Gangue blocking device facilitating coal clearing, gangue blocking stack type support and supporting system

Abstract

The utility model provides a gangue blocking device convenient to clean coal, a gangue blocking stack type support and a supporting system, which are arranged beside a scraper conveyer and comprise a gangue blocking plate, a pair of mounting seats, a pair of telescopic rods and a pair of push-pull oil cylinders, the gangue blocking plate is located between the pair of mounting seats, the gangue blocking plate is movably connected with the push-pull oil cylinders and the telescopic rods, the push-pull oil cylinders are arranged at the tops of the mounting seats, the telescopic rods are arranged on the mounting seats in a sliding mode, and a plurality of mounting holes are formed in the tops of the mounting seats. According to the waste rock blocking device facilitating coal cleaning, the waste rock blocking stack type support and the supporting system, coal briquettes can be effectively prevented from falling into the stack type support, meanwhile, accumulated coal between a conveyor and the stack type support is rapidly cleaned during the end mining period of a working face, the labor intensity of workers is effectively reduced, and the coal cleaning efficiency and the operation safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine support equipment, specifically to a coal-clearing retaining device and a coal-clearing stack support and support system. Background Technology

[0002] During the final stage of longwall mining, a large amount of coal falls into the stacked supports or the gap between the stacked supports and the scraper conveyor after the coal machine cuts through the last piece of coal. Therefore, it is usually necessary to lay a mesh on top of the face supports, and then clean the coal blocks in the retreat passage and between the stacked supports to allow for operations such as support erection and beam lifting before the equipment can be withdrawn. Currently, after the final stage of mining, the cleaning of coal accumulated from the front of the scraper conveyor's shovel plate to the stacked supports is mainly done manually, which is inefficient, labor-intensive, and poses safety risks.

[0003] Utility model patent CN219711511U discloses a coal cleaning device for the final stage of fully mechanized coal mining faces. The device includes a frame, guide shoes, and support shoes. The support shoes are used to support the upper surface of the shovel plate of the scraper conveyor. The guide shoes are used to slide and guide the scraper conveyor with the pins. The device moves relative to the scraper conveyor when pushed or pulled by the coal mining machine. One end of the telescopic frame extends into the frame and slides in a forward and backward direction with the frame. The shoveling mechanism is located on the telescopic frame and includes a plow-shaped shovel head and a connecting plate. One end of the connecting plate is hinged to the telescopic frame, and the other end is connected to the plow-shaped shovel head. The telescopic cylinder drives the telescopic frame and the shoveling mechanism to move forward and backward. The lifting cylinder drives the plow-shaped shovel head to lift or lower. The plow-shaped shovel head is used to turn over the accumulated coal and throw it into the chute of the scraper conveyor. The coal cleaning device at the end of the longwall mining face can quickly, safely and efficiently complete the coal cleaning work at the end of the longwall mining face through mechanical means. However, the coal cleaning device at the end of the longwall mining face is a passive coal cleaning device and does not have the function of actively blocking gangue. Utility Model Content

[0004] To prevent coal chunks from entering the stacked support and to facilitate the rapid removal of accumulated coal in conjunction with the coal mining machine, thereby addressing the issues of high labor intensity, low efficiency, numerous safety hazards, and poor air quality in coal cleaning, the technical solution adopted by this utility model is: a coal-cleaning device that facilitates coal cleaning, installed on one side of the scraper conveyor, comprising a coal-cleaning plate, a pair of mounting seats, a pair of telescopic rods, and a pair of push-pull cylinders;

[0005] The baffle plate is located between a pair of mounting seats. The baffle plate is movably connected to the push-pull cylinder and the telescopic rod, respectively. The baffle plate is used to prevent coal blocks from scattering and to push the coal blocks to the side of the scraper conveyor.

[0006] The push-pull cylinders are respectively installed on the top of the mounting base and are used to push the baffle plate to move;

[0007] The telescopic rods are slidably mounted on the mounting bases to support and guide the rock baffles;

[0008] The top of the mounting base is provided with several mounting holes.

[0009] Based on the above, in order to facilitate movable connection, the telescopic rod is respectively provided with an upper connector and a lower connector. The lower connector is rotatably connected to the end of the telescopic rod and is hinged to the lower part of the baffle plate.

[0010] The upper connector is fixedly installed at the outer end of the telescopic rod. One end of the upper connector is connected to the telescopic end of the push-pull cylinder, and the other end of the upper connector is movably connected to a directional cylinder. The directional cylinder is hinged to the upper part of the baffle plate.

[0011] Based on the above, the lower connector is movably connected to the end of the telescopic rod via a pin, and the axis of the pin is perpendicular to the center line of the push-pull cylinder.

[0012] Based on the above, in order to provide support during the coal pushing process, a top support column is provided on the side of the mounting base away from the rock baffle plate, and the top support column is arranged perpendicular to the mounting base.

[0013] Based on the above, in order to improve the coal pushing capacity, the bottom of the rock-blocking plate is equipped with several shovel teeth.

[0014] Based on the above, in order to increase the coal blocking range, the length of the coal blocking plate is greater than or equal to the spacing between a pair of mounting seats.

[0015] This utility model also provides a gangue-blocking support, including a support top beam, a support base, a column and a shield beam. The column and the shield beam are respectively connected between the support top beam and the support base. The two ends of the support base are detachably connected to the aforementioned gangue-blocking device for easy coal cleaning.

[0016] Based on the above, one end of the bracket base is detachably connected to one of the mounting seats, and the other end of the bracket base is detachably connected to the other mounting seat. The bracket base is connected to one side of the rock baffle and the two are arranged in parallel.

[0017] This utility model also provides a support system, including several outer stack-type supports, several working face supports, several of the above-mentioned rock-blocking stack-type supports, and a top protective net;

[0018] Several of the aforementioned gangue-blocking stack-type supports are arranged side by side on one side of the scraper conveyor, and several of the aforementioned outer stack-type supports are arranged side by side on the outer side of the gangue-blocking stack-type supports.

[0019] Several of the aforementioned working face supports are arranged side by side on the other side of the scraper conveyor;

[0020] The top protective net is installed between the top of the working face support and the top of the rock-blocking support; the channel between the rock-blocking support and the scraper conveyor forms a retraction channel.

[0021] Based on the above, in order to improve the stability of the support, several of the outer stack type supports and several of the retaining stack type supports are correspondingly arranged inside and outside.

[0022] This utility model has substantial features and advancements compared to existing technologies. Specifically, the coal-clearing-facilitating rock-blocking device, rock-blocking stack-type support, and support system provided by this utility model allow for the pre-arrangement of two rows of stack-type supports on the outer side of the final mining line for roof support when the working face advances to near the end of coal mining. A retreat channel is left near the middle of the working face to improve retreat efficiency. Simultaneously, by configuring a rock-blocking mechanism on the side of the stack-type support near the retreat channel and installing the rock-blocking mechanism at both ends of the stack-type support base, and hinged to the stack-type support base through mounting holes on the mounting base, the pusher distance can be adjusted by changing the installation position, thereby improving the stability and adaptability of the system.

[0023] Furthermore, the rock-blocking mechanism, in conjunction with the side guard plate installed on the top beam, can effectively prevent coal blocks from entering the rock-blocking support, reducing the amount of coal cleaning work required.

[0024] Furthermore, the coal-blocking mechanism is designed to consist of a mounting base, telescopic rod, coal-blocking plate, connector, top support column, push-pull cylinder, directional cylinder, hydraulic control system, and connecting parts. The extension and retraction of the push-pull cylinder can control the forward and backward movement of the coal-blocking plate, and the extension and retraction of the directional cylinder can control the depth and direction of the shovel teeth on the coal-blocking plate, thereby improving the coal cleaning efficiency.

[0025] Furthermore, when the working face advances to the final mining section of the coal mine, the roof between the top beams of the working face support and the stacked support is covered with mesh and anchored with bolts and cables to ensure the safety of the lower operations.

[0026] Therefore, the coal-clearing blocking device, the blocking stack support, and the support system can effectively prevent coal blocks from falling into the stack support. At the same time, it enables the rapid clearing of coal accumulation between the conveyor and the stack support during the final mining period of the working face, effectively reducing the labor intensity of workers and greatly improving coal clearing efficiency and operational safety. Attached Figure Description

[0027] Figure 1This is a side view of the coal-clearing retaining device and the retaining stack support and support system provided by this utility model.

[0028] Figure 2 This is a schematic diagram of the top structure of the coal-clearing retaining device in the coal-clearing stack support and support system provided by this utility model.

[0029] Figure 3 This is a schematic diagram of the rear structure of the coal-clearing retaining device and the retaining stack support and support system provided by this utility model.

[0030] Figure 4 This is a side view of the gangue-blocking device and gangue-blocking stack support system provided by this utility model for easy coal cleaning.

[0031] Figure 5 This is a schematic diagram of the structure of the coal-blocking device and the coal-blocking stack support and support system provided by this utility model in the retracted state.

[0032] Figure 6 This is a side view of the support system structure in the coal-clearing device, coal-blocking stack support, and support system provided by this utility model.

[0033] Figure 7 This is a schematic diagram of the overall structure of the support system in the coal-clearing device, the coal-blocking stack support, and the support system provided by this utility model.

[0034] In the diagram: 1. Ventilation tunnel; 2. Outer stack-type support; 3. Rock-block stack-type support; 4. Working face support; 5. Scraper conveyor; 6. Top protective net; 7. Coal mining machine; 8. Roof support column; 9. Rock-block plate; 10. Retreat passage; 11. Working face passage; 12. Mounting base; 13. Push-pull cylinder; 14. Upper connector; 15. Telescopic rod; 16. Shovel teeth; 17. Directional cylinder; 18. Lower connector; 19. Clamp; 20. Mounting hole; 21. Support top beam; 22. Support base; 23. Column; 24. Shield beam. Detailed Implementation

[0035] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0036] Example 1

[0037] This embodiment provides a coal-blocking device for easy coal cleaning, such as... Figure 1 , Figure 2 , Figure 3As shown, it is set on one side of the scraper conveyor 5 and includes a baffle plate 9, a pair of mounting seats 12, a pair of telescopic rods 15 and a pair of push-pull cylinders 13.

[0038] The baffle plate 9 is located between a pair of mounting seats 12. The baffle plate 9 is movably connected to the push-pull cylinder 13 and the telescopic rod 15, respectively. The baffle plate 9 is used to prevent coal blocks from scattering and to push the coal blocks to the side of the scraper conveyor 5.

[0039] The push-pull cylinders 13 are respectively disposed on the top of the mounting base 12, and are used to push the baffle plate 9 to move. The telescopic rods 15 are respectively slidably disposed on the mounting base 12, and are used to support and guide the baffle plate 9. The top of the mounting base 12 is provided with a plurality of mounting holes 20.

[0040] In this embodiment, for ease of connection, the telescopic rod 15 is provided with an upper connector 14 and a lower connector 18. The lower connector 18 is rotatably connected to the end of the telescopic rod 15 and is hinged to the lower part of the baffle plate 9.

[0041] The upper connector 14 is fixedly disposed at the outer end of the telescopic rod 15. One end of the upper connector 14 is connected to the telescopic end of the push-pull cylinder 13. The other end of the upper connector 14 is movably connected to a directional cylinder 17, which is hinged to the upper part of the baffle plate 9.

[0042] In order to provide support during the coal pushing process, a top support column 8 is provided on the side of the mounting base 12 away from the rock baffle 9 by means of a clamp 19, and the top support column 8 is set perpendicular to the mounting base 12.

[0043] Example 2

[0044] This embodiment provides a coal-blocking device that facilitates coal cleaning. The main difference from Embodiment 1 is that in this embodiment, the lower connector 18 is movably connected to the end of the telescopic rod 15 via a pin, and the axis of the pin is perpendicular to the center line of the push-pull cylinder 13.

[0045] Example 3

[0046] This embodiment provides a coal-clearing blocking device. The main difference from Embodiment 1 is that, in order to improve the coal pushing capacity, the bottom of the blocking plate 9 is equipped with several shovel teeth 16.

[0047] Example 4

[0048] This embodiment provides a coal-blocking device that facilitates coal removal. The main difference from Embodiment 1 is that, in order to increase the coal-blocking range, the length of the coal-blocking plate 9 is greater than or equal to the distance between a pair of mounting seats 12.

[0049] Example 5

[0050] This embodiment provides a rock-blocking stack support, such as... Figure 4 and Figure 5 As shown, the system includes a support top beam 21, a support base 22, a column 23, and a shield beam 24. The column 23 and the shield beam 24 are respectively connected between the support top beam 21 and the support base 22. The two ends of the support base 22 are detachably connected to a coal-clearing barrier device provided in any of embodiments 1 to 4.

[0051] Specifically, one end of the bracket base 22 is detachably connected to one of the mounting seats, and the other end of the bracket base is detachably connected to the other mounting seat. The bracket base is connected to one side of the baffle plate, and the two are arranged parallel to each other. More specifically, both ends of the bracket base 22 are connected to the mounting holes 20 on the top of the mounting seat 12 by bolts.

[0052] Example 6

[0053] This embodiment provides a support system, such as Figure 6 and Figure 7 As shown, it includes several outer stack-type supports 2, several working face supports 4, several retaining stack-type supports 3 provided in embodiment 5, and a top protective net 6.

[0054] Specifically, several of the aforementioned rock-blocking stack supports 3 are arranged side-by-side on one side of the scraper conveyor 5. Several of the aforementioned outer stack supports 2 are arranged side-by-side on the outer side of the rock-blocking stack supports 3. Several of the aforementioned working face supports 4 are arranged side-by-side on the other side of the scraper conveyor 5.

[0055] Specifically, the top protective net 6 is installed between the top of the working face support 4 and the top of the rock-blocking support 3. The channel between the rock-blocking support 3 and the scraper conveyor 5 forms a retraction channel 10. The scraper conveyor 5 and the working face support 4 are installed in the working face channel 11. A coal mining machine 7 is also installed in the working face channel 11, and one end of the working face channel 11 is connected to the ventilation roadway 1.

[0056] To improve support stability, several outer stack-type supports 2 and several retaining rock stack-type supports 3 are arranged correspondingly inside and outside.

[0057] Specifically, the operating steps for using this easy-to-clean coal blocking device, along with the blocking stack support and support system, for support, blocking, and coal cleaning are as follows:

[0058] When the working face advances to near the end of mining, two rows of stacked supports are pre-arranged on the outer side of the final mining line for roof support. One row of stacked supports, closer to the working face, is equipped with a rock-blocking device and is designated as the rock-blocking stacked support 3. The other row is a regular stacked support, designated as the outer stacked support 2. A retreat channel 10 is left near the middle of the working face to improve retreat efficiency. When the working face advances to the final mining position, a top protective net 6 is laid on the roof between the top of the working face supports and the stacked supports, and anchor bolts and cables are installed for support to ensure the safety of lower-level operations. Coal cleaning operations then commence.

[0059] During coal cleaning operations, first push the scraper conveyor 5 straight, ensuring that the scraper conveyor 5 is 1m to 1.5m away from the rock-block support, and align the working face support 4. Then, control the coal mining machine 7 to move along the working face, cut through the bottom plate, and load coal.

[0060] Then, the top support column 8 on the rock-blocking support 3 is extended to support the top plate. The push-pull cylinder 13 on the rock-blocking support 3 is extended, and the rock-blocking plate 9 is used to push the falling coal to the side of the scraper conveyor 5. If necessary, the shovel depth and direction can be adjusted by the directional cylinder 17, and then the rock-blocking plate 9 is retracted.

[0061] Subsequently, the coal mining machine 7 is moved along the working face to load the coal pushed over by the shovel onto the scraper conveyor 5 for transport. If the rock retainer 9 is far from the scraper conveyor after it extends, the installation position of the rock retainer support 3 can be moved, and the shovel can continue to load coal. Repeating the above steps will clear most of the coal.

[0062] 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 gangue blocking device for facilitating coal cleaning, which is arranged beside a scraper conveyor, characterized in that: The device comprises a baffle, a pair of mounting seats, a pair of telescopic rods and a pair of push-pull oil cylinders. The baffle is located between the pair of mounting seats and is movably connected with the push-pull oil cylinders and the telescopic rods respectively. The push-pull oil cylinders are arranged on the top of the mounting seats and are used to push the baffle to move. The telescopic rods are slidably arranged on the mounting seats and are used to support and guide the baffle. The mounting seats are provided with a plurality of mounting holes on the top.

2. The gangue blocking device facilitating clean coal of claim 1, characterized in that: The telescopic rods are provided with upper and lower connecting heads respectively. The lower connecting head is rotatably connected with the end of the telescopic rod and is hingedly connected with the lower part of the baffle.

3. The gangue blocking device facilitating clean coal of claim 2, characterized in that: The upper connecting head is fixedly arranged on the outer end of the telescopic rod and is connected with the telescopic end of the push-pull oil cylinder.

4. The gangue blocking device facilitating clean coal of claim 1 or 2 or 3, characterized in that: The lower connecting head is movably connected with the end of the telescopic rod through a pin shaft.

5. The gangue blocking device facilitating clean coal of claim 1 or 2 or 3, characterized in that: The mounting seat is provided with a gable column on the side away from the baffle.

6. The gangue blocking device facilitating clean coal of claim 5, characterized in that: The baffle is provided with a plurality of digging teeth on the bottom.

7. A gangable support comprising a support top beam, a support base, a post and a canopy beam, characterized in that: The length of the baffle is greater than or equal to the distance between the pair of mounting seats.

8. The stave stack support of claim 7, wherein: The stand column and the shield beam are connected between the support top beam and the support base.

9. A support system characterized by: One end of the support base is detachably connected with one of the mounting seats and the other end is detachably connected with the other mounting seat. The support base is connected on one side of the baffle and is parallel to the baffle. The device comprises a plurality of outside shed supports, a plurality of working face supports, a top protection net and a plurality of baffle sheds according to claim 7 or 8. The plurality of baffle sheds are arranged side by side on one side of the scraper conveyor and the plurality of outside shed supports are arranged side by side on the outside of the baffle sheds.

10. The support system of claim 9, wherein: The plurality of working face supports are arranged side by side on the other side of the scraper conveyor. The top protection net is arranged between the top of the working face supports and the top of the baffle sheds. The channel between the baffle sheds and the scraper conveyor forms a retreat channel. The plurality of outside shed supports and the plurality of baffle sheds are arranged in correspondence inside and outside.

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