CN104458466A - Friction performance testing device for slipper pair of high-pressure axial plunger pump - Google Patents
Friction performance testing device for slipper pair of high-pressure axial plunger pump Download PDFInfo
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- CN104458466A CN104458466A CN201410581646.3A CN201410581646A CN104458466A CN 104458466 A CN104458466 A CN 104458466A CN 201410581646 A CN201410581646 A CN 201410581646A CN 104458466 A CN104458466 A CN 104458466A
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Abstract
The invention discloses a friction performance testing device for a slipper pair of a high-pressure axial plunger pump. The left and right sides of a box body are respectively provided with a high-pressure oil chamber and a sealed experiment chamber; the left and right ends of the box body are respectively provided with a left end cover and a right end cover of the box body; the high-pressure oil chamber is internally provided with a thrust piston; the end part of a piston rod of the thrust piston is arranged in the sealed experiment chamber and is connected with a slipper for testing through a connecting bolt; a swash plate stationary shaft is arranged on the right end cover of the box body; one end of the stationary swash plate shaft is arranged in the sealed experiment chamber, and a swash plate for testing is connected to the end through a bolt; and the other end of the swash plate stationary shaft is connected with a variable-frequency motor through a shaft coupling, and the variable-frequency motor is controlled by a frequency converter. By using the friction performance testing device, not only can the dry friction performance of the slipper pair of the high-pressure axial plunger pump be tested, but also different working states can be simulated to test. The friction performance testing device has the advantages of simple structure, convenience in use, accuracy in testing, low manufacturing and using costs and the like.
Description
Technical field
the present invention relates to a kind of high pressure axial plunger pump Slipper coupling friction performance testing device, belong to axial plunger pump skid shoe secondary parts frictional behaviour technical field of measurement and test.
Background technology
at present, in conventional axial plunger pump, 7,9 or 11 Slipper coupling are generally installed, each Slipper coupling is made up of piston shoes and swash plate, the detailed construction of each Slipper coupling as shown in Figure 2, in practical work process, piston shoes are along the surperficial high-speed slide of swash plate, at floor design You Nei grease chamber and the supplemental support oil groove of piston shoes, axial plunger pump operationally, there is high-voltage oil liquid to enter grease chamber and supplemental support oil groove in piston shoes bottom surface by the oilhole that piston shoes are arranged in pump, thus between piston shoes and swash plate, form the support of one deck oil film static pressure; That is, actual pump in the course of the work, has one deck lubricating oil film between piston shoes bottom surface and swash surfaces.The performance of whole pump performance and this layer of oil film is closely bound up, and the performance of oil film is good, and the life-span of pump is just long; The performance of oil film is bad, and piston shoes bottom surface and swash surfaces just there will be the dry friction phenomenon of Metal Contact metal, and the dry friction time one is long, will burn out piston shoes, thus cause whole pump to break down.Thus, in order to improve pump performance, the energy of a lot of scholar is all concentrated on that layer of oil film between research piston shoes and swash plate, thus, a lot of measuring technology scheme about Slipper coupling frictional behaviour is had to be all test for the performance of Slipper coupling oil film in prior art, go out to send from the angle of film lubrication to carry out testing, and be all the test directly whole high pressure axial plunger pump simulation actual condition being carried out film lubrication performance when testing, this method of testing can disclose Slipper coupling film lubrication performance, but can not disclose the dry friction performance of Slipper coupling; But also there is the problems such as testing cost is high, proving installation complex structure, test operation trouble, testing efficiency are low.Therefore, the test mode of existing high pressure axial plunger pump Slipper coupling frictional behaviour can't disclose the serviceability of Slipper coupling comprehensively, needs to carry out further supplementing test.
Summary of the invention
the object of the invention is to, there is provided that a kind of structure is simple, easy to use, test accurately, make and use cost lower and dry friction performance test can not only be carried out and the high pressure axial plunger pump Slipper coupling friction performance testing device that different operating state carries out testing can also be simulated, to overcome the deficiencies in the prior art.
technical scheme of the present invention is achieved in that
a kind of high pressure axial plunger pump Slipper coupling friction performance testing device of the present invention is, this device comprises casing, high-voltage oil cavity and experiment closed chamber is respectively equipped with in the left and right sides of casing, at the two ends, left and right of casing, casing left end cap and casing right end cap are housed respectively, casing left end cap is provided with the oil-feed connector for being connected with hydraulic control device and oil return connector; In high-voltage oil cavity, thrust piston is housed, the piston rod end of thrust piston is arranged in experiment closed chamber, the piston rod end of thrust piston by coupling bolt with test with the piston shoes of composition Slipper coupling be connected; Swash plate stationary shaft is arranged on casing right end cap by large bearing and little bearing, one end of swash plate stationary shaft is arranged in experiment closed chamber, and the swash plate of the composition Slipper coupling tested is bolted on this end, the other end of swash plate stationary shaft is connected with the variable-frequency motor by Frequency Converter Control by shaft coupling.
above-mentioned hydraulic control device comprises by motor-operated hydraulic pump, the working pressure oil that hydraulic pump exports enters into high-voltage oil cavity by oil pipe through the oil-feed connector of retaining valve and casing left end cap, and the oily oil return connector through casing left end cap of the working pressure in high-voltage oil cavity also flows back to fuel tank through electricity liquid ratio relief valve.
the embedded control system for controlled pressure oil pressure is connected with at the control end of above-mentioned electricity liquid ratio relief valve, and in high-voltage oil cavity, the pressure of pressure oil is measured in real time by the pressure transducer be connected on casing left end cap oil-feed connector, processs and displays in transmitting measured values to embedded control system.
an accumulator is also connected with at the oil-feed connector place of above-mentioned casing left end cap.
the output oil pipe of above-mentioned hydraulic pump is also connected with relief circuit, this relief circuit is made up of pilot operated compound relief valve and bi-bit bi-pass solenoid directional control valve, the oil-in end of pilot operated compound relief valve is communicated with the output oil pipe of hydraulic pump by oil pipe, the control mouth end of pilot operated compound relief valve is connected with the port often opening position of bi-bit bi-pass solenoid directional control valve, the oil-out of pilot operated compound relief valve is all connected with fuel tank by oil pipe with another port often opening position of bi-bit bi-pass solenoid directional control valve, and the magnet control end of bi-bit bi-pass solenoid directional control valve is connected with embedded control system by wire.
the pressure 20%-30% of the working pressure oil that the working pressure of above-mentioned pilot operated compound relief valve exports higher than hydraulic pump.
also be provided with a tensimeter at the delivery outlet end of above-mentioned hydraulic pump, the oil-in end of hydraulic pump is communicated with fuel tank by filtrator.
the connector end of above-mentioned accumulator is connected with the oil-feed connector of casing left end cap by stop valve.
be provided with oil-in blocking on the top of above-mentioned casing, be provided with oil-out blocking in the bottom of casing.
between above-mentioned large bearing and little bearing, be provided with the thrust bush for axial location, and thrust bush is enclosed within swash plate stationary shaft; On swash plate stationary shaft, also cover has the thrust gland bonnet as location and sealing, and thrust gland bonnet is bolted on casing right end cap.
owing to have employed technique scheme, the present invention can not only carry out high pressure axial plunger pump Slipper coupling dry friction performance test, and can also simulate different operating state and test.The present inventor is from the high pressure axial plunger pump Slipper coupling friction performance testing device that goes out designed by the angle of friction, based on following consideration: well-known, axial plunger pump is because being high performance high-pressure pump, its operating mode is ever-changing, no matter how good the Slipper coupling of pump design, and occurs that the phenomenon that oil film lost efficacy is inevitable.Just because of this, the present inventor with regard to special for occur oil film lost efficacy after phenomenon study, improve by every means oil film lost efficacy after " endurance " of Slipper coupling, namely improve the resistibility of Metal Contact metal high-speed friction.Because, after all generally oil film lost efficacy be once in a while, of short duration, once operating mode one becomes, oil film can self-healing, if improve the resistivity of that of short duration oil film failure period Slipper coupling, so, once in a while, just to lose efficacy not be very serious problem to of short duration oil film.So, the present inventor devises this set of experimental provision for the Slipper coupling dry friction phenomenon of Metal Contact metal, adopt apparatus of the present invention directly can investigate the friction and wear behavior of Slipper coupling dry friction, certainly, the determination of this friction and wear behavior also will detect by means of rubbing wear instrument and equipment that is special in prior art, standard, use the knowledge of tribology to improve the materials and structures etc. of Slipper coupling again for testing result, improve the dry friction performance of piston shoes and swash plate as possible.The present invention is in order to reach this object, and this set of experimental provision custom-designed, for the generation of high pressure axial plunger pump Slipper coupling dry friction creates condition.
compared with prior art, the present invention has the following advantages in the present invention:
(1), the present invention changes the oblique disk structure in actual high-voltage axial plunger pump skid shoe pair into rising structure, greatly simplifies experimental provision, meanwhile, also do not affect the detection of its frictional behaviour.
(2), the piston shoes in high pressure axial plunger pump Slipper coupling and swash plate are all designed to dismountable, for the Slipper coupling friction and wear behavior tested under different operating mode provides strong hardware support by the present invention;
(3), the pressure of high pressure axial plunger pump Slipper coupling of the present invention and rotating speed adjustable, controlled, the various operating modes of actual pump can be simulated;
(4), the present invention can carry out special dry friction performance test to high pressure axial plunger pump Slipper coupling.
in addition, the present invention also have that structure is simple, easy to use, test accurately, make and the advantage such as use cost is lower.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention;
fig. 2 is the structural representation of prior art mesohigh axial plunger pump skid shoe pair.
being labeled as in figure: 1-filtrator, 2-hydraulic pump, 3-motor, 4-pilot operated compound relief valve, 5-bi-bit bi-pass solenoid directional control valve, 6-tensimeter, 7-retaining valve, 8-accumulator, 9-stop valve, 10-pressure transducer, 11-embedded control system, 12-electricity liquid ratio relief valve, 13-casing left end cap, 14-casing, 15-oil-in blocks, 16-thrust piston, 17-piston shoes, 18-swash plate, 19-casing right end cap, 20-thrust gland bonnet, 21-coupling bolt, 22-high-voltage oil cavity, 23-oil-out blocks, 24-tests closed chamber, 25-swash plate stationary shaft, the large bearing of 26-, 27-thrust bush, the little bearing of 28-, 29-shaft coupling, 30-variable-frequency motor, 31-frequency converter.
Embodiment
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
embodiments of the invention: the structural representation of a kind of high pressure axial plunger pump Slipper coupling friction performance testing device of the present invention as shown in Figure 1, this device comprises casing 14, during making, high-voltage oil cavity 22 and experiment closed chamber 24 is produced respectively in the left and right sides of casing 14, then load onto casing left end cap 13 and casing right end cap 19 respectively at the two ends, left and right of casing 14, casing left end cap 13 is produced the oil-feed connector for being connected with hydraulic control device and oil return connector, thrust piston 16 is housed in high-voltage oil cavity 22, makes the piston rod end of thrust piston 16 be arranged in experiment closed chamber 24, the piston rod end of thrust piston 16 by coupling bolt 21 with test with the piston shoes 17 of composition Slipper coupling be connected, swash plate stationary shaft 25 is arranged on casing right end cap 19 by large bearing 26 and little bearing 28, one end of swash plate stationary shaft 25 is made to be arranged in experiment closed chamber 24, and make the swash plate 18 of the composition Slipper coupling of test be connected on this end by bolt, the other end of swash plate stationary shaft 25 is connected with the variable-frequency motor 30 controlled by frequency converter 31 by shaft coupling 29, its hydraulic control device comprises the hydraulic pump 2 driven by motor 3, the working pressure oil exported by hydraulic pump 2 enters into high-voltage oil cavity 22 by oil pipe through the oil-feed connector of retaining valve 7 and casing left end cap 13, makes the oil of the working pressure in high-voltage oil cavity 22 through the oil return connector of casing left end cap 13 and flows back to fuel tank through electricity liquid ratio relief valve 12, in order to realize automatic control, embedded control system 11 for controlling working pressure oil pressure can be connected with at the control end of electricity liquid ratio relief valve 12, embedded control system 11 is comparatively simple, existing finished product can be directly adopted to install, the pressure of pressure oil in high-voltage oil cavity 22 is measured in real time by the pressure transducer 10 be connected on casing left end cap 13 oil-feed connector, and transmitting measured values is processed and displayed in embedded control system 11, in order to reduce the fluctuation of oil liquid pressure in high-voltage oil cavity 22, an accumulator 8 can be connected at the oil-feed connector place of casing left end cap 13, the output oil pipe of hydraulic pump 2 is also connected with relief circuit, this relief circuit is made up of pilot operated compound relief valve 4 and bi-bit bi-pass solenoid directional control valve 5, the oil-in end of pilot operated compound relief valve 4 is communicated with by the output oil pipe of oil pipe with hydraulic pump 2, the control mouth end of pilot operated compound relief valve 4 is connected with the port often opening position of bi-bit bi-pass solenoid directional control valve 5, another port that position often opened by oil-out and the bi-bit bi-pass solenoid directional control valve 5 of pilot operated compound relief valve 4 is all connected with fuel tank by oil pipe, and the magnet control end of bi-bit bi-pass solenoid directional control valve 5 is connected with embedded control system 11 by wire, during use, the working pressure of pilot operated compound relief valve 4 is arranged the pressure 20%-30% of the working pressure oil exported higher than hydraulic pump 2, also be provided with a tensimeter 6 at the delivery outlet end of hydraulic pump 2, the oil-in end of hydraulic pump 2 is communicated with fuel tank by filtrator 1, in order to dismounting and easy to use, the connector end of accumulator 8 can be connected with the oil-feed connector of casing left end cap 13 by stop valve 9, an oil-in be installed on the top of casing 14 simultaneously and block 15, an oil-out is installed in the bottom of casing 14 and block 23, in order to make serviceability more stable, the thrust bush 27 being used for axial location can be set between large bearing 26 and little bearing 28, and make thrust bush 27 be enclosed within swash plate stationary shaft 25, on swash plate stationary shaft 25, also cover has the thrust gland bonnet 20 as location and sealing, and thrust gland bonnet 20 to be bolted on casing right end cap 19.
Claims (10)
1. a high pressure axial plunger pump Slipper coupling friction performance testing device, comprise casing (14), it is characterized in that: be respectively equipped with high-voltage oil cavity (22) and experiment closed chamber (24) in the left and right sides of casing (14), casing left end cap (13) and casing right end cap (19) are housed respectively at the two ends, left and right of casing (14), casing left end cap (13) is provided with the oil-feed connector for being connected with hydraulic control device and oil return connector; Thrust piston (16) is housed in high-voltage oil cavity (22), the piston rod end of thrust piston (16) is arranged in experiment closed chamber (24), the piston rod end of thrust piston (16) by coupling bolt (21) with test with the piston shoes (17) of composition Slipper coupling be connected; Swash plate stationary shaft (25) is arranged on casing right end cap (19) by large bearing (26) and little bearing (28), one end of swash plate stationary shaft (25) is arranged in experiment closed chamber (24), and the swash plate (18) of the composition Slipper coupling tested is bolted on this end, the other end of swash plate stationary shaft (25) is connected with the variable-frequency motor (30) controlled by frequency converter (31) by shaft coupling (29).
2. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 1, it is characterized in that: described hydraulic control device comprises the hydraulic pump (2) driven by motor (3), the working pressure oil that hydraulic pump (2) exports enters into high-voltage oil cavity (22) by oil pipe through the oil-feed connector of retaining valve (7) and casing left end cap (13), and the oily oil return connector through casing left end cap (13) of the working pressure in high-voltage oil cavity (22) also flows back to fuel tank through electricity liquid ratio relief valve (12).
3. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 2, it is characterized in that: be connected with the embedded control system (11) for controlling working pressure oil pressure at the control end of electricity liquid ratio relief valve (12), and in high-voltage oil cavity (22), the pressure of pressure oil is measured in real time by the pressure transducer (10) be connected on casing left end cap (13) oil-feed connector, and its transmitting measured values processs and displays in embedded control system (11).
4. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 3, is characterized in that: be also connected with an accumulator (8) at the oil-feed connector place of casing left end cap (13).
5. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 3, it is characterized in that: on the output oil pipe of hydraulic pump (2), be also connected with relief circuit, this relief circuit is made up of pilot operated compound relief valve (4) and bi-bit bi-pass solenoid directional control valve (5), the oil-in end of pilot operated compound relief valve (4) is communicated with by the output oil pipe of oil pipe with hydraulic pump (2), the control mouth end of pilot operated compound relief valve (4) is connected with the port often opening position of bi-bit bi-pass solenoid directional control valve (5), the oil-out of pilot operated compound relief valve (4) is all connected with fuel tank by oil pipe with another port often opening position of bi-bit bi-pass solenoid directional control valve (5), and the magnet control end of bi-bit bi-pass solenoid directional control valve (5) is connected with embedded control system (11) by wire.
6. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 5, is characterized in that: the pressure 20%-30% of the working pressure oil that the working pressure of pilot operated compound relief valve (4) exports higher than hydraulic pump (2).
7. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 2, it is characterized in that: be also provided with a tensimeter (6) at the delivery outlet end of hydraulic pump (2), the oil-in end of hydraulic pump (2) is communicated with fuel tank by filtrator (1).
8. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 4, is characterized in that: the connector end of accumulator (8) is connected with the oil-feed connector of casing left end cap (13) by stop valve (9).
9. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 1, is characterized in that: be provided with oil-in blocking (15) on the top of casing (14), is provided with oil-out blocking (23) in the bottom of casing (14).
10. high pressure axial plunger pump Slipper coupling friction performance testing device according to claim 1, it is characterized in that: between large bearing (26) and little bearing (28), be provided with the thrust bush (27) for axial location, and thrust bush (27) is enclosed within swash plate stationary shaft (25); On swash plate stationary shaft (25), also cover has the thrust gland bonnet (20) as location and sealing, and thrust gland bonnet (20) is bolted on casing right end cap (19).
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| CN201410581646.3A CN104458466A (en) | 2014-10-27 | 2014-10-27 | Friction performance testing device for slipper pair of high-pressure axial plunger pump |
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| CN201410581646.3A CN104458466A (en) | 2014-10-27 | 2014-10-27 | Friction performance testing device for slipper pair of high-pressure axial plunger pump |
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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 |
| CN106840629A (en) * | 2017-01-23 | 2017-06-13 | 太重集团榆次液压工业有限公司 | A kind of plunger piston slippery boots assembly durability test device |
| 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 |
| CN110455506A (en) * | 2019-07-19 | 2019-11-15 | 北京航空航天大学 | A kind of high pressure servo plunger pump key rubs secondary comprehensive test system and control method |
| CN111173725A (en) * | 2019-12-31 | 2020-05-19 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Device is verified in vice technological research of plunger pump key friction |
| CN112855514A (en) * | 2021-01-13 | 2021-05-28 | 浙江大学 | High-pressure high-speed hydraulic pump friction pair test bed based on double-swash-plate opposite-top driving |
| CN113847235A (en) * | 2021-10-09 | 2021-12-28 | 浙江大学 | Compound multi-sensor plunger pump piston shoe pair bearing characteristic simulation test mechanism |
| CN114152531A (en) * | 2021-11-25 | 2022-03-08 | 中铁工程装备集团有限公司 | Friction wear testing machine |
| CN114166676A (en) * | 2021-12-03 | 2022-03-11 | 中南大学 | Hydraulic pump flow distribution pair friction and wear testing device with online monitoring function |
| CN114199707A (en) * | 2021-11-04 | 2022-03-18 | 燕山大学 | Method and test device for simulating friction of piston shoe pair under high-speed and high-pressure working conditions of plunger pump |
| CN114623128A (en) * | 2022-03-31 | 2022-06-14 | 中南大学 | Hydraulic system for testing oil film characteristic of flow distribution pair of axial plunger pump |
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Cited By (17)
| 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 |
| 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 |
| CN106840629A (en) * | 2017-01-23 | 2017-06-13 | 太重集团榆次液压工业有限公司 | A kind of plunger piston slippery boots assembly durability test device |
| CN106840629B (en) * | 2017-01-23 | 2019-02-15 | 太重集团榆次液压工业有限公司 | A kind of plunger piston slippery boots assembly durability test device |
| 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 |
| CN110455506A (en) * | 2019-07-19 | 2019-11-15 | 北京航空航天大学 | A kind of high pressure servo plunger pump key rubs secondary comprehensive test system and control method |
| CN111173725B (en) * | 2019-12-31 | 2021-07-27 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Device is verified in vice technological research of plunger pump key friction |
| CN111173725A (en) * | 2019-12-31 | 2020-05-19 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Device is verified in vice technological research of plunger pump key friction |
| CN112855514A (en) * | 2021-01-13 | 2021-05-28 | 浙江大学 | High-pressure high-speed hydraulic pump friction pair test bed based on double-swash-plate opposite-top driving |
| CN113847235A (en) * | 2021-10-09 | 2021-12-28 | 浙江大学 | Compound multi-sensor plunger pump piston shoe pair bearing characteristic simulation test mechanism |
| CN114199707A (en) * | 2021-11-04 | 2022-03-18 | 燕山大学 | Method and test device for simulating friction of piston shoe pair under high-speed and high-pressure working conditions of plunger pump |
| CN114199707B (en) * | 2021-11-04 | 2024-04-05 | 燕山大学 | Method and test device for simulating friction of sliding shoe pair under high-speed high-pressure working condition of plunger pump |
| CN114152531A (en) * | 2021-11-25 | 2022-03-08 | 中铁工程装备集团有限公司 | Friction wear testing machine |
| CN114166676A (en) * | 2021-12-03 | 2022-03-11 | 中南大学 | Hydraulic pump flow distribution pair friction and wear testing device with online monitoring function |
| CN114166676B (en) * | 2021-12-03 | 2024-01-30 | 中南大学 | Hydraulic pump flow distribution pair friction and wear testing device with online monitoring function |
| CN114623128A (en) * | 2022-03-31 | 2022-06-14 | 中南大学 | Hydraulic system for testing oil film characteristic of flow distribution pair of axial plunger pump |
| CN114623128B (en) * | 2022-03-31 | 2022-12-23 | 中南大学 | Hydraulic system for testing oil film characteristics of flow distribution pair of axial plunger pump |
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Application publication date: 20150325 |