Tri-axial co-vibration test bed

Abstract

The utility model provides a triaxial co-vibration test bench, which comprises a base, a support is arranged on the base, and a vibration excitation device and a vibration table board driven by the vibration excitation device to vibrate are arranged on the support. The vibration excitation device comprises an x-direction vibration excitation assembly, a y-direction vibration excitation assembly and a z-direction vibration excitation assembly, the x-direction vibration excitation assembly can do reciprocating motion in the x direction, the y-direction vibration excitation assembly can do reciprocating motion in the y direction, the z-direction vibration excitation assembly can do reciprocating motion in the z direction, and every two of the x direction, the y direction and the z direction are perpendicular to each other; the vibration table top comprises an x-direction driven plate which is connected with the x-direction excitation assembly and is driven by the x-direction excitation assembly to do reciprocating motion in the x direction. The y-direction driven plate is connected with the y-direction excitation assembly and is driven by the y-direction excitation assembly to do reciprocating motion in the y direction; the z-direction driven plate is connected with the z-direction excitation assembly and is driven by the z-direction excitation assembly to do reciprocating motion in the z direction; the x-direction driven plate, the y-direction driven plate and the z-direction driven plate are connected in pairs; the structure is compact and use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vibration test bench technical field, concretely relates to a triaxial same vibration test bench. BACKGROUND

[0002] Vibration test is used for simulating various vibration environmental influences encountered by the base product under the transportation, installation and use environment, to evaluate the resistance ability of the product in the expected transportation and use environment, and is widely used in the simulation test of various typical vibrations of automobile parts, electronic components, aerospace products and the like.

[0003] In order to more truly simulate the vibration environment of the product, the test piece is usually subjected to X, Y, Z three direction vibration test, and the commonly used method is that the test piece is fixed on the X, Y, Z single-axis vibration table in turn, and the vibration test in the corresponding direction is completed separately, but such test method is time-consuming and laborious, and in the test process, the test piece is not subjected to X, Y, Z vibration at the same time, and the restoration of the vibration environment is not real enough. There are also multiple excitation sources arranged on one vibration table, which are connected with the test piece and apply X, Y, Z vibration to the test piece to simulate the environment, but the structure is usually complex, the volume is large, and the use is more troublesome. SUMMARY

[0004] The utility model discloses a triaxial same vibration test bench to solve the above -mentioned problem.

[0005] The utility model discloses the technical scheme that adopts:

[0006] A triaxial same vibration test bench, including the base, be provided with the support on the base, be provided with the vibration table surface that is driven and vibrates of exciting vibration device and excited vibration device on the support,

[0007] The exciting vibration device includes x direction exciting vibration subassembly, y direction exciting vibration subassembly and z direction exciting vibration subassembly, x direction exciting vibration subassembly can reciprocating motion of x direction relative to the support, y direction exciting vibration subassembly can reciprocating motion of y direction relative to the support, z direction exciting vibration subassembly can reciprocating motion of z direction relative to the support, x direction, y direction and z direction are perpendicular to each other,

[0008] The vibration table surface includes the x direction driven plate that is connected with x direction exciting vibration subassembly and is driven and reciprocating motion of x direction of x direction exciting vibration subassembly, y direction driven plate that is connected with y direction exciting vibration subassembly and is driven and reciprocating motion of y direction of y direction exciting vibration subassembly and z direction driven plate that is connected with z direction exciting vibration subassembly and is driven and reciprocating motion of z direction of z direction exciting vibration subassembly, x direction driven plate, y direction driven plate and z direction driven plate are connected to each other.

[0009] As a further improved technical scheme of the utility model, the x-direction excitation assembly comprises an excitation source for reciprocating movement in the x direction and a connecting mechanism, the connecting mechanism connects the excitation source and the x-direction driven plate, the excitation source is a hydraulic cylinder or a pneumatic cylinder, and the y-direction excitation assembly and the z-direction excitation assembly are consistent with the x-direction excitation assembly in structure.

[0010] As a further improved technical scheme of the utility model, the connecting mechanism comprises a plane bearing connected with the excitation source and a plane bearing seat arranged on the x-direction driven plate, and the plane bearing is arranged in the plane bearing seat.

[0011] As a further improved technical scheme of the utility model, the connecting mechanism further comprises an adapter disc arranged between the end of the telescopic rod of the excitation source and the plane bearing.

[0012] As a further improved technical scheme of the utility model, an oil channel is arranged in the plane bearing, a plurality of oil supply ports are arranged on the outer circular sidewall of the plane bearing, a plurality of oil outlet ports are arranged on one end surface of the plane bearing, and the oil channel is connected with the oil supply ports and the oil outlet ports.

[0013] As a further improved technical scheme of the utility model, at least one oil groove is arranged on the end surface of the plane bearing, and the oil outlet ports are arranged on the path of the oil groove.

[0014] As a further improved technical scheme of the utility model, the support comprises a plurality of stand columns and a connecting block arranged on the stand columns, the connecting block is in a cubic shape, and the excitation device is arranged on the connecting block.

[0015] As a further improved technical scheme of the utility model, the two ends of the excitation source in the x-direction excitation assembly are respectively provided with connecting mechanisms, and each connecting mechanism is connected with one x-direction driven plate.

[0016] The two ends of the excitation source in the y-direction excitation assembly are respectively provided with connecting mechanisms, and each connecting mechanism is connected with one y-direction driven plate.

[0017] The two ends of the excitation source in the z-direction excitation assembly are respectively provided with connecting mechanisms, the connecting mechanism away from the base is connected with a z-direction driven plate, and the connecting mechanism close to the base is connected with a z-direction connecting plate, the z-direction connecting plate forms a space for the stand column to pass through between the x-direction driven plate and the y-direction driven plate.

[0018] As a further improved technical scheme of the utility model, the two faces of the connecting block extending in the x direction are respectively provided with x-direction excitation assemblies, the two faces of the connecting block extending in the y direction are respectively provided with y-direction excitation assemblies, and the two faces of the connecting block extending in the z direction are respectively provided with z-direction excitation assemblies.

[0019] As the further improved technical scheme of the utility model, the base is internally provided with an oil collecting groove, and the oil collecting groove is used for collecting the oil flowing out of the plain bearing.

[0020] The utility model has the beneficial effects that:

[0021] Through the above structure, the x-direction excitation assembly, the y-direction excitation assembly and the z-direction excitation assembly are integrated and built-in in the cover type vibration table surface, three directions are vibrated simultaneously, the test bench structure is compact, the guiding performance is good, and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of three axial vibration test bench;

[0023] Figure 2 It is the internal structure schematic diagram of three axial vibration test bench;

[0024] Figure 3 It is an embodiment of three axial vibration test bench;

[0025] Figure 4 It is the structure schematic diagram of x-direction excitation assembly;

[0026] Figure 5 It is the sectional view of plain bearing;

[0027] Figure 6 It is the structure schematic diagram of plain bearing;

[0028] Figure 7 It is the structure schematic diagram of support;

[0029] Figure 8 It is an embodiment of vibration table surface.

[0030] Wherein: 1-base, 2-support, 21-stand, 22-connection block, 3-x-direction excitation assembly, 31-hydraulic cylinder, 32-plain bearing, 321-oil way, 322-oil supply port, 323-oil outlet, 324-oil groove, 325-fixing hole, 33-plain bearing seat, 34-adapting disc, 4-y-direction excitation assembly, 5-z-direction excitation assembly, 6-vibration table surface, 61-x-direction driven plate, 62-y-direction driven plate, 63-z-direction driven plate, 64-z-direction connecting plate, 65-give way part. DETAILED DESCRIPTION

[0031] The utility model will be described in detail in the following with the specific embodiment shown in the drawings. But these embodiments do not limit the utility model, the conversion of structure, method or function made by the ordinary skill in the art according to these embodiments is included in the protection scope of the utility model.

[0032] If the utility model is described in terms of orientation (for example, up, down, left, right, front, back, outside, inside, etc.), the orientation involved needs to be defined, for example, "for the sake of clearly expressing the position and direction described in the utility model, take the instrument operator as the reference, the end close to the operator is the proximal end, and the end away from the operator is the distal end." Or define it with paper as the reference. Of course, if the position relationship between the two is defined by mutual reference in the subsequent description, it can not be defined here.

[0033] A three-axis synchronous vibration test bench, as shown in Figures 1-3 The base 1 is provided with a support 2, the support 2 is fixed relative to the base 1, the support 2 is provided with a vibration excitation device and a vibration table 6 driven by the vibration excitation device to vibrate, and the test piece is fixed on the vibration table 6 during the vibration test.

[0034] The vibration excitation device includes an x-direction vibration excitation assembly 3, a y-direction vibration excitation assembly 4, and a z-direction vibration excitation assembly 5, the x-direction vibration excitation assembly 3 can reciprocate in the x-direction relative to the support 2, the y-direction vibration excitation assembly 4 can reciprocate in the y-direction relative to the support 2, and the z-direction vibration excitation assembly 5 can reciprocate in the z-direction relative to the support 2, and the x-direction, the y-direction and the z-direction are perpendicular to each other.

[0035] The vibration table 6 includes an x-direction driven plate 61 connected with the x-direction vibration excitation assembly 3 and driven by the x-direction vibration excitation assembly 3 to reciprocate in the x-direction, a y-direction driven plate 62 connected with the y-direction vibration excitation assembly 4 and driven by the y-direction vibration excitation assembly 4 to reciprocate in the y-direction, and a z-direction driven plate 63 connected with the z-direction vibration excitation assembly 5 and driven by the z-direction vibration excitation assembly 5 to reciprocate in the z-direction, and the x-direction driven plate 61, the y-direction driven plate 62 and the z-direction driven plate 63 are connected with each other, so that the three-direction synchronous vibration of the vibration table 6 is realized through the simultaneous vibration of the x-direction vibration excitation assembly 3, the y-direction vibration excitation assembly 4 and the z-direction vibration excitation assembly 5, and then the test piece located on the vibration table 6 is subjected to three-direction synchronous vibration test. In actual use, single-direction vibration test or two-direction composite vibration test can also be carried out according to the requirements of the vibration test. Therefore, the three-axis synchronous vibration test bench provided by the utility model has a wider application range and better use convenience compared with the conventional vibration test bench.

[0036] As shown in Figure 4 The x-direction vibration excitation assembly 3 includes a vibration excitation source reciprocating in the x-direction and a connecting mechanism, the connecting mechanism connects the vibration excitation source and the x-direction driven plate 61, and as an embodiment of the utility model, the vibration excitation source can be a hydraulic cylinder 31 or an air cylinder.

[0037] The connecting mechanism comprises a planar bearing 32 connected with the vibration source and a planar bearing seat 33 arranged on the x-direction driven plate 61, the planar bearing 32 is arranged in the planar bearing seat 33, the planar bearing 32 and the planar bearing seat 33 form a planar motion pair, and the connecting mechanism transmits the vibration force output by the vibration source to the x-direction driven plate 61.

[0038] The connecting mechanism further comprises an adapter disc 34 arranged between the end of the telescopic rod of the hydraulic cylinder 31 / gas cylinder and the planar bearing 32, the diameter of the adapter disc 34 is larger than that of the telescopic rod, and the adapter disc 34 increases the connecting area and strength between the telescopic rod and the planar bearing 32.

[0039] As shown in Figures 5-6 The planar bearing 32 is internally provided with an oil channel 321 filled with oil, a plurality of oil supply ports 322 are arranged on the outer circular side wall of the planar bearing 32 and are evenly distributed in the circumferential direction with the axis of the planar bearing 32 as the center, a plurality of oil outlet ports 323 are arranged on one end surface of the planar bearing 32 and are evenly distributed in the circumferential direction with the axis of the planar bearing 32 as the center, the oil channel 321 is connected with the oil supply ports 322 and the oil outlet ports 323, and a fixing hole 325 connected with the adapter disc 34 is arranged on the other end surface of the planar bearing 32.

[0040] At least one oil groove 324 is arranged on the end surface of the planar bearing 32, and the oil outlet ports 323 are arranged on the path of the oil groove 324. As an embodiment of the utility model, the oil groove 324 is in the form of a circular ring coaxial with the planar bearing 32.

[0041] The y-direction vibration excitation assembly 4 and the z-direction vibration excitation assembly 5 have the same structure as the x-direction vibration excitation assembly 3, and thus are not described here.

[0042] As shown in Figure 7 The support 2 comprises a plurality of columns 21 and a connecting block 22 arranged on the columns 21, as an embodiment of the utility model, the connecting block 22 is in the form of a cube, and the connecting block 22 is provided with a mounting hole for mounting the vibration excitation device. The x-direction vibration excitation assembly 3, the y-direction vibration excitation assembly 4 and the z-direction vibration excitation assembly 5 are arranged on the connecting block 22, and the telescopic rod of the vibration source can drive the connecting mechanism to move relative to the connecting block 22.

[0043] As shown in Figure 8 An embodiment of the vibration table surface 6 is that two ends of the vibration source in the x-direction vibration excitation assembly 3 are respectively provided with connecting mechanisms, and each connecting mechanism is connected with one x-direction driven plate 61.

[0044] The two ends of the vibration source in the y-direction vibration assembly 4 are respectively provided with connecting mechanisms, and each connecting mechanism is connected with one y-direction driven plate 62.

[0045] The two ends of the vibration source in the z-direction vibration assembly 5 are respectively provided with connecting mechanisms, the connecting mechanism away from the base 1 is connected with a z-direction driven plate 63, and the connecting mechanism close to the base 1 is connected with a z-direction connecting plate 64, the z-direction connecting plate 64 is connected with the x-direction driven plate 61 and / or the y-direction driven plate 62, the z-direction connecting plate 64 and the x-direction driven plate 61 and / or the y-direction driven plate 62 form a clearance 65, the clearance 65 is used for passing through the column 21, and the vibration table surface 6, the vibration device and the support 2 do not interfere with each other during the vibration test.

[0046] The x-direction driven plate 61, the y-direction driven plate 62, the z-direction driven plate 63 and the z-direction connecting plate 64 are connected by welding or screwing to increase the connecting strength.

[0047] Based on the above-mentioned vibration table surface 6, at least one x-direction vibration assembly 3 is arranged on each of the two surfaces of the connecting block 22 extending in the x-direction, and the two ends of the x-direction vibration assembly 3 are respectively connected with one x-direction driven plate 61.

[0048] At least one y-direction vibration assembly 4 is arranged on each of the two surfaces of the connecting block 22 extending in the y-direction, and the two ends of the y-direction vibration assembly 4 are respectively connected with one y-direction driven plate 62.

[0049] At least one z-direction vibration assembly 5 is arranged on each of the two surfaces of the connecting block 22 extending in the z-direction, and the two ends of the z-direction vibration assembly 5 are respectively connected with one z-direction driven plate 63 and one z-direction connecting plate 64. The symmetrical structure improves the force balance during the vibration of the vibration table and enhances the stability of the vibration table during work.

[0050] The base 1 is provided with an oil collecting groove 324. The oil collecting groove 324 is used for collecting oil flowing out of the plane bearing 32, so as to avoid pollution caused by oil leakage, flow and splashing.

[0051] The three-axis vibration test bench provided by the utility model integrates the x-direction vibration assembly 3, the y-direction vibration assembly 4 and the z-direction vibration assembly 5 in the vibration table surface 6, realizes three-direction vibration, and through the adaptive cover type vibration table surface 6 design, the test bench structure is compact, convenient to use, does not need additional guiding device but still has good guiding performance.

[0052] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0053] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application. Any equivalent embodiments or modifications made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A triaxial synchronous vibration test platform, characterized in that: comprising a base (1), a support (2) is arranged on the base (1), a vibration table (6) driven to vibrate by an excitation device and the support (2) is arranged on the vibration table (6); the excitation device comprises an x-direction excitation assembly (3), a y-direction excitation assembly (4) and a z-direction excitation assembly (5), the x-direction excitation assembly (3) can reciprocate in the x-direction relative to the support (2), the y-direction excitation assembly (4) can reciprocate in the y-direction relative to the support (2), and the z-direction excitation assembly (5) can reciprocate in the z-direction relative to the support (2), the x-direction, the y-direction and the z-direction are perpendicular to each other; the vibration table (6) comprises an x-direction driven plate (61) connected with the x-direction excitation assembly (3) and driven to reciprocate in the x-direction by the x-direction excitation assembly (3), a y-direction driven plate (62) connected with the y-direction excitation assembly (4) and driven to reciprocate in the y-direction by the y-direction excitation assembly (4), and a z-direction driven plate (63) connected with the z-direction excitation assembly (5) and driven to reciprocate in the z-direction by the z-direction excitation assembly (5), the x-direction driven plate (61), the y-direction driven plate (62) and the z-direction driven plate (63) are connected with each other; the x-direction excitation assembly (3) comprises an excitation source reciprocating in the x-direction and a connecting mechanism, the connecting mechanism connects the excitation source and the x-direction driven plate (61), the excitation source is a hydraulic cylinder (31) or a pneumatic cylinder, the structures of the y-direction excitation assembly (4) and the z-direction excitation assembly (5) are consistent with those of the x-direction excitation assembly (3); the connecting mechanism comprises a plane bearing (32) connected with the excitation source and a plane bearing seat (33) arranged on the x-direction driven plate (61), and the plane bearing (32) is arranged in the plane bearing seat (33); an oil channel (321) is arranged in the plane bearing (32), a plurality of oil supply ports (322) are arranged on the outer circular side wall of the plane bearing (32), a plurality of oil outlet ports (323) are arranged on one end surface of the plane bearing (32), and the oil channel (321) is in communication with the oil supply ports (322) and the oil outlet ports (323); at least one oil groove (324) is arranged on the end surface of the plane bearing (32), the oil outlet ports (323) are arranged on the path of the oil groove (324), and a plurality of the oil outlet ports (323) are arranged close to the plane bearing seat (33); the support (2) comprises a plurality of columns (21) and a connecting block (22) erected on the columns (21), the connecting block (22) is in the shape of a cube, and the excitation device is arranged on the connecting block (22); both ends of the excitation source in the x-direction excitation assembly (3) are respectively provided with a connecting mechanism, and each connecting mechanism connects one x-direction driven plate (61); both ends of the excitation source in the y-direction excitation assembly (4) are respectively provided with a connecting mechanism, and each connecting mechanism connects one y-direction driven plate (62). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Two ends of the vibration source in the z-direction vibration assembly (5) are respectively provided with connecting mechanisms, the connecting mechanism at one end away from the base connects a z-direction driven plate (63), the connecting mechanism at one end close to the base connects a z-direction connecting plate (64), the z-direction connecting plate (64) forms a let-stand part (65) with the x-direction driven plate (61) and the y-direction driven plate (62), and the let-stand part (65) is used for allowing the column (21) to pass through; Two faces of the connecting block (22) extending along the x direction are respectively provided with x-direction vibration assemblies (3), two faces of the connecting block (22) extending along the y direction are respectively provided with y-direction vibration assemblies (4), and two faces of the connecting block (22) extending along the z direction are respectively provided with z-direction vibration assemblies (5).

2. The triaxial synchronous vibration test bench according to claim 1, characterized in that: The connecting mechanism further comprises a transfer disc (34) arranged between the end of the telescopic rod of the vibration source and the plain bearing (32).

3. The triaxial synchronous vibration test bench according to claim 1, characterized in that: The base (1) is provided with an oil collecting groove, and the oil collecting groove is used for collecting the oil flowing out of the plain bearing (32).

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