Automatic measuring device for the bending degree of a steel pipe

Abstract

The application relates to an automatic measuring device for the bending degree of a steel pipe, which comprises a rack, a moving seat for placing the steel pipe arranged on the rack, a rotating piece for driving the steel pipe to rotate arranged on the moving seat, a support arranged on the rack, a probe for detecting the bending degree of the steel pipe slidably installed on the support, and a moving piece for driving the probe to move along the length direction of the steel pipe arranged on the support. The moving piece drives the probe to move along the length direction of the steel pipe, the probe detects the bending degree, the rotating piece drives the steel pipe to rotate, the bending degree of different parts of the steel pipe is automatically measured, and the application has the effect of high measuring efficiency.

Description

Technical Field

[0001] This application relates to the field of steel pipe testing equipment, and in particular to an automatic measuring device for the curvature of steel pipes. Background Technology

[0002] The curvature of steel pipes is a geometric deviation index that characterizes the deviation of steel pipes from an ideal straight state in the length direction. Measuring the curvature of steel pipes is a core quality control link to ensure the safe and reliable operation of infrastructure.

[0003] In existing technologies, measurements are typically taken manually, including the ruler gap method and the string measurement method. The ruler gap method uses a Class A precision ruler (error ≤ 0.05 mm / m) against the surface of the steel pipe, and a plug gauge or gap gauge is used to measure the maximum gap value. Its physical essence is to characterize the curvature by utilizing the spatial envelope deviation between a rigid reference and the measured surface. The string measurement method involves fixing a tensioned steel wire (tension typically ≥ 20 N) at both ends of the steel pipe, and using a depth micrometer to measure the maximum gap from the wire to the pipe body. Based on the principle of determining a straight line from two points, it converts the chord height into a percentage of curvature, making it suitable for rapid on-site assessment.

[0004] However, due to differences in stacking location and measurement method, there are certain measurement deviations when measuring manually. In addition, manual measurement requires multiple people to push the steel pipe to measure each side, which is time-consuming, labor-intensive and inefficient. Utility Model Content

[0005] To address the problem of time-consuming, labor-intensive, and inefficient manual measurement of steel pipe curvature, this application provides an automatic measurement device for steel pipe curvature.

[0006] The automatic measuring device for the bending degree of steel pipe provided in this application adopts the following technical solution:

[0007] An automatic measuring device for the curvature of a steel pipe includes a frame, a movable seat for placing the steel pipe on the frame, a rotating component for driving the steel pipe to rotate on the movable seat, a support on the frame, a probe for detecting the curvature of the steel pipe slidably mounted on the support, and a moving component for driving the probe to move along the length direction of the steel pipe on the support.

[0008] By adopting the above technical solution, the moving component drives the probe to move along the length of the steel pipe, the probe detects the curvature, and the rotating component drives the steel pipe to rotate, so as to automatically measure the curvature of different parts of the steel pipe, which has high measurement efficiency.

[0009] Optionally, the movable seat includes a first movable seat and a second movable seat, which are arranged parallel to each other. A rotating wheel is rotatably mounted on both the first and second movable seats, and two rotating wheels are arranged adjacent to each other. The steel pipe abuts against the outer peripheral wall of the rotating wheel.

[0010] By adopting the above technical solution, the first and second movable seats support the steel pipe, and the two adjacent rotating wheels on the two movable seats abut against the outer peripheral wall of the steel pipe, so that the steel pipe is stably placed on the movable seats, which facilitates the rotation operation when measuring the curvature later.

[0011] Optionally, the moving component includes a moving motor, a lead screw, and a guide rod. The lead screw is rotatably mounted on the bracket and is distributed parallel to the axis of the steel pipe. The moving motor is mounted on the bracket, and the lead screw is connected to the output shaft of the moving motor. The guide rod is mounted on the bracket and is distributed parallel to the lead screw. A guide block is slidably mounted on the bracket, and the probe is disposed on one side of the guide block. The guide block is threadedly connected to the lead screw and slidably connected to the guide rod.

[0012] By adopting the above technical solution, the moving motor drives the lead screw to rotate, causing the guide block, which is threadedly connected to the lead screw and slidably connected to the guide rod, to move along the lead screw, thereby driving the probe to move along the length of the steel pipe, so as to realize the detection of the curvature of the steel pipe at different positions.

[0013] Optionally, a clamping frame is rotatably mounted on each of the opposite sides of the first movable seat. A push cylinder is provided on the first movable seat for pushing the clamping frame to rotate. A clamping wheel is rotatably mounted on the clamping frame. The side wall of the clamping wheel abuts against the outer peripheral wall of the steel pipe. The second movable seat is provided with the same clamping frame and clamping wheel as the first movable seat.

[0014] By adopting the above technical solution, the cylinder drives the clamping frame to rotate, so that the side wall of the clamping wheel on the clamping frame abuts against the outer peripheral wall of the steel pipe, reducing the shaking of the steel pipe during rotation and improving the accuracy of steel pipe bending measurement.

[0015] Optionally, the clamping frame includes a push rod and an abutment rod. The push rod is rotatably mounted on the first movable seat, and the abutment rod is rotatably mounted on the end of the abutment rod opposite to the first movable seat. The clamping wheel is rotatably mounted on the abutment rod, and the abutment rod is provided with a locking member for limiting the movement between the abutment rod and the push rod.

[0016] By adopting the above technical solution, the push rod is rotatably mounted on the first movable seat, and the abutment rod is rotatably mounted on the push rod and locked by the locking device, which makes it convenient to rotate the abutment rod to adjust the position of the pressure wheel. It is suitable for pressing and limiting steel pipes of different radii. The pressure wheel abuts against the outer circumferential wall of the steel pipe, reducing frictional resistance when the steel pipe rotates.

[0017] Optionally, the locking component includes a limiting rod and a plug rod. The limiting rod is slidably mounted on the abutting rod, and a limiting spring is provided between the limiting rod and the abutting rod. The plug rod is disposed on the limiting rod, and the pushing rod is provided with a plurality of slots. The plug rod is inserted into the pushing rod through the slots.

[0018] By adopting the above technical solution, the limiting spring pulls the limiting rod, which in turn drives the insertion rod to be inserted into the slot of the push rod, thereby locking and limiting the connection between the abutment rod and the push rod. When adjustment is required, the abutment rod is rotated, and the limiting rod is pulled to be inserted into different slots to limit the abutment rod. The adjustment operation is convenient.

[0019] Optionally, an adjusting screw is threaded onto the abutting rod, a push plate is slidably mounted on the abutting rod, one end of the adjusting screw is rotatably connected to one side of the push plate, a connecting rod is slidably mounted on the push plate, a connecting spring is sleeved on the connecting rod, one end of the connecting rod is connected to a pressure wheel frame, and the pressure wheel is rotatably mounted on the pressure wheel frame.

[0020] By adopting the above technical solution, the position of the push plate is adjusted by rotating the adjusting screw, thereby adjusting the position of the clamping wheel. The connecting spring plays a buffering role, reducing damage to the steel pipe during the clamping process.

[0021] Optionally, a threaded sleeve is provided on the lower side of the guide block, and a connecting screw is provided at one end of the probe, the connecting screw being threadedly connected to the threaded sleeve.

[0022] By adopting the above technical solution, the probe position can be adjusted by rotating the connecting screw, which is suitable for measuring steel pipes of different radii. The threaded installation facilitates the installation and disassembly of the probe, and makes it easy to replace or maintain the probe.

[0023] Optionally, the probe is elastically connected to the connecting screw, a substrate is provided on one side of the probe, and a fiber optic grating sensor for receiving the deformation of the substrate is provided on the support.

[0024] By adopting the above technical solution, the probe and the connecting screw are elastically connected, and the substrate deformation is received by the fiber optic grating sensor, which facilitates the detection of bending degree.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. It can automatically measure the curvature of steel pipes, avoiding measurement deviations caused by differences in stacking location and measurement method;

[0027] 2. No need for multiple people to push the steel pipe to measure each side, saving manpower and time and improving measurement efficiency;

[0028] 3. It can drive the steel pipe to rotate and move the probe along the length of the steel pipe, so as to realize multi-directional measurement of the bending degree of the steel pipe. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of this application.

[0030] Figure 2 This is a three-dimensional structural diagram of the first movable seat of this application.

[0031] Figure 3 This is a partial three-dimensional structural diagram of the probe side of the support in this application.

[0032] Figure 4 This is an enlarged cross-sectional structural diagram of part A of this application.

[0033] Figure 5 This is an enlarged three-dimensional structural diagram of Part B of this application.

[0034] Those skilled in the art will understand that the elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be enlarged relative to other elements to aid in understanding the embodiments of the invention.

[0035] Reference numerals: 1. Frame; 11. Movable seat; 111. First movable seat; 112. Second movable seat; 113. Rotating wheel; 12. Support; 13. Fiber optic grating sensor; 2. Rotating component; 21. Rotating motor; 22. Synchronous pulley; 23. Synchronous belt; 3. Probe; 31. Connecting screw; 32. Return spring; 33. Base plate; 4. Movable component; 41. Moving motor; 42. Lead screw; 43. Guide rod; 44. Guide block; 45. Threaded sleeve; 5. Pressing frame; 51. Push rod; 511. Slot; 52. Abutment rod; 53. Pressing wheel; 54. Push cylinder; 55. Adjusting screw; 56. Push plate; 57. Connecting rod; 58. Connecting spring; 59. Pressing wheel frame; 6. Locking component; 61. Limiting rod; 62. Inserting rod; 63. Limiting spring. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] This application discloses an automatic measuring device for the bending degree of steel pipes, referring to... Figure 1The device includes a frame 1, a movable base 11, a rotating component 2, a support 12, a probe 3, and a movable component 4. The movable base 11 is mounted on the frame 1 to hold the steel pipe. The rotating component 2 is mounted on the movable base 11 to drive the steel pipe to rotate. The support 12 is mounted on the frame 1. The probe 3 is slidably mounted on the support 12 to detect the bending degree of the steel pipe. The movable component 4 is mounted on the support 12 to drive the probe 3 to move along the length of the steel pipe. The movable component 4 drives the probe 3 to move along the length of the steel pipe for detection. The rotating component 2 can make the steel pipe rotate, thereby comprehensively measuring the bending degree of the steel pipe at different positions. This achieves the effect of automatically measuring the bending degree of different parts of the steel pipe and improving measurement efficiency.

[0038] Reference Figure 1 and Figure 2 The movable seat 11 includes a first movable seat 111 and a second movable seat 112 arranged horizontally. The first movable seat 111 and the second movable seat 112 are distributed parallel to each other. Rotating wheels 113 are rotatably installed on both the first movable seat 111 and the second movable seat 112. Two rotating wheels 113 are arranged adjacent to each other. When the steel pipe is placed on the rotating wheels 113, the two rotating wheels 113 support the steel pipe from both sides.

[0039] Reference Figure 1 and Figure 2 The rotating component 2 includes a rotating motor 21, a synchronous pulley 22, and a synchronous belt 23. The rotating motor 21 is located on one side of the first movable seat 111. The synchronous pulley 22 is coaxially located at the output shaft of the rotating motor 21. The output shaft of the rotating motor 21 is coaxially connected to the synchronous pulley 22 on one side. The synchronous pulleys 22 on both sides are connected by the synchronous belt 23. When the rotating motor 21 starts, it drives the synchronous pulley 22 to rotate, and the synchronous belt 23 drives the rotating pulleys 113 on both sides to rotate, thereby driving the steel pipe placed on the rotating pulleys 113 to rotate.

[0040] Reference Figure 1 and Figure 3 The moving component 4 includes a moving motor 41, a lead screw 42, and a guide rod 43. The lead screw 42 is rotatably mounted on the bracket 12 and is parallel to the axis of the steel pipe. The moving motor 41 is mounted on the bracket 12, and the lead screw 42 is connected to the output shaft of the moving motor 41. When the moving motor 41 starts, it drives the lead screw 42 to rotate. The guide rod 43 is mounted on the bracket 12 and is parallel to the lead screw 42. A guide block 44 is slidably mounted on the bracket 12. The probe 3 is located on the side facing downwards from the guide block 44. The guide block 44 is threadedly connected to the lead screw 42 and slidably connected to the guide rod 43. When the lead screw 42 rotates, it drives the guide block 44 to move along the axial direction of the lead screw 42, thereby driving the probe 3 to move along the length of the steel pipe, realizing the detection of the curvature of the steel pipe at different positions.

[0041] Reference Figure 3A threaded sleeve 45 is provided on the downward-facing side of the guide block 44, and a connecting screw 31 is provided on the upward-facing end of the probe 3. The connecting screw 31 is threadedly connected to the threaded sleeve 45. By rotating the connecting screw 31, the position of the probe 3 relative to the guide block 44 can be adjusted, which is suitable for measuring steel pipes of different radii. The threaded installation method facilitates the installation and removal of the probe 3. When the probe 3 is damaged or needs to be replaced with a different type of probe 3, it can be easily operated, which is conducive to the replacement or maintenance of the probe 3.

[0042] Reference Figure 3 The probe 3 is slidably connected to the connecting screw 31, and the probe 3 and the connecting screw 31 are elastically connected by a return spring 32. A base plate 33 is provided on one side of the probe 3, and a fiber optic grating sensor 13 for receiving the deformation of the base plate 33 is provided on the bracket 12. When the probe 3 detects a bending change on the surface of the steel pipe, the probe 3 will undergo a slight displacement. This displacement will be transmitted to the base plate 33 through the elastic connection, causing the base plate 33 to deform. The fiber optic grating sensor 13 receives the deformation information of the base plate 33, converts it into an electrical signal, and obtains the bending degree data of the steel pipe after processing. An alarm is provided on the bracket 12, which is electrically connected to the fiber optic grating sensor 13. When the data exceeds the limit range, an alarm is issued.

[0043] Reference Figure 2 and Figure 4 A clamping frame 5 is rotatably mounted on both sides of the first movable seat 111 and the second movable seat 112. The clamping frame 5 includes a push rod 51 and an abutment rod 52. The push rod 51 is rotatably mounted on the first movable seat 111, and the abutment rod 52 is rotatably mounted on the end of the push rod 51 opposite to the first movable seat 111. A clamping wheel 53 is rotatably mounted on the abutment rod 52. A push cylinder 54 is provided on the first movable seat 111, and the push cylinder 54 is rotatably connected to the first movable seat 111. The piston rod of the push cylinder 54 is rotatably connected to the push rod 51. When the push cylinder 54 is activated, the piston rod extends or retracts, pushing the push rod 51 to rotate, which in turn drives the abutment rod 52 to rotate, causing the side wall of the clamping wheel 53 to abut against the outer circumferential wall of the steel pipe. This allows for clamping operations at both ends of the steel pipe, reducing the swaying of the steel pipe during rotation and improving the accuracy of steel pipe bending measurement.

[0044] Reference Figure 2 and Figure 4A locking element 6 is provided on the abutment rod 52. The locking element 6 includes a limiting rod 61 and an insert rod 62. The limiting rod 61 is slidably mounted on the abutment rod 52. A limiting spring 63 is provided between the limiting rod 61 and the abutment rod 52. The insert rod 62 is set on the limiting rod 61. The push rod 51 is provided with several slots 511, which are arranged in an arc shape. The insert rod 62 is inserted into the push rod 51 through the slots 511. When it is necessary to adjust the position of the clamping wheel 53, the limiting rod 61 is pulled to pull the insert rod 62 out of the current slot 511. Then, the abutment rod 52 is rotated to the appropriate position, and the limiting rod 61 is released. Under the tension of the limiting spring 63, the insert rod 62 is inserted into the corresponding slot 511, locking and limiting the abutment rod 52 and the push rod 51. The adjustment operation is convenient and suitable for clamping and limiting steel pipes of different radii.

[0045] Reference Figure 2 and Figure 5 An adjusting screw 55 is threaded onto the abutment rod 52. A push plate 56 is slidably mounted on the abutment rod 52, and the push plate 56 is slidably connected to the abutment rod 52 via a sliding rod. One end of the adjusting screw 55 is rotatably connected to one side of the push plate 56. When the adjusting screw 55 is rotated, the push plate 56 moves along the abutment rod 52 due to the threaded engagement between the adjusting screw 55 and the abutment rod 52. A connecting rod 57 is slidably mounted on the push plate 56, and a connecting spring 58 is sleeved on the connecting rod 57. One end of the connecting rod 57 is connected to a pressure wheel frame 59, and a pressure wheel 53 is rotatably mounted on the pressure wheel frame 59. The connecting spring 58 acts as a buffer; when the pressure wheel 53 contacts the steel pipe, if the pressure is too high, the connecting spring 58 will be compressed, reducing damage to the steel pipe during the clamping process.

[0046] The implementation principle of the automatic measuring device for the bending degree of a steel pipe in this application embodiment is as follows: the steel pipe is placed at the rotating wheel 113 of the first moving seat 111 and the second moving seat 112. The pushing cylinders 54 on both sides drive the pushing rod 51 to rotate until the clamping wheel 53 abuts against the outer peripheral wall of the steel pipe. At this time, the moving motor 41 drives the lead screw 42 to rotate and drive the guide block 44 to move. The guide block 44 drives the probe 3 to move along the length of the steel pipe, thereby realizing the automatic measurement of the bending degree of different parts of the steel pipe. The rotating motor 21 drives the synchronous wheel 22 to rotate, which drives the rotating wheel 113 to rotate and then drives the steel pipe to rotate, thereby measuring the bending degree at different positions on the steel pipe.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic measuring device for the bending degree of a steel pipe, comprising a frame (1), wherein a movable seat (11) for placing the steel pipe is provided on the frame (1), characterized in that: The movable seat (11) is provided with a rotating component (2) for driving the steel pipe to rotate. The frame (1) is provided with a bracket (12). A probe (3) for detecting the bending degree of the steel pipe is slidably installed on the bracket (12). The bracket (12) is provided with a moving component (4) for driving the probe (3) to move along the length direction of the steel pipe.

2. The automatic measuring device for the bending degree of a steel pipe according to claim 1, characterized in that: The movable seat (11) includes a first movable seat (111) and a second movable seat (112). The first movable seat (111) and the second movable seat (112) are distributed parallel to each other. Rotating wheels (113) are rotatably installed on both the first movable seat (111) and the second movable seat (112). Two rotating wheels (113) are arranged adjacent to each other. The steel pipe abuts against the outer peripheral wall of the rotating wheel (113).

3. The automatic measuring device for the bending degree of a steel pipe according to claim 1, characterized in that: The moving part (4) includes a moving motor (41), a lead screw (42) and a guide rod (43). The lead screw (42) is rotatably mounted on the bracket (12) and is distributed parallel to the axis of the steel pipe. The moving motor (41) is mounted on the bracket (12). The lead screw (42) is connected to the output shaft of the moving motor (41). The guide rod (43) is mounted on the bracket (12) and is distributed parallel to the lead screw (42). A guide block (44) is slidably mounted on the bracket (12). The probe (3) is located on one side of the guide block (44). The guide block (44) is threadedly connected to the lead screw (42) and slidably connected to the guide rod (43).

4. The automatic measuring device for the bending degree of a steel pipe according to claim 2, characterized in that: A clamping frame (5) is rotatably mounted on both sides of the first movable seat (111). A push cylinder (54) for pushing the clamping frame (5) to rotate is provided on the first movable seat (111). A clamping wheel (53) is rotatably mounted on the clamping frame (5). The side wall of the clamping wheel (53) abuts against the outer peripheral wall of the steel pipe. The second movable seat (112) is provided with the same clamping frame (5) and clamping wheel (53) as the first movable seat (111).

5. The automatic measuring device for the bending degree of a steel pipe according to claim 4, characterized in that: The clamping frame (5) includes a push rod (51) and an abutment rod (52). The push rod (51) is rotatably mounted on the first movable seat (111). The abutment rod (52) is rotatably mounted on one end of the abutment rod (52) away from the first movable seat (111). The clamping wheel (53) is rotatably mounted on the abutment rod (52). The abutment rod (52) is provided with a locking member (6) for limiting the movement between the abutment rod (52) and the push rod (51).

6. The automatic measuring device for the bending degree of a steel pipe according to claim 5, characterized in that: The locking component (6) includes a limiting rod (61) and a plug rod (62). The limiting rod (61) is slidably mounted on the abutting rod (52). A limiting spring (63) is provided between the limiting rod (61) and the abutting rod (52). The plug rod (62) is disposed on the limiting rod (61). The push rod (51) is provided with a plurality of slots (511). The plug rod (62) is inserted into the push rod (51) through the slots (511).

7. The automatic measuring device for the bending degree of a steel pipe according to claim 5, characterized in that: An adjusting screw (55) is threaded onto the abutting rod (52). A push plate (56) is slidably mounted on the abutting rod (52). One end of the adjusting screw (55) is rotatably connected to one side of the push plate (56). A connecting rod (57) is slidably mounted on the push plate (56). A connecting spring (58) is sleeved on the connecting rod (57). One end of the connecting rod (57) is connected to a pressure wheel frame (59). The pressure wheel (53) is rotatably mounted on the pressure wheel frame (59).

8. The automatic measuring device for the bending degree of a steel pipe according to claim 3, characterized in that: The guide block (44) has a threaded sleeve (45) on its lower side, and the probe (3) has a connecting screw (31) at one end, which is threadedly connected to the threaded sleeve (45).

9. The automatic measuring device for the bending degree of a steel pipe according to claim 8, characterized in that: The probe (3) is elastically connected to the connecting screw (31). A substrate (33) is provided on one side of the probe (3), and a fiber optic grating sensor (13) for receiving the deformation of the substrate (33) is provided on the bracket (12).

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