A three-axis tilting device for a mechanical electric vibration table

Abstract

The present invention discloses a three-axis tilting device for a mechanical electric vibration table, which comprises a chassis fixing device. The chassis fixing device is connected with a vibration table surface device through a hydraulic lifting device. A vibration table surface for fixing a workpiece to be measured and capable of moving in three directions of X-axis, Y-axis and Z-axis is arranged on the vibration table surface device. A linear guide rail I corresponding to the vibration table surface is arranged on the chassis fixing device. A rotatable direction rotating device is installed on the chassis fixing device. A linear guide rail II capable of splicing with the linear guide rail I in the X-axis direction and the Y-axis direction to form a guide rail is arranged on the direction rotating device. A vibration generating device capable of sliding along the linear guide rail I and the linear guide rail II and capable of exciting the vibration table surface in three directions of X-axis, Y-axis and Z-axis is installed on the linear guide rail I. The structure of the present invention is simple, and a single exciter can be used to realize the vibration test of the workpiece to be measured in multiple directions and with multiple degrees of freedom.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration tables, and particularly relates to a three-axis tilting device for a mechanical electric vibration table. Background Art

[0002] Since vibration tables can simulate the vibration environment of test specimens, they are widely used in fields such as aerospace, vehicle engineering, and seismic testing to evaluate and assess the mechanical properties of test specimens under corresponding vibration conditions. A single-axis vibration table can achieve single-direction and single-degree-of-freedom vibration. However, real-world vibrations occur in the X, Y, and Z coordinate systems. At this time, if a single-axis vibration table is used to meet the experimental requirements, the workpiece needs to be adjusted, but adjusting the workpiece will affect the vibration performance. Currently, the solution in the market to this problem is to simultaneously use multiple single-axis vibration tables to form a multi-degree-of-freedom vibration table to more realistically simulate the actual vibration environment. Currently, in a typical multi-degree-of-freedom vibration table, as the number of degrees of freedom increases, the number of exciters also increases, and the increase in the number of exciters used increases the equipment cost. Therefore, there is an urgent need to design a device that uses fewer exciters and can solve the problem of multi-direction and multi-degree-of-freedom testing of the workpiece under test by a single-axis vibration table. Summary of the Invention

[0003] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a three-axis tilting device for a mechanical electric vibration table.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a three-axis tilting device for a mechanical electric vibration table, including a chassis fixing device. The chassis fixing device is connected to a vibration table surface device through a hydraulic lifting device. The vibration table surface device is provided with a vibration table surface for fixing the workpiece under test and capable of moving in three directions of the X-axis, Y-axis, and Z-axis. The chassis fixing device is provided with a linear guide rail I arranged in the X-axis and Y-axis directions corresponding to the vibration table surface. At a position corresponding to the lower part of the vibration table surface device on the chassis fixing device, a rotatable direction rotating device is installed. The direction rotating device is provided with a linear guide rail II that can be spliced with the linear guide rail I in the X-axis and Y-axis directions to form a guide rail. A vibration generating device that can slide along the linear guide rail I and the linear guide rail II and can excite the vibration table surface in three directions of the X-axis, Y-axis, and Z-axis is installed on the linear guide rail I.

[0006] Preferably, the chassis fixing device includes a workbench, a fixed support I, a fixed support II, and a linear guide I. A circular groove for installing a direction rotation device is provided on the upper surface of the workbench. The linear guide I is arranged in pairs along the X-axis and Y-axis on the workbench, and the symmetry line of each pair of linear guides I passes through the center of the circular groove. The fixed support I is arranged in pairs on both sides of the linear guide I. The fixed support II is arranged in pairs outside the circular groove and is parallel to the fixed support I arranged along the X-axis. Threaded holes corresponding to the vibration generating device are provided on both the fixed support I and the fixed support II.

[0007] Preferably, the workbench is provided in a hollow shape, and a cross-grid reinforcing plate is welded inside the workbench.

[0008] Preferably, the direction rotation device includes a slewing bearing outer ring, a linear guide II, a rotary connection block, a disc, and a slewing bearing inner ring. The slewing bearing outer ring is fixed to the lower surface of the workbench. The slewing bearing inner ring is fixedly connected to the disc. The disc corresponds to and fits into the circular groove on the upper surface of the workbench. The upper surface of the installed disc is flush with the upper surface of the workbench. The linear guide II is laid in pairs on the disc. The symmetry line of the paired linear guides II passes through the center of the disc, and the distance between the paired linear guides II is the same as that of the linear guide I. The rotary connection block is installed at the edge of the disc.

[0009] Preferably, a threaded hole is provided on the side surface of the rotary connection block.

[0010] Preferably, the vibration generating device includes casters, a bracket, a rotating bearing assembly I, an exciter, a rotating bearing assembly II, a handwheel, a T-shaped handle, and a moving vehicle body. The moving vehicle body is provided in a square structure. The casters are installed in pairs at the four corners of the bottom of the moving vehicle body and are symmetric about the center line of the moving vehicle body. The distance between the paired casters is the same as the distance of the linear guide I. Notches are provided on the front and rear sides of the moving vehicle body, and a cylindrical fulcrum is provided in the notches. The T-shaped handle is installed in the rear notch and can drive the moving vehicle body to move with the cylindrical fulcrum as the fulcrum. The bracket is fixed to the upper surface of the moving vehicle body. The central axis of the rotating bearing assembly I is fixed to the exciter. The rotating bearing assembly I and the rotating bearing assembly II are fixed to the bracket. The rotating bearing assembly I and the rotating bearing assembly II are connected through gears. The rotating bearing assembly II is fixed to the handwheel.

[0011] Preferably, the bracket is perpendicularly welded and fixed to the moving vehicle body.

[0012] Preferably, the rotating bearing assembly I is in interference fit with the bracket through cylindrical roller bearings. One end of the rotating bearing assembly II is in interference fit with the bracket through cylindrical roller bearings, and the other end of the rotating bearing assembly II is threadedly connected to the handwheel.

[0013] Preferably, the hydraulic lifting device includes an oil cylinder, a boosting handle, an oil pipeline, a hydraulic cylinder, and a piston rod. The front end of the boosting handle is connected to the base of the oil cylinder through a connecting bar. The middle part of the boosting handle is connected to the interior of the oil cylinder through a piston. The boosting handle, the connecting bar, the base of the oil cylinder, and the piston form a lever mechanism. The oil pipeline is installed in the workbench of the chassis fixing device. The oil pipeline connects the oil cylinder and four hydraulic cylinders. Both the oil cylinder and the hydraulic cylinders are fixed to the upper surface of the workbench. The four hydraulic cylinders are arranged in a rectangle, and a piston rod is correspondingly arranged in each hydraulic cylinder. The top of the piston rod is fixed to the vibration table device through a square plate.

[0014] Preferably, the vibration table device includes a slide table assembly, a linear slide rail, a connector, a vibration table for clamping a workpiece to be measured, a connecting plate I, and a connecting plate II. Circular through holes corresponding to the vibration generating device are arranged between the connecting plate I and the connecting plate II. The upper surface of the connecting plate II is fixed to the connecting plate I through 4 slide table assemblies arranged in a matrix. The connecting plate I can slide relative to the connecting plate II along the slide rail of the slide table assembly in the X-axis direction or the Y-axis direction. The connecting plate I is fixed to the vibration table through a linear slide rail arranged in the Z-axis direction. The connector is installed on the side surface of the vibration table and the lower surface corresponding to the circular through hole for connecting with the vibration generating device to perform excitation vibration.

[0015] The beneficial effects of the present invention are as follows:

[0016] The structure of the present invention is simple. Using one exciter can realize the vibration test of the workpiece to be measured in multiple directions and with multiple degrees of freedom. The cost is low, and it is convenient to use. Moreover, most of the connections in the present invention adopt mechanical methods, so the operation will be more stable, not easily interfered by the power supply situation, have strong adaptability to the use environment, are convenient for transportation, and have better use effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the overall structure schematic diagram of the present invention;

[0019] Figure 2 is the structure schematic diagram of the chassis fixing device of the present invention;

[0020] Figure 3 is the structure schematic diagram of the direction rotating device of the present invention;

[0021] Figure 4 is a schematic structural diagram of the vibration generating device of the present invention;

[0022] Figure 5 is a schematic structural diagram of the hydraulic lifting device of the present invention;

[0023] Figure 6 is a schematic structural diagram of the vibration table device of the present invention;

[0024] Figure 7 is a schematic diagram of the moving principle of the vibration generating device of the present invention;

[0025] In the figure: 1. Chassis fixing device, 2. Direction rotating device, 3. Vibration generating device, 4. Hydraulic lifting device, 5. Vibration table device, 11. Workbench, 12. Fixed support I, 13. Fixed support II, 14. Linear guide rail I, 21. Outer ring of slewing bearing, 22. Linear guide rail II, 23. Rotary connecting block, 24. Disc, 25. Inner ring of slewing bearing, 31. Caster, 32. Bracket, 33. Rotating bearing assembly I, 34. Vibrator, 35. Rotating bearing assembly II, 36. Handwheel, 37. T-shaped handle, 38. Moving vehicle body, 41. Oil cylinder, 42. Boosting handle, 43. Oil pipeline, 44. Hydraulic cylinder, 45. Piston rod, 51. Slide table combination, 52. Linear slide rail, 53. Connector, 54. Vibration table surface, 55. Connecting plate II, 56. Connecting plate I. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Such as Figures 1 to 7As shown in the figure, this embodiment provides a three-axis tilting device for a mechanical electric vibration table, including a chassis fixing device 1. The chassis fixing device 1 is connected to a vibration table surface device 5 through a hydraulic lifting device 4. A vibration table surface 54 for fixing a workpiece to be measured and capable of moving in three directions of the X-axis, Y-axis, and Z-axis is provided on the vibration table surface device 5. Linear guide rails I 14 arranged in the X-axis and Y-axis directions corresponding to the vibration table surface 54 are provided on the chassis fixing device 1. A rotatable direction rotating device 2 is installed at a position corresponding to the lower part of the vibration table surface device 5 on the chassis fixing device 1. A linear guide rail II 22 capable of splicing with the linear guide rails I 14 in the X-axis and Y-axis directions to form a guide rail is provided on the direction rotating device 2. A vibration generating device 3 capable of sliding along the linear guide rails I 14 and the linear guide rail II 22 and exciting the vibration table surface 54 in three directions of the X-axis, Y-axis, and Z-axis is installed on the linear guide rail I 14.

[0028] The X-axis, Y-axis, and Z-axis of this embodiment are determined based on Figure 1 the coordinate system shown.

[0029] The chassis fixing device 1 includes a workbench 11, a fixed support I 12, a fixed support II 13, and linear guide rails I 14. The workbench 11 is a hollow steel plate. Cross-shaped grid-shaped reinforcing plates are welded in the hollow part of the workbench 11. A circular groove is provided on the upper surface of the workbench 11. The linear guide rails I 14 are arranged in pairs on the upper surface of the workbench and are distributed in the X-axis and Y-axis directions on the horizontal plane, and their symmetry lines pass through the center of the circular groove. The fixed supports I 12 are distributed in pairs on both sides of the linear guide rails I 14, and threaded holes are provided on their upper surfaces for matching with the upper surface of the moving vehicle body 38, and are fixed with bolts and nuts through the respective threaded holes. The fixed supports II 13 are distributed in pairs parallel to the transverse fixed supports I 12 outside the circular groove, and threaded holes are provided on their upper surfaces for matching with the lower surface of the moving vehicle body 38, and are fixed with bolts and nuts through the respective threaded holes. The functions of the fixed supports I 12 and the fixed supports II 13 are to offset the reaction forces received during the excitation of the vibration generating device 3.

[0030] The direction rotating device 2 includes a slewing bearing outer ring 21, a linear guide II 22, a rotating connection block 23, a disk 24, and a slewing bearing inner ring 25; the slewing bearing outer ring 21 is connected to the lower surface of the workbench 11, and the inner ring 25 is connected to the disk 24; the shape of the disk 24 fits the circular groove left on the upper surface of the workbench 11, and the upper surface of the disk 24 is flush with the upper surface of the workbench 11. The disk 24 is provided with a linear guide II 22 and a rotating connection block 23; the linear guide II 22 is laid in pairs, and its symmetry line passes through the center of the disk 24. The disk 24 and the circular groove have the same center line, and the spacing of the linear guide II 22 is the same as that of the linear guide I 14; the rotating connection block 23 is installed at the edge of the disk 24. A threaded hole is opened on the side of the rotating connection block 23. When the direction of the vibrator 34 of the vibration generating device 3 needs to be changed, the operator only needs to move the vibrator 34 onto the disk 24, insert a threaded crowbar into the threaded hole of the rotating connector 23, and turn it to change the direction of the vibrator 34.

[0031] The vibration generating device 3 includes casters 31, a bracket 32, a rotating bearing assembly I 33, a vibrator 34, a rotating bearing assembly II 35, a handwheel 36, a T-shaped handle 37, and a mobile vehicle body 38; the casters 31 are distributed in pairs at the four corners of the square mobile vehicle body 38 and are symmetric about the center line of the mobile vehicle body 38. The spacing of the casters 31 is the same as that of the linear guide I 14; notches are opened on the front and rear sides of the mobile vehicle body 38, and four threaded holes are opened on the left and right sides of the mobile vehicle body 38. A cylindrical fulcrum is left in the notch as Figure 7As shown, the T-shaped handle 37 is placed in the rear slot. The staff can use the T-shaped handle 37 to push the entire vibration generating device 3 forward or backward by taking the cylindrical fulcrum as the fulcrum through the opened slot and using the lever principle, with the cooperation of the casters 31 and the linear guide rail I14. The bracket 32 is vertically fixed on the upper surface of the moving vehicle body 38 by welding; the central axis of the rotating bearing assembly I33 is fixed to the body of the vibrator 34 by welding, so as to drive its rotation. The axial positioning is realized by the interference fit of the cylindrical roller bearing of the rotating bearing assembly I33 and the opening on the bracket 32. One end of the rotating bearing assembly II35 realizes axial positioning through the interference fit of the cylindrical roller bearing and the opening on the bracket 32; the other end of the rotating bearing assembly II35 is threadedly connected to the rotating handwheel 36. The rotation between the rotating bearing assembly I33 and the rotating bearing assembly II35 is transmitted through gears. A large gear is installed on the rotating bearing assembly I33, and a small gear corresponding to the large gear is installed on the rotating bearing assembly II35. The gears are fixed in a manner well-known to those skilled in the art. The large and small transmission gears are externally provided with a sealed box well-known to those skilled in the art for dust prevention treatment. When it is necessary to rotate the vibrator to achieve vibration excitation, only by rotating the handwheel 36 can the vibrator 34 be driven to rotate and thus achieve vibration excitation. A position fixing plate corresponding to the rotating bearing assembly I33 is welded on the bracket 32. Positioning pin holes for position fixing are correspondingly arranged on the position fixing plate and the central axis of the rotating bearing assembly I33. The position fixing plate in this embodiment can realize the positioning of the vibrator 34 in two directions, one is to realize the horizontal positioning of the vibrator, and the other is to realize the vertical positioning of the vibrator.

[0032] The hydraulic lifting device 4 described above includes an oil cylinder 41, a pressure boosting handle 42, an oil pipeline 43, a hydraulic cylinder 44, and a piston rod 45; the front end of the pressure boosting handle 42 is connected to the base of the oil cylinder 41 well-known to those skilled in the art through a connecting bar well-known to those skilled in the art. The middle of the pressure boosting handle 42 is connected to the inside of the oil cylinder 42 through a piston. The oil pipeline 43 is installed in the workbench 11 in an existing manner well-known to those skilled in the art and communicates with the oil cylinder 41 and the four hydraulic cylinders 44 respectively; both the oil cylinder 41 and the hydraulic cylinder 44 are fixedly welded to the upper surface of the workbench 11. The four hydraulic cylinders 44 are distributed in a rectangle, and each hydraulic cylinder 44 is equipped with a piston rod 45; a square plate is welded to the top of the piston rod 45, and threaded holes are processed at the four corners of the square plate for subsequent connection and fixation with the connecting plate I56.

[0033] The vibration table device 5 includes a slide table assembly 51, a linear slide rail 52, a connector 53, a vibration table 54 for clamping the object to be tested, a connecting plate I 55, and a connecting plate II 56. A circular through-hole corresponding to the vibration generating device 3 is provided between the connecting plate I 55 and the connecting plate II 56. The upper surface of the connecting plate II 56 is fixed to the connecting plate I 55 by 4 slide table assemblies 51 arranged in a matrix. The connecting plate I 55 can slide relative to the connecting plate II 56 along the slide rail of the slide table assembly 51 in the X-axis or Y-axis direction. The X-axis guide rail well-known to those skilled in the art for connecting the slide table assembly 51 to the connecting plate II 56 and the Y-axis guide rail well-known to those skilled in the art for connecting to the connecting plate I 55 are used to ensure that the vibration table 54 has movement margins in the X and Y axis directions when the vibration generating device 3 performs horizontal excitation; the connecting plate I 55 is fixed to the vibration table 54 by a linear slide rail 52 arranged in the Z-axis direction. The connector 53 is installed on the side surface of the vibration table 54 and the lower surface corresponding to the circular through-hole for triggering vibration with the vibration generating device 3. The linear slide rail 52 is the connection link between the vibration table 54 and the connecting plate II 55, and is used to ensure that the vibration table 54 has a movement margin in the Z-axis direction when the vibration generating device 3 performs vertical excitation; threaded holes are drilled on the vibration table 54, and fasteners are used to clamp and fix the workpiece to be measured;; when performing Z-axis direction excitation on the workpiece to be tested, the exciter 34 contacts the connector 53 through the circular through-hole to achieve excitation.

[0034] The chassis fixing device 1, the direction rotating device 2, the vibration generating device 3, the hydraulic lifting device 4, the vibration table device 5, the workbench 11, the fixed support I 12, the fixed support II 13, the linear guide rail I 14, the outer ring of the slewing bearing 21, the linear guide rail II 22, the rotary connection block 23, the disc 24, the inner ring of the slewing bearing 25, the caster 31, the bracket 32, the rotating bearing assembly I 33, the exciter 34, the rotating bearing assembly II 35, the handwheel 36, the T-shaped handle 37, the moving vehicle body 38, the oil cylinder 41, the pressure increasing handle 42, the oil pipeline 43, the hydraulic cylinder 44, the piston rod 45, the slide table assembly 51, the linear slide rail 52, the connector 53, the vibration table 54, the connecting plate II 55, and the connecting plate I 56 in this embodiment are all existing products or structures well-known to those skilled in the art, and the connections between them also adopt the existing connection methods well-known to those skilled in the art, and will not be described in detail here.

[0035] Specific working principle:

[0036] First, perform excitation in the X-axis direction. The vibration generating device 3 is installed as Figure 1As shown, the vibration generating device 3 is installed on the linear guide I14 in the X-axis direction. After moving the moving vehicle body 38 to the position shown in the figure, the moving vehicle body 38 is fixed to the fixed supports I on both sides of the linear guide I14 in the X-axis direction. At this time, the lifting of the hydraulic cylinder 44 is adjusted by the pressure increasing handle 42 so that the height of the connector 53 on the vibration table 54 corresponds to that of the vibrator 34. The vibrator 34 is rotated by using the handwheel 36, and the horizontal orientation of the vibrator 34 is positioned by using a pin shaft so that it can be connected to the connector 53 on the vibration table 54 close to the linear guide I14 in the X-axis direction to realize the X-axis direction vibration excitation of the workpiece under test on the vibration table 54.

[0037] Then, vibration excitation in the Z-axis direction is carried out. The pressure increasing handle 42 is manipulated to make the hydraulic oil enter the four hydraulic cylinders 44 through a check valve from the oil delivery pipe 43. As the piston rod 45 extends, the vibration table 54 rises. The connection between the moving vehicle body 38 and the fixed support I12 is released. As Figure 7 shown in the moving principle, the entire vibration generating device 3 is pushed forward along the linear guide I14 by using the T-shaped handle 37 through the slotted opening with the cylinder as the fulcrum by using the lever principle. When moving the vibration generating device 3, the central axis of the rotating bearing assembly I33 is fixed to the position fixing plate on the bracket 32 by using a pin shaft to prevent the vibrator 34 from swinging. The direction adjusting device 2 is adjusted to align the linear guide II22 on the disc 24 with the linear guide I14 in the X-axis direction to splice into a new guide rail. The vibration generating device 3 is continuously moved along the newly spliced X-axis guide rail until the vibration generating device 3 enters the disc 24 directly below the vibration table 54. The fixed supports II13 at the four corners are fitted with the lower surface of the moving vehicle body 38 and fixed with bolts and nuts through the holes opened respectively. At this time, the vibrator 34 corresponds to the circular through holes on the connecting plate I55 and the connecting plate II56 and also corresponds to the connector 53 on the lower surface of the vibration table 54. The fixing pin restricting the rotation of the vibrator 34 is taken out, and the handwheel 36 is rotated to drive the rotation of the rotating bearing assembly II 35. The rotation is transmitted to the rotating bearing assembly I 33 through the gear transmission, and then the vibrator 34 rotates upward. After the angle is adjusted accurately, the vertical orientation limit is realized by passing a pin shaft through the position fixing plate on the bracket 32 and the through hole of the central axis. After the vibrator is limited, the height of the piston rod 45 is adjusted. Through the connector 53, the vibrator 33 can carry out vibration excitation in the Z-axis direction on the workpiece under test.

[0038] Finally, perform excitation in the Y-axis direction. Adjust the exciter 34 to the horizontal position, continue to limit it with a pin shaft, release the connection between the moving vehicle body 38 and the fixed support II 13, pass a crowbar through the rotating connection block 23 to rotate the disc 24, and rotate the direction of the exciter 34 counterclockwise by 90 degrees to adjust it to the Y-axis direction. At this time, the linear guide II 22 is aligned with the linear guide I 14 in the Y-axis direction to form a new Y-axis guide rail. Use the T-shaped handle 37 to push the entire vibration generating device 3 along the new Y-axis guide rail by using the lever principle with the cylindrical fulcrum through the slotted opening. After reaching the specified position and the vibration generating device 3 moves onto the linear guide I 14 in the Y-axis direction and corresponds to the vibration table 54, match the fixed supports I 12 at the four corners with the upper surface of the moving vehicle body 38, and fix them with bolts and nuts through the respective openings. Open the oil return valve, and the high-pressure oil in the hydraulic cylinder 44 will flow back to the oil cylinder 41, the piston rod 45 will fall back, and the height of the vibration table 54 will be reduced to the height corresponding to the exciter 34. Adjust the exciter 34 to the horizontal position and connect it to the connector 53 on the side of the vibration table 54 to achieve excitation in the Y-axis direction.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A three-axis tilting device for a mechanical electric vibration table, characterized in that, It includes a chassis fixing device (1), the chassis fixing device (1) is connected with a vibration table device (5) through a hydraulic lifting device (4), a vibration table (54) for fixing a workpiece to be measured and capable of moving in three directions of X-axis, Y-axis and Z-axis is arranged on the vibration table device (5), a linear guide rail I (14) arranged in the X-axis direction and Y-axis direction corresponding to the vibration table (54) is arranged on the chassis fixing device (1), a rotatable direction rotating device (2) is installed at a position corresponding to the lower part of the vibration table device (5) on the chassis fixing device (1), a linear guide rail II (22) capable of splicing with the linear guide rail I (14) in the X-axis direction and Y-axis direction to form a guide rail is arranged on the direction rotating device (2), a vibration generating device (3) capable of sliding along the linear guide rail I (14) and the linear guide rail II (22) and capable of exciting the vibration table (54) in three directions of X-axis, Y-axis and Z-axis is installed on the linear guide rail I (14), the direction rotating device (2) realizes rotation through a slewing bearing structure and the direction rotating device (2) is provided with a rotating connecting block (23) with a threaded hole, and the rotation of the direction rotating device (2) can be realized through a threaded crowbar, and the linear guide rail II (22) and the linear guide rail I (14) form a seamless butt-jointed continuous guide rail when spliced, and the hydraulic lifting device (4) synchronously drives four hydraulic cylinders (44) through a lever mechanism to ensure the stable lifting of the vibration table device (5).

2. The three-axis tilting device of a mechanical electric vibration table according to claim 1, characterized in that The chassis fixing device includes a workbench (11), a fixed support I (12), a fixed support II (13), and a linear guide rail I (14). A circular groove for installing the direction rotating device (2) is arranged on the upper surface of the workbench (11). The linear guide rail I (14) is arranged in pairs in the X-axis direction and Y-axis direction on the workbench (11), and the symmetry line of each pair of linear guide rail I (14) passes through the center of the circular groove. The fixed support I (12) is arranged in pairs on both sides of the linear guide rail I (14). The fixed support II (13) is arranged in pairs outside the circular groove and is arranged parallel to the fixed support I (12) arranged in the X-axis direction. The fixed support I (12) and the fixed support II (13) are detachably connected to the vibration generating device (3) through threaded holes.

3. The three-axis tilting device of a mechanical electric vibration table according to claim 2, characterized in that The workbench (11) is arranged in a hollow shape, and a cross-grid-shaped reinforcing plate is welded inside the workbench (11).

4. The three-axis tilting device of a mechanical electric vibration table according to claim 3, characterized in that, The said direction rotating device (2) includes a slewing bearing outer ring (21), a linear guide rail II (22), a rotating connection block (23), a disc (24), and a slewing bearing inner ring (25). The slewing bearing outer ring (21) is fixed to the lower surface of the workbench (11). The slewing bearing inner ring (25) is fixedly connected to the disc (24). The disc (24) corresponds to and fits into the circular groove on the upper surface of the workbench (11). After installation, the upper surface of the disc (24) is flush with the upper surface of the workbench (11). The linear guide rail II (22) is laid in pairs on the disc (24). The symmetry line of the paired linear guide rails II (22) passes through the center of the disc (24), and the distance between the paired linear guide rails II (22) is the same as that of the linear guide rail I (14). The rotating connection block (23) is installed at the edge of the disc (24).

5. The three-axis overturning device of a mechanical electric vibration table according to claim 4, characterized in that, A threaded hole is provided on the side surface of the said rotating connection block (23).

6. The three-axis overturning device of a mechanical electric vibration table according to claim 1, characterized in that, The said vibration generating device (3) includes casters (31), a bracket (32), a rotating bearing assembly I (33), an exciter (34), a rotating bearing assembly II (35), a handwheel (36), a T-shaped handle (37), and a moving vehicle body (38). The moving vehicle body (38) is arranged in a square structure. The casters (31) are installed in pairs at the four corners of the bottom of the moving vehicle body (38) and are symmetric about the center line of the moving vehicle body (38). The distance between the paired casters (31) is the same as the distance of the linear guide rail I (14). Grooves are provided on the front and rear sides of the moving vehicle body (38). A cylindrical fulcrum is provided in the grooves. The T-shaped handle (37) is installed in the groove at the rear side and can drive the moving vehicle body (38) to move with the cylindrical fulcrum as the fulcrum. The bracket (32) is fixed to the upper surface of the moving vehicle body (38). The rotating bearing assembly I (33) and the rotating bearing assembly II (35) are fixed to the bracket (32). The rotating bearing assembly I (33) and the rotating bearing assembly II (35) are connected through gears. The rotating bearing assembly II (35) is fixed to the handwheel (36). The T-shaped handle (37) realizes the step-by-step movement of the moving vehicle body (38) through the lever principle.

7. The three-axis tilting device of a mechanical electric vibration table according to claim 6, wherein, The said bracket (32) is perpendicularly welded and fixed to the moving vehicle body (38).

8. A three-axis tilting device for a mechanical electric vibration table according to claim 6, characterized in that, The central axis of the said rotating bearing assembly I (33) is fixed to the exciter (34). The rotating bearing assembly I (33) is in interference fit with the bracket (32) through cylindrical roller bearings. One end of the rotating bearing assembly II (35) is in interference fit with the bracket (32) through cylindrical roller bearings. The other end of the rotating bearing assembly II (35) is threadedly connected to the handwheel (36).

9. The three-axis tilting device of a mechanical electric vibration table according to claim 1, characterized in that The hydraulic lifting device (4) includes an oil cylinder (41), a pressurizing handle (42), an oil pipeline (43), a hydraulic cylinder (44), and a piston rod (45). The front end of the pressurizing handle (42) is connected to the base of the oil cylinder (41) through a connecting bar. The middle part of the pressurizing handle (42) is connected to the inside of the oil cylinder (41) through a piston. The pressurizing handle (42), the connecting bar, the base of the oil cylinder (41), and the piston form a lever mechanism. The oil pipeline (43) is installed in the workbench (11) of the chassis fixing device (1). The oil pipeline (43) communicates with the oil cylinder (41) and four hydraulic cylinders (44). The oil cylinder (41) and the hydraulic cylinders (44) are both fixed to the upper surface of the workbench (11). The four hydraulic cylinders (44) are arranged in a rectangle, and a piston rod (45) is correspondingly arranged in each hydraulic cylinder (44). The top of the piston rod (45) is fixed to the vibration table device (5) through a square plate.

10. A three-axis tilting device for a mechanical electric vibration table according to claim 1, characterized in that, The vibration table device (5) includes a slide table assembly (51), a linear slide rail (52), a connector (53), a vibration table (54) for clamping a test object, a connecting plate I (55), and a connecting plate II (56). Circular through holes corresponding to the vibration generating device (3) are arranged in the middle of the connecting plate I (55) and the connecting plate II (56). The upper surface of the connecting plate II (56) is fixed to the connecting plate I (55) through 4 slide table assemblies (51) arranged in a matrix. The connecting plate I (55) can slide relative to the connecting plate II (56) in the X-axis direction or the Y-axis direction along the slide rail of the slide table assembly (51). The connecting plate I (55) is fixed to the vibration table (54) through a linear slide rail (52) arranged in the Z-axis direction. The connector (53) is installed on the side surface of the vibration table (54) and the lower surface corresponding to the circular through hole for connecting with the vibration generating device (3). The slide table assembly (51) is a cross-shaped slide rail structure, and its transverse slide rail and longitudinal slide rail realize bidirectional sliding through sliders.

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