CN107356354B - Shaft pin type tension and pressure sensor - Google Patents
Shaft pin type tension and pressure sensor Download PDFInfo
- Publication number
- CN107356354B CN107356354B CN201710555654.4A CN201710555654A CN107356354B CN 107356354 B CN107356354 B CN 107356354B CN 201710555654 A CN201710555654 A CN 201710555654A CN 107356354 B CN107356354 B CN 107356354B
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- CN
- China
- Prior art keywords
- strain body
- end cover
- output terminal
- strain
- output terminals
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The strain gauge is attached to the inner wall of a blind hole on the strain body, an electric bin is formed between the strain body and a connected end cover, a transmitting circuit board is arranged in the electric bin, output terminals are arranged on the end cover, the strain gauge, the transmitting circuit board and the output terminals form a tension and pressure testing unit, the strain gauge is provided with two groups, the number of the output terminals is two, each tension and pressure testing unit is formed by connecting one group of strain gauge and one output terminal with a transmitting circuit on the transmitting circuit board, a pair of notches are formed in the surface of the end cover, the bottom surfaces of the notches incline with the horizontal plane, through holes communicated with the electric bin are formed in the bottom surfaces of the notches, and the output terminals are arranged on the through holes. In use, one of the two test units can be started and the other can be backed up, and when the started test unit fails, the other test unit can be started immediately, so that the continuity of the operation of the sensor can be ensured; the sensor is installed on equipment for outdoor operation, and when the sensor encounters rainy weather, the phenomenon of water accumulation in the notch can not occur.
Description
Technical Field
The invention relates to a sensor, in particular to a shaft pin type tension pressure sensor.
Background
The pin-type tension and pressure sensor is a sensor for measuring tension and pressure. The existing shaft pin type tension and pressure sensor has only one tension and pressure testing unit, so that the problem is that when the shaft pin type tension and pressure sensor is used on equipment working on site, once the testing unit fails, the whole sensor cannot be used, the sensor is replaced, the equipment must be stopped to work, and the working efficiency is affected. In addition, the existing shaft pin type tension pressure sensor is generally not ideal in waterproof performance, and when the shaft pin type tension pressure sensor is used on equipment in field work, water is easy to enter in rainy days, so that the failure rate is high.
Disclosure of Invention
The invention aims to provide a shaft pin type tension and pressure sensor which is provided with two test units, wherein the two test units can be used simultaneously or independently, and the sensor has good waterproof performance.
In order to achieve the above purpose, the present invention adopts the following scheme: the axle pin type tension-pressure sensor has a cylindrical strain body, on the strain body four blind holes are set, on the inner wall of said blind holes a strain gauge is stuck, one end of said strain body is connected with end cover, between end cover and strain body an electric bin is formed, in the electric bin a transmitting circuit board is mounted, on the outside of said end cover an output terminal is mounted, and the strain gauge, transmitting circuit board and output terminal are formed into two groups of tension-pressure test units, and two output terminals are set, and the two tension-pressure test units are formed from a group of strain gauges, an output terminal and transmitting circuit on the transmitting circuit board, and two tension-pressure test units are mutually independent, on the surface of end cover a pair of notches whose cross-section is formed into L-form are cut, and two notches are symmetrically arranged along the axis of the strain body, and under the working state of said strain body the bottom surface of notch on the end cover is inclined with horizontal plane, and one side of said bottom surface close to the axis of strain body is higher than another side opposite to that of said strain body, on the bottom surface of notch is equipped with through hole, and the through hole is communicated with electric bin.
As can be seen from the above scheme, the pin-type tension pressure sensor provided by the invention has two independent test units, and as the two test units can be used independently, in actual use, one of the two test units can be started and the other can be used as a backup, in operation, when the started test unit fails, the other test unit can be started immediately, thereby ensuring the continuity of the operation of the sensor and the equipment; in addition, because the bottom surface and the horizontal plane slope of breach, when this sensor is installed on the equipment of outdoor operation, when meetting the rainwater weather, the rainwater in the entering breach can flow along its bottom surface, can not appear ponding phenomenon, guarantees that electric storehouse does not intaking.
The invention has reasonable structure, convenient use, strong continuous use performance and good waterproof performance.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a left side view of fig. 1.
Detailed Description
The invention is further described below with reference to examples and figures.
See fig. 1, 2 and 3
The pin-type tension pressure sensor provided by the invention is provided with a cylindrical strain body 1, wherein four blind holes 1a are formed in the strain body 1, and strain gauges 5 are attached to the inner walls of the blind holes 1 a. One end of the strain body 1 is connected with an end cover 2, an electric bin 3 is formed between the end cover 2 and the strain body 1, a transmitting circuit board 4 is arranged in the electric bin 3, and an output terminal 8 is arranged on the outer side of the end cover 3.
In the invention, two groups of strain gauges 5 are provided, two output terminals 8 are provided, two tension and pressure test units are provided, each tension and pressure test unit is composed of one group of strain gauges 5, one output terminal 8 and a transmitting circuit on a transmitting circuit board 4, and the two tension and pressure test units are mutually independent. The connection of the strain gauges, the output terminals and the transmitter circuit is conventional.
See FIG. 3
A pair of notches 2a with L-shaped cross sections are formed on the surface of the end cover 2, and the two notches 2a are symmetrically arranged along the axis of the strain body 1. In the working state of the strain body 1, the bottom surface of the notch 2a on the end cover 2 is inclined to the horizontal plane, and one side of the bottom surface 2a, which is close to the axis of the strain body, is higher than the other side opposite to the bottom surface. A through hole 2b is arranged on the bottom surface of the notch 2a, the through hole 2b is communicated with the electric bin 3, and an output terminal 8 is arranged on the through hole 2 b.
In this embodiment, a seal ring 9 is provided between the output terminal 8 and the inner wall of the through hole 2b in order to ensure the sealing property of the electronic chamber 3. In addition, each output terminal 8 is connected with a connecting belt 7, the free end of the connecting belt 7 is movably connected with a waterproof cover 6, the waterproof cover 6 is provided with internal threads, and the output terminal 8 is provided with external threads matched with the internal threads of the waterproof cover 6. When a certain tension and compression testing unit is used, the waterproof cover 6 on the output terminal 8 of the unit is opened, and the output terminal 8 is connected with the signal receiving device, so that tension and compression testing can be performed. For another temporarily unused pull-pressure test unit, the output terminals 8 of the unit are covered by a waterproof cover 6.
Claims (2)
1. The utility model provides a pivot formula draws pressure sensor, it has a cylindric strain body, is equipped with four blind holes on the strain body, is equipped with the strainometer on the inner wall of blind hole, and the one end hookup of strain body has the end cover, is formed with an electric storehouse between end cover and the strain body, and the transmission circuit board is equipped with in the electric storehouse, is equipped with output terminal on the outside of end cover, strainometer, transmission circuit board and output terminal constitution draw pressure test unit, its characterized in that: the strain gauge is provided with two groups of output terminals, two pull pressure test units are provided, each pull pressure test unit is formed by connecting one strain gauge group, one output terminal and a transmitting circuit on a transmitting circuit board, the two pull pressure test units are mutually independent, a pair of notches with L-shaped cross sections are formed in the surface of the end cover, the two notches are symmetrically arranged along the axis of the strain body, the bottom surface of the notch on the end cover is inclined with the horizontal plane in the working state of the strain body, one side of the bottom surface, which is close to the axis of the strain body, is higher than the other side, which is opposite to the axis of the strain body, of the bottom surface of the notch, a through hole is formed in the bottom surface of the notch, the through hole is communicated with an electric bin, and the output terminal is arranged on the through hole.
2. The pin pull pressure sensor of claim 1, wherein: a sealing ring is arranged between the output terminals and the inner wall of the through hole, each output terminal is connected with a connecting belt, the free end of each connecting belt is movably connected with a waterproof cover, the waterproof cover is provided with internal threads, and the output terminals are provided with external threads matched with the internal threads of the waterproof cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555654.4A CN107356354B (en) | 2017-07-10 | 2017-07-10 | Shaft pin type tension and pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710555654.4A CN107356354B (en) | 2017-07-10 | 2017-07-10 | Shaft pin type tension and pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107356354A CN107356354A (en) | 2017-11-17 |
| CN107356354B true CN107356354B (en) | 2023-08-22 |
Family
ID=60291696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710555654.4A Active CN107356354B (en) | 2017-07-10 | 2017-07-10 | Shaft pin type tension and pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107356354B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3995476A (en) * | 1975-12-30 | 1976-12-07 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Miniature biaxial strain transducer |
| CN103528724A (en) * | 2013-10-27 | 2014-01-22 | 蚌埠日月仪器研究所有限公司 | Integrated axial force and torque sensor for polished rods of rod-pumped well |
| CN206920045U (en) * | 2017-07-10 | 2018-01-23 | 蚌埠日月仪器研究所有限公司 | Axial pin type pull pressure sensor |
-
2017
- 2017-07-10 CN CN201710555654.4A patent/CN107356354B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3995476A (en) * | 1975-12-30 | 1976-12-07 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Miniature biaxial strain transducer |
| CN103528724A (en) * | 2013-10-27 | 2014-01-22 | 蚌埠日月仪器研究所有限公司 | Integrated axial force and torque sensor for polished rods of rod-pumped well |
| CN206920045U (en) * | 2017-07-10 | 2018-01-23 | 蚌埠日月仪器研究所有限公司 | Axial pin type pull pressure sensor |
Non-Patent Citations (1)
| Title |
|---|
| 唐亮 ; 杨昌棋 ; 龙血松 ; 彭向和 ; .高拉扭比的复合式传感器研究.传感技术学报.2011,(第04期),46-50. * |
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| Publication number | Publication date |
|---|---|
| CN107356354A (en) | 2017-11-17 |
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