A rapid support structure for coal mine roadways

Abstract

This utility model discloses a rapid support structure for coal mine roadways, relating to the field of coal mine support technology. It includes multiple side support plates, with a top support plate positioned between every two side support plates. Locking blocks are embedded at one end of each side support plate and at both ends of the top support plate. A connecting screw is fixedly connected to the bottom of each locking block. An arc-shaped plate is provided at the connection between the side support plate and the top support plate. A locking bolt is threaded to the bottom of the connecting screw. A base plate is fixedly connected to the other end of each side support plate. This rapid support structure for coal mine roadways, by using multiple side support plates in conjunction with the central top support plate, facilitates the overall movement and assembly of the support structure. It is easy to quickly assemble within the coal mine roadway and can be disassembled and reused multiple times, resulting in high utilization. The arc-shaped plate, combined with the connecting screw and locking bolt, greatly enhances assembly stability and structural strength at the connection gaps, making assembly convenient.

Description

Technical Field

[0001] This utility model relates to the field of coal mine support technology, and in particular to a rapid support structure for coal mine roadways. Background Technology

[0002] my country's coal mines are mainly mined underground, requiring the excavation of numerous tunnels. The use of tunnel support to maintain tunnel access and surrounding rock stability is of great significance to coal mine construction and production.

[0003] The basic purpose of roadway support is to mitigate and reduce the movement of surrounding rock, prevent the roadway cross-section from shrinking excessively, and prevent the collapse of scattered and damaged surrounding rock. However, the effectiveness of roadway support depends not only on the bearing capacity of the support itself, but also on a series of factors such as the properties of the surrounding rock, the mechanical properties of the support (bearing capacity and compressibility), the density of the support installation, the timing of the support installation, the quality of the support installation, and the contact method with the surrounding rock (point contact or surface contact).

[0004] The existing coal mine support structure is relatively complete, resulting in large structural dimensions, inconvenient movement and transportation, and inconvenient installation in coal mine roadways. Moreover, it requires destructive dismantling after current use, affecting its future utilization rate. In addition, the anchor bolts of the coal mine support are prone to damage under pressure, and there is no corresponding buffer structure. Furthermore, when the anchor bolts move under pressure, even a small amount of movement may not attract attention, but could potentially lead to a major safety accident later on. Utility Model Content

[0005] The purpose of this utility model is to provide a rapid support structure for coal mine roadways to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rapid support structure for coal mine roadways, comprising multiple side support plates, with a top support plate provided between every two side support plates. Locking blocks are embedded at one end of each side support plate and at both ends of each top support plate. A connecting screw is fixedly connected to the bottom end of each locking block. An arc-shaped plate is provided at the connection between the side support plate and the top support plate. A locking bolt is threaded to the bottom of the connecting screw. A base plate is fixedly connected to the other end of each side support plate, and locking rods penetrate both ends of the base plate.

[0007] Multiple reinforcing anchors are fixedly inserted into the side support plate and the top support plate. A reinforcing sleeve is fitted at the bottom of the reinforcing anchor. A plug is provided inside the reinforcing sleeve. A fracture plate is provided at one end of the reinforcing sleeve.

[0008] As a preferred embodiment of this utility model, a groove is provided at one end of the side support plate, and protrusions are fixedly provided at both ends of the top support plate, with the protrusions engaging with the groove.

[0009] The above technical solution allows for the initial assembly and connection of the side support plates and the top support plates, thereby reducing the assembly difficulty of the support structure.

[0010] As a preferred embodiment of this utility model, the middle portions of the plurality of connecting screws respectively movably penetrate the top support plate and the side support plate, and the bottom of the connecting screws movably penetrates the arc-shaped plate.

[0011] Through the above technical solution, the connecting screw penetrates through the support plate and finally through the arc-shaped plate, and the connection is reinforced on the inside of the arc-shaped plate with locking bolts.

[0012] As a preferred embodiment of this utility model, the top surface of the locking bolt is attached to the bottom surface of the arc-shaped plate, and the middle part of the arc-shaped plate is attached to the connection gap between the top support plate and the side support plate.

[0013] With the above technical solution, after the locking bolt is screwed in, its top surface is in close contact with the arc-shaped plate, so the connection is fully stable. The arc-shaped plate can thicken the connection gap, thereby strengthening the connection gap.

[0014] As a preferred embodiment of this utility model, the side wall of the reinforcing sleeve is fixedly connected to a mounting base, and the mounting base is welded and fixed to the inner wall of the side support plate.

[0015] The above technical solution strengthens the stability of the bottom of the reinforced anchor rod and improves the stability of the reinforced anchor rod when it penetrates deep into the surrounding rock.

[0016] As a preferred embodiment of this utility model, the reinforcing sleeve is welded and fixed to the reinforcing anchor rod, and the plug is welded and fixed to the reinforcing sleeve.

[0017] Although the above technical solution provides a stable welded connection and can achieve a reinforcement effect, the welded surface is limited and the stability is limited. When the surrounding rock pressure is too high, the welding force will be broken first, causing the reinforced anchor rod to shift.

[0018] As a preferred embodiment of this utility model, one side wall of the fracture plate is bonded and fixed to the bottom end of the reinforcing sleeve.

[0019] The above technical solution uses easily breakable materials such as thin wood or thin plastic boards, which will break when subjected to uneven stress.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model, by setting multiple side support plates and cooperating with the central top support plate, facilitates the overall movement and assembly of the support, making it easy to quickly assemble in coal mine roadways. It can also be disassembled and transferred multiple times for reuse, resulting in high utilization. The arc-shaped plate, together with the connecting screws and locking bolts, can greatly enhance the assembly stability and strengthen the structural strength at the connection gaps, making assembly convenient.

[0022] This invention, by setting multiple reinforcing anchor rods with a reinforcing sleeve at the bottom, along with a plug and fracture plate inside the sleeve, can enhance the stability of the reinforcing anchor rods and increase the support effect of the support structure. When the reinforcing anchor rod is subjected to strong compressive force and moves downward, even a small displacement can be visually indicated by the brittle and easily broken nature of the fracture plate. Therefore, the operator can know that the reinforcing anchor rod has been displaced by the downward pressure when observing the fracture fragments of the fracture plate, and should promptly detect and reinforce it to eliminate the risk of collapse. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the reinforced anchor rod of this utility model;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure at point A in the middle.

[0026] In the diagram: 1. Side support plate; 2. Top support plate; 3. Bottom plate; 4. Locking rod; 5. Arc plate; 6. Locking block; 7. Protrusion; 8. Connecting screw; 9. Locking bolt; 10. Reinforcing anchor; 11. Reinforcing sleeve; 12. Mounting base; 13. Block; 14. Fracture plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 3 This utility model provides a technical solution for a rapid support structure for coal mine roadways: Example 1

[0029] according to Figure 1 , Figure 2As shown, a rapid support structure for coal mine roadways includes multiple side support plates 1, with a top support plate 2 between every two side support plates 1. Locking blocks 6 are embedded at one end of the side support plate 1 and at both ends of the top support plate 2. A connecting screw 8 is fixedly connected to the bottom end of the locking block 6. The outer surface of the connecting screw 8 is threaded. An arc-shaped plate 5 is provided at the connection between the side support plate 1 and the top support plate 2. A locking bolt 9 is threadedly connected to the bottom of the connecting screw 8. A base plate 3 is fixedly connected to the other end of the side support plate 1. Locking rods 4 pass through both ends of the base plate 3.

[0030] A groove is provided at one end of the side support plate 1, and protrusions 7 are fixedly provided at both ends of the top support plate 2. The protrusions 7 are engaged with the groove. The middle parts of multiple connecting screws 8 respectively movably pass through the top support plate 2 and the side support plate 1. The bottom of the connecting screws 8 movably passes through the arc plate 5. The top surface of the locking bolt 9 is attached to the bottom surface of the arc plate 5. The middle part of the arc plate 5 is attached to the connection gap between the top support plate 2 and the side support plate 1.

[0031] In practical use, this utility model of a rapid support structure for coal mine roadways involves the operator assembling the top support plate 2 between every two side support plates 1 during installation. Specifically, the operator first uses the groove at one end of the side support plate 1 to engage with the protrusions 7 at both ends of the top support plate 2, achieving initial fixation of the top support plate 2. Then, the connecting screw 8 is inserted and, with the locking block 6, abuts against the upper surface of the support plate. Next, the connecting screw 8 extends to the lower surface of the support plate and through the arc-shaped plate 5. At this point, the locking bolt 9 can be screwed in to reinforce the side support plates. The connection strength between the support plate 1 and the top support plate 2 is improved, and the connection gap is shielded and protected to enhance the structural strength of the connection gap. Then, the constructed support structure is placed on the bottom surface of the coal mine roadway with the help of the bottom plate 3. With the help of the locking rod 4, a tight connection is achieved by inserting it into the ground, which improves the stability of the bottom plate 3 and thus improves the stability of the side support plate 1. In this way, the top support plate 2 can be closely supported on the inner top wall of the coal mine roadway and multiple reinforcing anchor rods 10 are inserted through to the inner wall of the coal mine roadway to achieve reinforced support. Example 2

[0032] Based on Example 1, such as Figure 1 and Figure 3As shown, multiple reinforcing anchor rods 10 are fixedly inserted on the side support plate 1 and the top support plate 2. A reinforcing sleeve 11 is fitted at the bottom of the reinforcing anchor rod 10. A blocking block 13 is installed inside the reinforcing sleeve 11. A fracture plate 14 is installed at one end of the reinforcing sleeve 11. The fracture plate 14 is made of easily breakable materials such as thin wood or thin plastic. It will break when the stress is uneven. An installation seat 12 is fixedly connected to the side wall of the reinforcing sleeve 11. The installation seat 12 is welded to the inner wall of the side support plate 1. The reinforcing sleeve 11 is welded to the reinforcing anchor rod 10. The blocking block 13 is welded to the reinforcing sleeve 11. Although the welded connection is stable and can achieve the reinforcement effect, the weld surface is limited and the stability is limited. When the surrounding rock pressure is too high, the weld force will be broken first, causing the reinforcing anchor rod 10 to shift. One side wall of the fracture plate 14 is bonded to the bottom end of the reinforcing sleeve 11.

[0033] In practical use, this utility model of a rapid support structure for coal mine roadways involves driving in multiple reinforcing anchor bolts 10 and welding them to a support plate. A reinforcing sleeve 11 is then fitted onto the bottom, and the sleeve 11 is welded to the inner wall of the support plate via a mounting base 12. The reinforcing sleeve 11 is then welded to the reinforcing anchor bolts 10. Next, a plug 13 is inserted into the reinforcing sleeve 11 and welded to it. Finally, a fracture plate 14 is bonded to the reinforcing sleeve 11. This method provides a more stable connection between the reinforcing anchor bolts 10 and the support plate. When the anchor bolts are pressed down and move, the reinforcing sleeve 11 will shift and move. Pushing the block 13 outward, when the deformation and movement are small, it is not easy to observe with the naked eye. However, since the fracture plate 14 is initially attached and fixed to the surface of the reinforcing sleeve 11, even if the block 13 at the center extends out slightly, it will cause the fracture plate 14 to be subjected to uneven force, thus causing it to break. The surface of the fracture plate 14 is sprayed with bright colors, so when it breaks and falls to the ground, the operator can easily observe the breakage of the fracture plate 14. Therefore, when the fragments of the fracture plate 14 occur, it indicates that the block 13 has been displaced relative to the reinforcing sleeve 11. In this case, the surface reinforcing anchor 10 is subjected to excessive force, and it should be inspected and reinforced in time to eliminate the risk of collapse.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

Claims

1. A rapid support structure for a coal mine roadway comprising a plurality of side support plates (1), characterised in that: A top support plate (2) is provided between every two side support plates (1). A locking block (6) is embedded at one end of the side support plate (1) and at both ends of the top support plate (2). A connecting screw (8) is fixedly connected to the bottom end of the locking block (6). An arc plate (5) is provided at the connection between the side support plate (1) and the top support plate (2). A locking bolt (9) is threaded to the bottom of the connecting screw (8). A bottom plate (3) is fixedly connected to the other end of the side support plate (1). A locking rod (4) passes through both ends of the bottom plate (3). Multiple reinforcing anchors (10) are fixedly inserted on the side support plate (1) and the top support plate (2). A reinforcing sleeve (11) is fitted at the bottom of the reinforcing anchor (10). A block (13) is provided inside the reinforcing sleeve (11). A fracture plate (14) is provided at one end of the reinforcing sleeve (11).

2. The rapid roadway support structure of claim 1, wherein: The side support plate (1) has a groove at one end, and the top support plate (2) has protrusions (7) fixed at both ends, which engage with the groove.

3. The rapid roadway support structure of claim 1, wherein: The middle portions of the multiple connecting screws (8) respectively movably penetrate the top support plate (2) and the side support plate (1), and the bottom of the connecting screws (8) movably penetrates the arc-shaped plate (5).

4. The rapid roadway support structure of claim 1, wherein: The top surface of the locking bolt (9) is attached to the bottom surface of the arc plate (5), and the middle part of the arc plate (5) is attached to the connection gap between the top support plate (2) and the side support plate (1).

5. The rapid roadway support structure of claim 1, wherein: The side wall of the reinforcing sleeve (11) is fixedly connected to a mounting base (12), and the mounting base (12) is welded and fixed to the inner wall of the side support plate (1).

6. The rapid roadway support structure of claim 1, wherein: The reinforcing sleeve (11) is welded and fixed to the reinforcing anchor rod (10), and the plug (13) is welded and fixed to the reinforcing sleeve (11).

7. The rapid roadway support structure of claim 1, wherein: One side wall of the fracture plate (14) is bonded and fixed to the bottom end of the reinforcing sleeve (11).

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