Forepoling bar supporting and protecting device

Abstract

The utility model provides a forepoling bar supporting and protecting device, the forepoling bar supporting and protecting device comprises a forepoling bar assembly and a connecting assembly, the forepoling bar assembly comprises a tubular beam body and a hanging ring, the extension direction of the tubular beam body is consistent with the extension direction of a roadway, the hanging ring is connected with the tubular beam body, and the connecting assembly is connected with the forepoling bar assembly. The hanging ring is used for being fixedly connected with an anchor rod, the number of the forepoling bar assemblies is multiple, the multiple tubular beam bodies are arranged at intervals in the width direction of the roadway, at least part of the forepoling bar assemblies are arranged below a plate beam, and the connecting assemblies are used for connecting every two adjacent forepoling bar assemblies. The forepoling bar supporting and protecting device has the advantages of being good in supporting effect and high in safety.

Description

Technical Field

[0001] This utility model relates to the field of tunnel excavation support technology, specifically to a forward-probing beam support and protection device. Background Technology

[0002] During coal mine roadway excavation, the front support beam of the roadheader is an important piece of equipment used for temporary support, effectively protecting the safety of workers. However, due to limitations in working face conditions, the front support beam built into the roadheader is sometimes unusable, especially in complex geological environments. In such cases, metal front support beams are used as an alternative for temporary support to prevent roof collapse and worker injury.

[0003] In related technologies, metal forward-moving beams pose certain safety hazards during use. Because each forward-moving beam needs to be moved alternately, if the fixing position of the forward-moving beam fails, it may fall, potentially causing localized roof collapse and resulting in personnel injury. Furthermore, the connection method between the forward-moving beams also affects the stability and safety of the entire support system. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of this utility model propose a front beam support and protection device, which has the advantages of good support effect and high safety.

[0006] The forward beam support and protection device according to an embodiment of the present utility model includes:

[0007] The front-end beam assembly and the connecting assembly are provided. The front-end beam assembly includes a tubular beam and a lifting ring. The extension direction of the tubular beam is consistent with the extension direction of the roadway. The lifting ring is connected to the tubular beam and is used for fixed connection with the anchor bolt. There are multiple front-end beam assemblies, and the multiple tubular beams are arranged at intervals along the width direction of the roadway. At least a portion of the front-end beam assembly is placed below the plate beam. The connecting assembly is used to connect two adjacent front-end beam assemblies.

[0008] In this embodiment of the invention, multiple forward-protruding beam components are arranged at intervals and connected by connecting components to form a continuous support system, greatly improving the stability of the entire support structure. Furthermore, the forward-protruding beam components are positioned below the slab beams, effectively supporting the top slab and preventing it from collapsing.

[0009] In some embodiments, there are multiple lifting rings, which are spaced apart along the length of the tubular beam.

[0010] In some embodiments, the ratio of the distance between two adjacent lifting rings to the length of the tubular beam is less than or equal to 0.25.

[0011] In some embodiments, the front beam assembly further includes a pressure warning element connected to the lifting ring for detecting tension on the lifting ring.

[0012] In some embodiments, the extension direction of the tubular beam is orthogonal to the arrangement of the plate beams.

[0013] In some embodiments, the forward beam assembly further includes a protective netting laid between the tubular beam and the plate beam.

[0014] In some embodiments, the connecting assembly includes a connecting chain and a hand chain hoist, the hand chain hoist being connected to the connecting chain, and the two ends of the connecting chain being connected to two adjacent tubular beams.

[0015] In some embodiments, the forward beam assembly further includes an anti-detachment baffle connected to the tubular beam and located at one end of the tubular beam away from the plate beam, with at least a portion of the anti-detachment baffle placed on the top wall of the tunnel.

[0016] In some embodiments, the forward beam support and protection device of this utility model further includes a buffer assembly, which includes a buffer support and a buffer base. The buffer base is used to be placed below the tubular beam. A first end of the buffer support is connected to the buffer base, and a second end of the buffer support is connected to the tubular beam.

[0017] In some embodiments, the buffer assembly further includes a buffer support, the second end of the buffer support is connected, and the side of the buffer support adjacent to the tubular beam is an arc-shaped surface, with a portion of the tubular beam placed within the arc-shaped surface. Attached Figure Description

[0018] Figure 1 This is a top view schematic diagram of the front beam support and protection device according to an embodiment of this utility model.

[0019] Figure 2 This is a partial structural schematic diagram of the front beam assembly of the front beam support and protection device according to an embodiment of this utility model.

[0020] Figure 3 This is a front view schematic diagram of the front beam support and protection device according to an embodiment of this utility model.

[0021] Figure label:

[0022] 100. Lane, 200. Slab beam,

[0023] 1. Front extension beam assembly; 11. Tubular beam body; 12. Lifting ring; 13. Safety net; 14. Anti-detachment baffle.

[0024] 2. Connecting components; 21. Chain; 22. Hand chain hoist.

[0025] 3. Buffer assembly; 31. Buffer support; 32. Buffer base; 33. Buffer support. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figures 1-3 As shown, the front beam support and protection device of this utility model embodiment includes: a front beam assembly 1 and a connecting assembly 2.

[0028] The forward-extending beam assembly 1 includes a tubular beam 11 and a lifting ring 12, wherein the extension direction of the tubular beam 11 is the same as the extension direction of the roadway 100 (e.g., Figure 1 The left and right directions shown are consistent. The lifting ring 12 is connected to the tubular beam 11, and the lifting ring 12 is used to fix and connect with the anchor rod. There are multiple forward beam assemblies 1, and the multiple tubular beams 11 are along the width direction of the roadway 100 (e.g., as shown in the diagram). Figure 1 The front beam assembly 1 is arranged at intervals in the front-to-back direction as shown in the figure, with at least a portion of the front beam assembly 1 positioned below the plate beam 200, and the connecting assembly 2 used to connect two adjacent front beam assemblies 1.

[0029] Specifically, such as Figures 1-3 As shown, the lifting ring 12 is located at the top of the tubular beam 11, and the lifting ring 12 can be connected to the tubular beam 11 by welding or bolting. The lifting ring 12 is used for fixed connection with the anchor rod, and the strength of the lifting ring 12 must meet certain load-bearing capacity and stability requirements.

[0030] Understandably, the connecting assembly 2 is used to connect two adjacent front-end beam assemblies 1. High-strength pins or bolts can be used to connect the lifting rings 12 or tubular beams 11 of adjacent front-end beam assemblies 1. Alternatively, special connectors, such as chains 21, wire ropes, or telescopic connecting rods, can be used to accommodate the needs of different roadway 100 width variations.

[0031] In other words, multiple forward-extending beam assemblies 1 are arranged at intervals and connected by connecting components 2 to form a continuous support system, which greatly improves the stability of the entire support structure. The forward-extending beam assemblies 1 are placed below the slab beam 200, which can effectively support the top slab and prevent the top slab from collapsing.

[0032] In other words, the forward-protruding beam support and protection device of this utility model has multiple forward-protruding beam components 1 arranged at intervals and connected by connecting components 2 to form a continuous support system, which greatly improves the stability of the entire support structure. In addition, the forward-protruding beam components 1 are placed below the plate beam 200, which can effectively support the top plate and prevent the top plate from collapsing.

[0033] In some embodiments, there are multiple lifting rings 12, and the multiple lifting rings 12 are arranged at intervals along the length direction of the tubular beam 11. It is understood that, as Figures 1-3 As shown, multiple lifting rings 12 are welded or bolted at intervals along the length of the tubular beam 11. The lifting rings 12 are connected to the roof anchors of the roadway 100 via anchor bolt locks. In other words, multi-point anchoring distributes the load and prevents single-point overload. The distance between two adjacent lifting rings 12 and the length of the tubular beam 11 can be determined according to the actual use environment to ensure that the anchoring density is sufficient to resist the dynamic pressure of the roof and reduce the risk of fixation failure.

[0034] Optionally, the ratio of the distance between two adjacent lifting rings 12 to the length of the tubular beam 11 is less than or equal to 0.25. It is understood that, as... Figure 2 As shown, the distance between two adjacent lifting rings 12 is a, and the length of the tubular beam 11 is b. In other words, shorter spacing between the lifting rings 12 allows for a more even distribution of the load on the tubular beam 11, reducing stress concentration caused by concentrated loads and thus improving the overall stability of the support structure. The close arrangement of the rings also reduces the likelihood of displacement of the forward beam under impact or vibration, enhancing worker safety. Furthermore, the number of lifting rings 12 can be appropriately increased or decreased depending on the actual operating environment, ensuring greater flexibility in adjusting the position and angle of the forward beam to adapt to variations in the width and height of different roadways 100.

[0035] In some embodiments, the forward beam assembly 1 further includes a pressure warning device connected to the lifting ring 12 for detecting tension on the lifting ring 12. It is understood that the pressure warning device may include a device such as a pressure sensor capable of monitoring changes in the tension of the lifting ring 12. That is, a pressure sensor or a mechanical tension gauge can be embedded at the connection point of the lifting ring 12 to monitor the tension data of the lifting ring 12 in real time, and report any abnormalities via wireless transmission or an audible and visual alarm. In other words, the pressure warning device monitors the stress state of the anchor bolt in real time, providing early warning when the tension exceeds the limit (such as when the roof subsidence causes the anchor bolt to loosen), thus preventing sudden collapse accidents.

[0036] In some embodiments, the extension direction of the tubular beam 11 is orthogonal to the plate beam 200. It is understood that, as Figures 1-3As shown, the orthogonal arrangement of the tubular beam 11 and the slab beam 200 forms a more stable geometric structure, similar to a traditional beam-column structure, which helps improve the bending and compressive resistance of the entire support system. Furthermore, since the tubular beam 11 and the slab beam 200 are arranged at a 90-degree angle, this helps to distribute the pressure from the top slab more evenly onto the tubular beam 11, avoiding excessive load concentration at a single point or in a single area. The orthogonal arrangement makes the construction process more intuitive and easier, allowing workers to more easily identify and install the beams, thus improving construction efficiency.

[0037] In some embodiments, the forward beam assembly 1 further includes a protective net 13, which is laid between the tubular beam 11 and the plate beam 200. It is understood that the protective net 13 prevents small rocks or coal blocks from falling, protecting the safety of workers below. It provides additional support to the support structure, reducing the risk of roof subsidence and collapse. It prevents larger materials from rolling, maintaining cleanliness and order at the working face. Furthermore, the protective net 13 is easy to inspect and replace, reducing maintenance costs.

[0038] In some embodiments, the connecting assembly 2 includes a connecting chain 21 and a hand chain hoist 22, the hand chain hoist 22 being connected to the connecting chain 21, with both ends of the connecting chain 21 connected to two adjacent tubular beams 11. It is understood that the operation of the hand chain hoist 22 provides flexibility in adjusting the spacing and angle of the tubular beams 11 to adapt to changing conditions in the tunnel 100. The combination of the hand chain hoist 22 and the connecting chain 21 makes installation and disassembly more convenient and faster. Manual adjustment reduces the required manpower and improves work efficiency. Precise adjustment ensures a stronger connection between the tubular beams 11, thereby enhancing the stability of the entire support structure.

[0039] In some embodiments, the forward-probing beam assembly 1 further includes an anti-detachment baffle 14, which is connected to the tubular beam 11 and located at the end of the tubular beam 11 away from the plate beam 200, with at least a portion of the anti-detachment baffle 14 positioned on the top wall of the tunnel 100. It is understood that, as Figures 1-3 As shown, the anti-detachment baffle 14 is welded to the end of the tubular beam 11, and is L-shaped or arc-shaped, closely attached to the top wall of the roadway 100, and partially extends to the roof strata. The anti-detachment baffle 14 can prevent the beam from sliding outward and falling off under the pressure of the roof; the baffle embedded in the roof can form passive support, further restraining the deformation of the roof.

[0040] In some embodiments, the forward beam support and protection device of this utility model further includes a buffer assembly 3. The buffer assembly 3 includes a buffer support 31 and a buffer base 32. The buffer base 32 is used to be placed below the tubular beam 11. The first end of the buffer support 31 is connected to the buffer base 32, and the second end of the buffer support 31 is connected to the tubular beam 11.

[0041] It is understandable that, such as Figure 1 and Figure 3 As shown, the buffer base 32 (such as a rubber pad or hydraulic support) is placed below the tubular beam 11, and the buffer support 31 (spring or hydraulic rod) connects the base to the beam. The arc-shaped surface of the buffer support 33 contacts the beam. This absorbs the impact energy of the roof (such as rock bursts or sudden subsidence) and reduces beam vibration.

[0042] In some embodiments, the buffer assembly 3 further includes a buffer support 33 connected to the second end of the buffer support 31, and the side of the buffer support 33 adjacent to the tubular beam 11 is an arc-shaped surface, with a portion of the tubular beam 11 placed within the arc-shaped surface.

[0043] It is understandable that, such as Figure 3 As shown, the upper surface of the buffer support 33 is concave arc-shaped so that the arc-shaped surface of the buffer support 33 contacts the peripheral wall of the tubular beam 11. That is, the arc-shaped surface contact avoids stress concentration and extends the service life of the beam.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A forward-protruding beam support and protection device, characterized in that, include: The front-end beam assembly and the connecting assembly are provided. The front-end beam assembly includes a tubular beam and a lifting ring. The extension direction of the tubular beam is consistent with the extension direction of the roadway. The lifting ring is connected to the tubular beam and is used for fixed connection with the anchor bolt. There are multiple front-end beam assemblies, and the multiple tubular beams are arranged at intervals along the width direction of the roadway. At least a portion of the front-end beam assembly is placed below the plate beam. The connecting assembly is used to connect two adjacent front-end beam assemblies.

2. The forward beam support and protection device according to claim 1, characterized in that, There are multiple lifting rings, which are arranged at intervals along the length of the tubular beam.

3. The forward beam support and protection device according to claim 2, characterized in that, The ratio of the distance between two adjacent lifting rings to the length of the tubular beam is less than or equal to 0.

25.

4. The forward beam support and protection device according to claim 3, characterized in that, The front beam assembly also includes a pressure warning device connected to the lifting ring for detecting tension on the lifting ring.

5. The forward beam support and protection device according to claim 1, characterized in that, The extension direction of the tubular beam is orthogonal to the arrangement of the plate beam.

6. The forward beam support and protection device according to claim 5, characterized in that, The forward beam assembly also includes a protective net, which is laid between the tubular beam and the plate beam.

7. The forward beam support and protection device according to claim 1, characterized in that, The connecting assembly includes a connecting chain and a hand chain hoist, the hand chain hoist being connected to the connecting chain, and the two ends of the connecting chain being connected to two adjacent tubular beams.

8. The forward beam support and protection device according to claim 7, characterized in that, The forward beam assembly also includes an anti-detachment baffle, which is connected to the tubular beam and located at the end of the tubular beam away from the plate beam, with at least a portion of the anti-detachment baffle placed on the top wall of the tunnel.

9. The forward beam support and protection device according to claim 1, characterized in that, It also includes a buffer assembly, which includes a buffer support and a buffer base. The buffer base is used to be placed below the tubular beam. A first end of the buffer support is connected to the buffer base, and a second end of the buffer support is connected to the tubular beam.

10. The forward beam support and protection device according to claim 9, characterized in that, The buffer assembly further includes a buffer support, the second end of which is connected to the buffer support, and the side of the buffer support adjacent to the tubular beam is an arc-shaped surface, with a portion of the tubular beam placed within the arc-shaped surface.

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