CN112645163A - Cable winding device and control method of cable winding device - Google Patents
Cable winding device and control method of cable winding device Download PDFInfo
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- CN112645163A CN112645163A CN202011250413.7A CN202011250413A CN112645163A CN 112645163 A CN112645163 A CN 112645163A CN 202011250413 A CN202011250413 A CN 202011250413A CN 112645163 A CN112645163 A CN 112645163A
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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
- B65H75/4489—Fluid motors
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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
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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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
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- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
Abstract
The present disclosure provides a cable winding device and a control method of the cable winding device, including: when the cable winding roller rotates clockwise, the cable winding roller drives the cable winding motor to obtain hydraulic oil from the oil tank, the cable winding motor outputs the hydraulic oil, when the oil pressure value of the hydraulic oil is smaller than the set opening pressure of the second proportional overflow valve, the second proportional overflow valve is in an interruption state, and the cable winding motor generates resistance torque to prevent the cable winding roller from rotating clockwise; when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, the cable is driven by the cable to roll the cable roller, and the cable rolling roller drives the cable rolling motor to rotate so as to output the hydraulic oil. The automatic cable winding control based on hydraulic pressure is realized, when the continuous miner pulls or does not pull the cable, the cable can not be continuously unwound due to the self weight or the rotation inertia of the cable winding device, and when the continuous miner stops not before, the cable winding device also can correspondingly stop unwinding, so that reasonable braking control is realized, and self-adaptive cable winding and unwinding are realized.
Description
Technical Field
The disclosure relates to the technical field of highwall mining, in particular to a cable winding device and a control method of the cable winding device.
Background
In the process of side mining, a cable winding device is generally adopted to provide cable winding and cable discharging tasks for side mining equipment, as shown in fig. 1, fig. 1 is a working schematic diagram of the cable winding device in the related art, fig. 1 shows a cable winding device 1, a cable 2, a conveying unit 4 and a continuous miner 5, the cable winding device is installed on a high platform and is fixed, the continuous miner and the conveying unit walk forwards while cutting coal, a plurality of conveying units can be continuously connected behind the conveying unit 4, and the cable supplies power to the continuous miner and the conveying unit.
Disclosure of Invention
The present disclosure is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of the disclosure is to provide a cable winding device and a control method of the cable winding device, which can realize hydraulic-based automatic cable winding control, when a continuous miner pulls or does not pull a cable, the cable cannot be continuously unwound due to self weight or rotation inertia of the cable winding device, and when the continuous miner stops before stopping, the cable winding device correspondingly stops unwinding, so that reasonable braking control is realized, and self-adaption cable winding and unwinding are realized.
In order to achieve the above object, an embodiment of a first aspect of the present disclosure provides a cable winding device, including: a cable; a cable winding roller; and a hydraulic control system connected with the cable drum; the hydraulic control system includes: the cable winding device comprises a cable winding motor, a second proportional overflow valve, an oil tank and a control device, wherein the cable winding motor is connected with the cable winding roller, the cable drives the cable winding roller to rotate so as to pay out the cable or take back the cable, the second proportional overflow valve is connected with the cable winding motor, and the oil tank is connected with the cable winding motor; when the cable winding roller rotates clockwise, the cable winding roller drives the cable winding motor to obtain hydraulic oil from the oil tank, the cable winding motor outputs the hydraulic oil, and when the oil pressure value of the hydraulic oil is smaller than the opening pressure set by a second proportional overflow valve, the second proportional overflow valve is in an interruption state, so that the cable winding motor generates resistance torque and prevents the cable winding roller from rotating clockwise based on the resistance torque; when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, so that the cable drives the cable rolling roller, and the cable rolling roller drives the cable rolling motor to rotate under the driving action of the cable to output the hydraulic oil.
In the cable winding device provided by the embodiment of the first aspect of the disclosure, when the cable winding roller rotates clockwise, the cable winding roller drives the cable winding motor to obtain hydraulic oil from the oil tank, the cable winding motor outputs the hydraulic oil, when the oil pressure value of the hydraulic oil is smaller than the opening pressure set by the second proportional relief valve, the second proportional relief valve is in an interruption state, so that the cable winding motor generates resistance torque and prevents the cable winding roller from rotating clockwise based on the resistance torque, when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional relief valve, the second proportional relief valve is opened to enable the cable to drive the cable winding roller, the cable winding roller drives the cable winding motor to rotate under the driving action of the cable to output the hydraulic oil, the automatic cable winding control based on hydraulic pressure can be realized, when the continuous miner pulls or does not pull the cable, the cable cannot be continuously unwound due to dead weight or the rotation inertia of the cable winding device, when the continuous miner does not stop, the cable winding device can correspondingly stop cable unwinding, so that reasonable braking control is realized, and self-adaptive cable winding and unwinding are realized.
In order to achieve the above object, a control method for a cable winding device according to an embodiment of the second aspect of the present disclosure includes: a cable; a cable winding roller; and a hydraulic control system connected with the cable drum; the hydraulic control system includes: the cable winding device comprises a cable winding motor, a second proportional overflow valve, an oil tank and a control device, wherein the cable winding motor is connected with the cable winding roller, the cable drives the cable winding roller to rotate so as to pay out the cable or take back the cable, the second proportional overflow valve is connected with the cable winding motor, and the oil tank is connected with the cable winding motor; the control method comprises the following steps: when the cable winding roller rotates clockwise, the cable winding roller drives the cable winding motor to obtain hydraulic oil from the oil tank, the cable winding motor outputs the hydraulic oil, and when the oil pressure value of the hydraulic oil is smaller than the set opening pressure of a second proportional overflow valve, the second proportional overflow valve is in an interruption state, so that the cable winding motor generates resistance torque and prevents the cable winding roller from rotating clockwise based on the resistance torque; when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, so that the cable drives the cable rolling roller, and the cable rolling roller drives the cable rolling motor to rotate under the driving action of the cable to output the hydraulic oil.
The control method for the cable winding device provided by the embodiment of the second aspect of the disclosure is that when the cable winding roller rotates clockwise, the cable winding roller drives the cable winding motor to obtain hydraulic oil from the oil tank, the cable winding motor outputs the hydraulic oil, when the oil pressure value of the hydraulic oil is smaller than the set opening pressure of the second proportional relief valve, the second proportional relief valve is in an interruption state, so that the cable winding motor generates resistance torque, and the cable winding roller is prevented from rotating clockwise based on the resistance torque, when the oil pressure value of the hydraulic oil is larger than the set opening pressure of the second proportional relief valve, the second proportional relief valve is opened, so that the cable drives the cable winding roller, the cable winding roller drives the cable winding motor to rotate under the driving action of the cable to output the hydraulic oil, the hydraulic automatic cable winding control can be realized, when the coal mining machine is continuously pulled or the cable is not pulled, the cable cannot be continuously unwound due to dead weight or the rotation inertia of the cable, when the continuous miner does not stop, the cable winding device can correspondingly stop cable unwinding, so that reasonable braking control is realized, and self-adaptive cable winding and unwinding are realized.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view showing the operation of a cable winding apparatus according to the related art;
fig. 2 is a schematic structural diagram of a cable winding device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a cable winding device according to another embodiment of the present disclosure;
FIG. 4 is a schematic view of a torque applied to the cable winding device according to an embodiment of the disclosure;
FIG. 5 is an electrical control schematic in an embodiment of the disclosure;
fig. 6 is a schematic flow chart of a control method of a cable winding device according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the present disclosure and should not be construed as limiting the same. On the contrary, the embodiments of the disclosure include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 2 is a schematic structural diagram of a cable winding device according to an embodiment of the present disclosure.
Referring to fig. 2, the apparatus 20 includes:
a cable 201; a cable drum 202; and a hydraulic control system 203 connected to the cable drum 202; the hydraulic control system includes: a cable winding motor 2031, a cable winding motor 2031 connected to the cable winding drum 202, the cable 201 driving the cable winding drum 202 to rotate so as to pay out the cable 201 or take in the cable 201, a second proportional relief valve 2032 connected to the cable winding motor 2031, and an oil tank 2033 connected to the cable winding motor 2031.
When the cable drum 202 rotates clockwise, the cable drum 202 drives the cable motor 2031 to obtain hydraulic oil from the oil tank, the cable motor 2031 outputs the hydraulic oil, and when the oil pressure value of the hydraulic oil is smaller than the opening pressure set by the second proportional relief valve 2032, the second proportional relief valve 2032 is in an interruption state, so that the cable motor 2031 generates resistance torque and the cable drum 202 is prevented from rotating clockwise based on the resistance torque; when the oil pressure value of the hydraulic oil is greater than the opening pressure set by the second proportional relief valve 2032, the second proportional relief valve 2032 is opened, so that the cable 201 drives the cable drum 202, and the cable drum 202 drives the cable winding motor 2031 to rotate under the driving action of the cable 201 to output the hydraulic oil.
It should be noted that, the connection mode between the above components may specifically be that an oil pipeline is used for connection, so that the hydraulic oil can be circulated and conveyed in the oil pipeline.
The oil pressure value may be embodied as a pressure value of the oil.
The set opening pressure can be set adaptively according to the actual scene of the cable winding task.
When the oil pressure value of the hydraulic oil is smaller than the opening pressure set by second proportional relief valve 2032, second proportional relief valve 2032 is in an interrupted state (i.e., the oil in the oil conduit cannot be cyclically delivered via second proportional relief valve 2032), so that cable winding motor 2031 generates a drag torque and prevents cable winding drum 202 from rotating clockwise based on the drag torque.
For example, when the continuous miner does not work, as shown in fig. 1, a section of the cable 201 is in a suspended state, at this time, due to the self weight of the cable 201, a moment is given to the cable drum 202 to rotate the cable drum 202 clockwise, so a second proportional relief valve 2032 (as shown in fig. 2) is added in the hydraulic control, when the cable drum 202 is about to rotate, the cable motor 2031 is driven to rotate, at this time, the cable motor 2031 plays a role of a hydraulic pump to output hydraulic oil, the hydraulic oil cannot pass due to the obstruction of the check valve 2034 and the second proportional relief valve 2032, at this time, the cable motor 2031 itself generates a moment to prevent the cable drum 202 from rotating clockwise.
When the oil pressure value of the hydraulic oil is greater than the opening pressure set by the second proportional relief valve 2032, the second proportional relief valve 2032 is opened, so that the cable 201 drives the cable drum 202, and the cable drum 202 drives the cable winding motor 2031 to rotate under the driving action of the cable 201 to output the hydraulic oil.
For example, when the oil pressure of the hydraulic oil is greater than the opening pressure set by the second proportional relief valve 2032, the second proportional relief valve 2032 is opened (i.e., the oil in the oil conduit can be circularly delivered through the second proportional relief valve 2032), so that the cable 201 drives the cable drum 202, and the cable drum 202 drives the cable winding motor 2031 to rotate under the driving action of the cable 201 to output the hydraulic oil, so as to keep the oil pressure of the hydraulic oil continuously greater than the opening pressure set by the second proportional relief valve 2032.
In other embodiments of the present disclosure, referring to fig. 3, the hydraulic control system 203 further comprises: a check valve 2034 connected to the cable winding motor 2031, the check valve 2034 and the second proportional relief valve 2032 are respectively connected to the same end of the cable winding motor 2031, a proportional directional valve 2035 connected to the cable winding motor 2031 and the second proportional relief valve 2032, and an oil tank 2036 connected to the proportional directional valve 2035; when the cable drum 202 rotates counterclockwise, the proportional directional valve 2035 obtains hydraulic oil from the oil tank and outputs the hydraulic oil, and the check valve 2034 opens to allow the cable 201 to drive the cable drum 202 to rotate counterclockwise.
For example, when the continuous miner operates to continuously cut coal and walk forward, the cable 201 is pulled by the continuous miner, so as to adaptively release the cable, the cable motor 2031 functions as a hydraulic pump to output hydraulic oil, as shown in fig. 2, when the hydraulic pressure between the cable motor 2031 and the second proportional relief valve 2032 reaches a certain value, the hydraulic oil flows out from the second proportional relief valve 2032 (i.e. the second proportional relief valve 2032 is opened, and the oil in the oil conduit can be circularly delivered through the second proportional relief valve 2032), so that the cable 201 drives the cable drum 202, the cable drum 202 drives the cable motor 2031 to rotate under the driving action of the cable 201 to output hydraulic oil, the flowing hydraulic oil circulates to the cable motor 2031 through the proportional directional valve 2035, when the continuous miner stops advancing, the cable drum 202 continues to rotate due to the rotational inertia, but the pressure of the hydraulic oil output from the cable motor 2031 is greatly reduced, when the hydraulic oil passes through the second proportional relief valve 2032, the hydraulic oil rapidly and gradually decreases until the cable winding motor 2031 stops rotating (during which the braking distance is short and the suspended cable 201 basically maintains the state in fig. 1).
In other embodiments of the present disclosure, referring to fig. 3, the hydraulic control system 203 further comprises: first proportional relief valve 2037 connected to second proportional relief valve 2032 and check valve 2034, respectively, second proportional relief valve 2032 and check valve 2034 are connected to the same end of first proportional relief valve 2037, and the other end of first proportional relief valve 2037 is connected to cable winding motor 2031, wherein, in the process that cable 201 drives cable winding drum 202 to rotate counterclockwise, the circulated hydraulic oil flows back to the oil tank via first proportional relief valve 2037.
For example, when the shearer moves backward, the proportional reversing valve 2035 is switched to the left position, and the high-pressure fluid flows out from the port B of the proportional reversing valve 2035 (as shown in fig. 3), reaches the cable winding motor 2031 through the check valve 2034, and drives the cable winding motor 2031 to rotate counterclockwise, so as to drive the cable winding device to wind the cable, generally, in order to prevent the cable 201 from loosening, the cable winding speed is set to be higher than the backward movement speed of the shearer, and the excess high-pressure fluid flows out from the first proportional overflow valve 2037 to return to the oil tank, and when the shearer moves forward, the proportional reversing valve 2035 is switched to the middle position, so that the flowing hydraulic oil circulates to the cable winding motor 2031 through the proportional reversing valve 2035 (as shown in fig. 3).
In some embodiments of the present disclosure, the T port of the proportional reversing valve 2035 is below the level of the tank.
For example, when installing a hydraulic system, it is required that the T port of the proportional directional valve 2035 is lower than the liquid level of the tank, or the oil return pipe is set at the highest position, so that the oil can be effectively prevented from flowing back to the tank when the cable is laid.
In the embodiment of the disclosure, considering that the cable winding device is a circular roller, when the number of winding turns of the cable 201 on the roller is small and the number of winding turns of the cable 201 is large, the distance between the outermost cable 201 and the axis of the roller is large, when the same pulling force is used for pulling, the generated torque is large, in order to control the pulling force applied to the cable 201 within a reasonable small range (considering that the optical fiber in the cable 201 is damaged when the pulling force is large), the braking torque can be adjusted in real time according to the winding condition of the cable 201, so that when the distance between the outermost cable 201 and the axis of the roller is changed, the corresponding braking torque is also changed in a self-adaptive manner, and the pulling force applied to the cable 201 can be ensured to be basically unchanged.
Thus, the apparatus 20 in the disclosed embodiment further comprises: the distance measuring sensor 204 is connected with the cable winding drum 202, the distance measuring sensor 204 is used for detecting a distance value between the distance measuring sensor 204 and the outermost cable 201 of the cable winding device, the distance value is used for subsequent assistance in determining the vertical distance between the outermost cable 201 of the cable winding device and the axis, and the hydraulic control system 203 further comprises: a controller 2038 connected to the first proportional relief valve 2037 and the second proportional relief valve 2032, respectively, the controller 2038 being connected to the distance measuring sensor 204, wherein the controller 2038 adjusts the opening pressure set by the first proportional relief valve 2037 and the opening pressure set by the second proportional relief valve 2032, respectively, according to the distance values; wherein the tension experienced by the cable 201 after adjustment is between the set range of values.
The above-mentioned pre-configured corresponding relationship is obtained by calibration according to experimental data.
The principle of adjusting the cracking pressure set by the first proportional relief valve 2037 and the cracking pressure set by the second proportional relief valve 2032, respectively, in accordance with the distance values as described above can be explained as follows:
referring to fig. 4, fig. 4 is a schematic diagram of a moment applied to a cable winding device according to an embodiment of the disclosure.
Because the cable winding device comprises the cable winding roller 202, the winding number of the cable 201 on the cable winding roller 202 determines the distance between the cable 201 of the outermost circle and the axis of the roller, when the cable is pulled by the same pulling force, the winding number of the cable 201 is different, and the generated torque is different (as shown in fig. 4).
Therefore, in order to protect the optical fiber in the cable 201, the embodiment of the present disclosure may perform corresponding control, so as to keep the pulling force applied to the cable 201 within a relatively reasonable range, for example, when the number of windings of the cable 201 changes, the opening pressure set by the first proportional relief valve 2037 and the opening pressure set by the second proportional relief valve 2032 may be timely adjusted, so as to keep the pulling force applied to the cable 201 between the set range values.
With reference to the formula:
moment M is FL; wherein, F is the pulling force applied to the cable 201, and L is the distance from the outermost cable 201 of the cable winding device to the axis of the roller.
Torque of cable winding motor 2031
Where p is the oil pressure value of the hydraulic oil, q is the displacement of the cable-winding motor 2031 (the intrinsic parameter of the cable-winding motor 2031), ηmIs mechanical efficiency.
Since the cable winding motor 2031 is connected to the cable winding drum 202 through the reducer, M ═ KT; k is a coefficient.
To obtain:
as can be seen from the equation, the oil pressure value p of the hydraulic oil is proportional to L,
the distance L2 from the distance sensor 204 to the outermost cable 201 of the cable winding device can be detected in real time by using the distance measuring sensor 204, the size of L is calculated, that is, L2-L1, and L1 is the distance from the distance sensor 204 to the axis of the cable winding drum 202 (the distance may have directionality, so that the difference between L2 and L1 is taken as the distance from the outermost cable 201 of the cable winding device to the axis of the cable winding drum 202), the correspondence between L and the data between the opening pressure p1 set by the first proportional relief valve 2037 and the opening pressure p2 set by the second proportional relief valve 2032 (the correspondence may be referred to as a preconfigured correspondence) is obtained through experiments, and the preconfigured correspondence is input into the controller 2038.
Referring to fig. 5, fig. 5 is an electrical control schematic diagram in an embodiment of the present disclosure.
In the actual control process, as shown in fig. 5, the data of the ranging sensor is transmitted to the controller, and an electric signal corresponding to the opening pressure p1 set by the first proportional relief valve and an electric signal corresponding to the opening pressure p2 set by the second proportional relief valve are given in real time through calculation of the controller, so that the tensile force applied to the cable is ensured to be within a set range value, and the optical fiber in the cable is protected.
In the embodiment, when the cable drum rotates clockwise, the cable drum drives the cable drum motor to obtain hydraulic oil from the oil tank, the cable drum motor outputs the hydraulic oil, when the oil pressure value of the hydraulic oil is smaller than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is in an interruption state, so that the cable drum motor generates resistance torque, and the cable drum is prevented from rotating clockwise based on the resistance torque, when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, so that the cable drives the cable drum, the cable drum drives the cable drum motor to rotate under the driving action of the cable to output the hydraulic oil, the automatic cable winding control based on hydraulic pressure can be realized, when the cable is pulled or not pulled by the continuous miner, the cable cannot be continuously unwound due to dead weight or the rotation inertia of the cable winding device, when the continuous miner does not stop, the cable winding device can correspondingly stop cable unwinding, so that reasonable braking control is realized, and self-adaptive cable winding and cable unwinding are realized.
Fig. 6 is a schematic flow chart of a control method of a cable winding device according to an embodiment of the present disclosure.
The cable coiling device comprises: a cable; a cable winding roller; and a hydraulic control system connected with the cable drum; the hydraulic control system includes: the cable winding motor is connected with the cable winding roller, the cable drives the cable winding roller to rotate so as to emit or withdraw the cable, the second proportional overflow valve is connected with the cable winding motor, and the oil tank is connected with the cable winding motor. For the structural schematic of the cable winding device, reference may be made to the above embodiments, and details are not described herein.
Referring to fig. 6, the method includes:
s601: when the cable roller rotates clockwise, the cable roller drives the cable roller motor to obtain hydraulic oil from the oil tank, the cable roller motor outputs the hydraulic oil, and when the oil pressure value of the hydraulic oil is smaller than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is in an interruption state, so that the cable roller motor generates resistance torque and prevents the cable roller from rotating clockwise based on the resistance torque.
S602: when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, so that the cable is driven by the cable to roll the cable roller, and the cable rolling roller drives the cable rolling motor to rotate under the driving action of the cable to output the hydraulic oil.
In other embodiments of the present disclosure, the hydraulic control system further comprises: the one-way valve is connected with the cable winding motor, the one-way valve and the second proportional overflow valve are respectively connected to the same end of the cable winding motor, the proportional reversing valve is connected with the cable winding motor and the second proportional overflow valve, and the oil tank is connected with the proportional reversing valve.
It should be noted that, the explanation of the embodiment of the cable winding device in fig. 1 to fig. 5 also applies to the control method of the cable winding device of this embodiment, and the implementation principle is similar, and is not described herein again.
In the embodiment, when the cable drum rotates clockwise, the cable drum drives the cable drum motor to obtain hydraulic oil from the oil tank, the cable drum motor outputs the hydraulic oil, when the oil pressure value of the hydraulic oil is smaller than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is in an interruption state, so that the cable drum motor generates resistance torque, and the cable drum is prevented from rotating clockwise based on the resistance torque, when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, so that the cable drives the cable drum, the cable drum drives the cable drum motor to rotate under the driving action of the cable to output the hydraulic oil, the automatic cable winding control based on hydraulic pressure can be realized, when the cable is pulled or not pulled by the continuous miner, the cable cannot be continuously unwound due to dead weight or the rotation inertia of the cable winding device, when the continuous miner does not stop, the cable winding device can correspondingly stop cable unwinding, so that reasonable braking control is realized, and self-adaptive cable winding and cable unwinding are realized.
It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present disclosure, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present disclosure includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present disclosure may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.
Claims (10)
1. A cable reeling device, characterized in that the device comprises:
a cable;
a cable winding roller; and
the hydraulic control system is connected with the cable winding roller;
the hydraulic control system includes: the cable winding device comprises a cable winding motor, a second proportional overflow valve, an oil tank and a control device, wherein the cable winding motor is connected with the cable winding roller, the cable drives the cable winding roller to rotate so as to pay out the cable or take back the cable, the second proportional overflow valve is connected with the cable winding motor, and the oil tank is connected with the cable winding motor;
when the cable winding roller rotates clockwise, the cable winding roller drives the cable winding motor to obtain hydraulic oil from the oil tank, the cable winding motor outputs the hydraulic oil, and when the oil pressure value of the hydraulic oil is smaller than the opening pressure set by a second proportional overflow valve, the second proportional overflow valve is in an interruption state, so that the cable winding motor generates resistance torque and prevents the cable winding roller from rotating clockwise based on the resistance torque;
when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, so that the cable drives the cable rolling roller, and the cable rolling roller drives the cable rolling motor to rotate under the driving action of the cable to output the hydraulic oil.
2. The apparatus of claim 1, wherein the hydraulic control system further comprises:
the one-way valve is connected with the cable winding motor, the one-way valve and the second proportional overflow valve are respectively connected to the same end of the cable winding motor, the proportional reversing valve is connected with the cable winding motor and the second proportional overflow valve, and the oil tank is connected with the proportional reversing valve;
when the cable winding roller rotates anticlockwise, the proportional reversing valve obtains hydraulic oil from the oil tank and outputs the hydraulic oil, and the one-way valve is opened so that the cable drives the cable winding roller to rotate anticlockwise.
3. The apparatus of claim 1, wherein the hydraulic control system further comprises:
a first proportional overflow valve respectively connected with the second proportional overflow valve and the check valve, the second proportional overflow valve and the check valve are connected to the same end of the first proportional overflow valve, the other end of the first proportional overflow valve is connected with the cable winding motor, wherein,
in the process that the cable drives the cable winding roller to rotate anticlockwise, the circulated hydraulic oil flows back to the oil tank through the first proportional overflow valve.
4. The apparatus of claim 3, wherein the apparatus further comprises:
and the distance measuring sensor is connected with the cable rolling roller and used for detecting the distance value between the distance measuring sensor and the outermost cable of the cable rolling device.
5. The apparatus of claim 4, wherein the hydraulic control system further comprises: a controller respectively connected with the first proportional overflow valve and the second proportional overflow valve, the controller being connected with the distance measuring sensor, wherein,
the controller respectively adjusts the opening pressure set by the first proportional overflow valve and the opening pressure set by the second proportional overflow valve according to the distance value;
wherein, after adjustment, the cable is subjected to a tension between set range values.
6. The apparatus of claim 5, wherein,
the controller calculates and obtains a target distance value between the outermost cable of the cable winding device and the axis of the cable winding roller according to the distance value and the vertical distance between the distance measuring sensor and the axis of the cable winding roller;
and the controller determines a first target opening pressure and a second target opening pressure according to the target distance value and the preset corresponding relation, adjusts the opening pressure set by the first proportional overflow valve to the first target opening pressure, and adjusts the opening pressure set by the second proportional overflow valve to the second target opening pressure.
7. The apparatus of claim 6, wherein the preconfigured correspondence is calibrated based on experimental data.
8. The apparatus of claim 2, wherein the T port of the proportional reversing valve is below the level of the tank.
9. A control method of a cable winding device, characterized in that the cable winding device comprises: a cable; a cable winding roller; and a hydraulic control system connected with the cable drum; the hydraulic control system includes: the cable winding device comprises a cable winding motor, a second proportional overflow valve, an oil tank and a control device, wherein the cable winding motor is connected with the cable winding roller, the cable drives the cable winding roller to rotate so as to pay out the cable or take back the cable, the second proportional overflow valve is connected with the cable winding motor, and the oil tank is connected with the cable winding motor;
the control method comprises the following steps:
when the cable winding roller rotates clockwise, the cable winding roller drives the cable winding motor to obtain hydraulic oil from the oil tank, the cable winding motor outputs the hydraulic oil, and when the oil pressure value of the hydraulic oil is smaller than the set opening pressure of a second proportional overflow valve, the second proportional overflow valve is in an interruption state, so that the cable winding motor generates resistance torque and prevents the cable winding roller from rotating clockwise based on the resistance torque;
when the oil pressure value of the hydraulic oil is larger than the opening pressure set by the second proportional overflow valve, the second proportional overflow valve is opened, so that the cable drives the cable rolling roller, and the cable rolling roller drives the cable rolling motor to rotate under the driving action of the cable to output the hydraulic oil.
10. The method of claim 9, wherein the hydraulic control system further comprises: the one-way valve is connected with the cable winding motor, the one-way valve and the second proportional overflow valve are respectively connected to the same end of the cable winding motor, the proportional reversing valve is connected with the cable winding motor and the second proportional overflow valve, and the oil tank is connected with the proportional reversing valve; the method further comprises the following steps:
when the cable winding roller rotates anticlockwise, the proportional reversing valve obtains hydraulic oil from the oil tank and outputs the hydraulic oil, and the one-way valve is opened so that the cable drives the cable winding roller to rotate anticlockwise.
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