Collecting and processing equipment for detecting toxic and harmful gases in tunnel

Abstract

The invention discloses collecting and processing equipment for tunnel toxic and harmful gas detection, the collecting and processing equipment comprises a base, a walking device arranged below the base and a collecting and detecting device arranged above the base, the walking device comprises walking wheels, a walking motor and steering wheels, and the collecting and detecting device comprises a sampling cylinder and a detecting cylinder. The walking device drives the base and the detection device arranged on the base to detect poisonous and harmful gas in the tunnel in real time, so that inspection type detection is achieved, when the equipment works, all-directional detection of the environment in the tunnel can be achieved only by arranging a limited number of the equipment, and the detection efficiency is improved. Compared with a traditional detection method in which a plurality of detection instruments are arranged, the cost can be effectively reduced, the detection area is more comprehensive, dead angles are avoided, meanwhile, continuous excavation of the tunnel can be adapted by changing the length of the inspection route, and therefore the situation that new detection instruments need to be continuously arranged in the excavation process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and particularly relates to a collection and processing device for detecting toxic and harmful gases in tunnels. Background Art

[0002] A tunnel is an engineering structure buried in the stratum and is a form of human utilization of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, and mine tunnels, etc. In 1970, the Tunnel Conference of the Organization for Economic Cooperation and Development integrated various factors and defined a tunnel as: "A cavity with a cross-sectional area greater than 2 square meters constructed underground in a specified shape and size for a certain purpose."

[0003] During the process of tunnel construction, there may be some cavities formed by ten-thousand-year physical and chemical reactions in the excavated soil mass. There may be some toxic gases, combustible gases, or toxic and harmful gases such as smoke formed during the excavation process in these cavities. During the tunnel excavation process, it is necessary to detect these toxic and harmful gases in real time. When the content of toxic and harmful gases exceeds the standard, it is necessary to take timely emergency responses.

[0004] The detection in the prior art is generally carried out through fixed detection instruments. However, the number of fixed detection instruments arranged is limited, and it is difficult to comprehensively monitor the tunnel. Moreover, as the tunnel is continuously excavated, new detectors need to be continuously arranged. The large number of detectors increases the cost, and the detected data cannot be actually transmitted, resulting in untimely emergency feedback from the supervision department and thus leading to accidents. Summary of the Invention

[0005] To solve the above problems, the present invention provides a collection and processing device for detecting toxic and harmful gases in tunnels, and the present invention is realized through the following technical solutions.

[0006] A collection and processing device for detecting toxic and harmful gases in tunnels includes a base, a traveling device arranged below the base, and a collection and detection device arranged above the base;

[0007] The traveling device includes traveling wheels, a traveling motor, and steering wheels. On the right side of the lower surface of the base, first ear plates are symmetrically fixed front and back. A vehicle axle is rotatably connected between the first ear plates. Both ends of the vehicle axle extend out of the first ear plates. The traveling wheels are fixed at both ends of the vehicle axle. A worm gear is fixed in the middle of the vehicle axle. The traveling motor is fixed on the lower surface of the base. The traveling motor is provided with a first output shaft horizontally to the right. A second ear plate is fixed on the lower surface of the base. The head of the first output shaft is rotatably connected in the second ear plate. A worm meshing with the worm gear is fixed on the first output shaft. The steering wheels are arranged below the left side of the base;

[0008] The sampling and detection device includes a sampling cylinder and a detection cylinder. The cross-section of the inner cavity of the sampling cylinder is rectangular. The sampling cylinder is fixedly connected to the center of the upper surface of the base. A reciprocating lead screw is rotatably connected to the center of the lower surface of the bottom plate of the sampling cylinder. The bottom of the reciprocating lead screw is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to the base. A driven bevel gear is fixedly connected to the bottom of the rotating shaft. A driving bevel gear meshing with the driven bevel gear is fixedly connected to the second output shaft. A piston is hermetically and slidably connected in the sampling cylinder, and the piston meshes with the reciprocating lead screw. Air inlet pipes are evenly and circumferentially fixedly connected to the top plate of the sampling cylinder. A first one-way valve is arranged in each air inlet pipe, and the direction in which the first one-way valve allows gas to pass is the direction pointing to the inner cavity of the sampling cylinder. The detection cylinders are fixedly connected to the upper surface of the base, and one is arranged on each of the front, back and right sides of the sampling cylinder. Each detection cylinder is connected to the sampling cylinder through a connecting pipe. An air outlet pipe is fixedly connected to the bottom of each detection cylinder. A second one-way valve is arranged in the air outlet pipe, and the direction in which the second one-way valve allows gas to pass is the direction away from the inner cavity of the detection cylinder. A combustible gas sensor, a toxic gas sensor and a smoke sensor are respectively fixedly connected in each detection cylinder.

[0009] Further, a collection hood is integrally and fixedly connected to the top of each air inlet pipe.

[0010] Further, a steering motor is fixedly connected to the left side of the base. The steering motor is provided with a second output shaft vertically downward. A U-shaped shaft seat is fixedly connected to the bottom of the second output shaft. A steering wheel is rotatably connected in the shaft seat.

[0011] Further, a first storage battery and a first control box are fixedly connected to the base. A main controller is fixedly connected in the first control box. The power interface of the main controller is electrically connected to the first storage battery. The main controller is also electrically connected to the steering motor, the traveling motor, the combustible gas sensor, the toxic gas sensor and the smoke sensor. A second control box is further included. A microprocessor and a second storage battery are fixedly connected in the second control box. The power interface of the microprocessor is electrically connected to the second storage battery. The microprocessor is wirelessly connected to the main controller through a wireless communication module. A display screen and an operation panel are fixedly connected to the second control box. The operation panel is electrically connected to the microprocessor. The display screen is electrically connected to the microprocessor through a first A / D converter.

[0012] Further, the wireless communication module is a 4G communication module.

[0013] Further, the first storage battery and the second storage battery are respectively electrically connected to the main controller and the microprocessor through a first power detection module and a second power detection module.

[0014] Further, a mounting plate is fixedly connected to the left side of the upper surface of the base through a support rod, an infrared camera is fixedly connected to the mounting plate, and the infrared camera is electrically connected to the main controller through a second A / D converter.

[0015] Further, a GPS positioning module is fixedly connected to the mounting plate, and the GPS positioning module is electrically connected to the main controller.

[0016] Further, the microprocessor is electrically connected to an alarm module, and the alarm module is a buzzer.

[0017] The beneficial effects of the present invention are as follows: the walking device drives the base and the detection device arranged on the base to detect the toxic and harmful gases in the tunnel in real time, so as to realize the inspection-type detection. When the device is working, only a limited number of devices need to be set to realize the full-range detection of the tunnel environment. Compared with the traditional detection method of arranging many detection instruments, it can not only effectively reduce the cost, but also make the detection area more comprehensive, avoiding dead corners. At the same time, by changing the length of the inspection route, it can adapt to the continuous excavation of the tunnel, thus avoiding the need to continuously set new detection instruments during the excavation process. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for the description of the specific embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 : Structural schematic diagram of the acquisition and processing device for detecting toxic and harmful gases in a tunnel according to the present invention;

[0020] Figure 2 : Structural schematic diagram of the acquisition and processing device for detecting toxic and harmful gases in a tunnel according to the present invention from another angle;

[0021] Figure 3 : Cross-sectional view of the acquisition and processing device for detecting toxic and harmful gases in a tunnel according to the present invention;

[0022] Figure 4 : Structural schematic diagram of the position of the second control box according to the present invention;

[0023] Figure 5 : Schematic diagram of the connection of each circuit element of the second embodiment of the present invention;

[0024] Figure 6 : Schematic diagram of the connection of each circuit element of the third embodiment of the present invention.

[0025] The reference numerals are as follows:

[0026] 1 - base, 2 - traveling wheels, 3 - traveling motor, 4 - steering wheels, 5 - first ear plate, 6 - axle, 7 - worm gear, 8 - first output shaft, 9 - second ear plate, 10 - worm, 11 - sampling cylinder, 12 - detection cylinder, 13 - reciprocating lead screw, 14 - rotating shaft, 15 - driven bevel gear, 16 - driving bevel gear, 17 - piston, 18 - intake pipe, 19 - first one - way valve, 20 - connecting pipe, 21 - exhaust pipe, 22 - second one - way valve, 23 - combustible gas sensor, 24 - toxic gas sensor, 25 - smoke sensor, 26 - collection hood, 27 - steering motor, 28 - second output shaft, 29 - shaft seat, 30 - first storage battery, 31 - first control box, 32 - main controller, 33 - second control box, 34 - microprocessor, 35 - second storage battery, 36 - wireless communication module, 37 - display screen, 38 - operation panel, 39 - first A / D converter, 40 - first battery power detection module, 41 - second battery power detection module, 42 - support rod, 43 - mounting plate, 44 - infrared camera, 45 - second A / D converter, 46 - GPS positioning module, 47 - alarm module. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] As Figure 1-6 shown, the present invention has the following three specific embodiments.

[0029] Embodiment 1

[0030] A collection and processing device for detecting toxic and harmful gases in a tunnel, comprising a base 1, a traveling device arranged below the base 1, and a collection and detection device arranged above the base 1;

[0031] The traveling device includes traveling wheels 2, a traveling motor 3, and a steering wheel 4. On the lower surface of the base 1, first ear plates 5 are symmetrically and fixedly connected to the front and rear on the right side. A vehicle axle 6 is rotatably connected between the first ear plates 5. Both ends of the vehicle axle 6 extend outside the first ear plates 5. The traveling wheels 2 are fixedly connected to both ends of the vehicle axle 6. A worm gear 7 is fixedly connected to the middle of the vehicle axle 6. The traveling motor 3 is fixedly connected to the lower surface of the base 1. The traveling motor 3 is provided with a first output shaft 8 that extends horizontally to the right. A second ear plate 9 is fixedly connected to the lower surface of the base 1. The head of the first output shaft 8 is rotatably connected in the second ear plate 9. A worm 10 that meshes with the worm gear 7 is fixedly connected to the first output shaft 8. The steering wheel 4 is arranged below the left side of the base 1;

[0032] The collection and detection device includes a sampling cylinder 11 and a detection cylinder 12. The cross-section of the inner cavity of the sampling cylinder 11 is rectangular. The sampling cylinder 11 is fixedly connected to the center of the upper surface of the base 1. A reciprocating lead screw 13 is rotatably connected to the center of the lower surface of the bottom plate of the sampling cylinder 11. A rotating shaft 14 is fixedly connected to the bottom of the reciprocating lead screw 13. The rotating shaft 14 is rotatably connected to the base 1. A driven bevel gear 15 is fixedly connected to the bottom of the rotating shaft 14. A driving bevel gear 16 that meshes with the driven bevel gear 15 is fixedly connected to the second output shaft. A piston 17 is hermetically and slidably connected in the sampling cylinder 11. The piston 17 meshes with the reciprocating lead screw 13. Air inlet pipes 18 are fixedly connected to the top plate of the sampling cylinder 11 in a circumferentially uniform manner. A first one-way valve 19 is provided in each air inlet pipe 18. The direction in which the first one-way valve 19 allows gas to pass is the direction pointing to the inner cavity of the sampling cylinder 11. The detection cylinders 12 are fixedly connected to the upper surface of the base 1 and one is arranged on each of the front, rear, and right sides of the sampling cylinder 11. Each detection cylinder 12 is connected to the sampling cylinder 11 through a communication pipe 20. An air outlet pipe 21 is fixedly connected to the bottom of each detection cylinder 12. A second one-way valve 22 is provided in the air outlet pipe 21. The direction in which the second one-way valve 22 allows gas to pass is the direction away from the inner cavity of the detection cylinder 12. A combustible gas sensor 23, a toxic gas sensor 24, and a smoke sensor 25 are respectively fixedly connected in each detection cylinder 12.

[0033] Preferably, a collection hood 26 is integrally fixedly connected to the top of each air inlet pipe 18.

[0034] Preferably, a steering motor 27 is fixedly connected to the left side of the base 1. The steering motor 27 is provided with a second output shaft 28 that extends vertically downward. A U-shaped shaft seat is fixedly connected to the bottom of the second output shaft 28. The steering wheel 4 is rotatably connected in the shaft seat 29.

[0035] In this embodiment:

[0036] During use, when the traveling motor 3 operates, it drives the first output shaft 8 and the worm 10 fixedly connected thereto to rotate. The worm wheel 7 meshing with the worm 10 rotates, thereby causing the axle 6 to rotate. The traveling wheels 2 fixedly connected to both ends of the axle 6 rotate, thus driving the device to move. When the steering motor 27 operates, it drives the second output shaft 28 to rotate, thereby driving the steering wheels 4 to rotate. The rotation of the steering wheels 4 can adjust the moving direction of the device.

[0037] When the first output shaft 8 rotates, it also drives the driving bevel gear 16 fixedly connected thereto to rotate. The driven bevel gear 15 meshing with it rotates, thereby causing the rotating shaft 14 and the reciprocating lead screw 13 to rotate. Since the piston 17 meshes with the reciprocating lead screw 13 and the piston 17 does not rotate in the rectangular sampling cylinder 11, when the reciprocating lead screw 13 rotates, the piston 17 moves up and down reciprocally.

[0038] When the piston 17 descends, it extracts the outside air into the sampling cylinder 11 through the intake pipe 18. Through the setting of the collection hood 26, the extraction area of the air is increased. When the piston 17 ascends, the air in the sampling cylinder 11 enters the detection cylinder 12 through the respective connecting pipes 20 and is discharged through the outlet pipe 21. Detection is carried out respectively by the combustible gas sensor 23, the toxic gas sensor 24, and the smoke sensor 25. As the device moves, different positions can be detected.

[0039] Embodiment 2

[0040] The difference from Embodiment 1 is that it further includes the following content:

[0041] A first storage battery 30 and a first control box 31 are fixedly connected to the base 1. A main controller 32 is fixedly connected inside the first control box 31. The power interface of the main controller 32 is electrically connected to the first storage battery 30. The main controller 32 is also electrically connected to the steering motor 27, the traveling motor 3, the combustible gas sensor 23, the toxic gas sensor 24, and the smoke sensor 25. It further includes a second control box 33. A microprocessor 34 and a second storage battery 35 are fixedly connected inside the second control box 33. The power interface of the microprocessor 34 is electrically connected to the second storage battery 35. The microprocessor 34 is wirelessly connected to the main controller 32 through a wireless communication module 36. A display screen 37 and an operation panel 38 are fixedly connected to the second control box 33. The operation panel 38 is electrically connected to the microprocessor 34. The display screen 37 is electrically connected to the microprocessor 34 through a first A / D converter 39.

[0042] Preferably, the wireless communication module 36 is a 4G communication module.

[0043] Preferably, the first storage battery 30 and the second storage battery 35 are electrically connected to the main controller 32 and the microprocessor 34 respectively through a first power detection module 40 and a second power detection module 41.

[0044] In this embodiment:

[0045] A control signal is sent through the operation panel 38, and the control signal is sent to the main controller 32 through the wireless communication module 36. Thus, the steering motor 27 and the traveling motor 3 can be controlled through the main controller 32, and further, the movement and steering of the device can be controlled.

[0046] The data detected by the combustible gas sensor 23, the toxic gas sensor 24, and the smoke sensor 25 are sent to the microprocessor 34 through the wireless communication module 36. The digital signal is converted into an image signal through the first A / D converter 39 and displayed on the display screen 37. Thus, the content of various toxic and harmful gases can be monitored in real time, providing a basis for quick response.

[0047] The power levels of the first battery 30 and the second battery 35 can be monitored in a timely manner through the first power detection module 40 and the second power detection module 41, so that charging can be carried out in a timely manner.

[0048] Embodiment 3

[0049] The difference from Embodiment 2 is that it further includes the following content:

[0050] On the left side of the upper surface of the base 1, a mounting plate 43 is fixedly connected through a support rod 42. An infrared camera 44 is fixedly connected to the mounting plate 43, and the infrared camera 44 is electrically connected to the main controller 32 through the second A / D converter 45.

[0051] Preferably, a GPS positioning module 46 is fixedly connected to the mounting plate 43, and the GPS positioning module 46 is electrically connected to the main controller 32.

[0052] Preferably, the microprocessor 34 is electrically connected to an alarm module 47, and the alarm module 47 is a buzzer.

[0053] In this embodiment:

[0054] Images are collected through the infrared camera 44. After the image signal is converted into a digital signal through the second A / D converter 45, it is then sent to the microprocessor 34 through the wireless communication module 36. The microprocessor 34 converts the received digital signal into an image signal and displays it on the display screen 37, thereby monitoring the environment inside the tunnel. At the same time, the traveling direction of the device can also be adjusted accordingly to reasonably avoid various obstacles.

[0055] When it is detected that the content of toxic and harmful gases exceeds the standard, the microprocessor 34 controls the alarm module 47 to work for reminder.

[0056] The real-time monitoring of the device is carried out through the GPS positioning module 46, so that the location where the content of toxic and harmful gases exceeds the standard can be known in a timely manner when an alarm occurs.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments only. Obviously, according to the content of this specification, many modifications and variations can be made. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An acquisition and processing device for detecting toxic and harmful gases in tunnels, characterized in that: It includes a base, a traveling device arranged below the base, and a collection and detection device arranged above the base; The traveling device includes traveling wheels, a traveling motor, and steering wheels. On the right side of the lower surface of the base, first ear plates are symmetrically fixed front and back. A vehicle axle is rotatably connected between the first ear plates. Both ends of the vehicle axle extend outside the first ear plates. The traveling wheels are fixed at both ends of the vehicle axle. A worm gear is fixed in the middle of the vehicle axle. The traveling motor is fixed on the lower surface of the base. The traveling motor is provided with a first output shaft horizontally to the right. A second ear plate is fixed on the lower surface of the base. The head of the first output shaft is rotatably connected in the second ear plate. A worm engaged with the worm gear is fixed on the first output shaft. The steering wheels are arranged below the left side of the base; The collection and detection device includes a sampling cylinder and a detection cylinder. The cross-section of the inner cavity of the sampling cylinder is rectangular. The sampling cylinder is fixed at the center of the upper surface of the base. A reciprocating lead screw is rotatably connected to the center of the lower surface of the bottom plate of the sampling cylinder. The bottom of the reciprocating lead screw is fixed with a rotating shaft. The rotating shaft is rotatably connected to the base. A driven bevel gear is fixed at the bottom of the rotating shaft. A driving bevel gear engaged with the driven bevel gear is fixed on the second output shaft. A piston is hermetically and slidably connected in the sampling cylinder. The piston is engaged with the reciprocating lead screw. Air inlet pipes are uniformly fixed around the circumference on the top plate of the sampling cylinder. A first one-way valve is arranged in each air inlet pipe. The direction in which the first one-way valve allows gas to pass is the direction pointing to the inner cavity of the sampling cylinder. The detection cylinders are fixed on the upper surface of the base and one is arranged on each of the front, back, and right sides of the sampling cylinder. Each detection cylinder is connected to the sampling cylinder through a connecting pipe. An air outlet pipe is fixed at the bottom of each detection cylinder. A second one-way valve is arranged in the air outlet pipe. The direction in which the second one-way valve allows gas to pass is the direction away from the inner cavity of the detection cylinder. A combustible gas sensor, a toxic gas sensor, and a smoke sensor are respectively fixed in each detection cylinder.

2. The acquisition and processing device for detecting toxic and harmful gases in a tunnel according to claim 1, wherein: A collection hood is integrally fixed at the top of each air inlet pipe.

3. The acquisition and processing device for detecting toxic and harmful gases in tunnels according to claim 2, characterized in that: A steering motor is fixed on the left side of the base. The steering motor is provided with a second output shaft vertically downward. A U-shaped shaft seat is fixed at the bottom of the second output shaft. The steering wheel is rotatably connected in the shaft seat.

4. The acquisition and processing device for detecting toxic and harmful gases in a tunnel according to claim 3, characterized in that: A first storage battery and a first control box are fixed on the base. A main controller is fixed in the first control box. The power interface of the main controller is electrically connected to the first storage battery. The main controller is also electrically connected to the steering motor, the traveling motor, the combustible gas sensor, the toxic gas sensor, and the smoke sensor. It also includes a second control box. A microprocessor and a second storage battery are fixed in the second control box. The power interface of the microprocessor is electrically connected to the second storage battery. The microprocessor is wirelessly connected to the main controller through a wireless communication module. A display screen and an operation panel are fixed on the second control box. The operation panel is electrically connected to the microprocessor. The display screen is electrically connected to the microprocessor through a first A / D converter.

5. The acquisition and processing device for detecting toxic and harmful gases in tunnels according to claim 4, characterized in that: The wireless communication module is a 4G communication module.

6. The acquisition and processing device for detecting toxic and harmful gases in tunnels according to claim 4, characterized in that: The first storage battery and the second storage battery are respectively electrically connected to the main controller and the microprocessor through a first power detection module and a second power detection module.

7. The acquisition and processing device for detecting toxic and harmful gases in a tunnel according to claim 4, characterized in that: On the left side of the upper surface of the base, a mounting plate is fixedly connected by a support rod. An infrared camera is fixedly connected to the mounting plate, and the infrared camera is electrically connected to the main controller through a second A / D converter.

8. The acquisition and processing device for detecting toxic and harmful gases in tunnels according to claim 7, wherein: A GPS positioning module is fixedly connected to the mounting plate, and the GPS positioning module is electrically connected to the main controller.

9. The acquisition and processing device for detecting toxic and harmful gases in a tunnel according to claim 7, characterized in that: The microprocessor is electrically connected to an alarm module, and the alarm module is a buzzer.

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