CN85200445U - Rotary pump with rollers - Google Patents
Rotary pump with rollers Download PDFInfo
- Publication number
- CN85200445U CN85200445U CN 85200445 CN85200445U CN85200445U CN 85200445 U CN85200445 U CN 85200445U CN 85200445 CN85200445 CN 85200445 CN 85200445 U CN85200445 U CN 85200445U CN 85200445 U CN85200445 U CN 85200445U
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- CN
- China
- Prior art keywords
- pump
- axle
- rollers
- pump housing
- roller
- 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.)
- Expired - Lifetime
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- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a roller pump which is a hydraulic element. The utility model is composed of double rows of rollers, a pump body and an eccentric shaft, wherein, the pump body has a cylindrical hollow cavity. The eccentric shaft is positioned in the middle of the hollow cavity. The double rows of cylindrical rollers are positioned between the shaft and the pump body. The volumes of two rollers on the same row relative to the different positions of an eccentric direction are different because of the eccentricity of the shaft. The functions of oil absorption and oil drainage can be achieved by the matching of corresponding port plate with the volume difference.
Description
The utility model belongs to pump and Motor in the hydraulic element.
At present actual uses still by September nineteen eighty-two Beijing front page " mechanical engineering manual " the 6th volume the 34th piece of hydraulic transmission the 2nd chapter oil hydraulic pump of Machine Design (three) and oil hydraulic motor in partly introduce and retrieve oil hydraulic pump, the oil hydraulic motor found and all be gear, blade, screw rod, plunger, steel ball type; Its complex structure, volume is little, weight is big, part processing precision require high, cost is also high.
The purpose of this utility model is in order to improve the technical performance of oil hydraulic pump and oil hydraulic motor, to make its low energy consumption, low noise, small volume; And in order to optimize manufacturability, make simple in structure, part processing is easy, reduce cost and designed roller pump.
Main points of the present utility model are shown in accompanying drawing one, and the pump housing (1) has a cylindrical cavity, and the centre is the axle (2) that a relative rotation axi line has offset (e), along the circumferential direction arrange two row's rollers (3) between the pump housing (1) and axle (2).Because the wobbler action of axle (2), the distance between two the adjacent rollers of same row on the eccentric direction diverse location is different relatively.Thereby efflux between roller with pump housing inwall and in the volume that contained with axle between row's roller also different.If when axle (2) (A) rotation along clockwise direction, all rollers (3) (B) in the counterclockwise direction roll.Along with the rotation of eccentric shaft, the position of the relative eccentric direction of roller is just in continuous variation.And cause that volume between roller is also in continuous variation.Utilize the variation of this volume, mix corresponding thrust plate, just can reach the function of oil suction oil extraction.According to this working principle, can also adopt down array structure:
1, cylindrical pump housing cavity has off-centre for spin axis, and axle is cylindrical not eccentric for spin axis, also can produce the function of oil suction, oil extraction.
But 2, the axle with pump housing cavity between relative offset be designed to timing, just become variable displacement pump.
3, pump housing cavity is made bidirectional cam shape or multidirectional cam-shaped and axle for cylindrical, perhaps axle is made bidirectional cam or multidirectional cam-shaped and pump housing cavity is the garden cylindricality, just become double-acting pump or multiaction pump.
Said structure also is applicable to oil hydraulic motor.
The advantage of roller pump is: simple in structure, the surface of its major part mostly is cylindrical; Part processing precision is less demanding.Full accuracy is an International tolerance standard (ISO) six grades (IT6) and the part processing full accuracy of existing oil hydraulic pump and motor is International tolerance standard (ISO) Pyatyi (IT5) or higher.So, roller pump easy to process, simple, roller pump adopts roller construction, but the rolling friction energy consumption is little, noise is low, automatic backlash compensation after the wearing and tearing; Accumulation gap between roller will concentrate on the zone of high pressure, should not influence sealing effect.Roller pump not only cost is low, and compact structure, volume are little, can be applicable to the occasion that other kind pumps or motor can not be suitable for.
Description of drawings:
Accompanying drawing one is the fundamental diagram with roller pump of eccentric shaft structure:
1---the pump housing; 2---axle; 3---roller; E---offset;
A---the sense of rotation of axle; The direction that B---roller rolls
Upside is fuel-displaced district among the figure, and downside is the oil-feed district.As oil hydraulic pump, fuel-displaced district is the zone of high pressure, and the oil-feed district is a low pressure area.As oil hydraulic motor, the oil-feed district is the zone of high pressure, and fuel-displaced district is a low pressure area.
The eccentric direction of figure axis to the right.
Accompanying drawing two is the structure principle charts with roller pump of eccentric shaft:
1---the pump housing; 2---axle; 3---roller; 4---the flow side plate; 5---thrust plate; 6---seal ring; C---oil inlet passage; D---oil discharge passage
One of roller pump implementation methods is shown in accompanying drawing two, for having the roller pump of eccentric shaft structure.Because zone of high pressure or low pressure area are along with there being eccentric axle (2) rotation surface to rotate, so flow side plate (4) and thrust plate (5) adopt the form of rotating synchronously with axle (2) relative fixed, with axle (2).Flow side plate (4) is gone up and is respectively had slotted eye in zone of high pressure and low pressure area, and aims at zone of high pressure and low pressure area in the pump respectively, communicates with oil discharge passage (D) and oil inlet passage (C) respectively by thrust plate again.Between flow side plate (4) and thrust plate (5), there is a seal ring (6) to locate the zone of high pressure and low pressure area separates.When part axial in the roller pump wore and tore, flow side plate (4) is axial clearance compensation voluntarily.At the design seal ring when (6), the zone of high pressure area that is parallel to thrust plate in zone of high pressure area that seal ring (6) sealed and the pump is equated.When pressure oil, the zone of high pressure that seal ring (6) is sealed produces a pressure as back pressure, thereby makes the axial pressure balance of flow side plate (4) both sides, is produced internal leakage with regard to unlikely from roller (3) by pressure.The axial pressure that affacts on the thrust plate (5) finally affacts on the pump housing (1).
The big I of the size of pump housing cavity size, axle, the size of roller and offset is determined according to following requirement:
1. guarantee row's two row's rollers between the pump housing and axle, make the pump housing with efflux between the roller, between two row's rollers, interior row's roller with spool between difference tangent, can not interfere with each other.
2. the folded angle of the tangent line at per two point of contacts should be greater than friction self-locking pressure angle on the roller.
3. the contact stress at each point of contact is less than the allowable stress of material.
4. the size of revolution discharge capacity.
Claims (4)
1, a kind of oil hydraulic pump of being made up of the pump housing, axle, thrust plate is characterized in that between the pump housing and the axle along circumferential row two row rollers, and pump housing cavity or axle relatively a roulette off-centre is arranged.
2, according to the described pump of claim 1, it is characterized in that adding adjusting device of eccentricity, just become variable displacement pump.
3, a kind of oil hydraulic pump of forming by the pump housing, axle, thrust plate, it is characterized in that between the pump housing and the axle along circumferential row two row's rollers, and pump housing cavity or axle surface are bidirectional cam shape or multidirectional cam-shaped, dispose corresponding columniform axle or pump housing cavity, just become double pump or multiaction pump.
4, according to the described pump of claim 1.2.3, its structure also is applied to oil hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200445 CN85200445U (en) | 1985-04-01 | 1985-04-01 | Rotary pump with rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200445 CN85200445U (en) | 1985-04-01 | 1985-04-01 | Rotary pump with rollers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85200445U true CN85200445U (en) | 1985-09-10 |
Family
ID=4796779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85200445 Expired - Lifetime CN85200445U (en) | 1985-04-01 | 1985-04-01 | Rotary pump with rollers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85200445U (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 |
-
1985
- 1985-04-01 CN CN 85200445 patent/CN85200445U/en not_active Expired - Lifetime
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 |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |