CN208223999U - High speed scroll contact fatique wear testing stand - Google Patents
High speed scroll contact fatique wear testing stand Download PDFInfo
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- CN208223999U CN208223999U CN201820885033.2U CN201820885033U CN208223999U CN 208223999 U CN208223999 U CN 208223999U CN 201820885033 U CN201820885033 U CN 201820885033U CN 208223999 U CN208223999 U CN 208223999U
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- shaft
- movable platform
- platform
- mounting surface
- high speed
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Abstract
The utility model discloses a kind of high speed scroll contact fatique wear testing stands, it includes test platform, movable platform, loaded members, standard sample driving assembly and test sample driving assembly；Test platform is staged platform, including high mounting surface and low mounting surface, and low mounting surface is equipped with through-hole and multiple guide posts；Movable platform is placed on low mounting surface and is assemblied in outside guide post, and movable platform can be moved up and down along guide post；The loading end of loaded members passes through through-hole and is linked together with movable platform, provides the power that movable platform moves up and down；Standard sample driving assembly is installed in movable platform, and test sample driving assembly is installed on high mounting surface, and two driving assemblies are arranged in opposite directions makes two roller samples up and down to just.In use, two samples are respectively arranged on corresponding driving assembly, movable platform uplink are controlled, while controlling two sample relative rollings, sample contacts speed can be greatly improved.
Description
Technical field
The utility model relates to a kind of fatigue wear testing stands more particularly to a kind of high speed scroll contact fatique wear to test
Platform.
Background technique
Gear is the important spare part and one of most important driving form of machinery equipment, the biography of most machinery equipments
It is dynamic all to be realized by gear drive.Prevent gear failure, there is extremely important meaning in the fatigue life of raising gear.
Rolling contact fatigue failure (Rolling Contact Fatigue Failure) is the most commonly seen failure of gear
Form, circulating contact stress, Tooth friction force and lubricating oil repeated action for a period of time after, in the surface layer of gear surface
Small crackle can be generated, can extend, be connected with each other as transmission continues crackle, fall off until forming small pieces, left in the flank of tooth
Pit or point.The phases such as the contact fatigue failure of gear surface and the hardness of sliding, material between the flank of tooth and lubricating oil viscosity
It closes, higher to gear surface relative sliding velocity in a certain range, hardness is bigger, lubricating oil viscosity numerical value is higher, to gear
The performance that resisting fatigue is destroyed is more advantageous.Before carrying out design of gears, high speed scroll contact fatigue test is done for gear material
It studies influence of each factor to material fatigue life, meets most preferably setting for working condition to rationally determine when being actual design
Count parameter.
Currently, the type of the testing stand for detecting rolling contact fatigue performance is many both at home and abroad, substantially there is the examination of ball disc type
Test machine, three-point contact type testing machine, goalpost formula testing machine and roller contact formula testing machine etc..Remaining classification way of contact is
Point contact, line contact difference when engaging with gear is larger, generally simulates Gear Experimentation with roller (disk sample) contact.
But the roller fatigue wear testing stand contacted both at home and abroad for line at present, generally have the problem of the following aspects: revolving speed is not
Height, generally in 5000r/min or less；Load is inaccurate, traditional to carry additionally counterweight mode and generate error, bullet when running at high speed
Spring and lever combination mode can generate error after long time running.
Utility model content
The high speed scroll contact that sample contacts speed can be greatly improved the purpose of this utility model is to provide one kind is tired
Labor wear test platform.
This high speed scroll contact fatique wear testing stand provided by the utility model, it includes that test platform, activity are flat
Platform, loaded members, standard sample driving assembly and test sample driving assembly；Test platform is staged platform, including Gao An
Dress face and low mounting surface, low mounting surface are equipped with through-hole and multiple guide posts；Movable platform is placed on low mounting surface to be assemblied in and lead
To outside column, movable platform can be moved up and down along guide post；The loading end of loaded members passes through through-hole and movable platform is linked as one
Body provides the power that movable platform moves up and down；Standard sample driving assembly is installed in movable platform, test sample driving group
Part is installed on high mounting surface, and two driving assemblies are arranged in opposite directions makes two roller samples up and down to just.
In a specific embodiment, making the standard sample driving assembly includes motor, shaft, mounting base, bearing
Seat and shaft coupling, mounting base and bearing block are respectively arranged in the movable platform, and motor is assemblied in mounting base, shaft assembly
In in bearing block, it is linked together between shaft and the output shaft of motor by shaft coupling.
In a specific embodiment, making the test sample driving assembly includes motor, shaft, mounting base, bearing
Seat and torque sensor, bearing block, torque sensor and mounting base are successively assemblied on high mounting surface, and motor is assemblied in mounting base
On, shaft is assemblied in bearing block, and one end of torque sensor is linked together by the output shaft of shaft coupling and motor, the other end
It is linked together by shaft coupling and shaft.
For the ease of the relative position of adjusting sample, the shaft shoulder is equipped in the outer end of the shaft, in the shaft section outside the shaft shoulder
It is threaded with stop nut, roller sample is placed on the shaft shoulder through the locking limit of stop nut tie spacer；The shaft coupling
For blossom type shaft coupling.
In order to avoid shaft temperature is excessively high during test, making the bearing block includes hollow pedestal and flap, pedestal
Inner cavity and external cooling circuit communication.
For the ease of real-time monitoring, acoustic emission sensor is equipped on the outside of the bearing block of the test sample driving assembly.
In order to realize electrodeless load, make the loaded members hydraulic cylinder, the piston rod of hydraulic cylinder and the movable platform
Assembly is integrated, and oil pressure sensor is equipped in the cylinder body of hydraulic cylinder.
In order to improve test effect, making this testing stand further includes that the atomizer being assemblied on test platform and infrared measurement of temperature pass
Sensor, atomizer and infrared temperature probe are respectively arranged the two sides in two roller samples to rolling face.
In a specific embodiment, it is equipped in the center position of the low mounting surface of the test platform described logical
The quadrangle in hole, low mounting surface is respectively equipped with stepped hole；The guide post includes thread segment and light bar segment, and the outer diameter of thread segment is less than
The outer diameter of light bar segment, there are four guide posts, and four guide posts are arranged symmetrically about through-hole；Guide post is passed through downward with its thread segment
Stepped hole attaching nut and test platform fasten.
It is embedded with linear bearing at each guide post position preferably, corresponding in the movable platform, activity
Platform is integrated by linear bearing and guide post assembly.
When the utility model is used, test sample and standard sample are respectively arranged in corresponding driving assembly first
On, then controlling loaded members work makes movable platform uplink, make two sample contacts, while controlling two sample relative rollings,
Carry out the high speed scroll contact fatique wear test of roller line contact.Examination is respectively driven by two driving assemblies during test
Sample relatively rotates, and sample contacts speed can be greatly improved.
Detailed description of the invention
Fig. 1 is the schematic front view of one preferred embodiment of the utility model.
Fig. 2 is the schematic top plan view of Fig. 1.
Fig. 3 is the arrangement enlarged diagram of sample and atomizer and infrared temperature probe.
Fig. 4 is the measurement and control flow block diagram of this preferred embodiment.
Illustrate serial number:
1-test platform, 11-low mounting surfaces, 12-high mounting surfaces；
2-movable platforms；
3-loaded members, 31-piston rods；
4-code test driving assemblies, 41-mounting bases, 42-motors, 43-bearing blocks, 44-shafts,
45-shaft couplings；
5-testing experiment driving assemblies；
6-guide posts, 61-thread segments, 62-light bar segments；
7-atomizers；8-infrared temperature probes；9-torque sensors；
C-linear bearing；D-oil pressure sensor.
Specific embodiment
As shown in Figure 1 and Figure 2, this high speed scroll contact fatique wear testing stand provided in this embodiment, it includes test
Platform 1, movable platform 2, loaded members 3, standard sample driving assembly 4 and test sample driving assembly 5.
Test platform 1 is the staged platform of Z-type, and the high mounting surface 12 of low mounting surface 11 and right side including left side is low
The center position of mounting surface 11 is equipped with a through-hole, and the quadrangle of low mounting surface 11 is equipped with stepped hole, four stepped holes about
Through-hole is symmetrical arranged；Guide post 6 is equipped in each stepped hole, the lower part of guide post is thread segment 61, and top is light bar segment 62, spiral shell
The outer diameter of line section is less than the outer diameter of light bar segment, and guide post cooperates corresponding nut after passing through stepped hole downward with its underpart thread segment
It is fastened with test platform.
Through hole is equipped in movable platform 2 at corresponding four guide post positions, is equipped with linear bearing C, each straight line in hole
Bearing is placed in corresponding guide post, and the bottom end of movable platform 2 is linked together with the loaded members 3 across through-hole A, passes through load
Component work enables movable platform to move up and down along guide post.Through-hole is set to center position, and four guide posts are about logical
Hole is symmetrical arranged, the size of test force, direction when assembly regulates the verticality of five installation sites to guarantee sample load
Accurately.
It is hydraulic cylinder that loaded members 3, which are selected, and piston rod 31 and the movable platform assembly of hydraulic cylinder are integrated, hydraulic loaded
Mode is capable of the electrodeless adjustment of load added by the progress of real-time and precise, while oil pressure sensor D is equipped in the cylinder body of hydraulic cylinder,
In order to which Real-time Feedback applies loaded size.Loaded members 3 drive movable platform movement by the movement of piston rod, thus
Realize that the movement of standard sample driving assembly 4 makes two roller test specimens contact with each other and completes the application of load.
Standard sample driving assembly 4 includes mounting base 41, motor 42, bearing block 43, shaft 44 and shaft coupling 45.Mounting base
41 be L-type pedestal, and horizontal segment and movable platform are linked together by screw, and vertical section is for installing motor 42；Bearing block
43 include hollow pedestal and flap, inner cavity and the outside cooling circuit communication of pedestal, with the temperature of shaft during reduction test
Degree, pedestal are installed in movable platform, and shaft 44 passes through bearing block, and the inner end of shaft passes through the output shaft of shaft coupling 45 and motor
It is connected, outer end is equipped with the shaft shoulder, and the shaft section outer wall outside the shaft shoulder is equipped with screw thread, and standard sample is placed on the shaft shoulder and positions, and by matching
The nut check of set, when locking, can be by adding relative position of the gasket with adjustment criteria sample on the shaft shoulder.
Test sample driving assembly 5 and the structure of standard sample driving assembly 4 are essentially identical, and difference is, test sample
Torque sensor 7 is provided between the shaft of driving assembly 5 and the output shaft of motor, one end of torque sensor 9 passes through shaft coupling
The output shaft of device and motor is linked together, the other end is linked together by shaft coupling and shaft.And in test sample driving assembly 5
Bearing block be externally provided with acoustic emission sensor, can get needed for test sample acoustic emission signal, pass through computer program analysis
Signal characteristic carrys out real-time monitoring sample state of wear.It is variable-frequency motor that wherein motor, which is selected, and it is blossom type shaft coupling that shaft coupling, which is selected,
Device.
As shown in figure 3, this experimental bench is provided with atomizer 7 and infrared temperature probe 8, atomizer also on test platform
With infrared temperature probe be respectively arranged in two roller samples to rolling face two sides, atomizer when two sample contacts operate, from
Side sprays lubricating oil and is lubricated, and infrared temperature probe irradiates two sample contacts near-surface regions and obtains contact zone temperature
Degree.
Whole system is controlled by a computer and a PLC control cabinet when the present embodiment is in use；And by preposition
By the collected data transmission of acoustic emission sensor to host, infrared temperature probe is adopted for amplifier and sound emission data collecting card
The data collected are transferred directly to host；Oil pressure sensor data measured is fed back to after PLC by pressure transmitter by calculating
Machine processing analysis, torque sensor institute's measured data feed back to PLC by torque transmitter and are analyzed by computer disposal, computer root
The movement of variable-frequency motor and hydraulic cylinder is controlled by PLC according to analysis result；Whole flow process is as shown in Figure 4.
Compared to current existing device, the utility model has the advantage that sample experiment running speed up to 10000r/min；
Loading method is reliable, and not by other intermediate structures such as lever, error is small, and the load that hydraulic actuator applies is stepless adjustable, and
It can keep for a long time stable, reduce the fatigue life of sample with the error that the fluctuation of load generates, maximum load is reachable
3000N；It is suitable for the different size of sample and appearance profile, meets the needs of different tests；Acoustic emission signal monitoring can be accomplished
Monitor sample state of wear on-line.
Claims (10)
1. a kind of high speed scroll contact fatique wear testing stand, it is characterised in that: it includes test platform, movable platform, load
Component, standard sample driving assembly and test sample driving assembly；
Test platform is staged platform, including high mounting surface and low mounting surface, and low mounting surface is equipped with through-hole and multiple guiding
Column；
Movable platform is placed on low mounting surface and is assemblied in outside guide post, and movable platform can be moved up and down along guide post；
The loading end of loaded members passes through through-hole and is linked together with movable platform, provides the power that movable platform moves up and down；
Standard sample driving assembly is installed in movable platform, and test sample driving assembly is installed on high mounting surface, two drivings
Component is arranged in opposite directions makes two roller samples up and down to just.
2. high speed scroll contact fatique wear testing stand according to claim 1, it is characterised in that: the standard sample drives
Dynamic component includes motor, shaft, mounting base, bearing block and shaft coupling, and it is flat that mounting base and bearing block are respectively arranged at the activity
On platform, motor is assemblied in mounting base, and shaft is assemblied in bearing block, is connected between shaft and the output shaft of motor by shaft coupling
It is integrated.
3. high speed scroll contact fatique wear testing stand according to claim 1, it is characterised in that: the test sample drives
Dynamic component includes motor, shaft, mounting base, bearing block and torque sensor, and bearing block, torque sensor and mounting base successively fill
Assigned on high mounting surface, motor is assemblied in mounting base, and shaft is assemblied in bearing block, and one end of torque sensor passes through shaft coupling
The output shaft of device and motor is linked together, the other end is linked together by shaft coupling and shaft.
4. high speed scroll contact fatique wear testing stand according to claim 2 or 3, it is characterised in that: the shaft
Outer end is equipped with the shaft shoulder, and stop nut is threaded in the shaft section outside the shaft shoulder, and roller sample is placed on the shaft shoulder through limit spiral shell
Female tie spacer locking limit；The shaft coupling is blossom type shaft coupling.
5. high speed scroll contact fatique wear testing stand according to claim 2 or 3, it is characterised in that: the bearing block
Including hollow pedestal and flap, the inner cavity of pedestal and external cooling circuit communication.
6. high speed scroll contact fatique wear testing stand according to claim 3, it is characterised in that: the test sample drives
Acoustic emission sensor is equipped on the outside of the bearing block of dynamic component.
7. high speed scroll contact fatique wear testing stand according to claim 1, it is characterised in that: the loaded members are
Hydraulic cylinder, the piston rod of hydraulic cylinder are integrated with movable platform assembly, and oil pressure sensor is equipped in the cylinder body of hydraulic cylinder.
8. high speed scroll contact fatique wear testing stand according to claim 1, it is characterised in that: it further includes being assemblied in
Atomizer and infrared temperature probe on test platform, atomizer and infrared temperature probe are respectively arranged in two roller samples
To the two sides in rolling face.
9. high speed scroll contact fatique wear testing stand according to claim 1, it is characterised in that: the test platform
The center position of low mounting surface is equipped with the through-hole, and the quadrangle of low mounting surface is respectively equipped with stepped hole；The guide post includes
Thread segment and light bar segment, the outer diameter of thread segment are less than the outer diameter of light bar segment, and there are four guide posts, and four guide posts are about through-hole pair
Claim arrangement；Guide post passes through stepped hole attaching nut downward with its thread segment and test platform fastens.
10. high speed scroll contact fatique wear testing stand according to claim 9, it is characterised in that: the movable platform
Linear bearing is embedded at upper each guide post position of correspondence, movable platform is one by linear bearing and guide post assembly
Body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820885033.2U CN208223999U (en) | 2018-06-08 | 2018-06-08 | High speed scroll contact fatique wear testing stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820885033.2U CN208223999U (en) | 2018-06-08 | 2018-06-08 | High speed scroll contact fatique wear testing stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208223999U true CN208223999U (en) | 2018-12-11 |
Family
ID=64505421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820885033.2U Expired - Fee Related CN208223999U (en) | 2018-06-08 | 2018-06-08 | High speed scroll contact fatique wear testing stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208223999U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426795A (en) * | 2018-06-08 | 2018-08-21 | 中南大学 | High speed scroll contact fatique wear testing stand |
| CN110926980A (en) * | 2019-12-06 | 2020-03-27 | 燕山大学 | Three-wheel contact fatigue testing machine with combined action of environment and cyclic load |
-
2018
- 2018-06-08 CN CN201820885033.2U patent/CN208223999U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426795A (en) * | 2018-06-08 | 2018-08-21 | 中南大学 | High speed scroll contact fatique wear testing stand |
| CN110926980A (en) * | 2019-12-06 | 2020-03-27 | 燕山大学 | Three-wheel contact fatigue testing machine with combined action of environment and cyclic load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181211 Termination date: 20200608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |