CN211347215U

CN211347215U - Ultrasonic stress test calibration device

Info

Publication number: CN211347215U
Application number: CN202020423723.3U
Authority: CN
Inventors: 吕婧
Original assignee: Beijing Weipaipu Technology Co ltd
Current assignee: Beijing Weipaipu Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-08-25
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses an ultrasonic wave stress test calibration device, including platform and the control unit, the upper surface of platform is provided with fixing base and sliding seat. The movable seat comprises a movable plate, sliding grooves are formed in two sides of the lower surface of the movable plate, sliding rails matched with the sliding grooves are arranged on the upper surface of the platform, and a transmission mechanism for driving the movable plate to slide on the platform is arranged on the lower surface of the movable plate. The clamp is fixedly arranged on the upper surface of the movable plate and comprises a mounting plate, a clamp plate is arranged above the mounting plate and fixedly connected with the mounting plate through a dismounting mechanism, a tension sensor is arranged between the clamp and the sample, one end of the tension sensor is clamped and fixed between the mounting plate and the clamp plate, and the other end of the tension sensor is fixedly connected with the sample. The utility model adopts the above structure ultrasonic stress test calibration device can solve the problem that can't carry out on-the-spot check to ultrasonic stress test device's precision, stability, has simple structure, convenient operation's advantage.

Description

Ultrasonic stress test calibration device

Technical Field

The utility model belongs to the technical field of stress detection equipment calibration device technique and specifically relates to an ultrasonic stress test calibration device for pressure vessel/pipeline under pressure stress detects is related to.

Background

The development of stress detection technology has formed dozens of detection methods. The methods are classified into three categories, namely damaged, semi-damaged and non-damaged according to whether the detected member is damaged or not. The ultrasonic stress test method has the characteristics of high resolution, high permeability and no harm to human bodies, and is one of the most promising technologies in the development direction of stress nondestructive testing. The ultrasonic stress detection technology is based on the acoustic elasticity theory, corresponding ultrasonic detection equipment is formed at present, and the ultrasonic stress detection equipment is used for stress detection of pipeline welding seams, high-speed rail tracks, armored car bodies, inner walls of cannon barrel tubes and the like, and obtains good application effect.

However, the ultrasonic stress detection technology lacks a field stress calibration device, and cannot check the precision and stability of equipment in the field stress test process, thereby influencing the field test result.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ultrasonic wave stress test calibration device solves the problem that can't carry out on-the-spot check to ultrasonic wave stress test device's precision, stability.

In order to achieve the above object, the utility model provides an ultrasonic stress test calibration device, which comprises a platform and a control unit, wherein the upper surface of the platform is provided with a fixed seat and a movable seat for clamping a sample, the movable seat comprises a movable plate, two sides of the lower surface of the movable plate are provided with sliding grooves, the upper surface of the platform is provided with a sliding rail matched with the sliding grooves, and the lower surface of the movable plate is provided with a transmission mechanism for driving the movable plate to slide on the platform;

the clamp for clamping the sample is fixedly arranged on the upper surface of the movable plate and comprises a mounting plate, a clamp plate is arranged above the mounting plate and fixedly connected with the mounting plate through a dismounting mechanism, a tension sensor is arranged between the clamp and the sample, one end of the tension sensor is clamped and fixed between the mounting plate and the clamp plate, the other end of the tension sensor is fixedly connected with the sample, and the tension sensor is connected with the control unit.

Preferably, the transmission mechanism comprises a motor, the motor is fixed on a side plate of the movable plate, an output shaft of the motor is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the movable plate, a gear is fixedly arranged on the rotating shaft, and a rack which is in meshing transmission with the gear is fixedly arranged on the upper surface of the platform.

Preferably, the motor is a servo motor, and the servo motor is connected with the control unit.

Preferably, the mounting panel is L type structure, and mounting panel and splint pass through screw fixed connection, and force sensor is close to the one end of splint and is provided with the screw hole that makes the screw pass, and force sensor passes through screw and mounting panel, splint fixed connection.

Preferably, the other end of the tension sensor is fixedly connected with one end of the sample through a bolt.

Preferably, the fixing seat comprises a fixing plate, a U-shaped notch is formed in the middle of the fixing plate, and a pressing plate for clamping the sample is arranged in the U-shaped notch.

Preferably, the pressing plate comprises a lower pressing plate fixed on the lower surface of the U-shaped notch and an upper pressing plate located above the lower pressing plate, a screw rod is connected to the upper surface of the upper pressing plate in a rotating mode, a threaded hole matched with the screw rod is formed in the upper surface of the fixing plate and communicated with the U-shaped notch, a rotating handle is arranged at the top end of the screw rod, and a jack screw for fixing the screw rod is arranged on the side face of the fixing plate.

Preferably, the lower surface of the upper pressure plate and the upper surface of the lower pressure plate are provided with anti-skid grains.

The utility model adopts the above structure ultrasonic stress test calibration device can solve the problem that can't carry out on-the-spot check to ultrasonic stress test device's precision, stability, has simple structure, convenient operation's advantage.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an ultrasonic stress test calibration apparatus of the present invention;

fig. 2 is a schematic view of a fixing seat structure of an embodiment of the ultrasonic stress test calibration apparatus of the present invention;

fig. 3 is the utility model relates to a sliding seat structure sketch map of ultrasonic stress test calibration apparatus embodiment.

Reference numerals

1. A platform; 2. a fixing plate; 3. an upper pressure plate; 4. a movable plate; 5. a slide rail; 6. a rack; 7. a motor; 8. mounting a plate; 9. a splint; 10. a tension sensor; 11. a sample; 12. carrying out top thread; 13. turning a handle; 14. a screw rod; 15. a lower pressing plate; 16. a rotating shaft; 17. a gear.

Detailed Description

Examples

Fig. 1 is the utility model relates to a structural schematic diagram of ultrasonic stress test calibration device embodiment, fig. 3 is the utility model relates to a sliding seat structural schematic diagram of ultrasonic stress test calibration device embodiment. An ultrasonic stress test calibration device comprises a working platform 1 and a control unit. The upper surface of the platform 1 is provided with a fixed seat and a movable seat for clamping the sample 11. The sliding seat comprises a movable plate 4, sliding grooves are formed in two sides of the lower surface of the movable plate 4 along the length direction of the movable plate, sliding rails 5 matched with the sliding grooves are arranged on the upper surface of the platform 1, and the sliding grooves and the sliding rails 5 provide guiding effects for the sliding of the movable plate 4 on the platform 1. The lower surface of the movable plate 4 is provided with a transmission mechanism for driving the movable plate 4 to slide on the platform 1. The transmission mechanism comprises a motor 7, the motor 7 selects a servo motor 7, and the servo motor 7 is connected with the control unit. The rotation of the servo motor 7 is controlled by the control unit, so that the continuous change and stable maintenance of the loading load are realized. The control mode of the control unit and the servo motor 7 is conventional prior art, and is not described herein again. The motor 7 is fixed on the side plate of the movable plate 4 through a bolt, an output shaft of the motor 7 is fixedly connected with a rotating shaft 16, and the rotating shaft 16 is rotatably connected with the movable plate 4 through a bearing. Two gears 17 are fixedly arranged on the rotating shaft 16, and a rack 6 which is meshed with the gears 17 for transmission is fixedly arranged on the upper surface of the platform 1. The rack 6 is arranged in parallel with the slide rail 5. Two gears 17 are arranged on the rotating shaft 16, so that the transmission stability is improved. The motor 7 drives the gear 17 to rotate through the rotating shaft 16, and the gear 17 is engaged with the rack 6, so as to drive the whole movable plate 4 to slide on the platform 1.

A clamp for clamping the sample 11 is fixedly arranged on the upper surface of the movable plate 4. The clamp comprises a mounting plate 8, and the mounting plate 8 is welded or bolted on the movable plate 4. The mounting panel 8 is L type structure, and the top of the horizontal plate of mounting panel 8 is provided with splint 9, and mounting panel 8 passes through screw fixed connection with splint 9. Be provided with tension sensor 10 between anchor clamps and the sample 11, tension sensor 10's one end centre gripping is fixed between mounting panel 8 and splint 9 to through screw fixed connection between tension sensor 10 and mounting panel 8 and splint 9, the fixed mode that adopts the screw makes things convenient for tension sensor 10's dismantlement. The other end of the tension sensor 10 is fixedly connected with one end of the sample 11 through a bolt, and the tension sensor 10 is connected with the control unit. The tension sensor 10 can output a loading load in real time, and the stress calculated by the tension sensor 10 is compared with the stress measured by the ultrasonic stress testing equipment, so that the on-site calibration and check of the ultrasonic stress testing equipment are realized. Each checking at least comprises 3 times of tensile loads with different sizes so as to improve the accuracy of the checking.

Fig. 2 is the utility model relates to a fixing base structure sketch map of ultrasonic stress test calibration apparatus embodiment. The fixing base comprises a fixing plate 2, and the fixing plate 2 is welded or fixed on the platform 1 through bolts. The middle part of the fixed plate 2 is provided with a U-shaped notch, and a pressing plate for clamping the sample 11 is arranged in the U-shaped notch. The pressing plate comprises a lower pressing plate 15 fixedly connected to the lower surface of the U-shaped notch through welding or bolts and an upper pressing plate 3 located above the lower pressing plate 15. The upper surface of the upper pressure plate 3 is rotatably connected with a screw rod 14, the upper surface of the fixing plate 2 is provided with a threaded hole matched with the screw rod 14, and the threaded hole is communicated with the U-shaped notch. The top end of the screw rod 14 is provided with a rotating handle 13, the screw rod 14 is rotated through the rotating handle 13, and the screw rod 14 is matched with a threaded hole in the upper surface of the fixing plate 2, so that the ascending and descending of the upper pressing plate 3 at the bottom end of the screw rod 14 are realized. The side of the fixed plate 2 is provided with a jackscrew 12 for fixing a screw rod 14, the jackscrew 12 is used for tightly jacking the screw rod 14, and the adjusted screw rod 14 is fixed to prevent looseness. The lower surface of the upper pressing plate 3 and the upper surface of the lower pressing plate 15 are provided with anti-slip lines, so that the friction force between the upper pressing plate 3, the lower pressing plate 15 and the sample 11 is improved, and the stability of clamping the sample 11 is improved.

Therefore, the utility model adopts the above structure ultrasonic stress test calibration device, can solve the problem that can't carry out on-the-spot check to ultrasonic stress testing arrangement's precision, stability, have simple structure, convenient operation's advantage.

The above are specific embodiments of the present invention, but the scope of protection of the present invention should not be limited thereto. Any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention are covered by the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the claims.

Claims

1. The utility model provides an ultrasonic wave stress test calibration device which characterized in that: the sample clamping device comprises a platform and a control unit, wherein a fixed seat and a movable seat for clamping a sample are arranged on the upper surface of the platform, the movable seat comprises a movable plate, sliding grooves are formed in two sides of the lower surface of the movable plate, a sliding rail matched with the sliding grooves is arranged on the upper surface of the platform, and a transmission mechanism for driving the movable plate to slide on the platform is arranged on the lower surface of the movable plate;

2. The ultrasonic stress test calibration device according to claim 1, wherein: the transmission mechanism comprises a motor, the motor is fixed on a side plate of the movable plate, an output shaft of the motor is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the movable plate, a gear is fixedly arranged on the rotating shaft, and a rack which is in meshing transmission with the gear is fixedly arranged on the upper surface of the platform.

3. The ultrasonic stress test calibration device according to claim 2, wherein: the motor is a servo motor, and the servo motor is connected with the control unit.

4. The ultrasonic stress test calibration device according to claim 1, wherein: the mounting panel is L type structure, and mounting panel and splint pass through screw fixed connection, and force sensor is close to the one end of splint and is provided with the screw hole that makes the screw pass, and force sensor passes through screw and mounting panel, splint fixed connection.

5. The ultrasonic stress test calibration device according to claim 1, wherein: and the other end of the tension sensor is fixedly connected with one end of the sample through a bolt.

6. The ultrasonic stress test calibration device according to claim 1, wherein: the fixing seat comprises a fixing plate, a U-shaped notch is formed in the middle of the fixing plate, and a pressing plate for clamping a sample is arranged in the U-shaped notch.

7. The ultrasonic stress test calibration device according to claim 6, wherein: the clamp plate is including fixing the holding down plate at U type breach lower surface and being located the top board of holding down plate top, rotates on the upper surface of holding down plate to be connected with the lead screw, is provided with the screw hole with lead screw looks adaptation on the upper surface of fixed plate, and screw hole and U type breach intercommunication, the top of lead screw are provided with changes the handle, and the side of fixed plate is provided with the jackscrew of fixed screw.

8. The ultrasonic stress test calibration device according to claim 7, wherein: and anti-skid grains are arranged on the lower surface of the upper pressure plate and the upper surface of the lower pressure plate.