Large-inclination track mine truck double-line lifting and conveying system and conveying method

Abstract

The application discloses an open-pit mine large-inclination track mine truck double-line lifting and conveying system and a conveying method, belongs to the field of ore transportation, and aims to quickly, efficiently and safely transport ores. The system comprises a left lifting and conveying line, a right lifting and conveying line and a main driving system; the left lifting and conveying line and the right lifting and conveying line are symmetrically arranged side by side and have the same structure; the left steel wire rope is arranged in an up-down mode with the right steel wire rope on the left and right winding drum devices in an up-down mode with the right steel wire rope on the left and right winding drum devices, the left winding drum device and the right winding drum device are synchronously driven to rotate by the main driving system, the steel wire rope pulls a load carrier to carry a mine truck to run along corresponding tracks. Through the double-line arrangement, the conveying capacity is improved, and the lifting energy consumption is only used for lifting ores; through the method of "ores taking an elevator", the quick, safe, efficient ore transportation is guaranteed, 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 mines can be realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ore transportation, and in particular to a double-line lifting and conveying system for large-inclination track mine trucks in an open-pit mine and a conveying method. BACKGROUND

[0002] At present, the conveying of ores in open-pit mines at home and abroad usually adopts three transportation modes of mine trucks, belt conveyors and railways, or a combination of the three modes. These transportation modes have their own characteristics: the belt conveyor 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 (≤15 degrees, generally 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 in open-pit mines at present.

[0003] With the increasing depth of open-pit mining, the belt conveyor and railway transportation are limited by the conveying inclination angle and cannot meet the conveying requirements of large inclination angles, 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 slope 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 mine 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-inclination track mine truck efficient conveying system for open-pit mines 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 open-pit mine large-inclination track mine truck double-line lifting conveying system, comprising a basic double-line system, the basic double-line system comprising a left lifting conveying line, a right lifting conveying line and a main driving system; the left lifting conveying line and the right lifting conveying line are structurally identical and are arranged side by side and symmetrically to the center line of the whole conveying system; the left lifting conveying line comprises a left winding drum device, a left steel wire rope, a left track beam, a left mine truck overpass and a left carrying trolley for carrying a mine truck; the left track beam has two sets, the two sets of left track beams are symmetrically erected on the two sides of the center line of the left lifting conveying line, and each set of left track beam extends upwardly and obliquely from the bottom of the mine pit to the top of the mine pit; a track is arranged on each set of left track beam; the left carrying trolley is movably arranged on the track along the extending direction of the left track beam; the left winding drum device comprises a left winding drum one and a left winding drum two, the left winding drum one and the left winding drum two are connected in series through a left winding drum coupling to form a double winding drum; the rotation directions of the spiral grooves on the left winding drum one and the left winding drum two are opposite; the left steel wire rope is arranged between the left winding drum device and the left carrying trolley.

[0006] The right lifting conveying line comprises a right winding drum device, a right steel wire rope, a right track beam, a right mine truck overpass and a right carrying trolley; the right track beam has two sets, the two sets of right track beams are symmetrically erected on the two sides of the right lifting conveying line, and each set of right track beam extends upwardly and obliquely from the bottom of the mine pit to the top of the mine pit; a track is arranged on each set of right track beam; the right carrying trolley is movably arranged on the track along the extending direction of the right track beam; the right winding drum device comprises a right winding drum one and a right winding drum two, the right winding drum one and the right winding drum two are connected in series through a right winding drum coupling to form a double winding drum; the rotation directions of the spiral grooves on the right winding drum one and the right winding drum two are opposite; the right steel wire rope is arranged between the right winding drum device and the right carrying trolley.

[0007] The mine truck overpass is installed at the top end of the corresponding track beam, and the upper surface thereof is flush with the step plane at the top end of the corresponding track beam; when the carrying trolley runs to the limit position at the top end of the track, the upper surface of the carrying trolley forms a passing channel with the mine truck overpass and the step plane at the top end; a downwardly recessed groove is arranged on the step plane at the bottom end of the corresponding track beam, and the track beam extends into the groove; when the carrying trolley runs to the limit position at the bottom end of the track, the upper surface of the carrying trolley is flush with the step plane at the bottom end.

[0008] The out rope positions of the left steel wire rope on the left winding drum device and the right steel wire rope on the right winding drum device are arranged oppositely, one above the other; the left winding drum device and the right winding drum device are connected with the main driving system, and the left winding drum device and the right winding drum device are driven to rotate synchronously by the main driving system, so that the steel wire rope pulls the corresponding carrying trolley to run along the corresponding track.

[0009] Further, two sets of left moving pulley groups are arranged on the left carrying trolley; after the left carrying trolley is installed to the track, the two sets of left moving pulley groups are symmetrical to the center line of the left lifting conveying line; two sets of left balance pulley groups are arranged obliquely above the top end of the left track beam, the two sets of left balance pulley groups are symmetrical to the center line of the left lifting conveying line, and a set of left tension pulley group is arranged in the middle of the two sets of left balance pulley groups; two sets of left direction-changing pulley groups are arranged between the top end of the left track beam and the left winding drum device, and the two sets of left direction-changing pulley groups are symmetrical to the center line of the left lifting conveying line; one end of the left steel wire rope is fixed to the left winding drum one, the other end of the left steel wire rope extends downward along the track direction to the left moving pulley group on the left side of the left carrying trolley after winding through the left direction-changing pulley group on the left side, extends upward along the track direction to the left balance pulley group on the left side after winding through the left moving pulley group on the left side, and then extends downward along the track direction to the left moving pulley group on the right side of the left carrying trolley after winding through the left balance pulley group on the left side, the left tension pulley group on the left side and the left balance pulley group on the right side, extends upward along the track direction to the right direction-changing pulley group on the right side after winding through the left moving pulley group on the right side of the left carrying trolley, and extends to the left winding drum two and is fixed to the left winding drum two after winding through the right direction-changing pulley group on the right side.

[0010] Two sets of right moving pulley groups are arranged on the right carrying trolley; after the right carrying trolley is installed to the track, the two sets of right moving pulley groups are symmetrical to the center line of the right lifting conveying line; two sets of right balance pulley groups are arranged obliquely above the top end of the right track beam, the two sets of right balance pulley groups are symmetrical to the center line of the right lifting conveying line, and a set of right tension pulley group is arranged in the middle of the two sets of right balance pulley groups; two sets of right direction-changing pulley groups are arranged between the top end of the right track beam and the right winding drum device, and the two sets of right direction-changing pulley groups are symmetrical to the center line of the right lifting conveying line; one end of the right steel wire rope is fixed to the right winding drum one, the other end of the right steel wire rope extends downward along the track direction to the right moving pulley group on the right side of the right carrying trolley after winding through the right direction-changing pulley group on the right side, extends upward along the track direction to the right balance pulley group on the right side after winding through the right moving pulley group on the right side, and then extends downward along the track direction to the right moving pulley group on the left side of the right carrying trolley after winding through the right balance pulley group on the right side, the right tension pulley group on the right side and the right balance pulley group on the left side, extends upward along the track direction to the left direction-changing pulley group on the left side after winding through the right moving pulley group on the left side of the right carrying trolley, and extends to the right winding drum two and is fixed to the right winding drum two after winding through the left direction-changing pulley group on the left side.

[0011] Further, a left disc brake one is installed at the end of the left winding drum one; a left disc brake two is installed at the end of the left winding drum two; a right disc brake one is installed at the end of the right winding drum one; and a right disc brake two is installed at the end of the right winding drum two.

[0012] Further, the step formed by the mining includes a step plane and a step slope connecting the step planes of two adjacent steps; the left track beam is erected on the step plane of the step formed by the mining through the left support device; and the right track beam is erected on the step plane of the step formed by the mining through the right support device.

[0013] Further, the left support device and the right support device are arranged close to the outside of the step plane.

[0014] Further, the main drive system includes a main motor, a left transmission system and a right transmission system; the left transmission system includes a left normally closed clutch, a left connecting shaft one, a left coupling one, a left main reducer and a left coupling two; the left normally closed clutch is connected with the left output shaft of the main motor at the right end and connected with the left connecting shaft one at the left end, and is in the closed state under normal working conditions to ensure the safety of the whole system; the left end of the left coupling one is provided with a brake wheel and connected with the input shaft of the left main reducer at the right side, and the right end is connected with the left connecting shaft one; the right end of the left coupling two is provided with a brake wheel and connected with the input shaft of the left main reducer at the left side, and the left end is connected with the left connecting shaft two; the left coupling one is provided with a left block brake one, and the left coupling two is provided with a left block brake two.

[0015] The right transmission system includes a right normally closed clutch, a right connecting shaft one, a right coupling one, a right main reducer and a right coupling two; the right normally closed clutch is connected with the right output shaft of the main motor at the left end and connected with the right connecting shaft one at the right end, and is in the closed state under normal working conditions to ensure the safety of the whole system; the right end of the right coupling one is provided with a brake wheel and connected with the input shaft of the right main reducer at the left side, and the left end is connected with the right connecting shaft one; the left end of the right coupling two is provided with a brake wheel and connected with the input shaft of the right main reducer at the right side, and the right end is connected with the right connecting shaft two; the right coupling one is provided with a right block brake one, and the right coupling two is provided with a right block brake two.

[0016] Further, the left winding drum device is connected with the output shaft of the left main reducer through the left winding drum device coupling; and the right winding drum device is connected with the output shaft of the right main reducer through the right winding drum device coupling.

[0017] Further, a left slow speed drive system and a right slow speed drive system are further arranged. The left slow speed drive system includes a left connecting shaft two, a left slow speed reducer and a left slow speed motor; the left slow speed motor and the input shaft of the left slow speed reducer are connected through a left coupling three; the output shaft of the left slow speed reducer is connected with the left end of the left normally open clutch, and the left normally open clutch is in the disengaged state under normal working conditions; the left end of the left connecting shaft two is connected with the right end of the left normally open clutch, and the right end is connected with the left end of the left coupling two of the left main reducer at the left side.

[0018] The right slow drive system comprises a right connecting shaft two, a right slow reducer and a right slow motor; the right slow motor is connected with the input shaft of the right slow reducer through a right shaft coupling three; the output shaft of the right slow reducer is connected with the right end of the right normally open clutch, and the right normally open clutch is in a disengaged state under normal working conditions; the right end of the right connecting shaft two is connected with the left end of the right normally open clutch, and the left end thereof is connected with the right end of the right shaft coupling two on the right side of the right main reducer.

[0019] Further, a set of open gear pairs is arranged between the left drum device and the left main reducer and between the right drum device and the right main reducer respectively; the open gear pair is composed of a pinion and a gear; the pinion is mounted on the output shaft of the left main reducer and the right main reducer respectively, and the gear is mounted on the end face of the left drum two and the right drum two respectively.

[0020] Further, for the series connection lifting conveying system, a plurality of sets of the basic double-line system are arranged in series connection by being staggered along the inclined direction of the mine steps; adjacent two sets of the basic double-line system in the series connection lifting conveying system are connected on the same step plane; on the step plane at the connection position, the left lifting conveying line and the right lifting conveying line of each set of the basic double-line system are respectively provided with a rotary table near the side close to the upper step slope; the top surface of the rotary table is flush with the step plane, and is used for turning and transferring the mine truck between the upper and lower adjacent basic double-line systems.

[0021] Further, for the series-parallel connection lifting conveying system, a plurality of sets of the series connection lifting conveying system are arranged in parallel along the step plane of the mine steps.

[0022] Further, for the parallel connection lifting conveying system, a plurality of sets of the basic double-line system are arranged in parallel along the step plane of the mine steps.

[0023] The conveying method of the double-line lifting conveying system of the large-inclination track mine truck in the open-pit mine comprises the following steps:

[0024] Firstly, the full-load mine truck drives into the left carrying trolley of the left lifting conveying line at the bottom of the mine, and the empty-load return mine truck drives into the right carrying trolley of the right lifting conveying line at the top of the mine;

[0025] Then, the main motor is started to rotate forward, the left lifting conveying line lifts the left carrying trolley and the full-load mine truck to the top of the mine, and the right lifting conveying line lowers the right carrying trolley and the empty-load return mine truck to the bottom of the mine;

[0026] Then, the full-load mine truck reaches the top of the mine and drives out of the left carrying trolley, and the empty-load return mine truck reaches the bottom of the mine and drives out of the right carrying trolley;

[0027] Next, the next full load mine truck enters the right lifting conveying line right carrier at the bottom of the mine, and the next empty return mine truck enters the left lifting conveying line left carrier at the top of the mine;

[0028] Finally, the main motor starts to reverse, the left lifting conveying line lowers the left carrier and the empty return mine truck, and the right lifting conveying line lifts the right carrier and the full load mine truck.

[0029] The beneficial effects of the present application are: the present application uses the winding drum device to rotate and wind the steel wire rope to pull the carrier to carry the mine truck to run along the track erected from the mine pit to the top of the mine to realize ore transportation, solves the problems of long transportation mileage, high climbing, low transportation efficiency, poor economy, and the problems of the rapid growth of consumables such as spare parts, fuel, tires, and the problems of the large increase of cost and serious environmental pollution, and solves the problems of large damage of the electric mine truck to the battery, the problem of being not conducive to the promotion of the mine, and the problem of building a green mine.

[0030] Through the double-line setting of the left lifting conveying line and the right lifting conveying line, not only the conveying capacity is doubled compared with single line, but also the carrier carrying the empty mine truck in the two lines balances the weight of the carrier carrying the full load mine truck itself, the output power of the motor is only the power required for lifting the ore, which greatly reduces the lifting conveying cost. And the carrier and the mine truck do not need to transfer the ore, which further saves time. And the carrier only plays the role of carrying the mine truck, and its structure is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the open-pit mine large-inclination track mine truck lifting conveying system disclosed by the present application.

[0032] Figure 2 It is a partial enlarged view of A in Figure 1

[0033] Figure 3 It is a partial enlarged view of the open gear pair arranged at the shaft coupling of the main drive system and the winding drum device.

[0034] Figure 4 It is a schematic diagram of the series connection of three sets of basic double-line systems.

[0035] Figure 5 It is a schematic diagram of the parallel connection of three sets of basic double-line systems.

[0036] Figure 6 It is a schematic diagram of the series-parallel connection of nine sets of basic double-line systems.

[0037] Figure 7 It is a cross-sectional view of the rotary table in Figure 4 ​​

[0038] Fig. 1 - left hoisting conveying line, 11 - left drum device, 111 - left drum one, 112 - left disc brake one, 113 - left drum coupling, 114 - left drum two, 115 - left disc brake two, 12 - left steel wire rope, 13 - left redirection sheave block, 14 - left balance sheave block, 15 - left mine truck overpass, 16 - left movable sheave block, 17 - left load carrying trolley, 18 - left track beam, 19 - left support device, 20 - left tension sheave block, 2 - right hoisting conveying line, 21 - right drum device, 211 - right drum one, 212 - right disc brake one, 213 - right drum coupling, 214 - right drum two, 215 - right disc brake two, 22 - right steel wire rope, 23 - right redirection sheave block, 24 - right balance sheave block, 25 - right mine truck overpass, 26 - right movable sheave block, 27 - right load carrying trolley, 28 - right track beam, 29 - right support device, 30 - right tension sheave block, 3 - main drive system, 31 - main motor, 32 - left transmission system, 321 - left normally closed clutch, 322 - left connecting shaft one, 323 - left coupling one, 325 - left main reducer, 326 - left coupling two, 33 - right transmission system, 331 - right normally closed clutch, 332 - right connecting shaft one, 333 - right coupling one, 335 - right main reducer, 336 - right coupling two, 4 - left slow speed drive system, 41 - left connecting shaft two, 42 - left normally open clutch, 43 - left slow speed reducer, 44 - left coupling three, 45 - left slow speed motor, 5 - right slow speed drive system, 51 - right connecting shaft two, 52 - right normally open clutch, 53 - right slow speed reducer, 54 - right coupling three, 55 - right slow speed motor, 6 - left drum device coupling, 7 - right drum device coupling, 8 - open gear pair, 81 - pinion, 82 - gear, 9 - step, 91 - step plane, 92 - step slope, 10 - mine truck, 100 - series hoisting conveying system, 1001 - mine bottom hoisting conveying unit, 1002 - middle section hoisting conveying unit, 1003 - mine top hoisting conveying unit, 1004 - rotating platform, 110 - parallel hoisting conveying system, 1101 - left side hoisting conveying unit one, 1102 - middle hoisting conveying unit one, 1103 - right side hoisting conveying unit one, 120 - series-parallel hoisting conveying system, 1201 - left side hoisting conveying unit two, 1202 - middle hoisting conveying unit two, 1203 - right side hoisting conveying unit two, 200 - basic double line system. DETAILED DESCRIPTION

[0039] The present application is further described below in conjunction with the accompanying drawings and examples:

[0040] The disclosed open-pit mine large-inclination track mine truck double-line hoisting conveying system comprises a basic double line system 200, the basic double line system 200 is as shown in Figure 1 andFigure 2 As shown, it comprises a left lifting conveying line 1, a right lifting conveying line 2 and a main driving system 3.

[0041] The left lifting conveying line 1 comprises a left winding drum device 11, a left steel wire rope 12, a left track beam 18, a left truck overpass 15 and a left carrying trolley 17 for carrying the mine truck 10; the left track beam 18 has two sets, and the two sets of left track beams 18 are symmetrically erected on both sides of the center line of the left lifting conveying line 1 and each set of left track beams 18 extends upwardly from the bottom of the mine to the top of the mine; each set of left track beams 18 is provided with a track; the left carrying trolley 17 is movably arranged on the track along the extension direction of the left track beam 18. The left winding drum device 11 comprises a left winding drum one 111 and a left winding drum two 114, and the left winding drum one 111 and the left winding drum two 114 are connected in series through a left winding drum coupling 113 to form a double winding drum; the rotation directions of the spiral grooves on the left winding drum one 111 and the left winding drum two 114 are opposite. The end of the left winding drum one 111 is provided with a left disc brake one 112, and the brake disc of the left disc brake one 112 is directly mounted on the end of the left winding drum one 111 and matches with the brake block of the left disc brake one 112 to form a safety braking system of the left winding drum one 111. The end of the left winding drum two 114 is provided with a left disc brake two 115, and the brake disc of the left disc brake two 115 is directly mounted on the end of the left winding drum two 114 and matches with the brake block of the left disc brake two 115 to form a safety braking system of the left winding drum two 114.

[0042] The left steel wire rope 12 is arranged between the left winding drum device 11 and the left carrying trolley 17, the left winding drum device 11 is connected with the main driving system 3 through the left winding drum device coupling 6, the left winding drum device 11 is driven to rotate by the main driving system 3, the left steel wire rope 12 is pulled to drive the left carrying trolley 17 to move along the track on the left track beam 18. Specifically, two sets of left movable pulley groups 16 are arranged on both sides of the left carrying trolley 17; after the left carrying trolley 17 is mounted on the track, the two sets of left movable pulley groups 16 are symmetric to the center line of the left lifting conveying line 1; two sets of left balance pulley groups 14 are arranged obliquely above the top end of the left track beam 18, and the two sets of left balance pulley groups 14 are symmetric to the center line of the left lifting conveying line 1; two sets of left redirecting pulley groups 13 are arranged between the top end of the left track beam 18 and the left winding drum device 11, and the two sets of left redirecting pulley groups 13 are symmetric to the center line of the left lifting conveying line 1.

[0043] Further, a left tension pulley set 20 can be arranged between the two left balance pulley sets 14. The left steel wire rope 12 is fixed at one end to the left drum one 111, and at the other end extends downward along the track direction after passing through the left change-over pulley set 13 on the left side to the left movable pulley set 16 on the left side of the left carrier trolley 17, extends upward along the track direction after passing through the left movable pulley set 16 on the left side of the left carrier trolley 17 to the left balance pulley set 14 on the left side, and then extends downward along the track direction after passing through the left balance pulley set 14 on the left side, the left tension pulley set 20 and the left balance pulley set 14 on the right side to the left movable pulley set 16 on the right side of the left carrier trolley 17, extends upward along the track direction after passing through the left movable pulley set 16 on the right side of the left carrier trolley 17 to the left change-over pulley set 13 on the right side, and then extends to the left drum two 114 after passing through the left change-over pulley set 13 on the right side and is fixed to the left drum two 114, to form a left winding system of the steel wire rope. It should be noted that if one end of the left steel wire rope 12 is fixed to the left end of the left drum one 111, the other end is fixed to the right end of the left drum two 114; if one end of the left steel wire rope 12 is fixed to the right end of the left drum one 111, the other end is fixed to the left end of the left drum two 114; and one end of the left steel wire rope 12 is led out from above the left drum one 111, and the other end is led out from above the left drum two 114; if one end of the left steel wire rope 12 is led out from below the left drum one 111, the other end is led out from below the left drum two 114.

[0044] When mining, multiple levels of steps 9 are formed from the bottom of the mine to the top of the mine, and each level of steps 9 formed by mining includes a step plane 91 and a step inclined surface 92 connecting two adjacent step planes 91. The left mine truck overpass 15 is installed at the top end of the left track beam 18, and the upper surface thereof is flush with the step plane 91 of the top of the mine, and a passing channel is formed by the left mine truck overpass 15, the upper surface of the left carrier trolley 17 and the step plane 91 of the top of the mine when the left carrier trolley 17 runs to the limit position at the top end of the track. After the left carrier trolley 17 carries the fully loaded mine truck 10 to the limit position at the top end of the track, the mine truck 10 can drive onto the step plane 91 of the top of the mine from the left mine truck overpass 15.

[0045] A recess is arranged in the step plane 91 at the bottom of the mine, and the left track beam 18 extends into the recess, and the upper surface of the left carrier trolley 17 is flush with the step plane 91 at the bottom of the mine when the left carrier trolley 17 runs to the limit position at the bottom end of the track, and at this time, the fully loaded mine truck 10 can drive onto the left carrier trolley 17 from the step plane 91 at the bottom of the mine, and then be lifted to the top of the mine along the track with the left carrier trolley 17.

[0046] The step 9 formed by the mining includes a step plane 91 and a step slope 92 connecting two adjacent step planes 91. The left support device 19 is installed on the step plane 91 of each step 9 formed by the mining and close to the step slope 92 of the same step, is located below and connected with the left track beam 18, and is used for fixing and supporting the left track beam 18 and transmitting the load.

[0047] The left load trolley 17 is provided with wheels matched with the tracks of the left track beam 18, runs along the tracks on the left track beam 18 under the traction of the left steel wire rope 12, realizes the lifting and lowering of the left load trolley 17, and thus realizes the lifting and lowering of the ore.

[0048] The right lifting conveying line 2 adopts the same structure as the left lifting conveying line 1, and is parallel to the left lifting conveying line 1 and symmetric to the center line of the whole conveying system.

[0049] Specifically, the right lifting conveying line 2 includes a right drum device 21, a right steel wire rope 22, a right track beam 28 and a right load trolley 27. The right track beam 28 has two sets, and the two sets of right track beams 28 are symmetrically erected on the center of the corresponding right lifting conveying line 2 on both sides, and each set of right track beams 28 extends upwardly and obliquely from the bottom of the mine to the top of the mine. Each set of right track beams 28 is provided with tracks. The right load trolley 27 is movably arranged on the tracks along the extension direction of the right track beam 28. The right drum device 21 includes a right drum one 211 and a right drum two 214, and the right drum one 211 and the right drum two 214 are connected in series through a right drum shaft coupling 213 to form a double drum. The rotation directions of the spiral grooves on the right drum one 211 and the right drum two 214 are opposite. The end of the right drum one 211 is provided with a right disc brake one 212, and the brake disc and the brake block of the right disc brake one 212 are matched to form a safety brake system of the right drum one 211. The end of the right drum two 214 is provided with a right disc brake two 215, and the brake disc and the brake block of the right disc brake two 215 are matched to form a safety brake system of the right drum two 214.

[0050] The right steel wire rope 22 is arranged between the right winding drum device 21 and the right carrier 27, the right winding drum device 21 is connected with the main driving system 3 through the right winding drum device coupling 7, the right winding drum device 21 is driven to rotate by the main driving system 3, the right steel wire rope 22 is pulled to drive the right carrier 27 to move along the track on the right track beam 28. Specifically, two sets of right movable pulley groups 26 are arranged on both sides of the right carrier 27; after the right carrier 27 is installed on the track, the two sets of right movable pulley groups 26 are symmetrical to the center line of the right lifting conveying line 2; two sets of right balance pulley groups 24 are arranged obliquely above the top end of the right track beam 28, and the two sets of right balance pulley groups 24 are symmetrical to the center line of the right lifting conveying line 2; two sets of right redirecting pulley groups 23 are arranged between the top end of the right track beam 28 and the right winding drum device 21, and the two sets of right redirecting pulley groups 23 are symmetrical to the center line of the right lifting conveying line 2.

[0051] Further, a right tension pulley group 30 is arranged between the two sets of right balance pulley groups 24. One end of the right steel wire rope 22 is fixed to the right winding drum one 211, and the other end extends downward along the track direction to the right movable pulley group 26 on the right side of the right carrier 27 after passing through the right redirecting pulley group 23 on the right side, extends upward along the track direction to the right balance pulley group 24 on the right side after passing through the right movable pulley group 26 on the right side, extends downward along the track direction to the right movable pulley group 26 on the left side of the right carrier 27 after passing through the right balance pulley group 24 on the right side, the right tension pulley group 30 and the right balance pulley group 24 on the left side in turn, extends upward to the right movable pulley group 26 on the left side after passing through the right movable pulley group 26 on the left side, extends upward to the right redirecting pulley group 23 on the left side, and extends to the right winding drum two 214 after passing through the right redirecting pulley group 23 on the left side and is fixed to the right winding drum two 214, to form a steel wire rope winding system. It should be noted that if one end of the right steel wire rope 22 is fixed to the left end of the right winding drum one 211, the other end is fixed to the right end of the right winding drum two 214; if one end of the right steel wire rope 22 is fixed to the right end of the right winding drum one 211, the other end is fixed to the left end of the right winding drum two 214; and one end of the right steel wire rope 22 is led out from above the right winding drum one 211, and the other end is led out from above the right winding drum two 214; if one end of the right steel wire rope 22 is led out from below the right winding drum one 211, the other end is led out from below the right winding drum two 214.

[0052] The right mine truck bridge 25 is installed at the top end of the right track beam 28, and the upper surface thereof is flush with the step plane 91 of the mine roof, when the right carrier 27 runs to the limit position of the top end of the track, a passing channel is formed by the right mine truck bridge 25, the upper surface of the right carrier 27 and the step plane 91 of the mine roof. After the right carrier 27 carries the full load of the mine truck 10 to the limit position of the top end of the track, the mine truck 10 can drive onto the step plane 91 of the mine roof from the right mine truck bridge 25.

[0053] The step plane 91 of the mine bottom is provided with a downward recess, the right track beam 28 extends into the recess, when the right carrying trolley 27 runs to the track bottom end limit position, the upper surface of the right carrying trolley 27 is flush with the step plane 91 of the mine bottom, at this time, the full load mine truck 10 can drive into the right carrying trolley 27 from the step plane 91 of the mine bottom, and then be lifted to the mine top along with the right carrying trolley 27.

[0054] The right support device 29 is installed on the step plane 91 of each step 9 formed by the mine exploitation and close to the step slope 92 side of the same step, which is located below and connected with the right track beam 28, for fixing and supporting the right track beam 28 and transmitting the load.

[0055] The right carrying trolley 27 is provided with wheels matched with the track of the right track beam 28, under the traction of the right steel wire rope 22, the right carrying trolley 27 runs along the track on the right track beam 28, realizes the lifting and lowering of the right carrying trolley 27, and thus realizes the lifting and lowering of the ore.

[0056] The out rope position of the left steel wire rope 12 on the left drum device 11 and the out rope position of the right steel wire rope 22 on the right drum device 21 are arranged oppositely, i.e. when the left steel wire rope 12 is led out from below the two drums of the left drum device 11, the right steel wire rope 22 is led out from above the two drums of the right drum device 21; when the left steel wire rope 12 is led out from above the two drums of the left drum device 11, the right steel wire rope 22 is led out from below the two drums of the right drum device 21.

[0057] The left drum device 11 and the right drum device 21 are connected with the main drive system 3, and the left drum device 11 and the right drum device 21 are driven to rotate synchronously by the main drive system 3, so that the left lifting conveying line 1, the right lifting conveying line 2 and the main drive system 3 form two lifting conveying lines.

[0058] Because the left wire rope 12 of the left hoisting conveyor line 1 and the right wire rope 22 of the right hoisting conveyor line 2 are positioned one above the other on the corresponding drum device, the left carrying trolley 17 and the right carrying trolley 27 run in opposite directions. That is, when the left hoisting conveyor line 1 lifts, the right hoisting conveyor line 2 lowers, and vice versa. When a fully loaded mining truck 10 enters the left carrying trolley 17 located at the bottom of the mine on the left hoisting conveyor line 1, an empty returning mining truck 10 enters the right carrying trolley 27 located at the top of the mine on the right hoisting conveyor line 2. The main motor 31 starts rotating forward, and the left hoisting conveyor line 1 lifts the left carrying trolley 17 and the fully loaded mining truck 10, while the right hoisting conveyor line 2 lowers the right carrying trolley 27 and the empty returning mining truck 10. When the fully loaded mining truck 10 reaches the top of the mine and exits the left transport trolley 17, and the empty returning mining truck 10 reaches the bottom of the mine and exits the right transport trolley 27, the next fully loaded mining truck 10 drives onto the right transport trolley 27 located at the bottom of the mine on the right hoisting conveyor line 2. At the same time, the next empty returning mining truck 10 drives onto the left transport trolley 17 located at the top of the mine on the left hoisting conveyor line 1. Then the main motor 31 starts and reverses. The left hoisting conveyor line 1 lowers the left transport trolley 17 and the empty returning mining truck 10, while the right hoisting conveyor line 2 raises the right transport trolley 27 and the fully loaded mining truck 10. In this way, one fully loaded mining truck 10 is raised while one empty returning mining truck 10 is lowered. Each cycle will raise two truckloads of ore. Compared to the single-line conveying method, not only is the lifting efficiency doubled, but when the left lifting conveyor line 1 lifts the left transport trolley 17 and the mining truck 10, the weight of the right transport trolley 27 and the mining truck 10 on the right lifting conveyor line 2 becomes its counterweight, balancing the weight of the left transport trolley 17 and the mining truck 10 on the left lifting conveyor line 1. This ensures that the actual output power of the main motor 31 of the main drive system 3 is only the power required for lifting the ore, greatly reducing the cost of ore lifting and conveying. Furthermore, the transport trolley directly carries the mining truck 10, eliminating the need for ore transfer between the transport trolley and the mining truck, saving ore transfer time. The transport trolley only serves to carry the mining truck 10, employing methods such as... Figure 1 The triangular platform shown can be used, and its structure can be simplified. The transport trolley described in this specification is a collective term for the left transport trolley 17 and the right transport trolley 27.

[0059] The main drive system 3 includes a main motor 31, a left transmission system 32, and a right transmission system 33.

[0060] The left transmission system 32 comprises a left normally closed clutch 321, a left connecting shaft 322, a left coupling 323, a left main reducer 325 and a left coupling 326; the left end of the left normally closed clutch 321 is connected with the left output shaft of the main motor 31, and the right end is connected with the left connecting shaft 322, which are in the closed state under normal working conditions, ensuring the safety of the whole system; the left end of the left coupling 323 is connected with the input shaft on the right side of the left main reducer 325, and the right end is connected with the left connecting shaft 322; the right end of the left coupling 326 is connected with the input shaft on the left side of the left main reducer 325, and the left end is connected with the left connecting shaft 41. The left block brake 1 is arranged on the left coupling 323, and the brake wheel of the left block brake 1 is installed on the left coupling 323, and the brake block of the left block brake 1 is matched with the brake wheel. The left block brake 2 is arranged on the left coupling 326, and the brake wheel of the left block brake 2 is installed on the left coupling 326, and the brake block of the left block brake 2 is matched with the brake wheel. Thus, the double working brake system of the left transmission system 32 is composed, and the redundant brake design ensures the safe operation of the whole transmission system.

[0061] The right transmission system 33 adopts the same structure as the left transmission system 32, and the right transmission system 33 and the left transmission system 32 are symmetrical about the center line of the whole conveying system. The right transmission system 33 comprises a right normally closed clutch 331, a right connecting shaft 332, a right coupling 333, a right main reducer 335 and a right coupling 336; the left end of the right normally closed clutch 331 is connected with the right output shaft of the main motor 31, and the right end is connected with the right connecting shaft 332, which are in the closed state under normal working conditions, ensuring the safety of the whole system; the right end of the right coupling 333 is connected with the input shaft on the left side of the right main reducer 335, and the left end is connected with the right connecting shaft 332; the left end of the right coupling 336 is connected with the input shaft on the right side of the right main reducer 335, and the right end is connected with the right connecting shaft 51. The right block brake 1 is arranged on the right coupling 333, and the brake wheel of the right block brake 1 is installed on the right coupling 333, and the brake block of the right block brake 1 is matched with the brake wheel. The right block brake 2 is arranged on the right coupling 336, and the brake wheel of the right block brake 2 is installed on the right coupling 336, and the brake block of the right block brake 2 is matched with the brake wheel. Thus, the double working brake system of the left transmission system 32 is composed, and the redundant brake design ensures the safe operation of the whole transmission system.

[0062] The left output shaft of the main motor 31 is connected with the left transmission system 32 through a left normally closed clutch 321, and the right output shaft is connected with the right transmission system 33 through a right normally closed clutch 331. The left drum device 11 is connected with the output shaft of the left main reducer 325 through a left drum device coupling 6. The right drum device 21 is connected with the output shaft of the right main reducer 335 through a right drum device coupling 7.

[0063] Thus, the left lifting and conveying line 1 and the right lifting and conveying line 2 can be simultaneously driven by the main motor 31. When the transmission ratio cannot meet the speed requirement of lifting and descending, a set of open gear pair 8 can be arranged to replace the left drum device coupling 6 and the right drum device coupling 7 respectively at the left drum device coupling 6 between the left transmission system 32 of the main drive system 3 and the left lifting and conveying line 1 and at the right drum device coupling 7 between the right transmission system 33 and the right lifting and conveying line 2. As shown in Figure 3 The open gear pair 8 is composed of a pinion 81 and a gear 82. The open gear pairs 8 of the left lifting and conveying line 1 and the right lifting and conveying line 2 are symmetrically arranged. The pinion 81 is installed on the output shaft of the left main reducer 325 and the right main reducer 335, and the gear 82 is installed on the end face of the left drum two 114 and the right drum two 214.

[0064] In order to facilitate system debugging and maintenance, a left slow drive system 4 and a right slow drive system 5 are also provided. The left slow drive system 4 comprises a left connecting shaft two 41, a left slow reducer 43 and a left slow motor 45. The left slow motor 45 and the input shaft of the left slow reducer 43 are connected through a left coupling three 44. The output shaft of the left slow reducer 43 is connected with the left end of a left normally open clutch 42, which is in a disengaged state under normal working conditions. The left end of the left connecting shaft two 41 is connected with the right end of the left normally open clutch 42, and the right end is connected with the left end of a left coupling two 326 on the left side of the left main reducer 325. The left slow drive system 4 is used for slow driving of the left lifting and conveying line 1.

[0065] Similarly, the right slow drive system 5 comprises a right connecting shaft two 51, a right slow reducer 53 and a right slow motor 55. The right slow motor 55 and the input shaft of the right slow reducer 53 are connected through a right coupling three 54. The output shaft of the right slow reducer 53 is connected with the right end of a right normally open clutch 52, which is in a disengaged state under normal working conditions. The right end of the right connecting shaft two 51 is connected with the left end of the right normally open clutch 52, and the left end is connected with the right end of a right coupling two 336 on the right side of the right main reducer 335. The right slow drive system 5 is used for slow driving of the right lifting and conveying line 2.

[0066] When the system is first installed in the user site, the safety braking system composed of the left disc brake one 112 and the left disc brake two 115 of the left lifting conveying line 1 enters the safety braking state, disconnects the left normally closed clutch 321 of the main driving system 3, and closes the left normally open clutch 42 of the left slow driving system 4, so that the left lifting conveying line 1 is in the slow driving state under the driving of the main driving system 3 and the left slow driving system 4, and the left lifting conveying line 1 can be debugged alone; similarly, the safety braking system composed of the right disc brake one 212 and the right disc brake two 215 of the right lifting conveying line 2 enters the safety braking state, disconnects the right normally closed clutch 331 of the main driving system 3, and closes the right normally open clutch 52 of the right slow driving system 5, so that the right lifting conveying line 2 is in the slow driving state under the driving of the main driving system 3 and the right slow driving system 5, and the right lifting conveying line 2 can be debugged alone. After the above debugging is completed, the working state debugging can be performed, and the working debugging of the left lifting conveying line 1 is performed first. The left normally open clutch 42 of the left slow driving system 4 is in the normally open state, and the right normally closed clutch 331 of the main driving system 3 is disconnected, so that the main motor 31, the left driving system 32, the left drum device coupling 6 and the left lifting conveying line 1 form a No. 1 lifting conveying line, and the No. 1 lifting conveying line can be debugged under the conditions of empty load and load. Then, the working debugging of the right lifting conveying line 2 is performed in the same way. The right normally open clutch 52 of the right slow driving system 5 is in the normally open state, and the left normally closed clutch 321 of the main driving system 3 is disconnected, so that the main motor 31, the right driving system 33, the right drum device coupling 7 and the right lifting conveying line 2 form a No. 2 lifting conveying line, and the No. 2 lifting conveying line can be debugged under the conditions of empty load and load. Finally, the debugging and test running of the whole system are performed. The left normally closed clutch 321 and the right normally closed clutch 331 of the main driving system 3 are in the normally closed working state, the left lifting conveying line 1, the right lifting conveying line 2 and the main driving system 3 form a working lifting conveying system, and the whole system is debugged, and the empty load and load test running are realized.

[0067] When the left lifting conveying line 1 needs maintenance and repair due to failure or problems of the lifting conveying system, the safety braking system composed of the left disc brake one 112 and the left disc brake two 115 of the left lifting conveying line 1 enters the safety braking state, disconnects the left normally closed clutch 321 of the main drive system 3, and closes the left normally open clutch 42 of the left slow drive system 4, so that the left lifting conveying line 1, the main drive system 3 and the left slow drive system 4 are in the slow maintenance and repair state, and maintenance and repair can be performed. The right lifting conveying line 2 can work normally when the left lifting conveying line 1 needs maintenance and repair, but only one mine truck 10 can be lifted or lowered, and the lifting efficiency is reduced by half. Similarly, when the right lifting conveying line 2 needs maintenance and repair due to failure or problems of the lifting conveying system, the safety braking system composed of the right disc brake one 212 and the right disc brake two 215 of the right lifting conveying line 2 enters the safety braking state, disconnects the right normally closed clutch 331 of the main drive system 3, and closes the right normally open clutch 52 of the right slow drive system 5, so that the right lifting conveying line 2, the main drive system 3 and the right slow drive system 5 are in the slow maintenance and repair state, and maintenance and repair can be performed. The left lifting conveying line 1 can work normally when the right lifting conveying line 2 needs maintenance and repair, but only one mine truck 10 can be lifted or lowered, and the lifting efficiency is reduced by half.

[0068] In the left lifting conveying line 1, the steel wire rope winding system composed of the left steel wire rope 12, the left change direction pulley group 13, the left balance pulley group 14 and the left movable pulley group 16, and in the right lifting conveying line 2, the steel wire rope winding system composed of the right steel wire rope 22, the right change direction pulley group 23, the right balance pulley group 24 and the right movable pulley group 26 are provided with a steel wire rope broken wire real-time monitoring and early warning protection system, which realizes real-time monitoring and alarm of steel wire rope broken wire and ensures the safety and reliability of the system.

[0069] The disclosed lifting conveying system can be designed in three installation forms of fixed installation, semi-mobile and mobile. The fixed installation refers to a welding or foundation bolt fixing connection of a part connected with the foundation in the lifting conveying system through a foundation embedded plate and foundation bolt on the foundation. The installation form is safe and reliable, but has high cost, difficulty in disassembly and reassembly, and long time consumption, and is mainly used for open-pit mines that do not need to be moved after installation or have long moving interval. The semi-mobile refers to that the part connected with the foundation in the lifting conveying system is directly placed on the pretreated ground, and the foundation part itself does not have a self-moving mechanism and power. A slide shoe, front and rear wedge or tire structure is usually designed on the foundation part, and the moving is realized through external force traction or pushing. The installation form 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 that need to be moved relatively frequently (usually moved once every half year to one year) after installation. The mobile refers to that the part connected with the foundation in the lifting conveying system itself is designed with a moving mechanism and has a power system, such as a track walking mechanism and a tire driving system. The moving is convenient and fast, but the manufacturing cost is high, and the mobile is mainly used for open-pit mines that need to be moved frequently (usually moved once every one month to two months) after installation.

[0070] The left rail beam 18 and the right rail beam 28 are erected in the air by the left support device 19 and the right support device 29, so that the distance from the lower edge of the left rail beam 18 and the right rail beam 28 to the step plane 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.

[0071] The lifting conveying system uses the conveying method to replace 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 slipping and road subsidence of the mine truck in the large rain and snow weather, and usually needs to be shut down. In this way, the safety, working time and operation efficiency of the system are effectively improved.

[0072] Further, in the design of the new mine or the reconstruction of the old mine, the climbing section of the ore conveying is designed or the old mine is reconstructed by using the lifting conveying technology, the original fuel mine truck is replaced by the electric mine truck, the electric mine truck is popularized and applied in the mine, the transportation cost is greatly reduced, the pollution emission of the mine is reduced, and the development of the mine towards green and environmental protection is realized.

[0073] 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 that the intelligent conveying of the whole mine ore can be realized.

[0074] It should be noted that in this paper, the basic double-line system 200 is a basic conveying unit, and the open-pit large-inclination track mine truck double-line hoisting and conveying system in this paper can be a set of the basic double-line system 200, which extends from the bottom of the pit to the top of the pit, and the above describes a set of the basic double-line system 200 and its conveying method. Of course, the open-pit large-inclination track mine truck double-line hoisting and conveying system can also be a series hoisting and conveying system 100, a parallel hoisting and conveying system 110 or a series-parallel hoisting and conveying system 120 composed of multiple sets of the basic double-line system 200. Specifically as follows:

[0075] As shown in Figure 4 , the series hoisting and conveying system 100 includes a pit bottom hoisting and conveying unit 1001, a middle section hoisting and conveying unit 1002 and a pit top hoisting and conveying unit 1003. The pit bottom hoisting and conveying unit 1001 is located at the bottom of the pit, and the pit top hoisting and conveying unit 1003 is located at the top of the pit. Both the pit bottom hoisting and conveying unit 1001 and the pit top hoisting and conveying unit 1003 are a set. The number of the middle section hoisting and conveying unit 1002 is greater than or equal to 0. They are all basic double-line systems 200 and are arranged in series and staggered along the inclined direction of the mine steps.

[0076] The adjacent two sets of the basic double-line system 200 in the series hoisting and conveying system 100 are connected on the same step plane 91. On the step plane 91 for connection, the left hoisting and conveying line 1 and the right hoisting and conveying line 2 of each set of the basic double-line system 200 are respectively provided with a rotary table 1004 on one side of the step inclined surface 92 of the upper step 9, as shown in Figure 7 , the top surface of the rotary table 1004 is flush with the step plane 91 of the step 9.

[0077] When the mine truck 10 transfers between the adjacent two sets of the basic double-line system 200, the mine truck 10 first drives out of the current set of the basic double-line system 200 from the corresponding mine truck overpass of the load carrier and drives onto the corresponding rotary table 1004, turns and drives away from the current basic double-line system 200; then drives into the corresponding rotary table 1004 of the next set of the basic double-line system 200, turns and centers the corresponding mine truck overpass through the rotary table 1004, and then drives into the corresponding load carrier from the corresponding mine truck overpass.

[0078] When working, the full load mine truck drives into the carrying trolley of the mine bottom lifting and conveying unit 1001, is lifted by the mine bottom lifting and conveying unit 1001, the middle section lifting and conveying unit 1002 and the mine top lifting and conveying unit 1003 in turn to the mine top, drives out from the carrying trolley of the mine top lifting and conveying unit 1003, drives to the designated place to unload, returns to drive into the carrying trolley of the mine top lifting and conveying unit 1003 again, and returns to the mine bottom by the reverse order of the mine top lifting and conveying unit 1003, the middle section lifting and conveying unit 1002 and the mine bottom lifting and conveying unit 1001, drives out of the carrying trolley and continues to load the mine at the loading point. The series lifting and conveying system 100 can multiply the lifting and conveying height of the ore, and meet the lifting and conveying requirements of the super deep pit open-pit mine.

[0079] As shown in Figure 5 , the parallel lifting and conveying system 110 includes a left lifting and conveying unit 1101, a middle lifting and conveying unit 1102 and a right lifting and conveying unit 1103; the left lifting and conveying unit 1101 and the right lifting and conveying unit 1103 are each a set, the number of the middle lifting and conveying unit 1102 is greater than or equal to 0, and the left lifting and conveying unit 1101, the right lifting and conveying unit 1103 and the middle lifting and conveying unit 1102 are each a basic double-line system 200, which are arranged side by side with each other. When working, the left lifting and conveying unit 1101, the middle lifting and conveying unit 1102 and the right lifting and conveying unit 1103 work independently and do not affect each other, and can work simultaneously or individually. The parallel lifting and conveying system can multiply the lifting and conveying capacity of the ore, and meet the ore conveying requirements of the super large open-pit mine.

[0080] As shown in Figure 6 , the series and parallel lifting and conveying system 120 includes a left lifting and conveying unit 1201, a middle lifting and conveying unit 1202 and a right lifting and conveying unit 1203; the left lifting and conveying unit 1201 and the right lifting and conveying unit 1203 are each a set, the number of the middle lifting and conveying unit 1202 is greater than or equal to 0, and the left lifting and conveying unit 1201, the middle lifting and conveying unit 1202 and the right lifting and conveying unit 1203 are each the series lifting and conveying system 100. Multiple sets of the series lifting and conveying system 100 are arranged side by side with each other. When working, the left lifting and conveying unit 1201, the middle lifting and conveying unit 1202 and the right lifting and conveying unit 1203 work independently and do not affect each other, and can work simultaneously or individually. The series and parallel lifting and conveying system not only can multiply the lifting and conveying height of the ore, but also can multiply the lifting and conveying capacity of the ore, and can meet the ore lifting and conveying requirements of the super high and super large open-pit mine at the same time.

[0081] In the description of the present specification, it is necessary to explain that the terms "mount", "provided with", "connected" and the like should be understood in a broad sense unless otherwise specifically defined and limited, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or 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.

[0082] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A double-track hoisting and conveying system for open-pit mine trucks with steeply inclined tracks, characterized in that: This includes a basic dual-track system, which comprises a left lifting conveyor line, a right lifting conveyor line, and a main drive system. The left and right lifting conveyor lines have the same structure, are arranged side by side and symmetrically with respect to the center line of the entire conveying system; The left hoisting conveyor line includes a left drum device, a left wire rope, a left track beam, a left mine truck overpass, and a left transport trolley for transporting mine trucks. There are two sets of left track beams, which are symmetrically erected on both sides of the center line of the left hoisting conveyor line, and each set of left track beams extends upwards at an incline from the bottom to the top of the mine pit. Each set of left track beams is equipped with a track. The left transport trolley is movable on the track along the extension direction of the left track beam. The left drum device includes a left drum one and a left drum two, which are connected in series to form a double drum via a left drum coupling. The spiral grooves on the left drum one and the left drum two rotate in opposite directions. The left wire rope is located between the left drum device and the left transport trolley. The right hoisting conveyor line includes a right drum device, a right wire rope, a right track beam, a right mine car overpass, and a right transport trolley. There are two sets of right track beams, symmetrically erected on both sides of the right hoisting conveyor line, with each set extending upwards at an incline from the bottom to the top of the mine pit. Each set of right track beams is equipped with a track. The right transport trolley moves along the track along the extension direction of the right track beam. The right drum device includes right drum one and right drum two, connected in series via a right drum coupling to form a double drum. The spiral grooves on right drum one and right drum two rotate in opposite directions. The right wire rope is positioned between the right drum device and the right transport trolley. The mining truck overpass is installed at the top of the corresponding track beam, and its upper surface is flush with the step plane at the top of the corresponding track beam. When the transport trolley runs to the limit position at the top of the track, the upper surface of the transport trolley forms a passage with the mining truck overpass and the top step plane. A downward recessed groove is provided on the step plane at the bottom of the corresponding track beam, and the track beam extends into the groove. When the transport trolley runs to the limit position at the bottom of the track, the upper surface of the transport trolley is flush with the bottom step plane. The left wire rope exiting the left drum and the right wire rope exiting the right drum are set oppositely, one up and one down. The left and right drums are connected to the main drive system, which drives the left and right drums to rotate synchronously, so that the wire ropes pull the corresponding transport trolleys along the corresponding tracks. Two sets of left movable pulley blocks are arranged on the left transport trolley, with the two sets of left movable pulley blocks respectively located on both sides of the left transport trolley. After the left transport trolley is installed on the track, the two sets of left movable pulley blocks are symmetrical to the center line of the left lifting and conveying line. Two sets of left balance pulley blocks are installed diagonally above the top of the left track beam, symmetrical to the center line of the left lifting and conveying line. A left tensioning pulley block is installed between the two sets of left balance pulley blocks. Two sets of left redirecting pulley blocks are installed between the top of the left track beam and the left drum device, symmetrical to the center line of the left lifting and conveying line. One end of the left wire rope is fixed. At the left drum one, the other end extends downward along the track direction after passing the left redirecting pulley block on the left side to the left moving pulley block on the left side of the left transport trolley. After passing the left moving pulley block on the left side, it extends upward along the track direction to the left balance pulley block on the left side. Then, it passes the left balance pulley block on the left side, the left tension pulley block, and the left balance pulley block on the right side in sequence, and extends downward along the track direction to the left moving pulley block on the right side of the left transport trolley. After passing the left moving pulley block on the right side of the left transport trolley, it extends upward along the track direction to the left redirecting pulley block on the right side, and then extends downward along the track direction after passing the left redirecting pulley block on the right side to the left drum two and is fixed to the left drum two. Two sets of right-moving pulley blocks are arranged on the right transport trolley, with the two sets of right-moving pulley blocks respectively located on both sides of the right transport trolley; after the right transport trolley is installed on the track, the two sets of right-moving pulley blocks are symmetrical to the center line of the right lifting and conveying line; two sets of right-balancing pulley blocks are installed diagonally above the top of the right track beam, the two sets of right-balancing pulley blocks are symmetrical to the center line of the right lifting and conveying line, and a right tensioning pulley block is installed between the two sets of right-balancing pulley blocks; two sets of right-directing pulley blocks are installed between the top of the right track beam and the right drum device, the two sets of right-directing pulley blocks are symmetrical to the center line of the right lifting and conveying line; the right wire rope... One end is fixed to the right drum one, and the other end passes through the right redirecting pulley block on the right side and extends downward along the track direction to the right moving pulley block on the right side of the right transport trolley. After passing through the right moving pulley block on the right side, it extends upward along the track direction to the right balance pulley block on the right side. After passing through the right balance pulley block on the right side, the right tensioning pulley block and the right balance pulley block on the left side in sequence, it extends downward along the track direction to the right moving pulley block on the left side of the right transport trolley. After passing through the right moving pulley block on the left side of the right transport trolley, it extends upward to the right redirecting pulley block on the left side, and after passing through the right redirecting pulley block on the left side, it extends to the right drum two and is fixed to the right drum two. The steps formed by mining include the step plane and the step ramp connecting two adjacent step planes; the left track beam is erected on the step plane of the steps formed by mining via the left support device; the right track beam is erected on the step plane of the steps formed by mining via the right support device; Both the left and right support devices are located close to the outer side of the step plane.

2. The double-track hoisting and conveying system for open-pit mine trucks with steep inclines as described in claim 1, characterized in that: Left disc brake 1 is installed at the end of left drum 1; left disc brake 2 is installed at the end of left drum 2. Right disc brake 1 is installed at the end of right drum 1; right disc brake 2 is installed at the end of right drum 2.

3. The double-track hoisting and conveying system for open-pit mine steep-angle rails for mining trucks according to any one of claims 1 to 2, characterized in that: The main drive system includes a main motor, a left drive system, and a right drive system; The left transmission system includes a left normally closed clutch, a left connecting shaft one, a left coupling one, a left main reducer, and a left coupling two. The right end of the left normally closed clutch is connected to the left output shaft of the main motor, and its left end is connected to the left connecting shaft one. Under normal operating conditions, both are in a closed state to ensure the safety of the entire system. The left end of the left coupling one is equipped with a brake wheel and is connected to the right input shaft of the left main reducer, and its right end is connected to the left connecting shaft one. The right end of the left coupling two is equipped with a brake wheel and is connected to the left input shaft of the left main reducer, and its left end is connected to the left connecting shaft two. The left coupling one is equipped with a left block brake one, and the left coupling two is equipped with a left block brake two. The right-hand drive system includes a right normally closed clutch, a right connecting shaft one, a right coupling one, a right main reducer, and a right coupling two. The left end of the right normally closed clutch is connected to the right output shaft of the main motor, and its right end is connected to the right connecting shaft one. Under normal operating conditions, both are in a closed state to ensure the safety of the entire system. The right end of the right coupling one is equipped with a brake wheel and is connected to the left input shaft of the right main reducer, while its left end is connected to the right connecting shaft one. The left end of the right coupling two is equipped with a brake wheel and is connected to the right input shaft of the right main reducer, while its right end is connected to the right connecting shaft two. The right coupling one is equipped with a right block brake one, and the right coupling two is equipped with a right block brake two.

4. The double-track hoisting and conveying system for open-pit mine trucks with steep inclines as described in claim 3, characterized in that: The left drum assembly is connected to the output shaft of the left main reducer via a left drum assembly coupling; The right drum assembly is connected to the output shaft of the right main reducer via the right drum assembly coupling.

5. The double-track hoisting and conveying system for open-pit mine trucks with steep inclines as described in claim 3, characterized in that: It is also equipped with a left slow drive system and a right slow drive system; The left slow drive system includes a left connecting shaft 2, a left slow reducer, and a left slow motor; the left slow motor and the input shaft of the left slow reducer are connected in three phases via a left coupling; the output shaft of the left slow reducer is connected to the left end of the left normally open clutch, which is in a disengaged state under normal operating conditions; the left end of the left connecting shaft 2 is connected to the right end of the left normally open clutch, and its right end is connected to the left end of the left coupling 2 on the left side of the left main reducer. The right slow drive system includes a second right connecting shaft, a right slow reducer, and a right slow motor. The right slow motor and the input shaft of the right slow reducer are connected in three phases via a right coupling. The output shaft of the right slow reducer is connected to the right end of the right normally open clutch, which is in a disengaged state under normal operating conditions. The right end of the second right connecting shaft is connected to the left end of the right normally open clutch, and its left end is connected to the right end of the second right coupling on the right side of the right main reducer.

6. The double-track hoisting and conveying system for open-pit mine trucks with steep inclines according to claim 3, characterized in that: An open gear pair is provided between the left drum device and the left main reducer, and between the right drum device and the right main reducer. The open gear pair consists of a pinion and a gear. A pinion is installed on the output shaft of the left main reducer and the right main reducer, and a gear is installed on the end face of the left drum and the right drum.

7. The double-track hoisting and conveying system for open-pit mine trucks with steep inclines as described in claim 1, characterized in that: The series hoisting and conveying system consists of multiple sets of basic double-line systems arranged in a staggered and connected manner along the inclined direction of the mine bench. In the series hoisting and conveying system, adjacent sets of basic double-line systems are transferred on the same level bench plane. At the bench plane of the transfer point, a turntable is set on the side of the left and right hoisting and conveying lines of each set of basic double-line systems that is closest to the inclined surface of the upper bench. The top surface of the turntable is flush with the bench plane and is used for mine trucks to turn and transfer between adjacent basic double-line systems.

8. The double-track hoisting and conveying system for open-pit mine trucks with steep inclines according to claim 7, characterized in that: It is a series-parallel hoisting and conveying system, consisting of multiple series hoisting and conveying systems arranged side by side along the plane of the mine benches.

9. The double-track hoisting and conveying system for open-pit mine trucks with steep inclines according to claim 1, characterized in that: It is a parallel hoisting and conveying system, consisting of multiple basic double-line systems arranged side by side along the plane of the mine benches.

10. A conveying method using the double-track hoisting and conveying system for open-pit mine trucks with steep inclines as described in claim 3, characterized in that, Includes the following steps: First, fully loaded mining trucks drive into the left hoisting conveyor line at the left transport trolley located at the bottom of the mine; empty returning mining trucks drive into the right hoisting conveyor line at the right transport trolley located at the top of the mine. Next, the main motor starts rotating in the forward direction, the left hoisting conveyor line lifts the left carrying trolley and the fully loaded mining truck to the top of the mine, and at the same time the right hoisting conveyor line lowers the right carrying trolley and the empty returning mining truck to the bottom of the mine; Then, the fully loaded mining trucks arrive at the top of the mine and drive out of the left transport trolley, while the empty returning mining trucks arrive at the bottom of the mine and drive out of the right transport trolley. Next, the next fully loaded mining truck drives into the right hoisting conveyor line on the right transport trolley located at the bottom of the mine, while the next empty returning mining truck drives into the left hoisting conveyor line on the left transport trolley located at the top of the mine. Finally, the main motor starts and reverses, the left hoisting conveyor line lowers the left carrying trolley and the empty returning mining truck, while the right hoisting conveyor line raises the right carrying trolley and the fully loaded mining truck.

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