A portable handheld thickness measuring device

Abstract

A kind of portable handheld thickness measuring device, including handle, the left end surface of the handle is symmetrically fixed with detection plate, two the wall of detection plate is symmetrically provided with up and down sliding groove, the up and down sliding groove is slidably provided with up and down sliding block, two the opposite surface of up and down sliding block is equipped with left and right flip reset mechanism;The force of the U-shaped rod down will make longitudinal flip shaft drive ring flip and transverse spring drive circular arc plate flip, and then through left and right flip reset mechanism, ring, front and back flip reset mechanism, circular arc plate makes detection probe to adjust angle, so that the detection surface of detection probe is closely contacted with the outer wall surface of pipe opening, solve the roughness due to manufacturing and pipe opening diameter change etc., and the uneven surface of the outer side of pipe diameter opening, the detection surface of probe is difficult to closely contact with the outer wall surface of pipe opening to be detected, especially in the distance between pipe opening and pipe opening is very small, detection space is very small, detection probe can enter with difficulty.

Description

Technical Field

[0001] This utility model relates to the field of metal detection, and in particular to a convenient handheld thickness measuring device. Background Technology

[0002] A thickness gauge is an instrument used to measure the thickness of materials and objects. In industrial production, it is often used to continuously or samplely measure the thickness of products (such as steel plates, steel strips, films, paper, metal foils, etc.). These instruments include radioactive thickness gauges that utilize the penetrating properties of alpha, beta, and gamma rays; ultrasonic thickness gauges that utilize changes in ultrasonic frequency; eddy current thickness gauges that utilize the eddy current principle; and thickness gauges that utilize mechanical contact measurement principles. Ultrasonic thickness measurement is the most convenient and common method. Currently, when ultrasonically testing the thickness of metal pipe openings, a person often holds the probe so that the center baseline of the probe surface is perpendicular to the line of contact between the circular probe and the outer wall of the pipe opening. However, in actual operation, it is often difficult to quickly and accurately find the intersection of the two lines of contact. The probe may deviate, causing the edge of the circular probe to contact the outer wall of the pipe opening, resulting in inaccurate measurement and low efficiency. At the same time, due to reasons such as rough manufacturing and pipe diameter changes, the outer surface of the pipe opening is not flat, making it difficult for the probe detection surface to fit tightly against the outer wall of the pipe opening. The position of the probe detection surface needs to be adjusted, especially when the distance between pipe openings is very small, the detection space is very small, and the detection probe can barely enter. Adjusting the angle by hand with the probe is often very troublesome. Utility Model Content

[0003] The purpose of this invention is to provide a convenient handheld thickness measuring device to solve the problems mentioned in the background art.

[0004] The technical problem solved by this utility model is achieved through the following technical solution: A portable handheld thickness measuring device includes a handle, characterized in that: symmetrically fixed detection plates are provided on the left end of the handle; symmetrically arranged upper and lower sliding grooves are provided on the walls of the two detection plates; upper and lower sliders slide within the upper and lower sliding grooves; and each of the two upper and lower sliders has a left-right flip-reset mechanism on its opposite face. The left-right flip-reset mechanism includes: a longitudinal flip shaft rotatably mounted on the end face of the upper and lower sliders; a longitudinal spring is sleeved on the outer surface of the longitudinal flip shaft; one end of the longitudinal spring is fixedly connected to the upper and lower sliders; and a ring is provided between the two detection plates, with the ring connected to one end face of each of the two longitudinal flip shafts respectively. The ring is also connected to the two longitudinal springs. One end is fixedly connected, and a front-to-back flipping and resetting mechanism is provided on the left side wall inside the ring. The front-to-back flipping and resetting mechanism includes: a transverse flipping shaft rotatably provided on the wall of the ring, a transverse spring sleeved on the surface of the transverse flipping shaft, an arc plate fixedly installed at the other end of the transverse flipping shaft, and the two ends of the transverse spring being fixedly installed to the ring and the arc plate respectively. Clamping plates are provided on the front and rear walls of the inner cavity of the arc plate through compression springs. A detection probe is clamped between the two clamping plates. Arc gripping plates are symmetrically rotated on the lower end faces of the two detection plates. A control linkage mechanism is provided in the inner cavity of the handle. The control linkage mechanism can drive the detection probe to move downward for detection.

[0005] Preferably, the arc-shaped gripper is configured in an arc shape, so that the arc-shaped gripper can make close contact with the tube to be tested.

[0006] Preferably, an anti-slip pad is installed on the wall surface of the arc-shaped gripper to increase friction.

[0007] Preferably, a rotating shaft is rotatably provided on the inner wall of the grip, and a sliding plate is fixedly installed on the other end face of the rotating shaft. A portion of the sliding plate extends out of the outer side of the grip. A turntable is rotatably provided on the inner wall of the grip, and the turntable is located above the sliding plate. A sliding groove is provided on the left side wall of the turntable, and a slider is slidably installed in the sliding groove. A spring is fixedly installed between the slider and the inner wall of the sliding groove. The slider and the turntable are connected by a hinge to a driven rod, and the turntable and one end face of the sliding plate are connected by a hinge to a driving rod.

[0008] Preferably, the slider extends to the outside of the grip, a motion plate is fixedly installed on the left end face of the slider, the motion plate is located outside the grip, a U-shaped rod is fixedly installed on the upper end face of the motion plate, and return springs are fixedly installed between the two ends of the U-shaped rod and the two upper and lower sliders respectively. The front and rear end faces of the motion plate are hinged to the two arc-shaped gripping plates through telescopic return rods.

[0009] The advantages and positive effects of this utility model are: 1. This utility model uses a ring and an arc plate set at the center between two detection plates. The detection probe held by the arc plate is always at the center between the two detection plates, so that the center line of the detection surface of the detection probe is perpendicular to the line of contact between the detection surface of the detection probe and the outer wall of the pipe opening. This is the most standardized and accurate way to use the measuring instrument probe, avoiding the two lines not being perpendicular due to hand instability, and ensuring the accuracy and efficiency of the measurement. 2. This utility model utilizes the downward pressure of the U-shaped rod to cause the longitudinal flipping shaft to flip the ring and the transverse spring to flip the arc plate. Then, through the left-right flipping reset mechanism, the ring, the front-back flipping reset mechanism, and the arc plate, the detection probe adjusts its angle, ensuring close contact between the detection probe's detection surface and the outer wall of the pipe opening. This solves the problem of uneven outer surfaces of the pipe opening due to rough manufacturing or pipe diameter variations, making it difficult for the probe's detection surface to fit tightly against the outer wall of the pipe opening, especially when the distance between pipe openings is small and the detection space is limited, allowing the detection probe to barely fit inside. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the overall structure of a convenient handheld thickness measuring device according to the present invention. Figure 2 This utility model Figure 1 Schematic diagram of the structure at point AA; Figure 3 This utility model Figure 1 Schematic diagram of the structure at point BB.

[0012] The markings in the attached diagram are described as follows: 10. Handle; 11. Rotating shaft; 12. Sliding plate; 13. Turntable; 14. Driving rod; 15. Driven rod; 16. Slide groove; 17. Slider; 18. Spring; 19. Detection plate; 20. Arc gripper; 21. Arc plate; 22. Detection probe; 23. Clamping plate; 24. Ring; 25. Lateral flipping shaft; 26. Lateral spring; 27. Upper and lower sliding grooves; 28. Upper and lower sliders; 29. ​​Longitudinal flipping shaft; 30. Longitudinal spring; 31. U-shaped rod; 32. Moving plate; 33. Telescopic reset rod; 34. Compression spring; 35. Reset spring; 36. Left and right flipping reset mechanism; 37. Control linkage mechanism; 38. Front and back flipping reset mechanism. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0014] The following is combined with Figure 1-3 This utility model will be described in detail below. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The directions of front, back, left, right, up, and down in the view are consistent. Figure 1 This is a front view of the device of this utility model. Figure 1 The directions shown are consistent with the front-facing, back-facing, left-right, up-down directions of the device.

[0015] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: Please see Figure 1 This utility model provides an embodiment of a convenient handheld thickness measuring device, comprising a handle 10, characterized in that: detection plates 19 are symmetrically fixedly arranged on the left end face of the handle 10, and upper and lower sliding grooves 27 are symmetrically arranged on the walls of the two detection plates 19. Upper and lower sliders 28 are slidably arranged in the two upper and lower sliding grooves 27. A left and right flipping reset mechanism 36 is provided on the opposite face of each of the two upper and lower sliders 28. The left and right flipping reset mechanism 36 includes: a longitudinal flipping shaft 29 rotatably mounted on one end face of the upper and lower sliders 28; a longitudinal spring 30 is sleeved on the outer surface of the longitudinal flipping shaft 29; one end of the longitudinal spring 30 is fixedly connected to the upper and lower sliders 28; and a ring 24 is provided between the two detection plates 19, the ring 24 being connected to one end face of each of the two longitudinal flipping shafts 29. The other end of the longitudinal spring 30 is fixedly connected. A front-to-back flipping and reset mechanism 38 is provided on the left side wall inside the ring 24. The front-to-back flipping and reset mechanism 38 includes: a transverse flipping shaft 25 rotatably provided on the wall of the ring 24; a transverse spring 26 sleeved on the surface of the transverse flipping shaft 25; an arc plate 21 fixedly installed at the other end of the transverse flipping shaft 25; the two ends of the transverse spring 26 are fixedly installed to the ring 24 and the arc plate 21 respectively; clamping plates 23 are provided on the front and rear walls of the inner cavity of the arc plate 21 through compression springs 34; a detection probe 22 is clamped between the two clamping plates 23; arc gripping plates 20 are symmetrically rotated on the lower end faces of the two detection plates 19; a control linkage mechanism 37 is provided in the inner cavity of the handle 10; the control linkage mechanism 37 can drive the detection probe 22 to move downward for detection.

[0016] In another embodiment, the arc-shaped gripper 20 is configured in an arc shape, so that the arc-shaped gripper 20 can make close contact with the tube to be tested.

[0017] In another embodiment, an anti-slip pad is installed on the wall surface of the arc-shaped gripper 20 to increase friction.

[0018] In another embodiment, a rotating shaft 11 is rotatably mounted on the inner wall of the grip 10, and a sliding plate 12 is fixedly mounted on the other end face of the rotating shaft 11. A portion of the sliding plate 12 extends out of the outer side of the grip 10. A turntable 13 is rotatably mounted on the inner wall of the grip 10, and the turntable 13 is located above the sliding plate 12. A sliding groove 16 is provided on the left side wall of the turntable 13, and a slider 17 is slidably mounted in the sliding groove 16. A spring 18 is fixedly mounted between the slider 17 and the inner wall of the sliding groove 16. The slider 17 and the turntable 13 are connected by a driven rod 15 through a hinge, and the turntable 13 and one end face of the sliding plate 12 are connected by a driving rod 14 through a hinge.

[0019] In another embodiment, the slider 17 extends to the outside of the grip 10, and a motion plate 32 is fixedly installed on the left end face of the slider 17. The motion plate 32 is located outside the grip 10, and a U-shaped rod 31 is fixedly installed on the upper end face of the motion plate 32. The two ends of the U-shaped rod 31 are respectively fixedly installed with return springs 35 between the front and rear upper and lower sliders 28. The front and rear end faces of the motion plate 32 are hinged to the front and rear arc gripping plates 20 through telescopic return rods 33.

[0020] In specific implementation; when using this device, the detection probe 22 is placed in the inner cavity of the arc plate 21, and the two compression springs 34 are squeezed. The two compression springs 34 drive the clamping plates 23 connected to them to hold the detection probe 22 and prevent the detection probe 22 from shaking. Then, the operator holds the handle 10 so that the detection probe 22 is above the outer wall of the tube to be tested. Then, the user presses the sliding plate 12 with his / her finger. The sliding plate 12 rotates around the rotating shaft 11. The rotating shaft 11 drives the turntable 13 to rotate counterclockwise. The turntable 13 drives the slider 17 to move downward under the restriction of the slide groove 16 through the driven rod 15, thereby driving the moving plate 32 to move downward. The downward movement of the moving plate 32 drives the two telescopic reset rods 33 to move, thereby causing the two arc-shaped gripping plates 20 to move towards the center and clamp the pipe to be tested, fixing the entire device above the pipe opening. At the same time as the moving plate 32 moves downward, it also drives the U-shaped rod 31 to move downward. The downward movement of the U-shaped rod 31 compresses the reset spring 35, causing the upper and lower sliders 28 to slide downward in the upper and lower sliding grooves 27, thereby driving the ring 24 and the arc plate 21 to move downward as a whole, so that the detection surface of the lower surface of the detection probe 22 contacts the pipe opening, and then the thickness of the pipe opening is measured. Since the ring 24 and the arc plate 21 are located at the center of the two detection plates 19, the detection probe 22 clamped by the arc plate 21 is also always located at the center of the two detection plates 19. Therefore, the center reference line of the detection surface of the detection probe 22 is exactly perpendicular to the line of contact between the detection surface of the detection probe 22 and the outer wall of the pipe opening. This is the most standardized and accurate way to use the measuring instrument probe, avoiding the two lines not being perpendicular due to hand instability, and ensuring the accuracy of the measurement. Meanwhile, due to rough manufacturing and pipe diameter variations, the outer surface of the pipe opening is often not flat when inspecting it. It is difficult for the probe's detection surface to fit tightly against the outer wall of the pipe opening, especially when the distance between the pipe openings is very small and the detection space is very small, and the probe can barely enter. When the detection surface of the probe 22 encounters the outer wall of the pipe opening that cannot fit tightly, it will tilt under the downward pressure of the U-shaped rod 31. At this time, the longitudinal flipping shaft 29 in the left-right flipping reset mechanism 36 drives the ring 24 to flip, and the transverse spring 26 in the front-back flipping reset mechanism 38 drives the arc plate 21 to flip. This allows the probe 22 to adjust its angle through the left-right flipping reset mechanism 36, the ring 24, the front-back flipping reset mechanism 38, and the arc plate 21, so that the detection surface of the probe 22 can fit tightly against the outer wall of the pipe opening.

[0021] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A portable handheld thickness measuring device, comprising a handle (10), characterized in that: The handle (10) has symmetrically fixed detection plates (19) on the front and back of its left end. The walls of the two detection plates (19) are symmetrically provided with upper and lower sliding grooves (27). Upper and lower sliders (28) slide within the upper and lower sliding grooves (27). Each of the two upper and lower sliders (28) has a left-right flipping reset mechanism (36) on its opposite face. The left-right flipping reset mechanism (36) includes: a longitudinal flipping shaft (29) rotatably mounted on the end face of the upper and lower sliders (28); a longitudinal spring (30) sleeved on the outer surface of the longitudinal flipping shaft (29); one end of the longitudinal spring (30) fixedly connected to the upper and lower sliders (28); a ring (24) between the front and rear detection plates (19); the ring (24) is connected to one end face of each of the front and rear longitudinal flipping shafts (29); and the ring (24) is fixedly connected to the other end of each of the front and rear longitudinal springs (30). The inner left side wall is provided with a front-to-back flipping reset mechanism (38). The front-to-back flipping reset mechanism (38) includes: a transverse flipping shaft (25) rotatably provided on the wall of the ring (24), a transverse spring (26) sleeved on the surface of the transverse flipping shaft (25), an arc plate (21) fixedly installed at the other end of the transverse flipping shaft (25), and the two ends of the transverse spring (26) fixedly installed to the ring (24) and the arc plate (21) respectively. The front and rear walls of the inner cavity of the arc plate (21) are provided with clamping plates (23) through compression springs (34). A detection probe (22) is clamped between the two clamping plates (23). The lower end faces of the two detection plates (19) are symmetrically rotated with arc gripping plates (20). The inner cavity of the handle (10) is provided with a control linkage mechanism (37). The control linkage mechanism (37) can drive the detection probe (22) to move downward for detection.

2. The portable handheld thickness measuring device according to claim 1, characterized in that: The arc gripper (20) is configured in an arc shape.

3. A portable handheld thickness measuring device according to claim 2, characterized in that: Anti-slip pads are installed on the wall surface of the arc gripper (20).

4. The portable handheld thickness measuring device according to claim 1, characterized in that: A rotating shaft (11) is rotatably mounted on the inner wall of the grip (10). A sliding plate (12) is fixedly mounted on the other end face of the rotating shaft (11). A portion of the sliding plate (12) extends out of the outer side of the grip (10). A turntable (13) is rotatably mounted on the inner wall of the grip (10). The turntable (13) is located above the sliding plate (12). A sliding groove (16) is provided on the left side wall of the turntable (13). A slider (17) is slidably mounted in the sliding groove (16). A spring (18) is fixedly mounted between the slider (17) and the inner wall of the sliding groove (16). The slider (17) and the turntable (13) are connected by a driven rod (15) through a hinge. The turntable (13) and one end face of the sliding plate (12) are connected by a driving rod (14) through a hinge.

5. A portable handheld thickness measuring device according to claim 4, characterized in that: The slider (17) extends to the outside of the grip (10). A motion plate (32) is fixedly installed on the left end face of the slider (17). The motion plate (32) is located outside the grip (10). A U-shaped rod (31) is fixedly installed on the upper end face of the motion plate (32). Reset springs (35) are fixedly installed between the two ends of the U-shaped rod (31) and the two upper and lower sliders (28) respectively. The front and rear end faces of the motion plate (32) are hinged to the two arc grippers (20) through telescopic reset rods (33).

Images