A Portable Retractable Gas Detector and Detection Method

Abstract

The present invention relates to the field of gas detectors. The present invention discloses a portable telescopic gas detector and a detection method. The problem to be solved by the present invention is that existing detectors usually extend the probe towards the outer wall of the gas pipeline for detection. During the extension process, the front end of the probe will be blocked by obstacles, which will affect the detection effect of the probe on gas, and the probe cannot contact the outer wall of the gas pipeline, affecting the detection accuracy of the probe. When the convex shape of the convex disk contacts the touch frame at the bottom of the probe, the present invention will drive the probe to deflect towards the gas pipeline on the telescopic frame, so that the probe can contact the part of the gas pipeline to be detected, and then realize the gas detection operation in the gas pipeline.

Description

Technical Field

[0001] The present invention relates to the field of gas detectors, and particularly to a portable telescopic gas detector and a detection method. Background Art

[0002] The modern gas industry has developed on the basis of the urban gas industry in the 19th century, and the process of gradually replacing urban gas with gas has been carried out. Subsequently, gas fields have been discovered in various countries one after another, and the discovery of gas fields is regarded as the beginning of the modern gas industry in each country. Gas has gradually replaced artificial gas in cities. Gas pipelines can be divided into three categories: gathering pipelines (from the wellhead to the purification plant), main gas transmission pipelines (from the outlet of the purification plant to the urban gate station or factory), and distribution pipelines (from the urban gate station to users). According to the data of relevant departments, it can be seen that within the urban area, the output, pipeline length, and gas-using population of artificial gas are decreasing year by year, and the pipeline length and gas-using population of liquefied petroleum gas are also decreasing year by year. However, the urban pipeline length, gas supply volume, and gas-using population of gas are increasing year by year. With the annual increase in urban gas pipelines, the daily inspection, maintenance, and operation of gas pipelines are extremely labor-intensive.

[0003] The existing patent (publication number: CN216207387U) discloses a portable telescopic gas detector, which includes a handle, a telescopic component, a power supply component, and a bendable flexible detection component. The telescopic component includes a plurality of continuously arranged telescopic parts. The aperture of the telescopic component becomes smaller and smaller in the arrangement direction of the telescopic parts. Among any two adjacent telescopic parts, the telescopic part with a smaller aperture can slide into the interior of the telescopic part with a larger aperture for storage. In this way, it can be ensured that the entire telescopic component can be completely stored inside the handle. When in use, the telescopic parts are unfolded in sequence, extending the overall length of the device. The bendable flexible detection component can be bent in any direction, so that it can reach areas that are difficult to touch in gas pipelines, facilitating the staff to check whether there is gas leakage in indoor gas pipelines and gas facilities in outdoor gas stations, and promptly discovering damage to gas pipelines and facilities, thereby reducing the risk of gas explosion. In the process of implementing the present invention, the inventor found that at least the following problems in the prior art have not been solved: The existing detectors usually extend the probe towards the outer wall of the gas pipeline for detection. During the extension process, the front end of the probe will be blocked by obstacles, which will affect the detection effect of the probe on gas, and the probe cannot contact the outer wall of the gas pipeline, affecting the detection accuracy of the probe. Summary of the Invention

[0004] The object of the present invention is to provide a portable and retractable gas detector and a detection method to solve the problems raised in the above-mentioned background technology. To achieve the above object, the present invention provides the following technical solution: A portable and retractable gas detector includes a housing frame, a retractable component is slidably arranged in the housing frame, an adjustment component is rotatably arranged on the retractable component, a driving component is also rotatably arranged on the side wall of the housing frame, the driving component is in transmission cooperation with the retractable component, a detection component is further arranged at the top of the retractable component, and the detection component is in rotational cooperation with the retractable component.

[0005] Preferably, the retractable component includes a screw rod rotatably arranged at the bottom inside the housing frame, a moving frame is slidably arranged on the inner wall of the housing frame, the moving frame is in screw fit with the screw rod, conveying discs are arranged on both side walls of the moving frame in pairs and opposite to each other, a conveying belt is connected between the two conveying discs on the outer wall of one side of the moving frame, one side of the conveying belt close to the inner wall of the housing frame is connected to the inner wall of the housing frame, and the side of the conveying belt away from the inner wall of the housing frame is connected to a retractable frame.

[0006] Preferably, the adjustment component includes a rotating rod rotatably arranged at the top of the retractable frame, a rotating disc is fixedly connected to the rotating rod, a driving disc is rotatably arranged on the inner wall of the housing frame, limiting grooves are oppositely arranged on the side wall of the housing frame, limiting rods are arranged in both limiting grooves, a limiting block is rotatably arranged at one end of the limiting rod facing the outer wall of the housing frame, the limiting block is in sliding fit with the outer wall of the housing frame, a tension spring is further arranged between the limiting block and the bottom of the housing frame, a transmission disc is fixedly connected to the end of the limiting rod away from the limiting block, and connecting belts are sleeved between the rotating disc, the driving disc and the two transmission discs.

[0007] Preferably, the driving component includes a driving rod rotatably arranged on the outer wall of the housing frame, a rotating handle is fixedly connected to one end of the driving rod, a pin sleeve rod is clamped on the driving rod, an annular groove is arranged on the pin sleeve rod, an adjusting rod is rotatably arranged on the outer wall of the housing frame, an adjusting disc is fixedly connected to the adjusting rod, spiral strips are arranged in a spiral shape around the circumference of the adjusting disc, and the spiral strips are located in the sliding grooves on the pin sleeve rod.

[0008] Preferably, the driving component further includes a first bevel gear and a second bevel gear rotatably arranged on the inner wall of the housing frame, the center of the first bevel gear, the center of the driving disc and the pin sleeve rod are on the same axis, and the pin sleeve rod is in clamping fit with the first bevel gear and the driving disc respectively, and the second bevel gear is fixedly connected to the top of the screw 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:

[0012] 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.

[0013] S2: When the operator controls the telescopic component to move telescopically through the driving component, the pin sleeve rod is initially engaged with the first bevel gear. The operator drives the driving rod to rotate by rotating the handle. The rotation of the driving rod causes the pin sleeve rod to rotate. The pin sleeve rod will drive the first bevel gear to rotate the second bevel gear, and then the screw rod is rotated through the second bevel gear so that the telescopic component can drive the detection component to extend towards the direction of the gas pipeline for detection. When the detection component extends to the side of the gas pipeline, the operator rotates the adjustment rod to rotate the adjustment disc. The spiral strip provided on the adjustment disc will then abut against the annular groove on the pin sleeve rod, and then the pin sleeve rod slides on the driving rod, so that the pin sleeve rod is engaged with the driving disc. At this time, when the operator rotates the rotary handle, it will drive the driving rod to rotate the driving disc. The rotation of the driving disc can facilitate the subsequent driving of the detection component to detect the gas pipeline, and the driving component can facilitate the operator to switch between the telescopic component and the adjustment component, which is convenient for the operator to use;

[0014] S3: When the driving rod rotates to drive the pin sleeve rod to drive the driving disc to rotate, the rotation of the driving disc will drive the connecting belt to rotate the rotating disc and the two transmission discs. When the rotating disc rotates, the rotating rod will rotate. When the rotating rod rotates, it will drive the convex disc to rotate. When the protrusion of the convex disc contacts the touch frame at the bottom of the probe, it will drive the probe to deflect towards the direction of the gas pipeline on the telescopic frame, and then the probe can contact the part of the gas pipeline to be detected, thereby realizing the gas detection operation in the gas pipeline;

[0015] S4: When the telescopic frame extends towards the direction of the gas pipeline, the rotating rod drives the rotating disc to move, and the two transmission discs will drive the limiting rod to move in the limiting groove on the outer shell frame, so as not to affect the subsequent rotation of the driving disc to drive the rotating disc through the connecting belt. Thus, when the telescopic component moves to various positions of the gas pipeline, the probe can be deflected towards the outer wall of the gas pipeline through the adjustment component for detection, which is convenient for the operator to use;

[0016] S5: When the operator detects the gas pipeline, due to the influence of the operating environment, when the probe extends towards the direction of the gas pipeline, the probe is affected by foreign objects, which will affect the gas detection effect. Therefore, when the telescopic frame extends towards the direction of the gas pipeline, it can avoid foreign objects interfering with the probe under the shielding of the covering frame. When reaching the detection part of the gas pipeline, the rotation of the convex disc will cause the abutting rod to move driven by the compression spring. At this time, the connecting frame on the abutting rod moves, and the abutting block will contact the spiral inclined groove on the limiting cylinder. Then, under the limitation of the spiral inclined groove, the hinged rod rotates, and the rotation of the hinged rod drives the covering frame to deflect, so that the probe can extend towards the direction of the gas pipeline, thereby realizing the gas detection operation.

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

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a sectional view of the three-dimensional structure of the present invention;

[0025] Figure 3 The local three-dimensional structure of the present invention is cut away Figure 1 ;

[0026] Figure 4 The local three-dimensional structure of the present invention is cut away Figure 2 ;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the driving component of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the detection component of the present invention;

[0029] Figure 7 It is a schematic diagram of the local three-dimensional structure of the detection component of the present invention.

[0030] 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 implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 to 7 , the present invention provides a technical solution: a portable and retractable gas detector, including a housing frame 1, a telescopic component 2 is slidably arranged in the housing frame 1, an adjusting component 3 is rotatably arranged on the telescopic component 2, and a driving component 4 is also rotatably arranged on the side wall of the housing frame 1. The driving component 4 is in transmission cooperation with the telescopic component 2, and a detection component 5 is further arranged at the top of the telescopic component 2. The detection component 5 is in rotational cooperation with the telescopic component 2.

[0033] In this embodiment, as Figure 1 , Figure 2 and Figure 3 shown, the telescopic component 2 includes a screw rod 21 rotatably arranged at the bottom inside the housing frame 1, a moving frame 22 is slidably arranged on the inner wall of the housing frame 1, the moving frame 22 is in screw fit with the screw rod 21, two pairs of conveying discs 23 are arranged on both side walls of the moving frame 22 and are arranged opposite to each other, a conveying belt 24 is connected between the two conveying discs 23 on the outer wall of one side of the moving frame 22, one side of the conveying belt 24 close to the inner wall of the housing frame 1 is connected to the inner wall of the housing frame 1, and the other side of the conveying belt 24 far from the inner wall of the housing frame 1 is connected to a telescopic frame 25;

[0034] When the operator controls the driving component 4 to extend the telescopic component 2, under the rotation of the screw rod 21, the moving frame 22 will slide on the inner wall of the housing 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 housing frame 1. Therefore, when the moving frame 22 moves, the conveying belt 24 will move to drive the two conveying discs 23 to rotate, and the telescopic frame 25 arranged on the other side of the conveying belt 24 far from the housing frame 1 will extend towards the gas pipeline to be detected, so that the detection component 5 arranged on the telescopic component 2 can contact the part to be detected of the gas pipeline for detection. And adopting this telescopic method can make the telescopic distance of the detection component 5 longer, which is convenient for the operator to use and carry.

[0035] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the adjusting assembly 3 includes a rotating rod 31 rotatably arranged at 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. Limiting grooves 34 are oppositely arranged on the side wall of the outer shell frame 1. Limiting rods 35 are arranged in both of the two limiting grooves 34. One end of the limiting rod 35 facing the outer wall of the outer shell frame 1 is rotatably provided with a limiting block 36. 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. The end of the limiting rod 35 away from the limiting block 36 is fixedly connected with a transmission disk 38. A connecting belt 39 is sleeved between the rotating disk 32, the driving disk 33 and the two transmission disks 38;

[0036] The driving assembly 4 includes a driving rod 41 rotatably arranged on the outer wall of the outer shell frame 1. A rotating handle 42 is fixedly connected to one end of the driving rod 41. A pin sleeve rod 43 is clamped on the driving rod 41. An annular groove 44 is formed on the pin 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. A spiral strip 47 arranged in a spiral shape is arranged around the circumference of the adjusting disk 46. The spiral strip 47 is located in the sliding groove on the pin sleeve rod 43;

[0037] The driving assembly 4 further includes a first bevel gear 48 and a second bevel gear 49 rotatably arranged on the inner wall of the outer shell frame 1. The center of the first bevel gear 48, the center of the driving disk 33 and the pin sleeve rod 43 are on the same axis. The pin sleeve rod 43 is respectively clamped and matched with the first bevel gear 48 and the driving disk 33. The second bevel gear 49 is fixedly connected to the top of the screw rod 21;

[0038] When the operator controls the telescopic movement of the telescopic component 2 through the driving component 4, the pin sleeve rod 43 is initially engaged with the first bevel gear 48. The operator drives the driving rod 41 to rotate by rotating the handle 42. The rotation of the driving rod 41 causes the pin sleeve rod 43 to rotate. The pin sleeve rod 43 drives the first bevel gear 48 to rotate the second bevel gear 49. Then, through the second bevel gear 49, the screw rod 21 rotates, enabling the telescopic component 2 to drive the detection component 5 to extend towards the gas pipeline for detection. When the detection component 5 extends to the side of the gas pipeline, the operator rotates the adjustment rod 45 to rotate the adjustment disk 46. The spiral strip 47 provided on the adjustment disk 46 abuts against the annular groove 44 on the pin sleeve rod 43. As a result, the pin sleeve rod 43 slides on the driving rod 41, and the pin sleeve rod 43 is engaged with the driving disk 33. At this time, when the operator rotates the rotary handle 42, it will drive the driving rod 41 to rotate the driving disk 33. The rotation of the driving disk 33 can facilitate subsequent driving of the detection component 5 to detect the gas pipeline. Driven by the driving component 4, it is convenient for the operator to switch between the telescopic component 2 and the adjustment component 3, facilitating the operator's use.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 6 and Figure 7 shown, the detection component 5 includes a convex disk 51 fixedly connected to the rotating rod 31. The opposite ends of the convex disk 51 are convex. The top of the telescopic frame 25 is hinged with a probe 52. A torsion spring 53 is provided at the hinged end of the probe 52 and the telescopic frame 25. The bottom of the probe 52 is fixedly connected with a touch frame 54. The convex part on the convex disk 51 abuts against the touch frame 54 on the probe 52;

[0040] When the driving rod 41 rotates to drive the pin sleeve rod 43 to drive the driving disk 33 to rotate, the rotation of the driving disk 33 drives the connecting belt 39 to rotate the rotating disk 32 and the two transmission disks 38. When the rotating disk 32 rotates, it causes the rotating rod 31 to rotate. The rotation of the rotating rod 31 drives the convex disk 51 to rotate. When the convex part of the convex disk 51 contacts the touch frame 54 at the bottom of the probe 52 during the rotation of the convex disk 51, it drives the probe 52 to deflect towards the gas pipeline on the telescopic frame 25. As a result, the probe 52 can contact the part of the gas pipeline to be detected, thereby realizing the gas detection operation inside the gas pipeline;

[0041] 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.

[0042] 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;

[0043] 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.

[0044] The use method and advantages of the present invention: The use method of the portable retractable gas detector, the working process is as follows:

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ,Figure 6 , Figure 7 as shown in

[0046] S1: When the operator controls the driving component 4 to extend the telescopic component 2, under the rotation of the screw rod 21, the moving frame 22 will 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 to drive the two conveyor discs 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 towards the gas pipeline to be detected. Thus, the detection component 5 arranged on the telescopic component 2 can contact the part of the gas pipeline to be detected for detection. And adopting this telescopic method can make the telescopic distance of the detection component 5 longer, which is convenient for the operator to use and easy to carry;

[0047] S2: When the operator controls the telescopic movement of the telescopic component 2 through the driving component 4, the pin sleeve rod 43 is initially engaged with the first bevel gear 48. The operator drives the driving rod 41 to rotate by rotating the handle 42. The rotation of the driving rod 41 causes the pin sleeve rod 43 to rotate. The pin sleeve rod 43 will drive the first bevel gear 48 to rotate the second bevel gear 49. Then, through the second bevel gear 49, the screw rod 21 rotates so that the telescopic component 2 can drive the detection component 5 to extend towards the gas pipeline for detection. When the detection component 5 extends to the side of the gas pipeline, the operator rotates the adjustment rod 45 to rotate the adjustment disc 46. The spiral strip 47 arranged on the adjustment disc 46 will abut against the annular groove 44 on the pin sleeve rod 43. Thus, the pin sleeve rod 43 slides on the driving rod 41, and the pin sleeve rod 43 is engaged with the driving disc 33. At this time, when the operator rotates the rotating handle 42, it will drive the driving rod 41 to rotate the driving disc 33. The rotation of the driving disc 33 can facilitate the subsequent detection operation of the gas pipeline by driving the detection component 5. And driven by the driving component 4, it is convenient for the operator to switch between the telescopic component 2 and the adjustment component 3, which is convenient for the operator to use;

[0048] S3: When the driving rod 41 rotates to drive the pin sleeve rod 43 to drive the driving disc 33 to rotate, the driving disc 33 rotates to drive the connecting belt 39 to rotate the rotating disc 32 and the two transmission discs 38. When the rotating disc 32 rotates, it will cause the rotating rod 31 to rotate. The rotation of the rotating rod 31 will drive the cam disc 51 to rotate. When the convex part of the cam disc 51 contacts the touch frame 54 at the bottom of the probe 52 during the rotation of the cam disc 51, it will drive the probe 52 to deflect towards the gas pipeline on the telescopic frame 25. Thus, the probe 52 can contact the part of the gas pipeline to be detected, and then the gas detection operation in the gas pipeline is realized;

[0049] S4: When the telescopic frame 25 extends towards 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 within the limiting groove 34 on the outer shell frame 1. Furthermore, it will not affect the subsequent rotation of the driving disk 33 to drive the rotation of the rotating disk 32 through the connecting belt 39, so that the telescopic assembly 2 can move to various positions of the gas pipeline, and the probe 52 can be deflected towards the outer wall of the gas pipeline through the adjusting assembly 3 for detection, which is convenient for the operator to use;

[0050] S5: When the operator detects the gas pipeline, due to the influence of the operating environment, when the probe 52 extends towards the gas pipeline, the probe 52 will be affected by external objects, which will affect the gas detection effect. Therefore, when the telescopic frame 25 extends towards the gas pipeline, the cover frame 56 can prevent external objects from interfering with the probe 52. When reaching the detection part of the gas pipeline, the convex disk 51 rotates, which will drive the contact rod 59 to move under the drive of the compression spring 511. At this time, the connecting frame 510 on the contact rod 59 moves, which will make the abutting block 512 contact with the spiral inclined groove 58 on the limiting cylinder 57. Furthermore, under the limitation of the spiral inclined groove 58, the hinge rod 55 rotates, and the rotation of the hinge rod 55 drives the cover frame 56 to deflect, so that the probe 52 can extend towards the gas pipeline, thus realizing the gas detection operation.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the 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 will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A portable and retractable gas detector, characterized in that: The invention comprises a housing frame (1), a telescopic component (2) is slidably arranged in the housing frame (1), an adjusting component (3) is rotatably arranged on the telescopic component (2), a driving component (4) is rotatably arranged on the side wall of the housing frame (1), the driving component (4) is in transmission cooperation with the telescopic component (2), 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); 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; 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 the 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 telescopic frame (25) is connected to the side of the conveying belt (24) away from the inner wall of the outer shell frame (1); 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 matched 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); 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).

2. A portable and retractable gas detector according to claim 1, 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).

3. A portable and retractable gas detector according to claim 1, 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).

4. A portable and retractable gas detector according to claim 3, 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).

5. 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 the probe (52) from being interfered with by foreign objects. When the probe (52) reaches the detection position of the gas pipeline, 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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