Multi-dimensional measuring device for a lifting column

Abstract

The application discloses a kind of multi-dimensional measuring devices for lifting column, belong to lifting column measurement technical field, including longitudinal workbench, the surface below of longitudinal workbench is equipped with moving platform, electric chuck is equipped on the moving platform, the electric chuck is used to clamp lifting column, the surface of longitudinal workbench is equipped with lifting stroke measuring mechanism and lifting perpendicularity measuring mechanism, and the lifting perpendicularity measuring mechanism is located between electric chuck and lifting stroke measuring mechanism.The application can quickly complete the measurement of lifting stroke and perpendicularity of lifting column.

Description

Technical Field

[0001] This invention belongs to the field of rising bollard technology, specifically relating to a multi-dimensional measuring device for rising bollards. Background Technology

[0002] Rising bollards, also known as retractable bollards, rising road posts, anti-collision bollards, hydraulic rising bollards, etc., are widely used in urban traffic, pedestrian streets, highway toll stations, airports, schools, banks, large clubs, parking lots, and many other places. By restricting the passage of vehicles, they effectively ensure traffic order and the safety of key facilities and locations. To verify whether rising bollards are qualified products, random sampling and testing are required.

[0003] Chinese Patent Application No. 2023108946364 discloses a parking lot bollard lifting detection device, including a support assembly, a rotating assembly, a height measuring assembly, a verticality detection assembly, and a center positioning assembly. The support assembly includes a support plate, a support rod, and a connecting plate. The top of the support rod is fixedly distributed at the edge of the support plate, and the connecting plate is fixed to the bottom of the support rod. The rotating assembly is rotatably mounted on the support plate and includes a rotating cylinder. The rotating cylinder is a hollow cylindrical structure with an open bottom and is rotatably disposed through the center of the support plate. The verticality detection assembly is fixed to the bottom outer side of the rotating cylinder. The height measuring assembly is slidably disposed on the top of the rotating cylinder and passes through the bottom end of the rotating cylinder. The center positioning assembly is fixed to the bottom end of the height measuring assembly and passes through the bottom opening of the rotating cylinder.

[0004] In the above scheme, a contact rod contacts the side wall of the lifting column, and the operator manually pushes the rotating component to rotate it one revolution around the column, thereby determining the verticality of the lifting column by reading a dial indicator. Simultaneously, the lifting height is read from the scale line through the relative sliding of the marking tube and the adjusting rod. However, this technology has several shortcomings. First, its height measurement structure relies on manual reading of the scale tube, which is a mechanical measurement method. The reading depends on the operator's visual judgment, making it difficult to obtain continuous, real-time, and high-precision displacement data, and failing to meet the requirements of modern data recording and automated detection. Second, its verticality measurement method relies on a single contact rod and a dial indicator, and requires manual rotation of the component for detection. This is greatly affected by the operator's operating speed, force, and rotational stability, resulting in poor measurement repeatability and reliability. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a multi-dimensional measuring device for lifting columns, comprising a longitudinal worktable, a movable platform below the surface of the longitudinal worktable, an electric clamp on the movable platform for clamping the lifting column, a lifting stroke measuring mechanism and a lifting verticality measuring mechanism above the surface of the longitudinal worktable, the lifting verticality measuring mechanism being located between the electric clamp and the lifting stroke measuring mechanism, the lifting stroke measuring mechanism including a stroke measuring seat, a longitudinal measuring probe and a displacement sensor for monitoring the longitudinal displacement of the longitudinal measuring probe being slidably disposed within the stroke measuring seat, the longitudinal measuring probe extending downward through the stroke measuring seat, the lifting verticality measuring mechanism including a measuring ring seat, a plurality of detection bases surrounding the measuring ring seat, a transverse measuring probe being slidably disposed on the side of the detection base facing the center of the measuring ring seat, a support plate connected to one end of the transverse measuring probe away from the detection base, a roller bracket on the support plate, a roller rotatably disposed on the roller bracket, and a pressure sensor disposed between the other end of the transverse measuring probe and the inner side of the detection base.

[0006] Preferably, the measuring ring seat includes a movable ring seat and a fixed ring seat. The fixed ring seat has an arc-shaped slide rail on its surface, and the bottom of the movable ring seat has a matching slide groove. The movable ring seat is rotatably positioned above the fixed ring seat via the arc-shaped slide rail and the slide groove. The fixed ring seat has a mounting plate on its side, and the corresponding side of the movable ring seat has a protruding plate. An electric telescopic rod is hinged to the mounting plate, and the output end of the electric telescopic rod is hinged to the protruding plate. The detection base is disposed on the movable ring seat, and the electric telescopic rod pushes the movable ring seat to rotate.

[0007] Preferably, a small stepper motor is provided on the side of the bracket plate facing the detection base. The output end of the small stepper motor passes through the bracket plate and is connected to the roller bracket. The small stepper motor drives the roller bracket to rotate.

[0008] Preferably, the verticality measuring mechanism is provided with a lifting speed measuring mechanism, which includes a magnetic bead embedded in the roller and a Hall switch fixed to the roller bracket.

[0009] Preferably, the roller has a spherical structure, the roller bracket has a spherical groove, the roller is slidably fitted into the spherical groove, the inner side of the spherical groove has an annular groove, and a roller is slidably mounted in the annular groove, the roller being slidably connected to the roller.

[0010] Preferably, an elastic reset element is provided between the transverse measuring probe and the pressure sensor. The elastic reset element is used to push the transverse measuring probe outward so that the roller automatically fits the surface of the lifting column of different diameters.

[0011] Preferably, a disc is provided below the longitudinal measuring probe, a ball-and-socket structure is provided above the disc, and a ball head is provided at the bottom of the longitudinal measuring probe, the ball head being slidably fitted into the ball-and-socket structure.

[0012] Preferably, the ball head includes an upper cover and a lower ball, which are screwed together. A return spring is provided in the middle of the disc, which passes through the lower ball and abuts against the upper cover. A magnetic ring is provided at the bottom of the disc.

[0013] Preferably, the travel measuring seat has guide rods located on both sides of the longitudinal measuring probe inside, and a sliding seat is connected to the top of the longitudinal measuring probe. The two sides of the sliding seat are slidably connected to the guide rods. The displacement sensor includes a magnetic component located at the top of the longitudinal measuring probe and a Hall array located longitudinally on the inner surface of the travel measuring seat.

[0014] Preferably, the surface of the roller is provided with a polyurethane thin layer, the thickness of which is 0.5–1.0 mm.

[0015] The advantages of this invention are:

[0016] 1. This solution integrates lifting stroke measurement, lifting verticality measurement, and lifting speed measurement into one system. All three data points are obtained simultaneously within the same equipment and process, avoiding the traditional method of requiring multiple devices for separate testing. This improves testing efficiency and ensures more accurate data correlation. The overall structure enables multi-dimensional detection of the lifting bollard's operating status, resulting in more comprehensive and reliable test results. This structure requires no manual rotation or reading, automatically adapts to lifting bollards of different diameters, and offers high measurement accuracy and stability.

[0017] 2. The lifting stroke measuring device in this solution uses an automatic leveling structure with a ball head and ball socket, as well as an adaptive disc, to effectively avoid problems such as probe skew, jamming, or unstable contact, thereby significantly improving the stability and accuracy of the measurement process.

[0018] 3. The elastic reset component in this solution can automatically provide a rebound force when the transverse measuring probe deviates due to contact with lifting columns of different diameters, ensuring that the probe always adheres to the surface of the lifting column. This enables adaptive measurement of lifting columns of different sizes, ensuring continuous and stable contact of the roller throughout the measurement process and improving the accuracy of verticality measurement.

[0019] 4. In this solution, the fixed ring seat and the rotatable movable ring seat are combined to enable the movable ring seat to rotate smoothly around the circumference of the lifting column under the push of the electric telescopic rod. This drives the detection base on the movable ring seat to move synchronously around the lifting column, thereby realizing continuous measurement of the side wall of the lifting column from multiple angles and directions, effectively improving the measurement range and the integrity of the detection.

[0020] 5. This design employs a spherical roller combined with a spherical groove and annular groove structure, enabling the roller to rotate adaptively in multiple directions and forming a low-friction transmission through the rollers. When the roller moves longitudinally or rotates around the lifting column for measurement, it can always maintain stable contact and smooth rolling, significantly reducing frictional resistance, thereby improving the continuity, stability, and accuracy of the sidewall data in the measurement process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a side view of the structure of the present invention.

[0023] Figure 3 This is a structural diagram of the lifting stroke measuring mechanism of the present invention.

[0024] Figure 4 This is a structural diagram of the upper part of the longitudinal measuring probe of the present invention.

[0025] Figure 5 This is a structural diagram of the lower part of the longitudinal measuring probe of the present invention.

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the disc of the present invention.

[0027] Figure 7 This is a structural diagram of the verticality measuring mechanism of the present invention.

[0028] Figure 8 This is a top view of the verticality measuring mechanism of the present invention.

[0029] Figure 9 This is a cross-sectional structural diagram of the verticality measuring mechanism of the present invention.

[0030] Figure 10 This is a diagram of the roller bracket flipping structure of the present invention.

[0031] Figure 11 The diagram shows the roller bracket and roller structure in Embodiments 1 and 2 of the present invention.

[0032] Figure 12 This is a diagram of the internal structure of the testing base of the present invention.

[0033] Figure 13 This is a structural diagram of the elastic reset component of the present invention, which is a magnetic pole block.

[0034] Figure 14 This is a structural diagram of the roller bracket and roller in Embodiment 3 of the present invention.

[0035] In the diagram: 1. Longitudinal worktable; 2. Moving platform; 3. Electric chuck; 4. Lifting stroke measuring mechanism; 5. Lifting verticality measuring mechanism; 6. Stroke measuring seat; 7. Longitudinal measuring probe; 8. Measuring ring seat; 9. Detection base; 10. Lateral measuring probe; 11. Support plate; 12. Roller support; 13. Roller; 14. Pressure sensor; 15. Moving ring seat; 16. Fixed ring seat; 17. Arc-shaped slide rail; 18. Slide groove; 19. Mounting plate; 20. Protruding plate; 21. Electric telescopic rod; 22. Small stepper motor; 23. Magnetic... 24. Ball, Hall switch, 25. Spherical groove, 26. Annular groove, 27. Roller, 28. Disc, 29. Ball socket structure, 30. Ball head, 31. Upper cover, 32. Lower ball, 33. Return spring, 34. Magnetic ring, 35. Guide rod, 36. Sliding seat, 37. Magnetic component, 38. Hall array, 39. Polyurethane thin layer, 40. Horizontal slide rail plate, 41. Longitudinal slide rail plate, 42. Horizontal telescopic cylinder, 43. Longitudinal telescopic cylinder, 44. Spring, 45. Magnetic pole block, 46. Connecting part, 47. Fixed seat, 48. Fixed plate. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0037] Example 1, as Figure 1 and Figure 2 As shown, a multi-dimensional measuring device for a lifting column includes a longitudinal worktable 1, a movable platform 2 below the longitudinal worktable 1, and a lifting stroke measuring mechanism 4 and a lifting verticality measuring mechanism 5 above the surface of the longitudinal worktable 1. An electric clamping plate 3 for clamping the lifting column is installed on the movable platform 2 for measurement after the lifting column is raised. The movable platform 2 is used for adjusting the position of the lifting column and includes a transverse slide rail 40, a longitudinal slide rail 41, a transverse telescopic cylinder 42, and a longitudinal telescopic cylinder 43. The transverse slide rail 40 is fixedly installed below the surface of the longitudinal worktable 1, and the longitudinal slide rail 41 can slide laterally along the transverse slide rail 40. One side of the electric clamping plate 3 is slidably mounted on the longitudinal slide rail 41 via a sliding plate. The transverse telescopic cylinder 42 is installed on the longitudinal worktable 1, and its output end is connected to the longitudinal slide rail 41 to drive the longitudinal slide rail 41 to move laterally. The electric clamp 3 is equipped with a longitudinal telescopic cylinder 43, with its output end facing downwards. By extending downwards to press against the ground, the electric clamp 3 is raised as a whole, thereby adjusting the initial height of the lifting column. The longitudinal slide rail 41 and the transverse slide rail 40 both adopt an inverted trapezoidal or "T"-shaped limiting structure to form a guiding and coordinating relationship for upper and lower clamping, thereby preventing the longitudinal slide rail 41 from disengaging from the slide rail during movement and improving the overall stability and reliability of the movement.

[0038] The lifting stroke measuring mechanism 4 includes a stroke measuring seat 6. A fixed seat 47 is fixed on the longitudinal worktable 1, and a fixed plate 48 is connected to the fixed seat 47. The stroke measuring seat 6 is fixed to the fixed plate 48. Connecting beams are provided on both sides of the fixed seat 47, and screws are fixed on the connecting beams. The screws pass through the fixed plate 48. The stability can be further improved by locking nuts on both sides of the screws on the fixed plate 48. A longitudinal measuring probe 7 and a displacement sensor for monitoring the longitudinal displacement of the longitudinal measuring probe 7 are slidably provided inside the stroke measuring seat 6. The longitudinal measuring probe 7 extends downward through the stroke measuring seat 6 to abut against the top of the lifting column. When the lifting column is raised, the longitudinal measuring probe 7 is also raised. The displacement sensor records and transmits the lifting distance of the longitudinal measuring probe 7, thereby measuring the lifting stroke of the lifting column.

[0039] Combination Figure 3 and Figure 4 Inside the stroke measuring base 6, guide rods 35 are respectively provided on the left and right sides of the longitudinal measuring probe 7, forming a double-sided guiding structure for the longitudinal measuring probe 7. A sliding seat 36 is fixedly connected to the top of the longitudinal measuring probe 7. The two sides of the sliding seat 36 are respectively slidably engaged with the corresponding guide rods 35, thereby providing stable limiting and precise guidance for the longitudinal measuring probe 7 during the measurement process, effectively preventing the longitudinal measuring probe 7 from deflecting, shaking, or jamming during its up and down movement, and improving the repeatability and accuracy of displacement detection. The displacement sensor consists of a magnetic component 37 set on the top of the longitudinal measuring probe 7 and a Hall array 38 arranged longitudinally along the inner wall of the stroke measuring base 6. The Hall array 38 is composed of multiple Hall sensors arranged longitudinally. The magnetic component 37 moves within the sensing area of ​​the Hall array 38 as the longitudinal measuring probe 7 moves. The Hall array 38 obtains real-time displacement data of the longitudinal measuring probe 7 by detecting changes in magnetic field strength. By combining magnetic component 37 with Hall array 38, non-contact measurement is achieved, avoiding the wear problem of traditional mechanical stroke detection mechanisms. At the same time, it can cover a large measurement range, ensuring measurement accuracy and stability throughout the entire stroke range of the lifting column.

[0040] Combination Figure 5 and Figure 6When a defective product is found in the lifting column, and its top has a slight tilt, the lifting column, after being raised, will cause a lateral force to be generated on the longitudinal measuring probe 7, which is in contact with it. This can lead to the longitudinal measuring probe 7 tilting or getting stuck, resulting in fluctuating readings or system misjudgments. To address this, in this embodiment, a disc 28 is provided below the longitudinal measuring probe 7, a ball-and-socket structure 29 is provided above the disc 28, and a ball head 30 is provided at the bottom of the longitudinal measuring probe 7. The ball head 30 is slidably fitted into the ball-and-socket structure 29, and the ball head 30 and the ball-and-socket structure 29 have a sliding fit. When the top of the lifting column is slightly tilted, the bottom surface of the disc 28 can be automatically flush with the top surface of the lifting column through a slight adjustment of the ball head 30 within the ball-and-socket structure 29, while the axis of the longitudinal measuring probe 7 remains vertical. This ensures that the force direction of the probe is perpendicular, and the top of the lifting column will not generate a lateral force on the longitudinal measuring probe 7, avoiding measurement errors or unstable readings caused by contact angle deviations.

[0041] A magnetic ring 34 is provided at the bottom of the disc 28 to provide auxiliary adsorption force when in contact with the carbon steel lifting column, so that the disc 28 can maintain a stable and close fit during the measurement process, preventing instantaneous detachment due to slight shaking or vibration on the surface of the lifting column, thereby improving the reliability of the measurement and the stability of the response of the longitudinal measuring probe 7.

[0042] The ball head 30 consists of an upper cover 31 and a lower ball part 32, which are connected by a threaded structure for easy assembly, disassembly, and maintenance. A return spring 33 is located in the middle of the disc 28, extending upwards through the lower ball part 32 and abutting against the bottom surface of the upper cover 31. When the disc 28 is tilted due to the top of the lifting column, the return spring 33 can promptly restore the ball head 30 and disc 28 to their initial positions after the external force is released, ensuring that the longitudinal measuring probe 7 and disc 28 are always in the correct posture before the next measurement, thereby improving measurement repeatability and overall reliability. The bottom of the disc 28 is machined into a flat structure, allowing it to form a large-area fit when in contact with the upper surface of the lifting column, resulting in a more uniform force distribution. Compared with traditional point-contact measuring ends, flat fit effectively reduces measurement errors caused by local indentations, point pressure offsets, etc., while improving the stability of the disc 28 during measurement and ensuring more accurate displacement transmission of the longitudinal measuring probe 7.

[0043] Before measuring the stroke of the lifting column, the column to be measured is first placed on the electric clamp 3 on the moving platform 2. The electric clamp 3 clamps and fixes the lifting column, keeping it stably positioned during the measurement process. Then, the moving platform 2 is used to precisely adjust the horizontal position of the lifting column, ensuring its upper surface is accurately aligned with the disc 28 below the stroke measuring seat 6. After alignment, it is checked whether the top of the lifting column is in contact with the disc 28. If not, the longitudinal telescopic cylinder 43 on the electric clamp 3 is activated, causing its output end to extend downwards and press against the ground. This extension of the output end raises the electric clamp 3, causing the lifting column to rise until its top is in contact with the disc 28. When the stroke measurement of the lifting column begins, the column is raised. This upward movement of the lifting column synchronously pushes the longitudinal measuring probe 7 upwards. As the longitudinal measuring probe 7 moves upwards with the lifting column, the magnetic component 37 at its top moves synchronously along the Hall array 38 arranged on the inner wall of the stroke measuring seat 6. The Hall array 38 senses changes in magnetic field strength in real time and converts them into corresponding displacement signals, which are then calculated by the control module. This allows for precise determination of the actual lifting distance of the column, achieving non-contact, high-precision detection of the lifting stroke. Upon completion of the measurement, the longitudinal telescopic cylinder 43 stops operating, causing the electric clamping plate 3 to descend and reset, returning the column to its initial height. The reset spring 33 simultaneously restores the disc 28 and ball head 30 to their initial positions before measurement, preparing for the next measurement. The entire measurement process is highly automated, repeatable, and yields stable and reliable results.

[0044] Combination Figure 7 and Figure 8 The verticality measuring mechanism 5 is located between the electric clamp 3 and the lifting stroke measuring mechanism 4, and is used to detect the verticality of the lifting column in real time during the lifting process. The verticality measuring mechanism 5 includes a measuring ring seat 8, which is fixed on the longitudinal worktable 1. Several detection bases 9 are evenly distributed around the periphery of the measuring ring seat 8 for mounting transverse measuring probes 10. Two transverse measuring probes 10 are slidably mounted on the inner side of each detection base 9 towards the center of the measuring ring seat 8. The ends of the two transverse measuring probes 10 furthest from the detection base 9 are connected to a support plate 11. A roller bracket 12 is mounted on the support plate 11. Figure 11 As shown, in this embodiment, the roller bracket 12 has a U-shaped structure, and a roller 13 is mounted on the roller bracket 12. In this embodiment, the roller 13 has a conventional wheel structure, and the two sides of the roller 13 are rotatably mounted on the roller bracket 12 via a rotating shaft. A pressure sensor 14 is provided between the other end of the transverse measuring probe 10 and the inner side of the detection base 9. The pressure sensor 14 is fixed to the inner side of the detection base 9 and is used to detect the force value generated by the contact between the transverse measuring probe 10 and the surface of the lifting column in real time.

[0045] Combination Figure 12 and Figure 13 An elastic reset element is provided between the lateral measuring probe 10 and the pressure sensor 14. This elastic reset element provides automatic rebound or pushing force when the side wall of the lifting column contacts the lateral measuring probe 10 and causes displacement, ensuring that the lateral measuring probe 10 remains in close contact with the surface of the lifting column. Through this elastic reset action, the roller 13 can adapt to lifting columns of different diameters, ensuring that the lateral measuring probe 10 remains in contact with the column body throughout the measurement process, thereby achieving accuracy and stability in verticality measurement.

[0046] In practical implementation, the elastic reset component can adopt a traditional spring structure, such as... Figure 12 As shown, the elastic force of spring 44 pushes the transverse measuring probe 10 outward. A magnetic repulsion structure can also be used, such as... Figure 13 As shown, two magnetic pole blocks 45 with repulsive polarity are set up to push and reset the transverse measuring probe 10 outward through magnetic force. Regardless of the scheme used, the elastic reset component can automatically adjust the position of the transverse measuring probe 10 when the diameter of the lifting column changes, achieving continuous contact between the measuring end and the surface being measured, avoiding errors caused by poor contact during measurement. It can also adapt to lifting columns of different diameters, increasing the detection range. A connecting part 46 is provided at the end of the transverse measuring probe 10 facing the elastic reset component. Its diameter is larger than the diameter of the transverse measuring probe 10, used to connect with the elastic reset component and also serving as a limit to prevent the transverse measuring probe 10 from falling out of the detection base 9 when it extends outward.

[0047] During the measurement process, as the lifting column rises, its sidewall pushes the transverse measuring probe 10, causing the roller 13 to contact the sidewall of the lifting column and roll along its surface. Simultaneously, the pressure sensor 14 collects real-time information on changes in contact force. For example, if the pressure on one side increases while the pressure on the other side decreases, it can be determined that the lifting column is tilted in that direction. Combining the pressure distribution of multiple probes, the offset angle of the top of the lifting column relative to the vertical direction can be calculated. The number of detection bases 9 can be multiple; in this embodiment, four are used, spaced 90° apart. The four bases are evenly distributed, allowing simultaneous measurement in four directions of the lifting column, avoiding the possibility of overlooking tilt conditions when only measuring one side.

[0048] During the testing process, such as Figure 8 As shown, the rolling axis of roller 13 should be aligned with the tangent direction of the lifting column surface perpendicular to the contact surface, so that roller 13 can roll smoothly without lateral slippage. In this embodiment, roller 13 in this state is defined as longitudinal. This structure can ensure smooth sliding of the lateral measuring probe 10 and convert the lateral offset into a precise pressure signal, which is convenient for calculating the verticality deviation of the lifting column. At the same time, the setting of roller 13 effectively reduces the frictional resistance between the lateral measuring probe 10 and the surface of the lifting column, ensuring a smooth and stable measurement process and improving the accuracy and repeatability of verticality measurement.

[0049] Combination Figure 11 In this embodiment, the verticality measuring mechanism 5 is further equipped with a lifting speed measuring mechanism for real-time monitoring of the lifting column's upward speed. The lifting speed measuring mechanism includes a magnetic bead 23 embedded in the roller 13 and a Hall switch 24 fixedly mounted on the roller bracket 12. The Hall switch 24 is an electronic sensor element based on the Hall effect. It can detect the presence or change of a magnetic field and output an electrical signal. When the roller 13 rolls along the surface of the lifting column with the transverse measuring probe 10, the roller 13 drives the magnetic bead 23 to rotate through the sensing area of ​​the Hall switch 24. The Hall switch 24 converts the rotational speed into the actual lifting speed signal of the lifting column by detecting the pulse frequency of the magnetic bead 23. This structure achieves non-contact measurement of the lifting speed, accurately and in real-time reflecting the movement state of the lifting column. Simultaneously, the combination of the magnetic bead 23 and the Hall switch 24 is simple and reliable, unaffected by mechanical wear, and has high measurement accuracy, making it suitable for long-term continuous measurement.

[0050] This embodiment organically combines the electric clamp 3, the lifting stroke measuring mechanism 4, the lifting verticality measuring mechanism 5, and the lifting speed measuring mechanism to form a multi-dimensional, automated lifting column detection device. This device can simultaneously achieve high-precision measurements of stroke, verticality, and lifting speed during the lifting process of the column, significantly improving measurement efficiency and data accuracy.

[0051] Example 2 has the same parts as Example 1, the difference being that the measuring ring seat 8 in this example includes a fixed ring seat 16 and a movable ring seat 15. (Combined with...) Figures 7-9The fixed ring seat 16 is fixedly connected to the longitudinal worktable 1. The surface of the fixed ring seat 16 is provided with an arc-shaped slide rail 17, and the bottom of the movable ring seat 15 is provided with a slide groove 18 that matches the arc-shaped slide rail 17, so that the movable ring seat 15 can rotate smoothly along the arc-shaped trajectory on the fixed ring seat 16. The side of the fixed ring seat 16 is provided with a mounting plate 19, and the corresponding side of the movable ring seat 15 is provided with a protruding plate 20. The electric telescopic rod 21 is connected to the mounting plate 19 of the fixed ring seat 16 by a hinge. The output end of the electric telescopic rod 21 is also hinged to the protruding plate 20 of the movable ring seat 15. The output end of the electric telescopic rod 21 is used to push the movable ring seat 15 to rotate along the arc-shaped trajectory. To ensure that the extension of the electric telescopic rod 21 does not interfere with the circumference of the moving ring seat 15, a higher support shaft is hinged to the tail end of the electric telescopic rod 21 on the mounting plate 19. The output end of the electric telescopic rod 21 is hinged to the protruding plate 20 via an L-shaped plate, so that the entire electric telescopic rod 21 is positioned above the moving ring seat 15, thus enabling it to smoothly push the moving ring seat 15 to rotate at a certain angle. The overall height of the electric telescopic rod 21 can also be set higher, such as exceeding the height of the detection base 9, so that the electric telescopic rod 21 can push the moving ring seat 15 to rotate without colliding with the adjacent detection base 9, allowing the moving ring seat 15 to rotate at a larger angle.

[0052] Four detection bases 9 are spaced apart on the movable ring seat 15. A transverse measuring probe 10 is fixed to each detection base 9, allowing it to slide and measure along the side of the lifting column. When the lifting column stops moving, it pushes the movable ring seat 15 to rotate along an arc-shaped trajectory, causing the detection bases 9 and the transverse measuring probe 10 on the movable ring seat 15 to move synchronously around the circumference of the lifting column. The rotation of the movable ring seat 15 and the electric telescopic rod 21 applies pressure to the transverse measuring probe 10 along the side of the lifting column, achieving continuous detection of the lifting column's sidewall and obtaining more comprehensive and accurate verticality measurement data. The rotation angle of the movable ring seat 15 can be set according to requirements; the more detection bases 9 there are, the smaller the rotation angle can be. In this embodiment, four detection bases 9 are used, so the movable ring seat 15 only needs to rotate a maximum of 90°.

[0053] To avoid excessive friction when the longitudinal roller 13 moves around the lifting column, a small stepper motor 22 is provided on the side of the support plate 11 facing the detection base 9. The output end of the small stepper motor 22 passes through the support plate 11 and is connected to the roller bracket 12, driving the roller bracket 12 to rotate. When it is necessary for the roller 13 to rotate around the side wall of the lifting column, such as... Figure 10As shown, a small stepper motor 22 drives the roller bracket 12 to rotate 90°, making the rolling direction of the roller 13 tangential to the side wall of the lifting column. In this embodiment, the state of the roller 13 at this time is defined as lateral, thereby ensuring that the roller 13 can smoothly roll along the side of the lifting column and drive the lateral measuring rod to slide, realizing a complete measurement of the side wall of the lifting column. The precise control of the small stepper motor 22 enables the roller bracket 12 to rotate into position according to the set angle. The detection base 9 is provided with a groove to accommodate the small stepper motor 22, so as to avoid the small stepper motor 22 affecting the contraction of the bracket plate 11, thereby affecting the pressure transmission.

[0054] In this embodiment, the moving ring seat 15 rotates along an arc-shaped trajectory, causing the detection base 9 and the transverse measuring probe 10 to move around the side wall of the lifting column, thereby achieving continuous detection of the circumferential surface of the lifting column. Compared with embodiment 1, which can only measure a fixed direction, this embodiment can obtain more complete verticality information of the side wall of the lifting column, improving the comprehensiveness and accuracy of the measurement data.

[0055] Example 3, combined with Figure 14 This embodiment is a variation of Embodiment 2. In this embodiment, the roller 13 has a spherical structure, and a spherical groove 25 is formed on the roller support 12. The roller 13 is slidably fitted into the spherical groove 25, thereby enabling the roller 13 to achieve multi-directional adaptive rotation within the spherical groove 25. An annular groove 26 is further formed on the inner side of the spherical groove 25, and a slidable roller 27 is provided in the annular groove 26. The roller 27 is slidably connected to the roller 13, thereby forming a low-friction rolling transmission structure between the roller 13 and the roller support 12.

[0056] In this embodiment, when the lifting column is fully raised and the moving ring seat 15 needs to move along an arc-shaped trajectory to drive the detection base 9 and the transverse measuring probe 10 around the side wall of the lifting column for measurement, there is no need to control the rotation angle through the small stepper motor 22. The spherical roller 13 can always maintain a good low-friction contact with the surface of the lifting column and maintain stable pressure on the side of the lifting column along the measuring probe. At the same time, the roller 27 in the annular groove 26 effectively reduces the frictional resistance of the roller 13 during transverse movement, so that the roller 13 can roll smoothly even on complex or slightly irregular surfaces of the lifting column, thereby improving the stability and accuracy of the measurement process. In this embodiment, the friction of the roller 13 is greatly reduced during longitudinal movement or measurement around the lifting column, thereby ensuring that the roller 13 rolls quickly and smoothly along the surface of the lifting column and drives the transverse measuring probe to slide, realizing complete detection of the side wall of the lifting column.

[0057] In this embodiment, to improve the adaptability and measurement stability of the roller 13 to the surface of the lifting column, a polyurethane thin layer 39 with a thickness of 0.6 mm is coated on the outer surface of the roller 13. The polyurethane thin layer 39 is applied in a wrapping manner to the outer surface of the spherical roller 13, and its material has good flexibility, elasticity, and wear resistance. When the roller 13 rolls along the side wall of the lifting column, the polyurethane thin layer 39 can undergo elastic deformation within a small range, allowing the roller 13 to fit more fully against the outer surface of the lifting column, thereby improving the contact stability between the lateral measuring probe 10 and the lifting column. The thickness of the polyurethane layer is controlled between 0.5 and 1.0 mm to balance flexibility and structural strength. If the thickness is too thin, it cannot effectively buffer minor impacts or compensate for minor surface irregularities; if the thickness is too thick, it will affect the rigidity of the roller 13 itself and the degree of freedom of the rolling ball, leading to measurement errors. Therefore, setting its thickness within the range of 0.5–1.0 mm ensures that the roller 13 maintains sufficient load-bearing capacity while possessing appropriate flexibility, enabling smooth rolling and stable contact during sidewall inspection, thereby further improving the continuity of sidewall measurements and the accuracy of the data. Furthermore, the polyurethane surface has high wear resistance and anti-aging properties, and is not prone to wear or hardening even in applications with frequent rolling, helping to extend the overall service life of the roller 13 assembly and maintain long-term stable measurement accuracy.

[0058] Embodiments of the present invention have been shown and described. It will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-dimensional measuring device for a rising column, characterized in that: The system includes a longitudinal worktable (1), a movable platform (2) located below the surface of the longitudinal worktable (1), an electric chuck (3) on the movable platform (2) for clamping the lifting column, a lifting stroke measuring mechanism (4) and a lifting verticality measuring mechanism (5) located above the surface of the longitudinal worktable (1), the lifting verticality measuring mechanism (5) being located between the electric chuck (3) and the lifting stroke measuring mechanism (4), the lifting stroke measuring mechanism (4) including a stroke measuring seat (6), a longitudinal measuring probe (7) and a displacement sensor for monitoring the longitudinal displacement of the longitudinal measuring probe (7) being slidably mounted in the stroke measuring seat (6), the longitudinal measuring probe (7) passing through... The over-stroke measuring seat (6) extends downwards. The lifting verticality measuring mechanism (5) includes a measuring ring seat (8). Several detection bases (9) are arranged around the measuring ring seat (8). A transverse measuring probe (10) is slidably provided on one side of the detection base (9) facing the center of the measuring ring seat (8). A support plate (11) is connected to one end of the transverse measuring probe (10) away from the detection base (9). A roller bracket (12) is provided on the support plate (11). A roller (13) is rotatably provided on the roller bracket (12). A pressure sensor (14) is provided between the other end of the transverse measuring probe (10) and the inner side of the detection base (9). The measuring ring seat (8) includes a movable ring seat (15) and a fixed ring. The fixed ring seat (16) has an arc-shaped slide rail (17) on its surface, and the movable ring seat (15) has a matching slide groove (18) at its bottom. The movable ring seat (15) is rotatably mounted above the fixed ring seat (16) via the arc-shaped slide rail (17) and the slide groove (18). The fixed ring seat (16) has a mounting plate (19) on its side, and the movable ring seat (15) has a protruding plate (20) on its corresponding side. An electric telescopic rod (21) is hinged to the mounting plate (19). The output end of the electric telescopic rod (21) is hinged to the protruding plate (20). The detection base (9) is mounted on the movable ring seat (15). The electric telescopic rod (21) pushes the movable ring seat (15) to rotate. The lifting and lowering... The straightness measuring mechanism (5) is provided with a lifting speed measuring mechanism, which includes a magnetic bead (23) embedded in the roller (13) and a Hall switch (24) fixed on the roller bracket (12). An elastic reset member is provided between the transverse measuring probe (10) and the pressure sensor (14). The elastic reset member is used to push the transverse measuring probe (10) outward so that the roller (13) automatically fits the surface of the lifting column of different diameters. A disc (28) is provided below the longitudinal measuring probe (7). A ball-and-socket structure (29) is provided above the disc (28). A ball head (30) is provided at the bottom of the longitudinal measuring probe (7). The ball head (30) is slidably sleeved in the ball-and-socket structure (29).

2. The multi-dimensional measuring device for a rising column according to claim 1, characterized in that: A small stepper motor (22) is provided on the side of the support plate (11) facing the detection base (9). The output end of the small stepper motor (22) passes through the support plate (11) and is connected to the roller bracket (12). The small stepper motor (22) drives the roller bracket (12) to rotate.

3. The multi-dimensional measuring device for a rising column according to claim 2, characterized in that: The roller (13) has a spherical structure. A spherical groove (25) is provided on the roller bracket (12). The roller (13) is slidably sleeved in the spherical groove (25). An annular groove (26) is provided on the inner side of the spherical groove (25). A roller (27) is slidably provided in the annular groove (26). The roller (27) is slidably connected to the roller (13).

4. The multi-dimensional measuring device for a rising column according to claim 3, characterized in that: The ball head (30) includes an upper cover (31) and a lower ball (32), which are screwed together. A return spring (33) is provided in the middle of the disc (28). The return spring (33) passes through the lower ball (32) upward and abuts against the upper cover (31). A magnetic ring (34) is provided at the bottom of the disc (28).

5. The multi-dimensional measuring device for a rising column according to claim 4, characterized in that: Inside the stroke measuring seat (6), guide rods (35) are provided on both sides of the longitudinal measuring probe (7). A sliding seat (36) is connected to the top of the longitudinal measuring probe (7). The two sides of the sliding seat (36) are slidably connected to the guide rods (35). The displacement sensor includes a magnetic component (37) on the top of the longitudinal measuring probe (7) and a Hall array (38) longitudinally disposed on the inner surface of the stroke measuring seat (6).

6. The multi-dimensional measuring device for a rising column according to claim 2, characterized in that: The surface of the roller (13) is provided with a polyurethane thin layer (39) with a thickness of 0.5–1.0 mm.

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