An air quality remote online monitoring device for tunnel construction

Abstract

The present invention relates to the field of air quality monitoring, and particularly to a remote on-line air quality monitoring device for tunnel construction, including a monitoring camera, a heat dissipation housing, a fan, a pressing plate, a baffle plate I, etc.; the monitoring camera is fixedly connected to the heat dissipation housing; a fan is fixedly connected inside the heat dissipation housing, and the fan is located between the monitoring camera and the air monitoring element; several baffle plates I are slidably connected to the lower side of the heat dissipation housing. In the present invention, the fan is used to form a way of entering from the air inlet and flowing out from the air outlet groove in the heat dissipation housing to dissipate heat from the monitoring camera, and by controlling the degree of the pressing plate moving to the left, the degree of the baffle plate I being pushed open is adjusted, and then the opening size of the air inlet is adjusted, so as to adjust the air intake volume of the heat dissipation housing, thereby optimizing the heat dissipation efficiency. When the heat dissipation requirement of the monitoring camera is small, the air intake volume of the air inlet is reduced, which can better prevent external dust and impurities from entering the heat dissipation housing and eroding the device.

Description

Technical Field

[0001] The present invention relates to the field of air quality monitoring, and in particular to a remote online air quality monitoring device for tunnel construction. Background Art

[0002] During tunnel construction, a large amount of dust and some toxic and harmful gases are usually generated, which will cause damage to the health of construction workers if inhaled. Therefore, it is necessary to monitor the air quality in the tunnel. During the air quality monitoring process, the dust in the air will enter the air quality monitoring device, causing a layer of dust to adhere to the air quality monitoring device. This layer of dust will hinder the air quality monitoring device, making it unable to contact the air normally, resulting in an impact on subsequent monitoring;

[0003] In the prior art, the tunnel environment is usually monitored by monitoring cameras, but the heat dissipation ports of existing monitoring cameras are not adjustable. Setting a small heat dissipation port usually cannot meet the heat dissipation requirements of the monitoring camera. Setting a large heat dissipation port makes it easier for external dust and impurities to enter the monitoring camera, causing erosion to the monitoring camera. Summary of the invention

[0004] In order to overcome the disadvantage that during the air quality monitoring process, dust in the air will enter the air quality monitoring device, causing a layer of dust to adhere to the air quality monitoring device, and this layer of dust will hinder the air quality monitoring device, making it impossible for the air quality monitoring device to contact with the air normally, resulting in an impact on subsequent monitoring, the present invention provides a remote online air quality monitoring device for tunnel construction.

[0005] The technical implementation scheme of the present invention is: a remote online monitoring device for air quality for tunnel construction, including a monitoring camera; also including a heat dissipation shell, a fan, an extrusion plate, a shielding plate I, a telescopic rod, a multi-stage electric push rod, an electromagnet and a push block; the monitoring camera is fixedly connected to the heat dissipation shell, and a temperature sensor is arranged in the heat dissipation shell, and an air monitoring element is arranged at the left end of the heat dissipation shell, a plurality of air inlets are arranged on the lower side of the heat dissipation shell, and a filter is arranged in each air inlet, an air outlet I is arranged on the left side of the heat dissipation shell, and a detection chamber is arranged on the left part of the heat dissipation shell, and The air monitoring element is located above the detection chamber; a fan is fixedly connected in the heat dissipation shell, and the fan is located between the monitoring camera and the air monitoring element; a plurality of shielding plates I are slidably connected to the lower side of the heat dissipation shell, and the positions of every two shielding plates I correspond to an air inlet; each shielding plate I is fixedly connected to a plurality of telescopic rods, and the other end of the telescopic rod is fixedly connected to the heat dissipation shell; a multi-stage electric push rod is fixedly connected to the lower side of the heat dissipation shell; an electromagnet is fixedly connected to the telescopic end of the multi-stage electric push rod; a pushing block is slidably connected to the heat dissipation shell, and the electromagnet is magnetically connected to the pushing block; an extrusion plate is fixedly connected to the pushing block.

[0006] Optionally, each shielding plate I is provided with two left-right symmetrical inclined blocks.

[0007] Optionally, the heat dissipation housing is provided with a plurality of air inlet passages, and each air inlet is located on an adjacent air inlet passage.

[0008] Optionally, it also includes a bidirectional electric push rod and a partition plate; the heat dissipation housing is fixedly connected to the bidirectional electric push rod; and both telescopic ends of the bidirectional electric push rod are fixedly connected to a partition plate.

[0009] Optionally, it also includes an electric drive push rod and a baffle plate II; a plurality of electric drive push rods are fixedly connected to the left side of the heat dissipation shell; the telescopic ends of all the electric drive push rods are commonly fixedly connected to the baffle plate II, and the baffle plate II is provided with an air outlet II, and the position of the air outlet II corresponds to the air outlet I, and the baffle plate II is slidably connected to the heat dissipation shell.

[0010] Optionally, the heat dissipation housing is provided with an air outlet groove, and the position of the air outlet groove corresponds to the partition plate; the partition plate is provided with a sealing portion, the left side of the partition plate is in contact with the air outlet groove, and the sealing portion is embedded in the air outlet groove.

[0011] Optionally, a rubber sealing pad is provided on the left side of the partition plate.

[0012] Optionally, the extrusion plate is configured to be hollow.

[0013] Optionally, it also includes a motor, a gear I, a winding wheel, a gear II, a fixed rod, a connecting tube I, a connecting tube II and a sleeve; a motor is fixedly connected to the heat dissipation shell; a plurality of gears I are rotatably connected to the heat dissipation shell; a fixed rod is fixedly connected to the heat dissipation shell; a plurality of sleeves are rotatably connected to the fixed rod; each sleeve is fixedly connected to a winding wheel; each sleeve is fixedly connected to a gear II, and gear II is meshed with gear I; each winding wheel is wound with a connecting tube II; the pushing block, winding wheel and fixed rod are all configured to be hollow, and the pushing block is provided with an air intake port, and a filter is provided in the air intake port; the pushing block is connected to the winding wheel through the connecting tube II; the winding wheel is connected to the fixed rod through the sleeve; the fixed rod is connected to the heat dissipation shell through the connecting tube I.

[0014] Optionally, a filter is provided in each air outlet hole I.

[0015] Compared with the prior art, the present invention has the following advantages: the present invention uses a fan to form a way of entering from the air inlet and flowing out from the air outlet in the heat dissipation housing to dissipate heat for the monitoring camera, and by controlling the degree of movement of the extrusion plate to the left, the degree of opening of the shielding plate I is regulated, and then the opening and closing size of the air inlet is regulated, thereby adjusting the air intake of the heat dissipation housing, thereby optimizing the heat dissipation efficiency, and when the heat dissipation demand of the monitoring camera is small, the air intake of the air inlet is reduced, which can better prevent external dust and impurities from entering the heat dissipation housing and causing erosion to the equipment;

[0016] The present invention is closed by a partition plate, and the air outlet II is misaligned with the air outlet I, so that the outside air cannot enter the detection chamber, and the gas residue in the detection chamber is avoided to affect the subsequent air detection results, and the outside dust is completely isolated from entering the detection chamber, so as to protect the air monitoring element; the present invention absorbs the air at the bottom of the tunnel by the push block, so as to monitor the air at the bottom of the tunnel, and avoids the problem that the present invention cannot absorb the air at the bottom of the lower position in the tunnel due to being installed and fixed at a high place in the tunnel, resulting in the inability to monitor the air at the bottom of the lower position in the tunnel;

[0017] The present invention drives the air to back-blow by reversing the fan, thereby blowing out the dust adhered to the filter screen in the air inlet, preventing the filter screen in the air inlet from being blocked by dust, resulting in the problem of failure in normal heat dissipation and air monitoring, and back-blows out the dust adhered to the filter screen in the air intake port, preventing the air intake port from being blocked by dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the remote online monitoring device for air quality used in tunnel construction of the present invention;

[0019] Figure 2 A cross-sectional view of a heat dissipation housing disclosed by the remote online monitoring device for air quality for tunnel construction of the present invention;

[0020] Figure 3 An exploded view of the remote online monitoring device for air quality used in tunnel construction disclosed by the present invention;

[0021] Figure 4 A schematic diagram of the combined structure of a bidirectional electric push rod and a partition plate disclosed in the remote online monitoring device for air quality for tunnel construction of the present invention;

[0022] Figure 5 It is a schematic diagram of the combined structure of the gear I, the winding wheel, the gear II and the connecting pipe II disclosed in the remote online monitoring device for air quality for tunnel construction of the present invention;

[0023] Figure 6 A cross-sectional view of a reel and a fixing rod disclosed in the remote online monitoring device for air quality for tunnel construction of the present invention;

[0024] Figure 7 A schematic diagram of the combined structure of the shielding plate I, the multi-stage electric push rod, the push block and the extrusion plate disclosed in the remote online monitoring device for air quality for tunnel construction of the present invention;

[0025] Figure 8 A cross-sectional view of a shielding plate I disclosed in the remote online monitoring device for air quality for tunnel construction of the present invention;

[0026] Fig. 9 A cross-sectional view of a push block disclosed in the remote online monitoring device for air quality for tunnel construction of the present invention.

[0027] The markings of the components in the accompanying drawings are as follows: 1-monitoring camera, 2-heat dissipation housing, 3-fan, 4-extrusion plate, 5-shielding plate I, 6-telescopic rod, 7-multi-stage electric push rod, 8-electromagnet, 9-pushing block, 101-bidirectional electric push rod, 102-partitioning plate, 111-electric drive push rod, 112-shielding plate II, 201-motor, 202-gear I, 203-winding wheel, 204-gear II, 205-fixing rod, 206-connecting pipe I, 207-connecting pipe II, 208-sleeve, 2001-air monitoring element, 2002-detection chamber, 2003-air inlet channel, 2004-air inlet, 2005-air outlet groove, 2006-air outlet hole I, 5001-tilting block, 9001-air inlet, 10201-sealing part, 11201-air outlet hole II. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0029] Example 1

[0030] A remote online monitoring device for air quality in tunnel construction, such as Figure 1-Figure 9 As shown, a monitoring camera 1 is included;

[0031] It also includes a heat dissipation shell 2, a fan 3, an extrusion plate 4, a baffle plate I 5, a telescopic rod 6, a multi-stage electric push rod 7, an electromagnet 8 and a push block 9; the monitoring camera 1 is fixedly connected to the heat dissipation shell 2, and a temperature sensor is arranged in the heat dissipation shell 2, and an air monitoring element 2001 is arranged at the left end of the heat dissipation shell 2, three air inlets 2004 are arranged on the lower side of the heat dissipation shell 2, and a filter is arranged in each air inlet 2004, an air outlet hole I 2006 is arranged on the left side of the heat dissipation shell 2, a detection chamber 2002 is arranged on the left part of the heat dissipation shell 2, and the air monitoring element 2001 is located above the detection chamber 2002; a fan 3 is fixedly connected to the heat dissipation shell 2, and the fan 3 is located between the monitoring camera 1 and The air monitoring element 2001 is provided between the air monitoring elements 2001; six rectangularly distributed shielding plates Ⅰ5 are slidably connected to the lower side of the heat dissipation shell 2, and the positions of every two shielding plates Ⅰ5 correspond to an air inlet 2004, and the air inlet 2004 is shielded by the shielding plates Ⅰ5; each shielding plate Ⅰ5 is fixedly connected to two telescopic rods 6, and the other end of the telescopic rods 6 is fixedly connected to the heat dissipation shell 2; a multi-stage electric push rod 7 is fixedly connected to the lower side of the heat dissipation shell 2; an electromagnet 8 is fixedly connected to the telescopic end of the multi-stage electric push rod 7; a pushing block 9 is slidably connected to the heat dissipation shell 2, and the electromagnet 8 is magnetically connected to the pushing block 9; the pushing block 9 is fixedly connected to the extrusion plate 4, and the shielding plates Ⅰ5 are squeezed by the extrusion plate 4, so that two adjacent shielding plates Ⅰ5 move back to back.

[0032] Each shielding plate Ⅰ5 is provided with two left-right symmetrical inclined blocks 5001.

[0033] The heat dissipation housing 2 is provided with three air inlet passages 2003 , and each air inlet 2004 is located on an adjacent air inlet passage 2003 .

[0034] It also includes a bidirectional electric push rod 101 and a partition plate 102; the heat dissipation shell 2 is fixedly connected to the bidirectional electric push rod 101; the two telescopic ends of the bidirectional electric push rod 101 are fixedly connected to a partition plate 102, and the opening and closing of the detection chamber 2002 is controlled by the opening and closing of the partition plate 102.

[0035] It also includes an electric drive push rod 111 and a shielding plate II112; two electric drive push rods 111 are fixedly connected to the left side of the heat dissipation shell 2; the telescopic ends of all the electric drive push rods 111 are commonly fixedly connected to the shielding plate II112, and the shielding plate II112 is provided with an air outlet II11201, and the position of the air outlet II11201 corresponds to the air outlet I2006, and the shielding plate II112 is slidably connected to the heat dissipation shell 2.

[0036] The heat dissipation housing 2 is provided with an air outlet groove 2005, and the position of the air outlet groove 2005 corresponds to the partition plate 102; the partition plate 102 is provided with a sealing portion 10201, the left side of the partition plate 102 is in contact with the air outlet groove 2005, and the sealing portion 10201 is embedded with the air outlet groove 2005.

[0037] A rubber sealing pad is provided on the left side of the partition plate 102 to enhance the sealing performance.

[0038] The extrusion plate 4 is configured to be hollow, so that when the extrusion plate 4 moves below the air inlet 2004 , it will not block the air from entering from the air inlet 2004 .

[0039] The heat dissipation housing 2 also includes a motor 201, a gear I 202, a winding wheel 203, a gear II 204, a fixed rod 205, a connecting pipe I 206, a connecting pipe II 207 and a sleeve 208; the heat dissipation housing 2 is fixedly connected with a motor 201; the heat dissipation housing 2 is rotatably connected with two gears I 202; the heat dissipation housing 2 is fixedly connected with a fixed rod 205; the fixed rod 205 is rotatably connected with two sleeves 208; each sleeve 208 is fixedly connected with a winding wheel 203; each sleeve 208 is fixedly connected with a gear II 20 4, and gear II 204 is meshed with gear I 202; each winding wheel 203 is wound with a connecting pipe II 207; the pushing block 9, the winding wheel 203 and the fixing rod 205 are all arranged to be hollow, and the pushing block 9 is provided with an air intake 9001, and a filter is arranged in the air intake 9001; the pushing block 9 is connected with the winding wheel 203 through the connecting pipe II 207; the winding wheel 203 is connected with the fixing rod 205 through the sleeve 208; the fixing rod 205 is connected with the heat dissipation shell 2 through the connecting pipe I 206.

[0040] The working steps of the above embodiment are: first, the staff installs the present invention at the position where the air quality monitoring is required in the tunnel, and then the staff can monitor the situation in the tunnel in real time through the monitoring camera 1, thereby observing the dust situation in the tunnel and performing online monitoring. When the dust is serious, in order to ensure the air quality in the tunnel, dust reduction work is performed in the tunnel according to demand.

[0041] In the initial state, the two partition plates 102 are closed, and the air outlet II 11201 is misaligned with the air outlet I 2006, and the two are not connected, so that the outside air cannot enter the detection chamber 2002, and the residual gas in the detection chamber 2002 is avoided to affect the subsequent air detection results, and the outside dust is completely isolated from entering the detection chamber 2002 to protect the air monitoring element 2001; during the normal operation of the monitoring camera 1, the fan 3 is controlled to start, and the multi-stage electric push rod 7 is controlled to pull the electromagnet 8 to move to the left. Since the electromagnet 8 is magnetically connected to the push block 9, the electromagnet 8 will drive the push block 9 and the extrusion plate 4 to move to the left. When the extrusion plate 4 moves to the left to contact with the rightmost baffle plate I 5, the extrusion plate 4 squeezes the inclined block 5001, so that the two adjacent baffle plates Ⅰ5 move away from each other, the telescopic rod 6 is compressed, the two adjacent baffle plates Ⅰ5 are no longer fitted, the rightmost air inlet 2004 is no longer blocked by the baffle plate Ⅰ5, and the multi-stage electric push rod 7 stops pulling the electromagnet 8 to move; then the fan 3 makes the air in the heat dissipation shell 2 flow, so that the air enters the rightmost air inlet 2004 from the rightmost air inlet 2004 into the rightmost air inlet channel 2003, and then flows into the heat dissipation shell 2, and flows toward the fan 3 in the heat dissipation shell 2; due to the gap between the right side of the partition plate 102 and the air outlet slot 2005, the air blown out by the fan 3 will go out from the air outlet slot 2005, forming a way of entering the heat dissipation shell 2 from the air inlet 2004 and flowing out from the air outlet slot 2005 to dissipate heat for the monitoring camera 1.

[0042] In the above process, by controlling the degree to which the multi-stage electric push rod 7 drives the electromagnet 8, the pushing block 9 and the extrusion plate 4 to move to the left, the degree of opening of the baffle plate Ⅰ5 can be regulated, and then the opening and closing size of the air inlet 2004 can be regulated. The air intake of the heat dissipation shell 2 can be adjusted in real time according to the working temperature of the monitoring camera 1 fed back by the temperature sensor, so as to optimize the heat dissipation efficiency. When the heat dissipation demand of the monitoring camera 1 is small, the air intake of the air inlet 2004 is reduced accordingly, which can better prevent external dust and impurities from entering the heat dissipation shell 2 and causing erosion to the equipment; and according to the different positions of the heating components inside the monitoring camera 1, the pushing block 9 can be controlled accordingly to drive the extrusion plate 4 to move between the corresponding two air inlets 2004, and at the same time, the corresponding four baffle plates Ⅰ5 can be opened, so as to dissipate heat for the heating components of the monitoring camera 1, and the heat dissipation effect is better.

[0043] When it is necessary to monitor the air quality in the tunnel, the bidirectional electric push rod 101 is controlled to push the two partition plates 102 to move in opposite directions, and at the same time, the electric drive push rod 111 pulls the shielding plate II 112 downward, and then when the sealing part 10201 is in contact with the air outlet groove 2005, the bidirectional electric push rod 101 stops pushing, and at the same time, the shielding plate II 112 will also move upward until the air outlet hole II 11201 is aligned with the air outlet hole I 2006, and the two are in a state of interconnection, and the electric drive push rod 111 stops pulling; because the sealing part 10201 is in contact with the air outlet groove 2005 at this time, the air cannot flow out of the air outlet groove 2005, and the outside air cannot enter the heat dissipation shell 2 from the air outlet groove 2005, so the fan 3 drives the air flow to flow out from the air outlet hole I 2006 and the air outlet hole II 11201, and the air flow path at this time will be adjusted to enter the detection chamber 2 from the air inlet 2004 and enter the detection chamber 2002 from the air outlet hole Ⅰ2006 flows out; after a period of time, the electric drive push rod 111 is controlled to pull the two partition plates 102 to move toward each other, and at the same time, the electric drive push rod 111 is controlled to push the shielding plate Ⅱ112 to move upward. When the two partition plates 102 contact each other, the bidirectional electric push rod 101 stops pulling and closes the right side of the detection chamber 2002. The partition plate 102 will not block the air outlet slot 2005, and the air will not be able to enter the detection chamber 2002 and flow out from the air outlet slot 2005. At the same time, the shielding plate Ⅱ112 will also move upward until the air outlet Ⅱ11201 and the air outlet Ⅰ2006 are misaligned, and the two are not connected. The bidirectional electric push rod 101 and the electric drive push rod 111 stop moving. At this time, the detection chamber 2002 is completely closed, thereby completing the sampling of the outside air, and then the gas composition in the detection chamber 2002 is analyzed by the air monitoring element 2001, thereby completing the monitoring of the air quality.

[0044] Since the density of some toxic and harmful gases is greater than that of air, these toxic and harmful gases will sink to the lower part of the tunnel, and the present invention is usually installed and fixed at the high place of the tunnel, so it cannot absorb the air at the lower part of the tunnel, resulting in the inability to monitor the air at the lower part of the tunnel; when it is necessary to monitor the air at the lower part of the tunnel, the multi-stage electric push rod 7 pushes the push block 9 to move to the right of the rightmost air inlet channel 2003, at this time all the air inlets 2004 will be blocked by the shielding plate Ⅰ5, and the push block 9 will no longer slide with the guide rail on the heat dissipation housing 2; then the bidirectional electric push rod 101 is controlled to push the partition plate 10 2 moves in opposite directions, and controls the electric drive push rod 111 to pull the shielding plate II 112 downward, so that the sealing part 10201 fits with the air outlet groove 2005, and the air outlet hole II 11201 is aligned with the air outlet hole I 2006, and then controls the electromagnet 8 to close, so that the electromagnet 8 no longer absorbs the push block 9. At this time, the push block 9 is only connected through the connecting pipe II 207, and then controls the motor 201 to drive the gear I 202 to rotate. Since the gear I 202 is meshed with the gear II 204, the gear II 204 is driven to rotate, and the gear II 204 drives the winding wheel 203 to rotate, so that the connecting pipe II 207 is unwound, and then the block 9 and the extrusion plate are pushed. 4 moves downward under the action of gravity. When the push block 9 moves downward to the bottom of the tunnel, the motor 201 stops rotating. Since all the air inlets 2004 are blocked by the shielding plate Ⅰ5, the air can only enter from the air inlet 9001 at this time, and enter the heat dissipation housing 2 after passing through the connecting pipe Ⅱ 207, the winding wheel 203, the sleeve 208, the fixing rod 205 and the connecting pipe Ⅰ 206, and then enter the detection chamber 2002 and flow out from the air outlet Ⅰ 2006. After the air flows for a period of time, the bidirectional electric push rod 101 is controlled to pull the partition plate 102 to move toward each other, and the electric drive push rod 111 is controlled to push the shielding plate Ⅱ 112 upward. Move so that the two partition plates 102 fit together, and the air outlet hole II 11201 is misaligned with the air outlet hole I 2006, so that the air cannot continue to enter the detection chamber 2002, and then be discharged from the air outlet groove 2005, and the air in the detection chamber 2002 cannot flow out, thereby completing the sampling of the air at the lower position in the tunnel, and then monitoring and analyzing the air components at the bottom of the tunnel through the air monitoring element 2001, and completing the monitoring of the air at the bottom of the tunnel; through the above-mentioned operation mode, it is avoided that the present invention cannot absorb the air at the lower position in the tunnel due to being installed and fixed at a high place in the tunnel, resulting in the problem that the air at the lower position in the tunnel cannot be monitored;After the monitoring is completed, the motor 201 is controlled to reverse, so as to reel the connecting pipe II 207, pull the push block 9 upward to reset, and then control the electromagnet 8 to start, so that the electromagnet 8 magnetically attracts the push block 9 again, and then control the multi-stage electric push rod 7 to pull the push block 9 and the extrusion plate 4 to move, squeeze the corresponding shielding plate I5 open, so that the air enters from the air inlet 2004 again, and the heat dissipation path is restored to the state of entering and exiting the air slot 2005 from the air inlet 2004. ;

[0045] In the above work, when the multi-stage electric push rod 7 is controlled to drive the push block 9 and the extrusion plate 4 to move, the motor 201 is synchronously controlled to drive the winding wheel 203 to adaptively wind and unwind the connecting tube II 207.

[0046] Example 2

[0047] On the basis of Example 1, Figure 2 As shown, a filter is provided in each air outlet Ⅰ2006.

[0048] The working steps of the above embodiment are: during the heat dissipation of the monitoring camera 1, the dust in the air will adhere to the filter screen in the air inlet 2004. When the dust adheres more, the filter screen in the air inlet 2004 will be blocked, so that air cannot enter from the air inlet 2004, resulting in failure to perform heat dissipation and air monitoring normally; therefore, the two-way electric push rod 101 is regularly controlled to push the partition plate 102 to move in opposite directions, and the electric drive push rod 111 is controlled to pull the shielding plate II 112 to move downward, so that the sealing portion 10201 is in contact with the air outlet groove 2005, and the air outlet hole II 11201 is aligned with the air outlet hole I 2006, the two-way electric push rod 101 and the electric drive push rod 111 stop running, and then the fan 3 is controlled to reverse, so that the air starts to enter from the air outlet hole I 2006, and then flows to the fan 3, and then the fan 3 blows air toward the right end of the heat dissipation shell 2, and then the multi-stage electric push rod 7 is controlled to pull and push The block 9 and the extrusion plate 4 move, and the extrusion plate 4 sequentially squeezes the corresponding shielding plate I5 from right to left, so that the shielding plate I5 no longer blocks the air inlet 2004, and the air inlet 9001 will fit with the air inlet channel 2003 at this time, so that the air inlet 9001 is blocked by the air inlet channel 2003, and the air cannot flow out of the air inlet 9001. Therefore, the fan 3 blows out the air to flow out of the air inlet 2004, so that the heat dissipation shell 2 forms a heat dissipation hole I2 in the heat dissipation shell 2. The airflow entering through the air inlet 2006 and exiting through the air inlet 2004 passes through the filter in the air outlet hole Ⅰ2006 to filter the dust in the air, preventing the dust from flowing directly from the air outlet hole Ⅰ2006 into the detection chamber 2002. In this way, the filter in the air inlet 2004 is back-blown to blow out the dust adhering to the filter in the air inlet 2004, preventing the dust from clogging the filter in the air inlet 2004 and causing problems with normal heat dissipation and air monitoring.

[0049] Then, after the extrusion plate 4 has finished back-blowing and cleaning the filters in all the air inlets 2004, the multi-stage electric push rod 7 is controlled to push the push block 9 and the extrusion plate 4 to move to the right of the rightmost air inlet channel 2003, and the electromagnet 8 is powered off, and then the motor 201 is controlled to drive the winding wheel 203 to rotate, so that the push block 9 and the extrusion plate 4 move downward for a distance. When the push block 9 is no longer in contact with the heat dissipation shell 2, the air inlet 9001 is no longer blocked by the heat dissipation shell 2, so that air can flow out of the air inlet 9001, and the motor 201 stops rotating. At this time, all the air inlets 2004 are The baffle plate Ⅰ5 blocks the air from flowing out from the air inlet 2004. Therefore, the air at this time enters from the air outlet Ⅰ2006 and exits from the air intake 9001, thereby blowing out the dust adhering to the filter screen in the air intake 9001 to prevent the air intake 9001 from being blocked by dust. Then, the motor 201 is controlled to drive the winding wheel 203 to rotate, pulling the push block 9 and the extrusion plate 4 to move upward and reset, and re-energizing the electromagnet 8 to absorb the push block 9. After the reset is completed, the push block 9 and the extrusion plate 4 are controlled to move to the left, and the fan 3 is controlled to rotate forward, thereby continuing the heat dissipation work for the monitoring camera 1.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A remote online monitoring device for air quality in tunnel construction, comprising a monitoring camera (1); wherein: It also comprises a heat dissipation housing (2), a fan (3), an extrusion plate (4), a shielding plate I (5), a telescopic rod (6), a multi-stage electric push rod (7), an electromagnet (8) and a push block (9); the monitoring camera (1) is fixedly connected to the heat dissipation housing (2), a temperature sensor is arranged in the heat dissipation housing (2), an air monitoring element (2001) is arranged at the left end of the heat dissipation housing (2), a plurality of air inlets (2004) are arranged at the lower side of the heat dissipation housing (2), and a filter is arranged in each air inlet (2004), an air outlet I (2006) is arranged on the left side of the heat dissipation housing (2), a detection chamber (2002) is arranged at the left part of the heat dissipation housing (2), and the air monitoring element (2001) is located above the detection chamber (2002); A fan (3) is fixedly connected inside the heat dissipation housing (2), and the fan (3) is located between the monitoring camera (1) and the air monitoring element (2001); a plurality of shielding plates I (5) are slidably connected to the lower side of the heat dissipation housing (2), and the position of each two shielding plates I (5) corresponds to an air inlet (2004); each shielding plate I (5) is fixedly connected to a plurality of telescopic rods (6), and the other end of the telescopic rod (6) is fixedly connected to the heat dissipation housing (2); a multi-stage electric push rod (7) is fixedly connected to the lower side of the heat dissipation housing (2); an electromagnet (8) is fixedly connected to the telescopic end of the multi-stage electric push rod (7); a push block (9) is slidably connected to the heat dissipation housing (2), and the electromagnet (8) is magnetically connected to the push block (9); the push block (9) is fixedly connected to an extrusion plate (4); It also includes a bidirectional electric push rod (101) and a partition plate (102); the heat dissipation housing (2) is fixedly connected to the bidirectional electric push rod (101); and both telescopic ends of the bidirectional electric push rod (101) are fixedly connected to a partition plate (102); It also includes an electric drive push rod (111) and a shielding plate II (112); a plurality of electric drive push rods (111) are fixedly connected to the left side of the heat dissipation housing (2); the telescopic ends of all the electric drive push rods (111) are commonly fixedly connected to the shielding plate II (112), and the shielding plate II (112) is provided with an air outlet II (11201), and the position of the air outlet II (11201) corresponds to the air outlet I (2006), and the shielding plate II (112) is slidably connected to the heat dissipation housing (2); The heat dissipation housing (2) is provided with an air outlet groove (2005), and the position of the air outlet groove (2005) corresponds to the partition plate (102); the partition plate (102) is provided with a sealing portion (10201), the left side of the partition plate (102) is in contact with the air outlet groove (2005), and the sealing portion (10201) is embedded in the air outlet groove (2005).

2. The remote online monitoring device for air quality for tunnel construction according to claim 1 is characterized in that: Each shielding plate I (5) is provided with two left-right symmetrical inclined blocks (5001).

3. The remote online monitoring device for air quality for tunnel construction according to claim 2 is characterized in that: The heat dissipation housing (2) is provided with a plurality of air inlet channels (2003), and each air inlet (2004) is located on an adjacent air inlet channel (2003).

4. The remote online monitoring device for air quality for tunnel construction according to claim 3 is characterized by: A rubber sealing pad is provided on the left side of the partition plate (102).

5. The remote online monitoring device for air quality for tunnel construction according to claim 4 is characterized by: The extrusion plate (4) is configured to be hollow.

6. A remote online monitoring device for air quality for tunnel construction according to any one of claims 4-5, characterized in that: The heat dissipation device also comprises a motor (201), a gear I (202), a winding wheel (203), a gear II (204), a fixing rod (205), a connecting pipe I (206), a connecting pipe II (207) and a sleeve (208); the motor (201) is fixedly connected to the heat dissipation housing (2); the heat dissipation housing (2) is rotatably connected to a plurality of gears I (202); the heat dissipation housing (2) is fixedly connected to the fixing rod (205); the fixing rod (205) is rotatably connected to a plurality of sleeves (208); each sleeve (208) is fixedly connected to a winding wheel (203); each sleeve (208) is fixedly connected to a gear II (2 04), and the gear II (204) is meshed with the gear I (202); each winding wheel (203) is wound with a connecting pipe II (207); the pushing block (9), the winding wheel (203) and the fixed rod (205) are all arranged to be hollow, and the pushing block (9) is provided with an air intake (9001), and a filter is arranged in the air intake (9001); the pushing block (9) is connected to the winding wheel (203) through the connecting pipe II (207); the winding wheel (203) is connected to the fixed rod (205) through the sleeve (208); and the fixed rod (205) is connected to the heat dissipation housing (2) through the connecting pipe I (206).

7. The remote online monitoring device for air quality for tunnel construction according to claim 6 is characterized by: A filter is provided in each air outlet Ⅰ (2006).

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