A gas pipe roundness detection device that is easy to position

Abstract

The invention discloses a gas pipe roundness detection device which is easy to position, and relates to the technical field of pipe roundness detection, comprising a detection mechanism and an alarm spring assembly installed inside the detection mechanism, wherein a positioning mechanism is arranged on the outer side of the detection mechanism, and a lifting motor is arranged on one side of the bottom of the positioning mechanism, wherein the detection mechanism comprises a rotating bracket, and limiting side plates are symmetrically arranged on both sides of the rotating bracket, and a meshing gear ring is fixedly installed on the inner side of the limiting side plate, and a rotating ring is rotatably connected to the inner ring of the limiting side plate on one side, and a plurality of fixed brackets are fixedly installed on the outer side of the rotating ring, and a limiting clamping arm is driven by an adjusting motor to perform preliminary limiting on the gas pipe, and the limiting clamping arm is driven to rotate by an electric telescopic rod, so as to clamp and limit gas pipes of different diameters, and an angle display disk is used to observe the rotation angle of the limiting clamping arm, and at the same time, the telescopic amount of the adjusting ruler is observed to judge whether the roundness of the gas pipe meets the requirements.

Description

Technical Field

[0001] The invention relates to the technical field of pipe roundness detection, in particular to a gas pipe roundness detection device which is easy to position. Background Art

[0002] In order to ensure safe production, units and departments at all levels in coal mines attach great importance to relevant research on gas. At present, the most commonly used measure in coal mine production is to use special pipelines to extract gas to ensure the safety of mine operations. In production, it is necessary to carry out roundness testing on gas extraction pipes to ensure that the produced gas extraction pipes are qualified to prevent gas explosions. At the same time, it can facilitate the splicing of gas pipes to avoid leakage caused by splicing seams.

[0003] Announcement No. CN 114777621 B discloses a roundness detection device for gas extraction pipe production, including a base, a clamping assembly is arranged on the upper surface of the base, the clamping assembly consists of two, an adjustment assembly is arranged on one side of the base, a measuring assembly is arranged on the upper surface of the adjustment assembly, the measuring assembly includes a cylinder, a rack is arranged at one end of the cylinder, a gear is arranged on the upper surface of the rack, a second limit block is arranged at the bottom end of the rack, and a test ring is fixedly installed on one side of the gear. The roundness detection of the inner tube and the outer tube of the same round tube can be performed, saving mechanical investment, and the round tube is made more stable by the clamping assembly to prevent shaking during measurement, ensure the accuracy of the measured value, and prevent gas explosion caused by errors in the roundness data of the gas extraction pipe. However, the patent still has the following problems in actual use:

[0004] Although the roundness detection device used for gas extraction pipe production can detect the roundness of the gas pipe, the position of the measuring component is fixed, and it is not possible to perform a full-scale detection of the surface of the gas pipe. At the same time, in the prior art, the roundness of the gas pipe is detected by rotating the gas pipe or rotating the detection device. However, during the rotation and translation process, the movement trajectory of the detection device is spiral, and some detection positions are missed, resulting in inaccurate detection data.

[0005] Therefore, a gas pipe roundness detection device which is easy to locate is proposed to solve the above-mentioned problems. Summary of the invention

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a gas pipe roundness detection device that is easy to locate, comprising a detection mechanism, and an alarm spring assembly installed inside the detection mechanism;

[0007] A positioning mechanism is arranged on the outer side of the detection mechanism, and a lifting motor is arranged on one side of the bottom of the positioning mechanism;

[0008] Also includes:

[0009] The detection mechanism comprises a rotating bracket, and the two sides of the rotating bracket are symmetrically installed with limit side plates, the inner side of the limit side plate is fixedly installed with a meshing gear ring, and the inner ring of the limit side plate on one side is rotatably connected with a rotating ring;

[0010] Among them, a plurality of fixed brackets are fixedly installed on the outer side of the rotating ring, an adjusting motor is fixedly installed on one side of the inner side of the fixed bracket, and the output end of the adjusting motor is fixedly connected to the first sprocket transmission assembly;

[0011] Wherein, one side of the first sprocket transmission assembly is symmetrically connected with an adjusting threaded rod, the middle part of the adjusting threaded rod is threadedly connected with an adjusting threaded sleeve, and an adjusting threaded bracket is fixedly connected between the two adjusting threaded sleeves;

[0012] The bottom of the adjusting threaded bracket is fixedly connected to the limit bracket, the bottom of the limit bracket is provided with an electric telescopic rod, the bottom sides of the electric telescopic rod are rotatably connected to the limit clamping arms, the limit clamping arms are provided with an angle display plate near the outer side of the electric telescopic rod, and the inside of the limit clamping arms is rotatably connected to the limit roller.

[0013] Preferably, first rotating supports are symmetrically arranged on both sides of the bottom of the limiting bracket, the bottom of the first rotating support is rotatably connected to a supporting sleeve, the interior of the supporting sleeve is slidably connected to an adjusting ruler, one side of the supporting sleeve is threadedly connected to a first locking knob, and the end of the adjusting ruler is rotatably connected to a second rotating support.

[0014] Preferably, a detection bracket is fixedly installed on the front side of the fixed bracket, second locking knobs are symmetrically threaded on both sides of the detection bracket, a detection ruler is slidably connected inside the detection bracket, the alarm spring assembly is fixedly installed on the end of the detection ruler, and a detection roller is fixedly installed on one side of the alarm spring assembly.

[0015] Preferably, a first rotating motor is fixedly installed inside the fixed bracket, and a rotating gear is fixedly connected to the output end of the first rotating motor. The rotating gear is meshingly connected with the meshing gear ring. Three fixed brackets are arranged at equal angles of 120 degrees around the circumference.

[0016] Preferably, the positioning mechanism includes a mobile base, lifting brackets are symmetrically installed on both sides of the top of the mobile base, the tops of the two lifting brackets are fixedly connected to translation brackets, the lifting motor is fixedly installed on one side of the interior of the mobile base, and the output end of the lifting motor is fixedly connected to a second sprocket transmission assembly.

[0017] Preferably, the top of the second sprocket transmission assembly is symmetrically connected with a lifting threaded rod, the middle part of the lifting threaded rod is threadedly connected with a lifting threaded sleeve, a second rotating motor is fixedly installed on one side of the top of the lifting threaded sleeve, the output end of the second rotating motor is fixedly connected with a third sprocket transmission assembly, and the bottom of the third sprocket transmission assembly is fixedly connected with a first clamping bracket.

[0018] Preferably, one side of the middle part of the first clamping bracket is rotatably connected to the second clamping bracket, one side of the first clamping bracket and the second clamping bracket are rotatably connected to an adjusting knob, one side of the adjusting knob is fixedly connected to a bidirectional threaded rod, the middle part of the bidirectional threaded rod is threadedly connected to a clamping thread sleeve, and the outer side of the clamping thread sleeve is slidably connected to a clamping sleeve.

[0019] Preferably, a third locking knob is threadedly connected to an inner side of the clamping sleeve, a translation motor is fixedly installed on one side of the translation bracket, a translation threaded rod is fixedly connected to the output end of the translation motor, a translation threaded bracket is threadedly connected to the middle part of the translation threaded rod, and the translation threaded bracket is fixedly installed on the top of the rotating bracket.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the roundness detection device for gas pipes that is easy to position can not only use the adjusting motor to drive the limit clamping arm to perform preliminary position limiting on the gas pipe by setting the detection mechanism, but also drive the limit clamping arm to rotate by the electric telescopic rod, so as to clamp and limit the gas pipes of different diameters, use the angle display plate to observe the rotation angle of the limit clamping arm, and at the same time, observe the telescopic amount of the adjusting ruler to judge whether the roundness of the gas pipe meets the requirements, and by setting the positioning mechanism, not only can the adjusting knob be used to clamp and fix the inner wall or outer wall of the gas pipe of different diameters, but also the lifting motor can align the center position of the gas pipe with the center position of the rotating bracket, the second rotating motor can realize the rotation of the gas pipe, and the translation motor can drive the rotating bracket to move horizontally, and the specific contents are as follows:

[0021] 1. By setting up the detection mechanism, the adjustment motor can be used to drive the first sprocket transmission assembly and the adjustment threaded rod to rotate, so that the adjustment threaded sleeve drives the adjustment threaded bracket and the limit bracket to move, and the limit clamping arm is used to initially limit the gas pipe. The electric telescopic rod drives the limit clamping arm to rotate, so as to clamp and limit the gas pipes of different diameters. The angle display plate is used to observe the rotation angle of the limit clamping arm, and the telescopic amount of the adjustment ruler is observed to determine whether the roundness of the gas pipe meets the requirements. At the same time, the second locking knob is used to adjust the distance between the detection ruler and the outer surface of the gas pipe. The detection roller and the alarm spring assembly are used to detect the distance between the detection ruler and the outer surface of the gas pipe. The components are used to detect the roundness of the gas pipe. The alarm spring assembly, the angle display plate and the adjusting ruler are all provided with induction alarm devices. When the roundness of the gas pipe does not meet the requirements, the expansion and contraction of the adjusting ruler and the alarm spring assembly will exceed the limit value, thereby sounding an alarm. The first rotating motor drives the rotating gear to rotate, and the meshing action between the rotating gear and the meshing gear ring is utilized to realize the rotation of the rotating ring and the fixed bracket, so as to facilitate the roundness detection of the gas pipe. The detection ruler is assisted by the limit clamping arm to perform the detection, so as to avoid the omission of the detection in the process of mobile detection, thereby causing the phenomenon of inaccurate detection data.

[0022] 2. By setting the positioning mechanism, not only can the adjusting knob be used to drive the bidirectional threaded rod to rotate, so that the clamping threaded sleeve drives the clamping sleeve to move, so as to clamp and fix the inner wall or outer wall of the gas pipe of different diameters, but at the same time, the lifting motor drives the second sprocket transmission assembly and the lifting threaded rod to rotate, so that the lifting threaded sleeve drives the first clamping bracket and the second clamping bracket to move up and down, and aligns the center position of the gas pipe with the center position of the rotating bracket, so as to facilitate the roundness detection. The second rotating motor drives the third sprocket transmission assembly and the first clamping bracket to rotate, so as to realize the rotation of the gas pipe, so as to facilitate the roundness detection of the inner diameter or outer diameter of the gas pipe. The translation motor drives the translation threaded rod to rotate, so that the translation threaded bracket drives the rotating bracket to move horizontally, so as to facilitate the roundness detection of different positions of the gas pipe and improve the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the detection mechanism in the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the meshing gear ring and the rotating ring in the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing bracket and the detection bracket in the present invention;

[0027] Figure 5It is a schematic diagram of the three-dimensional structure of the limiting bracket in the present invention;

[0028] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of the middle A area;

[0029] Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the positioning mechanism in the present invention;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the lifting threaded rod and the lifting threaded sleeve in the present invention;

[0032] Fig.10 A schematic diagram of the three-dimensional structure of the first clamping bracket and the second clamping bracket in the present invention;

[0033] Fig.11 It is a schematic diagram of the three-dimensional structure of the translation bracket in the present invention.

[0034] In the figure: 1, detection mechanism; 101, rotating bracket; 102, limiting side plate; 103, meshing gear ring; 104, rotating ring; 105, fixed bracket; 106, adjustment motor; 107, first sprocket transmission assembly; 108, adjustment threaded rod; 109, adjustment threaded sleeve; 110, adjustment threaded bracket; 111, limiting bracket; 112, electric telescopic rod; 113, limiting clamping arm; 114, angle display plate; 115, limiting roller; 116, first rotating support; 117, supporting sleeve; 118, adjusting ruler; 119, first locking knob; 120, second rotating support; 121, detection bracket; 122, second locking knob; 123, detection ruler; 124, Alarm spring assembly; 125, detection roller; 126, first rotating motor; 127, rotating gear; 2, positioning mechanism; 201, moving base; 202, lifting bracket; 203, translation bracket; 204, lifting motor; 205, second sprocket transmission assembly; 206, lifting threaded rod; 207, lifting threaded sleeve; 208, second rotating motor; 209, third sprocket transmission assembly; 210, first clamping bracket; 211, second clamping bracket; 212, adjusting knob; 213, two-way threaded rod; 214, clamping threaded sleeve; 215, clamping sleeve; 216, third locking knob; 217, translation motor; 218, translation threaded rod; 219, translation threaded bracket. DETAILED DESCRIPTION

[0035] 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 implementation regulations described 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 11 The present invention provides a technical solution: a gas pipe roundness detection device that is easy to position, comprising a detection mechanism 1, and an alarm spring assembly 124 installed inside the detection mechanism 1, a positioning mechanism 2 is arranged on the outside of the detection mechanism 1, and a lifting motor 204 is arranged on one side of the bottom of the positioning mechanism 2, the detection mechanism 1 comprises a rotating bracket 101, and the two sides of the rotating bracket 101 are symmetrically installed with a limited side plate 102, the inner side of the limited side plate 102 is fixedly installed with a meshing gear ring 103, and the inner ring of one side of the limited side plate 102 is rotatably connected with a rotating ring 104, wherein the outer side of the rotating ring 104 is fixedly installed with a A plurality of fixed brackets 105 are provided, one side of the fixed bracket 105 is fixedly installed with an adjusting motor 106, the output end of the adjusting motor 106 is fixedly connected with a first sprocket transmission assembly 107, wherein one side of the first sprocket transmission assembly 107 is symmetrically connected with an adjusting threaded rod 108, the middle part of the adjusting threaded rod 108 is threadedly connected with an adjusting threaded sleeve 109, an adjusting threaded bracket 110 is fixedly connected between the two adjusting threaded sleeves 109, the bottom of the adjusting threaded bracket 110 is fixedly connected with a limiting bracket 111, the bottom of the limiting bracket 111 is provided with an electric telescopic rod 112, and the electric telescopic rod 112 is fixedly connected with the adjusting threaded bracket 110. 2 are rotatably connected to the limit clamping arms 113 on both sides of the bottom, the limit clamping arms 113 are provided with angle display plates 114 near the outer sides of the electric telescopic rod 112, the limit clamping arms 113 are internally rotatably connected to the limit rollers 115, the bottom of the limit bracket 111 is symmetrically provided with first rotating supports 116, the bottom of the first rotating support 116 is rotatably connected to a supporting sleeve 117, the support sleeve 117 is internally slidably connected to an adjusting ruler 118, one side of the support sleeve 117 is threadedly connected to a first locking knob 119, and the end of the adjusting ruler 118 is rotatably connected to a second rotating support 120, By setting up the detection mechanism 1, not only can the adjusting motor 106 be used to drive the first sprocket transmission assembly 107 and the adjusting threaded rod 108 to rotate, but also the adjusting threaded sleeve 109 can drive the adjusting threaded bracket 110 and the limiting bracket 111 to move, and the gas pipe can be initially limited by the limiting clamping arm 113, and the limiting clamping arm 113 can be driven to rotate by the electric telescopic rod 112, so as to clamp and limit the gas pipes of different diameters, and the angle display disk 114 can be used to observe the rotation angle of the limiting clamping arm 113, and at the same time, by observing the telescopic amount of the adjusting ruler 118, it can be judged whether the roundness of the gas pipe meets the requirements.

[0037] A detection bracket 121 is fixedly installed on the front of the fixed bracket 105, and the two sides of the detection bracket 121 are symmetrically threaded with a second locking knob 122. The detection bracket 121 is internally slidably connected with a detection ruler 123, and an alarm spring assembly 124 is fixedly installed on the end of the detection ruler 123. A detection roller 125 is fixedly installed on one side of the alarm spring assembly 124. A first rotating motor 126 is fixedly installed inside the fixed bracket 105, and a rotating gear 127 is fixedly connected to the output end of the first rotating motor 126. The rotating gear 127 is meshed with the meshing gear ring 103. Three fixed brackets 105 are arranged at equal angles of 120 degrees around the circumference. The distance between the detection ruler 123 and the outer surface of the gas pipe is adjusted by the second locking knob 122, and the detection roller 125 is used to adjust the distance between the detection ruler 123 and the outer surface of the gas pipe. 125 and the alarm spring assembly 124 detect the roundness of the gas pipe. The alarm spring assembly 124, the angle display plate 114 and the adjusting ruler 118 are all provided with induction alarm devices. When the roundness of the gas pipe does not meet the requirements, the expansion and contraction of the adjusting ruler 118 and the alarm spring assembly 124 will exceed the limit value, thereby sounding an alarm. The first rotating motor 126 drives the rotating gear 127 to rotate, and the meshing action between the rotating gear 127 and the meshing gear ring 103 is utilized to realize the rotation of the rotating ring 104 and the fixed bracket 105, so as to facilitate the roundness detection of the gas pipe. The detection ruler 123 is assisted by the limit clamping arm 113 to perform detection, so as to avoid omissions in the detection during the mobile detection, thereby causing inaccurate detection data.

[0038] The positioning mechanism 2 includes a mobile base 201, and lifting brackets 202 are symmetrically installed on both sides of the top of the mobile base 201. The tops of the two lifting brackets 202 are fixedly connected with translation brackets 203. A lifting motor 204 is fixedly installed on one side of the inside of the mobile base 201. The output end of the lifting motor 204 is fixedly connected with a second sprocket transmission assembly 205. The top of the second sprocket transmission assembly 205 is symmetrically connected with a lifting threaded rod 206. The middle part of the lifting threaded rod 206 is threadedly connected with a lifting threaded sleeve 207. A second rotating motor 208 is fixedly installed on one side of the top of the lifting threaded sleeve 207. The output end of the second rotating motor 208 is fixedly connected. A third sprocket transmission assembly 209 is connected, the bottom of the third sprocket transmission assembly 209 is fixedly connected to a first clamping bracket 210, a middle side of the first clamping bracket 210 is rotatably connected to a second clamping bracket 211, one side of the first clamping bracket 210 and the second clamping bracket 211 are rotatably connected to an adjusting knob 212, one side of the adjusting knob 212 is fixedly connected to a bidirectional threaded rod 213, the middle of the bidirectional threaded rod 213 is threadedly connected to a clamping thread sleeve 214, the outer side of the clamping thread sleeve 214 is slidably connected to a clamping sleeve 215, the inner side of the clamping sleeve 215 is threadedly connected to a third locking knob 216, and the translation bracket A translation motor 217 is fixedly installed on one side of 203, and a translation threaded rod 218 is fixedly connected to the output end of the translation motor 217, and a translation threaded bracket 219 is threadedly connected to the middle part of the translation threaded rod 218, and the translation threaded bracket 219 is fixedly installed on the top of the rotating bracket 101. By setting the positioning mechanism 2, not only can the adjusting knob 212 be used to drive the bidirectional threaded rod 213 to rotate, so that the clamping threaded sleeve 214 drives the clamping sleeve 215 to move, so as to clamp and fix the inner wall or outer wall of the gas pipe with different diameters, but also the lifting motor 204 drives the second sprocket transmission assembly 205 and the lifting threaded rod 206 to rotate, so that the lifting The threaded sleeve 207 drives the first clamping bracket 210 and the second clamping bracket 211 to move up and down, aligning the center position of the gas pipe with the center position of the rotating bracket 101, thereby facilitating the detection of roundness. The second rotating motor 208 drives the third sprocket transmission assembly 209 and the first clamping bracket 210 to rotate, so as to realize the rotation of the gas pipe, thereby facilitating the detection of the roundness of the inner diameter or outer diameter of the gas pipe. The translation motor 217 drives the translation threaded rod 218 to rotate, so that the translation threaded bracket 219 drives the rotating bracket 101 to move horizontally, thereby facilitating the roundness detection of different positions of the gas pipe and improving the detection effect.

[0039] Working principle: Before using this easy-to-position gas pipe roundness detection equipment, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Fig.11As shown, firstly, the gas pipe is placed on the mobile base 201, and the bidirectional threaded rod 213 is driven to rotate by rotating the adjusting knob 212, so that the clamping threaded sleeve 214 drives the clamping sleeve 215 to move, so as to clamp and fix the inner wall or outer wall of the gas pipe with different diameters, and at the same time, the lifting motor 204 drives the second sprocket transmission assembly 205 and the lifting threaded rod 206 to rotate, so that the lifting threaded sleeve 207 drives the first clamping bracket 210 and the second clamping bracket 211 to move up and down, so that the center position of the gas pipe is aligned with the center position of the rotating bracket 101, so as to facilitate the roundness detection, and at the same time When the gas pipe is inserted into the rotating bracket 101, the adjusting motor 106 is started to drive the first sprocket transmission assembly 107 and the adjusting threaded rod 108 to rotate, so that the adjusting threaded sleeve 109 drives the adjusting threaded bracket 110 and the limiting bracket 111 to move, and the gas pipe is initially limited by the limiting clamping arm 113, and the electric telescopic rod 112 is started to drive the limiting clamping arm 113 to rotate, so as to clamp and limit the gas pipes of different diameters, and the first rotating motor 126 is started to drive the rotating gear 127 to rotate, and the meshing action between the rotating gear 127 and the meshing gear ring 103 is utilized to prevent the gas pipe from being damaged. The rotation of the rotating ring 104 and the fixed bracket 105 is realized. When the roundness of the outer wall of the gas pipe changes, the limit clamping arm 113 is driven to rotate. The rotation angle of the limit clamping arm 113 is observed by the angle display plate 114. At the same time, by observing the expansion and contraction amount of the adjustment ruler 118, it is judged whether the roundness of the gas pipe meets the requirements. At the same time, the distance between the detection ruler 123 and the outer surface of the gas pipe is adjusted by the second locking knob 122. The roundness of the gas pipe is detected by the detection roller 125 and the alarm spring assembly 124. The inner surface of the alarm spring assembly 124, the angle display plate 114 and the adjustment ruler 118 are Each part is provided with an induction alarm device. When the roundness of the gas pipe does not meet the requirements, the expansion and contraction amount of the adjusting ruler 118 and the alarm spring assembly 124 will exceed the limit value, thereby sounding an alarm. The detection ruler 123 is assisted by the limit clamping arm 113 to perform detection, so as to avoid omissions in the detection during the mobile detection, thereby causing inaccurate detection data. Finally, the translation motor 217 is started to drive the translation threaded rod 218 to rotate, so that the translation threaded bracket 219 drives the rotating bracket 101 to move horizontally, thereby facilitating the roundness detection of different positions of the gas pipe and improving the detection effect.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas pipe roundness detection device that is easy to position, comprising a detection mechanism (1), and an alarm spring assembly (124) installed inside the detection mechanism (1); A positioning mechanism (2) is arranged on the outside of the detection mechanism (1), and a lifting motor (204) is arranged on one side of the bottom of the positioning mechanism (2); It is characterized in that Also includes: The detection mechanism (1) comprises a rotating bracket (101), with limiting side plates (102) symmetrically mounted on both sides of the rotating bracket (101), a meshing gear ring (103) fixedly mounted on the inner side of the limiting side plate (102), and a rotating ring (104) rotatably connected to the inner ring of the limiting side plate (102) on one side; A plurality of fixed brackets (105) are fixedly mounted on the outer side of the rotating ring (104); an adjusting motor (106) is fixedly mounted on one side of the inner side of the fixed bracket (105); and the output end of the adjusting motor (106) is fixedly connected to a first sprocket transmission assembly (107); Wherein, an adjusting threaded rod (108) is symmetrically connected to one side of the first sprocket transmission assembly (107), an adjusting threaded sleeve (109) is threadedly connected to the middle of the adjusting threaded rod (108), and an adjusting threaded bracket (110) is fixedly connected between the two adjusting threaded sleeves (109); The bottom of the adjusting threaded bracket (110) is fixedly connected to a limit bracket (111), the bottom of the limit bracket (111) is provided with an electric telescopic rod (112), both sides of the bottom of the electric telescopic rod (112) are rotatably connected to limit clamping arms (113), the limit clamping arms (113) are provided with an angle display plate (114) near the outside of the electric telescopic rod (112), and the inside of the limit clamping arms (113) is rotatably connected to a limit roller (115).

2. The gas pipe roundness detection device that is easy to locate according to claim 1 is characterized by: First rotating supports (116) are symmetrically arranged on both sides of the bottom of the limiting bracket (111); the bottom of the first rotating support (116) is rotatably connected to a supporting sleeve (117); an adjusting ruler (118) is slidably connected inside the supporting sleeve (117); a first locking knob (119) is threadedly connected to one side of the supporting sleeve (117); and the end of the adjusting ruler (118) is rotatably connected to a second rotating support (120).

3. The gas pipe roundness detection device that is easy to locate according to claim 2 is characterized by: A detection bracket (121) is fixedly mounted on the front side of the fixed bracket (105); second locking knobs (122) are symmetrically threadedly connected to both sides of the detection bracket (121); a detection ruler (123) is slidably connected inside the detection bracket (121); the alarm spring assembly (124) is fixedly mounted on the end of the detection ruler (123); and a detection roller (125) is fixedly mounted on one side of the alarm spring assembly (124).

4. The gas pipe roundness detection device that is easy to locate according to claim 3 is characterized by: A first rotating motor (126) is fixedly installed inside the fixed bracket (105); an output end of the first rotating motor (126) is fixedly connected to a rotating gear (127); the rotating gear (127) is meshingly connected to the meshing gear ring (103); three fixed brackets (105) are provided, and are arranged at equal angles of 120 degrees around the circumference.

5. The gas pipe roundness detection device that is easy to locate according to claim 1 is characterized by: The positioning mechanism (2) comprises a mobile base (201), lifting brackets (202) are symmetrically mounted on both sides of the top of the mobile base (201), the tops of the two lifting brackets (202) are fixedly connected to translation brackets (203), the lifting motor (204) is fixedly mounted on one side of the inside of the mobile base (201), and the output end of the lifting motor (204) is fixedly connected to a second sprocket transmission assembly (205).

6. The gas pipe roundness detection device that is easy to locate according to claim 5 is characterized by: The top of the second sprocket transmission assembly (205) is symmetrically connected to a lifting threaded rod (206), the middle of the lifting threaded rod (206) is threadedly connected to a lifting threaded sleeve (207), a second rotating motor (208) is fixedly mounted on one side of the top of the lifting threaded sleeve (207), the output end of the second rotating motor (208) is fixedly connected to a third sprocket transmission assembly (209), and the bottom of the third sprocket transmission assembly (209) is fixedly connected to a first clamping bracket (210).

7. The gas pipe roundness detection device that is easy to locate according to claim 6 is characterized by: A second clamping bracket (211) is rotatably connected to one side of the middle of the first clamping bracket (210); an adjusting knob (212) is rotatably connected to one side of each of the first clamping bracket (210) and the second clamping bracket (211); a bidirectional threaded rod (213) is fixedly connected to one side of the adjusting knob (212); a clamping threaded sleeve (214) is threadedly connected to the middle of the bidirectional threaded rod (213); and a clamping sleeve (215) is slidably connected to the outer side of the clamping threaded sleeve (214).

8. The gas pipe roundness detection device that is easy to locate according to claim 7 is characterized by: A third locking knob (216) is threadedly connected to one side of the inner portion of the clamping sleeve (215); a translation motor (217) is fixedly mounted on one side of the translation bracket (203); a translation threaded rod (218) is fixedly connected to the output end of the translation motor (217); a translation threaded bracket (219) is threadedly connected to the middle portion of the translation threaded rod (218); and the translation threaded bracket (219) is fixedly mounted on the top of the rotating bracket (101).

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