A coal seam mining and residue transporting integrated simulation device and a control method thereof

Abstract

This invention relates to the field of coal mining technology, and provides an integrated simulation device and control method for coal seam mining and slag transportation. The method includes: acquiring the compressive strength and material state indicators of similar materials in the coal seam; determining a comprehensive state correction coefficient based on preset benchmark strength parameters; calculating the cutting speed of the reciprocating cutting mechanism; after the reciprocating cutting mechanism completes at least one complete reciprocating cutting stroke based on the cutting speed, driving the feed module to perform split-feed according to the single feed amount; determining the amount of slag generated per unit time based on the cutting speed and single feed amount of the reciprocating cutting mechanism, and determining the operating parameters of the spiral slag conveying module based on the amount of slag generated, so that the spiral slag conveying capacity matches the amount of slag generated. This effectively improves the realism, stability, and repeatability of the coal mining simulation process.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and in particular to an integrated simulation device for coal seam mining and slag transportation and its control method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In the field of coal seam mining and slag transportation simulation, existing technologies have a basic simulation device architecture, which usually includes functional modules such as excavation, slag transportation, and feeding. This enables basic simulation operations of coal seam mining and slag transportation, providing certain experimental support for coal seam mining technology research and equipment performance verification.

[0004] From the perspective of control logic, existing technologies mostly adopt a fixed parameter control mode, that is, pre-setting core indicators such as the cutting mechanism speed, feed rate, and slag conveying mechanism operating parameters, and keeping the parameters constant during the simulation process to complete the test process of slag recovery and transportation. This has the following problems:

[0005] In existing technologies, cutting speed, feed rate, and other parameters are mostly empirical or fixed values. Under this mode, either the cutting parameters are too high, causing excessive disturbance to the model structure and destroying the realism of the simulation; or the parameters are too low, making it impossible to achieve effective material breakage, resulting in the failure of the simulation test.

[0006] In existing technologies, the excavation, slag conveying, and feeding modules operate independently, with no linkage feedback mechanism between parameters. This makes it impossible to achieve global collaborative optimization of cutting parameters, feeding parameters, and slag conveying parameters, ultimately resulting in poor realism, weak stability, and low repeatability in mining simulations. The simulation results do not closely match the actual coal seam mining conditions. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an integrated simulation device and control method for coal seam mining and slag transportation. It introduces a cutting parameter determination mechanism based on material mechanical state, a collaborative control strategy for reciprocating cutting and split-cutting feed, and a cutting-slag transportation matching method based on slag production prediction. This achieves organic synergy among multiple parameters and effectively improves the realism, stability, and repeatability of the mining simulation process.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] The first aspect of this invention provides a control method for an integrated simulation device for coal seam mining and slag transportation.

[0010] A control method for an integrated simulation device for coal seam mining and slag transportation includes:

[0011] Obtain the compressive strength and material state index of similar coal seam materials, combine them with the preset benchmark strength parameters, determine the comprehensive state correction coefficient, and calculate the cutting speed of the reciprocating cutting mechanism;

[0012] After the reciprocating cutting mechanism based on the cutting speed control completes at least one complete reciprocating cutting stroke, the drive feed module performs split feeding according to the single feed amount;

[0013] Based on the cutting speed and single feed rate of the reciprocating cutting mechanism, the amount of slag generated per unit time is determined, and the operating parameters of the screw conveyor module are determined according to the amount of slag generated, so that the screw conveyor capacity matches the amount of slag generated.

[0014] Furthermore, the material condition indicators include at least one of moisture content, molding density, and structural integrity.

[0015] Furthermore, the cutting speed of the reciprocating cutting mechanism is... ; where σ c The compressive strength of similar materials to coal seams, σ0 is a preset benchmark strength parameter, and K m This is the comprehensive state correction coefficient.

[0016] Furthermore, the single feed rate is Where α is the experimental scale correction factor, and σ c n represents the compressive strength of materials similar to those found in coal seams. c This refers to the cutting speed of the reciprocating cutting mechanism.

[0017] Furthermore, the amount of coal slag generated per unit time ; where n c This refers to the cutting speed of the reciprocating cutting mechanism. Δx is the reciprocating cutting frequency, Δx is the single-pass feed rate, and β is the slag formation coefficient.

[0018] Furthermore, the coal slag formation coefficient is determined based on the compressive strength and material condition indicators of similar materials in the coal seam.

[0019] Furthermore, the spiral slag conveying capacity ; where n h and n v γ represents the operating speed of the transverse and longitudinal slag conveying mechanisms, respectively; γ is the slag conveying capacity coefficient.

[0020] Furthermore, during the mining simulation, the amount of slag generated, Q, was compared. s With screw conveyor slag transport capacity Q t The operating parameters of the spiral slag conveyor module are adjusted to meet the following matching relationship: , where k is the safety matching coefficient.

[0021] The second aspect of the present invention provides an integrated simulation device for coal seam mining and slag transportation.

[0022] An integrated simulation device for coal seam mining and slag transportation includes an excavation module, a spiral slag conveying module, a feeding module, and an intelligent control cabinet, wherein the excavation module adopts a reciprocating cutting mechanism;

[0023] The intelligent control cabinet is electrically connected to the excavation module, the spiral slag conveying module, and the feeding module, respectively, and is equipped with a control method for an integrated coal seam mining and slag transportation simulation device as described in the first aspect, so as to control and coordinate the operating parameters of the excavation module, the spiral slag conveying module, and the feeding module.

[0024] Furthermore, it also includes a locking mechanism for locking the sliding frame of the feed module.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] This invention introduces a cutting parameter determination mechanism based on material mechanical state, a collaborative control strategy for reciprocating cutting and split-feed, and a cutting-slag matching method based on slag production prediction. This achieves organic synergy among multiple parameters and effectively improves the realism, stability, and repeatability of the mining simulation process.

[0027] The present invention determines a comprehensive state correction coefficient based on compressive strength, preset benchmark strength parameters and material state indicators, and determines the cutting speed of the reciprocating cutting mechanism accordingly, which can ensure effective material crushing while avoiding excessive disturbance to the model structure.

[0028] This invention determines the amount of slag generated per unit time based on the cutting speed and single feed rate of the reciprocating cutting mechanism, and determines the operating parameters of the spiral slag conveying module based on the amount of slag generated, so that the spiral slag conveying capacity matches the amount of slag generated, and the slag conveying capacity and slag generation rate are dynamically matched, avoiding the impact of slag accumulation, poor conveying or no-load operation on the stability of the model. Attached Figure Description

[0029] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an improper limitation of the invention.

[0030] Figure 1 A flowchart illustrating a control method for an integrated coal seam mining and slag transportation simulation device provided in an embodiment of the present invention;

[0031] Figure 2 This is a structural diagram of an integrated simulation device for coal seam mining and slag transportation provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection structure between the excavation module, the spiral slag conveying module, and the feeding module provided in an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the excavation module provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the feed module provided in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the spiral slag conveying module provided in an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the structure of the quick-locking mechanism provided in an embodiment of the present invention;

[0037] The module includes: 1. Excavation module, 1-1. Reciprocating cutting head, 1-2. Gearbox, 1-3. First slider, 1-4. Slider guide rail, 1-5. Lead screw nut, 1-6. Moving seat, 1-7. Transmission mechanism, 1-8. Cutting drive motor, 1-9. Reciprocating motion drive motor, 1-10. Fixed guide rail; 2. Spiral slag conveying module, 2-1. Horizontal slag conveying spiral, 2-2. Longitudinal slag conveying spiral, 2-3. Lower chute, 2-4. Slag funnel, 2-5. Slag conveying frame, 2-6. Slag conveying spiral rotary motor, 2-7. Upper chute; 3. Feeding module, 3-1. First connecting fixing plate, 3 -2. Feed screw; 3-3. Stepper motor; 3-4. Second slider; 3-5. Sliding guide rail; 3-6. Sliding frame; 3-7. Main frame; 3-8. Support frame; 3-9. Frame lifting mechanism; 3-10. Limit bolt; 3-11. Parallel coupling; 3-12. Worm gear screw jack; 3-13. Linear bearing; 3-14. Support shaft; 3-15. U-shaped cover; 3-16. Central shaft connecting rod; 3-17. Quick locking mechanism; 3-18. Second connecting fixing plate; 3-19. Quick locking pressure plate; 3-20. Quick locking bolt; 4. Intelligent control cabinet. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0042] Example 1

[0043] To address the mining requirements under different coal seam material conditions in coal seam physical similarity simulation tests, Embodiment 1 of this invention provides a control method for an integrated simulation device for coal seam mining and slag transportation, which is used to coordinate and control the reciprocating cutting, feeding, and spiral slag transportation processes.

[0044] This embodiment provides a control method for an integrated simulation device for coal seam mining and slag transportation. It introduces a cutting parameter determination mechanism based on material mechanical state, a collaborative control strategy for reciprocating cutting and split-cutting feed, and a cutting-slag transportation matching method based on slag production prediction. This achieves organic synergy among multiple parameters and effectively improves the realism, stability, and repeatability of the mining simulation process.

[0045] This embodiment provides a control method for an integrated simulation device for coal seam mining and slag transportation. It presets multiple parameter combination control modes. Different control modes correspond to different mechanical properties of similar materials in different coal seams or test conditions. The operating parameters can be quickly adjusted by switching modes.

[0046] This embodiment provides a control method for an integrated simulation device for coal seam mining and slag transportation, such as... Figure 1 As shown, it includes the following steps:

[0047] Step 1: Obtain the mechanical state parameters of similar materials in coal seams.

[0048] The mechanical state parameters include at least compressive strength and material condition indices. That is, before the test begins, the mechanical state of similar materials in the coal seam is characterized, including at least compressive strength testing and material condition assessment.

[0049] Among them, the material condition indicators include at least one of the following: moisture content, molding density, and structural integrity of similar coal seam materials.

[0050] The geometric similarity scale of the model test is 1:80. The similarity scale relationships are derived from the equilibrium equations, geometric equations, physical equations, and boundary conditions of the prototype and the model. In other words, coal seam similar materials refer to materials whose physical and mechanical parameters (compressive strength, permeability, etc.) can meet the following similarity criteria:

[0051] Geometric similarity: taking the length similarity coefficient , The model size is greater than the prototype size;

[0052] Temporal similarity: The time similarity coefficient is taken as... , The time of a certain process in the model is compared to the time of a certain process in the prototype;

[0053] Bulk density similarity: The bulk density similarity coefficient is taken as... , The model's bulk density is the same as the prototype's bulk density.

[0054] Elastic mode similarity: The elastic mode similarity coefficient is taken as... , The model's elastic modulus is compared to the prototype's elastic modulus;

[0055] Strength similarity: The strength similarity coefficient is taken as... , The model strength is compared to the prototype strength;

[0056] Permeability similarity: The permeability similarity coefficient is taken as... , The model permeability coefficient is the ratio of the prototype permeability coefficient;

[0057] Poisson's ratio similarity: Take the Poisson's ratio similarity coefficient , The model's Poisson ratio is compared to the prototype's Poisson ratio.

[0058] Step 2: Determine the comprehensive state correction coefficient based on the material condition index, and determine the cutting speed of the reciprocating cutting mechanism by combining the compressive strength and the preset benchmark strength parameters.

[0059] Among them, the reference strength parameter σ0 is the reference compressive strength value selected from pre-experiment or historical test data under the same test scale, similar material system and equipment conditions.

[0060] Among them, the comprehensive state correction coefficient K m Determined through empirical calibration, graded assignment, or interval value selection, this parameter characterizes the overall machinability of similar coal seam materials under current conditions. For example, in the low moisture content range (≤5%), the coal seam is dry and brittle, easily generating dust, and prone to brittle fracture during cutting. Cutting resistance is low, but tool wear is rapid, resulting in poor cutting stability. K mRecommended value: 0.85~0.95; moderate moisture content range (5%~15%), moderate coal seam wetness, certain plasticity and cohesion, separation in flakes or blocks during cutting, less dust, moderate cutting resistance, longer tool life, stable cutting process, K m Recommended value: 1.00~1.10; In the high moisture content range (≥15%), the coal seam is too wet and sticky, easily sticking to the cutting tool, significantly increasing cutting resistance, potentially forming a pasty material, affecting slag removal, resulting in high cutting resistance, easy tool clogging, and decreased mechanical efficiency. K m A value of 0.70 to 0.85 is recommended.

[0061] Specifically, the cutting speed n of the reciprocating cutting mechanism c It can be determined according to the following relationship:

[0062] ;

[0063] Where, σ c It represents the compressive strength of materials similar to those used in coal seams.

[0064] The cutting speed determined by the above method can ensure effective material crushing while avoiding excessive disturbance to the model structure.

[0065] Step 3: During the mining process, a split-cutting feed control strategy is adopted. Specifically, after the reciprocating cutting mechanism completes at least one full reciprocating cutting stroke, the feed module is driven to perform split-cutting feed according to the single feed amount.

[0066] The single feed rate is determined comprehensively based on the cutting speed, the compressive strength of similar materials in the coal seam, and the experimental scale correction factor, and is expressed as follows:

[0067] ;

[0068] Where α is the experimental scale correction coefficient, used to compensate for the difference between the experimental scale of the model and the actual engineering scale.

[0069] The experimental scale correction coefficient is determined based on the geometric similarity ratio of the model experiment.

[0070] By using a split-feed control method, the cutting thickness between each cutting unit can be kept relatively consistent, thereby improving the repeatability and stability of the mining simulation process.

[0071] Step 4: Determine the amount of slag generated per unit time based on the cutting speed and single feed rate of the reciprocating cutting mechanism, and determine the operating parameters of the screw conveyor module based on the amount of slag generated, so that the screw conveyor capacity matches the amount of slag generated.

[0072] The spiral slag conveying module includes a transverse spiral slag conveying mechanism (i.e., a transverse slag transport mechanism) and a longitudinal spiral slag conveying mechanism (i.e., a longitudinal slag transport mechanism). Based on the amount of coal slag generated, the target slag conveying capacity of the spiral slag conveying module is determined, and on this basis, the operating parameters of the transverse spiral slag conveying mechanism and the longitudinal spiral slag conveying mechanism are coordinated and adjusted to ensure that the spiral slag conveying process and the cutting slag production process are continuously matched.

[0073] In the simulation of coal seam mining, the reciprocating cutting process directly determines the coal slag generation rate per unit time, and the coal slag generation rate in turn imposes matching requirements on the operating parameters of the spiral slag conveying module.

[0074] In this embodiment, the amount of slag generated per unit time, Q s The amount of slag generated is determined by the cutting parameters of the reciprocating cutting mechanism; specifically, it can be expressed as:

[0075] ;

[0076] Among them, Q s n represents the amount of slag generated per unit time. c The cutting speed of the reciprocating cutting mechanism; Δx is the reciprocating cutting frequency; Δx is the single-pass feed rate; β is the slag formation coefficient, used to characterize the crushing efficiency and loosening characteristics of similar coal seam materials under the current working conditions.

[0077] As one implementation method, the coal slag formation coefficient β can be determined by pre-experimental calibration or empirical determination based on the compressive strength, moisture content and molding density of similar materials in the coal seam.

[0078] As another implementation method, the coal slag formation coefficient Basic coefficient The compressive strength under standard working conditions is determined by empirical values ​​of similar materials from the same type of coal seam under standard working conditions. The pressure is 5MPa, the moisture content w0 under standard working conditions is 8%, and the molding density ρ0 under standard working conditions is 0.85. The value range is 0.02~0.08m 3 / (r·Hz·mm); compressive strength correction factor This reflects the impact of compressive strength on crushing efficiency; the higher the strength, the more difficult the material is to crush. The smaller, , The index 0.3 represents the compressive strength of similar materials in actual coal seams, and is an empirical value that adapts to the strength-fracture characteristics of most similar coal-series materials; the moisture content correction factor... This reflects the effect of moisture content on the bulkiness of materials. The bulkiness is best when the moisture content is moderate; both excessively high and low moisture contents will reduce it. , The actual moisture content (percentage value, directly substituted into the numerical calculation, e.g., if the moisture content is 10%, substitute 10); this piecewise function is based on the general law of moisture content-looseness of coal-series materials, with 8% being the optimal moisture content node; forming density correction coefficient. This reflects the effect of density on the machinability of a material; the higher the density, the denser the material, and the more difficult it is to break. , The actual compaction density is represented by the index 0.5, which is an empirical value that takes into account both the impact of compaction density on crushing efficiency and looseness.

[0079] In this embodiment, the slag conveying capacity Q of the spiral slag conveying module per unit time is... t The slag conveying capacity of the screw conveyor, which is related to its structural and operational parameters, can be expressed as:

[0080] ;

[0081] Among them, Q t n represents the slag conveying capacity per unit time of the spiral slag conveying module. h and n v These represent the operating speeds of the transverse and longitudinal slag conveying mechanisms, respectively; γ is the slag conveying capacity coefficient, used to characterize the combined effects of screw diameter, screw pitch, and coal slag looseness; the slag conveying capacity coefficient γ can be obtained through structural parameter calculation or experimental calibration during the design phase.

[0082] During the longwall mining simulation, the amount of coal slag generated, Q, was compared. s With screw conveyor slag transport capacity Q t The operating parameters of the spiral slag conveyor module are adjusted to meet the following matching relationship: Where k is the safety matching coefficient, which is used to ensure that there is still sufficient slag transport margin when the amount of slag generated fluctuates.

[0083] By employing the above methods, the coal slag conveying capacity and the coal slag generation rate are dynamically matched, thus avoiding the impact of coal slag accumulation, poor conveying, or no-load operation on the stability of the model.

[0084] Step 5: Repeat steps 2 to 4 to achieve continuous simulation of the coal seam mining process.

[0085] This embodiment provides a control method for an integrated coal seam mining and slag transportation simulation device. It allows for the preset of multiple parameter combination control modes, each corresponding to different working conditions of similar coal seams. For example, high-strength, low-moisture-content coal seam similar materials correspond to a low cutting speed and small feed rate mode; low-strength, high-moisture-content coal seam similar materials correspond to a high cutting speed and large feed rate mode. During the experiment, parameters can be quickly reconstructed through mode switching based on the state of the similar coal seam materials or the experimental objective, improving experimental efficiency and adaptability.

[0086] This embodiment provides a control method for an integrated coal seam mining and slag transportation simulation device. By introducing a cutting parameter determination mechanism based on the mechanical state of similar coal seam materials, a split-cutting feed control strategy based on the previous reciprocating cutting stroke, and a cutting-slag transportation collaborative control method based on slag production prediction, the coal seam mining simulation process is transformed from traditional empirical and decentralized control to a multi-parameter coupled systematic control.

[0087] The control method of the integrated simulation device for coal seam mining and slag transportation provided in this embodiment not only improves the continuity and stability of the mining process, but also significantly enhances the realism and repeatability of the physical similarity simulation of the coal seam.

[0088] Example 2

[0089] This embodiment provides an integrated simulation device for coal seam mining and slag transportation.

[0090] This embodiment provides an integrated simulation device for coal seam mining and slag transportation, such as... Figure 2 As shown, it includes an excavation module 1, a spiral conveying module 2, a feeding module 3, and an intelligent control cabinet 4.

[0091] Excavation module 1 is used to realistically simulate on-site coal seam mining operations and design roof support to simulate on-site coal seam mining roof support operations.

[0092] The spiral slag conveying module 2 is located below the excavation module 1 and is used for continuous conveying and recycling of slag generated during mining.

[0093] The feed module 3 is connected to the spiral slag conveying module 2 and is used to achieve adaptive adjustment of the overall height and horizontal feed amount.

[0094] The intelligent control cabinet 4 is electrically connected to the excavation module 1, the spiral slag conveying module 2, and the feeding module 3, respectively. It is equipped with a control method for the integrated coal seam mining and slag transportation simulation device described in Example 1. This method is used to control and coordinate the operating parameters and action sequence of the excavation module 1, the spiral slag conveying module 2, and the feeding module 3 to simulate the complete coal seam mining and slag material handling process in an integrated manner.

[0095] The excavation module 1 adopts a reciprocating cutting mechanism to realistically simulate on-site coal seam mining operations. It can perform parallel synchronous mining of coal seams at the same height. The reciprocating mining method greatly shortens the mining simulation time and improves coal mining efficiency.

[0096] like Figure 4As shown, the reciprocating cutting mechanism includes a reciprocating cutting head 1-1 and a drive assembly. The drive assembly includes a gearbox 1-2, a first slider 1-3, a slider guide rail 1-4, a lead screw nut 1-5, a moving seat 1-6, a transmission mechanism 1-7, a cutting drive motor 1-8, and a reciprocating motion drive motor 1-9, enabling the reciprocating cutting head to perform reciprocating cutting. The first slider 1-3 is slidably mounted on the slider guide rail 1-4. The reciprocating motion drive motor 1-9 is installed in the upper feed chute 2-7, and drives the lead screw nut 1-5 to rotate through the transmission mechanism 1-7. Through the moving seat 1-6 and the first slider 1-3, it drives the reciprocating cutting head 1-1 to reciprocate on the slider guide rail 1-4. The cutting drive motor 1-8 drives the reciprocating cutting mechanism to perform cutting through the gearbox 1-2. The two ends of the lead screw nut 1-5 are rotatably connected to the inner side of the slag conveying frame 2-5. Cutting grinding heads are evenly arranged on the cutter head 1-1.

[0097] Fixed guide rail 1-10 is placed in the upper and lower roadways (two holes) excavated in the coal seam in the physical model test. After the fixed guide rail 1-10 is placed and stabilized, the upper and lower roadways of the coal mining device are placed on the guide rail 1-10 through the pulleys on the upper and lower roadways.

[0098] Note: In the physical model (simulation device), the two holes are called the upper and lower roadways. The two beams that the simulation device places in those two holes via fixed guide rails 1-10 are also called the upper and lower roadways.

[0099] The reciprocating cutting mechanism can be comprehensively controlled by the intelligent control cabinet 4 to realize the switching of the forward and reverse rotation modes of the reciprocating cutting head 1-1 and the adjustment of the cutting rate.

[0100] The reciprocating cutting mechanism can perform reciprocating mining of coal seams at the same height, realistically simulating on-site coal seam mining operations, greatly shortening the mining simulation time and improving coal mining efficiency.

[0101] In this embodiment, the structure of the spiral slag conveying module 2, the feeding module 3, and the intelligent control cabinet 4 is consistent with that of Chinese Patent Application No. 202311199838.3, entitled "A Roller-Type Model Test Coal Seam Mining and Slag Conveying Simulation System," as described below:

[0102] like Figure 3 and Figure 6 As shown, the spiral slag conveying module 2 includes a slag conveying frame 2-5, a transverse slag conveying mechanism, a longitudinal slag conveying mechanism, a slag funnel 2-4, and a slag recovery box. An upper feed chute 2-7 and a lower feed chute 2-3 are respectively provided on both sides of the slag conveying frame 2-5. The transverse slag conveying mechanism includes a transverse slag conveying spiral 2-1, a first conveying wheel, and a slag conveying spiral rotary motor 2-6. The longitudinal slag conveying mechanism includes a longitudinal slag conveying spiral 2-2, a DC motor, a motor reducer, a first rotating gear, a second rotating gear, a second conveying wheel, and a connecting belt.

[0103] Multiple night vision cameras are installed on the side of the slag transport frame 2-5 near the reciprocating cutting head 1-1.

[0104] like Figure 5 As shown, the feed module 3 includes a sliding frame 3-6, a main frame 3-7, a support frame 3-8, a frame lifting mechanism 3-9, and a sliding push mechanism. Second sliders 3-4 are provided on both sides of the bottom end of the sliding frame 3-6. Limit bolts 3-10 are installed on the main frame 3-7. Sliding guide rails 3-5 that mate with the second sliders 3-4 are provided on both sides of the top end of the main frame 3-7. The frame lifting mechanism 3-9 includes a worm gear screw jack 3-12, a linear bearing 3-13, a support shaft 3-14, and a central shaft connecting rod 3-16. The sliding push mechanism includes a first connecting fixing plate 3-1, a feed screw 3-2, a parallel coupling 3-11, and a stepper motor 3-3.

[0105] The slag transport frame 2-5 and the sliding frame 3-6 are connected by a detachable U-shaped protective cover 3-15.

[0106] The discrepancy between this patent and Chinese Patent Application No. 202311199838.3, entitled "A Roller-Type Model Test Coal Seam Mining and Slag Transportation Simulation System," is as follows: Figure 7 As shown, the quick-locking mechanism 3-17 includes a second connecting fixing plate 3-18, a quick-locking pressure plate 3-19, and a quick-locking bolt 3-20. The second connecting fixing plate 3-18 is installed on the main frame 3-7, the quick-locking pressure plate 3-19 is installed on the sliding frame 3-6, and one end of the quick-locking bolt 3-20 is fixed to the second connecting fixing plate 3-18, while the other end is quickly connected to the quick-locking pressure plate 3-19 and the second connecting fixing plate 3-18 through a nut, thereby realizing the quick locking of the sliding frame 3-6 and improving the overall efficiency.

[0107] The quick-locking mechanism provides instantaneous mechanical locking capability for the sliding frame, significantly enhancing the overall rigidity of the device under intermittent feeding or pause conditions. The optimized composite frame structure and the rational layout of key transmission components jointly ensure the smooth operation and durability of the device during long-term, high-load simulation tests.

[0108] This embodiment provides an integrated simulation device for coal seam mining and slag transportation. Through the physical integration and intelligent control coordination of the reciprocating cutting mechanism, the spiral slag conveying module and the adaptive feeding module, a three-in-one linkage mechanism of "cutting-slag conveying-feeding" is successfully constructed. This ensures that the three links of cutting, slag transportation and propulsion are seamlessly connected and speed matched during the simulated coal seam mining process, thereby realizing a highly simulated full-process integrated simulation.

[0109] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A control method for an integrated simulation device for coal seam mining and slag transportation, characterized in that: include: Obtain the compressive strength and material state index of similar coal seam materials, combine them with the preset benchmark strength parameters, determine the comprehensive state correction coefficient, and calculate the cutting speed of the reciprocating cutting mechanism; The cutting speed of the reciprocating cutting mechanism is ; where σ c The compressive strength of similar materials to coal seams, σ0 is a preset benchmark strength parameter, and K m This is the overall state correction factor; After the reciprocating cutting mechanism based on the cutting speed control completes at least one complete reciprocating cutting stroke, the drive feed module performs split feeding according to the single feed amount; The single feed rate is Where α is the experimental scale correction factor, and σ c n represents the compressive strength of materials similar to those found in coal seams. c The cutting speed of the reciprocating cutting mechanism; Based on the cutting speed and single feed rate of the reciprocating cutting mechanism, the amount of slag generated per unit time is determined, and the operating parameters of the screw conveyor module are determined according to the amount of slag generated, so that the screw conveyor capacity matches the amount of slag generated. The spiral slag conveying capacity ; where n h and n v These represent the operating speeds of the transverse and longitudinal slag conveying mechanisms, respectively; γ is the slag conveying capacity coefficient. The amount of coal slag generated per unit time ; where n c This refers to the cutting speed of the reciprocating cutting mechanism. The reciprocating cutting frequency is Δx, the single-pass feed rate is Δx, and the slag formation coefficient is β. Coal slag formation coefficient Basic coefficient The value range is 0.02~0.08m 3 / (r·Hz·mm); compressive strength correction factor This reflects the impact of compressive strength on crushing efficiency; the higher the strength, the more difficult the material is to crush. The smaller, , The compressive strength of materials similar to those in actual coal seams; This refers to the compressive strength under standard operating conditions. This is the moisture content correction factor; This represents the actual moisture content. Molding density correction factor This reflects the effect of density on the machinability of a material; the higher the density, the denser the material, and the more difficult it is to break. , ρ0 represents the actual molding density; ρ0 represents the molding density under standard working conditions. During the longwall mining simulation, the amount of coal slag generated, Q, was compared. s With screw conveyor slag transport capacity Q t The operating parameters of the spiral slag conveyor module are adjusted to meet the following matching relationship: Where k is the safety matching coefficient; Multiple parameter combination control modes are preset, with different control modes corresponding to different coal seam similar material working conditions: low cutting speed and small feed rate mode corresponds to high strength and low moisture content coal seam similar materials; high cutting speed and large feed rate mode corresponds to low strength and high moisture content coal seam similar materials. During the test, the parameters can be quickly reconstructed by switching modes according to the state of the coal seam similar material or the test objective, thereby improving the test efficiency and adaptability.

2. The control method of the integrated simulation device for coal seam mining and slag transportation as described in claim 1, characterized in that: The material condition indicators include at least one of moisture content, molding density, and structural integrity.

3. The control method of the integrated simulation device for coal seam mining and slag transportation as described in claim 1, characterized in that: The coal slag formation coefficient is determined based on the compressive strength and material condition indicators of similar materials in the coal seam.

4. An integrated simulation device for coal seam mining and slag transportation, characterized in that: It includes an excavation module, a spiral slag conveying module, a feeding module, and an intelligent control cabinet, and the excavation module adopts a reciprocating cutting mechanism; The quick-locking mechanism includes a second connecting fixing plate, a quick-locking pressure plate, and a quick-locking bolt. The second connecting fixing plate is installed on the main frame, the quick-locking pressure plate is installed on the sliding frame, and one end of the quick-locking bolt is fixed to the second connecting fixing plate. The other end is connected to the quick-locking pressure plate and the second connecting fixing plate by a nut, thereby realizing the quick locking of the sliding frame and improving the overall efficiency. The intelligent control cabinet is electrically connected to the excavation module, the spiral slag conveying module, and the feeding module, respectively, and is equipped with a control method for an integrated coal seam mining and slag transportation simulation device as described in any one of claims 1-3, so as to control and coordinate the operating parameters of the excavation module, the spiral slag conveying module, and the feeding module.

5. The integrated simulation device for coal seam mining and slag transportation as described in claim 4, characterized in that: It also includes a locking mechanism for locking the sliding frame of the feed module.

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