CN201982239U - Hydraulic motor with double-level piston - Google Patents
Hydraulic motor with double-level piston Download PDFInfo
- Publication number
- CN201982239U CN201982239U CN2010206277829U CN201020627782U CN201982239U CN 201982239 U CN201982239 U CN 201982239U CN 2010206277829 U CN2010206277829 U CN 2010206277829U CN 201020627782 U CN201020627782 U CN 201020627782U CN 201982239 U CN201982239 U CN 201982239U
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- piston
- end part
- hydraulic motor
- shrinkage pool
- external diameter
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Abstract
The utility model discloses a hydraulic motor with a double-level piston, which comprises a stator, wherein a rotor body is imbedded inside the stator; a first concave hole is machined on the side wall of the rotor body; a piston is arranged in the first concave hole in a penetrating way; rollers are arranged at the end parts of the piston. The hydraulic motor is characterized in that the lower part of the first concave hole is necked into a narrowed part; the piston comprises an upper end part and a lower end part, wherein the external diameter of the lower end part is less than the external diameter of the upper end part, and the lower end part is arranged inside the narrowed part of the first concave hole in a penetrating way. As the hydraulic motor with a double-level piston contains an upper end part and a lower end part, the external diameter of the lower end part is less than the external diameter of the upper end part, and the lower end part of the piston bears the side force and guiding function, the lengthened piston enhances the ability for bearing the side force, increases the motor displacement without changing the motor volume.
Description
Technical field
The utility model relates to a kind of oil hydraulic motor, relates in particular to a kind of oil hydraulic motor that has two-diameter piston.
Background technique
Oil hydraulic motor is meant that traditionally output rotatablely moves, and the hydraulic pressure that oil hydraulic pump is provided can change the energy conversion device of mechanical energy into.Oil hydraulic motor also is called oil motor, is widely used in injection machine, boats and ships, works the machine etc. of raising.
Current, a kind of like this oil hydraulic motor is arranged, it comprises stator, is embedded with rotor body in the described stator, offers first shrinkage pool on the sidewall of described rotor body, is equipped with piston in described first shrinkage pool, the end of described piston is provided with roller.Such oil hydraulic motor increases the discharge capacity mode two kinds: the one, increase piston stroke, adopt this method can increase the volume of oil hydraulic motor, the 2nd, increase piston diameter, because of the hydraulic motor structure restriction, to shorten piston if increase piston diameter, thereby cause piston lateral force ability to bear to weaken, influence the use of oil hydraulic motor.
The model utility content
The purpose of this utility model provides a kind of oil hydraulic motor that has two-diameter piston, and this oil hydraulic motor has bigger discharge capacity under same volume.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of oil hydraulic motor that has two-diameter piston, comprise stator, be embedded with rotor body in the described stator, offer first shrinkage pool on the sidewall of described rotor body, be equipped with piston in described first shrinkage pool, the end of described piston is provided with roller, it is characterized in that the lower end of described first shrinkage pool is narrow to be shortened one into and dwindle portion, described piston comprises upper end portion and underpart, described underpart external diameter is less than the external diameter of upper end portion, and described underpart is located in dwindling in the portion of first shrinkage pool.
In the technique scheme, described piston is provided with 6, and is disposed on the rotor body.
In the technique scheme, the outer side wall of the upper end portion of described piston also is provided with second shrinkage pool along the piston extending circumferentially, is provided with piston ring in this second shrinkage pool.
The utility model compared with prior art has following beneficial effect:
The utility model is arranged to upper end portion and underpart with piston, and described underpart external diameter is less than the external diameter of upper end portion, and piston lower end is born side force and leading role, piston has so just extended, increase the ability that piston bears lateral force, also increased the discharge capacity of motor, and the motor constancy of volume.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 be among Fig. 1 A-A to sectional view.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Referring to Fig. 1～2, a kind of oil hydraulic motor that has two-diameter piston comprises stator 1, be embedded with rotor body 3 in the described stator 1, offer first shrinkage pool 30 on the sidewall of described rotor body 3, be equipped with piston 5 in described first shrinkage pool 30, the end of described piston 5 is provided with roller 7.
The end of described rotor body 3 offers first through hole 34, described first shrinkage pool 30 is connected with first through hole 34, the lower end of described first shrinkage pool 30 is narrow to be shortened one into and dwindles portion 32, described piston 5 comprises upper end portion 50 and underpart 52, described underpart 52 external diameters are less than the external diameter of upper end portion 50, and described underpart 52 is located in the portion that dwindles 32 of first shrinkage pool 30.
During work, hydraulic oil enters first shrinkage pool 30 from first through hole 34, makes piston 5 along the radially outward slippage of rotor body 3, when hydraulic oil is back to first through hole 34 from first shrinkage pool 30, makes the radially inwardly slippage of piston 5 along rotor body 3.Hydraulic oil flows between first through hole 34 and first shrinkage pool 30 back and forth, thereby make piston 5 ceaselessly along the radial slippage of rotor body 3, thereby realize the work (, not launching to discuss) of oil hydraulic motor at this because the working principle of oil hydraulic motor has been the common practise of related domain.
Preferably, described piston 5 is provided with 6, and is disposed on the rotor body 3.Piston 5 is provided with 6, under same volume, has bigger discharge capacity.
The outer side wall of the upper end portion 50 of described piston 5 also is provided with second shrinkage pool 54 along piston 5 extending circumferentiallies, is provided with piston ring 9 in this second shrinkage pool 54.
The utility model is arranged to upper end portion 50 and underpart 52 with piston 5, and described underpart 52 external diameters are less than the external diameter of upper end portion 50, and side force and leading role are born in piston 5 underparts 52, and the piston that so just extended increases the ability that piston 5 bears lateral force.And also can not interfere mutually between each piston 5, so just make the oil hydraulic motor of same volume to have maximum discharge capacity.
Claims (3)
1. oil hydraulic motor that has two-diameter piston, comprise stator (1), be embedded with rotor body (3) in the described stator (1), offer first shrinkage pool (30) on the sidewall of described rotor body (3), be equipped with piston (5) in described first shrinkage pool (30), the end of described piston (5) is provided with roller (7), it is characterized in that, the lower end of described first shrinkage pool (30) is narrow to be shortened one into and dwindles portion (32), described piston (5) comprises upper end portion (50) and underpart (52), described underpart (52) external diameter is less than the external diameter of upper end portion (50), and described underpart (52) are located in the portion that dwindles (32) of first shrinkage pool (30).
2. the oil hydraulic motor that has two-diameter piston as claimed in claim 1 is characterized in that, described piston (5) is provided with 6, and is disposed on the rotor body (3).
3. the oil hydraulic motor that has two-diameter piston as claimed in claim 1, it is characterized in that, the outer side wall of the upper end portion (50) of described piston (5) also is provided with along second shrinkage pool (54) of piston (5) extending circumferentially, is provided with piston ring (9) in this second shrinkage pool (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206277829U CN201982239U (en) | 2010-11-24 | 2010-11-24 | Hydraulic motor with double-level piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206277829U CN201982239U (en) | 2010-11-24 | 2010-11-24 | Hydraulic motor with double-level piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982239U true CN201982239U (en) | 2011-09-21 |
Family
ID=44609701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206277829U Expired - Fee Related CN201982239U (en) | 2010-11-24 | 2010-11-24 | Hydraulic motor with double-level piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033329A (en) * | 2013-03-06 | 2014-09-10 | 宁波高新协力机电液有限公司 | Radial-roller high-speed variable-displacement oil motor |
-
2010
- 2010-11-24 CN CN2010206277829U patent/CN201982239U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033329A (en) * | 2013-03-06 | 2014-09-10 | 宁波高新协力机电液有限公司 | Radial-roller high-speed variable-displacement oil motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20141124 |
|
| EXPY | Termination of patent right or utility model |