CN210460661U - Large-area block open-pit continuous mining system - Google Patents

Abstract

The utility model relates to a large-area block open pit continuous mining system, including scraper conveyor and miner, scraper conveyor lays along working face mine wall side, scraper conveyor's outer end surpasss the outer end of working face mine wall, the miner rides and locates on the scraper conveyor, and with scraper conveyor straight line sliding connection, scraper conveyor's non-mine wall side is provided with the pusher, the pusher through its guider with scraper conveyor straight line sliding connection, scraper conveyor's outer end crosses the aqueduct through one and links up with rubber belt conveyor, rubber belt conveyor is fixed to be set up subaerial, its extending direction with scraper conveyor's laying direction is perpendicular. The utility model discloses can satisfy continuous, high-efficient, the economic exploitation demand in middle-size and small-size strip mine seam.

Description

Large-area block open-pit continuous mining system

Technical Field

The utility model relates to a strip mine continuous mining equipment system is particularly useful for the continuous mining of large-area blocking strip mine.

Background

The mining of the strip mine usually adopts a mode of matching excavator mining with automobile transportation, and the matching mining process has better flexibility. With the increase of the productivity, the development of the excavator from a small bucket capacity to a large bucket capacity and the development of a hydraulic excavator to an electric excavator (an electric shovel) is required. However, through long-term use data statistics, the operation cost of the automobile transportation in the next year is very high, particularly the consumption of fuel tires, the later maintenance cost and the like, so that the intermittent mining process has great economic problems when being used in long-distance transportation occasions.

In order to reduce the cost of long-distance conveying to the utmost extent, the industry gradually adopts a belt conveying mode, and a working surface is matched with a large-scale electric shovel and a crushing system. Mining equipment with a self-provided crushing system of a bucket type continuous excavator is adopted for increasing the capacity of some ultra-thick ore layers as much as possible, however, the bucket type continuous excavator system is huge in manufacturing cost and relatively high in use and management cost, so that the large continuous mining system is difficult to bear for small and medium-sized ore enterprises. In addition, the electric shovel and the crushing system are high in manufacturing cost, due to the fact that idle stroke operation time exists and the use is relatively discontinuous, semi-continuous mining is achieved by the fact that the electric shovel is matched with the crushing system and the belt type conveying system, and for operation of medium and small-sized mining enterprises, the problems of high equipment investment cost and maintenance cost, limited productivity and the like still exist.

Over the years, management is also devised at home and abroad, for example, the utilization rate of equipment is improved by adopting automatic control, the personnel cost is reduced by reducing the number of people and mining the like, and an economical and efficient mining mode is still not found fundamentally to adapt to the mining problem of small and medium-sized strip mine deposits.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a large-area block-type strip mine continuous mining system can satisfy continuous, high-efficient, the economic exploitation demand in middle-size and small-size strip mine seam.

The utility model discloses a main technical scheme has:

the utility model provides a large-area massing strip mine continuous mining system, includes scraper conveyor and miner, scraper conveyor lays along working face ore wall side, scraper conveyor outwards carries the mineral aggregate by the lining, scraper conveyor's outer end surpasss the outer end of working face ore wall, the miner rides and locates on the scraper conveyor, and with scraper conveyor straight line sliding connection, the extending direction of sliding direction along scraper conveyor, the miner corresponds outside exploitation stroke along the one-way walking process of the inner end of ore wall to the outer end, and the one-way walking process of miner outer end along ore wall to the inner end corresponds the exploitation stroke inwards, scraper conveyor's non-ore wall side is provided with can be from the pusher jack that walks, the pusher through its guider with scraper conveyor straight line sliding connection.

The scraper conveyor comprises one or more conveyor trough groups, each conveyor trough group is formed by sequentially and flexibly connecting a plurality of conveyor troughs, a certain trough interval is kept between every two adjacent conveyor troughs, the two adjacent conveyor troughs are flexibly connected through a connecting piece, an independent power device is arranged on the head end conveyor trough or the tail end conveyor trough of each conveyor trough group, when a plurality of conveyor trough groups exist, the conveyor trough groups are sequentially connected, the two conveyor troughs mutually connected with the adjacent conveyor trough groups are rigidly connected, and a push guide rail is arranged on the non-ore wall side of each conveyor trough.

The pushing arm of the pushing machine is connected with the pushing guide rail in a sliding mode through the guide device, and the guide device is a guide wheel.

The pusher jack comprises a pusher jack and a traveling system, and the pusher jack is carried on the traveling system.

The walking system preferably adopts a crawler type engineering machinery walking system.

The large-area block open-pit continuous mining system is characterized in that a rubber belt conveyor is preferably arranged, the rubber belt conveyor is fixedly arranged on the ground, the extending direction of the rubber belt conveyor is perpendicular to the scraper conveyor, the rubber belt conveyor keeps a certain distance from the outer end of the mine wall of the working face, and the outer end of the scraper conveyor is connected with the rubber belt conveyor through a transition groove or a belt transfer conveyor.

The continuous mining machine set comprises a set of scraper conveyor, a mining machine and one to two pusher conveyors, the same set of belt conveyor is matched with more than two sets of continuous mining machine sets, all the continuous mining machine sets are arranged on the same side of the belt conveyor, all the scraper conveyors are arranged in parallel, all the continuous mining machine sets are dispersedly arranged in a groove for dividing a region to be mined into a plurality of blocks arranged in a straight line, and one side or two side mine walls of each block facing the groove respectively correspond to one set of continuous mining machine sets.

The utility model has the advantages that:

due to the adoption of the continuous conveying technology of the scraper conveyor, the continuous conveying of mineral materials can be realized, a fixed running track can be provided for the mining machine, and a foundation is provided for ore falling and ore loading of high-speed walking mining of the mining machine.

Because the pusher jack can in time pass the scraper conveyor in the scope that the corresponding of the mine wall after the mining machine cuts to the mine wall, for the reverse walking of mining machine to here carry out next round cut the mine wall and do well the preparation of walking track and ore breakage, do not need the mining machine to shut down, can make cut mining, loading, conveying in the working face, working face equipment removal etc. can both go on in succession, improved the utilization ratio of equipment greatly, consequently make the productivity obviously improve.

The utility model discloses a jointly adopt the miner, scraper conveyor, rubber belt conveyor and pusher jack and rationally lay, utilize the miner to carry out the ore deposit that falls in succession, adorn the ore deposit, utilize scraper conveyor to carry out the interior continuous conveyor of mineral aggregate working face, impel in succession, utilize rubber belt conveyor to carry out the continuous conveyor of fixed working face outward, utilize the pusher jack in time to prepare the orbit of next one-way stroke for the miner in advance, formed the equipment system that can realize continuous mining, can show improvement mining efficiency.

The mining system has the advantages of simple structure of each device, good technical integration, easy modularization, simple operation and less investment cost, thereby having good economy, being capable of forming flexible configuration of large-block multi-working face on site and having huge capacity potential.

The utility model discloses an exploitation system can be used to the big district piece exploitation of many working faces, and the problem that the equipment continuous utilization that brings such as band conveyer removes in the traditional exploitation that can significantly reduce is low, can obviously improve equipment system's availability factor to show and promote the productivity.

Drawings

Fig. 1 is a schematic view of the equipment layout (single face) of an embodiment of the present invention;

FIG. 2 is a view of a continuous production feed process with the arrangement of FIG. 1;

fig. 3 is a schematic view (single face) of the equipment layout of a second embodiment of the present invention;

FIG. 4 is a view of a continuous production feed process with the arrangement of FIG. 3;

fig. 5 is a schematic view of the equipment layout (double face) of a third embodiment of the present invention;

fig. 6 is a schematic view of the arrangement of the apparatus according to the fourth embodiment of the present invention (multiple working surfaces).

Description of reference numerals:

1. a scraper conveyor; 11. a conveying trough; 12. a push guide rail; 13. a connecting member; 14. a transition groove;

2. a pushing machine; 20. a guide device; 21. an inner end pusher; 22. an outer end pusher; 23. a pushing machine;

3. a mining machine;

4. a rubber belt conveyor.

Detailed Description

The utility model discloses a large-area block-type continuous mining system for strip mine, as shown in fig. 1, 3, including scraper conveyor (can be called for short scraper) 1 and cylinder miner (called for short miner) 3, scraper conveyor lays along working face mine wall side, scraper conveyor outwards carries the mineral aggregate by the lining, scraper conveyor's outer end surpasss the outer end of working face mine wall. The mining machine is arranged on the scraper conveyor in a riding mode and is in linear sliding connection with the scraper conveyor, and the sliding direction is along the extending direction of the scraper conveyor. The one-way walking process of the mining machine along the inner end to the outer end of the mine wall corresponds to an outward mining stroke, and the one-way walking process of the mining machine along the outer end to the inner end of the mine wall corresponds to an inward mining stroke. A self-walking pusher jack 2 is arranged on the non-mine wall side of the scraper conveyor. The pusher is connected with the scraper conveyor in a linear sliding mode through a guide device 20 on the pusher, and the sliding direction is along the extension direction of the scraper conveyor.

By adopting the continuous conveying technology of the scraper conveyor, the continuous conveying of mineral materials can be realized, a fixed running track can be provided for the mining machine, and a foundation is provided for ore falling and ore loading of high-speed walking mining of the mining machine. The mining machine is matched with the scraper conveyor, so that continuous ore falling, ore loading and ore material conveying in a working face are realized.

Through supporting pusher, in time pass a cut-off depth distance with scraper conveyor to the mining wall at the back of mining machine walking direction, for the next one-way stroke exploitation of mining machine prepares walking track and the space of loading ore in advance, and this kind of is passed can go on simultaneously with the current exploitation of mining machine, each other does not influence, and degree of automation is high, consequently can obviously shorten supplementary man-hour, can still keep the continuity at the in-process that mining machine finishes one-way stroke reverse entering next one-way stroke.

The scraper conveyor can comprise one or more conveying groove groups, each conveying groove group is formed by sequentially connecting a plurality of conveying grooves 11, a certain groove interval is kept between every two adjacent conveying grooves, and the two adjacent conveying grooves are flexibly connected through a connecting piece 13, namely, the connecting position is allowed to have certain bending in a horizontal plane and a vertical plane. An independent power device is arranged on the head end conveying trough or the tail end conveying trough of each conveying trough group. When the scraper conveyor is provided with a plurality of conveying trough groups, the conveying trough groups are connected in sequence, and two conveying troughs connected with each other by adjacent conveying trough groups are rigidly connected, so that the transverse dislocation of the two conveying troughs is prevented, and the continuity of the mining machine walking track at the position is maintained. The non-mine wall side of each conveying trough is provided with a pushing guide rail 12. The number of conveying grooves is determined according to the length of the working surface.

The guide device 20 of the pusher is slidably connected to the pusher rail 12. The guide device can adopt a guide wheel.

The mining machine comprises a walking supporting mechanism, and the walking supporting mechanism is in sliding fit with a walking track positioned at the top of the conveying groove so as to realize the linear sliding connection of the mining machine and the scraper conveyor.

The scraper conveyor can be divided into an inner section, a middle section and an outer section in sequence, the outer section is just arranged outside the outer end of the working face mine wall, and the inner section is just arranged in the inner end of the working face mine wall or opposite to the inner section of the working face mine wall. The length of the inner and outer sections is not particularly limited and is generally determined based on the actual length of space required for the miner to make a plunge cut into the mine wall from the inner and outer ends, corresponding to the necessary, preparatory and transitional travel distances for the miner.

One or two of the pushing machines can be configured. When there is one, indicated by pusher jack 23, the inner and outer pusher jacks are located respectively close to the inner end of the face wall and the outer end of the face wall, and may be referred to as inner pusher jack 21 and outer pusher jack 22, respectively. The walking range of the inner end shifter corresponds to the inner end of the inner section of the scraper conveyor to the inner end of the outer section, and the walking range of the outer end shifter corresponds to the outer end of the outer section of the scraper conveyor to the inner end.

The large-area block open pit continuous mining system is preferably further provided with a rubber belt conveyor 4, the rubber belt conveyor is a material conveyor for longitudinal belt conveying, the rubber belt conveyor is fixedly arranged on the ground, and the extending direction of the rubber belt conveyor is perpendicular to the laying direction of the scraper conveyor and parallel to the pushing direction of the scraper conveyor. The outer end of the scraper conveyor is connected with the rubber belt conveyor through a transition groove 14 or a belt transfer conveyor. The transition chute is usually a discharge chute and can convey mineral aggregates on the scraper conveyor to the belt conveyor. The arrangement of the rubber belt conveyor realizes the continuous conveying of the mineral aggregate outside the working surface, and the utilization rate and the capacity of the equipment can be further improved.

And a pushing arm of the pushing machine is in sliding connection with a pushing guide rail on the scraper conveyor through a guide device. The distance from the scraper conveyor to the mine wall can be changed by applying a pushing and pulling force to the scraper conveyor through the pushing and moving arm. The pushing guide rail extends along the length direction of the scraper conveyor, so that the pushing machine can drive the scraper conveyor where the pushing machine passes to transversely move when walking along the length direction of the scraper conveyor, namely, the distance from each section of scraper conveyor to the mine wall is changed according to the requirement. In fig. 1 and 2, the pusher 23 reciprocates along the scraper conveyor and pushes the scraper conveyor passing by a certain depth toward the mine wall, thereby playing a pushing role. The pusher is adopted to complete the movement of the scraper conveyor, the degree of automation is high, the working efficiency is high, and the value and the advantage of the continuity of the mining process can be better embodied.

When a pusher is provided on the non-wall side of the face conveyor, the continuous mining system for large-sized strip mines can cyclically mine according to the following steps a-i:

a. as shown in fig. 2(1), during outward travel of the mining machine, the pusher jack rapidly follows behind the mining machine from the outer end of the inner section and pushes the passing scraper conveyor (referred to as the middle scraper conveyor) a cut-off distance toward the mine wall. The mining machine moves outwards to the outer end of the outer section and stops, the pusher jack rapidly moves outwards to the inner end of the outer section (namely the outer end of the mine wall of the working face) along with the mining machine and stops, and the scraper conveyor at the outer section forms an S-shaped bend when the pusher jack stops.

b. As shown in fig. 2(2), the pusher jack stops waiting at the inner end of the outer section, the miner travels inwardly from the outer end of the outer section through the S-bend, and when the miner reaches the inner end of the outer section, it begins to cut the wall laterally from the outer end of the face wall, begins the inward mining stroke, and then continues to travel inwardly.

c. As shown in fig. 2(3), when the mining machine reaches the inner end of the outer section, the pusher jack starts to walk from the inner end of the outer section to the outer end of the outer section, and simultaneously pushes the outer section scraper conveyor to the mine wall by a cutting distance, so that the S-bend is eliminated, and the mining machine stops after reaching the outer end of the outer section, and the mining machine continues to walk inwards in the process.

d. As shown in fig. 2(4), the pusher returns from the outer end of the outer section to the inner end of the outer section, in the process pushing the outer scraper conveyor a cut-off distance toward the mine wall while the miner continues to walk inward.

The step a completes the middle rear pushing mining process of the outward mining stroke of the mining machine. While steps b-d above complete the outer end side-feed mining process, what is achieved is how the miner initiates mining in the inward mining pass.

e. As shown in fig. 2(5), during the inward travel of the miner, the pusher quickly follows the rear of the miner from the inner end of the outer section while pushing the passing scraper conveyor (referred to as the middle scraper conveyor) a cut-off distance toward the mine wall. The mining machine travels inwards to the inner end of the inner section (namely the inner end of the mine wall of the working face) and stops, the inner end is ready for feeding, the pusher jack rapidly travels inwards to the outer end of the inner section along with the mining machine and stops, and the inner section scraper conveyor forms an S-shaped bend when the pusher jack stops.

f. As shown in fig. 2(6), the pusher jack stops at the outer end of the inner section and the miner travels outwardly from the inner end of the inner section through the S-bend, during which time the wall is cut by the shallow and deep inclines and the miner travels to the outer end of the inner section where the pusher jack stops.

g. As shown in fig. 2(7), the pusher jack travels inwardly from the outer end of the inner section and pushes the inner scraper conveyor a cutting distance toward the mine wall to eliminate the S-bend until the inner end of the inner section stops, during which the miner stops.

h. As shown in fig. 2(8), the pusher has stopped at the inner end of the inner section and the mining machine has moved inwards until it reaches the inner end of the inner section, during which the next cut-in insertion space is extracted.

i. As shown in fig. 2(9), the mining machine travels outward, and when the mining machine travels to the outer end of the inner section, the pusher jack starts to travel outward until the outer end of the inner section is reached, and simultaneously the inner scraper conveyor is pushed toward the mine wall by a cut-off distance, during which the mining machine continues to travel outward.

And e, completing the process of pushing and mining the middle part of the inward mining stroke of the mining machine. And steps f-i complete the inside end miter cut reciprocating feed mining process, which is how the miner initiates mining on the outward mining trip.

The middle rear pushing mining process, the outer end side feed mining process and the inner end beveling reciprocating feed mining process are carried out in a circulating and reciprocating mode to form the whole mining process.

As shown in fig. 3 and 4, when two pushing machines are arranged on the non-mine wall side of the scraper conveyor, the two pushing machines are different in labor division at the same time, one pushing machine follows behind the mining machine and pushes the passing scraper conveyor to a mine wall for a cutting distance, namely, the pushing scraper conveyor has the same function as the pushing machine 23 in fig. 1 and 2, the other pushing machine synchronously runs side by side on the side of the mining machine, and the distance between the passing scraper conveyor and the mine wall is adjusted, so that the mining machine keeps straight running as much as possible, a stable running or a deviation rectifying function of a running track of the mining machine is achieved, the stabilizing function is achieved simply, and the phenomenon that when the mining machine is subjected to a force to mine materials, the transverse sliding of the scraper conveyor causes the abnormal running reference of the mining machine to cause the cutting depth change can be avoided. When the machine has a stabilizing effect, the pusher jack can adjust the scraper conveyor at the position of the mining machine, and also can adjust the scraper conveyor in front of the mining machine in the walking direction, preferably the scraper conveyor in the rear, so that the lateral resistance is small during pushing, and the deviation can be corrected in advance. When the mining machine runs at two ends of the scraper conveyor in a reversing way, the two pushing machines are exchanged to divide work. The continuous mining system for large-sized blocked open pit mines can be used for carrying out mining circularly and reciprocally according to the following steps a-i:

a. as shown in fig. 4(1), during the process of the outer end pusher 22 and the mining machine 3 walking outward in parallel and synchronously, the inner end pusher 21 starts from the outer end of the inner section and quickly follows behind the mining machine to walk outward, and pushes the passing scraper conveyor (referred to as a middle scraper conveyor) to a cut distance toward the mine wall, the outer end pusher 22 and the mining machine 3 walking in parallel and synchronously to the outer end of the outer section and stop, the inner end pusher 21 follows to walk to the inner end of the outer section (i.e., the outer end of the mine wall of the working face) and stop, during the process of the inner end pusher 21, the scraper conveyor pushes the scraper conveyor to the mine wall by a cut distance, during the process, the inner end pusher 21 plays a pushing role, and when the inner end pusher 21 stops, the outer section scraper conveyor forms an S-turn.

b. As shown in fig. 4(2), the inner pusher 21 and the outer pusher 22 stop waiting at the inner end of the outer section and the outer end of the outer section respectively, the miner 3 travels inwardly through the S-bend from the outer end of the outer section, and as the miner returns to the inner end of the outer section, the miner begins to cut the wall laterally from the outer end of the face wall, beginning the inward mining stroke, while the inner pusher 21 begins to travel inwardly in parallel with the miner 3.

c. As shown in fig. 4(3), when the miner reaches the inner end of the outer section, the outer end pusher 22 pushes the outer section scraper conveyor a cut-back distance toward the mine wall to eliminate S-bending. During this process, the inner pusher 21 and the extraction machine 3 continue to run synchronously side by side inwards. From this step, the outer end pusher 22 is switched to the pushing action.

d. As shown in fig. 4(4), the outer end pusher 22 returns from the outer end of the outer section to the inner end of the outer section while pushing the outer section scraper conveyor a cut-off distance toward the mine wall, during which the inner end pusher 21 continues to move synchronously inward alongside the miner 3.

The step a completes the middle exchange stable pushing mining process in the outward mining stroke of the mining machine, and the inner end pusher and the outer end pusher respectively play a pushing role and a stabilizing role in the middle exchange stable pushing mining process. While steps b-d above complete the outer end side-feed mining process, what is achieved is how the miner initiates mining in the inward mining pass.

e. As shown in fig. 4(5), during the process of the inner end pusher 21 and the mining machine 3 walking inwards synchronously side by side, the outer end pusher 22 starts from the inner end of the outer section and quickly follows behind the mining machine to walk inwards, meanwhile, the passing scraper conveyor (referred to as a middle scraper conveyor) pushes a cutting distance towards the mine wall, the inner end pusher 21 and the mining machine 3 synchronously walk to the inner end of the inner section side by side (i.e. the inner end of the working face mine wall) to stop, an inner end cutter is prepared, the outer end pusher 22 then follows to walk to the outer end of the inner section to stop, and the inner scraper conveyor forms an S-turn when the outer end pusher 22 stops.

f. As shown in fig. 4(6), the inner end pusher 21 and the outer end pusher 22 stop waiting at the inner end of the inner section and the outer end of the inner section, respectively, and the miner travels outwardly from the inner end of the inner section through the S-bend and stops when the miner returns to the outer end of the inner section, i.e., the outer end pusher 22.

g. As shown in fig. 4(7), the inner end pusher 21 pushes the inner scraper conveyor a cut-off distance toward the mine wall to eliminate the S-bend. From this step, the inner end pusher 21 is switched to perform the pushing action.

h. As shown in fig. 4(8), the inner pusher and the outer pusher stop waiting at the inner end of the inner section and the outer end of the inner section, respectively, and the mining machine 3 moves inward until it reaches the inner end of the inner section, during which the next cut-in pushing space is extracted.

i. As shown in fig. 4(9), the mining machine 3 travels outwardly, and when traveling to the outer end of the inner section, the outer end pusher 22 begins to travel outwardly in synchronization with the mining machine 3 side by side, and the inner end pusher 21 then follows the mining machine to travel outwardly until reaching the outer end of the inner end, while pushing the inner section scraper conveyor a cut-off distance toward the mine wall. During this process the outer pusher 22 continues to walk synchronously outwards alongside the mining machine 3.

And e, completing the middle interchange stable pushing mining process in the inward mining process of the mining machine, wherein the inner end pusher and the outer end pusher respectively play a role in stabilizing and pushing. And steps f-i complete the inside end miter cut reciprocating feed mining process, which is how the miner initiates mining on the outward mining trip.

The middle interchange stable pushing mining process, the outer end side feed mining process and the inner end beveling reciprocating feed mining process are carried out in a circulating and reciprocating mode to form the whole mining process.

When the pushing machine is configured, the pushing machine is suitable for occasions where the weight of the mining machine is large, the walking speed is relatively low, and mining cutting reaction force cannot influence the stability of the conveying trough of the scraper conveyor, the pushing process is relatively simple, and the configuration target of a less-humanized working surface is realized. When two pushing machines are configured, the problems of stability of the mining machine and real-time pushing of the scraper conveyor can be solved simultaneously, and the mining machine is suitable for the condition that mining cutting counter force influences the stability of the scraper conveyor.

No matter which kind of above-mentioned equipment configuration, accomplish a circulation exploitation according to above-mentioned corresponding step promptly, can promote the distance of two cuts, the in-process scraper conveyor is in the state of carrying the mineral aggregate all the time. The movement of the scraper conveyor does not influence the conveying of mineral aggregate. And repeating the steps to perform circular mining, wherein continuous working face blanking, loading and mineral aggregate are formed and conveyed to the belt conveyor, and the belt conveyor is in a continuous operation state, so that the continuous operation of the system is finally formed.

For the two equipment configurations and the mining steps respectively implemented correspondingly, if conditions allow, the inner section of the scraper conveyor can also be enabled to inwards exceed the inner end of the mine wall of the working face, which is equivalent to that an equipment space with a horizontal distance B similar to the outer end is also arranged at the inner end, and a lateral feed mining mode can also be implemented at the inner end, so that the mining efficiency is greatly improved; conversely, the horizontal distance B of the outer end can be reduced to be small, so that the outer end can also adopt a beveling reciprocating feed mining mode similar to the inner end, and the space required by equipment arrangement is greatly reduced.

Fig. 1 and 3 show the layout of the large block open-pit continuous mining system for a single face, but in fact the large block open-pit continuous mining system can also be used for a double face (see fig. 5) or even more faces (see fig. 6), in particular: one set of scraper conveyor, one mining machine and one to two pusher conveyors form one set of continuous mining unit, the same set of belt conveyor 4 is matched with more than two sets of continuous mining units, all the continuous mining units are arranged on the same side of the belt conveyor, all the scraper conveyors are arranged in parallel, the outer end of the scraper conveyor of each set of continuous mining unit is connected with the same set of belt conveyor through a transition groove, all the continuous mining units are arranged in a dispersing way in a groove which is used for separating a region to be mined into a plurality of blocks which are arranged in a line shape, and one side or two side mine walls of each block facing the groove respectively correspond to one set of continuous mining unit. Several continuous mining units can form several mining working faces simultaneously.

As shown in fig. 5, the area to be mined is divided into two blocks, there being two sets of continuous mining units facing the face 1 and face 2 respectively, with their respective face conveyors advancing in opposite directions, the face 1 and face 2 being disposed face to face. As shown in fig. 6, the area to be mined is divided into three blocks, there are four sets of continuous mining units, each set being disposed in a trench, facing face 1, face 2, face 3 and face 4, respectively, and the two sets of face conveyors in the same trench are advanced in opposite directions. A set of continuous miner units can also be arranged in a single trench, and all scraper conveyors advance in the same direction.

The utility model discloses the "big blocking" of emphasizing means: when the area to be mined or the area of a single block is larger, the related equipment can continue to have longer continuous mining time once being laid, and the longer the effective mining operation time is, the shorter the moving auxiliary time of the belt conveyor is, so that the mining efficiency is higher, and the economical efficiency is better. Therefore, the system of the utility model is more suitable for a large area to treat the mining area or block. In addition, since the investment cost of a scraper conveyor is generally higher than that of a belt conveyor, it is preferable to use a shorter working face length a and a longer working face advancing length C or block working face advancing length D for higher economy.

In view of the above, when the area to be mined is only used as one block, as shown in fig. 1 and 3, the length a of the mine wall of the working face is preferably 200-. Correspondingly, the length of the belt conveyor is also 1000- & lt5000 & gt. The distance B from the outer end of the face wall to the belt conveyor may be 20-40 m.

When the area to be mined is divided into a plurality of blocks, as shown in fig. 5 and 6, the length a of the mine wall of the working face is preferably 200-1000m, and the advancing length C of the working face of the system is preferably 1000-5000 m. Correspondingly, the length of the belt conveyor is also 1000- & lt5000 & gt. The working face advancing length D of a single block is 500-3000 m. The distance B from the outer end of the face wall to the belt conveyor may be 20-40 m. As long as the conveying capacity of the belt conveyor 4 is large enough, the productivity and the mining efficiency of the multi-working-surface can be improved by times compared with the single working surface.

The utility model discloses the characteristics of "big blocking" that are suitable for can provide the feasibility for the synchronous peeling off of top ground. Because the areas of the areas and the blocks to be mined can be large, mining can be carried out while stripping as long as a small part of rock stratum is stripped in advance so that mining can be carried out, mining can be kept continuously as long as the stripping speed is not less than the mining speed, and mining does not need to be stopped to wait for stripping. The mining and stripping work at the same time without mutual influence, so that the whole or most of the stripping in advance is not needed to cause excessive pre-mining investment.

In addition, each block supports sub-bench mining, and when the sub-bench mining is involved, the continuous mining units for the same block are arranged in a sub-bench manner, and mineral aggregates on the working face of each bench are continuously conveyed from the outer end of the working face mine wall to the belt conveyor through the aqueduct or the belt transfer conveyor.

The self-propelled pusher jack described herein may include a pusher jack and a running gear, the pusher jack being carried on the running gear. The pushing mechanism is used for short-distance movement of heavy objects, is widely applied to various industrial fields, can directly adopt the existing pushing mechanism, such as a hydraulic support pushing mechanism, and most of the existing pushing mechanisms can be used for directly or indirectly transversely moving pushed objects by utilizing the extension of a piston cylinder and can be pushed and pulled. The walking system can adopt a wheeled engineering machinery walking system, and preferably adopts a crawler type engineering machinery walking system. The walking system carries the pushing mechanism to walk along the mine wall, and can realize the transverse push-pull while walking longitudinally. The walking system can walk linearly and curvedly, namely, the walking system also has transverse movement capability, so that telescopic structures such as piston cylinders and the like are not necessary structures of the pushing mechanism.

Claims (10)

1. The utility model provides a large-area massing strip mine continuous mining system which characterized in that: including scraper conveyor and mining machine, scraper conveyor lays along working face ore wall side, scraper conveyor outwards carries the mineral aggregate by interior, scraper conveyor's outer end surpasss the outer end of working face ore wall, the mining machine rides and locates on the scraper conveyor, and with scraper conveyor straight line sliding connection, sliding direction follow scraper conveyor's extending direction, and the mining machine corresponds outside exploitation stroke to the one-way walking process of the outer end to the inner end of ore wall, and the mining machine corresponds the exploitation stroke inwards along the one-way walking process of the outer end to the inner end of ore wall, scraper conveyor's non-ore wall side is provided with the pusher jack that can walk by oneself, the pusher with scraper conveyor straight line sliding connection through its guider.

2. The continuous mining system of a large blocked surface mine of claim 1, wherein: the scraper conveyor comprises one or more conveyor trough groups, each conveyor trough group is formed by sequentially connecting a plurality of conveyor troughs, a certain trough distance is kept between every two adjacent conveyor troughs, the two adjacent conveyor troughs are flexibly connected through a connecting piece, an independent power device is arranged on the head end conveyor trough or the tail end conveyor trough of each conveyor trough group, when a plurality of conveyor trough groups exist, the conveyor trough groups are sequentially connected, the two conveyor troughs mutually connected with the adjacent conveyor trough groups are rigidly connected, and a push guide rail is arranged on the non-ore wall side of each conveyor trough.

3. The continuous mining system of a large blocked surface mine of claim 2, wherein: the pushing arm of the pushing machine is connected with the pushing guide rail in a sliding mode through the guide device, and the guide device is a guide wheel.

4. The continuous mining system of a large blocked surface mine of claim 3, wherein: the mining machine comprises a walking support mechanism which is in sliding fit with a walking track positioned at the top of the conveying trough.

5. The continuous mining system of a large blocked surface mine of claim 3, wherein: the scraper conveyor is divided into an inner section, a middle section and an outer section in sequence, the outer section is just positioned outside the outer end of the working face mine wall, and the inner section is just positioned inside the inner end of the working face mine wall or opposite to the inner section of the working face mine wall.

6. The continuous mining system of a large blocked surface mine of claim 3, wherein: one or two pusher jacks are arranged.

7. The continuous mining system of a large blocked surface mine of claim 3, wherein: the pusher jack comprises a pusher jack and a traveling system, and the pusher jack is carried on the traveling system.

8. The continuous mining system of a large blocked surface mine of claim 7, wherein: the walking system adopts a crawler-type engineering machinery walking system.

9. The continuous mining system for a large block open pit mine of claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein: the mining face scraper conveyor is characterized by further comprising a rubber belt conveyor, wherein the rubber belt conveyor is fixedly arranged on the ground, the extending direction of the rubber belt conveyor is perpendicular to the scraper conveyor, the rubber belt conveyor keeps a certain distance from the outer end of the mine wall of the working face, and the outer end of the scraper conveyor is connected with the rubber belt conveyor through a transition groove or a belt transfer conveyor.

10. The continuous mining system of a large blocked surface mine of claim 9, wherein: the continuous mining machine set comprises a set of scraper conveyor, a mining machine and one to two pusher conveyors, the same set of belt conveyor is matched with more than two sets of continuous mining machine sets, all the continuous mining machine sets are arranged on the same side of the belt conveyor, all the scraper conveyors are arranged in parallel, all the continuous mining machine sets are dispersedly arranged in a groove for dividing a region to be mined into a plurality of blocks arranged in a straight line, and one side or two side mine walls of each block facing the groove respectively correspond to one set of continuous mining machine sets.

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