CN206957866U - A kind of throttling oilhole plunger body structure based on kinetic pressure balancing - Google Patents
A kind of throttling oilhole plunger body structure based on kinetic pressure balancing Download PDFInfo
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- CN206957866U CN206957866U CN201720362941.9U CN201720362941U CN206957866U CN 206957866 U CN206957866 U CN 206957866U CN 201720362941 U CN201720362941 U CN 201720362941U CN 206957866 U CN206957866 U CN 206957866U
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- plunger
- annular groove
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Abstract
The utility model discloses a kind of throttling oilhole plunger body structure based on kinetic pressure balancing, including plunger, the plunger end is provided with bulb, and the plunger is provided with annular groove, cut-off is provided with inside the annular groove, annular groove is separated into two semicircle gaps of independence by the cut-off.During work, hydraulic oil enters the semicircle gap between plunger outer round surface and cylinder holes inwall and forms slip oil film, is in a kind of sliding friction state of suspension all the time in cylinder holes, and ensures balance of the plunger in cylinder holes under the effect of the pressure.The beneficial effects of the utility model are：The frictional force moved by dynamic pressure principle reduction plunger in cylinder holes, makes plunger body be in suspended state, significantly improves the mechanical efficiency of motor by dynamic pressure support to reduce friction loss.
Description
Technical field
The utility model belongs to hydraulic test parts technical field, more particularly to a kind of section based on kinetic pressure balancing
Oil flow hole plunger body structure.
Background technology
Plunger body is the kernel component in hydraulic motor, and cam-type axial piston motor includes main shaft, oil distribution casing, cylinder
Body, plunger, swash plate and piston shoes, main shaft pass through oil distribution casing, cylinder body and swash plate, and plunger is loaded in the plunger hole of cylinder body, the ball of plunger
Head end is equipped with the piston shoes contacted with swash plate, and the front end of piston shoes is provided with the spherical concave surface coordinated with the bulb of plunger, the rear end of piston shoes
Piston shoes chamber provided with cylinder, is connected, what piston shoes rear end contacted with swash plate is between piston shoes chamber and spherical concave surface provided with through hole
Disk sealing face, perpendicular to the oil of piston shoes chamber top surface suffered by the suffered oil liquid pressure perpendicular to the face in disk sealing face and piston shoes chamber
Hydraulic coupling sum balances each other along the horizontal component to the right on plunger axis direction with horizontal oil liquid pressure to the left suffered by plunger, post
It is caused to be when plug moves in cylinder body.Plunger cylinder friction pair in hydraulic motor is generation frictional force in hydraulic motor
One of main friction pairs, if the frictional force that plunger moves in plunger hole can be reduced, friction loss is reduced, can be to carry significantly
The operating efficiency of high motor.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of section based on kinetic pressure balancing
Oil flow hole plunger body structure.
To achieve the above object, the utility model uses following technical proposals：A kind of throttling oilhole based on kinetic pressure balancing
Plunger body structure, including plunger, the plunger end are provided with bulb, and the plunger is provided with annular groove, set inside the annular groove
There is cut-off, annular groove is separated into two independent semi-circular grooves by the cut-off, and the plunger body is present with separating the oilhole communicated.
As optimization, annular groove is 3 or multiple, is respectively positioned on plunger and stays within 2/3 distance of cylinder length, the plunger
The length that part in cylinder holes can be retained in when staying cylinder length for plunger positioned at the extreme position for stretching out cylinder body.
As optimization, a diameter of smaller 0.2mm than plunger body maximum gauge, the width 2-4mm of the annular groove.
As optimization, the cut-off width is 2-4mm.
During work, hydraulic oil enters the semicircle gap between plunger oval surface and cylinder holes inwall and forms slip oil film,
Plunger is in a kind of sliding friction state of suspension all the time in cylinder holes, and ensure plunger in cylinder holes under the effect of the pressure
In balance.
The beneficial effects of the utility model are：The frictional force moved by dynamic pressure principle reduction plunger in cylinder holes, is relied on
Dynamic pressure support makes plunger body be in suspended state to reduce friction loss, significantly improves the mechanical efficiency of motor.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is front view of the present utility model；
Fig. 2 is annular groove sectional view of the present utility model.
Shown in figure：1st, plunger, 2, bulb, 3, plunger hole, 4, arc section, 5, annular groove, 6, oilhole, 7, cut-off.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
A kind of throttling oilhole plunger body structure based on kinetic pressure balancing as shown in Figure 1, including plunger 1, the plunger 1
Front end is provided with bulb 2, offers plunger hole 3 along the direction of axis line of the plunger 1, passes through between the plunger 1 and bulb 2
The transition of arc section 4 is connected, and annular groove 5, the annular groove 5 are offered along its circumferencial direction on the external cylindrical surface of the plunger body 1
For 3, it is respectively positioned on plunger and stays within 2/3 distance of cylinder length, the plunger stays cylinder length to be located at stretching cylinder body for plunger
The length for the part that can be retained in during extreme position in cylinder holes.The annular groove it is a diameter of smaller than plunger body maximum gauge
0.2mm, width 3mm.The annular groove 5 is provided with cut-off 7, and the plunger 1 has an oilholes 6 communicated with cut-off 7, it is described every
The oil barrier of annular groove 5 is formed semicircle gap by disconnected 7 in two grooves, and the cut-off width is 2mm.To ensure pressure balance,
The interval of annular groove 5 is respectively 3mm, ensures that annular groove 5 is respectively positioned on plunger and stayed within 2/3 distance of cylinder length.
During work, hydraulic oil is introduced in oilhole 6, is formed in the semicircle gap that annular groove 5 and cut-off 7 are formed and slides oil
Film, can the pressure balance justified beyond the Great Wall of holding post, allow plunger body to be in the position in hole center all the time, without producing/or producing
The tilting moment of very little.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (4)
1. a kind of throttling oilhole plunger body structure based on kinetic pressure balancing, including plunger, the plunger end are provided with bulb, it is special
Sign is：The plunger is provided with annular groove, and cut-off is provided with inside the annular groove, and annular groove is separated into two solely by the cut-off
Semicircle gap is stood, the plunger is present with separating the oilhole communicated.
A kind of 2. throttling oilhole plunger body structure based on kinetic pressure balancing according to claim 1, it is characterised in that：It is described
Annular groove is 3 or multiple, is respectively positioned on plunger and stays within 2/3 distance of cylinder length, the cylinder length of staying of the plunger is plunger position
The length for the part that can be retained in when the extreme position of cylinder body is stretched out in cylinder holes.
3. according to a kind of any described throttling oilhole plunger body structure based on kinetic pressure balancing, its feature in claim 1 or 2
It is：A diameter of smaller 0.2mm than plunger body maximum gauge, the width 2-4mm of the annular groove.
A kind of 4. throttling oilhole plunger body structure based on kinetic pressure balancing according to claim 1, it is characterised in that：It is described
Cut-off width is 2-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720362941.9U CN206957866U (en) | 2017-04-10 | 2017-04-10 | A kind of throttling oilhole plunger body structure based on kinetic pressure balancing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720362941.9U CN206957866U (en) | 2017-04-10 | 2017-04-10 | A kind of throttling oilhole plunger body structure based on kinetic pressure balancing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206957866U true CN206957866U (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720362941.9U Active CN206957866U (en) | 2017-04-10 | 2017-04-10 | A kind of throttling oilhole plunger body structure based on kinetic pressure balancing |
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| CN (1) | CN206957866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898827A (en) * | 2022-11-24 | 2023-04-04 | 上海羿弓氢能科技有限公司 | Novel high-frequency action decompression cylinder for diaphragm compressor |
-
2017
- 2017-04-10 CN CN201720362941.9U patent/CN206957866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898827A (en) * | 2022-11-24 | 2023-04-04 | 上海羿弓氢能科技有限公司 | Novel high-frequency action decompression cylinder for diaphragm compressor |
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