Full-automatic hard pipe bending degree measuring instrument
The fully automatic rigid pipe bending measurement instrument, using a laser emitter and an automatic steel tape measure, solves the problems of cumbersome and error-prone process in measuring the bending of rigid pipes, and achieves high-precision and convenient bending measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU FANGZHENG ENG TECH DEV TESTING
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-21
AI Technical Summary
The existing process for measuring the curvature of rigid pipes is cumbersome, has a low degree of automation, and suffers from large errors, which affects the accuracy and efficiency of the measurement.
The fully automatic rigid pipe bending measuring instrument uses a laser emitter and an automatic steel tape measure, combined with a DC motor and a measuring display, to achieve automated bending measurement and reduce human error.
It improves measurement accuracy, simplifies operation procedures, increases measurement efficiency, reduces production costs, and facilitates maintenance.
Smart Images
Figure CN224151673U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rigid pipe bending measurement technology, and in particular to a fully automatic rigid pipe bending measuring instrument. Background Technology
[0002] Currently, to determine the degree of bending of rigid pipes along their length, the sample needs to be placed on a flat surface and rolled. When the sample has the maximum gap with the surface, the contact points between the sample and the surface at both ends are marked. Then, the sample is rolled 90 degrees so that the concave side faces the operator, and a measuring tape is used to pull the sample from one end along the outer wall to the other end to measure its length.
[0003] Mark the points at both ends of the sample and stretch the measuring line horizontally along its length. Use a vernier caliper or metal ruler to measure the maximum vertical distance to the pipe wall, which is the maximum height from the chord to the arc.
[0004] Disadvantages of existing measurement technologies:
[0005] 1. The measurement process is cumbersome, with low automation and low efficiency.
[0006] 2. Significant Measurement Errors: In traditional tests for measuring the bending degree of rigid pipes, the use of uncalibrated or insufficiently accurate vernier calipers or rulers can lead to measurement errors. When reading measurement data, errors can occur due to the measurer's line of sight or unclear scale markings on the measuring tool. Furthermore, errors can also arise if the measurer fails to maintain the correct posture or position during sample placement. All of these factors directly impact the measurement results and accuracy.
[0007] To address these issues, we developed a fully automatic rigid pipe bending measurement instrument. Utility Model Content
[0008] The purpose of this invention is to overcome the shortcomings of the existing technology by providing a fully automatic rigid pipe bending measuring instrument, which has the advantages of improved measurement accuracy, easy positioning, improved measurement efficiency, and easy maintenance.
[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a fully automatic rigid pipe bending degree measuring instrument, including a DC motor, a bracket and a lead screw track at one end of the DC motor, a laser emitter and a sliding baffle slidably connected to the lead screw track, and a shaft speed measuring device at one end, the shaft speed measuring device being electrically connected to a measuring display, a transparent glass plate being mounted on the bracket, a movable positioning plate at one end of the transparent glass plate, and an automatically retractable steel tape measure being mounted on the movable positioning plate.
[0010] Preferably, a rigid pipe abuts between the movable positioning plate and the sliding baffle.
[0011] Preferably, the rigid tube has a first end, the bottom of the first end is the starting point O, and the top center of the laser emitter is on the same vertical line as the starting point O.
[0012] Preferably, the rigid tube has a second end, and a positioning pointer is provided at the top of the sliding baffle, with the top of the positioning pointer abutting against the bottom of the second end.
[0013] Preferably, the laser emitter has an emission port at its top and a starting point stop is provided on one side along the direction of the lead screw track.
[0014] Preferably, the shortest distance between the top of the emission port and the top of the transparent glass plate is H.
[0015] Preferably, the movable positioning plate is provided with a vertical adjustment groove, and the adjustment groove is slidably connected to a starting height adjustment component.
[0016] Preferably, the starting height adjusting component and the automatic storage steel tape measure are equipped with a steel ruler, the steel ruler is wound around the bottom end of the starting height adjusting component, and abuts against the top end of the first end.
[0017] Preferably, the measuring display has an arc height display value and an arc length display value.
[0018] Preferably, the accuracy of the measuring display is 0.1 mm.
[0019] Preferably, a coupling is provided at one end of the DC motor, and the coupling is fixedly connected to the lead screw track.
[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0021] 1. Automatic measurement using a laser emitter and an automatically retractable steel tape measure improves the accuracy of bending measurement, greatly avoids human reading errors, and enhances test accuracy.
[0022] 2. The movable positioning plate, sliding baffle, and transparent glass plate facilitate the fixing of rigid pipes and the positioning measurement points.
[0023] 3. Simple to operate, it can measure arc height and arc length simultaneously, improving measurement efficiency.
[0024] 4. Reduce production costs and facilitate replacement and maintenance. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of the fully automatic rigid pipe bending measuring instrument of this utility model.
[0026] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0028] Figure 1 and Figure 2 A fully automatic rigid pipe bending measurement instrument includes a DC motor 10. One end of the DC motor 10 is equipped with a bracket 60 and a lead screw track 12. The lead screw track 12 slidably connects a laser emitter 20 and a sliding baffle 70, and another end is equipped with a shaft speed measuring device 80. The shaft speed measuring device 80 measures the number of rotations of the laser emitter 20 on the lead screw track to measure the distance the laser emitter moves. One end of the DC motor 10 is equipped with a coupling 11, which is fixedly connected to the lead screw track 12. The shaft speed measuring device 80 is electrically connected to a measurement display 90. The bracket 60 supports a transparent glass plate 40, and one end of the transparent glass plate 40 is equipped with a movable positioning plate 30. The movable positioning plate 30 is equipped with an automatically retractable steel tape measure 50. A rigid pipe 100 abuts between the movable positioning plate 30 and the sliding baffle 70. The rigid tube 100 has a first end 101 and a second end 102. The bottom end of the first end 101 is the starting point O. The center of the top of the laser emitter 20 is on the same vertical line as point O. A positioning pointer 71 is provided at the top of the sliding baffle 70, and the top of the positioning pointer 71 abuts against the bottom of the second end 102. The rigid tube 100 is mounted on the top of the transparent glass plate 40, and its two ends are abutted by the movable positioning plate 30 and the sliding baffle 70, respectively. When the left end of the laser emitter 20 abuts against the starting point block 61, the emission port 21 is aligned with point O. When the right end of the laser emitter 20 abuts against the sliding baffle 70, the emission port 21 is aligned with the bottom of the second end 102.
[0029] The laser emitter 20 has an emission port 21 at its top and a starting point stop 61 on one side along the direction of the lead screw track 12. The shortest distance between the top of the emission port 21 and the top of the transparent glass plate 40 is H. The arc height is the maximum distance from the emission port 21 to the rigid tube minus the distance H.
[0030] The movable positioning plate 30 is provided with a vertical adjustment groove 31, which is slidably connected to a starting height adjustment component 32. A steel ruler 51 is provided between the starting height adjustment component 32 and the automatic retractable steel tape measure 50. The steel ruler 51 is wound around the bottom end of the starting height adjustment component 32 and abuts against the top end of the first end 101. The starting height adjustment component 32 is adjusted up and down according to the height of the top end of the first end 101, so that the starting height adjustment component 32 abuts against the top end of the first end 101.
[0031] To improve measurement accuracy, the measuring display 90 is equipped with an arc height display and an arc length display, and the accuracy of the measuring display 90 is 0.1 mm. The arc height and arc length values are directly displayed on the measuring display 90.
[0032] The DC motor 10 drives the laser emitter 20 to move from left to right via the lead screw rail 12. The laser emitter 20 abuts against the starting point stop, with its top end aligned with point O at the first end of the rigid tube 100. The positioning pointer 71 at the top of the sliding baffle 70 is aligned with the second end of the rigid tube 100. Before bending, the end faces of both ends of the rigid tube are perpendicular to the length direction of the rigid tube. The shaft speed measuring device at the tail of the lead screw rail can measure the moving distance of the laser emitter based on the number of rotations of the lead screw. The moving positioning plate is equipped with a flat-bottomed automatic retractable steel tape measure. The tape measure can be adjusted to the correct position using the tape starting point height adjustment device according to the tube diameter. The steel tape measure is pulled out and placed close to the tube to measure the tube length. While the laser emitter moves, it emits a laser to measure the bending height of the rigid tube. The laser emitter will automatically stop after sliding to contact the sliding baffle and identify the maximum value of the distance irradiated to the rigid tube. This maximum value minus H is the sag measurement value (the maximum height from the chord to the arc). The measurement data is displayed on the connected measurement display. The travel length of the laser emitter is the distance between the two lower ends of the rigid pipe. This distance is displayed on the connected measurement monitor. The curvature is obtained by the ratio of the arc height to the length of the rigid pipe.
[0033] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.
Claims
1. A fully automatic hard pipe bending degree measuring instrument, characterized in that: The device includes a DC motor (10), one end of which is provided with a bracket (60) and a lead screw track (12). The lead screw track (12) is slidably connected to a laser emitter (20) and a sliding baffle (70), and one end is provided with a shaft speed measuring device (80). The shaft speed measuring device (80) is electrically connected to a measuring display (90). The bracket (60) supports a transparent glass plate (40), one end of which is provided with a movable positioning plate (30). The movable positioning plate (30) is provided with an automatic steel tape measure (50). The movable positioning plate (30) and the sliding baffle (70) abut against a rigid pipe (100).
2. The fully automatic hard pipe bend measuring instrument according to claim 1, characterized in that, The rigid tube (100) has a first end (101), the bottom of the first end (101) is the starting point O, and the top center of the laser emitter (20) is on the same vertical line as the starting point O.
3. The fully automatic hard pipe bend measuring instrument according to claim 2, characterized in that, The rigid tube (100) is provided with a second end (102), and a positioning pointer (71) is provided at the top of the sliding baffle (70), with the top of the positioning pointer (71) abutting against the bottom of the second end (102).
4. The fully automatic hard pipe bend measuring instrument according to claim 3, characterized in that, The laser emitter (20) has an emission port (21) at its top end and a starting point stop (61) on one side along the direction of the lead screw track (12).
5. The fully automatic hard pipe bend measuring instrument according to claim 4, wherein The shortest distance between the top of the emission port (21) and the top of the transparent glass plate (40) is H.
6. The fully automatic hard pipe bend measuring instrument according to claim 2, wherein The movable positioning plate (30) is provided with a vertical adjustment groove (31), and the adjustment groove (31) is slidably connected to the starting point height adjustment component (32).
7. The fully automatic hard pipe bend measuring instrument according to claim 6, characterized in that, The starting height adjustment component (32) and the automatic storage steel tape measure (50) are provided with a steel ruler (51). The steel ruler (51) is wrapped around the bottom end of the starting height adjustment component (32) and abuts against the top end of the first end (101).
8. The fully automatic rigid pipe bending degree measuring instrument according to claim 1, characterized in that, The measurement display (90) is equipped with an arc height display value and an arc length display value.
9. The fully automatic hard pipe bend measuring instrument according to claim 1, wherein, The accuracy of the measurement display (90) is 0.1 mm.
10. The fully automatic hard pipe bend measuring instrument according to claim 1, wherein A coupling (11) is provided at one end of the DC motor (10), and the coupling (11) is fixedly connected to the lead screw track (12).