CN104948596B - The adaptor of moment of torsion is transmitted between square shaft and square hole shaft - Google Patents
The adaptor of moment of torsion is transmitted between square shaft and square hole shaft Download PDFInfo
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- CN104948596B CN104948596B CN201510376953.2A CN201510376953A CN104948596B CN 104948596 B CN104948596 B CN 104948596B CN 201510376953 A CN201510376953 A CN 201510376953A CN 104948596 B CN104948596 B CN 104948596B
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Abstract
The invention discloses a kind of adaptor that moment of torsion is transmitted between square shaft and square hole shaft, belong to field of measuring technique and Automatic manual transmission field of accessories.The present invention transmits the adaptor of moment of torsion between square shaft and square hole shaft, including square cylinder, the inside and outside sagittal plane of the square cylinder is adapted to square shaft and square hole respectively, the square cylinder is split type, it is put together by two symmetrical right angle pads, open to surrounding in two right angle pads under by torsion state, be bonded with square hole inwall；The upper end of the right angle pad sets installation sheet respectively, and the installation sheet is vertical with right angle pad.Adaptor of the present invention using when can tightly fit in the inwall of square hole, be only under pressure effect, and transmit moment of torsion by power is not acted on and itself by moment of torsion, not by torque failure, indefatigability damage.Adaptor of the present invention being capable of automatic centering when being turned round so that the centre of gyration line of two right angle pads overlaps with the axis of square shaft, square hole.
Description
Technical field
The annex used when coupling the present invention relates to square shaft with square hole shaft, and in particular to one kind is in square shaft and square hole shaft
Between transmit the adaptor of moment of torsion, the field such as torque measurement can be applied to.
Background technology
Coupling for drive shaft and other devices in plant equipment generally be present, drive shaft is raw in industry with square connecting mode
Application in production is more universal, such as field of measuring technique：Standard lever couples often using square with static torque sensor
Axle；The drive shaft of standard torquer is circular shaft, but is then square shaft with coupling for torque sensor；The moment of torsion in industry assembling
Spanner drives bolt with square shaft, is also coupled in the calibrating of torque wrench with square shaft with static torque sensor.
Connection assembling process typically the square shaft of device is placed in the square hole of another device, due to need couple two
Individual device has all been made as finished product by international standard and national standard, and the size of square shaft and square hole immobilizes, when both chis
It is general in the prior art to be reached using 1 or 2 switching sleeves such as 1 grade bigger than square shaft or 2 grades of square hole when very little specification mismatches
To conversion square shaft, square hole specification purpose.Above-mentioned switching sleeve is a rigid integral structure component, and one end is square hole, and required
The square shaft adaptation of switching；The other end is square toes, is adapted to the square hole of required switching.Although switching sleeve can change square shaft
Or square hole specification and transmit moment of torsion simultaneously, but still to have drawback to have to be solved when actually using.
First, above-mentioned switching sleeve itself has a certain length, adds syndeton length during use, on the one hand, switching sleeve
With the fit clearance of square hole and syndeton length increase easily cause in itself square hole shaft axis and square shaft axis occur compared with
Big to deviate, on the other hand, syndeton length increase causes moment of flexure increase caused by side force, can all produce the reason for these two aspects compared with
Big axiality.Above mentioned problem, switching sleeve increase connection are there is when the square hole of static torque sensor is adapted to switching sleeve
The fit clearance of spreading degree, switching sleeve and square hole can all cause sensor axis and drive shaft axis occur it is larger partially
From syndeton length increase causes moment of flexure increase caused by side force, produces larger axiality so that torque measurement is unstable, surveys
Measure data and True Data deviation is larger.The more, the unstability and error of measurement are bigger for the switching sleeve quantity of concatenation.Moment of torsion
Also coupled between spanner and sensor with square shaft with square hole, when the square hole of the square axial ratio sensor of torque wrench is small 2 grades or 3
It is necessary to nested 2 or 3 switching sleeves wherein during level, to transmit moment of torsion.Such a connecting mode increase tens of milliseconds or even
More than 200 millimeters of syndeton length, produces larger axiality, turns into and measures unstable, inaccurate important root.
Secondly, the switching sleeve of monoblock type bears to be also subjected to moment of torsion while pressure, switching sleeve pole under moment of torsion effect
It is yielding, stress concentration is also also easy to produce, it is chipping, switching sleeve is turned into easy consumption accessory.
Some square shafts have been provided with the elastic steel ball of locking action with square hole adaption section, for pinning switching sleeve.With
After switching sleeve couples and reaches the task of fulfiling assignment, the switching sleeve need to be dismantled, be locked in square shaft during dismounting and turn
Female connector cylinder can be also carried over, and need manually to extract switching sleeve, numerous and diverse using process.Such as depart from torque wrench and sensor
When, the switching sleeve being locked in square spanner square shaft can be also carried over, it is necessary to the artificial square shaft by it from torque wrench
Upper extraction, add the complicated property used.After calibration operation terminates, easily inadvertently by torque wrench together with switching sleeve
Take away together, be easily lost switching sleeve annex, influence follow-up calibration operation.
The content of the invention
In order to solve, when square hole is coupled with square shaft by switching sleeve in the prior art, fit clearance increase, connection are grown
Degree increase causes axis runout, moment of flexure increase, produces larger axiality, and switching sleeve is because by the easy fragmentation of high torque
The problems such as, the present invention provides a kind of adaptor that moment of torsion is transmitted between square shaft and square hole shaft, and it can flexibly, efficiently be solved
Articulation issues between certainly different size of square hole and square shaft, no matter what square hole differs with the size of square shaft, all only needs
One adaptor of the invention, the length of unobvious increase connection, unobvious increase moment of flexure, square shaft and square hole are not increased yet
Axiality.Only it is stressed during adaptor of the present invention work simultaneously, moment of torsion can be transmitted and itself is not acted on by moment of torsion, is kept away completely
Exempt from adaptor material to be twisted destroying.
The object of the invention is achieved through the following technical solutions.
A kind of adaptor that moment of torsion is transmitted between square shaft and square hole shaft, including square cylinder, the square cylinder it is interior,
Outer radial surface is adapted to square shaft and square hole respectively, and the square cylinder is split type, and it is spelled by two symmetrical right angle pads
Conjunction forms, and opens to surrounding in two right angle pads under by torsion state, is bonded with square hole inwall；The upper part of the right angle pad
Installation sheet is not set, and the installation sheet is vertical with right angle pad.The side wall of the square cylinder is working face, plays filling gap
Change the effect of square hole size.
Preferably, the adaptor that moment of torsion is transmitted between square shaft and square hole shaft, the right angle pad is along square
Cylinder cross-section center line symmetrically pieces together square cylinder.The cross section of the right angle pad is groove-like.
Another preferred scheme, the adaptor that moment of torsion is transmitted between square shaft and square hole shaft, the right angle pad
Piece symmetrically pieces together square cylinder along square cylinder cross section diagonal.Installation sheet is vertical with right angle pad and constitutes three-dimensional seat
The chip architecture of target three.
It is preferred that the right-angle side on the inside of the square cylinder sets small round corner, small round corner is set to reduce concentrated stress.
The installation sheet plays a part of being easy to handling, and the shape of the installation sheet is arbitrary, and thickness control is in smaller model
In enclosing, reduce axial length as far as possible, the installation sheet thickness is less than or equal to 18mm, and preferably installation sheet thickness is in 1mm~5mm.
If without installation sheet, adaptor loses the supporting of vertical direction, will be unable to mount and dismount.Preferably, the outer of the installation sheet
Side is circular or polygon.
The square cylinder sidewall thickness is the square hole of the required connection half poor with square shaft length of side nominal dimension, to fill
The radial clearance divided between filling square hole and square shaft.Adaptor using when a pair of right angle pads are placed in square hole, piece together
Square cylinder shape, the square shaft that need to couple are placed in the square cylinder, and when reversing the square shaft, four of square shaft are straight
The arm of angle struts two right angle pads, and two right angle pads open to surrounding, square hole inwall are fitted in, between adaptor and square hole
Gap disappear.Therefore, when in use, right angle pad is only under pressure effect, can transmit moment of torsion without being acted on by moment of torsion,
Adaptor material can be avoided to be twisted destroying.
Beneficial effect of the present invention：
The adaptor of the present invention can substitute existing switching sleeve, can flexibly and effectively fill square shaft and square hole it
Between gap, efficiently transmit moment of torsion.First, no matter the fit clearance between square hole and square shaft have it is much, size difference it is several
Level, an adaptor is only needed using the present invention, the switching length between square shaft and square hole, unobvious increase can be greatly reduced
Moment of flexure, the axis of square hole and the axis of square shaft will not be caused to deviate.Secondly, to be filled out because present invention employs split type gap
Cylinder is filled, when square shaft is reversed, forms the centre of gyration line and square shaft, square hole of two right angle pads of gap filling cylinder
Axis overlap, solve the problems, such as axiality well.These can increase substantially the torsion in corresponding torque measurement application
Square measurement accuracy.
Adaptor of the present invention is in use, right angle pad is reversed by square shaft tightly to fit in square hole
Wall, eliminate the gap between right angle pad and square hole inwall so that right angle pad is only under pressure effect, although right angle pad compared with
Existing switching sleeve is thin, but right angle pad transmit moment of torsion and itself is not acted on by moment of torsion, therefore indefatigability damage, switching
The life-span of part is effectively extended, and reduces use cost.
, will not when being stopped when adaptor of the present invention applies to the square shaft for the elastic steel ball for having had locking action
Locked, can release automatically by spring.Right angle pad of the present invention is provided with installation sheet, can prevent from dropping in right angle setting, simultaneously
It is convenient to take out.
Brief description of the drawings
Fig. 1：Couple schematic diagram with larger square hole for smaller square shaft.
Fig. 2：It is A-A in Fig. 1 to diagrammatic cross-section.
Fig. 3：Couple schematic diagram using switching sleeve with square hole for square shaft in the prior art.
Fig. 4：For the front view of the adaptor of the embodiment of the present invention 1.
Fig. 5：For the upward view of the adaptor of the embodiment of the present invention 1.
Fig. 6：For the upward view of the single right angle pad of the embodiment of the present invention 1.
Fig. 7：For the front view of the single right angle pad of the embodiment of the present invention 1.
Fig. 8：For the adaptor use state diagram of embodiment 1.
Fig. 9：For B-B direction diagrammatic cross-section in Fig. 8.
Figure 10：B-B direction diagrammatic cross-section in Fig. 8 when being turned round for the adaptor of embodiment 1.
Figure 11：Diagrammatic cross-section when not turned round for integral sleeve adaptor.
Figure 12：Diagrammatic cross-section when being turned round for integral sleeve adaptor.
Figure 13：For the upward view of the single right angle pad of the embodiment of the present invention 2.
Figure 14：For the front view of the single right angle pad of the embodiment of the present invention 2.
Figure 15：Diagrammatic cross-section when not turned round for the embodiment of the present invention 2.
Figure 16：Diagrammatic cross-section when being turned round for the embodiment of the present invention 2.
Reference：1st, square shaft；2nd, sensor；3rd, square hole；4th, switching sleeve；5th, square cylinder；6th, right angle pad；7、
Installation sheet；8th, socket adapter.
Embodiment
Prior art and the specific embodiment of the invention are described in detail with reference to Figure of description.
The switching sleeve example used below for prior art.
In e measurement technology, square shaft and the square hole size of static torque sensor are designed by relevant criterion.When both chis
When very little specification mismatches, as shown in Figure 1, 2, less square shaft 1 couples with larger square hole 3 in sensor 2, between occurring greatly
Gap, it is unable to reach the effect of joint transmission.In the prior art, solved the above problems using switching sleeve 4, as shown in Figure 3.It is i.e. square
, must 1-2 switching sleeve 4 of concatenation when hole 3 is than 1 big 1 grade or 2 grades of square shaft.Switching sleeve 4 is rigid integral structure component, one end
For square hole, it is adapted to the square shaft of required switching；The other end is square toes, is adapted to the square hole of required switching, monoblock type reducing sleeve
4 square hole of cylinder and the size of square toes can not change.1-2 swivel sleeve 4 of concatenation causes axial length to increase, and changes in addition
Sleeve 4 can be assembled, dismantled, and fit-up gap unavoidably be present between the square toes and square hole 3 of switching sleeve 4, the gap is easy
The axis of the axis of sensor 2 and square shaft 1 is caused on the same line, not produce larger axiality, cause torque measurement knot
Fruit is unstable, inaccurate.The more uncertainty of measurement is bigger for the quantity of switching sleeve 4 of concatenation, totally unfavorable to measurement result.
If coupled between torque wrench and sensor with switching sleeve 4 and also certainly exist above mentioned problem.Switching sleeve 4 turns
The mode of connecing is the main reason for torque wrench calibrator repdocutbility is poor, and measurement result varies with each individual.
To solve the above-mentioned problems in the prior art, present invention preferably employs following two embodiments：
Embodiment 1
As shown in figs. 4-7, the present invention includes square cylinder 5, the inside and outside sagittal plane of the square cylinder 5 respectively with square shaft
It is adapted to square hole, the square cylinder 5 is split type, and it is put together by two symmetrical right angle pads 6, as shown in Figure 4,5.
The adaptor opens in two right angle pads 6 under by torsion state to surrounding, is bonded with square hole inwall；The upper end of the right angle pad 6
Portion sets installation sheet 7 respectively, and the installation sheet 7 is vertical with right angle pad 6.The side wall of the square cylinder is working face, is played
The effect of space change square hole size is filled, the square cylinder sidewall thickness is public for the square hole and the square shaft length of side of required connection
Claim the half of size difference, to be sufficient filling with the radial clearance between square hole and square shaft.The right angle pad 6 is along square cylinder 5
Cross section diagonal symmetrically pieces together square cylinder 5, as shown in Figure 6,7.Installation sheet 7 constitutes three-dimensional coordinate with right angle pad 6
Three chip architectures.
The installation sheet 7 plays a part of being easy to handling, and the shape of the installation sheet 7 is arbitrary, and thickness control is smaller
In the range of, reducing axial length as far as possible, the thickness of installation sheet 7 is less than or equal to 18mm, and thickness can be 2mm, 3mm, 5mm,
8mm, 12mm, 18mm.If without installation sheet 7, adaptor loses the supporting of vertical direction, will be unable to mount and dismount.Preferably, institute
The outer side for stating installation sheet 7 is circular or polygon.The right-angle side of the inner side of square cylinder 5 sets small round corner, sets small
Fillet can reduce concentrated stress.
It is specifically used that as shown in figure 8, right angle pad 6 is positioned in square hole 3 there is certain thickness in the side wall of right angle pad 6,
Reach the effect for changing square hole size.After the insertion of square shaft 1, square hole 3 and right angle pad 6, right angle pad 6 and square shaft 1 it
Between certain fit-up gap all be present, as shown in Figure 9.After square shaft 1 is reversed, four right-angle sides of square shaft 1 are by right angle pad 6
Strut, as shown in Figure 10, two right angle pads 6 open to surrounding, are close to the inwall of square hole 3, so that right angle pad 6 and side
Gapless between hole 3, fit-up gap disappear.Right angle pad 6 is only under pressure effect, is not acted on by moment of torsion, but it transmits power,
Play a part of transmitting moment of torsion.
If adaptor is not split type, the socket adapter 8 of monoblock type is fabricated to, socket adapter 8 turns with square hole, sleeve
Fit-up gap is certainly existed between fitting 8 and square shaft.Then its couple use state it is as shown in figure 11, under by torsion state this zero
Part can not open to surrounding, it is impossible to be fitted in the inwall of sensor square hole, socket adapter 8 while effect is under pressure,
Also acted on by moment of torsion, as shown in figure 12, bearing capacity is small, produces stress concentration, easy fatigue damage.Test result indicates that
The integral sleeve adaptor 8, which has used, just occurs fatigue fracture for 400~600 times, and adaptor of the present invention using 10000 times not yet
Fatigue fracture can occur, also do not allow easy to wear.
Embodiment 2
The present invention includes square cylinder 5, and the inside and outside sagittal plane of the square cylinder 5 is adapted to square shaft and square hole respectively, institute
Square cylinder 5 is stated to be split type, it is put together by two symmetrical right angle pads 6.The adaptor is straight under by torsion state two
Angle pad 6 opens to surrounding, is bonded with square hole inwall；The upper end of the right angle pad 6 sets installation sheet 7, the peace respectively
Load 7 is vertical with right angle pad 6.The side wall of the square cylinder is working face, plays the work of filling space change square hole size
With the square cylinder sidewall thickness is the square hole of the required connection half poor with square shaft length of side nominal dimension, fully to fill out
The radial clearance filled between square hole and square shaft.Right angle pad 6 symmetrically pieces together square tube along square cylinder cross-section center line
Body, for structure as shown in Figure 13,14, the cross section of right angle pad 6 is groove-like.
The installation sheet 7 plays a part of being easy to handling, and the shape of the installation sheet 7 is arbitrary, and thickness control is smaller
In the range of, reducing axial length as far as possible, the thickness of installation sheet 7 is not more than 18mm, and thickness can be 4mm, 6mm, 10mm,
15mm, 17mm.If without installation sheet 7, adaptor loses the supporting of vertical direction, will be unable to mount and dismount.Preferably, the peace
The outer side of load 7 is circular or polygon.The right-angle side of the inner side of square cylinder 5 sets small round corner, sets small round corner
Concentrated stress can be reduced.
Operation principle is consistent with embodiment 1.Equally have and do not acted on by moment of torsion, but play a part of transmitting moment of torsion, no
It is fragile, while can reduce or even eliminate axiality caused by adaptor automatically.Right angle pad 6 is positioned in square hole 3, right angle
There is certain thickness in the side wall of pad 6, reach the effect for changing square hole size.After the insertion of square shaft 1, the inwall of square hole 3 with it is straight
Angle pad 6, certain fit-up gap between right angle pad 6 and square shaft 1 all be present, as shown in figure 15.After square shaft 1 is reversed,
Four right-angle sides of square shaft 1 strut right angle pad 6, and as shown in figure 16, two right angle pads 6 open to surrounding, stress
Working face is close to the inwall of square hole 3, so that gapless between the working face of right angle pad 6 and the inwall of square hole 3, fit-up gap
Disappear.Right angle pad 6 is only under pressure effect, is not acted on by moment of torsion, but plays a part of transmitting moment of torsion.
In torque measurement work, the connection of axle is an important factor for influenceing measurement result, is the inaccurate source of measurement
One of.If during gasket type adaptor in right angle of the present invention is connected applied to torque sensor with other devices, because it axially increases
The length added is only the thickness of installation sheet, and unobvious increase moment of flexure.When square shaft rotates, two right angle pads can be automatic
Reduce or even eliminate axiality caused by adaptor so that the axis of adaptor highly overlaps with the axis of square hole, square shaft.This
The structure of sample can reduce measurement unstability, improve accuracy of measurement, improve the reproduction of the repeatability and equipment of measurement indicating value
Property.Simultaneously during adaptor work of the present invention, gapless between right angle pad and square hole inwall, fit-up gap disappears, in the biography of power
Only be under pressure effect in passing, and is not acted on by moment of torsion, thus will not because part thickness is relatively thin and fragmentation, so as to reduce cost, carry
High workload efficiency.
Experiment shows, preceding using adaptor of the present invention compared with the measurement result using swivel sleeve in torque measurement
Person's indicating value repeatability only has 1/10th of the latter.
It is of the invention to be passed between square shaft and square hole shaft because the square toes of square shaft or torque wrench are by relevant criterion design
The adaptor of torque delivery can be designed to series of products, be established as standard component and largely produce, widely used, help and improve the whole society
Torque measurement techniques it is horizontal.
Claims (8)
1. a kind of adaptor that moment of torsion is transmitted between square shaft and square hole shaft, including square cylinder, the square cylinder it is inside and outside
Sagittal plane is adapted to square shaft and square hole respectively, it is characterised in that：The square cylinder is split type, and it is symmetrical straight by two
Angle pad is put together, and opens to surrounding in two right angle pads under by torsion state, is bonded with square hole inwall；The right angle pad
Upper end sets installation sheet respectively, and the installation sheet is vertical with right angle pad.
2. the adaptor according to claim 1 that moment of torsion is transmitted between square shaft and square hole shaft, it is characterised in that：It is described
Right angle pad symmetrically pieces together square cylinder along square cylinder cross-section center line.
3. the adaptor according to claim 1 that moment of torsion is transmitted between square shaft and square hole shaft, it is characterised in that：It is described
Right angle pad symmetrically pieces together square cylinder along square cylinder cross section diagonal.
4. the adaptor that moment of torsion is transmitted between square shaft and square hole shaft according to claim any one of 1-3, its feature
It is, the right-angle side on the inside of the square cylinder sets small round corner.
5. the adaptor that moment of torsion is transmitted between square shaft and square hole shaft according to claim any one of 1-3, its feature
It is, the installation sheet thickness is less than or equal to 18mm.
6. the adaptor according to claim 5 that moment of torsion is transmitted between square shaft and square hole shaft, it is characterised in that described
Installation sheet thickness is in 1mm~5mm.
7. the adaptor that moment of torsion is transmitted between square shaft and square hole shaft according to claim any one of 1-3, its feature
It is, the outer side of the installation sheet is circular or polygon.
8. the adaptor that moment of torsion is transmitted between square shaft and square hole shaft according to claim any one of 1-3, its feature
It is, the square cylinder sidewall thickness is the square hole of the required connection half poor with square shaft length of side nominal dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376953.2A CN104948596B (en) | 2015-07-01 | 2015-07-01 | The adaptor of moment of torsion is transmitted between square shaft and square hole shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376953.2A CN104948596B (en) | 2015-07-01 | 2015-07-01 | The adaptor of moment of torsion is transmitted between square shaft and square hole shaft |
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| Publication Number | Publication Date |
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| CN104948596A CN104948596A (en) | 2015-09-30 |
| CN104948596B true CN104948596B (en) | 2017-12-19 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107966241A (en) * | 2017-11-06 | 2018-04-27 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of torque measurement switching square set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01172607A (en) * | 1987-12-28 | 1989-07-07 | Matsui Seisakusho:Kk | Driving shaft |
| JPH10299298A (en) * | 1997-04-24 | 1998-11-10 | Bando Chem Ind Ltd | Rotary knob structure |
| JP3710699B2 (en) * | 2000-09-28 | 2005-10-26 | 不動建設株式会社 | Rotational force transmission device |
| EP2707610A1 (en) * | 2011-05-13 | 2014-03-19 | Aktiebolaget SKF | Spacer for rolling bearing, notably used in a wind turbine |
| CN203703593U (en) * | 2014-01-10 | 2014-07-09 | 北华大学 | Mechanical overload protection device |
| CN204239434U (en) * | 2014-09-26 | 2015-04-01 | 上海纳特汽车标准件有限公司 | Injection moulding alternate angle anti-drop square plate mat sheet |
-
2015
- 2015-07-01 CN CN201510376953.2A patent/CN104948596B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01172607A (en) * | 1987-12-28 | 1989-07-07 | Matsui Seisakusho:Kk | Driving shaft |
| JPH10299298A (en) * | 1997-04-24 | 1998-11-10 | Bando Chem Ind Ltd | Rotary knob structure |
| JP3710699B2 (en) * | 2000-09-28 | 2005-10-26 | 不動建設株式会社 | Rotational force transmission device |
| EP2707610A1 (en) * | 2011-05-13 | 2014-03-19 | Aktiebolaget SKF | Spacer for rolling bearing, notably used in a wind turbine |
| CN203703593U (en) * | 2014-01-10 | 2014-07-09 | 北华大学 | Mechanical overload protection device |
| CN204239434U (en) * | 2014-09-26 | 2015-04-01 | 上海纳特汽车标准件有限公司 | Injection moulding alternate angle anti-drop square plate mat sheet |
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