Safer winch and its stopping method

Abstract

The present invention relates to a winch with higher safety and a braking method thereof, aiming to fundamentally solve the safety hazards existing in existing winches under extreme working conditions. The braking device includes an execution and drive component and a reset component. When the main braking force is insufficient, the execution and drive component can be automatically started, and the auxiliary braking force is applied to the drum by means of the structural design to ensure that the drum stops rotating reliably; after the load is removed, the reset component automatically restores the system to the initial standby state. In terms of structural design, the invention uses a number of innovative concepts such as a push rod-bevel groove matching structure, a braking groove diameter surface and a gentle slope surface, and component material optimization, which effectively improves the reliability and adaptability of the braking device. At the same time, the specific steps of the braking method are also clearly specified to ensure that the entire process is efficient and orderly. By introducing the automatic auxiliary braking function of the braking device, the innovative winch comprehensively enhances the safety protection performance of the product and effectively guarantees the safety of people and equipment.

Description

Technical Field

[0001] The invention relates to the technical field of winches, and in particular to an innovative winch structure and a braking method thereof that improves the safety performance of winch braking.

[0002] In the current design and application of electric winches, the brake device plays a vital role. Its core function is to reliably lock the drum when the winch stops rotating to ensure the load stability and safety of the traction rope and avoid potential risks caused by traction failure.

[0003] The authorization announcement number CN203624946U published in the Chinese patent document shows a winch brake device with improved characteristics, which consists of an active seat, a reverse expansion torsion spring, a passive seat and a brake sleeve. The active seat and the passive seat can rotate relative to each other, and the reverse expansion torsion spring connects the two and maintains friction contact with the inner wall of the brake sleeve under normal conditions. When the brake is activated, the torsion spring expands, increasing friction and locking the winch. In addition, a flange is designed on the passive seat to prevent the brake from failing when the torsion spring is damaged, enhancing the overall reliability and safety.

[0004] Although the existing design provides a high level of safety, there are still potential risks under extreme conditions, such as heavy loads, high speeds or high temperatures. In these cases, the friction between the reverse expansion torsion spring and the brake sleeve may not provide sufficient braking force, increasing the risk of accidents. In order to further improve system safety and optimize performance, we need to design a more reliable and powerful braking mechanism, or develop auxiliary braking devices to intervene at critical moments to avoid or reduce accidents. Through these improvements, we can ensure that the system can operate safely and efficiently under various conditions to the greatest extent possible. Summary of the invention

[0005] In view of the above problems, the present invention provides an innovative safety winch, which comprehensively improves the braking reliability and safety performance of the winch by arranging a braking device that can automatically start and apply auxiliary braking force to the drum, and intervenes in braking when the main braking force is insufficient.

[0006] The invention objective of the present invention is achieved through the following technical solutions: a winch with higher safety, whose brake structure includes a main brake device and a brake stop device that follows the reverse expansion torsion spring action in the main brake device and intervenes to brake the drum; the brake stop device includes an execution and drive component and a reset component, wherein the execution and drive component is used to apply auxiliary braking force to the drum when the main brake force is insufficient, and the reset component is used to automatically reset the execution and drive component to a standby state after braking. The beneficial effect is that by arranging the brake stop device between the main brake device and the drum, when the main brake force is insufficient, it can automatically intervene to implement auxiliary braking on the drum, thereby greatly improving the braking reliability and safety performance of the winch, and effectively avoiding the occurrence of dangerous accidents.

[0007] Preferably, the execution and driving assembly includes a movable sleeve, a start trigger, a start actuator, an actuator and a stop groove on the inner wall of the reel;

[0008] The movable sleeve is annularly arranged on the outer ring of the brake sleeve and extends a protruding section toward the free end of the brake sleeve; the start trigger is fixed on the inner wall of the movable sleeve and keeps contact with the reverse expansion torsion spring; the start actuator is fixed on the protruding section; the actuator cooperates with the start actuator and can be movably arranged in the mounting hole opened on the extension section of the brake sleeve. The beneficial effect is: the core structure of the brake stopping device is clarified, including the execution and driving components applying auxiliary braking force to the reel, and the reset component automatically resets the system after braking, which is linked together, orderly and efficient.

[0009] Preferably, the stop grooves are arranged in an array along the circumference of the inner wall of the reel and correspond to the position of the actuator. The beneficial effect is that the stop grooves are arranged corresponding to the position of the actuator, which is conducive to the actuator being efficiently inserted into the stop reel to stop the rotation.

[0010] Preferably, the start trigger member protrudes toward the center of the movable sleeve, and the height of the protrusion is flush with the inner wall of the brake sleeve. The beneficial effect is that the protrusion structure of the start trigger member is flush with the inner wall of the brake sleeve, ensuring smooth and reliable contact between it and the reverse expansion torsion spring.

[0011] Preferably, the mounting hole is provided with a guard on the side facing the reel, and a mechanism for pushing the actuator downward is provided on the guard. The beneficial effect is that the guard is provided on the mounting hole and a space for the mechanism for pushing the actuator downward is reserved, which is conducive to compact structural arrangement and reliable falling of the actuator.

[0012] Preferably, the mating part on the start-up actuator is a rod-shaped member extending along the axial direction of the brake sleeve, and the actuator is provided with a mating groove from high to low that is mating with the rod-shaped member. The beneficial effect is that the start-up actuator adopts an innovative design of the rod-shaped member and the mating groove, which can accurately control the movement position of the actuator.

[0013] Preferably, one side of the stop groove is a stop action surface when in contact with the actuator, and the other side is an inclined gentle slope surface. The beneficial effect is that the design of the action surface and gentle slope surface of the stop groove realizes the integration of the dual functions of "stop" and "reset".

[0014] Preferably, the reset assembly comprises a long hole opened on the movable sleeve and an elastic member arranged in the long hole, one end of the elastic member is fixed, and the other end abuts against the movable sleeve to keep the movable sleeve rotating. The beneficial effect is that the design of the reset assembly enables the movable sleeve to automatically reset after braking, avoiding manual intervention.

[0015] Preferably, the brake sleeve is provided with a first movable groove for the activation trigger to move and a second movable groove for the activation actuator to move in a radial direction. The beneficial effect is that the movable groove is provided on the brake sleeve, which provides sufficient movable space for the activation trigger and the activation actuator.

[0016] A method for stopping the winch using the above-mentioned method comprises the following steps:

[0017] S1. During normal operation, the elastic member causes the movable sleeve to rotate in the opposite direction of the start trigger member, and the actuator is completely retracted into the mounting hole and is in a standby state;

[0018] S2. When the main brake force is insufficient to stop the reel from rotating, the still rotating reverse torsion spring continues to push the start trigger to overcome the force of the elastic member;

[0019] S3. The trigger member pushes the movable sleeve toward the free end, and the actuator drives the actuator to disengage from the matching groove and fall;

[0020] S4. The stop groove on the rotating drum captures the falling actuator, so that the actuator temporarily connects the drum to the brake sleeve;

[0021] S5. The rotational force of the reel is absorbed by the brake sleeve, thereby realizing auxiliary braking of the reel. The beneficial effect is that the specific steps of the braking method are clarified, orderly and reliable, and the braking device is ensured to intervene efficiently and realize auxiliary braking.

[0022] As preferably, also comprise the following steps:

[0023] 1. After the load is removed, when the reel rotates in the opposite direction, the gentle slope in the stop groove lifts up the actuator, and at the same time, the elastic member pushes the rod-shaped member to reinsert into the matching groove;

[0024] 2. The actuator is completely out of the stop groove, and the system automatically resets to the initial standby state. The beneficial effect is that the automatic reset step after the stop improves the convenience of use and avoids manual intervention.

[0025] In summary, the present invention has the following advantages compared with the prior art:

[0026] The present invention discloses a winch with higher safety, in which a brake structure is provided with a stopping device between the main brake device and the drum. When the main brake force is insufficient, the stopping device can be automatically activated and apply auxiliary braking force to the drum, thereby greatly improving the overall braking reliability and safety performance of the winch and effectively avoiding the occurrence of dangerous accidents.

[0027] The brake device consists of an execution and drive component and a reset component, which are closely linked to each other and complete the functions of auxiliary braking and automatic reset in an orderly and efficient manner. Among them, the execution and drive component can accurately sense the lack of main brake force through a series of closely matched parts, thereby starting and applying auxiliary braking to the reel; and the reset component automatically resets the entire system after braking, avoiding manual intervention and improving convenience.

[0028] In addition, the structural design of the invention embodies a large number of innovative concepts and optimization ideas, such as the push rod-bevel groove matching structure, the stop groove diameter surface and the gentle slope surface design, which can accurately control the movement of components and realize the organic unity of the "stop" and "reset" functions. At the same time, the optimized layout of the mounting holes, the selection of component materials and other details have further enhanced the reliability and adaptability of the stop device.

[0029] It is worth mentioning that the invention also discloses a corresponding braking method, clearly specifies the specific steps for the intervention of the braking device, and ensures the efficient and reliable implementation of the auxiliary braking and resetting process.

[0030] In summary, the invention innovatively solves the problem of insufficient braking force of traditional winches under extreme working conditions. By introducing the automatic auxiliary braking function, the safety protection performance of winch products is comprehensively enhanced, effectively ensuring the safety of people and equipment; at the same time, the optimized structural design and braking method also demonstrate outstanding engineering and technical strength, which will surely bring users an excellent use experience. The invention has extremely high practical value and promotion and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the winch of the present invention;

[0032] Figure 2 It is a left side view of the winch of the present invention;

[0033] Figure 3 yes Figure 2 Axial view of the entire section along AA;

[0034] Figure 4 It is a schematic diagram of the structure of the reel;

[0035] Figure 5 It is a full-section axonometric view of the reel;

[0036] Figure 6 This is a schematic diagram of the installation position of the brake sleeve;

[0037] Figure 7 It is an exploded view of some parts of the execution and drive assembly and the reset assembly;

[0038] Figure 8 It is a schematic diagram of the position of the stopping device after installation in the main brake device;

[0039] Fig. 9 The reel is cut and removed in two parts to show the positional relationship of the components in the stopping device. In this figure, the rod-shaped member has left the matching groove and the actuator will fall;

[0040] Fig.10 It is a contrast Fig. 9 The actuator falls down to the stopping groove, at which time, the opening portion of the matching groove and the position of the rod-shaped member still basically correspond.

[0041] The serial numbers in the figure are: main brake device 001, reel 002, brake sleeve 01, mounting hole 02, reverse expansion torsion spring 03, first movable groove 04, second movable groove 05, braking device 1, execution and driving assembly 11, movable sleeve 112, starting trigger member 113, starting actuator 114, actuator 115, braking groove 116, rod-shaped member 117, matching groove 118, reset assembly 12, long hole 121, elastic member 122, guard 021. DETAILED DESCRIPTION

[0042] First of all, it should be noted that the following will illustrate the structural composition, characteristics and advantages of the outdoor display stand with intelligent wind-resistant and fast-retracting function according to the present invention by way of example, but all descriptions should not be used to form any limitation on the present invention. In this article, the technical terms "first" and "second" are only used for distinguishing purposes and are not intended to indicate their order and relative importance. The technical term "connected (or connected, etc.)" covers the direct and / or indirect connection of a component to another component.

[0043] In addition, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, the present invention still allows any combination or deletion between these technical features (or their equivalents) without any technical obstacles, so it should be considered that these more embodiments according to the present invention are also within the scope of the present invention. In addition, in order to simplify the drawings, the same or similar parts and features may be marked only in one or several places in the same drawing.

[0044] Example 1

[0045] The present application discloses a winch with better safety performance. Compared with the prior art, the innovative design adds an auxiliary stopping device 1 between the traditional brake device 001 and the winch drum 002. The stopping device 1 can be automatically activated when the braking force of the main brake device 001 is insufficient to completely stop the drum 002, and provide additional braking force for the main brake device 001, thereby ensuring that the winch is effectively stopped and preventing dangerous accidents.

[0046] Below are all the attached Figure 1-10 First, as shown in the attached Figure 1-3 As shown, the stopping device 1 is arranged between the main brake device 001 and the reel 002. When the reel 002 is operating under extreme conditions such as overload, high speed or high temperature, the main brake device 001 may have insufficient braking force. At this time, the stopping device 1 can sense that the reel 002 is still rotating, that is, the braking force is invalid, and thus automatically starts and applies additional braking force to the reel 002 to ensure that the reel 002 can completely stop operating.

[0047] The main part of the innovative winch braking device 1 is installed between the extension section of the brake sleeve 01 of the main brake device 001 and the drum 002. It specifically includes the following parts:

[0048] 1. In order to reserve installation space for the braking device 1, the free end of the braking sleeve 01 is appropriately extended to form an extension section. The extension section further extends a small section along the axial direction of the braking sleeve 01, and a mounting hole 02 is opened on the small section for mounting the relevant actuators of the braking device 1.

[0049] 2. Two subsystems, namely, the execution and driving component 11 and the reset component 12, are arranged in the outer circumferential area of ​​the brake sleeve 01, including the extension section.

[0050] The execution and driving component 11 includes the following main components:

[0051] The movable sleeve 112 is an annular structure, which is arranged on the outer ring of the brake sleeve 01 and extends a protruding section 111 toward one side of the free end of the brake sleeve. The movable sleeve 112 is the main body of the entire driving component.

[0052] The start trigger 113 is fixedly mounted on the inner wall of the movable sleeve 112 and is used to maintain dynamic contact with the reverse expansion torsion spring 03 in the main brake device 001 to obtain movement information of the reverse expansion torsion spring 03.

[0053] The starting actuator 114 is fixedly mounted on the movable sleeve extending section 111 .

[0054] Actuator 115 - cooperates with the start actuator 114 and is movably installed in the mounting hole 02 up and down.

[0055] Stop groove 116 - At the position corresponding to the actuator 115 on the inner wall of the reel 002, a plurality of stop grooves 116 are arranged in a circular array.

[0056] During operation, the main brake force is insufficient, resulting in the reverse expansion torsion spring 03 being unable to completely stop the reel 002 from rotating. The reverse expansion torsion spring 03 will push the start trigger 113 to move, thereby driving the movable sleeve 112 to move toward the free end. The start actuator 114 on the movable sleeve extension section 111 will then drive the actuator 115 to move downward, and the actuator 115 will be stuck in the stop groove 116, producing a blocking braking effect on the reel 002, thereby completely stopping it from continuing to rotate.

[0057] The start trigger 113 in the execution and driving assembly 11 protrudes a protrusion toward the center direction of the movable sleeve 112. The height of the protrusion is preferably flush with the inner wall of the brake sleeve 01, so as to obtain a proper contact degree with the reverse expansion torsion spring 03.

[0058] The raised surface is made of a material with a certain degree of flexibility, such as rubber, to increase the friction with the reverse expansion torsion spring 03 and maintain the synchronization of the movements of both parties. When the main brake force is insufficient, the still rotating reverse expansion torsion spring 03 will continue to act on the flexible raised surface, driving the start trigger 113 to move toward the free end through the greater friction.

[0059] In this innovative design, by adjusting the height of the protrusion of the starting trigger member 113 and using a flexible material, the contact quality between the trigger member 113 and the reverse expansion torsion spring 03 can be effectively improved, ensuring that the driving input of the reverse expansion torsion spring can be obtained in a timely and reliable manner.

[0060] Among them, in the design of the mounting hole 02, a guard 021 is provided on the side facing the reel 002. The function of the guard 021 is to extend the effective depth of the mounting hole 02 and provide more sufficient support and guidance for the actuator 115.

[0061] When the execution and driving mechanism is started, the start-up actuator 114 pushes the actuator 115 to move toward the reel 002 and snap into the stop groove 116. At this time, the actuator 115 needs to have a sufficiently long stroke to be reliably snapped into the groove. The setting of the guard 021 increases the depth of the mounting hole 02, providing a longer guiding and supporting space for the downward movement of the actuator 115.

[0062] This design optimizes the structure of the mounting hole 02, avoids the risk that the actuator 115 cannot be completely inserted into the stop groove due to limited travel when starting, and ensures that the auxiliary brake can be effectively implemented. At the same time, the presence of the guard 021 also provides reliable guidance and positioning for the up and down reciprocating motion of the actuator 115, further enhancing the reliability of the use of the stop device. In addition, in addition to extending the effective depth to provide sufficient support for the actuator 115, the guard 021 can also be specially provided with a physical space for setting a mechanism for pushing the actuator 115 downward.

[0063] Among them, in the braking device, a matching structure of a push rod and an inclined groove is adopted between the starting actuator 114 and the actuator 115 to control the active position of the actuator 115.

[0064] Specifically:

[0065] The mating portion of the start actuator 114 is a rod-shaped member 117 extending axially along the brake sleeve, and has a circular cross section to facilitate sliding fit.

[0066] The actuator 115 is provided with a matching groove 118 which gradually decreases from high to low. The opening end of the matching groove 118 is at the highest position and gradually decreases toward the inner wall.

[0067] When activated, the rod-shaped member 117 is inserted into and moves along the matching groove 118 , and the rod-shaped member 117 gradually pushes the actuator 115 to linearly lift upward as the insertion depth increases.

[0068] It is worth noting that the assembly direction of the starting actuator 114 and the actuator 115 must be strictly required, that is, when the brake fails, the reverse torsion spring 03 drives the starting trigger 113 to move, and the rod-shaped member 117 must move in the direction of withdrawing from the matching groove 118.

[0069] This innovative push rod-bevel groove matching structure design can effectively convert the driving motion form, converting the linear motion of the starting actuator 114 into a compound motion of the rise and fall of the actuator 115, accurately controlling the position of the actuator 115, and ensuring that it can be reliably engaged in the stop groove 116 to exert a braking effect.

[0070] Among them, in the stopping groove 116 on the inner wall of the reel 002, the side that contacts the actuator 115 and plays a stopping role is called the stopping action surface, which is usually designed to be a diameter surface that is perpendicular or nearly perpendicular to the bottom of the groove.

[0071] The other side opposite to the braking surface is designed to be a gentle slope with a certain inclination. When the brake is applied and the actuator 115 falls into the groove 116, the vertical surface provides a strong resistance, and when the load is removed and the drum rotates in the opposite direction, the gentle slope will lift up the actuator 115.

[0072] Under the push of the gentle slope, an elastic member 122 also applies a thrust to the rod-shaped member 117, so that the rod-shaped member 117 is reinserted into the matching groove 118. Under the dual action of the gentle slope and the elastic member 122, the actuator 115 is automatically separated from the stop groove 116 and restored to the normal standby state, which is convenient for the next use.

[0073] This innovative design not only achieves reliable stopping, but also automatically resets after stopping, avoiding manual intervention and greatly improving the use efficiency. The ingenious design of the inner diameter surface and the inclined surface of the groove, as well as the coordination of the elastic member 122, fully reflects the functionality and practicality.

[0074] The reset assembly 12 includes the following main components:

[0075] 1. Long hole 121 - a long slot on the movable sleeve 112.

[0076] 2. Elastic member 122 - an elastic element arranged in the elongated hole 121, such as a spring.

[0077] One end of the elastic member 122 is fixed, for example, fixed to the brake sleeve 01 , and the other end abuts against the movable sleeve 112 .

[0078] When the braking device is in standby mode, the elastic member 122 remains in a stretched state, applying a continuous rotation torque to the movable sleeve 112 , so that the movable sleeve 112 maintains a rotation trend in the opposite direction to the start trigger member 113 .

[0079] When braking is required, the reverse expansion torsion spring 03 pushes the start trigger 113 to overcome the torque of the elastic member 122 , and the movable sleeve 112 can move normally toward the free end to start the execution and driving component 11 .

[0080] After the braking process is completed, the reel rotates in the opposite direction to make the actuator 115 automatically disengage from the braking groove 116. At this time, the torque of the elastic member 122 will act on the movable sleeve 112 again to pull it back to the original position for standby.

[0081] Therefore, the reset assembly 12 utilizes the simple design of the long hole 121 and the elastic member 122, which not only provides power for the normal operation of the movable sleeve 112, but also can automatically reset after stopping.

[0082] As can be seen from the above, the start trigger 113 and the start actuator 114 of the execution and driving assembly 11 are partially located inside the brake sleeve 01. In order to give them enough activity space, a special activity groove needs to be opened on the brake sleeve 01.

[0083] Specifically, two movable grooves are provided along the radial direction of the brake sleeve 01:

[0084] 1. The first movable groove 04 is used to start the trigger member 113 to follow the reverse expansion torsion spring 03 to move.

[0085] 2. The second active slot 05 - reserves space for starting the action of the actuator 114.

[0086] By opening these two movable grooves in the brake sleeve 01, the start trigger 113 and the start actuator 114 have enough room for movement in the radial direction, and are not restricted by the inner wall of the brake sleeve, and can interact normally with the reverse expansion torsion spring 03 and other components. This design effectively avoids interference and collision between components during movement, ensuring efficient and reliable operation of the entire execution and driving mechanism.

[0087] In the standby state after the installation is completed, the thrust of the elastic member 122 causes the rod-shaped member 117 to be located at the lowest end of the matching groove 118, and the actuator 115 is completely retracted into the installation hole 02, which will not affect the normal rotation of the winch.

[0088] When the brakes are activated:

[0089] 1. If the main brake force is sufficient to stop the reel, or the reel is stopped after only a slight displacement, the stopping device 1 will not be activated because the rod 117 has not completely disengaged from the matching groove 118. This design allows us to accurately determine the slip distance of the reverse expansion torsion spring according to the sliding length of the rod and the groove, so as to select the appropriate activation time of the stopping device.

[0090] 2. If the main brake force is insufficient, the reverse expansion torsion spring will slip a lot with the reel, and when the rod-shaped member 117 completely disengages from the matching groove 118, the actuator 115 falls under its own weight (or optional auxiliary elastic force) and is caught by the stop groove 116 on the rapidly rotating reel. At this time, the actuator 115 temporarily connects the reel with the brake sleeve, and the rotational force of the reel is absorbed by the brake sleeve and stops.

[0091] 3. After the load is removed, the reel rotates in the opposite direction to cause the actuator 115 to automatically disengage from the groove 116, the elastic member 122 restores the movable sleeve position, and the system returns to the standby state.

[0092] The whole process is closely linked and orderly. When the main brake force is insufficient, the brake device can reliably and efficiently provide auxiliary braking force, effectively avoiding dangerous accidents; after the load is eliminated, it can automatically resume standby without manual reset. At the same time, the optimization of many details in the structural design, such as the adjustment of the sliding length of the rod-shaped member, reflects the excellent adaptability and reliability of the product.

[0093] In terms of structural layout, the following optimization designs have been made:

[0094] The array spacing of the stop grooves 116 on the inner wall of the reel 002 is smaller than the length of the first movable groove 04 and the second movable groove 05 on the brake sleeve 01. In this way, the actuator 115 can quickly snap into the nearest stop groove 116 to function, and the movement of the start trigger 113 and the start actuator 114 in the movable groove will not be hindered, avoiding slippage with the reverse expansion torsion spring 03 that affects the service life.

[0095] The movable sleeve 112 fits tightly against the outer ring of the brake sleeve 01, which makes it more stable during rotation and avoids shaking.

[0096] These optimization measures further improve the reliability and service life of the entire brake and stop device. Reasonable structural layout is conducive to the efficient coordination of various components and the best performance; at the same time, it also avoids conflicts and interferences to the greatest extent and eliminates possible hidden dangers of failure.

Claims

1. A winch with higher safety, characterized by The brake structure comprises a main brake device (001) and a stopping device (1) which follows the action of a reverse expansion torsion spring (03) in the main brake device (001) and intervenes to apply brakes to a reel (002); the stopping device (1) comprises an execution and drive component (11) and a reset component (12), wherein the execution and drive component (11) is used to apply auxiliary braking force to the reel (002) when the main brake force is insufficient, and the reset component (12) is used to automatically reset the execution and drive component (11) to a standby state after braking; The execution and driving assembly (11) comprises a movable sleeve (112), a start trigger (113), a start execution member (114), an execution member (115) and a stop groove (116) on the inner wall of the reel (002); The movable sleeve (112) is annularly arranged on the outer ring of the brake sleeve (01) and extends a protruding section (111) toward the free end of the brake sleeve (01); the start trigger (113) is fixed on the inner wall of the movable sleeve (112) and keeps contact with the reverse expansion torsion spring (03); the start actuator (114) is fixed on the protruding section (111); the actuator (115) cooperates with the start actuator (114) and is movably arranged in a mounting hole (02) opened on the extension section of the brake sleeve (01) up and down.

2. The winch with higher safety according to claim 1 is characterized in that The stopping grooves (116) are arranged in an array along the circumference of the inner wall of the reel (002) and correspond to the position of the actuator (115).

3. The winch with higher safety according to claim 1 is characterized in that The start trigger member (113) protrudes toward one side of the center of the movable sleeve (112), and the height of the protrusion is flush with the inner wall of the brake sleeve (01).

4. The winch with higher safety according to claim 1 is characterized in that The mounting hole (02) is provided with a protective body (021) on the side facing the reel (002), and the protective body (021) is provided with a mechanism for pushing the actuator (115) to move downward.

5. The winch with higher safety according to claim 1 is characterized in that The matching portion on the start-up actuator (114) is a rod-shaped member (117) extending axially along the brake sleeve, and the actuator (115) is provided with a matching groove (118) extending from high to low and matching with the rod-shaped member (117).

6. The winch with higher safety according to claim 2 is characterized in that One side of the braking groove (116) is a braking action surface when in contact with the actuator (115), and the other side is an inclined gentle slope surface.

7. The winch with higher safety according to claim 1, characterized in that The resetting assembly (12) comprises a long hole (121) opened on the movable sleeve (112) and an elastic member (122) arranged in the long hole (121); one end of the elastic member (122) is fixed, and the other end contacts the movable sleeve (112) to keep the movable sleeve rotating.

8. The winch with higher safety according to claim 1 is characterized in that The brake sleeve (01) is provided with a first movable groove (04) in the radial direction for starting the trigger member (113) to move, and a second movable groove (05) for starting the actuator (114) to move.

9. A method for stopping a winch using any one of claims 1 to 8, characterized in that , including the following steps: S1. During normal operation, the movable sleeve (112) is kept rotating in the opposite direction of the start trigger member (113) by the force of the elastic member (122), and the actuator (115) is completely retracted into the mounting hole (02) and is in a standby state; S2. When the main brake force is insufficient to stop the reel (002) from rotating, the reverse torsion spring (03) that is still rotating continues to push the start trigger member (113) to overcome the force of the elastic member (122); S3. The trigger member (113) is started to push the movable sleeve (112) to move toward the free end, and the actuator (114) is started to drive the actuator (115) to disengage from the matching groove (118) and fall; S4. The stop groove (116) on the rotating reel (002) captures the falling actuator (115), so that the actuator (115) temporarily connects the reel (002) with the brake sleeve (01); S5. The rotational force of the reel (002) is absorbed by the brake sleeve (01), thereby achieving auxiliary braking of the reel (002).

10. The stopping method according to claim 9, characterized in that , further comprising the following steps: After the load is removed, when the reel (002) rotates in the reverse direction, the gentle slope surface in the stop groove (116) lifts up the actuator (115), and at the same time, the elastic member (122) pushes the rod-shaped member (117) to be reinserted into the matching groove (118); The actuator (115) completely disengages from the stop groove (116), and the system automatically resets to the initial standby state.

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