A retractable head push-through shutter

Abstract

The utility model relates to the technical field of coal mine underground fully mechanized coal mining face rear scraper conveyor, specifically a telescopic machine head pushes away baffle. Since the rear scraper conveyor coal delivery capacity is bigger, a large amount of coal is spilled in the middle trough, leading to the coal pile up in the machine head, affecting the safety of the machine head transmission device. The utility model provides a telescopic machine head pushes away baffle, mainly includes pull shift part, its characterized in that still includes fixed baffle, movable baffle, connecting pin and oil cylinder. The lower part of fixed baffle is connected through pin and bolt with pull shift part. Fixed baffle and movable baffle are hinged through pin shaft, and movable baffle is further provided with baffle and coal shovel plate. The angle of pushing away baffle can be controlled through oil cylinder to meet the purpose of stopping coal on the outside of transmission device, and the coal shovel plate is used to make the coal better enter the middle trough during the process of hydraulic support pulling the rear conveyor. The utility model is simple in structure, safe and reliable, and is suitable as the auxiliary device of the rear scraper conveyor.

Description

Technical Field

[0001] This utility model relates to the technical field of scraper conveyors at the rear of fully mechanized coal mining faces, specifically a retractable head pusher baffle. Background Technology

[0002] Coal mine scraper conveyors primarily rely on a transmission device to power the scraper chain for coal transport. Damage to the transmission device will prevent the scraper conveyor from functioning properly, thus affecting the progress of coal mining. When using the top-coal caving method, the coal seam collapses in bulk, with most of it falling into the rear scraper conveyor and being transported out of the working face. A significant portion of the coal falls in front of the rear scraper conveyor and needs to be shoveled into its trough during the hydraulic support's movement. Therefore, when the amount of coal falling is large, a large amount accumulates near the transmission device, affecting its safety. Currently, the coal near the transmission device can only be cleared manually. Due to the large volume of coal, to ensure worker safety, the machine must be stopped before clearing the coal, and this often requires frequent clearing. This situation increases the workload of workers and affects mining efficiency; moreover, the top-coal caving method may even threaten worker safety during the coal caving process. Therefore, researching a retractable head-pushing baffle to solve this problem is urgently needed. Summary of the Invention

[0003] The purpose of this utility model is to provide a retractable head push baffle to solve the problem that the large accumulation of coal affects the safety of the transmission device of the rear scraper conveyor.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A retractable head pusher baffle mainly includes a pulling part, characterized in that it further includes a fixed baffle, a movable baffle, a hydraulic cylinder, a pin, and a fixing pin. The lower part of the fixed baffle is connected to the pulling part by pins and bolts, fixing it to the pulling part to form a whole. The fixed baffle and the movable baffle are hinged by the pin. The hydraulic cylinder is installed between the fixed baffle and the movable baffle and is connected by the fixing pin.

[0006] The angles of the movable and fixed baffles are controlled by adjusting the length of the cylinder piston rod to prevent coal from entering the vicinity of the transmission device.

[0007] Furthermore, the movable baffle is equipped with a coal shovel plate and a baffle. The coal shovel plate is set in two directions: one is along the extension and retraction direction of the baffle, and the other is along the pulling direction of the hydraulic support. The coal shovel plates in these two directions can guide the coal smoothly into the central trough.

[0008] Furthermore, the angle of the movable baffle is adjusted by controlling the extension and retraction length of the cylinder piston rod through a hydraulic system.

[0009] The beneficial effects of this utility model are mainly reflected in:

[0010] The retractable head pusher baffle provided by this utility model has a wide range of adaptability and can adapt to working conditions where the coal discharge volume is large and a large part of the coal falls in front of the rear scraper conveyor.

[0011] The telescopic machine head push baffle provided by this utility model adopts a welded structure, has a simple design principle, is easy to implement in the process, and has good economic and practical performance.

[0012] The telescopic head push baffle provided by this utility model uses a hydraulic cylinder as the driving force, which is convenient, labor-saving, safe and reliable. Attached Figure Description

[0013] The accompanying drawings constituting this utility model are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0014] In the attached diagram:

[0015] Figure 1 Schematic diagram of the retractable head push baffle assembly structure;

[0016] Figure 2 Top view of the retractable head push-out baffle;

[0017] Figure 3 Front view of the retractable head push baffle at its maximum extension angle (100°);

[0018] Figure 4 This is a side view of the movable baffle.

[0019] In the diagram: 1. Pulling part, 2. Fixed baffle, 3. Hydraulic cylinder, 4. Fixed pin, 5. Movable baffle, 6. Pin shaft, 51. Baffle, 52. Coal shovel plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be described in complete and clear form below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all of them.

[0021] like Figures 1-3As shown, this utility model provides a telescopic head pushing baffle, mainly including a pulling part 1. Its distinguishing feature is that it further includes a fixed baffle 2, a hydraulic cylinder 3, a fixing pin 4, a movable baffle 5, and a pin 6. The lower part of the fixed baffle 2 is connected to the pulling part 1 by pins and bolts. The fixed baffle 2 and the movable baffle 5 are hinged together by the pin 6. The hydraulic cylinder 3 is installed between the fixed baffle 2 and the movable baffle 5 and is connected by the fixing pin 4.

[0022] like Figures 2-4 As shown, the process of the telescopic head pushing baffle moving is as follows:

[0023] First, by controlling the hydraulic control system, hydraulic fluid is supplied to cylinder 3, causing the piston rod to extend. This allows the movable baffle 5 to rotate around the pin 6. The shovel plate 51 on the movable baffle 5 scoops up the coal, which is then fed into the central trough as the hydraulic support pulls the rear scraper conveyor, thus achieving coal recovery. The angle of the movable baffle 5 can be controlled by adjusting the length of the piston rod, with a maximum extension angle of 100°.

[0024] like Figure 4 As shown, during the coal transportation process of the rear scraper conveyor, due to the large amount of coal discharged, coal overflows from the middle trough. The movable baffle 5 blocks the coal outside the transmission device, preventing coal from entering the vicinity of the head transmission device and effectively protecting the safety of the transmission device.

[0025] 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 retractable machine head push baffle, mainly comprising a pulling part (1), characterized in that, It also includes a fixed baffle (2), a hydraulic cylinder (3), a fixed pin (4), a movable baffle (5), and a pin (6); the lower part of the fixed baffle (2) is connected to the pulling part (1) by pins and bolts; the fixed baffle (2) and the movable baffle (5) are hinged by the pin (6); the hydraulic cylinder (3) is installed between the fixed baffle (2) and the movable baffle (5) and is connected by the fixed pin (4).

2. The retractable machine head pusher baffle according to claim 1, characterized in that, The movable baffle (5) is equipped with a baffle (51) and a coal shovel plate (52).

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