CN113788419B - Constant tension winch locking device and control method thereof - Google Patents

Constant tension winch locking device and control method thereof Download PDF

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Publication number
CN113788419B
CN113788419B CN202111093889.9A CN202111093889A CN113788419B CN 113788419 B CN113788419 B CN 113788419B CN 202111093889 A CN202111093889 A CN 202111093889A CN 113788419 B CN113788419 B CN 113788419B
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China
Prior art keywords
electromagnet
block
rotating body
thrust block
winch
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CN202111093889.9A
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Chinese (zh)
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CN113788419A (en
Inventor
李建正
徐晨昕
朱江森
叶志坚
吴诗寒
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Wuhan Marine Machinery Plant Co Ltd
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Wuhan Marine Machinery Plant Co Ltd
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Priority to CN202111093889.9A priority Critical patent/CN113788419B/en
Publication of CN113788419A publication Critical patent/CN113788419A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/54—Safety gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/002—Brakes with direct electrical or electro-magnetic actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/006—Positive locking brakes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

The utility model provides a constant tension winch locking device, including the mount, the guide block, the rotator, the thrust block, the mount middle part is seted up and is inserted the complex mounting hole with the guide block, the mount top is fixed with the upper cover plate, the bottom of rotator is inserted the cooperation with the top of thrust block after passing the upper cover plate, the bottom of thrust block passes and extends to the guide block outside after the guide block inner chamber, the part that the thrust block is located outside the inner chamber can with locking gear looks joint, the part overcoat that the thrust block is located the inner chamber is equipped with return spring, the upper cover plate up end, the rotator top is provided with electro-magnet, the permanent magnet respectively. When the locking mechanism is locked, the first electromagnet is controlled to lose power, so that the rotating body and the thrust block move downwards under the action of magnetic force and compress the return spring until the thrust block is clamped with the stop gear, and when the unlocking mechanism is unlocked, the first electromagnet is controlled to lose power, so that the rotating body and the thrust block move upwards under the action of the elastic force of the return spring until the thrust block is separated from the stop gear.

Description

Constant tension winch locking device and control method thereof
Technical Field
The invention belongs to the technical field of marine machinery, and particularly relates to a constant-tension winch locking device and a control method thereof, which are suitable for improving the self-locking reliability of a winch.
Background
The constant tension winch is used as important equipment of deck machinery, and has the main functions of tensioning a cable in the process of completing mooring operation through a self-locking auxiliary ship body of a transmission device and controlling the tension of the cable to be constant so as to prevent the cable from being broken in severe ocean weather. Therefore, maintaining the cable tension value and fixing the cable length is of great importance for the normal use of the winch. The existing transmission device is usually a worm gear or a ball screw, the self-locking performance of the transmission device is easy to lose efficacy temporarily when a ship body jolts and shakes, so that the transmission device rotates under the action of external force, and the tension value and the length of a mooring rope are changed when the transmission device is self-locked again, so that the safety and the stability of the ship body are influenced. Therefore, the self-locking reliability of the winch transmission device is poor.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a constant-tension winch locking device with higher reliability and a control method thereof.
In order to realize the purpose, the invention provides the following technical scheme:
the utility model provides a permanent tension winch locking device, locking device includes mount, guide block, rotator, thrust block, the guide block is hollow structure, the middle part of mount is seted up and is inserted the complex mounting hole with the guide block, and the top of mount is fixed with the upper cover plate that covers the mounting hole, be provided with an electro-magnet on the up end of upper cover plate, the top of rotator is provided with the permanent magnet that corresponds with an electro-magnet, and the cooperation is inserted through the recess that sets up on it behind the upper cover plate to the bottom of rotator, the bottom of thrust block extends to the guide block outside after passing the inner chamber of guide block, and the partial overcoat that the thrust block is located the inner chamber is equipped with return spring, and the part that the thrust block is located the outer chamber can with winch transmission shaft locking gear looks joint.
The fixed frame is evenly provided with a plurality of electromagnets II corresponding to the permanent magnets along the circumference, the bottom of the rotating body is fixed with a stop block, the top of the thrust block penetrates through the middle of the stop block and then is inserted and matched with the groove, the top of the guide block is provided with a limiting hole communicated with the inner cavity, and the stop block under the first position can penetrate through the limiting hole.
The outer wall of the thrust block is fixedly provided with a check ring, the upper surface of the check ring is in contact with the lower surface of the check block, the lower surface of the check ring is connected with the top of a return spring, the bottom of the return spring is connected with the inner wall of the bottom end of the inner cavity, and the limit hole can be used for the check ring to pass through.
The top of rotator is provided with twist grip, twist grip's middle part is through the top fixed connection of bolt with the rotator, the quantity of permanent magnet is 2 and the symmetry sets up on the lower surface at twist grip both ends.
The rotating body is of a cylindrical structure, the first electromagnet is of an annular structure, and the central axis of the first electromagnet and the central axis of the rotating body are located on the same straight line.
The number of the second electromagnets is 4 and the second electromagnets are uniformly arranged on the periphery of the fixing frame.
A control method of a constant tension winch locking device comprises winch locking and winch unlocking;
the winch is locked as follows: controlling the first electromagnet to be electrified, driving the rotating body and the thrust block to move downwards and compressing the return spring by the magnetic field force between the first electromagnet and the permanent magnet until the thrust block is clamped with the stop gear, and completing the locking of the winch;
the winch unlocking method comprises the following steps: and controlling the first electromagnet to lose power, and enabling the rotating body and the thrust block to move upwards under the action of the elastic force of the return spring until the thrust block is separated from the stop gear, so that the winch is unlocked.
The fixed frame is uniformly provided with a plurality of second electromagnets corresponding to the permanent magnets along the circumference, the bottom of the rotating body is fixed with a stop block, the top of the thrust block passes through the middle of the stop block and then is in insertion fit with the groove, the top of the guide block is provided with a limiting hole communicated with the inner cavity, and the limiting hole can be used for the thrust block and the stop block positioned at the first position to pass through;
the winch locking sequentially comprises the following steps:
s1, controlling a second electromagnet to be electrified and a first electromagnet to be deenergized, wherein magnetic field force between the second electromagnet and a permanent magnet drives a rotating body and a stop block to rotate;
s2, after the stop block rotates to the first position, controlling the second electromagnet to lose power and the first electromagnet to be electrified, and driving the rotating body, the stop block and the thrust block to move downwards and compress the return spring by magnetic field force between the first electromagnet and the permanent magnet;
s3, the stop block penetrates through the limiting hole, the thrust block is clamped with the stop gear, then the second electromagnet is controlled to be electrified, and the magnetic field force between the second electromagnet and the permanent magnet drives the rotating body and the stop block to continuously rotate;
s4, after the stop block continues to rotate to a position away from the first position, the second electromagnet and the first electromagnet are controlled to lose power, the rotating body, the stop block and the thrust block move upwards under the elastic force of the compression spring until the upper end of the stop block is contacted with the inner wall of the top end of the inner cavity, and the winch is locked;
the winch unlocking sequentially comprises the following steps:
a1, controlling a second electromagnet to be electrified and a first electromagnet to be deenergized, wherein magnetic field force between the second electromagnet and a permanent magnet drives a rotating body and a stop block to rotate;
and A2, after the stop block rotates to the first position, the second electromagnet and the first electromagnet are controlled to lose power, the rotating body, the stop block and the thrust block move upwards under the elastic force of the compression spring until the upper end of the stop block is in contact with the lower end of the upper cover plate and the thrust block is separated from the stop gear, and the winch unlocking is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a constant tension winch locking device which comprises a fixed frame, a guide block, a rotating body and a thrust block, wherein the guide block is of a hollow structure, a mounting hole which is matched with the guide block in an inserted mode is formed in the middle of the fixed frame, an upper cover plate which covers the mounting hole is fixed above the fixed frame, an electromagnet is arranged on the upper end face of the upper cover plate, a permanent magnet corresponding to the electromagnet is arranged at the top of the rotating body, the bottom of the rotating body penetrates through the upper cover plate and then is matched with the top of the thrust block in an inserted mode through a groove formed in the bottom of the upper cover plate, the bottom of the thrust block penetrates through an inner cavity of the guide block and then extends to the outside of the guide block, a return spring is sleeved outside the part of the thrust block, which is located outside the inner cavity, can be clamped with a winch transmission shaft stop gear, when locking is needed, the electromagnet is controlled to be powered on first, then the rotating body and the thrust block are driven to move downwards and compress the return spring until the thrust block is clamped with the stop gear, so that a cable is tensioned with the stop gear in a constant tension force, the winch is firstly controlled, when unlocking is needed, then the electromagnet, the rotating body and the thrust block and the winch is unlocked, the winch is controlled to be unlocked simply, and separated from the winch, and the winch is separated from the winch, so that the winch is separated from the winch. Therefore, the self-locking reliability of the winch is improved.
2. The invention relates to a constant tension winch locking device, wherein a fixed frame is uniformly provided with a plurality of second electromagnets corresponding to permanent magnets along the periphery, the bottom of a rotating body is fixed with a stop block, the top of a thrust block passes through the middle part of the stop block and then is inserted and matched with a groove, the top end of a guide block is provided with a limiting hole communicated with an inner cavity, the limiting hole can be used for the thrust block and the stop block positioned under a first position to pass through, when locking is needed, the second electromagnet is controlled to be powered on, the first electromagnet is powered off, magnetic field force between the second electromagnet and the permanent magnets drives the rotating body, the stop block and the thrust block to move downwards and compress a return spring, then the second electromagnet is controlled to be powered on after the stop block rotates to a first position, magnetic field force between the first electromagnet and the permanent magnets drives the rotating body, the stop block and the thrust block to move downwards and compress the return spring, and the stop block is clamped with a stop gear, the magnetic force between the second electromagnet and the permanent magnet drives the rotator and the stop block to rotate continuously, finally the second electromagnet and the first electromagnet are controlled to lose power after the stop block rotates continuously to leave the first position, the rotator, the stop block and the thrust block move upwards under the elastic force of the compression spring until the upper end of the stop block is contacted with the inner wall of the top end of the inner cavity, the winch is locked, when the winch needs to be unlocked, the second electromagnet is controlled to be powered on, the first electromagnet is powered off, the rotator and the stop block are controlled to rotate by the magnetic force between the second electromagnet and the permanent magnet, then the second electromagnet and the first electromagnet are controlled to lose power after the stop block rotates to the first position, the rotator, the stop block and the thrust block move upwards under the elastic force of the compression spring until the upper end of the stop block is contacted with the lower end of the upper cover plate and the thrust block is separated from the stop gear, the winch unlocking is completed, the mechanical limitation of the stop block and the limit hole to the thrust block is realized by controlling the second electromagnet to lose power, the clamping failure of the thrust block and the stopping gear is prevented when the first electromagnet loses power, and the winch self-locking reliability is further improved. Therefore, the self-locking performance of the winch is further improved.
Drawings
Fig. 1 is a schematic view of the locking operation of the present invention.
Fig. 2 is a working schematic diagram of the unlocking process of the invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is a top view of the present invention.
Fig. 5 is a sectional view of the rotator in fig. 1.
Fig. 6 is a top view of the rotary body of fig. 1.
In the figure, a fixed frame 1, a mounting hole 11, an upper cover plate 12, a guide block 2, an inner cavity 21, a limiting hole 22, a rotating body 3, a groove 31, a stop block 32, a rotating handle 33, a thrust block 4, a retainer ring 41, a first electromagnet 5, a permanent magnet 6, a return spring 7, a second electromagnet 8 and a stop gear 9.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Referring to fig. 1 to 6, a constant tension winch locking device includes a fixing frame 1, a guide block 2, a rotating body 3, and a thrust block 4, wherein the guide block 2 is of a hollow structure, a mounting hole 11 which is matched with the guide block 2 in an insertion manner is formed in the middle of the fixing frame 1, an upper cover plate 12 which covers the mounting hole 11 is fixed above the fixing frame 1, an electromagnet 5 is arranged on the upper end surface of the upper cover plate 12, a permanent magnet 6 which corresponds to the electromagnet 5 is arranged at the top of the rotating body 3, the bottom of the rotating body 3 passes through the upper cover plate 12 and then is matched with the top of the thrust block 4 in an insertion manner through a groove 31 formed in the upper cover plate, the bottom of the thrust block 4 passes through an inner cavity 21 of the guide block 2 and then extends to the outside of the guide block 2, a return spring 7 is sleeved outside a part of the thrust block 4 which is located in the inner cavity 21, and the part of the thrust block 4 which is located outside the inner cavity 21 can be connected with a winch transmission shaft stop gear 9 in a clamping manner.
The fixed frame 1 is evenly provided with a plurality of second electromagnets 8 corresponding to the permanent magnets 6 along the circumference, the bottom of the rotating body 3 is fixed with a stop block 32, the top of the thrust block 4 penetrates through the middle of the stop block 32 and then is in insertion fit with the groove 31, the top end of the guide block 2 is provided with a limiting hole 22 communicated with the inner cavity 21, and the limiting hole 22 can be used for the thrust block 4 and the stop block 32 in the first position to penetrate.
A retainer ring 41 is fixed on the outer wall of the thrust block 4, the upper surface of the retainer ring 41 is in contact with the lower surface of the stopper 32, the lower surface of the retainer ring 41 is connected with the top of the return spring 7, the bottom of the return spring 7 is connected with the inner wall of the bottom end of the inner cavity 21, and the limit hole 22 can be penetrated by the retainer ring 41.
The top of rotator 3 is provided with twist grip 33, twist grip 33's middle part is through the top fixed connection of bolt with rotator 3, the quantity of permanent magnet 6 is 2 and the symmetry sets up on the lower surface at twist grip 33 both ends.
The rotating body 3 is of a cylindrical structure, the first electromagnet 5 is of an annular structure, and the central axis of the first electromagnet 5 and the central axis of the rotating body 3 are located on the same straight line.
The number of the second electromagnets 8 is 4 and the second electromagnets are uniformly arranged on the periphery of the fixing frame 1.
A control method of a constant tension winch locking device comprises winch locking and winch unlocking;
the winch is locked as follows: controlling the first electromagnet 5 to be electrified, driving the rotating body 3 and the thrust block 4 to move downwards and compressing the return spring 7 by the magnetic field force between the first electromagnet 5 and the permanent magnet 6 until the thrust block 4 is clamped with the stop gear 9, and completing winch locking;
the winch is unlocked as follows: and controlling the first electromagnet 5 to lose power, and enabling the rotating body 3 and the thrust block 4 to move upwards under the elastic force of the return spring 7 until the thrust block 4 is separated from the stop gear 9, so that the winch is unlocked.
The fixed frame 1 is uniformly provided with a plurality of second electromagnets 8 corresponding to the permanent magnets 6 along the circumference, the bottom of the rotating body 3 is fixed with a stop block 32, the top of the thrust block 4 penetrates through the middle part of the stop block 32 and then is inserted and matched with the groove 31, the top end of the guide block 2 is provided with a limiting hole 22 communicated with the inner cavity 21, and the limiting hole 22 can be penetrated by the thrust block 4 and the stop block 32 positioned at the first position;
the winch locking sequentially comprises the following steps:
s1, controlling a second electromagnet 8 to be electrified and a first electromagnet 5 to be deenergized, wherein magnetic field force between the second electromagnet 8 and a permanent magnet 6 drives a rotating body 3 and a stop block 32 to rotate;
s2, after the stop block 32 rotates to the first position, the second electromagnet 8 is controlled to be powered off, the first electromagnet 5 is controlled to be powered on, and the magnetic field force between the first electromagnet 5 and the permanent magnet 6 drives the rotating body 3, the stop block 32 and the thrust block 4 to move downwards and compress the return spring 7;
s3, the stop block 32 penetrates through the limiting hole 22, the thrust block 4 is clamped with the stop gear 9, then the second electromagnet 8 is controlled to be electrified, and the magnetic field force between the second electromagnet 8 and the permanent magnet 6 drives the rotating body 3 and the stop block 32 to continuously rotate;
s4, after the stop block 32 continues to rotate to a position away from the first position, the second electromagnet 8 and the first electromagnet 5 are controlled to lose power, the rotating body 3, the stop block 32 and the thrust block 4 move upwards under the elastic force of the compression spring 7 until the upper end of the stop block 32 is in contact with the inner wall of the top end of the inner cavity 21, and the winch is locked;
the winch unlocking sequentially comprises the following steps:
a1, controlling a second electromagnet 8 to be electrified and a first electromagnet 5 to be deenergized, wherein magnetic field force between the second electromagnet 8 and a permanent magnet 6 drives a rotating body 3 and a stop block 32 to rotate;
and A2, after the stop block 32 rotates to the first position, controlling the second electromagnet 8 and the first electromagnet 5 to lose power, and enabling the rotating body 3, the stop block 32 and the thrust block 4 to move upwards under the elastic force of the compression spring 7 until the upper end of the stop block 32 is contacted with the lower end of the upper cover plate 12 and the thrust block 4 is separated from the stop gear 9, so that the winch unlocking is completed.
The principle of the invention is illustrated as follows:
the constant tension winch locking device can complete self-locking of a constant tension winch and tensioning of a cable together with an existing transmission self-locking device on the winch, so that the problem that the safety and stability of a winch hull are affected due to the fact that the existing transmission self-locking device fails to lock is avoided.
Example 1:
referring to fig. 1 to 5, a constant tension winch locking device includes a fixed frame 1, a guide block 2, a rotator 3, a thrust block 4, a first electromagnet 5, and a permanent magnet 6 corresponding to the first electromagnet 5, wherein the guide block 2 is of a hollow structure, a mounting hole 11 which is in insertion fit with the guide block 2 is formed in the middle of the fixed frame 1, an upper cover plate 12 which covers the mounting hole 11 is fixed above the fixed frame 1, the rotator 3 is of a cylindrical structure, a rotating handle 33 is arranged at the top of the rotator and is fixedly connected with the middle of the rotating handle 33 through a bolt, a groove 31 formed in the upper cover plate 12 is inserted into and matched with the top of the thrust block 4 after the bottom of the rotator passes through the upper cover plate 12, the bottom of the thrust block 4 extends to the outside of the guide block 2 after passing through an inner cavity 21 of the guide block 2, a part of the thrust block 4, which is located in the inner cavity 21, is externally sleeved with a spring 7, the part of the thrust block 4, which is located outside the inner cavity 21, can be clamped with a winch transmission shaft stopping gear 9, the first electromagnet 5 is arranged on the upper end surface of the upper cover plate 12, the first electromagnet 5 is of an annular structure, the central shaft of the central axis of the rotator and the central axis of the central axis 3 are located on the same line, and the central axis of the central axis 3, and the permanent magnet 6 are symmetrically arranged on the two rotating handles 33;
the control method of the constant-tension winch locking device comprises winch locking and winch unlocking;
the winch is locked as follows: controlling the first electromagnet 5 to be electrified, driving the rotating body 3 and the thrust block 4 to move downwards and compressing the return spring 7 by the magnetic field force between the first electromagnet 5 and the permanent magnet 6 until the thrust block 4 is clamped with the stop gear 9, and completing winch locking;
the winch is unlocked as follows: and controlling the first electromagnet 5 to lose power, and enabling the rotating body 3 and the thrust block 4 to move upwards under the elastic force of the return spring 7 until the thrust block 4 is separated from the stop gear 9, so that the winch is unlocked.
Example 2:
the difference from example 1 is that:
referring to fig. 6, the periphery of the fixing frame 1 is provided with a second electromagnet 8 corresponding to the permanent magnet 6, the bottom of the rotating body 3 is fixed with a stopper 32, the top of the thrust block 4 passes through the middle of the stopper 32 and then is in insertion fit with the groove 31, the top of the guide block 2 is provided with a limiting hole 22 communicated with the inner cavity 21, and the limiting hole 22 is used for the thrust block 4 and the stopper 32 in the first position to pass through;
the winch locking device specifically comprises the following steps:
s1, controlling the second electromagnet 8 to be electrified and the first electromagnet 5 to be deenergized, and driving the rotating body 3 and the stop block 32 to rotate by magnetic field force between the second electromagnet 8 and the permanent magnet 6;
s2, after the stop block 32 rotates to the first position, controlling the second electromagnet 8 to lose power and the first electromagnet 5 to be powered on, and driving the rotating body 3, the stop block 32 and the thrust block 4 to move downwards and compress the return spring 7 by the magnetic field force between the first electromagnet 5 and the permanent magnet 6;
s3, the stop block 32 penetrates through the limiting hole 22, the thrust block 4 is clamped with the stop gear 9, then the second electromagnet 8 is controlled to be electrified, and the magnetic field force between the second electromagnet 8 and the permanent magnet 6 drives the rotating body 3 and the stop block 32 to continuously rotate;
and S4, after the stop block 32 continuously rotates to a position away from the first position, controlling the second electromagnet 8 and the first electromagnet 5 to lose power, and enabling the rotating body 3, the stop block 32 and the thrust block 4 to move upwards under the elastic force of the compression spring 7 until the upper end of the stop block 32 is in contact with the inner wall of the top end of the inner cavity 21, so that the winch is locked.
The winch unlocking method specifically comprises the following steps:
a1, controlling a second electromagnet 8 to be electrified and a first electromagnet 5 to be deenergized, wherein magnetic field force between the second electromagnet 8 and a permanent magnet 6 drives a rotating body 3 and a stop block 32 to rotate;
and A2, after the stop block 32 rotates to the first position, controlling the second electromagnet 8 and the first electromagnet 5 to lose power, and enabling the rotating body 3, the stop block 32 and the thrust block 4 to move upwards under the elastic force of the compression spring 7 until the upper end of the stop block 32 is in contact with the lower end of the upper cover plate 12 and the thrust block 4 is separated from the stop gear 9, so that the winch unlocking is completed.
Example 3:
the difference from example 2 is that:
a retainer ring 41 is fixed on the outer wall of the thrust block 4, the upper surface of the retainer ring 41 is in contact with the lower surface of the stop block 32, the lower surface of the retainer ring 41 is connected with the top of the return spring 7, the bottom of the return spring 7 is connected with the inner wall of the bottom end of the inner cavity 21, and the limiting hole 22 can be used for the retainer ring 41 to pass through.

Claims (6)

1. A constant tension winch locking device is characterized in that:
the locking device comprises a fixed frame (1), a guide block (2), a rotating body (3) and a thrust block (4), wherein the guide block (2) is of a hollow structure, a mounting hole (11) which is matched with the guide block (2) in an inserting mode is formed in the middle of the fixed frame (1), an upper cover plate (12) which covers the mounting hole (11) is fixed above the fixed frame (1), a first electromagnet (5) is arranged on the upper end face of the upper cover plate (12), a permanent magnet (6) which corresponds to the first electromagnet (5) is arranged at the top of the rotating body (3), the bottom of the rotating body (3) penetrates through the upper cover plate (12) and then is matched with the top of the thrust block (4) in an inserting mode through a groove (31) formed in the rotating body, the bottom of the thrust block (4) penetrates through an inner cavity (21) of the guide block (2) and then extends to the outside of the guide block (2), a return spring (7) is sleeved outside the part, and the part, located outside the thrust block (4) can be clamped with a winch transmission shaft (9);
the fixed frame (1) is evenly provided with a plurality of second electromagnets (8) corresponding to the permanent magnets (6) along the periphery of the fixed frame, a stop block (32) is fixed at the bottom of the rotating body (3), the top of the thrust block (4) penetrates through the middle of the stop block (32) and then is matched with the groove (31) in an inserted mode, a limiting hole (22) communicated with the inner cavity (21) is formed in the top end of the guide block (2), and the limiting hole (22) can be used for the thrust block (4) and the stop block (32) located under the first position to penetrate.
2. The constant tension winch locking device according to claim 1, wherein: fixed with retaining ring (41) on the outer wall of thrust block (4), the upper surface of retaining ring (41) contacts with the lower surface of dog (32), and the lower surface of retaining ring (41) is connected with return spring (7)'s top, return spring (7)'s bottom is connected with the bottom inner wall of inner chamber (21), spacing hole (22) still can supply retaining ring (41) to pass.
3. A constant tension winch locking arrangement as claimed in claim 1 or claim 2, wherein: the top of rotator (3) is provided with twist grip (33), the top fixed connection of bolt and rotator (3) is passed through at the middle part of twist grip (33), the quantity of permanent magnet (6) is 2 and the symmetry sets up on the lower surface at twist grip (33) both ends.
4. A constant tension winch locking arrangement as claimed in claim 1 or claim 2, wherein: the rotating body (3) is of a cylindrical structure, the first electromagnet (5) is of an annular structure, and the central axis of the first electromagnet (5) and the central axis of the rotating body (3) are located on the same straight line.
5. A constant tension winch locking arrangement as claimed in claim 1 or claim 2, wherein: the number of the second electromagnets (8) is 4 and the second electromagnets are uniformly arranged on the periphery of the fixing frame (1).
6. A method of controlling the constant tension drawworks locking apparatus of claim 1, wherein:
the control method comprises winch locking and winch unlocking;
the winch locking sequentially comprises the following steps:
s1, controlling a second electromagnet (8) to be electrified and a first electromagnet (5) to be deenergized, wherein magnetic field force between the second electromagnet (8) and a permanent magnet (6) drives a rotating body (3) and a stop block (32) to rotate;
s2, after the stop block (32) rotates to the first position, the second electromagnet (8) is controlled to be powered off, the first electromagnet (5) is controlled to be powered on, and magnetic field force between the first electromagnet (5) and the permanent magnet (6) drives the rotating body (3), the stop block (32) and the thrust block (4) to move downwards and compress the return spring (7);
s3, the stop block (32) penetrates through the limiting hole (22), the thrust block (4) is clamped with the stop gear (9) and then controls the second electromagnet (8) to be electrified, and magnetic field force between the second electromagnet (8) and the permanent magnet (6) drives the rotating body (3) and the stop block (32) to continuously rotate;
s4, after the stop block (32) continues to rotate to a position away from the first position, the second electromagnet (8) and the first electromagnet (5) are controlled to lose power, the rotating body (3), the stop block (32) and the thrust block (4) move upwards under the elastic force of the compression spring (7) until the upper end of the stop block (32) is in contact with the inner wall of the top end of the inner cavity (21), and the winch is locked completely;
the winch unlocking sequentially comprises the following steps:
a1, controlling a second electromagnet (8) to be electrified and a first electromagnet (5) to be deenergized, wherein magnetic field force between the second electromagnet (8) and a permanent magnet (6) drives a rotating body (3) and a stop block (32) to rotate;
a2, controlling the second electromagnet (8) and the first electromagnet (5) to lose power after the stop block (32) rotates to the first position, enabling the rotating body (3), the stop block (32) and the thrust block (4) to move upwards under the elastic force of the compression spring (7) until the upper end of the stop block (32) is in contact with the lower end of the upper cover plate (12) and the thrust block (4) is separated from the stop gear (9), and completing winch unlocking.
CN202111093889.9A 2021-09-17 2021-09-17 Constant tension winch locking device and control method thereof Active CN113788419B (en)

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CN117430041B (en) * 2023-12-20 2024-02-27 天津津岛船务有限公司 Gear box of marine constant tension winch

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SE536933C2 (en) * 2011-11-11 2014-11-04 Se Dev Ab Electronically and manually maneuverable spanlet lock with guides
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