Laser type pipeline diameter measuring instrument

Abstract

The invention discloses a laser type pipeline diameter measuring instrument, belongs to the field of pipeline diameter measuring instruments, and aims to solve the problems that technical personnel lose a process analysis data source of a pipeline, so that chemical pipeline process optimization is lack of direct support and can only depend on experience for adjustment, the optimization efficiency is low, and the precision is insufficient. The piston rod is fixedly connected to the output end of the air cylinder, the motor is fixedly connected to one end of the piston rod, the rotating shaft is fixedly connected to the output end of the motor, the laser pipeline diameter measuring instrument is fixedly connected to the end portion of the outer side of the rotating shaft, and a pushing mechanism is arranged on the outer side of the middle portion of the rotating shaft. Soft and hard impurities are sequentially cleaned, the impurities are immediately detected by the laser diameter measuring instrument after being cleaned each time, and the content of various impurities is calculated by a data difference method, so that a worker can accurately analyze the impurity composition, and a clear data basis is provided for process improvement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipe calipers, in particular to a laser pipe caliper. BACKGROUND

[0002] In current chemical pipeline detection, laser pipe calipers are one of the mainstream devices, and are widely used in chemical production scenes where vertical pipes are widely used. The core reasons are as follows: first, core chemical equipment such as reaction kettles, rectifying columns, and vertical storage tanks are vertically arranged, and their discharge outlets and side line interfaces are naturally downward, so vertical pipes are needed to connect downstream processes to form a standard process of "equipment-vertical pipe-horizontal transportation"; second, high-viscosity media such as resins and sugar syrup, and solid-containing media such as suspensions and catalyst slurries flow more efficiently with the aid of gravity, and vertical pipes can avoid the problems of medium retention and deposition that often occur in horizontal pipes; third, the space of a factory workshop is limited, and vertical pipes can utilize three-dimensional space to reduce the occupied area and adapt to dense equipment layout, so they become the preferred choice for connecting production links.

[0003] Laser calipers are widely used to monitor cracks, corrosion, and other structural defects in the inner walls of these vertical pipes to ensure the safety of chemical transportation due to their non-contact detection, high data sampling accuracy, and fast detection efficiency. Their working principle relies on the complete scanning of the inner wall of the pipe by a laser beam, which generates inner wall profile data through laser reflection signals, and then identifies abnormalities. However, scabs often appear inside vertical pipes, which are mainly medium residues and deposits, and chemical reaction byproducts, and their physical form is usually an irregular attached layer.

[0004] These scabs can block the true surface of the inner wall of the pipe, leading to missed crack detection, and their own reflection signals are mixed with normal pipe wall signals, making it easy to produce false data. Therefore, technicians need to remove the scabs before detection.

[0005] However, scabs are direct data carriers of pipe medium residues and process running states: the composition of scabs can be used to determine whether the medium reaction is complete, the thickness distribution can be used to analyze whether the flow rate is uniform, and the production cycle can be used to determine the maintenance interval. However, the existing "pre-cleaning" operation not only solves the detection interference but also removes the scabs, so technicians lose the source of process analysis data for the pipe, leading to a lack of direct support for chemical pipeline process optimization, which can only rely on experience adjustment and has the problems of low optimization efficiency and insufficient precision.

[0006] To solve the above problems, a laser pipe caliper is proposed. SUMMARY

[0007] The laser pipeline caliper aims to solve the problem that technicians lose the source of process analysis data of the pipeline, which leads to the lack of direct support for the optimization of the chemical pipeline process and can only rely on experience adjustment, and the low optimization efficiency and insufficient precision.

[0008] To achieve the above object, the present application provides the following technical scheme: a laser pipeline caliper, comprising a cylinder, a piston rod fixedly connected to the output end of the cylinder, a motor fixedly connected to one end of the piston rod, a rotating shaft fixedly connected to the output end of the motor, a laser pipeline caliper fixedly connected to the outer side end of the rotating shaft, a pushing mechanism arranged on the outer side of the middle part of the rotating shaft, and an elastic mechanism arranged at one end of the pushing mechanism. The pushing mechanism comprises a rotating assembly and a guide assembly, and the guide assembly is arranged on the outer side of the rotating assembly. The rotating assembly comprises a fixed disc fixedly connected to the outer side of the motor, a first guide groove arranged in the inside of the fixed disc, a second guide groove communicated with one end of the first guide groove, a third guide groove communicated with one end of the second guide groove, a rotating rod fixedly connected to the outer side of the middle part of the rotating shaft, a first hole arranged in the inner side of the rotating rod, a sliding block horizontally and slidably connected to the inner side of the first hole, a second hole arranged in the inner side of the sliding block, a first push rod arranged in the inner side of the second hole, a first guide rod fixedly connected to the first push rod and arranged in the inner side of the first guide groove, and the end part of the first guide rod is in the shape of a hemisphere.

[0009] Preferably, the appearance structures of the first guide groove, the second guide groove and the third guide groove are all in the shape of a vortex, the first guide groove, the second guide groove and the third guide groove are in clearance fit with the first guide rod, and the diameters of the first guide groove, the second guide groove and the third guide groove gradually increase.

[0010] Preferably, the central axis of the first hole is perpendicular to the central axis of the rotating shaft, and the upper and lower surfaces of the sliding block are attached to the upper and lower inner surfaces of the first hole.

[0011] Preferably, the width of the second hole near the fixed disc is greater than the width of the second hole away from the fixed disc, and the outer surface of the first push rod is attached to the inner surface of the second hole away from the fixed disc.

[0012] Preferably, the guide assembly comprises a second guide rod fixedly connected to the lower surface of the first push rod, a push plate fixedly connected to the outer surface of the first push rod, a first spring fixedly connected to the end surface of the push plate away from the motor, a fourth guide groove for nesting the second guide rod arranged in the inner surface of the first hole, a second spring fixedly connected to the rotating rod and arranged on the end surface of the sliding block, and an elastic telescopic rod fixedly connected to the end of the first push rod away from the motor.

[0013] Preferably, the outer side of the push plate is attached to the inner side of the second hole near one end of the fixed disc, and the outer appearance of the push plate is a cuboid.

[0014] Preferably, the fourth guide groove is provided with a point a near the outer side of the end of the rotating shaft, the fourth guide groove is provided with a point b near the inner side of one end of the rotating shaft, the fourth guide groove is provided with a point c far from the outer side of the end of the rotating shaft, the fourth guide groove is provided with a point d far from the inner side of one end of the rotating shaft, the point a of the fourth guide groove is closer to the motor than the point b of the fourth guide groove, and the point c of the fourth guide groove is farther from the motor than the point d of the fourth guide groove.

[0015] Preferably, the elastic mechanism comprises a fixed plate fixedly connected to one end of the telescopic end of the elastic telescopic rod, a silica gel plate fixedly connected above the side of the fixed plate far from the rotating shaft, a recess provided below the fixed plate, a baffle vertically and slidably connected to the side of the fixed plate far from the rotating shaft, a fourth hole provided in the interior of the baffle, a pull rod provided inside the fourth hole, the outer appearance of the pull rod being a cuboid, the inner side of the fourth hole being attached to the outer side of the pull rod, a hard scraper fixedly connected to one end of the pull rod far from the rotating shaft, a grinding texture provided on the upper surface of the hard scraper, a fifth guide groove provided in the inner side of the fourth hole, the outer appearance of the fifth guide groove being wavy, a sixth guide groove in communication with the lower part of the fifth guide groove, a third guide rod provided in the inner side of the fifth guide groove and fixedly connected to the pull rod, and a fourth spring provided on the lower surface of the pull rod and fixedly connected to the fixed plate.

[0016] Preferably, the outer sides of the plurality of hard scrapers are attached when the plurality of fourth springs are in a natural state.

[0017] Preferably, the outer appearance of the sixth guide groove is an inclined straight line, and the inclined direction of the sixth guide groove is towards the rotating shaft.

[0018] 1. Compared with the prior art, the present application has the beneficial effects that: the present application controls the cleaning component to extend radially in stages through the vortex guide groove, sequentially cleans soft and hard impurities, and immediately detects after each cleaning by the laser diameter measuring instrument, calculates the content of various impurities through the data difference method, so that the worker can accurately analyze the impurity composition, and provides clear data basis for process improvement.

[0019] 2. The present application can accurately evaluate the condition of the pipe wall itself, identify defects such as cracks, and improve the accuracy of the diagnosis of the structure of the pipe by finally measuring the inner surface of the pipe wall without impurity coverage after the hard impurities are completely cleaned.

[0020] 3. The present application cooperates with the detection sensor to work, so that the measurement of the exposed pipe wall can be completed as soon as the cleaning action is completed, thereby minimizing the interference of the falling impurities in the upper uncleaned area on the measurement results, and ensuring the accuracy of the data.

[0021] 4. The application cleans the adhering impurities on the inner wall of the pipeline by the cleaning mechanism while completing the measurement task, thereby relatively increasing the inner diameter of the pipeline and improving the conveying efficiency in subsequent use.

[0022] 5. The application detects the pipeline in segments by the detection process in the working range of the cleaning tool, so that the detection data of impurity content and pipe wall state can be accurately positioned to a specific pipe segment, thereby improving the fine degree of detection.

[0023] 6. The application removes the soft impurities in the area by the pre-process before detecting the hard impurities, thereby avoiding the reflection interference of soft impurities on the laser signal and improving the signal-to-noise ratio and accuracy of hard impurity content measurement.

[0024] 7. The application drives the scraper to produce reciprocating polishing motion through the wave-shaped guide groove when the hard scraper encounters firmly adhered impurities, thereby effectively removing stubborn impurities and avoiding scratches on the inner wall of the pipeline caused by forced advancement.

[0025] 8. The cleaning mechanism can adaptively avoid and not be mistaken for hard impurities when encountering structural protrusions such as welds that cannot be polished, thereby accurately identifying abnormal structural features and eliminating interference for subsequent diagnosis.

[0026] 9. The application ensures the spatiotemporal consistency of all information by sequentially obtaining original data, soft / hard impurity data and pipe wall body data at the same location, so that the system can correlate and analyze impurity distribution and pipeline structural features, accurately distinguish different causes such as "process problems", "flow field characteristics" or "accidental damage", and realize the leap from simple measurement to intelligent diagnosis. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall three-dimensional structure of the application; Figure 2 is a schematic diagram of the left view cross-sectional structure of the first guide groove of the application; Figure 3 is a schematic diagram of the appearance structure of the rotating rod of the application; Figure 4 is a schematic diagram of the top view structure of the fourth guide groove of the application; Figure 5 is a schematic diagram of the structure at point A in the application; Figure 4 Figure 6 is a schematic diagram of the appearance structure of the fixed plate of the application; Figure 7 is a schematic diagram of the left view cross-sectional structure of the fixed plate of the application; Figure 8 ​It is the fifth guide groove appearance schematic diagram of the application.

[0028] In the figure: 1, cylinder; 2, piston rod; 3, motor; 4, rotating shaft; 5, laser pipe diameter measuring instrument; 6, pushing mechanism; 7, elastic mechanism; 61, rotating assembly; 62, guide assembly; 6101, fixed disc; 6102, first guide groove; 6103, second guide groove; 6104, third guide groove; 6105, rotating rod; 6106, first hole; 6107, sliding block; 6108, second hole; 6110, first push rod; 6111, first guide rod; 6201, second guide rod; 6202, push plate; 6206, first spring; 6203, fourth guide groove; 6204, second spring; 6205, elastic telescopic rod; 701, fixed plate; 702, silica gel plate; 703, groove; 704, baffle; 705, fourth hole; 706, pull rod; 707, hard scraper; 708, fifth guide groove; 709, sixth guide groove; 710, third guide rod; 713, fourth spring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] Please refer to Figures 1-8 The present application provides a technical solution: a laser pipe diameter measuring instrument, comprising a cylinder 1, a piston rod 2 fixedly connected to the output end of the cylinder 1, a motor 3 fixedly connected to one end of the piston rod 2, a rotating shaft 4 fixedly connected to the output end of the motor 3, a laser pipe diameter measuring instrument 5 fixedly connected to the outer side end of the rotating shaft 4, a pushing mechanism 6 provided on the outer side of the middle part of the rotating shaft 4, and an elastic mechanism 7 provided at one end of the pushing mechanism 6. The pushing mechanism 6 comprises a rotating assembly 61 and a guide assembly 62, and the guide assembly 62 is provided on the outer side of the rotating assembly 61. The rotating assembly 61 comprises a fixed disc 6101 fixedly connected to the outer side of the motor 3, the inside of the fixed disc 6101 is provided with a first guide groove 6102, one end of the first guide groove 6102 is communicated with a second guide groove 6103, one end of the second guide groove 6103 is communicated with a third guide groove 6104, the outer appearance structures of the first guide groove 6102, the second guide groove 6103 and the third guide groove 6104 are all spiral shapes, the specific one is involute spiral, and the matching mode of the first guide groove 6102, the second guide groove 6103, the third guide groove 6104 and the first guide rod 6111 is gap matching, and the diameters of the first guide groove 6102, the second guide groove 6103 and the third guide groove 6104 gradually increase, so that the outward moving distance of the first guide rod 6111 will become larger when the first guide rod 6111 moves in the first guide groove 6102, the second guide groove 6103 and the third guide groove 6104, the outer side of the middle part of the rotating shaft 4 is fixedly connected with a rotating rod 6105, the inside of the rotating rod 6105 is provided with a first hole 6106, the inside of the first hole 6106 is transversely and slidably connected with a sliding block 6107, the inside of the sliding block 6107 is provided with a second hole 6108, the inside of the second hole 6108 is provided with a first push rod 6110, the inside of the first guide groove 6102 is provided with a first guide rod 6111 fixedly connected with the first push rod 6110, the central axis of the first hole 6106 is perpendicular to the central axis of the rotating shaft 4, and the upper and lower surfaces of the sliding block 6107 are attached to the inside upper and lower surfaces of the first hole 6106, so that the sliding block 6107 will not shake when moving in the inside of the first hole 6106, the width of the second hole 6108 close to one end of the fixed disc 6101 is greater than the width of the second hole 6108 away from one end of the fixed disc 6101, and the outer surface of the first push rod 6110 is attached to the inner surface of the second hole 6108 away from one end of the fixed disc 6101, so that the first push rod 6110 will not rotate and shake when moving in the inside of the second hole 6108, and the end part of the first guide rod 6111 is in a semispherical shape.

[0031] The guide assembly 62 comprises a second guide rod 6201 fixedly connected to the lower surface of the first push rod 6110, the outer surface of the first push rod 6110 is fixedly connected with a push plate 6202, the end surface of the push plate 6202 away from the motor 3 is fixedly connected with a first spring 6206, the inner surface of the first hole 6106 is provided with a fourth guide groove 6203 for nesting the second guide rod 6201, the end surface of the sliding block 6107 is fixedly connected with a second spring 6204 fixedly connected with the rotating rod 6105, the end of the first push rod 6110 away from the motor 3 is fixedly connected with an elastic telescopic rod 6205, the outer surface of the push plate 6202 is attached to the inner surface of the second hole 6108 close to one end of the fixed disc 6101, and the outer appearance structure of the push plate 6202 is a cuboid, so that the push plate 6202 will not rotate when moving in the inside of the second hole 6108.

[0032] The fourth guide slot 6203 is provided with point a near the outer side of the rotating shaft 4, the fourth guide slot 6203 is provided with point b near the inner side of one end of the rotating shaft 4, the fourth guide slot 6203 is provided with point c away from the outer side of the rotating shaft 4, the fourth guide slot 6203 is provided with point d away from the inner side of one end of the rotating shaft 4, the point a of the fourth guide slot 6203 is closer to the motor 3 than the point b of the fourth guide slot 6203, and the point c of the fourth guide slot 6203 is farther away from the motor 3 than the point d of the fourth guide slot 6203, so that the second guide rod 6201 can move to the side of the fourth guide slot 6203 close to the motor 3 when moving back to the position of the point a of the fourth guide slot 6203, and the second guide rod 6201 can move to the side of the fourth guide slot 6203 away from the motor 3 when moving back to the position of the point c of the fourth guide slot 6203.

[0033] The elastic mechanism 7 comprises a fixed plate 701 fixedly connected to one end of the elastic telescopic rod 6205, a silica gel plate 702 fixedly connected above the side away from the rotating shaft 4 of the fixed plate 701, a recess 703 arranged below the fixed plate 701, a baffle plate 704 vertically and slidably connected to the side away from the rotating shaft 4 of the fixed plate 701, a fourth hole 705 arranged in the interior of the baffle plate 704, a pull rod 706 arranged inside the fourth hole 705, the pull rod 706 being a cuboid in appearance, the inner side of the fourth hole 705 being attached to the outer side of the pull rod 706, a hard scraper 707 fixedly connected to one end of the pull rod 706 away from the rotating shaft 4, a polishing texture formed on the upper surface of the hard scraper 707, the polishing texture being a plurality of sawtooth-shaped protrusions arranged in an array, a fifth guide slot 708 arranged on the inner side of the fourth hole 705, the fifth guide slot 708 being wavy in appearance, a sixth guide slot 709 in communication with the lower side of the fifth guide slot 708, the sixth guide slot 709 being inclined and linear in appearance, the inclined direction of the sixth guide slot 709 being toward the rotating shaft 4, a third guide rod 710 arranged on the inner side of the fifth guide slot 708 and fixedly connected to the pull rod 706, a fourth spring 713 arranged on the lower surface of the pull rod 706 and fixedly connected to the fixed plate 701, the outer side of the plurality of hard scrapers 707 being attached when the plurality of fourth springs 713 are in a natural state.

[0034] When the vertical pipe needs to be detected, the laser pipe caliper is inserted into the inside of the vertical pipe from the lower port of the vertical pipe, the cylinder 1 drives the piston rod 2, the motor 3 and the rotating shaft 4 to move upwards, and then drives the laser pipe caliper 5, the hard scraper 707 and the silica gel plate 702 to move upwards, the motor 3 drives the rotating shaft 4 and the laser pipe caliper 5 to rotate, the original inner diameter of the vertical pipe is detected for one circle and the data is recorded, because the outer appearance structures of the first guide groove 6102, the second guide groove 6103 and the third guide groove 6104 are all vortex-shaped, the cooperation mode of the first guide groove 6102, the second guide groove 6103, the third guide groove 6104 and the first guide rod 6111 is gap cooperation, and the diameters of the first guide groove 6102, the second guide groove 6103 and the third guide groove 6104 gradually increase, so that the first guide rod 6111 moves to the inside of the second guide groove 6103 after rotating for one circle at the inside of the first guide groove 6102, the first guide rod 6111 drives the first push rod 6110, the elastic telescopic rod 6205, the fixed plate 701 and the silica gel plate 702 to move to one side of the pipe wall, at this time the silica gel plate 702 deeply enters the inside of the soft impurities of the vertical pipe, and continues to rotate for one circle to clean down the soft impurities, the soft impurities fall under the action of gravity, the laser pipe caliper 5 follows to detect and record data, after the first guide rod 6111 moves at the inside of the second guide groove 6103, the first guide rod 6111 will move at the inside of the third guide groove 6104, the motor 3 is continuously started to drive the first guide rod 6111 at the third guide groove 6104, so that the first guide rod 6111 drives the elastic telescopic rod 6205, the fixed plate 701, the silica gel plate 702 and the hard scraper 707 to move to one side of the pipe wall, so that the silica gel plate 702 is compressed, the hard scraper 707 deeply enters the inside of the hard impurities of the vertical pipe, and continues to rotate for one circle to clean down the hard impurities, the hard impurities fall under the action of gravity, the laser pipe caliper 5 follows to detect and record data, because the first guide rod 6111 moves outwardly, the second guide rod 6201 moves at the inside of the fourth guide groove 6203, because the point a of the fourth guide groove 6203 is closer to the motor 3 than the point b of the fourth guide groove 6203, and the point c of the fourth guide groove 6203 is farther away from the motor 3 than the point d of the fourth guide groove 6203, so that the second guide rod 6201 can move to one side of the fourth guide groove 6203 away from the motor 3 when moving back at the point c position of the fourth guide groove 6203, after the hard scraper 707 finishes cleaning the hard impurities, when the second guide rod 6201 moves to the point c position, because the end shape of the first guide rod 6111 is hemispherical, under the pulling of the second spring 6204, the first guide rod 6111 moves out of the inside of the third guide groove 6104 and is limited by the fourth guide groove 6203, the first guide rod 6111 returns to the inside of the first guide groove 6102 again to work next time.

[0035] After detecting the original inner diameter of the vertical pipe for one circle and recording the data, the data records the content of hard impurities and soft impurities together. After the silica gel plate 702 is cleaned for one circle, the data records the content of hard impurities. The difference between the two sets of data is the content of soft impurities. The staff can infer the process in reverse according to the content of hard impurities and soft impurities, and improve the process accordingly to improve product quality.

[0036] After the hard scraper 707 is cleaned for one circle, there is no impurity to block the crack, and the data records the crack inside the pipe wall, improving the detection accuracy.

[0037] After the hard scraper 707 and the silica gel plate 702 are cleaned, the cleaned area will be detected and recorded immediately, reducing the interference of the upper impurities and improving the detection accuracy.

[0038] In order to complete the cleaning inside the vertical pipe during the detection process, the inner diameter of the subsequent vertical pipe is increased, which can transport more products and improve work efficiency.

[0039] When detecting the content of hard impurities and soft impurities and the crack inside the pipe wall, it is determined by the cleaning range of the hard scraper 707 and the silica gel plate 702, so that the pipe needs to be checked section by section, so that the content of hard impurities and soft impurities can be located to each section, and the detection is more accurate.

[0040] When detecting hard impurities, soft impurities have been cleaned, so that the laser pipe diameter detector 5 detects hard impurities without soft impurities reflecting and other phenomena interfering with the detection effect, thereby improving the accuracy of the content of hard impurities.

[0041] When the hard scraper 707 contacts with hard impurities with strong adhesion, the corresponding hard scraper 707 will not move with the fixed plate 701, so that the pull rod 706, the hard scraper 707 and the third guide rod 710 move inside the fifth guide groove 708. The appearance structure of the fifth guide groove 708 is wavy, so that the pull rod 706, the hard scraper 707 and the third guide rod 710 are reciprocated by the fifth guide groove 708. The upper surface of the hard scraper 707 is provided with polishing texture, so that the hard scraper 707 can polish the object blocked by it. If it is hard impurities with strong adhesion, it can be polished to avoid damage to the pipe caused by forced pushing and cleaning.

[0042] In case cracks have occurred in the pipeline during previous detection, welding is usually used to repair the cracks in order to save costs, but welding can cause protrusions, according to the detection principle of the laser pipeline caliper 5, if contact is made with the welding protrusions, the hard scraper 707 cannot be cleaned by polishing, and the hard scraper 707 and the third guide rod 710 will continue to move to the inside of the sixth guide groove 709, because the sixth guide groove 709 has an inclined linear appearance, so that the third guide rod 710 moves to the side close to the rotating shaft 4 and is separated from the block, the hard scraper 707 is separated from the block of the welding protrusion, and the subsequent laser pipeline caliper 5 moves to this position and records the data at this position, so that the protrusions at this position will not be hard impurities within the normal range during the polishing process of the hard scraper 707.

[0043] In summary, the present application realizes high synchronization of cleaning, measuring and diagnosing actions in space and time, by sequentially performing "original measurement", "soft impurity cleaning and measurement", "hard impurity cleaning and measurement" and "pipe wall body measurement" on the same pipe segment position in an integrated system, ensuring the positioning consistency and comparability of all data, which enables the system not only to obtain quantitative and positioning information of impurities, but also to correlate and diagnose "abnormal impurity accumulation" and "abnormal pipe wall structure such as welding protrusion", and the processor compares with the past welding records, when it is found that there is a thicker impurity at the corresponding structural protrusion position on the past welding record, it can be determined that this is "inevitable accumulation" caused by the flow field, and the process is not a problem, and the abnormal impurity in the smooth pipe segment indicates that the process is a problem, and the process needs to be improved to avoid the disadvantages of positioning errors and data correlation caused by step-by-step operation, and when it is found that there is no welding record at this place, and there is a structural protrusion of unknown origin, the place needs to be investigated, and it is determined whether the process causes the process problem of hard impurity or other impact damage problems.

[0044] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A laser-type pipe diameter measuring instrument, comprising a cylinder (1), a piston rod (2) fixedly connected to the output end of the cylinder (1), a motor (3) fixedly connected to one end of the piston rod (2), a rotating shaft (4) fixedly connected to the output end of the motor (3), and a laser pipe diameter measuring instrument (5) fixedly connected to the outer end of the rotating shaft (4), characterized in that: A pushing mechanism (6) is provided on the outer side of the middle part of the rotating shaft (4), and an elastic mechanism (7) is provided at one end of the pushing mechanism (6). The pushing mechanism (6) includes a rotating component (61) and a guiding component (62), wherein the guiding component (62) is disposed on the outside of the rotating component (61); The rotating assembly (61) includes a fixed plate (6101) fixedly connected to the outside of the motor (3). The fixed plate (6101) has a first guide groove (6102) inside. One end of the first guide groove (6102) is connected to a second guide groove (6103), and one end of the second guide groove (6103) is connected to a third guide groove (6104). A rotating rod (6105) is fixedly connected to the outside of the middle part of the rotating shaft (4). The inner side of the rotating rod (6105) A first hole (6106) is provided, and a sliding block (6107) is slidably connected to the inner side of the first hole (6106). A second hole (6108) is provided on the inner side of the sliding block (6107). A first push rod (6110) is provided on the inner side of the second hole (6108). A first guide rod (6111) is fixedly connected to the first push rod (6110) on the inner side of the first guide groove (6102). The end of the first guide rod (6111) is hemispherical.

2. The laser-type pipe diameter measuring instrument according to claim 1, characterized in that: The first guide groove (6102), the second guide groove (6103), and the third guide groove (6104) all have a spiral shape in appearance. The first guide groove (6102), the second guide groove (6103), the third guide groove (6104) and the first guide rod (6111) are fitted with a clearance fit. The diameters of the first guide groove (6102), the second guide groove (6103), and the third guide groove (6104) gradually increase.

3. The laser-type pipe diameter measuring instrument according to claim 1, characterized in that: The central axis of the first hole (6106) is perpendicular to the central axis of the rotating shaft (4), and the upper and lower surfaces of the sliding block (6107) are in contact with the upper and lower surfaces of the inner side of the first hole (6106).

4. The laser-type pipe diameter measuring instrument according to claim 1, characterized in that: The width of the second hole (6108) near the fixed plate (6101) is greater than the width of the second hole (6108) away from the fixed plate (6101), and the outer side of the first push rod (6110) is in contact with the inner side of the second hole (6108) away from the fixed plate (6101).

5. A laser-type pipe diameter measuring instrument according to claim 1, characterized in that: The guide assembly (62) includes a second guide rod (6201) fixedly connected to the lower surface of the first push rod (6110), a push plate (6202) fixedly connected to the outer side of the first push rod (6110), a first spring (6206) fixedly connected to the end face of the push plate (6202) away from the motor (3), a fourth guide groove (6203) for nesting the second guide rod (6201) is provided on the inner side of the first hole (6106), a second spring (6204) fixedly connected to the rotating rod (6105) is fixedly connected to one end face of the sliding block (6107), and an elastic telescopic rod (6205) fixedly connected to the end of the first push rod (6110) away from the motor (3).

6. A laser-type pipe diameter measuring instrument according to claim 5, characterized in that: The outer side of the push plate (6202) is in contact with the inner side of the second hole (6108) near the fixed plate (6101), and the outer structure of the push plate (6202) is a cuboid.

7. A laser-type pipe diameter measuring instrument according to claim 5, characterized in that: The fourth guide groove (6203) has a point a near the outer end of the rotating shaft (4), a point b near the inner end of the fourth guide groove (6203) near the rotating shaft (4), a point c far from the outer end of the fourth guide groove (6203) away from the rotating shaft (4), and a point d far from the rotating shaft (4) on the inner side of the fourth guide groove (6203). Point a of the fourth guide groove (6203) is closer to the motor (3) than point b of the fourth guide groove (6203), and point c of the fourth guide groove (6203) is farther from the motor (3) than point d of the fourth guide groove (6203).

8. A laser-type pipe diameter measuring instrument according to claim 1, characterized in that: The elastic mechanism (7) includes a fixing plate (701) fixedly connected to one end of the telescopic end of the elastic telescopic rod (6205). A silicone plate (702) is fixedly connected to the upper side of the fixing plate (701) away from the rotating shaft (4). A groove (703) is provided below the fixing plate (701). A baffle (704) is vertically slidably connected to the side of the fixing plate (701) away from the rotating shaft (4). A fourth hole (705) is provided inside the baffle (704). A pull rod (706) is provided inside the fourth hole (705). The pull rod (706) has a cuboid shape, and the inner side of the fourth hole (705) is connected to the pull rod (706). The outer side of the pull rod (706) is fitted together. A hard scraper (707) is fixedly connected to one end of the pull rod (706) away from the rotating shaft (4). The upper surface of the hard scraper (707) is provided with a polishing texture. A fifth guide groove (708) is provided on the inner side of the fourth hole (705). The appearance structure of the fifth guide groove (708) is wavy. A sixth guide groove (709) is connected to the bottom of the fifth guide groove (708). A third guide rod (710) is fixedly connected to the pull rod (706) on the inner side of the fifth guide groove (708). A fourth spring (713) is fixedly connected to the fixing plate (701) on the lower surface of the pull rod (706).

9. A laser-type pipe diameter measuring instrument according to claim 8, characterized in that: When the multiple fourth springs (713) are in their natural state, the outer surfaces of the multiple hard scrapers (707) are in contact.

10. A laser-type pipe diameter measuring instrument according to claim 8, characterized in that: The sixth guide groove (709) has an inclined straight-line shape, and the inclined direction of the sixth guide groove (709) is towards the rotating shaft (4).

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