Alarm device for monitoring hazardous gas

Abstract

The utility model relates to the technical field of hazardous gas monitoring, discloses an alarm device for monitoring hazardous gas, and solves the problems that in the using process of a monitoring alarm device for hazardous gas, the propagation direction of alarm sound is single, a better alarm effect is inconvenient to achieve, and thus better practicability is inconvenient to achieve. The device comprises a mounting rack, a supporting plate is fixedly mounted in the mounting rack, a monitor is fixedly mounted at the top of the supporting plate, an alarm mechanism is fixedly mounted at the top of the mounting rack, the alarm mechanism comprises a strip-shaped frame, the strip-shaped frame is fixedly mounted at the top of the mounting rack, and a control switch is fixedly mounted in the middle of the outer side of the strip-shaped frame; a driving motor is fixedly mounted in the middle of the top end in the strip-shaped frame; according to the utility model, when the monitoring alarm device for the hazardous gas is used, alarm sound can be transmitted in two directions at the same time, so that a better alarm effect can be achieved, and better practicability can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dangerous gas monitoring, in particular to an alarm device for monitoring dangerous gas. Background Art

[0002] Dangerous gas refers to the general term for flammable, explosive gases, toxic, harmful, corrosive gases and chemical volatile gases. In areas where dangerous gases exist, in order to ensure the safety of the area, monitoring and alarm devices are needed to monitor and alarm the dangerous gases in the area. However, when using the monitoring and alarm devices for dangerous gases, the alarm sound propagates in a single direction, which is not conducive to achieving a better alarm effect and thus not conducive to achieving better practicality. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an alarm device for monitoring dangerous gases, which effectively solves the problem that during the use of the dangerous gas monitoring alarm device, the alarm sound propagates in a single direction, which is not convenient for achieving a better alarm effect and thus not convenient for achieving better practicality.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an alarm device for monitoring dangerous gases, comprising a mounting frame, a support plate is fixedly installed inside the mounting frame, a monitor is fixedly installed on the top of the support plate, an alarm mechanism is fixedly installed on the top of the mounting frame, the alarm mechanism comprises a bar frame, and the bar frame is fixedly installed on the top of the mounting frame, a control switch is fixedly installed in the middle of the outer side of the bar frame, a drive motor is fixedly installed in the middle of the top of the inner side of the bar frame, and the drive motor is electrically connected to the control switch, a first bevel gear is fixedly installed on the output shaft of the drive motor, and a second bevel gear is meshingly connected to the outer side of the first bevel gear. A transmission rod is fixedly installed through the inside of the second bevel gear, a positioning frame is symmetrically fixedly installed on the inner bottom end of the bar frame, and the transmission rod is rotatably installed inside the two positioning frames, third bevel gears are fixedly installed at both ends of the transmission rod, the outer side of the third bevel gear is meshingly connected with a fourth bevel gear, an axle rod is fixedly installed through the inside of the fourth bevel gear, and both ends of the axle rod are rotatably connected to the inner wall of the bar frame, a cam is fixedly installed on the outer side of the axle rod, a movable seat is provided on the side of the two cams away from each other, an impact block is fixedly installed in the middle of the side of the movable seat away from the cam, and an alarm bell is fixedly installed on both ends of the inner side of the bar frame.

[0005] Preferably, a connecting rod is symmetrically fixedly installed on one side of the movable seat away from the cam, a sliding sleeve is fixedly installed on one end of the connecting rod away from the movable seat, a positioning rod is installed slidingly through the inside of the sliding sleeve, connecting blocks are fixedly installed on both ends of the positioning rod, and the connecting blocks are fixedly installed on the inner wall of the bar frame, a return spring is provided on the side of the sliding sleeve away from the movable seat and located on the outer side of the positioning rod, and the end of the return spring away from the sliding sleeve is fixedly connected to one of the connecting blocks.

[0006] Preferably, sound amplification covers are fixedly mounted on both sides of the bar frame, and a dustproof screen is fixedly mounted inside the sound amplification cover.

[0007] Preferably, the mounting frame is an "X"-shaped structure, and fixing bolts are movably installed through the four corners of the mounting frame.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] 1) During operation, through the interaction of the mounting frame, support plate, monitor and alarm mechanism, the hazardous gas monitoring alarm device can transmit the alarm sound in two directions at the same time during use, so as to achieve better alarm effect and thus better practicality;

[0010] 2) During operation, through the interaction of the connecting rod, sliding sleeve, positioning rod, connecting block and reset spring, the movable seat can be easily reset during movement and achieve better stability, thereby ensuring that the alarm mechanism can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0012] In the attached picture:

[0013] Figure 1 This is a schematic diagram of the structure of an alarm device for monitoring dangerous gases according to the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the alarm mechanism of the utility model;

[0015] Figure 3 It is a schematic diagram of the cam enlarged structure of the utility model.

[0016] In the figure: 1. mounting frame; 2. support plate; 3. monitor; 4. alarm mechanism; 5. bar frame; 6. control switch; 7. drive motor; 8. first bevel gear; 9. second bevel gear; 10. transmission rod; 11. positioning frame; 12. third bevel gear; 13. fourth bevel gear; 14. shaft; 15. cam; 16. movable seat; 17. impact block; 18. alarm bell; 19. connecting rod; 20. sliding sleeve; 21. positioning rod; 22. connecting block; 23. reset spring; 24. sound amplification cover; 25. dust screen; 26. fixing bolt. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] Embodiment 1, by Figure 1 , Figure 2 and Figure 3 The utility model includes a mounting frame 1, which is a "X"-shaped structure, and the four corners of the mounting frame 1 are movably penetrated with fixing bolts 26, the interior of the mounting frame 1 is fixedly installed with a support plate 2, the top of the support plate 2 is fixedly installed with a monitor 3, and the top of the mounting frame 1 is fixedly installed with an alarm mechanism 4;

[0019] The alarm mechanism 4 includes a bar frame 5, and the bar frame 5 is fixedly installed on the top of the mounting frame 1, a control switch 6 is fixedly installed in the middle of the outer side of the bar frame 5, a sound amplification cover 24 is fixedly installed on both sides of the bar frame 5, and a dustproof screen 25 is fixedly installed inside the sound amplification cover 24, a driving motor 7 is fixedly installed in the middle of the top of the inner part of the bar frame 5, and the driving motor 7 is electrically connected to the control switch 6, a first bevel gear 8 is fixedly installed on the output shaft of the driving motor 7, a second bevel gear 9 is meshedly connected to the outer side of the first bevel gear 8, a transmission rod 10 is fixedly installed through the inside of the second bevel gear 9, a positioning frame 11 is symmetrically fixedly installed at the inner bottom end of the bar frame 5, and the transmission rod 10 is rotatably installed inside the two positioning frames 11, a third bevel gear 12 is fixedly installed at both ends of the transmission rod 10, a fourth bevel gear 13 is meshedly connected to the outer side of the third bevel gear 12, and the fourth bevel gear 13 is fixedly installed inside the inner A shaft rod 14 is fixedly installed through it, and both ends of the shaft rod 14 are rotatably connected to the inner wall of the strip frame 5. A cam 15 is fixedly installed on the outer side of the shaft rod 14. A movable seat 16 is provided on the side away from each other of the two cams 15. A collision block 17 is fixedly installed on the middle part of the side of the movable seat 16 away from the cam 15. Alarm bells 18 are fixedly installed on both ends of the inside of the strip frame 5. A connecting rod 19 is symmetrically fixedly installed on the side of the movable seat 16 away from the cam 15. A sliding sleeve 20 is fixedly installed on one end of the connecting rod 19 away from the movable seat 16. A positioning rod 21 is installed inside the sliding sleeve 20 for sliding through it. Connecting blocks 22 are fixedly installed on both ends of the positioning rod 21, and the connecting block 22 is fixedly installed on the inner wall of the strip frame 5. A reset spring 23 is provided on the side of the sliding sleeve 20 away from the movable seat 16 and located on the outer side of the positioning rod 21, and the end of the reset spring 23 away from the sliding sleeve 20 is fixedly connected to one of the connecting blocks 22.

[0020] During use, through the interaction of the set mounting frame 1, support plate 2, monitor 3 and alarm mechanism 4, the dangerous gas monitoring alarm device can be used to transmit alarm sounds in two directions at the same time during use, so as to achieve a better alarm effect, thereby achieving better practicality, and through the interaction of the set connecting rod 19, sliding sleeve 20, positioning rod 21, connecting block 22 and reset spring 23, the movable seat 16 can be reset during the movement and also achieve better stability, thereby ensuring that the alarm mechanism 4 can work normally.

[0021] Working principle: When working, first rotate the fixing bolt 26 to fix the mounting frame 1, and then monitor the dangerous gas through the monitor 3. When the concentration of the dangerous gas is detected to be excessive, the monitor 3 sends a signal, and the control switch 6 controls the drive motor 7 to work. The drive motor 7 drives the first bevel gear 8 to rotate, and the first bevel gear 8 drives the second bevel gear 9 to rotate, and the second bevel gear 9 drives the transmission rod 10 to rotate, and the transmission rod 10 drives the third bevel gear 12 to rotate, and the third bevel gear 12 drives the fourth bevel gear 13 to rotate, and the fourth bevel gear 13 drives the shaft rod 14 to rotate, and the shaft rod 14 drives the cam 15 to rotate. When the cam 15 rotates in the first half of a circle, it will push the movable seat 16 to move, and the movable seat 16 drives the connecting rod 19 to move, and the connecting rod 19 drives the sliding sleeve 20 to slide on the outside of the positioning rod 21, which can It is enough to ensure that the movable seat 16 achieves better stability when moving. At the same time, the sliding sleeve 20 moves to squeeze the reset spring 23, so that the reset spring 23 undergoes elastic deformation. At the same time, the movable seat 16 drives the impact block 17 to move. The two impact blocks 17 move to impact the two alarm bells 18 respectively, so that the two alarm bells 18 send out alarm sounds at the same time, and the alarm sounds are transmitted through the sound amplifier cover 24. When the cam 15 rotates the second half of the circle, the movable seat 16 loses its driving force. Under the rebound force of the reset spring 23, the movable seat 16 is pushed to reset and move through the sliding sleeve 20 and the connecting rod 19. Such a cycle causes the two alarm bells 18 to send out alarm sounds in two directions at the same time. In this way, the dangerous gas monitoring alarm device can be used to transmit alarm sounds in two directions at the same time during use, so as to achieve a better alarm effect, thereby achieving better practicality.

Claims

1. An alarm device for monitoring dangerous gases, comprising a mounting frame (1), characterized in that: A support plate (2) is fixedly installed inside the mounting frame (1), a monitor (3) is fixedly installed on the top of the support plate (2), an alarm mechanism (4) is fixedly installed on the top of the mounting frame (1), the alarm mechanism (4) comprises a bar frame (5), and the bar frame (5) is fixedly installed on the top of the mounting frame (1), a control switch (6) is fixedly installed in the middle of the outer side of the bar frame (5), a drive motor (7) is fixedly installed in the middle of the top of the inner side of the bar frame (5), and the drive motor (7) is electrically connected to the control switch (6), a first bevel gear (8) is fixedly installed on the output shaft of the drive motor (7), a second bevel gear (9) is meshedly connected to the outer side of the first bevel gear (8), a transmission rod (10) is fixedly installed and penetrated inside the second bevel gear (9), and the bar frame (5) is fixedly installed on the outer side of the second bevel gear (9). ) are symmetrically fixedly installed at the inner bottom end of the two positioning frames (11), and the transmission rod (10) is rotatably installed inside the two positioning frames (11), and the third bevel gear (12) is fixedly installed at both ends of the transmission rod (10), and the outer side of the third bevel gear (12) is meshingly connected with the fourth bevel gear (13), and the inner side of the fourth bevel gear (13) is fixedly penetrated by a shaft rod (14), and both ends of the shaft rod (14) are rotatably connected to the inner wall of the bar frame (5), and a cam (15) is fixedly installed on the outer side of the shaft rod (14), and a movable seat (16) is provided on the side of the two cams (15) away from each other, and a collision block (17) is fixedly installed in the middle of the side of the movable seat (16) away from the cam (15), and an alarm bell (18) is fixedly installed at both ends of the inner side of the bar frame (5).

2. The alarm device for monitoring dangerous gases according to claim 1, characterized in that: A connecting rod (19) is symmetrically fixedly installed on one side of the movable seat (16) away from the cam (15); a sliding sleeve (20) is fixedly installed on one end of the connecting rod (19) away from the movable seat (16); a positioning rod (21) is slidably installed inside the sliding sleeve (20); connecting blocks (22) are fixedly installed on both ends of the positioning rod (21), and the connecting blocks (22) are fixedly installed on the inner wall of the bar frame (5); a return spring (23) is sleeved on one side of the sliding sleeve (20) away from the movable seat (16) and located on the outer side of the positioning rod (21), and one end of the return spring (23) away from the sliding sleeve (20) is fixedly connected to one of the connecting blocks (22).

3. The alarm device for monitoring dangerous gases according to claim 1, characterized in that: A sound amplification cover (24) is fixedly mounted on both sides of the bar frame (5), and a dustproof screen plate (25) is fixedly mounted inside the sound amplification cover (24).

4. The alarm device for monitoring dangerous gases according to claim 1, characterized in that: The mounting frame (1) is a "X"-shaped structure, and fixing bolts (26) are movably installed through the four corners of the mounting frame (1).

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