Continuous coal mining process and equipment for slope working face of strip mine

Abstract

The invention relates to a continuous coal mining process and equipment for a slope working face of a strip mine. The equipment mainly comprises a foundation mounting part, a transfer part, a roller cutting part, a walking part and an on-slope supporting vehicle. The cutting posture of the roller cutting part is adjusted through the main rocker arm, the auxiliary rocker arm and the hydraulic system, the cutting roller can slide up and down along the main rocker arm to adapt to different coal seam thicknesses and dip angles, and the flexibility of coal mining operation is improved. The on-slope supporting vehicle is in linkage with the main rocker arm, the operation height and angle of the equipment can be adjusted, and stable supporting is provided by sliding along the slope surface. The transferring part achieves cleaning, collecting and conveying of coal through a U-shaped scraper conveyor, and a flow sensor is arranged to monitor the coal flow condition in real time. The walking part is of a crawler belt structure and has an automatic adjusting function, and the stability and the adaptive capacity of the equipment are improved. Through optimization design and intelligent control, the operation efficiency and reliability are improved, and the system is suitable for continuous coal mining operation under complex terrains.

Description

Technical Field

[0001] The present invention relates to the field of open-pit coal mining technology, and in particular to a novel open-pit slope working face continuous coal mining process and equipment, which is used for coal mining and material transportation under complex open-pit conditions and can realize an efficient, safe and environmentally friendly coal mining operation process. Background Art

[0002] As one of the open-pit coal mining equipment, the double-drum coal mining machine is mainly used for mining and transportation of coal seams. Traditional coal mining machines adopt a single-drum or double-drum structure, which cuts the coal seams by rotating the drums, and relies on conveying devices to transport the mined coal to the designated area. However, when faced with complex open-pit mine slopes, the flexibility and adaptability are poor, making it difficult to efficiently handle coal seams of different thicknesses, and the lack of walking stability of the equipment increases the difficulty of operation and safety hazards.

[0003] With the increasing demand for coal mining, the operating efficiency and safety of traditional coal mining equipment can no longer meet the requirements of modern open-pit mine operations. Therefore, it is urgent to design a new type of coal mining equipment that can flexibly adjust the drum cutting angle and adapt to different terrains and coal seam thicknesses, improve equipment operation stability and coal transportation efficiency, which is of great significance to improving coal mining efficiency and ensuring operation safety. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a new double-drum continuous coal mining machine that can adapt to the complex terrain of open-pit coal mining, reduce the equipment running resistance, and improve the coal cutting efficiency and equipment stability. The present invention optimizes the structural design to enable the equipment to have good terrain adaptability, while improving the operational flexibility and coal collection efficiency, thereby effectively reducing the wear of the equipment, extending the service life of the equipment, and ensuring the efficiency and safety of open-pit coal mining operations. The technical scheme is as follows: a continuous coal mining process and equipment for an open-pit mine slope working face, comprising a basic installation part, a transfer part, a drum cutting part, a walking part and an on-slope support vehicle; the drum cutting part is installed on the basic installation part, comprising a chassis, a main rocker arm, an auxiliary rocker arm, a left cutting drum, a right cutting drum, a sliding system and a hydraulic system; the left cutting drum and the right cutting drum slide up and down along the main rocker arm through the sliding system, which can adapt to the height and inclination of different coal seams; the main rocker arm slides left and right through the main rocker arm sliding mechanism, and cooperates with the auxiliary rocker arm to slide up and down along the main rocker arm to adjust the working position of the drum cutting part, thereby expanding the coverage of the coal mining equipment; during the operation, the main rocker arm can realize all-round coal collection through the sliding mechanism, and the drum cutting part cuts obliquely to accurately control the cutting depth and direction to adapt to different coal seam thicknesses and hardnesses; the drum cutting part is equipped with an automatic compensation system to adjust the cutting posture in real time according to changes in coal seam thickness and hardness; the main rocker arm and the auxiliary rocker arm are connected by hinges The auxiliary rocker arm can be independently adjusted by a hydraulic cylinder to cope with the complex terrain of irregular coal seams; the on-slope support vehicle is located on the slope, connected to the main rocker arm, and is equipped with a multi-axis hydraulic control system. The main rocker arm is adjusted in pitch and rotation angles through the hydraulic system to adapt to different working heights and angles and optimize the cutting operation; the on-slope support vehicle can slide along the slope surface and work in conjunction with the main rocker arm to achieve precise support and adjustment; the main rocker arm can not only drive the auxiliary rocker arm to slide up and down along the main rocker arm, but also slide left and right through the main rocker arm sliding mechanism to further optimize the cutting position; the hydraulic system is linked with the sliding system to enable the left cutting drum and the right cutting drum to move flexibly within multiple angles and heights, thereby improving the overall coal mining efficiency; after coal mining, the drum cutting unit transports the coal to the U-shaped scraper conveyor through the sliding system, and further transports it to the crushing station through the scraper conveyor for crushing, and finally transports the crushed coal to the storage or transportation area through the conveyor belt conveyor.

[0005] The basic installation part includes a complete machine frame, an installation platform, an electric power system, and a main rocker arm sliding mechanism; the main rocker arm sliding mechanism is installed on the installation platform to support the roller cutting part to slide left and right along the installation platform; the transfer part includes a lifting mechanism and a U-shaped scraper conveyor, which are installed on the basic installation part; the U-shaped scraper conveyor realizes the lifting function on the complete machine frame through the lifting mechanism, and descends to the ground close to the ground during coal mining, and the bottom coal is collected and transported through the U-shaped scraper conveyor; the scraper conveyor is equipped with a coal flow detection sensor to monitor the coal transportation situation in real time.

[0006] The walking part includes tracks, track driving wheels, and track supporting and guiding wheels, which are driven by the power system to realize the movement of the whole equipment; the tracks are symmetrically arranged on the central plane of the whole machine frame, and are equipped with an intelligent driving control system to automatically adjust the track angle according to the slope conditions; the track driving wheel is equipped with a shock absorbing mechanism, which adjusts the position of the driving wheel and the supporting and guiding wheel by detecting the pressure change of the track contacting the ground, thereby reducing vibration and improving the walking stability of the equipment; the track supporting and guiding wheel adopts a multi-layer shock absorbing gasket structure to further extend the service life of the equipment. Advantages of the present invention

[0007] 1. A continuous coal mining process and equipment for an open-pit mine slope working face realizes flexible adjustment of the height and angle of a drum cutting part through an articulated structure of a main rocker arm and an auxiliary rocker arm and an intelligent hydraulic system, adapts to the complex terrain of different coal seams, and improves coal mining efficiency and equipment operation coverage.

[0008] 2. A continuous coal mining process and equipment for an open-pit mine slope working face adopts an automatic compensation system and a coal flow detection sensor to intelligently adjust the cutting posture and coal transportation process, reduce equipment resistance and wear, and improve coal recovery rate and operation stability.

[0009] 3. A crawler walking part in a continuous coal mining process and equipment for an open-pit mine slope working face combines intelligent drive control and shock absorption structure to achieve smooth movement and intelligent adjustment of the equipment on the slope, optimize the safety and stability of coal mining operations, and extend the service life of the equipment.

[0010] 4. A helicopter in a continuous coal mining process and equipment for an open-pit mine slope working face is equipped with a multi-axis hydraulic control system, which can flexibly adjust the pitch angle and rotation angle of the drum cutting part to adapt to different working heights and angles and optimize the cutting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of a continuous coal mining process and equipment for a slope working face of an open-pit mine according to the present invention.

[0012] Figure 2 It is a top view of a continuous coal mining process and equipment for a slope working face of an open-pit mine according to the present invention.

[0013] Figure 3 It is a side view of a continuous coal mining process and equipment for a slope working face of an open-pit mine according to the present invention.

[0014] Figure 4 It is a schematic diagram of a drum cutting part of a continuous coal mining process and equipment for a slope working face of an open-pit mine according to the present invention.

[0015] Figure 5 It is a schematic diagram of the walking part of a continuous coal mining process and equipment for a slope working face of an open-pit mine according to the present invention.

[0016] In the figure: a basic installation part (1), a transfer part (2), a roller cutting part (3), a walking part (4), and an on-slope support vehicle (5); the basic installation part includes a whole machine frame (1-1), a mounting platform (1-2), an electric power system (1-3), and a main rocker arm sliding mechanism (1-4); the transfer part includes a lifting mechanism (2-1) and a U-shaped scraper conveyor (2-2); the roller cutting part includes a chassis (3-1), a main rocker arm (3-2), an auxiliary rocker arm (3-3), a left cutting roller (3-4), a right cutting roller (3-5), a sliding system (3-6), and a hydraulic system (3-7); the walking part includes a crawler track (4-1), a crawler track driving wheel (4-2), and a crawler track support guide wheel (4-3). DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention.

[0018] See also Figure 1 The present invention relates to a continuous coal mining process and equipment for an open-pit mine slope working face, including a basic installation part, a transfer part, a drum cutting part, a walking part and an on-slope support vehicle. The basic installation part is composed of a frame-type complete machine frame and a mounting platform. The complete machine frame adopts a frame structure, which is mainly used to support the weight of the complete machine and ensure the stability of the equipment. The mounting platform is fixed above the complete machine frame and is provided with a slideway to provide lateral sliding support for the drum cutting part so as to cover a wider working surface and improve the operating efficiency and flexibility of the equipment.

[0019] Under different working conditions, when the slope of the mine is steep, the stability of the foundation installation is particularly important. Through reasonable frame design, the whole machine frame can effectively disperse the weight of the equipment to prevent the equipment from becoming unstable due to slope changes. The slideway on the installation platform ensures that the drum cutting part can slide freely within a large working range, adapting to different slopes and different coal seam heights.

[0020] See also Figure 2 and Figure 3 The transfer part is located at the front of the equipment, including the lifting mechanism and the U-shaped scraper conveyor. The U-shaped scraper conveyor is connected to the whole machine frame through the lifting mechanism, and its end is equipped with a bottom coal shovel to efficiently collect the bottom coal and transport the coal blocks to the subsequent processing area. The U-shaped scraper conveyor is equipped with a coal flow detection sensor to monitor the coal transportation situation in real time and transmit the data to the intelligent control system. The intelligent control system dynamically adjusts the conveying speed according to the sensor data to ensure smooth coal transportation, reduce coal retention and transportation losses, and at the same time improve the coal transportation efficiency and reduce the workload of manual cleaning.

[0021] In actual operation, the work of the transfer department is crucial. If the coal seam is relatively hard and the coal is difficult to be transported smoothly, the coal flow detection sensor will immediately detect this change and transmit real-time data to the intelligent control system. The system automatically adjusts the conveying speed of the U-shaped scraper conveyor according to the change in coal flow, and adjusts the height of the lifting mechanism to ensure that the coal passes through the conveyor belt smoothly without blockage. This dynamic adjustment can effectively improve the efficiency of coal transportation, avoid the need for manual intervention, and reduce labor intensity and difficulty of operation.

[0022] See also Figure 4 The drum cutting part is the core component of the present invention, which is installed on the slideway of the base installation part, and includes a main rocker arm, an auxiliary rocker arm, left and right cutting drums, a hydraulic system and an automatic compensation system. The left and right cutting drums slide up and down on the main rocker arm through the sliding system, and can be flexibly adjusted according to the thickness and height of different coal seams. The main rocker arm slides left and right through the slideway, and the pitch angle is controlled by the hydraulic cylinder. The auxiliary rocker arm is connected to the main rocker arm through a pin shaft, and the swing angle is adjusted by the hydraulic cylinder.

[0023] In actual operation, the drum cutting unit first adjusts the left and right positions through the main rocker arm to cover the working surface, and then adjusts the cutting angle through the swing of the auxiliary rocker arm to ensure that the drum always operates in the best posture. The pitch angle of the drum is adjusted by the hydraulic system, and the cutting depth and force are dynamically adjusted according to the thickness, hardness and terrain changes of the coal seam. The automatic compensation system optimizes the cutting angle and depth of the drum based on the real-time detection data of the coal seam to ensure cutting efficiency and reduce equipment wear. The cut coal blocks are introduced into the U-shaped scraper conveyor through the lower baffle to complete the initial collection and transportation of coal.

[0024] The specific working conditions are analyzed as follows: When the coal seam is thin and hard, the drum cutting part will adjust its position through the main rocker arm sliding mechanism, accurately aligning the coal seam for oblique cutting. As the depth of the coal seam changes, the hydraulic system dynamically adjusts the cutting depth and force to ensure the best cutting effect. During the operation, the pitch angle of the drum is automatically adjusted by the hydraulic system, and the auxiliary rocker arm cooperates with the main rocker arm to adjust the cutting angle to ensure that the drum always maintains good contact with the coal layer.

[0025] The coal blocks are introduced into the U-shaped scraper conveyor through the lower baffle. During the conveying process, the coal flow detection sensor monitors the coal conveying situation and provides real-time feedback to the intelligent control system. According to the changes in coal flow, the system adjusts the conveying speed of the conveyor to ensure that the coal will not be stranded, while reducing coal losses and transportation interruptions.

[0026] See also Figure 5 The walking part adopts four crawlers arranged symmetrically at the bottom of the whole machine frame, and each crawler is connected to the intelligent control system through the crawler drive wheel. The crawler system automatically adjusts the crawler angle according to the terrain slope and working surface conditions to ensure the smooth running and safety of the equipment. At the same time, the crawler support guide wheel is equipped with an active shock absorbing device, which dynamically adjusts the support angle and position by monitoring the pressure change between the crawler and the ground, significantly reducing vibration and extending the service life of the equipment.

[0027] If there are large undulations or irregular terrain on the slope, the crawler system will automatically adjust the angle according to the changes in the terrain to ensure the smooth movement of the equipment. The intelligent control system will monitor the pressure changes between the equipment and the ground in real time, and the active shock absorbing device of the crawler support guide wheel will dynamically adjust the position according to the monitoring data, thereby reducing the impact of vibration on the equipment and ensuring that the equipment can smoothly pass through the complex mine slope terrain.

[0028] The slope support vehicle is located at the rear of the equipment, and the operating height and angle of the drum cutting part are adjusted through a multi-axis hydraulic control system. The slope support vehicle is linked with the main and auxiliary rocker arms to achieve efficient adaptability of the equipment to complex terrain and different coal seam thicknesses, further optimizing the cutting operation process.

[0029] Through the above-mentioned design and process, the equipment of the present invention can carry out coal mining operations efficiently and stably under complex open-pit mine slope working face conditions, has strong adaptability and intelligence level, greatly improves coal mining efficiency, and reduces equipment operating costs and manual operation burdens.

Claims

1. A continuous coal mining process and equipment for a slope working face of an open-pit mine, comprising a base mounting portion (1), a transfer portion (2), a drum cutting portion (3), a walking portion (4) and an on-slope support vehicle (5); the drum cutting portion (3) is mounted on the base mounting portion (1), comprising a chassis (3-1), a main rocker arm (3-2), an auxiliary rocker arm (3-3), a left cutting drum (3-4), a right cutting drum (3-5), a sliding system (3-6) and a hydraulic system (3-7); the left cutting drum (3-4) and the right cutting drum (3-5) slide up and down along the main rocker arm (3-2) through the sliding system (3-6), and can adapt to The main rocker arm (3-2) can slide left and right through the main rocker arm sliding mechanism (1-4), and can cooperate with the auxiliary rocker arm (3-3) to slide up and down along the main rocker arm (3-2) to adjust the operating position of the drum cutting part (3), thereby expanding the coverage of the coal mining equipment. During the operation, the main rocker arm (3-2) can collect coal in all directions through the sliding mechanism (1-4), and the drum cutting part (3) can cut obliquely to accurately control the cutting depth and direction to adapt to different coal seam thicknesses and hardnesses. The drum cutting part (3) is equipped with an automatic compensation system to adjust the cutting posture in real time according to changes in coal seam thickness and hardness. The main rocker arm (3-2) and the auxiliary rocker arm (3-3) are connected via an articulated structure, and the auxiliary rocker arm (3-3) can be independently adjusted via a hydraulic cylinder to cope with the complex terrain of irregular coal seams; the on-slope support vehicle (5) is located on the slope and is connected to the main rocker arm (3-2), and is equipped with a multi-axis hydraulic control system. The main rocker arm (3-2) is adjusted in pitch and rotation angles via a hydraulic system (3-7) to adapt to different working heights and angles and optimize cutting operations; the on-slope support vehicle (5) can slide along the slope surface and work in conjunction with the main rocker arm (3-2) to achieve precise support and adjustment; the main rocker arm (3-2) is not The auxiliary rocker arm (3-3) can only be driven to slide up and down along the main rocker arm, and can also slide left and right through the main rocker arm sliding mechanism (1-4), thereby further optimizing the cutting position; the hydraulic system (3-7) is linked with the sliding system (3-6), so that the left cutting drum (3-4) and the right cutting drum (3-5) can move flexibly within a range of multiple angles and multiple heights, thereby improving the overall coal mining efficiency; after coal mining is completed, the drum cutting part (3) conveys the coal to the U-shaped scraper conveyor (2-2) through the sliding system, and further conveys it to the crushing station for crushing through the scraper conveyor, and finally conveys the crushed coal to the storage or transportation area through the belt conveyor.

2. A continuous coal mining process and equipment for an open-pit mine slope working face according to claim 1, characterized in that The basic installation part (1) comprises a whole machine frame (1-1), a mounting platform (1-2), an electric power system (1-3), and a main rocker arm sliding mechanism (1-4); the main rocker arm sliding mechanism (1-4) is installed on the mounting platform (1-2) to support the roller cutting part (3) to slide left and right along the mounting platform (1-2); the transfer part (2) comprises a lifting mechanism (2-1) and a U-shaped scraper conveyor (2-2), which are installed on the basic installation part (1); the U-shaped scraper conveyor (2-2) realizes a lifting function on the whole machine frame (1-1) through the lifting mechanism (2-1), and descends to close to the ground during coal mining to realize bottom coal collection and transportation through the U-shaped scraper conveyor (2-2); the scraper conveyor (2-2) is equipped with a coal flow detection sensor to monitor the coal transportation situation in real time.

3. The open-pit mine slope working face continuous coal mining process and equipment according to claim 1, characterized in that The walking part (4) comprises a crawler track (4-1), a crawler track driving wheel (4-2), and a crawler track supporting guide wheel (4-3), which are driven by an electric power system (1-3) to realize the movement of the entire equipment; the crawler track (4-1) is symmetrically arranged on the central plane of the whole machine frame (1-1), and is equipped with an intelligent driving control system to automatically adjust the crawler track angle according to the slope condition; the crawler track driving wheel (4-2) is equipped with a shock absorbing mechanism to adjust the position of the driving wheel and the supporting guide wheel by detecting the pressure change of the crawler track contacting the ground, thereby reducing vibration and improving the walking stability of the equipment; the crawler track supporting guide wheel (4-3) adopts a multi-layer shock absorbing gasket structure to further extend the service life of the equipment.

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