CN202300825U - Bent axis type plunger hydraulic motor - Google Patents
Bent axis type plunger hydraulic motor Download PDFInfo
- Publication number
- CN202300825U CN202300825U CN2011203538624U CN201120353862U CN202300825U CN 202300825 U CN202300825 U CN 202300825U CN 2011203538624 U CN2011203538624 U CN 2011203538624U CN 201120353862 U CN201120353862 U CN 201120353862U CN 202300825 U CN202300825 U CN 202300825U
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- plunger
- piston
- hole
- piston rod
- cylinder body
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Abstract
The utility model relates to a bent axis type plunger hydraulic motor, which comprises a cylinder body, wherein a central hole and a plurality of plunger holes are formed in the cylinder body; a central plunger is arranged in the central hole; the front end of the central plunger piston extends out of the cylinder body and is connected with a central position ball head at the rear end of the main shaft; and plungers are arranged in various plunger holes. The bent axis type plunger hydraulic motor is characterized in that each plunger consists of a piston and a piston rod; each piston is positioned in the plunger hole and can axially slip; the outer circumferential surface of each piston is in liquid sealing fit with each plunger hole; the rear end of each piston rod is connected with the front end surface of each piston by adopting a ball head connecting way; and the front end of each piston rod extends out of the cylinder body and is connected with the ball head at the rear end of the main shaft. Pure front-back slip is formed between each piston and each plunger hole and high volumetric efficiency is obtained. In addition, a sealing ring between each piston and each plunger hole is not easy to wear; each piston and each plunger hole can from liquid sealing by only adopting the sealing ring and the requirement for liquid sealing is low, so that the sealing cost is low; the piston rod plays a role of only driving the cylinder body to realize oil distribution; and the bent axis type plunger hydraulic motor is favorable in work reliability and high in transmission power.
Description
Technical field
The utility model relates to a kind of oil hydraulic motor, relates in particular to a kind of inclined plunger hydraulic pump/motor.
Background technique
Traditional inclined plunger hydraulic pump/motor comprises cylinder body; 5～7 plunger holes that have a center hole on the axial side plane of cylinder body and evenly be provided with along center hole are equipped with the center plunger in the center hole of cylinder body, the center plunger base is equipped with preloading spring; The front end of center plunger stretches out cylinder body and is connected with the central position bulb of rear-end of spindle through bulb; Be equipped with in each plunger hole one can axial slip plunger, be provided with two seal rings between the outer circumferential face of plunger and the inwall of plunger hole and form liquid sealing, the front end of plunger stretches out cylinder body and is connected with the ball-and-socket employing spherical hinge structure of rear-end of spindle through bulb; Main shaft then is installed in the housing through the tapered roller bearing supporting; The rear end of housing is connected with bonnet, and oil distribution casing is installed on the bonnet, and bonnet is provided with filler opening and oil outlet.
When the plunger hole of pressured fluid through the logical food tray aperture oil distribution casing injection in housing rear end cylinder body, promote plunger and move to upper dead center by lower dead centre, plunger promotes main axis rotation; After central shaft turned over an angle, plunger leaned on up the plunger hole inwall, owing between the axis of the axis of cylinder body and main shaft a pivot angle is arranged; So plunger promptly drives cylinder body simultaneously with main axis rotation and rotates; To-and-fro motion in plunger hole again realizes joining oil, and the working solution that will pass through is discharged through the oil drain out of bonnet; The final realization can convert hydraulic pressure to mechanical energy, is the purpose of working machine output speed and moment of torsion.
Like a patent No. is a kind of inclined plunger hydraulic pump/motor the Chinese utility model patent " a kind of hydraulic clino-axial piston pump or motor " of ZL200920071047.1 (notification number is CN201433866Y) has disclosed.
Because after main shaft turned over several angle, plunger leaned on up and drives the cylinder body rotation again, cylinder body rotates with respect to main shaft so must have an outer corner difference to exist; The existence at decision plunger contact inclination angle; Also determine plunger motion 0 °～7 ° (about about 7 ° of hard-over differences), the plunger hole of the relative cylinder body of plunger is to contain moving back and forth of swing, and is therefore very high to the seal request between plunger and the plunger hole; Ring wear is big; Adopt two circle seal rings of insulting to seal at present between plunger and the plunger hole, but its volumetric efficiency and working life are all not ideal enough, the development and the application of restriction inclined plunger hydraulic pump/motor.
Summary of the invention
The utility model technical problem to be solved is that the inclined plunger hydraulic pump/motor that a kind of volumetric efficiency is high, cost of production is low, functional reliability good and transmitted power is big is provided to above-mentioned existing technology present situation.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of inclined plunger hydraulic pump/motor; Comprise cylinder body; The a plurality of plunger holes that have a center hole on the axial side plane of cylinder body and be provided with along the center hole circumference are equipped with the center plunger in the said center hole, the center plunger base is equipped with preloading spring; The front end of center plunger stretches out cylinder body and is connected with the central position bulb of rear-end of spindle; Said main shaft then is bearing in the housing through bearing, and the plunger that is equipped with in said each plunger hole is characterized in that: said plunger is made up of piston and piston rod; Said piston is positioned at plunger hole and ability axial slip; Liquid sealing cooperates between piston outer circumferential face and the plunger hole, adopts the bulb ways of connecting to link together between the rear end of piston rod and the front-end face of piston, and the front end of piston rod stretches out cylinder body and is connected with the bulb of rear-end of spindle.
The front-end face of above-mentioned piston has the concavity sphere; The rear end of piston rod has the convex sphere that matches with this concavity sphere; The ear end face of said piston has ladder hole, have screw to pass behind the shoulder hole to be threaded with the convex sphere of said piston rod and with the convex spherical axis in constraining in the concavity sphere.It is the bulb Placement between a kind of piston and the piston rod, and this mode has advantage easy to assembly, also can adopt existing other bulb linkage structure certainly.
The center position of above-mentioned piston rod and screw has the damping hole that is communicated with shoulder hole.
Have two annular mounting groove on the outer circumferential face of above-mentioned piston, seal ring is installed in the annular mounting groove.This structure can make the good liquid sealing of formation between piston outer circumferential face and the plunger hole.
For further improving the liquid sealing effect, have seal groove on the bottom side face of above-mentioned piston rod, in the sealing groove seal ring is installed.
Compared with prior art, the advantage of the utility model is: plunger is made up of piston and piston rod, and piston is positioned at plunger hole and ability axial slip; Liquid sealing cooperates between piston outer circumferential face and the plunger hole, adopts the bulb ways of connecting to link together between the front-end face of piston rod rear end and piston, is simple front and back slippage like this between piston and the plunger hole; Volumetric efficiency is high, and the seal ring between piston and the plunger hole is not easy to wear, only need adopt seal ring just can form liquid sealing between the two; Liquid sealing requires low; So the sealing cost is low, piston rod then plays and only drives cylinder body and rotate to realize joining oil, and functional reliability is good and transmitted power is big.
Description of drawings
Fig. 1 is the utility model embodiment's a structure sectional view;
Fig. 2 is the structure sectional view of plunger among the utility model embodiment;
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Like Fig. 1, shown in 2, be a preferred embodiment of the utility model.
A kind of inclined plunger hydraulic pump/motor comprises cylinder body 1, a plurality of plunger holes 12 that have a center hole 11 on the axial side plane of cylinder body 1 and be provided with along the center hole circumference; Center plunger 2 is housed in the center hole 11; Preloading spring 21 is equipped with in plunger 2 bottoms in center, and the front end of center plunger 2 stretches out cylinder body 1 and is connected with the central position bulb of main shaft 3 rear ends, and 3 on main shaft is bearing in the housing 5 through bearing 4; The plunger that is equipped with in each plunger hole 12; The rear end of housing 5 is connected with bonnet 9, and oil distribution casing 10 is installed on the bonnet 9, and bonnet 9 is provided with filler opening and oil outlet.It more than is the inclined plunger hydraulic pump/motor conventional structure.
The improvement of the utility model is:
As shown in Figure 2; Plunger is made up of piston 6 and piston rod 7, and piston 6 is positioned at plunger hole 12 and ability axial slip, and liquid sealing cooperates between piston 6 outer circumferential faces and the plunger hole 12; Have two annular mounting groove 63 on the outer circumferential face of piston 6, seal ring 64 is installed in the annular mounting groove 63.Adopt the bulb ways of connecting to link together between the front-end face of the rear end of piston rod 7 and piston 6; The front-end face that is piston 6 has concavity sphere 61; The rear end of piston rod 7 has the convex sphere 71 that matches with this concavity sphere 61; The ear end face of piston 6 has ladder hole 62, have screw 8 to pass that shoulder hole 62 back is threaded with the convex sphere 71 of piston rod and with convex sphere 71 axial constraints in concavity sphere 61.The center position of piston rod 7 and screw 8 has the damping hole 72 that is communicated with shoulder hole 62.The front end of piston rod 7 stretches out cylinder body 1 and is connected with the bulb of main shaft 3 rear ends.Have seal groove 73 on the bottom side face of piston rod 7, seal ring 74 is installed in the sealing groove 73.
When hydraulic oil got into plunger hole, pressure oil promoted piston motion earlier, and piston promotes piston rod movement again, and piston rod promotes main axis rotation, output speed and torque, and piston rod drives the cylinder body rotation and realizes joining oil simultaneously.It between piston and the plunger hole simple front and back slippage; Volumetric efficiency is high, and the seal ring between piston and the plunger hole is not easy to wear, only need adopt seal ring just can form liquid sealing between the two; Liquid sealing requires low; So the sealing cost is low, piston rod then plays and only drives cylinder body and rotate to realize joining oil, and functional reliability is good and transmitted power is big.
Claims (5)
1. inclined plunger hydraulic pump/motor; Comprise cylinder body (1); The a plurality of plunger holes (12) that have a center hole (11) on the axial side plane of cylinder body (1) and be provided with along the center hole circumference are equipped with center plunger (2) in the said center hole (11), preloading spring (21) is equipped with in center plunger (2) bottom; The front end of center plunger (2) stretches out cylinder body (1) and is connected with the central position bulb of main shaft (3) rear end; Said main shaft (3) then is bearing in the housing (5) through bearing (4), and the plunger that is equipped with in said each plunger hole (12) is characterized in that: said plunger is made up of piston (6) and piston rod (7); Said piston (6) is positioned at plunger hole (12) and ability axial slip; Liquid sealing cooperates between piston (6) outer circumferential face and the plunger hole (12), adopts the bulb ways of connecting to link together between the front-end face of the rear end of piston rod (7) and piston (6), and the front end of piston rod (7) stretches out cylinder body (1) and is connected with the bulb of main shaft (3) rear end.
2. inclined plunger hydraulic pump/motor according to claim 1; It is characterized in that: the front-end face of said piston (6) has concavity sphere (61); The rear end of piston rod (7) has the convex sphere (71) that matches with this concavity sphere (61); The ear end face of said piston (6) has ladder hole (62), have screw (8) to pass that shoulder hole (62) back is threaded with the convex sphere (71) of said piston rod and with convex sphere (71) axial constraint in concavity sphere (61).
3. inclined plunger hydraulic pump/motor according to claim 2 is characterized in that: the center position of said piston rod (7) and screw (8) has the damping hole (72) that is communicated with shoulder hole (62).
4. according to claim 1,2 or 3 described inclined plunger hydraulic pump/motors, it is characterized in that: have two annular mounting groove (63) on the outer circumferential face of said piston (6), seal ring (64) is installed in the annular mounting groove (63).
5. inclined plunger hydraulic pump/motor according to claim 4 is characterized in that: have seal groove (73) on the bottom side face of said piston rod (7), seal ring (74) is installed in the sealing groove (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203538624U CN202300825U (en) | 2011-09-15 | 2011-09-15 | Bent axis type plunger hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203538624U CN202300825U (en) | 2011-09-15 | 2011-09-15 | Bent axis type plunger hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300825U true CN202300825U (en) | 2012-07-04 |
Family
ID=46369734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203538624U Expired - Fee Related CN202300825U (en) | 2011-09-15 | 2011-09-15 | Bent axis type plunger hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850904A (en) * | 2012-11-28 | 2014-06-11 | 北京华德液压工业集团有限责任公司 | Oblique-shaft type axial plunger pump/motor with novel-structured plunger |
| CN104454753B (en) * | 2014-11-29 | 2017-06-13 | 桂林理工大学 | Modified motor spindle component and its processing method |
-
2011
- 2011-09-15 CN CN2011203538624U patent/CN202300825U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850904A (en) * | 2012-11-28 | 2014-06-11 | 北京华德液压工业集团有限责任公司 | Oblique-shaft type axial plunger pump/motor with novel-structured plunger |
| CN103850904B (en) * | 2012-11-28 | 2016-09-14 | 北京华德液压工业集团有限责任公司 | A kind of angle type axial piston pump/motor |
| CN104454753B (en) * | 2014-11-29 | 2017-06-13 | 桂林理工大学 | Modified motor spindle component and its processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20130915 |