Cutter head and cutter wear detection device

Abstract

The utility model relates to the technical field of shield construction, in particular to a cutter head and cutter wear detection device, which comprises a detection cutter, a cutter head, a cutter head, a cutter head, a cutter head, a cutter head, a cutter head, a cutter head, a cutter head and a cutter head, and is characterized in that the detection cutter is mounted on the cutter head; the pressure sensor is connected with the detection cutter and is used for detecting the pressure change in the detection cutter; according to the cutter head and the cutter abrasion detection device, the abrasion degree of the cutter and the cutter head can be detected without opening a bin, the risk that a tunnel face collapses after the bin is opened is avoided, the working efficiency is improved, and the working efficiency is improved. And meanwhile, the bin opening preparation time and the bin opening time are saved, and the shield construction period is shortened.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine (TBM) construction technology, specifically a cutterhead and tool wear detection device. Background Technology

[0002] Currently, the only method used both domestically and internationally to detect the wear of the cutterhead and cutting tools during tunnel boring machine (TBM) excavation is inspection upon opening the tunnel. This method involves measuring the current cutter dimensions using specialized calipers after opening the tunnel and comparing them with the dimensions of new cutters to determine the wear level of the cutters and cutterhead. However, during the tunnel opening process, there is a risk of face collapse at any time, potentially causing casualties. Furthermore, the time interval for inspecting the cutters during tunnel opening is 1-2 days, which impacts the construction schedule to some extent.

[0003] To avoid collapse accidents during cutterhead inspection, reduce risks during tunnel boring machine (TBM) construction, and overcome shortcomings such as long inspection cycles, there is an urgent need to develop a cutterhead and cutter wear detection device to overcome the deficiencies in current practical applications. Utility Model Content

[0004] The purpose of this invention is to provide a tool disc and tool wear detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tool disc and tool wear detection device, the device comprising:

[0007] The detection cutter is mounted on the cutterhead. The protrusion length of the detection cutter is greater than that of other cutters. It is used to make contact with the soil and wear it first during the cutterhead excavation process.

[0008] A pressure sensor, connected to the detection blade, is used to detect pressure changes inside the detection blade;

[0009] It also includes an alarm device connected to a pressure sensor, used to issue an alarm signal when the detection blade wears to a preset level.

[0010] As a further embodiment of this utility model: the detection blade includes an inner cavity and an outer cavity. The outer cavity is used to wear down first during the tunneling process. The inner cavity is connected to a pressure sensor. When the outer cavity wears down to the point of exposing the inner cavity, the pressure sensor detects the pressure change and triggers an alarm device.

[0011] As a further aspect of this invention, the extension length of the detection blade is adjustable to adapt to the blade wear detection requirements under different working conditions.

[0012] As a further embodiment of this invention: the pressure sensor is installed in the inner cavity of the detection knife to monitor the pressure changes in the inner cavity in real time, and to trigger an alarm device when the pressure is lower than a preset threshold.

[0013] As a further embodiment of this utility model: the alarm device includes an audible and visual alarm and a remote signal transmission module, which is used to issue an audible and visual alarm when the detection blade is worn to a preset degree, and transmit the alarm signal to the remote monitoring system.

[0014] As a further embodiment of this invention, the detection blade is mounted on the blade disc through a threaded hole, which facilitates disassembly and replacement.

[0015] As a further embodiment of this invention, the outer cavity surface of the detection blade is coated with a wear-resistant material.

[0016] As a further embodiment of this invention: the device also includes a control unit for receiving signals from the pressure sensor and controlling the working state of the alarm device; the control unit also includes a data storage module for recording the wear history data of the detection blade, facilitating subsequent analysis and maintenance.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By detecting the inner and outer chambers of the tool and the pressure sensor, when the outer chamber of the tool wears down and exposes the inner chamber, the inner chamber can no longer maintain the pressure, causing the sensor to alarm. This indicates that the tool is severely worn and needs to be opened and replaced. This saves the risk and time of opening the chamber to inspect the tool, and is beneficial for safe and efficient construction.

[0019] 2. The cutterhead and cutter wear detection device of this application can check the wear degree of the cutter and cutterhead without opening the tunnel, avoiding the risk of tunnel face collapse after opening the tunnel, and also saving the time of tunnel preparation and opening, thus shortening the tunnel construction period. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the tool disc and tool wear detection device of this utility model.

[0021] In the diagram: 1-outer cavity, 2-inner cavity, 3-pressure sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figure 1 This utility model provides a tool disc and tool wear detection device, the device comprising:

[0025] The detection cutter is mounted on the cutterhead. The protrusion length of the detection cutter is greater than that of other cutters. It is used to make contact with the soil and wear it first during the cutterhead excavation process.

[0026] Pressure sensor 3 is connected to the detection blade and is used to detect pressure changes inside the detection blade;

[0027] It also includes an alarm device connected to the pressure sensor 3, which is used to issue an alarm signal when the detection blade is worn to a preset level.

[0028] In one embodiment of this utility model, please refer to Figure 1 The detection blade includes an inner cavity 2 and an outer cavity 1. The outer cavity 1 is used to wear down first during the tunneling process. The inner cavity 2 is connected to a pressure sensor 3. When the outer cavity 1 wears down to expose the inner cavity 2, the pressure sensor 3 detects the pressure change and triggers an alarm device.

[0029] The extension length of the detection blade is adjustable to adapt to the needs of blade wear detection under different working conditions.

[0030] In one embodiment of this utility model, please refer to Figure 1 The pressure sensor 3 is installed in the inner cavity 2 of the detection knife to monitor the pressure change of the inner cavity 2 in real time and trigger the alarm device when the pressure is lower than the preset threshold.

[0031] The alarm device includes an audible and visual alarm and a remote signal transmission module, which is used to issue an audible and visual alarm when the detection blade is worn to a preset degree, and transmit the alarm signal to the remote monitoring system.

[0032] In one embodiment of this utility model, please refer to Figure 1 The detection blade is mounted on the blade disc through a threaded hole, making it easy to disassemble and replace.

[0033] The outer cavity 1 of the detection knife is coated with a wear-resistant material to extend its service life.

[0034] In one embodiment of this utility model, the device further includes a control unit for receiving signals from the pressure sensor 3 and controlling the working state of the alarm device; the control unit also includes a data storage module for recording the wear history data of the detection blade for subsequent analysis and maintenance.

[0035] This device consists of a hydraulic wear detection blade (limit monitoring blade) and a pressure sensor 3. A detection blade is pre-installed on the surface of the blade disc. This blade has the largest extension length compared to all other blades. The blade is divided into two chambers, inner and outer. The inner chamber 2 is connected to a pressure sensor 3.

[0036] By inspecting the two chambers inside and outside the tool and the pressure sensor 3, after the outer chamber 1 of the tool wears down, the inner chamber 2 is exposed. At this point, the inner chamber 2 can no longer maintain the pressure, causing the sensor to alarm, indicating that the tool is severely worn and needs to be opened and replaced. This saves the risk and time of opening the chamber to inspect the tool, and is conducive to safe and efficient construction.

[0037] The construction method for the cutter head and tool wear detection device is as follows:

[0038] During the tunneling process, the monitoring cutter is the first to experience stress and wear.

[0039] After the outer cavity 1 of the inspection tool wears down, the inner cavity 2 is exposed.

[0040] The inner cavity 2 of the monitoring blade is exposed, making it impossible to guarantee the pressure within it;

[0041] Pressure sensor 3 alarm indicates that the chamber needs to be opened and the tool needs to be replaced;

[0042] Opening the chamber and changing the tool.

[0043] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cutter head and cutter wear detection apparatus, characterized by, The device comprises: a detection cutter mounted on the cutter head, the detection cutter having a greater protruding length than other cutters, for first contacting the soil and wearing out during the cutter head excavation process; a pressure sensor connected to the detection cutter, for detecting pressure changes inside the detection cutter; and an alarm device connected to the pressure sensor, for sending an alarm signal when the detection cutter wears out to a preset degree.

2. The cutter head and cutter wear detection apparatus of claim 1, wherein, The detection cutter comprises an inner cavity and an outer cavity, the outer cavity being used for first wearing out during the excavation process, and the inner cavity being connected to the pressure sensor, so that when the outer cavity wears out to expose the inner cavity, the pressure sensor detects the pressure change and triggers the alarm device.

3. The cutter head and cutter wear detection apparatus of claim 2, wherein, The protruding length of the detection cutter is adjustable, for cutter wear detection under different working conditions.

4. The cutter head and cutter wear detection apparatus of any one of claims 1-3, wherein, The pressure sensor is arranged in the inner cavity of the detection cutter, for real-time monitoring of the pressure change in the inner cavity, and triggering the alarm device when the pressure is lower than a preset threshold.

5. The cutter head and cutter wear detection apparatus of claim 4, wherein, The alarm device comprises an audible and visual alarm and a remote signal transmission module, for sending audible and visual alarms when the detection cutter wears out to a preset degree, and transmitting the alarm signal to a remote monitoring system.

6. The cutter head and cutter wear detection apparatus of claim 1, wherein, The detection cutter is mounted on the cutter head through a threaded hole.

7. The cutter head and cutter wear detection apparatus of claim 6, wherein, The surface of the outer cavity of the detection cutter is coated with wear-resistant material.

8. The cutter head and cutter wear detection apparatus of claim 1, wherein, The device further comprises a control unit for receiving signals from the pressure sensor and controlling the working state of the alarm device; the control unit further comprises a data storage module for recording wear history data of the detection cutter for subsequent analysis and maintenance.

Images