CN100469516C

CN100469516C - Power car wheel pair gear box side disk-braking press mounting technology

Info

Publication number: CN100469516C
Application number: CNB200710056135XA
Authority: CN
Inventors: 刘孝峰
Original assignee: Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2007-10-10
Filing date: 2007-10-10
Publication date: 2009-03-18
Anticipated expiration: 2027-10-10
Also published as: CN101125401A

Abstract

The present invention provides a press mounting art of moving wheel to side brake disk of gear case; the semi-transition nylon is coated on the shaft body of the gear case which is preinstalled with a brake disk and then arranged and fastened on the rotary bracket, and the shaft center is adjusted to the same level with the center of the press machine; the position nylon with reticle is arranged and fastened on the shaft diameter; a transition device is arranged at the shaft end and then positioned at the shaft end with a position pin, one end of the line set rule is closed to the face of brake disk, while the other end is placed on the position nylon with reticle; when in the press mounting, the press machine supplies press to the ball press steel which then transmits the press to the transition press steel, the press finally reaches the shaft end; when the end face of line set rule is rightly engaged with the reticle on the position nylon, the press mounting procedure is completed. Under the condition of equal cost, the present invention applies the prior common wheel to fulfill the press mounting of the press machine, thereby assuring the efficiency of press mounting and the pass rate is 100 percent after press mounting.

Description

The motor-car wheel is to gear box side disk-braking press mounting technology

Technical field

The present invention discloses a kind of motor-car wheel to gear box side disk-braking press mounting technology, belongs to mechanical part frock technology field.

Background technology

In the locomotive production process, motor-car wheel press-fits brake disc (referring to Fig. 2) to the next door of gear-box and implements the comparison difficulty, took turns press-fiting of brake disc is to be benchmark with the axle center in the past, and existing because motor-car is taken turns having assembled gear-box, axle center can not be re-used as the disk-braking press mounting benchmark; The motor-car wheel is turned on one's side by the influence of gravity off-centre in carrying out the disk-braking press mounting process easily to an end of last gear-box place axletree; Press-fit and be easy to generate diameter of axle distortion in the process and clash the axle accident; Because brake disc is distant from axle head, general canonical measure gage can't be measured.

Summary of the invention

The present invention can not realize that in order to solve press-loading process in the past the motor-car wheel press-fits the difficult problem of brake disc to gear box side, a kind of motor-car wheel is disclosed to gear box side disk-braking press mounting technology, under the situation that does not improve production cost, utilizing existing common Press Fit Device for Wheelset to finish press-fits, guaranteed to press-fit efficient, and guaranteed that press-fiting qualification rate is 100%.

Technical solution of the present invention comprises following key step:

1) half transition nylon jacket is placed on the axletree axle body of motor-car band gear-box, and brake disc is contained on the half transition nylon jacket in advance;

2) will load onto and state component parts and hang on press-fiting, the retaining mechanism at locking axletree wheel seat place with mobile runing rest; The height of adjusting mobile runing rest guarantees that axle center is consistent with the central horizontal of forcing press;

3) will be installed on the diameter of axle with the location nylon jacket of groove and locking;

4) at axle head transition apparatus is installed, is inserted on the axle shaft end by alignment pin and locatees, forcing press is exerted pressure, and pressure head is passed to pressure on the spherical foundary weight, pressure is passed on the transition foundary weight by spherical foundary weight again, and pressure passes on the axle head more then;

To press-fit when 5) press-fiting with positioning rule one end of stepping on the line and lean against on the brake disk surface, the other end rides on the location nylon jacket of band groove, observes to press-fit after the positioning rule end face of stepping on the line aligns with groove on the nylon jacket of location to finish.

The present invention with respect to the progress that existing frock technology has is: the motor-car axletree of band gear-box is brake disk mounted in advance, can realize that brake disc hole and axletree dish seat just draw, and have guaranteed that axletree does not damage.Axle center and level consistent with the pressing machine center, and the assurance workpiece is not turned on one's side.Increase special-purpose location nylon jacket and realize that brake disc correctly press-fits, and adopt transition apparatus protection axle shaft end not deform.Under the situation that does not improve production cost, utilize existing common Press Fit Device for Wheelset to finish and press-fit, guaranteed to press-fit efficient, and guaranteed that press-fiting qualification rate is 100%.

Description of drawings

Fig. 1 press-fits the process schematic diagram for technology of the present invention;

Fig. 2 press-fits schematic diagram after finishing for technology of the present invention;

Fig. 3 press-fits the back instrumentation plan for technology of the present invention;

Fig. 4 is a technology axle head transition apparatus schematic diagram of the present invention.

The specific embodiment

Process application of the present invention is on Yangpu, Shanghai line (251), and is fine through press-fiting test effect, adapts to batch jobs, and qualification rate is 100%.

Embodiment

1, at first, go up placement half transition nylon jacket 8 (referring to Fig. 1), and brake disc 7 is contained on the half transition nylon jacket 8 in advance at the axletree axle body 14 (referring to Fig. 2) of motor-car band gear-box.After half transition nylon jacket 8 was placed on the axle body 14, its outside dimension should be about 0.3mm for a short time than a dish seat outside dimension, can guarantee that brake disc hole and axletree dish seat draw well just preventing to produce an axle accident in an opposite direction press-fiting process.

2, load onto and state component parts and hang on press-fiting with mobile runing rest 6 (see figure 1)s, the retaining mechanism 5 at locking axletree wheel seat 11 (see figure 2) places prevents topples over.And by the height assurance axle center of the mobile runing rest 6 of adjustment and the center basically identical and the level of forcing press.

3, will be installed on the diameter of axle 10 (see figure 2)s with location nylon jacket 4 (see figure 1)s of groove and locking, and must guarantee to surpass 0.05mm by the tight local seam that dodges with the shaft shoulder 16.

4, in axle head 17 (see figure 2)s transition apparatus 2 is installed, is prevented that the diameter of axle produces distortion in press-fiting process.Alignment pin 22 (see figure 4)s that this device is manufactured by red copper are inserted on three screw threads on axletree axle body 14 ends, and alignment pin 22 is about 0.5mm with the gap of screw thread.Press ram 3 is passed to pressure on the spherical foundary weight 20 when press-fiting, and pressure is passed on the transition foundary weight 21 by spherical foundary weight again, and pressure passes on the axle head more then.Because the function that freely swings between spherical foundary weight and the transition foundary weight can guarantee that pressure passes on the axle shaft end well, also prevented to press-fit the axle accident in an opposite direction that produces in the process when preventing diameter of axle generation distortion.

To press-fit when 5, press-fiting with positioning rule 1 (see figure 1) one end of stepping on the line and lean against on the brake disk surface, the other end rides on the location nylon jacket 4 of band groove, observes to stop immediately press-fiting after the positioning rule end face of stepping on the line aligns with groove on the nylon jacket of location.The length dimension of the positioning rule of stepping on the line equals brake disk surface and adds the size of location nylon jacket groove to the axle shaft shoulder to the size of the shaft shoulder, and the dimensional accuracy of the positioning rule of stepping on the line is ± 0.1mm.

6, adopt the magnetic force gauge stand to change system into magnetic force slip gauge 19 (see figure 3)s of certain-length, inhale on brake disk surface, solved the problem of canonical measure chi 18 stroke deficiencies.

Claims

1, a kind of motor-car wheel mainly may further comprise the steps gear box side disk-braking press mounting technology:

2) above-mentioned component parts is hung on press-fiting the retaining mechanism at locking axletree wheel seat place with mobile runing rest; The height of adjusting mobile runing rest guarantees that axle center is consistent with the central horizontal of forcing press;

4) at axle head transition apparatus is installed, is inserted on the axle shaft end by alignment pin and locatees, forcing press is exerted pressure, and pressure head is passed to spherical foundary weight with pressure, pressure is passed to the transition foundary weight by spherical foundary weight again, and pressure passes on the axle head more then;