An open-pit coal mining device suitable for high-altitude areas

Abstract

The present application relates to coal mining equipment technical field, specifically disclose a kind of open coal mining device suitable for high altitude area, comprising: travelling mechanism;Crushing mechanism, including being arranged in the roller of travelling mechanism end portion, the crushing tooth of being arranged in the periphery of roller and the first power element of driving roller rotation;Collecting mechanism;Including being arranged in the shovel of travelling mechanism end portion and being located below crushing mechanism, the turntable of being symmetrically rotationally connected in shovel and the second power element of driving turntable rotation;Conveying mechanism, including first conveyor belt, conveying roller and second conveyor belt being sequentially arranged on travelling mechanism, and the feed end of first conveyor belt is communicated with the end portion of shovel;Melting selection mechanism, including hot air plate being arranged on travelling mechanism and being located above conveying roller, collecting groove being located below conveying roller and ventilation assembly, hot air is supplied to hot air plate, solve the problem of water and soil loss of construction position caused by unified breaking frozen soil layer and coal mine in traditional open coal mining in high altitude area.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of coal mining equipment, and particularly discloses an open-pit coal mining device suitable for high-altitude areas. BACKGROUND

[0002] The open-pit coal mining in high-altitude areas faces unique natural environment challenges, and the characteristics and technical difficulties mainly lie in the following aspects: firstly, the extremely harsh natural environment causes serious challenges to the coal mining process, the average annual temperature in the high-altitude area is lower than 0 DEG C, and the frozen soil layer is deep, which leads to a significant increase in excavation cost; secondly, the ecology in the high-altitude area is extremely fragile, and the surface frozen soil layer is inevitably damaged in the coal mining process, which easily affects the soil structure and causes water and soil loss; thirdly, the excavated coal blocks contain a large amount of frozen soil, and the transportation cost is high, the subsequent sorting steps are numerous, and the processing time is long.

[0003] In summary, the main technical difficulty of the open-pit coal mining in high-altitude areas is the frozen soil environment in the high-altitude area, and currently, the following coal mining means are usually used for the open-pit coal mining in high-altitude areas: firstly, the frozen soil layer is first broken, and then the coal mine is excavated; this method can reduce the impurity content of the excavated coal blocks, soften the soil, and reduce the excavation difficulty, but multiple reciprocating hot water spraying is needed for the thawing of the frozen soil layer, the cost is high, and the thawing of the frozen soil layer leads to poor construction conditions of the coal mining site, which easily causes the phenomenon of vehicle sinking in mud and skidding, and in the area with low temperature, the thawing effect of the frozen soil layer is not obvious, and even the phenomenon of more soil surface icing caused by hot water spraying may occur; secondly, the frozen soil layer and the coal mine are broken at the same time in the excavation process, the construction conditions of the site are better, but the broken coal blocks and the frozen soil layer are difficult to separate, and usually, the separation needs to be carried out after unified transportation in the subsequent steps, which not only easily causes the water and soil loss of the construction position, but also increases the transportation and subsequent processing cost, and therefore, the application provides the open-pit coal mining device suitable for high-altitude areas to solve the above problems. SUMMARY

[0004] The application aims to solve the problem that in the traditional open-pit coal mining in high-altitude areas, the unified breaking of the frozen soil layer and the coal mine easily causes the water and soil loss of the construction position and increases the transportation and subsequent processing cost.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the application provides an open-pit coal mining device suitable for high-altitude areas, which comprises:

[0006] a walking mechanism;

[0007] a breaking mechanism comprising a roller provided at the end of the walking mechanism, breaking teeth provided at the circumferential end of the roller, and a first power member for driving the roller to rotate;

[0008] The collecting mechanism comprises a shovel arranged at the end of the walking mechanism and below the crushing mechanism, a dial symmetrically connected in the shovel and a second power member driving the dial to rotate;

[0009] The conveying mechanism comprises a first conveying belt, a conveying roller and a second conveying belt arranged on the walking mechanism in sequence, and the feeding end of the first conveying belt is communicated with the end of the shovel;

[0010] The melting and separating mechanism comprises a hot air plate arranged on the walking mechanism and above the conveying roller, a collecting groove below the conveying roller and a ventilation assembly supplying hot air to the hot air plate

[0011] The principle and effect of the basic scheme are that:

[0012] Compared with the prior art, the frozen soil layer and the coal mine are uniformly broken, so as to avoid the problem that the construction condition of the coal mining site is deteriorated due to the melting of the frozen soil, the coal mine can be collected at a lower cost in a high-altitude area with low temperature, and the frozen soil after crushing is melted by the melting and separating mechanism, so as to separate the frozen soil and the coal block from each other, thereby reducing the subsequent conveying cost and processing cost, and timely collection and melting treatment of the frozen soil can reduce the water and soil loss of the coal mining site without changing the construction condition of the coal mining site, so as to avoid damaging the soil environment of the coal mining site, and effectively solve the problem that the uniform breaking of the frozen soil layer and the coal mine easily causes the water and soil loss of the construction position, and increases the transportation and subsequent processing cost in the traditional open-pit coal mining in a high-altitude area.

[0013] Further, the feeding end of the conveying roller is lower than the discharging end of the first conveying belt;

[0014] The discharging end of the conveying roller is higher than the feeding end of the second conveying belt.

[0015] The setting mode facilitates the transportation of the frozen soil and the coal block along the first conveying belt to the conveying roller, facilitates the transportation of the coal block separated from the frozen soil along the conveying roller to the second conveying belt, and facilitates the transportation to the next processing position.

[0016] Further, the ventilation assembly comprises a gas tank and a vortex tube communicated with the gas tank, a cooling pipeline communicated with a cold end of the vortex tube, a hot air pipeline communicated with a hot end of the vortex tube, a ventilation cavity in the hot air plate communicated with the hot air pipeline, and a plurality of air outlets provided on a side of the hot air plate facing the conveying roller. The setting mode effectively utilizes the characteristics of the vortex tube that cold air is supplied at one end and hot air is supplied at the other end, so that the cold air of the vortex tube is used for heat dissipation and cooling of the power parts such as the walking mechanism and the crushing mechanism, and at the same time, the hot air melts the frozen soil on the conveying roller through the hot air plate to realize the separation of the frozen soil and the coal lumps; and in the low-temperature environment of high-altitude areas, the high-pressure gas in the gas tank can keep a relatively low temperature, so as to facilitate the generation of hot air and cold air through the vortex tube.

[0017] Further, the collecting tank comprises a bottom frame provided on the walking mechanism and an inner frame provided in the bottom frame, a drainage gap is formed between the inner wall of the bottom frame and the outer wall of the inner frame, and the outer wall of the bottom frame is provided with a drainage pipeline communicated with the drainage gap. The setting mode can effectively separate the water flow generated in the process of melting the frozen soil from the soil, so that the water flow overflows from the edge of the inner frame and enters the drainage gap, and the soil is deposited at the bottom of the inner frame and collected.

[0018] Further, the inner frame is further provided with an air guide pipeline communicated with the hot air pipeline, a plurality of air guide holes are provided on the side wall of the air guide pipeline, a partition plate is provided in the drainage gap, the partition plate divides the drainage gap into a foam discharge cavity and a bottom mud discharge cavity, and the drainage pipeline comprises a foam discharge pipeline and a bottom mud discharge pipeline communicated with the foam discharge cavity and the bottom mud discharge cavity respectively. The supply of hot air to the inner frame not only prevents ice debris from falling into the inner frame, which causes the surface temperature of the liquid in the inner frame to be too low and ice to form, but also forms air bubbles in the inner frame, adsorbs the residual coal powder in the soil, and makes the coal powder and the foam mixed and enter the foam discharge cavity, thereby effectively realizing the collection and utilization of the coal powder in the soil.

[0019] Further, the melting and separating mechanism further comprises a solvent adding assembly for adding a collector and a foaming agent to the air guide pipeline, which comprises a Venturi tube provided between the hot air pipeline and the air guide pipeline, a solvent pipe communicated with the side wall of the diffusion end of the Venturi tube, and a solvent tank communicated with the solvent pipe. The setting of the Venturi tube makes the high-speed hot air flowing out of the vortex tube form a negative pressure environment for the solvent pipe when entering the Venturi tube, thereby adsorbing the solvent in the solvent tank through the solvent pipe, achieving the purpose of automatic supply of the solvent, so as to mix the coal powder with the foam and float up, and further improve the collection and utilization of the coal powder in the soil.

[0020] Further, the bottom frame outer wall is further provided with an air cavity communicated between the hot air pipeline and the Venturi tube, a fan blade driven by air flow is rotatably connected in the air cavity, and a paddle shaft driven to rotate by the fan blade is rotatably connected in the inner frame.

[0021] Further, the paddle shaft rotates from the middle part of the inner frame to the edge of the inner frame, coaxially connected with two gears located outside the outer frame body and engaged with each other, the drainage gap is further provided with a liquid drainage bin, the middle part of the inner frame is provided with a plurality of liquid drainage openings communicated with the liquid drainage bin, and the drainage pipeline further comprises a liquid drainage pipeline communicated with the liquid drainage bin.

[0022] Based on the same inventive concept, the present application provides an open coal mining method suitable for high-altitude areas, which comprises using the open coal mining device to perform open coal mining in high-altitude areas.

[0023] Further, the steps of using the open coal mining device to perform open coal mining in high-altitude areas are as follows:

[0024] Step S1, driving the walking mechanism so that the roller of the crushing mechanism approaches the coal seam;

[0025] Step S2, driving the crushing mechanism so that the roller crushes the coal seam;

[0026] Step S3, driving the walking mechanism so that the bucket collects the crushed coal and frozen soil and is driven to the first conveying belt by the driving plate;

[0027] Step S4, the coal and frozen soil flow to the conveying roller through the first conveying belt, the hot air plate supplies hot air to the surface of the conveying roller, the frozen soil is melted, the frozen soil is separated from the coal, and the melted frozen soil falls into the collecting groove for centralized collection;

[0028] Step S5, the coal separated from the frozen soil is transported to the second conveying belt by the conveying roller and enters the subsequent processing process.

[0029] Compared with the prior art, the method uniformly breaks the frozen soil layer and the coal mine to avoid the problem that the melting of the frozen soil leads to the poor construction condition of the coal mining site, can collect the coal mine in a high-altitude area with lower cost and lower temperature, and melts the broken frozen soil through the melting and sorting mechanism to separate the frozen soil and the coal block from each other, thereby reducing the subsequent conveying cost and processing cost, and timely frozen soil collection and melting treatment can reduce the water and soil loss of the coal mining site without changing the construction condition of the coal mining site, thereby avoiding the damage to the soil environment of the coal mining site, and effectively solving the problems that the uniform breaking of the frozen soil layer and the coal mine in the traditional open-pit coal mining in a high-altitude area easily leads to the water and soil loss of the construction position and increases the cost of transportation and subsequent processing BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment 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.

[0031] Figure 1 A schematic diagram of an open-pit coal mining device suitable for a high-altitude area according to an embodiment of the present application is shown;

[0032] Figure 2 A schematic diagram of a crushing mechanism in an open-pit coal mining device suitable for a high-altitude area according to an embodiment of the present application is shown;

[0033] Figure 3 A schematic diagram of a melting and sorting mechanism in an open-pit coal mining device suitable for a high-altitude area according to an embodiment of the present application is shown;

[0034] Figure 4 A cross-sectional view of a collection groove in an open-pit coal mining device suitable for a high-altitude area according to an embodiment of the present application is shown;

[0035] Figure 5 A schematic diagram of a ventilation assembly in an open-pit coal mining device suitable for a high-altitude area according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0036] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined application purposes, the specific embodiments, structures, features and effects according to the present application will be described in detail below with reference to the drawings and preferred embodiments.

[0037] The reference signs in the drawings of the specification include: walking mechanism 1, crushing mechanism 2, end roller 201, middle roller 202, roller support 203, connecting plate 204, sleeve 205, crushing tooth 206, collecting mechanism 3, dial 4, first conveying belt 5, second conveying belt 6, bottom frame 7, conveying roller 8, roller frame 9, hot air plate 10, hot air pipe 11, connecting pipe 12, gear box 13, air disc 14, air guide branch pipe 15, liquid discharge pipe 16, foam discharge pipe 17, bottom mud discharge pipe 18, inner frame 19, partition 20, foam discharge cavity 21, bottom mud discharge cavity 22, paddle shaft 23, liquid discharge bin 24, air guide pipe 25, vortex pipe 26, Venturi pipe 27, solvent tank 28.

[0038] An open-pit coal mining device suitable for high-altitude areas, which implements, for example Figure 1 as shown: including walking mechanism 1, crushing mechanism 2 provided on walking mechanism 1 for crushing coal mines and permafrost layers, collecting mechanism 3 for collecting crushed coal blocks and permafrost blocks, conveying mechanism for conveying coal blocks and permafrost blocks, and thawing mechanism for screening coal blocks and permafrost blocks.

[0039] The walking mechanism 1 adopts a tracked vehicle which is more practical in high-altitude areas, such as Figure 2 As shown, the crushing mechanism 2 includes a roller support 203 provided at the front end of the tracked vehicle, a roller rotatably connected to the roller support 203, and a first power member for driving the roller to rotate, wherein the roller includes a middle roller and an end roller 201, the outer walls of the middle roller and the end roller 201 are staggered with a plurality of crushing teeth 206, the middle roller and the end roller 201 are connected by a shaft body, the roller support 203 is provided with a sleeve 205 between the ends of the middle roller and the end roller 201 through a connecting plate 204, the ends of the middle roller and the end roller 201 are rotatably connected along the ends of the sleeve 205, the shaft body penetrates into the inside of the sleeve 205, the first power member adopts two roller motors installed between the rollers, the output shafts of the two roller motors extend into the sleeve 205 through the roller support 203 and the connecting plate 204 and are connected to the shaft body through a bevel gear pair, and the roller support 203 is connected to the tracked vehicle through a hydraulic arm.

[0040] As shown in Figure 1 The collecting mechanism 3 includes a bucket provided at the front end of the tracked vehicle and below the crushing mechanism 2, a dial 4 symmetrically rotatably connected in the bucket, and a second power member for driving the dial 4 to rotate, the bucket is inclinedly arranged, the front end to the rear end of the bucket is inclined upward, the second power member adopts a dial steering engine installed on the back side of the bucket, the output shafts of the dial steering engine penetrate through the bucket and are connected to the dial 4 respectively, and the dial 4 is provided with a plurality of paddles.

[0041] As shown in Figure 1As shown, the conveying mechanism includes a first conveying belt 5, a conveying roller 8 and a second conveying belt 6 arranged in sequence on the frame of the tracked vehicle, wherein the feeding end of the first conveying belt 5 extends into the bucket and communicates with the gap between the two paddles 4, the discharging end of the first conveying belt 5 is higher than the feeding end of the conveying roller 8, the discharging end of the conveying roller 8 is higher than the feeding end of the second conveying belt 6, and the second conveying belt 6 is arranged upwardly inclined to transport the coal blocks to the next processing position, such as the hopper of a loading vehicle. The first conveying belt 5, the conveying roller 8 and the second conveying belt 6 are respectively driven by a conveying motor to rotate the pulleys and rollers in the same direction, and the adjacent rollers are connected by chain transmission.

[0042] As shown in the drawings, Figure 3 The melting and sorting mechanism includes a collection tank mounted on the frame of the tracked vehicle below the conveying roller 8, a hot air plate 10 arranged above the conveying roller 8, and a ventilation assembly for supplying hot air to the hot air plate 10. The width of the collection tank is wider than the width of the conveying roller 8, and the roller frame 9 of the conveying roller 8 is provided with baffles to prevent coal blocks and frozen soil from falling into the collection tank from both sides of the conveying roller 8, and the hot air plate 10 is installed between the top of the two baffles.

[0043] As shown in the drawings, Figure 4 The collection tank includes a bottom frame 7 arranged on the frame of the tracked vehicle through a plurality of shock absorbers and an inner frame 19 arranged in the bottom frame 7, a drainage gap is formed between the inner wall of the bottom frame 7 and the outer wall of the inner frame 19, and the outer wall of the bottom frame 7 is provided with a drainage pipeline communicating with the drainage gap, wherein a drainage tank 24 and a partition plate 20 are arranged in the drainage gap, the drainage tank 24 surrounds the outer wall of the inner frame 19, and the middle part of the front and rear sections of the inner frame 19 is provided with a plurality of drainage openings communicating with the drainage tank 24, and the partition plate 20 divides the drainage gap into a foam discharge chamber 21 and a bottom mud discharge chamber 22, and the bottom of the inner frame 19 is provided with a through slot communicating with the bottom mud discharge chamber 22. The drainage pipeline includes a drainage pipeline 16 communicating with the drainage tank 24, a foam discharge pipeline 17 communicating with the foam discharge chamber 21, and a bottom mud discharge pipeline 18 communicating with the bottom mud discharge chamber 22. The drainage pipeline 16, the foam discharge pipeline 17 and the bottom mud discharge pipeline 18 are all connected with control valves, and during operation, the drainage pipeline 16 and the foam discharge pipeline 17 are in a normally open state, and the bottom mud discharge pipeline 18 is opened periodically and filters the soil through a filter.

[0044] Correspondingly, a plurality of air guide pipelines 25 supplied with hot air by the ventilation assembly are arranged in the inner frame 19, the side wall of the air guide pipeline 25 is provided with a plurality of air guide holes, and two paddle shafts 23 are symmetrically and rotatably connected in the inner frame 19, a plurality of paddles are arranged on the paddle shaft 23, and the paddle shaft 23 is coaxially connected with gears located outside the outer frame body and meshing with each other, as shown in the drawings, Figure 3As shown, the gear is installed by the gear box 13 protection, the gear box 13 outside is also installed with a gas disc 14, the gas cavity is formed in the gas disc 14, the fan blade driven by the airflow is arranged in the gas cavity, and the fan blade shaft of the fan blade is coaxially connected with one of the paddle shafts 23.

[0045] As shown in the figure, Figure 5 As shown, the ventilation assembly includes a gas tank and a vortex tube 26 communicated with the gas tank, the cold end of the vortex tube 26 is communicated with a cooling pipeline, and the hot end of the vortex tube 26 is communicated with a hot air pipeline 11; the cooling pipeline is used for heat dissipation and cooling of the power part such as the walking mechanism 1 and the crushing mechanism 2; the end of the hot air pipeline 11 is communicated with the hot air plate 10, and the hot air plate 10 is provided with a plurality of air outlets on the side facing the conveying roller 8; a hot air branch pipe is further arranged on the hot air pipeline 11, the hot air branch pipe is communicated with the gas disc 14 through the connecting pipe 12, and the hot air branch pipe is communicated with the solvent adding assembly after penetrating out of the gas disc 14; the solvent adding assembly includes a Venturi tube 27 communicated with the connecting pipe 12, a solvent pipe communicated with the side wall of the diffusion end of the Venturi tube 27, and a solvent tank 28 communicated with the solvent pipe; the solvent pipe and the solvent tank 28 are two respectively, which are used for supplying the collecting agent and the foaming agent respectively; the end of the Venturi tube 27 is communicated with the air guide pipeline 25 in the inner frame 19 through a plurality of air guide branch pipes 15.

[0046] Based on the same inventive concept, the embodiment provides an open-pit coal mining method suitable for high-altitude areas, which comprises using the open-pit coal mining device to perform open-pit coal mining in a high-altitude area, and the steps are as follows:

[0047] Step S1, driving the crawler, and adjusting the hydraulic arm to make the roller of the crushing mechanism 2 close to the coal seam;

[0048] Step S2, starting the roller motor, and driving the intermediate roller and the end roller 201 to rotate through the bevel gear pair, so that the crushing teeth 206 on the roller crush the coal seam and the frozen soil layer;

[0049] Step S3, driving the crawler, collecting the crushed coal and frozen soil by the bucket while crushing the coal mine, and rotating the dial plate 4 by the steering wheel of the dial plate 4, and the dial block on the dial plate 4 moves the crushed frozen soil and coal to the first conveying belt 5;

[0050] Step S4, coal and frozen soil blocks flow through the first conveyor belt 5 to the conveying roller 8, the vortex tube 26 supplies hot air to the hot air plate 10, and the hot air is supplied to the surface of the conveying roller 8 through the air outlet holes on the hot air plate 10 to melt the frozen soil, so that the frozen soil is separated from the coal blocks, and the melted frozen soil falls into the collection tank for centralized collection; In this process, the cold air of the vortex tube 26 is used to cool and cool the power parts such as the walking mechanism 1 and the crushing mechanism 2; and, the high-speed hot air flowing out of the vortex tube 26 forms a negative pressure environment for the solvent pipe when entering the Venturi tube 27, and then absorbs the solvent in the solvent tank 28 through the solvent pipe, mixes the collecting agent and the foaming agent with the airflow, and then enters the inner frame 19 through the air guide pipe 25 to form bubbles, and uses the natural hydrophobicity of coal powder and the hydrophilic property of clay to mix the foam with the coal powder and float to the surface of the liquid. At the same time, the high-speed hot air flowing out of the vortex tube 26 also drives the paddle shaft 23 to rotate through the fan blades, and the paddle shaft 23 rotates from the middle of the inner frame 19 to the edge of the inner frame 19 to stir the liquid in the inner frame 19, and the foam is stirred to both sides of the inner frame 19, and the body of the walking mechanism 1 is shaken during the coal mining process. The foam is pushed out from both sides of the inner frame 19, and the excess liquid is directly discharged from the liquid discharge port, the liquid discharge bin 24 and the liquid discharge pipe 16, and part of the liquid enters the foam discharge chamber 21 with the paddle shaft 23. Push the foam to flow and take the foam out from the foam discharge pipe 17; the mud is deposited at the bottom of the inner frame 19 and is collected regularly through the bottom mud discharge pipe 18 and is filtered.

[0051] Step S5, the coal blocks separated from the frozen soil are transported by the conveying roller 8 to the second conveyor belt 6 and enter the subsequent processing process.

[0052] Compared with the prior art, the frozen soil layer and the coal mine are uniformly broken in the embodiment to avoid the problem that the melting of the frozen soil causes the construction conditions of the coal mining site to deteriorate, and the coal mine can be collected at a lower cost in a high-altitude area with lower temperature. And the frozen soil is melted by the melting mechanism after being crushed to separate the frozen soil and the coal blocks from each other, thereby reducing the subsequent transportation and processing costs, and timely collection and melting of the frozen soil can reduce water and soil loss at the coal mining site without changing the construction conditions of the coal mining site, thereby avoiding damage to the soil environment of the coal mining site, effectively solving the problem that uniform breaking of the frozen soil layer and the coal mine in traditional open-pit coal mining in high-altitude areas easily causes water and soil loss at the construction site, and increases the cost of transportation and subsequent processing. Moreover, the flotation method effectively realizes the collection and utilization of coal powder in the mud.

[0053] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any indirect modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. An open-pit coal mining device suitable for high-altitude areas, characterized in that, include: Walking mechanism; The crushing mechanism includes a roller located at the end of the traveling mechanism, crushing teeth located at the periphery of the roller, and a first power component for driving the roller to rotate. Collection agency; It includes a bucket located at the end of the traveling mechanism and below the crushing mechanism, a dial symmetrically rotatably connected inside the bucket, and a second power component that drives the dial to rotate. The conveying mechanism includes a first conveyor belt, a conveying roller, and a second conveyor belt sequentially mounted on the traveling mechanism, wherein the feed end of the first conveyor belt is connected to the end of the bucket. The fusion separation mechanism includes a hot air plate mounted on the traveling mechanism and located above the conveying roller, a collection trough located below the conveying roller, and a ventilation assembly for supplying hot air to the hot air plate. The ventilation assembly includes an air tank and a vortex tube connected to the air tank. The cold end of the vortex tube is connected to a cooling pipe, and the hot end of the vortex tube is connected to a hot air pipe. The hot air plate has a ventilation cavity connected to the hot air pipe, and the side of the hot air plate facing the conveying roller has several air outlets. The collection tank includes a bottom frame mounted on a walking mechanism and an inner frame located within the bottom frame. A drainage gap is formed between the inner wall of the bottom frame and the outer wall of the inner frame. The outer wall of the bottom frame is provided with a drainage pipe communicating with the drainage gap. The bottom of the inner frame is also provided with an air guide pipe communicating with a hot air pipe. The side wall of the air guide pipe is provided with several air guide holes. A partition is provided in the drainage gap, which divides the drainage gap into a foam discharge chamber and a bottom mud discharge chamber. The drainage pipe includes a foam discharge pipe and a bottom mud discharge pipe communicating with the foam discharge chamber and the bottom mud discharge chamber, respectively. The fusion separation mechanism also includes a solvent addition assembly for adding collectors and foaming agents to the air delivery pipe, comprising a Venturi tube disposed between the hot air pipe and the air delivery pipe, a solvent tube connected to the diffuser end sidewall of the Venturi tube, and a solvent tank connected to the solvent tube.

2. The open-pit coal mining device suitable for high-altitude areas according to claim 1, characterized in that, The feed end of the conveying roller is lower than the discharge end of the first conveyor belt; The discharge end of the conveying roller is higher than the feed end of the second conveyor belt.

3. The open-pit coal mining device suitable for high-altitude areas according to claim 1, characterized in that, The outer wall of the bottom frame is also provided with an air cavity connecting the hot air duct and the Venturi tube. A fan blade driven by the airflow is rotatably connected in the air cavity, and a blade shaft driven by the fan blade is rotatably connected in the inner frame.

4. The open-pit coal mining device suitable for high-altitude areas according to claim 3, characterized in that, The blade shaft rotates from the middle of the inner frame toward the edge of the inner frame. The two blade shafts are coaxially connected to gears located outside the outer frame and meshing with each other. A drain chamber is also provided in the drain gap. Several drain ports communicating with the drain chamber are provided in the middle of the inner frame. The drain pipe also includes a drain pipe communicating with the drain chamber.

5. A method for open-pit coal mining suitable for high-altitude areas, characterized in that, This includes open-pit coal mining in high-altitude areas using any of the open-pit coal mining apparatus described in claims 1-4.

6. The open-pit coal mining method suitable for high-altitude areas according to claim 5, characterized in that, The steps for conducting open-pit coal mining in high-altitude areas using the open-pit coal mining apparatus according to any one of claims 1-4 are as follows: Step S1: Drive the traveling mechanism to bring the rollers of the crushing mechanism closer to the coal seam; Step S2: Drive the crushing mechanism so that the rollers crush the coal seam; Step S3: Drive the traveling mechanism so that the bucket collects the crushed coal and frozen soil and moves it to the first conveyor belt by the dial. In step S4, the coal and frozen soil flow through the first conveyor belt to the conveyor roller. The hot air plate supplies hot air to the surface of the conveyor roller to melt the frozen soil, causing the frozen soil to separate from the coal. The melted frozen soil falls into the collection trough for collection. In step S5, the coal blocks separated from the frozen soil are transported to the second conveyor belt via conveyor rollers for subsequent processing.

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