CN109341941B - Fatigue test device for pressure sensor - Google Patents
Fatigue test device for pressure sensor Download PDFInfo
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- CN109341941B CN109341941B CN201811149723.2A CN201811149723A CN109341941B CN 109341941 B CN109341941 B CN 109341941B CN 201811149723 A CN201811149723 A CN 201811149723A CN 109341941 B CN109341941 B CN 109341941B
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- fixedly connected
- pressure sensor
- supporting plate
- rotating shaft
- spring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of pressure sensors, in particular to a pressure sensor fatigue test device, wherein a rotating device comprises a rotating shaft which is rotatably connected to a supporting plate, and the rotating shaft penetrates through the supporting plate; one end of the rotating shaft is fixedly connected with a cylindrical turntable; the periphery of the turntable is uniformly and fixedly connected with a plurality of fixing plates, the fixing plates are fixedly connected with one end of a spring, and the other end of the spring is fixedly connected with a top; the fixing device comprises a plurality of mounting seats fixedly connected to the supporting plate, limiting grooves are formed in the mounting seats, pressure sensors are fixedly connected in the limiting grooves, and the vertical distance from the stress surface of each pressure sensor to the circle center of the rotary table is smaller than the vertical distance from the top to the circle center of the rotary table.
Description
Technical Field
The invention relates to the technical field of pressure sensors, in particular to a fatigue test device for a pressure sensor.
Background
A device for converting the magnitude of the force into an associated electrical signal. Forces are the direct cause of the change in motion of the material. The force sensor can detect mechanical quantities such as tension, pressure, weight, torque, internal stress and strain. The specific devices comprise metal strain gauges, pressure sensors and the like, and become indispensable core components in power equipment, engineering machinery, various machine tools and industrial automation systems.
Pressure sensor mainly is used for the change of perception power and power, in order to detect pressure sensor's life-span, need carry out the fatigue life experiment to pressure sensor, and current fatigue experiment mainly is the stressed surface that strikes pressure sensor that the steel ball that passes through the whereabouts is incessant, and this kind of fatigue experiment mode can only be simultaneously experimented to a pressure sensor in-service use, consequently has the problem of inefficiency.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a fatigue testing device for a pressure sensor, which is used to solve the problem that the conventional fatigue testing device for a pressure sensor can only perform a fatigue test on one sensor at the same time.
In order to achieve the above objects and other related objects, the invention discloses a fatigue test device for a pressure sensor, which comprises a support plate, a rotating device, a fixing device and a power device, wherein the support plate is provided with the rotating device, the fixing device and the power device;
the rotating device comprises a rotating shaft which is rotatably connected to the supporting plate, and the rotating shaft penetrates through the supporting plate; one end of the rotating shaft is fixedly connected with a cylindrical turntable; the periphery of the turntable is uniformly and fixedly connected with a plurality of fixing plates, the fixing plates are fixedly connected with one end of a spring, and the other end of the spring is fixedly connected with a top;
the fixing device comprises a plurality of mounting seats fixedly connected to the supporting plate, limiting grooves are formed in the mounting seats, pressure sensors are fixedly connected to the limiting grooves, and the vertical distance from the stress surfaces of the pressure sensors to the circle center of the rotary table is smaller than the vertical distance from the top to the circle center of the rotary table.
Preferably: the power device comprises a support fixed on the supporting plate, a servo motor and a gear box are fixedly connected to the support, an output shaft of the servo motor is fixedly connected with an input shaft of the gear box, and an output shaft of the gear box is fixedly connected with a rotating shaft.
Preferably: the contact surface of the plug and the pressure sensor is a smooth curved surface.
Preferably: and a smooth chamfer is arranged at a sideline position on the mounting seat, which is close to the turntable.
Preferably: the even setting of mount pad is around the carousel, and the mount pad constitutes a circular, and the circular and carousel that the mount pad constitutes are concentric circles.
Preferably: the included angle between the axis of the spring in the stretching direction and the circumferential surface of the turntable is 30-60 degrees or 120-150 degrees.
Preferably: the fixed plate is triangular prism type, and the fixed plate is the curved surface with the carousel contact surface.
As described above, the fatigue test device for a pressure sensor according to the present invention has the following advantageous effects: the rotating disc is driven to rotate through the rotating shaft, the ejector is driven to rotate through the fixing plate and the spring, pressure is applied to the stress surface of the pressure sensor through the ejector, due to the existence of the spring, when the ejector applies pressure to the stress surface of the pressure sensor, the ejector can compress the spring, when the distance from the ejector to the circle center of the rotating disc is smaller than the distance from the pressure sensor to the circle center of the rotating disc, the ejector can slide away from the pressure sensor, and therefore cyclic pressurization is completed.
Drawings
Fig. 1 is a front view of a fatigue testing apparatus for a pressure sensor according to the present invention.
FIG. 2 is a top view of a portion of the components of a pressure sensor fatigue testing apparatus of the present invention.
Wherein: the device comprises a supporting plate 1, a rotating shaft 2, a rotary table 3, a fixing plate 4, a spring 5, a top 6, a mounting seat 7, a limiting groove 8, a pressure sensor 9, a supporting frame 10, a gear box 11 and a servo motor 12.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Example 1
As shown in fig. 1-2, the invention discloses a fatigue test device for a pressure sensor, which comprises a support plate 1, a rotating device, a fixing device and a power device, wherein the rotating device, the fixing device and the power device are arranged on the support plate 1;
the rotating device comprises a rotating shaft 2 which is rotatably connected to the supporting plate 1, and the rotating shaft 2 penetrates through the supporting plate 1; one end of the rotating shaft 2 is fixedly connected with a cylindrical turntable 3; a plurality of fixing plates 4 are uniformly and fixedly connected to the circumferential surface of the turntable 3, the fixing plates 4 are fixedly connected with one end of a spring 5, and the other end of the spring 5 is fixedly connected with a plug 6;
fixing device includes a plurality of mount pads 7 of fixed connection in backup pad 1, spacing groove 8 has been seted up on the mount pad 7, fixedly connected with pressure sensor 9 in the spacing groove 8, the perpendicular distance of pressure sensor 9's stress surface to the 3 centre of a circle of carousel is less than the perpendicular distance of top 6 to the 3 centre of a circle of carousel.
Preferably: the power device comprises a support 10 fixed on the support plate 1, a servo motor 12 and a gear box 11 are fixedly connected to the support 10, an output shaft of the servo motor 12 is fixedly connected with an input shaft of the gear box 11, and an output shaft of the gear box 11 is fixedly connected with the rotating shaft 2.
The invention is implemented as follows:
according to fig. 1 and fig. 2, a servo motor 12 is started to drive a rotating shaft 2 to rotate through a gear box 11, the rotating shaft 2 drives a rotary table 3 to rotate, the rotary table 3 drives a fixing plate 4 to rotate, the fixing plate 4 drives a spring 5 to rotate, the spring 5 drives a top 6 to rotate, because the vertical distance from a stress surface of a pressure sensor 9 to the circle center of the rotary table 3 is less than the vertical distance from the top 6 to the circle center of the rotary table 3, the rotating top 6 can apply pressure to the stress surface of the pressure sensor 9, because of the existence of the spring 5, the top 6 can compress the spring 5, when the distance from the top 6 to the circle center of the rotary table 3 is less than the distance from the pressure sensor 9 to the circle center of the rotary table 3, the top 6 can slide away from the pressure sensor.
The invention has the beneficial effects that:
drive carousel 3 through axis of rotation 2 and rotate, thereby drive top 6 through fixed plate 4 and spring 5 and rotate, exert pressure to pressure sensor 9's stress surface through top 6, because the existence of spring 5, top 6 is when exerting pressure to pressure sensor 9's stress surface, the top can compress spring 5, when making the distance of top 6 to 3 centre of a circle of carousel be less than the distance of pressure sensor 9 to 3 centre of a circle of carousel, top 6 will slide away from pressure sensor 9, thereby accomplish circulation pressurization.
Example two
As a further improvement: the contact surface of the plug 6 and the pressure sensor 9 is a smooth curved surface. The improved advantages of the embodiment are as follows: the ejector head 6 can smoothly leave the stress surface of the pressure sensor 9, and the running stability is improved.
The remaining features and advantages of this example are the same as those of the first embodiment.
EXAMPLE III
As a further improvement: and a smooth chamfer is arranged on the side line of the mounting seat 7 close to the turntable 3. The improved advantages of the embodiment are as follows: the plug 6 can be prevented from colliding against the mount base 7, and the spring 5 can be prevented from being damaged.
The remaining features and advantages of this embodiment are the same as those of the embodiment.
Example four
As a further improvement: the installation bases 7 are uniformly arranged around the rotary table 3, the installation bases 7 form a circle, and the circle formed by the installation bases 7 and the rotary table 3 are concentric circles. The improved advantages of the embodiment are as follows: the stability of the device operation can be improved.
The other characteristics and advantages of the embodiment are the same as those of the embodiment.
EXAMPLE five
As a further improvement: the included angle between the axis of the spring 5 in the stretching direction and the circumferential surface of the turntable 3 is 30-60 degrees or 120-150 degrees. The improved advantages of the embodiment are as follows: the contact between the plug 6 and the pressure sensor 9 is facilitated, and the range of the pressure applied by the plug 6 can be increased.
The remaining features and advantages of this embodiment are the same as those of the fourth embodiment.
EXAMPLE six
As a further improvement: the fixing plate 4 is triangular prism-shaped, and the contact surface of the fixing plate 4 and the rotary disc 3 is a curved surface. The improved advantages of the embodiment are as follows: through the stability of triangle-shaped, improve the stability of device operation.
The remaining features and advantages of this embodiment are the same as those of the fifth embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.
Claims (7)
1. The utility model provides a pressure sensor fatigue test device, includes backup pad, rotating device, fixing device, power device, its characterized in that: the supporting plate is provided with a rotating device, a fixing device and a power device;
the rotating device comprises a rotating shaft which is rotatably connected to the supporting plate, and the rotating shaft penetrates through the supporting plate; one end of the rotating shaft is fixedly connected with a cylindrical turntable; the periphery of the turntable is uniformly and fixedly connected with a plurality of fixing plates, the fixing plates are fixedly connected with one end of a spring, and the other end of the spring is fixedly connected with a top;
the fixing device comprises a plurality of mounting seats fixedly connected to the supporting plate, limiting grooves are formed in the mounting seats, pressure sensors are fixedly connected to the limiting grooves, and the vertical distance from the stress surfaces of the pressure sensors to the circle center of the rotary table is smaller than the vertical distance from the top to the circle center of the rotary table.
2. A pressure sensor fatigue testing apparatus according to claim 1, characterized in that: the power device comprises a support fixed on the supporting plate, a servo motor and a gear box are fixedly connected to the support, an output shaft of the servo motor is fixedly connected with an input shaft of the gear box, and an output shaft of the gear box is fixedly connected with a rotating shaft.
3. A pressure sensor fatigue testing apparatus according to claim 2, characterized in that: the contact surface of the plug and the pressure sensor is a smooth curved surface.
4. A pressure sensor fatigue testing apparatus according to claim 3, characterized in that: and a smooth chamfer is arranged at a sideline position on the mounting seat, which is close to the turntable.
5. A pressure sensor fatigue test device according to claim 4, characterized in that: the even setting of mount pad is around the carousel, and the mount pad constitutes a circular, and the circular and carousel that the mount pad constitutes are concentric circles.
6. A pressure sensor fatigue test device according to claim 5, characterized in that: the included angle between the axis of the spring in the stretching direction and the circumferential surface of the turntable is 30-60 degrees or 120-150 degrees.
7. The fatigue testing device for the pressure sensor according to claim 6, wherein: the fixed plate is triangular prism type, and the fixed plate is the curved surface with the carousel contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149723.2A CN109341941B (en) | 2018-09-29 | 2018-09-29 | Fatigue test device for pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149723.2A CN109341941B (en) | 2018-09-29 | 2018-09-29 | Fatigue test device for pressure sensor |
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| Publication Number | Publication Date |
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| CN109341941A CN109341941A (en) | 2019-02-15 |
| CN109341941B true CN109341941B (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811149723.2A Active CN109341941B (en) | 2018-09-29 | 2018-09-29 | Fatigue test device for pressure sensor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216380A (en) * | 2008-01-11 | 2008-07-09 | 东南大学 | Pressure fatigue test stand test piece fixing device |
| CN104359757A (en) * | 2014-10-27 | 2015-02-18 | 中北大学 | Hydraulically-controlled normal-pressure-adjustable fretting fatigue testing apparatus |
| CN105865763A (en) * | 2016-03-25 | 2016-08-17 | 奇瑞汽车股份有限公司 | Fatigue testing device and method for multi-angle connection component |
| CN107238493A (en) * | 2017-07-11 | 2017-10-10 | 哈尔滨工程大学 | A kind of piston ring radial rigidity test device |
| CN108398148A (en) * | 2018-01-17 | 2018-08-14 | 蚌埠市龙子湖区金力传感器厂 | A kind of force snesor fatigue detection device |
-
2018
- 2018-09-29 CN CN201811149723.2A patent/CN109341941B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216380A (en) * | 2008-01-11 | 2008-07-09 | 东南大学 | Pressure fatigue test stand test piece fixing device |
| CN104359757A (en) * | 2014-10-27 | 2015-02-18 | 中北大学 | Hydraulically-controlled normal-pressure-adjustable fretting fatigue testing apparatus |
| CN105865763A (en) * | 2016-03-25 | 2016-08-17 | 奇瑞汽车股份有限公司 | Fatigue testing device and method for multi-angle connection component |
| CN107238493A (en) * | 2017-07-11 | 2017-10-10 | 哈尔滨工程大学 | A kind of piston ring radial rigidity test device |
| CN108398148A (en) * | 2018-01-17 | 2018-08-14 | 蚌埠市龙子湖区金力传感器厂 | A kind of force snesor fatigue detection device |
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| Publication number | Publication date |
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| CN109341941A (en) | 2019-02-15 |
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