CN102606380B - Offset type radial plunger motor of eight-star single-action piston cylinder - Google Patents
Offset type radial plunger motor of eight-star single-action piston cylinder Download PDFInfo
- Publication number
- CN102606380B CN102606380B CN201110165273.8A CN201110165273A CN102606380B CN 102606380 B CN102606380 B CN 102606380B CN 201110165273 A CN201110165273 A CN 201110165273A CN 102606380 B CN102606380 B CN 102606380B
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- Prior art keywords
- plunger
- piston shoes
- piston
- bent axle
- main casing
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Abstract
The invention provides an offset type radial plunger motor of an eight-star single-action piston cylinder. Eight uniformly-distributed plunger cylinders are mounted on a main shell (18); an offset (H) exists between an axis of each plunger cylinder and a center line of a crank (15); cylinder flanges (8) are mounted at the outer sides of the plunger cylinders; plungers (11) are mounted in the plunger cylinders on the main shell (18); two sealing rings (10) are mounted on the circumference of each plunger (11); a piston shoe (13) is mounted on a bulb of each plunger; a stopping block (12) formed by two semicircular shapes is mounted on each piston shoe (13); a spring clamping ring (7) is mounted on each piston shoe (13) at the outer side of the stopping block (12); the plungers (11) and the piston shoes (13) are integrally linked through the spring clamping rings (7) and the stopping blocks (12); the other end of each piston shoes (13) is in contact with the outer circle of an eccentric wheel of the crank (15); and the left end and the right end of each slipper (13) are respectively provided with retainer rings (17 and 17'), and the piston shoes (13) are clamped on the surface of the outer circle of the eccentric wheel of the crank (15) through the retainer rings (17 and 17').
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.By it, often transfer to number of times and can divide single-acting formula and multiaction formula.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, when the piston shoes of connecting rod partly occur leaking, seize to occur, cannot rotate.By patching, recover behind piston shoes surface, the probability that oil hydraulic motor is resumed work is very low, occurs again that leaking partly appears in piston shoes 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 eight star single-action piston cylinder polarization type radial plunger motors.
The present invention is eight star single-action piston cylinder polarization type radial plunger motors, 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 eight 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, the outside of plunger case is provided with cylinder barrel flange 8, cylinder barrel flange 8 is fixed on main casing 18, 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, two semicircle blocks 12 that form are 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 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, and 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.
The present invention adopts and makes plunger and Machining of Connecting Rod is an integral body, and adopt ball-joint with piston shoes, the other end of piston shoes contacts with the eccentric wheel cylindrical of bent axle, shortened the distance of the centre of sphere to piston shoes surface, be easy to like this guarantee 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, guarantee 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.
Accompanying drawing explanation
Fig. 1 is the structural drawing of eight star single-action piston cylinder polarization type radial plunger motors, 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. 7 is that L-L in Fig. 1 is to sectional drawing.
Embodiment
As shown in Figure 1, eight star single-action piston cylinder polarization type radial plunger motors of the present invention, comprise main casing 18, bent axle 15, clutch shaft bearing 6, the second bearing, eight plunger 11a, 11b, 11c, 11d, 11e, 11f, 11g, 11h, eight piston shoes 13a, 13b, 13c, 13d, 13e, 13f, 13g, 13h, pintle 5, pintle housing 2, front cover 16 and rear end cover 4.It is eight starlike that profile of the present invention is, and has eight equally distributed plunger cases on main casing 18, and the axis of each plunger case has a side-play amount H apart from the center line of bent axle 15.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, two semicircle blocks 12 that form are 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 and rotates, can not separate.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, by screw 1, be fixed with pintle housing 2, fixedly rear end cover 4 of screw 3 is passed through in one end of pintle housing 2, and pintle 5 is contained in pintle housing 2, and pintle 5 is coaxially connected with bent axle 15, by bent axle 15, drives pintle 5 synchronous rotaries.On pintle housing 2, have working oil oil duct P and I.
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, have eight oil ducts on main casing 18, one end leads at each plunger case pumping cavity, and the other end communicates with eight oil ducts on pintle housing 2 respectively.Pintle is divided into equilibrium oil district, oil distributing zone, working oil district.Cross section A-A, E-EWei equilibrium oil district, C-C is oil distributing zone, B-B, D-DWei 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.During 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, 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, by pressure oil, promote bent axle 15 rotations, allow 15 seal actions that play pressure oil of the relative bent axle of piston shoes 13, not as main force transfer element.
Working procedure of the present invention is:
When 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, by annular chamber M, entered the semi-annular chambers F of oil distributing zone, at this moment semi-annular chambers F delivers to respectively plunger 11a by four oil ducts on pintle housing 2 and main casing 18 by pressure oil, 11b, 11g, the top pumping cavity of 11h, 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, 11b, 11g, 11h is subject to high pressure oil effect, along plunger case, inwardly move, it is large that pumping cavity volume becomes, under the eccentric effect of bent axle 15, by piston shoes 13, make plunger 11c, 11d, 11e, 11f outwards moves along plunger case, pumping cavity smaller volume, pumping cavity fluid enters the semi-annular chambers G of pintle oil distributing zone by four the corresponding oil ducts on corresponding four oil ducts and pintle housing 2 on main casing 18, by semi-annular chambers G, entered the annular chamber N in working oil district, due to annular chamber N all the time with pintle housing 2 on hydraulic fluid port I communicate, at this moment plunger 11c, 11d, 11e, the pumping cavity fluid of 11f flows out by hydraulic fluid port I.So high pressure oil acts on the active force of plunger 11a, 11b, 11g and 11h
fby piston shoes 13, act on bent axle 15, the rotating center to bent axle
oform torque
t,bent axle counterclockwise rotates.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 the plunger working oil chamber outwards moving keeps connecing low pressure fuel pipe with I mouth to be connected, and the plunger working oil chamber inwardly moving keeps connecing low pressure fuel pipe with P mouth and connects.Each plunger case will communicate with high pressure oil-feed and low pressure oil return successively, guarantees bent axle continuous rotation.If oil inlet and oil return mouth exchanges, oil hydraulic motor reversion.
Claims (3)
1. eight star single-action piston cylinder polarization type radial plunger motors, 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 eight 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), the outside of plunger case is provided with cylinder barrel flange (8), cylinder barrel flange (8) is fixed on main casing (18), plunger (11) is housed in the plunger case on main casing (18), on plunger (11) circumference, two seal rings (10) are housed, one end of plunger (11) is ball head structure, piston shoes (13) are installed on the bulb of plunger (11), two semicircle blocks (12) that form are 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) 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).
2. eight star single-action piston cylinder polarization type radial plunger motors according to claim 1, is characterized in that the span of side-play amount H is: 0<H<60mm.
3. eight star single-action piston cylinder polarization type radial plunger motors according to claim 1, it is characterized in that being all processed with damping hole in piston shoes (13) and plunger (11), damping hole is communicated with plunger case and piston shoes (13) bottoms (t), and hydraulic oil keeps pressure balance between piston shoes (13) and plunger (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165273.8A CN102606380B (en) | 2011-06-16 | 2011-06-16 | Offset type radial plunger motor of eight-star single-action piston cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110165273.8A CN102606380B (en) | 2011-06-16 | 2011-06-16 | Offset type radial plunger motor of eight-star single-action piston cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102606380A CN102606380A (en) | 2012-07-25 |
| CN102606380B true CN102606380B (en) | 2014-10-15 |
Family
ID=46524064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110165273.8A Expired - Fee Related CN102606380B (en) | 2011-06-16 | 2011-06-16 | Offset type radial plunger motor of eight-star single-action piston cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606380B (en) |
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 CN201110165273.8A patent/CN102606380B/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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102606380A (en) | 2012-07-25 |
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