Ultrasonic detection two-dimensional manual scanning omnidirectional encoding device

Abstract

The utility model provides a kind of ultrasonic detection two-dimensional manual scanning omni-directional coding device, double output shaft encoder includes shell and shaft body;Shaft body is fixed in shell by bearing, two end shaft body extends to shell outside, and is connected omni-directional wheel by coupling respectively, including code disc, first photoelectric sensor and second photoelectric sensor in shell;Code disc is installed on shaft body, and first photoelectric sensor and second photoelectric sensor detect code disc rotation to generate pulse signal;Single output shaft encoder includes a single output shaft with only one end extending out, and single output shaft coaxially connected with omni-directional wheel;Single output shaft encoder is also provided with code disc and photoelectric sensor inside;Double output shaft encoder and single output shaft encoder are on the same horizontal plane and perpendicular to each other.The utility model solves the problem of traditional encoder needing secondary adjustment, only single direction measurement and positioning precision insufficient.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic testing, and more specifically to a two-dimensional manual scanning omnidirectional coding device for ultrasonic testing. Background Technology

[0002] Ultrasonic testing technology, based on the propagation characteristics of high-frequency sound waves in a medium, achieves non-contact measurement by analyzing signals such as reflection and attenuation. It boasts advantages such as resistance to electromagnetic interference and adaptability to harsh environments, and is widely used in industrial non-destructive testing, medical imaging, and precision manufacturing. However, when tracking displacement or velocity in real-time under dynamic conditions, traditional testing systems often face problems such as signal processing delays and mechanical wear. To address these issues, encoders have been applied in ultrasonic testing. They combine acoustic feedback with digital encoding technology, using high-precision phase analysis and anti-interference algorithms to directly convert physical displacement into digital signals, achieving real-time measurement at the micrometer level. Especially in scenarios such as industrial robot positioning and motion control of medical equipment, encoders not only improve testing efficiency but also avoid errors caused by mechanical contact, becoming a key component in ultrasonic testing.

[0003] An encoder is a sensor that generates digital signals in response to motion. There are two main types: rotary encoders, which respond to rotational motion, and linear encoders, which respond to linear motion. In the field of ultrasonic testing, rotary encoders are often used in conjunction with mechanical transmission devices, such as measuring wheels or gears.

[0004] Existing encoders in the field of ultrasonic testing, such as wheel encoders, have unreasonable structural designs, which can only realize motion information feedback in one direction and have insufficient positioning accuracy. In actual testing, manual secondary adjustment of the encoder is required to achieve omnidirectional scanning. Utility Model Content

[0005] In view of the above shortcomings, this utility model provides an ultrasonic testing two-dimensional manual scanning omnidirectional encoding device, including an omnidirectional wheel, a dual-output shaft encoder, a single-output shaft encoder, and an L-shaped mounting bracket;

[0006] The L-shaped mounting bracket includes a top plate, and two mounting plates are vertically fixed below the top plate. The two mounting plates are vertically fixed and connected to each other to form an L-shaped structure. Both mounting plates are provided with connection positions for mounting a dual-output shaft encoder and a single-output shaft encoder, respectively.

[0007] The dual-output shaft encoder includes a housing and shafts. The shafts are fixed inside the housing by bearings, with both ends extending outside the housing and connected to omnidirectional wheels via couplings. The omnidirectional wheels rotate synchronously with the shafts. The housing contains a code disk, a first photoelectric sensor, and a second photoelectric sensor. The code disk is mounted on the shaft and rotates with it. The first and second photoelectric sensors detect the rotation of the code disk, thereby generating pulse signals. The housing is sealed and dustproof, ensuring stability and lifespan in industrial environments.

[0008] The housing of the dual output shaft encoder is fixed to a mounting plate on an L-shaped mounting bracket;

[0009] A single-output shaft encoder consists of a single output shaft extending from only one end, with an omnidirectional wheel coaxially connected to the single output shaft. The single-output shaft encoder also internally houses a code disk and a photoelectric sensor.

[0010] The single-output shaft encoder is mounted on another mounting plate of the L-shaped mounting bracket;

[0011] The dual-output shaft encoder and the single-output shaft encoder are on the same horizontal plane and perpendicular to each other, and also perpendicular to the top plate of the L-shaped mounting bracket. The three omnidirectional wheels form a stable triangle on the plane, ensuring the stability of the support structure.

[0012] The omnidirectional wheel comprises two sets of wheel assemblies, each set including rollers, a hub, and roller shafts. The hub is the main structure, and the rollers are circumferentially and evenly fastened to the hub via roller shafts, allowing each roller to rotate independently. The two sets of wheel assemblies are fixedly connected by a center block, with the hub and center block axes on the same horizontal line.

[0013] During ultrasonic testing, an omnidirectional encoder scanning device is placed on the workpiece surface. Its manual scanning trajectory lies on a two-dimensional plane containing the workpiece surface. We can imagine an XY coordinate system on the workpiece surface, with the X-coordinate describing the horizontal component of motion and the Y-coordinate describing the vertical component. The XY coordinates are measured by the rotation angle of the omnidirectional wheels. During movement, the rotation of the omnidirectional wheels is transmitted to the encoder, which calculates the data to achieve workpiece surface positioning.

[0014] The aforementioned benefits are as follows: the encoder's internal code disk is coaxially mounted with the shaft. The shaft drives the code disk to rotate, and the changes in light transmission / blocking during rotation are captured by the sensor and converted into pulse signals. High-precision positioning and rapid response are achieved through pulse counting and phase difference. Two encoders are fixed perpendicularly to each other using an L-shaped handheld mounting bracket, and the three omnidirectional wheels form a stable triangular layout on the plane. This layout reduces the impact of vibration and deformation on encoder measurements, ensuring signal stability. Simultaneously, the two encoders measure motion in orthogonal directions, reducing mutual interference and enabling precise in-plane positioning and direction control. This solves the problems of traditional encoders requiring secondary adjustments, only being able to measure in a single direction, and having insufficient positioning accuracy.

[0015] The omnidirectional wheel can not only drive forward and backward, but also move laterally, achieving omnidirectional movement in a plane. This allows the encoder to reach the detection target position directly along a straight line or diagonal line without having to detour, which reduces readjustment time and improves detection efficiency.

[0016] The L-shaped handheld mounting bracket enables more convenient and rapid testing. At the same time, the L-shaped handheld mounting bracket provides a reliable connection between the encoder and the device. This means that the L-shaped handheld mounting bracket will not be difficult to install or affect the testing efficiency after installation due to unreasonable housing design, or the encoder will vibrate or deform, affecting the reliability of the encoder measurement results. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a meter wheel encoder according to a specific embodiment of this utility model;

[0018] Figure 2 This is an exploded view of a specific embodiment of the meter wheel encoder of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of an L-shaped handheld mounting bracket according to a specific embodiment of this utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of an omnidirectional wheel according to a specific embodiment of this utility model;

[0021] Figure 5 This is an exploded view of an omnidirectional wheel according to a specific embodiment of this utility model;

[0022] Figure 6 This is a three-dimensional schematic diagram of a dual-output shaft encoder according to a specific embodiment of this utility model;

[0023] Figure 7 This is an exploded view of a specific embodiment of the dual-output shaft encoder of this utility model. Detailed Implementation

[0024] To better understand this utility model, the specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0025] like Figures 1 to 7 As shown, a specific embodiment of this utility model is an ultrasonic testing two-dimensional manual scanning omnidirectional encoding device, including an omnidirectional wheel 1, a dual-output shaft encoder 4, a single-output shaft encoder 3, and an L-shaped mounting bracket 2;

[0026] The L-shaped mounting bracket 2 includes a top plate, and two mounting plates are vertically fixed below the top plate. The two mounting plates are vertically fixed and connected to each other to form an L-shaped structure. Both mounting plates are provided with connection positions 5, which are used to install a dual-output shaft encoder 4 and a single-output shaft encoder 3, respectively.

[0027] The dual-output shaft encoder 4 includes a housing 10 and a shaft 12. The shaft 12 is fixed inside the housing 10 by bearings 13, and both ends of the shaft 12 extend outside the housing 10 and are respectively connected to omnidirectional wheels 1 via couplings. The omnidirectional wheels 1 rotate synchronously with the shaft 12. The housing 10 includes a code disk 14, a first photoelectric sensor 15, and a second photoelectric sensor 16. The code disk 14 is mounted on the shaft 12 and rotates with the shaft 12. The first photoelectric sensor 15 and the second photoelectric sensor 16 detect the rotation of the code disk 14 to generate pulse signals. The housing 10 is sealed and dustproof.

[0028] The housing 10 of the dual output shaft encoder 4 is fixed to a mounting plate of the L-shaped mounting bracket 2;

[0029] The single-output shaft encoder 3 includes a single output shaft extending from only one end, with an omnidirectional wheel 1 coaxially connected to the single output shaft. The single-output shaft encoder 3 also internally houses a code disk and a photoelectric sensor.

[0030] The single-output shaft encoder 3 is mounted on another mounting plate of the L-shaped mounting bracket 2;

[0031] The dual-output shaft encoder 4 and the single-output shaft encoder 3 are on the same horizontal plane and perpendicular to each other, and perpendicular to the top plate of the L-shaped mounting bracket 2. The three omnidirectional wheels 1 form a stable triangle on the plane;

[0032] The omnidirectional wheel 1 includes two sets of wheel sets, each set including a roller 7, a hub 6, and a roller 8; the hub 6 is the main structure, and the rollers 7 are circumferentially and evenly fastened to the hub 6 by the rollers 8, and each roller 7 can rotate independently. The two sets of wheel sets are fixedly connected by a center block 9, and the axes of the hub 6 and the center block 9 are on the same horizontal line.

[0033] The implementation of this utility model is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model are equivalent substitutions and are included within the protection scope of this utility model.

Claims

1. A two-dimensional manual scanning omnidirectional coding device for ultrasonic testing, characterized in that, It includes a dual-output shaft encoder (4), a single-output shaft encoder (3), an L-shaped mounting bracket (2), and three omnidirectional wheels (1); The dual-output shaft encoder (4) includes a housing (10) and a shaft (12); the shaft (12) is fixed inside the housing (10) by bearings (13), and the two ends of the shaft (12) extend outside the housing (10) and are respectively connected to omnidirectional wheels (1) by couplings. The omnidirectional wheels (1) rotate synchronously with the shaft (12); the housing (10) includes a code disk (14), a first photoelectric sensor (15) and a second photoelectric sensor (16); the code disk (14) is mounted on the shaft (12) and rotates with the shaft (12). The first photoelectric sensor (15) and the second photoelectric sensor (16) detect the rotation of the code disk (14) to generate pulse signals. The housing (10) of the dual output shaft encoder (4) is fixed on the L-shaped mounting bracket (2); The single-output shaft encoder (3) includes a single output shaft that extends from only one end, and the single output shaft is coaxially connected to an omnidirectional wheel (1); the single-output shaft encoder (3) also has a code disk and a photoelectric sensor inside; The single-output shaft encoder (3) is mounted on the L-shaped mounting bracket (2); The dual-output shaft encoder (4) and the single-output shaft encoder (3) are on the same horizontal plane and perpendicular to each other, and the three omnidirectional wheels (1) form a stable triangle on the plane.

2. The ultrasonic testing two-dimensional manual scanning omnidirectional coding device according to claim 1, characterized in that, The L-shaped mounting bracket (2) includes a top plate, and two mounting plates are vertically fixed below the top plate. The two mounting plates are vertically fixed and connected to each other to form an L-shaped structure. Both mounting plates are provided with connection positions (5), which are used to install a dual-output shaft encoder (4) and a single-output shaft encoder (3), respectively. The housing (10) of the dual-output shaft encoder (4) is fixed on one mounting plate of the L-shaped mounting bracket (2). The single-output shaft encoder (3) is installed on the other mounting plate of the L-shaped mounting bracket (2). The dual-output shaft encoder (4) and the single-output shaft encoder (3) are perpendicular to the top plate of the L-shaped mounting bracket (2).

3. The ultrasonic testing two-dimensional manual scanning omnidirectional coding device according to claim 1, characterized in that, The omnidirectional wheel (1) includes two sets of wheels, each set of wheels including a roller (7), a hub (6), and a roller (8); the hub (6) is the main structure, and the roller (7) is circumferentially and evenly fastened to the hub (6) by the roller (8), and each roller (7) can rotate independently; the two sets of wheels are fixedly connected by a center block (9), and the axes of the hub (6) and the center block (9) are on the same horizontal line.

4. The ultrasonic testing two-dimensional manual scanning omnidirectional coding device according to claim 1, characterized in that, The housing (10) is a sealed and dustproof structure.

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