CN113653918B - Hydraulic vibration exciter mounting device - Google Patents

Hydraulic vibration exciter mounting device Download PDF

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Publication number
CN113653918B
CN113653918B CN202110921375.1A CN202110921375A CN113653918B CN 113653918 B CN113653918 B CN 113653918B CN 202110921375 A CN202110921375 A CN 202110921375A CN 113653918 B CN113653918 B CN 113653918B
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CN
China
Prior art keywords
hydraulic
vibration exciter
hydraulic support
support column
arc
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CN202110921375.1A
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Chinese (zh)
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CN113653918A (en
Inventor
李海超
庞福振
张航
贾地
杜圆
汤旸
秦宇璇
江沛
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Harbin Engineering University
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Harbin Engineering University
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/32—Undercarriages for supports with three or more telescoping legs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The invention relates to the technical field of mounting equipment of vibration exciters, in particular to a hydraulic vibration exciter mounting device. The base of the adjusting seat part is connected with the bracket part. The base is provided with an arc-shaped slideway for the workbench to slide. An arc-shaped positioning rack is arranged between the pair of arc-shaped slide ways. The bottom of the workbench is provided with a limit support with a limit gear. The limiting gear is meshed with the arc-shaped positioning rack. The power end of the driving device is connected with the limit gear. The base is connected with the hydraulic support column through a flat plate. The hydraulic support column is provided with a first push rod and a second push rod for adjusting the height of the flat plate. The side wall of the hydraulic support column is provided with a pump and an oil circuit integrated block. The tail end of the hydraulic support column is provided with a trundle. The hydraulic support column in the device is provided with a hydraulic system, so that the range of accurate excitation of the vibration exciter is improved, the contact point of the vibration exciter accurately reaches the preset excitation position, more stable excitation force is provided, and the effectiveness of engineering test results is ensured.

Description

Hydraulic vibration exciter mounting device
Technical Field
The invention relates to the technical field of mounting equipment of vibration exciters, in particular to a hydraulic vibration exciter mounting device.
Background
The vibration exciter is a device which is attached to mechanical equipment and used for generating excitation force, and can enable an excitation piece to obtain a certain vibration quantity with a certain form and size, so that the vibration exciter can be used for carrying out vibration and strength test on an object. At present, when an analysis test of vibration modes and the like is performed on a mechanical structure, a test method of single-point excitation multi-point response is generally adopted by a vibration exciter, each measuring point is excited by the vibration exciter, and then the vibration modes and the like of the structure are analyzed according to the response of each measuring point of a structural member.
The conventional vibration exciter device is usually provided with a tray, the semicircular arc area can be excited randomly around the rotating shaft, and the tray has a certain vertical height and cannot move freely in a plane. For experiments with multiple point excitations of different heights, moving and fixing the exciter is cumbersome. For structural members with larger curvature change, the excitation area of the semicircular arc of the conventional exciter has too high requirement on the installation of the exciter, and a plurality of inconveniences are brought to operators. Therefore, the vibration exciter has a larger excitation range and can be stably installed in engineering experiments.
Through searching, a simple hoisting device of a six-degree-of-freedom vibration exciter is disclosed in a Chinese patent document CN 106185733B. The hoisting device comprises a square frame consisting of four supporting trusses and eight horizontal trusses, wherein the four supporting trusses are internally provided with slide ways. Steering wheels are respectively arranged at four corners of the lower end of the square frame. Two position-adjustable horizontal sectional materials are arranged on the upper end face of the square frame. Two lifting lugs I are arranged on each horizontal section bar. Each lifting lug is hinged with a threaded locking member. The ends of the four threaded locking members are hinged with four second lifting lugs respectively, and the four second lifting lugs are arranged on the vibration exciter. The device utilizes the structural characteristics of the horizontal installation truss, realizes the hoisting of vibration exciters with different measuring levels, and can determine the rationalization of the installation position of the vibration exciter by adjusting the connection relation among the components, thereby ensuring the stable and safe operation of the vibration exciter in the air.
However, when the hoisting device performs vibration mode analysis on a structural member with large curvature change, the installation position of the vibration exciter is difficult to adjust, so that the excitation direction of the vibration exciter is perpendicular to the contact surface with the structural member, and the effectiveness of a test result is affected. In other words, the lifting device can only coincide the contact point of the vibration exciter with the measuring point on the structural member in space, and cannot adjust the exciting direction of the measuring point on the structural member.
In summary, in the process of implementing vibration mode analysis on a structural member with large curvature change, how to design an installation and adjustment device for a vibration exciter so as to excite excitation points of the structural member at various heights of the vibration exciter, and meanwhile, to generate exciting force on a hemispherical surface at the same height, thereby ensuring stability and persistence of the exciting force applied by the vibration exciter to the structural member with large curvature change is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide an installation and adjustment device for a vibration exciter in the process of carrying out vibration mode analysis on a structural member with large curvature change, which is used for exciting excitation points of the structural member at various heights of the vibration exciter, and meanwhile, exciting force can be generated on a hemispherical surface at the same height, so that stability and persistence of the exciting force applied by the vibration exciter to the structural member with large curvature change are ensured.
In order to achieve the above purpose, the present invention adopts the following scheme: the hydraulic vibration exciter mounting device comprises an adjusting seat component and a bracket component;
The adjusting seat part comprises a driving device, a base and a workbench for connecting a tray of the vibration exciter, wherein the base is connected with the bracket part, an arc slideway for sliding the workbench is arranged on the base, a pair of arc slideways are symmetrically distributed along the central line of the base, an arc positioning rack is arranged between the pair of arc slideways, a limiting support is arranged at the bottom of the workbench, a limiting gear is arranged on the limiting support, the limiting gear is meshed with the arc positioning rack, and the power end of the driving device is connected with the limiting gear;
The support component comprises a flat plate and a hydraulic support column, the flat plate is arranged at the head end of the hydraulic support column, the base is connected with the hydraulic support column through the flat plate, the hydraulic support column is provided with a first push rod and a second push rod, the height of the flat plate is adjusted, the second push rod is nested in the first push rod, a pump and an oil circuit integrated block are arranged on the side wall of the hydraulic support column, and the tail end of the hydraulic support column is provided with casters.
Preferably, the bracket component is provided with a plurality of hydraulic support columns, fixing columns are arranged between the hydraulic support columns, the end parts of the fixing columns are connected with the hydraulic support columns through pipe clamps, and the middle parts of the fixing columns are provided with telescopic devices for adjusting the lengths of the fixing columns. So set up, the fixed column of connection between many support columns has improved the whole rigidity of support part greatly, is favorable to reducing the natural frequency of vibration exciter work frame, and the vibration exciter of being convenient for is treated each measurement station on the survey structure and is stimulated, and telescoping device is used for adjusting the length of fixed column, and then realizes the adjustment to the contained angle size that forms between each hydraulic support column, has further promoted the stability that the vibration exciter produced exciting force.
Preferably, the head end of the second push rod is provided with a spherical joint, and the bottom of the flat plate is provided with a spherical notch matched with the spherical joint. The angle between the flat plate and the support column is convenient to change, the support structure of the support component for the adjustment seat component is favorable for optimizing the support component aiming at the structural component with large curvature change, and the excitation direction of the vibration exciter is more in line with the actual demand.
Preferably, the telescopic device is a direct current motor, the left telescopic part of the fixed column is connected with the direct current motor through a worm, and the right telescopic part of the fixed column is connected with the direct current motor through the worm. So set up, direct current motor drives left telescopic portion and right telescopic portion simultaneously, realizes the two-way flexible to the fixed column, is convenient for adjust the contained angle between each hydraulic support column.
Preferably, the driving device is a motor, the motor is connected with the limiting support through a fixed seat, the power end of the motor is connected with the limiting gear, and a button for controlling the motor is arranged on the base. The device is convenient for the workbench to finish the adjustment of the overturning angle of the workbench along the arc-shaped slideway under the drive of the motor, is favorable for the vibration exciter to quickly adjust the excitation direction, and further reduces the difficulty of clamping and positioning the vibration exciter in the vibration mode analysis process.
Preferably, the driving device is a manual rocker, and the power end of the manual rocker is connected with the limiting gear. So set up, when motor drive workstation upset, also can realize the fine setting to workstation flip angle through the mode of rotating manual rocker, further improved vibration exciter mounted position's position accuracy, and then promoted the validity of test result.
Preferably, the base is provided with a scale plate, the scale plate is provided with scale marks for marking the rotation angle of the workbench along the arc-shaped slideway, and the scale marks are distributed on the scale plate at equal intervals. The setting makes the turned position of workstation more accurate on the one hand, and on the other hand is convenient for record the turned position of workstation to this is the reference, can in time revise the deviation of turned position in the test process, has further promoted the validity of test result.
Preferably, the castor is a self-locking castor. The vibration exciter working frame is convenient to lock after moving and adjusting the position on the horizontal plane, and stability of the bracket component is further improved.
Preferably, the arc-shaped slide way is an arc-shaped slide way, and the arc-shaped positioning rack is an arc-shaped positioning rack. The arc-shaped slideway can limit the workbench to rotate along the arc track after the height position of the workbench is determined, so that the vibration exciter can generate exciting force in the hemispherical surface, and the stability and the persistence of the vibration exciter for applying the exciting force to the structural member with large curvature change are further ensured.
When the hydraulic vibration exciter mounting device is used, hydraulic support columns with proper numbers are selected according to test requirements, support components with corresponding support structures are assembled, and a self-contained tray of the vibration exciter is connected with a workbench. When the workbench reaches the designated position, the contact point of the vibration exciter is adjusted to be abutted against the structural member. When the position of the excitation point changes, the hydraulic support column is fixed again at the position where the height is needed by adjusting the travel of the hydraulic support column, the vertical height of the vibration exciter is changed, and the vibration excitation task is completed for the new excitation point. When the structural member is a curved surface, the relative angle between the vibration exciter and the horizontal plane is required to be adjusted, the manual rocker is rotated according to the scale plate on the base, the overturning angle of the workbench is accurately adjusted, and after the required position is reached, the workbench is locked, so that the excitation direction of the vibration exciter is relatively perpendicular to the surface of the structural member, and effective exciting force is generated. When the position of the excitation point is required to be accurately adjusted, the first push rod of the hydraulic support column is driven by the pump, so that the vibration exciter is rapidly close to the excitation point, and the second push rod of the hydraulic support column is driven by the pump, so that the vibration exciter accurately reaches the preset excitation point.
Compared with the prior art, the hydraulic vibration exciter mounting device provided by the invention has the following outstanding substantive characteristics and remarkable progress:
1. The hydraulic support columns in the hydraulic vibration exciter mounting device are provided with the hydraulic system, the precise excitation range of the vibration exciter is improved, besides the vibration exciter can be adjusted at different heights and different horizontal positions, when the positions among the measuring points of the structural members are relatively close, the stroke of each hydraulic support column can be changed as required, and the workbench in the mounting device can be adjusted, so that the contact point of the vibration exciter can accurately and conveniently reach the preset excitation position and be mutually perpendicular to the contact surface of the structural members, the vibration exciter provides more stable and effective excitation force in the test process, and the effectiveness of the engineering test result is ensured;
2. the base in the hydraulic vibration exciter mounting device is provided with the arc-shaped slide way, the power end of the driving device drives the workbench to turn over along the arc-shaped slide way, the mounting and adjusting structure of the vibration exciter is optimized in the process of implementing vibration mode analysis on the structural member with large curvature change, the excited range of the vibration exciter is improved, the vibration exciter can generate exciting force on the hemispherical surface on the same height, and the stability and the persistence of the vibration exciter for applying exciting force to the structural member with large curvature change are ensured.
Drawings
FIG. 1 is a schematic perspective view of a hydraulic exciter mounting apparatus in accordance with an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the bracket assembly of FIG. 1;
FIG. 3 is a schematic perspective view of the fifth wheel assembly of FIG. 1;
Fig. 4 is a front view of fig. 3;
FIG. 5 is a schematic perspective view of a hydraulic prop;
fig. 6 is a schematic perspective view of a fixing post;
FIG. 7 is a schematic perspective view of a pipe clamp;
Fig. 8 is a schematic perspective view of a self-locking castor.
Reference numerals: the vibration exciter 1, the tray 2, the adjusting seat part 3, the hydraulic supporting column 4, the fixing column 5, the pipe clamp 6, the trundles 7, the flat plate 8, the screw 9, the nut 10, the gear pump 11, the workbench 12, the manual rocker 13, the base 14, the motor 15, the threaded hole 16, the limiting support 17, the arc-shaped positioning rack 18, the button 19, the scale plate 20, the first push rod 21, the second push rod 22, the spherical joint 23, the worm 24, the direct current motor 25, the arc-shaped slide 26 and the self-locking universal wheel 27.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
The hydraulic vibration exciter mounting device shown in fig. 1-8 is used for mounting and adjusting a vibration exciter in the process of carrying out vibration mode analysis on a structural member with large curvature change. The device is provided with a hydraulic system on the hydraulic support column, so that the range of the vibration exciter capable of being accurately excited is increased. Besides being capable of being adjusted at different heights and different horizontal positions, when the positions among the measuring points of the structural member are relatively close, the stroke of each hydraulic column can be changed as required, and a workbench in the mounting device can be adjusted, so that the contact point of the vibration exciter can accurately and conveniently reach the preset excitation position. The excitation direction of the vibration exciter is perpendicular to the contact surface of the structural member, so that the vibration exciter provides more stable and effective excitation force in the test process, and the validity of the engineering test result is ensured.
As shown in fig. 1, a hydraulic exciter mounting apparatus includes an adjustment seat member 3 and a bracket member. As shown in fig. 3, the saddle member 3 includes a driving device, a base 14, and a table 12 to which the tray 2 of the exciter 1 is connected. The base 14 is connected to the bracket member. The base 14 is provided with an arcuate slide 26 for sliding movement of the table 12. A pair of arcuate slides 26 are symmetrically distributed along the centerline of the base 14. An arcuate positioning rack 18 is disposed between a pair of arcuate slides 26. The bottom of the workbench 12 is provided with a limit support 17. The limit support 17 is provided with a limit gear. The limit gear is meshed with the arc-shaped positioning rack 18. The power end of the driving device is connected with the limit gear.
The power end of the driving device drives the workbench 12 to turn over along the arc-shaped slideway 26, so that the installation and adjustment structure of the vibration exciter 1 is optimized and the excitable range of the vibration exciter 1 is improved in the process of carrying out vibration mode analysis on a structural member with large curvature change. The vibration exciter 1 can generate exciting force on the hemispherical surface on the same height of the support component, and stability and continuity of the exciting force applied by the vibration exciter 1 to the structural component with large curvature change are ensured.
As shown in fig. 2, the bracket component includes a flat plate 8 and a hydraulic support column 4. A plate 8 is placed at the head end of the hydraulic prop 4. The base 14 is connected to the hydraulic support column 4 by a plate 8. As shown in connection with fig. 5, the hydraulic prop 4 has a first push rod 21 and a second push rod 22 for adjusting the height of the plate 8. The second push rod 22 is nested in the first push rod 21. The side wall of the hydraulic support column 4 is provided with a pump and an oil circuit integrated block. The tail end of the hydraulic support column 4 is provided with a castor 7.
Wherein the hydraulic support column 4 can be a telescopic hydraulic cylinder. The telescopic hydraulic cylinder is formed by assembling two or more piston type cylinder sleeves, and the piston of the front-stage piston cylinder is the cylinder barrel of the rear-stage piston. When pressure oil is introduced, the pistons sequentially extend from large to small; when the piston is retracted, the pistons are sequentially retracted from small to large. The pistons of each stage extend in sequence to obtain a long stroke, and the axial dimension of the cylinder is small when retracting in sequence.
For example, the maximum travel of the hydraulic support column 4 is 1.5m. Wherein the stroke of the first push rod 21 is 0.4m. The stroke of the second push rod 22 is 0.5m. The remaining travel is the center distance after full retraction. The outer diameter of each circular section is 30mm, 36mm and 42mm from top to bottom.
The pump may preferably be a gear pump 11. The gear pump 11 can be controlled in a remote control mode, when the height of the workbench 12 needs to be changed, the first push rod 21 and the second push rod 22 are lifted or lowered, and the contact point of the vibration exciter 1 is adjusted to an optimal excitation point at a low speed, so that the vibration excitation task is completed.
The oil way integration block is used for integrating the scattered hydraulic oil ways together, is convenient for controlling the work of hydraulic oil, and further realizes the control of the length of the hydraulic support column 4.
As shown in fig. 8, the castor 7 may alternatively be a self-locking castor 27. The setting is convenient for form the locking after vibration exciter 1 work frame removes the position on the adjustment horizontal plane, has further promoted the stability of support part.
As shown in fig. 5, the head end of the second push rod 22 is provided with a ball joint 23. The bottom of the plate 8 is provided with a spherical slot matching the spherical joint 23. The angle between the flat plate 8 and the support column is convenient to change, the support structure of the support component 3 is optimized for structural components with large curvature change, and the excitation direction of the vibration exciter 1 is more in line with actual requirements.
As shown in fig. 2, the bracket member has a plurality of hydraulic support columns 4. A fixed column 5 is arranged between the hydraulic support columns 4. The end of the fixed column 5 is connected with the hydraulic support column 4 through a pipe clamp 6. The middle part of the fixed column 5 is provided with a telescopic device for adjusting the length of the fixed column 5. So set up, the fixed column 5 of connection between many spinal branch daggers has improved the whole rigidity of support part greatly, is favorable to reducing the natural frequency of vibration exciter 1 work frame, and the vibration exciter 1 of being convenient for excites every measurement station on the structure of treating, and telescoping device is used for adjusting the length of fixed column 5, and then realizes the adjustment to the size of the contained angle that forms between each hydraulic support column 4, has further promoted the stability that vibration exciter 1 produced exciting force.
The hydraulic support columns 4 with proper number can be selected as the support components according to the actual test requirement. The number of hydraulic support columns 4 is preferably 3-5. As shown in fig. 2, the bracket component uses 4 hydraulic support columns 4 as a bottom support structure. And 1 fixing column 5 is connected between every two adjacent hydraulic support columns 4 for further improving the overall rigidity of the bracket component.
The pipe clamp 6 shown in fig. 7 comprises a first clamping part and a second clamping part. The side wall of the first clamping part is connected with the side wall of the second clamping part. The first clamping part is provided with a first clamping hole. The second clamping part is provided with a second clamping hole. The axis of the first clamping hole is perpendicular to the axis of the second clamping hole. The first clamping part and the second clamping part clamp the clamped component by means of locking fasteners. As shown in fig. 2, the pipe clamp 6 is connected to the fixing post 5 and the hydraulic support post 4 by means of a screw 9 and a nut 10.
As shown in fig. 6, the telescopic device is a dc motor 25. The left telescopic part of the fixed column 5 is connected with a direct current motor 25 through a worm 24. The right telescopic part of the fixed column 5 is connected with a direct current motor 25 through a worm 24. So set up, direct current motor 25 drives left telescopic part and right telescopic part simultaneously, realizes the two-way flexible to fixed column 5, is convenient for adjust the contained angle between each hydraulic support column 4. Meanwhile, the end part of each fixing column 5 is further provided with a limit switch, and when the limit switch is triggered by the contact pipe clamp, the direct current motor 25 automatically stops driving the fixing columns 5 to stretch out and draw back. In addition, the whole support part is of a detachable structure, and the support structure can be adjusted according to the practical conditions of the test. After the test is finished, the device can be disassembled into a plurality of parts, and is convenient to place and transport. For example, the operating voltage of the DC motor 25 is 24V, the thrust is 500N, and the expansion and contraction speed of the driving fixed column 5 is 12mm/s.
For example, when the placement area of the vibration exciter 1 is narrow, the bottoms of the plurality of hydraulic support columns 4 cannot be supported on the same plane, the length of the fixed column 5 can be adjusted through the direct current motor 25, the supporting position of the hydraulic support columns 4 can be adjusted, the specific stroke height of each hydraulic support column 4 can be changed, the vibration exciter 1 can be ensured to normally excite the measuring points, and stable excitation force can be generated.
As shown in fig. 3, the driving means may alternatively be a motor 15. The motor 15 is connected with the limit support 17 through a fixed seat. The power end of the motor 15 is connected with the limit gear. The base 14 is provided with a button 19 for controlling the motor 15. By means of the arrangement, the workbench 12 is driven by the motor 15 to conveniently adjust the overturning angle of the workbench 12 along the arc-shaped slideway 26, the excitation direction of the vibration exciter 1 can be adjusted rapidly, and the clamping and positioning difficulty of the vibration exciter 1 in the vibration mode analysis process is further reduced.
As shown in fig. 4, the driving means may also be selected as a manual rocker 13. The power end of the manual rocker 13 is connected with the limit gear. So set up, when motor 15 drive workstation 12 upset, also can realize the fine setting to workstation 12 flip angle through the mode of rotating manual rocker 13, further improved vibration exciter 1 mounted position's position precision, and then promoted the validity of test result.
As shown in fig. 3, the base 14 is provided with a scale plate 20. The scale plate 20 is provided with scale marks for marking the rotation angle of the workbench 12 along the arc-shaped slideway 26. The graduation marks are arranged on the graduation board 20 at equal intervals. By the arrangement, on one hand, the overturning position of the workbench 12 is more accurate; on the other hand, the turnover position of the workbench 12 is convenient to record, and the turnover position deviation can be corrected in time in the test process by taking the turnover position as a reference standard, so that the effectiveness of the test result is further improved.
The arc-shaped slideway 26 is an arc-shaped slideway 26. The arc-shaped positioning rack 18 is a circular arc-shaped positioning rack 18. After the height and the position of the workbench 12 are determined, the arc-shaped slideway 26 can limit the workbench 12 to rotate along the arc track, so that the vibration exciter 1 generates exciting force in a hemispherical surface, and the stability and the persistence of the exciting force applied by the vibration exciter 1 to a structural member with large curvature change are further ensured.
When the hydraulic vibration exciter mounting device provided by the embodiment of the invention is used, hydraulic support columns 4 with proper numbers are selected according to test requirements, support components of corresponding support structures are assembled, and the self-contained tray 2 of the vibration exciter 1 is connected with a workbench 12. When the workbench 12 reaches a specified position, the contact point of the vibration exciter 1 is adjusted to be abutted against the structural member. When the position of the excitation point changes, the hydraulic support column 4 is fixed again at the position where the height is needed by adjusting the travel, the vertical height of the vibration exciter 1 is changed, and the vibration excitation task is completed for the new excitation point. When the structural member is a curved surface, the relative angle between the vibration exciter 1 and the horizontal plane needs to be adjusted, the manual rocker 13 is rotated according to the scale plate 20 on the base 14, the overturning angle of the workbench 12 is accurately adjusted, and after the required position is reached, the workbench 12 is locked, so that the excitation direction of the vibration exciter 1 is relatively vertical to the surface of the structural member, and an effective excitation force is generated. When the position of the excitation point is required to be accurately adjusted, the first push rod 21 of the hydraulic support column 4 is driven by the pump, so that the vibration exciter 1 is rapidly close to the excitation point, and the second push rod 22 of the hydraulic support column 4 is driven by the pump, so that the vibration exciter 1 accurately reaches the preset excitation point.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be provided in addition to the above embodiments. Any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art, which are within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.

Claims (8)

1. The hydraulic vibration exciter mounting device is characterized by comprising an adjusting seat component and a bracket component;
The adjusting seat part comprises a driving device, a base and a workbench for connecting a tray of the vibration exciter, wherein the base is connected with the bracket part, an arc slideway for sliding the workbench is arranged on the base, a pair of arc slideways are symmetrically distributed along the central line of the base, an arc positioning rack is arranged between the pair of arc slideways, a limiting support is arranged at the bottom of the workbench, a limiting gear is arranged on the limiting support, the limiting gear is meshed with the arc positioning rack, and the power end of the driving device is connected with the limiting gear;
The support component comprises a flat plate and a hydraulic support column, the flat plate is arranged at the head end of the hydraulic support column, the base is connected with the hydraulic support column through the flat plate, the hydraulic support column is provided with a first push rod and a second push rod for adjusting the height of the flat plate, the second push rod is nested in the first push rod, a pump and an oil circuit integrated block are arranged on the side wall of the hydraulic support column, and the tail end of the hydraulic support column is provided with casters;
The support component is provided with a plurality of hydraulic support columns, fixing columns are arranged between the hydraulic support columns, the end parts of the fixing columns are connected with the hydraulic support columns through pipe clamps, and a telescopic device for adjusting the length of the fixing columns is arranged in the middle of each fixing column;
the hydraulic support columns are adjusted at different heights and different horizontal positions, when the positions between the measuring points of the structural members are relatively close, the stroke of each hydraulic support column is changed as required, and the workbench in the installation device is adjusted, so that the contact point of the vibration exciter reaches a preset excitation position and is mutually perpendicular to the contact surface of the structural member, the rotating axis of the tray is mutually perpendicular to the overturning axis of the workbench, and the vibration exciter is excited in a hemispherical range.
2. The hydraulic exciter mounting apparatus of claim 1, wherein the head end of the second pushrod is provided with a ball joint, and the bottom of the flat plate is provided with a ball slot that mates with the ball joint.
3. The hydraulic vibration exciter mounting apparatus of claim 1, wherein the telescoping device is a dc motor, the left telescoping portion of the stationary post is coupled to the dc motor by a worm, and the right telescoping portion of the stationary post is coupled to the dc motor by a worm.
4. The hydraulic vibration exciter mounting device according to claim 1, wherein the driving device is a motor, the motor is connected with the limit support through a fixing seat, the power end of the motor is connected with the limit gear, and a button for controlling the motor is arranged on the base.
5. The hydraulic exciter mounting apparatus of claim 1, wherein the drive means is a manual rocker, and wherein a power end of the manual rocker is coupled to the limit gear.
6. The hydraulic vibration exciter mounting device according to claim 1, wherein the base is provided with a scale plate, the scale plate is provided with scale marks for marking the rotation angle of the workbench along the arc-shaped slideway, and the scale marks are arranged on the scale plate at equal intervals.
7. The hydraulic exciter mounting apparatus of claim 1, wherein the caster is a self-locking caster.
8. The hydraulic exciter mounting apparatus of claim 1, wherein the arcuate chute is a circular arc chute and the arcuate locating rack is a circular arc locating rack.
CN202110921375.1A 2021-08-11 2021-08-11 Hydraulic vibration exciter mounting device Active CN113653918B (en)

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KR19990033172A (en) * 1997-10-23 1999-05-15 정몽규 Jig for mounting tester
JP2006064404A (en) * 2004-08-24 2006-03-09 Mitsubishi Electric Corp Excitation testing apparatus
CN202868237U (en) * 2012-10-11 2013-04-10 奇瑞汽车股份有限公司 Exciter mounting base
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CN213068199U (en) * 2020-09-03 2021-04-27 广州汽车集团股份有限公司 Rigid body modal testing device for power assembly
CN213632591U (en) * 2020-09-29 2021-07-06 江西金科力实业有限公司 Vibration exciter fixing device

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