CN203587307U - Mechanical table of continuously-adjustable amplitude - Google Patents
Mechanical table of continuously-adjustable amplitude Download PDFInfo
- Publication number
- CN203587307U CN203587307U CN201320614623.9U CN201320614623U CN203587307U CN 203587307 U CN203587307 U CN 203587307U CN 201320614623 U CN201320614623 U CN 201320614623U CN 203587307 U CN203587307 U CN 203587307U
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- lever
- cam
- slide unit
- base
- connecting rod
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Abstract
The utility model provides a mechanical table of a continuously-adjustable amplitude. The mechanical table is composed of a pedestal, a leading screw, a sliding table, a cam, a motor, a table surface, a connecting rod, an extension spring, a lower supporting point, a lever and a push rod. The mechanical table is driven by the motor, and drives the lever to swing through a cam mechanism. The lower supporting point, the cam, the push rod and the lever form a lever mechanism. The lower supporting point serves as a supporting point of the lever mechanism. A power arm starts from the cam the supporting point. A resisting arm starts from the push rod to the supporting point. The leasing screw rotates to drive the sliding table to move on a rail on the pedestal and to drive the lower supporting point, the motor, the cam and the lever on the sliding table to move. The position of the push rod relative to the lever, namely the length of the resisting arm of the lever mechanism, can be changed, so that a function of adjusting the amplitude of the shaker is achieved.
Description
Technical field
The utility model relates to a kind of mechanical shaker structure, particularly, refers to the continuously adjustable mechanical shaker of a kind of amplitude.
Background technology
Shaking table is applicable to, on the industry laboratories such as auto parts and components, electronic devices and components, assembly, medicine, food, furniture, gift, pottery, packing and production line, sample is carried out to coupled vibration test.As environment acceptance test, Quality Identification test, reliability compliance test, long duration test, vibration simulation analysis, material behavior test, torture test, vibration prevents improvement etc.The vibration environment that analog equipment suffers in manufacture, assembling, transportation and use procedure, to evaluate resistance to vibration, reliability and the integrity of its structure.
Shaking table, according to its power resources, mainly can be divided into mechanical shaker, electrohydraulic shaker and electrodynamic vibration shaker three classes.Wherein, mechanical shaker is simple in structure, with low cost.According to concrete structure, mechanical shaker can be divided into again uneven pouring weight formula and cam-type two classes.
Uneven pouring weight formula is that the centrifugal force producing during with uneven pouring weight rotation carrys out exciting vibration table surface, square being directly proportional of exciting force and unbalanced moments and rotating speed.This shaking table can produce sinusoidal vibration, and it is simple in structure, and cost is low, but its amplitude is relevant with the power system characteristic of spring and table top composition, can not arbitrarily regulate.
The lift of cam or the brachium of bent axle are depended in the displacement of cam-type or eccentric wheel type shaking table motion parts, and exciting force changes with the quality of motion parts.This shaking table, in lower frequency region, when exciting force is large, can be realized very large displacement.But the amplitude of common cam-type shaking table is determined by cam lift, can not arbitrarily regulate; Although some eccentric wheel type shaking table can adjusting amplitude, must shut down and adjust crank position or eccentric throw, can not regulate continuously.
For above problem, the utility model proposes the continuously adjustable mechanical shaker of a kind of amplitude, its amplitude to adjustable continuously between cam lift, and can not shut down adjustment 0 in the course of the work.
Summary of the invention
Content of the present utility model is to provide the continuously adjustable mechanical shaker structure of a kind of amplitude.This mechanical shaker is driven by motor, and by cam mechanism driving lever swing, the table top of lever and then driving shaking table produces vibration.By adjusting the position of table top with respect to lever, can change the length of lever resistance arm, thereby play the effect that regulates shaking table amplitude.
The utility model is the continuously adjustable mechanical shaker of a kind of amplitude, by base, and leading screw, slide unit, cam, motor, table top, connecting rod, extension spring, lower fulcrum, lever and push rod composition.The track that middle part above base has a groove to form, slide unit bottom embeds this groove, can be along rail moving.The two ends of leading screw are fixed on the two ends of base groove, and form revolute pair, can rotate along self axis.Leading screw passes slide unit, and forms screw thread pair with the internal thread in the middle of slide unit.When leading screw rotates, slide unit can move along the guide rail on base.Lower fulcrum and motor are arranged on slide unit, are all connected with slide unit, can move with slide unit.Cam is arranged on the axle of motor, can rotate along with the rotation of motor.Lever one end is placed on lower fulcrum, and the pinnacle at the groove on it and lower fulcrum top forms a revolute pair; The other end is placed on cam.Table top is connected with base by 4 connecting rods.Connecting rod has 2 groups 4, and they are equal in length, and direction is parallel, forms two groups of parallelogram lindages.Push rod is fixed on the bottom of table top, and the pinnacle of its bottom contacts with lever.When table top moves, due to the constraint of parallelogram lindage that is subject to connecting rod and forms, its motion keeps translation, and direction does not change.Extension spring lower end is fixed on the hinge of base and connecting rod, and upper end is fixed on the hinge of table top and connecting rod, and table top is pulled to base direction.
The continuously adjustable mechanical shaker advantage of amplitude described in the utility model is, its amplitude to adjustable continuously between cam lift, and can not shut down adjustment 0 in the course of the work.
Accompanying drawing explanation
Fig. 1 is the overall construction drawing of the continuously adjustable mechanical shaker of a kind of amplitude.
Fig. 2 is the structural drawing of removing after table top 6.
Fig. 3 only retains table top 6, push rod 11, the structural drawing after connecting rod 7 upset.
In figure: 1. base 2. leading screw 3. slide unit 4. cam 5. motor 6. table top 7. connecting rod 8. extension spring 9. lower fulcrums
10. lever 11. push rods
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Shown in Figure 1, the utility model is the continuously adjustable mechanical shaker of a kind of amplitude, by base 1, and leading screw 2, slide unit 3, cam 4, motor 5, table top 6, connecting rod 7, extension spring 8, lower fulcrum 9, and (shown in Figure 2) lever 10 and push rod 11 form.
The track that base 1 middle part above has a groove to form, slide unit 3 bottoms embed this groove, can be along rail moving.The two ends of leading screw 2 are fixed on the two ends of base 1 groove, and form revolute pair, can rotate along self axis.Leading screw 2 passes slide unit 3, and forms screw thread pair with the internal thread in the middle of slide unit 3.When leading screw 2 rotates, slide unit 3 can move along the guide rail on base 1.
Shown in Figure 2, lower fulcrum 9 and motor 5 are arranged on slide unit 3, are all connected with slide unit, can move with slide unit.Cam 4 is arranged on the axle of motor 5, can rotate along with the rotation of motor 5.Lever 10 one end are placed on lower fulcrum 9, and the pinnacle at the groove on it and lower fulcrum 9 tops forms a revolute pair; The other end is placed on cam 4.
Shown in Fig. 3 and Fig. 2, table top 6 is connected with base 1 by 4 connecting rods 7.Connecting rod 7 has 2 groups 4, and they are equal in length, and direction is parallel, forms two groups of parallelogram lindages.Push rod 11 is fixed on the bottom of table top 6, and the pinnacle of its bottom contacts with lever 10.
When table top 6 moves, owing to being subject to the constraint of the parallelogram lindage that connecting rod 7 forms, its motion keeps translation, and direction does not change.
During work, motor 5 rotates, and cam 4 activation lever 10 swing up and down, and lever 10 drives again push rod 11 and table top 6 to move up and down.Under the constraint of connecting rod 7, table top 6 only can do upper and lower translation, and its track is one section of circular arc take connecting rod 7 length as radius.When length of connecting rod is during much larger than table top motion amplitude, this section of circular arc can be approximately straight-line segment.Extension spring 8 is played force-closed effect to the motion of table top 6.
In the time of need to regulating table top amplitude, rotational lead screw 2, drives slide unit 3 along the rail moving on base 1, drive the lower fulcrum 9 on slide unit 3 simultaneously, motor 5, cam 4 and lever 10 move, thereby change the relative position of push rod 11 on lever 10, be equivalent to change the resistance arm length of leverage.When push rod 11 is positioned at the position relative with lower fulcrum 9, the swing of lever can not cause the motion of push rod 11, and now the amplitude of table top 6 is 0.When push rod 11 is positioned at the position relative with cam 4, the amplitude of table top equals the lift of cam 4, now amplitude maximum.
Claims (3)
1. the continuously adjustable mechanical shaker of amplitude, it is characterized in that: by base, leading screw, slide unit, cam, motor, table top, connecting rod, extension spring, lower fulcrum, lever, form with push rod, there is a groove at middle part above described base, described slide unit bottom embeds described in this groove and can move along described groove, the two ends of described leading screw are fixed on the two ends of described base groove, and form revolute pair, described leading screw can rotate along self axis, described leading screw is through described slide unit, and form screw thread pair with the internal thread in the middle of described slide unit, when described leading screw rotates, described slide unit can move along the guide rail on described base, described lower fulcrum and described motor are arranged on described slide unit, all be connected with described slide unit, described cam is arranged on the axle of described motor, can rotate along with the rotation of described motor, one end of described lever is placed on described lower fulcrum, the pinnacle at the groove on described lever and the top of described lower fulcrum forms a revolute pair, the other end of described lever is placed on described cam, described table top is connected with described base by 4 described connecting rods, described connecting rod has 2 groups totally 4, the identical length of described connecting rod etc., direction is parallel, form two groups of parallelogram lindages, described push rod is fixed on the bottom of described table top, and the pinnacle of its bottom contacts with described lever, the lower end of described extension spring is fixed on the hinge of described base and described connecting rod, and the upper end of described extension spring is fixed on the hinge of described table top and described connecting rod.
2. shaking table according to claim 1, is characterized in that: described table top, described connecting rod and described base form two groups of parallelogram lindages.
3. shaking table according to claim 1, it is characterized in that: described lower fulcrum, described cam, described push rod and described lever form a leverage, wherein, described lower fulcrum is as the fulcrum of described leverage, described cam is to being power arm between described fulcrum, described push rod is to being resistance arm between described fulcrum, rotate described leading screw, drive described slide unit along the rail moving on base, drive the described lower fulcrum on described slide unit, described motor, described cam and described lever to move simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614623.9U CN203587307U (en) | 2013-10-08 | 2013-10-08 | Mechanical table of continuously-adjustable amplitude |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614623.9U CN203587307U (en) | 2013-10-08 | 2013-10-08 | Mechanical table of continuously-adjustable amplitude |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587307U true CN203587307U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320614623.9U Expired - Fee Related CN203587307U (en) | 2013-10-08 | 2013-10-08 | Mechanical table of continuously-adjustable amplitude |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203587307U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155074A (en) * | 2014-08-26 | 2014-11-19 | 福建省天大精诺信息有限公司 | Adjustable three-dimensional vibration platform |
| CN104515662A (en) * | 2013-10-08 | 2015-04-15 | 郑州大学 | Amplitude continuously adjustable mechanical shaker |
| CN107014578A (en) * | 2017-04-06 | 2017-08-04 | 内蒙古工业大学 | Analogue experiment installation and its experimental method that vehicle influences on bridge floor cast-in-place concrete |
| CN108115755A (en) * | 2018-01-05 | 2018-06-05 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
-
2013
- 2013-10-08 CN CN201320614623.9U patent/CN203587307U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515662A (en) * | 2013-10-08 | 2015-04-15 | 郑州大学 | Amplitude continuously adjustable mechanical shaker |
| CN104155074A (en) * | 2014-08-26 | 2014-11-19 | 福建省天大精诺信息有限公司 | Adjustable three-dimensional vibration platform |
| CN104155074B (en) * | 2014-08-26 | 2016-05-04 | 福建省天大精诺信息有限公司 | A kind of adjustable 3 D stereo shaking platform |
| CN107014578A (en) * | 2017-04-06 | 2017-08-04 | 内蒙古工业大学 | Analogue experiment installation and its experimental method that vehicle influences on bridge floor cast-in-place concrete |
| CN108115755A (en) * | 2018-01-05 | 2018-06-05 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
| CN108115755B (en) * | 2018-01-05 | 2019-06-25 | 南京工程学院 | A kind of mechanical torsional oscillation platform based on lever and cam mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20141008 |
|
| EXPY | Termination of patent right or utility model |