Constructional engineering site environment quality monitoring equipment

Abstract

The invention discloses construction engineering site environment quality monitoring equipment, and relates to the technical field of environment quality monitoring, a limiting assembly for driving an adjusting frame to longitudinally and slidably install is arranged between the adjusting frame and a supporting frame, the adjusting frame drives a telescopic mechanism to adjust the height of a monitoring mechanism, and a monitoring box is rotatably installed on a supporting plate at the top of the telescopic mechanism; the right-angle frame is transversely installed in the monitoring box in a sliding mode, the feeding mechanism automatically installs the filter screen between an air inlet in the monitoring box and an air extraction opening of the air extractor, when the air extractor extracts air, particles in the air are attached to the filter screen, and the right-angle frame in the monitoring box is in contact fit with the filter screen at the air inlet. And the filter screen after particle collection is sealed in the sealing mechanism on the dismounting groove by the right-angle frame. The device has the beneficial effects that the quality of environments at different heights is monitored, the type and proportion of particles in the air are conveniently analyzed, and countermeasures are accurately taken.

Description

Technical Field

[0001] This invention relates to the field of environmental quality monitoring technology, and in particular to an on-site environmental quality monitoring device for construction projects. Background Technology

[0002] During the construction, renovation, and expansion of buildings and municipal facilities, the diversification of construction materials leads to an increase in the types, concentrations, and quantities of particulate matter and dust in the air. This poses a significant threat to the health and safety of construction workers on-site. Monitoring the environmental quality at construction sites can promptly identify safety hazards and allow for appropriate measures to ensure the safe progress of construction.

[0003] While existing technologies mostly employ various sensors to monitor environmental changes in real time, they cannot detect the concentration of airborne particles in large spaces, nor can they conduct single-variable experiments on air quality at different heights at the same location, affecting the accuracy of monitoring results. Most importantly, they cannot perform subsequent analysis on the types of airborne particles, thus affecting the implementation of countermeasures. Therefore, there is an urgent need for an on-site environmental quality monitoring device for construction projects. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention adopts the following technical solution: a construction site environmental quality monitoring device, comprising a support mechanism and a monitoring mechanism. The support mechanism includes a base plate and a support frame, with the base plate and support frame fixedly installed together. An adjusting frame is longitudinally slidably installed inside the support frame. A limiting component for driving the longitudinal sliding installation of the adjusting frame is provided between the adjusting frame and the support frame. A telescopic mechanism is provided between the monitoring mechanism and the adjusting frame, and the adjusting frame drives the telescopic mechanism to adjust the height of the monitoring mechanism. The monitoring mechanism includes a monitoring box and a right-angle frame. The monitoring box is rotatably installed on a support plate on top of the telescopic mechanism. The right-angle frame is laterally slidably installed inside the monitoring box. A feeding mechanism and an air extractor are provided inside the monitoring box. The feeding mechanism automatically installs a filter screen between the air inlet on the monitoring box and the air extraction port of the air extractor. When the air extractor draws in air, particles in the air adhere to the filter screen. The right-angle frame inside the monitoring box contacts and engages with the filter screen at the air inlet. A sealing mechanism is detachably provided on the disassembly slot of the monitoring box, and the right-angle frame seals the filter screen after collecting particles into the sealing mechanism.

[0005] Furthermore, there are two sets of limiting components, symmetrically arranged on both sides of the support frame. Rectangular frames are symmetrically arranged on both sides of the support frame. Each limiting component includes a worm gear and a worm wheel. The worm gear is rotatably mounted inside the rectangular frame, and the worm wheel is rotatably mounted on the support frame. The worm gear and worm wheel mesh and drive each other. Two sets of racks that mesh and drive the worm wheel are symmetrically fixed on the caster wheels. Rotating the worm gear drives the worm wheel to rotate, which in turn drives the racks to move longitudinally. The racks then drive the adjusting frame to move longitudinally within the support frame.

[0006] Furthermore, the telescopic mechanism includes two pairs of rockers and multiple sets of telescopic components. The ends of the two pairs of rockers are symmetrically mounted on the protruding columns of the support frame. Each set of telescopic components has two X-shaped frames symmetrically arranged on both sides of the support frame. Each X-shaped frame consists of a main three-hole connecting rod and a secondary three-hole connecting rod rotatably mounted in the middle. A column shaft is rotatably mounted in the middle of the main and secondary three-hole connecting rods. The two X-shaped frames of the first set of telescopic components correspond to the two pairs of rockers. The ends of the main and secondary three-hole connecting rods of the first set of telescopic components are rotatably connected to the tails of the rockers. The column shaft of the first set of telescopic components is rotatably mounted on the adjusting frame. The limiting component drives the adjusting frame to slide longitudinally within the support frame, adjusting the relative position between the adjusting frame and the support frame, changing the axial distance between the column shaft and the protruding column of the first set of telescopic components, thereby changing the included angle between each pair of rockers.

[0007] Furthermore, the multiple sets of telescopic components are arranged in sequence, with adjacent sets of telescopic components rotatably mounted. The end of the main three-hole connecting rod of one set of telescopic components is rotatably mounted to the tail of the secondary three-hole connecting rod of another set of telescopic components, and the end of the secondary three-hole connecting rod is rotatably mounted to the tail of the main three-hole connecting rod of another set of telescopic components. A connecting shaft is rotatably connected at the rotatable connection point of adjacent sets of telescopic components. The connecting shaft supports the X-shaped frame of the adjacent sets of telescopic components, improving the stability between the X-shaped frames.

[0008] Furthermore, two pairs of pin seats are symmetrically slidably installed on the bottom of the support plate. These two pairs of pin seats correspond to the two X-shaped frames of the last telescopic assembly. The pin seats are rotatably installed on the tail of the main three-hole connecting rod and the trailing three-hole connecting rod of the X-shaped frame of the last telescopic assembly. The adjusting frame drives the angle between the main three-hole connecting rod and the trailing three-hole connecting rod of the multiple telescopic assemblies to change, causing the pin seats to slide on the bottom of the support plate, thus changing the height of the support plate.

[0009] Furthermore, the sealing mechanism includes a sealing base plate and a sealing support plate. Sealing slide rods are respectively provided at the four corners of the sealing support plate. The sealing support plate is slidably mounted on the sealing base plate via the sealing slide rods. A sealing spring is provided between the bottom of the sealing slide rod and the sealing base plate, and the sealing spring is slidably mounted on the sealing slide rod. A chamfered surface is provided on the same side of the sealing support plate and the sealing base plate. A disassembly block is provided on the sealing base plate, and the disassembly block is slidably mounted on the disassembly groove of the monitoring box. A disassembly frame is provided on the monitoring box adjacent to the disassembly groove. The length and width of the disassembly frame are equal to those of the sealing base plate and the sealing support plate. A T-shaped pin is longitudinally provided on the pin groove of the monitoring box, and the T-shaped pin contacts and engages with the disassembly block. Insert the sealing mechanism into the disassembly frame. The disassembly frame contacts the sealing base plate and the sealing support plate. Slide the T-pin upwards to slide the disassembly block of the sealing base plate into the disassembly groove until the disassembly block is completely slid into the disassembly groove. Disconnect the force applied to the T-pin. Under the action of gravity, the T-pin moves downwards and contacts the disassembly block. The T-pin restricts the disassembly block in the disassembly groove, thereby restricting the position of the sealing mechanism. Install the sealing mechanism on the monitoring box.

[0010] Furthermore, the feeding mechanism includes a feeding box and a push plate. The feeding box is fixedly installed inside the monitoring box, and the push plate is slidably installed inside the feeding box. A feeding spring is provided between the feeding box and the push plate. The filter screen is slidably installed inside the feeding box. A feeding port is provided at the bottom of the feeding box near the monitoring box. The bottom of the filter screen at the air inlet contacts and cooperates with the strip support inside the monitoring box. A sensor is installed on the strip support, and the sensor is electrically connected to the spray box inside the monitoring box. Under the elastic action of the feeding spring, the push plate pushes the filter screen to the feeding port. The filter screen falls from the feeding port. When the air extractor draws air, the air passes through the filter screen at the air inlet. The filter screen collects particles in the air. The sensor controls the spray intensity of the spray box based on the change in the weight of the filter screen on the strip support.

[0011] Furthermore, the vertical frame of the right-angle frame is provided with a chamfered groove, and chamfered blocks are symmetrically arranged on both sides of the filter screen. The chamfered block of the filter screen at the air inlet contacts and cooperates with the chamfered groove of the right-angle frame. The chamfered block contacts and cooperates with the chamfered surface of the sealing mechanism. The horizontal frame of the right-angle frame contacts and cooperates with the bottom of the filter screen at the feeding port. A return spring is provided between the right-angle frame and the monitoring box. The return spring is located inside the rectangular rail of the monitoring box. After the filter screen at the air inlet finishes collecting particles, push the handle of the right-angle frame. The handle slides on the rectangular rail of the monitoring box, compressing the return spring. The vertical frame of the right-angle frame pushes the filter screen at the air inlet toward the chamfered surface of the sealing mechanism. The horizontal frame of the right-angle frame contacts the bottom of the filter screen at the feed port to prevent the filter screen at the feed port from falling. The chamfered block of the filter screen collecting particles pushes the chamfered surface of the sealing mechanism, causing the sealing slide rod of the sealing support plate to slide on the sealing base plate. The sealing spring is compressed until the filter screen collecting particles is completely inserted between the sealing base plate and the sealing support plate. The sealing base plate and the sealing support plate seal the filter screen collecting particles. Disconnect the force applied to the handle of the right-angle frame. Under the elastic action of the return spring, the right-angle frame returns to its initial position. The horizontal frame of the right-angle frame disconnects from the filter screen at the feed port. The filter screen at the feed port falls into the air inlet. At this time, the chamfered block of the filter screen in the chamfered groove on the vertical frame of the right-angle frame and the bottom of the filter screen contact the strip support.

[0012] The beneficial effects of this invention compared with the prior art are: (1) This invention is equipped with a limiting component and a telescopic mechanism. The limiting component drives the telescopic mechanism to extend and retract, changing the height of the monitoring mechanism and monitoring the environmental quality at different heights. At the same time, the meshing of the worm and the worm wheel limits the position of the adjusting frame, thereby ensuring the stability of the height of the monitoring mechanism; (2) This invention is equipped with a monitoring mechanism. The right-angle frame and the feeding mechanism complete the automatic feeding of the filter screen, which has a high degree of automation; (3) This invention is equipped with a spraying mechanism. The sensor on the strip support judges the environmental quality according to the change of the gravity of the filter screen, adjusts the spraying degree, and adsorbs particles in the air, saving resources; (4) This invention is equipped with a sealing mechanism. The right-angle frame helps push the filter screen that collects particles into the sealing mechanism, and seals and preserves the sample on the filter screen, which is convenient for later analysis of the types and proportions of particles in the air, more effectively monitors the environmental quality, and facilitates accurate countermeasures. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective.

[0014] Figure 2 This is the front view of the present invention.

[0015] Figure 3 This is the left view of the present invention.

[0016] Figure 4 for Figure 2 Cross-sectional view along the AA direction.

[0017] Figure 5 for Figure 2 Cross-sectional view along the BB direction.

[0018] Figure 6 for Figure 3 Cross-sectional view along the CC direction.

[0019] Figure 7 This is a schematic diagram of the sealing structure of the present invention from a first perspective.

[0020] Figure 8 for Figure 3 A magnified view of part D in the middle.

[0021] Figure 9 for Figure 6 A magnified view of part E in the middle.

[0022] Figure 10 for Figure 4 A magnified view of part F in the middle section.

[0023] Figure 11 for Figure 1 A magnified view of part G in the middle.

[0024] Figure 12 for Figure 2 A magnified view of part H in the middle.

[0025] Figure 13 for Figure 5 A magnified view of part I in the middle.

[0026] Reference numerals: 11-Base plate; 12-Wheel caster; 13-Support frame; 14-Adjusting frame; 15-Limit assembly; 131-Protruding column; 132-Rectangular frame; 151-Worm gear; 152-Worm wheel; 153-Rack; 1511-Eccentric disc; 21-Rock arm; 22-X-type frame; 23-Support plate; 24-Pin seat; 25-Column shaft; 26-Connecting shaft; 221-Main three-hole connecting rod; 222-Slave three-hole connecting rod; 31-Monitoring box; 32-T-type 33-Right-angle bracket; 34-Reset spring; 311-Disassembly frame; 312-Pin groove; 313-Rectangular rail; 314-Disassembly groove; 315-Strip bracket; 4-Filter screen; 41-Chamfered block; 51-Sealing base plate; 52-Sealing support plate; 53-Sealing spring; 521-Sealing slide bar; 511-Disassembly block; 61-Feeding box; 62-Push plate; 63-Feeding spring; 7-Spray box; 71-Spray head; 8-Evaporator; 331-Handle. Detailed Implementation

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example: Figures 1-13 The environmental quality monitoring equipment for construction sites shown includes a support mechanism and a monitoring mechanism. The support mechanism includes a base plate 11 and a support frame 13, with the base plate 11 and the support frame 13 fixedly installed together. An adjusting frame 14 is longitudinally slidably installed inside the support frame 13. A limiting component 15 for driving the longitudinal sliding installation of the adjusting frame 14 is provided between the adjusting frame 14 and the support frame 13. A telescopic mechanism is provided between the monitoring mechanism and the adjusting frame 14, and the adjusting frame 14 drives the telescopic mechanism to adjust the height of the monitoring mechanism. The monitoring mechanism includes a monitoring box 31 and a right-angle frame 33. The monitoring box 31 is rotatably mounted... The right-angle frame 33 is horizontally slidably installed inside the monitoring box 31 on the support plate 23 at the top of the telescopic mechanism. The monitoring box 31 is equipped with a feeding mechanism and an air extractor 8. The feeding mechanism automatically installs the filter screen 4 between the air inlet on the monitoring box 31 and the air extraction port of the air extractor 8. When the air extractor 8 extracts air, the particles in the air adhere to the filter screen 4. The right-angle frame 33 inside the monitoring box 31 contacts and cooperates with the filter screen 4 at the air inlet. The disassembly slot 314 of the monitoring box 31 is detachably equipped with a sealing mechanism. The right-angle frame 33 seals the filter screen 4 after collecting particles into the sealing mechanism.

[0029] like Figure 1 , Figure 3 , Figure 8 As shown, the support mechanism includes a base plate 11, casters 12, a support frame 13, an adjusting frame 14, and limiting components 15. The base plate 11 is fixedly installed between the base plate 11 and the support frame 13. Four sets of casters 12 are rotatably installed below the base plate 11, and the base plate 11 moves when the four sets of casters 12 rotate. The adjusting frame 14 is longitudinally slidably installed inside the support frame 13. The support frame 13 is symmetrically provided with protruding columns 131 and rectangular frames 132. Two sets of limiting components 15 are symmetrically arranged between the adjusting frame 14 and the support frame 13. The limiting components 15 include a worm gear 151 and a worm wheel 152. The worm gear 151 rotates... The worm gear 151 is rotatably installed inside the rectangular frame 132. An eccentric disk 1511 is provided at the bottom of the worm gear 151. The worm wheel 152 is rotatably installed on the support frame 13. The worm gear 151 and the worm wheel 152 mesh and drive each other. Two sets of racks 153 are symmetrically fixed on the casters 12. One set of worm wheels 152 corresponds to one set of racks 153. The racks 153 and the worm wheels 152 mesh and drive each other. When the eccentric disk 1511 on the worm gear 151 is rotated, the worm gear 151 drives the worm wheel 152 to rotate. The worm wheel 152 drives the rack 153 to move longitudinally. The rack 153 drives the adjusting frame 14 to move longitudinally inside the support frame 13.

[0030] like Figure 1 , Figure 2As shown, the telescopic mechanism includes two pairs of rocker arms 21, multiple sets of telescopic components, a support plate 23, and a pin seat 24. The ends of the two pairs of rocker arms 21 are symmetrically mounted on the protruding columns 131 of the support frame 13. Each set of telescopic components includes two X-shaped frames 22, which are symmetrically arranged on both sides of the support frame 13. The X-shaped frame 22 consists of a main three-hole connecting rod 221 and a secondary three-hole connecting rod 222 rotatably mounted in the middle. A column shaft 25 is rotatably mounted in the middle of the main three-hole connecting rod 221 and the secondary three-hole connecting rod 222. The two X-shaped frames 22 of the first set of telescopic components are... Corresponding to the two pairs of rockers 21, the ends of the main three-hole connecting rod 221 and the secondary three-hole connecting rod 222 of the first set of telescopic components are rotatably connected to the tail of the rocker 21. The column shaft 25 of the first set of telescopic components is rotatably mounted on the adjusting frame 14. The limiting component 15 drives the adjusting frame 14 to slide longitudinally inside the support frame 13, adjusting the relative position between the adjusting frame 14 and the support frame 13. The adjusting frame 14 drives the column shaft 25 of the first set of telescopic components to move, changing the axial distance between the column shaft 25 of the first set of telescopic components and the protruding column 131, thereby changing the included angle between each pair of rockers 21.

[0031] like Figure 1 , Figure 2 As shown, multiple sets of telescopic components are arranged in sequence, with adjacent sets of telescopic components rotatably mounted. The end of the main three-hole connecting rod 221 of one set of telescopic components is rotatably mounted to the tail of the auxiliary three-hole connecting rod 222 of another set of telescopic components, and the end of the auxiliary three-hole connecting rod 222 is rotatably mounted to the tail of the main three-hole connecting rod 221 of another set of telescopic components. A connecting shaft 26 is rotatably connected at the rotatable connection point of adjacent sets of telescopic components. The connecting shaft 26 supports the X-shaped frame 22 of the adjacent sets of telescopic components, raising the X-shaped frame 22. The stability between them; two pairs of pin seats 24 are symmetrically slidably installed at the bottom of the support plate 23. The two pairs of pin seats 24 correspond to the two X-shaped frames 22 of the last set of telescopic components. The pin seats 24 are rotatably installed at the tail of the main three-hole connecting rod 221 and the trailing three-hole connecting rod 222 of the X-shaped frame 22 of the last set of telescopic components. The adjusting frame 14 drives the angle between the main three-hole connecting rod 221 and the trailing three-hole connecting rod 222 of the multiple sets of telescopic components to change, thereby causing the pin seats 24 to slide at the bottom of the support plate 23 and changing the height of the support plate 23.

[0032] like Figure 1 , Figure 5 , Figure 7 , Figure 11 , Figure 13As shown, a monitoring box 31 of the monitoring mechanism is rotatably mounted on the support plate 23 at the top of the telescopic mechanism. The sealing mechanism is detachably mounted on the disassembly groove 314 of the monitoring box 31. The sealing mechanism includes a sealing base plate 51, a sealing support plate 52, and a sealing spring 53. Sealing slide rods 521 are respectively provided on the four corners of the sealing support plate 52. The sealing support plate 52 is slidably mounted on the sealing base plate 51 through the sealing slide rods 521. The sealing spring 53 is located between the bottom of the sealing slide rod 521 and the sealing base plate 51. The sealing spring 53 is slidably mounted on the sealing slide rod 521. The sealing support plate 52 and the sealing base plate 51 have chamfered surfaces on the same side. A disassembly block 511 is provided on the sealing base plate 51. The disassembly block 511 is slidably mounted on the disassembly groove 314 of the monitoring box 31. A sealing mechanism is provided on the monitoring box 31 adjacent to the disassembly groove 314. The system includes a disassembly frame 311, which has the same length and width as the sealing base plate 51 and the sealing support plate 52. A T-shaped pin 32 is longitudinally arranged on the pin groove 312 of the monitoring box 31, and the T-shaped pin 32 contacts and engages with the disassembly block 511. The sealing mechanism is then inserted into the disassembly frame 311, which contacts the sealing base plate 51 and the sealing support plate 52. The T-shaped pin 32 is slid upwards, causing the disassembly block 511 of the sealing base plate 51 to slide into the disassembly groove 314 until it is fully inserted. The force applied to the T-shaped pin 32 is then released, and under gravity, the T-shaped pin 32 moves downwards, contacting and engaging with the disassembly block 511. The T-shaped pin 32 confines the disassembly block 511 within the disassembly groove 314, thus limiting the position of the sealing mechanism. The sealing mechanism is then installed on the monitoring box 31.

[0033] like Figure 2 , Figure 3 , Figure 4 , Figure 10 , Figure 8As shown, the feeding mechanism and the vacuum pump 8 are located inside the monitoring box 31. The feeding mechanism installs the filter screen 4 between the air inlet on the monitoring box 31 and the air outlet of the vacuum pump 8. The feeding mechanism includes a feeding box 61, a push plate 62, and a feeding spring 63. The feeding box 61 is fixedly installed inside the monitoring box 31, the push plate 62 is slidably installed inside the feeding box 61, and the feeding spring 63 is located between the feeding box 61 and the push plate 62. The filter screen 4 is slidably installed inside the feeding box 61. A feeding port is provided at the bottom of the feeding box 61 near the monitoring box 31. The bottom of the filter screen 4 at the air inlet contacts and cooperates with the strip bracket 315 inside the monitoring box 31. A sensor is installed on the strip bracket 315, and the sensor is electrically connected to the spray box 7 inside the monitoring box 31. Under the elastic action of the feeding spring 63, the push plate 62 pushes the filter screen 4 to the feeding port. The filter screen 4 falls from the feeding port and lands on the strip bracket 315, between the air inlet on the monitoring box 31 and the air extraction port of the vacuum pump 8. When the vacuum pump 8 extracts air, the air passes through the filter screen 4 at the air inlet. The filter screen 4 collects particles in the air. The sensor controls the spraying degree of the spray box 7 according to the change in the weight of the filter screen 4 on the strip bracket 315. The spray box 7 is equipped with a nozzle 71, and the spray liquid is sprayed out from the nozzle 71.

[0034] like Figure 1 , Figure 2 , Figure 5 , Figure 9 , Figure 11 , Figure 12As shown, the monitoring mechanism includes a monitoring box 31, a T-pin 32, a right-angle bracket 33, and a return spring 34. The monitoring box 31 is rotatably mounted on the support plate 23 at the top of the telescopic mechanism. A power source is provided between the monitoring box 31 and the support plate 23, driving the monitoring box 31 to rotate on the support plate 23. The right-angle bracket 33 is laterally slidably mounted inside the monitoring box 31. A chamfered groove is provided on the vertical frame of the right-angle bracket 33. Chamfered blocks 41 are symmetrically arranged on both sides of the filter screen 4. The chamfered blocks of the filter screen 4 at the air inlet... 41 engages with the chamfered groove of the right-angle frame 33, and the chamfered block 41 engages with the chamfered surface of the sealing mechanism. The crossbar of the right-angle frame 33 engages with the bottom of the filter screen 4 at the feed inlet. The return spring 34 is located between the right-angle frame 33 and the monitoring box 31, and is located inside the rectangular rail 313 of the monitoring box 31. After the filter screen 4 at the air inlet has finished collecting particles, it pushes the handle 331 of the right-angle frame 33. The handle 331 slides on the rectangular rail 313 of the monitoring box 31, and the return spring... When spring 34 is compressed, the vertical frame of right-angle bracket 33 pushes the filter screen 4 at the air inlet toward the chamfered surface of the sealing mechanism. The horizontal frame of right-angle bracket 33 contacts and engages with the bottom of the filter screen 4 at the feed inlet to prevent the filter screen 4 at the feed inlet from falling. The chamfered block 41 of the filter screen 4 collecting particles pushes the chamfered surface of the sealing mechanism, causing the sealing slide rod 521 of the sealing support plate 52 to slide on the sealing base plate 51. The sealing spring 53 is compressed until the filter screen 4 collecting particles is completely inserted into the sealing base plate 51 and seals. Between the support plates 52, the sealing base plate 51 and the sealing support plate 52 seal the filter screen 4 that collects particles, disconnecting the force applied to the handle 331 of the right-angle frame 33. Under the elastic action of the return spring 34, the right-angle frame 33 returns to its initial position, the horizontal frame of the right-angle frame 33 disconnects from the filter screen 4 at the feed port, and the filter screen 4 at the feed port falls at the air inlet. At this time, the chamfered block 41 of the filter screen 4 in the chamfered groove on the vertical frame of the right-angle frame 33 and the bottom of the filter screen 4 contact and cooperate with the strip bracket 315.

[0035] Working principle: Push the base plate 11 to the target monitoring position, adjust the height of the monitoring box 31 as needed, and monitor the environmental quality at different heights; this can form a single-variable experiment, improving the accuracy of monitoring. Insert the sealing mechanism into the disassembly frame 311, with the disassembly frame 311 contacting the sealing base plate 51 and the sealing support plate 52. Slide the T-pin 32 upwards to slide the disassembly block 511 of the sealing base plate 51 into the disassembly groove 314 until the disassembly block 511 is completely slid into the disassembly groove 314, thus disconnecting the T-pin. The force applied by pin 32 causes T-pin 32 to move downward under the action of gravity. T-pin 32 contacts and engages with disassembly block 511, and T-pin 32 restricts disassembly block 511 in disassembly groove 314, thereby restricting the position of sealing mechanism and installing sealing mechanism on monitoring box 31. At this time, filter screen 4 is installed at air inlet of monitoring box 31. The chamfered block 41 of filter screen 4 at air inlet contacts and engages with chamfered groove of right angle bracket 33. The bottom of filter screen 4 contacts and engages with sensor on strip bracket 315.

[0036] Rotating the eccentric disk 1511 on the worm gear 151 causes the worm gear 151 to drive the worm wheel 152 to rotate. The worm wheel 152 meshes with the rack 153, causing the rack 153 to move longitudinally. The rack 153 then causes the adjusting frame 14 to move longitudinally within the support frame 13. The meshing action of the worm gear 151 and the worm wheel 152 limits the position of the adjusting frame 14, ensuring the stability of the monitoring process. The limiting component 15 drives the adjusting frame 14 to slide longitudinally within the support frame 13, adjusting the relationship between the adjusting frame 14 and the support frame 13. The relative position between them is adjusted by the adjustment frame 14, which drives the column shaft 25 of the first set of telescopic components to move, changing the center distance between the column shaft 25 and the convex column 131, thereby changing the included angle between each pair of rockers 21. At the same time, the included angle between the main three-hole connecting rod 221 and the secondary three-hole connecting rod 222 of the X-shaped frame 22 of each set of telescopic components changes accordingly, thereby changing the height of the support plate 23. During this process, the last set of telescopic components drives the pin seat 24 to slide at the bottom of the support plate 23 until the monitoring box 31 moves to the target position.

[0037] The air extractor 8 and power source are started. The power source drives the monitoring box 31 to rotate on the support plate 23, so that the air extractor 8 can extract air from all sides at the same height to ensure the accuracy of sampling. The air extractor 8 extracts a certain volume of air. The air passes through the filter screen 4 at the air inlet. The filter screen 4 collects particles in the air. After the air is extracted, the sensor controls the spraying degree of the spray box 7 according to the change in weight of the filter screen 4 on the strip bracket 315. The spray liquid is sprayed out from the nozzle 71 to adsorb particles in the air.

[0038] After spraying is complete, rotate the worm gear 151 in the reverse direction, thereby causing the adjusting frame 14 to move in the reverse direction inside the support frame 13 until the monitoring box 31 is lowered to the lowest position. Then, manually push the handle 331 of the right-angle frame 33. Handle 331 slides on the rectangular rail 313 of the monitoring box 31, compressing the return spring 34. The vertical frame of the right-angle bracket 33 pushes the filter screen 4 at the air inlet toward the chamfered surface of the sealing mechanism. The horizontal frame of the right-angle bracket 33 contacts and engages with the bottom of the filter screen 4 at the feed inlet to prevent the filter screen 4 at the feed inlet from falling. The chamfered block 41 of the particle-collecting filter screen 4 pushes the chamfered surface of the sealing mechanism, causing the sealing slide rod 521 of the sealing support plate 52 to slide on the sealing base plate 51. The sealing spring 53 is compressed until the particle-collecting filter screen 4 is completely inserted into the sealing base plate 51 and... Between the sealing support plates 52, the sealing base plate 51 and the sealing support plates 52 seal the filter screen 4 that collects particles, disconnecting the force applied to the handle 331 of the right-angle frame 33. Under the elastic action of the return spring 34, the right-angle frame 33 returns to its initial position, the horizontal frame of the right-angle frame 33 disconnects from the filter screen 4 at the feed port, and the filter screen 4 at the feed port falls at the air inlet. At this time, the chamfered block 41 of the filter screen 4 in the chamfered groove on the vertical frame of the right-angle frame 33 and the bottom of the filter screen 4 contact and cooperate with the strip bracket 315, which facilitates the next environmental quality monitoring of the construction site.

[0039] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the protection scope of this invention.

Claims

1. A construction site environmental quality monitoring device, comprising a support structure and a monitoring mechanism, characterized in that: The support mechanism includes a base plate (11) and a support frame (13). The base plate (11) and the support frame (13) are fixedly installed together. An adjusting frame (14) is longitudinally slidably installed inside the support frame (13). A limiting component (15) for driving the adjusting frame (14) to slide longitudinally is provided between the adjusting frame (14) and the support frame (13). A telescopic mechanism is provided between the monitoring mechanism and the adjusting frame (14). The adjusting frame (14) drives the telescopic mechanism to adjust the height of the monitoring mechanism. The monitoring mechanism includes a monitoring box (31) and a right-angle frame (33). The monitoring box (31) is rotatably installed on the support plate (23) on the top of the telescopic mechanism. The right-angle frame (33) is horizontally slidably installed inside the monitoring box (31). The monitoring box (31) is equipped with a feeding mechanism and an air extractor (8). The feeding mechanism automatically installs the filter screen (4) between the air inlet on the monitoring box (31) and the air extraction port of the air extractor (8). When the air extractor (8) extracts air, the particles in the air adhere to the filter screen (4). The right-angle frame (33) inside the monitoring box (31) contacts and cooperates with the filter screen (4) at the air inlet. The disassembly slot (314) of the monitoring box (31) is detachably equipped with a sealing mechanism. The right-angle frame (33) seals the filter screen (4) after collecting particles into the sealing mechanism.

2. The on-site environmental quality monitoring equipment for construction projects according to claim 1, characterized in that: There are two sets of limiting components (15). The two sets of limiting components (15) are symmetrically arranged on both sides of the support frame (13). Rectangular frames (132) are symmetrically arranged on both sides of the support frame (13). The limiting component (15) includes a worm (151) and a worm wheel (152). The worm (151) is rotatably installed inside the rectangular frame (132), and the worm wheel (152) is rotatably installed on the support frame (13). The worm (151) and the worm wheel (152) mesh and drive each other. Two sets of racks (153) that mesh and drive the worm wheel (152) are symmetrically fixed on the caster wheel (12).

3. The on-site environmental quality monitoring equipment for construction projects according to claim 1, characterized in that: The telescopic mechanism includes two pairs of rockers (21) and multiple sets of telescopic components. The ends of the two pairs of rockers (21) are symmetrically mounted on the protrusions (131) of the support frame (13). The two X-shaped frames (22) of each set of telescopic components are symmetrically arranged on both sides of the support frame (13). The X-shaped frame (22) consists of a main three-hole connecting rod (221) and a secondary three-hole connecting rod (222) rotatably mounted in the middle. A column shaft (25) is rotatably mounted in the middle of the main three-hole connecting rod (221) and the secondary three-hole connecting rod (222). The two X-shaped frames (22) of the first set of telescopic components correspond to the two pairs of rockers (21) respectively. The ends of the main three-hole connecting rod (221) and the secondary three-hole connecting rod (222) of the first set of telescopic components are rotatably connected to the tail of the rocker (21) respectively. The column shaft (25) of the first set of telescopic components is rotatably mounted on the adjusting frame (14).

4. The on-site environmental quality monitoring equipment for construction projects according to claim 3, characterized in that: The multiple sets of telescopic components are arranged in sequence, and adjacent sets of telescopic components are rotatably installed. The end of the main three-hole connecting rod (221) of one set of telescopic components is rotatably installed with the tail of the secondary three-hole connecting rod (222) of another set of telescopic components, and the end of the secondary three-hole connecting rod (222) is rotatably installed with the tail of the main three-hole connecting rod (221) of another set of telescopic components. A connecting shaft (26) is rotatably connected at the rotatable connection of adjacent sets of telescopic components.

5. The on-site environmental quality monitoring equipment for construction projects according to claim 4, characterized in that: The support plate (23) has two pairs of pin seats (24) symmetrically slidably installed at the bottom. The two pairs of pin seats (24) correspond to the two X-shaped frames (22) of the last set of telescopic components. The pin seats (24) are rotatably installed at the tail of the main three-hole connecting rod (221) and the end of the three-hole connecting rod (222) of the X-shaped frame (22) of the last set of telescopic components.

6. The on-site environmental quality monitoring equipment for construction projects according to claim 1, characterized in that: The sealing mechanism includes a sealing base plate (51) and a sealing support plate (52). Sealing slide rods (521) are respectively provided at the four corners of the sealing support plate (52). The sealing support plate (52) is slidably mounted on the sealing base plate (51) via the sealing slide rods (521). A sealing spring (53) is provided between the bottom of the sealing slide rod (521) and the sealing base plate (51). The sealing spring (53) is slidably mounted on the sealing slide rod (521). Sealing springs (53) are provided on the same side of the sealing support plate (52) and the sealing base plate (51). A disassembly block (511) is provided on the chamfered surface and the sealing base plate (51). The disassembly block (511) is slidably installed on the disassembly groove (314) of the monitoring box (31). A disassembly frame (311) is provided on the monitoring box (31) adjacent to the disassembly groove (314). The length and width of the disassembly frame (311) are equal to those of the sealing base plate (51) and the sealing support plate (52). A T-shaped pin (32) is longitudinally provided on the pin groove (312) of the monitoring box (31). The T-shaped pin (32) contacts and engages with the disassembly block (511).

7. The on-site environmental quality monitoring equipment for construction projects according to claim 6, characterized in that: The feeding mechanism includes a feeding box (61) and a push plate (62). The feeding box (61) is fixedly installed inside the monitoring box (31). The push plate (62) is slidably installed inside the feeding box (61). A feeding spring (63) is provided between the feeding box (61) and the push plate (62). The filter screen (4) is slidably installed inside the feeding box (61). A feeding port is provided at the bottom of the feeding box (61) near the monitoring box (31). The bottom of the filter screen (4) at the air inlet contacts and cooperates with the strip bracket (315) inside the monitoring box (31). A sensor is provided on the strip bracket (315). The sensor is electrically connected to the spray box (7) inside the monitoring box (31).

8. The on-site environmental quality monitoring equipment for construction projects according to claim 7, characterized in that: The vertical frame of the right-angle frame (33) is provided with a chamfered groove, and the filter screen (4) is symmetrically provided with chamfered blocks (41) on both sides. The chamfered blocks (41) of the filter screen (4) at the air inlet are in contact with the chamfered groove of the right-angle frame (33), and the chamfered blocks (41) are in contact with the chamfered surface of the sealing mechanism. The horizontal frame of the right-angle frame (33) is in contact with the bottom of the filter screen (4) at the feed port. A reset spring (34) is provided between the right-angle frame (33) and the monitoring box (31). The reset spring (34) is located inside the rectangular rail (313) of the monitoring box (31).

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