Tunnel cleaning operation environment monitoring and protecting equipment

Abstract

The invention discloses tunnel cleaning operation environment monitoring and protecting equipment which comprises a vehicle body, and a safety cabin is arranged on the vehicle body and is suitable for containing cleaning operation personnel; the environment monitoring device is arranged on the vehicle body and used for detecting environment indexes of cleaning operation in the tunnel; the ventilation device is connected with the safety cabin and the outside in an on-off mode, and the ventilation device is used for communicating the safety cabin with the outside and guiding and conveying gas in the outside into the safety cabin. The environment monitoring device monitors environment indexes in the cleaning operation process in the tunnel, when it is detected and recognized that the oxygen deficit risk, the dangerous gas risk and the fire risk occur in the cleaning operation environment in the tunnel, the safety cabin provides a temporary sheltering place, and the ventilation device supplements external fresh air into the safety cabin; and the safety of constructors in the cleaning operation in the tunnel is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel cleaning and screening operation machinery, and in particular to a tunnel cleaning and screening operation environment monitoring and protection device. Background Art

[0002] During the screening operation in the tunnel, there are three main types of safety hazards: one is the risk of hypoxia. When the oxygen content in the screening operation environment is too low, it will directly affect the normal progress of the screening operation; the second is harmful gases and dust. The large amount of harmful gases generated by the internal combustion engine of the tunnel screening vehicle, the dust and noise generated during the construction process, and the changes in ambient temperature and humidity will affect the health of the screening workers; the third is the fire risk. The insulation, aging, and overload of electrical equipment may cause equipment overheating and discharge, which may induce fires in the construction environment.

[0003] Due to poor ventilation conditions in the tunnel, when there is a risk of hypoxia and harmful gases, operators cannot breathe fresh air; in addition, there is no hidden place in the tunnel, and operators may have nowhere to hide from danger. Finally, since the above safety hazards are not monitored during the screening operation in the existing technology, it will not only seriously affect the life and health safety of construction workers, but may even affect the timing of early warning and rescue. Summary of the invention

[0004] The present invention provides a tunnel cleaning operation environment monitoring and protection device, which is used to monitor the cleaning operation environment during the cleaning operation in the tunnel, and when risks such as hypoxia, dangerous gases and fire are detected, fresh air from outside the tunnel is transported into the safety cabin.

[0005] The present invention provides a tunnel cleaning operation environment monitoring and protection device, the tunnel cleaning operation environment monitoring and protection device comprising:

[0006] The vehicle body is provided with a safety cabin suitable for accommodating cleaning and screening operators;

[0007] Environmental monitoring device, installed on the vehicle body, used to detect environmental indicators of screening operations in the tunnel;

[0008] The ventilation device can connect the safety cabin and the outside world in an on-off manner. The ventilation device is used to connect the safety cabin and the outside world and drain the gas in the outside world into the safety cabin.

[0009] Furthermore, an air supply pipe extending along the length direction of the tunnel is provided in the tunnel, and the ventilation device comprises:

[0010] An air delivery pipe is arranged on the vehicle body and connected between the air delivery pipe and the safety cabin;

[0011] The connecting assembly comprises a first joint arranged on the air supply pipe and a second joint arranged on the air delivery pipe, wherein the first joint and the second joint are detachably connected to realize the connection and disconnection of the air delivery pipe and the air supply pipe.

[0012] Further, the first joint has a first airflow cavity, the air inlet end of the first airflow cavity is connected to the air supply pipe, the air outlet end of the first airflow cavity is provided with a first plug suitable for blocking or opening the air outlet port, and the first plug is provided with a first reset member;

[0013] A second push rod is formed on the second joint, and the second push rod is configured to push the first plug to open the air outlet port of the first airflow cavity after the first joint is connected and matched with the second joint; when the first joint is disengaged from the second joint, the first reset member drives the first plug to reset under the action of its own elastic force to block the air outlet port on the first airflow cavity.

[0014] Optionally, the second joint has a second airflow cavity, the air outlet end of the second airflow cavity is communicated with the air delivery pipe, the air inlet end of the second airflow cavity is provided with a second plug suitable for blocking or opening the air inlet port, the second plug is provided with a second reset member, and the second reset member is connected to the elastic member;

[0015] A first push rod is formed on the first joint, and the first push rod is suitable for pushing the second plug to open the air inlet port of the second air flow chamber after the first joint is connected and matched with the second joint; when the first joint is disengaged from the second joint, the second reset member drives the second plug to reset under the elastic force of the elastic member to block the air inlet port on the second air flow chamber.

[0016] Preferably, the air outlet end of the second joint is connected to the air inlet end of the air pipe via a connecting hose.

[0017] Optionally, the ventilation device further comprises:

[0018] The mobile driving mechanism is arranged on the vehicle body and is drivingly connected to the second joint. The mobile driving mechanism can drive and adjust the relative position of the second joint on the vehicle body to make the second joint plug into or disengage from the first joint.

[0019] Optionally, the first connector is provided in plurality, and the plurality of first connectors are arranged at intervals along the air supply pipe, and the second connector can be selectively connected to one of the plurality of first connectors.

[0020] Furthermore, the number of the second connectors is at least two; as the vehicle body moves forward in the tunnel, the at least two second connectors are connected to the first connector alternately in sequence.

[0021] Optionally, the environment monitoring device comprises:

[0022] Monitoring module, used to detect environmental indicators of screening operations in tunnels;

[0023] A lifting mechanism is fixed on the vehicle body and is drivingly connected to the monitoring module, and is used to drive the monitoring module to move up and down.

[0024] Furthermore, the monitoring module includes a gas sensor, a dust sensor and a temperature and humidity sensor installed on the lifting mechanism.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] 1. In this embodiment, the environmental monitoring device monitors the environmental indicators during the cleaning operation in the tunnel. When it is detected that there is a risk of hypoxia, dangerous gas risk and fire risk in the cleaning operation environment in the tunnel, the safety cabin provides a temporary shelter, and the ventilation device replenishes fresh air from the outside into the safety cabin, which greatly improves the safety of construction personnel in the cleaning operation in the tunnel.

[0027] 2. When the first joint is disengaged from the second joint, the first plug can block the air outlet port of the first joint under the elastic action of the first reset member, thereby realizing automatic closure of the first joint.

[0028] 3. When the first joint is disengaged from the second joint, the second reset member drives the second plug to reset under the elastic action of the elastic member to block the air inlet port of the second joint, thereby realizing automatic closure of the second joint to prevent harmful gases and dust particles in the tunnel from entering the safety cabin through the second joint.

[0029] 4. When the vehicle body is moving, at least two second joints are connected to the first joints on the air supply pipe alternately in sequence to ensure that the air supply pipe is always connected to the air supply pipe, so that fresh air from outside the tunnel can be continuously and uninterruptedly introduced into the safety cabin.

[0030] 5. In this embodiment, the air outlet of the second connector is connected to the air inlet of the air pipe via a connecting hose. The connecting hose can bend and deform adaptively to adjust the position of the second connector, thereby ensuring that the second connector is smoothly aligned and connected with the first connector.

[0031] 6. The harmful gases produced by the internal combustion engine of the tunnel cleaning vehicle mainly include CO, CO2, NOx, SOx, HC, etc. The monitoring module is used to monitor the concentration, oxygen content, decibel value of noise, content of dust particles, ambient temperature and humidity of harmful gases such as CO, CO2, NOx, SOx, HC in the tunnel cleaning operation environment, and evaluate the possible safety risks of the workers in the tunnel cleaning environment.

[0032] In this embodiment, the monitoring module is driven to move up and down reciprocatingly by the lifting mechanism, which can increase the detection range of the monitoring module for the screening operation environment.

[0033] 7. In the present embodiment, the position adjustment device is used to adjust the position of the air inlet end of the guide tube, which can change the detection position so that the fire detection device is no longer limited to a specific position, thereby greatly improving the fire monitoring range of the fire detection device. In addition, compared with the flow form of free spread and diffusion of airflow, a first airflow driving member is added in the present embodiment to drive the airflow into the detection device quickly and smoothly in an active suction manner, so as to facilitate timely detection of whether there is a fire hazard, reduce the detection delay, and have a high timeliness.

[0034] 8. In the embodiment of the present invention, during the tunnel environment screening operation, the tiny particles generated by the pyrolysis stage of the combustible material are used as the monitoring index of the detection device.

[0035] The gas from the tunnel is introduced into the detection tube of the detection device through the flow guide device. At the same time, the light source emits a light beam to the detection tube and receives the light beam through the photosensitive device. If there is overheated material near the air inlet end of the flow guide tube, the solid microparticles generated by the overheated material are irradiated by the light source and scatter light pulse signals that are proportional to the size of the microparticles. The light pulse signals are received by the photosensitive device and converted into corresponding electric pulse signals by the signal amplifier and then amplified. The number of microparticles in the unit sampled air (pcs / L) can be obtained by counting the electric pulses in a detection cycle through the electronic pulse detector, and then the mass concentration of solid microparticles (μg / m^3) can be converted. The size of the fire hazard is evaluated by the size of the mass concentration of solid microparticles, so that the microparticles generated by the pyrolysis stage of the combustible material are used as monitoring indicators to evaluate the size of the fire hazard in the tunnel environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0037] Figure 1 It is a schematic diagram of the structure of the environmental monitoring and protection equipment for tunnel cleaning and screening operations;

[0038] Figure 2 yes Figure 1 A magnified view of the local structure at A in the middle, at which the second joint is connected to the first joint;

[0039] Figure 3 yes Figure 2 A schematic diagram of the structure of the second joint and the first joint;

[0040] Figure 4 yes Figure 1The enlarged view of the local structure at B in the middle shows that the second joint is out of engagement with the first joint;

[0041] Figure 5 yes Figure 4 A schematic diagram of the structure of the second joint and the first joint;

[0042] Figure 6 It is a schematic diagram of the structure of the environmental monitoring device;

[0043] Figure 7 It is a fire detection device;

[0044] Figure 8 yes Figure 7 A magnified view of the local structure at C in the middle;

[0045] Fig. 9 yes Figure 7 A schematic diagram of the structure of the detection device;

[0046] Fig.10 yes Figure 7 Schematic diagram of the connection between the filter assembly and the cache tank;

[0047] Reference numerals:

[0048] 1. Car body;

[0049] 11. Safety cabin;

[0050] 2. Environmental monitoring device;

[0051] 21. Gas sensor; 22. Dust sensor; 23. Temperature and humidity sensor; 24. Anemometer; 25. Noise sensor;

[0052] 26. lifting mechanism; 261. fixing plate; 262. lifting sliding member; 263. first fixing mounting member;

[0053] 27. A second fixed mounting member;

[0054] 3. Ventilation device;

[0055] 31. Gas pipeline;

[0056] 32, first joint; 321, first airflow cavity; 322, first plug; 323, first reset member; 324, first push rod; 325, first housing; 326, retaining ring; 327, first sealing ring; 328, first guide shaft; 329, mounting hole plate; 3210, plug-in slot; 3211, second sealing ring;

[0057] 33, second joint; 331, second air flow cavity; 332, second plug; 333, second reset member; 3331, stopper; 334, second push rod; 335, second housing; 336, end cover; 3361, through hole; 3362, avoidance hole; 337, fixing block; 338, elastic member;

[0058] 34. First air pump;

[0059] 35. Connect the hose;

[0060] 36. Mobile driving mechanism; 361. First driving member; 362. Transmission rod; 363. Sliding seat; 364. Second driving member;

[0061] 4. Fire detection device;

[0062] 41. Detection device; 411. Detection chamber; 412. Detection tube; 413. Light source; 414. Photosensitive device; 15. Light shield;

[0063] 421, flow guide pipe; 422, first air flow driving member;

[0064] 431, longitudinal movement mechanism; 4311, telescopic driving member; 43111, sliding block; 4312, telescopic rod;

[0065] 432, transverse movement mechanism; 4321, lead screw; 4322, ball bearing; 4323, power component;

[0066] 441, first filter element; 442, second filter element; 4401, filter element; 4402, mounting shell;

[0067] 45. Cache tank; 451. Waste outlet;

[0068] 46. ​​a second air flow driving member;

[0069] 471, first mounting plate; 472, second mounting plate; 473, third mounting plate; 4731, slide groove; 474, fourth mounting plate; 475, mounting block;

[0070] 100. Air supply pipe. DETAILED DESCRIPTION

[0071] The present invention will be further described below in conjunction with the accompanying drawings.

[0072] An embodiment of the present invention provides a tunnel cleaning operation environment monitoring and protection device, which includes a vehicle body 1 , an environment monitoring device 2 and a ventilation device 3 .

[0073] A safety cabin 11 for accommodating screening workers is provided on the vehicle body 1; an environmental monitoring device 2 is provided on the vehicle body 1 and is used to detect environmental indicators of screening operations in the tunnel; a ventilation device 3 can connect the safety cabin 11 and the outside world in an on-off manner, and the ventilation device 3 is used to drain and transport the gas in the outside world into the safety cabin 11 when the ventilation device 3 is connected to the safety cabin 11 and the outside world.

[0074] In this embodiment, the environmental monitoring device 2 monitors the environmental indicators during the cleaning operation in the tunnel. When it is detected that the risk of hypoxia, dangerous gas risk and fire risk occur in the cleaning operation environment in the tunnel, the safety cabin 11 provides a temporary shelter, and the ventilation device 3 replenishes fresh air from the outside into the safety cabin 11, which greatly improves the safety of construction personnel in the cleaning operation in the tunnel.

[0075] In this embodiment, when it is detected that the oxygen content in the screening operation environment in the tunnel is lower than 19.5%, it is identified as an oxygen deficiency risk; when the carbon monoxide CO concentration is higher than 30mg / m^3, the carbon dioxide CO2 concentration is higher than 9000mg / m^3, the nitric oxide NO concentration is higher than 15mg / m^3 or the nitrogen dioxide NO2 concentration is higher than 10mg / m^3, it is identified as a hazardous gas risk; when the dust PM in the air reaches PC-TWA 8mg / m^3, it is identified as a deflagration risk.

[0076] Optionally, the vehicle body 1 is a screening vehicle used for screening operations, and the safety cabin 11, the environmental monitoring device 2 and the ventilation device 3 are integrated on the screening vehicle, which can not only perform screening operations but also perform monitoring and risk protection during the screening operations, thereby improving the functionality of the screening vehicle.

[0077] ① Ventilation device 3:

[0078] like Figures 1 to 5 As shown, an air supply pipe 100 extending along the length direction of the tunnel is provided in the tunnel. Optionally, the air supply pipe 100 is fixed on the top wall of the tunnel, and at least one end of the air supply pipe 100 is connected to the external environment outside the tunnel.

[0079] The ventilation device 3 includes an air delivery pipe 31 and a connecting assembly.

[0080] The air delivery pipe 31 is arranged on the vehicle body 1 and communicates between the air supply pipe 100 and the safety cabin 11. The air inlet of the air delivery pipe 31 is connected to the air supply pipe 100 through a connecting assembly, and the air outlet of the air delivery pipe 31 is connected to the inlet of the first air pump 34, and the outlet of the first air pump 34 is connected to the safety cabin 11.

[0081] In this way, the air supply pipe 31 is connected to the safety cabin 11 through the first air pump 34. The first air pump 34 is used to suck fresh air from the outside into the safety cabin 11 through the air supply pipe 100 and the air supply pipe 31, so that the safety cabin 11 maintains a positive pressure, ensuring that the gas in the tunnel does not enter the safety cabin 11, and the gas in the safety cabin 11 can be discharged into the tunnel through gaps such as door gaps, thereby ensuring that the air in the safety cabin 11 is not polluted by the gas in the tunnel.

[0082] In this embodiment, the connecting component is used to connect the air supply pipe 100 and the air delivery pipe 31. The connecting component includes a first joint 32 arranged on the air supply pipe 100 and a second joint 33 arranged on the air delivery pipe 31. The first joint 32 and the second joint 33 are detachably connected to realize the connection and disconnection of the air delivery pipe 31 and the air supply pipe 100.

[0083] In this embodiment, the air outlet of the second connector 33 is connected to the air inlet of the air pipe 31 via a connecting hose 35. The connecting hose 35 can bend and deform adaptively to adjust the position of the second connector 33, thereby ensuring that the second connector 33 is smoothly aligned and connected with the first connector 32.

[0084] The air delivery pipe 31 is a telescopic hose, which can be telescopically deformed along its own axis to adjust its own length.

[0085] In this embodiment, the ventilation device 3 also includes a mobile driving mechanism 36 arranged on the vehicle body 1 and drivingly connected to the second connector 33. The mobile driving mechanism 36 can drive and adjust the relative position of the second connector 33 on the vehicle body 1 so that the second connector 33 can be plugged in or out of the first connector 32.

[0086] In this way, the two joints can be electrically connected without the need for operators to manually operate the first joint 32 and the second joint 33, which is efficient, convenient and labor-saving.

[0087] Specifically, the structure of the mobile driving mechanism 36 is as follows:

[0088] The moving drive mechanism 36 includes a forward-and-backward moving component that is arranged on the cleaning vehicle to move forward and backward, and a lifting and rotating component that is connected between the forward-and-backward moving component and the second joint 33 .

[0089] The lifting and rotating assembly includes a first driving member 361 installed on the forward and backward moving assembly, and a transmission rod 362 drivingly connected to the first driving member 361, and the transmission rod 362 is connected to the second joint 33. The first driving member 361 is used to drive the transmission rod 362 to lift up and down and rotate around the Z axis, thereby adjusting the position of the second joint 33 and making the second joint 33 dock with the first joint 32.

[0090] The forward and backward moving assembly includes a slide 363 slidably arranged on the cleaning vehicle in the forward and backward direction, and a second driving member 364 drivingly connected to the slide 363. The slide 363 drives the lifting and rotating assembly to move in the forward and backward direction of the cleaning vehicle under the drive of the second driving member 364, thereby indirectly adjusting the position of the second joint 33. Optionally, the second driving member 364 is a motor.

[0091] In this embodiment, a plurality of first joints 32 are provided, and the plurality of first joints 32 are arranged at intervals along the air supply pipe 100, and the second joint 33 can be selectively connected to one of the plurality of first joints 32. The air supply pipe 100 is provided with a plurality of air outlets, and the plurality of first joints 32 are installed and connected to the plurality of air outlets on the air supply pipe 100 in a one-to-one correspondence.

[0092] There are at least two second joints 33 , and the at least two second joints 33 are adapted to be alternately connected to one of the plurality of first joints 32 under the drive of the moving drive mechanism 36 .

[0093] With such arrangement, when the vehicle body 1 is moving, at least two second joints 33 are alternately connected to the first joints 32 on the air supply pipe 100 in sequence, ensuring that the air supply pipe 31 is always connected to the air supply pipe 100, so that fresh air from outside the tunnel can be continuously and uninterruptedly introduced into the safety cabin 11.

[0094] Taking two second connectors 33 as an example, the basic operation of alternately connecting the two second connectors 33 to the first connector 32 is as follows:

[0095] After docking the first second joint 33 with the closest first joint 32, continue to move the vehicle body 1 forward. During the forward movement of the vehicle body 1, the mobile drive mechanism 36 drives the second joint 33 to move relative to the vehicle body 1 to keep the second joint 33 connected to the first joint 32; when the vehicle body 1 moves to the second second joint 33 and approaches the next first joint 32, the mobile drive mechanism 36 drives the second joint 33 to dock with the first joint 32 it approaches, and then releases the connection between the first first joint 32 and the second joint 33; continue to move the vehicle body 1, and repeat this cycle, so that the two second joints 33 can be alternately connected to the first joint 32 in turn, so that the air supply pipe 31 can always be connected to the air supply pipe 100, so that fresh air from outside the tunnel can be continuously and uninterruptedly introduced into the safety cabin 11.

[0096] Of course, the number of the second connectors 33 may also be three or more, and those skilled in the art may adjust the number according to actual needs. This embodiment does not limit the number of the second connectors 33 .

[0097] In this embodiment, the first connector 32 and the second connector 33 are plugged together. The specific structure and connection method of the first connector 32 and the second head are as follows:

[0098] The structure and functional principle of the first joint 32 are as follows: the first joint 32 has a first airflow cavity 321, the air inlet end of the first airflow cavity 321 is connected to the air supply pipe 100, and the air outlet end of the first airflow cavity 321 is provided with a first plug 322 suitable for blocking or opening the air outlet port, and the first plug 322 is provided with a first reset member 323; a second push rod 334 is formed on the second joint 33, and the second push rod 334 is configured to push the first plug 322 to open the air outlet port of the first airflow cavity 321 after the first joint 32 is connected and matched with the second joint 33; when the first joint 32 is disengaged from the second joint 33, the first reset member 323 drives the first plug 322 to reset under the action of its own elastic force to block the air outlet port on the first airflow cavity 321.

[0099] With such arrangement, when the first connector 32 is disengaged from the second connector 33 , the first plug 322 can block the air outlet of the first connector 32 under the elastic action of the first reset member 323 , thereby realizing automatic closure of the first connector 32 .

[0100] Specifically, the first joint 32 includes a first shell 325 and a retaining ring 326 arranged in the first shell 325. The first airflow cavity 321 is jointly defined by the first shell 325 and the retaining ring 326. The first plug 322 is fitted on the retaining ring 326 to seal the air outlet port on the first airflow cavity 321.

[0101] A first sealing ring 327 is provided between the first plug 322 and the retaining ring 326 . When the first plug 322 and the retaining ring 326 are in contact with each other, the first sealing ring 327 is used to improve the airtightness of the connection between the first plug 322 and the retaining ring 326 .

[0102] Optionally, a mounting hole plate 329 for fixing the first reset member 323 is installed on the first shell 325, and the mounting hole plate 329 is located on the side of the first plug 322 away from the air outlet port. The first reset member 323 is a compression spring, one end of which is stopped on the first plug 322 and the other end is set on the mounting hole plate 329.

[0103] A first guide shaft 328 is also provided on the mounting hole plate 329, one end of the first guide shaft 328 is slidably set on the mounting hole plate 329, and the other end extends along the axial direction of the first shell 325 and is fixedly installed with the first plug 322; the compression spring is sleeved on the first guide shaft 328, and the first guide shaft 328 is used to provide guidance for the deformation and extension movement of the compression spring.

[0104] The structure and functional principle of the second joint 33: the second joint 33 has a second airflow chamber 331, the air outlet end of the second airflow chamber 331 is connected to the air supply pipe 31, and the air inlet end of the second airflow chamber 331 is provided with a second plug 332 suitable for blocking or opening the air inlet port, and the second plug 332 is provided with a second reset member 333, and the second reset member 333 is connected to the elastic member 338.

[0105] A first push rod 324 is formed on the first joint 32, and the first push rod 324 is suitable for pushing the second plug 332 to open the air inlet port of the second air flow chamber 331 after the first joint 32 is connected and matched with the second joint 33; when the first joint 32 is disengaged from the second joint 33, the second reset member 333 drives the second plug 332 to reset under the elastic force of the elastic member 338 to block the air inlet port on the second air flow chamber 331.

[0106] In this way, when the first connector 32 is disengaged from the second connector 33, the second reset member 333 drives the second plug 332 to reset under the elastic action of the elastic member 338 to block the air inlet port of the second connector 33, thereby realizing automatic closure of the second connector 33 and preventing harmful gases and dust particles in the tunnel from entering the safety cabin 11 through the second connector 33.

[0107] Specifically, the second joint 33 includes a second shell 335 having two axial end openings and an end cover 336 arranged at one axial end of the second shell 335, and the second air flow chamber 331 is jointly defined by the second shell 335 and the end cover 336; the end cover 336 is located at the air inlet end of the second air flow chamber 331, and the air inlet of the second air flow chamber 331 is defined by a through hole 3361 arranged on the end cover 336.

[0108] The second plug 332 is attached to the end cover 336 to seal the through hole 3361 thereon, that is, to seal the air inlet on the second air flow cavity 331 .

[0109] The second reset member 333 is a rod, and a fixing block 337 for slidably mounting the second reset member 333 is installed on the inner wall of the second shell 335 . One end of the second reset member 333 abuts against the second plug 332 , and the other end extends axially along the second shell 335 and passes through the fixing block 337 .

[0110] The elastic member 338 is a compression spring sleeved on the second reset member 333. One end of the elastic member 338 abuts against the fixed block 337, and the other end abuts against the stop portion 3331 formed on the second reset member 333. The elastic member 338 applies an elastic force to the second reset member 333 that tends to cause the second plug 332 to block the air inlet on the second airflow cavity 331.

[0111] An inserting slot 3210 is provided on one end of the first housing 325 facing the second connector 33, and the inserting slot 3210 is suitable for inserting one end of the second connector 33. The outer peripheral wall of the end cover 336 is matched with the inner peripheral wall of the first housing 325 in shape and size.

[0112] The air inlet end of the second connector 33 is inserted into the insertion groove 3210 of the first connector 32, so that the end cover 336 fits with the retaining ring 326, thereby realizing the connection and cooperation between the first connector 32 and the second connector 33. At this time, the first shell 325 and the second shell 335 are coaxially connected.

[0113] Preferably, a second sealing ring 3211 is provided between the end cover 336 and the retaining ring 326 .

[0114] The second push rod 334 extends along the axial direction of the second housing 335, one end of the second push rod 334 is disposed on the end cover 336, and the other end is used to stop against the first plug 322, so as to drive the first plug 322 to open the air outlet of the first airflow chamber 321. The first push rod 324 extends along the axis of the first housing 325, one end of the first push rod 324 is fixed on the retaining ring 326, and the other end passes through the avoidance hole 3362 on the end cover 336 and then stops against the second plug 332, so as to drive the second plug 332 to open the air inlet of the second airflow chamber 331.

[0115] ②Environmental monitoring device 2:

[0116] like Figure 1 and Figure 6 As shown, the environment monitoring device 2 includes a monitoring module and a lifting mechanism 26 .

[0117] The monitoring module is used to detect environmental indicators of tunnel cleaning operations. The harmful gases produced by the internal combustion engine of the tunnel cleaning vehicle mainly include CO, CO2, NOx, SOx, HC, etc. The monitoring module is used to monitor the concentration, oxygen content, decibel value of noise, content of dust particles, ambient temperature and humidity, etc. of harmful gases such as CO, CO2, NOx, SOx, HC, etc. in the tunnel cleaning operation environment to assess the possible safety risks of tunnel cleaning environment operators.

[0118] The monitoring module includes a gas sensor 21 , a dust sensor 22 , a temperature and humidity sensor 23 , an anemometer 24 and a noise sensor 25 which are installed on a lifting mechanism 26 .

[0119] In this embodiment, the gas sensor 21 is used to monitor the content of multiple gases. When the oxygen content is lower than the safety index, a warning signal is issued; when the oxygen content is close to 70% to 85% of the minimum safety index, the gas sensor 21 promptly issues a warning signal and triggers the alarm.

[0120] Optionally, the gas sensor 21 is an all-in-one gas sensor 21, and two all-in-one gas sensors 21 are provided, wherein one all-in-one gas sensor 21 is used to detect the contents of CO, O2, NO, and HC, and the other is used to monitor the contents of O3, CO2, SO2, and NO2.

[0121] The lifting mechanism 26 is fixed on the vehicle body 1 and connected to the monitoring module for driving the monitoring module to move up and down. In this embodiment, the lifting mechanism 26 drives the monitoring module to move up and down, which can increase the monitoring range of the monitoring module for the cleaning operation environment.

[0122] The structure of the lifting mechanism 26 is as follows: the lifting mechanism 26 includes a fixing plate 261 and a lifting sliding member 262 .

[0123] The fixing plate 261 is fixedly mounted on the side wall of the vehicle body 1, one end of the lifting sliding member 262 is slidably arranged on the fixing plate 261, and the other end is mounted with a first fixing member 263, and the monitoring module is mounted on the first fixing member 263. The first fixing member 263 is a plate member.

[0124] The lifting mechanism 26 slides up and down on the fixed plate 261 through the lifting sliding member 262, thereby driving the first fixed mounting member 263 and the monitoring module on the first fixed mounting member 263 to move up and down. Preferably, the gas sensor 21, the dust sensor 22, and the temperature and humidity sensor 23 are installed on the first fixed mounting member 263.

[0125] The anemometer 24 and the noise sensor 25 are mounted on a second fixed mounting member 27 , and the second fixed mounting member 27 is a plate member fixedly mounted on the vehicle body 1 .

[0126] ③ Fire detection device 4:

[0127] like Figure 1 , Figures 7 to 10 As shown, the fire detection device 4 includes a detection device 41, a flow guiding device and a position adjusting device.

[0128] The flow guide device includes a flow guide pipe 421 and a first airflow driving member 422. One end of the flow guide pipe 421 is connected to the environment in the tunnel, and the other end is connected to the detection device 41. The first airflow driving member 422 is configured to drive the airflow from the tunnel into the flow guide pipe 421 and from the flow guide pipe 421 into the detection device 41. The detection device 41 is used to detect and determine whether the airflow entering the detection device 41 has a fire hazard. The first airflow driving member 422 can be an air pump.

[0129] The position regulating device is drivingly connected to the air inlet end of the flow guiding tube 421 , and the position regulating device is used to regulate the position of the air inlet end of the flow guiding tube 421 .

[0130] In the embodiment of the present invention, the position adjustment device is used to adjust the position of the air inlet end of the guide tube 421, which can change the detection position so that the fire detection device 4 is no longer limited to a specific position, thereby greatly improving the fire monitoring range of the fire detection device 4; in addition, compared with the flow form of free spread and diffusion of airflow, a first airflow driving member 422 is added in the present embodiment to drive the airflow to enter the detection device 41 quickly and smoothly, so as to facilitate timely detection of whether there is a fire hazard, reduce the detection delay, and have a high timeliness.

[0131] Optionally, the flow guide tube 421 is a telescopic hose.

[0132] The position adjustment device in this embodiment includes a longitudinal movement mechanism 431 and a transverse movement mechanism 432 .

[0133] The air inlet end of the guide tube 421 is arranged on the longitudinal movement mechanism 431, and the longitudinal movement mechanism 431 is used to drive the air inlet end of the guide tube 421 to move in the up and down direction; the transverse movement mechanism 432 is drivingly connected to the longitudinal movement mechanism 431, and the transverse movement mechanism 432 is used to drive the longitudinal movement mechanism 431 to move transversely to adjust the transverse position of the air inlet end of the guide tube 421.

[0134] In this embodiment, the vertical position and the horizontal position of the air inlet end of the air guide pipe 421 are adjusted by the longitudinal movement mechanism 431 and the transverse movement mechanism 432 respectively.

[0135] The transverse movement mechanism 432 in this embodiment is a screw transmission mechanism, which includes a screw 4321 extending along the axial direction, a ball 4322 rotatably arranged on the screw 4321 , and a power component 4323 drivingly connected to the screw 4321 .

[0136] The ball bearing 4322 is connected to the longitudinal movement mechanism 431, and the lead screw 4321 rotates under the drive of the power component 4323 to drive the ball bearing 4322 thereon to move axially along the lead screw 4321, thereby driving the longitudinal movement mechanism 431 and the air inlet end of the guide tube 421 to move laterally. Optionally, the power component 4323 is a motor, and the output shaft of the motor is in driving connection with the lead screw 4321.

[0137] The longitudinal movement mechanism 431 in this embodiment includes a telescopic driving member 4311 and a telescopic rod 4312 .

[0138] The telescopic driving member 4311 is mounted on the ball 4322. Optionally, the telescopic driving member 4311 is a cylinder or an oil cylinder.

[0139] One end of the telescopic rod 4312 is telescopically connected to the telescopic driving member 4311 , and the other end extends upward and is telescopically connected to the air inlet end of the guide pipe 421 .

[0140] In this embodiment, the telescopic driving member 4311 drives the telescopic rod 4312 to move upward and downward, thereby adjusting the vertical position of the air inlet end of the guide tube 421.

[0141] The detection device 41 includes a detection chamber 411 , a detection tube 412 , a light source 413 and a photosensitive device 414 arranged in the detection chamber 411 .

[0142] The detection tube 412 is a transparent tube, one end of which is connected to the air outlet of the guide tube 421, and the other end passes through the detection chamber 411 to be connected to the tunnel; the light source 413 and the photosensitive device 414 are located on opposite sides of the detection tube 412, the light source 413 is set toward the detection tube 412 and is used to emit a light beam to the detection tube 412, and the photosensitive device 414 is used to receive the light pulse signal generated by the tiny particles generated by the combustible material in the pyrolysis stage when irradiated with light.

[0143] In the embodiment of the present invention, during the tunnel environment screening operation, the tiny particles generated by the combustible material during the pyrolysis stage are used as the monitoring index of the detection device 41.

[0144] In the fire detection device 4 of the embodiment of the present invention, the gas from the tunnel is introduced into the detection tube 412 of the detection device 41 by the flow guide device. At the same time, the light source 413 emits a light beam to the detection tube 412, and the light beam is received by the photosensitive device 414. If there is material overheating near the air inlet end of the flow guide tube 421, the solid microparticles generated by the overheating of the material are irradiated by the light source 413, and scatter light pulse signals that are proportional to the size of the microparticles. The light pulse signal is received by the photosensitive device 414 and converted into a corresponding electric pulse signal by the signal amplifier and then amplified. The number of microparticles in the unit sampled air (pcs / L) can be obtained by counting the electric pulses in a detection cycle through the electronic pulse detector, and then the mass concentration of solid microparticles (μg / m^3) can be converted. The size of the fire hazard is evaluated by the size of the mass concentration of the solid microparticles, so that the microparticles generated by the combustible material in the pyrolysis stage are used as monitoring indicators to evaluate the size of the fire hazard in the tunnel environment.

[0145] It should be noted that the change characteristics of smoke particles in the process of combustible materials from pyrolysis to stable smoldering are quite obvious. During the pyrolysis process, low-concentration solid tiny particles are released, and the solid tiny particles are invisible nano-scale particles. The particle size of high-concentration smoke particles released by smoldering is relatively large. Experimental studies have found that within 3 minutes of pyrolysis, the particle size distribution of smoke particles remains basically unchanged, and the concentration increases slightly. After the release of visible smoke, the concentration of smoke particles increases significantly. After 6 minutes, the smoke particles transition from pyrolysis to smoldering. The concentration peak of about 50nm is generated by pyrolysis, while the peak near 150nm is formed by the condensation of high-concentration smoke particles generated by smoldering.

[0146] Therefore, the tiny particles produced by combustible materials during the pyrolysis stage can be used as monitoring indicators to evaluate the size of fire hazards in the tunnel environment. When the detected solid tiny particles reach a certain concentration, timely warnings can be issued, thereby improving the safety monitoring level of the screening environment.

[0147] It should be pointed out that the light source 413, the photosensitive device 414, and the supporting signal amplifier and electronic pulse detector are all existing technologies, and the specific structures of the above components are not described in detail.

[0148] In order to reduce the influence of the external light source 413 on the detection result, the detection device 41 further includes a light shielding cover 15 irradiating outside the light source 413 and the photosensitive device 414 , and the detection chamber 411 is defined by the light shielding cover 15 .

[0149] In this embodiment, the first airflow driving member 422 is disposed downstream of the detection tube 412. Specifically, the outlet end of the detection tube 412 is connected to the airflow inlet of the first airflow driving member 422, and the airflow outlet of the first airflow driving member 422 is connected to the tunnel.

[0150] Along the flow direction of the airflow, a filter assembly is disposed downstream of the flow guide pipe 421 and upstream of the detection device 41 .

[0151] The filter assembly includes a first filter element 441 , and the filter pore diameter of the first filter element 441 is 0.05 μm to 0.1 μm.

[0152] The first filter 441 is used to filter dust in the inhaled air to prevent it from interfering with the detection result. The first airflow driving member 422 is turned on to inhale the dusty air from the tunnel into the guide tube 421, and the air flows through the first filter 441, which filters the dust in the air. The filtered air enters the detection device 41 for monitoring.

[0153] Since the particle size of dust is usually 0.1μm~1μm, and the particle size of solid tiny particles generated by overheating of materials is generally nanometer-level, it is only necessary to select the first filter element 441 with a filter pore diameter of 0.05μm~0.1μm to filter the dust. Since the particle size of solid tiny particles generated by overheating of materials is generally nanometer-level, the solid tiny particles will not be filtered by the first filter element 441 and can enter the detection tube 412.

[0154] In order to improve the filtering effect, the filtering component further includes a second filter element 442 located downstream of the first filter element 441 , and the filter hole diameter of the second filter element 442 is smaller than the filter hole diameter of the first filter element 441 .

[0155] When in use, the gas is initially filtered by the first filter element 441 and then further filtered by the second filter element 442, thereby improving the filtering effect.

[0156] The first filter element 441 and the second filter element 442 each include a filter element 4401 and a mounting shell 4402 . The filter holes are arranged on the filter element 4401 , and the filter element 4401 is detachably mounted on the mounting shell 4402 .

[0157] The mounting shell 4402 has an air flow inlet and an air flow outlet, and the filter element 4401 is located between the air flow inlet and the air flow outlet of the mounting shell 4402; the mounting shell 4402 is provided with a slot for inserting the filter element 4401, and the filter element 4401 can be detachably inserted into the slot of the mounting shell 4402, which is convenient for installation and disassembly.

[0158] A buffer tank 45 is provided between the first filter element 441 and the second filter element 442; the air inlet of the buffer tank 45 is connected to the air outlet of the first filter element 441, the air outlet of the buffer tank 45 is connected to the air inlet of the second filter element 442, and the waste outlet 451 of the buffer tank 45 is connected to the tunnel. Preferably, the air inlet of the buffer tank 45 is arranged higher than the air outlet.

[0159] It is understandable that if the buffer tank 45 is not provided between the guide tube 421 and the detection device 41, the airflow with unstable pressure and flow rate entering the guide tube 421 from the tunnel will directly flow into the detection device 41, affecting the detection effect. In this embodiment, by providing the buffer tank 45, the stability of the airflow is improved, so that the unstable airflow from the guide tube 421 first enters the buffer tank 45 for slow flow, forming an airflow with stable pressure and flow rate, and then enters the detection device 41 for detection, thereby improving the detection accuracy and reducing the impact on the detection device 41.

[0160] The excess gas in the buffer tank 45 after being filtered by the first filter element 441 can be discharged from the waste outlet 451 of the buffer tank 45, and the waste outlet 451 is connected to the second airflow driving element 46, the air inlet of the second airflow driving element 46 is connected to the waste outlet 451, and the air outlet of the second airflow driving element 46 is connected to the tunnel, and the second airflow driving element 46 is configured to drive the airflow from the buffer tank 45 to be discharged from the waste outlet 451 into the tunnel. Optionally, the second airflow driving element 46 is an air pump.

[0161] like Figure 7 As shown, the fire detection device 4 in the embodiment of the present invention is installed on the outer side wall of the vehicle body 1 through a mounting frame.

[0162] The mounting frame includes a first mounting plate 471 , and the buffer tank 45 , the second filter element 442 , the detection device 41 and the first airflow driving element 422 are sequentially arranged and mounted on the first mounting plate 471 .

[0163] The first mounting plate 471 is installed on the outer side wall of the vehicle compartment along a transverse extension.

[0164] The mounting frame further includes a second mounting plate 472 located below the first mounting plate 471 , and the second airflow driving member 46 is mounted on the second mounting plate 472 .

[0165] The mounting frame also includes a third mounting plate 473 for mounting the position adjustment device. The lead screw 4321 is rotatably mounted on the third mounting plate 473 through a mounting block 475 . The power component 4323 is also fixedly mounted on the third mounting plate 473 .

[0166] A slide groove 4731 extending in the transverse direction is provided on the third mounting plate 473, and a slider 43111 which slides with the slide groove 4731 is provided at one end of the telescopic driving member 4311 away from the telescopic rod 4312. The slide groove 4731 is used to provide guidance for the overall transverse movement of the longitudinal movement mechanism 431, thereby improving the stability of the transverse movement of the air inlet end of the guide tube 421.

[0167] The mounting frame further includes a fourth mounting plate 474 , the first filter element 441 is mounted on the fourth mounting plate 474 , and the first mounting plate 471 , the second mounting plate 472 and the third mounting plate 473 are all fixedly mounted to the fourth mounting plate 474 .

[0168] like Figure 1 As shown, in the tunnel cleaning and screening operation environment monitoring and protection equipment in the embodiment of the present invention, during the cleaning and screening operation in the tunnel, the environmental monitoring device 2 monitors the risk of hypoxia, the risk of dangerous gases, the decibel value of noise, the content of dust particles, the ambient temperature and humidity, etc.; the fire detection device 4 monitors the fire risk in real time; the safety cabin 11 provides a temporary shelter, and the ventilation device 3 replenishes the safety cabin 11 with fresh air from the outside, which greatly improves the safety of construction personnel in the cleaning and screening operation in the tunnel.

[0169] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tunnel cleaning operation environment monitoring and protection device, characterized in that: include: The vehicle body is provided with a safety cabin suitable for accommodating cleaning and screening operators; Environmental monitoring device, installed on the vehicle body, used to detect environmental indicators of screening operations in the tunnel; The ventilation device can connect the safety cabin and the outside world in an on-off manner. The ventilation device is used to connect the safety cabin and the outside world and drain the gas in the outside world into the safety cabin.

2. The tunnel cleaning operation environment monitoring and protection equipment according to claim 1 is characterized in that: The tunnel is provided with an air supply pipe extending along the length direction of the tunnel, and the ventilation device comprises: An air delivery pipe is arranged on the vehicle body and connected between the air delivery pipe and the safety cabin; The connecting assembly comprises a first joint arranged on the air supply pipe and a second joint arranged on the air delivery pipe, wherein the first joint and the second joint are detachably connected to realize the connection and disconnection of the air delivery pipe and the air supply pipe.

3. The tunnel cleaning operation environment monitoring and protection equipment according to claim 2 is characterized in that: The first joint has a first airflow cavity, the air inlet end of the first airflow cavity is connected to the air supply pipe, the air outlet end of the first airflow cavity is provided with a first plug suitable for blocking or opening the air outlet port, and the first plug is provided with a first reset member; A second push rod is formed on the second joint, and the second push rod is configured to push the first plug to open the air outlet port of the first airflow cavity after the first joint is connected and matched with the second joint; when the first joint is disengaged from the second joint, the first reset member drives the first plug to reset under the action of its own elastic force to block the air outlet port on the first airflow cavity.

4. The tunnel cleaning operation environment monitoring and protection equipment according to claim 2 or 3 is characterized in that: The second joint has a second airflow cavity, the air outlet end of the second airflow cavity is connected to the air delivery pipe, the air inlet end of the second airflow cavity is provided with a second plug suitable for blocking or opening the air inlet port, the second plug is provided with a second reset member, and the second reset member is connected to the elastic member; A first push rod is formed on the first joint, and the first push rod is suitable for pushing the second plug to open the air inlet port of the second air flow chamber after the first joint is connected and matched with the second joint; when the first joint is disengaged from the second joint, the second reset member drives the second plug to reset under the elastic force of the elastic member to block the air inlet port on the second air flow chamber.

5. The tunnel cleaning operation environment monitoring and protection equipment according to claim 2 is characterized in that: The air outlet end of the second joint is connected to the air inlet end of the air delivery pipe via a connecting hose.

6. The tunnel cleaning operation environment monitoring and protection equipment according to claim 2 or 5, characterized in that: The ventilation device also includes: The mobile driving mechanism is arranged on the vehicle body and is drivingly connected to the second joint. The mobile driving mechanism can drive and adjust the relative position of the second joint on the vehicle body to make the second joint plug into or disengage from the first joint.

7. The tunnel cleaning operation environment monitoring and protection equipment according to claim 2 or 5, characterized in that: There are multiple first connectors, which are arranged at intervals along the air supply pipe, and the second connector can be selectively connected to one of the multiple first connectors.

8. The tunnel cleaning operation environment monitoring and protection equipment according to claim 7 is characterized in that: The number of the second connectors is at least two; as the vehicle moves forward in the tunnel, the at least two second connectors are connected to the first connector alternately in sequence.

9. The tunnel cleaning operation environment monitoring and protection equipment according to any one of claims 1 to 3, characterized in that: The environmental monitoring device comprises: Monitoring module, used to detect environmental indicators of screening operations in tunnels; A lifting mechanism is fixed on the vehicle body and is drivingly connected to the monitoring module, and is used to drive the monitoring module to move up and down.

10. The tunnel cleaning operation environment monitoring and protection equipment according to claim 9 is characterized in that: The monitoring module comprises a gas sensor, a dust sensor and a temperature and humidity sensor installed on the lifting mechanism.

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