CN104198100A - Plunger pair friction measurement device with rotating cylinder body - Google Patents
Plunger pair friction measurement device with rotating cylinder body Download PDFInfo
- Publication number
- CN104198100A CN104198100A CN201410380197.6A CN201410380197A CN104198100A CN 104198100 A CN104198100 A CN 104198100A CN 201410380197 A CN201410380197 A CN 201410380197A CN 104198100 A CN104198100 A CN 104198100A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- plunger
- connecting rod
- main shaft
- dynamometry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
A plunger pair friction measurement device with a rotating cylinder body mainly comprises spiral groove type capillary throttling devices, a floating liner, a flow guide boss, a ball head force measurement touch rod, a force measurement connecting rod, a connecting rod chuck, a rotatable multi-dimensional force sensor, a wireless data collection device, the cylinder body, a casing communication oil lead duct, a pressure oil lead duct and a static pressure bearing oil supply hole; the three spiral groove type capillary throttling devices which are distributed on the circumference in an equally spaced mode are used for leading the pressure oil in a plunger chamber into a static pressure chamber which is formed on the outer surface of the floating liner through the pressure oil lead duct and the static pressure bearing oil supply hole to form a static pressure bearing assembly; the cylinder body cylindrical surface of the plunger chamber area is provided with the casing communication oil lead duct; a ball head of the force measurement touch rod is embedded in the floating liner so as to transfer the friction force of a plunger to the rotatable multi-dimensional force sensor through the force measurement connecting rod and the connecting rod chuck; the wireless data collection device is fixed; a small gap is reserved between the wireless data collection device and the sensor; data are transmitted out through a cable which is arranged on the wireless data collection device.
Description
Technical field
The present invention relates to the rotary plunger pair friction measurement device of a kind of axial plunger pump cylinder body, be specially adapted to the plunger pair friction measurement of aviation field mesohigh high speed small size axial plunger pump.
Background technology
Axial plunger pump is owing to there being the advantage such as high power density, compact conformation, be widely used in all types of industries, civil equipment, realize high power to weight ratio for aviation with ram pump and high-level efficiency is even more important, the research that therefore improves ram pump efficiency and energy-saving, service life prolonged aspect never stops.The principal element that affects ram pump efficiency is the friction loss of friction pair, the friction loss of high-speed overload operating mode lower plunger pair and the abrasion condition of motion couple are even more serious, therefore propose a kind of plunger pair friction measurement device that is applicable to small size axial plunger pump how research is improved to ram pump efficiency and power to weight ratio important in inhibiting.
Current existing plunger pair friction measurement device adopts the single plunger structure of swash plate rotation more, high speed single plunger testing table, low speed single plunger testing table and the dry friction single plunger testing table that Aachen, Germany polytechnical university builds all adopts fixing single plunger cavity body structure, rotate and realize the to-and-fro movement of single plunger and motion around the rotation of self axis by swash plate, differing larger with plunger actual motion form, there is larger distance with ram pump rotating speed in the maximum speed that can reach and aviation.Although these devices can approach pump actual condition on pressure, but cannot simulate cylinder body dither, the plunger motion phenomenon such as whirling motion in plunger cavity, simultaneously high-speed overload lower plunger centrifugal force be can not ignore, and adopts the measurement mechanism of swash plate rotation cannot simulate plunger to do the operating mode of centrifugal motion.
In the research of plunger pair friction measurement device that adopts cylinder body rotation, " model pump " testing table that " Wesco pump " testing table that Purdue Univ-West Lafayette USA builds and Zhejiang University build, all multi-dimension force sensor is arranged on the cylinder body face of cylinder, on cylinder body, process fairlead and through swash plate side hollow main shaft, data cable drawn, sensor rotates with cylinder body with cable, there is data cable because of high-speed rotary then the risk rubbing, the space constraint of simultaneously drawing oilhole and fairlead due to processing, this measurement mechanism is not suitable for the ram pump of small size.
Summary of the invention
In order to ensure that tested plunger pair forms of motion approaches actual condition, the invention provides a kind of plunger pair friction measurement device that adopts cylinder body rotation, be communicated with the impact of drawing the suffered non-ergometry of oily Structure Decreasing floating bush with housing by hydrostatic support, rotary type multi-dimension force sensor make sensor wiring and mounting means simple and reliable.
The present invention for the technical scheme that its technical matters of solution adopts is: a kind of plunger pair friction measurement device that adopts cylinder body rotation, comprise spiral groove type capillary restrictor, floating bush, flow guiding dummy club, bulb dynamometry feeler lever, dynamometry connecting rod, connecting rod chuck, rotary type multi-dimension force sensor, wireless data acquisition device, axial plunger pump cylinder body, return plate, spring collar, preloading spring, center ball pivot, cylinder body outer ring cylinder roller bearing, housing is communicated with and draws oil duct, pressure oil draws oil duct, valve plate, swash plate, hydrostatic support oil supplying hole, valve plate side hollow main shaft, swash plate side hollow main shaft, in one of them plunger hole of axial plunger pump cylinder body, process flow guiding dummy club, flow guiding dummy club outer wall and floating bush inwall clearance fit, three spiral groove type capillary restrictors that are equally spaced on circumference draw oil duct by the pressure oil on cylinder body and hydrostatic support oil supplying hole is introduced the pressure oil in plunger cavity in the cavity of floating bush outside surface, form hydrostatic support assembly, on the cylinder body periphery in this plunger cavity region, offer housing connection and draw oil duct simultaneously, the friction force that the circular hole that the bulb of dynamometry feeler lever is offered with floating bush middle part coordinates to come sensing plunger and floating bush to produce, dynamometry connecting rod one end is threaded with bulb dynamometry feeler lever, the other end is fixed with the connecting rod chuck being arranged on rotary type multi-dimension force sensor, cylinder body rotarily drives dynamometry connecting rod, connecting rod chuck, swash plate side hollow main shaft and multi-dimension force sensor are around self central axis rotation, wireless data acquisition device maintains static, and leave minim gap with sensor, data are spread out of by the cable on wireless data acquisition device.
Described floating bush outside surface circumferencial direction is offered three static pressure chambeies and three oil-recovery tanks equably, axially offers two row static pressure chambeies, amounts to six static pressure chambeies.
Described preloading spring is enclosed within on the swash plate side hollow main shaft outside surface of supporting cylinder body, and by spring collar one side compression cylinder body and valve plate, opposite side compresses center ball pivot and return plate, and return plate and swash plate fixed gap are installed.
Described cylinder body is supported jointly by valve plate side hollow main shaft and swash plate side hollow main shaft, outer surface of cylinder block and cylinder roller bearing clearance fit, simultaneously moving axially of the flanged structure of cylinder body outer ring restriction cylinder roller bearing.
Plunger cavity number on described cylinder body is 2-7.
The present invention has adopted high rotating speed, wide range, high-precision rotary type multi-dimension force sensor, the present invention that develops into of high rotating speed, wide range, high-precision rotary type multi-dimension force sensor adopts the plunger pair friction measurement device of cylinder body rotation that advantage is provided, because being arranged in ram pump rotary components periphery, data cable need to not turn round with cylinder body, reduce the operation to housing structure transformation, it is more simple and reliable that entirety is measured structure, compact, has adapted to the requirement of the high power to weight ratio ram pump of research aviation field small-medium size.
Advantage of the present invention is: adopt the mode of cylinder body rotation to ensure that plunger pair forms of motion is substantially constant, the hydrostatic support structure of floating bush is easy to realize with supplying pressure oil structure, less to the change of housing structure; Small and exquisite and the compact conformation of friction force sensing apparatus, rotary type multi-dimension force sensor make sensor wiring and mounting means simple and reliable, can realize the plunger pair friction force of the high-voltage high-speed axial plunger pump of measuring small size, one-piece construction is convenient to dismantle and is tested to change different plungers simultaneously.
Brief description of the drawings
Fig. 1 is general assembly drawing of the present invention.
Fig. 1 (b) is the partial enlarged drawing of the I portion of Fig. 1.
Fig. 2 is axial cut-open view of the present invention.
Fig. 3 is the oil supply structure schematic diagram of hydrostatic support of the present invention.
Fig. 4 is the static pressure cavity configuration schematic diagram of floating bush of the present invention.
In figure: 1. spiral groove type capillary restrictor, 2. floating bush, 3. flow guiding dummy club, 4. bulb dynamometry feeler lever, 5. dynamometry connecting rod, 6. connecting rod chuck, 7. rotary type multi-dimension force sensor, 8. wireless data acquisition device, 9. axial plunger pump cylinder body, 10. return plate, 11. spring collars, 12. preloading springs, 13. center ball pivots, 14. cylinder body outer ring cylinder roller bearings, 15. housings are communicated with and draw oil duct, 16. pressure oils draw oil duct, 17. valve plates, 18. swash plates, 19. hydrostatic support oil supplying holes, 20. valve plate side hollow main shafts, 21. swash plate side hollow main shafts.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As Fig. 1, Fig. 2, shown in Fig. 3, the present invention includes spiral groove type capillary restrictor 1, floating bush 2, flow guiding dummy club 3, bulb dynamometry feeler lever 4, dynamometry connecting rod 5, connecting rod chuck 6, rotary type multi-dimension force sensor 7, wireless data acquisition device 8, axial plunger pump cylinder body 9, return plate 10, spring collar 11, preloading spring 12, center ball pivot 13, cylinder body outer ring cylinder roller bearing 14, housing is communicated with and draws oil duct 15, pressure oil draws oil duct 16, valve plate 17, swash plate 18, hydrostatic support oil supplying hole 19, valve plate side hollow main shaft 20, swash plate side hollow main shaft 21, one of them plunger hole of axial plunger pump cylinder body 9 be extended to can with floating bush 2 clearance fit, process flow guiding dummy club 3, flow guiding dummy club 3 outer walls and floating bush 2 inwall clearance fit simultaneously.With three spiral groove type capillary restrictors 1 of equidistant installation on the concentric circumference of this plunger hole, on cylinder body 9, have three pressure oils and draw oil duct 16, each flow controller 1 one end is drawn oil duct 16 with three pressure oils on cylinder body 9 and is communicated with, the other end is communicated with the hydrostatic support oil supplying hole 19 on cylinder body 9, hydrostatic support oil supplying hole 19 on cylinder body 9 is communicated with the static pressure chamber of floating bush 2 outside surfaces respectively, thereby the pressure oil in plunger cavity draws oil duct 16 and hydrostatic support oil supplying hole 19 by pressure oil to be introduced in the static pressure chamber of floating bush 2 outside surfaces and forms hydrostatic support assembly, on cylinder body 9 peripheries in this plunger cavity region, offer housing connection and draw oil duct 15 simultaneously, make floating bush 2 both ends of the surface all bear housing oil liquid pressure, therefore floating bush 2 is almost only subject to plunger actuation and floats in axial and circumferential direction.The circular hole that the bulb of dynamometry feeler lever 4 is offered with floating bush 2 middle parts coordinates to come sensing lining 2 to float and the power of generation in axial and circumferential direction, dynamometry connecting rod 5 one end are threaded with bulb dynamometry feeler lever 4, the other end is fixing with connecting rod chuck 6 through the swash plate side hollow main shaft 21 of supporting cylinder body 9, connecting rod chuck 6 is screwed on rotary type multi-dimension force sensor 7, cylinder body 9, dynamometry connecting rod 5, connecting rod chuck 6, swash plate side hollow main shaft 21 is installed with multi-dimension force sensor 7 coaxial cables, cylinder body 9 drives dynamometry connecting rod 5 while rotation, connecting rod chuck 6, swash plate side hollow main shaft 21 rotates around common central axis with multi-dimension force sensor 7.Wireless data acquisition device 8 maintains static, and leaves minim gap with sensor 7, and data are spread out of by the cable on wireless data acquisition device 8.As shown in Figure 4, floating bush 2 outside surface circumferencial directions are offered three static pressure chambeies and three oil-recovery tanks equably, axially offer two row static pressure chambeies, amount to six static pressure chambeies.
On each spiral groove type capillary restrictor 1, process two sections of helicla flutes, spiral groove end is communicated with two hydrostatic support oil supplying holes 19 on cylinder body 9 respectively.In the axial direction, two row static pressure chambeies reduce floating bush 2 axis inclined degrees, in the radial direction, three equally distributed static pressure chambeies help floating bush 2 with plunger cavity to the heart.
Described preloading spring 12 is enclosed within on swash plate side hollow main shaft 21 outside surfaces of supporting cylinder body 9, and by spring collar 11 1 side compression cylinder bodies 9 and valve plate 17, opposite side compresses center ball pivot 13 and return plate 10, and return plate 10 is installed with swash plate 18 fixed gaps.
Described cylinder body 9 is supported jointly by valve plate side hollow main shaft 20 and swash plate side hollow main shaft 21, cylinder body 9 outside surfaces and cylinder roller bearing 14 clearance fit, simultaneously moving axially of the flanged structure of cylinder body 9 outer rings restriction cylinder roller bearing 14.
Plunger cavity number on described cylinder body 9 is 2-7.
Content described in this instructions embodiment is only enumerating of way of realization to inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (5)
1. adopt the plunger pair friction measurement device of cylinder body rotation, it is characterized in that: comprise spiral groove type capillary restrictor (1), floating bush (2), flow guiding dummy club (3), bulb dynamometry feeler lever (4), dynamometry connecting rod (5), connecting rod chuck (6), rotary type multi-dimension force sensor (7), wireless data acquisition device (8), axial plunger pump cylinder body (9), return plate (10), spring collar (11), preloading spring (12), center ball pivot (13), cylinder body outer ring cylinder roller bearing (14), housing is communicated with and draws oil duct (15), pressure oil draws oil duct (16), valve plate (17), swash plate (18), hydrostatic support oil supplying hole (19), valve plate side hollow main shaft (20), swash plate side hollow main shaft (21),
In one of them plunger hole of cylinder body (9), process flow guiding dummy club (3), flow guiding dummy club (3) outer wall and floating bush (2) inwall clearance fit, three spiral groove type capillary restrictors (1) that are equally spaced on circumference draw oil duct (16) by the pressure oil on cylinder body (9) to be introduced the pressure oil in plunger cavity in the cavity of floating bush (2) outside surface with hydrostatic support oil supplying hole (19), form hydrostatic support assembly, on cylinder body (9) periphery in this plunger cavity region, offer housing connection and draw oil duct (15) simultaneously,
The friction force that the circular hole that the bulb of dynamometry feeler lever (4) is offered with floating bush (2) middle part coordinates to come sensing plunger and floating bush (2) to produce, dynamometry connecting rod (5) one end is threaded with bulb dynamometry feeler lever (4), the other end is fixed with the connecting rod chuck (6) being arranged on rotary type multi-dimension force sensor (7), cylinder body (9) rotarily drives dynamometry connecting rod (5), connecting rod chuck (6), swash plate side hollow main shaft (21) and multi-dimension force sensor (7) are around self central axis rotation, wireless data acquisition device (8) maintains static, and leave minim gap with sensor (7), data are spread out of by the cable on wireless data acquisition device (8).
2. the plunger pair friction measurement device of employing cylinder body rotation according to claim 1, it is characterized in that: described floating bush (2) outside surface circumferencial direction is offered three static pressure chambeies and three oil-recovery tanks equably, axially offer two row static pressure chambeies, amount to six static pressure chambeies.
3. the plunger pair friction measurement device of employing cylinder body rotation according to claim 1, it is characterized in that: described preloading spring (12) is enclosed within on swash plate side hollow main shaft (21) outside surface of supporting cylinder body (9), by spring collar (11) one side compression cylinder bodies (9) and valve plate (17), opposite side compresses center ball pivot (13) and return plate (10), and return plate (10) is installed with swash plate (18) fixed gap.
4. the plunger pair friction measurement device of employing cylinder body rotation according to claim 1, it is characterized in that: described cylinder body (9) is supported jointly by valve plate side hollow main shaft (20) and swash plate side hollow main shaft (21), cylinder body (9) outside surface and cylinder roller bearing (14) clearance fit, simultaneously moving axially of the flanged structure of cylinder body (9) outer ring restriction cylinder roller bearing (14).
5. the plunger pair friction measurement device of employing cylinder body rotation according to claim 1, is characterized in that: the plunger cavity number on described cylinder body (9) is 2-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380197.6A CN104198100B (en) | 2014-08-04 | 2014-08-04 | Adopt the plunger pair friction measurement device that cylinder body rotates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410380197.6A CN104198100B (en) | 2014-08-04 | 2014-08-04 | Adopt the plunger pair friction measurement device that cylinder body rotates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104198100A true CN104198100A (en) | 2014-12-10 |
| CN104198100B CN104198100B (en) | 2016-06-01 |
Family
ID=52083427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410380197.6A Active CN104198100B (en) | 2014-08-04 | 2014-08-04 | Adopt the plunger pair friction measurement device that cylinder body rotates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104198100B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865071A (en) * | 2015-06-04 | 2015-08-26 | 安徽工业大学 | Device and method for testing performances of plunger-copper sleeve friction pair |
| CN105181205A (en) * | 2015-09-09 | 2015-12-23 | 浙江大学 | High-pressure high-speed axial piston pump piston pair four-axis force testing device |
| CN107991009A (en) * | 2016-10-26 | 2018-05-04 | 天津市浩航科技有限公司 | Automobile using butt plate pressometer |
| US10281388B2 (en) | 2015-12-18 | 2019-05-07 | Ducom Instruments Pvt. Ltd. | Tester to estimate co-efficient of friction and determine properties of a sample lubricant |
| CN110439798A (en) * | 2019-07-19 | 2019-11-12 | 北京航空航天大学 | A kind of plunger motion lateral force analogue measurement testing stand of high speed plunger pump |
| CN110567705A (en) * | 2019-07-26 | 2019-12-13 | 中国北方车辆研究所 | Distribution friction pair performance simulation test device based on floating disc |
| CN111852806A (en) * | 2020-06-17 | 2020-10-30 | 中国中元国际工程有限公司 | Grouting pump for runway snow melting composite pipe and working method of grouting pump |
| CN112643544A (en) * | 2020-12-23 | 2021-04-13 | 南京肯迈得机床制造有限公司 | Friction force detection method for travelling mill |
| CN113008718A (en) * | 2021-03-23 | 2021-06-22 | 太原科技大学 | Axial plunger pump flow distribution pair test device and method |
| CN114033660A (en) * | 2021-12-01 | 2022-02-11 | 兰州理工大学 | Crank rocker type single-plunger pair high-efficiency energy-saving abrasion test bed for high-power plunger pump |
| CN115597854A (en) * | 2022-12-14 | 2023-01-13 | 浙江大学（Cn） | Inner curve hydraulic motor roller-plunger friction pair testing device and testing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896151A2 (en) * | 1997-08-06 | 1999-02-10 | Kayaba Kogyo Kabushiki Kaisha | Synthetic low friction piston for a hydraulic pump or motor |
| CN1542295A (en) * | 2003-11-06 | 2004-11-03 | 浙江大学 | Pure water hydraulic axial plunger pump / motor by total water lubrication |
| CN101270739A (en) * | 2008-05-13 | 2008-09-24 | 河北德邦科技开发有限公司 | Axial plunger type hydraulic motor or pump |
| CN101413812A (en) * | 2008-11-07 | 2009-04-22 | 浙江大学 | Device for testing plunger sub-oil film characteristic of plunger pump / motor |
| CN101413838A (en) * | 2008-11-07 | 2009-04-22 | 浙江大学 | Apparatus for measuring plunger sub-oil film viscous friction |
| CN103939312A (en) * | 2014-04-25 | 2014-07-23 | 福州大学 | Balanced type double-row large-displacement axial plunger pump |
-
2014
- 2014-08-04 CN CN201410380197.6A patent/CN104198100B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896151A2 (en) * | 1997-08-06 | 1999-02-10 | Kayaba Kogyo Kabushiki Kaisha | Synthetic low friction piston for a hydraulic pump or motor |
| CN1542295A (en) * | 2003-11-06 | 2004-11-03 | 浙江大学 | Pure water hydraulic axial plunger pump / motor by total water lubrication |
| CN101270739A (en) * | 2008-05-13 | 2008-09-24 | 河北德邦科技开发有限公司 | Axial plunger type hydraulic motor or pump |
| CN101413812A (en) * | 2008-11-07 | 2009-04-22 | 浙江大学 | Device for testing plunger sub-oil film characteristic of plunger pump / motor |
| CN101413838A (en) * | 2008-11-07 | 2009-04-22 | 浙江大学 | Apparatus for measuring plunger sub-oil film viscous friction |
| CN103939312A (en) * | 2014-04-25 | 2014-07-23 | 福州大学 | Balanced type double-row large-displacement axial plunger pump |
Non-Patent Citations (1)
| Title |
|---|
| 陈庆瑞: "轴向柱塞泵柱塞油膜特性测试系统研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865071B (en) * | 2015-06-04 | 2017-05-10 | 安徽工业大学 | Device and method for testing performances of plunger-copper sleeve friction pair |
| CN104865071A (en) * | 2015-06-04 | 2015-08-26 | 安徽工业大学 | Device and method for testing performances of plunger-copper sleeve friction pair |
| CN105181205A (en) * | 2015-09-09 | 2015-12-23 | 浙江大学 | High-pressure high-speed axial piston pump piston pair four-axis force testing device |
| CN105181205B (en) * | 2015-09-09 | 2017-07-07 | 浙江大学 | A kind of axial force test device of high-voltage high-speed axial plunger pump plunger pair four |
| US10281388B2 (en) | 2015-12-18 | 2019-05-07 | Ducom Instruments Pvt. Ltd. | Tester to estimate co-efficient of friction and determine properties of a sample lubricant |
| CN107991009A (en) * | 2016-10-26 | 2018-05-04 | 天津市浩航科技有限公司 | Automobile using butt plate pressometer |
| CN110439798A (en) * | 2019-07-19 | 2019-11-12 | 北京航空航天大学 | A kind of plunger motion lateral force analogue measurement testing stand of high speed plunger pump |
| CN110567705B (en) * | 2019-07-26 | 2021-03-23 | 中国北方车辆研究所 | Distribution friction pair performance simulation test device based on floating disc |
| CN110567705A (en) * | 2019-07-26 | 2019-12-13 | 中国北方车辆研究所 | Distribution friction pair performance simulation test device based on floating disc |
| CN111852806A (en) * | 2020-06-17 | 2020-10-30 | 中国中元国际工程有限公司 | Grouting pump for runway snow melting composite pipe and working method of grouting pump |
| CN112643544A (en) * | 2020-12-23 | 2021-04-13 | 南京肯迈得机床制造有限公司 | Friction force detection method for travelling mill |
| CN112643544B (en) * | 2020-12-23 | 2022-09-13 | 南京肯迈得机床制造有限公司 | Friction force detection method for travelling mill |
| CN113008718A (en) * | 2021-03-23 | 2021-06-22 | 太原科技大学 | Axial plunger pump flow distribution pair test device and method |
| CN114033660A (en) * | 2021-12-01 | 2022-02-11 | 兰州理工大学 | Crank rocker type single-plunger pair high-efficiency energy-saving abrasion test bed for high-power plunger pump |
| CN114033660B (en) * | 2021-12-01 | 2023-10-31 | 兰州理工大学 | Crank rocker type single plunger pair high-efficiency energy-saving abrasion test bed for high-power plunger pump |
| CN115597854A (en) * | 2022-12-14 | 2023-01-13 | 浙江大学（Cn） | Inner curve hydraulic motor roller-plunger friction pair testing device and testing method |
| CN115597854B (en) * | 2022-12-14 | 2023-03-31 | 浙江大学 | Inner curve hydraulic motor roller-plunger friction pair testing device and testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104198100B (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104198100A (en) | Plunger pair friction measurement device with rotating cylinder body | |
| CN103821861B (en) | Axial eddy current damper based on spiral transmission method | |
| CN103148220B (en) | A kind of magnetic liquid rotating sealing device | |
| CN206338351U (en) | A kind of electromagnetic eddy rotary damper | |
| CN108680356A (en) | Fit clearance continuous adjustable thrust bearing testing stand | |
| CN203420648U (en) | Staggered supporting type centralizer of cased well logger | |
| CN205327440U (en) | Electric steering engine radial force loading device | |
| CN104190751B (en) | A kind of for correct rotating roller body flexible deformation and with the device of equilibrator | |
| CN106523532B (en) | The oil-air lubrication bearing block and its application method of a kind of Bidirectional nozzle | |
| CN106482950B (en) | A kind of angular contact bearing birotor testing machine shafting structure | |
| CN102814733A (en) | Large-size end surface processing electric spindle for mixed support of hydrostatic bearing and rolling bearing | |
| CN102767341A (en) | Novel drill pipe bracket for horizontal directional drilling machine | |
| CN207921166U (en) | wet separation clutch assembly and power assembly | |
| CN103441608A (en) | Electric cylinder anti-rotation mechanism | |
| CN105090244B (en) | Axially loaded magnetic suspension bearing | |
| CN105158497A (en) | Magnetic suspension rotating speed sensor | |
| CN205719116U (en) | Permanent magnetism magnetic suspension turbine sensor | |
| CN201666125U (en) | Roller-type centralizer | |
| CN104670524B (en) | A kind of friction-free air floating space weightlessness rotating simulator | |
| CN104251775B (en) | A kind of Internal Spherical Surface Contact Pair viscosity pulling figure test unit | |
| CN207248524U (en) | A kind of sliding bear experiment device | |
| RU176062U1 (en) | RADIALLY THrust ROLLER BEARING WITH RING grooves IN CONIC PROFILE | |
| CN203176049U (en) | Air flotation friction-free air cylinder for adopting cellular materials to form stable air film | |
| CN105865540A (en) | Turbine sensor structure adopting permanent magnet maglev | |
| CN207746892U (en) | A kind of mechanical main shaft of grinding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |