CN86105879A - attached type force-measuring sensor - Google Patents
attached type force-measuring sensor Download PDFInfo
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- CN86105879A CN86105879A CN86105879.8A CN86105879A CN86105879A CN 86105879 A CN86105879 A CN 86105879A CN 86105879 A CN86105879 A CN 86105879A CN 86105879 A CN86105879 A CN 86105879A
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- measuring sensor
- type force
- attached type
- force
- flexible member
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Abstract
The present invention relates to a kind of attached type force-measuring sensor.The two ball pivot support mechanisms and the protective device of the three segments combined sensor body that it is connected by chain type, band micromatic setting are formed.Support is on the high rigid mount that is welded in advance on the framework pillar.Flexible member in the sensor body is a sheet type, and two groups of resistance-strain electric bridges are arranged.Therefore it has bigger stress amplification coefficient, has characteristics such as operating accuracy height, reliable and stable, long service life, and is easy to make maintenance, can install rapidly, accurately reset.This sensor is mainly used in the mill milling force measurement, also is applicable to the measurement that other occasion is exerted oneself and is out of shape.
Description
The present invention relates to a kind of attached type force-measuring sensor of measuring mill rolling force.
The milling train continuous working under the mal-conditions such as high temperature and high load lotus of being everlasting.Roll-force in rolling between milling train and the rolled piece becomes most important technology, power energy parameter, also is most important process control parameters, so the detection of roll-force is all significant to milling train and Rolling Production.Mostly traditional measurement of rolling force device is supporting type.Because they are contained on the roll-force transfer line, directly bear up to several tons to the tested roll-force of thousands of tons of, condition of work is abominable in addition, so technical difficulty is big, the big heaviness of body, processing and working service are all complicated, and are easy to damage.Attached type force-measuring sensor does not directly bear by dynamometry, so can overcome above-mentioned shortcoming because condition of work is better.United States Patent (USP) 38 58 44 0 has been described attached type force-measuring sensor, will be connected on the member by conical screw, and the safety coefficient of rolling-mill housing is bigger in the heavily stressed member but it generally is applicable to, so stress is extremely low, be generally the 50-100 kgf/centimetre
2, and milling train requires the sensor can the Fast Installation adjustment aborning, and easy to use, and under abominable condition of work, reliable operation arranged long serviceable life, and above-mentioned attached type force-measuring sensor can not satisfy these requirements.
The objective of the invention is to design a kind of technological performance, reliable operation, be easy to the attached type force-measuring sensor making, install and keep in repair, be convenient to promote the use of.Attached type force-measuring sensor of the present invention is mainly used in the mill milling force measurement, also can be used for the power of other machine or member and the measurement of distortion.
The two ball pivot support mechanisms and the protective device of the three segments combined sensor body that attached type force-measuring sensor of the present invention is connected by chain type, band micromatic setting are formed.Wherein three segments combined sensor body of chain type connection are to be formed by connecting by upper and lower traction piece and flexible member; The two ball pivot support mechanism of band micromatic setting by handwheel, support screw, set nut, top steel ball, bottom steel ball and micromatic setting and form; Protective device is formed by being filled with the liquid protective medium in loam cake, end tube and the tube.
The objective of the invention is to realize by following technical scheme:
By Fig. 1 (the attached type force-measuring sensor fundamental diagram that is used for milling train) as can be known, when milling train is subjected to rolling force F, i stressed F of column of frame
iIf the sensor base on this column is long to be L, the length and the sectional area of traction piece and flexible member are respectively l
2, l
1And A
2, A
1, the elongation of framework pillar in the L scope is △ L, the elongation of sensor correspondent section is respectively △ l
2With △ l
1, the strain and stress of column on neutral surface is respectively ε
HAnd σ
H, the strain and stress of flexible member is respectively ε
1And σ
1, can get by Hooke's law:
ε
H＝ (△L)/(L) ＝ (F
i)/(EA) ，σ
H＝ (E△L)/(L) ＝ (F
i)/(A) ……（1）
Wherein: the module of elasticity of E-frame material (steel).
Because strain and stress and sectional area are inversely proportional to, so the elongation strain of sensor can be write again
When flexible member and traction piece were all steel, its E value was identical with frame.
With (2) formula substitution (1) Shi Zede
(4) β is the strain amplification coefficient in the formula.When L is healed greatly l
1And (A
1)/(A
2) more hour, β value more greatly; Work as A
1＜＜A
2The time, β is tending towards maximal value β max=(L)/(l
1).
Because attached type force-measuring sensor of the present invention is selected A for use
1＜＜A
2, make strain (stress) level of flexible member amplify β doubly than the strain (stress) of framework pillar, make general upright column of rolling mill stress 50～100 kgfs/centimetre
2Situation under, flexible member be in the higher stress level (200～1000 kgfs/centimetre
2) descend work, thus the sensitivity and the precision of measurement of rolling force improved.
Simultaneously, can also see from Fig. 1 that when rolling-mill housing is stressed when being F, column section X-X goes up the stress strain diagram that produces linear distribution, the stress of outer rim is respectively σ in the column
iAnd σ
o, and the stress σ on the neutral surface
HThen be the pure extension stress that roll-force causes.Sectional area as each column is all A, the stressed F that is respectively
1, F
2, F
3And F
4, then general rolling force F is:
F＝∑F
i＝A
σ
HiI=1,2,3 and 4.
Hence one can see that, when four columns all are equipped with attached type force-measuring sensor, can record general rolling force F.In fact because the symmetry of frame, stressed identical with side frame two columns in general, thereby an attached type force-measuring sensor only is installed on every side frame on the engineering is got final product.
Because the flexible member of attached type force-measuring sensor of the present invention is the sheet type hardware, can guarantee A on the one hand
1＜＜A
2, make whole sensor that very big ratio of rigidity be arranged, can guarantee that again its stress-strain state extremely approaches the neutral surface of upright column of rolling mill simultaneously, therefore can reflect actual information more accurately, guarantee to have good technical performance.
In the three segments combined sensor body that chain type connects, be to adopt the chain rivet type of attachment between flexible member and the upper and lower traction piece, self-alignment performance and counter-bending interference performance had so both been strengthened, also for adopting the sheet type flexible member that condition is provided, and be convenient to manufacturing, maintenance and the replacing of flexible member.
Post foil resistance strain gauge on the flexible member, and double bridge output is arranged,, also can be used for compensating purpose except that two-way roll-force information being provided, having standby property and the raising reliability.
The attached form of attached type force-measuring sensor of the present invention, the two ball pivot support mechanism that adopts the variable degree of band micromatic setting.
By two ball pivot supports on the upper and lower bearing of high rigidity that is welded on the upright column of rolling mill neutral surface.This just can guarantee that attached type force-measuring sensor is in two good power bar duties, has the good mechanical performance, and the characteristic that automatic centering is provided and has quick and precisely resetted, guaranteed good installation accuracy, got rid of and repeated to install issuable stochastic error.
The aperture of two ball pivot support mechanism is to adjust by the handwheel of swivel bearing screw.Because they all are contained on the sensor, thereby preset in advance, are convenient to realize Fast Installation under non-stop-machine situation.
Two ball pivot support mechanism has micromatic setting, by the rotary fine adjustment handwheel, drives fine adjustment screw, make wedge convenient, accurately move, thereby change tension force, adjust prestress and select suitable working point, also can carry out the simulated calibration of strain.
The protective device of attached type force-measuring sensor of the present invention is formed by being filled with the liquid protective medium in loam cake, end tube and the tube.Play samming, insulation, sealing function.Attached type force-measuring sensor can be maintained a good state, on milling train, stablize, work reliably, improve its serviceable life.
Attached type force-measuring sensor of the present invention is through contrast test on the hot-rolled steel machine, proof has higher stress amplification coefficient and good technical performance, the roll-force waveform of its output is very consistent with the bearing-type force sensor output waveform of directly bearing roll-force, measures accurate (see figure 7).Owing to be filled with the liquid protective medium in protective device inside, can be under the big rugged surroundings of temperature variation operate as normal, long service life, and the micro-adjusting mechanism of adjusting prestress and selecting the working point is arranged.With existing attached type force-measuring sensor ratio, force cell of the present invention also has to be installed rapidly, and processing and manufacturing is easy, advantage such as changes, easy to maintenance.
The embodiment represented below in conjunction with accompanying drawing describes in further detail the present invention.
Fig. 1 is used for the attached type force-measuring sensor fundamental diagram of milling train.
Fig. 2, attached type force-measuring sensor structure diagram (facing).
Fig. 3, attached type force-measuring sensor structure diagram (side-looking).
Fig. 4, the chain type of flexible member and the traction piece figure (M-M section) that is linked and packed.
Fig. 5, the chain type of flexible member and the traction piece figure (K to) that is linked and packed.
Fig. 6, the micromatic setting cut-open view.
Fig. 7, the actual measurement roll-force comparison of wave shape figure of adhesion type and bearing-type force sensor.
Among the figure: the F-roll-force.The B-rolling-mill housing.The C-attached type force-measuring sensor.σ
iFiber stress in the-upright column of rolling mill.σ
oThe outer fiber stress of-upright column of rolling mill.σ
HThe stress of-upright column of rolling mill neutral surface.The 1-handwheel.2-supports screw.3-top steel ball.4-bottom steel ball.The 5-upper guiding piece.Traction piece under the 6-.The 7-upper bracket.The 8-undersetting.The 9-loam cake.Tube at the bottom of the 10-.The last chain rivet of 11-.Chain rivet under the 12-.The 13-upper bearing.The 14-lower bearing.15-top end cap.The 16-lower end cap.The 17-upper sleeve.The 18-lower sleeve portion.The 19-flexible member.The 20-strain ga(u)ge.The 21-trimming hand wheel.The 22-fine adjustment screw.The 23-fine-tuning nut.The 24-wedge.The 25-taper liner.The 26-scale.27-finely tunes set nut.The 28-framework pillar.The 29-set nut.30-liquid protective medium.The 31-lead terminal.The equal pressure pad circle of 32-.F
CL, F
DL-changing side and transmission side supporting type sensor output roll-force.F
CB, F
DB-changing side and transmission side adhering sensor output roll-force.0-0-upright column of rolling mill neutral surface.
The two ball pivot support mechanism of band micromatic setting of the present invention changes its support aperture by the handwheel (1) that rotation is located at the supporting screw (2) above the upper guiding piece (5).Between supporting screw (2) and taper liner (25) and upper bracket (7), undersetting (8), be respectively equipped with top steel ball (3), bottom steel ball (4).Before the support, off-line is adjusted aperture (opening) in advance, makes it surpass the upper bracket (7) that is welded on the high rigidity on the framework pillar (28) and the gauge length between undersetting (8).After attached type force-measuring sensor was in the installation site, rotation hand wheel (1) can be with the attached type force-measuring sensor support on framework pillar (28), and fixing with set nut (29).Because up and down the support point is respectively equipped with ball pivot,, installs rapidly and accurately reset so attached type force-measuring sensor can be realized automatic centering.
Micromatic setting is arranged on down above the traction piece (6), and wherein fine-tuning nut (23) is fixed by bolts to down on the traction piece (6).Wedge (24) and taper liner (25) are installed between bottom steel ball (4) and the following traction piece (6) successively.Wedge (24) is connected with fine adjustment screw (22).Be equipped with trimming hand wheel (21) on the fine adjustment screw (22).Reach the purpose that changes pretightning force and selected working point by rotary fine adjustment handwheel (21).Because the gradient of wedge (24) and the pitch of fine adjustment screw (22) are accurate designs, and the scale (26) of indication adjustment amount is housed on fine adjustment screw (22), so can realize accurately fine setting, fine setting finishes, and with fine setting set nut (27) working position is fixed.
The two ends of the flexible member of being made by sheet type high-quality cold-strip (19) stud with equal pressure pad circle (32) and a hole are respectively arranged, and respectively with last chain rivet (11), following chain rivet (12) cooperates.With the be linked both sides bore hole respectively of upper guiding piece (5) at place of flexible member (19), respectively adorn a upper bearing (13) (being all rolling bearing).The nut at last chain rivet (11) two ends passes through the inner ring of upper sleeve (17) and upper bearing (13) with flexible member (19) end firm grip.Match with the bore hole of upper guiding piece (5) in the outer ring of upper bearing.Following traction piece (6) is also in identical mode, by chain rivet (12), lower bearing (14), lower sleeve portion (18) are connected with flexible member down.Flexible member (19) is realized axial location and centering by top end cap (15) and the lower end cap (16) that is fixed on upper guiding piece (5), following traction piece (6) the bore hole outside.Install, the chain shaft assembly has hinge effect for traction piece (6) under flexible member (19) and the upper guiding piece (5).
Post one group of foil resistance strain gauge (20) respectively in sheet type flexible member (19) both sides, form two measuring bridges.
The shell that protective device is made up of loam cake (9) and end tube (10) is equipped with lead terminal (31) on loam cake (9), the lead-in wire of strain ga(u)ge (20) is therefrom derived.Can be filled with high-quality silicone oil or transformer wet goods liquid protective medium (30) in the tube, it has good insulation performance, equal gentle sealing property, the job stability and the serviceable life of having improved attached type force-measuring sensor.
Claims (6)
1, a kind of attached type force-measuring sensor that can be used for milling train is characterized in that it is made up of three segments combined sensor body of chain type connection, the two ball pivot support mechanisms and the protective device of band micromatic setting.
2, attached type force-measuring sensor according to claim 1 is characterized in that the flexible member (19) of the three segments combined sensor body that chain type connects is connected on respectively between upper guiding piece (5), the following traction piece (6) by last chain rivet (11), following chain rivet (12), upper bearing (13), lower bearing (14), upper sleeve (17), lower sleeve portion (18), equal pressure pad circle (32) and clamp nut.
3, attached type force-measuring sensor according to claim 1, it is characterized in that being formed by handwheel (1), supporting screw (2), set nut (29), top steel ball (3), bottom steel ball (4) and micromatic setting, and they all are contained on the upper and lower traction piece (5) (6) with the two ball pivot support mechanism of micromatic setting.Whole sensor is by being welded in high rigidity upper bracket (7) and the undersetting (8) on the frame in advance, and support is on the neutral surface of framework pillar (28).
4, attached type force-measuring sensor according to claim 1 is characterized in that protective device is to form owing to being filled with liquid protective medium (30) in loam cake (9), end tube (10) and the tube.
5, attached type force-measuring sensor according to claim 2 is characterized in that flexible member (19) adopts sheet type high-quality cold-strip to make, and posts strain ga(u)ge (20) at working surface.
6, attached type force-measuring sensor according to claim 3 is characterized in that micromatic setting contains trimming hand wheel (21), fine adjustment screw (22), fine-tuning nut (23), wedge (24), taper liner (25), scale (26), fine setting set nut (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86105879.8A CN1004832B (en) | 1986-09-04 | 1986-09-04 | Sensor for measuring force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86105879.8A CN1004832B (en) | 1986-09-04 | 1986-09-04 | Sensor for measuring force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86105879A true CN86105879A (en) | 1987-03-25 |
| CN1004832B CN1004832B (en) | 1989-07-19 |
Family
ID=4803002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86105879.8A Expired CN1004832B (en) | 1986-09-04 | 1986-09-04 | Sensor for measuring force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004832B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806210A (en) * | 2016-05-23 | 2016-07-27 | 广西交通科学研究院 | High-resolution strain testing method |
| CN105823458A (en) * | 2016-05-24 | 2016-08-03 | 广西交通科学研究院 | Vertical strain test method considering inherent error |
| CN108151928A (en) * | 2017-12-22 | 2018-06-12 | 中航电测仪器股份有限公司 | A kind of aircraft control force sensor |
| CN111453311A (en) * | 2020-04-10 | 2020-07-28 | 山东科技大学 | Scraper chain real-time tension detection system based on piezoelectric effect |
-
1986
- 1986-09-04 CN CN86105879.8A patent/CN1004832B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806210A (en) * | 2016-05-23 | 2016-07-27 | 广西交通科学研究院 | High-resolution strain testing method |
| CN105806210B (en) * | 2016-05-23 | 2018-06-01 | 广西交通科学研究院有限公司 | High-resolution strain testing method |
| CN105823458A (en) * | 2016-05-24 | 2016-08-03 | 广西交通科学研究院 | Vertical strain test method considering inherent error |
| CN108151928A (en) * | 2017-12-22 | 2018-06-12 | 中航电测仪器股份有限公司 | A kind of aircraft control force sensor |
| CN111453311A (en) * | 2020-04-10 | 2020-07-28 | 山东科技大学 | Scraper chain real-time tension detection system based on piezoelectric effect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004832B (en) | 1989-07-19 |
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