A pushable compact transfer belt machine tail

Abstract

The utility model relates to the technical field of coal mine underground crossheading belt conveyor equipment, and concretely relates to a compact transfer belt conveyor tail that can be pushed, and its characterized in that the transfer belt conveyor tail is mainly composed of front frame body, middle frame body, rear frame body, belt pressing roller, change direction roller, coal scraping plate, vertical carrier roller, buffer carrier roller group and the like. The middle frame body can be set to be multiple according to the coal mining technology, the buffer carrier roller group is installed in the middle frame body coal unloading section, and the impact of coal material on the belt is reduced. When the working face retreat type coal mining approaches the working face termination line, the transfer machine, the crusher and the belt self-moving tail are removed, the device is directly connected with the crossheading belt conveyor, is arranged below the end unloading scraper conveyor head unloading point, the rear frame body is connected with the crossheading advanced support, and the front movement of the crossheading advanced support is realized. The utility model has the advantages of short arrangement length, guaranteeing the coal material transfer, increasing the working face advancing mining length, improving the working face coal recovery rate and reducing the waste of coal resources.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology for underground coal mine roadway equipment, specifically a movable, compact transfer belt tail that can improve coal recovery rate. Background Technology

[0002] With the continuous advancement of coal mining technology, mining conditions place higher demands on the adaptability of coal mining equipment. Coal faces generally employ longwall retreat mining, where a scraper conveyor unloads coal into the unloading chute at the tail of a roadway transfer machine. The coal then passes through the tail of the transfer machine, the crusher, and the main body of the transfer machine before being unloaded onto the tail of a belt conveyor, and finally transported to the surface by a belt conveyor. Based on actual coal mine usage, the tail of the roadway transfer machine, the crusher, the main body of the transfer machine, and the tail of the belt conveyor occupy approximately 60-80 meters of roadway length. When retreat mining reaches near the end of the working face, the advance of the final working face is limited by the excessive distance occupied by the tail of the transfer machine, the crusher, the main body of the transfer machine, and the tail of the belt conveyor within the roadway, preventing further progress. If mining continues forward, the only way to advance is by dismantling the transfer conveyor's landing section and cycling forward. This method is time-consuming and labor-intensive, and the distance occupied by the crusher, transfer conveyor, and belt conveyor tail section cannot be mined, resulting in a waste of coal resources. Therefore, how to effectively mine coal near the end of the working face, increase the coal mining rate at the end of the working face, and reduce the waste of coal resources is an urgent technical problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a movable, compact conveyor belt tail that increases the mining length at the end of the working face, improves the coal mining rate of the working face, and reduces the waste of coal resources.

[0004] When the working face is mined to near its end, the transfer machine, crusher, and belt conveyor tail section are dismantled. The tail section 1 of the transfer conveyor belt is connected to the belt conveyor belt. The intermediate frame 12 of the tail section is located below the unloading point of the end-discharge scraper conveyor head 2. The rear frame 3 of the tail section is connected to the chute advance support 3. When the chute advance support 3 moves forward, the entire tail section 1 of the transfer conveyor belt moves forward simultaneously. The tail section of the transfer conveyor belt consists of a front frame 11, an intermediate frame 12, a rear frame 13, a pressure roller 14, a redirecting roller 15, a coal scraper 16, vertical idlers 17, a buffer idler group 18, a pressure plate 19, and a coal-blocking pressure plate 20. The front frame 11, intermediate frame 12, and rear frame 13 are connected by a single pin shaft, allowing for small-angle rotation to adapt to the undulations of the chute floor. At the rear frame 13, the belt is deflected by the redirecting roller 15 and then pressed by the pressure roller 14 to adjust the belt height, ensuring that the belt can smoothly enter the belt channel of the intermediate frame 12. Before the belt is wound into the redirecting drum 15, a scraper plate 16 is installed on the upper surface of the belt to scrape off dust and debris, ensuring smooth operation of the belt. A set of vertical idlers 17 is installed on both the rear frame 13 and the front frame 11, which work together to prevent belt deviation. Multiple intermediate frames 12 can be configured according to the coal mining process. Two types of belt pressing plates are installed on the intermediate frames 12: a common belt pressing plate 19 and a coal-blocking belt pressing plate 20. Buffer idler sets 17 are installed in the coal unloading section of the intermediate frames to reduce the impact of coal on the belt and improve belt life.

[0005] It solves the problem of insufficient coal mining at the end of the retreating coal face, increases the coal mining rate of the face, reduces the waste of coal resources, reduces the workload of coal mining at the end of the face, saves labor, and ensures the safety of workers. Attached Figure Description

[0006] The accompanying drawings, which constitute the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a diagram showing the layout of the belt conveyor tail section and the advance support. Figure 2 This is the main view of the tail section of a transfer conveyor belt. Figure 3 This is a top view of the tail section of a conveyor belt.

[0007] In the diagram: 1. Tail end of transfer conveyor belt; 11. Front frame; 12. Intermediate frame; 13. Rear frame; 14. Pressure roller; 15. Idling roller; 16. Coal scraper; 17. Vertical idler; 18. Buffer idler group; 19. Pressure plate; 20. Coal retaining pressure plate; 2. Head end of end discharge scraper conveyor; 3. Advance support for the roadway. Detailed Implementation

[0008] like Figure 1 As shown, when the working face is mined to near the end of the working face, the transfer machine, crusher and belt self-moving tail are removed. The transfer belt tail 1 is connected to the belt conveyor. The intermediate frame 12 of the transfer belt tail is arranged below the unloading point of the end unloading scraper conveyor head 2. The rear frame 3 of the transfer belt tail is connected to the haulage roadway advance support 3. When the haulage roadway advance support 3 moves forward, the entire transfer belt tail 1 moves forward at the same time.

[0009] like Figure 2 As shown, the tail section of the transfer belt conveyor consists of a front frame 11, a middle frame 12, a rear frame 13, and a belt pressing roller. 14. The system comprises a redirecting roller 15, a scraper 16, vertical idlers 17, a buffer idler group 18, a belt pressing plate 19, and a coal-blocking belt pressing plate 20. The front frame 11, intermediate frame 12, and rear frame 13 are connected by a single pin, allowing for small-angle rotation to adapt to the unevenness of the roadway floor. At the rear frame 13, the belt is deflected by the redirecting roller 15 and then pressed by the belt pressing roller 14 to adjust the belt height, ensuring smooth entry into the belt channel of the intermediate frame 12. Before the belt is wound into the redirecting roller 15, a scraper 16 is installed on the upper surface of the belt to remove dust and debris, ensuring smooth belt operation. Each of the rear frame 13 and the front frame 11 is equipped with a set of vertical idlers 17, which interact to prevent belt deviation.

[0010] Figure 3 As shown, two types of belt pressure plates are installed on the intermediate frame 12: one is a common belt pressure plate 19, installed near the coal unloading side of the end-discharge scraper conveyor head 2, which provides a passage for belt operation; the other is a coal-blocking belt pressure plate 20, installed on the other side of the intermediate frame 12. Besides providing a passage for belt operation like the common belt pressure plate 19, it also prevents coal leakage during scraper conveyor unloading. Buffer idler sets 18 are installed in the coal unloading section of the intermediate frame 12 to reduce the impact of coal on the belt and improve belt life.

[0011] In summary, the conveyor belt tail section solves the problem of insufficient mining at the end of retreating coal faces due to the excessive length occupied by the roadway equipment, thereby increasing the coal mining rate and reducing coal resource waste. Simultaneously, it reduces the workload of coal mining near the end of the face, ensuring worker safety.

[0012] It should be understood that the above detailed description of the technical solutions of this utility model with reference to preferred embodiments is illustrative and not restrictive. Those skilled in the art can modify the technical solutions described in the embodiments or make equivalent substitutions for some of the technical features based on reading this utility model specification. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A movable, compact transfer belt conveyor tail, characterized in that: The tail section of the conveyor belt consists of a front frame (11), a middle frame (12), a rear frame (13), a belt pressing roller (14), a redirecting roller (15), a coal scraper (16), vertical idlers (17), and a buffer idler group (18). The belt is composed of a pressure plate (19) and a coal-blocking pressure plate (20); the front frame (11), the middle frame (12) and the rear frame (13) are connected by a single pin shaft and can rotate at a small angle to each other; at the rear frame (13), the belt is turned back by the redirecting roller (15) and then pressed by the pressure roller (14) to adjust the belt height and ensure that the belt can smoothly enter the belt channel of the middle frame (12); before the belt is wound into the redirecting roller (15), a scraper plate (16) is set on the upper surface of the belt to scrape off the dust and debris on the upper surface of the belt; the rear frame (13) and the front frame (11) are each equipped with a set of vertical idlers (17), which can prevent the belt from running off track under their interaction; the middle frame (12) can be set to multiple according to the coal mining process, and two types of pressure plates are installed on the middle frame (12): one is a common pressure plate (19) and the other is a coal-blocking pressure plate (20). The coal unloading section of the middle frame is equipped with vertical idlers (17).

2. The movable compact transfer belt conveyor tail as described in claim 1, characterized in that: The tail of the transfer belt conveyor (1) is connected to the belt of the belt conveyor. The intermediate frame (12) of the tail of the transfer belt conveyor is arranged below the unloading point of the head (2) of the end unloading scraper conveyor. The rear frame (13) of the tail of the transfer belt conveyor is connected to the advance support (3) of the roadway.

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