A shockwave balloon testing device and method

Abstract

The present application belongs to the field of shock wave balloon testing, and discloses a shock wave balloon testing device and a testing method. The shock wave balloon testing device comprises a support seat, a balloon clamping mechanism, a rotating mechanism and a plurality of sound pressure testing mechanisms. The balloon clamping mechanism is arranged on the support seat in a height direction of the support seat and is liftable. The balloon clamping mechanism is used for clamping a balloon. The axial direction of the balloon is parallel to the height direction of the support seat. The rotating mechanism is movably arranged on the support seat and is rotatable along the circumferential direction of the balloon. The plurality of sound pressure testing mechanisms are movably arranged on the rotating mechanism. The plurality of sound pressure testing mechanisms are arranged around the balloon in the circumferential direction of the balloon and are movable in the radial direction of the balloon, and are used for testing the sound pressure outside the balloon. The present application not only meets the testing requirements of the shock wave balloon, but also improves the testing efficiency and the testing accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shock wave balloon testing, and in particular to a shock wave balloon testing device and testing method. BACKGROUND

[0002] Cardiovascular disease has always been one of the important factors of death in the world population. In the past half century, with the development of medical knowledge and medical technology, the mortality rate of cardiovascular disease has been greatly reduced. Among them, balloon dilatation angioplasty has played an important role in reducing the incidence and death of obstructive tubular arterial disease. Traditional catheter intervention therapy technology usually uses percutaneous transluminal angioplasty (PTA) to open calcified lesions in arterial and venous vessels until the calcified lesions are broken; however, these treatment methods have obvious defects, such as the occurrence of vascular intimal tear during the process of balloon dilatation and stent implantation, which usually causes vascular endothelial hyperplasia, produces restenosis risk, and causes vascular injury and complications.

[0003] In order to solve this problem, some companies have proposed applying liquid-electric effect lithotripsy technology in angioplasty (such as patent application number: 201880040835.6), the basic principle of which is to apply a certain high-voltage electric field to the liquid, and the liquid generates cavitation under the action of the electric field. The gas bubbles generated by cavitation collapse instantaneously, generating a shock wave, thereby achieving the purpose of breaking calcified lesion tissue without damaging the vascular intima.

[0004] The existing shock wave balloon has been applied to the fields of peripheral, coronary heart disease, and valve. At present, when the shock force of the balloon is tested, the balloon is placed in a water tank, and then a hydrophone is used to measure the sound pressure at different positions along the radial direction of the balloon and the sound pressure at different positions in the circumferential direction of the balloon in the water tank. Finally, the shock force of the balloon is measured by the sound pressure. During the test, the distance between the hydrophone and the balloon needs to be measured manually with a ruler, so the test accuracy is low. At the same time, when the hydrophone is used to measure the shock force at different positions in the circumferential direction of the balloon, the measurement efficiency is low. SUMMARY

[0005] The purpose of the present application is to provide a shock wave balloon testing device and testing method, which can improve the test efficiency and improve the test accuracy.

[0006] The technical solutions provided by the present application are as follows:

[0007] On the one hand, a shock wave balloon testing device is provided, comprising:

[0008] a support seat;

[0009] A balloon clamping mechanism is arranged on the support seat in a height direction of the support seat, and is used for clamping a balloon, an axial direction of the balloon being parallel to the height direction of the support seat;

[0010] A rotating mechanism is movably arranged on the support seat and is rotatable in a circumferential direction of the balloon;

[0011] A plurality of sound pressure testing mechanisms are movably arranged on the rotating mechanism respectively, the plurality of sound pressure testing mechanisms are arranged on the balloon in the circumferential direction of the balloon and are movable in a radial direction of the balloon, and are used for testing sound pressure outside the balloon.

[0012] In some embodiments, the balloon clamping mechanism comprises a lifting servo motor, a mounting member and a clamping member, the lifting servo motor is fixedly arranged on the support seat; the lifting servo motor is connected with the mounting member and is used for driving the mounting member to lift; and the clamping member is arranged on the mounting member and is used for clamping a balloon.

[0013] In some embodiments, the clamping member comprises an upper clamping member and a lower clamping member, one end of the upper clamping member is connected with an upper portion of the mounting member, the other end of the upper clamping member is provided with an upper clamping head, one end of the lower clamping member is connected with a lower portion of the mounting member, and the other end of the lower clamping member is provided with a lower clamping head.

[0014] In some embodiments, the rotating mechanism comprises a rotating member, a large gear, a rotating servo motor and a small gear, the rotating member is rotatably arranged on the support seat in the circumferential direction of the balloon, the large gear is fixedly connected with the rotating member, the rotating servo motor is arranged on the support seat, the rotating servo motor is connected with the small gear and is used for driving the small gear to rotate, the small gear is engaged with the large gear and is used for driving the large gear to rotate, the number of teeth of the large gear is greater than the number of teeth of the small gear, and the plurality of sound pressure testing mechanisms are arranged on the large gear respectively.

[0015] In some embodiments, the rotating member comprises a rotating platform and a support column, the rotating platform is rotatably arranged on the support seat in the circumferential direction of the balloon, the support column is arranged on the rotating platform, the large gear is fixedly arranged on the support column, and the support column is a hollow structure and the sidewall is provided with an opening.

[0016] In some embodiments, the rotating platform comprises a first platform and a second platform, the first platform is rotatably arranged on the support seat in the circumferential direction of the balloon, the second platform is arranged on the first platform and is connected with the first platform through a leveling bolt, is used for adjusting the perpendicularity of the large gear and the axial direction of the balloon, and the support column is arranged on the second platform.

[0017] In some embodiments, the rotating mechanism further comprises a top cover and a plurality of supports, the plurality of supports are respectively arranged on the large gear, the top cover is arranged on the plurality of supports, the sound pressure testing mechanism is arranged between the large gear and the top cover, and a through hole for the balloon to pass through is arranged in the middle of the top cover.

[0018] In some embodiments, the sound pressure testing mechanism comprises a moving part, a moving servo motor and a sound pressure sensor, the moving part is movably arranged on the rotating mechanism, the moving servo motor is arranged on the rotating mechanism and connected with the moving part, for driving the moving part to move along the radial direction of the balloon, and the sound pressure sensor is arranged on the moving part and located on the side of the moving part close to the balloon.

[0019] In some embodiments, the sound pressure testing mechanism further comprises a stroke sensor, the stroke sensor is arranged on the moving part and located on the side of the moving part close to the balloon, and the sound pressure sensor is arranged on the end of the stroke sensor away from the moving part.

[0020] In another aspect, a test method of the shock wave balloon testing device is also provided, the shock wave balloon testing device is the shock wave balloon testing device of any one of the above-mentioned embodiments, and the test method comprises:

[0021] S1, clamping the balloon on the balloon clamping mechanism, and adjusting the height of the balloon to the test starting position by the balloon clamping mechanism;

[0022] S2, the sound pressure testing mechanism moves along the radial direction of the balloon, and measures the sound pressure at different distances from the first target test point of the balloon by the sound pressure testing mechanism until the radial sound pressure test of the first target test point is completed;

[0023] S3, the rotating mechanism rotates, so that the plurality of sound pressure testing mechanisms correspond to a plurality of second target test points of the balloon along the circumferential direction respectively;

[0024] S4, the sound pressure testing mechanism moves along the radial direction of the balloon, and measures the sound pressure at different distances from the second target test point of the balloon by the sound pressure testing mechanism until the radial sound pressure test of the second target test point is completed;

[0025] S5, the rotating mechanism continues to rotate until the circumferential sound pressure test of the balloon is completed;

[0026] S6, the balloon clamping mechanism adjusts the height of the balloon, and repeats the above steps S2 to S5 until the axial sound pressure test of the balloon is completed.

[0027] The technical effect of the present application is that:

[0028] (1) By setting a plurality of sound pressure test mechanisms, and the plurality of sound pressure test mechanisms are arranged along the circumference of the balloon, so that the sound pressure at different positions of the circumference of the balloon can be tested at the same time, the efficiency can be greatly improved, and the test speed is 6-10 times that of the existing test method; the sound pressure test mechanism is movable along the radial direction of the balloon, and by controlling the movement amount of the sound pressure test mechanism, the sound pressure at different positions of the balloon can be accurately tested, and the test precision is high; in addition, through the cooperation of the balloon clamping mechanism, the rotating mechanism and the sound pressure test mechanism, the sound pressure of the three-dimensional space of the balloon can be accurately tested to meet the test requirements of the shock wave balloon.

[0029] (2) The rotating mechanism can rotate 360°, and the rotation is controlled by a servo motor, and the precision can reach ≤1um, and all settings can be completed by the upper computer control system, improving the test precision.

[0030] (3) The Z-axis can be controlled to move by a servo motor, and is suitable for both short coronary shock wave balloons and long peripheral balloons, and has a wide application range.

[0031] (4) A travel sensor is arranged to control the radial 0 point, and the entire space field test is more accurate.

[0032] (5) The stepping amount of the servo motor can be accurately controlled, the control system automatically generates a three-dimensional test field model, and for some abnormal points, the test system repeatedly tests multiple times through coordinate capture, reducing the probability of test errors. BRIEF DESCRIPTION OF DRAWINGS

[0033] The application will be further described in detail below in combination with the drawings and specific embodiments:

[0034] Figure 1 is a structural schematic view of a shock wave balloon test device provided by the specific embodiments of the application;

[0035] Figure 2 is Figure 1 is an enlarged view of A in figure 1;

[0036] Figure 3 is a structural schematic view of a shock wave balloon test device and a control system connection provided by the specific embodiments of the application;

[0037] Figure 4 is a structural schematic view of a balloon clamping mechanism provided by the specific embodiments of the application;

[0038] Figure 5 is a top view of a sound pressure test mechanism provided by the specific embodiments of the application.

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 10, support seat; 11, bottom plate; 12, stand; 20, balloon clamping mechanism; 21, lifting servo motor; 22, mounting piece; 23, clamping piece; 231, upper clamping piece; 2311, upper collet; 232, lower clamping piece; 2321, lower collet; 30, rotating mechanism; 31, rotating piece; 311, rotating platform; 3111, first platform; 3112, second platform; 312, support column; 3121, opening; 32, large gear; 33, rotating servo motor; 34, small gear; 35, top cover; 351, through hole; 36, support piece; 40, sound pressure test mechanism; 41, moving piece; 42, moving servo motor; 43, sound pressure sensor; 44, travel sensor; 51, balloon; 52, catheter; 60, transmission cable; 70, control system. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0042] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0043] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0044] In this paper, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.

[0046] In one embodiment of the present application, as shown in Figure 1 and Figure 2 An impact wave balloon testing device includes a support base 10, a balloon clamping mechanism 20, a rotating mechanism 30, and a plurality of sound pressure testing mechanisms 40. The balloon clamping mechanism 20 is arranged on the support base 10 in a height direction of the support base 10 and is used to clamp a balloon 51. The balloon 51 is parallel to the height direction of the support base 10 in an axial direction. The rotating mechanism 30 is movably arranged on the support base 10 and is rotatable in a circumferential direction of the balloon 51. The plurality of sound pressure testing mechanisms 40 are movably arranged on the rotating mechanism 30, are arranged at intervals around the balloon 51 in the circumferential direction of the balloon 51, and are movable in a radial direction of the balloon 51, and are used to test sound pressure outside the balloon 51.

[0047] Specifically, the support base 10 mainly serves as a support function and is used to support the entire impact wave balloon testing device. The shape of the support base 10 can be adaptively adjusted according to the structure of the entire impact wave balloon testing device. For example, as shown in Figure 1 the support base 10 can include a bottom plate 11 and a stand 12 arranged on the bottom plate 11. The balloon clamping mechanism 20 is arranged on the stand 12 and is movable in a height direction of the stand 12. The rotating mechanism 30 is arranged on the bottom plate 11 of the support base 10. Figure 1 The support base 10 is only an example, and the support base 10 can also have other structures as long as it can support the impact wave balloon testing device. Preferably, a plurality of leveling bolts can be arranged at the bottom of the support base 10. The levelness of the support base 10 and the entire impact wave balloon testing device can be adjusted by adjusting the leveling bolts.

[0048] The balloon clamping mechanism 20 is used to clamp the balloon 51. In the present embodiment, the balloon 51 is an impact wave balloon. When the balloon clamping mechanism 20 is raised or lowered, the balloon 51 is raised or lowered along the axial direction of the balloon 51. The plurality of sound pressure testing mechanisms 40 are arranged on the rotating mechanism 30 and are arranged in the circumferential direction of the balloon 51. When the rotating mechanism 30 rotates, the plurality of sound pressure testing mechanisms 40 rotate in the circumferential direction of the balloon 51, so that the sound pressure testing mechanisms 40 can test the sound pressure at different positions in the circumferential direction of the balloon 51. The number of the sound pressure testing mechanisms 40 can be set according to actual use requirements, and the number of the sound pressure testing mechanisms 40 is not limited in the present embodiment. The sound pressure testing mechanisms 40 are movable in the radial direction of the balloon 51 on the rotating mechanism 30, so that the sound pressure testing mechanisms 40 can test the sound pressure at different distances from the balloon 51 in the radial direction of the balloon 51. In addition, when the balloon clamping mechanism 20 raises or lowers the balloon 51, the sound pressure testing mechanisms 40 can test the sound pressure at different heights in the axial direction of the balloon 51.

[0049] The application is provided with multiple sound pressure testing mechanisms 40, which are arranged along the circumference of the balloon 51, so that the sound pressure at different positions of the balloon 51 can be tested at the same time, improving the testing efficiency; the sound pressure testing mechanism 40 is movable along the radial direction of the balloon 51, and by controlling the movement amount of the sound pressure testing mechanism 40, the sound pressure at different positions of the balloon 51 can be accurately tested, improving the testing accuracy; in addition, through the cooperation of the balloon clamping mechanism 20, the rotating mechanism 30 and the sound pressure testing mechanism 40, the sound pressure in the three-dimensional space of the balloon 51 can be accurately tested, meeting the testing requirements of the balloon 51.

[0050] As shown in Figure 3 , the shock wave balloon testing device is in communication connection with the control system 70 through the transmission cable 60, the control system 70 can control the working of the balloon clamping mechanism 20, the rotating mechanism 30 and the sound pressure testing mechanism 40, and the data tested by the sound pressure testing mechanism 40 can be transmitted to the control system 70, a three-dimensional test field model is generated through the control system 70, and some abnormal points in the three-dimensional test field model can be retested through coordinates, reducing the probability of testing errors and improving the testing accuracy.

[0051] In some embodiments, as shown in Figure 1 , the balloon clamping mechanism 20 includes a lifting servo motor 21, a mounting piece 22 and a clamping piece 23, and the lifting servo motor 21 is fixedly arranged on the support seat 10; the lifting servo motor 21 is connected with the mounting piece 22, and the lifting servo motor 21 is used to drive the mounting piece 22 to lift; the clamping piece 23 is arranged on the mounting piece 22 and is used to clamp the balloon 51.

[0052] The lifting servo motor 21 is fixedly arranged on the column 12 of the support seat 10, the lifting servo motor 21 drives the mounting piece 22 to move up and down along the height direction of the column 12, and when the mounting piece 22 moves up and down, the clamping piece 23 moves up and down together, and then the balloon 51 on the clamping piece 23 moves up and down along the height direction of the column 12. The control accuracy of the lifting servo motor 21 is ≤1um.

[0053] As shown in Figure 4 , the clamping piece 23 includes an upper clamping piece 231 and a lower clamping piece 232, one end of the upper clamping piece 231 is connected with the upper part of the mounting piece 22, the other end of the upper clamping piece 231 is provided with an upper chuck 2311, one end of the lower clamping piece 232 is connected with the lower part of the mounting piece 22, and the other end of the lower clamping piece 232 is provided with a lower chuck 2321.

[0054] The balloon 51 is generally delivered into the human body through the catheter 52, so the balloon 51 is arranged on the catheter 52, when the balloon 51 is clamped by the upper clamp head 2311 and the lower clamp head 2321, the upper clamp head 2311 and the lower clamp head 2321 can be clamped on the catheter 52 respectively, that is, the upper clamp head 2311 is clamped on the catheter 52 located at one side of the top end of the balloon 51, and the lower clamp head 2321 is clamped on the catheter 52 located at one side of the bottom end of the balloon 51, thereby realizing clamping the balloon 51 on the catheter 52 on the balloon clamping mechanism 20, the upper clamp head 2311 and the lower clamp head 2321 can play a role in fixing the balloon 51 in the axial and radial directions.

[0055] In the embodiment, the upper clamp head 2311 can be a structure in which a claw and a nut are matched, a plurality of openings are arranged at the end of the claw in the circumferential direction, the openings extend in the axial direction of the claw, when the nut is not arranged on the claw, the diameter of the claw can be increased under the action of the openings to allow the catheter 52 to pass through, after the nut is locked on the claw, the diameter of the claw is reduced and the catheter 52 is locked in the claw, thereby realizing fixing the catheter 52. The lower clamp head 2321 can have the same structure as the upper clamp head 2311. It should be noted that the upper clamp head 2311 and the lower clamp head 2321 of the embodiment can also be other existing clamp head structures, as long as they can realize clamping and fixing the catheter 52. In addition, in order to improve the clamping force on the balloon 51, more than three clamping points can be arranged on the catheter 52, and more than three clamps can be used to clamp the catheter 52.

[0056] In some embodiments, as shown in Figure 1 and Figure 2 The rotating mechanism 30 includes a rotating piece 31, a large gear 32, a rotating servo motor 33 and a small gear 34, the rotating piece 31 is rotatably arranged on the support seat 10 in the circumferential direction of the balloon 51, the large gear 32 is fixedly connected with the rotating piece 31, the rotating servo motor 33 is arranged on the support seat 10, the rotating servo motor 33 is connected with the small gear 34 and is used to drive the small gear 34 to rotate, the small gear 34 is engaged with the large gear 32 and is used to drive the large gear 32 to rotate, the number of teeth of the large gear 32 is greater than the number of teeth of the small gear 34; a plurality of sound pressure test mechanisms 40 are arranged on the large gear 32.

[0057] Specifically, as shown in Figure 1As shown, the rotary servo motor 33 is arranged on the support base 10, the power shaft of the rotary servo motor 33 is rotatably connected with the support base 10 through a bearing, the pinion 34 is fixedly arranged on the power shaft of the rotary servo motor 33, the power shaft drives the pinion 34 to rotate when rotating, the pinion 34 drives the gear wheel 32 to rotate when rotating, the gear wheel 32 drives the sound pressure testing mechanism 40 on the gear wheel 32 to rotate along the circumference of the balloon 51. For example, the rotary servo motor 33 has an accuracy of ≤1um, the gear wheel 32 has a module of 1-10 and an accuracy level of ≤3, the pinion 34 has a module of 1-5 and an accuracy level of ≤3, and the gear wheel 32 and the pinion 34 have a meshing ratio of ≥2. Through the meshing of the gear wheel 32 and the pinion 34, the rotating speed of the gear wheel 32 can be adjusted.

[0058] As shown in Figure 1 and Figure 2 , the rotating part 31 comprises a rotating platform 311 and a support column 312, the rotating platform 311 is rotatably arranged on the support base 10 along the circumference of the balloon 51, and the support column 312 is arranged on the rotating platform 311. The gear wheel 32 is fixedly arranged on the support column 312, the support column 312 has a hollow structure and the side wall is provided with an opening 3121.

[0059] The rotating platform 311 is rotatable relative to the support base 10, the support column 312 is fixedly installed on the rotating platform 311, and the gear wheel 32 is fixedly installed on the support column 312. When the pinion 34 rotates, it drives the gear wheel 32, the support column 312 and the rotating platform 311 to rotate together relative to the support base 10. The support column 312 has a hollow structure and the side wall is provided with an opening 3121. When the upper clamping part 231 and the lower clamping part 232 of the balloon clamping mechanism 20 clamp the balloon 51, the lower clamping part 232 can extend into the support column 312 from the opening 3121 of the support column 312 to clamp the balloon 51 located between the plurality of sound pressure testing mechanisms 40. As shown in Figure 2 and Figure 4 , the upper clamping part 231 and the lower clamping part 232 are Z-shaped respectively, so that the upper clamping part 231 and the lower clamping part 232 can avoid the rotating mechanism 30.

[0060] As shown in Figure 1 , the rotating platform 311 comprises a first platform 3111 and a second platform 3112, the first platform 3111 is rotatably arranged on the support base 10 along the circumference of the balloon 51, and the second platform 3112 is arranged on the first platform 3111 and connected with the first platform 3111 through a leveling bolt, used for adjusting the perpendicularity of the gear wheel 32 and the balloon 51 in the axial direction, and the support column 312 is arranged on the second platform 3112.

[0061] The second platform 3112 is connected with the first platform 3111 through the leveling bolts, so that the inclination angle of the second platform 3112 relative to the first platform 3111 is adjustable, so as to adjust the axial perpendicularity of the large gear 32 relative to the balloon 51, and then achieve the purpose of adjusting the axial perpendicularity of the sound pressure sensor 43 of the sound pressure testing mechanism 40 on the large gear 32 relative to the balloon 51, so that the sound pressure sensor 43 on the sound pressure testing mechanism 40 keeps vertical to the balloon 51 in the axial direction, thereby improving the testing accuracy.

[0062] As shown in Figure 2 , the rotating mechanism 30 further comprises a top cover 35 and a plurality of supports 36, the plurality of supports 36 are respectively arranged on the large gear 32, and the top cover 35 is arranged on the plurality of supports 36. The sound pressure testing mechanism 40 is arranged between the large gear 32 and the top cover 35, and the top cover 35 is provided with a through hole 351 for the balloon 51 to pass through.

[0063] The top cover 35 is fixed on the large gear 32 through the plurality of supports 36, and the top cover 35 is provided with the through hole 351. The upper clamping piece 231 of the balloon clamping mechanism 20 can pass through the through hole 351 to clamp the balloon 51 located between the plurality of sound pressure testing mechanisms 40, thereby realizing the clamping of the balloon 51 between the plurality of sound pressure testing mechanisms 40 by the balloon clamping mechanism 20, and the balloon clamping mechanism 20 can also drive the balloon 51 to move up and down between the plurality of sound pressure sensors 43.

[0064] In some embodiments, as shown in Figure 2 and Figure 5 , the sound pressure testing mechanism 40 comprises a moving piece 41, a moving servo motor 42 and a sound pressure sensor 43. The moving piece 41 is movably arranged on the rotating mechanism 30. The moving servo motor 42 is arranged on the rotating mechanism 30 and connected with the moving piece 41, and is used to drive the moving piece 41 to move along the radial direction of the balloon 51. The sound pressure sensor 43 is arranged on the moving piece 41 and located on the side of the moving piece 41 close to the balloon 51.

[0065] For example, as shown in Figure 2 , the moving servo motor 42 is arranged on the top cover 35 of the rotating mechanism 30. The moving servo motor 42 drives the moving piece 41 to move along the radial direction of the balloon 51, so that the sound pressure sensor 43 moves along the radial direction of the balloon 51 to approach or move away from the balloon 51, thereby the sound pressure at different positions of the balloon 51 can be tested. The moving servo motor 42 can control the moving precision of the moving piece 41, and the control precision of the moving servo motor 42 is ≤1um, which can improve the testing accuracy. In actual testing, a plurality of moving servo motors 42 simultaneously control the corresponding moving pieces 41 to move. After the moving piece 41 moves to the required testing position, the sound pressure at different circumferential positions of the balloon 51 is tested by the sound pressure sensors 43 on the plurality of moving pieces 41, thereby improving the testing efficiency.

[0066] Preferably, asFigure 4 As shown, the sound pressure testing mechanism 40 further comprises a stroke sensor 44, which is arranged on the moving member 41 and located on the side of the moving member 41 close to the balloon 51, and the sound pressure sensor 43 is arranged on the end of the stroke sensor 44 away from the moving member 41.

[0067] The stroke sensor 44 is mainly used to find the 0 point position of the surface of the balloon 51 (i.e. the radial test starting point position), and the position where the stroke sensor 44 contacts the surface of the balloon 51 is the 0 point position of the surface of the balloon, and after the stroke sensor 44 captures the 0 point position of the surface of the balloon 51, the sound pressure at different distances from the 0 point position of the balloon 51 is tested along the radial direction of the balloon 51. After adjusting the height of the balloon 51 each time, the stroke sensor 44 needs to be brought into contact with the surface of the balloon 51 and the contact point is taken as the 0 point position of the surface of the balloon 51, and then the moving member 41 is moved along the radial direction of the balloon 51 according to the radial step amount based on the 0 point position, so that the sound pressure sensor 43 on the stroke sensor 44 tests the sound pressure at different distances from the 0 point position of the balloon 51. Similarly, after the rotating mechanism 30 drives the sound pressure testing mechanism 40 to rotate along the circumference of the balloon 51, the 0 point position also needs to be found first, and then the sound pressure at different positions of the balloon 51 is tested.

[0068] In this embodiment, when the radial sound pressure test is performed, the 0 point position of the surface of the balloon 51 is found first, and then the distance of each sound pressure testing point from the 0 point position of the surface of the balloon 51 is accurately controlled by controlling the moving distance of the moving servo motor 43, so as to improve the test accuracy.

[0069] The application further provides an embodiment of a test method of the shock wave balloon testing device, which comprises:

[0070] S1 clamping the balloon on the balloon clamping mechanism and adjusting the height of the balloon to the test starting point position by the balloon clamping mechanism;

[0071] S2 moving the sound pressure testing mechanism along the radial direction of the balloon and measuring the sound pressure at different distances from the first target testing point of the balloon by the sound pressure testing mechanism until the radial sound pressure test of the first target testing point is completed;

[0072] S3 rotating the rotating mechanism so that the plurality of sound pressure testing mechanisms correspond to a plurality of second target testing points of the balloon along the circumference, respectively;

[0073] S4 moving the sound pressure testing mechanism along the radial direction of the balloon and measuring the sound pressure at different distances from the second target testing point of the balloon by the sound pressure testing mechanism until the radial sound pressure test of the second target testing point is completed;

[0074] S5 continuing to rotate the rotating mechanism until the circumferential sound pressure test of the balloon is completed;

[0075] S6 The balloon clamping mechanism adjusts the height of the balloon, and the above steps S2 to S5 are repeated until the axial sound pressure test of the balloon is completed.

[0076] Specifically, before the test, the balloon is clamped on the balloon clamping mechanism, and then the preparation work before the test is carried out. The preparation work includes inputting the working range of the balloon in the control system, i.e. inputting the length and diameter of the balloon, so that the control system automatically generates a three-dimensional model of the balloon according to the length and diameter of the balloon, and then manually or automatically adjusting the Z-axis (balloon height direction) test 0 point position (i.e. the starting point position of the Z-axis test), and then setting the Z-axis, radial and circumferential step sizes according to the test needs, and then selecting the number of sound pressure test mechanisms participating in the test according to the needs, and then starting the test work.

[0077] During the test, the height of the balloon is first adjusted by the balloon clamping mechanism so that the sound pressure test mechanism is just located at the starting point position of the test along the Z-axis direction (the height direction of the balloon). At this time, each of the plurality of sound pressure test mechanisms corresponds to a test point on the surface of the balloon. For ease of description, this test point is defined as the first target test point. When testing the sound pressure at different positions from the first target test point along the radial direction, the travel sensor of the sound pressure test mechanism is first brought into contact with the first target test point, so that the travel sensor finds the starting point position (i.e. the 0 point position) of the radial test, and then tests the sound pressure at different positions from the first target test point outwardly based on the starting point as the base point, so as to complete the radial sound pressure test at different positions from the first target test point.

[0078] After completing the radial sound pressure test of the first target test point, the rotating mechanism rotates to drive the plurality of sound pressure test mechanisms to rotate along the circumference of the balloon, so that each of the plurality of sound pressure test mechanisms corresponds to another test point on the balloon. For ease of description, this another test point is defined as the second target test point, and then the radial sound pressure test of the second target test point is completed by the sound pressure test mechanism.

[0079] The rotating mechanism continues to rotate to enable the sound pressure test mechanism to complete the sound pressure test of other target test points on the balloon, until the sound pressure test of all test points on the balloon along the circumferential direction is completed. Then the balloon clamping mechanism is raised or lowered to adjust the height of the balloon corresponding to the sound pressure test mechanism, and the above steps S2 to S5 are repeated until the axial sound pressure test of the balloon is completed. During the test, the test can be performed from the top end to the bottom end of the balloon, or from the bottom end to the top end of the balloon.

[0080] After all the points in the three-dimensional space are tested, the test data can be transmitted to the control system, and the control system automatically generates a three-dimensional test field model, and can repeatedly test a plurality of times for some abnormal points to reduce the probability of test errors and improve the test precision.

[0081] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as falling within the protection scope of the present application.

Claims

1. A shock wave balloon testing device, characterized in that, include: Support base; A balloon clamping mechanism is vertically and flexibly disposed on the support base along the height direction of the support base. The balloon clamping mechanism is used to clamp the balloon, and the axial direction of the balloon is parallel to the height direction of the support base. A rotating mechanism is movably mounted on the support base and rotatable along the circumference of the balloon. Multiple sound pressure testing mechanisms are movably mounted on the rotating mechanism. The multiple sound pressure testing mechanisms are spaced apart around the balloon along the circumference of the balloon and are movable along the radial direction of the balloon, and are used to test the sound pressure on the outside of the balloon. The balloon clamping mechanism includes a lifting servo motor, a mounting component, and a clamping component. The lifting servo motor is fixedly mounted on the support base. The lifting servo motor is connected to the mounting component and is used to drive the mounting component to lift and lower. The clamping component is mounted on the mounting component and is used to clamp the balloon. The sound pressure testing mechanism includes a moving component, a moving servo motor, and a sound pressure sensor. The moving component is movably mounted on the rotating mechanism. The moving servo motor is mounted on the rotating mechanism and connected to the moving component, and is used to drive the moving component to move radially along the balloon. The sound pressure sensor is mounted on the moving component and located on the side of the moving component closer to the balloon.

2. The shock wave balloon testing device according to claim 1, characterized in that, The clamping member includes an upper clamping member and a lower clamping member. One end of the upper clamping member is connected to the upper part of the mounting member, and the other end of the upper clamping member is provided with an upper chuck. One end of the lower clamping member is connected to the lower part of the mounting member, and the other end of the lower clamping member is provided with a lower chuck.

3. The shock wave balloon testing device according to claim 1, characterized in that, The rotating mechanism includes a rotating component, a large gear, a rotary servo motor, and a small gear. The rotating component is rotatably mounted on the support base along the circumference of the balloon. The large gear is fixedly connected to the rotating component. The rotary servo motor is mounted on the support base and connected to the small gear to drive the small gear to rotate. The small gear meshes with the large gear to drive the large gear to rotate. The number of teeth on the large gear is greater than the number of teeth on the small gear. Multiple sound pressure testing mechanisms are respectively mounted on the large gear.

4. The shock wave balloon testing device according to claim 3, characterized in that, The rotating component includes a rotating platform and a support column. The rotating platform is rotatably mounted on the support base along the circumference of the balloon. The support column is mounted on the rotating platform. The large gear is fixedly mounted on the support column. The support column has a hollow structure and an opening on its side wall.

5. The shock wave balloon testing device according to claim 4, characterized in that, The rotating platform includes a first platform and a second platform. The first platform is rotatably mounted on the support base along the circumference of the balloon. The second platform is mounted on the first platform and connected to the first platform by a leveling bolt, used to adjust the perpendicularity of the large gear to the axial direction of the balloon. The support column shown is mounted on the second platform.

6. The shock wave balloon testing device according to claim 4, characterized in that, The rotating mechanism also includes a top cover and multiple support members. The multiple support members are respectively disposed on the large gear, and the top cover is disposed on the multiple support members. The sound pressure testing mechanism is disposed between the large gear and the top cover. The top cover has a through hole in the middle for the balloon to pass through.

7. The shock wave balloon testing device according to claim 1, characterized in that, The sound pressure testing mechanism also includes a travel sensor, which is disposed on the moving part and located on the side of the moving part closer to the balloon, while the sound pressure sensor is disposed at the end of the travel sensor away from the moving part.

8. A test method for a shock wave balloon testing device, characterized in that, The shockwave balloon testing device is the shockwave balloon testing device according to any one of claims 1-7, and the testing method includes: S1 clamps the balloon onto the balloon clamping mechanism and adjusts the balloon height to the test starting position through the balloon clamping mechanism; The S2 sound pressure testing mechanism moves radially along the balloon and measures the sound pressure at different distances from the first target test point of the balloon until the radial sound pressure test of the first target test point is completed. The S3 rotating mechanism rotates, causing multiple sound pressure testing mechanisms to correspond to multiple second target testing points along the circumference of the balloon. The S4 sound pressure testing mechanism moves radially along the balloon and measures the sound pressure at different distances from the second target test point of the balloon until the radial sound pressure test of the second target test point is completed. The S5 rotating mechanism continues to rotate until the circumferential sound pressure test of the balloon is completed. The S6 balloon clamping mechanism adjusts the height of the balloon by raising and lowering it, and repeats steps S2 to S5 until the axial sound pressure test of the balloon is completed.

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