Height-adjustable coal mining machine
By introducing a height-adjustable support shoe and pin rail design into the coal mining machine, the adaptability problem caused by the fixed height of the machine body was solved, and efficient mining and equipment protection were achieved in ultra-long working faces in medium-thick and thin coal seams.
Patent Information
- Application Number
- CN202423079306.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-12-12
AI Technical Summary
The existing coal mining machine design has a fixed body height and cannot adapt to the complex coal mining environment and special production process requirements, resulting in low mining efficiency and severe equipment wear in ultra-long working faces in medium-thick and thin coal seams.
A coal mining machine including a supporting sliding shoe, a guide sliding shoe, a pin rail and a height adjustment component is designed. The height of the supporting sliding shoe and the pin rail is adjusted by the first and second height adjustment components to achieve the adjustability of the machine body height to adapt to different coal seam conditions and mining height requirements.
It improves the flexibility and mining efficiency of coal mining machines in complex environments, reduces equipment wear, extends service life, and reduces safety risks and equipment replacement costs.
Smart Images
Figure CN223344024U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal shearers, in particular to a height-adjustable coal shearer. Background Art
[0002] With the pursuit of efficiency and productivity in coal mining, the deployment of extra-long working faces in medium-thick coal seams has become an effective means of improving mining efficiency. However, the extra-long working faces in medium-thick to thin coal seams present a certain contradiction in shearer design. The shearer needs a low face height to accommodate the demand for a smaller mining height, while also requiring a large installed power and coal handling space to ensure high-speed cutting performance. Existing shearer designs typically have a fixed body height, with the mining height controlled by swinging the boom. However, this approach is not adaptable to the complex mining environment and the unique production process requirements.
[0003] In the prior art, shearers for fully mechanized face mining typically utilize two supporting skids on the coal wall side and two guiding skids on the goaf side. Power is transmitted by a traction motor and a series of wheel sets, enabling movement along a scraper conveyor. However, the fixed height of this design limits its adaptability to complex environments and specialized requirements. Therefore, developing a height-adjustable shearer is a key requirement for improving mining efficiency and adaptability. Utility Model Content
[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.
[0005] To this end, an embodiment of the present utility model provides a coal mining machine with adjustable height.
[0006] The height-adjustable coal mining machine of an embodiment of the present utility model includes a frame, a coal shovel plate, a supporting slide shoe, a first height adjustment component, a guide slide shoe, a pin rail and a second height adjustment component. The supporting slide shoe is arranged on the frame, the first height adjustment component is arranged on the supporting slide shoe, and is used to adjust the height of the supporting slide shoe, and the supporting slide shoe is used to slide on the coal shovel plate; the guide slide shoe is arranged on the frame, the pin rail is arranged on the coal shovel plate and is connected to the guide slide shoe so that the guide slide shoe moves on the pin rail, and the second height adjustment component is arranged between the pin rail and the coal shovel plate, and is used to adjust the height of the pin rail.
[0007] In some embodiments, the supporting slipper includes a slipper frame and a slipper body, and a slipper groove extending in the vertical direction is provided on the bottom end surface of the slipper body, and the slipper body can be slidably matched with the slipper groove in the vertical direction. The first height adjustment component includes a first screw and an internal threaded sleeve, and the first screw extends in the vertical direction and is rotatably provided on the slipper body. The top end of the first screw extends into the slipper groove, and the internal threaded sleeve is provided between the bottom wall of the slipper groove and the slipper body. The internal threaded sleeve is slidably connected to the side wall of the slipper groove in the vertical direction, and the first screw is threadedly connected to the internal threaded sleeve.
[0008] In some embodiments, the height-adjustable coal mining machine of the present invention further includes a push plate, which is disposed on the top of the internal threaded sleeve and is used to push the sliding shoe frame upward.
[0009] In some embodiments, a guide groove extending in a vertical direction is provided on the side wall of the slide groove, and a guide block is provided on the push plate. The guide block is slidably engaged with the guide groove in the vertical direction.
[0010] In some embodiments, the first height adjustment component further includes a first motor, and the first motor is transmission-connected to the first screw to drive the first screw to rotate.
[0011] In some embodiments, the first height adjustment component also includes a first bevel gear and a second bevel gear, the first motor is arranged on one side of the sliding shoe body and the output shaft of the first motor is arranged perpendicular to the first screw, the first bevel gear is mounted on the output shaft of the first motor, the second bevel gear is mounted on the first screw, and the first bevel gear is meshed with the second bevel gear.
[0012] In some embodiments, the second height adjustment component includes a support frame, a second screw and a second motor, the pin rail is arranged on the support frame, a threaded hole opening downward is provided on the bottom end surface of the support frame, the second screw is rotatably connected to the coal shoveling plate in a vertical direction, the second screw is threadedly connected to the threaded hole on the support frame, and the second motor is arranged on the coal shoveling plate to drive the second screw to rotate.
[0013] The height-adjustable coal mining machine of the embodiment of the present invention can better adapt to complex coal mining environments and special production process requirements, and meet the mining needs of ultra-long working faces in medium-thick and thin coal seams. The adjustability of the fuselage height allows the coal mining machine to be adjusted in real time according to different coal seam conditions and mining height requirements, thereby improving flexibility in the mining process. By adjusting the fuselage height, the coal mining machine can ensure a larger installed power and coal passing space while maintaining a lower machine face height, thereby ensuring high-speed cutting performance and improving mining efficiency. In a complex coal mining environment, a fixed fuselage height may cause increased wear between the fuselage and the coal seam. The height-adjustable design can reduce this wear and extend the service life of the coal mining machine. By adjusting the fuselage height, the collision of the coal mining machine with the coal seam and other equipment during operation can be reduced, reducing safety risks. The height-adjustable coal mining machine can adapt to a variety of coal seam conditions, reduce the cost incurred by replacing equipment, and improve economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of a coal mining machine according to an embodiment of the present utility model.
[0015] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.
[0016] Figure 3 It is a partial structural sectional view of a coal mining machine according to an embodiment of the present utility model.
[0017] Figure 4 yes Figure 1 Schematic diagram of the enlarged portion B.
[0018] Figure 5 It is a partial structural sectional view of a coal mining machine according to an embodiment of the present utility model.
[0019] Reference numerals:
[0020] 100. Coal mining machine; 1. Frame; 2. Coal shovel plate; 3. Supporting slide shoe; 301. Slide shoe frame; 302. Slide shoe body; 3021. Slide groove; 3022. Guide groove; 4. Guide slide shoe; 5. Pin rail; 6. First screw rod; 7. Threaded sleeve; 8. Push plate; 9. Guide block; 10. First motor; 11. First bevel gear; 12. Second bevel gear; 13. Supporting frame; 1301. Threaded hole; 14. Second screw rod; 15. Second motor. DETAILED DESCRIPTION
[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0022] like Figures 1 to 5 As shown, a height-adjustable coal mining machine 100 according to an embodiment of the present invention includes a frame 1, a coal shovel plate 2, a support shoe 3, a first height adjustment component, a guide shoe 4, a pin rail 5, and a second height adjustment component. The support shoe 3 is mounted on the frame 1. The first height adjustment component is mounted on the support shoe 3 and is used to adjust the height of the support shoe 3. The support shoe 3 is configured to slide on the coal shovel plate 2. The guide shoe 4 is mounted on the frame 1. The pin rail 5 is mounted on the coal shovel plate 2 and is coupled to the guide shoe 4 to enable movement of the guide shoe 4 on the pin rail 5. The second height adjustment component is positioned between the pin rail 5 and the coal shovel plate 2 and is used to adjust the height of the pin rail 5.
[0023] When in use, the height-adjustable shearer 100 of the present invention can change the height of the support shoe 3 by adjusting the first height adjustment component, and the height of the pin rail 5 by adjusting the second height adjustment component, thereby affecting the position of the guide shoe 4. Both components are adjusted simultaneously during operation to achieve overall height adjustment of the shearer 100, allowing it to adapt to different mining height requirements.
[0024] The height-adjustable shearer 100 of the present invention can better adapt to complex coal mining environments and special production process requirements, meeting the mining needs of medium-thick to thin coal seams with extra-long working faces. The adjustable height of the shearer 100 allows real-time adjustments to different coal seam conditions and mining height requirements, enhancing flexibility during the mining process. By adjusting the height of the shearer 100, the shearer 100 can maintain a high installed power and coal handling capacity while maintaining a low face height, thereby ensuring high-speed cutting performance and improving mining efficiency. In complex coal mining environments, a fixed height can lead to increased wear between the shearer and the coal seam. The height-adjustable design can reduce this wear and extend the service life of the shearer 100. By adjusting the height of the shearer 100, collisions with the coal seam and other equipment during operation can be reduced, reducing safety risks. The height-adjustable shearer 100 can adapt to a variety of coal seam conditions, reducing the cost of equipment replacement and improving economic benefits.
[0025] In some embodiments, the support shoe 3 includes a shoe frame 301 and a shoe body 302. A vertically extending groove 3021 is defined on the bottom surface of the shoe body 302, and the shoe body 302 slidably engages with the groove 3021 in the vertical direction. A first height adjustment component includes a first screw 6 and an internally threaded sleeve 7. The first screw 6 extends vertically and is rotatably mounted on the shoe body 302. The top end of the first screw 6 extends into the groove 3021. The internally threaded sleeve 7 is disposed between the bottom wall of the groove 3021 and the shoe body 302. The internally threaded sleeve 7 is vertically slidably connected to the sidewalls of the groove 3021, and the first screw 6 is threadedly engaged with the internally threaded sleeve 7.
[0026] Specifically, if Figure 3 As shown, the operator can adjust the height of the support shoe 3 by rotating the first screw 6. As the first screw 6 rotates, the internally threaded sleeve 7 moves up and down due to the threaded connection, driving the shoe body 302 to slide within the chute 3021, thereby changing the height of the coal mining machine 100. The threaded connection between the first screw 6 and the internally threaded sleeve 7 allows for precise adjustment of the height of the support shoe 3. This structural design is simple yet powerful, capable of reliably supporting the coal mining machine 100 and maintaining stability at different coal mining heights. The operator can adjust the height with a simple rotational motion, making operation quick and easy. The simple structure also makes maintenance easier, reducing maintenance costs.
[0027] Alternatively, as Figure 3 As shown, the height-adjustable shearer 100 of the present invention further includes a push plate 8, which is disposed on top of the internally threaded sleeve 7 and is used to push the sliding shoe frame 301 upward. The main function of the push plate 8 is to push the sliding shoe frame 301 upward when adjusting the height of the shearer 100, ensuring a more secure connection between the sliding shoe frame 301 and the sliding shoe body 302, and preventing loosening or instability during the height adjustment process.
[0028] In some embodiments, a guide groove 3022 extending in the vertical direction is provided on the side wall of the sliding groove 3021, and a guide block 9 is provided on the push plate 8. The guide block 9 can slide in the vertical direction to cooperate with the guide groove 3022.
[0029] The combination of guide block 9 and guide slot 3022 provides vertical guidance, ensuring that the push plate 8 maintains the correct trajectory and position as it pushes upward against the shoe frame 301. This coordination improves the guidance accuracy of the height adjustment of the shearer 100, making the entire adjustment process more stable and accurate. The lateral support provided by the guide slot 3022 prevents the guide block 9 from shifting during sliding, thereby enhancing stability during adjustment.
[0030] In some embodiments, the first height adjustment component further includes a first motor 10 , which is transmission-connected to the first screw rod 6 to drive the first screw rod 6 to rotate.
[0031] When the first motor 10 is started, it transmits power to the first screw 6 through the transmission device, causing the first screw 6 to rotate. The rotation of the first screw 6 causes the internally threaded sleeve 7 to move along the screw, thereby changing the height of the support shoe 3, thereby adjusting the height of the coal mining machine 100. The integration of the first motor 10 automates the height adjustment process, reducing manual intervention and improving operational convenience and efficiency. The motor's precise control capability ensures accurate height adjustment, allowing the height of the coal mining machine 100 to be precisely adjusted according to a preset program or operator instructions. Automated height adjustment reduces the operator's labor intensity and reduces fatigue during work.
[0032] In some embodiments, the first height adjustment component also includes a first bevel gear 11 and a second bevel gear 12. The first motor 10 is arranged on one side of the sliding shoe body 302 and the output shaft of the first motor 10 is arranged perpendicular to the first screw 6. The first bevel gear 11 is mounted on the output shaft of the first motor 10, and the second bevel gear 12 is mounted on the first screw 6. The first bevel gear 11 is meshed with the second bevel gear 12.
[0033] In some embodiments, the second height adjustment component includes a support frame 13, a second screw 14, and a second motor 15. The pin rail 5 is provided on the support frame 13. A threaded hole 1301 opening downward is provided on the bottom end surface of the support frame 13. The second screw 14 is rotatably connected to the coal shoveling plate 2 in a vertical direction. The second screw 14 is threadedly connected to the threaded hole 1301 on the support frame 13. The second motor 15 is provided on the coal shoveling plate 2 to drive the second screw 14 to rotate.
[0034] Specifically, if Figure 5 As shown, the operator can drive the second screw 14 by controlling the rotation of the second motor 15, thereby adjusting the height of the support frame 13 and then adjusting the height of the pin rail 5. In this way, the mining height of the coal mining machine 100 can be adjusted in real time according to the changes in the coal seam. By controlling the start and stop of the second motor 15, the height of the pin rail 5 can be adjusted, thereby affecting the mining height of the coal mining machine 100. The coordinated use of the second screw 14 and the threaded hole 1301 can achieve precise mining height control, which is very important for improving coal mining quality and reducing resource waste. Due to the accuracy and reliability of the adjustment mechanism, the maintenance cost caused by frequent adjustments and wear can be reduced. By accurately controlling the mining height, the safety risks in the coal mining process can be reduced and the safety of operators and equipment can be protected.
[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0038] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0039] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A height-adjustable coal mining machine, characterized in that: include: A frame (1) and a coal shovel plate (2); A supporting sliding shoe (3) and a first height adjustment component, wherein the supporting sliding shoe (3) is provided on the frame (1), the first height adjustment component is provided on the supporting sliding shoe (3) and is used to adjust the height of the supporting sliding shoe (3), and the supporting sliding shoe (3) is used to slide on the coal shoveling plate (2); A guide slide shoe (4), a pin rail (5) and a second height adjustment component, wherein the guide slide shoe (4) is arranged on the frame (1), the pin rail (5) is arranged on the coal shoveling plate (2) and is connected to the guide slide shoe (4) so that the guide slide shoe (4) moves on the pin rail (5), and the second height adjustment component is arranged between the pin rail (5) and the coal shoveling plate (2) and is used to adjust the height of the pin rail (5).
2. The height-adjustable coal mining machine according to claim 1, characterized in that: The supporting shoe (3) includes a shoe frame (301) and a shoe body (302), a slide groove (3021) extending in the vertical direction is provided on the bottom end surface of the shoe body (302), and the shoe body (302) can be slidably matched with the slide groove (3021) in the vertical direction. The first height adjustment component includes a first screw (6) and an internal threaded sleeve (7), the first screw (6) extends in the vertical direction and is rotatably arranged on the shoe body (302), the top end of the first screw (6) extends into the slide groove (3021), the internal threaded sleeve (7) is arranged between the bottom wall of the slide groove (3021) and the shoe body (302), the internal threaded sleeve (7) is slidably connected to the side wall of the slide groove (3021) in the vertical direction, and the first screw (6) is threadedly connected to the internal threaded sleeve (7).
3. The height-adjustable coal mining machine according to claim 2, characterized in that: It also includes a push plate (8), which is arranged on the top of the internal threaded sleeve (7) and is used to push the sliding shoe frame (301) upward.
4. The height-adjustable coal mining machine according to claim 3, characterized in that: A guide groove (3022) extending in the vertical direction is provided on the side wall of the slide groove (3021), and a guide block (9) is provided on the push plate (8). The guide block (9) is slidably matched with the guide groove (3022) in the vertical direction.
5. The height-adjustable coal mining machine according to claim 2, characterized in that: The first height adjustment component further comprises a first motor (10), and the first motor (10) is transmission-connected to the first screw rod (6) to drive the first screw rod (6) to rotate.
6. The height-adjustable coal mining machine according to claim 5, characterized in that: The first height adjustment component further includes a first bevel gear (11) and a second bevel gear (12); the first motor (10) is arranged on one side of the sliding shoe body (302) and the output shaft of the first motor (10) is arranged perpendicular to the first screw (6); the first bevel gear (11) is mounted on the output shaft of the first motor (10); the second bevel gear (12) is mounted on the first screw (6); and the first bevel gear (11) is meshed with the second bevel gear (12).
7. The height-adjustable coal mining machine according to claim 1, characterized in that: The second height adjustment component includes a support frame (13), a second screw rod (14) and a second motor (15); the pin rail (5) is arranged on the support frame (13); a threaded hole (1301) opening downward is provided on the bottom end surface of the support frame (13); the second screw rod (14) is rotatably connected to the coal shoveling plate (2) in a vertical direction; the second screw rod (14) is threadedly connected to the threaded hole (1301) on the support frame (13); and the second motor (15) is arranged on the coal shoveling plate (2) for driving the second screw rod (14) to rotate.