Guiding and supporting structure of coal mining machine
The design of the guide pulley assembly and support slipper assembly solves the problem of unstable center of gravity of the coal mining machine during deep mining, provides reverse torque and reduces friction, thereby achieving stable fixation of the coal mining machine and extending the service life of the components.
Patent Information
- Application Number
- CN202422999595.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-05
AI Technical Summary
When the coal mining machine is engaged in large-scale mining, the unstable center of gravity can easily lead to tipping over, and the guide shoes are prone to damage, affecting the stability and lifespan of the equipment.
The system employs a guide pulley assembly and a support slipper assembly. The guide pulley assembly is rolled to the pin row, and the support slipper assembly is matched with the shovel assembly in a stepped shape to provide a reverse torque to stabilize the coal mining machine and prevent it from tipping over. The rolling connection between the rollers and the pin row also reduces friction.
It effectively prevents the coal mining machine from sliding and tipping over in the downward mining direction, improves the stability of the equipment and the service life of each component, and ensures safe production.
Smart Images
Figure CN223510919U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal mining machines, specifically to a guide support structure for coal mining machines during deep-mining operations. Background Technology
[0002] Coal mining machines, scraper conveyors, and hydraulic supports are the three essential pieces of equipment in fully mechanized longwall mining faces in underground coal mines. In longwall mining, the coal mining machine, via its traveling wheels engaging with the scraper conveyor's pin-and-groove mechanism, rides above the conveyor and moves left and right to achieve bidirectional coal cutting. The dip and strike angles of the longwall mining face fluctuate with changes in the geological conditions of the coal seam. When the strike angle of the coal seam changes, the three pieces of equipment will adjust their operation accordingly, either mining upwards or downwards.
[0003] The coal mining machine body is guided and supported by guide shoes and support shoes. When the coal seam is thick or the mining angle is large, the center of gravity of the coal mining machine is often high. The support shoes will slide downwards along the mining direction under the action of gravity, and the guide shoes will provide tension to the coal mining machine along the mining direction. At the same time, the center of gravity of the coal mining machine body shifts towards the coal wall, making the coal mining machine prone to tipping over due to instability. On the other hand, to prevent the coal mining machine from tipping over, the guide shoes provide tension to the coal mining machine in a downward direction perpendicular to the bottom plate of the working face. Therefore, the guide shoes bear a large tensile force and are prone to damage. In severe cases, they may break and fail, causing the coal mining machine to tip over towards the coal wall. Summary of the Invention
[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a guiding support structure for a coal mining machine, which provides a torque opposite to the direction of gravity for the coal mining machine, thereby reliably fixing the coal mining machine above the scraper conveyor and effectively solving the problem of unstable center of gravity and easy tipping of the coal mining machine during large-scale mining.
[0005] This utility model provides a guide support structure for a coal mining machine, including a guide pulley assembly, a support slipper assembly, and a shovel plate assembly. The guide pulley assembly and the support slipper assembly are located at both ends of the shovel plate assembly, and the contact surface between the support slipper assembly and the shovel plate assembly is stepped. The guide pulley assembly includes rollers connected to the pin row.
[0006] Furthermore, the lower surface of the support shoe assembly and the upper surface of the shovel assembly near the end of the support shoe assembly are both stepped and match each other. The contact surface between the support shoe assembly and the shovel assembly can also be arc-shaped.
[0007] Furthermore, the lower surface of the support shoe assembly and the upper surface of the shovel plate assembly near the end of the support shoe assembly each include a plurality of parallel first surfaces and a second surface connecting two adjacent parallel surfaces.
[0008] Furthermore, the two adjacent first surfaces are located at different heights, and the second surface is inclined.
[0009] Furthermore, the guide pulley assembly includes a fixed frame and rollers. The top of the fixed frame is fixed to the coal mining machine body with screws, and the rollers are installed on the outer side of the bottom of the fixed frame, with pins providing a rolling connection to the rollers. The fixed frame is C-shaped.
[0010] Furthermore, it also includes a rolling bearing mounted at the bottom of the fixed frame, with rollers positioned above the rolling bearing. Preferably, it also includes sealing plates mounted on both sides of the rolling bearing.
[0011] Furthermore, it also includes a retaining ring, which is located between the sealing plate and the rolling bearing, or in the groove between the roller and the rolling bearing.
[0012] Furthermore, the end of the roller that contacts the pin has a groove structure, and the pin is embedded in the end.
[0013] In summary, the stepped fit between the shovel assembly and the support shoe assembly provides support for the coal mining machine in both the vertical and horizontal mining directions, preventing it from sliding down in the horizontal direction. The rolling contact between the rollers and pins in the guide pulley assembly reduces friction between them, extending their lifespan. Furthermore, the guide pulley assembly provides an anti-tipping torque opposite to the direction of the coal mining machine's gravity, reliably securing the machine body to the pins. Attached Figure Description
[0014] Figure 1 The diagram shows the installation schematic of the coal mining machine guide support structure of this utility model.
[0015] Figure 2 A schematic diagram of the guide support structure in the large-scale mining state of this utility model is shown.
[0016] Figure 3 The diagram shows the installation of the support slipper assembly and the shovel assembly of this utility model.
[0017] Figure 4 The diagram shows the installation of the guide pulley assembly of this utility model.
[0018] Figure 5 This diagram shows the structure of the guide pulley assembly of this utility model. Figure 1 .
[0019] Figure 6 This diagram shows the structure of the guide pulley assembly of this utility model. Figure 2 .
[0020] Figure 7 A schematic diagram of a coal mining machine using the guiding support structure of this utility model is shown.
[0021] Component designation explanation
[0022] 100-Coal Mining Machine Guide Support Structure
[0023] 1-Guide pulley assembly
[0024] 11-Fixed Frame
[0025] 12-roller
[0026] 13 – Screws
[0027] 14-Rolling bearings
[0028] 15-Sealing plate
[0029] 16-stop ring
[0030] 2-Support Slipper Assembly
[0031] 21- Lower surface of the support slipper assembly
[0032] 211-First Surface
[0033] 212-Second Surface
[0034] 3-Shovel plate assembly
[0035] 31-First end of the shovel assembly
[0036] 311 - Upper surface of the first end of the shovel assembly
[0037] 3111 - Third Surface
[0038] 3112 - Fourth Surface
[0039] 4 – Pinout Detailed Implementation
[0040] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0041] Please see Figures 1 to 7It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0042] like Figure 1 As shown, the coal mining machine guide support structure 100 includes a guide pulley assembly 1, a support slipper assembly 2, and a shovel assembly 3. The guide pulley assembly 1 and the support slipper assembly 2 are located at both ends of the shovel assembly 3, respectively.
[0043] like Figure 3 As shown, the lower surface 21 of the bottom of the support shoe assembly 2 is stepped. Specifically, the lower surface 21 includes a first surface 211 that is parallel to each other and a second surface 212 that connects two adjacent first surfaces. The two adjacent first surfaces 211 are located at different heights, and the second surface 212 is inclined.
[0044] The first end 31 of the shovel assembly 3 near the support slipper assembly 2 is L-shaped, and the upper surface 311 of the bottom of the first end 31 is also stepped, and the upper surface 311 of the bottom of the first end 31 is in contact with the lower surface 21 of the bottom of the support slipper assembly 2. The upper surface 311 of the bottom of the first end 31 includes mutually parallel third surfaces 3111 and a fourth surface 3112 connecting two adjacent third surfaces, which are respectively in contact with the first surface 211 and the second surface 212. One side of the first end 31 is a protrusion 32. The stepped contact between the shovel assembly 3 and the support slipper assembly 2 provides support force for the coal mining machine in both the vertical support direction F1 and the downward mining direction F2, preventing the coal mining machine from sliding down along the downward mining direction F2. The downward mining direction F2 is the direction downward along the vertical working face bottom plate.
[0045] In another embodiment, the second surface 212 and the fourth surface 3112 are both arc-shaped and match each other, which increases the contact area between the support slipper assembly 2 and the shovel assembly 3 and enhances the anti-slip thrust along the mining direction F2.
[0046] In another embodiment, the tilt angles of the second surface 212 and the fourth surface 3112 can be adjusted according to the working face's downward mining angle, thus expanding the application range of the coal mining machine guide support structure 100.
[0047] like Figure 4 and Figure 5 As shown, the coal mining machine guide support structure 100 also includes a pin row 4. The guide pulley assembly 1 rolls against the lower edge of the pin row 4, and there is a gap H between the guide pulley assembly 1 and the upper edge of the pin row 4. The guide pulley assembly 1 includes a fixed frame 11 and a roller 12. The fixed frame 11 is C-shaped, and the top of the fixed frame 11 is fixed to the coal mining machine body by screws 13. The roller 12 is installed on the outer side of the bottom of the fixed frame 11. When the coal mining machine moves, the roller 12 rolls under the pin row 4. The fixed frame 11 is not only used to connect the coal mining machine and the roller, but also bears the tension of the coal mining machine body and serves as the base for installing various parts.
[0048] In one embodiment, a rolling bearing 14 is also provided on the outer side of the bottom of the fixing frame 11, and the roller 12 is located on the outer side of the rolling bearing 14. Preferably, a sealing plate 15 is also included, located on both sides of the rolling bearing 14, for sealing the lubricating grease inside the rolling bearing 14.
[0049] In another embodiment, a retaining ring 16 is also included. The retaining ring 16 is located between the sealing plate 15 and the rolling bearing 14, or in the groove between the roller 12 and the rolling bearing 14. The guide pulley device 1 is fixed by axially fixing the rolling bearing 14.
[0050] The rolling contact between the roller 12 and the pin row 4 in the guide pulley assembly 1 reduces the friction between them, thus improving their lifespan. Furthermore, the guide pulley assembly 1 provides an anti-tipping torque opposite to the direction of the coal mining machine's gravity, reliably securing the machine body to the pin row 4. The support shoe assembly 2 and the guide pulley assembly 1 respectively provide support and prevent tipping of the coal mining machine, avoiding contact stress between the guide shoe assembly 2 and the pin row 4, further extending the lifespan of the guide shoe assembly 2.
[0051] In another embodiment, the end 121 of the roller 12 that contacts the pin row 4 has a groove structure, and the lower surface of the pin row 4 is embedded in the end 121, so that the relative positions of the roller 12 and the pin row 4 remain unchanged, preventing deviation.
[0052] like Figure 6 As shown, in the guide pulley assembly 1, the fixing frame 11 is fixed to the coal mining machine by two or more screws 13, and a roller 12 is respectively set directly below each screw 13. The lower surface of the pin row 4 is in rolling connection with several rollers 12. The multi-roller combination load-bearing method not only helps to reduce the size of each roller, but also allows them to jointly bear the pulling force on the coal mining machine, improving the anti-tipping torque of the coal mining machine and enhancing its safety and reliability.
[0053] Preferred, such as Figure 7As shown, two of the above-mentioned support slipper assemblies 2 are installed on the coal wall side of the coal mining machine, and two of the above-mentioned guide pulley assemblies 1 are installed on the goaf side of the coal mining machine, which further enhances the stability of the coal mining machine body.
[0054] The coal mining machine guide support structure 100 of this application has a simple structure and is easy to install or disassemble. In the deep mining state, the support slipper assembly 2 provides the anti-slip thrust of the coal mining machine along the mining direction F2, and the guide pulley assembly 1 provides the anti-tipping reverse torque of the coal mining machine, thus ensuring the safe and stable production of the coal mining machine.
[0055] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A guiding support structure for a coal mining machine, characterized in that, It includes a guide pulley assembly, a support slipper assembly, and a shovel plate assembly. The guide pulley assembly and the support slipper assembly are located at opposite ends of the shovel plate assembly. The contact surface between the support slipper assembly and the shovel plate assembly is stepped. The guide pulley assembly includes rollers connected to pins.
2. The coal mining machine guide support structure as described in claim 1, characterized in that, The lower surface of the support shoe assembly and the upper surface of the shovel plate assembly near the end of the support shoe assembly are both stepped and matched to each other.
3. The coal mining machine guide support structure as described in claim 1, characterized in that, The contact surface between the support slipper assembly and the shovel assembly is arc-shaped.
4. The coal mining machine guide support structure as described in claim 2, characterized in that, The lower surface of the support shoe assembly and the upper surface of the shovel plate assembly near the end of the support shoe assembly each include a plurality of parallel first surfaces and a second surface connecting two adjacent parallel surfaces.
5. The coal mining machine guide support structure as described in claim 4, characterized in that, The two adjacent first surfaces are located at different heights, and the second surface is inclined.
6. The coal mining machine guide support structure as described in claim 1, characterized in that, The guide pulley assembly includes a fixed frame and rollers. The top of the fixed frame is fixed to the body of the coal mining machine by screws. The rollers are installed on the outer side of the bottom of the fixed frame, and the pin row is tactilely connected to the rollers.
7. The coal mining machine guide support structure as described in claim 6, characterized in that, The mounting bracket is C-shaped.
8. The coal mining machine guide support structure as described in claim 6, characterized in that, It also includes a rolling bearing mounted at the bottom of the mounting bracket, with the roller located above the rolling bearing.
9. The coal mining machine guide support structure as described in claim 8, characterized in that, It also includes sealing plates installed on both sides of the rolling bearing.
10. The coal mining machine guide support structure as described in claim 9, characterized in that, It also includes a retaining ring, which is located between the sealing plate and the rolling bearing, or in the groove between the roller and the rolling bearing.
11. The coal mining machine guide support structure as described in claim 1, characterized in that, The end of the roller that contacts the pin has a groove structure, and the pin is embedded in the end.