A full-continuous topsoil stripping and transporting system for open-pit coal mines

Abstract

The application discloses an open-pit coal mine full-continuous topsoil stripping and transporting system, which comprises topsoil stripping devices, topsoil transporting devices and dumping devices which are sequentially and connected along the mining length of a coal seam working face; the topsoil stripping device comprises a stripping telescopic belt, the topsoil transporting device comprises a transporting belt, and the dumping device comprises a dumping telescopic belt; the stripping telescopic belt, the transporting belt and the dumping telescopic belt are connected; the front end of the stripping telescopic belt is provided with first stripping devices and second stripping devices which are symmetrically arranged and have the same structure; the first stripping device comprises a bucket wheel coal digging mechanism and a belt rack which is arranged in the bucket wheel coal digging mechanism; a conveying belt is movably arranged on the belt rack; stripping materials which are put on the conveying belt through the bucket wheel coal digging mechanism are sequentially transported to an internal dumping site through the stripping telescopic belt, the transporting belt and the dumping telescopic belt. The system realizes full-continuous coal mining of the open-pit coal mine and has the advantages of high production efficiency and low mining cost.

Description

Technical Field

[0001] This invention relates to the field of large-scale open-pit coal mining, specifically to a fully continuous topsoil stripping and transfer system for open-pit coal mines. Background Technology

[0002] Open-pit mining is characterized by large-scale production, high labor productivity, high resource recovery rate, and good production safety and occupational health and safety conditions. It has become the preferred choice for coal resource extraction. However, its development is limited by factors such as large topsoil stripping volume, long transportation distances, and high costs. Existing open-pit coal mine topsoil stripping and transfer processes mainly include two types: the first is the intermittent process of excavators and trucks, which has the drawbacks of: topsoil transfer costs accounting for 60%-70% of the mining cost, high transportation costs, low construction efficiency, and a large number of drivers; the second is the process of bucket wheel excavators + belt conveyors + dump trucks, which has the drawbacks of: high equipment costs, complex process systems, difficulty in matching various equipment types, and low adaptability to small-scale open-pit coal mining. Summary of the Invention

[0003] In view of the shortcomings of existing mining equipment and mining technology, the purpose of this invention is to provide a fully continuous topsoil stripping and transportation system for open-pit coal mines, so as to solve the technical problems of high cost and low construction efficiency of topsoil stripping and transportation in existing technologies.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A fully continuous topsoil stripping and transfer system for open-pit coal mines includes a topsoil stripping device, a topsoil transfer device, and a soil discharge device that are sequentially connected along the mining length of the coal seam working face.

[0006] The topsoil stripping device includes a stripping telescopic belt for transporting the stripped material, the topsoil transfer device includes a transfer belt for receiving and conveying the stripped material, and the soil discharge device includes a soil discharge telescopic belt for receiving and discharging the stripped material; the stripping telescopic belt, the transfer belt, and the soil discharge telescopic belt are connected together.

[0007] The front ends of the stripping telescopic belt are provided with a first stripping device and a second stripping device. The first stripping device and the second stripping device have the same structure and are arranged in a mirror image symmetrically. The first stripping device includes a bucket wheel mining mechanism and a belt conveyor frame passing through the bucket wheel mining mechanism. A conveyor belt is movably arranged on the belt conveyor frame. The stripped material that is put onto the conveyor belt by the bucket wheel mining mechanism is transported to the inner spoil disposal site in sequence via the stripping telescopic belt, the transfer belt and the spoil disposal telescopic belt.

[0008] The present invention also has the following technical features:

[0009] Specifically, the bucket wheel coal mining mechanism includes a bucket wheel disc and a turntable rotatably mounted outside the bucket wheel disc. The bucket wheel disc has a first discharge port located directly above the conveyor belt. Multiple second discharge ports are evenly spaced along the circumference on the outer wall of the turntable, and each second discharge port is connected to a bottomless bucket. The bucket wheel disc is also equipped with a turntable drive motor for driving the turntable to rotate.

[0010] The belt conveyor frame is provided with slide rails and ball screw pairs on both the left and right sides. The bucket wheel disc is provided with a first mounting hole for the slide rail to pass through and a second mounting hole for the ball screw pair to pass through.

[0011] The belt conveyor frame is also equipped with a lead screw motor, and the ball screw pair can drive the bucket wheel coal mining mechanism to move along the length of the slide rail under the drive of the lead screw motor.

[0012] Furthermore, both the first and second stripping devices are connected to the stripping telescopic belt via a first angle adjustment mechanism. The first angle adjustment mechanism includes a hydraulic cylinder mounting base, on which a stripping telescopic belt mounting plate and a belt conveyor frame mounting plate are connected. The hydraulic cylinder mounting base and the stripping telescopic belt mounting plate are also connected via a swing cylinder, and the hydraulic cylinder mounting base and the belt conveyor frame mounting plate are also connected via a pitch cylinder.

[0013] Furthermore, the unloading end of the conveyor belt is located above the loading end of the stripping telescopic belt.

[0014] Furthermore, a soil discharge unit is provided below the unloading end of the soil discharge telescopic belt. The soil discharge unit includes a top-open collection pool, and a left soil discharge belt and a right soil discharge belt are movably arranged below the collection pool.

[0015] The collection pool is equipped with a left spiral soil discharge arm and a right spiral soil discharge arm; a left hydraulic motor is connected to the left spiral soil discharge arm, and a right hydraulic motor is connected to the right spiral soil discharge arm; the bottom of the collection pool is also provided with a left discharge port for unloading material to the left soil discharge belt and a right discharge port for unloading material to the right soil discharge belt.

[0016] Furthermore, the ball screw assembly includes a ball screw, which is connected to a ball nut via steel balls; one end of the ball screw is connected to a screw motor.

[0017] Furthermore, the soil discharge telescopic belt is installed on the soil discharge telescopic bracket, and the soil discharge telescopic bracket is connected to the soil discharge unit through the second angle adjustment mechanism. The second angle adjustment mechanism includes a mounting bracket, one end of which is connected to the soil discharge telescopic bracket, and the other end is connected to the left soil discharge belt through the first connecting unit and the right soil discharge belt through the second connecting unit.

[0018] The mounting bracket is also connected to the first connecting unit via a first telescopic rod, and to the second connecting unit via a second telescopic rod.

[0019] Furthermore, the first connecting unit includes a left cross-shaped universal coupling, one end of which is connected to a mounting bracket, and the other end is connected to a left belt mounting seat. The left belt mounting seat is connected to the mounting bracket via the first telescopic rod.

[0020] The second connecting unit includes a right cross-shaped universal coupling, one end of which is connected to a mounting bracket, and the other end is connected to a right belt mounting seat. The right belt mounting seat is connected to the mounting bracket via the second telescopic rod.

[0021] Furthermore, the two opposite sides of the feeding end of the peeling telescopic belt are provided with first feeding baffles, which together with the peeling telescopic belt form a groove-shaped structure.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) The system of the present invention, through the connection of the topsoil stripping device, the topsoil transfer device, and the soil discharge device, can directly discharge the stripped material generated by the topsoil stripping device to the internal spoil disposal site of the open-pit coal mine. It solves the problems of high transportation costs and low construction efficiency of existing methods, realizes fully continuous coal mining in open-pit coal mines, and has the advantages of high production efficiency, low mining costs, fewer construction personnel, and high level of intelligence, thus ensuring the safety of open-pit coal mine mining and construction.

[0024] (2) The soil dumping device of the present invention is set in the inner soil dumping site, which can reduce the impact of transport vehicles entering and leaving the construction site on other operations, especially on coal mining production. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0026] Figure 2 This is a schematic diagram of a topsoil transfer device;

[0027] Figure 3 This is a schematic diagram of the topsoil stripping device.

[0028] Figure 4 This is a side view of the bucket wheel coal mining mechanism.

[0029] Figure 5 This is a schematic diagram of the first angle-adjusting mechanism;

[0030] Figure 6 This is a schematic diagram of the soil removal device.

[0031] Figure 7 This is a schematic diagram of the material collection tank structure;

[0032] Figure 8 This is a schematic diagram of the second angle adjustment mechanism;

[0033] Figure 9 This is a partial structural diagram of the first stripping device.

[0034] The symbols in the attached diagram have the following meanings:

[0035] 1-Topsoil stripping device, 2-Topsoil transfer device, 3-Soil discharge device, 4-Internal soil discharge area;

[0036] 11- Peeling telescopic belt, 12- First peeling device, 13- Second peeling device, 14- First angle adjustment mechanism;

[0037] 21-Transfer belt, 22-Stripping and transfer frame, 23-Electrical control system, 24-Hydraulic system;

[0038] 31-Soil discharge telescopic belt, 32-Soil discharge unit, 33-Soil discharge telescopic bracket, 34-Second angle adjustment mechanism;

[0039] 111 - First baffle plate;

[0040] 121- Bucket wheel coal mining mechanism, 122- Belt conveyor frame, 123- Conveyor belt, 124- Slide rail, 125- Ball screw pair, 126- Screw motor;

[0041] 141-Hydraulic cylinder mounting base, 142-Stripping telescopic belt mounting plate, 143-Belt conveyor frame mounting plate, 144-Swing cylinder, 145-Pitch cylinder;

[0042] 321 - Aggregate pit, 322 - Left soil discharge belt, 323 - Right soil discharge belt, 324 - Left spiral soil discharge arm, 325 - Right spiral soil discharge arm, 326 - Left hydraulic motor, 327 - Right hydraulic motor;

[0043] 341-Mounting bracket, 342-First connecting unit, 343-Second connecting unit;

[0044] 1211-Bucket wheel, 1212-Turntable, 1213-Bottomless bucket, 1214-Drive motor;

[0045] 1251 - Ball screw, 1252 - Ball nut;

[0046] 3421-Left cross-shaft universal coupling, 3422-Left belt mounting seat, 3423-First telescopic rod;

[0047] 3431-Right cross-shaft universal coupling; 3432-Right belt mounting seat; 3433-Second telescopic rod;

[0048] 12111 - First mounting hole, 12112 - Second mounting hole. Specific implementation methods

[0049] Following the above technical solutions, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0050] The terms “upper,” “lower,” “front,” “rear,” “left,” “right,” etc., used in this invention to indicate orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. Example

[0052] like Figure 1 As shown, in this embodiment, the open-pit coal mine to be mined includes a topsoil layer to be stripped, a coal seam to be mined below the topsoil layer, and an inner spoil heap 4 located directly opposite the topsoil layer. The stripped soil taken from the topsoil layer needs to be transported to the inner spoil heap 4 via a topsoil transfer device 2 (e.g., a stripping transfer machine) to realize the topsoil stripping operation in the open-pit coal mine.

[0053] This embodiment provides a fully continuous topsoil stripping and transfer system for open-pit coal mines, comprising a topsoil stripping device 1, a topsoil transfer device 2, and a soil discharge device 3 connected sequentially along the mining length of the coal seam working face. The soil discharge device 3 is located at the inner soil discharge site and is mainly used to discharge the stripped material from the open-pit coal mine surface overburden conveyed by the topsoil transfer device 2 to the inner soil discharge site. In this embodiment, the soil discharge device 3 and the topsoil transfer device 2 are connected in a drawer-type overlapping manner, and the transport distance of the stripped material is adjusted by means of telescopic hydraulic cylinders connected to the soil discharge device 3 and the topsoil transfer device 2 respectively, thereby achieving the adjustment of the stripping and transfer construction distance.

[0054] like Figure 2As shown, the topsoil stripping device 1 includes a stripping telescopic belt 11 for transporting the stripped material, the topsoil transfer device 2 includes a transfer belt 21 for receiving and transferring the stripped material, and the soil discharge device 3 includes a soil discharge telescopic belt 31 for receiving and discharging the stripped material. The stripping telescopic belt 11, the transfer belt 21, and the soil discharge telescopic belt 31 are connected together. The transfer belt 21 is mounted on the stripping and transfer frame 22 and is driven to rotate by a belt drum mounted on the stripping and transfer frame 22. An electrical control system 23 is also installed on the stripping and transfer frame 22. The electrical control system 23 is mainly used to control the topsoil stripping and transfer system, including controlling the pitch and swing angle adjustments of the topsoil stripping device 1, as well as the operation of the topsoil transfer device 2 and the soil discharge device 3. A counterweight mechanism for balancing the stability of the entire machine and a hydraulic system 24 for providing power to the stripping telescopic belt 11, the transfer belt 21, and the soil discharge telescopic belt 31 are also installed on the stripping and transfer frame 22.

[0055] like Figure 3 As shown, a first stripping device 12 and a second stripping device 13 are provided on both sides of the front end of the stripping telescopic belt 11. The first stripping device 12 and the second stripping device 13 have the same structure and are arranged in a mirror image symmetrical arrangement. The first stripping device 12 includes a bucket wheel mining mechanism 121 and a belt conveyor frame 122 passing through the bucket wheel mining mechanism 121. A conveyor belt 123 is movably arranged on the belt conveyor frame 122. The stripped material, which is put onto the conveyor belt 123 by the bucket wheel mining mechanism 121, is transported sequentially to the inner spoil heap via the stripping telescopic belt 11, the transfer belt 21, and the spoil discharge telescopic belt 31. In order to adjust the transfer length, in this embodiment, the lengths of the stripping telescopic belt 11, the transfer belt 21, and the spoil discharge telescopic belt 31 can be adjusted according to the actual working conditions. For example, the length of the support can be adjusted by setting telescopic cylinders on each support used to support the stripping telescopic belt 11, the transfer belt 21, and the spoil discharge telescopic belt 31, thereby realizing the adjustment of the lengths of the stripping telescopic belt 11, the transfer belt 21, and the spoil discharge telescopic belt 31.

[0056] like Figure 4 and Figure 9As shown, in a preferred embodiment, the bucket wheel coal mining mechanism 121 includes a bucket wheel disk 1211 and a turntable 1212 rotatably mounted on the bucket wheel disk 1211. The bucket wheel disk 1211 has a first discharge port located directly above the conveyor belt 123. Multiple second discharge ports are evenly spaced along the circumference on the outer wall of the turntable 1212. Each second discharge port is connected to a bottomless bucket 1213, and the bottomless bucket 1213 also has a bucket inlet. The bucket wheel disk 1211 is also equipped with a turntable drive motor 1214 for driving the turntable 1212 to rotate. The bottomless buckets 1213 are evenly spaced and installed on the turntable 1212 in the same direction to form a fully continuous operation during excavation. A baffle can be installed at the bottom of the first discharge port to prevent the falling stripping material from splashing.

[0057] When the turntable 1212 rotates relative to the bucket wheel 1211, the first discharge port and the second discharge port can be connected. The stripped material that enters the bottomless bucket 1213 through the feed port can fall onto the conveyor belt 123 through the first discharge port and the second discharge port.

[0058] The left and right sides of the belt conveyor frame 122 are provided with slide rails 124 and ball screw pairs 125. The bucket wheel disc 1211 is provided with a first mounting hole 12111 for the slide rails 124 to pass through, and a second mounting hole 12112 for the ball screw pairs 125 to pass through. The bucket wheel coal mining mechanism 121 is mounted on the belt conveyor frame 122 by means of the slide rails 124 and the ball screw pairs 125.

[0059] The belt conveyor frame 122 is also equipped with a screw motor 126, and the ball screw pair 125 can drive the bucket wheel coal mining mechanism 121 to move along the length direction of the slide rail 124 under the drive of the screw motor 126.

[0060] like Figure 5 As shown, in a preferred embodiment, both the first peeling device 12 and the second peeling device 13 are connected to the peeling telescopic belt 11 via a first angle adjustment mechanism 14. The first angle adjustment mechanism 14 includes a cylinder mounting base 141, on which a peeling telescopic belt mounting plate 142 and a belt conveyor frame mounting plate 143 are connected. The cylinder mounting base 141 is rotatably connected to the peeling telescopic belt mounting plate 142. The cylinder mounting base 141 and the peeling telescopic belt mounting plate 142 are also connected via a swing cylinder 144, and the cylinder mounting base 141 and the belt conveyor frame mounting plate 143 are also connected via a pitch cylinder 145.

[0061] The hydraulic cylinder mounting base 141 can swing up and down and swing left and right under the drive of the swing cylinder 144 and the pitch cylinder 145, thereby increasing the range of excavation operations.

[0062] As a preferred embodiment, the unloading end of the conveyor belt 123 is located above the loading end of the stripping telescopic belt 11.

[0063] As a preferred embodiment of this invention, such as Figure 6 As shown, a soil discharge unit 32 is provided below the unloading end of the soil discharge telescopic belt 31. The soil discharge unit 32 includes a top-open collection pool 321. A left soil discharge belt 322 and a right soil discharge belt 323 are movably arranged below the collection pool 321. The collection pool 321 is used to collect the topsoil transported by the soil discharge telescopic belt 31 and then put it onto the left soil discharge belt 322 and the right soil discharge belt 323.

[0064] like Figure 8 As shown, a left spiral soil discharge arm 324 and a right spiral soil discharge arm 325 are installed inside the collection pool 321; a left hydraulic motor 326 is connected to the left spiral soil discharge arm 324, and a right hydraulic motor 327 is connected to the right spiral soil discharge arm 325; the bottom of the collection pool 321 is also provided with a left discharge port for discharging material to the left soil discharge belt 322, and a right discharge port for discharging material to the right soil discharge belt 323.

[0065] The operation of the left spiral soil discharge arm 324 and the right spiral soil discharge arm 325 can be controlled by the left hydraulic motor 326 and the right hydraulic motor 327 respectively. When it is necessary to unload material onto the left soil discharge belt 322, the right hydraulic motor 327 can be turned off. At this time, the stripped material entering the collection pool 321 will be sent into the left discharge port by the left spiral soil discharge arm 324 and fall onto the left soil discharge belt 322, thereby realizing the distribution of stripped material to the left soil discharge belt 322, the right soil discharge belt 323, or the left soil discharge belt 11 and the right soil discharge belt 12 according to the soil discharge needs.

[0066] As a preferred embodiment, the ball screw assembly 125 includes a ball screw 1251, which is connected to a ball nut 1252 via steel balls; one end of the ball screw 1251 is connected to a screw motor 126.

[0067] In a preferred embodiment, the soil-discharging telescopic belt 31 is mounted on the soil-discharging telescopic support 33, which is connected to the soil-discharging unit 32 via a second angle-adjusting mechanism 34. Figure 8 As shown, the second angle adjustment mechanism 34 includes a mounting bracket 341. One end of the mounting bracket 341 is connected to the soil discharge telescopic bracket 33, and the other end is connected to the left soil discharge belt 322 via the first connecting unit 342 and to the right soil discharge belt 323 via the second connecting unit 343. The soil discharge telescopic bracket 33 can move under the action of the second angle adjustment mechanism 34, ultimately realizing the angle change between the left soil discharge belt 322 and the right soil discharge belt 323.

[0068] As a preferred embodiment, the first connecting unit 342 includes a left cross-shaped universal coupling 3421 and a left belt mounting seat 3422 connected together. One end of the left cross-shaped universal coupling 3421 is connected to the mounting bracket 341, and the other end is connected to the left belt mounting seat 3422. The left belt mounting seat 3422 is also connected to the mounting bracket 341 through a first telescopic rod 3423.

[0069] The second connecting unit 343 includes a right cross-shaped universal coupling 3431 and a right belt mounting seat 3432 connected together. One end of the right cross-shaped universal coupling 3431 is connected to the mounting bracket 341, and the other end is connected to the right belt mounting seat 3432. The right belt mounting seat 3432 is also connected to the mounting bracket 341 through a second telescopic rod 3433.

[0070] As a preferred embodiment, the two opposite sides of the feeding end of the peeling telescopic belt 11 are provided with first feeding baffles, and the first feeding baffles and the peeling telescopic belt 11 together form a groove structure.

[0071] In operation, this system is first deployed on the stripping step of the lowest horizontal coal seam roof in a deep-drainage open-pit coal mine. This fully continuous open-pit coal mine topsoil stripping and transfer system consists of a topsoil stripping device, a topsoil transfer device, and a soil discharge device. Then, during stripping operations, the topsoil stripping device is activated via an electrical control system. The bucket wheel digging mechanism 121 reciprocates along the length of the conveyor belt, achieving the stripping of the soil layer to be stripped. As the turntable 1212 rotates, when the first and second discharge ports connect, the material enters the bottomless bucket 121 through the feed inlet. The stripped material inside the 3-hole falls onto the conveyor belt 123 through the first and second discharge ports, and is then sent by the conveyor belt 123 to the transfer belt 21, and then transferred to the soil discharge telescopic belt 31. After the stripped material on the soil discharge telescopic belt 31 enters the collection pool 321, it falls onto the left soil discharge belt 322 or the right soil discharge belt 323 as needed. The stripped material is finally directly discharged into the inner soil discharge yard of the open-pit coal mine. During the soil discharge process, the position of the left soil discharge belt 322 or the right soil discharge belt 323 can be adjusted by the second angle adjustment mechanism 14 to expand the soil discharge range.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fully continuous topsoil stripping and transfer system for open-pit coal mines, characterized in that, It includes a topsoil stripping device (1), a topsoil transfer device (2), and a soil discharge device (3) that are sequentially connected along the mining length of the coal seam working face; The topsoil stripping device (1) includes a stripping telescopic belt (11) for transporting the stripped material, the topsoil transfer device (2) includes a transfer belt (21) for receiving and transferring the stripped material, and the soil discharge device (3) includes a soil discharge telescopic belt (31) for receiving and discharging the stripped material; the stripping telescopic belt (11), the transfer belt (21) and the soil discharge telescopic belt (31) are connected and arranged. The front ends of the stripping telescopic belt (11) are provided with a first stripping device (12) and a second stripping device (13). The first stripping device (12) and the second stripping device (13) have the same structure and are arranged in a mirror symmetrical manner. The first stripping device (12) includes a bucket wheel mining mechanism (121) and a belt conveyor frame (122) passing through the bucket wheel mining mechanism (121). A conveyor belt (123) is movably arranged on the belt conveyor frame (122). The stripped material that is thrown onto the conveyor belt (123) by the bucket wheel mining mechanism (121) is transported to the inner spoil disposal site in sequence via the stripping telescopic belt (11), the transfer belt (21) and the spoil disposal telescopic belt (31). The bucket wheel coal mining mechanism (121) includes a bucket wheel disc (1211) and a turntable (1212) rotatably mounted outside the bucket wheel disc (1211). The bucket wheel disc (1211) has a first discharge port located directly above the conveyor belt (123). Multiple second discharge ports are evenly spaced along the circumference on the outer wall of the turntable (1212), and each second discharge port is connected to a bottomless bucket (1213). The bucket wheel disc (1211) is also equipped with a turntable drive motor (1214) for driving the turntable (1212) to rotate. The belt conveyor frame (122) is provided with slide rails (124) and ball screw pairs (125) on both the left and right sides. The bucket wheel disc (1211) is provided with a first mounting hole (12111) for the slide rail (124) to pass through, and a second mounting hole (12112) for the ball screw pair (125) to pass through. The belt conveyor frame (122) is also equipped with a screw motor (126), and the ball screw pair (125) can drive the bucket wheel coal mining mechanism (121) to move along the length direction of the slide rail (124) under the drive of the screw motor (126); The first stripping device (12) and the second stripping device (13) are both connected to the stripping telescopic belt (11) through the first angle adjustment mechanism (14). The first angle adjustment mechanism (14) includes a cylinder mounting base (141). The cylinder mounting base (141) is connected to the stripping telescopic belt mounting plate (142) and the belt frame mounting plate (143). The cylinder mounting base (141) and the stripping telescopic belt mounting plate (142) are also connected through an angle-swinging cylinder (144). The cylinder mounting base (141) and the belt frame mounting plate (143) are also connected through a pitch cylinder (145).

2. The open-pit coal mine continuous topsoil stripping and transfer system as described in claim 1, characterized in that, The unloading end of the conveyor belt (123) is located above the loading end of the stripping telescopic belt (11).

3. The open-pit coal mine continuous topsoil stripping and transfer system as described in claim 1, characterized in that, A soil discharge unit (32) is provided below the unloading end of the soil discharge telescopic belt (31). The soil discharge unit (32) includes a top-open collection pool (321). A left soil discharge belt (322) and a right soil discharge belt (323) are movably arranged below the collection pool (321). The collection pool (321) is equipped with a left spiral soil discharge arm (324) and a right spiral soil discharge arm (325); a left hydraulic motor (326) is connected to the left spiral soil discharge arm (324), and a right hydraulic motor (327) is connected to the right spiral soil discharge arm (325); the bottom of the collection pool (321) is also provided with a left discharge port for discharging material to the left soil discharge belt (322) and a right discharge port for discharging material to the right soil discharge belt (323).

4. The open-pit coal mine continuous topsoil stripping and transfer system as described in claim 1, characterized in that, The ball screw assembly (125) includes a ball screw (1251), which is connected to a ball nut (1252) via steel balls; one end of the ball screw (1251) is connected to the screw motor (126).

5. The open-pit coal mine continuous topsoil stripping and transfer system as described in claim 1, characterized in that, The soil discharge telescopic belt (31) is installed on the soil discharge telescopic support (33). The soil discharge telescopic support (33) is connected to the soil discharge unit (32) through the second angle adjustment mechanism (34). The second angle adjustment mechanism (34) includes a mounting bracket (341). One end of the mounting bracket (341) is connected to the soil discharge telescopic support (33), and the other end is connected to the left soil discharge belt (322) through the first connecting unit (342) and to the right soil discharge belt (323) through the second connecting unit (343).

6. The open-pit coal mine continuous topsoil stripping and transfer system as described in claim 5, characterized in that, The first connecting unit (342) includes a left cross-shaped universal coupling (3421) and a left belt mounting seat (3422) connected together. One end of the left cross-shaped universal coupling (3421) is connected to the mounting bracket (341), and the other end is connected to the left belt mounting seat (3422). The left belt mounting seat (3422) is also connected to the mounting bracket (341) through a first telescopic rod (3423). The second connecting unit (343) includes a right cross-shaped universal coupling (3431) and a right belt mounting seat (3432) connected together. One end of the right cross-shaped universal coupling (3431) is connected to the mounting bracket (341), and the other end is connected to the right belt mounting seat (3432). The right belt mounting seat (3432) is also connected to the mounting bracket (341) through a second telescopic rod (3433).

7. The open-pit coal mine continuous topsoil stripping and transfer system as described in claim 1, characterized in that, The peeling telescopic belt (11) has a first feeding baffle on each side opposite to the feeding end. The first feeding baffle and the peeling telescopic belt (11) together form a groove structure.

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