CN205679186U - A kind of stroking mechanism displacement detector - Google Patents
A kind of stroking mechanism displacement detector Download PDFInfo
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- CN205679186U CN205679186U CN201620543757.XU CN201620543757U CN205679186U CN 205679186 U CN205679186 U CN 205679186U CN 201620543757 U CN201620543757 U CN 201620543757U CN 205679186 U CN205679186 U CN 205679186U
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- displacement
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- magnetic ring
- variable bar
- reaction magnetic
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Abstract
This utility model relates to a kind of stroking mechanism displacement detector, including displacement transducer, side cover, variable bar and reaction magnetic ring, institute's displacement sensors part stretches into inside variable bar, and described reaction magnetic ring embeds inside described variable bar, and described side cover is connected with described variable bar.This utility model is due to nothing directly contact between displacement transducer and reaction magnetic ring, long-time use also will not produce loss, substantially increase the service life of displacement detector, further, it accurately measures reaction magnetic ring actual displacement by displacement transducer, and then obtain the actual displacement of variable bar, improve the displacement measurement accuracy of variable bar, thus improve the control accuracy of control system.
Description
Technical field
This utility model relates to a kind of detection device, particularly relates to a kind of stroking mechanism displacement detector.
Background technology
Variable plunger pump is the dynamical element in hydraulic system, provides liquid for the executive component in hydraulic system
Pressure energy, i.e. to the hydraulic oil of executive component output certain flow, so that the pressure of liquid can be changed by executive component
For mechanical energy, drive load to make straight reciprocating motion or gyration, wherein, above-mentioned Variable plunger pump be divided into quantitative plunger pump and
Variable plunger pump, Variable plunger pump is called for short variable pump.
At present, common Variable plunger pump is axial variable displacement plunger pump, this axial variable displacement plunger pump include variable pump body,
Variable oil cylinder, controller, control valve, displacement transducer etc., wherein, control valve and displacement transducer are axial variable displacement plunger pump
Electric proportional control, for the flow signal according to user's input, adjusts the oil pump capacity of variable pump body so that variable axial plunger
The hydraulic pressure oil mass that pump is exported is the flow needed for user.
As it is shown in figure 1, conventional variable mechanism displacement detection device, including displacement transducer 100, housing 200 and variable
Bar 300, its displacement transducer used is LVDT(Linear Variable Differential Transformer) type position
Displacement sensor, in view of this kind of displacement transducer accuracy of detection is relatively low, and is tangent displacement sensor, and life-time service easily causes
Abrasion so that displacement detecting precise decreasing, causes degradation problem under the control accuracy of control system.It is therefore desirable to propose one
New exclusive, in the variable bar displacement detector of variable pump, improves accuracy of detection, thus improves the control accuracy of control system
Etc. problem.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of stroking mechanism displacement detector, it is possible to increase displacement
Accuracy of detection, thus improve the control accuracy of the control system of variable pump.
In order to solve above-mentioned technical problem, the utility model proposes a kind of stroking mechanism displacement detector, be exclusively used in change
Amount pump, including displacement transducer, side cover, variable bar and reaction magnetic ring, institute's displacement sensors part stretches in variable bar
Portion, described reaction magnetic ring embeds inside described variable bar, and described side cover is connected with described variable bar.
Preferably, institute's displacement sensors includes displacement transducer extension, and institute's displacement sensors extension is column.
Preferably, one end of described variable bar is provided with blind hole, and described blind hole is column.
Preferably, the internal diameter of described blind hole is more than the external diameter of institute's displacement sensors extension, and the length of described blind hole is big
Length in institute's displacement sensors extension.
Preferably, described reaction magnetic ring in the form of a ring and embeds on the inwall of described variable bar blind hole, described reaction magnetic ring
Internal diameter is more than the external diameter of institute's displacement sensors extension.
Preferably, institute's displacement sensors extension runs through described reaction magnetic ring, and stretches in the blind hole of described variable bar
Portion.
Preferably, institute's displacement sensors is magnetostrictive displacement sensor.
Compared with prior art, the beneficial effects of the utility model are:
The displacement detector that the utility model proposes is that magnetostrictive displacement detects device, is contactless by inside
Observation and control technology accurately detect the absolute position of reaction magnetic ring to measure the actual displacement value of detected product, it is possible to increase
Variable bar displacement detecting precision, and belong to non-contact displacement detection device, can apply in most evil bad industrial environment, no
It is vulnerable to oil stain, solution, dust or other impact polluted, thus improves the control accuracy of control system, specific as follows:
1, this utility model is due to nothing directly contact between institute's displacement sensors and reaction magnetic ring, and long-time use is the most not
Loss can be produced, substantially increase the service life of displacement detector.
2, this utility model accurately measures reaction magnetic ring actual displacement by displacement transducer, and then obtains the reality of variable bar
Border displacement, improves the displacement measurement accuracy of variable bar, thus improves the control accuracy of control system.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional stroking mechanism displacement detector；
Fig. 2 is the structural representation of this utility model stroking mechanism displacement detector.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with the accompanying drawings with excellent
The utility model is described in further detail to select embodiment.
As in figure 2 it is shown, a kind of stroking mechanism displacement detector, it is exclusively used in variable pump, including displacement transducer 1, side cover
2, variable bar 3 and reaction magnetic ring 4, it is internal that institute's displacement sensors part stretches into variable bar 3, and described reaction magnetic ring 4 embeds institute
State variable bar 3 internal.
Institute's displacement sensors 1 is magnetostrictive displacement sensor, is used for measuring displacement transducer 1 and described sensing magnetic
Displacement data between ring 4, and by measurement to displacement data be sent to the control system of variable pump, control system is according to measurement
To displacement data send corresponding instruction, therefore, the control accuracy of control system and institute displacement sensors 1 measure the position arrived
Shifting data precision is closely related.Further, institute's displacement sensors 1 also includes displacement transducer extension 11, described in be positioned at
Sensor extension 11 is in column structure.
Described side cover 2 is connected with described variable bar 3, is used for protecting variable bar and displacement detector 1.
One end of described variable bar 3 is provided with blind hole 31, is used for accommodating displacement transducer extension 11, described blind hole 31 in
Column, its internal diameter is more than described displacement sensing more than the external diameter of institute's displacement sensors extension 11, the length of described blind hole 31
The length of device extension 11, does back and forth movement along institute's displacement sensors extension 11 when described variable bar 3 works.
Described reaction magnetic ring 4 in the form of a ring and embeds on described variable bar 3 on the inwall of blind hole 31, when described variable bar 3 does
During back and forth movement, described reaction magnetic ring 4 is followed described variable bar 3 and is done back and forth movement together.Further, described reaction magnetic ring 4
Internal diameter more than the external diameter of institute's displacement sensors extension 11.After described stroking mechanism displacement detector installation, institute
Displacement sensors extension 11 runs through described reaction magnetic ring 4, and the blind hole 31 stretching into described variable bar is internal, and due to described
The internal diameter of reaction magnetic ring 4 and the internal diameter of described blind hole 31 are all higher than the external diameter of institute's displacement sensors extension 11, therefore institute's rheme
Without directly contacting between displacement sensor extension 11 with described reaction magnetic ring 4.
The operation principle of the stroking mechanism displacement detector that this utility model provides is as follows: when described variable bar is along institute
When displacement sensors extension does back and forth movement, the reaction magnetic ring of the blind hole inwall embedding described variable bar follows described variable
Bar does back and forth movement, the invariant position of institute's displacement sensors extension together, and the most described reaction magnetic ring passes along described displacement
Sensor extension does back and forth movement, and institute's displacement sensors extension changes with the position of described reaction magnetic ring, thus produces
Give birth to strain-pulse signal to be received by institute's displacement sensors, after displacement transducer receives strain-pulse signal, be sent to become
The control system of amount pump, control system sends corresponding control instruction according to the signal that displacement transducer transmits.
This utility model is due to nothing directly contact between institute's displacement sensors and reaction magnetic ring, and long-time use also will not
Producing loss, substantially increase the service life of displacement detector, further, it accurately measures sense by displacement transducer
Answer magnet ring actual displacement, and then obtain the actual displacement of variable bar, improve the displacement measurement accuracy of variable bar, thus improve
The control accuracy of control system.
Compared with prior art, the beneficial effects of the utility model are:
1, this utility model is due to nothing directly contact between institute's displacement sensors and reaction magnetic ring, and long-time use is the most not
Loss can be produced, substantially increase the service life of displacement detector.
2, this utility model accurately measures reaction magnetic ring actual displacement by displacement transducer, and then obtains the reality of variable bar
Border displacement, improves the displacement measurement accuracy of variable bar, thus improves the control accuracy of control system.
The above is preferred implementation of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve and profit
Decorations are also considered as protection domain of the present utility model.
Claims (7)
1. a stroking mechanism displacement detector, is exclusively used in variable pump, it is characterised in that includes displacement transducer, side cover, becomes
Gauge rod and reaction magnetic ring, institute's displacement sensors part stretches into inside variable bar, and described reaction magnetic ring embeds described variable bar
Inside, described side cover is connected with described variable bar.
Stroking mechanism displacement detector the most according to claim 1, it is characterised in that institute's displacement sensors includes position
Displacement sensor extension, institute's displacement sensors extension is column.
Stroking mechanism displacement detector the most according to claim 2, it is characterised in that one end of described variable bar is arranged
Having blind hole, described blind hole is column.
Stroking mechanism displacement detector the most according to claim 3, it is characterised in that the internal diameter of described blind hole is more than institute
The external diameter of displacement sensors extension, the length of described blind hole is more than the length of institute's displacement sensors extension.
Stroking mechanism displacement detector the most according to claim 3, it is characterised in that described reaction magnetic ring is the most also
Embedding on the inwall of described variable bar blind hole, the internal diameter of described reaction magnetic ring is more than the external diameter of institute's displacement sensors extension.
Stroking mechanism displacement detector the most according to claim 3, it is characterised in that institute's displacement sensors extension
Run through described reaction magnetic ring, and stretch into inside the blind hole of described variable bar.
Stroking mechanism displacement detector the most according to claim 1, it is characterised in that institute's displacement sensors is mangneto
Telescopic displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543757.XU CN205679186U (en) | 2016-06-07 | 2016-06-07 | A kind of stroking mechanism displacement detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543757.XU CN205679186U (en) | 2016-06-07 | 2016-06-07 | A kind of stroking mechanism displacement detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205679186U true CN205679186U (en) | 2016-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620543757.XU Active CN205679186U (en) | 2016-06-07 | 2016-06-07 | A kind of stroking mechanism displacement detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205679186U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756784A (en) * | 2018-07-05 | 2018-11-06 | 江苏诚创智能装备有限公司 | A kind of iron roughneck drill linear movement pick-up centralising device |
-
2016
- 2016-06-07 CN CN201620543757.XU patent/CN205679186U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756784A (en) * | 2018-07-05 | 2018-11-06 | 江苏诚创智能装备有限公司 | A kind of iron roughneck drill linear movement pick-up centralising device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |