CN201836039U - Cylinder structure of variable hydraulic pump - Google Patents
Cylinder structure of variable hydraulic pump Download PDFInfo
- Publication number
- CN201836039U CN201836039U CN2010205757566U CN201020575756U CN201836039U CN 201836039 U CN201836039 U CN 201836039U CN 2010205757566 U CN2010205757566 U CN 2010205757566U CN 201020575756 U CN201020575756 U CN 201020575756U CN 201836039 U CN201836039 U CN 201836039U
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- plunger
- oil outlet
- cavity
- cylinder body
- housing structure
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Abstract
The utility model discloses a cylinder structure of a variable hydraulic pump, which comprises a cylinder body, wherein the center of the cylinder body is provided with an assembly through chamber which is used for installing a driving shaft and plunger chambers which are evenly distributed in equal radian by taking the central axis of the assembly through chamber as the axis; the number of the plunger chambers is even number of at least eight; the rear end face of the cylinder body is provided with waist-shaped oil outlets with equal number of the plunger chambers; the adjacent waist-shaped oil outlets are respectively distributed on two circumferences concentric to the central axis in a staggered way to form a staggered layout structure with inner-ring oil outlets and outer-ring oil outlets; and the plunger chamber is communicated with the waist-shaped oil outlet which corresponds to the plunger chamber to form an integrated single-cylinder double-pump cylinder structure. By integrating the two cylinders of the double pumps into a single cylinder, the cylinder structure has the advantages of high utilization ratio of a cavity, small volume, compact structure and resources saving.
Description
Technical field
The utility model relates to a kind of oil hydraulic pump, especially a kind of plunger variable hydraulic pump, specifically a kind of housing structure of volume adjustable hydraulic pump.
Background technique
At present, the variable hydraulic planger pump, mainly be pressed on live axle to tilt to have on the swash plate at an inclination angle by plunger, rotation along with live axle, plunger is reciprocating in plunger cavity under the pressuring action of swash plate, thereby finishes oil suction and press the process of oil, and by with the equipped oil distribution casing of cylinder body on the waist shaped hole oil-feed and the oil extraction that are shaped on, realize the output of working pressure oil, its swash plate is hinged to be fitted on the ball pivot of cylinder body front end.In the prior art, in order to guarantee the demand of system condition, improve the pressure or the power of working oil, usually adopt single pump of two parallel connections or series connection to realize, but it is big to adopt the mode of this single pump to have a volume, the defective of serious waste of resources, and also increased user cost, so if can there be a kind of volume little, the oil hydraulic pump that efficient is high will be popular to people deeply and like.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned prior art present situation, the housing structure of a kind of volume adjustable hydraulic pump with single cylinder double pump effect is provided, and its compact structure, volume are little, the die cavity utilization rate high and have characteristics such as easy processing, user cost is low.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of housing structure of volume adjustable hydraulic pump, comprise the cylinder body body, wherein: the center of described cylinder body body is shaped on the assembling cavity that is used to install live axle, with with the assembling cavity central axis be the equally distributed plunger cavities of radian such as axle center, the quantity of described plunger cavity is at least eight even number amount; The ear end face of described cylinder body body is shaped on the waist shape oil outlet with quantity such as plunger cavities, and adjacent waist shape oil outlet is straggly respectively to be distributed on the twice contour with the central axis concentric, the layout structure straggly of ring oil outlet and outer shroud oil outlet in being formed with, the waist shape oil outlet that described plunger cavity is corresponding with it is connected, and constitutes the single cylinder double pump housing structure of integrated form.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned plunger cavity is ten, and described interior ring oil outlet and outer shroud oil outlet respectively have five, form the single cylinder double pump housing structure of two five plunger types.
The assembling cavity front end of above-mentioned cylinder body body fixedly is equipped with ball pivot, and the central axis of the axle center of described ball pivot and assembling cavity point-blank.
Above-mentioned cylinder body body and ball pivot are a whole workpiece.
Above-mentioned plunger cavity is fitted with the plunger that the front end hinge is furnished with plunger piston slippery boots, and plunger piston slippery boots and the installation of swash plate compression fit, and described swash plate is movably hinged and is supported on the ball pivot.
Above-mentioned cylinder body body ear end face is fitted with oil distribution casing.
Compared with prior art, the center of its cylinder body body of the utility model is shaped on the assembling cavity that is used to install live axle and is the equally distributed plunger cavities of radian such as axle center with the central axis of assembling cavity, and the quantity of plunger cavity is at least eight even number amount; The ear end face of cylinder body body is shaped on the waist shape oil outlet with quantity such as plunger cavities, and adjacent waist shape oil outlet is straggly respectively to be distributed on the twice contour with the central axis concentric, the layout structure straggly of ring oil outlet and outer shroud oil outlet in being formed with, the waist shape oil outlet that plunger cavity is corresponding with it is connected, and constitutes the single cylinder double pump housing structure of integrated form.The utility model adopts ten uniform plunger cavities to match with the waist shape oil outlet of distribution straggly, form the effect of the single cylinder double pump of five plungers, can improve the utilization rate of die cavity widely, two single cylinders of double pump are integrated in the single cylinder, the housing of a shared pump, bonnet, swash plate, stroking mechanism etc. experiment showed, and can improve the product power density ratio more than 45%, thereby, have that volume is little, compact structure, advantage such as economize on resources.
Description of drawings
Fig. 1 is that the utility model embodiment A-A is to cross-sectional view;
Fig. 2 is the utility model embodiment's a plan view;
Fig. 3 is the rear view of Fig. 2;
Fig. 4 is the assembly structure schematic representation of the utility model cylinder body.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is to Figure 4 shows that structural representation of the present utility model.
Reference character wherein is: cylinder body body 1, assembling cavity 1a, plunger cavity 1b, interior ring oil outlet 21, outer shroud oil outlet 22, ball pivot 3, plunger 4, plunger piston slippery boots 41, swash plate 5, oil distribution casing 6.
Embodiment one, as shown in Figure 1 to Figure 3, the housing structure of a kind of volume adjustable hydraulic pump of the present utility model, comprise cylinder body body 1, wherein: the center of cylinder body body 1 is shaped on the assembling cavity 1a that is used to install live axle, with the central axis with assembling cavity 1a be the equally distributed plunger cavity 1b of radian such as axle center, the quantity of described plunger cavity 1b is at least eight even number amount; The ear end face of described cylinder body body 1 is shaped on the waist shape oil outlet with quantity such as plunger cavity 1b, and adjacent waist shape oil outlet is straggly respectively to be distributed on the twice contour with the central axis concentric, the layout structure straggly of ring oil outlet 21 and outer shroud oil outlet 22 in being formed with, the waist shape oil outlet that described plunger cavity 1b is corresponding with it is connected, and constitutes the single cylinder double pump housing structure of integrated form.The utility model is integrated in two single cylinder in the cylinder body, make housing, bonnet, swash plate, stroking mechanism of its shared pump etc., match by the waist shape oil outlet of distribution straggly and uniform plunger cavity 1b, form the phase difference of turnover oil, constitute the effect of single cylinder double pump, thereby use two single pumps to form the oil hydraulic pump of double pump form in the prior art relatively, has remarkable advantages, it is littler that its volume energy is done, it is equipped to be convenient to combination, can improve the die cavity utilization ratio to greatest extent, economizes on resources, thereby can reduce user cost, improve product market competitiveness.
Among the embodiment, as Fig. 2, shown in Figure 3, plunger cavity 1b is ten, and described interior ring oil outlet 21 and outer shroud oil outlet 22 respectively have five, form the single cylinder double pump housing structure of two five plunger types.Certainly plunger cavity 1b also can be designed to 12,14 or the plunger cavity of more even number amount according to the real work needs, ring oil outlet 21 and outer shroud oil outlet 22 increase that also matches correspondingly with it, the utility model constitutes the single cylinder double pump of five plungers, has compact structure, products perfection is good, the efficient advantages of higher.
As shown in Figure 4, the housing structure of a kind of volume adjustable hydraulic pump of the present utility model, the assembling cavity 1a front end of its cylinder body body 1 fixedly is equipped with ball pivot 3, and the central axis of the axle center of ball pivot 3 and assembling cavity 1a is point-blank.Its plunger cavity 1b is equipped with plunger 4, plunger 4 front end moveable hinges are furnished with plunger piston slippery boots 41, plunger piston slippery boots 41 can be handled augular offset with plunger 4 well by hinged rotation, make the smooth smoothly motion of plunger 4, thereby reduce the friction of plunger 4 and plunger cavity 1b, increase its working life, plunger piston slippery boots 41 compresses in the piston shoes mounting hole that is fitted in swash plate 5, and by swash plate 5 and the inclination angle of live axle and the rotation of live axle, realize that plunger 4 is reciprocating in plunger cavity 1b, thereby finish oil suction, pressure oil and oil extraction action.Among the embodiment, the supported hole that swash plate 5 is shaped on by its center is movably hinged and is supported on the ball pivot 3.Swash plate 5, ball pivot 3 and assembling cavity 1a have same axle center in equipped.
Among the embodiment, cylinder body body 1 ear end face is fitted with oil distribution casing 6, is shaped on the filler opening and the oil outlet that match with interior ring oil outlet 21 and outer shroud oil outlet 22 on the oil distribution casing 6, cooperates by oil distribution casing 6 and realizes single cylinder double pump oil supply and discharge.
Embodiment two, among the embodiment, the center of cylinder body body 1 is shaped on the assembling cavity 1a that is used to install live axle, with the central axis with assembling cavity 1a be the equally distributed plunger cavity 1b of radian such as axle center, the front end of assembling cavity 1a is shaped on the ball pivot 3 that forms with cylinder body body 1 one processing and fabricating, and ball pivot 3 has same axle center with assembling cavity 1a, and ball pivot 3 is movably hinged and is fitted with swash plate 5, swash plate 5 can rely on its inclination angle to change plunger stroke by being installed in the rotation of the live axle among the assembling cavity 1a.The utility model is shaped on ten plunger cavity 1b, and the corresponding waist shape oil outlet of the same quantity that each plunger cavity 1b is shaped on cylinder body body 1 ear end face is connected, its waist shape oil outlet of adjacent of described waist shape oil outlet is straggly respectively to be distributed on the twice contour with the central axis concentric, thereby the layout structure straggly of ring oil outlet 21 and outer shroud oil outlet 22 in being formed with is by five plunger single cylinder double pumps of two shared cylinder bodies of its position phase difference formation.Among the embodiment, plunger cavity 1b is fitted with the plunger 4 that the front end hinge is furnished with plunger piston slippery boots 41, and plunger piston slippery boots 41 and the installation of swash plate 5 compression fit, and plunger 4 is reciprocating by being rotated among the plunger cavity 1b of live axle, realizes oil suction, presses oil and oil extraction action.The utility model ball pivot 3 can reduce installation step, improves equipped precision, realize that the single cylinder double pump makes cylinder body and ball pivot integrator in integrated at assembling cavity 1a front end one processing and fabricating.Among the embodiment, cylinder body body 1 ear end face is fitted with oil distribution casing 6, is shaped on the filler opening and the oil outlet that match with interior ring oil outlet 21 and outer shroud oil outlet 22 on the oil distribution casing 6, cooperates by oil distribution casing 6 and realizes single cylinder double pump oil supply and discharge.Present embodiment adopts the one workpiece except that ball pivot 3 and cylinder body body 1, and other is all identical with embodiment one.
The housing structure of a kind of volume adjustable hydraulic pump of the present utility model, its plunger compresses with live axle to be had on the swash plate at an inclination angle, rotation along with live axle, plunger is reciprocating in plunger cavity under the effect of swash plate, finish oil suction and press oily process, and by oil distribution casing oil-feed and oil extraction, equally distributed ten plunger cavities change stroke by pivot angle, the waist shape oil outlet of distribution straggly, form the single cylinder double pump effect of five plungers, thereby it is big to have eliminated in the prior art volume of pump, the wasting of resources defective, by two cylinder bodies of double pump being integrated in the single cylinder housing of a shared pump, bonnet, swash plate, stroking mechanisms etc. have improved the product power density ratio more than 45%.Therefore the utlity model has efficient height, compact structure, volume little, economize on resources and be convenient to advantage such as processing and assembling.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (6)
1. the housing structure of a volume adjustable hydraulic pump, comprise cylinder body body (1), it is characterized in that: the center of described cylinder body body (1) is shaped on the assembling cavity (1a) that is used to install live axle, with with the assembling cavity (1a) central axis be the equally distributed plunger cavities of radian (1b) such as axle center, the quantity of described plunger cavity (1b) is at least eight even number amount; The ear end face of described cylinder body body (1) is shaped on the waist shape oil outlet with plunger cavity quantity such as (1b), and adjacent waist shape oil outlet is straggly respectively to be distributed on the twice contour with the central axis concentric, the layout structure straggly of ring oil outlet (21) and outer shroud oil outlet (22) in being formed with, the waist shape oil outlet that described plunger cavity (1b) is corresponding with it is connected, and constitutes the single cylinder double pump housing structure of integrated form.
2. the housing structure of a kind of volume adjustable hydraulic pump according to claim 1, it is characterized in that: described plunger cavity (1b) is ten, ring oil outlet (21) and outer shroud oil outlet (22) respectively have five in described, form the single cylinder double pump housing structure of two five plunger types.
3. the housing structure of a kind of volume adjustable hydraulic pump according to claim 2, it is characterized in that: assembling cavity (1a) front end of described cylinder body body (1) fixedly is equipped with ball pivot (3), and the central axis of the axle center of described ball pivot (3) and assembling cavity (1a) point-blank.
4. the housing structure of a kind of volume adjustable hydraulic pump according to claim 3, it is characterized in that: described cylinder body body (1) and ball pivot (3) are a whole workpiece.
5. according to the housing structure of claim 3 or 4 described a kind of volume adjustable hydraulic pumps, it is characterized in that: described plunger cavity (1b) is fitted with the front end hinge and is furnished with the plunger (4) of plunger piston slippery boots (41), and plunger piston slippery boots (41) is installed with swash plate (5) compression fit, and described swash plate (5) is movably hinged and is supported on the ball pivot (3).
6. the housing structure of a kind of volume adjustable hydraulic pump according to claim 5, it is characterized in that: described cylinder body body (1) ear end face is fitted with oil distribution casing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205757566U CN201836039U (en) | 2010-10-21 | 2010-10-21 | Cylinder structure of variable hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205757566U CN201836039U (en) | 2010-10-21 | 2010-10-21 | Cylinder structure of variable hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836039U true CN201836039U (en) | 2011-05-18 |
Family
ID=44006144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205757566U Expired - Fee Related CN201836039U (en) | 2010-10-21 | 2010-10-21 | Cylinder structure of variable hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836039U (en) |
-
2010
- 2010-10-21 CN CN2010205757566U patent/CN201836039U/en not_active Expired - Fee Related
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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: 20110518 Termination date: 20151021 |
|
| EXPY | Termination of patent right or utility model |