Feeding process of vertical drum coal mining machine

Abstract

The invention relates to the technical field of coal mining, in particular to a feeding process of a vertical drum coal mining machine. The technical defects of reciprocating operation, complex track and redundant process of the coal mining machine in a beveling feed process are mainly solved. The process comprises the following steps: pushing a conveyor in front of a coal mining machine to form an S bend; executing vertical feed in the head / tail area of the conveyor; the coal mining machine enters the S-bend stage to adjust the track of the roller to cut straight the coal wall; the end bracket is pushed to be straight by a conveyor; the coal mining machine linearly runs and synchronously follows the machine to pull the frame; adjusting the cutting depth of the front roller in an area exceeding the length of the coal mining machine from the coal wall; and after linearly cutting through the end coal wall, reversely entering a new cycle. Vertical feeding replaces oblique cutting, the procedures of triangular coal cutting and reverse coal sweeping are omitted, and one-way linear continuous cutting of the coal mining machine is achieved. The method has the remarkable advantages that the equipment moving track is simplified, the complexity of a control system is reduced, the cycle operation time is shortened, and basic process support is provided for efficient mining.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining, in particular to a vertical drum shearer entry process. BACKGROUND

[0002] In the field of underground coal mining, the inclined entry process is widely used in fully mechanized coal mining face as the mainstream technical solution. This process requires the shearer to enter the coal wall through an inclined cutting method in the conveyor end area, and to complete a single cycle of coal cutting by going through multiple processes such as cutting triangular coal and reverse sweeping coal.

[0003] During this process, the shearer's running track is complex: the initial inclined entry requires a certain angle to cut into the coal wall, the cutting of triangular coal requires repeated adjustment of the drum height and traction direction, and the reverse sweeping coal stage requires a return run to clean up the residual coal. Frequent start-stop and direction changes increase the process time. The long-standing technical bottleneck in the industry is that the process has high redundancy, a single cycle needs to complete multiple independent processes, and the auxiliary operation time ratio is large; the equipment needs to run in reverse. Although some individual improvement schemes have tried to optimize, they have not broken the fundamental logic of reciprocating operation and cannot fundamentally solve the problem of complex and time-consuming processes. Therefore, the existing technology needs further development. SUMMARY

[0004] The purpose of the present application is to overcome the above technical deficiencies and provide a vertical drum shearer entry process to solve the problems existing in the prior art. To achieve the above technical purpose, the present application provides a vertical drum shearer entry process, which comprises: a) moving the conveyor in front of the shearer running direction to form an S-bend at a distance greater than the length of the shearer from the coal wall; b) performing vertical entry of the vertical drum shearer in the conveyor head or tail area; c) making the vertical drum shearer run to the conveyor tail or head to enter the S-bend stage, and adjusting the drum track to cut the straight coal wall; d) cooperating with the end area support to perform the moving of the conveyor to straighten the conveyor; e) making the vertical drum shearer run straight on the conveyor to the tail or head, while the support sequentially performs the action of following the machine and pulling the support; f) adjusting the cutting depth of the front drum when running straight to the conveyor tail or head area and being at a distance greater than the length of the shearer from the coal wall; g) running straight to the tail or head to make the front drum cut through the coal wall; h) driving from the tail or head to the head or tail to enter the next cycle.

[0005] Specifically, step b) further comprises: the upper and lower telescopic drums of the shearer are telescoped, the swing arm is swung up and down, and the drum cutting depth is adjusted.

[0006] Specifically, in step b), the left vertical roller cuts to the full cutting depth, and the right vertical roller cuts to a partial cutting depth.

[0007] Specifically, step c) also includes: the upper and lower telescopic drums of the coal mining machine extend and retract, the rocker arm swings up and down, and they work together to cut the coal wall.

[0008] Specifically, adjusting the drum trajectory in step c) involves oscillating the rocker arm to make the drum trajectory cut straight into the coal wall.

[0009] Specifically, step e) also includes: the upper and lower telescopic drums of the coal mining machine extend and retract, the rocker arm swings up and down, and they work together to cut the coal seam, while the support performs the following action of pulling the support.

[0010] Specifically, in step e), the supports sequentially perform the following actions, including synchronously pushing the supports to maintain the position of the conveyor during the straight-line operation of the coal mining machine.

[0011] Specifically, step f) also includes: extending and retracting the upper and lower telescopic drums of the coal mining machine, and swinging the rocker arm up and down.

[0012] Specifically, step g) also includes: the upper and lower telescopic drums of the coal mining machine extend and retract, the rocker arm swings up and down, and the coordinated action cuts the coal seam until it cuts through the coal wall.

[0013] Specifically, in step d), the pushing conveyor is executed by the end area support to straighten the conveyor; and the entire process eliminates the oblique cutting, triangular coal cutting and reverse coal sweeping processes, realizing one cut of coal in one go without going back and forth.

[0014] Beneficial effects: This process achieves a technological breakthrough through architectural innovation: The core effect lies in improving the traditional cutting logic. Vertical cutting technology allows the coal mining machine to cut directly perpendicular to the coal wall at the end of the conveyor; it simultaneously eliminates the processes of cutting triangular coal and reverse sweeping, simplifying the coal mining machine's trajectory to a single-direction straight-line cut and eliminating the reciprocating process.

[0015] System optimization is reflected in the coordination of mining and transportation. The S-bend preforming technology creates an adjustment window for subsequent straightening of the coal face by controlling the bending point of the conveyor; the support following the machine pull action is embedded in the main process of straight coal cutting.

[0016] The direct advantages of this process are: it simplifies the coal mining process, shortens the cycle operation time, and improves mining efficiency; the linear continuous operation mode of the equipment helps reduce the operational complexity caused by frequent start-stop and reversal; and cutting through the coal wall provides conditions for the smooth movement of the support and conveyor. Attached Figure Description

[0017] Figure 1A block diagram of the feed process of the vertical drum coal mining machine of the present invention is shown; Figure 2 A schematic diagram of the vertical drum coal mining machine of the present invention in stage 1 state is shown; Figure 3 A schematic diagram of the vertical drum coal mining machine of the present invention in stage 2 state is shown; Figure 4 A schematic diagram of the vertical drum coal mining machine of the present invention in stage 3 state is shown; Figure 5 A schematic diagram of the vertical drum coal mining machine of the present invention in stage 4 state is shown; Figure 6 A schematic diagram of the vertical drum coal mining machine of the present invention in stage 5 state is shown; Figure 7 A schematic diagram of the vertical drum coal mining machine of the present invention in stage 6 state is shown; Figure 8 A schematic diagram of the vertical drum coal mining machine of the present invention in stage 7 is shown. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention. The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0019] Please see Figures 2-8 This invention provides a feed process for a vertical drum coal mining machine, comprising: a) Push the conveyor in front of the coal mining machine in the direction of operation to form an S-bend at a distance from the coal face greater than the length of the coal mining machine; b) Perform vertical feed of the vertical drum coal mining machine in the head or tail area of ​​the conveyor; c) Move the vertical drum coal mining machine toward the tail or head of the conveyor into the S-curve stage, and adjust the drum trajectory to cut straight into the coal wall; d) In conjunction with the end area support, perform a pushing conveyor to straighten the conveyor; e) Make the vertical drum coal mining machine run in a straight line towards the tail or head of the conveyor, while the support frame performs the following frame pulling action in sequence. f) When the machine is running in a straight line to the tail or head area of ​​the conveyor and the distance from the coal wall is greater than the overall length of the coal mining machine, adjust the cutting depth of the front drum. g) Run in a straight line to the tail or head of the machine so that the front drum cuts through the coal wall; h) From the tail or nose, proceed to the nose or tail and enter the next cycle.

[0020] Specifically, step b) also includes: extending and retracting the upper and lower telescopic drums of the coal mining machine, swinging the rocker arm up and down, and adjusting the drum cutting depth, as shown in stage 2.

[0021] It should be further explained that in step (b), the telescopic drum extends and retracts vertically to adapt to changes in coal seam thickness, and the rocker arm swings back and forth to control the cutting depth. It is understood that the telescopic stroke ensures the drum covers changes in coal seam thickness; the rocker arm's swing angle not only controls the cutting depth but also avoids interference with the support.

[0022] Specifically, in step b), the left vertical roller cuts to the full cutting depth, while the right vertical roller cuts to a partial cutting depth, as shown in stage 2. It is understandable that, due to the positional limitations of the coal mining machine in the roadway, the left roller is responsible for the main cutting task, while the right roller, unable to completely cover the right side of the coal wall, undertakes auxiliary cutting and coal loading functions. This helps balance the equipment torque and improve coal loading efficiency.

[0023] Specifically, step c) also includes: the upper and lower telescopic drums of the coal mining machine extend and retract, the rocker arm swings up and down, and they work together to cut the coal wall, as shown in stage 3.

[0024] It should be further explained that in step (c), the telescopic roller extends and retracts, the rocker arm swings, and the trajectory adjustment algorithm controls the tangent angle of the roller to be parallel to the coal wall in real time. This helps to improve the cutting accuracy and coal wall flatness in the S-bend stage.

[0025] Specifically, adjusting the roller trajectory in step c) involves oscillating the rocker arm to make the roller trajectory cut straight into the coal wall, as shown in stage 3.

[0026] It should be further explained that in step (c), the telescopic drum extends and retracts to control the mining height, the rocker arm swings back and forth to control the undercut and cutting depth, and the trajectory adjustment algorithm controls the drum tangent angle to be parallel to the coal wall in real time. This helps improve the cutting accuracy and coal wall flatness in the S-bend stage, while ensuring the control effect of the roof and floor.

[0027] Specifically, step e) also includes: the upper and lower telescopic drums of the coal mining machine extend and retract, the rocker arm swings up and down, and they work together to cut the coal seam, while the support performs the following action of pulling the support, as shown in stage 5.

[0028] It should be further explained that in step (e), the telescopic drum extends and retracts, the rocker arm swings automatically with the rise and fall of the coal seam, and the support frame lags behind the coal mining machine by a certain distance. This is beneficial for dynamically adapting to changes in the coal seam and improving the roof control effect.

[0029] Specifically, in step e), the supports sequentially perform the following actions, including the synchronous movement of the supports to maintain the position of the conveyor during the straight-line operation of the coal mining machine, as shown in stage 5.

[0030] Specifically, in step e), the support sequentially performs the following actions: during the straight-line movement of the coal mining machine, the support moves synchronously to maintain the position of the conveyor, as shown in stage 5. It should be further noted that the support pushing cylinder is linked to the speed of the coal mining machine, which helps maintain the conveyor's status.

[0031] Specifically, step f) also includes: extending and retracting the upper and lower telescopic drums of the coal mining machine, and swinging the rocker arm up and down, as shown in stage 6. It should be further explained that the cutting depth of the front drum is adjusted in step (f).

[0032] Understandably, the reason for increasing the cutting depth of the front drum is that the front drum completes the work of cutting through the coal wall, leaving space for the tail section to turn, and making the cycle connection smoother.

[0033] Specifically, step g) also includes: the upper and lower telescopic drums of the coal mining machine extend and retract, the rocker arm swings up and down, and they work together to cut the coal seam until they cut through the coal wall, as shown in stage 7.

[0034] It should be further explained that in step (g), the telescopic drum extends and the rocker arm swings down to ensure that the coal face is cut through to its full height.

[0035] Specifically, in step d), the pushing conveyor is executed by the end area support to straighten the conveyor, as shown in stage 4; and the entire process eliminates the oblique cutting, cutting triangular coal and reverse sweeping coal processes, realizing one cut of coal in one go without going back and forth, as described in the invention.

[0036] Understandably, synergistic optimization of the entire process helps reduce energy consumption per ton of coal.

[0037] The workflow of this invention is illustrated below with specific examples: 1. Stage 1: Push the transport aircraft to form an S-curve.

[0038] 2. Stage 2: The cutting head feeds vertically, the left drum reaches full cutting depth, and the right drum reaches partial cutting depth.

[0039] 3. Stage 3: Enter the S-bend and adjust the roller trajectory to cut straight into the coal wall.

[0040] 4. Stage 4: The support is pushed by the transport machine to straighten it.

[0041] 5. Stage 5: Straight coal cutting, with supports pulling the machine along.

[0042] 6. Stage 6: Adjust the cutting depth of the front roller.

[0043] 7. Stage 7: Cut through the coal face at the end.

[0044] 8. Stage 8: The coal mining machine reverses direction to enter the next cycle.

[0045] Understandably, in order to solve the problem of complex trajectories of coal cutting machines in fully mechanized mining and longwall mining faces, reduce the operating time of coal cutting machines, and improve mining efficiency, this invention provides a vertical drum coal cutting machine feed process.

[0046] like Figure 1 As shown, the feed process of the vertical drum coal mining machine includes: The coal mining machine pushes the conveyor forward in the direction of operation, forming an S-bend at a distance from the coal face greater than the entire length of the coal mining machine.

[0047] The vertical drum coal mining machine located in the head (tail) area of ​​the conveyor has a vertical feed.

[0048] The vertical drum coal mining machine moves towards the tail (head) of the conveyor and enters the S-curve stage, adjusting the drum trajectory to cut straight into the coal wall; the end area support pushes the conveyor, and the conveyor straightens; the vertical drum coal mining machine moves in a straight line towards the tail (head) of the conveyor, and the support performs the following actions of pulling the support and pushing the conveyor in sequence.

[0049] When the vertical drum coal mining machine is running in a straight line, and the distance between the tail (head) area of ​​the conveyor and the coal wall is greater than the overall length of the coal mining machine, the front drum adjusts the cutting depth; the vertical drum coal mining machine runs in a straight line to the tail (head), and the front drum cuts through the coal wall; the vertical drum coal mining machine moves from the tail (head) to the head (tail) to enter the next cycle.

[0050] Furthermore, the vertical cutting process of the vertical drum coal mining machine head (tail) located in the conveyor head (tail) area also includes: extending and retracting the upper and lower telescopic drums of the coal mining machine, swinging the rocker arm up and down, and adjusting the drum cutting depth.

[0051] Furthermore, as the vertical drum coal mining machine moves towards the tail (head) of the conveyor and enters the S-curve stage, the steps of adjusting the drum trajectory to cut straight into the coal wall also include: extending and retracting the upper and lower telescopic drums of the coal mining machine, and swinging the rocker arm up and down.

[0052] Furthermore, the process of the vertical drum coal mining machine moving in a straight line towards the tail (head) of the conveyor also includes: the extension and retraction of the upper and lower telescopic drums of the coal mining machine, and the swinging of the rocker arm up and down.

[0053] Furthermore, when the distance between the tail (head) area of ​​the vertical drum coal mining machine and the coal wall is greater than the overall length of the coal mining machine during straight-line operation, the step of adjusting the cutting depth of the front drum also includes: extending and retracting the upper and lower telescopic drums of the coal mining machine, and swinging the rocker arm up and down.

[0054] Furthermore, the process of the vertical drum coal mining machine moving in a straight line to the tail (head) and the front drum cutting through the coal wall also includes: the extension and retraction of the upper and lower telescopic drums of the coal mining machine, and the up and down swinging of the rocker arm. Specifically, the vertical drum coal mining machine cutting process of this application adopts a vertical cutting method in the end area to cut coal, so as to realize the entire cutting process cycle, thereby achieving uninterrupted cutting of the coal seam and improving coal mining efficiency.

[0055] In this embodiment, as Figures 2 to 8 In the specific implementation shown, the number of stents is unlimited.

[0056] Phase 1, initial state: The vertical drum coal mining machine is located in the head (tail) area. The coal mining machine pushes the conveyor in front of it, forming an S-curve at a distance from the coal wall greater than the entire length of the coal mining machine.

[0057] Phase 2: The vertical drum coal mining machine located in the head (tail) area of ​​the conveyor performs vertical cutting. After the drum extends beyond the top beam of the support, the drum extends and retracts, and the rocker arm swings up or down in coordination to cut the coal seam. The left vertical drum cuts to the full cutting depth, and the right drum cuts to a partial cutting depth.

[0058] Phase 3: The vertical drum coal mining machine moves towards the tail (head) of the conveyor and enters Phase S. The drum trajectory is adjusted to cut straight into the coal wall. At the same time, the drum extends and retracts, and the rocker arm swings up or down in coordination to cut the coal wall.

[0059] Phase 4: The support structure in the nose area pushes the transport aircraft, straightening it. Phase 5: The vertical drum coal mining machine moves in a straight line towards the tail (head) of the machine, while the drum extends and retracts, and the rocker arm swings up or down in coordinated motion to cut the coal seam. The support frame then performs a follow-up pulling action.

[0060] In stage 6, when the vertical drum coal mining machine moves in a straight line to the area at the tail of the conveyor where the distance from the coal face is greater than the overall length of the mining machine, the front drum adjusts the cutting depth. At the same time, the drum extends and retracts, and the rocker arm swings up or down, working in tandem to cut the coal seam.

[0061] Phase 7: The vertical drum coal mining machine moves in a straight line to the tail (head) of the conveyor. The front drum cuts through the coal wall, and at the same time the drum extends and retracts, and the rocker arm swings up or down, working together to cut the coal seam.

[0062] In stage 8, the vertical drum coal mining machine reverses direction and performs the action of stage 1, starting the next cycle.

[0063] As can be seen from the above description, the above embodiments of the present invention embody the following technical effects: By applying the technical solution of the present invention, the vertical drum coal mining machine of this application adopts a vertical cutting method in the end area to cut the coal seam, so as to realize the cyclical operation of the entire cutting process, thereby realizing uninterrupted cutting of the coal seam, simplifying the coal mining process, eliminating the coal mining processes such as oblique cutting, cutting triangular coal, and reverse sweeping, the coal mining machine realizes that one cut of coal is completed in one go without going back and forth, solving the problem of vertical cutting and improving coal mining efficiency.

[0064] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, provided that such combination does not contain contradictions.

[0065] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A vertical drum shearer face advancement process characterised by, The method comprises the following steps: a) pushing the conveyer in front of the running direction of the coal mining machine to form an S-bend at a distance greater than the length of the coal mining machine from the coal wall; b) performing vertical infeed of the vertical drum coal mining machine in the head or tail area of the conveyer; c) making the vertical drum coal mining machine run into the S-bend stage towards the tail or head of the conveyer and adjusting the drum trajectory to cut the straight coal wall; d) performing pushing of the conveyer in cooperation with the end area support to push the conveyer straight; e) making the vertical drum coal mining machine run straight on the conveyer towards the tail or head while the support sequentially performs the action of pulling the support following the machine; f) adjusting the cutting depth of the front drum when running straight to the tail or head area of the conveyer and at a distance greater than the length of the coal mining machine from the coal wall; g) running straight to the tail or head to make the front drum cut through the coal wall; h) driving from the tail or head to the head or tail to enter the next cycle.

2. The vertical drum coal cutter feed process of claim 1, wherein, Step b) further comprises: the upper and lower side telescopic drums of the coal mining machine are telescoped, the swing arm is swung up and down, and the cutting depth of the drum is adjusted.

3. The vertical drum coal cutter feed process of claim 2, wherein, In step b), the left vertical drum cuts to full depth and the right vertical drum cuts to partial depth.

4. The vertical drum coal cutter feed process of claim 1, wherein, Step c) further comprises: the upper and lower side telescopic drums of the coal mining machine are telescoped, the swing arm is swung up and down, and the coal wall is cut in cooperation.

5. The vertical drum coal cutter feed process of claim 4, wherein, The adjustment of the drum trajectory in step c) comprises cutting the drum trajectory straight to the coal wall by swinging the swing arm.

6. The vertical drum coal cutter feed process of claim 1, wherein, Step e) further comprises: the upper and lower side telescopic drums of the coal mining machine are telescoped, the swing arm is swung up and down, and the coal seam is cut in cooperation while the support performs the action of pulling the support following the machine.

7. The vertical drum coal cutter feed process of claim 6, wherein, The sequential action of pulling the support following the machine in step e) comprises synchronously pushing the support to maintain the position of the conveyer during the straight running of the coal mining machine.

8. The vertical drum coal cutter feed process of claim 1, wherein, Step f) further comprises: the upper and lower side telescopic drums of the coal mining machine are telescoped, and the swing arm is swung up and down.

9. The vertical drum coal cutter feed process of claim 1 wherein, Step g) further comprises: the upper and lower side telescopic drums of the coal mining machine are telescoped, the swing arm is swung up and down, and the coal seam is cut in cooperation until the coal wall is cut through.

10. The vertical drum coal cutter feed process of claim 1, wherein, The pushing of the conveyer in step d) is performed by the end area support to push the conveyer straight; and the whole process cancels the procedures of oblique infeed, cutting of triangular coal, and reverse sweeping of coal, realizing one-time cutting of coal without back and forth.

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