CN219284644U

CN219284644U - Wireless detection system for shield tunneling machine scraper falling off based on distributed sensor

Info

Publication number: CN219284644U
Application number: CN202222924488.XU
Authority: CN
Inventors: 董雨畅; 林间宇; 陈超; 王佳宁; 彭佳慧; 韩东; 白振虎; 梁儒刚
Original assignee: Jiangxi China Railway Engineering Equipment Co ltd
Current assignee: Jiangxi China Railway Engineering Equipment Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-06-30
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a shield machine scraper falling wireless detection system based on a distributed sensor, which relates to the technical field of shield machine scraper falling detection. The system adopts non-contact modes such as inductance and electromagnetism to realize detection of the scraper, transmits sensor signals distributed at all positions of the shield machine to the high-transmission wireless transmission module and converts the sensor signals into wireless signals, transmits the signals to an internal control room of the shield machine through the high-transmission antenna, monitors the received signals through the software monitoring system, and diagnoses the scraper state of the shield machine. The module units are mutually connected and cooperate together to realize the on-line working condition monitoring of the scraper state of the shield machine.

Description

Wireless detection system for shield tunneling machine scraper falling off based on distributed sensor

Technical Field

The utility model relates to the technical field of shield tunneling machine scraper falling detection, in particular to a wireless shield tunneling machine scraper falling detection system based on a distributed sensor.

Background

Along with the rapid development of urban construction, the shield machine is increasingly widely applied and the demand quantity is increasingly increased, the shield machine is a main component for realizing rock breaking and tunneling, and the shield machine is high in price, and in the working process, the condition that a scraper falls off is more likely to occur when broken stone, sand stone and the like are worn on the cutter.

The cutter falling off of the shield machine is a key factor influencing the construction quality and progress of the shield, and the traditional cutter falling off detection method of the shield machine is comparatively backward at present, such as methods of warehouse opening detection, peculiar smell monitoring, hydraulic oil pressure detection and the like. For example, the shield machine is stopped when the shield machine is detected in the open bin, and detection workers enter the cabin to check the cutters one by one. For example, odor monitoring is achieved by adding an additive with a specific odor to the hydraulic oil, which gives off a pungent odor when the spatula is detached. However, in the actual operation process of the shield machine, the monitoring effect is not obvious. In addition, hydraulic oil pressure monitoring is also used in some cases, however, the oil pressure detection method is limited in number, and can only be installed on a small part of tools, so that the falling-off condition of other tools cannot be detected, and the falling-off condition of which tool cannot be obtained, some methods and devices for monitoring the abrasion of the tools have been proposed in the prior art, such as chinese patent nos. CN114942127a and CN114608430a, but these methods are mainly used for monitoring the abrasion loss of the tools and are not specially used for monitoring the falling-off of the tools, and therefore, a more perfect solution is sought for the above-mentioned scraper falling-off problem in the art, so as to meet the current increasing technological requirements.

Disclosure of Invention

Aiming at the defects or improvement demands of the prior art, the utility model provides a wireless detection system for the falling-off of a shield machine scraper based on a distributed sensor, wherein the state of the scraper on a shield machine cutterhead is monitored by adopting a non-contact detection principle, meanwhile, in order to adapt to the rotating working state of the shield machine, a wireless signal transmission mode solution is adopted, meanwhile, a distributed monitoring network is established aiming at the monitoring demands of a plurality of scrapers on the shield machine cutterhead, and the signal transmission path is researched and improved.

In order to achieve the above purpose, according to the utility model, a wireless detection system for shield tunneling machine scraper falling off based on a distributed sensor is provided, and the detection system comprises a non-contact sensor unit, a distributed monitoring network unit, a high-transmission wireless transmission module unit and a software monitoring system unit.

In general, according to the above technical solutions of the present utility model, the following technical advantages are mainly provided:

the state of the scraper is monitored by adopting a non-contact measurement method, so that the method can adapt to the normal operation working condition of the shield machine, does not influence the work of the shield machine, and compared with the prior art or equipment, the method not only remarkably improves the production efficiency, but also is convenient and quick to monitor;

through adopting wireless communication mode to transmit the sensor signal, stride shield machine rotary module, can accomplish not shut down the monitoring, utilize wireless communication mode simultaneously, can conveniently carry out interval timing and initiative inquiry monitoring to shield machine scraper state.

The wireless monitoring system for the scraper falling off distributed sensor of the shield machine has the advantages of simple overall structure, ingenious distributed sensor layout, rapid signal transmission and simple operation, and is very suitable for scraper falling off detection under the working state of the shield machine.

Drawings

FIG. 1 is a schematic diagram of the overall construction of a distributed sensor-based wireless detection system for shield machine scraper fall-off;

FIG. 2 is a block diagram of a wireless monitoring system architecture of a shield tunneling machine scraper drop-off distributed sensor;

FIG. 3 is a distribution diagram of the position of a cutter head scraper of the shield tunneling machine;

FIG. 4 is a schematic diagram of the non-contact sensor distribution at the doctor blade base position;

FIG. 5 is a schematic diagram of the non-contact sensor distribution at the doctor blade base position;

FIG. 6 is a schematic diagram of a non-contact sensor cell structure and layout;

FIG. 7 is a schematic diagram of a distributed monitoring network unit structure and layout;

fig. 8 is a schematic diagram of the structure and layout of the high transmission wireless transmission module unit and the software monitoring system unit.

Legend description: 100. a non-contact sensor unit; 101. a scraper base; 102. a shield tunneling machine scraper; 103. a non-contact sensor; 104. a sensor protection cover; 105. a connecting bolt; 200. a distributed monitoring network unit; 201. a non-contact sensor signal line; 202. a distributed signal wiring system; 300. a high transmission wireless transmission module unit; 301. a high transmission wireless signal transmitter; 302. a wireless signal receiver; 400. a software monitoring system unit; 401. a signal transmission line; 402 monitoring a software system;

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Fig. 1 is a schematic diagram of the overall construction of a wireless detection system for shield tunneling machine scraper falling based on a distributed sensor, which is constructed according to the present utility model, and as shown in fig. 1, mainly includes a non-contact sensor unit 100, a distributed monitoring network unit 200, a high-transmission wireless transmission module unit 300 and a software monitoring system unit 400.

Referring to fig. 2, the shield tunneling machine scraper falling wireless detection system based on the distributed sensor is composed of a top-down structure, and the software monitoring system unit 400, the high-transmission wireless transmission module unit 300, the distributed monitoring network unit 200 and the non-contact sensor unit 100 are formed in sequence.

Referring to fig. 3, the positions of the scrapers to be monitored by the non-contact sensor 103 are determined by the position distribution of the scrapers on the cutter head of the shield machine, and preferably, the number of the required monitored scrapers is 24 groups.

Referring to fig. 4, the non-contact sensor unit 100 includes a scraper base 101, a shield machine scraper 102, a non-contact sensor 103, a sensor protection cover 104 and a connecting bolt 105, wherein the non-contact sensor unit 100 adopts one or more non-contact sensors 103, and the scraper state can be detected by adopting one or more non-contact sensors 103, the number of the sensors is preferably 2, and the non-contact sensors 103 are positioned at the center of the scraper base.

Referring to fig. 6, a non-contact sensor 103 transmits a detection signal to detect the state of a shield tunneling machine scraper 102, and a sensor protection cover 104 protects the sensor end face from stress damage of crushed stone.

Referring to fig. 7, a plurality of distributed sensors gather and transmit signals through a sensor signal line 201 and a distributed signal line system 202 to a high transmittance wireless signal transmitter 301.

Referring to fig. 8, the software monitoring system unit 400 is composed of a signal transmission line 401 and a monitoring software system 402, the software monitoring system unit 400 not only can receive signals sent at intervals, but also can send active inquiry signals through the software system to perform sensing monitoring on the scraper state, the high-transmittance wireless signal transmitter 301 sends sensor signals and receives the sensor signals through the wireless signal receiver 302, and the wireless signal receiver 302 sends receiving signals to the software monitoring system unit 400, wherein the software monitoring system unit 400 is composed of the signal transmission line 401 and the monitoring software system 402, so that the received signals are monitored, and the scraper state of the shield tunneling machine is diagnosed.

In conclusion, the shield tunneling machine scraper falling wireless detection system based on the distributed sensor is specifically designed for specific application occasions of shield tunneling machine operation from the whole system design or the signal transmission mode. The metal scraper is detected by a non-contact sensor, and the falling state of the scraper is obtained. In addition, in order to adapt to the rotating working state of the shield machine, a wireless signal transmission mode solution is adopted, so that the shield machine is monitored without stopping, the working efficiency is improved, and the method is very suitable for the working occasion of the shield machine.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The shield tunneling machine scraper falling wireless detection system based on the distributed sensor comprises a monitoring system and is characterized by comprising a non-contact sensor unit (100), a distributed monitoring network unit (200), a high-transmission wireless transmission module unit (300) and a software monitoring system unit (400), wherein the whole system is formed from top to bottom, and the forming sequence is the software monitoring system unit (400), the high-transmission wireless transmission module unit (300), the distributed monitoring network unit (200) and the non-contact sensor unit (100).

2. The distributed sensor-based shield tunneling machine scraper drop wireless detection system according to claim 1, wherein the non-contact sensor unit (100) comprises a scraper base (101), a shield tunneling machine scraper (102), non-contact sensors (103), a sensor protection cover (104) and a connecting bolt (105), the non-contact sensor unit (100) adopts one or more non-contact sensors (103) to detect the state of the scraper (102), the number of the sensors is at least 2, and the non-contact sensors (103) are located at the center of the scraper base (101).

3. The wireless detection system for shield tunneling machine scraper drop based on distributed sensor according to claim 2, wherein the positions of the scrapers (102) to be monitored by the non-contact sensor (103) are determined by the position distribution of the scrapers (102) on the shield tunneling machine cutterhead, and the number of the monitored scrapers (102) is at least 24 groups.

4. The distributed sensor-based shield tunneling machine scraper drop wireless detection system according to claim 2, wherein said non-contact sensor (103) is embedded on a scraper base (101) to keep the scraper base (101) flush with the surface of the scraper (102).

5. The wireless detection system for the falling off of the shield tunneling machine scraper based on the distributed sensor according to claim 2, wherein the non-contact sensor (103) is an inductive and electromagnetic non-contact measurement method, and in order to prevent damages of broken stones and grits to the sensor in the operation process of the shield tunneling machine, a sensor protection cover (104) is designed on the surface of the non-contact sensor (103), and the sensor protection cover is made of a non-metal material and does not influence the propagation of an electric field and a magnetic field.

6. The distributed sensor-based shield tunneling machine scraper drop wireless detection system according to claim 1, wherein: the distributed monitoring network unit (200) is composed of a plurality of non-contact sensor signal lines (201) and a distributed signal line system (202), the distributed monitoring network unit (200) is composed of a plurality of sensor signal wired lines, the distributed signal line system (202) is used for carrying out walking line collection through a shield tunneling machine hydraulic oil line, damage of broken stones of the shield tunneling machine in operation to the sensor wired lines is avoided, and the sensor wired signals are connected to the high-transmission wireless signal transmitter (301) after collection.

7. The distributed sensor-based shield tunneling machine scraper drop wireless detection system according to claim 1, wherein: the high transmission wireless transmission module unit (300) is composed of a high transmission wireless signal transmitter (301) and a wireless signal receiver (302), and the high transmission wireless transmission module unit (300) can comprise one or more high transmission wireless signal transmitters (301).

8. The distributed sensor-based shield tunneling machine scraper drop wireless detection system according to claim 1, wherein: the software monitoring system unit (400) consists of a signal transmission line (401) and a monitoring software system (402), and the software monitoring system unit (400) not only can receive signals sent at intervals and at regular time, but also can send out active query signals through the software system to conduct sensing monitoring on the states of the scraper.