CN115507011B - Two-dimensional shimmy suppression device with double springs, mass and liquid resistance for swash plate of plunger machine - Google Patents
Two-dimensional shimmy suppression device with double springs, mass and liquid resistance for swash plate of plunger machine Download PDFInfo
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- CN115507011B CN115507011B CN202211108880.5A CN202211108880A CN115507011B CN 115507011 B CN115507011 B CN 115507011B CN 202211108880 A CN202211108880 A CN 202211108880A CN 115507011 B CN115507011 B CN 115507011B
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- spring
- swash plate
- oil
- suppression device
- plunger
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- 230000001629 suppression Effects 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 title claims abstract description 11
- 230000009977 dual effect Effects 0.000 claims 5
- 238000013016 damping Methods 0.000 abstract description 22
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Classifications
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- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The two-dimensional shimmy suppression device of the swash plate of the plunger machine with double springs, mass and liquid resistance is arranged on one side of the swash plate, which is provided with a plunger and a sliding shoe, and comprises a fixed support, a movable piston, a spring, a movable support and a connecting sliding shoe which are sequentially arranged; the fixed support is fixed with the plunger pump shell, a central cavity with an open port is arranged in the fixed support, the movable piston and the spring are arranged in the central cavity, and one end of the movable support extends into the central cavity through the port; the connecting sliding shoes are fixed on the sloping cam plate, and the movable support and the connecting sliding shoes form a spherical hinge; the movable piston and the fixed support are respectively provided with a central through hole, and the central through holes of the fixed support are connected with an external oil delivery pipe. The spring, the oil and the damping function are used for damping the swash plate. The shimmy suppression device is provided with two groups which are respectively positioned at one side of the swash plate in the horizontal direction and the vertical direction, and simultaneously suppresses the vibration of the swash plate of the plunger pump in the horizontal direction and the vertical two-dimensional direction, so that the abrasion of the parts of the plunger pump caused by the vibration is reduced.
Description
Technical Field
The invention relates to the field of hydraulic transmission, in particular to a two-dimensional shimmy suppression device for a swash plate of a plunger machine with double springs, masses and hydraulic resistances.
Background
The axial plunger pump is used as a key element of a hydraulic system and provides a power source for the hydraulic system, has the advantages of high output power per unit volume, high efficiency, high flow and the like, and is widely used in the field of aerospace in the ship industry. With the continuous development of hydraulic technology, high-pressure, high-speed and high-power hydraulic transmission technology is one of the main directions.
The high frequency vibration of the swash plate in the plunger pump causes the pulsation of high pressure oil discharged from the pump to be intensified, and the vibration of the swash plate causes the vibration of the mechanical structure in the pump to be intensified, which causes the abrasion speed of elements in the plunger pump to be intensified, and influences the performance and service life of the hydraulic system and the plunger pump, so that facilities are necessary to attenuate the vibration of the swash plate. In the aspect of damping the vibration of the swash plate, damping holes are usually added in front of a displacement control plunger cavity to increase the damping of the swash plate, but the plunger cavity usually has larger volume, the effect of the damping holes is not large when the angle of the swash plate is overlarge, and meanwhile, the traditional damping method is used for damping the swash plate of the plunger pump in one direction, so that the damping effect is not obvious.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a two-dimensional shimmy suppression device for a swash plate of a plunger machine with double springs, which is generally arranged on two axial directions of the swash plate, wherein the two axial directions are vertical to each other, the shimmy suppression device has small change on a plunger pump, and can simultaneously suppress the two-dimensional swinging of the swash plate of the plunger pump through damping provided by the hydraulic resistors and the springs and the action of inertia force generated by the motion of movable pistons on the swash plate, thereby achieving the effect of suppressing the overall high-frequency vibration of the swash plate of the plunger pump.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The two-dimensional shimmy suppression device of the swash plate of the plunger machine with double springs, mass and liquid resistance is arranged on one side of the swash plate, which is provided with a plunger and a sliding shoe, and comprises a fixed support, a movable piston, a spring, a movable support and a connecting sliding shoe which are sequentially arranged;
The fixed support is fixed with the plunger pump housing, a central cavity with an open port is arranged in the fixed support, the movable piston and the spring are arranged in the central cavity, one end of the movable support stretches into the central cavity through the port, so that one end of the spring abuts against the movable piston, and the other end of the spring abuts against the movable support; the connecting sliding shoes are fixed on the sloping cam plate, the other end of the movable support is provided with a spherical end head, and the spherical end head and the connecting sliding shoes form a spherical hinge; the movable piston and the fixed support are respectively provided with a central through hole, the central through hole of the movable piston divides the central cavity into a spring-free oil cavity and a spring-loaded oil cavity, and the central through hole of the fixed support is connected with an external oil delivery pipe so as to input oil into the spring-free oil cavity and the spring-loaded oil cavity.
The shimmy suppression device is provided with two groups which are respectively positioned at one side of the swash plate in the horizontal direction and the vertical direction.
The movable piston is tightly attached to the inner wall of the central cavity.
The movable support is tightly attached to the inner wall of the central cavity.
The fixed support is fixedly connected with the plunger pump housing through bolts.
And a limiting boss is arranged on the periphery of the movable support.
The external oil delivery pipe adopts an oil delivery pipe led out from an oil supply device of the plunger pump.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
According to the invention, the movable piston and the movable support move axially in the central cavity of the fixed support, the oil delivery pipe conveys oil into the central cavity, the two oil cavities are communicated through the central through hole of the movable piston, and the volumes of the two oil cavities are changed along with the change of the vibration frequency of the swash plate, the change of the inclination angle of the swash plate and the change of the pressure of input oil; specifically, when the swash plate vibrates, the movable support moves, and the movable piston moves under the action of the acting force generated by the spring and the action of the force generated by the oil hydraulic pressure, so that the volumes of the two oil cavities also change along with the movement of the movable piston;
The invention solves the high-frequency vibration problem of the swash plate, and the vibration of the swash plate of the plunger pump in the horizontal and vertical two-dimensional directions is restrained by the shimmy restraining device arranged in the horizontal and vertical directions; the invention uses a liquid resistance-mass-spring coupling system, and simultaneously utilizes damping provided by liquid resistance and a spring and the action of inertia force generated by the movement of a movable piston on a swash plate to enable the inertia force and the damping to act together.
Drawings
FIG. 1 is a schematic diagram of two sets of shimmy suppression devices mounted to a plunger pump;
FIG. 2 is a schematic diagram of a shimmy suppression device;
FIG. 3 is a schematic cross-sectional view of a shimmy suppression device mounted in the y-axis of a plunger pump;
FIG. 4 is a schematic diagram of a shimmy suppression device;
fig. 5 is a schematic diagram of two sets of shimmy suppression devices mounted to a plunger pump.
Reference numerals: the shimmy suppression device 1, 6, a swash plate 2, a slipper 3, a plunger 4, a swash plate adjuster 5, a connecting slipper 7, a fixed support 8, a springless oil chamber 9, a movable piston 10, a central through hole 11 of the movable piston, a spring 12, a spring oil chamber 13 and a movable support 14.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 3, the present embodiment is provided with two sets of shimmy suppression devices 1, 6 respectively located at one side of the swash plate 2 in the horizontal and vertical directions, specifically, the shimmy suppression devices are mounted on one side of the swash plate 2 where the plunger 4 and the shoe 3 are located;
the shimmy suppression device comprises a fixed support 8, a movable piston 10, a spring 12, a movable support 14 and a connecting sliding shoe 7 which are sequentially arranged;
The fixed support 8 is fixed with the plunger pump housing, a central cavity with an open port is arranged in the fixed support 8, the movable piston 10 and the spring 12 are arranged in the central cavity, one end of the movable support 14 extends into the central cavity through the port, so that one end of the spring 12 abuts against the movable piston 10, and the other end of the spring 12 abuts against the movable support 14; the movable piston 10 and the movable support 14 are connected through the spring 12, and the spring 12 is tightly attached to the central cavity of the fixed support 8, so that the uniform stress of the contact surfaces of the movable piston 10 and the movable support 14 and the spring 12 is ensured, and unnecessary friction between the movable piston 10 and the movable support 14 and the inner wall of the central cavity is avoided;
The connecting sliding shoes 7 are fixed on the swash plate 2, the other end of the movable support 14 is provided with a spherical end head, and the spherical end head is matched with the connecting sliding shoes 7 to form a spherical hinge; specifically, a limit boss is arranged on the periphery of the movable support 14, the end face of the limit boss is provided with the spherical end head, and the radius of the spherical end head is slightly smaller than the inner diameter of the groove of the connecting sliding shoe 7 so as to ensure that the spherical end head is always positioned in the connecting sliding shoe 7;
The movable piston 10 and the fixed support 8 are respectively provided with a central through hole, the central through hole 11 of the movable piston 10 divides the central cavity into a springless oil cavity 9 and a springy oil cavity 13, and the central through hole of the fixed support 8 is connected with an external oil delivery pipe so as to input oil into the springless oil cavity 9 and the springy oil cavity 13; specifically, the external oil delivery pipe adopts an oil delivery pipe led out from the plunger pump oil supply device. More specifically, the oil delivery pipe of the shimmy suppression device is connected with the oil delivery pipe led out from the oil supply device of the plunger pump, so that the oil pressure can be controlled, and the oil pressure can be adjusted according to different working conditions of the plunger pump.
The plunger pump is provided with a swash plate adjuster 5 which is arranged on two sides of the swash plate and used for fixing the swash plate so that the swash plate does not deviate from the original position by a large margin.
In the embodiment, all parts of the shimmy suppression device are coaxially assembled and connected; the movable piston 10 and the movable support 14 are respectively tightly attached to the inner wall of the central cavity, and the diameter of the spring 12 is slightly smaller than the diameter of the inner cavity of the central cavity.
The fixed support 8 is fixedly connected with the plunger pump housing through bolts; specifically, the fixed support 8 is provided with a boss, the boss is provided with a threaded hole, the corresponding plunger pump housing is also provided with a threaded hole, and the fixed support 8 is fixedly connected with the plunger pump through threads and a locking nut.
As shown in fig. 4 to 5, in the shimmy suppression device, C1 and K1 are equivalent damping and stiffness of the oil in the springless oil chamber 9, C2 and K2 are overall equivalent damping and stiffness of the oil and the spring in the springless oil chamber 13, and P1, P2, P3 and P x1、Px2、Px3、Py1、Py2、Py3 are pressures of the oil acting on corresponding surfaces thereof; equivalent oil in the springless oil cavity 9 to be a connecting piece for providing damping and rigidity of C1 and K1, equivalent oil in the springless oil cavity 13 to be a connecting piece for providing damping and rigidity of C2 and K2; the oil and the spring are equivalent to a connecting piece with certain damping and rigidity to connect the swash plate and the plunger pump housing, so that the vibration of the swash plate is reduced.
The working process and principle of the invention are as follows:
The fixed support 8, the movable piston 10 and the movable support 14 are sleeved to form an integrally sealed cavity communicated with the two oil cavities, and the oil delivery pipe conveys the oil into the central cavity so as to damp the vibration of the swash plate 2; the volumes of the two liquid cavities are changed along with the change of the vibration frequency of the swash plate 2, the change of the inclination angle of the swash plate 2 and the change of the pressure of the input oil liquid;
The movable support 14 generates an inertia force due to the self-mass when in motion, and the inertia force can act on the swash plate 2 of the plunger pump to play a role in damping the swash plate 2;
Specifically, two oil chambers formed by the fixed bearing 8, the movable piston 10, and the movable bearing 14, the volumes of which change with the vibration of the swash plate 2; when the oil pressure is stable, in a period of vibration of the swash plate 2, the process of driving the movable support 14 to move so as to enlarge the total volume of the oil cavities is called as a vibration process of the swash plate 2, and the process of driving the movable support 14 to move so as to reduce the total volume of the oil cavities by the vibration of the swash plate 2 is called as a vibration return stroke of the swash plate 2. In the vibration process stage of the swash plate 2, the volume of the spring oil cavity 13 is faster than that of the springless oil cavity 9, the movable support 14 moves to change the length of the spring 12, the tension generated by the spring 12 acts on the movable piston 10, meanwhile, the oil damping also acts on the movable piston 10, the movable piston 10 moves under the action of the force of the spring 12 and the damping force, the volume of the springless oil cavity 9 is also changed along with the spring oil cavity, and the total volume change of the spring oil cavity 13 in the process is larger than that of the springless oil cavity 9; in the vibration return stage of the swash plate 2, the total volume of the oil cavities is reduced, the volume change of the spring oil cavity 13 is earlier than that of the spring oil cavity 9, and the spring 12 is unchanged in length in the starting stage of the vibration return stage of the swash plate 2 and is still not pulled by the force of the movable piston 10, so that the volume change of the spring oil cavity 9 is slower in the starting stage than that of the process stage.
According to the invention, the shimmy suppression device is arranged on the horizontal and vertical directions of the plunger pump, and the device is tightly connected with the plunger pump housing through the bolts, so that the vibration of the swash plate 2 in the horizontal and vertical directions can be suppressed at the same time.
In summary, the oil is conveyed into the oil cavity by the oil conveying pipe, and the shimmy suppression device is used for relieving the high-frequency vibration of the swash plate 2 by damping the spring 12 and the oil on the movable support 14 and the action of the inertial force generated by the movement of the movable piston 10 on the movable support 14; meanwhile, the oil liquid pressure is controllable, and the oil liquid pressure can be regulated to obtain the maximum vibration reduction effect aiming at the plunger pump working under different working powers.
The invention can further effectively attenuate the high-frequency vibration of the swash plate of the plunger pump, so that the integral damping of the swash plate is kept unchanged; meanwhile, the invention has less refitting to the plunger pump, has obvious effect and can be widely applied.
Claims (6)
1. The two-dimensional shimmy suppression device with double springs, mass and liquid resistance for the swash plate of the plunger machine is characterized in that: the shimmy suppression device is arranged on one side of the swash plate, which is provided with a plunger and a sliding shoe, and is provided with two groups which are respectively positioned on two axial directions of the horizontal and vertical directions of the swash plate and are perpendicular to each other, and the shimmy suppression device comprises a fixed support, a movable piston, a spring, a movable support and a connecting sliding shoe which are sequentially arranged;
The fixed support is fixed with the plunger pump housing, a central cavity with an open port is arranged in the fixed support, the movable piston and the spring are arranged in the central cavity, one end of the movable support stretches into the central cavity through the port, so that one end of the spring abuts against the movable piston, and the other end of the spring abuts against the movable support; the connecting sliding shoes are fixed on the sloping cam plate, the other end of the movable support is provided with a spherical end head, and the spherical end head and the connecting sliding shoes form a spherical hinge; the movable piston and the fixed support are respectively provided with a central through hole, the central through hole of the movable piston divides the central cavity into a spring-free oil cavity and a spring-loaded oil cavity, and the central through hole of the fixed support is connected with an external oil delivery pipe so as to input oil into the spring-free oil cavity and the spring-loaded oil cavity.
2. The plunger machine swashplate two-dimensional shimmy suppression device with dual spring-mass-hydraulic resistance of claim 1, wherein: the movable piston is tightly attached to the inner wall of the central cavity.
3. The plunger machine swashplate two-dimensional shimmy suppression device with dual spring-mass-hydraulic resistance of claim 1, wherein: the movable support is tightly attached to the inner wall of the central cavity.
4. The plunger machine swashplate two-dimensional shimmy suppression device with dual spring-mass-hydraulic resistance of claim 1, wherein: the fixed support is fixedly connected with the plunger pump housing through bolts.
5. The plunger machine swashplate two-dimensional shimmy suppression device with dual spring-mass-hydraulic resistance of claim 1, wherein: and a limiting boss is arranged on the periphery of the movable support.
6. The plunger machine swashplate two-dimensional shimmy suppression device with dual spring-mass-hydraulic resistance of claim 1, wherein: the external oil delivery pipe adopts an oil delivery pipe led out from an oil supply device of the plunger pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211108880.5A CN115507011B (en) | 2022-09-13 | 2022-09-13 | Two-dimensional shimmy suppression device with double springs, mass and liquid resistance for swash plate of plunger machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211108880.5A CN115507011B (en) | 2022-09-13 | 2022-09-13 | Two-dimensional shimmy suppression device with double springs, mass and liquid resistance for swash plate of plunger machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115507011A CN115507011A (en) | 2022-12-23 |
| CN115507011B true CN115507011B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211108880.5A Active CN115507011B (en) | 2022-09-13 | 2022-09-13 | Two-dimensional shimmy suppression device with double springs, mass and liquid resistance for swash plate of plunger machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115507011B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087971A (en) * | 1992-12-05 | 1994-06-15 | 杜长春 | Axial plunger type variable capacity pump |
| KR20020090245A (en) * | 2001-05-25 | 2002-12-02 | 동명중공업주식회사 | Forced Lubricant in Swash Plate for Axial Piston Pump |
| WO2017015782A1 (en) * | 2015-07-24 | 2017-02-02 | 杭州绿聚科技有限公司 | Novel axial piston pump |
| CN112177875A (en) * | 2020-09-29 | 2021-01-05 | 太原科技大学 | Swash plate driving flow distribution integrated variable displacement plunger pump |
-
2022
- 2022-09-13 CN CN202211108880.5A patent/CN115507011B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087971A (en) * | 1992-12-05 | 1994-06-15 | 杜长春 | Axial plunger type variable capacity pump |
| KR20020090245A (en) * | 2001-05-25 | 2002-12-02 | 동명중공업주식회사 | Forced Lubricant in Swash Plate for Axial Piston Pump |
| WO2017015782A1 (en) * | 2015-07-24 | 2017-02-02 | 杭州绿聚科技有限公司 | Novel axial piston pump |
| CN112177875A (en) * | 2020-09-29 | 2021-01-05 | 太原科技大学 | Swash plate driving flow distribution integrated variable displacement plunger pump |
Non-Patent Citations (1)
| Title |
|---|
| 轴向柱塞泵滑靴的动力学特性仿真分析;段珊珊;张晓刚;权龙;程珩;;液压与气动;20170915(第09期);全文 * |
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| CN115507011A (en) | 2022-12-23 |
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