CN113200422A - Cable winch - Google Patents
Cable winch Download PDFInfo
- Publication number
- CN113200422A CN113200422A CN202110334153.XA CN202110334153A CN113200422A CN 113200422 A CN113200422 A CN 113200422A CN 202110334153 A CN202110334153 A CN 202110334153A CN 113200422 A CN113200422 A CN 113200422A
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- China
- Prior art keywords
- speed
- proximity switches
- proximity
- proximity switch
- winding drum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4457—Arrangements of the frame or housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4481—Arrangements or adaptations for driving the reel or the material
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
Abstract
The present disclosure provides a cable winch comprising: a reel; the two supports are arranged in parallel at intervals, and two ends of the winding drum are respectively and movably connected with the two supports in the circumferential direction; the annular speed measuring plate is coaxially sleeved on the outer wall surface of the winding drum, and a speed measuring hole is formed in the surface of the annular speed measuring plate; the distance between the proximity switches and the central axis of the winding drum is the same as the distance between the speed measuring hole and the central axis of the winding drum; the controller, with proximity switch electric connection, the controller is configured to acquire the check-out time that each proximity switch detected when the hole that tests the speed the same, divide proximity switch into a plurality of groups that test the speed, every group that tests the speed includes two proximity switches, based on the check-out time of two proximity switches in each group that tests the speed and two proximity switches's interval value, confirm each initial rotational speed that tests the speed and organize the correspondence, with each test the speed and organize the biggest initial rotational speed and confirm the rotational speed that is the reel. The method and the device can improve the detection precision and reliability of the rotating speed of the winding drum of the cable winch.
Description
Technical Field
The disclosure relates to the technical field of marine exploration, in particular to a cable winch.
Background
In the process of marine material and geological exploration, an exploration instrument is required to be used as exploration equipment, and in the process of putting the exploration instrument into deep sea, a cable winch is required to be used for retracting and releasing a power cable for the exploration instrument so as to form an exploration plane network in the sea in cooperation with the exploration instrument, so that the power cable can provide a stable power supply for the exploration instrument. In order to cover a larger sea area as much as possible, the length of the power cable is usually 8000-10000 m, and in order to deal with potential risks, the winding and unwinding speed and the winding and unwinding length of the power cable need to be measured in real time in the cable winch operation process.
Adopt the cable hoist that has detection reel rotational speed to realize measuring the purpose of the receive and release speed of power cable among the correlation technique, wherein, the cable hoist includes: the winding drum, the detection wheel, the proximity switch and the controller are coaxially connected, the detection wheel is provided with a circle of speed measuring holes which are circumferentially and uniformly distributed, the proximity switch is arranged on a support of the winding drum and is just opposite to the detection wheel in arrangement, and the controller determines the rotating speed of the winding drum by acquiring the time difference between two testing holes detected by the proximity switch in the process of the detection wheel along with the rotation of the winding drum.
However, the detection accuracy of the single proximity switch adopted in the cable winch is poor, and if the proximity switch fails or is damaged, the cable winch is not easy to quickly recover the normal speed measurement function, so that the reliability is poor.
Disclosure of Invention
The embodiment of the disclosure provides a cable winch, which can improve the detection precision of the rotating speed of a winding drum of the cable winch, and any two proximity switches in a plurality of proximity switches can be used in a combined mode, so that the detection reliability is improved. The technical scheme is as follows:
the disclosed embodiment provides a cable winch, including: a reel; the two supports are arranged in parallel at intervals, the winding drum is positioned between the two supports, and two ends of the winding drum are respectively and movably connected with the two supports in the circumferential direction; the annular speed measuring plate is coaxially sleeved on the outer wall surface of the winding drum, and a speed measuring hole is formed in the surface of the annular speed measuring plate; the at least three proximity switches are circumferentially arranged on one support at intervals by taking the central axis of the winding drum as a center, and the distance between each proximity switch and the central axis of the winding drum is equal to the distance between each proximity switch and the central axis of the winding drum; the controller is configured to acquire detection time when the proximity switches detect the same speed measuring hole, divide the proximity switches into a plurality of speed measuring groups, each speed measuring group comprises two proximity switches, determine initial rotating speed corresponding to each speed measuring group based on the detection time of the two proximity switches and a distance value between the two proximity switches in each speed measuring group, and determine the maximum initial rotating speed in each speed measuring group as the rotating speed of the winding drum.
In one implementation of the embodiment of the present disclosure, the cable winch includes three proximity switches, and the dividing the proximity switches into a plurality of speed measurement groups includes: and determining one proximity switch as a shared switch, and combining the shared switch with the rest two proximity switches respectively to form two speed measurement groups.
In another implementation manner of the embodiment of the present disclosure, the determining an initial rotation speed corresponding to each speed measurement group based on the detection time of two proximity switches in each speed measurement group and a distance value between the two proximity switches includes: and determining the ratio of the distance value between the two proximity switches in the same speed measurement group to the difference between the detection time of the two proximity switches as the initial rotating speed.
In another implementation manner of the embodiment of the present disclosure, the distance value between the proximity switches is a central angle corresponding to an arc where the two proximity switches are located, with the central axis of the winding drum as a center of circle, or; the distance value of the proximity switches is the length corresponding to the arc where the two proximity switches are located by taking the central axis of the winding drum as the center of a circle.
In another implementation manner of the embodiment of the present disclosure, the plate surface of the annular speed measurement plate is provided with one speed measurement hole, or; the ring is equipped with a plurality of circumference equipartitions on the face of the board that tests the speed the hole tests the speed, the equal circumference equipartition of proximity switch, adjacent two the central angle between the hole that tests the speed is not less than adjacent two central angle between the proximity switch.
In another implementation manner of the embodiment of the present disclosure, the cable winch further includes an annular guide rail and a slider, the annular guide rail is located on the bracket, the annular guide rail is coaxial with the winding drum, the inner diameter of the annular guide rail is the same as the distance between the speed measurement hole and the central axis of the winding drum, the slider is slidably disposed on the annular guide rail, and the slider is configured to be selectively fixed at any position of the annular guide rail, the slider is detachably connected to the proximity switch, and the slider corresponds to the proximity switch one to one.
In another implementation of the embodiment of the present disclosure, the annular guide rail is an iron member, and the slider is a magnetic member.
In another implementation manner of the embodiment of the present disclosure, the cable winch further includes a plurality of pressure sensors, the pressure sensors are electrically connected to the controller, the plurality of pressure sensors are circumferentially and uniformly distributed on the annular guide rail, and the controller is further configured to acquire a pressure signal detected by each of the pressure sensors, and determine a position of each of the proximity switches on the annular guide rail based on the pressure signal.
In another implementation of the disclosed embodiment, the controller is further configured to determine a turning direction of the drum based on the detection time of the two proximity switches.
In another implementation manner of the embodiment of the present disclosure, the support includes two supporting legs arranged in parallel at intervals and a plurality of connecting rods arranged in parallel at intervals, and two ends of the connecting rods are respectively and vertically connected between the two supporting legs.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
the embodiment of the disclosure provides a cable winch, the reel can set up between two supports with the rotation of circumference, it has the ring to test the speed board to go back coaxial cover on the reel, still be provided with the hole of testing the speed on the ring test speed board, and simultaneously, be provided with at least three proximity switch on the support, proximity switch circumference is encircleed and is arranged on the support, and proximity switch and test the speed both the distance homogeneous phase of hole to the axis of reel is the same, drive the in-process that the ring tested the speed board pivoted at the reel like this, the hole of testing the speed on the ring test the speed board just can be relative with a plurality of proximity switches respectively in different positions.
Simultaneously, the cable winch still is provided with the controller with proximity switch electric connection, because proximity switch and the face of ring speed measuring board detect the signal when relative time and proximity switch and speed measuring hole detect the signal when relative time are different, therefore, at ring speed measuring board rotation in-process, the controller just can be through the signal that obtains proximity switch and detect, and confirm when the signal is the signal that corresponds the speed measuring hole, can judge that proximity switch and speed measuring hole are just right this moment, this moment the controller can also note this proximity switch and speed measuring hole detection time when just right, the controller can acquire the detection time that each proximity switch detected the speed measuring hole promptly. And the controller can also divide at least three proximity switches into a plurality of speed measurement groups, wherein each speed measurement group is provided with two proximity switches, the controller can calculate the initial rotating speed corresponding to each speed measurement group according to the detection time difference and the distance value of the two proximity switches in each speed measurement group, and finally, the maximum one of the initial rotating speeds is determined as the rotating speed of the winding drum, so that the condition that the rotating speed of the winding drum is smaller and the length of the cable which is discharged is lower than the expected length in the process of winding and unwinding the cable is avoided.
Compared with the prior art, the method has the advantages that a single proximity switch is adopted to detect two different test holes, and the time difference between the two speed measuring holes is obtained to determine the rotating speed of the winding drum. The cable winch in the embodiment of the disclosure is provided with the proximity switches, the proximity switches are grouped in pairs, each speed measurement group adopts two proximity switches to sequentially detect the same speed measurement hole, the detection time is accurately determined through the two proximity switches, the speed measurement holes are detected twice in a short time by adopting a single proximity switch, the detection time is determined, the mode of the speed measurement group is adopted to obtain the difference value of more accurate detection time, the more accurate initial rotating speed is obtained, and the more accurate rotating speed of the winding drum can be obtained. Moreover, even if the proximity switches are in failure, any two proximity switches in the proximity switches can still be combined to form a speed measurement group, so that the normal speed measurement function can be quickly recovered, and the detection reliability is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of a cable winch according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a proximity switch disposed on a bracket according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an annular speed measuring plate according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of an annular guide rail and a slider provided by an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an annular guide rail and a pressure sensor provided in the embodiment of the present disclosure.
The various symbols in the figure are illustrated as follows:
1-a winding drum;
2-bracket, 21-supporting leg, 22-connecting rod;
3-circular speed measuring plate, 31-speed measuring hole;
4-a proximity switch;
5-a controller;
61-ring guide, 62-slide, 63-pressure sensor.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.
Fig. 1 is a schematic structural diagram of a cable winch according to an embodiment of the present disclosure. As shown in fig. 1, the cable winch includes: the device comprises a winding drum 1, two supports 2, a circular speed measuring plate 3, at least three proximity switches 4 and a controller 5.
As shown in fig. 1, two supports 2 are arranged in parallel at intervals, the winding drum 1 is located between the two supports 2, and two ends of the winding drum 1 are respectively connected with the two supports 2 in a movable manner in the circumferential direction.
The annular speed measuring plate 3 is coaxially sleeved on the outer wall surface of the winding drum 1, and a speed measuring hole 31 is formed in the plate surface of the annular speed measuring plate 3.
Fig. 2 is a schematic view of a proximity switch disposed on a bracket according to an embodiment of the present disclosure. As shown in fig. 2, at least three proximity switches 4 are circumferentially spaced on one of the supports 2 centering on the central axis of the drum 1.
The distance from the proximity switch 4 to the central axis of the winding drum 1 is the same as the distance from the speed measuring hole 31 to the central axis of the winding drum 1.
As shown in fig. 1, the controller 5 is electrically connected to the proximity switches 4, wherein the controller 5 is configured to obtain a detection time when each proximity switch 4 detects the same speed measuring hole 31, divide the proximity switches 4 into a plurality of speed measuring groups, each speed measuring group includes two proximity switches 4, determine an initial rotation speed corresponding to each speed measuring group based on the detection time of the two proximity switches 4 in each speed measuring group and a distance value between the two proximity switches 4, and determine the maximum initial rotation speed in each speed measuring group as the rotation speed of the winding drum 1.
The embodiment of the present disclosure provides a cable winch, but reel 1 sets up between two supports 2 with circumference rotation, it has ring speed measurement board 3 to go back coaxial cover on reel 1, still be provided with speed measurement hole 31 on ring speed measurement board 3, and simultaneously, be provided with at least three proximity switch 4 on support 2, proximity switch 4 circumference is encircleed and is arranged on support 2, and proximity switch 4 and speed measurement hole 31 both are the same to the distance of reel 1's axis, drive the in-process that ring speed measurement board 3 rotated at reel 1 like this, speed measurement hole 31 on ring speed measurement board 3 just can be relative with a plurality of proximity switch 4 respectively in different positions.
Simultaneously, the cable winch still is provided with controller 5 with 4 electric connection of proximity switch, because proximity switch 4 detects the signal that detects when the face of ring speedometer 3 is relative with the signal that proximity switch 4 detected when measuring the speed hole 31 is relative, consequently, ring speedometer 3 rotates the in-process, controller 5 just can be through obtaining the signal that proximity switch 4 detected, and confirm when the signal is the signal that corresponds the hole 31 that tests the speed, can judge this moment proximity switch 4 just right with the hole 31 that tests the speed, this moment controller 5 can also note this proximity switch 4 and the detection time that the hole 31 that tests the speed was just right, promptly controller 5 can acquire the detection time that each proximity switch 4 detected the hole 31 that tests the speed. And, the controller 5 can also divide at least three proximity switches 4 into a plurality of speed measurement groups, wherein each speed measurement group has two proximity switches 4, and the controller 5 can calculate the initial rotation speed corresponding to each speed measurement group according to the detection time difference and the distance value of the two proximity switches 4 in each speed measurement group, and finally, determine the maximum one of the initial rotation speeds as the rotation speed of the winding drum 1, so as to avoid that the rotation speed of the winding drum 1 is small and the length of the cable released is lower than the expected length in the process of winding and unwinding the cable.
Compared with the prior art, the method adopts a single proximity switch 4 to detect two different test holes and determines the rotating speed of the winding drum 1 by acquiring the time difference between the two speed measuring holes 31. The cable winch in the embodiment of the disclosure is provided with the proximity switches 4, and the proximity switches 4 are grouped in pairs, each speed measurement group adopts two proximity switches 4 to detect the same speed measurement hole 31 in sequence, so as to accurately determine the detection time through the two proximity switches 4, compared with the mode of adopting a single proximity switch 4 to detect the speed measurement hole 31 twice in a short time, so as to determine the detection time, the mode of adopting the speed measurement group can obtain a more accurate detection time difference value, so as to obtain a more accurate initial rotating speed, and further obtain a more accurate rotating speed of the winding drum 1. Moreover, even if the proximity switches 4 are in failure, any two proximity switches 4 in the proximity switches 4 can still be combined to form a speed measurement group, so that the normal speed measurement function can be quickly recovered, and the detection reliability is improved.
Among them, the proximity switch is also called contactless proximity switch, which is an electronic switching value sensor. When the metal detection body is close to the induction area of the proximity switch, the switch can quickly send out an electric command without contact.
In the embodiment of the present disclosure, the annular tachometer board 3 opposite to the proximity switch 4 may be a metal structural member, and when the proximity switch 4 sends a signal to the annular tachometer board 3, the signal returns to a positive pulse signal after encountering an obstacle, that is, the proximity switch 4 detects the positive pulse signal, for example, the positive pulse signal may be recorded as "1"; when the obstacle disappears, that is, the proximity switch 4 and the speed measuring hole 31 on the circular speed measuring plate 3 are opposite, the proximity switch 4 detects the negative pulse signal, for example, the negative pulse signal may be recorded as "0". Thus, the 1-0-1-0 … … can be recorded circularly during the continuous rotation of the circular speed measuring board 3 along with the winding drum 1 to form a continuous pulse signal.
Wherein, proximity switch 4's effective induction distance is 5mm to 8mm, consequently, in this disclosed embodiment, the interval that the ring tested the speed between board 3 and proximity switch 4 is 5mm to 8mm to guarantee that proximity switch 4 and ring test the speed and keep reasonable interval between board 3.
In the embodiment of the present disclosure, the Controller 5 may be a Programmable Logic Controller (PLC), the PLC is a digital operation Controller 5 with a microprocessor and used for automatic control, and may load a control instruction into a memory at any time for storage and execution, the PLC employs a Programmable memory, and stores therein instructions for performing operations such as logical operation, sequence control, timing, counting, and arithmetic operation, and controls various devices through digital or analog input and output.
Wherein, PLC respectively with each proximity switch 4 electric connection to acquire the pulse signal that each proximity switch 4 detected. PLC can acquire proximity switch 4's pulse signal in real time, and when proximity switch 4 detected positive pulse signal (proximity switch 4 just right with hole 31 that tests the speed), PLC can take notes current check-out time to after each proximity switch 4 detected same hole 31 that tests the speed in proper order, just can acquire the check-out time that each proximity switch 4 detected same test hole.
In some implementations, in order to ensure that the detection time obtained by the controller 5 is determined when each proximity switch 4 detects the same speed measuring hole 31, a speed measuring hole 31 is formed on the surface of the circular speed measuring plate 3.
Only one speed measuring hole 31 is formed in the circular speed measuring plate 3, so that any one of the proximity switches 4 can only detect a positive pulse signal through the speed measuring hole 31, and therefore the detection time recorded after the controller 5 acquires the positive pulse signal detected by the proximity switch 4 is the detection time of each proximity switch 4 in detecting the same test hole.
In other implementation manners, fig. 3 is a schematic structural diagram of a circular speed measuring board provided in the embodiments of the present disclosure. As shown in fig. 3, the surface of the annular speed measuring plate 3 is provided with a plurality of speed measuring holes 31 uniformly distributed in the circumferential direction, the proximity switches 4 are uniformly distributed in the circumferential direction, and the central angle between two adjacent speed measuring holes 31 is not less than the central angle between two adjacent proximity switches 4.
Because the central angle between two adjacent speed measuring holes 31 is larger than the central angle between two adjacent proximity switches 4, only one speed measuring hole 31 exists between two adjacent proximity switches 4 in the rotation process of the circular speed measuring plate 3, so that a certain speed measuring hole 31 passes through a first proximity switch 4, the first proximity switch 4 detects a positive pulse signal, the controller 5 records a second proximity switch 4 behind the first proximity switch 4 after recording a first detection time, and when the second proximity switch 4 detects the positive pulse signal for the first time in the time after the first detection time, the second detection time recorded by the controller 5 is the detection time respectively detected by the two proximity switches 4 detecting the same testing hole.
Illustratively, as shown in fig. 2, the cable winch includes three proximity switches 4. First proximity switch 4, second proximity switch 4 and third proximity switch 4 are in proper order the circumference interval and are arranged, and three proximity switch 4 can divide into two and test the speed the group.
In the division of the speed measurement groups, one proximity switch 4 may be determined as a shared switch, and the shared switch is combined with the remaining two proximity switches 4 to form two speed measurement groups.
In one implementation, the second proximity switch 4 located in the middle can be used as a common switch, that is, the first proximity switch 4 and the second proximity switch 4 are divided into a speed measurement group, and the second proximity switch 4 and the third proximity switch 4 are divided into a speed measurement group. Like this two liang of group of three proximity switch 4, every group that tests the speed all adopts two proximity switch 4 to detect same hole 31 that tests the speed in proper order to come the accurate detection time of confirming through two proximity switch 4.
In another implementation, any of the proximity switches 4 located on both sides may be used as a common switch. For example, the first proximity switch 4 is used as a common switch, that is, the first proximity switch 4 and the second proximity switch 4 are divided into a speed measurement group, and the first proximity switch 4 and the third proximity switch 4 are divided into a speed measurement group. Like this two liang of group of three proximity switch 4, every group that tests the speed all adopts two proximity switch 4 to detect same hole 31 that tests the speed in proper order to come the accurate detection time of confirming through two proximity switch 4.
In the embodiment of the present disclosure, determining the initial rotation speed corresponding to each speed measurement group based on the detection time of two proximity switches 4 in each speed measurement group and the distance value of two proximity switches 4 may include:
and determining the ratio of the distance value of the two proximity switches 4 in the same speed measurement group to the difference of the detection time of the two proximity switches 4 as the initial rotating speed.
Illustratively, the distance value of the proximity switches 4 is a central angle corresponding to an arc where the two proximity switches 4 are located, taking the central axis of the winding drum 1 as a center. The initial rotating speed determined by the method is the angular speed.
Illustratively, the distance value of the proximity switches 4 is the length corresponding to the arc where the two proximity switches 4 are located, taking the central axis of the winding drum 1 as the center of a circle. The initial rotating speed determined by the method is the linear speed.
In the embodiment of the present disclosure, the distance value between each proximity switch 4 may be data stored in the controller 5 after being measured in advance by a technician, so that when the controller 5 calculates the initial rotation speed, the corresponding distance value may be directly extracted.
Taking the arrangement of the proximity switches 4 shown in fig. 2 as an example, there are three proximity switches 4, where the length of the arc where the first proximity switch 4 and the second proximity switch 4 are located is L1, that is, the distance between the first proximity switch 4 and the second proximity switch 4 is L1; the length corresponding to the arc where the second proximity switch 4 and the third proximity switch 4 are located is L2, that is, the distance value between the second proximity switch 4 and the third proximity switch 4 is L2; and the length corresponding to the arc on which the first proximity switch 4 and the third proximity switch 4 are located is L1+ L2, that is, the distance value between the first proximity switch 4 and the third proximity switch 4 is L1+ L2. The three distance values may be stored in the controller 5, and when the initial rotation speed is to be calculated, the controller 5 may directly extract the corresponding distance values.
Taking the second proximity switch 4 located in the middle as an example of a common switch, the rotation speed of the reel 1 can be determined as follows:
first, in the process of rotation of the winding drum 1, when the first proximity switch 4 detects one speed measuring hole 31, the controller 5 immediately records a first detection time t1, when the second proximity switch 4 detects the same speed measuring hole 31, the controller 5 immediately records a second detection time t2, and when the third proximity switch 4 detects the same speed measuring hole 31, the controller 5 immediately records a third detection time t 3.
And then, respectively calculating the initial rotating speeds of the two speed measurement groups according to the two speed measurement groups. The first speed measurement group comprises a first proximity switch 4 and a second proximity switch 4, and the initial rotating speed v1 is L1/(t2-t 1). The second speed measuring device comprises a second proximity switch 4 and a third proximity switch 4, and the initial rotating speed v2 is L2/(t3-t 2).
Finally, the controller 5 compares the two initial rotating speeds v1 and v2, and outputs the initial rotating speed with a large number as the rotating speed of the winding drum 1, so as to avoid that the determined rotating speed of the winding drum 1 is too small, and the length of the cable which is paid out is lower than the expected length in the process of winding and unwinding the cable.
Optionally, the controller 5 is also used to determine the turning direction of the reel 1 based on the detection times of the two proximity switches 4.
Illustratively, as shown in fig. 2, there are three proximity switches 4, and the first proximity switch 4, the second proximity switch 4 and the third proximity switch 4 are arranged in the counterclockwise circumferential direction in this order. Therefore, when the detection time of the first proximity switch 4 is earlier than that of the second proximity switch 4, the winding drum 1 can be determined to rotate anticlockwise; when the detection time of the first proximity switch 4 is acquired later than the detection time of the second proximity switch 4, it is determined that the spool 1 is rotated clockwise. Thus, the state of the cable winch for recovering or releasing the cable can be judged according to the rotation direction of the winding drum 1.
Fig. 4 is a schematic structural diagram of an annular guide rail and a slider provided in an embodiment of the present disclosure. As shown in fig. 4, the cable winch further includes an annular guide rail 61 and sliders 62, the annular guide rail 61 is located on the support 2, the annular guide rail 61 is coaxial with the winding drum 1, the inner diameter of the annular guide rail 61 is equal to the distance between the speed measuring hole 31 and the central axis of the winding drum 1, the sliders 62 are slidably disposed on the annular guide rail 61, the sliders 62 are configured to be selectively fixed at any position of the annular guide rail 61, the sliders 62 are detachably connected with the proximity switches 4, and the sliders 62 correspond to the proximity switches 4 one by one.
Wherein, every proximity switch 4 all installs on corresponding slider 62, and slider 62 all can the interactive setting on circular guide 61, and slider 62 can fix the optional position at circular guide 61 selectively, so, proximity switch 4 just can fix the optional position at circular guide 61.
Through adjusting different proximity switch 4 positions on ring rail 61 like this for there can be multiple different interval values in the group that tests the speed that is formed by two proximity switch 4 combinations, through the mode that changes interval value promptly, make the interval value that can adopt different numerical value size under the different group that tests the speed, as the data of calculating initial rotational speed, improve the variety of sample data, in order to guarantee the reliability of the 1 rotational speed of reel of calculation.
Illustratively, the endless track 61 is a ferrous member and the slider 62 is a magnetic member. For example, the ring-shaped guide 61 may be a structural member made of metallic iron, and the slider 62 may be a magnet or a block-shaped structure in which a magnet is embedded. Thus, the slider 62 moves to any position of the annular guide rail 61, and the magnetic slider 62 can be attracted to the annular guide rail 61.
Wherein, the slider 62 can be provided with a screw hole, and the proximity switch 4 can be fixed on the screw hole of the slider 62 by adopting a bolt.
Exemplarily, fig. 5 is a schematic structural diagram of an annular guide rail and a pressure sensor provided in an embodiment of the present disclosure. As shown in fig. 5, the cable winch further includes a plurality of pressure sensors 63, the pressure sensors 63 are electrically connected to the controller 5, the plurality of pressure sensors 63 are circumferentially and uniformly distributed on the annular guide rail 61, and the controller 5 is further configured to obtain pressure signals detected by the pressure sensors 63, and determine the position of each proximity switch 4 on the annular guide rail 61 based on the pressure signals.
For example, the annular guide rail 61 may be a circular plate, the pressure sensor 63 and the slider 62 may be respectively disposed on two sides of the annular guide rail 61, and since the slider 62 has magnetism and the annular guide rail 61 is an iron member, the slider 62 may generate a certain pressure on the annular guide rail 61 after being adsorbed on the annular guide rail 61. Wherein the thickness of the circular plate is 1mm to 2mm so that the pressure sensor 63 located at the other side of the annular guide rail 61 can easily detect the pressure applied by the slider 62.
For example, 90 pressure sensors 63 may be arranged on the annular guide rail 61 in the circumferential direction, that is, each pressure sensor 63 is arranged at an interval of 4 °. Moreover, after each pressure sensor 63 is uniformly distributed in the circumferential direction, a serial number can be set for each pressure sensor 63, and each pressure sensor 63 is assigned with a value. For example, the first pressure sensor 63 is assigned a value of 0 °, the second pressure sensor 63 is assigned a value of 4 °, and the assigned difference between each adjacent two pressure sensors 63 is 4 °, and so on, the ninety-th pressure sensor 63 is assigned a value of 356 °. That is, each pressure sensor 63 corresponds to an angle value.
The serial numbers of the pressure sensors 63 and the angle values corresponding to the serial numbers can be input to the controller 5 for storage, so that when the sliding block 62 moves to any position of the annular guide rail 61, one pressure sensor 63 detects pressure and outputs a signal, and after the controller 5 acquires the signal, the serial number of the pressure sensor 63 and the angle value corresponding to the serial number can be determined, and the position angle of the proximity switch 4 can be determined. After the position angles of the two proximity switches 4 are determined, the difference value of the position angles of the two proximity switches 4 can be used as the distance value of the two proximity switches 4 to calculate the initial rotating speed.
Thus, after the position of the proximity switch 4 is adjusted, the position of the proximity switch 4 and the distance between any two proximity switches 4 can be quickly determined by the pressure sensor 63 without manual measurement by a technician. To quickly calculate the rotation speed of the reel 1.
Alternatively, as shown in fig. 1, the support 2 includes two support legs 21 arranged in parallel at intervals and a plurality of connecting rods 22 arranged in parallel at intervals, and both ends of the connecting rods 22 are respectively vertically connected between the two support legs 21. The frame type structure is adopted to manufacture the bracket 2, so that the material can be saved, and the bracket 2 is lighter.
Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure.
Claims (10)
1. A cable winch, characterized in that it comprises:
a reel (1);
the two supports (2) are arranged in parallel at intervals, the winding drum (1) is positioned between the two supports (2), and two ends of the winding drum (1) are respectively and movably connected with the two supports (2) in the circumferential direction;
the annular speed measuring plate (3) is coaxially sleeved on the outer wall surface of the winding drum (1), and a speed measuring hole (31) is formed in the surface of the annular speed measuring plate (3);
the three proximity switches (4) are circumferentially arranged on one support (2) at intervals by taking the central axis of the winding drum (1) as a center, and the distance from the proximity switches (4) to the central axis of the winding drum (1) is equal to the distance from the speed measuring hole (31) to the central axis of the winding drum (1);
the controller (5) is electrically connected with the proximity switches (4), the controller (5) is configured to obtain detection time when each proximity switch (4) detects the same speed measuring hole (31), the proximity switches (4) are divided into a plurality of speed measuring groups, each speed measuring group comprises two proximity switches (4), an initial rotating speed corresponding to each speed measuring group is determined based on the detection time of the two proximity switches (4) in each speed measuring group and a distance value of the two proximity switches (4), and the maximum initial rotating speed in each speed measuring group is determined as the rotating speed of the winding drum (1).
2. The cable winch according to claim 1, characterized in that it comprises three said proximity switches (4), said division of said proximity switches (4) into a plurality of speed measuring groups comprising:
and determining one proximity switch (4) as a shared switch, and combining the shared switch with the rest two proximity switches (4) respectively to form two speed measurement groups.
3. The cable winch according to claim 1, wherein said determining an initial rotation speed for each said speed measurement group based on said detection time of two said proximity switches (4) and a distance value of two said proximity switches (4) in each said speed measurement group comprises:
and determining the ratio of the distance value of the two proximity switches (4) in the same speed measurement group to the difference of the detection time of the two proximity switches (4) as the initial rotating speed.
4. The cable winch according to claim 3, characterized in that the distance between the proximity switches (4) is defined by the central angle corresponding to the arc of the two proximity switches (4) around the central axis of the drum (1), or;
the distance value of the proximity switches (4) is the length corresponding to the arc where the two proximity switches (4) are located by taking the central axis of the winding drum (1) as the center of a circle.
5. The cable winch according to claim 1, characterized in that the annular speedometer plate (3) has one of said speedometer holes (31) on the plate surface, or;
the ring is equipped with a plurality of circumference equipartitions on the face of test speed board (3) test speed hole (31), the equal circumference equipartition of proximity switch (4), adjacent two the central angle between the hole (31) of testing speed is not less than adjacent two central angle between proximity switch (4).
6. The cable winch according to any of the claims 1 to 5, characterized in that the cable winch further comprises an annular guide rail (61) and a sliding block (62), wherein the annular guide rail (61) is located on the bracket (2), the annular guide rail (61) is coaxial with the drum (1), the inner diameter of the annular guide rail (61) is equal to the distance from the speed measuring hole (31) to the central axis of the drum (1), the sliding block (62) is slidably arranged on the annular guide rail (61), the sliding block (62) is configured to be selectively fixed at any position of the annular guide rail (61), the sliding block (62) is detachably connected with the proximity switch (4), and the sliding block (62) corresponds to the proximity switch (4) in a one-to-one manner.
7. The cable winch according to claim 6, characterized in that said annular guide (61) is a ferrous element and said slider (62) is a magnetic element.
8. The cable winch according to claim 7, characterized in that it further comprises a plurality of pressure sensors (63), said pressure sensors (63) being electrically connected to said controller (5), a plurality of said pressure sensors (63) being circumferentially distributed on said endless guide (61), said controller (5) being further configured to acquire a pressure signal detected by each of said pressure sensors (63) and to determine the position of each of said proximity switches (4) on said endless guide (61) based on said pressure signal.
9. The cable winch according to any of the claims 1 to 5, characterized in that the controller (5) is also adapted to determine the direction of rotation of the drum (1) based on the detection times of the two proximity switches (4).
10. The cable winch according to any of claims 1 to 5, characterized in that the stand (2) comprises two parallel spaced-apart support legs (21) and a plurality of parallel spaced-apart connecting rods (22), the connecting rods (22) being connected at their two ends respectively perpendicularly between the two support legs (21).
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| CN202110334153.XA CN113200422B (en) | 2021-03-29 | 2021-03-29 | Cable winch |
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| CN202110334153.XA CN113200422B (en) | 2021-03-29 | 2021-03-29 | Cable winch |
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| CN113200422B (en) | 2022-11-22 |
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