CN114559199A - Multidimensional Vibration Aging and Vibration Welding Vibration Exciter for Large Steel Structures - Google Patents

Abstract

The invention discloses a multidimensional vibration aging and vibration welding vibration exciter for a large steel structural member, which comprises an adjusting bracket, an installation base, a vibration absorber, a main bracket, a resetting device, a fixed bracket, a vibration exciting electromagnet and a floating type magnetic suction seat. The floating type magnetic suction seat is adsorbed on the surface of the steel structural member, a fixing clamp is not needed, the adaptability to the surface of the steel structural member is strong, and the installation and the disassembly are convenient; the high-frequency electromagnetic excitation is adopted, the excitation frequency is high, the excitation direction is adjustable, the excitation direction can be reasonably determined according to the welding seam and the residual stress distribution condition of the steel structural member, the working hours are shortened, the residual stress of the steel structural member can be effectively reduced or homogenized, the dynamic load deformation resistance is improved, the size precision is stabilized, and the energy consumption and the production cost are reduced; the vibration damper is arranged, so that the service life of the supporting structural member can be prolonged. The invention has the advantages of compact structure, high efficiency of vibration welding or vibration aging treatment, obvious effect, low cost, no limitation of fields, environments, procedures and workpiece shapes, and the like.

Description

Multidimensional Vibration Aging and Vibration Welding Vibration Exciter for Large Steel Structures

technical field

The invention belongs to the technical field of special robot equipment, and in particular relates to a high-frequency vibration exciter for multi-dimensional vibration aging treatment and vibration welding of large steel structural parts.

Background technique

In the process of casting, welding, forging and machining, the deformation of metal structural parts due to thermal expansion and contraction and mechanical force will generate residual stress inside the workpiece, resulting in the workpiece being in an unstable state and reducing the dimensional stability and mechanical properties of the workpiece. Physical properties that cause the workpiece to deform and fail due to the release of residual stress during the use of the finished product. In particular, large-scale steel structures such as ships, bridges, and heavy machinery and equipment will inevitably have residual stress after welding, and residual stress is an important cause of their deformation or cracking. Therefore, these workpieces must be subjected to an aging treatment to relieve residual stress. Aging has three basic process technologies: natural aging, thermal aging and vibration aging, and vibration aging is an aging technology that uses vibration aging equipment to perform sub-resonance vibration on the workpiece and eliminate residual stress. Due to the long aging period, natural aging cannot meet the production schedule requirements; thermal aging equipment has large investment, high aging cost, low production efficiency, difficult application, and is not suitable for large and super-large equipment or parts; vibration aging equipment Less investment, high production efficiency, low cost of aging, is an ideal treatment method. Vibration aging has a very good effect on reducing or homogenizing the residual stress of metal structural parts, improving the resistance to dynamic load deformation, stabilizing dimensional accuracy and preventing cracks, and has no phenomena such as oxidation and decarburization. It is the only aging treatment method for composite structural parts of various materials, and is not limited by the site, environment, process and workpiece shape.

Vibration aging is carried out at room temperature after the components are welded. Therefore, in order to make the sum of dynamic stress and residual stress greater than the yield limit of the material at room temperature, it must have a large exciting force. Vibration welding is to give a slight vibration to the welded component during the whole process of welding, including the cooling process, so that the weld adjusts the strain in the hot state and changes the thermal stress field, so as to reduce and homogenize the stress. Vibration welding can greatly improve the fatigue life of welded structural parts, and the improvement rate is more than 70%; it can reduce the transverse residual stress of welded parts by about 25%. Vibration welding has been proved to be an effective method to improve the fatigue life of welded parts.

Vibration welding and vibration aging are technical processes taken in two stages to improve weld quality. Vibration welding is a vibration treatment process carried out during the welding process, while vibration aging is an aging treatment process carried out after the structural parts are welded and formed. The function of the former is to refine the grains and improve the mechanical properties of the material. Reduce welding stress and deformation, reduce pores and impurities, and make the welding texture finer to improve the macro welding quality. The latter is designed to reduce and homogenize welding stresses, eliminating the effects of residual stresses on deformation, cracking and fatigue life. In terms of stress relief, vibration welding plays a certain role, but its vibration is small and the dynamic stress generated is not large, so the effect of eliminating principal stress is not as good as vibration aging. Therefore, the best process specification for large steel components is generally to use vibration welding and vibration aging at the same time: that is, vibration welding is used in the welding process in the first stage, and vibration aging treatment is used in the second stage. In terms of excitation frequency, vibration aging generally adopts resonance or sub-resonance mode. Vibration welding can use both resonance and non-resonance, and practice has proved that high-frequency micro-vibration can greatly improve the mechanical properties of welded joints, and the fatigue performance life of welded joints has also been significantly improved. Therefore, the vibration exciter that can perform vibration welding and vibration aging treatment successively on large steel structural parts has a large frequency range, and has both high-frequency excitation and low-frequency excitation functions.

However, the existing vibration exciters are mainly single-degree-of-freedom inertial vibration exciters, which not only have a low excitation frequency, but also are mainly fixed to the steel structure by clamps. This is not only inconvenient to install and use for some large structural parts without external clamping structures, but also the excitation direction cannot be adjusted, and the effects of vibration aging and vibration welding are affected. There is an urgent need to develop a vibration exciter whose excitation direction is determinable and controllable, and which can be easily fixed on a large steel structure, so as to solve the deficiencies of the prior art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-dimensional vibration aging and vibration welding vibration exciter for large-scale steel structure parts, which is convenient for fixed installation and a high-frequency vibration exciter whose excitation direction is determined and controllable, and improves the performance of welded joints. , to improve the effect of residual stress elimination and processing efficiency.

The technical problem to be solved by the present invention is realized by the following technical solutions.

A multi-dimensional vibration aging and vibration welding vibration exciter for a large-scale steel structure includes an adjustment bracket, a mounting base, a shock absorber, a main bracket, a reset device, a fixed bracket, an excitation electromagnet and a floating magnetic suction seat. Wherein, the adjusting bracket includes a support arm, a side arm and an attitude adjustment cylinder, which are used to support and fix the installation base, and adjust the attitude of the installation base, the excitation electromagnet and the floating magnetic suction base. The front end of the support arm is connected with the mounting base through a hinge, the rear end of the side arm is fixedly connected with the front end of the support arm by welding, and the rear end of the attitude adjustment cylinder and the upper end of the side arm pass through. The front end of the attitude adjustment cylinder and the outer side of the installation base are connected by hinges, which are used to provide power for the attitude adjustment of the installation base, the excitation electromagnet and the floating magnetic suction base. The mounting base is connected with the main support through a shock absorber, and is used to support and install the shock absorber and the main support; the shock absorber is located between the mounting base and the main support, and is used for reducing or isolating vibration excitation electromagnetic The vibration generated by the iron prevents the main bracket from transmitting the vibration to the installation base and the adjustment bracket; the front end of the reset device is fixed and installed on the fixed bracket by screws, and the rear end of the reset device is sleeved on the outer end of the main bracket, It is used to restore the main support to its original position after the vibration excitation of the excitation electromagnet disappears, and to realize the reciprocating vibration excitation of large steel structural parts in linkage with the excitation electromagnet; The welding method is fixedly installed in the middle part of the main support, and the front end of the exciting electromagnet is placed in the fixed support to provide power for the reciprocating excitation of the present invention; two floating magnetic suction seats are symmetrically arranged on the fixed support. The two sides of the front end are used to fix the present invention on the large steel structure to be processed, so as to realize the rigid connection between the fixed bracket and the large steel structure to be processed. The rear end of the floating magnetic base passes through the fixed bracket. The method is fixed by screws or welding; a vibration sensor is also provided on the front side of the fixed bracket, and the vibration sensor is connected with the fixed bracket through screws, and is used to directly or indirectly measure the working time of the exciting electromagnet The resulting technical parameters such as displacement, velocity, acceleration and frequency. The vibration sensor adopts a three-axis acceleration sensor. An electromagnet installation hole is arranged in the middle part of the fixing bracket, and flange-like reinforcing ribs are arranged around the outer side of the front end of the electromagnet installation hole, and the left and right ends of the fixing bracket are arranged with Four sets of symmetrically arranged reset device mounting holes are also provided at the front and rear ends of the fixing bracket for the mounting holes of the magnetic suction base, and the number of reset device mounting holes in each set is 3-4.

Four symmetrically arranged suspension plates are arranged on the outer end of the mounting base to support the shock absorber; two dimples are arranged on the rear side of the suspension plate, which are connected with the adjusting screws on the shock absorber. The compression amount of the shock-absorbing spring in the shock absorber can be adjusted in coordination; the outer end of the suspension pressure plate is installed at the rear end of the shock absorber. An adjustment support is arranged between the two suspension plates at the upper end, and an adjustment ear seat is arranged at the rear end of the adjustment support; the adjustment ear seat and the front end of the posture adjustment cylinder are connected by a hinge . There is also a support seat in the middle part of the rear side of the installation base, the front end of the support seat is fixed on the installation base by screws, and the support seat is connected with the front end of the support arm in the adjustment bracket through a hinge.

An electromagnet fixing frame is arranged at the front end of the main support, the electromagnet fixing frame and the main support are fixedly connected by welding, and the rear end of the exciting electromagnet is fixed and installed on the main frame by screws. In the electromagnet fixing frame of the main bracket; a process hole is arranged in the middle of the main bracket, and four symmetrically arranged suspension supports are arranged at the outer end of the main bracket for fixing and installing the reset device, and Guide holes are provided on the four suspension supports.

The shock absorber includes a shock absorbing shell, a shock absorbing spring and an adjusting screw. Wherein, the front end of the vibration damping shell is fixedly installed on the rear side of the suspension support of the main bracket by screws, and the rear end of the vibration damping shell is sleeved on the suspension plate of the installation base; There is a connecting flange for fixing the vibration damping shell on the main bracket; two threaded holes are arranged at the rear end of the vibration damping shell for installing adjustment screws; There are rectangular guide grooves on both outer sides for installing and adjusting the suspension plate. The shock-absorbing spring is placed inside the shock-absorbing shell, and the rear end of the shock-absorbing spring is kept in contact with the front end surface of the outer end of the suspension plate. The rear end of the adjusting screw is connected with the rear end of the vibration damping shell through threads, and the front end of the adjusting screw is kept in contact with the dimple at the rear end of the suspension plate, which is used to adjust the vibration of the vibration damping spring in the vibration damping shell. The amount of compression; the shock-absorbing spring is a cylindrical coil spring.

The reset device includes a guide rod, a guide sleeve and a reset spring. The rear end of the guide rod is placed in the guide hole of the suspension support, the front end of the guide rod is placed in the guide sleeve, and the front end of the guide sleeve is fixed and installed on the rear side of the fixed bracket by screws Above, the return spring is located between the fixed bracket and the main bracket, and is sleeved on the guide rod and the guide sleeve to provide power for the reset of the main bracket; the return spring is a cylindrical coil spring or a conical coil spring.

The floating magnetic suction seat includes a suction support and an electromagnetic suction cup. Wherein, the rear end of the adsorption support and the outer end of the fixing bracket are fixedly connected by means of screws or welding, and the rear end of the electromagnetic suction cup is connected with the adsorption support by a ball hinge, and the electromagnetic suction cup can be The relative adsorption support realizes three-dimensional rotation in space, and has three degrees of freedom of movement. There are three electromagnetic suction cups in the floating magnetic suction seat, and in the initial state, the outer contours of the three electromagnetic suction cups form a concentric circle; the spherical centers of the three ball hinges in the floating magnetic suction seat form an equal side triangle. The purpose of this design is to improve the adaptability of the surface of the large-scale steel structure to be treated by the floating magnetic mount, and it can be effectively adsorbed and fixed whether it is a plane or a curved surface.

Before use, according to the needs of the vibration aging treatment process, select a suitable fixed area of the steel structure to be treated for installation, and only need to contact the electromagnetic suction cup in the floating magnetic suction seat of the present invention with the surface of the steel structure. The invention can be firmly fixed to the steel structure without any clamps. Then, the excitation electromagnet is activated, and the steel structure to be treated can be subjected to vibration welding or vibration aging treatment. After the vibration welding or vibration aging treatment is completed, the power supply of the electromagnetic chuck can be disconnected, and the present invention can be removed. In order to improve the vibration isolation effect, a damper can also be added between the installation base and the main bracket.

The beneficial effect of the present invention is that the present invention proposes a vibrator specially designed for multi-dimensional vibration aging and vibration welding for large-scale steel structural parts, which can effectively reduce or homogenize the residual stress of the steel structural parts and improve the resistance to dynamic load deformation. Stabilize dimensional accuracy and prevent cracks; the unique floating magnetic base has strong adaptability to the surface of steel structural parts, and is easy to install and disassemble, without fixing fixtures or temporary welding auxiliary clamping structural parts, which can avoid processing steel structural parts Cause damage; high-frequency electromagnetic excitation is used, the excitation frequency is high, and the excitation direction can be adjusted. Reduce energy consumption and production costs. The invention has the advantages of compact structure, high vibration aging treatment efficiency, remarkable effect and low cost, and is provided with a vibration damping device, which can prolong the service life of the support structure, and has the advantages of not being restricted by the site, environment, process and workpiece shape, etc., and can overcome the Defects of the prior art.

Description of drawings

1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the assembly relationship between the excitation electromagnet, the floating magnetic base and the fixed bracket of the present invention;

3 is a schematic structural diagram of a mounting base of the present invention;

4 is a schematic diagram of the assembly relationship between the shock absorber and the reset device of the present invention;

Fig. 5 is the structural schematic diagram of the damping shell in the damper of the present invention;

Fig. 6 is the structural representation of the main support of the present invention;

7 is a schematic structural diagram of a fixing bracket of the present invention;

8 is a schematic structural diagram of the floating magnetic seat of the present invention;

FIG. 9 is a schematic diagram of the assembly relationship among the main support, the reset device, the fixing support and the excitation electromagnet of the present invention.

Detailed ways

In order to make the technical means, creative features, achievement goals and effects realized by the present invention easy to understand and understand, the present invention will be further described below with reference to specific embodiments and illustrations.

As shown in Fig. 1, Fig. 2, Fig. 4, Fig. 7 and Fig. 9, a multi-dimensional vibration aging and vibration welding vibration exciter for large-scale steel structure parts, including an adjusting bracket 1, a mounting base 2, a shock absorber 3, a main bracket 4. Resetting device 5 , fixing bracket 6 , exciting electromagnet 7 and floating magnetic base 8 . The adjusting bracket 1 includes a support arm 11 , a side arm 12 and an attitude adjustment cylinder 13 , which are used to support and fix the mounting base 2 and adjust the distance between the mounting base 2 , the excitation electromagnet 7 and the floating magnetic base 8 . attitude. The front end of the support arm 11 is connected with the mounting base 2 through hinges, the rear end of the side arm 12 is fixedly connected with the front end of the support arm 11 by welding, and the rear end of the posture adjustment cylinder 13 is connected to the front end of the support arm 11. The upper end of the side arm 12 is connected by a hinge, and the front end of the attitude adjustment cylinder 13 is connected with the outer end of the mounting base 2 by a hinge, which is used for the attitude adjustment of the mounting base 2 , the excitation electromagnet 7 and the floating magnetic base 8 Provide power. The mounting base 2 is connected with the main support 4 through the shock absorber 3 for supporting and installing the shock absorber 3 and the main support 4; the shock absorber 3 is located between the mounting base 2 and the main support 4, It is used to reduce or isolate the vibration generated by the exciting electromagnet 7, and prevent the main support 4 from transmitting the vibration to the mounting base 2 and the adjusting support 1; the front end of the reset device 5 is fixedly installed on the fixed support 6 by screws, and the The rear end of the reset device 5 is sleeved on the outer end of the main support 4, and is used to restore the main support 4 to its original position after the vibration excitation of the exciting electromagnet 7 disappears, and is linked with the exciting electromagnet 7 to realize the large steel structure. The reciprocating excitation of the parts; the rear end of the excitation electromagnet 7 is fixedly installed in the middle part of the main bracket 4 by screws, and the front end of the excitation electromagnet 7 is placed in the fixed bracket 6, which is the invention of the present invention. Reciprocating excitation provides power; two floating magnetic suction bases 8 are symmetrically arranged on both sides of the front end of the fixed bracket 6 for fixing the present invention on the large steel structure to be processed, so as to realize the fixed bracket 6 and the large steel structure to be processed. For the rigid connection of the steel structure, the rear end of the floating magnetic base 8 is fixedly connected with the fixed bracket 6 by means of screws or welding; the front side of the fixed bracket 6 is also provided with a vibration sensor 9, And the vibration sensor 9 is connected with the fixing bracket 6 through screws, and is used to directly or indirectly measure the technical parameters such as displacement, speed, acceleration and frequency generated when the exciting electromagnet 7 works. The vibration sensor 9 uses a three-axis acceleration sensor. An electromagnet mounting hole 61 is provided in the middle part of the fixing bracket 6 , and a flange-like reinforcing rib 611 is arranged around the outer side surface of the front end of the electromagnet mounting hole 61 . The left and right ends are provided with magnetic suction seat mounting holes 62, and four sets of symmetrically arranged reset device mounting holes 63 are also provided at the front and rear ends of the fixing bracket 6, and the number of reset device mounting holes 63 in each group is 3- 4.

As shown in FIG. 1 and FIG. 3 , four symmetrically arranged suspension plates 21 are arranged on the outer end of the mounting base 2 to support the shock absorber 3 ; the rear side of the suspension plate 21 is provided with The two dimples 211 cooperate with the adjustment screws 33 on the shock absorber 3 to adjust the compression amount of the shock absorber spring 32 in the shock absorber 3; the outer end of the suspension plate 21 is installed at the rear end of the shock absorber 3 . An adjustment support 22 is arranged between the two suspension plates 21 at the upper end, and an adjustment ear seat 23 is arranged at the rear end of the adjustment support 22; the adjustment ear seat 23 and the attitude adjustment cylinder 13 The front ends are connected by hinges. A support base 24 is also provided at the middle part of the rear side of the mounting base 2 , the front end of the support base 24 is fixedly mounted on the mounting base 2 by screws, and the support base 24 is connected to the support arm 11 in the adjusting bracket 1 . The front ends are connected by hinges.

As shown in FIG. 1 , FIG. 2 , FIG. 6 and FIG. 9 , an electromagnet fixing frame 41 is provided at the front end of the main support 4 , and the electromagnet fixing frame 41 and the main support 4 are welded by a method of welding. The rear end of the exciting electromagnet 7 is fixedly installed in the electromagnet fixing frame 41 of the main bracket 4 by screws; a process hole 42 is provided in the middle of the main bracket 4, and the The outer end of the main bracket 4 is provided with four symmetrically arranged overhanging supports 43 for fixing and installing the reset device 5 , and guide holes 44 are provided on each of the four overhanging supports 43 .

As shown in FIGS. 1 , 4 and 5 , the shock absorber 3 includes a shock absorbing shell 31 , a shock absorbing spring 32 and an adjusting screw 33 . Wherein, the front end of the vibration damping shell 31 is fixedly installed on the rear side of the suspension support 43 of the main bracket 4 by screws, and the rear end of the vibration damping shell 31 is sleeved on the suspension plate 21 of the mounting base 2; The front end of the vibration damping shell 31 is provided with a connecting flange 311 for fixing the vibration damping shell 31 on the main support 4; the rear end of the vibration damping shell 31 is provided with two threaded holes 312 for Install the adjusting screw 33 ; rectangular guide grooves 313 are provided on both outer sides of the vibration damping shell 31 for installing and adjusting the suspension plate 21 . The damping spring 32 is placed inside the damping shell 31 , and the rear end of the damping spring 32 keeps in contact with the front end surface of the outer end of the suspension plate 21 . The rear end of the adjusting screw 33 is connected with the rear end of the vibration damping shell 31 through threads, and the front end of the adjusting screw 33 is kept in contact with the recess 211 at the rear end of the suspension plate 21 for adjusting the vibration damping spring 32 The amount of compression in the damping shell 31; the damping spring 32 is a cylindrical coil spring.

As shown in FIGS. 1 , 2 , 4 , 6 and 9 , the restoring device 5 includes a guide rod 51 , a guide sleeve 52 and a restoring spring 53 . The rear end of the guide rod 51 is placed in the guide hole 44 of the suspension support 43, the front end of the guide rod 51 is placed in the guide sleeve 52, and the front end of the guide sleeve 52 is fixed and installed by screws On the rear side of the fixed bracket 6, the return spring 53 is located between the fixed bracket 6 and the main bracket 4, and is sleeved on the guide rod 51 and the guide sleeve 52 to provide power for the reset of the main bracket 4; the described The return spring 53 is a cylindrical coil spring or a conical coil spring.

As shown in FIG. 1 , FIG. 2 and FIG. 8 , the floating magnetic suction base 8 includes a suction support 81 and an electromagnetic suction cup 82 . Wherein, the rear end of the adsorption support 81 is fixedly connected with the outer end of the fixing bracket 6 by means of screws or welding, and the rear end of the electromagnetic suction cup 82 is connected with the adsorption support 81 by a ball hinge. The electromagnetic chuck 82 can realize three-dimensional rotation in space relative to the adsorption support 81, and has three degrees of freedom of movement. There are three electromagnetic suction cups 82 in the floating magnetic suction seat 8, and the outer contours of the three electromagnetic suction cups 82 form a concentric circle in the initial state; the three ball hinge balls in the floating magnetic suction seat 8 The heart forms an equilateral triangle. The purpose of this design is to improve the adaptability of the surface of the large-scale steel structure to be processed by the floating magnetic base 8, whether it is a plane or a curved surface, it can be effectively adsorbed and fixed.

Before use, select a suitable fixed area of the steel structure to be treated for installation according to the needs of vibration welding or vibration aging treatment process, and only need to contact the electromagnetic suction cup 82 in the floating magnetic suction seat 8 of the present invention with the surface of the steel structure, and energize it. The rear electromagnetic chuck 82 can firmly fix the present invention on the steel structure without any clamps. Then, the excitation electromagnet 7 is activated, and the steel structure to be treated can be subjected to vibration welding or multi-dimensional vibration aging treatment. After the vibration welding or vibration aging treatment is completed, the power supply of the electromagnetic chuck 82 is disconnected, and the present invention can be removed.

In order to improve the vibration isolation effect, a damper can also be added between the installation base 2 and the main bracket 4 . The invention is particularly suitable for vibration welding and multi-dimensional vibration aging treatment of large and super-large steel structure parts or equipment, has strong adaptability to the surface of steel structure parts, is convenient for fixed installation and disassembly, does not need additional welding and fixed installation, and avoids the need for additional welding and installation. damage to the device.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc. indicate the orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore It should not be construed as a limitation of the present invention.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A multi-dimensional vibration aging and vibration welding vibration exciter for large-scale steel structures, including an adjustment bracket, a mounting base, a shock absorber, a main bracket, a reset device, a fixed bracket, an excitation electromagnet and a floating magnetic suction seat, which is It is characterized in that: the adjustment bracket includes a support arm, a side arm and a posture adjusting cylinder, the front end of the support arm and the mounting base are connected by a hinge, and the rear end of the side arm is welded with the support arm. The front end is fixedly connected, the rear end of the attitude adjustment cylinder is connected with the upper end of the side arm through a hinge, and the front end of the attitude adjustment cylinder is connected with the outer end of the installation base through a hinge; the installation base is connected to the main body through a shock absorber The brackets are connected, the front end of the reset device is fixed and installed on the fixed bracket by screws, the rear end of the reset device is sleeved on the outer end of the main bracket; the rear end of the excitation electromagnet is fixed and installed by screws In the middle part of the main bracket, the front end of the exciting electromagnet is placed in the fixed bracket; the two floating magnetic seats are symmetrically arranged on both sides of the front end of the fixed bracket, and the rear of the floating magnetic seat is placed in the fixed bracket. The end and the fixing bracket are fixedly connected by means of screws or welding; a vibration sensor is also provided on the front side of the fixing bracket, and the vibration sensor is connected with the fixing bracket through screws; Four symmetrically arranged suspension plates are arranged on the outer end of the mounting base, and two dimples are arranged on the rear side of the suspension plate, and the outer end of the suspension plate is installed on the shock absorber. The rear end; an adjustment support is arranged between the two suspension plates at the upper end, and an adjustment ear seat is arranged at the rear end of the adjustment support, and the adjustment ear seat and the front end of the attitude adjustment cylinder pass through The hinges are connected; a support seat is also provided at the middle part of the rear side of the installation base, the front end of the support seat is fixed and installed on the installation base by screws, and the support seat and the front end of the support arm in the adjustment bracket pass through connected by hinges; An electromagnet fixing frame is arranged at the front end of the main support, the electromagnet fixing frame and the main support are fixedly connected by welding, and the rear end of the exciting electromagnet is fixed and installed on the main frame by screws. In the electromagnet fixing frame of the main bracket; a process hole is arranged in the middle of the main bracket, and four symmetrically arranged suspension supports are arranged at the outer end of the main bracket, and on the four suspension supports All have guide holes; The shock absorber includes a shock absorbing shell, a shock absorbing spring and an adjusting screw, the front end of the shock absorbing shell is fixedly installed on the rear side of the suspension support of the main bracket by screws, and the rear end of the shock absorbing shell is sleeved on the rear side of the suspension support of the main bracket. The suspension plate of the base is installed; the shock-absorbing spring is placed inside the shock-absorbing shell, and the rear end of the shock-absorbing spring is kept in contact with the front surface of the outer end of the suspension plate; the rear end of the adjusting screw is in contact with the shock-absorbing shell The rear end of the screw is connected by a thread, and the front end of the adjusting screw is kept in contact with the dimple at the rear end of the suspension plate; The reset device includes a guide rod, a guide sleeve and a reset spring. The rear end of the guide rod is placed in the guide hole of the suspension support, and the front end of the guide rod is placed in the guide sleeve. The front end of the sleeve is fixed and installed on the rear side of the fixed bracket by screws, and the return spring is located between the fixed bracket and the main bracket, and is sleeved on the guide rod and the guide sleeve; An electromagnet installation hole is arranged in the middle part of the fixing bracket, and flange-like reinforcing ribs are arranged around the outer side of the front end of the electromagnet installation hole; the left and right ends of the fixing bracket are provided with For the mounting holes of the magnetic suction base, four sets of symmetrically arranged reset device mounting holes are also provided at the front and rear ends of the fixing bracket, and the number of reset device mounting holes in each set is 3-4; The floating magnetic suction seat includes a suction support and an electromagnetic suction cup, the rear end of the suction support is fixedly connected with the outer end of the fixed bracket, and the rear end of the electromagnetic suction cup is connected with the suction support through a ball hinge. connect. 2 . The multi-dimensional vibration aging and vibration welding vibration exciter of a large-scale steel structure according to claim 1 , wherein the vibration sensor adopts a three-axis acceleration sensor. 3 . 3. The multi-dimensional vibration aging and vibration welding vibration exciter of a large-scale steel structure according to claim 1 is characterized in that: the vibration damping spring is a cylindrical coil spring, and the return spring is a cylindrical coil spring or a cylindrical coil spring. Conical coil spring. 4. The multi-dimensional vibration aging and vibration welding vibration exciter of a large-scale steel structure according to claim 1, characterized in that: there are three electromagnetic suction cups in the floating magnetic suction seat, and in the initial state three electromagnetic suction cups The outer contour of the electromagnetic suction cup forms a concentric circle; the ball centers of the three ball hinges in the floating magnetic suction seat form an equilateral triangle.

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