CN205317481U - Bicycle crank assembly fatigue testing machine - Google Patents
Bicycle crank assembly fatigue testing machine Download PDFInfo
- Publication number
- CN205317481U CN205317481U CN201520883153.5U CN201520883153U CN205317481U CN 205317481 U CN205317481 U CN 205317481U CN 201520883153 U CN201520883153 U CN 201520883153U CN 205317481 U CN205317481 U CN 205317481U
- Authority
- CN
- China
- Prior art keywords
- force
- stepping motor
- linear stepping
- frame
- force transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009661 fatigue test Methods 0.000 title abstract description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a bicycle crank assembly fatigue testing machine that comprises controller, linear stepping motor, force transducer, crank sub -assembly anchor clamps, application of force pressure head, frame. Linear stepping motor install in the frame linear stepping motor's rotor screw rod and force transducer's one end mechanical connection, force transducer's the other end and application of force anchor clamps mechanical connection, crank sub -assembly anchor clamps install in the frame for the installation is by the test piece, the controller be connected with linear stepping motor, force transducer electricity respectively, application of force system is constituteed to linear stepping motor, force transducer, application of force pressure head, and two application of force systems install in the frame side by side. The utility model discloses because it is the driving source to have adopted linear stepping motor, make the response performance of this testing machine and stability obtain balanced the improvement, the simple structure of this system has simultaneously improved the reliability of system.
Description
Art
This utility model relates to a kind of bicycle crank assembly fatigue experimental device, and dynamic response performance and stability especially can be made to be equalized the cycle frame vertical force fatigue machine improved.
Background technology
In current QB1880 2008 " cycle frame " standard to crank assembly fatigue test except the force value defining imposed load and test number (TN), also specify maximum test frequency and should be 25HZ.
The crank assembly fatigue machine being currently known, its force application system one is to be made up of force cylinder or hydraulic cylinder, control system, force transducer; Owing to pneumatically or hydraulically force application system is stressed and the restriction of cylinder diameter, its movement velocity is relatively low, typically up to can only achieve 3 5HZ, and needs special air pressure or hydraulic workstation; Another kind is open (bulletin) number: " a kind of cycle frame vertical force fatigue machine " involved by CN203732244U, although its force application system have employed linear electric motors, high test frequency can be provided, but its volume is bigger, particularly it controls, debugs and safeguards rather complicated, operation inconvenience.
Summary of the invention
In order to overcome the problem that existing crank assembly fatigue machine force application system frequency is low, this utility model provides a kind of testing machine meeting maximum test frequency. This testing machine, while ensure that force precision, improves the frequency of test.
This utility model be the technical scheme is that to be constituted bicycle crank assembly fatigue machine by controller, linear stepping motor, force transducer, crank assembly fixture, force pressure head, frame. Described linear stepping motor is arranged in frame, and the multi-rotor screw of linear stepping motor is mechanically connected with one end of force transducer, and the other end of force transducer is mechanically connected with force fixture; Described crank assembly fixture is arranged in frame, is used for installing test specimen; Described controller electrically connects with linear stepping motor, force transducer respectively; Linear stepping motor, force transducer, force pressure head composition force application system, two force application systems are arranged in frame side by side.
Controller drives linear stepping motor to rotate, the multi-rotor screw of linear stepping motor passes through force transducer and force fixture to tested crank assembly imposed load, the change that force transducer is exerted oneself according to the size detection of imposed load, it is then converted into the signal of telecommunication and is sent to controller, controller, according to this signal and the predetermined load applied, controls the rotation of linear stepping motor;When a force application system reaches the load of predetermined applying, controller drives what this linear stepping motor returned to simultaneously drive another force application system imposed load, and so forth, tests.
The beneficial effects of the utility model are, are drive source owing to have employed linear stepping motor, make the dynamic response performance of this testing machine and stability be equalized improving; Native system technology maturation, simple in construction, improve the reliability of system simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is structural representation front view,
Fig. 2 is structural representation side view.
1. controller in figure, 2. linear stepping motor, 3. force transducer, 4. force fixture, 5. crank assembly fixture, 6. frame, 7. test specimen
Detailed description of the invention
Linear stepping motor (2) described in the drawings is arranged in frame (6); The upper end of force transducer (3) is connected with the multi-rotor screw of linear stepping motor (2), and lower end is connected with force fixture (4); Test specimen (7) is installed on crank assembly fixture (5), and force fixture (4) is connected with test specimen (7); Controller (1) is electrically connected with linear stepping motor (2), force transducer (3) respectively; Linear stepping motor (2), force transducer (3), force fixture (4) constitute force application system, and two force application systems are arranged in frame side by side.
When starting to test, test specimen (7) is installed on crank assembly fixture (5),
Controller (1) drives linear stepping motor (2) motion, and the multi-rotor screw of linear stepping motor (2) passes through force transducer (3) and force fixture (4) to test specimen (7) imposed load; Force transducer (3) goes out the change of force value according to the size detection of imposed load, convert the signal of telecommunication to and be sent to controller (1), controller (1), according to this signal and the predetermined load applied, controls the motion of linear electric motors (2). When reaching the load of predetermined applying, controller (1) drives what this linear stepping motor (2) returned to simultaneously drive another force application system imposed load, and so forth, tests.
Claims (1)
1. a bicycle crank assembly fatigue machine, is characterized in that including controller, linear stepping motor, force transducer, crank assembly fixture, force pressure head, frame; Described linear stepping motor is arranged in frame, and the multi-rotor screw of linear stepping motor is mechanically connected with one end of force transducer, and the other end of force transducer is mechanically connected with force fixture; Described crank assembly fixture is arranged in frame, is used for installing test specimen; Described controller electrically connects with linear stepping motor, force transducer respectively; Linear stepping motor, force transducer, force pressure head composition force application system, two force application systems are arranged in frame side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520883153.5U CN205317481U (en) | 2015-11-04 | 2015-11-04 | Bicycle crank assembly fatigue testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520883153.5U CN205317481U (en) | 2015-11-04 | 2015-11-04 | Bicycle crank assembly fatigue testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205317481U true CN205317481U (en) | 2016-06-15 |
Family
ID=56311826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520883153.5U Expired - Fee Related CN205317481U (en) | 2015-11-04 | 2015-11-04 | Bicycle crank assembly fatigue testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205317481U (en) |
-
2015
- 2015-11-04 CN CN201520883153.5U patent/CN205317481U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161229 Address after: 300111 the Yellow River Road, Tianjin, No. 501, No. Patentee after: TIANJIN BICYCLE RESEARCH ACADEMY, CHINA Patentee after: TIANJIN QIJU TECHNOLOGY CO.,LTD. Address before: 300111 the Yellow River Road, Tianjin, No. 501, No. Patentee before: TIANJIN BICYCLE RESEARCH ACADEMY, CHINA |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 |