CN210314414U - Welding bead residual stress relieving device - Google Patents
Welding bead residual stress relieving device Download PDFInfo
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- CN210314414U CN210314414U CN201921186582.1U CN201921186582U CN210314414U CN 210314414 U CN210314414 U CN 210314414U CN 201921186582 U CN201921186582 U CN 201921186582U CN 210314414 U CN210314414 U CN 210314414U
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- ultrasonic impact
- impact head
- mechanical arm
- hinged
- residual stress
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Abstract
The utility model discloses a welding bead residual stress eliminating device, which comprises a magnetic force seat, an mechanical arm and an ultrasonic impact head; the ultrasonic impact head is hinged to the first end of the mechanical arm, the second end of the mechanical arm is hinged to the magnetic seat, the axis of the ultrasonic impact head is perpendicular to the hinged shaft of the ultrasonic impact head and the hinged shaft of the mechanical arm, and the hinged shaft of the mechanical arm and the magnetic seat is parallel to the hinged shaft of the ultrasonic impact head and the hinged shaft of the mechanical arm. The utility model has the advantages that: the labor intensity is low, the impact pressure is stable, and the repairing effect is good.
Description
Technical Field
The utility model relates to a welding field, concretely relates to welding bead residual stress remove device.
Background
In the power industry, metal parts often crack and fail due to a severe service environment or self defects, and in order to save replacement cost and maintenance time, the metal parts are often repaired by adopting a welding method. Particularly, like some large steel castings, such as parts of cylinders, valves and the like, crack defects are easily generated in structure mutation areas such as corners or reducing surfaces, and due to the fact that the large steel castings are large in size and complex in structure, post-weld heat treatment cannot be performed, the repair is difficult to achieve by using a traditional welding repair method, repair of defective parts can be achieved by adopting a heterogeneous cold repair welding method, and in order to avoid excessive welding residual stress generated after welding, residual stress is eliminated layer by adopting a mode of hammering a welding bead by a pneumatic pick at present. However, the residual stress cannot be completely eliminated by adopting a mode of hammering a welding bead by an air pick to eliminate the residual stress, and certain potential safety hazard is brought to long-term operation of equipment. The better realization of ultrasonic impact mode ability is to residual stress's elimination to change residual tensile stress into profitable residual compressive stress, can effectively improve equipment's life, on being used for bearing fatigue load's the joint weld mostly, and mostly be handheld ultrasonic impact equipment and operate, operating strength is big, and can not keep invariable impact pressure, and the impact effect is general.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the problems of high labor intensity and unstable impact pressure of ultrasonic impact in the prior art are solved.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a welding bead residual stress eliminating device comprises a magnetic base, a mechanical arm and an ultrasonic impact head;
the ultrasonic impact head is hinged to the first end of the mechanical arm, the second end of the mechanical arm is hinged to the magnetic seat, the axis of the ultrasonic impact head is perpendicular to the hinged shaft of the ultrasonic impact head and the hinged shaft of the mechanical arm, and the hinged shaft of the mechanical arm and the magnetic seat is parallel to the hinged shaft of the ultrasonic impact head and the hinged shaft of the mechanical arm.
The utility model provides a welding bead residual stress remove device is when actual application, fix near waiting prosthetic work piece with the magnetic force seat, then the adjustment arm, the position of ultrasonic impact head, make the head of ultrasonic impact head aim at the welding bead surface of work piece, and make the ultrasonic impact head exert certain pressure to the welding bead, then with the arm, the ultrasonic impact head is fixed, make it keep this posture, open ultrasonic impact head, make it carry out residual stress to the welding bead and eliminate, for traditional operation, need not operator's bimanualness, labor intensity is less, and because the ultrasonic impact head presses when on the welding bead, the magnetic force seat, the arm, ultrasonic impact is relatively fixed between the head, therefore impact pressure is comparatively stable, repair effect is better.
Preferably, a handle is arranged on the magnetic base.
Optimized, the handle sets up two, is located the both sides of magnetic force seat respectively, and the setting of handle is convenient for the operator to remove the magnetic force seat, and during actual operation, the handle of magnetic force seat both sides is held to operator's both hands, is convenient for remove the magnetic force seat.
Preferably, the ultrasonic impact head device further comprises a hoop sleeved on the ultrasonic impact head, and the joint of the hoop is hinged to the first end of the mechanical arm.
Preferably, the clamp comprises two semicircular clamping sleeves, the ultrasonic impact head is clamped by the two clamping sleeves, the two clamping sleeves are connected through bolts and nuts, one joint of the two clamping sleeves is hinged to the first end of the mechanical arm through the bolts and nuts, and the second end of the mechanical arm is hinged to the magnetic base through the bolts and nuts.
The ultrasonic impact head is fixed through the clamp, the assembly and disassembly are convenient and quick, and the size of the hinged friction force of the mechanical arm, the ultrasonic impact head and the magnetic seat can be adjusted by adjusting the tightness of the bolt and the nut, so that the positions of the mechanical arm and the ultrasonic impact head can be flexibly adjusted, and the mechanical arm and the ultrasonic impact head can be fixed.
Optimized, be provided with on the outer face of cylinder of head is strikeed in a wretched state with clamp complex annular groove to the supersound, the clamp is installed in annular groove, and the setting in an annular groove can make the clamp can be more firm impact the head centre gripping with the supersound.
Preferably, one side of the clamp towards the head of the ultrasonic impact head is provided with a pressure detection unit, the pressure detection unit is located between the annular groove side wall and the clamp, and the pressure detection unit is connected to a peripheral pressure display device.
Preferably, the pressure detection unit is a pressure sensor.
The pressure sensor is arranged to detect the pressure applied to the weld bead by the head of the ultrasonic impact head, and the pressure is visually displayed through the peripheral pressure display equipment, so that the position of the ultrasonic impact head is adaptively adjusted to meet the repair requirement, the pressure is kept stable, and the repair effect is better.
The beneficial effects of the utility model reside in that:
1. the utility model provides a welding bead residual stress remove device is when actual application, fix near waiting prosthetic work piece with the magnetic force seat, then the adjustment arm, the position of ultrasonic impact head, make the head of ultrasonic impact head aim at the welding bead surface of work piece, and make the ultrasonic impact head exert certain pressure to the welding bead, then with the arm, the ultrasonic impact head is fixed, make it keep this posture, open ultrasonic impact head, make it carry out residual stress to the welding bead and eliminate, for traditional operation, need not operator's bimanualness, labor intensity is less, and because the ultrasonic impact head presses when on the welding bead, the magnetic force seat, the arm, ultrasonic impact is relatively fixed between the head, therefore impact pressure is comparatively stable, repair effect is better.
2. The arrangement of the handle is convenient for an operator to move the magnetic base, and during actual operation, the operator holds the handles on two sides of the magnetic base with two hands to move the magnetic base conveniently.
3. The ultrasonic impact head is fixed through the clamp, the assembly and disassembly are convenient and quick, and the size of the hinged friction force of the mechanical arm, the ultrasonic impact head and the magnetic seat can be adjusted by adjusting the tightness of the bolt and the nut, so that the positions of the mechanical arm and the ultrasonic impact head can be flexibly adjusted, and the mechanical arm and the ultrasonic impact head can be fixed.
4. The arrangement of the annular groove can enable the clamp to clamp the ultrasonic impact head more stably.
5. The pressure sensor is arranged to detect the pressure applied to the weld bead by the head of the ultrasonic impact head, and the pressure is visually displayed through the peripheral pressure display equipment, so that the position of the ultrasonic impact head is adaptively adjusted to meet the repair requirement, the pressure is kept stable, and the repair effect is better.
Drawings
Fig. 1 and 2 are schematic views of a weld bead residual stress relieving device in an embodiment of the present invention;
FIG. 3 is a front view of the magnetic base according to the embodiment of the present invention;
FIG. 4 is a top view of the magnetic base according to an embodiment of the present invention;
fig. 5 is a front view of the robot arm in an embodiment of the present invention;
fig. 6 is a top view of a robotic arm in an embodiment of the present invention;
fig. 7 is a bottom view of the clamp according to the embodiment of the present invention;
wherein, the magnetic base-1, the handle-11 and the mounting lug-12;
a mechanical arm-2 and a clamping part-21;
ultrasonic impact head-3 and annular groove-31;
a hoop-4 and a cutting sleeve-41;
a pressure detection unit-5.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, the weld bead residual stress relieving device comprises a magnetic base 1, a mechanical arm 2, an ultrasonic impact head 3, a clamp 4 and a pressure detection unit 5.
The ultrasonic impact head 3 is hinged to the first end of the mechanical arm 2, the second end of the mechanical arm 2 is hinged to the magnetic base 1, the axis of the ultrasonic impact head 3 is perpendicular to the hinged shafts of the ultrasonic impact head 3 and the mechanical arm 2, and the hinged shafts of the mechanical arm 2 and the magnetic base 1 are parallel to the hinged shafts of the ultrasonic impact head 3 and the mechanical arm 2.
In this embodiment, the magnetic base 1 is a switch type magnetic base, as shown in fig. 3 and 4, the magnetic base 1 is provided with two handles 11, the two handles 11 are respectively located on the front side and the rear side of the magnetic base 1, the magnetic base 1 is provided with an installation lug 12, and the installation lug 12 is provided with a through hole for a bolt to pass through.
As shown in fig. 5-6, the mechanical arm 2 is in a long strip shape, two ends of the mechanical arm 2 are provided with clamping portions 21 capable of being clamped at two sides of the mounting lug 12, through holes for bolts to pass through are formed in the clamping portions 21, the second end clamping portions 21 of the mechanical arm 2 are clamped on the mounting lug 12, and then the mechanical arm 2 and the magnetic base 1 are mounted together through bolts and nuts, so that the hinge connection between the mechanical arm 2 and the magnetic base 1 can be realized.
As shown in fig. 1, an annular groove 31 matched with the clamp 4 is arranged on the outer cylindrical surface of the ultrasonic impact head 3, the clamp 4 is installed in the annular groove 31, the clamp 4 is sleeved on the ultrasonic impact head 3, and the joint of the clamp 4 is hinged to the first end of the mechanical arm 2.
Specifically, as shown in fig. 7, the clamp 4 includes two semicircular clamping sleeves 41, the ultrasonic impact head 3 is clamped by the two clamping sleeves 41, the two clamping sleeves 41 are connected through bolts and nuts, one of the joints of the two clamping sleeves 41 is hinged to the first end of the mechanical arm 2 through a bolt and nut, the second end of the mechanical arm 2 is hinged to the magnetic base 1 through a bolt and nut, specifically: after the ultrasonic impact head 3 is clamped by the two clamping sleeves 41, the joints of the two clamping sleeves 41 are fixed by a pair of bolt and nuts, then the other joint of the two clamping sleeves 41 is inserted into the clamping part 21 at the first end of the mechanical arm 2, and the two clamping sleeves 41 are hinged and fixed at the first end of the mechanical arm 2 by a pair of bolt and nuts.
With reference to fig. 1 and 7, one side of the clamp 4 facing the head of the ultrasonic impact head 3 is provided with a pressure detection unit 5, the pressure detection unit 5 is located between the side wall of the annular groove 31 and the clamp 4, and the pressure detection unit 5 is connected to a pressure display device of an external device, the pressure display device is a prior art and is used for displaying the size of the pressure detected by the pressure detection unit 5, and the pressure detection unit 5 is a pressure sensor.
The utility model provides an operating procedure when welding bead residual stress relieving device in actual application:
A. firstly, the whole device is arranged near a workpiece 6 to be repaired, and the relative positions among the magnetic seat 1, the mechanical arm 2 and the ultrasonic impact head 3 are adjusted by screwing bolts and nuts at all hinged positions, so that the head of the ultrasonic impact head 3 is aligned to the part to be repaired of the workpiece 6, namely the position shown in figure 1;
B. opening the magnetic base 1 to be adsorbed near the workpiece 6;
C. adjusting the positions of the mechanical arm 2 and the ultrasonic impact head 3 to enable the mechanical arm 2 and the ultrasonic impact head 3 to rotate to positions far away from the repair part, and reserving an operation space for cold welding repair equipment, namely the position shown in fig. 2;
D. starting cold welding repair equipment, wherein the cold welding repair equipment in the embodiment is a cold welding machine, and performing welding repair on the part to be repaired of the workpiece 6;
E. after welding repair is finished, adjusting the positions of the mechanical arm 2 and the ultrasonic impact head 3 by screwing bolts and nuts at each hinged position, enabling the head of the ultrasonic impact head 3 to be aligned to the surface of a weld bead of a workpiece 6, enabling the ultrasonic impact head 3 to apply certain pressure to the weld bead, transmitting the acquired pressure value to pressure display equipment by a pressure detection unit 5, properly adjusting the pressure applied to the surface of the weld bead by the head of the ultrasonic impact head 3 by reading the pressure value displayed by the pressure display equipment until the pressure value reaches a value meeting the standard, and then fixing the mechanical arm 2 and the ultrasonic impact head 3 by screwing the bolts and nuts to keep the posture;
F. starting the ultrasonic impact head 3 to eliminate the residual stress of the welding channel;
G. and after the residual stress of the welding bead is eliminated, repeating the steps.
For traditional operation, need not operator's bimanualness, intensity of labour is less, and because when 3 heads of supersound impact head pressed on the welding bead, magnetic base 1, arm 2, supersound impact head 3 between be relatively fixed, consequently impact pressure is comparatively stable, and repairing effect is better.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A welding bead residual stress relieving device is characterized in that: comprises a magnetic base (1), a mechanical arm (2) and an ultrasonic impact head (3);
the ultrasonic impact head (3) is hinged to be installed at the first end of the mechanical arm (2), the second end of the mechanical arm (2) is hinged to be installed on the magnetic base (1), the axis of the ultrasonic impact head (3) is perpendicular to the hinged shaft of the ultrasonic impact head (3) and the hinged shaft of the mechanical arm (2), and the hinged shaft of the mechanical arm (2) and the magnetic base (1) is parallel to the hinged shaft of the ultrasonic impact head (3) and the hinged shaft of the mechanical arm (2).
2. The weld bead residual stress relief device according to claim 1, wherein: the magnetic base (1) is provided with a handle (11).
3. The bead residual stress relief device according to claim 2, wherein: the two handles (11) are respectively positioned at two sides of the magnetic base (1).
4. The weld bead residual stress relief device according to claim 1, wherein: the ultrasonic impact head device is characterized by further comprising a hoop (4) sleeved on the ultrasonic impact head (3), and the joint of the hoop (4) is hinged to the first end of the mechanical arm (2).
5. The weld bead residual stress relief device according to claim 4, wherein: the clamp (4) comprises two semicircular clamping sleeves (41), the ultrasonic impact head (3) is clamped by the two clamping sleeves (41), the two clamping sleeves (41) are connected through bolts and nuts, one joint of the two clamping sleeves (41) is hinged to the first end of the mechanical arm (2) through the bolts and nuts, and the second end of the mechanical arm (2) is hinged to the magnetic base (1) through the bolts and nuts.
6. The weld bead residual stress relief device according to claim 4, wherein: the ultrasonic impact head is characterized in that an annular groove (31) matched with the hoop (4) is formed in the outer cylindrical surface of the ultrasonic impact head (3), and the hoop (4) is installed in the annular groove (31).
7. The weld bead residual stress relief device according to claim 6, wherein: one side of clamp (4) towards ultrasonic impact head (3) head is provided with pressure detection unit (5), and pressure detection unit (5) are located between annular groove (31) lateral wall and clamp (4), and pressure detection unit (5) are connected to the pressure display device of peripheral hardware.
8. The weld bead residual stress relief device according to claim 7, wherein: the pressure detection unit (5) is a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186582.1U CN210314414U (en) | 2019-07-25 | 2019-07-25 | Welding bead residual stress relieving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186582.1U CN210314414U (en) | 2019-07-25 | 2019-07-25 | Welding bead residual stress relieving device |
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| Publication Number | Publication Date |
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| CN210314414U true CN210314414U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921186582.1U Active CN210314414U (en) | 2019-07-25 | 2019-07-25 | Welding bead residual stress relieving device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273063A (en) * | 2019-07-25 | 2019-09-24 | 大唐锅炉压力容器检验中心有限公司 | A kind of welding bead residual stress cancellation element and method |
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2019
- 2019-07-25 CN CN201921186582.1U patent/CN210314414U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273063A (en) * | 2019-07-25 | 2019-09-24 | 大唐锅炉压力容器检验中心有限公司 | A kind of welding bead residual stress cancellation element and method |
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