Novel anchor cable steel beam

Abstract

The utility model relates to the technical field of coal mine safety support, and provides a novel anchor cable steel beam which comprises a pair of first connecting plates, a plurality of anchor cable holes are formed in the first connecting plates in the length direction of the first connecting plates, a plurality of first bending structures are arranged on the first connecting plates in the width direction of the first connecting plates, and the first bending structures are distributed on the two sides of the anchor cable holes. A plurality of second bending structures are continuously arranged on the second connecting plates in the length direction of the second connecting plates, and the second connecting plates and the first connecting plates are connected with each other to define a box girder structure with a rectangular section; due to the existence of the closed box girder section, the flexural capacity of the whole novel anchor cable steel girder is greatly improved compared with the traditional channel steel, flat steel, U-shaped steel, I-shaped steel and the like, the bending structure improves the virtual material distribution of the bending structure compared with a straight web member, the flexural capacity of the bending structure is also greatly improved, and the bending strength of the novel anchor cable steel girder is greatly improved. Deformation of the top plate can be effectively reduced, and therefore safe production of a coal mine is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine safety support, in particular to a novel anchor cable steel beam. Background Art

[0002] Coal, a vital global energy source, is China's primary energy source. As shallow resources in my country become increasingly depleted, numerous mining projects are gradually expanding into deeper areas. In recent years, underground projects have been extending deeper at a rate of 10 to 25 meters per year. Existing tunnel support systems include anchor bolts, anchor cables, and combined steel belt support. However, as mining depth increases, the high ground stresses and the complex stress fields of deep strata create numerous challenges to the stability and support of tunnel roofs. These challenges can easily lead to damage or total failure, resulting in excessive deformation of the coal roof and other problems, seriously threatening the exploitation of deep coal resources.

[0003] In this context, the anchor beam support form is increasingly showing its advantages. The anchor beam support structure is a combined support form composed of steel support beams and anchor rods (cables). Commonly used steel support beams include channel steel, flat steel, U-shaped steel, I-beam, etc. Under the action of the anchor preload, the steel support beam and the rock strata within the anchor support range produce a compression zone to form a whole, thereby enhancing the stability of the surrounding rock.

[0004] However, U-shaped steel, I-beam, etc. form linear contact with the surrounding rock when in use, resulting in a small protected surface area, poor support force transmission and diffusion effect, heavy self-weight, and relatively high support cost. Utility Model Content

[0005] The utility model provides a novel anchor cable steel beam, which is used to solve the problems of small surface protection area, large deadweight and limited bending bearing capacity of medium-sized steel support beams in the prior art.

[0006] The utility model provides a new type of anchor cable steel beam, comprising:

[0007] A pair of first connecting plates, wherein the first connecting plates are provided with a plurality of anchor holes along their length direction, and the first connecting plates are provided with a plurality of first bending structures along their width direction, and the first bending structures are distributed on both sides of the anchor holes;

[0008] A pair of second connecting plates, wherein the second connecting plates are continuously provided with a plurality of second bending structures along the length direction thereof, and the second connecting plates are connected to the first connecting plates to form a box beam structure with a rectangular cross section.

[0009] According to the new anchor cable steel beam provided by the present invention, at least two first bending structures are provided, and the two first bending structures are symmetrically distributed on both sides of the anchor cable hole.

[0010] According to the new anchor cable steel beam provided by the present invention, a plurality of the second bending structures are formed on the second connecting plate in a continuous bending shape.

[0011] According to the new anchor cable steel beam provided by the present invention, the second connecting plate is connected to the first connecting plate by welding.

[0012] According to the new anchor cable steel beam provided by the present invention, the first bending structure is a V-shaped groove or an arc-shaped groove.

[0013] According to the new anchor cable steel beam provided by the present invention, the second bending structure is a V-shaped groove, an arc-shaped groove or a trapezoidal groove.

[0014] According to the new anchor cable steel beam provided by the present invention, the height h of the second bending structure is 35-50 mm.

[0015] According to the new anchor cable steel beam provided by the present invention, the width b of the second bending structure is 70-150 mm.

[0016] According to the new anchor cable steel beam provided by the present invention, the width of the first connecting plate is 340-360 mm.

[0017] According to the new anchor cable steel beam provided by the present invention, the thickness d of the first connecting plate and the second connecting plate are both 3-10 mm.

[0018] The utility model provides a novel anchor cable steel beam, comprising a pair of first connecting plates and a pair of second connecting plates, wherein the first connecting plate is provided with a plurality of anchor cable holes along its length direction, and the first connecting plate is provided with a plurality of first bending structures along its width direction, and the first bending structures are distributed on both sides of the anchor cable holes; the second connecting plate is continuously provided with a plurality of second bending structures along its length direction, and the second connecting plate and the first connecting plate are connected to each other to form a box beam structure with a rectangular cross section; the utility model connects the second connecting plate and the first connecting plate to each other to form a box beam structure with a rectangular cross section, and provides the first bending structures on both sides of the anchor cable holes on the first connecting plate, and continuously provides the second bending structures on the second connecting plate along its length direction. Due to the existence of the closed box beam section, the bending bearing capacity of the entire new anchor steel beam has been greatly improved compared with traditional channel steel, flat steel, U-shaped steel, I-beam, etc., and the second connecting plate has improved its own "virtual" material distribution relative to the straight web member by setting a second bending structure, that is, it is equivalent to adding some material distribution effects in the thickness direction relative to the original flat plate on the basis of the original flat plate. These "virtual" material distributions increase the effective moment of inertia of the section and greatly improve its bending bearing capacity. When subjected to the squeezing effect of the tunnel roof, the new anchor steel beam relies on its own high cross-sectional stiffness to effectively reduce the deformation of the roof, thereby effectively ensuring the safe production of the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the overall structure of a new type of anchor cable steel beam provided by an embodiment of the utility model;

[0021] Figure 2 A schematic structural diagram of a first connecting plate provided in an embodiment of the present utility model;

[0022] Figure 3 This is one of the structural schematic diagrams of the second connecting plate provided in an embodiment of the present utility model;

[0023] Figure 4 The second structural diagram of the second connecting plate provided in an embodiment of the present utility model;

[0024] Figure 5 The third structural diagram of the second connecting plate provided in an embodiment of the present utility model;

[0025] Figure 6 One of the top views of the second connecting plate provided in an embodiment of the present utility model;

[0026] Figure 7 A second top view of the second connecting plate provided in an embodiment of the present utility model;

[0027] Figure 8 This is a third top view of the second connecting plate provided in an embodiment of the present utility model.

[0028] Reference numerals:

[0029] 1. First connecting plate; 11. Anchor cable hole; 12. First bending structure;

[0030] 2. Second connecting plate; 21. Second bending structure. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0033] The following combination Figures 1-8 The utility model describes a novel anchor cable steel beam.

[0034] An embodiment of the present utility model provides a new type of anchor steel beam, including: a pair of first connecting plates 1 and a pair of second connecting plates 2, the second connecting plates 2 and the first connecting plates 1 are connected to each other to form a box beam structure with a rectangular cross-section, that is, the ends of the pair of first connecting plates 1 and the pair of second connecting plates 2 are vertically connected to each other, for example, the pair of first connecting plates 1 are arranged in parallel and spaced apart, and the pair of second connecting plates 2 are vertically connected between the pair of first connecting plates 1 and play a supporting and connecting role, thereby forming a box beam structure with a rectangular cross-section.

[0035] Among them, the first connecting plate 1 is provided with multiple anchor holes 11 along its length direction, which is conducive to passing the anchor cable to fix the new anchor steel beam to the external structure; the first connecting plate 1 is provided with multiple first bending structures 12 along its width direction, and the first bending structures 12 are distributed on both sides of the anchor hole 11; the second connecting plate 2 is provided with multiple second bending structures 21 along its length direction.

[0036] With such a configuration, due to the presence of the closed box beam cross-section, the bending bearing capacity of the entire new anchor steel beam is greatly improved compared with traditional channel steel, flat steel, U-shaped steel, I-beam, etc. The multiple first bending structures 12 on the first connecting plate 1 significantly improve the ability of the steel beam to resist bending deformation, and the second bending structure 21 on the second connecting plate 2 also enhances the stiffness of the steel beam. These bending structures increase the "virtual" material distribution, that is, it is equivalent to adding some material distribution effects relative to the thickness direction of the flat plate on the basis of the original flat plate. These "virtual" material distributions increase the effective moment of inertia of the cross-section, especially in the direction perpendicular to the first connecting plate 1, which helps to resist the action of lateral forces; in addition, by arranging multiple anchor holes 11 on the first connecting plate 1, the installation of anchor cables is facilitated, and multi-point fixation between the steel beam and external structures such as coal body, rock, etc. can be achieved, which helps to evenly disperse external forces, thereby improving the stability and bearing capacity of the entire structure.

[0037] like Figure 1-Figure 2 As shown, in this embodiment, a pair of first connecting plates 1 include a first upper connecting plate and a first lower connecting plate, the first upper connecting plate is arranged parallel to the top of the first lower connecting plate, and a pair of second connecting plates 2 are arranged between the first upper connecting plate and the first lower connecting plate to play a supporting and connecting role. The pair of second connecting plates 2 include a second left connecting plate and a second right connecting plate, the top ends of the second left connecting plate and the second right connecting plate are respectively vertically connected to the two ends of the first upper connecting plate, and the bottom ends of the second left connecting plate and the second right connecting plate are respectively vertically connected to the two ends of the first lower connecting plate, that is, the second left connecting plate and the second right connecting plate are fixed in the space between the first upper connecting plate and the first lower connecting plate by welding the upper and lower ends, thereby forming a box beam structure with a rectangular cross-section.

[0038] Preferably, the connecting plates are made of high-strength steel, and by setting a bending structure, the "virtual" material distribution is increased compared to the traditional straight plate. It has the characteristics of high rigidity and large surface protection area, which can effectively improve the diffusion range of the anchor cable preload force and the bending bearing capacity of the new anchor cable steel beam, and solve the problem of in-plane instability that is prone to traditional channel steel, flat steel, U-shaped steel, I-beam, etc.

[0039] Optionally, at least two first bending structures 12 are provided, and the two first bending structures 12 are symmetrically distributed on both sides of the anchor hole 11. This symmetrical layout can ensure that the deformation of the steel beam under the action of external force is more uniform, avoid local stress concentration, and thus improve the overall bending resistance; and will not affect the passage of the anchor.

[0040] Specifically, the two first bending structures 12 are symmetrically distributed on both sides of the anchor hole 11. This layout can ensure that the external force is evenly distributed in the width direction, avoiding the problem of local stress concentration. When the external force acts on the steel beam, the first bending structures 12 on both sides will share the load, avoiding the situation where one side is subjected to excessive force. This helps to reduce fatigue damage to the material and extend the service life of the steel beam. In addition, the symmetrical layout of the first bending structures 12 makes inspection and maintenance work more convenient, and potential problems can be more easily discovered and dealt with.

[0041] Preferably, the first bent structures 12 are symmetrically distributed on both sides of the anchor hole 11, and a certain distance is maintained between them to ensure that the anchor cable can pass smoothly through the anchor hole 11. This design not only does not affect the installation and use of the anchor cable, but also can be used with the existing anchor cable tray to provide additional support and enhance the structural strength around the anchor hole 11. The shape and size of the anchor hole 11 can be adjusted according to actual needs to accommodate anchor cables of different diameters and types.

[0042] In this embodiment, the first bending structure 12 and the second bending structure 21 increase the "virtual" material distribution of the material, improve the local stiffness, and significantly improve the bending resistance of the area, ensuring that the steel beam is not prone to bending and deformation when subjected to large external forces; the first bending structure 12 and the second bending structure 21 can be pre-processed in the factory to ensure consistency in size and shape, facilitating rapid on-site installation. This prefabricated design can improve construction efficiency and reduce on-site processing time and cost.

[0043] like Figure 1-Figure 2 As shown, the first bending structure 12 is a V-shaped groove or an arc-shaped groove, with the openings all facing the same direction, such as upward, and the size is determined according to actual needs. In this configuration, the bending structure helps increase the "virtual" material distribution of the material and improve local stiffness. The V-shaped groove design can increase the cross-sectional area, while the arc-shaped groove can better disperse stress and reduce the risk of fatigue damage.

[0044] It should be noted that the first bending structure 12 includes but is not limited to a V-shaped groove and an arc-shaped groove, and other shapes that can achieve the above-mentioned effects are within the protection scope.

[0045] Optionally, a plurality of second bending structures 21 are formed on the second connecting plate 2 in a continuous bending shape, such as Figure 3-Figure 5 As shown, the second bending structure 21 includes but is not limited to a wavy V-shaped groove, an arc-shaped groove or a trapezoidal groove. For example, the cross-sectional waveform of the second connecting plate 2 is a sine waveform, and the size is determined according to actual needs.

[0046] Optionally, the thickness d of the first connecting plate 1 and the second connecting plate 2 is 3-10 mm, the width of the first connecting plate 1 is 340-360 mm, the height h of the second bending structure is 35-50 mm, and the width b of the second bending structure is 70-150 mm.

[0047] In some embodiments, as Figure 6 As shown, the thickness d of the second connecting plate 2 is 5 mm, the second bending structure 21 is a V-shaped groove, the width b of the V-shaped groove is 87.5 mm, the height h is 36 mm, and the included angle is an obtuse angle.

[0048] In some embodiments, as Figure 7 As shown, the thickness d of the second connecting plate 2 is 3 mm, the second bending structure 21 is a trapezoidal groove, the bottom width of the trapezoidal groove is 57 mm, the height h is 43 mm, and the bending part is an arc transition.

[0049] In some embodiments, as Figure 8 As shown, the thickness d of the second connecting plate 2 is 3 mm, the cross section of the second bending structure 21 is sinusoidal with an arc-shaped groove, and the distance between the crest and the trough is 75 mm, that is, the length of a complete waveform is 150 mm and the height h is 48 mm.

[0050] The installation process of a new type of anchor steel beam provided in this embodiment is: the first upper connecting plate is arranged parallel to the top of the first lower connecting plate, and a pair of second connecting plates 2 are arranged between the first upper connecting plate and the first lower connecting plate to play a supporting and connecting role. The top ends of the second left connecting plate and the second right connecting plate are respectively vertically connected to the two ends of the first upper connecting plate, and the bottom ends of the second left connecting plate and the second right connecting plate are respectively vertically connected to the two ends of the first lower connecting plate. The second left connecting plate and the second right connecting plate are fixed in the space between the first upper connecting plate and the first lower connecting plate by welding the upper and lower ends, thereby forming a box beam structure with a rectangular cross-section, and the anchor cable is passed through the anchor cable holes 11 reserved on the first upper connecting plate and the first lower connecting plate, and anchored and installed in conjunction with the anchor cable tray.

[0051] By adjusting the size, position, number and shape of the bending structures of the first connecting plate 1 and the second connecting plate 2, a customized design can be made according to actual engineering needs to meet the application requirements of different scenarios; the first connecting plate 1 and the second connecting plate 2 rely on their own high-strength steel materials and increased "virtual" material distribution to improve the diffusion range of the anchor preload and the bending bearing capacity of the new anchor steel beam, avoiding the situation where traditional channel steel, flat steel, U-shaped steel, I-beam and the like are prone to instability in the plane. The second connecting plate 2 improves its own "virtual" material distribution through the corrugated second bending structure 21, and its bending bearing capacity is also greatly improved compared to ordinary straight web members. When subjected to the squeezing effect of the tunnel roof, the new anchor steel beam relies on its own high cross-sectional stiffness to effectively reduce the deformation of the roof, thereby effectively ensuring the safe production of the coal mine.

[0052] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without contradiction.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A new type of anchor cable steel beam, characterized in that: include: A pair of first connecting plates (1), wherein the first connecting plates (1) are provided with a plurality of anchor holes (11) along their length direction, and the first connecting plates (1) are provided with a plurality of first bending structures (12) along their width direction, and the first bending structures (12) are distributed on both sides of the anchor holes (11); A pair of second connecting plates (2), wherein the second connecting plates (2) are provided with a plurality of second bending structures (21) along their length direction, and the second connecting plates (2) and the first connecting plates (1) are connected to each other to form a box beam structure with a rectangular cross section.

2. The new anchor cable steel beam according to claim 1 is characterized in that: At least two of the first bending structures (12) are provided, and the two first bending structures (12) are symmetrically distributed on both sides of the anchor hole (11).

3. The new anchor cable steel beam according to claim 1 is characterized in that: A plurality of the second bending structures (21) are formed on the second connecting plate (2) in a continuous bending shape.

4. The new anchor cable steel beam according to claim 1 is characterized in that: The second connecting plate (2) is connected to the first connecting plate (1) by welding.

5. The new anchor cable steel beam according to claim 2 is characterized in that: The first bending structure (12) is a V-shaped groove or an arc-shaped groove.

6. The new anchor cable steel beam according to claim 3 is characterized in that: The second bending structure (21) is a V-shaped groove, an arc-shaped groove or a trapezoidal groove.

7. The new anchor cable steel beam according to claim 6, characterized in that: The height h of the second bending structure (21) is 35-50 mm.

8. The new anchor cable steel beam according to claim 6, characterized in that: The width b of the second bending structure (21) is 70-150 mm.

9. The new anchor cable steel beam according to claim 1, characterized in that: The width of the first connecting plate (1) is 340-360 mm.

10. The new anchor cable steel beam according to claim 1, characterized in that: The thickness d of the first connecting plate (1) and the second connecting plate (2) are both 3-10 mm.

Images