A vibration performance experimental device

Abstract

The present application relates to a vibration performance experimental device, which belongs to the technical field of vibration test equipment, and includes a vibration isolation device and a reaction frame installed on the ground, a vibration test bench installed on the top of the vibration isolation device, and an exciter arranged on the reaction frame, wherein the vibration test bench is spaced between two vertical rods of the reaction frame, the output end of the exciter is detachably connected to the reaction frame, and the exciter is detachably connected to the table of the vibration test bench. The present application has the effect of being able to reduce the requirements for the size, bearing capacity and driving capacity of the exciter during the vibration test bench test.

Description

Technical Field

[0001] The present application relates to the technical field of vibration testing equipment, and in particular to a vibration performance experimental device. Background Art

[0002] The electric vibrator is a common vibration driving device. Due to its simple structure and good high-frequency performance, it is one of the commonly used devices for simulated vibration table tests or simulated impact tests.

[0003] In the existing vibration performance test equipment, vibration experiments are usually carried out by directly setting the exciter on the ground or digging a foundation pit on the ground to install the exciter. The former installs the exciter directly on the ground, resulting in a high table height of the vibration test bench, which is not convenient for experimental operation. Although the latter can reduce the height of the test bench, it requires foundation pit construction, which increases the difficulty and cost of installation and is difficult to adapt to rapidly changing experimental requirements. Moreover, both of the above methods will make the requirements on the size, bearing capacity and driving ability of the exciter higher during the vibration test bench test, which needs further improvement. Summary of the invention

[0004] In order to reduce the requirements on the size, bearing capacity and driving capability of the exciter during the vibration test bench test, the present application provides a vibration performance test device.

[0005] The vibration performance experimental device provided in this application adopts the following technical solution:

[0006] A vibration performance experimental device comprises a vibration isolation device and a reaction frame installed on the ground, a vibration test table installed on the top of the vibration isolation device, and an exciter arranged on the reaction frame. The vibration test table is located between two vertical rods of the reaction frame, the output end of the exciter is detachably connected to the reaction frame, and the exciter is detachably connected to the table top of the vibration test table.

[0007] By adopting the above technical scheme, the exciter is installed on the table top of the vibration test bench, and the output end of the exciter is connected to the cross bar of the reaction frame, and then the test structure is placed on the table top of the vibration test bench, and then the exciter is started to perform a simulated micro-vibration test on the test structure; compared with the method of digging a foundation pit to install the exciter so that the table top of the vibration test bench is located on the ground, or directly installing the exciter on the ground, which results in a higher height of the table top of the vibration test bench, the vibration performance experimental device can realize vibration testing without digging a foundation pit, reducing the requirements for the size, bearing capacity and driving capacity of the exciter, and has the characteristics of simple structure and wide application range.

[0008] Optionally, a placement groove is provided inside the vibration test bench, a cover plate is detachably connected to the groove of the placement groove, a cross opening is provided on the top surface of the cover plate, a movable adjustment mechanism is provided in the placement groove, the movable end of the movable adjustment mechanism is slidably connected in the cross opening, the exciter is detachably connected to the movable end of the movable adjustment mechanism, a connecting mechanism is provided on the cross bar of the reaction frame, and the connecting end of the connecting mechanism is detachably connected to the output end of the exciter.

[0009] By adopting the above technical solution, the cross-shaped opening on the top surface of the cover plate cooperates with the movable end of the movable adjustment mechanism, so that the exciter can slide in multiple directions in the cross-shaped opening, and the position of the exciter can be easily adjusted to meet different test requirements.

[0010] Optionally, the movable adjustment mechanism includes a longitudinal adjustment component, a transverse adjustment component and a movable block, the movable block extends into the cross-mouth and is slidingly connected to the cross-mouth, the movable block is detachably connected to the exciter, the longitudinal adjustment component realizes the longitudinal sliding of the movable block in the cross-mouth, and the transverse adjustment component realizes the transverse sliding of the movable block in the cross-mouth.

[0011] By adopting the above technical solution, the exciter can achieve precise lateral and longitudinal position adjustment on the vibration test bench surface, thereby meeting the needs of vibration tests in different directions and improving the flexibility and applicability of the device.

[0012] Optionally, a mounting seat is detachably connected to the top surface of the movable block, the mounting seat is rotatably connected to the vibrator, and a second limiting member for locking the vibrator after the angle is adjusted is provided on the mounting seat.

[0013] By adopting the above technical solution, the angle of the vibration exciter can be adjusted according to the test requirements and can be firmly locked after adjustment, thereby meeting the vibration test requirements in different directions.

[0014] Optionally, the lateral adjustment component includes a base, a third screw arranged on the top surface of the base, a sliding rod arranged on the top surface of the base and opposite to the third screw, and a movable seat arranged between the third screw and the sliding rod, the movable seat is slidingly connected to the sliding rod, the movable seat is threadedly connected to the third screw, the top surface of the movable seat on the lateral adjustment component is fixedly connected to the bottom surface of the movable block, and the bottom surface of the base on the longitudinal adjustment component is fixed to the inner bottom wall of the placement groove.

[0015] By adopting the above technical solution, the lateral sliding adjustment of the moving block in the cross-mouth is realized, and then the lateral position of the exciter on the vibration test bench is accurately adjusted, thereby enhancing the flexibility and accuracy of the vibration test.

[0016] Optionally, the connecting mechanism includes a connecting rod vertically passing through the cross bar on the reaction frame, a connecting assembly arranged on the bottom end of the connecting rod and connected to the output end of the exciter, and a locking assembly arranged on the cross bar. Two locking grooves located on the same vertical line and spaced apart are provided on the side of the connecting rod. The locking end of the locking assembly is plugged into the locking groove corresponding to the position to lock the connecting rod after the height is adjusted.

[0017] By adopting the above technical solution, the two locking grooves on the side of the connecting rod cooperate with the locking end of the locking assembly to achieve locking of the connecting rod at different height positions, thereby facilitating the adjustment of the height position of the exciter relative to the vibration test bench and improving the adjustment flexibility and adaptability of the device.

[0018] Optionally, the connecting assembly includes a rotating block rotatably connected to the bottom end of the connecting rod, a connecting seat fixedly connected to the bottom end of the rotating block, and a connecting component arranged on the connecting seat, the connecting component includes a flip block rotatably connected between two sides of the connecting seat and located at an opening of the connecting seat, a connecting member arranged on the flip block for connecting to the output end of the exciter, and a first limit member arranged on the outer surface of the connecting seat, the first limit member being used to limit the adjusted flip block.

[0019] By adopting the above technical solution, the first limiter is used to limit the adjusted flip block, so that the output end of the exciter can flexibly adjust the angle according to actual test requirements and effectively limit the position after adjustment, which is convenient for multi-directional vibration testing.

[0020] Optionally, a fixing piece for locking the adjusted rotating block is provided on the connecting rod.

[0021] By adopting the above technical solution, the fixing part arranged on the connecting rod can lock the rotating block after rotation, thereby preventing the rotating block from rotating unexpectedly during the vibration test, thereby ensuring the stability of the connection between the connecting rod and the exciter, and improving the accuracy and reliability of the vibration test.

[0022] Optionally, two groups of snap-in assemblies are arranged in the placement groove, and the snap-in ends of the two groups of snap-in assemblies are snap-fitted with the third screw rod on the transverse adjustment assembly and the third screw rod on the longitudinal adjustment assembly respectively.

[0023] By adopting the above technical solution, the setting of the clamping assembly can limit the position of the adjusted third screw.

[0024] Optionally, a plurality of vibration isolation devices are provided, and the plurality of vibration isolation devices are evenly distributed between the vibration test bench and the ground.

[0025] By adopting the above technical solution, multiple vibration isolation devices are set up and evenly distributed between the vibration test bench and the ground, which can significantly improve the vibration isolation effect of the vibration test bench and further improve the stability and reliability of the vibration performance experimental device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Install the exciter on the table of the vibration test bench, and connect the output end of the exciter to the crossbar of the reaction frame, then place the test structure on the table of the vibration test bench, and then start the exciter to perform a simulated micro-vibration test on the test structure; compared with the method of digging a foundation pit to install the exciter so that the table of the vibration test bench is located on the ground, or directly installing the exciter on the ground, which results in a higher table height of the vibration test bench, the vibration performance experimental device can realize the vibration test without digging a foundation pit, reducing the requirements for the size, bearing capacity and driving capacity of the exciter, and has the characteristics of simple structure and wide application range;

[0028] 2. The cross-shaped opening on the top surface of the cover plate cooperates with the moving end of the movable adjustment mechanism, so that the exciter can slide in multiple directions in the cross-shaped opening, which is convenient for adjusting the position of the exciter to meet different test requirements;

[0029] 3. The first limiter is used to limit the adjusted flip block, so that the output end of the exciter can flexibly adjust the angle according to actual test requirements, and effectively limit it after adjustment, which is convenient for multi-directional vibration testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the overall front view of this application.

[0031] Figure 2 It is a schematic diagram of the overall structure of this application.

[0032] Figure 3 yes Figure 2 A partial enlarged view of part A.

[0033] Figure 4 It is a structural schematic diagram of the reaction frame and the connecting mechanism of the present application.

[0034] Figure 5 yes Figure 4 sectional view of .

[0035] Figure 6 It is a structural schematic diagram of the mobile adjustment mechanism of the present application.

[0036] Figure 7 yes Figure 6 A partial enlarged view of part B.

[0037] Figure 8 It is a structural schematic diagram of the clamping assembly of the present application.

[0038] Description of reference numerals: 1. vibration isolation device; 2. reaction frame; 21. cross bar; 211. receiving groove; 212. dovetail groove; 22. vertical bar; 3. vibration test bench; 31. cover plate; 311. cross mouth; 32. groove; 321. second clamping groove; 4. exciter; 41. mounting seat; 42. second limit block; 43. second cross block; 44. fourth screw; 441. third handle; 45. second limit seat; 5. connecting rod; 51. locking groove; 511. through hole; 52. fixing block; 53. first screw; 531. first handle; 54. slider; 55. locking block; 56. rotating block; 561. connecting shaft; 562 , limit plate; 563, threaded hole; 564, fixing bolt; 57, connecting seat; 58, flip block; 581, rotating shaft; 582, first limit block; 59, connecting piece; 591, first horizontal block; 592, second screw; 593, first limit seat; 594, second handle; 6, moving block; 61, third screw; 611, first clamping groove; 62, sliding rod; 621, guide strip; 63, moving seat; 64, bottom plate; 641, vertical block; 642, rotating ring; 65, vertical screw; 651, nut; 7, outer sleeve; 71, rod body; 711, stopper; 72, rotating plate; 73, clamping block; 74, spring. DETAILED DESCRIPTION

[0039] The following combination Figure 1-Figure 8 This application is described in further detail.

[0040] The present application embodiment discloses a vibration performance test device. Figure 1 and Figure 2 The vibration performance experimental device includes a vibration isolation device 1 and a reaction frame 2 installed on the ground, a vibration test platform 3 installed on the top of the vibration isolation device 1, and an exciter 4 arranged on the reaction frame 2; the reaction frame 2 includes a cross bar 21 and two vertical bars 22 respectively fixed vertically on both ends of the cross bar 21, so that the cross section of the reaction frame 2 is U-shaped and its opening is set downward; the bottom end of the vertical bar 22 is installed on the ground by an expansion bolt, the vibration test platform 3 is spaced between the two vertical bars 22, the output end of the exciter 4 is detachably connected to the reaction frame 2, and the exciter 4 is detachably connected to the table top of the vibration test platform 3.

[0041] Thus, the exciter 4 is installed on the table of the vibration test bench 3, and the output end of the exciter 4 is connected to the cross bar 21, the test structure is placed on the table of the vibration test bench 3, and then the exciter 4 is started to perform a simulated micro-vibration test on the test structure, and the vibration isolation device 1 plays a role in isolating the vibration of the vibration test bench 3. Compared with the method of digging a foundation pit to install the exciter 4 so that the table of the vibration test bench 3 is located on the ground, or directly installing the exciter 4 on the ground, which results in a higher height of the table of the vibration test bench 3, the vibration performance test device can reduce the requirements for the size, bearing capacity and driving capacity of the exciter 4 during the test of the vibration test bench 3, and has the effects of simple structure and wide application range.

[0042] In order to achieve a better vibration isolation effect, multiple vibration isolation devices 1 are provided, and the multiple vibration isolation devices 1 are evenly distributed between the vibration test bench 3 and the ground. In this embodiment, the vibration isolation device 1 can be a zero-stiffness vibration isolator with ultra-low frequency or an ultra-damping air-floating vibration isolator, and the vibration isolation device 1 can also be a rubber spring 74 or a steel spring 74; the exciter 4 is preferably an electric exciter 4.

[0043] Reference Figure 2 and Figure 3 The vibration test table 3 has a placement slot with an upward notch, a horizontally arranged limit frame fixedly connected to the notch of the placement slot, and a cover plate 31 supported on the top surface of the limit frame, so that the cover plate 31 covers the notch of the placement slot, and the top surface of the cover plate 31 is flush with the table surface of the vibration test table 3. Countersunk holes are provided at the four corners of the top surface of the cover plate 31, and locking bolts threadedly connected to the limit frame are passed through the countersunk holes, so that the cover plate 31 is fixed to the limit frame through the locking bolts.

[0044] A cross opening 311 is provided on the top surface of the cover plate 31 and vertically penetrates the cover plate 31. A movable adjustment mechanism is provided in the placement groove. The movable end of the movable adjustment mechanism is slidably connected in the cross opening 311. The exciter 4 is detachably connected to the movable end of the movable adjustment mechanism. A connecting mechanism is provided on the cross bar 21. The connecting end of the connecting mechanism is detachably connected to the output end of the exciter 4.

[0045] Reference Figure 4 and Figure 5 The connecting mechanism includes a connecting rod 5 vertically passing through the cross bar 21, a connecting component arranged at the bottom end of the connecting rod 5 and connected to the output end of the exciter 4, and a locking component arranged on the cross bar 21; two locking grooves 51 located on the same vertical line and arranged at intervals are provided on the side of the connecting rod 5, and the locking end of the locking component is plugged into the locking groove 51 corresponding to the position to lock the connecting rod 5 on the cross bar 21.

[0046] The top surface of the crossbar 21 is provided with a receiving groove 211 with a notch facing upwards. The locking assembly includes a fixing block 52 fixedly connected to the inner bottom wall of the receiving groove 211, a first screw rod 53 that passes through the fixing block 52 transversely and is threadedly connected to the fixing block 52, a slider 54 that is rotatably connected to the end of the first screw rod 53, and a locking block 55 that is fixedly connected to the end of the slider 54 away from the first screw rod 53; the end of the locking block 55 away from the slider 54 is plugged into and matched with the locking groove 51 corresponding to the position. In order to facilitate the rotation of the first screw rod 53, the end of the first screw rod 53 away from the slider 54 is fixedly connected with a first handle 531; in order to guide the longitudinal sliding of the slider 54, a dovetail block is fixedly connected to the bottom surface of the slider 54, and a dovetail groove 212 that is slidably connected to the dovetail block is provided on the inner bottom wall of the receiving groove 211, and the length direction of the dovetail groove 212 is consistent with the length direction of the receiving groove 211. In this embodiment, the locking block 55 and the locking slot 51 are both square in shape, and the height of the connecting assembly can be adjusted by inserting the locking block 55 into the locking slot 51 at different positions.

[0047] The connecting assembly includes a rotating block 56 rotatably connected to the bottom end of the connecting rod 5, a connecting seat 57 fixedly connected to the bottom end of the rotating block 56, and a connecting component arranged on the connecting seat 57. The cross-section of the connecting seat 57 is U-shaped and its opening is arranged downward. The connecting component is arranged at the opening of the connecting seat 57; the connecting component is detachably connected to the output end of the exciter 4.

[0048] A connecting shaft 561 is fixedly connected to the top surface of the rotating block 56, and a limiting plate 562 is fixedly connected to the top of the connecting shaft 561. The top of the connecting shaft 561 extends into the connecting rod 5 along the bottom end of the connecting rod 5. The connecting shaft 561 is cylindrical, and the limiting plate 562 is disc-shaped. The connecting shaft 561 is rotatably connected to the connecting rod 5 through the limiting plate 562. Four threaded holes 563 with equal spacing are opened on the circumference of the limiting plate 562, and a through hole 511 is opened on the circumference of the connecting rod 5. The number of the through holes 511 is consistent with the number of the threaded holes 563 and corresponds to one by one. A fixing piece is passed through one of the through holes 511. In this embodiment, the fixing piece is a fixing bolt 564, which passes through the through hole 511 and is threadedly connected to the threaded hole 563. Both the connecting rod 5 and the rotating block 56 are square, so as to facilitate the judgment of whether the rotating block 56 has rotated 90°.

[0049] The connecting component includes a flip block 58 rotatably connected between the two sides of the connecting seat 57 and located at the opening of the connecting seat 57, a connecting piece 59 arranged on the flip block 58 for connecting to the output end of the exciter 4, and a first limit piece arranged on the outer surface of the connecting seat 57; both ends of the flip block 58 are fixedly connected with a rotating shaft 581, the ends of the two rotating shafts 581 away from each other both penetrate the connecting seat 57 and extend to the outside of the connecting seat 57, and the ends of the two rotating shafts 581 away from each other are fixedly connected with a first limit block 582; the number of the first limit pieces is consistent with the number of the first limit blocks 582 and corresponds one to one, and the limiting position of the limiting end of the first limit piece corresponds to the first limit block 582, so as to limit the flip block 58 after the 90° rotation.

[0050] The first limiting member includes a first horizontal block 591 fixedly connected to the outer surface of the connecting seat 57, a second screw rod 592 vertically penetrating the first horizontal block 591 and threadedly connected to the first horizontal block 591, and a first limiting seat 593 rotatably connected to the bottom end of the second screw rod 592; the cross section of the first limiting seat 593 is U-shaped and its opening is set downward, the first limiting block 582 is square, and the first limiting seat 593 is engaged with the first limiting block 582 to limit the first limiting block 582. In order to facilitate the rotation of the second screw rod 592, a second handle 594 is fixedly connected to the top of the second screw rod 592. In this embodiment, the connecting member 59 is a connecting bolt, which vertically penetrates the flip block 58 and is threadedly connected to the flip block 58. The output end of the exciter 4 is provided with a connecting groove threadedly connected to the connecting bolt; thereby, under the threaded connection of the connecting bolt and the connecting groove, the flip block 58 is detachably connected to the output end of the exciter 4.

[0051] Reference Figure 3 and Figure 6 The movable adjustment mechanism includes a longitudinal adjustment component arranged in the placement groove, a transverse adjustment component located above the longitudinal adjustment component and connected to the moving end of the longitudinal adjustment component, and a moving block 6 located above the transverse adjustment component and connected to the moving end of the transverse adjustment component; the moving block 6 extends into the cross-opening 311 and is slidably connected to the cross-opening 311, and the top surface of the moving block 6 is detachably connected to the exciter 4. The longitudinal adjustment component realizes the longitudinal sliding of the moving block 6 in the cross-opening 311, and the transverse adjustment component realizes the transverse sliding of the moving block 6 in the cross-opening 311. In the initial state, the moving block 6 is located at the center of the cross-opening 311.

[0052] Since the structures and principles of the longitudinal adjustment assembly and the transverse adjustment assembly are consistent, in this embodiment, the transverse adjustment assembly is used as an example for explanation. The transverse adjustment assembly includes a base, a third screw 61 arranged on the top surface of the base, a slide bar 62 arranged on the top surface of the base and opposite to the third screw 61, and a moving seat 63 arranged between the third screw 61 and the slide bar 62; the moving seat 63 is slidably connected to the slide bar 62, and the moving seat 63 is threadedly connected to the third screw 61. The top surface of the moving seat 63 on the transverse adjustment assembly is fixedly connected to the bottom surface of the moving block 6, and the bottom surface of the base on the longitudinal adjustment assembly is fixed to the inner bottom wall of the placement groove.

[0053] The base includes a bottom plate 64, a vertical block 641 fixedly connected to the end of the top surface of the bottom plate 64, and a rotating ring 642 fixedly connected to the end of the top surface of the bottom plate 64 and opposite to the vertical block 641; the third screw 61 passes through the rotating ring 642 and is rotatably connected to the rotating ring 642 through a bearing, and the side of the vertical block 641 close to the rotating ring 642 is fixedly connected to the end of the sliding rod 62; the sliding rod 62 and the third screw 61 are located on the same straight line, and the ends of the sliding rod 62 and the third screw 61 that are close to each other are spaced apart; a guide bar 621 is fixedly connected to the circumferential side of the sliding rod 62, the length direction of the guide bar 621 is consistent with the length direction of the sliding rod 62, and the guide bar 621 is slidably connected to the movable seat 63.

[0054] Reference Figure 6 and Figure 7 , vertical screws 65 are installed at the four corners of the top surface of the moving block 6, and each vertical screw 65 is threadedly connected with a nut 651; the vertical screw 65 is connected to the mounting seat 41, the cross-section of the mounting seat 41 is U-shaped and its opening is set upward, the vertical screw 65 passes through the bottom surface of the mounting seat 41, and the bottom surface of the mounting seat 41 is limited between the nut 651 and the moving block 6; two symmetrically arranged rotating shafts are fixedly connected to the circumferential side of the casing of the exciter 4, and the end of the rotating shaft away from the exciter 4 passes through the side of the mounting seat 41 and extends to the outside of the mounting seat 41, and the rotating shaft is rotatably connected to the mounting seat 41; the end of the rotating shaft away from the exciter 4 is fixedly connected to the second limit block 42, and a second limit piece for limiting the second limit block 42 is provided on the outer surface of the mounting seat 41; the number of the second limit pieces is consistent with the number of the second limit blocks 42 and corresponds one to one.

[0055] The second limiting member includes a second horizontal block 43 fixedly connected to the outer side of the mounting seat 41, a fourth screw rod 44 vertically penetrating the second horizontal block 43 and threadedly connected to the second horizontal block 43, and a second limiting seat 45 rotatably connected to the top of the fourth screw rod 44; the second limiting seat 45 has a U-shaped cross section and its opening is arranged upward, and the second limiting seat 45 is engaged with the second limiting block 42 to limit the second limiting block 42. In order to facilitate the rotation of the fourth screw rod 44, a third handle 441 is fixedly connected to the bottom end of the fourth screw rod 44.

[0056] Reference Figure 6 and Figure 8 In order to limit the adjusted third screw 61, two sets of clamping components are arranged in the placement groove, and the clamping ends of the two sets of clamping components are respectively clamped and matched with the third screw 61 on the transverse adjustment component and the third screw 61 on the longitudinal adjustment component.

[0057] The clamping assembly includes an outer sleeve 7 fixedly connected to the inner side wall of the placement groove, a rod body 71 slidably connected in the outer sleeve 7, a rotating plate 72 rotatably connected to the end of the rod body 71, and a clamping block 73 fixedly connected to the end of the rotating plate 72 away from the rod body 71. The outer sleeve 7 is a hollow cylinder with an opening at one end. The end of the rod body 71 away from the rotating plate 72 is fixedly connected to a stopper 711 slidably connected in the outer sleeve 7. The end of the rod body 71 away from the stopper 711 extends along the opening of the outer sleeve 7 to the outside of the outer sleeve 7, and a stopper ring extends radially from the opening of the outer sleeve 7. The rod body 71 is slidably connected to the inner ring side of the stopper ring, and the stopper ring limits the stopper 711 so that the rod body 71 cannot be separated from the outer sleeve 7; a spring 74 is fixedly connected between the inner end wall of the outer sleeve 7 and the stopper 711. The cross section of the clamping block 73 is polygonal, and the clamping block 73 is clamped with the end of the third screw 61.

[0058] Reference Figure 2 and Figure 8 , grooves 32 are provided on two sides of the vibration test table 3, and the two grooves 32 correspond to the positions of the two rotating plates 72 respectively. The end of the rod body 71 away from the outer sleeve 7 passes through the vibration test table 3 and extends into the groove 32. The rotating plate 72 is located in the groove 32. The end of the third screw rod 61 away from the slide rod 62 extends into the groove 32, and the third screw rod 61 is rotatably connected to the groove 32. The end of the third screw rod 61 away from the slide rod 62 is provided with a first clamping groove 611 (see Figure 6 ), a second clamping groove 321 opposite to the first clamping groove 611 is defined in the groove 32, the first clamping groove 611 and the second clamping groove 321 are located on the same straight line, and the rod body 71 is located between the first clamping groove 611 and the second clamping groove 321; the first clamping groove 611, the second clamping groove 321 and the clamping block 73 have the same contour, and the clamping block 73 is clamped with the first clamping groove 611 or the second clamping groove 321.

[0059] The setting of the first engaging groove 611 on the third screw 61 facilitates the rotation of the third screw 61 by means of a tool; when the engaging block 73 is engaged in the second engaging groove 321 and the third screw 61 needs to be limited, the rotating plate 72 is pulled in the direction of the tension spring 74 so that the rotating plate 72 is located outside the groove 32, thereby the engaging block 73 is disengaged from the second engaging groove 321, and then the rotating plate 72 is rotated so that the position of the engaging block 73 corresponds to the position of the first engaging groove 611, and the rotating plate 72 is released. Under the resetting action of the spring 74, the engaging block 73 is engaged in the first engaging groove 611 to complete the limiting of the third screw 61.

[0060] Therefore, when a vertical vibration test is required, the locking block 55 is inserted into the locking groove 51 located below, and the vertical screw 65 passes through the mounting seat 41. The mounting seat 41 is fixed to the top surface of the moving block 6 through the threaded connection between the nut 651 and the vertical screw 65, thereby completing the connection between the exciter 4 and the moving block 6; then the connecting bolt is threadedly connected to the connecting groove to complete the connection between the output end of the exciter 4 and the connecting rod 5; the test structure is placed on the table top of the vibration test bench 3; the exciter 4 is started, and since the output end of the exciter 4 moves back and forth in the direction of approaching or moving away from the exciter 4, a vertical vibration test of the test structure is realized.

[0061] When a horizontal vibration test is required, first rotate the connecting bolt to disengage the connecting bolt from the output end of the vibrator 4, and by rotating the third handle 441, the second limit seat 45 is disengaged from the limit on the second limit block 42, and then rotate the vibrator 4 to make the output end of the vibrator 4 face the horizontal position; rotate the third handle 441 in the opposite direction to make the second limit seat 45 limit the second limit block 42, and complete the adjustment of the vibrator 4; then unlock the third screw 61 of the lateral adjustment assembly, that is: make the clamping block 73 disengage from the first clamping groove 611, and make the clamping block 73 clamp into the second clamping groove 321; use a tool to rotate the third screw 61 on the lateral adjustment assembly to make the movable block 6 move laterally along the cross opening 311 to a suitable position, and the clamping of the clamping block 73 and the first clamping groove 611 is realized to limit the third thread on the lateral adjustment assembly. Then, the locking block 55 is inserted into the locking groove 51 located above by the first handle 531. At this time, the connecting rod 5 moves downward, and the first limit seat 593 is disengaged from the limit of the first limit block 582 by the second handle 594, and the connecting bolt is aligned with the connecting groove. Then, the second handle 594 is rotated in the opposite direction to limit the first limit seat 593 to the first limit block 582. By connecting the connecting bolt to the connecting groove, the connection between the output end of the exciter 4 and the connecting rod 5 is completed. The test structure is placed on the table of the vibration test table 3; the exciter 4 is started, thereby realizing the lateral vibration test of the test structure.

[0062] When a horizontal and longitudinal vibration test is required, first rotate the connecting bolt to disengage the connecting bolt from the output end of the vibrator 4, so that the locking block 55 is plugged into the locking groove 51 located below, so as to avoid obstacles in the process of adjusting the vibrator 4. After the adjustment of the vibrator 4 is completed, the locking block 55 can be plugged into the locking groove 51 located above. By rotating the third screw 61 of the lateral adjustment assembly, the moving block 6 is located at the center of the cross 311; and by the engagement of the clamping block 73 with the first clamping groove 611, the third screw 61 on the lateral adjustment assembly is limited. Then unlock the nut 651, disengage the mounting seat 41 from the vertical screw 65, rotate the mounting seat 41 90°, and reinstall the mounting seat 41 on the top surface of the movable block 6, and rotate the third screw 61 of the longitudinal adjustment assembly to make the movable block 6 move longitudinally along the cross 311; then unlock the limit plate 562 through the fixing bolt 564, and rotate the limit plate 562 90° to make the connecting bolt face the output end of the exciter 4, and thread the connecting bolt with the connecting groove to complete the connection between the output end of the exciter 4 and the connecting rod 5; place the test structure on the table top of the vibration test bench 3; start the exciter 4, thereby realizing the longitudinal vibration test of the test structure; thereby, the vibration performance experimental device has the micro-vibration simulation function in the three axes of vertical, horizontal and longitudinal.

[0063] The implementation principle of a vibration performance experimental device in an embodiment of the present application is: the exciter 4 is installed on the table top of the vibration test bench 3, and the output end of the exciter 4 is connected to the cross bar 21 of the reaction frame, and then the test structure is placed on the table top of the vibration test bench 3, and then the exciter 4 is started to perform a simulated micro-vibration test on the test structure; compared with the method of digging a foundation pit to install the exciter 4 so that the table top of the vibration test bench 3 is located on the ground, or directly installing the exciter 4 on the ground, which results in a higher height of the table top of the vibration test bench 3, the vibration performance experimental device can realize vibration testing without digging a foundation pit, reducing the requirements on the size, bearing capacity and driving capacity of the exciter 4, and has the characteristics of simple structure and wide application range.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vibration performance test device, characterized in that: The invention comprises a vibration isolation device (1) and a reaction frame (2) installed on the ground, a vibration test bench (3) installed on the top of the vibration isolation device (1), and a vibration exciter (4) arranged on the reaction frame (2), wherein the vibration test bench (3) is located between two vertical rods (22) of the reaction frame (2), the output end of the vibration exciter (4) is detachably connected to the reaction frame (2), and the vibration exciter (4) is detachably connected to the table top of the vibration test bench (3); The vibration test bench (3) is provided with a placement groove inside, a cover plate (31) is detachably connected to the groove of the placement groove, a cross opening (311) is provided on the top surface of the cover plate (31), a movable adjustment mechanism is provided in the placement groove, a movable end of the movable adjustment mechanism is slidably connected in the cross opening (311), the exciter (4) is detachably connected to the movable end of the movable adjustment mechanism, and a connecting mechanism is provided on the cross bar (21) of the reaction frame (2), and the connecting end of the connecting mechanism is detachably connected to the output end of the exciter (4).

2. A vibration performance test device according to claim 1, characterized in that: The movable adjustment mechanism comprises a longitudinal adjustment component, a transverse adjustment component and a movable block (6); the movable block (6) extends into the cross-opening (311) and is slidably connected to the cross-opening (311); the movable block (6) is detachably connected to the exciter (4); the longitudinal adjustment component enables the longitudinal sliding of the movable block (6) in the cross-opening (311); and the transverse adjustment component enables the transverse sliding of the movable block (6) in the cross-opening (311).

3. A vibration performance test device according to claim 2, characterized in that: The top surface of the moving block (6) is detachably connected to a mounting seat (41), the mounting seat (41) is rotatably connected to the vibrator (4), and a second limiting member for locking the vibrator (4) after angle adjustment is provided on the mounting seat (41).

4. A vibration performance test device according to claim 2, characterized in that: The transverse adjustment component comprises a base, a third screw rod (61) arranged on the top surface of the base, a sliding rod (62) arranged on the top surface of the base and opposite to the third screw rod (61), and a moving seat (63) arranged between the third screw rod (61) and the sliding rod (62); the moving seat (63) is slidably connected to the sliding rod (62); the moving seat (63) is threadedly connected to the third screw rod (61); the top surface of the moving seat (63) on the transverse adjustment component is fixedly connected to the bottom surface of the moving block (6); and the bottom surface of the base on the longitudinal adjustment component is fixed to the inner bottom wall of the placement groove.

5. A vibration performance test device according to claim 1, characterized in that: The connecting mechanism comprises a connecting rod (5) vertically penetrating a cross bar (21) on a reaction frame (2), a connecting assembly arranged at the bottom end of the connecting rod (5) and connected to the output end of the exciter (4), and a locking assembly arranged on the cross bar (21), wherein two locking grooves (51) located on the same vertical line and spaced apart are provided on the side surface of the connecting rod (5), and the locking end of the locking assembly is plugged into and matched with the locking groove (51) corresponding in position to lock the connecting rod (5) after the height is adjusted.

6. A vibration performance test device according to claim 5, characterized in that: The connecting assembly comprises a rotating block (56) rotatably connected to the bottom end of the connecting rod (5), a connecting seat (57) fixedly connected to the bottom end of the rotating block (56), and a connecting component arranged on the connecting seat (57), wherein the connecting component comprises a flip block (58) rotatably connected between two sides of the connecting seat (57) and located at an opening of the connecting seat (57), a connecting member (59) arranged on the flip block (58) for connecting to the output end of the exciter (4), and a first limiting member arranged on the outer side surface of the connecting seat (57), wherein the first limiting member is used to limit the flip block (58) after adjustment.

7. A vibration performance test device according to claim 6, characterized in that: The connecting rod (5) is provided with a fixing piece for locking the adjusted rotating block (56).

8. A vibration performance test device according to claim 4, characterized in that: Two groups of clamping assemblies are arranged in the placement groove, and the clamping ends of the two groups of clamping assemblies are respectively clamped and matched with the third screw rod (61) on the transverse adjustment assembly and the third screw rod (61) on the longitudinal adjustment assembly.

9. A vibration performance test device according to claim 1, characterized in that: A plurality of vibration isolation devices (1) are provided, and the plurality of vibration isolation devices (1) are evenly distributed between the vibration test bench (3) and the ground.

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