A system and method for simultaneously hoisting and unloading multiple materials in a single skip inclined shaft.

Abstract

A system and method for simultaneously lifting and unloading multiple materials using a single skip shaft are disclosed. The system comprises a material distribution chamber with a reciprocating material distribution car located below a skip shaft. Below the material distribution chamber, a three-way chute is constructed, including a vertical chute and two symmetrically positioned inclined chutes on either side of the vertical chute. A feeder is located below the storage section at the bottom of each chute, and a mine car is located below the feeder. Interconnected inspection runways connect the storage sections of each chute. An unloading chamber is located above the material distribution chamber, with an unloading shaft at its bottom leading to the material distribution chamber. Skips are located within the skip shaft. The system includes a first inspection shaft and a second inspection shaft. The material distribution chamber is connected to the skip shaft via a skip shaft passage. Three material distribution channels are arranged side-by-side on the material distribution car, each corresponding to one of the three chute entrances. This invention enables the simultaneous lifting and unloading of multiple materials using a single skip shaft.

Description

Technical Field

[0001] This invention belongs to the field of mining engineering technology, specifically relating to a method for hoisting and unloading ore in an inclined shaft skip. Background Technology

[0002] The inclined shaft skip hoisting method is one of the main methods for hoisting and unloading ore and waste rock in underground mines. Most existing inclined shaft skip hoisting and unloading systems typically employ a single vertical chute configuration. The ore hoisted up by the skip along the inclined shaft can only be unloaded to a single receiving position via this single chute. This arrangement of inclined shaft skips with a single vertical chute for unloading ore has significant drawbacks. A single inclined shaft can only hoist and unload a single type of ore to a designated position via a single chute. It cannot simultaneously hoist and unload other types of ore or waste rock. Otherwise, unloading through the same chute would mix various ores and waste rock, which does not meet production requirements. Therefore, the unloaded material types are limited. If a mine needs to simultaneously hoist and unload multiple materials, it requires the construction of separate inclined shafts for hoisting and unloading different types of ore or waste rock, along with corresponding unloading chutes. This results in large construction investments, high operating costs, and complex production organization and management, making it difficult to meet the requirements of efficient and economical separate mining and transportation in underground mines. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to meet the requirements of efficient and economical separate mining and transportation in underground mines, and to provide a system and method that can simultaneously hoist and unload multiple materials in a single skip shaft.

[0004] The technical solution adopted in this invention is as follows: This system enables the simultaneous hoisting and unloading of multiple materials from a single skip shaft. The system comprises a distribution chamber located below the upper part of the skip shaft, housing a distribution car within the chamber. Below the distribution chamber, a three-way chute is constructed. This three-way chute consists of a vertical chute arranged in a three-pronged pattern and two symmetrically positioned inclined chutes on either side of the vertical chute. The bottom of each vertical and inclined chute has a storage section. Interconnected inspection tunnels connect the storage sections of the vertical and inclined chutes. Below each storage section is a feeder chamber containing a feeder, with the bottom of the storage section communicating with the feeder chamber. Below the feeder is a ore storage area. The ore loading level roadway; an unloading chamber is located above the distribution chamber in the skip inclined shaft, and an unloading shaft leading to the distribution chamber is located at the bottom of the unloading chamber. A skip that can move back and forth is installed in the skip inclined shaft; a distribution car installation chamber is located next to the distribution chamber; the distribution car is connected to the push-pull rod of a hydraulic device located in the distribution car installation chamber, and moves back and forth through the action of the push-pull rod; a vertical first inspection shaft is opened from the distribution car installation chamber down through the inspection level roadway to the ore loading level roadway, and a vertical second inspection shaft is set between the inspection level roadway and the ore loading level roadway. The inspection level roadway is connected to the first inspection shaft and the second inspection shaft. The distribution chamber is connected to the skip inclined shaft through the skip inclined shaft passage. The material distribution vehicle has three material distribution channels arranged side by side, and the discharge ports at the bottom of the three material distribution channels correspond to the entrances of the vertical chute and the two inclined chutes, respectively.

[0005] Furthermore, ladders are installed in both the first and second inspection wells.

[0006] Furthermore, the inclination angle of the inclined chute is 52°, and the spacing between adjacent chute surrounding rock layers is >8.5m.

[0007] The method for simultaneously lifting and unloading multiple materials using a single skip inclined shaft, as described in this invention, involves first activating a hydraulic device to move the material distribution car via push-pull rods, aligning the material distribution channel of the material distribution car with the unloading shaft in real time. Then, the skip lifts different types of underground materials along the skip inclined shaft to the unloading chamber, where they are unloaded into different material distribution channels on the material distribution car. These materials then enter vertical or inclined chutes via these channels. Each of the three material distribution channels receives different materials and guides them into different chutes. The materials falling through each chute enter their respective storage sections, are then fed by a feeder to the mine cars below, and finally transported out by the mine cars.

[0008] Compared with the prior art, the present invention has the following beneficial effects: This invention employs a three-pronged ore pass in conjunction with a distribution car, combined with a single skip shaft. This allows a single skip shaft to lift and transport different types of underground ore or waste rock according to site requirements, unloading them into different distribution boxes. These boxes then enter different ore passes and are delivered to ore cars at different locations for transport. This achieves the efficiency of simultaneously lifting and unloading multiple materials from a single skip shaft. Compared to the traditional arrangement of a single skip shaft with a single ore pass, this invention reduces construction investment by 39% and operating costs by 13%. The process of lifting and unloading multiple materials with a single skip shaft facilitates centralized production management and meets the requirements of efficient and economical separate mining and transportation in underground mines. Attached Figure Description

[0009] Figure 1 This is a front view schematic diagram of the system described in this invention, which enables a single skip inclined shaft to simultaneously lift and unload multiple materials. Figure 2 for Figure 1 Section II-II view; Figure 3 for Figure 2 Section III-III view; Figure 4 for Figure 1 Section IV-IV; Figure 5 for Figure 1 VV cross-sectional diagram; Figure 6 This is a schematic diagram of the front sectional view of the material distribution vehicle, that is... Figure 7 CC section diagram in the image; Figure 7 for Figure 6 AA section diagram; Figure 8 for Figure 6 BB cross-sectional view.

[0010] In the diagram, 1—skip inclined shaft; 2—unloading chamber; 3—unloading shaft; 4—material distribution car; 4a—material distribution channel; 4b—frame; 4c—frame chassis; 4d—track wheel assembly; 5—material distribution chamber; 6—push-pull rod; 7—skip inclined shaft channel; 8—material distribution car installation chamber; 9—first inspection shaft; 10—vertical chute; 11—inclined chute; 12—chute storage section; 13—feeder chamber; 14—loading level roadway; 15—second inspection shaft; 16—inspection level roadway; 17—feeder; 18—skip; 19—mine car; 20—hydraulic device control room. Detailed Implementation

[0011] The invention will now be further described in conjunction with the accompanying drawings.

[0012] like Figures 1-5As shown, a system is provided that can simultaneously lift and unload multiple materials in a single skip shaft. The system consists of a skip shaft 1, a material distribution chamber 5 located below the upper part of the skip shaft, a material distribution car 4 located in the material distribution chamber, and a three-pronged chute located below the ground level of the material distribution chamber. Figure 1 This is a front view schematic diagram of the system described in this invention, which enables the simultaneous lifting and unloading of multiple materials from a single skip inclined shaft. Figure 3 and Figure 5 The diagram shows a cross-sectional view (II) taken along the center of the unloading shaft. The three-pronged chute consists of a vertical chute 11 and two symmetrically positioned inclined chutes 10 on either side of the vertical chute. The bottom of both the vertical and inclined chutes has a storage section 12, the cross-sectional area of ​​which is larger than the cross-sectional area of ​​the chute itself, to facilitate the storage of materials falling from the chute. In this embodiment, the inclined chute 10 has an inclination angle of 52°, and the distance between the surrounding rock layers between adjacent chutes (i.e., the vertical chute and the inclined chute) is greater than 8.5m, ensuring both smooth material flow and system safety.

[0013] Interconnected inspection levelways 16 are provided between the storage sections of the vertical and inclined chutes. A feeder chamber 13 is located below each storage section, housing a feeder 17. A vertical passage connects the bottom of the storage section to the feeder chamber, allowing stored materials to automatically fall into the feeder 17. The feeder 17 is a vibrating feeder, with its trough inclined downwards towards the discharge end for smooth discharge. A loading levelway 14 is located below the feeder, housing mine cars 19. Rail transport is typically used in the loading levelway, with mine cars transported along the rails once full. An unloading chamber 2 is located above the distribution chamber in the skip inclined shaft 1. An unloading shaft 3 leads from the bottom of the unloading chamber to the distribution chamber. A reciprocating skip 18 is installed in the skip inclined shaft. The skip shaft 1 and its installed skip 18 are common inclined shaft skip hoisting systems in existing technology, and will not be described in detail here. A material distribution car installation chamber 8 is located next to the material distribution chamber for installing and maintaining the material distribution car. Typically, the space (height and width) of the material distribution car installation chamber 8 is larger than that of the material distribution chamber 5 to ensure sufficient space for installation and maintenance operations. The floor of the material distribution car installation chamber is flush with the floor of the material distribution chamber and is connected by rails to facilitate the movement of the material distribution car. A hydraulic device is installed in the material distribution car installation chamber. The push-pull rod 6 of the hydraulic cylinder of the hydraulic device is horizontally positioned and connected to the material distribution car, allowing the material distribution car to move back and forth through the reciprocating motion of the push-pull rod. If the material distribution car needs to be moved to the installation chamber for maintenance, the hydraulic device and push-pull rod must first be removed, and then the material distribution car must be moved to the installation chamber along the rails using a hand-operated hoist. The front end of the push-pull rod is connected to the frame chassis 4c of the material distribution car. A vertical first inspection shaft 9 extends downwards from the material distribution car installation chamber through the inspection level roadway to the ore loading level roadway. A vertical second inspection shaft 15 is located between the inspection level roadway and the ore loading level roadway. The inspection level roadway connects to both the first and second inspection shafts. The material distribution chamber 5 is connected to the skip inclined shaft 1 via the skip inclined shaft passage 7. Ladders are installed in both the first and second inspection shafts, serving as passageways and safety exits for routine inspection and maintenance work within the ore pass.

[0014] The material distribution vehicle 4 is a mobile device used to divert different types of ore or waste rock unloaded from the unloading well 3. For example... Figures 6-8As shown, the material distribution car 4 has three material distribution channels 4a arranged side by side. The two material distribution channels on the left and right are inclined downward discharge channels. In this embodiment, the inclination angle of the inclined discharge channels is 52°, which is consistent with the inclination angle of the inclined chute below for easy connection. The discharge ports at the bottom of the three material distribution channels correspond to the inlets of the vertical chute (waste rock chute in this embodiment) and the two inclined chutes (ore chutes for conveying different ores in this embodiment), respectively. The external dimensions of the material distribution car in this embodiment are 6400×1604×2100mm (length×width×height). The upper inlet of each of the three material distribution channels in the material distribution car is 1000×1100mm, and the lower outlet is 1000×700mm. The material distribution car has a frame structure. The material distribution channels 4a are welded from δ16mm steel plates, the frame 4b is welded from 10# channel steel, and the frame chassis 4c is welded from 16# channel steel. The material distribution trolley is equipped with φ350mm track wheel sets (4d) at its bottom, which reciprocate on 24kg / m tracks mounted on the trolley's installation chamber and the floor of the chamber. The reciprocating movement of the trolley is controlled by a 3m stroke hydraulic device. The hydraulic device control room (20) is located inside the skip inclined shaft passage (7), and contains a hydraulic device controller and a video monitoring system. The controller has three settings, corresponding to the control of the inlet positions of the three material distribution channels of the trolley.

[0015] The method for simultaneously lifting and unloading multiple materials using a single skip inclined shaft, as described in this invention, involves first activating the hydraulic system and controlling the push-pull rod via the operating terminal to move and adjust the material distribution car 4, aligning its receiving channel with the unloading shaft 3 in real time. Then, the skip lifts different types of underground ore or waste rock along the skip inclined shaft to the unloading chamber 2 for unloading. The ore or waste rock is then unloaded through the unloading shaft into different receiving channels of the material distribution car, and then enters the inclined or vertical chute through these channels. The three receiving channels respectively receive different types of ore and waste rock, and are directed to different chutes. When the skip lifts the first type of ore, the operating terminal controls the push-pull rod 6 to move the material distribution car 4, aligning the receiving channel of that type of ore with the unloading shaft 3. The ore then enters the corresponding inclined chute storage section, and is then fed by the feeder 17 to the mine car 19 below. The mine car travels along the track, transporting the first type of ore to the designated unloading point. When the skip is lifting the second type of ore, the operator controls the push-pull lever 6 to move the distribution car 4, aligning the distribution channel of the distribution car for this type of ore with the unloading shaft 3. The ore then enters the storage section of the ore pass through the corresponding inclined chute, and is then fed by the feeder 17 to the mine car 19 below. The mine car runs along the track, transporting the second type of ore to the designated unloading point. When the skip is lifting waste rock, the operator controls the push-pull lever 6 to move the distribution car 4, aligning the distribution channel of the distribution car for waste rock with the unloading shaft 3. The waste rock enters the storage section of the ore pass through the corresponding vertical chute, and is then fed by the feeder 17 to the mine car 19 below. The mine car runs along the track, transporting the waste rock to the designated location.

[0016] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A system capable of simultaneously hoisting and unloading multiple materials from a single skip inclined shaft, characterized in that, The system consists of a material distribution chamber (5) located below the upper part of a skip inclined shaft (1), a material distribution car (4) installed in the material distribution chamber, and a three-way chute located below the ground level of the material distribution chamber. The three-way chute consists of a vertical chute (11) distributed in a three-way shape and two inclined chutes (10) symmetrically located on both sides of the vertical chute. The bottom of the vertical chute and the inclined chute are respectively equipped with a chute storage section (12). An inspection level (16) is provided between the chute storage sections of the vertical chute and the inclined chute. Below each chute storage section is a feeder chamber (13) equipped with a feeder (17), and the bottom of the chute storage section is connected to the feeder chamber. Below the feeder is a loading level (14) equipped with a ore car (19). An unloading chamber (2) is located above the material distribution chamber in the inclined shaft (1). An unloading shaft (3) leading to the material distribution chamber is located at the bottom of the unloading chamber. A skip (18) that can move back and forth is installed in the skip inclined shaft. A material distribution car installation chamber (8) is set up next to the material distribution chamber. The material distribution car (4) is connected to the push-pull rod (6) of the hydraulic device set in the material distribution car installation chamber and moves back and forth through the push-pull rod. A vertical first inspection shaft (9) is opened from the material distribution car installation chamber down through the inspection level roadway to the ore loading level roadway. A vertical second inspection shaft (15) is set between the inspection level roadway and the ore loading level roadway. The inspection level roadway is connected to the first inspection shaft and the second inspection shaft. The material distribution chamber (5) is connected to the skip inclined shaft (1) through the skip inclined shaft passage (7). The material distribution vehicle (4) has three material distribution channels (4a) arranged side by side, and the discharge ports at the bottom of the three material distribution channels correspond to the entrances of the vertical chute and the two inclined chutes, respectively.

2. The system according to claim 1, capable of simultaneously hoisting and unloading multiple materials from a single skip inclined shaft, is characterized in that, Ladders are provided in both the first and second inspection wells.

3. The system according to claim 1 or 2, capable of simultaneously hoisting and unloading multiple materials from a single skip inclined shaft, is characterized in that... The inclined angle of the inclined chute (10) is 52°, and the spacing between adjacent chute surrounding rock layers is >8.5m.

4. A method for simultaneously hoisting and unloading multiple materials in a single skip inclined shaft using the system described in claim 1, 2, or 3, characterized in that, The method is to first start the hydraulic device, move the material distribution car (4) by the action of the push-pull rod (6), and adjust the material distribution channel of the material distribution car to be received in real time to align with the unloading shaft (3); then use the skip to lift different types of underground materials to the unloading chamber (2) along the skip inclined shaft, and then unload the different materials into different material distribution channels of the material distribution car through the unloading shaft, and then enter the vertical chute or inclined chute through different material distribution channels; the three material distribution channels receive different materials and guide them into different chutes; the materials falling through each chute enter their respective chute storage sections, are sent to the mine car (19) below by the feeder (17), and are transported out by the mine car.

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