CN215066364U

CN215066364U - Clamping jaw, support and air coupling ultrasonic detection clamp

Info

Publication number: CN215066364U
Application number: CN202120655181.7U
Authority: CN
Inventors: 陈汉新; 刘明明; 李森; 李梦龙; 胡振宇
Original assignee: Wuhan Institute of Technology
Current assignee: Wuhan Institute of Technology
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-07
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses a clamping jaw, a bracket and an air coupling ultrasonic detection clamp, the clamping jaw comprises a connecting rod, a moving ring, a U-shaped piece, two clamping racks and two connecting rods, one end of the connecting rod is provided with external threads, an inner hole of the moving ring is provided with internal threads matched with the external threads on the connecting rod, the moving ring is in threaded connection with the connecting rod, the bottom of the U-shaped piece is provided with a through hole, one end of the connecting rod provided with the external threads passes through the through hole, the U-shaped piece is rotationally connected with the moving ring, one end of the two clamping racks is respectively rotationally connected with the two ends of the U-shaped piece, the two clamping racks are in one-to-one correspondence with the two connecting rods, one end of the two connecting rods is rotationally connected with the end part of the connecting rod provided with the external threads, the other end of the two connecting rods is rotationally connected with the corresponding clamping racks, the moving ring is rotated to enable the U-shaped piece to move along the length direction of the connecting rod and drive the two clamping racks to be clamped or loosened, the clamping device is simple in structure, convenient to clamp or loosen and good in clamping effect.

Description

Clamping jaw, support and air coupling ultrasonic detection clamp

Technical Field

The utility model belongs to the ultrasonic testing frock field especially relates to a clamping jaw, support and air coupling ultrasonic testing anchor clamps.

Background

The ultrasonic penetration method is the most common one applied in the air coupling ultrasonic detection at present, and the detection principle of the air coupling ultrasonic penetration method is that a transmitting probe and a receiving probe are respectively placed on two sides of a detected workpiece, and the central axes of the two probes are overlapped and are vertical to the upper surface and the lower surface of the workpiece. The penetration method is simple in principle, when the inside of a workpiece is intact, ultrasonic energy penetrating through the workpiece is high, otherwise, when the inside of the workpiece contains defects (such as layering, holes, debonding and the like), the defects consume part of ultrasonic energy, the ultrasonic energy penetrating through the workpiece is relatively low, the penetration method can effectively detect the layering defects of the composite materials, can detect the point-shaped welding points in the thin steel plate, can detect the materials with good uniformity and small attenuation, and can determine the thickness and the sound velocity of the materials according to the frequency spectrum characteristics of penetration signals. At present, a tested piece can be in different states, for example, probes on two sides are unstable and are not on the same axis, the distance from the tested piece has deviation, and the states of the probes and the tested piece have certain influence on an experimental result. In order to ensure the reliability of the experimental result, an adjustable test fixture can be adopted to assist the penetration type air coupling ultrasonic to carry out detection.

All the drawbacks of the present ultrasound probes: 1. due to the influence of human factors, certain errors exist in the relative angle, the coaxiality and the relative distance of the two emission probes, detection errors 2 can be caused, the probes which can be clamped are single and cannot be changed according to actual requirements, the size of a test piece is greatly limited 3, multiple persons are required for matching in the experiment, the experiment is troublesome, the progress of the experiment is influenced 4, the probes and the test piece are difficult to ensure to be in ideal relative positions during measurement, and the experiment precision can be reduced. 5. The safety of the probe cannot be ensured during measurement, resource waste is easily caused, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the technical scheme of the utility model as follows: a clamping jaw comprises a connecting rod, a moving ring, a U-shaped piece, two clamping racks and two connecting rods, wherein one end of the connecting rod is provided with an external thread, the inner hole of the moving ring is provided with an internal thread which is in threaded fit with the external thread on the connecting rod, the moving ring is in threaded connection with the connecting rod, the bottom of the U-shaped piece and the end provided with the through hole, the end of the connecting rod provided with the external thread penetrates through the through hole, just the U-shaped spare with the shift ring rotates to be connected, two the one end of pressing from both sides the rack rotate respectively with the both ends of U-shaped spare are rotated and are connected, two press from both sides rack and two connecting rod one-to-one, two the one end of connecting rod all with the connecting rod is equipped with the tip rotation of external screw thread one end and is connected, two the other end of connecting rod all with correspond press from both sides the rack and rotate to be connected, rotate the shift ring so that the U-shaped spare is followed the length direction of connecting rod removes and drives two clamp racks by two connecting rods and press from both sides tight or loosen.

The beneficial effects of the above technical scheme are that: the clamping device is simple in structure, convenient to clamp or loosen and good in clamping effect.

The second objective of the present invention is to provide a support with simple structure, easy operation and convenient adjustment.

In order to achieve the above object, another technical solution of the present invention is as follows: the utility model provides a support, includes the first framework, lead screw, slider and as above that the level set up the clamping jaw, first framework is square, slider slidable mounting in on the side of first framework one side, the connecting rod keep away from its external screw thread one end with the slider is connected fixedly, the U-shaped piece orientation in the first framework, install through the bearing frame respectively at the both ends of lead screw on the side that first framework is equipped with slider one side, just be equipped with on the slider and run through lead screw matched with screw, the lead screw passes the screw, and the two threaded connection, rotate the lead screw is with the drive the slider drives the clamping jaw is followed the side that corresponds of first framework removes.

The beneficial effects of the above technical scheme are that: the position of the clamping jaw can be conveniently adjusted, meanwhile, the position of the clamping jaw cannot be easily moved, and the stability is good.

Another object of the utility model is to provide an air coupling ultrasonic testing anchor clamps that simple structure, and accurate survey precision is high, and the concurrent operation is simple and convenient.

In order to achieve the above purpose, the technical solution of the present invention is as follows: an air coupling ultrasonic detection clamp comprises a second frame body, four upright posts and two supports, wherein the two first frame bodies are horizontally arranged and vertically distributed at intervals, the second frame body is square and horizontally arranged between the two first frame bodies, corners of the second frame body and the two first frame bodies are aligned, the four upright posts are vertically arranged at four corners of the first frame body positioned below, the four corners of the second frame body and the first frame body positioned above are respectively in sliding connection with the four upright posts, the second frame body and the first frame body positioned above can vertically move along the four upright posts, locking parts are respectively arranged on the second frame body and the first frame body positioned above, and the locking parts are used for fixing the corresponding second frame body and the first frame body positioned above at any position of a sliding track, and a supporting piece is arranged in the second frame body and used for supporting a test piece, and the two clamping jaws are used for clamping the ultrasonic probe and the ultrasonic transmitter respectively.

The beneficial effects of the above technical scheme are that: the horizontal height of the second frame body and the horizontal height of the first frame body above the second frame body can be flexibly adjusted, so that the distance between the test piece and the ultrasonic probe and the ultrasonic transmitter can be conveniently adjusted.

In the technical scheme, the supporting piece comprises two parallel sliding rods which are horizontally arranged in the second frame body, two ends of the sliding rods are respectively connected with two side edges of the second frame body in a sliding mode, a plurality of supporting plates are arranged on the sliding rods in a sliding mode, one end of each supporting plate extends to the position between the two sliding rods, and each supporting plate can slide along the length direction of the corresponding sliding rod.

The beneficial effects of the above technical scheme are that: the device has simple structure and convenient adjustment, and can meet the detection requirements of test pieces with different specifications.

In the technical scheme, the locking member comprises four barrels, the stand column is provided with external threads, each barrel inner hole is provided with internal threads, each barrel corresponding to the locking member is vertically arranged and corresponds to the four barrels of the second frame body or is positioned above the four corners of the first frame body, the barrel is connected with the corresponding stand column through threads, and the locking member is rotated to correspond to the four barrels of the second frame body or is positioned above the second frame body.

The beneficial effects of the above technical scheme are that: it has convenient regulation and good stability.

Drawings

Fig. 1 is an elevation view of a jaw according to embodiment 1 of the present invention;

FIG. 2 is a schematic view of a bracket according to embodiment 2 of the present invention;

FIG. 3 is a schematic view of a bracket according to embodiment 3 of the present invention;

fig. 4 is a combination view of the second frame body and the lifting member according to embodiment 3 of the present invention.

In the figure: 1 bracket, 11 clamping jaws, 111 connecting rods, 112 moving rings, 113U-shaped parts, 114 clamping racks, 115 connecting rods, 12 first frame bodies, 13 screw rods, 14 sliding blocks, 2 second frame bodies, 21 lifting pieces, 211 sliding rods, 212 supporting plates, 3 upright posts and 4 cylinders.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example 1

As shown in fig. 1, the present embodiment provides a clamping jaw, which includes a connecting rod 111, a moving ring 112, a U-shaped member 113, two clamping racks 114 and two connecting rods 115, wherein one end of the connecting rod 111 is provided with an external thread, an inner hole of the moving ring 112 is provided with an internal thread matched with the external thread on the connecting rod 111, the moving ring 112 is in threaded connection with the connecting rod 111, the bottom of the U-shaped member 113 is provided with a through hole, one end of the connecting rod 111 provided with the external thread passes through the through hole, the U-shaped member 113 is rotatably connected with the moving ring 112, one end of each of the two clamping racks 114 is respectively rotatably connected with two ends of the U-shaped member 113, the two clamping racks 114 are in one-to-one correspondence with the two connecting rods 115, one end of each of the two connecting rods 115 is rotatably connected with the end of the connecting rod 111 provided with the external thread, the other end of each of the two connecting rods 115 is rotatably connected with the corresponding clamping rack 114, the movable ring 112 is rotated to enable the U-shaped part 113 to move along the length direction of the connecting rod 111 and the two clamping racks 114 are driven by the two connecting rods 115 to clamp or loosen.

Example 2

As shown in fig. 2, the present embodiment provides a bracket, which includes a first frame 12, a screw 13, a slider 14, and a clamping jaw 11 according to embodiment 1, where the first frame 12 is square, the slider 14 is slidably mounted on a side edge of one side of the first frame 12, one end of the connecting rod 111, which is away from the external thread, is fixedly connected to the slider 14, the U-shaped member 113 faces the inside of the first frame 12, two ends of the screw 13 are respectively mounted on a side edge of the first frame 12, which is provided with the slider 14, through a bearing seat, and the slider 14 is provided with a screw hole matching with the screw 13, the screw 13 penetrates through the screw hole, and the screw 13 and the screw are connected through the screw, and the screw 13 is rotated to drive the slider 14 to drive the clamping jaw 11 to move along a side edge of the first frame 12, which corresponds to the side edge.

Example 3

As shown in fig. 3, the present embodiment provides an air-coupled ultrasonic testing fixture, which includes a second frame 2, four upright posts 3, and two supports 1 as described in embodiment 2, wherein the two first frames 12 are horizontally disposed and vertically spaced, the second frame 2 is square and horizontally disposed between the two first frames 12, corners of the second frame 2 and the two first frames 12 are aligned, the four upright posts 3 are vertically mounted at four corners of the first frame 12 located below, the four corners of the second frame 2 and the first frame 12 located above are respectively connected with the four upright posts 3 in a sliding manner, the second frame 2 and the first frame 12 located above can move up and down along the four upright posts 3, and locking members are respectively disposed on the second frame 2 and the first frame 12 located above, the retaining member is used for corresponding second framework 2 with be located the top first framework 12 is fixed in the optional position department of slip orbit, be equipped with in the second framework 2 and hold up piece 21, hold up piece 21 and be used for holding up the test piece, two clamping jaw 11 is used for pressing from both sides tight ultrasonic probe and ultrasonic emitter respectively, so regulation second framework that can be nimble with be located the top the level of first framework to be convenient for adjust the test piece to the interval between ultrasonic probe and the ultrasonic emitter.

As shown in fig. 4, in the above technical solution, the supporting member 21 includes two sliding rods 211, the two sliding rods 211 are parallel to each other and are horizontally disposed in the second frame body 2, two ends of the sliding rods 211 are respectively connected with two side edges of the second frame body 2, the sliding rods 211 are respectively provided with a plurality of supporting plates 212 in a sliding manner, one end of each supporting plate 212 extends between the two sliding rods 211, and each supporting plate 212 can slide along a length direction corresponding to the sliding rod 211.

Wherein, among the above-mentioned technical scheme the retaining member includes four pieces of barrel 4, all be equipped with the external screw thread on the stand 3, every 4 holes of barrel are equipped with the internal thread, every four pieces of barrel 4 that the retaining member corresponds respectively vertical setting and with correspond the second framework 2 or be located the top four corners of first framework 12 rotate to be connected, every barrel 4 respectively with correspond 3 threaded connection of stand rotate four that the retaining member corresponds the barrel 4 corresponds in order to adjust the second framework 2 or be located the top the level of first framework 12, its regulation is convenient, and stability is good.

Preferably, any one all be equipped with length scale along upper and lower direction on the stand, so convenient and fast's knowledge the second framework is to two the interval of first framework.

The first frame body and the second frame body are both rectangular frame bodies, the length of each side of each frame body is consistent, meanwhile, the long sides and the wide sides of the first frame body and the second frame body are respectively aligned, and the two connecting rods are horizontally arranged and are parallel to each other.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The clamping jaw is characterized by comprising a connecting rod (111), a moving ring (112), a U-shaped part (113), two clamping racks (114) and two connecting rods (115), wherein an external thread is arranged at one end of the connecting rod (111), an internal thread matched with the external thread on the connecting rod (111) is arranged in an inner hole of the moving ring (112), the moving ring (112) is in threaded connection with the connecting rod (111), the bottom of the U-shaped part (113) is provided with a through hole, one end of the connecting rod (111) provided with the external thread penetrates through the through hole, the U-shaped part (113) is in rotating connection with the moving ring (112), one ends of the two clamping racks (114) are respectively rotated and connected with the two ends of the U-shaped part (113), the two clamping racks (114) are in one-to-one correspondence with the two connecting rods (115), one end of the two connecting rods (115) is in rotating connection with the end part of the connecting rod (111) provided with the external thread end, the other ends of the two connecting rods (115) are rotatably connected with the corresponding clamping racks (114), the moving ring (112) is rotated to enable the U-shaped piece (113) to move along the length direction of the connecting rod (111), and the two clamping racks (114) are driven by the two connecting rods (115) to clamp or release.

2. The bracket according to claim 1, characterized by comprising a first frame (12) horizontally arranged, a screw rod (13), a sliding block (14) and the clamping jaw (11) according to claim 1, wherein the first frame (12) is square, the sliding block (14) is slidably mounted on the side edge of one side of the first frame (12), one end of the connecting rod (111) far away from the external thread thereof is fixedly connected with the sliding block (14), the U-shaped member (113) faces the inside of the first frame (12), two ends of the screw rod (13) are respectively mounted on the side edge of one side of the first frame (12) provided with the sliding block (14) through bearing seats, a screw hole which penetrates through the screw rod (13) is formed in the sliding block (14), the screw rod (13) penetrates through the screw hole and is connected with the screw hole, and the screw rod (13) is rotated to drive the sliding block (14) to drive the clamping jaw (11) along the side of the corresponding side of the first frame (12) The edge moves.

3. An air coupling ultrasonic detection clamp is characterized by comprising a second frame body (2), four stand columns (3) and two supports (1) according to claim 2, wherein the two first frame bodies (12) are horizontally arranged and vertically distributed at intervals, the second frame body (2) is square and horizontally arranged between the two first frame bodies (12), corners of the second frame body (2) and the two first frame bodies (12) are aligned, the four stand columns (3) are vertically arranged at four corners of the first frame body (12) positioned below, the second frame body (2) and the four corners of the first frame body (12) positioned above are respectively in sliding connection with the four stand columns (3), and the second frame body (2) and the first frame body (12) positioned above can move up and down along the four stand columns (3), and the second frame body (2) and the first frame body (12) positioned above are respectively provided with a locking part, the locking part is used for fixing the second frame body (2) corresponding to the first frame body (12) positioned above at any position of a sliding track, a supporting part (21) is arranged in the second frame body (2), the supporting part (21) is used for supporting a test piece, and the clamping jaws (11) are used for respectively clamping an ultrasonic probe and an ultrasonic transmitter.

4. The clamp for air-coupled ultrasonic detection according to claim 3, wherein the supporting member (21) comprises two sliding rods (211), the two sliding rods (211) are parallel to each other and horizontally disposed in the second frame body (2), two ends of each sliding rod (211) are slidably connected to two opposite sides of the second frame body (2), a plurality of supporting plates (212) are slidably disposed on each sliding rod (211), one end of each supporting plate (212) extends between the two sliding rods (211), and each supporting plate (212) can slide along a length direction corresponding to the corresponding sliding rod (211).

5. The clamp for air-coupled ultrasonic detection according to claim 3, wherein the locking member comprises four barrel bodies (4), the upright post (3) is provided with an external thread, an internal thread is provided in an inner hole of each barrel body (4), four barrel bodies (4) corresponding to each locking member are vertically arranged and rotatably connected with four corners corresponding to the second frame body (2) or the first frame body (12) above, each barrel body (4) is respectively connected with the corresponding upright post (3) through a thread, and the four barrel bodies (4) corresponding to the locking member are rotated to adjust the horizontal height of the corresponding second frame body (2) or the first frame body (12) above.