CN105090169A - Dynamic testing cylinder with sensors arranged externally - Google Patents
Dynamic testing cylinder with sensors arranged externally Download PDFInfo
- Publication number
- CN105090169A CN105090169A CN201410657431.5A CN201410657431A CN105090169A CN 105090169 A CN105090169 A CN 105090169A CN 201410657431 A CN201410657431 A CN 201410657431A CN 105090169 A CN105090169 A CN 105090169A
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- piston
- end cap
- cylinder
- transducer
- dynamic
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Abstract
The invention discloses a dynamic testing cylinder with sensors arranged externally. The dynamic testing cylinder comprises the speed sensor (3), a piston (8) and the displacement sensor (11). The dynamic testing cylinder is characterized by being integrally structurally composed of a dynamic cylinder body, the speed sensor (3) and the displacement sensor (11). The dynamic testing cylinder with the sensors arranged externally aims at being easy to manufacture, convenient to install, debug and maintain, medium in testing precision, high in practicability, capable of meeting testing requirements of frequency features of electro-hydraulic servo valves commonly used in the industry, and especially suitable for testing devices and experiment tables for training and teaching.
Description
Technical field
The present invention relates to sensor experiment device field, especially design a kind of external dynamic test cylinder of sensor.
Background technique
The important content of electrohydraulic servo valve dynamic performance test during frequency characteristic test is the device of electrohydraulic control frequency characteristic test indispensability at dynamic test cylinder.Traditional dynamic test cylinder is built-in with the velocity transducer of specialized designs manufacture and displacement transducer obtains the flux signal of tested valve and the position signal of hydraulic piston, as shown in Figure 1.Because manufacture difficulty is large, professional very strong, maintenance difficulty, expensive, non-professional production enterprise is exclusive always.Along with the increasingly extensive application of Hydraulic servo technology, more prevalent to the demand of hydraulic servo frequency characteristic test.
Particularly the technical training department etc. of institution of higher learning's level relevant enterprise needs are in this respect very urgent.Research and develop dynamic test cylinder that is novel, that be easy to manufacture, electrohydraulic control frequency characteristic test device easy to maintenance, to meet market demand, teammate researches and develops new hydraulic pressure testing device and teaching test stand is important from closing.
Summary of the invention
The object of this invention is to provide one to be easy to manufacture, Installation and Debugging are easy to maintenance, and testing precision is medium, and practicability is good, meet the electrohydraulic control frequency characteristic test requirement that industry is conventional, and be specially adapted to the external dynamic test cylinder of sensor of training and teaching testing apparatus and test stand.
For realizing above object, the technical solution used in the present invention; A kind of external dynamic test cylinder of sensor, it comprises velocity transducer (3), piston (8), displacement transducer (11); It is characterized in that: this device integrated model mainly contains three parts and forms: dynamic cylinder, velocity transducer (3) and displacement transducer (11);
Described dynamic cylinder is end cap (6) composition having piston (8), cylinder body (9) and cylinder body (9) both sides;
Described velocity transducer (3) can be assemblied on velocity transducer lower end cap (1) freely, velocity transducer upper end cap (2) and velocity transducer lower end cap (1) are connected by screw, the lever of speed read transducer (3) is connected with the connecting screw rod (5) that the guide rod of piston (8) is installed by connecting folder (4), and velocity transducer (3) is fixed on the side of dynamic cylinder;
Described displacement transducer (11) is assemblied on displacement transducer lower end cap (10) freely, displacement transducer upper end cap (12) and displacement transducer lower end cap (10) are connected by screw, the iron core of displacement transducer (11) is connected by the guide rod of screw thread with piston (8), and displacement transducer (11) is fixed on the opposite side of dynamic cylinder.
In the present invention program, there is elongated guide rod described piston (8) both sides, and piston (8) and guide rod are that overall processing forms, and the balancing slit that the dark 1.0mm of outer surface processing oil 0.5mm of the piston told (8) is wide.
In the present invention program, this A Yong clearance seal of sealing between described piston (8) and cylinder body (9); Sealing between the elongated lever of piston (8) both sides and the end cap (6) of cylinder body (9) both sides adopts this spy of low coefficient of friction to seal.
In the present invention program, this described special envelope is for be provided with sealing material between end cap (6) and end cap cover plate (7).
Beneficial effect of the present invention: the present invention has the structure characteristic of unique different and built-in dynamic test cylinder of traditional sensors, gives prominence in following several respects advantage:
1, be easy to manufacture: the velocity transducer of this A Yong of the present invention and displacement transducer are the approved products that general, market can be bought, without the need to especial manufacture.
2, Installation and Debugging are easy to maintenance: during Installation and Debugging maintenance, the upper cover of sensor is easy to dismounting, and two sensors are also easy to dismounting, install and keep in repair very convenient, and sensor installation naked eyes at zero point are visible, are easy to adjustment, the place short time greatly.
3, applicable model: piston and cylinder body adopt clearance seal, piston guide rod and end cap adopt the Si Te of low friction to be sealed envelope, meet the testing apparatus that medium testing precision is wanted.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention
In the drawings, 1, velocity transducer lower end cap; 2, velocity transducer end cap; 3 velocity transducers; 4, folder is connected; 5, connecting screw rod; 6, end cap; 7, end cap cover plate; 8, piston; 9, cylinder body; 10, displacement transducer lower end cap; 11, displacement transducer; 12, displacement transducer upper end cap.
Embodiment
Be described specifically the present invention by reference to the accompanying drawings, as shown in Figure 1, it is which part is formed: dynamic cylinder, velocity transducer 3 and displacement transducer 11 that this device overall structure mainly contains;
Described dynamic cylinder is made up of the end cap 6 of piston 8, cylinder body 9 and cylinder body 9 both sides; Described velocity transducer 3 can be assemblied on velocity transducer lower end cap 1 freely, velocity transducer end cap 2 and velocity transducer lower end cap 1 are connected by screw, the lever of velocity transducer 3 connects by connecting the connecting screw rod 5 that the guide rod of folder piston in April 8 is installed, and by sincere for velocity transducer 3 side at dynamic cylinder; Described displacement transducer 11 is assemblied on displacement transducer lower end cap 10 freely, displacement transducer upper end cap 1 and displacement transducer 10 are connected by screw, the iron core of displacement transducer 11 is connected by the guide rod of screw thread with piston 8, and displacement transducer 11 is fixed on the opposite side of dynamic cylinder.
In the present invention program, there is elongated guide rod described piston 8 both sides, and piston 8 and guide rod are that overall processing forms; And the balancing slit that the dark 1.0mm of outer surface processing oil 0.5mm of described piston 8 is wide.
In the present invention program, described piston 8 and dare the sealing proposed between 9 and adopt clearance seal; Sealing between the elongated guide rod of piston 8 both sides and the end cap 6 of cylinder body 9 both sides adopts this spy of low coefficient of friction to seal
In the present invention program, this described special envelope is for be provided with sealing material between end cap 6 and end cap cover plate 7.
As shown in Figure 1, the working principle in real work is: tested servovalve is placed in the upper-end surface of cylinder body 9, by screw fastening in cylinder body 9 upper-end surface.High pressure oil alternation under the effect of servo valve control signal enters piston 8 both sides oil pocket, makes piston 8 in sugared body 9, do the to-and-fro motion of certain frequency.Piston 8 reciprocates through connecting screw rod 5 and is connected folder 4, drives the coil of velocity transducer 3 to do corresponding motion, thus measures the instantaneous velocity of piston.The movement velocity that velocity transducer 3 exports electric liquid signal and piston 8 is linear, and the movement velocity of piston 8 and the output flow of servovalve proportional, therefore velocity transducer 3 output voltage indirectly reacts the Flow characteristics of servovalve.The instantaneous position of piston 8 in cylinder body 9 is configured in cylinder body 9 right lateral position displacement sensor 11 and measures.Desirable servovalve frequency characteristic measurement state is the centre that piston 8 is positioned at cylinder body 9.The position of Real-Time Monitoring piston 8 is very important for measuring accuracy.
Claims (2)
1. external dynamic test cylinder of sensor, it comprises velocity transducer (3), piston (8), displacement transducer (11); It is characterized in that: this device overall structure mainly contains three parts and forms: Dong Gaigang, velocity transducer (3) and displacement transducer (11);
Described dynamic cylinder is made up of the end cap (6) of piston (8), cylinder body (9) both sides; Described velocity transducer (3) can be assemblied on velocity transducer lower end cap (1) freely, velocity transducer upper end cap (2) and velocity transducer lower end cap (1) are connected by screw, the lever of velocity transducer (3) is connected with the connecting screw rod (5) that the guide rod of piston (8) is installed by connecting folder (4), and velocity transducer (3) is fixed on the side of dynamic cylinder; Described displacement transducer (11) is assemblied on displacement transducer lower end cap (10) freely, displacement transducer upper end cap (12) and displacement transducer lower end cap (10) are connected by screw, the iron core of unique sensor (11) is connected by the guide rod of screw thread with piston (8), and by sincere for displacement transducer (11) opposite side at dynamic cylinder.
2. a kind of external dynamic test cylinder of sensor according to claim 1, is characterized in that there is Xichang guide rod described piston (8) both sides, and piston (8) and guide rod enclose beats up overall processing and form; And the balancing slit that the dark 1.0mm of outer surface processing oil 055mm of described piston (8) is wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657431.5A CN105090169A (en) | 2014-11-18 | 2014-11-18 | Dynamic testing cylinder with sensors arranged externally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410657431.5A CN105090169A (en) | 2014-11-18 | 2014-11-18 | Dynamic testing cylinder with sensors arranged externally |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090169A true CN105090169A (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410657431.5A Pending CN105090169A (en) | 2014-11-18 | 2014-11-18 | Dynamic testing cylinder with sensors arranged externally |
Country Status (1)
| Country | Link |
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| CN (1) | CN105090169A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5485790A (en) * | 1977-12-21 | 1979-07-07 | Mitsubishi Heavy Ind Ltd | Hydraulic type vibration tester |
| CN101183050A (en) * | 2007-11-30 | 2008-05-21 | 北京理工大学 | Electrohydraulic servo valve dynamic performance testing method for measuring displacement |
| CN101463847A (en) * | 2008-12-31 | 2009-06-24 | 武汉科技大学 | Load frequency response test system and method for hydraulic cylinder |
| CN102588387A (en) * | 2012-03-09 | 2012-07-18 | 湖南睿创宇航科技有限公司 | External dynamic test cylinder of sensor |
| CN202579457U (en) * | 2012-03-09 | 2012-12-05 | 湖南睿创宇航科技有限公司 | Dynamic test cylinder with external sensors |
| CN103711743A (en) * | 2013-12-30 | 2014-04-09 | 宁波市鄞州科启动漫工业技术有限公司 | Position sensing-type pneumatic cylinder |
| KR101468557B1 (en) * | 2014-07-11 | 2014-12-03 | 부림자동화(주) | Cylinder cushion an efficiency test and stroke measuring equipment and the measuring method that use folding type linear scale |
-
2014
- 2014-11-18 CN CN201410657431.5A patent/CN105090169A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5485790A (en) * | 1977-12-21 | 1979-07-07 | Mitsubishi Heavy Ind Ltd | Hydraulic type vibration tester |
| CN101183050A (en) * | 2007-11-30 | 2008-05-21 | 北京理工大学 | Electrohydraulic servo valve dynamic performance testing method for measuring displacement |
| CN101463847A (en) * | 2008-12-31 | 2009-06-24 | 武汉科技大学 | Load frequency response test system and method for hydraulic cylinder |
| CN102588387A (en) * | 2012-03-09 | 2012-07-18 | 湖南睿创宇航科技有限公司 | External dynamic test cylinder of sensor |
| CN202579457U (en) * | 2012-03-09 | 2012-12-05 | 湖南睿创宇航科技有限公司 | Dynamic test cylinder with external sensors |
| CN103711743A (en) * | 2013-12-30 | 2014-04-09 | 宁波市鄞州科启动漫工业技术有限公司 | Position sensing-type pneumatic cylinder |
| KR101468557B1 (en) * | 2014-07-11 | 2014-12-03 | 부림자동화(주) | Cylinder cushion an efficiency test and stroke measuring equipment and the measuring method that use folding type linear scale |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |