A pulse electromagnetic ultrasonic thickness gauge

Abstract

The invention relates to the technical field of thickness gauges, and discloses a pulse electromagnetic electromagnetic ultrasonic thickness gauge, comprising a mainframe, a probe electrically connected to the bottom of the mainframe, the probe comprising a protective shell, an electromagnet, a magnetostrictive torsion waveguide sensor, and a spiral coil arranged inside the protective shell, and the electromagnet is used to generate an alternating magnetic field; the invention replaces the permanent magnet inside the probe with an electromagnet, so that during thickness measurement, the electromagnet can provide the same function as the permanent magnet, so that the probe has a basic static magnetic field to meet the needs of ultrasonic excitation, and after the thickness measurement is completed, the probe can lose its magnetic adsorption effect by powering off, and compared with a traditional structure probe, it does not need to apply a large force when separating from a measured object, so that the thickness gauge is more convenient to use, and in addition, a magnetostrictive torsion waveguide sensor is added to the probe, and the magnetostrictive effect is utilized to enable the thickness gauge to achieve non-contact, high-precision measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of thickness gauges, and more specifically to a pulse electromagnetic electromagnetic ultrasonic thickness gauge. Background Art

[0002] The pulse electromagnetic electromagnetic ultrasonic thickness gauge is an instrument that uses electromagnetic ultrasonic technology to measure the thickness of materials. It measures the thickness of materials by sending pulse electromagnetic signals to the material being measured, and using the eddy currents and ultrasonic reflection principles generated inside the material. The electromagnetic pulse generator in the instrument generates high-frequency electromagnetic pulses, which are sent to the surface of the material being measured through the probe. On the surface of the material being measured, the high-frequency electromagnetic pulses will excite eddy currents, which propagate inside the material being measured and generate ultrasonic waves. The ultrasonic waves propagate inside the material being measured and are reflected at another interface of the material (such as the bottom surface or defects). The reflected ultrasonic signal is received by the probe and transmitted to the signal processing system. The signal processing system filters, amplifies, digitizes, and processes the received signals, and finally calculates the thickness of the material.

[0003] Existing pulsed electromagnetic ultrasonic thickness gauges still have defects when in use. For example, the instrument probe has magnetic force and has an adsorption effect on the object being measured. When the probe is detached from the object being measured after the test, manual force is required to separate the probe from the object being measured, which is inconvenient. In addition, in special testing environments, the angle and distance between the probe and the object being measured need to be adjusted. Manual adjustment lacks stability and accuracy, which can easily cause measurement errors (when the surface of the object being measured is curved, concave, convex or other irregular shapes, the probe angle needs to be adjusted to ensure that the probe and the object remain vertical; when the surface of the object being measured is covered with a thicker coating, paint, varnish or other material, the distance between the probe and the object being measured is adjusted, and the ultrasonic wave will have more spatial attenuation during propagation, but it may also obtain stronger penetration energy, which is convenient for penetrating the covering on the material). Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pulse electromagnetic electromagnetic ultrasonic thickness gauge to solve the above-mentioned background technology. The probe of the traditional pulse electromagnetic ultrasonic thickness gauge is affected by the magnetic force, and it is difficult to separate it from the object to be measured; adjusting the angle and distance between the probe and the object to be measured under special measurement conditions is likely to cause measurement errors.

[0005] The present invention provides the following technical solution: a pulse electromagnetic electromagnetic ultrasonic thickness gauge, comprising a mainframe, a probe electrically connected to the bottom of the mainframe, the probe comprising a protective shell, an electromagnet, a magnetostrictive torsion waveguide sensor, and a spiral coil are arranged inside the protective shell, the electromagnet is used to generate an alternating magnetic field, and the magnetostrictive torsion waveguide sensor is used to receive the torsion waveguide reflected by the object to be measured;

[0006] A height and angle adjustment disc frame A is assembled at the bottom of the probe, and the height and angle adjustment disc frame A includes a main body frame. A front leg and a rear leg are arranged on the front of the main body frame, and a back leg and a rear leg are arranged on the back. Two driving mechanisms and four combining mechanisms are arranged inside the main body frame. The four combining mechanisms are respectively connected to the front leg, the rear leg, the front leg and the rear leg through four belt transmission mechanisms. A valve type transmission mechanism is installed on the top of the main body frame. The two driving mechanisms are connected through the valve type transmission mechanism. The two driving mechanisms are assembled with the four combining mechanisms. The two driving mechanisms, the four combining mechanisms and the valve type transmission mechanism are used to control the front leg, the rear leg, the rear leg and the rear leg to operate individually and in combination.

[0007] Furthermore, a groove is provided on the top of the main body frame and extends through the bottom. The shape and size of the groove are adapted to the probe. A placement space one is provided inside the groove on both sides. A placement space two is provided inside the main body frame on the front and back sides of the groove. The two driving mechanisms and the four combined mechanisms are respectively arranged in the two placement spaces one, and the four belt transmission mechanisms are respectively arranged in the two placement spaces two. When the height and angle adjustment frame A is assembled at the bottom of the probe.

[0008] Furthermore, the front tripod, the rear tripod, the rear tripod and the flip ends of the rear tripod are all provided with casters.

[0009] Furthermore, the driving mechanism includes a rotary cylinder and a rotary rod. Two polygonal combination columns are slidably sleeved inside the rotary cylinder. The outer ends of the two polygonal combination columns extend to the front and rear ends of the rotary cylinder and are longitudinally aligned with the input ends of the two combination mechanisms. The side walls of the two polygonal combination columns are provided with annular sliding grooves, and the two annular sliding grooves are movably sleeved with levers. The side wall of the rotary cylinder is movably sleeved with a connecting frame, and the connecting frame is fixedly connected to the inner wall of the main body disk frame. The rotary rod passes through the top of the main body disk frame to the inside, and the rotary rod is docked with the valve type transmission mechanism. The bottom end of the rotary rod is fixedly connected to an active bevel gear, and a passive bevel gear is meshed with a side wall of the active bevel gear, and the passive bevel gear is fixedly connected to the side wall of the rotary cylinder.

[0010] Furthermore, the combination mechanism includes a fixed shell, a worm is movably sleeved on the inner wall of the fixed shell, a worm wheel is meshed on the side wall of the worm, the inner wall of the worm wheel is connected to the belt transmission mechanism through a connecting shaft, a passive bevel gear 2 is fixedly connected to the side wall of the worm, an active bevel gear 2 is meshed on the side wall of the passive bevel gear 2, a rotary hole penetrating to the interior is opened on the back of the fixed shell, a reversing column is movably sleeved in the rotary hole, the reversing column is fixedly connected to the inner wall of the active bevel gear 2, and an end column for combining with a polygonal combination column is provided on the back of the reversing column.

[0011] Furthermore, the end column is in the shape of a polygon, and one end of the polygonal composite column is provided with a slot that matches the shape and size of the end column.

[0012] Furthermore, the valve type transmission mechanism includes two pulley 1s, two double-groove pulleys, two pulley 2s, and a bracket body. The two pulley 1s are respectively fixedly connected to the side walls of the rotating rods of the two driving mechanisms, and the two double-groove pulleys and pulley 2 are movably sleeved on the top of the main disc frame. The pulley 1 is connected to the double-groove pulley through a transmission belt 1, and the double-groove pulley is connected to the pulley 2 through a transmission belt 2. A connector is installed on the top of the bracket body, and two through holes are opened on the top of the bracket body to penetrate into the interior, and the output end of the connector passes through the two through holes and is combined and connected with the two pulley 2s.

[0013] Furthermore, the connector includes an outer solid shell, an inner moving shell is slidably sleeved inside the outer solid shell, two intermeshing linkage gears are movably sleeved on the inner wall of the inner moving shell, the bottom centers of the two linkage gears are fixedly connected with polygonal bottom columns, the two polygonal bottom columns penetrate to the bottom of the inner moving shell, the tops of the two pulleys are provided with connecting grooves that are adapted to the shape and size of the connector, the top of the outer solid shell is provided with a threaded hole that penetrates to the interior, a screw is threadedly sleeved in the threaded hole, and the bottom end of the screw is movably connected to the top of the inner moving shell.

[0014] Furthermore, the front and back sides of the main body rack are both provided with inner grooves, and the front footrest, the rear footrest, the rear footrest and the rear footrest are respectively arranged in the two inner grooves.

[0015] Furthermore, two limiting grooves are provided on both sides of the main body rack, and the ends of the two shifting rods away from the polygonal combination column pass through the two limiting grooves respectively.

[0016] Technical effects and advantages of the present invention:

[0017] The present invention replaces the permanent magnet inside the probe with an electromagnet. When measuring thickness, the electromagnet can provide the same function as the permanent magnet, so that the probe has a basic static magnetic field to meet the needs of ultrasonic excitation. After the thickness measurement is completed, the probe can lose its magnetic adsorption effect by turning off the power. Compared with the traditional structure probe, it does not need to apply a large force when separating from the measured object, making the thickness measuring instrument more convenient to use.

[0018] In addition, a magnetostrictive torsional waveguide sensor is added to the probe. By using the magnetostrictive effect, the thickness gauge can achieve non-contact, high-precision measurement and improve the long-distance detection capability. It is especially suitable for complex structures and harsh environments, such as high temperature and high pressure occasions. At the same time, the sensor has stable output and strong anti-interference ability, ensuring the accuracy of the measurement results.

[0019] The assembled height and angle adjustment disc frame A is also provided to provide stable support and fixation when the instrument probe needs to be adjusted in angle and distance when measuring objects with curved or coated surfaces, so as to improve the stability of the thickness gauge in special measurement environments;

[0020] When the height and angle adjustment disc frame A is in use, under the coordinated action of the two driving mechanisms and the valve-type transmission mechanism, the front tripod, the back front tripod, the front rear tripod and the back rear tripod can be accurately controlled to flip individually or synchronously, so as to achieve accurate and convenient height and angle adjustment effects. Through this structural coordination relationship, the height and angle adjustment disc frame A is easy to operate and has a higher adjustment accuracy, which is convenient for assisting the instrument probe to achieve a more accurate distance and angle, and improves the measurement accuracy of the instrument in special measurement environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of the probe structure module;

[0023] Figure 3 For the present invention Figure 1 Explosion diagram of the height and angle adjustment rack A structure;

[0024] Figure 4 For the present invention Figure 1 The top view of the height adjustment and angle adjustment plate rack A;

[0025] Figure 5 For the present invention Figure 3 A top view of a cross section of the main disc frame in FIG.

[0026] Figure 6 For the present invention Figure 3 Schematic diagram of the driving mechanism structure in FIG.

[0027] Figure 7 For the present invention Figure 3 Schematic diagram of the combined mechanism structure in ;

[0028] Figure 8 For the present invention Figure 3 Schematic diagram of the valve transmission mechanism structure;

[0029] Fig. 9 For the present invention Figure 1 A front view of the height adjustment and angle adjustment rack A;

[0030] Fig.10 For the present invention Figure 1 Side view of the height and angle adjustment plate rack A.

[0031] The accompanying drawings are marked as follows: 1. main unit; 2. probe; 21. protective shell; 22. electromagnet; 23. magnetostrictive torsional waveguide sensor; 24. spiral coil; 3. main body rack; 4a. front tripod; 4b. back tripod; 5a. back tripod; 5b. back tripod; 6. driving mechanism; 7. combination mechanism; 8. belt transmission mechanism; 9. valve transmission mechanism; 31. embedded groove; 32. placement space one; 33. placement space two; 34. inner groove; 35. limit groove; 61. rotary cylinder; 62. polygonal combination column; 63. lever ; 64, passive bevel gear one; 65, active bevel gear one; 66, rotating rod; 67, connecting frame one; 68, connecting frame two; 71, fixed shell; 72, worm wheel; 73, worm; 74, passive bevel gear two; 75, active bevel gear two; 76, reversing column; 77, end column; 78, connecting shaft; 91, pulley one; 92, double-groove pulley; 93, pulley two; 94, bracket body; 95, connector; 951, outer solid shell; 952, inner moving shell; 953, linkage gear; 954, polygonal bottom column; 955, screw. DETAILED DESCRIPTION

[0032] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 1-Figure 3 The present invention provides a pulse electromagnetic electromagnetic ultrasonic thickness gauge, comprising a main unit 1, the bottom of which is electrically connected to a probe 2, characterized in that: the probe 2 comprises a protective shell 21, the protective shell 21 is provided with an electromagnet 22, a magnetostrictive torsion waveguide sensor 23, and a spiral coil 24, the electromagnet 22 is used to generate an alternating magnetic field, and the magnetostrictive torsion waveguide sensor 23 is used to receive the torsion waveguide reflected by the object to be measured;

[0034] A height and angle adjustment frame A is assembled at the bottom of the probe 2, and the height and angle adjustment frame A includes a main frame 3. A front leg 4a and a rear leg 5a are arranged on the front of the main frame 3, and a back front leg 4b and a back leg 5b are arranged on the back. Two driving mechanisms 6 and four combination mechanisms 7 are arranged inside the main frame 3. The four combination mechanisms 7 are respectively connected to the front leg 4a, the back front leg 4b, the front rear leg 5a and the back leg 5b through four belt transmission mechanisms 8. A valve transmission mechanism 9 is installed on the top of the main frame 3. The two driving mechanisms 6 are connected through the valve transmission mechanism 9. The two driving mechanisms 6 are assembled with the four combination mechanisms 7. The two driving mechanisms 6, the four combination mechanisms 7 and the valve transmission mechanism 9 are used to control the front leg 4a, the back front leg 4b, the rear leg 5a and the back leg 5b to operate separately and in combination.

[0035] Reference Figure 4 , 5A groove 31 is provided on the top of the main body frame 3 and extends to the bottom. The shape and size of the groove 31 are adapted to the probe 2. A placement space 1 32 is provided inside the groove 31 on both sides thereof. A placement space 2 33 is provided inside the main body frame 3 on the front and back sides of the groove 31. Two driving mechanisms 6 and four combination mechanisms 7 are respectively arranged in the two placement spaces 1 32. Four belt transmission mechanisms 8 are respectively arranged in the two placement spaces 2 33. When the height adjustment and angle adjustment frame A is assembled at the bottom of the probe 2, in order to avoid obstruction of the probe 2 and affect the measurement accuracy, the groove 31 is provided and the probe 2 is embedded in the groove 31, so as to avoid obstruction caused by the height adjustment and angle adjustment frame A. By providing the placement space 1 32 and the placement space 2 33, the installation positions of the driving mechanism 6, the combination mechanism 7, the belt transmission mechanism 8 and other components can be reasonably planned to avoid being affected by the groove 31.

[0036] Reference Figure 3 , 9 The front tripod 4a, the back tripod 4b, the rear tripod 5a, and the flip ends of the back tripod 5b are all provided with casters. When multiple points need to be measured on the object to be measured, since the magnetostrictive torsion waveguide sensor 23 of the probe 2 is in operation, there is an adsorption effect between the probe 2 and the iron material of the object to be measured, and it is relatively laborious to directly translate the instrument due to resistance. However, removing the magnetic adsorption effect by powering off the magnetostrictive torsion waveguide sensor 23 of the probe 2 makes the operation process too complicated. Therefore, by setting casters to keep the magnetostrictive torsion waveguide sensor 23 powered off, the translation instrument can still achieve the labor-saving effect and realize multi-point measurement.

[0037] Reference Figure 6The driving mechanism 6 includes a rotary cylinder 61 and a rotary rod 66. Two polygonal combination columns 62 are slidably sleeved inside the rotary cylinder 61. The outer ends of the two polygonal combination columns 62 extend to the front and rear ends of the rotary cylinder 61 and are longitudinally aligned with the input ends of the two combination mechanisms 7. The side walls of the two polygonal combination columns 62 are provided with annular slide grooves, and the two annular slide grooves are movably sleeved with levers 63. The side wall of the rotary cylinder 61 is movably sleeved with a connecting frame 67, and the connecting frame 67 is fixedly connected to the inner wall of the main body frame 3. The rotary rod 66 passes through the top of the main body frame 3 to the inside, and the rotary rod 66 is connected to the valve type transmission mechanism 9. The bottom end of the rotary rod 66 is fixedly connected with an active bevel gear 65. The active bevel gear 65 A passive bevel gear 64 is meshed with the side wall, and the passive bevel gear 64 is fixedly connected to the side wall of the rotary cylinder 61. A connecting frame 2 68 is movably sleeved on the side wall of the rotary rod 66, and the connecting frame 2 68 is fixedly connected to the inner wall of the main disc frame 3. The active bevel gear 65 is driven to rotate by rotating the rotary rod 66. The passive bevel gear 64 can drive the rotary cylinder 61 to rotate through the meshing relationship between the passive bevel gear 64 and the active bevel gear 65. The shape characteristics of the polygonal combination column 62 can make the rotary cylinder 61 drive the polygonal combination column 62 to rotate. The polygonal combination column 62 can be translated by toggling the toggle rod 63 to be combined with the combination mechanism 7, thereby driving the combination mechanism 7 to operate.

[0038] Reference Figure 7The combined mechanism 7 includes a fixed shell 71, a worm 73 is movably sleeved on the inner wall of the fixed shell 71, a worm wheel 72 is meshed on the side wall of the worm 73, the inner wall of the worm wheel 72 is connected to the belt transmission mechanism 8 through a connecting shaft 78, a passive bevel gear 2 74 is fixedly connected to the side wall of the worm 73, and an active bevel gear 2 75 is meshed on the side wall of the passive bevel gear 2 74, a rotating hole that penetrates the interior is opened on the back of the fixed shell 71, and a reversing column 76 is movably sleeved in the rotating hole, and the reversing column 76 is fixedly connected to the inner wall of the active bevel gear 2 75, and an end column 77 for combining with the polygonal combined column 62 is provided on the back of the reversing column 76. When the polygonal combined column 62 is combined with the end column 77, the end column 77 is driven to rotate by the driving mechanism 6, and the reversing column 76 is driven to rotate by the end column 77, so that the combined mechanism 7 drives the active bevel gear 2 75 rotates, and according to the meshing relationship between the active bevel gear 2 75 and the passive bevel gear 2 74, the passive bevel gear 2 74 drives the worm 73 to rotate, and through the meshing relationship between the worm wheel 72 and the worm 73, the worm wheel 72 can drive the connecting shaft 78 to rotate, thereby causing the connecting shaft 78 to drive the belt transmission mechanism 8 to operate. When the front leg 4a, the back front leg 4b, the front rear leg 5a, and the back leg 5b are turned over to form a support, a passive turning effect is likely to occur under the influence of external force. To avoid this situation, the worm wheel 72 is arranged to cooperate with the worm 73, and according to their characteristics, a one-way locking effect can be achieved, thereby enabling the combined mechanism 7 to prevent the front leg 4a, the back front leg 4b, the front rear leg 5a, and the back leg 5b from turning over due to external force while connecting the driving mechanism 6 to transmit the rotational force.

[0039] Reference Figure 6 , 7 The end column 77 is in the shape of a polygon, and a slot matching the shape and size of the end column 77 is opened at one end of the polygonal combination column 62. When the rear end column 77 of the polygonal combination column 62 is inserted into the slot of the polygonal combination column 62, the assembly effect is achieved. According to the shape characteristics of the end column 77 and the slot of the polygonal combination column 62, the polygonal combination column 62 can drive the end column 77 to rotate.

[0040] Reference Figure 8The valve type transmission mechanism 9 includes two pulleys 1 91, two double-groove pulleys 92, two pulleys 2 93, and a bracket body 94. The two pulleys 1 91 are fixedly connected to the side walls of the rotating rods 66 of the two driving mechanisms 6, respectively. The two double-groove pulleys 92 and the pulley 2 93 are movably sleeved on the top of the main disc frame 3. The pulley 1 91 is connected to the double-groove pulley 92 through a transmission belt 1, and the double-groove pulley 92 is connected to the pulley 2 93 through a transmission belt 2. A connector 95 is installed on the top of the bracket body 94. Two through holes are opened on the top of the bracket body 94 to penetrate the inside. The output end of the connector 95 passes through the two through holes and is combined with the two pulleys 2 93 When the control connector 95 connects the pulley two 93, the two pulleys 2 93 can rotate synchronously. When the rotary rod 66 of a driving mechanism 6 is rotated, a pulley 1 91 can be rotated. Under the action of the transmission belt 1 and the transmission belt 2, a pulley 1 91 can drive a double-groove pulley 92 to rotate, and a double-groove pulley 92 can drive a pulley 2 93 to rotate. Under the connection effect of the connector 95, the other pulleys 1 91, the double-groove pulley 92, and the pulley 2 93 reversely transmit the rotational force, so that the other driving mechanism 6 operates synchronously, thereby converting the valve type transmission mechanism 9 from an open state to a closed state.

[0041] Reference Figure 8 The connector 95 includes an outer solid shell 951, an inner moving shell 952 is slidably sleeved inside the outer solid shell 951, and two mutually meshing linkage gears 953 are movably sleeved on the inner wall of the inner moving shell 952. The bottom centers of the two linkage gears 953 are fixedly connected with polygonal bottom columns 954, and the two polygonal bottom columns 954 penetrate to the bottom of the inner moving shell 952. The tops of the two pulleys 93 are provided with connection grooves that match the shape and size of the connector 95. The top of the outer solid shell 951 is provided with a threaded hole that penetrates to the inside, and its thread A screw rod 955 is connected to the threaded sleeve in the hole, and the bottom end of the screw rod 955 is movably connected to the top of the inner movable shell 952. By rotating the screw rod 955, the threaded structure causes the vertical displacement of the inner movable shell 952, thereby driving the vertical displacement of the inner movable shell 952. Through the meshing relationship of the two linkage gears 953, the two polygonal bottom columns 954 can rotate synchronously. When the two polygonal bottom columns 954 are driven by the inner movable shell 952 to move downward to dock with the connecting grooves of the two pulleys 93, the connector 95 can transmit the power to the two pulleys 93.

[0042] Reference Fig. 9The front and back sides of the main body frame 3 are both provided with inner grooves 34, and the front leg 4a, the back leg 4b, the front leg 5a, and the back leg 5b are respectively arranged in the two inner grooves 34. Through this structural arrangement, the legs can be prevented from bulging outward on the front and back sides of the main body frame 3, thereby improving the overall aesthetics. At the same time, when the top of the leg is in contact with the top of the inner groove 34, the upward flipping of the leg can be restricted, which makes it easy to adjust the front leg 4a, the back leg 4b, the front leg 5a, and the back leg 5b to the same flipping height, thereby achieving the flipping angle adjustment effect.

[0043] Reference Figure 3 , 10 Two limit grooves 35 are provided on both sides of the main disc rack 3, and the ends of the two levers 63 away from the polygonal combination column 62 pass through the two limit grooves 35 respectively. This arrangement facilitates the control of the drive mechanism 6 and the combination mechanism 7 outside the main disc rack 3 to combine, making the operation more convenient, and at the same time limits the translation distance of the lever 63 to prevent the polygonal combination column 62 from detaching from the inside of the rotary cylinder 61.

[0044] The working principle of the present invention is as follows: the electromagnet 22 in the probe 2 generates an alternating magnetic field when energized, and the magnetic field induces eddy currents on the surface and inside of the material to be measured. The eddy currents interact with the alternating magnetic field, and then excite the magnetostrictive effect inside the material, causing the magnetic particles in the material to vibrate and generate torsional guided waves. These guided waves propagate along the material and are reflected when encountering the material interface. The reflected guided waves are received by the magnetostrictive torsional guided wave sensor 23 and converted into electrical signals. The thickness of the material can be calculated by analyzing and processing these electrical signals by the host 1. The magnetostrictive torsional guided waves can accurately capture these weak reflected guided waves through the high sensitivity and selective reception of reflected waves of the magnetostrictive torsional guided waves sensor 23, thereby realizing non-contact and high-precision measurement of the thickness measuring instrument. Through the characteristics of the electromagnet 22, after the instrument detection is completed, the electromagnet 22 can be turned off to prevent the probe 2 from having a magnetic adsorption force, thereby avoiding the situation where a strong magnetic adsorption is generated between the probe part of the instrument and the object to be measured and it is difficult to separate.

[0045] In special measurement environments, such as when the surface of the object being measured is curved or covered with a coating, it is necessary to adjust the angle of the instrument to make it perpendicular to the surface of the object being measured, and adjust the distance between the instrument and the object being measured so that the ultrasonic wave can penetrate the coating more effectively. By installing an angle-adjustable and distance-adjustable disc frame A on the probe 2, the instrument can be adjusted in angle and distance to achieve a fixing and supporting effect, thereby avoiding measurement errors caused by poor stability of the instrument.

[0046] When the angle and pitch adjustment rack A is used, the two driving mechanisms 6 can be linked to each other when the valve type transmission mechanism 9 is in the closed state, so that synchronous operation can be performed. When the two driving mechanisms 6 and the four combination mechanisms 7 are in the full assembly effect, the four combination mechanisms 7 can be synchronously operated by controlling one driving mechanism 6 to operate. Under the transmission effect of the four belt transmission mechanisms 8, the front leg frame 4a, the back leg frame 4b, the front leg frame 5a, and the back leg frame 5b can be synchronously turned over and supported downward, so as to achieve the height adjustment effect. When the valve type transmission mechanism 9 is in the open state, Then the two driving mechanisms 6 lose their linkage relationship. At this time, the front leg 4a and the rear leg 4b can be controlled to flip over in combination by controlling the operation of a single driving mechanism 6, or the front leg 5a and the rear leg 5b can be controlled to flip over in combination, so as to achieve the left and right angle adjustment effect; and when the valve transmission mechanism 9 is in a closed state, the control driving mechanism 6 is disconnected from a combination mechanism 7, then the front leg 4a and the rear leg 5a can be controlled to flip over in combination, or the front leg 4b and the rear leg 5b can be controlled to flip over in combination, thereby achieving the front and rear adjustment effect, thereby achieving the convenient height adjustment and angle adjustment effect.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pulse electromagnetic ultrasonic thickness gauge, comprising a main unit (1), wherein the bottom of the main unit (1) is electrically connected to a probe (2), characterized in that: The probe (2) comprises a protective shell (21), wherein an electromagnet (22), a magnetostrictive torsion waveguide sensor (23), and a spiral coil (24) are arranged inside the protective shell (21), wherein the electromagnet (22) is used to generate an alternating magnetic field, and the magnetostrictive torsion waveguide sensor (23) is used to receive torsion waveguides reflected by a measured object; The bottom of the probe (2) is assembled with a height adjustment and angle adjustment frame A, the height adjustment and angle adjustment frame A comprises a main frame (3), the front of the main frame (3) is provided with a front foot frame (4a) and a rear foot frame (5a), and the back of the main frame (3) is provided with a front foot frame (4b) and a rear foot frame (5b), and the inside of the main frame (3) is provided with two driving mechanisms (6) and four combination mechanisms (7), and the four combination mechanisms (7) are respectively connected to the front foot frame (4a), the rear foot frame (4b), the front foot frame (4b), the rear foot frame (5b) through four belt transmission mechanisms (8). The front leg frame (5a) and the rear leg frame (5b) are connected by transmission, a valve-type transmission mechanism (9) is installed on the top of the main body frame (3), the two driving mechanisms (6) are connected by transmission through the valve-type transmission mechanism (9), the two driving mechanisms (6) are connected by assembly with four combination mechanisms (7), and the two driving mechanisms (6), the four combination mechanisms (7) and the valve-type transmission mechanism (9) are used to control the front leg frame (4a), the rear leg frame (4b), the rear leg frame (5a) and the rear leg frame (5b) to operate individually or in combination.

2. A pulse electromagnetic ultrasonic thickness gauge according to claim 1, characterized in that: The main body frame (3) is provided with a groove (31) extending from the top to the bottom, the groove (31) being adapted in shape and size to the probe (2), a first placement space (32) being provided inside the groove (31) on both sides thereof, a second placement space (33) being provided inside the main body frame (3) on the front and back sides of the groove (31), the two driving mechanisms (6) and the four combining mechanisms (7) being respectively arranged inside the two first placement spaces (32), and the four belt transmission mechanisms (8) being respectively arranged inside the two second placement spaces (33), when the height adjustment and angle adjustment frame A is assembled at the bottom of the probe (2).

3. The pulse electromagnetic ultrasonic thickness gauge according to claim 1, characterized in that: Casters are provided at the flip ends of the front footrest (4a), the rear front footrest (4b), the front rear footrest (5a), and the rear rear footrest (5b).

4. The pulse electromagnetic ultrasonic thickness gauge according to claim 1, characterized in that: The driving mechanism (6) comprises a rotary cylinder (61) and a rotary rod (66). Two polygonal combination columns (62) are slidably sleeved inside the rotary cylinder (61). The outer ends of the two polygonal combination columns (62) extend to the front and rear ends of the rotary cylinder (61) and are longitudinally aligned with the input ends of the two combination mechanisms (7). The side walls of the two polygonal combination columns (62) are each provided with an annular sliding groove, and the two annular sliding grooves are each movably sleeved with a lever (63). The side wall of the rotary cylinder (61) is movably sleeved. A connecting frame (67) is connected, the connecting frame (67) is fixedly connected to the inner wall of the main body frame (3), the rotary rod (66) passes through the top of the main body frame (3) to the inside, the rotary rod (66) is connected to the valve type transmission mechanism (9), the bottom end of the rotary rod (66) is fixedly connected to an active bevel gear (65), the side wall of the active bevel gear (65) is meshed with a passive bevel gear (64), and the passive bevel gear (64) is fixedly connected to the side wall of the rotary cylinder (61).

5. A pulse electromagnetic ultrasonic thickness gauge according to claim 4, characterized in that: The combination mechanism (7) comprises a fixed shell (71), a worm (73) being movably sleeved on the inner wall of the fixed shell (71), a worm wheel (72) being meshed on the side wall of the worm (73), the inner wall of the worm wheel (72) being connected to the belt transmission mechanism (8) via a connecting shaft (78), a passive bevel gear (74) being fixedly connected to the side wall of the worm (73), a driving bevel gear (75) being meshed on the side wall of the passive bevel gear (74), a rotary hole penetrating to the inside of the fixed shell (71) being provided at the back, a reversing column (76) being movably sleeved in the rotary hole, the reversing column (76) being fixedly connected to the inner wall of the driving bevel gear (75), and an end column (77) for combining with the polygonal combination column (62) being provided at the back of the reversing column (76).

6. The pulse electromagnetic ultrasonic thickness gauge according to claim 5, characterized in that: The end column (77) is in the shape of a polygon, and one end of the polygonal combined column (62) is provided with a slot that matches the shape and size of the end column (77).

7. The pulse electromagnetic ultrasonic thickness gauge according to claim 4, characterized in that: The valve type transmission mechanism (9) comprises two pulleys (91), two double-groove pulleys (92), two pulleys (93) and a bracket body (94). The two pulleys (91) are fixedly connected to the side walls of the rotating rods (66) of the two driving mechanisms (6), respectively. The two double-groove pulleys (92) and the pulleys (93) are movably sleeved on the top of the main disc frame (3). The pulleys (91) and the double-groove pulleys (92) are connected to each other through a transmission belt (1), and the double-groove pulleys (92) and the pulleys (93) are connected to each other through a transmission belt (2). A connector (95) is installed on the top of the bracket body (94). Two through holes are provided on the top of the bracket body (94) to penetrate the inside. The output end of the connector (95) passes through the two through holes and is combined and connected with the two pulleys (93).

8. The pulse electromagnetic ultrasonic thickness gauge according to claim 7, characterized in that: The connector (95) comprises an outer solid shell (951), an inner movable shell (952) is slidably sleeved inside the outer solid shell (951), two mutually meshing linkage gears (953) are movably sleeved on the inner wall of the inner movable shell (952), the bottom centers of the two linkage gears (953) are fixedly connected with polygonal bottom columns (954), the two polygonal bottom columns (954) penetrate the bottom of the inner movable shell (952), the tops of the two pulleys (93) are provided with connection grooves matching the shape and size of the connector (95), the top of the outer solid shell (951) is provided with a threaded hole penetrating to the inside, a screw rod (955) is threadedly sleeved in the threaded hole, and the bottom end of the screw rod (955) is movably connected to the top of the inner movable shell (952).

9. The pulse electromagnetic ultrasonic thickness gauge according to claim 1, characterized in that: The front and back sides of the main body rack (3) are both provided with inner grooves (34), and the front footrest (4a), the back footrest (4b), the front footrest (5a), and the back footrest (5b) are respectively arranged in the two inner grooves (34).

10. The pulse electromagnetic ultrasonic thickness gauge according to claim 4, characterized in that: Two limiting grooves (35) are provided on both sides of the main body disc frame (3), and the ends of the two shifting rods (63) away from the polygonal combination column (62) respectively pass through the two limiting grooves (35).

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