A surface miner

Abstract

The present application relates to the technical field of mining equipment, and more particularly to an open pit mining machine, which comprises a machine body, a cutting drum mechanism, a moving and lifting assembly, a first power unit, a second power unit and a converter cabinet; the first power unit comprises a first engine and a first generator connected with the first engine, and the first engine and the first generator are both arranged on the machine body; the second power unit comprises a second engine and a second generator connected with the second engine, and the second engine and the second generator are both arranged on the machine body; the converter cabinet is used for receiving the power delivered by the first generator and / or the second generator, and the converter cabinet receiving the power delivered by the first generator and / or the second generator transmits the electric energy to the moving and lifting assembly and / or the cutting drum assembly by conversion and control, so as to provide energy for the moving and lifting assembly and / or the cutting drum mechanism and realize the power supply requirement of the open pit mining machine for high-power cutting operation.

Description

Technical Field

[0001] This invention relates to the field of mining equipment technology, and more particularly to an open-pit mining machine. Background Technology

[0002] In open-pit mining, drum mining machines are one of the most common mining equipment. Through their efficient mechanized operation, they have become a core technology for improving ore mining efficiency, reducing labor costs, and enhancing safety. The invention patent CN119957225B, which is authorized, discloses an open-pit mining machine, including a mining machine body, a cutting drum, a shovel, a scraper conveyor, and a belt conveyor. Two sets of front tracks are fixedly connected to the front side of the mining machine body through two sets of front drive frames. The cutting drum is rotatably connected to the lower front side of the mining machine body. An engine compartment is fixedly connected to the front side of the mining machine body and above the cutting drum.

[0003] In the prior art, the moving lifting assembly and the cutting drum mechanism are powered by a control system, which is a combination of a high-power engine and a generator. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] Therefore, the present invention provides an open-pit mining machine that uses a first power unit and a second power unit to supply power to a converter cabinet, and then outputs power through the converter cabinet in a centralized manner to meet the power supply requirements of the high-power cutting operation of the open-pit mining machine and reduce costs.

[0006] An open-pit mining machine according to a first aspect of the present invention includes: The body has a mounting surface at the bottom; The cutting roller mechanism is mounted on the mounting surface; The mobile lifting assembly, mounted on the machine body, is used to drive the machine body to move and also to control the parallelism between the mounting surface and the mining working face; The first power unit includes a first engine and a first generator connected to the first engine, both of which are mounted on the fuselage. The second power unit includes a second engine and a second generator connected to the second engine, both of which are mounted on the fuselage; A converter cabinet is installed on the machine body. The first generator is connected to the converter cabinet, and the second generator is connected to the converter cabinet. The converter cabinet is used to receive power from the first generator and / or power from the second generator. The converter cabinet is also used to provide power to the moving lifting assembly and / or the cutting drum mechanism.

[0007] Optionally, the cutting drum mechanism includes: The cutting drum assembly is rotatably mounted on the bottom of the machine body and located at the center of gravity of the open-pit mining machine. The cutting drum assembly includes a rotating shaft and a cutting drum that is coaxially and fixedly connected to the rotating shaft. The sealing assembly is fixedly installed on the machine body and forms a sealed space inside. The first end of the rotating shaft is located inside the sealed space, and the cutting cylinder is located outside the sealed space.

[0008] Optionally, the open-pit mining machine also includes: The side plate is slidably mounted on the side wall of the cutting drum assembly along the height direction of the cutting drum assembly; The pressure detection cylinder includes a cylinder body and a telescopic rod that is slidably installed inside the cylinder body. The cylinder body is fixedly installed on the cutting roller assembly, and the end of the telescopic rod away from the cylinder body is fixedly installed on the side plate. The pressure detection cylinder is used to monitor the pressure data of the side plate. Tilt sensor, installed on the body, is used to acquire tilt angle data of the body; The data acquisition module is connected to both the tilt sensor and the pressure detection cylinder to collect pressure data and / or tilt data. The main control unit is connected to both the data acquisition module and the mobile lifting assembly. It is used to receive pressure data and / or tilt data transmitted by the data acquisition module; it is also used to generate control signals based on the pressure data and / or tilt data, so that the mobile lifting assembly can adjust the position of the mounting surface according to the control signals.

[0009] Optionally, the control signal includes a first signal and a second signal; there are four movable lifting components, which are evenly distributed at the lower end of the machine body, and the movable lifting components include: The moving parts are located at the lower end of the body; The first controller is connected to the main controller and is used to receive the first signal from the main controller. The first controller is connected to the moving part and is used to control the moving part to drive the machine body to move in a direction parallel to the mining face according to the first signal. The lifting component is located between the moving component and the machine body; The second controller is connected to the main controller and is used to receive the second signal from the main controller. The second controller is also connected to the lifting component and is used to control the extension and retraction of the lifting component according to the second signal, so as to change the distance between the moving component and the machine body.

[0010] Optionally, the open-pit mining machine also includes: The first receiving component is installed on the machine body. The first receiving component has an input end and an output end. The input end is close to the side of the cutting drum assembly. The first receiving component is used to receive and transfer the material cut by the cutting drum assembly. The shovel plate is installed on the machine body and located between the cutting drum assembly and the input end. The shovel plate is used to guide the material cut by the cutting drum assembly into the first receiving assembly.

[0011] Optionally, the open-pit mining machine also includes: The second receiving component is installed on the machine body and is used to receive the materials transferred from the transfer output end.

[0012] Optionally, the open-pit mining machine also includes: The rotating assembly is rotatably mounted on the machine body, and the second receiving assembly is fixedly mounted on the rotating assembly.

[0013] Optionally, the cutting drum mechanism further includes: The roller guard is installed on the cutting roller assembly and is located on the side close to the machine body.

[0014] Optionally, the sealing assembly includes: The bearing housing component is fixedly installed on the machine body, and the first end of the rotating shaft is located inside the bearing housing component, and the rotating shaft and the bearing housing component are coaxially arranged. A tapered bearing is coaxially mounted on the outside of the rotating shaft, with its outer ring embedded in the bearing housing component. A sealing end cap is provided at the end of the bearing housing component away from the cutting drum assembly, for sealing the end of the bearing housing component away from the cutting drum assembly; A sealing component is coaxially disposed on the outside of the rotating shaft and located at the end of the bearing housing component near the cutting drum assembly, for sealing the end of the bearing housing component near the cutting drum assembly; A sealed space is formed between the sealing component, the sealing end cap, and the bearing housing component.

[0015] Optionally, the sealing component includes: The labyrinth seal is coaxially mounted on the outside of the rotating shaft and located at one end of the bearing housing component near the cutting drum assembly; A floating seal is installed between the labyrinth seal and the rotating shaft to seal the space between them.

[0016] The bearing housing components include: Bearing mounting base, fixedly installed on the machine body; The bearing housing is coaxially nested within the bearing mounting base, and the outer ring of the tapered bearing is embedded within the bearing housing.

[0017] One of the above technical solutions has at least the following advantages or beneficial effects: According to an embodiment of the present invention, an open-pit mining machine includes a body, a cutting drum mechanism, a mobile lifting assembly, a first power unit, a second power unit, and a converter cabinet. The first power unit includes a first engine and a first generator. The first engine drives the first generator to operate through mechanical transmission, converting mechanical energy into electrical energy. The second power unit includes a second engine and a second generator. The second engine drives the second generator to operate through mechanical transmission, converting mechanical energy into electrical energy. Both the first and second generators are connected to a converter cabinet mounted on the body. The converter cabinet receives power from the first and second generators, or receives power from either the first or second generator. Upon receiving power from the first and / or second generators, the converter cabinet converts and controls the electrical energy to transmit it to the mobile lifting assembly and / or the cutting drum assembly, providing energy to the mobile lifting assembly and / or the cutting drum mechanism, thus meeting the power supply requirements for high-power cutting operations of the open-pit mining machine. Attached Figure Description

[0018] Figure 1 A three-dimensional structural schematic diagram of an open-pit mining machine according to an embodiment of the present invention is shown; Figure 2 This diagram shows a front view of an open-pit mining machine according to an embodiment of the present invention. Figure 3 This diagram shows a top view of an open-pit mining machine according to an embodiment of the present invention. Figure 4 This diagram illustrates a structure comprising a first power unit and a second power unit according to an embodiment of the present invention. Figure 5 A cross-sectional structural schematic diagram of a cutting roller mechanism according to an embodiment of the present invention is shown; Figure 6 This diagram illustrates a structural schematic of an embodiment of the present invention, which includes a pressure detection cylinder. Figure 7 A schematic diagram of a structure with a shovel plate according to an embodiment of the present invention is shown.

[0019] Explanation of reference numerals in the attached figures 100-Machine body, 200-Cutting roller mechanism, 300-Side plate, 400-Pressure detection cylinder, 500-Moving lifting assembly, 600-First material receiving assembly, 700-Shovel plate, 800-Second material receiving assembly, 900-Rotating assembly, 1000-First power unit, 1100-Second power unit, 1200-Converter cabinet; 210 - Cutting roller assembly, 220 - Sealing assembly, 230 - Roller cover; 410 - Cylinder block, 420 - Telescopic rod; 510 - Moving parts; 520 - Lifting parts; 1010 - First engine; 1020 - First generator; 1110 - Second engine; 1120 - Second generator; 211-Rotating shaft, 212-Cutting cylinder; 221-Bearing housing assembly, 222-Tapered bearing, 223-Sealing end cap, 224-Sealing component; 2211 - Bearing mounting base, 2212 - Bearing housing; 2241 - Labyrinth seal, 2242 - Floating seal. Detailed Implementation

[0020] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] The following describes some embodiments of open-pit mining machines provided according to the present invention with reference to the accompanying drawings.

[0022] See Figures 1 to 7 An open-pit mining machine includes a body 100, a cutting drum mechanism 200, a mobile lifting assembly 500, a first power unit 1000, a second power unit 1100, and a converter cabinet 1200. The body 100 has a mounting surface at its bottom. The cutting drum mechanism 200 is mounted on the mounting surface. The mobile lifting assembly 500 is mounted on the body 100 and is used to drive the body 100 to move and to control the parallelism between the mounting surface and the mining face. The first power unit 1000 includes a first engine 1010 and a first generator 1020 connected to the first engine 1010. Both the first engine 1010 and the first generator 1020 are mounted on the body 100. On the 00; the second power unit 1100 includes a second engine 1110 and a second generator 1120 connected to the second engine 1110. Both the second engine 1110 and the second generator 1120 are mounted on the body 100; the converter cabinet 1200 is mounted on the body 100. The first generator 1020 is connected to the converter cabinet 1200, and the second generator 1120 is connected to the converter cabinet 1200. The converter cabinet 1200 is used to receive power from the first generator 1020 and / or to receive power from the second generator 1120. The converter cabinet 1200 is also used to provide power to the moving lifting assembly 500 and / or the cutting drum mechanism 200.

[0023] The open-pit mining machine provided in this embodiment includes a body 100, a cutting drum mechanism 200, a mobile lifting assembly 500, a first power unit 1000, a second power unit 1100, and a converter cabinet 1200. The body 100 has a mounting surface at its bottom, providing a stable mounting position for the cutting drum mechanism 200. The cutting drum mechanism 200, mounted on the mounting surface, is the core actuator of the open-pit mining machine and directly participates in ore cutting operations. The mobile lifting assembly 500 is mounted on the body 100 and is used to drive the body 100 to move and also to control the parallelism between the mounting surface and the mining face. The mobile lifting assembly 500 has a dual function: first, it drives the body 100 to move on the mining face, realizing the position transfer of the mining machine and the coverage of the working area; second, it controls the parallelism between the mounting surface and the mining face. By adjusting the height of different parts of the body 100, the mounting surface is always kept parallel to the working face, ensuring that the cutting drum mechanism 200 can perform cutting operations in the optimal posture.

[0024] The first power unit 1000 includes a first engine 1010 and a first generator 1020. The first engine 1010 drives the first generator 1020 to operate through mechanical transmission, converting mechanical energy into electrical energy. The second power unit 1100 includes a second engine 1110 and a second generator 1120. The second engine 1110 drives the second generator 1120 to operate through mechanical transmission, converting mechanical energy into electrical energy. The converter cabinet 1200 is mounted on the body 100 and integrates rectification and inversion functions. It efficiently realizes the conversion, transmission and control of electrical energy, ensuring the safety and reliability of the high-voltage system. At the same time, the first generator 1020 and the second generator 1120 are both connected to the converter cabinet 1200 mounted on the body 100. The converter cabinet 1200 is used to receive the power transmitted by the first generator 1020 and the second generator 1120, or the converter cabinet 1200 is used to receive the power transmitted by either the first generator 1020 or the second generator 1120. After receiving the power transmitted by the first generator 1020 and / or the second generator 1120, the converter cabinet 1200 transmits the electrical energy to the mobile lifting assembly 500 and / or the cutting drum assembly 210 through conversion and control, providing energy for the mobile lifting assembly 500 and / or the cutting drum mechanism 200.

[0025] For example, as can be seen from the above, the mobile lifting assembly 500 controls the movement of the machine body 100 and is also used to control the parallelism between the installation surface and the mining working face. The parallelism between the installation surface and the mining working face is controlled by the action of multiple hydraulic cylinders. Electrical energy is transmitted to the mobile lifting assembly 500 and / or the cutting drum assembly 210 through the converter cabinet 1200. The existing working condition adaptive power distribution algorithm is adopted, and an energy efficiency optimal theoretical model for the power distribution of the pump station motor in the mobile lifting assembly 500 and the mining motor in the cutting drum assembly 210 is established to ensure that the first engine 1010 and the second engine 1110 always operate in the fuel economy zone under different working conditions and loads, ensuring stable high power output while effectively reducing fuel consumption.

[0026] In summary, this open-pit mining machine uses the first power unit 1000 and the second power unit 1100 together to power the converter cabinet 1200, and then the converter cabinet 1200 outputs power in a centralized manner to meet the power supply requirements of high-power cutting operations and reduce engine costs.

[0027] See Figures 1 to 7 In some embodiments, the cutting drum mechanism 200 includes a cutting drum assembly 210 and a sealing assembly 220; the cutting drum assembly 210 is rotatably mounted on the bottom of the machine body 100 and located at the center of gravity of the open-pit mining machine; the cutting drum assembly 210 includes a rotating shaft 211 and a cutting cylinder 212 coaxially and fixedly connected to the rotating shaft 211; the sealing assembly 220 is fixedly mounted on the machine body 100 and has a sealed space inside, with the first end of the rotating shaft 211 located inside the sealed space and the cutting cylinder 212 located outside the sealed space.

[0028] In this technical solution, the cutting drum mechanism 200 includes a cutting drum assembly 210 and a sealing assembly 220. The cutting drum assembly 210 is mounted on the bottom of the machine body 100 by rotation and is located at the center of gravity of the open-pit mining machine. This mounting position allows the reaction force generated by the cutting drum assembly 210 during cutting operations to be evenly transmitted to the machine body 100, avoiding excessive local stress that could cause the machine body 100 to tilt and ensuring the stability of the mining operation.

[0029] The cutting drum assembly 210 specifically includes a rotating shaft 211 and a cutting drum 212. The cutting drum 212 and the rotating shaft 211 are coaxially fixedly connected and rotate synchronously. The rotating shaft 211 serves as a power transmission component, transmitting the driving power of the open-pit mining machine to the cutting drum 212, enabling the cutting drum 212 to rotate stably to complete the cutting and crushing operations of the ore. The rotating shaft 211 has a first end and a second end. The cutting drum assembly 210 serves as the main component for performing the cutting operation. The first end of its rotating shaft 211 is rotatably installed in a sealed space, and the cutting drum 212 extends out of the sealed space to directly contact the ore layer for mining operations. For example, the outer periphery of the cutting drum 212 can be equipped with cutting teeth and other operating components according to mining requirements to improve cutting efficiency. The sealing component 220 is fixedly installed and connected to the machine body 100. The sealing component 220 effectively prevents ore dust, gravel particles and external rainwater and moisture generated during open-pit mining from entering the sealed space, protects the end of the rotating shaft 211 located in the sealed space and related components, reduces wear and corrosion of components, and extends the service life of the cutting drum mechanism 200.

[0030] For example, the second end of the rotating shaft 211 is connected to a reducer, which provides power to the rotating shaft 211. A lubricating medium may be provided in the sealed space, but is not limited to, so that the sealed space has both dustproof and lubrication functions.

[0031] As can be seen from the above, the cutting drum assembly 210 is located at the center of gravity of the open-pit mining machine, which optimizes the force distribution of the entire machine and reduces the vibration amplitude during operation. The sealed space formed by the sealing assembly 220 provides a stable working environment for the end of the rotating shaft 211, preventing transmission components from jamming or malfunctioning due to dust and moisture erosion, reducing the frequency and cost of equipment maintenance, and ensuring that the cutting drum mechanism 200 can operate continuously and stably, meeting the long-term, high-intensity operation requirements of open-pit mining.

[0032] See Figures 1 to 7In some embodiments, the open-pit mining machine further includes a side plate 300, a pressure detection cylinder 400, a tilt sensor, a data acquisition module, and a main control unit; the side plate 300 is slidably mounted on the side wall of the cutting drum assembly 210 along the height direction of the cutting drum assembly 210; the pressure detection cylinder 400 includes a cylinder body 410 and a telescopic rod 420 slidably mounted in the cylinder body 410, the cylinder body 410 is fixedly mounted on the cutting drum assembly 210, and the end of the telescopic rod 420 away from the cylinder body 410 is fixedly mounted on the side plate 300; the pressure detection cylinder 400 is used for monitoring... The pressure data of the measuring plate 300; the tilt sensor is set on the body 100 to acquire the tilt data of the body 100; the data acquisition module is connected to both the tilt sensor and the pressure detection cylinder 400 to acquire pressure data and / or tilt data; the main control unit is connected to both the data acquisition module and the moving lifting assembly 500 to receive the pressure data and / or tilt data transmitted by the data acquisition module; it is also used to generate control signals based on the pressure data and / or tilt data so that the moving lifting assembly 500 adjusts the position of the mounting surface according to the control signals.

[0033] In this technical solution, the open-pit mining machine also includes side plates 300, pressure detection cylinders 400, tilt sensors, data acquisition modules, and a main control unit. The side plates 300 are located on both sides of the cutting drum assembly 210. For example, each side plate 300 is controlled by two pressure detection cylinders 400. The pressure detection cylinders 400 continuously apply pressure to the side plates 300, ensuring that the bottom of the side plates 300 remains in contact with the mining face. Because the side plates 300 are on both sides of the cutting drum assembly 210, when the cutting drum assembly 210 is milling the ground downwards, the bottom surface of the cutting drum assembly 210 is always lower than the sides of the side plates 300. The extension length of the pressure detection cylinders 400 can be used to calculate the height difference between the bottom surface of the side plates 300 and the bottom surface of the cutting drum, thereby calculating the cutting depth. Since the pressure detection cylinders 400 continuously apply pressure, they are real-time controllable.

[0034] The pressure detection cylinder 400 includes a cylinder body 410 and a telescopic rod 420 slidably installed within the cylinder body 410. The cylinder body 410 is fixedly installed on the cutting roller assembly 210, and the end of the telescopic rod 420 away from the cylinder body 410 is fixedly installed on the side plate 300. The pressure detection cylinder 400 is used to monitor the pressure data borne by the side plate 300 in real time during the cutting process. As the height difference between the cutting roller assembly 210 and the side plate 300 gradually increases, the reaction force on the side plate 300 will change. The pressure detection cylinder 400 can promptly capture this pressure change and convert it into an electrical signal output, providing data support for subsequent control decisions.

[0035] An inclination sensor is installed on the machine body 100 to acquire inclination data of the machine body 100 in real time and monitor the tilt status of the machine body 100 during operation. When the open-pit mining machine operates in complex terrain, the machine body 100 is prone to tilting. The inclination sensor can measure the tilt angle and tilt direction of the machine body 100 relative to the horizontal plane.

[0036] The data acquisition module is connected to both the tilt sensor and the pressure detection cylinder 400 to synchronously acquire pressure and tilt data. It also converts the acquired analog signals into digital signals for preprocessing, providing a reliable data source for subsequent data analysis and control command generation.

[0037] The main control unit is connected to both the data acquisition module and the mobile lifting assembly 500. As the control core of the open-pit mining machine, the main control unit receives pressure and tilt data transmitted by the data acquisition module and has built-in data processing algorithms and control strategies. Based on the received pressure and tilt data, the main control unit performs comprehensive analysis to determine the current working status and operating environment of the mining machine, generates corresponding control signals, and sends the control signals to the mobile lifting assembly 500. This enables the mobile lifting assembly 500 to adjust the position of the installation surface according to the control signals, thereby realizing automated control and adaptive adjustment of the open-pit mining machine's operation process and improving the efficiency and safety of mining operations.

[0038] See Figures 1 to 7 In some embodiments, the control signal includes a first signal and a second signal; there are four movable lifting components 500, which are evenly distributed at the lower end of the machine body 100. Each movable lifting component 500 includes a movable part 510, a first controller, a lifting part 520, and a second controller; the movable part 510 is disposed at the lower end of the machine body 100; the first controller is connected to the main controller and is used to receive the first signal from the main controller. The first controller is also connected to the movable part 510 and is used to control the movable part 510 to move the machine body 100 in a direction parallel to the mining face according to the first signal; the lifting part 520 is disposed between the movable part 510 and the machine body 100; the second controller is connected to the main controller and is used to receive the second signal from the main controller. The second controller is also connected to the lifting part 520 and is used to control the lifting part 520 to extend or retract according to the second signal, thereby changing the distance between the movable part 510 and the machine body 100.

[0039] In this technical solution, there are four movable lifting components 500, which are evenly distributed at the four corners of the lower end of the body 100 to form a stable support structure. Each movable lifting component 500 includes a moving part 510, a first controller, a lifting part 520, and a second controller. Each component has a clear function and works in coordination.

[0040] The moving component 510 is located at the lower end of the body 100 and serves as the walking actuator of the open-pit mining machine. It can be a tracked or wheeled structure, the specific form of which is determined according to the geological conditions of the mining face. The moving component 510 is electrically connected to the first controller, which acts as a signal relay unit between the main controller and the moving component 510. The first controller receives a first signal from the main controller, which includes parameters such as the direction of movement and the speed of movement. The first controller parses the first signal to derive specific control commands, driving the moving component 510 to move the body 100 in a direction parallel to the mining face, thereby enabling the open-pit mining machine to move.

[0041] The lifting component 520 is disposed between the moving component 510 and the body 100, serving as a structural component connecting the moving component 510 and the body 100. The lifting component 520 employs a telescopic actuator such as a hydraulic cylinder or an electric push rod, adjusting the distance between the moving component 510 and the body 100 by changing its own extension. The second controller establishes a communication connection with the main controller to receive a second signal from the main controller. The second signal includes the target extension amount or height adjustment amount of each lifting component 520. The second controller is connected to the lifting component 520 and controls the lifting component 520 to perform telescopic movements according to the second signal, thereby independently adjusting the height of the four corners of the body 100.

[0042] Since the four movable lifting components 500 are evenly distributed at the lower end of the machine body 100, the main control unit can calculate the required adjustment amount of each lifting component 520 based on the tilt angle data of the machine body 100 obtained by the tilt angle sensor, generate differentiated second signals and send them to the corresponding second controllers to achieve precise control of the attitude of the machine body 100. When the machine body 100 tilts forward, backward or sideways, the main control unit controls the lifting components 520 at different positions to extend and retract differently, so that the mounting surface is restored to a state parallel to the mining working face, ensuring that the cutting drum assembly 210 can cut into the ore layer at the designed angle, ensuring the uniformity of the cutting depth and the flatness of the mining working face.

[0043] See Figures 1 to 7 In some embodiments, the open-pit mining machine further includes a first receiving assembly 600 and a shovel 700; the first receiving assembly 600 is disposed on the machine body 100, and has an input end and an output end, with the input end close to the side of the cutting drum assembly 210, and is used to receive and transfer the material cut by the cutting drum assembly 210; the shovel 700 is disposed on the machine body 100 and located between the cutting drum assembly 210 and the input end, and is used to guide the material cut by the cutting drum assembly 210 into the first receiving assembly 600.

[0044] In this technical solution, the open-pit mining machine also includes a first receiving component 600 and a shovel 700. The first receiving component 600 is mounted on the machine body 100 and has an input end and an output end. Its input end is located near the side of the cutting drum assembly 210 and is used to receive the ore material cut by the cutting drum assembly 210, and to transport the material through the output end to subsequent processing equipment or transport vehicles. The shovel 700 is mounted on the machine body 100 and located between the cutting drum assembly 210 and the input end of the first receiving component 600. Its front end is close to the mining face, and its rear end connects to the input end of the first receiving component 600, forming a smooth material flow channel. For example, during the cutting operation, after the cutting drum assembly 210 breaks the ore layer, the shovel 700 uses the forward momentum of the machine body 100 to scoop up the scattered ore material and guide it into the first receiving component 600, avoiding material accumulation on the working surface, improving material collection efficiency, and reducing secondary cleaning operations.

[0045] For example, the first receiving component 600 can be a chain conveyor or a belt conveyor, and its conveying speed can be matched and adjusted according to the cutting efficiency of the cutting roller component 210; the installation angle of the shovel 700 is adjustable to adapt to ore materials of different hardness and block size, ensuring that the material can smoothly enter the first receiving component 600.

[0046] See Figures 1 to 7 In some instances, the open-pit mining machine also includes a second receiving assembly 800; the second receiving assembly 800 is disposed on the machine body 100 and is used to receive materials transferred from the transfer output end.

[0047] In this technical solution, the open-pit mining machine also includes a second receiving assembly 800. The second receiving assembly 800 is mounted on the machine body 100, located downstream of the output end of the first receiving assembly 600. It is used to receive and transfer the material discharged from the output end of the first receiving assembly 600, realizing secondary conveying and transfer of materials. After the first receiving assembly 600 conveys the cut ore material to the output end, the second receiving assembly 800 promptly receives the material and temporarily stores it or transfers it to external transportation equipment, preventing material accumulation from causing blockage of the first receiving assembly 600 and ensuring the continuity and smoothness of mining operations.

[0048] See Figures 1 to 7 In some instances, the open-pit mining machine also includes a rotating assembly 900; the rotating assembly 900 is rotatably mounted on the machine body 100, and the second receiving assembly 800 is fixedly mounted on the rotating assembly 900.

[0049] In this technical solution, the open-pit mining machine also includes a rotating component 900, which is rotatably mounted on the machine body 100. A second receiving component 800 is fixedly mounted on the rotating component 900. The rotation of the rotating component 900 drives the second receiving component 800 to adjust its angle or change its position. When the open-pit mining machine completes the cutting operation of a work area and needs to dock with external transport vehicles for unloading, the main control unit can control the rotating component 900 to rotate the second receiving component 800 to a suitable unloading position, ensuring that the conveying end of the second receiving component 800 is accurately aligned with the receiving position of the transport vehicle. After unloading, the rotating component 900 then drives the second receiving component 800 to reset, ready for the next round of material receiving operations.

[0050] For example, the rotating component 900 can adopt a slewing bearing structure or a turntable structure, and its rotation angle range can be set according to the actual unloading requirements. The rotation drive method can be a hydraulic motor drive or an electric motor drive.

[0051] See Figures 1 to 7 In some instances, the cutting roller mechanism 200 also includes a roller guard 230; the roller guard 230 is disposed on the cutting roller assembly 210 and on the side close to the machine body 100.

[0052] In this technical solution, the cutting drum mechanism 200 also includes a drum cover 230, which is fixedly installed on the end face of the cutting drum 212 near the machine body 100, forming a shielding protection for the machine body 100. It can effectively block the flying gravel during the cutting operation from impacting the machine body 100, and avoid problems such as peeling of the coating on the surface of the machine body 100 and blockage of other parts.

[0053] See Figures 1 to 7 In some examples, the sealing assembly 220 includes a bearing housing component 221, a tapered bearing 222, a sealing end cap 223, and a sealing component 224. The bearing housing component 221 is fixedly mounted on the machine body 100, and the first end of the rotating shaft 211 is disposed inside the bearing housing component 221, with the rotating shaft 211 and the bearing housing component 221 being coaxially arranged. The tapered bearing 222 is coaxially disposed outside the rotating shaft 211, and the outer ring of the tapered bearing 222 is embedded inside the bearing housing component 221. The sealing end cap 223 is disposed at the end of the bearing housing component 221 away from the cutting drum assembly 210, for sealing the end of the bearing housing component 221 away from the cutting drum assembly 210. The sealing component 224 is coaxially disposed outside the rotating shaft 211 and located at the end of the bearing housing component 221 close to the cutting drum assembly 210, for sealing the end of the bearing housing component 221 close to the cutting drum assembly 210. A sealing space is formed between the sealing component 224, the sealing end cap 223, and the bearing housing component 221.

[0054] The sealing component 224 includes a labyrinth seal 2241 and a floating seal 2242; the labyrinth seal 2241 is coaxially disposed on the outside of the rotating shaft 211 and located at one end of the bearing housing component 221 near the cutting drum assembly 210; the floating seal 2242 is disposed between the labyrinth seal 2241 and the rotating shaft 211 and is used to seal the space between the labyrinth seal 2241 and the rotating shaft 211.

[0055] The bearing housing component 221 includes a bearing mounting base 2211 and a bearing housing 2212; the bearing mounting base 2211 is fixedly mounted on the body 100; the bearing housing 2212 is coaxially nested in the bearing mounting base 2211, and the outer ring of the tapered bearing 222 is embedded in the bearing housing 2212.

[0056] In this technical solution, the sealing assembly 220 includes a bearing housing component 221, a tapered bearing 222, a sealing end cap 223, and a sealing component 224. These components work together to form a sealing structure. The bearing housing component 221 is fixedly mounted on the machine body 100. The first end of the rotating shaft 211 passes through the interior of the bearing housing component 221, and the rotating shaft 211 and the bearing housing component 221 are coaxially aligned to ensure that the rotating shaft 211 does not experience eccentric wobbling during rotation. The tapered bearing 222 is coaxially sleeved on the outside of the rotating shaft 211, with its outer ring embedded inside the bearing housing component 221. The tapered bearing 222 can withstand the radial and axial forces generated during cutting operations, reducing wear on the rotating shaft 211 during rotation and extending its service life. The sealing end cap 223 is located at the end of the bearing housing component 221 away from the cutting drum assembly 210, and is used to seal that end to prevent external impurities from entering the interior of the bearing housing component 221 from that end; the sealing component 224 is coaxially located on the outside of the rotating shaft 211 and at the end of the bearing housing component 221 close to the cutting drum assembly 210, and is used to seal that end. Through the cooperation of the sealing end cap 223 and the sealing component 224, a closed sealing space is formed between the sealing component 224, the sealing end cap 223 and the bearing housing component 221, so as to achieve comprehensive protection of the internal structure of the bearing housing component 221.

[0057] The sealing component 224 includes a labyrinth seal 2241 and a floating seal 2242. The sealing component 224 employs a double-sealing structure to further enhance the sealing effect. The labyrinth seal 2241 is coaxially sleeved on the outside of the rotating shaft 211 and installed at one end of the bearing housing component 221 near the cutting drum assembly 210. It forms a preliminary seal through multiple labyrinth gaps, preventing most dust and slag from entering the sealed space. The floating seal 2242 is positioned between the labyrinth seal 2241 and the rotating shaft 211, sealing the gap between them and compensating for the sealing gap of the labyrinth seal 2241, forming a secondary seal. This effectively prevents small impurities from entering the sealed space through the gaps, ensuring the normal operating environment of the tapered bearing 222 and the rotating shaft 211.

[0058] For example, the labyrinth seal 2241 is an annular member, the outer edge of which is connected to the bearing housing component 221.

[0059] The bearing housing component 221 includes a bearing mounting base 2211 and a bearing housing 2212. The bearing mounting base 2211 is fixedly installed on the machine body 100, serving as the mounting base for the bearing housing 2212. The bearing housing 2212 is coaxially nested inside the bearing mounting base 2211, and the outer ring of the tapered bearing 222 is embedded in the bearing housing 2212. Through the cooperation between the bearing mounting base 2211 and the bearing housing 2212, the tapered bearing 222 can be accurately positioned and stably installed. At the same time, the separate structure of the bearing mounting base 2211 and the bearing housing 2212 also facilitates the subsequent inspection and replacement of the tapered bearing 222, reducing maintenance costs.

[0060] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "exemplary embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An open-pit mining machine, characterized in that, include: The body has a mounting surface at the bottom; A cutting roller mechanism is disposed on the mounting surface; A mobile lifting assembly is mounted on the machine body to drive the machine body to move and to control the parallelism between the mounting surface and the mining working face. The first power unit includes a first engine and a first generator connected to the first engine, both of which are mounted on the body; The second power unit includes a second engine and a second generator connected to the second engine, both of which are mounted on the body; A converter cabinet is installed on the machine body. The first generator is connected to the converter cabinet, and the second generator is connected to the converter cabinet. The converter cabinet is used to receive power from the first generator and / or power from the second generator. The converter cabinet is also used to provide power to the moving lifting assembly and / or the cutting drum mechanism.

2. The open-pit mining machine according to claim 1, characterized in that, The cutting drum mechanism includes: The cutting drum assembly is rotatably mounted on the bottom of the machine body and located at the center of gravity of the open-pit mining machine. The cutting drum assembly includes a rotating shaft and a cutting drum coaxially and fixedly connected to the rotating shaft. A sealing assembly is fixedly installed on the machine body and forms a sealed space inside it. The first end of the rotating shaft is located inside the sealed space, and the cutting cylinder is located outside the sealed space.

3. The open-pit mining machine according to claim 2, characterized in that, Also includes: The side plate is slidably mounted on the side wall of the cutting roller assembly along the height direction of the cutting roller assembly; A pressure detection cylinder includes a cylinder body and a telescopic rod slidably mounted inside the cylinder body. The cylinder body is fixedly mounted on the cutting roller assembly, and the end of the telescopic rod away from the cylinder body is fixedly mounted on a side plate. The pressure detection cylinder is used to monitor the pressure data of the side plate. An inclination sensor is mounted on the machine body to acquire inclination data of the machine body; The data acquisition module is connected to both the tilt sensor and the pressure detection cylinder, and is used to acquire the pressure data and / or the tilt data. The main control unit is connected to both the data acquisition module and the mobile lifting assembly, and is used to receive the pressure data and / or the tilt angle data transmitted by the data acquisition module. It is also used to generate a control signal based on the pressure data and / or the tilt angle data, so that the movable lifting assembly adjusts the position of the mounting surface according to the control signal.

4. The open-pit mining machine according to claim 3, characterized in that, The control signal includes a first signal and a second signal; there are four movable lifting components, which are evenly distributed at the lower end of the machine body, and each movable lifting component includes: A movable component is located at the lower end of the body; A first controller is connected to the main controller and is used to receive a first signal from the main controller. The first controller is connected to the moving component and is used to control the moving component to drive the machine body to move in a direction parallel to the mining face according to the first signal. A lifting component is disposed between the moving component and the machine body; The second controller is connected to the main controller and is used to receive a second signal from the main controller. The second controller is connected to the lifting component and is used to control the extension and retraction of the lifting component according to the second signal to change the distance between the moving component and the machine body.

5. The open-pit mining machine according to claim 3, characterized in that, Also includes: A first receiving component is disposed on the machine body. The first receiving component has an input end and an output end. The input end is located on the side close to the cutting drum assembly. The first receiving component is used to receive and transfer the material cut by the cutting drum assembly. A shovel plate is disposed on the machine body and located between the cutting roller assembly and the input end. The shovel plate is used to guide the material cut by the cutting roller assembly into the first receiving assembly.

6. The open-pit mining machine according to claim 5, characterized in that, Also includes: The second receiving component is disposed on the machine body and is used to receive and transfer the material transferred from the output end.

7. The open-pit mining machine according to claim 6, characterized in that, Also includes: The rotating assembly is rotatably mounted on the machine body, and the second receiving assembly is fixedly mounted on the rotating assembly.

8. The open-pit mining machine according to any one of claims 2 to 7, characterized in that, The cutting drum mechanism also includes: A roller guard is disposed on the cutting roller assembly and on the side close to the machine body.

9. The open-pit mining machine according to claim 8, characterized in that, The sealing assembly includes: A bearing housing component is fixedly installed on the machine body, and the first end of the rotating shaft is disposed inside the bearing housing component, and the rotating shaft is coaxially disposed with the bearing housing component; A tapered bearing is coaxially disposed on the outside of the rotating shaft, and the outer ring of the tapered bearing is embedded in the bearing housing component; A sealing end cap is disposed at the end of the bearing housing component away from the cutting drum assembly, for sealing the end of the bearing housing component away from the cutting drum assembly; A sealing component is coaxially disposed on the outside of the rotating shaft and located at one end of the bearing housing component near the cutting drum assembly, for sealing the end of the bearing housing component near the cutting drum assembly; A sealing space is formed between the sealing component, the sealing end cap, and the bearing housing component.

10. The open-pit mining machine according to claim 9, characterized in that, The sealing component includes: The labyrinth seal is coaxially disposed on the outside of the rotating shaft and located at one end of the bearing housing component near the cutting drum assembly; A floating seal is disposed between the labyrinth seal and the rotating shaft to seal the space between the labyrinth seal and the rotating shaft; The bearing housing component includes: The bearing mounting base is fixedly installed on the machine body; The bearing housing is coaxially nested within the bearing mounting base, and the outer ring of the tapered bearing is embedded within the bearing housing.

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