Probe fixing device

Abstract

The utility model belongs to the technical field of ultrasonic detection, and discloses a probe fixing device. The probe fixing device comprises a loading frame, a fixing seat, an approaching assembly and a universal mechanism, wherein the loading frame is used for being connected with an executing mechanism; the fixing seat is used for fixing a probe; the approaching assembly is used for being connected to the probe, the approaching assembly is provided with an abutting block, and the abutting block is configured to abut against the to-be-detected surface, so that a gap is formed between the probe and the to-be-detected surface; the universal mechanism is provided with a first end and a second end, the first end and the second end are connected to the loading frame and the fixing base respectively, and the first end can rotate in any direction relative to the second end. The probe fixing device is simple in structure and convenient to use, and can be automatically steered and adjusted relative to the loading frame under the action of the abutting force of the abutting assembly, so that the probe directly faces and is close to the to-be-detected surface, the attaching degree of the probe and the to-be-detected surface is improved, and the detection stability and accuracy are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic testing technology, and in particular to a probe fixing device. Background Technology

[0002] Ultrasonic testing is commonly used for non-destructive testing of internal defects in workpieces, enabling accurate and rapid acquisition of information such as the length, depth, and size of these defects. When using ultrasonic testing equipment, operators need to bring the testing probe close to the workpiece via an actuator. The probe then generates sound waves to detect defects.

[0003] When existing ultrasonic testing equipment inspects workpieces, the probe cannot be in contact with the surface to be tested due to the different placement angles of different workpieces and the different test surfaces of each workpiece, resulting in inaccurate test results. Manually adjusting the angle of the test probe will greatly reduce the testing speed.

[0004] Therefore, there is an urgent need to design a probe fixing device to solve the above-mentioned problems in the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a probe fixing device that can improve the fit between the probe and the surface to be measured, thereby improving the accuracy of the detection.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a probe fixing device, including:

[0008] A loading rack for connection to an actuator;

[0009] Mounting base, the mounting base being used to fix the probe;

[0010] The universal joint has a first end and a second end, the first end and the second end being respectively connected to the loading frame and the fixed base, and the first end being able to rotate relative to the second end in any direction.

[0011] A proximity assembly, connected to the probe, the proximity assembly having an abutment block configured to abut against the surface to be measured, such that there is a gap between the probe and the surface to be measured;

[0012] Preferably, the universal joint includes a ball joint, a mounting base, and a connecting rod, wherein the connecting rod is connected to one of the fixed base and the loading frame, and the mounting base is fixedly disposed on the other of the fixed base and the loading frame;

[0013] The ball head is connected to the connecting rod, and the interior of the mounting base has a spherical groove. The ball head is embedded in the spherical groove and mates with the spherical surface of the groove.

[0014] Preferably, the universal joint further includes a reset elastic element, the two ends of which are respectively connected to the fixed base and the loading frame, and multiple reset elastic elements are evenly arranged around the ball head.

[0015] Preferably, the approach component includes a connecting plate, the connecting plate being adjustablely positioned on the probe, and the abutment block being fixedly positioned on the connecting plate.

[0016] Preferably, a rolling element is provided on the end face of the abutment block facing the surface to be tested.

[0017] Preferably, the connecting plate has an assembly hole through which the probe passes. The connecting plate has an abutment hole that is angled to the axis of the probe and connected to the assembly hole. A locking member is screwed into the abutment hole, and the end of the locking member abuts against the probe.

[0018] Preferably, the probe fixing device further includes a pressure sensor, which is disposed between the universal joint and the loading frame. The pressure sensor is used to detect the pressure between the surface to be tested and the approach component and output an electrical signal.

[0019] Preferably, the probe fixing device further includes a buffer elastic element, which is disposed between the loading frame and the universal joint mechanism.

[0020] Preferably, the loading frame includes a base plate and a fixing block, and the probe fixing device further includes a guide column. The base plate is connected to the actuator, the fixing block is fixedly disposed on the base plate, one end of the guide column is connected to the first end of the universal mechanism, and the other end of the guide column is movably disposed through the fixing block along the moving direction of the actuator.

[0021] The buffer elastic element is sleeved on the guide post, and the two ends of the buffer elastic element abut against the first end and the fixing block, respectively.

[0022] Preferably, the mounting base includes a support platform and two claws movably disposed on the support platform, the two claws abutting against the probe on opposite sides along the radial direction.

[0023] The beneficial effects of this utility model are:

[0024] The probe fixing device provided by this utility model includes a loading frame, a fixing base, a proximity component, and a universal mechanism. Since the probe is fixedly mounted on the fixing base, which is connected to the loading frame via the universal mechanism, and the loading frame is connected to the actuator, the operator can control the actuator to move the probe for defect detection on the surface to be tested. Because the proximity component is connected to the probe, and its proximity block is used to abut against the surface to be tested, a gap exists between the probe and the surface. Therefore, the proximity component can limit the probe's movement, ensuring the required detection distance between the probe and the surface, and preventing the probe from sticking to the surface and causing damage. Since the first and second ends of the universal mechanism are respectively connected to the fixing base and the loading frame, and can rotate in any direction between the first and second ends, when the actuator brings the probe on the probe fixing device close to the surface to be tested on the workpiece, the fixing base can automatically rotate and adjust relative to the loading frame under the pressure of the proximity component, so that the probe faces the surface to be tested, thereby improving the fit between the probe and the surface and greatly improving the stability and accuracy of the detection. Attached Figure Description

[0025] Figure 1 This is an isometric view of the probe fixing device provided in a specific embodiment of this utility model;

[0026] Figure 2 This is a cross-sectional view of the probe fixing device provided in a specific embodiment of this utility model.

[0027] In the picture:

[0028] 100-probe;

[0029] 1-Loading frame; 11-Base plate; 12-Fixing block;

[0030] 2-Proximity component; 21-Abutment block; 22-Connecting plate; 221-Abutment hole; 23-Rolling element;

[0031] 3-Fixed base; 31-Bearing platform; 32-Claw; 33-Adjusting screw;

[0032] 4-Universal mechanism; 41-Ball head; 42-Mounting base; 43-Reset elastic element; 44-Connecting rod; 45-First mounting plate;

[0033] 5-Pressure sensor; 51-Second mounting plate;

[0034] 6- Buffer elastic element;

[0035] 7-Guide column. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] like Figure 1As shown, this utility model provides a probe fixing device, which includes a loading frame 1, a fixing base 3, a contact component 2, and a universal mechanism 4. The loading frame 1 is used to connect with the actuator; the fixing base 3 is used to fix the probe 100; the contact component 2 is used to connect to the probe 100, and the contact component 2 has a contact block 21, which is configured to contact the surface to be measured so that there is a gap between the probe 100 and the surface to be measured; the universal mechanism 4 has a first end and a second end, which are respectively connected to the loading frame 1 and the fixing base 3, and the first end can rotate in any direction relative to the second end. In this embodiment, since the probe 100 is fixedly mounted on the fixed base 3, and the fixed base 3 is connected to the loading frame 1 via the universal joint 4, and the loading frame 1 is connected to the actuator, the operator can control the actuator to move the probe 100 to perform defect detection on the surface to be tested. Since the probe 100 is connected to the approach component 2, and the approach block 21 of the approach component 2 is used to abut against the surface to be tested, so that there is a gap between the probe 100 and the surface to be tested, the approach component 2 can limit the movement of the probe 100 to ensure the required detection distance between the probe 100 and the surface to be tested. It can also prevent the probe 100 from being damaged by sticking to the surface to be measured. Since the first end and the second end of the universal mechanism 4 are respectively connected to the fixed base 3 and the loading frame 1, and the first end and the second end can rotate in any direction, when the actuator brings the probe 100 on the probe fixing device close to the surface to be measured of the workpiece, the fixed base 3 can automatically turn and adjust relative to the loading frame 1 under the pressure of the approach component 2, so that the probe 100 is facing the surface to be measured, thereby improving the degree of contact between the probe 100 and the surface to be measured, and greatly improving the stability and accuracy of the detection.

[0041] Specifically, the probe 100 used for ultrasonic testing has a cylindrical structure. During testing, the probe 100 needs to be fixedly installed on the mounting base 3, and the loading frame 1 is installed on the actuator of the ultrasonic testing equipment. The actuator drives the probe 100 to approach the surface to be tested along the axial direction of the probe 100 through the probe fixing device, so as to perform ultrasonic defect detection on the workpiece.

[0042] The specific structure of the universal joint 4 can be set according to actual needs, as long as it can achieve relative rotation between the first end and the second end in any direction. For example, such as Figure 2As shown, the universal joint 4 includes a ball head 41, a mounting base 42, and a connecting rod 44. The ball head 41 is connected to one of the fixed base 3 and the loading frame 1 via the connecting rod 44. The mounting base 42 is fixedly disposed on the other of the fixed base 3 and the loading frame 1. The mounting base 42 has a spherical groove inside, and the ball head 41 is embedded in the spherical groove and mates with the spherical surface of the spherical groove. Since the ball head 41 is a sphere and mates with the spherical surface of the spherical groove of the mounting base 42, the ball head 41 can rotate freely relative to the mounting base 42. Specifically, the universal joint... The mounting base 42 of the mechanism 4 is the first end, and the mounting base 42 is fixedly connected to the loading frame 1. The connecting rod 44 of the universal mechanism 4 is the second end, and the connecting rod 44 is fixedly connected to the fixed base 3. When the probe fixing device moves the probe 100 close to the surface to be measured, the abutment block 21 abuts against the surface to be measured. If there is an angle between the abutment block 21 and the surface to be measured, the fixed base 3 can automatically adjust the angle relative to the loading frame 1 under the rotation of the ball head 41, so that the abutment block 21 fits against the surface to be measured, thereby ensuring the detection accuracy of the probe 100.

[0043] like Figure 1 and Figure 2 As shown, the universal joint 4 also includes a reset elastic element 43. The two ends of the reset elastic element 43 are connected to the fixed base 3 and the loading frame 1, respectively. Multiple reset elastic elements 43 are evenly arranged around the ball head 41. The reset elastic elements 43 can provide elastic force to the fixed base 3. Since multiple reset elastic elements 43 are evenly arranged around the ball head 41, multiple reset elastic elements 43 can work together on the fixed base 3 so that the fixed base 3 has a tendency to return to its initial position. Specifically, the reset elastic element 43 is a spring, and four reset elastic elements 43 are arranged around the ball head 41. When the fixed seat 3 does not rotate relative to the loading frame 1, the movement direction of the actuator is the same as the axis of the probe 100 on the fixed seat 3, so that the operator can better align the probe 100 with the surface to be measured. When the fixed seat 3 rotates relative to the loading frame 1, the probe fixing device bends from the universal joint 4, and there is an angle between the axis of the probe 100 and the movement direction of the actuator. At this time, one or more reset elastic elements 43 will be compressed, while the rest of the reset elastic elements 43 will be stretched. After the workpiece is inspected, the actuator drives the probe fixing device away from the surface to be measured, and the fixed seat 3 will automatically return to the initial position under the elastic force of the multiple reset elastic elements 43. At this time, the axis of the probe 100 is the same as the movement direction of the actuator, which facilitates the next inspection operation.

[0044] The specific structure of the proximity component 2 can be configured according to actual needs, as long as it can be fixedly connected to the probe 100 and abut against the surface to be measured; for example, such as Figure 1As shown, the proximity component 2 includes a connecting plate 22, and an abutment block 21 is fixedly disposed on the connecting plate 22. The position of the connecting plate 22 is adjustable on the probe 100. Therefore, the probe fixing device can adaptively adjust the detection distance between the probe 100 and the surface to be measured according to the actual detection needs, thereby improving the practicality of the probe fixing device.

[0045] Specifically, such as Figure 1 As shown, the connecting plate 22 has an assembly hole through which the probe 100 passes. The connecting plate 22 has an abutment hole 221, which is angled to the axis of the probe 100 and connected to the assembly hole. A locking element is screwed into the abutment hole 221, with its end abutting against the probe 100. The probe 100 can be fixed by tightening the locking element. The structure is simple and easy to operate. Specifically, the inner diameter of the assembly hole is larger than the outer diameter of the probe 100, the axis of the abutment hole 221 is perpendicular to the axis of the assembly hole, and the inner wall of the abutment hole 221 has threads. The locking element is a screw or bolt. The connecting plate 22 is sleeved on the probe 100 and can move along the axial direction of the probe 100. After moving to a suitable position, the locking element is screwed into the abutment hole 221 until its end abuts against the probe 100, thus fixing the connecting plate 22 to the probe 100.

[0046] To reduce the friction between the proximity component 2 and the surface to be tested, such as Figure 1 and Figure 2 As shown, a rolling element 23 is provided on the end face of the abutment block 21 facing the surface to be measured. The rolling element 23 makes the abutment block 21 roll into contact with the surface to be measured, which greatly reduces the resistance when the workpiece moves relative to the probe fixing device. At the same time, it can also prevent the approach component 2 from scratching the surface to be measured. The rolling element 23 can be a spherical roller or a regular cylindrical roller. In this embodiment, the connecting plate 22 is sleeved on the probe 100. The abutment blocks 21 are protruding on opposite ends of the connecting plate 22. The rolling element 23 is a cylindrical roller and is rolled on the abutment blocks 21 on both sides. When the fixing seat 3 turns under the pressure of the actuator, the abutment block 21 slides relative to the surface to be measured through the rolling element 23 to fit the surface to be measured, thereby reducing the friction between the approach component 2 and the surface to be measured.

[0047] like Figure 2 As shown, the probe fixing device also includes a pressure sensor 5, which is located between the fixing base 3 and the loading frame 1. The pressure sensor 5 is used to detect pressure and output an electrical signal. When the pressure sensor 5 detects that the pressure value reaches the preset pressure, the probe fixing device stops pressing against the surface to be tested, thereby protecting the workpiece to be tested and the probe fixing device.

[0048] Specifically, the pressure sensor 5 can be disposed between the fixed base 3 and the universal joint 4, or between the universal joint 4 and the loading frame 1; in this embodiment, as Figure 2 As shown, the universal mechanism 4 also includes a first mounting plate 45, a mounting base 42 is disposed on the first mounting plate 45, one end of the pressure sensor 5 is connected to the first mounting plate 45 and the other end is connected to the second mounting plate 51, and the second mounting plate 51 is connected to the loading frame 1; when inspecting the workpiece, the actuator drives the probe fixing device to abut against the surface to be inspected in the direction close to the surface to be inspected. During this process, the approach component 2 applies pressure to the surface to be inspected. The pressure sensor 5 can detect the magnitude of the abutment force between the universal mechanism 4 and the loading frame 1. When the abutment force reaches the preset pressure, the actuator stops driving the probe fixing device to apply further pressure to the surface to be inspected.

[0049] like Figure 1 and Figure 2 As shown, the probe fixing device also includes a buffer elastic element 6, which is disposed between the loading frame 1 and the fixed seat 3. The buffer elastic element 6 can absorb the pressure between the fixed seat 3 and the loading frame 1, thereby buffering the driving force applied by the actuator and preventing damage caused by excessive driving force of the actuator when the proximity component 2 abuts against the surface to be measured.

[0050] Specifically, such as Figure 1 and Figure 2 As shown, the buffer elastic element 6 is a spring, with one end of the spring set on the second mounting plate 51 and the other end of the spring set against the loading frame 1. When the approach component 2 abuts against the surface to be tested, the loading frame 1 will continue to approach the surface to be tested under the drive of the actuator, and the buffer elastic element 6 will be compressed. At the same time, the pressure sensor 5 on the second mounting plate 51 will detect the abutting force of the loading frame 1. When the abutting force reaches the preset pressure, the actuator will stop driving the loading frame 1.

[0051] To improve the stability of the fit between the loading frame 1 and the universal joint 4, such as Figure 1 and Figure 2As shown, the loading frame 1 includes a base plate 11 and a fixing block 12. The probe fixing device also includes a guide post 7. The base plate 11 is connected to the actuator, the fixing block 12 is fixedly set on the base plate 11, one end of the guide post 7 is connected to the first end of the universal mechanism 4, and the other end of the guide post 7 is movably inserted through the fixing block 12 along the moving direction of the actuator. The buffer elastic member 6 is sleeved on the guide post 7, and the two ends of the buffer elastic member 6 abut against the first end of the universal mechanism 4 and the fixing block 12, respectively. Specifically, the loading frame 1 includes a base plate 11 and a fixing block 12. The base plate 11 is bolted to the actuator. The fixing block 12 is fixedly mounted on the base plate 11. There are two fixing blocks 12 and two guide posts 7. The two guide posts 7 are respectively movably inserted into the fixing blocks 12. The fixing blocks 12 can slide along the guide posts 7 under the drive of the actuator. The other end of the guide post 7 passes through the second mounting plate 51 and is movably connected to the first mounting plate 45. The guide post 7 and the second mounting plate 51 are fixedly connected and move synchronously. One end of the elastic buffer 6 abuts against the second mounting plate 51 and the other end abuts against the fixing block 12. In this embodiment, the cooperation relationship between the guide post 7 and the buffer elastic member 6 is as follows: The actuator drives the probe fixing device to approach the surface to be measured as a whole. When it approaches the component... After the abutting block 21 of 2 abuts against the surface to be tested, the actuator continues to apply pressure to the loading frame 1. At this time, the direction of the reaction force received by the probe fixing device from the surface to be tested is: approach component 2 - probe 100 - fixing seat 3 - ball head 41 of universal mechanism 4 - mounting seat 42 of universal mechanism 4 - first mounting plate 45 of universal mechanism 4 - pressure sensor 5 - second mounting plate 51. Subsequently, the base plate 11 and fixing block 12 will continue to approach the surface to be tested along the guide post 7 under the drive of the actuator, thereby squeezing the buffer elastic element 6 until the pressure sensor 5 alarms and stops applying pressure. It can be understood that since the end of the guide post 7 is movably connected to the first mounting plate 45, the first mounting plate 45 can move slightly relative to the guide post 7 after being subjected to pressure to squeeze the pressure sensor 5.

[0052] like Figure 1As shown, the fixing base 3 includes a support platform 31 and two claws 32 movably disposed on the support platform 31. The two claws 32 abut against the radially opposite sides of the probe 100, thereby fixing probes 100 of different sizes. Specifically, the fixing base 3 also includes an adjusting screw 33. A guide rail is provided on the support platform 31. The ends of the claws 32 are embedded in the guide rail and can move along the guide rail. The two claws 32 have threaded holes with opposite thread directions. The adjusting screw 33 is screwed into the two threaded holes. A limit block is also provided on the support platform 31. The middle position of the adjusting screw 33 passes through the limit block, which can prevent the adjusting screw 33 from moving axially. When it is necessary to adjust the position of the two claws 32 to clamp the probe 100 in the middle, the operator rotates the adjusting screw 33 in the forward direction, and the two claws 32 move closer to each other along the guide rail. When the probe 100 needs to be removed after the test, the operator rotates the adjusting screw 33 in the reverse direction, and the two claws 32 move away from each other along the guide rail.

[0053] To further improve the fixation effect on the probe 100, the claw 32 is provided with an arc-shaped surface on the side facing the probe 100, so that the claw 32 can better fit against the probe 100, thereby improving the fixation effect on the probe 100.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A probe fixing device, characterized in that, include: Loading rack (1), the loading rack (1) being used to connect to the actuator; Fixing base (3), the fixing base (3) is used to fix the probe (100); Universal mechanism (4), the universal mechanism (4) has a first end and a second end, the first end is connected to the loading frame (1), the second end is connected to the fixed base (3), and the second end can rotate relative to the first end in any direction; A proximity component (2) is connected to the probe (100). The proximity component (2) has an abutment block (21) configured to abut against the surface to be tested, so that there is a gap between the probe (100) and the surface to be tested.

2. The probe fixing device according to claim 1, characterized in that, The universal joint (4) includes a ball head (41), a mounting base (42) and a connecting rod (44). The connecting rod (44) is connected to one of the fixed base (3) and the loading frame (1), and the mounting base (42) is fixedly disposed in the other of the fixed base (3) and the loading frame (1). The ball head (41) is connected to the connecting rod (44), and the mounting base (42) has a spherical groove inside. The ball head (41) is embedded in the spherical groove and matches the spherical surface of the spherical groove.

3. The probe fixation device of claim 2, wherein, The universal joint (4) also includes a reset elastic element (43), the two ends of which are connected to the fixed base (3) and the loading frame (1) respectively, and multiple reset elastic elements (43) are evenly arranged around the ball head (41).

4. The probe fixation device of claim 1, wherein, The approach component (2) includes a connecting plate (22), which is tunably positioned on the probe (100), and the abutment block (21) is fixedly positioned on the connecting plate (22).

5. The probe fixation device of claim 4, wherein, The abutment block (21) has a rolling element (23) on its end face facing the surface to be tested.

6. The probe fixing device according to claim 4, characterized in that, The connecting plate (22) has an assembly hole, the probe (100) passes through the assembly hole, the connecting plate (22) has an abutment hole (221), the abutment hole (221) is connected to the assembly hole at an angle to the axis of the probe (100), a locking member is screwed into the abutment hole (221), and the end of the locking member abuts against the probe (100).

7. The probe fixation device of claim 1, wherein, The probe fixing device also includes a pressure sensor (5), which is disposed between the universal mechanism (4) and the loading frame (1). The pressure sensor (5) is used to detect the pressure between the surface to be tested and the approach component (2) and output an electrical signal.

8. The probe fixing device according to claim 1, characterized in that, The probe fixing device also includes a buffer elastic element (6), which is disposed between the loading frame (1) and the universal mechanism (4).

9. The probe fixation device of claim 8, wherein, The loading frame (1) includes a base plate (11) and a fixing block (12). The probe fixing device also includes a guide column (7). The base plate (11) is connected to the actuator. The fixing block (12) is fixedly installed on the base plate (11). One end of the guide column (7) is connected to the first end of the universal mechanism (4). The other end of the guide column (7) is movably inserted through the fixing block (12) along the moving direction of the actuator. The buffer elastic element (6) is sleeved on the guide post (7), and the two ends of the buffer elastic element (6) abut against the first end and the fixing block (12) respectively.

10. The probe fixation device of any of claims 1-9, wherein, The fixed base (3) includes a support platform (31) and two claws (32) movably disposed on the support platform (31), the two claws (32) abutting against the probe (100) on opposite sides in the radial direction.

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