CN104454755A - Spiral cycloidal oil cylinder - Google Patents
Spiral cycloidal oil cylinder Download PDFInfo
- Publication number
- CN104454755A CN104454755A CN201310418509.3A CN201310418509A CN104454755A CN 104454755 A CN104454755 A CN 104454755A CN 201310418509 A CN201310418509 A CN 201310418509A CN 104454755 A CN104454755 A CN 104454755A
- Authority
- CN
- China
- Prior art keywords
- spiral
- oil cylinder
- piston body
- running shaft
- cylinder barrel
- 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.)
- Pending
Links
- 239000000428 dust Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 25
- 239000010720 hydraulic oil Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a spiral cycloidal oil cylinder. The oil cylinder is structurally characterized in that pins are meshed with spiral grooves in the surface of a rotating shaft; and under pushing of hydraulic force to a piston assembly, spiral grooves in the surface of a piston body rotate under the effect of large guide pins in a cylinder barrel, and therefore small guide pins welded to the interior of the piston body pull reversed spiral grooves in the external circle of the rotating shaft, and finally the aim of converting the hydraulic force into output torque is achieved. Meanwhile, a bearing ring and needle bearings which are structurally arranged on the spiral cycloidal oil cylinder enable the oil cylinder to bear large axial and radial loads. In terms of performance, the spiral cycloidal oil cylinder has the beneficial effects of being small in size, light in weight, large in torque, precise in rotating angle and the like. In terms of the structure, the machining difficulty of the spiral cycloidal oil cylinder is greatly reduced, and the assembling operability of the spiral cycloidal oil cylinder is greatly improved, so that the production cost is reduced, and the yield of a product is improved.
Description
Technical field
The present invention relates to a kind of spiral cycloid oil cylinder, especially volume be little, lightweight, moment of torsion is large, rotation angle accurate spiral cycloid oil cylinder.It has cylinder barrel assembly, piston assembly, large end cap assembly, running shaft, small end cover assembly, needle bearing, the parts such as supporting ring.
Background technique
At present, cycloid oil cylinder mainly comprises pinion and-rack, blade type, spiral three kinds of structures.Pinion and-rack cycloid oil cylinder can transmitting large torque, but volume is larger; Blade type cycloid cylinder action is sensitive, and rotate evenly, but machine rotating speed is too high, tool characteristic is soft; Spiral cycloid cylinder structure is compact, and start is accurate, stable, has important promotional value.
Traditional spiral cycloid oil cylinder schematic diagram.Traditional spiral cycloid oil cylinder generally has several parts such as cylinder barrel, guide way, piston assembly, running shaft, end cap.Guide way is relative with cylinder barrel fixing, and inner circle position is processed with spiral grooves, is meshed with the spiral grooves of piston body surface Machining.Piston body cylindrical and endoporus are all processed with spiral grooves, and rotation direction is contrary.The spiral grooves that piston body inner face has is meshed in the spiral grooves of rotating shaft surface with processing.When hydraulic oil enters from hydraulic fluid port 1, hydraulic oil promotes piston-advance, and due to the engagement of spiral grooves, piston assembly can rotate, and this spinning movement and forward motion can promote the counterrotating of the contrary running shaft of rotation direction.Thus reach the effect of output torque.
But because traditional guide way inner face of spiral cycloid oil cylinder and the inner face of piston body all have employed spiral grooves, difficulty of processing is very large.In addition, this spiral cycloid oil cylinder structurally more complicated, final assembly required precision is very high, easily occurs bad product.Finally cause product price high, be unfavorable for marketing.
In view of some defects of existing spiral cycloid oil cylinder, the invention provides a kind of spiral cycloid oil cylinder of structurally making Important Adjustment, both met performance requirement, and reached simplified structure again, reduce the object of difficulty of processing.
Summary of the invention
The spiral cycloid oil cylinder that the present invention relates to comprises cylinder barrel assembly (1), piston assembly (2), large end cap assembly (3), running shaft (4), small end cover assembly (5), needle bearing (6), supporting ring (7).Described cylinder barrel assembly (1) comprises cylinder barrel (11) and is welded on large guide finger (12) two-part on described cylinder barrel; Described piston assembly comprises piston body (21), be welded on the little guide finger (22) on described piston body, be combined in supporting ring (23) and the Glais ring (24) of described piston body inside diameter, be combined in the Glais ring (25) of piston body outer diameter part; Described large end cap assembly comprises large end cap (31) and is combined in the dust ring (32) in described large end cap inside diameter groove; Described running shaft is formed with supporting annular groove (41), sealed groove (42), spiral grooves (43), tapped hole (44) is installed; Described small end cover assembly comprises small end cover (52), and is combined in O type circle (51) above small end cover, supporting ring (53), this special envelope (54), dust ring (55).
The object of this invention is to provide a kind of spiral cycloid oil cylinder, realized by following technological scheme.A kind of spiral cycloid oil cylinder, this spiral cycloid oil cylinder comprises cylinder barrel assembly (1), piston assembly (2), large end cap assembly (3), running shaft (4), small end cover assembly (5), needle bearing (6), supporting ring (7), described cylinder barrel assembly (1) comprises cylinder barrel (11) and is welded on large guide finger (12) two-part on described cylinder barrel; Described piston assembly comprises piston body (21), be welded on the little guide finger (22) on described piston body, be combined in supporting ring (23) and the Glais ring (24) of described piston body inside diameter, be combined in the Glais ring (25) of piston body outer diameter part; Described large end cap assembly comprises large end cap (31) and is combined in the dust ring (32) in described large end cap inside diameter groove; Described running shaft is formed with supporting annular groove (41), sealed groove (42), spiral grooves (43); Described small end cover assembly comprises small end cover (52), and is combined in O type circle (51) above small end cover, supporting ring (53), this special envelope (54), dust ring (55).
Cylindrical on described cylinder barrel (11) is formed with 4 pin-and-holes (112), and circumference is uniformly distributed on cylinder barrel, described large guide finger (12) is welded in pin-and-hole, and large guide finger extend into cylinder barrel inside.
The cylindrical of described piston body (21) is formed with 4 pin-and-holes (212), circumference is uniformly distributed on the piston body, and described little guide finger (22) is welded in pin-and-hole, and little guide finger extend into piston body inside diameter.
Piston body (21) excircle has and is formed with 4 line spiral grooves (211), and spiral grooves on the piston body circumference is evenly distributed, and spiral grooves is opened on an end face of piston body.
Running shaft is formed with supporting ring groove (41), sealed groove (42), and is uniformly distributed in 4 line spiral grooves (43) of rotating shaft surface.
4 the large guide fingers (12) be positioned on cylinder assembly (1) are meshed respectively with 4 spiral grooves (211) above piston body (21).
4 the little guide fingers (22) be positioned at above piston assembly (2) are meshed respectively with 4 spiral grooves (43) above running shaft (4).
The spiral grooves (211) being positioned at piston body (21) surface is contrary with spiral grooves (43) rotation direction being positioned at running shaft (4) surface.
Protruding part (41) both sides of running shaft (4) are respectively fitted with two needle bearings (6).
The protruding part (41) of running shaft (4) is equipped with supporting ring (7).
The end face of described cylinder barrel (11) is formed installs tapped hole (114), and installation spiral hole is evenly distributed along the axis circumference of cylinder barrel.
The end face of described running shaft (4) is formed installs tapped hole (44), and installation spiral hole is evenly distributed along the axis circumference of running shaft.
Spiral cycloid oil cylinder provided by the present invention reaches the advantages such as volume is little, lightweight, moment of torsion is large, rotation angle is accurate in performance.Structurally greatly reduce difficulty of processing and the assembling operability of spiral cycloid oil cylinder, thus reduce cost of production, improve the yield rate of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of spiral cycloid oil cylinder provided by the present invention;
Fig. 2 is the enlarged view of the spiral cycloid oil cylinder part A shown in Fig. 1;
Fig. 3 is the structural representation of piston body;
Fig. 4 is the structural representation of running shaft;
Fig. 5 is the side schematic view of running shaft;
Fig. 6 is the structural representation of cylinder barrel;
Fig. 7 is the side schematic view of cylinder barrel;
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Spiral cycloid oil cylinder, this spiral cycloid oil cylinder comprises cylinder barrel assembly (1), piston assembly (2), large end cap assembly (3), running shaft (4), small end cover assembly (5), needle bearing (6), supporting ring (7), described cylinder barrel assembly (1) comprises cylinder barrel (11) and is welded on large guide finger (12) two-part on described cylinder barrel; Described piston assembly comprises piston body (21), be welded on the little guide finger (22) on described piston body, be combined in supporting ring (23) and the Glais ring (24) of described piston body inside diameter, be combined in the Glais ring (25) of piston body outer diameter part; Described large end cap assembly comprises large end cap (31) and is combined in the dust ring (32) in described large end cap inside diameter groove; Described running shaft is formed with supporting annular groove (41), sealed groove (42), spiral grooves (43); Described small end cover assembly comprises small end cover (52), and is combined in O type circle (51) above small end cover, supporting ring (53), this special envelope (54), dust ring (55).
Cylindrical on described cylinder barrel (11) is formed with 4 pin-and-holes (112), and circumference is uniformly distributed on cylinder barrel, described large guide finger (12) is welded in pin-and-hole, and large guide finger extend into cylinder barrel inside.
The cylindrical of described piston body (21) is formed with 4 pin-and-holes (212), circumference is uniformly distributed on the piston body, and described little guide finger (22) is welded in pin-and-hole, and little guide finger extend into piston body inside diameter.
Piston body (21) excircle has and is formed with 4 line spiral grooves (211), and spiral grooves on the piston body circumference is evenly distributed, and spiral grooves is opened on an end face of piston body.
Running shaft is formed with supporting ring groove (41), sealed groove (42), and is uniformly distributed in 4 line spiral grooves (43) of rotating shaft surface.
4 the large guide fingers (12) be positioned on cylinder assembly (1) are meshed respectively with 4 spiral grooves (211) above piston body (21).
4 the little guide fingers (22) be positioned at above piston assembly (2) are meshed respectively with 4 spiral grooves (43) above running shaft (4).
The spiral grooves (211) being positioned at piston body (21) surface is contrary with spiral grooves (43) rotation direction being positioned at running shaft (4) surface.
Protruding part (41) both sides of running shaft (4) are respectively fitted with two needle bearings (6).
The protruding part (41) of running shaft (4) is equipped with supporting ring (7).
The end face of described cylinder barrel (11) is formed installs tapped hole (114), and installation spiral hole is evenly distributed along the axis circumference of cylinder barrel.
The end face of described running shaft (4) is formed installs tapped hole (44), and installation spiral hole is evenly distributed along the axis circumference of running shaft.
Spiral cycloid oil cylinder as shown in Fig. 1 and Fig. 7 and the structural representation of cylinder barrel.When hydraulic oil enters by piston body from hydraulic fluid port (113), cylinder barrel, time in the chamber that small end cover and running shaft are formed, piston body is to out movement under the pressure of hydraulic oil promotes, and piston body is subject to stirring and rotating of large guide finger (12) simultaneously; Meanwhile, the little guide finger (22) arranged in piston assembly stirs running shaft spiral grooves circumferentially, revolute axes configuration figure as shown in Figure 5.Because the spiral grooves on piston body is contrary with the spiral grooves rotation direction on running shaft, running shaft is the compound of spiral grooves swing angle on spiral grooves and running shaft on piston body relative to the angle that cylinder barrel finally rotates.Finally reach the object transformed to rotation torque by hydraulic coupling.
Same, when hydraulic oil to enter from hydraulic fluid port (111) in chamber be made up of running shaft, piston assembly and cylinder barrel assembly, piston body under the pressure promotion of hydraulic oil to out movement.The torque direction of the running shaft of final output is contrary with aforesaid direction.
In the application of spiral cycloid oil cylinder reality, running shaft radial direction and axial load are very important one side.The spiral cycloid oil cylinder that this patent of invention provides for this reason is provided with supporting ring (7) and needle bearing (6).
Supporting ring is arranged at the supporting annular groove being positioned at running shaft, bears radial load; Two needle bearings lay respectively at the both sides of running shaft projection, can bear axial load.The reliability of spiral cycloid oil cylinder can be improved like this.
Consider that piston assembly is divided into two-part the chamber that cylinder barrel assembly, running shaft and small end cover surround.Two-part sealability will keep high-durability.As shown in Figure 4, the sealed groove (213) that on piston body, excircle part is arranged and sealed groove (215) are assembled with export-oriented Ge Laiquan respectively and interiorly enclose to lattice.In supporting annular groove (214), the supporting ring of assembling plays the supporting role to piston.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.It should be noted that in addition, each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
Claims (12)
1. a spiral cycloid oil cylinder, this spiral cycloid oil cylinder comprises cylinder barrel assembly (1), piston assembly (2), large end cap assembly (3), running shaft (4), small end cover assembly (5), needle bearing (6), supporting ring (7), described cylinder barrel assembly (1) comprises cylinder barrel (11) and is welded on large guide finger (12) two-part on described cylinder barrel; Described piston assembly comprises piston body (21), be welded on the little guide finger (22) on described piston body, be combined in supporting ring (23) and the Glais ring (24) of described piston body inside diameter, be combined in the Glais ring (25) of piston body outer diameter part; Described large end cap assembly comprises large end cap (31) and is combined in the dust ring (32) in described large end cap inside diameter groove; Described running shaft is formed with supporting annular groove (41), sealed groove (42), spiral grooves (43); Described small end cover assembly comprises small end cover (52), and is combined in O type circle (51) above small end cover, supporting ring (53), this special envelope (54), dust ring (55).
2. a kind of spiral cycloid oil cylinder according to claim 1, it is characterized in that, cylindrical on described cylinder barrel (11) is formed with 4 pin-and-holes (112), and circumference is uniformly distributed on cylinder barrel, described large guide finger (12) is welded in pin-and-hole, and large guide finger extend into cylinder barrel inside.
3. a kind of spiral cycloid oil cylinder according to claim 2, it is characterized in that, the cylindrical of described piston body (21) is formed with 4 pin-and-holes (212), circumference is uniformly distributed on the piston body, described little guide finger (22) is welded in pin-and-hole, and little guide finger extend into piston body inside diameter.
4. a kind of spiral cycloid oil cylinder according to claim 3, it is characterized in that, piston body (21) excircle has and is formed with 4 line spiral grooves (211), and spiral grooves on the piston body circumference is evenly distributed, and spiral grooves is opened on an end face of piston body.
5. spiral cycloid oil cylinder according to claim 4, is characterized in that, running shaft is formed with supporting ring groove (41), sealed groove (42), and is uniformly distributed in 4 line spiral grooves (43) of rotating shaft surface.
6. spiral cycloid oil cylinder according to claim 5, it is characterized in that, 4 the large guide fingers (12) be positioned on cylinder assembly (1) are meshed respectively with 4 spiral grooves (211) above piston body (21).
7. spiral cycloid oil cylinder according to claim 6, it is characterized in that, 4 the little guide fingers (22) be positioned at above piston assembly (2) are meshed respectively with 4 spiral grooves (43) above running shaft (4).
8. spiral cycloid oil cylinder according to claim 7, is characterized in that, the spiral grooves (211) being positioned at piston body (21) surface is contrary with spiral grooves (43) rotation direction being positioned at running shaft (4) surface.
9. spiral cycloid oil cylinder according to claim 8, is characterized in that, protruding part (41) both sides of running shaft (4) are respectively fitted with two needle bearings (6).
10. spiral cycloid oil cylinder according to claim 9, is characterized in that, the protruding part (41) of running shaft (4) is equipped with supporting ring (7).
11. spiral cycloid oil cylinders according to claim 10, is characterized in that, the end face of described cylinder barrel (11) is formed installs tapped hole (114), and installation spiral hole is evenly distributed along the axis circumference of cylinder barrel.
12. spiral cycloid oil cylinders according to claim 11, is characterized in that, the end face of described running shaft (4) is formed installs tapped hole (44), and installation spiral hole is evenly distributed along the axis circumference of running shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310418509.3A CN104454755A (en) | 2013-09-16 | 2013-09-16 | Spiral cycloidal oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310418509.3A CN104454755A (en) | 2013-09-16 | 2013-09-16 | Spiral cycloidal oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104454755A true CN104454755A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310418509.3A Pending CN104454755A (en) | 2013-09-16 | 2013-09-16 | Spiral cycloidal oil cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN104454755A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246990A (en) * | 2016-08-26 | 2016-12-21 | 伯特利阀门集团有限公司 | Inverse cam formula pneumatic actuator |
| CN107687456A (en) * | 2016-08-04 | 2018-02-13 | 大连精维液压技术有限公司 | A kind of special high pulling torque rotary type joint power device |
| CN112922920A (en) * | 2021-04-02 | 2021-06-08 | 大连理工大学 | Compact type swing hydraulic cylinder and use method thereof |
-
2013
- 2013-09-16 CN CN201310418509.3A patent/CN104454755A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687456A (en) * | 2016-08-04 | 2018-02-13 | 大连精维液压技术有限公司 | A kind of special high pulling torque rotary type joint power device |
| CN106246990A (en) * | 2016-08-26 | 2016-12-21 | 伯特利阀门集团有限公司 | Inverse cam formula pneumatic actuator |
| CN106246990B (en) * | 2016-08-26 | 2018-11-09 | 浙江伯特利科技有限公司 | Inverse cam formula pneumatic actuator |
| CN112922920A (en) * | 2021-04-02 | 2021-06-08 | 大连理工大学 | Compact type swing hydraulic cylinder and use method thereof |
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Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |