A tunnel construction monitoring and alarm device

Abstract

The present invention discloses a tunnel construction monitoring alarm device, which relates to the field of tunnel monitoring equipment, and comprises a cabinet, an air duct, a rotating body and a monitoring board. The cabinet is installed on a bracket, and has two functions of blowing and exhausting air. The air duct is installed on the side of the cabinet and faces the side of the construction vehicle tunnel where the construction vehicle is coming. The rotating body comprises a weather vane and a one-way light-transmitting glass. The weather vane can rotate and drive the one-way light-transmitting glass to rotate when the cabinet blows and exhausts air. The monitoring board is installed on the side of the cabinet and is located at the mouth of the air duct through an extension plate. Multiple types of smoke sensors and gas sensors are installed on the monitoring board. When smoke and gas generated by combustion exist in the surrounding air, the smoke sensor and the gas sensor can feedback signals to realize alarm.

Description

Technical Field

[0001] The invention relates to the field of tunnel monitoring equipment, in particular to a tunnel construction monitoring alarm device. Background Art

[0002] Building subways is a method used by many cities to solve the problem of traffic congestion. In many cases, the subway transportation system is regarded as the backbone of urban transportation.

[0003] Since the subway runs underground and is not suitable for construction from the ground, it is necessary to build extremely long subway tunnels. During the construction of these tunnels, extremely complex power lines must be arranged according to the operation requirements. At the work location, there are personnel involved, and fires caused by high temperature, short circuit, water leakage and other problems of some power equipment on site can be quickly discovered. However, for the transportation tunnel sections that have been excavated and completed and the tracks have been laid, because the tunnels are tortuous, the monitoring of the lines in the tunnels at these locations cannot be timely and accurate, especially some short circuits with small currents. If the short circuit lasts for a long time and the current is small, the line may burn slowly, without obvious flames but with a small amount of smoke. This situation is very dangerous and difficult to detect because it may be located deep in the tunnel and the air is not circulating, which can easily lead to people in the tunnel being trapped and causing danger. If monitoring devices are set up deep in the tunnel, the number of these monitoring devices required will be extremely large, the cost will increase, and they will face the above-mentioned problems - it is not easy to inspect and maintain, and it is not easy to find problems. Even if there is a problem with the monitoring device itself, it is not known, which makes it even more difficult to obtain line information in the tunnel. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel construction monitoring and alarm device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tunnel construction monitoring and alarm device, comprising a cabinet, an air duct, a rotating body and a monitoring board, wherein the cabinet is installed on a bracket, and the cabinet has two functions of blowing and exhausting air, and the air duct is installed on the side of the cabinet and faces the side of the construction vehicle tunnel where the construction vehicle is coming, and the rotating body comprises a weather vane and a one-way light-transmitting glass, and the wind vane can rotate and drive the one-way light-transmitting glass to rotate when the cabinet blows and exhausts air, and the monitoring board is installed on the side of the cabinet through an extension plate and is located at the mouth of the air duct, and multiple types of smoke sensors and gas sensors are installed on the monitoring board, and the smoke sensors and gas sensors can feedback signals to realize alarm when smoke and gas generated by combustion are present in the surrounding air.

[0006] Preferably, the cabinet is divided into an upper cabinet and a lower cabinet, an air blowing fan is arranged in the upper cabinet to blow air to the outside of the cabinet, and an exhaust fan is arranged in the lower cabinet to exhaust air to the inside of the cabinet.

[0007] Preferably, the air duct includes a fixed plate, a partition section and an expansion section. The fixed plate installs the entire air duct on the side of the cabinet. A partition plate is arranged in the middle of the partition section to divide the air duct into two upper and lower parts. The expansion section is in a trumpet shape with four side walls expanding outward.

[0008] Preferably, the rotating body also includes a lubricating pad, a hemispherical cover and a light source. The lower part of the weather vane is connected to the one-way light-transmitting glass through a rotating shaft. The lubricating pad is fixedly mounted on the air duct. The hemispherical cover is mounted on the bottom of the lubricating pad through a sleeve. A plurality of light sources are provided and evenly spaced and installed on the side wall of the hemispherical cover to emit light to the one-way light-transmitting glass at the same time. The rotating shaft passes through the lubricating pad and the sleeve from top to bottom in sequence and is connected to the top of the one-way light-transmitting glass.

[0009] Preferably, the monitoring panel also includes a fixed frame, a torsion spring, a flap and a reflective plate, the side of the fixed frame is connected to the extension plate, the torsion spring is installed on the top of the fixed frame, a rotating shaft is provided at the edge of the flap, the rotating shaft passes through the torsion spring and both the upper and lower ends are rotatably installed on the fixed frame, and a reflective plate is provided at the lower end of the flap, and the reflective plate can reflect light passing through the one-way light-transmitting glass.

[0010] Preferably, a baffle is provided on the top of the flap, and the bottom leg of the torsion spring rests on the back of the baffle.

[0011] Preferably, a stopper is provided on the lower surface of the top panel of the fixing frame, and the stopper can block the baffle.

[0012] Preferably, a second wind vane is provided on the top of the rotating shaft, the smoke sensor and the gas sensor are both installed on the side of the flap, and the reflective plate is located opposite to the one-way light-transmitting glass.

[0013] Preferably, the bracket includes a bottom bracket and a mounting bracket, wherein the bottom bracket is installed below the cabinet and is provided with a through slot, and the mounting bracket is installed below the bottom bracket and mounts the bottom bracket on the side wall of the tunnel.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The flap provided in the invention can be opened by the airflow of the construction vehicle when the construction vehicle passes through the tunnel. The gas brought out from the tunnel by the construction vehicle can be detected by the different types of sensors provided, thereby realizing the detection of the internal environment of the tunnel;

[0016] 2. The wind vane 2 on the top of the flap in the invention can face the direction of the airflow in the airflow channel formed after the flap is opened, so as to obtain a larger airflow and more accurate information;

[0017] 3. When the flap of the cabinet of the invention is opened, air can be drawn inward through the lower cabinet. On the one hand, dust mixed in the airflow brought out by the construction vehicles can be drawn out. On the other hand, the wind vane can be driven to rotate, thereby rotating the one-way light-transmitting glass, so that the light from the light source cannot pass through, and the reflector cannot reflect the light normally, so that it can be quickly judged whether the monitoring device is working normally;

[0018] 4. If any part of the upper cabinet, lower cabinet, weather vane, flap, reflector, and one-way light-transmitting glass provided in the present invention fails to work properly, it will affect the reflection of light through the reflector, resulting in the inability to observe the alternating light and dark reflection phenomenon normally, so as to quickly determine whether the monitoring device is working properly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cabinet and air duct structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the monitoring board structure;

[0022] Figure 4 This is a schematic diagram of the monitoring board's decomposition structure;

[0023] Figure 5 It is a schematic diagram of the structure of the air duct and the rotating body;

[0024] Figure 6 This is a schematic diagram of the exploded structure of the air duct and the rotating body.

[0025] In the figure: 1-cabinet; 11-upper cabinet; 12-lower cabinet;

[0026] 2-air duct; 21-fixed plate; 22-partition section; 23-expansion section; 24-partition plate;

[0027] 3-rotating body; 31-bracket; 32-one-way light-transmitting glass; 33-lubricating pad; 34-hemispherical cover; 35-light source; 36-rotating shaft; 37-sleeve;

[0028] 4- monitoring board; 41- extension board; 42- smoke sensor; 43- gas sensor; 44- fixing frame; 441- block; 45- torsion spring; 46- flap; 461- baffle; 47- reflector; 48- shaft; 481- wind vane 2;

[0029] 5-bracket; 51-bottom bracket; 52-mounting bracket. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 6 The present invention provides a technical solution: a tunnel construction monitoring alarm device, comprising a cabinet 1, an air duct 2, a rotating body 3 and a monitoring board 4, wherein the cabinet 1 is installed on a bracket 5, and the cabinet 1 has two functions of blowing and exhausting. The air duct 2 is installed on the side of the cabinet 1 and faces the side of the construction vehicle tunnel where the construction vehicle is coming. The rotating body 3 includes a weather vane 31 and a one-way light-transmitting glass 32, and the weather vane 31 can rotate when the cabinet 1 blows and exhausts air and drives the one-way light-transmitting glass 32 to rotate. The monitoring board 4 is installed on the side of the cabinet 1 and is located at the mouth of the air duct 2 through an extension plate 41. Multiple types of smoke sensors 42 and gas sensors are installed on the monitoring board 4. The smoke sensor 42 and the gas sensor 43 can feedback signals to realize alarm when there is smoke and gas produced by combustion in the surrounding air. When the construction vehicle travels in the tunnel, it will inevitably drive the gas in the tunnel and move with the vehicle body. When the airflow is brought out, the airflow is detected by the smoke sensor 42 and the gas sensor 43, and then the gas environment in the tunnel is judged, and it is identified whether there is a flame burning the line. At the same time, the rotating body 3 is activated as the construction vehicle passes by. After activation, it can reflect the status of the entire device, so as to prevent the failure of information acquisition due to the failure of the monitoring device, which affects the normal monitoring of the tunnel.

[0032] In this embodiment, the cabinet 1 is divided into an upper cabinet 11 and a lower cabinet 12. A blowing fan is provided in the upper cabinet 11 to blow air to the outside of the cabinet 1, and an exhaust fan is provided in the lower cabinet 12 to exhaust air to the inside of the cabinet 2. The blowing and exhausting can make the rotating body 3 and the monitoring panel 4 realize opposite movements. The different feedbacks obtained by the two movements can realize the monitoring of the tunnel and the monitoring device itself.

[0033] In this embodiment, the air duct 2 includes a fixing plate 21, a partition section 22 and an expansion section 23. The fixing plate 21 installs the entire air duct 2 on the side of the cabinet 1. Multiple groups of air ducts 2 can be set on the side of the cabinet 1 to reduce measurement errors.

[0034] In this embodiment, a partition plate 24 is provided in the middle of the partition section 22 to divide the air duct 2 into two upper and lower parts. The expansion section 23 is in the shape of a trumpet with four side walls expanding outward. The two parts correspond to the upper cabinet 11 and the lower cabinet 12, that is, the upper cabinet 11 blows out gas through the upper part of the air duct 2, and the lower cabinet 12 draws gas through the lower part of the air duct 2.

[0035] In this embodiment, the rotating body 3 also includes a lubrication pad 33, a hemispherical cover 34 and a light source 35. The lower part of the weather vane 31 is connected to the one-way light-transmitting glass 32 through a rotating shaft 36. When the weather vane 31 is driven to rotate by the gas in the air duct 2, the one-way light-transmitting glass 32 below will be driven to rotate together, thereby achieving the effect of controlling the passage and resistance of light.

[0036] In this embodiment, the lubricating pad 33 is fixedly mounted on the air duct 2, and the hemispherical cover 34 is mounted on the bottom of the lubricating pad 33 through a sleeve 37. The surface of the hemispherical cover 34 is coated with paint to prevent light from passing through.

[0037] In this embodiment, the light source 35 is provided in plurality and is evenly spaced and installed on the side wall of the hemispherical cover 34 and emits light to the one-way light-transmitting glass 32 at the same time. The rotating shaft 36 passes through the lubricating pad 33 and the sleeve 37 from top to bottom and is connected to the top of the one-way light-transmitting glass 32. The light from the light source 35 can only be emitted through the one-way light-transmitting glass 32.

[0038] In this embodiment, the monitoring panel 4 also includes a fixed frame 44, a torsion spring 45, a flap 46 and a reflective plate 47. The side of the fixed frame 44 is connected to the extension plate 41, and the torsion spring 45 is installed on the top of the fixed frame 44. The torsion spring 45 is selected to have a torque smaller than the wind force exerted on the flap 46, or is replaced by an elastic rope.

[0039] In this embodiment, a rotating shaft 48 is provided at the edge of the flap 46, and the rotating shaft 48 passes through the torsion spring 46 and is rotatably mounted on the fixed frame 44 at both the upper and lower ends. A reflector 47 is provided at the lower end of the flap 46, and the reflector 47 can reflect light passing through the one-way light-transmitting glass 32. The reflector 47 does not rotate with the flap 46.

[0040] In this embodiment, a contact switch is provided at the edge of the flap 46, and the contact switch is electrically connected to the cabinet 1. When the contact switches on the two flaps 46 are in contact, air will be blown outwards through the upper cabinet 11 and continue to blow until the time reaches the set time, and then stop. A light sensor 49 is provided on the reflective plate 47, and the light sensor 49 is electrically connected to the lower cabinet 12. After the light becomes dim and does not meet the set light intensity, the lower cabinet 11 will be controlled to draw air inwards and continue to draw air until the time reaches the set time.

[0041] In this embodiment, a baffle 461 is provided on the top of the flap 46, and the bottom support leg of the torsion spring 45 is against the back of the baffle 461. A baffle 441 is provided on the lower surface of the top panel of the fixed frame 44, and the baffle 441 can block the baffle 461. The baffle 461 can block the flap 46 through the baffle 441 after the two flaps 46 rotate and make the contact switch contact, so as to prevent the flap 46 from excessive rotation.

[0042] In this embodiment, a second wind vane 481 is provided on the top of the rotating shaft 48, the smoke sensor 42 and the gas sensor 43 are both installed on the side of the flap 46, and the reflector 47 is positioned opposite to the one-way light-transmitting glass 32. The second wind vane 481 can automatically adjust to face the direction of the airflow according to the airflow brought out by the construction vehicle, and then fine-tune the position of the flap 46 so that the direction of the flap 46 after opening is parallel to the direction of the airflow, so as to obtain a larger airflow as possible, thereby ensuring that the sensor can detect the gas composition more accurately.

[0043] In this embodiment, the bracket 5 includes a bottom bracket 51 and a mounting bracket 52. The bottom bracket 51 is installed under the cabinet 1 and is provided with a through slot. The mounting bracket 52 is installed under the bottom bracket 51 and the bottom bracket 51 is installed on the side wall of the tunnel. The through slot makes it easy to observe the light reflected by the reflector 47 for easy observation.

[0044] Working principle: This device is installed at any position in the tunnel that can be observed by construction workers, replacing the traditional monitoring equipment installed at a deeper position in the tunnel. When a construction vehicle passes by, the airflow inside the tunnel brought by the construction vehicle will blow onto the surface of the flap 46, and the wind force will overcome the elastic force of the torsion spring 45 to open the flap 46. The airflow passes through the channel between the flaps 46, and the smoke sensor 42 and the gas sensor 43 installed will detect the gas from the inside of the tunnel. Because the gas is flowing and is brought from the tunnel by the vehicle, the presence of solid particles such as smoke in it is It can be detected more conveniently, and then it can be judged whether there is no obvious or no open flame burning in the tunnel. At the same time, the contact switch on the flap 46 is disconnected, and the lower cabinet 12 starts to suck the external gas into the lower cabinet 12 through the air duct 2. At this time, the wind vane 31 rotates, driving the one-way light-transmitting glass 32 to rotate 180°, blocking the light emitted by the light source 35 from passing through the one-way light-transmitting glass 32, and the light no longer shines on the reflector 47. The light sensor 49 senses the light change and starts to control the lower cabinet 12 to suck the external gas. Through the observation of the construction site personnel, it can be found that the reflected light becomes darker, which means that the flap 46 Normal opening and normal suction of external dusty gas by the lower cabinet 12 mean that all positions of the monitoring device can work normally; after the external airflow disappears, the flap 46 is automatically closed by the force of the torsion spring 45, and the contact switch contacts the upper cabinet 11 to blow air outwards. The blown airflow is used to clean the dust that may exist on the reflector 47 on the one hand, and to blow the weather vane 31 on the other hand, so that it rotates 180° again, so that the one-way light-transmitting glass 32 rotates 180°, so that light can pass through and finally shine on the reflector 47. The staff at the construction site will also see that the light becomes brighter, indicating that the upper cabinet 11 is blowing normally and the flap 46 is closed normally. The airflow brought out by the construction vehicles through the construction site can complete the monitoring of the internal environment of the tunnel. At the same time, the changes in light on the reflector 47 when the construction vehicles pass by can tell whether the monitoring device is working normally.

[0045] Based on the above, the invention can monitor the internal environment of the tunnel through the airflow brought out by construction vehicles passing through the deep part of the tunnel, and promptly remind construction workers of the situation in the tunnel to prevent them from being trapped due to disasters. At the same time, the changes in light on the reflective board when the construction vehicle passes by can indicate whether the monitoring device is working properly.

[0046] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A tunnel construction monitoring and alarm device, characterized in that: The invention comprises a cabinet (1), an air duct (2), a rotating body (3) and a monitoring panel (4), wherein the cabinet (1) is mounted on a bracket (5), the cabinet (1) has two functions of blowing and exhausting air, the air duct (2) is mounted on the side of the cabinet (1) and faces the side of the construction vehicle tunnel where the construction vehicle is coming, the rotating body (3) comprises a weather vane (31) and a one-way light-transmitting glass (32), the rotating body (3) is mounted on the bottom plate of the mouth of the air duct (2), the weather vane (31) is connected to the one-way light-transmitting glass (32) via a rotating shaft (36), and the wind vane (31) is connected to the one-way light-transmitting glass (32) via a rotating shaft (36). ), the wind vane (31) can rotate when the cabinet (1) blows or exhausts air and drives the one-way light-transmitting glass (32) to rotate; the monitoring panel (4) is installed on the side of the cabinet (1) through an extension panel (41) and is located at the mouth of the air duct (2); a plurality of types of smoke sensors (42) and gas sensors (43) are installed on the monitoring panel (4); the smoke sensors (42) and gas sensors (43) can be used to detect smoke and gas generated by combustion in the surrounding air and can feed back signals to an external alarm device to implement an alarm; The rotating body (3) further comprises a lubricating pad (33), a hemispherical cover (34) and a light source (35); the lower part of the weather vane (31) is connected to the one-way light-transmitting glass (32) via a rotating shaft (36); the lubricating pad (33) is fixedly mounted on the air duct (2); the hemispherical cover (34) is mounted on the bottom of the lubricating pad (33) via a sleeve (37); a plurality of light sources (35) are provided and are installed at intervals on the side wall of the hemispherical cover (34) to simultaneously emit light onto the one-way light-transmitting glass (32); and the rotating shaft (36) passes through the lubricating pad (33) and the sleeve (37) in sequence from top to bottom and is then connected to the top of the one-way light-transmitting glass (32).

2. A tunnel construction monitoring and alarm device according to claim 1, characterized in that: The cabinet (1) is divided into an upper cabinet (11) and a lower cabinet (12); the upper cabinet (11) is provided with an air blowing fan for blowing air to the outside of the cabinet (1), and the lower cabinet (12) is provided with an air exhaust fan for exhausting air to the inside of the cabinet (1).

3. A tunnel construction monitoring and alarm device according to claim 1, characterized in that: The air duct (2) comprises a fixing plate (21), a partition section (22) and an expansion section (23); the fixing plate (21) mounts the entire air duct (2) on the side of the cabinet (1); a partition plate (24) is arranged in the middle of the partition section (22) to divide the air duct (2) into two upper and lower parts; the expansion section (23) is in the shape of a trumpet with four side walls all expanding outwards.

4. A tunnel construction monitoring and alarm device according to claim 1, characterized in that: The monitoring panel (4) further comprises a fixed frame (44), a torsion spring (45), a flap (46) and a reflective plate (47); the side surface of the fixed frame (44) is connected to the extension plate (41); the torsion spring (45) is mounted on the top of the fixed frame (44); a rotating shaft (48) is provided at the edge of the flap (46); the rotating shaft (48) passes through the torsion spring (46) and is rotatably mounted on the fixed frame (44) at both the upper and lower ends; a reflective plate (47) is provided at the lower end of the flap (46); the reflective plate (47) is capable of reflecting light passing through the one-way light-transmitting glass (32); a contact switch is provided at the edge of the flap (46); and a light sensor (49) is provided on the reflective plate (47).

5. A tunnel construction monitoring and alarm device according to claim 4, characterized in that: A baffle (461) is provided on the top of the flap (46), and the bottom support leg of the torsion spring (45) rests on the back of the baffle (461).

6. A tunnel construction monitoring and alarm device according to claim 5, characterized in that: A stopper (441) is provided on the lower surface of the top panel of the fixing frame (44), and the stopper (441) is capable of blocking the baffle (461).

7. A tunnel construction monitoring and alarm device according to claim 4, characterized in that: A second wind vane (481) is provided on the top of the rotating shaft (48), the smoke sensor (42) and the gas sensor (43) are both installed on the side of the flap (46), and the reflective plate (47) is located opposite to the one-way light-transmitting glass (32).

8. A tunnel construction monitoring and alarm device according to claim 1, characterized in that: The bracket (5) comprises a bottom bracket (51) and a mounting bracket (52), wherein the bottom bracket (51) is installed below the cabinet (1) and is provided with a through slot, and the mounting bracket (52) is installed below the bottom bracket (51) and mounts the bottom bracket (51) on the side wall of the tunnel.

Images