Portable telescopic gas detector and detection method

Abstract

The invention relates to the field of gas detectors. The invention discloses a portable telescopic fuel gas detector and a detection method, and aims to solve the problems that a probe of an existing detector generally extends towards the outer wall of a fuel gas pipeline for detection, the front end of the probe is blocked by an obstacle in the extending process, and the fuel gas detection effect of the probe is affected. And the probe cannot be in contact with the outer wall of the gas pipeline, so that the detection precision of the probe is influenced. When the protruding shape of the protruding disc makes contact with the touch frame at the bottom of the probe, the probe can be driven to deflect on the telescopic frame in the direction towards the gas pipeline, then the probe can make contact with the portion, needing to be detected, of the gas pipeline, and then gas detection work in the gas pipeline is achieved.

Description

Technical Field

[0001] The invention relates to the field of gas detectors, in particular to a portable and retractable gas detector and a detection method. Background Art

[0002] The modern gas industry was developed on the basis of the city gas industry in the 19th century, and the process was that natural gas gradually replaced city gas. Subsequently, gas fields were discovered in various countries around the world, and the discovery of gas fields marked the beginning of modern gas industries in various countries. Natural gas gradually replaced artificial gas in cities. Gas pipelines can be divided into three categories: gas gathering pipelines (from wellhead to purification plant), gas transmission trunk lines (export of purification plant to city gate station or factory), and gas distribution pipelines (city gate station to users). According to data from relevant departments, the output of artificial gas, pipeline length and gas users in the city are declining year by year, and the pipeline length and gas users of liquefied petroleum gas are also declining year by year. However, the length of urban gas pipelines, gas supply and gas users are increasing year by year. With the annual increase in urban gas pipelines, the daily inspection and operation and maintenance of gas pipelines are also extremely huge.

[0003] The existing patent (announcement number: CN216207387U) discloses a portable retractable gas detector, including a handle, a retractable assembly, a power supply assembly and a bendable and flexible detection assembly. The retractable assembly includes a plurality of continuously arranged retractable parts. The aperture of the retractable parts becomes smaller and smaller in the arrangement direction of the retractable parts. Among any two adjacent retractable parts, the retractable part with a smaller aperture can slide to the inside of the retractable part with a larger aperture for storage, so that the entire retractable assembly can be completely stored inside the handle. When in use, the retractable parts are unfolded one by one, extending the overall length of the device. The bendable and flexible detection assembly can be bent in any direction, so that it can touch the areas of the gas pipeline that are difficult to touch, so that the staff can check whether there are leaks in the indoor gas pipeline and the gas facilities in the outdoor gas station, and promptly detect damage to the gas pipeline and facilities, thereby reducing the risk of gas explosion. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: the existing detectors usually extend the probe toward the outer wall of the gas pipeline for detection, and during the extension process, the front end of the probe will be blocked by obstacles, which will affect the effect of the probe on gas detection, and the probe cannot contact the outer wall of the gas pipeline, which affects the detection accuracy of the probe. Summary of the invention

[0004] The purpose of the present invention is to provide a portable retractable gas detector and a detection method to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a portable retractable gas detector, comprising a shell frame, a retractable component is slidably arranged in the shell frame, an adjustment component is rotatably arranged on the retractable component, a driving component is also rotatably arranged on the side wall of the shell frame, the driving component is in transmission cooperation with the retractable component, a detection component is also arranged on the top of the retractable component, and the detection component is rotatably cooperated with the retractable component.

[0005] Preferably, the telescopic assembly includes a spiral rod rotatably arranged at the bottom of the outer shell frame, a mobile frame is slidably arranged on the inner wall of the outer shell frame, the mobile frame and the spiral rod are spirally matched, and conveying disks arranged opposite to each other are arranged on both side walls of the mobile frame, a conveying belt is connected between the two conveying disks located on the outer wall of one side of the mobile frame, the side of the conveying belt close to the inner wall of the outer shell frame is connected to the inner wall of the outer shell frame, and the side of the conveying belt away from the inner wall of the outer shell frame is connected to the telescopic frame.

[0006] Preferably, the adjusting assembly includes a rotating rod rotatably arranged on the top of the telescopic frame, a rotating disk is fixedly connected to the rotating rod, a driving disk is rotatably arranged on the inner wall of the outer shell frame, and side walls of the outer shell frame are provided with corresponding limit grooves, and limit rods are arranged in both limit grooves, and a limit block is rotatably arranged at one end of the limit rod toward the outer wall of the outer shell frame, the limit block is slidably matched with the outer wall of the outer shell frame, and a tension spring is also arranged between the limit block and the bottom of the outer shell frame, and the end of the limit rod away from the limit block is fixedly connected to the transmission disk, and a connecting belt is sleeved between the rotating disk, the driving disk and the two transmission disks.

[0007] Preferably, the driving assembly includes a driving rod rotatably arranged on the outer wall of the outer shell frame, one end of the driving rod is fixedly connected to a rotating handle, a bayonet sleeve rod is clamped on the driving rod, a ring groove is provided on the bayonet sleeve rod, an adjusting rod is rotatably arranged on the outer wall of the outer shell frame, an adjusting disk is fixedly connected to the adjusting rod, a spiral strip arranged in a spiral shape around the circumference of the adjusting disk, and the spiral strip is in a sliding groove on the bayonet sleeve rod.

[0008] Preferably, the drive assembly also includes a first bevel gear and a second bevel gear rotatably arranged on the inner wall of the outer shell frame, the center of the first bevel gear is on the same axis as the center of the drive disk and the bayonet sleeve rod, and the bayonet sleeve rod is respectively engaged with the first bevel gear and the drive disk, and the second bevel gear is fixedly connected to the top of the spiral rod.

[0009] Preferably, the detection assembly includes a convex plate fixedly connected to the rotating rod, the opposite ends of the convex plate are convex, a probe is hingedly provided on the top of the telescopic frame, a torsion spring is provided at the hinged end of the probe and the telescopic frame, and a touch frame is fixedly connected to the bottom of the probe, and the raised portion on the convex plate abuts against the touch frame on the probe.

[0010] Preferably, the detection assembly also includes a hinged rod rotatably arranged on the top of the telescopic frame, the hinged rod is fixedly connected to a cover frame, the cover frame is located at the top of the probe, both ends of the hinged rod are fixedly connected to a limiting cylinder, both limiting cylinders are provided with a spiral bevel groove, and a resistance rod is slidably arranged on the outer wall of the telescopic frame located opposite to the convex plate, one end of the resistance rod is in contact with a raised portion of the convex plate, and the end of the resistance rod away from the convex plate is fixedly connected to a connecting frame, a pressure spring is sleeved on the resistance rod, and both ends of the pressure spring are respectively connected to the outer walls of the connecting frame and the telescopic frame, and the connecting frame is provided with a resistance block that contacts the spiral bevel groove on the limiting cylinder.

[0011] Preferably, the method for using the portable retractable gas detector comprises the following steps: S1: When the operator controls the driving component to extend the telescopic component, the rotation of the spiral rod will cause the moving frame to slide on the inner wall of the outer shell frame. During the movement of the moving frame, one end of the conveying belt is limited by the inner wall of the outer shell frame. When the moving frame moves, the conveying belt will move to drive the two conveying discs to rotate, and the telescopic frame arranged on the other side of the conveying belt away from the outer shell frame will extend toward the gas pipeline to be inspected, so that the detection component arranged on the telescopic component can contact the part of the gas pipeline to be inspected for inspection. In addition, this telescopic method can make the telescopic distance of the detection component longer, which is convenient for operators to use and easy to carry. S2: When the operator controls the telescopic assembly to telescopically move through the driving assembly, the initial state of the bayonet sleeve rod is engaged with the first bevel gear, and the operator drives the driving rod to rotate by rotating the handle. The driving rod rotates to rotate the bayonet sleeve rod, and the bayonet sleeve rod drives the first bevel gear to rotate the second bevel gear, and then the spiral rod rotates through the second bevel gear so that the telescopic assembly can drive the detection assembly to extend toward the gas pipeline for detection. When the detection assembly extends to the side of the gas pipeline, the operator rotates the adjusting rod to rotate the adjusting disk. The spiral strips provided on the adjusting disk will conflict with the annular grooves on the bayonet sleeve rod, and then the bayonet sleeve rod slides on the driving rod, so that the bayonet sleeve rod and the driving disk are engaged. At this time, when the operator rotates the rotating handle, the driving rod will be driven to rotate the driving disk. The rotation of the driving disk can facilitate the subsequent driving of the detection assembly to perform detection operations on the gas pipeline. Under the drive of the driving assembly, the operator can conveniently switch the telescopic assembly and the adjustment assembly, which is convenient for the operator to use. S3: When the driving rod rotates to make the bayonet sleeve rod drive the driving disc to rotate, the driving disc will drive the connecting belt to rotate the rotating disc and the two transmission discs, and the rotating disc will rotate the rotating rod, and the rotating rod will drive the convex disc to rotate. When the convex disc rotates, when the convex shape of the convex disc contacts the touch frame at the bottom of the probe, the probe will be driven to deflect toward the gas pipeline on the telescopic frame, so that the probe can contact the part of the gas pipeline to be detected, thereby realizing the gas detection operation in the gas pipeline; S4: When the telescopic frame extends toward the direction of the gas pipeline, the rotating rod drives the rotating disk to move, and the two transmission disks drive the limit rod to move in the limit groove on the outer shell frame, which will not affect the subsequent rotation of the drive disk. The rotation of the rotating disk is driven by the connecting belt, so that the telescopic component can be moved to various positions of the gas pipeline. The probe can be deflected toward the outer wall of the gas pipeline by adjusting the component for detection, which is convenient for operators to use; S5: When the operator is inspecting the gas pipeline, due to the influence of the operating environment, when the probe is extended in the direction of the gas pipeline, the probe is affected by foreign objects, which will affect the effect of gas detection. When the telescopic frame is extended in the direction of the gas pipeline, the cover frame can prevent the probe from being interfered with by foreign objects. When it reaches the detection part of the gas pipeline, the rotation of the cam will cause the resistance rod to move driven by the pressure spring. At this time, the movement of the connecting frame on the resistance rod will cause the resistance block to contact the spiral bevel groove on the limit cylinder, and then the articulated rod will rotate under the restriction of the spiral bevel groove. The rotation of the articulated rod drives the cover frame to deflect, so that the probe can be extended in the direction of the gas pipeline, thereby realizing the gas detection operation.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, when the operator controls the driving assembly to extend the telescopic assembly, the rotation of the spiral rod will cause the moving frame to slide on the inner wall of the outer shell frame. During the movement of the moving frame, one end of the conveyor belt is limited by the inner wall of the outer shell frame. Therefore, when the moving frame moves, the conveyor belt will move to drive the two conveyor discs to rotate, and the telescopic frame arranged on the other side of the conveyor belt away from the outer shell frame will extend toward the gas pipeline to be inspected, so that the detection assembly arranged on the telescopic assembly can contact the part of the gas pipeline to be inspected for inspection, and this telescopic method can make the telescopic distance of the detection assembly longer, which is convenient for operators to use and easy to carry.

[0013] When the operator controls the telescopic assembly to move telescopically through the driving assembly, the initial state of the bayonet sleeve rod is engaged with the first bevel gear, and the operator drives the driving rod to rotate by rotating the handle. The driving rod rotates to rotate the bayonet sleeve rod, and the bayonet sleeve rod drives the first bevel gear to rotate the second bevel gear, and then the spiral rod rotates through the second bevel gear so that the telescopic assembly can drive the detection assembly to extend toward the gas pipeline for detection. When the detection assembly extends to the side of the gas pipeline, the operator rotates the adjusting rod to rotate the adjusting disk, and the spiral strip provided on the adjusting disk will conflict with the annular groove on the bayonet sleeve rod, thereby causing the bayonet sleeve rod to slide on the driving rod, so that the bayonet sleeve rod is engaged with the driving disk. At this time, when the operator rotates the rotating handle, the driving rod is driven to rotate the driving disk. The rotation of the driving disk can facilitate the subsequent driving of the detection assembly to perform detection operations on the gas pipeline, and under the drive of the driving assembly, it is convenient for the operator to switch the telescopic assembly and the adjusting assembly, which is convenient for the operator to use.

[0014] In the present invention, when the driving rod rotates to make the bayonet sleeve rod drive the driving disk to rotate, the rotation of the driving disk will drive the connecting belt to rotate the rotating disk and the two transmission disks, and the rotation of the rotating disk will make the rotating rod rotate, and the rotation of the rotating rod will drive the cam to rotate, and when the cam rotates, when the protrusion of the cam contacts the touch frame at the bottom of the probe, the probe will be driven to deflect toward the gas pipeline on the telescopic frame, so that the probe can contact the part of the gas pipeline to be detected, thereby realizing the gas detection operation in the gas pipeline.

[0015] In the present invention, when the telescopic frame is extended toward the direction of the gas pipeline, the rotating rod drives the rotating disk to move, and the two transmission disks drive the limit rod to move in the limit groove on the outer shell frame, which will not affect the subsequent rotation of the driving disk. The rotation of the rotating disk is driven by the connecting belt, so that the telescopic component can be moved to various positions of the gas pipeline. The probe can be deflected toward the outer wall of the gas pipeline for detection by adjusting the component, which is convenient for operators to use.

[0016] In the present invention, when the operator inspects the gas pipeline, due to the influence of the operating environment, when the probe extends in the direction of the gas pipeline, the probe is affected by foreign objects, which will affect the effect of gas detection. Furthermore, when the telescopic frame extends in the direction of the gas pipeline, the cover frame can prevent the probe from being interfered with by foreign objects. When the detection position of the gas pipeline is reached, the rotation of the convex disc will cause the resistance rod to move driven by the pressure spring. At this time, the movement of the connecting frame on the resistance rod will cause the resistance block to contact the spiral bevel groove on the limit cylinder. Furthermore, the articulated rod is rotated under the restriction of the spiral bevel groove. The rotation of the articulated rod drives the cover frame to deflect, so that the probe can be extended in the direction of the gas pipeline, thereby realizing the gas detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a sectional view of the three-dimensional structure of the present invention; Figure 3 The local three-dimensional structure of the present invention is cut away Figure 1 ; Figure 4 The local three-dimensional structure of the present invention is cut away Figure 2 ; Figure 5 It is a schematic diagram of the three-dimensional structure of the driving component of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the detection component of the present invention; Figure 7 It is a schematic diagram of the local three-dimensional structure of the detection component of the present invention.

[0018] In the figure: 1. housing frame; 2. telescopic assembly; 21. screw rod; 22. moving frame; 23. conveying plate; 24. conveying belt; 25. telescopic frame; 3. adjustment assembly; 31. rotating rod; 32. rotating plate; 33. driving plate; 34. limiting groove; 35. limiting rod; 36. limiting block; 37. tension spring; 38. transmission plate; 39. connecting belt; 4. driving assembly; 41. driving rod; 42. rotating handle ; 43. Bayonet sleeve rod; 44. Ring groove; 45. Adjustment rod; 46. Adjustment disk; 47. Spiral strip; 48. First bevel gear; 49. Second bevel gear; 5. Detection assembly; 51. Boss; 52. Probe; 53. Torsion spring; 54. Touch frame; 55. Articulated rod; 56. Cover frame; 57. Limiting cylinder; 58. Spiral inclined groove; 59. Resistance rod; 510. Connecting frame; 511. Pressure spring; 512. Resistance block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 7The present invention provides a technical solution: a portable retractable gas detector, comprising an outer shell frame 1, a retractable component 2 is slidably arranged in the outer shell frame 1, an adjustment component 3 is rotatably arranged on the retractable component 2, a driving component 4 is also rotatably arranged on the side wall of the outer shell frame 1, the driving component 4 is in transmission cooperation with the retractable component 2, a detection component 5 is also arranged on the top of the retractable component 2, and the detection component 5 is in rotation cooperation with the retractable component 2.

[0021] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the telescopic assembly 2 includes a spiral rod 21 rotatably arranged at the bottom of the outer shell frame 1, a mobile frame 22 is slidably arranged on the inner wall of the outer shell frame 1, and the mobile frame 22 and the spiral rod 21 are spirally matched. Conveying trays 23 arranged opposite to each other are arranged on the two side walls of the mobile frame 22, and a conveying belt 24 is connected between the two conveying trays 23 located on the outer wall of one side of the mobile frame 22. The side of the conveying belt 24 close to the inner wall of the outer shell frame 1 is connected to the inner wall of the outer shell frame 1, and the side of the conveying belt 24 away from the inner wall of the outer shell frame 1 is connected to the telescopic frame 25; When the operator controls the driving component 4 to extend the telescopic component 2, the rotation of the spiral rod 21 will cause the moving frame 22 to slide on the inner wall of the outer shell frame 1. During the movement of the moving frame 22, one end of the conveyor belt 24 is limited by the inner wall of the outer shell frame 1. Therefore, when the moving frame 22 moves, the conveyor belt 24 will move and drive the two conveyor plates 23 to rotate. The telescopic frame 25 arranged on the other side of the conveyor belt 24 away from the outer shell frame 1 will extend toward the gas pipeline to be inspected, so that the detection component 5 arranged on the telescopic component 2 can contact the part of the gas pipeline to be inspected for inspection. In addition, this telescopic method can make the telescopic distance of the detection component 5 longer, which is convenient for operators to use and easy to carry.

[0022] In this embodiment, Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the adjustment assembly 3 includes a rotating rod 31 rotatably arranged on the top of the telescopic frame 25, a rotating disk 32 is fixedly connected to the rotating rod 31, a driving disk 33 is rotatably arranged on the inner wall of the outer shell frame 1, and a limiting groove 34 is provided on the side wall of the outer shell frame 1. Limiting rods 35 are arranged in two limiting grooves 34. A limiting block 36 is rotatably arranged at one end of the limiting rod 35 toward the outer wall of the outer shell frame 1. The limiting block 36 is slidably matched with the outer wall of the outer shell frame 1. A tension spring 37 is further arranged between the limiting block 36 and the bottom of the outer shell frame 1, and a transmission disk 38 is fixedly connected to the end of the limiting rod 35 away from the limiting block 36. A connecting belt 39 is sleeved between the rotating disk 32 and the driving disk 33 and the two transmission disks 38. The driving assembly 4 comprises a driving rod 41 rotatably arranged on the outer wall of the outer shell frame 1, one end of the driving rod 41 is fixedly connected to a rotating handle 42, a bayonet sleeve rod 43 is clamped on the driving rod 41, and a ring groove 44 is provided on the bayonet sleeve rod 43, an adjusting rod 45 is rotatably arranged on the outer wall of the outer shell frame 1, an adjusting disk 46 is fixedly connected to the adjusting rod 45, and a spiral strip 47 is spirally arranged around the circumference of the adjusting disk 46, and the spiral strip 47 is in a slide groove on the bayonet sleeve rod 43; The driving assembly 4 further comprises a first bevel gear 48 and a second bevel gear 49 rotatably arranged on the inner wall of the housing frame 1, the center of the first bevel gear 48 is on the same axis as the center of the driving disk 33 and the bayonet sleeve rod 43, and the bayonet sleeve rod 43 is engaged with the first bevel gear 48 and the driving disk 33 respectively, and the second bevel gear 49 is fixedly connected to the top of the spiral rod 21; When the operator controls the telescopic assembly 2 to telescopically move through the driving assembly 4, the bayonet sleeve rod 43 is initially engaged with the first bevel gear 48, and the operator drives the driving rod 41 to rotate by rotating the handle 42. The driving rod 41 rotates to rotate the bayonet sleeve rod 43, and the bayonet sleeve rod 43 drives the first bevel gear 48 to rotate the second bevel gear 49, and then the spiral rod 21 rotates through the second bevel gear 49, so that the telescopic assembly 2 can drive the detection assembly 5 to extend toward the direction of the gas pipeline for detection. When the detection assembly 5 extends to the side of the gas pipeline, the operator rotates the control handle 42 to rotate the driving rod 41. The joint rod 45 rotates the adjusting disk 46, and the spiral strip 47 provided on the adjusting disk 46 will interfere with the annular groove 44 on the bayonet sleeve rod 43, thereby causing the bayonet sleeve rod 43 to slide on the driving rod 41, so that the bayonet sleeve rod 43 and the driving disk 33 are engaged. At this time, when the operator turns the rotating handle 42, the driving rod 41 will be driven to rotate the driving disk 33. The rotation of the driving disk 33 can facilitate the subsequent detection operation of the detection component 5 on the gas pipeline. Under the drive of the driving component 4, the operator can conveniently switch the telescopic component 2 and the adjustment component 3, which is convenient for the operator to use.

[0023] In this embodiment, Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the detection assembly 5 includes a convex plate 51 fixedly connected to the rotating rod 31, and the opposite ends of the convex plate 51 are convex. A probe 52 is hingedly provided at the top of the telescopic frame 25, and a torsion spring 53 is provided at the hinged end of the probe 52 and the telescopic frame 25. A touch frame 54 is fixedly connected to the bottom of the probe 52, and the convex part on the convex plate 51 abuts against the touch frame 54 on the probe 52; When the driving rod 41 rotates to make the bayonet sleeve rod 43 drive the driving disc 33 to rotate, the driving disc 33 rotates and drives the connecting belt 39 to rotate the rotating disc 32 and the two transmission discs 38. When the rotating disc 32 rotates, the rotating rod 31 rotates. The rotating rod 31 rotates and drives the convex disc 51 to rotate. When the convex disc 51 rotates, when the protrusion of the convex disc 51 contacts the touch frame 54 at the bottom of the probe 52, the probe 52 is driven to deflect toward the gas pipeline on the telescopic frame 25, so that the probe 52 can contact the part of the gas pipeline to be detected, thereby realizing the gas detection operation in the gas pipeline; When the telescopic frame 25 extends toward the direction of the gas pipeline, the rotating rod 31 drives the rotating disk 32 to move, and the two transmission disks 38 drive the limiting rod 35 to move in the limiting groove 34 on the outer shell frame 1, which will not affect the subsequent rotation of the driving disk 33. The rotation of the rotating disk 32 is driven by the connecting belt 39, so that the telescopic component 2 can be moved to various positions of the gas pipeline. The probe 52 can be deflected toward the outer wall of the gas pipeline for detection by adjusting the component 3, which is convenient for operators to use.

[0024] In this embodiment, Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the detection assembly 5 also includes a hinged rod 55 rotatably arranged on the top of the telescopic frame 25, and a cover frame 56 is fixedly connected to the hinged rod 55, and the cover frame 56 is located at the top of the probe 52. Both ends of the hinged rod 55 are fixedly connected to the limiting cylinder 57, and the two limiting cylinders 57 are provided with a spiral bevel 58. A resistance rod 59 is slidably arranged on the outer wall of the telescopic frame 25 located opposite to the convex plate 51, and one end of the resistance rod 59 is in contact with the raised part of the convex plate 51, and the end of the resistance rod 59 away from the convex plate 51 is fixedly connected to a connecting frame 510, and a pressure spring 511 is sleeved on the resistance rod 59, and the two ends of the pressure spring 511 are respectively connected to the connecting frame 510 and the outer wall of the telescopic frame 25, and the connecting frame 510 is provided with a resistance block 512 that contacts the spiral bevel 58 on the limiting cylinder 57; When the operator inspects the gas pipeline, due to the influence of the operating environment, when the probe 52 extends in the direction of the gas pipeline, the probe 52 is affected by foreign objects, which will affect the effect of gas detection. Then, when the telescopic frame 25 extends in the direction of the gas pipeline, the cover frame 56 can prevent foreign objects from interfering with the probe 52. When it reaches the detection position of the gas pipeline, the rotation of the convex disc 51 will cause the resistance rod 59 to move driven by the pressure spring 511. At this time, the movement of the connecting frame 510 on the resistance rod 59 will cause the resistance block 512 to contact the spiral bevel groove 58 on the limiting cylinder 57, and then the hinged rod 55 will rotate under the restriction of the spiral bevel groove 58. The rotation of the hinged rod 55 drives the cover frame 56 to deflect, so that the probe 52 can extend in the direction of the gas pipeline, thereby realizing the gas detection operation.

[0025] The use method and advantages of the present invention: The use method of the portable retractable gas detector, the working process is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown: S1: When the operator controls the driving component 4 to extend the telescopic component 2, the rotation of the spiral rod 21 will cause the moving frame 22 to slide on the inner wall of the outer shell frame 1. During the movement of the moving frame 22, one end of the conveying belt 24 is limited by the inner wall of the outer shell frame 1. When the moving frame 22 moves, the conveying belt 24 will move to drive the two conveying plates 23 to rotate, and the telescopic frame 25 arranged on the other side of the conveying belt 24 away from the outer shell frame 1 will extend toward the gas pipeline to be detected, so that the detection component 5 arranged on the telescopic component 2 can contact the part of the gas pipeline to be detected for detection, and this telescopic method can make the telescopic distance of the detection component 5 longer, which is convenient for operators to use and easy to carry; S2: When the operator controls the telescopic assembly 2 to telescope and move through the driving assembly 4, the initial state of the bayonet sleeve rod 43 is engaged with the first bevel gear 48, and the operator drives the driving rod 41 to rotate by rotating the handle 42. The driving rod 41 rotates to rotate the bayonet sleeve rod 43, and the bayonet sleeve rod 43 drives the first bevel gear 48 to rotate the second bevel gear 49, and then the spiral rod 21 rotates through the second bevel gear 49, so that the telescopic assembly 2 can drive the detection assembly 5 to extend toward the direction of the gas pipeline for detection. When the detection assembly 5 extends to the side of the gas pipeline, the operator rotates The adjusting rod 45 rotates the adjusting disk 46, and the spiral strip 47 provided on the adjusting disk 46 contacts the annular groove 44 on the bayonet sleeve rod 43, thereby causing the bayonet sleeve rod 43 to slide on the driving rod 41, so that the bayonet sleeve rod 43 and the driving disk 33 are engaged. At this time, when the operator rotates the rotating handle 42, the driving rod 41 is driven to rotate the driving disk 33. The rotation of the driving disk 33 can facilitate the subsequent detection of the gas pipeline by the detection component 5, and the operator can switch the telescopic component 2 and the adjustment component 3 under the drive of the driving component 4, which is convenient for the operator to use; S3: When the driving rod 41 rotates to make the bayonet sleeve rod 43 drive the driving disc 33 to rotate, the driving disc 33 rotates and drives the connecting belt 39 to rotate the rotating disc 32 and the two transmission discs 38. When the rotating disc 32 rotates, the rotating rod 31 rotates. The rotating rod 31 rotates and drives the convex disc 51 to rotate. When the convex disc 51 rotates, when the protrusion of the convex disc 51 contacts the touch frame 54 at the bottom of the probe 52, the probe 52 is driven to deflect toward the gas pipeline on the telescopic frame 25, so that the probe 52 can contact the part of the gas pipeline to be detected, thereby realizing the gas detection operation in the gas pipeline; S4: When the telescopic frame 25 extends toward the direction of the gas pipeline, the rotating rod 31 drives the rotating disk 32 to move, and the two transmission disks 38 drive the limiting rod 35 to move in the limiting groove 34 on the outer shell frame 1, which will not affect the subsequent rotation of the driving disk 33. The connecting belt 39 drives the rotation of the rotating disk 32, so that the telescopic component 2 moves to each position of the gas pipeline. The probe 52 can be deflected toward the outer wall of the gas pipeline by the adjustment component 3 for detection, which is convenient for operators to use; S5: When the operator is inspecting the gas pipeline, due to the influence of the operating environment, when the probe 52 extends in the direction of the gas pipeline, the probe 52 is affected by foreign objects, which will affect the effect of gas detection. When the telescopic frame 25 extends in the direction of the gas pipeline, the cover frame 56 can prevent foreign objects from interfering with the probe 52. When it reaches the detection position of the gas pipeline, the rotation of the convex disc 51 will cause the resistance rod 59 to move driven by the pressure spring 511. At this time, the movement of the connecting frame 510 on the resistance rod 59 will cause the resistance block 512 to contact the spiral bevel groove 58 on the limiting cylinder 57, and then the hinged rod 55 will rotate under the restriction of the spiral bevel groove 58. The rotation of the hinged rod 55 drives the cover frame 56 to deflect, so that the probe 52 can extend in the direction of the gas pipeline, thereby realizing the gas detection operation.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A portable and retractable gas detector, characterized in that: The invention comprises an outer shell frame (1), a telescopic component (2) is slidably arranged inside the outer shell frame (1), an adjusting component (3) is rotatably arranged on the telescopic component (2), a driving component (4) is also rotatably arranged on the side wall of the outer shell frame (1), the driving component (4) is in transmission cooperation with the telescopic component (2), and a detection component (5) is also arranged on the top of the telescopic component (2), and the detection component (5) is in rotation cooperation with the telescopic component (2).

2. A portable and retractable gas detector according to claim 1, characterized in that: The telescopic assembly (2) comprises a spiral rod (21) rotatably arranged at the bottom of the outer shell frame (1); a movable frame (22) is slidably arranged on the inner wall of the outer shell frame (1); the movable frame (22) and the spiral rod (21) are spirally matched; two conveying discs (23) arranged opposite to each other are arranged on the two side walls of the movable frame (22); a conveying belt (24) is connected between two conveying discs (23) located on the outer wall of one side of the movable frame (22); a side of the conveying belt (24) close to the inner wall of the outer shell frame (1) is connected to the inner wall of the outer shell frame (1); and a side of the conveying belt (24) away from the inner wall of the outer shell frame (1) is connected to the telescopic frame (25).

3. A portable and retractable gas detector according to claim 2, characterized in that: The adjustment assembly (3) comprises a rotating rod (31) rotatably arranged on the top of the telescopic frame (25), a rotating disk (32) being fixedly connected to the rotating rod (31), a driving disk (33) being rotatably arranged on the inner wall of the outer shell frame (1), a limiting groove (34) being arranged opposite to each other on the side wall of the outer shell frame (1), a limiting rod (35) being arranged in each of the two limiting grooves (34), a limiting block (36) being rotatably arranged at one end of the limiting rod (35) facing the outer wall of the outer shell frame (1), the limiting block (36) being slidably engaged with the outer wall of the outer shell frame (1), a tension spring (37) being further arranged between the limiting block (36) and the bottom of the outer shell frame (1), a driving disk (38) being fixedly connected to one end of the limiting rod (35) away from the limiting block (36), and a connecting belt (39) being sleeved between the rotating disk (32) and the driving disk (33) and the two driving disks (38).

4. A portable and retractable gas detector according to claim 3, characterized in that: The driving assembly (4) comprises a driving rod (41) rotatably arranged on the outer wall of the outer shell frame (1), one end of the driving rod (41) is fixedly connected to a rotating handle (42), a bayonet sleeve rod (43) is clamped on the driving rod (41), and a ring groove (44) is formed on the bayonet sleeve rod (43), an adjusting rod (45) is rotatably arranged on the outer wall of the outer shell frame (1), an adjusting disk (46) is fixedly connected to the adjusting rod (45), and a spiral strip (47) is spirally arranged around the circumference of the adjusting disk (46), and the spiral strip (47) is located in a slide groove on the bayonet sleeve rod (43).

5. A portable and retractable gas detector according to claim 4, characterized in that: The drive assembly (4) further comprises a first bevel gear (48) and a second bevel gear (49) rotatably arranged on the inner wall of the housing frame (1); the center of the first bevel gear (48) is coaxial with the center of the drive disk (33) and the bayonet sleeve rod (43); the bayonet sleeve rod (43) is respectively engaged with the first bevel gear (48) and the drive disk (33); and the second bevel gear (49) is fixedly connected to the top of the spiral rod (21).

6. A portable and retractable gas detector according to claim 3, characterized in that: The detection assembly (5) comprises a convex plate (51) fixedly connected to the rotating rod (31), the opposite ends of the convex plate (51) are convex, the top of the telescopic frame (25) is hingedly provided with a probe (52), the hinged end of the probe (52) and the telescopic frame (25) is provided with a torsion spring (53), the bottom of the probe (52) is fixedly connected to a touch frame (54), and the convex part on the convex plate (51) abuts against the touch frame (54) on the probe (52).

7. A portable and retractable gas detector according to claim 6, characterized in that: The detection assembly (5) further comprises a hinged rod (55) rotatably arranged on the top of the telescopic frame (25), a cover frame (56) being fixedly connected to the hinged rod (55), the cover frame (56) being located on the top of the probe (52), both ends of the hinged rod (55) being fixedly connected to limit cylinders (57), both limit cylinders (57) being provided with spiral inclined grooves (58), and a resisting rod (59) being slidably arranged on the outer wall of the telescopic frame (25) which is arranged opposite to the convex plate (51). One end of the abutment rod (59) abuts against a raised portion of the convex disc (51); one end of the abutment rod (59) away from the convex disc (51) is fixedly connected to a connecting frame (510); a pressure spring (511) is sleeved on the abutment rod (59); two ends of the pressure spring (511) are respectively connected to the outer walls of the connecting frame (510) and the telescopic frame (25); and a stop block (512) is provided on the connecting frame (510) for contacting the spiral inclined groove (58) on the limiting cylinder (57).

8. A method for using a portable retractable gas detector, comprising the following steps: S1: When the operator controls the driving component (4) to extend the telescopic component (2), the rotation of the spiral rod (21) causes the movable frame (22) to slide on the inner wall of the outer shell frame (1). During the movement of the movable frame (22), one end of the conveying belt (24) is limited by the inner wall of the outer shell frame (1). Therefore, when the movable frame (22) moves, the conveying belt (24) moves to drive the two conveying plates (23) to rotate, and the telescopic frame (25) arranged on the other side of the conveying belt (24) away from the outer shell frame (1) extends toward the gas pipeline to be inspected, thereby enabling the detection component (5) arranged on the telescopic component (2) to contact the part of the gas pipeline to be inspected for inspection. In addition, the use of this telescopic method can lengthen the telescopic distance of the detection component (5), making it convenient for the operator to use and easy to carry. S2: When the operator controls the telescopic assembly (2) to telescopically move through the driving assembly (4), the bayonet sleeve rod (43) is initially engaged with the first bevel gear (48), and the operator rotates the handle (42) to drive the driving rod (41) to rotate. The driving rod (41) rotates to rotate the bayonet sleeve rod (43), and the bayonet sleeve rod (43) drives the first bevel gear (48) to rotate the second bevel gear (49). The second bevel gear (49) then rotates the spiral rod (21), so that the telescopic assembly (2) can drive the detection assembly (5) to extend toward the gas pipeline for detection. When the detection assembly (5) extends to the side of the gas pipeline, the operator rotates the adjustment lever (42) to rotate the first bevel gear (48). The rod (45) rotates the adjusting disk (46), and the spiral strip (47) provided on the adjusting disk (46) contacts the annular groove (44) on the bayonet sleeve rod (43), thereby causing the bayonet sleeve rod (43) to slide on the driving rod (41), so that the bayonet sleeve rod (43) and the driving disk (33) are engaged. At this time, when the operator rotates the rotating handle (42), the driving rod (41) is driven to rotate the driving disk (33). The rotation of the driving disk (33) can facilitate the subsequent driving of the detection component (5) to perform a detection operation on the gas pipeline. Under the drive of the driving component (4), the operator can conveniently switch the telescopic component (2) and the adjustment component (3), which is convenient for the operator to use; S3: When the driving rod (41) rotates to cause the bayonet sleeve rod (43) to drive the driving disc (33) to rotate, the driving disc (33) rotates and drives the connecting belt (39) to rotate the rotating disc (32) and the two transmission discs (38). When the rotating disc (32) rotates, the rotating rod (31) rotates. When the rotating rod (31) rotates, the convex disc (51) rotates. When the convex disc (51) rotates, when the protrusion of the convex disc (51) contacts the touch frame (54) at the bottom of the probe (52), the probe (52) is driven to deflect on the telescopic frame (25) toward the gas pipeline, so that the probe (52) can contact the part of the gas pipeline to be detected, thereby realizing the gas detection operation in the gas pipeline; S4: When the telescopic frame (25) is extended toward the direction of the gas pipeline, the rotating rod (31) drives the rotating disk (32) to move, and the two transmission disks (38) drive the limiting rod (35) to move in the limiting groove (34) on the outer shell frame (1), thereby not affecting the subsequent rotation of the driving disk (33). The connecting belt (39) drives the rotation of the rotating disk (32), so that the telescopic component (2) can be moved to various positions of the gas pipeline. The probe (52) can be deflected toward the outer wall of the gas pipeline by the adjusting component (3) for detection, which is convenient for operators to use; S5: When the operator detects the gas pipeline, due to the influence of the operating environment, when the probe (52) extends in the direction of the gas pipeline, the probe (52) is affected by foreign objects, which will affect the effect of gas detection. When the telescopic frame (25) extends in the direction of the gas pipeline, the cover frame (56) can prevent foreign objects from interfering with the probe (52). When the detection position of the gas pipeline is reached, the convex plate (51) rotates to move the abutment rod (59) driven by the pressure spring (511). At this time, the connecting frame (510) on the abutment rod (59) moves to make the abutment block (512) contact with the spiral bevel groove (58) on the limit cylinder (57), and then the hinged rod (55) rotates under the restriction of the spiral bevel groove (58). The rotation of the hinged rod (55) drives the cover frame (56) to deflect, so that the probe (52) can extend in the direction of the gas pipeline, thereby realizing the gas detection operation.

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