Pen type electromagnetic ultrasonic thickness gauge with waveform display

Abstract

The utility model relates to the technical field of ultrasonic thickness gauges, in particular to a pen type electromagnetic ultrasonic thickness gauge with waveform display, which comprises a thickness gauge body and a display screen arranged on the thickness gauge body, a circular tube is fixedly mounted on the thickness gauge body, and a hidden groove is arranged on the circular tube; a protection assembly used for preventing the display screen from being abraded and scratched is arranged in the hidden groove and comprises a transparent cover rotationally connected into the circular pipe. The display screen on the thickness gauge body can be protected through the transparent cover by arranging the protection assembly, the display screen is prevented from being abraded and scratched to cause unobservable numerical waveform, the positioning assembly and the protection assembly are matched, the rotating rod is rotated, and the transparent cover rotates in the circular tube through the meshing effect of the main gear and the driven wheel, so that the thickness gauge is more accurate. Therefore, the worn and scratched position of the transparent cover can be rotated into the circular tube, and the intact and non-worn position corresponds to the display screen, so that the display screen can be observed continuously when the thickness gauge body is used.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic thickness gauges, in particular to a pen-type electromagnetic ultrasonic thickness gauge with waveform display. Background Technique

[0002] An electromagnetic ultrasonic thickness gauge is a device for thickness measurement based on the principle of electromagnetic ultrasound. It combines the advantages of electromagnetics and ultrasonic technologies. Without contacting the surface of the object to be measured, it can excite ultrasonic waves through an electromagnetic field and detect its reflected signal, thereby calculating the thickness of the material. The pen-type electromagnetic ultrasonic thickness gauge with waveform display utilizes the principle of electromagnetic ultrasound, measures the thickness of the material by emitting and receiving shear waves (transverse waves), and displays the measurement waveform on the display screen in real time.

[0003] When most of the existing pen-type electromagnetic ultrasonic thickness gauges with waveform display are in use, the waveform is displayed through the display screen on their bodies. However, after long-term use in outdoor environments with poor conditions, factory inspections, or improper use by workers, the display screen becomes worn and scratched. As a result, when viewing the waveform on the display screen, the staff cannot clearly read the numerical value and view the waveform, which in turn affects the normal use of the pen-type electromagnetic ultrasonic thickness gauge and makes the inspection work unable to proceed normally.

[0004] Therefore, a pen-type electromagnetic ultrasonic thickness gauge with waveform display is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pen-type electromagnetic ultrasonic thickness gauge with waveform display, so as to solve the problem that when most of the existing pen-type electromagnetic ultrasonic thickness gauges with waveform display are in use, the waveform is displayed through the display screen on their bodies. However, after long-term use in outdoor environments with poor conditions, factory inspections, or improper use by workers, the display screen becomes worn and scratched. As a result, when viewing the waveform on the display screen, the staff cannot clearly read the numerical value and view the waveform, which in turn affects the normal use of the pen-type electromagnetic ultrasonic thickness gauge and makes the inspection work unable to proceed normally.

[0006] To achieve the above object, the present utility model provides the following technical solution: A pen-type electromagnetic ultrasonic thickness gauge with waveform display, including a thickness gauge body and a display screen provided on the thickness gauge body. A circular tube is fixedly installed on the thickness gauge body, and a hidden groove is provided on the circular tube; a protection component for preventing the display screen from being worn and scratched is provided in the hidden groove. The protection component includes a transparent cover rotatably connected in the circular tube. One end of the transparent cover is fixedly connected with a driven wheel, and a main gear is engaged with the driven wheel. A rotating rod is rotatably connected in the circular tube; a positioning component for restricting the rotation of the transparent cover is further provided on one side of the circular tube. The positioning component includes a positioning frame provided in the rotating rod. A plurality of limiting grooves are opened on the circular tube, and a circular ring is fixedly connected to the positioning frame.

[0007] Preferably, a connecting rod is fixedly installed on the main gear, and a cleaning cotton rod is fixedly connected to the connecting rod, and the cleaning cotton rod is in close contact with the transparent cover.

[0008] Preferably, an inner groove is opened in the rotating rod, the positioning frame is slidably connected in the inner groove, and the positioning frame is embedded in the limiting groove.

[0009] Preferably, a spring and a telescopic rod are provided in the inner groove, and the spring and the telescopic rod are fixedly connected between the rotating rod and the positioning frame.

[0010] Preferably, a rotating plate is fixedly connected to the rotating rod, and an anti-slip rubber pad is provided on the rotating plate.

[0011] Preferably, a positioning rod is fixedly connected to the rotating plate, a rubber bump is fixedly connected to the positioning rod, and concave holes corresponding to the limiting grooves one by one are opened on the circular tube, and the concave holes are adapted to the rubber bumps.

[0012] Preferably, a baffle is rotatably connected to the positioning rod, a torsion spring is provided between the baffle and the positioning rod, and a pull rod is rotatably connected to the baffle.

[0013] Preferably, a groove is opened on the thickness gauge body, a protective cover is slidably connected to the thickness gauge body, and a rubber strip adapted to the groove is provided on the protective cover.

[0014] The beneficial effects of the present utility model:

[0015] The utility model can protect the display screen on the thickness gauge body through the transparent cover by setting a protection component, preventing the display screen from being worn and scratched so that the numerical value waveform cannot be observed. With the cooperation of the positioning component and the protection component, the rotating rod is rotated, and through the meshing action of the main gear and the driven wheel, the transparent cover rotates in the circular tube, so that the worn and scratched position of the transparent cover can rotate into the circular tube, and the intact and unworn position corresponds to the display screen, facilitating the continuous observation of the display screen when using the thickness gauge body. The rotation of the rotating rod drives the positioning rod and the positioning frame to rotate. Thus, under the damping force provided by the cooperation of the rubber bumps on the positioning rod and the concave holes, the staff can quickly and accurately reset and move the positioning frame into the limiting groove, so that the rotating rod cannot rotate under the cooperation of the positioning frame and the limiting groove, and further the transparent cover is kept stable and cannot rotate. The whole device ensures that the display screen on the thickness gauge body will not be worn and scratched, resulting in the inability to view the numerical value waveform, and the transparent cover for protecting the display screen can continue to be used after being worn, without affecting the observation of the numerical value waveform. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only those of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of a pen-type electromagnetic ultrasonic thickness gauge with waveform display according to an embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the circular tube of a pen-type electromagnetic ultrasonic thickness gauge with waveform display according to an embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of a pen-type electromagnetic ultrasonic thickness gauge with waveform display according to an embodiment of the present utility model Figure 2 The enlarged schematic diagram at position A;

[0020] Figure 4 It is a schematic diagram of the positioning rod structure of a pen-type electromagnetic ultrasonic thickness gauge with waveform display according to an embodiment of the present utility model;

[0021] Figure 5 It is a schematic diagram of a partial structure of the rotating rod of a pen-type electromagnetic ultrasonic thickness gauge with waveform display according to an embodiment of the present utility model;

[0022] Figure 6 It is a schematic diagram of the protective cover structure of a pen-type electromagnetic ultrasonic thickness gauge with waveform display according to an embodiment of the present utility model.

[0023] The labels in the figure are: 1, thickness gauge body; 2, circular tube; 3, hidden groove; 4, transparent cover; 5, driven wheel; 6, main gear; 7, rotating rod; 8, positioning frame; 9, limiting groove; 10, circular ring; 11, connecting rod; 12, cleaning cotton rod; 13, inner groove; 14, spring; 15, telescopic rod; 16, rotating plate; 17, positioning rod; 18, rubber bump; 19, concave hole; 20, baffle; 21, pull rod; 22, groove; 23, protective cover; 24, rubber strip. Specific implementation manner

[0024] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with specific embodiments.

[0025] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those with general skills in the field to which the present utility model belongs. The "first", "second" and similar words used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. "Connection" or "connection" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0026] As Figures 1 to 6 shown, a pen-type electromagnetic ultrasonic thickness gauge with waveform display provided by a specific embodiment of the present utility model includes a thickness gauge body 1 and a display screen provided on the thickness gauge body 1. A circular tube 2 is fixedly installed on the thickness gauge body 1, and a hidden groove 3 is provided on the circular tube 2; a protection component for preventing the display screen from being worn and scratched is provided in the hidden groove 3. By setting the protection component, the display screen can be protected to prevent the phenomenon that the display screen is worn and scratched during use, resulting in the inability to normally read the value or view the waveform. The protection component includes a transparent cover 4 rotatably connected in the circular tube 2. The transparent cover 4 can protect the display screen located on the thickness gauge body 1 from wear and scratch. One end of the transparent cover 4 is fixedly connected to a driven wheel 5, and a main gear 6 is engaged with the driven wheel 5. A rotating rod 7 is rotatably connected in the circular tube 2; a positioning component for restricting the rotation of the transparent cover 4 is provided on one side of the circular tube 2. By setting the positioning component, the rotated transparent cover 4 can be positioned to prevent the phenomenon of unstable rotation. The positioning component includes a positioning frame 8 provided in the rotating rod 7, and a plurality of limiting grooves 9 are opened on the circular tube 2. A circular ring 10 is fixedly connected to the positioning frame 8.

[0027] As Figures 2 to 5 shown, specifically, a connecting rod 11 is fixedly installed on the main gear 6. An inner groove 13 is formed in the rotating rod 7. The positioning frame 8 is slidably connected in the inner groove 13, and the positioning frame 8 is embedded in the limiting groove 9. A spring 14 and a telescopic rod 15 are arranged in the inner groove 13, and the spring 14 and the telescopic rod 15 are fixedly connected between the rotating rod 7 and the positioning frame 8. No matter in which environment the thickness gauge body 1 is used, the provided transparent cover 4 can protect the display screen and prevent it from being worn and scratched. When the transparent cover 4 itself is scratched, the ring 10 is pulled to drive the positioning frame 8 to move in the inner groove 13. The moving positioning frame 8 gradually disengages from the limiting groove 9. A baffle 20 is rotatably connected to the positioning rod 17, and a torsion spring is arranged between the baffle 20 and the positioning rod 17. A pull rod 21 is rotatably connected to the baffle 20. During the process of pulling the ring 10, the ring 10 gradually contacts the baffle 20 and applies pressure to the baffle 20, so that the baffle 20 compresses the torsion spring. The torsion spring rotates under force to generate a reaction force, and then the baffle 20 enters the positioning rod 17 until the ring 10 moves away from the baffle 20 during the movement and no longer applies pressure to it, so that the baffle 20 rotates and resets under the reaction force of the torsion spring. During the movement of the ring 10, the spring 14 and the telescopic rod 15 are stressed and contracted, and the spring 14 generates a reaction force. The reset baffle 20 blocks the ring 10, so that the baffle 20 cannot move under the reaction force of the spring 14.

[0028] As Figures 2 to 5As shown in the figure, specifically, a rotating plate 16 is fixedly connected to the rotating rod 7, and an anti-slip rubber pad is provided on the rotating plate 16. The setting of the anti-slip rubber pad increases the friction force when rotating the rotating plate 16, making it easier to rotate the rotating plate 16. A positioning rod 17 is fixedly connected to the rotating plate 16, and a rubber bump 18 is fixedly connected to the positioning rod 17. Concave holes 19 corresponding to the limiting grooves 9 one by one are formed on the round tube 2, and the concave holes 19 are adapted to the rubber bumps 18. After the positioning frame 8 disengages from the limiting groove 9, rotating the rotating plate 16 drives the rotating rod 7 to rotate. Thus, the rotating rod 7 drives the main gear 6 to rotate through the connecting rod 11, and the rotation of the main gear 6 drives the driven wheel 5 to rotate. At this time, the driven wheel 5 causes the transparent cover 4 to rotate. The rotating transparent cover 4 can rotate the scratched position of itself into the round tube 2, so that the intact position of the transparent cover 4 corresponds to the display screen. Furthermore, when the thickness gauge body 1 is used, watching the display screen is not affected. During the process of the rotating plate 16 driving the rotating rod 7 to rotate, the positioning frame 8 in the rotating rod 7 and the positioning rod 17 on the rotating plate 16 both rotate accordingly. The rubber bump 18 on the positioning rod 17 has elasticity itself, so that the rubber bump 18 in the concave hole 19 can rotate following the positioning rod 17. During the rotation process, when the rubber bump 18 enters the concave holes 19 at different positions, the staff feels a damping force during the process of rotating the rotating rod 7, which can be used as a signal to stop rotating the rotating rod 7. Furthermore, it is convenient for the following positioning frame 8 to accurately enter the limiting groove 9.

[0029] As Figures 2 to 6As shown, specifically, after adjusting the angle of the rotating transparent cover 4, the staff can select the position to stop rotating the rotating rod 7 according to the damping force generated by the rubber bumps 18 and the concave holes 19. After stopping the rotation of the rotating rod 7, pull the pull rod 21 to make the baffle 20 rotate into the positioning rod 17, and the torsion spring rotates under force to generate a reaction force. At this time, the baffle 20 entering the positioning rod 17 no longer blocks the ring 10. Therefore, the ring 10 pushes the positioning frame 8 to move back to its original position under the reaction force of the spring 14. After the ring 10 moves back to its original position, the baffle 20 returns to its original position under the reaction force of the torsion spring. The positioning frame 8 moves back to its original position and enters the limit groove 9. Thus, the positioning frame 8 entering the limit groove 9 limits the rotation of the rotating rod 7 and makes it unable to rotate, and further makes the transparent cover 4 stable and unable to rotate. A cleaning cotton rod 12 is fixedly connected to the connecting rod 11, and the cleaning cotton rod 12 is in close contact with the transparent cover 4. The setting of the cleaning cotton rod 12 enables the cleaning cotton rod 12 to rotate along with the rotation of the connecting rod 11 when the connecting rod 11 rotates. Thus, the surface of the transparent cover 4 can be cleaned to remove the adhered dust on the surface, enabling the staff to observe the display screen more clearly. A groove 22 is provided on the thickness gauge body 1. A protective cover 23 is slidably connected to the thickness gauge body 1, and a rubber strip 24 adapted to the groove 22 is provided on the protective cover 23. The protective cover 23 can be clamped into the groove 22 inside the machine through the rubber strip 24, so that it can be limited and clamped on the thickness gauge body 1. Furthermore, the test head of the thickness gauge body 1 is protected by the protective cover 23.

[0030] Those of ordinary skill in the art should understand that the discussion of any embodiment above is only exemplary, and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0031] The present invention aims to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pen-type electromagnetic ultrasonic thickness gauge with waveform display, comprising a thickness gauge body (1) and a display screen provided on the thickness gauge body (1), characterized in that, A circular tube (2) is fixedly installed on the thickness gauge body (1), and a hidden groove (3) is provided on the circular tube (2). A protective component for preventing the display screen from being worn and scratched is provided in the hidden groove (3). The protective component includes a transparent cover (4) rotatably connected in the circular tube (2). One end of the transparent cover (4) is fixedly connected to a driven wheel (5). A main gear (6) is engaged with the driven wheel (5). A rotating rod (7) is rotatably connected in the circular tube (2). It further includes a positioning component provided on one side of the circular tube (2) for restricting the rotation of the transparent cover (4). The positioning component includes a positioning frame (8) provided in the rotating rod (7). A number of limiting grooves (9) are formed on the circular tube (2). A circular ring (10) is fixedly connected to the positioning frame (8).

2. The pen-type electromagnetic ultrasonic thickness gauge with waveform display according to claim 1, wherein A connecting rod (11) is fixedly installed on the main gear (6). A cleaning cotton rod (12) is fixedly connected to the connecting rod (11), and the cleaning cotton rod (12) is in close contact with the transparent cover (4).

3. The pen-type electromagnetic ultrasonic thickness gauge with waveform display according to claim 1, characterized in that, An inner groove (13) is formed in the rotating rod (7). The positioning frame (8) is slidably connected in the inner groove (13), and the positioning frame (8) is embedded in the limiting groove (9).

4. The pen-type electromagnetic ultrasonic thickness gauge with waveform display according to claim 3, characterized in that, A spring (14) and a telescopic rod (15) are provided in the inner groove (13), and the spring (14) and the telescopic rod (15) are fixedly connected between the rotating rod (7) and the positioning frame (8).

5. The pen-type electromagnetic ultrasonic thickness gauge with waveform display according to claim 1, characterized in that, A rotating plate (16) is fixedly connected to the rotating rod (7), and an anti-slip rubber pad is provided on the rotating plate (16).

6. The pen-type electromagnetic ultrasonic thickness gauge with waveform display according to claim 5, wherein, A positioning rod (17) is fixedly connected to the rotating plate (16). Rubber bumps (18) are fixedly connected to the positioning rod (17). Concave holes (19) corresponding to the limiting grooves (9) one by one are formed on the circular tube (2), and the concave holes (19) are adapted to the rubber bumps (18).

7. The pen - type electromagnetic ultrasonic thickness gauge with waveform display according to claim 6, characterized in that, A baffle (20) is rotatably connected to the positioning rod (17), and a torsion spring is provided between the baffle (20) and the positioning rod (17). A pull rod (21) is rotatably connected to the baffle (20).

8. A pen-type electromagnetic ultrasonic thickness gauge with waveform display according to claim 1, characterized in that, A groove (22) is formed on the thickness gauge body (1). A protective cover (23) is slidably connected to the thickness gauge body (1), and a rubber strip (24) adapted to the groove (22) is provided on the protective cover (23).

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