CN102174924B - Swing-cylinder hydraulic motor - Google Patents
Swing-cylinder hydraulic motor Download PDFInfo
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- CN102174924B CN102174924B CN 201110056441 CN201110056441A CN102174924B CN 102174924 B CN102174924 B CN 102174924B CN 201110056441 CN201110056441 CN 201110056441 CN 201110056441 A CN201110056441 A CN 201110056441A CN 102174924 B CN102174924 B CN 102174924B
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- groove
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- tilt cylinder
- oil distribution
- distribution casing
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Abstract
The invention discloses a swing-cylinder hydraulic motor which comprises a shell and a shell cover, wherein the side edge of the shell cover is provided with an oil flowing disc and an oil distribution disc; a first concave hole and a second concave hole are respectively arranged in the shell and the shell cover; two ends of a swing cylinder are respectively provided with a first shaft end and a second shaft end; the first shaft end and the second shaft end are both penetratively arranged in the first concave hole and the second concave hole; the end part of the oil distribution disc is provided with an annular groove; the bottom of a constricting groove of the annular groove is provided with an O-shaped seal ring, a seal ring and a gasket; the oil distribution disc is provided with a first oil chamber and a second oil chamber; the first oil chamber and the second oil chamber are both of a groove; the end surface of the oil distribution disc and the lateral wall of the first oil chamber are provided with an arc-shaped transitional surface respectively; and the end surface of the oil distribution disc and the lateral wall of the second oil chamber are both provided with an arc-shaped transitional surface. In the invention, an oil-sealed transitional belt is combined with the arc-shaped transitional surfaces so that the oil flowing area is gradually changed, therefore the vibration noise is reduced, and the service life of the oil distribution disc can be prolonged at the same time.
Description
Technical field
The present invention relates to a kind of liquid motor, relate in particular to a kind of tilt cylinder type hydraulic motor.
Background technique
As the critical piece that provides in the high-torque hydraulic system, the quality of radial plunger type motor is the machine work efficient of impact under actual conditions directly.It can reliablely and stablely be worked under very low rotating speed, can directly connect with the operation mechanism that is connected low-speed running, complete machine structure is simplified, also has the advantage that efficient is high and the life-span is long, so larger development is arranged in recent years, is widely used in the hydraulic system of light industry and machinery, engineering machinery, mining machinery, handling machinery, ship deck machinery and farm machinery etc.
Tilt cylinder type hydraulic motor is a kind of in the radial plunger piston motor.It has the advantage while of radial plunger piston motor, the characteristics that also have oneself on the structure: do not have lateral force between tilt cylinder and the bent axle, piston base is designed to static balance, pass through the rolling bearing power transmission between piston and the bent axle, these measures have all reduced the frictional loss in the power transmission process, thereby have improved the hydraulic machinery efficient, particularly starting state of this motor, its hydraulic machinery efficient can reach 0.90, so detent torque is very large.Adopt besides this technology of valve plate distribution, leakage is greatly reduced, improved reliability.In addition, adopt the plastic piston ring sealing between piston and the tilt cylinder, can reach almost without leakage, thereby also greatly improve volumetric efficiency.
The axis of tilt cylinder and piston is the center by crankshaft bearing bush all the time, thereby tilt cylinder and piston are without lateral force, high pressure oil enters the oil distribution casing that rotates with bent axle from the filler opening of logical food tray, and enter piston top through housing runner and tilt cylinder earrings place and enter piston bottom counter balance pocket through throttling pore again, lead to the piston of high pressure oil this moment under the oil pressure effect, by sphere bearing case and roller power is delivered on the eccentric shaft, bent axle rotates under the eccentric moment effect, along with high pressure oil enters, piston to axis direction move until lower dead centre extremely, piston cavity begins to connect with return opening by oil distribution casing, piston pushed away from axis direction and moved under the promotion of bent axle this moment, and the piston cavity volume reduces, and low pressure oil is through tilt cylinder earrings place passage, the housing runner, oil distribution casing, logical food tray is discharged to return opening, and each piston is connected high pressure and low pressure according to this, the in the same way addition of driving moment that the piston of each logical high pressure produces the output shaft center obtains to stablize continuously rotary torque with regard to making hydraulic motor output shaft.When changing oily flow path direction, just can change turning to of oil hydraulic motor, if thrust plate is turned over 180 degree assemblings, also can realize the counter-rotating of oil hydraulic motor
This tilt cylinder type hydraulic motor finds that after long-time the use seal ring of logical food tray and oil distribution casing joint very easily weares and teares, thereby causes hydraulic fluid leak, affects the use of tilt cylinder type hydraulic motor.In addition when oil distribution casing rotation, the zone of high pressure enters low pressure area after by the oil sealing transition zone, so that the low pressure tilt cylinder enters high pressure, the long-pending flip-flop build-up of pressure pulsation of the logical pasta of this process produces vibrating noise.
Summary of the invention
The purpose of this invention is to provide a kind of not easy to wearly, and be difficult for occuring the tilt cylinder type hydraulic motor of noise when oil distribution casing rotation.
For realizing this purpose, the present invention is solved by following technical proposals: a kind of tilt cylinder type hydraulic motor, comprise housing and cap, the oil distribution casing that the side of described cap is provided with logical food tray and rotates with bent axle, be provided with filler opening on the described logical food tray, be provided with the first oil inlet passage that filler opening is connected on the described oil distribution casing, be respectively arranged with the first shrinkage pool and the second shrinkage pool in described housing and the cap, a tilt cylinder is positioned at housing and cap, and the two ends of described tilt cylinder have respectively the first axle head and the second axle head, and described the first axle head and the second axle head all are located in the first shrinkage pool and the second shrinkage pool, it is characterized in that, the end of described oil distribution casing is provided with circular groove, described circular groove comprises a narrow contracting groove and expansion groove, has a step between described narrow contracting groove and the expansion groove, the narrow contracting groove bottom of described circular groove is provided with " O " shape seal ring, the step place of described circular groove is provided with seal ring, be provided with pad between described seal ring and the logical food tray, one sidewall of described pad and seal ring close contact, another sidewall and logical food tray close contact, described oil distribution casing is provided with the first oil pocket and the second oil pocket, described the first oil pocket and the second oil pocket are a groove, the sidewall of the end face of described oil distribution casing and the first oil pocket has arc transiting surface, and the sidewall of the end face of described oil distribution casing and the second oil pocket also has arc transiting surface.
In the technique scheme, the mode with interference fit in described the first shrinkage pool and the second shrinkage pool is equipped with axle sleeve, and the first axle head and second axle head of described tilt cylinder all are located in the axle sleeve.
In the technique scheme, the madial wall of described axle sleeve is provided with the first groove of circumferentially extending on three edges and one along axially extended the second groove of axle sleeve, and the second groove links into an integrated entity three the first grooves.
In the technique scheme, the groove width of described the first groove and the second groove is 0.28～0.32 mm, and groove depth is 0.48～0.52 mm.
The present invention compared with prior art, have following beneficial effect: 1) the present invention adds arc transiting surface at the end face (also being the oil sealing transition zone) of described oil distribution casing, allow logical pasta amass gradually and change, thereby reduce vibrating noise, the life-span that can also improve oil distribution casing simultaneously.
2) the present invention has additional seal ring and pad, and protection " O " shape seal ring is not rubbed in rotary course when playing seal action.Pad is processed easily, and can be wear-resisting withstand voltage, changes simple.
Description of drawings
Fig. 1 structural representation plan view of the present invention.
Fig. 2 is left view shown in Figure 1.
Fig. 3 is the longitudinal section that oil distribution casing and logical food tray cooperatively interact.
Fig. 4 is the partial enlarged drawing that oil distribution casing and logical food tray cooperatively interact.
Fig. 5 is oil distribution casing assembly schematic representation.
Fig. 6 is the structural representation of oil distribution casing.
Fig. 7 be among Fig. 6 A-A to sectional view.
Fig. 8 is the structural representation of oil distribution casing motion, and a wherein hole of logical food tray is just being produced in the oil distribution casing zone of high pressure.
Fig. 9 is the structural representation of oil distribution casing motion, and the oil distribution casing low pressure area is just changing a wherein hole of logical food tray over to.
Figure 10 is the structural representation of blowout patche.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Referring to Fig. 1～10, described tilt cylinder type hydraulic motor comprises the oil distribution casing 9 that housing 1 and the cap 3 of mutual amalgamation, the side of described cap 3 are provided with logical food tray 7 and rotate with bent axle.Be provided with the described filler opening 70 of filler opening 70(on the described logical food tray 7 and be in communication with the outside, not shown), be provided with the first oil inlet passage 90 that is connected with filler opening 70 on the described oil distribution casing 9.
Be respectively arranged with the first shrinkage pool 10 and the second shrinkage pool 30 in described housing 1 and the cap 3, mode with interference fit in described the first shrinkage pool 10 and the second shrinkage pool 30 is equipped with axle sleeve 11, a tilt cylinder 5 is positioned at housing 1 and cap 3, and the two ends of described tilt cylinder 5 have respectively the first axle head 50 and the second axle head 52, and the first axle head 50 of this tilt cylinder 5 and the second axle head 52 all are located in the axle sleeve 11.For the present invention, axle sleeve must possess good wear resistance, excellent mechanical property.Have found that axle sleeve 11 adopts the GCr15 Bearing Steel can satisfy preferably usage requirement.
Because in order to reduce manufacture cost, described housing 1 and cap 3 adopt the iron casting moulding, then heat-treat.Therefore housing 1 of the prior art and cap 3 are easy to wearing and tearing, and the present invention is equipped with axle sleeve in the mode of interference fit and has then well solved this problem in the first shrinkage pool 10 and the second shrinkage pool 30.Housing 1 does not directly contact with tilt cylinder 5 with cap 5, and is therefore not easy to wear, even therefore housing 1 adopts comparatively cheap material also to have very long working life with cap 3.After wearing and tearing appear in axle sleeve 11, only need replacing axle sleeve 11 to get final product in addition, thereby greatly reduce the user cost of tilt cylinder type hydraulic motor.
The madial wall of described axle sleeve 11 is provided with the first groove 110 of circumferentially extending on three edges and one along axle sleeve 11 axially extended the second grooves 112, and the second groove 112 links into an integrated entity three the first grooves 110, forms " king " word (concrete shape is seen Figure 10).The groove width of described the first groove 110 and the second groove 112 is 0.28～0.32 mm, and groove depth is 0.48～0.52 mm, and the present invention is set to groove width 0.3mm, groove depth 0.5mm.Through test; this king's word groove also namely the size of the groove width of the first groove 110 and the second groove 112 and groove depth so that the first axle head 50 and the second axle head 52 reach static balance with the shaft room oil film; the first axle head 50 and the second axle head 52 to tilt cylinder 5 play the surge protection effect, lower frictional loss to improve mechanical efficiency.
See Fig. 4, the end of described oil distribution casing 9 is provided with circular groove 92, described circular groove 92 comprises a narrow contracting groove 920 and expansion groove 922, has a step 924 between described narrow contracting groove 920 and the expansion groove 922, narrow contracting groove 920 bottoms of described circular groove 92 are provided with " O " shape seal ring 13, step 924 places of described circular groove 92 are provided with seal ring 15, are provided with pad 17 between described seal ring 15 and the logical food tray 7.The parallelism of described pad 17 is 0.01mm, the parallelism of described pad 17 is arranged to 0.01mm can makes pad 17 have good mechanical seal, a sidewall of described pad 17 and seal ring 15 close contacts, another sidewall and logical food tray 7 close contacts.
After increasing seal ring 15 and pad 17, when the first oil pocket 94 be the zone of high pressure, " O " shape seal ring 13 and seal ring 15 compress oil distribution casing 9 pads 17 together with high pressure oil, protect " O " shape seal ring 13 not rubbed in rotary course when playing seal action.When the second oil pocket 96 the same for high pressure oil plays a role.Pad 17 is processed easily, and can be wear-resisting withstand voltage, changes simple.
Described oil distribution casing 9 is provided with the first oil pocket 94 and the second oil pocket 96, described the first oil pocket 94 and the second oil pocket 96 are a groove, the end face of described oil distribution casing 9 (also being oil sealing transition zone 95) has arc transiting surface 940 with the sidewall of the first oil pocket 94, and the sidewall of the end face of described oil distribution casing 9 and the second oil pocket 96 also has the arc transiting surface (not shown).When the first oil pocket 94 is the zone of high pressure, oil distribution casing 9 rotations, the zone of high pressure enters low pressure area after by oil sealing transition zone 95, so that tilt cylinder 5 enters high pressure conditions by low-pressure state, the long-pending flip-flop build-up of pressure pulsation of the logical pasta of this process produces vibrating noise.Add arc transiting surface 940 in oil sealing transition zone 95, allow logical pasta amass gradually and change, thereby reduce vibrating noise, the life-span that can also improve oil distribution casing 9 simultaneously.
Claims (4)
1. tilt cylinder type hydraulic motor, comprise housing (1) and cap (3), the oil distribution casing (9) that the side of described cap (3) is provided with logical food tray (7) and rotates with bent axle, be provided with filler opening (70) on the described logical food tray (7), be provided with the first oil inlet passage (90) that filler opening (70) is connected on the described oil distribution casing (9), be respectively arranged with the first shrinkage pool (10) and the second shrinkage pool (30) in described housing (1) and the cap (3), a tilt cylinder (5) is positioned at housing (1) and cap (3), and the two ends of described tilt cylinder (5) have respectively the first axle head (50) and the second axle head (52), and described the first axle head (50) and the second axle head (52) all are located in the first shrinkage pool (10) and the second shrinkage pool (30), it is characterized in that, the end of described oil distribution casing (9) is provided with circular groove (92), described circular groove (92) comprises a narrow contracting groove (920) and expansion groove (922), has a step (924) between described narrow contracting groove (920) and the expansion groove (922), narrow contracting groove (920) bottom of described circular groove (92) is provided with " O " shape seal ring (13), the step (924) of described circular groove (92) locates to be provided with seal ring (15), be provided with pad (17) between described seal ring (15) and the logical food tray (7), one sidewall of described pad (17) and seal ring (15) close contact, another sidewall and logical food tray (7) close contact, described oil distribution casing (9) is provided with the first oil pocket (94) and the second oil pocket (96), described the first oil pocket (94) and the second oil pocket (96) are a groove, the sidewall of the end face of described oil distribution casing (9) and the first oil pocket (94) has arc transiting surface (940), and the sidewall of the end face of described oil distribution casing (9) and the second oil pocket (96) also has arc transiting surface.
2. tilt cylinder type hydraulic motor as claimed in claim 1, it is characterized in that, mode with interference fit in described the first shrinkage pool (10) and the second shrinkage pool (30) is equipped with axle sleeve (11), and the first axle head (50) and second axle head (52) of described tilt cylinder (5) all are located in the axle sleeve (11).
3. tilt cylinder type hydraulic motor as claimed in claim 2, it is characterized in that, the madial wall of described axle sleeve (11) is provided with the first groove (110) of circumferentially extending on three edges and one along axially extended the second groove of axle sleeve (11) (112), and the second groove (112) links into an integrated entity three the first grooves (110).
4. tilt cylinder type hydraulic motor as claimed in claim 3 is characterized in that, the groove width of described the first groove (110) and the second groove (112) is 0.28～0.32 mm, and groove depth is 0.48～0.52 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110056441 CN102174924B (en) | 2011-03-10 | 2011-03-10 | Swing-cylinder hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110056441 CN102174924B (en) | 2011-03-10 | 2011-03-10 | Swing-cylinder hydraulic motor |
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| Publication Number | Publication Date |
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| CN102174924A CN102174924A (en) | 2011-09-07 |
| CN102174924B true CN102174924B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110056441 Active CN102174924B (en) | 2011-03-10 | 2011-03-10 | Swing-cylinder hydraulic motor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050788A (en) * | 2016-08-05 | 2016-10-26 | 芜湖中意液压科技股份有限责任公司 | Swing-cylinder-type motor with wear-resistant planar flow-distribution component |
| CN109026894A (en) * | 2018-09-05 | 2018-12-18 | 芜湖中意液压科技股份有限责任公司 | A kind of tilt cylinder motor of resistance to flat surface grinding flow component |
| CN110410268A (en) * | 2019-07-21 | 2019-11-05 | 杭州电子科技大学 | A kind of rotating flow distribution motor |
| CN114320730B (en) * | 2021-12-23 | 2023-11-24 | 宁波丹顿液压传动有限公司 | Oil distribution system of double-row ten-cylinder radial plunger motor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2281509A1 (en) * | 1974-08-08 | 1976-03-05 | Ferodo Sa | HYDRAULIC ROTATING MACHINE |
| CN1101700A (en) * | 1993-10-13 | 1995-04-19 | 杨永宁 | High pressure radial plunger oil pump |
| CN2299182Y (en) * | 1997-03-10 | 1998-12-02 | 胡世璇 | Swinging-cylinder hydraulic motor |
| CN2299181Y (en) * | 1997-03-10 | 1998-12-02 | 胡世璇 | Crankshaft link hydraulic motor |
| CN2634167Y (en) * | 2003-06-17 | 2004-08-18 | 周伟 | Radial swing cylinder piston type hydraulic motor |
| CN101078410A (en) * | 2006-05-26 | 2007-11-28 | 周伟 | Radial plunger type hydraulic motor |
| CN200968337Y (en) * | 2006-11-17 | 2007-10-31 | 宁波欧易液压有限公司 | Plunger sleeve used for single-action hydraulic motor |
| CN201560890U (en) * | 2009-11-05 | 2010-08-25 | 昆山金发液压机械有限公司 | Hydraulic motor without link levers of planar oil distributing crankshaft |
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2011
- 2011-03-10 CN CN 201110056441 patent/CN102174924B/en active Active
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| CN102174924A (en) | 2011-09-07 |
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