A stepwise ultrasonic scanning device

Abstract

The application discloses a kind of progressive ultrasonic scanning devices, it includes: probe module;Drive part;Transmission part is connected between drive part and probe module;Transmission part includes propulsion module and recovery module, propulsion module includes installation base plate, main fixed plate, propulsion clamping block, propulsion roller, propulsion roller mounting plate, propulsion band clamping plate, propulsion synchronous belt, slider guide rail assembly, upper extension plate, driven portion driven linear movement drive plate, propulsion clamping block is fixed on main fixed plate, propulsion clamping plate is fixed on upper extension plate, propulsion roller mounting plate is fixed on drive plate, propulsion roller is installed on propulsion roller mounting plate, propulsion synchronous belt both ends are clamped by propulsion clamping block and propulsion band clamping plate respectively, while passing around propulsion roller.The transmission part of the application is compact in structure, can drive probe module to move with larger stroke, can meet the actual demand according to site, increase transmission number to increase movement range, and the site working condition with larger movement range.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power plant testing equipment, and specifically relates to a progressive ultrasonic scanning device. Background Technology

[0002] The space for the weld seam of the lower end cap of the pressurizer in a nuclear power plant is relatively small, but the weld seam that needs to be scanned is relatively long. The probe needs to make a long travel distance in the narrow space. Therefore, the traveling mechanism of the scanning device needs to have a long guiding mechanism. However, the traveling mechanism is too long to be arranged in a narrow space, which makes it difficult to realize automated ultrasonic scanning. Summary of the Invention

[0003] The purpose of this invention is to provide a progressive ultrasonic scanning device that occupies less installation space and has a larger range of motion.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a progressive ultrasonic scanning device, comprising: a probe module; a driving unit for providing power to the device; and a transmission unit connected between the driving unit and the probe module; the transmission unit includes a propulsion module and a retrieval module, the propulsion module including a mounting base plate, a main fixing plate, a propulsion clamping block, a propulsion roller, a propulsion roller mounting plate, a propulsion belt clamping plate, a propulsion synchronous belt, a slider guide rail assembly, an upper extension plate, and a driving plate that is driven linearly by the driven unit; the propulsion clamping block is fixed to the main fixing plate, the propulsion belt clamping plate is fixed to the upper extension plate, the propulsion roller mounting plate is fixed to the driving plate, and the propulsion roller is mounted on the propulsion roller. On the mounting plate, both ends of the push synchronous belt are clamped by the push clamping block and the push belt clamping plate respectively, and pass around the push roller; the recycling module includes a recycling roller fixing plate, a recycling roller, a recycling synchronous belt, a recycling belt clamping plate, a side fixing plate, and a recycling clamping block. The recycling roller fixing plate is fixed on the drive plate, the recycling roller is fixed on the recycling roller fixing plate, the recycling belt clamping plate is fixed on the upper extension plate, and the recycling clamping block is fixed on the side fixing plate. Both ends of the recycling synchronous belt are clamped by the recycling belt clamping plate and the recycling clamping block respectively and pass around the recycling roller. The main fixing plate and the side fixing plate are arranged parallel to each other. The main fixing plate is fixed on the mounting base plate, and the side fixing plate is fixed on the drive plate.

[0005] In another embodiment, the slider guide rail assembly includes an upper slider guide rail module disposed between the upper protruding plate and the drive plate, and a lower slider guide rail module connected between the drive plate and the mounting base plate.

[0006] In another embodiment, the drive unit includes a motor, a motor support plate, a synchronous belt, a synchronous pulley, a gear, and a rack. The motor drives the small pulley of the synchronous pulley to rotate. The motor support plate is arranged parallel to and directly opposite the main fixed plate. The motor support plate is fixed to the mounting base plate. The small pulley drives the large pulley to rotate via the synchronous belt. The large pulley is connected to the drive gear via a transmission shaft. The gear meshes with the rack. When the gear rotates, it drives the rack to move linearly. The rack is rigidly connected to the drive plate. When the rack moves, it drives the drive plate to move linearly.

[0007] In another embodiment, the probe module includes a probe base plate, a probe holder slidably connected to the probe base plate in a direction perpendicular to the mounting base plate or in an oblique direction, a probe mounted on the probe holder, and an elastic element that causes the probe to always have a tendency to move vertically upward or obliquely upward.

[0008] In another embodiment, a probe frame rotatably connected to the probe frame is mounted on the probe holder, the probe is fixed on the probe frame, and the rotation axis of the probe frame is parallel to the upper extension plate.

[0009] In another embodiment, the probe module includes a slider fixed to the probe base plate, a slide rail fixedly connected to the probe frame and slidably connected to the slider, and an elastic element connected between the slide rail and the probe base plate.

[0010] In another embodiment, the elastic element is a constant force spring, and the probe module includes a spring fixing plate fixedly connected to the lower end of the slide rail. The main body of the constant force spring is rotatably connected to the spring fixing plate, and the end of the spring plate of the constant force spring is fixed to the probe base plate. The connection between the end of the spring plate of the constant force spring and the probe base plate is higher than the rotation axis of the main body of the constant force spring.

[0011] The beneficial effects of the present invention are as follows: The transmission part of the present invention has a compact structure, which can drive the probe module to move a large stroke. It can meet the needs of the actual field conditions by increasing the number of transmission stages to increase the range of motion and the field conditions with a large range of motion. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the drive unit and transmission unit of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of the present invention after removing the upper protruding plate and the driving part and the transmission part;

[0015] Figure 4This is a schematic diagram of the probe module of the present invention;

[0016] Figure 5 This is a schematic diagram of the transmission part of the present invention when the upper extension plate is not extended;

[0017] Figure 6 This is a schematic diagram of the transmission part when the upper extension plate of the present invention extends;

[0018] Figure 7 This is a schematic diagram of the transmission part of the present invention at another angle when the upper extension plate is extended;

[0019] Figure 8 This is a schematic diagram of the transmission part from another angle when the upper extension plate of the present invention is not extended. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0021] like Figure 1-3 As shown, the progressive ultrasonic scanning device includes: a probe module; a drive unit 1, which provides power to the device; and a transmission unit 2, which connects the drive unit and the probe module; the transmission unit includes a propulsion module and a retrieval module.

[0022] The propulsion module includes a mounting base plate 215, a main fixing plate 21, a propulsion clamping block 22, a propulsion roller 23, a propulsion roller mounting plate 24, a propulsion belt clamping plate 25, a propulsion timing belt 26, a slider guide rail assembly 27, an upper extension plate 214, and a drive plate 20 that is driven to move linearly. The propulsion clamping block 22 is fixed on the main fixing plate 21, the propulsion belt clamping plate 25 is fixed on the upper extension plate 214, the propulsion roller mounting plate 24 is fixed on the drive plate 17, the propulsion roller 23 is mounted on the propulsion roller mounting plate 24, and the two ends of the propulsion timing belt 26 are clamped by the propulsion clamping block 22 and the propulsion belt clamping plate 25 respectively, while passing around the propulsion roller 23.

[0023] The recycling module includes a recycling roller fixing plate 28, a recycling roller 29, a recycling timing belt 210, a recycling belt clamping plate 211, a side fixing plate 212, and a recycling clamping block 213. The recycling roller fixing plate 28 is fixed on the drive plate 20, the recycling roller 29 is fixed on the recycling roller fixing plate 28, the recycling belt clamping plate 211 is fixed on the upper extension plate 214, and the recycling clamping block 213 is fixed on the side fixing plate 212. The two ends of the recycling timing belt 210 are clamped 22 by the recycling belt clamping plate 211 and the recycling clamping block 213 respectively and pass around the recycling roller 29. The main fixing plate 21 and the side fixing plate 212 are arranged in parallel. The main fixing plate 21 is fixed on the mounting base plate 215, and the side fixing plate 212 is fixed on the drive plate 20. The slider guide rail assembly 27 includes an upper slider guide rail module 271 disposed between the upper extension plate 214 and the drive plate 20, and a lower slider guide rail module 272 connected between the drive plate 20 and the mounting base plate 215.

[0024] The drive unit includes a motor 11, a motor support plate 12, a synchronous belt 13, a synchronous pulley 14, a gear 15, and a rack 16. The motor drives the small pulley in the synchronous pulley to rotate. The motor support plate 12 is arranged parallel to and directly opposite the main fixed plate 21. The motor support plate is fixed on the mounting base plate 215. The small pulley drives the large pulley to rotate through the synchronous belt 13. The large pulley is connected to the drive gear 15 through a transmission shaft. The gear 15 meshes with the rack 16. When the gear 15 rotates, it drives the rack to move linearly. The rack is rigidly connected to the drive plate 20. When the rack moves, it drives the drive plate 20 to move linearly.

[0025] like Figure 4 As shown, the probe module 3 includes a probe base plate 31, a probe holder 37 that is slidably connected to the probe base plate 31 along the direction perpendicular to the mounting base plate 215 or along the oblique direction, a probe 39 mounted on the probe holder 37, an elastic element that makes the probe always have a tendency to move vertically upward or obliquely upward, a slider 36 fixed to the probe base plate 31, a slide rail 35 that is fixedly connected to the probe holder 37 and slidably connected to the slider 36, an outer frame 32 located below the probe 39 and enclosing the other components of the probe module 3, and a spring fixing plate 34 that is fixedly connected to the lower end of the slide rail 35. A probe frame 38 is mounted on the probe holder 37 and is rotatably connected to the probe holder 37. The probe is fixed on the probe frame 38. The rotation axis 331 of the probe frame 38 is parallel to the upper extension plate 214. An elastic element is connected between the slide rail 35 and the probe base plate 31. The elastic element is a constant force spring 33. The main body of the constant force spring 33 is rotatably connected to the spring fixing plate 34. The end 332 of the spring plate of the constant force spring 33 is fixed to the probe base plate 31. The connection point A between the end of the spring plate of the constant force spring 33 and the probe base plate 31 is higher than the rotation axis 331 of the main body of the constant force spring 33.

[0026] The specific motion process of the drive and transmission parts is as follows:

[0027] When the ultrasonic probe needs to extend forward during an ultrasonic scan, motor 11 rotates, transmitting power to the rack and pinion mechanism via synchronous belt 13. Rack 16 drives drive plate 20 to extend forward, and drive plate 20 drives the propulsion module of the transmission unit. The specific movement of the propulsion module is as follows: Figure 5 , Figure 6 As shown. The drive plate 20 extends forward, and the push roller mounting plate 24 is rigidly connected to the drive plate 20, moving forward together with the drive plate 20. The push clamping block 22 is fixed on the main fixed plate 21. As the push roller 23 moves forward, the distance between the push roller and the push clamping block increases. Since the length of the push timing belt is fixed, the distance between the push roller and the push clamping plate shortens. The push clamping plate is rigidly connected to the upper extension plate 214, so the push clamping plate will drive the upper extension plate to extend forward. The transmission module consists of... Figure 5 Exercise to Figure 6 This state enables two-stage transmission between the drive board 20 and the upper extension plate, increasing the extension distance.

[0028] When an ultrasound scan requires probe retrieval, i.e. Figure 7 Exercise to Figure 8 In the current state, the motor rotates, driving the drive plate 20 to retract, which in turn drives the retraction roller fixing plate 28 and the retraction roller 29 to retract. The retraction clamping block 213 is fixed to the side main fixing plate 212, simultaneously clamping one end of the retraction timing belt 210. At this time, the distance between the retraction roller 29 and the retraction clamping block 213 increases, correspondingly shortening the distance between the retraction belt clamping plate 211 and the retraction roller 29. The retraction belt clamping plate 211 is fixed to the upper extension plate 214, and the retraction of the retraction belt clamping plate 211 will drive the upper extension plate 214 to retract. The transmission unit will be... Figure 7 Exercise to Figure 8 The status is determined to enable probe retrieval.

[0029] The movement of probe module 3 is as follows: When the drive unit drives the probe to perform ultrasonic scanning on the workpiece, the probe needs to be pressed firmly onto the workpiece, maintaining a constant clamping force. When the probe is pressed onto the workpiece, the slide rail 35 of probe module 3 will move downwards on the track of slider 36. The fixing plate 35 is fixed to the lower end of the slide rail 35 and will move downwards together with the slide rail 35. The rotation axis of constant force spring 33 will also descend. Since the spring plate of constant force spring 33 is fixed on probe base plate 3131, probe base plate 31 does not move downwards with slide rail 35. The spring plate of constant force spring 33 will be stretched, providing a constant clamping force for the probe.

[0030] The transmission module of this device can achieve two-stage transmission. The number of transmission stages can be increased to expand the range of motion according to actual site requirements. When retracted, the overall size of the device is small; when extended, the extension range is long, making it suitable for site conditions with limited installation space but a large range of motion.

[0031] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A progressive ultrasonic scanning device, comprising: Probe module, The drive unit is used to provide power to the device; A transmission unit, which connects the drive unit and the probe module; Its characteristic is that the transmission unit includes a propulsion module and a recovery module. The propulsion module includes a mounting base plate, a main fixing plate, a propulsion clamping block, a propulsion roller, a propulsion roller mounting plate, a propulsion belt clamping plate, a propulsion timing belt, a slider guide rail assembly, an upper extension plate, and a drive plate that is driven to move linearly by the driven part. The propulsion clamping block is fixed to the main fixing plate, the propulsion belt clamping plate is fixed to the upper extension plate, the propulsion roller mounting plate is fixed to the drive plate, the propulsion roller is mounted on the propulsion roller mounting plate, and the two ends of the propulsion timing belt are clamped by the propulsion clamping block and the propulsion belt clamping plate respectively, while passing around the propulsion roller. The slider guide rail assembly includes an upper slider guide rail module disposed between the upper protruding plate and the drive plate, and a lower slider guide rail module connected between the drive plate and the mounting base plate; the drive plate drives the push roller to move forward together, thereby driving the push belt clamp to extend the upper protruding plate forward, realizing the two-stage transmission between the drive plate and the upper protruding plate; The recycling module includes a recycling roller fixing plate, a recycling roller, a recycling timing belt, a recycling belt clamping plate, a side fixing plate, and a recycling clamping block. The recycling roller fixing plate is fixed to the drive plate, the recycling roller is fixed to the recycling roller fixing plate, the recycling belt clamping plate is fixed to the upper extension plate, and the recycling clamping block is fixed to the side fixing plate. Both ends of the recycling timing belt are clamped by the recycling belt clamping plate and the recycling clamping block, respectively, and pass around the recycling roller. The main fixing plate and the side fixing plate are arranged parallel to each other. The main fixing plate is fixed to the mounting base plate, and the side fixing plate is fixed to the drive plate.

2. The progressive ultrasonic scanning device according to claim 1, characterized in that: The drive unit includes a motor, a motor support plate, a synchronous belt, a synchronous pulley, a gear, and a rack. The motor drives the small pulley of the synchronous pulley to rotate. The motor support plate is arranged parallel to and directly opposite the main fixed plate. The motor support plate is fixed to the mounting base plate. The small pulley drives the large pulley to rotate via the synchronous belt. The large pulley is connected to the drive gear via a transmission shaft. The gear meshes with the rack. When the gear rotates, it drives the rack to move linearly. The rack is rigidly connected to the drive plate. When the rack moves, it drives the drive plate to move linearly.

3. The progressive ultrasonic scanning device according to claim 1, characterized in that: The probe module includes a probe base plate, a probe holder that is slidably connected to the probe base plate in a direction perpendicular to the mounting base plate or in an oblique direction, a probe mounted on the probe holder, and an elastic element that makes the probe always have a tendency to move vertically upward or obliquely upward.

4. The progressive ultrasonic scanning device according to claim 3, characterized in that: The probe frame is mounted on the probe holder and is rotatably connected to the probe holder. The probe is fixed on the probe frame, and the rotation axis of the probe frame is parallel to the upper extension plate.

5. The progressive ultrasonic scanning device according to claim 3, characterized in that: The probe module includes a slider fixed to the probe base plate, a slide rail fixedly connected to the probe frame and slidably connected to the slider, and an elastic element connected between the slide rail and the probe base plate.

6. The progressive ultrasonic scanning device according to claim 5, characterized in that: The elastic element is a constant force spring. The probe module includes a spring fixing plate fixedly connected to the lower end of the slide rail. The main body of the constant force spring is rotatably connected to the spring fixing plate, and the end of the spring plate of the constant force spring is fixed to the probe base plate. The connection between the end of the spring plate of the constant force spring and the probe base plate is higher than the rotation axis of the main body of the constant force spring.

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