CN212357336U - Ultrasonic impact gun for weld stress treatment - Google Patents

Abstract

The invention discloses an ultrasonic impact gun for weld stress treatment, which comprises a gun body, wherein the front end part of the gun body is provided with a low-voltage illumination light source, the low-voltage illumination light source is a light-emitting diode, a handle extends from the gun body, a shell is sleeved outside the handle and fixed on the gun body, the tail part of the handle is provided with a groove, a rotating shaft is arranged in the groove, a connecting sleeve is sleeved on the rotating shaft, and through holes are correspondingly formed in the connecting sleeve and the handle. The ultrasonic impact gun for the weld stress treatment is suitable for being used in dark places, and the connecting sleeve is arranged in the handle and can be connected with the external connecting rod through the connecting sleeve to impact a welding point in a long pipe, so that the ultrasonic impact gun for the weld stress treatment is wide in application range.

Description

Ultrasonic impact gun for weld stress treatment

Technical Field

The invention relates to an ultrasonic impact gun for weld stress treatment, and belongs to the field of welding.

Background

After the metal material is welded by adopting various welding methods, the welding seam is easy to generate larger welding residual stress, especially larger tensile stress on the surface of the welding seam, if the residual stress is eliminated or reduced by adopting a technical means, surface cracks and even fracture are easy to generate when the welding seam is in service, especially high-strength steel, high-carbon steel or a large thick plate, and cracks or fractures caused by the residual stress on the surface of the welding seam are easy to generate on the seam of a complex welding joint. The traditional method for eliminating the welding residual stress is to adopt stress relief annealing under the allowable condition, so that the residual stress of a welding seam can be eliminated to a great extent or completely, but in the actual production, not all welding structures can adopt the stress relief annealing method.

The ultrasonic welding stress relief equipment method is a relatively popular postweld treatment method abroad, and the basic principle of the ultrasonic welding stress relief equipment is that a high-power ultrasonic wave is utilized to push an impact tool to impact the surface of a metal object at a frequency of more than twenty thousand times per second, and the metal surface layer generates relatively large compression plastic deformation due to the high frequency, high efficiency and large energy under focusing of the ultrasonic wave; meanwhile, the original stress field is changed by ultrasonic welding stress relief equipment waves, and the compressive stress with a certain numerical value is generated; and the method can strengthen the impacted part, strengthen the surface locally and eliminate the residual stress. The method is firstly developed rapidly in the United states in the sixties of the twentieth century in the Ukrainian of the former Soviet Union, is acknowledged as the most effective method for improving the fatigue performance of a welded structure, and is rapidly popularized and applied in developed countries, an ultrasonic welding stress relief device is used as post-welding treatment equipment, and can simultaneously improve a plurality of factors influencing the quality of a welding seam, such as stress, defects, geometrical shape of a welding toe, surface strengthening and the like, so that the method has the effect of improving the fatigue performance of the welding joint with half effort, can improve the fatigue strength of the treated welding joint by 50-120 percent, and prolong the fatigue life by 5-100 times. After the ultrasonic welding stress relief device is adopted for treatment, the traditional grinding and deslagging procedures are omitted, the labor time is saved by 20%, the labor intensity is reduced, and the production efficiency is improved. Meanwhile, the method is also widely applied to the following three aspects: (1) strengthening treatment is carried out on the surface of the metal part so as to improve the surface quality and the fatigue life of the part; (2) the stress field is adjusted, the welding deformation is reduced, and the dimensional stability of the workpiece is ensured; (3) and (4) carrying out treatment for eliminating welding stress on the local welding repair part of the mechanical part. The method is widely used in foreign mechanical manufacturing engineering, in particular to welding structure engineering with higher requirement on fatigue performance and requirement on residual stress elimination.

Ultrasonic impact eliminates welding residual stress equipment generally comprises two parts, power and impact rifle, both are connected through the power cord, artifical handheld impact rifle during the use, strike the welding seam, because it is bigger to strike the rifle quality, and there is vibrations when strikeing, long-time during operation consumes workman's physical power very much, but it is narrow and small at some spatial position, the welding seam is irregular, the node that the structure is complicated is toward the biggest place of stress concentration that comes, these places only can be suitable for by manual ultrasonic impact rifle, still some welding points are located inside the pipeline, the distance is far away, consequently, need light-weighted manual ultrasonic impact rifle, in order to reduce intensity of labour, high efficiency.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an ultrasonic impact gun for weld stress treatment, which is suitable for being used in dark places.

The technical scheme is as follows: in order to solve the technical problem, the ultrasonic impact gun for weld stress treatment comprises a gun body, wherein a low-voltage illumination light source is arranged at the front end of the gun body and is a light-emitting diode, a handle extends from the gun body, a shell is sleeved outside the handle and is fixed on the gun body, a groove is formed in the tail of the handle, a rotating shaft is installed in the groove, a connecting sleeve is sleeved on the rotating shaft, and through holes are correspondingly formed in the connecting sleeve and the handle.

Preferably, the through holes are uniformly distributed along the central circumference of the rotating shaft.

Preferably, the end of the connecting sleeve is provided with a pair of connecting holes.

Preferably, a tail hole plate is fixed at the tail part of the gun body, an aviation plug is installed on the tail hole plate, an energy converter and an amplitude transformer are installed in the gun body, the end part of the amplitude transformer is located outside the gun body, the amplitude transformer is sequentially connected with the impact needle holder, the ER chuck and the impact needle, a temperature control speed regulation fan is further arranged in the gun body, a temperature sensor is installed in the temperature control speed regulation fan, and a switch is installed on a handle of the gun body.

Preferably, the gun body is made of a carbon fiber material as a whole.

Preferably, the handle is a shock absorbing handle.

Preferably, the handle is a hydraulic shock-absorbing handle.

Preferably, the gun body is provided with a plurality of heat dissipation holes at the position of the temperature control speed regulation fan.

Preferably, the amplitude transformer is sleeved with a fan cover.

Preferably, the striker pin holder is made of brass.

Has the advantages that: the ultrasonic impact gun for the weld stress treatment is suitable for being used in dark places, and the connecting sleeve is arranged in the handle and can be connected with the external connecting rod through the connecting sleeve to impact a welding point in a long pipe, so that the ultrasonic impact gun for the weld stress treatment is wide in application range.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the handle of the present invention.

Fig. 3 is a left side view of the structure of fig. 2.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 3, the ultrasonic impact gun for weld stress treatment of the present invention includes a gun body 4, a low-voltage illumination light source is arranged at the front end of the gun body 4, the low-voltage illumination light source is a light emitting diode, a handle extends from the gun body 4, a housing is sleeved outside the handle, the housing is fixed on the gun body 4, a groove is arranged at the tail of the handle, a rotating shaft 14 is installed in the groove, a connecting sleeve 13 is sleeved on the rotating shaft 14, and through holes 15 are correspondingly arranged on the connecting sleeve 13 and the handle.

In the present invention, the through holes 15 are uniformly distributed along the central circumference of the rotating shaft 14, and a pair of connecting holes 16 are formed at the end of the connecting sleeve 13.

In the invention, a tail orifice plate 2 is fixed at the tail part of a gun body 4, an aviation plug 1 is installed on the tail orifice plate 2, an energy converter 7 and an amplitude transformer 8 are installed in the gun body 4, the end part of the amplitude transformer 8 is positioned outside the gun body 4, the amplitude transformer 8 is sequentially connected with a striker 12 retainer 10, an ER chuck 11 and a striker 12, a temperature control speed regulation fan 3 is also arranged in the gun body 4, a temperature sensor is installed in the temperature control speed regulation fan 3, and a switch 5 is installed on a handle of the gun body 4. The gun body 4 is integrally made of carbon fiber materials. The handle is a shock-absorbing handle 6. The handle is a hydraulic damping handle 6. The gun body 4 is provided with a plurality of heat dissipation holes at the position of the temperature control speed regulation fan 3. The horn 8 is sleeved with a fan cover 9. The retainer 10 of the impact pin 12 is made of brass.

When the shock gun is used, when a welding point is in the pipe and needs to extend into the pipe, the connecting sleeve 13 is rotated to be connected with an external connecting rod, the shock gun extends into the pipe for use, and when the shock gun needs to work at different angles in the pipe, the shock gun can be used through the connecting sleeve 13, only the angle of the connecting sleeve relative to the rotating shaft needs to be set, so that the use of the shock gun in the pipe is greatly solved.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (10)

1. An ultrasonic impact gun for weld stress treatment is characterized in that: the multifunctional electric torch comprises a torch body, the front end of the torch body is provided with a low-voltage lighting source, the low-voltage lighting source is a light-emitting diode, the torch body extends to form a handle, a shell is sleeved outside the handle and fixed on the torch body, the tail of the handle is provided with a groove, a rotating shaft is installed in the groove, a connecting sleeve is sleeved on the rotating shaft, and through holes are correspondingly formed in the connecting sleeve and the handle.

2. The ultrasonic impact gun for weld stress treatment according to claim 1, characterized in that: the through holes are uniformly distributed along the central circumference of the rotating shaft.

3. The ultrasonic impact gun for weld stress treatment according to claim 1, characterized in that: the end of the connecting sleeve is provided with a pair of connecting holes.

4. The ultrasonic impact gun for weld stress treatment according to claim 1, characterized in that: the tail part of the gun body is fixedly provided with a tail hole plate, the tail hole plate is provided with an aviation plug, an energy converter and an amplitude transformer are arranged in the gun body, the end part of the amplitude transformer is positioned outside the gun body, the amplitude transformer is sequentially connected with an impact needle retainer, an ER chuck and an impact needle, a temperature control speed regulation fan is further arranged in the gun body, a temperature sensor is arranged in the temperature control speed regulation fan, and a switch is arranged on a handle of the gun body.

5. The ultrasonic impact gun for weld stress treatment according to claim 4, characterized in that: the gun body is integrally made of carbon fiber materials.

6. The ultrasonic impact gun for weld stress treatment according to claim 4, characterized in that: the handle is a shock absorption handle.

7. The ultrasonic impact gun for weld stress treatment according to claim 6, characterized in that: the handle is a hydraulic damping handle.

8. The ultrasonic impact gun for weld stress treatment according to claim 4, characterized in that: the gun body is provided with a plurality of heat dissipation holes at the position of the temperature control speed regulation fan.

9. The ultrasonic impact gun for weld stress treatment according to claim 4, characterized in that: and a fan cover is sleeved outside the amplitude transformer.

10. The ultrasonic impact gun for weld stress treatment according to claim 4, characterized in that: the impact pin retainer is made of brass.

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