Multi-probe clamp

Abstract

The invention provides a multi-probe clamp which comprises the components of a display part which comprises a distance display and is used for displaying the distance between two probes by applying the principle of a digital display vernier caliper; the front probe fixed part and the rear probe movable part are symmetrically arranged, each probe movable part comprises a fixed screw tube, and a plurality of sets of probe clamps are detachably connected by adopting an internal thread structure. According to the invention, the performance is more stable, the reading is not limited, the distance control is more accurate, the overall design structure is simple, different functions can be realized, different magnetic attraction wheels are used, the overall design is easy to operate and maintain, and the whole tool is light in weight and convenient to carry.

Description

Technical Field

[0001] The present invention belongs to the technical field of fixtures, and particularly relates to a multi-probe fixture. Background Art

[0002] The existing probe fixture uses an ordinary ruler as a reference to fix the distance. The size of the probe clamp is fixed, and there are magnetic wheels on both sides. By pushing the magnetic wheels by hand, the entire fixture can be moved. The principle of the multi-probe fixture is the same, with a simple tooling and limited usage conditions.

[0003] The existing probe fixture uses an ordinary ruler as a scale, and the reading will deviate with the change of the angle, resulting in inaccurate reading. Moreover, there is no automatic locking device. As the components age, during use, the distance control is inaccurate, affecting the experimental results. The direction of the scale of this fixture is fixed due to the limitation of the magnetic wheels and cannot meet the requirement of reading at different angles. The entire tooling is heavy, inconvenient to manually control, and cannot meet the replacement of multiple probes and multiple magnetic wheels according to the usage situation. Summary of the Invention

[0004] To solve the technical problems in the prior art, the present invention provides a multi-probe fixture, including:

[0005] A display part, including a distance display, which uses the principle of a digital vernier caliper to display the distance between two probes;

[0006] A front probe fixing part and a rear probe moving part. The two probe moving parts are symmetrically arranged and both include fixed screw tubes, and a plurality of sets of probe fixtures are detachably connected by an internal thread structure.

[0007] Further, the distance display includes a unit conversion key, a power on / off key, a liquid crystal screen, and a zero clearing function key, which cooperate with the display to complete functions such as reading, zero clearing, and unit conversion.

[0008] Further, the display part is also provided with a self-locking device for fixing the distance, thereby fixing the position of the probe and preventing it from sliding.

[0009] Further, the display part and the probe moving part are connected by a universal ball to achieve the function that the display part does not affect the reading while changing the angle.

[0010] Further, the probe fixture includes a single-probe fixture and a double-probe fixture. For an ordinary UT experiment, a single-wheel single-probe can be selected; if multi-probe collaborative operation is required, a multi-probe double-wheel fixture can be selected.

[0011] Furthermore, the single probe clamp comprises an n-shaped probe clamp body, the upper end of which is connected to the fixing screw; probe fixing knobs are symmetrically provided on both sides of the probe clamp body, and the probe fixing knobs fix the probe via a screw structure.

[0012] Furthermore, the upper end of the probe clamp body is located on both sides of the fixed screw and is penetrated by push screws. The position corresponding to the end of the push screw in the probe clamp body is connected to a pressure plate through a spring. The push screw can resist the pressure plate when it is screwed into the probe clamp body.

[0013] Furthermore, the internal structure of the double-probe clamp is the same as that of the single-probe clamp, except that the two double-probe clamps each clamp two probes for a total of four probes, and the four probes are arranged from left to right as the first probe, the second probe, the third probe, and the fourth probe, wherein the third probe and the fourth probe can move on the ruler; a laser ranging device is placed on the third probe, and a baffle is provided in front of the corresponding fourth probe. Through the principle of linear propagation of light, the laser rangefinder can display the distance between the third probe and the fourth probe. If the laser rangefinder cannot read the value due to a malfunction, the ruler can also assist in reading the value through algebraic operations; the first probe and the second probe can pull two handles to adjust the distance, and the distance can be read using the distance display.

[0014] Furthermore, the fixed part of the probe also includes a handle and a magnetic wheel. The handle and the magnetic wheel are of an integrated design, wherein the handle is wrapped with rubber, and the function of the magnetic wheel is to adsorb the entire fixed part onto the weld to be inspected.

[0015] Furthermore, the magnetic wheel includes a single magnetic wheel or a double magnetic wheel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The performance of the present invention is more stable, the reading is not restricted, and the control of the distance is more precise. The overall design structure is simple, and different functions can be provided. Different magnetic wheels are used. The overall design is easy to operate and maintain, and the entire tooling is light in weight and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the display part of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the front probe fixing part of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the movable part of the rear probe of the present invention;

[0021] Figure 4It is a schematic structural diagram of the magnetic adsorption wheel of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the probe clamp of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the double probe clamp of the present invention;

[0024] Figure 7 It is a schematic internal structural diagram of the probe clamp of the present invention. Detailed implementation manners

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0026] This application proposes that this double probe fixture is divided into three parts in total: a display part, a front probe fixing part, and a rear probe moving part:

[0027] The display part (see Figure 1 ) includes a distance display and a self-locking device. The display includes a unit conversion key, a power on / off key, a liquid crystal screen, and a zero clearing function key. Using the principle of a digital display vernier caliper, it displays the distance between the two probes. This display part has function keys with respective functions, which cooperate to complete functions such as reading, zero clearing, and unit conversion. A button battery is installed in the battery cover to supply power to the display circuit. The self-locking device is used to fix the distance, thereby fixing the position of the probe so that it does not slide, making the distance control more accurate.

[0028] The front probe fixing part (see Figure 2 ) and the rear probe moving part (see Figure 3 ) have symmetrical structures and both include a universal ball, a fixed screw tube, a handle, a probe clamp (see Figure 5 ), a probe fixing knob, a single magnetic adsorption wheel or a double magnetic adsorption wheel (see Figure 4 ). The function of the universal ball is to enable the display part to change the angle without affecting the reading function, making it simple and convenient for the operator to read. The fixed screw tube adopts an internal thread structure, and its function is to fix the single probe fixture, double probe fixture, replaceable handle, and magnetic adsorption wheel that can be selected according to the function change. For example, when using the TOFT function, a single probe fixture and the method of using two wheels in the front and rear can be adopted for operation. If it is an ordinary UT experiment, a single wheel and single probe can be selected. If multi-probe collaborative operation is required, we can select a multi-probe double-wheel fixture to meet personalized needs. The handle and the magnetic adsorption wheel are integrally designed and cannot be separated, which is convenient for actual operation. Among them, the handle is wrapped with rubber and does not hurt the hand. The function of the magnetic adsorption wheel is to adsorb the entire fixing part on the weld to be inspected. The probe clamp and the probe fixing knob (see Figure 5) Through synergy, the probe is firmly fixed in the fixture. The probe fixing knob can adjust the height through the groove. The gasket made of silica gel material is used for the internal contact surface with the probe, which can increase the friction while not damaging the outer shell of the probe and extend its service life.

[0029] Single probe clamp (see Figure 5 ), which is composed of a probe clamp, a push screw, a spring, a pressure plate, and a probe fixing knob. Its working state is as follows: Place the probe in the probe clamp, and initially fix the probe in the clamp through the left and right probe fixing brackets. Then adjust the push screw to apply force to the spring. In order to make the probe receive force evenly, two left and right push screws are designed. Because there are open grooves left on the outer wall, the probe is squeezed to the bottom after initial fixation. Utilize the elasticity of the spring to overcome the influence of uneven measurement surfaces and ensure that the probe closely adheres to the measurement surface.

[0030] Double probe clamp (see Figure 6 ), the internal structure of the probe clamp (see Figure 7 ) is the same as that of the single probe fixture. The difference is that the double probe clamp can hold a total of 4 probe clamps. The 4 probe clamps are arranged left and right as shown in the figure. Probe 5 and probe 6 can move on the scale. A laser ranging device is placed on probe 5, and there is a baffle in front of probe 6 corresponding to it. Through the principle of linear propagation of light, the laser rangefinder can display the distance between probe 5 and probe 6. If the laser rangefinder cannot read the value due to a malfunction, the scale can also be used for auxiliary reading through algebraic operations. Probe 3 and probe 4 can pull two handgrips to adjust the distance, and the distance can be read out with the distance display.

[0031] If the operator needs to use this fixture to detect the weld seam, select the required probe clamp and magnetic wheel, install them with the fixed screw tube, click the ON / OFF button, push the movable part of the rear probe forward until it reaches the left end of the scale, press the ZERO key to zero, install the probe, adjust the position through probe fixing knobs 1 and 2, then pull the handgrip of the movable part of the rear probe backward, observe the display screen, pull it to the required size, rotate the self-locking device to fix the distance. If multi-probe collaborative operation is selected, the distance between the other two probes also needs to be adjusted according to the scale. After all the probes are fixed, finally place this fixture on the surface to be inspected, connect the wires and turn on the machine, hold handgrip 1 and handgrip 2 with both hands, and push forward at a specified rate to obtain the experimental results.

[0032] In summary, the above is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. All equivalent changes and modifications made according to the scope of the present invention patent and the content of the specification are within the scope covered by the present invention patent.

Claims

1. A multi-probe fixture, characterized in that: include: The display part includes a distance display, which uses the principle of a digital display vernier caliper to display the distance between the two probes; The front probe fixed part and the rear probe movable part are symmetrically arranged, both of which include fixed screw tubes and adopt an internal thread structure to detachably connect multiple sets of probe fixtures.

2. The clamp according to claim 1, characterized in that: The distance display comprises a unit conversion key, an on / off key, a liquid crystal screen, and a reset function key, and cooperates with the display to complete the functions of reading, reset, and unit conversion.

3. The clamp according to claim 1, characterized in that: The display part is also provided with a self-locking device for fixing the distance, thereby fixing the position of the probe and preventing it from sliding.

4. The clamp according to claim 1, characterized in that: The display part and the movable part of the probe are connected through a universal ball, so that the display part can change its angle without affecting the reading.

5. The clamp according to claim 1, characterized in that: The probe fixture includes single-probe fixture and double-probe fixture. If it is a common UT experiment, choose a single-probe fixture; if multiple probes need to work together, choose a multi-probe double-wheel fixture.

6. The clamp according to claim 5, characterized in that: The single probe clamp comprises an n-shaped probe clamp body, the upper end of which is connected to the fixing screw; probe fixing knobs are symmetrically arranged on both sides of the probe clamp body, and the probe fixing knobs fix the probe through a screw structure.

7. The clamp according to claim 6, characterized in that: The upper end of the probe clamp body is located on both sides of the fixed screw and is penetrated by push screws. The position corresponding to the end of the push screw in the probe clamp body is connected to a pressure plate through a spring. The push screw can resist the pressure plate when it is screwed into the probe clamp body.

8. The clamp according to claim 7, characterized in that: The internal structure of the double-probe clamp is the same as that of the single-probe clamp, except that two double-probe clamps each clamp two probes for a total of four probes, and the four probes are arranged from left to right as the first probe, the second probe, the third probe, and the fourth probe, wherein the third probe and the fourth probe can move on the ruler; a laser distance measuring device is placed on the third probe, and a baffle is provided in front of the corresponding fourth probe, and the laser distance meter can display the distance between the third probe and the fourth probe through the principle of linear propagation of light, and if the laser distance meter cannot read the value due to a malfunction, the ruler can also assist in reading the value through algebraic operations; the first probe and the second probe can pull two handles to adjust the distance, and the distance can be read out using the distance display.

9. The clamp according to claim 1, characterized in that: The fixed part of the probe also includes a handle and a magnetic wheel. The handle and the magnetic wheel adopt an integrated design, in which the handle is wrapped with rubber, and the function of the magnetic wheel is to adsorb the entire fixed part on the weld to be inspected.

10. The clamp according to claim 9, characterized in that: The magnetic wheel includes a single magnetic wheel or a double magnetic wheel.

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