A processing method for large-depth tapered pin holes of laying 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 processing method for large-depth tapered pin holes of rack-laying equipment. Background technique [0002] With the rapid development of the current railway construction, the railway construction equipment has been developed rapidly, especially the large-scale railway laying construction equipment suitable for the current high-speed and heavy-duty railway construction has been greatly developed. At present, most of the large-scale railway laying construction equipment is more than 25 meters long and 2.5 meters wide, and it is the main structure of the steel structure. However, there are generally problems such as uneven gaps between steel beam joints and increased deflection during construction under load, which affects safety. At present, the main method in China is to reduce the gap at the joint of steel beams, usually by improving the accuracy and coaxiality of the pin holes at the connection to reduce the connection gap...

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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