Repair method of connecting lug

A repair method and technology for connecting ears, applied in welding equipment, workpiece edge parts, metal processing equipment, etc., can solve problems such as deformation and distortion of connecting ears, insufficient strength and rigidity, and increased labor intensity, achieving less maintenance and serious solutions. Deformation and fracture, high production efficiency

CN104400242AActive Publication Date: 2015-03-11GUIZHOU PANJIANG MINING MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-03-11

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Abstract

The invention discloses a repair method of a connecting lug. The connecting lug, a flitch, a reinforcing plate, a rib plate, a process shaft and a distance pad are involved; the repair of the connecting lug is realized by virtue of the repair process of chamfering, weld line working, flitch welding, process shaft and distance pad penetrating, and then rib plate and reinforcing plate welding. According to the repair method of the connecting lug, the broken connecting lug is welded and reinforced by use of the flitch, the reinforcing plate and the rib plate of simple structures, and an airtight reinforcing cavity structure is formed, and therefore, the problems of serious deformation and breakage in the prior art are effectively solved and the connecting lug is enabled to be high in strength, good in stiffness, convenient to manufacture and maintain, less in maintenance and high in production efficiency and have the characteristic of simple structure; the process shaft and the distance pad are adopted to effectively guarantee the accuracy of repair and ensure the accuracy of the mounting position; the repair method is simple.
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Description

technical field

[0001] The invention belongs to the field of coal machinery, in particular to a high-strength repair method for a connecting ear. Background technique

[0002] The roadheader is a machine used to dig a straight underground roadway. There is a shovel on the roadheader. The body of the roadheader and the shovel are connected by two connecting ears. During the underground operation of the roadheader, the body of the roadheader and the shovel Due to the tension and fatigue stress of the shoveling plate, the connecting ear is subjected to excessive force during the lifting of the well, causing serious deformation and distortion, and also fractures. The strength and rigidity are seriously insufficient, and the damage is frequent, resulting in a decrease in production efficiency and an increase in labor intensity. Large, the equipment cannot be wasted after the breakage, and an effective way can be selected for repair. Contents of the invention

[0003] The techn...

Examples

Embodiment Construction

[0016] like Figure 1~2 As shown, a method for repairing a connection ear is characterized in that it includes a connection ear 1, a sticking plate 2, a reinforcement plate 3, a rib plate 4, a process shaft 5 and a distance pad 6, and includes the following steps:

[0017] (1) Flatten the fracture surface of the broken connecting ear 1, process the welding groove, and process the welding positions on the veneer 2, reinforcement plate 3 and rib plate 4 into grooves;

[0018] (2) Use the finished connecting ear 1 as a template to improve the accuracy of the welding position, and mark the welding position of the broken part of the connecting ear 1 on the body, so as to facilitate welding the positions of the pasting plate 2, reinforcement plate 3 and rib plate 4;

[0019] (3) Pass the process shaft 5 through the left and right ears, insert the broken connecting ear 1 and two plates on the two ends of the process shaft 5 respectively, and insert the distance pad 6 between the two ...