Rear-axle folding and unfolding device for spiral pipe welding unit
A technology of spiral welded pipe and rear axle, which is applied in the field of rear axle adjustment device of spiral welded pipe unit, can solve the problems of non-adjustable reversing speed, overshoot of rear axle angle, hysteresis, etc., and achieve the effect of improving process requirements and meeting stable welded pipe forming
Inactive Publication Date: 2014-03-12
JIANGSU TONGYU STEEL PIPE GRP
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Benefits of technology
This technology helps keep your steel pipes steady while they form during manufacturing by controllably slow down or unrolling them slowly over time with certain components that help it work better at create stronger connections between sections of metal tubulars.
Problems solved by technology
This patented describes a method used during manufacturing of spirally weldled pipes units called CWU'S®. These tubular components have curved surfaces along their entire length due to the use of different types of materials like stainless steel plates on them. To prevent damage from these damaging effects caused by excessive pressure applied while winding up metal strips onto the inside surface of the tube, there must also allow for flexibility in setting certain distances within specific ranges based upon the desired shape of the component being formed. Additionally, if the spacing between two intersecting point meets incorrect values, then the process becomes difficult because the space around the circumference of one endpoint needs to be filled without leaving behind material. Therefore, automatic weld techniques such as hydrostatic torch weldings require precise positioning and rotation angles.
Method used
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Embodiment 1
[0021] A retractable rear axle device of a spiral welded pipe unit, including a rear axle assembly, a swing cylinder assembly, and a proportional reversing assembly;
[0022] The rear axle assembly is a rigid platform and is placed horizontally. A rear axle swing cylinder connecting lug 1 perpendicular to the rear axle assembly is welded in the middle of the side. The rear axle swing cylinder connecting lug 1 is provided with a round hole. The spherical top of the swing cylinder assembly is also provided with a round hole, the rear axle assembly and the swing cylinder assembly are inserted into the round hole at the spherical top, and the rear axle swing cylinder is connected to the round hole of the lug 1, two The connecting cylindrical pin 2 in the round hole is fixed, and a radial cancellation positioning plate 3 inserted into the connecting cylindrical pin 2 is installed on the horizontal upper side closely fitting with the connecting lug 1 of the rear axle swing cylinder, so
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The invention relates to a rear-axle folding and unfolding device for a spiral pipe welding unit. The rear-axle folding and unfolding device comprises a rear axle component, an oscillating cylinder component and a proportional reversing component, wherein the rear axle component is horizontally placed, a rear axle and oscillating cylinder connection lug is welded at the middle of the side surface of the rear axle component, a round hole is formed in the rear axle and oscillating cylinder connection lug, another round hole is formed in the spherical top end of the oscillating cylinder component, the rear axle component and the oscillating cylinder connection lug are fixed through a connection cylindrical pin inserted into the two round holes, a pin positioning plate is inserted along the radial direction of the connection cylindrical pin, and an axle folding oil circuit inlet and an axle unfolding oil circuit inlet of the oscillating cylinder component are respectively connected with two oil circuit input/output ports of the proportional reversing component through an axle folding oil pipe and an axle unfolding oil pipe. The rear-axle folding and unfolding device has the following characteristics: axle folding and unfolding rates can be set through the proportional reversing component, shaping of welded pipes is stabilized, and weld joint quality is improved; and overshooting of a rear axle is prevented, a controllable shaping trend can be obtained, and violent axle folding and unfolding are avoided.
Description
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