A modular roof support for onboard temporary support of coal mine tunneling equipment

Abstract

This invention discloses a modular roof support for temporary support in coal mine tunneling equipment, comprising: a main frame, a movable rod, a sealing plate, and an arched beam frame. Multiple fixed lugs are fixedly installed on the inner wall of one side of the main frame, and multiple lug holes are opened on the inner wall of the other side of the main frame. A long rectangular hole is opened on the outer wall of the other side of the main frame. Multiple movable lugs are fixedly installed on the movable rod. One side of the sealing plate is a flat structure, and the other side is provided with multiple protrusions. The sealing plate is detachably connected to the square steel where the rectangular hole is located. Both ends of the arched beam frame are hinged to the fixed lugs and movable lugs, respectively. This device simultaneously features an arched top and a flat top structure. The arched top and flat top structures can be freely switched when the roadway cross-section is divided into rectangular and arched sections, improving the adaptability of the temporary support roof support to the shape of the roadway top. Furthermore, the switching process only requires disassembling and assembling the sealing plate, making the operation simple and quick.

Description

Technical Field

[0001] This invention relates to the field of coal mine roadway support technology, specifically to a combined roof support for onboard temporary support of coal mine tunneling equipment. Background Technology

[0002] During coal mine roadway excavation, after the excavation equipment completes the roadway excavation, anchor mesh support technology is required to permanently support the roadway, providing a safe and reliable passage for subsequent coal mine production. Specifically, after the roadway is cut and shaped, a temporary support device is used. Anchor mesh and steel strips are placed on the top frame of the temporary support device and supported, ensuring that the anchor mesh and steel strips fit snugly against the roadway ceiling. This provides a guarantee for subsequent anchoring work such as installing anchor bolts. This requires the shape of the temporary support device's top frame to closely match the roadway ceiling, thus better and more tightly supporting the anchor mesh and ensuring the quality of subsequent construction. This allows workers to carry out permanent support work such as anchor bolt installation within a safe support range.

[0003] However, due to the complex geological conditions during tunnel construction, coal tunnels and rock tunnels may be constructed in separate sections within a single tunnel. Coal tunnels typically have a rectangular cross-section with a flat roof, while rock tunnels have an arched cross-section with a rounded roof. Traditional temporary support systems, due to limited space and other constraints, currently only offer one type of roof frame. When the tunnel cross-section changes, the entire roof frame must be replaced to adapt to the construction requirements. For the construction team, replacing the entire roof frame is time-consuming and labor-intensive, especially when alternating between rectangular and arched cross-sections. Furthermore, the limited tunnel space and harsh environment make it difficult to preserve idle roof frames and inconvenient to access the equipment. Summary of the Invention

[0004] The technical problem solved by this invention is that tunnel construction includes two situations: rectangular cross-section and arched cross-section. However, the existing temporary support device only has one type of roof frame. When the tunnel cross-section changes, the entire roof frame needs to be replaced to adapt to the construction requirements. For the construction team, replacing the entire roof frame takes a long time and is labor-intensive.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A modular roof support system for onboard temporary support of coal mine tunneling equipment includes:

[0007] The main frame is a rectangular structure formed by connecting multiple square steel bars. Multiple fixing ears are fixedly provided on the inner wall of one side of the main frame, multiple ear holes are opened on the inner wall of the other side of the main frame, and a long rectangular hole is opened on the outer wall of the other side of the main frame.

[0008] A movable rod, the outer diameter of which is smaller than the inner diameter of the square steel where the ear hole is located, and a plurality of movable ears are fixedly provided on the movable rod, the movable ears matching the ear hole;

[0009] The sealing plate has a flat structure on one side and multiple protrusions on the other side. The size of the protrusions matches the gap size between the moving rod and the square steel. The sealing plate matches the rectangular hole. The sealing plate and the square steel where the rectangular hole is located can be detachably installed and connected.

[0010] An arched beam frame, wherein both ends of the arched beam frame are hinged to a fixed lug and a movable lug, respectively, and the arched beam frame includes two symmetrically arranged arched supports, which are hinged to each other.

[0011] As a further aspect of the present invention: the arched support of the arched beam frame includes multiple horizontal bars and vertical bars, the horizontal bars are arranged perpendicularly to the vertical bars, the horizontal bars are arc-shaped bars, and the two ends of the horizontal bars are respectively provided with hinge structures.

[0012] As a further aspect of the present invention, an arched telescopic beam is also provided, the arched telescopic beam comprising a plurality of parallel limiting rods connected by an arc-shaped rod, and the limiting rods slidingly engaging with the vertical rod.

[0013] As a further aspect of the present invention: when the arched beam frame is in a protruding state, the height dimension of the bottom of the lowest limiting rod matches the height dimension of the top surface of the main frame.

[0014] As a further aspect of the present invention: telescopic supports are provided on both sides of the main frame, the telescopic supports include telescopic rods and connecting rods, a connecting pipe is provided on the main frame, and the connecting rods are slidably connected to the connecting pipes.

[0015] As a further embodiment of the present invention: the telescopic rods of the two telescopic supports are arranged alternately.

[0016] As a further aspect of the present invention: the main frame includes a support plate, and an ear seat is fixedly provided at the bottom of the support plate, the ear seat being hinged to the movable end of the drive mechanism.

[0017] According to the present invention, a combined roof support for onboard temporary support of coal mine tunneling equipment has at least one of the following technical effects:

[0018] This device features both arched and flat-top structures. The main frame serves as the flat-top structure, while the arched beam frame serves as the arched structure. The arched and flat-top structures can be freely switched between rectangular and arched segmented distributions in the roadway cross-section, improving the adaptability of the temporary support roof to the roadway roof shape. The switching process only requires the disassembly and reassembly of the sealing plates, making operation simple and quick. Furthermore, this device has a simple structure, low cost, and is easy to implement and operate.

[0019] When stowed, the structure is compact and occupies little space. When the entire temporary support assembly is applied to other tunneling equipment, it requires minimal storage space and does not obstruct the driver's view. When needed, the telescopic supports or arched telescopic beams can be extended to adjust the support area.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention connected to the drive mechanism;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 3 This is a structural schematic diagram of the arched beam frame in the protruding state of the present invention;

[0025] Figure 4 This is a schematic diagram of the arched telescopic beam of the present invention in its extended state;

[0026] Figure 5 This is a schematic diagram of the telescopic bracket of the present invention in its extended state;

[0027] Figure 6 This is the present invention. Figure 5 A structural diagram viewed from below;

[0028] Figure 7 This is a structural schematic diagram of the arched beam frame of the present invention in its lowered state;

[0029] Figure 8 This is a schematic diagram of the arched beam frame structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the main frame of the present invention;

[0031] Figure 10 This is a schematic diagram of the moving rod of the present invention;

[0032] Figure 11 This is a schematic diagram of the sealing plate of the present invention;

[0033] Figure 12 This is a schematic diagram of the telescopic bracket of the present invention.

[0034] In the diagram: 1. Main frame; 2. Ear hole; 3. Moving rod; 4. Movable ear; 5. Sealing plate; 6. Arched beam frame; 7. Horizontal bar; 8. Vertical bar; 9. Arched telescopic beam; 10. Telescopic bracket; 11. Ear seat. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 limiting this invention.

[0037] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] Please see Figure 1-12As shown, the present invention is a combined top frame for onboard temporary support of coal mine tunneling equipment, comprising: main frame 1, movable rod 3, sealing plate 5, and arched beam frame 6. The main frame 1 is a rectangular structure formed by connecting multiple square steels. Multiple fixed lugs are fixedly installed on the inner wall of one side of the main frame 1, and multiple ear holes 2 are opened on the inner wall of the other side of the main frame 1. The positions of the ear holes 2 are opposite to the positions of the fixed lugs. A long rectangular hole is opened on the outer wall of the other side of the main frame 1. The outer diameter of the moving rod 3 is smaller than the inner diameter of the square steel where the ear hole 2 is located. Multiple movable lugs 4 are fixedly installed on the moving rod 3, and the movable lugs 4 match the ear holes 2. One side of the sealing plate 5 is a flat structure, and the other side is provided with multiple protrusions. The size of the protrusions matches the gap size between the moving rod 3 and the square steel. The sealing plate 5 matches the rectangular hole, and the sealing plate 5 and the square steel where the rectangular hole is located can be detachably installed and connected. The two ends of the arched beam frame 6 are respectively hinged to the fixed lugs and the movable lugs 4, and the arched beam frame 6 includes two symmetrically arranged arched supports, which are hinged to each other.

[0039] Please see Figure 1-12 In one embodiment of the present invention, the main frame 1 is a welded component, with square steel welded around its perimeter to form a frame structure. The upper part is a flat structure. The main frame 1 is a rectangular structure formed by connecting multiple square steels. Multiple fixing ears are fixedly provided on one inner wall of the main frame 1, and multiple ear holes 2 are provided on the other inner wall of the main frame 1. The positions of the ear holes 2 are opposite to the positions of the fixing ears. A long rectangular hole is provided on the other outer wall of the main frame 1. The main frame 1 may include a support plate, and an ear seat 11 is fixedly provided at the bottom of the support plate. The ear seat 11 is hinged to the movable end of the drive mechanism. The slewing connection ear seat 11 structure is used to connect the temporary support slewing cylinder to realize the rotation and swing of the entire frame in the front-back, left-right, and other directions.

[0040] Please see Figure 1-12 In one embodiment of the present invention, the outer diameter of the movable rod 3 is smaller than the inner diameter of the square steel where the ear hole 2 is located. A plurality of movable ears 4 are fixedly provided on the movable rod 3, and the movable ears 4 match the ear hole 2. That is, the movable rod 3 is movably disposed in a square steel on the opposite side of a square steel where the fixed ear is located, and the movable ears 4 can extend out from the ear hole 2 and then connect to the other end of the fish-shaped beam frame 6.

[0041] Please see Figure 1-12In one embodiment of the present invention, one side of the sealing plate 5 is a flat structure, and the other side is provided with multiple protrusions. The size of the protrusions matches the gap size between the moving rod 3 and the square steel. The sealing plate 5 matches the rectangular hole, and the sealing plate 5 and the square steel where the rectangular hole is located are detachably connected. Specifically, the connection method can be by bolt connection. In use, the orientation of the protrusions can be changed to change the space in which the moving rod 3 moves within the square steel, thereby changing the upward convexity of the arched beam frame 6. When the protrusions face inward, they abut against the moving rod 3, thereby causing the two hinged ends of the arched beam frame 6 to move closer to each other, thus making the arched beam frame 6 convex in an arc shape. Furthermore, the position of the protrusions matches the position of the movable ear 4, thereby enabling better transmission of force.

[0042] Please see Figure 1-12 In one embodiment of the present invention, the two ends of the arched beam frame 6 are respectively hinged to fixed ears and movable ears 4, and the arched beam frame 6 includes two symmetrically arranged arched supports, which are hinged together. The arched supports of the arched beam frame 6 include multiple horizontal bars 7 and vertical bars 8. The horizontal bars 7 are arranged perpendicularly to the vertical bars 8. The horizontal bars 7 are arc-shaped, and both ends of the horizontal bars 7 are respectively provided with hinged structures. The hinged structures can be rotatably connected to the fixed ears and movable ears 4 through connecting holes and pins. The curvature of the arched supports matches the curvature of the tunnel arch, that is, the curvature of the horizontal bars 7 matches the curvature of the tunnel arch. The horizontal bars 7 are divided into two sections, corresponding to the two symmetrical arched supports. The two sections of each crossbar 7 are hinged together, thus forming two symmetrically arranged arched supports. This allows the overall arched beam frame 6 to fold to a certain extent from the center position. When the distance between the two ends of the arched beam frame 6 changes, the degree of upward convexity of the arched beam frame 6 will change.

[0043] Please see Figure 1-12 In one embodiment of the present invention, an arched telescopic beam 9 is also provided. The arched telescopic beam 9 includes a plurality of parallel limiting rods connected by arc-shaped rods, and the limiting rods slide in engagement with the vertical rod 8. By providing the arched telescopic beam 9, the arched support area can be expanded. When the arched beam frame 6 is in a protruding state, the height dimension of the bottom of the lowest limiting rod matches the height dimension of the top surface of the main frame 1. By having the lowest limiting rod abut against the top surface of the main frame 1, the downward degree of freedom of the arched beam frame 6 can be restricted, providing effective support and protection for the arched beam frame 6.

[0044] Please see Figure 1-12In one embodiment of the present invention, telescopic supports 10 are provided on both sides of the main frame 1. Each telescopic support 10 includes a telescopic rod and a connecting rod. A connecting pipe is provided on the main frame 1, and the connecting rod is slidably connected to the connecting pipe. Two square steels can be respectively provided on the front and rear sides of the main frame 1 to form tracks. The telescopic supports 10 on the left and right sides can each include three vertically welded square steels, two of which are positioned to correspond to the square steels on both sides of the main frame 1 that serve as tracks, and one square steel between the two telescopic rods serves as a connecting rod to connect the two telescopic rods. The telescopic rods of the two telescopic supports 10 can also be staggered, that is, one of the two telescopic rods is located between the two telescopic rods of the other telescopic support 10, and correspondingly, the square steels on both sides of the main frame 1 that serve as tracks are arranged accordingly. This allows the dimensions between the telescopic rods of the two telescopic supports 10 to be equal, eliminating the need to distinguish between the left and right telescopic supports 10 during installation, improving structural versatility, and reducing installation difficulty.

[0045] Working principle of the invention:

[0046] When this device is used for the support of rectangular roadways, the end plate 5 with the protruding side is installed facing outwards. Under gravity, the arched beam frame 6 falls, and the moving rod 3 moves outwards, thus retracting the arched beam. This method is suitable for supporting rectangular roadways. Furthermore, a telescopic support 10 is also provided. When not in use, the telescopic support 10 is retracted, saving space. When needed, the effective support area of ​​the rectangular roadway top can be changed by adjusting the position of the telescopic support 10 relative to the main frame 1.

[0047] When this device is used for arched tunnel support, the sealing plate 5 is removed, and the side of the sealing plate 5 with the protrusion is installed inward, that is, the protrusion contacts the moving rod 3. The protrusion abuts against the moving rod 3, causing the moving rod 3 and the movable ear 4 to move closer to the fixed ear. At this time, the hinge distance at both ends of the arched beam frame 6 is shortened, and the arched beam frame 6 protrudes upward into an arch shape. The arc of the upwardly protruding arched beam frame 6 matches the arc of the arched tunnel's top, better fitting the tunnel's top and thus better and more tightly supporting the anchor mesh, ensuring the quality of subsequent construction. This allows workers to perform permanent support work such as anchor bolt support within a safe support range. Furthermore, the arched telescopic beam 9 can be adjusted to extend, not only expanding the arched support area but also serving as a limiting protection for the arched beam frame 6 components.

[0048] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the scope of the claims.

Claims

1. A modular roof support system for temporary onboard support in coal mine tunneling equipment, characterized in that, include: The main frame (1) is a rectangular structure formed by connecting multiple square steels. Multiple fixing ears are fixedly provided on one inner wall of the main frame (1), and multiple ear holes (2) are opened on the other inner wall of the main frame (1). A long rectangular hole is opened on the other outer wall of the main frame (1). The movable rod (3) has an outer diameter smaller than the inner diameter of the square steel where the ear hole (2) is located. Multiple movable ears (4) are fixedly provided on the movable rod (3), and the movable ears (4) match the ear hole (2). The sealing plate (5) has a flat structure on one side and multiple protrusions on the other side. The size of the protrusions matches the gap size between the moving rod (3) and the square steel. The sealing plate (5) matches the rectangular hole. The sealing plate (5) and the square steel where the rectangular hole is located can be detachably installed and connected. An arched beam frame (6) is hinged at both ends to a fixed lug and a movable lug (4), and the arched beam frame (6) includes two symmetrically arranged arched supports that are hinged together. The arched support of the arched beam frame (6) includes multiple horizontal bars (7) and vertical bars (8). The horizontal bars (7) are arranged perpendicularly to the vertical bars (8). The horizontal bars (7) are arc-shaped bars, and the two ends of the horizontal bars (7) are respectively provided with hinge structures. An arched telescopic beam (9) includes multiple parallel limiting rods connected by an arc-shaped rod, and the limiting rods are in sliding fit with the vertical rod (8). Telescopic supports (10) are provided on both sides of the main frame (1). The telescopic supports (10) include telescopic rods and connecting rods. A connecting pipe is provided on the main frame (1). The connecting rods are slidably connected to the connecting pipes. The main frame (1) also includes a support plate, and a rotary connecting lug (11) is fixedly provided at the bottom of the support plate. The rotary connecting lug (11) is used to connect the temporary support rotary cylinder to realize the front-back and left-right rotation and swing of the entire frame.

2. The combined roof support for onboard temporary support of coal mine tunneling equipment according to claim 1, characterized in that, When the arched beam frame (6) is in a protruding state, the height dimension of the bottom of the lowest limiting rod matches the height dimension of the top surface of the main frame (1).

3. The combined roof support for onboard temporary support of coal mine tunneling equipment according to claim 1, characterized in that, The telescopic rods of the two telescopic brackets (10) are staggered.

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