A high-strength TBM toolbox

Abstract

This utility model discloses a high-strength TBM toolbox, belonging to the technical field of TBM toolboxes. The key technical features are: a substrate with a transition layer on its surface, a wear-resistant layer on the surface of the transition layer, and two reinforcing strips fixedly connected to each side of the substrate surface. Each reinforcing strip has grooves on both sides and is of a quasi-I-shape structure. The two reinforcing strips together form a quasi-cross space, which is filled with the transition layer. This design improves the connection strength between the wear-resistant layer and the substrate, enhancing the strength of the TBM toolbox.

Description

Technical Field

[0001] This utility model relates to the field of TBM toolbox technology, specifically a high-strength TBM toolbox. Background Technology

[0002] As the core load-bearing component of the tooling system, the crack resistance and overall strength of the TBM toolbox directly affect construction efficiency and equipment lifespan. The traditional method to enhance the strength of the TBM toolbox is to directly weld a wear-resistant layer onto the TBM toolbox. However, existing TBM toolboxes are integrally molded, and their carbon content differs significantly from that of the wear-resistant layer material. When welding the wear-resistant layer, carbon migration is likely to occur, leading to stress concentration at the interface between the substrate and the wear-resistant layer, which can cause cracks and make the wear-resistant layer prone to peeling off. Therefore, a high-strength TBM toolbox is needed. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide a high-strength TBM tool box, which improves the connection strength between the wear-resistant layer and the substrate and enhances the strength of the TBM tool box.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-strength TBM toolbox, comprising a substrate, a transition layer provided on the surface of the substrate, a wear-resistant layer provided on the surface of the transition layer, two reinforcing strips fixedly connected to each side of the surface of the substrate, each reinforcing strip having a groove on both sides, and the reinforcing strip having an I-shaped structure, the two reinforcing strips together forming a cross-shaped space, the cross-shaped space being filled with the transition layer.

[0005] In some embodiments, one side of the groove is set as a short side and the other side is set as a long side.

[0006] In some embodiments, the end of the short side is bent toward the base.

[0007] In some embodiments, the end of the long side is provided with a bevel.

[0008] In some embodiments, the transition layer is made of low-alloy steel.

[0009] In some embodiments, holes are provided on the substrate near the reinforcing strip.

[0010] In summary, this utility model has the following beneficial effects:

[0011] This invention achieves a smooth transition of mechanical properties between the substrate and the wear-resistant layer through multi-layer welding, avoiding carbon migration and electrochemical corrosion. It has excellent crack resistance, effectively preventing cracks from propagating into the substrate and enhancing the bonding strength between the substrate and the wear-resistant layer, thereby improving the overall strength of the toolbox. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention;

[0013] Figure 2 This is a top view of the present invention;

[0014] Figure 3 This is a partial structural schematic diagram of the present invention.

[0015] In the diagram: 1. Substrate; 11. Reinforcing strip; 111. Groove; 112. Short side; 113. Long side; 12. Hole; 2. Transition layer; 3. Wear-resistant layer. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "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 this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0019] See Figure 1-3A high-strength TBM toolbox includes a base 1, a transition layer 2 on the surface of the base 1, a wear-resistant layer 3 on the surface of the transition layer 2, and two reinforcing strips 11 fixedly connected to each side of the surface of the base 1. Each reinforcing strip 11 has a groove 111 on both sides, and the reinforcing strip 11 has an I-shaped structure. The two reinforcing strips 11 together form a cross-shaped space, which is filled with the transition layer 2.

[0020] Using the above scheme, the operator welds the reinforcing strip 11 to the base 1, and then welds the transition layer 2 to the surface of the base 1. The transition layer 2 fills the cross-shaped space formed by the two reinforcing strips 11, thereby using the two reinforcing strips 11 to partially restrict the transition layer 2, making the connection between the transition layer 2 and the base 1 more stable, and ensuring the integrity of the base 1 and the transition layer 2. The transition layer 2 can use low-carbon, low-alloy materials such as E71 welding wire as the filler material, but is not limited to this. Finally, the wear-resistant layer 3 is welded to the transition layer 2. Through the multi-layer welding method, the mechanical properties of the base 1 and the wear-resistant layer 3 are smoothly transitioned, avoiding carbon migration and electrochemical corrosion. It has excellent crack resistance and can effectively prevent cracks from propagating to the base 1, enhance the bonding strength between the base 1 and the wear-resistant layer 3, and thus improve the strength of the entire toolbox.

[0021] In some embodiments, one side of the groove 111 is set as a short side 112 and the other side is set as a long side 113. The two sides of the groove 111 are designed to be one long and one short, so that when the transition layer 2 is welded to the substrate 1, it can be ensured that the transition layer 2 is completely filled in the groove 111, and the connection between the transition layer 2 and the substrate 1 is ensured.

[0022] In some embodiments, the end of the short side 112 is bent toward the substrate 1. The bending of the end of the short side 112 by hammering can cause the reinforcing strip 11 to exert pressure on the transition layer 2, thereby improving the connection between the substrate 1 and the transition layer 2.

[0023] In some embodiments, the end of the long side 113 is provided with a bevel. The bevel ensures that the transition layer 2 does not have a break on the long side 113 when it is filled, thus ensuring that the transition layer 2 is an integral structure and improving the connection strength between the transition layer 2 and the substrate 1.

[0024] In some embodiments, the transition layer 2 is made of low-alloy steel. The transition layer 2 uses low-alloy steel as its base material, and its carbon content is close to that of the alloy structural steel of the toolbox substrate 1, which can effectively reduce welding cracks and stress concentration.

[0025] In some embodiments, a hole 12 is provided on the substrate 1 near the reinforcing strip 11. The hole 12 can increase the connection depth between the transition layer 2 and the substrate 1, thereby making the connection between the wear-resistant layer 3 and the substrate 1 more solid and ensuring the overall strength of the substrate 1.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A high-strength TBM toolbox, characterized in that: The substrate (1) includes a transition layer (2) on its surface and a wear-resistant layer (3) on its surface. Two reinforcing strips (11) are fixedly connected to each side of the surface of the substrate (1). Each reinforcing strip (11) has a groove (111) on both sides. The reinforcing strip (11) has an I-shaped structure. The two reinforcing strips (11) together form a cross-shaped space, which is filled with the transition layer (2).

2. The high-strength TBM toolbox according to claim 1, characterized in that: One side of the groove (111) is set as a short side (112), and the other side is set as a long side (113).

3. A high-strength TBM toolbox according to claim 2, characterized in that: The end of the short side (112) is bent toward the base (1).

4. A high-strength TBM toolbox according to claim 2, characterized in that: The end of the long side (113) is provided with a bevel.

5. A high-strength TBM toolbox according to claim 1, characterized in that: The transition layer (2) is made of low alloy steel.

6. A high-strength TBM toolbox according to claim 1, characterized in that: A hole (12) is provided on the substrate (1) near the reinforcing strip (11).

Images