Visual air pressure type tunnel boring machine tool wear positioning detection device

Abstract

The utility model discloses a visual air pressure type tunnel boring machine cutter wear positioning detection device which comprises a detection box used for placing a cutter, the bottom of the detection box is connected with a bottom plate, and the top of the bottom plate is provided with an air storage tank; an air outlet pipe is mounted at the top of the air storage tank, the air outlet pipe is communicated with a diffusion nozzle extending into the detection box through an exhaust valve, an air flow controller and a check valve in sequence, and a plurality of cameras are mounted on the side wall of the detection box; colored gas is stored in the gas storage tank. One side of the detection box is communicated with the gas storage tank through a recovery pipe, and the recovery pipe is provided with a sucking pump. A cutter to be detected is placed in the detection box, the exhaust valve is opened, a certain amount of high-pressure colored gas in the gas storage tank is exhausted to the detection box through the gas flow controller along the gas outlet pipe, the gas is blown to the cutter through the diffusion nozzle, and the camera records the motion trail of the gas. The wear position of the cutter is obtained according to the principle that gas flow is affected by cutter contour wear.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool wear detection, and particularly relates to a visual pneumatic tool wear positioning detection device for a tunnel boring machine. Background Technique

[0002] During the use of a tunnel boring machine, the problem of tool wear will inevitably occur. The wear state of the tool directly affects engineering safety and tunneling efficiency. In a patent with the publication number CN108982208A, a pressure type shield cutter head tool wear detection device and its application method are disclosed. Although this method can judge whether the detected tool is worn and causes pressure relief through pressure detection, it cannot specifically check the wear degree and position of the tool, resulting in the inability of tool personnel to accurately understand the wear situation of the tool. At present, the wear degree of the tool is generally detected by manual caliper measurement, and the detection efficiency is low. Therefore, there is an urgent need for a tunnel boring machine tool wear detection device that is intuitive and easy to judge to quickly and effectively measure the wear degree and wear position of the tool. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a visual pneumatic tool wear positioning detection device for a tunnel boring machine aiming at the deficiencies in the above-mentioned prior art. Its design is novel and reasonable. A certain amount of gas is discharged from the gas storage tank through the gas flow controller along the air outlet pipe to the detection box by using the high-pressure colored gas in the gas storage tank. The gas is blown towards the tool through the diffusion nozzle, and the camera records the movement trajectory of the gas. According to the principle that the tool profile wear affects the gas flow, the wear position of the tool is obtained, solving the problem that the wear degree and wear position of the tool in the prior art are not intuitive.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a visual pneumatic tool wear positioning detection device for a tunnel boring machine, which is characterized in that: it includes a detection box for placing the tool, the bottom of the detection box is connected with a bottom plate, and a gas storage tank is installed on the top of the bottom plate; an air outlet pipe is installed on the top of the gas storage tank, and the air outlet pipe is successively connected with an exhaust valve, a gas flow controller and a check valve and is communicated with a diffusion nozzle extending into the detection box, and a plurality of cameras are installed on the side wall of the detection box; colored gas is stored in the gas storage tank; one side of the detection box is communicated with the gas storage tank through a recovery pipe, and an air extraction pump is installed on the recovery pipe.

[0005] The above-mentioned visual pneumatic tool wear positioning detection device for a tunnel boring machine is characterized in that: a barometer and a thermometer are installed on the side wall of the detection box.

[0006] The above-mentioned visual pneumatic tool wear positioning detection device for a tunnel boring machine is characterized in that: a plurality of the cameras are all connected with a computer.

[0007] The above-mentioned visual air-pressure type tunnel boring machine tool wear positioning and detection device is characterized in that: both the air outlet pipe and the recovery pipe are pressure-resistant pipelines.

[0008] The above-mentioned visual air-pressure type tunnel boring machine tool wear positioning and detection device is characterized in that: the detection box is a transparent detection box.

[0009] The above-mentioned visual air-pressure type tunnel boring machine tool wear positioning and detection device is characterized in that: the diffusion nozzle is a hollow cone structure.

[0010] The beneficial effect of the present utility model is that the design is novel and reasonable. A certain amount of gas is discharged from the gas storage tank through the gas flow controller along the air outlet pipe to the detection box by using the high-pressure colored gas in the gas storage tank. The gas is blown towards the tool through the diffusion nozzle, and the diffusion nozzle evenly shoots the colored gas towards the tool. The movement trajectory of the gas is captured by the camera, and the wear position of the tool is judged according to the disturbance effect of the tool wear on the air flow, solving the problem that the detection of the tool wear degree and wear position in the prior art is not intuitive, and being convenient for popularization and use.

[0011] The technical solution of the present utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of the present utility model.

[0013] Figure 2 It is a schematic diagram of the colored air flow movement trajectory of the unworn tool in the present utility model.

[0014] Figure 3 It is a schematic diagram of the colored air flow movement trajectory of the worn tool in the present utility model.

[0015] Description of the Reference Numerals:

[0016] 1 - Tool; 2 - Detection box; 3 - Exhaust valve;

[0017] 4 - Gas storage tank; 5 - Air outlet pipe; 6 - Gas flow controller;

[0018] 7 - Check valve; 8 - Diffusion nozzle; 9 - Camera;

[0019] 10 - Barometer; 11 - Thermometer; 12 - Base plate;

[0020] 13 - Air pump; 14 - Recovery pipe. Detailed Embodiments

[0021] Such as Figures 1 to 3As shown, the utility model includes a detection box 2 for placing a tool 1, the bottom of the detection box 2 is connected to a base plate 12, and a gas tank 4 is installed on the top of the base plate 12; an air outlet pipe 5 is installed on the top of the gas tank 4, and the air outlet pipe 5 is connected to a diffusion nozzle 8 extending into the detection box 2 through an exhaust valve 3, a gas flow controller 6 and a check valve 7 in sequence, and a plurality of cameras 9 are installed on the side wall of the detection box 2; non-colored gas is stored in the gas tank 4; one side of the detection box 2 is connected to the gas tank 4 through a recovery pipe 14, and an air pump 13 is installed on the recovery pipe 14.

[0022] It should be noted that a certain amount of gas is discharged from the high-pressure non-ferrous gas in the gas tank along the outlet pipe to the detection box through the gas flow controller, and the gas is blown toward the tool through the diffusion nozzle. The diffusion nozzle evenly sprays the non-ferrous gas toward the tool, and the movement trajectory of the gas is captured by a camera. The wear position of the tool is judged based on the disturbance effect of the tool wear on the airflow, which solves the problem of unintuitive detection of the degree of tool wear and the wear position in the prior art. The gas flow controller 6 has a built-in regulating valve, which can accurately control the gas flow as needed; smaller tools should provide more flow to amplify the air pressure difference caused by wear.

[0023] In this embodiment, a barometer 10 and a temperature meter 11 are installed on the side wall of the detection box 2 .

[0024] When in use, put the tool to be tested into the test box, open the exhaust valve, and the high-pressure gas in the gas tank will discharge a certain amount of gas to the test box along the outlet pipe through the gas flow controller. The check valve on the top of the test box can realize the pressure maintaining function. When the pressure is higher than a certain pressure, the valve will open, and the inflation process will be completed. The valve will close to maintain the pressure. After the inflation is completed, read the data of the barometer 10 and the thermometer 11 to ensure that they meet the inspection requirements.

[0025] In this embodiment, the plurality of cameras 9 are all connected to a computer.

[0026] In this embodiment, the gas outlet pipe 5 and the recovery pipe 14 are both pressure-resistant pipes, and both ends are provided with sealing joints to ensure that there is no leakage during the gas flow process.

[0027] In this embodiment, the detection box 2 is a transparent detection box.

[0028] The detection box 2 is a container with good airtightness. Its transparent design allows the detection personnel to observe the gas flow path in real time. Its capacity should be larger than the maximum specification of the tool to be detected, and it should be able to adapt to the wear detection of various types of tools.

[0029] In this embodiment, the diffusion nozzle 8 is a hollow cone structure, and the gas is sprayed evenly along the channel close to the outside.

[0030] The air extraction pump is opened when a detection is completed, and the high-pressure gas in the detection box 2 is pumped back into the gas storage tank 4, so that the colored gas can be recycled.

[0031] When the utility model is in use, the tool 1 to be detected is placed inside the detection box 2, the exhaust valve 3 is opened, and a certain amount of gas in the gas storage tank 4 is discharged to the detection box 2 along the air outlet pipe 5 through the gas flow controller 6. The check valve 7 at the top of the detection box 2 can realize the pressure maintaining function. The valve opens at a pressure higher than a certain value, and the inflation process is completed. Then the valve closes to maintain pressure. The gas blows towards the tool 1 through the diffusion nozzle 8, and the camera 9 records the movement trajectory of the gas for the detection personnel to view. The wear position of the tool is judged according to the disturbance effect of the tool wear on the air flow. After the detection is completed, the air extraction pump 13 is opened to pump the gas back into the gas storage tank 4 along the recovery pipe 14.

[0032] The gas flow path of the unworn tool is as Figure 2 shown; A shows the situation when the tool is unworn.

[0033] The gas flow path of the worn tool is as Figure 3 shown; B shows the situation when the tool is abnormally worn, and the gas path is offset due to the tool wear angle; C shows the situation when the tool has a chip breakage, and the gas path is turbulent due to the rough cross-section caused by the tool chip breakage.

[0034] The above are only the preferred embodiments of the utility model, and do not impose any limitations on the utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the utility model still fall within the protection scope of the technical solution of the utility model.

Claims

1. A visual pneumatic tunnel boring machine tool wear positioning detection device, characterized in that: The invention comprises a detection box (2) for placing a tool (1), wherein the bottom of the detection box (2) is connected to a base plate (12), and a gas storage tank (4) is installed on the top of the base plate (12); an air outlet pipe (5) is installed on the top of the gas storage tank (4), and the air outlet pipe (5) is connected to a diffusion nozzle (8) extending into the detection box (2) through an exhaust valve (3), a gas flow controller (6) and a check valve (7) in sequence; a plurality of cameras (9) are installed on the side wall of the detection box (2); colored gas is stored in the gas storage tank (4); one side of the detection box (2) is connected to the gas storage tank (4) through a recovery pipe (14), and a vacuum pump (13) is installed on the recovery pipe (14).

2. A visual pneumatic tunnel boring machine tool wear positioning detection device according to claim 1, characterized in that: A barometer (10) and a temperature meter (11) are installed on the side wall of the detection box (2).

3. A visual pneumatic tunnel boring machine tool wear positioning detection device according to claim 1, characterized in that: The plurality of cameras (9) are all connected to a computer.

4. A visual pneumatic tunnel boring machine tool wear positioning detection device according to claim 1, characterized in that: The gas outlet pipe (5) and the recovery pipe (14) are both pressure-resistant pipes.

5. A visual pneumatic tunnel boring machine tool wear positioning detection device according to claim 1, characterized in that: The detection box (2) is a transparent detection box.

6. A visual pneumatic tunnel boring machine tool wear positioning detection device according to claim 1, characterized in that: The diffusion nozzle (8) is a hollow cone structure.

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