Tunnel foundation pit safety monitoring device

Abstract

The utility model discloses a tunnel foundation pit safety monitoring device which comprises a vehicle body, and the upper side of the vehicle body is fixedly connected with a vertical plate. According to the utility model, the stability of the detection box in the detection process is ensured through the clamping mechanism, and monitoring interruption or equipment damage caused by falling of the detection box is avoided, so that the detection stability and the operation safety are improved; the detection box can detect gas components at different heights in the tunnel foundation pit through the lifting mechanism, so that the detection range is expanded, and the comprehensiveness and accuracy of harmful gas monitoring are improved; cleaning of the dustproof net is achieved through the cleaning mechanism, the dustproof net is effectively prevented from being blocked by dust accumulation, meanwhile, the frequency of manual cleaning is reduced, and the service life of equipment is prolonged; and through the PLC control unit and the alarm unit in the detection box, sound-light alarm can be given out immediately when the harmful gas is detected to exceed the standard, so as to inform the workers behind in time, thereby effectively ensuring the safety of the constructors.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel monitoring, in particular to a safety monitoring device for tunnel foundation pits. Background Technique

[0002] Chinese Patent No. 202320338854.5 discloses a tunnel safety monitoring device, including: a moving mechanism, and a detection mechanism mounted on the moving mechanism through a support mechanism; the support mechanism includes a support rod mounted on the moving mechanism, a rotating rod hinged to the support rod, and a first driving member hinged between the support rod and the rotating rod, and the rotating rod and the support rod are arranged at an angle; the detection mechanism includes an air inlet channel, a gas collection cavity, an air outlet channel, a detection unit arranged in the air inlet channel, and a gas collection blade arranged in the gas collection cavity which are sequentially opened at one end of the rotating rod away from the support rod. Among them, the first driving member drives the rotating rod to rotate around the hinge point of the support rod and the rotating rod, so that the detection unit can monitor different heights, achieving the effect of detecting at different heights, improving the comprehensiveness of detection, and reducing potential safety hazards.

[0003] However, when the above patent is in use, the protective nets on both sides of the detection mechanism may be blocked by dust, resulting in dust falling into the gas collection cavity and reducing the monitoring accuracy. Content of the Utility Model

[0004] To solve the above technical problems, a safety monitoring device for tunnel foundation pits is provided. This technical solution solves the problem that the protective nets on both sides of the detection mechanism in the above patent may be blocked by dust when in use, resulting in dust falling into the gas collection cavity and reducing the monitoring accuracy as mentioned in the above background technique.

[0005] To achieve the above purposes, the technical solution adopted by the utility model is as follows:

[0006] A safety monitoring device for tunnel foundation pits includes a vehicle body. A vertical plate is fixedly connected to the upper side of the vehicle body. A notch one is formed on the outer surface of the vertical plate. A lifting mechanism is arranged in the notch one. A clamping mechanism is arranged above the lifting mechanism. A detection box is installed above the clamping mechanism. Dust-proof nets are installed on opposite sides of the detection box. A cleaning mechanism is arranged above the detection box.

[0007] Preferably, the lifting mechanism includes a first driving module installed at the top of the vertical plate. The output end of the first driving module extends into the first notch, and is fixedly connected to a first threaded rod which is rotatably connected to the inner wall of the detection box. Two first sliding rods are also arranged in the first notch, and the two first sliding rods are symmetrically distributed on both sides of the first threaded rod. An active block is threadedly connected to the outer surface of the first threaded rod and is slidably connected to the two first sliding rods. A second notch is formed on the outer surface of the active block.

[0008] Preferably, the clamping mechanism includes a second driving module installed on the left side of the active block. The output end of the second driving module extends into the second notch and is fixedly connected to a double-threaded screw which is rotatably connected to the inner wall of the active block. Two second sliding rods are arranged in the second notch, and the two second sliding rods are symmetrically distributed on both sides of the double-threaded screw. Sliders are threadedly connected to the opposite sides of the double-threaded screw, and the sliders are slidably connected to the two second sliding rods. Connection blocks are fixedly connected to the upper sides of the sliders, and clamping blocks are fixedly connected to the sides of the two connection blocks close to each other.

[0009] Preferably, the detection box includes a battery, an air detection unit, a PLC control unit and a hair dryer, all of which are installed inside the detection box. An alarm unit is installed on the upper side of the detection box, and a card slot is also formed on the lower side of the detection box.

[0010] Preferably, the cleaning mechanism includes a third driving module. The output end of the third driving module is fixedly connected to a gear. A third notch is formed on the upper side of the detection box. A toothed plate is slidably connected in the third notch and is meshed with the gear. A spring is fixedly connected to the outer side of the toothed plate and is fixedly connected to the inner wall of the detection box.

[0011] Preferably, a connecting member is fixedly connected to the outer side of the toothed plate, and a movable member is fixedly connected to the inner side of the connecting member.

[0012] Preferably, the air detection unit, the PLC control unit, the hair dryer and the alarm unit are all electrically connected to the battery.

[0013] Preferably, the clamping block is adapted to the size of the card slot.

[0014] Compared with the prior art, the present utility model provides a tunnel foundation pit safety monitoring device, which has the following beneficial effects:

[0015] 1. The present utility model ensures the stability of the detection box during the detection process through the clamping mechanism, avoiding monitoring interruption or equipment damage caused by the dropping of the detection box, thereby improving the detection stability and operation safety.

[0016] 2. The utility model enables the detection box to detect gas components at different heights in the tunnel foundation pit through the lifting mechanism, expanding the detection range and improving the comprehensiveness and accuracy of harmful gas monitoring.

[0017] 3. The utility model realizes the cleaning of the dust-proof net through the cleaning mechanism, effectively preventing dust accumulation, thereby preventing the dust-proof net from being blocked and reducing the detection accuracy. At the same time, it also reduces the frequency of manual cleaning and extends the service life of the equipment.

[0018] 4. The PLC control unit and the alarm unit in the detection box of the utility model can immediately give out audible and visual alarms when detecting that the harmful gas exceeds the standard, timely notify the staff behind, avoid personnel entering the dangerous area, and effectively guarantee the safety of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the utility model;

[0020] Figure 2 is the structural schematic diagram of the lifting mechanism of the utility model;

[0021] Figure 3 is the structural schematic diagram of the clamping mechanism of the utility model;

[0022] Figure 4 is the structural schematic diagram of the detection box of the utility model;

[0023] Figure 5 is the structural schematic diagram of the cleaning mechanism of the utility model.

[0024] The reference numerals in the figure are:

[0025] 1. Vehicle body;

[0026] 2. Vertical plate; 201. First notch;

[0027] 3. Lifting mechanism; 301. First drive module; 302. First threaded rod; 303. First slide rod; 304. Movable block; 305. Second notch;

[0028] 4. Clamping mechanism; 401. Second drive module; 402. Double-threaded screw; 403. Second slide rod; 404. Slide block; 405. Connecting block; 406. Clamping block;

[0029] 5. Detection box; 501. Battery; 502. Air detection unit; 503. PLC control unit; 504. Hair dryer; 505. Alarm unit; 506. Card slot;

[0030] 6. Dust-proof net;

[0031] 7. Cleaning mechanism; 701. Third driving module; 702. Gear; 703. Third notch; 704. Tooth plate; 705. Spring; 706. Connecting piece; 707. Movable part. Detailed implementation manner

[0032] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variants.

[0033] Embodiment 1

[0034] Please refer to Figures 1-5 As shown, a tunnel foundation pit safety monitoring device includes a vehicle body 1. A vertical plate 2 is fixedly connected to the upper side of the vehicle body 1. A first notch 201 is formed on the outer surface of the vertical plate 2. A lifting mechanism 3 is arranged in the first notch 201. A clamping mechanism 4 is arranged above the lifting mechanism 3. A detection box 5 is installed above the clamping mechanism 4. Dust-proof nets 6 are installed on opposite sides of the detection box 5. A cleaning mechanism 7 is arranged above the detection box 5.

[0035] In this embodiment, the user first clamps and fixes the detection box 5 through the clamping mechanism 4 to prevent the detection box 5 from falling during the detection process. Secondly, the vehicle body 1 is driven deep into the tunnel foundation pit. Since the types and densities of gases are very different, the detection box 5 can be raised or lowered through the lifting mechanism 3 to detect the components of gases at different heights, improving the detection range of harmful gases inside the tunnel foundation pit. Since there is inevitably a large amount of dust inside the tunnel foundation pit, during the forward movement of the vehicle body 1, the dust-proof nets 6 will block the dust, and the gas will enter the inside of the detection box 5 through the dust-proof nets 6. However, if there is a lot of dust on the outer surface of the dust-proof nets 6, it will block the dust-proof nets 6, resulting in the gas not flowing into the inside of the detection box 5. At this time, the staff can clean the dust on the outer surface of the dust-proof nets 6 through the cleaning mechanism 7, thereby improving the smoothness and effectiveness of the gas monitoring of the device.

[0036] Embodiment 2

[0037] Please refer to Figure 3As shown in the figure, the clamping mechanism 4 includes a second driving module 401. The second driving module 401 is installed on the left side of the movable block 304. The output end of the second driving module 401 extends into the notch two 305, and is fixedly connected with a double-threaded screw rod 402. The double-threaded screw rod 402 is rotatably connected to the inner wall of the movable block 304. Two sets of second sliding rods 403 are arranged inside the notch two 305, and the two sets of second sliding rods 403 are symmetrically distributed on both sides of the double-threaded screw rod 402. Both opposite sides of the double-threaded screw rod 402 are threadedly connected with sliders 404, and the sliders 404 are slidably connected to the two sets of second sliding rods 403. Connecting blocks 405 are fixedly connected to the upper sides of the sliders 404. A clamping block 406 is fixedly connected to one side where the two connecting blocks 405 are close to each other. A clamping groove 506 is also opened on the lower side of the detection box 5. The clamping block 406 is adapted to the size of the clamping groove 506.

[0038] In this embodiment, first, the second driving module 401 is turned on. The second driving module 401 drives the double-threaded screw rod 402 to rotate, and then the slider 404 moves inwards, so that the clamping block 406 on the upper side of the connecting block 405 moves inwards. Since the clamping block 406 is adapted to the size of the clamping groove 506, the two clamping blocks 406 on both sides will be clamped into the clamping groove 506 on the lower side of the detection box 5, thereby fixing the detection box 5 and avoiding the situation that the detection is interrupted due to the dropping of the detection box 5 during the detection process.

[0039] Embodiment 3

[0040] Please refer to Figure 2 As shown in the figure, the lifting mechanism 3 includes a first driving module 301. The first driving module 301 is installed on the top of the vertical plate 2. The output end of the first driving module 301 extends into the notch one 201, and is fixedly connected with a first threaded rod 302. The first threaded rod 302 is rotatably connected to the inner wall of the detection box 5. Two sets of first sliding rods 303 are also arranged inside the notch one 201, and the two sets of first sliding rods 303 are symmetrically distributed on both sides of the first threaded rod 302. The outer surface of the first threaded rod 302 is threadedly connected with a movable block 304, and the movable block 304 is slidably connected to the two sets of first sliding rods 303. A notch two 305 is opened on the outer surface of the movable block 304.

[0041] In this embodiment, first, the first driving module 301 is turned on. The first driving module 301 drives the first threaded rod 302 to rotate, and then drives the movable block 304 to lift, so that the detection box 5 on the upper side of the movable block 304 is height-adjusted, thereby detecting the components of gases at different heights and improving the detection range of harmful gases inside the tunnel foundation pit.

[0042] Embodiment 4

[0043] Please refer to Figure 4As shown, the detection box 5 includes a battery 501, an air detection unit 502, a PLC control unit 503, and a hair dryer 504, all of which are installed inside the detection box 5. An alarm unit 505 is installed on the upper side of the detection box 5. The air detection unit 502, the PLC control unit 503, the hair dryer 504, and the alarm unit 505 are all electrically connected to the battery 501.

[0044] In this embodiment, since the vehicle body 1 is constantly moving forward, the gas will enter the inside of the detection box 5 through the dust-proof net 6. The air detection unit 502 can detect the gas in the flowing air. When the detected toxic gas exceeds the defined value, the air detection unit 502 will transmit the gas signal to the PLC control unit 503. The PLC control unit 503 will control the alarm unit 505 above the detection box 5 to emit an alarm sound and light, thus warning the workers behind not to move forward.

[0045] Embodiment 5

[0046] Please refer to Figure 5 As shown, the cleaning mechanism 7 includes a driving module three 701. A gear 702 is fixedly connected to the output end of the driving module three 701. A notch three 703 is opened on the upper side of the detection box 5. A toothed plate 704 is slidably connected in the notch three 703. The toothed plate 704 is meshed with the gear 702. A spring 705 is fixedly connected to the outside of the toothed plate 704. The spring 705 is fixedly connected to the inner wall of the detection box 5. A connecting member 706 is fixedly connected to the outside of the toothed plate 704. A movable member 707 is fixedly connected to the inside of the connecting member 706.

[0047] In this embodiment, when there is a lot of dust on the outer surface of the dust-proof net 6, first turn on the driving module three 701. The driving module three 701 drives the gear 702 to rotate, and then drives the toothed plate 704 to move forward. When the gear 702 rotates to half of the position where it is not meshed with the toothed plate 704, due to the elastic force of the spring 705, the spring 705 will drive the toothed plate 704 to move backward, and then drive the movable member 707 inside the connecting member 706 to knock on the dust-proof net 6. At the same time, turn on the hair dryer 504. The hair dryer 504 will blow away the dust falling on the outer surface of the dust-proof net 6, thus preventing the dust from falling into the inside of the detection box 5.

[0048] Working principle and usage process of this device: First, the user turns on the second driving module 401. The second driving module 401 drives the double-threaded screw 402 to rotate, and then the slider 404 moves inward, causing the clamping block 406 on the upper side of the connecting block 405 to move inward. Since the clamping block 406 is adapted to the size of the card slot 506, the two clamping blocks 406 will be inserted into the card slot 506 under the detection box 5, thereby fixing the detection box 5 and avoiding the situation of monitoring interruption caused by the dropping of the detection box 5 during the detection process. Secondly, the vehicle body 1 goes deep into the tunnel foundation pit. Due to the great differences in the types and densities of gases, the first driving module 301 can be turned on. The first driving module 301 drives the first threaded rod 302 to rotate, and then drives the movable block 304 to rise and fall, so as to adjust the height of the detection box 5 on the upper side of the movable block 304, thereby detecting the components of gases at different heights and improving the detection range of harmful gases inside the tunnel foundation pit. Then, the third driving module 701 is turned on. The third driving module 701 drives the gear 702 to rotate, and then drives the toothed plate 704 to move forward. When the gear 702 rotates to half of the position where it is not engaged with the toothed plate 704, due to the elastic force of the spring 705, the spring 705 will drive the toothed plate 704 to move backward, and then drive the movable part 707 inside the connecting piece 706 to knock on the dust-proof net 6. At the same time, the hair dryer 504 is turned on, and the hair dryer 504 will blow away the dust falling on the outer surface of the dust-proof net 6, thereby preventing the dust from falling into the detection box 5. Since the vehicle body 1 is moving forward continuously, the gas will enter the detection box 5 through the dust-proof net 6, and the air detection unit 502 can detect the gas of the flowing air. When it detects that the toxic gas exceeds the defined value, the air detection unit 502 will transmit the gas signal to the PLC control unit 503, and the PLC control unit 503 will control the alarm unit 505 above the detection box 5 to emit an alarm sound and light, thereby warning the workers behind not to move forward.

[0049] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel foundation pit safety monitoring device, comprising a vehicle body (1), characterized in that: A vertical plate (2) is fixedly connected to the upper side of the vehicle body (1); a notch (201) is provided on the outer surface of the vertical plate (2); a lifting mechanism (3) is arranged in the notch (201); a clamping mechanism (4) is arranged on the upper side of the lifting mechanism (3); a detection box (5) is installed on the upper side of the clamping mechanism (4); dustproof nets (6) are installed on opposite sides of the detection box (5); and a cleaning mechanism (7) is arranged on the upper side of the detection box (5).

2. A tunnel foundation pit safety monitoring device according to claim 1, characterized in that: The lifting mechanism (3) comprises a driving module 1 (301), wherein the driving module 1 (301) is mounted on the top of the vertical plate (2), wherein an output end of the driving module 1 (301) extends into the interior of the slot 1 (201) and is fixedly connected to a threaded rod 1 (302), wherein the threaded rod 1 (302) is rotatably connected to the inner wall of the detection box (5), wherein two groups of sliding rods 1 (303) are further arranged inside the slot 1 (201), and the two groups of sliding rods 1 (303) are symmetrically distributed on both sides of the threaded rod 1 (302), wherein an outer surface of the threaded rod 1 (302) is threadedly connected to a movable block (304), and the movable block (304) is slidably connected to both groups of sliding rods 1 (303), and a slot 2 (305) is provided on the outer surface of the movable block (304).

3. A tunnel foundation pit safety monitoring device according to claim 1, characterized in that: The clamping mechanism (4) comprises a second driving module (401), wherein the second driving module (401) is installed on the left side of the movable block (304), wherein the output end of the second driving module (401) extends into the interior of the second slot (305) and is fixedly connected with a double-thread screw (402), wherein the double-thread screw (402) is rotatably connected to the inner wall of the movable block (304), wherein two groups of second sliding rods (403) are arranged inside the second slot (305), and the two groups of second sliding rods (403) are symmetrically distributed on both sides of the double-thread screw (402), wherein the two opposite sides of the double-thread screw (402) are threadedly connected with sliders (404), and the sliders (404) are slidably connected to the two groups of second sliding rods (403), wherein the upper sides of the sliders (404) are fixedly connected with connecting blocks (405), and the sides of the two connecting blocks (405) close to each other are fixedly connected with a clamping block (406); The detection box (5) comprises a battery (501), an air detection unit (502), a PLC control unit (503) and a hair dryer (504), all of which are installed inside the detection box (5). An alarm unit (505) is installed on the upper side of the detection box (5), and a card slot (506) is also provided on the lower side of the detection box (5).

4. A tunnel foundation pit safety monitoring device according to claim 1, characterized in that: The cleaning mechanism (7) comprises a driving module three (701), the output end of the driving module three (701) is fixedly connected to a gear (702), a slot three (703) is provided on the upper side of the detection box (5), a toothed plate (704) is slidably connected inside the slot three (703), the toothed plate (704) is meshingly connected to the gear (702), a spring (705) is fixedly connected to the outer side of the toothed plate (704), and the spring (705) is fixedly connected to the inner wall of the detection box (5).

5. A tunnel foundation pit safety monitoring device according to claim 4, characterized in that: The outer side of the tooth plate (704) is fixedly connected to a connecting piece (706), and the inner side of the connecting piece (706) is fixedly connected to a movable piece (707).

6. A tunnel foundation pit safety monitoring device according to claim 3, characterized in that: The air detection unit (502), the PLC control unit (503), the hair dryer (504) and the alarm unit (505) are all electrically connected to the battery (501).

7. A tunnel foundation pit safety monitoring device according to claim 3, characterized in that: The size of the card block (406) is adapted to that of the card slot (506).

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