A TOFD ultrasonic nondestructive testing self-positioning fixture

Abstract

The utility model relates to the field of TOFD ultrasonic nondestructive testing, and specifically to a TOFD ultrasonic nondestructive testing self-positioning fixture, including an ultrasonic testing fixture table for carrying and installing fixture components, and a manual telescopic rod, which is arranged above the ultrasonic testing fixture table. The utility model is provided with fixing bolts, a fixture frame, a telescopic cylinder, a clamping frame, a hydraulic cylinder, a hydraulic rod and a pneumatic suction head. When the device is used for TOFD ultrasonic nondestructive testing, the position of the fixture frame can be freely adjusted by fixing bolts according to the size and external shape of the workpiece currently to be tested, and then the clamping frame is driven by the telescopic cylinder to adjust the angle on the fixture frame, so that the fixture frame drives the contact plate and the contact screw to press down and clamp the edge of the workpiece, and then cooperates with the hydraulic cylinder and the hydraulic rod to descend, so that the clamping cabin frame and the pneumatic suction head are attached to the surface of the workpiece from above to clamp the workpiece.

Description

Technical Field

[0001] The utility model relates to the field of TOFD ultrasonic nondestructive testing, in particular to a TOFD ultrasonic nondestructive testing self-positioning fixture. Background Art

[0002] TOFD technology is a detection technology that relies on the diffraction waves emitted by the interaction between ultrasonic waves and the ends of defects to detect defects and perform quantitative testing on them. Non-destructive testing is a detection technology that was generated and developed on the basis of modern science. With the help of advanced technology and instruments, it can conduct high-sensitivity and high-reliability inspection and testing of the internal and surface structure, properties, and state of the inspected object without damaging or changing the physical and chemical state of the inspected object, so as to judge their continuity, integrity, safety and other performance indicators. In the process of TOFD ultrasonic non-destructive testing, a fixture is needed. A fixture is a device used to fix the processing object and ensure that it occupies the correct position during the mechanical manufacturing process. The function of the fixture is to install the workpiece conveniently, quickly and safely to ensure that the position of the workpiece will not change during the processing process.

[0003] After searching, a mold detection and positioning fixture with a publication number of CN218137599U specifically discloses a mold detection and positioning fixture, wherein two fixing plates are fixedly installed on the top surface of the printer base, and a placement plate and a clamping component are fixedly installed on the top surface of the printer base. The clamping component is arranged between the two fixing plates, and is used to clamp and fix the printed mold. By setting the clamping component, the molds of different positions and shapes manufactured by the printer can be detected and positioned. The mold detection and positioning fixture can prevent shaking during the printing process, which may cause the position of the printed mold to shift, thereby improving the accuracy of the printer and the quality of the printed mold. By setting an electric push rod, the fixture body can move with the extension and retraction of the telescopic shaft of the electric push rod, so that the fixture body can clamp smaller molds, thereby improving the practicality of the fixture body.

[0004] During the use of the existing TOFD ultrasonic non-destructive testing self-positioning fixture, the workpiece undergoing TOFD ultrasonic non-destructive testing has different detection positions and shapes and sizes, so the clamping position and clamping force of the required fixture are also different. The conventional left and right clamping fixture not only cannot meet the special workpiece clamping and fixation requirements in TOFD ultrasonic non-destructive testing, but the left and right clamping fixture is also inconvenient for TOFD ultrasonic non-destructive testing. In addition, the fixture in the above-mentioned comparative case also lacks other self-positioning clamping methods. This will not only affect the normal non-destructive testing work of TOFD ultrasonic testing under long-term use, but also narrow the scope of use of the overall fixture, making it inconvenient to use with TOFD ultrasonic non-destructive testing.

[0005] Therefore, it is necessary to invent a TOFD ultrasonic nondestructive testing self-positioning fixture to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a TOFD ultrasonic non-destructive testing self-positioning fixture, which not only expands the overall use range of the device through fixing bolts, fixture frames, telescopic cylinders, clamping frames, hydraulic cylinders, hydraulic rods and pneumatic suction heads, but also meets the clamping work of workpieces of different sizes, and at the same time enables the device to have the ability of self-positioning clamping, and does not hinder the TOFD ultrasonic non-destructive testing work, and is convenient for use with TOFD ultrasonic non-destructive testing, so as to solve the problem in the prior art that the TOFD ultrasonic non-destructive testing self-positioning fixture is used during the use of the TOFD ultrasonic non-destructive testing. The detection position of the workpiece and the shape and size of the workpiece are different, and the clamping position and clamping force of the required fixture are also different. The conventional left-right clamping fixture not only cannot meet the special workpiece clamping and fixation in TOFD ultrasonic non-destructive testing, but also the left-right clamping fixture is not convenient for TOFD ultrasonic non-destructive testing. In addition, the fixture in the above comparative case also lacks other self-positioning clamping methods. This will not only affect the normal non-destructive testing of TOFD ultrasonic under long-term use, but also narrow the use scope of the overall fixture, which is not convenient for use with TOFD ultrasonic non-destructive testing.

[0007] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: a TOFD ultrasonic nondestructive testing self-positioning fixture, comprising an ultrasonic testing fixture table for carrying and installing fixture components;

[0008] A manual telescopic rod is arranged above the ultrasonic testing fixture table and is used to adjust the height of the supporting top frame. A fixing knob is passed through the outside of the manual telescopic rod, and the supporting top frame is fixedly installed on the top of the manual telescopic rod.

[0009] A fixing bolt passes through the top of the ultrasonic testing fixture platen and is used to connect and install the fixture frame, and the interior of the fixture frame is movably connected with a movable shaft, and a telescopic cylinder is arranged outside the fixture frame, a clamping frame is fixedly installed on one end of the telescopic cylinder, and a resistance plate is fixedly installed on the other end of the clamping frame, and a resistance screw passes through the outside of the resistance plate;

[0010] The linkage frame rod is arranged above the supporting top frame and is used for connecting and installing the clamping frame. A hydraulic cylinder is arranged above the clamping frame. The hydraulic cylinder is movably connected with a hydraulic rod inside. A pneumatic suction head is fixedly installed at the bottom of the clamping frame.

[0011] Preferably, a threaded support frame is movably connected to the bottom of the ultrasonic testing fixture table, a positioning mounting block is fixedly installed on the outside of the ultrasonic testing fixture table, and a positioning bolt penetrates the top of the positioning mounting block.

[0012] Preferably, the clamping frame is movably connected to the fixture frame, and the abutment screw is symmetrically arranged about the central axis of the abutment plate.

[0013] Preferably, the clamping cabin frame is movably connected to the supporting top frame, and the hydraulic cylinder and the hydraulic rod are vertically distributed.

[0014] Preferably, the number of the pneumatic suction heads is set to seven, and the seven pneumatic suction heads are distributed at equal intervals on the clamping cabin frame.

[0015] Preferably, a pressurized air pump is arranged above the supporting top frame, one end of the pressurized air pump is fixedly connected to an exhaust pipe, and the other end of the exhaust pipe is fixedly installed with a transfer exhaust cavity.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model is provided with fixing bolts, a fixture frame, a telescopic cylinder, a clamping frame, a hydraulic cylinder, a hydraulic rod and a pneumatic suction head. When the device is used for TOFD ultrasonic nondestructive testing, the position of the fixture frame can be freely adjusted by the fixing bolts according to the size and external shape of the workpiece currently to be tested, and then the clamping frame is driven to adjust the angle on the fixture frame by the telescopic cylinder, so that the fixture frame drives the contact plate and the contact screw to press down and clamp the edge of the workpiece, and then the hydraulic cylinder and the hydraulic rod are lowered to make the clamping cabin frame and the pneumatic suction head fit on the surface of the workpiece from above to clamp the workpiece. This not only expands the overall use range of the device, but also meets the clamping work of workpieces of different sizes, and at the same time enables the device to have the ability of self-positioning and clamping, and does not hinder the TOFD ultrasonic nondestructive testing work, so it is convenient to use with TOFD ultrasonic nondestructive testing;

[0018] 2. The utility model is provided with an ultrasonic testing fixture table, a threaded support frame, a positioning mounting block, a positioning bolt, a manual telescopic rod, a fixing knob and a supporting top frame. When the device is used for TOFD ultrasonic nondestructive testing, the device can be directly connected and installed with the testing table of the TOFD ultrasonic nondestructive testing device through the positioning mounting block and the positioning bolt according to the current use and testing environment. The threaded support frame can also be installed on the bottom of the ultrasonic testing fixture table for separate use. The position of the manual telescopic rod and the supporting top frame can also be adjusted according to the current height of the workpiece, so that the device can meet the detection of workpieces of different heights and expand the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the supporting top frame structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the clamping frame of the utility model;

[0023] Figure 4 This is a schematic diagram of the linkage rod structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the exhaust pipeline structure of the utility model.

[0025] Description of reference numerals:

[0026] 1. Ultrasonic testing fixture table; 2. Threaded support frame; 3. Positioning mounting block; 4. Positioning bolt; 5. Manual telescopic rod; 6. Fixing knob; 7. Support top frame; 8. Fixing bolt; 9. Fixture frame; 10. Movable shaft; 11. Telescopic cylinder; 12. Clamping frame; 13. Resistance plate; 14. Resistance screw; 15. Linking frame rod; 16. Clamping cabin frame; 17. Hydraulic cylinder; 18. Hydraulic rod; 19. Pneumatic suction head; 20. Pressurized air pump; 21. Exhaust pipe; 22. Transfer exhaust chamber. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-5 A TOFD ultrasonic nondestructive testing self-positioning fixture shown includes an ultrasonic testing fixture plate 1 for carrying and installing fixture components;

[0029] A manual telescopic rod 5 is arranged above the ultrasonic testing fixture plate 1 and is used to adjust the height of the supporting top frame 7. A fixing knob 6 is passed through the outside of the manual telescopic rod 5, and a supporting top frame 7 is fixedly installed on the top of the manual telescopic rod 5.

[0030] A fixing bolt 8 passes through the top of the ultrasonic testing fixture plate 1 and is used to connect and install the fixture frame 9, and the inside of the fixture frame 9 is movably connected with a movable shaft 10, and a telescopic cylinder 11 is arranged outside the fixture frame 9, and a clamping frame 12 is fixedly installed on one end of the telescopic cylinder 11, and a contact plate 13 is fixedly installed on the other end of the clamping frame 12, and a contact screw 14 passes through the outside of the contact plate 13;

[0031] The linkage frame rod 15 is arranged above the supporting top frame 7 and is used for connecting and installing the clamping frame 16. A hydraulic cylinder 17 is arranged above the clamping frame 16. The hydraulic cylinder 17 is internally movably connected with a hydraulic rod 18. A pneumatic suction head 19 is fixedly installed at the bottom of the clamping frame 16. The hydraulic cylinder 17 and the hydraulic rod 18 descend to allow the clamping frame 16 and the pneumatic suction head 19 to fit the surface of the workpiece from above to clamp the workpiece. This not only expands the overall use range of the device, but also meets the clamping work of workpieces of different sizes.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a threaded support frame 2 is movably connected to the bottom of the ultrasonic testing fixture table 1, and a positioning mounting block 3 is fixedly installed on the outside of the ultrasonic testing fixture table 1. A positioning bolt 4 passes through the top of the positioning mounting block 3. The device is directly connected and installed with the testing table of the TOFD ultrasonic non-destructive testing device through the positioning mounting block 3 and the positioning bolt 4. The threaded support frame 2 can also be installed on the bottom of the ultrasonic testing fixture table 1 for separate use. The clamping frame 12 is movably connected to the clamping frame 9, and the abutment screw 14 is symmetrically arranged with the central axis of the abutment plate 13. The clamping frame 12 is driven by the telescopic cylinder 11 to adjust the angle on the clamping frame 9, so that the clamping frame 9 drives the abutment plate 13 and the abutment screw 14 to press down and clamp the edge of the workpiece.

[0033] like Figure 1 , Figure 4 and Figure 5As shown, the clamping cabin frame 16 is movably connected to the supporting top frame 7, and the hydraulic cylinder 17 and the hydraulic rod 18 are vertically distributed. The power of the hydraulic cylinder 17 and the hydraulic rod 18 is sufficient to drive the clamping cabin frame 16 to clamp and fix the workpiece from above. The number of pneumatic suction heads 19 is set to seven, and the seven pneumatic suction heads 19 are evenly spaced on the clamping cabin frame 16. The pneumatic suction heads 19 have a simple structure and are easy to operate. If a failure occurs, it is also convenient for maintenance personnel to replace them in time without delaying the normal use of the device. A pressurized air pump 20 is arranged above the supporting top frame 7, and one end of the pressurized air pump 20 is fixedly connected to an exhaust pipe 21, and the other end of the exhaust pipe 21 is fixedly installed with a transfer exhaust cavity 22. The pressurized air pump 20 allows the pneumatic suction head 19 to generate suction through the transfer exhaust cavity 22. In this way, when the workpiece is pressed down from above, the pneumatic suction head 19 has a certain suction force, which also strengthens the stability of the workpiece after clamping.

[0034] The practical working principle of the present invention is as follows: first, the external power supply is turned on. According to the current use and detection environment, the device is directly connected and installed to the detection table of the TOFD ultrasonic non-destructive testing device through the positioning mounting block 3 and the positioning bolt 4. The threaded support frame 2 can also be installed on the bottom of the ultrasonic detection fixture plate 1 for separate use. Then, take out the workpiece that needs to be non-destructively tested. According to the height and size of the workpiece, first adjust the position of the manual telescopic rod 5 and the supporting top frame 7, so that the device can meet the detection of workpieces of different heights. Then, according to the external shape of the workpiece that needs to be tested, the position of the clamp frame 9 is freely adjusted through the fixing bolt 8, and then the clamp frame 12 is driven by the telescopic cylinder 11 to adjust the angle on the clamp frame 9, so that the clamp frame 9 drives the contact plate 13 and the contact screw 14 to press down and clamp the edge of the workpiece. Then, the switch of the hydraulic cylinder 17 is turned on, and the hydraulic cylinder 17 and the hydraulic rod 18 descend, allowing the clamping cabin frame 16 and the pneumatic suction head 19 to move from the top. The pneumatic suction head 19 is fitted on the surface of the workpiece to clamp the workpiece, and then the switch of the pressurized air pump 20 is turned on. The pressurized air pump 20 allows the pneumatic suction head 19 to generate suction through the transfer vacuum chamber 22. In this way, when the workpiece is pressed down from above, the pneumatic suction head 19 has a certain suction force, and the stability of the workpiece after clamping is also strengthened. This not only expands the overall use range of the device, but also meets the clamping work of workpieces of different sizes. At the same time, the device has the ability of self-positioning clamping, and does not hinder the TOFD ultrasonic non-destructive testing work. After the clamping work is completed, the TOFD ultrasonic non-destructive testing device can start non-destructive testing on the workpiece surface. Finally, after completing the installation and use of all TOFD ultrasonic non-destructive testing self-positioning fixtures according to the above operations, turn off the switch of the hydraulic cylinder 17, turn off the switch of the pressurized air pump 20, and cut off the external power supply if it is not used for a long time. In this way, the use process of the TOFD ultrasonic non-destructive testing self-positioning fixture is completed.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A TOFD ultrasonic nondestructive testing self-positioning fixture, characterized by: include An ultrasonic testing fixture table (1) for carrying and installing fixture components; A manual telescopic rod (5) is arranged above the ultrasonic testing fixture table (1) and is used to adjust the height of the supporting top frame (7). A fixing knob (6) is passed through the outside of the manual telescopic rod (5). The top of the manual telescopic rod (5) is fixedly mounted with the supporting top frame (7); A fixing bolt (8) passes through the top of the ultrasonic testing fixture table (1) and is used to connect and install the fixture frame (9), and the fixture frame (9) is movably connected to a movable shaft (10) inside, and a telescopic cylinder (11) is arranged outside the fixture frame (9), a clamping frame (12) is fixedly installed on one end of the telescopic cylinder (11), and a contact plate (13) is fixedly installed on the other end of the clamping frame (12), and a contact screw (14) passes through the outside of the contact plate (13); A linkage rod (15) is arranged above the supporting top frame (7) and is used for connecting and installing a clamping frame (16). A hydraulic cylinder (17) is arranged above the clamping frame (16). A hydraulic rod (18) is movably connected inside the hydraulic cylinder (17). A pneumatic suction head (19) is fixedly installed at the bottom of the clamping frame (16).

2. A TOFD ultrasonic nondestructive testing self-positioning fixture according to claim 1, characterized in that: The bottom of the ultrasonic detection fixture table (1) is movably connected to a threaded support frame (2), and a positioning installation block (3) is fixedly installed on the outside of the ultrasonic detection fixture table (1), and a positioning bolt (4) penetrates the top of the positioning installation block (3).

3. A TOFD ultrasonic nondestructive testing self-positioning fixture according to claim 1, characterized in that: The clamping frame (12) is movably connected to the clamp frame (9), and the abutment screw (14) is symmetrically arranged with respect to the central axis of the abutment plate (13).

4. A TOFD ultrasonic nondestructive testing self-positioning fixture according to claim 1, characterized in that: The clamping cabin frame (16) is movably connected to the supporting top frame (7), and the hydraulic cylinder (17) and the hydraulic rod (18) are vertically distributed.

5. A TOFD ultrasonic nondestructive testing self-positioning fixture according to claim 1, characterized in that: The number of the pneumatic suction heads (19) is set to seven, and the seven pneumatic suction heads (19) are distributed at equal intervals on the clamping cabin frame (16).

6. A TOFD ultrasonic nondestructive testing self-positioning fixture according to claim 1, characterized in that: A pressurized air pump (20) is arranged above the supporting top frame (7), one end of the pressurized air pump (20) is fixedly connected to an exhaust pipe (21), and the other end of the exhaust pipe (21) is fixedly installed with a transfer exhaust cavity (22).

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