An electric winch with improved structure

Abstract

The present invention provides an electric winch with an improved structure, belonging to the technical field of winch equipment. The present invention includes a base, a rotating shaft, a driving motor, a first circular tube, a plurality of grooves and an anti-reversal mechanism. The rotating shaft is horizontally rotated and arranged on the base through a seat plate. The driving motor is fixed on the base. The driving motor and the rotating shaft are connected in a transmission manner. Side plates are fixed at both ends of the first circular tube, one of which is fixedly connected to one end of the rotating shaft. The first circular tube and the rotating shaft are coaxially arranged. A plurality of rubber protrusions are arranged on the outside of the first circular tube. A plurality of grooves are circumferentially arranged on the outside of the first circular tube. The length direction of the groove is consistent with the length direction of the first circular tube. A telescopic airbag is arranged in the groove. The outside of the telescopic airbag extends out of the outer wall of the first circular tube. The telescopic airbag is filled with liquid. When the rotating shaft rotates counterclockwise, the anti-reversal mechanism can prevent the rotating shaft from reversing. The present invention can improve the anti-slip performance of the reel and prevent the reel from reversing and damaging the driving motor.

Description

Technical Field

[0001] The invention belongs to the technical field of marine winches and relates to an electric winch with an improved structure. Background Art

[0002] A winch is a small lifting device that uses a drum to wrap a wire rope to lift or pull heavy objects. The winch can be used alone or as a component of machinery such as lifting, road construction and mine hoisting. It is widely used due to its simple operation, large rope winding capacity and easy movement. It is mainly used for lifting or towing materials in construction, water conservancy projects, forestry, mines, docks, etc.

[0003] A wire rope is wound around the drum. When the winch needs to lift a heavy object, the motor drives the drum to rotate and reel in the wire rope. Due to the limited contact area between the wire rope and the drum, when the object is heavy, the drum and the wire rope are prone to slip, causing the object to slide down suddenly, which can easily damage the motor and has poor safety. Summary of the invention

[0004] The purpose of the present invention is to address the above problems in the prior art and to propose an electric winch with an improved structure, which can improve the anti-slip performance of the drum and prevent the drum from reversing and damaging the drive motor.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An electric winch with an improved structure comprises: a base;

[0007] A rotating shaft, the rotating shaft is horizontally rotatably arranged on the base through the seat plate;

[0008] A driving motor, wherein the driving motor is fixed on the base and is drivingly connected to the rotating shaft;

[0009] A first circular tube, both ends of the first circular tube are fixedly provided with side plates, one of the side plates is fixedly connected to one end of the rotating shaft, the first circular tube and the rotating shaft are coaxially arranged, and the outer side of the first circular tube is provided with a plurality of rubber protrusions;

[0010] A plurality of grooves, wherein the plurality of grooves are arranged on the outer side of the first circular tube along the circumferential direction, the length direction of the grooves is consistent with the length direction of the first circular tube, a telescopic airbag is arranged in the groove, the outer side of the telescopic airbag extends out of the outer side wall of the first circular tube, and the telescopic airbag is filled with liquid;

[0011] The anti-reversal mechanism is arranged on the base, and when the rotating shaft rotates counterclockwise, the anti-reversal mechanism can prevent the rotating shaft from reversing.

[0012] In the above-mentioned electric winch with an improved structure, the anti-reversal mechanism includes:

[0013] A ratchet wheel, the ratchet wheel is coaxially fixed on the rotating shaft, and the ratchet teeth of the ratchet wheel are bent in the clockwise direction;

[0014] A second round tube, the second round tube is fixed on the base through two supporting legs, the second round tube is coaxially arranged on the outside of the rotating shaft, a pawl is hinged on the inner side wall of the second round tube, and the outer end of the pawl is inserted between the two ratchet teeth of the ratchet wheel;

[0015] The adjusting mechanism is arranged on the second round tube. When the rotating shaft rotates counterclockwise, the adjusting mechanism can make the outer end of the pawl close to the ratchet wheel. When the rotating shaft rotates clockwise, the adjusting mechanism can make the outer end of the pawl away from the ratchet wheel.

[0016] In the above-mentioned electric winch with an improved structure, the adjustment mechanism includes:

[0017] A perforation, wherein the perforation is provided on the side wall of the second circular tube;

[0018] A sliding rod, the sliding rod is inserted into the through hole, one end of the sliding rod extends into the second round tube and a stop plate is fixed at the end, and the other end extends outside the second round tube, and the size of the stop plate is larger than the size of the through hole;

[0019] A compression spring, one end of which is fixedly connected to the limit plate, and the other end of which is fixedly connected to a side of the pawl away from the ratchet wheel, and when the limit plate contacts the inner side wall of the second round tube, the pawl is away from the ratchet wheel;

[0020] A fixing structure is provided on the screw rod, and the fixing structure can fix the screw rod at any position on the second round tube.

[0021] In the above-mentioned electric winch with an improved structure, the fixing structure includes:

[0022] The second nut is provided with an external thread on the sliding rod, and the second nut is connected to the sliding rod through the external thread.

[0023] In the above-mentioned improved structure of the electric winch, the liquid contained in the telescopic airbag is magnetorheological fluid, an electromagnet is fixedly provided at the bottom of the groove, a controller is provided on the base, a pressure sensor is provided on the inclined surface of the pawl close to one end of the ratchet, the pressure sensor is electrically connected to the electromagnet through the controller, and the electromagnet is electrically connected to an external power supply.

[0024] In the above-mentioned electric winch with an improved structure, a plurality of reinforcing plates are vertically provided on the inner side wall of the first circular tube along the circumferential direction, and the long side direction of the reinforcing plates is consistent with the length direction of the first circular tube.

[0025] In the above-mentioned electric winch with an improved structure, the first circular tube is filled with liquid, pressure power generation sheets are provided on both sides of a plurality of the reinforcing plates, a battery is provided on the base, and the pressure power generation sheets are electrically connected to the battery.

[0026] In the above-mentioned improved structure of the electric winch, the upper ends of the two supporting legs are connected with a connecting rod, and a fixing plate is horizontally provided on the connecting rod. The fixing plate is located above the two side plates, and an arc-shaped pressure plate is provided below the fixing plate through a lifting structure. The length direction of the arc-shaped pressure plate is consistent with the length direction of the first circular tube. The lifting structure can drive the arc-shaped pressure plate to move up and down and fix it at any position.

[0027] In the above-mentioned electric winch with an improved structure, the lifting structure includes:

[0028] A screw rod, wherein a threaded hole is formed on the fixing plate, the screw rod is threadedly connected in the threaded hole, the lower end of the screw rod is rotatably connected to the upper side of the arc-shaped pressing plate, and the upper end of the screw rod extends to the upper side of the fixing plate;

[0029] A vertical rod, a through hole is opened on the fixing plate, the vertical rod is inserted in the through hole, the upper end of the vertical rod extends out of the fixing plate and a sealing plate is fixed on the end, and the lower end of the vertical rod is fixedly connected to the lower side of the arc pressure plate.

[0030] In the above-mentioned electric winch with an improved structure, a rubber plate is provided on the lower side of the arc-shaped pressure plate.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] 1. Wrap the steel wire rope around the first round tube, and the steel wire rope squeezes the telescopic airbag in the groove. The telescopic airbag is deformed under pressure, which increases the contact area between the steel wire rope and the first round tube and improves the friction. When the winch lifts the heavy object, the drive motor is started to drive the first round tube to rotate and reel in the steel wire rope. Since a number of rubber bumps are provided on the first round tube, the steel wire rope is prevented from slipping. In addition, when lifting heavier objects, the anti-reversal mechanism can prevent the shaft from reversing, damaging the motor, or even causing the heavy object to fall and cause a safety accident.

[0033] 2. When the wire rope on the first round tube needs to be lowered, the adjustment mechanism is started to make the outer end of the pawl away from the ratchet so that the ratchet and the rotating shaft can rotate forward and backward. The drive motor is started to drive the first round tube to rotate and release the wire rope. When the heavy object needs to be lifted, the adjustment mechanism is started to make the outer end of the pawl close to the ratchet. The drive motor is started to drive the rotating shaft to rotate. The ratchet on the rotating shaft rotates along the outer end of the pawl. The first round tube rotates to reel in the wire rope. When the drive motor suddenly loses power, the heavy object loses the pulling force and falls, giving the rotating shaft a reverse impact. At this time, the pawl restricts the reverse rotation of the ratchet to prevent the heavy object from accidentally falling. It is safe and reliable.

[0034] 3. When the wire rope on the first round tube needs to be released, the slide bar is released through the fixed structure, and the slide bar is pulled to slide along the perforation to the outside of the second round tube, and the outer end of the pawl is driven away from the ratchet by the compression spring, so that the ratchet and the rotating shaft can be reversed, which is convenient for releasing the wire rope. When it is necessary to lift heavy objects, the slide bar is pushed to slide into the second round tube, and the outer end of the pawl is pushed to be close to the ratchet by the compression spring, and the slide bar is fixed by the fixed structure to prevent the slide bar from sliding out of the second round tube. When the ratchet rotates counterclockwise, the outer end of the pawl rotates relatively along the ratchet teeth of the ratchet, and the compression spring continuously contracts. When the ratchet rotates clockwise, the outer end of the pawl is stuck between the ratchet teeth of the ratchet to fix the ratchet. The structure is simple;

[0035] 4. When the winch is lifting a heavy object, the first round tube and the rotating shaft reverse, the outer ends of the ratchet and the pawl are squeezed, and the pressure sensor sends a signal to the controller. The controller starts the electromagnet to increase the fluid resistance of the magnetorheological fluid, so that the shape of the telescopic airbag is relatively fixed, increasing the friction between the wire rope and the first round tube to prevent the wire rope from slipping;

[0036] 5. The hollow setting of the first round tube reduces the overall weight of the winch and facilitates transportation. A reinforcing plate is added inside the first round tube to improve the structural strength of the first round tube and prevent the first round tube from being deformed under pressure. In addition, since the first round tube is filled with liquid, when the first round tube rotates, the liquid continuously hits the pressure power generation sheet on the reinforcing plate, and the pressure power generation sheet generates electricity, which is then stored in the battery, realizing energy recovery and environmental protection.

[0037] 6. When the winch needs to drag heavy objects, after the wire rope is released to the specified length, the arc-shaped pressure plate is driven downward by the lifting structure to press the wire rope on the first round tube to prevent the wire rope from sliding relative to each other and improve the working stability of the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of the present invention;

[0039] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0040] Figure 3 yes Figure 1 Sectional view at the middle BB;

[0041] Figure 4 yes Figure 1 Cross-sectional view at CC.

[0042] In the figure, 1, side plate; 2, reinforcing plate; 21, pressure power generation sheet; 3, first round tube; 31, groove; 311, electromagnet; 32, rubber bump; 33, telescopic airbag; 331, magnetorheological fluid; 4, driving motor; 41, rotating shaft; 411, ratchet; 42, base; 421, supporting leg; 422, connecting rod; 5, second round tube; 51, perforation; 52, sliding rod; 521, limit plate; 522, external thread; 53, second nut; 54, compression spring; 55, pawl; 551, pressure sensor; 6, controller; 7, battery; 8, fixing plate; 81, through hole; 82, threaded hole; 9, arc pressure plate; 91, screw; 92, vertical rod; 921, sealing plate. DETAILED DESCRIPTION

[0043] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0044] like Figures 1 to 4 As shown, an electric winch with an improved structure includes a base 42, a rotating shaft 41, a driving motor 4, a first round tube 3, a plurality of grooves 31 and an anti-reversal mechanism.

[0045] The rotating shaft 41 is horizontally rotatably arranged on the base 42 via a seat plate.

[0046] The driving motor 4 is fixed on the base 42 , and the output shaft of the driving motor 4 is fixedly connected to the rotating shaft 41 .

[0047] Side plates 1 are coaxially fixed to both ends of the first circular tube 3 , one of the side plates 1 is fixedly connected to one end of the rotating shaft 41 , the first circular tube 3 and the rotating shaft 41 are coaxially arranged, and a plurality of rubber protrusions 32 are arranged on the outer side of the first circular tube 3 .

[0048] A plurality of the grooves 31 are circumferentially arranged on the outside of the first circular tube 3 , and the length direction of the grooves 31 is consistent with the length direction of the first circular tube 3 . A telescopic airbag 33 is arranged in the groove 31 , and the outer side of the telescopic airbag 33 extends out of the outer wall of the first circular tube 3 . The telescopic airbag 33 is filled with liquid.

[0049] The anti-reversal mechanism is disposed on the base 42 , and when the rotating shaft 41 rotates counterclockwise, the anti-reversal mechanism can prevent the rotating shaft 41 from reversing.

[0050] The steel wire rope is wound around the first round tube 3, and the steel wire rope squeezes the telescopic airbag 33 in the groove 31. The telescopic airbag 33 is deformed under pressure, thereby increasing the contact area between the steel wire rope and the first round tube 3 and improving the friction force. When the winch lifts a heavy object, the drive motor 4 is started to drive the first round tube 3 to rotate and reel in the steel wire rope. Since a number of rubber protrusions 32 are provided on the first round tube 3, the steel wire rope is prevented from slipping. In addition, when lifting heavier objects, the anti-reversal mechanism can prevent the rotating shaft 41 from reversing, damaging the motor, or even causing the heavy object to fall and cause a safety accident.

[0051] Specifically, the anti-reversal mechanism includes a ratchet 411, a second round tube 5 and an adjustment mechanism.

[0052] The ratchet wheel 411 is coaxially fixed on the rotating shaft 41 , and the ratchet teeth of the ratchet wheel 411 are bent in the clockwise direction.

[0053] The second circular tube 5 is fixed on the base 42 through two supporting legs 421 . The second circular tube 5 is coaxially arranged on the outside of the rotating shaft 41 . A pawl 55 is hinged on the inner side wall of the second circular tube 5 . The outer end of the pawl 55 is inserted between the two ratchet teeth of the ratchet wheel 411 .

[0054] The adjusting mechanism is disposed on the second circular tube 5 , and when the rotating shaft 41 rotates counterclockwise, the adjusting mechanism can make the outer end of the pawl 55 close to the ratchet 411 , and when the rotating shaft 41 rotates clockwise, the adjusting mechanism can make the outer end of the pawl 55 away from the ratchet 411 .

[0055] When it is necessary to lower the wire rope on the first round tube 3, start the adjusting mechanism to make the outer end of the pawl 55 away from the ratchet 411, so that the ratchet 411 and the rotating shaft 41 can rotate forward and backward, start the driving motor 4, drive the first round tube 3 to rotate, and release the wire rope. When it is necessary to lift a heavy object, start the adjusting mechanism to make the outer end of the pawl 55 close to the ratchet 411, start the driving motor 4, drive the rotating shaft 41 to rotate, and the ratchet 411 on the rotating shaft 41 rotates along the outer end of the pawl 55. The first round tube 3 rotates to reel in the wire rope. When the driving motor 4 suddenly loses power, the heavy object loses tension and falls, giving the rotating shaft 41 a reverse impact. At this time, the pawl 55 limits the reverse rotation of the ratchet 411 to avoid accidental falling of the heavy object, which is safe and reliable.

[0056] Specifically, the adjustment mechanism includes a through hole 51, a slide rod 52, a compression spring 54 and a fixing structure.

[0057] The through holes 51 are formed on the side wall of the second circular tube 5 .

[0058] The slide bar 52 is inserted into the through hole 51 , one end of the slide bar 52 extends into the second circular tube 5 and a limit plate 521 is fixed at the end, and the other end extends outside the second circular tube 5 . The size of the limit plate 521 is larger than the size of the through hole 51 .

[0059] One end of the compression spring 54 is fixedly connected to the limiting plate 521 , and the other end is fixedly connected to a side of the pawl 55 away from the ratchet 411 . When the limiting plate 521 contacts the inner wall of the second circular tube 5 , the pawl 55 is away from the ratchet 411 .

[0060] The fixing structure is arranged on the screw rod 52 , and the fixing structure can fix the screw rod 52 at any position on the second round tube 5 .

[0061] When it is necessary to release the wire rope on the first circular tube 3, the sliding rod 52 is released through the fixed structure, and the sliding rod 52 is pulled to slide along the through hole 51 to the outside of the second circular tube 5, and the outer end of the pawl 55 is driven by the compression spring 54 to move away from the ratchet 411, so that the ratchet 55 and the rotating shaft 41 can be reversed, which is convenient for releasing the wire rope. When it is necessary to lift a heavy object, the sliding rod 52 is pushed to slide into the second circular tube 5, and the compression spring 54 is used to push the outer end of the pawl 55 to be close to the ratchet 411, and the sliding rod 52 is fixed by the fixed structure to prevent the sliding rod 52 from sliding out of the second circular tube 5. When the ratchet 411 rotates counterclockwise, the outer end of the pawl 55 rotates relatively along the ratchet teeth of the ratchet 411, and the compression spring 54 continuously contracts. When the ratchet 411 rotates clockwise, the outer end of the pawl 55 is stuck between the ratchet teeth of the ratchet 411 to fix the ratchet 411. The structure is simple.

[0062] Specifically, the fixing structure includes a second nut 53 .

[0063] The slide rod 52 is provided with an external thread 522 , and the second nut 53 is connected to the slide rod 52 via the external thread 522 . The through hole 51 is rectangular, and the cross section of the slide rod 52 is rectangular.

[0064] When the slide bar 52 needs to slide out of the second round tube 5, the nut 53 is rotated downward along the slide bar 52. The slide bar 52 is in the rectangular through-hole 51, limiting the rotation of the slide bar 52 so that the slide bar 52 can only slide outward, causing the outer end of the pawl 55 to be away from the ratchet 411. When the slide bar 52 needs to slide into the second round tube 5, the nut 53 is rotated upward along the slide bar 52. Since the slide bar 52 is restricted from rotating, it can only slide into the second round tube 5, causing the outer end of the pawl 55 to be close to the ratchet 411, and the operation is simple.

[0065] Specifically, the liquid contained in the telescopic airbag 33 is a magnetorheological fluid 331, an electromagnet 311 is fixedly provided at the bottom of the groove 31, a controller 6 is provided on the base 42, and a pressure sensor 551 is provided on the inclined surface of one end of the pawl 55 close to the ratchet 411. The pressure sensor 551 is electrically connected to the electromagnet 311 through the controller 6, and the electromagnet 311 is electrically connected to an external power supply.

[0066] When the winch is lifting a heavy object, the first circular tube 3 and the rotating shaft 41 are reversed, the outer ends of the ratchet 411 and the pawl 55 are squeezed, and the pressure sensor 551 sends a signal to the controller 6. The controller 6 starts the electromagnet 311 to increase the fluid resistance of the magnetorheological fluid 331, so that the shape of the telescopic airbag 33 is relatively fixed, and the friction between the wire rope and the first circular tube 3 is increased to prevent the wire rope from slipping.

[0067] Specifically, a plurality of reinforcing plates 2 are vertically disposed on the inner wall of the first circular tube 3 along the circumferential direction, and the long side direction of the reinforcing plates 2 is consistent with the length direction of the first circular tube 3 .

[0068] The hollow setting of the first circular tube 3 reduces the overall weight of the winch and facilitates transportation. A reinforcing plate 2 is added inside the first circular tube 3 to improve the structural strength of the first circular tube 3 and prevent the first circular tube 3 from being deformed by pressure.

[0069] Specifically, the first circular tube 3 is filled with liquid, pressure power generation sheets 21 are provided on both sides of the plurality of reinforcing plates 2 , a battery 7 is provided on the base 42 , and the pressure power generation sheets 21 are electrically connected to the battery 7 .

[0070] Since the first circular tube is filled with liquid, when the first circular tube rotates, the liquid continuously hits the pressure power generation sheet on the reinforcing plate, and the pressure power generation sheet generates electrical energy which is then stored in the battery, thus realizing energy recovery and being green and environmentally friendly.

[0071] Specifically, the upper ends of the two supporting legs 421 are connected with a connecting rod 422, and a fixing plate 8 is horizontally provided on the connecting rod 422. The fixing plate 8 is located above the two side plates 1, and an arc-shaped pressure plate 9 is provided below the fixing plate 8 through a lifting structure. The longitudinal section of the arc-shaped pressure plate 9 is an arc, and the length direction of the arc-shaped pressure plate 9 is consistent with the length direction of the first circular tube 3. The lifting structure can drive the arc-shaped pressure plate 9 to move up and down and fix it at any position.

[0072] When the winch needs to drag a heavy object, after the wire rope is released to a specified length, the arc-shaped pressure plate 9 is driven downward by the lifting structure to press the wire rope wrapped around the first circular tube 3 to prevent the wire rope from sliding relative to each other, thereby improving the working stability of the winch; in addition, the arc-shaped arc-shaped pressure plate 9 can increase the contact area with the wire rope, increase friction, and ensure that the wire rope does not slide.

[0073] Specifically, the lifting structure includes a screw rod 91 and a vertical rod 92 .

[0074] The fixing plate 8 is provided with a threaded hole 82 , and the screw rod 91 is threadedly connected in the threaded hole 82 . The lower end of the screw rod 91 is rotatably connected to the upper side of the arc-shaped pressing plate 9 , and the upper end of the screw rod 91 extends to the top of the fixing plate 8 .

[0075] The fixing plate 8 is provided with a through hole 81 , and the vertical rod 92 is inserted into the through hole 81 . The upper end of the vertical rod 92 extends out of the fixing plate 8 and a sealing plate 921 is fixed to the end thereof. The lower end of the vertical rod 92 is fixedly connected to the lower side surface of the arc-shaped pressing plate 9 .

[0076] Since the vertical rod on the arc pressure plate 9 plays a guiding role, the arc pressure plate 9 will not rotate. By rotating the screw 91, the arc pressure plate 9 can only move up and down. In addition, the position of the arc pressure plate 9 can be adjusted according to the amount of steel wire rope wound on the first circular tube 3, so that the arc pressure plate 9 can always press the steel wire rope tightly to prevent the steel wire rope from slipping, and has a wide range of applications.

[0077] Specifically, a rubber plate is provided on the lower side of the arc-shaped pressing plate 9 .

[0078] When the arc-shaped pressing plate 9 contacts the steel wire rope on the first round tube 3, the steel wire rope squeezes the rubber plate on the lower side, causing the rubber plate to deform and concave, thereby increasing the contact area with the steel wire rope, improving the friction force, and avoiding grinding of the steel wire rope; in addition, when the rubber plate is greatly worn, it can be replaced at any time, eliminating the trouble of replacing the arc-shaped pressing plate 9 and reducing maintenance costs.

[0079] In the description of this patent, it should be understood that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0080] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An electric winch with an improved structure, characterized in that: include: Base (42); A rotating shaft (41), wherein the rotating shaft (41) is horizontally rotatably arranged on the base (42) via a seat plate; A driving motor (4), wherein the driving motor (4) is fixedly mounted on a base (42), and the driving motor (4) is drivingly connected to a rotating shaft (41); A first circular tube (3), both ends of the first circular tube (3) are fixedly provided with side plates (1), one of the side plates (1) is fixedly connected to one end of the rotating shaft (41), the first circular tube (3) and the rotating shaft (41) are coaxially arranged, and the outer side of the first circular tube (3) is provided with a plurality of rubber protrusions (32); A plurality of grooves (31), wherein the plurality of grooves (31) are arranged on the outer side of the first circular tube (3) along the circumferential direction, the length direction of the grooves (31) is consistent with the length direction of the first circular tube (3), a telescopic airbag (33) is arranged in the grooves (31), the outer side of the telescopic airbag (33) extends out of the outer side wall of the first circular tube (3), and the telescopic airbag (33) is filled with liquid; an anti-reversal mechanism, the anti-reversal mechanism being arranged on the base (42) and being capable of preventing the rotating shaft (41) from reversing when the rotating shaft (41) rotates; A plurality of reinforcing plates (2) are vertically arranged on the inner side wall of the first circular tube (3) along the circumferential direction.

2. The electric winch with improved structure according to claim 1 is characterized in that: The anti-reversal mechanism comprises: A ratchet wheel (411), wherein the ratchet wheel (411) is coaxially fixed on the rotating shaft (41), and the ratchet teeth of the ratchet wheel (411) are bent in a clockwise direction; A second circular tube (5), the second circular tube (5) being fixed on the base (42) via two supporting legs (421), the second circular tube (5) being coaxially arranged on the outside of the rotating shaft (41), a ratchet (55) being hinged on the inner side wall of the second circular tube (5), the outer end of the ratchet (55) being inserted between two ratchet teeth of the ratchet wheel (411); The adjusting mechanism is arranged on the second circular tube (5). When the rotating shaft (41) rotates counterclockwise, the adjusting mechanism can make the outer end of the pawl (55) close to the ratchet (411); when the rotating shaft (41) rotates clockwise, the adjusting mechanism can make the outer end of the pawl (55) away from the ratchet (411).

3. The electric winch with improved structure according to claim 2 is characterized in that: The regulating mechanism comprises: A perforation (51), wherein the perforation (51) is formed on the side wall of the second circular tube (5); A sliding rod (52), wherein the sliding rod (52) is inserted into the through hole (51), one end of the sliding rod (52) extends into the second circular tube (5) and a limiting plate (521) is fixedly provided at the end thereof, and the other end of the sliding rod (52) extends outside the second circular tube (5), and the size of the limiting plate (521) is larger than the size of the through hole (51); a compression spring (54), one end of the compression spring (54) being fixedly connected to the limiting plate (521), and the other end of the compression spring (54) being fixedly connected to a side of the pawl (55) away from the ratchet (411); when the limiting plate (521) contacts the inner side wall of the second circular tube (5), the pawl (55) is away from the ratchet (411); A fixing structure is provided on the slide bar (52), and the fixing structure can fix the slide bar (52) at any position on the second circular tube (5).

4. The electric winch with improved structure according to claim 3 is characterized in that: The fixed structure comprises: The second nut (53) is provided with an external thread (522) on the sliding rod (52), and the second nut (53) is connected to the sliding rod (52) through the external thread (522).

5. The electric winch with improved structure according to claim 4 is characterized in that: The liquid contained in the telescopic airbag (33) is a magnetorheological fluid (331); an electromagnet (311) is fixedly arranged at the bottom of the groove (31); a controller (6) is arranged on the base (42); a pressure sensor (551) is arranged on the inclined surface of one end of the pawl (55) close to the ratchet (411); the pressure sensor (551) is electrically connected to the electromagnet (311) through the controller (6); and the electromagnet (311) is electrically connected to an external power supply.

6. The electric winch with improved structure according to claim 5, characterized in that: The first circular tube (3) is filled with liquid, pressure generating sheets (21) are provided on both sides of a plurality of the reinforcing plates (2), a storage battery (7) is provided on the base (42), and the pressure generating sheets (21) are electrically connected to the storage battery (7).

7. The electric winch with improved structure according to claim 6 is characterized in that: The upper ends of the two supporting legs (421) are connected with a connecting rod (422), and a fixing plate (8) is horizontally arranged on the connecting rod (422). The fixing plate (8) is located above the two side plates (1), and an arc-shaped pressing plate (9) is arranged below the fixing plate (8) through a lifting structure. The length direction of the arc-shaped pressing plate (9) is consistent with the length direction of the first circular tube (3), and the lifting structure can drive the arc-shaped pressing plate (9) to move up and down and fix it at any position.

8. The electric winch with improved structure according to claim 7 is characterized in that: The lifting structure comprises: A screw rod (91), wherein a threaded hole (82) is formed on the fixing plate (8), wherein the screw rod (91) is threadedly connected in the threaded hole (82), wherein the lower end of the screw rod (91) is rotatably connected to the upper side of the arc-shaped pressing plate (9), and the upper end of the screw rod (91) extends to the upper side of the fixing plate (8); A vertical rod (92), a through hole (81) is provided on the fixing plate (8), the vertical rod (92) is inserted into the through hole (81), the upper end of the vertical rod (92) extends out of the fixing plate (8) and a sealing plate (921) is fixed to the end, and the lower end of the vertical rod (92) is fixedly connected to the lower side of the arc-shaped pressing plate (9).

9. The electric winch with improved structure according to claim 8, characterized in that: A rubber plate is provided on the lower side of the arc-shaped pressing plate (9).

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