CN106546207A - The measuring method and system of cable winding radius - Google Patents
The measuring method and system of cable winding radius Download PDFInfo
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- CN106546207A CN106546207A CN201610121001.0A CN201610121001A CN106546207A CN 106546207 A CN106546207 A CN 106546207A CN 201610121001 A CN201610121001 A CN 201610121001A CN 106546207 A CN106546207 A CN 106546207A
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- 238000000034 method Methods 0.000 title claims abstract description 18
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- 230000005693 optoelectronics Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/10—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters
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Abstract
The invention discloses the measuring method and system of a kind of cable winding radius, are related to electric propulsion engineering truck field.Method therein includes：The calibration signal of collection cable winding radius；The detection reel actual rotation number of turns；Judge twisted and released of the cable state；According to the calculating benchmark value of the calibration signal amendment cable winding radius of cable winding radius；The reel actual rotation number of turns detected in time period according to calibration signal at adjacent two, per layer of cable of the amendment averagely winding number of turns；The reel actual rotation number of turns, per layer of the revised cable averagely winding number of turns and the cable size detected after calculating benchmark value, twisted and released of the cable state, amendment according to revised cable winding radius calculates cable winding radius.So as to accurately measure cable winding radius, cumulative error is eliminated.
Description
Technical Field
The invention relates to the field of electric traction engineering vehicles, in particular to a method and a system for measuring a cable winding radius.
Background
The electric underground scraper is mainly used for mine engineering and tunnel engineering, the power source of the electric underground scraper is supplied with power at high voltage, a cable needs to be dragged to travel in the working process, the cable needs to be wound and unwound synchronously with the vehicle speed, and the phenomena of loosening, breaking or violent throwing and the like are avoided. The cable winding radius is an important reference basis for implementing synchronous control of cable winding and unwinding and vehicle speed, and the detection precision directly influences the synchronization performance and even causes safety accidents, so that an effective means is needed for accurately measuring the cable winding radius.
Under the ideal condition, the cable is led out from the lower part of the reel, the cable is wound on the reel layer by layer, one layer of the cable is N circles, after one layer of the cable is fully wound, the cable is wound on the second layer, and the effective winding radius of the cable is increased along with the increase of the number of the layers of the cable. The number of turns of the reel is measured by an encoder mounted on the reel, and the total number of turns of the reel is divided by the theoretical number of turns of each layer, thereby converting into an effective cable winding radius.
However, after the electric underground scraper works for a period of time, the cable winding system generates accumulated errors in calculating the cable winding radius in the continuous cable winding and unwinding processes. Especially, when the phenomenon such as pressing rope, stinging rope appear in the cable for every layer of winding number of turns of cable deviates from theoretical value N circle, the long-term accumulation of this kind of deviation can seriously influence the tensioning degree control of cable, leads to the emergence of the indiscriminate rope phenomenon of roll up cable, influences cable life, even relates to the work safety of electronic underground scraper.
Disclosure of Invention
The invention aims to solve the technical problems that: how to accurately measure the winding radius of the cable and eliminate accumulated errors.
According to an aspect of an embodiment of the present invention, there is provided a method for measuring a winding radius of a cable, including: collecting a calibration signal of a cable winding radius; detecting the actual number of turns of the reel; judging the cable winding and unwinding state; correcting the calculation reference value of the cable winding radius according to the calibration signal of the cable winding radius; correcting the average winding turns of each layer of the cable according to the actual rotation turns of the reel detected in the time period of the two adjacent calibration signals; and calculating the cable winding radius according to the calculated reference value of the corrected cable winding radius, the cable winding and unwinding state, the actual number of turns of the reel detected after correction, the average number of turns of each layer of the corrected cable and the diameter of the cable.
In some embodiments, the calculation formula for calculating the cable winding radius is:
when the cable is in a cable-retracting state, a plus number is adopted in the formula; when the cable is in a cable laying state, a number-is adopted in the formula; wherein R is the calculated cable winding radius, RkFor a calculated reference value of the corrected cable winding radius, ZKFor actual number of turns of reel detected after correction, CKD is the cable diameter for the average number of windings per layer of the modified cable.
In some embodiments, correcting the calculated reference value of the cable winding radius according to the calibration signal of the cable winding radius includes: and when the on-off condition of the calibration signal of the cable winding radius accords with a preset rule, correcting the calculation reference value of the cable winding radius according to the position of the calibration device sending out the calibration signal.
In some embodiments, the calculating the reference value of the corrected cable winding radius includes: when the cable is collected, if the calibration signal is changed from on-off to continuous non-reception, the position of the calibration device sending the calibration signal is used as a calculation reference value of the winding radius of the cable; or, when the cable is unwound, if the calibration signal is changed from continuously not receiving the signal to being switched on and off, the position of the calibration device sending the calibration signal is used as a calculation reference value of the cable winding radius.
In some embodiments, the formula for calculating the average number of windings per layer of the modified cable is:
wherein, CKFor the corrected cable, average number of windings per layer, CKIs set to a theoretical value, ZTKAnd l is the radial distance between the two calibration devices which respectively send out the calibration signals at two adjacent positions before, and d is the diameter of the cable.
In some embodiments, the calibration signal of the cable winding radius is emitted by a calibration device arranged radially on the reel; and reading the actual rotation angle of the reel recorded by the encoder, and judging the cable winding and unwinding state according to the change condition of the actual rotation angle of the reel.
According to an aspect of an embodiment of the present invention, there is provided a cable winding radius measuring system including: a calibration device, an encoder and a controller; the controller is respectively connected with the calibrating device and the encoder, and the calibrating device is arranged along the radial direction of the reel; the calibration device inputs a calibration signal of the winding radius of the cable to the controller, the encoder inputs the actual number of turns of the reel and the winding and unwinding state of the cable to the controller, and the controller receives information input by the calibration device and the encoder and outputs the winding radius of the cable.
In some embodiments, the calibration device is an optoelectronic transmitting and receiving device.
In some embodiments, the number of calibration devices is set according to the calibration accuracy.
In some embodiments, the calibration device is provided in plurality and is uniformly arranged along the radial direction of the reel.
In some embodiments, the controller comprises: the reference value correcting unit is used for correcting the calculation reference value of the cable winding radius according to the calibration signal of the cable winding radius; the average winding turn number correcting unit is used for correcting the average winding turn number of each layer of the cable according to the actual rotation turn number of the reel detected in the time period of the two adjacent calibration signals; and the winding radius calculating unit is used for calculating the winding radius of the cable according to the calculated reference value of the winding radius of the corrected cable, the cable winding and unwinding state, the actual number of turns of the reel detected after correction, the average number of turns of each layer of the corrected cable and the diameter of the cable.
In some embodiments, the winding radius calculation unit calculates the winding radius of the cable by the following calculation formula:
when the cable is in a cable-retracting state, a plus number is adopted in the formula; when the cable is in a cable laying state, a number-is adopted in the formula; wherein R is the calculated cable winding radius, RkFor a calculated reference value of the corrected cable winding radius, ZKFor actual number of turns of reel detected after correction, CKD is the cable diameter for the average number of windings per layer of the modified cable.
In some embodiments, the reference value correction unit is configured to: and when the on-off condition of the calibration signal of the cable winding radius accords with a preset rule, correcting the calculation reference value of the cable winding radius according to the position of the calibration device sending out the calibration signal.
In some embodiments, the reference value correction unit is configured to: when the cable is collected, if the calibration signal is changed from on-off to continuous non-reception, the position of the calibration device sending the calibration signal is used as a calculation reference value of the winding radius of the cable; or, when the cable is unwound, if the calibration signal is changed from continuously not receiving the signal to being switched on and off, the position of the calibration device sending the calibration signal is used as a calculation reference value of the cable winding radius.
In some embodiments, the average winding number correction unit is used for correcting the average winding number of each layer of the cable according to the following formula:
wherein, CKFor the corrected cable, average number of windings per layer, CKIs set to a theoretical value, ZTKAnd l is the radial distance between the two calibration devices which respectively send out the calibration signals at two adjacent positions before, and d is the diameter of the cable.
According to the invention, the winding radius of the cable can be accurately measured, and accumulated errors are eliminated.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram showing the composition of the cable winding radius measuring system according to the present invention.
Fig. 2 shows a schematic view of the setup of the calibration device of the cable winding radius measuring system of the present invention.
Fig. 3 shows a schematic workflow diagram of the cable winding radius measuring system of the present invention.
Fig. 4 is a schematic diagram showing the structure of each part of the controller of the cable winding radius measuring system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
The following describes the composition of a cable winding radius measuring system according to an embodiment of the present invention with reference to fig. 1.
Fig. 1 is a schematic diagram showing the composition of the cable winding radius measuring system according to the present invention. As shown in fig. 1, the cable winding radius measurement system of this embodiment includes an encoder 11, a number of calibration devices 12, such as illustratively shown first calibration device 23, second calibration device 24, third calibration device 25, fourth calibration device 26, and a controller 13. Wherein the controller 13 is connected to each calibration device 12 and the encoder 11, the calibration devices 12 are arranged along the radial direction of the reel, each calibration device may comprise a transmitting device and a receiving device and is arranged in pairs, wherein the transmitting device is used for continuously transmitting the calibration signal of the winding radius of the cable, the receiving device is used for receiving the calibration signal transmitted by the transmitting device, and the condition that the receiving device receives the signal can reflect the winding condition of the cable at the position of the calibration device; the calibration device 12 inputs a calibration signal of the cable winding radius to the controller 13 to reflect the cable winding condition at the position of the calibration device 12, the encoder 11 inputs the actual number of turns of the reel and the cable winding and unwinding state to the controller 13, and the controller 13 receives the information input by the calibration device 12 and the encoder 11 and outputs the cable winding radius.
The following describes the arrangement of the calibration device according to an embodiment of the present invention with reference to fig. 2.
Fig. 2 shows a schematic view of the arrangement of the calibration device 12 of the measuring system of the winding radius of the cable according to the invention. The calibration means 12 may for example comprise transmitting means and receiving means and be arranged in pairs, the transmitting means and the receiving means may for example be in the form of optoelectronics, and the number of calibration means 12 may be set depending on the accuracy of the calibration. For example, the higher the calibration accuracy requirement, the greater the number of calibration devices; the lower the calibration accuracy requirement, the lower the number of calibration devices. As shown in fig. 2, the calibration means comprise first calibration means 23, second calibration means 24, third calibration means 25 and fourth calibration means 26, which are uniformly distributed in the radial direction of the reel 21. Of course, it should be clear to those skilled in the art that the above-mentioned arrangement of the calibration device 12 is not limited, and those skilled in the art may adopt other arrangements according to different needs, for example, a plurality of calibration devices may also be distributed non-uniformly in the radial direction of the reel 21, and will not be described herein again.
The operation of the system for measuring the winding radius of a cable according to an embodiment of the present invention will be described with reference to fig. 3.
Fig. 3 shows a schematic workflow diagram of the cable winding radius measuring system of the present invention. As shown in fig. 3, the workflow of the cable winding radius measuring system of this embodiment includes:
step S302, the calibration device collects a calibration signal of the winding radius of the cable. And acquiring the reference position of the reel where the outermost cable is positioned through the on-off signal of the calibration device.
Illustratively, a transmitting device of the calibrating device continuously transmits a calibrating signal of the winding radius of the cable, a receiving device of the calibrating device receives the calibrating signal transmitted by the transmitting device, the controller determines the winding condition of the cable at the position of the calibrating device according to the on-off condition of the signal received by the receiving device, and if the on-off condition of the signal received by the receiving device conforms to the on-off rule of the outermost cable of the reel, the position of the calibrating device at the position is determined as the reference position of the outermost cable on the reel.
In step S304, the encoder detects and records the actual number of turns of the reel.
And step S306, the encoder judges the cable winding and unwinding state.
The encoder can judge the cable winding and unwinding state by recording the change condition of the actual rotation angle of the reel. For example, the encoder may determine that the cable is in the cable-reeling state according to an increase in the actual rotation angle of the reel, or the encoder may determine that the cable is in the cable-unreeling state according to a decrease in the actual rotation angle of the reel.
In step S308, the controller corrects the calculation reference value of the cable winding radius according to the calibration signal of the cable winding radius.
And when the on-off condition of the calibration signal of the cable winding radius accords with a preset rule, correcting the calculation reference value of the cable winding radius according to the position of the calibration device sending out the calibration signal. Specifically, when the cable is taken in, if the calibration signal is changed from on-off to continuous non-reception, the position of the calibration device sending the calibration signal is used as a calculation reference value of the cable winding radius; or, when the cable is unwound, if the calibration signal is changed from continuously not receiving the signal to being switched on and off, the position of the calibration device sending the calibration signal is used as a calculation reference value of the cable winding radius.
For example, when the second calibration device 24 inputs a calibration signal of the cable winding radius according to the preset rule to the controller, the controller uses the radial distance between the second calibration device 24 and the reel axis as the calculation reference value of the cable winding radius.
And S310, the controller corrects the average winding turns of each layer of the cable according to the actual rotation turns of the reel detected in the time period of the two adjacent calibration signals.
For example, the average number of windings per layer of the modified cable can be calculated by the following formula:
wherein, CKFor the corrected average number of turns per layer of cable, ZTKAnd l is the radial distance between the two calibration devices which respectively send out the calibration signals at two adjacent positions before, and d is the diameter of the cable.
Because the cable has average winding turns per layerCKThe initial value of the controller is set as a theoretical value, the average winding turns of each layer of the cable can change in the cable winding and unwinding process, and the controller needs to utilize the corrected average winding turns C of each layer of the cableKInstead of the initial value of the average number of windings per layer of the cable. For example, l/d represents the number of cable winding layers between two adjacent calibration devices for the last calibration signal and the current calibration signal, and then C is calculatedKAnd obtaining the average winding number of each layer of the corrected cable between two calibration devices of two adjacent calibration signals. Before the next calibration device collects the calibration signal of the cable winding radius, C is usedKThe number of cable winding layers between the two calibration devices of the current calibration signal and the next calibration signal is estimated.
And step S312, calculating by the controller according to the calculated reference value of the corrected cable winding radius, the cable winding and unwinding state, the actual number of turns of the reel detected after correction, the average number of turns of winding of each layer of the corrected cable and the diameter of the cable to obtain the cable winding radius.
For example, the cable winding radius can be calculated by the following formula:
wherein R is the calculated cable winding radius, RkFor a calculated reference value of the corrected cable winding radius, ZKFor actual number of turns of reel detected after correction, CKD is the cable diameter for the average number of windings per layer of the modified cable. When the cable is in a cable-retracting state, a plus number is adopted in the formula; when the cable is in a cable laying state, a number-in-one is adopted in the formula.
After the cable winding radius is calculated, the process may return to step S304, so as to continuously calculate and calibrate the cable winding radius.
Through the working process of the system for measuring the winding radius of the cable, the winding radius of the cable can be accurately measured, accumulated errors are eliminated, and the synchronous control of the cable winding and unwinding and the vehicle speed is further guided, so that the synchronous performance of the cable and an engineering vehicle, namely the operation safety of the cable, is ensured. And the method is easy to implement and low in cost.
The structure of each part of the controller of the cable winding radius measuring system according to an embodiment of the present invention will be described with reference to fig. 4.
Fig. 4 is a schematic diagram showing the structure of each part of the controller of the cable winding radius measuring system according to the present invention. As shown in fig. 4, the controller 13 of the cable winding radius measuring system of this embodiment includes:
a reference value correcting unit 432 for correcting the calculated reference value of the cable winding radius according to the calibration signal of the cable winding radius.
When the on-off condition of the calibration signal of the cable winding radius meets the preset rule, the reference value correction unit 432 corrects the calculation reference value of the cable winding radius according to the position of the calibration device which sends out the calibration signal. For example, when the cable is wound, if the calibration signal is changed from on-off to continuously not receiving the signal, the reference value correction unit 432 takes the position of the calibration device which sends the calibration signal as the calculation reference value of the cable winding radius; alternatively, if the calibration signal is turned on and off during the unwinding from the continuously unreceived signal, the reference value correcting unit 432 sets the position of the calibration device that has sent the calibration signal as the calculation reference value of the cable winding radius.
And an average winding number correction unit 434, configured to correct the average winding number of each layer of the cable according to the actual rotation number of the reel detected in the time period of the two adjacent calibration signals.
For example, the calculation formula of the average winding number correction unit for correcting the average winding number of each layer of the cable is as follows:
wherein, CKFor the corrected cable, average number of windings per layer, CKIs set to a theoretical value, ZTKAnd l is the radial distance between the two calibration devices which respectively send out the calibration signals at two adjacent positions before, and d is the diameter of the cable.
And a winding radius calculation unit 436 for calculating the cable winding radius according to the calculated reference value of the corrected cable winding radius, the cable winding and unwinding state, the detected actual number of turns of the reel after correction, the average number of turns of winding of each layer of the corrected cable, and the diameter of the cable.
For example, the winding radius calculation unit calculates the winding radius of the cable according to the following calculation formula:
when the cable is in a cable-retracting state, a plus number is adopted in the formula; when the cable is in a cable laying state, a number-is adopted in the formula; wherein R is the calculated cable winding radius, RkFor a calculated reference value of the corrected cable winding radius, ZKFor actual number of turns of reel detected after correction, CKD is the cable diameter for the average number of windings per layer of the modified cable.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (15)
1. A method of measuring a cable winding radius, comprising:
collecting a calibration signal of a cable winding radius;
detecting the actual number of turns of the reel;
judging the cable winding and unwinding state;
correcting the calculation reference value of the cable winding radius according to the calibration signal of the cable winding radius;
correcting the average winding turns of each layer of the cable according to the actual rotation turns of the reel detected in the time period of the two adjacent calibration signals;
and calculating the cable winding radius according to the calculated reference value of the corrected cable winding radius, the cable winding and unwinding state, the actual number of turns of the reel detected after correction, the average number of turns of each layer of the corrected cable and the diameter of the cable.
2. The method of claim 1, wherein the calculation formula for calculating the cable wrap radius is:
when the cable is in a cable-retracting state, a plus number is adopted in the formula; when the cable is in a cable laying state, a number-is adopted in the formula;
wherein R is the calculated cable winding radius, RkFor a calculated reference value of the corrected cable winding radius, ZKFor actual number of turns of reel detected after correction, CKD is the cable diameter for the average number of windings per layer of the modified cable.
3. The method of claim 1, wherein the correcting the calculated reference value for the cable wrap radius based on the calibration signal for the cable wrap radius comprises:
and when the on-off condition of the calibration signal of the cable winding radius accords with a preset rule, correcting the calculation reference value of the cable winding radius according to the position of the calibration device sending out the calibration signal.
4. The method of claim 3, wherein the correcting the calculated baseline value for the cable wrap radius comprises:
when the cable is collected, if the calibration signal is changed from on-off to continuous non-reception, the position of the calibration device sending the calibration signal is used as a calculation reference value of the winding radius of the cable;
or,
and during cable unwinding, if the on-time and off-time of the calibration signal is changed from continuously not receiving the signal, the position of the calibration device sending the calibration signal is used as a calculation reference value of the cable winding radius.
5. The method of claim 1, wherein the average number of windings per layer of the modified cable is calculated by the formula:
wherein, CKFor the corrected cable, average number of windings per layer, CKIs set to a theoretical value, ZTKAnd l is the radial distance between the two calibration devices which respectively send out the calibration signals at two adjacent positions before, and d is the diameter of the cable.
6. The method of claim 1,
the calibration signal of the winding radius of the cable is sent by a calibration device arranged in the radial direction of the reel;
or reading the actual rotation angle of the reel recorded by the encoder, and judging the cable winding and unwinding state according to the change condition of the actual rotation angle of the reel.
7. A cable wrap radius measurement system comprising: a calibration device, an encoder and a controller; the controller is respectively connected with the calibrating device and the encoder, and the calibrating device is arranged along the radial direction of the reel; the calibration device inputs a calibration signal of the winding radius of the cable to the controller, the encoder inputs the actual number of turns of the reel and the winding and unwinding state of the cable to the controller, and the controller receives information input by the calibration device and the encoder and outputs the winding radius of the cable.
8. The system of claim 7, wherein the calibration device is an opto-electronic transmitting and receiving device.
9. The system of claim 7, wherein the number of calibration devices is set according to the accuracy of the calibration.
10. The system of claim 7, wherein the calibration device is provided in plurality and is disposed uniformly along a radial direction of the reel.
11. The system of claim 7, wherein the controller comprises:
the reference value correcting unit is used for correcting the calculation reference value of the cable winding radius according to the calibration signal of the cable winding radius;
the average winding turn number correcting unit is used for correcting the average winding turn number of each layer of the cable according to the actual rotation turn number of the reel detected in the time period of the two adjacent calibration signals;
and the winding radius calculating unit is used for calculating the winding radius of the cable according to the calculated reference value of the winding radius of the corrected cable, the cable winding and unwinding state, the actual number of turns of the reel detected after correction, the average number of turns of each layer of the corrected cable and the diameter of the cable.
12. The system of claim 11, wherein the winding radius calculation unit calculates the winding radius of the cable by the calculation formula:
when the cable is in a cable-retracting state, a plus number is adopted in the formula; when the cable is in a cable laying state, a number-is adopted in the formula;
wherein R is the calculated cable winding radius, RkFor a calculated reference value of the corrected cable winding radius, ZKFor actual number of turns of reel detected after correction, CKD is the cable diameter for the average number of windings per layer of the modified cable.
13. The system of claim 11, wherein the reference value correcting unit is configured to:
and when the on-off condition of the calibration signal of the cable winding radius accords with a preset rule, correcting the calculation reference value of the cable winding radius according to the position of the calibration device sending out the calibration signal.
14. The system of claim 13, wherein the reference value correcting unit is configured to:
when the cable is collected, if the calibration signal is changed from on-off to continuous non-reception, the position of the calibration device sending the calibration signal is used as a calculation reference value of the winding radius of the cable;
or,
and during cable unwinding, if the on-time and off-time of the calibration signal is changed from continuously not receiving the signal, the position of the calibration device sending the calibration signal is used as a calculation reference value of the cable winding radius.
15. The system as claimed in claim 11, wherein the average number of winding turns correcting unit for correcting the average number of winding turns per layer of the cable is calculated by the formula:
wherein, CKFor the corrected cable, average number of windings per layer, CKIs set to a theoretical value, ZTKAnd l is the radial distance between the two calibration devices which respectively send out the calibration signals at two adjacent positions before, and d is the diameter of the cable.
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| CN102383232A (en) * | 2011-07-19 | 2012-03-21 | 常州市第八纺织机械有限公司 | Method for measuring revolutions of warp beams of warping machine |
| CN103043532A (en) * | 2012-12-20 | 2013-04-17 | 中联重科股份有限公司 | Detection method and detection system for coil diameter of crane and hoisting steel wire rope |
| CN203672357U (en) * | 2013-12-03 | 2014-06-25 | 中钢集团武汉安全环保研究院有限公司 | On-line measurement device of crane wire rope diameter |
| CN203922549U (en) * | 2014-05-08 | 2014-11-05 | 北京金顺帆科技有限公司 | A kind of winch wirerope position detecting device |
| CN205537581U (en) * | 2016-03-03 | 2016-08-31 | 徐工集团工程机械有限公司 | Cable reels is around radial measurement system |
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| CN106546207B (en) | 2019-05-24 |
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Effective date of registration: 20220722 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: Jiangsu Xugong Construction Machinery Research Institute Co.,Ltd. Address before: 221004 Industrial Zone, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |