Fully-mechanized coal mining paste filling hydraulic support suitable for working faces with different mining heights

Abstract

The utility model discloses a fully-mechanized coal mining paste filling hydraulic support suitable for working faces with different mining heights, which relates to the technical field of hydraulic supports and comprises a top beam, a tail beam is rotatably connected to one side of the top beam, and the top beam and the tail beam have the same internal structure; the top beam is composed of a first top plate and a second top plate, the first top plate and the second top plate are slidably connected through a connecting assembly, a groove is formed in the bottom face of the first top plate, a rotating plate is rotatably connected into the groove, and a driving assembly is installed in the first top plate and is in transmission connection with the rotating plate. The hydraulic support can better adapt to working face environments with different mining heights by adjusting the actions of the top beam structure and the rotating plate, the adaptability to different geological conditions and mining height changes is improved, stable support is provided for fully-mechanized coal mining paste filling operation, and safety and high efficiency of coal mining operation are guaranteed; the driving assembly can control the rotating angle of the rotating plate, so that the device is suitable for working faces with different mining heights and wide in application range.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology, and in particular to a hydraulic support for filling paste in fully mechanized mining faces with different mining heights. Background Technology

[0002] Backfilling mining, as a green mining technology in coal mines, primarily aims to relieve coal pressure caused by coal seams, protect the ecological environment of the mining area, and extend the service life of the mine. Fully mechanized mining faces require the use of hydraulic supports during backfilling mining.

[0003] Existing hydraulic supports have limited functionality and can only be used in specific coal mines. They cannot adapt to different mining faces and have a limited application range. Replacing hydraulic supports wastes a lot of time and delays project progress.

[0004] Therefore, this utility model provides a hydraulic support for filling fully mechanized mining paste that is adaptable to working faces with different mining heights, in order to solve the problems existing in the prior art. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a hydraulic support for filling fully mechanized mining paste into working faces with different mining heights, including a top beam, a tail beam rotatably connected to one side of the top beam, and the internal structure of the top beam and the tail beam being the same; the top beam is composed of a first top plate and a second top plate, the first top plate and the second top plate being slidably connected by a connecting assembly, a groove is provided on the bottom surface of the first top plate, a rotating plate is rotatably connected in the groove, a driving assembly is installed in the first top plate, and the driving assembly is drivingly connected to the rotating plate.

[0006] Preferably, the connecting assembly includes a plurality of connecting rods, one end of which extends into the first top plate and is fixedly connected to the first top plate, and the other end of which extends into the second top plate and is fixedly connected to a slider. Hydraulic rods are symmetrically arranged on the side of the slider away from the connecting rods, and the output end of the hydraulic rods is fixedly connected to the slider.

[0007] Preferably, a groove is provided in the second top plate, and the slider is located in the groove and slidably connected to the groove.

[0008] Preferably, the drive assembly includes a motor, the output shaft of which is fixedly connected to a worm gear, the worm gear meshing with a worm wheel, the worm wheel being driven by a first bevel gear, and the first bevel gear being driven by the rotating plate.

[0009] Preferably, a rotating shaft is rotatably connected within the groove, the rotating shaft is fixedly connected to one side of the rotating plate, and the end of the rotating shaft extends into the first top plate and is fixedly connected to the first bevel gear.

[0010] Preferably, a connecting shaft is fixedly connected to the center of the worm gear, and a second bevel gear is fixedly connected to the end of the connecting shaft away from the worm gear, the second bevel gear meshing with the first bevel gear.

[0011] Preferably, a pair of support plates are provided inside the first top plate, and the connecting shaft passes through the support plates and is rotatably connected to the support plates.

[0012] Preferably, the bottom of the top beam and the bottom of the tail beam are respectively connected to jacks, and the bottom of the jacks is fixedly connected to a base.

[0013] This utility model discloses the following technical effects: The top beam and tail beam of this utility model have identical internal structures, and the top beam consists of a first top plate and a second top plate slidably connected by a connecting assembly. A rotating plate, which can be driven to rotate by a drive assembly, is installed inside the first top plate. This hydraulic support structure design allows for better adaptation to working face environments at different mining heights by adjusting the top beam structure and the movement of the rotating plate, improving adaptability to different geological conditions and changes in mining height. It provides stable support for fully mechanized paste filling operations, ensuring the safety and efficiency of coal mining operations. The drive assembly can control the rotation angle of the rotating plate, thus making it suitable for working faces at different mining heights and having a wide range of applications. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the connecting component of this utility model;

[0017] Figure 3 This is an assembly drawing of the rotating plate and the first top plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the drive component of this utility model;

[0019] In the diagram: 1. Top beam; 2. Tail beam; 3. First top plate; 4. Second top plate; 5. Jack; 6. Base; 7. Connecting rod; 8. Slide groove; 9. Sliding block; 10. Hydraulic rod; 11. Rotating shaft; 12. Rotating plate; 13. Groove; 14. First bevel gear; 15. Second bevel gear; 16. Connecting shaft; 17. Support plate; 18. Motor; 19. Worm gear; 20. Worm wheel. Detailed Implementation

[0020] Paste backfilling technology is a key method in modern green coal mining. It involves mixing waste materials such as gangue and fly ash with cementing materials to form a paste, which is then filled into the goaf to control surface subsidence. The hydraulic support for paste backfilling in fully mechanized coal mining is the core equipment of this technology, and it must simultaneously meet the dual requirements of roof support and isolation of the backfilling work space. The support needs to provide real-time roof support during coal mining and quickly construct a sealed isolation wall during the backfilling stage. During paste backfilling, the support must withstand the lateral pressure of the backfill material and the dynamic load of the roof to ensure operational safety. Modern supports integrate an electro-hydraulic control system, which can remotely monitor the support status, automatically adjust support parameters, and achieve programmed control of the backfilling process. Traditional supports suffer from leakage of the backfill material due to structural gaps, affecting the backfilling quality.

[0021] Hydraulic supports adapted to different mining heights need to be selected based on coal seam thickness, geological conditions, and mining technology. Common types include shield-type, support-shield type, low-level top coal caving, and backfilling hydraulic supports: Shield-type hydraulic supports: Applicable mining height range: Generally between 2 and 7 meters, especially suitable for thin to medium-thick coal seams. Structural features: Contains high-strength steel and advanced welding technology, with stable structure, strong support force, and flexible adjustment of mining height. Advantages: Strong adaptability to working faces, good safety, high support resistance, and strong protective performance. Application scenarios: Suitable for areas with complex geological conditions or large variations in coal seam thickness, ensuring the safety and stability of the mining process. Support-shield type hydraulic supports: Applicable mining height range: Suitable for extremely thin to medium-thick coal seams, designed to cover mining height requirements of 1.5 to 5 meters. Structural features: High support strength, reasonable overall stress state and distribution, with high performance, high reliability, good stability, and large support capacity. Advantages: Designed with high-strength, lightweight materials, reducing space occupation, good durability, and high reliability. Application Scenarios: Particularly suitable for working faces with hard or dense roofs, it is the best choice for fully mechanized mining faces in thin coal seams. Low-position Top Coal Caving Hydraulic Support: Applicable Mining Height Range: Mainly used in medium-thick coal seam top coal caving working faces, meeting the dual requirements of mining height and coal caving. Structural Features: Good support effect, high degree of intelligence, equipped with electro-hydraulic control, monitoring, and data acquisition systems. Advantages: Enables "intelligent" and "less manned" mining in fully mechanized mining faces, improving mining efficiency and safety. Application Scenarios: Suitable for medium-thick coal seam mining where resource recovery needs to be improved. Filling Mining Hydraulic Support: Applicable Mining Height Range: Adaptable to high mining height filling requirements. Structural Features: Possesses dual functions of filling and support, adopts electro-hydraulic control technology, improving filling effect and mining efficiency. Advantages: Effectively reduces surface deformation, protects the ecological environment, and improves coal resource recovery rate. Application Scenarios: Suitable for mining areas requiring control of surface subsidence and protection of surface buildings. High Mining Height Hydraulic Support: Applicable Mining Height Range: Specifically designed for thick coal seam mining. Structural Features: Employs high-strength columns and a large-space design, equipped with an electro-hydraulic control system for automated operation. Advantages: Improves unit output and efficiency, meeting the high standards required for high-seam mining faces. Application Scenarios: Suitable for mining areas with thick coal seams requiring efficient extraction.

[0022] Hydraulic supports for paste backfilling in fully mechanized coal mining are the core technology, and their technological development directly affects the efficiency and safety of backfilling mining. In the future, with the in-depth application of intelligent and lightweight technologies, supports will be better adapted to complex geological conditions, promoting the transformation of the coal industry towards green, efficient, and safe operations.

[0023] The technical solutions of the present utility model will be clearly and completely described 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 embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figures 1-4 As shown, this embodiment provides a hydraulic support for filling paste in fully mechanized mining faces with different mining heights. It includes a top beam 1, a tail beam 2 rotatably connected to one side of the top beam 1, and the top beam 1 and the tail beam 2 have the same internal structure. The top beam 1 is composed of a first top plate 3 and a second top plate 4. The first top plate 3 and the second top plate 4 are slidably connected by a connecting component. A groove 13 is provided on the bottom surface of the first top plate 3. A rotating plate 12 is rotatably connected in the groove 13. A driving component is installed in the first top plate 3, and the driving component is connected to the rotating plate 12 in a transmission connection.

[0026] In this invention, the top beam 1 and tail beam 2 have the same internal structure. The top beam 1 consists of a first top plate 3 and a second top plate 4 slidably connected by a connecting assembly. A rotating plate 12, which can be driven to rotate by a drive assembly, is installed inside the first top plate 3. This hydraulic support structure allows for better adaptation to working face environments at different mining heights by adjusting the structure of the top beam 1 and the movement of the rotating plate 12. This improves adaptability to different geological conditions and changes in mining height, providing stable support for fully mechanized paste filling operations and ensuring the safety and efficiency of coal mining operations. The drive assembly can control the rotation angle of the rotating plate 12, thus adapting to working faces at different mining heights and having a wide range of applications.

[0027] The design is further optimized by including several connecting rods 7. One end of each connecting rod 7 extends into and is fixedly connected to the first roof plate 3, while the other end extends into and is fixedly connected to a slider 9. Hydraulic rods 10 are symmetrically arranged on the side of the slider 9 away from the connecting rods 7, and the output end of each hydraulic rod 10 is fixedly connected to the slider 9. The extension and retraction of the hydraulic rods 10 can move the slider 9 within the second roof plate 4, thereby achieving relative sliding between the first and second roof plates 3 and 4. This structure allows the length of the roof beam 1 to be flexibly adjusted according to the actual mining height requirements, enhancing the adaptability of the hydraulic support to working faces with different mining heights, and providing convenient operation and high adjustment accuracy.

[0028] Further optimization involves creating a groove 8 within the second roof plate 4, with the slider 9 located within and slidably connected to it. The groove 8 provides a track for the movement of the slider 9, ensuring its stability and directionality. This makes the relative sliding between the first roof plate 3 and the second roof plate 4 smoother and more accurate, preventing swaying or deviation. Consequently, it ensures the overall stability and reliability of the hydraulic support structure, better adapting to changes in the coal mining face.

[0029] Further optimization of the scheme involves a drive component including a motor 18. The output shaft of the motor 18 is fixedly connected to a worm gear 19, which meshes with a worm wheel 20. The worm wheel 20 is driven by a first bevel gear 14, which is then connected to a rotating plate 12. The motor 18 drives the worm gear 19 to rotate via its output shaft. The worm gear 19 meshes with the worm wheel 20, thereby driving the worm wheel 20 to rotate. The worm wheel 20 then drives the first bevel gear 14, ultimately achieving a transmission connection with the rotating plate 12. This drive method offers advantages such as smooth transmission and good self-locking performance. It can precisely control the rotation angle and speed of the rotating plate 12, meeting the needs of the rotating plate 12's movement under different working conditions and improving the automation level and operational accuracy of the hydraulic support.

[0030] A further optimized design incorporates a rotating shaft 11 rotatably connected within the groove 13. The rotating shaft 11 is fixedly connected to one side of the rotating plate 12, and its end extends into the first top plate 3 and is fixedly connected to the first bevel gear 14. This connection allows the rotation of the first bevel gear 14 to drive the rotating shaft 11, which in turn drives the rotating plate 12. This structural design is simple, reliable, and highly efficient, accurately transmitting power from the drive assembly to the rotating plate 12, enabling its flexible rotation to adapt to different working surface requirements.

[0031] In a further optimized design, a connecting shaft 16 is fixedly connected to the center of the worm gear 20. A second bevel gear 15 is fixedly connected to the end of the connecting shaft 16 furthest from the worm gear 20, and the second bevel gear 15 meshes with the first bevel gear 14. This structure transmits the rotation of the worm gear 20 to the second bevel gear 15 via the connecting shaft 16, and the meshing of the second bevel gear 15 with the first bevel gear 14 further transmits power. This makes the transmission of the entire drive assembly smoother and more reliable, enabling precise control of the rotation of the rotating plate 12 and ensuring the stable operation of the hydraulic support under different working conditions.

[0032] In a further optimized design, a pair of support plates 17 are installed within the first top plate 3. The connecting shaft 16 passes through the support plates 17 and is rotatably connected to them. The support plates 17 provide support and positioning for the connecting shaft 16, ensuring its stability and coaxiality during rotation. This reduces wear and damage to the transmission components caused by the shaking or misalignment of the connecting shaft 16, extends the service life of the hydraulic support, and improves the reliability and stability of the entire drive system.

[0033] The design was further optimized by installing jacks 5 at the bottom of both the top beam 1 and the tail beam 2, with bases 6 fixedly connected to the bottom of each jack 5. The jacks 5 allow the hydraulic support to be height-adjusted according to the actual conditions of the working face, adapting to different mining height requirements. The bases 6 provide a stable support foundation for the hydraulic support, increasing the contact area between the support and the ground, improving the stability and load-bearing capacity of the support, and ensuring that the hydraulic support can reliably support the roof during coal mining, thus guaranteeing operational safety.

[0034] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A fully mechanized paste backfill hydraulic support suitable for different mining height working face, characterized in that: The system includes a top beam (1), a tail beam (2) which is rotatably connected to one side of the top beam (1), and the internal structure of the top beam (1) and the tail beam (2) is the same. The top beam (1) is composed of a first top plate (3) and a second top plate (4), which are slidably connected by a connecting component. The bottom surface of the first top plate (3) is provided with a groove (13), and a rotating plate (12) is rotatably connected in the groove (13). A driving component is installed in the first top plate (3), and the driving component is connected to the rotating plate (12) in a transmission connection.

2. The fully-mechanized coal mining paste backfill hydraulic support for working faces of different heights according to claim 1, characterized in that: The connecting assembly includes several connecting rods (7). One end of the connecting rod (7) extends into the first top plate (3) and is fixedly connected to the first top plate (3). The other end of the connecting rod (7) extends into the second top plate (4) and is fixedly connected to a slider (9). A hydraulic rod (10) is symmetrically arranged on the side of the slider (9) away from the connecting rod (7). The output end of the hydraulic rod (10) is fixedly connected to the slider (9).

3. The fully-mechanized coal mining paste backfill hydraulic support for working faces of different heights according to claim 2, characterized in that: The second top plate (4) has a groove (8) inside, and the slider (9) is located inside the groove (8) and is slidably connected to the groove (8).

4. The fully-mechanized coal mining paste backfill hydraulic support for working faces of different heights according to claim 1, characterized in that: The drive assembly includes a motor (18), the output shaft of which is fixedly connected to a worm (19), the worm (19) meshing with a worm wheel (20), the worm wheel (20) being driven by a first bevel gear (14), and the first bevel gear (14) being driven by the rotating plate (12).

5. The fully-mechanized coal mining and paste backfill hydraulic support for working faces of different heights according to claim 4, characterized in that: A rotating shaft (11) is rotatably connected inside the groove (13). The rotating shaft (11) is fixedly connected to one side of the rotating plate (12). The end of the rotating shaft (11) extends into the first top plate (3) and is fixedly connected to the first bevel gear (14).

6. The hydraulic support for backfilling paste in fully mechanized mining faces adapted to different mining heights as described in claim 4, characterized in that: The worm gear (20) is fixedly connected to a connecting shaft (16) at its center. A second bevel gear (15) is fixedly connected to one end of the connecting shaft (16) away from the worm gear (20). The second bevel gear (15) meshes with the first bevel gear (14).

7. The fully-mechanized coal mining and paste backfill hydraulic support for working faces of different heights according to claim 6, characterized in that: A pair of support plates (17) are provided inside the first top plate (3), and the connecting shaft (16) passes through the support plate (17) and is rotatably connected to the support plate (17).

8. The fully-mechanized coal mining and paste backfill hydraulic support for working faces of different heights according to claim 1, characterized in that: The bottom of the top beam (1) and the tail beam (2) are respectively connected to jacks (5), and the bottom of the jacks (5) is fixedly connected to a base (6).

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