Portable detection equipment based on time-of-flight diffraction method

Abstract

The utility model relates to the technical field of detection equipment, and provides portable detection equipment based on a time of flight diffraction method, which comprises a detector, a movable bottom plate, a plurality of fixed seats, a support cylinder, a connecting frame and a driving seat, the plurality of fixed seats are arranged on the movable bottom plate, the support cylinder is arranged on one side of the movable bottom plate through a support assembly, and the connecting frame is arranged on the movable bottom plate. The connecting frame is slidably arranged on the lower side of the supporting cylinder through a connecting assembly, the detector is rotationally connected with the connecting frame, the driving seat is arranged between the connecting frame and the detector, a pushing handle is fixedly connected to one side of the moving bottom plate, two universal wheels are symmetrically installed at the bottom end of the moving bottom plate, the universal wheels are self-locking wheels, and the moving bottom plate can move to the lower side of the supporting cylinder through the pushing handle and the two universal wheels. And meanwhile, the two universal wheels are locked, so that the movable bottom plate is conveniently fixed. According to the technical scheme, the problem that the detection position is inconvenient to adjust according to the position of the workpiece in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a portable detection equipment based on the time-of-flight diffraction method. Background Art

[0002] Time-of-flight diffraction (TDFD) is an ultrasonic testing technology that primarily uses diffraction signals generated by defect endpoints to detect and quantify defect sizes. When an ultrasonic longitudinal pulse is incident on a workpiece at a certain angle, it generates reflected and diffracted waves upon encountering a defect. Currently, performing ultrasonic testing on workpieces requires manual movement of the TDFD scanning frame, making the work more challenging.

[0003] In response to the above problems, the utility model with patent announcement number CN218412388U discloses an ultrasonic diffraction time-of-flight method detection scanning frame, which is equipped with a servo motor, a push rod, a transmission shaft and a transmission shaft. The servo motor drives the push rod to control the regular left and right movement of the transmission shaft via the transmission shaft, thereby controlling the ultrasonic diffraction time-of-flight method to detect the pipeline. Although it is convenient to reduce the workload of the staff, the ultrasonic diffraction time-of-flight method detection scanning frame is large in size. When inspecting workpieces at different positions, it needs to be carried manually or with the help of other machines. It is not convenient to adjust the detection position according to the position of the workpiece, and the detection has high limitations. Utility Model Content

[0004] The utility model provides a portable detection device based on the time-of-flight diffraction method, which solves the problem in the related art that it is inconvenient to adjust the detection position according to the position of the workpiece.

[0005] The technical solution of the utility model is as follows: A portable detection device based on the time-of-flight diffraction method includes a detector, a movable base plate, a fixed base, a support cylinder, a connecting frame and a driving base;

[0006] The fixing seat is provided in plurality, and the plurality of fixing seats are all provided on the movable bottom plate;

[0007] The support cylinder is arranged on one side of the movable base plate through a support assembly;

[0008] The connecting frame is slidably arranged on the lower side of the supporting cylinder through a connecting assembly, and the detector is rotatably connected to the connecting frame;

[0009] The driving seat is arranged between the connecting frame and the detector.

[0010] Furthermore, the connection component includes:

[0011] a first motor, the first motor being mounted on one side of the support cylinder;

[0012] a connecting screw, the connecting screw being rotatably connected in the supporting cylinder, and the output end of the first motor being fixedly connected to the connecting screw;

[0013] A connecting plate, the connecting plate being threadedly connected to the connecting screw, the supporting cylinder being provided with a connecting port for sliding the connecting plate, and the connecting plate being fixedly connected to the connecting frame;

[0014] The connecting block is provided in two pieces, and the two connecting blocks are symmetrically connected to the connecting plate. The supporting cylinder is provided with a connecting groove for the connecting block to slide.

[0015] Furthermore, the support assembly includes:

[0016] A support frame, wherein two support frames are provided, the two support frames are symmetrically connected to the top of the movable bottom plate, and the two support frames are fixedly connected to the support cylinder;

[0017] A support plate, wherein the support plate is provided in plurality, and the plurality of support plates are respectively fixedly connected to the two support frames;

[0018] A support block is fixedly connected between the plurality of support plates.

[0019] Furthermore, the fixing seat includes:

[0020] a fixed screw, the fixed screw being threadedly connected to the movable base plate;

[0021] a rotating ball fixedly connected to the top end of the fixing screw;

[0022] A supporting bottom block, the supporting bottom block being fixedly connected to the bottom end of the fixing screw;

[0023] A sanding pad is fixedly connected to the bottom end of the supporting bottom block.

[0024] Furthermore, the driving seat includes:

[0025] a second motor, the second motor being mounted on the connecting frame;

[0026] A driven frame, the driven frame being fixedly connected between an output end of the second motor and the detector;

[0027] A driving column is fixedly connected to one side of the driven frame, and a driving groove for rotating the driving column is provided on the driven frame.

[0028] Furthermore, a mounting bracket is fixedly connected to one side of the support tube, and a mounting slot matching the first motor is provided on the mounting bracket.

[0029] Furthermore, a push handle is fixedly connected to one side of the movable base plate, and two universal wheels are symmetrically installed at the bottom end of the movable base plate.

[0030] The working principle and beneficial effects of the utility model are as follows:

[0031] 1. In the present invention, the push handle and the two universal wheels cooperate to facilitate the movement of the movable base plate, thereby facilitating the movement of the fixed base, the support cylinder, the connecting frame, the connecting assembly, the driving base, and the detector. At the same time, the detector can calculate the position of the diffraction point (i.e., the defect endpoint) by accurately measuring the time difference (i.e., the flight time) between the transmitted pulse and the received diffracted wave pulse, combined with the propagation speed of the ultrasonic wave in the workpiece material, thereby facilitating the detection of pipes at different positions, and further adjusting the detection position according to the position of the workpiece;

[0032] 2. In the present invention, multiple fixing seats are used to fix the movable base plate, so that the connecting assembly and the connecting frame can be fixed through the supporting assembly and the supporting tube, thereby improving the stability of the detector when detecting the workpiece;

[0033] 3. In the present invention, the cooperation between the support tube and the connecting assembly facilitates the movement of the connecting frame, thereby facilitating the movement of the detector, thereby facilitating the adjustment of the detection range according to the specifications of the workpiece, and further facilitating the full-scale detection of the workpiece;

[0034] 4. In the present invention, the cooperation between the connecting frame and the driving seat facilitates the rotation of the detector, so as to adjust the detection angle and facilitate multi-angle detection of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0037] Figure 2 This is a cross-sectional structural diagram of the support cylinder, connecting plate and driven frame of the utility model;

[0038] Figure 3 This is a schematic diagram of the structure of the support tube, support bottom block and sanding pad of the utility model;

[0039] Figure 4 This is a schematic diagram of the structure of the detector, driven frame and driving column of the utility model.

[0040] In the figure: 1. Detector; 2. Moving base plate; 3. Support cylinder; 4. Connecting frame; 5. First motor; 6. Connecting screw; 7. Connecting plate; 8. Connecting block; 9. Support frame; 10. Support plate; 11. Support block; 12. Fixed screw; 13. Rotating ball; 14. Support base block; 15. Sanding pad; 16. Second motor; 17. Driven frame; 18. Driving column; 19. Mounting frame; 20. Push handle; 21. Universal wheel. DETAILED DESCRIPTION

[0041] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] like Figures 1 to 4 As shown, this embodiment proposes a portable detection device based on the time-of-flight diffraction method, including a detector 1, a movable base plate 2, a fixed base, a support tube 3, a connecting frame 4 and a driving base. The detector 1 is a TOFD detector. An ultrasonic probe is installed on the detector 1. When the ultrasonic probe transmits ultrasonic waves to the workpiece, the ultrasonic waves propagate in the workpiece. When encountering defects, in addition to the conventional reflection phenomenon, diffraction waves will be generated at the end points of the defects. These diffraction waves will propagate to the surroundings, and part of them will propagate back to the receiving probe. The TOFD detector 1 can calculate the position of the diffraction point (that is, the end point of the defect) by accurately measuring the time difference (that is, the flight time) between the transmitted pulse and the received diffraction wave pulse, combined with the propagation speed of the ultrasonic wave in the workpiece material. Moreover, since the position information of the two end points of the defect can be obtained, the size of the defect in the thickness direction of the workpiece, that is, the height information, can be determined more accurately. For example, on a flat plate with a thickness of T During workpiece inspection, the two probes are respectively located at relative positions on the upper and lower surfaces of the workpiece. After the ultrasonic wave is emitted, if there is a defect at a certain depth h, the depth h of the defect can be calculated through geometric relationships based on the time difference t of the diffraction wave and the longitudinal wave velocity u of the ultrasonic wave in the workpiece, and the height of the defect can also be calculated. There are multiple fixed seats, and multiple fixed seats are all arranged on the movable base plate 2. The support cylinder 3 is arranged on one side of the movable base plate 2 through the support assembly. The connecting frame 4 is slidably arranged on the lower side of the support cylinder 3 through the connecting assembly, and the detector 1 is rotatably connected to the connecting frame 4. The driving seat is arranged between the connecting frame 4 and the detector 1. A pushing handle 20 is fixedly connected to one side of the movable base plate 2, and two universal wheels 21 are symmetrically installed at the bottom end of the movable base plate 2. The universal wheels 21 are self-locking wheels. The pushing handle 20 and the two universal wheels 21 are used to facilitate the movement of the movable base plate 2. At the same time, the two universal wheels 21 are locked to facilitate the fixing of the movable base plate 2.

[0043] Specifically, the connecting assembly includes a first motor 5, a connecting screw 6, a connecting plate 7 and a connecting block 8. The first motor 5 is installed on one side of the support cylinder 3. The first motor 5 can perform forward and reverse motion. A mounting bracket 19 is fixedly connected to one side of the support cylinder 3. The mounting bracket 19 is provided with a mounting slot matching the first motor 5, which can stably install the first motor 5. The connecting screw 6 is rotatably connected to the support cylinder 3, and the output end of the first motor 5 is fixedly connected to the connecting screw 6. The connecting plate 7 is threadedly connected to the connecting screw 6. A connecting port for sliding the connecting plate 7 is provided on the support cylinder 3, and the connecting plate 7 is fixedly connected to the connecting bracket 4. There are two connecting blocks 8, and the two connecting blocks 8 are symmetrically connected to the connecting plate 7. A connecting groove for sliding the connecting block 8 is provided on the support cylinder 3. Through the cooperation of the connecting block 8 and the connecting groove, it is convenient for the connecting plate 7 to move stably in the connecting port.

[0044] By rotating the connecting screw 6 through the first motor 5, the connecting plate 7 can be moved in the supporting tube 3, so that the connecting plate 7 drives the connecting frame 4 to move stably, thereby adjusting the detection position of the detector 1.

[0045] Specifically, the support assembly includes a support frame 9, a support plate 10 and a support block 11. The support frame 9 is provided in two pieces, and the two support frames 9 are symmetrically connected to the top of the movable base plate 2, and the two support frames 9 are fixedly connected to the support cylinder 3. The support plate 10 is provided in multiple pieces, and the multiple support plates 10 are respectively fixedly connected to the two support frames 9, and the support block 11 is fixedly connected between the multiple support plates 10;

[0046] The cooperation of the support block 11 and the plurality of support plates 10 facilitates the stable support of the two support frames 9 , so that the two support frames 9 can stably support the support tube 3 , thereby stably supporting the detector 1 .

[0047] Specifically, the fixed base includes a fixed screw 12, a rotating ball 13, a supporting bottom block 14 and a grinding pad 15. The fixed screw 12 is threadedly connected to the movable base 2, the rotating ball 13 is fixedly connected to the top of the fixed screw 12, the supporting bottom block 14 is fixedly connected to the bottom end of the fixed screw 12, and the grinding pad 15 is fixedly connected to the bottom end of the supporting bottom block 14;

[0048] By rotating the ball 13 to drive the fixed screw 12 to rotate, the fixed screw 12 can be moved on the movable base plate 2, so that the supporting base block 14 can drive the sanding pad 15 to move, so that the sanding pad 15 contacts the ground, thereby making it easier for the supporting base block 14 and the fixed screw 12 to fix the movable base plate 2.

[0049] Specifically, the driving base includes a second motor 16, a driven frame 17 and a driving column 18. The second motor 16 is mounted on the connecting frame 4. The driven frame 17 is fixedly connected between the output end of the second motor 16 and the detector 1. The driving column 18 is fixedly connected to one side of the driven frame 17. The driven frame 17 is provided with a driving groove for rotating the driving column 18, which can increase the stability of the driven frame 17 driving the detector 1 to rotate.

[0050] By rotating the driven frame 17 via the second motor 16 , the driven frame 17 can drive the detector 1 to rotate, so as to adjust the detection angle.

[0051] In this embodiment, when it is necessary to inspect workpieces at different positions, the staff can push the pushing handle 20 to move the movable base plate 2 through the two universal wheels 21. When the movable base plate 2 moves to the appropriate position, the rotating ball 13 is rotated to make the fixed screw 12 drive the supporting bottom block 14 to move, so that the sanding pad 15 contacts the ground, so that multiple fixed screws 12, multiple supporting bottom blocks 14 and multiple sanding pads 15 fix the movable base plate 2, and then the second motor 16 is started to rotate the driven frame 17 so that the driven frame 17 drives the detector 1 to rotate, so that the detection angle can be adjusted. When the detection angle is completed, the first motor 5 is started to rotate the screw of the first motor 5 to move the connecting plate 7 in the supporting tube 3, so that the connecting frame 4 drives the detector 1 to move back and forth, so that the workpiece can be inspected in all directions.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable detection device based on time-of-flight diffraction method, comprising a detector (1), characterized in that: Also includes: Moving base plate (2); A fixed seat, wherein the fixed seat is provided in plurality, and the plurality of fixed seats are all provided on the movable base plate (2); A support cylinder (3), the support cylinder (3) being arranged on one side of the movable base plate (2) via a support assembly; A connecting frame (4), the connecting frame (4) is slidably arranged on the lower side of the support cylinder (3) through a connecting assembly, and the detector (1) is rotatably connected to the connecting frame (4); A drive seat is arranged between the connecting frame (4) and the detector (1).

2. A portable detection device based on time-of-flight diffraction method according to claim 1, characterized in that: The connection component includes: a first motor (5), the first motor (5) being installed on one side of the support cylinder (3); a connecting screw (6), the connecting screw (6) being rotatably connected in the supporting cylinder (3), and the output end of the first motor (5) being fixedly connected to the connecting screw (6); A connecting plate (7), the connecting plate (7) is threadedly connected to the connecting screw (6), the supporting cylinder (3) is provided with a connecting port for the connecting plate (7) to slide, and the connecting plate (7) is fixedly connected to the connecting frame (4); The connecting block (8) is provided in two pieces, and the two connecting blocks (8) are symmetrically connected to the connecting plate (7). The supporting cylinder (3) is provided with a connecting groove for the connecting block (8) to slide.

3. The portable detection device based on time-of-flight diffraction method according to claim 2, characterized in that: The support assembly comprises: A support frame (9), wherein two support frames (9) are provided, the two support frames (9) are symmetrically connected to the top of the movable base plate (2), and the two support frames (9) are fixedly connected to the support cylinder (3); A support plate (10), wherein the support plate (10) is provided in plurality, and the plurality of support plates (10) are respectively fixedly connected to the two support frames (9); A support block (11), wherein the support block (11) is fixedly connected between the plurality of support plates (10).

4. The portable detection device based on time-of-flight diffraction method according to claim 3, characterized in that: The fixing seat comprises: A fixed screw (12), wherein the fixed screw (12) is threadedly connected to the movable base plate (2); a rotating ball (13), wherein the rotating ball (13) is fixedly connected to the top end of the fixing screw (12); A supporting bottom block (14), wherein the supporting bottom block (14) is fixedly connected to the bottom end of the fixing screw (12); A sanding pad (15) is fixedly connected to the bottom end of the supporting bottom block (14).

5. The portable detection device based on time-of-flight diffraction method according to claim 4, characterized in that: The drive seat comprises: a second motor (16), the second motor (16) being mounted on the connecting frame (4); A driven frame (17), the driven frame (17) being fixedly connected between the output end of the second motor (16) and the detector (1); A driving column (18) is fixedly connected to one side of the driven frame (17), and a driving groove for the driving column (18) to rotate is provided on the driven frame (17).

6. The portable detection device based on time-of-flight diffraction method according to claim 5, characterized in that: A mounting frame (19) is fixedly connected to one side of the support tube (3), and a mounting slot matching the first motor (5) is provided on the mounting frame (19).

7. The portable detection device based on time-of-flight diffraction method according to claim 6, characterized in that: A push handle (20) is fixedly connected to one side of the movable base plate (2), and two universal wheels (21) are symmetrically mounted on the bottom end of the movable base plate (2).

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