CN205748914U - Bearing rotary torsional moment test device - Google Patents

Abstract

A kind of bearing rotary torsional moment test device, connect thrust bearing, spring spacer, micro-load bar on axially loaded part central shaft to coordinate with being connected the pressure transducer having axially loaded set, measuring piece is coordinated with test shaft clearance from identical two upper and lower detection brearing bores, test axle lower end is connected with yielding coupling, upper detection bearing outside diameter coordinates with being arranged on axially loaded set on pressure transducer, and lower detection bearing outside diameter coordinates with being arranged on scroll chuck on test-bed.Torque overload device is installed additional on step motor shaft, detection overload is avoided to damage torque sensor, thrust bearing, spring spacer, yielding coupling carry aligning function, ensure the concentricity of this device, scroll chuck is unclamped after loading, bearing is without guiding the most not by tilting load and other pressure influence, test bit is more accurate, decrease different size bearing test and need to change the trouble of detecting tool, thoroughly solve detection bearing because of load deflection and cause detection numerical value is inaccurate, poor repeatability, practicality be not good enough problem.

Description

Bearing rotary torsional moment test device

Technical field

This utility model relates to the assay device of a kind of bearing, and a kind of larger axis that can bear revolves to the bearing of load Torque assay device.

Background technology

Bearing is the important foundation parts of all kinds of mechanized equipment, and the rotation torque of bearing is the weight of bearing dynamic property Wanting one of technical specification, the precision of bearing parts, performance, life and reliability are to the precision of main frame, performance, life and reliability Playing effect important, conclusive, moment of torsion is the basic load form of various work mechanism power transmission shaft, with the work of dynamic power machine Ability, the factor such as energy resource consumption, efficiency, running life and security performance is closely related, for reducing energy consumption, it is ensured that during bearing rotary Fluent phenomenon, the detection of bearing torque is the most extremely important to manufacturer and user.

Chinese patent 200910096442.X " bearing is the measurement apparatus of moment of friction under axially different load, rotating speed ", Though also providing the measurement apparatus of a kind of bearing friction power, after repetitive measurement uses, find that it there is also some defects, such as group Filling, debug, test, operate the most troublesome, spend time length, efficiency low, test bearing specification is single, also needs to design different determining Position frock but it cannot be guaranteed that the concentricity measured, shake instability can be produced during measurement, make the waveform measured occur not advise Sudden change then, thus measurement data is inaccurate, poor repeatability, therefore practicality is not good enough.

Summary of the invention

Technical problem to be solved in the utility model is: provides a kind of bearing rotary torsional moment test device, tests with this Device can accurately detect at larger axis under the effect of loading force, the rotation torque of bearing, and this assay device assembles, adjusts Examination, test, simple, convenient, efficiency is high, and test scope is wide, and surveyed torque value is stable, reproducible, practical.

The technical scheme in the invention for solving the above technical problem is: bearing rotary torsional moment test device, including peace Being contained in the actuator on base plate, test-bed, loading stand, axially loaded part, measuring piece, described actuator is by being fixed on base plate On motor, be connected with yielding coupling by torque sensor, described torque sensor is shown with moment of torsion by lead-in wire Device connects, and described axially loaded part is had the central shaft of disk spring and load bar to connect into entirety, under described central shaft by connection End connects pressure transducer, and described pressure transducer is connected with pressure display unit by lead-in wire, and central plate is moved by angle iron Being connected to load on stand, described measuring piece is coordinated with test shaft clearance from the endoporus of two identical upper and lower detection bearings, described The lower end of test axle is connected with described yielding coupling, the external diameter of described upper detection bearing and the axle being arranged on pressure transducer Coordinating to loading set, the external diameter of described lower detection bearing coordinates with the scroll chuck being arranged on described test-bed, described axle Connect on the central shaft of loaded member and have thrust bearing and spring spacer, micro-load bar and join with pressure transducer, axially loaded set Close.

Compared with prior art, the utility model has the advantage of, first this assay device uses vertical structure, and it is concentric Spending, the torque value recorded is more accurate, more convenient, more directly perceived when changing different detection bearing, regulating axially loaded, can see Must will be apparent from.Use stepper motor drive shaft to forward dynamic, can conveniently realize high, low speed operating, stepping motor rotating shaft installs additional Having torque overload device, can arrange different upper torque limit, no to scale can disengage automatically, it is to avoid damages because of overload during detection Torque sensor, also avoids the mistake of the detection data caused due to blasting.Use high-precision torque sensor simultaneously Gather bearing torque.

Compressing disk spring by thrust bearing and spring spacer, utilizing disk spring and load bar to coordinate provides axially Load, uses yielding coupling, and it is all for carrying aligning function.Ensure that the concentricity of this device, low in energy consumption, it is simple to regulation behaviour Making, make the waveform of collection and torque value more stable, numerical value is more accurate, reproducible.

Selecting scroll chuck to fix bearing, its end is jumped little, is not applied directly to pressure detect on bearing, will not be to detection axle Manufacturing into deformation, it is more accurate therefore to measure, and tests the detection bearing of different size also by the positive and negative pawl of replacing, expands survey Examination range.For testing the bearing that internal diameter is 8～50 millimeters, scroll chuck simply detects two during axially loaded Bearing adjusts with one heart, actually detected during do not clamp bearing, make detection bearing the most not by tilting load and guiding The impact of pressure and deformation, therefore test bit is more accurately and reliably, can reduce again for detecting different size bearing in process of the test, Need to constantly change the trouble of fixed test bearing frock, thoroughly solve in the past during detection, detection bearing because loading and Guiding can deform upon and cause detecting the inaccuracy of numerical value.

This assay device good concentricity in a word, bearing will not deform upon, and measures numerical value accurate, can bear bigger axial Loading force, also add micro-load bar simultaneously, drives central shaft, pressure transducer, axially loaded set to carry out as long as rotating micro-load bar Axial micro-loading, carries out the axial i.e. accurate adjustment of trace debugging, meets the demand of different user, and debugging scope is wide, debugging speed fast, tune Examination precision is high, practical.

Accompanying drawing explanation

Fig. 1, structural representation of the present utility model.

The sectional view of Fig. 2, Fig. 1.

The A A view of Fig. 3, Fig. 1.

Detailed description of the invention

Below in conjunction with the accompanying drawings embodiment of the present utility model is further described.

Such as Fig. 1～Fig. 3, disk 22 is fixing on base 13 by four screw rods on lower surface, and base plate 13 passes through upper surface On four support shafts 23 hang be fixed on the lower surface of test-bed 19.

The actuator of assay device uses motor 12, and motor is fixed on the lower surface of disk 22, stepping electricity The rotating shaft of machine 12 is connected with the lower end of torque sensor 21 by flange form torque overload device 11, and the upper end of torque sensor 21 is even Connecing yielding coupling 20, torque sensor 21 is connected with moment of torsion display 25 by lead-in wire, and the side of torque sensor 21 is fixed On clamping plate 10, clamping plate 10 are fixed in a support shaft 23.

Axially loaded set 17 is the rounded face having step surface, other end to be closing in one end open, and opening inwall, circle The boss extending band blind hole in the middle of shape face links into an integrated entity with pressure transducer 7.

Test-bed 19 upper surface fixes scroll chuck 9, and the bearing that its positive and negative pawl is respectively cooperating with various outer diameter size makes With, upper and lower detection bearing 8,18 gap that two models are identical is arranged on stairstepping test axle 24, and test axle 24 is with upper and lower The endoporus matched in clearance of detection bearing, the outer surface of lower detection bearing 18 coordinates with scroll chuck 9, the outer ring of upper detection bearing 8 Upper surface coordinates with the step surface on axially loaded set 17 inwall, and step surface also outer surface with upper detection bearing 8 contacts, examination Testing axle lower end to be connected with yielding coupling 20, test axle 24, through the through hole on scroll chuck 9 and test-bed 19, constitutes and measures Part.

Axially loaded part, is supported and fixed in test-bed 19 and load plate 27 respectively by the two ends loading stand 5.

Load bar 1 is with being threaded on it in load plate 27, and is locked in load plate with lower nut 2.

Connect thrust bearing under load bar, when can avoid rotating, cause bottom to add the rotation of carrier due to frictional force.

Being provided with the upper end of central shaft 15 in load bar 1 intermediate throughholes, the top of central shaft is screwed micro-load bar 30 Lower end, the upper end of micro-load bar 30 extends to outside load bar 1, and the upper port of load bar 1 is further fixed on top cover 28, and micro-load bar 30 regulates Being locked on top cover 28 with top nut 29 after Hao, constituting axial micro-loading, the i.e. axially loaded debugging of trace is accurate adjustment.

During use, as long as the most micro-load bar 30, micro-load bar is by central shaft 15, pressure transducer 7, axially Detection 8,18 1 less axial micro-loading forces of bearing given by loader 17.

Central shaft 15 upper end connects thrust bearing 3 and spring spacer 14, and central axle external surface is cased with disk spring 4, dish Shape spring, according to the size of loading force, can be replaced ensureing that the degree of accuracy of loading force, spring spacer 14, thrust bearing 3 are used Compressing disk spring 4, utilize disk spring 4 to coordinate the axially loaded load providing bigger with load bar 1, its concentricity is high, Low in energy consumption, safety and stability, it is simple to regulation.

Central plate 16 is fixed on loading stand 5 by angle iron 6, and central plate can move up and down along loading stand, to protect The concentricity of card top and the bottom, the lower end of central shaft 15 connects pressure transducer 7, and pressure transducer 7 lower end connects axially loaded Set 17, loads upper detection bearing 8.Pressure transducer 7 is connected with pressure display unit 26 by lead-in wire.

During use, being installed to upper and lower detection bearing 8,18 test on axle 24, test axle 24 is with yielding coupling 20 even Connecing, it is B that scroll chuck 9 supports lower detection bearing 18, carrys out the concentricity of Adjustment Tests body, then load bar 1 dextrorotation Turn that to compress butterfly spring 4, pressure transducer 7, axially loaded set 17 by thrust bearing 3 be A to upper detection bearing 8, carry out axle To loading, unclamp scroll chuck 9 after loading to be done and make it stop guiding, do not contact lower detection bearing 18, drive stepping motor 12, according to test requirements document rotation test bearing, are gathered rotation torque value by torque sensor 11, detect A, B, C six the most in three times The detection bearing of same model, detection bearing C(figure is not drawn), it is respectively mounted AB, AC, BC successively and detects, data to be collected Settle out the torque value recording each time, be followed successively by A+B=X, A+C=Y, B+C=Z, by enumerating tri-groups of data equations of X, Y, Z The torque value of mono-detection bearing of A, B, C can be obtained respectively.

This assay device solve before detection mode poor repeatability, can only use the mode of two values 1/2 detect single only Bearing torque, existing device gathers the torque value of many bearings, and its repeatability is stable, and ratio surveys two detection bearings before divided by two Method is reasonable and practical, and this assay device is rational in infrastructure, easy to operate, measures numerical value more accurate, more can obtain client's accreditation.

Embodiment: the known three groups of data detected in three times are A+B=X=10, B+C=Y=11, A+C=Z=9, obtain The single value of A, B, C:

A+B+B+C=X+Y=21 A+C=21-2B

A+C=9 i.e. 21-2B=9

B=6 A+B=10

A=4 B+C=11

C=5。

Claims (5)

1. a bearing rotary torsional moment test device, including being arranged on base plate (13), test-bed (19), loading on stand (5) Actuator, axially loaded part, measuring piece, described actuator is by the motor (12) being fixed on base plate (13), by turning round Square sensor (21) is connected with yielding coupling (20), and described torque sensor (21) is by lead-in wire with moment of torsion display (25) even Connecing, described axially loaded part is had the central shaft (15) of disk spring (4) and load bar (1) to connect into entirety by connection, described in Mandrel (15) lower end connects pressure transducer (7), and described pressure transducer (7) is connected with pressure display unit (26) by lead-in wire, Central plate (16) is being loaded on stand (5) by angle iron (6) mobile link, it is characterised in that described measuring piece is by identical two The endoporus of upper and lower detection bearing (8,18) and test axle (24) matched in clearance, the lower end of described test axle (24) and described elasticity Shaft coupling (20) connects, and external diameter and the cycle surface of described upper detection bearing (8) are axial be arranged on pressure transducer (7) Load set (17) to coordinate, the external diameter of described lower detection bearing (18) and the scroll chuck being arranged on described test-bed (19) (9) coordinating, the upper connection of the central shaft (15) of described axially loaded part has thrust bearing (3) and spring spacer (14), micro-load bar (30) coordinate with pressure transducer (7), axially loaded set (17).

Bearing rotary torsional moment test device the most according to claim 1, it is characterised in that turning of described motor (12) Add flange form torque overload device (11) on axle, and be connected with the lower end of torque sensor (21).

Bearing rotary torsional moment test device the most according to claim 1, it is characterised in that described load bar (1) intermediate throughholes Inside being provided with the upper end of central shaft (15), the top of central shaft is screwed the lower end of micro-load bar (30), micro-load bar (30) upper End extends to load bar (1) outward, and the upper port of load bar is further fixed on top cover (28), micro-load bar (30) top nut (29) locking In top cover (28) the axial micro-loading of upper composition.

Bearing rotary torsional moment test device the most according to claim 1, it is characterised in that described axially loaded set (17) is Having step surface in one end open, and opening inwall, other end is the rounded face closed, and extends band blind hole in the middle of rounded face Boss.

Bearing rotary torsional moment test device the most according to claim 1, it is characterised in that described test axle (24) is ladder Shape.