CN2335136Y - Pressure generator for pressure calibrating - Google Patents
Pressure generator for pressure calibrating Download PDFInfo
- Publication number
- CN2335136Y CN2335136Y CN 98202705 CN98202705U CN2335136Y CN 2335136 Y CN2335136 Y CN 2335136Y CN 98202705 CN98202705 CN 98202705 CN 98202705 U CN98202705 U CN 98202705U CN 2335136 Y CN2335136 Y CN 2335136Y
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- pressure
- piston
- gear
- pair
- nut
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Abstract
The utility model relates to a pressure generator for pressure calibration, which comprises a piston, a piston rod and a screw rod connected with the piston. The utility model is characterized in that the utility model also comprises a gear; a nut of the screw rod and a driven wheel of the gear are fixed together and are installed on a bearing; a driving wheel of the gear is engaged with the driven wheel together; an electric machine is connected with the driving wheel; when the driving wheel rotates, the driving wheel can drive the driven wheel to rotate; because the nut can not move and the screw rod can not rotate, the screw rod only can move, so that the piston can be pushed to do the motion; the motion of the piston enables a pressure transmitting medium of a piston barrel to produce pressure. Compared with the prior art, the utility model has the advantages of high control precision, large speed reducing ratio, high driving efficiency, labor saving, etc. The utility model can also be connected with the electric machine to realize the automatic control and the electrification of a pressure calibrating device.
Description
The utility model relates to a kind of pressure-generating device, especially for the pressure-generating device of pressure calibration.
Pressure-generating device is the instrument that is used for producing and regulating various base measuring pressures.The pressure-generating device that is used for pressure calibration that uses in the commercial production mostly is the hand-rail type forcing pump at present, it is by handwheel, sliding screw, piston, composition such as piston cylinder and leather cup, the nut and the piston cylinder of sliding screw link together, be fixed on the pedestal of calibrating installation, can not move, handwheel is installed in an end of screw mandrel, fixedlys connected with screw mandrel, and the other end of screw mandrel is equipped with piston, when rotating handwheel, handwheel and screw mandrel just not only rotate but also move together, and screw mandrel promotes piston motion, and compression is contained in the liquid in piston cylinder and the calibrating installation duct chamber, and generation pressure, leather cup is contained in the top of piston, seals, and prevents the liquid leakage.The pressure-generating device of this structure because its handwheel and screw mandrel not only rotate but also move, therefore can not can not be realized electrification and automation mechanized operation by driven by motor; In addition,, produce bigger resistance because the efficient of sliding screw is low, the operation effort, and control accuracy is low, and reduction gear ratio is little.
The purpose of this utility model is to provide a kind of realize electrification and robotization, control accuracy height, the pressure-generating device that is used for pressure calibration of rapid operation.
The purpose of this utility model is achieved in that a kind of pressure-generating device that is used for pressure calibration, comprise piston, piston cylinder, with the screw pair that piston joins, its characteristics are: what a) screw pair adopted is ball wire bar pair; B) nut that also comprises one or more levels gear pair and restriction ball wire bar pair moves forward and backward two position-limit mechanisms that rotate with screw mandrel, and the final stage engaged wheel of ball wire bar pair nut and one or more levels gear pair is fixed together by securing member.When the driving wheel of gear pair rotates, move like this, thereby promote piston motion forward in piston cylinder, make pressure transmitting medium produce pressure with regard to the screw mandrel that drives ball wire bar pair.
The utility model compared with prior art has following advantage:
1. adopt the ball wire bar pair nut to rotate, the type of belt drive that screw mandrel moves can be installed motor, realizes the automatic control and the electrification of pressure calibration device;
2. ratio of gear is stable, the transmission accuracy height, because the number of teeth of gear is certain, skidding or heavily going on foot phenomenon can not appear in their rotations that is meshing with each other;
3. owing to adopt the method for gear and the multistage transmission of ball screw,, be convenient to segmentation, can accurately adjust pressure, improved control accuracy so the reduction of speed ratio of gear is very big;
4. the transmission efficiency height is laborsaving, owing to give less moment of torsion of driving wheel, just makes bigger power of axial generation of screw mandrel, and compressible liquid produces the high pressure up to 60MPa.
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is a structure cut-open view of the present utility model.
Referring to accompanying drawing 1, the driving wheel 2 of present embodiment is installed on the cabinet 1 by bearing 18, driving wheel 2 meshes together with engaged wheel 6, engaged wheel 6 passes through screw 19 with ball wire bar pair nut 17, axle sleeve 4, flat key 12, trip bolt 14 is fixed together, bearing 3, axle sleeve 4, cabinet 1 and chassis lid 16, clamp nut 13 moves forward and backward by their shape and position engagement limits ball wire bar pair nut 17, promptly by bearing 3, cabinet 16, clamp nut 13 is fixedly supported on the cabinet 1 ball wire bar pair nut 17 and axle sleeve 4, can only rotate, can not move forward and backward; The position-limit mechanism that the restriction screw mandrel rotates is that the end at ball wire bar pair screw mandrel 11 processes a plane for one section, connects true slip with right chassis lid 5 planes, it can not be rotated, so screw mandrel 11 can only move.When the driving wheel 2 that joins with motor rotates, driving engaged wheel 6 rotates, thereby ball wire bar pair nut 17 is rotated, screw mandrel 11 moves, thereby promoting piston 10 moves in piston cylinder 7, compression to some extent is contained in the liquid in piston cylinder 7 and the calibrating installation pipeline 15, produces the pressure of different sizes.
Present embodiment adopts a pair of gear drive, also can adopt many to gear drive; Gear pair also can adopt the worm and gear structure, worm gear and ball wire bar pair nut are fixed together by securing member similar to the aforementioned embodiment, the worm screw that is connected with motor is installed on the bearing, bearing and cabinet are fixed, like this when worm gear rotates, nut only rotates, and screw mandrel moves, thereby driven plunger moves.
Claims (4)
1. pressure-generating device that is used for pressure calibration, comprise piston, piston cylinder, with the screw pair that piston joins, it is characterized in that:
What a. screw pair adopted is ball wire bar pair;
B. comprise also that one or more levels gear pair and restriction ball wire bar pair nut move forward and backward two position-limit mechanisms that rotate with screw mandrel, the final stage engaged wheel of the nut of ball wire bar pair and one or more levels gear pair is fixed together by securing member.
2. pressure-generating device according to claim 1 is characterized in that: gear pair also can adopt the worm and gear structure, and the nut of worm gear and ball wire bar pair is fixed together by securing member.
3. pressure-generating device according to claim 1 is characterized in that: the position-limit mechanism that restriction ball wire bar pair nut moves forward and backward is made of cabinet and chassis lid, the bearing and the axle sleeve that are installed on the cabinet.
4. pressure-generating device according to claim 1 is characterized in that: the position-limit mechanism that the restriction screw mandrel rotates is that the end at screw mandrel processes a plane, makes it closely contact slip with the chassis lid plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98202705 CN2335136Y (en) | 1998-03-24 | 1998-03-24 | Pressure generator for pressure calibrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98202705 CN2335136Y (en) | 1998-03-24 | 1998-03-24 | Pressure generator for pressure calibrating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2335136Y true CN2335136Y (en) | 1999-08-25 |
Family
ID=33959700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98202705 Expired - Fee Related CN2335136Y (en) | 1998-03-24 | 1998-03-24 | Pressure generator for pressure calibrating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2335136Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344384A (en) * | 2011-12-23 | 2013-10-09 | 合肥工业大学 | Pressure fluctuation calibration device of differential pressure sensor |
| CN103398820A (en) * | 2013-08-20 | 2013-11-20 | 蚌埠日月电子科技有限责任公司 | Isolated liquid medium pressure transmitter |
| CN105181212A (en) * | 2015-10-21 | 2015-12-23 | 重庆市银钢一通科技有限公司 | Chain wheel torque measuring device |
| CN105692510A (en) * | 2016-01-20 | 2016-06-22 | 广东工业大学 | Underwater soil taking device |
| CN106969983A (en) * | 2017-05-09 | 2017-07-21 | 绍兴市容纳测控技术有限公司 | A kind of Demolition Tester of Tubing Pressure Resistance |
| CN110757131A (en) * | 2019-11-05 | 2020-02-07 | 东莞大昇自动化机械设备有限公司 | Automatic pressing mechanism |
| CN112729673A (en) * | 2020-11-20 | 2021-04-30 | 北京航天试验技术研究所 | Analog force automatic loading device for rocket engine thrust calibration |
-
1998
- 1998-03-24 CN CN 98202705 patent/CN2335136Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344384A (en) * | 2011-12-23 | 2013-10-09 | 合肥工业大学 | Pressure fluctuation calibration device of differential pressure sensor |
| CN103344384B (en) * | 2011-12-23 | 2015-02-04 | 合肥工业大学 | Pressure fluctuation calibration device of differential pressure sensor |
| CN103398820A (en) * | 2013-08-20 | 2013-11-20 | 蚌埠日月电子科技有限责任公司 | Isolated liquid medium pressure transmitter |
| CN105181212A (en) * | 2015-10-21 | 2015-12-23 | 重庆市银钢一通科技有限公司 | Chain wheel torque measuring device |
| CN105692510A (en) * | 2016-01-20 | 2016-06-22 | 广东工业大学 | Underwater soil taking device |
| CN106969983A (en) * | 2017-05-09 | 2017-07-21 | 绍兴市容纳测控技术有限公司 | A kind of Demolition Tester of Tubing Pressure Resistance |
| CN110757131A (en) * | 2019-11-05 | 2020-02-07 | 东莞大昇自动化机械设备有限公司 | Automatic pressing mechanism |
| CN112729673A (en) * | 2020-11-20 | 2021-04-30 | 北京航天试验技术研究所 | Analog force automatic loading device for rocket engine thrust calibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |