Spill plate structure of coal mining machine

Abstract

The utility model relates to the technical field of coal mining machines, and discloses a spillplate structure of a coal mining machine, which comprises a fixed seat, the fixed seat is connected with a supporting arm through a mounting component, the bottom end of the fixed seat is connected with a rotating rod in a sliding manner, the rotating rod is connected with a baffle through a supporting seat, the front end of the rotating rod is fixedly connected with a driven gear, and the driven gear is connected with a driving shaft. The right end of the driven gear is connected with a driving gear in a meshed mode, the driving gear is rotationally connected to the front side of the fixing base, a sliding groove is formed in the middle end of the front side of the fixing base, limiting grooves are formed in the top side and the bottom side of the inner wall of the sliding groove, and two positioning holes are formed in the right end of the rear side of the inner wall of the sliding groove. According to the utility model, the self-adaptive capability is high, the angle adjustment is accurate and convenient, and the angle of the spillplate can be accurately adjusted by virtue of the knob according to the angle change of the supporting arm. Meanwhile, installation and maintenance are easy, convenient and efficient, different from tradition, the installation assembly is easy to assemble and disassemble and convenient to maintain, replace and debug, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine technology, and in particular to a coal retaining plate structure for a coal mining machine. Background Technology

[0002] As a key piece of equipment in fully mechanized mining equipment, the coal mining machine evolved from the coal cutter. It integrates mechanical, electrical and hydraulic technologies to form a large and complex system. It works in a harsh environment, and once a failure occurs, it will cause the entire coal mining operation to be interrupted, resulting in huge economic losses. The coal mining machine is an important symbol of the mechanization and modernization of coal mine production. Mechanized coal mining can not only reduce the physical labor of workers and improve safety, but also achieve high output, high efficiency and low consumption. During the operation of the coal mining machine, in order to prevent coal blocks from splashing into the working components and affecting normal operation, the coal baffle plate came into being.

[0003] However, in actual use, it has been found that most existing coal retaining plates are fixed installation structures and cannot automatically adjust according to the angle changes of the coal mining machine support arm. In actual coal mining, coal seam conditions are complex and changeable, and the support arm needs to constantly change its angle to adapt to different mining needs. Coal retaining plates with fixed angles are difficult to cope with such changes, resulting in a significant decrease in the coal retaining effect when the support arm angle changes. Coal blocks are easily splashed out from the gap between the coal retaining plate and the coal mining face, which not only wastes coal resources but may also pose safety hazards to surrounding equipment and personnel.

[0004] In response to this technical problem, this application proposes a coal retaining plate structure for a coal mining machine. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a coal retaining plate structure for a coal mining machine. This structure achieves strong self-adaptability and precise and convenient angle adjustment. The angle of the coal retaining plate can be precisely adjusted using a knob according to changes in the support arm angle. Furthermore, installation and maintenance are simple and efficient. Unlike traditional methods, its installation components allow for easy assembly and disassembly, facilitating repair, replacement, and debugging, thus improving maintenance efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A coal retaining plate structure for a coal mining machine includes a fixed base, which is connected to a support arm via an installation assembly. A rotating rod is slidably connected to the bottom end of the fixed base, and the rotating rod is connected to the retaining plate via the support base. A driven gear is fixedly connected to the front end of the rotating rod, and a driving gear is meshed with the right end of the driven gear. The driving gear is rotatably connected to the front side of the fixed base. A sliding groove is provided at the middle of the front side of the fixed base. Limiting grooves are provided on the top and bottom sides of the inner wall of the sliding groove. Two positioning holes are provided on the right end of the rear side of the inner wall of the sliding groove. A slider is slidably connected inside the sliding groove. Limiting blocks are fixedly connected to the top and bottom of the slider, and the limiting blocks are slidably connected to the inner wall of the limiting groove. The slider is connected to the positioning holes via a positioning assembly.

[0008] Furthermore, a cutting wheel is rotatably connected to the top of the support arm.

[0009] Furthermore, the rear end of the rotating rod is threadedly connected to the inner wall of the support base.

[0010] Furthermore, a knob is fixedly connected to the front side of the drive gear, and the drive gear engages with the left end of the slider.

[0011] Furthermore, the mounting assembly includes a fixing block, which is fixedly connected to the middle of the right side of the support arm, and the fixing block is connected to the mounting hole via a fixing bolt.

[0012] Furthermore, the positioning component includes a pull rod, which is slidably connected to the right end of the slider, and a positioning pin is fixedly connected to the rear end of the pull rod, the size of which is adapted to the positioning hole.

[0013] Furthermore, the front end of the pull rod extends through the front side of the slider, and a pull ring is fixedly connected to the front side of the pull rod.

[0014] Furthermore, a spring is slidably connected to the outside of the pull rod, the front end of the spring is fixedly connected to the inner wall of the slider, and the rear end of the spring is fixedly connected to the front side of the positioning pin.

[0015] This utility model has the following beneficial effects:

[0016] This invention achieves strong self-adaptability, precise and convenient angle adjustment, and facilitates easy connection with the support arm through a unique installation component. While ensuring connection stability, it provides a basis for adjusting the angle of the coal retaining plate. The sliding connection between the rotating rod and the fixed seat, as well as the connection between the support seat and the retaining plate, combined with the gear transmission system and positioning component, enable the coal retaining plate to precisely adjust its own angle according to the angle change of the support arm by operating the knob.

[0017] This invention achieves simpler and more efficient installation and maintenance. Traditional coal retaining plates may be cumbersome to install and disassemble, consuming time and manpower. However, this coal retaining plate uses installation components, namely fixed blocks and fixed bolts, to connect the fixed base and the support arm, making the installation and disassembly process simple and convenient. In addition, the threaded connection between the rotating rod and the support base allows for easy separation and reconnection of related components when the retaining plate needs maintenance, replacement, or adjustment, greatly improving equipment maintenance efficiency. Attached Figure Description

[0018] Figure 1 This is a perspective view of a coal retaining plate structure for a coal mining machine according to the present invention.

[0019] Figure 2 This is a schematic diagram of the support base in the coal retaining plate structure of a coal mining machine proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the installation components in the coal retaining plate structure of a coal mining machine proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the positioning component in the coal retaining plate structure of a coal mining machine proposed in this utility model;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Fixed base; 2. Mounting assembly; 3. Support arm; 4. Cutting wheel; 5. Rotating rod; 6. Support base; 7. Baffle; 8. Driven gear; 9. Driving gear; 10. Knob; 11. Slide groove; 12. Slider; 13. Limit groove; 14. Limit block; 15. Positioning assembly; 16. Positioning hole; 201. Fixed block; 202. Mounting hole; 203. Fixing bolt; 1501. Pull rod; 1502. Positioning pin; 1503. Pull ring; 1504. Spring. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a coal retaining plate structure for a coal mining machine, including a fixed base 1. The fixed base 1 is connected to a support arm 3 via an installation component 2. This installation component 2 forms a stable connection between the coal retaining plate and the support arm 3, enabling the coal retaining plate to be reliably installed on the support arm 3. This ensures the stability of the coal retaining plate during coal mining and prevents it from easily loosening or falling off in complex mining environments. During installation, the fixed base 1 can be easily and accurately fixed to the support arm 3 via the installation component 2, improving installation efficiency and facilitating subsequent maintenance and replacement of the coal retaining plate. A rotating rod 5 is slidably connected to the bottom end of the fixed base 1. This sliding connection gives the rotating rod 5 the ability to move flexibly on the fixed base 1. This provides the foundation for adjusting the angle of the baffle 7. The rotating rod 5 is connected to the baffle 7 via the support seat 6, enabling the rotating rod 5 to effectively drive the baffle 7 to move. This ensures that the baffle 7 maintains a stable posture during operation, accurately blocking and guiding coal blocks during the mining process. A driven gear 8 is fixedly connected to the front end of the rotating rod 5, and a driving gear 9 is meshed with the right end of the driven gear 8. The driving gear 9 is rotatably connected to the front side of the fixed seat 1. This gear transmission structure cleverly converts the rotation of the driving gear 9 into the rotation of the driven gear 8, thereby driving the rotating rod 5 to rotate. Through the rotation of the driving gear 9, the rotation angle of the rotating rod 5 can be precisely controlled, thus achieving precise adjustment of the angle of the baffle 7, compared to direct manual adjustment. This gear transmission method not only saves effort but also enables more precise angle adjustment, allowing the baffle 7 to better adapt to the coal-blocking angle requirements under different coal mining conditions. A groove 11 is provided at the middle of the front side of the fixed base 1, providing a linear track for the slider 12, allowing it to slide along a predetermined trajectory on the fixed base 1. Limiting grooves 13 are provided on the top and bottom sides of the inner wall of the groove 11, and two positioning holes 16 are provided at the right end of the rear side of the inner wall of the groove 11. The slider 12 is slidably connected inside the groove 11, and limiting blocks 14 are fixedly connected to the top and bottom of the slider 12. The limiting blocks 14 are slidably connected to the inner wall of the limiting groove 13. This limiting structure effectively restricts the slider 12 from moving within the groove 11. The movement range within the groove 11 is designed to prevent the slider 12 from shifting or coming off during sliding, ensuring the stability and accuracy of the slider 12's movement, and thus ensuring the reliability of the entire coal blocking plate adjustment structure. The slider 12 is connected to the positioning hole 16 through the positioning component 15. The positioning component 15 plays a key role in accurately positioning the slider 12. When it is necessary to adjust the position of the slider 12, the positioning component 15 can be operated to cooperate with different positioning holes 16, thereby determining the different positions of the slider 12 within the groove 11. In this way, the positions of the components associated with the slider 12 (such as the rotating rod 5) can be flexibly adjusted according to the actual coal mining needs, so as to optimize the adjustment of parameters such as the angle of the baffle 7 and achieve the best coal blocking effect.

[0027] Reference Figures 2-4The top of the support arm 3 is rotatably connected to a cutting wheel 4, and the rear end of the rotating rod 5 is threadedly connected to the inner wall of the support seat 6. On the one hand, this provides stable and reliable connection strength, allowing the support seat 6 to firmly support the baffle 7 when the rotating rod 5 drives the baffle 7 to perform angle adjustments, preventing loosening under conditions such as vibration of the coal mining machine. On the other hand, the threaded connection also facilitates easy separation and reconnection of the rotating rod 5 and the support seat 6 when the baffle 7 needs maintenance, replacement, or further adjustment, improving the convenience of equipment maintenance. A knob 10 is fixedly connected to the front side of the drive gear 9, and the drive gear 9 engages with the left end of the slider 12. The knob 10 provides a convenient operating interface for the operator, allowing manual rotation of the knob 10. The design allows the drive gear 9 to rotate easily, enabling operators to quickly and intuitively adjust its rotation at the coal mining site based on actual coal flow conditions and mining angles. Through engagement with the driven gear 8, it allows for flexible adjustment of the angles of the rotating rod 5 and the baffle 7, meeting the precise requirements for coal blocking angles under different mining conditions. Simultaneously, the drive gear 9 engages with the left end of the slider 12, which fixes the rotation of the drive gear 9. When the drive gear 9 rotates under the influence of the knob 10, the slider 12 restricts its displacement in unintended directions, ensuring stable rotation around a predetermined axis. This results in more stable and precise power transmission, thus guaranteeing the reliability of the entire coal blocking angle adjustment system. To ensure reliability and stability, and to prevent deviations in the adjustment of the coal retaining plate angle due to shaking or offset of the drive gear 9, the installation component 2 includes a fixing block 201, which is fixedly connected to the middle of the right side of the support arm 3. The fixing block 201 is connected to the mounting hole 202 through a fixing bolt 203. This connection method makes the installation and disassembly process of the fixing seat 1 and the support arm 3 simple and convenient, facilitating the quick installation or replacement of the coal retaining plate under different working conditions of the coal mining machine, thus improving the maintenance efficiency of the equipment. The positioning component 15 includes a pull rod 1501, which is slidably connected to the right end of the slider 12. A positioning pin 1502 is fixedly connected to the rear end of the pull rod 1501. The size of the positioning pin 1502 is adapted to the positioning hole 16, and the front end of the pull rod 1501 passes through the slider. On the front side of slider 12, a pull ring 1503 is fixedly connected to the front side of pull rod 1501. A spring 1504 is slidably connected to the outer side of pull rod 1501. The front end of spring 1504 is fixedly connected to the inner wall of slider 12, and the rear end of spring 1504 is fixedly connected to the front side of positioning pin 1502. When it is necessary to adjust the position of slider 12 in slide groove 11, the operator pulls pull ring 1503 to drive pull rod 1501 forward, causing positioning pin 1502 to disengage from the current positioning hole 16. At this time, slider 12 can slide freely in slide groove 11. When slider 12 moves to the appropriate position, pull ring 1503 is released. Under the elastic restoring force of spring 1504, pull rod 1501 slides backward, and positioning pin 1502 re-inserts into the corresponding positioning hole 16.The positioning component 15 is designed to achieve rapid and precise positioning of the slider 12. This design is not only simple and convenient to operate, but also ensures that the slider 12 remains stably fixed in different positions, providing a strong guarantee for the precise adjustment and stable maintenance of the coal retaining plate angle.

[0028] Working principle: First, the fixing seat 1 is securely installed on the support arm 3 using the fixing block 201 and fixing bolt 203 in the installation component 2. The cutting wheel 4 rotates at the top of the support arm 3 to perform coal mining operations. At the same time, the rotating rod 5 obtains stable support and facilitates maintenance, replacement and adjustment through the threaded connection between its rear end and the inner wall of the support seat 6. When it is necessary to adjust the angle of the coal retaining plate, the operator operates the knob 10 to drive the drive gear 9 to rotate. Since the drive gear 9 is engaged with the left end of the slider 12, its rotation is stable and precise. The drive gear 9 drives the rotating rod 5 to rotate through the meshing with the driven gear 8. The sliding connection of the rotating rod 5 in the fixing seat 1 causes it to drive the baffle 7 to move, realizing the angle adjustment; while the fixing seat The front slide groove 11 provides a sliding track for the slider 12. The limiting groove 13 in the slide groove 11 and the limiting block 14 on the slider 12 ensure the stable movement of the slider 12. By pulling the pull rod 1501 through the pull ring 1503 in the positioning component 15, the positioning pin 1502 is disengaged from the positioning hole 16, allowing the slider 12 to slide in the slide groove 11. After sliding to the appropriate position, the pull ring 1503 is released, and the positioning pin 1502 is reinserted into the positioning hole 16 under the elastic force of the spring 1504 to complete the precise positioning of the slider 12. Thus, the position of the components associated with the slider 12 can be flexibly adjusted according to the coal mining requirements, so as to optimize the adjustment of parameters such as the angle of the baffle 7 and achieve the best coal blocking effect.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal retaining plate structure for a coal mining machine, characterized in that, Includes a fixed base (1), which is connected to a support arm (3) via a mounting assembly (2). A rotating rod (5) is slidably connected to the bottom end of the fixed base (1). The rotating rod (5) is connected to a baffle (7) via a support base (6). A driven gear (8) is fixedly connected to the front end of the rotating rod (5). A driving gear (9) is meshed with the right end of the driven gear (8). The driving gear (9) is rotatably connected to the front side of the fixed base (1). A central opening is provided on the front side of the fixed base (1). There is a sliding groove (11), and a limiting groove (13) is provided on the top and bottom sides of the inner wall of the sliding groove (11). Two positioning holes (16) are provided on the right end of the rear side of the inner wall of the sliding groove (11). A slider (12) is slidably connected inside the sliding groove (11). A limiting block (14) is fixedly connected to the top and bottom of the slider (12). The limiting block (14) is slidably connected to the inner wall of the limiting groove (13). The slider (12) is connected to the positioning hole (16) through a positioning component (15).

2. The coal retaining plate structure of a coal mining machine according to claim 1, characterized in that: The top of the support arm (3) is rotatably connected to a cutting wheel (4).

3. The coal retaining plate structure of a coal mining machine according to claim 1, characterized in that: The rear end of the rotating rod (5) is threaded to the inner wall of the support base (6).

4. The coal retaining plate structure of a coal mining machine according to claim 1, characterized in that: A knob (10) is fixedly connected to the front side of the drive gear (9), and the drive gear (9) engages with the left end of the slider (12).

5. The coal retaining plate structure of a coal mining machine according to claim 1, characterized in that: The mounting component (2) includes a fixing block (201), which is fixedly connected to the middle right side of the support arm (3). The fixing block (201) is connected to the mounting hole (202) by a fixing bolt (203).

6. The coal retaining plate structure of a coal mining machine according to claim 1, characterized in that: The positioning component (15) includes a pull rod (1501), which is slidably connected to the right end of the slider (12). A positioning pin (1502) is fixedly connected to the rear end of the pull rod (1501), and the size of the positioning pin (1502) is adapted to the positioning hole (16).

7. The coal retaining plate structure of a coal mining machine according to claim 6, characterized in that: The front end of the pull rod (1501) passes through the front side of the slider (12), and a pull ring (1503) is fixedly connected to the front side of the pull rod (1501).

8. The coal retaining plate structure of a coal mining machine according to claim 6, characterized in that: A spring (1504) is slidably connected to the outside of the pull rod (1501). The front end of the spring (1504) is fixedly connected to the inner wall of the slider (12), and the rear end of the spring (1504) is fixedly connected to the front side of the positioning pin (1502).

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