CN103245493A - Bending moment resistance testing device for frictionless cylinder - Google Patents
Bending moment resistance testing device for frictionless cylinder Download PDFInfo
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- CN103245493A CN103245493A CN2013101249125A CN201310124912A CN103245493A CN 103245493 A CN103245493 A CN 103245493A CN 2013101249125 A CN2013101249125 A CN 2013101249125A CN 201310124912 A CN201310124912 A CN 201310124912A CN 103245493 A CN103245493 A CN 103245493A
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- ferromagnet
- friction cylinder
- electromagnet
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- seat
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- 238000005452 bending Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 title abstract description 9
- 238000005188 flotation Methods 0.000 claims abstract description 8
- 230000003028 elevating effect Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 15
- 229910000805 Pig iron Inorganic materials 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention provides a bending moment resistance testing device for a frictionless cylinder. The bending moment resistance testing device comprises a frame, a ferromagnet, a flotation pad, an electromagnet and a force sensor, wherein the rodless cavity side of the frictionless cylinder is fixed on the frame; a piston rod of the frictionless cylinder is placed upwards; the ferromagnet is mounted at the upper end of the piston rod in a sleeving way; the flotation pad is mounted on a lifting mechanism and concentric with the ferromagnet; the flotation pad is positioned on the ferromagnet, and the flotation pad and the ferromagnet are in air floating connection therebetween; the lifting mechanism is mounted on the frame; the electromagnet is connected with the force sensor; the force sensor is connected with the lifting mechanism; the electromagnet is just opposite to the ferromagnet; a flotation pad air feeding port is formed in the lifting mechanism; and an air inlet hole of the frictionless cylinder is formed in a base. According to the invention, the force loading mechanism is not contacted with the piston rod directly, so that dynamic measurement is realized, detection accuracy is high, and operation is convenient.
Description
Technical field
The present invention relates to a kind of nothing friction cylinder field tests, especially a kind of nothing friction cylinder bending resistance detection range.
Background technology
Along with modern industry and high-tech develop rapidly, the gas bearing technology is used widely, and it is to replace oil as lubricant with gas, constitutes air film between axle and bearing holder (housing, cover), makes active face and stationary face avoid the desirable supporting member that directly contacts.
The gas lubrication technology also is applied on realization zero friction cylinder, leave minimum gap between cylinder barrel and the piston, and at piston radial the even throttle orifice that distributes is set, pressurized air in employing cylinder self cavity volume is as lubricant, gas is introduced in the gap, make piston be in complete suspended state in cylinder, piston does not contact each other with cylinder barrel, thereby has eliminated the friction force between the piston and cylinder barrel in the air cylinder structure.
Piston rod one end bears certain radial load, thereby can produce the formation that moment of flexure directly influences air film between piston and the cylinder barrel, when load acquires a certain degree, can make seizure of piston in cylinder barrel.The different application field requires different to the bending resistance of not having the friction cylinder piston, therefore it is indispensable the bending resistance of not having the friction cylinder being tested, if directly add a radial load at piston-rod end, can only test the bending resistance when not having the friction cylinder and be in static state, bending resistance when in fact piston is positioned at any one position of cylinder barrel is different, and in engineering practice process, do not have the friction cylinder and be in dynamic motion, do not have a kind of testing standard and testing tool easy to operate, that testing accuracy is high in the industry at present.
Summary of the invention
The deficiency of the bending resistance when can't Validity Test to go out not have the friction cylinder piston and be positioned at the cylinder barrel diverse location in order to overcome in the prior art the invention provides that a kind of power load maintainer does not directly contact with piston rod, kinetic measurement, accuracy of detection height, easy to operate nothing rub cylinder bending resistance proving installation.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of nothing friction cylinder bending resistance proving installation, described bending resistance proving installation comprises frame, ferromagnet, the air supporting pad, electromagnet and power sensor, the rodless cavity side of described nothing friction cylinder is fixed on the frame, the piston rod of described nothing friction cylinder is upwards to be arranged, described ferromagnet is sleeved on the upper end of described piston rod, described air supporting pad is installed on the elevating mechanism and is concentric with described ferromagnet, described air supporting pad is positioned on the described ferromagnet and air-flotation type connection between the two, described elevating mechanism is installed on the frame, described electromagnet is connected with the power sensor, described power sensor is connected with described elevating mechanism, described electromagnet and described ferromagnet over against, described elevating mechanism is provided with air supporting pad air supply opening, and described support is provided with the air admission hole that does not have the friction cylinder.
Further, described frame comprises base and two supports, described elevating mechanism comprises moving beam, ball-screw, the feed screw nut seat, line slideway and line slideway seat, described two supports vertically are fixed on the base, described ball-screw two ends are fixed therein on the support by bearing seat, described line slideway is installed on another support by holder, described moving beam one end is connected with the ball-screw nut seat, described feed screw nut cover for seat is contained on the described ball-screw, the other end of described mobile moving beam is connected with described line slideway seat, described line slideway cover for seat is contained on the described line slideway, and motor is connected with ball screw by shaft coupling; Have air supporting pad air supply opening on the described moving beam, have the air admission hole that does not have the friction cylinder on the described base.Certainly, also can select for use other elevating mechanism to realize.
Further, described electromagnet with in order to be connected by adjusting the electromagnetic force adjustment module that size of current changes electromagnetic force.
Described ferromagnet is pig iron head.Also can adopt other can be by the ferromagnet that magnet held.
Technical conceive of the present invention is: the air supporting pad is installed on the moving beam, be installed between the ferromagnet of piston rod upper end and the air supporting pad by gas lubrication, there is not friction force during relative motion, ball-screw drives moving beam and moves up and down, the position of control air supporting pad, cylinder ventilation back piston can reach suspended state in cylinder barrel.The electromagnet of belt coil is fixed by web member and moving beam, produce along the electromagnetic force of piston rod radial direction when feeding electric current and act on the ferromagnet, rotate the piston rod that does not have the friction cylinder, regulating magnet feeds the size of electric current, owing to only have air resistance by gas lubrication between piston and the cylinder barrel, but when the electromagnetic force that acts on piston-rod end constantly increases, the piston card is parked in the cylinder barrel and notes numerical value and the residing position of piston of power sensor this moment when reaching capacity, and can obtain piston and be positioned at the maximal bending moment that current location allows.
This programme has utilized the magnetic force principle to realize, described ferromagnet refers to produce the material of the strong complementary field identical with external magnetic field under the effect of magnetic field, described ferromagnet comprises iron-cobalt-nickel etc., attract behind its magnetic force that can be produced by electromagnet, the electromagnet of described belt coil can be by changing the size that the size that feeds electric current change magnetic force.
This proving installation is only applicable to the air supporting that aluminum alloy materials etc. do not influence by electromagnet does not have the friction cylinder.
Beneficial effect of the present invention mainly shows: kinetic measurement, accuracy of detection height, easy to operate.
Description of drawings
Fig. 1 is the synoptic diagram that does not have friction cylinder bending resistance proving installation.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1, a kind of nothing friction cylinder bending resistance proving installation, described bending resistance proving installation comprises frame, ferromagnet 10, air supporting pad 11, electromagnet 19 and power sensor 18, the rodless cavity side of described nothing friction cylinder is fixed on the frame, the piston rod of described nothing friction cylinder is upwards to be arranged, described ferromagnet 10 is sleeved on the upper end of described piston rod, described air supporting pad 11 is installed on the elevating mechanism and is concentric with described ferromagnet 10, described air supporting pad 11 is positioned on the described ferromagnet 10 and air-flotation type connection between the two, described elevating mechanism is installed on the frame, described electromagnet 19 is connected with power sensor 18, described power sensor 18 is connected with described elevating mechanism, described electromagnet 19 and described ferromagnet 10 over against, described elevating mechanism is provided with air supporting pad air supply opening, described support is provided with the air admission hole that does not have the friction cylinder.
Described ferromagnet 10 is pig iron head.Also can adopt other can be by the ferromagnet that magnet held.
The nothing friction cylinder bending resistance proving installation of present embodiment comprises air supporting pad 11, moving beam 15, electromagnet 19, power sensor 18, pig iron head, ball-screw 8, line slideway 14, support 9, base 20, motor 1, shaft coupling 2 and bearing seat 13.
Described nothing friction cylinder piston rod upwards is fixed on the center of base 20, described pig iron headgear is contained in the end that does not have friction cylinder piston rod 7, described air supporting pad 11 is installed in the center of moving beam 15 and concentric with pig iron head 10, strong sensor 18 and fixing with moving beam 15 by web member 17 is installed in described electromagnet 19 backs, described electromagnet 19 produce along piston rod 7 radially power and act on the pig iron head.Have or not the air admission hole 3 of the cylinder that rubs on the described base 20, air supporting pad air supply opening is arranged on the described moving beam 15.
Described support 9 has two and vertically be fixed on the base 20, described ball-screw 8 two ends are fixed on the support 9 by bearing seat 13, described line slideway 14 is installed on another support by holder 4, described moving beam 15 two ends are fixed with ball screw and line slideway by ball-screw nut seat 12 and line slideway seat 16 respectively, and described motor 1 is connected with ball screw by shaft coupling 2.
Adjust moving beam 15 residing positions, then respectively to air supporting pad 11 and nothing friction cylinder air feed, producing mutual acting force between piston rod 7 and the air supporting pad makes piston 6 be in equilibrium state, there is not friction force by gas lubrication between air supporting pad 11 and the pig iron head, rotary-piston bar 7 makes it rotate with certain speed, give electromagnet 19 power supplies and continue to increase electric current, the electromagnetic force that acts on the pig iron head constantly increases, piston 6 cards are parked in the cylinder barrel 5 and note the numerical value of power sensor at this moment when reaching capacity, and can accurately calculate the moment of flexure size that acts on this moment on the piston rod according to piston 6 residing positions again.
The proving installation of present embodiment is only applicable to the air supporting that aluminum alloy materials etc. do not influence by electromagnet does not have the friction cylinder.
Claims (4)
1. one kind is not had friction cylinder bending resistance proving installation, it is characterized in that: described bending resistance proving installation comprises frame, ferromagnet, the air supporting pad, electromagnet and power sensor, the rodless cavity side of described nothing friction cylinder is fixed on the frame, the piston rod of described nothing friction cylinder is upwards to be arranged, described ferromagnet is sleeved on the upper end of described piston rod, described air supporting pad is installed on the elevating mechanism and is concentric with described ferromagnet, described air supporting pad is positioned on the described ferromagnet and air-flotation type connection between the two, described elevating mechanism is installed on the frame, described electromagnet is connected with the power sensor, described power sensor is connected with described elevating mechanism, described electromagnet and described ferromagnet over against, described elevating mechanism is provided with air supporting pad air supply opening, and described support is provided with the air admission hole that does not have the friction cylinder.
2. nothing as claimed in claim 1 friction cylinder bending resistance proving installation, it is characterized in that: described frame comprises base and two supports, described elevating mechanism comprises moving beam, ball-screw, the feed screw nut seat, line slideway and line slideway seat, described two supports vertically are fixed on the base, described ball-screw two ends are fixed therein on the support by bearing seat, described line slideway is installed on another support by holder, described moving beam one end is connected with the ball-screw nut seat, described feed screw nut cover for seat is contained on the described ball-screw, the other end of described mobile moving beam is connected with described line slideway seat, described line slideway cover for seat is contained on the described line slideway, and motor is connected with ball screw by shaft coupling; Have air supporting pad air supply opening on the described moving beam, have the air admission hole that does not have the friction cylinder on the described base.
3. nothing as claimed in claim 1 or 2 friction cylinder bending resistance proving installation is characterized in that: described electromagnet be connected in order to the electromagnetic force adjustment module by adjustment size of current change electromagnetic force.
4. claim 1 or 2 described nothings friction cylinder bending resistance proving installations, it is characterized in that: described ferromagnet is pig iron head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310124912.5A CN103245493B (en) | 2013-04-10 | 2013-04-10 | Bending moment resistance testing device for frictionless cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310124912.5A CN103245493B (en) | 2013-04-10 | 2013-04-10 | Bending moment resistance testing device for frictionless cylinder |
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| Publication Number | Publication Date |
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| CN103245493A true CN103245493A (en) | 2013-08-14 |
| CN103245493B CN103245493B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310124912.5A Active CN103245493B (en) | 2013-04-10 | 2013-04-10 | Bending moment resistance testing device for frictionless cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677592A (en) * | 2015-03-14 | 2015-06-03 | 山西潞安环保能源开发股份有限公司 | Three-dimensional dynamic simulation test stand for regional underground water flow field |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2135968C1 (en) * | 1997-07-23 | 1999-08-27 | Открытое акционерное общество "Саратовский подшипниковый завод" | Instrument measuring moment of resistance of bearing to rotation |
| CN102620925A (en) * | 2012-04-12 | 2012-08-01 | 杭州电子科技大学 | Device and method for measurement testing of load of valve rocker of engine valve mechanism |
| CN102980703A (en) * | 2012-11-29 | 2013-03-20 | 重庆理工大学 | Method and device for testing dynamic pressing force of clutch release bearing of automobile |
| CN103016443A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Air suspension friction-free air cylinder provided with pressure relief groove |
| CN103016442A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Air suspension friction-free air cylinder provided with spherical hinge and uninfluenced by high pressure gas |
| CN103016441A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Air flotation cylinder for forming stable air film by microporous material |
| CN203275068U (en) * | 2013-04-10 | 2013-11-06 | 浙江工业大学 | Test device for testing bending resistance of frictionless cylinder |
-
2013
- 2013-04-10 CN CN201310124912.5A patent/CN103245493B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2135968C1 (en) * | 1997-07-23 | 1999-08-27 | Открытое акционерное общество "Саратовский подшипниковый завод" | Instrument measuring moment of resistance of bearing to rotation |
| CN102620925A (en) * | 2012-04-12 | 2012-08-01 | 杭州电子科技大学 | Device and method for measurement testing of load of valve rocker of engine valve mechanism |
| CN102980703A (en) * | 2012-11-29 | 2013-03-20 | 重庆理工大学 | Method and device for testing dynamic pressing force of clutch release bearing of automobile |
| CN103016443A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Air suspension friction-free air cylinder provided with pressure relief groove |
| CN103016442A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Air suspension friction-free air cylinder provided with spherical hinge and uninfluenced by high pressure gas |
| CN103016441A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Air flotation cylinder for forming stable air film by microporous material |
| CN203275068U (en) * | 2013-04-10 | 2013-11-06 | 浙江工业大学 | Test device for testing bending resistance of frictionless cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677592A (en) * | 2015-03-14 | 2015-06-03 | 山西潞安环保能源开发股份有限公司 | Three-dimensional dynamic simulation test stand for regional underground water flow field |
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| CN103245493B (en) | 2015-05-13 |
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Effective date of registration: 20181220 Address after: 401120 No. 7, East Airport Road, Shuangfengqiao Street, Yubei District, Chongqing Patentee after: Chongqing Brilliant Aluminum Furniture Co.,Ltd. Address before: 310014 18 Chao Wang Road, Zhaohui six District, Hangzhou, Zhejiang Patentee before: Zhejiang University of Technology |
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Effective date of registration: 20201124 Address after: 244000 Huayuan Road, Tongling, Anhui, No. 192 on the first floor Patentee after: Tongling Hailin Management Consulting Co.,Ltd. Address before: 401120 No. 7, East Airport Road, Shuangfengqiao Street, Yubei District, Chongqing Patentee before: Chongqing Brilliant Aluminum Furniture Co.,Ltd. |
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Effective date of registration: 20240604 Address after: 102600, 20th Floor, Building 14, Courtyard 9 Tianhua Street, Daxing District, Beijing, 2008 Patentee after: Beijing Zhitu Technology Co.,Ltd. Country or region after: China Address before: 244000 1st floor, 192 Huayuan Road, Tongling City, Anhui Province Patentee before: Tongling Hailin Management Consulting Co.,Ltd. Country or region before: China |
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