A vibration device and a multiple synchronous vibration system having the same

Abstract

The present invention relates to a vibration device and a multi-station synchronous vibration system having the same, wherein the vibration device includes a vibration table, a briquetting module arranged on the vibration table, and an adjustment module arranged between the vibration table and the briquetting module, the briquetting module is used to fix the test piece, the adjustment module allows the briquetting module to swing up and down, the adjustment module includes a lower support connected to the vibration table, an upper support connected to the briquetting module, and a connecting piece, the lower support and the upper support rotate around the connecting piece, and a plurality of limit damping components are arranged between the lower support and the upper support; one end of the limit damping component contacts the upper support, and the other end contacts the lower support; the limit damping component limits the swing angle of the briquetting module. The present invention can adjust the swing of the briquetting module and the test piece fixed on the briquetting module in a wide range through the adjustment module, can meet the synchronization requirements of the test, has a simple structure and can save costs.

Description

Technical Field

[0001] The present invention relates to the field of vibration test technology, and in particular to a vibration device and a multi-unit synchronous vibration system having the same. Background Art

[0002] For vibration tests of slender rods, if only a single vibration table is used, a large table surface needs to be installed, which not only increases the equipment cost but also takes up space in the production site. At present, the existing solutions are similar to the dual-table synchronous hydraulic vibration function. However, due to the manufacturing of the table and the lag in the adjustment of the controller, it is difficult to achieve synchronous vibration under ideal conditions. The general synchronous vibration test only uses the dual-table approach to synchronous test to simulate the dual-table synchronous test. When the difference is obvious, there is a risk of damaging the long specimen.

[0003] Although some synchronous vibration test instruments use a universal ball head structure to solve the vibration difference problem that occurs during the synchronization of two platforms, the universal ball head has a compact structure, high cost, and a small decoupling range. The synchronization difference caused by the low-frequency and large displacement of the two platforms will cause a large difference in the displacement of the platforms, which exceeds the adjustment range of the universal ball head structure.

[0004] Therefore, it is necessary to provide a vibration device and a multi-station synchronous vibration system having the same, which can adjust the swing of the platform over a large range, meet the synchronization requirements of the test, and save costs. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a vibration device and a multi-unit synchronous vibration system having the same.

[0006] The technical solution of the present invention is as follows:

[0007] A vibration device comprises a vibration table, a pressure block module arranged on the vibration table, and an adjustment module arranged between the vibration table and the pressure block module, wherein the pressure block module is used to fix a test piece, and the adjustment module allows the pressure block module to swing up and down, and the adjustment module comprises a lower support connected to the vibration table, an upper support connected to the pressure block module, and a connecting piece, the lower support and the upper support rotate around the connecting piece, and a plurality of limit damping components are arranged between the lower support and the upper support; one end of the limit damping component contacts the upper support, and the other end contacts the lower support; the limit damping component limits the swing angle of the pressure block module.

[0008] As a further improvement of the present invention, the limit damping component includes a limit rod and rubber pieces arranged at both ends of the limit rod.

[0009] As a further improvement of the present invention, a plurality of first blind holes are provided on the lower surface of the upper support, and a plurality of second blind holes are provided on the upper surface of the lower support, and the first blind holes correspond to the second blind holes one by one; one end of the limit rod is inserted into the first blind hole with the rubber part, and the other end is inserted into the second blind hole with the rubber part.

[0010] As a further improvement of the present invention, the rubber member is in interference contact with the side walls of the first blind hole and the second blind hole.

[0011] As a further improvement of the present invention, the distance between the bottom of the first blind hole and the bottom of the second blind hole is H, the total length of the limiting rod and the rubber parts at both ends of the limiting rod is L, and 5mm≤HL≤8mm.

[0012] As a further improvement of the present invention, the connecting member is a first rotating shaft arranged on the upper support, and the lower support rotates around the first rotating shaft.

[0013] As a further improvement of the present invention, the connecting member includes a first rotating shaft arranged on the upper support, a second rotating shaft arranged on the lower support, and a connecting rod connecting the first rotating shaft and the second rotating shaft; the upper support rotates around the axis center of the first rotating shaft, and the lower support rotates around the axis center of the second rotating shaft.

[0014] As a further improvement of the present invention, an oil filling port is provided at one end of the first rotating shaft, a plurality of oil outlets are provided on the side wall of the first rotating shaft, and an oil passage connecting the oil filling port and the oil outlet is provided inside the first rotating shaft; the structure of the second rotating shaft is the same as that of the first rotating shaft.

[0015] As a further improvement of the present invention, the vibration table includes a base, an exciter arranged on the base, and a work surface arranged at an output end of the exciter, and the adjustment module is arranged on the work surface.

[0016] As a further improvement of the present invention, the vibration exciter is a hydraulic vibration exciter, and a servo valve is provided on the hydraulic vibration exciter.

[0017] As a further improvement of the present invention, the pressing block module includes a bottom plate arranged on the adjusting module, a pressing plate arranged above the bottom plate, and a pressing member, and the pressing member presses the test piece between the bottom plate and the pressing plate.

[0018] A multi-unit synchronous vibration system comprises at least two vibration mechanisms, on which a long test piece is fixed, wherein at least one of the vibration mechanisms is the above-mentioned vibration device.

[0019] According to the present invention of the above scheme, the beneficial effects of the present invention are:

[0020] The present invention provides a vibration device and multiple synchronous vibration systems having the same. By adjusting the module, a large range of swing adjustment can be performed on the pressing block module and the test piece fixed on the pressing block module. The structure is simple and cost-saving. The multiple synchronous vibration systems can meet the synchronization requirements of the test and improve the accuracy of the test by fixing the long test piece on multiple vibration mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a first angle adjustment module of the present invention;

[0023] Figure 3 is a schematic structural diagram of the second angle adjustment module of the present invention;

[0024] Figure 4 is a structural cross-sectional view of the third angle of the adjustment module of the present invention;

[0025] Figure 5 is a structural cross-sectional view of the fourth angle of the adjustment module of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the position limiting damping component of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the briquetting module of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the vibration table of the present invention.

[0029] In the figure: 1. vibration table; 11. base; 12. exciter; 13. work surface; 14. servo valve; 2. pressure block module; 21. bottom plate; 22. pressure plate; 3. adjustment module; 31. lower support; 311. second blind hole; 32. upper support; 321. first blind hole; 33. limit damping component; 331. limit rod; 332. rubber part; 34. first rotating shaft; 35. second rotating shaft; 36. connecting rod; 37. oil filling port; 38. oil outlet; 39. oil circuit; 4. long test piece. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] See also Figure 1-3 The present invention provides a vibration device, comprising a vibration table 1, a pressing block module 2 arranged on the vibration table 1, and an adjusting module 3 arranged between the vibration table 1 and the pressing block module 2, wherein the pressing block module 2 is used to fix the test piece, and the adjusting module 3 allows the pressing block module 2 to swing up and down, and the adjusting module 3 comprises a lower support 31 connected to the vibration table 1, an upper support 32 connected to the pressing block module 2, and a connecting member, the lower support 31 and the upper support 32 rotate around the connecting member, and a plurality of limit damping components 33 are arranged between the lower support 31 and the upper support 32; one end of the limit damping component 33 contacts the upper support 32, The other end contacts the lower support 31; the limit damping component 33 limits the swing angle of the briquetting module 2. The present invention realizes that the upper support 32 rotates relative to the lower support 31 fixed on the vibration table 1 by rotating the upper support 32 around the connecting piece, and can perform a wide range of swing adjustment on the briquetting module 2 and the test piece fixed on the briquetting module 2. The limit damping component 33 is used to limit the swing angle of the briquetting module 2 to avoid the briquetting module 2 from swinging too much and causing unnecessary damage to the test piece. At the same time, the overall structure of the present invention is relatively simple, which can save costs to a certain extent.

[0034] See also Figure 6As another embodiment of the present invention, the limit damping component 33 includes a limit rod 331 and rubber members 332 arranged at both ends of the limit rod 331. By arranging the limit rod 331 between the upper support 32 and the lower support 31, the swing of the upper support 32 can be limited. When the swing angle of the upper support 32 reaches a certain degree, the upper support 32 conflicts with the limit rod 331, and the limit rod 331 can provide swing damping for the upper support 32, thereby limiting the upper support 32 from continuing to increase the swing angle; the rubber members 332 at both ends of the limit rod 331 are elastic, and the hard contact between the upper support 32 and the limit rod 331 is replaced by the soft contact between the upper support 32 and the rubber member 332. Similarly, the soft contact between the lower support 31 and the rubber member 332 replaces the hard contact between the lower support 31 and the limit rod 331, which can protect the upper support 32, the lower support 31 and the limit rod 331 and avoid unnecessary damage.

[0035] See also Figure 4 As another embodiment of the present invention, a plurality of first blind holes 321 are provided on the lower surface of the upper support 32, and a plurality of second blind holes 311 are provided on the upper surface of the lower support 31, and the first blind holes 321 correspond to the second blind holes 311 one by one; one end of the limiting rod 331 is inserted into the first blind hole 321 with the rubber member 332, and the other end of the limiting rod is inserted into the second blind hole 311 with the rubber member 332. When the upper support 32 swings, the upper support 32 and the lower support 31 break the parallel state. At this time, interaction forces are generated between the first blind hole 321 and the rubber member 332, and between the second blind hole 311 and the rubber member 332. Under the elastic deformation of the rubber member 332, the upper support 32 swings downward by a certain angle.

[0036] Preferably, the limit damping component 33 and the upper support 32 and the lower support 31 are all independently arranged, which is conducive to the disassembly and assembly of the limit damping component 33. At the same time, the number of limit rods 331 can be increased or decreased according to the use requirements to adjust the damping of the upper support 32, which can ensure the swing freedom of the upper support 32 and the appropriate swing range; the limit rod 331 and the rubber member 332 are fixed by screws, and the side of the limit rod 331 is provided with two opposite planes, which is conducive to the tool clamping the limit rod 331 and facilitating the combination of the limit rod 331 and the rubber member 332; the limit rod 331 and the rubber member 332 are disassembled and assembled as a whole, which reduces the difficulty of disassembly and assembly of the limit damping component 33; at the same time, it can also avoid the rubber member 332 being stuck in the first blind hole 321 or the second blind hole 311 and difficult to remove, avoid unnecessary problems during use, and improve the overall stability of use.

[0037] Preferably, the rubber member 332 is in interference contact with the side walls of the first blind hole 321 and the second blind hole 311, which can prevent the limiting rod 331 and the rubber member 332 from shaking in the first blind hole 321 and the second blind hole 311, thereby improving the installation stability of the limiting rod 331 and the rubber member 332; at the same time, the rubber member 332 is always in contact with the first blind hole 321 and the second blind hole 311, and once the upper support 32 swings, the rubber member 332 can provide damping for the upper support 32, thereby improving timeliness.

[0038] Preferably, the distance between the bottom of the first blind hole 321 and the bottom of the second blind hole 311 is H, the total length of the limiting rod 331 and the rubber parts 332 at both ends of the limiting rod 331 is L, 5mm≤HL≤8mm, that is, the limiting rod 331 and the rubber part 332 can be adjusted up and down between the first blind hole 321 and the second blind hole 311, and the adjustment distance is 5-8mm, which is conducive to the disassembly and assembly of the limiting rod 331 and the rubber part 332.

[0039] As another embodiment of the present invention, the connecting member is a first rotating shaft 34 disposed on the upper support 32 , and the lower support 31 rotates around the first rotating shaft 34 , so that the upper support 32 can rotate relative to the lower support 31 and the upper support 32 can swing.

[0040] As another embodiment of the present invention, the connecting member includes a first rotating shaft 34 arranged on the upper support 32, a second rotating shaft 35 arranged on the lower support 31, and a connecting rod 36 connecting the first rotating shaft 34 and the second rotating shaft 35; the upper support 32 rotates around the axis of the first rotating shaft 34, the lower support 31 rotates around the axis of the second rotating shaft 35, and the upper and lower ends of the connecting rod 36 can rotate. Therefore, when the upper support 32 swings, the elastic deformation of the rubber part 332 is utilized to change the connecting rod 36 from the original vertical state to an inclined state, which can not only realize the downward swing of the upper support 32 to a certain angle, but also realize the upper support 32 to be offset in the swinging direction by a certain distance, which can better protect the block module 2 and the test piece, and can also improve the overall synchronous vibration performance.

[0041] When the adjustment module 3 needs regular maintenance or replacement of parts, the first rotating shaft 34 is disassembled, the upper support 32 and the connecting rod 36 can be separated, and the limit damping component 33 can also be removed for replacement. After the maintenance is completed, the lower ends of the required number of limit damping components 33 are first inserted into the second blind holes 311, and then the upper support 32 is covered, and the upper ends of the limit damping components 33 are respectively inserted into the corresponding first blind holes 321, and finally the first rotating shaft 34 is installed to complete the installation; similarly, if the lower support 31 needs to be maintained or repaired, the second rotating shaft 35 is disassembled to complete the separation of the lower support 31 and the connecting rod 36.

[0042] See also Figure 5As another embodiment of the present invention, in order to improve the flexibility of the first rotating shaft 34 and the second rotating shaft 35, and also in order to avoid the surface of the first rotating shaft 34 and the second rotating shaft 35 from being dry and causing dry friction between the surface and the connecting rod 36, resulting in damage to the first rotating shaft 34, the second rotating shaft 35 and the connecting rod 36, it is necessary to regularly lubricate the surface of the first rotating shaft 34 and the second rotating shaft 35. Therefore, an oil filling port 37 is provided at one end of the first rotating shaft 34, and a plurality of oil outlets 38 are provided on the side wall of the first rotating shaft 34. An oil path 39 connecting the oil filling port 37 and the oil outlet 38 is provided inside the first rotating shaft 34. The lubricating oil enters from the oil filling port 37, passes through the oil path 39, and finally reaches the surface of the first rotating shaft 34 from the oil outlet 38, thereby playing a lubricating role. The oil can be lubricated without removing the first rotating shaft 34, thereby avoiding unnecessary disassembly and improving work efficiency. The structure of the second rotating shaft 35 is the same as that of the first rotating shaft 34.

[0043] See also Figure 8 As another embodiment of the present invention, the vibration table 1 includes a base 11, an exciter 12 arranged on the base 11, and a work surface 13 arranged at the output end of the exciter 12. The adjustment module 3 is arranged on the work surface 13, and the required vibration is output by the exciter 12 and transmitted to the adjustment module 3, the pressing block module 2 and the test piece in sequence through the work surface 13.

[0044] Preferably, the vibrator 12 is a hydraulic vibrator, which can achieve the large displacement movement required for the test. A servo valve 14 is provided on the hydraulic vibrator. The servo valve 14 performs valve core switching movement through a signal received from an external controller. The hydraulic vibrator switches the oil circuit through the movement of the valve core to achieve reciprocating motion, and can push the work surface 13 to perform vibration testing.

[0045] See also Figure 7 As another embodiment of the present invention, the pressing block module 2 includes a base plate 21 arranged on the adjustment module 3, a pressing plate 22 arranged above the base plate 21, and a pressing member, and the pressing member presses the test piece between the base plate 21 and the pressing plate 22. Preferably, the pressing member can adopt a variety of structures, such as screws, nuts, buckles, etc.

[0046] A multiple synchronous vibration system includes at least two vibration mechanisms, and a long specimen 4 is fixed on the vibration mechanisms, wherein at least one vibration mechanism is the above-mentioned vibration device. By fixing the long specimen 4 on multiple vibration mechanisms, when performing a synchronous test, each vibration device drives the long specimen to swing adaptively according to the vibration difference between each other, which can meet the synchronization requirements of the test and improve the accuracy of the test.

[0047] In summary, the present invention can perform a wide range of swing adjustment on the pressing block module 2 and the test piece fixed on the pressing block module 2, and then combine the limit damping component 33 to limit the swing angle of the pressing block module 2, so as to avoid the pressing block module 2 from swinging too much and causing unnecessary damage to the test piece. At the same time, the overall structure of the present invention is relatively simple, which can save costs to a certain extent; when conducting synchronous tests, each vibration device drives the long test piece to swing adaptively according to the vibration difference between each other, which can meet the synchronization requirements of the test and improve the accuracy of the test; the limit damping component 33 and the upper support 32 and the lower support 31 are all independently arranged, which is conducive to the disassembly and assembly of the limit damping component 33, and can be used according to the According to the demand, the number of limit rods 331 is increased or decreased to adjust the damping of the upper support 32, which can not only ensure the swing freedom of the upper support 32, but also ensure the appropriate swing range; the connecting member is composed of a first rotating shaft 34, a second rotating shaft 35 and a connecting rod 36, which can not only realize the upper support 32 to swing downward at a certain angle, but also realize the upper support 32 to be offset in the swinging direction by a certain distance, which can better protect the pressing block module 2 and the test piece, and can improve the overall synchronous vibration performance; by setting the oil filling port 37, the oil circuit 39 and the oil outlet 38, it is possible to add oil and lubrication without removing the first rotating shaft 34, thereby avoiding unnecessary disassembly and improving work efficiency.

[0048] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vibration device, characterized in that: The invention comprises a vibration table (1), a pressing block module (2) arranged on the vibration table (1), and an adjusting module (3) arranged between the vibration table (1) and the pressing block module (2), wherein the pressing block module (2) is used to fix the test piece, and the adjusting module (3) allows the pressing block module (2) to swing up and down, and the adjusting module (3) comprises a lower support (31) connected to the vibration table (1), an upper support (32) connected to the pressing block module (2), and a connecting piece, wherein the lower support (31) and the upper support (32) rotate around the connecting piece, and a plurality of limit damping components (33) are arranged between the lower support (31) and the upper support (32); one end of the limit damping component (33) contacts the The upper support (32) has one end in contact with the lower support (31); the limit damping component (33) limits the swing angle of the pressing block module (2); the limit damping component (33) includes a limit rod (331) and rubber parts (332) arranged at both ends of the limit rod (331); the connecting part includes a first rotating shaft (34) arranged on the upper support (32), a second rotating shaft (35) arranged on the lower support (31), and a connecting rod (36) connecting the first rotating shaft (34) and the second rotating shaft (35); the upper support (32) rotates around the axis of the first rotating shaft (34), and the lower support (31) rotates around the axis of the second rotating shaft (35).

2. The vibration device according to claim 1, characterized in that The lower surface of the upper support (32) is provided with a plurality of first blind holes (321), and the upper surface of the lower support (31) is provided with a plurality of second blind holes (311), and the first blind holes (321) correspond to the second blind holes (311) one by one; one end of the limiting rod (331) is inserted into the first blind hole (321) with the rubber part (332), and the other end of the limiting rod (331) is inserted into the second blind hole (311) with the rubber part (332).

3. The vibration device according to claim 2, characterized in that The rubber member (332) is in interference contact with the side walls of the first blind hole (321) and the second blind hole (311).

4. The vibration device according to claim 2, characterized in that The distance between the bottom of the first blind hole (321) and the bottom of the second blind hole (311) is H, the total length of the limiting rod (331) and the rubber parts (332) at both ends of the limiting rod (331) is L, and 5mm≤H-L≤8mm.

5. The vibration device according to claim 1, characterized in that The connecting member is a first rotating shaft (34) arranged on the upper support (32), and the lower support (31) rotates around the first rotating shaft (34).

6. The vibration device according to claim 1, characterized in that An oil filling port (37) is provided at one end of the first rotating shaft (34), a plurality of oil outlets (38) are provided on the side wall of the first rotating shaft (34), and an oil passage (39) connecting the oil filling port (37) and the oil outlets (38) is provided inside the first rotating shaft (34); the structure of the second rotating shaft (35) is the same as that of the first rotating shaft (34).

7. The vibration device according to claim 1, characterized in that The vibration table (1) comprises a base (11), an exciter (12) arranged on the base (11), and a work surface (13) arranged at the output end of the exciter (12), and the adjustment module (3) is arranged on the work surface (13).

8. The vibration device according to claim 7, characterized in that The vibration exciter (12) is a hydraulic vibration exciter, and a servo valve (14) is provided on the hydraulic vibration exciter.

9. The vibration device according to claim 1, characterized in that The pressing block module (2) comprises a base plate (21) arranged on the adjusting module (3), a pressing plate (22) arranged above the base plate (21), and a pressing member, wherein the pressing member presses the test piece between the base plate (21) and the pressing plate (22).

10. A multiple synchronous vibration system, characterized in that: It comprises at least two vibration mechanisms, on which the long test piece (4) is fixed, wherein at least one of the vibration mechanisms is a vibration device as claimed in any one of claims 1 to 9.

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