CN102706499B - Cable tension measurement method and device thereof for vertically downward unwinding type winch - Google Patents
Cable tension measurement method and device thereof for vertically downward unwinding type winch Download PDFInfo
- Publication number
- CN102706499B CN102706499B CN201210184092.4A CN201210184092A CN102706499B CN 102706499 B CN102706499 B CN 102706499B CN 201210184092 A CN201210184092 A CN 201210184092A CN 102706499 B CN102706499 B CN 102706499B
- Authority
- CN
- China
- Prior art keywords
- hawser
- force
- cylinder
- cable
- detecting position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a cable tension measurement method and a device thereof for a vertically downward unwinding type winch, and belongs to the filed of winches. The method includes the steps as follows: measuring the length Lc of an unwound cable of a winch during actual operation; judging and finding the layer of a roller where the force-measuring point of the cable is positioned as per the length Lc and the length L of the wound cable on the winch, and judging the distance Rg between the force-measuring point of the cable and the center of the roller; and calculating the tension F of the cable as per the torque equilibrium equation. The device includes a roller and a bracket, wherein the two ends of the roller are installed on the bracket; the bottoms at the two ends of the roller are mounted with sensors in a pressing manner; the device further includes a main-control unit; an opening degree meter for the real-time detection of a stroke of the roller is arranged on a rotating shaft of the roller; and the opening degree meter and the sensors are electrically connected with the main-control unit respectively. According to the invention, the opening degree meter and the main-control unit that are additionally arranged realize the real-time detection for the practical distance between the force-measuring point of the cable and the center of the roller, the real-time tension of the cable can be accurately obtained through the calculation of the main-control unit, the measurement result is more accurate, the structure is simple, and the method and the device provided by the invention are suitable for the winches.
Description
Technical field
The present invention relates to winch field, particularly a kind of cable tension measuring method and device thereof of the winch of rope stretching formula vertically downward.
Background technology
Current, in Marine engineering and oceanographic engineering, it is more and more higher that the operating load of winch requires, thus cause the deadweight of winch and volume increasing, mounting arrangements progressively shifts to open upper deck, this just requires the rope outlet direction of winch for vertically downward.
At present, the method for measurement winch cable tension generally has following two kinds:
Be a direct contact type measuring method, this direct contact type measuring method is that measuring sensor is attached directly on hawser, relies on hawser to carry out measuring cable rope tension to the extruding of sensitive element; Another kind is indirect contact formula measuring method, and this indirect contact formula measuring method is to measure the parts relevant with cylinder, then the related data recording is converted into cable tension.
Inventor, in realizing process of the present invention, finds that prior art at least exists following problem:
First method is used for the hawser of wire quality, but to the hawser of other soft material inapplicable, versatility is poor; Second method is when being converted into cable tension by the related data recording, the force-detecting position of hawser can be taken as to definite value to the distance of centre of the drum, like this, when winch folding and unfolding hawser distance is longer, because the force-detecting position of hawser in use procedure is larger to the change of distance amount of centre of the drum, so cause measurement result to have larger error, measure inaccurate.
Summary of the invention
In order to measure accurately winch cable tension, and improve the versatility of measuring, the embodiment of the present invention provides a kind of cable tension measuring method and device thereof of the winch of rope stretching formula vertically downward.Described technical scheme is as follows:
A cable tension measuring method for the winch of rope stretching formula vertically downward, comprising:
While measuring winch real work, emit the length L c of hawser;
According to the storage rope amount L on described length L c and described winch, judge that the force-detecting position of described hawser is positioned on which layer of cylinder, and determine the force-detecting position of described hawser and the distance R g between described centre of the drum;
According to torque equilibrium equation, calculate described cable tension F.
Particularly, the force-detecting position of the described hawser of described judgement is positioned on which layer of described cylinder, and determines the force-detecting position of described hawser and the distance R g between described centre of the drum, comprising:
The reelable hawser overall length of the n layer Ln that calculates described cylinder according to formula Ln=(B/d) 2 π dn, wherein, B represents cylinder width, and d represents cable diameter, and dn represents the hawser center of n layer and the distance between centre of the drum;
Calculate the cable length Lg=L-Lc being wound around on described cylinder;
When 0≤Lg < L1, the force-detecting position of described hawser is positioned at the ground floor of described cylinder, the distance R g=d1 between the force-detecting position of described hawser and described centre of the drum; When L1≤Lg < L1+L2, the force-detecting position of described hawser is positioned at the second layer of described cylinder, the distance R g=d2 between the force-detecting position of described hawser and described centre of the drum; When L1+L2≤Lg < L1+L2+L3, the force-detecting position of described hawser is positioned at the 3rd layer of described cylinder, the distance R g=d3 between the force-detecting position of described hawser and described centre of the drum; Work as L1+L2+ ... + Ln-1≤Lg < L1+L2+ ... during+Ln-1+Ln, the force-detecting position of described hawser is positioned at the n layer of described cylinder, the distance R g=dn between the force-detecting position of described hawser and described centre of the drum.
More specifically, described dn=[D+ (2n-1) d]/2, wherein, D represents diameter of cylinder, d represents cable diameter.
Further, describedly according to torque equilibrium equation, calculate described cable tension F, comprising:
According to formula F=(F2-F1) Rf/Rg calculates cable tension F, wherein, F1 represents the general pressure that described cylinder two stands left end causes due to described cable tension, F2 represents the general pressure that described cylinder two stands right-hand member causes due to described cable tension, and Rf represents the distance of described F1HeF2Dao centre of the drum.
A kind of cable tension measurement mechanism of the winch of rope stretching formula vertically downward, comprise: cylinder and support, described cylinder two ends are rack-mount, bottom, described cylinder two ends is pressed with respectively sensor, also comprise main control unit, the rotating shaft of described cylinder is provided with for detecting in real time the aperture instrument of cylinder stroke, and this aperture instrument and described sensor are electrically connected to described main control unit respectively.
Particularly, described main control unit comprises programmable logic controller (PLC).
Particularly, described sensor is load sensor.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: by real-time detection and the force-detecting position of calculating hawser and the actual range between centre of the drum, effectively improved the accuracy that cable tension is measured; The real-time detection that has realized the actual range between hawser force-detecting position and centre of the drum by the aperture instrument that adds and main control unit, and by the computing of main control unit, can accurately draw the real-time tension force of hawser, measurement result is more accurate, simple in structure, easy to use.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram of the cable tension measuring method of a kind of winch of rope stretching formula vertically downward of providing in the embodiment of the present invention 1;
Fig. 2 is the structural representation of the cable tension measurement mechanism of a kind of winch of rope stretching formula vertically downward of providing in the embodiment of the present invention 2;
Fig. 3 is the side-looking simplified structure schematic diagram of Fig. 1.
Wherein, support 1, cylinder 2, main control unit 3, sensor 4, aperture instrument 5, hawser 6.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
The embodiment of the present invention provides a kind of cable tension measuring method of the winch of rope stretching formula vertically downward, and referring to Fig. 1, the method comprises:
Step 101: the hawser center and the distance between centre of the drum: dn=[D+ (2n-1) d that calculate the n layer of cylinder]/2, wherein, D represents diameter of cylinder, d represents cable diameter.
Step 102: calculate the reelable hawser overall length of the n layer Ln of cylinder according to formula Ln=(B/d) 2 π dn, wherein, B represents cylinder width.
Step 103: emit the length L c of hawser while measuring in real time winch work.
Particularly, can adopt aperture instrument to measure.
Step 104: according to the storage rope amount L on the length L c recording and winch, the force-detecting position of judgement hawser is positioned on which layer of cylinder, and the force-detecting position of definite hawser and the distance R g between centre of the drum.
Particularly, this step comprises:
Calculate the cable length Lg=L-Lc being wound around on cylinder;
When 0≤Lg < L1, the force-detecting position of described hawser is positioned at the ground floor of described cylinder, the distance R g=d1 between the force-detecting position of described hawser and described centre of the drum; When L1≤Lg < L1+L2, the force-detecting position of described hawser is positioned at the second layer of described cylinder, the distance R g=d2 between the force-detecting position of described hawser and described centre of the drum; When L1+L2≤Lg < L1+L2+L3, the force-detecting position of described hawser is positioned at the 3rd layer of described cylinder, the distance R g=d3 between the force-detecting position of described hawser and described centre of the drum; Work as L1+L2+ ... + Ln-1≤Lg < L1+L2+ ... during+Ln-1+Ln, the force-detecting position of described hawser is positioned at the n layer of described cylinder, the distance R g=dn between the force-detecting position of described hawser and described centre of the drum.
Step 105: calculate described cable tension F according to torque equilibrium equation.
Particularly, this step comprises:
According to formula F=(F2-F1) Rf/Rg calculates the real-time tension force F of hawser, wherein, F1 represents the general pressure that cylinder two stands left end causes due to cable tension, and F2 represents the general pressure that cylinder two stands right-hand member causes due to cable tension, and Rf represents the distance of F1HeF2Dao centre of the drum.
It should be noted that, step 101 and step 102 can be carried out with step 103 or step 104 simultaneously, at this, do not limit its sequencing, and it is configured in main control unit and (sees embodiment 2) after can also calculating in advance according to actual conditions.
The embodiment of the present invention, by detecting in real time and calculating the force-detecting position of hawser and the actual range between centre of the drum, has effectively improved the accuracy that cable tension is measured.
The embodiment of the present invention provides a kind of cable tension measurement mechanism of the winch of rope stretching formula vertically downward, referring to Fig. 2～Fig. 3, this device comprises: support 1, cylinder 2 and main control unit 3, cylinder 2 two ends are arranged on support 1, cylinder 2 bottoms, two ends are pressed with respectively sensor 4, the rotating shaft of cylinder 2 is provided with for detecting in real time the aperture instrument 5 of cylinder 2 strokes, and this aperture instrument 5 and sensor 4 are electrically connected to main control unit 3 respectively.Main control unit 3 comprises programmable logic controller (PLC), for carrying out above-mentioned all computings and judgement.Sensor 4 is load sensor, the general pressure (F1 and F2) causing due to hawser 6 tension force for detecting respectively cylinder 2 two stands two ends.
During concrete use: first, by cylinder 2 diameters, cylinder 2 width, the parameter input main control units 3 such as hawser 6 diameters; Then, measure in real time according to actual needs, the length L c that emits hawser 6 when aperture instrument 5 is worked the winch of measuring is in real time transferred to main control unit 3, meanwhile, the general pressure (F1 and F2) that sensor 4 causes the cylinder 2 two stands two ends of measuring in real time due to hawser 6 tension force is transferred to main control unit 3; Finally, main control unit 3 shows the real-time tension force of hawser 6 by calculating.
The real-time detection that the embodiment of the present invention has realized the actual range between hawser 6 force-detecting positions and cylinder 2 centers by the aperture instrument 5 that adds and main control unit 3, and by the computing of main control unit 3, can accurately draw the real-time tension force of hawser 6, measurement result is more accurate, simple in structure, easy to use.
These are only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a cable tension measuring method for the winch of rope stretching formula vertically downward, is characterized in that, comprising:
While measuring winch real work, emit the length L c of hawser;
According to the storage rope amount L on described length L c and described winch, judge that the force-detecting position of described hawser is positioned on which layer of cylinder, and determine the force-detecting position of described hawser and the distance R g between described centre of the drum;
According to torque equilibrium equation, calculate described cable tension F;
The force-detecting position that judges described hawser is positioned on which layer of described cylinder, and determines the force-detecting position of described hawser and the distance R g between described centre of the drum, comprising:
The reelable hawser overall length of the n layer Ln that calculates described cylinder according to formula Ln=(B/d) 2 π dn, wherein, B represents cylinder width, and d represents cable diameter, and dn represents the hawser center of n layer and the distance between centre of the drum;
Described dn=[D+ (2n-1) d]/2, wherein, D represents diameter of cylinder, d represents cable diameter;
Calculate the cable length Lg=L-Lc being wound around on described cylinder;
When 0≤Lg < L1, the force-detecting position of described hawser is positioned at the ground floor of described cylinder, the distance R g=d1 between the force-detecting position of described hawser and described centre of the drum; When L1≤Lg < L1+L2, the force-detecting position of described hawser is positioned at the second layer of described cylinder, the distance R g=d2 between the force-detecting position of described hawser and described centre of the drum; When L1+L2≤Lg < L1+L2+L3, the force-detecting position of described hawser is positioned at the 3rd layer of described cylinder, the distance R g=d3 between the force-detecting position of described hawser and described centre of the drum; Work as L1+L2+ ... + Ln-1≤Lg < L1+L2+ ... during+Ln-1+Ln, the force-detecting position of described hawser is positioned at the n layer of described cylinder, the distance R g=dn between the force-detecting position of described hawser and described centre of the drum.
2. measuring method as claimed in claim 1, is characterized in that, describedly according to torque equilibrium equation, calculates described cable tension F, comprising:
According to formula F=(F2-F1) Rf/Rg calculates cable tension F, wherein, F1 represents the general pressure that described cylinder two stands left end causes due to described cable tension, F2 represents the general pressure that described cylinder two stands right-hand member causes due to described cable tension, and Rf represents the distance of described F1HeF2Dao centre of the drum.
3. a device of realizing method described in claim 1, comprise: cylinder and support, described cylinder two ends are rack-mount, bottom, described cylinder two ends is pressed with respectively sensor, it is characterized in that, also comprise main control unit, the rotating shaft of described cylinder is provided with for detecting in real time the aperture instrument of cylinder stroke, and this aperture instrument and described sensor are electrically connected to described main control unit respectively.
4. device as claimed in claim 3, is characterized in that, described main control unit comprises programmable logic controller (PLC).
5. device as claimed in claim 3, is characterized in that, described sensor is load sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210184092.4A CN102706499B (en) | 2012-06-05 | 2012-06-05 | Cable tension measurement method and device thereof for vertically downward unwinding type winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210184092.4A CN102706499B (en) | 2012-06-05 | 2012-06-05 | Cable tension measurement method and device thereof for vertically downward unwinding type winch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102706499A CN102706499A (en) | 2012-10-03 |
| CN102706499B true CN102706499B (en) | 2014-04-02 |
Family
ID=46899444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210184092.4A Active CN102706499B (en) | 2012-06-05 | 2012-06-05 | Cable tension measurement method and device thereof for vertically downward unwinding type winch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102706499B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111655606A (en) * | 2018-01-05 | 2020-09-11 | 安全工业责任有限公司 | Endless cable winch |
| CN111114692B (en) * | 2019-12-18 | 2021-08-06 | 中国船舶重工集团有限公司第七一0研究所 | Winch towing cable tension measurement driving mechanism |
| CN111256546B (en) * | 2020-01-23 | 2022-08-09 | 西安现代控制技术研究所 | Ground test system for dynamic performance of towing type secondary detonation cloud blasting bomb cable-releasing device |
| CN112861310B (en) * | 2020-12-31 | 2022-02-08 | 西南交通大学 | Method and system for measuring tension of elastic sling of contact net |
| CN116498085B (en) * | 2023-06-21 | 2023-09-12 | 福州大学 | UHPC reinforced concrete filled steel tubular column pouring device and method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6901818B1 (en) * | 2002-12-05 | 2005-06-07 | Maxwell C. Cheung | Tension measuring device for mooring line |
| CN101476954A (en) * | 2008-11-13 | 2009-07-08 | 山西省电力公司晋中供电分公司 | Automatic detection apparatus for rope pull |
| CN101769806A (en) * | 2008-12-30 | 2010-07-07 | 同济大学 | Method for measuring and calculating pulling force of positioning anchor winch of floating crane during offshore operation |
| CN102062660A (en) * | 2010-12-13 | 2011-05-18 | 天津工程机械研究院 | Device for measuring tension of winch cable and measuring method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004205432A (en) * | 2002-12-26 | 2004-07-22 | Matsushita Electric Ind Co Ltd | Cord-like pressure sensor input device |
-
2012
- 2012-06-05 CN CN201210184092.4A patent/CN102706499B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6901818B1 (en) * | 2002-12-05 | 2005-06-07 | Maxwell C. Cheung | Tension measuring device for mooring line |
| CN101476954A (en) * | 2008-11-13 | 2009-07-08 | 山西省电力公司晋中供电分公司 | Automatic detection apparatus for rope pull |
| CN101769806A (en) * | 2008-12-30 | 2010-07-07 | 同济大学 | Method for measuring and calculating pulling force of positioning anchor winch of floating crane during offshore operation |
| CN102062660A (en) * | 2010-12-13 | 2011-05-18 | 天津工程机械研究院 | Device for measuring tension of winch cable and measuring method thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2004-205432A 2007.07.22 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102706499A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102706499B (en) | Cable tension measurement method and device thereof for vertically downward unwinding type winch | |
| CN106289454B (en) | Liquid level meter measuring ruler and liquid level meter calibration method applying same | |
| CN211523169U (en) | Static sounding probe | |
| CN102374854A (en) | Cable length monitoring device | |
| CN206248252U (en) | A kind of anchor pole axial direction dynamometer | |
| CN103673959A (en) | Method, device and system for detecting number of wound/unwound steel wire ropes of winding drum and engineering machine | |
| KR101382143B1 (en) | Automated spring stiffness measuring device | |
| CN205132800U (en) | Elevator no -load equilibrium coefficient detection device | |
| CN205785663U (en) | A kind of continuous belt steel processes line tension instrument quick checking device | |
| CN202533063U (en) | Novel wire measuring instrument | |
| CN202252811U (en) | Detection mechanism for rubber diaphragm gas chamber piston leveling device | |
| CN209524930U (en) | A kind of displacement sensor for pull rope calibrating installation | |
| CN204313801U (en) | Laser high magnetic steel silk rope line flaw detection system | |
| CN202974770U (en) | Young modulus measurer | |
| CN1916564B (en) | Method and equipment for measuring increment of circumferential arc length in columned sample | |
| CN211717686U (en) | On-line detection device for tension of metal wire rope | |
| CN207395602U (en) | A kind of mandrel dimension control equipment | |
| CN209432345U (en) | A kind of detecting platform for dynamometer calibrating | |
| CN106495044B (en) | Groove skipping of steel rope while detection method and detection device | |
| CN104931721B (en) | A kind of linear velocity measurement apparatus of capstan winch | |
| CN201653339U (en) | External thread detector of taper thread | |
| CN204849178U (en) | Small traction force detection device of weaving roving silver lap | |
| CN219798322U (en) | Measuring device for building engineering detects | |
| CN204831225U (en) | Tower container straight line measuring device | |
| CN210662337U (en) | Detection device for urban pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |