CN112479071A - Device for automatically detecting tensioning degree of cable and control method thereof - Google Patents
Device for automatically detecting tensioning degree of cable and control method thereof Download PDFInfo
- Publication number
- CN112479071A CN112479071A CN202011265536.8A CN202011265536A CN112479071A CN 112479071 A CN112479071 A CN 112479071A CN 202011265536 A CN202011265536 A CN 202011265536A CN 112479071 A CN112479071 A CN 112479071A
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- Prior art keywords
- cable
- nylon wheel
- current
- tensioning
- pressing part
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
- B66D1/58—Safety gear responsive to excess of load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/01—Winches, capstans or pivots
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention discloses a device for automatically detecting the tensioning degree of a cable and a control method thereof, wherein the device comprises a tensioning device, the tensioning device comprises an electric push rod, a pressing part and a fixed support, when the cable is retracted or released, the cable pressing part applies fixed force between traction winches in the direction vertical to the cable, the current cable tightness is judged by measuring the change of the force on the pressing part, if the force applied on the cable is reduced, the cable is loosened, the pressing part is pressed downwards, if the force on the cable is over-limited, the cable is over-tensioned, the pressing part is lifted, and the cable is ensured to be in a proper tensioning state; when the pressing distance exceeds the limit, the system alarms and stops, and manual tensioning is carried out; the invention effectively prevents the problems of rope cutting and slipping caused by excessive looseness of the cable in the traditional traction winch retracting process.
Description
Technical Field
The invention relates to the technical field of traction winches, in particular to a device for automatically detecting the tensioning degree of a cable and a control method thereof.
Background
The traction winch is a device for taking charge of retracting and releasing heavy objects and reducing the tension of a mooring rope to the maximum tension borne by a cable storage system, and is stable in transmission, tidy in cable arrangement of the cable storage system and capable of protecting the cable storage system, so that the traction winch is widely applied to various fields of buildings, hydraulic engineering, forestry, mines, wharfs and the like.
At present, in the process of winding and unwinding of a traditional traction winch, especially in an ocean operation environment, due to the influence of factors such as sea waves and strong wind, a mooring rope is usually in an excessively loose and tensioning alternate state in the winding and unwinding process of the traction winch, the real-time tensioning state of the current mooring rope cannot be determined, the current mooring rope can only be checked manually, the operation of the traction winch in the loose or tensioning state of the mooring rope can cause great damage to the mooring rope, the mooring rope slips and cuts the rope in the traction winch under the loose condition, and equipment is damaged. Therefore, it is desired to solve the above problems.
Disclosure of Invention
Aiming at overcoming the technical problems and the defects existing in the prior art, the invention provides the device for automatically detecting the tensioning degree of the cable and the control method thereof. In order to achieve the purpose, the technical scheme adopted by the invention for achieving the purpose is as follows: the device comprises a tensioning device, wherein the tensioning device is used for detecting the tensioning degree of a cable of a traction winch and ensuring the tensioning of the cable, the tensioning device comprises an electric push rod, a pressing part, a tension sensor, a flange plate, a distance sensor and a fixed support, and the tension sensor penetrates through a wheel shaft of the pressing part, is fixed on the flange plate and is connected with the electric push rod.
The further improvement is that the pressing part comprises a nylon wheel and tapered roller bearings which are symmetrically arranged on a wheel shaft of the pressing part.
The further improvement is that the electric push rod is in an extending state in an initial state, two working modes, namely a manual working mode and an automatic working mode, are provided, the mode switching is carried out through the knob switch, the stretching and retracting are controlled by the stretching knob switch in the manual state, and if the electric push rod is in the automatic state, the electric push rod automatically retracts to a preset position when the retraction system is started.
In a further improvement, the flange is arranged at the upper end of the fixed support.
The system is further improved in that the system further comprises a PLC, and the PLC reads the numerical value and gives a next instruction to the system.
The scheme also discloses a control method of the device for automatically detecting the tensioning degree of the cable rope, which is characterized in that when the winch is started and the retracting system is started, the electric push rod retracts, the pressing part applies initial pressure in the vertical direction of the cable rope between the two winches of the traction winch, when the cable rope is retracted or released, the PLC reads the numerical value of the current tension sensor, and if the radial force born by the nylon wheel of the current pressing part is judged to be the initial pressure value, the tensioning device is not moved;
if the radial pressure born by the current nylon wheel is judged to be not within 0-100N, the current position of the tensioning device is judged, if the radial pressure born by the current nylon wheel is judged to be not within 0-100N, the tensioning device is alarmed to stop the machine if the radial pressure born by the tensioning device is in the initial position, if the radial pressure born by the current nylon wheel is not in the initial position, the nylon wheel moves upwards by 1cm, then the radial pressure born by the current nylon wheel is judged again, if the radial pressure born by the current nylon wheel is equal to the initial pressure value, the current position of the nylon;
if the radial pressure born by the current nylon wheel is judged to be 0-100N, the electric push rod drives the pressing part to move downwards by 1cm, the PLC reads the total descending displacement of the nylon wheel measured by the current distance sensor, if the total descending displacement exceeds 20cm, the system gives an alarm to stop the vehicle, if the total descending displacement does not exceed 20cm, the system judges the pressure value born by the current nylon wheel, if the pressure value is the initial pressure value, the current position is kept, if the pressure value is not the initial pressure value, the actions are repeated until the pressure born by the nylon wheel is the initial pressure value.
The further improvement is that in the process of adjusting the tensioning degree of the cable, the pressing part descends, the distance sensor detects that the downward pressing displacement of the cable is out of limit, the winch system gives an alarm to stop, and the cable is tensioned manually.
Compared with the prior art, the invention has the beneficial effects that compared with the traditional condition that the tightness state of the cable in the traction winch cannot be mastered and can only be checked manually and can only be stopped and adjusted manually in an over-loose or over-tensioned state, the scheme can detect the tightness condition of the cable in the traction winch in real time, automatically tension the cable in the over-loose condition, relax and early warn in the over-tensioned condition, and prevent the phenomena of rope cutting, slipping and the like in the winding and unwinding processes of the cable.
Drawings
FIG. 1 is a front view of the tensioner of the present invention;
FIG. 2 is a top view of the tensioner of the present invention;
FIG. 3 is a schematic flow chart of the process of the present invention;
the device comprises a tensioning device 1, an electric push rod 2, a pressing part 3, a tension sensor 4, a flange plate 5, a distance sensor 6 and a fixed support 7.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely illustrative of some, but not all, of the presently preferred embodiments of the invention, and that the present invention is best described in the specification. This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present disclosure is set forth in order to provide a more thorough understanding thereof. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Embodiment, referring to fig. 1 and 2, an apparatus for automatically detecting the tension of a cable comprises a tensioning apparatus 1, wherein the tensioning apparatus 1 is used for detecting the tension of the cable of a traction winch and ensuring the tension of the cable, the tensioning apparatus 1 comprises an electric push rod 2, a pressing part 3, a tension sensor 4, a flange 5, a distance sensor 6 and a fixing bracket 7, and the tension sensor 4 passes through an axle of the pressing part 3 and is fixed on the flange 5 and is connected with the electric push rod 2. The pressing part 3 comprises a nylon wheel and tapered roller bearings symmetrically arranged on a wheel shaft of the pressing part 3, the electric push rod 2 is in an extending state in an initial state, two working modes, namely a manual working mode and an automatic working mode, mode switching is carried out through a knob switch, stretching and retracting are controlled by a stretching knob switch in the manual state, and if the electric push rod is in the automatic state, the electric push rod 2 automatically retracts to a preset position when the retraction system is started. When the retraction system is started, the electric push rod 2 retracts, and the pressing part 3 exerts fixed initial pressure on the vertical direction of the cable between the two winches of the traction winch.
The specific working mode of the device for automatically detecting the tensioning degree of the cable as shown in fig. 3 is as follows: when the winch is started, the pressing part 3 on the tensioning device applies 100N initial pressure in the vertical direction of a cable between two winches of the traction winch; when the cable is drawn, the PLC reads the numerical value of the current tension sensor 4, and if the radial force borne by the nylon wheel of the current pressing part 3 is judged to be 100N, the tensioning device 1 is not moved;
if the radial pressure born by the current nylon wheel is judged to be not 0-100N, the current position of the tensioning device 1 is judged, if the radial pressure born by the current nylon wheel is judged to be not 0-100N, the alarm is given out and the machine is stopped, if the radial pressure born by the current nylon wheel is not at the initial position, the nylon wheel moves upwards by 1cm, then the radial pressure born by the current nylon wheel is judged again, if the radial pressure born by the current nylon wheel is equal to 100N, the current position of the nylon wheel is kept, and if the radial pressure born by the current nylon wheel is not equal to;
if the radial pressure born by the current nylon wheel is judged to be 0-100N, the electric push rod 2 drives the pressing part 3 to move downwards by 1cm, then the PLC reads the total descending displacement of the nylon wheel measured by the current distance sensor 6, if the total descending displacement exceeds 20cm, the system gives an alarm to stop the vehicle, if the total descending displacement does not exceed 20cm, the system judges the pressure value born by the current nylon wheel, if the pressure value is 100N, the current position is kept, if the total descending displacement is not 100N, the actions are repeated until the pressure born by the nylon wheel is the initial pressure value;
during cable laying, the PLC reads the numerical value of the current tension sensor 4, and if the radial force borne by the nylon wheel of the current pressing part 3 is judged to be 100N, the tensioning device 1 is not moved;
if the radial pressure born by the current nylon wheel is judged to be not within 0-100N, the current position of the tensioning device 11 is judged, if the radial pressure born by the current nylon wheel is judged to be not within 0-100N, the nylon wheel is alarmed to stop the machine, if the radial pressure born by the current nylon wheel is not in the initial position, the nylon wheel moves upwards by 1cm, then the radial pressure born by the current nylon wheel is judged again, if the radial pressure born by the current nylon wheel is equal to 100N, the current position of the nylon wheel is kept, and if the radial pressure born by the current nylon wheel is not equal;
if the radial pressure born by the current nylon wheel is judged to be 0-100N, the electric push rod 2 drives the pressing part 3 to move downwards by 1cm, then the PLC reads the total descending displacement of the nylon wheel measured by the current distance sensor 6, if the total descending displacement exceeds 20cm, the system gives an alarm to stop the vehicle, if the total descending displacement does not exceed 20cm, the system judges the pressure value born by the current nylon wheel, if the pressure value is 100N, the current position is kept, if the total descending displacement is not 100N, the actions are repeated until the pressure born by the nylon wheel is the initial pressure value;
in the process of adjusting the tensioning degree of the cable, after the pressing part 3 descends to 20cm, the distance sensor 6 detects that the downward pressing displacement of the cable is out of limit, and the winch system gives an alarm to stop to manually tension the cable.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent changes may be made in some of the features of the embodiments described above. All equivalent structures made by using the content of the specification of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.
Claims (7)
1. The device for automatically detecting the tensioning degree of the cable rope comprises a tensioning device (1), wherein the tensioning device (1) is used for detecting the tensioning degree of the cable rope of a traction winch and ensuring the tensioning of the cable rope, the tensioning device (1) comprises an electric push rod (2), a pressing part (3), a tension sensor (4), a flange plate (5), a distance sensor (6) and a fixed support (7), and the tension sensor (4) penetrates through a wheel shaft of the pressing part (3), is fixed on the flange plate (5) and is connected with the electric push rod (2).
2. An automatic cable tensioning device according to claim 1, characterized in that the pressing member (3) comprises a nylon wheel and tapered roller bearings symmetrically placed on the axle of the pressing member (3).
3. The device for automatically detecting the tensioning degree of the cable as claimed in claim 2, wherein the electric push rod (2) is in an extended state in an initial state, and has two working modes of manual operation and automatic operation, the mode switching is performed through a knob switch, the stretching operation is controlled by a stretching knob switch in the manual state, and the electric push rod (2) is automatically retracted to a preset position when the retraction system is started if the retraction system is in the automatic state.
4. A device for automatically detecting the degree of tensioning of a cable as claimed in claim 3, characterized in that said flange (5) is arranged at the upper end of said fixed support (7).
5. The apparatus for automatically detecting the tension of a rope as claimed in claim 4, further comprising a PLC for reading the values and making a next command.
6. The control method of the device for automatically detecting the tensioning degree of the cable is characterized in that when the device is started, when a retraction system is started, the electric push rod (2) retracts, the pressing part (3) applies initial pressure in the vertical direction of the cable between two winches of a traction winch, when the cable is retracted or released, a PLC reads the numerical value of the current tension sensor (4), and if the radial force borne by a nylon wheel of the current pressing part (3) is judged to be the initial pressure value, the tensioning device (1) is not moved;
if the radial pressure born by the current nylon wheel is judged to be not within 0-100N, the current position of the tensioning device (1) is judged, if the radial pressure born by the current nylon wheel is judged to be not within 0-100N, the nylon wheel is alarmed to stop the machine if the radial pressure born by the tensioning device is at the initial position, if the radial pressure born by the current nylon wheel is not at the initial position, the nylon wheel moves upwards by 1cm, then the radial pressure born by the current nylon wheel is judged again, if the radial pressure born by the current nylon wheel is equal to the initial pressure value, the current position of the nylon wheel is kept;
if the radial pressure born by the current nylon wheel is judged to be 0-100N, the electric push rod (2) drives the pressing part (3) to move downwards by 1cm, the PLC reads the total descending displacement of the nylon wheel measured by the current distance sensor (6), if the total descending displacement exceeds 20cm, the system gives an alarm to stop the vehicle, if the total descending displacement does not exceed 20cm, the system judges the pressure value born by the current nylon wheel, if the pressure value is the initial pressure value, the current position is kept, and if the pressure value is not the initial pressure value, the actions are repeated until the pressure born by the nylon wheel is the initial pressure value.
7. The method for controlling an apparatus for automatically detecting the tension of a cable as claimed in claim 6, wherein the tension apparatus (1) is adapted to adjust the tension of the cable in such a manner that the pressing member (3) is lowered, the distance sensor (6) detects an overrun of the cable pressing displacement, the winch system is stopped to alarm, and the cable is manually tensioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265536.8A CN112479071A (en) | 2020-11-13 | 2020-11-13 | Device for automatically detecting tensioning degree of cable and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265536.8A CN112479071A (en) | 2020-11-13 | 2020-11-13 | Device for automatically detecting tensioning degree of cable and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112479071A true CN112479071A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011265536.8A Pending CN112479071A (en) | 2020-11-13 | 2020-11-13 | Device for automatically detecting tensioning degree of cable and control method thereof |
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| CN (1) | CN112479071A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852902A (en) * | 2022-05-24 | 2022-08-05 | 上海中车艾森迪海洋装备有限公司 | Automatic cable tensioning device and method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB887149A (en) * | 1958-10-07 | 1962-01-17 | Istitut Fuer Schiffbau Rostock | Automatic control of electrically driven winches |
| CN2841589Y (en) * | 2005-09-27 | 2006-11-29 | 中国矿业大学 | Numerical control winch and oil cylinder type hydraulic tensioning device |
| CN202471330U (en) * | 2012-03-08 | 2012-10-03 | 罗凤利 | Tension dynamic measurer |
| CN102826475A (en) * | 2012-09-10 | 2012-12-19 | 江苏科技大学 | Horizontal type inclined cable-tension attenuating winch |
| CN103434893A (en) * | 2013-08-30 | 2013-12-11 | 洛阳市明伟机械科技有限公司 | Functional pulley block for bundle-shaped rolling machine |
| CN103964134A (en) * | 2014-05-22 | 2014-08-06 | 成都海凌达机械有限公司 | Regulating mechanism for stably regulating tension of carrier roller belt |
| CN206203625U (en) * | 2016-12-05 | 2017-05-31 | 立达博仕电梯（苏州）有限公司 | A kind of elevator wire rope swelling device |
| CN107640669A (en) * | 2017-09-06 | 2018-01-30 | 中国电子科技集团公司第三十八研究所 | A kind of adjustable hawser draw off gear of cornerite |
| CN108254117A (en) * | 2017-12-20 | 2018-07-06 | 龙口矿业集团有限公司 | A kind of device for detecting SQ-1200 endless rope series tractor steel wire rope initial tension |
| CN110371778A (en) * | 2019-07-19 | 2019-10-25 | 安徽电缆股份有限公司 | A kind of cable processing traction winding device |
| CN211444829U (en) * | 2019-12-02 | 2020-09-08 | 山东丰汇设备技术有限公司 | Pull-type trolley steel wire rope tensioning, rope loosening and blockage detection device |
-
2020
- 2020-11-13 CN CN202011265536.8A patent/CN112479071A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB887149A (en) * | 1958-10-07 | 1962-01-17 | Istitut Fuer Schiffbau Rostock | Automatic control of electrically driven winches |
| CN2841589Y (en) * | 2005-09-27 | 2006-11-29 | 中国矿业大学 | Numerical control winch and oil cylinder type hydraulic tensioning device |
| CN202471330U (en) * | 2012-03-08 | 2012-10-03 | 罗凤利 | Tension dynamic measurer |
| CN102826475A (en) * | 2012-09-10 | 2012-12-19 | 江苏科技大学 | Horizontal type inclined cable-tension attenuating winch |
| CN103434893A (en) * | 2013-08-30 | 2013-12-11 | 洛阳市明伟机械科技有限公司 | Functional pulley block for bundle-shaped rolling machine |
| CN103964134A (en) * | 2014-05-22 | 2014-08-06 | 成都海凌达机械有限公司 | Regulating mechanism for stably regulating tension of carrier roller belt |
| CN206203625U (en) * | 2016-12-05 | 2017-05-31 | 立达博仕电梯（苏州）有限公司 | A kind of elevator wire rope swelling device |
| CN107640669A (en) * | 2017-09-06 | 2018-01-30 | 中国电子科技集团公司第三十八研究所 | A kind of adjustable hawser draw off gear of cornerite |
| CN108254117A (en) * | 2017-12-20 | 2018-07-06 | 龙口矿业集团有限公司 | A kind of device for detecting SQ-1200 endless rope series tractor steel wire rope initial tension |
| CN110371778A (en) * | 2019-07-19 | 2019-10-25 | 安徽电缆股份有限公司 | A kind of cable processing traction winding device |
| CN211444829U (en) * | 2019-12-02 | 2020-09-08 | 山东丰汇设备技术有限公司 | Pull-type trolley steel wire rope tensioning, rope loosening and blockage detection device |
Non-Patent Citations (2)
| Title |
|---|
| 林河平等: "一种基于张力控制实现电缆收放的绞车", 《水雷战与舰船防护》 * |
| 鄢华林等: "液压高速拖曳试验系统设计", 《液压与气动》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852902A (en) * | 2022-05-24 | 2022-08-05 | 上海中车艾森迪海洋装备有限公司 | Automatic cable tensioning device and method |
| CN114852902B (en) * | 2022-05-24 | 2023-11-17 | 上海中车艾森迪海洋装备有限公司 | Automatic cable tensioning device and method |
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Application publication date: 20210312 |
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