CN102706499A - 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
- CN102706499A CN102706499A CN2012101840924A CN201210184092A CN102706499A CN 102706499 A CN102706499 A CN 102706499A CN 2012101840924 A CN2012101840924 A CN 2012101840924A CN 201210184092 A CN201210184092 A CN 201210184092A CN 102706499 A CN102706499 A CN 102706499A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- hawser
- force
- 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.)
- Granted
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
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 the 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 increasingly high that the operating load of winch requires, thereby cause the deadweight of winch and volume increasing, and progressively to open upper deck transfer, this rope outlet direction that just requires winch is for vertically downward for mounting arrangements.
At present, the method for measurement winch cable tension generally has following two kinds:
A kind of is the direct contact type measuring method, and this direct contact type measuring method is that measuring sensor is attached directly on the hawser, relies on hawser that the extruding of sensitive element is come the measuring cable rope tension; Another kind is an indirect touch measuring method, and this indirect touch measuring method is to measure the parts relevant with cylinder, then the related data that records is converted into cable tension.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention:
First method is used for the hawser of wire quality more, but also inapplicable to the hawser of other soft material, versatility is relatively poor; Second method is when being converted into cable tension with the related data that records; Can the force-detecting position of hawser be taken as 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 is bigger to the variable in distance amount of centre of the drum in the use; So cause measurement result to have bigger error, measure inaccurate.
Summary of the invention
In order to measure the winch cable tension accurately, and improve the versatility of measuring, the embodiment of the invention provides a kind of cable tension measuring method and device thereof of the winch of rope stretching formula vertically downward.Said technical scheme is following:
A kind of cable tension measuring method of the winch of rope stretching formula vertically downward comprises:
Emit the length L c of hawser when measuring the winch real work;
According to the storage rope amount L on said length L c and the said winch, judge that the force-detecting position of said hawser is positioned on which layer of said cylinder, and confirm the force-detecting position of said hawser and the distance R g between the said centre of the drum;
Calculate said cable tension F according to torque equilibrium equation.
Particularly, the force-detecting position of the said hawser of said judgement is positioned on which layer of said cylinder, and confirms the force-detecting position of said hawser and the distance R g between the said centre of the drum, comprising:
Calculate the reelable hawser length overall of the n layer Ln of said cylinder according to formula Ln=(B/d) 2 π dn, wherein, B representes the cylinder width, and d representes cable diameter, and dn representes the hawser center of n layer and the distance between the centre of the drum;
Calculate the cable length Lg=L-Lc that twines on the said cylinder;
When 0≤Lg＜L1, the force-detecting position of said hawser is positioned at the ground floor of said cylinder, then the distance R g=d1 between the force-detecting position of said hawser and the said centre of the drum; When L1≤Lg＜L1+L2, the force-detecting position of said hawser is positioned at the second layer of said cylinder, then the distance R g=d2 between the force-detecting position of said hawser and the said centre of the drum; When L1+L2≤Lg＜L1+L2+L3, the force-detecting position of said hawser is positioned at the 3rd layer of said cylinder, then the distance R g=d3 between the force-detecting position of said hawser and the said centre of the drum; Work as L1+L2+ ... + Ln-1≤Lg＜L1+L2+ ... During+Ln-1+Ln, the force-detecting position of said hawser is positioned at the n layer of said cylinder, then the distance R g=dn between the force-detecting position of said hawser and the said centre of the drum.
More specifically, said dn=[D+ (2n-1) d]/2, wherein, D representes diameter of cylinder, d representes cable diameter.
Further, saidly calculate said cable tension F, comprising according to torque equilibrium equation:
According to formula F=(F2-F1) Rf/Rg calculates cable tension F; Wherein, F1 representes the general pressure that said cylinder two stands left end causes owing to said cable tension; F2 representes the general pressure that said cylinder two stands right-hand member causes owing to said cable tension, and Rf representes said F1 and the F2 distance to centre of the drum.
A kind of cable tension measurement mechanism of the winch of rope stretching formula vertically downward; Comprise: cylinder and support; Said cylinder two ends are rack-mount, and bottom, said cylinder two ends is pressed with sensor respectively, also comprises main control unit; The rotating shaft of said cylinder is provided with the aperture appearance that is used for detecting in real time the cylinder stroke, and this aperture appearance and said sensor are electrically connected with said main control unit respectively.
Particularly, said main control unit comprises programmable logic controller (PLC).
Particularly, said sensor is a load sensor.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: through real-time detection and the force-detecting position of calculating hawser and the actual range between the 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 the centre of the drum through the aperture appearance that adds and main control unit, and can accurately draw the real-time tension force of hawser through the computing of main control unit, measurement result is more accurate, and is simple in structure, easy to use.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
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 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 invention 2;
Fig. 3 is the side-looking simplified structure synoptic diagram of Fig. 1.
Wherein, support 1, cylinder 2, main control unit 3, sensor 4, aperture appearance 5, hawser 6.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment 1
The embodiment of the invention provides a kind of cable tension measuring method of the winch of rope stretching formula vertically downward, and referring to Fig. 1, this method comprises:
Step 101: calculate the hawser center and the distance between the centre of the drum: the dn=[D+ (2n-1) d]/2 of the n layer of cylinder, wherein, D representes diameter of cylinder, and d representes cable diameter.
Step 102: according to the reelable hawser length overall of the n layer Ln of formula Ln=(B/d) 2 π dn calculating cylinder, wherein, B representes the cylinder width.
Step 103: emit the length L c of hawser when measuring winch work in real time.
Particularly, can adopt the aperture appearance to measure.
Step 104: according to the storage rope amount L on length L c that records and the winch, judge that the force-detecting position of hawser is positioned on which layer of cylinder, and the force-detecting position of definite hawser and the distance R g between the centre of the drum.
Particularly, this step comprises:
Calculate the cable length Lg=L-Lc that twines on the cylinder;
When 0≤Lg＜L1, the force-detecting position of said hawser is positioned at the ground floor of said cylinder, then the distance R g=d1 between the force-detecting position of said hawser and the said centre of the drum; When L1≤Lg＜L1+L2, the force-detecting position of said hawser is positioned at the second layer of said cylinder, then the distance R g=d2 between the force-detecting position of said hawser and the said centre of the drum; When L1+L2≤Lg＜L1+L2+L3, the force-detecting position of said hawser is positioned at the 3rd layer of said cylinder, then the distance R g=d3 between the force-detecting position of said hawser and the said centre of the drum; Work as L1+L2+ ... + Ln-1≤Lg＜L1+L2+ ... During+Ln-1+Ln, the force-detecting position of said hawser is positioned at the n layer of said cylinder, then the distance R g=dn between the force-detecting position of said hawser and the said centre of the drum.
Step 105: calculate said 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 representes the general pressure that cylinder two stands left end causes owing to cable tension, and F2 representes the general pressure that cylinder two stands right-hand member causes owing to cable tension, and Rf representes F1 and the F2 distance to centre of the drum.
Need to prove that step 101 and step 102 can be carried out with step 103 or step 104 simultaneously, do not limit its sequencing at this, be configured in the main control unit after it can also calculate according to actual conditions in advance and (see embodiment 2).
The embodiment of the invention has effectively improved the accuracy that cable tension is measured through detecting in real time and calculating the force-detecting position of hawser and the actual range between the centre of the drum.
The embodiment of the 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, and cylinder 2 two ends are installed on the support 1, and bottom, cylinder 2 two ends is pressed with sensor 4 respectively; The rotating shaft of cylinder 2 is provided with the aperture appearance 5 that is used for detecting in real time cylinder 2 strokes, and this aperture appearance 5 is electrically connected with main control unit 3 respectively with sensor 4.Main control unit 3 comprises programmable logic controller (PLC), is used to carry out above-mentioned all computings and judgement.Sensor 4 is a load sensor, is used for detecting respectively the general pressure (F1 and F2) that cylinder 2 two stands two ends cause owing to hawser 6 tension force.
During concrete the use: at first, with cylinder 2 diameters, cylinder 2 width, parameters such as hawser 6 diameters input main control unit 3; Then; Measure in real time according to actual needs; The length L c that emits hawser 6 when the winch that aperture appearance 5 will be measured is in real time worked is transferred to main control unit 3; Simultaneously, the general pressure (F1 and F2) that causes owing to hawser 6 tension force of the cylinder 2 two stands two ends that will measure in real time of sensor 4 is transferred to main control unit 3; At last, main control unit 3 shows through the real-time tension force that calculates hawser 6.
The real-time detection that the embodiment of the invention has realized the actual range between hawser 6 force-detecting positions and cylinder 2 centers through the aperture appearance 5 that adds and main control unit 3; And can accurately draw the real-time tension force of hawser 6 through the computing of main control unit 3; Measurement result is more accurate, and is simple in structure, easy to use.
More than be merely preferred embodiment of the present invention, or not all within spirit of the present invention and principle in order to restriction the present invention, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the cable tension measuring method of the winch of rope stretching formula vertically downward is characterized in that, comprising:
Emit the length L c of hawser when measuring the winch real work;
According to the storage rope amount L on said length L c and the said winch, judge that the force-detecting position of said hawser is positioned on which layer of said cylinder, and confirm the force-detecting position of said hawser and the distance R g between the said centre of the drum;
Calculate said cable tension F according to torque equilibrium equation.
2. measuring method as claimed in claim 1 is characterized in that, the force-detecting position of the said hawser of said judgement is positioned on which layer of said cylinder, and confirms the force-detecting position of said hawser and the distance R g between the said centre of the drum, comprising:
Calculate the reelable hawser length overall of the n layer Ln of said cylinder according to formula Ln=(B/d) 2 π dn, wherein, B representes the cylinder width, and d representes cable diameter, and dn representes the hawser center of n layer and the distance between the centre of the drum;
Calculate the cable length Lg=L-Lc that twines on the said cylinder;
When 0≤Lg＜L1, the force-detecting position of said hawser is positioned at the ground floor of said cylinder, then the distance R g=d1 between the force-detecting position of said hawser and the said centre of the drum; When L1≤Lg＜L1+L2, the force-detecting position of said hawser is positioned at the second layer of said cylinder, then the distance R g=d2 between the force-detecting position of said hawser and the said centre of the drum; When L1+L2≤Lg＜L1+L2+L3, the force-detecting position of said hawser is positioned at the 3rd layer of said cylinder, then the distance R g=d3 between the force-detecting position of said hawser and the said centre of the drum; Work as L1+L2+ ... + Ln-1≤Lg＜L1+L2+ ... During+Ln-1+Ln, the force-detecting position of said hawser is positioned at the n layer of said cylinder, then the distance R g=dn between the force-detecting position of said hawser and the said centre of the drum.
3. measuring method as claimed in claim 2 is characterized in that, said dn=[D+ (2n-1) d]/2, and wherein, D representes diameter of cylinder, d representes cable diameter.
4. according to claim 1 or claim 2 measuring method is characterized in that, saidly calculates said cable tension F according to torque equilibrium equation, comprising:
According to formula F=(F2-F1) Rf/Rg calculates cable tension F; Wherein, F1 representes the general pressure that said cylinder two stands left end causes owing to said cable tension; F2 representes the general pressure that said cylinder two stands right-hand member causes owing to said cable tension, and Rf representes said F1 and the F2 distance to centre of the drum.
5. device of realizing the said method of claim 1; Comprise: cylinder and support, said cylinder two ends are rack-mount, and bottom, said cylinder two ends is pressed with sensor respectively; It is characterized in that; Also comprise main control unit, the rotating shaft of said cylinder is provided with the aperture appearance that is used for detecting in real time the cylinder stroke, and this aperture appearance and said sensor are electrically connected with said main control unit respectively.
6. device as claimed in claim 5 is characterized in that said main control unit comprises programmable logic controller (PLC).
7. device as claimed in claim 5 is characterized in that, said sensor is a 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 true CN102706499A (en) | 2012-10-03 |
| CN102706499B 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114692A (en) * | 2019-12-18 | 2020-05-08 | 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 |
| CN111256546A (en) * | 2020-01-23 | 2020-06-09 | 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 |
| CN111655606A (en) * | 2018-01-05 | 2020-09-11 | 安全工业责任有限公司 | Endless cable winch |
| CN112861310A (en) * | 2020-12-31 | 2021-05-28 | 西南交通大学 | Method and system for measuring tension of elastic sling of contact net |
| CN116498085A (en) * | 2023-06-21 | 2023-07-28 | 福州大学 | UHPC reinforced concrete filled steel tubular column pouring device and method thereof |
Citations (5)
| 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 |
| 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 |
-
2012
- 2012-06-05 CN CN201210184092.4A patent/CN102706499B/en active Active
Patent Citations (5)
| 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 |
| JP2004205432A (en) * | 2002-12-26 | 2004-07-22 | Matsushita Electric Ind Co Ltd | Cord-like pressure sensor input device |
| 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 |
Cited By (8)
| 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 |
| CN111114692A (en) * | 2019-12-18 | 2020-05-08 | 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 |
| CN111256546A (en) * | 2020-01-23 | 2020-06-09 | 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 |
| 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 |
| CN112861310A (en) * | 2020-12-31 | 2021-05-28 | 西南交通大学 | Method and system for measuring tension of elastic sling of contact net |
| 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 |
| CN116498085A (en) * | 2023-06-21 | 2023-07-28 | 福州大学 | UHPC reinforced concrete filled steel tubular column pouring device and method thereof |
| CN116498085B (en) * | 2023-06-21 | 2023-09-12 | 福州大学 | UHPC reinforced concrete filled steel tubular column pouring device and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102706499B (en) | 2014-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102706499B (en) | Cable tension measurement method and device thereof for vertically downward unwinding type winch | |
| CN104295288B (en) | petroleum drilling well depth measuring system and method | |
| EP1925918A3 (en) | Connection box for transmission of a signal | |
| CN204165686U (en) | A kind of three pulley tension sensors with the long measurement mechanism of rope | |
| KR101382143B1 (en) | Automated spring stiffness measuring device | |
| CN211523169U (en) | Static sounding probe | |
| CN103673959A (en) | Method, device and system for detecting winding/unwinding amount of reel steel wire rope and engineering machinery | |
| CN202533063U (en) | Novel wire measuring instrument | |
| CN204064532U (en) | A kind of elevator dragging wire rope tension measuring device | |
| JP4979475B2 (en) | Twisted wire residual torsion measuring device, stranded wire machine and stranded wire winder equipped therewith | |
| CN209524930U (en) | A kind of displacement sensor for pull rope calibrating installation | |
| CN203998767U (en) | Range finding is surveyed and is carried electronic cable hydraulic winch | |
| CN205749126U (en) | Extensometer method measure apparatus of youngs modulus | |
| CN1916564B (en) | Method and equipment for measuring increment of circumferential arc length in columned sample | |
| CN204649766U (en) | A kind of capstan winch parameter measuring apparatus | |
| CN107389250A (en) | Plastic pipe friction testing device | |
| CN207395602U (en) | A kind of mandrel dimension control equipment | |
| CN104931721B (en) | A kind of linear velocity measurement apparatus of capstan winch | |
| CN205620067U (en) | A two to force measuring device for scratch test instrument | |
| CN209432345U (en) | A kind of detecting platform for dynamometer calibrating | |
| CN204255776U (en) | A kind of reinforcing bar anti-bending strength detecting device | |
| CN207113804U (en) | A kind of measurement device of diameter based on all footpath chi principles | |
| CN105628527B (en) | A kind of self-balancing for scratch test instrument is replaceable to scrape head | |
| CN204310711U (en) | Be applied in the sensor construction in the test of tower machine weight | |
| CN203893838U (en) | Special-purpose strand deflection determinator for wire rope |
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 |