Photoelectric signal transmission system based on electric slip ring and mooring cable retracting and releasing winch with the photoelectric signal transmission system

Abstract

The present invention provides an optoelectronic signal transmission system based on an electric slip ring and a mooring cable retracting and unwinding winch having the optoelectronic signal transmission system. By moving the optical transceiver in the retracting and unwinding winch signal transmission system to the inside of the winding drum of the mooring cable retracting and unwinding winch, the optical signal is converted into an electrical signal at the front end of the slip ring, so that the original optoelectronic slip ring can be replaced by the electric slip ring. This greatly reduces the cost and maintenance cost of the mooring cable retracting and unwinding winch, and eliminates the related functional limitations caused by the smooth ring occupying the shaft output position.

Description

Technical Field

[0001] The invention relates to a winch, in particular to a photoelectric signal transmission system based on an electric slip ring, and belongs to the field of mooring equipment manufacturing. Background Art

[0002] In the field of tethered equipment manufacturing and flight, the power supply and communication of the tethered equipment are usually achieved by a tethered cable containing a multi-core cable (tethered equipment power supply cable) and one or more optical fibers. The connection between it and the ground power supply 10 and the communication host 8 is dynamically realized through a photoelectric slip ring installed on the main shaft of the winding drum 3 of the tethered cable retractable winch. After the communication signal is led out by the optical fiber in the photoelectric slip ring, it is connected to the optical terminal to convert the optical signal into an electrical signal for subsequent processing.

[0003] The schematic diagram of the power supply, optical signal transmission and related components of the traditional mooring cable retracting winch is as follows Figure 1 As shown, the optoelectronic hybrid mooring cable 2 is wound on the winding drum 3 of the mooring cable retracting and releasing winch, one end of which is connected to the mooring equipment 1, and the other end is connected to the optoelectronic slip ring rotor 4 installed on the main shaft of the winding drum 3; the optoelectronic slip ring stator 5 is located outside the winding drum 3 and is connected to the fixed part of the bearing used to support the main shaft of the winding drum 3. After the communication signal in the mooring cable is led out by the optical fiber 9 (communication optical cable) in the optoelectronic slip ring stator 5, it is connected to the external optical terminal 6 to convert the optical signal into an electrical signal, and then transmitted to the communication host 8 through the signal cable 7 for subsequent processing; the power supply 10 is connected to the optoelectronic slip ring through the power supply cable 11, and then connected to the mooring cable through the optoelectronic slip ring and supplies power to the mooring equipment 1.

[0004] The photoelectric slip ring is actually a combination of a smooth ring and an electric slip ring. There are currently two problems with this connection method:

[0005] (1) Slip rings are expensive: The dynamic connection technology of optical fibers and the difficulty of manufacturing their components are much higher than the dynamic connection method of cables. Therefore, the price of a single-channel slip ring is more than ten times that of a multi-channel electric slip ring. In addition, increasing the number of optical fiber communication channels of a slip ring will increase its price exponentially.

[0006] (2) Occupying the output shaft position: Due to the particularity of the dynamic connection of optical fiber, the moving and static parts of the smooth ring require the center outlet, so it cannot be made into a hollow structure like an electric slip ring, which limits the related applications of output shaft transmission. Summary of the invention

[0007] In view of this: the present invention provides a photoelectric signal transmission system based on an electric slip ring. The photoelectric signal transmission system is used in a mooring cable retracting and releasing winch. By placing the optical terminal inside the winding drum, the photoelectric slip ring can be eliminated and an electric slip ring can be used. This can not only reduce the cost and maintenance cost of the mooring cable retracting and releasing winch, but also eliminate the relevant functional limitations caused by the photoelectric slip ring occupying the output shaft position.

[0008] The electric slip ring-based mooring cable retracting and unreeling winch optical signal transmission system comprises: an optical-electric hybrid mooring cable, an optical terminal, an electric slip ring, a communication host and a power supply;

[0009] The optical terminal is installed inside the winding drum and rotates with the winding drum;

[0010] The electric slip ring is sleeved on the main shaft of the winding drum, wherein the electric slip ring rotor is fixedly connected to the main shaft, and the electric slip ring stator is fixedly connected to the fixed part of the main shaft bearing;

[0011] The optoelectronic hybrid mooring cable comprises a mooring equipment power supply cable and one or more optical fibers; the optoelectronic hybrid mooring cable is wound on a winding drum of a mooring cable retracting and releasing winch, and one end is connected to the mooring equipment; the optical fiber in the other end of the optoelectronic hybrid mooring cable is directly connected to the optical terminal, and the mooring equipment power supply cable in this end, the signal cable led out of the optical terminal and the power supply cable of the optical terminal are connected to the electric slip ring rotor; the signal cable led out of the electric slip ring stator is directly connected to a communication host, and the led-out main power supply cable is directly connected to a power supply.

[0012] An optical terminal installation seat is installed on the inner wall of the winding drum, and the optical terminal is fixed on the installation seat.

[0013] In addition, the present invention provides a mooring cable retracting and unreeling winch with the photoelectric signal transmission system, comprising: a winding drum, a photoelectric signal transmission system, a cable arrangement assembly, a winch bracket, and a transmission support, a motor, and an electromagnetic clutch located inside the winding drum;

[0014] The optoelectronic signal transmission system is the optoelectronic signal transmission system based on electric slip ring according to claim 1 or 2;

[0015] The photovoltaic hybrid mooring cable is wound on the winding drum;

[0016] The transmission support is fixedly connected to the winding drum;

[0017] The motor is installed inside the winding drum through a motor fixing tube, and the motor fixing tube is supported on the winch bracket after extending out of the winding drum;

[0018] The power output shaft of the motor is connected to the transmission support and the main shaft of the winding drum respectively through the electromagnetic clutch; the main shaft is sleeved with an electric slip ring and then passes through the winding drum and is supported on the winch bracket through the main shaft bearing, wherein the electric slip ring rotor is fixedly connected to the main shaft, and the electric slip ring stator is fixedly connected to the fixed part of the main shaft bearing; when the electromagnetic clutch is engaged, the power of the motor is transmitted to the main shaft, and then transmitted to the winding drum through the transmission support;

[0019] The cable arrangement assembly is supported on the winch bracket, and the optoelectronic hybrid mooring cable passes through the cable arrangement hole on the cable arrangement assembly and is connected to the mooring equipment.

[0020] Beneficial effects:

[0021] By placing the optical terminal at the front end of the slip ring inside the winding drum, the optical signal is converted into an electrical signal at the front end of the slip ring, so that the photoelectric slip ring can be eliminated and an electric slip ring can be used. This can not only reduce the cost and maintenance cost of the mooring cable retracting and releasing winch, but also eliminate the related functional limitations caused by the photoelectric slip ring occupying the output shaft position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of power supply and optical signal transmission and related components for conventional mooring cable retracting winch;

[0023] Figure 2 It is a schematic diagram of the power supply and optical signal transmission of the mooring cable retracting and releasing winch and related components in the present invention;

[0024] Figure 3 The figure is a schematic diagram of the structure of a mooring cable retracting and releasing winch with the photoelectric signal transmission system.

[0025] Among them: 1-tethering equipment, 2-photoelectric hybrid tethering cable, 3-winding drum, 4-photoelectric slip ring rotor, 5-photoelectric slip ring stator, 6-optical terminal, 7-signal cable, 8-communication host, 9-optical fiber, 10-power supply, 11-main power supply cable, 12-electric slip ring rotor, 13-electric slip ring stator, 14-cross-spoke drum transmission support, 15-motor, 16-electromagnetic clutch, 17-winch bracket, 18-rotating shaft, 19-motor fixing cylinder, 20-motor fixing partition, 21-electric slip ring DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0027] Embodiment 1:

[0028] The present embodiment provides a photoelectric signal transmission system based on an electric slip ring. The photoelectric signal transmission system is used in a mooring cable pay-off winch. By placing an optical terminal inside a winding drum, the photoelectric slip ring is eliminated and an electric slip ring with an increased number of paths is adopted (four or more paths are added as needed, of which at least two paths are used for communication with the built-in optical terminal and at least two paths are used for power supply of the built-in optical terminal), thereby solving the problems existing in the use of photoelectric slip rings in conventional mooring cable pay-off winches.

[0029] The difference between the mooring cable pay-off winch and the conventional mooring cable pay-off winch is that the optical terminal is moved inside the winding drum 3, and the photoelectric slip ring is cancelled and replaced by an electric slip ring. Specifically:

[0030] like Figure 2 As shown, the optoelectronic hybrid mooring cable 2 is wound on the winding drum 3 of the mooring cable retracting and releasing winch, and one end is connected to the mooring equipment 1; the main shaft of the winding drum 3 is supported on the external support frame through a bearing, the electric slip ring is installed between the main shaft of the winding drum 3 and the fixed end of the bearing, and the optical terminal 6 is installed inside the winding drum 3.

[0031] Specifically, an optical terminal mounting seat is installed on the inner wall of the winding drum 3, and the optical terminal 6 is fixed on the mounting seat, so that the optical terminal 6 is fixed inside the winding drum 3 through the mounting seat and can rotate with the winding drum 3; the hollow electric slip ring is passed through the main shaft of the winding drum 3, and the electric slip ring includes an electric slip ring rotor 12 and an electric slip ring stator 13, wherein the electric slip ring rotor 12 is fixedly connected to the main shaft and rotates with the main shaft; the electric slip ring stator 13 is fixedly connected to the end plate of the main shaft bearing seat (i.e., the fixed end of the bearing).

[0032] The optoelectronic hybrid mooring cable 2 passes through the wire hole on the winding drum 3 and enters the interior of the winding drum 3, wherein the optical fiber in the optoelectronic hybrid mooring cable 2 is directly connected to the optical terminal 6 inside the winding drum 3, and the optical terminal 6 converts the optical signal into an electrical signal, which is led out by a signal cable connected to the optical terminal 6; the signal cable led out of the optical terminal 6, the optical terminal power supply cable and the mooring equipment power supply cable in the optoelectronic hybrid mooring cable 2 are connected to the electric slip ring rotor 12; the signal cable 7 led out of the electric slip ring stator 13 is directly connected to the communication host 8, and the main power supply cable 11 (including the mooring equipment power supply cable and the optical terminal power supply cable) led out of the electric slip ring stator 13 is directly connected to the power supply 10, and the power supply 10 provides power to the mooring equipment and the built-in optical terminal 6 through the power supply circuit.

[0033] The optical terminal 6 is arranged at the front end of the slip ring, and the optical signal is converted into an electrical signal at the front end of the slip ring, thereby eliminating the original slip ring and replacing the original photoelectric slip ring with an electrical slip ring with increased number of paths.

[0034] Embodiment 2:

[0035] This embodiment provides a compact mooring cable retracting and releasing winch using the optoelectronic signal transmission system of the first embodiment described above.

[0036] The structure of the mooring cable retracting winch is as follows: Figure 3 As shown, it includes: a winding drum 3, a wire arrangement assembly, a photoelectric signal transmission system, a cross-spoke drum transmission support 14, a motor 15, an electromagnetic clutch 16 and a winch bracket 17.

[0037] The connection relationship is as follows: the winding drum 3 is a hollow cylindrical structure with openings at both ends, and a cross-spoke drum transmission support 14 is arranged inside the mooring cable winding drum 3. The cross-spoke drum transmission support 14 includes: a central sleeve arranged along the axial direction of the mooring cable winding drum 3 and transmission support rods arranged on the outer circumference of the sleeve and distributed in a cross shape along the radial direction of the mooring cable winding drum 3; the four ends of the transmission support rods are respectively fixedly connected to the inner wall of the mooring cable winding drum 3; the central sleeve of the cross-spoke drum transmission support 14 is coaxially fixedly connected to the rotating shaft 18, and the rotating shaft 18 is the main axis of the cable winding drum 3.

[0038] The photoelectric signal transmission system adopts the photoelectric signal transmission system based on the electric slip ring in the above-mentioned embodiment 1, and the photoelectric signal transmission system includes: an optoelectronic hybrid mooring cable 2 (i.e., a mooring cable), an optical terminal 6, an electric slip ring 21, a communication host 8 and a power supply 10; wherein the optical terminal 6 is fixed to the inner wall of the winding drum 3 through an optical terminal mounting seat and rotates with the winding drum 3.

[0039] The motor fixing cylinder 19 is coaxially arranged inside the mooring cable winding drum 3, and one end of the motor fixing cylinder 19 is fixed on the support plate on one side of the winch bracket 17; a motor fixing partition 20 is arranged inside the motor fixing cylinder 19, and the motor 15 is fixed on the motor fixing partition 20; the active end of the electromagnetic clutch 16 is connected to the power output shaft of the motor 15, and the driven end is arranged in the center sleeve of the cross-spoke drum transmission support 14 and fixedly connected to the center sleeve, and the center sleeve is fixedly connected to the rotating shaft 18. When the electromagnetic clutch 16 is engaged, the power of the motor 15 can be transmitted to the cross-spoke drum transmission support 14 and the rotating shaft 18 respectively. At this point, the built-in drive motor and electromagnetic clutch are completed. When the electromagnetic clutch 16 is in the engaged state, the motor 15 rotates, and the mooring cable winding drum 3 can be driven to rotate through the cross-spoke drum transmission support 14 to realize the process of retracting and releasing the mooring cable.

[0040] The rotating shaft 13 is sleeved with the electric slip ring and supported on the support plate on the other side of the winch bracket 17 through the rotating shaft bearing; the electric slip ring rotor 12 is fixedly connected to the rotating shaft 18, and the electric slip ring stator 13 is fixedly connected to the fixed part of the rotating shaft bearing. The optoelectronic hybrid mooring cable 2 includes a mooring equipment power supply cable and one or more optical fibers; after the end of the optoelectronic hybrid mooring cable passes through the winding drum 3, the optical fiber in the end is directly connected to the optical terminal 6 inside the winding drum 3, and the mooring equipment power supply cable, the signal cable led out of the optical terminal and the optical terminal power supply cable in the end are connected to the electric slip ring rotor 12; the signal cable led out of the electric slip ring stator is directly connected to the communication host, and the led out power supply main cable is directly connected to the power supply.

[0041] The winch bracket 17 is the supporting structure of the entire mooring cable pay-off winch, which is similar to the winch-connected base of a traditional mooring cable pay-off winch. In order to reduce the overall weight of the pay-off winch, the winch bracket 17 is designed as a frame structure, including support plates arranged at both axial ends of the mooring cable winding drum 1 and three cross beams parallel to the axial direction of the mooring cable winding drum 1 for connecting the two support plates. The mooring cable pay-off winch is supported on the ground or the installation platform by two cross beams located below.

[0042] The two ends of the cable arrangement assembly are respectively supported on the support plates at the two ends of the winch bracket 17. The mooring cable passes through the cable arrangement hole on the cable arrangement assembly and is connected to the mooring equipment. The cable arrangement assembly is used to arrange the mooring cable on the mooring cable winding drum 3 in an orderly manner. The structure of the cable arrangement assembly is the same as that of the cable arrangement assembly on the conventional mooring cable retracting and releasing winch. It includes: a cable arrangement transmission unit, a cable arrangement screw and a cable arrangement light rod. The axis of the cable arrangement screw is parallel to the axis of the mooring cable winding drum 3. The cable arrangement transmission unit is used to drive the cable arrangement screw to rotate. The cable arrangement transmission unit is a transmission mechanism that is driven by a toothed belt (or gear) with the rotating shaft 18. The cable arrangement seat cooperates with the cable arrangement screw through the threaded hole on it to form a screw nut pair, which converts the rotation of the cable arrangement screw into a linear motion of the cable arrangement seat along the axis of the cable arrangement screw. The mooring cable passes through the cable hole on the cable arrangement seat and is wound on the mooring cable winding drum 3. In order to prevent the lead screw wire arranging seat from being stuck due to large lateral pulling force, a wire arranging polished rod parallel to the axial direction of the wire arranging lead screw is set as a guide rail, and a linear guide rail is used to assist the wire arranging. Specifically: a light hole parallel to the axis of its threaded hole is processed on the wire arranging seat, which is used to be mounted on the wire arranging polished rod. The wire arranging polished rod plays a guiding role for the linear motion of the wire arranging seat.

[0043] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mooring cable retracting winch with an electric slip ring based photoelectric signal transmission system, characterized in that: include: A winding drum (3), a photoelectric signal transmission system, a wire arrangement assembly, a winch bracket (17), and a transmission support, a motor (15), and an electromagnetic clutch (16) located inside the winding drum (3); The photoelectric signal transmission system comprises: a photoelectric hybrid mooring cable (2), an optical terminal (6), an electric slip ring, a communication host (8) and a power supply (10); The optical terminal (6) is installed inside the winding drum (3) and rotates with the winding drum (3); The electric slip ring is sleeved on the main shaft of the winding drum (3), wherein the electric slip ring rotor (12) is fixedly connected to the main shaft, and the electric slip ring stator (13) is fixedly connected to the fixed part of the main shaft bearing; The optoelectronic hybrid mooring cable (2) comprises a mooring equipment power supply cable and one or more optical fibers; the optoelectronic hybrid mooring cable (2) is wound on a winding drum (3) of a mooring cable retracting and unreeling winch, and one end is connected to the mooring equipment (1); the optical fiber in the other end of the optoelectronic hybrid mooring cable (2) is directly connected to the optical terminal (6), and the mooring equipment power supply cable in this end, the signal cable led out of the optical terminal (6) and the power supply cable of the optical terminal (6) are connected to the electric slip ring rotor (12); the signal cable (7) led out of the electric slip ring stator is directly connected to a communication host (8), and the led out power supply main cable (11) is directly connected to a power supply (10); The photoelectric hybrid mooring cable (2) is wound on a winding drum (3); The winding drum (3) is a hollow cylindrical structure with openings at both ends; The transmission support member (14) is arranged inside the winding drum (3) and is fixedly connected to the winding drum (3); The motor (15) is installed inside the winding drum (3) through a motor fixing tube, and the motor fixing tube extends out of the winding drum (3) and is supported on the winch bracket (17); The power output shaft of the motor (15) is connected to the transmission support and the main shaft of the winding drum (3) respectively through the electromagnetic clutch (16); the main shaft is sleeved with an electric slip ring and then passes through the winding drum (3) and is supported on a winch bracket (17) through a main shaft bearing, wherein the electric slip ring rotor (12) is fixedly connected to the main shaft, and the electric slip ring stator (13) is fixedly connected to the fixed part of the main shaft bearing; when the electromagnetic clutch (16) is engaged, the power of the motor (15) is transmitted to the main shaft, and then transmitted to the winding drum (3) through the transmission support; The cable arrangement assembly is supported on the winch bracket, and the optoelectronic hybrid mooring cable (2) passes through the cable arrangement hole on the cable arrangement assembly and is connected to the mooring equipment (1); The transmission support is a cross-spoke drum transmission support (14), comprising: a central sleeve arranged along the axial direction of the mooring cable winding drum and a transmission support rod arranged on the outer circumference of the central sleeve and radially arranged along the mooring cable winding drum; The ends of the transmission support rods are respectively fixedly connected to the inner wall of the winding drum (3); The driving end of the electromagnetic clutch (16) is connected to the power output shaft of the motor (15), and the driven end is fixedly connected to the main shaft through the central sleeve.

2. The mooring cable retracting and unreeling winch with an electric slip ring-based photoelectric signal transmission system as claimed in claim 1, characterized in that: An optical terminal installation seat is installed on the inner wall of the winding drum (3), and the optical terminal (6) is fixed on the installation seat.

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