PVC pipe deformation detection device

Abstract

The utility model provides a PVC (polyvinyl chloride) pipe deformation detection device, which comprises two moving mechanisms arranged in a PVC pipe; the connecting shaft is connected with the moving mechanism and is coaxial with the PVC pipe; and the deformation detection mechanism is rotationally arranged on the connecting shaft and is provided with a detection part which extends out in the radial direction of the PVC pipe and abuts against the inner wall of the PVC pipe. The PVC pipe deformation detection device provided by the utility model is provided with the two moving mechanisms which are arranged in the PVC pipe at intervals, so that the PVC pipe deformation detection device can move in the PVC pipe along the axis direction of the PVC pipe; the connecting shaft is arranged and can be connected with the two moving mechanisms respectively, so that the two moving mechanisms move synchronously; the deformation detection mechanism is rotationally arranged on the connecting shaft, the deformation detection mechanism can abut against the inner wall of the PVC pipe through the detection part, the moving mechanism rotates around the connecting shaft in the process of moving in the axis direction of the PVC pipe, and the inner diameter of the PVC pipe is detected through the detection part.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe auxiliary detection, and in particular relates to a PVC pipe deformation detection device. Background Art

[0002] The main component of PVC is polyvinyl chloride, and other ingredients are added to enhance its heat resistance, toughness and ductility. PVC can be divided into soft PVC and hard PVC. Generally speaking, soft PVC can withstand temperatures of 60 degrees, hard PVC can withstand temperatures of 70-90 degrees, and improved PVC can withstand temperatures of 100 degrees.

[0003] In the prior art, PVC pipes are modified to some extent due to different usage environments, and different usage effects are obtained through the modifications. For example, the temperature resistance of PVC pipes is changed to adapt to high temperature environments. However, when improving PVC pipes, after using new materials for improvement, the actual temperature resistance value of the improved PVC pipes cannot be directly obtained. Usually, the temperature resistance value is generally detected by measuring the deformation of the PVC pipe. When it comes to longer PVC pipes, only the outer diameter of the PVC pipe and the inner diameter at both ends of the PVC pipe can be detected. The internal deformation detection of the PVC pipe is relatively difficult, and the measurement effect is poor and the practicality is poor. Utility Model Content

[0004] The embodiment of the utility model provides a PVC pipe deformation detection device, which aims to solve the problem of poor practicability of the existing PVC pipe after improved temperature resistance deformation test due to poor test effect.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a PVC pipe deformation detection device, comprising:

[0006] There are two moving mechanisms, the two moving mechanisms are arranged inside the PVC pipe at intervals, and each of the moving mechanisms has a plurality of walking parts that abut against the inner wall of the PVC pipe;

[0007] A connecting shaft, both ends of which are respectively connected to the two moving mechanisms, and the connecting shaft is coaxially arranged with the PVC pipe under the support of the moving mechanisms;

[0008] The deformation detection mechanism is rotatably arranged on the connecting shaft, and has a detection portion extending radially along the PVC pipe and abutting against the inner wall of the PVC pipe; the deformation detection mechanism is used to rotate around the connecting shaft during the movement of the moving mechanism along the axial direction of the PVC pipe, and detect the inner diameter of the PVC pipe through the detection portion.

[0009] In a possible implementation, each of the moving mechanisms includes:

[0010] A sleeve, used for inserting one end of the connecting shaft;

[0011] A plurality of telescopic structures are provided, wherein the plurality of telescopic structures are fixedly arranged on the sleeve at annular intervals along the axial direction of the sleeve, and the telescopic end of each telescopic structure extends radially along the sleeve;

[0012] There are multiple mobile structures, and the multiple mobile structures are arranged in one-to-one correspondence with the multiple telescopic ends. Each of the mobile structures is fixed on the corresponding telescopic end, and the mobile structure is the walking part.

[0013] In a possible implementation, each of the mobile structures includes:

[0014] A fixed frame, fixedly mounted on the telescopic end;

[0015] There are multiple moving wheels, and the multiple moving wheels are arranged on the fixing frame to rotate at intervals along the axial direction of the PVC pipe; the rotation axis is arranged along a direction perpendicular to the axial direction of the sleeve;

[0016] Among them, one of the moving wheels is a driving wheel, which is used to drive the moving structure to move.

[0017] In a possible implementation, the deformation detection mechanism includes:

[0018] A rotating seat, rotatably arranged on the connecting shaft, wherein the rotating seat is provided with an extending arm extending radially along the rotating shaft;

[0019] An adjusting arm, one end of which is slidably disposed in a sliding cavity disposed on the extending arm, and the other end of which extends radially outwardly along the rotating shaft;

[0020] Damping, arranged on the extension arm, for fixing the sliding position of the adjustment arm;

[0021] A detection unit, arranged on the extended end of the adjustment arm, for recording the deformation of the inner wall of the PVC pipe, the detection unit being the detection part;

[0022] The driving structure is arranged on the rotating seat and is used for driving the rotating seat to rotate on the connecting shaft.

[0023] In a possible implementation, the detection unit includes:

[0024] The detection box body is fixedly mounted on the extended end of the adjustment arm and has a detection cavity open toward the inner wall of the PVC pipe;

[0025] A cover plate, which is arranged on the detection cavity and has a through hole penetrating the cover plate along the radial direction of the PVC pipe;

[0026] An abutment ball is arranged in the detection cavity, is slidably connected with the through hole on the cover plate, and extends out of the through hole on the cover plate to abut against the inner wall of the PVC pipe;

[0027] A fixed plate, fixedly arranged in the detection cavity;

[0028] A spring, one end of which is connected to the fixing plate, and the other end of which abuts against the abutting ball, so as to make the abutting ball always have a tendency to extend toward the inner wall of the PVC pipe and make the abutting ball always abut against the inner wall of the PVC pipe;

[0029] The pressure sensor is arranged on the fixing plate and located in the spring, and has a pressure sensing part that is always in contact with the contact ball, and is used to record when the contact ball bounces due to the deformation of the inner wall of the PVC pipe.

[0030] In a possible implementation manner, the through hole on the cover plate is smaller than the diameter of the abutment ball, and is used to limit the abutment ball.

[0031] In a possible implementation, an inner wall of the through hole on the cover plate is provided with an arc surface adapted to the outer surface of the abutting ball.

[0032] In a possible implementation, the driving structure includes:

[0033] An abutment wheel abuts against the connecting shaft, and its rotation axis is arranged parallel to the axis of the connecting shaft;

[0034] The driving motor is fixed on the rotating seat and has a power output end whose rotating axis is coaxially arranged with the abutment wheel. The power output end is used to drive the abutment wheel to rotate, thereby driving the rotating seat to rotate.

[0035] In a possible implementation manner, the drive motor is a servo motor.

[0036] In this implementation, compared with the prior art, two movable mechanisms are provided at intervals inside the PVC pipe, which can move in the PVC pipe along the axial direction of the PVC pipe through a plurality of walking parts abutting against the inner wall of the PCV pipe; a connecting shaft is provided, which can respectively connect the two movable mechanisms so that the two movable mechanisms move synchronously; a deformation detection mechanism is rotatably provided on the connecting shaft, which can abut against the inner wall of the PVC pipe through the detection part, and rotate around the connecting shaft during the movement of the movable mechanism along the axial direction of the PVC pipe, so that the inner diameter of the PVC pipe is detected by the detection part. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the structure of a PVC pipe deformation detection device provided by an embodiment of the utility model;

[0038] Figure 2 A schematic diagram of the main structure of the PVC pipe deformation detection device provided by the embodiment of the utility model in the PVC pipe;

[0039] Figure 3 A schematic diagram of the side view structure of the PVC pipe deformation detection device provided by the embodiment of the utility model in the PVC pipe;

[0040] Figure 4 A schematic diagram of the internal structure of a detection unit of a PVC pipe deformation detection device provided by an embodiment of the utility model;

[0041] Description of reference numerals:

[0042] 100, moving mechanism; 110, sleeve; 120, telescopic structure; 130, moving structure; 131, fixed frame; 132, moving wheel; 200, connecting shaft; 300, deformation detection mechanism; 310, rotating seat; 311, extension arm; 320, adjustment arm; 330, damping; 340, detection unit; 341, detection box body; 3411, detection cavity; 342, cover plate; 343, abutment ball; 344, fixed plate; 345, spring; 346, pressure sensor; 350, driving structure; 351, abutment wheel; 352, driving motor. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] Please also read Figures 1 to 4 , the PVC pipe deformation detection device provided by the utility model is now described. The PVC pipe deformation detection device includes a moving mechanism 100, a connecting shaft 200 and a deformation detection mechanism 300. There are two moving mechanisms 100, and the two moving mechanisms 100 are arranged at intervals inside the PVC pipe. Each moving mechanism 100 has a plurality of walking parts that abut against the inner wall of the PCV pipe. The two ends of the connecting shaft 200 are respectively connected to the two moving mechanisms 100, and the connecting shaft 200 is coaxially arranged with the PVC pipe under the support of the moving mechanism 100. The deformation detection mechanism 300 is rotatably arranged on the connecting shaft 200, and has a detection part that extends radially along the PVC pipe and abuts against the inner wall of the PVC pipe. The deformation detection mechanism 300 is used to rotate around the connecting shaft 200 when the moving mechanism 100 moves along the axial direction of the PVC pipe, and detect the inner diameter of the PVC pipe through the detection part.

[0045] The working principle of the PVC pipe deformation detection device provided in this embodiment is as follows: first, two moving mechanisms 100 are respectively arranged at both ends of the connecting shaft 200, and then the two moving mechanisms 100 and the connecting shaft 200 are driven by multiple walking parts on each moving mechanism 100 that abut against the inner wall of the PCV pipe to move synchronously in the PCV pipe along the axial direction of the PCV pipe. At the same time, the detection part on the deformation detection mechanism 300 arranged on the connecting shaft 200 rotates around the connecting shaft 200, and the inner diameter of the PVC pipe is detected by the detection part. The detection trajectory can be a spiral detection, or the deformation detection mechanism 300 stops rotating and detection is performed through a straight line trajectory.

[0046] Compared with the prior art, the PVC pipe deformation detection device provided in this embodiment is provided with two movable mechanisms 100 spaced apart inside the PVC pipe, which can move in the PVC pipe along the axial direction of the PVC pipe through a plurality of walking parts abutting against the inner wall of the PCV pipe. A connecting shaft 200 is provided, which can respectively connect the two movable mechanisms 100 so that the two movable mechanisms 100 move synchronously. A deformation detection mechanism 300 is rotatably provided on the connecting shaft 200, which can abut against the inner wall of the PVC pipe through the detection part, and rotate around the connecting shaft 200 during the movement of the movable mechanism 100 along the axial direction of the PVC pipe, and detect the inner diameter of the PVC pipe through the detection part.

[0047] In some embodiments, the moving mechanism 100 may be configured as follows: Figures 1 to 3 See the structure shown. Figures 1 to 3 Each mobile mechanism 100 includes: a sleeve 110, a telescopic structure 120 and a mobile structure 130. The sleeve 110 is used for plugging one end of the connecting shaft 200. There are multiple telescopic structures 120, and the multiple telescopic structures 120 are fixed on the sleeve 110 at annular intervals along the axial direction of the sleeve 110. The telescopic end of each telescopic structure 120 extends radially along the sleeve 110. There are multiple mobile structures 130, and the multiple mobile structures 130 are arranged one by one corresponding to the multiple telescopic ends. Each mobile structure 130 is fixed on the corresponding telescopic end, and the mobile structure 130 is a walking part.

[0048] The sleeve 110 can be inserted into one end of the connecting shaft 200, and can be understood as being detachably connected to the connecting shaft 200. The detachable connection can be a threaded connection or a tongue-and-groove connection. The telescopic structure 120 can be an electric push rod or a motor-driven screw drive. The moving structure 130 can drive the moving mechanism 100 to move along the axis of the PCV pipe.

[0049] In some embodiments, the mobile structure 130 may be configured as follows: Figures 1 to 3 See the structure shown. Figures 1 to 3Each mobile structure 130 includes a fixed frame 131 and a moving wheel 132. The fixed frame 131 is fixed on the telescopic end. A plurality of moving wheels 132 are provided, and the plurality of moving wheels 132 are arranged on the fixed frame 131 in a rotational manner along the axis direction of the PVC pipe. The rotation axis is arranged in a direction perpendicular to the axis direction of the sleeve 110.

[0050] Among them, one of the moving wheels 132 is a driving wheel, which is used to drive the moving structure 130 to move.

[0051] One of the moving wheels 132 is a driving wheel, which can drive the moving structure 130 to move, and the driving wheel can be driven by a driving motor 352 .

[0052] In some embodiments, the deformation detection mechanism 300 may be configured as follows: Figures 1 to 3 See the structure shown. Figures 1 to 3 The deformation detection mechanism 300 includes: a rotating seat 310, an adjusting arm 320, a damping 330, a detection unit 340 and a driving structure 350. The rotating seat 310 is rotatably set on the connecting shaft 200, and the rotating seat 310 is provided with an extension arm 311 extending radially along the rotating shaft. One end of the adjusting arm 320 is slidably set in a sliding cavity set on the extension arm 311, and the other end extends radially outward along the rotating shaft. The damping 330 is set on the extension arm 311 to fix the sliding position of the adjusting arm 320. The detection unit 340 is set on the extending end of the adjusting arm 320, and is used to record the deformation size of the inner wall of the PVC pipe. The detection unit 340 is a detection part. The driving structure 350 is set on the rotating seat 310, and is used to drive the rotating seat 310 to rotate on the connecting shaft 200.

[0053] The driving structure 350 can drive the rotating seat 310 to rotate on the connecting shaft 200, and the adjusting arm 320 connected to the extending arm 311 on the rotating seat 310 extends radially outward along the rotating shaft, and the detection unit 340 set on the extending end of the adjusting arm 320 records the deformation of the inner wall of the PVC pipe. The damping 330 can fix the sliding position of the adjusting arm 320.

[0054] In some embodiments, the detection unit 340 may be implemented as follows: Figure 4 See the structure shown. Figure 4The detection unit 340 includes: a detection box body 341, a cover plate 342, an abutment ball 343, a fixing plate 344, a spring 345 and a pressure sensor 346. The detection box body 341 is fixed on the protruding end of the adjustment arm 320, and has a detection cavity 3411 open to the inner wall of the PVC pipe. The cover plate 342 is covered on the detection cavity 3411, and has a through hole that penetrates the cover plate 342 along the radial direction of the PVC pipe. The abutment ball 343 is arranged in the detection cavity 3411, and is slidably connected with the through hole on the cover plate 342, and extends out of the through hole on the cover plate 342 to abut against the inner wall of the PVC pipe. The fixing plate 344 is fixed in the detection cavity 3411. One end of the spring 345 is connected to the fixed plate 344, and the other end is abutted against the abutting ball 343, so that the abutting ball 343 always has a tendency to extend toward the inner wall of the PVC pipe and always abuts against the inner wall of the PVC pipe. The pressure sensor 346 is arranged on the fixed plate 344 and located in the spring 345. It has a pressure sensing part that always abuts against the abutting ball 343, and is used to record the data when the abutting ball 343 bounces due to the deformation of the inner wall of the PVC pipe.

[0055] The pressure sensor 346 is a device or apparatus that can sense pressure signals and convert the pressure signals into usable output electrical signals according to certain rules. The pressure sensor 346 is a prior art and will not be described in detail here.

[0056] The pressure sensor 346 is provided with a matching data processor, which can record the detection data.

[0057] In some embodiments, the cover plate 342 may be formed as follows: Figure 4 See the structure shown. Figure 4 The through hole on the cover plate 342 is smaller than the diameter of the abutting ball 343 and is used to limit the abutting ball 343 .

[0058] In some embodiments, the cover plate 342 may be formed as follows: Figure 4 See the structure shown. Figure 4 The inner wall of the through hole on the cover plate 342 is provided with an arc surface adapted to the outer surface of the abutting ball 343 .

[0059] In some embodiments, the driving structure 350 may be configured as follows: Figures 1 to 3 See the structure shown. Figures 1 to 3 The driving structure 350 includes: an abutting wheel 351 and a driving motor 352. The abutting wheel 351 abuts against the connecting shaft 200, and the rotation axis is arranged parallel to the axis of the connecting shaft 200. The driving motor 352 is fixed on the rotating seat 310, and has a power output end whose rotation axis is coaxially arranged with the abutting wheel 351. The power output end is used to drive the abutting wheel 351 to rotate, thereby driving the rotating seat 310 to rotate.

[0060] In some embodiments, the drive motor 352 may be configured as follows: Figures 1 to 3 See the structure shown. Figures 1 to 3 , the driving motor 352 is a servo motor.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. PVC pipe deformation detection device, characterized in that: include: There are two moving mechanisms, the two moving mechanisms are arranged inside the PVC pipe at intervals, and each of the moving mechanisms has a plurality of walking parts that abut against the inner wall of the PVC pipe; A connecting shaft, both ends of which are respectively connected to the two moving mechanisms, and the connecting shaft is coaxially arranged with the PVC pipe under the support of the moving mechanisms; The deformation detection mechanism is rotatably arranged on the connecting shaft, and has a detection portion extending radially along the PVC pipe and abutting against the inner wall of the PVC pipe; the deformation detection mechanism is used to rotate around the connecting shaft during the movement of the moving mechanism along the axial direction of the PVC pipe, and detect the inner diameter of the PVC pipe through the detection portion.

2. The PVC pipe deformation detection device according to claim 1, characterized in that: Each of the moving mechanisms comprises: A sleeve, used for inserting one end of the connecting shaft; A plurality of telescopic structures are provided, wherein the plurality of telescopic structures are fixedly arranged on the sleeve at annular intervals along the axial direction of the sleeve, and the telescopic end of each telescopic structure extends radially along the sleeve; There are multiple mobile structures, and the multiple mobile structures are arranged in one-to-one correspondence with the multiple telescopic ends. Each of the mobile structures is fixed on the corresponding telescopic end, and the mobile structure is the walking part.

3. The PVC pipe deformation detection device according to claim 2, characterized in that: Each of the mobile structures comprises: A fixed frame, fixedly mounted on the telescopic end; There are multiple moving wheels, and the multiple moving wheels are arranged on the fixing frame to rotate at intervals along the axial direction of the PVC pipe; the rotation axis is arranged along a direction perpendicular to the axial direction of the sleeve; Among them, one of the moving wheels is a driving wheel, which is used to drive the moving structure to move.

4. The PVC pipe deformation detection device according to claim 1, characterized in that: The deformation detection mechanism comprises: A rotating seat, rotatably arranged on the connecting shaft, wherein the rotating seat is provided with an extending arm extending radially along the rotating shaft; An adjusting arm, one end of which is slidably disposed in a sliding cavity disposed on the extending arm, and the other end of which extends radially outwardly along the rotating shaft; Damping, arranged on the extension arm, for fixing the sliding position of the adjustment arm; A detection unit, arranged on the extended end of the adjustment arm, for recording the deformation of the inner wall of the PVC pipe, the detection unit being the detection part; The driving structure is arranged on the rotating seat and is used for driving the rotating seat to rotate on the connecting shaft.

5. The PVC pipe deformation detection device according to claim 4, characterized in that: The detection unit comprises: The detection box body is fixedly mounted on the extended end of the adjustment arm and has a detection cavity open toward the inner wall of the PVC pipe; A cover plate, which is arranged on the detection cavity and has a through hole penetrating the cover plate along the radial direction of the PVC pipe; An abutment ball is arranged in the detection cavity, is slidably connected with the through hole on the cover plate, and extends out of the through hole on the cover plate to abut against the inner wall of the PVC pipe; A fixed plate, fixedly arranged in the detection cavity; A spring, one end of which is connected to the fixing plate, and the other end of which abuts against the abutting ball, so as to make the abutting ball always have a tendency to extend toward the inner wall of the PVC pipe and make the abutting ball always abut against the inner wall of the PVC pipe; The pressure sensor is arranged on the fixing plate and located in the spring, and has a pressure sensing part that is always in contact with the contact ball, and is used to record when the contact ball bounces due to the deformation of the inner wall of the PVC pipe.

6. The PVC pipe deformation detection device according to claim 5, characterized in that: The through hole on the cover plate is smaller than the diameter of the abutment ball and is used to limit the abutment ball.

7. The PVC pipe deformation detection device according to claim 5, characterized in that: The inner wall of the through hole on the cover plate is provided with an arc surface adapted to the outer surface of the abutting ball.

8. The PVC pipe deformation detection device according to claim 4, characterized in that: The driving structure comprises: An abutment wheel abuts against the connecting shaft, and its rotation axis is arranged parallel to the axis of the connecting shaft; The driving motor is fixed on the rotating seat and has a power output end whose rotating axis is coaxially arranged with the abutment wheel. The power output end is used to drive the abutment wheel to rotate, thereby driving the rotating seat to rotate.

9. The PVC pipe deformation detection device according to claim 8, characterized in that: The driving motor is a servo motor.

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