Material transfer equipment for long, large and deep foundation pits and method of use

Abstract

This invention relates to the field of transportation equipment, specifically to a material transfer device and method for long and deep foundation pits. The device includes a walking assembly, a first pulley assembly, a second pulley assembly, a third pulley assembly, and a conveyor belt. The first pulley assembly is mounted on top of the walking assembly via a rotating shaft. The second pulley assembly is located inside the first pulley assembly, and the third pulley assembly is located at the bottom of the second pulley assembly. The conveyor belt is fitted over the first, second, and third pulley assemblies. This invention employs a tracked walking and rotating structure, enabling flexible relocation and full-section coverage. It solves the problems of single transfer paths and limited coverage of traditional equipment, improving the flexibility of material transfer. Through multi-stage hydraulics and three-stage angle adjustment, it achieves vertical lifting, horizontal conveying, and bending transfer, solving the problem of poor vertical and horizontal connection, reducing operational breakpoints, and improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of transportation equipment, and more specifically to a material transfer device and its method of use for long and deep foundation pits. Background Technology

[0002] In urban underground space development, rail transit construction, and large-scale municipal engineering projects, long and deep foundation pits have become the mainstream construction method. These pits are characterized by large excavation depths, long work lines, narrow spaces, and complex working conditions. Material transfer is a key factor restricting construction efficiency and safety. Traditional deep foundation pit material transportation methods mostly rely on tower cranes, construction elevators, small winches, or manual handling. These methods suffer from problems such as single transfer paths, limited coverage, poor vertical and horizontal connections, and numerous work interruptions, making them unsuitable for the full-section, high-efficiency material transportation needs of long and deep foundation pits. To address these technical shortcomings and improve the continuity, flexibility, and safety of deep foundation pit material transfer, a material transfer device and its usage method for long and deep foundation pits are proposed. Summary of the Invention

[0003] In order to solve the technical problems existing in the prior art, the present invention provides a material transfer device for long and deep foundation pits;

[0004] A material transfer device for long and deep foundation pits includes a traveling assembly, a first pulley assembly, a second pulley assembly, a third pulley assembly, and a conveyor belt;

[0005] The first pulley assembly is mounted on the top of the traveling assembly via a rotating shaft, the second pulley assembly is disposed inside the first pulley assembly, the third pulley assembly is disposed at the bottom of the second pulley assembly, and the conveyor belt is sleeved on the outside of the first pulley assembly, the second pulley assembly, and the third pulley assembly.

[0006] Preferably, the walking assembly includes a tracked walking section, a set of rotating movable parts is installed on the top of the tracked walking section, a set of movable brackets is installed on one side of the rotating movable parts via a rotating shaft, and two sets of first hydraulic rods are installed on the other side of the rotating movable parts via a rotating shaft, with the extended ends of the first hydraulic rods connected to the middle of the movable brackets.

[0007] Preferably, the first pulley assembly includes a first pulley compartment, the second pulley assembly is mounted on the bottom of the first pulley compartment via a rotating shaft, a set of embedded sliding rods are installed in the middle of the side wall of the first pulley compartment, the first pulley compartment is engaged inside the movable bracket via the embedded sliding rods, a set of second hydraulic rods are mounted on the top of the first pulley compartment via a rotating shaft, the bottom end of the second hydraulic rods is connected to the middle of the outer wall of the movable bracket, two sets of third hydraulic rods are mounted on the lower end of the first pulley compartment via a rotating shaft, the protruding end of the third hydraulic rods is connected to the second pulley assembly, and a set of drive rollers are installed inside the top of the first pulley compartment.

[0008] Preferably, the second pulley assembly includes a second pulley compartment, the top of which is mounted to the bottom of the first pulley compartment via a pivot, a third pulley assembly is mounted to the bottom of the second pulley compartment via a pivot, a support portion is mounted in the middle of the side wall of the second pulley compartment, the upper part of the support portion is connected to the extended end of the third hydraulic rod via a pivot, and a fourth hydraulic rod is mounted to the lower part of the support portion via a pivot.

[0009] Preferably, the third pulley assembly includes a corner connecting part, the top end of which is mounted to the bottom end of the second pulley compartment via a rotating shaft, the protruding end of the fourth hydraulic rod is connected to the upper part of the corner connecting part via a rotating shaft, a set of third pulley compartments is installed inside the corner connecting part, a set of sliding rollers that can slide parallel to the third pulley compartments are provided in a section inside the third pulley compartments, two sets of fifth hydraulic rods are mounted in the middle part of the corner connecting part via a rotating shaft, the protruding ends of the two sets of fifth hydraulic rods are respectively connected to the two ends of the sliding rollers, the sliding rollers are pushed by the fifth hydraulic rods, and a hopper is provided on the top of the third pulley compartment.

[0010] Preferably, the conveyor belt is disposed between the outside of the first pulley compartment, the second pulley compartment and the corner connection part, the drive roller drives the conveyor belt, and a number of baffles are evenly spaced on the surface of the conveyor belt, the baffles being used to lift materials.

[0011] Preferably, the first pulley compartment is L-shaped, the vertical portion of the first pulley compartment is provided inside the movable bracket, and the drive roller is provided in the horizontal portion of the first pulley compartment.

[0012] Preferably, the vertical length of the first pulley compartment is the same as the length of the movable bracket, and the movable distance of the extended end of the second hydraulic rod is less than the vertical length of the first pulley compartment.

[0013] Preferably, the adjustable angle range of the first pulley compartment relative to the rotating movable part is 0-90°, the adjustable angle range of the second pulley compartment relative to the first pulley compartment is 0-60°, and the adjustable angle range of the corner connecting part relative to the second pulley compartment is 0-90°.

[0014] A method of using a material transfer device for long and deep foundation pits includes the following steps:

[0015] Step S1: Start the tracked walking unit of the walking assembly and move the whole machine to the designated position in the long and deep foundation pit operation area; control the rotating movable part to turn towards the foundation pit, control the first hydraulic rod to extend, and push the movable support to rotate around the rotating shaft to a vertical state, thus completing the initial positioning of the equipment's working posture.

[0016] Step S2: Activate the second hydraulic rod to retract it, causing the first pulley chamber to move vertically downward along the movable support via the embedded slide bar, simultaneously moving the second and third pulley assemblies downward; after the third pulley assembly reaches the working height in the pit, lock the second hydraulic rod to complete the height positioning of the conveying mechanism.

[0017] Step S3: Control the extension and retraction of the third hydraulic rod to pull the second pulley compartment to rotate around the shaft and adjust the angle between it and the first pulley compartment to a suitable angle within the range of 0-60°; then start the fourth hydraulic rod to drive the corner connection part to rotate around the shaft and adjust the angle between it and the second pulley compartment to a suitable angle within the range of 0-90°, so that the conveyor belt adapts to the pit transfer angle.

[0018] Step S4: Activate the two sets of fifth hydraulic rods to extend synchronously, push the sliding roller shaft to slide parallel in the third pulley compartment, support the conveyor belt to make it fully taut, eliminate belt slack, and ensure that the material does not slip or fall off during conveying.

[0019] Step S: The material to be transferred is put into the hopper, and the material is evenly distributed on the surface of the conveyor belt through the hopper; the drive roller is started to drive the conveyor belt to rotate in a cycle, and the baffle plate on the surface of the belt moves with the belt, continuously lifting the material from the pit upward and laterally conveying it to the designated unloading position outside the pit.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. This invention adopts a tracked walking and rotating structure, which can be flexibly transferred and cover the entire cross section, solving the problems of single transfer path and limited coverage of traditional equipment, and improving the flexibility of material transfer.

[0022] 2. This invention achieves vertical lifting, horizontal conveying, and bending transfer through multi-stage hydraulics and three-stage angle adjustment, solving the problem of poor vertical and horizontal connection, ensuring continuous and smooth material conveying, reducing work interruptions, and improving construction efficiency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the walking component of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the first pulley assembly of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the second pulley assembly of the present invention;

[0027] Figure 5 This is a three-dimensional structural diagram of the third pulley assembly of the present invention.

[0028] The numbers in the diagram represent: 1. Walking assembly; 11. Tracked walking part; 12. Rotating moving part; 13. Movable support; 14. First hydraulic rod; 2. First pulley assembly; 21. First pulley compartment; 22. Embedded slide bar; 23. Second hydraulic rod; 24. Third hydraulic rod; 25. Drive roller shaft; 3. Second pulley assembly; 31. Second pulley compartment; 32. Support part; 33. Fourth hydraulic rod; 4. Third pulley assembly; 41. Corner connection part; 42. Third pulley compartment; 43. Sliding roller shaft; 44. Fifth hydraulic rod; 45. Hopper; 5. Conveyor belt; 51. Baffle plate. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, which illustrate the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0030] Example:

[0031] like Figures 1-5 As shown, a material transfer device for long and deep foundation pits includes a walking assembly 1, a first pulley assembly 2, a second pulley assembly 3, a third pulley assembly 4, and a conveyor belt 5.

[0032] The first pulley assembly 2 is mounted on the top of the traveling assembly 1 via a rotating shaft. The second pulley assembly 3 is located inside the first pulley assembly 2. The third pulley assembly 4 is located at the bottom of the second pulley assembly 3. The conveyor belt 5 is sleeved on the outside of the first pulley assembly 2, the second pulley assembly 3, and the third pulley assembly 4.

[0033] The walking assembly 1 includes a tracked walking part 11. A set of rotating movable parts 12 is installed on the top of the tracked walking part 11. A set of movable brackets 13 is installed on one side of the rotating movable part 12 via a rotating shaft. Two sets of first hydraulic rods 14 are installed on the other side of the rotating movable part 12 via a rotating shaft. The extended end of the first hydraulic rods 14 is connected to the middle of the movable brackets 13.

[0034] During operation, the tracked walking unit 11 operates under the control of the operator. The running tracked walking unit 11 drives the first pulley assembly 2, the second pulley assembly 3, and the third pulley assembly 4 to move to the work area. The rotating movable part 12 on the top of the tracked walking unit 11 rotates. The first pulley assembly 2, the second pulley assembly 3, and the third pulley assembly 4 are driven by the rotating movable part 12 and move towards the pit. The extension of the first hydraulic rod 14 pushes the movable bracket 13 to rotate around the pivot. The movable bracket 13 is erected on the side of the rotating movable part 12 under the push of the first hydraulic rod 14. The first pulley assembly 2, the second pulley assembly 3, and the third pulley assembly 4, which are set inside the movable bracket 13, are synchronously kept erect.

[0035] The first pulley assembly 2 includes a first pulley compartment 21. The second pulley assembly 3 is mounted on the bottom end of the first pulley compartment 21 via a rotating shaft. A set of embedded sliding rods 22 are installed in the middle of the side wall of the first pulley compartment 21. The first pulley compartment 21 is engaged inside the movable bracket 13 by the embedded sliding rods 22. The vertical length of the first pulley compartment 21 is the same as the length of the movable bracket 13. A set of second hydraulic rods 23 are mounted on the top end of the first pulley compartment 21 via a rotating shaft. The bottom end of the second hydraulic rods 23 is connected to the middle of the outer wall of the movable bracket 13. The movable distance of the extended end of the second hydraulic rods 23 is less than the vertical length of the first pulley compartment 21. When the second hydraulic rods 23 reach the maximum extension distance, the first pulley compartment 21 will not disengage from the inside of the movable bracket 13. Two sets of third hydraulic rods 24 are mounted on the lower end of the first pulley compartment 21 via a rotating shaft. The extended end of the third hydraulic rods 24 is connected to the second pulley assembly 3. A set of drive rollers 25 are installed inside the top end of the first pulley compartment 21.

[0036] After the movable support 13 is erected, the extended end of the second hydraulic rod 23 retracts. Driven by the second hydraulic rod 23, the first pulley chamber 21 moves vertically downward along the movable support 13. The second pulley assembly 3 and the third pulley assembly 4, installed at the bottom of the first pulley chamber 21, move downward synchronously with the first pulley chamber 21. When the setting position of the third pulley assembly 4 meets the usage requirements, the second hydraulic rod 23 stops retracting and remains in a fixed position. At this time, the height positions of the first pulley chamber 21, the second pulley assembly 3, and the third pulley assembly 4 remain fixed. When it is necessary to further adjust the tilt angle of the second pulley assembly 3, the telescopic end of the third hydraulic rod 24 moves and pulls the second pulley assembly 3 during the movement, causing the second pulley assembly 3 to rotate around the pivot. The rotating second pulley assembly 3 adjusts the angle between itself and the traveling assembly 1. When the setting position of the second pulley assembly 3 meets the usage requirements, the third hydraulic rod 24 stops working and remains in a fixed position.

[0037] The second pulley assembly 3 includes a second pulley compartment 31. The top of the second pulley compartment 31 is mounted to the bottom of the first pulley compartment 21 via a rotating shaft. A third pulley assembly 4 is mounted to the bottom of the second pulley compartment 31 via a rotating shaft. A support part 32 is mounted in the middle of the side wall of the second pulley compartment 31. The upper part of the support part 32 is connected to the protruding end of the third hydraulic rod 24 via a rotating shaft. A fourth hydraulic rod 33 is mounted to the lower part of the support part 32 via a rotating shaft.

[0038] When the second pulley chamber 31 reaches the designated position under the pull of the third hydraulic rod 24, the fourth hydraulic rod 33 works according to the angle requirement of the third pulley assembly 4. The extended end of the fourth hydraulic rod 33 drives the third pulley assembly 4 to rotate around the shaft. After the third pulley assembly 4 reaches the predetermined position during the rotation, the fourth hydraulic rod 33 stops working.

[0039] The third pulley assembly 4 includes a corner connecting part 41. The top end of the corner connecting part 41 is mounted to the bottom end of the second pulley chamber 31 via a rotating shaft. The protruding end of the fourth hydraulic rod 33 is connected to the upper part of the corner connecting part 41 via a rotating shaft. A set of third pulley chambers 42 is installed inside the corner connecting part 41. A set of sliding rollers 43 that can slide parallel to the third pulley chamber 42 is provided in a section inside the third pulley chamber 42. Two sets of fifth hydraulic rods 44 are mounted in the middle of the corner connecting part 41 via a rotating shaft. The protruding ends of the two sets of fifth hydraulic rods 44 are respectively connected to the two ends of the sliding rollers 43. The sliding rollers 43 are pushed by the fifth hydraulic rods 44. A hopper 45 is provided on the top of the third pulley chamber 42.

[0040] When the corner connection 41 reaches the designated position under the pull of the fourth hydraulic rod 33, the two sets of fifth hydraulic rods 44 work simultaneously. The extended end of the fifth hydraulic rod 44 pushes the sliding roller shaft 43, causing the sliding roller shaft 43 to move laterally. During the lateral movement, the sliding roller shaft 43 pushes the end of the conveyor belt 5. The conveyor belt 5 is straightened after being pushed by the sliding roller shaft 43, and material is loaded into the hopper 45. The material is spread on the surface of the conveyor belt 5 under the guidance of the hopper 45.

[0041] The adjustable angle range of the first pulley chamber 21 relative to the rotating movable part 12 is 0-90°, the adjustable angle range of the second pulley chamber 31 relative to the first pulley chamber 21 is 0-60°, and the adjustable angle range of the corner connecting part 41 relative to the second pulley chamber 31 is 0-90°. By adjusting the setting angles of the first pulley chamber 21, the second pulley chamber 31, and the corner connecting part 41, the first pulley chamber 21, the second pulley chamber 31, and the corner connecting part 41 can be configured in horizontal, vertical, inclined, and bent shapes to better adapt to different functional requirements.

[0042] The conveyor belt 5 is located between the first pulley chamber 21, the second pulley chamber 31 and the corner connecting part 41. The drive roller 25 drives the conveyor belt 5. Several sets of baffles 51 are evenly spaced on the surface of the conveyor belt 5. The baffles 51 are used to lift the material. After the sliding roller 43 pushes the conveyor belt 5 to make the conveyor belt 5 taut, the conveyor belt 5 enters the working state. During the operation of the conveyor belt 5, the baffles 51 on the surface continuously push the material away.

[0043] The first pulley compartment 21 is L-shaped. The vertical part of the first pulley compartment 21 is housed inside the movable bracket 13, and the drive roller 25 is located in the horizontal part of the first pulley compartment 21. The L-shaped configuration of the first pulley compartment 21 can deliver materials horizontally and prevent them from spilling. The drive roller 25 can drive the conveyor belt 5 to rotate after the conveyor belt 5 is taut, so that the conveyor belt 5 rotates along the first pulley compartment 21, the second pulley compartment 31 and the corner connection part 41. During the continuous rotation, the conveyor belt 5 works with the baffle plate 51 to lift and convey the materials.

[0044] A material transfer device for long and deep foundation pits and its usage method include the following steps:

[0045] Step S1: Start the tracked walking unit 11 of the walking assembly 1 to move the whole machine to the designated position in the long and deep foundation pit operation area; control the rotating movable unit 12 to turn towards the foundation pit, control the first hydraulic rod 14 to extend, push the movable support 13 to rotate around the rotating shaft to a vertical state, and complete the initial positioning of the equipment's working posture.

[0046] Step S2: Activate the second hydraulic rod 23 to retract it, causing the first pulley chamber 21 to move vertically downward along the movable bracket 13 via the embedded slide rod 22, simultaneously causing the second pulley assembly 3 and the third pulley assembly 4 to move downward; after the third pulley assembly 4 reaches the working height in the pit, lock the second hydraulic rod 23 to complete the height positioning of the conveying mechanism.

[0047] Step S3: Control the extension and retraction of the third hydraulic rod 24 to pull the second pulley chamber 31 to rotate around the shaft, and adjust the angle between it and the first pulley chamber 21 to a suitable angle within the range of 0-60°; then start the fourth hydraulic rod 33 to drive the corner connecting part 41 to rotate around the shaft, and adjust the angle between it and the second pulley chamber 31 to a suitable angle within the range of 0-90°, so that the conveyor belt 5 is adapted to the pit transfer angle.

[0048] In step S4, the two sets of fifth hydraulic rods 44 are activated to extend synchronously, pushing the sliding roller shaft 43 to slide parallel within the third pulley compartment 42, supporting the conveyor belt 5 to make it fully taut, eliminating belt slack, and ensuring that the material does not slip or fall off during conveying.

[0049] Step S5: The material to be transferred is put into the hopper 45 and the material is evenly distributed on the surface of the conveyor belt 5 through the hopper 45; the drive roller 25 is started to drive the conveyor belt 5 to rotate in a cycle, and the baffle plate 51 on the surface of the belt moves with the belt, continuously lifting the material from the pit upward and laterally conveying it to the designated unloading position outside the pit.

[0050] The above are merely preferred embodiments of the present invention and are illustrative in nature, not restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A material transfer device for long and deep foundation pits, characterized in that, It includes a walking assembly (1), a first pulley assembly (2), a second pulley assembly (3), a third pulley assembly (4), and a conveyor belt (5); The first pulley assembly (2) is mounted on the top of the walking assembly (1) via a rotating shaft. The second pulley assembly (3) is located inside the first pulley assembly (2). The third pulley assembly (4) is located at the bottom of the second pulley assembly (3). The conveyor belt (5) is sleeved on the outside of the first pulley assembly (2), the second pulley assembly (3), and the third pulley assembly (4).

2. The material transfer equipment for long and deep foundation pits as described in claim 1, characterized in that, The walking assembly (1) includes a tracked walking part (11), a set of rotating movable parts (12) is installed on the top of the tracked walking part (11), a set of movable brackets (13) is installed on one side of the rotating movable part (12) via a rotating shaft, and two sets of first hydraulic rods (14) are installed on the other side of the rotating movable part (12) via a rotating shaft. The extended end of the first hydraulic rods (14) is connected to the middle of the movable brackets (13).

3. A material transfer device for long and deep foundation pits as described in claim 2, characterized in that, The first pulley assembly (2) includes a first pulley compartment (21). The second pulley assembly (3) is mounted on the bottom of the first pulley compartment (21) via a rotating shaft. A set of embedded sliding rods (22) are installed in the middle of the side wall of the first pulley compartment (21). The first pulley compartment (21) is engaged inside the movable bracket (13) via the embedded sliding rods (22). A set of second hydraulic rods (23) is mounted on the top of the first pulley compartment (21) via a rotating shaft. The bottom end of the second hydraulic rods (23) is connected to the middle of the outer wall of the movable bracket (13). Two sets of third hydraulic rods (24) are mounted on the lower end of the first pulley compartment (21) via a rotating shaft. The protruding end of the third hydraulic rods (24) is connected to the second pulley assembly (3). A set of drive rollers (25) is installed inside the top of the first pulley compartment (21).

4. A material transfer device for long and deep foundation pits as described in claim 3, characterized in that, The second pulley assembly (3) includes a second pulley compartment (31). The top of the second pulley compartment (31) is mounted to the bottom of the first pulley compartment (21) via a pivot. A third pulley assembly (4) is mounted to the bottom of the second pulley compartment (31) via a pivot. A support part (32) is mounted in the middle of the side wall of the second pulley compartment (31). The upper part of the support part (32) is connected to the protruding end of the third hydraulic rod (24) via a pivot. A fourth hydraulic rod (33) is mounted to the lower part of the support part (32) via a pivot.

5. A material transfer device for long and deep foundation pits as described in claim 4, characterized in that, The third pulley assembly (4) includes a corner connecting part (41). The top end of the corner connecting part (41) is installed at the bottom end of the second pulley chamber (31) via a rotating shaft. The extended end of the fourth hydraulic rod (33) is connected to the upper part of the corner connecting part (41) via a rotating shaft. A set of third pulley chambers (42) is installed inside the corner connecting part (41). A set of sliding rollers (43) that can slide parallel to the third pulley chamber (42) are provided in a section inside the third pulley chamber (42). Two sets of fifth hydraulic rods (44) are installed in the middle of the corner connecting part (41) via a rotating shaft. The extended ends of the two sets of fifth hydraulic rods (44) are respectively connected to the two ends of the sliding rollers (43). The sliding rollers (43) are pushed by the fifth hydraulic rods (44). A hopper (45) is provided on the top of the third pulley chamber (42).

6. A material transfer device for long and deep foundation pits as described in claim 1 or 5, characterized in that, The conveyor belt (5) is located between the first pulley compartment (21), the second pulley compartment (31) and the corner connection part (41). The drive roller (25) drives the conveyor belt (5). Several sets of baffles (51) are evenly spaced on the surface of the conveyor belt (5). The baffles (51) are used to lift materials.

7. A material transfer device for long and deep foundation pits as described in claim 6, characterized in that, The first pulley compartment (21) is "L" shaped. The vertical part of the first pulley compartment (21) is provided inside the movable bracket (13), and the drive roller shaft (25) is provided in the horizontal part of the first pulley compartment (21).

8. A material transfer device for long and deep foundation pits as described in claim 4, characterized in that, The vertical length of the first pulley compartment (21) is the same as the length of the movable bracket (13), and the movable distance of the extended end of the second hydraulic rod (23) is less than the vertical length of the first pulley compartment (21).

9. A material transfer device for long and deep foundation pits as described in claim 5, characterized in that, The adjustable angle range of the first pulley compartment (21) relative to the rotating movable part (12) is 0-90°, the adjustable angle range of the second pulley compartment (31) relative to the first pulley compartment (21) is 0-60°, and the adjustable angle range of the corner connecting part (41) relative to the second pulley compartment (31) is 0-90°.

10. A method of using a material transfer device for a long, deep foundation pit as described in any one of claims 1-9, characterized in that, Includes the following steps: Step S1: Start the tracked walking part (11) of the walking assembly (1) and move the whole machine to the designated position in the long and deep foundation pit operation area; control the rotating movable part (12) to turn to the direction of the foundation pit, control the first hydraulic rod (14) to extend, push the movable support (13) to rotate around the rotating shaft to the vertical state, and complete the initial positioning of the equipment's working posture. Step S2: Activate the second hydraulic rod (23) to retract it, which drives the first pulley chamber (21) to move vertically downward along the movable bracket (13) through the embedded slide rod (22), and simultaneously drives the second pulley assembly (3) and the third pulley assembly (4) to move downward; after the third pulley assembly (4) reaches the working height in the pit, lock the second hydraulic rod (23) to complete the height positioning of the conveying mechanism. Step S3: Control the extension and retraction of the third hydraulic rod (24) to pull the second pulley chamber (31) to rotate around the shaft and adjust the angle between it and the first pulley chamber (21) to a suitable angle within the range of 0-60°; then start the fourth hydraulic rod (33) to drive the corner connecting part (41) to rotate around the shaft and adjust the angle between it and the second pulley chamber (31) to a suitable angle within the range of 0-90° so that the conveyor belt (5) is adapted to the pit transfer angle. Step S4: Start the two sets of fifth hydraulic rods (44) to extend synchronously, push the sliding roller shaft (43) to slide parallel in the third pulley compartment (42), support the conveyor belt (5) to make it fully taut, eliminate belt slack, and ensure that the material does not slip or fall off during conveying. Step S5: The material to be transferred is put into the hopper (45). The material is evenly distributed on the surface of the conveyor belt (5) through the hopper (45). The drive roller (25) is started to drive the conveyor belt (5) to rotate in a cycle. The baffle plate (51) on the surface of the belt moves with the belt, continuously lifting the material from the pit and laterally conveying it to the designated unloading position outside the pit.

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