CN108071735B - One kind starting machine testing vibration-free tables - Google Patents
One kind starting machine testing vibration-free tables Download PDFInfo
- Publication number
- CN108071735B CN108071735B CN201711389519.3A CN201711389519A CN108071735B CN 108071735 B CN108071735 B CN 108071735B CN 201711389519 A CN201711389519 A CN 201711389519A CN 108071735 B CN108071735 B CN 108071735B
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- piston
- supporing shell
- piston rod
- oilhole
- machine testing
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention belongs to engine detection technique fields, it specifically discloses one kind and starts machine testing vibration-free tables, including rack, supporing shell is installed on rack, hydraulic oil is filled in supporing shell, piston is slidably connected in supporing shell, the first oilhole is offered on piston, the side of piston offers extruded hole, it is equipped with elastic piece on the inside of extruded hole, slidably connects tapered bar in piston, the top surface of piston is fixedly connected with piston rod, sliding is provided with mandril in piston rod, and mandril bottom is equipped with the inclined-plane cooperated with the tapered bar；Bottom is installed with magnetic board in the supporing shell, and iron powder is contained in hydraulic oil, and the inner wall of piston is equipped with the switch for controlling magnetic board power on/off；It is wound with spring outside the piston rod, the spring one end is fixed on piston rod top end, the other end is fixed on supporing shell top, and the second elastic component is connected between piston rod top end and mandril top.The present invention has the advantages that long service life.
Description
Technical field
The present invention relates to engine detection technique fields, and in particular to one kind starts machine testing vibration-free tables.
Background technique
When detection to vehicle motor, usually engine is mounted on rack, then by engine crankshaft
Flywheel end be connected with the main shaft of the detection machine on rack, detected by detection machine engine operation when indices.
When due to engine operation, reciprocating motion of the piston in cylinder, the burning and other fortune of cylinder fuel
Dynamic component will cause engine strenuous vibration with the movement of piston rod.If engine is directly connected on rack, can make
Rack also and then shakes, and the conduction of vibration can make the very serious of engine scuffing, and then shorten the service life of engine, therefore
Some effective ways must be taken to reduce vibration.Traditional engine reduces vibration using elastic bearing, in engine foundation
Resilient cushion is set between rack, resilient cushion in the vertical direction can good absorption engine vibration, vibration-absorbing pad structure letter
It is single, at low cost, but resilient cushion subjects the extruding of the vertical directions such as engine dry weight and operation vibration, upper compression in the horizontal direction
Deformation excessively, easily leads to resilient cushion aging, fracture, thus the service life of resilient cushion is usually all shorter.
Summary of the invention
With long service life start machine testing vibration-free tables the purpose of the present invention is to provide a kind of.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
One kind starting machine testing vibration-free tables, including rack, and supporing shell, the supporing shell are installed on the rack
It is interior to be filled with hydraulic oil, piston, and the inner wall clearance fit of piston and supporing shell, institute are slidably connected in the supporing shell
It states and offers several the first oilholes passed through for hydraulic oil on piston, the side of piston offers several extruded holes, squeezes
It is equipped with elastic piece on the inside of hole, slidably connects tapered bar in piston, the first elastic component is connected between tapered bar and piston inner wall, piston
Top surface is fixedly connected with piston rod, and the through-hole passed through for the piston rod is provided at the top of support column, and sliding is provided in piston rod
Mandril, mandril bottom are equipped with the inclined-plane cooperated with the tapered bar；Bottom is installed with magnetic board in the supporing shell, in hydraulic oil
Containing iron powder, the inner wall of piston is equipped with the switch for controlling magnetic board power on/off；It is wound with spring outside the piston rod, institute
State that spring one end is fixed on piston rod top end, the other end is fixed on supporing shell top, between piston rod top end and mandril top
It is connected with the second elastic component.
The working principle of this programme is:
Supporing shell is used to support engine, and when engine vibrates, engine can be moved back and forth vertically, when
When engine travels upward and out piston rod, band piston moves upwards in supporing shell, and when due to piston motion, piston is squeezed
The hydraulic oil above it is pressed, the hydraulic oil of top is entered in the supporing shell below piston by the first oilhole on piston, liquid
One downward active force of piston is awarded when pressure oil moves downward, in addition hydraulic oil also awards piston when piston press hydraulic oil
One downward reaction force, is hindered piston upwards, thus piston can be transported slowly upwards in supporing shell
Dynamic, piston driving piston rod also slowly moves upwards, to achieve the effect that damping.
After engine travels upward and out piston rod top end, mandril is upward relative to piston rod under the effect of the second elastic component
It moves, the inclined-plane on piston rod gives tapered bar one extruding force, moves tapered bar towards the direction close to piston side wall, squeezes and lives
The elastic portion on side wall is filled in, increases the frictional force between elastic portion and supporing shell inner wall, piston is more difficult to be moved upwards.
When tapered bar moves, touching switch, magnetic board is powered, the iron powder in hydraulic oil by the magnetic attraction from magnetic board and
It moves downward, the intracorporal hydraulic oil of entire supporting shell is made to have the tendency that moving downward, award one downward active force of piston, make
Piston is more difficult to be moved upwards.
Following technical effect can be reached using this programme:
1, hydraulic oil when passing through piston upwards above piston moves increasing to the extruding force of piston, tapered bar in piston
The absorption of frictional force and magnetic board to iron powder in hydraulic oil between strong piston side wall and supporing shell, three, which cooperates, to be realized
Damping effect reaches damping effect, piston, hydraulic oil and the iron powder energy in supporing shell using resilient cushion instead of tradition
Enough circulations repeatedly move, long service life, and good damping effect；
2, the power on/off of magnetic board is triggered by tapered bar movement, and when tapered bar moves, magnetic board can be simultaneously to liquid
Iron powder in pressure oil is adsorbed, and piston is more difficult to be moved upwards, thus damping effect is more preferable.
Further, several elastomeric iris are equipped between magnetic board and piston, the switch is electrically connected with elastomeric iris, electricity
Also several the second oilholes passed through for hydraulic oil are offered on magnetic partition, stainless steel plate is posted in elastomeric iris lower end surface, stainless
The third oilhole being aligned with the second oilhole is provided on steel plate.Only when magnetic board is arranged in supporing shell bottom, close to magnetic board
Iron powder be easier to be adsorbed on magnetic board, and be not easy to be adsorbed on magnetic board apart from the farther away iron powder of magnetic board,
Elastomeric iris energy will be apart from the farther away iron powder adsorption of magnetic board to thereon, and stainless steel plate can shield the generation of elastomeric iris lower end surface
Magnetic induction line avoids elastomeric iris that from being located on the iron powder adsorption under it, that is, avoids iron powder and move upwards.
Further, the second oilhole is overlapped with the center of circle of third oilhole, and third oilhole diameter is less than the second oilhole.Using this
The structure of kind elastomeric iris and stainless steel plate, stainless steel plate can block elastomeric iris thereon completely, shield the effect of magnetic induction line
More preferably.
Further, piston rod top end is equipped with support plate.Support plate can increase the stress between piston rod top end and engine
Area avoids piston rod from damaging engine surface.
Further, upper end face of support plate posts rubber pad.Rubber pad can absorb certain shock energy, further enhance damping
Effect.
Further, supporing shell inner top also is provided with additional electrical magnetic sheet.Iron powder in hydraulic oil is due to self gravitation effect
With the suction-operated of bottom magnetic board in supporing shell, it may occur that deposition, additional electrical magnetic sheet keep iron powder upward for adsorbing iron powder
The phenomenon that moving and reducing iron powder deposition, and when iron powder moves upwards, is also avoided that iron powder blocks the first oilhole, the second oilhole
With third oilhole.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Below by the further details of explanation of specific embodiment:
Appended drawing reference in Figure of description includes: supporing shell 1, piston 2, the first oilhole 21, elastic piece 22, piston rod
3, mandril 4, second spring 41, elastomeric iris 5, the second oilhole 51, stainless steel plate 6, third oilhole 61, tapered bar 7, the first spring
71, triggering block 81, switch 82, magnetic board 9, additional electrical magnetic sheet 10, support plate 11, rubber pad 12.
As shown in Figure 1, the present embodiment starts machine testing vibration-free tables, including rack, supporing shell 1 is installed on rack
It is used to support engine, hydraulic oil is filled in supporing shell 1, piston 2, and piston 2 and branch are slidably connected in supporing shell 1
The inner wall clearance fit of shell 1 is supportted, offers multiple the first oilholes 21 passed through for hydraulic oil on piston 2, the side of piston 2 is opened
If three extruded holes are circumferential uniformly distributed along piston 2 there are three extruded hole, the elastic piece 22 that rubber is made into is equipped on the inside of extruded hole, it is living
It is opened up in plug 2 there are three sliding groove, sliding groove is radially extended along piston 2, and tapered bar 7, wedge are slidably connected in each sliding groove
It is connected with the first spring 71 between 2 inner wall of bar 7 and piston to reset for tapered bar 7, the top surface of piston 2 is integrally formed with piston rod 3, branch
It is provided with the through-hole passed through for piston rod 3 at the top of support shell 1, a round through slot is offered in piston rod 3, round through slot is along piston
Bar 3 is axially extending, and sliding is provided with mandril 4, and 4 bottom of mandril is equipped with the inclined-plane cooperated with tapered bar 7.
Bottom is fixedly installed with one piece of magnetic board 9 in supporing shell 1, and iron powder is contained in hydraulic oil, is set on the inner wall of piston 2
There is the switch 82 for controlling 9 power on/off of magnetic board, tapered bar 7 is equipped with the triggering block 81 for capableing of trigger switch 82, triggering block 81
Side positioned at switch 82 far from 1 inner wall of supporing shell.1 inner top of supporing shell is equipped with one piece of additional electrical magnetic sheet 10.
3 top of piston rod is equipped with support plate 11, and rubber pad 12 is posted in 11 upper surface of support plate.Support plate 11 and mandril 4 push up
It is connected with second spring 41 between end, third spring 34 is wound with outside piston rod 3,34 upper end of third spring is fixed on the top of piston rod 3
End, lower end are fixed on 1 top of supporing shell.
It is set between magnetic board 9 and piston 2 there are two elastomeric iris 5, switch 82 is electrically connected with elastomeric iris 5, elastomeric iris 5
On offer multiple the second oilholes 51 passed through for hydraulic oil, stainless steel plate 6 is posted in 5 lower end surface of elastomeric iris, on stainless steel plate 6
It is provided with the third oilhole 61 being aligned with the second oilhole 51, the second oilhole 51 is overlapped with the center of circle of third oilhole 61, and third oilhole
61 diameters are less than 51 diameter of the second oilhole.
The present embodiment starts machine testing vibration-free tables, and specific work process is as follows: when engine vibrates, starting
Chance vertically moves back and forth, and after engine travels upward and out piston rod 3, piston rod 3 loses engine to its pressure
Power and move upwards, band piston 2 moved upwards in supporing shell 1, due to piston 2 move when, piston 2 squeeze its above
Hydraulic oil, hydraulic oil also award 2 one downward reaction forces of piston, and the hydraulic oil of top passes through the first oilhole on piston 2
21 enter in the supporing shell 1 of 2 lower section of piston, and piston 2, which moves upwards, to be hindered, thus piston 2 can in supporing shell 1
It slowly moves upwards, piston 2 drives piston rod 3 also slowly to move upwards, to achieve the effect that damping.Since engine is upward
After moving from 3 top of piston rod, mandril 4 loses the pressure of engine, and mandril 4 is under the effect of the second elastic component relative to piston
Bar 3 moves upwards, and tapered bar 7 one extruding forces towards 2 inner wall of piston are given on the inclined-plane on piston rod 3, makes tapered bar 7 towards close
The direction of 2 side wall of piston moves, and the elastic piece 22 on 2 side wall of extrusion piston makes between 1 inner wall of elastic piece 22 and supporing shell
Frictional force increases, and piston 2 is more difficult to be moved upwards.When tapered bar 7 moves, 81 touching switch 82 of triggering block on tapered bar 7, electromagnetism
Plate 9 and two pieces of elastomeric iris 5 are powered, and the iron powder in hydraulic oil is by the magnetic attraction from magnetic board 9 and two pieces of elastomeric iris 5
And move downward, the second oilhole 51 on elastomeric iris 5 and the third oilhole 61 on stainless steel plate 6, make entire supporting shell
Hydraulic oil in body 1 has the tendency that moving downward, and awards 2 one downward active forces of piston, makes the more difficult upward fortune of piston 2
It is dynamic, since the stainless steel plate 6 on 5 lower end surface of elastomeric iris can shield the magnetic induction line of 5 lower end surface of elastomeric iris generation, avoid electricity
Magnetic partition 5 will be located on the iron powder adsorption under it, that is, avoids iron powder and move upwards.Since piston 2 and piston rod 3 are transported upwards
It is dynamic relatively slower, thus piston rod 3 will not achieve the effect that damping there is a phenomenon where frequent vibration.When in supporing shell 1
Iron powder when depositing, the phenomenon that being powered to additional electrical magnetic sheet 10, move upwards iron powder and reduce iron powder deposition, Er Qietie
Also it is avoided that iron powder blocks the first oilhole 21, the second oilhole 51 and third oilhole 61 when powder moves upwards.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (6)
1. one kind starts machine testing vibration-free tables, including rack, it is characterised in that: be installed with supporing shell, institute on the rack
It states and is filled with hydraulic oil in supporing shell, slidably connect piston, and the inner wall of piston and supporing shell in the supporing shell
Clearance fit offers several the first oilholes passed through for hydraulic oil on the piston, and the side of piston offers several
Extruded hole, extruded hole inside are equipped with elastic piece, slidably connect tapered bar in piston, the first bullet is connected between tapered bar and piston inner wall
Property part, the top surface of piston is fixedly connected with piston rod, the through-hole passed through for the piston rod, piston rod is provided at the top of supporing shell
Interior sliding is provided with mandril, and mandril bottom is equipped with the inclined-plane cooperated with the tapered bar；Bottom is installed with electricity in the supporing shell
Magnetic sheet, iron powder is contained in hydraulic oil, and the inner wall of piston is equipped with the switch for controlling magnetic board power on/off；Outside the piston rod
Be wound with spring, the spring one end is fixed on piston rod top end, the other end is fixed on supporing shell top, piston rod top end with
The second elastic component is connected between mandril top.
2. one kind according to claim 1 starts machine testing vibration-free tables, it is characterised in that: the magnetic board and piston it
Between be equipped with several elastomeric iris, the switch is electrically connected with elastomeric iris, also offered on elastomeric iris several supply it is hydraulic
Stainless steel plate is posted in the second oilhole that oil passes through, elastomeric iris lower end surface, and be aligned with the second oilhole is provided on stainless steel plate
Three oilholes.
3. one kind according to claim 2 starts machine testing vibration-free tables, it is characterised in that: second oilhole and third
The center of circle of oilhole is overlapped, and third oilhole diameter is less than the second oilhole.
4. one kind according to claim 3 starts machine testing vibration-free tables, it is characterised in that: the piston rod top end is equipped with
Support plate.
5. one kind according to claim 4 starts machine testing vibration-free tables, it is characterised in that: the upper end face of support plate patch
There is rubber pad.
6. one kind according to claim 5 starts machine testing vibration-free tables, it is characterised in that: the supporing shell inner top
It also is provided with additional electrical magnetic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711389519.3A CN108071735B (en) | 2017-12-21 | 2017-12-21 | One kind starting machine testing vibration-free tables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711389519.3A CN108071735B (en) | 2017-12-21 | 2017-12-21 | One kind starting machine testing vibration-free tables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071735A CN108071735A (en) | 2018-05-25 |
| CN108071735B true CN108071735B (en) | 2019-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711389519.3A Active CN108071735B (en) | 2017-12-21 | 2017-12-21 | One kind starting machine testing vibration-free tables |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102732A (en) * | 2011-03-21 | 2011-06-22 | 东南大学 | Leakage-free fluid damper |
| CN202500943U (en) * | 2012-03-12 | 2012-10-24 | 宁波南方减震器制造有限公司 | Hydraulic damper |
| CN102979849A (en) * | 2012-12-13 | 2013-03-20 | 浙江师范大学 | Active-type piezoelectric hydraulic damper |
| CN104603496A (en) * | 2012-11-16 | 2015-05-06 | 萱场工业株式会社 | Piston |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7217372B2 (en) * | 2000-05-03 | 2007-05-15 | Lord Corporation | Magnetorheological composition |
-
2017
- 2017-12-21 CN CN201711389519.3A patent/CN108071735B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102732A (en) * | 2011-03-21 | 2011-06-22 | 东南大学 | Leakage-free fluid damper |
| CN202500943U (en) * | 2012-03-12 | 2012-10-24 | 宁波南方减震器制造有限公司 | Hydraulic damper |
| CN104603496A (en) * | 2012-11-16 | 2015-05-06 | 萱场工业株式会社 | Piston |
| CN102979849A (en) * | 2012-12-13 | 2013-03-20 | 浙江师范大学 | Active-type piezoelectric hydraulic damper |
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| Publication number | Publication date |
|---|---|
| CN108071735A (en) | 2018-05-25 |
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Effective date of registration: 20200408 Address after: Room 1,020, Nanxun Science and Technology Pioneering Park, No. 666 Chaoyang Road, Nanxun District, Huzhou City, Zhejiang Province, 313000 Patentee after: Huzhou You Yan Intellectual Property Service Co.,Ltd. Address before: 400000 Chongqing Jiulongpo District, Chongqing New Road No. 176, No. 5 negative layer Patentee before: CHONGQING HOUQUAN TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Effective date of registration: 20211129 Address after: 251100 room 402, complex building, No. 192, Qifa Avenue, economic development zone, Qihe County, De Zhou City, Shandong Province Patentee after: Qihe Zhigu Industrial Development Co.,Ltd. Address before: 313000 room 1020, science and Technology Pioneer Park, 666 Chaoyang Road, Nanxun Town, Nanxun District, Huzhou, Zhejiang. Patentee before: Huzhou You Yan Intellectual Property Service Co.,Ltd. |
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