Large span self-adapting downwardly extending vertical lifting system and method

Abstract

The application discloses a large-span self-adaptive downward extending vertical lifting system and method, which is used for lifting system of open pit ore-drawing car and container, also used for lifting system of excavating large-section super-deep wellbore and lifting goods in large ship. It comprises horizontal support platform, self-extending vertical guide channel, vertical traction lifting system, self-adaptive loading and unloading system, and is suitable for technical fields of open pit lifting transportation, large ship material transportation and the like. The application adopts large-span suspension cable structure, realizes super-large space mining and improves mining range. The vertical traction lifting is adopted, and the material is lifted at the same time, so that the lifting efficiency is improved. The carrying container is adopted to replace the whole vehicle lifting, so that the bearing requirement of the lifting system and the horizontal support platform is reduced, and safety and reliability are achieved. The vertical lifting from the bottom to the horizontal support platform and the horizontal conveying on the horizontal support platform are connected in linkage, the lifting realizes linear transportation, and the lifting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of open pit truck and container lifting system, in particular to a large span self-adaptive downward extending vertical lifting system and method, which can be widely applied to the field of linear transportation technology in open pit mining, and also applicable to the lifting system of excavating large cross-section super deep shaft, and the lifting system for lifting goods in large ship across river and other lifting and transportation fields. BACKGROUND

[0002] With the increasing annual output of open pit mining, the mining pit is getting deeper. At present, the mining truck is mainly used for circular transportation in open pit mine. The vehicle repair and maintenance cost, diesel consumption and operation cost gradually increase. The exhaust and noise pollution of the truck gradually increase. In addition, the height of the open pit slope gradually increases, and the final slope angle becomes steeper. Since the climbing angle of the truck is only 8°-15°, and the self-weight of the whole vehicle is about 45% of the material weight, the running line curve increases frequently, the safety and transportation efficiency of the transportation vehicle are greatly reduced, the energy consumption of most trucks is used for self-weight consumption, the transportation cost increases, the annual output is not high, and the vehicle management system is complex.

[0003] For the ore transportation of open pit coal mine, the belt conveyor is mostly used. In the actual transportation process, due to long distance transportation and coal changes, etc., the equipment appears tension deficiency, skidding and other faults, which causes corresponding production and transportation safety hazards in the transportation process, and cannot realize the large slope belt transportation formed by the gradual increase of the mining depth of open pit mine.

[0004] In order to facilitate the transportation of ore, there is also a way of inclined skip transportation process. The skip transportation process needs a transfer station at the bottom of the mine and the ground, which increases the transportation cost, the annual output is not high, and is more suitable for shallow mining of the stope, cannot be used for deep mining of open pit mine, and cannot adapt to the working condition of gradually deepening the mining depth of open pit mine.

[0005] In addition, the Chinese patent application with publication number CN104843572A discloses a vertical lifting and transportation system for whole truck of open pit mine, which realizes the vertical lifting of the whole truck of the mining truck. However, the self-weight of the mining truck needs very large lifting capacity, which causes low lifting efficiency. In the case of broken rope, only the hydraulic rail clamp stops the platform, which has large control difficulty and needs to improve safety. The vertical lifting system needs to excavate a large amount of mountains, which has large engineering quantity of infrastructure, especially the free space on one side and the mountain on the other side, which needs to bear the horizontal ground pressure of the huge mountain, needs special reinforcement of the shaft to meet the requirements, and cannot adapt to the working condition of gradually deepening the mining depth of open pit mine.

[0006] The patent application with the publication number CN103334755A discloses a deep open-pit mine slope lifting and crushing system, which realizes slope lifting and crushing, but cannot adapt to the working condition that the mining depth gradually deepens, does not consider the downward extension of the guide rail of the slope system and the self-extension technology of the lifting system, and cannot meet the actual needs of open-pit mining.

[0007] The patent application with the publication number CN205575334U discloses a large-gradient lifting device for a self-unloading vehicle in an open-pit mine, which uses the principle of inclined shaft lifting and uses a mine multi-rope friction type lifting machine as a power device, so as to meet the integrated transportation of large load lifting and large gradient and no transloading; however, the steel wire rope is affected by external weather, is corroded on the surface, and is repeatedly bent and rubbed against the bushing, which causes the steel wire rope to break and the risk of the wheel type trolley running.

[0008] With the increase of the annual mining amount of the open-pit mine, it is necessary to improve the transportation efficiency of the open-pit mine and adopt an economic and efficient open-pit mine transportation mode.

[0009] In addition, the large-span truss suspension support structure and the self-adaptive extension lifting system can also meet the needs of shaft extension and can be used for excavation of a super-large end face super-deep shaft; for a waterway lock dam with large drop and large seasonal change of water depth, the self-adaptive height lifting of the ship can also be realized, and the application prospect is wide. SUMMARY

[0010] In view of the above technical deficiencies, the present application aims to provide a large-span self-adaptive downward extension vertical lifting system and method, which has simple structure, high safety and reliability, high automation, can be self-adaptively extended downward, and can effectively mine and transport open-pit mine materials such as coal mines, metal mines and non-metal mines by using the vertical lifting system.

[0011] To solve the above technical problems, the present application adopts the following technical solutions:

[0012] The application provides a large-span self-adapting downward extending vertical lifting system, which comprises a horizontal support platform spanning over a mine pit, a plurality of self-extending vertical guide channels, a vertical traction lifting system and a self-adapting loading and unloading system; the self-extending guide channels are arranged in the middle of the horizontal support platform and extend downward through preset feeding ports to the bottom of the mine pit; the vertical traction lifting system is arranged on the horizontal support platform and used for lifting a lifting container arranged in the self-extending guide channels; the self-adapting loading and unloading system comprises a self-adapting loading system arranged at the bottom of the mine pit and a self-adapting unloading system arranged on the horizontal support platform; the self-adapting loading system is used for loading materials into the lifting container; and the self-adapting unloading system is used for unloading the materials in the lifting container.

[0013] Preferably, the horizontal support platform comprises tower columns, cable-stayed cables and a transportation platform; the transportation platform adopts a large-span truss or concrete structure to span the mine pit; the transportation platform is fixed to the ground through the tower columns; and the cable-stayed cables are connected between the tower columns and the transportation platform; the horizontal support platform comprises a cable-stayed bridge, a suspension bridge and a tied-arch bridge; and the horizontal support platform is arranged along the diameter of a circular pit, the small diameter of an elliptical pit, the large diameter end of the elliptical pit or the small side of an irregular pit.

[0014] Preferably, the self-extending guide channels comprise vertical channel supports, horizontal transverse supports, support sleeve frames and lifting mechanisms; the vertical channel supports are composed of a plurality of standard sections; the horizontal transverse supports are fixedly connected between two adjacent vertical channel supports;

[0015] The support sleeve frames are sleeved outside the vertical channel supports and can move vertically up and down and be fixedly locked through bolts; the lower part of the lifting mechanism is fixed to the pit bottom, and the upper part of the lifting mechanism is fixedly connected with the vertical channel supports.

[0016] Preferably, the vertical traction lifting system comprises a lifting container arranged in the self-extending guide channels and capable of moving up and down, a guide wheel arranged at the top of the self-extending guide channels, a winding hoist arranged on the horizontal support platform and a steel wire rope connected with the lifting container; the steel wire rope is connected with a winding drum on the winding hoist through the guide wheel.

[0017] Preferably, two winding drums are arranged on the winding hoist, the two winding drums are connected side by side on an axle, the winding drums are connected with each other through a spread mechanism, and the winding drums are arranged on the horizontal support platform; when the mining depth increases, the working state of the winding drums is adjusted through the spread mechanism to achieve self-adapting mining height adjustment; a plurality of vertical traction lifting systems are symmetrically arranged at the two ends of the horizontal support platform to simultaneously work and improve the lifting efficiency.

[0018] Preferably, the lifting mode in the vertical traction hoisting system is selected from any one or combination of single rope winding hoisting, double rope winding hoisting, multi-rope winding hoisting and multi-rope friction hoisting; the vertical traction hoisting system adopting the multi-rope friction hoisting further comprises a drum, a motor, a second guide wheel and a rope storage wheel; the drum is installed at the top of the self-extending guide channel and is driven by the motor; the second guide wheel is installed in the self-extending guide channel, and the rope storage wheel is connected to the top of the lifting container and is provided with a locking device; the steel wire rope is wound on the rope storage wheel matched with the top of one of the lifting containers, passes through the second guide wheel, crosses the drum and is wound on the rope storage wheel connected to the top of the other lifting container.

[0019] Preferably, the self-adaptive unloading system comprises a belt unloading transportation mechanism and a mine transportation truck arranged on the horizontal support platform, and the self-adaptive loading system comprises a mine electric shovel, a mine self-unloading truck, a crusher, a belt conveyor and a stock bin arranged at the bottom of the self-extending guide channel and gradually lowered with the increase of the mining depth, thereby playing a role of transportation movement self-adaptation.

[0020] Preferably, the lifting container is provided with a loading port and an unloading gate mechanism; the material is transported into the lifting container from the stock bin through the loading port, then the lifting container is lifted to the horizontal support platform through the steel wire rope, and when the unloading gate mechanism of the lifting container is opened, the material is unloaded into the transportation equipment.

[0021] The application further provides a self-adaptive downward extending vertical lifting method adopting the large-span self-adaptive downward extending vertical lifting system, comprising the following steps:

[0022] First, two towers are vertically fixed to the ground, then the tower is fixed with a stay cable and a horizontal support platform is erected, and then the mining task can be performed;

[0023] When the mine pit extends downward, the support sleeve frame is first fixed with the second standard section, the mine material at the bottom of the support sleeve frame is cleaned, the lifting mechanism is installed below the lowermost standard section, the lowermost standard section is separated from the adjacent second standard section, the lifting mechanism lowers the lowermost standard section, then a new standard section is pushed into the empty position above the lowermost standard section and fixed, and then the mine material around the support sleeve frame is cleaned to make it suspended, the fixing of the support sleeve frame is released and the support sleeve frame is moved downward to the pit bottom, and thus the self-extending guide channel extends downward by one section; the above steps are repeated to realize the downward extension of the vertical channel.

[0024] When the vertical traction hoisting system works, the material to be lifted is first loaded into the lifting container, after the loading is completed, the lifting container is lifted from the pit bottom to the transportation platform above the self-extending guide channel by the steel wire rope, the steel wire rope is wound or unwound on the drum of the winding hoist to drive the lifting container to move on the self-extending guide channel.

[0025] When the lifting container is lifted to the transport platform, the winding drum stops working and waits for the unloading to start. When the unloading is completed, the lifting container is lowered to the bottom of the pit and waits for the next lifting work. The winding drum works with frequency control, which can continuously step the speed to make the transport platform move stably.

[0026] When the lifting container is selected for the vehicle, the mine transport truck is lifted as a whole. After the mine transport truck is fully loaded at the bottom of the pit, it drives into the vehicle lifting container. The lifting system vertically pulls the lifting system to lift it to the transport platform and drives out directly. The material is transported to the designated location.

[0027] When the mining depth increases, the height of the lifting container needs to be adjusted with the mining depth. At this time, the sudden opening mechanism is opened, and the winding drum works alone. The winding drum adjusts the length of the steel wire rope to lower one of the lifting containers to the appropriate height, and the other lifting container remains unchanged. Then close the sudden opening mechanism, and the two winding drums continue to work synchronously to provide driving force, or open the locking device on the storage reel to release the storage rope wound on the storage reel to adjust the height of the steel wire rope.

[0028] When loading, the mine shovel scoops the material into the mine dump truck, and then the mine dump truck unloads the material into the crusher to crush it into small particle material. Then the crushed material will be poured into the loading port of the silo through the belt conveyor.

[0029] When the lifting container is lowered to the appropriate position, the unloading gate mechanism of the silo is opened, and the material in the silo falls into the lifting container through the loading port of the lifting container.

[0030] When the loading is completed, the lifting container is lifted to the appropriate position above the transport platform by the steel wire rope. At this time, the unloading gate of the lifting container is opened, and the material falls into the belt unloading transport mechanism or the mine transport truck, thereby realizing loading and unloading.

[0031] The silo is fixed at the bottom of the support sleeve frame. When the mining depth increases, the silo will be lowered with the downward movement of the support sleeve frame, thereby achieving the purpose of self-adaptive loading.

[0032] The beneficial effects of the present application are that: the present application realizes the downward extension of the guide channel with the support frame of the self-extended guide channel, the simultaneous operation and separate operation of the two lifting containers are realized by the bulging mechanism arranged between the two winding drums, the material bin fixed on the vertical channel support gradually descends with the increase of the mining depth, and the self-adaptation to the mining depth is realized. The large-span suspension type structure is adopted to realize the super-large space mining and improve the mining range. The multi-channel vertical traction lifting is adopted to simultaneously work and lift the materials, and the lifting efficiency is improved. The lifting container is adopted to replace the whole vehicle lifting, the bearing requirements of the lifting system and the horizontal support platform are reduced, and the safety and reliability are high. The vertical lifting from the bottom to the horizontal support platform and the horizontal conveying on the horizontal support platform are adopted to realize the linear transportation and improve the lifting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 A structure schematic view of a large-span self-adaptive downward extension vertical lifting system provided for the embodiment 1 of the present application;

[0035] Figure 2 A structure schematic view of a large-span self-adaptive downward extension vertical lifting system provided for the embodiment 2 of the present application;

[0036] Figure 3 A structure schematic view of a large-span self-adaptive downward extension vertical lifting system provided for the embodiment 3 of the present application;

[0037] Figure 4 A schematic view of the self-adaptive extension mining process of the present application;

[0038] Figure 5 A schematic view of the downward extension of the self-extended guide channel provided by the present application;

[0039] Figure 6 A schematic view of each component in the self-adaptive loading and unloading system provided by the present application;

[0040] Figure 7 A schematic view of a single-rope winding type lifting system provided by the present application;

[0041] Figure 8 A schematic view of a double-rope winding type lifting system provided by the present application;

[0042] Figure 9 A schematic diagram of the double drum installation provided for the present invention;

[0043] Figure 10 A schematic diagram provided for embodiment 4 of the present invention;

[0044] Figure 11 A schematic diagram provided for embodiment 5 of the present invention;

[0045] Figure 12 A schematic diagram provided for embodiment 6 of the present invention;

[0046] Figure 13 A schematic diagram of the frictional traction system provided for embodiment 7 of the present invention.

[0047] Figure 14 A schematic diagram of the horizontal support platform provided for embodiment 1 of the present invention along the diameter of a circular pit;

[0048] Figure 15 A schematic diagram of the horizontal support platform provided for embodiment 1 of the present invention along the minor axis of an elliptical pit;

[0049] Figure 16 A schematic diagram of the horizontal support platform provided for embodiment 1 of the present invention along the major axis of an elliptical pit;

[0050] Figure 17 A schematic diagram of the horizontal support platform provided for embodiment 1 of the present invention along the minor axis of an irregular pit;

[0051] BRIEF DESCRIPTION OF DRAWINGS:

[0052] 1. Horizontal support platform; 1-1, tower column; 1-2, stay cable; 1-3, transport platform; 1-4, feed inlet; 1-5, main cable; 1-6, sling cable; 1-7, arch frame; 1-8, tie rod;

[0053] 2. Self-extending guide channel; 2-1, vertical channel support; 2-1-1, standard section; 2-2, horizontal transverse support; 2-3, support sleeve frame; 2-4, lifting mechanism;

[0054] 3. Vertical traction hoisting system; 3-1, hoisting container; 3-2, steel wire rope; 3-3, guide wheel; 3-4, drum; 3-5, opening mechanism; 3-6, roller; 3-7, motor; 3-8, second guide wheel; 3-9, storage wheel;

[0055] 4. Self-adapting loading and unloading system; 4-1, mine shovel; 4-2, mine dump truck; 4-3, crusher; 4-4, belt conveyor; 4-6, silo; 4-7, belt unloading transport mechanism; 4-8, belt unloading transport mechanism; 4-9, mine transport truck. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0057] Embodiment 1;

[0058] As shown in Figure 1 , Figures 4-6 , the large-span self-adaptive downward extension vertical lifting system in the embodiment comprises a horizontal support platform 1, a self-extension vertical guide channel 2, a vertical traction lifting system 3, a self-adaptive loading and unloading system 4.

[0059] The self-extension guide channel 2 is in the middle of the horizontal support platform 1 and passes through the opening arranged on the horizontal support platform 1 downward to the bottom of the mine pit; the vertical traction lifting system 3 is arranged on the horizontal support platform 1, and the lifting channel thereof is arranged inside the self-extension guide channel; the self-adaptive loading system is arranged at the bottom of the mine pit; and the self-adaptive unloading system is arranged on the horizontal support platform 1.

[0060] As shown in Figure 1 , the horizontal support platform 1 spans over the mine pit and adopts the support form of a cable-stayed bridge, comprising a tower column 1-1, a cable-stayed cable 1-2, a transportation platform 1-3 and a feeding port 1-4; the tower column 1-1 is vertically fixed to the ground; the cable-stayed cable 1-2 is connected with the tower column 1-1 and the transportation platform 1-3 at two ends respectively; the transportation platform 1-3 is suspended above the ground in a steel truss or concrete structure and is parallel to the ground; two feeding ports are located at appropriate positions of the middle position of the transportation platform 1-3 and penetrate the transportation platform 1-3, which are used for passing through the self-extension guide channel 2.

[0061] The arrangement mode of the horizontal support platform 1 comprises arrangement along the diameter of a circular pit (see Figure 14 ), arrangement along the small diameter of an elliptical pit (see Figure 15 ), arrangement along the large diameter end of an elliptical pit (see Figure 16 ), arrangement along the small side of an irregular pit (see Figure 17 ).

[0062] The self-extending guide channel 2 is a lifting channel of the vertical traction lifting system 3, which is composed of a vertical channel support 2-1, a horizontal transverse support 2-2, a support sleeve frame 2-3 and a lifting mechanism 2-4. The vertical channel support 2-1 is fixed by bolt connection of a plurality of standard sections 2-1-1, extends downward from the horizontal support platform 1-3 to the pit bottom, and the top thereof passes through the opening on the horizontal support platform 1-3. The horizontal transverse support 2-2 is fixedly connected between the two vertical channel supports 2-1, and can improve the lateral stiffness of the vertical channel support 2-1. The support sleeve frame 2-3 is sleeved outside the vertical channel support, and can move vertically up and down. The lifting mechanism 2-4 is fixed at the lower part of the pit bottom and the upper part of the vertical channel support 2-1.

[0063] The mechanical device part of the vertical traction lifting system 3 includes a lifting container 3-1, a steel wire rope 3-2, a guide wheel 3-3, a winding drum 3-4 and a burst mechanism. The winding drum 3-4 of the winding drum is installed at a proper position above the horizontal support platform 1, the guide wheel 3-3 is installed at the top of the vertical channel support 2-1, the lifting container 3-1 is connected with the winding drum 3-4 through the steel wire rope 3-2 and the guide wheel 3-3, and is driven by the winding drum 3-4 to vertically lift the material in the self-extending guide channel 2. The burst mechanism (see Figure 9 ) is installed between the winding drums 3-4 to realize self-adaptive height adjustment of the rope.

[0064] The driving part of the vertical traction lifting system 3 can be selected from single-rope winding lifting (as shown in Figure 6 ), double-rope winding lifting (as shown in Figure 7 , Figure 8 ) and multi-rope winding lifting. The single-rope winding lifting system rotates the winding drum to drive the steel wire rope to wind, the steel wire rope is connected with the lifting container through the guide wheel, and when the loading is completed, the winding drum is reversed to lift the lifting container upward. The double-rope winding lifting system and the multi-rope winding lifting system can simultaneously operate two lifting containers, one lifting container is lifted while the other lifting container is lowered to improve the transportation efficiency. The winding lifting system adopts a double-drum installation, the two winding drums are connected by a mechanism similar to a clutch, and the winding drums can work independently, the lifting height can be adjusted, and self-adaptive lifting height adjustment can be achieved.

[0065] The self-adaptive unloading system mainly includes a belt unloading and transportation mechanism 4-7 and a mine transport truck 4-8. The belt unloading and transportation mechanism 4-7 and the mine transport truck 4-8 are arranged on the unloading platform, the hopper 4-5 and the lifting container 3-1 are provided with a loading port and an unloading gate mechanism, and the hopper 4-5 is fixed on the top of the support sleeve frame 2-3. The unloading system adopts the belt unloading and transportation mechanism 4-7 or the mine transport truck 4-8 to receive the material.

[0066] As shown in Figure 4As shown, when the pit extends downward, the two towers are first fixed vertically on the ground, then the stay cables are fixed on the towers and the horizontal support platform is erected. Then the mining task can be carried out. Figure 5 As shown, when the pit extends downward, the support sleeve frame 2-3 is first fixed with the second standard section 2-1-1, the ore material at the bottom of the support sleeve frame 2-3 is cleaned, the lifting mechanism 2-4 is placed under the lower standard section, the lower standard section is separated from the adjacent upper standard section, the lifting mechanism 2-4 lowers the lower standard section, then a new standard section is pushed into the empty space above and fixed, the surrounding ore material is cleaned, and thus the self-extending guide channel 2 extends downward by one section. This is repeated to realize the downward extension of the vertical channel.

[0067] When the vertical traction lifting system 3 is working, the material to be lifted is first loaded into the lifting container 3-1. After loading is completed, the lifting container 3-1 is lifted from the pit bottom to the transportation platform 1-3 above by the steel wire rope 3-2 along the self-extending guide channel 2-2. The steel wire rope 3-2 is wound or unwound by the winding type lifting machine drum 3-4 to drive the lifting container 3-1 to move on the guide channel 2-2. When the lifting container 3-1 is lifted to the transportation platform 1-3, the drum 3-4 stops working and waits for unloading. After unloading is completed, the lifting container 3-1 is lowered to the pit bottom and waits for the next lifting work. The drum 3-4 works with variable frequency control and can continuously step the speed to make the transportation platform 1-3 move stably. The lifting container 3-1 includes a material lifting container and a vehicle lifting container.

[0068] When the mining depth increases, the height of the lifting container 3-1 needs to be adjusted with the increase of the mining depth. At this time, the sudden opening mechanism 3-5 is opened, the drum 3-4 works alone, the drum 3-4 lowers one of the lifting containers 3-1 to the appropriate height by adjusting the length of the steel wire rope 3-2, and the other lifting container 3-1 keeps the height unchanged, then the sudden opening mechanism 3-5 is closed, the two drums 3-4 continue to work synchronously to provide driving force, or the locking device on the storage reel 3-9 is opened to release the storage rope wound on the storage reel, realizing self-adaptive height adjustment of the steel wire rope 3-2.

[0069] When loading, the electric shovel 4-1 scoops the material into the mine dump truck 4-2, and then the mine dump truck 4-2 unloads the material into the crusher 4-3 to break it into small particle material, and then the broken material is poured into the loading port of the stock bin 4-5 through the belt conveyor 4-4. When the lifting container 3-1 is lowered to the appropriate position, the unloading gate mechanism of the stock bin 4-5 is opened, and the material in the stock bin 4-5 falls into the lifting container 3-1 through the loading port of the lifting container 3-1. When the loading is completed, the lifting container 3-1 is lifted to the appropriate position above the transport platform 1-3 by the steel wire rope, at this time the unloading gate of the lifting container 3-1 is opened, and the material falls into the belt unloading transport mechanism 4-7 or the mine transport truck 4-8, thereby realizing loading and unloading. The stock bin 4-5 is fixed at the bottom of the support sleeve frame 2-3, and when the mining depth increases, the stock bin 4-5 is lowered with the downward movement of the support sleeve frame 2-3, thereby achieving the purpose of self-adaptive loading.

[0070] Embodiment 2;

[0071] This embodiment is improved on the basis of embodiment 1, as shown in Figure 2 , the horizontal support platform adopts the support form of a suspension bridge, and the horizontal support platform mainly comprises a tower column 1-1, a main cable 1-5, a sling 1-6, a transport platform 1-3 and a loading port 1-4; the tower column is vertically fixed to the ground; the main cable 1-5 is anchored to the ground at both ends and is fixedly connected to the tower column in the middle; the sling 1-6 is fixed to the main cable 1-5 at the upper end and is connected to the load-bearing transport platform 1-3 at the lower end.

[0072] Embodiment 3;

[0073] This embodiment is improved on the basis of embodiment 1, as shown in Figure 3 , the horizontal support platform adopts the support form of a tied-arch bridge, and the horizontal support platform mainly comprises an arch frame 1-7, a tie rod 1-8, a transport platform 1-3, a loading port 1-4 and a stock bin 4-5; the arch frame 1-7 is fixed to the ground; the tie rod 1-8 is fixed to the arch frame 1-7 at the upper end and is connected to the load-bearing transport platform 1-3 at the lower end.

[0074] Embodiment 4;

[0075] This embodiment is improved on the basis of embodiment 1, as shown in Figure 10 , the lifting machine drum 3-4 is arranged above the vertical channel support 2-1, which can avoid the transverse force acting on the channel support.

[0076] Embodiment 5;

[0077] This embodiment is improved on the basis of embodiment 4, as shown in Figure 11As shown, the number of self-extending guide channels is increased to four, and four sets of vertical traction lifting systems are set accordingly. The two lifting containers in each set of vertical lifting systems operate alternately up and down during operation. The use of multi-channel vertical traction lifting improves the transportation speed and is suitable for mining within the mining area.

[0078] Example 6

[0079] This embodiment is an improvement on embodiments 1 and 5, such as... Figure 12 As shown, four self-extending guide channels 2 are set up. Guide wheels 3-3 are set above the vertical channel support 2-1. The drum 3-4 is installed at an appropriate position above the vertical channel support 2-1 arranged on the outside of the horizontal support platform 1. Among them, the guide wheels 3-3 of the two vertical channel supports 2-1 located in the middle position are at a higher position, and the corresponding lifting system drum 3-4 is also set at a higher position on the outside of the horizontal support platform 1.

[0080] Example 7

[0081] This embodiment is an improvement on embodiment 1, such as... Figure 13 As shown, the vertical traction lifting system 3 adopts friction traction. The vertical traction lifting system 3 mainly consists of a roller 3-6, a motor 3-7, a second guide wheel 3-8, and a rope storage wheel 3-9. The roller 3-6 is installed at the top of the self-extending guide channel 2 and is driven by the motor 3-7. The second guide wheel 3-8 is installed at an appropriate position in the self-extending guide channel 2. The rope storage wheel 3-9 is connected to the top of the lifting container 3-1 and is equipped with a locking device, which is a commercially available alternative. The wire rope 3-2 is wound around the rope storage wheel 3-9 on the top of one side of the lifting container 3-1, passes upwards through the second guide wheel 3-8, crosses the roller 3-6, and is wound around the rope storage wheel 3-9 on the top of the other side of the lifting container 3-1. The locking device is normally closed, locking the rope storage wheel. When the mining depth increases, the locking device on the rope storage wheel 3-9 is opened, releasing the stored rope wound on the rope storage wheel, thus allowing the lifting container to extend downwards.

[0082] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A large-span adaptive downward-extending vertical lifting system, characterized in that: The system includes a horizontal support platform (1) spanning the mine pit, several vertical self-extending guide channels (2), a vertical traction lifting system (3), and an adaptive loading and unloading system (4). The self-extending guide channels (2) are located in the middle of the horizontal support platform (1) and extend downwards through its preset loading port (1-4) to the bottom of the mine pit. The vertical traction lifting system (3) is installed on the horizontal support platform (1) to lift the lifting container (3-1) located inside the self-extending guide channel (2). The adaptive loading and unloading system (4) includes an adaptive loading system located at the bottom of the mine pit and an adaptive unloading system located on the horizontal support platform (1). The adaptive loading system is used to load materials into the lifting container (3-1). The adaptive unloading system is used to unload materials from the lifting container (3-1). The self-extending guide channel (2) includes a vertical channel support (2-1), a horizontal support (2-2), a support frame (2-3), and a lifting mechanism (2-4); the vertical channel support (2-1) is composed of several standard sections (2-1-1); the horizontal support (2-2) is fixedly connected between two adjacent vertical channel supports (2-1); The support frame (2-3) is placed at the bottom of the pit and sleeved on the outside of the vertical channel support (2-1), and can move vertically up and down and be locked in place; the lower part of the lifting mechanism (2-4) is fixed to the bottom of the pit, and the upper part of the lifting mechanism (2-4) is fixedly connected to the vertical channel support (2-1); The vertical traction lifting system (3) includes a lifting container (3-1) that is located in the self-extending guide channel (2) and can move up and down, a guide wheel (3-3) located at the top of the self-extending guide channel (2), a winding hoist located on the horizontal support platform (1), and a wire rope (3-2) connecting the lifting container (3-1); the wire rope (3-2) is connected to the drum (3-4) on the winding hoist through the guide wheel (3-3), and the lifting container (3-1) includes a material lifting container and a vehicle lifting container; The winding hoist is equipped with two drums (3-4), which are connected side by side on a shaft. The drums (3-4) are connected by a release mechanism (3-5). The drums (3-4) are installed on a horizontal support platform (1). When the mining depth increases, the working state of the drums (3-4) is adjusted by the release mechanism (3-5) to achieve adaptive mining height adjustment. Several vertical traction hoisting systems (3) are symmetrically installed at both ends of the horizontal support platform (1) to hoist materials at the same time and improve hoisting efficiency. The adaptive loading system includes a mining electric shovel (4-1), a mining dump truck (4-2), a crusher (4-3), a belt conveyor (4-4), and a hopper (4-5). The hopper (4-5) is fixed to the bottom of the support frame (2-3). As the mining depth increases, the hopper (4-5) descends along with the support frame (2-3), thus playing an adaptive role in transportation and movement.

2. The large-span adaptive downward-extending vertical lifting system as described in claim 1, characterized in that: The horizontal support platform (1) includes tower columns (1-1), cable stays (1-2), and a transport platform (1-3). The transport platform (1-3) adopts a large-span truss or concrete structure to span the mine pit. The transport platform (1-3) is fixed to the ground by several tower columns (1-1). The tower columns (1-1) and the transport platform (1-3) are connected by cable stays (1-2). The structural form of the horizontal support platform (1) includes cable-stayed bridges, suspension bridges, and tied arch bridges. The arrangement of the horizontal support platform (1) includes arrangement along the diameter of the circular pit, arrangement along the small diameter of the elliptical pit, arrangement at the end of the large diameter of the elliptical pit, and arrangement on the side of the small span of the irregular pit.

3. The large-span adaptive downward-extending vertical lifting system according to claim 2, characterized in that: The vertical traction lifting system (3) uses any one or more combinations of single-rope winding lifting, double-rope winding lifting, multi-rope winding lifting, and multi-rope friction lifting. The vertical traction lifting system (3) using multi-rope friction lifting also includes a roller (3-6), a motor (3-7), a second guide wheel (3-8), and a rope storage wheel (3-9). The roller (3-6) is installed on the top of the self-extending guide channel (2) and is driven by the motor (3-7). The second guide wheel (3-8) is installed on the self-extending guide channel (2), and the rope storage wheel (3-9) is connected to the top of the lifting container (3-1). The wire rope (3-2) is wound around the rope storage wheel (3-9) adapted to the top of one of the lifting containers (3-1), and then passes through the second guide wheel (3-8), crosses the roller (3-6), and is wound around the rope storage wheel (3-9) on the top of the other lifting container (3-1).

4. The large-span adaptive downward-extending vertical lifting system according to claim 3, characterized in that: The adaptive unloading system also includes a belt unloading transport mechanism (4-7) and a mining transport truck (4-8).

5. The large-span adaptive downward-extending vertical lifting system according to claim 4, characterized in that: The lifting container (3-1) is equipped with a loading port and an unloading gate mechanism. The material is transported from the silo (4-5) into the lifting container (3-1) through the loading port. Then, the lifting container (3-1) is lifted to the horizontal support platform (1) by the wire rope (3-2). When the unloading gate mechanism in the lifting container (3-1) is opened, the material is unloaded into the transport equipment.

6. An adaptive downward extension vertical lifting method using the large-span adaptive downward extension vertical lifting system as described in claim 5, characterized in that: Includes the following steps: First, the two tower columns (1-1) are vertically fixed to the ground. Then, the inclined cable (1-2) is fixed to the tower column (1-1) and a horizontal support platform (1) is erected. Mining tasks are then carried out. When the mine extends downward, first fix the support frame (2-3) to the second standard section (2-1-1) at the bottom, clean out the ore at the bottom of the support frame (2-3), install the lifting mechanism (2-4) below the lowest standard section (2-1-1), separate the lowest standard section (2-1-1) from the adjacent second standard section (2-1-1), lower the lowest standard section (2-1-1) using the lifting mechanism (2-4), and then push in a new standard section (2-1-1) in the empty space above it and fix it. Then clean out the ore around the support frame (2-3) to make it suspend, release the fixation of the support frame (2-3) and move it down to the bottom of the pit. Thus, the extension guide channel (2) extends downward by one section; repeat this process to achieve the downward extension of the vertical channel. When the vertical traction lifting system (3) is working, the material to be lifted first needs to be loaded into the lifting container (3-1). After loading, the lifting container (3-1) is lifted from the bottom of the pit to the transport platform (1-3) along the self-extending guide channel (2) using a wire rope (3-2). The wire rope (3-2) is wound or released by the drum (3-4) of the winding hoist to drive the lifting container (3-1) to move on the self-extending guide channel (2). After the lifting container (3-1) is lifted onto the transport platform (1-3), the drum (3-4) stops working and waits to start unloading. After unloading is completed, the lifting container (3-1) is lowered to the bottom of the pit and waits for the next lifting operation. The drum (3-4) is operated by frequency conversion control, which can continuously step speed regulation to make the transport platform (1-3) move stably. When a vehicle lifting container is selected for lifting container (3-1), the mining transport truck (4-8) is lifted as a whole. After the mining transport truck (4-8) is loaded at the bottom of the pit, it drives into the vehicle lifting container. The lifting system vertically pulls the lifting system (3) to lift it to the transport platform (1-3) and drive it out directly to transport the material to the designated location. As the mining depth increases, the height of the hoisting container (3-1) needs to be adjusted accordingly. At this time, the opening mechanism (3-5) is opened, allowing the drum (3-4) to work independently. The drum (3-4) lowers one of the hoisting containers (3-1) to a suitable height by adjusting the length of the wire rope (3-2), while the other hoisting container (3-1) remains at a constant height. Then, the opening mechanism (3-5) is closed, and the two drums (3-4) continue to work synchronously to provide driving force. Alternatively, the locking device on the storage rope wheel (3-9) can be opened to release the reserve rope wound on the storage rope wheel, thereby adjusting the height of the wire rope (3-2). During loading, the mining electric shovel (4-1) shovels the material into the mining dump truck (4-2), and then the mining dump truck (4-2) unloads the material into the crusher (4-3) to crush it into small particles. Subsequently, the crushed material will be poured into the loading port of the silo (4-5) by the belt conveyor (4-4). When the lifting container (3-1) is lowered to the appropriate position, the unloading gate mechanism of the silo (4-5) opens, and the material in the silo (4-5) falls into the lifting container (3-1) through the loading port of the lifting container (3-1); After loading is completed, the lifting container (3-1) is lifted to a suitable position above the transport platform (1-3) by the wire rope (3-2). At this time, the unloading gate of the lifting container (3-1) is opened, and the material falls into the belt unloading transport mechanism (4-7) or the mining transport truck (4-8), thereby realizing loading and unloading. The hopper (4-5) is fixed at the bottom of the support frame (2-3). As the mining depth increases, the hopper (4-5) descends along with the support frame (2-3), thereby achieving adaptive loading.

Images