CN212409753U

CN212409753U - Ultrasonic instrument calibration auxiliary device

Info

Publication number: CN212409753U
Application number: CN202020973952.2U
Authority: CN
Inventors: 赵立; 胡建胜; 钟丰平
Original assignee: Zhejiang Institute of Special Equipment Science
Current assignee: Zhejiang Institute of Special Equipment Science
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-01-26
Anticipated expiration: 2030-06-01

Abstract

The utility model relates to an supersound instrument calibration auxiliary device. The purpose is to provide a probe closing device, makes the probe keep pressure invariable on the test block to guarantee the accuracy of horizontal linearity and vertical linearity test result. The technical scheme is as follows: ultrasonic instrument calibration auxiliary device, its characterized in that: the device comprises a groove-shaped bracket, a lifting compression bar and a clamping probe assembly; the opening of the groove-shaped support is downward, and the supporting legs at the two sides are respectively adsorbed on the plane of the standard test block through a strong magnet; the space between the two side supporting legs is used for placing the ultrasonic probe; the center of the top of the groove-shaped support is provided with a screw hole with a vertically arranged axis; the lifting pressure lever is screwed in and matched with the screw hole through an external thread on the outer surface of the lifting pressure lever and is rotatably positioned on the groove-shaped bracket; the lower end of the inner cavity of the lifting pressure lever is provided with a pressure head in a screw shape, and the pressure head end at the bottom of the lifting pressure lever extends downwards out of the outer sleeve and then is connected with the clamping probe assembly through threads.

Description

Ultrasonic instrument calibration auxiliary device

Technical Field

The utility model relates to an ultrasonic instrument calibration auxiliary device specifically is an auxiliary device when testing to the horizontal linearity and the vertical linearity in ultrasonic instrument and the probe combination performance.

Background

It is stated in NB/T47013.3-2015 that horizontal and vertical linearity in performance of the instrument and probe combination is approved and recorded at least once per year, and that operational checks and records are performed at least once every 3 months for analog ultrasound detectors or every 6 months for digital ultrasound detectors.

In the actual test process, the hand-pressing probe is often unstable, so that the measured data change is large, and the accuracy of the detection result is influenced. There is no special probe hold down device on the market today, which brings difficulties to the regular verification and approval of the instrument and probe.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the above-mentioned background art, provide a probe closing device, make the probe keep pressure invariable on the test block to guarantee the accuracy of horizontal linearity and vertical linearity test result.

The utility model provides a technical scheme is:

ultrasonic instrument calibration auxiliary device, its characterized in that: the device comprises a groove-shaped bracket, a lifting compression bar and a clamping probe assembly; the opening of the groove-shaped support is downward, and the supporting legs at the two sides are respectively adsorbed on the plane of the standard test block through a strong magnet; the space between the two side supporting legs is used for placing the ultrasonic probe; the center of the top of the groove-shaped support is provided with a screw hole with a vertically arranged axis; the lifting pressure lever is screwed in and matched with the screw hole through an external thread on the outer surface of the lifting pressure lever and is rotatably positioned on the groove-shaped bracket; the lower end of the inner cavity of the lifting pressure lever is provided with a pressure head in a screw shape, and the pressure head end at the bottom of the lifting pressure lever extends downwards out of the outer sleeve and then is connected with the clamping probe assembly through threads; a round rod scale with scales is inserted in the inner cavity of the lifting pressure rod, the bottom end of the round rod scale is abutted against the top end of the pressure head, and a spring sleeved on the round rod scale exerts downward jacking pressure on the pressure head.

The clamping probe assembly is C-shaped, and two steel blocks are left after the middle of the clamping probe assembly is provided with a groove; the distance between the two steel blocks is larger than the wiring end for clamping the ultrasonic probe.

The top end of the lifting pressure rod is fixed with a top cover, and the upper end and the lower end of the spring respectively apply jacking pressure to the top cover and the pressure head through a plane thrust bearing.

The powerful magnet is provided with a switch for adjusting the polarity of the magnet.

The utility model has the advantages that:

the utility model discloses can realize letting ultrasonic probe press on the standard test block with a constant force, keep measuring the accuracy of ultrasonic instrument and probe combination performance level linearity and vertical linearity. Simple structure, it is nimble small and exquisite, it is all very convenient to use and accomodate.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a front view of the clamping probe member of fig. 1.

Fig. 3 is a left side view of the clamping probe member of fig. 1.

Fig. 4 is a schematic top view of the clamping probe member of fig. 1.

Fig. 5 is a front view of the probe with the terminals above.

Fig. 6 is a schematic top view of the probe of fig. 5.

Fig. 7 is a front view of the probe with terminals on the side.

Fig. 8 is a schematic top view of the probe of fig. 7.

Detailed Description

The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.

As shown in fig. 1, the shape of a groove-shaped support 2 is square, the front and the back are hollow, the opening is downward, a channel for placing a probe is formed, a strong magnet 1 (purchased part) is arranged below the support, and the lower ends of a left supporting leg and a right supporting leg are respectively provided with 1; the strong magnet is provided with a switch for adjusting the polarity of the magnet, so that the groove-shaped bracket can be firmly adsorbed on the surface of the standard test block 12 (steel test block). A sleeve-shaped lifting pressure rod 3 is arranged above the groove-shaped bracket and is shaped like a hollow screw cap; the lifting pressure lever 3 is matched with a screw hole in the groove-shaped support 2 through threads, and the lifting pressure lever can be lifted by screwing the top end of the lifting pressure lever. The upper part of the lifting pressure lever 3 is provided with a gland 4 which is connected with the lower component through 4 countersunk head screws 5. A round bar scale 6 is coaxially arranged in the inner cavity of the lifting pressure rod 3, and scales are marked on the outer surface of the round bar scale (the scales are arranged along the axial direction of the lifting pressure rod) and used for indicating the magnitude of pressing force; the round bar staff gauge 6 is sleeved with a spring 8 and two plane thrust bearings 7 in a penetrating manner, the spring 8 is used for transmitting downward pressure, and the plane thrust bearings can facilitate the rotation of the lifting pressure lever 3. The pressure head 9 is arranged below the round rod staff gauge and can slide up and down, and the lower end of the pressure head extends out of the lifting pressure rod downwards and then is connected with the clamping probe assembly 10 through threads; the clamping probe assembly is C-shaped, and two steel blocks 10-1 are left after the middle of the clamping probe assembly is provided with a groove; the distance between the two steel blocks is larger than the wiring end 11-1 for clamping the ultrasonic probe, so that the ultrasonic probe 11 with the probe wiring end on the upper side can be pressed (as shown in figure 1, the two steel blocks avoid the probe wiring end, directly press the main body of the ultrasonic probe, and further clamp the ultrasonic probe together with the test block); the clamping probe assembly can also directly press the ultrasonic probe 13 with the probe terminal on the side surface; during testing, the ultrasonic probe is placed on the upper surface of the standard test block.

The utility model discloses an installation step does:

1. the lower parts of the supporting legs at the two sides of the groove-shaped support 2 are hollow, and a finished product powerful magnet with a switch can be arranged in the hollow space;

2. firstly, a pressure head 9 is placed into a sleeve-shaped lifting pressure rod 3, then a plane thrust bearing 7 is placed into the lifting pressure rod, then a spring 8 and a round rod scale 6 are placed into the lifting pressure rod, then a plane thrust bearing 7 is placed into the lifting pressure rod, a gland 4 is installed above the lifting pressure rod, and the gland 4 is fastened through a screw 5; and then the lifting pressure lever 3 is screwed into the thread of the groove-shaped bracket, and the pressure head 9 is connected to the clamping probe assembly 10 through the thread.

The utility model discloses a theory of operation:

the groove-shaped support is adsorbed on the surface of the steel test block according to the powerful magnet, and the powerful magnet is provided with the polar switch knob, so that the groove-shaped support can be adsorbed and separated from the surface of the standard test block. The lifting pressure rod is connected with the groove-shaped support through threads, and the top end of the lifting pressure rod is screwed by hands, so that the lifting pressure rod can lift up and down to adjust the pressing force. The round bar scale is used for instructing the pressure value size, and the zero-bit of pressure value is parallel and level with the up end of gland, and lifting depression bar is more downward, and the round bar scale more upward movement, and the pressure value indicated value is big more, can obtain corresponding probe pressure according to actual need like this to the pressure value of measuring when guaranteeing to adjust the same scale value at every turn keeps invariable.

Claims

1. Ultrasonic instrument calibration auxiliary device, its characterized in that: the device comprises a groove-shaped bracket (2), a lifting compression bar (3) and a clamping probe assembly (10); the opening of the groove-shaped support is downward, and the supporting legs at the two sides are respectively adsorbed on the plane of the standard test block through a strong magnet (1); the space between the two side supporting legs is used for installing an ultrasonic probe; the center of the top of the bracket is provided with a screw hole with a vertically arranged axis; the lifting pressure lever is screwed in and matched with the screw hole through an external thread on the outer surface of the lifting pressure lever and is rotatably positioned on the groove-shaped bracket; a screw-shaped pressure head (9) is arranged at the lower end of the inner cavity of the lifting pressure rod, and the pressure head end at the bottom of the lifting pressure rod extends downwards out of the outer sleeve and then is connected with the clamping probe assembly through threads; a round rod scale (6) with scales is inserted in the inner cavity of the lifting pressure rod, the bottom end of the round rod scale is abutted against the top end of the pressure head, and a spring (8) which is sleeved on the round rod scale in a penetrating way exerts downward jacking pressure on the pressure head.

2. The ultrasound instrument calibration assistance device of claim 1, wherein: the clamping probe assembly is C-shaped, and two steel blocks (10-1) are left after the middle of the clamping probe assembly is provided with a groove; the distance between the two steel blocks is larger than a terminal (11-1) for clamping the ultrasonic probe.

3. The ultrasound instrument calibration assistance device of claim 2, wherein: the top end of the lifting pressure rod is fixed with a top cover (4), and the upper end and the lower end of the spring respectively apply top pressure to the top cover and the pressure head through a plane thrust bearing (7).

4. The ultrasound instrument calibration assistance device of claim 3, wherein: the powerful magnet is provided with a switch for adjusting the polarity of the magnet.