CN112833107B

CN112833107B - Automatic axle box bearing maintenance line and maintenance method

Info

Publication number: CN112833107B
Application number: CN202011643690.4A
Authority: CN
Inventors: 陈英; 翟好璟; 林强波; 杨大章
Original assignee: Chengdu CRRC Sifang Railway Vehicle Co Ltd
Current assignee: Chengdu CRRC Sifang Railway Vehicle Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-03-10
Anticipated expiration: 2040-12-31
Also published as: CN112833107A

Abstract

The invention discloses an automatic axle box bearing maintenance line and a maintenance method, which belong to the technical field of rail traffic maintenance equipment and solve the problems that the bearing maintenance is carried out manually in the prior art, the process method has low efficiency, high labor intensity and extremely low informatization degree, and the maintenance quality of a bearing cannot be effectively controlled.

Description

Automatic axle box bearing maintenance line and maintenance method

Technical Field

The invention belongs to the technical field of rail transit maintenance equipment, and particularly relates to an automatic axle box bearing maintenance line and a maintenance method.

Background

At present, urban rail transit develops rapidly, most cities enter the urban rail metro vehicle erection repair period, the axle box bearing is taken as a part which needs to be repaired, the conventional axle box bearing repair is carried out by entrusting an original manufacturer, a bearing manufacturer has a complete set of bearing repair production line, and the investment cost is high. The vehicle section mostly does not have the bearing maintenance capability or is provided with a simple tool to manually maintain the bearing, the process method has low efficiency, the labor intensity is high, the informatization degree is extremely low, and the bearing maintenance quality can not be effectively controlled.

Disclosure of Invention

The overhaul efficiency of the bearing of the axle box in the prior art is low. The invention provides an automatic axle box bearing overhauling line and an automatic axle box bearing overhauling method, and solves the problems of high labor intensity and low automation degree.

The technical scheme adopted by the invention is as follows:

an automatic axle box bearing overhaul line comprises a conveying belt, a conveying box and a computer control system, wherein a disassembling area, a primary cleaning area, a flaw detection area, a demagnetizing area, a size measuring area, an assembling area, a clearance measuring area, a secondary cleaning area and a grease injecting weighing area are sequentially arranged on the outer side of the conveying belt according to the advancing direction of the conveying belt, a disassembling workbench, a bearing outer ring polishing device, a rust removing device and a bearing disassembling tool are arranged in the disassembling area, and the disassembling workbench is arranged on the outer side of the conveying belt; a cleaning workbench and an ultrasonic cleaning machine are arranged in the primary cleaning area, and the ultrasonic cleaning machine is arranged above the conveying belt; a flaw detection workbench, a bearing rotating tool, an illuminating magnifier and a computer are arranged in the flaw detection area, and the flaw detection workbench is arranged on the outer side of the conveying belt; a demagnetizing machine, a magnetism measuring instrument, a conveying belt and a classified storage box are arranged in the demagnetizing area, two ends of the conveying belt are connected with the conveying belt, and the demagnetizing machine is arranged above the conveying belt; a measuring workbench I and an integrated measuring device are arranged in the size measuring area, and the measuring workbench I is arranged on the outer side of the conveying belt; a measuring workbench II and an integrated radial and axial play measuring instrument are arranged in the assembling and play measuring area, and the measuring workbench II is arranged on the outer side of the conveying belt; a bearing cleaning machine is arranged in the secondary cleaning area and is arranged above the conveying belt; annotate fat and weigh and be provided with weighing workbench, weighing instrument, notes fat machine in the district, weighing workbench sets up in the end of transmission band.

By adopting the technical scheme, the axle box bearing maintenance operation mode can be standardized and streamlined, the scientific maintenance method and mechanical equipment are combined, the automation degree of the maintenance line is improved, the axle box bearing to be maintained is orderly transmitted among all the stations in a production line mode among all the areas, the stations are maintained according to the process according to the beats, the labor efficiency can be greatly improved, and the labor cost can be greatly saved.

Preferably, the computer control system comprises a server, a PLC central processing unit, an identity identification terminal and a transmission belt control switch which are respectively arranged in a disassembling area, a flaw detection area, a size measurement area, an assembling area, a clearance measurement area and a grease injection weighing area, a data input terminal which is respectively arranged in the flaw detection area, the size measurement area and the clearance measurement area, and a master control switch which is arranged in the disassembling area, wherein the data input terminal is a computer. By adopting the optimized scheme, the automation degree of the maintenance line is improved by combining an intelligent control system, the working process of operators is standardized, and the maintenance efficiency is improved.

Preferably, be provided with backstop mechanism, pushing mechanism and position sensor on the transmission belt, backstop mechanism sets up respectively in the left side of disassembling the workstation, detecting a flaw workstation, measuring table I, measuring table II and assembling table, position sensor sets up respectively in the right side of disassembling the workstation, detecting a flaw workstation, measuring table I, measuring table II and assembling table, pushing mechanism sets up respectively in the offside of disassembling the workstation, detecting a flaw workstation, measuring table I, measuring table II and assembling table, stopping mechanism includes telescopic cylinder and pin, pushing mechanism includes propelling cylinder and push rod, position sensor is photoelectric position sensor. By adopting the preferred scheme, the storage box can be automatically intercepted by the stop mechanism when arriving at the appointed station and pushed to the corresponding workbench by the pushing mechanism, so that the storage box is effectively intercepted at the appointed station, and the labor intensity of operators is reduced.

Preferably, bearing inner race grinding device is bearing inner race polisher, and it includes supporting legs, mount pad, fixed axle, axis of rotation and rotation motor, the one end and the mount pad fixed connection of fixed axle, the one end of axis of rotation passes through the coupling joint with the rotation motor in the mount pad, and the fixed axle just keeps alternate distance with the axis of rotation side by side, rotates the motor setting in the mount pad, and the supporting legs setting is in the mount pad lower part, be provided with the rust cleaning device in the axis of rotation, the rust cleaning device is the scouring pad. Adopt this preferred scheme, compare in the manual rust cleaning of polishing, use bearing inner race grinding device to improve the efficiency of polishing.

Preferably, the journal box bearing service line is U-shaped. Adopt this preferred scheme, compare in common linear type maintenance line, U type maintenance line occupation of land space is compacter.

Preferably, the integrated radial and axial play measuring instrument in the size measuring area specifically comprises a measuring table top, an axial play measuring meter and a radial play measuring meter are arranged above the measuring table top, the axial play measuring meter is vertically arranged, the radial play measuring meter is horizontally arranged, a tensioning lock sleeve is arranged on the measuring table top, a fixing part used for fixing a ferrule of the bearing to be detected on the measuring table top is connected into the tensioning lock sleeve, and the lower end of the tensioning lock sleeve is connected with a pull-down device. By adopting the preferred scheme, compared with the fixation and force application operation of the inner ring and the outer ring of the bearing by common manual work, the integrated radial and axial clearance measuring instrument is adopted, the radial and axial clearance of the bearing can be rapidly and simultaneously detected in a labor-saving manner through simple operation, and the process efficiency is improved.

An automatic maintenance method of an axle box bearing maintenance line comprises the following steps:

(1) Disassembling a bearing:

the method comprises the following steps of (1) disassembling a sealing ring of a bearing by using a special bearing disassembling tool, taking out an inner ring, an outer ring and a retainer, sleeving the outer ring on a fixed shaft of a bearing outer ring polisher, sleeving a rust removal device on a rotating shaft, starting a rotating motor to remove rust and polish the surface of the outer ring, and after rust removal, loading parts into a transport box and conveying the parts to a cleaning area through a conveying belt;

(2) Cleaning a bearing:

manually cleaning the inner ring and the outer ring of the bearing by using a kerosene cleaning agent on a cleaning station, putting the cleaned inner ring and the outer ring into a bearing transport box, conveying the bearing transport box into an ultrasonic cleaning machine by using a conveying belt, and conveying the bearing transport box to a flaw detection area after cleaning, rinsing, blow-drying and other processes;

(3) Flaw detection of the bearing:

placing bearing parts on a bearing rotating tool, matching with an illuminating magnifier to perform bearing appearance inspection, inputting and storing a final inspection result in a server through a data input terminal, and independently placing an outer ring, an inner ring, a roller retainer assembly, an edge blocking ring and a middle spacing ring in a classification storage box and conveying the outer ring, the inner ring, the roller retainer assembly, the edge blocking ring and the middle spacing ring to a demagnetizing area through a conveying belt;

(4) Demagnetizing the bearing:

the classified storage box enters a U-shaped conveying belt of a demagnetizing area from a conveying belt, demagnetizing operation is carried out sequentially through a demagnetizing machine, residual magnetism at outer chamfers of end faces of an inner ring and an outer ring is detected by using a magnetism measuring instrument after demagnetization is finished, wherein each side end face is measured with a uniform distribution point, the residual magnetism is required to be not more than 0.5mT, and the classified storage box is conveyed to a size measuring area through the conveying belt after demagnetization is finished;

(5) And (3) measuring the size of the bearing:

on a measuring workbench I, an inner ring and an outer ring are arranged on an integrated measuring device and rotate at a constant speed, the measurement of the outer diameter, the inner diameter and the height of the inner ring and the outer ring of the bearing is completed, the measured data are automatically transmitted to a server, and after the size measurement is completed, the classified storage box is sent to an assembly area through a transmission belt;

(6) Assembling a bearing and measuring a clearance:

on a measuring workbench II, assembling a retainer assembly, an outer ring, an inner spacer ring, a retainer assembly, an inner ring and a flange ring in sequence manually, and after the bearing is assembled, measuring the clearance of the bearing by using integral radial axial clearance measurement;

(7) Cleaning a bearing in a complete set:

putting the assembled bearing into a bearing cleaning machine, starting a bearing cleaning device, performing four procedures of primary cleaning, secondary cleaning, rotary drying and high-pressure air drying to complete the complete cleaning of the outer tube of the bearing, and pushing the cleaned bearing in a transport box to a grease injection weighing area through a transmission belt;

(8) Grease injection for bearings:

the assembled bearing needs to be weighed and then filled with grease, when the bearing is weighed before grease filling, a weight is firstly used for calibrating a weighing platform, then the bearing is weighed before grease filling, the bearing is placed on a grease filling platform, the starting equipment starts to perform bidirectional grease filling, secondary weighing is performed after grease filling, the grease filling amount is 180-200g, and the reference total weight (without a sealing ring) of the bearing is not more than 23kg.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. by adopting the technical scheme of the invention, the axle box bearing maintenance operation mode can be standardized and streamlined, the automation degree of the maintenance line is improved by combining a scientific maintenance method and mechanical equipment, the axle box bearing to be maintained is orderly transmitted among all stations in a production line form among all areas, the stations are maintained according to the process according to the beat, the labor efficiency can be greatly improved, and the labor cost can be greatly saved.

2. The intelligent computer control system is combined, so that the automation degree of the maintenance line is improved, the working process of operators is standardized, and the maintenance efficiency is improved.

3. The conveying belt is provided with the stopping mechanism, the pushing mechanism and the position sensor, so that the storage box can be automatically intercepted by the stopping mechanism when arriving at the appointed station and pushed to the corresponding workbench by the pushing mechanism, the storage box is guaranteed to be effectively intercepted at the appointed station, and the labor intensity of operators is reduced.

4. By adopting the bearing outer ring polishing device, compared with manual polishing and rust removal, the polishing efficiency is improved.

5. The axle box bearing overhauls line shape and is the U type, compares in common linear type overhauls the line, and U type overhauls that the line takes up an area of space compacter.

6. Compare in the fixed of common manual work to the inner circle of bearing and outer lane and application of force operation, adopt the radial axial play measuring apparatu of integral type, can be through simple operation, accomplish the detection of the radial of bearing and axial play simultaneously laborsavingly fast, improve process efficiency.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIGS. 1 and 2 are schematic structural views of an automated axle box bearing service line of the present invention;

FIG. 3 is a schematic view of a bearing cup driver;

FIG. 4 is a schematic view of an inspection flow of an automated axle box bearing inspection line;

reference numerals

A disassembly area-1, a primary cleaning area-2, a flaw detection area-3, a demagnetizing area-4, a size measuring area-5, a play measuring area-6, a secondary cleaning area-7, a grease injection weighing area-8, a conveying belt-9, a disassembly workbench-10, a cleaning workbench-11, an ultrasonic cleaning machine-12, a flaw detection workbench-13, a conveying belt-14, a demagnetizing machine-15, a conveying box-16, a measuring workbench I-17, a measuring workbench II-18, a bearing cleaning machine-19, a weighing workbench-20, a pushing mechanism-21, a position sensor-22, a stop mechanism-23, a supporting leg-24, a fixed shaft-25, a rotating shaft-26 and a mounting seat-27.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of embodiments of the present application, generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail with reference to fig. 1 to 4.

Example 1:

an automatic axle box bearing overhaul line comprises a transmission belt 9, a transportation box 16 and a computer control system, wherein enclosing blocks are arranged on two sides of the transmission belt 9, the height of each enclosing block is 10cm, a disassembling area 1, a primary cleaning area 2, a flaw detection area 3, a demagnetizing area 4, a size measuring area 5, an assembling and play measuring area 6, a secondary cleaning area 7 and a grease injecting and weighing area 8 are sequentially arranged on the outer side of the transmission belt 9 according to the advancing direction of the transmission belt 9, a disassembling workbench 10, a bearing outer ring polishing device, a rust removing device and a bearing disassembling tool are arranged in the disassembling area 1, the disassembling workbench 10 is arranged on the outer side of the transmission belt 9, the height of the disassembling workbench 10 is the same as that of the transmission belt 9, and the bearing outer ring polishing device box bearing disassembling tool is placed on the disassembling workbench 10; a cleaning workbench 11 and an ultrasonic cleaning machine 12 are arranged in the primary cleaning area 2, the ultrasonic cleaning machine 12 is arranged above the conveying belt 9, and the cleaning workbench is positioned outside the conveying belt 9 and has the same height as the conveying belt 9; the flaw detection device is characterized in that a flaw detection workbench 13, a bearing rotating tool, an illuminating magnifier and a computer are arranged in the flaw detection area 3, the flaw detection workbench 13 is arranged on the outer side of the conveying belt 9, the illuminating magnifier has the functions of magnification and illumination, the bearing rotating tool comprises a base and a rotating shaft 26 connected with the base and a fixed shaft 25 by utilizing the detection of the appearance of the bearing, and the rotating shaft 26 is fixedly connected with the base so as to facilitate the observation of all angles of the outer ring of the bearing; a demagnetizing machine 15, a magnetism measuring instrument, a conveying belt 14 and a classified storage box are arranged in the demagnetizing area 4, two ends of the conveying belt 14 are connected with the conveying belt 9, and the demagnetizing machine 15 is arranged above the conveying belt 14; a measuring workbench I17 and an integrated measuring device are arranged in the size measuring area 5, the measuring workbench I17 is arranged on the outer side of the conveying belt 9 and is at the same height as the conveying belt 9, the integrated measuring device is an integrated bearing measuring instrument and comprises a computer and a measuring table, a bearing is arranged on the measuring table and rotates at a constant speed, and obtained measuring data are automatically transmitted and stored to a server through the computer; a measuring workbench II 18, a computer and an integrated radial and axial play measuring instrument are arranged in the assembling and play measuring area 6, the measuring workbench II 18 is arranged on the outer side of the transmission belt 9 and is at the same height as the transmission belt 9, a bearing is arranged on the integrated radial and axial play measuring instrument to automatically complete fixing and measuring, and the obtained measuring data is automatically transmitted and stored to a server through the computer; a bearing cleaning machine 19 is arranged in the secondary cleaning area 7, the bearing cleaning machine 19 is arranged above the conveying belt 9, and four stations of primary cleaning, secondary cleaning, rotary drying and high-pressure air drying are arranged in the bearing cleaning machine 19; the grease injection weighing area 8 is internally provided with a weighing workbench 20, a weighing instrument and a grease injection machine, the weighing workbench 20 is arranged at the tail end of the transmission belt 9 and is at the same height as the transmission belt 9, and the weighing instrument and the grease injection machine are respectively arranged on the weighing workbench 20.

In the embodiment, the computer control system comprises a server, a PLC central processing unit, an identity recognition terminal and a transmission belt 9 control switch which are respectively arranged in a disassembling area 1, a flaw detection area 3, a size measurement area 5, an assembling area, a clearance measurement area and a grease injection weighing area 8, a data input terminal and a master control switch which are respectively arranged in the flaw detection area 3, the size measurement area 5 and the clearance measurement area 1, wherein the identity recognition terminal adopts a face recognition mode or an ID card recognition mode, the transmission belt 9 control switch is a switch button and is used for actively controlling the start and stop of the transmission belt 9, the server is used for storing overhauling measurement data, the PLC central processing unit is used for analyzing and issuing a control command, the data input terminal is a computer, and the master control switch is an overhauling line power supply master switch.

In this embodiment, be provided with backstop mechanism 23, thrustor 21 and position sensor 22 on the transmission band 9, backstop mechanism 23 sets up respectively in the left side of disassembling workstation 10, flaw detection workstation 13, measurement workstation I17, measurement workstation II 18 and assembly workstation, position sensor 22 sets up respectively in the right side of disassembling workstation 10, flaw detection workstation 13, measurement workstation I17, measurement workstation II 18 and assembly workstation, thrustor 21 sets up respectively in the right side of disassembling workstation 10, flaw detection workstation 13, measurement workstation I17, measurement workstation II 18 and assembly workstation, backstop mechanism 23 includes telescopic cylinder and pin, thrustor 21 is including propelling movement cylinder and push rod, position sensor 22 is photoelectric position sensor 22, can realize storing the box when reacing appointed station, is automatic by backstop mechanism 23 interception, and is pushed by thrustor 21 to the workstation that corresponds, guarantees to store the box and is effectively intercepted at appointed station, alleviates operation personnel intensity of labour.

In this embodiment, bearing inner race grinding device is bearing inner race polisher, and it includes supporting legs 24, mount pad 27, fixed axle 25, axis of rotation 26 and rotation motor, the one end and the mount pad 27 fixed connection of fixed axle 25, the one end of axis of rotation 26 passes through the coupling joint with the rotation motor in the mount pad 27, and fixed axle 25 is parallel with axis of rotation 26 and keeps alternate distance, rotates the motor setting in mount pad 27, and supporting legs 24 sets up in mount pad 27 lower part, be provided with rust cleaning device on the axis of rotation 26, rust cleaning device be the scouring pad also can be for other objects that have polishing function, compare in the rust cleaning of manual polishing, use bearing inner race grinding device to improve the efficiency of polishing.

In this embodiment, axle box bearing service line shape is the U type, compares in common linear type service line, and U type service line occupation of land space is compacter.

In this embodiment, the integrated radial and axial clearance measuring instrument in the size measuring area 5 specifically includes a measuring table top, an axial clearance measuring meter and a radial clearance measuring meter are arranged above the measuring table top, the axial clearance measuring meter is vertically arranged, the radial clearance measuring meter is horizontally arranged, a tensioning lock sleeve is arranged on the measuring table top, a fixing member for fixing a ferrule of a bearing to be tested on the measuring table top is connected in the tensioning lock sleeve, the fixing member includes a tensioning rod, a tensioning pressure plate is arranged at the upper end of the tensioning rod, the shape of the lower end of the tensioning pressure plate is matched with the shape of a ferrule of the bearing to be tested, the lower end of the tensioning rod is connected with the tensioning lock sleeve, the lower end of the tensioning lock sleeve is connected with a pull-down device, the pull-down device includes a pressing cylinder, the pressing cylinder includes a pull-down piston rod, the upper end of the pull-down piston rod is fixedly connected with the tensioning lock sleeve, and compared with the common manual fixing and force application operations on the inner ring and the outer ring of the bearing, the integrated radial and axial clearance measuring instrument is adopted, so that the radial and axial clearance of the bearing can be rapidly and simultaneously detected in a labor-saving manner through simple operations, and the process efficiency is improved.

The maintenance process of the axle box bearing comprises the following steps: bearing disassembly → bearing cleaning → bearing flaw detection → bearing demagnetization → size measurement → bearing assembly → play measurement → whole set cleaning → bearing grease injection.

(1) Disassembling a bearing:

the sealing ring of the bearing is disassembled by using a special bearing disassembling tool, the inner ring, the outer ring and the retainer are taken out, the outer ring is sleeved on a fixed shaft 25 of a bearing outer ring polisher, a rust removing device is sleeved on a rotating shaft 26, a rotating motor is started to remove rust and polish the surface of the outer ring, and after rust removal, parts are arranged in a conveying box 16 and are conveyed to a cleaning area through a conveying belt 9;

(2) Cleaning a bearing:

manually cleaning the inner ring and the outer ring of the bearing by using a kerosene cleaning agent on a cleaning station, putting the cleaned inner ring and the outer ring into a bearing transport box 16, conveying the bearing into an ultrasonic cleaning machine 12 by using a conveying belt 9, and after the procedures of cleaning, rinsing, blow-drying and the like, conveying the transport box 16 to a flaw detection area 3;

(3) Flaw detection of the bearing:

bearing parts are placed on a bearing rotating tool, bearing appearance inspection is carried out by matching with an illumination magnifier, the final inspection result is input and stored in a server through a data input terminal, and an outer ring, an inner ring, a roller retainer assembly, a side blocking ring and a middle spacing ring are independently placed in a classification storage box and are conveyed to a demagnetizing area 4 through a conveying belt 9;

(4) Demagnetizing the bearing:

the classified storage box enters a U-shaped conveying belt 14 of the demagnetizing area 4 from a conveying belt 9, demagnetizing operation is sequentially carried out through a demagnetizing machine 15, residual magnetism at outer chamfers of 2 end faces of an inner ring and an outer ring is detected by using a magnetism measuring instrument after demagnetizing is finished, 6 uniform distribution points are measured on each side end face, the residual magnetism is required to be not more than 0.5mT, and the classified storage box is conveyed to a size measuring area 5 through the conveying belt 9 after demagnetizing is finished;

(5) And (3) measuring the size of the bearing:

on a measuring workbench I17, an inner ring and an outer ring are arranged on an integrated measuring device and rotate at a constant speed, the measurement of the outer diameter, the inner diameter and the height of the inner ring and the outer ring of the bearing is completed, the measured data are automatically transmitted to a server, and after the size measurement is completed, the classified storage box is conveyed to an assembly area through a conveying belt 9;

(6) Assembling a bearing and measuring a clearance:

on a measuring workbench II 18, assembling a retainer assembly, an outer ring, an inner spacer ring, a retainer assembly, an inner ring and a flange ring in sequence manually, using integral radial axial clearance measurement to measure the clearance of the bearing after the bearing is assembled, firstly placing a complete set of bearing on a clearance measuring instrument, starting a compression switch, clicking a first measurement, then starting a jacking switch, clicking a second measurement, completing the axial clearance measurement, wherein the axial clearance is 0.55-1.10mm, finishing the measurement, uploading a data system, then starting the measurement, firstly pulling the lower part of the bearing by two hands, rotating the outer ring left and right, then pushing the lower part of the bearing by two hands, completing the radial clearance measurement, the radial clearance is 0.10-0.15mm, placing the bearing in a qualified transportation box 16 for clearance measurement, and pushing the bearing to a complete set of cleaning area through a transmission belt 9;

(7) Cleaning a bearing in a complete set:

putting the assembled bearing into a bearing cleaning machine 19, starting a bearing cleaning device, performing four procedures of primary cleaning, secondary cleaning, rotary drying and high-pressure air drying to finish the complete cleaning of the appearance of the bearing, putting the cleaned bearing in a transport box 16, and pushing the cleaned bearing to a grease injection weighing area 8 through a transmission belt 9;

(8) Grease injection for bearings:

the assembled bearing needs to be weighed and then filled with grease, when the bearing is weighed before grease filling, a weight is firstly used for calibrating a weighing platform, then the bearing is weighed before grease filling, the bearing is placed on a grease filling platform, the starting equipment starts to perform bidirectional grease filling, secondary weighing is performed after grease filling, the grease filling amount is 180-200g, and the reference total weight of the bearing does not contain a sealing ring and is not more than 23kg.

The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.

Claims

1. An automatic axle box bearing overhaul line comprises a transmission belt (9), a transport box (16) and a computer control system, and is characterized in that a disassembling area (1), a primary cleaning area (2), a flaw detection area (3), a demagnetizing area (4), a size measuring area (5), an assembling and play measuring area (6), a secondary cleaning area (7) and a grease injecting and weighing area (8) are sequentially arranged on the outer side of the transmission belt (9) according to the advancing direction of the transmission belt (9), a disassembling workbench (10), a bearing outer ring polishing device, a rust removing device and a bearing disassembling tool are arranged in the disassembling area (1), and the disassembling workbench (10) is arranged on the outer side of the transmission belt (9); a cleaning workbench (11) and an ultrasonic cleaning machine (12) are arranged in the primary cleaning area (2), and the ultrasonic cleaning machine (12) is arranged above the conveying belt (9); a flaw detection workbench (13), a bearing rotating tool, an illuminating magnifier and a computer are arranged in the flaw detection area (3), and the flaw detection workbench (13) is arranged on the outer side of the conveying belt (9); a demagnetizing machine (15), a magnetism measuring instrument, a conveying belt (14) and a classified storage box are arranged in the demagnetizing area (4), two ends of the conveying belt (14) are connected with the conveying belt (9), and the demagnetizing machine (15) is arranged above the conveying belt (14); a measuring workbench I (17) and an integrated measuring instrument are arranged in the size measuring area (5), and the measuring workbench I (17) is arranged on the outer side of the conveying belt (9); a measuring workbench II (18) and an integrated radial and axial play measuring instrument are arranged in the assembling and play measuring area (6), and the measuring workbench II (18) is arranged on the outer side of the conveying belt (9); a bearing cleaning machine (19) is arranged in the secondary cleaning area (7), and the bearing cleaning machine (19) is arranged above the conveying belt (9); a weighing workbench (20), a weighing instrument and a grease injecting machine are arranged in the grease injecting weighing area (8), and the weighing workbench (20) is arranged at the tail end of the conveying belt (9);

the automatic flaw detection device is characterized in that a stopping mechanism (23), a pushing mechanism (21) and a position sensor (22) are arranged on the conveying belt (9), the stopping mechanism (23) is arranged on the left side of the disassembling workbench (10), the flaw detection workbench (13), the measuring workbench I (17), the measuring workbench II (18) and the assembling workbench respectively, the position sensor (22) is arranged on the right side of the disassembling workbench (10), the flaw detection workbench (13), the measuring workbench I (17), the measuring workbench II (18) and the assembling workbench respectively, and the pushing mechanism (21) is arranged on the opposite side of the disassembling workbench (10), the flaw detection workbench (13), the measuring workbench I (17), the measuring workbench II (18) and the assembling workbench respectively;

the stop mechanism (23) comprises a telescopic cylinder and a stop rod, the pushing mechanism (21) comprises a pushing cylinder and a push rod, and the position sensor (22) is a photoelectric position sensor (22);

bearing inner race grinding device is bearing inner race polisher, and it includes supporting legs (24), mount pad (27), fixed axle (25), axis of rotation (26) and rotates the motor, the one end and mount pad (27) fixed connection of fixed axle (25), the rotation motor in the one end of axis of rotation (26) and mount pad (27) passes through the coupling joint, fixed axle (25) and axis of rotation (26) just keep alternate distance side by side, rotate the motor setting in mount pad (27), supporting legs (24) set up in mount pad (27) lower part, be provided with the rust cleaning device on axis of rotation (26), the rust cleaning device is the scouring pad.

2. The automatic axle box bearing overhaul line of claim 1, wherein the computer control system comprises a server, a PLC central processing unit, an identification terminal and a transmission belt (9) control switch respectively arranged in a disassembling area (1), a flaw detection area (3), a dimension measurement area (5), an assembling area, a clearance measurement area and a greasing and weighing area (8), a data input terminal respectively arranged in the flaw detection area (3), the dimension measurement area (5) and the clearance measurement area, and a master control switch arranged in the disassembling area (1), and the data input terminal is a computer.

3. An automated axlebox bearing service line according to claim 1, wherein the axlebox bearing service line is U-shaped.

4. An automated axle box bearing service line according to claim 1, wherein the integrated radial and axial play measuring instrument in the dimension measuring area (5) specifically comprises a measuring table top, an axial play measuring instrument and a radial play measuring instrument are arranged above the measuring table top, the axial play measuring instrument is vertically arranged, the radial play measuring instrument is horizontally arranged, a tensioning lock sleeve is arranged on the measuring table top, a fixing part for fixing a ferrule of a bearing to be detected on the measuring table top is connected in the tensioning lock sleeve, and a pull-down device is connected to the lower end of the tensioning lock sleeve.

5. An automated axlebox bearing service line service method according to claim 1, comprising the steps of:

1) Disassembling a bearing:

the used bearing disassembling tool is used for disassembling a sealing ring of a bearing, taking out an inner ring, an outer ring and a retainer, sleeving the outer ring on a fixed shaft (25) of a bearing outer ring polisher, sleeving a derusting device on a rotating shaft (26), starting a rotating motor to derust and polish the surface of the outer ring, and after derusting, loading parts into a transport box (16) and conveying the parts to a cleaning area through a conveying belt (9);

2) Cleaning a bearing:

the method comprises the following steps of firstly, manually cleaning the inner ring and the outer ring of the bearing by using a kerosene cleaning agent on a cleaning station, putting the cleaned inner ring and the outer ring into a bearing transport box (16), conveying the bearing into an ultrasonic cleaning machine (12) by using a conveying belt (9), and conveying the bearing transport box (16) to a flaw detection area (3) after cleaning, rinsing and blow-drying processes are carried out;

3) Flaw detection of the bearing:

bearing parts are placed on a bearing rotating tool, bearing appearance inspection is carried out by matching with an illumination magnifier, the final inspection result is input and stored in a server through a data input terminal, and an outer ring, an inner ring, a roller retainer assembly, a side blocking ring and a middle spacing ring are independently placed in a classification storage box and are conveyed to a demagnetizing area (4) through a conveying belt (9);

4) Demagnetizing the bearing:

the classified storage box enters a U-shaped conveying belt (14) of a demagnetizing area (4) from a conveying belt (9), demagnetizing operation is sequentially carried out through a demagnetizing machine (15), residual magnetism at outer chamfers of 2 end faces of an inner ring and an outer ring is detected by using a magnetism measuring instrument after demagnetizing is finished, wherein 6 uniform distribution points are measured on the end face of each side, the residual magnetism is required to be not more than 0.5mT, and the classified storage box is conveyed to a size measuring area (5) through the conveying belt (9) after demagnetizing is finished;

5) And (3) measuring the size of the bearing:

on a measuring workbench I (17), an inner ring and an outer ring are arranged on an integrated measuring device and rotate at a constant speed, the measurement of the outer diameter, the inner diameter and the height of the inner ring and the outer ring of the bearing is completed, the measured data are automatically transmitted to a server, and after the size measurement is completed, the classified storage box is conveyed to an assembly and clearance measuring area through a conveying belt (9);

6) Assembling a bearing and measuring a clearance:

on a measuring workbench II (18), manually assembling a retainer assembly, an outer ring, an inner spacer ring, a retainer assembly, an inner ring and a flange ring in sequence, after the bearing is assembled, using integral radial axial clearance measurement to measure the clearance of the bearing, firstly placing a complete set of bearings on a clearance measuring instrument, starting a compression switch, clicking a first measurement, then starting a jacking switch, clicking a second measurement, and completing the axial clearance measurement, wherein the range of the axial clearance is 0.55-1.10mm, after the measurement is completed, a data uploading system is started, then starting the measurement, firstly pulling the lower part of the bearing by two hands, rotating the outer ring left and right, then pushing the lower part of the bearing by two hands, completing the radial clearance measurement, and pushing the bearing to a complete set of cleaning area by a conveying belt (9) when the radial clearance is qualified;

7) Cleaning a bearing in a complete set:

putting the assembled bearing into a bearing cleaning machine (19), starting a bearing cleaning device, performing four procedures of primary cleaning, secondary cleaning, spin-drying and high-pressure air blowing to complete the complete cleaning of the outer tube of the bearing, putting the cleaned bearing in a transport box (16), and pushing the cleaned bearing to a grease injection weighing area (8) through a transmission belt (9);

8) Grease injection for bearings:

the assembled bearing needs to be weighed and then filled with grease, when the bearing is weighed before grease filling, a weighing platform is calibrated by using a weight, then the bearing is weighed before grease filling, the bearing is placed on the grease filling platform, the starting equipment starts to perform bidirectional grease filling, secondary weighing is performed after grease filling, the grease filling amount is 180-200g, and under the condition that the bearing does not contain a sealing ring, the reference total weight of the bearing is not more than 23kg.