A ripping-preventing anchor-mesh post cantilever beam of a heading machine

Abstract

The utility model discloses a kind of ripping anchor net rear cantilever of heading machine, it is related to the technical field of mine mining equipment, including rear beam and the anchor net limiting structure being set to the top of rear beam, the anchor net limiting structure includes several limit plate being set along heading direction, the top surface of limit plate is gradually reduced in height towards heading direction;The utility model can avoid limit plate hooking anchor net in the process of heading by designing the arc gradual heading top surface including high position end and low position end, and further solve the problem that limit structure rips anchor net, guarantee the safety and stability of supported anchor net;With simple structure and low material cost, reduce the total cost of supporting equipment damage replacement, with higher economy;Improve the convenience and flexibility of construction;Greatly reduce the probability of anchor net being torn.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and in particular to a tear-resistant anchor mesh rear cantilever beam for a tunneling machine. Background Technology

[0002] In coal mine roadway excavation, the design and support technology of the onboard anchor drilling rig for tunneling machines (TBMs) are crucial. This technology combines simulation analysis with experimental research, taking into account the actual conditions and rock hardness of coal mine roadways in my country, to complete the research on the onboard anchor drilling rig for TBMs and the support methods. As TBMs gradually replace tunneling machines (TBMs) as the main equipment for coal mine roadway excavation, the application of onboard anchor devices on TBMs is becoming increasingly widespread. During the TBM's excavation process, it needs to support the roadway roof while excavating. When the TBM completes its excavation task in its current area, the TBM system uses the anchor mesh fixed on its rear beam to support the roof. After the support is completed, the TBM continues to advance. The rear beam limiting structure usually adopts a design with a cone-shaped upper part and a cylinder-shaped lower part. This design is prone to snagging on the mesh of the anchor mesh during the TBM's advance, which can lead to the rear beam limiting structure tearing the anchor mesh, thus affecting operational efficiency and safety.

[0003] Therefore, providing a cantilever beam behind the anti-tear anchor mesh of a tunneling machine is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a rear cantilever beam for the anti-tear anchor mesh of a tunneling machine to solve the problems existing in the prior art. It can simultaneously ensure the stability and support strength of the anchor mesh supporting the roof plate, ensure the working efficiency of the tunneling machine, solve the problem of tearing of the anchor mesh in the limiting structure, and also significantly reduce the labor intensity of workers and improve the efficiency and safety of construction.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a rear cantilever beam for a tunneling machine with an anti-tear anchor mesh, including a rear beam and an anchor mesh limiting structure disposed on the top of the rear beam. The anchor mesh limiting structure includes a plurality of limiting plates disposed along the tunneling direction, and the top surface of the limiting plates gradually decreases in height towards the tunneling direction.

[0006] In some embodiments, the limiting plate includes a high end and a low end, and the high end and the low end are connected by an arc-shaped surface whose height gradually decreases in the direction of excavation.

[0007] In some embodiments, a buffer pad is provided between the high end and the anchor net.

[0008] In some embodiments, an anchor mesh fixing clamp is also included, which is installed on the rear beam for fixing the anchor mesh.

[0009] The present invention achieves the following technical advantages over the prior art: The anti-tear anchor mesh rear cantilever beam of this utility model, through the design of an arc transition between the high and low ends of the tunneling top surface, can prevent the limiting plate from snagging on the anchor mesh during tunneling, thereby solving the problem of the limiting structure tearing the anchor mesh and ensuring the safety and stability of the supported anchor mesh. This utility model, by improving the limiting structure on the rear beam of the tunneling machine, ensures the integrity of the anchor mesh during tunneling, while also guaranteeing the strength of the anchor mesh support and improving work efficiency. It features a simple structure and low material costs, reducing the total cost of replacing damaged support equipment and possessing high economic efficiency. It also enhances the convenience and flexibility of construction and significantly reduces the probability of the anchor mesh being torn. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the tunneling machine in this utility model; Figure 2 This is a schematic diagram of the limiting state structure of the anchor mesh by the rear beam of the tunneling machine in this utility model; Figure 3 This is a schematic diagram of the limiting plate in this utility model; In the diagram: 1. Drill bit; 2. Front probe beam; 3. Rear beam; 4. Anchor mesh; 5. Limiting plate; 6. Arc-shaped surface; 7. High end; 8. Low end. Detailed Implementation

[0012] 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.

[0013] The purpose of this invention is to provide a cantilever beam behind the anti-tear anchor mesh of a tunneling machine to solve the problems existing in the prior art.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] In this embodiment, the tunneling machine's anti-tear anchor mesh rear cantilever beam, such as... Figures 1-2 As shown, it includes a rear beam 3 and an anchor mesh limiting structure set on the top of the rear beam 3. The anchor mesh limiting structure includes several limiting plates 5 set along the tunneling direction, and the top surface of the limiting plates 5 gradually decreases in height towards the tunneling direction.

[0016] In some embodiments, the limiting plate 5 includes a high end 7 and a low end 8, with an arc-shaped surface 6 between the high end 7 and the low end 8 that gradually decreases in height towards the tunneling direction. Positioning the limiting plate 5 on the arc-shaped transition surface from the high to the low end ensures that as the tunneling machine approaches, the limiting plate 5 can both limit the anchor mesh 4 through the high end 7 and prevent it from hooking into the mesh openings of the anchor mesh 4 due to the presence of the low end 8 and the arc-shaped surface 6, thus preventing the anchor mesh 4 from tearing.

[0017] In some embodiments, a buffer pad (not shown in the figure) is provided between the high end 7 and the anchor mesh 4. The buffer pad is preferably a rubber pad, which helps to reduce friction between the anchor mesh 4 and the limiting plate 5, reduce wear, and extend the service life of the anchor mesh 4 and the limiting plate 5. By reducing friction and wear, the buffer pad helps to protect the anchor mesh 4 from tearing or damage, ensuring the integrity of the anchor mesh 4.

[0018] In some embodiments, an anchor mesh fixing clamp is also included, which is installed on the rear beam 3 to fix the anchor mesh 4. The fixing clamp can automatically release the anchor mesh 4 during tunneling machine advancement, reducing manual intervention and improving the automation level of the operation. The automatic release mechanism prevents the anchor mesh 4 from being hooked by the limiting plate 5, reducing the risk of damage to the anchor mesh 4 and tunneling machine malfunction due to hooking. Increased tunneling speed: Because the anchor mesh 4 can be released in a timely manner, time wasted due to dealing with hooking problems is avoided, thereby accelerating the tunneling speed. It should be noted that the anchor mesh fixing clamp is a commonly used clamp in this field, and its structural principle will not be elaborated upon.

[0019] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cantilever beam with an anti-tear anchor mesh for a tunneling machine, characterized in that: It includes a rear beam and an anchor mesh limiting structure disposed on the top of the rear beam. The anchor mesh limiting structure includes several limiting plates disposed along the tunneling direction, and the top surface of the limiting plates gradually decreases in height towards the tunneling direction.

2. The cantilever beam of the anti-tear anchor mesh for tunneling machines according to claim 1, characterized in that: The limiting plate includes a high end and a low end, and the area between the high end and the low end is an arc-shaped surface whose height gradually decreases in the direction of excavation.

3. The cantilever beam of the anti-tear anchor mesh for tunneling machines according to claim 2, characterized in that: A buffer pad is provided between the high end and the anchor net.

4. The cantilever beam of the anti-tear anchor mesh for tunneling machines according to claim 1, characterized in that: It also includes an anchor mesh fixing clamp, which is installed on the rear beam to fix the anchor mesh.

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