A pipe diameter deformation measuring device and a measuring method thereof

Abstract

The present invention discloses a pipe diameter deformation measuring device and a measuring method thereof, and relates to the technical field of pipe diameter deformation measuring devices. A working plate, a measuring device, wherein the measuring device is located above the working plate, and the measuring device comprises two movable blocks, two data monitoring devices, two second drive motors, and a detection circle, wherein the inner wall of the detection circle is fixedly provided with a drive track, and the outer wall of the drive track is provided with a track groove. The measuring device is driven to slide on the reciprocating screw and the connecting screw by starting the first drive motor, and when the measuring device slides, the ball bearings arranged inside the detection circle slide on the outer wall of the test tube, and when encountering a depression on the outer wall of the test tube, the data monitoring device senses the sliding distance of the induction plate inside the induction tube to record the deformation data of the depression, and the measuring device continues to move forward, and the ball bearings at the end of the induction rod slide in the depression, and as the depression distance decreases, the induction rod squeezes the induction spring and contracts back into the induction tube.

Description

Technical Field

[0001] The invention relates to the technical field of pipe diameter deformation measuring devices, and in particular to a pipe diameter deformation measuring device and a measuring method thereof. Background Art

[0002] In modern industry and infrastructure construction, pipeline systems play a vital role and are widely used in many fields such as petroleum, natural gas, chemical industry, water conservancy, urban water supply and drainage, etc. As the use time of pipelines increases and the influence of environmental factors, the outer wall of the pipeline may suffer from corrosion, wear, deformation and other problems. There is no detection and monitoring device for the deformation state of the pipeline in the existing technology. When the outer wall of the pipeline suffers from wear and deformation, it will not only affect the normal operation of the pipeline, but also may cause safety accidents, resulting in huge economic losses and casualties. Summary of the invention

[0003] The purpose of the present invention is to provide a pipe diameter deformation measuring device and a measuring method thereof, which solve the technical problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipe diameter deformation measuring device, comprising a working plate and a measuring device, wherein the measuring device is located above the working plate, the measuring device comprises two movable blocks, two data monitoring devices, two second driving motors, and a detection circle, the inner wall of the detection circle is fixedly provided with a driving track, the outer wall of the driving track is provided with a track groove, the outer wall of the driving track is slidably provided with a driving block, one side outer wall of the driving block is provided with a driving groove, the driving groove is adapted to the driving track, the inner wall of the driving block is fixedly provided with a sensing cylinder, the bottom of the inner wall of the sensing cylinder is fixedly provided with a sensing spring, the outer wall of the other end of the sensing spring is fixedly provided with a sensing plate, the sensing plate is located inside the sensing cylinder, the sensing plate slides on the inner wall of the sensing cylinder, the outer wall of the other side of the sensing plate is fixedly provided with a sensing rod, the outer wall of one end of the sensing rod away from the sensing cylinder is provided with a rod groove, the inner wall of the rod groove is fixedly provided with a retaining ring, and the inner wall of the rod groove is rotatably provided with a ball.

[0005] Preferably, two pairs of clamping devices are fixedly provided on the top outer wall of the working plate, and the two pairs of clamping devices each include a cylinder, a fixing rod is fixedly provided between each of the cylinders and the working plate, a connecting plate is fixedly provided on the output end of each of the cylinders, an elastic sealing frame and an elastic spring are fixedly provided on the outer wall of each of the connecting plates away from the cylinder, a contact plate is fixedly provided on the outer wall of each of the elastic sealing frame and the elastic spring away from the connecting plate, and the elastic spring is located inside the elastic sealing frame.

[0006] Preferably, a first drive motor is fixedly provided on an outer wall of one side of the working plate, a reciprocating screw is fixedly provided on the output end of the first drive motor, a connecting screw is fixedly provided on the inner wall of the working plate, the reciprocating screw and the connecting screw are respectively slidably plugged into the corresponding movable blocks, the reciprocating screw is threadedly plugged into the through hole of the outer wall of one of the movable blocks, and the connecting screw is threadedly plugged into the through hole of the outer wall of the other movable block.

[0007] Preferably, two fixed brackets are fixedly provided on the inner wall of the working plate, and a sliding groove is provided on the outer wall of each of the fixed brackets. Slide blocks are fixedly provided on the outer walls on the opposite sides of the two movable blocks, and each of the slide grooves corresponds to a corresponding slide block, and the slide block is located inside the corresponding slide groove, and the slide block slides inside the corresponding slide groove.

[0008] Preferably, support columns are fixedly provided at the four corners of the working plate, and a handle is fixedly provided on the outer wall of each support column.

[0009] Preferably, two support plates are fixedly provided on the top outer wall of the working plate, and the two support plates are respectively located between each pair of clamping devices. A test tube is provided on the top of the two support plates, and the test tube is located inside the detection circle.

[0010] Preferably, outer walls of the two movable blocks are provided with through holes.

[0011] Preferably, each of the second drive motors is fixedly connected to a corresponding data monitoring device, each of the data monitoring devices is fixedly connected to a corresponding movable block, and an output end of each of the second drive motors is electrically connected to a drive track.

[0012] Preferably, the diameter of the retaining ring is smaller than the diameter of the ball, and the ball is matched with the rod groove.

[0013] A pipe diameter deformation measuring device and a measuring method thereof:

[0014] S1: First, place the test tube to be tested on the top of the support plate, start the cylinders set on both sides of the support plate, and the cylinders on both sides drive the corresponding contact plates to approach each other. The contact plates on both sides are close to the test tube and fit the test tube. To ensure the stability of the test tube, the contact plates set on both sides continue to move toward the middle and fit the test tube completely, increasing the friction between the test tube and the test tube. After the contact plates on both sides squeeze the test tube, the contact plates set on both sides are completely fitted with the test tube and are subjected to the reaction force of the test tube, thereby squeezing the elastic sealing frame and the elastic spring, effectively ensuring the test stability of the test tube, and also ensuring the safety of the test tube;

[0015] S2: The test tube passes through the inner wall of the detection circle, and the first drive motor is started to drive the measuring device to slide on the reciprocating screw and the connecting screw. When the measuring device slides, the ball bearing arranged inside the detection circle slides on the outer wall of the test tube. Since the outer wall of the test tube is uneven, when encountering a concave part of the outer wall of the test tube, the sensing rod extends into the concave part under the elastic action of the sensing spring, and the sensing plate between the sensing rod and the sensing spring slides inside the sensing tube. The data monitoring device is electrically connected to the sensing tube, and the data monitoring device senses the sliding distance of the sensing plate inside the sensing tube to record the deformation data of the concave part. The measuring device continues to move forward, and the ball bearing at the end of the sensing rod slides in the concave part. As the concave distance decreases, the sensing rod squeezes the sensing spring and shrinks back into the sensing tube. When encountering a convex part of the outer wall of the test tube, the sensing rod squeezes the sensing spring and continues to shrink toward the inside of the sensing tube as the protrusion amplitude increases. The set data monitoring device senses the sliding distance of the sensing plate inside the sensing tube to record the deformation data of the convex part.

[0016] S3: starting the second driving motor provided on the outer wall of the detection circle, so that the driving track provided on the inner wall of the detection circle is energized, and the driving track is energized to drive the driving block to slide on the driving track, and as the driving block slides, the ball at the end of the sensing rod is driven to move in a circular motion on the outer wall of the test tube, so that the measuring device can measure the deformation of any surface of the test tube;

[0017] Compared with the related art, the pipe diameter deformation measuring device and the measuring method provided by the present invention have the following beneficial effects:

[0018] 1. The present invention provides a pipe diameter deformation measuring device and a measuring method thereof. The test pipe passes through the inner wall of the detection ring, and the first driving motor is started to drive the measuring device to slide on the reciprocating screw and the connecting screw. When the measuring device slides, the ball arranged inside the detection ring slides on the outer wall of the test pipe. Since the outer wall of the test pipe is uneven, when encountering a concave part of the outer wall of the test pipe, the sensing rod extends into the concave part under the elastic action of the sensing spring, and the sensing plate between the sensing rod and the sensing spring slides inside the sensing tube. The data monitoring device is electrically connected to the sensing tube, and the data monitoring device senses the sliding distance of the sensing plate inside the sensing tube to record the deformation data of the concave part. The measuring device continues to move forward, and the ball at the end of the sensing rod slides in the concave part. As the concave distance decreases, the sensing rod squeezes the sensing spring and shrinks back into the sensing tube. When encountering a convex part of the outer wall of the test pipe, the sensing rod squeezes the sensing spring to continuously shrink into the sensing tube as the protrusion amplitude increases. The set data monitoring device senses the sliding distance of the sensing plate inside the sensing tube to record the deformation data of the convex part.

[0019] 2. The present invention provides a pipe diameter deformation measuring device and a measuring method thereof. By starting the cylinders arranged on both sides of the support plate, the cylinders on both sides drive the corresponding contact plates to approach each other, and the contact plates on both sides approach the test tube and fit the test tube. To ensure the stability of the test tube, the contact plates arranged on both sides continue to move toward the middle and fit the test tube completely, thereby increasing the friction between the contact plates and the test tube. After the contact plates on both sides squeeze the test tube, the contact plates arranged on both sides are completely fitted with the test tube and are subjected to the reaction force of the test tube, thereby squeezing the elastic sealing frame and the elastic spring, effectively ensuring the test stability of the test tube, and also ensuring the safety of the test tube.

[0020] 3. The present invention provides a pipe diameter deformation measuring device and a measuring method thereof. By starting a second driving motor arranged on the outer wall of the detection circle, a driving track arranged on the inner wall of the detection circle is energized. The energization of the driving track drives a driving block to slide on the driving track. As the driving block slides, the ball at the end of the sensing rod is driven to move in a circular motion on the outer wall of the test tube, so that the measuring device can measure the deformation of any surface of the test tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a structural schematic diagram of the fixing bracket of the present invention;

[0023] Figure 3 This is a structural schematic diagram of the first driving motor of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the measuring device of the present invention;

[0025] Figure 5 It is an exploded view of a part of the structure of the measuring device of the present invention;

[0026] Figure 6 For the present invention Figure 5 A magnified view of the structure at center;

[0027] Figure 7 It is a partial structural cross-sectional view of the driving block of the present invention;

[0028] Figure 8 It is an exploded view of the partial structure of the driving block of the present invention;

[0029] Fig. 9 For the present invention Figure 7 A magnified view of the structure at B in the middle;

[0030] Fig.10 For the present invention Figure 8 A magnified view of the structure at C in the middle;

[0031] Fig.11It is a structural schematic diagram of the clamping device of the present invention;

[0032] Fig.12 It is a partial structural exploded view of the clamping device of the present invention;

[0033] Fig.13 For the present invention Fig.12 Enlarged view of the structure at point D in the middle.

[0034] In the figure: 1. working plate; 101. supporting column; 102. lifting handle; 2. fixing bracket; 201. sliding groove; 3. first driving motor; 301. reciprocating screw rod; 4. measuring device; 401. movable block; 402. through hole; 403. sliding block; 404. data monitoring device; 405. second driving motor; 406. detection circle; 407. driving track; 408. track groove; 409. driving block; 410. driving groove; 411. induction cylinder; 412. induction spring; 413. induction plate; 414. induction rod; 415. rod groove; 416. retaining ring; 417. ball; 5. clamping device; 501. fixing rod; 502. cylinder; 503. connecting plate; 504. elastic sealing frame; 505. contact plate; 506. elastic spring; 6. supporting plate; 7. test tube. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Example: See Figure 1-Figure 13The present invention provides a technical solution: a pipe diameter deformation measuring device, comprising a working plate 1 and a measuring device 4, wherein the measuring device 4 is located above the working plate 1, and comprises two movable blocks 401, two data monitoring devices 404, two second driving motors 405, and a detection circle 406, wherein a driving track 407 is fixedly arranged on the inner wall of the detection circle 406, a track groove 408 is provided on the outer wall of the driving track 407, a driving block 409 is slidably arranged on the outer wall of the driving track 407, a driving groove 410 is provided on one side of the outer wall of the driving block 409, and the driving groove 410 is adapted to the driving track 407, a sensing cylinder 411 is fixedly arranged on the inner wall of the driving block 409, and a sensing spring 412 is fixedly arranged on the bottom of the inner wall of the sensing cylinder 411, and the sensing spring An induction plate 413 is fixedly provided on the outer wall of the other end of 412, and the induction plate 413 is located inside the induction tube 411. The induction plate 413 slides on the inner wall of the induction tube 411. An induction rod 414 is fixedly provided on the outer wall of the other side of the induction plate 413. A rod groove 415 is provided on the outer wall of the end of the induction rod 414 away from the induction tube 411. A retaining ring 416 is fixedly provided on the inner wall of the rod groove 415. A ball 417 is rotatably provided on the inner wall of the rod groove 415. A first driving motor 3 is fixedly provided on the outer wall of one side of the working plate 1. A reciprocating screw 301 is fixedly provided on the output end of the first driving motor 3. A connecting screw is fixedly provided on the inner wall of the working plate 1. The reciprocating screw 301 and the connecting screw are respectively slidably plugged with the corresponding movable blocks 401, and the reciprocating screw 301 is connected to one of them. The through hole 402 on the outer wall of one movable block 401 is threadedly inserted, and the connecting screw is threadedly inserted with the through hole 402 on the outer wall of another movable block 401. Two fixed brackets 2 are fixedly arranged on the inner wall of the working plate 1. A slide groove 201 is opened on the outer wall of each fixed bracket 2. Slide blocks 403 are fixedly arranged on the outer walls on the opposite sides of the two movable blocks 401. Each slide groove 201 corresponds to the corresponding slide block 403 respectively. The slide block 403 is located inside the corresponding slide groove 201, and the slide block 403 slides inside the corresponding slide groove 201. Support columns 101 are fixedly arranged at the four corners of the working plate 1. A handle 102 is fixedly arranged on the outer wall of each support column 101. Two support plates 6 are fixedly arranged on the top outer wall of the working plate 1. The two support plates 6 are respectively located on each pair of Between the clamping devices 5, a test tube 7 is arranged on the top of the two support plates 6, and the test tube 7 is located inside the detection circle 406. The outer walls of the two movable blocks 401 are provided with through holes 402. Each second drive motor 405 is fixedly connected to the corresponding data monitoring device 404, and each data monitoring device 404 is fixedly connected to the corresponding movable block 401. The output end of each second drive motor 405 is electrically connected to the drive track 407. The diameter of the retaining ring 416 is smaller than the diameter of the ball 417, and the ball 417 is adapted to the rod groove 415. Two pairs of clamping devices 5 are fixedly arranged on the top outer wall of the working plate 1. The two pairs of clamping devices 5 include cylinders 502, and a fixed rod 501 is fixedly arranged between each cylinder 502 and the working plate 1.A connecting plate 503 is fixedly provided at the output end of each cylinder 502, an elastic sealing frame 504 and an elastic spring 506 are fixedly provided on the outer wall of each connecting plate 503 away from the cylinder 502, and a resisting plate 505 is fixedly provided on the outer wall of each elastic sealing frame 504 and elastic spring 506 away from the connecting plate 503, and the elastic spring 506 is located inside the elastic sealing frame 504.

[0037] A pipe diameter deformation measuring device and a measuring method thereof:

[0038] S1: First, place the test tube 7 to be tested on the top of the support plate 6, start the cylinders 502 set on both sides of the support plate 6, and the cylinders 502 on both sides drive the corresponding contact plates 505 to approach each other. The contact plates 505 on both sides are close to the test tube 7 and fit the test tube 7. To ensure the stability of the test tube 7, the contact plates 505 set on both sides continue to move toward the middle and fit the test tube 7 completely, thereby increasing the friction between the test tube 7 and the test tube 7. After the contact plates 505 on both sides squeeze the test tube 7, the contact plates 505 set on both sides are completely fitted with the test tube 7 and are subjected to the reaction force of the test tube 7, thereby squeezing the elastic sealing frame 504 and the elastic spring 506, effectively ensuring the test stability of the test tube 7, and also ensuring the safety of the test tube 7;

[0039] S2: the test tube 7 passes through the inner wall of the detection circle 406, and the first drive motor 3 is started to drive the measuring device 4 to slide on the reciprocating screw 301 and the connecting screw. When the measuring device 4 slides, the ball 417 arranged inside the detection circle 406 slides on the outer wall of the test tube 7. Since the outer wall of the test tube 7 is uneven, when encountering a concave part of the outer wall of the test tube 7, the sensing rod 414 extends into the concave part under the elastic action of the sensing spring 412, and the sensing plate 413 between the sensing rod 414 and the sensing spring 412 slides inside the sensing tube 411. The data monitoring device 404 is electrically connected to the sensing tube 411, and the data monitoring device 404 senses The sensing plate 413 slides in the sensing tube 411 to record the deformation data of the depression. The measuring device 4 continues to move forward, and the ball 417 at the end of the sensing rod 414 slides in the depression. As the distance of the depression decreases, the sensing rod 414 squeezes the sensing spring 412 and retracts it back into the sensing tube 411. When the sensing rod 414 encounters the protrusion of the outer wall of the test tube 7, the sensing rod 414 squeezes the sensing spring 412 and continues to retract into the sensing tube 411 as the amplitude of the protrusion increases. The data monitoring device 404 senses the sliding distance of the sensing plate 413 in the sensing tube 411 to record the deformation data of the protrusion.

[0040] S3: Start the second driving motor 405 provided on the outer wall of the detection circle 406, so that the driving track 407 provided on the inner wall of the detection circle 406 is energized. The driving track 407 is energized to drive the driving block 409 to slide on the driving track 407. As the driving block 409 slides, the ball 417 at the end of the sensing rod 414 moves in a circular motion on the outer wall of the test tube 7, so that the measuring device 4 can perform deformation measurement on any surface of the test tube 7.

[0041] Working principle: first, place the test tube 7 to be tested on the top of the support plate 6, start the cylinders 502 set on both sides of the support plate 6, and the cylinders 502 on both sides drive the corresponding contact plates 505 to approach each other, and the contact plates 505 on both sides are close to the test tube 7 and fit the test tube 7. To ensure the stability of the test tube 7, the contact plates 505 set on both sides continue to move toward the middle and fit completely with the test tube 7 to increase the friction between the test tube 7. After the contact plates 505 on both sides squeeze the test tube 7, the contact plates 505 set on both sides are completely fitted with the test tube 7 and are subjected to the reaction force of the test tube 7, thereby squeezing the elastic sealing frame 504 and the elastic spring 506, effectively ensuring the test of the test tube 7. The stability of the test is ensured, and the safety of the test tube 7 is also ensured. The test tube 7 passes through the inner wall of the detection circle 406, and the first drive motor 3 is started to drive the measuring device 4 to slide on the reciprocating screw 301 and the connecting screw. When the measuring device 4 slides, the ball 417 arranged inside the detection circle 406 slides on the outer wall of the test tube 7. Since the outer wall of the test tube 7 is uneven, when encountering a concave part of the outer wall of the test tube 7, the sensing rod 414 extends into the concave part under the elastic action of the sensing spring 412, and the sensing plate 413 between the sensing rod 414 and the sensing spring 412 slides inside the sensing tube 411. The data monitoring device 404 is electrically connected to the sensing tube 411, and the data monitoring device 404 senses that the sensing plate 413 is The sliding distance inside the sensing tube 411 is used to record the deformation data of the depression. The measuring device 4 continues to move forward, and the ball 417 at the end of the sensing rod 414 slides in the depression. As the distance of the depression decreases, the sensing rod 414 squeezes the sensing spring 412 and retracts it back into the sensing tube 411. When the sensing rod 414 encounters the protrusion on the outer wall of the test tube 7, the protrusion amplitude increases, and the sensing rod 414 squeezes the sensing spring 412 and continues to retract into the sensing tube 411. The data monitoring device 404 senses the sliding distance of the sensing plate 413 inside the sensing tube 411 to record the deformation data of the protrusion, and starts the second driving motor 405 provided on the outer wall of the detection circle 406, so that the detection circle 406 The driving track 407 arranged on the inner wall is energized, and the driving track 407 is energized to drive the driving block 409 to slide on the driving track 407. As the driving block 409 slides, it drives the ball 417 at the end of the sensing rod 414 to move in a circular motion on the outer wall of the test tube 7, so that the measuring device 4 can perform deformation measurement on any surface of the test tube 7. By arranging two fixed brackets 2 in the middle of the working plate 1, grooves 201 are opened on the outer walls of both sides of the fixed brackets 2, and sliders 403 are fixedly arranged on the outer walls of the movable blocks 401 on both sides of the measuring device 4. The first driving motor 3 is started to drive the slider 403 to slide inside the groove 201. The fixed brackets 2 are arranged to ensure the stability of the measuring device 4.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe diameter deformation measuring device, comprising a working plate (1) and a measuring device (4), characterized in that: The measuring device (4) is located above the working plate (1), and comprises two movable blocks (401), two data monitoring devices (404), two second drive motors (405), and a detection circle (406). A drive track (407) is fixedly arranged on the inner wall of the detection circle (406), a track groove (408) is provided on the outer wall of the drive track (407), a drive block (409) is slidably arranged on the outer wall of the drive track (407), a drive groove (410) is provided on one side of the outer wall of the drive block (409), the drive groove (410) is adapted to the drive track (407), and the inner wall of the drive block (409) is fixedly arranged A sensing tube (411) is provided, wherein a sensing spring (412) is fixedly provided at the bottom of the inner wall of the sensing tube (411), a sensing plate (413) is fixedly provided on the outer wall of the other end of the sensing spring (412), the sensing plate (413) is located inside the sensing tube (411), the sensing plate (413) slides on the inner wall of the sensing tube (411), a sensing rod (414) is fixedly provided on the outer wall of the other side of the sensing plate (413), a rod groove (415) is provided on the outer wall of one end of the sensing rod (414) away from the sensing tube (411), a retaining ring (416) is fixedly provided on the inner wall of the rod groove (415), and a ball (417) is rotatably provided on the inner wall of the rod groove (415); Two pairs of clamping devices (5) are fixedly arranged on the top outer wall of the working plate (1), and the two pairs of clamping devices (5) each include a cylinder (502), a fixing rod (501) is fixedly arranged between each of the cylinders (502) and the working plate (1), a connecting plate (503) is fixedly arranged on the output end of each of the cylinders (502), an elastic sealing frame (504) and an elastic spring (506) are fixedly arranged on the outer wall of each of the connecting plates (503) away from the cylinder (502), and a resisting plate (505) is fixedly arranged on the outer wall of each of the elastic sealing frames (504) and the elastic spring (506) away from the connecting plate (503), and the elastic spring (506) is located inside the elastic sealing frame (504); A first drive motor (3) is fixedly provided on an outer wall of one side of the working plate (1); a reciprocating screw (301) is fixedly provided on an output end of the first drive motor (3); a connecting screw is fixedly provided on an inner wall of the working plate (1); the reciprocating screw (301) and the connecting screw are respectively slidably plugged into corresponding movable blocks (401); the reciprocating screw (301) is threadedly plugged into a through hole (402) on the outer wall of one of the movable blocks (401); and the connecting screw is threadedly plugged into a through hole (402) on the outer wall of another movable block (401); Two fixed brackets (2) are fixedly arranged on the inner wall of the working plate (1), and a slide groove (201) is provided on the outer wall of each fixed bracket (2). A slider (403) is fixedly arranged on the outer wall of the two movable blocks (401) on the opposite side, and each slide groove (201) corresponds to a corresponding slider (403). The slider (403) is located inside the corresponding slide groove (201), and the slider (403) slides inside the corresponding slide groove (201); Support columns (101) are fixedly provided at the four corners of the working plate (1), and a handle (102) is fixedly provided on the outer wall of each support column (101); Two support plates (6) are fixedly arranged on the top outer wall of the working plate (1), the two support plates (6) are respectively located between each pair of clamping devices (5), and a test tube (7) is arranged on the top of the two support plates (6), and the test tube (7) is located inside the detection circle (406); The measuring method for the pipe diameter deformation measuring device comprises the following steps: S1: First, a test tube (7) to be tested is placed on the top of the support plate (6), and the cylinders (502) arranged on both sides of the support plate (6) are started. The cylinders (502) on both sides drive the corresponding contact plates (505) to approach each other. The contact plates (505) on both sides approach the test tube (7) and fit with the test tube (7). To ensure the stability of the test tube (7), the contact plates (505) arranged on both sides continue to move toward the middle and fit with the test tube (7) completely, thereby increasing the friction between the contact plates (505) and the test tube (7). After the contact plates (505) on both sides squeeze the test tube (7), the contact plates (505) arranged on both sides completely fit with the test tube (7) and are subjected to the reaction force of the test tube (7), thereby squeezing the elastic sealing frame (504) and the elastic spring (506), thereby effectively ensuring the test stability of the test tube (7) and also ensuring the safety of the test tube (7); S2: The test tube (7) passes through the inner wall of the detection ring (406), and the first drive motor (3) is started to drive the measuring device (4) to slide on the reciprocating screw (301) and the connecting screw. When the measuring device (4) slides, the ball (417) arranged inside the detection ring (406) slides on the outer wall of the test tube (7). Since the outer wall of the test tube (7) is uneven, when encountering a concave part of the outer wall of the test tube (7), the sensing rod (414) extends into the concave part under the elastic action of the sensing spring (412), and the sensing plate (413) between the sensing rod (414) and the sensing spring (412) slides inside the sensing tube (411). The data monitoring device (404) is electrically connected to the sensing tube (411), and the data monitoring device (404) is electrically connected to the sensing tube (411). 4) sensing the sliding distance of the sensing plate (413) inside the sensing tube (411) to record the deformation data of the depression, the measuring device (4) continues to move forward, the ball (417) at the end of the sensing rod (414) slides in the depression, and as the distance of the depression decreases, the sensing rod (414) squeezes the sensing spring (412) and shrinks back into the sensing tube (411). When the sensing rod (414) encounters a protrusion on the outer wall of the test tube (7), as the amplitude of the protrusion increases, the sensing rod (414) squeezes the sensing spring (412) and continues to shrink toward the inside of the sensing tube (411), and the data monitoring device (404) senses the sliding distance of the sensing plate (413) inside the sensing tube (411) to record the deformation data of the protrusion; S3: starting a second driving motor (405) disposed on the outer wall of the detection circle (406) so that a driving track (407) disposed on the inner wall of the detection circle (406) is energized. The energized driving track (407) drives a driving block (409) to slide on the driving track (407). As the driving block (409) slides, the ball (417) at the end of the sensing rod (414) is driven to move in a circular motion on the outer wall of the test tube (7), so that the measuring device (4) can perform deformation measurement on any surface of the test tube (7).

2. A pipe diameter deformation measuring device according to claim 1, characterized in that: The outer walls of the two movable blocks (401) are both provided with through holes (402).

3. A pipe diameter deformation measuring device according to claim 1, characterized in that: Each of the second drive motors (405) is fixedly connected to a corresponding data monitoring device (404), each of the data monitoring devices (404) is fixedly connected to a corresponding movable block (401), and an output end of each of the second drive motors (405) is electrically connected to a drive track (407).

4. A pipe diameter deformation measuring device according to claim 1, characterized in that: The diameter of the retaining ring (416) is smaller than the diameter of the ball (417), and the ball (417) is matched with the rod groove (415).

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