CN108593164A - A kind of torque sensing device assembly and the method for measuring torque - Google Patents
A kind of torque sensing device assembly and the method for measuring torque Download PDFInfo
- Publication number
- CN108593164A CN108593164A CN201810611628.3A CN201810611628A CN108593164A CN 108593164 A CN108593164 A CN 108593164A CN 201810611628 A CN201810611628 A CN 201810611628A CN 108593164 A CN108593164 A CN 108593164A
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- torque
- mounting hole
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- axis
- gear shaft
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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
- G01L3/108—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving resistance strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to a kind of torque sensors, more particularly to a kind of torque sensing device assembly and the method for measuring torque, including torque sensor and fixing piece, torque for measuring the gear shaft for being located at output end of reducer, the free end of gear shaft offers mounting hole along axis direction, and torque sensor and fixing piece are located in mounting hole, and torque sensor includes torsional axis and foil gauge, foil gauge is tightly attached to the surface of torsional axis, and torsional axis is fixed on by fixing piece in mounting hole.The present invention is by the way that torque sensor to be placed in the mounting hole of gear shaft, achieve the effect that save installation space, it realizes in the output end of reducer installed torque sensor to small space, directly to measure gear shaft torque, to improve the accuracy of measurement；Also achieve the effect that measure gear shaft large torque by the torque sensor of small-range simultaneously.
Description
Technical field
The present invention relates to a kind of torque sensor, more particularly to a kind of torque sensing device assembly and the method for measuring torque.
Background technology
Torque sensor is widely used in the occasion of various torque detections in industry.At sea on hoistable platform, lifting is flat
Platform is supported on the support column that three are vertically arranged, and rack is provided on support column, and multiple promotion teeth are provided on hoistable platform
Wheel is engaged with the rack on support column, and 18-24 promotion gear is engaged on general each rack, passes through multiple promotion gears
It rotates synchronously and hoistable platform is driven to be lifted along support column.Since the dead weight of offshore jackup platform itself is very big, therefore it is required that often
A load for promoting gear is substantially uniform, if the load if promoting gear is uneven, loads larger promotion gear shaft and exists
It is higher by other promotion gear shaft degree of fatigues can be compared under force effect for a long time, it is susceptible to fracture.Once the promotion of certain side
Gear axle fracture can cause other promotion gear shaft stress of the side to increase, gently then lead to platform inclination, seriously result even in
Platform avalanche.
In the prior art, torque sensor is set to the input torque of measurement speed reducer between motor and speed reducer, or
Be set to speed reducer and load between measure speed reducer output torque, existing torque sensor generally by shaft coupling with
Motor and speed reducer is connected, or is connected with speed reducer and load by shaft coupling.The promotion gear of offshore jackup platform
Driving structure includes motor, speed reducer and promotes gear, and the sensor is measured promotion tooth applied to offshore jackup platform
When the torque of wheel shaft, since the volume that above-mentioned torque sensor occupies is larger, and speed reducer and promotion on offshore jackup platform
Space between gear is smaller, it is difficult to which directly measurement subtracts between above-mentioned torque sensor is mounted on speed reducer and promotes gear
Fast machine output shaft torque（Promote the torque of gear shaft）, therefore torque sensor can only be installed between motor and retarder
It measures the input shaft torque of speed reducer, the output shaft torque of speed reducer is obtained using conversion.Again due to being deposited inside speed reducer
In resistance and loss, and the resistance of each speed reducer and loss are all different, and when same speed reducer is with using
Between increase resistance and loss can also change, therefore measure and carry out conversion again after speed reducer input shaft torque and obtain deceleration
The numerical value of machine output shaft torque cannot accurately reflect each torque for promoting gear shaft, also will appear promotion when using for a long time
The problem of gear axle load unevenness, and this problem is difficult to directly by the torque sensor being arranged between speed reducer and motor
It is reversed to mirror.
Invention content
The object of the present invention is to provide a kind of torque sensing device assembly and the methods for measuring torque, solve in the prior art
It measures speed reducer input shaft torque to convert again the problem that output shaft torque error is larger when obtaining speed reducer output shaft torque, reach
Reduce the effect of output shaft torque measurement error.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of torque sensing device assembly, including torque sensor and fixing piece, for measuring the gear positioned at output end of reducer
The free end of the torque of axis, gear shaft offers mounting hole along axis direction, and torque sensor and fixing piece are located in mounting hole,
Torque sensor includes torsional axis and foil gauge, and foil gauge is tightly attached to the surface of torsional axis, and torsional axis is fixed on by fixing piece
In mounting hole.
By using above-mentioned technical proposal, torque sensor is located in the mounting hole of gear shaft, shared by torque sensor
Small volume, and can be concealed be mounted in gear shaft, when gear shaft stress reverse, led to by the deformation of gear shaft
It crosses fixing piece and is transferred to torsional axis, deformed so as to cause foil gauge, resistance changes after foil gauge deformation, and passes through foil gauge
Deformation can measure the torque of torsional axis, the torque of gear shaft can be accessed after conversion, the conversion process of torque is only
It is related to the gear shaft of output end of reducer, it is unrelated with the resistance of speed reducer and loss, therefore significantly increase the accuracy of measurement.
Preferably, torsional axis is coaxially disposed with gear shaft.
By using above-mentioned technical proposal, torsional axis can be rotated synchronously with gear shaft, ensure the accuracy measured.
Preferably, fixing piece includes two groups of neck bush, external bushings of coaxial arrangement and tightens part, the madial wall point of neck bush
It is not set in the both ends of torsional axis, the lateral wall of external bushing is plugged in mounting hole；The diameter of neck bush peripheral surface is along axis side
Upward first increases and then decreases, forms the first inclined-plane and the second inclined-plane, the diameter of external bushing inner peripheral surface in the axial direction on first reduce
After increase, form third inclined-plane and the 4th inclined-plane, the first inclined-plane and third are oblique when torque sensing device assembly is in installation condition
Face is opposite；Part is tightened between external bushing and neck bush, includes the contact piece and turnbuckle of two panels annular, two panels abuts
Piece is abutted with the first inclined-plane and third inclined-plane and the second inclined-plane and the 4th inclined-plane respectively, and turnbuckle is evenly arranged in contact piece
On, and turnbuckle is threadedly coupled across side contact piece with other side contact piece.
By using above-mentioned technical proposal, torsional axis is inserted into the inner peripheral surface of neck bush first, later by two contact pieces
The both sides of neck bush and external bushing are respectively placed in, and tentatively tightening turnbuckle makes external bushing without departing from contact piece, later
External bushing is inserted into mounting hole, until torsional axis is located at suitable position, turnbuckle is finally tightened, in the effect of turnbuckle
Lower two contact pieces are adjacent to each other, and by the withstanding effect of contact piece and the first inclined-plane to the 4th inclined-plane, contact piece is by external bushing
It pushes against to mounting hole madial wall and pushes against neck bush to torsional axis, ensure the deflection energy when gear shaft twists deformation
Torsional axis is enough transferred to by external bushing, contact piece and neck bush, torsional axis is made to twist deformation.
Preferably, passing through key connecting between neck bush and torsional axis and between external bushing and mounting hole.
By using above-mentioned technical proposal, can prevent between external bushing and mounting hole and between neck bush and torsional axis
Sliding is generated in torsion, band when ensureing to drive external bushing torsional deflection and neck bush torsional deflection when gear shaft torsional deflection
Dynamic torsional axis torsional deflection.
Preferably, the peripheral surface of neck bush and the inner peripheral surface of external bushing are provided in the axial direction with several torsion slots, contact piece
Peripheral surface and inner peripheral surface on be wholely set with torsion slot cooperation auxiliary section.
By using above-mentioned technical proposal, contact piece and neck bush and outer lining can be prevented by reversing the cooperation of slot and auxiliary section
It is slided in torsional deflection between set, ensure that external bushing and the torsional deflection of contact piece and contact piece and neck bush pass
Pass ability.
A method of torque is measured, is included the following steps： S1：The end face upper edge axis of axis is measured where measured place
Direction opens up mounting hole； S2：Torque sensor is mounted on by fixing piece in mounting hole, ensures the torsion of torque sensor
Axis is coaxial with mounting hole； S3：The torque that torque sensor is measured is at the torque for measuring axis.
By using above-mentioned technical proposal, torque sensor is placed in the mounting hole for measuring axis, can be saved a large amount of
Installation space, when measurement axis twists deformation, torsional deflection can be transferred to the torsion of torque sensor by fixing piece
The large torque for measuring axis can be converted into the small torque of torsional axis by axis in this way, measured and tied according to the torque sensor of small-range
Fruit carries out conversion and obtains the large torque numerical value for measuring axis.
In conclusion the present invention has the following technical effects：
1. by the way that torque sensor to be placed in the mounting hole of gear shaft, achieved the effect that save installation space, realize by
Torque sensor is installed in the output end of reducer to small space, directly to measure gear shaft torque, is surveyed to improve
The accuracy of amount；Also achieve the effect that measure gear shaft large torque by the torque sensor of small-range simultaneously；
2. auxiliary section in the key connecting and contact piece that pass through the key connecting of mounting hole and external bushing, neck bush and torsional axis with
The cooperation of torsion slot on external bushing and neck bush, has reached the effect stablized and the torsional deflection of gear shaft is transferred to torsional axis
Fruit.
Description of the drawings
Fig. 1 is the cross-sectional view of the present invention；
Fig. 2 is enlarged drawing at local A in Fig. 1；
Fig. 3 is the configuration schematic diagram of fixing piece.
In figure, 1, torque sensor；11, torsional axis；12, foil gauge；2, fixing piece；21, neck bush；211, first tiltedly
Face；212, the second inclined-plane；221, third inclined-plane；222, the 4th inclined-plane；22, external bushing；23, part is tightened；231, contact piece；
2311, auxiliary section；232, turnbuckle；24, slot is reversed；3, gear shaft；31, mounting hole.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.The identical reference numeral of wherein identical parts
It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper", "lower", " bottom surface " and
" top surface " refers to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from geometric center of specific component
Direction.
Embodiment one：
As shown in Figure 1, a kind of torque sensing device assembly, the torsion for measuring the gear shaft 3 for promoting gear on offshore jackup platform
Square is located at the output end of speed reducer.The torque sensing device assembly includes torque sensor 1 and fixing piece 2, gear shaft 3 from
Mounting hole 31 is offered along axis direction by holding, torque sensor 1 and fixing piece 2 are located in mounting hole 31, and torque sensing
Device 1 is fixed on by fixing piece 2 in mounting hole 31.When gear shaft 3 twists deformation due to load, the torsion of gear shaft 3
Deformation can be transferred to torque sensor 1 by fixing piece 2, so that torque sensor 1 generates torque reading.Due to torque
Sensor 1 and fixing piece 2 are located in the mounting hole 31 of gear shaft 3, therefore can save a large amount of installation space so that by torque
The output end that sensor 1 can be set to speed reducer directly measures the torque of output end of reducer, simultaneously because torque sensor 1
Torsion degree compare gear shaft 3 torsion degree it is smaller, therefore torque sensor 1 select small-range torque sensor, warp
Cross the actual torque that gear shaft 3 is obtained after converting.
As shown in Figure 1, torque sensor 1 includes torsional axis 11 and foil gauge 12, strained when torsional axis 11 is hollow shaft
Piece 12 can be covered on the inner peripheral surface or peripheral surface of torsional axis 11, and when torsional axis 11 is solid shafting, foil gauge 12 is covered in
On the peripheral surface of torsional axis 11, when torsional axis 11 is installed in mounting hole 31, torsional axis 11 and mounting hole 31 are coaxial.
As shown in Fig. 2, fixing piece 2 includes two groups of neck bush 21 being coaxially disposed, external bushing 22 and tightens part 23, neck bush
21 madial wall is respectively sleeved at the both ends of torsional axis 11, and the lateral wall of external bushing 22 is plugged in mounting hole 31；Neck bush 21
The diameter of peripheral surface upper first increases and then decreases in the axial direction, forms the first inclined-plane 211 and the second inclined-plane 212, in external bushing 22
The diameter of circumferential surface in the axial direction on first reduce and increase afterwards, third inclined-plane 221 and the 4th inclined-plane 222 are formed, in torque sensor
The first inclined-plane 211 is opposite with third inclined-plane 221 when component is in installation condition；It tightens part 23 and is located at external bushing 22 and neck bush 21
Between, include the contact piece 231 and turnbuckle 232 of two panels annular, two panels contact piece 231 respectively with the first inclined-plane 211 and
Third inclined-plane 221 and the second inclined-plane 212 and the 4th inclined-plane 222 abut, and turnbuckle 232 is evenly arranged in contact piece 231,
And turnbuckle 232 is threadedly coupled across side contact piece 231 with other side contact piece 231.
The step of 2 even twisting moment sensor 1 of fixing piece is：Torsional axis 11 is inserted into the inner peripheral surface of neck bush 21 first, it
Two contact pieces 231 are respectively placed in the both sides of neck bush 21 and external bushing 22 afterwards, and tentatively tighten turnbuckle 232 to make outside
External bushing 22 is inserted into mounting hole 31 by bushing 22 later without departing from contact piece 231, until torsional axis 11 is located at suitable position
It sets, finally tightens turnbuckle 232, two contact pieces 231 are adjacent to each other under the action of turnbuckle 232, pass through contact piece
231 and 211 to the 4th inclined-plane 222 of the first inclined-plane withstanding effect, contact piece 231 pushes against external bushing 22 to the inside of mounting hole 31
Wall and neck bush 21 is pushed against to torsional axis 31, ensures that deflection can pass through outer lining when gear shaft 3 twists deformation
Set 22, contact piece 231 and neck bush 21 are transferred to torsional axis 11, and torsional axis 11 is made to twist deformation.
In addition, in conjunction with shown in Fig. 2, when gear shaft 3 twists deformation, between gear shaft 3 and external bushing 22, external bushing
Between 22 and contact piece 231, between contact piece 231 and neck bush 21 and may be along torsion between neck bush 21 and torsional axis 11
Turn direction and opposite sliding occurs, the torsional deflection amount of such gear shaft 3 cannot fully be transferred to torsional axis 11, cause according to torsion
The torque value for the gear shaft 3 that the measured value of square sensor 1 converts can have error, and the error is uncontrollable.In order to improve
The measurement accuracy of torque sensing device assembly will then ensure that the torsional deflection amount of gear shaft 3 can be as much as possible to torsional axis 11
Transmit, it is therefore necessary to reduce between gear shaft 3 and external bushing 22, between external bushing 22 and contact piece 231, contact piece 231 with
It is slided between neck bush 21 and along the opposite of torsional direction between neck bush 21 and torsional axis 11.
By key connecting between neck bush 21 and torsional axis 11 and between external bushing 22 and mounting hole 31, can lead in this way
Key connecting is crossed to be effectively prevented between neck bush 21 and torsional axis 11 and between external bushing 22 and mounting hole 31 in torsional direction
Upper generation is opposite to be slided.
As shown in figure 3, the peripheral surface of neck bush 21 and the inner peripheral surface of external bushing 22 are provided in the axial direction with several torsion slots
24, the auxiliary section 2311 coordinated with torsion slot 24 is wholely set on the peripheral surface and inner peripheral surface of contact piece 231.Contact piece
231, by the cooperation for reversing slot 24 on auxiliary section 2311 and neck bush 21 and external bushing 22, can effectively reduce external bushing
It is produced relative sliding in torque direction between 22 and contact piece 231 and between contact piece 231 and neck bush 21.
In conclusion the operation principle of the present invention is that：
After gear shaft 3 twists deformation because of load, the torsional deflection amount of gear shaft 3 passes sequentially through external bushing 22, contact piece
231 and neck bush 21 be transferred to torsional axis 11, so that torsional axis 11 is twisted deformation, the foil gauge 12 on torsional axis 11 is with torsion
The deformation of axis 11 and generate deformation, to obtain the torque of torsional axis 11 by the variation of 12 electric signal of foil gauge.When gear shaft 3
With one timing of material and size of torsional axis 11, the relationship of the torsional deflection amount of gear shaft 3 and the torsional deflection amount of torsional axis 11
Centainly, therefore the torque of gear shaft 3 can be immediately arrived at by the torque of torsional axis 11.
Embodiment two：
A method of measuring torque, which is characterized in that include the following steps： S1：On the end face for measuring axis where measured place
Mounting hole 31 is opened up in the axial direction； S2：Torque sensor 1 is mounted on by fixing piece 2 in mounting hole 31, ensures torque
The torsional axis 11 and mounting hole 31 of sensor 1 are coaxial； S3：The torque that torque sensor 1 is measured is at the torsion for measuring axis
Square.
Wherein there are many forms of fixing piece 2, torque sensor 1 can be fixedly mounted in mounting hole 31 by being subject to.
When the structure of fixing piece 2 uses the structure described in embodiment one, joined using the step of fixed installation fixing piece 2 of fixing piece 2
See embodiment one.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (6)
1. a kind of torque sensing device assembly, including torque sensor（1）And fixing piece（2）, which is characterized in that it is located at for measuring
The gear shaft of output end of reducer（3）Torque, gear shaft（3）Free end offer mounting hole along axis direction（31）, turn round
Square sensor（1）And fixing piece（2）Positioned at mounting hole（31）It is interior, torque sensor（1）Including torsional axis（11）And foil gauge
（12）, foil gauge（12）It is tightly attached to torsional axis（11）Surface, torsional axis（11）Pass through fixing piece（2）It is fixed on mounting hole（31）
It is interior.
2. a kind of torque sensing device assembly according to claim 1, which is characterized in that torsional axis（11）With gear shaft（3）
Coaxial arrangement.
3. a kind of torque sensing device assembly according to claim 2, which is characterized in that fixing piece（2）Including coaxial arrangement
Two groups of neck bush（21）, external bushing（22）With tighten part（23）, neck bush（21）Madial wall be respectively sleeved at torsional axis
（11）Both ends, external bushing（22）Lateral wall be plugged on mounting hole（31）It is interior；Neck bush（21）The diameter of peripheral surface is along axis
First increases and then decreases on direction forms the first inclined-plane（211）With the second inclined-plane（212）, external bushing（22）The diameter edge of inner peripheral surface
First reduce on axis direction and increase afterwards, forms third inclined-plane（221）With the 4th inclined-plane（222）, it is in torque sensing device assembly
First inclined-plane when installation condition（211）With third inclined-plane（221）Relatively；Tighten part（23）Positioned at external bushing（22）With neck bush
（21）Between, include the contact piece of two panels annular（231）And turnbuckle（232）, two panels contact piece（231）Respectively with first
Inclined-plane（211）With third inclined-plane（221）And second inclined-plane（212）With the 4th inclined-plane（222）It abuts, turnbuckle（232）
It is even to be arranged in contact piece（231）On, and turnbuckle（232）Across side contact piece（231）With other side contact piece（231）Spiral shell
Line connects.
4. a kind of torque sensing device assembly according to claim 3, which is characterized in that neck bush（21）With torsional axis（11）
Between and external bushing（22）With mounting hole（31）Between pass through key connecting.
5. a kind of torque sensing device assembly according to claim 3 or 4, which is characterized in that neck bush（21）Peripheral surface
And external bushing（22）Inner peripheral surface be provided in the axial direction with several torsion slots（24）, contact piece（231）Peripheral surface and inner circumferential
It has been wholely set on face and torsion slot（24）The auxiliary section of cooperation（2311）.
6. a kind of method measuring torque, which is characterized in that include the following steps： S1：The end face of axis is measured where measured place
On open up mounting hole in the axial direction（31）； S2：By torque sensor（1）Pass through fixing piece（2）Mounted on mounting hole（31）
It is interior, ensure torque sensor（1）Torsional axis（11）With mounting hole（31）Coaxially； S3：By torque sensor（1）The torsion of measurement
Square is converted into the torque for measuring axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611628.3A CN108593164A (en) | 2018-06-14 | 2018-06-14 | A kind of torque sensing device assembly and the method for measuring torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810611628.3A CN108593164A (en) | 2018-06-14 | 2018-06-14 | A kind of torque sensing device assembly and the method for measuring torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108593164A true CN108593164A (en) | 2018-09-28 |
Family
ID=63628448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810611628.3A Pending CN108593164A (en) | 2018-06-14 | 2018-06-14 | A kind of torque sensing device assembly and the method for measuring torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108593164A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113878615A (en) * | 2021-09-27 | 2022-01-04 | 伯朗特机器人股份有限公司 | Robot joint motor torque calculation method |
| CN114526853A (en) * | 2022-02-23 | 2022-05-24 | 深圳瑞湖科技有限公司 | Shaft torque detection device |
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Application publication date: 20180928 |