CN103759875A - Device and method for calculating tension of object by means of torsional moment of object - Google Patents
Device and method for calculating tension of object by means of torsional moment of object Download PDFInfo
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- CN103759875A CN103759875A CN201410029085.6A CN201410029085A CN103759875A CN 103759875 A CN103759875 A CN 103759875A CN 201410029085 A CN201410029085 A CN 201410029085A CN 103759875 A CN103759875 A CN 103759875A
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Abstract
The invention provides a device and method for calculating tension of an object by means of the torsional moment of the object. The device comprises a quadrilateral framework formed by an upper beam, a lower beam, a left support and a right support and is characterized in that the upper beam and the lower beam are provided with arc-shaped grooves matched with a rope, the rope is provided with a torsion structure formed by a first clamping plate, a second clamping plate and a moment plate, and the moment plate is provided with a stress sensor. The tension calculation method includes the steps of (a) fixing the rope, (b) fixing the torsion structure, (c) rotating the torsion structure, (d) doing work through the rope, (e) obtaining the torsion moment, (f) calculating tension of the rope, and (g) judging tension of the rope. According to the torsion moment of the rope tested through the stress sensor, the tension borne by the rope can be accurately and reliably calculated, and when the tested tension of the rope is larger than the largest safe tension (img file='2014100290856100004dest_path_image002.TIF' wi='24' he='24'/), a warning signal is sent out, and a worker is reminded to take preventive measures.
Description
Technical field
The present invention relates to a kind of torsional moment by object and calculate the device and method of its tension force, in particular, relate in particular to a kind of be applicable to rope that Filament-wound Machine forms by torsional moment, calculate the device and method of its tension force.
Background technology
The rope that tinsel, man-made fiber form is widely used in many occasions, as traction rope of the suspension strop of the haulage cable of elevator, container, boats and ships etc., during the work of this drag rope, mainly apply pulling force along its length, this take it to be subject to tension force as main.But also there is no a kind of device that calculates effectively, reliably the suffered Tensity size of this rope at present, when the pulling force applying at rope exceeds the maximum magnitude that it bears tension force, can not provide effective warning or warning, with prompting user, note and take positive strick precaution to handle, avoiding the generation of peril.
For example, with rope, hanging in the process of lift cargo, often there will be " pressing partially " phenomenon; can make stressed the stressed of all the other ropes that be far longer than of a certain rope; if can not judge in time the state of the every suffered tension force of rope, easily cause goods to fall, cause security incident.For another example, in order effectively to increase the span of bridge, on many bridges, all use suspension cord, under the effect of the different weather conditions such as pedestrian, vehicle process and wind and rain, in different time sections, the stress of every root bridge beam rope is different, if can not obtain the suffered tension state of every rope, very likely can make rope for a long time in crossing tension state, of long duration, easily cause security incident.
Summary of the invention
The present invention is in order to overcome the shortcoming of above-mentioned technical matters, provide a kind of be applicable to rope that Filament-wound Machine forms by torsional moment, calculate the device and method of its tension force.
Torsional moment by object of the present invention is calculated the device of its tension force, comprises the quadrilateral frame being comprised of entablature, sill, left socle and right support, and entablature, sill are fixed on the two ends of left socle and right support abreast; Its special feature is: on described entablature, sill, all offer the deep-slotted chip breaker matching with rope, on entablature, sill, be respectively arranged with rope is fixed on to upper mounted plate, the bottom plate in deep-slotted chip breaker, on the rope between entablature and sill, be provided with torsion structure; Described torsion structure is comprised of the first clamping plate, the second clamping plate and moment plate, on the first clamping plate and the second clamping plate, is provided with the deep-slotted chip breaker matching with rope, and moment plate and the first clamping plate and the second clamping plate all fix, and on moment plate, are provided with strain transducer; On described left socle and right support, all offer the locating slot matching with moment plate, the top of locating slot is provided with the limiting plate that moment plate is fixed.
Torsional moment by object of the present invention is calculated the device of its tension force, and fixed plate, bottom plate fix with entablature, sill respectively by fastening bolt, and the first clamping plate and the second clamping plate are fixed together by fastening bolt; Described limiting plate is rotated and is fixed on left socle or right support by turning axle.
Torsional moment by object of the present invention is calculated the device of its tension force, also comprise the circuit part with collection, computing and control action, described circuit part comprises microcontroller, amplifying circuit, display circuit and warning circuit, the output terminal of amplifying circuit is connected with the A/D translation interface of microcontroller, display circuit is all connected with the output terminal of microcontroller with warning circuit, and the output terminal of strain transducer is connected with the input end of amplifying circuit after filtering circuit.
Torsional moment by object of the present invention is calculated the computing method of its tensioner, and the distance of establishing between entablature and sill is 2
, the centre position of torsion structure between entablature and sill, rope by
bar spiral fiber silk forms; Moment plate with respect to the anglec of rotation of initial position is
, length is 2
rope in the anglec of rotation of spiral fiber silk be
; And to take the center of the rope between entablature and sill be true origin o, the axis of rope is z axle, sets up rectangular coordinate system in space o-xyz; Being located at the tension force that rope is subject to is
time, its corresponding torsional moment is
, establish the safe tension force of maximum that rope can bear and be
; Tension force computing method comprise the following steps: a). stationary rope, rope is placed in to the deep-slotted chip breaker on entablature and sill, and by upper mounted plate and bottom plate, be fixed respectively, so that rope can move along its length and can not rotate around its length direction in the bearing of entablature and sill; B). permanent twist structure, the first clamping plate and the second clamping plate are positioned over to the centre position of rope between entablature and sill, make rope be positioned at the deep-slotted chip breaker on the first clamping plate and the second clamping plate, together with the first clamping plate being firmly fixed with the second clamping plate by fastening bolt, so that rope can not rotate with respect to the first clamping plate and the second clamping plate; C). rotation torsion structure, along the sense of rotation of cord fibers, rotate torsion structure, moment plate is placed in to the locating slot on left socle, and limiting plate is rotated extremely towards upper/lower positions, to utilize limiting plate to realize the position-limiting action to moment plate; D). by rope, do work, utilize rope to draw object, rope can be subject to tension force effect; When being subject to tension force, rope can make moment plate generation deformation; E). obtain torsional moment, circuit part, by the deformation quantity of monitor strain sensor, obtains torsional moment now, establishes torsional moment and is
; F). calculate the tension force of rope, according to step e) in the torsional moment that records, by formula (1), calculate the suffered tension force of rope
;
Wherein,
for in rope
the distance of the projector distance initial point o of bar spiral fiber silk in the xoy of rectangular coordinate system o-xyz plane; G). the tension force to rope judges, according to step f) in the tension force obtained
, judgement inequality
whether set up, if set up, illustrate that tension force that rope is subject to is within safety requirements scope; If be false, show that tension force that rope is subject to has exceeded the scope of safety requirements, send alerting signal with the prompting relevant personnel.
The invention has the beneficial effects as follows: the torsional moment by object of the present invention is calculated the apparatus and method of its tension force, by rope is fixed on entablature and sill, rope can be stretched along its length, in bearing, can not be rotated; By the torsion structure being comprised of the first clamping plate, the second clamping plate and moment plate is set on rope, the first clamping plate and the second clamping plate can be realized firmly adding and holding rope, and be provided with strain transducer on moment plate, rope can make strain transducer generation deformation under the effect of tension force, the torsional moment of the rope therefore recording according to strain transducer, can calculate the size of the suffered tension force of rope accurately, reliably.
By locating slot and limiting plate are set on left socle and right support, can effectively to postrotational moment plate, be fixed.Torsional moment by object of the present invention is calculated the apparatus and method of its tension force, when measuring to such an extent that the tension force T of rope is greater than maximum safe tension force and is
time, send alerting signal, to remind relevant staff to note and to take the precautionary measures.
Accompanying drawing explanation
Fig. 1 is the structural representation that the torsional moment by object of the present invention is calculated its tensioner;
Fig. 2 is the use constitutional diagram that the torsional moment by object of the present invention is calculated its tensioner;
Fig. 3 is the schematic diagram of circuit part in the present invention;
Fig. 4 is the process flow diagram of tension force computing method in the present invention.
In figure: 1 entablature, 2 sills, 3 left socles, 4 right supports, 5 ropes, 6 upper mounted plates, 7 bottom plates, 8 first clamping plate, 9 second clamping plate, 10 moment plates, 11 strain transducers, 12 fastening bolts, 13 locating slots, 14 limiting plates, 15 turning axles.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, provided the torsional moment by object of the present invention and calculated the structural representation of its tensioner, it comprises entablature 1, sill 2, left socle 3, right support 4, upper mounted plate 6, bottom plate 7, the first clamping plate 8, the second clamping plate 9, moment plate 10, strain transducer 11 and fastening bolt 12; Shown left socle 3 be arranged in parallel with right support 4, and entablature 1 and sill 2 are individually fixed in the two ends up and down of left socle 3 and right support 4.On entablature 1, sill 2, all offer the deep-slotted chip breaker matching with rope 5, upper mounted plate 6, bottom plate 7 are fixed the rope on entablature 1, sill 2 respectively.On the first clamping plate 8 and the second clamping plate 9, all offer the deep-slotted chip breaker matching with rope 5, the first clamping plate 8 and the second clamping plate 9 are added rope 5 to hold tightly by fastening bolt 12, moment plate 10 and the first clamping plate 8 and the second clamping plate 9 are fixed together, and strain transducer 11 is fixed on moment plate 10; By strain transducer 11, can measure the deformation quantity of moment plate 10, and then obtain the torsional moment of moment plate 10.
On shown left socle 3 and right support 4, all offer locating slot 13, locating slot 13 is for matching with postrotational moment plate 10, on the left socle 3 of locating slot 13 tops and right support 4, be provided with limiting plate 14, limiting plate 14 is rotated fixing by turning axle 15, the moment plate 10 that 14 pairs of limiting plates enter into locating slot 13 carries out spacing.As shown in Figure 3, provided the schematic diagram of circuit part in the present invention, it comprises microcontroller 18, filtering circuit 16, amplifying circuit 17, display circuit 19 and warning circuit 20, the signal of strain transducer 11 outputs inputs in amplifying circuit 17 after the processing of filtering circuit 16, and amplifying circuit 17 inputs in microcontroller 18 after signal is amplified.Microcontroller 18 carries out the signal of amplifying circuit 17 outputs after A/D conversion, by correlation computations, obtains the Tensity size of rope 5, to showing by display circuit 19 for information about; When the overtension of rope, by warning circuit, send alerting signal.
Device of the present invention is in the process of using, first rope 5 is placed in to the deep-slotted chip breaker on entablature 1 and sill 2, by fastening bolt 12, upper mounted plate 6 is fixed on entablature 1, so just rope 5 is pressed in the deep-slotted chip breaker on entablature 1 tightly, make the rope 5 at entablature 1 place can be by up-down stretch, and axis rotation that can not wiring rope 5.Similarly, bottom plate 7 is fixed on sill 2 by fastening bolt 12, to rope 5 is pressed in the deep-slotted chip breaker on sill 2 tightly, also makes the rope 5 at sill 2 places be stretched along its length, and can not be rotated.Then, the first clamping plate 8 and the second clamping plate 9 are placed in to the both sides in rope 5 centre positions between entablature 1 and sill 2, and together with the first clamping plate 8 being firmly fixed with the second clamping plate 9 by fastening bolt 12, make like this rope 5 to relatively rotate with respect to the first clamping plate 8 and the second clamping plate 9.Finally, by turning moment plate 10, moment plate 10 is placed in to the locating slot 13 on left socle 3, and 14 pairs of moment plates of rotary stopper plate 10 carry out spacing, rope 5 between entablature 1 and sill 2 is rotated in Tensile tension force like this, can make moment plate 10 have the trend that returns to initial position.And the tensile stress that rope 5 is subject to is larger, the trend that moment plate 10 returns to initial position is just larger.The strain transducer 11 being arranged on moment plate 10 can be measured the moment size on moment plate 10.Therefore,, if can give expression to exactly the relation of the torsional moment on 5 suffered wind tunnel plates 10 of rope, in the situation that recording torsional moment, can effectively calculate the tension force of rope 5, to the stressed of rope 5 assessed.
As shown in Figure 4, provided the process flow diagram of tension force computing method in the present invention, the distance of establishing between entablature 1 and sill 2 is 2
, the centre position of torsion structure between entablature 1 and sill 2, rope 5 by
bar spiral fiber silk forms; Moment plate 10 with respect to the anglec of rotation of initial position is
, length is 2
rope in the anglec of rotation of spiral fiber silk be
; And to take the center of the rope between entablature and sill be true origin o, the axis of rope is z axle, sets up rectangular coordinate system in space o-xyz; Being located at the tension force that rope is subject to is
time, its corresponding torsional moment is
, establish the safe tension force of maximum that rope can bear and be
; Torsional moment by object of the present invention is calculated the computing method of its tensioner, by following steps, realizes:
A). stationary rope, rope 5 is placed in to the deep-slotted chip breaker on entablature 1 and sill 2, and by upper mounted plate 6 and bottom plate 7, be fixed respectively, so that rope can move along its length and can not rotate around its length direction in the bearing of entablature and sill;
B). permanent twist structure, the first clamping plate 8 and the second clamping plate 9 are positioned over to the centre position of rope between entablature and sill, make rope be positioned at the deep-slotted chip breaker on the first clamping plate and the second clamping plate, together with the first clamping plate being firmly fixed with the second clamping plate by fastening bolt 12, so that rope can not rotate with respect to the first clamping plate and the second clamping plate;
C). rotation torsion structure, along the sense of rotation of cord fibers, rotate torsion structure, moment plate is placed in to the locating slot 13 on left socle 3, and limiting plate 14 is rotated extremely towards upper/lower positions, with the position-limiting action that utilizes limiting plate 14 to realize moment plate;
D). by rope, do work, utilize rope to draw object, rope can be subject to tension force effect; When being subject to tension force, rope can make moment plate generation deformation;
E). obtain torsional moment, circuit part, by the deformation quantity of monitor strain sensor 11, obtains torsional moment now, establishes torsional moment and is
;
F). calculate the tension force of rope, according to step e) in the torsional moment that records, by formula (1), calculate the suffered tension force of rope
;
Wherein,
for in rope
the distance of the projector distance initial point o of bar spiral fiber silk in the xoy of rectangular coordinate system o-xyz plane;
The derivation of formula (1) is as follows:
Between in rectangular coordinate system o-xyz, rope on z direction of principal axis
the bar spiral fiber silk anglec of rotation
indicate, as shown in Equation (2):
Wherein, vector
,
,
for the unit vector in x-axis, y-axis and z-axis direction,
pitch for spiral fiber silk;
The
the length of bar spiral fiber silk can be obtained by formula (3):
Due to H=
, substitution formula (3) can draw:
If the rope anglec of rotation between entablature 1 and sill 2
after, the length of spiral fiber silk becomes
,
expression formula be:
（5）
The elongation of spiral fiber silk
for:
If bottom side length is
, height is
, hypotenuse length is
base and the angle between hypotenuse of right-angle triangle be
, known:
Elongation
can approximate representation be:
If the cross-sectional area of spiral fiber silk is
, Young modulus is
, can obtain spiral fiber silk and carry out elongation
distortion after, required tension force
for:
Can obtain the unit tangent vector of spiral fiber silk
for:
Due to
, can obtain
Combinatorial formula (9), (10) and (11) can obtain:
Making a concerted effort of all spiral fiber silks is the tension force that rope is subject to
;
（13）
Act on the tension force on spiral fiber silk
the torque producing
for:
Formula (2), (9), (10), (11) substitution formula (14) can be obtained:
The torsional moment of all spiral fiber silks is:
Utilize formula (13) and (16) cancellation rotational angle
can draw formula (1).
G). the tension force to rope judges, according to step f) in the tension force obtained
, judgement inequality
whether set up, if set up, illustrate that tension force that rope is subject to is within safety requirements scope; If be false, show that tension force that rope is subject to has exceeded the scope of safety requirements, send alerting signal with the prompting relevant personnel.
Claims (4)
1. the torsional moment by object is calculated the device of its tension force, comprise the quadrilateral frame being comprised of entablature (1), sill (2), left socle (3) and right support (4), entablature, sill are fixed on the two ends of left socle and right support abreast; It is characterized in that: on described entablature, sill, all offer the deep-slotted chip breaker matching with rope (5), on entablature, sill, be respectively arranged with rope is fixed on to upper mounted plate (6), the bottom plate (7) in deep-slotted chip breaker, on the rope between entablature and sill, be provided with torsion structure; Described torsion structure is comprised of the first clamping plate (8), the second clamping plate (9) and moment plate (10), on the first clamping plate and the second clamping plate, be provided with the deep-slotted chip breaker matching with rope, moment plate and the first clamping plate and the second clamping plate all fix, and are provided with strain transducer (11) on moment plate; On described left socle and right support, all offer the locating slot (13) matching with moment plate, the top of locating slot is provided with the limiting plate (14) that moment plate is fixed.
2. the torsional moment by object according to claim 1 is calculated the device of its tension force, it is characterized in that: fixed plate (6), bottom plate (7) fix with entablature (1), sill (2) respectively by fastening bolt (12), the first clamping plate (8) are fixed together by fastening bolt with the second clamping plate (9); Described limiting plate (14) is rotated and is fixed on left socle (3) or right support (4) by turning axle (15).
3. the torsional moment by object according to claim 1 and 2 is calculated the device of its tension force, it is characterized in that: also comprise there is collection, the circuit part of computing and control action, described circuit part comprises microcontroller (18), amplifying circuit (17), display circuit (19) and warning circuit (30), the output terminal of amplifying circuit is connected with the A/D translation interface of microcontroller, display circuit is all connected with the output terminal of microcontroller with warning circuit, and the output terminal of strain transducer is connected with the input end of amplifying circuit after filtering circuit.
4. the torsional moment by object according to claim 1 is calculated computing method for its tensioner, and the distance of establishing between entablature (1) and sill (2) is 2
, torsion structure is positioned at the centre position between entablature (1) and sill (2), rope (5) by
bar spiral fiber silk forms; Moment plate (10) with respect to the anglec of rotation of initial position is
, length is 2
rope in the anglec of rotation of spiral fiber silk be
; And to take the center of the rope between entablature and sill be true origin o, the axis of rope is z axle, sets up rectangular coordinate system in space o-xyz; Being located at the tension force that rope is subject to is
time, its corresponding torsional moment is
, establish the safe tension force of maximum that rope can bear and be
; Tension force computing method comprise the following steps:
A). stationary rope, rope (5) is placed in to the deep-slotted chip breaker on entablature (1) and sill (2), and by upper mounted plate (6) and bottom plate (7), be fixed respectively, so that rope can move along its length and can not rotate around its length direction in the bearing of entablature and sill;
B). permanent twist structure, the first clamping plate (8) and the second clamping plate (9) are positioned over to the centre position of rope between entablature and sill, make rope be positioned at the deep-slotted chip breaker on the first clamping plate and the second clamping plate, together with the first clamping plate being firmly fixed with the second clamping plate by fastening bolt (12), so that rope can not rotate with respect to the first clamping plate and the second clamping plate;
C). rotation torsion structure, sense of rotation along cord fibers is rotated torsion structure, moment plate is placed in to the locating slot (13) on left socle (3), and limiting plate (14) is rotated extremely towards upper/lower positions, to utilize limiting plate (14) to realize the position-limiting action to moment plate;
D). by rope, do work, utilize rope to draw object, rope can be subject to tension force effect; When being subject to tension force, rope can make moment plate generation deformation;
E). obtain torsional moment, circuit part, by the deformation quantity of monitor strain sensor (11), obtains torsional moment now, establishes torsional moment and is
;
F). calculate the tension force of rope, according to step e) in the torsional moment that records, by formula (1), calculate the suffered tension force of rope
;
Wherein,
for in rope
the distance of the projector distance initial point o of bar spiral fiber silk in the xoy of rectangular coordinate system o-xyz plane;
G). the tension force to rope judges, according to step f) in the tension force obtained
, judgement inequality
whether set up, if set up, illustrate that tension force that rope is subject to is within safety requirements scope; If be false, show that tension force that rope is subject to has exceeded the scope of safety requirements, send alerting signal with the prompting relevant personnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410029085.6A CN103759875B (en) | 2014-01-22 | 2014-01-22 | The device and method of its tension force is calculated by the torsional moment of object |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410029085.6A CN103759875B (en) | 2014-01-22 | 2014-01-22 | The device and method of its tension force is calculated by the torsional moment of object |
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| CN103759875B CN103759875B (en) | 2015-10-14 |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763780A (en) * | 2018-05-31 | 2018-11-06 | 南京信息工程大学 | It is a kind of based on gram in golden difference arithmetic rope pull measurement method |
| CN110411639A (en) * | 2019-08-30 | 2019-11-05 | 浙江致信智控装备有限公司 | A kind of tension sensor of yarn |
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| DE3713290A1 (en) * | 1987-04-18 | 1988-11-03 | Barmag Barmer Maschf | Yarn tensile strength measuring device having a resiliently movable yarn detector |
| CN1940517A (en) * | 2005-09-30 | 2007-04-04 | 沈阳新光华晨汽车发动机有限公司 | Calibrator for measuring on-line belt tension |
| KR100827713B1 (en) * | 2007-01-12 | 2008-05-07 | (주)에이펙스 솔루션 | Method for calculating tension applied to cable tension sensor and deriving method thereof |
| CN101319945A (en) * | 2008-06-30 | 2008-12-10 | 上海都峰智能科技有限公司 | Three-bar single support type tension measurement method |
| CN101922986A (en) * | 2010-07-20 | 2010-12-22 | 河南恒星钢缆有限公司 | Combined clamp of device for monitoring tension of steel strand |
| JP2013217891A (en) * | 2012-04-06 | 2013-10-24 | Fujitec Co Ltd | Rope tension measuring method and device of elevator |
| CN203396530U (en) * | 2013-08-07 | 2014-01-15 | 浙江富邦集团有限公司 | Leather tension detection device with improved structure |
-
2014
- 2014-01-22 CN CN201410029085.6A patent/CN103759875B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3713290A1 (en) * | 1987-04-18 | 1988-11-03 | Barmag Barmer Maschf | Yarn tensile strength measuring device having a resiliently movable yarn detector |
| CN1940517A (en) * | 2005-09-30 | 2007-04-04 | 沈阳新光华晨汽车发动机有限公司 | Calibrator for measuring on-line belt tension |
| KR100827713B1 (en) * | 2007-01-12 | 2008-05-07 | (주)에이펙스 솔루션 | Method for calculating tension applied to cable tension sensor and deriving method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108763780A (en) * | 2018-05-31 | 2018-11-06 | 南京信息工程大学 | It is a kind of based on gram in golden difference arithmetic rope pull measurement method |
| CN108763780B (en) * | 2018-05-31 | 2023-02-28 | 南京信息工程大学 | Rope tension measuring method based on Kriging difference algorithm |
| CN110411639A (en) * | 2019-08-30 | 2019-11-05 | 浙江致信智控装备有限公司 | A kind of tension sensor of yarn |
| CN110411639B (en) * | 2019-08-30 | 2024-04-09 | 浙江致信智控装备有限公司 | Tension sensor for yarn |
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|---|---|
| CN103759875B (en) | 2015-10-14 |
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