A device for detecting the cut surface of galvanized pipe

Abstract

This utility model discloses a galvanized pipe cut surface detection device, belonging to the field of galvanized pipe detection technology. It includes: 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 disposed 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 of the first rotating arm and the second rotating arm. This utility model solves the technical problems of low measurement efficiency and large slope error of the galvanized pipe cut surface, which leads to the inability to guarantee the reliability and installation accuracy of pipe connections. It achieves rapid detection of the slope of the galvanized pipe cut surface while effectively suppressing interference from high noise sources and improving detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of galvanized pipe testing technology, specifically to a device for testing the cut surface of galvanized pipes. Background Technology

[0002] The bevel angle of a galvanized pipe cut refers to the degree to which the cut plane is not perpendicular to the pipe's axis when cutting galvanized steel pipes. Ideally, a perfect cut should have the cut plane completely perpendicular to the pipe's central axis. However, in actual cutting, due to factors such as worn cutting tools, unstable feed, equipment precision issues, improper operation, or insecure pipe fixing, the cut plane may deviate from the vertical direction, forming a bevel. When welding two pipe ends together or connecting them with fittings, an excessive bevel angle can lead to poor contact at the joint surfaces, affecting the strength, sealing, and aesthetics of the connection.

[0003] In existing technologies, the reference edge of a ruler is usually placed against the outer wall of the steel pipe to measure the gap or angle between the vertical edge of the ruler and the cutting plane to obtain the cut surface slope. However, this method of inspection is inefficient and the cut surface slope error of galvanized pipe is relatively large, which makes it impossible to guarantee the reliability of pipe connection and installation accuracy. Utility Model Content

[0004] To solve the above problems, this utility model provides a galvanized pipe cut surface detection device, including: a centering mechanism, a detection mechanism coaxially arranged with the centering mechanism, and a power mechanism connected to the detection mechanism;

[0005] The centering mechanism includes: a connecting shaft, a connecting sleeve and a movable sleeve disposed 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 finding 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.

[0006] It also includes a pneumatic assembly, which, after abutting against the movable sleeve, is used to drive the movable sleeve to slide towards the connecting sleeve, thereby opening the first rotating arm and the second rotating arm until the plate abuts against the inner wall of the galvanized pipe.

[0007] Multiple sets of first and second rotating arms are circumferentially arranged on the connecting shaft.

[0008] In some embodiments, the pneumatic assembly includes: a cylinder, a guide rod disposed in the cylinder, and a piston;

[0009] The cylinder body has an internal cavity, the piston is located in the cavity of the cylinder body, and the guide rod is connected to the piston and extends through the cylinder body at both ends.

[0010] In some embodiments, one end of the guide rod is provided with an air injection channel, and the middle part is provided with an air injection hole that communicates with the air injection channel. The air injection hole is connected to the cavity of the cylinder.

[0011] The cavity in the cylinder located on the side where the piston is connected to the air injection port is a pressure chamber; the pressure chamber is used to push the piston and guide rod to move as a whole after the gas pressure medium is injected.

[0012] In some embodiments, the connecting shaft is further provided with a connecting channel, and the end of the guide rod away from the air injection channel is located in the connecting channel. After the end of the guide rod away from the air injection channel abuts against the movable sleeve, it pushes the movable sleeve to slide towards the connecting sleeve.

[0013] In some embodiments, the detection mechanism includes: a first fixed base, a bonding roller disposed on the first fixed base, a first guide rod and a second guide rod connected to the first fixed base, 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 bonding roller, and a displacement sensor adapted to the sliding iron core.

[0014] In some embodiments, the first fixed seat is sleeved on the pneumatic assembly and rotatably connected to the pneumatic assembly via a bearing;

[0015] The bonding roller, after coming into contact with the galvanized pipe opening, is used to obtain the deviation of the pipe opening relative to the vertical cutting surface during rotation.

[0016] The displacement sensor is adapted to the sliding iron core and is used to obtain the displacement of the sliding iron core.

[0017] The detection mechanism further includes a second reset spring, which is disposed on the second guide rod, with one end abutting against the sliding iron core, and is used to limit the sliding iron core.

[0018] In some embodiments, the number of bonding rollers, first guide rods, second guide rods, sliding iron cores, pressure plates, and displacement sensors in the detection mechanism is multiple sets;

[0019] The detection mechanism further includes: a second fixed seat coaxially arranged with the first fixed seat, the second fixed seat being connected to the first fixed seat via a connecting plate;

[0020] The power mechanism includes a motor, a driving wheel mounted on the motor, and a driven wheel meshing with the driving wheel, the driven wheel being sleeved on a second fixed base.

[0021] By adopting the above technical solution, this utility model mainly has the following technical effects:

[0022] By utilizing a motor to drive the detection mechanism to rotate at a uniform speed via a second fixed seat, the deviation of the pipe opening relative to the vertical cut surface is obtained by measuring the offset of the contact roller when it comes into contact with the galvanized pipe opening. In addition, data from various data sources are fused during the detection process. This solves the technical problems of low measurement efficiency and large error in the slant of the galvanized pipe cut surface, which leads to the inability to guarantee the reliability of pipe connection and installation accuracy. It realizes rapid detection of the slant of the galvanized pipe cut surface, while effectively suppressing interference from high noise sources and improving detection accuracy. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a galvanized pipe cut surface detection device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a galvanized pipe cut surface detection device according to the present invention (from another perspective);

[0025] Figure 3 This is a schematic diagram of the internal structure of a galvanized pipe cut surface detection device according to the present invention;

[0026] Figure 4 This is a schematic diagram of the centering mechanism in a galvanized pipe cutting surface detection device of this utility model;

[0027] Figure 5 This is a schematic diagram of the pneumatic components in a galvanized pipe cutting surface detection device of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of a galvanized pipe cut surface detection device (with some components hidden) according to the present invention;

[0029] Figure 7 This is a schematic diagram of the internal structure of a galvanized pipe cut surface detection device (with some hidden components) according to this utility model.

[0030] The meanings of the reference numerals in the attached figures are as follows:

[0031] 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. Finding plate; 18. Pneumatic assembly; 181. Cylinder; 182. Guide rod; 183. Piston; 184. Injection channel; 185. Injection port; 186. Pressure chamber; 187. Injection pipe;

[0032] 2. Detection mechanism; 21. First fixed seat; 22. Bonding roller; 23. First guide rod; 24. Second guide rod; 25. Sliding iron core; 26. Pressure plate; 27. Displacement sensor; 28. Second return spring; 29. ​​Second fixed seat;

[0033] 3. Power mechanism; 31. Motor; 32. Driving wheel; 33. Driven wheel. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] Please see Figures 1-7 This utility model provides a galvanized pipe cut surface detection device, including: 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 galvanized pipe rotation center axis, that is, the direction common to the center axis, and the radial direction is perpendicular to the axial direction.

[0037] In some embodiments, the centering mechanism 1 is used to align the detection device with the central axis of the galvanized pipe. The centering mechanism 1 includes: a connecting shaft 11, a connecting sleeve 12 and a movable sleeve 13 disposed 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. The third rotating arm 16 is also connected to the middle of the first rotating arm 14 and the second rotating arm 15.

[0038] 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 via 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 allows the third rotating arm 16 to drive the second rotating arm 15 and the first rotating arm 14 to rotate about the connection point with the connecting sleeve 12 when the movable sleeve 13 slides on the connecting shaft 11.

[0039] Furthermore, when the movable sleeve 13 slides towards the connecting sleeve 12, it can drive multiple sets of first rotating arms 14 and second rotating arms 15 to open. By circumferentially arranging multiple sets of first rotating arms 14 and second rotating arms 15 on the connecting shaft 11, and by abutting the plate 17 against the inner wall of the galvanized pipe, and then using the inner wall of the galvanized pipe as a reference, the connecting shaft 11 is aligned with the central axis of the galvanized pipe, so that the detection mechanism 2 can be used to measure the cut surface slope after abutting against the pipe opening of the galvanized pipe.

[0040] In some more preferred embodiments, a first return spring 111 is also sleeved on the connecting shaft 11. The two ends of the first return spring 111 abut against the connecting sleeve 12 and the movable sleeve 13 respectively, so that before or after the galvanized pipe cutting surface slope measurement, the movable sleeve 13 is driven to slide away from the connecting sleeve 12, and multiple sets of first rotating arms 14 and second rotating arms 15 are driven to retract and reset.

[0041] 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 matches the sliding key 131. The sliding process of the movable sleeve 13 on the connecting shaft 11 is realized by the sliding key 131 sliding in the sliding groove 112.

[0042] In some embodiments, the centering mechanism 1 further includes a pneumatic assembly 18, which, after abutting against the movable sleeve 13, drives the movable sleeve 13 to slide towards 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. Further, the pneumatic assembly 18 includes: a cylinder 181, a guide rod 182 disposed in the cylinder 181, and a piston 183. In some embodiments, the cylinder 181 is a container for forming a sealed pressure chamber, with an internal cavity. The piston 183 is disposed in the cavity of the cylinder 181, and the guide rod 182 is connected to the piston 183 and extends through the cylinder 181 at both ends.

[0043] Furthermore, one end of the guide rod 182 is provided with an injection channel 184, and the middle part is provided with an injection hole 185 communicating with the injection channel 184. The injection hole 185 is connected to the cavity of the cylinder 181. In the cylinder 181, the cavity located on the side where the piston 183 is connected to the injection hole 185 is a pressure chamber 186. By providing the pressure chamber 186, after the operator injects the gas pressure medium into the pressure chamber 186 through the injection channel 184 and the injection hole 185 in sequence, the operator can push the overall structure of the piston 183 and the guide rod 182 to move in the direction of increasing 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 the gas pressure medium into the pressure chamber 186 through the injection channel 184 and the injection hole 185.

[0044] In some embodiments, the connecting shaft 11 is further provided with a connecting channel 113, and one end of the guide rod 182 away from the air injection channel 184 is provided in the connecting channel 113. After the end of the guide rod 182 away from the air injection channel 184 abuts against the movable sleeve 13, the movable sleeve 13 is pushed to slide towards the connecting sleeve 12 until it abuts against the connecting sleeve 12, and then the movable sleeve 13 is pushed to slide towards the connecting sleeve 12.

[0045] In some embodiments, the detection mechanism 2 is a part used to detect the camber of the cut surface of the galvanized pipe. The detection mechanism 2 includes: a first fixed base 21, a bonding roller 22 disposed on the first fixed base 21, a first guide rod 23 and a second guide rod 24 connected to the first fixed base 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.

[0046] In some embodiments, the first fixing seat 21 is a ring structure. The first fixing seat 21 is sleeved on the pneumatic component 18 and rotatably connected to the pneumatic component 18 via a bearing. In some embodiments, after the first fixing seat 21 and the pneumatic component 18 are coaxially arranged, the center axis of the ring-shaped first fixing seat 21 can be aligned with the center axis of the galvanized pipe after the centering mechanism 1 is aligned with the center axis of the galvanized pipe.

[0047] Furthermore, the bonding roller 22 is circumferentially disposed on the first fixed seat 21, and one end of the bonding roller 22 is hinged to the first fixed seat 21. The above design allows the bonding roller 22 to roll along the galvanized pipe opening when the first fixed seat 21 rotates after the bonding roller 22 comes into contact with the galvanized pipe opening.

[0048] 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.

[0049] In some embodiments, after the bonding roller 22 comes into contact with the galvanized pipe opening, it is used to obtain the deviation of the pipe opening relative to the vertical cutting surface during rotation. Further, when the bonding roller 22 is in contact with the pipe opening, if there is a deviation of the pipe opening relative to the vertical cutting surface when the bonding roller 22 rotates along the pipe opening, the bonding roller 22 will deflect about the hinge point with the first fixed seat 21 as the axis. This deflection will drive the sliding iron core 25 to slide on the first guide rod 23 and the second guide rod 24 via the pressure plate 26. That is, the deflection of the bonding 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 opening relative to the vertical cutting surface can be obtained by the deflection of the bonding roller 22. Finally, the cut surface slope can be calculated by the deviation of the pipe opening relative to the vertical cutting surface.

[0050] In some embodiments, the displacement sensor 27 is adapted to the sliding iron core 25 to obtain the displacement of the sliding iron core 25.

[0051] Furthermore, the number of bonding rollers 22, first guide rods 23, second guide rods 24, sliding iron cores 25, pressure plates 26, and displacement sensors 27 in the detection mechanism 2 is multiple. The displacement of the sliding iron core 25 is obtained by multiple displacement sensors 27 respectively. By processing the data, the measurement accuracy can be effectively improved.

[0052] In some more preferred embodiments, the detection mechanism 2 further includes a second reset spring 28, which is disposed on the second guide rod 24, with one end abutting against the sliding iron core 25, for limiting the sliding iron core 25, thereby limiting the rotation of the bonding roller 22, so that the deflection of the bonding roller 22 can be fed back to the sliding iron core 25 in a timely manner via the pressure plate 26.

[0053] Furthermore, the detection mechanism 2 also includes a second fixed seat 29 coaxially arranged with the first fixed seat 21. The second fixed seat 29 is also a circular structure and is connected to the first fixed seat 21 via a connecting plate.

[0054] 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 disposed 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 a gear structure that meshes with each other. 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, thereby utilizing the operation of the motor 31. The detection mechanism 2 is driven to rotate at a uniform speed through the second fixed seat 29. The deviation of the pipe opening relative to the vertical cutting surface is obtained by the offset of the bonding roller 22 when it comes into contact with the pipe opening.

[0055] Finally, it should be noted that the embodiments disclosed in this utility model are merely preferred embodiments of this utility model and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A device for detecting the cut surface of galvanized pipes, 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 disposed 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 finding 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 assembly, which, after abutting against the movable sleeve, is used to drive the movable sleeve to slide towards the connecting sleeve, thereby opening the first rotating arm and the second rotating arm until the plate abuts against the inner wall of the galvanized pipe. Multiple sets of first and second rotating arms are circumferentially arranged on the connecting shaft.

2. The galvanized pipe cut surface detection device according to claim 1, characterized in that, The pneumatic assembly includes: a cylinder, a guide rod and a piston disposed in the cylinder; The cylinder body has an internal cavity, the piston is located in the cavity of the cylinder body, and the guide rod is connected to the piston and extends through the cylinder body at both ends.

3. The galvanized pipe cut surface detection device according to claim 2, characterized in that, One end of the guide rod is provided with an air injection channel, and the middle part is provided with an air injection hole that communicates with the air injection channel. The air injection hole is connected to the cavity of the cylinder. The cavity in the cylinder located on the side where the piston is connected to the air injection port is a pressure chamber; the pressure chamber is used to push the piston and guide rod to move as a whole after the gas pressure medium is injected.

4. The galvanized pipe cut surface detection device according to claim 3, characterized in that, The connecting shaft is also provided with a connecting channel. The end of the guide rod away from the air injection channel is located in the connecting channel. After the end of the guide rod away from the air injection channel abuts against the movable sleeve, it pushes the movable sleeve to slide towards the connecting sleeve.

5. The galvanized pipe cut surface detection device according to claim 3, characterized in that, The detection mechanism includes: a first fixed base, a bonding roller disposed on the first fixed base, a first guide rod and a second guide rod connected to the first fixed base, 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 bonding roller, and a displacement sensor adapted to the sliding iron core.

6. The galvanized pipe cut surface detection device according to claim 5, characterized in that, The first fixed seat is sleeved on the pneumatic component and rotatably connected to the pneumatic component via a bearing; The bonding roller, after coming into contact with the galvanized pipe opening, is used to obtain the deviation of the pipe opening relative to the vertical cutting surface during rotation. 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 reset spring, which is disposed on the second guide rod, with one end abutting against the sliding iron core, and is used to limit the sliding iron core.

7. The galvanized pipe cut surface detection device according to claim 6, characterized in that, The detection mechanism comprises multiple sets of bonding rollers, first guide rods, second guide rods, sliding iron cores, pressure plates, and displacement sensors. The detection mechanism further includes: a second fixed seat coaxially arranged with the first fixed seat, the second fixed seat being connected to the first fixed seat via a connecting plate; The power mechanism includes a motor, a driving wheel mounted on the motor, and a driven wheel meshing with the driving wheel, the driven wheel being sleeved on a second fixed base.

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