CN206668544U - A kind of gear pump with variable capacity that can realize stepless speed regulation - Google Patents
A kind of gear pump with variable capacity that can realize stepless speed regulation Download PDFInfo
- Publication number
- CN206668544U CN206668544U CN201720407882.2U CN201720407882U CN206668544U CN 206668544 U CN206668544 U CN 206668544U CN 201720407882 U CN201720407882 U CN 201720407882U CN 206668544 U CN206668544 U CN 206668544U
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- China
- Prior art keywords
- gear
- gear pump
- driven gear
- variable capacity
- driven
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Abstract
It the utility model is related to a kind of gear pump with variable capacity that can realize stepless speed regulation, it is characterized in that it is provided with driving gear and meshed driven gear in gear pump case, there are two sliding blocks for being coaxial therewith connection two end faces of driven gear, one is cylindrical slide, one is semilune sliding block, the piston rod that then there are two small-scale liquid cylinder pressures two end faces of driven shaft is in contact with it, it is emphasized that the two hydraulic cylinders belong to synchronous hydraulic cylinder, the axial length that driving gear engages with driven gear can be adjusted by the promotion of hydraulic cylinder piston rod.The advantages of gear pump with variable capacity is not only can to change the flow for conveying liquid according to being actually needed to meet different duty requirements, and stepless speed regulation can be realized during this regulation.Gear pump with variable capacity is the transformation and innovation to original gear pump, can improve operating efficiency, has very wide application prospect.
Description
Technical field
A kind of gear type variable rate pump is the utility model is related to, more particularly to a kind of gear type as engine oil pump becomes
Measure pump.
Background technology
Gear pump has small volume, simple in construction, and reliable operation is in light weight, and suction capacity is strong, and cost is cheap, oil resistant liquid
The strong remarkable advantage of pollution capacity, is commonly used for power set in hydraulic system.At present, both at home and abroad on gear pump research
Through obtaining high achievement, such as the optimization in gear parameter and pump body structure, backlash compensation, pocketed oil impact and off-load, noise
Many aspects such as control have significant progress, and have the solution method of a set of comparative maturity, are asked only in the variable of gear pump
Stagnated in topic, do not find a substantial solution all the time, control gear pump output flow can only utilize shunting
Mode solve, so not only result in the loss without reason of power, and wasting for the energy can be caused, these are lacked
Point strongly limit the application of gear pump.
The content of the invention
The purpose of this utility model is to provide a kind of improved variable gear pump, and it can overcome prior art middle gear
Pump can not realize variable, and some can realize the gear pump of variable but stepless speed regulation can not be realized in multivariable process
Problem.
The technical solution of the utility model is：
A kind of gear pump with variable capacity that can realize stepless speed regulation, it is mainly formed including gear pump body, regulation driving dress
Put and sliding block, it is characterised in that：The both ends of driven gear are respectively provided with a sliding block and are coaxial therewith connecting in described gear pump body
Connect, sliding block is in close contact with driven gear end face, and with driven gear shaft to movement, driven gear both ends are provided with regulation driving dress
Put, it is in contact with the both ends of the surface of driven shaft.
Further, driving shaft and driving gear and driven shaft and driven gear were all in described gear pump body
It is full of and coordinates and by key connection, driving gear and driven gear intermeshing.
Further, described regulation drive device is two synchronous hydraulic cylinders, and its specification is identical, piston rod range
The ultimate range axially slided equal to driven gear.
Further, described driven shaft is multi-diameter shaft, is divided into three sections, and left end is most thin, successively to the right be incremented by, jackshaft with
Driven gear is interference fitted, and is coordinated with two space of slider, and is provided with keyway, and right-hand member axle blocks cylindrical slider.
Further, its diameter of described two sliding blocks is equal to driven gear external diameter, and one is cylindrical slider, another
For semilune sliding block, in round pie, its side is provided with a circular arc cutaway, overall similar crescent shape, the circular arc cutaway and master
The external diameter of moving gear is engaged, and a keyway is provided with the aperture of the semilune sliding block.
The beneficial effects of the utility model are：
1. being compared with common gear pump, the utility model gear pump can realize this limitation common gear pump application of variable
The problem of scope, and use as the lubricating oil pump of vehicle and can reach the purposes of energy-saving and emission-reduction；
2. the utility model gear pump with variable capacity is compared with general gear pump with variable capacity, it is maximum the characteristics of can be achieved on it is stepless
Speed governing；
3. the discharge capacity of the utility model gear pump with variable capacity relation proportional to the axial displacement of driven gear, i.e., linear to close
System, this feature are advantageous to the accurate control to pumpage.
Brief description of the drawings
Accompanying drawing 1, the structural representation of the utility model gear pump with variable capacity.
Accompanying drawing 2, the pump body structure schematic diagram of the utility model gear pump with variable capacity.
Accompanying drawing 3, the semilune slide block structure schematic diagram of the utility model gear pump with variable capacity.
Accompanying drawing 4, the driving and driven gear engagement structure schematic diagram of the utility model gear pump with variable capacity.
Accompanying drawing 5, the hydraulic cylinder structure schematic diagram of the utility model gear pump with variable capacity.
Accompanying drawing 6, another synchronous hydraulic cylinder structural representation of the utility model gear pump with variable capacity.
In figure：1st, hydraulic cylinder, 2, driven shaft, 3, cylindrical slider, 4, driving shaft, 5, the pump housing, 6, semilune sliding block, 7,
Driven gear, 8, driving gear, 9,15, piston rod, 10, piston, 11,12,13,14, hydraulic fluid port.
Embodiment
Concrete structure of the present utility model and embodiment are further illustrated below in conjunction with accompanying drawing.
With reference to Fig. 1 to 3, the structure composition of the utility model gear pump with variable capacity includes hydraulic cylinder（1-1、1-2）, driven shaft
（2）, cylindrical slider（3）, driving shaft（4）, the pump housing（5）, semilune sliding block（6）, driven gear（7）And driving gear（8）.Institute
The driving gear stated（8）With driving shaft（4）Between belong to interference fit and by key connection, driven gear（7）With driven shaft（2）It
Between also belong to interference fit and by key connection, driving gear（8）And driven gear（7）Intermeshing, cylindrical slider（3）With
Semilune sliding block（6）It is close to driven gear（7）Both ends of the surface, and and driven gear（7）It is coaxially connected, wherein semilune sliding block
（6）And driven shaft（2）Belong to gap cooperation, and by key connection, cylindrical slider（3）With driven shaft（2）Gap is still fallen within to match somebody with somebody
Close, but the driven shaft for section of keeping right（2）The diameter of axle be more than cylindrical slider（3）Aperture, thereby may be ensured that cylindrical slider
（3）, semilune sliding block（6）And driven gear（7）Moment is all in close contact, two synchronous hydraulic cylinders（1-1、1-2）Piston rod
Respectively with driven shaft（2）Both ends of the surface contact, and ensure concentric.
Described synchronous hydraulic cylinder（1-1、1-2）, it is characterised in that hydraulic cylinder（1）The stroke of piston rod is equal to driven tooth
Take turns ultimate range in axial sliding.
Described semilune sliding block（6）, semilune sliding block（6）It is characterised by, its diameter is equal to the external diameter of driven gear, main
Body is in round pie, and the side of main body is provided with a circular arc cutaway, overall similar crescent shape, and the circular arc cutaway is engaged and active
The external diameter of gear, and a keyway is provided with the aperture of the semilune sliding block.
The described pump housing（5）, it is characterised in that the pump housing（5）By driving gear（8）, driven gear（7）Formed with pump case,
Wherein driving gear（8）And driven gear（7）Intermeshing, pump case are provided with oil inlet（5-2）And oil-out（5-3）.
The course of work of the present utility model is as follows：
The utility model gear pump with variable capacity can realize multivariable process, and the oil mass needed during startup is big, driving gear（8）With
Driven gear（7）In full engagement, with the increase of engine speed, oil drain quantity is more and more, and it is unnecessary now just to have
Flow output, so when hydraulic cylinder（1-2）On hydraulic fluid port（12）Oil-feed, hydraulic fluid port（11）It is fuel-displaced, hydraulic cylinder（1-1）On hydraulic fluid port
（13）Oil-feed, hydraulic fluid port（14）It is fuel-displaced, so that piston rod（9）, piston rod（15）Synchronously move right, so as to promote driven shaft
（2）With driven gear（7）, semilune sliding block（6）, cylindrical slider（3）Move right together, make driving gear（8）With from
Moving gear（7）Between axial length of action shorten, oil drain quantity reduces, and semilune sliding block（6）Can farthest it reduce
By driving gear（8）And driven gear（7）Between length of action shorten caused by leakage problem, driven gear（7）Slide to the right
In dynamic process, driven gear can be controlled by controlling the break-make of hydraulic cylinder oil circuit at any time（7）The distance slided to the right, from
And realize stepless speed regulation；Conversely work as driving gear（8）And driven gear（7）Under non-full engagement and it is unsatisfactory for gear
During the oil mass demand of pump oil discharge outlet, hydraulic cylinder（1-1）Hydraulic fluid port（14）Oil-feed, hydraulic fluid port（13）It is fuel-displaced, hydraulic cylinder（1-2）Hydraulic fluid port
（11）Oil-feed, hydraulic fluid port（12）It is fuel-displaced, so that piston rod（9）, piston rod（15）Synchronously it is moved to the left, so as to promote driven shaft
（2）With driven gear（7）, semilune sliding block（6）, cylindrical slider（3）It is moved to the left together, makes driving gear（8）With from
Moving gear（7）Between axial length of action it is elongated, oil drain quantity increase, similarly can be by controlling hydraulic cylinder at any time（1-1、1-
2）The break-make of oil circuit controls driven gear（7）The distance slided to the left, so as to realize stepless speed regulation.
General principle and principal character of the present utility model has been shown and described above.The utility model is not by above-mentioned implementation
The principle of the simply invention of the limitation of example, above-described embodiment and specification description, spirit of the present utility model and model are not being departed from
On the premise of enclosing, the utility model also has various changes and modifications, and these inventions and improvement belong to this claimed reality
With in new scope.
Claims (5)
1. a kind of gear pump with variable capacity that can realize stepless speed regulation, it is mainly formed including gear pump body, regulation drive device
And sliding block, it is characterised in that：The both ends of driven gear are respectively provided with a sliding block and are coaxial therewith connecting in described gear pump body,
Sliding block is in close contact with driven gear end face, and with driven gear shaft to movement, driven gear both ends are provided with regulation drive device,
It is in contact with the both ends of the surface of driven shaft.
A kind of 2. gear pump with variable capacity that can realize stepless speed regulation according to claim 1, it is characterised in that：Gear pump pump
Internal driving shaft and driving gear and driven shaft and driven gear are all interference fits and by key connection, driving gear and driven
Gear is intermeshed.
A kind of 3. gear pump with variable capacity that can realize stepless speed regulation according to claim 1, it is characterised in that：Described tune
Section drive device is two synchronous hydraulic cylinders, and its specification is identical, and piston rod range is axially slided most equal to driven gear
Big distance.
A kind of 4. gear pump with variable capacity that can realize stepless speed regulation according to claim 1, it is characterised in that：Described is driven
Axle is multi-diameter shaft, is divided into three sections, and left end is most thin, is incremented by the right successively, and jackshaft and driven gear are interference fitted, and with two sliding blocks
Gap coordinates, and is provided with keyway, and right-hand member axle blocks cylindrical slider.
A kind of 5. gear pump with variable capacity that can realize stepless speed regulation according to claim 1, it is characterised in that：Described two
Its diameter of individual sliding block is equal to driven gear external diameter, and one is cylindrical slider, and another is semilune sliding block, in round pie, its
Side is provided with a circular arc cutaway, overall similar crescent shape, and the circular arc cutaway is engaged the external diameter with driving gear, and should be partly
A keyway is provided with the aperture of month shape sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720407882.2U CN206668544U (en) | 2017-04-18 | 2017-04-18 | A kind of gear pump with variable capacity that can realize stepless speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720407882.2U CN206668544U (en) | 2017-04-18 | 2017-04-18 | A kind of gear pump with variable capacity that can realize stepless speed regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668544U true CN206668544U (en) | 2017-11-24 |
Family
ID=60374757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720407882.2U Expired - Fee Related CN206668544U (en) | 2017-04-18 | 2017-04-18 | A kind of gear pump with variable capacity that can realize stepless speed regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989013A (en) * | 2017-05-03 | 2017-07-28 | 哈尔滨理工大学 | It is a kind of to realize the gear pump with variable capacity of stepless speed regulation |
-
2017
- 2017-04-18 CN CN201720407882.2U patent/CN206668544U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989013A (en) * | 2017-05-03 | 2017-07-28 | 哈尔滨理工大学 | It is a kind of to realize the gear pump with variable capacity of stepless speed regulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20180418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |