CN110657077A - Gear-meshing type flow distribution device - Google Patents
Gear-meshing type flow distribution device Download PDFInfo
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- CN110657077A CN110657077A CN201911013156.2A CN201911013156A CN110657077A CN 110657077 A CN110657077 A CN 110657077A CN 201911013156 A CN201911013156 A CN 201911013156A CN 110657077 A CN110657077 A CN 110657077A
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- gear
- plunger
- flow distribution
- hole
- sliding shoe
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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
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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
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
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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
- F04B1/128—Driving means
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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
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention discloses a gear-meshing type flow distribution device which comprises a first gear, a second gear, a plunger, an elastic component, a flow distribution disc and a sliding shoe, wherein annular internal teeth are arranged on the first gear, annular external teeth, a cylinder plunger hole and an oil through hole are arranged on the second gear, the external teeth of the second gear are eccentrically meshed with the internal teeth of the first gear, one end of the plunger is connected with one side of the sliding shoe, the other side of the sliding shoe is attached to the inner surface of the first gear, a rod body at the other end of the plunger is telescopically arranged in the plunger hole of a second gear cylinder through the elastic component, and the flow distribution disc is arranged on the end surface of a plug hole outlet of a second gear cylinder to form a flow distribution channel. The gear is adopted to provide power for the second gear, the plunger is driven to suck and discharge oil through the meshing rotation of the gear, the sliding speed of the sliding shoe relative to the inner surface of the first gear is small and mainly depends on the relative rotation linear speed of the first gear and the second gear, and the rotating speed of the plunger pump can be higher when the sliding shoe is made of the same material, namely the allowable PV value is unchanged.
Description
Technical Field
The invention relates to the technical field of plunger pumps, in particular to a gear-meshing type flow distribution device.
Background
The pump is widely used in hydraulic systems with various functions as a heart of the hydraulic system, and the plunger pump has characteristics of high rated pressure, high rotation speed, large driving power and the like, and has been developed greatly in recent years. The plunger pump mainly works by utilizing the volume change generated by the reciprocating motion of the plunger parallel to the transmission shaft in the plunger hole, and the plunger hole are round parts, so that the plunger pump can achieve high matching precision, has the advantages of high volume efficiency, stable operation, good flow uniformity, low noise and the like, is easy to integrate and reliable to operate, and is more and more applied in the fields of aerospace and engineering machinery.
However, for the conventional plunger pump, if the relatively high rotation speed and pressure are to be achieved, the limitation of the key friction pair PV value of the plunger pump is imposed, for example, the friction pair of the slipper and the swash plate bears the high rotation speed, which puts higher requirements on materials, and also restricts the increase of the output pressure of the plunger pump, for example, when the plunger pump in the conventional patent nos. CN104948408A and CN105508166A is in a stationary state, the relative rotation speed is very high, the limit value of the key friction pair PV value is easily reached, and the performance improvement of the plunger pump is limited.
Therefore, how to increase the rotation speed of the plunger pump is an urgent technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a gear mesh type flow distribution device, which can increase the rotating speed of a plunger pump under the condition of the PV value of a slipper made of the same material.
In order to solve the technical problem, the invention provides a gear-meshing type flow distribution device which comprises a first gear, a second gear, a plunger, an elastic component, a flow distribution disc and a sliding shoe, wherein annular internal teeth are arranged on the first gear, annular external teeth, a cylinder plunger hole and an oil through hole are arranged on the second gear, the external teeth of the second gear are eccentrically meshed with the internal teeth of the first gear, one end of the plunger is arranged on the inner surface of the first gear, the elastic component is arranged at the other end of the plunger, a rod body at the other end of the plunger is telescopically arranged in the cylinder plunger hole of the second gear, and the flow distribution disc is arranged on the end surface of an outlet of the cylinder plunger hole of the second gear and is communicated with the plunger hole.
Preferably, one end of the plunger is provided with a slipper which is rotatably provided on the inner surface of the first gear.
Preferably, said shoes are circumferentially distributed along said first gear inner surface.
Preferably, the first gear is of a circular ring-shaped structure, the annular internal teeth are arranged on one side of the inner surface of the first gear, the other side of the inner surface of the first gear is a smooth cylindrical surface, and the spherical grooves are circumferentially distributed along the smooth cylindrical surface.
Preferably, the second gear is a cylindrical structure, the annular external teeth are arranged on one side of the outer surface of the second gear, and the other side of the outer surface of the second gear is a smooth cylindrical surface.
Preferably, a through hole is formed in the optical axis, a key groove is formed in the surface of the through hole, and an oil duct communicated with the plunger hole is further formed in the end face of the optical axis.
Preferably, two mutually symmetrical kidney-shaped grooves are formed in the end face of the valve plate, and an inlet and an outlet of the plunger pump are formed in the middle of each kidney-shaped groove.
The invention provides a gear-meshing type flow distribution device which mainly comprises a first gear, a second gear, a plunger, an elastic component, a flow distribution disc and a sliding shoe, wherein annular internal teeth are arranged on the first gear, annular external teeth, a cylinder plunger hole and an oil through hole are arranged on the second gear, the external teeth of the second gear are eccentrically meshed with the internal teeth of the first gear, one end of the plunger is connected with one side of the sliding shoe, the other side of the sliding shoe is attached to the inner surface of the first gear, the elastic component is arranged at the other end of the plunger, a rod body at the other end of the plunger is telescopically arranged in the plunger hole of a second gear cylinder, and the flow distribution disc is arranged on the end surface of a plug hole outlet of a second gear cylinder plunger hole to. The invention adopts the gear to provide power for the second gear, drives the oil absorption and oil discharge processes of the plunger through the relative motion generated by the gear meshing, has small sliding speed relative to the inner surface of the first gear and mainly depends on the relative rotation linear speed of the meshing of the first gear and the second gear, so that the rotating speed of the plunger pump can be higher when the same material is used for the sliding shoe, namely the allowable PV value is not changed. Namely, under the condition that the sliding shoes are meshed with the gears, when the absolute movement speed of the sliding shoes is high, the relative movement stroke of the sliding shoes and the friction pairs of the inner surfaces of the first gears is short, the relative movement speed of the sliding shoes is low, and the surface wear degree of the sliding shoes is effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of the overall structure shown in FIG. 1;
FIG. 3 is a schematic view of the first gear arrangement shown in FIG. 1;
FIG. 4 is a schematic view of a second gear structure shown in FIG. 1;
FIG. 5 is a cross-sectional view of the structure shown in FIG. 4;
fig. 6 is a schematic structural view of the port plate shown in fig. 1.
Wherein, in fig. 1-6:
the gear-type hydraulic oil cylinder comprises a first gear-1, a second gear-2, a plunger-3, an elastic component-4, a valve plate-5 and a sliding shoe-6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention; fig. 2 is a partial cross-sectional view of the overall structure shown in fig. 1.
In a specific embodiment provided by the invention, the gear-meshing type flow distribution device mainly comprises a first gear 1, a second gear 2, a plunger 3, an elastic component 4, a flow distribution plate 5 and a sliding shoe 6, wherein annular internal teeth are arranged on the first gear 1, annular external teeth and cylinder plunger holes distributed annularly are arranged on the second gear 2, the external teeth of the second gear 2 are meshed with the internal teeth of the first gear 1, one end of the plunger 3 is connected with one side of the sliding shoe 6, the other side of the sliding shoe 6 is attached to the inner surface of the first gear 1, the elastic component 4 is arranged at the other end of the plunger 3, a rod body at the other end of the plunger 3 is telescopically arranged in the cylinder plunger hole at the periphery of the second gear 2, and the flow distribution plate 5 is arranged on the outlet end face of the cylinder plunger hole of the second gear 2 and communicated with the cylinder plunger hole.
The first gear 1 is provided with annular internal teeth, the second gear 2 is provided with annular external teeth, the external teeth of the second gear 2 are meshed with the internal teeth of the first gear 1, the second gear 2 is used for being connected with an external power device and providing power for the plunger pump to move along a rotating line of the piston shoes 6, so that the piston shoes 6 rotate along the inner surface of the first gear 1 in a fitting manner, and the first gear 1 and the second gear 2 perform eccentric meshing movement to drive the plunger 3 to reciprocate to form oil absorption and discharge so as to provide hydraulic power; one end of the plunger 3 is arranged on the inner surface of the first gear 1, the other end of the plunger 3 is provided with an elastic component 4, the other end rod body of the plunger 3 is telescopically arranged in a plunger hole at the periphery of the second gear 2, and the valve plate 5 is arranged on the second gear 2 and communicated with the second gear 2.
Specifically, in the actual operation process, the power device drives the second gear 2 to rotate, the first gear 1 and the second gear 2 are meshed with each other, so as to drive the first gear 1 to rotate, because one end of the plunger 3 is arranged on the inner surface of the first gear 1 and the rod body at the other end of the plunger 3 is telescopically arranged in the plunger hole at the periphery of the second gear 2, when the first gear 1 rotates anticlockwise, the plunger 3 starts to move axially in the plunger hole, the plunger 3 at the left side of the valve plate 5 moves towards the outside of the plunger hole, the plunger hole and the containing cavity in the plunger 3 are enlarged, at the moment, the left side valve hole in the valve plate 5 sucks oil from the outside and enters the containing cavity, when the first gear 1 rotates clockwise, the plunger 3 at the right side of the valve plate 5 moves towards the inside of the plunger hole, the plunger hole and the containing cavity in the plunger 3 are reduced, at the moment, the right side valve hole in the valve plate 5 discharges oil, the plunger 3 continuously performs oil absorption and oil discharge processes in the moving process, so that the mechanical energy is converted into hydraulic energy.
In order to optimize the advantages of the gear-mesh type flow distribution device in the above embodiment that hydraulic power can be supplied more quickly and that more hydraulic power can be increased, the piston 3 is provided with a sliding shoe 6 at one end, the sliding shoe 6 is attached to the inner surface of the first gear 1 and rotates along with the second gear 2, and the sliding shoe 6 drives the piston 3. The oil sucking and discharging process of the plunger 3 is pushed through the relative motion generated by the first gear 1 and the second gear 2, the sliding speed of the friction pair of the sliding shoe 6 is mainly determined by the relative speed of the first gear 1 and the second gear 2, when the second gear 2 rotates, the sliding shoe 6 transmits power to the plunger 3 and drives the plunger 3 to stretch and retract along the radial direction of the second gear 2, when the sliding shoe 6 is made of the same material, namely the allowable PV value is not changed, the rotating speed of the plunger pump can be higher, and in addition, under the condition of gear meshing, the circumferential displacement of the sliding shoe 6 on the second gear 2 is reduced, namely the relative sliding stroke of the sliding shoe 6 is shortened.
Wherein, the number of the sliding shoes 6 is odd; the shoes 6 are circumferentially distributed along the inner surface of the first gear wheel 1. When the sliding shoes 6 are circumferentially and uniformly distributed on the inner surface of the first gear 1, the fluctuation of output hydraulic pressure can be effectively reduced.
Referring to fig. 3, fig. 3 is a schematic view of the first gear structure shown in fig. 1.
Wherein, first gear 1 is the ring structure, and cyclic annular internal tooth sets up in one side of first gear 1 internal surface, and the external tooth of second gear 2 and the cyclic annular internal tooth meshing of first gear 1, and the opposite side of first gear 1 internal surface is smooth cylinder face, and piston shoe 6 can laminate on smooth cylinder face.
Referring to fig. 4, 5 and 6, fig. 4 is a schematic view of a second gear structure shown in fig. 1; FIG. 5 is a cross-sectional view of the structure shown in FIG. 4; fig. 6 is a schematic structural view of the port plate shown in fig. 1.
Wherein, second gear 2 is cylindric structure, and cyclic annular external tooth sets up in one side of second gear 2 surface, and the opposite side of second gear 2 surface is the optical axis, and the plunger hole distributes along optical axis circumference, and plunger 3 sets up in the plunger hole through elasticity subassembly 4 telescopically, and the gear part of first gear 1 and the gear part intermeshing of second gear 2.
Further, the inside of optical axis is provided with the through-hole, is equipped with the keyway on the through-hole surface, and the keyway supplies to connect shaft coupling or power device and is connected with second gear 2, and still sets up the oil duct with the plunger hole intercommunication on the terminal surface of optical axis. Meanwhile, two mutually symmetrical kidney-shaped grooves are formed in the end face of the valve plate 5, two mutually symmetrical through holes are formed in the middle of each kidney-shaped groove, and the kidney-shaped grooves communicate the oil distribution channels.
Further, the elastic component 4 is a spring, and both ends of the spring are ground flat. The spring is arranged in the plunger hole and is mutually matched with the second gear 2 and the plunger 3, when the plunger 3 moves, the plunger 3 provides proper resilience force for the plunger, so that the plunger 3 firmly clings the sliding shoes 6 to the inner surface of the first gear 1, the plunger 3 is ensured to realize reciprocating motion, hydraulic oil is fed and discharged, and the realizability of the scheme is ensured.
In summary, the gear-meshing type flow distribution device provided in this embodiment mainly includes a first gear, a second gear, a plunger, an elastic component, a flow distribution disc and a sliding shoe, wherein annular internal teeth are provided on the first gear, annular external teeth, a cylinder plunger hole and an oil through hole are provided on the second gear, the external teeth of the second gear are eccentrically meshed with the internal teeth of the first gear, one end of the plunger is connected with one side of the sliding shoe, the other side of the sliding shoe is attached to the inner surface of the first gear, the elastic component is installed at the other end of the plunger, a rod body at the other end of the plunger is telescopically arranged in the plunger hole of the second gear cylinder, and the flow distribution disc is arranged on the outlet end face of the second gear cylinder plunger hole, so as. The invention adopts the gear to provide power for the second gear, drives the oil absorption and oil discharge processes of the plunger through the relative motion generated by the gear meshing, has small sliding speed relative to the inner surface of the first gear and mainly depends on the relative rotation linear speed of the first gear and the second gear, so that the rotating speed of the plunger pump can be higher when the same material, namely the allowable PV value is not changed, is used for the sliding shoe. Namely, under the condition that the sliding shoes are meshed with the gears, when the absolute movement speed of the sliding shoes is high, the relative movement stroke of the sliding shoes and the friction pairs of the inner surfaces of the first gears is short, the relative movement speed of the sliding shoes is low, and the surface wear degree of the sliding shoes is effectively reduced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The gear-meshing type flow distribution device is characterized by comprising a first gear (1), a second gear (2), a plunger (3), an elastic component (4), a flow distribution disc (5) and a sliding shoe (6), wherein annular internal teeth are arranged on the first gear (1), annular external teeth, a cylinder plunger hole and an oil through hole are arranged on the second gear (2), the external teeth of the second gear (2) are eccentrically meshed with the internal teeth of the first gear (1), one side of the sliding shoe (6) is connected with one end of the plunger (3), the other side of the sliding shoe (6) is attached to the inner surface of the first gear (1), the elastic component (4) is arranged at the other end of the plunger (3), a rod body at the other end of the plunger (3) is telescopically arranged in the cylinder plunger hole of the second gear (2), the flow distribution disc (5) is arranged on the outlet end face of the cylinder plunger hole of the second gear (2) and is connected with the cylinder plunger hole of the second gear (2) The method is simple.
2. Gear-mesh type distribution device according to claim 1, characterized in that said shoes (6) are circumferentially distributed along the inner surface of said first gear (1).
3. The gear-mesh type flow distribution device according to claim 2, wherein the first gear (1) is of an annular structure, and the annular internal teeth are arranged on one side of the inner surface of the first gear (1), and the other side of the inner surface of the first gear (1) is a smooth cylindrical surface.
4. The gear mesh type flow distribution device according to claim 3, wherein the second gear (2) is of a cylindrical structure, the annular external teeth are arranged on one side of the outer surface of the second gear (2), the other side of the outer surface of the second gear (2) is an optical axis, and the plunger holes are distributed along the circumferential direction of the optical axis.
5. The gear-meshing type flow distribution device according to claim 4, wherein a through hole is formed in the optical shaft, a key groove is formed in the surface of the through hole, and an oil passage communicated with the plunger hole is further formed in the end face of the optical shaft.
6. The gear-mesh type flow distribution device according to claim 5, wherein the end surface of the flow distribution plate (5) is provided with two mutually symmetrical kidney-shaped grooves, and the middle of the kidney-shaped grooves is provided with an inlet and an outlet of the plunger pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013156.2A CN110657077B (en) | 2019-10-23 | 2019-10-23 | Gear-meshing type flow distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013156.2A CN110657077B (en) | 2019-10-23 | 2019-10-23 | Gear-meshing type flow distribution device |
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| Publication Number | Publication Date |
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| CN110657077A true CN110657077A (en) | 2020-01-07 |
| CN110657077B CN110657077B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911013156.2A Active CN110657077B (en) | 2019-10-23 | 2019-10-23 | Gear-meshing type flow distribution device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0956908A1 (en) * | 1998-05-15 | 1999-11-17 | Wilhelm A. Keller | Electrically driven dispensing apparatus for cartridges |
| CN108644083A (en) * | 2018-05-17 | 2018-10-12 | 燕山大学 | A kind of ultrahigh pressure axial plunger pump of two-stage pressure output |
| CN109281883A (en) * | 2018-11-08 | 2019-01-29 | 浙江大学 | A kind of electro-hydraulic executive device of harmonic wave step-by-step movement using rotation oil distributing valve |
| CN109441708A (en) * | 2018-12-19 | 2019-03-08 | 安徽理工大学 | A kind of inner curve radial plunger piston motor based on Gear Planet Transmission |
| CN109630348A (en) * | 2019-01-08 | 2019-04-16 | 浙江大学 | A kind of step-by-step movement sliding-vane motor suitable for low-speed heave-load |
| CN110630465A (en) * | 2019-09-29 | 2019-12-31 | 符鹏 | Plunger pump |
-
2019
- 2019-10-23 CN CN201911013156.2A patent/CN110657077B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0956908A1 (en) * | 1998-05-15 | 1999-11-17 | Wilhelm A. Keller | Electrically driven dispensing apparatus for cartridges |
| CN108644083A (en) * | 2018-05-17 | 2018-10-12 | 燕山大学 | A kind of ultrahigh pressure axial plunger pump of two-stage pressure output |
| CN109281883A (en) * | 2018-11-08 | 2019-01-29 | 浙江大学 | A kind of electro-hydraulic executive device of harmonic wave step-by-step movement using rotation oil distributing valve |
| CN109441708A (en) * | 2018-12-19 | 2019-03-08 | 安徽理工大学 | A kind of inner curve radial plunger piston motor based on Gear Planet Transmission |
| CN109630348A (en) * | 2019-01-08 | 2019-04-16 | 浙江大学 | A kind of step-by-step movement sliding-vane motor suitable for low-speed heave-load |
| CN110630465A (en) * | 2019-09-29 | 2019-12-31 | 符鹏 | Plunger pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN110657077B (en) | 2021-08-06 |
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