Remote recognizable safety monitoring equipment for harmful gas in special working space

Abstract

The invention relates to the technical field of harmful gas monitoring, in particular to remote recognizable safety monitoring equipment for harmful gas in a special working space. Comprising a box body, a collecting barrel is fixed in the box body, a spiral shaft is concentrically and rotatably arranged in the collecting barrel, a screw rod is concentrically fixed on the spiral shaft and is in threaded connection with a cover plate, the cover plate blocks the open end of the collecting barrel, a lower plate is slidably arranged on the left side wall of the box body in the vertical direction, and the cover plate is connected with the lower plate through a lower connecting assembly. An open hole is formed in the left side wall of the box body above the lower plate, a lower filter screen is fixed in the open hole, an inner cylinder communicated with the open hole is fixed in the box body, the inner cylinder is communicated with the collecting cylinder through a first connecting pipe, an air extracting pump is fixed in the box body, the inlet end of the air extracting pump is communicated with the collecting cylinder, and the outlet end of the air extracting pump is communicated with a gas monitor. The equipment can monitor harmful gas in air above the box body, and the situation that the equipment is limited due to the fact that the equipment can only monitor air at a low position is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of harmful gas monitoring, and in particular to a remotely identifiable safety monitoring device for harmful gases in a special working space. Background Art

[0002] During the factory production process, some production processes will produce harmful gases. When it is necessary to repair equipment in the production process that produces harmful gases, it is necessary to monitor harmful gases near the equipment to be repaired. When repairing equipment, in order to ensure the safety of maintenance personnel, it is necessary to monitor the harmful gases in the air near the equipment in real time.

[0003] In the prior art, harmful gases in the air are monitored by gas monitoring devices, and the concentration changes of harmful gases in the air are monitored by the gas monitoring devices. However, during use, the existing gas monitoring devices are limited by their temporary placement and can only monitor the gas around their air inlet, but cannot monitor the air at surrounding high positions. As a result, the samples for air monitoring are too small and the concentration changes of harmful gases cannot be accurately reflected.

[0004] Some existing remotely identifiable safety monitoring equipment for harmful gases in special workspaces cannot filter impurities in the air, thereby reducing the service life and monitoring accuracy of the gas monitor. Summary of the invention

[0005] The technical problem to be solved by the present invention is a remotely identifiable safety monitoring device for harmful gases in special working spaces that can detect the air at high altitudes. The detection device can accurately reflect the solubility changes of harmful gases in the air near the equipment that needs maintenance, and can effectively remove impurities in the air during the monitoring process.

[0006] In order to achieve the above object, the technical solution provided by the present invention is:

[0007] A remotely identifiable safety monitoring device for harmful gases in a special working space comprises a box body, a door panel is hingedly connected to the front end of the box body, a collecting cylinder is fixed in the box body, a spiral shaft is coaxially arranged in the collecting cylinder, the left end of the collecting cylinder is open, a motor is fixed to the right end of the collecting cylinder, the output shaft of the motor is concentrically fixedly connected to the spiral shaft, a screw is concentrically fixed to the spiral shaft, the screw passes through a cover plate, the screw and the cover plate are threadedly connected, the cover plate blocks the open end of the collecting cylinder, the cover plate is slidably connected to the box body, the sliding direction of the cover plate is parallel to the axial direction of the screw, a lower plate is slidably arranged on the left side wall of the box body in the vertical direction, the lower plate is located outside the box body, the cover plate and the lower plate are connected by a lower connecting assembly, the lower plate can move upward when the cover plate is away from the collecting cylinder, an opening is provided on the left side wall of the box body above the lower plate, a The lower filter screen is flush with the outer side surface of the left side wall of the box body, an inner cylinder connected to the opening is fixed in the box body, the inner cylinder is connected to the collecting cylinder through a first connecting pipe, an air suction pump is fixed in the box body, the inlet end of the air suction pump is connected to the collecting cylinder, the outlet end of the air suction pump is connected to the gas monitor, the gas monitor is fixed in the box body, an upper plate is slidably arranged in the transverse direction of the upper end of the box body, the upper plate is connected to the driving assembly in the upper end of the box body, a through hole is opened on the top plate of the box body, the upper plate blocks the through hole, the upper end of the telescopic tube is located in the through hole, an upper filter screen is fixed in the upper end of the telescopic tube, the upper filter screen is in sliding contact with the lower end surface of the upper plate, the lower end of the telescopic tube is connected to the collecting cylinder, the upper part of the telescopic tube is connected to the upper plate through the upper connecting assembly, and the upper part of the telescopic tube can be delayed to move upward through the upper connecting piece during the movement of the upper plate to the left.

[0008] Specifically, a collection box is fixed in the box below the opening end of the collection cylinder.

[0009] Specifically, an arc-shaped electrostatic plate is inlaid and fixed on the inner wall of the collecting tube, the outer edge of the spiral shaft contacts the inner edge of the electrostatic plate, the motor, the electrostatic plate and the controller are electrically connected, and the controller is fixed on the box body.

[0010] Specifically, a vertical second slide groove is opened on the left side wall of the box body, and a first slider is slidably clamped in the second slide groove, and the first slider is fixedly connected to the lower plate; the lower connecting assembly includes a lower connecting rod with an upward tilted left end, one end of the lower connecting rod is rotatably connected to the first slider, and the other end of the lower connecting rod is rotatably connected to the fixed plate, and the fixed plate is fixedly connected to the cover plate.

[0011] Specifically, a locking rod is fixed to the front end of the cover plate, the locking rod includes a straight portion and a longitudinal portion, the longitudinal portion of the locking rod is fixedly connected to the cover plate, the straight portion of the locking rod passes through the hole of the lock ear, and the lock ear is fixedly connected to the door panel.

[0012] Specifically, the driving assembly includes a transversely arranged electric push rod, the left end of the electric push rod is fixedly connected to the box body through a fixed block, a transverse fourth slide groove is opened on the top plate of the box body, a third slider is slidably arranged in the fourth slide groove, the right end of the electric push rod is fixedly connected to the third slider, the upper end of the third slider is fixedly connected to the upper plate, a second slider is slidably clamped in the fourth slide groove, the upper end of the second slider is slidably arranged in the third slide groove at the lower end of the upper plate, the length direction of the third slide groove is parallel to the length direction of the fourth slide groove, the second slider is tightly against the right slot wall of the fourth slide groove, the second slider is tightly against the left slot wall of the third slide groove, the third slider is connected to the second slider through a spring, and the spring is compressed.

[0013] Specifically, the telescopic tube includes two concentrically arranged second connecting tubes, the upper filter is fixed in the upper end of the upper second connecting tube, the lower second connecting tube is fixedly connected to the collecting tube, a bellows is arranged between the two second connecting tubes, and the bellows connects the two second connecting tubes; the upper connecting assembly includes an upper connecting rod, the upper end of the upper connecting rod is inclined to the left direction, the lower end of the upper connecting rod is rotatably connected to the ear plate fixed on the upper second connecting tube, and the upper end of the upper connecting rod is rotatably connected to the second slider.

[0014] Specifically, a guide plate is fixed inside the upper end of the box body, a slide bar is fixed on the upper second connecting pipe, and the slide bar is slidably connected to the guide plate.

[0015] Specifically, the electric push rod, the gas monitor and the controller are electrically connected, and the controller is communicatively connected to the handheld terminal.

[0016] Specifically, a first transverse sliding groove is provided on the rear side wall of the box body, a guide block is slidably arranged in the first sliding groove, and the guide block is fixedly connected to the cover plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the upper plate of the device moves to the left, the upper end of the telescopic tube can be extended upward with a delay. After the upper end of the telescopic tube moves upward, it can monitor the harmful gases in the air above the box, so as to avoid the device being limited to monitoring the air at low places.

[0019] 2. When the cover plate moves away from the collecting tube, the lower plate moves upward and scrapes off the dust on the lower filter, which can ensure the air intake of the lower filter during subsequent use. When the upper plate moves to the right, it can scrape off the dust on the upper filter, which can ensure the air intake of the upper filter during subsequent use.

[0020] 3. After the air enters the collection tube, the electrostatic plate can adsorb impurities in the air, which can reduce the content of air impurities entering the gas monitor, thereby improving the accuracy of the monitoring results. Under the guidance of the spiral shaft, the air spirals in the collection tube, and under the action of centrifugal force, the impurities in the air can approach the electrostatic plate, which can improve the electrostatic plate's adsorption efficiency on impurities in the air.

[0021] 4. During the rotation of the spiral shaft, the impurities attached to the electrostatic plate can be scraped off and pushed out of the collection tube, and the impurities pushed out of the collection tube fall into the collection box.

[0022] 5. After the screw rotates, the cover plate moves away from the collection tube, the locking rod separates from the lock ear, and then the door panel can be opened to remove impurities in the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the device.

[0024] Figure 2 This is a schematic diagram of the door panel after opening.

[0025] Figure 3 A cross-sectional view of the box.

[0026] Figure 4 It is a schematic diagram of the separate structure of the collecting cylinder, spiral shaft and cover plate.

[0027] Figure 5 It is a front view of the internal structure of the box.

[0028] Figure 6 Schematic diagram of the connection between the telescopic tube and the collecting tube.

[0029] Figure 7 Schematic diagram of the lower plate.

[0030] Figure 8 A cross-sectional view of the collecting tube.

[0031] Fig. 9 for Figure 8 Magnified view of area A.

[0032] Fig.10 It is a schematic diagram when the upper end of the telescopic tube does not extend out of the box.

[0033] Fig.11 for Fig.10 Magnified view of area B.

[0034] Fig.12 It is a schematic diagram of the connection between the second slider, the third slider and the upper plate.

[0035] Fig.13 Schematic diagram of the connection between the guide plate and the slider.

[0036] 1. The names of the parts in the attached drawings are: 1. Box body; 2. Lower filter; 3. Lower plate; 4. Upper plate; 5. Door plate; 6. Cover plate; 7. Lock rod; 8. Collecting box; 9. Collecting tube; 10. Lock ear; 11. Vacuum pump; 12. First connecting pipe; 13. Gas monitor; 14. Second connecting pipe; 141. Bellows; 15. Electric push rod; 16. Screw; 17. Lower connecting rod; 18. Fixed plate; 19. First slide groove; 20. Guide block; 21. Electrostatic plate; 22. Fixed block; 23. Inner tube; 24. First slider; 25. Motor; 26. Slide bar; 27. Guide plate; 28. Ear plate; 29. ​​Upper connecting rod; 30. Second slider; 31. Third slider; 32. Second slide groove; 33. Spring; 34. Third slide groove; 35. Upper filter; 36. Screw shaft; 37. Fourth slide groove. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] like Figure 1-Figure 13 As shown, a remotely identifiable safety monitoring device for harmful gases in a special working space includes a box body 1, and a door panel 5 is hinged at the front end of the box body 1.

[0039] A collecting cylinder 9 is fixed in the box body 1 , and a spiral shaft 36 is coaxially rotatably arranged in the collecting cylinder 9 . The left end of the collecting cylinder 9 is open, and a motor 25 is fixed to the right end of the collecting cylinder 9 . The output shaft of the motor 25 is coaxially and fixedly connected with the spiral shaft 36 .

[0040] A screw rod 16 is coaxially fixed on the screw shaft 36, and the screw rod 16 penetrates the cover plate 6, and the screw rod 16 is threadedly connected to the cover plate 6. The cover plate 6 blocks the open end of the collecting barrel 9, and the cover plate 6 is slidably connected to the box body 1, and the sliding direction of the cover plate 6 is parallel to the axial direction of the screw rod 16. Specifically, a transverse first slide groove 19 is opened on the rear side wall of the box body 1, and a guide block 20 is slidably arranged in the first slide groove 19, and the guide block 20 is fixedly connected to the cover plate 6.

[0041] A collection box 8 is fixed in the box body 1 below the open end of the collection tube 9 .

[0042] An arc-shaped electrostatic plate 21 is embedded and fixed on the inner wall of the collecting tube 9 , the outer edge of the spiral shaft 36 contacts the inner edge of the electrostatic plate 21 , the motor 25 , the electrostatic plate 21 and the controller are electrically connected, and the controller is fixed on the box body 1 .

[0043] A lower plate 3 is slidably arranged on the left side wall of the box body 1 in the vertical direction, and the lower plate 3 is located outside the box body 1. Specifically, a vertical second slide groove 32 is provided on the left side wall of the box body 1, and a first slider 24 is slidably engaged in the second slide groove 32, and the first slider 24 is fixedly connected to the lower plate 3.

[0044] The cover plate 6 is connected to the lower plate 3 via a lower connecting assembly, and the lower plate 3 can move upward when the cover plate 6 is away from the collecting tube 9 .

[0045] A locking rod 7 is fixed to the front end of the cover plate 6 , and the locking rod 7 includes a straight portion and a longitudinal portion. The longitudinal portion of the locking rod 7 is fixedly connected to the cover plate 6 , and the straight portion of the locking rod 7 passes through the hole of the locking ear 10 , and the locking ear 10 is fixedly connected to the door panel 5 .

[0046] After the motor 25 is started by the controller, the motor 25 drives the spiral shaft 36 and the screw 16 to rotate. During the rotation of the screw 16, the cover plate 6 moves away from the collecting tube 9. During the process of the cover plate 6 moving away from the collecting tube 9, the locking rod 7 moves accordingly. When the locking rod 7 withdraws from the hole of the lock ear 10, the door panel 5 can be opened.

[0047] The lower connecting assembly includes a lower connecting rod 17 with an upwardly inclined left end. One end of the lower connecting rod 17 is rotatably connected to the first slider 24 , and the other end of the lower connecting rod 17 is rotatably connected to the fixing plate 18 . The fixing plate 18 is fixedly connected to the cover plate 6 .

[0048] An opening is provided on the left side wall of the box body 1 above the lower plate 3 , and a lower filter screen 2 is fixed in the opening. The lower filter screen 2 is flush with the outer side surface of the left side wall of the box body 1 .

[0049] An inner cylinder 23 connected to the opening is fixed in the box body 1, and the inner cylinder 23 is connected to the collecting cylinder 9 through a first connecting pipe 12. An air pump 11 is fixed in the box body 1, and the inlet end of the air pump 11 is connected to the collecting cylinder 9, and the outlet end of the air pump 11 is connected to the gas monitor 13, and the gas monitor 13 is fixed in the box body 1.

[0050] The equipment is transferred to a special working space, and the vacuum pump 11 and the electrostatic plate 21 are started. The air outside the box 1 can enter the collecting tube 9 through the lower filter 2, the inner tube 23, and the first connecting tube 12. The air entering the collecting tube 9 enters the gas monitor 13 through the vacuum pump 11. The gas monitor 13 monitors the harmful gas content in the air in real time.

[0051] The air entering the collection tube 9 moves in a spiral motion under the guidance of the spiral shaft 36. Under the action of centrifugal force, the impurities in the air can approach the electrostatic plate 21, which can improve the adsorption efficiency of the electrostatic plate 21 on the impurities in the air. Through the lower filter 2 and the electrostatic plate 21, the content of impurities in the air in the collection tube 9 can be reduced, and the content of impurities in the air entering the gas monitor 13 can be reduced, thereby improving the accuracy of the monitoring results.

[0052] During the movement of the cover plate 6 to the left, the cover plate 6 enables the lower plate 3 to move upward through the fixed plate 18, the lower connecting rod 17 and the first slider 24. After the lower plate 3 moves upward, impurities attached to the lower filter 2 can be scraped off, thereby ensuring the air intake of the lower filter 2 during subsequent use.

[0053] During the rotation of the spiral shaft 36 , impurities adhering to the electrostatic plate 21 can be scraped off and pushed out of the collecting tube 9 , and the impurities pushed out of the collecting tube 9 fall into the collecting box 8 .

[0054] An upper plate 4 is slidably provided in the transverse direction on the upper end of the box body 1, and the upper plate 4 is connected to the driving component in the upper end of the box body 1. A through hole is opened on the top plate of the box body 1, and the upper plate 4 blocks the through hole. The upper end of the telescopic tube is located in the through hole, and an upper filter screen 35 is fixed in the upper end of the telescopic tube. The upper filter screen 35 is in sliding contact with the lower end surface of the upper plate 4, and the lower end of the telescopic tube is connected to the collecting cylinder 9. The upper part of the telescopic tube is connected to the upper plate 4 through the upper connecting assembly. During the movement of the upper plate 4 to the left, the upper part of the telescopic tube can be delayed to move upward through the upper connecting piece.

[0055] The driving assembly includes a transversely arranged electric push rod 15, the left end of which is fixedly connected to the box body 1 through a fixed block 22, a transverse fourth slide groove 37 is opened on the top plate of the box body 1, a third slider 31 is slidably arranged in the fourth slide groove 37, the right end of the electric push rod 15 is fixedly connected to the third slider 31, and the upper end of the third slider 31 is fixedly connected to the upper plate 4.

[0056] The second slider 30 is slidably engaged in the fourth slide groove 37, and the upper end of the second slider 30 is slidably disposed in the third slide groove 34 at the lower end of the upper plate 4, and the length direction of the third slide groove 34 is parallel to the length direction of the fourth slide groove 37. The second slider 30 is pressed against the right groove wall of the fourth slide groove 37, and the second slider 30 is pressed against the left groove wall of the third slide groove 34. The third slider 31 is connected to the second slider 30 by a spring 33, and the spring 33 is compressed.

[0057] The telescopic tube includes two concentrically arranged second connecting tubes 12, the upper filter screen 35 is fixed in the upper end of the upper second connecting tube 12, the lower second connecting tube 12 is fixedly connected to the collecting cylinder 9, and a bellows 141 is arranged between the two second connecting tubes 12, and the bellows 141 connects the two second connecting tubes 12.

[0058] The upper connecting assembly includes an upper connecting rod 29 , the upper end of which is inclined to the left, the lower end of which is rotatably connected to an ear plate 28 fixed on the upper second connecting pipe 12 , and the upper end of which is rotatably connected to a second slider 30 .

[0059] A guide plate 27 is fixed inside the upper end of the box body 1 , and a slide bar 26 is fixed on the upper second connecting pipe 12 , and the slide bar 26 is slidably connected to the guide plate 27 .

[0060] When it is necessary to move the upper end of the telescopic tube upward to monitor the harmful gases in the air above the box body 1, the electric push rod 15 is started, so that the third slider 31 drives the upper plate 4 to move to the left. Since the spring 33 is compressed, the second slider 30 does not move in the initial stage when the third slider 31 drives the upper plate 4 to move to the left. When the second slider 30 contacts the right groove wall of the third slide groove 34, the upper plate 4 is located on the left side of the upper filter screen 35, and the upper plate 4 no longer blocks the upper filter screen 35. In the subsequent process where the third slider 31 drives the upper plate 4 to move to the left, the second slider 30 moves to the left direction with the upper plate 4. In the process where the second slider 30 moves to the left direction, the upper second connecting pipe 12 is moved upward through the upper connecting rod 29 and the ear plate 28. During the upward movement of the upper second connecting pipe 12, the length of the bellows 141 increases. After the second connecting pipe 12 above goes up, during the operation of the vacuum pump 11, the air above the box 1 can enter the gas monitor 13 through the upper filter 35, the telescopic tube, the collecting tube 9 and the vacuum pump 11. After the upper filter 35 goes up, the device can monitor the harmful gases in the air above the box 1, avoiding the limitation of the device due to the fact that the device can only monitor the air at low places.

[0061] The electric push rod 15, the gas monitor 13 and the controller are electrically connected, and the controller is in communication connection with the handheld terminal. The gas monitor 13 monitors the content of harmful gases in the air in real time, and the controller transmits the monitoring results of the gas monitor 13 to the handheld terminal in real time, and the content of harmful gases in the special working space can be understood through the handheld terminal.

[0062] When the upper filter 35 needs to be cleaned, the electric push rod 15 is started, so that the electric push rod 15 drives the upper plate 4 to move to the right direction through the third slider 31. During the movement of the third slider 31 to the right direction, the second slider 30 is moved to the right direction through the spring 33. Under the elastic force of the spring 33, the second slider 30 moves the upper second connecting pipe 12 downward through the upper connecting rod 29 and the ear plate 28, and the bellows 141 contracts. When the upper end of the upper filter 35 is flush with the upper end of the box body 1, the upper second connecting pipe 1 2 no longer moves downward. At this time, the upper plate 4 is located on the left side of the upper filter 35. As the upper plate 4 continues to move to the right, when the second slider 30 contacts the right groove wall of the fourth slide groove 37, the second slider 30 cannot continue to move to the right. During the movement of the upper plate 4 and the third slider 31 to the right, the spring 33 is compressed, and the upper end of the second slider 30 slides in the third slide groove 34. During the movement of the upper plate 4 to the right, the upper plate 4 can scrape off the impurities attached to the upper filter 35, so that the air intake of the upper filter 35 can be guaranteed in the subsequent use.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A remotely identifiable safety monitoring device for harmful gases in a special workspace, comprising a box (1), the front end of which is hingedly connected to a door panel (5), characterized in that: A collecting cylinder (9) is fixed in the box body (1), the left end of the collecting cylinder (9) is open, a spiral shaft (36) is coaxially arranged in the collecting cylinder (9), a motor (25) is fixed at the right end of the collecting cylinder (9), the output shaft of the motor (25) is coaxially fixedly connected to the spiral shaft (36), a screw rod (16) is coaxially fixed on the spiral shaft (36), the screw rod (16) passes through the cover plate (6), the screw rod (16) is threadedly connected to the cover plate (6), the cover plate (6) blocks the open end of the collecting cylinder (9), and the cover plate (6) The cover plate (6) is slidably connected to the box body (1), the sliding direction of the cover plate (6) is parallel to the axial direction of the screw rod (16), a lower plate (3) is slidably arranged on the left side wall of the box body (1) in the vertical direction, the lower plate (3) is located outside the box body (1), the cover plate (6) and the lower plate (3) are connected by a lower connecting assembly, the lower plate (3) can move upward when the cover plate (6) moves away from the collecting cylinder (9), an opening is opened on the left side wall of the box body (1) above the lower plate (3), a lower filter screen (2) is fixed in the opening, and the lower filter screen (2) is connected to the box body The outer side surface of the left side wall of the box (1) is flush, an inner cylinder (23) connected to the opening is fixed in the box (1), the inner cylinder (23) is connected to the collecting cylinder (9) through a first connecting pipe (12), an air pump (11) is fixed in the box (1), the inlet end of the air pump (11) is connected to the collecting cylinder (9), the outlet end of the air pump (11) is connected to the gas monitor (13), the gas monitor (13) is fixed in the box (1), and an upper plate (4) is slidably arranged in the transverse direction of the upper end of the box (1) The upper plate (4) is connected to the driving assembly in the upper end of the box body (1), a through hole is opened on the top plate of the box body (1), the upper plate (4) blocks the through hole, the upper end of the telescopic tube is located in the through hole, an upper filter screen (35) is fixed in the upper end of the telescopic tube, the upper filter screen (35) is in sliding contact with the lower end surface of the upper plate (4), the lower end of the telescopic tube is connected to the collecting cylinder (9), the upper part of the telescopic tube is connected to the upper plate (4) through the upper connecting assembly, and the upper part of the telescopic tube can be delayed to move upward through the upper connecting piece during the movement of the upper plate (4) to the left.

2. According to claim 1, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: A collection box (8) is fixed in the box body (1) below the open end of the collection cylinder (9).

3. According to claim 1, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: An arc-shaped electrostatic plate (21) is embedded and fixed on the inner wall of the collecting cylinder (9), the outer edge of the spiral shaft (36) contacts the inner edge of the electrostatic plate (21), the motor (25), the electrostatic plate (21) and the controller are electrically connected, and the controller is fixed on the box body (1).

4. According to claim 1, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: A vertical second slide groove (32) is provided on the left side wall of the box body (1), a first slider (24) is slidably engaged in the second slide groove (32), and the first slider (24) is fixedly connected to the lower plate (3); the lower connecting component comprises a lower connecting rod (17) with an upwardly inclined left end, one end of the lower connecting rod (17) is rotatably connected to the first slider (24), and the other end of the lower connecting rod (17) is rotatably connected to the fixed plate (18), and the fixed plate (18) is fixedly connected to the cover plate (6).

5. According to claim 1, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: A locking rod (7) is fixed to the front end of the cover plate (6), the locking rod (7) comprising a straight portion and a longitudinal portion, the longitudinal portion of the locking rod (7) being fixedly connected to the cover plate (6), the straight portion of the locking rod (7) passing through the hole of the locking ear (10), and the locking ear (10) being fixedly connected to the door panel (5).

6. According to claim 1, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: The driving assembly comprises a transversely arranged electric push rod (15), the left end of the electric push rod (15) being fixedly connected to the box body (1) via a fixed block (22), a transverse fourth slide groove (37) being provided on the top plate of the box body (1), a third slide block (31) being slidably arranged in the fourth slide groove (37), the right end of the electric push rod (15) being fixedly connected to the third slide block (31), the upper end of the third slide block (31) being fixedly connected to the upper plate (4), the sliding card in the fourth slide groove (37) being slidably arranged in the third slide block (31), A second slider (30) is connected, the upper end of the second slider (30) is slidably arranged in a third slide groove (34) at the lower end of the upper plate (4), the length direction of the third slide groove (34) is parallel to the length direction of the fourth slide groove (37), the second slider (30) is tightly against the right groove wall of the fourth slide groove (37), the second slider (30) is tightly against the left groove wall of the third slide groove (34), the third slider (31) is connected to the second slider (30) through a spring (33), and the spring (33) is compressed.

7. According to claim 6, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: The telescopic tube comprises two concentrically arranged second connecting tubes (12), an upper filter screen (35) is fixed in the upper end of the upper second connecting tube (12), the lower second connecting tube (12) is fixedly connected to the collecting tube (9), a bellows (141) is arranged between the two second connecting tubes (12), and the bellows (141) connects the two second connecting tubes (12); the upper connecting assembly comprises an upper connecting rod (29), the upper end of the upper connecting rod (29) is inclined toward the left side, the lower end of the upper connecting rod (29) is rotatably connected to an ear plate (28) fixed to the upper second connecting tube (12), and the upper end of the upper connecting rod (29) is rotatably connected to a second sliding block (30).

8. According to claim 7, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: A guide plate (27) is fixed inside the upper end of the box body (1), a slide bar (26) is fixed on the upper second connecting pipe (12), and the slide bar (26) is slidably connected to the guide plate (27).

9. According to claim 6, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: The electric push rod (15), the gas monitor (13) and the controller are electrically connected, and the controller is communicatively connected with the handheld terminal.

10. According to claim 1, a remotely identifiable safety monitoring device for harmful gases in special working spaces is characterized in that: A first transverse sliding groove (19) is provided on the rear side wall of the box body (1), a guide block (20) is slidably arranged in the first sliding groove (19), and the guide block (20) is fixedly connected to the cover plate (6).

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