Design method for segmented cylinder body full penetration welding structure of large hydraulic cylinder
A design method and hydraulic cylinder technology, which is applied to welding equipment, workpiece edge parts, metal processing equipment, etc., can solve the problem of welding slag accumulation at the bottom of the weld seam, etc., to ensure welding quality, save time for docking, and save machine tools The effect of the amount of processing
Pending Publication Date: 2021-04-16
MCC SFRE HEAVY IND EQUIP
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Problems solved by technology
[0006] The purpose of the present invention is to provide a design method for the full-penetration structure of the segmented cylinder body of a large hydraulic cylinder, which solves the problem of impenetrable welds at the bottom of the weld caused by the traditional segmented cylinder body design method after welding. The accumulation of welding slag at the bottom of the seam leads to the existence of welding defects
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[0030] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] The invention provides a design method for a full penetration structure of a segmented cylinder block of a large hydraulic cylinder, which is specifically implemented according to the following steps:
[0032] Step 1: Design both ends of the top opening of the segmented cylinder bottom as semi-welded grooves, and then design the socket and socket ends:
[0033] The inner diameter of the socket and socket at the bottom of the segmented cylinder is: ΦD-2h, D is the inner diameter of the welding cylinder, h is the distance between the welding defect concentration area at the bottom of the weld and the inner diameter of the cylinder, (in fact, the conventionally designed weld defect concentration area is determined by Figure 1a distance from cylinder bore The outer h region of D becomes Figure 2a distance from cylinder bore The inner...
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The invention discloses a design method for a segmented cylinder body full penetration welding structure of a large hydraulic cylinder. The design method comprises the following steps that firstly, two ends of a top opening of a segmented cylinder bottom are designed into semi-welding grooves, and then a segmented cylinder bottom socket spigot is designed; the two ends of the bearing face of the segmented cylinder body and the top of the cylinder bottom are designed to be half welding grooves corresponding to the semi-welding grooves in the two ends of the top of the segmented cylinder bottom, then a segmented cylinder body socket spigot is designed on the inner side of the segmented cylinder body, the segmented cylinder body socket spigot is aligned and inserted into the segmented cylinder bottom socket spigot along a center line of the segmented cylinder bottom, and the two half welding grooves are connected to form a segmented oil cylinder; the groove connecting positions of the segmented cylinder body and the segmented cylinder bottom which are in butt joint are welded; the welded oil cylinder is subjected to finish machining. The oil cylinder designed through the method does not have defect areas at the bottom of a butt welding seam of the cylinder bottom and the cylinder body, and the service life of a large cylinder body is obviously prolonged.
Description
technical field [0001] The invention relates to the technical field of heavy machinery design, in particular to a design method for a full penetration structure of a segmented cylinder block of a large hydraulic cylinder. Background technique [0002] The large cylinder is an important working part commonly used in heavy machinery, which is used to convert the hydraulic energy of the hydraulic system into the kinetic energy of linear motion such as pistons and plungers. Cylinder blocks with an inner diameter greater than 1 meter are common in heavy machinery. In the actual production of the factory, considering many factors such as forging process, machining and manufacturing cost, the large hydraulic cylinder is often divided into three sections of cylinder bottom, cylinder body and cylinder port for design; [0003] Traditional segmented design methods such as Figure 1a ~ Figure 1d As shown in the figure, the upper part of the cylinder bottom and the bottom of the cyli...
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IPC IPC(8): B23K33/00B23K31/02
Inventor张昂荣段粉马玉杰
OwnerMCC SFRE HEAVY IND EQUIP