Thin seam fully mechanized coal mining machine tail movable with telescopic belt conveyor

Abstract

The present application belongs to the technical field of fully mechanized mining equipment of coal mine, and particularly relates to a telescopic belt conveyor self-moving tail for fully mechanized mining in thin coal seam; the bearing frame body of the self-moving tail comprises sequentially connected belt guide part, front support part, main frame and rear support part; the front support part and the rear support part comprise vertical jacking mechanism and horizontal pushing mechanism; a walking trolley capable of moving along the length direction of the main frame is arranged on the main frame; the self-moving tail can be connected with the belt conveyor; the belt of the belt conveyor passes through the belt guide part, the front support part and the walking trolley, and then returns to form a conveying system after passing around the turning drum on the walking trolley; the walking trolley serves as a receiving part of the conveying system; the present application can be used as a fulcrum with a bridge-type transshipment machine in the crossheading of thin coal seam to move step by step, has the functions of supporting and guiding the transshipment machine to move, adjusting the deviation of the belt and moving forward automatically, and can meet the needs of rapid advancing of high-yield and high-efficiency working face in thin coal seam.

Description

Technical Field

[0001] This invention belongs to the technical field of coal mine fully mechanized mining equipment, specifically relating to a self-moving tail section of a retractable belt conveyor for fully mechanized mining of thin coal seams. Background Technology

[0002] Self-moving belt conveyor tail sections are crucial transportation equipment in longwall fully mechanized coal mining operations. They serve as the connecting device between the roadway bridge transfer conveyor and the belt conveyor, providing functions such as supporting and guiding the transfer conveyor's movement, adjusting belt misalignment, and self-moving forward. They meet the requirements of rapid advancement in high-yield and high-efficiency working faces, ensuring smooth and seamless roadway transfer transportation. They are one of the preferred equipment for achieving high production and efficiency in modern coal mine longwall faces. Due to the irreplaceable role of self-moving belt conveyor tail sections in high-yield and high-efficiency working face transfer equipment, Shanxi Tiandi Coal Machinery Equipment Co., Ltd., based on the digestion and absorption of imported technologies, has successively developed and manufactured self-moving belt conveyor tail sections with reasonable structure, high reliability, and strong adaptability. Suitable for various medium-thick and thick coal seam mining conditions, they promptly and maximally meet the usage requirements of different users, and have been highly praised by users.

[0003] However, with the rapid development of my country's coal industry and the gradual depletion of medium-thick and thick coal seams, thin coal seam mining, especially achieving safe, reliable, high-yield, and efficient integrated mechanized mining of thin coal seams, has become an important issue for the sustainable development of my country's coal mining industry and a hot topic of concern for major coal enterprises. Therefore, based on the working principle of self-moving tail sections of belt conveyors originally used for medium-thick coal seams, and considering the usage requirements of various coal mines, we have developed a self-moving tail section for belt conveyors in thin coal seams with good applicability. Summary of the Invention

[0004] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0005] To achieve the above objectives, the present invention provides a self-moving tail section of a retractable belt conveyor for thin coal seams. The supporting frame of the self-moving tail section includes a belt guide, a front support, a main frame, and a rear support connected in sequence. The supporting frame is supported on the ground by the front and rear supports. The front and rear supports include a vertical lifting mechanism and a lateral pushing mechanism. The front and rear supports adjust the height of the supporting frame above the ground through the vertical lifting mechanism and adjust the lateral position of the supporting frame through the lateral pushing mechanism. A traveling trolley that can move along its length is arranged on the main frame. The self-moving tail section can connect with a belt conveyor. The belt of the belt conveyor passes through the belt guide, the front support, and the traveling trolley, then bypasses the redirecting roller on the traveling trolley and returns to form the conveying system. The traveling trolley serves as the receiving part of the conveying system.

[0006] Furthermore, the front support includes a support frame assembly, a sliding frame, a left skid, and a right skid;

[0007] The sliding frame is slidably inserted into the horizontal sleeve of the support frame assembly. The left and right ends of the sliding frame are exposed, and a sleeve is set at each of the left and right ends. A slidable guide frame assembly is nested in the sleeve. A height adjustment cylinder is set in the guide frame assembly. The upper end of the height adjustment cylinder is connected to the sleeve and the lower end is connected to the guide frame assembly. The left and right sliding skids are respectively installed at the bottom of the guide frame assemblies at the left and right ends of the sliding frame. A side push cylinder is set between each of the left and right ends of the sliding frame and the support frame assembly.

[0008] The height of the front support unit relative to the ground is adjusted by the extension and retraction of the height adjustment cylinder, and the left and right relative positions of the support frame assembly and the sliding frame are adjusted by the extension and retraction of the side push cylinder; the support frame assembly is fixedly connected to the belt guide and the main frame.

[0009] The rear support section has the same structure as the front support section, but the installation directions of the rear support section and the front support section relative to the main frame are opposite.

[0010] Furthermore, the piston rod of the height adjustment cylinder is connected to the sleeve of the sliding frame through a triangular connecting bracket, the cylinder barrel of the height adjustment cylinder is hinged to the guide frame assembly, and the left and right sliding skids are each coaxially hinged to the cylinder barrel of the height adjustment cylinder and the guide frame assembly.

[0011] Furthermore, the side thrust cylinder is connected to the support frame assembly via a swivel joint; the side thrust cylinder is hinged to the sliding frame.

[0012] Furthermore, the belt guide includes a belt guide frame, a pressure roller, a trough idler frame, and a trough idler; a pressure roller is provided on the lower layer between the two side plates of the belt guide frame, and a trough idler frame is provided on the upper layer. The trough idler is installed in the idler slot of the trough idler frame and is arranged in a V-shape.

[0013] Furthermore, the pressure roller is fixed between the side plates of the belt guide frame by the pressure roller mounting flanges on both sides. A pressure plate is fixed on the outer surface of the pressure roller mounting flange. The pressure plate is used to press the intermediate shaft of the pressure roller and restrict the rotation of the intermediate shaft.

[0014] Furthermore, the traveling trolley includes a trolley frame, a coal guide plate, a front wheel assembly, a slewing axle, a trolley pressing roller, a rear wheel axle assembly, and a redirecting roller;

[0015] Two coal guide plates are installed on the upper front of the side plates of the trolley frame, forming a guide channel that serves as the material receiving part of the traveling trolley. There are two front wheel assemblies, one on each side, installed on the front side of the trolley frame. The rear wheel axle assembly is a coaxial double-wheel structure. The axle of the rear wheel axle assembly is longitudinally hinged to the rear end of the trolley frame. The rear wheel axle assembly can swing around the hinge axle as a fulcrum, causing the two rear wheels to bounce up and down. With the combined support of the front wheel assembly and the rear wheel axle assembly, the traveling trolley can move on the crossbeam of the main frame.

[0016] The slewing bridge includes a slewing support base and a slewing frame. The slewing support base is hinged to the trolley frame and can swing back and forth relative to the trolley frame. The slewing frame is hinged to the slewing support base and can swing left and right relative to the slewing support base. The slewing frame is provided with a vertical hole, through which the slewing frame is connected to the pin shaft at the head of the bridge transfer machine.

[0017] The trolley pressing roller and the redirecting roller are mounted on the trolley frame. The trolley pressing roller is located between the rotary axle and the rear wheel axle assembly; the redirecting roller is located at the rear end of the trolley frame.

[0018] A push cylinder is installed between the main frame and the trolley frame of the traveling trolley.

[0019] Furthermore, a protective cover for the push cylinder is installed on the trolley frame above the push cylinder; a guide roller cover is installed on the trolley frame above the guide roller.

[0020] Furthermore, the front end of the belt guide is hinged to a coal cleaner that can swing up and down. The coal cleaner includes a coal cleaning frame, a coal scraper, and a strip pressure plate. The coal cleaning frame is hinged to the front end of the belt guide. The front end of the coal cleaning frame is a guide surface at a 60° angle to the belt direction. The coal scraper is connected to the coal cleaning frame through the strip pressure plate and bolts.

[0021] Furthermore, the belt guide, front support, main frame, and rear support are fixedly connected by pins.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] Compared with the prior art, this invention has obvious adaptability to thin coal seams. Based on the geological conditions of coal mines and the requirements of field applications, and addressing the practical problems of low roadway height and large equipment size in fully mechanized mining faces with thin coal seams, which leads to poor adaptability of roadway supporting equipment and difficulty in achieving high production and efficiency, this invention adopts a design that combines a main frame, front support, belt guide, coal cleaner, rear support, traveling trolley, pushing cylinder, lubricating oil tank and pin shaft. The whole machine adopts a split and modular design, which is convenient for installation, disassembly and transportation.

[0024] This invention can move stepwise with the bridge-type transfer machine in the thin coal seam roadway, supporting and guiding the transfer machine's movement, adjusting belt deviation, and moving forward on its own. It can meet the needs of rapid advancement of high-yield and high-efficiency working faces in thin coal seams, ensure smooth and good connection of transfer in the thin coal seam roadway, and provide ideal supporting equipment for high-yield and high-efficiency fully mechanized mining operations in thin coal seams.

[0025] This invention enables seamless, non-stop operation of the transfer conveyor head, receiving, transferring, traction belt conveyor redirection roller, height adjustment, and deviation adjustment. The machine operates smoothly, has a large self-propelled propulsion force, and features height and deviation adjustment functions. It achieves a good connection between the roadway bridge transfer conveyor and the telescopic belt conveyor under low roadway conditions. It has advantages such as strong applicability and safety, and is a new type of fully mechanized mining supporting equipment. Attached Figure Description

[0026] Figure 1 Diagram of the overall structure of a retractable belt conveyor with a self-moving tail section for thin coal seams;

[0027] Figure 2 This is a structural diagram of the front support section;

[0028] Figure 3 This is a structural diagram of the belt guide section;

[0029] Figure 4 This is a structural diagram of the coal cleaner;

[0030] Figure 5 This is a structural diagram of the traveling trolley.

[0031] In the diagram: 1-Main frame; 2-Front support; 201-Support frame assembly; 202-Sliding frame; 203-Front cover plate; 204-Left skid; 205-Right skid; 206-Guide frame assembly; 207-Height adjustment cylinder; 208-Triangular connecting frame; 209-Side push cylinder; 210-Swivel joint; 3-Belt guide; 301-Belt guide frame; 302-Pressure roller; 303-Pressure roller mounting flange; 304-Pressure plate; 305-Troughing roller frame; 306-Troughing roller; 4-Coal cleaner ; 401-Coal cleaning frame; 402-Coal scraper; 403-Strip pressure plate; 404-Bolt; 5-Rear support; 6-Traveling trolley; 601-Trolley frame; 602-Coal guide plate; 603-Front wheel assembly; 604-Push-moving cylinder protective cover; 605-Slewing bridge; 606-Trolley pressing roller mounting flange; 607-Rear wheel axle assembly; 608-Redirecting roller; 609-Pressure block; 610-Redirecting roller cover; 611-Trolley pressing roller; 7-Push-moving cylinder; 8-Lubricating oil tank; 9-Pin shaft. Detailed Implementation

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] like Figure 1 As shown: A self-moving tail section of a retractable belt conveyor is used in a thin coal seam. The supporting frame of the self-moving tail section includes a belt guide section 3, a front support section 2, a main frame 1, and a rear support section 5 connected in sequence. The supporting frame is supported by the front support section 2 and the rear support section 5. The front support section 2 and the rear support section 5 include a vertical lifting mechanism and a horizontal pushing mechanism. The front support section 2 and the rear support section 5 adjust the height of the supporting frame above the ground through the vertical lifting mechanism and adjust the lateral position of the supporting frame through the horizontal pushing mechanism. A traveling trolley 6 that can move along its length is arranged on the main frame 1. The self-moving tail section can be connected to the belt conveyor. The belt of the belt conveyor passes through the belt guide section 3, the front support section 2, and the traveling trolley 6, then bypasses the redirecting roller 608 on the traveling trolley 6 and returns to form the conveying system. The traveling trolley 6 serves as the receiving part of the conveying system.

[0034] like Figure 2 As shown: The front support 2 includes a support frame assembly 201, a sliding frame 202, a left sliding skid 204, and a right sliding skid 205. The sliding frame 202 is slidably inserted into the horizontal sleeve of the support frame assembly 201. The left and right ends of the sliding frame 202 are exposed, and a rectangular sleeve structure is provided at each of the left and right ends. A slidable guide frame assembly 206 is nested inside the sleeve. A height adjustment cylinder 207 is provided inside the guide frame assembly 206. The piston rod of the height adjustment cylinder 207 is connected to the sleeve of the sliding frame 202 through a triangular connecting bracket 208. The cylinder of the height adjustment cylinder 207 is connected to the guide frame assembly 205. 06. Hinged connection: The left and right sliding skids 204 and 205 are respectively installed at the bottom of the guide frame assemblies 206 at the left and right ends of the sliding frame 202. The left and right sliding skids 204 and 205 are coaxially hinged to the cylinder of the height adjustment cylinder 207 and the guide frame assembly 206. The left and right sliding skids 204 and 205 can swing. A side push cylinder 209 is provided between the left and right ends of the sliding frame 202 and the support frame assembly 201. The side push cylinder 209 is connected to the support frame assembly 201 through a swivel joint 210. The side push cylinder 209 is hinged to the sliding frame 202.

[0035] The height of the front support 2 relative to the ground is adjusted by the extension and retraction of the height adjustment cylinder 207. When the height adjustment cylinder 207 extends and retracts, the sleeves of the guide frame assembly 206 and the sliding frame 202 slide relative to each other. The left and right relative positions of the support frame assembly 201 and the sliding frame 202 are adjusted by the extension and retraction of the side push cylinder 209. The side push cylinders 209 at both ends of the sliding frame 202 extend and retract, causing the support frame assembly 201 to shift on the sliding frame 202. The support frame assembly 201 is fixedly connected to the belt guide 3 and the main frame 1.

[0036] The front end of the support frame assembly 201 has a guide groove, and the sliding frame 202 is disposed in the guide groove at the front end of the support frame assembly 201. The front cover plate 203 is connected to the front end of the support frame assembly 201, and the support frame assembly 201 and the front cover plate 203 are connected to form a complete horizontal sleeve.

[0037] The rear support section 5 has the same structure as the front support section 2, but their installation directions relative to the main frame 1 are opposite. When the height adjustment cylinders 207 of the rear support section 5 and the front support section 2 extend and retract in tandem, they change the overall ground height of the self-propelled tail support frame. When the side thrust cylinders 209 of the rear support section 5 and the front support section 2 extend and retract in tandem, they change the overall lateral position of the self-propelled tail support frame. This enables the self-propelled tail support to adjust its height and orientation without stopping the machine, ensuring reliable connection between the roadway bridge transfer machine and the belt conveyor during the advancement of the fully mechanized mining face, and smooth material transfer.

[0038] like Figure 3 As shown: The belt guide section 3 includes a belt guide frame 301, a belt pressing roller 302, a trough idler frame 305, and a trough idler 306; the belt pressing roller 302 is arranged on the lower layer between the two side plates of the belt guide frame 301, and the trough idler frame 305 is arranged on the upper layer. The trough idler 306 is installed in the idler slot of the trough idler frame 305 and is arranged in a V-shape.

[0039] The pressure roller 302 is fixed between the side plates of the belt guide frame 301 by the pressure roller mounting flanges 303 on both sides. The outer surface of the pressure roller mounting flange 303 is fixed with a pressure plate 304, which is used to press the intermediate shaft of the pressure roller 302 and restrict the rotation of the intermediate shaft.

[0040] like Figure 4As shown: The front end of the belt guide 3 is hinged to a coal cleaner 4 that can swing up and down. The coal cleaner 4 includes a coal cleaning frame 401, a coal scraper 402, and a strip pressure plate 403. The coal cleaning frame 401 is hinged to the front end of the belt guide 3. The coal cleaner 4 is located on the lower belt surface of the belt conveyor and is used to scrape off the material on the lower belt to prevent the material from being rolled into the drum. The front end of the coal cleaning frame 401 is a guide surface at a 60° angle to the belt direction so that the material on the upper surface of the lower belt can fall onto the roadway floor in time along the guide surface. The coal scraper 402 is connected to the coal cleaning frame 401 through the strip pressure plate 403 and bolts 404. To ensure that the coal cleaner 4 has sufficient cleaning force, the coal cleaner 4 should be designed with sufficient weight.

[0041] The belt guide 3, front support 2, main frame 1 and rear support 5 are fixedly connected by pins 9; the whole machine is modularly designed, can be transported and assembled separately, and is easy to install, disassemble and transport.

[0042] like Figure 5 As shown: The traveling trolley 6 includes a trolley frame 601, a coal guide plate 602, a front wheel assembly 603, a rotary bridge 605, a trolley pressing roller 611, a rear wheel axle assembly 607, and a redirecting roller 608;

[0043] Two coal guide plates 602 are installed at the upper front of the side plates of the trolley frame 601. The two coal guide plates 602 form a guide channel, which serves as the receiving part of the traveling trolley 6 and guides the material transported by the roadway bridge transfer machine. Then the material is conveyed to the belt guide part 3 on the belt conveyor. There are two front wheel assemblies 603, one on the left and one on the right, installed on the front sides of the trolley frame 601. The rear wheel axle assembly 607 is a coaxial double wheel structure. The axle of the rear wheel axle assembly 607 is longitudinally hinged to the rear end of the trolley frame 601. The wheel axle assembly 607 can swing around the hinge shaft as a fulcrum, causing the two rear wheels to bounce up and down. With the joint support of the front wheel assembly 603 and the rear wheel axle assembly 607, the traveling trolley 6 can move on the crossbeam of the main frame 1. When the crossbeam of the main frame 1 is uneven, the rear wheel axle assembly 607 can swing left and right, so that the two rear wheels on the rear wheel axle assembly 607 keep in contact with the crossbeam of the main frame 1. As the rear wheel axle assembly 607 twists and turns with the rise and fall of the crossbeam, the two front wheel assemblies 603 can also keep in contact with the crossbeam of the main frame 1.

[0044] The slewing bridge 605 includes a slewing support base and a slewing frame. The slewing support base is hinged to the trolley frame 601 and can swing back and forth relative to the trolley frame 601. The slewing frame is hinged to the slewing support base and can swing left and right relative to the slewing support base. The slewing frame is provided with a vertical hole, through which the slewing frame is connected to the pin shaft at the head of the bridge transfer machine.

[0045] The trolley pressing roller 611 and the redirecting roller 608 are mounted on the trolley frame 601. The trolley pressing roller 611 is located between the slewing axle 605 and the rear wheel axle assembly 607. The trolley pressing roller 611 is installed between the two side plates of the trolley frame 601 through the trolley pressing roller mounting flange 606. The redirecting roller 608 is located at the rear end of the trolley frame 601.

[0046] The lower belt of the belt conveyor passes under the coal cleaner 4 and then enters through the gap between the coal cleaner 4 and the belt guide 3. After being redirected twice by the pressure roller 302 on the belt guide 3, it enters the reserved belt groove of the front support 2, and then enters the reserved belt groove of the main frame 1. After passing around the redirecting roller 608, it becomes the upper belt. After being redirected by the trolley pressure roller 611, the upper belt passes under the rotary bridge 605. Then, the upper belt passes through the middle of the guide plate 602 and the trough idler 306 of the belt guide 3 and enters the upper idler group of the belt conveyor.

[0047] A push cylinder 7 is installed between the main frame 1 and the trolley frame 601 of the traveling trolley 6. The push cylinder 7 is used to move the traveling trolley 6. The push cylinder 7 can also pull the tail of the self-propelled conveyor forward, using the chute bridge transfer machine and the traveling trolley 6 as fulcrums. The slewing bridge 605 of the traveling trolley 6 is connected to the pin at the head of the bridge transfer machine as a fulcrum. When the push cylinder 7 retracts, the traveling trolley 6 remains stationary relative to the bridge transfer machine, and the push cylinder 7 pulls the main frame 1 to move.

[0048] A push cylinder protective cover 604 is installed on the trolley frame 601 above the push cylinder 7; a redirecting roller cover 610 is installed on the trolley frame 601 above the redirecting roller 608 to prevent falling materials from damaging the push cylinder 7 and the redirecting roller 608.

[0049] A lubricating oil tank 8 is installed near the outer end of the trolley pressure roller 611 and the redirecting roller 608.

[0050] The thin coal seam fully mechanized conveyor adopts a self-moving tail section of a retractable belt conveyor to replace the tail section of the retractable belt conveyor and support the head section and the climbing section of the roadway bridge transfer machine. It has functions such as supporting and guiding the bridge transfer machine to move, adjusting belt deviation, and moving forward on its own. It can meet the needs of rapid advancement of high-yield and high-efficiency working faces and ensure smooth and good connection of roadway transfer transportation.

[0051] During production, this invention supports the retractable belt conveyor redirecting roller and propels it together with the chute bridge transfer machine. The traveling trolley receives the materials transported by the bridge transfer machine and then transfers them to the belt conveyor behind it. At the same time, it can also guide the bridge transfer machine to a new work station.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fully mechanized conveyor system for thin coal seams using a retractable belt conveyor with a self-moving tail section, characterized in that: The self-propelled tail section's support frame includes a belt guide (3), a front support (2), a main frame (1), and a rear support (5) connected in sequence. The support frame is supported by the front support (2) and the rear support (5) on the ground. The front support (2) and the rear support (5) include a vertical lifting mechanism and a horizontal pushing mechanism. The front support (2) and the rear support (5) adjust the height of the support frame above the ground through the vertical lifting mechanism and adjust the lateral position of the support frame through the horizontal pushing mechanism. A traveling trolley (6) that can move along its length is arranged on the main frame (1). The self-propelled tail section can be connected to a belt conveyor. The belt of the belt conveyor passes through the belt guide (3), the front support (2), and the traveling trolley (6) and then goes around the redirecting roller (608) on the traveling trolley (6) before returning to form a conveying system. The traveling trolley (6) serves as the receiving part of the conveying system. The front support (2) includes a support frame assembly (201), a sliding frame (202), a left skid (204), and a right skid (205). The sliding frame (202) is slidably inserted into the horizontal sleeve of the support frame assembly (201). The left and right ends of the sliding frame (202) are exposed, and a sleeve is provided at each of the left and right ends. A slidable guide frame assembly (206) is nested in the sleeve. A height adjustment cylinder (207) is provided in the guide frame assembly (206). The upper end of the height adjustment cylinder (207) is connected to the sleeve, and the lower end is connected to the guide frame assembly (206). The left sliding skid (204) and the right sliding skid (205) are respectively installed at the bottom of the guide frame assembly (206) at the left and right ends of the sliding frame (202). A side push cylinder (209) is provided between each of the left and right ends of the sliding frame (202) and the support frame assembly (201). The front support (2) adjusts its height relative to the ground by extending and retracting the height adjustment cylinder (207), and adjusts the left and right relative positions of the support frame assembly (201) and the sliding frame (202) by extending and retracting the side push cylinder (209); the support frame assembly (201) is fixedly connected to the belt guide (3) and the main frame (1); The rear support (5) has the same structure as the front support (2), and the rear support (5) and the front support (2) are installed in opposite directions relative to the main frame (1); The piston rod of the height adjustment cylinder (207) is connected to the sleeve of the sliding frame (202) through the triangular connecting bracket (208). The cylinder of the height adjustment cylinder (207) is hinged to the guide frame assembly (206). The left sliding skid (204) and the right sliding skid (205) are respectively coaxially hinged to the cylinder of the height adjustment cylinder (207) and the guide frame assembly (206).

2. The self-moving tail section of a fully mechanized telescopic belt conveyor for thin coal seams according to claim 1, characterized in that: The side-push cylinder (209) is connected to the support frame assembly (201) via a rotary joint (210); the side-push cylinder (209) is hinged to the sliding frame (202).

3. The self-moving tail section of a fully mechanized telescopic belt conveyor for thin coal seams according to claim 1, characterized in that: The belt guide (3) includes a belt guide frame (301), a belt pressing roller (302), a trough idler frame (305), and a trough idler (306). The belt guide frame (301) has a belt pressing roller (302) on the lower layer and a trough idler frame (305) on the upper layer between the two side plates. The trough idler (306) is installed in the idler slot of the trough idler frame (305) in a V-shaped arrangement.

4. The self-moving tail section of a telescopic belt conveyor for thin coal seams according to claim 3, characterized in that: The pressure roller (302) is fixed between the side plates of the belt guide frame (301) by the pressure roller mounting flanges (303) on both sides. A pressure plate (304) is fixed on the outer surface of the pressure roller mounting flange (303). The pressure plate (304) is used to press the intermediate shaft of the pressure roller (302) and restrict the rotation of the intermediate shaft.

5. The self-moving tail section of a fully mechanized telescopic belt conveyor for thin coal seams according to claim 1, characterized in that: The traveling trolley (6) includes a trolley frame (601), a coal guide plate (602), a front wheel assembly (603), a rotary bridge (605), a trolley pressing roller (611), a rear wheel axle assembly (607), and a redirecting roller (608). Two coal guide plates (602) are installed on the upper front of the two side plates of the trolley frame (601). The two coal guide plates (602) form a guide channel, which serves as the receiving part of the traveling trolley (6). There are two front wheel assemblies (603) on the left and right sides, which are installed on the front side of the trolley frame (601). The rear wheel axle assembly (607) is a coaxial double wheel structure. The axle of the rear wheel axle assembly (607) is longitudinally hinged to the rear end of the trolley frame (601). The rear wheel axle assembly (607) can swing with the hinge axis as the fulcrum to make the two rear wheels jump up and down. With the joint support of the front wheel assembly (603) and the rear wheel axle assembly (607), the traveling trolley (6) can move on the crossbeam of the main frame (1). The slewing bridge (605) includes a slewing support seat and a slewing frame. The slewing support seat is hingedly mounted on the trolley frame (601). The slewing support seat can swing back and forth relative to the trolley frame (601). The slewing frame is hingedly connected to the slewing support seat. The slewing frame can swing left and right relative to the slewing support seat. The slewing frame is provided with a vertical hole, through which the slewing frame is connected to the pin shaft at the head of the bridge transfer machine. The trolley pressing roller (611) and the redirecting roller (608) are mounted on the trolley frame (601). The trolley pressing roller (611) is located between the rotary axle (605) and the rear wheel axle assembly (607); the redirecting roller (608) is located at the rear end of the trolley frame (601). A push cylinder (7) is installed between the main frame (1) and the trolley frame (601) of the traveling trolley (6).

6. The self-moving tail section of a fully mechanized telescopic belt conveyor for thin coal seams according to claim 5, characterized in that: A push cylinder protective cover (604) is installed on the trolley frame (601) above the push cylinder (7); a diversion roller cover (610) is installed on the trolley frame (601) above the diversion roller (608).

7. A self-moving tail section of a fully mechanized telescopic belt conveyor for thin coal seams according to any one of claims 1 to 6, characterized in that: The front end of the belt guide (3) is hinged to a coal cleaner (4) that can swing up and down. The coal cleaner (4) includes a coal cleaning frame (401), a coal scraper (402) and a strip pressure plate (403). The coal cleaning frame (401) is hinged to the front end of the belt guide (3). The front end of the coal cleaning frame (401) is a guide surface at 60° to the belt direction. The coal scraper (402) is connected to the coal cleaning frame (401) through the strip pressure plate (403) and bolts (404).

8. A self-moving tail section of a fully mechanized telescopic belt conveyor for thin coal seams according to any one of claims 1 to 6, characterized in that: The belt guide (3), front support (2), main frame (1) and rear support (5) are fixedly connected by a pin (9).

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