CN202648871U - Full-automatic pressure calibration stand - Google Patents
Full-automatic pressure calibration stand Download PDFInfo
- Publication number
- CN202648871U CN202648871U CN 201220327679 CN201220327679U CN202648871U CN 202648871 U CN202648871 U CN 202648871U CN 201220327679 CN201220327679 CN 201220327679 CN 201220327679 U CN201220327679 U CN 201220327679U CN 202648871 U CN202648871 U CN 202648871U
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- CN
- China
- Prior art keywords
- pressure
- gear
- chassis
- worm
- piston
- 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 - Lifetime
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Abstract
Disclosed in the utility model is a full-automatic pressure calibration stand that comprises a chassis. A pressure output interface is arranged outside the chassis. A variable-speed motor, a worm gear, a gear box, and a lead screw piston mechanism are successively arranged inside the chassis from left to right. And the piston is connected with the pressure output interface and a pressure sensor, wherein the pressure output interface and the pressure sensor are arranged outside the chassis. According to the utility model, a method of multi-stage transmission of the worm gear and the lead screw is employed, so that the speed reduction transmission ratio is high, subdivision can be carried out conveniently, the pressure can be adjusted accurately, and the control precision can be improved. Moreover, because the worm gear mechanism has undirectionality, the force can only be transmitted from the worm side to the gear side and the backward transmission can not be carried out, so that the worm gear is the equal of a natural brake. When the motor stops making motions, the piston mechanism stops the operation, so that no reverse motion is caused by the pressure; therefore, the transmission can be carried out stably and the noise is low. Moreover, the initial positions for piston controlling are different, thereby realizing the measurement of positive and negative pressures.
Description
Technical field
The utility model relates to a kind of full-automatic pressure checking table.
Background technology
At present, because the transmission effect of worm and gear is lower, pressure calibration does not generally adopt worm and gear, and adopts gear drive, rises to press speed but pressure controling precision is extremely low, easily precision pressure surveying instrument mineralization pressure is impacted, the performances such as the stability of reduction surveying instrument, accuracy are when motor is out of service, if brake system is not installed, the thrust that pressure produces in the piston makes the gear train reversing, and pressure can descend automatically.
Summary of the invention
The purpose of this utility model is, provides a kind of ratio of gear stable, and high control precision has self-stopping full-automatic pressure checking table.
For realizing the purpose of this utility model, intend by the following technical solutions:
The full-automatic pressure checking table comprises cabinet, and cabinet is provided with the Output pressure interface outward, is provided with successively from left to right change speed motor, worm and gear, wheel box, screw mandrel piston mechanism in the cabinet, and piston links to each other with cabinet Output pressure interface, pressure transducer outward.
The utility model adopts the method for worm and gear and the multistage transmission of screw mandrel, therefore the reduction of speed ratio of gear is large, be convenient to segmentation, but accurate adjustment pressure has improved control accuracy, and worm-and-wheel gear has one-way, can only transmit power from worm gear side direction worm screw side, can not back transfer, be equivalent to one and naturally brake, motor one stop motion, piston mechanism just can be out of service, can not produce the counter motion that causes owing to pressure, and, worm drive is equivalent to worm drive, be multiple tooth engaged transmission, therefore stable drive, noise is very little, and, the reference position of control piston is different, can realize the measurement of positive/negative-pressure.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, cabinet; 2, Output pressure interface; 3, change speed motor; 4, worm and gear; 5, wheel box; 6, screw mandrel piston mechanism; 7, pressure transducer.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
In conjunction with Fig. 1, the full-automatic pressure checking table that the present embodiment proposes, comprise cabinet 1, the cabinet 1 outer Output pressure interface 2 that is provided with, be provided with successively from left to right change speed motor 3, worm and gear 4, wheel box 5, screw mandrel piston mechanism 6 in the cabinet 1, piston links to each other with cabinet 1 Output pressure interface 2, pressure transducer 7 outward.
The utility model adopts the method for worm and gear 4 and the multistage transmission of screw mandrel, therefore the reduction of speed ratio of gear is large, be convenient to segmentation, but accurate adjustment pressure, improved control accuracy, and worm and gear 4 has one-way, can only transmit power from worm gear side direction worm screw side, can not back transfer, be equivalent to one and naturally brake, motor one stop motion, piston mechanism just can be out of service, can not produce because the counter motion that pressure causes, therefore stable drive, noise are very little, the reference position of control piston is different, can also realize the measurement of positive/negative-pressure.
Above demonstration and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. the full-automatic pressure checking table comprises cabinet, and cabinet is provided with the Output pressure interface outward, is provided with successively from left to right change speed motor, worm and gear, wheel box, screw mandrel piston mechanism in the cabinet, and piston links to each other with cabinet Output pressure interface, pressure transducer outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220327679 CN202648871U (en) | 2012-07-03 | 2012-07-03 | Full-automatic pressure calibration stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220327679 CN202648871U (en) | 2012-07-03 | 2012-07-03 | Full-automatic pressure calibration stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648871U true CN202648871U (en) | 2013-01-02 |
Family
ID=47417964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220327679 Expired - Lifetime CN202648871U (en) | 2012-07-03 | 2012-07-03 | Full-automatic pressure calibration stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648871U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100084A (en) * | 2018-10-29 | 2018-12-28 | 德州职业技术学院（德州市技师学院） | One kind being used for pressure sensor quality detection apparatus |
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
-
2012
- 2012-07-03 CN CN 201220327679 patent/CN202648871U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100084A (en) * | 2018-10-29 | 2018-12-28 | 德州职业技术学院（德州市技师学院） | One kind being used for pressure sensor quality detection apparatus |
| CN109100084B (en) * | 2018-10-29 | 2020-06-30 | 德州职业技术学院（德州市技师学院） | Quality detection equipment for pressure sensor |
| CN111693210A (en) * | 2020-07-01 | 2020-09-22 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
| CN111693210B (en) * | 2020-07-01 | 2021-08-27 | 陕西省计量科学研究院 | Siphon type negative pressure alternating test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |