Shield tunneling machine cutter wear detection structure and use method thereof

Abstract

The invention relates to a shield tunneling machine cutter wear detection structure, which is characterized in that the shield tunneling machine cutter wear detection structure comprises a probe, one end of the probe is provided with a wear detection end, and the wear detection end is attached to a cutter head of a shield tunneling machine; the detection oil path is formed in the probe, and the detection oil path is connected to the wear detection end; the oil path detector is arranged on the side, away from the abrasion detection end, of the probe, the oil path detector is connected with the detection oil path, the structure is simple, and the detection effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a shield machine cutter wear detection structure and a use method thereof. Background Art

[0002] The shield machine cutter plays an extremely important role in the shield machine excavation process. The height and durability of the cutter have a very important impact on the shield machine's excavation speed and efficiency. In the shield machine excavation process, the scraping cutter has the following two functions: 1) Cutting effect. When the shield machine is excavating, the blade of the cutter is constantly embedded in the face of the tunnel, so that the slag on the face of the tunnel is continuously peeled off and enters the soil bin, realizing the excavation of the shield machine; 2) Protection effect. During the tool cutting process, the load on the cutterhead is mainly concentrated on the cutter, while the cutterhead body is relatively lightly loaded. Therefore, during the long-term excavation process, the wear of the cutter is much greater than that of the cutterhead body, which plays a considerable protective role on the cutterhead body.

[0003] On the existing shield machine cutterhead, scraping tools are generally fixed on the cutterhead by threaded connection or welding, and the height is a certain value. During the shield machine excavation process, due to the continuous grinding of the slag, the scraping tools are continuously worn at a certain rate. When the tool wear is large, if the tool is not replaced in time, the cutterhead body will be damaged, causing damage and deformation of the cutterhead steel structure. In severe cases, the thrust and torque of the cutterhead will be too large, damaging the drive system and causing a long operation time, which greatly affects the construction progress. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a shield machine tool wear detection structure. When the tool is worn to a certain extent, the wear detection end of the probe will be worn when construction continues. After the wear detection end is worn, the detection oil circuit will be opened and connected to the outside world, and the detection oil circuit in the probe will leak. The oil circuit detector will issue an alarm to inform that the tool has been worn.

[0005] The technical solution to achieve the above purpose is a shield machine tool wear detection structure, including:

[0006] A probe, one end of which is formed with a wear detection end, and the wear detection end is arranged close to the cutter head of the shield machine;

[0007] A detection oil circuit is formed in the probe, wherein the detection oil circuit is connected to the wear detection end; and

[0008] An oil circuit detector is arranged on a side of the probe away from the wear detection end, and the oil circuit detector is connected to the detection oil circuit.

[0009] Furthermore, the surface of the wear detection end is coated with a wear-resistant coating.

[0010] Furthermore, the cross-section of the wear detection end is trapezoidal.

[0011] Furthermore, a pressurized oil circuit is formed in the wear detection end, and the pressurized oil circuit is connected to the detection oil circuit.

[0012] Furthermore, the pressurized oil circuit is arranged along the edge of the wear detection end.

[0013] Furthermore, the cross-sections of the probe and the wear detection end are T-shaped.

[0014] The present invention also provides a method of use, comprising the following steps: providing a probe, installing the probe at the cutter head position of a shield machine, and a wear detection end of the probe being attached to the guide plate;

[0015] During the travel of the shield machine, the detection oil circuit is detected in real time to see if there is leakage. If so, the oil circuit detector is controlled to sound an alarm.

[0016] Furthermore, before installing the probe, a wear-resistant coating is applied to the outside of the wear detection end.

[0017] Further, the cross section of the wear detection end is a trapezoid;

[0018] When the probe is installed, one side of the wear detection end is arranged to fit the cutter disc.

[0019] Furthermore, a pressurized oil circuit is formed in the wear detection end, and the pressurized oil circuit is connected to the detection oil circuit.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the tool is worn to a certain extent, the wear detection end of the probe will be worn when construction continues. After the wear detection end is worn, the detection oil circuit will be opened and connected to the outside world, the detection oil circuit in the probe will leak, and the oil circuit detector will sound an alarm to inform that the tool is worn. Preferably, the wear detection end is trapezoidal and has a wear-resistant coating on the surface to avoid the technical problem of false alarm due to the wear detection end of the probe leaking the detection oil circuit due to erosion and wear by gravel and slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a diagram showing the effect of using a tool wear detection structure for a shield machine according to the present invention.

[0023] Figure 2 This is an overall structural diagram of a shield machine tool wear detection structure of the present invention.

[0024] Figure 3 The present invention is a schematic structural diagram of a wear detection end of a cutter wear detection structure for a shield machine.

[0025] Legend: 1. Wear detection end; 11. Wear-resistant coating; 2. Detection oil circuit; 21. Pressurized oil circuit; 3. Cutting tool; 4. Probe; 5. Oil circuit detector. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] See also Figures 1 to 3 A shield machine tool wear detection structure includes: a probe 4, one end of which is formed with a wear detection end 1, and the wear detection end 1 is arranged close to the cutter head of the shield machine; a detection oil circuit 2 is formed in the probe 4, and the detection oil circuit 2 is connected to the wear detection end 1; and an oil circuit detector 5 is arranged on a side of the probe 4 away from the wear detection end 1, and the oil circuit detector 5 is connected to the detection oil circuit 2.

[0028] In the present invention, a preferred implementation is: the probe 4 is installed on the shield machine, the wear detection end 1 is in contact with the front end of the cutter barrel of the shield machine, and interference with the normal operation trajectory of the cutter 3 must be avoided. When the shield cutter 3 is worn to the warning height, as the shield machine is excavated, the rock formation on the face in front of the cutter disc continues to wear the cutter 3 and the wear detection end 1. After the wear detection end 1 is worn through, the detection oil circuit 2 in the probe 4 is depressurized, thereby triggering the pressure relief alarm of the oil circuit detector 5. Preferably, the oil circuit detector 5 is connected to the operating system of the shield machine. When the detection oil circuit 2 is depressurized, the construction personnel can easily obtain the wear condition of the cutter 3 from the operating system of the shield machine, so that the construction personnel can more accurately determine the tool change time of the shield machine. Preferably, after the cutter disc is worn to about 7 cm, continued construction will wear to the wear detection end 1. The positions of the probe 4 and the wear detection end 1 can also be adjusted according to the actual construction conditions on site.

[0029] Furthermore, the surface of the wear detection end 1 is coated with a wear-resistant coating 11. The wear-resistant coating 11 can increase the wear resistance of the wear detection end 1, and prevent the wear detection end 1 from being eroded and worn by the debris and slag generated when the shield machine is working, thereby causing the oil circuit detector 5 to generate a false alarm. Preferably, the thickness of the wear-resistant coating 11 is about 1 cm.

[0030] Furthermore, the cross section of the wear detection end 1 is a trapezoid. By arranging the wear detection end 1 to form a trapezoid, the structure and wear surface area of ​​the wear detection end 1 are expanded without affecting the normal operation of the adjacent track tool 3.

[0031] Furthermore, a pressurized oil circuit 21 is formed in the wear detection end 1 , and the pressurized oil circuit 21 is connected to the detection oil circuit 2 .

[0032] Furthermore, the pressurized oil circuit 21 is arranged along the edge of the wear detection end 1 .

[0033] Furthermore, the cross-sections of the probe 4 and the wear detection end 1 are T-shaped.

[0034] The present invention also provides a method of use, comprising the following steps: providing a probe, installing the probe at the cutter head position of a shield machine, and a wear detection end of the probe being attached to the guide plate;

[0035] During the travel of the shield machine, the detection oil circuit is detected in real time to see if there is leakage. If so, the oil circuit detector is controlled to sound an alarm.

[0036] Furthermore, before installing the probe, a wear-resistant coating is applied to the outside of the wear detection end.

[0037] Further, the cross section of the wear detection end is a trapezoid;

[0038] When the probe is installed, one side of the wear detection end is arranged to fit the cutter disc.

[0039] Furthermore, a pressurized oil circuit is formed in the wear detection end, and the pressurized oil circuit is connected to the detection oil circuit.

[0040] The following is a description of the use of a shield machine tool wear detection structure of the present invention.

[0041] A wear-resistant coating 11 is applied to the probe 4, and the probe 4 is installed on the shield machine. The wear detection end 1 fits with the front end of the cutter barrel of the shield machine, and must avoid interfering with the normal operation trajectory of the cutter 3. When the shield cutter 3 is worn to the warning height, as the shield machine advances, the rock formation on the face in front of the cutterhead continues to wear the cutter 3 and the wear detection end 1. After the wear detection end 1 is worn through, the detection oil circuit 2 in the probe 4 is depressurized, thereby triggering the pressure relief alarm of the oil circuit detector 5. Preferably, the oil circuit detector 5 is connected to the operating system of the shield machine. When the detection oil circuit 2 is depressurized, construction personnel can easily obtain the wear condition of the cutter 3 from the operating system of the shield machine, so that construction personnel can more accurately determine the tool change time of the shield machine.

[0042] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A shield machine tool wear detection structure, characterized in that it includes: A probe, one end of which is formed with a wear detection end, and the wear detection end is arranged close to the cutter head of the shield machine; A detection oil circuit formed in the probe, wherein the detection oil circuit is connected to the wear detection end; as well as An oil circuit detector is arranged on a side of the probe away from the wear detection end, and the oil circuit detector is connected to the detection oil circuit.

2. A shield machine tool wear detection structure according to claim 1, characterized in that: The surface of the wear detection end is coated with a wear-resistant coating.

3. A shield machine tool wear detection structure according to claim 1, characterized in that: The cross section of the wear detection end is trapezoidal.

4. A shield machine tool wear detection structure according to claim 1, characterized in that: A pressurized oil circuit is formed in the wear detection end, and the pressurized oil circuit is communicated with the detection oil circuit.

5. A shield machine tool wear detection structure according to claim 4, characterized in that: The pressurized oil circuit is arranged along the edge of the wear detection end.

6. A shield machine tool wear detection structure according to claim 1, characterized in that: The cross-sections of the probe and the wear detection end are T-shaped.

7. A method for using a shield machine tool wear detection structure according to claim 1, characterized in that: The method comprises the following steps: providing a probe, installing the probe at the cutter disc position of the shield machine, and a wear detection end of the probe is attached to the guide disc; During the travel of the shield machine, the detection oil circuit is detected in real time to see if there is leakage. If so, the oil circuit detector is controlled to sound an alarm.

8. The method for using the shield machine tool wear detection structure according to claim 7, characterized in that: Before installing the probe, a wear-resistant coating is applied to the outside of the wear detection end.

9. The method for using the shield machine tool wear detection structure according to claim 7, characterized in that: The cross section of the wear detection end is trapezoidal; When the probe is installed, one side of the wear detection end is arranged to fit the cutter disc.

10. The method for using the shield machine tool wear detection structure according to claim 7, characterized in that: A pressurized oil circuit is formed in the wear detection end, and the pressurized oil circuit is connected to the detection oil circuit.

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