Novel onboard forepoling of roadheader

Abstract

The invention provides a novel integrated excavator onboard forepoling, and relates to the field of integrated excavators, the novel integrated excavator onboard forepoling comprises an integrated excavator drill bit body and a supporting assembly, the supporting assembly comprises a left driving assembly, a right driving assembly, a left supporting front shaft, a right supporting front shaft, a left supporting oil cylinder, a right supporting oil cylinder, a main top frame, a left telescopic assembly and a right telescopic assembly, a hydraulic system of the roadheader is used as a power source, when temporary supporting is needed, forward driving is conducted through the left driving assembly and the right driving assembly, upward driving is conducted through the left supporting oil cylinder and the right supporting oil cylinder, and the main top frame is arranged at the upper end of a drill bit body of the roadheader in a covering mode. According to the invention, shape follow-up support in a complex roadway environment can be realized, the adaptability of equipment to variable geological conditions is improved, the application of novel airborne advanced support equipment which is higher in adaptability, higher in safety and better in cooperation efficiency with a fully-mechanized excavating machine is realized, and the actual requirements of fully-mechanized excavating operation of mines under the complex geological conditions are met.

Description

Technical Field

[0001] This application relates to the field of roadheaders, and more specifically, to a novel onboard advanced support system for roadheaders. Background Technology

[0002] Some roadheader-mounted advanced support technologies have improved the safety and efficiency of tunneling operations to a certain extent, but still have some limitations.

[0003] Impact on coal cutting operations: The connection between the onboard hydraulic forward beam and the roadheader increases the load and volume of the cutting section, affecting the coal cutting speed and obstructing the driver's view, thus hindering coal cutting. Insufficient support area: Some advanced support devices have rectangular frames on both sides of the roof. After deployment, gaps will appear on both sides of the front end of the roof, resulting in a lack of support components and affecting the support capacity.

[0004] Existing technologies primarily consider basic support functions during design, but do not adequately consider the compatibility and coordination of the overall operation process of roadheaders. They fail to fully balance the relationship between support and operations such as coal cutting, leading to problems such as affecting coal cutting and insufficient support strength.

[0005] To address the issues of support strength and area, significant optimization of the existing equipment structure is required, such as redesigning the support method and shape of the forward beam. This involves a wide range of knowledge, including mechanical calculations, material selection, and hydraulic system adjustments, presenting a high level of technical difficulty. In addressing the impact on coal cutting operations and support efficiency, it is necessary to comprehensively consider the spatial layout and operational sequence of the various components of the roadheader. This requires ensuring the support effect without affecting other operations, necessitating a thorough understanding of the roadheader's working principles and on-site construction procedures, as well as coordinating relationships among various parties, presenting a considerable challenge. Summary of the Invention

[0006] The purpose of this application is to provide a new type of onboard advanced support for roadheaders, which can solve the above-mentioned technical problems.

[0007] This application provides a novel onboard advanced support system for a roadheader, comprising a roadheader drill bit body and a support assembly. The support assembly includes a left drive assembly, a right drive assembly, a left support front axle, a right support front axle, a left support cylinder, a right support cylinder, a main top frame, a left telescopic assembly, and a right telescopic assembly. Mounting components are provided at both ends of the roadheader drill bit body. One end of the left drive assembly and one end of the right drive assembly are rotatably connected to the mounting components. The other end of the left drive assembly is connected to the left support front axle, and the other end of the right drive assembly is connected to the right support front axle. The left and right support front axles are wedge-shaped. The front support shaft and the right support shaft are rotatably connected to the side of the roadheader drill bit body. The lower end of the left telescopic assembly is connected to the left support shaft, and the lower end of the right telescopic assembly is connected to the right support shaft. One end of the main top frame is connected to the other end of the left telescopic assembly and the other end of the right telescopic assembly. The main top frame is located above the roadheader drill bit body. The lower end of the left support cylinder is movably connected to the left telescopic assembly, and the upper end of the left telescopic assembly is movably connected to the main top frame. The lower end of the right support cylinder is movably connected to the right telescopic assembly, and the upper end of the right telescopic assembly is movably connected to the main top frame.

[0008] Preferably, the front end of the main top frame is provided with a forward tilting bracket, the forward tilting bracket is connected to the main top frame through a first hinge assembly, and a forward tilting drive cylinder is provided between the forward tilting bracket and the main top frame, with at least two forward tilting drive cylinders provided.

[0009] Preferably, both ends of the front tilting bracket are provided with a tilting top frame, and the tilting top frame is connected to the main top frame through a second hinge assembly, with at least two second hinge assemblies provided on one side.

[0010] Preferably, both the forward tilting bracket and the side tilting top frame are inclined downwards, and both are hollowed out.

[0011] Preferably, the main top frame includes multiple metal supports arranged longitudinally and transversely, the metal supports are hollowed out, and the main top frame as a whole is arc-shaped.

[0012] Preferably, both the left telescopic assembly and the right telescopic assembly include a station sleeve and a station tube. The lower end of the station tube is slidably installed inside the station sleeve. The lower end of the station sleeve is connected to the left support front shaft or the right support front shaft. The upper end of the station tube is hinged to the main top frame.

[0013] Preferably, a first crosshead is provided between the station pipe and the main top frame, and a second crosshead is provided between the left support cylinder and the main top frame, and between the right support cylinder and the main top frame.

[0014] Preferably, the metal bracket has a "V"-shaped support inside, and the connection of the metal bracket has a reinforcing triangular piece.

[0015] The beneficial effects of this invention are:

[0016] This invention provides a novel onboard advanced support system for a roadheader, comprising a roadheader drill bit body and a support assembly. The support assembly includes a left drive assembly, a right drive assembly, a left support front shaft, a right support front shaft, a left support cylinder, a right support cylinder, a main top frame, a left telescopic assembly, and a right telescopic assembly. Mounting components are provided at both ends of the roadheader drill bit body. One end of each of the left and right drive assemblies is rotatably connected to a mounting component. The other end of the left drive assembly is connected to the left support front shaft, and the other end of the right drive assembly is connected to the right support front shaft. The left and right support front shafts are wedge-shaped and rotatably connected to the sides of the roadheader drill bit body. The lower end of the left telescopic assembly is connected to the left support front shaft, and the lower end of the right telescopic assembly is connected to the right support front shaft. One end of the main top frame is connected to the other end of the left telescopic assembly... The other end of the right telescopic assembly is connected to the main top frame, which is positioned above the drill bit body of the roadheader. The lower end of the left support cylinder is movably connected to the left telescopic assembly, and the upper end of the left telescopic assembly is movably connected to the main top frame. The lower end of the right support cylinder is movably connected to the right telescopic assembly, and the upper end of the right telescopic assembly is movably connected to the main top frame. This invention uses the hydraulic system of the roadheader as a power source. When temporary support is needed, the left and right drive assemblies drive forward, and the left and right support cylinders drive upward, so that the main top frame covers the upper end of the drill bit body of the roadheader. This invention adopts multi-degree-of-freedom adaptive adjustment, combined with the site environment, to achieve conformal support in complex roadway environments, improve the equipment's adaptability to changing geological conditions, and provide a new type of airborne advanced support equipment with stronger adaptability, higher safety, and better coordination efficiency with the roadheader, meeting the actual needs of mine roadheading operations under complex geological conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure from another perspective of the present invention;

[0020] Figure 3 This is a side view of the present invention;

[0021] Figure 4 This is a top view of the present invention.

[0022] The reference numerals in the attached figures are as follows:

[0023] 1. Drill bit body of roadheader; 2. Support assembly; 3. Left drive assembly; 4. Right drive assembly; 5. Left support front axle; 6. Right support front axle; 7. Left support cylinder; 8. Right support cylinder; 9. Main top frame; 10. Left telescopic assembly; 11. Right telescopic assembly; 12. Mounting component; 13. Forward tilting bracket; 14. First hinge assembly; 15. Forward tilting drive cylinder; 16. Side tilting top frame; 17. Second hinge assembly connection; 18. Station sleeve; 19. Station pipe; 20. First crosshead; 21. Second crosshead; 22. Support component; 23. Reinforcing triangular plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this application and for simplifying the description, 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 application. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] like Figure 1-4As shown, a novel onboard advanced support system for a roadheader includes a roadheader drill bit body 1 and a support assembly 2. The support assembly 2 includes a left drive assembly 3, a right drive assembly 4, a left support front axle 5, a right support front axle 6, a left support cylinder 7, a right support cylinder 8, a main top frame 9, a left telescopic assembly 10, and a right telescopic assembly 11. Mounting components 12 are provided at both ends of the roadheader drill bit body 1. One end of the left drive assembly 3 and one end of the right drive assembly 4 are rotatably connected to the mounting components 12. The other end of component 3 is connected to the left support front shaft 5, and the other end of the right drive component 4 is connected to the right support front shaft 6. The left support front shaft 5 and the right support front shaft 6 are wedge-shaped. The left support front shaft 5 and the right support front shaft 6 are rotatably connected to the side of the drill bit body 1 of the roadheader. The lower end of the left telescopic component 10 is connected to the left support front shaft 5, and the lower end of the right telescopic component 11 is connected to the right support front shaft 6. One end of the main top frame 9 is connected to the left telescopic component. The other end of 10 is connected to the other end of the right telescopic component 11. The main top frame 9 is set above the drill bit body 1 of the roadheader. The lower end of the left support cylinder 7 is movably connected to the left telescopic component 10, and the upper end of the left telescopic component 10 is movably connected to the main top frame 9. The lower end of the right support cylinder 8 is movably connected to the right telescopic component 11, and the upper end of the right telescopic component 11 is movably connected to the main top frame 9. This invention uses the hydraulic system of the roadheader as a power source. When temporary support is needed, the left drive component 3 and the right drive component 4 drive forward, and the left support cylinder 7 and the right support cylinder 8 drive upward, so that the main top frame 9 covers the upper end of the drill bit body 1 of the roadheader. This invention adopts multi-degree-of-freedom adaptive adjustment. Combined with the site environment, it can realize conformal support in complex roadway environments, improve the equipment's adaptability to changing geological conditions, and provide a new type of airborne advanced support equipment with stronger adaptability, higher safety, and better coordination efficiency with the roadheader, meeting the actual needs of mine roadheading operations under complex geological conditions.

[0031] Specifically, during the operation of this invention, the hydraulic system of the roadheader serves as the power source. The hydraulic oil from the roadheader's hydraulic pump station passes through the overflow valve, operating valve, and flow divider / combiner valve into the left drive assembly 3, right drive assembly 4, left support cylinder 7, and right support cylinder 8. Driven by the left drive assembly 3 and right drive assembly 4, the left support front shaft 5 and right support front shaft 6 rotate forward or backward, causing the main top frame 9 to move back and forth. Driven by the left support cylinder 7 and right support cylinder 8, the main top frame 9 can move up or down, and its forward / backward and up / down movements can be flexibly adjusted as needed.

[0032] like Figure 1-2As shown in this embodiment, the front end of the main top frame 9 is provided with a forward tilting bracket 13. The forward tilting bracket 13 is connected to the main top frame 9 through a first hinge assembly 14. A forward tilting drive cylinder 15 is provided between the forward tilting bracket 13 and the main top frame 9. At least two forward tilting drive cylinders 15 are provided. The forward tilting bracket 13 of the present invention can further protect the front end of the drill bit body 1 of the roadheader. The forward tilting bracket 13 can be driven to rotate by the forward tilting drive cylinder 15, and the direction and tilt angle of the forward tilting bracket 13 can be adjusted.

[0033] like Figure 1-2 As shown in this embodiment, both ends of the front tilting bracket 13 are provided with a side tilting top frame 16. The side tilting top frame 16 is connected to the main top frame 9 by a second hinge assembly 17. At least two second hinge assemblies are provided on one side. The side tilting top frame 16 of the present invention can expand the protection range of the main top frame 9. When a falling object falls from the side, it can increase the distance between the falling object and the drill bit body 1 of the roadheader, which can further protect the drill bit body 1 of the roadheader. The angle of the side tilting top frame 16 can be adjusted by the second hinge assembly.

[0034] like Figure 1-2 As shown in this embodiment, in order to facilitate the rapid fall of objects from the side and front, the front-flipping bracket 13 and the side-flipping top bracket 16 are both inclined downwards, and the front-flipping bracket 13 and the side-flipping top bracket 16 are both hollowed out. Specifically, the hollowed-out front-flipping bracket 13 and the side-flipping top bracket 16 can appropriately reduce the weight.

[0035] like Figure 1 , 2 As shown in Figure 4, in this embodiment, the main top frame 9 includes multiple metal supports arranged longitudinally and transversely. The metal supports are hollowed out. To facilitate the rapid rolling of falling objects, the main top frame 9 is generally arc-shaped. Specifically, the hollowed-out metal supports and the side-flipping top frame 16 can appropriately reduce weight. To prevent the metal supports from being flattened by heavy objects during use, a "V"-shaped support member 22 is provided inside the metal supports, and a reinforcing triangular piece 23 is provided at the connection of the metal supports.

[0036] like Figure 1-2As shown, in this embodiment, both the left telescopic assembly 10 and the right telescopic assembly 11 include a station sleeve 18 and a station tube 19. The lower end of the station tube 19 is slidably installed inside the station sleeve 18. The lower end of the station sleeve 18 is connected to the left support front shaft 5 or the right support front shaft 6. The upper end of the station tube 19 is hinged to the main top frame 9. A first crosshead 20 is provided between the station tube 19 and the main top frame 9. A second crosshead 21 is provided between the left support cylinder 7 and the main top frame 9, and between the right support cylinder 8 and the main top frame 9. Specifically, the present invention flexibly controls the up and down movement of the main top frame 9 through the first crosshead 20 and the second crosshead 21, resulting in high reliability of movement.

[0037] This invention, based on spatial layout simulation and motion interference analysis, combined with multi-device integrated optimization algorithms, enables precise positioning and lightweight installation of advanced support devices on tunneling machines. While minimizing modifications to the tunneling machine itself, it ensures that support actions do not interfere with tunneling and cutting operations, guaranteeing their collaborative efficiency. The invention also features adaptive support adjustment technology for complex tunnel environments: a multi-degree-of-freedom linkage mechanism, combined with real-time sensing of tunnel cross-section and roof conditions, enables adaptive fitting of the roof beam to the exposed roof, solving the support adaptation problem for tunnels with different inclination angles and cross-sectional dimensions. Furthermore, it includes a hydraulic circuit adapted to support actions, improving the stability of hydraulic components under harsh working conditions, ensuring precise control of support actions and long-term system operation.

[0038] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A novel type of machine-mounted advanced support for roadheaders, characterized in that: The system includes a roadheader drill bit body and a support assembly. The support assembly includes a left drive assembly, a right drive assembly, a left support front shaft, a right support front shaft, a left support cylinder, a right support cylinder, a main top frame, a left telescopic assembly, and a right telescopic assembly. Mounting components are provided at both ends of the roadheader drill bit body. One end of each of the left and right drive assemblies is rotatably connected to a mounting component. The other end of the left drive assembly is connected to the left support front shaft, and the other end of the right drive assembly is connected to the right support front shaft. The left and right support front shafts are wedge-shaped. The shafts are rotatably connected to the sides of the roadheader drill bit body, the lower end of the left telescopic assembly is connected to the left support front shaft, the lower end of the right telescopic assembly is connected to the right support front shaft, one end of the main top frame is connected to the other end of the left telescopic assembly and the other end of the right telescopic assembly, the main top frame is located above the roadheader drill bit body, the lower end of the left support cylinder is movably connected to the left telescopic assembly, the upper end of the left telescopic assembly is movably connected to the main top frame, the lower end of the right support cylinder is movably connected to the right telescopic assembly, and the upper end of the right telescopic assembly is movably connected to the main top frame.

2. The novel roadheader-mounted advanced support system according to claim 1, characterized in that: The front end of the main top frame is provided with a forward tilting bracket, which is connected to the main top frame through a first hinge assembly. A forward tilting drive cylinder is provided between the forward tilting bracket and the main top frame, and at least two forward tilting drive cylinders are provided.

3. A novel onboard advanced support system for roadheaders according to claim 2, characterized in that: Both ends of the front tilting bracket are provided with a tilting top frame, and the tilting top frame is connected to the main top frame through a second hinge assembly. At least two second hinge assemblies are provided on one side.

4. A novel onboard advanced support system for roadheaders according to claim 3, characterized in that: Both the forward tilting bracket and the side tilting top frame are inclined downwards, and both are hollowed out.

5. A novel onboard advanced support system for roadheaders according to claim 1, characterized in that: The main top frame includes multiple metal supports arranged longitudinally and transversely, the metal supports are hollowed out, and the main top frame as a whole is arc-shaped.

6. A novel onboard advanced support system for roadheaders according to claim 1, characterized in that: Both the left telescopic assembly and the right telescopic assembly include a station sleeve and a station tube. The lower end of the station tube is slidably installed inside the station sleeve. The lower end of the station sleeve is connected to the left support front shaft or the right support front shaft. The upper end of the station tube is hinged to the main top frame.

7. A novel onboard advanced support system for roadheaders according to claim 6, characterized in that: A first crosshead is provided between the station pipe and the main top frame, and a second crosshead is provided between the left support cylinder and the main top frame, and between the right support cylinder and the main top frame.

8. A novel onboard advanced support system for roadheaders according to claim 5, characterized in that: The metal bracket has a "V"-shaped support inside, and the joints of the metal bracket are equipped with reinforcing triangular pieces.

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