Large-inclination track mine car single-line hoisting and conveying system and conveying method

Abstract

The present application is a large-dip-angle track mine car single-line hoisting and conveying system and conveying method for open-pit mines, belonging to the field of ore transportation, aiming to quickly, efficiently and safely transport ores. It comprises a winding drum device, a steel wire rope, a track beam and a mine car. The winding drum device is used to rotate and wind the steel wire rope to pull the mine car along the track erected from the pit to the top of the mine to realize ore transportation, realizing the rapid, safe and low-cost hoisting and conveying of ores, solving the problems of long transportation distance, high climbing, low transportation efficiency, poor economy, and the exponential growth of consumables such as spare parts, fuel, tires, etc., resulting in a significant increase in costs and serious environmental pollution. Through this method of "ore elevator", the rapid, safe and efficient transportation of ores is ensured, the transportation distance is effectively shortened, the cost of ore transportation is greatly reduced, and carbon emissions are reduced, realizing the safe, green, high-quality and intelligent development of mines.

Description

Technical Field

[0001] This invention belongs to the field of ore transportation technology, specifically a single-line hoisting and conveying system and method for open-pit mine steep-angle track mine cars. Background Technology

[0002] Currently, the transportation of ore in open-pit mines both domestically and internationally typically employs three modes: mine truck transport, belt conveyor transport, and rail transport, or a combination of these three methods. Each of these modes has its own characteristics: belt conveyors offer advantages such as continuous transport, large transport capacity, and high efficiency, but also have high operating costs and a high failure rate, and require a small conveying inclination angle (≤15 degrees, generally not exceeding ≤13 degrees); rail transport features large transport capacity and high efficiency, but has higher construction and maintenance costs, and requires a small conveying inclination angle (maximum gradient not exceeding 2.5%, ≤1.5 degrees), and is usually located at the top of the mine, forming a combined transport system with mine trucks or belt conveyors; mine truck transport offers advantages such as high flexibility and adaptability, but also has high costs and poses safety hazards and environmental pollution problems, making it the primary transportation method in open-pit mines.

[0003] As open-pit mining deepens, belt conveyors and rail transport, limited by their inclination angles, can no longer meet the requirements for conveying at steep inclines. Currently, electric shovels are primarily used for excavation and loading, followed by mining trucks for transport. However, the deeper the open-pit mining, the longer the ore transport distance, the steeper the slope, the longer the ramp, and the greater the climbing height. Mining trucks transporting fully loaded ore from the bottom of the mine along the mine roadway to the crushing station or stockpile at the top of the mine result in a round trip distance far exceeding the economical transport distance. This not only leads to low transport efficiency but also significantly increases the cost of consumables such as spare parts, fuel, and tires, severely hindering the green, high-quality, and intelligent development of mines and impacting the widespread application of electric mining trucks in mines. Summary of the Invention

[0004] The purpose of this invention is to address the drawbacks of electric shovel excavation and loading and mining truck transportation methods, and to provide a single-line hoisting and conveying system and method for large-angle track mining cars in open-pit mines. This system enables fast, efficient and safe transportation of ore, significantly reduces ore transportation costs and carbon emissions, and achieves green, high-quality and intelligent development of mines.

[0005] The technical solution adopted in this invention is: a single-line hoisting and conveying system for mine cars with steep inclines in open-pit mines, including a hoisting and conveying line, a main drive system, and a slow drive system; the hoisting and conveying line includes a drum device, a wire rope, a track beam, and a mine car. There are two sets of track beams, symmetrically erected on both sides of the center line of the hoisting and conveying line, with each set extending inclinedly upwards from the bottom of the mine pit to the top; each set of track beams is equipped with a track; the mine car is movably mounted on the track along the extension direction of the track beam. The drum device includes a left drum and a right drum, connected in series via a drum coupling to form a double drum; the spiral grooves on the left and right drums rotate in opposite directions. The wire rope is positioned between the drum device and the mine car. The main drive system is connected to the drum device, driving it to rotate, causing the wire rope to wind around the left and right drums, pulling the mine car along the track.

[0006] Furthermore, two sets of movable pulley blocks are installed on both sides of the mine car; after the mine car is installed on the track, the two sets of movable pulley blocks are symmetrical to the center line of the hoisting and conveying line. Two sets of balancing pulley blocks are installed diagonally above the top of the track beam, symmetrical to the center line of the hoisting and conveying line. Two sets of redirecting pulley blocks are installed between the top of the track beam and the drum device, symmetrical to the center line of the hoisting and conveying line. A tensioning pulley block is installed between the two sets of balancing pulley blocks. One end of the wire rope is fixed to the left drum, and the other end extends downward along the track direction after passing through the left-side redirecting pulley block to the left-side movable pulley block of the mine car. After passing through the left-side movable pulley block of the mine car, it extends upward along the track direction to the left-side balance pulley block. Then, it passes through the left-side balance pulley block, tension pulley block, and right-side balance pulley block in sequence, and extends downward along the track direction to the right-side movable pulley block of the mine car. After passing through the right-side movable pulley block of the mine car, it extends upward along the track direction to the right-side redirecting pulley block, and then extends to the right drum after passing through the right-side redirecting pulley block and is fixed to the right drum, thus forming a wire rope winding system.

[0007] Furthermore, when the wire rope winding system ratio is 2, there is no need to install a fixed pulley group at the top of the mine; when the wire rope winding system ratio is greater than 2, two fixed pulley groups are symmetrically installed at the top of the mine.

[0008] Furthermore, a left drum disc brake is installed at the end of the left drum; a right drum disc brake is installed at the end of the right drum.

[0009] Furthermore, the steps formed by mining include a step plane and a step ramp connecting two adjacent step planes; the track beam is erected on the step plane of the steps formed by mining via a support device.

[0010] Furthermore, the support device is positioned near the outer side of the step plane.

[0011] Furthermore, the main drive system includes a main motor, a normally closed clutch, a first connecting shaft, a first coupling, a main reducer, and a second coupling. The right end of the normally closed clutch is connected to the output shaft of the main motor, and its left end is connected to the first connecting shaft. Under normal operating conditions, both are in a closed state to ensure the safety of the entire system. The left end of the first coupling is connected to the input shaft on the right side of the main reducer, and its right end is connected to the first connecting shaft. The right end of the second coupling is connected to the input shaft on the left side of the main reducer, and its left end is connected to the second connecting shaft.

[0012] Furthermore, the right drum is connected to the output shaft of the main reducer via a drum assembly coupling.

[0013] Furthermore, a slow-speed drive system is also provided, which includes a second connecting shaft, a slow-speed reducer, and a slow-speed drive motor; the slow-speed drive motor is connected to the input shaft of the slow-speed reducer via a motor coupling; a normally open clutch is connected to the output shaft of the slow-speed reducer; one end of the second connecting shaft is connected to the second coupling on the left side of the main reducer, and the other end is connected to the normally open clutch.

[0014] Furthermore, an open gear pair is installed at the coupling between the main drive system and the drum assembly; the open gear pair consists of a pinion and a large gear; the pinion is mounted on the output shaft of the main reducer, and the large gear is mounted on the end face of the right drum.

[0015] The conveying method using a single-line hoisting and conveying system for inclined rail mine cars in open-pit mines:

[0016] First, fully loaded mining trucks load the ore into mining cars at the bottom of the mine pit;

[0017] Next, the main motor starts rotating in the forward direction, and the hoisting and conveying system lifts and conveys the fully loaded mine car to the top of the mine. The empty mining truck at the top of the mine moves directly under the mine car, the unloading port at the bottom of the mine car opens, and the ore is unloaded from the mine car into the empty mining truck. After the ore is unloaded, the unloading port at the bottom of the mine car closes, and the mining truck transports the ore to the designated location.

[0018] Then, the main motor starts and reverses, and the unloaded empty mine cars descend along the track to the bottom of the mine pit, where fully loaded mining trucks continue to load ore onto the mine cars.

[0019] The beneficial effects of this invention are as follows: This invention uses a drum device to rotate and wind up a steel wire rope to pull a mine car along a track erected from the mine pit to the mine roof to achieve ore transportation. This realizes fast, safe, and low-cost hoisting and transportation of ore, solving problems such as long transportation distances, high slopes, low transportation efficiency, poor economics, and the exponential increase in consumables such as spare parts, fuel, and tires, as well as serious environmental pollution in open-pit and deep-pit mines. Through this "ore elevator" method, the fast, safe, and efficient transportation of ore is guaranteed, effectively shortening the transportation distance, significantly reducing ore transportation costs and carbon emissions, and enabling safe, green, high-quality, and intelligent development of mines. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the single-line hoisting and conveying system for mine cars on steeply inclined tracks in open-pit mines when the mine cars are at the bottom of the mine.

[0021] Figure 2 This is a schematic diagram of the overall structure of the single-line hoisting and conveying system for mine cars on steeply inclined tracks in open-pit mines when the mine cars are at the mine roof, as disclosed in this invention.

[0022] Figure 3 for Figure 1 A magnified view of part A;

[0023] Figure 4 for Figure 2 A magnified view of section B;

[0024] Figure 5 A partially enlarged view of an open gear pair installed at the coupling between the main drive system and the drum assembly.

[0025] In the diagram, 1-lifting and conveying line, 11-drum device, 111-left drum, 112-left drum disc brake, 113-drum coupling, 114-right drum, 115-right drum disc brake, 12-wire rope, 13-redirecting pulley block, 14-balance pulley block, 15-track beam, 16-support device, 17-moving pulley block, 18-mine car, 19-tensioning pulley block, 2-main drive system, 21-main motor, 22-normally closed clutch, 2 3-Connecting Shaft 1, 24-Coupling 1, 25-Block Brake 1, 26-Main Reducer, 27-Coupling 2, 28-Block Brake 2, 3-Drum Device Coupling, 4-Slow Speed ​​Drive System, 41-Connecting Shaft 2, 42-Normal Open Clutch, 43-Slow Speed ​​Reducer, 44-Motor Coupling, 45-Slow Speed ​​Drive Motor, 5-Open Gear Pair, 51-Pinus Gear, 52-Large Gear, 6-Step, 61-Step Plane, 62-Step Inclined Surface. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] Open-pit mine steep-angle track single-line hoisting and conveying system for mine cars, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the system includes a hoisting and conveying line 1, a main drive system 2, and a slow drive system 4. The hoisting and conveying line 1 includes a drum device 11, a wire rope 12, a redirecting pulley block 13, a balancing pulley block 14, a track beam 15, a support device 16, a movable pulley block 17, a tensioning pulley block 19, and a mine car 18. There are two sets of track beams 15, which are symmetrically mounted on both sides of the center line of the hoisting and conveying line 1. The two sets of track beams 15 are parallel to each other, and each set of track beams 15 extends obliquely upward from the bottom of the mine pit to the top of the mine pit. Each set of track beams 15 is equipped with a track. The mine car 18 is movably mounted on the track along the extension direction of the track beam 15. The drum device 11 includes a left drum 111 and a right drum 114, which are connected in series to form a double drum via a drum coupling 113. The spiral grooves on the left drum 111 and the right drum 114 rotate in opposite directions. A left disc brake 112 is installed at the end of the left drum 111. The brake disc of the left disc brake 112 is directly connected to the end of the left drum 111. The brake disc of the left disc brake 112 and the brake pads are matched to form the safety braking system of the left drum 111. A right disc brake 115 is installed at the end of the right drum 114. The brake disc of the right disc brake 115 and the brake pads are matched to form the safety braking system of the right drum 114.

[0028] A steel wire rope 12 is positioned between the drum device 11 and the mine car 18. Driven by the main drive system 2, the drum device 11 rotates, driving the steel wire rope 12 to pull the mine car 18 along the corresponding track. Specifically: two sets of movable pulley blocks 17 are symmetrically arranged on both sides of the mine car 18; after the mine car 18 is installed on the track, the two sets of movable pulley blocks 17 are symmetrical about the center line of the hoisting and conveying line 1. Two sets of balancing pulley blocks 14 are arranged at the mine roof, symmetrical about the center line of the hoisting and conveying line 1. Two sets of redirecting pulley blocks 13 are arranged between the top of the track beam 15 and the drum device 11, symmetrical about the center line of the hoisting and conveying line 1. A tensioning pulley block 19 is arranged between the two sets of balancing pulley blocks 14. One end of the wire rope 12 is fixed to the left drum 111, and the other end passes through the left-side redirecting pulley block 13 and extends downward along the track direction to the left-side movable pulley block 17 of the mine car 18. After passing through the left-side movable pulley block 17, it extends upward along the track direction to the left-side balance pulley block 14. Then, it passes through the left-side balance pulley block 14, the tensioning pulley block 19, and the right-side balance pulley block 14 in sequence and extends downward along the track direction to the right-side movable pulley block 17 of the mine car 18. After passing through the right-side movable pulley block 17 of the mine car 18, it extends upward along the track direction to the right-side redirecting pulley block 13, and after passing through the right-side redirecting pulley block 13, it extends to the right drum 114 and is fixed to the right drum 114, thus forming a wire rope winding system. It should be noted that if one end of the wire rope 12 is fixed to the left end of the left drum 111, then the other end is fixed to the right end of the right drum 114; if one end of the wire rope 12 is fixed to the right end of the left drum 111, then the other end is fixed to the left end of the left drum 111; and both ends of the wire rope 12 are simultaneously led out from the top of the drum device 11 or from the bottom of the drum device 11.

[0029] During mining operations, multiple steps 6 are formed from the bottom to the top of the mine. Each step 6 includes a step plane 61 and a step slope 62 connecting adjacent step planes 61. The track beam 15 is erected on the step plane 61 of the mining steps 6 via a support device 16, which fixes the track beam 15 and transmits the load. The support device 16 is located near the outer side of the step plane 61. In this way, by using the support device 16 to erect the track beam 15 in the air, the distance from the lower edge of the track beam 15 to the step plane 61 meets the conditions for traffic passage. This does not affect the mine's traffic requirements, which is beneficial for upgrading and transforming old mines using this technology, and can also meet the traffic needs of new mine construction.

[0030] The mine car 18 is also equipped with wheels that match the rails on the track beam 15. Under the traction of the wire rope 12, the fully loaded mine car 18 moves upward along the rails on the track beam 15, thereby lifting the ore.

[0031] The main drive system 2 includes a main motor 21, a normally closed clutch 22, a connecting shaft 23, a coupling 24, a main reducer 26, and a coupling 27. The right end of the normally closed clutch 22 is connected to the output shaft of the main motor 21, and its left end is connected to the connecting shaft 23. Under normal operating conditions, both are in a closed state to ensure the safety of the entire system. The left end of the coupling 24 is connected to the input shaft on the right side of the main reducer 26, and its right end is connected to the connecting shaft 23. The right end of the coupling 27 is connected to the input shaft on the left side of the main reducer 26, and its left end is connected to the connecting shaft 21. A block brake 25 is provided on the coupling 24. Specifically, the brake wheel of the block brake 25 is installed on the coupling 24, and the brake blocks of the block brake 25 are matched and installed with the brake wheel. A block brake 28 is installed on coupling 27. Specifically, the brake wheel of block brake 28 is mounted on coupling 27, and the brake blocks of block brake 28 are matched and installed with its brake wheel. The drum device 11 is connected to the output shaft of the main reducer 26 through the drum device coupling 3. This forms a dual-operating braking system for the main drive system 2, and the redundant braking design ensures the safe operation of the entire main drive system 2.

[0032] like Figure 1 and Figure 2 As shown, when using the open-pit mine steep-angle track single-line hoisting and conveying system disclosed in this invention to transport ore, the main motor 21 of the main drive system 2 starts rotating forward. The system lifts the fully loaded mine car 18 from the bottom of the mine pit to the top. The bottom of the fully loaded mine car 18 is equipped with an automatic double door and a locking mechanism. After the locking mechanism is unlocked, the double door opens, and the ore is unloaded into the empty mining truck waiting below. After the empty mining truck is filled with ore, it transports the ore to a designated location, unloads the ore, and returns to wait for loading. After the fully loaded mine car 18 is unloaded, its double door automatically closes, and the locking mechanism locks again. The main motor 21 starts rotating in reverse, and the system lowers the unloaded mine car 18 to the loading position at the bottom of the mine. The fully loaded mining truck at the bottom of the mine then loads ore into the mine car 18 again. In this way, the synchronous lifting and lowering of the ore and the mine car 18 is achieved, thereby realizing the fast, safe, and low-cost hoisting and conveying of ore.

[0033] At the drum coupling 3 between the main drive system 2 and the lifting and conveying line 1, when the transmission ratio cannot meet the speed requirements for lifting and lowering, an open gear pair 5 can be installed, such as... Figure 5 As shown, the open gear pair 5 consists of a pinion 51 and a gear 52; the pinion 51 is mounted on the output shaft of the main reducer 26, and the gear 52 is mounted on the end face of the right drum 114.

[0034] To facilitate system debugging and maintenance, a slow-speed drive system 4 is also provided. The slow-speed drive system 4 includes a connecting shaft 41, a normally open clutch 42, a slow-speed reducer 43, a motor coupling 44, and a slow-speed drive motor 45. The slow-speed drive motor 45 is connected to the input shaft of the slow-speed reducer 43 via the motor coupling 44. The normally open clutch 42 is connected to the output shaft of the slow-speed reducer 43, and under normal operating conditions, the normally open clutch 42 is disengaged. One end of the connecting shaft 41 is connected to the coupling 27 on the left side of the main reducer 26, and the other end is connected to the normally open clutch 42 of the slow-speed reducer 43. This slow-speed drive system 4 is used to achieve slow-speed drive of the lifting and conveying line 1.

[0035] When the system is first installed at the user's site and needs to be debugged, the safety braking system composed of the left disc brake 112 and the right disc brake 115 enters the safety braking state, disengaging the normally closed clutch 22 of the main drive system 2 and engaging the normally open clutch 42 of the slow drive system 4, thus allowing the entire system to be debugged.

[0036] When the system malfunctions or has problems requiring maintenance or repair, the safety braking system consisting of the left disc brake 112 and the right disc brake 115 engages, disengaging the normally closed clutch 22 of the main drive system 2 and engaging the normally open clutch 42 of the slow drive system 4. This puts the entire system into slow drive mode. First, release the safety braking system, then lower the mine car 18 to the bottom of the mine pit and stop it. The system can then be inspected, maintained, and repaired, followed by debugging and test runs. After completion, it can be switched to normal operating mode.

[0037] In the wire rope winding system of the lifting and conveying line 1, which consists of the drum device 11, wire rope 12, redirecting pulley block 13, balancing pulley block 14, moving pulley block 17, tensioning pulley block 19, etc., a real-time monitoring and early warning protection system for wire rope breakage is set up to realize real-time monitoring and alarm of wire rope breakage, so as to ensure the safety and reliability of the system.

[0038] The hoisting and conveying system disclosed in this invention can be designed in three installation forms: fixed installation, semi-mobile, and mobile. Fixed installation refers to an installation method where the components of the hoisting and conveying system connected to the foundation are fixedly connected to the foundation by welding or anchor bolts, using methods such as foundation plates and anchor bolts. This installation method is safe and reliable, but it is costly, difficult to disassemble and assemble, and time-consuming. It is mainly used in open-pit mines where the components of the hoisting and conveying system do not need to be moved after installation or where the relocation interval is long. Semi-mobile installation refers to a method where the components of the hoisting and conveying system connected to the foundation are directly placed on the pre-treated ground. The foundation components themselves do not have self-moving mechanisms or power sources. They are usually designed with structures such as slippers, front and rear wedges, or tires, and are moved by external traction or pushing. This installation method does not require foundation plates or anchor bolts, making relocation convenient, quick, and low-cost. It is mainly used in open-pit mines where relocation is relatively frequent after installation (usually once every six months to one year). Mobile hoisting refers to hoisting and conveying systems where the components connected to the foundation are designed with a moving mechanism and have their own power system, such as tracked walking mechanisms and tire drive systems. They are easy and quick to relocate, but have high manufacturing costs. They are mainly used in open-pit mines where frequent relocation is required after installation (usually once every 1 to 2 months).

[0039] This lifting and conveying system replaces the traditional uphill sections transported by open-pit mine trucks with a conveying method, effectively reducing the impact of severe weather such as rain and snow on the system's operation. It avoids accidents involving personnel and vehicles caused by slippage or road entrapment that can occur with mining trucks during heavy rain or snow, which typically necessitate shutdowns. This significantly improves the system's safety, operating time, and efficiency.

[0040] The hoisting and conveying system is designed with both automatic and manual operation modes. The automatic operation mode can be combined with the mine's 5G communication and Beidou navigation system to use driverless mining trucks for transportation at the bottom and top of the mine, enabling intelligent transportation of ore throughout the mine.

[0041] When designing new mines or renovating old mines, this hoisting and conveying technology can be adopted in the design of ore conveying ramps or in the renovation of old mines. Electric mining trucks can be used for transportation at the mine top and bottom, realizing the widespread application of electric mining trucks in mines. This can not only significantly reduce transportation costs, but also reduce mine pollution emissions, enabling mines to develop in a green and environmentally friendly direction.

[0042] The hoisting and conveying system can also unload ore directly from the mine top to the crushing station. After crushing, the ore is transported by belt conveyor, further reducing ore transportation costs.

[0043] In the description of this specification, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-line hoisting and conveying system for inclined track mine cars in open-pit mines, characterized in that: The system includes a hoisting and conveying line (1) and a main drive system (2); the hoisting and conveying line (1) includes a drum device (11), a wire rope (12), a track beam (15), and a mine car (18); there are two sets of track beams (15), which are symmetrically mounted on both sides of the center line of the hoisting and conveying line (1), and each set of track beams (15) extends obliquely upward from the bottom of the mine pit to the top of the mine pit; each set of track beams (15) is equipped with a track; the mine car (18) is movably mounted on the track along the extension direction of the track beam (15); the drum device (11) includes a left drum (111) and a right drum (114), which are connected in series in the middle by a drum coupling (113) to form a double drum; the spiral grooves on the left drum (111) and the right drum (114) have opposite rotation directions; the wire rope (12) is mounted on the drum device (11) and the main drive system (2). Between the mine cars (18), the main drive system (2) is connected to the drum device (11), driving the drum device (11) to rotate, so that the wire rope (12) winds around the left drum (111) and the right drum (114) to pull the mine car (18) along the track; both ends of the wire rope (12) are simultaneously led out from above the drum device (11) or from below the drum device (11); the steps (6) formed by mining include the step plane (61) and the step slope (62) connecting the two adjacent step planes (61); the track beam (15) is erected on the step plane (61) of the steps (6) formed by mining via the support device (16); the support device (16) is set close to the outside of the step plane (61); the support device (16) erects the track beam (15) in the air, so that the distance from the lower edge of the track beam (15) to the step plane (61) meets the conditions for mine truck passage.

2. The single-line hoisting and conveying system for inclined track mine cars in open-pit mines according to claim 1, characterized in that: Two sets of movable pulley groups (17) are arranged on both sides of the mine car (18); after the mine car (18) is installed on the track, the two sets of movable pulley groups (17) are symmetrical to the center line of the hoisting and conveying line (1); two sets of balancing pulley groups (14) are set diagonally above the top of the track beam (15), the two sets of balancing pulley groups (14) are symmetrical to the center line of the hoisting and conveying line (1), and a tensioning pulley group (19) is set in the middle of the two sets of balancing pulley groups (14); two sets of redirecting pulley groups (13) are set between the top of the track beam (15) and the drum device (11), the two sets of redirecting pulley groups (13) are symmetrical to the center line of the hoisting and conveying line (1); one end of the wire rope (12) is fixed to the left drum (111), and the other end After passing the left-side redirecting pulley group (13), the wire rope extends downward along the track direction to the left-side movable pulley group (17) of the mine car (18). After passing the left-side movable pulley group (17), the wire rope extends upward along the track direction to the left-side balance pulley group (14). Then, after passing the left-side balance pulley group (14), tensioning pulley group (19), and right-side balance pulley group (14) in sequence, the wire rope extends downward along the track direction to the right-side movable pulley group (17) of the mine car (18). After passing the right-side movable pulley group (17) of the mine car (18), the wire rope extends upward along the track direction to the right-side redirecting pulley group (13). After passing the right-side redirecting pulley group (13), the wire rope extends to the right drum (114) and is fixed to the right drum (114), thus forming a wire rope winding system.

3. The single-line hoisting and conveying system for inclined track mine cars in open-pit mines according to claim 1, characterized in that: The left drum (111) is equipped with a left drum disc brake (112) at its end; the right drum (114) is equipped with a right drum disc brake (115) at its end.

4. The single-line hoisting and conveying system for inclined track mine cars in open-pit mines according to any one of claims 1 to 3, characterized in that: The main drive system (2) includes a main motor (21), a normally closed clutch (22), a connecting shaft one (23), a coupling one (24), a main reducer (26), and a coupling two (27); the right end of the normally closed clutch (22) is connected to the output shaft of the main motor (21), and its left end is connected to the connecting shaft one (23); the left end of the coupling one (24) is connected to the input shaft on the right side of the main reducer (26), and its right end is connected to the connecting shaft one (23); the right end of the coupling two (27) is connected to the input shaft on the left side of the main reducer (26), and its left end is connected to the connecting shaft two (41); a block brake one (25) is provided on the coupling one (24); a block brake two (28) is provided on the coupling two (27).

5. The single-line hoisting and conveying system for inclined track mine cars in open-pit mines according to claim 4, characterized in that: The right drum (114) is connected to the main reducer (26) via the drum device coupling (3).

6. The single-line hoisting and conveying system for inclined track mine cars in open-pit mines according to claim 5, characterized in that: A slow drive system (4) is also provided, which includes a connecting shaft two (41), a normally open clutch (42), a slow reducer (43), a motor coupling (44), and a slow drive motor (45). The slow drive motor (45) is connected to the input shaft of the slow reducer (43) through the motor coupling (44). The normally open clutch (42) is connected to the output shaft of the slow reducer (43). One end of the connecting shaft two (41) is connected to the coupling two (27) on the left side of the main reducer (26), and the other end is connected to the normally open clutch (42) of the slow reducer (43).

7. The single-line hoisting and conveying system for inclined track mine cars in open-pit mines according to claim 6, characterized in that: An open gear pair (5) is provided at the coupling (3) between the main drive system (2) and the drum device. The open gear pair (5) consists of a pinion (51) and a large gear (52). The pinion (51) is installed on the output shaft of the main reducer (26), and the large gear (52) is installed on the end face of the right drum (114).

8. The conveying method using the single-line hoisting and conveying system for inclined track mine cars in open-pit mines as described in claim 7, characterized in that: First, fully loaded mining trucks load the ore into mining cars at the bottom of the mine pit (18). Next, the main motor (21) starts to rotate forward, and the mine car (18) is transported along the track to the top of the mine. The empty mining truck moves to the bottom of the mine car (18), the unloading port at the bottom of the mine car (18) opens, and the ore is unloaded from the mine car (18) to the empty mining truck. After the ore is unloaded, the unloading port at the bottom of the mine car (18) is closed, and the mining truck transports the ore to the designated location. Then, the main motor (21) starts to reverse, and the mine car (18) descends along the track to the bottom of the mine pit, and then the fully loaded mining truck continues to load the mine car (18) with ore.

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