Tunnel construction safety early warning device

Abstract

The utility model discloses a tunnel construction safety early warning device which comprises two strip-shaped plates parallel to each other, connecting plates are installed between the two strip-shaped plates and close to the two ends respectively, a guide rod is fixedly installed between the two connecting plates, a threaded rod is further rotatably installed between the two connecting plates through a bearing, and the threaded rod is connected with the guide rod. The threaded rod is parallel to the guide rod, a rotating shaft is rotationally installed on the lower strip-shaped plate through a bearing and located on the right side of the right connecting plate, the top end of the rotating shaft and the right end of the threaded rod are each provided with a first bevel gear, the two first bevel gears are meshed with each other, and a motor is installed at the bottom of the lower strip-shaped plate. According to the tunnel construction safety early warning device, the moving block, the guide rod, the threaded rod, the rotating shaft, the motor and the bevel gear are arranged to be matched, the moving block can be controlled to move along the guide rod, the moving positions of the gas detector and the dust detector on the mounting plate are controlled through the moving block, and therefore the working range of the device is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel construction safety early warning device. Background Art

[0002] During tunnel construction, due to the particularity of tunnels, leakage of toxic and harmful gases is an unavoidable problem. At the same time, a large amount of dust will be generated during tunnel excavation and the driving of construction vehicles. In addition, the space on the tunnel construction surface is relatively closed and the oxygen content may be too low. Combined with these factors, it is very easy to pose a threat to the life and health of construction workers. Therefore, during tunnel construction, safety warning devices are usually installed in the tunnel to detect the concentration of toxic and harmful gases and dust in the tunnel. Existing safety warning devices are usually fixed on the tunnel wall. Due to the fixed position of the safety warning device and the limitation of the working range of the detection instrument therein, the working range of the existing safety warning device is relatively small.

[0003] To this end, we design a tunnel construction safety early warning device here. Summary of the Invention

[0004] The purpose of the utility model is to provide a tunnel construction safety early warning device to address the deficiencies of the existing technology and to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel construction safety warning device, comprising two parallel strip plates, a connecting plate is installed between the two strip plates and near both ends, a guide rod is fixedly installed between the two connecting plates, a threaded rod is rotatably installed between the two connecting plates through bearings, the threaded rod is parallel to the guide rod, a rotating shaft is rotatably installed on the lower strip plate through bearings, the rotating shaft is located on the right side of the right connecting plate, a first bevel gear is installed on the top end of the rotating shaft and the right end of the threaded rod, and the two first bevel gears are meshed with each other, a motor is installed at the bottom of the lower strip plate, a second bevel gear is installed on the output shaft of the motor and the bottom end of the rotating shaft, and the two second bevel gears are meshed with each other;

[0006] A moving block is slidably installed on the guide rod, a threaded through hole is provided on the side of the moving block, and the threaded through hole cooperates with the threaded rod, a base plate is installed on the front of the moving block, a mounting plate is installed on the front of the base plate, and a gas detector, a dust detector and a warning light are installed on the front of the mounting plate.

[0007] Preferably, a mesh cover is installed on the front of the mounting plate by rotating through a hinge, the gas detector, the dust detector and the warning light are all located inside the mesh cover, and a pair of buckles are installed between the mesh cover and the mounting plate.

[0008] Preferably, two rollers are rotatably installed between the two strip plates, and the two rollers are respectively located at the two ends of the strip plates, a wide belt is arranged between the two rollers, the two connecting plates and the moving block are all located on the inner side of the wide belt, a rectangular through hole is provided on the wide belt, the front side of the moving block passes through the rectangular through hole, and the back side of the bottom plate is fixed to the edge of the rectangular through hole on the wide belt.

[0009] Preferably, both ends of the strip plate are in an arc shape, the axis of the roller is located at the center of the arc on the strip plate, and the outer circle radius of the roller is equal to the radius of the arc on the strip plate.

[0010] Preferably, a protective shell is installed at the inner edges of the two strip plates, and a gap is provided between the protective shell and the inner edges of the strip plates. The openings of the upper and lower gaps are arranged opposite to each other, and the upper and lower edges of the wide belt are respectively inserted into the upper and lower gaps.

[0011] Preferably, a protective cover is installed under the lower strip plate, and the motor and the second bevel gear are both located inside the protective cover.

[0012] Preferably, a controller is installed on the protective cover, and the motor, gas detector, dust detector and warning light are all connected to the controller.

[0013] Preferably, a plurality of evenly distributed fixing plates are installed on the outer sides of the two strip plates, and the fixing plates are L-shaped plates, the horizontal plates of the fixing plates are fixed to the strip plates, and mounting holes are reserved on the vertical plates of the fixing plates.

[0014] Compared with the existing technology, the present invention provides a tunnel construction safety early warning device with the following beneficial effects:

[0015] The tunnel construction safety warning device can detect the concentration of harmful gases and dust in the tunnel in real time by setting up a gas detector and a dust detector. By setting up a warning light, it can emit an audible and visual alarm to remind construction workers to evacuate. By setting up a moving block, a guide rod, a threaded rod, a rotating shaft, a motor and a bevel gear, the moving block can be controlled to move along the guide rod, and the moving position of the gas detector and dust detector on the mounting plate can be controlled by the moving block, thereby expanding the working range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the inner structure of the strip plate of the utility model;

[0018] Figure 3 This is a schematic diagram of the mounting plate structure of the utility model;

[0019] Figure 4This is the position relationship diagram of the roller and the wide belt of the utility model;

[0020] Figure 5 This is a diagram showing the position relationship between the wide belt and the protective shell of the utility model.

[0021] Figure numerals: 1. Strip plate; 2. Connecting plate; 3. Guide rod; 4. Threaded rod; 5. Rotating shaft; 6. First bevel gear; 7. Motor; 8. Second bevel gear; 9. Moving block; 10. Base plate; 11. Mounting plate; 12. Gas detector; 13. Dust detector; 14. Warning light; 15. Mesh cover; 16. Roller; 17. Wide belt; 18. Protective shell; 19. Protective cover; 20. Controller; 21. Fixed plate. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 5 In this embodiment: a tunnel construction safety warning device, comprising two parallel strip plates 1, please refer to Figure 1 and Figure 2 A connecting plate 2 is installed between the two strip plates 1 and near the two ends. A guide rod 3 is fixedly installed between the two connecting plates 2. A threaded rod 4 is also installed between the two connecting plates 2 through a bearing. The threaded rod 4 is parallel to the guide rod 3. A rotating shaft 5 is rotatably installed on the lower strip plate 1 through a bearing. The rotating shaft 5 is located on the right side of the right connecting plate 2. The top end of the rotating shaft 5 and the right end of the threaded rod 4 are both installed with a first bevel gear 6, and the two first bevel gears 6 are meshed with each other. A motor 7 is installed at the bottom of the lower strip plate 1. The motor 7 is a servo motor. A second bevel gear 8 is installed on the output shaft of the motor 7 and the bottom end of the rotating shaft 5, and the two second bevel gears 8 are meshed with each other. Start the motor 7, and the rotating shaft 5 can be driven to rotate through the transmission of the second bevel gear 8, and then the threaded rod 4 can be driven to rotate through the transmission of the first bevel gear 6.

[0024] See also Figure 3A moving block 9 is slidably mounted on the guide rod 3. A threaded through hole is provided on the side of the moving block 9, and the threaded through hole cooperates with the threaded rod 4. By controlling the rotation of the threaded rod 4, the moving block 9 can be controlled to translate along the guide rod 3. By controlling the rotation direction of the threaded rod 4, the moving direction of the moving block 9 can be controlled. A bottom plate 10 is installed on the front of the moving block 9. A mounting plate 11 is installed on the front of the bottom plate 10. A gas detector 12, a dust detector 13 and a warning light 14 are installed on the front of the mounting plate 11. The gas detector 12 is used to detect whether there is dust in the tunnel. There are harmful gases. The dust detector 13 is used to detect the dust concentration in the tunnel. The warning light 14 adopts an audible and visual warning light. The front of the mounting plate 11 is equipped with a mesh cover 15 by rotating the hinge. The gas detector 12, the dust detector 13 and the warning light 14 are all located inside the mesh cover 15. A pair of buckles are installed between the mesh cover 15 and the mounting plate 11. The function of the mesh cover 15 is to protect the gas detector 12, the dust detector 13 and the warning light 14. At the same time, the mesh cover 15 will not hinder the air from entering the sensors of the gas detector 12 and the dust detector 13.

[0025] See also Figure 4 The two ends of the strip plate 1 are arc-shaped, and two rollers 16 are rotatably installed between the two strip plates 1, and the two rollers 16 are respectively located at the two ends of the strip plate 1, and the axis of the roller 16 is located at the center of the arc on the strip plate 1. The outer circle radius of the roller 16 is equal to the radius of the arc on the strip plate 1. A wide belt 17 is provided between the two rollers 16. The two connecting plates 2 and the moving block 9 are all located on the inner side of the wide belt 17. A rectangular through hole is provided on the wide belt 17. The front side of the moving block 9 passes through the rectangular through hole. The back side of the bottom plate 10 is fixed to the edge of the rectangular through hole on the wide belt 17. When the moving block 9 moves, the wide belt 17 will also rotate. During the tunnel construction process and the back and forth travel of engineering vehicles, a large amount of dirt and dust will be raised. If these dirt and dust adhere to the guide rod 3 and the threaded rod 4, the moving block 9 may be stuck and cannot move. The function of the wide belt 17 is to block the raised dirt and dust and prevent a large amount of dirt and dust from falling on the guide rod 3 and the threaded rod 4.

[0026] See also Figure 5 A protective shell 18 is installed at the inner edge of the two strip plates 1. A gap is set between the protective shell 18 and the inner edge of the strip plate 1. The openings of the upper and lower gaps are arranged opposite to each other. The upper and lower edges of the wide belt 17 are respectively inserted into the upper and lower gaps. The function of the protective shell 18 is to prevent the edge of the wide belt 17 from warping and to limit the up and down movement of the wide belt 17.

[0027] A protective cover 19 is installed under the lower strip plate 1, and the motor 7 and the second bevel gear 8 are both located inside the protective cover 19. A controller 20 is installed on the protective cover 19, and the motor 7, gas detector 12, dust detector 13 and warning light 14 are all connected to the controller 20. The controller 20 can control the switch of the gas detector 12, the switch of the dust detector 13, the switch of the warning light 14, the switch of the motor 7, the direction and speed of the output shaft of the motor 7. The patrol interval time can be set on the panel of the controller 20. When the patrol time is reached, the controller 20 can start the motor 7. A drag chain is also installed on the upper strip plate 1, and the wiring of the gas detector 12, the dust detector 13 and the warning light 14 all pass through the drag chain. In view of the harsh construction environment in the tunnel, the drag chain adopts an outdoor drag chain.

[0028] The outer sides of the two strip plates 1 are each installed with a plurality of evenly distributed fixing plates 21, and the fixing plates 21 are L-shaped plates. The horizontal plates of the fixing plates 21 are fixed to the strip plates 1, and mounting holes are reserved on the vertical plates of the fixing plates 21. The device can be fixed to the wall of the tunnel with bolts through the fixing plates 21. After the device is installed, the wide belt 17 does not contact the wall of the tunnel. If the wall of the tunnel is uneven, a few gaskets can be placed on the back of the vertical plates of the fixing plates 21 during installation to increase the distance between the wide belt 17 and the tunnel wall, thereby preventing the raised parts of the wall from scratching the wide belt 17.

[0029] The working principle and usage process of the utility model are as follows: When the tunnel construction safety warning device is used, the patrol time is set on the controller 20, and then the gas detector 12 and the dust detector 13 are turned on. When the patrol time is reached, the motor 7 is started to control the moving block 9 to move from the rightmost end of the guide rod 3 to the leftmost end. When the patrol time is reached again, the motor 7 is started again to control the moving block 9 to move from the leftmost end of the guide rod 3 to the rightmost end, and so on. This expands the use range of the gas detector 12 and the dust detector 13. When the gas detector 12 detects that the toxic gas exceeds the standard or the dust detector 13 detects that the dust exceeds the standard, the controller 20 controls the warning light 14 to turn on, and emits an audible and visual alarm to remind workers to leave.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tunnel construction safety early warning device, characterized in that: The invention comprises two parallel strip plates (1), a connecting plate (2) is installed between the two strip plates (1) and near both ends, a guide rod (3) is fixedly installed between the two connecting plates (2), a threaded rod (4) is rotatably installed between the two connecting plates (2) through a bearing, the threaded rod (4) is parallel to the guide rod (3), a rotating shaft (5) is rotatably installed on the lower strip plate (1) through a bearing, the rotating shaft (5) is located on the right side of the right connecting plate (2), a first bevel gear (6) is installed on the top end of the rotating shaft (5) and the right end of the threaded rod (4), and the two first bevel gears (6) are meshed with each other, a motor (7) is installed on the bottom of the lower strip plate (1), a second bevel gear (8) is installed on the output shaft of the motor (7) and the bottom end of the rotating shaft (5), and the two second bevel gears (8) are meshed with each other; A moving block (9) is slidably mounted on the guide rod (3), a threaded through hole is provided on the side of the moving block (9), and the threaded through hole cooperates with the threaded rod (4), a base plate (10) is mounted on the front of the moving block (9), a mounting plate (11) is mounted on the front of the base plate (10), and a gas detector (12), a dust detector (13) and a warning light (14) are mounted on the front of the mounting plate (11).

2. A tunnel construction safety early warning device according to claim 1, characterized in that: A mesh cover (15) is mounted on the front of the mounting plate (11) by means of a hinge. The gas detector (12), the dust detector (13) and the warning light (14) are all located inside the mesh cover (15). A pair of buckles are mounted between the mesh cover (15) and the mounting plate (11).

3. The tunnel construction safety early warning device according to claim 1, characterized in that: Two rollers (16) are rotatably mounted between the two strip plates (1), and the two rollers (16) are respectively located at the two ends of the strip plates (1). A wide belt (17) is provided between the two rollers (16). The two connecting plates (2) and the moving block (9) are all located on the inner side of the wide belt (17). A rectangular through hole is provided on the wide belt (17), and the front side of the moving block (9) passes through the rectangular through hole. The back side of the bottom plate (10) is fixed to the edge of the rectangular through hole on the wide belt (17).

4. The tunnel construction safety early warning device according to claim 3, characterized in that: The two ends of the strip plate (1) are in an arc shape, the axis of the roller (16) is located at the center of the arc on the strip plate (1), and the outer circle radius of the roller (16) is equal to the radius of the arc on the strip plate (1).

5. The tunnel construction safety early warning device according to claim 3, characterized in that: A protective shell (18) is installed at the inner edge of each of the two strip plates (1), and a gap is provided between the protective shell (18) and the inner edge of each of the strip plates (1). The upper and lower openings of the gaps are arranged opposite to each other, and the upper and lower edges of the wide belt (17) are respectively inserted into the upper and lower gaps.

6. The tunnel construction safety early warning device according to claim 1, characterized in that: A protective cover (19) is installed below the lower strip plate (1), and the motor (7) and the second bevel gear (8) are both located inside the protective cover (19).

7. The tunnel construction safety early warning device according to claim 6, characterized in that: A controller (20) is installed on the protective cover (19), and the motor (7), the gas detector (12), the dust detector (13) and the warning light (14) are all connected to the controller (20).

8. The tunnel construction safety early warning device according to claim 1, characterized in that: The outer sides of the two strip plates (1) are both mounted with a plurality of evenly distributed fixing plates (21), the fixing plates (21) being L-shaped plates, the horizontal plates of the fixing plates (21) being fixed to the strip plates (1), and mounting holes being reserved on the vertical plates of the fixing plates (21).

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