Portable harmful gas detection device

Abstract

The invention discloses a portable harmful gas detection device, and relates to the field of gas detection devices, the portable harmful gas detection device comprises a detector body, the detector body is provided with a display screen, a plurality of buttons and a charging port for charging, and one side of the detector body is also provided with an elastic bandage for binding. It needs to be explained that when the protection boxes are touched and fall off, the two protection boxes automatically reset, the detector body is protected, and damage is avoided; in addition, when the air suction head is moved to suck air, the communication box automatically moves downwards and is inserted into the air inlet filter head through the insertion hole, so that the air inlet filter head exhausts air through the communication box and the transfer box, measurement in multiple modes is achieved, meanwhile, the synchronous locking frame is inserted into the locking groove, the two protection boxes are locked, and the situation that the air suction head is not prone to falling off during air suction is avoided. The problem that the detection result is not accurate due to the fact that air at other positions enters the detector body is solved, and the detector body is more convenient and accurate to use.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection devices, and in particular to a portable harmful gas detection device. Background Art

[0002] A gas detector is an instrument tool for detecting gas leakage concentration, including: portable gas detector, handheld gas detector, fixed gas detector, online gas detector, etc. It mainly uses gas sensors to detect the types of gas in the environment. Gas sensors are sensors used to detect the composition and content of gases. It is generally believed that the definition of gas sensors is based on the detection target. In other words, all sensors used to detect gas composition and concentration are called gas sensors, regardless of whether they use physical or chemical methods. For example, sensors that detect gas flow are not considered gas sensors, but thermal conductivity gas analyzers are important gas sensors, although they sometimes use roughly the same detection principles.

[0003] With the advancement of technology, the size of gas detectors has been made smaller and smaller, and they can detect a variety of gases. They are powered by built-in batteries, easy to use, and rechargeable. It should be noted that during the detection, the power is turned on by pressing a button, and the air is pumped by the built-in air pump. The incoming air is filtered through the air intake filter head and enters the fuselage for detection. When harmful gases are detected, an alarm is issued through an alarm light and a buzzer. At the same time, it is tied to the head, waist or other required parts of the staff through a tiger clip or a loose belt. However, in the actual use process, since the gas detection is not only carried out on flat ground, most of the time, the staff needs to climb up and down and carry the detector for detection. When encountering many obstacles or a narrow position, the detector will be pulled or collided and then fall. When the detector falls, a large impact occurs. Since the detector is a relatively precise instrument, the detector is damaged or even directly scrapped. Therefore, not only does the gas detection work fail, but the damage of the detector also brings economic losses. Summary of the invention

[0004] The purpose of the present invention is to provide a portable harmful gas detection device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A portable harmful gas detection device comprises a detector body, the detector body is provided with a display screen, a plurality of buttons and a charging port for charging, one side of the detector body is also provided with an elastic band for binding, the other side of the detector body is provided with an alarm light and an alarm buzzer, and the top side of the detector body is provided with an air intake filter head for inhaling and filtering air;

[0007] A mounting seat is provided on one side of the detector body, the detector body is inserted into the mounting seat, a fall-off protection device is installed on the mounting seat, and the fall-off protection device is used to protect the detector body; the fall-off protection device includes two protection boxes, both of which are slidably installed in the mounting seat, a plug-in seat is installed on one side of the mounting seat, a plug-in frame is plugged into the plug-in seat, and the elastic band passes through the plug-in frame;

[0008] It also includes an auxiliary air extraction device, which is installed on the fall-off protection device and is used to extract air from different positions; the auxiliary air extraction device includes a reel, which is installed on one side of the mounting seat, and an air extraction pipe is rolled up in the reel, one end of the air extraction pipe is used to connect the air inlet filter head, and the other end of the air extraction pipe is installed with an air suction head, and the air extraction pipe is moved to extract air from different positions;

[0009] A synchronous locking device is installed on the fall-off protection device, and the synchronous locking device is used to lock the fall-off protection device; the synchronous locking device includes a synchronous locking frame, and the synchronous locking frame is movably installed on the top inner wall of one of the protection boxes, and a locking groove is provided on the top inner wall of the other protection box. The synchronous locking frame moves up and is inserted into the locking groove to lock the two protection boxes.

[0010] Furthermore, in a preferred embodiment of the present invention, the fall-off protection device further comprises two driving round seats, and the two driving round seats are both rotatably mounted on the mounting seat;

[0011] The two driving round seats are both equipped with driving frames, the two protection boxes are both equipped with push-pull frames, the two driving frames are both equipped with driving shafts, and the two driving shafts are respectively and movably equipped on the two push-pull frames.

[0012] Furthermore, in a preferred embodiment of the present invention, a linkage push frame is movably mounted on the mounting seat, and the linkage push frame is movably mounted on the two driving round seats;

[0013] The two driving round seats are both movably mounted with arc-shaped driving grooves, and the linkage push frame is mounted with two driving blocks, which are movably mounted in the two driving grooves respectively.

[0014] Furthermore, in a preferred embodiment of the present invention, a drive slot and a connection slot are provided on the socket, and the socket frame is plugged into the drive slot;

[0015] One side of the linkage push frame extends into the driving slot and is installed with an arc-shaped clamp, a friction pad is installed on the plug-in frame, and the arc-shaped clamp is clamped on the friction pad;

[0016] A support spring is installed on the arc-shaped clamping head, and the other end of the support spring is installed on the mounting seat.

[0017] Furthermore, in a preferred embodiment of the present invention, two sliding grooves are provided on one side of the mounting seat, and the two protection boxes are slidably mounted in the two sliding grooves respectively;

[0018] Reset springs are installed on both inner walls of the sliding groove, and the other ends of the two reset springs are installed on the two protection boxes respectively.

[0019] Furthermore, in a preferred embodiment of the present invention, the auxiliary air extraction device further comprises a transfer box, the transfer box is mounted on one of the protection boxes, and the air extraction pipe is connected to the transfer box;

[0020] A connecting box is slidably sleeved on the adapter box, and the connecting box is adapted to the air intake filter head.

[0021] Furthermore, in a preferred embodiment of the present invention, a plug hole is provided on the bottom side of the connecting box, and the connecting box is plugged into the air intake filter head through the plug hole;

[0022] A sealing sleeve is sleeved on the transfer box, the sealing sleeve contacts the inner wall of the connecting box, a push-up spring is installed on the sealing sleeve, and the top end of the push-up spring is installed on the top inner wall of the connecting box.

[0023] Furthermore, in a preferred embodiment of the present invention, a closed push plate is provided in the protection box, and the closed push plate is used to push the connecting box upward and close the air intake filter head;

[0024] A rotating rod is rotatably mounted on the protection box, and the rotating rod is rotated to drive the closed push plate to rotate.

[0025] Furthermore, in a preferred embodiment of the present invention, the synchronous locking device also includes a pressing seat, and the pressing seat is installed on the closed push plate. The closed push plate rotates through the pressing seat to push the synchronous locking frame to move upward.

[0026] Furthermore, in a preferred embodiment of the present invention, a lifting slot is provided on the top inner wall of one of the protection boxes, and the synchronous locking frame is movably installed in the lifting slot;

[0027] A return spring is installed on the inner wall of the top side of the lifting slot, and the bottom end of the return spring is installed on the top side of the synchronous locking frame. The return spring is used to drive the synchronous locking frame to reset.

[0028] The beneficial effects of a portable harmful gas detection device proposed by the present invention are:

[0029] In the present invention, by setting up the fall-off protection device, when the worker moves or climbs up and down, once the protection box is hit and falls, the socket will be separated from the socket rack, and under the rebound force of the supporting spring, the two protection boxes will be reset to protect the detector body and avoid damage.

[0030] Furthermore, in the present invention, through the setting of the auxiliary vacuum device, when the vacuum head is needed to perform vacuum, the plug-in frame is inserted into the connecting slot, so that the detector body is stored in two protective boxes, the vacuum head is pulled, and the rotating rod is rotated, so that the rotating rod drives the closed push plate to rotate. At this time, the closed push plate no longer squeezes the connecting box, and then under the rebound force of the top spring, the connecting box moves down and is inserted into the air intake filter head through the plug-in hole, so that the air intake filter head is evacuated through the connecting box and the adapter box, thereby realizing various measurement methods.

[0031] Furthermore, in the present invention, through the setting of the synchronous locking device, when the rotating rod drives the closed push plate to rotate, the closed push plate drives the extrusion seat to move, so that the extrusion seat drives the synchronous locking frame to move upward, and the synchronous locking frame moves upward in the lifting slot and squeezes the return spring, so that the synchronous locking frame is inserted into the locking slot to lock the two protection boxes, thereby preventing air from other positions from entering the detector body while inhaling, causing inaccurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a portable harmful gas detection device provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the structure of a portable harmful gas detection device provided by an embodiment of the present invention, showing the connection between a detector body and a fall-off protection device;

[0034] Figure 3 A schematic diagram of the structure of a portable harmful gas detection device provided by an embodiment of the present invention, wherein a mounting base and a driving frame and other structures are connected;

[0035] Figure 4A schematic diagram of the structure of a portable harmful gas detection device provided by an embodiment of the present invention, wherein a driving round base and a driving frame and other structures are connected;

[0036] Figure 5 A schematic diagram of the structure of a portable harmful gas detection device provided by an embodiment of the present invention, wherein a protective box is connected to an elastic band and other structures;

[0037] Figure 6 A schematic cross-sectional view of the connection between a socket and a socket frame of a portable harmful gas detection device provided by an embodiment of the present invention;

[0038] Figure 7 A partial cross-sectional structural diagram of the connection between a linkage push frame and a driving round seat and other structures of a portable harmful gas detection device provided by an embodiment of the present invention;

[0039] Figure 8 A partial cross-sectional structural diagram of the connection between a mounting base and a protection box and other structures of a portable harmful gas detection device provided by an embodiment of the present invention;

[0040] Fig. 9 A schematic diagram of the structure of a portable harmful gas detection device provided by an embodiment of the present invention, wherein a transfer box and a connecting box and other structures are connected;

[0041] Fig.10 A schematic diagram of a partial cross-sectional structure of a portable harmful gas detection device provided by an embodiment of the present invention, wherein a transfer box and a connecting box and other structures are connected;

[0042] Fig.11 A schematic diagram of a partial structure of a portable harmful gas detection device provided by an embodiment of the present invention, wherein a synchronous locking frame and an extrusion seat and other structures are connected;

[0043] Fig.12 A partial cross-sectional structural diagram of a portable harmful gas detection device provided by an embodiment of the present invention, wherein a protection box and a synchronous locking frame and other structures are connected;

[0044] Fig.13 A partial cross-sectional structural schematic diagram of a protection box of a portable harmful gas detection device provided in an embodiment of the present invention.

[0045] In the figure: 1-detector body; 2-intake filter head; 3-mounting seat; 4-fall-off protection device; 401-protection box; 402-socket seat; 403-socket frame; 404-drive slot; 405-connection slot; 406-linked push frame; 407-arc-shaped clamp; 408-friction pad; 409-support spring; 410-drive round seat; 411-driving frame; 412-push-pull frame; 413-driving shaft; 414-sliding groove; 415-reset spring; 416-drive groove; 417-drive block; 5-auxiliary Vacuum device; 501-reeling drum; 502-vacuum pipe; 503-adapter box; 504-connecting box; 505-opening spring; 506-plug hole; 507-rotating rod; 508-closed push plate; 509-suction head; 510-sealing sleeve; 6-synchronous locking device; 601-synchronous locking frame; 602-locking groove; 603-lifting groove; 604-return spring; 605-extrusion seat; 7-display screen; 8-button; 9-charging port; 10-elastic strap; 11-alarm light; 12-alarm buzzer. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0049] In addition, in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In addition, the terms "horizontal", "vertical", "perpendicular" and the like do not mean that the components are required to be absolutely vertical, but can be slightly tilted. For example, "vertical" only means that its direction is more vertical than "horizontal", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Please refer to the attached manual Figure 1-13 A portable harmful gas detection device provided by an embodiment of the present invention comprises a detector body 1, the detector body 1 is provided with a display screen 7, a plurality of buttons 8 and a charging port 9 for charging, one side of the detector body 1 is also provided with an elastic band 10 for binding, the other side of the detector body 1 is provided with an alarm light 11 and an alarm buzzer 12, and the top side of the detector body 1 is provided with an air intake filter head 2 for inhaling and filtering air;

[0053] More specifically, a mounting seat 3 is provided on one side of the detector body 1, the detector body 1 is inserted into the mounting seat 3, a fall-off protection device 4 is installed on the mounting seat 3, and the fall-off protection device 4 is used to protect the detector body 1; the fall-off protection device 4 includes two protection boxes 401, both of which are slidably installed in the mounting seat 3, a plug-in seat 402 is installed on one side of the mounting seat 3, a plug-in rack 403 is plugged into the plug-in seat 402, and the elastic band 10 passes through the plug-in rack 403. It should be noted that in the embodiment of the present invention, when the worker moves or climbs up and down, once the protection box 401 is hit and falls, the plug-in seat 402 is separated from the plug-in rack 403, and under the rebound force of the support spring 409, the two protection boxes 401 are reset to protect the detector body 1 and avoid damage.

[0054] For further information, please refer to the attached manual. Figure 9-10 , a portable harmful gas detection device provided by an embodiment of the present invention also includes an auxiliary air extraction device 5, which is installed on the fall-off protection device 4, and is used to extract air from different positions; specifically, the auxiliary air extraction device 5 includes a reel 501, which is installed on one side of the mounting seat 3, and an air extraction pipe 502 is rolled up in the reel 501, one end of the air extraction pipe 502 is used to connect the air inlet filter head 2, and the other end of the air extraction pipe 502 is installed with an air suction head 509, and the mobile air extraction pipe 502 is used to extract air from different positions. It should be noted that in the embodiment of the present invention, when it is necessary to extract air from different positions, the air suction head 509 is pulled to extract the air extraction pipe 502, wherein when the air extraction pipe 502 is stored in the reel 501, a principle similar to a tape measure is adopted to help achieve automatic reeling.

[0055] More specifically, a synchronous locking device 6 is installed on the fall-off protection device 4, and the synchronous locking device 6 is used to lock the fall-off protection device 4; the synchronous locking device 6 includes a synchronous locking frame 601, and the synchronous locking frame 601 is movably installed on the top inner wall of a protection box 401, and a locking groove 602 is provided on the top inner wall of the other protection box 401. The synchronous locking frame 601 moves up and is inserted into the locking groove 602 to lock the two protection boxes 401. It should be noted that in the embodiment of the present invention, when air is sucked through the exhaust pipe 502, the rotating rod 507 is rotated to drive the closed push plate 508 to rotate, so that the synchronous locking frame 601 is inserted into the locking groove 602, and the two protection boxes 401 are locked, so as to avoid the problem that air from other positions enters the detector body 1 while inhaling, causing inaccurate detection results.

[0056] For further information, please refer to the attached manual. Figure 3-8, a portable harmful gas detection device provided by an embodiment of the present invention, the fall-off protection device 4 also includes two driving round seats 410, and the two driving round seats 410 are both rotatably mounted on the mounting seat 3; in addition, a driving frame 411 is installed on the two driving round seats 410, and a push-pull frame 412 is installed in the two protection boxes 401, and a driving shaft 413 is installed on the two driving frames 411, and the two driving shafts 413 are movably mounted on the two push-pull frames 412. It should be noted that in the embodiment of the present invention, when the two driving round seats 410 are pushed to rotate, the two driving round seats 410 drive the two driving shafts 413, and then drive the two push-pull frames 412 to move, so that the two push-pull frames 412 drive the two protection boxes 401 to slide open at the same time, and the two driving shafts 413 slide on the two push-pull frames 412.

[0057] More specifically, in the embodiment of the present invention, a linkage push frame 406 is movably mounted on the mounting seat 3, and the linkage push frame 406 is movably mounted on two driving round seats 410; in addition, arc-shaped driving grooves 416 are movably mounted on the two driving round seats 410, and two driving blocks 417 are mounted on the linkage push frame 406, and the two driving blocks 417 are movably mounted in the two driving grooves 416. It should be noted that in the embodiment of the present invention, when the plug-in frame 403 is inserted into the driving slot 404, the linkage push frame 406 moves, and the movement of the linkage push frame 406 drives the two driving blocks 417 to move, and the two driving blocks 417 move in the two driving grooves 416, thereby driving the two driving round seats 410 to rotate, and the two driving round seats 410 rotate to drive the two driving shafts 413, and then drive the two push-pull frames 412 to move, so that the two push-pull frames 412 drive the two protection boxes 401 to slide open at the same time.

[0058] Please continue to refer to the instruction manual Figure 3-8 , further specifically, in the embodiment of the present invention, a drive slot 404 and a connection slot 405 are provided on the socket 402, and the socket frame 403 is plugged into the drive slot 404;

[0059] In addition, one side of the linkage push frame 406 extends into the drive slot 404 and is installed with an arc-shaped clamp 407, and a friction pad 408 is installed on the plug-in frame 403, and the arc-shaped clamp 407 is clamped on the friction pad 408; in addition, a support spring 409 is installed on the arc-shaped clamp 407, and the other end of the support spring 409 is installed on the mounting seat 3. It should be noted that in the embodiment of the present invention, when the detector body 1 is used for detection, the mobile mounting seat 3 inserts the plug-in seat 402 on the plug-in frame 403, and the plug-in frame 403 is inserted into the drive slot 404, so that the plug-in frame 403 squeezes the arc-shaped clamp 407, and the arc-shaped clamp 407 is squeezed to drive the linkage push frame 406 to move, and drives the support spring 409 to be stressed, and finally the two protection boxes 401 slide open at the same time, so that the detector body 1 is exposed for easy use.

[0060] Refer to the instruction manual Figure 3-8 , more specifically, in the embodiment of the present invention, one side of the mounting seat 3 is provided with two sliding grooves 414, and the two protection boxes 401 are respectively slidably mounted in the two sliding grooves 414; in addition, return springs 415 are installed on the inner walls on both sides of the sliding grooves 414, and the other ends of the two return springs 415 are respectively mounted on the two protection boxes 401. It should be noted that in the embodiment of the present invention, when the protection box 501 moves, it slides horizontally in the sliding groove 414 and drives the return spring 415 to be stressed, so under the reaction force of the return spring 415, the protection box 401 can be reset.

[0061] For further information, please refer to the attached manual. Figure 9-10 , the embodiment of the present invention provides a portable harmful gas detection device, the auxiliary exhaust device 5 also includes a transfer box 503, the transfer box 503 is installed on a protection box 401, and the exhaust pipe 502 is connected to the transfer box 503; the transfer box 503 is slidably sleeved with a connecting box 504, and the connecting box 504 is adapted to the air intake filter head 2. It should be noted that in the embodiment of the present invention, when the connecting box 504 is inserted into the air intake filter head 2, the detector body 1 is exhausted, so that the outside air enters the exhaust pipe 502 through the suction head 509, and then enters the transfer box 503 and the connecting box 504 in turn through the exhaust pipe 502, and finally enters the detector body 1 for detection.

[0062] More specifically, in the embodiment of the present invention, a plug hole 506 is provided on the bottom side of the connecting box 504, and the connecting box 504 is plugged into the air intake filter head 2 through the plug hole 506; in addition, a sealing sleeve 510 is sleeved on the adapter box 503, and the sealing sleeve 510 contacts the inner wall of the connecting box 504, and a push-up spring 505 is installed on the sealing sleeve 510, and the top end of the push-up spring 505 is installed on the top inner wall of the connecting box 504. It should be noted that in the embodiment of the present invention, the rotating rod 507 is rotated so that the rotating rod 507 drives the closed push plate 508 to rotate, and at this time, the closed push plate 508 no longer squeezes the connecting box 504, and then under the rebound force of the push-up spring 505, the connecting box 504 moves downward and is plugged into the air intake filter head 2 through the plug hole 506, so that the air intake filter head 2 is evacuated through the connecting box 504 and the adapter box 503, thereby realizing various types of measurements.

[0063] Please continue to refer to the instruction manual Figure 9-10 , more specifically, in the embodiment of the present invention, a closed push plate 508 is provided in the protection box 401, and the closed push plate 508 is used to push the connecting box 504 upward and close the air intake filter head 2; in addition, a rotating rod 507 is rotatably installed on the protection box 401, and the rotating rod 507 is rotated to drive the closed push plate 508 to rotate. It should be noted that in the embodiment of the present invention, when the suction head 509 needs to be used for suction, the rotating rod 507 is rotated so that the rotating rod 507 drives the closed push plate 508 to rotate. At this time, the closed push plate 508 no longer squeezes the connecting box 504, and the purpose of automatically inserting the connecting box 504 into the air intake filter head 2 is achieved.

[0064] Please refer to the instruction manual Figure 11-13 Specifically, in the embodiment of the present invention, the synchronous locking device 6 further includes a pressing seat 605, which is mounted on the closed push plate 508. The closed push plate 508 rotates through the pressing seat 605 to push the synchronous locking frame 601 to move upward. It should be noted that in the embodiment of the present invention, when the rotating rod 507 drives the closed push plate 508 to rotate and unfold, the closed push plate 508 rotates through the pressing seat 605 to push the synchronous locking frame 601 to move upward, thereby automatically locking the two protection boxes 401.

[0065] Please continue to refer to the instruction manual Figure 11-13, more specifically, in the embodiment of the present invention, a lifting slot 603 is provided on the inner wall of the top side of a protection box 401, and the synchronous locking frame 601 is movably installed in the lifting slot 603; a return spring 604 is installed on the inner wall of the top side of the lifting slot 603, and the bottom end of the return spring 604 is installed on the top side of the synchronous locking frame 601, and the return spring 604 is used to drive the synchronous locking frame 601 to reset. It should be noted that in the embodiment of the present invention, when the synchronous locking frame 601 moves, it moves vertically in the lifting slot 603, and at the same time drives the return spring 604 to contract, so when the extrusion seat 605 no longer squeezes the synchronous locking frame 601, the return force of the return spring 604 can help the synchronous locking frame 601 to automatically reset, without affecting the normal use of the detector body 1.

[0066] In summary, the working principle of a portable harmful gas detection device provided by an embodiment of the present invention is:

[0067] When the detector body 1 is used for testing, the worker can wear it on the worker's helmet, waist, arm or other required position through the elastic band 10, so that the position of the plug-in frame 403 is fixed, and then the mounting seat 3 is moved to insert the plug-in seat 402 on the plug-in frame 403, and the plug-in frame 403 is inserted into the drive slot 404, so that the plug-in frame 403 squeezes the arc clamp 407, and the arc clamp 407 is squeezed to drive the linkage push frame 406 to move, and drive the support spring 409 to be stressed, and the linkage push frame 406 moves to drive the two drive blocks 417 to move, and the two drive blocks 417 are in the two drive slots. The movable groove 416 moves, thereby driving the two driving round seats 410 to rotate. The rotation of the two driving round seats 410 drives the two driving shafts 413, and then drives the two push-pull frames 412 to move, so that the two push-pull frames 412 drive the two protection boxes 401 to slide open at the same time, thereby exposing the detector body 1; similarly, if the protection box 401 is hit and falls during the process of workers moving or climbing up and down, the plug-in seat 402 is separated from the plug-in frame 403. At this time, under the rebound force of the support spring 409, the two protection boxes 401 are reset to protect the detector body 1 and avoid damage;

[0068] Furthermore, when the suction head 509 is needed to perform suction, the plug-in frame 403 is inserted into the connecting slot 405, so that the detector body 1 is stored in the two protection boxes 401, and the suction head 509 is pulled to pull out the suction pipe 502. When the suction pipe 502 is stored in the winding drum 501, a principle similar to a tape measure can be used to help achieve automatic winding. At the same time, the rotating rod 507 is rotated so that the rotating rod 507 drives the closed push plate 508 to rotate. At this time, the closed push plate 508 no longer squeezes the connecting box 504, and then under the rebound force of the push-open spring 505, the connecting box 504 moves downward and is inserted into the air intake filter head 2 through the plug-in hole 506, so that the air intake filter head 2 is exhausted through the connecting box 504 and the adapter box 503, thereby realizing various types of measurement.

[0069] Furthermore, when the rotating rod 507 drives the closed push plate 508 to rotate, the closed push plate 508 drives the extrusion seat 605 to move, so that the extrusion seat 605 drives the synchronous locking frame 601 to move upward, and the synchronous locking frame 601 moves upward in the lifting groove 603 and squeezes the return spring 604, so that the synchronous locking frame 601 is inserted into the locking groove 602, and the two protection boxes 401 are locked, so as to prevent air from other positions from entering the detector body 1 while inhaling, causing inaccurate detection results.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable harmful gas detection device, characterized in that: It includes a detector body, the detector body is provided with a display screen, a plurality of buttons and a charging port for charging, one side of the detector body is also provided with an elastic strap for binding, the other side of the detector body is provided with an alarm light and an alarm buzzer, and the top side of the detector body is installed with an air intake filter head for inhaling and filtering air; A mounting seat is provided on one side of the detector body, the detector body is inserted into the mounting seat, a fall-off protection device is installed on the mounting seat, and the fall-off protection device is used to protect the detector body; the fall-off protection device includes two protection boxes, both of which are slidably installed in the mounting seat, a plug-in seat is installed on one side of the mounting seat, a plug-in frame is plugged into the plug-in seat, and the elastic band passes through the plug-in frame; It also includes an auxiliary air extraction device, which is installed on the fall-off protection device and is used to extract air from different positions; the auxiliary air extraction device includes a reel, which is installed on one side of the mounting seat, and an air extraction pipe is rolled up in the reel, one end of the air extraction pipe is used to connect the air inlet filter head, and the other end of the air extraction pipe is installed with an air suction head, and the air extraction pipe is moved to extract air from different positions; A synchronous locking device is installed on the fall-off protection device, and the synchronous locking device is used to lock the fall-off protection device; the synchronous locking device includes a synchronous locking frame, and the synchronous locking frame is movably installed on the top inner wall of one of the protection boxes, and a locking groove is provided on the top inner wall of the other protection box. The synchronous locking frame moves up and is inserted into the locking groove to lock the two protection boxes.

2. A portable harmful gas detection device according to claim 1, characterized in that: The fall-off protection device further comprises two driving round seats, and the two driving round seats are both rotatably mounted on the mounting seat; The two driving round seats are both equipped with driving frames, the two protection boxes are both equipped with push-pull frames, the two driving frames are both equipped with driving shafts, and the two driving shafts are respectively and movably equipped on the two push-pull frames.

3. A portable harmful gas detection device according to claim 2, characterized in that: A linkage push frame is movably mounted on the mounting seat, and the linkage push frame is movably mounted on the two driving round seats; The two driving round seats are both movably mounted with arc-shaped driving grooves, and the linkage push frame is mounted with two driving blocks, which are movably mounted in the two driving grooves respectively.

4. A portable harmful gas detection device according to claim 3, characterized in that: The socket is provided with a driving slot and a connecting slot, and the socket frame is plugged into the driving slot; One side of the linkage push frame extends into the driving slot and is installed with an arc-shaped clamp, a friction pad is installed on the plug-in frame, and the arc-shaped clamp is clamped on the friction pad; A support spring is installed on the arc-shaped clamping head, and the other end of the support spring is installed on the mounting seat.

5. A portable harmful gas detection device according to claim 4, characterized in that: Two sliding grooves are provided on one side of the mounting seat, and the two protection boxes are slidably mounted in the two sliding grooves respectively; Reset springs are installed on both inner walls of the sliding groove, and the other ends of the two reset springs are installed on the two protection boxes respectively.

6. A portable harmful gas detection device according to claim 1, characterized in that: The auxiliary air extraction device further comprises a transfer box, the transfer box is mounted on one of the protection boxes, and the air extraction pipe is connected to the transfer box; A connecting box is slidably sleeved on the adapter box, and the connecting box is adapted to the air intake filter head.

7. A portable harmful gas detection device according to claim 6, characterized in that: The bottom side of the connecting box is provided with a plug hole, and the connecting box is plugged into the air intake filter head through the plug hole; A sealing sleeve is sleeved on the transfer box, the sealing sleeve contacts the inner wall of the connecting box, a push-up spring is installed on the sealing sleeve, and the top end of the push-up spring is installed on the top inner wall of the connecting box.

8. A portable harmful gas detection device according to claim 7, characterized in that: A closed push plate is provided in the protection box, and the closed push plate is used to push the connecting box upward and close the air intake filter head; A rotating rod is rotatably mounted on the protection box, and the rotating rod is rotated to drive the closed push plate to rotate.

9. A portable harmful gas detection device according to claim 8, characterized in that: The synchronous locking device also includes a pressing seat, which is installed on the closed push plate. The closed push plate rotates through the pressing seat to push the synchronous locking frame to move upward.

10. A portable harmful gas detection device according to claim 9, characterized in that: A lifting slot is provided on the top inner wall of the protection box, and the synchronous locking frame is movably installed in the lifting slot; A return spring is installed on the inner wall of the top side of the lifting slot, and the bottom end of the return spring is installed on the top side of the synchronous locking frame. The return spring is used to drive the synchronous locking frame to reset.

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