Large-inclination track mine truck single-line lifting and conveying system and conveying method for open-pit mine

Abstract

The present application is a single-line lifting and conveying system and method for large-dip-angle track mine trucks in open-pit mines, belonging to the field of ore transportation, aiming to quickly, efficiently and safely transport ores. It includes a winding drum device, a steel wire rope, a track beam, a transfer transition bridge and a carrying trolley. The winding drum device rotates to wind the steel wire rope to pull the carrying trolley along the track erected from the pit to the top of the mine to realize ore transportation, and through the synchronous lifting of the mine truck and the carrying trolley, the conversion of ores between the mine truck and the carrying trolley is avoided. Through the combination of multiple such lifting and conveying systems, series, parallel and series-parallel lifting and conveying systems can be formed to meet the ore lifting and conveying of super-deep open-pit mines, super-large open-pit mines and super-deep super-large open-pit mines. Through the "ore elevator" method, the rapid, safe and efficient transportation of ores is ensured, the transportation distance is effectively shortened, the cost and carbon emissions of ore transportation are greatly reduced, and the safe, green and intelligent development of mines is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ore transportation, and in particular to a large-dip-angle track ore truck single-line lifting and conveying system and conveying method for open-pit mines. BACKGROUND

[0002] At present, the conveying of ores in open-pit mines at home and abroad usually adopts three transportation modes of mine truck transportation, belt conveyor transportation and railway transportation, or a combination of the three modes. These transportation modes have their own characteristics: the belt conveyor transportation has the advantages of continuous conveying, large conveying capacity and high efficiency, but has high use cost and high failure rate, and the conveying inclination angle is small (not more than 15 degrees, usually not more than 13 degrees); the railway transportation has the characteristics of large transportation capacity and high efficiency, but has high construction and maintenance costs, and the conveying inclination angle is small (the maximum slope is not more than 2.5%, ≤1.5 degrees), and is usually arranged at the top of the mine to form a combined transportation system with mine trucks or belt conveyors; the mine truck transportation has the advantages of high flexibility and strong adaptability, but has high cost and safety hazards and environmental pollution problems, and is the main transportation mode of open-pit mines at present.

[0003] With the increasing depth of open-pit mining, the belt conveyor transportation and railway transportation are limited by the conveying inclination angle, and cannot meet the conveying requirements of large inclination angles (>15 degrees), and at present, the mode of electric shovel excavation and loading and mine truck transportation is basically adopted. As the depth of open-pit mining is deeper, the distance of ore transportation is longer, the slope is steeper, the ramp is longer, and the climbing height is higher. The mine truck transports the fully loaded ore from the bottom of the pit to the top of the pit along the mine tunnel, and unloads at the crushing station or the stockyard. The round-trip transportation distance is much longer than the economic transportation distance, which not only causes low transportation efficiency, but also causes the consumption of spare parts, fuel, tires and other consumables to increase exponentially, the cost to increase substantially, and the green, high-quality and intelligent development of the mine to be severely restricted, and the popularization and application of electric mine trucks in the mine to be affected. SUMMARY

[0004] The purpose of the present application is to solve the drawbacks of the electric shovel excavation and loading and mine truck transportation mode, and to provide a large-dip-angle track ore truck single-line lifting and conveying system and conveying method for open-pit mines, so as to quickly, efficiently and safely transport ores, greatly reduce the cost of ore transportation and carbon emissions, and realize the green, high-quality and intelligent development of the mine.

[0005] The technical scheme adopted by the present application is: the single-line lifting conveying system of the large-inclination track mine truck in the open-pit mine, which comprises a basic single-line system, the basic single-line system comprises a lifting conveying line and a main driving system; the lifting conveying line comprises a drum device, a steel wire rope, a track beam, a transfer transition bridge and a carrying trolley for carrying the mine truck; the track beam has two sets, the two sets of track beams are symmetrically erected on the two sides of the center line of the lifting conveying line and each set of track beam extends upwardly from the bottom of the mine pit to the top of the mine pit; each set of track beam is respectively provided with a track; the carrying trolley is movably arranged on the track along the extending direction of the track beam; the drum device comprises a left drum and a right drum, the left drum and the right drum are connected in series through a drum coupling to form a double drum; the rotation directions of the spiral grooves on the left drum and the right drum are opposite; the steel wire rope is arranged between the drum device and the carrying trolley; the drum device is connected with the main driving system through a drum device coupling, the drum device is driven to rotate by the main driving system, the steel wire rope pulls the carrying trolley to run along the corresponding track; the steps formed by the mining of the mine comprise step planes and step inclined surfaces connecting the step planes of two adjacent steps; the transfer transition bridge is installed at the top end of the track beam, the upper surface of the transfer transition bridge is flush with the step plane of the step where the top end of the track beam is located, when the carrying trolley runs to the limit position of the top end of the track, a passing channel is formed by the transfer transition bridge, the upper surface of the carrying trolley and the step plane of the top end of the track beam; a downwardly recessed groove is arranged on the step plane corresponding to the bottom end of the track beam, the track beam extends into the groove, when the carrying trolley runs to the limit position of the bottom end of the track, the upper surface of the carrying trolley is flush with the step plane corresponding to the bottom end of the track beam.

[0006] Further, two sets of dynamic pulley blocks are arranged on the two sides of the carrying trolley; after the carrying trolley is installed on the track, the two sets of dynamic pulley blocks are also symmetric to the center line of the lifting conveying line; two sets of balance pulley blocks are arranged obliquely above the top end of the track beam, the two sets of balance pulley blocks are symmetrically arranged at the center of the lifting conveying line; a set of tension pulley block is arranged between the two sets of balance pulley blocks; two sets of redirection pulley blocks are arranged between the top end of the track beam and the drum device, the two sets of redirection pulley blocks are symmetrically arranged at the center of the lifting conveying line; one end of the steel wire rope is fixed to the left drum, the other end of the steel wire rope extends downwardly along the track direction to the dynamic pulley block on the left side of the carrying trolley after passing through the redirection pulley block on the left side, extends upwardly along the track direction to the balance pulley block on the left side after passing through the dynamic pulley block on the left side of the carrying trolley, extends downwardly along the track direction to the dynamic pulley block on the right side of the carrying trolley after passing through the balance pulley block on the left side, the tension pulley block and the balance pulley block on the right side in turn, extends upwardly along the track direction to the redirection pulley block on the right side after passing through the dynamic pulley block on the right side of the carrying trolley, and extends to the right drum after passing through the redirection pulley block on the right side and is fixed to the right drum, to form a steel wire rope winding system.

[0007] Further, the end of the left drum is provided with a disc brake one, and the end of the right drum is provided with a disc brake two.

[0008] Further, the track beam is erected on the bench plane of the bench formed by the mining by the supporting device.

[0009] Further, the supporting device is arranged close to the outside of the bench plane.

[0010] Further, the main drive system comprises a main motor, a normally closed clutch, a connecting shaft one, a coupling one, a main reducer and a coupling two; the right end of the normally closed clutch is connected with the output shaft of the main motor, and the left end thereof is connected with the connecting shaft one; the left end of the coupling one is connected with the input shaft on the right side of the main reducer, and the right end thereof is connected with the connecting shaft one; the right end of the coupling two is connected with the input shaft on the left side of the main reducer, and the left end thereof is connected with the connecting shaft two; a block brake one is arranged on the coupling one; a block brake two is arranged on the coupling two.

[0011] Further, the winding drum device is connected with the output shaft of the main reducer through a winding drum device coupling.

[0012] Further, a slow drive system is further arranged; the slow drive system comprises a connecting shaft two, a slow reducer and a slow drive motor; the slow drive motor and the input shaft of the slow reducer are connected through a motor coupling; the output shaft of the slow reducer is connected with a normally open clutch; one end of the connecting shaft two is connected with the coupling two on the left side of the main reducer, and the other end thereof is connected with the normally open clutch.

[0013] Further, an open gear pair is arranged between the winding drum device and the main reducer; the open gear pair is composed of a pinion and a gear; the pinion is installed on the output shaft of the main reducer, and the gear is installed on the end face of the right winding drum.

[0014] Further, the single-line lifting and conveying system of the large-inclination track mine truck in the open-pit mine is a series lifting and conveying system, which is composed of a plurality of sets of the basic single-line system arranged in series along the inclined direction of the bench and staggered with each other; the adjacent two sets of basic single-line systems in the series lifting and conveying system are connected on the same bench plane; on the bench plane where the connection is performed, each set of basic single-line system is provided with a rotary table on the side of the bench inclined surface of the upper bench, and the top surface of the rotary table is flush with the bench plane of the bench.

[0015] Further, the single-line lifting and conveying system of the large-inclination track mine truck in the open-pit mine is a series-parallel lifting and conveying system, which is composed of a plurality of sets of the series lifting and conveying system arranged in parallel along the bench plane of the bench.

[0016] Further, the single-line lifting and conveying system of the large-inclination track mine truck in the open-pit mine is a parallel lifting and conveying system, which is composed of a plurality of sets of the basic single-line system arranged in parallel along the bench plane of the bench.

[0017] The conveying method of the open-pit mine large-inclination track mine truck single-line lifting conveying system comprises the following steps:

[0018] Firstly, the full-load mine truck drives onto the upper surface of the carrying trolley from the step plane at the bottom of the pit;

[0019] Then, the main motor starts forward rotation, the lifting conveying line lifts the carrying trolley and the full-load mine truck to the top of the pit, the full-load mine truck drives out of the carrying trolley through the transfer transition bridge and transports the ore to the designated position;

[0020] Then, the empty mine truck that returns is directly driven into the carrying trolley through the transfer transition bridge, the main motor starts reverse rotation, the lifting conveying line lowers the carrying trolley and the empty mine truck along the track to the bottom of the pit, and the empty mine truck drives out of the carrying trolley to the designated position to continue loading the ore.

[0021] The present application has the following advantages: the present application uses the drum device to rotate and wind the steel wire rope to pull the carrying trolley to run along the track erected from the pit to the top of the pit to realize ore transportation, and through the synchronous lifting of the mine truck and the carrying trolley, the conversion of the ore between the mine truck and the carrying trolley is avoided, thereby realizing the rapid, safe and low-cost lifting conveying of the ore, solving the problems of long transportation distance, high climbing, low transportation efficiency, poor economy, and the problems of the rapid increase of consumables such as spare parts, fuel, tires, the large increase of cost, and the serious environmental pollution in the deep pit mine of the open-pit mine, and solving the problems of the large damage of the electric mine truck to the battery when climbing, the difficulty in promoting and constructing the green mine, and the like. Through the method of "ore taking the elevator", the rapid, safe and efficient ore transportation is ensured, the transportation distance is effectively shortened, the ore transportation cost and carbon emission are greatly reduced, and the safe, green, high-quality and intelligent development of the mine can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the open-pit mine large-inclination track mine truck single-line lifting conveying system when the carrying trolley is at the bottom of the pit according to the present application;

[0023] Figure 2 Fig. 2 is a schematic diagram of the overall structure of the open-pit mine large-inclination track mine truck single-line lifting conveying system when the carrying trolley is at the top of the pit according to the present application.

[0024] Figure 3 Fig. 3 is an enlarged view of A of Fig. 1. Figure 1 Fig. 4 is an enlarged view of B of Fig. 1.

[0025] Figure 4 Fig. 5 is an enlarged view of A of Fig. 2. Figure 2 Fig. 6 is an enlarged view of B of Fig. 2.

[0026] Figure 5 Partial enlarged view of open gear pair arranged at main drive system and drum device coupling.

[0027] Figure 6 Schematic diagram of 3 sets of basic single-line systems arranged in series.

[0028] Figure 7 Schematic diagram of 3 sets of basic single-line systems arranged in parallel.

[0029] Figure 8 Schematic diagram of 9 sets of basic single-line systems arranged in series and parallel, and the example in the diagram is that 3 sets of series lifting conveying systems are arranged in parallel, and each set of series lifting conveying system has 3 sets of basic single-line systems.

[0030] Figure 9 Schematic diagram of rotary table.

[0031] In the diagram, 1-lifting conveying line, 11-drum device, 111-left drum, 112-disc brake I, 113-drum coupling, 114-right drum, 115-disc brake II, 12-steel wire rope, 13-reversing pulley block, 14-balancing pulley block, 15-transferring transition bridge, 16-rail beam, 17-supporting device, 18-moving pulley block, 19-carrying trolley, 20-tensioning pulley block, 2-main drive system, 21-main motor, 22-constant-closed clutch, 23-connection shaft I, 24-coupling I, 25-block brake I, 26-main reducer, 27-coupling II, 28-block brake II, 3-drum device coupling, 4-low-speed drive system, 41-connection shaft II, 42-constant-open clutch, 43-low-speed reducer, 44-motor coupling, 45-low-speed drive motor, 5-open gear pair, 51-small gear, 52-large gear, 6-mining truck, 7-step, 71-step plane, 72-step inclined plane, 8-series lifting conveying system, 81-mining bottom lifting conveying unit, 82-middle section lifting conveying unit, 83-mining top lifting conveying unit, 84-rotary table, 9-parallel lifting conveying system, 91-left lifting conveying unit, 92-middle lifting conveying unit, 93-right lifting conveying unit, 10-series and parallel lifting conveying system, 101-left series lifting conveying unit, 102-middle series lifting conveying unit, 103-right series lifting conveying unit, 200-basic single-line system. DETAILED DESCRIPTION

[0032] The present application is further described below in conjunction with the accompanying drawings and examples as follows:

[0033] The disclosed open-pit mine large-inclination rail mining truck single-line lifting conveying system, like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it comprises a basic single-wire system 200, which comprises a hoisting conveying line 1 and a main driving system 2. The hoisting conveying line 1 comprises a drum device 11, a steel wire rope 12, a redirecting pulley block 13, a balancing pulley block 14, a transfer transition bridge 15, track beams 16, a supporting device 17, a movable pulley block 18, a tensioning pulley block 20 and a load carrier 19 for carrying a mine truck 6; the track beams 16 are provided in two sets, the two sets of track beams 16 are symmetrically erected on the two sides of the center line of the hoisting conveying line 1, are parallel to each other, and each set of track beams 16 extends upwardly and obliquely from the bottom of the mine pit to the top of the mine pit; each set of track beams 16 is provided with a track; the load carrier 19 is movably arranged on the track along the extending direction of the track beams 16.

[0034] The drum device 11 comprises a left drum 111 and a right drum 114, which are connected in series through a drum coupling 113 to form a double drum; the helical grooves on the left drum 111 and the right drum 114 are in opposite directions. The end of the left drum 111 is provided with a disc brake 1 12, specifically, the brake disc of the disc brake 1 12 is directly connected to the end of the left drum 111, and matches with the brake block of the disc brake 1 12 to form a safety braking system of the left drum 111. The end of the right drum 114 is provided with a disc brake 2 115, specifically, the brake disc of the disc brake 2 115 is directly connected to the end of the right drum 114, and matches with the brake block of the disc brake 2 115 to form a safety braking system of the right drum 114.

[0035] The steel wire rope 12 is arranged between the winding drum device 11 and the carrying trolley 19, the winding drum device 11 is connected with the main driving system 2 through the winding drum device coupling 3, the winding drum device 11 is driven to rotate by the main driving system 2 to drive the steel wire rope 12 to pull the carrying trolley 19 to run along the corresponding track. Specifically, two sets of dynamic pulley blocks 18 are symmetrically arranged on both sides of the carrying trolley 19; after the carrying trolley 19 is installed to the track, the two sets of dynamic pulley blocks 18 are also symmetric to the center line of the lifting conveying line 1. Two sets of balance pulley blocks 14 are arranged on the mine roof, and the two sets of balance pulley blocks 14 are symmetric to the center line of the lifting conveying line 1; a set of tension pulley block 20 is arranged between the two sets of balance pulley blocks 14. Two sets of deflection pulley blocks 13 are arranged between the top end inclined upper side of the track beam 16 and the winding drum device 11, and the two sets of deflection pulley blocks 13 are symmetric to the center line of the lifting conveying line 1. One end of the steel wire rope 12 is fixed to the left winding drum 111, the other end of the steel wire rope 12 extends downward along the track direction to the dynamic pulley block 18 on the left side of the carrying trolley 19 after winding through the left deflection pulley block 13, extends upward along the track direction to the left balance pulley block 14 after winding through the left dynamic pulley block 18, and then extends downward along the track direction to the dynamic pulley block 18 on the right side of the carrying trolley 19 after winding through the left balance pulley block 14, the tension pulley block 20 and the right balance pulley block 14 in turn, extends upward along the track direction to the right deflection pulley block 13 after winding through the dynamic pulley block 18 on the right side of the carrying trolley 19, and extends to the right winding drum 114 after winding through the right deflection pulley block 13 and is fixed to the right winding drum 114, to form a steel wire rope winding system. It should be noted that if one end of the steel wire rope 12 is fixed to the left end of the left winding drum 111, then the other end is fixed to the right end of the right winding drum 114; if one end of the steel wire rope 12 is fixed to the right end of the left winding drum 111, then the other end is fixed to the left end of the right winding drum 114; and both ends of the steel wire rope 12 are drawn out from above the winding drum device 11 or from below the winding drum device 11.

[0036] When the mine is exploited, a plurality of steps 7 are formed from the mine bottom to the mine top, each step 7 formed by the mine exploitation includes a step plane 71 and a step inclined surface 72 connecting two adjacent step planes 71. The transfer transition bridge 15 is installed at the top end of the track beam 16, and the upper surface thereof is flush with the step plane 71 of the step 7 at the top end of the track beam 16, when the carrying trolley 19 runs to the limit position at the top end of the track, a passing channel is formed by the transfer transition bridge 15, the upper surface of the carrying trolley 19 and the step plane 71 at the top end of the track beam 16. After the carrying trolley 19 carries the fully loaded mine truck 6 to the limit position at the top end of the track, the mine truck 6 can drive onto the step plane 71 on the mine roof from the transfer transition bridge 15.

[0037] The bottom end of the track beam 16 is provided with a downward recessed groove corresponding to the step plane 71, and the track beam 16 extends into the groove. When the carrying trolley 19 runs to the track bottom end limit position, the upper surface of the carrying trolley 19 is flush with the step plane 71 corresponding to the bottom end of the track beam 16. When the carrying trolley 19 runs to the track bottom end limit position, the fully loaded mine truck 6 can drive into the carrying trolley 19 from the step plane 71 corresponding to the bottom end of the track beam 16, and then be lifted upward along the track with the carrying trolley 19.

[0038] The support device 17 is installed on the step plane 71 of each step 7 formed by the mining and is close to the step slope 72 side of the same step 7. It is located below and connected with the track beam 16, used for fixing and supporting the track beam 16 and transmitting load, which can be a steel column, a steel truss, etc.

[0039] The carrying trolley 19 is provided with wheels matched with the tracks on the track beam 16. Under the traction of the steel wire rope 12, the carrying trolley 19 carries the fully loaded mine truck 6 to run upward along the tracks on the track beam 16, realizes the lifting of the mine truck 6, and thus realizes the lifting of the ore.

[0040] The main drive system 2 comprises 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 with the output shaft of the main motor 21, and the left end is connected with the connecting shaft one 23. In normal working condition, it is in closed state to ensure the safety of the whole system. The left end of the coupling one 24 is connected with the input shaft on the right side of the main reducer 26, and the right end is connected with the connecting shaft one 23. The right end of the coupling two 27 is connected with the input shaft on the left side of the main reducer 26, and the left end is connected with the connecting shaft two 41. A block brake one 25 is arranged on the coupling one 24. Specifically, the brake wheel of the block brake one 25 is installed on the coupling one 24, and the brake block of the block brake one 25 is matched and installed with the brake wheel. A block brake two 28 is arranged on the coupling two 27. Specifically, the brake wheel of the block brake two 28 is installed on the coupling two 27, and the brake block of the block brake two 28 is matched and installed with the brake wheel. The drum device 11 is connected with the output shaft of the main reducer 26 through the drum device coupling 3. Thus, the double working brake system of the main drive system 2 is composed, and the redundant brake design ensures the safety of the whole system.

[0041] When the open gear pair 5 is used to replace the drum device coupling 3 of the main drive system 2 and the lifting conveying line 1, the open gear pair 5 is composed of a pinion 51 and a gear 52, the pinion 51 is installed on the output shaft of the main reducer 26, and the gear 52 is installed on the end face of the right drum 114, and the pinion 51 and the gear 52 are engaged.

[0042] When the transmission ratio cannot meet the speed requirement of lifting and descending at the drum device coupling 3 of the main drive system 2 and the lifting conveying line 1, a set of open gear pair 5 can be arranged to replace the drum device coupling 3, as shown in the figure, the open gear pair 5 is composed of a pinion 51 and a gear 52, the pinion 51 is installed on the output shaft of the main reducer 26, and the gear 52 is installed on the end face of the right drum 114, and the pinion 51 and the gear 52 are engaged. Figure 5

[0043] In order to facilitate system debugging and maintenance, a slow drive system 4 is also arranged. The slow drive system 4 comprises a connecting shaft two 41, a slow reducer 43 and a slow drive motor 45; the slow drive motor 45 and the input shaft of the slow reducer 43 are connected through a motor coupling 44; a normally open clutch 42 is connected to the output shaft of the slow reducer 43, and the normally open clutch 42 is in a disengaged state under normal working conditions; 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. The slow drive system 4 is used to realize slow driving of the lifting conveying line 1.

[0044] When the system is first installed in the user's field and needs to be debugged, the safety braking system composed of the disc brake one 112 and the disc brake two 115 enters the safety braking state, the normally closed clutch 22 of the main drive system 2 is disengaged, and the normally open clutch 42 of the slow drive system 4 is closed, so that the whole system is in a slow lifting conveying state, and the whole system can be debugged.

[0045] ​When the system needs maintenance and repair due to failure, problems and the like, the safety braking system composed of the disc brake one 112 and the disc brake two 115 enters the safety braking state, the normally closed clutch 22 of the main drive system 2 is disengaged, and the normally open clutch 42 of the slow drive system 4 is engaged, so that the whole system enters the slow drive state. First, the safety braking system is loosened, then the carrier trolley 19 is lowered to the bottom of the mine pit and parked, and then the system can be checked, maintained, repaired, debugged and tested, and the like, and after completion, the system can be switched to the normal working state.

[0046] A steel wire rope broken wire real-time monitoring and early warning protection system can be arranged on the steel wire rope winding system composed of the winding drum device 11, the steel wire rope 12, the redirecting pulley block 13, the balancing pulley block 14, the movable pulley block 18, the tension pulley block 20 and the like in the lifting conveying line 1, real-time monitoring and alarm of the steel wire rope broken wire are realized, and the safety and reliability of the system are ensured.

[0047] The lifting conveying system disclosed by the application can be designed into three installation forms of fixed installation type, semi-mobile type and mobile type. The fixed installation type refers to a fixing connection mode of welding or foundation bolt between the parts connected with the foundation in the lifting conveying system and the foundation through the foundation embedded plate and foundation bolt on the foundation. This installation mode is safe and reliable in connection, but has high cost, is difficult to disassemble and assemble, and takes a long time, and is mainly used for open-pit mines which do not need to be moved after installation or have a long interval between movements. The semi-mobile type refers to that the parts connected with the foundation in the lifting conveying system are directly placed on the pretreated ground, the foundation parts themselves do not have a self-moving mechanism and power, and usually have structures such as skid shoes, front and rear wedge shapes or tires designed on the foundation parts, and are moved by external force traction or pushing. This installation mode does not need foundation embedded plate and foundation bolt, and is convenient, fast and low in cost, and is mainly used for open-pit mines which need to be moved relatively frequently (usually moved once every half year to one year) after installation. The mobile type refers to that the parts connected with the foundation in the lifting conveying system are designed with a moving mechanism and have a power system, such as a track walking mechanism and a tire driving system, and are convenient and fast to move, but have high manufacturing cost, and are mainly used for open-pit mines which need to be moved frequently (usually moved once every one month to two months) after installation.

[0048] The track beam 16 is erected in the air by the supporting device 17, so that the distance from the lower edge of the track beam 16 to the step plane 71 meets the traffic condition, which does not affect the traffic requirement of the mine, is beneficial to the upgrading and reconstruction of the old mine by using the technology, and meets the traffic requirement of the new mine construction.

[0049] The lifting conveying system uses conveying method for the climbing section of the original open-pit mine truck transportation, which can effectively reduce the influence of bad weather such as rain and snow on the system work, avoid the safety accidents of personnel and vehicles caused by the skidding and road subsidence of the mine truck in the heavy rain and snow weather, and usually need to be shut down. In this way, the safety, working time and operation efficiency of the system are effectively improved.

[0050] Further, in the design of a new mine or the transformation of an old mine, the climbing section of the ore conveying is designed or the old mine is transformed by using the lifting conveying technology. The original fuel mine truck can be replaced by an electric mine truck, realizing the popularization and application of the electric mine truck in the mine. Not only can the transportation cost be greatly reduced, but also the pollution emission of the mine can be reduced, realizing the development of the mine towards green and environmental protection.

[0051] Further, the lifting conveying system is designed with automatic operation and manual operation modes. The automatic operation mode can be combined with the 5G communication and Beidou navigation system of the mine, and the unmanned mine truck transportation can be realized, so as to realize the intelligent conveying of the entire mine ore.

[0052] In the specification, the basic single-line system 200 is a basic conveying unit. The open-pit mine large-inclination track mine truck single-line lifting conveying system in the specification can be a set of the basic single-line system 200. The set of basic single-line system 200 extends from the bottom of the mine pit to the top of the mine pit. The above description is a set of the basic single-line system 200 and the conveying method. Of course, the open-pit mine large-inclination track mine truck single-line lifting conveying system can also be a series lifting conveying system 8, a parallel lifting conveying system 9 and a series-parallel lifting conveying system 10 composed of multiple sets of basic single-line systems 200. Details are as follows:

[0053] As shown in Figure 6 , the open-pit mine large-inclination track mine truck single-line lifting conveying system is a series lifting conveying system 8. The series lifting conveying system 8 includes a mine bottom lifting conveying unit 81, a middle section lifting conveying unit 82 and a mine top lifting conveying unit 83. The mine bottom lifting conveying unit 81 and the mine top lifting conveying unit 83 are each a set of Figure 6 In the embodiment shown in , the middle section lifting conveying unit 82 has one set, but the number of the middle section lifting conveying unit 82 is not limited to one set, and the number is greater than or equal to 0. The mine bottom lifting conveying unit 81, the middle section lifting conveying unit 82 and the mine top lifting conveying unit 83 are each a basic single-line system 200, which are arranged in series and staggered along the inclined direction of the mine steps.

[0054] The adjacent two sets of basic single-line systems 200 in the series connection lifting conveying system 8 are connected on the same level step plane 71. On the step plane 71 where the connection is made, each set of basic single-line system 200 is provided with a rotary table 84 on the side of the step slope 72 of the upper step 7, as shown in the figure. The top surface of the rotary table 84 is flush with the step plane 71 of the step 7. Figure 9

[0055] When the mine truck is transferred between the adjacent two sets of basic single-line systems 200, the mine truck 6 first drives out of the load carrier 19 and the transfer transition bridge of the current set of basic single-line system 200, drives onto the corresponding rotary table 84, turns after the rotation, and then drives away from the current basic single-line system 200. Then, the mine truck 6 drives into the corresponding rotary table 84 of the next set of basic single-line system 200, turns after the rotation of the rotary table 84, and then drives into the corresponding transfer transition bridge and the corresponding load carrier 19.

[0056] When working, the fully loaded mine truck 6 drives into the load carrier 19 of the mine bottom lifting conveying unit 81, runs along the mine bottom lifting conveying unit 81 to the top, drives into the rotary table 84 through the transfer transition bridge 15, turns after the rotation of the rotary table 84, drives into the rotary table 84 on the back side of the middle section lifting conveying unit 82 along the step plane 71, turns after the rotation of the rotary table 84, drives into the load carrier 19 of the middle section lifting conveying unit 82 through the transfer transition bridge 15, runs along the middle section lifting conveying unit 82 to the top, drives into the rotary table 84 through the transfer transition bridge 15, turns after the rotation of the rotary table 84, drives into the rotary table 84 on the back side of the mine top lifting conveying unit 83 along the step plane 71, turns after the rotation of the rotary table 84, drives into the load carrier 19 of the mine top lifting conveying unit 83 through the transfer transition bridge 15, and then lifts to the top of the mine from the load carrier 19 of the mine top lifting conveying unit 83. After unloading at the designated location, the mine truck 6 returns to the load carrier 19 of the mine top lifting conveying unit 83, and then returns to the mine bottom in the reverse order of the mine top lifting conveying unit 83, the middle section lifting conveying unit 82, and the mine bottom lifting conveying unit 81. After driving out of the load carrier 19, the mine truck 6 continues to load the ore at the loading point.

[0057] The series connection lifting conveying system 8 can double the lifting conveying height of the ore, and meet the requirements of the ore lifting conveying of the super-deep pit open-pit mine. The rotary table 84 is provided to realize the direct turning of the mine truck 6 on the rotary table 84, solve the problem that the mine truck 6 is difficult to turn due to the narrow step plane 71, and improve the driving efficiency and safety of the mine truck 6 between the two sets of series connection basic single-line systems 200.

[0058] As shown in the figure, the parallel lifting conveying system 9 includes a left lifting conveying unit 91, a middle lifting conveying unit 92, and a right lifting conveying unit 93. The left lifting conveying unit 91 and the right lifting conveying unit 93 are each a set, Figure 7 As shown in the figure, the parallel lifting conveying system 9 includes a left lifting conveying unit 91, a middle lifting conveying unit 92, and a right lifting conveying unit 93. The left lifting conveying unit 91 and the right lifting conveying unit 93 are each a set,​Figure 7 In the embodiment shown, the middle lifting and conveying unit 92 is one set, but the number of the middle lifting and conveying unit 92 is greater than or equal to 0. The left lifting and conveying unit 91, the middle lifting and conveying unit 92, and the right lifting and conveying unit 93 are all the basic single-line system 200, which are arranged side by side. The left lifting and conveying unit 91, the middle lifting and conveying unit 92, and the right lifting and conveying unit 93 work independently and do not affect each other during conveying, and can work simultaneously or individually. The parallel lifting and conveying system 9 can multiply the lifting and conveying capacity of the ore, and meet the requirements of the ore conveying of the super-large open-pit mine.

[0059] As shown in the figure, Figure 8 The series-parallel lifting and conveying system 10 includes a left series lifting and conveying unit 101, a middle series lifting and conveying unit 102, and a right series lifting and conveying unit 103. The left series lifting and conveying unit 101 and the right series lifting and conveying unit 103 are each one set, Figure 8 In the embodiment shown, the middle series lifting and conveying unit 102 is one set, but the number of the middle series lifting and conveying unit 102 is greater than or equal to 0. The left series lifting and conveying unit 101, the middle series lifting and conveying unit 102, and the right series lifting and conveying unit 103 are all the series lifting and conveying system 8. Multiple series lifting and conveying systems 8 are arranged side by side. During conveying, the left series lifting and conveying unit 101, the middle series lifting and conveying unit 102, and the right series lifting and conveying unit 103 work independently and do not affect each other, and can work simultaneously or individually. Specifically, multiple full-load mine trucks 6 at the bottom of the pit can simultaneously or respectively drive into the carrying trolley 19 of the ore bottom lifting and conveying unit 81 at the bottom of the different series lifting and conveying units. Each series lifting and conveying unit independently performs its lifting task. Taking the left series lifting and conveying unit 101 as an example, the full-load mine truck 6 passes through the ore bottom lifting and conveying unit 81, the middle lifting and conveying unit 82 (if any), and the ore top lifting and conveying unit 83 in sequence according to the aforementioned series system, and uses the rotary table 84 arranged on the same level plane 71 to complete the turning and switching between adjacent basic single-line systems 200, and is finally lifted to the top of the mine. The middle series lifting and conveying unit 102 and the right series lifting and conveying unit 103 synchronously perform the same lifting process as the left series lifting and conveying unit 101. Since the three units are physically and in the control system, they can run simultaneously, thereby tripling (or more, depending on the number of parallel connections) the number of mine trucks 6 from the bottom of the pit to the top of the mine, greatly improving the overall conveying capacity of the system. The term "series lifting and conveying unit" refers to the left series lifting and conveying unit 101, the middle series lifting and conveying unit 102, and the right series lifting and conveying unit 103.

[0060] The series-parallel lifting conveying system 10 can not only multiply the lifting conveying height of the ore, but also multiply the lifting conveying amount of the ore, and can simultaneously meet the ore lifting conveying requirements of the super-high and super-large open-pit mine.

[0061] In the description of the present specification, it is necessary to explain that, unless explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A single-line hoisting and conveying system for open-pit mine trucks using steeply inclined track, characterized in that: Includes a basic single-line system (200), which includes a lifting conveyor 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 (16), a transfer bridge (15), and a transport trolley (19) for transporting mining trucks (6). There are two sets of track beams (16). The two sets of track beams (16) are symmetrically erected on both sides of the center line of the hoisting and conveying line (1), and each set of track beams (16) extends upward at an incline from the bottom of the mine pit to the top of the mine pit; each set of track beams (16) is equipped with a track; the transport trolley (19) is moved along the extension direction of the track beams (16) and is mounted on the track. The winding device (11) includes a left winding drum (111) and a right winding drum (114), which are connected in series to form a double winding drum via a winding drum coupling (113); the spiral grooves on the left winding drum (111) and the right winding drum (114) have opposite rotation directions; The wire rope (12) is set between the drum device (11) and the transport trolley (19); the drum device (11) is connected to the main drive system (2), and the main drive system (2) drives the drum device (11) to rotate, so that the wire rope pulls the transport trolley (19) to run along the corresponding track; The steps (7) formed by mining include a step plane (71) and a step slope (72) connecting two adjacent step planes (71); the transfer bridge (15) is installed at the top of the track beam (16), and its upper surface is flush with the step plane (71) of the step (7) where the top of the track beam (16) is located. When the transport trolley (19) runs to the extreme position at the top of the track, a passage is formed by the transfer bridge (15), the upper surface of the transport trolley (19) and the step plane (71) at the top of the track beam (16); a downward recessed groove is provided on the step plane (71) corresponding to the bottom end of the track beam (16), and the track beam (16) extends into the groove. When the transport trolley (19) runs to the extreme position at the bottom end of the track, the upper surface of the transport trolley (19) is flush with the step plane (71) corresponding to the bottom end of the track beam (16); Two sets of movable pulley blocks (18) are arranged on both sides of the transport trolley (19); after the transport trolley (19) is installed on the track, the two sets of movable pulley blocks (18) are symmetrical about the center line of the lifting and conveying line (1); two sets of balance pulley blocks (14) are set diagonally above the top of the track beam (16), the two sets of balance pulley blocks (14) are symmetrical about the center line of the lifting and conveying line (1), and a tension pulley block (20) is set between the two sets of balance pulley blocks (14); two sets of redirecting pulley blocks (13) are set between the top of the track beam (16) and the drum device (11), the two sets of redirecting pulley blocks (13) are symmetrical about the center line of the lifting and conveying line (1); one end of the wire rope (12) is fixed to the left drum (111), and the other end is wound around After passing through the left-side redirecting pulley block (13), it extends downward along the track direction to the left-side movable pulley block (18) of the transport trolley (19). After passing through the left-side movable pulley block (18), 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), tensioning pulley block (20), and right-side balance pulley block (14) in sequence, and then extends downward along the track direction to the right-side movable pulley block (18) of the transport trolley (19). After passing through the right-side movable pulley block (18) of the transport trolley (19), it extends upward along the track direction to the right-side redirecting pulley block (13), and then passes through the right-side redirecting pulley block (13) to the right drum (114) and is fixed to the right drum (114), forming a wire rope winding system. The track beam (16) is supported by a support device (17) and placed on the step plane (71) of the steps (7) formed by mining. The support device (17) is located near the outside of the step plane (71).

2. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to claim 1, characterized in that: The left drum (111) is provided with a disc brake (112) at its end; the right drum (114) is provided with a disc brake (115) at its end.

3. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to any one of claims 1 to 2, 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).

4. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to claim 3, characterized in that: The drum device (11) is connected to the output shaft of the main reducer (26) via the drum device coupling (3).

5. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to claim 3, characterized in that: A slow drive system (4) is also provided; the slow drive system (4) includes a connecting shaft two (41), a slow reducer (43) and a slow drive motor (45); the slow drive motor (45) is connected to the input shaft of the slow reducer (43) through a motor coupling (44); a 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).

6. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to claim 3, characterized in that: An open gear pair (5) is provided between the drum device (11) and the main reducer (26); the open gear pair (5) is composed of a small gear (51) and a large gear (52) meshing; the small gear (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).

7. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to any one of claims 1 to 2, characterized in that: For the series lifting and conveying system (8), multiple sets of the basic single-line system (200) are arranged in a staggered and series manner along the inclined direction of the step (7). In the series lifting and conveying system (8), two adjacent sets of basic single-line systems (200) are transferred on the same level step plane (71). On the step plane (71) where the transfer is made, each set of basic single-line system (200) is provided with a turntable (84) on the side of the step slope (72) of the upper step (7). The top surface of the turntable (84) is flush with the step plane (71) of the step (7).

8. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to claim 7, characterized in that: The series-parallel lifting and conveying system (10) is composed of multiple sets of the series lifting and conveying systems (8) arranged side by side along the step plane (71) of the step (7).

9. The single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks according to any one of claims 1 to 2, characterized in that: The parallel lifting and conveying system (9) is composed of multiple sets of the basic single-line system (200) arranged in parallel along the step plane (71) of the step (7).

10. A conveying method using the single-line hoisting and conveying system for open-pit mine steep-angle track mining trucks as described in claim 3, characterized in that, Includes the following steps: First, the fully loaded mining truck (6) drives into the upper surface of the transport vehicle (19) from the step plane (71) at the bottom of the mine pit; Next, the main motor (21) of the main drive system (2) starts to rotate in the forward direction, lifting the conveyor line (1) to lift the trolley (19) and the fully loaded mining truck (6) to the top of the mine. The fully loaded mining truck (6) then drives off the trolley (19) through the transfer bridge (15) and transports the ore to the designated location. Then, the unloaded empty mining truck (6) drives directly onto the transport trolley (19) via the transfer bridge (15). The main motor (21) starts to reverse, lifting the conveyor line (1) and lowering the transport trolley (19) and the empty mining truck (6) along the track to the bottom of the mine pit. The empty mining truck (6) then drives out from the transport trolley (19) to the designated location to continue loading ore.

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