of the entire hydraulic system. [0003] In the prior art, conventional oil cylinder joints are generally drilled through holes. After drilling through, the holes are welded and sealed at the top of the joint, which is prone to welding defects and increases the quality risk. [0004] Non-through-hole special-shaped joints generally use scribed positioning drilling, which ...
Claims
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IPC IPC(8): B23K37/04B23K37/00
Inventor 王士清刘超白新龙邹靖涵谢静陈红
Owner CHINA COAL BEIJING COAL MINING MACHINERY