Inductor for surface quenching of shield cutter box seat

Abstract

The utility model discloses an inductor for shield cutter box seat surface quenching, which comprises a cutter box seat, a quenching surface A, a quenching surface B and a quenching surface C are arranged in the cutter box seat, an A-surface copper pipe is arranged at the top of the quenching surface A, an I pole is fixedly mounted at the front end of the B-surface copper pipe, an II pole is fixedly mounted at the top of the A-surface copper pipe, and the I pole is fixedly mounted at the front end of the B-surface copper pipe. The utility model relates to the technical field of shield cutter box seat surface quenching. According to the inductor for quenching the surface of the shield cutter box seat, four times of scanning quenching is carried out on four quenching surfaces of one cutter box seat, and the problem that after four times of scanning quenching is carried out on the four quenching surfaces of one cutter box seat, two surfaces intersect, and cracks are likely to be generated is solved; the problems that the service life is affected by secondary heating and tempering of the connecting positions, reduction of the hardness of the connecting face areas, reduction of the abrasion resistance and reduction of the strength of the quenching faces due to quenching of the four quenching faces of one cutter box base in different sequences are solved, the production efficiency is improved, and the four working faces are heated and quenched once.

Description

Technical Field

[0001] The utility model relates to the technical field of surface quenching of a shield tool box seat, in particular to an inductor used for surface quenching of a shield tool box seat. Background Art

[0002] Shield machines are widely used in tunnel construction. The cutter ring of the shield machine bears the function of splitting mountains and crushing rocks. The cutter ring is installed on the cutter shaft, and the cutter shaft is installed on the cutter box seat. Therefore, the cutter box seat bears the positive and lateral compressive stress of the cutter ring. After quenching and tempering, the cutter box seat needs to be surface quenched on the pressure surface of the cutter bearing. The working surface that bears the cutter shaft is commonly known as the L surface. The L surface has four working surfaces that need to be surface quenched. The vertical bearing surface is the main stress-bearing surface. The quenching hardening layer depth is ≥15mm, and the quenching hardening layer depth of the other three surfaces of the L surface is ≥10mm.

[0003] There are several main types of surface hardening sensors for the L surface of most tool box seats on the market. See the schematic diagram of the L surface of the tool box seat on the left. Figure 1 ,

[0004] The first type is scanning quenching, which uses four sensors to scan and quench surface A, surface B (two area surfaces), and surface C respectively;

[0005] The second type is that the A side has a large bearing capacity and the hardened layer depth is ≥15mm, so it adopts one-shot heating and then quenching. The other sides, B and C, are designed with four sensors for scanning quenching.

[0006] The third method is to design a sensor for one-shot quenching of surface A, surface B, and surface C respectively. However, due to unreasonable sensor design, the hardened layer of surface A and surface C is not deep enough, the hardness is uneven, and there are many soft spots.

[0007] To this end, the utility model provides an inductor for surface quenching of a shield tool box seat to solve the above problems. Utility Model Content

[0008] In view of the deficiencies in the prior art, the present invention provides an inductor for surface quenching of a shield cutter box seat, which solves the above-mentioned problems.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an inductor for surface quenching of a shield tool box seat, comprising a tool box seat, wherein the interior of the tool box seat is provided with a quenching surface A, a quenching surface B and a quenching surface C, an A-side copper tube is provided on the top of the quenching surface A, a B-side copper tube is provided on the outside of the quenching surface B, and a C-side copper tube is provided on the side of the quenching surface C, the A-side copper tube is fixedly connected to the B-side copper tube, the A-side copper tube is fixedly connected to the C-side copper tube, the front end of the B-side copper tube is fixedly installed with an I pole, and the top of the A-side copper tube is fixedly installed with a II pole.

[0010] Preferably, the copper tube on the A side is formed by three 12*12mm copper tubes with a wall thickness of 1.5mm and arranged evenly horizontally.

[0011] Preferably, the B-side copper tube and the C-side copper tube are made of 14*14mm copper tubes with a wall thickness of 2mm on the quenched surface.

[0012] Preferably, magnetic conductive silicon steel sheets are placed on the copper tubes on the A side, the B side, and the C side, and the wall thickness of the silicon steel sheets is 0.2 mm.

[0013] Preferably, the poles I and II are made of copper tubes with a wall thickness of 14*14mm and a quenched surface thickness of 2mm, and the poles I and II are kept horizontally parallel.

[0014] Preferably, water spray holes are evenly opened inside the cooling jacket.

[0015] Beneficial effects

[0016] The utility model provides an inductor for surface quenching of shield cutter box seats. Compared with the existing technology, it has the following advantages:

[0017] 1. The sensor used for surface quenching of shield tool box seat solves the problem of four-step scanning quenching of the four quenching surfaces of a tool box seat, and solves the problem of cracks easily generated at the intersection of two surfaces after four-step scanning quenching of the four quenching surfaces of a tool box seat. It also solves the problem of secondary heating and tempering of the connection due to quenching of the four quenching surfaces of a tool box seat in different orders, which reduces the hardness of the connection surface area, the wear resistance and the strength of the quenching surface, and affects the service life, thereby improving production efficiency. The four working surfaces are heated and quenched once. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is a three-dimensional diagram of the tool box seat structure of the utility model;

[0020] Figure 2 This is a disassembled diagram of the L-surface quenching sensor of the tool box seat of the utility model;

[0021] Figure 3 This is a schematic diagram of the installation of the L-surface quenching sensor of the tool box seat of the utility model;

[0022] Figure 4 It is a schematic diagram of four cooling jackets of the present utility model.

[0023] In the figure: 1. Tool box seat; 2. Quenching surface A; 3. Quenching surface B; 4. Quenching surface C; 5. Pole I; 6. Pole II; 7. Copper tube on surface A; 8. Copper tube on surface B; 9. Copper tube on surface C; 10. Cooling jacket. DETAILED DESCRIPTION

[0024] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] The present application will be further described in detail below through the accompanying drawings and examples.

[0026] Reference Figures 1 to 4 An embodiment of the present application provides a sensor for surface quenching of a shield tool box seat, including a tool box seat 1. A quenching surface A2, a quenching surface B3 and a quenching surface C4 are provided inside the tool box seat 1. An A-side copper tube 7 is provided on the top of the quenching surface A2, a B-side copper tube 8 is provided on the outside of the quenching surface B3, and a C-side copper tube 9 is provided on the side of the quenching surface C4. The A-side copper tube 7 is fixedly connected to the B-side copper tube 8, and the A-side copper tube 7 is fixedly connected to the C-side copper tube 9. The front end of the B-side copper tube 8 is fixedly installed with an I pole 5, and the top of the A-side copper tube 7 is fixedly installed with a II pole 6.

[0027] The copper tube 7 on the A side is made of three 12*12mm copper tubes with a wall thickness of 1.5mm, which are evenly arranged horizontally. The copper tube 8 on the B side and the copper tube 9 on the C side are made of 14*14mm copper tubes with a wall thickness of 2mm on the quenched surface. Magnetic silicon steel sheets with a wall thickness of 0.2mm are placed on the copper tubes 7 on the A side, 8 on the B side, and 9 on the C side. The I pole 5 and the II pole 6 are made of 14*14mm copper tubes with a wall thickness of 2mm on the quenched surface. The I pole 5 and the II pole 6 are kept horizontally parallel. Water spray holes are evenly opened inside the cooling jacket 10.

[0028] In this embodiment, the tool box seat has four working surfaces that need surface quenching, of which surface A requires a quenching depth of more than 15mm, and the other three working surfaces require a quenching depth of more than 10mm. A sensor with four working surfaces is designed. Surface A is equipped with three rectangular copper tubes with a specification of 12*12mm, and the other surfaces are equipped with rectangular copper tubes with a specification of 14*14mm. Figure 2 welding.

[0029] The specific solution is to use a medium-frequency power supply, preferably in conjunction with a quenching machine, with a frequency of 2K-4KHZ. Design a fixture to place the product and connect the quenching water-cooling jacket. The product needs to be preheated, and the preheating power can be adjusted down to half the power required for the normal process. When the temperature of surface A reaches the quenching temperature and the required hardened layer depth on surface A is approximately 10mm, adjust the heating power to the power required for the normal process. When the required layer depth reaches 15mm, the water-cooling jacket can be used for cooling and quenching. The entire process is simple, convenient, and safe.

[0030] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] Working Principle: The equipment is preferably equipped with a medium-frequency power supply, which can be used in conjunction with a quenching machine. The frequency can be selected from 2K to 4KHZ. A fixture is designed to place the product, and a quenching water-cooling jacket is connected. The product needs to be preheated, and the preheating power can be reduced to half the power required for the normal process. The preheating time is adjusted to the power required for the normal process when the temperature of the A surface reaches the quenching temperature and the required hardened layer depth of the A surface is approximately 10mm. When the process requires a layer depth of 15mm, the water-cooling jacket can be arranged for cooling and quenching. The entire process is simple, convenient, and safe to operate.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An inductor for surface hardening of a shield tool box seat, comprising a tool box seat (1) and a cooling jacket (10), characterized in that: The knife box seat (1) is provided with a quenching surface A (2), a quenching surface B (3) and a quenching surface C (4) inside. The top of the quenching surface A (2) is provided with an A-surface copper tube (7), the outer side of the quenching surface B (3) is provided with a B-surface copper tube (8), and the side of the quenching surface C (4) is provided with a C-surface copper tube (9). The A-surface copper tube (7) is fixedly connected to the B-surface copper tube (8), and the A-surface copper tube (7) is fixedly connected to the C-surface copper tube (9). The front end of the B-surface copper tube (8) is fixedly installed with an I pole (5), and the top of the A-surface copper tube (7) is fixedly installed with a II pole (6).

2. The sensor for surface quenching of a shield tool box seat according to claim 1, characterized in that: The A-side copper tube (7) is formed by three 12*12mm copper tubes with a wall thickness of 1.5mm and arranged evenly in a horizontal manner.

3. The sensor for surface quenching of a shield tool box seat according to claim 1, characterized in that: The B-side copper tube (8) and the C-side copper tube (9) are made of copper tubes with a wall thickness of 14*14mm and a quenched surface thickness of 2mm.

4. The sensor for surface quenching of a shield tool box seat according to claim 1, characterized in that: Magnetic conductive silicon steel sheets are placed on the A-side copper tube (7), the B-side copper tube (8), and the C-side copper tube (9), and the wall thickness of the silicon steel sheets is 0.2 mm.

5. The sensor for surface quenching of a shield tool box seat according to claim 1, characterized in that: The I pole (5) and the II pole (6) are made of a copper tube with a wall thickness of 14*14mm and a quenched surface thickness of 2mm. The I pole (5) and the II pole (6) are kept horizontally parallel.

6. The sensor for surface quenching of a shield tool box seat according to claim 1, characterized in that: Water spray holes are evenly arranged inside the cooling jacket (10).

Images