Machining method for large-depth taper pin holes of track laying and bridge erecting equipment

Abstract

The invention discloses a machining method for large-depth taper pin holes of track laying and bridge erecting equipment. The track laying and bridge erecting equipment is formed by connecting more than two lathe body sections. The adjacent lathe body sections are connected through the taper pin holes of connector bodies. The method comprises the machining steps that first cover plates, second cover plates, male lug plates, female lug plates, first connecting flanges and second connecting flanges are machined at first; the multiple male lug plates are welded to the first cover plates correspondingly to form male connector bodies, and the multiple female lug plates are welded to the second cover plates correspondingly to form female connector bodies; the male lug plates and the female lug plates are bored primarily to form the pin holes; stepped pin holes are bored fine; assembled taper hinge pin assemblies are installed into the stepped holes fine bored in the male and female connector bodies; intermittent welding is carried out between all taper pin sleeves and the corresponding male and female lug plates to form the taper pin holes of the connector bodies. The method is high in feasibility and operability, the lathe body sections are fixedly connected through the taper hinge pins, the locating precision is further improved, clearance fit is achieved, and then the strength and the safety performance of connection of the track laying and bridge erecting equipment are improved.

Description

Technical field [0001] The invention relates to a method for processing large-depth tapered pin holes of frame laying equipment. Background technique [0002] With the rapid development of current railway construction, railway construction equipment has been developed rapidly, especially large-scale railway laying and erecting construction equipment adapted to the current high-speed and heavy-duty railway construction. At present, most of the large-scale railway laying and erecting construction equipment is 25 meters long and 2.5 meters wide and is the main structure of steel structure. However, the equipment generally has the problem of uneven gap between steel beam joints and increased deflection during load construction, which affects safety. At present, the method of reducing the gap at the joint of the steel beam is mainly used in the country. Usually, the accuracy and coaxiality of the pin hole at the connection are improved to reduce the connection gap. However, this met...

AI Technical Summary

Problems solved by technology

However, this method requires multiple positioning drilling and circle calibration for the pin hole, which has a long production cycle and high cost

At the same time, there are high requirements for operation and positioning during assembly, which is difficult to control

Once the alignment is not correct for assembly, the pins and pin holes will be damaged and need to be repaired, which will consume a lot of time and manpower

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