CN114165401B - Electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly - Google Patents
Electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly Download PDFInfo
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- CN114165401B CN114165401B CN202111514012.2A CN202111514012A CN114165401B CN 114165401 B CN114165401 B CN 114165401B CN 202111514012 A CN202111514012 A CN 202111514012A CN 114165401 B CN114165401 B CN 114165401B
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- Prior art keywords
- plunger pump
- cylinder body
- axial plunger
- electromagnetic
- permanent magnet
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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
- 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
- F04B1/22—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 having two or more sets of cylinders or pistons
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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
- 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
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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
- 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
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
Abstract
An electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly comprises a cylinder sleeve, a stator disc, an annular permanent magnet and an electromagnetic coil; the cylinder sleeve is arranged on the periphery of the cylinder body of the axial plunger pump and fixedly connected with the cylinder body, so that the cylinder sleeve synchronously rotates along with the cylinder body; the annular permanent magnet is embedded into the end face, close to the swash plate, of the cylinder sleeve; the stator disc is arranged on the opposite surface of the annular permanent magnet and corresponds to the oil discharge high-pressure area of the thrust plate; the electromagnetic coil is arranged on the stator disc and corresponds to the annular permanent magnet so as to generate axial electromagnetic repulsion. The overturning moment generated by oil discharge in a high-pressure area of the valve plate is compensated through electromagnetic repulsion, and the current in the electromagnetic coil is adjusted according to external parameters such as load, rotating speed, working conditions and the like, so that the size of the compensation moment is changed, the self-adaptive compensation of the position and posture of the cylinder body is realized, the dynamic stability of the cylinder body in high-speed rotation is enhanced, the working performance of the axial plunger pump is improved, and the service life of the axial plunger pump is prolonged.
Description
Technical Field
The invention relates to the field of axial plunger pumps, in particular to an electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly.
Background
The swash plate type axial plunger pump is a variable pump with high pressure, high speed, impact resistance and higher volumetric efficiency, and is widely applied to the fields of engineering machinery, ocean engineering, aerospace and the like. With the rapid development of modern mechanical industry, higher requirements are put on the working performance, service life and stability of the hydraulic pump, so that the development of a high-performance hydraulic pump is of great significance.
In the swash plate type axial plunger pump, a cylinder body is generally in splined connection with a pump shaft and drives the cylinder body to rotate, so that plungers uniformly distributed in the cylinder body rotate around the axis of the pump shaft and do reciprocating motion relative to the cylinder body, the cylinder body and a port plate rotate relatively, and the process of sucking and pressing oil is realized by tangency and coverage of a waist-shaped opening of the cylinder body and the waist-shaped opening of the port plate. The cylinder body is used as one of core components in a rotor system of the axial plunger pump, the stress of the cylinder body is complex, in the oil suction and oil discharge process of the cylinder body and a port plate, one side of the cylinder body is always high in pressure, the other side of the cylinder body is always low in pressure, certain overturning moment exists in the cylinder body, and large unbalance loading exists in a shaft component, so that the friction and abrasion of the axial plunger pump are aggravated, the noise and the leakage amount are increased, and the working performance and the service life of the axial plunger pump are further reduced.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly, wherein an annular permanent magnet is embedded into the side surface of a cylinder sleeve to serve as a rotor, a semicircular stator disc is connected with a shell and is opposite to an oil discharge high-voltage area of a port plate on the other side of a cylinder body, a magnetic field is generated after a winding coil is wound on a winding post of the semicircular stator disc and is mutually exclusive with the magnetic field of the annular permanent magnet of the rotor, the overturning moment of an oil discharge high-voltage area of the port plate is compensated, an electromagnetic coil of the semicircular stator disc is led out through a terminal to be connected with an external power supply, a controller, an amplifier and other devices, and the magnitude of current in the electromagnetic coil is adjusted according to external parameters such as load, rotating speed, working conditions and the like, so that the magnitude of the compensation torque is changed, and the pose self-adaptive compensation of the cylinder body is realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly comprises a cylinder sleeve, a stator disc, an annular permanent magnet and an electromagnetic coil; the cylinder sleeve is arranged on the periphery of the cylinder body of the axial plunger pump and fixedly connected with the cylinder body, so that the cylinder sleeve synchronously rotates along with the cylinder body; the annular permanent magnet is embedded into the end face, close to the swash plate, of the cylinder sleeve; the stator disc is arranged on the opposite surface of the annular permanent magnet and corresponds to the oil discharge high-pressure area of the port plate; the electromagnetic coil is arranged on the stator disc and corresponds to the annular permanent magnet so as to generate axial electromagnetic repulsion.
And the outer side of the electromagnetic coil is covered with a magnetic isolation material, and only a magnetic field in the opposite direction of the electromagnetic coil and the annular permanent magnet is reserved.
And a magnetic isolation material is arranged between the contact surfaces of the annular permanent magnet and the cylinder sleeve, so that the annular permanent magnet generates electromagnetic repulsion only on the side surface opposite to the stator disc.
And winding posts are arranged on the stator disc, and the electromagnetic coil is wound on the winding posts.
The winding posts are provided with a plurality of winding posts, and the directions of the electromagnetic coils wound on the winding posts are consistent.
The plurality of winding posts are uniformly distributed.
The stator disc is semicircular.
The stator disc is fixedly connected with a shell of the axial plunger pump.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the invention discloses an electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly, wherein an annular permanent magnet is embedded into the side surface of a cylinder sleeve outside a cylinder body to serve as a rotor, a semicircular stator disc is machined on the outer side of the rotor and fixedly connected with a shell, an electromagnetic coil is wound on a winding post of the semicircular stator disc, a magnetic field generated after the electromagnetic coil is electrified is the same as the polarity of a similar annular electromagnet, electromagnetic repulsion force is generated, the torque of the cylinder body is compensated for overturning torque generated by oil discharge of a high-pressure area of a distribution disc on the other side of the cylinder body through the electromagnetic repulsion force, the electromagnetic coil is led out through a terminal and is connected with an external power supply, a controller, an amplifier and other devices, the current in the electromagnetic coil is adjusted according to external parameters such as load, rotating speed, working conditions and the like, so that the compensation torque is changed, and the pose self-adaptive compensation of the cylinder body is realized. Compared with the prior art, if a cylinder sleeve is processed outside a cylinder body, the cylinder body is clamped in a radial motion mode through a mechanical bearing or the overturning moment is overcome in other modes, electromagnetic repulsion force generated through a magnetic bearing is used for compensating the overturning moment of the cylinder body, additional pressure load is basically not added to structural parts of the axial plunger pump, the phenomenon of contact fatigue and even crushing failure of the surfaces of the mechanical parts is reduced, the dynamic stability of the cylinder body during high-speed rotation is enhanced, the working performance of the axial plunger pump is improved, and therefore the service life of the axial plunger pump is prolonged.
According to the invention, the electromagnetic coil is added on the side, close to the swash plate, of the cylinder body, the overturning moment of the cylinder body under different working conditions is compensated by changing the current in the stator coil, and therefore, the electromagnetic repulsion is actively controlled through structural design to compensate the overturning moment of the cylinder body, the dynamic performance of the cylinder body is improved, and the hydraulic cylinder has the advantages of clear structure and good economical efficiency. In addition, this structure still has extensive applicability's characteristics, can choose annular electromagnet, semicircle stator disc and the solenoid of different sizes and shape for use to the operating mode of difference to guarantee that the cylinder body subassembly has excellent working property.
Drawings
FIG. 1 is a side view schematic of a cylinder assembly;
FIG. 2 is a perspective view of the cylinder assembly;
FIG. 3 is a schematic front view of the cylinder assembly;
FIG. 4 is a schematic cross-sectional view B-B of the cylinder assembly;
FIG. 5 is a schematic top view of a semi-circular stator plate;
FIG. 6 is a schematic perspective view of a semicircular stator plate;
FIG. 7 is a schematic view of the structure of the solenoid;
fig. 8 is a working principle diagram of a semicircular stator plate.
Reference numerals: the cylinder comprises a cylinder body 1, a cylinder sleeve 2, an annular permanent magnet 3, a semicircular stator disc 4, a valve plate 5, a winding post 6 and an electromagnetic coil 7.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 7, the embodiment provides an electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder assembly, which includes a cylinder sleeve 2, a semicircular stator disc 4, an annular permanent magnet 3, and an electromagnetic coil 7.
The cylinder sleeve 2 is processed on the outer side of the cylinder body 1 of the axial plunger pump, and the cylinder sleeve 2 is fixedly connected with the cylinder body 1; the cylinder sleeve 2 is close to the swash plate, and the annular permanent magnet 3 is embedded in the side surface which is perpendicular to the axial direction; the annular permanent magnet 3 serves as a rotor and synchronously rotates with the cylinder body 1;
the semicircular stator disc 4 is processed on the outer side of the annular permanent magnet 3, and the semicircular stator disc 4 is fixedly connected with a shell of the axial plunger pump to serve as a stator; the semicircular stator disc 4 is opposite to an oil discharge high-pressure area of the port plate 5 on the other side of the cylinder body 1;
a plurality of winding posts 6 are uniformly distributed on the semicircular stator disc 4; the number of the winding posts 6 is adjusted according to the requirement; the cross section of the winding post 6 is not limited, and can be in the shape of arc, rectangle, ellipse, circle and the like; the distribution positions of the winding posts 6 on the semicircular stator disc 4 are opposite to the annular permanent magnet 3, the electromagnetic coil 7 is wound on the winding posts 6 and has the same winding direction, and the electromagnetic coil 7 is led out through a terminal and is connected with the outside; the magnetic field generated after the electromagnetic coil 7 is electrified is the same as the magnetism of one side close to the annular permanent magnet 3, and electromagnetic repulsion is generated.
And the outer side of the electromagnetic coil 7 is covered with a magnetic isolation material, and only the magnetic field in the opposite direction of the electromagnetic coil 7 and the annular permanent magnet 3 is reserved.
And a magnetism isolating material is arranged between the contact surfaces of the annular permanent magnet 3 and the cylinder sleeve 2, so that the annular permanent magnet 3 only generates electromagnetic repulsion on the side surface opposite to the semicircular stator disc 4.
In this embodiment, the stator disc is semicircular, and may be circular or other shapes.
The working principle of the invention is as follows:
as shown in fig. 8, the controller mainly converts the detected external parameters such as pressure, rotation speed, flow rate, etc. into control signals, and converts the control signals into increasing/decreasing signals of the current in the solenoid coil 7 through the power amplifier, and when the external parameters such as pressure, rotation speed, flow rate, etc. increase, the corresponding control increases the current in the solenoid coil 7, and conversely, when the external parameters such as pressure, rotation speed, flow rate, etc. decrease, the corresponding control decreases the current in the solenoid coil 7. Therefore, the size of magnetic repulsion between the annular permanent magnet 3 embedded in the cylinder sleeve 2 and the semicircular stator plate 4 is controlled, the current is increased/decreased, the magnetic repulsion is increased/decreased, and the compensation torque for a high-pressure area of the valve plate 5 is increased/decreased.
The invention relates to a self-adaptive compensation device of a cylinder body, which is characterized in that an annular permanent magnet is embedded into the side surface of a cylinder sleeve outside a cylinder body to serve as a rotor, a semicircular stator disc is processed on the outer side of the rotor to be fixedly connected with a shell, an electromagnetic coil is wound on a winding post of the semicircular stator disc, a magnetic field generated after the electromagnetic coil is electrified is the same as the polarity of a similar annular electromagnet, electromagnetic repulsion force is generated, the torque of the cylinder body is compensated for the overturning torque generated by oil discharge of a high-pressure area of a valve plate on the other side of the cylinder body through the electromagnetic repulsion force, the electromagnetic coil is led out through a terminal to be connected with an external power supply, a controller, an amplifier and other devices, the magnitude of current in the electromagnetic coil is adjusted according to external parameters such as load, rotating speed, working condition and the like, so that the magnitude of the compensation torque is changed, and the self-adaptive compensation of the pose of the cylinder body is realized. The axial plunger pump basically has no additional pressure load to structural parts of the axial plunger pump, reduces the phenomenon of surface contact fatigue and even crushing failure of mechanical parts, enhances the dynamic stability of a cylinder body during high-speed rotation, improves the working performance of the axial plunger pump, and prolongs the service life of the axial plunger pump.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims.
Claims (8)
1. The utility model provides an axial plunger pump cylinder body subassembly of adjustable position appearance self-adaptation compensation of electromagnetic moment which characterized in that: the device comprises a cylinder sleeve, a stator disc, an annular permanent magnet and an electromagnetic coil; the cylinder sleeve is arranged on the periphery of the cylinder body of the axial plunger pump and fixedly connected with the cylinder body, so that the cylinder sleeve synchronously rotates along with the cylinder body; the annular permanent magnet is embedded into the end face, close to the swash plate, of the cylinder sleeve; the stator disc is arranged on the opposite surface of the annular permanent magnet and corresponds to the oil discharge high-pressure area of the port plate; the electromagnetic coil is arranged on the stator disc and corresponds to the annular permanent magnet so as to generate axial electromagnetic repulsion.
2. The electromagnetic torque pose-adjustable adaptive compensation axial plunger pump cylinder assembly of claim 1, wherein: and the outer side of the electromagnetic coil is covered with a magnetic isolation material, and only a magnetic field in the opposite direction of the electromagnetic coil and the annular permanent magnet is reserved.
3. The electromagnetic torque pose-adjustable adaptive compensation axial plunger pump cylinder assembly of claim 1, wherein: and a magnetic isolation material is arranged between the contact surfaces of the annular permanent magnet and the cylinder sleeve, so that the annular permanent magnet generates electromagnetic repulsion only on the side surface opposite to the stator disc.
4. The electromagnetic torque pose-adjustable adaptive compensation axial plunger pump cylinder assembly of claim 1, wherein: and the stator disc is provided with a winding post, and the electromagnetic coil is wound on the winding post.
5. The electromagnetic torque pose-adjustable adaptive compensation axial plunger pump cylinder assembly according to claim 4, wherein: the wrapping posts are multiple, and the directions of the electromagnetic coils wound on the wrapping posts are consistent.
6. The electromagnetic torque pose-adjustable adaptive compensation axial plunger pump cylinder assembly according to claim 5, wherein: the plurality of winding posts are uniformly distributed.
7. The electromagnetic torque pose-adjustable adaptive compensation axial plunger pump cylinder assembly of claim 1, wherein: the stator disc is semicircular.
8. The electromagnetic torque pose-adjustable adaptive compensation axial plunger pump cylinder assembly of claim 1, wherein: the stator disc is fixedly connected with a shell of the axial plunger pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514012.2A CN114165401B (en) | 2021-12-10 | 2021-12-10 | Electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514012.2A CN114165401B (en) | 2021-12-10 | 2021-12-10 | Electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114165401A CN114165401A (en) | 2022-03-11 |
| CN114165401B true CN114165401B (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111514012.2A Active CN114165401B (en) | 2021-12-10 | 2021-12-10 | Electromagnetic torque adjustable pose self-adaptive compensation axial plunger pump cylinder body assembly |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003232277A (en) * | 2002-02-12 | 2003-08-22 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Power source for construction machine |
| CN100363614C (en) * | 2005-10-28 | 2008-01-23 | 兰州理工大学 | Oil film thickness controlling system for end fluid-distributing axial plunger pump |
| CN103696956B (en) * | 2013-12-06 | 2016-04-06 | 北京工业大学 | A kind of water hydraulic axial piston pump Port Plate Pair of equalising torque |
| CN107725301B (en) * | 2017-11-10 | 2023-07-25 | 安徽理工大学 | Axial plunger pump and magnetic sliding shoe pair for motor and control method |
| CN113738640B (en) * | 2021-09-02 | 2022-04-19 | 厦门大学 | Controllable electromagnetic composite supporting axial plunger pump swash plate-piston shoe assembly |
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2021
- 2021-12-10 CN CN202111514012.2A patent/CN114165401B/en active Active
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| CN114165401A (en) | 2022-03-11 |
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