A high-precision handheld laser methane gas remote sensor

Abstract

The application belongs to the technical field of methane gas detection, and particularly relates to a high-precision handheld laser methane gas remote detector; the remote detector comprises a detector body and a handle; the handle is hinged to the detector body, and an included angle fixing assembly is arranged at the hinge position; a piston cavity is formed in the handle, a suction port of the piston cavity is located at the bottom end of the handle, a sealing gasket is arranged at the edge of the suction port, a piston is assembled in the piston cavity, the piston is connected with a lifting mechanism in the handle, and the lifting mechanism drives the piston to act so that the handle is adsorbed on the surface of a component through the suction port; the high-precision handheld laser methane gas remote detector provided by the application forms a vacuum fixation with the component surface through the built-in piston adsorption mechanism in the handle, and the magnetic attraction locking of the electromagnet two pairs of lifting frames effectively eliminates mechanical vibration during handheld operation.

Description

Technical Field

[0001] The invention belongs to the technical field of methane gas detection, and in particular relates to a high-precision handheld laser methane gas remote detector. Background Art

[0002] Methane is a key component of city gas, and real-time monitoring of its concentration is crucial for ensuring its safe use. In recent years, laser absorption spectroscopy has become a key tool for measuring gas concentrations. Compared to traditional patrol inspections, this technology can shorten detection time, enhance sensitivity, and improve accuracy. Handheld laser methane remote sensors offer the advantages of high sensitivity and fast response, while saving space and being portable.

[0003] In the prior art, the utility model with announcement number CN213275344U discloses a handheld methane laser telemeter, which includes a gun body, a handle, a laser lens, a lens protection cover, an aiming device, a measuring trigger switch, a button platform, and a touch display screen. The touch display screen is arranged on the top surface of the rear end of the gun body, the button platform is arranged on the rear end side of the gun body, the handle is arranged on the rear end bottom side of the gun body, the laser lens is arranged on the front side of the front end of the gun body, the lens protection cover is sleeved on the front side of the laser lens, the aiming device is arranged on the top surface of the front end of the gun body, and the measuring trigger switch is arranged on the top front side of the handle.

[0004] In field applications, the above-mentioned handheld methane laser telemeter has the disadvantage that the operator has to operate it by hand. Due to factors such as weight and operating habits, the user is prone to hand shaking, which causes the gun body to shake. During the laser detection process, shaking occurs, causing the optical path to shift, affecting the measurement accuracy. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-precision handheld laser methane gas remote detector to solve the problems existing in the prior art.

[0006] The present invention provides the following technical solution: a high-precision handheld laser methane gas remote detector, comprising a remote detector body and a handle; the housing of the remote detector body is hinged to the handle, and an angle fixing component is provided at the hinge position;

[0007] A piston chamber is constructed in the handle, and the suction port of the piston chamber is located at the bottom end of the handle. A sealing gasket is provided on the edge of the suction port. A piston is assembled in the piston chamber, and the piston is connected to the lifting mechanism in the handle. The lifting mechanism drives the piston to move so that the handle can be adsorbed on the surface of the component through the suction port.

[0008] Furthermore, the lifting mechanism includes a lifting frame, a guide frame and a sprocket chain transmission assembly; there are more than two lifting frames, which are distributed on the top of the piston, and the guide frames correspond to the lifting frames one by one, and the guide frames are slidably assembled in the sockets of the lifting frames; the upper ends of the guide frames are fixed to the casing; one of the lifting frames is equipped with a rack three, and the sprocket chain transmission assembly is engaged with the rack three through the driving gear.

[0009] Furthermore, a supporting top plate and electromagnet 2 are fixed in the casing. Electromagnet 2 is located below the supporting top plate. The upper end of the guide frame passes through electromagnet 2 and is fixedly connected to the supporting top plate. Electromagnet 2 can absorb the top of the lifting frame after being energized.

[0010] Furthermore, the sprocket chain transmission assembly includes a driving sprocket, a driven sprocket, a chain and an operating wheel; the driven sprocket and the driving gear share a mounting shaft 2, the driving sprocket and the operating wheel share a mounting shaft 3, and the mounting shaft 2 and the mounting shaft 3 are installed on the handle; the driving sprocket and the driven sprocket are connected by a chain.

[0011] Furthermore, a single hinged ear is provided on the casing, and a double hinged ear is provided on the handle. The single hinged ear extends between the double hinged ears and is penetrated together by a mounting shaft 1; the mounting shaft 1 is fixedly connected to the single hinged ear and the casing; the mounting shaft 1 is rotatably matched with the double hinged ears.

[0012] Furthermore, both ends of the mounting shaft 1 protrude relative to the double hinged ears, and an electromagnet 1 is fixedly mounted on the protruding portion of the mounting shaft 1. The electromagnet 1 can adsorb and fix the double hinged ears after being energized.

[0013] Furthermore, the angle fixing assembly includes a fixed friction plate, a first dynamic friction plate, a dynamic push plate, a second dynamic friction plate and a bolt; a fixed friction plate is fixed to the top of each of the two ear plates of the double-hinged ear, the bolt is inserted into the casing from the outside, the bolt is screwed into the casing thread, and the end of the bolt entering the casing is connected to the first dynamic friction plate and the dynamic push plate, and the first dynamic friction plate and the dynamic push plate are circumferentially free and circumferentially fixed;

[0014] The cantilever bracket on the dynamic push plate passes over the double hinged ears and is connected to the transmission plate. The transmission plate is confined between two guide baffles, and the guide baffles are fixed to the casing.

[0015] A gear 1 is provided below the transmission plate between the two guide baffles, and the gear 1 is meshed with a rack 1 on the bottom surface of the transmission plate. A rack 2 is fixed on the second dynamic friction plate, and the gear 1 is also meshed with the rack 2. When the transmission plate moves, the gear 1 is rubbed through the rack 1, and the gear 1 pushes the second dynamic friction plate through the rack 2; the second dynamic friction plate is connected to the casing through a telescopic rod.

[0016] Furthermore, the laser lens of the telemeter body is located at the end of the casing away from the handle; the charging port, touch screen and operation panel of the telemeter body are exposed on the casing.

[0017] Furthermore, a sliding guide frame is fixedly installed on the top of the casing, a telephoto camera aiming device is slidably installed on the outside of the sliding guide frame, and a zoom lens aiming device is fixedly installed on the top of the telephoto camera aiming device.

[0018] Furthermore, heat dissipation mesh holes are opened on both sides of the casing, and sealing frames are slidably connected on both sides of the casing. A connecting frame is fixedly installed between the sealing frames on both sides, and a solenoid valve is fixedly installed at the bottom of the casing. An internal threaded pipe is installed on the valve port of the solenoid valve, and the internal threaded pipe is used to connect the cooling air path.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The present invention provides a high-precision handheld laser methane gas remote detector. The handle has a built-in piston adsorption mechanism that forms a vacuum fixation with the component surface, and the magnetic attraction locking of the lifting frame by the second electromagnet effectively eliminates mechanical vibration during handheld operation. The housing and the handle adopt an articulated design, combined with the linkage locking mechanism of the first electromagnet, the fixed friction plate and the dynamic friction plate, which can flexibly adjust the pitch angle of the fuselage and ensure the stability of the measurement posture through friction locking. The electromagnet adsorption is combined with the dynamic push plate structure to further fix the hinge angle and effectively suppress the shaking of the fuselage caused by hand shaking. The manual / semi-automatic operation mode of the sprocket chain transmission assembly and the lifting mechanism simplifies the adsorption and fixation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a high-precision handheld laser methane gas remote detector;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a schematic diagram of the telemeter fuselage;

[0024] Figure 4 It is a schematic diagram of the hinge between the housing and the handle;

[0025] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0026] Figure 6 is a schematic diagram of an angle fixing component;

[0027] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8 is a schematic diagram of the cantilever bracket;

[0029] Figure 9 is a schematic diagram of electromagnet 1;

[0030] Figure 10 is a schematic diagram of the lifting mechanism;

[0031] Figure 11 is a schematic diagram of a sprocket and chain transmission assembly;

[0032] Figure 12 A schematic diagram of a lifting frame;

[0033] Figure 13 Schematic diagram of the drive gear.

[0034] In the figure: 1 - housing; 2 - laser lens; 3 - lens protection cover; 4 - charging port; 5 - sliding guide frame; 6 - telephoto camera aiming device; 7 - zoom lens aiming device; 8 - touch screen; 9 - operation panel; 10 - heat dissipation mesh; 11 - sealing frame; 12 - connecting frame 1; 13 - solenoid valve; 14 - internally threaded pipe; 15 - handle; 16 - double hinged ear; 17 - single hinged ear; 18 - mounting shaft 1; 19 - electromagnet 1; 20 - fixed friction plate; 21 - bolt; 22 - first dynamic friction plate; 23 - dynamic push plate; 24 - cantilever bracket; 25-transmission plate; 26-rack one; 27-gear one; 28-guide baffle; 29-rack two; 30-second dynamic friction plate; 31-telescopic rod; 32-movable chamber; 33-mounting ring; 34-rubber sleeve; 35-piston; 36-lifting frame; 37-rack three; 38-guide frame; 39-support top plate; 40-electromagnet two; 41-mounting shaft two; 42-driving gear; 43-driving sprocket; 44-chain; 45-mounting shaft three; 46-operating wheel; 47-jack; 48-reserved groove; 49-sealing gasket; 50-driven sprocket. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] like Figure 1 、 Figure 10 As shown: A handheld laser methane gas remote detector, comprising a remote detector body and a handle 15; the housing 1 of the remote detector body is hinged to the handle 15, and an angle fixing component is provided at the hinge position;

[0037] A piston chamber is constructed in the handle 15, and the suction port of the piston chamber is located at the bottom end of the handle 15. A sealing gasket 49 is provided at the edge of the suction port. A piston 35 is assembled in the piston chamber, and the piston 35 is connected to the lifting mechanism in the handle 15. The lifting mechanism drives the piston 35 to move, so that the handle 15 can be adsorbed on the surface of the component through the suction port.

[0038] like Figure 11 、 Figure 12 、 Figure 13 As shown: the lifting mechanism includes a lifting frame 36, a guide frame 38 and a sprocket chain transmission assembly; there are more than two lifting frames 36, which are distributed on the top of the piston 35, and the guide frames 38 correspond to the lifting frames 36 one by one. The guide frames 38 are slidably assembled in the sockets 47 of the lifting frames 36; the upper ends of the guide frames 38 are fixed to the casing 1; a rack three 37 is installed on one of the lifting frames 36, and the sprocket chain transmission assembly is engaged with the rack three 37 through the drive gear 42.

[0039] Specifically, there are three lifting racks 36 , and the three lifting racks 36 cooperate with the guide rack 38 to slide and guide to restrict the piston 35 to move only up and down.

[0040] like Figure 10 As shown: a support top plate 39 and an electromagnet 2 40 are fixed in the casing 1, the electromagnet 2 40 is located below the support top plate 39, and the upper end of the guide frame 38 passes through the electromagnet 2 40 and is fixedly connected to the support top plate 39; the electromagnet 2 40 can absorb the top of the pulling frame 36 after being energized.

[0041] like Figure 11 、 Figure 13 As shown, the sprocket chain transmission assembly includes a driving sprocket 43, a driven sprocket 50, a chain 44, and an operating wheel 46. The driven sprocket 50 and the driving gear 42 share a mounting shaft 2 41, while the driving sprocket 43 and the operating wheel 46 share a mounting shaft 3 45. The mounting shaft 2 41 and the mounting shaft 3 45 are mounted on the handle 15. The driving sprocket 43 and the driven sprocket 50 are connected by the chain 44. The operating wheel 46 is placed in a reserved groove 48 of the support top plate 39 and the electromagnet 2 40. The operating wheel 46 is exposed from the window of the handle 15. When the operating wheel 46 is rotated, the driving sprocket 43, the driven sprocket 50, and the chain 44 drive the driving gear 42 to rotate, and the rack 3 37 engaged with the driving gear 42 moves up and down. The rack 3 37 drives the lifting frame 36 to move. When the lifting frame 36 moves upward, it drives the piston 35 upward. The handle 15 can be adsorbed on the surface of the component through the suction port, forming a temporary fixed fulcrum, which greatly reduces the shaking during hand-held operation.

[0042] like Figure 4As shown: a single hinged ear 17 is provided on the housing 1, and a double hinged ear 16 is provided on the handle 15. The single hinged ear 17 extends between the double hinged ears 16 and is penetrated together by a mounting shaft 18; the mounting shaft 18 is fixedly connected to the single hinged ear 17 and the housing 1; the mounting shaft 18 is rotatably matched with the double hinged ears 16.

[0043] A rubber sleeve 34 is sleeved at the hinge position between the casing 1 and the handle 15, and a mounting ring 33 is fixedly sleeved on the top outer side of the handle 15. The bottom tube mouth of the rubber sleeve 34 is connected to the mounting ring 33, and the top tube mouth is connected to the casing 1; when the handle 15 rotates relative to the casing 1, the rubber sleeve 34 can be deformed to meet the movement requirements of the double hinged ears 16 and the single hinged ears 17. The setting of the rubber sleeve 34 can prevent the double hinged ears 16 and the single hinged ears 17 from causing damage to the hands of the staff.

[0044] like Figure 9 As shown: both ends of the mounting shaft 18 protrude relative to the double hinged ear 16, and an electromagnet 19 is fixedly installed on the protruding part of the mounting shaft 18. When the electromagnet 19 is powered off, there is no magnetic attraction. The electromagnet 19 rotates with the mounting shaft 18 and the single hinged ear 17. When the electromagnet 19 is energized, it can adsorb and fix the double hinged ear 16. The magnetic attraction between the electromagnet 19 and the double hinged ear 16 hinders the rotation of the single hinged ear 17, that is, the angle between the housing 1 and the handle 15 is fixed.

[0045] The magnetic locking structure between the electromagnet 19 and the double hinged ears 16 has low strength and is used to temporarily fix the angle between the housing 1 and the handle 15; when the angle between the housing 1 and the handle 15 needs to be fixed for a long time, an angle fixing component is used.

[0046] like Figure 6 、 Figure 7 、 Figure 8 As shown, the angle fixing assembly includes a fixed friction plate 20, a first dynamic friction plate 22, a dynamic push plate 23, a second dynamic friction plate 30, and a bolt 21. A fixed friction plate 20 is fixed to the top of each of the two ear plates of the double hinged ear 16. The bolt 21 penetrates into the housing 1 from the outside and is screwed into the housing 1. The end of the bolt 21 entering the housing 1 is connected to the first dynamic friction plate 22 and the dynamic push plate 23. The first dynamic friction plate 22 and the dynamic push plate 23 are circumferentially free and circumferentially fixed.

[0047] The cantilever bracket 24 on the dynamic push plate 23 passes over the double hinge ears 16 and is connected to the transmission plate 25. The transmission plate 25 is confined between two guide baffles 28, and the guide baffles 28 are fixed to the housing 1.

[0048] A gear one 27 is arranged below the transmission plate 25 between the two guide baffles 28, the gear one 27 is engaged with the gear rack one 26 on the bottom surface of the transmission plate 25, the gear rack two 29 is fixed on the second dynamic friction plate 30, the gear one 27 is also engaged with the gear rack two 29, the transmission plate 25 moves to rub the gear one 27 through the gear rack one 26, the gear one 27 pushes the second dynamic friction plate 30 through the gear rack two 29; the second dynamic friction plate 30 is connected with the machine shell 1 through the telescopic rod 31.

[0049] The rotating bolt 21 moves the bolt 21 to the fixed friction plate 20, one end of the rotating bolt 21 connected with the first dynamic friction plate presses the left fixed friction plate 20, and the left fixed friction plate 20 is limited; at the same time, the dynamic push plate 23 pushes the cantilever support 24 to move away from the bolt 21, the transmission plate 25 and the gear rack one 26 on the transmission plate 25 move, the gear rack one 26 drives the gear one 27 to rotate, the gear one 27 drives the gear rack two 29 to move, after changing the pushing direction through the gear one 27, the gear rack two 29 pushes the second dynamic friction plate 30 to press the right fixed friction plate 20, and the right fixed friction plate 20 is limited, so only the rotating bolt 21 needs to be operated to rotate, so that the two fixed friction plates 20 are simultaneously limited, the double-hinged ears 16 fixedly connected with the fixed friction plates 20 are limited and cannot rotate, and the handle 15 cannot rotate; similarly, the rotating bolt 21 is reversely rotated, so that the first dynamic friction plate 22 and the second dynamic friction plate 30 simultaneously move away from the two fixed friction plates 20, the fixed friction plates 20 lose the limitation, and the handle 15 can freely rotate.

[0050] In summary, by operating the rotating bolt 21, the working state of the included angle fixing assembly can be changed, so that the handle 15 is released from the limitation and can rotate, or the handle 15 is limited and cannot rotate.

[0051] As shown in Figure 4 , Figure 5 , two movable cavities 32 are formed at the bottom of the machine shell 1, the first dynamic friction plate 22 and the second dynamic friction plate 30 are arranged in the two movable cavities 32 respectively, the cantilever support 24 movably penetrates the machine shell 1, the two ends of the cantilever support 24 are arranged in the two movable cavities 32 respectively, the dynamic push plate 23 can only move horizontally and cannot rotate under the limiting action of the cantilever support 24, and the first dynamic friction plate 22 and the second dynamic friction plate 30 are arranged in the two movable cavities 32 respectively, and have sufficient movement space.

[0052] As shown in Figure 1 , the laser lens 2 of the telemeter body is located at one end of the machine shell 1 away from the handle 15, the lens protection cover 3 is sleeved outside the laser lens 2, and the lens protection cover 3 provides certain protection for the laser lens 2 when the laser lens 2 is not used; the charging interface 4, the touch display screen 8 and the operation panel 9 of the telemeter body are exposed to the machine shell 1.

[0053] As Figure 3 As shown in the figure: the top of the shell 1 is fixedly installed with a sliding guide frame 5, the outer side of the sliding guide frame 5 is slidably installed with a long-focus camera aiming device 6, and the top of the long-focus camera aiming device 6 is fixedly installed with a zoom lens aiming device 7; there is a large sliding resistance between the long-focus camera aiming device 6 and the sliding guide frame 5, and after a certain force is applied to the long-focus camera aiming device 6, the long-focus camera aiming device 6 can slide under the guidance of the sliding guide frame 5, and the position of the zoom lens aiming device 7 fixedly installed at the top of the long-focus camera aiming device 6 is adjusted.

[0054] As shown in the figure: Figure 1 , Figure 2 As shown in the figure: the two sides of the shell 1 are provided with heat dissipation mesh holes 10 for dissipating heat generated by the components in the shell 1, and the two sides of the shell 1 are slidably connected with sealing frames 11, and there is a large sliding resistance between the sealing frames 11 and the shell 1. A certain pushing force is applied to the sealing frame 11, and the sealing frame 11 can be moved, the sealing frame 11 covers the heat dissipation mesh hole 10, in the non-working state, prevents dust from entering from the heat dissipation mesh hole 10, the two sealing frames 11 are fixedly installed with a connecting frame 12, and the sealing frames 11 are synchronously pushed through the connecting frame 12, the bottom of the shell 1 is fixedly installed with an electromagnetic valve 13, and the valve port of the electromagnetic valve 13 is installed with an internal threaded pipe 14, and the internal threaded pipe 14 is used to connect the cooling gas circuit; the cooling gas circuit blows gas into the shell 1, and the gas is discharged from the heat dissipation mesh hole 10 provided on the outer side of the shell 1, and in extreme environment, the heat dissipation rate is increased.

[0055] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A handheld laser methane gas remote detector, characterized by: It comprises a telemeter body and a handle (15); the housing (1) of the telemeter body is hinged to the handle (15), and an angle fixing component is provided at the hinge position; A piston cavity is constructed in the handle (15), a suction port of the piston cavity is located at the bottom end of the handle (15), a sealing gasket (49) is provided at the edge of the suction port, a piston (35) is assembled in the piston cavity, and the piston (35) is connected to the lifting mechanism in the handle (15), and the lifting mechanism drives the piston (35) to move so that the handle (15) can be adsorbed on the surface of the component through the suction port; The lifting mechanism includes a lifting frame (36), a guide frame (38) and a sprocket chain transmission assembly; there are more than two lifting frames (36), the lifting frames (36) are distributed on the top of the piston (35), the guide frames (38) correspond to the lifting frames (36) one by one, and the guide frames (38) are slidably assembled in the sockets (47) of the lifting frames (36); the upper ends of the guide frames (38) are fixed to the housing (1); a rack three (37) is installed on one of the lifting frames (36), and the sprocket chain transmission assembly is engaged with the rack three (37) through the driving gear (42); A supporting top plate (39) and an electromagnet 2 (40) are fixed in the housing (1). The electromagnet 2 (40) is located below the supporting top plate (39). The upper end of the guide frame (38) passes through the electromagnet 2 (40) and is fixedly connected to the supporting top plate (39). When the electromagnet 2 (40) is energized, it can absorb the top of the lifting frame (36). The sprocket chain transmission assembly includes a driving sprocket (43), a driven sprocket (50), a chain (44) and an operating wheel (46); the driven sprocket (50) and the driving gear (42) share a mounting shaft 2 (41), the driving sprocket (43) and the operating wheel (46) share a mounting shaft 3 (45), and the mounting shaft 2 (41) and the mounting shaft 3 (45) are mounted on the handle (15); the driving sprocket (43) and the driven sprocket (50) are connected by a chain (44); The housing (1) is provided with a single hinged ear (17), and the handle (15) is provided with a double hinged ear (16). The single hinged ear (17) extends between the double hinged ears (16) and is connected together by a mounting shaft (18); the mounting shaft (18) is fixedly connected to the single hinged ear (17) and the housing (1); the mounting shaft (18) is rotatably matched with the double hinged ears (16); The two ends of the installation shaft (18) protrude relative to the double hinged ears (16), and the protruding portion of the installation shaft (18) is fixedly mounted with an electromagnet (19), which can adsorb and fix the double hinged ears (16) after being energized. The angle fixing assembly includes a fixed friction plate (20), a first dynamic friction plate (22), a dynamic push plate (23), a second dynamic friction plate (30) and a bolt (21); a fixed friction plate (20) is fixed to the top of each of the two ear plates of the double hinged ear (16); the bolt (21) penetrates into the casing (1) from the outside, the bolt (21) is screwed into the casing (1), and the end of the bolt (21) entering the casing (1) is connected to the first dynamic friction plate (22) and the dynamic push plate (23); the first dynamic friction plate (22) and the dynamic push plate (23) are circumferentially free and circumferentially fixed; The cantilever bracket (24) on the dynamic push plate (23) passes over the double hinged ears (16) and is connected to the transmission plate (25). The transmission plate (25) is limited between two guide baffles (28), and the guide baffles (28) are fixed on the housing (1); A gear 1 (27) is provided below the transmission plate (25) between the two guide baffles (28). The gear 1 (27) is meshed with a rack 1 (26) on the bottom surface of the transmission plate (25). A rack 2 (29) is fixed to the second dynamic friction plate (30). The gear 1 (27) is also meshed with the rack 2 (29). When the transmission plate (25) moves, the gear 1 (27) is rubbed through the rack 1 (26). The gear 1 (27) pushes the second dynamic friction plate (30) through the rack 2 (29); the second dynamic friction plate (30) is connected to the housing (1) through a telescopic rod (31).

2. A handheld laser methane gas remote detector according to claim 1, characterized in that: The laser lens (2) of the telemeter body is located at one end of the housing (1) away from the handle (15); the charging interface (4), touch screen (8) and operation panel (9) of the telemeter body are exposed outside the housing (1).

3. A handheld laser methane gas remote detector according to claim 2, characterized in that: A sliding guide frame (5) is fixedly mounted on the top of the housing (1), a telephoto camera aiming device (6) is slidably mounted on the outer side of the sliding guide frame (5), and a zoom lens aiming device (7) is fixedly mounted on the top of the telephoto camera aiming device (6).

4. A handheld laser methane gas remote detector according to claim 3, characterized in that: Both sides of the housing (1) are provided with heat dissipation mesh holes (10), both sides of the housing (1) are slidably connected with sealing frames (11), a connecting frame (12) is fixedly installed between the sealing frames (11) on both sides, a solenoid valve (13) is fixedly installed at the bottom of the housing (1), and an internal threaded pipe (14) is installed on the valve port of the solenoid valve (13), and the internal threaded pipe (14) is used to connect the cooling air path.

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