TMB cutter box

Abstract

The utility model relates to the technical field of cutter boxes, and provides a TMB cutter box which comprises a cutter box inner plate, a cutter box outer plate and a transition area in a three-layer composite mode, the transition area is a low-carbon layer, the low-carbon layer is arranged on the cutter box outer plate in a surfacing mode, the cutter box inner plate is connected with the cutter box outer plate in a welded mode, and the cutter box inner plate is connected with the cutter box outer plate in a welded mode. The mode that a layer of transition area structure is additionally arranged between the cutter box inner plate and the cutter box outer plate is adopted, and a low-carbon layer is overlaid in the pre-machining process, so that severe temperature changes generated when the cutter box inner plate and the cutter box outer plate are welded are buffered, welding cracks are prevented, and meanwhile welding deformation is reduced; and the low-carbon transition layer plays a good role in buffering temperature change and stress, so that the risk of welding cracks is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of knife boxes, in particular to a TMB knife box. Background Art

[0002] TBM, also known as tunnel boring machine, is a commonly used tunnel boring equipment in the world. It is widely used all over the world because of its fast construction speed, high quality, high safety and small disturbance to the stratum. TBM cutter box is a structural part composed of inner plate and outer plate assembled and welded. At present, when processing TBM cutter box, the inner plate and outer plate are generally processed first, and then the processed inner plate and outer plate are directly welded. In this way, during the processing, the inner plate is easy to deform during the welding process.

[0003] In view of this, this application is hereby filed. Utility Model Content

[0004] The present application proposes a TBM tool box to solve the technical problem that in the prior art, when processing a TBM tool box, the inner plate and the outer plate are generally processed first, and then the processed inner plate and the outer plate are directly welded, so that during the processing, the inner plate is easily deformed during the welding process. The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A TMB knife box, comprising a three-layer composite form of a knife box inner plate, an outer plate and a transition zone, wherein the low-carbon layer is arranged between the outer plate and the inner plate by surfacing welding, the low-carbon layer is arranged on the outer plate by surfacing welding, and the inner plate and the outer plate are welded together.

[0006] Preferably, the tool box inner plate material is 30Cr2Ni2Mo alloy structural steel material.

[0007] Preferably, the outer plate of the knife box is made of high-toughness wear-resistant steel material.

[0008] Preferably, the side cross-section of the knife box outer plate is in an N-shape.

[0009] Preferably, the inner wall of the recessed portion of the knife box outer plate is chamfered.

[0010] Preferably, the inner wall of the knife box inner plate facing the recess of the knife box outer plate is provided with an oblique angle.

[0011] Compared with the prior art, the beneficial effects of the present invention include:

[0012] By adding a transition zone structure between the inner plate and the outer plate of the tool box, a low-carbon layer is welded during the pre-processing process to buffer the drastic temperature changes during welding of the inner plate and the outer plate of the tool box, prevent welding cracks, and reduce welding deformation. When the inner plate and the outer plate of the tool box are welded first and then the cavity is milled, the low-carbon transition layer plays a good role in buffering temperature changes and stress, reducing the risk of welding cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the low carbon layer of the inner plate of the knife box of the utility model;

[0015] Figure 3 This is a schematic diagram of the low carbon layer of the outer plate of the knife box of the utility model;

[0016] In the figure: 1. Inner plate of knife box; 2. Outer plate of knife box; 3. Low carbon layer. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0020] Please see attached Figure 1-3 A TMB knife box includes a three-layer composite form of a knife box inner plate, a knife box outer plate and a transition zone. The transition zone is a low-carbon layer, and the low-carbon layer is arranged between the knife box outer plate and the knife box inner plate by surfacing. The knife box inner plate and the knife box outer plate are welded and connected. The side cross-section of the knife box outer plate is in an N shape, and the inner wall of the recessed part of the knife box outer plate is provided with a chamfer, and the inner plate of the knife box is provided with an oblique angle toward the inner wall of the recessed part of the knife box outer plate.

[0021] By adopting the above technical scheme, a transition zone structure is added between the inner plate and the outer plate of the tool box, and a low-carbon layer is welded during the pre-processing process to buffer the drastic temperature changes during welding of the inner plate and the outer plate of the tool box, prevent welding cracks, and reduce welding deformation. When the inner plate and the outer plate of the tool box are first welded and then the cavity is milled, the low-carbon transition layer plays a good role in buffering temperature changes and stress, reducing the risk of welding cracks, and after welding, stress relief annealing is performed, and there is no processing deformation in the tool box cavity, so that the processing efficiency of the tool box cavity can be greatly improved, and the position of the tool box cavity and the shape is more accurate.

[0022] In some embodiments, the inner plate of the knife box is made of 30Cr2Ni2Mo alloy structural steel material, and the outer plate of the knife box is made of high-toughness wear-resistant steel material, thereby improving the overall wear resistance and durability of the knife box.

[0023] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A TMB tool box, characterized in that: The knife box comprises a three-layer composite form including an inner plate, an outer plate and a transition zone. The transition zone is a low-carbon layer. The low-carbon layer is arranged between the outer plate and the inner plate of the knife box by surfacing. The inner plate and the outer plate of the knife box are welded together.

2. A TMB tool box according to claim 1, characterized in that: The inner plate material of the knife box is 30Cr2Ni2Mo alloy structural steel material.

3. A TMB tool box according to claim 1, characterized in that: The outer plate of the knife box is made of high-toughness wear-resistant steel material.

4. A TMB tool box according to claim 1, characterized in that: The side cross section of the knife box outer plate is in an N shape.

5. A TMB tool box according to claim 1, characterized in that: The inner wall of the recessed part of the outer plate of the knife box is provided with a chamfer.

6. A TMB tool box according to claim 1, characterized in that: The inner wall of the knife box inner plate facing the recess of the knife box outer plate is provided with an oblique angle.

Images