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Patent
CHANGCHUN RAILWAY VEHICLES Co. | Date: 2011-07-12

The utility model provides a frame assembly base for frame structures, being characterized in that, a longitudinal beam and a transverse beam, the transverse beam and an intermediate beam, the intermediate beam and a transverse reinforcing beam, and the longitudinal beam and the transverse reinforcing beam are all connected by bolts, and connecting blocks are provided at connections between the longitudinal beam and the transverse beam and between the longitudinal beam and the transverse reinforcing beam. In the present utility model, bolt connections are used throughout the base, and connecting blocks are provided at the connections between the longitudinal beam and the transverse beam and between the longitudinal beam and the transverse reinforcing beam, so that frame widths can be adjusted to be adapted to assembling of frames having different widths by adjusting widths of the connecting blocks, thereby saving manufacturing costs of tooling, reducing difficulties of tooling storage and management. The base is detachable to facilitate storage and management.


Patent
Changchun Railway Vehicles Co. | Date: 2013-05-24

A processing method for variable drilling-depth, deep-hole chip breaking and removal, comprising: assigning a deep-hole drilling variable value; if the value is correct, drilling a first hole depth; otherwise, alarming and reassigning the value; determining whether the first hole depth is greater than a terminal drilling depth and whether the first hole depth is greater than the defined chip breaking depth; if yes, processing chip breaking and drilling to the currently designated drilling depth and then returning to a safe position for chip removal; determining whether the currently designated drilling depth is greater than a smallest drilling depth, if yes, decreasing the drilling depth progressively according to a designated drilling depth proportion, otherwise, designating the currently designated drilling depth as a new smallest drilling depth and calculating the coordinate of the next drilling depth. Drilling deep hole in accordance with this method can improve efficiency and guarantee drilling safety.


Patent
Changchun Railway Vehicles Co. | Date: 2011-12-02

A movable measuring ruler device for measuring an external contour precision of a vehicle body comprising a movable trolley with a rail and an upright detecting ruler, wherein the upright detecting ruler is fixed on a frame of the movable trolley. The advantageous effect of the present invention lies in that measurement of external contour or intended parts of the vehicle body can be accomplished during rail traveling of the movable trolley, which is installed in parallel with the longitudinal center axis of a vehicle body and includes an upright detecting ruler, thereby a quick and accurate measurement is achieved.


A weight reduction re-profiling process after dynamic balance for a wheel set of a passenger train, comprising the following steps: designing a spindle end clamp and a tailstock end clamp according to structures of screw holes on an end of train axle; fixing the spindle end clamp to the train axle; hanging up the wheel set, aligning a center hole of the spindle end clamp with a top tip of a spindle end of a lathe, and inserting a handle portion of the spindle end clamp into a drive plate hole; aligning an eccentric hole of the tailstock end clamp with a scribed line on an end for weight reduction after dynamic balance by visual inspection, then sheathing the tailstock end clamp on the train axle, aligning a top tip of tailstock of the lathe with the eccentric hole of the tailstock end clamp, and tightening them; and so on.


A full butt joint structure of a connection joint between a side frame and a cross beam of a bogie frame, characterized in: the side frame is connected to the cross beam by a connecting seat to realize the full butt joint, a side frame connecting end of the connecting seat, a transport column and a side frame inside vertical plate form a plate-plate butt joint structure, and a cross beam connecting end of the connecting seat and the cross beam form a tube-tube butt joint structure. An assembly welding process comprises: the connecting seat is assembled and welded to the cross beam; a cross beam unit is assembled and welded; the connecting seat is assembled and welded to the transport column and the side frame inside vertical plate; a side frame strengthen partition plate is assembled and welded to an upper plate; and the bogie frame is welded.

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