Novel coating film thickness gauge

Abstract

The utility model relates to the technical field of film thickness gauges, and discloses a novel coating film thickness gauge which comprises a shell, the bottom of the shell is connected with a protective cover through an elastic structure, the protective cover surrounds the outer surface of a test probe and completely wraps the test probe, one side of the elastic structure is fixedly provided with a speed measuring device, and the other side of the elastic structure is fixedly provided with a sensor. And a blocking device is fixedly mounted on the other side of the elastic structure. The protective cover is installed on the periphery of the test probe through the elastic structure, the speed measuring device is installed on the elastic structure, the speed measuring device is matched with the micro-processor to set the upward speed, and if the moving speed of the test device driven by the protective cover exceeds the set speed, the test device is started to move. And the microprocessor cooperates with the grid device to intercept the protective cover, so that the protective cover is prevented from continuing to move upwards, the protective cover protects the test probe, damage to the test probe due to falling of the film thickness gauge is avoided, and the service life of the test probe is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of film thickness instruments, and more specifically to a novel coating film thickness instrument. Background Art

[0002] A film thickness gauge, also called a film thickness tester, is generally used to test the thickness of metal surface coatings. Film thickness gauges are divided into handheld and desktop types. The handheld type is more convenient to use. The magnetic induction principle of the handheld type is to use the size of the magnetic flux from the probe through the non-ferromagnetic coating and into the ferromagnetic substrate to determine the coating thickness.

[0003] Currently, the test probe in the film thickness meter lacks a protective structure. Therefore, when the film thickness meter falls, the test probe is easily damaged as it collides with the ground, which reduces the service life of the test probe. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a novel coating film thickness meter to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a novel coating film thickness meter, comprising a shell, a detection unit fixedly installed inside the shell, and a test probe fixedly installed at the bottom of the detection unit, the test probe extending out of the bottom of the shell, the bottom of the shell is connected to a protective cover through an elastic structure, and the protective cover surrounds the outer surface of the test probe and completely covers the test probe, a speed measuring device is fixedly installed on one side of the elastic structure, and a blocking device is fixedly installed on the other side of the elastic structure.

[0006] Preferably, the elastic structure includes a connecting plate fixedly sleeved on the top of the protective cover, the elastic structure also includes guide rods movably inserted in the four corners of the connecting plate, and the bottom of the guide rod is fixedly connected to the top surface of the outer shell, the elastic structure also includes a stopper fixedly installed on the top surface of the guide rod, and the elastic structure also includes a spring sleeved on the outer surface of the guide rod, and the two ends of the spring are respectively abutted against the connecting plate.

[0007] Preferably, the speed measuring device is a speed sensor, and the speed sensor is detachably mounted in the middle of one side of the connecting plate.

[0008] Preferably, the blocking device includes a pneumatic rod fixedly mounted on the other side of the housing, and the blocking device also includes a limit block fixedly mounted on the piston end of the pneumatic rod, and the limit block is located at the top of the other side of the connecting plate.

[0009] Preferably, it also includes a microprocessor fixedly mounted at the bottom end of the housing, and the microprocessor is electrically connected to the speed sensor and the pneumatic rod.

[0010] Preferably, the installation height of the pneumatic rod is smaller than the distance between the bottom surface of the protective cover and the bottom surface of the outer shell.

[0011] Preferably, it also includes a display screen and buttons arranged on the front of the housing, the display screen is located above the buttons, and both the display screen and the buttons are electrically connected to the detection unit.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model installs the protective cover around the outer periphery of the test probe by means of an elastic structure, and installs a speed measuring device on the elastic structure. The upward speed is set by the speed measuring device in cooperation with a microprocessor. If the moving speed of the test device driven by the protective cover exceeds the set speed, the microprocessor cooperates with the grid device to intercept the protective cover to prevent the protective cover from continuing to move upward, thereby protecting the test probe from the protective cover, preventing the film thickness meter from falling and causing damage to the test probe, and ensuring the service life of the test probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0016] Figure 3 It is a partial cross-sectional schematic diagram of the utility model.

[0017] The accompanying drawings are marked as follows: 1. housing; 2. detection unit; 3. test probe; 4. display screen; 5. button; 6. protective cover; 7. connecting plate; 8. guide rod; 9. spring; 10. stopper; 11. speed sensor; 12. pneumatic rod; 13. limit block; 14. microprocessor. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the film thickness meter involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0019] The utility model provides a new coating film thickness meter, such as Figure 1-3As shown, it includes a shell 1 and a detection unit 2 fixedly installed inside the shell 1 and a test probe 3 fixedly installed at the bottom of the detection unit 2, the test probe 3 extends out of the bottom of the shell 1, and also includes a display screen 4 and a button 5 arranged in front of the shell 1, the display screen 4 is located above the button 5, and the display screen 4 and the button 5 are electrically connected to the detection unit 2, the bottom of the shell 1 is connected to a protective cover 6 through an elastic structure, and the protective cover 6 surrounds the outer surface of the test probe 3 and completely covers the test probe 3, a speed measuring device is fixedly installed on one side of the elastic structure, and a blocking device is fixedly installed on the other side of the elastic structure, and also includes a microprocessor 14 fixedly installed at the bottom end of the shell 1, and the microprocessor 14 is electrically connected to the speed sensor 11 and the pneumatic rod 12;

[0020] The protective cover 6 is installed around the outer periphery of the test probe 3 by using an elastic structure, and a speed measuring device is installed on the elastic structure. The upward speed is set by the speed measuring device in cooperation with the microprocessor 14. If the moving speed of the test device driven by the protective cover 6 exceeds the setting, the microprocessor 14 cooperates with the grid device to intercept the protective cover 6 to prevent the protective cover 6 from continuing to move upward, thereby realizing the protection of the test probe 3 by the protective cover 6;

[0021] When using the film thickness meter to measure the coating, the test probe 3 is directly aimed at the object to be measured, and then the housing 1 is slowly pressed down to shrink the protective cover 6 into the housing 1. Since the pressing speed is much slower than the fading speed, the blocking device will not be triggered to intercept the protective cover 6, which will not affect the normal use of the film thickness meter.

[0022] When the shell 1 falls to the bottom, the protective cover 6 contacts the bottom first, and under the impact of gravity, the protective cover 6 immediately contracts toward the inside of the shell 1 under the action of the elastic structure. At this time, the elastic structure drives the speed measuring device to move rapidly upward, exceeding the set speed. At this time, under the action of the microprocessor 14, the speed is immediately judged and the blocking device is turned on to intercept the upward moving protective cover 6 to prevent the protective cover 6 from continuing to move upward, thereby triggering the protective cover 6 to protect the test probe 3, preventing the film thickness meter from falling and causing damage to the test probe 3, and ensuring the service life of the test probe 3.

[0023] The elastic structure includes a connecting plate 7 fixedly sleeved on the top of the protective cover 6, the elastic structure also includes a guide rod 8 movably inserted at the four corners of the connecting plate 7, and the bottom of the guide rod 8 is fixedly connected to the top surface of the shell 1, the elastic structure also includes a stopper 10 fixedly installed on the top surface of the guide rod 8, and the elastic structure also includes a spring 9 sleeved on the outer surface of the guide rod 8, and the two ends of the spring 9 are respectively abutted against the connecting plate 7. In the initial state, under the elastic force of the spring 9, the connecting plate 7 moves downward to push the protective cover 6 to cover the test probe 3 to protect the test probe 3. When fading, the protective cover 6 is manually impacted and moves toward the inside of the shell 1. At this time, the connecting plate 7 moves upward to shrink the spring 9.

[0024] The speed measuring device is a speed sensor 11 , which is detachably mounted in the middle of one side of the connecting plate 7 .

[0025] The blocking device includes a pneumatic rod 12 fixedly installed on the other side of the shell 1, and the blocking device also includes a limit block 13 fixedly installed on the piston end of the pneumatic rod 12, and the limit block 13 is located at the top of the other side of the connecting plate 7. When the microprocessor 14 determines that the upward movement speed of the protective cover 6 exceeds the setting, the microprocessor 14 turns on the pneumatic rod 12, and the pneumatic rod 12 immediately drives the limit block 13 to extend, blocking the upward moving connecting plate 7 to prevent the protective cover 6 from continuing to move upward. The installation height of the pneumatic rod 12 is less than the distance between the bottom surface of the protective cover 6 and the bottom surface of the shell 1, ensuring that the movement distance of the bottom of the protective cover 6 when the protective cover 6 is intercepted is still higher than the test probe 3, ensuring that the test probe 3 is fully protected.

[0026] The working principle of the utility model is as follows: when the shell 1 falls to the bottom surface, the protective cover 6 contacts the bottom surface first, and under the impact of gravity, the protective cover 6 immediately contracts toward the inside of the shell 1 under the action of the elastic structure. At this time, the elastic structure drives the speed measuring device to move upward rapidly, exceeding the set speed. At this time, under the action of the microprocessor 14, the speed is immediately judged and the blocking device is turned on to intercept the protective cover 6 moving upward, so as to prevent the protective cover 6 from continuing to move upward, thereby triggering the protective cover 6 to protect the test probe 3, preventing the film thickness instrument from falling and causing damage to the test probe 3, and ensuring the service life of the test probe 3;

[0027] When using the film thickness meter to measure the coating, simply aim the test probe 3 at the object to be measured, and then slowly press down the shell 1 to shrink the protective cover 6 into the inside of the shell 1. Since the pressing speed is much lower than the decay speed, the blocking device will not be triggered to intercept the protective cover 6, and the normal use of the film thickness meter will not be affected.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0029] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A novel coating thickness meter, comprising a housing (1), a detection unit (2) fixedly mounted inside the housing (1), and a test probe (3) fixedly mounted at the bottom of the detection unit (2), wherein the test probe (3) extends out of the bottom of the housing (1), and is characterized in that: The bottom of the shell (1) is connected to a protective cover (6) via an elastic structure, and the protective cover (6) surrounds the outer surface of the test probe (3) and completely covers the test probe (3), a speed measuring device is fixedly installed on one side of the elastic structure, and a blocking device is fixedly installed on the other side of the elastic structure, and also includes a microprocessor (14) fixedly installed at the bottom end of the shell (1), and the microprocessor (14) is electrically connected to the speed sensor (11) and the pneumatic rod (12).

2. A new coating thickness meter according to claim 1, characterized in that: The elastic structure comprises a connecting plate (7) fixedly sleeved on the top of the protective cover (6), the elastic structure also comprises a guide rod (8) movably inserted in the four corners of the connecting plate (7), and the bottom of the guide rod (8) is fixedly connected to the top surface of the shell (1), the elastic structure also comprises a stopper (10) fixedly mounted on the top surface of the guide rod (8), and the elastic structure also comprises a spring (9) sleeved on the outer surface of the guide rod (8), and the two ends of the spring (9) are respectively in contact with the connecting plate (7).

3. A new coating thickness meter according to claim 1, characterized in that: The speed measuring device is a speed sensor (11), and the speed sensor (11) is detachably mounted on the middle part of one side of the connecting plate (7).

4. A novel coating thickness meter according to claim 1, characterized in that: The blocking device comprises a pneumatic rod (12) fixedly mounted on the other side of the housing (1), and the blocking device also comprises a limit block (13) fixedly mounted on the piston end of the pneumatic rod (12), and the limit block (13) is located at the top of the other side of the connecting plate (7).

5. A novel coating thickness meter according to claim 4, characterized in that: The installation height of the pneumatic rod (12) is smaller than the distance between the bottom surface of the protective cover (6) and the bottom surface of the outer shell (1).

6. A novel coating thickness meter according to claim 1, characterized in that: It also includes a display screen (4) and a button (5) arranged in front of the housing (1), the display screen (4) is located above the button (5), and the display screen (4) and the button (5) are both electrically connected to the detection unit (2).

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