CN102562583A - Triple gear pump - Google Patents
Triple gear pump Download PDFInfo
- Publication number
- CN102562583A CN102562583A CN2012100291915A CN201210029191A CN102562583A CN 102562583 A CN102562583 A CN 102562583A CN 2012100291915 A CN2012100291915 A CN 2012100291915A CN 201210029191 A CN201210029191 A CN 201210029191A CN 102562583 A CN102562583 A CN 102562583A
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Abstract
The invention discloses a triple gear pump and belongs to the technical field of gear pumps. The invention aims at solving a technical problem that the triple gear pump can satisfy use requirements and has a small floor space and a long service life. The triple gear pump is characterized in that a fore-pump driving gear engages with a fore-pump driven gear; the fore-pump driving gear and the fore-pump driven gear are installed in a fore-pump; a front cover is connected to the fore-pump by first pins; a mid-pump driving gear engages with a mid-pump driven gear; the mid-pump driving gear and the mid-pump driven gear are installed in a mid-pump; a rear-pump driving pump engages with a rear-pump driven pump; the rear-pump driving pump and the rear-pump driven pump are installed in a rear-pump; a rear cover is connected to the rear-pump by bolts; the fore-pump driving gear and the rear-pump driving pump are connected to the mid-pump driving gear through cooperation between external splines and internal splines; an intermediate is installed between the fore-pump and the mid-pump; an intermediate is installed between the mid-pump and the rear-pump; and the fore-pump, the mid-pump and the rear-pump are connected by multiple second pins. The triple gear pump is suitable for being utilized as a gear pump of a small engineering machinery hydraulic system.
Description
Technical field
Triple gear pump of the present invention belongs to the gear pump technical field.
Background technique
Placement is that the driving gear exposed parts of forward and backward pump is an external splines in the middle of duplex that existing engineering hydraulic system is used or the multi-gear pump, and the two connects through spline housing, and transmitting torque makes back pump proper functioning.This designs deficiency: be to guarantee the intensity of spline and the normal operation of oil pump, the length of spline must reach certain requirement, could satisfy usage requirement, and this design takes up room greatlyyer, is difficult to satisfy requirement of client sometimes.
Summary of the invention
The present invention overcomes the deficiency that existing technology exists, technical problem to be solved provide a kind ofly satisfy usage requirement, triple gear pump little, long service life takes up room.
For solving the problems of the technologies described above; The technological scheme that the present invention adopted is: the triple gear pump; Comprise preceding pump assembly, middle pump assembly, back pump assembly; The structure of preceding pump assembly is: the inside of the pump housing before front pump driving gear and front pump driven gear are installed in, and front pump driving gear is meshed with front pump driven gear, and protecgulum is connected with the preceding pump housing through first bearing pin;
The structure of middle pump assembly is: middle pump driving gear and middle pump driven gear are installed in the inside of middle pump body, and middle pump driving gear is meshed with middle pump driven gear;
The structure of back pump assembly is: rear pump driven gear and rear pump driving gear are installed in the inside of the back pump housing; Rear pump driven gear is meshed with rear pump driving gear; Bonnet is connected with the back pump housing through bolt; The axis body axle head of front pump driving gear and rear pump driven gear is external splines, and the axis body two ends of middle pump driving gear are internal spline, and front pump driving gear all is connected with middle pump driving gear with the cooperation of internal spline through external splines with rear pump driven gear; Between the preceding pump housing and the middle pump body and between the middle pump body and the back pump housing intermediate is installed all, the preceding pump housing, middle pump body and the back pump housing are connected through a plurality of second bearing pins successively.
Floating buss all is installed on the axis body of said all gears.
All be equipped with sliding bearing on said all floating busses.
Between described floating buss and the intermediate, between floating buss and the protecgulum, the sleeve sealing circle is installed all between floating buss and the bonnet.
Before described between the pump housing and protecgulum, the intermediate, between middle pump body and two intermediates, pump housing seal ring is installed all between the back pump housing and intermediate, the bonnet.
The present invention compares with existing technology has following beneficial effect.
1, the present invention is connected to come transmitting torque through front pump driving gear, rear pump driven gear with the interior external splines of middle pump driving gear axis body; Reduced the design of spline housing; The length overall of oil pump is shortened; Rely on floating buss balance gear pumping pressure, improved the total efficiency of oil pump effectively, reduced again to take up room.
2, the pin of the pump housing, middle pump body and the back pump housing guaranteed transmitting accuracy before the present invention relied on and connects, and was equipped with sliding bearing on the floating buss, had strengthened the self lubricity of oil pump effectively, improved the working life of oil pump.
3, the present invention has all installed seal ring on the axle sleeve and the pump housing, has guaranteed oil pump efficiency characteristic and sealing.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a structural representation of the present invention.
Among the figure, 1 is preceding pump assembly, and 2 is middle pump assembly, and 3 is the back pump assembly, and 4 is front pump driving gear; 5 is front pump driven gear, and 6 is the preceding pump housing, and 7 is protecgulum, and 8 is first bearing pin, and 9 is middle pump driving gear; 10 is middle pump driven gear, and 11 is middle pump body, and 12 is rear pump driven gear, and 13 is rear pump driving gear, and 14 is the back pump housing; 15 is bonnet, and 16 is bolt, and 17 is external splines, and 18 is internal spline, and 19 is intermediate; 20 is second bearing pin, and 21 is floating buss, and 22 is the sleeve sealing circle, and 23 is pump housing seal ring.
Embodiment
As shown in Figure 1; Triple gear pump of the present invention; Pump assembly 1, middle pump assembly 2, back pump assembly 3 before comprising; The structure of preceding pump assembly 1 is: the inside of the pump housing 6 before front pump driving gear 4 is installed in front pump driven gear 5, and front pump driving gear 4 is meshed with front pump driven gear 5, and protecgulum 7 is connected with the preceding pump housing 6 through first bearing pin 8;
The structure of middle pump assembly 2 is: middle pump driving gear 9 and middle pump driven gear 10 are installed in the inside of middle pump body 11, and middle pump driving gear 9 is meshed with middle pump driven gear 10;
The structure of back pump assembly 3 is: the inside of the pump housing 14 after rear pump driven gear 12 is installed in rear pump driving gear 13; Rear pump driven gear 12 is meshed with rear pump driving gear 13; Bonnet 15 is connected with the back pump housing 14 through bolt 16; The axis body axle head of front pump driving gear 4 and rear pump driven gear 12 is external splines 17; The axis body two ends of middle pump driving gear 9 are internal spline 18; Front pump driving gear 4 all is connected with middle pump driving gear 9 with the cooperation of internal spline 18 through external splines 17 with rear pump driven gear 12, and between the preceding pump housing 6 and the middle pump body 11 and middle pump body 11 and back all is equipped with intermediate 19 between the pump housing 14, and the preceding pump housing 6, middle pump body 11 are connected through a plurality of second bearing pins 20 with the back pump housing 14 successively.
Floating buss 21 all is installed on the axis body of said all gears.
All be equipped with sliding bearing on said all floating busses 21.
Between described floating buss 21 and the intermediate, between floating buss 21 and the protecgulum 7, between floating buss 21 and the bonnet 15 sleeve sealing circle 22 is installed all.
Before described between the pump housing 6 and protecgulum 7, the intermediate 19, between middle pump body 11 and two intermediates 19, between the back pump housing 14 and intermediate 19, the bonnet 15 pump housing seal ring 23 is installed all.
Protecgulum of the present invention 7, bonnet 15 and all pump housings are all selected aluminum casting for use, and intermediate 19 is selected ironcasting for use; All gears have been selected 20CrMnTi for use on material, not only satisfied the transmission requirement of gear pump, satisfy hydraulic system requirement under the high temperature condition simultaneously.
The present invention is designed with three filler openings, and oil suction chamber is ganged up each other.
Working procedure: starting electrical machinery; Motor output shaft drives front pump driving gear 4 and rotates; Front pump driving gear 4 transfers torque on the middle pump driving gear 9 through the interior external splines connection of axis body; Middle pump driving gear 9 transfers torque on the rear pump driven gear 12 through the interior external spliness connection of axis body equally, guarantees the normal operation of oil pump, accomplishes oil suction and fuel-displaced action.
The present invention is applicable to the small engineering machinery hydraulic system.
The external splines design both had been applicable to and also had been applicable to two gear pumps and multi-gear pump by the triple gear pump in of the present invention.
Combine accompanying drawing to do detailed description above, but the present invention is not limited to the foregoing description, in the ken that those of ordinary skills possessed, can also under the prerequisite that does not break away from aim of the present invention, makes various variations of the present invention.For example, the bearing pin among the present invention also can replace with bolt.
Claims (5)
1. triple gear pump; Comprise preceding pump assembly (1), middle pump assembly (2), back pump assembly (3); The structure of preceding pump assembly (1) is: front pump driving gear (4) and front pump driven gear (5) are installed in the inside of the preceding pump housing (6); Front pump driving gear (4) is meshed with front pump driven gear (5), and protecgulum (7) is connected with the preceding pump housing (6) through first bearing pin (8);
The structure of middle pump assembly (2) is: middle pump driving gear (9) and middle pump driven gear (10) are installed in the inside of middle pump body (11), and middle pump driving gear (9) is meshed with middle pump driven gear (10);
The structure of back pump assembly (3) is: the inside of the pump housing (14) after rear pump driven gear (12) is installed in rear pump driving gear (13); Rear pump driven gear (12) is meshed with rear pump driving gear (13); Bonnet (15) is connected with the back pump housing (14) through bolt (16); It is characterized in that: the axis body axle head of front pump driving gear (4) and rear pump driven gear (12) is external splines (17); The axis body two ends of middle pump driving gear (9) are internal spline (18); Front pump driving gear (4) all is connected with middle pump driving gear (9) with the cooperation of internal spline (18) through external splines (17) with rear pump driven gear (12); Between the preceding pump housing (6) and the middle pump body (11) and between the middle pump body (11) and the back pump housing (14) intermediate (19) is installed all, the preceding pump housing (6), middle pump body (11) and the back pump housing (14) are connected through a plurality of second bearing pins (20) successively.
2. triple gear pump according to claim 1 is characterized in that: floating buss (21) all is installed on the axis body of said all gears.
3. triple gear pump according to claim 2 is characterized in that: all be equipped with sliding bearing on said all floating busses (21).
4. according to claim 2 or 3 described triple gear pumps; It is characterized in that: between described floating buss (21) and the intermediate (19); Between floating buss (21) and the protecgulum (7), between floating buss (21) and the bonnet (15) sleeve sealing circle (22) is installed all.
5. according to claim 1 or 2 or 3 described triple gear pumps; It is characterized in that: between the described preceding pump housing (6) and protecgulum (7), the intermediate (19); Between middle pump body (11) and two intermediates (19), between the back pump housing (14) and intermediate (19), the bonnet (15) pump housing seal ring (23) is installed all.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100291915A CN102562583A (en) | 2012-02-10 | 2012-02-10 | Triple gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100291915A CN102562583A (en) | 2012-02-10 | 2012-02-10 | Triple gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102562583A true CN102562583A (en) | 2012-07-11 |
Family
ID=46408897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100291915A Pending CN102562583A (en) | 2012-02-10 | 2012-02-10 | Triple gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102562583A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489611A (en) * | 2017-08-17 | 2017-12-19 | 合肥力威汽车油泵有限公司 | A kind of small impact gear-type oil pump |
| CN109555682A (en) * | 2018-11-21 | 2019-04-02 | 中国航发西安动力控制科技有限公司 | A kind of self-lubricating multichannel fuel feeding gear pump |
| CN110360098A (en) * | 2019-06-11 | 2019-10-22 | 浙江大学 | The combination triple gear pump of balanced radial force |
| CN113167271A (en) * | 2018-11-13 | 2021-07-23 | Ghsp公司 | Modular fluid pump for multiple applications |
| CN113482912A (en) * | 2021-08-06 | 2021-10-08 | 山东世精液压设备有限公司 | Large-discharge-capacity arc spiral gear pump without axial force |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2665638A (en) * | 1949-10-21 | 1954-01-12 | Borg Warner | Gear pump |
| US2750891A (en) * | 1952-12-09 | 1956-06-19 | Oliver Iron And Steel Corp | Rotary power device of the rotary abutment type |
| US4259045A (en) * | 1978-11-24 | 1981-03-31 | Kayabakogyokabushikikaisha | Gear pump or motor units with sleeve coupling for shafts |
| JPH04321783A (en) * | 1991-04-19 | 1992-11-11 | Shimadzu Corp | Tandem pump |
| CN2211506Y (en) * | 1994-11-10 | 1995-11-01 | 青州液压件厂 | Improved two linkage gear pump |
| CN2217123Y (en) * | 1994-11-10 | 1996-01-10 | 青州液压件厂 | Combination triple gear pump |
| JP2002161870A (en) * | 2000-11-24 | 2002-06-07 | Shimadzu Corp | Multiple gear pump |
| JP2005023834A (en) * | 2003-07-01 | 2005-01-27 | Shimadzu Corp | Multiple hydraulic gear pump |
| CN202468311U (en) * | 2012-02-10 | 2012-10-03 | 长治液压有限公司 | Triple gear pump |
-
2012
- 2012-02-10 CN CN2012100291915A patent/CN102562583A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2665638A (en) * | 1949-10-21 | 1954-01-12 | Borg Warner | Gear pump |
| US2750891A (en) * | 1952-12-09 | 1956-06-19 | Oliver Iron And Steel Corp | Rotary power device of the rotary abutment type |
| US4259045A (en) * | 1978-11-24 | 1981-03-31 | Kayabakogyokabushikikaisha | Gear pump or motor units with sleeve coupling for shafts |
| JPH04321783A (en) * | 1991-04-19 | 1992-11-11 | Shimadzu Corp | Tandem pump |
| CN2211506Y (en) * | 1994-11-10 | 1995-11-01 | 青州液压件厂 | Improved two linkage gear pump |
| CN2217123Y (en) * | 1994-11-10 | 1996-01-10 | 青州液压件厂 | Combination triple gear pump |
| JP2002161870A (en) * | 2000-11-24 | 2002-06-07 | Shimadzu Corp | Multiple gear pump |
| JP2005023834A (en) * | 2003-07-01 | 2005-01-27 | Shimadzu Corp | Multiple hydraulic gear pump |
| CN202468311U (en) * | 2012-02-10 | 2012-10-03 | 长治液压有限公司 | Triple gear pump |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489611A (en) * | 2017-08-17 | 2017-12-19 | 合肥力威汽车油泵有限公司 | A kind of small impact gear-type oil pump |
| CN107489611B (en) * | 2017-08-17 | 2023-04-25 | 合肥力威汽车油泵有限公司 | Small impact gear type oil pump |
| CN113167271A (en) * | 2018-11-13 | 2021-07-23 | Ghsp公司 | Modular fluid pump for multiple applications |
| CN113167271B (en) * | 2018-11-13 | 2024-03-15 | Ghsp公司 | Modular fluid pump for multiple applications |
| CN109555682A (en) * | 2018-11-21 | 2019-04-02 | 中国航发西安动力控制科技有限公司 | A kind of self-lubricating multichannel fuel feeding gear pump |
| CN109555682B (en) * | 2018-11-21 | 2020-04-28 | 中国航发西安动力控制科技有限公司 | Self-lubricating multichannel fuel feeding gear pump |
| CN110360098A (en) * | 2019-06-11 | 2019-10-22 | 浙江大学 | The combination triple gear pump of balanced radial force |
| CN110360098B (en) * | 2019-06-11 | 2022-03-25 | 浙江大学 | Radial force balanced triple gear pump |
| CN113482912A (en) * | 2021-08-06 | 2021-10-08 | 山东世精液压设备有限公司 | Large-discharge-capacity arc spiral gear pump without axial force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |