CN114814109A - Portable movable air detector for building construction and use method thereof - Google Patents
Portable movable air detector for building construction and use method thereof Download PDFInfo
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- CN114814109A CN114814109A CN202210508973.0A CN202210508973A CN114814109A CN 114814109 A CN114814109 A CN 114814109A CN 202210508973 A CN202210508973 A CN 202210508973A CN 114814109 A CN114814109 A CN 114814109A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/0406—Accessories for helmets
- A42B3/0433—Detecting, signalling or lighting devices
- A42B3/046—Means for detecting hazards or accidents
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/08—Chin straps or similar retention devices
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Abstract
The invention discloses a portable movable air detector for building construction and a using method thereof. The invention provides a portable movable air detector for building construction and a using method thereof, wherein detection equipment is effectively combined with a safety helmet, so that the portable movable air detector is more convenient to carry, a detection person can only detect after wearing the safety helmet correctly, the safety helmet is worn when the detection person enters a construction site, the detection person can only detect when the detection person walks, the air condition of one position is prevented from being stolen from the source by the detection person, the detection result is more accurate, and the brand new air of the brand new position of the air is measured every time, so that the detection result is more representative.
Description
Technical Field
The invention relates to the technical field of air detection, in particular to a portable movable air detector for building construction and a using method thereof.
Background
The building materials are materials used in the building construction, decoration, repair and other processes, most of the building materials are products obtained after artificial manufacture, and formaldehyde and other harmful substances are contained in the building materials, and the harmful substances can be diffused in the air in the construction process, so that constructors can work in the vehicle environment for a long time and can cause great damage to bodies;
the existing detection device is a large-scale device, is inconvenient to carry, and when detecting, detection personnel are easy to steal and lazy and only detect frequently in one place, and the detected sample is not representative.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a portable movable air detector for building construction and a using method thereof.
In order to solve the technical problems, the invention is solved by the following technical scheme: a portable movable air detector for building construction comprises a safety helmet and a detection unit, wherein the safety helmet comprises a helmet body and a helmet belt, the detection unit is arranged in the helmet body and is provided with a power supply, two electrodes of the detection unit are respectively connected to the helmet body and the helmet belt, after the safety helmet is correctly worn, the detection unit can be electrified by taking a human body as a conductor, a mounting plate is arranged in the helmet body, the detection unit comprises a swinging block, an inflating device and a detection device, the inflating device comprises an impeller and a shell, the impeller is arranged on the shell in a unidirectional rotation manner, the shell is arranged on the mounting plate, the swinging block is arranged on the impeller in a unidirectional rotation manner, the detection device comprises a piston cylinder, the piston cylinder is arranged on the mounting plate, a piston ring is arranged on the piston ring in a sliding manner, a first connecting rod is movably arranged between the piston rod and the swinging block, and enables the piston rod to move back and forth along with the swinging block, the piston rod is of a hollow design, the outer end of the piston rod is connected with the first air outlet on the shell through a hose, the other end of the piston rod is connected with the piston ring, compressed air generated by rotation of the impeller can enter the piston rod, the piston ring is provided with an air vent which is communicated with the hollow hole of the piston rod, an automatic plug is arranged on the air vent in a sliding mode, the air vent can automatically control the air vent to be closed, a detection module is arranged on the automatic plug, and air which can enter the piston rod can be detected.
It has beneficial effect to lie in, and the testing personnel only can detect after correctly wearing the safety helmet, when making inspection personnel get into the construction site, all worn the safety helmet, and just can detect when only the testing personnel walk about, prevent the air condition that the lazy value of testing personnel detected a position from the source, make the testing result more accurate, and the brand-new air of the brand-new position of air of at every turn measuring to make the testing result have more the representative.
In the above scheme, preferably, the swing blocks are arranged in a bilateral symmetry manner, the rotation points of the swing blocks are located on a central line, a first rotation shaft is arranged on the swing body at the lower portion and is also located on the central line, a second rotation shaft is arranged on the piston rod, and two ends of the first connecting rod are respectively rotatably arranged on the first rotation shaft and the second rotation shaft.
The swing block has the beneficial effect that the distances of the front and back rotation of the swing block are consistent.
In the above scheme, preferably, the front end of the piston cylinder is provided with a second air outlet, and the air outlet is provided with an elastic plugging block, which is in a closed state at an initial state and can be automatically opened when air pressure is increased.
In the above scheme, preferably, the automatic stopper is provided with a conical plug, a guide pillar and a limiting block, the conical plug is arranged on the vent hole in a sliding manner through the guide pillar and can slide back and forth, the diameter of the bottom end of the conical plug is larger than that of the vent hole, the conical surface of the conical plug is provided with the detection module, and the guide pillar and the limiting block are provided with long grooves.
In the above scheme, preferably, the rear end of the piston cylinder is further provided with a first air inlet hole and a third air outlet hole, the first air inlet hole is connected with the second air outlet hole through a pipeline, the piston cylinder is further rotatably provided with a blocking plate, the blocking plate can automatically block the third air outlet hole when the piston rod slides inwards, and the blocking plate can be automatically opened when the piston rod slides outwards.
In the above scheme, it is preferred, the shutoff board includes the rotation wheel, and it rotates and sets up in the piston cylinder, and is located third venthole top, and its surface friction connects on the side of piston rod, and piston rod slip can drive it and take place to rotate around, be provided with the shrouding on the rotation wheel, it can plug up the third venthole.
The piston rod has the beneficial effects that the third air outlet hole can be automatically closed when the piston rod slides backwards, and the third air outlet hole is automatically opened when the piston rod slides forwards, so that the air discharged from the second air outlet hole can assist the piston ring to slide backwards, and the piston ring is not influenced when the piston rod slides forwards.
In the above aspect, preferably, the piston rod is arranged in a polygon shape, so that the piston rod is slidably arranged in the piston cylinder in a guiding manner.
The sliding guide device has the beneficial effect that the sliding of the piston rod is guided to slide.
In the above scheme, preferably, the cap body is divided into an upper layer and a lower layer by the mounting plate, the upper layer is provided with the through hole, and the detection unit is located on the upper layer of the cap body.
The use method of the portable movable air detector for building construction comprises the following steps:
and S1, the detection personnel correctly wear the safety helmet on the head, enter the construction position and press the starting switch.
And S2, the detection personnel start to move around the construction position, so that the swinging block rotates back and forth, the swinging block rotates forwards to drive the impeller to rotate, and the air at the construction position is filled into the piston cylinder.
And S3, the swinging block rotates backwards to stop the rotation of the impeller and move the piston ring backwards to enable the detection module to detect the air filled before and push the air backwards.
S4, the air is pumped into the front end of the piston cylinder again to assist the backward sliding of the piston ring
The invention has the beneficial effects that: the invention provides a portable movable air detector for building construction and a using method thereof, wherein detection equipment is effectively combined with a safety helmet, so that the portable movable air detector is more convenient to carry, a detection person can only detect after wearing the safety helmet correctly, the safety helmet is worn when the detection person enters a construction site, the detection person can only detect when the detection person walks, the air condition of one position is prevented from being stolen from the source by the detection person, the detection result is more accurate, and the brand new air of the brand new position of the air is measured every time, so that the detection result is more representative.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is an overall sectional view of the present invention.
FIG. 3 is a schematic view of a detecting unit according to the present invention.
FIG. 4 is a longitudinal cross-sectional view of a detection unit of the present invention.
FIG. 5 is a transverse cross-sectional view of a detection unit of the present invention.
FIG. 6 is a schematic diagram of the internal structure of the detecting unit of the present invention.
FIG. 7 is a schematic view of the automatic plugging of the present invention.
Fig. 8 is a schematic view of the plugging plate of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: with reference to figures 1-8 of the drawings,
the portable movable air detector for building construction comprises a safety helmet 1 and a detection unit 2, wherein the safety helmet 1 comprises a helmet body 11 and a helmet belt 12, a mounting plate 13 is arranged on the helmet body 11, the helmet body is divided into an upper part and a lower part through the mounting plate 13, a through hole is formed in the upper part, the upper part of the helmet body is enabled to freely circulate with outside air, the detection unit 2 is arranged on the mounting plate 13, a power supply is arranged in the detection unit 2, two poles of the power supply are respectively connected to the helmet body 11 and the helmet belt 12, when an operator correctly wears the safety helmet on the head, the helmet body 11 is in contact with the top of the head of a human body at the moment, the helmet belt 12 is in contact with the chin of the human body, the human body serves as a conductor at the moment, the positive pole and the negative pole of the power supply are electrified, and the detection unit 2 is enabled to be electrified.
The detection unit 2 comprises a swing block 3, an air inflating device 4 and a detection device 5, wherein the air inflating device 4 comprises an impeller 41 and a shell 42, the shell 42 is arranged on the mounting plate 13 and provided with an air inlet end 422 and an air outlet end 421, the impeller 42 is arranged on the shell 42 in a one-way rotating mode, air can be sucked from the air inlet end 422 and discharged from the air outlet end 421 when the impeller 42 rotates, an impeller shaft 423 on the impeller 42 is outwards derived, and the swing block 3 is arranged on the impeller 42 in a one-way rotating mode.
When a person walks with the safety helmet, the head of the person can displace back and forth, so that the swinging block 3 can be driven to rotate back and forth, when the rotating block 3 rotates forwards, the rotating block 3 drives the impeller 41 to rotate together, so that air is sucked from the air inlet end 422 and exhausted from the air outlet end 421, and when the rotating block 3 rotates backwards, the impeller 41 rotates backwards in a unidirectional way, so that the rotating block 3 rotates relative to the impeller 41.
The detection device 5 comprises a piston cylinder 51, a piston ring 52, a piston rod 53 and a first connecting rod 54, wherein the piston ring 52 is arranged on the mounting plate 13, a vent hole 521 is arranged on the piston ring 52, the piston rod 53 is of a hollow design, one end of the piston rod 53 is communicated with the vent hole 521 and is arranged on the piston ring 52, the piston ring 52 is arranged on the piston cylinder 51 in a sliding manner, meanwhile, the piston rod 53 is of a polygonal design and is arranged on the piston cylinder 51 in a guiding and sliding manner, a second rotating shaft 531 is arranged on the piston rod 53, a first rotating shaft 31 is arranged on the swinging block 3, two ends of the first connecting rod 54 are respectively and rotatably connected on the first rotating shaft 31 and the second rotating shaft 531, so that the swinging block 3 is connected with the piston rod 53, and the other end of the piston rod 53 is connected with an air outlet hole 421 through a hose, so that compressed air generated by the rotation of the impeller 41 enters the piston rod 53 through the hose, the front end of the piston cylinder 51 is provided with a second air outlet 511, and the second air outlet 511 is provided with an elastic blocking block 512, which is in a closed state at an initial state, can be opened under the action of air pressure when the internal air pressure is increased, and can close the second air outlet 511 under the action of self elasticity when the air pressure is reduced.
Wherein the piston rod 53 can be driven to slide back and forth together when the swing block 3 is rotated back and forth.
The vent hole 521 is provided with an automatic plug 55 in a sliding manner, a guide post 552 is arranged on the automatic plug 55, two ends of the automatic plug 55 are respectively provided with a conical plug 551 and a limiting block 553, the automatic plug 55 is arranged on the vent hole 521 in a sliding manner through the guide post 552 and can slide back and forth, the automatic plug 55 and the limiting block 553 limit the automatic plug 55 on the piston ring 52 back and forth, and the guide post 552 and the limiting block 553 are provided with long grooves.
When the automatic plug 55 slides forwards, the inner hole of the piston rod 53 can be communicated with the space, located at the rear end of the piston ring 52, in the piston cylinder 51 through the guide post 552 and the long groove of the limiting block 553, and when the automatic plug 55 slides backwards and the bottom surface of the conical plug 551 is pressed against the piston ring 52, the inner hole of the piston rod 53 is disconnected with the space, located at the rear end of the piston ring 52, in the piston cylinder 51.
When the swing block 3 rotates forwards, the rotation block 3 drives the impeller 41 to rotate together, so that air is sucked from the air inlet end 422 and enters the piston rod 53 from the air outlet end 421 through the hose, at the moment, the piston rod 421 slides forwards together under the action of the swing block 3, so that the space at the rear end of the piston ring 52 in the piston cylinder 51 is increased, the air pressure in the piston cylinder 51 is reduced, the automatic plug 55 automatically slides forwards, the inner space is communicated with the middle hole of the piston rod 42, and compressed air generated by the impeller 41 enters the space at the rear end of the piston ring 52 in the piston cylinder 51.
When the swing block 3 rotates backward, the impeller 41 does not rotate, the rotation block 3 rotates with respect to the impeller 41, and the rotation block 3 rotates backward, driving the piston rod 53 to slide backward together, so that the space at the rear end of the piston ring 52 decreases, the internal air increases, so that the automatic stopper 55 slides forward, thereby plugging the air vent 521, and simultaneously the piston ring 52 slides backward, so that the internal air pressure continues to increase, thereby opening the elastic stopper 512 on the second air outlet 511, and the air is discharged outward from the second air outlet 511.
The automatic plug 55 is provided with a detection module 56 which is arranged on the conical surface of the conical plug 551, the back surface of the conical plug 511 is provided with a press-contact switch, when the conical plug 551 is pressed against the piston ring 52, the press-contact switch thereon is pressed, so that when the piston ring 5 slides backwards, the detection module 56 is started to detect the air inside.
The rear end of the piston cylinder 51 is further provided with a first air inlet 513 and a third air outlet 513, the first air inlet 513 is connected with the second air outlet 511 through a pipeline, when the piston ring 52 slides backwards to discharge air from the second air outlet 511, the discharged air enters the other end of the piston cylinder 51 through the pipeline, the piston cylinder 51 is further rotatably provided with a blocking plate 57 which comprises a rotating wheel 571, the rotating wheel 571 is rotatably arranged in the piston cylinder 51, the surface of the rotating wheel 571 is in friction connection with the side surface of the piston rod 53 and is positioned above the third air outlet 513, the piston rod 53 can be driven to rotate by the forward and backward sliding of the piston rod 53, and the rotating wheel 571 is provided with a sealing plate 572 which can block the third air outlet 513.
When the piston rod 53 slides backwards, the surface of the rotating wheel 571 is in friction contact with the piston rod 53, so that when the piston rod 53 slides, the rotating wheel 571 drives the sealing plate 572 to turn forwards, so that the sealing plate 572 blocks the third air outlet 513, and when the piston rod 53 slides backwards, and drives the piston ring 52 to slide backwards, after detecting the air behind the piston ring 52, the detection module 56 discharges the air from the second air outlet 511, and the discharged air enters the piston cylinder 51 again through the pipeline and is located at the front end of the piston ring 52, thereby assisting the piston ring 52 to slide backwards.
When the piston rod 53 slides forward, the rotating wheel 571 drives the closing plate 572 to turn backward, so that the third air outlet 513 is opened, and the piston rod 53 slides forward, driving the piston ring 52 to slide forward, discharging the air at the front end of the piston ring 52 from the third air outlet 513, thereby having no influence on the forward sliding of the piston ring 52.
The impeller 41 is forward toward the air inlet 422, and the surface of the piston ring 52 connected to the piston rod 53 is the front end surface.
The working principle or the using method is as follows:
when air at a building construction position needs to be detected, a detector correctly wears the helmet 1 on the head, and the detection unit 2 is electrified.
After a person wears the safety helmet and enters a construction position, the person presses a starting switch, the equipment is in a working state, at the moment, the detection person starts to walk along the construction position, the detection person walks to drive the swing block 3 to rotate back and forth in a reciprocating mode, when the swing block 3 rotates forwards, the swing block 3 drives the impeller 41 to rotate together, air is sucked from the air inlet end 422 and enters the piston rod 53 from the air outlet end 421 through the hose, at the moment, the piston rod 421 slides forwards under the action of the swing block 3, the space at the rear end of the piston ring 52 in the piston cylinder 51 is increased, the air pressure in the piston cylinder 51 is reduced, the automatic plug 55 automatically slides forwards, the center hole of the piston rod 53 is communicated with the space at the rear end of the piston ring 52, and compressed air generated by the impeller 41 enters the space at the rear end of the piston ring 52 in the piston cylinder 51.
When the rotating block 3 rotates forward by a certain angle, it starts to rotate backward, and at this time, the impeller 41 does not rotate due to the unidirectional rotation, but the rotating block 3 rotates relative to the impeller 41, and it drives the piston rod 53 to slide backward together, so that the space at the rear end of the piston ring 52 is reduced, the internal air is increased, so that the automatic plug 55 slides forward, thereby plugging the air vent 521, when the conical plug 551 is pressed against the piston ring 52, the press-contact switch thereon is pressed, the detection module 56 is started to detect the internal air, and at the same time, the piston ring 52 slides backward, so that the internal air pressure at the rear end of the piston ring 52 continues to increase, thereby opening the elastic plug 512 on the second air outlet 511, discharging the detected air from the second air outlet 511, and the discharged air enters the piston cylinder 51 again through the pipeline, and is located at the front end of the piston ring 52 to assist in pushing the piston ring 52 to slide rearward.
When the piston rod 53 slides forward, the rotating wheel 571 drives the closing plate 572 to turn backward, so that the third air outlet 513 is opened, and the piston rod 53 slides forward, driving the piston ring 52 to slide forward, discharging the air at the front end of the piston ring 52 from the third air outlet 513, thereby not affecting the forward sliding of the piston ring 52.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. Portable portable air detector is used in construction, its characterized in that: the safety helmet comprises a safety helmet (1) and a detection unit (2), wherein the safety helmet (1) comprises a helmet body (11) and a helmet belt (12), the detection unit (2) is arranged in the helmet body (11), a power supply is arranged on the detection unit, two electrodes of the detection unit are respectively connected to the helmet body (11) and the helmet belt (12), and after the safety helmet (1) is correctly worn, the detection unit (2) can be electrified by taking a human body as a conductor;
the helmet is characterized in that a mounting plate (13) is arranged in the helmet body (11), the detection unit (2) comprises a swing block (3), an inflating device (4) and a detection device (5), the inflating device (4) comprises an impeller (41) and a shell (42), the impeller (41) is arranged on the shell (42) in a one-way rotating mode, the shell (42) is arranged on the mounting plate (13), and the swing block (3) is arranged on the impeller (41) in a one-way rotating mode;
the detection device (5) comprises a piston cylinder (51) which is arranged on the mounting plate (13), a piston ring (52) is arranged in the piston cylinder in a sliding mode, a piston rod (53) is arranged on the piston ring (52), a first connecting rod (54) is movably arranged between the piston rod (53) and the swinging block (3) to enable the piston rod (53) to move back and forth along with the swinging block (3), the piston rod (53) is of a hollow design, the outer end of the piston rod (53) is connected with a first air outlet hole (421) in the shell (42) through a hose, the other end of the piston rod is connected with the piston ring (52), and compressed air generated by rotation of the impeller (41) can enter the piston rod (53);
the piston ring (52) is provided with a vent hole (521) which is communicated with the hollow hole of the piston rod (53), an automatic plug (55) is arranged on the vent hole (521) in a sliding mode and can automatically control the closing of the vent hole (521), and a detection module (56) is arranged on the automatic plug (55) and can detect air entering the automatic plug.
2. The portable movable air detector for building construction according to claim 1, characterized in that: the swing block (3) is arranged in a bilateral symmetry mode, the rotating point of the swing block is located on a central line, a first rotating shaft (31) is arranged on a swing body at the lower portion and is also located on the central line, a second rotating shaft (531) is arranged on the piston rod (53), and two ends of a first connecting rod (54) are respectively rotatably arranged on the first rotating shaft (31) and the second rotating shaft (531).
3. The portable movable air detector for building construction according to claim 1, characterized in that: the front end of the piston cylinder (51) is provided with a second air outlet (511), and an elastic plugging block (512) is arranged on the air outlet (511), is in a closed state at the initial state and can be automatically opened when the air pressure is increased.
4. The portable movable air detector for building construction according to claim 3, characterized in that: the automatic stopper (55) is provided with a conical plug (551), a guide post (552) and a limiting block (553), the conical plug is arranged on the vent hole (521) in a sliding mode through the guide post (552) and can slide back and forth, the diameter of the bottom end of the conical plug (551) is larger than that of the vent hole (521), the conical surface of the conical plug is provided with a detection module (56), and the guide post (552) and the limiting block (553) are provided with long grooves.
5. The portable movable air detector for building construction according to claim 1, characterized in that: still seted up first inlet port (513) and third venthole (513) on piston cylinder (51) rear end, pass through the pipe connection between first inlet port (513) and second venthole (511), and still rotate in piston cylinder (51) and be provided with shutoff board (57), it can be when piston rod (53) inwards slide, automatic shutoff third venthole (513), when piston rod (53) outwards slide, automatic opening.
6. The portable movable air detector for building construction according to claim 5, characterized in that: the blocking plate (57) comprises a rotating wheel (571) which is rotatably arranged in the piston cylinder (51) and is positioned above the third air outlet hole (513), the surface of the rotating wheel is frictionally connected to the side surface of the piston rod (53), the piston rod (53) can be driven to rotate by the forward and backward sliding of the piston rod, and a sealing plate (572) is arranged on the rotating wheel (571) and can block the third air outlet hole (513).
7. The portable movable air detector for building construction according to claim 1, characterized in that: the piston rod (53) is arranged in a polygon shape, so that the piston rod is arranged in the piston cylinder (51) in a guiding and sliding manner.
8. The portable movable air detector for building construction according to claim 1, characterized in that: the cap body (11) is divided into an upper layer and a lower layer through the mounting plate (13), a through hole is formed in the upper layer, and the detection unit (2) is located on the upper layer of the cap body (11).
9. The use method of the portable movable air detector for building construction according to claim 1, characterized in that:
s1, correctly wearing the safety helmet on the head by a detector, entering a construction position, and pressing a starting switch;
s2, the detection personnel start to move around the construction position, so that the swinging block rotates back and forth, the swinging block rotates forwards to drive the impeller to rotate, and the air at the construction position is filled into the piston cylinder;
s3, the swinging block rotates backwards to stop the impeller and move the piston ring backwards to make the detection module detect the air before filling and push the air backwards;
and S4, the extruded air is introduced into the front end of the piston cylinder again so as to assist the piston ring to slide backwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210508973.0A CN114814109B (en) | 2022-05-11 | 2022-05-11 | Portable movable air detector for building construction and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210508973.0A CN114814109B (en) | 2022-05-11 | 2022-05-11 | Portable movable air detector for building construction and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114814109A true CN114814109A (en) | 2022-07-29 |
| CN114814109B CN114814109B (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210508973.0A Active CN114814109B (en) | 2022-05-11 | 2022-05-11 | Portable movable air detector for building construction and use method thereof |
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| CN (1) | CN114814109B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508258A (en) * | 2022-09-20 | 2022-12-23 | 格瑞利(江苏)智能科技有限公司 | Raise dust monitoring method and system for construction site area |
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| JPH0693505A (en) * | 1991-11-19 | 1994-04-05 | Souji Kobayashi | Helmet |
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| CN206333438U (en) * | 2016-12-26 | 2017-07-18 | 台州市旌羽电器有限公司 | A kind of combustible gas detector that can be worn on the helmet |
| JP2020176364A (en) * | 2019-04-17 | 2020-10-29 | 广州成呈智能科技有限公司 | Airbag helmet |
| CN210870032U (en) * | 2019-12-10 | 2020-06-30 | 曹海成 | Safety helmet that construction management used |
| CN215641138U (en) * | 2021-08-17 | 2022-01-25 | 埃飘环境科技(上海)有限公司 | Portable gas detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508258A (en) * | 2022-09-20 | 2022-12-23 | 格瑞利(江苏)智能科技有限公司 | Raise dust monitoring method and system for construction site area |
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| CN114814109B (en) | 2022-11-25 |
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