CN102606381B - Four-pointed star-shaped single-action piston cylinder offset type radial plunger motor - Google Patents
Four-pointed star-shaped single-action piston cylinder offset type radial plunger motor Download PDFInfo
- Publication number
- CN102606381B CN102606381B CN201110165274.2A CN201110165274A CN102606381B CN 102606381 B CN102606381 B CN 102606381B CN 201110165274 A CN201110165274 A CN 201110165274A CN 102606381 B CN102606381 B CN 102606381B
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- Prior art keywords
- plunger
- piston shoes
- bent axle
- piston
- main casing
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Abstract
The invention relates to a four-pointed star-shaped single-action piston cylinder offset type radial plunger motor. A main housing (18) is provided with four uniformly distributed plunger cylinders, the axis of each of the plunger cylinders has an offset (H) to the center line of a crankshaft (15), one end of a plunger (11) is a bulb in structure, the bulb of the plunger (11) is provided with a sliding shoe (13), the sliding shoe (13) is provided with a block (12) composed of two semicircles, the sliding shoe (13) on the outboard of the block (12) is provided with a spring clasp (7), the plunger (11) and the sliding shoe (13) are connected into one body through the spring clasp (7) and the block (12) to limit the bulb of the plunger (11) to rotating in a ball socket, the other end of the sliding shoe (13) contacts with the excircle of the eccentric wheel of the crankshaft (15), and the left end and the right end of the sliding shoe (13) are provided with retainer rings (17, 17') respectively to hoop the sliding shoe (13) on the surface of the excircle of the eccentric wheel of the crankshaft (15) and make the sliding shoe (13) slide on the surface of the excircle of the eccentric wheel of the crankshaft (15).
Description
Technical field
The present invention relates to the structure of piston cylinder radial plunger piston motor.
Background technique
Low speed high torque hydraulic motor extensive use in the various machineries of low speed, heavy duty.It adopts plunger type element mostly, has two kinds of axial piston and radial plunger types.Often transfer to and can divide single-acting formula and multiaction formula with number of times by it.In order to obtain low speed and large torque, adopt high pressure and large discharge capacity, its boundary dimension and volume and rotary inertia are all very large.The plunger case axis of existing single-acting link type radial plunger piston motor passes through crankshaft axis.Plunger and connecting rod adopt ball-joint, and the piston shoes surface of the other end of connecting rod contacts with the eccentric wheel cylindrical of bent axle.In the maintenance of oil hydraulic motor, find to occur, while leakage, seize to occur when the piston shoes part of connecting rod, cannot rotate.Recover behind piston shoes surface by patching, the probability that oil hydraulic motor is resumed work is very low, occurs again that leaking appears in piston shoes part while often making oil hydraulic motor band carry, and seize occurs.Through great many of experiments analysis, reason is to repair behind piston shoes surface, very difficult recovery makes the axis of connecting rod just in time by the symmetry center on piston shoes surface, cause the relative connecting rod ball pivot of hydraulic coupling center asymmetric, under the effect of high pressure oil, cause unbalance loading, make the relative slip surface of sealing surface of piston shoes produce gap, leakage of oil occurs, and the instantaneous piston shoes sealing surface that makes of high pressure oil is destroyed, and seize occurs.
Summary of the invention
The object of this invention is to provide a kind of four stars single-action piston cylinder polarization type radial plunger motor.
The present invention is four stars single-action piston cylinder polarization type radial plunger motor, bent axle 15 is housed in main casing 18, bent axle 15 one end by clutch shaft bearing 6 in the interior location of main casing 18, bent axle 15 the other ends are located by the second bearing being contained on the front cover 16 of main casing 18 front ends, front cover 16 is fixed on main casing 18 front ends, on main casing 18, there are four equally distributed plunger cases, the axis of each plunger case has a side-play amount H apart from the center line of bent axle 15, one end of plunger 11 is ball head structure, piston shoes 13 are installed on the bulb of plunger 11, the block 12 of two semicircle compositions is housed on piston shoes 13, on the piston shoes 13 in block 12 outsides, spring arch clasp 7 is housed, by spring arch clasp 7 and block 12, plunger 11 and piston shoes 13 are connected as one, the bulb of plunger 11 is limited in ball-and-socket to rotate, the other end of piston shoes 13 contacts with the eccentric wheel cylindrical of bent axle 15.The left end of piston shoes 13 has one first back-up ring 17, and the right-hand member of piston shoes 13 has one second back-up ring, by the first back-up ring 17, the second back-up rings, piston shoes 13 is bound round on the eccentric wheel outer round surface of bent axle 15, and piston shoes 13 can be slided at the eccentric wheel outer round surface of bent axle 15.
The present invention adopts and makes plunger and Machining of Connecting Rod is an entirety, and adopt ball-joint with piston shoes, the other end of piston shoes contacts with the eccentric wheel cylindrical of bent axle, shorten the distance of the centre of sphere to piston shoes surface, be easy to like this ensure the symmetrical piston shoes centre of sphere of hydraulic action of piston shoes surface generation, unbalance loading has not occurred, the sealing surface of piston shoes is contacted with slip plane all the time, ensure good slipping property, reduce piston shoes manufacture difficulty, the increase of oil hydraulic motor life-span, processing, the maintenance difficulty of this type are reduced.
Brief description of the drawings
Fig. 1 is the structural drawing of four stars single-action piston cylinder polarization type radial plunger motor, Fig. 2 is that the A-A of pintle is to sectional drawing, Fig. 3 is that the B-B of pintle is to sectional drawing, Fig. 4 is that the C-C of pintle is to sectional drawing, Fig. 5 is that the D-D of pintle is to sectional drawing, Fig. 6 be the E-E of pintle to sectional drawing, Fig. 6 is that L-L in Fig. 1 is to sectional drawing.
Embodiment
As shown in Figure 1, four stars single-action piston cylinder polarization type radial plunger motor of the present invention, comprises main casing 18, bent axle 15, clutch shaft bearing 6, the second bearings, four plunger 11a, 11b, 11c, 11d, four piston shoes 13a, 13b, 13c, 13d, pintle 5, pintle housing 2, front cover 16 and rear end cover 4 main parts size form.Profile of the present invention is four stars shape, has four equally distributed plunger cases on main casing 18, and as shown in Figure 7, the axis of each plunger case has a side-play amount H apart from the center line of bent axle 15; As shown in Figure 1, the outside of plunger case is provided with cylinder barrel flange 8, cylinder barrel flange 8 is fixed on main casing 18 by screw 9, bent axle 15 is housed in main casing 18, bent axle 15 one end by clutch shaft bearing 6 in the interior location of main casing 18, bent axle 15 the other ends are located by the second bearing being contained on the front cover 16 of main casing 18 front ends, and front cover 16 is fixed on main casing 18 front ends by screw 14.Plunger 11 is housed in the plunger case on main casing 18, two seal rings 10 are housed on plunger 11 circumference.One end of plunger 11 is ball head structure, piston shoes 13 are installed on the bulb of plunger 11, the block 12 of two semicircle compositions is housed on piston shoes 13, on the outside of block 12 piston shoes 13, spring arch clasp 7 is housed, by spring arch clasp 7 and block 12, plunger 11 and piston shoes 13 are connected as one, the bulb of plunger 11 are limited in ball-and-socket and rotate.The other end of piston shoes 13 contacts with the eccentric wheel cylindrical of bent axle 15.The left end of piston shoes 13 has one first back-up ring 17, the right-hand member of piston shoes 13 has one second back-up ring, by the first back-up ring 17, the second back-up ring binds round piston shoes 13 on the eccentric wheel outer round surface of bent axle 15, piston shoes 13 can be slided at the eccentric wheel outer round surface of bent axle 15, but can not depart from the eccentric wheel outer round surface of bent axle 15.On main casing 18, be fixed with pintle housing 2 by screw 1, one end of pintle housing 2 is by the fixing rear end cover 4 of screw 3, and pintle 5 is contained in pintle housing 2, and pintle 5 is coaxially connected with bent axle 15, drives pintle 5 synchronous rotaries by bent axle 15.On pintle housing 2, have working oil oil duct P and I.
On main casing 18, have four oil ducts, one end leads at each plunger case pumping cavity, and the other end communicates with four oil ducts on pintle housing 2 respectively.
As shown in Figure 7, the span of side-play amount H is: 0<H<60mm.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, pintle is divided into equilibrium oil district, oil distributing zone, working oil district.Cross section A-A, E-E are equilibrium oil district, and C-C is oil distributing zone, and B-B, D-D are working oil district.The annular chamber M of B-B section communicates with the semi-annular chambers F in the oil distributing zone of C-C section, the annular chamber N of D-D section communicates with the semi-annular chambers G in the oil distributing zone of C-C section, F chamber in oil distributing zone respectively with the semi-annular chambers K in A-A, E-E section equilibrium oil district, K ' communicates, G chamber in oil distributing zone respectively with the semi-annular chambers J in A-A, E-E section equilibrium oil district, J ' communicates.When pintle rotation, the annular chamber M of B-B section communicates with the working oil oil duct P on pintle housing 2 all the time, and the annular chamber N of D-D section communicates with the working oil oil duct I on pintle housing 2 all the time.
As shown in Figure 1, in piston shoes 13 and plunger 11, be all processed with damping hole, this damping hole is communicated with plunger case and piston shoes 13 bottom t, hydraulic oil keeps pressure balance between piston shoes 13 and plunger 11, promoting bent axle 15 by pressure oil rotates, allow 15, the relative bent axle of piston shoes 13 play the seal action of pressure oil, not as main force transfer element.
Working procedure of the present invention is:
In the time that P mouth connects high-pressure oil pipe and I mouth and connects low pressure fuel pipe, the high pressure oil of P mouth enters the annular chamber M in pintle working oil district, entered the semi-annular chambers F of oil distributing zone by annular chamber M, at this moment semi-annular chambers F delivers to respectively plunger 11a by two oil ducts on pintle housing 2 and main casing 18 by pressure oil, the top pumping cavity of 11d, by plunger 11 and the damping hole on piston shoes 13, high pressure oil is introduced to the pressure balance chamber on piston shoes 13, act on bent axle 15 eccentric wheel cylindricals simultaneously, plunger 11a, 11d is subject to high pressure oil effect, inwardly move along plunger case, it is large that pumping cavity volume becomes, under the eccentric effect of bent axle 15, make plunger 11b by piston shoes 13, 11c outwards moves along plunger case, pumping cavity smaller volume, pumping cavity fluid enters the semi-annular chambers G of pintle oil distributing zone by two the corresponding oil ducts on corresponding two oil ducts and pintle housing 2 on main casing 18, entered the annular chamber N in working oil district by semi-annular chambers G, due to annular chamber N all the time with pintle housing 2 on hydraulic fluid port I communicate, at this moment plunger 11b, the pumping cavity fluid of 11c flows out by hydraulic fluid port I.So high pressure oil acts on the active force of plunger 11a and 11d
fact on bent axle 15 by piston shoes 13, to the rotating center of bent axle
oform torque
t,bent axle is rotation counterclockwise.Along with bent axle 15 is in torque
teffect under rotate, because pintle 5 is coaxially connected with bent axle 15, so phase preserving is consistent all the time for the eccentric wheel of pintle 5 and bent axle 15, therefore outwards the plunger working oil chamber of motion keeps connecing low pressure fuel pipe connection with I mouth, and inwardly the plunger working oil chamber of motion keeps connecing low pressure fuel pipe connection with P mouth.Each plunger case will communicate with high pressure oil-feed and low pressure oil return successively, ensures bent axle continuous rotation.If oil inlet and oil return mouth exchanges, oil hydraulic motor reversion.
Claims (3)
1. four stars single-action piston cylinder polarization type radial plunger motor, bent axle (15) is housed in main casing (18), bent axle (15) one end is located in main casing (18) by clutch shaft bearing (6), bent axle (15) the other end is by the second bearing location being contained on the front cover (16) of main casing (18) front end, front cover (16) is fixed on main casing (18) front end, it is characterized in that on main casing (18), there are four equally distributed plunger cases, the axis of each plunger case has a side-play amount H apart from the center line of bent axle (15), one end of plunger (11) is ball head structure, piston shoes (13) are installed on the bulb of plunger (11), the block (12) of two semicircle compositions is housed on piston shoes (13), on the piston shoes (13) in block (12) outside, spring arch clasp (7) is housed, by spring arch clasp (7) and block (12), plunger (11) and piston shoes (13) are connected as one, the bulb of plunger (11) is limited in ball-and-socket to rotate, the other end of piston shoes (13) contacts with the eccentric wheel cylindrical of bent axle (15), the left end of piston shoes (13) has one first back-up ring (17), the right-hand member of piston shoes (13) has one second back-up ring, by the first back-up ring (17), the second back-up ring binds round piston shoes (13) on the eccentric wheel outer round surface of bent axle (15), and piston shoes (13) can be slided at the eccentric wheel outer round surface of bent axle (15).
2. four stars single-action piston cylinder polarization type radial plunger motor according to claim 1, is characterized in that the span of side-play amount H is: 0<H<60mm.
3. four stars single-action piston cylinder polarization type radial plunger motor according to claim 1, it is characterized in that being all processed with damping hole in piston shoes (13) and plunger (11), this damping hole is communicated with plunger case and piston shoes (13) bottoms (t), hydraulic oil keeps pressure balance between piston shoes (13) and plunger (11), promote bent axle (15) rotation by pressure oil, allow the relative bent axle (15) of piston shoes (13) only play the seal action of pressure oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165274.2A CN102606381B (en) | 2011-06-16 | 2011-06-16 | Four-pointed star-shaped single-action piston cylinder offset type radial plunger motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165274.2A CN102606381B (en) | 2011-06-16 | 2011-06-16 | Four-pointed star-shaped single-action piston cylinder offset type radial plunger motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102606381A CN102606381A (en) | 2012-07-25 |
| CN102606381B true CN102606381B (en) | 2014-10-15 |
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ID=46524065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110165274.2A Expired - Fee Related CN102606381B (en) | 2011-06-16 | 2011-06-16 | Four-pointed star-shaped single-action piston cylinder offset type radial plunger motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606381B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545729B (en) * | 2016-12-09 | 2018-10-09 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of radial direction damping unit |
| CN111946580B (en) * | 2020-08-25 | 2021-04-09 | 兰州理工大学 | Digital variable hydraulic motor radial plunger pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU861714A1 (en) * | 1979-12-25 | 1981-09-07 | За витель | Radial piston hydraulic engine |
| DE3505176C1 (en) * | 1985-02-15 | 1986-04-24 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co Kg, 4300 Essen | Radial-piston pump for hydraulic media |
| CN86200564U (en) * | 1986-02-26 | 1987-02-11 | 上海试验机厂 | Radial radiation seven-piston-pump used in universal testing machine |
| US5131818A (en) * | 1991-05-07 | 1992-07-21 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co. Kg | High-pressure water pump having a polyetheretherketone cylinder bushing for pure water |
| JP4202832B2 (en) * | 2002-06-10 | 2008-12-24 | 株式会社荏原製作所 | Axial piston pump or motor |
| CN101713298A (en) * | 2009-11-05 | 2010-05-26 | 昆山金发液压机械有限公司 | Hydraulic motor provided with friction pair with nanometer graphite layer and method for processing nanometer graphite layer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60224979A (en) * | 1984-04-21 | 1985-11-09 | Fukushima Seisakusho:Kk | Variable capacity radial piston motor controller |
-
2011
- 2011-06-16 CN CN201110165274.2A patent/CN102606381B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU861714A1 (en) * | 1979-12-25 | 1981-09-07 | За витель | Radial piston hydraulic engine |
| DE3505176C1 (en) * | 1985-02-15 | 1986-04-24 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co Kg, 4300 Essen | Radial-piston pump for hydraulic media |
| CN86200564U (en) * | 1986-02-26 | 1987-02-11 | 上海试验机厂 | Radial radiation seven-piston-pump used in universal testing machine |
| US5131818A (en) * | 1991-05-07 | 1992-07-21 | Hauhinco Maschinenfabrik G. Hausherr, Jochums Gmbh & Co. Kg | High-pressure water pump having a polyetheretherketone cylinder bushing for pure water |
| JP4202832B2 (en) * | 2002-06-10 | 2008-12-24 | 株式会社荏原製作所 | Axial piston pump or motor |
| CN101713298A (en) * | 2009-11-05 | 2010-05-26 | 昆山金发液压机械有限公司 | Hydraulic motor provided with friction pair with nanometer graphite layer and method for processing nanometer graphite layer |
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| Publication number | Publication date |
|---|---|
| CN102606381A (en) | 2012-07-25 |
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