Downhole temporary gangue bin feeding and discharging equipment

Abstract

The utility model provides feeding and discharging equipment for an underground temporary gangue bin. The feeding and discharging equipment comprises a bin entering belt conveyor, a bin exiting scraper conveyor and a pair of telescopic gangue collecting plates. The warehousing belt conveyor is arranged at the top of the underground temporary gangue warehouse and is used for transporting gangue to the warehouse-out scraper; the delivery scraper is arranged at the bottom of the underground temporary gangue bin and used for storing and transporting gangue outwards. The telescopic gangue collecting plates are arranged on the two sides of the warehouse-out scraper in a turnover mode and used for bearing gangue and collecting the gangue towards the center of the warehouse-out scraper. According to the underground temporary gangue bin feeding and discharging equipment, the gangue transportation efficiency can be improved, the gangue storage capacity is improved, and the situation that gangue is overhead above a bin discharging scraper is avoided.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machinery, specifically to a temporary underground gangue bin loading and unloading device. Background Technology

[0002] In underground coal mining, if there are multiple faults, quarrying is inevitable. Alternatively, if thin coal seams are encountered, with a thickness of less than 1.5 meters or even lower, simply cutting the coal seam may not provide enough height for operators to work upright. In such cases, some gangue needs to be quarried to allow operators to work upright. During quarrying, gangue cannot be transported into the raw coal transport system as it would degrade the coal's quality. It must be transported during gaps in the underground raw coal transport. At the mining face, gangue is first loaded into mine cars using loading equipment or transported directly to a temporary gangue bin via belt conveyor. Once a certain amount of gangue has accumulated in the temporary bin, it is raked out using equipment such as scraper loaders and loaded into mine cars for transport. The existing methods for loading and transporting gangue require manual operation of mine cars and scraper loaders, resulting in low automation, low transportation efficiency, and risks to personal safety due to gangue collapses and landslides.

[0003] Patent CN104929682B discloses a method for underground gangue removal in coal mines. The method involves constructing an inclined gangue removal tunnel connecting two transport tunnels with a height difference at the working face of the coal mine. The starting point of the gangue removal tunnel is the intersection of the transport tunnel closer to the ground and the tunnel. A transfer conveyor belt is installed at the top of the gangue removal tunnel, and a unloader is installed at the starting point. Several plow-type unloaders are installed on the transfer conveyor belt. A 630 scraper conveyor is installed along one side of the bottom of the entire gangue removal tunnel. This method not only directly separates gangue underground, achieving underground gangue sorting and transportation, but also improves coal quality and increases coal mine efficiency. However, this method has drawbacks, including insufficient transport capacity of the scraper conveyor and the problem of gangue remaining suspended above the scraper conveyor due to the inability of the top gangue to fall in time. Utility Model Content

[0004] In order to improve the transportation efficiency of gangue, increase the storage capacity of gangue, and avoid gangue being suspended above the discharge scraper conveyor, the technical solution adopted by this utility model is: a temporary underground gangue bin feeding and discharging device, including an inlet belt conveyor, a discharge scraper conveyor, and a pair of telescopic gangue collecting plates.

[0005] The inlet conveyor belt is installed on top of the underground temporary gangue bin and is used to transport gangue to the outlet scraper conveyor.

[0006] The scraper conveyor is located at the bottom of the underground temporary gangue bin and is used to store and transport gangue.

[0007] A pair of telescopic gangue collecting plates are flip-mounted on both sides of the discharge scraper to carry gangue and gather it toward the center of the discharge scraper.

[0008] Based on the above, in order to facilitate the inward collection of gangue, the telescopic gangue collecting plate includes a fixed plate hinged to the discharge scraper. A movable plate is slidably arranged at one end of the fixed plate. A hydraulic cylinder is connected to the lower part of the movable plate. The hydraulic cylinder is used to lift the telescopic gangue collecting plate and push the movable plate to slide on the fixed plate.

[0009] Based on the above, in order to increase the support capacity, the lower surface of the telescopic coal collection plate is provided with support legs.

[0010] Based on the above, the pair of telescopic waste collection plates are symmetrically arranged with the center line of the discharge scraper as the axis of symmetry.

[0011] Based on the above, in order to facilitate the falling of gangue, a plow-type unloader is also slidably installed above the inlet conveyor belt. The plow-type unloader is used to push the gangue on the inlet conveyor belt onto the outlet scraper conveyor.

[0012] Based on the above, in order to facilitate sliding, the top of the underground temporary gangue bin is equipped with a slide rail for the plow-type coal unloader to slide on. The plow-type coal unloader may be externally connected to a pull rope.

[0013] Based on the above, the conveyor belt for entering the storage area is installed on top of the temporary gangue storage area underground via steel cables.

[0014] This utility model has substantial features and advancements compared to existing technologies. Specifically, the underground temporary gangue bin feeding and discharging equipment provided by this utility model arranges an inlet belt conveyor at the top of the underground temporary gangue bin, an outlet scraper conveyor at the bottom of the gangue bin, and telescopic gangue collecting plates that can retract inward on both sides of the outlet scraper conveyor. Thus, when gangue enters the bin, the fully outward-expanding gangue collecting plates can be used to receive the gangue scraped off from the inlet belt conveyor, thereby increasing the gangue storage capacity without changing the size of the outlet scraper conveyor itself.

[0015] Meanwhile, when the gangue is discharged from the bin, the telescopic gangue receiving plate can be used to gather and squeeze the gangue inward, ensuring that the gangue can fall onto the discharge scraper, thus avoiding the phenomenon of the upper part of the gangue being suspended above the discharge scraper during the outward transportation of the gangue. Attached Figure Description

[0016] Figure 1 and Figure 2 This is a schematic diagram of the overall layout of the underground temporary gangue bin feeding and discharging equipment provided by this utility model.

[0017] Figure 3This is a schematic diagram of the storage status of gangue in the underground temporary gangue bin feeding and discharging equipment provided by this utility model.

[0018] Figure 4 This is a schematic diagram of the unfolded state of the underground temporary gangue bin feeding and discharging equipment provided by this utility model.

[0019] Figure 5 This is a schematic diagram of the underground temporary gangue bin loading and unloading equipment in the retracted state provided by this utility model.

[0020] In the diagram: 1. First belt conveyor transport roadway; 2. Second belt conveyor transport roadway; 3. Third belt conveyor transport roadway; 4. Underground temporary gangue bin; 5. Plow-type coal unloader; 6. Slide rail; 7. Inbound belt conveyor; 8. Outbound scraper conveyor; 9. Steel cable; 10. Gangue; 11. Central trough; 12. Outrigger; 13. Hydraulic cylinder; 14. Fixed plate; 15. Movable plate. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0022] Example 1

[0023] This embodiment provides a temporary underground gangue bin loading and unloading device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, it includes an inbound conveyor belt 7, an outbound scraper conveyor 8, and a pair of telescopic waste collection plates.

[0024] The inlet conveyor belt 7 is installed at the top of the underground temporary gangue bin 4 and is used to transport gangue 10 to the outlet scraper conveyor 8. The outlet scraper conveyor 8 is installed at the bottom of the underground temporary gangue bin 4 and is used to store and transport gangue 10.

[0025] A pair of telescopic gangue collecting plates are flip-mounted on both sides of the discharge scraper 8 to carry the gangue 10 and gather the gangue 10 toward the center of the discharge scraper 8.

[0026] In this embodiment, to facilitate inward retraction, the telescopic collecting plate includes a fixed plate 14 hinged to the discharge scraper 8, and a movable plate 15 is slidably disposed at one end inside the fixed plate 14. Specifically, the discharge scraper 8 includes a scraper tail, a scraper head, and a central trough 11, and a scraper chain is rotatably disposed within the central trough 11. One end of the fixed plate 14 is hinged to the side wall of the central trough 11.

[0027] A hydraulic cylinder 13 is connected to the lower part of the movable plate 15. The hydraulic cylinder 13 is used to lift the telescopic waste collection plate and push the movable plate 15 to slide on the fixed plate 14. The inlet conveyor belt 7 is set on top of the underground temporary waste bin 4 via a steel cable 9.

[0028] Specifically, the underground temporary waste rock storage 4 is connected between the first belt conveyor transport roadway 1 and the second belt conveyor transport roadway 2. The first belt conveyor transport roadway 1 is connected to the third belt conveyor transport roadway 3.

[0029] Example 2

[0030] This embodiment provides a temporary underground gangue silo loading and unloading device. The main difference from Embodiment 1 is that, in this embodiment, to increase the support capacity, a support leg 12 is provided on the lower surface of the telescopic gangue receiving plate. Specifically, the support leg 12 is disposed on the fixed plate 14.

[0031] Example 3

[0032] This embodiment provides a temporary underground gangue bin loading and unloading device. The main difference from Embodiment 1 is that in this embodiment, a pair of telescopic gangue collecting plates are symmetrically arranged with the center line of the bin unloading scraper 8 as the axis of symmetry.

[0033] Example 4

[0034] This embodiment provides a temporary underground gangue bin loading and unloading device. The main difference from Embodiment 1 is that, in this embodiment, to facilitate the falling of gangue, a plow-type unloader 5 is slidably installed above the inlet conveyor belt 7. The plow-type unloader 5 is used to push the gangue 10 on the inlet conveyor belt 7 onto the outlet scraper conveyor 8. To facilitate sliding, a slide rail 6 is provided on the top of the temporary underground gangue bin 4 for the plow-type unloader 5 to slide on.

[0035] Specifically, the operating steps for loading and unloading gangue using the underground temporary gangue bin loading and unloading equipment provided by this utility model are as follows:

[0036] Gangue loading: The hydraulic cylinder retracts to its shortest length, the outriggers 12 touch the ground, and the telescopic gangue collecting plates on both sides of the scraper conveyor 8 are opened to their maximum angle. The control center operates the plow-type unloader 5 of the loading conveyor 7 to move to the tail of the scraper conveyor, that is, the innermost part of the underground temporary gangue bin 4. The gangue falls to a safe and permissible height, and then the plow-type unloader is moved, gradually moving towards the head of the scraper conveyor until the entire underground temporary gangue bin is filled with gangue, and the loading is completed.

[0037] Gangue Unloading: During the gaps in underground raw coal transportation, when gangue is allowed to unload, the unloading scraper conveyor transports the portion of gangue close to the scraper blades outwards and unloads it onto the first belt conveyor transport roadway 1. After the gangue at the bottom is removed, the telescopic gangue receiving plate is gradually retracted via the control center, or the telescopic gangue receiving plate is vibrated and retracted using hydraulic cylinders, allowing the gangue above the unloading scraper conveyor 8 to fall smoothly into the central trough 11 of the unloading scraper conveyor, and then be carried away by the scraper chain until all the gangue in the underground temporary gangue bin 4 is transported out of the underground temporary gangue bin 4. At the same time, the extension of the hydraulic cylinder, which drives the movable plate to extend, can also support gangue and coal blocks that are prone to falling off the sidewall of the roadway. Once all the gangue in the underground temporary gangue bin 4 has been transported out, the top conveyor belt 7 can then remove the plow-type coal unloader 5, allowing the gangue to be directly unloaded into the conveyor belt transport roadway, bypassing the underground temporary gangue bin 4.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A temporary underground gangue bin loading and unloading device, characterized in that: It includes an inbound conveyor belt, an outbound scraper conveyor, and a pair of telescopic waste collection plates; The inlet conveyor belt is installed on top of the underground temporary gangue bin and is used to transport gangue to the outlet scraper conveyor. The scraper conveyor is located at the bottom of the underground temporary gangue bin and is used to store and transport gangue. A pair of telescopic gangue collecting plates are flip-mounted on both sides of the discharge scraper to carry gangue and gather it toward the center of the discharge scraper.

2. The underground temporary gangue bin feeding and discharging equipment according to claim 1, characterized in that: The telescopic waste collection plate includes a fixed plate hinged to the discharge scraper conveyor. A movable plate is slidably disposed at one end inside the fixed plate. A hydraulic cylinder is connected to the lower part of the movable plate. The hydraulic cylinder is used to lift the telescopic waste collection plate and push the movable plate to slide on the fixed plate.

3. The underground temporary gangue bin feeding and discharging equipment according to claim 1 or 2, characterized in that: The lower surface of the telescopic coal collection plate is provided with support legs.

4. The underground temporary gangue bin feeding and discharging equipment according to claim 1, characterized in that: The pair of telescopic waste collection plates are symmetrically arranged with the center line of the discharge scraper as the axis of symmetry.

5. The underground temporary gangue bin feeding and discharging equipment according to claim 1, 2, or 4, characterized in that: A plow-type coal unloader is also slidably installed above the inlet conveyor belt, which is used to push the gangue on the inlet conveyor belt onto the outlet scraper conveyor.

6. The underground temporary gangue bin feeding and discharging equipment according to claim 5, characterized in that: The top of the underground temporary gangue bin is equipped with a slide rail for the plow-type coal unloader to slide.

7. The underground temporary gangue bin feeding and discharging equipment according to claim 1, 2, or 4, characterized in that: The conveyor belt for entering the storage bin is installed on top of the temporary gangue storage bin underground via steel cables.

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