CN107664036B - Center sleeve assembly for connecting shield cutter head and cutter head driving shaft - Google Patents
Center sleeve assembly for connecting shield cutter head and cutter head driving shaft Download PDFInfo
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- CN107664036B CN107664036B CN201610613424.4A CN201610613424A CN107664036B CN 107664036 B CN107664036 B CN 107664036B CN 201610613424 A CN201610613424 A CN 201610613424A CN 107664036 B CN107664036 B CN 107664036B
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- cutter head
- cylinder body
- driving shaft
- shield
- inner cylinder
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
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- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Nonmetallic Welding Materials (AREA)
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Abstract
The invention relates to a center sleeve assembly for connecting a shield cutter head and a cutter head driving shaft, which consists of an outer cylinder body and an inner cylinder body which are in interference fit, wherein the outer cylinder body is connected with a disc body of the shield cutter head, and the inner cylinder body is connected with the cutter head driving shaft through a spline. Compared with the prior art, the invention can simultaneously meet the welding requirements and the heat treatment requirements of different connecting parts of the central sleeve, has simple structure, firmness and reliability, low material cost and manufacturing cost and good adaptability to the connecting requirements of the cutter head and the cutter head driving shaft.
Description
Technical Field
The invention relates to a shield tunneling machine assembly, in particular to a center sleeve assembly for connecting a shield tunneling cutter head and a cutter head driving shaft.
Background
In the manufacturing process of the shield tunneling machine, a driving shaft of a cutter head of the shield tunneling machine is used as a rotating speed and torque output component of the cutter head of the shield tunneling machine and is connected with a cutter head structure of the shield tunneling machine through a central sleeve structure. The shield machine cutter head drive outputs the rotating speed and the torque through the driving shaft → the central sleeve → the cutter head.
The shield machine cutter head belongs to a medium-large steel structure part, and a main structure of the shield machine cutter head needs to adopt a welding structure, so that the shield machine cutter head is required to be made of a material with higher strength and high-quality welding performance. The cutter head driving shaft is used as a rotating speed and torque output part of the shield machine cutter head driving, and the manufacturing material of the cutter head driving shaft is required to have high strength and excellent heat treatment performance so as to meet the requirements of strength, toughness and hardness of the cutter head driving shaft.
The central sleeve of the cutter connected with the driving shaft needs to meet the requirements of high-quality welding performance connected with the cutter and high-quality heat treatment performance connected with the cutter driving shaft at the same time.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a center sleeve assembly for connecting a shield cutter head and a cutter head driving shaft, which can simultaneously meet the welding requirements and the heat treatment requirements of different connecting parts of a center sleeve.
The purpose of the invention can be realized by the following technical scheme:
a central sleeve component for connecting a shield cutter head and a cutter head driving shaft is composed of an outer barrel body and an inner barrel body which are in interference fit,
the outer cylinder body is connected with the shield cutter head,
the inner cylinder body is connected with the cutter head driving shaft through a spline.
The outer cylinder body is made of low-alloy high-strength structural steel with the mark Q345 and has high structural strength and high-quality welding performance.
The outer cylinder body is welded with the shield cutter head.
The inner cylinder body is made of alloy structural steel with the grade of 35CrMo, and has higher structural strength and excellent heat treatment performance.
The inner cylinder body is subjected to quenching and tempering heat treatment.
The inner cylinder body quenching and tempering heat treatment adopts the following steps:
1) quenching: controlling the temperature to be 850-870 ℃, preserving the heat for 70 minutes, and then carrying out oil bath cooling, wherein the oil temperature is 20-80 ℃;
2) tempering: controlling the temperature to be 550 ℃, preserving the heat for 4 hours, and then cooling in air.
The inner cylinder body reaches the Brinell hardness HB 320-HB 350 after quenching and tempering heat treatment. The inner cylinder material can well give consideration to the static strength, impact toughness and fatigue limit of the material within the hardness range.
A cutter head center sleeve of a shield machine belongs to a key part for connecting a cutter head and a driving shaft of the shield machine, and bears high loads such as impact, torsion and the like in the working process, and a structural material is required to have high-quality welding performance, high static strength, high impact toughness, high fatigue limit and high material hardness. However, the existing single material cannot meet the requirement.
Compared with the prior art, the center sleeve structure is processed by two different steel materials, the outer side of the center sleeve structure is welded with the cutter head steel structure of the shield machine, so that the low-alloy high-strength structural steel with the grade of Q345B, which is made of the same material as the cutter head steel structure, belongs to low-carbon alloy steel and has high-quality welding performance, the inner side of the center sleeve structure is connected with the cutter head driving shaft, the structure needs to transmit large torque enough for driving the cutter head to rotate, the material is required to have high static strength, impact toughness and high fatigue limit and material hardness, the alloy structural steel with the grade of 35CrMo is adopted, the welding requirements and heat treatment requirements of different connecting parts of the center sleeve can be met simultaneously, and the center sleeve structure is simple, firm and reliable, the material cost and the manufacturing cost are low.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the mounting structure of the present invention.
In the figure, 1-outer cylinder, 2-inner cylinder, 3-shield machine cutterhead, 4-cutterhead driving shaft and 5-positioning pin.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
A central sleeve assembly for connecting a shield cutter head and a cutter head driving shaft is structurally shown in figure 1, wherein the central sleeve is manufactured by adopting an inner-outer double-layer structure, an outer cylinder body 1 is made of low-alloy high-strength structural steel (the mark Q345), and the central sleeve assembly has high-quality welding performance and high strength. The inner cylinder body 2 is made of alloy structural steel (the mark is 35CrMo) and has high strength and high-quality heat treatment performance. And (3) quenching and tempering heat treatment is carried out on the inner cylinder body 2, and the hardness of the material reaches Brinell hardness HB 320-HB 350. The outer cylinder body 1 and the inner cylinder body 2 are in interference fit, the outer cylinder body 1 is heated to 150 ℃, then the outer cylinder body 1 is embedded into the inner cylinder body 2, and after cooling, the outer surface of the outer cylinder body 1 is subjected to coloring and permeation inspection to prevent cracks.
The structure of the invention is shown in figure 2 when it is installed. The matching surfaces of the outer cylinder body 1 and the inner cylinder body 2 are provided with positioning pin holes, and positioning pins 5 are embedded to prevent the outer cylinder body 1 and the inner cylinder body 2 from sliding in the circumferential direction.
The outer cylinder body 1 is connected with the cutter head 3 structure of the shield tunneling machine in a welding mode, and then the whole body is connected with the cutter head driving shaft through a spline, so that the purpose of outputting the driving rotating speed and the torque of the cutter head is achieved.
Example 2
A center sleeve assembly for connecting a shield cutter head and a cutter head driving shaft is composed of an outer barrel body and an inner barrel body which are in interference fit, wherein the outer barrel body is welded with a shield cutter head, and the inner barrel body is connected with the cutter head driving shaft through a spline. The outer cylinder body is made of low-alloy high-strength structural steel with the mark Q345 and has higher structural strength and excellent welding performance. The inner cylinder body is made of 35CrMo alloy structural steel, has higher structural strength and high-quality heat treatment performance, and is subjected to quenching and tempering heat treatment, and the method specifically comprises the following steps:
1) quenching: controlling the temperature to be 850 ℃, preserving the heat for 70 minutes, and then carrying out oil bath cooling, wherein the oil temperature is 20 ℃;
2) tempering: controlling the temperature to be 550 ℃, preserving the heat for 4 hours, and then cooling in air.
The inner cylinder body reaches Brinell hardness HB320 after quenching and tempering heat treatment, and the static strength, impact toughness and fatigue limit of the material can be well considered under the hardness.
Example 3
A center sleeve assembly for connecting a shield cutter head and a cutter head driving shaft is composed of an outer barrel body and an inner barrel body which are in interference fit, wherein the outer barrel body is welded with a shield cutter head, and the inner barrel body is connected with the cutter head driving shaft through a spline. The outer cylinder body is made of low-alloy high-strength structural steel with the mark Q345 and has higher structural strength and excellent welding performance. The inner cylinder body is made of 35CrMo alloy structural steel, has higher structural strength and high-quality heat treatment performance, and is subjected to quenching and tempering heat treatment, and the method specifically comprises the following steps:
1) quenching: controlling the temperature to 870 ℃, preserving the heat for 70 minutes, and then carrying out oil bath cooling, wherein the oil temperature is 80 ℃;
2) tempering: controlling the temperature to be 550 ℃, preserving the heat for 4 hours, and then cooling in air.
The inner cylinder body reaches Brinell hardness HB350 after quenching and tempering heat treatment, and the static strength, impact toughness and fatigue limit of the material can be well considered under the hardness.
Claims (3)
1. A central sleeve component for connecting a shield cutter head and a cutter head driving shaft is characterized in that the central sleeve component consists of an outer cylinder body and an inner cylinder body which are in interference fit,
the outer cylinder body is connected with the shield cutter head, the outer cylinder body is made of low-alloy high-strength structural steel with the mark Q345,
the inner cylinder body is connected with the cutter head driving shaft through a spline and is made of 35CrMo alloy structural steel;
the inner cylinder body is subjected to quenching and tempering heat treatment, and the quenching and tempering heat treatment of the inner cylinder body adopts the following steps:
1) quenching: controlling the temperature to be 850-870 ℃, preserving the heat for 70 minutes, and then cooling in an oil bath with the oil temperature of 20-80 ℃;
2) tempering: controlling the temperature to be 550 ℃, preserving the heat for 4 hours, and then cooling in air.
2. The center sleeve assembly for connecting a shield cutterhead with a cutterhead drive shaft according to claim 1, wherein the outer cylinder is welded to the shield cutterhead body.
3. The center sleeve assembly for connecting the shield cutter head and the cutter head driving shaft according to claim 1, wherein the inner cylinder body reaches Brinell hardness HB 320-HB 350 after quenching and tempering heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610613424.4A CN107664036B (en) | 2016-07-29 | 2016-07-29 | Center sleeve assembly for connecting shield cutter head and cutter head driving shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610613424.4A CN107664036B (en) | 2016-07-29 | 2016-07-29 | Center sleeve assembly for connecting shield cutter head and cutter head driving shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107664036A CN107664036A (en) | 2018-02-06 |
| CN107664036B true CN107664036B (en) | 2020-09-11 |
Family
ID=61114573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610613424.4A Active CN107664036B (en) | 2016-07-29 | 2016-07-29 | Center sleeve assembly for connecting shield cutter head and cutter head driving shaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN107664036B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359786A (en) * | 2018-02-07 | 2018-08-03 | 安徽合力股份有限公司合肥铸锻厂 | A kind of controllable cooling technique of steel alloy spindle nose water quenching |
| CN111119915B (en) * | 2019-12-17 | 2021-04-23 | 中铁工程装备集团有限公司 | High-strength TBM (tunnel boring machine) center knife box and preparation method thereof |
| CN111791018B (en) * | 2020-08-26 | 2021-09-17 | 中铁十八局集团有限公司 | Automatic assembling equipment for inner and outer barrels of central sleeve of shield cutter head |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1006821B (en) * | 1985-06-12 | 1990-02-14 | 大丰建设株式会社 | Shield type tunnel excavator |
| JP4397132B2 (en) * | 2001-03-28 | 2010-01-13 | 株式会社小松製作所 | Shield machine |
| CN2931787Y (en) * | 2006-06-13 | 2007-08-08 | 上海隧道工程股份有限公司 | Cutterhead driving mechanism of eccentric multi-axes roadheader |
| DE102006040881A1 (en) * | 2006-08-31 | 2008-03-06 | Ulrich Bechem | Device for removing rocks and other materials |
| CN101881170A (en) * | 2010-06-12 | 2010-11-10 | 上海电力学院 | Cutter disc of eccentric multi-shaft tunnel digging machine directly driven by hydraulic cylinders |
| CN105269270B (en) * | 2015-11-27 | 2017-03-22 | 吉林省维尔特隧道装备有限公司 | Production process for disc cutter ring of tunnel boring machine (TBM) |
| CN205895253U (en) * | 2016-07-29 | 2017-01-18 | 上海力行工程技术发展有限公司 | Novel shield cutterhead and actuating shaft connection's central nested structure |
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2016
- 2016-07-29 CN CN201610613424.4A patent/CN107664036B/en active Active
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| CN107664036A (en) | 2018-02-06 |
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