Mine ore hoist and method of use

Abstract

The application discloses a mine ore hoist for mine exploitation and a use method, relates to the technical field of mine exploitation, and comprises a U-shaped frame installed on the ground, wherein a steel wire rope is arranged on the U-shaped frame, one end of the steel wire rope is connected with a winding machine, and the other end of the steel wire rope is connected with a bearing platform. The application further comprises an automatic unloading unit. When the bearing platform lifts a trolley loaded with ores to the ground, the trolley is automatically moved from the bearing platform to complete automatic unloading operation. The automatic unloading unit arranged on the hoist can automatically complete unloading operation, greatly improves the working efficiency of the hoist, and the first movable plate is arranged in a downward inclined manner before loading and unloading, so that an operator can push the trolley to the bearing platform by using small force, and meanwhile, the trolley is also stable on the bearing platform.

Description

Technical Field

[0001] The present invention relates to the technical field of mine mining, and in particular to an ore hoist for mine mining and a using method thereof. Background Art

[0002] Ore hoists are key equipment in mining operations, responsible for lifting underground ore, coal, and other resources to the surface. They also handle the vertical transportation of personnel, materials, and equipment. Their operating efficiency directly impacts a mine's production capacity and economic returns, serving as the "throat" connecting the underground and the surface.

[0003] Hoists are driven by electric motors, using steel wire ropes to propel a lifting platform (such as a skip or cage) along a shaft or ramp. Depending on their operating method, they can be categorized as single-rope winding, multi-rope winding, or friction-type hoists. During the hoisting process, a depth indicator system, speed measurement and limiting system, and braking system ensure safe operation.

[0004] When using existing ore hoists, it is generally necessary to manually push the charging cart loaded with ore on the lifting platform down, which is troublesome and affects the ore lifting efficiency of the entire hoist. Therefore, this application provides an ore hoist for mining and a method of use to meet the needs. Summary of the Invention

[0005] The purpose of this application is to provide an ore hoist for mining and a method of use, which is used to solve the technical problem in the prior art that manual unloading is required, which affects the overall ore hoisting efficiency.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an ore hoist used in mining, comprising a U-shaped frame installed on the ground, and a steel wire rope is provided on the U-shaped frame, one end of the steel wire rope is connected to a winder, and the other end of the steel wire rope is connected to a carrying platform, and also includes an automatic unloading unit. When the carrying platform lifts a cart loaded with ore to the ground, the cart automatically moves down from the carrying platform to complete the automatic unloading operation.

[0007] As a preferred implementation in this embodiment, the automatic unloading unit includes a first movable plate, a second movable plate, a transmission gear, an L-shaped gear rod, a gear rod and an interference rod;

[0008] The bearing platform is configured as a box-type structure with an open upper end;

[0009] One end of the first movable plate is rotationally connected to the upper end of the bearing platform, the lower end of the second movable plate is rotationally connected to the other end of the first movable plate through a rotating shaft, and the upper end of the second movable plate is rotationally provided with rollers on the two side walls, and the two groups of rollers are correspondingly and rotationally arranged in the limiting grooves provided with limiting rods on the inner wall of the bearing platform.

[0010] The L-shaped tooth rod and the tooth rod are both slidingly arranged on the limiting plate, the limiting plate is fixedly arranged at the bottom of the inner cavity of the bearing platform, the transmission gear is arranged between the L-shaped tooth rod and the tooth rod and is in meshing connection with the L-shaped tooth rod and the tooth rod respectively, and the gravity of the L-shaped tooth rod is greater than that of the tooth rod.

[0011] The abutting rod is arranged on the U-shaped frame, and the lower end of the abutting rod is located directly above the tooth rod.

[0012] As a preferred embodiment in the embodiment, a speed reduction unit is further included for reducing the movement speed of the trolley, preventing the trolley from colliding with the second movable plate violently, and also preventing the trolley from moving out of the limited range due to excessive kinetic energy after unloading.

[0013] As a preferred embodiment in the embodiment, the speed reduction unit includes a housing fixedly arranged at the lower end of the first movable plate, and four groups of U-shaped plates distributed in a quadrilateral shape.

[0014] A U-shaped jacking plate and a moving block are respectively arranged in the mounting cavity surrounded by the housing inner wall and the corresponding U-shaped plate.

[0015] An abutting inclined surface is arranged on one end of the moving block close to the U-shaped jacking plate, and the abutting inclined surface is connected with a supporting plane.

[0016] A plurality of groups of resistance plates are arranged in rows on the U-shaped jacking plate, and a vertical column is arranged at the lower end of each group of resistance plates, the lower end of the vertical column is movably arranged in a through hole arranged on the U-shaped jacking plate, a return spring is arranged on the periphery of the vertical column, and the upper and lower ends of the return spring are in abutment with the resistance plate and the U-shaped jacking plate respectively, and a through hole adapted to the resistance plate is arranged on the first movable plate.

[0017] As a preferred embodiment in the embodiment, two groups of baffles are oppositely arranged on the first movable plate, and an inclined plate is fixedly arranged on the same side end of each group of baffles, and the two groups of inclined plates are arranged in an eight-character shape.

[0018] As a preferred embodiment in the embodiment, two groups of long vertical rods are oppositely arranged at the lower end of the U-shaped frame, and a limiting groove adapted to a sliding block is arranged on the U-shaped frame and the two groups of long vertical rods, and the sliding block is arranged at the side end of the bearing platform.

[0019] A method for using an ore hoist for mining, comprising the following steps:

[0020] S1: Underground workers can directly push the cart onto the inclined first movable plate 4;

[0021] S2: Under the action of the winder, the carrying platform 1 moves upward, and the lower end of its resistance rod 13 will contact the upper end of the suspended gear rod 12. As the carrying platform 1 continues to move upward, the gear rod 12 will move downward relative to the transmission gear 9, and the transmission gear 9 will cause the L-shaped gear rod 11 to move upward, thereby lifting one end of the first movable plate 4. When the original tilted end of the first movable plate 4 is set to the bottom end and the upper end surface of the original tilted end is flush with the ground, the cart will move from the first movable plate 4 to the ground under the action of gravity, completing the automatic unloading operation;

[0022] S3: After the trolley is completely moved away, the winder performs the rope-releasing operation, the carrying platform 1 moves downward, the resistance rod 13 contacts and separates from the gear rod 12, and under the action of the gravity of the first movable plate 4, the second movable plate 5 and the L-shaped gear rod 11, each component eventually returns to its original position.

[0023] In summary, the technical effects and advantages of the present invention are as follows:

[0024] 1. The present invention has a reasonable structure. An automatic unloading unit is provided on the elevator, which can automatically complete the unloading operation, greatly improving the working efficiency of the elevator. In addition, during loading and before unloading, the first movable plate is arranged obliquely downward, so that the operator can push the cart onto the load-bearing platform with less force, which is also conducive to the stability of the cart on the load-bearing platform.

[0025] 2. In the present invention, a deceleration unit is provided to reduce or prevent the collision between the cart and the second movable plate, which is beneficial to avoid the ore in the cart falling due to excessive collision. At the same time, it prevents the cart from colliding violently with the previous cart that has not been removed by the workers in time or moving out of the limit range due to excessive kinetic energy, which may cause a safety accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2for Figure 1 Schematic diagram of the middle load-bearing platform structure;

[0029] Figure 3 for Figure 2 Schematic diagram of the automatic unloading unit structure;

[0030] Figure 4 for Figure 3 Schematic diagram of the side cross-sectional structure of the middle shell;

[0031] Figure 5 This is a schematic diagram of the installation of the present invention.

[0032] In the figure: 1. Load-bearing platform; 2. U-shaped frame; 3. Steel wire rope; 4. First movable plate; 5. Second movable plate; 6. Limit rod; 7. Roller; 8. Rotating shaft; 9. Transmission gear; 10. Limit plate; 11. L-shaped gear rod; 12. Gear rod; 13. Interference rod; 14. U-shaped plate; 15. Moving block; 16. Interference inclined plane; 17. Support plane; 18. U-shaped lifting plate; 19. Retarding plate; 20. Return spring; 21. Column; 22. Shell; 23. Baffle; 24. Inclined plate; 25. Slider; 26. Long vertical rod. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example: Reference Figure 1-2 The ore hoist shown is used in a mine, including a U-shaped frame 2 installed on the ground, and a wire rope 3 is provided on the U-shaped frame 2. One end of the wire rope 3 is connected to a winder, and the other end of the wire rope 3 is connected to a carrying platform 1. It also includes an automatic unloading unit. When the carrying platform 1 lifts a cart loaded with ore to the ground, the cart automatically moves down from the carrying platform 1 to complete the automatic unloading operation.

[0035] As a preferred implementation in this embodiment, Figure 1-3 As shown, the automatic unloading unit includes a first movable plate 4, a second movable plate 5, a transmission gear 9, an L-shaped gear rod 11, a gear rod 12 and an interference rod 13;

[0036] The carrying platform 1 is configured as a box-type structure with an open upper end;

[0037] One end of the first movable plate 4 is rotatably connected to the upper end of the bearing platform 1, the lower end of the second movable plate 5 is rotatably connected to the other end of the first movable plate 4 through the rotating shaft 8, the upper end of the second movable plate 5 is rotatably provided with the rollers 7 on the two side walls, and the two groups of rollers 7 are correspondingly and rollingly arranged in the limiting grooves provided with the limiting rods 6 on the inner walls of the bearing platform 1;

[0038] The L-shaped toothed rod 11 and the toothed rod 12 are slidably arranged on the limiting plate 10, the limiting plate 10 is fixedly arranged at the bottom of the inner cavity of the bearing platform 1, the transmission gear 9 is arranged between the L-shaped toothed rod 11 and the toothed rod 12 and is in meshing connection with the L-shaped toothed rod 11 and the toothed rod 12 respectively, and the gravity of the L-shaped toothed rod 11 is greater than that of the toothed rod 12;

[0039] The abutting rod 13 is arranged on the U-shaped frame 2, and the lower end of the abutting rod 13 is located directly above the toothed rod 12.

[0040] At the beginning, the first movable plate 4 and the second movable plate 5 are in the inclined state as shown in Figure 4 , during use, the underground worker can directly push the trolley to the first movable plate 4, since the first movable plate 4 is arranged in a downward slope, the operator can push the trolley to the bearing platform 1 with smaller force, and it is also beneficial to the stability of the trolley on the bearing platform 1;

[0041] The steel wire rope 3 is wound by the winding machine, so that the bearing platform 1 is lifted, with the upward movement of the bearing platform 1, the lower end of the abutting rod 13 will contact the upper end of the toothed rod 12 (the toothed rod 12 is suspended due to the gravity of the L-shaped toothed rod 11), with the continuous upward movement of the bearing platform 1, the toothed rod 12 will move downward relative to the transmission gear 9, and the L-shaped toothed rod 11 will move upward through the transmission gear 9, so that one end of the first movable plate 4 is lifted, when the original lifted end of the first movable plate 4 is arranged as the bottom end and the upper end surface of the original lifted end is flush with the ground, the trolley will move from the first movable plate 4 to the ground by gravity, and the automatic unloading operation is completed, after the trolley is completely removed, the winding machine is operated to release the rope, the bearing platform 1 moves downward, the abutting rod 13 is separated from the toothed rod 12, under the action of the gravity of the first movable plate 4, the second movable plate 5 and the L-shaped toothed rod 11, the components finally return to the original position and are as shown in Figure 4 , the ore lifting machine can automatically complete the unloading operation, and the working efficiency of the lifting machine is greatly improved, during the loading and before the unloading, the first movable plate 4 is arranged in a downward slope, so that the operator can push the trolley to the bearing platform 1 with smaller force, and it is also beneficial to the stability of the trolley on the bearing platform 1.

[0042] It should be noted that, first, a groove is provided at the underground loading location, and the groove can be reinforced by pouring concrete, so that when the lower end of the carrying platform 1 contacts the bottom of the inner cavity of the groove, the raised end of the first movable plate 4 is flush with the underground ground, which facilitates the trolley to be pushed onto the first movable plate 4; second, a set of rollers can be provided at the upper end of the L-shaped gear rod 11, and the upper ends of the rollers are in rolling contact with the lower end of the first movable plate 4, which can reduce the friction between the L-shaped gear rod 11 and the first movable plate 4; third, as Figure 4 As shown, at the beginning, the angle between the first movable plate 4 and the horizontal plane is set between 15° and 23°, so as to avoid the angle being too small and prolonging the time required for the cart to move to the carrying platform 1, and also to avoid the angle being too large and causing a more intense collision between the cart and the second movable plate 5, which may cause the ore in the car to fall and affect the service life of the components. When unloading, the final angle between the first movable plate 4 and the horizontal plane is also set between 15° and 23°, so as to avoid the angle being too large and causing the cart to move too fast and cause an accident, and also to avoid the angle being too small and affecting the unloading speed; Fourth, this elevator is mainly used to transport the carts underground to the ground, and can also move the carts above the ground to the underground (this operation is more laborious and troublesome, and can be selected according to actual conditions). After the first movable plate 4 is restored as shown in FIG. Figure 4 After the state shown, the empty cart can be pushed onto the first movable plate 4 and the empty cart can be transported from underground to underground.

[0043] As a preferred implementation in this embodiment, a deceleration unit is also included to reduce the movement speed of the cart to prevent the cart from colliding violently with the second movable plate 5, and also to prevent the cart from moving out of the limited range due to excessive kinetic energy after unloading.

[0044] A deceleration unit is provided to decelerate the moving cart in the latter half of its movement onto the carrying platform 1, thereby reducing or preventing the collision between the cart and the second movable plate 5, and helping to avoid the ore in the cart from falling out due to excessive collision. At the same time, when the cart automatically moves to unload materials, the deceleration unit is used to decelerate the moving cart in the latter half of its movement, thereby preventing it from colliding violently with the previous cart that has not been removed in time by the workers, or from moving out of the limit range due to excessive kinetic energy, thereby causing a safety accident.

[0045] As a preferred implementation in this embodiment, Figure 4 As shown, the deceleration unit includes a housing 22 fixedly arranged at the lower end of the first movable plate 4 and four sets of U-shaped plates 14 distributed at four corners;

[0046] The U-shaped lifting plate 18 and the moving block 15 are respectively provided in the installation cavity surrounded by the inner wall of the housing 22 and the corresponding U-shaped plate 14;

[0047] The end of the moving block 15 close to the U-shaped lifting plate 18 is provided with a resisting inclined surface 16, and the resisting inclined surface 16 is connected to the supporting plane 17;

[0048] A plurality of groups of damping plates 19 are arranged in a row on the U-shaped jacking plate 18, and a column 21 is provided at the lower end of each group of damping plates 19. The lower end of the column 21 is movably set in a through hole set on the U-shaped jacking plate 18, and a return spring 20 is provided on the periphery of the column 21, and the upper and lower ends of the return spring 20 respectively contact the damping plate 19 and the U-shaped jacking plate 18, and a through hole adapted to the damping plate 19 is provided on the first movable plate 4.

[0049] like Figure 4 As shown, when the trolley has not moved onto the carrying platform 1, the moving block 15 close to the side of the trolley contacts the U-shaped plate 14, and the lower end of the corresponding U-shaped lifting plate 18 contacts the bottom of the inner cavity of the shell 22 (the upper end of the corresponding buffer plate 19 is located in the through hole), and the moving block 15 away from the trolley causes the conflicting inclined surface 16 to conflict with the side end of the U-shaped lifting plate 18 through the component force of its own gravity, and causes the U-shaped lifting plate 18 to move upward, and finally causes the lower end surface of the U-shaped lifting plate 18 to conflict with the supporting plane 17 on the moving block 15, and the upper end of the corresponding buffer plate 19 When the rear end of the cart passes through the through hole and moves on the carrying platform 1, its front wheels will contact the slow-down plate 19 which is higher than the upper end surface of the first movable plate 4 and squeeze the slow-down plate 19, eventually causing the cart speed to drop and decelerate to zero, so that the cart stays steadily on the first movable plate 4 (avoiding collision with the second movable plate 5). Several sets of slow-down plates 19 can be provided, which is conducive to the smooth deceleration of the cart. In the second half, the front wheels are blocked by the slow-down plates 19, which is conducive to the rapid movement of the cart onto the carrying platform 1, shortening the time required for the cart to completely move onto the carrying platform 1.

[0050] When the first movable plate 4 moves upward, the tilt state of the first movable plate 4 changes, and its original tilted end becomes the bottom end, and the original bottom end becomes the tilted end. During this state change process, the moving block 15 corresponding to the front wheel of the cart moves toward the U-shaped plate 14 and finally contacts it, and its supporting plane 17 moves out of the lower end of the U-shaped lifting plate 18. The U-shaped lifting plate 18 moves downward, and finally the upper end of the corresponding buffer plate 19 moves into the through hole, and the moving block 15 corresponding to the rear wheel of the cart moves close to the corresponding The movement of the U-shaped lifting plate 18 eventually causes the supporting plane 17 to support the lower end surface of the U-shaped lifting plate 18, and the upper end of the corresponding buffer plate 19 moves out of the through hole. In the second half of the movement of the cart to unload materials, the buffer plate 19 only buffers the front wheels of the cart (which is beneficial to shorten the time required for the cart to move away from the load-bearing platform 1 and promote the working efficiency of the elevator), slows it down, and eventually moves the cart down from the load-bearing platform 1 and stays within a limited range. After completion, each component automatically returns to its original position.

[0051] As a preferred embodiment in the present embodiment, as shown in body 3, two groups of baffle plates 23 are oppositely arranged on the first movable plate 4, and the same side end of each group of baffle plates 23 is fixed with a slope plate 24, and the two groups of slope plates 24 are arranged in a spread shape.

[0052] The slope plate 24 can guide the movement of the trolley, which is conducive to the stable movement of the trolley on or off the carrying platform 1.

[0053] As a preferred embodiment in the present embodiment, as shown in body 3, two groups of baffle plates 23 are oppositely arranged on the first movable plate 4, and the same side end of each group of baffle plates 23 is fixed with a slope plate 24, and the two groups of slope plates 24 are arranged in a spread shape. Figure 1 Figure 2 As shown in body 3, the lower end of the U-shaped frame 2 is oppositely provided with two groups of long vertical rods 26, and the long vertical rods 26 and the U-shaped frame 2 are provided with limiting grooves matched with the sliding blocks 25, and the sliding blocks 25 are installed on the side end of the carrying platform 1.

[0054] The purpose is to ensure the stability of the carrying platform 1 during movement.

[0055] A method for using an ore hoist in mine exploitation, comprising the following steps:

[0056] S1: The underground worker can directly push the trolley to the first movable plate 4 arranged in an inclined manner;

[0057] S2: Under the action of the winding machine, the carrying platform 1 moves upward, and the lower end of the abutting rod 13 contacts the upper end of the overhanging toothed rod 12, and with the continuous upward movement of the carrying platform 1, the toothed rod 12 moves downward relative to the transmission gear 9, and the L-shaped toothed rod 11 moves upward through the transmission gear 9, so that one end of the first movable plate 4 is lifted up, and when the original lifted end of the first movable plate 4 is arranged as the bottom end and the upper end surface of the original lifted end is flush with the ground, the trolley will move from the first movable plate 4 to the ground under the action of gravity, and the automatic unloading operation is completed;

[0058] S3: After the trolley is completely removed, the winding machine performs the rope releasing operation, the carrying platform 1 moves downward, the abutting rod 13 and the toothed rod 12 are in contact and separated, and under the action of the gravity of the first movable plate 4, the second movable plate 5 and the L-shaped toothed rod 11, each component finally returns to the original position.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or replace some technical features with equivalent ones, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.​

Claims

1. An ore hoist for mining, comprising a U-shaped frame (2) mounted on the ground, wherein a steel wire rope (3) is provided on the U-shaped frame (2), one end of the steel wire rope (3) is connected to a winder, and the other end of the steel wire rope (3) is connected to a bearing platform (1), characterized in that: It also includes an automatic unloading unit, when the carrying platform (1) lifts the cart loaded with ore to the ground, the cart automatically moves down from the carrying platform (1) to complete the automatic unloading operation; The automatic unloading unit comprises a first movable plate (4), a second movable plate (5), a transmission gear (9), an L-shaped gear rod (11), a gear rod (12), and an interference rod (13); The carrying platform (1) is configured as a box-type structure with an open upper end; One end of the first movable plate (4) is rotatably connected to the upper end of the carrying platform (1), and the lower end of the second movable plate (5) is rotatably connected to the other end of the first movable plate (4) via a rotating shaft (8). Rollers (7) are rotatably provided on both side walls of the upper end of the second movable plate (5), and the two groups of rollers (7) are correspondingly and rollingly provided in the limiting groove of the limiting rod (6) provided on the inner wall of the carrying platform (1); The L-shaped toothed rod (11) and the toothed rod (12) are both slidably arranged on a limit plate (10), the limit plate (10) is fixedly arranged at the bottom of the inner cavity of the bearing platform (1), the transmission gear (9) is arranged between the L-shaped toothed rod (11) and the toothed rod (12) and is respectively meshed with the L-shaped toothed rod (11) and the toothed rod (12), and the gravity of the L-shaped toothed rod (11) is greater than the gravity of the toothed rod (12); The interference rod (13) is arranged on the U-shaped frame (2), and the lower end of the interference rod (13) is located directly above the gear rod (12).

2. The ore hoist for mining according to claim 1, characterized in that: It also includes a deceleration unit for reducing the movement speed of the cart to prevent the cart from violently colliding with the second movable plate (5), and also to prevent the cart from moving out of the limited range due to excessive kinetic energy after unloading.

3. The ore hoist for mining according to claim 2, characterized in that: The deceleration unit comprises a housing (22) fixedly arranged at the lower end of the first movable plate (4), and four groups of U-shaped plates (14) distributed at four corners; A U-shaped lifting plate (18) and a moving block (15) are respectively provided in the installation cavity enclosed by the inner wall of the shell (22) and the corresponding U-shaped plate (14); An abutting inclined surface (16) is provided on one end of the moving block (15) close to the U-shaped lifting plate (18), and the abutting inclined surface (16) is connected to the supporting plane (17); A plurality of groups of damping plates (19) are arranged in a row on the U-shaped lifting plate (18), and a column (21) is provided at the lower end of each group of the damping plates (19). The lower end of the column (21) is movably arranged in a through hole provided on the U-shaped lifting plate (18). A return spring (20) is provided on the periphery of the column (21), and the upper and lower ends of the return spring (20) respectively contact the damping plates (19) and the U-shaped lifting plate (18). The first movable plate (4) is provided with a through hole adapted to the damping plates (19).

4. The ore hoist for mining according to claim 1, characterized in that: Two groups of baffles (23) are arranged opposite to each other on the first movable plate (4), and inclined plates (24) are fixed on the same side ends of the two groups of baffles (23), and the two groups of inclined plates (24) are arranged in an eight-shaped shape.

5. The ore hoist for mining according to claim 1, characterized in that: Two groups of long vertical rods (26) are arranged opposite to each other at the lower end of the U-shaped frame (2), and both the two groups of long vertical rods (26) and the U-shaped frame (2) are provided with limiting grooves adapted to the slider (25), and the slider (25) is installed at the side end of the carrying platform (1).

6. A method for using an ore hoist for mining according to any one of claims 1 to 5, characterized in that: The steps include: S1: Underground workers can directly push the cart onto the inclined first movable plate (4); S2: Under the action of the winder, the carrying platform (1) moves upward, and the lower end of the contact rod (13) contacts the upper end of the suspended toothed rod (12). As the carrying platform (1) continues to move upward, the toothed rod (12) moves downward relative to the transmission gear (9), and the L-shaped toothed rod (11) moves upward through the transmission gear (9), thereby lifting one end of the first movable plate (4). When the original tilted end of the first movable plate (4) is set to the bottom end and the upper end surface of the original tilted end is flush with the ground, the trolley will move from the first movable plate (4) to the ground under the action of gravity, completing the automatic unloading operation; S3: After the trolley is completely moved away, the winder performs the rope-releasing operation, the carrying platform (1) moves downward, the contact rod (13) and the gear rod (12) come into contact and separate, and under the action of the gravity of the first movable plate (4), the second movable plate (5) and the L-shaped gear rod (11), the various components eventually return to their original positions.

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