Gas detector

Abstract

The utility model relates to the technical field of instruments and meters, and discloses a gas detector which comprises a fixing plate, an angle adjusting mechanism is mounted on the inner wall of the fixing plate, a telescopic mechanism is rotatably connected to the inner wall of the fixing plate, a fixing shell is fixedly connected to the top of the telescopic mechanism, and a gas detector is fixedly connected to the inner wall of the fixing shell. The telescopic mechanism comprises a fixing rod, the two sides of the fixing rod are rotationally connected to the inner wall of the fixing plate, the inner wall of the fixing rod is fixedly connected with a hollow plate, the bottom of the hollow plate is fixedly connected with a sliding rod, the outer wall of the sliding rod is sleeved with a spring, and the bottom end of the spring is fixedly connected with a pressing rod. According to the utility model, the gas detector can be fixed on the arm and then the height and angle adjusting device is additionally arranged, so that the gas detector is controlled to extend into a place needing to be detected for detection, and a position which is difficult to enter by a person can be conveniently detected.

Description

Technical Field

[0001] This utility model relates to the field of instrumentation technology, and in particular to a gas detector. Background Technology

[0002] The purpose of a gas detector is to monitor the concentration and type of various gases in the environment in real time. It can promptly detect potential safety hazards such as gas leaks, poisoning, and explosions, protecting personnel and preventing accidents. It also helps ensure the normal operation of industrial production, avoiding equipment damage and production stoppages caused by gas problems, playing an indispensable role in maintaining environmental safety and production order.

[0003] Gas detectors mainly operate on principles such as catalytic combustion, electrochemical, and infrared. Catalytic combustion detectors detect combustible gases by generating heat through catalysis; electrochemical detectors detect gases by utilizing the current generated from oxidation-reduction reactions at electrodes; and infrared detectors detect gases based on their specific absorption characteristics of infrared light. They are widely used in chemical, coal mining, gas, and environmental protection industries to detect combustible and toxic gases, ensuring production safety and environmental quality. Detection is typically performed by personnel holding the detector close to the location to be detected.

[0004] Some gas detectors are handheld by staff, which makes them prone to being dropped and makes it difficult to detect inaccessible areas. This results in gas safety hazards in these areas going undetected, potentially leading to accidents and serious consequences such as loss of life and environmental pollution. Therefore, a new gas detector is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a gas detector, which aims to improve the problems in the prior art where the gas detector is easily dropped when held by the operator and is difficult to detect in locations that are difficult for personnel to access.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas detector includes a fixed plate, an angle adjustment mechanism installed on the inner wall of the fixed plate, a telescopic mechanism rotatably connected to the inner wall of the fixed plate, a fixed shell fixedly connected to the top of the telescopic mechanism, and a gas detector fixedly connected to the inner wall of the fixed shell.

[0008] The telescopic mechanism includes a fixed rod, with both sides of the fixed rod rotatably connected to the inner wall of the fixed plate. A hollow plate is fixedly connected to the inner wall of the fixed rod, and a sliding rod is fixedly connected to the bottom of the hollow plate. A spring is sleeved on the outer wall of the sliding rod, and a pressing rod is fixedly connected to the bottom end of the spring. A rotating rod is rotatably connected to the outer wall of the pressing rod, and a pawl is fixedly connected to the outer wall of the rotating rod. A transmission mechanism is installed on the inner wall of the fixed rod.

[0009] Through the above technical solution: the fixed rod is rotatably connected to the inner wall of the fixed plate, the hollow plate is fixed to the inner wall of the fixed rod, the spring sleeved at the bottom of the sliding rod can be compressed when the pressing rod is pressed, so that the pressing rod moves on the outer wall of the sliding rod, the rotating rod is rotatably connected to the pressing rod, the pawl on the rotating rod can engage with the ratchet when the pressing rod is pressed, the transmission mechanism on the inner wall of the fixed rod can realize the transmission of power, the spring can reset the pressing rod when the pressing rod is not under force, the rotatable connection between the rotating rod and the pressing rod allows the pawl to flexibly contact or separate from the ratchet, when the pressing rod drives the pawl to engage with the ratchet, the rotation of the ratchet can drive the transmission mechanism to work, realize the height adjustment of the gas detector, meet the needs of gas detection at different heights, avoid the need for staff to frequently adjust the position of the device, and improve detection efficiency.

[0010] As a further description of the above technical solution:

[0011] The angle adjustment mechanism includes a rotating shaft, the outer wall of which is rotatably connected to the inner wall of the fixed plate, a worm gear fixedly connected to one side of the rotating shaft, two driving bevel gears fixedly connected to the outer wall of the rotating shaft, a connecting plate rotatably connected to the inner wall of the fixed plate, a transmission bevel gear fixedly connected to one end of the connecting plate, and a connecting column rotatably connected to the inner wall of the fixed plate.

[0012] The above technical solution involves: a rotating shaft rotatably connected to the inner wall of a fixed plate; a worm gear on one side of the rotating shaft that drives other components to rotate when the shaft rotates; two active bevel gears fixed to the outer wall of the rotating shaft that drive the active bevel gears to rotate when the shaft rotates; a connecting plate rotatably connected to the inner wall of the fixed plate; a transmission bevel gear at one end of the connecting plate that meshes with the active bevel gears; and a connecting column rotatably connected to the inner wall of the fixed plate. When the rotating shaft rotates, it drives the worm gear to rotate, which transmits the rotation to the active bevel gears, which then transmit the rotation to the transmission bevel gears. The transmission bevel gears drive the connecting plate to rotate, and the rotation of the connecting plate drives the connecting column to rotate, thus adjusting the angle of the fixed rod. This allows the gas detector to be inserted into different angles for detection, expanding the detection range and facilitating the detection of gases at different locations, adapting to various complex detection environments.

[0013] As a further description of the above technical solution:

[0014] A worm gear is fixedly connected to the outer wall of the connecting column, and the outer wall of the worm gear is meshed with the outer wall of the connecting plate.

[0015] The above technical solution involves a worm gear fixed to the outer wall of the connecting column and meshing with the outer wall of the connecting plate. When the connecting plate rotates, the meshing relationship drives the worm gear to rotate, which in turn drives the connecting column to rotate. The meshing connection between the worm gear and the connecting plate ensures the stability and accuracy of the rotation, making the adjustment of the fixed rod angle more stable, avoiding shaking, ensuring the stability of the gas detector during detection, and improving the accuracy of the detection.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the connecting column is fixedly connected to the inner wall of the fixed rod, and the outer wall of the transmission bevel gear and the outer wall of the driving bevel gear are meshed with each other.

[0018] The above technical solution involves a connecting column fixed to the inner wall of a fixed rod. A transmission bevel gear meshes with a driving bevel gear. When the driving bevel gear rotates, it drives the transmission bevel gear to rotate through the meshing relationship. The rotation of the transmission bevel gear drives the connecting plate to rotate, which in turn drives the worm gear to rotate. The worm gear then drives the connecting column to rotate, which in turn drives the fixed rod to rotate. The meshing of the driving bevel gear and the transmission bevel gear ensures effective power transmission, allowing the fixed rod to rotate in the expected direction and angle. This facilitates precise adjustment of the gas detector's angle, meeting various detection requirements.

[0019] As a further description of the above technical solution:

[0020] The transmission mechanism includes a connecting rod, the outer wall of which is rotatably connected to the inner wall of the fixed rod, a ratchet fixedly connected to the outer wall of the connecting rod, a transmission gear fixedly connected to the outer wall of the connecting rod, and the outer wall of the pawl and the outer wall of the ratchet engaging with each other.

[0021] Through the above technical solution: the connecting rod is rotatably connected to the inner wall of the fixed rod, and the ratchet and transmission gear on the outer wall of the connecting rod can rotate together when the connecting rod rotates. The pawl is engaged with the ratchet. When the pressing rod drives the pawl to engage with the ratchet, the ratchet rotates, causing the connecting rod to rotate. The rotation of the connecting rod drives the transmission gear to rotate. The engagement of the pawl and the ratchet realizes the control of the ratchet's rotation, thereby controlling the rotation of the connecting rod and the transmission gear. Through the meshing relationship between the transmission gear and the rack, the rack is controlled, enabling the telescopic function of the device to be realized, meeting the needs of height adjustment of the gas detector, and improving the practicality of the device.

[0022] As a further description of the above technical solution:

[0023] The inner wall of the fixed rod is slidably connected to a rack, and the outer wall of the rack is meshed with the outer wall of the transmission gear.

[0024] Through the above technical solution: the rack on the inner wall of the fixed rod meshes with the transmission gear. When the transmission gear rotates, it drives the rack to slide on the inner wall of the fixed rod through the meshing relationship. The meshing of the rack and the transmission gear allows the rotation of the transmission gear to be converted into the linear motion of the rack, thereby realizing the control of the telescopic rod, and thus realizing the adjustment of the height of the fixed shell and the gas detector, so that the gas detector can perform detection at different heights and adapt to different detection scenarios.

[0025] As a further description of the above technical solution:

[0026] A telescopic rod is fixedly connected to the top of the rack, and the top of the telescopic rod is fixedly connected to the bottom of the fixed shell;

[0027] The above technical solution involves a telescopic rod at the top of the rack fixed to the bottom of the fixed housing. When the rack slides along the inner wall of the fixed rod, it causes the telescopic rod to rise or fall, which in turn causes the fixed housing and the gas detector to rise or fall. The connection between the telescopic rod, the rack, and the fixed housing ensures the stability and reliability of height adjustment, making the gas detector more stable during height adjustment, avoiding shaking, and improving the accuracy and stability of detection.

[0028] As a further description of the above technical solution:

[0029] The outer wall of the rotating rod is fitted with a torsion spring, and two cuffs are fixedly connected to the bottom of the fixed plate.

[0030] Through the above technical solution: the torsion spring sleeved on the outer wall of the rotating rod can reset the pawl when it separates from the ratchet; the two cuffs at the bottom of the fixed plate can be worn on the arm; the torsion spring ensures that the pawl can be reset in time for the next operation, improving the working efficiency of the device; the cuffs make it easy to wear the device on the arm, freeing up the hands and making it convenient for staff to perform gas detection in different positions, improving the convenience and flexibility of detection.

[0031] This utility model has the following beneficial effects:

[0032] 1. In this utility model, pressing the pressing rod causes it to slide on the outer wall of the sliding rod. The pressing of the pressing rod causes the pawl to contact the ratchet, causing the ratchet to rotate once. The rotation of the ratchet causes the connecting rod to rotate, which in turn causes the transmission gear to rotate. The rotation of the transmission gear causes the rack to move, which in turn causes the telescopic rod to rise. The rise of the telescopic rod causes the fixed shell and the gas detector inside the fixed shell to move upward, thereby achieving height adjustment. This makes it convenient for staff to extend the gas detector to a higher position for monitoring.

[0033] 2. In this utility model, rotating the worm gear causes the active bevel gear to rotate, which in turn causes the transmission bevel gear to rotate. The rotation of the transmission bevel gear causes the connecting plate to rotate, which in turn causes the worm wheel to rotate. The rotation of the worm wheel causes the connecting column to adjust the angle of the fixing rod, thereby controlling the gas detector to extend into the area to be detected, making it easier to detect locations that are difficult for personnel to access. Attached Figure Description

[0034] Figure 1 This is a three-dimensional schematic diagram of a gas detector proposed in this utility model;

[0035] Figure 2 This is a schematic diagram of the telescopic rod of a gas detector proposed in this utility model;

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 4 This is a schematic diagram of the structure of the fixing rod of a gas detector proposed in this utility model;

[0038] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0039] Legend:

[0040] 1. Fixed plate; 2. Telescopic mechanism; 21. Fixed rod; 22. Hollow plate; 23. Pressing rod; 24. Spring; 25. Sliding rod; 26. Pawl; 27. Torsion spring; 28. Rotating rod; 29. ​​Transmission mechanism; 291. Ratchet; 292. Connecting rod; 293. Transmission gear; 294. Rack; 295. Telescopic rod; 3. Fixed shell; 4. Gas detector; 5. Angle adjustment mechanism; 51. Rotating shaft; 52. Driving bevel gear; 53. Transmission bevel gear; 54. Connecting plate; 55. Worm gear; 56. Connecting column; 57. Worm; 6. Cuff. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Reference Figures 1 to 3 This utility model provides an embodiment of a gas detector 4, including a fixed plate 1. The fixed plate 1 is used to install other components and provides a foundation for support and fixation of the entire device. An angle adjustment mechanism 5 is installed on the inner wall of the fixed plate 1. The angle adjustment mechanism 5 is used to adjust the angle of the gas detector 4 to facilitate detection at different positions. A telescopic mechanism 2 is rotatably connected to the inner wall of the fixed plate 1. The telescopic mechanism 2 can realize the height adjustment of the gas detector 4 to facilitate the detection of gas at different height positions. A fixed shell 3 is fixedly connected to the top of the telescopic mechanism 2. The fixed shell 3 is used to fix the gas detector 4 and provide protection and installation space for the gas detector 4. The gas detector 4 is fixedly connected to the inner wall of the fixed shell 3. The gas detector 4 is used to detect the composition and concentration of the gas and other related data. The telescopic mechanism 2 includes a fixed rod 21. The two sides of the fixed rod 21 are rotatably connected to the inner wall of the fixed plate 1. The fixed rod 21 is part of the telescopic mechanism 2 and can rotate on the inner wall of the fixed plate 1 to realize the telescopic function.

[0043] Specifically, the angle adjustment mechanism 5 installed on the inner wall of the fixed plate 1 can adjust the angle of the gas detector 4, which is convenient for detection at different positions. The telescopic mechanism 2 rotatably connected to the inner wall can adjust the height of the gas detector 4, which is convenient for detecting gas at different height positions. The fixed shell 3 at the top of the telescopic mechanism 2 is used to fix the gas detector 4 and provide protection and installation space. The gas detector 4 connected to the inner wall of the fixed shell 3 can detect data such as gas composition and concentration. The fixed rod 21 in the telescopic mechanism 2 is rotatably connected to the inner wall of the fixed plate 1 on both sides and is a component of the telescopic mechanism 2. It can rotate on the inner wall of the fixed plate 1 to realize the telescopic function.

[0044] A hollow plate 22 is fixedly connected to the inner wall of the fixed rod 21. The hollow plate 22 is used to install other components and provides a certain space. A sliding rod 25 is fixedly connected to the bottom of the hollow plate 22. The sliding rod 25 is used to cooperate with other components to realize the telescopic function. A spring 24 is sleeved on the outer wall of the sliding rod 25. The spring 24 is used to control the reset of the pressing rod 23. After the pressing rod 23 is pressed, the spring 24 provides elastic force to restore it to the initial position. The pressing rod 23 is fixedly connected to the bottom end of the spring 24. The pressing rod 23 is used to trigger the action of the telescopic mechanism 2. The height is adjusted by pressing. A rotating rod 28 is rotatably connected to the outer wall of the pressing rod 23. The rotating rod 28 is used to connect the pressing rod 23 and the pawl 26 and transmit the action of the pressing rod 23 to the pawl 26. The pawl 26 is fixedly connected to the outer wall of the rotating rod 28. The pawl 26 is used to cooperate with the ratchet 291 to realize the rotation of the ratchet 291, thereby driving the action of other components.

[0045] Specifically, the hollow plate 22 fixedly connected to the inner wall of the fixed rod 21 can install other components and provide space. The sliding rod 25 at its bottom can cooperate with other components to realize the telescopic function. The spring 24 sleeved on the outer wall of the sliding rod 25 can control the reset of the pressing rod 23. After the pressing rod 23 is pressed, it provides elastic force to make it return to its position. The pressing rod 23 connected to the bottom end of the spring 24 is used to trigger the telescopic mechanism 2 to achieve height adjustment. The rotating rod 28 rotatably connected to the outer wall of the pressing rod 23 can connect the pressing rod 23 and the pawl 26 to transmit the action of the pressing rod 23. The pawl 26 fixed on the outer wall of the rotating rod 28 can cooperate with the ratchet 291 to realize the rotation of the ratchet 291 and drive the action of other components.

[0046] A transmission mechanism 29 is installed on the inner wall of the fixed rod 21. The transmission mechanism 29 is used to convert the action of the pressing rod 23 into the raising and lowering of the telescopic rod 295, thereby realizing height adjustment. The transmission mechanism 29 includes a connecting rod 292, the outer wall of which is rotatably connected to the inner wall of the fixed rod 21. The connecting rod 292 can rotate on the inner wall of the fixed rod 21 to realize the transmission function. A ratchet 291 is fixedly connected to the outer wall of the connecting rod 292. The ratchet 291 cooperates with the pawl 26 and rotates under the action of the pawl 26, driving the connecting rod 292 to rotate. A transmission gear 293 is fixedly connected to the outer wall of the connecting rod 292. The transmission gear 293 is used to convert the rotation of the connecting rod 292 into the movement of the rack 294 to realize the telescopic function. The outer wall of the pawl 26 and the outer wall of the ratchet 291 are engaged with each other. The engagement connection allows the pawl 26 to drive the ratchet 291 to rotate, realizing the transmission function. A rack 294 is slidably connected to the inner wall of the fixed rod 21. The rack 294 can slide on the inner wall of the fixed rod 21 and mesh with the transmission gear 293 to convert the rotation of the transmission gear 293 into its own movement.

[0047] Specifically, the transmission mechanism 29 on the inner wall of the fixed rod 21 can convert the action of the pressing rod 23 into the lifting and lowering of the telescopic rod 295, thereby achieving height adjustment. The transmission mechanism 29 includes a connecting rod 292, the outer wall of which is rotatably connected to the inner wall of the fixed rod 21 to achieve transmission. The ratchet 291 fixed on the outer wall of the connecting rod 292 cooperates with the pawl 26, and rotates under the action of the pawl 26, driving the connecting rod 292 to rotate. The transmission gear 293 on the outer wall of the connecting rod 292 can convert its rotation into the movement of the rack 294, thereby achieving extension and retraction. The pawl 26 is engaged with the ratchet 291 to drive the ratchet 291 to rotate, thereby achieving transmission. The rack 294 slidably connected to the inner wall of the fixed rod 21 meshes with the transmission gear 293, converting the rotation of the transmission gear 293 into its own movement.

[0048] The outer wall of the rack 294 and the outer wall of the transmission gear 293 are meshed together. The meshing connection ensures the accuracy and stability of the transmission. A telescopic rod 295 is fixedly connected to the top of the rack 294. The telescopic rod 295 is used to drive the fixed shell 3 and the gas detector 4 to move up and down to achieve height adjustment. The top of the telescopic rod 295 is fixedly connected to the bottom of the fixed shell 3. A torsion spring 27 is sleeved on the outer wall of the rotating rod 28. The torsion spring 27 is used to control the pawl 26 to reset. After the pawl 26 is separated from the ratchet 291, the torsion spring 27 provides elastic force to restore it to the initial position. Two cuffs 6 are fixedly connected to the bottom of the fixed plate 1. The cuffs 6 are used to wear the device on the arm for easy carrying and use.

[0049] Specifically, the rack 294 is meshed with the transmission gear 293 to ensure accurate and stable transmission. The telescopic rod 295 fixed at the top of the rack 294 can drive the fixed shell 3 and the gas detector 4 to move up and down to achieve height adjustment. The torsion spring 27 outside the rotating rod 28 provides elastic force for the pawl 26 to reset after the pawl 26 is separated from the ratchet 291. The two cuffs 6 at the bottom of the fixed plate 1 make it easy to wear the device on the arm for convenient carrying and use.

[0050] Reference Figure 1 , Figure 4 and Figure 5The angle adjustment mechanism 5 includes a rotating shaft 51, the outer wall of which is rotatably connected to the inner wall of the fixed plate 1. The rotating shaft 51 can rotate within the fixed plate 1 to transmit power. A worm gear 57 is fixedly connected to one side of the rotating shaft 51. The worm gear 57 drives the active bevel gear 52 to rotate, thereby achieving angle adjustment. Two active bevel gears 52 are fixedly connected to the outer wall of the rotating shaft 51. The active bevel gears 52 mesh with the transmission bevel gear 53 to transmit the rotation of the rotating shaft 51 to the connecting plate 54, thereby achieving angle adjustment. A connecting plate 54 is rotatably connected to the inner wall of the fixed plate 1. The connecting plate 54 can rotate within the fixed plate 1 to convert the rotation of the active bevel gears 52 into the rotation of the worm gear 55. A transmission bevel gear 53 is fixedly connected to one end of the connecting plate 54. The transmission bevel gear 53 meshes with the active bevel gear 52 to transmit power, thereby achieving angle adjustment.

[0051] Specifically, the angle adjustment mechanism 5 is composed of components such as a rotating shaft 51. The rotating shaft 51 is rotatably connected to the inner wall of the fixed plate 1 and can transmit power. The worm gear 57 fixed on one side can drive the active bevel gear 52 to rotate, thereby realizing angle adjustment. The two active bevel gears 52 fixed on the outer wall of the rotating shaft 51 can mesh with the transmission bevel gear 53 to transmit the rotation to the connecting plate 54. The connecting plate 54 is rotatably connected to the inner wall of the fixed plate 1 and can convert the rotation of the active bevel gear 52 into the rotation of the worm gear 55. The transmission bevel gear 53 fixed at one end meshes with the active bevel gear 52, thereby realizing the power transmission and function of angle adjustment of the gas detector 4.

[0052] A connecting column 56 is rotatably connected to the inner wall of the fixed plate 1, and a worm gear 55 is fixedly connected to the outer wall of the connecting column 56. The worm gear 55 is used to convert the rotation of the connecting plate 54 into the rotation of the connecting column 56, thereby realizing the angle adjustment of the fixed rod 21. The outer wall of the worm gear 55 and the outer wall of the connecting plate 54 are meshed together, which ensures the accuracy and stability of the transmission. The outer wall of the connecting column 56 is fixedly connected to the inner wall of the fixed rod 21. The connecting column 56 is used to transmit the rotation of the worm gear 55 to the fixed rod 21, thereby realizing the angle adjustment of the fixed rod 21. The outer wall of the transmission bevel gear 53 and the outer wall of the driving bevel gear 52 are meshed together, which realizes the transmission of power and ensures the smooth operation of the angle adjustment.

[0053] Specifically, the connecting column 56, which is rotatably connected to the inner wall of the fixed plate 1, has a worm gear 55 fixed to its outer wall. The worm gear 55 meshes with the connecting plate 54, converting the rotation of the connecting plate 54 into the rotation of the connecting column 56, ensuring accurate and stable transmission and realizing the angle adjustment of the fixed rod 21. The connecting column 56 is fixed to the inner wall of the fixed rod 21, transmitting the rotation of the worm gear 55. The transmission bevel gear 53 meshes with the drive bevel gear 52 to realize power transmission and ensure the smooth realization of the angle adjustment function of the gas detector 4.

[0054] Working principle: The entire device is worn on the arm via the cuff 6. When the height of the device needs to be adjusted, the pressing lever 23 is pressed. Pressing the pressing lever 23 causes it to slide against the outer wall of the sliding rod 25. The pressing of the pressing lever 23 causes the pawl 26 to contact the ratchet 291, causing the ratchet 291 to rotate once. The rotation of the ratchet 291 causes the connecting rod 292 to rotate, which in turn causes the transmission gear 293 to rotate. The rotation of the transmission gear 293 then drives the rack 2... 94 moves to drive the telescopic rod 295 to rise. The rise of the telescopic rod 295 causes the fixed shell 3 and the gas detector 4 inside the fixed shell 3 to move upward, thereby achieving height adjustment. The torsion spring 27 is used to control the pawl 26 to reset, and the spring 24 is used to control the pressing rod 23 to reset. When it is necessary to control the telescopic rod 295 to reset, press the pressing rod 23 on the other side, so that the pawl 26 on the other side controls the ratchet 291 to rotate in the opposite direction, thereby controlling the rack 294 to descend.

[0055] When the angle of the fixed rod 21 needs to be adjusted to facilitate gas detection by the staff using the gas detector 4, the worm gear 57 is rotated. The rotation of the worm gear 57 drives the drive bevel gear 52 to rotate, which in turn drives the transmission bevel gear 53 to rotate. The rotation of the transmission bevel gear 53 causes the connecting plate 54 to rotate, which in turn drives the worm wheel 55 to rotate. The rotation of the worm wheel 55 causes the connecting column 56 to drive the fixed rod 21 to adjust its angle, thereby controlling the gas detector 4 to extend into the area to be detected, making it easier to detect in locations that are difficult for personnel to access.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas detector comprising a fixing plate (1), characterized in that: The inner wall of the fixed plate (1) is provided with an angle adjusting mechanism (5), the inner wall of the fixed plate (1) is rotatably connected with an extension mechanism (2), the top of the extension mechanism (2) is fixedly connected with a fixed shell (3), and the inner wall of the fixed shell (3) is fixedly connected with a gas detector (4). The extension mechanism (2) comprises a fixed rod (21), the inner wall of the fixed rod (21) is rotatably connected to the inner wall of the fixed plate (1), the inner wall of the fixed rod (21) is fixedly connected with a hollow plate (22), the bottom of the hollow plate (22) is fixedly connected with a sliding rod (25), the outer wall of the sliding rod (25) is sleeved with a spring (24), the bottom end of the spring (24) is fixedly connected with a pressing rod (23), the outer wall of the pressing rod (23) is rotatably connected with a rotating rod (28), the outer wall of the rotating rod (28) is fixedly connected with a pawl (26), and the inner wall of the fixed rod (21) is provided with a transmission mechanism (29).

2. A gas detector according to claim 1, characterised in that: The angle adjusting mechanism (5) comprises a rotating shaft (51), the outer wall of the rotating shaft (51) is rotatably connected to the inner wall of the fixed plate (1), one side of the rotating shaft (51) is fixedly connected with a worm (57), the outer wall of the rotating shaft (51) is fixedly connected with two driving bevel gears (52), the inner wall of the fixed plate (1) is rotatably connected with a connecting plate (54), one end of the connecting plate (54) is fixedly connected with a transmission bevel gear (53), and the inner wall of the fixed plate (1) is rotatably connected with a connecting column (56).

3. A gas detector according to claim 2, wherein: The outer wall of the connecting column (56) is fixedly connected with a worm wheel (55), and the outer wall of the worm wheel (55) is meshingly connected with the outer wall of the connecting plate (54).

4. A gas detector according to claim 3, wherein: The outer wall of the connecting column (56) is fixedly connected to the inner wall of the fixed rod (21), and the outer wall of the transmission bevel gear (53) is meshingly connected with the outer wall of the driving bevel gear (52).

5. The gas detector of claim 1, wherein: The transmission mechanism (29) comprises a connecting rod (292), the outer wall of the connecting rod (292) is rotatably connected to the inner wall of the fixed rod (21), the outer wall of the connecting rod (292) is fixedly connected with a ratchet wheel (291), the outer wall of the connecting rod (292) is fixedly connected with a transmission gear (293), and the outer wall of the pawl (26) is clampedly connected with the outer wall of the ratchet wheel (291).

6. A gas detector according to claim 5, wherein: The inner wall of the fixed rod (21) is slidably connected with a rack (294), and the outer wall of the rack (294) is meshingly connected with the outer wall of the transmission gear (293).

7. A gas detector according to claim 6, characterised in that: The top of the rack (294) is fixedly connected with an extension rod (295), and the top of the extension rod (295) is fixedly connected to the bottom of the fixed shell (3).

8. The gas detection instrument of claim 1, wherein: The outer wall of the rotating rod (28) is sleeved with a torsional spring (27), and the bottom of the fixed plate (1) is fixedly connected with two cuffs (6).

Images