CN203964836U

CN203964836U - Bearing axial play measurement mechanism

Info

Publication number: CN203964836U
Application number: CN201420284261.6U
Authority: CN
Inventors: 刘菊芬; 刘晶晶
Original assignee: Beijing Nankou Railway Transit Machinery Co Ltd
Current assignee: Beijing Zhongche Nankow Machinery Co Ltd
Priority date: 2014-05-29
Filing date: 2014-05-29
Publication date: 2014-11-26
Anticipated expiration: 2024-05-29

Abstract

The utility model provides a kind of bearing axial play measurement mechanism, comprise: diaxon bearing, each bearing seat includes a pedestal that is column, pedestal one end all has one for the optical axis section of bearing inner race is installed, and optical axis section bottom has one and is arranged on the annular projection of this optical axis section head bearing for axial location; On pedestal lateral wall, have a mounting hole for the instrument of installing and measuring, mounting hole is in the axial direction away from optical axis section; Standard ring, ringwise, and external diameter is greater than bearing seat optical axis section external diameter, is highly greater than the axial dimension between two bearings.By coordinating of above-mentioned bearing seat and standard ring and dial gauge, complete the measurement to bearing axial play, the height of spacer ring in finally determining according to this measured value, thereby bearing axial play is adjusted in ideal range, realize accurately measuring of bearing axial play, and easy to operate, without repeatedly dismantling bearing and gear, time saving and energy saving, for the accurate designing and making of middle spacer ring lays the foundation.

Description

Bearing axial play measurement mechanism

Technical field

The utility model relates to bearing clearance measuring technique, relates in particular to a kind of bearing axial play measurement mechanism.

Background technology

Bearing clearance is called again bearing clearance.So-called bearing clearance comprises the play under play (inoperative play) and the duty under off working state, wherein inoperative play refers to that bearing is not in the time being installed on axle or bearing housing, its inner ring or outer ring one are fixed, loose another radially or axial maximum amount of movement.According to moving direction, can be divided into end-play and end-play; And play under duty refers to, the play (title working gap) when running; And corresponding variation can occur bearing its play under different conditions, the performance such as the rolling fatigue life of its size to bearing, temperature rise, noise, vibration has a great impact.

Bearing clearance effect: having play in bearing is in order to ensure that bearing is able to flexible fluent running, but simultaneously also requirement can ensure that bearing operation is steady, the axis of bearing does not have remarkable sedimentation, and it is many as far as possible to bear the number of rolling body of load.Therefore, dynamic property (noise, vibration and friction) and the running accuracy of the play of bearing to bearing, serviceable life, (wearing and tearing are with tired) and load-bearing capacity all had a significant impact.

In the back-to-back installation of a pair of taper roll bearing or while using face-to-face, need to ensure that bearing pre-fastening reaches predetermined value.Because, now between two bearings, fix by modes such as bearing seat or the shaft shoulders, if bearing pre-fastening does not reach, can greatly reduce the load-bearing capacity of bearing, affect bearing life.For this reason, spacer ring in conventionally installing between two bearings in prior art, determines suitably axially working gap by middle spacer ring, and then improves bearing pre-fastening, to improve its load-bearing capacity and life-span.

But, whether suitable in order to ensure the axial working gap of being determined by middle spacer ring, also need to obtain the working gap value after bearing is installed by measurement, when it is not in ideal range time, the size of spacer ring in further adjusting according to this, until adjust to ideal range by bearing clearance; That is, conventionally need to measure repeatedly, and while using existing survey instrument to measure spacer ring rear bearing working gap in using, need repeated disassembled and assembled bearing and gear, operation is loaded down with trivial details, and labour intensity is very large.

Utility model content

The utility model provides a kind of bearing axial play measurement mechanism, for overcoming defect of the prior art, simple to operate, and it is convenient, time saving and energy saving to measure.

The utility model provides a kind of bearing axial play measurement mechanism, comprising:

Diaxon bearing, each described bearing seat includes a pedestal that is column, and described pedestal one end all has one for the optical axis section of bearing inner race is installed, and described optical axis section bottom has one and is arranged on the annular projection of this above bearing of optical axis section for axial location; On described pedestal lateral wall, have a mounting hole for the instrument of installing and measuring, described mounting hole is in the axial direction away from described optical axis section;

Standard ring, ringwise, and external diameter is greater than described bearing seat optical axis section external diameter, is highly greater than the axial dimension between two bearings.

Preferably:

Described mounting hole radially arranges along described pedestal, and described mounting hole is provided with the internal thread suitable with described survey instrument mounting rod external thread.

Further preferably:

The xsect of described annular projection is right-angle triangle or right-angled trapezium.

Particularly:

The external diameter of described annular projection is greater than described pedestal external diameter, and described pedestal external diameter is greater than described optical axis section external diameter.

The bearing axial play measurement mechanism that the utility model provides, when use, clutch shaft bearing inner ring can be arranged in the optical axis section of clutch shaft bearing seat, this bearing outer ring is arranged in the mounting groove of gear lower end, dial gauge screw rod end is screwed in mounting hole, table submeter contact gear lower surface, writes down survey measurements, again standard ring is packed in gear, now, standard ring bottom is installed with on clutch shaft bearing inner ring, the second bearing outer ring is arranged in the mounting groove of gear upper end, the second bearing seat is positioned on ground or worktable, and make optical axis section upward, by the above-mentioned gear being installed together first, the second bearing and clutch shaft bearing seat are inverted, and the second bearing inner race is arranged in the second bearing seat optical axis section upward, because standard ring height is higher than the setting gear between clutch shaft bearing and the second bearing, now, the upper and lower two ends of standard ring fit tightly with clutch shaft bearing and the second bearing inner race respectively, again write down survey measurements, the difference that the part that standard ring exceeds axial location size between two bearings deducts twice survey measurements is again the end-play of bearing, by coordinating of above-mentioned bearing seat and standard ring and dial gauge, complete the measurement to bearing axial play, the height of spacer ring in finally determining according to this measured value, thereby bearing axial play is adjusted in ideal range, realize accurately measuring of bearing axial play, and easy to operate, without repeatedly dismantling bearing and gear, time saving and energy saving, for middle spacer ring accurate designing and making lay the foundation.

Brief description of the drawings

The bearing axial play measurement mechanism bottom bracket that Fig. 1 provides for the utility model embodiment partly cut open schematic diagram;

Fig. 2 is along A-A to cut-open view in Fig. 1;

The bearing axial play measurement mechanism acceptance of the bid lead ring that Fig. 3 provides for the utility model embodiment is crossed the vertical profile schematic diagram of center line;

Fig. 4 is the survey instrument scheme of installation of each parts when survey measurements for the first time;

Fig. 5 is the survey instrument scheme of installation of parts when survey measurements for the second time.

Embodiment

As Figure 1-3, the utility model embodiment provides a kind of bearing axial play measurement mechanism, comprising:

Diaxon bearing, each bearing seat includes a pedestal 11 that is column, and pedestal 11 one end all have one for the optical axis section 12 of bearing inner race is installed, and optical axis section 12 bottoms have one and are arranged on the annular projection 13 of these optical axis section 12 head bearings for axial location; On pedestal 11 lateral walls, have a mounting hole 14 for the instrument of installing and measuring, mounting hole 14 is in the axial direction away from optical axis section 12;

Standard ring 2, ringwise, and external diameter is greater than bearing seat optical axis section 12 external diameters, and height A is greater than the axial dimension A ' between two bearings.

Standard ring 2 is as the basis of reference of measuring, determine according to the axial location size between actual two bearings, be generally the theoretical value+2～+ 5mm of axial position dimension between two bearings, that is: A=A '+(2～5mm), standard ring drawing as shown in Figure 4, Fig. 4 taking done gear case intermediate shaft be product as example, between two bearings, axially the theoretical value of position dimension is 93mm, standard ring 2 is highly that gauge is 95 ± 0.02mm;

Bearing seat, the standard ring 2 that is 95 ± 0.02mm with gauge matches.The effect of bearing seat: on the one hand: rise and support fixation; Himself gravity can compress the lower shaft gapless between card bearing and bearing seat of accepting insurance on the other hand.

The bearing axial play measurement mechanism that the utility model provides, when use, first clutch shaft bearing 10 inner rings can be arranged in the optical axis section 12 of clutch shaft bearing seat 1a, these clutch shaft bearing 10 outer rings are arranged in the mounting groove 31 of gear 30 lower ends, dial gauge 40 screw rod ends are screwed in the mounting hole 14 of clutch shaft bearing seat 1a, and dial gauge 40 contact gear 30 lower surfaces, write down survey measurements B1, also dial gauge can be returned to zero, with reference to Fig. 4;

Again standard ring 2 is packed in gear 30, now, standard ring 2 bottoms are installed with on clutch shaft bearing 10 inner rings, the second bearing 20 outer rings are arranged in the mounting groove 32 of gear 30 upper ends, the second bearing seat 1b is positioned on ground or worktable, and the optical axis section 12 that makes the second bearing seat 1b upward, by the above-mentioned clutch shaft bearing being installed together 10, the second bearing 20, gear 30 and clutch shaft bearing seat 1a are inverted, and the second bearing 20 inner rings are arranged in the second bearing seat 1b optical axis section 12 upward, because standard ring 2 height are higher than the axial dimension A ' between clutch shaft bearing 10 and the second bearing 20, now, standard ring fits tightly with clutch shaft bearing 10 and the second bearing 20 inner rings respectively at two ends Shang Xia 2, again write down survey measurements B2, with reference to Fig. 5, the difference that the part that standard ring 2 exceeds axial dimension between two bearings deducts twice survey measurements is again the end-play C ' of bearing, C '=(A-A ')-(B2-B1), if returned to zero when survey measurements for the first time, B1 is zero, C '=(A-A ')-B2, if B2 is 1.8mm, C '=(95-93)-1.8=0.2mm, by coordinating of above-mentioned bearing seat and standard ring and dial gauge, completes the measurement to bearing axial play,

The height D of spacer ring in finally determining according to this measured value, D=C '+A '=0.2+93=93.2mm, middle spacer ring is larger than theoretical value in the time of design, determines final size according to the two bearings gap width C ' of actual measurement, ensure certain amount of joining.Thereby bearing axial play is adjusted in ideal range, has been realized accurately measuring of bearing axial play, and easy to operate, for middle spacer ring accurate designing and making lay the foundation.

Two grades of gear case intermediate shafts are fastened bearing fixing structure, have increased a middle spacer ring between a pair of taper roll bearing, by this measurement mechanism, have solved two bearings play of the same type and have measured a difficult problem; The application of middle spacer ring has increased bearing pre-fastening and has improved bearing and life of product simultaneously, has improved the reliability of product.

As preferred version:

In order to reduce measuring error, mounting hole 14 radially arranges along pedestal 11, and mounting hole 14 is provided with the internal thread suitable with survey instrument mounting rod external thread.

Further preferred version:

For increasing the stability of annular projection axial carrying intensity and bearing seat entirety, the xsect of annular projection 13 is right-angle triangle or right-angled trapezium.Straight angular contact bearing inner ring end face.

For alleviating bearing seat deadweight, the external diameter of annular projection 13 is greater than pedestal 11 external diameters; With respect to directly processing optical axis section 12 in pedestal 11 one end, utilize the step surface axial location bearing between optical axis section 12 and pedestal 11, whole unprocessed pedestal 11 forms annular projection 13 with respect to the outside outstanding part of optical axis section 12, and own wt reduces greatly, and saves material.For alleviating bearing seat deadweight, pedestal 11 can adopt hollow-core construction, and cast forms conventionally, and the formation of annular projection 13 can directly form in the time of cast, and processing technology is simple equally.For increasing bearing seat intensity, pedestal 11 external diameters are greater than optical axis section 12 external diameters.By pedestal 11, annular projection 13 roots are supported.

Finally it should be noted that: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of the each embodiment technical scheme of the utility model.

Claims

1. a bearing axial play measurement mechanism, is characterized in that, comprising:

2. bearing axial play measurement mechanism according to claim 1, is characterized in that:

3. bearing axial play measurement mechanism according to claim 1 and 2, is characterized in that:

4. bearing axial play measurement mechanism according to claim 3, is characterized in that: