A coal roadway fast excavation self-moving coal bunker post-matching system and implementation method

Abstract

"A self-moving coal bunker and its supporting system and implementation method for rapid coal roadway excavation" belongs to the field of complete sets of equipment and technical methods for coal mine roadway excavation. The mechanical horizontal coal bunker (4) and other equipment are arranged behind the near-horizontal rapid excavation equipment (1) to realize the automatic adaptation of the length of the coal flow buffer, continuous transportation and ventilation, power supply, water supply and communication pipelines with the equipment, realize the real-time extension of the tail of the telescopic belt conveyor, realize the planned operation management of the supporting system based on the 1m interval of the tunneling support, and facilitate the continuity of the tunneling equipment (1) in every 5m operation cycle. The supporting system includes the horizontal coal bunker (4), equipment vehicle (3), straddle transfer conveyor (2) and self-extending tail (5), etc. The equipment vehicle (3) and the horizontal coal bunker (4) are combined to form the self-moving coal bunker. The implementation and self-moving method of each part of the self-moving coal bunker are explained, as well as the mutual coordination of every 50m operation cycle, every 5m operation cycle and every 1m operation cycle, and the normal operation method of the telescopic belt conveyor tail extending 5m×10m distance autonomously.

Description

Technical Field

[0001] This patented technology arranges a mechanical self-moving horizontal coal bunker (4) in the supporting system after rapid excavation of coal roadways, realizing the automatic length adaptation of coal flow buffering, continuous transportation, and pipelines such as ventilation, power supply, water supply, and communication as the equipment moves during rapid excavation. This is beneficial to the excavation continuity of the excavation equipment (1) in every 5m excavation operation cycle. It explains the method of achieving mutual coordination between the supporting system with the self-moving coal bunker as the core and the operation cycles of every 50m, every 5m, and every 1m in rapid excavation of coal roadways. This technology belongs to the field of complete sets of equipment and technical methods for coal mine roadway excavation. Background Technology

[0002] With the continuous emergence of "high-performance tunneling machines", their high performance is often constrained by the inability of supporting equipment to match, which also limits the further improvement of the overall mechanization and automation of tunneling face operations. Tunneling equipment (1) and coal extraction system are interdependent. When continuous and extendable transportation technology emerges, tunneling capacity will be greatly improved.

[0003] The use of complete sets of mechanized equipment during coal mine roadway excavation can significantly improve excavation efficiency and the safety and comfort of workers. Commonly used complete sets of equipment consist of excavation equipment (1) and subsequent transfer, crushing, and transportation equipment. These subsequent supporting transportation equipment are usually referred to as the post-excavation supporting system. Compared with intermittent transportation systems, continuous transportation supporting systems are more efficient, but they also have problems such as longer auxiliary operation time, lower mechanization level, and shorter effective equipment operating time.

[0004] According to Wang Yun's 2017 publication, "Post-Tunneling Support Systems for Rapid Excavation," published by the Taiyuan Research Institute of China Coal Technology & Engineering Group Co., Ltd., common post-tunneling support systems include: ① Conventional belt conveyor systems mainly consist of a mobile crusher, a belt conveyor, and a telescopic belt conveyor tail section. The unloading end of the belt conveyor is supported on the tail section of the telescopic belt conveyor by a traveling trolley. The maximum effective overlap stroke L allows the next tunneling cycle to begin after the tail section has been moved and the telescopic belt conveyor has extended. ② Tandem combined belt conveyor systems consist of a mobile crusher, an upper belt conveyor, a lower belt conveyor, and a telescopic belt conveyor tail section. ③ Overlapping telescopic post-tunneling systems consist of a mobile crusher, an upper belt conveyor, a lower telescopic conveyor, and a telescopic belt conveyor tail section. ④ Trailer-mounted post-tunneling systems consist of a mobile crusher, a trailer, and a telescopic belt conveyor tail section. All of the above methods are solutions that increase the effective overlap stroke L, reduce the auxiliary working time such as pulling and moving the tail of the telescopic belt conveyor; reduce the number of cycles required to complete the roadway, increase the single-operation cycle advance, and improve the roadway excavation efficiency.

[0005] According to the article "Research and Development of Horizontal Mechanical Coal Bunker in Tunneling Face" published by Lu Chengbin et al. of Wangzhuang Coal Mine of Lu'an Mining Group Co., Ltd., it is introduced that in the case that the subsequent coal transportation system of tunneling face requires many transfer links and long-distance transportation to complete, a horizontal coal bunker (4) is set up between the conveyor belt of tunneling face and the main transportation equipment in the mining area. The coal produced during the tunneling process is temporarily stored in the coal bunker. After the bunker is full, it is transferred to the conveyor belt of the mining area through the output equipment, so that the conveyor belt of the mining area can operate intermittently at full load, which is reasonable and effective.

[0006] According to Wang Bukang of the China Coal Research Institute Taiyuan Branch, in his article "Current Status and Development Trends of Coal Mine Tunneling Technology Research" published in the journal *Intelligent Mining*, the high-efficiency and rapid tunneling equipment system consists of an integrated tunneling and anchoring machine, an anchor bolt transfer machine, a straddle-type anchor bolt drilling rig, and a flexible continuous transportation system. Media reports also indicate that the China Coal Research Institute Taiyuan Branch has independently developed and manufactured China's first high-level intelligent rapid tunneling system. This complete set of equipment, over 150 meters long and dubbed the "Coal Sea Dragon," is the latest high-level intelligent rapid tunneling system developed and produced by the Taiyuan Branch. It enables parallel and continuous operations of tunneling, support, and transportation with a single button, allowing for surface control of underground equipment and increasing tunneling speed by 2 to 4 times.

[0007] According to the Baidu Encyclopedia entry for "Extendable Belt Conveyor," the length L of the storage bin must be sufficient to store one roll of conveyor belt (50 m or 100 m). During operation, the telescopic belt conveyor uses the extension and retraction of its body to shorten or extend the overall transport distance. The body gradually extends in the forward tunneling state, and several intermediate frames such as idlers, H-frames, and longitudinal beams are connected according to the extended length. Summary of the Invention

[0008] Purpose of the invention:

[0009] This invention is proposed based on the analysis of existing rapid coal roadway excavation technology and background technical data, and in combination with the operational characteristics of the integrated excavation, support and anchor machine of "A Coal Mine Excavation, Support and Anchoring Integrated Machine and Parallel Operation Method" with patent number ZL 201910186436.7. It aims to reduce auxiliary working time, increase single-operation cycle advance, and improve roadway excavation efficiency.

[0010] Technical solution:

[0011] The invention, "A self-moving coal bunker support system and implementation method for rapid coal roadway excavation," includes a horizontal coal bunker (4), an equipment vehicle (3), a straddle-type transfer conveyor (2), and a telescopic belt conveyor with an extended tail section (5). The horizontal coal bunker (4) and the equipment vehicle (3) together constitute the self-moving coal bunker. The mechanical horizontal coal bunker (4) enables coal flow buffering and continuous transportation, avoiding the impact of unplanned temporary shutdowns of subsequent equipment on the tunneling operation of the tunneling equipment (1), and completing the transportation, storage of materials, equipment layout, and equipment connection. The equipment vehicle (3) provides the mechanical horizontal coal bunker (4) with the power to move, operate, and anchor. It is equipped with the necessary pipeline and line redundancy to ensure ventilation, power supply, water supply, and communication for every 5m tunneling operation cycle, as well as the automatic adaptive control function to coordinate the preceding and following equipment and cylinders. This is beneficial for the tunneling equipment (1) in every 5m operation cycle. Continuity; The large-span straddle conveyor (2) is arranged between the tunneling equipment (1) and the horizontal coal bunker (4) to realize the transfer of coal flow in a 5m operation cycle; The design of the telescopic belt conveyor's self-extending tail (5) makes it possible for the telescopic belt conveyor to automatically extend according to the 5m operation cycle requirement, meeting the needs of every 50m operation cycle, and realizing the normal operation of the conveyor within a distance of 5m×10m through autonomous extension; Through reasonable operation logic, the supporting system after the self-moving coal bunker can realize the coordination of 50m operation cycle, 5m operation cycle and 1m operation cycle.

[0012] The aforementioned coal roadway rapid excavation self-moving coal bunker supporting system is a continuous transportation system for the production materials of the tunneling equipment (1) and a technical guarantee for ensuring continuous tunneling operations. It is also a buffer and continuity measure for the power supply, water supply, ventilation, dust removal, and communication systems required for its normal operation during rapid tunneling. It is applicable to near-horizontal roadways. Tunneling equipment (1) generally refers to full-face tunneling machines such as tunneling machines, continuous mining machines, tunneling and anchoring machines, and tunneling, support, and anchoring integrated machines used for rapid coal roadway excavation. Among them, the tunneling, support, and anchoring integrated machine consists of a tunneling and support vehicle (6) and an anchoring vehicle (7), requiring steady speed advancement and continuous operation, and minimizing unplanned downtime. For example Figure 1 As shown, the tail of the straddle conveyor (2) is connected to a relatively fixed position below the head of the scraper conveyor of the tunneling equipment (1) to receive materials. The head is between the feed inlet (76) of the horizontal coal bunker (4) and is placed in the middle of the roadway, on the same line as the tail of the scraper conveyor of the tunneling equipment (1). The self-moving coal bunker follows behind the tunneling equipment (1) and is placed on one side of the roadway, on the same line as the telescopic belt conveyor. The distance between its equipment vehicle (3) and the horizontal coal bunker (4) is relatively fixed. The self-moving coal bunker is on one side of the roadway, and its unloading end scraper conveyor head section (70) is on the same line as the tail of the telescopic belt conveyor, i.e., the self-extending tail (5). In this way, the supporting equipment is concentrated on one side of the roadway, and the length is greatly shortened, which provides convenience for the rapid transportation of materials required for tunneling and close proximity to the tunneling equipment (1).

[0013] The horizontal coal bunker (4) belongs to the category of mechanical coal bunkers. Its main components are scraper conveyor (68), cabin, guide material spiral blades and moving facilities. It consists of three main parts: front coal bunker (63), tail coal bunker (54) and coal bunker bottom plate (57). The dust removal fan (8) is placed on the tail coal bunker (54). The front coal bunker consists of the head compartment (69), the closing cover (65), the coal bunker body (77), the longitudinal spiral blades (64), and the wheelset (58); the tail coal bunker (54) consists of the tail compartment (53), the feed compartment (75), the transverse spiral blades (62), and the wheelset (58); the coal bunker bottom plate (57) consists of the rail (76) and the bottom plate, forming a rolling relationship with the front coal bunker (63) and the tail coal bunker (54); during the movement of the horizontal coal bunker (4), the front coal bunker (63) and the tail coal bunker (54) are fixed first, and the coal bunker bottom plate (57) is pulled a certain distance, and then the coal bunker bottom plate (57) is fixed again and the front coal bunker (63) and the tail coal bunker (54) are pulled the same distance. This method changes the sliding friction into rolling friction, which reduces the pulling force and reduces the ground pressure by increasing the bottom plate area.

[0014] Figure 8 The horizontal coal bunker (4) shown is the shortest structure. When needed, the number of coal bunker sections (77) and coal bunker bottom plate (57) can be added to meet the required storage volume. When the hood (65) of the horizontal coal bunker (4) is open and the scraper conveyor (68) is running at normal speed, the horizontal coal bunker (4) only operates as a conveyor. When the hood (65) is closed and the scraper conveyor (68) is running at slow speed, the horizontal coal bunker (4) operates as a storage device. At this time, the self-moving coal bunker does not move, and the tunneling equipment (1), the straddle transfer conveyor (2), and the telescopic belt conveyor extend from the tail (5) to their respective operating rhythms.

[0015] The head compartment (concealing the shell) (69) is equipped with a closing cover (65) that rotates around the closing shaft (66). Located at the end of the ascending section of the scraper conveyor, it normally rotates to the top of the compartment where the coal bunker is open. The closing cover (65) is driven by a hydraulic cylinder or motor to rotate to the bunker opening position and close the coal bunker. The scraper conveyor head section (70) overlaps with the self-extending tail section (5), and below it is a connecting lug for the pulling hydraulic cylinder (84). Below the scraper conveyor head section (70) are arranged... The support wheel (71) rolls on the guide rail (81) arranged on the tail frame (80) for a distance of 0-5m. Below the crossbeam (74) fixed to the head section (70) of the scraper conveyor, there is a set of lifting cylinders (73). These cylinders dynamically and constantly control the lifting support wheel (72) rolling on the ground below, so that their support force on the bottom plate is balanced and slightly less than the support force of the support wheel (71). The two complement each other to achieve full-span support for the head section (70) of the scraper conveyor. The coal bunker body (77) has longitudinal spiral blades (64) inside, which push the upper coal storage towards the head of the machine. The tail compartment (53) is equipped with the tail of the scraper conveyor and the connecting lugs of the coal bunker traction cylinder (43) of the equipment car (3), as well as the three-ring chain (56) connected to the straddle section support (27) of the straddle transfer conveyor (2). The tail coal bunker (54) has an asymmetrical structure on the left and right sides. The feed inlet (76) protruding towards the middle of the roadway is equipped with feed guide rails (55) for the head section and the overlapping wheel set (21) of the straddle transfer conveyor (2) to travel. During the process of the straddle section running to the overlapping end, the three-ring chain (56) gradually unfolds the straddle section support (27) and limits the stroke. The scraper conveyor trough arranged at the bottom of the feed hopper (75) and the coal bunker (77) together with the head, tail and scraper chain constitute the scraper conveyor (68). To accommodate the local undulations caused by the bottom plate trend, the front coal bunker (63) and the tail coal bunker (54) are connected by a hinge shaft (60) and can deflect by 5°; the bottom plates (57) of the two coal bunkers are connected by a circular chain (59) and have a certain amount of mobility between them; the end of the bottom plate (57) of the coal bunker near the tail coal bunker (54) is provided with an ear seat that is connected to the bottom plate traction cylinder (44) of the equipment vehicle (3).

[0016] The horizontal coal bunker (4) scraper conveyor (68) adopts variable speed operation. Its variable speed drive method can be a variable speed motor, a variable speed hydraulic motor, or a gearbox. The closing cover (65) controls the opening and closing of the coal bunker. When it rotates to the top of the bunker and is in the open position, it is the normal speed operation stage of the scraper conveyor (68). When the closing cover (65) rotates to the closed position, it closes with the scraper conveyor, prevents the coal flow from flowing out, and uses the arc of the closing cover (65) to return the coal flow. When the bunker is closed, the scraper conveyor (68) runs slowly with low speed and high torque. After the material enters the feed chamber (75), it is moved to the inside of the chamber under the guidance of the horizontal spiral blades (62). The array of horizontal spiral blades (62) arranged side by side also has the effect of stirring and crushing large pieces of material. As the material enters the coal bunker chamber (77), it surges forward under the joint drive of the scraper conveyor and the longitudinal spiral blades to increase the loading rate until the coal bunker is full.

[0017] The equipment vehicle (3) is located between the tunneling equipment (1) and the horizontal coal bunker (4), and the distance between it and the horizontal coal bunker (4) is relatively fixed, together forming a self-moving coal bunker. Figure 6 , Figure 7 As shown, the equipment mainly consists of a tracked walking mechanism, a vehicle frame (30), an electrical control box (34), a controller (35), a pump group (31), a valve group (33), an oil tank (32), a coal bunker traction cylinder (43), a bottom plate traction cylinder (44), a top support cylinder (39), a ground support cylinder (45), a folding air duct (37), a straight air duct (36), and a cable storage mechanism.

[0018] The tracked walking mechanism provides power for the equipment vehicle (3) to move itself and follows the tunneling equipment (1) according to the moving procedure of the self-moving coal bunker; the electrical control box (34) provides power control for the scraper conveyor (68), horizontal spiral blade (62), longitudinal spiral blade (64) and straddle transfer conveyor (2) of the horizontal coal bunker (4) in addition to powering the pump group (31); the controller (35) is the logic control center of the electrical and hydraulic cylinders of the entire self-moving coal bunker system; the pump group (31) and valve group (33) provide power for the cylinders of the machine in addition to powering the closing cover (65) cylinder in the horizontal coal bunker (4) and the pulling cylinder (84) of the self-extending tail (5) and other hydraulic components.

[0019] The top support cylinder (39) and the bottom support cylinder (45) are auxiliary measures to stabilize the equipment vehicle (3). When the equipment vehicle (3) pulls the horizontal coal bunker (4), they support the top and bottom plates respectively to stably supply the pulling force. The pulling cylinder is divided into two groups: the bottom plate traction cylinder (44) and the coal bunker traction cylinder (43). First, the bottom plate of the coal bunker (57) is pulled, and then the tail coal bunker (54) and the front coal bunker (63) are pulled to form a stepping movement. The top of the equipment vehicle (3) is fixed with a compressed air duct (46). The tunneling equipment (1) and the negative pressure exhaust duct (48) are connected by a folding duct (37) at one end and a straight duct (36) at the other end. When the tunneling equipment (1) and the equipment vehicle (3) separate, the folding duct gradually unfolds to ensure normal air supply and dust removal. The cable storage mechanism stores power cables, signal cables, and water pipes, and has two types: hanging folding type and cable reel type. It can provide a 5m pipeline buffer between the tunneling equipment (1) and the equipment vehicle (3). Figure 6 Cable tray (47), such as Figure 7 The cable reel device (49), water pipe reel device (50), cable storage mechanism, etc. The cable rack (47) consists of a hanging rail (38), pulley block (40), drop wheel block (41), etc., and the extension cable (42) provides a 1 to 2 m pipeline buffer between the equipment car (3) and the horizontal coal bunker (4).

[0020] When the equipment vehicle (3) moves the horizontal coal bunker (4), the bottom plate traction cylinder (44) first moves the bottom plate (57) of the coal bunker a certain distance, and then the tail coal bunker (54) and the front coal bunker (63) move the same distance, forming a stepping movement. When the bottom plate traction cylinder (44) moves, the coal bunker traction cylinder (43) remains stationary, and when the coal bunker traction cylinder (43) moves, the bottom plate traction cylinder (44) remains stationary. When the moving is finished, both remain stationary with zero displacement. In this way, the absolute distance from the horizontal coal bunker (4) can be controlled, and even when the horizontal coal bunker (4) is in a sloping position with a potential tendency to slide, the stability of the equipment vehicle (3) can be used to ensure that it will not slide on its own. The action of the coal bunker traction cylinder (43) is closely related to the pull cylinder (84). When the coal bunker traction cylinder (43) pulls the horizontal coal bunker (4), the pull cylinder (84) must extend and the displacement of the two must be synchronized to ensure that the movement of the horizontal coal bunker (4) will not affect the safe operation of the self-extending tail (5).

[0021] The straddle-mounted transfer conveyor (2) is as follows Figure 5As shown, its tail is flexibly connected to the end of the tunneling equipment (1) and is located in a relatively fixed position below the head of the scraper conveyor, and moves forward and backward with the tunneling equipment (1); the head of the straddle transfer conveyor (2) is connected above the feed inlet (76) of the tail coal bunker (54), and can be connected for 5m along the feed guide rail (55) by means of the support wheel set (21). The straddle transfer conveyor (2) has a low roller set (19) and a high roller set (20) arranged below the rising section of the transfer frame (18) as the main rolling support components. The telescopic straddle section support (27) arranged at the turning point of the transfer frame (18) is composed of multiple sets of small wheels (23), slippers (24), tie rods (25), support frames (26), etc., to provide support when the straddle section is suspended. One end of the straddle section support (27) is fixed to the turning point of the transfer frame (18), and the other end is fixed to the tail compartment (53). The small wheels (23) on it roll in the frame slide groove (22) of the transfer frame (18), and its sliding shoe (24) slides on the ground. The tie rod (25) forms a parallelogram structure, so that the straddle section support (27) automatically unfolds as the distance between the tunneling equipment (1) and the self-moving coal bunker increases, thereby realizing real-time support for the straddle section; conversely, as the distance between the self-moving coal bunker and the tunneling equipment (1) decreases, the straddle section support (27) automatically retracts.

[0022] The telescopic belt conveyor self-extending tail section (5) is part of the telescopic belt conveyor and is arranged in a line with the equipment vehicle (3) and the horizontal coal bunker (4). The unloading end of the horizontal coal bunker (4), i.e., the head section (70) of the scraper conveyor, overlaps on the guide rail (81) of the tail frame (80) of the telescopic belt conveyor self-extending tail section (5), with an overlap distance of more than 5m. Figure 2 As shown, the self-extending tail (5) is supported and moved by a roller assembly (83) below it. Two long-stroke pulling cylinders (84) are fixed on the tail frame (80) with fixing clips (85), and the other end is fixed to the lower part of the head compartment (69). Under the action of the pulling cylinders (84), the self-extending tail (5) supported by the roller assembly (83) moves back and forth, driving the extension of the telescopic belt conveyor. The longest single pulling distance of the self-extending tail (5) is 5m. The self-extending idler frame (82) arranged below the self-extending tail (5) is as follows: Figure 3 As shown, the roller assembly (83), telescopic frame (14), and roller frame assembly (10) are arranged in a staggered manner. During the extension process, the rolling wheels and the sliding shoes (15) work together to increase the passability and stability. The upper roller (12) and lower roller (13) on it continuously support the operation of the conveyor belt during the unfolding process. The drive wheel assembly (9) and the driver are used by maintenance personnel to operate the telescopic belt conveyor when adding intermediate frames and to drive the self-extending roller frame (82) to retract.

[0023] The basic unit telescopic frame (14) of the self-extending idler frame (82) consists of an upper idler (12), a lower idler (13), a horizontal bar, a vertical bar, a bottom slipper (15), and a diagonal tie rod group (11) with the center fixed to the vertical bar or the horizontal bar. Every 7 telescopic frames (14) are equipped with 1 set of idler frame wheels (10) to form a telescopic frame wheel group (16) that can be extended to a distance of 6.2m and folded to 0.93m. Such 10 sets are combined to form a telescopic frame group that can be extended to 50m. The roller assembly (83) is connected to the first telescopic frame (14) by a connecting chain (86). The subsequent telescopic frames (14) are connected in sequence by multiple parallelogram structures formed by the end-to-end hinge of the diagonal tie rod assembly (11). The roller frame assembly (10) at the end is connected to the drive wheel assembly (9) and the driver and is fixed on the intermediate frame of the telescopic belt conveyor that has been installed and fixed. The driver contains a gearbox and drives the drive wheel assembly (9). The drive is achieved by maintenance personnel using tools such as a crank or a coal drill. The form of the diagonal tie rod assembly (11) fixed on the outside of the vertical support has better stability. The form of fixing it inside the horizontal support is as follows: Figure 4 The telescopic frame (14) shown is suitable for shorter telescopic frames. The telescopic frame (14) is based on the principle and structure of telescopic gates. Due to the complex conditions of the floor slab in the roadway, the inclined tie rod group (11) is fixed on the outside of the upright, the roller frame group wheel (10) and the bottom slip shoe (15) are placed on the ground at the same time, and the inherent contact characteristics of the roller and the belt are utilized to increase the straightness of the self-extending roller frame (82), the passability and reliability. At the same time, the relatively flat roadway floor after the coal bunker floor slab (57) passes through is also conducive to its operation.

[0024] The method for coordinating the operation of various equipment in the self-moving coal bunker's supporting system every 50m, 5m, and 1m work cycles is as follows:

[0025] The 1m operation cycle is based on the basic management unit of tunneling and support in tunneling engineering, which is 1m. It revolves around the basic functions of the horizontal coal bunker (4) to ensure the continuity and integrity of tunneling, support, and extension of the telescopic belt conveyor in the basic operation cycle. The working state of the horizontal coal bunker (4) is divided into two types: as a conveyor and as a coal storage equipment. When it is running as a coal storage equipment, the horizontal coal bunker (4) does not move, but the tunneling equipment (1), the straddle transfer conveyor (2), and the extension tail of the telescopic belt conveyor (5) can all be in their respective operating rhythms. Therefore, when the tunneling operation of the working face is running normally, the 1m operation cycle provides an opportunity for the extension of the tail of the telescopic belt conveyor after the unloaded operation of the tail extension (5) during the coal storage operation stage of the horizontal coal bunker (4); when the tunneling operation of the working face is not running normally, that is, when the equipment after the horizontal coal bunker (4) is not scheduled to stop, the 1m operation cycle provides an opportunity for the tunneling equipment (1), the straddle transfer conveyor (2) and the equipment vehicle (3) to complete their respective stage operations during the coal storage operation stage of the horizontal coal bunker (4), especially the tunneling operation and support operation stages, reducing half-finished projects and providing technical guarantees for the safety of the working face and the continuity of operations.

[0026] The 5m operation cycle is an operation procedure set up around the performance of the existing tunneling equipment (1), support equipment, and horizontal coal bunker (4), namely the "overlapping movement distance of 0-5m" and the "no-load" requirement for the safe extension of the tail of the telescopic belt conveyor. It is the main link of the regular operation of the self-moving coal bunker. The key is to complete the safe extension of the self-extending tail (5) and continue to operate without stopping the tunneling operation. The "horizontal coal bunker (4) storage operation" of the 1m operation cycle is embedded in each 5m operation cycle. It is the key to achieve a smooth connection between the continuous operation of this 5m operation cycle and the next 5m operation cycle, as follows:

[0027] Initial state: the tunneling equipment (1) is in the tunneling preparation state, the unloading end of the straddle transfer conveyor (2) is 1.5m above the feed guide rail (55), the equipment vehicle (3) is in the state of preparing to pull the horizontal coal bunker (4), the horizontal coal bunker (4) is in the state of the conveyor running, the self-extending tail (5) is 5m above the scraper conveyor head section (70), and the pulling cylinder (84) is in the state of fully retracted to 0m.

[0028] Tunneling equipment (1) continuously tunnels 0-4m: straddle conveyor (2) runs and follows tunneling equipment (1) forward, unloading end is near the feed guide rail (55) overlap 1.5m and slides back and forth, horizontal coal bunker (4) is in conveyor state and runs from the extension tail (5) to the scraper conveyor head section (70) overlap 5-0m, equipment vehicle (3) follows the tunneling speed and steps to pull horizontal coal bunker (4) forward from 0-4m and then accelerates to 5m, synchronously, the pulling cylinder (84) is in the extension state from 0-4-5m and the displacement and running rhythm are coordinated with the pulling of coal bunker traction cylinder (43);

[0029] The tunneling equipment (1) continues to tunnel for 4-4.5m and embeds 1m in the work cycle: the straddle transfer conveyor (2) runs and follows the tunneling equipment (1) forward, the unloading end slides at the 1m overlap of the feed guide rail (55), the equipment vehicle (3) no longer follows the tunneling equipment (1) forward and pulls the horizontal coal bunker (4), the horizontal coal bunker (4) is in the state of switching from the conveyor to the storage equipment, the self-extending tail (5) is at the 0m overlap of the scraper conveyor head section (70), the pulling cylinder (84) is in the state of extending 5m, and the self-extending idler frame (82) has not been deployed, the telescopic belt conveyor gradually runs empty;

[0030] The tunneling equipment (1) continues to tunnel to 4.5-5m: the straddle transfer conveyor (2) runs and follows the tunneling equipment (1) forward, the unloading end is near the 0.5-0m overlap end of the feed guide rail (55), the straddle section support (27) is fully deployed, the equipment vehicle (3) and the horizontal coal bunker (4) are in a moving and stationary state, the horizontal coal bunker (4) is in the storage equipment running and gradually full, after being pulled from the tail of the extension machine (5), it is at the head section (70) of the scraper conveyor with an overlap of 0-5m, the pulling cylinder (84) retracts from the 5-0m state, and gradually unfolds from the extension roller frame (82) to 0-5m, the telescopic belt conveyor runs idle and extends 0-5m;

[0031] The tunneling equipment (1) continues to tunnel and enters a new cycle: the straddle conveyor (2) runs and follows the tunneling equipment (1) forward, the unloading end is at the horizontal coal bunker (4) and the feed guide rail (55) slides near the overlap of 0-1m, the equipment vehicle (3) follows the tunneling equipment (1) forward again and pulls the horizontal coal bunker (4), the horizontal coal bunker (4) resumes the operation of the conveyor and unloads, stops moving from the extension tail (5) at the overlap of 5m, the pull cylinder (84) retracts to 0m, and the telescopic belt conveyor operates under load.

[0032] The 50m work cycle is a regular cycle of production, maintenance, and repair around the tunneling face. It is determined based on the storage length of the telescopic belt conveyor being 100m, which satisfies the requirement of 50m extension. After the continuously operating face equipment completes several 5m work cycles, and the storage bin is filled with new belt, the predetermined 5m×10 work target is achieved. The tunneling face then stops tunneling according to the plan and enters the maintenance phase, where the ventilation, water, electricity, communications, and transportation are all improved to prepare for the start of the next 50m work cycle. In this phase, in addition to the maintenance of the storage belt, the telescopic belt conveyor also needs to retract the telescopic frame group (82) and complete the work of replenishing the intermediate frames such as idlers, H-frames, and longitudinal beams. The replenishment work of other links is not involved here.

[0033] Tunneling equipment (1) withdrawal: During the 5m operation cycle, the straddle transfer conveyor (2) always runs and follows the tunneling equipment (1) forward. The unloading end slides near the overlap of the feed guide rail (55) of the horizontal coal bunker (4) at 0m or 1.5m. During the maintenance and repair phase of the 50m operation cycle, when the tunneling equipment (1) needs to withdraw, the straddle transfer conveyor (2) can follow the tunneling equipment (1) backward and make the unloading end near the overlap of the feed guide rail (55) of the horizontal coal bunker (4) at 5m, which is convenient for the maintenance of the tunneling equipment (1) cutting mechanism, etc.

[0034] Beneficial effects: Compared with the aforementioned prior art methods, equipment, and systems, this invention patent has the following beneficial effects:

[0035] Compared to the system described in "Rapid Tunneling Support", the self-moving coal bunker support system does not have a specific crushing equipment. The reason is that the cutting characteristics of the tunneling equipment (1) which is preferentially configured as an integrated tunneling, support and anchor machine are stable and continuous, and the probability of producing large pieces is very small. The reason is that the large pieces of material will be crushed between the several horizontal spiral blades (62) below the feed inlet (76) of the horizontal coal bunker (4). The 5m operation cycle and the nested 1m operation cycle can basically realize 50m continuous tunneling operation, which greatly shortens the intermittent transportation time, reduces the auxiliary operation time such as pulling and moving the tail of the telescopic belt conveyor, increases the single operation cycle advance, and improves the efficiency of roadway tunneling.

[0036] Compared to the coal transport system following the tunneling face described in "Development of Horizontal Mechanical Coal Bunker for Tunneling Face", the self-moving coal bunker and its supporting system are arranged behind the tunneling equipment (1), focusing more on solving problems related to tunneling operations and face management.

[0037] Compared to the efficient and rapid tunneling equipment system introduced in "Research Status and Development Trends of Coal Mine Tunneling Technology", which consists of a tunneling and anchoring integrated machine, an anchor bolt transfer machine, a straddle-type anchor bolt drilling rig, and a flexible continuous transportation system, the tunneling equipment (1) prioritizes the tunneling, support and anchoring integrated machine, which has tunneling and all anchor bolt support functions, resulting in a reduction in the number of equipment in the entire system. The total length of the complete set of equipment is within about 50m, and the supporting equipment is arranged on one side of the roadway, which is more convenient for the management of the tunneling face and the realization of mechanization and automation.

[0038] Compared to the Baidu Encyclopedia entry on "Extendable Belt Conveyor", which describes the telescopic belt conveyor as connecting intermediate frames such as idlers, H-frames and longitudinal beams according to the extension length, the self-extending tail (5) of the supporting system after the coal bunker is designed improves the mechanization, automation and continuous operation of the telescopic belt conveyor extension, laying the technical foundation for realizing a 50m operation cycle. Attached Figure Description

[0039] Figure 1 Top view of the overall layout of the supporting systems after the coal transfer bunker;

[0040] Figure 2 Schematic diagram of a telescopic belt conveyor with an extended tail section;

[0041] Figure 3 Retractable diagram of the self-extending roller bracket;

[0042] Figure 4 Developed diagram of the roller frame assembly's horizontal and oblique tie rods;

[0043] Figure 5 Schematic diagram of a straddle-mounted transfer conveyor;

[0044] Figure 6 Schematic diagram of equipment vehicle 1;

[0045] Figure 7 Schematic diagram of equipment vehicle 2;

[0046] Figure 8 Schematic diagram of a horizontal coal bunker (69 items hidden).

[0047] The attached figure includes the following list of reference numerals:

[0048] (1) Tunneling equipment, (2) Straddle conveyor, (3) Equipment vehicle, (4) Horizontal coal bunker, (5) Self-extending tail section, (6) Tunneling support vehicle, (7) Anchor bolt vehicle, (8) Dust removal fan, (9) Drive wheel set, (10) Idler frame wheel set, (11) Diagonal tie rod set, (12) Upper idler roller, (13) Lower idler roller, (14) Telescopic frame, (15) Bottom slipper, (16) Telescopic frame wheel set, (18) Transfer frame, (19) Low idler roller set, (20) High idler roller set, (21) Wheel set, (22), chute, (23), small wheel, (24), skid, (25), tie rod, (26), support frame, (27), straddle section support, (30), equipment frame, (31), pump set, (32), oil tank, (33), valve set, (34), electrical control box, (35), controller, (36), straight ventilation duct, (37), folding ventilation duct, (38), hanging rail, (39), jacking cylinder, (40), pulley block, (41), drop wheel block, (42), extension cable, (43), coal bunker traction cylinder, (44) ), bottom plate traction cylinder, (45) ground support cylinder, (46) compressed air duct, (47) cable rack, (48) exhaust duct, (49) cable winding device, (50) water pipe winding device, (53) tail compartment, (54) tail coal bunker, (55) feed guide rail, (56) three-ring chain, (57) coal bunker bottom plate, (58) wheelset, (59) circular chain, (60) hinge shaft, (62) horizontal spiral blade, (63) front coal bunker, (64) longitudinal spiral blade, (65) bunker hood, (66) , (67) Closing shaft, (68) Rail, (69) Scraper conveyor, (70) Head compartment (hidden shell), (71) Scraper conveyor head section, (72) Support wheel, (73) Lifting support wheel, (74) Lifting cylinder, (75) Crossbeam, (76) Feed compartment, (77) Feed inlet, (80) Coal bunker, (81) Tail frame, (82) Guide rail, (83) Self-extending idler frame, (84) Roller assembly, (85) Pulling cylinder, (86) Fixing clip, (87) Connecting chain Detailed Implementation

[0049] The coal roadway rapid excavation self-moving coal bunker supporting system designed in this invention is as follows: Figure 1As shown, the preferred tunneling equipment (4) is the tunneling and anchoring integrated machine of the patent number ZL 2019 1 0186436.7, which is described as "a coal mine tunneling, anchoring and parallel operation method". The machine consists of two main parts: a tunneling and anchoring vehicle and an anchoring vehicle. The total length is about 13m. According to the overall goal of 3000m / month of coal roadway tunneling, the rated daily advance is 100m. The tunneling and anchoring vehicle has a cutting section of 4m high × 5m wide and a rated cutting advance of 3 mm / s. The anchoring vehicle is equipped with all the anchoring machines required for the cutting section and completes all anchoring operations in sequence. It belongs to the type of steady speed advance and continuous operation.

[0050] The horizontal coal bunker (4) and the equipment vehicle (3) together constitute the core of the self-moving coal bunker. The scraper conveyor (68) of the horizontal coal bunker (4) has a trough width of 1000mm, a tail wheel diameter of 300mm, and a scraper conveyor head section (70) length of 6000mm. It is arranged at the bottom of each compartment. Along the bottom of the scraper conveyor (68), there are wheelsets (58) with a spacing of 1500mm and a diameter of 400mm that roll on the rails (76). The compartment volume is about 35m³. 3 Each section of the coal bunker (77) is 1.8m high × 1.9m wide × 5m long, totaling 17.1m. 3 The horizontal spiral blade (62) guiding the coal flow has a diameter of 400mm and a pitch of 300mm, and the vertical spiral blade (64) has a diameter of 800mm and a pitch of 400mm; the hood (65) has a radius of 500mm and a length of 1900mm; the feed inlet (76) of the feed chamber (75) is 1300mm wide × 6000mm long, the feed guide rail (55) is 6000mm long, the distance between the two guide rails is 1000mm wide, and the feed inlet (76) protrudes 900mm toward the center line of the roadway to facilitate connection with the straddle-mounted transfer conveyor (2). The coal bunker bottom plate (57) is 1900mm wide and has a bow-shaped edge for easy sliding. It is adapted to the bottom plate of the front coal bunker (63) with a length of 8500mm, the bottom plate of the tail coal bunker (54) with a length of 6000mm, and the bottom plate of the single coal bunker body (77) with a length of 5000mm. Two steel rails (76) are welded to the bottom plate (57) along the length direction with a spacing of 1200mm, which is compatible with the 400mm diameter wheelset (58). This design makes the movement of each compartment and the bottom plate roll. Although the bottom plate of the coal bunker (57) and the roadway bottom plate slide, the rolling relationship of the former makes the movement of the horizontal coal bunker (4) change from sliding to rolling, which reduces the pulling force and lowers the ground pressure.

[0051] The scraper conveyor (68) of the horizontal coal bunker (4) adopts variable speed operation. During normal operation, the chain speed is 0.93m / s and during the closing stage, the chain speed is 0.01m / s. To adapt to the changes in the bottom plate trend, the front coal bunker (63) and the tail coal bunker (54) are connected by a hinge shaft (60) and can deflect by 5°. The bottom plates (57) of the two coal bunkers are connected by a circular chain (59) and have a certain amount of mobility between them.

[0052] The equipment vehicle (3) has an external dimension of approximately 2500mm long × 1500mm wide × 3700mm high. The walking mechanism is a tracked type with a length of 2000mm × 1500mm wide × 500mm high. It provides walking power to the pump station consisting of pump group (31), valve group (33), and oil tank (32), provides traction power to the coal bunker traction cylinder (43) with a diameter of 100mm × a length of 1000mm and the bottom plate traction cylinder (44), provides anchoring power to the top support cylinder (39) with a diameter of 200mm × a length of 400mm and the ground support cylinder (45), and also provides power to the hydraulic components such as the cylinder that rotates around the closing shaft (66) of the closing cover (65) in the horizontal coal bunker (4) and the pulling cylinder (84) that moves from the extension tail (5) of the telescopic belt conveyor. The wind, water, electricity and communication system buffer consists of a folded air duct (37), a straight air duct (36) and a cable storage mechanism, etc. The air supply and dust removal are both made of folded air duct (37) and straight air duct (36) with a diameter of 600mm.

[0053] The straddle-type transfer conveyor (2) is 1000mm wide, 2000mm high, 800mm wide, and approximately 10m long. The inclined section has an inclination angle of 30° and a length of 3600mm, while the straddle section is 6500mm long and supported by a 200mm wheel set (21). The maximum travel distance along the feed guide rail (55) is 5m. The low-profile roller set (19) and high-profile roller set (20) arranged below the rising section of the transfer frame (18) of the straddle-type transfer conveyor (2) are equipped with 600mm diameter metal rollers and are the main moving support components. The telescopic straddle support (27) arranged at the turning point of the transfer frame (18) is 1700mm high. Its small wheel (23) with a diameter of 150mm rolls in the frame slide groove (22) of the transfer frame (18). Its sliding shoe (24) is a U-shaped steel with a length of 1040mm, a width of 100mm, and a height of 60mm, and slides on the ground. The uprights, crossbars and the sliding shoe (24) fixed at the bottom of the support frame (26) are all made of U-shaped steel, and the small wheel (23) is fixed at the top of the upright. The center connection point of two tie rods (25) is fixed at the midpoint of the outer plane of the upright. Each tie rod (25) with a length of 1900mm, a width of 30mm, and a thickness of 10mm is connected end to end to form a parallelogram, which can be extended and retracted freely. As the distance between the tunneling equipment (1) and the self-moving coal bunker increases, the straddle section support (27) automatically opens to provide real-time support at the turning point of the transfer frame (18) and the pull of the three-ring chain (56) of the tail compartment (53), the spacing between each support frame (26) increases, and the tie rod (25) changes from being upright to being flat; conversely, as the distance between the self-moving coal bunker and the tunneling equipment (1) decreases, the straddle section support (27) automatically closes.

[0054] The self-extending tail section (5) is part of the telescopic belt conveyor. The head section (70) of the scraper conveyor overlaps the tail frame (80) of the self-extending tail section (5) with an overlap distance of more than 5m. The tail frame (80) of the self-extending tail section (5) is about 1100mm above the bottom plate. The guide rail (81) arranged on it is 5500mm long × 110mm wide × 50mm high, which supports the rolling of the support wheel (71). A set of 400mm diameter support rollers (9) are fixed below the tail frame (80) to support the rolling. Two 200mm diameter × 5500mm stroke hydraulic cylinders (84) are fixed on them with fixing clips (85). The other end is fixed to the lower part of the head compartment (69). The maximum pulling distance of the self-extending tail section (5) is 5m at a time.

[0055] The basic unit telescopic frame (14) of the self-extending idler frame (82) consists of an upper idler (12) and a lower idler (13) with a diameter of 90 mm for belt operation, and a frame with a length of 900 mm × width of 90 mm × height of 1000 mm and a bottom slipper (15) with a length of 900 mm × width of 90 mm × height of 30 mm. The telescopic frame (14) drives the upper idler (12) and the lower idler (13) to move and continuously support the belt operation. Every 7 sets of telescopic frames (14) are equipped with 1 set of idler frame wheels (10) to form a telescopic frame wheel set (16) with an unfolded distance of 6.2 m and a folded distance of 0.93 m. Such 10 sets are combined to form a telescopic frame set that can be unfolded to 50 m. The diagonal brace set (11) consists of diagonal braces with a length of 900 mm × width of 40 mm × thickness of 20 mm. The form of fixing it to the outside of the upright has good stability and is conducive to the passability and reliability of the self-extending idler frame (82). The drive wheel assembly (9) is equipped with a power box with a height of 800×300×width, gear transmission, and mounted on the drive wheel.

[0056] Horizontal coal bunker (4) movement: First, lock the coal bunker traction cylinder (43) to keep it stationary, and fix the front coal bunker (63) and tail coal bunker (54). Then, pull the bottom plate of the coal bunker (57) 0.5m away by the bottom plate traction cylinder (44). After it is in place, lock the bottom plate traction cylinder (44) to keep it stationary, and fix the bottom plate of the coal bunker (57). Then, pull the tail coal bunker (54) and the front coal bunker (63) 0.5m away by the coal bunker traction cylinder (43). At the same time, the pulling cylinder (84) also extends 0.5m and is synchronized with the displacement of the coal bunker traction cylinder (43) in real time, completing the horizontal coal bunker (4) stepping 0.5m. After it is in place, lock both the coal bunker traction cylinder (43) and the pulling cylinder (84) to ensure that the overall position of the horizontal coal bunker (4) is fixed and the self-extending tail (5) is safely operated. Then, start the next movement rhythm.

[0057] 1m operation cycle: When the hood (65) is open, the scraper conveyor (68) is running at normal speed, and the horizontal coal bunker (4) is operating as a conveyor; when the hood (65) is closed, the scraper conveyor (68) is running at slow speed, and the horizontal coal bunker (4) is operating as a coal storage device. When operating as a coal storage device, neither the horizontal coal bunker (4) nor the equipment vehicle (3) moves or moves relative to each other; the tunneling equipment (1), the straddle transfer conveyor (2), and the telescopic belt conveyor extend from their respective tail ends (5) at their own operating rhythms.

[0058] The 5m work cycle consists of several stages: initial state, 0-4m tunneling, 4-4.5m tunneling, 4.5-5m tunneling, and the start of a new cycle.

[0059] Status list after setting the critical running nodes to the following names:

[0060] The position of the unloading end of the straddle conveyor (2) overlapping the feed guide rail (55) is set as "feed port overlap";

[0061] The equipment vehicle (3) is in the state of pulling the horizontal coal bunker (4), and is set to the state of "equipment (3)";

[0062] The working status of the horizontal coal bunker (4) is set to "coal bunker (4) status";

[0063] The position of the extension tail (5) overlapping the head section (70) of the scraper conveyor is set as "discharge port overlap";

[0064] The working state of the pull cylinder (84) is set to "cylinder (84)".

[0065] Specifically as follows:

[0066] Inlet overlap Equipment (3) Status Coal bunker (4) status Outlet overlap Hydraulic cylinder (84) initial state Overlap 1.5m Preparing to move Conveyor operation 5m overlap Shrink to 0m 0-4m tunneling Overlap 1.5m 0～4～5m Conveyor operation 5-0m 0～4～5m 4-4.5m tunneling 1m overlap Stop pulling Switch running status 0m overlap Extended to 5m 4.5-5m tunneling 0.5-0m Moving and stationary Coal storage equipment operation Erect at 0-5m Shrinkage 5-0m A new cycle begins. Overlap 0-1m Start pulling Conveyor operation 5m overlap Shrink to 0m

[0067] A 50m work cycle is when the continuously operating working face equipment completes several 5m work cycles and reaches the point where the conveyor belt is replaced with a new one in the storage bin, the tunneling face stops tunneling according to a predetermined plan and enters the maintenance phase. This phase involves perfecting all aspects such as ventilation, water, electricity, communications, and transportation to prepare for the start of the next 50m work cycle.

[0068] Tunneling equipment (1) withdrawal: During the 5m operation cycle, the straddle transfer conveyor (2) always runs and follows the tunneling equipment (1) forward. The unloading end is at the horizontal coal bunker (4) feed guide rail (55) overlap 0m or 1.5m and slides. During the maintenance and repair phase of the 50m operation cycle, when the tunneling equipment (1) needs to withdraw, the straddle transfer conveyor (2) can follow the tunneling equipment (1) backward and make the unloading end at the horizontal coal bunker (4) feed guide rail (55) overlap 5m, which is convenient for the tunneling equipment (1) cutting mechanism to be repaired.

Claims

1. A coal roadway rapid excavation self-moving coal bunker rear supporting system, the coal roadway rapid excavation self-moving coal bunker rear supporting system mainly consists of a horizontal coal bunker (4), an equipment vehicle (3), a straddle-mounted transfer conveyor (2) and a telescopic belt conveyor self-extending tail section (5); the horizontal coal bunker (4) and the equipment vehicle (3) are combined to form a self-moving coal bunker; The horizontal coal bunker (4) is mainly composed of a scraper conveyor (68), a front coal bunker (63), a tail coal bunker (54), and a coal bunker floor plate (57). The front coal bunker is composed of a machine head compartment (69), a closing cover (65), a coal bunker body (77), longitudinal spiral blades (64), and wheelsets (58). The tail coal bunker (54) is composed of a machine tail compartment (53), a feeding compartment (75), transverse spiral blades (62), and wheelsets (58). The coal bunker floor plate (57) is composed of rails (67) and a floor plate, which together complete the transportation, storage of materials, and connection between equipment. The equipment vehicle (3) is mainly composed of a tracked vehicle frame (30), an electrical control box (34), a controller (35), a pump group (31), a valve group (33), an oil tank (32), a coal bunker traction cylinder (43), a bottom plate traction cylinder (44), a top support cylinder (39), a ground support cylinder (45), a folding ventilation duct (37), a straight ventilation duct (36), and a cable storage mechanism, which provide power for its own movement, the self-movement of the horizontal coal bunker (4), and its internal hydraulic and electrical equipment; The straddle-mounted transfer conveyor (2) is mainly composed of a transfer frame (18), a low idler roller group (19), a high idler roller group (20), a wheel group (21), a chute (22), small wheels (23), a slipper (24), a tie rod (25), a support frame (26), and a straddle section support (27). It follows the tunneling equipment (1) in real time to move forward and backward and realize the transfer of materials. The self-extending tail section (5) of the telescopic belt conveyor is mainly composed of a tail frame (80), guide rail (81), self-extending idler frame (82), idler roller group (83), pull-shift cylinder (84), fixing clip (85), connecting chain (86), upper idler roller (12), lower idler roller (13), telescopic frame (14), bottom slipper (15), inclined tie rod group (11), idler frame group wheel (10), drive wheel group (9), and telescopic frame wheel group (16), realizing the self-extending tail section (5) of the telescopic belt conveyor can extend autonomously within a distance of 5m×10 and the conveyor can operate normally.

2. The supporting system for rapid coal roadway excavation and self-moving coal bunkers according to claim 1, characterized in that: The tail of the straddle conveyor (2) is connected to a relatively fixed position below the head of the scraper conveyor of the tunneling equipment (1); the feed inlet (76) is on the same line as the tail of the scraper conveyor of the tunneling equipment (1) and is located in the middle of the roadway; the self-moving coal bunker follows behind the tunneling equipment (1), is located on one side of the roadway and is on the same line as the telescopic belt conveyor, and the distance between the equipment vehicle (3) and the horizontal coal bunker (4) is relatively fixed; the unloading end of the self-moving coal bunker, the head section (70) of the scraper conveyor and the self-extending tail (5) of the telescopic belt conveyor are on the same line, so that the supporting equipment is concentrated on one side of the roadway and the length is greatly shortened, providing a channel for the rapid transport of materials required for tunneling to the tunneling equipment (1). The head of the straddle-type transfer conveyor (2) moves 0-5m along the feed guide rail (55) by means of the support wheel set (21); the straddle section support (27) provides support for the straddle suspended section. One end of it is fixed at the turning point of the transfer frame (18), and the other end is fixed at the tail compartment (53). The small wheels (23) roll in the chute (22) of the transfer frame (18), and the sliding shoes (24) slide on the ground. As the distance between the tunneling equipment (1) and the self-moving coal bunker increases, the straddle section support (27) unfolds to provide real-time support for the straddle section; conversely, as the self-moving coal bunker moves and the distance between it and the tunneling equipment (1) decreases, the straddle section support (27) retracts. The support wheel (71) arranged below the head section (70) of the scraper conveyor rolls on the guide rail (81) arranged on the tail frame (80) for a distance of 0-5m. The lower fixed crossbeam (74) is equipped with a lifting cylinder (73) to dynamically control the lifting support wheel (72) rolling on the ground below, so that the supporting force of the lifting support wheel (72) on the bottom plate is balanced and slightly less than the supporting force of the support wheel (71). The two complement each other to achieve full span support of the head section (70) of the scraper conveyor.

3. The supporting system for rapid coal roadway excavation and self-moving coal bunkers according to claim 1, characterized in that: The scraper conveyor (68) runs through the bottom of the bin with variable speed operation; the feed inlet (76) of the tail coal bin (54) is equipped with a feed guide rail (55) for the head section and the straddle section of the crossover transfer conveyor (2) to connect and travel; the transverse spiral blades (62) inside the feed bin (75) have the function of guiding the material into the bin and agitating and crushing large pieces; the longitudinal spiral blades (64) inside the coal bin (77) push the material above the bin forward to increase the loading rate; the front coal bin (63) is equipped with relevant bin covers (65) to control the opening and closing of the coal bin; the head section of the scraper conveyor (70) Overlapping distance of more than 5m on the tail frame (80) of the self-extending tail (5); the coal bunker bottom plate (57) is composed of steel rails (67) and bottom plate, and rolls with the array of wheelsets (58) distributed at the bottom of the scraper conveyor (68), which reduces both the ground pressure and the moving force; in order to adapt to the local undulations due to the trend of the bottom plate, the front coal bunker (63) and the tail coal bunker (54) are connected by a hinge shaft (60), with a 5° deflection between them, and the bottom plates (57) of the two coal bunkers are connected by a circular chain (59), with a certain amount of mobility between them. The horizontal coal bunker (4) is the shortest structure and can increase the coal bunker body (77) and coal bunker bottom plate (57) to achieve the required storage volume. When the hood (65) of the horizontal coal bunker (4) is open and the scraper conveyor (68) is running at normal speed, the horizontal coal bunker (4) only operates as a conveyor. When the hood (65) is closed and the scraper conveyor (68) is running at slow speed, the horizontal coal bunker (4) operates as a storage device. At this time, the self-moving coal bunker does not move and the tunneling equipment (1), the straddle transfer conveyor (2) and the telescopic belt conveyor are allowed to operate at their respective operating rhythms from the extended tail (5).

4. The supporting system for rapid coal roadway excavation and self-moving coal bunkers according to claim 1, characterized in that: The horizontal coal bunker (4) moves on its own. Following the movement procedure of the self-moving coal bunker, it moves along with the tunneling equipment (1); the top support cylinder (39) and the ground support cylinder (45) play the role of stabilizing the equipment vehicle (3). When the equipment vehicle (3) pulls the horizontal coal bunker (4), it supports the top and bottom plates respectively, so as to stably supply the pulling force. When pulling, the bottom plate traction cylinder (44) first pulls the bottom plate (57) of the coal bunker to move a certain distance, and then the coal bunker traction cylinder (43) pulls the tail coal bunker (54) and the front coal bunker (63) to move the same distance to form a stepping movement; the bottom plate traction cylinder (44) pulls the tail coal bunker (54) and the front coal bunker (63) to move the same distance. When the oil cylinder (44) pulls, the coal bunker traction cylinder (43) remains stationary. When the coal bunker traction cylinder (43) pulls, the bottom plate traction cylinder (44) remains stationary. When both are stationary, their displacements are kept to zero, and the absolute distance from the horizontal coal bunker (4) is guaranteed to prevent them from sliding on their own. The action of the coal bunker traction cylinder (43) is closely related to the pulling cylinder (84). When the coal bunker traction cylinder (43) pulls the horizontal coal bunker (4), the pulling cylinder (84) must extend and the displacements of the two must be synchronized.

5. The supporting system for rapid coal roadway excavation and self-moving coal bunkers according to claim 1, characterized in that: The length of wind, water, electricity, and telecommunications pipelines automatically adapts to the equipment. The compressed air duct (46) and negative pressure exhaust duct (48) fixed on the top of the equipment vehicle (3) are folded air duct (37) at one end facing the tunneling equipment (1) and straight air duct (36) at the other end. When the tunneling equipment (1) and the equipment vehicle (3) separate, the folded air duct gradually unfolds to ensure normal air supply and dust removal. The cable storage mechanism stores power cables, signal cables and water pipes. The cable rack (47) composed of the hanging rail (38), pulley block (40) and drop wheel block (41) and the cable winding device (49) and water pipe winding device (50) can provide a pipeline buffer of more than 5m between the tunneling equipment (1) and the equipment vehicle (3).

6. The supporting system for rapid coal roadway excavation and self-moving coal bunkers according to claim 1, characterized in that: The telescopic belt conveyor extends in real time from its own tail (5). Two long-stroke pull-shift cylinders (84) are fixed at one end to the lower part of the head compartment (69) and at the other end to the tail frame (80). Under the action of the pull-shift cylinders (84), the self-extending tail (5) supported by the roller group (83) moves back and forth, driving the pull-shift telescopic belt conveyor to extend. The maximum pull distance is 5m. The self-extending idler frame (82) arranged below the self-extending tail (5) is composed of the roller group (83), the telescopic frame (14) and the idler frame group wheel (10) in a staggered arrangement. During the extension process, the rolling wheel and the bottom slip shoe (15) slide together to increase the passability and stability. The upper idler (12) and lower idler (13) arranged on the self-extending idler frame (82) continuously support the belt during the unfolding process. The drive wheel assembly (9) and driver are used by maintenance personnel to operate and drive the retractable self-extending idler frame (82) during the process of adding intermediate frames to the telescopic belt conveyor. The self-extending idler frame (82) consists of an upper idler (12), a lower idler (13), a horizontal bar, a vertical bar, a bottom slipper (15), and a diagonal brace group (11) fixed in the center to the vertical bar or horizontal bar. Every 7 groups of telescopic frames (14) are equipped with 1 group of idler frame wheels (10) to form a telescopic frame wheel group (16) that can be extended to a distance of 6.2m and folded to 0.93m. 10 such groups are combined to form a telescopic frame group that can be extended to 50m; the idler wheel group (8 3) Connect the first telescopic frame (14) with the connecting chain (86), and the subsequent telescopic frames (14) are connected in sequence with the head and tail hinged by the diagonal tie rod group (11) to form multiple parallelogram structures. The roller frame group wheel (10) at the tail end is connected to the drive wheel group (9) and the driver, and fixed on the fixed intermediate frame of the telescopic belt conveyor. The diagonal tie rod group (11) has two forms: fixed on the outside of the column and fixed in the crossbar. The form in the crossbar is suitable for the shorter telescopic frame (14).

7. A method for implementing a supporting system for a self-moving coal bunker in a coal roadway, characterized in that, The implementation method employs the coal roadway rapid excavation self-moving coal bunker support system as described in any one of claims 1 to 6, with multiple work cycles operating in coordination and machine withdrawal, as follows: Step 1, 1m operation cycle: The hood (65) is open, the scraper conveyor (68) is running at normal speed, and the horizontal coal bunker (4) is running as a conveyor; the hood (65) is closed, the scraper conveyor (68) is running at slow speed, and the horizontal coal bunker (4) is running as a coal storage device. When running as a coal storage device, neither the horizontal coal bunker (4) nor the equipment vehicle (3) moves or moves relative to each other; the tunneling equipment (1), the straddle transfer conveyor (2), and the telescopic belt conveyor are all running at their respective operating rhythms from the extended tail (5). Step 2, 5m work cycle: This includes several stages: initial state, 0-4m tunneling, 4-4.5m tunneling, 4.5-5m tunneling, and the start of a new cycle; Step 3, 50m work cycle: After the continuously operating working face equipment completes several 5m work cycles and reaches the point where the belt storage bin is to be replaced with a new belt, the tunneling face stops tunneling in a predetermined and planned manner and enters the maintenance stage. All aspects of ventilation, water, electricity, communication and transportation are improved to prepare for the start of the next 50m work cycle. Step 4, Tunneling equipment (1) withdrawal: During the maintenance and repair phase of the 50m operation cycle, when the tunneling equipment (1) needs to be withdrawn, the straddle conveyor (2) can follow the tunneling equipment (1) to retreat, so that the unloading end is near the horizontal coal bunker (4) feed guide rail (55) overlapped by 5m, which is convenient for the tunneling equipment (1) cutting mechanism to be repaired.

8. The method for implementing a coal roadway rapid excavation self-moving coal bunker supporting system according to claim 7, characterized in that: The method for implementing the 5m operation cycle is as follows: Initial state: the tunneling equipment (1) is in the tunneling preparation stage, the unloading end of the straddle transfer conveyor (2) is 1.5m above the feed guide rail (55), the equipment vehicle (3) is in the position of preparing to pull the horizontal coal bunker (4), the horizontal coal bunker (4) is in the conveyor running state, the self-extending tail (5) is 5m above the scraper conveyor head section (70), and the pulling cylinder (84) is in the retracted state to 0m. Tunneling equipment (1) continuously tunnels 0-4m: straddle transfer conveyor (2) runs and follows, unloading end is near the feed guide rail (55) overlap 1.5m, equipment vehicle (3) follows the tunneling speed and steps to pull horizontal coal bunker (4) forward and moves 0-4m before accelerating to 5m, horizontal coal bunker (4) is in the conveyor running state, from the extension tail (5) to the scraper conveyor head section (70) overlap 5-0m, the pulling cylinder (84) is in the continuous extension state from 0-4-5m and the displacement and running rhythm are coordinated with the pulling of coal bunker traction cylinder (43); Tunneling equipment (1) continuously tunnels for 4-4.5m and embeds for 1m in operation cycle: straddle conveyor (2) runs and follows, unloading end is at 1m overlap with feed guide rail (55), equipment vehicle (3) stops advancing and pulls horizontal coal bunker (4), horizontal coal bunker (4) is in the state of switching storage equipment operation from conveyor operation, self-extending tail (5) is at 0m overlap with scraper conveyor head section (70), pulling cylinder (84) is in the state of extending 5m and self-extending idler frame (82) has not been deployed, telescopic belt conveyor gradually runs idle; The tunneling equipment (1) continues to tunnel to 4.5-5m: the straddle transfer conveyor (2) runs and follows, the unloading end is at the horizontal coal bunker (4) feed guide rail (55) overlaps 0.5-0m, the straddle section support (27) is fully deployed, the equipment vehicle (3) and the horizontal coal bunker (4) are in a moving and stationary state, the horizontal coal bunker (4) is in the storage equipment running and gradually full, after being pulled from the extension tail (5) it is at the scraper conveyor head section (70) overlaps 0-5m, the pulling cylinder (84) retracts from 5-0m state, and from the extension idler frame (82) it gradually unfolds 0-5m, the telescopic belt conveyor runs idle and extends 0-5m; Tunneling equipment (1) continues tunneling: straddle conveyor (2) runs and follows, unloading end is at the horizontal coal bunker (4) feed guide rail (55) overlaps 0-1m and slides, equipment vehicle (3) follows tunneling equipment (1) forward and pulls horizontal coal bunker (4), horizontal coal bunker (4) resumes conveyor operation and unloading, stops moving from the extension tail (5) overlaps 5m, pull cylinder (84) retracts to 0m, telescopic belt conveyor operates under load.

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