CN114576123A - Oblique shaft type axial plunger pump - Google Patents
Oblique shaft type axial plunger pump Download PDFInfo
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- CN114576123A CN114576123A CN202111596852.8A CN202111596852A CN114576123A CN 114576123 A CN114576123 A CN 114576123A CN 202111596852 A CN202111596852 A CN 202111596852A CN 114576123 A CN114576123 A CN 114576123A
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- fork
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- 230000005540 biological transmission Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/128—Driving means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention belongs to the technical field of engineering machinery hydraulic systems, and particularly discloses an inclined shaft type axial plunger pump which comprises a pump body, a main shaft and a cylinder body, wherein the main shaft and the cylinder body are arranged in the pump body; the inclined shaft type axial plunger pump has the remarkable advantages of light weight, compact structure, easiness in wearing, low cost, safety, reliability and the like.
Description
Technical Field
The invention belongs to the technical field of engineering machinery hydraulic systems, and particularly relates to an inclined shaft type axial plunger pump.
Background
The axial line of the main shaft of the inclined axial plunger pump is not on the same straight line with the rotation axis of the cylinder body, but forms an included angle. The inclined shaft type axial plunger pump changes the volume of the sealed working cavity by means of the reciprocating motion of the plunger in the cylinder body, so as to realize oil absorption and oil pressing. The hydraulic system has the advantages of small volume, small friction loss, strong self-suction capability, high starting efficiency and the like, and is widely applied to the hydraulic system.
The existing inclined shaft type axial plunger pump mainly comprises a valve plate, a plunger pump rear end cover, a cylinder body, a piston, a return plate, a bearing, a main shaft and a central shaft. The axis of the transmission main shaft and the rotation axis of the cylinder body form an included angle, and the plunger is arranged in a cylinder body hole of the cylinder body and is hinged with a ball socket on the main shaft through a ball head at one end of the plunger. When the plunger moves from the lower dead point to the upper dead point, an oil suction stroke is obtained, and oil is sucked into the cylinder body through the oil suction port and the kidney-shaped window on the valve plate; when the plunger moves from the upper dead point to the lower dead point, a pressure oil stroke is generated, so that oil filled in a cylinder body hole of the cylinder body is discharged through the valve plate and the oil outlet; the center hole is arranged at the axis position of the cylinder body, a central shaft is arranged in the central hole, one end of the central shaft is hinged with a ball socket of the main shaft through a ball head, and the other end of the central shaft is provided with a pre-tightening force spring.
The power of the main shaft of the inclined shaft type plunger pump with the structure is mainly transmitted to the cylinder body through the central shaft of the cylinder body and the piston, so that the power of the main shaft can be transmitted to the cylinder body; moreover, because the ball head is hinged through the return disc, the structure has higher requirements on the structure, the material, the processing precision and the like of the return disc.
Disclosure of Invention
In order to solve a series of problems existing in the use of the inclined axial plunger pump, the invention provides the inclined axial plunger pump which can avoid impact collision between a plunger and a cylinder body, reduce vibration generated by the plunger pump, reduce noise, improve efficiency and effectively prolong the service life.
Based on the above purpose, the invention is realized by the following technical scheme:
the inclined shaft type axial plunger pump is characterized in that the main shaft and the cylinder body are connected through a universal joint, and two ends of the universal joint are respectively arranged on the central axis of the main shaft and the central axis of the cylinder body.
Preferably, the universal joint is a ball and fork joint.
Preferably, the ball-and-fork joint may be a constant velocity joint; the universal joint comprises a driving fork and a driven fork which are matched with each other, the driving fork is connected with the main shaft, and the driven fork is connected with the cylinder body; four matched driving curved surface grooves are arranged in the ball end of the driving fork, four matched driven curved surface grooves are arranged in the ball end of the driven fork, the driving curved surface grooves and the driven curved surface grooves are matched to form annular grooves, and transmission steel balls are arranged in the annular grooves.
Preferably, the included angle between the axis of the driving fork and the axis of the driven fork is 0-32 degrees; the included angle between the cylinder axis and the main shaft axis is 0-45 degrees.
Preferably, the pump body is provided with a rear end cover in clearance fit with the cylinder body, and the rear end cover is provided with a valve plate matched with the cylinder body; the main shaft is provided with a bearing matched with the main shaft, the bearing is provided with a bearing cover, and the bearing cover is matched with a front end cover arranged on the pump body.
Preferably, the driving fork and the driven fork of the universal joint are detachably connected with the main shaft and the cylinder body respectively through splines.
Preferably, a plurality of plunger holes matched with the plungers are uniformly distributed on the cylinder body, and an internal spline hole matched with the universal joint is formed in the central axis of the cylinder body.
Preferably, the central axis of the main shaft near one end of the cylinder body is provided with an internal spline hole matched with the driving fork, and the end surface of the main shaft near one end of the cylinder body is also provided with a plurality of ball sockets matched with the plunger.
Preferably, the plunger is arranged in two sections and comprises a conical column section in sliding connection with the inner wall of the plunger hole, and the conical column section is provided with a sealing ring tightly attached to the inner wall of the plunger hole; and the ball head section is matched with the ball socket on the main shaft.
Preferably, the main shaft is a stepped shaft, and the main shaft is movably connected with the pump body through a bearing assembly.
Compared with the prior art, the invention has the following beneficial effects:
compared with the prior art that the ball head of the central shaft in the central hole of the cylinder body is hinged with the main shaft for transmission, the invention omits a return plate, and the ball-fork type universal joint is arranged between the main shaft and the cylinder body for connection, so that the main shaft is provided with the driving fork, the cylinder body is provided with the driven fork, the main shaft drives the cylinder body to move through the ball-fork type universal joint, and through the improvement of the transmission structure in the prior art, the impact collision between the plunger and the cylinder body can be avoided, and the stress state of the plunger and the cylinder body is improved; the ball-and-fork type universal joint reduces the vibration generated in the operation process of the inclined shaft type axial plunger pump, reduces the noise, improves the efficiency, prolongs the service life of the inclined shaft type axial plunger pump, and has simple and compact structure and strong bearing capacity.
Drawings
FIG. 1 is a schematic diagram of a prior art axial plunger pump;
FIG. 2 is a schematic structural view of a slant shaft type axial plunger pump in embodiment 1;
FIG. 3 is a schematic structural view of a spherical-fork type universal joint structure in embodiment 1;
fig. 4 is a stress profile of a prior art plunger of a bent-axis plunger pump at a spindle torque of M =1200N × M;
fig. 5 is a diagram of the displacement deformation of the plunger of the prior art oblique-axis plunger pump at a spindle torque of M =1200N × M;
fig. 6 is a stress distribution diagram generated at a spindle moment of M =1200N × M in example 1;
fig. 7 is a graph of the displacement deformation generated in example 1 at a spindle moment of M =1200N × M.
In the figure, a plunger hole 1, a port plate 2, a cylinder 3, a rear end cover 4, a plunger 6, a bearing cover 8, a main shaft 9, a bearing 10, a front end cover 11, a driving fork 12, a transmission steel ball 13, a driven fork 14, a universal joint 16, a port plate 17, a rear end cover 18, a cylinder 19, a plunger 20, a return plate 21, a bearing 22, a main shaft 23 and a central shaft 24.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the scope of the present invention.
Example 1:
an inclined shaft type axial plunger pump is structurally shown in figures 1-3 and comprises a pump body, a main shaft 9 and a cylinder body 3, wherein the main shaft 9 and the cylinder body 3 are arranged in the pump body, and a plunger 6 is arranged between the main shaft 9 and the cylinder body 3. The universal joint 16 is a ball and socket joint. The ball-and-fork joint may be a constant velocity joint; the universal joint 16 comprises a driving fork 12 and a driven fork 14 which are matched with each other, the driving fork 12 is connected with the main shaft 9, and the driven fork 14 is connected with the cylinder 3; four matched driving curved surface grooves are arranged in the ball end of the driving fork 12, four matched driven curved surface grooves are arranged in the ball end of the driven fork 14, the driving curved surface grooves and the driven curved surface grooves are matched to form annular grooves, and transmission steel balls 13 are arranged in the annular grooves.
The included angle between the axis of the driving fork 12 and the axis of the driven fork 14 is 0-32 degrees; the included angle between the axis of the cylinder 3 and the axis of the main shaft 9 is 0-45 degrees. The pump body is provided with a rear end cover 4 which is in clearance fit with the cylinder body 3, and the rear end cover 4 is provided with a valve plate 2 which is matched with the cylinder body 3; the main shaft 9 is provided with a bearing 10 matched with the main shaft 9, the bearing 10 is provided with a bearing cover 8, and the bearing cover 8 is matched with a front end cover 11 arranged on the pump body.
The driving fork 12 and the driven fork 14 of the universal joint 16 are detachably connected with the main shaft 9 and the cylinder 3 through splines respectively. A plurality of plunger holes 1 matched with the plungers 6 are uniformly distributed on the cylinder body 3, and an inner spline hole matched with the universal joint 16 is formed in the central axis of the cylinder body 3. An inner spline hole matched with the driving fork 12 is formed in the central axis of one end, close to the cylinder body 3, of the main shaft 9, and a plurality of ball sockets matched with the plungers 6 are further formed in the end face, close to one end of the cylinder body 3, of the main shaft 9.
The plunger 6 is arranged in two sections and comprises a conical column section which is in sliding connection with the inner wall of the plunger hole 1, and a sealing ring which is tightly attached to the inner wall of the plunger hole 1 is arranged on the conical column section; and a ball head section which is matched with a ball socket on the main shaft 9. The main shaft 9 is a stepped shaft, and the main shaft 9 is movably connected with the pump body through a bearing assembly.
The existing inclined shaft type axial plunger pump mainly comprises a port plate 17, a rear end cover 18, a cylinder body 19, a plunger 20, a return plate 21, a bearing 22, a main shaft 23 and a central shaft 24. The axis of the main shaft 23 forms an included angle with the rotation axis of the cylinder 19, and the plunger 20 is arranged in the cylinder hole of the cylinder 19 and is hinged with the ball socket on the main shaft 9 through a ball head at one end thereof, as shown in fig. 1; as shown in fig. 2 and 3, the inclined shaft type axial plunger pump is characterized in that a main shaft 9 and a cylinder body 3 are arranged in a pump body, seven ball sockets are uniformly distributed on the end face of one end, extending into the pump body, of the main shaft 9, and the ball sockets are annularly distributed by taking the axis of the main shaft 9 as the center; an oil inlet is formed in one side of the rear end cover 4, an oil outlet is formed in the other side of the rear end cover, an oil drain port is formed in the pump body, a flow distribution disc 2 is arranged on the side of a cylinder body 3 in the pump body, a spherical flow distribution structure is formed between the flow distribution disc 2 and the cylinder body 3, and an included angle of 35 degrees is formed between the axis of the cylinder body 3 and the axis of a main shaft 9; one end of the cylinder body 3 is tightly attached to the valve plate 2, and an internal spline hole is formed in the central axis of the other end of the cylinder body 3; the cylinder body 3 is also provided with a plunger hole 1 matched with the plunger 6, the plunger 6 is arranged in the plunger hole 1, the plunger 6 is arranged in two sections and comprises a conical column section which is in sliding connection with the inner wall of the plunger hole 1, the conical column section is provided with a sealing ring which is clung to the inner wall of the plunger hole 1, and the plunger 6 also comprises a ball head section matched with a ball socket on the main shaft 9; the pump body is provided with a bearing 10 matched with the main shaft 9, the bearing 10 is provided with a bearing cover 8, and the bearing cover 8 is in clearance fit with the front end cover 11.
The cylinder body 3 is connected with the main shaft 9 through a universal joint 16, and the main shaft 9 and the cylinder body 3 are connected and driven through the universal joint 16 to form a synchronous connection structure; the universal joint 16 can be a constant velocity universal joint, which can keep the speed between the main shaft 9 and the cylinder 3 consistent, the cross angle between the two shafts is allowed to be 32 degrees at most, the universal joint 16 comprises a driving fork 12 and a driven fork 14 which are matched with each other, the driving fork 12 is connected with the main shaft 9, and the driven fork 14 is connected with the cylinder 3; four matched driving curved surface grooves are arranged in the ball end of the driving fork 12, four matched driven curved surface grooves are arranged in the ball end of the driven fork 14, the driving curved surface grooves and the driven curved surface grooves are matched to form annular grooves, and a transmission steel ball 13 is arranged in each annular groove; the ball end of the active fork 12 is provided with a pair of active curved plates which are in clearance fit; the ball end of the driven fork 14 is provided with a pair of driven curved plates which are in clearance fit, and the driven curved plates are matched with the driving curved plates; four curved surface grooves are respectively arranged on the driving fork 12 and the driven fork 14, and two intersected annular grooves are formed after assembly and are used as raceways of the transmission steel ball 13. Four drive balls 13 are placed in the grooves and the center balls are placed in the grooves in the center of the driving fork 12 and the driven fork 14 to center.
The main shaft 9 drives the cylinder body 3 and the plunger 6 to move through the universal joint 16, the plunger 6 makes reciprocating linear motion in the plunger hole 1, and when the plunger 6 moves in the direction far away from the valve plate 2, the volume of a sealed space formed by the plunger hole 1 and the plunger 6 is increased, so that oil absorption action is completed; when the piston moves towards the direction close to the port plate 2, the volume of a sealed space formed by the plunger hole 1 and the plunger 6 is reduced, and oil pressing action is finished; the oil suction way and the oil pressing way of the plunger pump are communicated through the valve plate 2 arranged between the valve distribution end face of the cylinder body 3 and a pumping and oil pressing channel of the plunger pump, and oil inlet and oil discharge are finally realized.
Fig. 4 is a stress distribution diagram of the plunger 20 of the prior art oblique plunger pump at the moment M =1200N × M of the main shaft 23; fig. 5 is a diagram of the displacement deformation of the plunger 20 of the prior art oblique plunger pump at the moment M =1200N × M of the main shaft 23. In fig. 4, the magnitude of the stress generated during the driving is represented by different colors. In fig. 5, the degrees of deformation of the cylinder 19, the plunger 20, and the spindle 23 are shown in different colors. The change of color from blue to red corresponds to the increase of displacement and stress respectively, and the smaller the generated displacement is, the better the rigidity and the stability of the transmission mechanism are. The lower the generated stress is, the better the bearing capacity is, and the larger the transmitted torque is. The red block is often the area of maximum displacement or maximum stress, for example, when the torque of the main shaft 9 of the prior oblique axis type plunger pump in fig. 5 is M =1200N × M, the maximum deformation is about 0.76mm, and the maximum deformation of the improved application is about 0.27mm under the same condition; it is apparent from this set of data that the improved device has a significant increase in stiffness and smoothness.
The overall displacement values are illustrated by comparing fig. 5 (prior art oblique axis plunger pump) and fig. 7 (oblique axis axial plunger pump of the present application): the improved device has obvious improvement on rigidity and stability. This experiment is illustrated by comparing the stress values of fig. 4 (prior art inclined axis plunger pump) and fig. 6 (inclined axis axial plunger pump of the present application): under the same moment, the less stress generated by each part indicates that the bearing capacity is better, and the transmitted moment is larger.
The constraints of fig. 6 and 7 are: when the moment of the main shaft 9 is M =1200N M, the cylinder body 3 is fixed, the transmission steel ball 13 and the annular groove do not slide relatively, and the contact of the transmission steel ball 13 and the annular groove is set as ' bonded ' (bound ') so as to carry out stress analysis on the condition that friction transmission exists among the transmission steel ball 13, the universal joint 16 and the main shaft 9. Fig. 6 is a stress distribution diagram of embodiment 1 of the present invention at a spindle 9 torque of M =1200N × M, where the maximum stress generated at 120N × M is about 2507MPa, and the maximum stress is generated in the area of the transmission steel ball 13, and the color of the maximum stress increases from blue to red. Fig. 7 is a graph showing the displacement deformation of example 1 of the present invention at a spindle 9 moment of M =1200N × M, and the maximum deformation of 0.27mm is generated at a spindle 9 moment of 120N × M, and the color from blue to red indicates an increase in the displacement deformation.
It can be clearly seen by comparing the prior art (shown in fig. 4 and 5) with the present application (shown in fig. 6 and 7) that the prior art shown in fig. 4 and 5 adopts the structure that the cylinder 19 is provided with the pre-tightening spring, the main shaft 23 is provided with the ball socket, the pre-tightening spring is hinged with the ball socket through the ball head on the central shaft for stress transmission, and the present application shown in fig. 6 and 7 is transmitted through the universal joint 16 for improving the hinged transmission structure of the ball head and the main shaft 9 by using the central shaft of the central hole of the cylinder 3.
Example 2:
an oblique axis type axial plunger pump, which is different from embodiment 1 in that: the included angle between the axis of the cylinder 3 and the axis of the main shaft 9 is 25 degrees.
Example 3:
an oblique axis type axial plunger pump, which is different from embodiment 1 in that: the included angle between the axis of the cylinder 3 and the axis of the main shaft 9 is 30 degrees.
Example 4:
an oblique axis type axial plunger pump, which is different from embodiment 1 in that: the angle between the axis of the driving fork 12 and the axis of the driven fork 14 is 16 degrees.
Example 5:
an oblique axis type axial plunger pump, which is different from embodiment 1 in that: the angle between the axis of the driving fork 12 and the axis of the driven fork 14 is 30 degrees.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, but rather as the following description is intended to cover all modifications, equivalents and improvements falling within the spirit and scope of the present invention.
Claims (10)
1. The inclined shaft type axial plunger pump is characterized in that the main shaft and the cylinder body are connected through a universal joint, and two ends of the universal joint are respectively arranged on the central axis of the main shaft and the central axis of the cylinder body.
2. The slant shaft axial plunger pump of claim 1, wherein the universal joint is a ball and fork type universal joint.
3. The slant shaft axial plunger pump of claim 2, wherein the ballfork joint may be a constant velocity joint; the universal joint comprises a driving fork and a driven fork which are matched with each other, the driving fork is connected with the main shaft, and the driven fork is connected with the cylinder body; the ball end of the driving fork is internally provided with four matched driving curved surface grooves, the ball end of the driven fork is internally provided with four matched driven curved surface grooves, the driving curved surface grooves and the driven curved surface grooves are matched to form annular grooves, and the annular grooves are internally provided with transmission steel balls.
4. The bent-axis axial plunger pump according to claim 3, wherein the included angle between the axis of the driving fork and the axis of the driven fork is 0-32 degrees; the included angle between the cylinder axis and the main shaft axis is 0-45 degrees.
5. The oblique axis type axial plunger pump according to claim 4, wherein the pump body is provided with a rear end cover in clearance fit with the cylinder body, and the rear end cover is provided with a port plate in fit with the cylinder body; the main shaft is provided with a bearing matched with the main shaft, the bearing is provided with a bearing cover, and the bearing cover is matched with a front end cover arranged on the pump body.
6. The bent-axis axial plunger pump according to claim 5, wherein the driving yoke and the driven yoke of the universal joint are detachably connected to the main shaft and the cylinder block, respectively, by splines.
7. The oblique axis type axial plunger pump according to claim 6, wherein a plurality of plunger holes matched with the plungers are uniformly distributed on the cylinder body, and an internal spline hole matched with the universal joint is arranged at the central axis of the cylinder body.
8. The oblique axis type axial plunger pump according to claim 7, wherein the main shaft is provided with an internally splined bore at a central axis near one end of the cylinder body for engaging with the driving fork, and a plurality of ball sockets for engaging with the plunger are provided at an end surface of the main shaft near one end of the cylinder body.
9. The oblique axis type axial plunger pump according to claim 8, wherein the plunger is provided in two stages, and comprises a conical cylinder section slidably connected with the inner wall of the plunger hole, and the conical cylinder section is provided with a sealing ring tightly attached to the inner wall of the plunger hole; and the ball head section is matched with the ball socket on the main shaft.
10. The bent-axis axial plunger pump of claim 9, wherein the main shaft is a stepped shaft, the main shaft being movably connected to the pump body by a bearing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111596852.8A CN114576123A (en) | 2021-12-24 | 2021-12-24 | Oblique shaft type axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111596852.8A CN114576123A (en) | 2021-12-24 | 2021-12-24 | Oblique shaft type axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114576123A true CN114576123A (en) | 2022-06-03 |
Family
ID=81769001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111596852.8A Pending CN114576123A (en) | 2021-12-24 | 2021-12-24 | Oblique shaft type axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114576123A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB862532A (en) * | 1958-02-24 | 1961-03-15 | Bendix Corp | Universal joint |
| US6604446B1 (en) * | 2000-09-11 | 2003-08-12 | Sauer-Danfoss Inc. | Inclined-axis variable displacement unit |
| CN101044317A (en) * | 2004-10-20 | 2007-09-26 | 马库斯利布赫尔国际公司 | Hydrostatic axial piston machine and use of said machine |
| CN101415944A (en) * | 2006-03-14 | 2009-04-22 | 朱荣辉 | Axial plunger pump or motor |
| JP2011033147A (en) * | 2009-08-04 | 2011-02-17 | Yumiko Sugiura | Constant velocity joint |
| 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 |
| CN104989636A (en) * | 2015-08-11 | 2015-10-21 | 贵阳海之力液压有限公司 | Port plate of swash plate type plunger pump and motor and matching cylinder body thereof |
| CN206111885U (en) * | 2016-08-29 | 2017-04-19 | 浙江康普瑞汽车零部件有限公司 | Strenghthened type engine transmission shaft |
| CN106593535A (en) * | 2015-10-14 | 2017-04-26 | 熵零控股股份有限公司 | Active driving fluid mechanism |
| CN109236599A (en) * | 2018-12-03 | 2019-01-18 | 广州市华欣液压有限公司 | Synchronous bent axis type axial piston pump |
| CN212028367U (en) * | 2020-05-12 | 2020-11-27 | 台州兴隆传动股份有限公司 | Lightweight universal joint fork based on magnetization flaw detection process |
| CN112796968A (en) * | 2020-12-03 | 2021-05-14 | 北京航空航天大学宁波创新研究院 | Embedded return stroke structure of sloping cam plate and have plunger pump of this structure |
-
2021
- 2021-12-24 CN CN202111596852.8A patent/CN114576123A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB862532A (en) * | 1958-02-24 | 1961-03-15 | Bendix Corp | Universal joint |
| US6604446B1 (en) * | 2000-09-11 | 2003-08-12 | Sauer-Danfoss Inc. | Inclined-axis variable displacement unit |
| CN101044317A (en) * | 2004-10-20 | 2007-09-26 | 马库斯利布赫尔国际公司 | Hydrostatic axial piston machine and use of said machine |
| CN101415944A (en) * | 2006-03-14 | 2009-04-22 | 朱荣辉 | Axial plunger pump or motor |
| JP2011033147A (en) * | 2009-08-04 | 2011-02-17 | Yumiko Sugiura | Constant velocity joint |
| 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 |
| CN104989636A (en) * | 2015-08-11 | 2015-10-21 | 贵阳海之力液压有限公司 | Port plate of swash plate type plunger pump and motor and matching cylinder body thereof |
| CN106593535A (en) * | 2015-10-14 | 2017-04-26 | 熵零控股股份有限公司 | Active driving fluid mechanism |
| CN206111885U (en) * | 2016-08-29 | 2017-04-19 | 浙江康普瑞汽车零部件有限公司 | Strenghthened type engine transmission shaft |
| CN109236599A (en) * | 2018-12-03 | 2019-01-18 | 广州市华欣液压有限公司 | Synchronous bent axis type axial piston pump |
| CN212028367U (en) * | 2020-05-12 | 2020-11-27 | 台州兴隆传动股份有限公司 | Lightweight universal joint fork based on magnetization flaw detection process |
| CN112796968A (en) * | 2020-12-03 | 2021-05-14 | 北京航空航天大学宁波创新研究院 | Embedded return stroke structure of sloping cam plate and have plunger pump of this structure |
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