CN201794733U - Axial plunger pump - Google Patents
Axial plunger pump Download PDFInfo
- Publication number
- CN201794733U CN201794733U CN2010202924374U CN201020292437U CN201794733U CN 201794733 U CN201794733 U CN 201794733U CN 2010202924374 U CN2010202924374 U CN 2010202924374U CN 201020292437 U CN201020292437 U CN 201020292437U CN 201794733 U CN201794733 U CN 201794733U
- Authority
- CN
- China
- Prior art keywords
- plunger
- swash plate
- piston shoes
- cylinder body
- skid shoe
- 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 - Fee Related
Links
Abstract
The utility model discloses an axial plunger pump. The plunger pump comprises a main shaft, an oil distribution disc, a cylinder body, a plunger, a swash plate and a skid shoe, wherein the main shaft passes through the oil distribution disc, the cylinder body and the swash plate; the plunger is arranged in a plunger hole of the cylinder body; the bulb end of the plunger is provided with the skid shoe which is contacted with the swash plate; a cavity is formed inside the plunger; a compression spring is arranged in the cavity; and one end of the plunger is pressed against the front part of the cavity, and the other end of the plunger is pressed against the bottom of the plunger hole. A return mechanism is simplified, the compression spring is arranged in the plunger and an intermittent gap is prevented from forming between the bulb part of the plunger and the skid shoe due to inertia force produced by reciprocating movement of the plunger under the action of the restoring force of the spring, so that the airtightness of the skid shoe is ensured; and a plunger-skid shoe structure is constrained rigidly instead of being constrained flexibly, so that the skid shoe does not lose efficacy due to spherical wearing under the action of radial force produced by the thrust force of the swash plate on the skid shoe and variable frictional force between the skid shoe and the swash plate, and reliable operation of the axial plunger pump is ensured.
Description
Technical field
The utility model relates to a kind of axial piston pump.
Background technique
Axial piston pump is that a plurality of plungers are configured on the circumference of a common cylinder body, and makes its plunger center line parallel with cylinder center line.When cylinder body rotates, by certain mechanism plunger can be done in the plunger hole of cylinder body and do relatively reciprocating motion, realize the function of oil suction and oil extraction by oil distribution mechanism.
Axial piston pump commonly used at present generally comprises oil distribution casing, cylinder body, plunger, main shaft and swash plate, and wherein swash plate and oil distribution casing maintain static, main axis rotation, thus the plunger that drives in cylinder body and the cylinder body rotates together.The bulb end of plunger is equipped with piston shoes, and piston shoes are provided with the backhaul dish that rotates with plunger, piston shoes outward, pushes backhaul dish as the central spring that supports by steel ball with cylinder body, and the backhaul dish tightly is pressed in piston shoes on the swash plate, makes the piston shoes bottom keep sealing.When cylinder body rotated, the intake side plunger was pressed in piston shoes on the swash surfaces by central spring, steel ball and backhaul dish and slides and oil suction, and oil extraction lateral column plug relies on swash plate to force to push back and oil extraction.Because piston shoes are adjacent on swash surfaces, plunger is reciprocating in cylinder body in the cylinder body rotation.In the main axis rotation process in one week, each plunger to-and-fro motion is once finished an oil suction and oil extraction.In the said structure, need to be provided with return facilities in the cylinder body to finish oil-absorbing process, the complex structure of cylinder body like this, running is loaded down with trivial details.
Summary of the invention
The utility model purpose is: a kind of axial piston pump is provided, and its structure is simplified, and is reliable simple, can the reasonably optimizing structure, reduce production costs, and service behaviour is improved.
The technical solution of the utility model is: a kind of axial piston pump, comprise main shaft, oil distribution casing, cylinder body, plunger, swash plate and piston shoes, described main shaft passes oil distribution casing, cylinder body and swash plate, described plunger is loaded in the plunger hole of cylinder body, the bulb end of described plunger is equipped with the piston shoes that contact with swash plate, and described plunger inside is provided with cavity, and the spring of compression is housed in this cavity, described spring one end is against the front portion of cavity, and the other end is against the bottom of plunger hole.
The further technological scheme of the utility model is: a kind of axial piston pump, comprise main shaft, oil distribution casing, cylinder body, plunger, swash plate and piston shoes, described main shaft passes oil distribution casing, cylinder body and swash plate, described plunger is loaded in the plunger hole of cylinder body, the bulb end of described plunger is equipped with the piston shoes that contact with swash plate, and described plunger inside is provided with cavity, and the spring of compression is housed in this cavity, described spring one end is against the front portion of cavity, and the other end is against the bottom of plunger hole; Described piston shoes comprise sealing strip and outer auxilliary supporting, are provided with the sphere that cooperates with the bulb of plunger in the described sealing strip, and the supporting surface of described sealing strip has the piston shoes chamber, has through hole between the sphere of piston shoes chamber and sealing strip.
The more detailed technological scheme of the utility model is: a kind of axial piston pump, comprise main shaft, oil distribution casing, cylinder body, plunger, swash plate and piston shoes, described main shaft passes oil distribution casing, cylinder body and swash plate, described plunger is loaded in the plunger hole of cylinder body, the bulb end of described plunger is equipped with the piston shoes that contact with swash plate, and described plunger inside is provided with cavity, and the spring of compression is housed in this cavity, described spring one end is against the front portion of cavity, and the other end is against the bottom of plunger hole; Described piston shoes comprise sealing strip and outer auxilliary supporting, are provided with the sphere that cooperates with the bulb of plunger in the described sealing strip, and the supporting surface of described sealing strip has the piston shoes chamber, has through hole between the sphere of piston shoes chamber and sealing strip; The slide plate that is fixed on the swash plate is housed between the end face of described piston shoes and the swash plate; Porous slab is equipped with in the sealing strip outside of described piston shoes, and described porous slab is provided with back-up ring outward.
The utility model has the advantages that:
1. the utility model improves on the existing structure basis, simplified backhaul mechanism, in plunger, set up the spring of compression, under the restoring force effect of spring, can not guarantee the sealing of piston shoes between the ball head of plunger and the piston shoes owing to space intermittently appears in the reciprocating inertial force of plunger;
2. plunger of the present utility model-piston shoes structure becomes rigid constraint by flexible constraint, make that piston shoes the Problem of Failure that sphere abrasion brings can not occur under the frictional force action that changes between radial force that swash plate produces piston shoes thrust and piston shoes and the swash plate, guaranteed the reliable operation of axial piston pump.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is a structural representation of the present utility model.
Wherein: 1 is main shaft; 2 is oil distribution casing; 3 is cylinder body; 4 is plunger; 5 is swash plate; 6 is piston shoes; 7 is plunger hole; 8 is spring; 9 is slide plate; 10 is porous slab; 11 is the piston shoes chamber; 12 is back-up ring.
Embodiment
Embodiment: a kind of axial piston pump, as shown in Figure 1, comprise main shaft 1, oil distribution casing 2, cylinder body 3, plunger 4, swash plate 5 and piston shoes 6, described main shaft 1 passes oil distribution casing 2, cylinder body 3 and swash plate 5, and described plunger 4 is loaded in the plunger hole 7 of cylinder body 2, and the bulb end of described plunger 4 is equipped with the piston shoes 6 that contact with swash plate 5, described plunger 4 inside are provided with cavity, the spring 8 of compression is housed in this cavity, and described spring 8 one ends are against the front portion of cavity, and the other end is against the bottom of plunger hole 7.
Described piston shoes 6 comprise sealing strip and outer auxilliary supporting, are provided with the sphere that cooperates with the bulb of plunger 4 in the described sealing strip, and the supporting surface of described sealing strip has piston shoes chamber 11, has through hole between the sphere of piston shoes chamber 11 and sealing strip.The sectional area in described piston shoes chamber 11 can be approaching with the sectional area of plunger 4.The slide plate 9 that is fixed on the swash plate 5 is housed between the end face of described piston shoes 6 and the swash plate 5.Porous slab 10 is equipped with in the sealing strip outside of described piston shoes 6, the described porous slab 10 outer back-up rings 12 that are provided with.
In said structure, swash plate 5, slide plate 9 and oil distribution casing 2 maintain static, and main shaft 1 is by prime mover driven rotary, and main shaft 1 drives cylinder body 3, be loaded on plunger 4 in the plunger hole 7 and piston shoes 6, porous slab 10 etc. rotated together.Spring 8 in the plunger 4 is in compressive state, makes the bulb end of plunger 4 to piston shoes 6 impacting force be arranged, and piston shoes 6 remain with slide plate 9 and contact.As shown in Figure 1, when main shaft 1 rotation, be positioned at plunger 4 ecto-entad motion under the compacting of swash plate 5 of top, spring 8 further compresses, and its sealing area is carried out the oil extraction action from large to small; Be positioned at plunger 4 motion from inside to outside under the restoring force effect of spring 8 of below, this moment, spring 8 still was in compressive state, made piston shoes 6 and slide plate 9 be adjacent to, and its sealing area is changed from small to big, and carries out the oil suction action.
The utility model improves on the existing structure basis, simplified backhaul mechanism, in plunger 4, set up the spring 8 of compression, under the restoring force effect of spring 8, can not guarantee the sealing of piston shoes 6 between the ball head of plunger 4 and the piston shoes 6 owing to space intermittently appears in plunger 4 reciprocating inertial force; Plunger of the present utility model-piston shoes structure becomes rigid constraint by flexible constraint, make that piston shoes 6 the Problem of Failure that sphere abrasion brings can not occur under the frictional force action of variation between radial force that 5 pairs of piston shoes 6 thrusts of swash plate produce and piston shoes 6 and the swash plate 5, guaranteed the reliable operation of axial piston pump.
Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (4)
1. axial piston pump, comprise main shaft (1), oil distribution casing (2), cylinder body (3), plunger (4), swash plate (5) and piston shoes (6), described main shaft (1) passes oil distribution casing (2), cylinder body (3) and swash plate (5), described plunger (4) is loaded in the plunger hole (7) of cylinder body (2), the bulb end of described plunger (4) is equipped with the piston shoes (6) that contact with swash plate (5), it is characterized in that: described plunger (4) inside is provided with cavity, the spring (8) of compression is housed in this cavity, described spring (8) one ends are against the front portion of cavity, and the other end is against the bottom of plunger hole (7).
2. axial piston pump according to claim 1, it is characterized in that: described piston shoes (6) comprise sealing strip and outer auxilliary supporting, be provided with the sphere that cooperates with the bulb of plunger (4) in the described sealing strip, the supporting surface of described sealing strip has piston shoes chamber (11), has through hole between the sphere of piston shoes chamber (11) and sealing strip.
3. axial piston pump according to claim 1 and 2 is characterized in that: the slide plate (9) that is fixed on the swash plate (5) is housed between the end face of described piston shoes (6) and the swash plate (5).
4. axial piston pump according to claim 2 is characterized in that: porous slab (10) is equipped with in the sealing strip outside of described piston shoes (6), the outer back-up ring (12) that is provided with of described porous slab (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202924374U CN201794733U (en) | 2010-08-16 | 2010-08-16 | Axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202924374U CN201794733U (en) | 2010-08-16 | 2010-08-16 | Axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794733U true CN201794733U (en) | 2011-04-13 |
Family
ID=43849643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202924374U Expired - Fee Related CN201794733U (en) | 2010-08-16 | 2010-08-16 | Axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794733U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863980A (en) * | 2016-04-14 | 2016-08-17 | 燕山大学 | Axial plunger pump realizing noise reduction by indexing angles |
| CN110067720A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of bearing bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure |
| CN112177874A (en) * | 2020-09-29 | 2021-01-05 | 太原科技大学 | Swash plate driving and flow distribution integrated plunger pump |
| CN112983772A (en) * | 2021-03-30 | 2021-06-18 | 中航力源液压股份有限公司 | Axial plunger pump return device capable of reducing wear of sliding shoe |
| CN114046231A (en) * | 2021-11-05 | 2022-02-15 | 中国航发北京航科发动机控制系统科技有限公司 | Friction structure of sliding shoe and supporting disk |
-
2010
- 2010-08-16 CN CN2010202924374U patent/CN201794733U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863980A (en) * | 2016-04-14 | 2016-08-17 | 燕山大学 | Axial plunger pump realizing noise reduction by indexing angles |
| CN105863980B (en) * | 2016-04-14 | 2018-02-09 | 燕山大学 | A kind of Index angle noise reduction axial plunger pump |
| CN110067720A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of bearing bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure |
| CN112177874A (en) * | 2020-09-29 | 2021-01-05 | 太原科技大学 | Swash plate driving and flow distribution integrated plunger pump |
| CN112983772A (en) * | 2021-03-30 | 2021-06-18 | 中航力源液压股份有限公司 | Axial plunger pump return device capable of reducing wear of sliding shoe |
| CN114046231A (en) * | 2021-11-05 | 2022-02-15 | 中国航发北京航科发动机控制系统科技有限公司 | Friction structure of sliding shoe and supporting disk |
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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: 20110413 Termination date: 20150816 |
|
| EXPY | Termination of patent right or utility model |