CN109000835A - A kind of dynamic difference formula torque sensor - Google Patents
A kind of dynamic difference formula torque sensor Download PDFInfo
- Publication number
- CN109000835A CN109000835A CN201811095696.5A CN201811095696A CN109000835A CN 109000835 A CN109000835 A CN 109000835A CN 201811095696 A CN201811095696 A CN 201811095696A CN 109000835 A CN109000835 A CN 109000835A
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- China
- Prior art keywords
- shell
- shaft
- torque sensor
- difference formula
- sets
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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
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention provides a kind of dynamic difference formula torque sensors, including are fixedly connected on the intracorporal sets of stator coils of shell, and are rotatably connected on the intracorporal rotor set of shell, and rotor set center wears and be fixed with shaft and housing tip is extended in one end of shaft；Shaft is stretched out shell one end and is connect with measured piece, the resetting apparatus of shaft after other end connecting detection.Primary coil group 41, and the first grade coil group 42 and second subprime coil group 43 that concatenate by potential reverse phase are wound in sets of stator coils.Rotor rotation direction is different, and the direction of the electromotive force generated is different, and the absolute value of electromotive force and the rotational angle of shaft are positively correlated.And then the size of torque can have both been tested, the direction of the torque can also be tested.
Description
Technical field
The invention belongs to sensor technical fields, and in particular to a kind of dynamic difference formula torque sensor.
Background technique
Torque sensor is divided into dynamic and static two major classes, wherein dynamic torque sensor can be called again torque sensor,
Torque rotary speed sensor, rotary torque sensor etc..Torque sensor be to it is various rotation or non-rotary mechanical component on to torsion
The detection of torque perception.The physical change of torsion is converted into accurate electric signal by torque sensor.Torque sensor can be with
It applies in manufacture viscosimeter, electronic (pneumatic, fluid power) torque spanner.Existing torque sensor, in the same of test dynamic torque
Shi Buneng surveys rotation amount angular displacement.Existing dynamic torque sensor is divided into two kinds, and one kind is that phase-difference type dynamic torque passes
Sensor, for another kind to answer chip dynamic torque sensor, both sensors cannot survey rotation while testing dynamic torque
Amount angular displacement.
Summary of the invention
In order to solve the problems, such as exist under the prior art, by further improvement of existing technologies, the present invention provides
A kind of dynamic difference formula torque sensor can also test rotation amount angular displacement while realizing test dynamic torque.
Foregoing invention purpose that the invention is realized by the following technical scheme.
A kind of dynamic difference formula torque sensor, including shell, shell is interior to be equipped with rotor set, and rotor set includes rotor armature
And shaft, one end that rotor armature center is equipped with shaft and shaft prolong shell axis direction and extend housing tip, rotor rank
Iron is fixedly connected with shaft, and shaft is rotatably connected in shell；Sets of stator coils, stator coil assembling are arranged on rotor armature
With being connected in shell；Primary coil group, and the first secondary coil concatenated by potential reverse phase are wound in sets of stator coils
Group and second subprime coil group.
Further, the other end of shaft is connected with for the resetting apparatus after shaft rotation；Resetting apparatus includes being arranged
Cam in shaft, cam are fixedly connected in shaft；The bottom end of cam, which is connected together, concave wheel, and concave wheel is slidably connected at shell
In vivo；The bottom end of shell is removably connected with mounting base, between mounting base and concave wheel be equipped with driving concave wheel in shell on
The elastic component of lower slider.
Further, the cam side opposite with concave wheel be equipped with several protrusions, offered in concave wheel with it is described several convex
Play compatible groove.
Further, the side of concave wheel is equipped with sliding block, and inner walls are equipped with sliding slot compatible with sliding block.
Further, side opposite with elastic component in concave wheel offers limiting slot, and elastic component one end and mounting base are solid
Fixed connection, the other end are against in limiting slot.
Further, elastic component is pre-compressed spring.
Further, pressing device is set between sets of stator coils and cam, and pressing device presses sets of stator coils
It fastens.
Further, pressing device includes the pressing sleeve being fixed to sets of stator coils, and pressing sleeve is fixed and is filled
The intracorporal retainer plate of shell is fitted over, retainer plate is fixedly connected in shell.
Further, retainer plate and inner walls are threadably secured connection.
Further, shell one end is fixedly connected with first bearing component, and pressing sleeve center is fixedly connected with second bearing group
Part；Shaft is rotatablely connected in shell by first bearing component and second bearing component.
Compared with prior art, the present invention at least has the advantages that
Primary coil, and the two groups of secondary coil groups concatenated by potential reverse phase are wound in sets of stator coils.Into
When row measurement torque, the indirect current on primary coil can generate corresponding electromotive force when rotating rotor on the secondary winding,
The direction of rotor rotation is different, and the direction of the electromotive force of output is different, thus judges the direction of the torque；Output is electronic simultaneously
The absolute value of gesture and the ratio of corner are linear.Thus judge the size of torque.And then it realizes in test dynamic torque
While, rotation amount angular displacement can also be tested.
Detailed description of the invention
Fig. 1 is overall schematic of the invention；
Fig. 2 is the winding schematic diagram of primary coil of the present invention and secondary coil；
Fig. 3 is the structural schematic diagram of cam of the present invention；
Fig. 4 is the structural schematic diagram of concave wheel of the present invention；
Fig. 5 is assembling schematic diagram of the invention.
In figure: 1- shell, 2- shaft, 21- first bearing component, 22- second bearing component, 3- rotor set, 4- stator line
Circle group, 5- pressing sleeve, 6- retainer plate, 7- cam, 71- protrusion, 8- concave wheel, 81- groove, 82- limiting slot, 83- sliding block, 9- elasticity
Part, 10- mounting base, 11- mounting flange.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or
It is more than two.
The present invention is specifically described with reference to the accompanying drawing:
As shown in Figure 1, the present invention includes shell 1, rotor set 3 is equipped in shell 1, rotor set 3 includes 31 He of rotor armature
Shaft 2, one end that 31 center of rotor armature is equipped with shaft 2 and shaft 2 prolong shell axis direction and extend 1 top of shell, turn
Sub- armature 31 is fixedly connected with shaft 2, and shaft 2 is rotatably connected in shell 1；Sets of stator coils 4 is arranged on rotor armature 31,
4 assembly connection of sets of stator coils is in shell 1；
As shown in Fig. 2, being wound with primary coil group 41 in sets of stator coils 4, and the first time concatenated by potential reverse phase
Grade coil group 42 and second subprime coil group 43.
To above-mentioned it should be noted that shaft 2 and rotor armature 31 are attached in such a way that crimping is fixed, shaft 2
Both ends be rotatablely connected in shell 1 by first bearing component 21 and second bearing component 22；Stator is arranged on rotor armature 31
The axis of coil group 4, and gap setting between rotor armature 31 and sets of stator coils 4, rotor set 3 and sets of stator coils 4 is overlapped；
One end that shaft 2 extends shell 1 is connect with measured piece, when measured piece is rotated, is driven rotor armature 31 to rotate, is made to twine
Two groups of secondary coils for being wound on sets of stator coils 4 generate different electromotive force, and then export corresponding electromotive force, to judge to turn round
The size and Orientation of square.
The winding of 41, first grade coil groups 42 of above-mentioned primary coil group and second subprime coil group 43 is needed to illustrate
Being includes four iron cores in sets of stator coils 4, and the corresponding coil group of input voltage Ui is primary coil group 41, is successively twined
It is wound on this four iron cores；The first grade coil group 42 and second subprime coil group of the corresponding reverse phase concatenation of output voltage Uo
43.First grade coil group 42 is wrapped on two adjacent iron cores, and it is adjacent that second subprime coil group 43 is wrapped in other two
Iron core on；Through-hole, the first grade coil group 42 and second subprime line of primary coil group 41 and concatenation are offered on shell 1
Circle group 43 passes through the through-hole for electromotive force variation letter caused by magnetic field flux variation when rotor group respectively by conducting wire
Number output.
To it is above-mentioned it should be noted that when primary coil add certain sinusoidal voltage Ui after, in the first secondary wire
Induced potential e1, e2 are generated respectively in circle group 42 and second subprime coil group 43.When rotor set 3 is at middle position, for the first time
Grade coil group 42 is identical with 43 mutual inductance of second subprime coil group, induced potential e1=e2, output voltage zero.When rotor set 3 from
When zero-bit rotates (clockwise) to side, mutual inductance S1 increases in first grade coil group 42 clockwise, counterclockwise side
Mutual inductance S2 reduces in upward second subprime coil group 43, induced potential e1 > e2, and output voltage Uo=e1-e2 is not zero, and
In the range of sensor, rotational angle is bigger, and output voltage difference is bigger.When rotor set 3 is (inverse from the reversed side rotation of zero-bit
Hour hands) when, mutual inductance S2 increases in the second subprime coil group 43 in counter clockwise direction, mutual inductance S1 in first grade coil group 42
Reduce, induced potential e2 > e1, output voltage Uo is still not zero.The difference of two channel output voltages in defined stroke range
It is linear with the ratio of corner.Rotor clockwise rotates and rotates counterclockwise the voltage direction of output on the contrary, thus judging
The direction of the torque.
Further, by adjusting the circle of 41, first grade coil groups 42 and second subprime coil group 43 of primary coil group
Number and the gap between sets of stator coils 4 and rotor set 3 can adjust the voltage output and sensitivity of product.
Further, as shown in Figure 1, the other end of shaft 2 is connected with the resetting apparatus after rotating for shaft 2；It resets
Device includes the cam 7 being set in shaft 2, and cam 7 is fixedly connected in shaft 2；The bottom end of cam 7 be connected together have it is recessed
Wheel 8, concave wheel 8 is slidably connected in shell 1；The bottom end of shell 1 is removably connected with mounting base 10, mounting base 10 and concave wheel
The elastic component 9 that driving concave wheel 8 slides up and down in shell 1 is equipped between 8.
To above-mentioned it should be noted that as shown in Figure 3 and Figure 4, the side opposite with concave wheel 8 of cam 7 is equipped with several protrusions
71, it is offered in concave wheel 8 and several raised 71 compatible grooves 81.
To above-mentioned it should be further noted that needing to carry out shaft 2 rotation makes after to the test completion of measured piece
Rotor set 3 resets, in case next time uses；Therefore it is just required to the resetting apparatus for resetting shaft 2, cam 7 and shaft 2 pass through
Keyway is fixedly connected, and the rotation of shaft 2 band moving cam 7 rotates when testing, and concave wheel 8 is slidably connected at 1 inner wall of shell, makes
Concave wheel 8 does not rotate in shell 1, and the protrusion 71 on cam 7 squeezes concave wheel 8 at this time, and then squeezes elastic component 9,
Torque is bigger, and extruding degree is bigger；After completing test, under the action of elastic component 9, concave wheel 8 carries out movement and squeezes 7 turns of cam
It is dynamic to be resetted.
Above-mentioned needs are further walked with explanation is, the quantity of protrusion 71 is no less than two on cam 7, but when protrusion 71
Number is more, also means that the application maximum angle that can be detected will be smaller, thus the protrusion 71 on cam 7 is preferred
It is corresponding using two protrusions 71, setting and raised 71 one-to-one grooves 81 in concave wheel 8.
As shown in figure 4, further optimizing to above-mentioned technical characteristic, the side of concave wheel 8 is equipped with sliding block 83,1 inner wall of shell
Equipped with sliding slot compatible with sliding block 83.
To above-mentioned it should be noted that the sliding block 83 that the side of concave wheel 8 is arranged, stablize concave wheel 8 can inside shell 1
Be slidably connected, without occur concave wheel 8 rotate generation, avoid because concave wheel 8 rotation influence measured piece torque it is true
Value.
As shown in figure 4, further, the side opposite with elastic component 9 offers limiting slot 82, elastic component 9 one in concave wheel 8
End is fixedly connected with mounting base 10, and the other end is against in limiting slot 82.
To above-mentioned it should be noted that elastic component 9 is limited between mounting base 10 and limiting slot 82, make elastic component 9
Lateral offset does not occur for elastic component when compressed, and elastic component 9 after test can be made to have enough elastic force to make concave wheel 8 and cam
7 are resetted.Its elastic component 9 can be fixed with mounting seat, can also be not fixed with mounting seat, preferably make to pacify
Dress pedestal and elastic component 9 are fixed.
To above-mentioned elastic component 9 it should be noted that the preferred pre-compressed spring of elastic component 9.
As shown in Figure 1, it is further, pressing device is set between sets of stator coils 4 and cam 7, and pressing device is to stator
Coil group 4 is fixed.
Specifically, pressing device includes the pressing sleeve 5 being fixed to sets of stator coils 4, and pressing sleeve 5 is fixed
The retainer plate 6 being assemblied in shell 1, retainer plate 6 are fixedly connected in shell 1.
To above-mentioned needs, what is, squeezes sets of stator coils 4 by pressing sleeve 5, then pass through retainer plate to sets of stator coils 4
6 are fixed, and retainer plate 6 is threaded in 1 inner wall of shell.On the one hand sets of stator coils 4 can be made effective in shell 1
It is fixed, avoid sets of stator coils 4 from loosening；On the other hand, make the application in maintenance, be beneficial to tearing open for sets of stator coils 4
It unloads.
As shown in figure 5, assembling process of the invention is as follows:
(1) sets of stator coils 4 is packed into shell, by turn equipped with first bearing component 21 and second bearing component 22
Subgroup 3 is packed into shell.
(2) sets of stator coils 4 is fixed with pressing sleeve 5 with shell, pressing sleeve 5 is fixed with shell using retainer plate 6, is successively filled
It is made into an entirety.
(3) cam 7 is packed into the shaft 2 of rotor set 3 by keyway again, composition rigid connection；By concave wheel 8 and precompressed bullet
Spring is packed into shell 1.Pre-compressed spring is fixedly connected on mounting base 10, mounting base 10, on shell 1.
(4) mounting flange on shell 1 and measured piece rigidly fix, and rotor set 3 stretches out one end of shell 1 and measured piece connects
It connects, is detected.
The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute
For the those of ordinary skill in category field, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this or change
It is dynamic to be still in the protection scope of this invention.
Claims (10)
1. a kind of dynamic difference formula torque sensor, which is characterized in that including shell (1), rotor set (3) are equipped in shell (1),
Rotor set (3) includes rotor armature (31) and shaft (2), and rotor armature (31) center is equipped with the one of shaft (2) and shaft (2)
End prolongs shell axis direction and extends shell (1) top, and rotor armature (31) is fixedly connected with shaft (2), and shaft (2) rotation connects
It connects in shell (1)；It is arranged on rotor armature (31) sets of stator coils (4), sets of stator coils (4) assembly connection is in shell
(1) in；
It is wound with primary coil group (41) in the sets of stator coils (4), and first grade concatenated by electromotive force reverse phase
Coil group (42) and second subprime coil group (43).
2. a kind of dynamic difference formula torque sensor according to claim 1, which is characterized in that the shaft (2)
The other end is connected with for the resetting apparatus after shaft (2) rotation；Resetting apparatus includes the cam (7) being set on shaft (2),
Cam (7) is fixedly connected on shaft (2)；The bottom end of cam (7), which is connected together, to be had concave wheel (8), and concave wheel (8) is slidably connected at shell
In body (1)；The bottom end of shell (1) is removably connected with mounting base (10), is equipped with and is driven between mounting base (10) and concave wheel (8)
The elastic component (9) that dynamic concave wheel (8) slide up and down in shell (1).
3. a kind of dynamic difference formula torque sensor according to claim 2, which is characterized in that the cam (7) with
The opposite side of concave wheel (8) is equipped with several raised (71), offers on concave wheel (8) compatible with several raised (71)
Groove (81).
4. a kind of dynamic difference formula torque sensor according to claim 2, which is characterized in that the concave wheel (8)
Side is equipped with sliding block (83), and shell (1) inner wall is equipped with sliding block (83) compatible sliding slot.
5. a kind of dynamic difference formula torque sensor according to claim 3, which is characterized in that in the concave wheel (8)
Opposite side offers limiting slot (82) with elastic component (9), and elastic component (9) one end is fixedly connected with mounting base (10), separately
One end is against in limiting slot (82).
6. a kind of dynamic difference formula torque sensor according to claim 5, which is characterized in that the elastic component (9)
Using pre-compressed spring.
7. a kind of dynamic difference formula torque sensor according to claim 1, which is characterized in that the sets of stator coils
(4) pressing device is set between cam (7), and pressing device is fixed sets of stator coils (4).
8. a kind of dynamic difference formula torque sensor according to claim 7, which is characterized in that the pressing device packet
The pressing sleeve (5) being fixed to sets of stator coils (4) is included, and pressing sleeve (5) is securely fitted in the fixation in shell (1)
It encloses (6), retainer plate (6) is fixedly connected in shell (1).
9. a kind of dynamic difference formula torque sensor according to claim 8, which is characterized in that the retainer plate (6)
Connection is threadably secured with shell (1) inner wall.
10. a kind of dynamic difference formula torque sensor according to claim 2, which is characterized in that the shell (1) one
End is fixedly connected with first bearing component (21), and pressing sleeve (5) center is fixedly connected with second bearing component (22)；The shaft
(2) by first bearing component (21) and second bearing component (22) rotation connection shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811095696.5A CN109000835B (en) | 2018-09-19 | 2018-09-19 | Dynamic differential torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811095696.5A CN109000835B (en) | 2018-09-19 | 2018-09-19 | Dynamic differential torque sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109000835A true CN109000835A (en) | 2018-12-14 |
| CN109000835B CN109000835B (en) | 2020-09-11 |
Family
ID=64591760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811095696.5A Active CN109000835B (en) | 2018-09-19 | 2018-09-19 | Dynamic differential torque sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109000835B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115371863A (en) * | 2022-07-28 | 2022-11-22 | 北京吾天科技有限公司 | Torque testing device |
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| Publication number | Publication date |
|---|---|
| CN109000835B (en) | 2020-09-11 |
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