CN111390530A - Press mounting method for bearing of wheel axle box of railway vehicle - Google Patents

Press mounting method for bearing of wheel axle box of railway vehicle Download PDF

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Publication number
CN111390530A
CN111390530A CN202010294379.7A CN202010294379A CN111390530A CN 111390530 A CN111390530 A CN 111390530A CN 202010294379 A CN202010294379 A CN 202010294379A CN 111390530 A CN111390530 A CN 111390530A
Authority
CN
China
Prior art keywords
bearing
axle
diameter
wheel
size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010294379.7A
Other languages
Chinese (zh)
Inventor
王俊玖
张钰涛
尹德猛
李增楼
史大伟
陈恒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Jingche Rail Transit Vehicle Equipment Co ltd
Original Assignee
Hebei Jingche Rail Transit Vehicle Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei Jingche Rail Transit Vehicle Equipment Co ltd filed Critical Hebei Jingche Rail Transit Vehicle Equipment Co ltd
Priority to CN202010294379.7A priority Critical patent/CN111390530A/en
Publication of CN111390530A publication Critical patent/CN111390530A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines 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
    • B23P19/02Machines 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines 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

Abstract

The invention discloses a rail vehicle axletree box bearing press mounting method, which comprises the steps of measuring the inner diameter size of a bearing in a bearing box, simultaneously sequentially collecting and recording the inner diameter size of each bearing, and storing the bearings into a storage warehouse to be pressed according to the recording sequence; measuring, collecting and recording the outer diameter of the axle journal of the wheel set; and thirdly, according to the measured outer diameter of the axle, selecting the size matched with the outer diameter of the axle through a database of the inner diameter of the bearing, selecting the bearing corresponding to the outer diameter of the axle from a storage library, and carrying out corresponding press mounting on the axle and the bearing. The axle box bearing press mounting method adopts a selective matching mode to carry out the press mounting of the axle box bearing, can effectively ensure that the matching size is within the tolerance range, can greatly improve the press mounting effect, ensures the press mounting quality and prolongs the service life of the bearing after press mounting.

Description

Press mounting method for bearing of wheel axle box of railway vehicle
Technical Field
The invention relates to the technical field of bearing press-fitting, in particular to a method for press-fitting a bearing of a wheel axle box of a railway vehicle.
Background
The conventional rail vehicle wheel axle box bearing press mounting adopts a mode of directly press mounting an axle box bearing and a wheel pair, a standard bearing and a qualified wheel pair are selected for directly press mounting, the press mounting mode is poor in reliability and high in rejection rate, and the matching size cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a method for press mounting a bearing of a wheel axle box of a railway vehicle, which aims to solve the problems in the prior art, improve the press mounting matching precision and reliability of the bearing and an axle, reduce the rejection rate and prolong the service life of the bearing.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a rail vehicle wheel axle box bearing press-fitting method, which specifically comprises the following steps:
measuring the inner diameter of a bearing in a bearing box, simultaneously sequentially collecting and recording the inner diameter of each bearing, and storing the bearings into a storage warehouse to be pressed according to the recording sequence;
measuring the outer diameter of the axle journal of the wheel set, and collecting and recording the measured outer diameter;
and thirdly, selecting the size matched with the outer diameter size of the axle through a database of the inner diameter size of the bearing according to the measured outer diameter size of the axle, selecting the bearing corresponding to the outer diameter size of the axle from a storage library, and carrying out corresponding press mounting on the axle and the bearing.
Preferably, in the first step, the inner diameter of the bearing is measured by a handheld PDA data collector, and a database of the inner diameter of the bearing is entered.
Preferably, in the first step, after the measurement, the mechanical arm pair for automatic stacking is controlled by a computer to take the bearing away from the conveying belt and transport the bearing to a storage warehouse of the bearing, and when the bearing is assembled and selected, the mechanical arm picks the bearing with the corresponding size from the storage warehouse, rotates for 90 degrees and then is placed on the conveying belt.
Preferably, the robot arm follows a first-in first-out operation principle when grasping the bearings of the corresponding sizes from the storage.
Preferably, in the second step, the shaft outer diameter of the axle journal of the wheel set is measured by adopting a two-section three-point measurement mode, and the measurement is acquired and recorded by a handheld PDA data acquisition unit.
Preferably, the two-section three-point measurement mode is that two different sections are selected on the wheel pair shaft neck, three points are taken on the circumference of each section at an interval of 120 degrees for measurement, and then the average value of the three measured values is taken as the shaft diameter size of each section.
Preferably, in the third step, the dimensional tolerance of the interference matching between the axle of the wheel set journal and the bearing is within 0.9-1.2 per mill.
Preferably, in the third step, the corresponding bearing and the axle are pressed and mounted by a bearing press-mounting machine.
Compared with the prior art, the invention has the following technical effects:
the axle box bearing press mounting method adopts a selective matching mode to carry out the press mounting of the axle box bearing, can effectively ensure that the matching size is within the tolerance range, can greatly improve the press mounting effect, ensures the press mounting quality and prolongs the service life of the bearing after press mounting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a method for press-fitting a bearing of a wheel axle box of a railway vehicle according to the present invention;
FIG. 2 is a schematic flow chart of the method for press-fitting a bearing of a wheel axle box of a railway vehicle according to the present invention;
FIG. 3 is a schematic view of the construction of the robot arm of the present invention;
wherein: 1-measuring area, 2-bearing, 3-storage warehouse, 4-transmission belt, 5-mechanical arm, 6-wheel pair shaft neck and 7-bearing press-mounting machine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a method for press mounting a bearing of a wheel axle box of a railway vehicle, which aims to solve the problems in the prior art, improve the press mounting matching precision and reliability of the bearing and an axle, reduce the rejection rate and prolong the service life of the bearing.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 3: the embodiment provides a rail vehicle wheel axle box bearing press-fitting method, which specifically comprises the following steps:
firstly, measuring the inner diameter size of the bearing 2 in the bearing box in a measuring area 1, simultaneously sequentially collecting and recording the inner diameter size of each bearing 2, and storing the bearings 2 into a storage 3 to be pressed according to the recording sequence. The inner diameter of the bearing 2 is measured through a handheld PDA data acquisition unit, and a database of the inner diameter of the bearing 2 is recorded. After the measurement, the mechanical arm 5 which controls the automatic stacking through a computer takes the bearing 2 from the conveying belt 4 and transports the bearing 2 to the storage warehouse 3 of the bearing 2, when the bearing 2 is assembled and selected, the mechanical arm 5 grabs the bearing 2 with the corresponding size from the storage warehouse 3, rotates by 90 degrees and then places the bearing on the conveying belt 4. The robot arm 5 follows a first-in first-out operating principle when it picks up bearings 2 of a corresponding size from the storage 3. The robotic arm 5 is a robotic arm conventional in the art, as shown in fig. 3.
Measuring the outer diameter of the axle journal 6, and collecting and recording; the measurement method of the two cross sections and three points is adopted to measure the outside diameter of the shaft of the wheel set shaft neck 6, and the handheld PDA data acquisition unit is used for acquiring and recording. The three-point measurement mode of the two sections is to select two different sections on the axle journal 6 of the wheel pair, take three points on the circumference of each section at intervals of 120 degrees for measurement, and take the average value of the three measured values as the diameter size of each section.
And step three, selecting the size matched with the outer diameter size of the axle through a database of the inner diameter size of the bearing 2 according to the measured outer diameter size of the axle, selecting the bearing 2 corresponding to the outer diameter size of the axle from the storage library 3, and carrying out corresponding press mounting on the axle and the bearing 2. The axle of the embodiment is transported by a rail, the dimensional tolerance of the interference matching between the axle of the wheel pair shaft journal 6 and the bearing 2 is within 0.9-1.2 per mill, and the corresponding bearing 2 and the axle are pressed by the bearing press-fitting machine 7.
The press fitting of the bearing is carried out in the mode of selective matching, the matching size of the axle and the bearing can be effectively guaranteed, the press fitting effect can be greatly improved, the press fitting quality is guaranteed, and the service life of the bearing after press fitting is prolonged.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (8)

1. A rail vehicle wheel axle box bearing press-fitting method is characterized in that: the method specifically comprises the following steps:
measuring the inner diameter of a bearing in a bearing box, simultaneously sequentially collecting and recording the inner diameter of each bearing, and storing the bearings into a storage warehouse to be pressed according to the recording sequence;
measuring the outer diameter of the axle journal of the wheel set, and collecting and recording the measured outer diameter;
and thirdly, selecting the size matched with the outer diameter size of the axle through a database of the inner diameter size of the bearing according to the measured outer diameter size of the axle, selecting the bearing corresponding to the outer diameter size of the axle from a storage library, and carrying out corresponding press mounting on the axle and the bearing.
2. A method of press fitting a bearing for a wheel axle housing of a railway vehicle as claimed in claim 1, wherein: in the first step, the inner diameter of the bearing is measured through a handheld PDA data acquisition unit, and a database of the inner diameter of the bearing is recorded.
3. A method of press fitting a bearing for a wheel axle housing of a railway vehicle as claimed in claim 1, wherein: in the first step, after measurement, the mechanical arm pair for automatic stacking is controlled by a computer to take the bearing away from the conveying belt and transport the bearing to a storage bin of the bearing, and when the bearing is assembled and selected, the mechanical arm picks the bearing with the corresponding size from the storage bin, rotates for 90 degrees and then is placed on the conveying belt.
4. A method of press fitting a bearing for a wheel axle housing of a railway vehicle as claimed in claim 3, wherein: and when the mechanical arm grabs the bearings with corresponding sizes from the storage warehouse, the first-in first-out operation principle is followed.
5. A method of press fitting a bearing for a wheel axle housing of a railway vehicle as claimed in claim 1, wherein: in the second step, the external diameter size of the shaft neck of the wheel pair is measured by adopting a two-section three-point measuring mode, and the external diameter size is collected and recorded by a handheld PDA data collector.
6. A rail vehicle wheel axle box bearing press fitting method as claimed in claim 5, wherein: the three-point measurement mode of the two sections is that two different sections are selected on the axle journal of the wheel pair, three points are taken on the circumference of each section at intervals of 120 degrees for measurement, and then the average value of the three measured values is taken as the axle diameter size of each section.
7. A method of press fitting a bearing for a wheel axle housing of a railway vehicle as claimed in claim 1, wherein: in the third step, the dimensional tolerance of the axle of the wheel pair shaft neck and the bearing in interference matching is within 0.9-1.2 per mill.
8. A method of press fitting a bearing for a wheel axle housing of a railway vehicle as claimed in claim 7, wherein: and in the third step, the corresponding bearing and the axle are pressed and mounted through a bearing press-mounting machine.
CN202010294379.7A 2020-04-15 2020-04-15 Press mounting method for bearing of wheel axle box of railway vehicle Pending CN111390530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010294379.7A CN111390530A (en) 2020-04-15 2020-04-15 Press mounting method for bearing of wheel axle box of railway vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010294379.7A CN111390530A (en) 2020-04-15 2020-04-15 Press mounting method for bearing of wheel axle box of railway vehicle

Publications (1)

Publication Number Publication Date
CN111390530A true CN111390530A (en) 2020-07-10

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CN202010294379.7A Pending CN111390530A (en) 2020-04-15 2020-04-15 Press mounting method for bearing of wheel axle box of railway vehicle

Country Status (1)

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CN (1) CN111390530A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102951127A (en) * 2011-08-30 2013-03-06 北京新联铁科技股份有限公司 Integration method of wheel pair assembling and maintaining system for rail locomotive
CN202928553U (en) * 2012-08-28 2013-05-08 深圳深蓝精机有限公司 Receiving device of circular shaft outer diameter detecting machine and circular shaft outer diameter detecting machine
CN104457668A (en) * 2014-12-05 2015-03-25 柳州科路测量仪器有限责任公司 Portable axle diameter measuring instrument
WO2017179756A1 (en) * 2016-04-15 2017-10-19 한국철도공사 Tripod journal cross bearing disassembling and assembling apparatus
CN209648046U (en) * 2018-12-24 2019-11-19 齐齐哈尔四达铁路设备有限责任公司 Axle box maintenance apolegamy pipeline

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102951127A (en) * 2011-08-30 2013-03-06 北京新联铁科技股份有限公司 Integration method of wheel pair assembling and maintaining system for rail locomotive
CN102951127B (en) * 2011-08-30 2015-03-04 北京新联铁科技股份有限公司 Integration method of wheel pair assembling and maintaining system for rail locomotive
CN202928553U (en) * 2012-08-28 2013-05-08 深圳深蓝精机有限公司 Receiving device of circular shaft outer diameter detecting machine and circular shaft outer diameter detecting machine
CN104457668A (en) * 2014-12-05 2015-03-25 柳州科路测量仪器有限责任公司 Portable axle diameter measuring instrument
WO2017179756A1 (en) * 2016-04-15 2017-10-19 한국철도공사 Tripod journal cross bearing disassembling and assembling apparatus
CN209648046U (en) * 2018-12-24 2019-11-19 齐齐哈尔四达铁路设备有限责任公司 Axle box maintenance apolegamy pipeline

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
赵贺生: "轴承压装自动选配系统的研制", 《轴承压装自动选配系统的研制 *

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