Fixed and movable dual-purpose remote-control variable-torque electric winch

Abstract

The invention belongs to the technical field of winching equipment, and particularly relates to a fixed and movable dual-purpose remote-control variable-torque electric winching which comprises a winching body and a carrying table, the winching body is installed on the carrying table, and the carrying table is placed on the ground; the device further comprises an adsorption fixing mechanism, the adsorption fixing mechanism is installed on the carrying table, and the adsorption fixing mechanism is used for enhancing the connecting strength of the carrying table and the ground. Transmission between the winching body and the piston plate is achieved through the crankshaft and the hinge rod, so that in the working process of the electric winching, airflow extraction is continuously conducted on the negative pressure suction cup, then the negative pressure strength between the negative pressure suction cup and the ground is maintained, the gravity of the winching body and the gravity of the carrying table are matched, the connecting strength with the ground is effectively enhanced, and the service life of the winching body is prolonged. Meanwhile, the connecting arms evenly distributed on the periphery of the carrying table facilitate the worker to further enhance the weight of the carrying table in a self-pressing or heavy object pressing mode, and then the stability of the electric winching in the working process is maintained.

Description

Technical Field

[0001] This invention belongs to the technical field of winch equipment, specifically a variable torque electric winch that can be used for both stationary and motor operation and can be remotely controlled. Background Technology

[0002] As an important lifting and traction tool, winch equipment is widely used in various fields such as power construction, telecommunications construction, and building installation. Traditional winches are usually single-function, either only usable in a fixed location or inconvenient to move, and most lack remote control operation and torque adjustment capabilities. When faced with complex and ever-changing construction environments and different operational requirements, traditional winches are difficult to adapt flexibly, resulting in low construction efficiency, high labor intensity for operators, and certain safety hazards.

[0003] When using winches, a platform mounting bracket is usually required to secure the equipment, especially for portable winches. Lightweight portable winches often need to be connected to the ground to maintain their position during lifting or towing. For example, a portable electric winch and its usage method are disclosed in related technology (application number CN2011705357X). This solution uses a fixing component that can penetrate deep into the ground with the help of a motor to fix it in place and prevent displacement during use. However, in practical applications, it has been found that, on the one hand, the deep-penetration setting will damage the ground and is not suitable for use in non-soil areas; on the other hand, the ground fixing method makes it difficult to disassemble the platform mounting bracket, making it unsuitable for use in operations that require frequent position changes.

[0004] In view of this, the present invention proposes a variable torque electric winch that can be used for both stationary and dynamic applications and can be remotely controlled, in order to solve the above-mentioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the above-mentioned technical problems, this invention proposes a variable torque electric winch that can be used for both stationary and dynamic applications and is remotely controlled.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a variable torque electric winch that can be used for both fixed and dynamic applications and can be remotely controlled, comprising a winch body and a platform. The winch body is mounted on the platform, and the platform is placed on the ground. In the present invention, the winch body and the platform are detachably connected. When the winch body is mounted on the platform, the electric winch is fixedly installed. When the winch body is separated from the platform, the electric winch is dynamically installed. It also includes an adsorption and fixing mechanism, which is installed on the platform and is used to enhance the connection strength between the platform and the ground. The adsorption and fixation mechanism includes a connecting arm, a negative pressure suction cup, and a suction cylinder; The platform is equipped with connecting arms, which are evenly arranged along the circumference of the platform. Negative pressure suction cups are evenly distributed on the side of the connecting arms facing the ground. The suction cylinder is installed on the winch body. The suction cylinder is connected to the negative pressure suction cup through a one-way pipe. The top of the suction cylinder is open. A one-way air outlet valve is installed on the suction cylinder. A piston plate is slidably and sealed inside the suction cylinder. A crankshaft is mounted on the winch body, and the crankshaft is connected to the piston plate via a hinge shaft.

[0007] Furthermore, it also includes a fixed point adjustment mechanism, which is mounted on the platform and is used to adjust the relative position of the connecting arm and the platform; The fixed point adjustment mechanism includes a sliding seat, a hinged column, and a tension spring; The platform includes a platform plate and a base. The platform plate is mounted on the base. A sliding groove is provided on the platform plate. A sliding seat is slidably installed in the sliding groove. The winch body is mounted on the sliding seat. The connecting arm includes a fixed arm and a deflection arm. The fixed arm is fixedly mounted on a platform. A deflection groove is provided on the platform. The deflection groove is symmetrically distributed on both sides of the fixed arm. A hinge column is rotatably mounted in the deflection groove. The deflection arm is fixedly connected to the hinge column. Tension springs are installed on both sides of the sliding seat. The sliding groove is connected to the deflection groove. The tension springs extend into the deflection groove and are connected to the deflection arm. In the initial state, the fixed arm and the two deflection arms are arranged at equal intervals on the circumference of the platform.

[0008] Furthermore, the bottom surface of the sliding groove is inclined, and the sliding groove is located at the lowest point at the center of the platform.

[0009] Furthermore, the platform is rotatably mounted on the base, and the length direction of the sliding groove is parallel to the rotation direction of the winch body.

[0010] Furthermore, the platform is composed of a center plate and a lifting plate. The lifting plate is slidably sleeved on the center plate. A double-headed telescopic rod is embedded in the center plate. One end of the double-headed telescopic rod extends into the sliding groove and is located below the sliding seat, and the other end extends below the lifting plate. The winch body and the lifting plate are driven by the double-headed telescopic rod.

[0011] Furthermore, each of the connecting arms is fixedly equipped with an expansion hose, which is connected to a one-way air outlet valve. A sliding frame is sleeved on the connecting arm, and the sliding frame and the expansion hose are connected by rollers. The length of the expansion hose is less than the length of the connecting arm, and the end of the expansion hose away from the platform is open. A cleaning brush is installed at the bottom of the sliding frame.

[0012] Furthermore, each connecting arm consists of a connecting end and an extension end, with the connecting end and the extension end hinged together. A clamping plate is vertically mounted on the platform, and in the initial state, the clamping plate fixes the extension end, keeping the extension end in an upright position.

[0013] Furthermore, a sponge column is fixedly installed on the sliding frame, and the bottom opening of the negative pressure suction cup is located on the moving path of the sponge column.

[0014] Furthermore, a water storage bottle is installed on the sliding frame, and a metering device is installed at the open end of the water storage bottle. The metering device is electrically connected to the inner cavity of the sponge column.

[0015] Furthermore, the metering device consists of a connecting ring, a balance plate, and a water supply pipe. The connecting ring is electrically connected to the water storage bottle, and the water supply pipe is installed on the side wall of the connecting ring. The balance plate is rotatably sealed inside the connecting ring, and a through groove is opened on the balance plate. Due to the influence of the gravity of the balance plate, the through groove always remains vertical.

[0016] The beneficial effects of this invention are as follows: 1. The present invention discloses a remotely controlled variable torque electric winch that can be used for both stationary and dynamic applications. It employs a crankshaft and hinge rod to achieve transmission between the winch body and the piston plate. During operation, the winch continuously extracts airflow from the negative pressure suction cup, maintaining the negative pressure strength between the suction cup and the ground. Combined with the gravity of the winch body and the platform, this effectively enhances the connection strength with the ground. Furthermore, the connecting arms evenly distributed around the platform allow operators to further increase the platform's weight by pressing it down with their own bodies or heavy objects, thus maintaining the stability of the electric winch during operation.

[0017] 2. The present invention provides a remotely controlled variable torque electric winch that can be used for both stationary and dynamic applications. By rationally allocating the connection positions between the electric winch and the ground, if the cable is on the ground, under the traction action, the deflection arm and the fixed arm will gradually converge from their initial dispersed arrangement, and both the deflection arm and the fixed arm will converge in the direction of cable extension, increasing the difficulty of moving the platform. If the cable is continuously pulled downward, the connection positions between the platform and the ground will be further dispersed by the connection arms in the dispersed state, thereby enhancing the connection stability between the platform and the ground. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the invention in its working state; Figure 3 It is an assembly 3D view of the stage and the adsorption fixing mechanism; Figure 4 This is a diagram of the internal structure of the deflection groove; Figure 5 It is a split 3D view of the platform; Figure 6 It is an assembly 3D view of the sliding frame and connecting arm; Figure 7 It is a 3D view of the sliding frame; Figure 8 This is a schematic diagram showing the connection between the suction cylinder and the one-way pipe and expansion hose; In the diagram: 1. Winch body; 11. Crankshaft; 12. Hinge shaft; 2. Negative pressure suction cup; 21. Suction cylinder; 22. Piston plate; 23. One-way tube; 25. Sliding seat; 26. Sliding groove; 3. Platform; 31. Center plate; 32. Lifting plate; 33. Deflection groove; 34. Hinge column; 35. Tension spring; 4. Fixed arm; 41. Deflection arm; 42. Double-headed telescopic rod; 43. Expansion hose; 5. Sliding frame; 51. Roller; 52. Cleaning brush; 53. Clamping plate; 54. Sponge column; 55. Water storage bottle; 56. Connecting ring; 57. Balance plate; 58. Water supply pipe; 59. Through groove. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 8 As shown, the present invention provides a remotely controlled variable torque electric winch that can be used for both stationary and dynamic applications, comprising a winch body 1 and a platform, wherein the winch body 1 is mounted on the platform and the platform is placed on the ground. It also includes an adsorption and fixing mechanism, which is installed on the platform and is used to enhance the connection strength between the platform and the ground. The adsorption and fixing mechanism includes a connecting arm, a negative pressure suction cup 2, and a suction cylinder 21; A connecting arm is installed on the platform, and the connecting arm is evenly arranged along the circumference of the platform. Negative pressure suction cups 2 are evenly distributed on the side of the connecting arm facing the ground. The suction cylinder 21 is installed on the winch body 1. The suction cylinder 21 is connected to the negative pressure suction cup 2 through the one-way pipe 23. The top of the suction cylinder 21 is open. A one-way air valve is installed on the suction cylinder 21. A piston plate 22 is slidably and sealed inside the suction cylinder 21. A crankshaft 11 is mounted on the winch body 1, and the crankshaft 11 is connected to the piston plate 22 via a hinge shaft 12.

[0022] When the winch is used on a relatively smooth surface such as brick, it is not advisable to damage the surface. Therefore, a new connection method is needed to enhance the stability of the platform on the ground. In this invention, by setting up an adsorption fixing mechanism, the strong adsorption effect of the negative pressure suction cup 2 is used to enhance the stability of the platform on the ground.

[0023] Specifically, in this invention, evenly distributed connecting arms are installed along the circumference of the platform. A negative pressure suction cup 2 is installed on the side of the connecting arms facing the ground. In actual use of the electric winch, the winch body 1 is mounted on the platform, which is placed on the ground. When the winch body 1 is started, the winch drum in the winch body 1 rotates continuously under the drive of the motor, driving the crankshaft 11 to rotate. When the crankshaft 11 rotates, the piston plate 22 reciprocates within the suction cylinder 21 through the transmission of the hinge shaft 12. Due to the one-way pipe 23 and one-way air outlet valve installed on the suction cylinder 21, the suction cylinder 21 continuously draws air from between the negative pressure suction cup 2 and the ground. When a negative pressure state exists between the negative pressure suction cup 2 and the ground, air is drawn from the outside... Under atmospheric pressure, the negative pressure suction cup 2 will adhere tightly to the ground. If the electric winch is dragging the cable and the force direction is parallel to the ground (that is, the electric winch is used to drag the cable on the ground), the static friction of the platform on the ground will increase due to the negative pressure combined with the gravity of the winch body 1 and the platform, making it more difficult for the platform to move on the ground. However, if the force direction of the winch body 1 is vertical (that is, the electric winch is used to drag the cable downward), the negative pressure traction between the negative pressure suction cup 2 and the ground, combined with the gravity of the winch body 1 and the platform, is opposite to the pulling force of the cable on the electric winch. Therefore, the stability of the electric winch on the ground can also be enhanced.

[0024] It should be noted that the suction cylinder 21 in this invention is also equipped with a pressure opening valve, which is connected to the outside. In actual application, since the crankshaft 11 is connected to the winch body 1, the suction cylinder 21 is always in working state during the operation of the electric winch. When the negative pressure suction cup 2 is in close contact with the ground, preventing outside air from entering between the negative pressure suction cup 2 and the ground, a certain intensity of negative pressure is formed in the pipe between the negative pressure suction cup 2 and the suction cylinder 21 as suction continues. At this time, during the continuous movement of the piston plate 22, when the intensity of the negative pressure in the suction cylinder 21 is greater than the opening pressure of the pressure opening valve, the pressure opening valve opens to avoid the phenomenon of excessive negative pressure in the suction cylinder 21, thereby protecting the equipment.

[0025] This invention utilizes a crankshaft 11 and a hinge rod to achieve transmission between the winch body 1 and the piston plate 22. Therefore, during the operation of the electric winch, airflow is continuously extracted from the negative pressure suction cup 2, thereby maintaining the negative pressure strength between the negative pressure suction cup 2 and the ground. Combined with the gravity of the winch body 1 and the platform, the connection strength with the ground is effectively enhanced. At the same time, the connecting arms evenly distributed around the platform also allow the operator to use their own body or heavy objects to press down, further increasing the weight of the platform and thus maintaining the stability of the electric winch during operation.

[0026] In a preferred embodiment of the present invention, a fixed point adjustment mechanism is further included. The fixed point adjustment mechanism is mounted on the platform and is used to adjust the relative position of the connecting arm and the platform. The fixed point adjustment mechanism includes a sliding seat 25, a hinged column 34, and a tension spring 35; The platform includes a platform plate and a base 3. The platform plate is mounted on the base 3. A sliding groove 26 is provided on the platform plate. A sliding seat 25 is slidably installed in the sliding groove 26. The winch body 1 is mounted on the sliding seat 25. The connecting arm includes a fixed arm 4 and a deflection arm 41. The fixed arm 4 is fixedly installed on the platform. The platform is provided with a deflection groove 33. The deflection groove 33 is symmetrically distributed on both sides of the fixed arm 4. A hinge column 34 is rotatably installed in the deflection groove 33. The deflection arm 41 is fixedly connected to the hinge column 34. Tension springs 35 are installed on both sides of the sliding seat 25. The sliding groove 26 is connected to the deflection groove 33. The tension springs 35 extend into the deflection groove 33 and are connected to the deflection arm 41. In the initial state, the fixed arm 4 and the two deflection arms 41 are arranged at equal intervals in the circumferential direction of the platform.

[0027] The bottom surface of the sliding groove 26 is inclined, and the sliding groove 26 is located at the lowest point at the center of the platform. The inclined bottom surface of the sliding groove 26 means that after the electric winch stops, under the action of gravity and without the action of external force, the winch body 1 has the tendency to return to the center of the platform along the sliding groove 26.

[0028] The platform is rotatably mounted on the base 3, and the length direction of the sliding groove 26 is parallel to the rotation direction of the winch body 1, so that the fixed arm 4 is always relatively close to the direction of the traction force received by the winch body 1.

[0029] Because the direction of force on an electric winch varies significantly depending on the direction of cable dragging during operation, when the winch is dragging the cable horizontally, it tends to slide horizontally on the ground. However, when the winch is dragging the cable downwards, it tends to overcome gravity and move vertically. Therefore, how to reasonably allocate the connection position between the electric winch and the ground according to the different directions of force has a significant impact on the stable connection between the electric winch and the ground during operation.

[0030] Specifically, in practical applications, after the winch body 1 and the platform are placed on the ground, as the winch body 1 slowly starts, the cable pulled on the winch body 1 gradually straightens. During the straightening process, if the cable is on the ground, the winch body 1 pushes the sliding seat 25 to move within the sliding groove 26 under the mutual traction between the cable and the winch body 1. During the movement of the sliding seat 25, the deflection arms 41 located on both sides of the fixed arm 4 rotate around the hinge column 34 as the center point through the tension of the tension spring 35. Finally, the deflection arms 41 and the fixed arm 4 gradually converge from their initial dispersed arrangement, and the deflection arms 41 and the fixed arm 4 rotate together. Both the rotating arm 41 and the fixed arm 4 converge in the direction of cable extension. Therefore, when the rotating arm 41 and the fixed arm 4 are attracted by the negative pressure of the ground, the difficulty of moving the platform can be effectively increased. If the cable is continuously pulled downward, the traction force on the winch body 1 will be upward. At this time, the winch body 1 is located at the center of the platform under the guidance of gravity and the sliding groove 26. The fixed arm 4 and the rotating arm 41 are evenly distributed in the circumferential direction of the platform. When the connecting arm is attracted by the negative pressure of the ground through the negative pressure suction cup 2, the connected arm in the dispersed state makes the connection position between the platform and the ground more dispersed, thereby enhancing the connection stability between the platform and the ground.

[0031] In a preferred embodiment of the present invention, the platform is composed of a central plate 31 and a lifting plate 32. The lifting plate 32 is slidably sleeved on the central plate 31. A double-headed telescopic rod 42 is embedded in the central plate 31. One end of the double-headed telescopic rod 42 extends into the sliding groove 26 and is located below the sliding seat 25, and the other end extends below the lifting plate 32. The winch body 1 and the lifting plate 32 are driven by the double-headed telescopic rod 42.

[0032] To facilitate the movement of the connecting arm, in this invention, the platform is composed of a center plate 31 and a lifting plate 32. A sliding groove 26 is formed on the center plate 31, and a deflection groove 33 is formed on the lifting plate 32. Initially, under the weight of the winch body 1 and the sliding seat 25, one end of the double-headed telescopic rod 42 located within the sliding groove 26 is compressed, while the other end of the double-headed telescopic rod 42 pushes the lifting plate 32 upward. At this time, there is a certain gap between the negative pressure suction cup 2 on the connecting arm and the ground, thus facilitating the movement of the connecting arm and the platform on the ground. When… When the electric winch is working, as the winch body 1 and the cable pull each other, the winch body 1 and the sliding seat 25 move upward or along the sliding groove 26 under the action of traction force, and finally the sliding seat 25 separates from the double-headed telescopic rod 42. Under the action of gravity, the connecting arm and the lifting plate 32 move downward, which causes the negative pressure suction cup 2 on the connecting arm to stick to the ground. In conjunction with the suction cylinder 21, the air in the negative pressure suction cup 2 is continuously extracted, so that a negative pressure is formed between the negative pressure suction cup 2 and the ground, thereby realizing a stable connection between the platform and the ground.

[0033] In a preferred embodiment of the present invention, each connecting arm is fixedly equipped with an expansion hose 43, which is connected to a one-way air outlet valve. A sliding frame 5 is sleeved on the connecting arm, and the sliding frame 5 and the expansion hose 43 are connected by rollers 51. The length of the expansion hose 43 is less than the length of the connecting arm, and the end of the expansion hose 43 away from the platform is open. A cleaning brush 52 is installed at the bottom of the sliding frame 5.

[0034] Each connecting arm consists of a connecting end and an extension end. The connecting end and the extension end are hinged together. A clamping plate 53 is vertically installed on the platform. In the initial state, the clamping plate 53 fixes the extension end and keeps the extension end in an upright state.

[0035] Since gravel and other debris on the ground can obstruct the connection between the negative pressure suction cup 2 and the ground, in actual application, the connecting end and the extension end of the connecting arm are initially perpendicular. At this time, the clamping plate 53 fixes the extension end. After the operator manually separates the clamping plate 53 from the extension end, the extension end changes from vertical to horizontal under the action of gravity (the rotation angle between the connecting end and the extension end is limited; at the maximum rotation angle, the extension end and the connecting end remain horizontal, and at the minimum rotation angle, the connecting end and the extension end remain perpendicular). Then, the winch body 1 starts. As the suction cylinder 21 continuously pumps air through the one-way air outlet valve into the expansion tube, the end of the expansion tube near the platform will expand. Under the restriction of the roller 51, the air accumulates in the expansion tube, causing the expansion tube to gradually increase in length, thereby pushing the sliding frame 5 to slide along the connecting arm. When the sliding frame 5 slides, the cleaning brush 52 installed at the bottom pushes the gravel on the ground, thereby cleaning the ground below the connecting arm so that the negative pressure suction cup 2 can adhere to the ground.

[0036] In a preferred embodiment of the present invention, a sponge column 54 is fixedly installed on the sliding frame 5, and the bottom opening of the negative pressure suction cup 2 is located on the moving path of the sponge column 54.

[0037] A water storage bottle 55 is installed on the sliding frame 5, and a metering device is installed at the open end of the water storage bottle 55. The metering device is electrically connected to the inner cavity of the sponge column 54.

[0038] The metering device consists of a connecting ring 56, a balance plate 57, and a water supply pipe 58. The connecting ring 56 is electrically connected to the water storage bottle 55. The water supply pipe 58 is installed on the side wall of the connecting ring 56. The balance plate 57 is rotated and sealed inside the connecting ring 56. A through groove 59 is provided on the balance plate 57. Due to the gravity of the balance plate 57, the through groove 59 always remains vertical. To further enhance the adhesion between the negative pressure suction cup 2 and the ground, in practical applications, when the extension end remains vertical, the upper end of the through groove 59 on the balance plate 57 is connected to the water storage bottle 55, and the lower end is blocked by the connecting ring 56, allowing water to flow into the through groove 59. When the extension end deflects to the horizontal, the balance plate 57 remains vertical due to its own weight, thus separating the upper end of the through groove 59 from the water storage bottle 55 and connecting the lower end to the water delivery pipe 58. This allows the water in the through groove 59 to be delivered into the sponge column 54 through the water delivery pipe 58. As the expansion tube gradually expands, the sponge column 54 slides with the sliding frame 5, wetting the negative pressure suction cup 2 during the sliding process. When the negative pressure suction cup 2 adheres to the ground, the presence of water further fills the gap between the negative pressure suction cup 2 and the ground, thereby enhancing the negative pressure connection effect between the negative pressure suction cup 2 and the ground in conjunction with the presence of the suction cylinder 21.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable torque electric winch that can be remotely controlled and has both fixed and dynamic functions, comprising a winch body (1) and a platform, wherein the winch body (1) is mounted on the platform and the platform is placed on the ground; characterized in that It also includes an adsorption and fixing mechanism, which is installed on the platform and is used to enhance the connection strength between the platform and the ground. The adsorption and fixation mechanism includes a connecting arm, a negative pressure suction cup (2), and a suction cylinder (21). The platform is equipped with connecting arms, which are evenly arranged along the circumference of the platform. Negative pressure suction cups (2) are evenly distributed on the side of the connecting arms facing the ground. The suction cylinder (21) is installed on the winch body (1). The suction cylinder (21) is connected to the negative pressure suction cup (2) through a one-way pipe (23). The top of the suction cylinder (21) is open. A one-way air outlet valve is installed on the suction cylinder (21). A piston plate (22) is slidably and sealed inside the suction cylinder (21). A crankshaft (11) is mounted on the winch body (1), and the crankshaft (11) is connected to the piston plate (22) via a hinge shaft (12).

2. A dual purpose fixed or movable variable torque electric winch as claimed in claim 1 wherein: It also includes a fixed point adjustment mechanism, which is mounted on the platform and is used to adjust the relative position of the connecting arm and the platform; The fixed point adjustment mechanism includes a sliding seat (25), a hinge column (34), and a tension spring (35); The platform includes a platform and a base (3). The platform is mounted on the base (3). A sliding groove (26) is provided on the platform. A sliding seat (25) is slidably installed in the sliding groove (26). The winch body (1) is mounted on the sliding seat (25). The connecting arm includes a fixed arm (4) and a deflection arm (41). The fixed arm (4) is fixedly installed on the platform. A deflection groove (33) is provided on the platform. The deflection groove (33) is symmetrically distributed on both sides of the fixed arm (4). A hinge column (34) is rotatably installed in the deflection groove (33). The deflection arm (41) is fixedly connected to the hinge column (34). The sliding seat (25) is equipped with tension springs (35) on both sides. The sliding groove (26) is connected to the deflection groove (33). The tension spring (35) extends into the deflection groove (33) and is connected to the deflection arm (41). In the initial state, the fixed arm (4) and the two deflection arms (41) are arranged at equal intervals in the circumferential direction of the platform.

3. A dual purpose fixed or movable variable torque motorized winch with remote control as defined in claim 2, characterized in that: The bottom surface of the sliding groove (26) is inclined, and the sliding groove (26) is located at the lowest position at the center of the platform.

4. A dual purpose fixed or variable torque motorized winch with remote control as defined in claim 3, characterized in that: The platform is rotatably mounted on the base (3), and the length direction of the sliding groove (26) is parallel to the rotation direction of the winch body (1).

5. A dual purpose stationary-mobile variable torque electric winch as claimed in claim 4 wherein: The platform is composed of a center plate (31) and a lifting plate (32). The lifting plate (32) is slidably sleeved on the center plate (31). A double-headed telescopic rod (42) is inlaid on the center plate (31). One end of the double-headed telescopic rod (42) extends into the sliding groove (26) and is located below the sliding seat (25), and the other end extends below the lifting plate (32). The winch body (1) and the lifting plate (32) are driven by the double-headed telescopic rod (42).

6. A dual purpose stationary-mobile variable torque electric winch as claimed in claim 5 wherein: Each connecting arm is fixedly equipped with an expansion hose (43), which is connected to a one-way air valve. A sliding frame (5) is sleeved on the connecting arm, and the sliding frame (5) and the expansion hose (43) are connected by a roller (51). The length of the expansion hose (43) is less than the length of the connecting arm. The expansion hose (43) is open at one end away from the platform. A cleaning brush (52) is installed at the bottom of the sliding frame (5).

7. A remotely controlled variable torque electric winch for both stationary and motor operation according to claim 6, characterized in that: Each connecting arm consists of a connecting end and an extension end. The connecting end and the extension end are hinged together. A clamping plate (53) is vertically installed on the platform. In the initial state, the clamping plate (53) fixes the extension end and keeps the extension end in an upright state.

8. A dual purpose stationary-mobile variable torque electric winch as claimed in claim 7 wherein: A sponge column (54) is fixedly installed on the sliding frame (5), and the bottom opening of the negative pressure suction cup (2) is located on the moving path of the sponge column (54).

9. A dual purpose stationary-mobile variable torque electric winch as claimed in claim 8 wherein: A water storage bottle (55) is installed on the sliding frame (5), and a metering device is installed at the open end of the water storage bottle (55). The metering device is connected to the inner cavity of the sponge column (54).

10. A dual purpose stationary-mobile variable torque electric winch capable of remote control as defined in claim 9, wherein: The metering device consists of a connecting ring (56), a balance plate (57), and a water supply pipe (58). The connecting ring (56) is connected to the water storage bottle (55). The water supply pipe (58) is installed on the side wall of the connecting ring (56). The balance plate (57) is installed inside the connecting ring (56) with a rotating seal. A through groove (59) is provided on the balance plate (57). Due to the gravity of the balance plate (57), the through groove (59) always remains vertical.

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