CN110285105B - Integrated power unit with oil pump embedded in valve block - Google Patents
Integrated power unit with oil pump embedded in valve block Download PDFInfo
- Publication number
- CN110285105B CN110285105B CN201910606844.3A CN201910606844A CN110285105B CN 110285105 B CN110285105 B CN 110285105B CN 201910606844 A CN201910606844 A CN 201910606844A CN 110285105 B CN110285105 B CN 110285105B
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- valve block
- flow distribution
- embedded
- pump
- oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention belongs to the technical field of hydraulic power devices, and particularly relates to an integrated power unit with an oil pump embedded in a valve block. An embedded pump groove is formed in the middle of the inner side of the valve block, an inner gear ring is movably mounted in the embedded pump groove, and an outer gear shaft is meshed in the inner gear ring; the front end and the rear end of the inner gear ring are provided with a flow distribution piece A and a flow distribution piece B, the flow distribution piece A and the flow distribution piece B are connected through a semicircular pin, and an outer gear shaft and a crescent plate are limited and fixed in the inner gear ring; the outer sides of the flow distribution sheet A and the flow distribution sheet B are respectively provided with a rear cover sealing assembly and a front cover sealing assembly; the internal engagement oil pump is integrally fixed inside the embedded pump groove in a sealing manner through the rear cover; the front end cover and the shell of the existing pump product are eliminated, the material and manufacturing cost is effectively reduced, and only the sealing element and the pump rear cover are reserved outside the functional valve block, so that the installation volume is greatly reduced; this is particularly true for equipment that is compact in space and requires low noise.
Description
Technical Field
The invention belongs to the technical field of hydraulic power devices, and particularly relates to an integrated power unit with an oil pump embedded in a valve block
Background
And the hydraulic power unit is connected with the plurality of hydraulic oil cylinders through an external pipeline system to control the action of the plurality of groups of valves. The oil tank, the oil pump and the energy accumulator form an independent closed power oil source system. Under the normal state, the oil pump supplies oil to the system, the rated pressure of the system is automatically kept, and the position keeping function of the valve at any position is realized by locking the control valve; under the working state, the hydraulic actuator is controlled by the electromagnetic valve, a system command signal enables the electromagnetic valve to act, the oil pressure and the energy release of the energy accumulator are controlled, the oil cylinder slide valve is further controlled, the valve is driven by the mechanical transmission mechanism, and quick closing, normal opening and closing and test control are implemented.
However, the existing products are all external tooth meshing gear pumps as shown in figure 5, the noise is high, the self-absorption capacity is poor, and the pump body assembly which is assembled is independently installed, so that the occupied space is large, the working procedure is complex, and the cost is high.
Disclosure of Invention
The invention aims to provide an oil circuit block internal meshing oil pump integrated power unit which is simple in structure, reasonable in design and convenient to use, and aims to overcome the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the pump comprises a driving motor, a bearing assembly, a connecting bolt, a connecting disc, a valve block, an embedded pump groove, an inner gear ring, an outer gear shaft, a crescent plate, a flow distribution plate A, a rear cover sealing assembly, a flow distribution plate B, a front cover sealing assembly, a semicircular pin and a rear cover; the connecting disc is fixed on the outer surface of the valve block through four groups of connecting bolts; an embedded pump groove is formed in the middle of the inner side of the valve block, an inner gear ring is movably mounted inside the embedded pump groove, an outer gear shaft is meshed inside the inner gear ring, and a crescent plate is arranged in a cavity between the inner gear ring and the outer gear shaft; the front end and the rear end of the inner gear ring are provided with a flow distribution piece A and a flow distribution piece B, the flow distribution piece A and the flow distribution piece B are connected through a semicircular pin, and an outer gear shaft and a crescent plate are limited and fixed in the inner gear ring; the outer sides of the flow distribution sheet A and the flow distribution sheet B are respectively provided with a rear cover sealing assembly and a front cover sealing assembly; the internal engagement oil pump is integrally fixed inside the embedded pump groove in a sealing manner through the rear cover; the front end of the outer gear shaft penetrates through the valve block and is connected with a transmission shaft of a driving motor fixed on the outer side of the connecting disc through a bearing assembly.
Preferably, the bearing assembly consists of a shaft connecting piece, a retainer ring, a framework oil seal and a composite bearing; the composite bearing is embedded in a reserved hole groove in the middle of the connecting disc, and the outer side of the composite bearing is sealed through a framework oil seal; the shaft connecting piece is inserted in the clamping groove of the output shaft of the driving motor and is fixed through the check ring.
Preferably, the upper end of the external gear shaft is of a convex structure, penetrates through the middle hole groove of the valve block, and is inserted into the composite bearing in the middle of the connecting disc to be connected with the lower end of the shaft connecting piece in an inserting mode.
Preferably, the four walls of the outer side of the valve block are screwed with an electromagnetic valve, a one-way valve, an overflow valve and a plastic plug screw; the lower surface of the valve block is screwed with a pressure compensation valve and an oil suction pipe, and the lower end of the oil suction pipe is screwed with a filter screen.
Preferably, four corners of the lower surface of the valve block are hermetically fixed with an oil tank through bolts, and one side of the oil tank is screwed with an oil tank cover.
Preferably, the check valve, the overflow valve, the pressure compensation valve and the oil suction pipe connected to the outside of the valve block are all connected with the internal oil path through the valve block.
Preferably, the output shaft of the drive motor and the external gear shaft are held on the same axis.
Preferably, the crescent plate is formed by combining two crescent blocks, and two sides of the crescent plate are fixed between the flow distribution plate A and the flow distribution plate B through a micro pin shaft.
Preferably, the rear cover sealing assembly comprises a rear cover sealing ring and a rear cover sealing retainer ring; the front cover sealing assembly comprises a front cover sealing ring and a front cover sealing retainer ring.
After adopting the structure, the invention has the beneficial effects that: according to the integrated power unit with the oil pump embedded in the valve block, the front end cover and the shell of the existing pump product are omitted, the material and manufacturing cost is effectively reduced, and only the sealing element and the pump rear cover are reserved outside the functional valve block, so that the installation volume is greatly reduced; by adopting an internal engagement mode, the noise of the product is 15-20 decibels lower than that of the existing pump products, and the pump is particularly suitable for equipment which has compact space and needs low noise.
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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the internal oil pump of the present invention.
Fig. 3 is a schematic view of the structure of the bearing assembly 2 of the present invention.
Fig. 4 is a schematic view of the external connection of the valve block 5 of the present invention.
FIG. 5 is a drawing of the background of the invention.
Description of reference numerals:
the device comprises a driving motor 1, a bearing assembly 2, a connecting bolt 3, a connecting disc 4, a valve block 5, an embedded pump groove 6, an inner gear ring 7, an outer gear shaft 8, a crescent plate 9, a flow distribution sheet A10, a rear cover sealing assembly 11, a flow distribution sheet B12, a front cover sealing assembly 13, a semicircular pin 14, a rear cover 15, a shaft connecting piece 16, a retainer ring 17, a framework oil seal 18, a composite bearing 19, an electromagnetic valve 20, a one-way valve 21, an overflow valve 22, a plastic screw plug 23, a pressure compensation valve 24, an oil suction pipe 25, a filter screen 26, an oil tank 27 and an oil tank cover 28.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The first embodiment is as follows: the specific implementation mode is a structural relation of an internal gear pump:
referring to fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: the pump comprises a driving motor 1, a bearing assembly 2, a connecting bolt 3, a connecting disc 4, a valve block 5, an embedded pump groove 6, an inner gear ring 7, an outer gear shaft 8, a crescent plate 9, a flow distribution plate A10, a rear cover sealing assembly 11, a flow distribution plate B12, a front cover sealing assembly 13, a semicircular pin 14 and a rear cover 15; the connecting disc 4 is fixed on the outer surface of the valve block 5 through four groups of connecting bolts 3; an embedded pump groove 6 is formed in the middle of the inner side of the valve block 5, an inner gear ring 7 is movably mounted inside the embedded pump groove 6, an outer gear shaft 8 is meshed inside the inner gear ring 7, and a crescent plate 9 is arranged in a cavity between the inner gear ring 7 and the outer gear shaft 8; the front end and the rear end of the inner gear ring 7 are provided with a flow distribution sheet A10 and a flow distribution sheet B12, the flow distribution sheet A10 and the flow distribution sheet B12 are connected through a semicircular pin 14, and the outer gear shaft 8 and the crescent plate 9 are limited and fixed in the inner gear ring 7; the outer sides of the flow distribution plate A10 and the flow distribution plate B12 are respectively provided with a rear cover sealing assembly 11 and a front cover sealing assembly 13; the rear cover sealing assembly 11 comprises a rear cover sealing ring and a rear cover sealing retainer ring; the front cover sealing assembly 13 comprises a front cover sealing ring and a front cover sealing retainer ring; the internal engagement oil pump is integrally fixed in the embedded pump groove 6 in a sealing way through the rear cover 15; the front end of the outer gear shaft 8 passes through the valve block 5 and is connected with a transmission shaft of the driving motor 1 fixed on the outer side of the connecting disc 4 through the bearing assembly 2.
The working principle of the specific embodiment is as follows: the sealed volume enclosed by the inner gear ring 7, the outer gear shaft 8, the flow distribution plate A10 and the flow distribution plate B12 is divided into two parts by a meshing line of the crescent plate 9 and the gear, namely an oil suction cavity and an oil pressing cavity are formed; when the transmission shaft drives the outer gear shaft 8 to rotate, the inner gear ring 7 rotates in the same direction, the upper half gear teeth of the inner gear ring 7 are disengaged, and the sealed volume is gradually increased; forming a local vacuum degree, and allowing oil to enter the sealed volume under the action of atmospheric pressure, namely absorbing oil; the lower half gear teeth are meshed to gradually reduce the sealed volume, so that oil is extruded, the pressure is increased, and oil is discharged.
The beneficial effects of the specific implementation mode are as follows: the front end cover and the shell of the existing pump product are eliminated, the material and manufacturing cost is effectively reduced, and only the sealing element and the pump rear cover are reserved outside the functional valve block, so that the installation volume is greatly reduced; by adopting an internal engagement mode, the noise of the product is 15-20 decibels lower than that of the existing pump products, and the pump is particularly suitable for equipment which has compact space and needs low noise.
The second embodiment is as follows: the specific embodiment is that the connection relation between the driving motor and the transmission gear is as follows:
see FIG. 3; the bearing assembly 2 consists of a shaft connecting piece 16, a retainer ring 17, a framework oil seal 18 and a composite bearing 19; the composite bearing 19 is embedded in a reserved hole groove in the middle of the connecting disc 4, the outer side of the composite bearing is sealed through a framework oil seal 18 and is fixed through a check ring 17; the shaft connecting piece 16 is inserted in a clamping groove of an output shaft of the driving motor 1; the upper end of the external gear shaft 8 is in a convex structure, penetrates through a middle hole groove of the valve block 5, and is inserted into a composite bearing 19 in the middle of the connecting disc 4 to be connected with the lower end of the shaft connecting piece 16 in an inserting mode.
The third concrete implementation mode: the specific implementation mode is that the external connection structure relationship of the functional valve block is as follows:
referring to fig. 4, the four outer walls of the valve block 5 are screwed with an electromagnetic valve 20, a one-way valve 21, an overflow valve 22 and a plastic plug screw 23; the lower surface of the valve block 5 is screwed with a pressure compensation valve 24 and an oil suction pipe 25, and the lower end of the oil suction pipe 25 is screwed with a filter screen 26.
Wherein, four corners of the lower surface of the valve block 5 are fixed with oil tanks 27 through bolts in a sealing way, and one side of the oil tank 27 is screwed with an oil tank cover 28; the valve bodies on the outer side of the valve block 5 are connected through an oil circuit in the valve block 5; the output shaft of the driving motor 1 and the external gear shaft 8 are kept on the same axis; the crescent board 9 is formed by combining two crescent blocks, and two sides are fixed between the flow distribution piece A10 and the flow distribution piece B12 through a micro pin shaft.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides an integral type power pack of embedded oil pump of valve block which characterized in that: the novel pump comprises a driving motor (1), a bearing assembly (2), a connecting bolt (3), a connecting disc (4), a valve block (5), an embedded pump groove (6), an inner gear ring (7), an outer gear shaft (8), a crescent plate (9), a flow distribution plate A (10), a rear cover sealing assembly (11), a flow distribution plate B (12), a front cover sealing assembly (13), a semicircular pin (14) and a rear cover (15); the connecting disc (4) is fixed on the outer surface of the valve block (5) through four groups of connecting bolts (3); an embedded pump groove (6) is formed in the middle of the inner side of the valve block (5), an inner gear ring (7) is movably mounted inside the embedded pump groove (6), an outer gear shaft (8) is meshed inside the inner gear ring (7), and a crescent plate (9) is arranged in a cavity between the inner gear ring (7) and the outer gear shaft (8); the front end and the rear end of the inner gear ring (7) are respectively provided with a flow distribution piece A (10) and a flow distribution piece B (12), the flow distribution piece A (10) and the flow distribution piece B (12) are connected through a semicircular pin (14), and an outer gear shaft (8) and a crescent plate (9) are fixed in the inner gear ring (7) in a limiting manner; the outer sides of the flow distribution sheet A (10) and the flow distribution sheet B (12) are respectively provided with a rear cover sealing assembly (11) and a front cover sealing assembly (13); the internal engagement oil pump is integrally fixed in the embedded pump groove (6) in a sealing way through a rear cover (15); the front end of the outer gear shaft (8) penetrates through the valve block (5) and is connected with a transmission shaft of a driving motor (1) fixed on the outer side of the connecting disc (4) through a bearing assembly (2).
2. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: the bearing assembly (2) consists of a shaft connecting piece (16), a retainer ring (17), a framework oil seal (18) and a composite bearing (19); the composite bearing (19) is embedded in a reserved hole groove in the middle of the connecting disc (4), the outer side of the composite bearing is sealed through a framework oil seal (18) and is fixed through a retaining ring (17); the shaft connecting piece (16) is inserted in the clamping groove of the output shaft of the driving motor (1).
3. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: the upper end of the outer gear shaft (8) is of a convex structure, penetrates through a middle hole groove of the valve block (5), and is inserted into a composite bearing (19) in the middle of the connecting disc (4) to be connected with the lower end of the shaft connecting piece (16) in an inserting mode.
4. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: the four walls of the outer side of the valve block (5) are screwed with an electromagnetic valve (20), a one-way valve (21), an overflow valve (22) and a plastic plug screw (23); the lower surface of the valve block (5) is screwed with a pressure compensation valve (24) and an oil suction pipe (25), and the lower end of the oil suction pipe (25) is screwed with a filter screen (26).
5. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: four corners of the lower surface of the valve block (5) are fixedly provided with an oil tank (27) in a sealing way through bolts, and one side of the oil tank (27) is screwed with an oil tank cover (28).
6. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: the check valve (21), the overflow valve (22), the pressure compensation valve (24) and the oil suction pipe (25) which are connected with the outer side of the valve block (5) are connected with an internal oil circuit through the valve block (5).
7. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: the output shaft of the driving motor (1) and the outer gear shaft (8) are kept on the same axis.
8. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: the crescent plate (9) is formed by combining two crescent blocks, and two sides of the crescent plate are fixed between the flow distribution sheet A (10) and the flow distribution sheet B (12) through a micro pin shaft.
9. The integrated power unit with the oil pump embedded in the valve block as claimed in claim 1, wherein: the rear cover sealing assembly (11) comprises a rear cover sealing ring and a rear cover sealing retainer ring; the front cover sealing assembly (13) comprises a front cover sealing ring and a front cover sealing retainer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606844.3A CN110285105B (en) | 2019-07-06 | 2019-07-06 | Integrated power unit with oil pump embedded in valve block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606844.3A CN110285105B (en) | 2019-07-06 | 2019-07-06 | Integrated power unit with oil pump embedded in valve block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110285105A CN110285105A (en) | 2019-09-27 |
| CN110285105B true CN110285105B (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910606844.3A Active CN110285105B (en) | 2019-07-06 | 2019-07-06 | Integrated power unit with oil pump embedded in valve block |
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| CN (1) | CN110285105B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732332U (en) * | 2012-02-29 | 2013-02-13 | 盐城市驰英机械科技有限公司 | Internal engagement gear pump |
| CN203321908U (en) * | 2013-05-24 | 2013-12-04 | 淮安威博液压有限公司 | Power unit for stepless speed change full-electric stacker |
| CN206329577U (en) * | 2016-12-22 | 2017-07-14 | 淮安威博液压有限公司 | A kind of multifunction dynamic unit |
| CN109505828A (en) * | 2018-12-06 | 2019-03-22 | 陕西航天动力高科技股份有限公司 | A kind of hydraulic power unit Oil pump electrical machinery component |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10072676B2 (en) * | 2014-09-23 | 2018-09-11 | Project Phoenix, LLC | System to pump fluid and control thereof |
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2019
- 2019-07-06 CN CN201910606844.3A patent/CN110285105B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732332U (en) * | 2012-02-29 | 2013-02-13 | 盐城市驰英机械科技有限公司 | Internal engagement gear pump |
| CN203321908U (en) * | 2013-05-24 | 2013-12-04 | 淮安威博液压有限公司 | Power unit for stepless speed change full-electric stacker |
| CN206329577U (en) * | 2016-12-22 | 2017-07-14 | 淮安威博液压有限公司 | A kind of multifunction dynamic unit |
| CN109505828A (en) * | 2018-12-06 | 2019-03-22 | 陕西航天动力高科技股份有限公司 | A kind of hydraulic power unit Oil pump electrical machinery component |
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| Publication number | Publication date |
|---|---|
| CN110285105A (en) | 2019-09-27 |
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