CN221100676U - Methane oxygen detector convenient to carry - Google Patents

Abstract

The utility model relates to the technical field of gas alarms and discloses a methane oxygen detector convenient to carry, which comprises a main body, wherein the front surface of the main body is connected with a functional key, the front surface of the main body is connected with a transparent plate, the left side and the right side of the main body are both connected with a lampshade, the inside of the main body is connected with a plurality of mounting columns, and the plurality of mounting columns are distributed at equal intervals. When the top of the instrument is impacted, the spring at the bottom of the guide post can generate a reaction force to offset the impact force caused by the impact, and when the protection plate moves downwards, the bottom of the protection plate can prop against the arc plate to enable two sides of the arc plate to expand outwards, then the moving plates at two sides of the arc plate are also transmitted to the protection plate through the arc plate to offset the impact force by the reaction force generated by the spring, so that accidental falling is avoided, or the risk of being impacted by objects such as flying stones, broken stones and the like in a mine tunnel is avoided, the protection of equipment is improved, and the risk of equipment damage is reduced.

Description

Methane oxygen detector convenient to carry

Technical Field

The utility model relates to the technical field of gas alarms, in particular to a portable methane-oxygen detector.

Background

The methane detector is an intrinsically safe device capable of continuously detecting methane concentration or methane concentration. The device is suitable for places such as explosion prevention, methane leakage emergency, underground pipelines or mines, and the like, can effectively ensure that the life safety of staff is not affected, production equipment is not lost, the environment of equipment work is complex when a detector detects, the existing instrument is inconvenient to carry the instrument when detecting, and the risk that objects such as broken stones are impacted and accidentally dropped can also exist when detecting in a mine tunnel, so that the normal work of the instrument is affected by damage to the instrument.

Disclosure of utility model

The utility model aims to provide a methane oxygen detector convenient to carry, so as to solve the problems in the background technology.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a portable methane oxygen detector which comprises a main body, wherein the front surface of the main body is connected with a functional key, the front surface of the main body is connected with a transparent plate, the left side and the right side of the main body are both connected with a lampshade, the inside of the main body is connected with a plurality of mounting columns which are distributed at equal intervals, the inner walls of the left side and the right side of the main body are both connected with a hollow frame, the top of the main body is provided with two through holes which are distributed at equal intervals;

The protection mechanism comprises a guide post, the guide post is slidably connected in the through hole, the bottom of the guide post is connected with a spring, one end of the spring, which is far away from the guide post, is connected with the inner wall of the bottom of the hollow frame, one end of the guide post, which is far away from the spring, is connected with a protection plate, the top of the protection plate is connected with a sleeve, and the bottom of the sleeve is connected with a connecting plate;

detection mechanism, detection mechanism include bolted connection at the mainboard of erection column back wall, and one side that the mainboard is close to the main part is connected with the battery, and one side that the mainboard is close to the battery is connected with the display screen, and the left side and the right side of mainboard all are connected with the display lamp, and the one end that the mainboard was kept away from to the display lamp is pegged graft in the inside of lamp shade, and one side that the mainboard is close to the main part is connected with the closing plate, and one side that the mainboard is close to the main part is connected with bee calling organ.

Further, the through-hole has been seted up to one side that the mounting panel was kept away from to the fixing base, and the inside sliding connection of through-hole has the gag lever post, and one side that the gag lever post is close to the mounting panel is connected with the limiting plate, and limiting plate sliding connection is in the inside of square groove, and one side that the limiting plate is close to the gag lever post is connected with two springs, and two springs use the gag lever post as central symmetry distribution, and one side that the limiting plate kept away from the gag lever post is connected with the sector plate.

Further, the back wall of main part is provided with wears the mechanism, wears the mechanism and includes bolted connection at the back lid of erection column back wall, and one side that the main part was kept away from to the back lid is connected with the mounting panel, and the top of mounting panel rotates and is connected with the connecting block, and the one end that the connecting block is close to the back lid is connected with the pinion rack, and one side that the connecting block was kept away from the pinion rack is connected with the watchband, and a plurality of slotted hole has been seted up to the surface of watchband, and the one end that the connecting block was kept away from to the mounting panel is connected with the fixing base, and square groove has been seted up to the inside of fixing base.

Further, one side of the rear cover, which is far away from the mounting plate, is provided with an air inlet mechanism, the air inlet mechanism comprises a sealing cavity connected to the front surface of the main board, the rear wall of the sealing cavity is connected with a sensor, the rear wall of the sealing cavity is connected with a heating plate, and the top of the sealing cavity is inserted with an air duct.

Further, one end of the air duct, which is far away from the sealing cavity, is inserted into the sleeve, a plurality of air holes are formed in the outer surface of the air duct, one end of the air duct, which is close to the sealing cavity, is connected with a shunt pipe, and one side of the shunt pipe, which is far away from the air duct, is connected with a filter element in a threaded manner.

Further, one side that the main part is close to the connecting plate is provided with assist mechanism, and assist mechanism is including connecting the auxiliary box at the main part top, and the middle part of auxiliary box is connected with the baffle, and the sliding tray has been seted up to one side that the auxiliary box is close to the back lid, and the right side of sliding tray is connected with the spring post, and T type groove has been seted up in the left side of sliding tray, and the surface sliding connection of spring post has the sliding plate.

Further, the top of sliding plate is connected with the bottom of connecting plate, and the one end that the spring post was kept away from to the sliding plate is connected with T shaped plate, and T shaped plate sliding connection is in the inside of T type groove, and rectangular channel has been seted up at the middle part of sliding plate, and peg graft in the inside of rectangular channel has the dead lever, and the dead lever is close to the one end of back lid and is connected with the flange, and one side that the dead lever was kept away from to the flange is connected with the rotation post, and a plurality of tooth has been seted up to one side that the rotation post kept away from the flange, and a plurality of tooth uses the rotation post as central circumference array.

Further, tooth and pinion rack mesh, the spout has all been connected with on one side that the watchband was kept away from to the baffle, and the left side and the right side of spout all are connected with the spring, and the one end that the auxiliary tank was kept away from to the spring is connected with the movable plate, is provided with the gasbag between the movable plate, and the gasbag cup joints in the inside of spout, and one side that the movable plate kept away from the spring is connected with the arc, and the bottom of gasbag is connected with the pipeline, and one side that the pipeline kept away from the gasbag runs through the inside in sealed chamber.

The utility model has the following beneficial effects:

(1) When the top of the instrument is impacted, the protection plate can protect the instrument and move downwards in the hollow frame through the guide post, the spring at the bottom of the guide post can generate a reaction force to offset impact force caused by the impact, and when the protection plate moves downwards, the bottom of the protection plate can prop against the arc plate, so that two sides of the arc plate are outwards expanded, then the moving plates at two sides of the arc plate are also transmitted to the protection plate through the arc plate by the reaction force generated by the spring to offset the impact force by the arc plate, so that accidental falling is avoided, or the risk of being impacted by objects such as flying stones, broken stones and the like in a mine is improved, the protection of equipment is improved, and the risk of equipment damage is reduced.

(2) According to the utility model, the connecting block at the top of the watchband rotates at the top of the mounting plate, then the toothed plate at the front of the connecting block rotates, the toothed plate rotates and simultaneously drives the mutually meshed rotating columns to rotate, then the bottom end of the watchband is inserted into a gap between the fixing seat and the mounting plate, the bottom end of the watchband firstly moves backwards against the sector plate, when the watchband is adjusted to a proper position, the spring on the rear wall of the limiting plate slides forwards against the inside of the sliding groove, then the sector plate is inserted into the groove on the surface of the watchband, the palm is bound and fixed through the watchband, and meanwhile, the arms of a user can be bound and fixed through the watchband, so that the watchband is convenient to carry.

(3) When the connecting block rotates, the rotating column rotates with the mutually meshed rotating columns, the rotating column firstly moves in the rectangular groove through the rotation of the convex plate with the fixing rod, the convex plate rotates to enable the fixing rod to generate a force for moving up and down through the eccentric effect, when the rotating column rotates clockwise, the fixing rod generates a force for moving down in the rectangular groove, the sliding plate moves down on the outer surface of the spring column, the connecting plate at the top moves synchronously, at the moment, the protection plate moves together due to the downward pulling force of the connecting plate, then the sleeve at the moment breaks away from the air holes on the surface of the air duct, and air enters the inside of the instrument to detect the air.

(4) According to the utility model, after detection, the watchband is loosened, so that the watchband returns to the original position, the spring on the outer surface of the spring column props against the sliding plate to enable the sliding plate to return to the original position, then the protection plate is lifted to the top by the upward pushing force of the connecting plate and the upward elastic force of the spring at the bottom of the guide column, the protection plate is separated from the arc-shaped plate, the moving plate can slide relatively in the sliding groove, then the air bag is extruded, at the moment, the air bag can release the gas in the air bag to the inside of the sealing cavity through the pipeline by the extrusion force of the moving plate, the pipeline opening is directly opposite to the sensor, at the moment, the gas can clear up the moisture, dust and other impurities on the surface of the sensor, damage or pollution caused by the influence of the impurities on the sensor is avoided, and the detection result is influenced, so that the normal operation of the sensor is ensured. Then the blown-off moisture can be blown onto the surface of the heating plate, and the effect of dehumidifying the inside of the sealed cavity is achieved by utilizing the principle that the heating plate heats after being electrified.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an overall cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the back of the body of the present utility model;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is an enlarged view of FIG. 3 at B;

FIG. 6 is a schematic diagram of a detection mechanism according to the present utility model;

FIG. 7 is a schematic view of an auxiliary mechanism of the present utility model;

Fig. 8 is a schematic top view of the auxiliary mechanism of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

In the figure: 1. a main body; 101. a function key; 102. a transparent plate; 103. a lamp shade; 104. a mounting column; 105. a hollow frame; 2. a protective mechanism; 201. a guide post; 202. a protection plate; 203. a sleeve; 204. a connecting plate; 3. a wearing mechanism; 301. a rear cover; 302. a mounting plate; 303. a connecting block; 304. a toothed plate; 305. watchband; 306. a fixing seat; 307. a limit rod; 308. a limiting plate; 309. a sector plate; 4. an air inlet mechanism; 401. sealing the cavity; 402. a sensor; 403. a heating plate; 404. an air duct; 405. a shunt; 406. a filter element; 5. a detection mechanism; 501. a main board; 502. a battery; 503. a display screen; 504. a display lamp; 505. a buzzer; 506. a sealing plate; 6. an auxiliary mechanism; 601. an auxiliary box; 602. a sliding groove; 603. a spring post; 604. a sliding plate; 605. rectangular grooves; 606. a T-shaped plate; 607. a fixed rod; 608. a convex plate; 609. rotating the column; 610. an air bag; 611. a moving plate; 612. an arc-shaped plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-8, the utility model discloses a portable methane oxygen detector, which comprises a main body 1, wherein the front surface of the main body 1 is connected with a function key 101, the front surface of the main body 1 is connected with a transparent plate 102, the left side and the right side of the main body 1 are both connected with a lampshade 103, the inside of the main body 1 is connected with a plurality of mounting columns 104, the plurality of mounting columns 104 are distributed equidistantly, the left side and the right side inner wall of the main body 1 are both connected with a hollow frame 105, two through holes are formed in the top of the main body 1, and the two through holes are distributed equidistantly, and the portable methane oxygen detector further comprises;

The protection mechanism 2 comprises a guide post 201, wherein the guide post 201 is slidably connected in the through hole, a spring is connected to the bottom of the guide post 201, one end, away from the guide post 201, of the spring is connected to the inner wall of the bottom of the hollow frame 105, one end, away from the spring, of the guide post 201 is connected with a protection plate 202, the top of the protection plate 202 is connected with a sleeve 203, and the bottom of the sleeve 203 is connected with a connecting plate 204;

Detection mechanism 5, detection mechanism 5 includes the mainboard 501 of bolted connection in main part 1, one side that mainboard 501 is close to main part 1 is connected with battery 502, one side that mainboard 501 is close to battery 502 is connected with display screen 503, the left side and the right side of mainboard 501 all are connected with display lamp 504, the one end that mainboard 501 was kept away from to display lamp 504 is pegged graft in the inside of lamp shade 103, one side that mainboard 501 is close to main part 1 is connected with closing plate 506, one side that mainboard 501 is close to main part 1 is connected with buzzer 505, one side that back cover 301 kept away from mounting panel 302 is provided with air inlet mechanism 4, air inlet mechanism 4 is including connecting at the positive sealed chamber 401 of mainboard 501, the back wall of sealed chamber 401 is connected with sensor 402, the back wall of sealed chamber 401 is connected with hot plate 403, the top of sealed chamber 401 is pegged graft and is had air duct 404, the one end that sealed chamber 401 was kept away from to air duct 404 is pegged graft in the inside of sleeve 203, the surface of air duct 404 has been seted up a plurality of gas pocket, the one end that air duct 404 is close to sealed chamber 401 is connected with air duct 405, one side that the air duct 404 is kept away from the shunt tube 405 has the shunt tube 406, one side that the air duct 404 is kept away from the shunt tube 405.

When the novel gas sensor is used, the watchband 305 is loosened, the watchband 305 returns to the original position, at the moment, the spring on the outer surface of the spring column 603 can prop against the sliding plate 604 to enable the sliding plate 604 to slide to the top of the spring column 603 to return to the original position, then the protection plate 202 at the moment is lifted to the top by the upward pushing force of the connecting plate 204 and the upward elastic force of the spring at the bottom of the guide column 201, at the moment, the protection plate 202 is separated from the arc plate 612, then the moving plate 611 can slide relatively in the sliding groove and then squeeze the air bag 610, at the moment, the air bag 610 is squeezed by the moving plate 611 to release gas in the air bag into the sealing cavity 401 through the pipeline, the pipeline port is directly opposite to the sensor 402, at the moment, the air can clean the moisture, dust and other impurities on the surface of the sensor 402, and the like, so that the damage or pollution caused by the influence of the sensor caused by the influence of the impurities is avoided, and the detection result is influenced, and the normal operation of the sensor is ensured. Then, the blown-off moisture is blown onto the surface of the heating plate 403, and the effect of dehumidifying the inside of the device is achieved by utilizing the principle that the electric heating plate generates heat after being electrified.

Example 2

Referring to fig. 1-8, the rear wall of the main body 1 is provided with a wearing mechanism 3, the wearing mechanism 3 includes a rear cover 301 bolted to the rear wall of the mounting post 104, one side of the rear cover 301 away from the main body 1 is connected with a mounting plate 302, the top of the mounting plate 302 is rotatably connected with a connecting block 303, one end of the connecting block 303 close to the rear cover 301 is connected with a toothed plate 304, one side of the connecting block 303 away from the toothed plate 304 is connected with a watchband 305, the outer surface of the watchband 305 is provided with a plurality of slots, one end of the mounting plate 302 away from the connecting block 303 is connected with a fixing seat 306, and the inside of the fixing seat 306 is provided with square slots.

The main part 1 is close to one side of connecting plate 204 and is provided with assist mechanism 6, assist mechanism 6 is including connecting the auxiliary tank 601 at main part 1 top, the middle part of auxiliary tank 601 is connected with the baffle, slide groove 602 has been seted up to one side that auxiliary tank 601 is close to back lid 301, the right side of slide groove 602 is connected with spring post 603, T type groove has been seted up in the left side of slide groove 602, the surface sliding connection of spring post 603 has sliding plate 604, the top of sliding plate 604 is connected with the bottom of connecting plate 204, the one end that spring post 603 was kept away from to sliding plate 604 is connected with T shaped plate 606, T shaped plate 606 sliding connection is in the inside of T type groove, rectangular groove 605 has been seted up at the middle part of sliding plate 604.

The inside grafting of rectangular groove 605 has dead lever 607, the one end that dead lever 607 is close to back lid 301 is connected with boss 608, one side that boss 608 kept away from dead lever 607 is connected with rotates post 609, rotate post 609 and keep away from one side of boss 608 and seted up a plurality of tooth, a plurality of tooth uses rotation post 609 as central circumference array, tooth and pinion rack 304 mesh, the baffle has been kept away from one side of watchband 305 and has been seted up the sliding tray, the left side and the right side of sliding tray all are connected with the spring, the one end that the auxiliary tank 601 was kept away from to the spring is connected with movable plate 611, be provided with gasbag 610 between the movable plate 611, gasbag 610 cup joints in the inside of sliding tray, one side that the movable plate 611 kept away from the spring is connected with arc 612, the bottom of gasbag 610 is connected with the pipeline, one side that the pipeline kept away from gasbag 610 runs through the inside of sealed chamber 401.

In use, when the connecting block 303 rotates, the rotating columns 609 are meshed with each other, the rotating columns 609 rotate, meanwhile, the fixing rods 607 are moved in the rectangular grooves 605 through the rotation of the convex plates 608, the convex plates 608 rotate to enable the fixing rods 607 to generate a force for moving up and down through the eccentric action, when the rotating columns 609 rotate clockwise, the fixing rods 607 generate a force for moving down in the rectangular grooves 605, the sliding plates 604 move down on the outer surfaces of the spring columns 603, the sliding plates 604 move down synchronously with the connecting plates 204 at the top, at the moment, the protection plates 202 move together due to downward pressure of the connecting plates 204, then the sleeves 203 are separated from the ventilation holes on the surfaces of the air ducts 404, so that air enters the inside of the instrument, and the instrument works normally.

Firstly, the instrument is taken into the hand, then the watchband 305 is stirred, at this time, because the watchband 305 expands outwards and the toothed plate 304 at the top of the watchband 305 rotates at the top of the mounting plate 302, then the toothed plate 304 at the front of the connecting block 303 rotates along with the rotation, the toothed plate 304 rotates and carries the mutually meshed rotating columns 609, then the bottom end of the watchband 305 is inserted into a gap between the fixing seat 306 and the mounting plate 302, the bottom end of the watchband 305 firstly moves backwards against the sector plate 309, and when the watchband is adjusted to a proper position, the spring on the rear wall of the limiting plate 308 slides forwards in the sliding groove against the limiting plate 308;

Then the sector plate 309 is inserted into the groove on the surface of the watchband 305, the palm is bound and fixed by the watchband, meanwhile, the watchband is utilized to bind and fix the arm in use, the hand is convenient to carry, when the top of an instrument is impacted, the protection plate 202 protects the instrument and moves downwards in the hollow frame 105 through the guide post 201, at the moment, the spring at the bottom of the guide post 201 can generate a reaction force to generate impact force caused by bottom line impact, and when the protection plate 202 moves downwards, the bottom of the protection plate 202 props against the arc plate, so that the two sides of the arc plate are outwards expanded;

Then, the moving plates 611 on two sides of the arc plate are also subjected to reaction force generated by the force of the springs and are transmitted to the protection plate 202 through the arc plate to counteract the impact force so as to avoid accidental falling, or the falling impact of objects such as flying stones, broken stones and the like is generated in a mine cavity, which may damage the instrument or affect the normal operation of the instrument, then when the connecting block 303 rotates, the rotating columns 609 are rotated with the mutually meshed rotating columns 609, the rotating columns 609 firstly move inside the rectangular grooves 605 through the rotation of the protruding plates 608 with the fixing rods 607, the protruding plates 608 rotate to enable the fixing rods 607 to generate an up-and-down moving force through the eccentric action, when the rotating columns 609 rotate clockwise, the fixing rods 607 generate a downward moving force inside the rectangular grooves 605 with the sliding plates 604 moving downwards on the outer surfaces of the spring columns 603, and when the sliding plates 604 move downwards with the top connecting plates 204 synchronously, and at the moment, the protection plates 202 move together due to the downward pressure of the connecting plates 204;

Then, the sleeve 203 is separated from the ventilation holes on the surface of the air duct 404, so that the air enters the instrument, the instrument works normally, at this time, a worker presses the function key 101 and sets the value of methane gas, then the air enters the shunt tube 405 from the ventilation holes formed on the outer surface of the air duct 404, dust is filtered once from the filter elements 406, the micro-particle filter screen adopted by the filter elements 406 can filter out solid particles, the filtered air overflows from the gaps of the filter elements 406, then the sensor 402 detects the air, the solid particles contained in the air are adsorbed on the surface of the micro-particle filter screen, after long-term use, the filter elements can be cleaned or replaced by a user for reuse, the purpose of filtering the solid particles is achieved, the work under a relatively poor condition is avoided, the blockage of the air diffusion holes of the instrument caused by accumulation of a large amount of the solid particles, and the instrument is beneficial to the normal detection of the air parameters of the instrument;

Meanwhile, the maintenance of later-stage instrument is convenient, thereby the practicability of the gas alarm instrument is improved, after detection, the watchband 305 is loosened at the moment, the watchband 305 returns to the original position, at the moment, the spring on the outer surface of the spring column 603 can prop against the sliding plate 604 to enable the sliding plate 604 to slide to the top of the spring column 603, then the protection plate 202 at the moment is enabled to rise to the top by the upward pushing force of the connecting plate 204 and the upward elastic force of the spring at the bottom of the guide column 201, at the moment, the protection plate 202 is separated from the arc plate 612, then the moving plate 611 can relatively slide in the sliding groove, then the air bag 610 is extruded, at the moment, the air bag 610 can release the internal gas into the sealing cavity 401 through the pipeline, the pipeline port is directly opposite to the sensor 402, at the moment, the gas can clear up the moisture, dust and other impurities on the surface of the sensor 402, the influence of the sensor caused by the impurities or pollution and influence on the detection result is avoided, and the normal operation of the sensor is ensured. Then, the blown-off moisture is blown onto the surface of the heating plate 403, and the effect of dehumidifying the inside of the device is achieved by utilizing the principle that the electric heating plate generates heat after being electrified.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (8)

1. The utility model provides a methane oxygen detector convenient to carry, includes main part (1), the front of main part (1) is connected with function key (101), the front of main part (1) is connected with transparent plate (102), the left side and the right side of main part (1) all are connected with lamp shade (103), the internal connection of main part (1) has a plurality of erection column (104), a plurality of erection column (104) are equidistant distribution, the left side and the right side inner wall of main part (1) all are connected with hollow frame (105), two through-holes have been seted up at the top of main part (1), and two the through-holes are equidistant distribution, its characterized in that still includes;

The protection mechanism (2), protection mechanism (2) includes guide post (201), guide post (201) sliding connection is in the inside of through-hole, the bottom of guide post (201) is connected with the spring, the one end that guide post (201) was kept away from to the spring is connected at the bottom inner wall of hollow frame (105), the one end that guide post (201) kept away from the spring is connected with guard plate (202), the top of guard plate (202) is connected with sleeve (203), the bottom of sleeve (203) is connected with connecting plate (204);

Detection mechanism (5), detection mechanism (5) include mainboard (501) of bolted connection at erection column (104) back wall, one side that mainboard (501) is close to main part (1) is connected with battery (502), one side that mainboard (501) is close to battery (502) is connected with display screen (503), the left side and the right side of mainboard (501) all are connected with display lamp (504), the one end that mainboard (501) was kept away from to display lamp (504) is pegged graft in the inside of lamp shade (103), one side that mainboard (501) is close to main part (1) is connected with closing plate (506), one side that mainboard (501) is close to main part (1) is connected with bee calling organ (505).

2. The portable methane oxygen detector according to claim 1, wherein: still include fixing base (306), the through-hole has been seted up to one side that mounting panel (302) was kept away from to fixing base (306), the inside sliding connection of through-hole has gag lever post (307), one side that gag lever post (307) is close to mounting panel (302) is connected with limiting plate (308), limiting plate (308) sliding connection is in the inside of square groove, one side that limiting plate (308) is close to gag lever post (307) is connected with two springs, two the spring uses gag lever post (307) as central symmetry distribution, one side that limiting plate (308) kept away from gag lever post (307) is connected with sector plate (309).

3. The portable methane oxygen detector according to claim 2, wherein: the utility model discloses a wear mechanism, including wearing mechanism (3), the back lid (301) of wearing mechanism (3) including bolted connection at erection column (104) back wall, one side that back lid (301) was kept away from main part (1) is connected with mounting panel (302), the top rotation of mounting panel (302) is connected with connecting block (303), one end that connecting block (303) is close to back lid (301) is connected with pinion rack (304), one side that pinion rack (304) was kept away from to connecting block (303) is connected with watchband (305), a plurality of slotted hole has been seted up to the surface of watchband (305), one end that connecting block (303) was kept away from to mounting panel (302) is connected with fixing base (306), square groove has been seted up to the inside of fixing base (306).

4. A portable methane oxygen detector according to claim 3, wherein: one side that back lid (301) kept away from mounting panel (302) is provided with air inlet mechanism (4), air inlet mechanism (4) are including connecting sealed chamber (401) in mainboard (501) front, the back wall of sealed chamber (401) is connected with sensor (402), the back wall of sealed chamber (401) is connected with hot plate (403), the top of sealed chamber (401) is pegged graft and is had air duct (404).

5. The portable methane oxygen detector according to claim 4, wherein: one end of the air duct (404) away from the sealing cavity (401) is inserted into the sleeve (203), a plurality of air holes are formed in the outer surface of the air duct (404), one end of the air duct (404) close to the sealing cavity (401) is connected with a shunt tube (405), and one side of the shunt tube (405) away from the air duct (404) is connected with a filter element (406) in a threaded manner.

6. The portable methane oxygen detector according to claim 5, wherein: one side that main part (1) is close to connecting plate (204) is provided with auxiliary mechanism (6), auxiliary mechanism (6) are including connecting auxiliary tank (601) at main part (1) top, the middle part of auxiliary tank (601) is connected with the baffle, sliding tray (602) have been seted up to one side that auxiliary tank (601) is close to back lid (301), the right side of sliding tray (602) is connected with spring post (603), T type groove has been seted up in the left side of sliding tray (602), the surface sliding connection of spring post (603) has sliding tray (604).

7. The portable methane oxygen detector according to claim 6, wherein: the top of sliding plate (604) is connected with the bottom of connecting plate (204), one end that spring post (603) was kept away from to sliding plate (604) is connected with T shaped plate (606), T shaped plate (606) sliding connection is in the inside of T type groove, rectangular channel (605) have been seted up at the middle part of sliding plate (604), peg graft in the inside of rectangular channel (605) has dead lever (607), the one end that dead lever (607) is close to back lid (301) is connected with flange (608), one side that dead lever (607) was kept away from to flange (608) is connected with rotates post (609), a plurality of tooth has been seted up to one side that flange (608) was kept away from to rotate post (609), and a plurality of tooth uses rotation post (609) as central circumference array.

8. The portable methane oxygen detector according to claim 7, wherein: tooth and pinion rack (304) mesh, the spout has been seted up to one side that watchband (305) was kept away from to the baffle, the left side and the right side of spout all are connected with the spring, the one end that auxiliary tank (601) was kept away from to the spring is connected with movable plate (611), be provided with gasbag (610) between movable plate (611), gasbag (610) cup joint in the inside of spout, one side that movable plate (611) kept away from the spring is connected with arc (612), the bottom of gasbag (610) is connected with the pipeline, one side that gasbag (610) was kept away from to the pipeline runs through the inside of sealed chamber (401).