CN105328434A - Low-floor bogie axle box press-fitting device and method - Google Patents
Low-floor bogie axle box press-fitting device and method Download PDFInfo
- Publication number
- CN105328434A CN105328434A CN201510618814.6A CN201510618814A CN105328434A CN 105328434 A CN105328434 A CN 105328434A CN 201510618814 A CN201510618814 A CN 201510618814A CN 105328434 A CN105328434 A CN 105328434A
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- Prior art keywords
- press
- axle box
- ring
- bearing
- fitting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/022—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using pressure fluids
Abstract
The invention discloses a low-floor bogie axle box press-fitting device and method. The low-floor bogie axle box press-fitting device comprises a measuring ring. The measuring ring is fixedly arranged on a press-fitting pressing ring. A hydraulic device comprises a hydraulic cylinder. A piston rod is arranged in the hydraulic cylinder. The piston rod moves to a pressing head of a press-fitting machine so as to jack and press the pressing head of the press-fitting machine. The pressing head of the press-fitting machine jacks and presses the press-fitting pressing ring in the axial direction. The press-fitting pressing ring jacks and presses an inner bearing ring of an axle box. The low-floor bogie axle box press-fitting method includes the steps that the surface of a bearing seat and the surface of an inner hole of a bearing are cleaned; the measuring ring is arranged; assemblies are hoisted together to a support of the press-fitting machine; the levelness is measured through a level gauge; the press-fitting machine is started; press-fitting is conducted while rotation is conducted; and after press-fitting is qualified, re-pressing is conducted. By the adoption of the low-floor bogie axle box press-fitting device and method, the structural design is simple, manufacturability is high, the process that press-fitting is conducted while waggling is conducted can be achieved, and it is avoided that the axle box is scrapped, so that cost is lowered, and efficiency is improved.
Description
Technical field
The present invention relates to rail vehicle technical field, be specially a kind of low-floor bogie axle box press-loading apparatus and pressing method.
Background technology
Tramcar truck journal box press-fits pressure assembling force in process, adhesive force all meets the requirements, and needs making to press-fit pressue-graph, therefore needs to measure its press-mounting stroke.
Low-floor bogie axle box press-fits to be needed to rock while press-fit according to technological requirement, dip stick is against axle box to measure press-mounting stroke in prior art, such shortcoming is the rotation that can affect axle box, if do not rock axle box to carry out press-fiting, internal bearings may be caused stuck, thus cause and press-fited rear axle casing and cannot rotate, but except axle box, wheel shaft does not have other positions can be used for the dip stick that reclines, recline so need a kind of press-loading apparatus can be convenient for measuring chi, and then measure press-mounting stroke.
Summary of the invention
The object of the invention is in order to the scene of solving cannot be rocked while the practical problem that press-fits, and design a kind of low-floor bogie axle box press-loading apparatus and pressing method, limit flanging can be realized and shake technique.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of low-floor bogie axle box press-loading apparatus, comprise hydraulic means, pressing head of packing press, press-fit pressure ring, measure ring, measurement ring is fixedly installed in and press-fits on pressure ring, described hydraulic means comprises a hydraulic cylinder, piston rod is provided with in hydraulic cylinder, piston rod is to pressing head of packing press motion thus pressing head of packing press is pressed on top, and pressing head of packing press axially top pressure press-fits pressure ring, press-fits the bearing inner race of pressure ring top last item case.
Described press-fit on pressure ring there is a ladder platform, measure ring set be located on this ladder table top, be fixedly connected with the shoulder rank of this ladder platform by bolt.
Described bolt has four.
The card of described measurement ring runs through and is provided with four irregularly-shaped holes, and four irregularly-shaped holes are uniformly distributed around measurement Ring current distribution.
The internal diameter of described measurement ring is more than or equal to the diameter of axle box bearing inner ring.
A kind of low-floor bogie axle box pressing method, comprises the following steps:
Step one, clean bearing block are surperficial with brearing bore, bearing block and brearing bore surface smear lubricating grease, and with industrial paper wiping mating surface;
Step 2, by end suit about corresponding for axle box axletree, protective sleeve is installed, press-fits pressure ring and measure ring;
Step 3, by the assembly in step 2 together handling on pressing machine support;
Step 4, use level measurement levelness, about axletree, hold error to be less than 3mm, ensure that hydraulic cylinder, axletree, axle box three center line overlap, and confirm and the interference without exception of each portion of pressing machine support;
Step 5, startup pressing machine, pressing head of packing press axially top pressure press-fits pressure ring;
Step 6, start to press-fit, press-fit while rotate, depending on pressure condition, increase and decrease mating surface lubricating grease at any time;
Step 7, press-fit qualified after, carry out multiple pressure.
Also need to carry out following steps before described step one:
Steps A, axletree inspection; Dip in 855 cleaning agent cleaning cart bearing housings with cloth, inspection trolley bearing housing, axle box treat that group portion faces is with or without bump injury, corrosion, burr, burr defect, and burr oilstone or abrasive paper for metallograph dip in oil polishing and eliminate;
Step B, bearing inspection; Check bearing package, well antirust, certificate is complete, and it is clear to mark, and Internal and external cycle working surface and mating surface must be bright and clean, without scuffing, impression, fray, corrosion defect;
Step C, dimensional measurement; With measurement calliper measurement size, axle bearing seat diameter must measure three cross sections, each section gauge four position diameters, and measuring position must differ 45 °, four, every cross section position arithmetic mean of instantaneous value is each cross section axle journal diameter, and the arithmetic mean of instantaneous value of diameter of section is axle bearing seat diameter; Measure axle box bore inner diameter with inside micrometer, axle box internal diameter must measure two cross sections, each section gauge four position internal diameters, and measuring position must differ 45 °, calculating mean value record;
Step D, installation bearing backstop circle.
Also need after described step 7 to carry out following steps:
The measurement of step e, end-play; After bearing press mounting, remove protective sleeve and press-fit ring, and removing bonnet, measurement of fit clearance limited block; Check that the end-play of bearing need meet relevant requirement.
After the present invention adopts said structure, there is following technique effect:
Structural design of the present invention is simple, and manufacturability is strong, can realize press-fiting limit flanging rolling technique, avoids axle box to scrap, thus cost efficiency.Be enough to solve the inertia problem that similar structures press-fits difficulty, reference can be provided for the product design of rail traffic vehicles similar structures bogie, be convenient to that manufacturer and user produce, inspection and maintenance, improve operational security thus, to material not damaged.
The present invention can use in a large number in low-floor bogie manufacture from now on, maintenance, the rail traffic vehicles manufacture of Creating Green environmental protection, maintenance environment.To be used widely in each tramcar Rail car manufacture enterprise, each tramcar base.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 shows prior art press-fit approach;
In Fig. 2, a, b, c show existing with press-fiting process;
Fig. 3 shows press-fit approach of the present invention;
In Fig. 4, a, b, c show and of the present inventionly press-fit process;
Fig. 5 shows the structure of measurement ring of the present invention;
Fig. 6 shows the A-A sectional view of Fig. 5;
Fig. 7 shows I, II, III 3 cross sections that axle bearing seat diameter must be measured;
Fig. 8 shows the position of each section gauge diameter;
Fig. 9 shows I, II two cross sections that axle box internal diameter must be measured.
Detailed description of the invention
For making object of the present invention and technical scheme clearly, below in conjunction with the embodiment of the present invention, technical scheme of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on described embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of protection of the invention.
A kind of low-floor bogie axle box press-loading apparatus, comprise hydraulic means, pressing head of packing press 1, press-fit pressure ring 2, measure ring 6, measurement ring 6 is fixedly installed in and press-fits on pressure ring 2, described hydraulic means comprises a hydraulic cylinder 7, be provided with piston rod 8 in hydraulic cylinder 7, piston rod 8 moves to pressing head of packing press 1 thus pushes up pressure pressing head of packing press 1, and pressing head of packing press 1 axially top pressure press-fits pressure ring 2, press-fit the bearing inner race that pressure ring 2 pushes up last item case 3, thus axle box 3 is press-fited back-up ring 5 place to axle box.
Tramcar truck journal box press-fits to be needed to press-fit pressue-graph, therefore needs to measure its press-mounting stroke.
As shown in Figure 1-2, the press-loading process of axle box 3 has requirement: press-fit in process and need to rock while press-fit.But dip stick 4 once lean against on axle box 3, then cannot rock axle box 3.If do not rock axle box 3 to carry out press-fiting, axle box 3 internal bearings may be caused stuck, thus cause and press-fited rear axle casing 3 and cannot rotate, but except axle box 3, wheel shaft not have other positions can be used for the dip stick 4 that reclines.
As shown in Figure 3-4, piston rod 8 moves to pressing head of packing press 1 thus pushes up pressure pressing head of packing press 1, and pressing head of packing press 1 axially top pressure press-fits pressure ring 2, press-fits the bearing inner race that pressure ring 2 pushes up last item case 3, thus axle box 3 is press-fited back-up ring 5 place to axle box.
As seen in figs. 5-6, the card of described measurement ring 6 runs through and is provided with four countersunk head screwed holes, and four countersunk head screwed holes are uniformly distributed around the center measuring ring 6, the card of described measurement ring runs through and is provided with four irregularly-shaped holes, and four irregularly-shaped holes are uniformly distributed around measurement Ring current distribution, ring 6 offer irregularly-shaped hole and can increase the bending resistance measuring ring 6 on the one hand and reduce weight simultaneously measuring.
Press-fit on pressure ring 2 and there is a ladder platform, measuring ring 6 is sheathed on this ladder table top, be fixedly connected with the shoulder rank of this ladder platform by bolt, can move axially with press-fiting together with pressure ring 2, namely the internal diameter of described measurement ring 6 equals the diameter of axle box 3 bearing inner race.
Preferably, described bolt has four.
Design like this, namely described measurement ring 6 is geo-stationary with axle box 3, dip stick 4, so, dip stick can be leaned against and measure on ring 6.Being against and measuring ring 6 with being against on axle box 3 is that starting coordinate position is different, and its movement travel is the same, thus ensures that axle box 3 can rock while press-fit.
For example, being against dip stick 4 origin coordinates on axle box 3 is (3,0,0), after having press-fited, its coordinate is (10,0,0), stroke is 7, and the origin coordinates be against on described measurement ring 6 is (1,0,0), and after having press-fited, its coordinate is (8,0,0), stroke is also 7, the data that we will obtain are exactly press-mounting stroke, are 7, so it is identical with the final effect being against axle box 3 to be against this measurement ring 6.
Press-fit in process when there is clamping stagnation, must stop press-fiting, and move back in time and unload axle box 3 and check.In the process press-fited, pressure assembling force need meet the requirement of regulation, and after axle box 3 is press-fit into place simultaneously, need carry out the pressurize operation of maximum adhesive force, the time of pressurize is not less than 5s.After having press-fited, in hand rotation axle box about 3 3-5 week, should rotate flexibly, be as good as sound, fricton-tight, come off, stuck phenomenon.
A kind of low-floor bogie axle box pressing method, comprises the following steps:
Step one, clean bearing block are surperficial with brearing bore, at bearing block and brearing bore surface smear lubricating grease, and with industrial paper wiping two mating surface;
Step 2, by end suit about corresponding for axle box axletree, protective sleeve 9 is installed and press-fits pressure ring, measure the assemblies such as ring;
Step 3, by the assembly in step 2 together handling on pressing machine support;
Step 4, use level measurement levelness, left and right end error is no more than 3mm, ensures that hydraulic cylinder, axletree, axle box three center line overlap, and confirms and the interference without exception of each portion of pressing machine support;
Step 5, startup pressing machine, pressing head of packing press withstands and press-fits pressure ring;
Step 6, dip stick are close to and press-fit measurement ring, start to press-fit process, press-fit while runner assembly, depending on pressure condition, increase and decrease mating surface lubricating grease at any time;
Step 7, press-fit qualified after, must multiple pressure be carried out, press-fit adhesive force and add that certain masterpiece is for the multiple pressure pressure of setting.
Also need to carry out following steps before described step one:
Steps A, axletree inspection; Dip in 855 cleaning agent cleaning cart bearing housings with cloth, inspection trolley bearing housing, axle box treat that group portion faces is with or without bump injury, corrosion, burr, burr defect, and burr oilstone or abrasive paper for metallograph dip in oil polishing and eliminate;
Step B, bearing inspection; Check bearing package, well antirust, certificate is complete, and it is clear to mark, and Internal and external cycle working surface and mating surface must be bright and clean, without scuffing, impression, fray, corrosion defect;
Step C, dimensional measurement; Dimensional measurement is carried out with measurement calliper, axle bearing seat diameter must measure I, II, III 3 cross sections, each section gauge four position diameters, measuring position must differ 45 °, four, every cross section position arithmetic mean of instantaneous value is each cross section axle journal diameter, the arithmetic mean of instantaneous value of diameter of section is axle bearing seat diameter, as shown in Figure 7,8; Measure axle box bore inner diameter with inside micrometer, axle box internal diameter must measure I, II two cross sections, each section gauge four position internal diameters, and measuring position must differ 45 °, calculating mean value record, as shown in Figure 8,9;
Step D, installation bearing backstop circle; Clean back-up ring after bearing with 855 cleaning agents, and use calico wiped clean; With left-hand rotation arm self-contained bearing after back-up ring marks with marking pen on " left side ", the sealing ring supporting with right-hand rotation arm and mark on " right side ", until after holding corresponding installation about axletree, wipe and mark; With induction heater, sealing ring is heated to 85 DEG C, after bearing while back-up ring heating, evenly brushes QNB50 with hairbrush at the axletree assembling position that left and right sealing ring is corresponding; During eddy-current heating actuator temperature to 85 ° C, put on heat insulation asbestos gloves, take out rapidly the seal ring set heated and be loaded on axletree corresponding position, and left-right rotation sealing ring 1 ~ 2 time, ensure that sealing ring and shaft shoulder end face are fitted.
Also need after described step 7 to carry out following steps:
The measurement of step e, end-play; After bearing press mounting, protective sleeve 9 need be removed and press-fit ring, and removing bonnet, measurement of fit clearance limited block; Check that the end-play of bearing need meet relevant requirement.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to right.
Claims (8)
1. a low-floor bogie axle box press-loading apparatus, it is characterized in that: comprise hydraulic means, pressing head of packing press (1), press-fit pressure ring (2), measure ring (6), measurement ring (6) is fixedly installed in and press-fits on pressure ring (2), described hydraulic means comprises a hydraulic cylinder (7), piston rod (8) is provided with in hydraulic cylinder (7), piston rod (8) is to pressing head of packing press (1) motion thus pressing head of packing press (1) is pressed on top, pressing head of packing press (1) axially top pressure press-fits pressure ring (2), press-fit the bearing inner race of pressure ring (2) top last item case (3).
2. low-floor bogie axle box press-loading apparatus according to claim 1, it is characterized in that: described in press-fit on pressure ring (2) there is a ladder platform, measuring ring (6) is sheathed on this ladder table top, measures ring (6) and is fixedly connected with the shoulder rank of this ladder platform by bolt.
3. low-floor bogie axle box press-loading apparatus according to claim 1, is characterized in that: described bolt has four.
4. low-floor bogie axle box press-loading apparatus according to claim 1, is characterized in that: the card of described measurement ring (6) runs through being provided with four irregularly-shaped holes, and four irregularly-shaped holes are uniformly distributed around the center measuring ring (6).
5. low-floor bogie axle box press-loading apparatus according to claim 1, is characterized in that: the internal diameter of described measurement ring (6) is more than or equal to the internal diameter of axle box (3) bearing inner race.
6. a low-floor bogie axle box pressing method, is characterized in that: comprise the following steps:
Step one, clean bearing block are surperficial with brearing bore, bearing block and brearing bore surface smear lubricating grease, and with industrial paper wiping mating surface;
Step 2, by end suit about corresponding for axle box axletree, protective sleeve is installed, press-fits pressure ring and measure ring;
Step 3, by the assembly in step 2 together handling on pressing machine support;
Step 4, use level measurement levelness, about axletree, hold error to be less than 3mm, ensure that hydraulic cylinder, axletree, axle box three center line overlap, and confirm and the interference without exception of each portion of pressing machine support;
Step 5, startup pressing machine, pressing head of packing press axially top pressure press-fits pressure ring;
Step 6, start to press-fit, press-fit while rotate, depending on pressure condition, increase and decrease mating surface lubricating grease at any time;
Step 7, press-fit qualified after, carry out multiple pressure.
7. low-floor bogie axle box pressing method according to claim 6, is characterized in that: also need to carry out following steps before described step one:
Steps A, axletree inspection; Dip in 855 cleaning agent cleaning cart bearing housings with cloth, inspection trolley bearing housing, axle box treat that group portion faces is with or without bump injury, corrosion, burr, burr defect, and burr oilstone or abrasive paper for metallograph dip in oil polishing and eliminate;
Step B, bearing inspection; Check bearing package, well antirust, certificate is complete, and it is clear to mark, and Internal and external cycle working surface and mating surface must be bright and clean, without scuffing, impression, fray, corrosion defect;
Step C, dimensional measurement; With measurement calliper measurement size, axle bearing seat diameter must measure three cross sections, each section gauge four position diameters, and measuring position must differ 45 °, four, every cross section position arithmetic mean of instantaneous value is each cross section axle journal diameter, and the arithmetic mean of instantaneous value of diameter of section is axle bearing seat diameter; Measure axle box bore inner diameter with inside micrometer, axle box internal diameter must measure two cross sections, each section gauge four position internal diameters, and measuring position must differ 45 °, calculating mean value record;
Step D, installation bearing backstop circle.
8. low-floor bogie axle box pressing method according to claim 6, is characterized in that: also need after described step 7 to carry out following steps:
The measurement of step e, end-play; After bearing press mounting, remove protective sleeve and press-fit ring, and removing bonnet, measurement of fit clearance limited block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618814.6A CN105328434A (en) | 2015-09-24 | 2015-09-24 | Low-floor bogie axle box press-fitting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510618814.6A CN105328434A (en) | 2015-09-24 | 2015-09-24 | Low-floor bogie axle box press-fitting device and method |
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| CN105328434A true CN105328434A (en) | 2016-02-17 |
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| CN201510618814.6A Pending CN105328434A (en) | 2015-09-24 | 2015-09-24 | Low-floor bogie axle box press-fitting device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964148A (en) * | 2021-02-07 | 2021-06-15 | 中国铁路武汉局集团有限公司武昌客车车辆段 | Heat-proof shaft tangible joint control method for assembling passenger car axle box bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112964148A (en) * | 2021-02-07 | 2021-06-15 | 中国铁路武汉局集团有限公司武昌客车车辆段 | Heat-proof shaft tangible joint control method for assembling passenger car axle box bearing |
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Address after: 210031 Nanjing province high tech Development Zone, Taishan Park North Pearl Road, No. 68 Applicant after: CRRC NANJING PUZHEN CO., LTD. Address before: 210031 Nanjing province high tech Industrial Development Zone, Taishan Park, North Pearl Road, No. 68 Applicant before: CSR NANJING PUZHEN Vehicles Co., Ltd. |
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Application publication date: 20160217 |