阅读说明：本技术 一种恒张力绞车锁紧装置及其控制方法 (Constant tension winch locking device and control method thereof ) 是由 李建正 徐晨昕 朱江森 叶志坚 吴诗寒 于 2021-09-17 设计创作，主要内容包括：一种恒张力绞车锁紧装置,包括固定架、导向块、旋转体、止推块,固定架中部开设有与导向块插入配合的安装孔,固定架上方固定有上盖板,旋转体的底部穿过上盖板后与止推块的顶部插入配合,止推块的底部穿过导向块内腔后延伸至导向块外部,止推块位于内腔外的部分可与止动齿轮相卡接,止推块位于内腔内的部分外套设有回位弹簧,上盖板上端面、旋转体顶部分别设置有电磁铁、永磁铁。锁紧时,控制一号电磁铁失电,使旋转体、止推块受磁力作用向下运动并压缩回位弹簧,直至止推块与止动齿轮相卡接,解锁时,控制一号电磁铁失电,使旋转体、止推块受到回位弹簧的弹力向上运动,直至止推块与止动齿轮相分离,结构简单、可靠性高。(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.)

1. The constant tension winch locking device is characterized in that: the locking device comprises 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 inserting 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), a first electromagnet (5) is arranged on the upper end surface 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 manner through a groove (31) formed in the upper cover plate, 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), and a return spring (7) is sleeved outside the part of the thrust block (4) which is positioned in the inner cavity (21), the part of the thrust block (4) outside the inner cavity (21) can be clamped with the stop gear (9) of the winch transmission shaft.

2. The constant tension winch locking device as claimed in claim 1, wherein: the fixed frame (1) is evenly provided with a plurality of second electromagnets (8) corresponding to the permanent magnets (6) along the periphery, 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 matched with the groove (31) in an inserting mode, 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) located at the first position to penetrate.

3. The constant tension winch locking device as claimed in claim 2, wherein: the outer wall of the thrust block (4) is fixedly provided with a check ring (41), the upper surface of the check ring (41) is in contact with the lower surface of the stop block (32), the lower surface of the check 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 used for the check ring (41) to penetrate.

4. A constant tension winch locking device as claimed in any one of claims 1 to 3, 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.

5. A constant tension winch locking device as claimed in any one of claims 1 to 3, 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.

6. A constant tension winch locking arrangement as claimed in claim 2 or claim 3, 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).

7. A method of controlling the constant tension drawworks locking apparatus of claim 1, wherein:

the method 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 compress the return spring (7) by 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 action of 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.

8. The method for controlling the constant tension winch locking device according to claim 7, wherein:

the fixed frame (1) is uniformly provided with a plurality of second electromagnets (8) corresponding to the permanent magnets (6) along the periphery thereof, 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) positioned at the first position to penetrate;

the winch locking sequentially comprises the following steps:

s1, controlling the second electromagnet (8) to be electrified and the first electromagnet (5) to be deenergized, wherein 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 rotate;

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, 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 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) and 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 the second electromagnet (8) to be electrified and the first electromagnet (5) to be deenergized, wherein 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 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.

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 achieve the above 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 second electromagnets corresponding to the permanent magnets along the periphery, 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 matched with the groove in an inserted mode, the top end 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 located at the first position to penetrate through.

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 stop block, the lower surface of the check ring is connected with the top of the 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 rotator is cylindrical structure, No. one electro-magnet is cyclic annular structure, and No. one electro-magnet's center axis and the center axis of rotator are located collinear.

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 is unlocked as follows: 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 the second electromagnet to be electrified and the first electromagnet to be deenergized, and driving the rotating body and the stop block to rotate by the magnetic field force between the second electromagnet and the permanent magnet;

s2, after the stop block rotates to the first position, controlling the second electromagnet to lose power and the first electromagnet to be powered on, and driving the rotating body, the stop block and the thrust block to move downwards and compress the return spring by the 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 the second electromagnet to be electrified and the first electromagnet to be deenergized, and driving the rotating body and the stop block to rotate by the magnetic field force between the second electromagnet and the permanent magnet;

a2, controlling the second electromagnet and the first electromagnet to lose power after the stop block rotates to the first position, enabling the rotating body, the stop block and the thrust block to 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 completing unlocking of the winch.

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, the middle part of the fixed frame is provided with a mounting hole which is in insertion fit with the guide block, an upper cover plate which covers the mounting hole is fixed above the fixed frame, the upper end surface of the upper cover plate is provided with an electromagnet, the top of the rotating body is provided with a permanent magnet corresponding to the electromagnet, the bottom of the rotating body penetrates through the upper cover plate and then is in insertion fit with the top of the thrust block through a groove formed in 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 positioned in the inner cavity, the part of the thrust block which is positioned outside the inner cavity can be clamped with a winch transmission shaft stop gear, when locking is needed, the electromagnet is firstly controlled to be electrified, then the magnetic field force between the electromagnet and the permanent magnet drives the rotating body, The anti-thrust block moves downwards and compresses the return spring until the anti-thrust block is connected with the stop gear in a clamped mode, a cable is tensioned with constant tension, winch locking is completed, when unlocking is needed, the first electromagnet is controlled to lose power, then the rotating body and the anti-thrust block move upwards under the elastic force of the return spring until the anti-thrust block is separated from the stop gear, and winch unlocking is completed. 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 locking is completed, when the winch is required to be unlocked, the second electromagnet is controlled to be powered on, the first electromagnet is powered off, the rotator and the first electromagnet are controlled to rotate, then the second electromagnet and the first electromagnet are controlled to be powered off 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 design realizes the mechanical limit of the stop block and the limit hole pair by controlling the second electromagnet to be powered off, the clamping failure of the thrust block and the stop gear when the electromagnet I is powered off is prevented, and the self-locking reliability of the winch 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, the constant tension winch locking device comprises a fixed frame 1, a guide block 2, a rotating body 3 and a thrust block 4, the guide block 2 is of a hollow structure, the middle part of the fixed frame 1 is provided with a mounting hole 11 which is inserted and matched with the guide block 2, an upper cover plate 12 which covers the mounting hole 11 is fixed above the fixed frame 1, the upper end surface of the upper cover plate 12 is provided with a first electromagnet 5, the top of the rotating body 3 is provided with a permanent magnet 6 corresponding to the first electromagnet 5, the bottom of the rotating body 3 passes through the upper cover plate 12 and then is inserted and matched with the top of the thrust block 4 through a groove 31 arranged on the rotating body, the bottom of the thrust block 4 passes through the 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, located in the inner cavity 21, of the thrust block 4, and the part, located outside the inner cavity 21, of the thrust block 4 can be clamped with the winch transmission shaft stop gear 9.

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 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.

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 passes 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 used for the thrust block 4 and the stop block 32 positioned at the first position to pass through;

the winch locking sequentially 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 the 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, 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 stopper 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 stopper 32 to continuously rotate;

s4, after the stop block 32 continues to rotate 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 sequentially comprises the following steps:

a1, 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 the magnetic field force between the second electromagnet 8 and the permanent magnet 6;

a2, controlling the second electromagnet 8 and the first electromagnet 5 to lose power after the stop block 32 rotates to the first position, and moving the rotating body 3, the stop block 32 and the thrust block 4 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, thus completing the unlocking of the winch.

The principle of the invention is illustrated as follows:

the constant tension winch locking device can complete self-locking of the constant tension winch and tensioning of the cable together with the 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 failure of self-locking of the existing transmission self-locking device is avoided.

Example 1:

referring to fig. 1 to 5, a constant tension winch locking device includes a fixed mount 1, a guide block 2, a rotating body 3, a thrust block 4, an electromagnet 5, and a permanent magnet 6 corresponding to the electromagnet 5, wherein the guide block 2 is a hollow structure, a mounting hole 11 inserted and matched with the guide block 2 is formed in the middle of the fixed mount 1, an upper cover plate 12 covering the mounting hole 11 is fixed above the fixed mount 1, the rotating body 3 is a cylindrical structure, a rotating handle 33 is arranged at the top of the rotating body and 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 and matched with the top of the thrust block 4 after the bottom of the rotating body passes through an inner cavity 21 of the guide block 2 and extends to the outside of the guide block 2, a spring 7 is sleeved outside a part of the thrust block 4 located in the inner cavity 21, and a part of the thrust block 4 located outside the inner cavity 21 can be clamped with a winch transmission shaft stop gear 9, the first electromagnet 5 is arranged on the upper end face of the upper cover plate 12, the first electromagnet 5 is of an annular structure, the central axis of the first electromagnet is positioned on the same straight line with the central axis of the rotating body 3, and the number of the permanent magnets 6 is 2 and is symmetrically arranged on the lower surfaces of the two ends of the rotating handle 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 the 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, 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 stopper 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 stopper 32 to continuously rotate;

and S4, after the stop block 32 continues to rotate 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 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 the magnetic field force between the second electromagnet 8 and the permanent magnet 6;

a2, controlling the second electromagnet 8 and the first electromagnet 5 to lose power after the stop block 32 rotates to the first position, and moving the rotating body 3, the stop block 32 and the thrust block 4 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, thus completing the unlocking of the winch.

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.