Galvanized pipe cutting surface inclination detection device and method

Abstract

The invention discloses a galvanized pipe cutting surface inclination detection device and method, and belongs to the technical field of galvanized pipe detection, the galvanized pipe cutting surface inclination detection device comprises a centering mechanism, a detection mechanism coaxially arranged with the centering mechanism, and a power mechanism connected with the detection mechanism; the centering mechanism comprises a connecting shaft, a connecting sleeve, a movable sleeve, a first rotating arm, a second rotating arm, a third rotating arm and a leveling plate, wherein the connecting sleeve and the movable sleeve are arranged on the connecting shaft; the first rotating arm and the second rotating arm are connected with the connecting sleeve; the third rotating arm is connected with the movable sleeve; and the third rotating arm is also connected with the middle parts of the first rotating arm and the second rotating arm. According to the invention, the technical problem that the reliability and the installation precision of pipeline connection cannot be ensured due to low measurement efficiency and large inclination error of the galvanized pipe cutting surface is solved, the rapid detection of the inclination of the galvanized pipe cutting surface is realized, the interference of a high noise source is effectively inhibited, and the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of galvanized pipe detection, and in particular to a device and method for detecting the inclination of a cut surface of a galvanized pipe. Background Art

[0002] The slope of the cut surface of galvanized pipe refers to the degree to which the cut plane is not perpendicular to the central axis of the pipe itself when cutting galvanized steel pipe. Ideally, a perfect cut would have the cut plane be completely perpendicular to the central axis of the pipe. However, in practice, due to tool wear, unstable feed, equipment accuracy issues, improper operation, or loose pipe fixing, the cut plane may deviate from the vertical direction, forming an inclined surface. When welding two pipe ends or connecting them with pipe fittings, excessive slope will result in poor contact between the joint surfaces, affecting the strength, sealing, and aesthetics of the connection.

[0003] In the prior art, the reference edge of a ruler is usually placed against the outer wall of a steel pipe to measure the gap or angle between the vertical edge of the ruler and the incision plane to obtain the slope of the cut surface. However, this method of detection has low measurement efficiency, and the slope error of the cut surface of the galvanized pipe is large, resulting in the inability to guarantee the reliability of the pipeline connection and the installation accuracy. Summary of the Invention

[0004] To solve the above problems, the present invention provides a first aspect of a device for detecting the slope of a cut surface of a galvanized pipe, comprising: a centering mechanism, a detection mechanism coaxially arranged with the centering mechanism, and a power mechanism connected to the detection mechanism; The centering mechanism includes: a connecting shaft, a connecting sleeve and a movable sleeve provided on the connecting shaft, a first rotating arm and a second rotating arm connected to the connecting sleeve, a third rotating arm connected to the movable sleeve, and a leveling plate connected to the first rotating arm and the second rotating arm respectively, the third rotating arm is also connected to the middle part of the first rotating arm and the second rotating arm; It also includes a pneumatic component, which is used to drive the movable sleeve to slide towards the connecting sleeve after the pneumatic component abuts against the movable sleeve, so that the first rotating arm and the second rotating arm are opened until the leveling plate abuts against the inner wall of the galvanized pipe.

[0005] In some embodiments, the pneumatic assembly includes: a cylinder, a guide rod and a piston disposed in the cylinder; The cylinder body is provided with a cavity inside, the piston is arranged in the cavity of the cylinder body, and the guide rod is connected to the piston and has both ends passing through the cylinder body; An air injection channel is provided at one end of the guide rod, and an air injection hole is provided in the middle thereof, which is connected to the air injection channel, and the air injection hole is connected to the cavity of the cylinder body; The cavity in the cylinder body located on the side where the piston is connected to the air injection hole is a pressure chamber; the pressure chamber is used to push the entire structure of the piston and the guide rod to move after the air pressure medium is injected.

[0006] In some embodiments, a connecting channel is further provided in the connecting shaft, and the end of the guide rod away from the injection flow channel is provided in the connecting channel. After the end of the guide rod away from the injection flow channel abuts against the movable sleeve, the movable sleeve is pushed to slide toward the connecting sleeve.

[0007] In some embodiments, the detection mechanism includes: a first fixed seat, a laminating roller provided on the first fixed seat, a first guide rod and a second guide rod connected to the first fixed seat, a sliding iron core connected to the first guide rod and the second guide rod, a pressure plate connected to the sliding iron core and the laminating roller, and a displacement sensor adapted to the sliding iron core; The first fixing seat is mounted on the pneumatic assembly and is rotatably connected to the pneumatic assembly via a bearing; The laminating roller is used to obtain the deviation of the pipe mouth relative to the vertical cutting surface during the rotation process after it contacts the pipe mouth of the galvanized pipe; The displacement sensor is adapted to the sliding iron core and is used to obtain the displacement of the sliding iron core; The detection mechanism further includes: a second return spring, which is arranged on the second guide rod and has one end in contact with the sliding iron core for limiting the sliding iron core.

[0008] In some embodiments, the number of the laminating roller, the first guide rod, the second guide rod, the sliding iron core, the pressure plate, and the displacement sensor in the detection mechanism is multiple; The detection mechanism further includes: a second fixing seat coaxially arranged with the first fixing seat, the second fixing seat being connected to the first fixing seat via a connecting plate; The power mechanism includes a motor, a driving wheel arranged on the motor, and a driven wheel meshed with the driving wheel, wherein the driven wheel is sleeved on the second fixing seat.

[0009] The first aspect of the invention provides a method for detecting the slope of a cut surface of a galvanized pipe, and a device for detecting the slope of a cut surface of a galvanized pipe according to any one of the above schemes, comprising the following steps: Determine the testing benchmark; Get galvanized pipe data; Determine the data stability of each data source based on galvanized pipe data; Based on the data stability of each data source, the data of each data source is integrated to determine the final data of the galvanized pipe; Determine the slope of the cutting surface based on the final data of the galvanized pipe.

[0010] In some embodiments, determining the data stability of each data source includes: Calculate the stability index based on galvanized pipe data; The stability index is calculated as follows: ; in, Indicates the The detection data matrix of the data source, Indicates the first data in the first cycle; Indicates the first round data, Indicates in The first data of the circle; Indicates in Circle individual data; ; in, ; ; in, For the The stability index of a data source.

[0011] In some embodiments, fusing data from various data sources includes: Determine the basic weight of each data source based on the stability index of each data source; Determine the adaptive spatial weight of each data source at each measurement location based on the data stability of each data source; Determine a final weight for each data source based on a base weight for each data source and an adaptive spatial weight for each data source at each measurement location; The final data of galvanized pipes is determined based on the final weight of each data source.

[0012] In some embodiments, the basic weight of the data source is calculated as follows: The basic weight of the data source is calculated as follows: ; in, Indicates the The basic weight of each data source; is the number of data sources; The adaptive spatial weight is calculated as follows: ; in, Indicates the The data source is in Adaptive spatial weighting of measurement locations; The final weight calculation method for each data source is: ; in, Shidi The final weight of each data source, is the empirical coefficient, .

[0013] In some embodiments, determining the final data of the galvanized pipe includes: Determining a bias value for each measurement location based on the final weight of each data source; The calculation method of the deviation value of each measurement position is: ; in, for Deviation value at ; Determine the galvanized pipe deviation sequence based on the deviation value at each measurement position; The specific method is: ; Determining the cutting surface slope includes: Extract the maximum deviation value in the galvanized pipe deviation sequence; The specific method is: ; ;

[0014] Calculate the slope of the cutting surface based on the maximum deviation value: The specific method is: ; in, is the slope of the cutting surface.

[0015] By adopting the above technical solution, the present invention mainly has the following technical effects: The motor is used to drive the detection mechanism to rotate at a uniform speed through the second fixed seat, and the offset of the fitting roller when it abuts against the galvanized pipe mouth is used to obtain the deviation of the pipe mouth relative to the vertical cutting surface. In the detection process, the data obtained from various data sources are integrated, thereby solving the technical problems of low measurement efficiency and large error in the inclination of the cutting surface of the galvanized pipe, which make it impossible to ensure the reliability of the pipeline connection and the installation accuracy. The rapid detection of the inclination of the cutting surface of the galvanized pipe is realized, and the interference of high noise sources is effectively suppressed to improve the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a device for detecting the slope of a cut surface of a galvanized pipe according to the present invention; Figure 2 This is a schematic structural diagram of a device for detecting the slope of a cut surface of a galvanized pipe (from another perspective) according to the present invention; Figure 3 This is a schematic diagram of the internal structure of a device for detecting the slope of a cut surface of a galvanized pipe according to the present invention; Figure 4 This is a structural schematic diagram of a centering mechanism in a device for detecting the slope of a cut surface of a galvanized pipe according to the present invention; Figure 5 This is a schematic structural diagram of a pneumatic component in a device for detecting the slope of a cut surface of a galvanized pipe according to the present invention; Figure 6 This is a schematic structural diagram of a device for detecting the slope of a cut surface of a galvanized pipe according to the present invention (some components are hidden); Figure 7 This is a schematic diagram of the internal structure of a device for detecting the slope of the cut surface of a galvanized pipe (some components are hidden) according to the present invention.

[0017] The meanings of the reference numerals are as follows: 1. Centering mechanism; 11. Connecting shaft; 111. First return spring; 112. Sliding groove; 113. Connecting channel; 12. Connecting sleeve; 13. Movable sleeve; 131. Sliding key; 14. First rotating arm; 15. Second rotating arm; 16. Third rotating arm; 17. Leveling plate; 18. Pneumatic assembly; 181. Cylinder; 182. Guide rod; 183. Piston; 184. Injection channel; 185. Injection hole; 186. Pressure chamber; 187. Injection pipe; 2. Detection mechanism; 21. First fixed seat; 22. Laminating roller; 23. First guide rod; 24. Second guide rod; 25. Sliding iron core; 26. Pressing plate; 27. Displacement sensor; 28. Second return spring; 29. ​​Second fixed seat; 3. Power mechanism; 31. Motor; 32. Driving wheel; 33. Driven wheel. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the specification of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0019] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] See also Figure 1-Figure 7 In the first aspect of the present invention, a device for detecting the inclination of the cut surface of a galvanized pipe is provided, comprising: a centering mechanism 1, a detection mechanism 2 coaxially arranged with the centering mechanism 1, and a power mechanism 3 connected to the detection mechanism 2. It should be noted that, in this embodiment, the axial direction refers to the direction of the central axis of rotation of the galvanized pipe, that is, the direction common to the central axis, and the radial direction is perpendicular to the axial direction.

[0021] In some embodiments, the centering mechanism 1 is used to align the detection device with the central axis of the galvanized pipe, and the centering mechanism 1 includes: a connecting shaft 11, a connecting sleeve 12 and a movable sleeve 13 provided on the connecting shaft 11, a first rotating arm 14 and a second rotating arm 15 connected to the connecting sleeve 12, a third rotating arm 16 connected to the movable sleeve 13, and a leveling plate 17 connected to the first rotating arm 14 and the second rotating arm 15 respectively, and the third rotating arm 16 is also connected to the middle part of the first rotating arm 14 and the second rotating arm 15.

[0022] In some embodiments, one end of the first rotating arm 14 and the second rotating arm 15 are respectively hinged to the connecting sleeve 12, and then connected to the connecting shaft 11 through the connecting sleeve 12. One end of the third rotating arm 16 is hinged to the movable sleeve 13, and the other end is hinged to the middle of the second rotating arm 15 and the first rotating arm 14. The movable sleeve 13 is movably connected to the connecting shaft 11. The above structure enables the third rotating arm 16 to drive the second rotating arm 15 and the first rotating arm 14 to rotate around the connection with the connecting sleeve 12 when the movable sleeve 13 slides on the connecting shaft 11.

[0023] Furthermore, when the movable sleeve 13 slides in the direction close to the connecting sleeve 12, it can drive multiple groups of first rotating arms 14 and second rotating arms 15 to open. By arranging multiple groups of first rotating arms 14 and second rotating arms 15 circumferentially on the connecting shaft 11, the leveling plate 17 is used to abut against the inner wall of the galvanized pipe, and then the inner wall of the galvanized pipe is used as a reference to align the connecting shaft 11 with the central axis of the galvanized pipe, so that the detection mechanism 2 can be used to abut against the pipe mouth of the galvanized pipe to measure the slope of the cutting surface.

[0024] In some more preferred embodiments, a first return spring 111 is further provided on the connecting shaft 11, and the two ends of the first return spring 111 are respectively in contact with the connecting sleeve 12 and the movable sleeve 13, so that before or after the measurement of the inclination of the cut surface of the galvanized pipe, the movable sleeve 13 is driven to slide away from the connecting sleeve 12, and the multiple groups of first rotating arms 14 and second rotating arms 15 are driven to retract and reset.

[0025] Furthermore, the movable sleeve 13 is cylindrical and has a sliding key 131 inside. The connecting shaft 11 has a sliding groove 112 inside that is compatible with the sliding key 131. The sliding key 131 slides in the sliding groove 112 to realize the sliding process of the movable sleeve 13 on the connecting shaft 11.

[0026] In some embodiments, the centering mechanism 1 further includes a pneumatic assembly 18. After the pneumatic assembly 18 abuts against the movable sleeve 13, it is used to drive the movable sleeve 13 to slide in a direction close to the connecting sleeve 12, thereby causing the first rotating arm 14 and the second rotating arm 15 to open until the leveling plate 17 abuts against the inner wall of the galvanized pipe. Furthermore, the pneumatic assembly 18 includes: a cylinder 181, a guide rod 182 and a piston 183 disposed in the cylinder 181. In some embodiments, the cylinder 181 is a container for forming a closed pressure chamber, and has a cavity therein. The piston 183 is disposed in the cavity of the cylinder 181. The guide rod 182 is connected to the piston 183 and both ends of the guide rod 182 pass through the cylinder 181.

[0027] Furthermore, an injection channel 184 is defined at one end of the guide rod 182, and an injection hole 185 is defined in the middle thereof, communicating with the injection channel 184. The injection hole 185 is communicated with the cavity of the cylinder body 181. The cavity in the cylinder body 181, located on the side where the piston 183 is connected to the injection hole 185, serves as a pressure chamber 186. By providing the pressure chamber 186, an operator can sequentially inject pneumatic medium into the pressure chamber 186 through the injection channel 184 and the injection hole 185, thereby pushing the overall structure of the piston 183 and the guide rod 182 to move in a direction that increases the volume of the pressure chamber 186. In some embodiments, the pneumatic assembly 18 further includes an injection pipe 187 connected to the injection channel 184 for injecting pneumatic medium into the pressure chamber 186 through the injection channel 184 and the injection hole 185.

[0028] In some embodiments, a connecting channel 113 is further provided in the connecting shaft 11, and the end of the guide rod 182 away from the injection flow channel 184 is provided in the connecting channel 113. By abutting the end of the guide rod 182 away from the injection flow channel 184 against the movable sleeve 13, the movable sleeve 13 is pushed to slide toward the direction close to the connecting sleeve 12 until it abuts against the connecting sleeve 12 and pushes the movable sleeve 13 to slide toward the direction close to the connecting sleeve 12.

[0029] In some embodiments, the detection mechanism 2 is a part for detecting the inclination of the cut surface of the galvanized pipe, and the detection mechanism 2 includes: a first fixed seat 21, a bonding roller 22 arranged on the first fixed seat 21, a first guide rod 23 and a second guide rod 24 connected to the first fixed seat 21, a sliding iron core 25 connected to the first guide rod 23 and the second guide rod 24, a pressure plate 26 connected to the sliding iron core 25 and the bonding roller 22, and a displacement sensor 27 adapted to the sliding iron core 25.

[0030] In some embodiments, the first fixing seat 21 is a circular ring structure, and the first fixing seat 21 is sleeved on the pneumatic component 18 and is rotatably connected to the pneumatic component 18 via a bearing. In some embodiments, by arranging the first fixing seat 21 and the pneumatic component 18 coaxially, the centering mechanism 1 is aligned with the center axis of the galvanized pipe, and the center axis of the circular first fixing seat 21 can be aligned with the center axis of the galvanized pipe.

[0031] Furthermore, the laminating roller 22 is circumferentially arranged on the first fixed seat 21, and one end of the laminating roller 22 is hinged to the first fixed seat 21. The above design enables the laminating roller 22 to roll along the galvanized pipe mouth when the first fixed seat 21 rotates after the laminating roller 22 abuts against the galvanized pipe mouth.

[0032] In some embodiments, the first guide rod 23 and the second guide rod 24 are arranged parallel to the centering mechanism 1. After the centering mechanism 1 aligns the detection device with the central axis of the galvanized pipe, the first guide rod 23 and the second guide rod 24 are parallel to the central axis of the galvanized pipe.

[0033] In some embodiments, the laminating roller 22 is used to obtain the deviation of the pipe mouth relative to the vertical cutting surface during the rotation process after it abuts against the galvanized pipe mouth. Furthermore, when the laminating roller 22 is in contact with the pipe mouth, when the laminating roller 22 rotates along the pipe mouth, if there is a deviation of the pipe mouth relative to the vertical cutting surface, the laminating roller 22 will be deflected with the hinge with the first fixed seat 21 as the axis. The deflection will drive the sliding iron core 25 to slide on the first guide rod 23 and the second guide rod 24 through the pressure plate 26. That is, the deflection of the laminating roller 22 can be obtained by obtaining the sliding amount of the sliding iron core 25 on the first guide rod 23 and the second guide rod 24, and then the deviation of the pipe mouth relative to the vertical cutting surface can be obtained through the deflection of the laminating roller 22. Finally, the slope of the cutting surface is calculated through the deviation of the pipe mouth relative to the vertical cutting surface.

[0034] In some embodiments, the displacement sensor 27 is adapted to the sliding core 25 and is used to obtain the displacement of the sliding core 25 .

[0035] Furthermore, the number of the laminating roller 22, the first guide rod 23, the second guide rod 24, the sliding iron core 25, the pressure plate 26 and the displacement sensor 27 in the detection mechanism 2 is multiple groups. The displacement of the sliding iron core 25 is obtained respectively by multiple displacement sensors 27, and the data is processed, which can effectively improve the measurement accuracy. The data processing process will be further explained below.

[0036] In some more preferred embodiments, the detection mechanism 2 also includes: a second reset spring 28, which is arranged on the second guide rod 24, and one end of the second reset spring 28 is in contact with the sliding iron core 25, and is used to limit the sliding iron core 25, thereby limiting the rotation degree of the bonding roller 22, so that the deflection amount of the bonding roller 22 can be timely fed back to the sliding iron core 25 through the pressure plate 26.

[0037] Furthermore, the detection mechanism 2 further includes: a second fixing seat 29 coaxially arranged with the first fixing seat 21 . The second fixing seat 29 is also a circular ring structure and is connected to the first fixing seat 21 via a connecting plate.

[0038] In some embodiments, the power mechanism 3 is a part used to generate power and transmit it to subsequent components or actuators. The power mechanism 3 includes a motor 31, a driving wheel 32 provided on the motor 31, and a driven wheel 33 meshing with the driving wheel 32. The driven wheel 33 is sleeved on the second fixed seat 29. The motor 31 can convert electrical energy into mechanical energy based on the principle of electromagnetic induction. The driving wheel 32 and the driven wheel 33 can be mutually meshing gear structures. By connecting the driving wheel 32 to the output shaft of the motor 31, the driven wheel 33 is sleeved on the second fixed seat 29, so that the motor 31 is used to work, and the detection mechanism 2 rotates at a uniform speed through the second fixed seat 29. The offset of the bonding roller 22 when it abuts against the galvanized pipe mouth is used to obtain the deviation of the pipe mouth relative to the vertical cutting surface.

[0039] A second aspect of the present invention provides a method for detecting the slope of a cut surface of a galvanized pipe, based on a device for detecting the slope of a cut surface of a galvanized pipe, comprising the following steps: S1. Determine the testing benchmark; In some embodiments, the detection reference can be confirmed by aligning the detection device with the central axis of the galvanized pipe and then abutting the laminating roller 22 against the pipe mouth of the galvanized pipe. In some embodiments, when the laminating roller 22 abuts against the pipe mouth of the galvanized pipe, the laminating roller 22 can be in a flipped state, that is, the second return spring 28 is in a compressed state, to ensure that the rotation process of the laminating roller 22 can fully abut against the pipe mouth of the galvanized pipe, thereby ensuring measurement accuracy.

[0040] S2. Obtain galvanized pipe data; In some embodiments, the galvanized pipe data may be a parameter characterizing the inclination of the cutting surface of the galvanized pipe; in some embodiments, the galvanized pipe data may include a pipe mouth deviation, which is used to represent the offset of the actual pipe mouth relative to the vertical cutting surface (ideal incision); in some embodiments, the galvanized pipe pipe mouth deviation may be obtained based on the slip of the sliding iron core 25, and the slip of the sliding iron core 25 may be measured by a displacement sensor 27.

[0041] In some embodiments, the acquired galvanized pipe data may be repeated data. For example, the motor 31 may drive the detection mechanism 2 to rotate multiple times along the pipe mouth, so that the same data source (the same displacement sensor) can repeatedly acquire the galvanized pipe data.

[0042] In some embodiments, the galvanized pipe mouth deviation is calculated as follows: ; in, is the galvanized pipe mouth deviation; is the effective length of the laminating roller (from the hinge point to the contact point); is the length of the pressure plate arm (from the hinge point to the sliding core); is the sliding amount of the sliding core; is the system backlash, which represents the unintended motion in the mechanical transmission system; is the guide rod tilt compensation coefficient; S3. Determine the data stability of each data source based on the galvanized pipe data; In some embodiments, the data stability is used to describe the degree of repetition of the galvanized pipe data obtained by each data source. The higher the repetition between repeated data obtained from the same data source, the more stable the data obtained from the same data source.

[0043] In some embodiments, determining the data stability of each data source includes: Calculate the stability index based on galvanized pipe data; In some embodiments, the stability index is calculated as follows: Assume that the detection data matrix obtained from the same data source is: ; in, Indicates the The detection data matrix of the data source, Indicates the first data in the first cycle; Indicates the first round data, Indicates in The first data of the circle; Indicates in The data of the circle; ; in, ; ; in, For the Stability index of each data source; In some embodiments, Data source stability index The closer it is to 1, the better the repeatability of the data source and the higher the stability.

[0044] S4. Based on the data stability of each data source, the data of each data source is integrated to determine the final data of the galvanized pipe; In some embodiments, the data obtained from various data sources can be fused by setting weight distribution to obtain the final galvanized pipe data. In some embodiments, a data source with higher data stability can obtain a higher weight, and then the data obtained from various data sources are fused according to the weight, thereby effectively suppressing the interference of high noise sources and improving detection accuracy.

[0045] In some embodiments, fusing data from various data sources includes: S401. Determine a basic weight for each data source based on the stability index of each data source; In some embodiments, a basic weight may be set for each data source according to its stability index. In some embodiments, the basic weight of a data source is calculated as follows: ; in, Indicates the The basic weight of each data source; is the number of data sources; S402, determining an adaptive spatial weight of each data source at each measurement location based on the data stability of each data source; In some embodiments, adaptive spatial weighting describes the dynamic, point-by-point adjustment of the weight of each sensor across data sources based on the error between sensors at the same measurement location. For example, the higher the repeatability of a data source at a particular measurement location, the higher the weight assigned to that data source at that measurement location.

[0046] In some embodiments, the adaptive spatial weight is calculated as follows: ; in, Indicates the The data source is in Adaptive spatial weighting of measurement locations; S403, determining a final weight of each data source based on a basic weight of each data source and an adaptive spatial weight of each data source at each measurement location; In some embodiments, the final weight of each data source is calculated as follows: ; in, Shidi The final weight of each data source, is the empirical coefficient, ; S404. Determine the final data of the galvanized pipe based on the final weight of each data source; In some embodiments, after determining the final weight of each data source, the final data of the galvanized pipe can be determined by weighted summation; The final data of the galvanized pipe is determined as follows: Determining a bias value for each measurement location based on the final weight of each data source; In some embodiments, the deviation value of each measurement position is calculated as follows: ; in, for Deviation value at ; Determine the galvanized pipe deviation sequence based on the deviation value at each measurement position; In some embodiments, the galvanized pipe deviation sequence is a sequence in which the deviation values ​​of each measurement position are arranged in a measurement order, wherein the measurement order can be a forward measurement order or a reverse measurement order.

[0047] The specific method is: ; As an example, assume that the detection mechanism 2 is provided with three displacement sensors 27 and three data sources. The detection mechanism 2 rotates along the galvanized pipe mouth at a constant speed for five times, and the data obtained by the data source is repeated five times. The following is obtained: ; , the test results are shown in Table 1 below.

[0048] Table 1 Data source test results

[0049] Basic weight calculation:

[0050]

[0051]

[0052] Spatial weight calculation: set up The test results are shown in Table 2 below: Table 2 Test results at

[0053]

[0054]

[0055]

[0056] Final weight calculation:

[0057]

[0058]

[0059] Table 3 Data fusion results

[0060] ; get The deviation at the position is 1.1840 mm. By arranging the deviations at various positions, the deviation sequence of the galvanized pipe is obtained.

[0061] S5. Determine the slope of the cutting surface based on the final data of the galvanized pipe; In some embodiments, after the galvanized pipe deviation sequence is determined, the slope of the galvanized pipe cutting surface can be calculated according to the maximum offset value in the galvanized pipe deviation sequence.

[0062] In some embodiments, determining the slope of the cutting surface includes: S501, extracting the maximum deviation value in the galvanized pipe deviation sequence; The specific method is: ; ; It can be understood that after the detection benchmark is determined to obtain the galvanized pipe deviation sequence, there are two groups of maximum deviation values ​​in the sequence, and the two groups of maximum deviation values ​​are located on both sides of the detection benchmark.

[0063] S502: Calculate the slope of the cutting surface based on the maximum deviation value: The specific method is: ; in, is the slope of the cutting surface.

[0064] Finally, it should be noted that the embodiments disclosed in the present invention are only preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for detecting the slope of a cut surface of a galvanized pipe, characterized in that: include: A centering mechanism, a detection mechanism coaxially arranged with the centering mechanism, and a power mechanism connected to the detection mechanism; The centering mechanism includes: a connecting shaft, a connecting sleeve and a movable sleeve provided on the connecting shaft, a first rotating arm and a second rotating arm connected to the connecting sleeve, a third rotating arm connected to the movable sleeve, and a leveling plate connected to the first rotating arm and the second rotating arm respectively, the third rotating arm is also connected to the middle part of the first rotating arm and the second rotating arm; It also includes a pneumatic component, which is used to drive the movable sleeve to slide towards the connecting sleeve after the pneumatic component abuts against the movable sleeve, so that the first rotating arm and the second rotating arm are opened until the leveling plate abuts against the inner wall of the galvanized pipe.

2. A device for detecting the slope of a cut surface of a galvanized pipe according to claim 1, characterized in that: The pneumatic assembly includes: a cylinder, a guide rod and a piston arranged in the cylinder; The cylinder body is provided with a cavity inside, the piston is arranged in the cavity of the cylinder body, and the guide rod is connected to the piston and has both ends passing through the cylinder body; An air injection channel is provided at one end of the guide rod, and an air injection hole is provided in the middle thereof, which is connected to the air injection channel, and the air injection hole is connected to the cavity of the cylinder body; The cavity in the cylinder body located on the side where the piston is connected to the air injection hole is a pressure chamber; the pressure chamber is used to push the entire structure of the piston and the guide rod to move after the air pressure medium is injected.

3. A device for detecting the slope of a cut surface of a galvanized pipe according to claim 2, characterized in that: The connecting shaft is further provided with a connecting channel, and the end of the guide rod away from the flow injection channel is provided in the connecting channel. After the end of the guide rod away from the flow injection channel abuts against the movable sleeve, the movable sleeve is pushed to slide toward the connecting sleeve.

4. A device for detecting the slope of a cut surface of a galvanized pipe according to claim 2, characterized in that: The detection mechanism includes: a first fixed seat, a laminating roller provided on the first fixed seat, a first guide rod and a second guide rod connected to the first fixed seat, a sliding iron core connected to the first guide rod and the second guide rod, a pressure plate connected to the sliding iron core and the laminating roller, and a displacement sensor adapted to the sliding iron core; The first fixing seat is mounted on the pneumatic assembly and is rotatably connected to the pneumatic assembly via a bearing; The laminating roller is used to obtain the deviation of the pipe mouth relative to the vertical cutting surface during the rotation process after it contacts the pipe mouth of the galvanized pipe; The displacement sensor is adapted to the sliding iron core and is used to obtain the displacement of the sliding iron core; The detection mechanism further includes: a second return spring, which is arranged on the second guide rod and has one end in contact with the sliding iron core for limiting the sliding iron core.

5. A device for detecting the slope of a cut surface of a galvanized pipe according to claim 4, characterized in that: The number of the laminating roller, the first guide rod, the second guide rod, the sliding iron core, the pressure plate and the displacement sensor in the detection mechanism is multiple; The detection mechanism further includes: a second fixing seat coaxially arranged with the first fixing seat, the second fixing seat being connected to the first fixing seat via a connecting plate; The power mechanism includes a motor, a driving wheel arranged on the motor, and a driven wheel meshed with the driving wheel, wherein the driven wheel is sleeved on the second fixing seat.

6. A method for detecting the slope of a cut surface of a galvanized pipe, characterized in that: The device for detecting the slope of the cut surface of a galvanized pipe according to any one of claims 1 to 5 comprises the following steps: Determine the testing benchmark; Get galvanized pipe data; Determine the data stability of each data source based on galvanized pipe data; Based on the data stability of each data source, the data of each data source is integrated to determine the final data of the galvanized pipe; Determine the slope of the cutting surface based on the final data of the galvanized pipe.

7. A method for detecting the slope of a cut surface of a galvanized pipe according to claim 6, characterized in that: Determining the data stability of each data source includes: Calculate the stability index based on galvanized pipe data; The stability index is calculated as follows: ； in, Indicates the The detection data matrix of the data source, Indicates the first data in the first cycle; Indicates the first round data, Indicates in The first data of the circle; Indicates in Circle individual data; ； in, ; ； in, For the The stability index of a data source.

8. A method for detecting the slope of a cut surface of a galvanized pipe according to claim 6, characterized in that: The data fused from various data sources includes: Determine the basic weight of each data source based on the stability index of each data source; Determine the adaptive spatial weight of each data source at each measurement location based on the data stability of each data source; Determine a final weight for each data source based on a base weight for each data source and an adaptive spatial weight for each data source at each measurement location; The final data of galvanized pipes is determined based on the final weight of each data source.

9. A method for detecting the slope of a cut surface of a galvanized pipe according to claim 8, characterized in that: The basic weight of the data source is calculated as follows: The basic weight of the data source is calculated as follows: ； in, Indicates the The basic weight of each data source; is the number of data sources; The adaptive spatial weight is calculated as follows: ； in, Indicates the The data source is in Adaptive spatial weighting of measurement locations; The final weight calculation method for each data source is: ； in, Shidi The final weight of each data source, is the empirical coefficient, .

10. A method for detecting the slope of a cut surface of a galvanized pipe according to claim 9, characterized in that: The final data of the galvanized pipe is determined as follows: Determining a bias value for each measurement location based on the final weight of each data source; The calculation method of the deviation value of each measurement position is: ； in, for Deviation value at ; Determine the galvanized pipe deviation sequence based on the deviation value at each measurement position; The specific method is: ; Determining the cutting surface slope includes: Extract the maximum deviation value in the galvanized pipe deviation sequence; The specific method is: ； ； Calculate the slope of the cutting surface based on the maximum deviation value: The specific method is: ； in, is the slope of the cutting surface.

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