CN102767515A - Double-row external gear pump - Google Patents
Double-row external gear pump Download PDFInfo
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- CN102767515A CN102767515A CN2012102958105A CN201210295810A CN102767515A CN 102767515 A CN102767515 A CN 102767515A CN 2012102958105 A CN2012102958105 A CN 2012102958105A CN 201210295810 A CN201210295810 A CN 201210295810A CN 102767515 A CN102767515 A CN 102767515A
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- pinion
- main shaft
- external gear
- gear pump
- pump
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Abstract
The invention relates to the technical field of hydraulic transmission control and particularly relates to a double-row external gear pump. The pump comprises a pump body, a main shaft and an auxiliary shaft, wherein the main shaft is installed on the pump body, the auxiliary shaft is installed inside the pump body, a first main gear and a first pinion are arranged on the main shaft and the auxiliary shaft respectively and are connected in a meshing mode, an oil inlet and an oil outlet are arranged on the pump body and extend to the connection position of the first main gear and the first pinion, a second main gear and a second pinion are arranged on the main shaft and the auxiliary shaft respectively, and three valve plates are installed inside the pump body. Valve plates are arranged, so that abrasion between the first main gear and the pump body and between the first pinion and the pump body is greatly reduced, and the service life of the double-row external gear pump is prolonged; valve plates are made of wear resistant materials, so that the production cost of the double-row external gear pump is reduced; and two sets of gears conduct oil pressing simultaneously, so that the hydraulic oil output volume of the double-row external gear pump is greatly improved, the structure is simple, and the practicability is high.
Description
Technical field
The present invention relates to hydraulic transmission control technique field, refer in particular to a kind of double external gear pump.
Background technique
Hydraulic-pressure pump is made up of the pump housing, rectangular fuel tank, pressure handle, ultrahigh pressure wire braided hose four major parts; The dynamical element of hydraulic system; Its effect is the pressure ability that the mechanical energy of prime mover is converted to liquid, refers to the oil pump in the hydraulic system, and it provides power to whole hydraulic system.The structural type of oil hydraulic pump generally has gear pump, vane pump and plunger pump.
The gear pump structure is relatively simple; The citation form that is it is exactly the rotations that in a close-fitting housing, are meshing with each other of two measure-alike gears; The inner classes of this housing is like the figure of eight, and two gears are contained in the inside, and the external diameter of gear and both sides and housing closely cooperate.The material that comes from extruder and is full of this space in the middle of suction port gets into two gears, along with the rotation of tooth is moved along housing, and discharge when two teeth meshs at last, thus mechanical energy is transformed into the pressure ability of liquid.
In the work of gear pump, the two ends of gear relatively move respectively and between the pump housing, and are accompanied by friction; Thereby cause between the inwall of the gear and the pump housing wearing and tearing comparatively serious, have a strong impact on the working life of gear pump, if the pump housing is adopted the high-abrasive material manufacturing; Then can improve the cost of production of gear pump greatly, in addition, be difficult to obviously improve the gear pump delivery under the constant prerequisite of gear pump diameter of cylinder; Thereby be difficult to satisfy the demand to big discharge capacity, defective is obvious.
Summary of the invention
The technical problem that the present invention will solve provide a kind of simple in structure, effectively improve wear resistance between the parts, can increase the service life greatly, improve the double external gear pump of hydraulic oil discharge capacity.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme: double external gear pump comprises the pump housing, is installed in the main shaft of the pump housing and is installed in the countershaft in the pump housing; Main shaft and countershaft are respectively arranged with first master gear and first pinion, and first master gear and first pinion are connected with a joggle, and the pump housing offers oil inlet hole and oil outlet; Oil inlet hole and oil outlet all extend to the joint of first master gear and first pinion; Said main shaft and countershaft are equiped with second master gear and second pinion respectively, are equiped with three thrust plates in the said pump housing, and thrust plate offers two mounting holes; Main shaft and countershaft pass this two mounting holes respectively; Three thrust plates form two intervals side by side, and first master gear and first pinion are positioned at one of them at interval, and second master gear and second pinion are positioned at another at interval.
Wherein, the said pump housing comprises body, protecgulum and bonnet, and this protecgulum is connected with the sealed at both ends of body respectively with bonnet, and protecgulum offers and is used for the sleeve joint hole that main shaft passes, and oil inlet hole and oil outlet lay respectively at the two side of body.
Wherein, be equiped with outside framework oil seal in the said sleeve joint hole, said main shaft passes this outside framework oil seal.
Wherein, be equiped with the interior snap ring that is used for fixing outside framework oil seal in the said sleeve joint hole, snap ring and outside framework oil seal butt in this.
Wherein, said protecgulum and bonnet are provided with locating stud, and said body offers positioning hole, and an end of locating stud inserts in this positioning hole.
Wherein, said protecgulum and bonnet all offer groove, are equiped with seal ring in this groove, the end butt of sealing circle and said body.
Wherein, place, the outer of said protecgulum offers at least two U-shaped mounting grooves.
Wherein, the said main shaft and first master gear are one-body molded, and main shaft is connected with the second master gear key.
Wherein, the said countershaft and first pinion are one-body molded, and countershaft is connected with the second pinion key.
Beneficial effect of the present invention is: the invention provides a kind of double external gear pump, in the course of the work, the main shaft and first master gear rotate; And drive first pinion and rotate; Hydraulic oil enters in the pump housing from oil inlet hole, and stays in the space between the gear teeth, the rotation of first master gear and first pinion; Hydraulic oil in the gear teeth space, and is extruded from oil outlet to oil outlet along first master gear and the first pinion external moving.Because the setting of thrust plate; The wearing and tearing between first master gear and first pinion and the pump housing have been reduced greatly; Prolonged the working life of double external gear pump,, need not the manufacturing of the whole employing of pump housing high-abrasive material owing to have only thrust plate to adopt the high-abrasive material manufacturing; Reduced the cost of production of double external gear pump, cost performance is higher.When main shaft and countershaft rotated, second master gear and second pinion also rotated synchronously, so that extraly carry out one group and press the oil action, two groups of gears are pressed oil simultaneously, have improved the hydraulic oil discharge capacity of double external gear pump greatly, and are simple in structure, practical.
Description of drawings
Fig. 1 is the perspective view of an embodiment of the present invention.
Fig. 2 is the perspective view at another visual angle of the present invention.
Fig. 3 is a stereochemical structure decomposing schematic representation of the present invention.
Fig. 4 is the cross-sectional view of A-A among Fig. 1.
Fig. 5 is the perspective view after the mid-sectional of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing the present invention is further described, the content that mode of execution is mentioned not is to qualification of the present invention.
Extremely shown in Figure 5 like Fig. 1; A kind of double external gear pump comprises the pump housing, is installed in the main shaft 1 of the pump housing and is installed in the countershaft 2 in the pump housing that main shaft 1 is respectively arranged with first master gear 3 and first pinion 4 with countershaft 2; First master gear 3 and first pinion 4 are connected with a joggle; The pump housing offers oil inlet hole 5 and oil outlet 6, and oil inlet hole 5 and oil outlet 6 all extend to the joint of first master gear 3 and first pinion 4, and said main shaft 1 is equiped with second master gear 18 and second pinion 19 respectively with countershaft 2; Be equiped with three thrust plates 7 in the said pump housing; Thrust plate 7 offers two mounting holes 8, and main shaft 1 passes 8, three thrust plates of these two mounting holes 7 respectively with countershaft 2 and forms two intervals side by side; First master gear 3 and first pinion 4 are positioned at one of them at interval, and second master gear 18 and second pinion 19 are positioned at another at interval.
See Fig. 4 and Fig. 5 double external gear pump according to the invention in the course of the work; The main shaft 1 and first master gear 3 rotate, and drive 4 rotations of first pinion, and hydraulic oil enters in the pump housing from oil inlet hole 5; And stay in the space between the gear teeth; The rotation of first master gear 3 and first pinion 4, the hydraulic oil in the gear teeth space, and are extruded from oil outlet 6 to oil outlet 6 along first master gear 3 and first pinion, 4 external moving.Because the setting of thrust plate 7; The wearing and tearing between first master gear 3 and first pinion 4 and the pump housing have been reduced greatly; Prolonged the working life of double external gear pump,, need not the manufacturing of the whole employing of pump housing high-abrasive material owing to have only thrust plate 7 to adopt the high-abrasive material manufacturing; Reduced the cost of production of double external gear pump, cost performance is higher.
In the present embodiment, the both sides, middle part of the thrust plate 7 in the middle of being positioned at all offer and are used for the mobile breach that hydraulic oil passes through.When main shaft 1 rotates with countershaft 2; Second master gear 18 and second pinion 19 also rotate synchronously, so that extraly carry out one group and press the oil action, two groups of gears are pressed oil simultaneously; And converge concentrated through the breach that flows; Improved the hydraulic oil discharge capacity of double external gear pump greatly, simple in structure, practical.
The said pump housing of present embodiment comprises body 9, protecgulum 10 and bonnet 11; This protecgulum 10 is connected with the sealed at both ends of body 9 respectively with bonnet 11; Oil inlet hole 5 and oil outlet 6 lay respectively at the two side of body 9; Protecgulum 10 offers and is used for the sleeve joint hole 12 that main shaft 1 passes, and to reduce the difficulty of processing and the assembling difficulty of the pump housing, further reduces the cost of production of double external gear pump.
Be equiped with outside framework oil seal 13 in the said sleeve joint hole 12 of present embodiment; Said main shaft 1 passes this outside framework oil seal 13, under the prerequisite that does not influence said main shaft 1 rotation, guarantees the sealability of main shaft 1 and protecgulum 10 attachment portions; Avoid oil pressure to reveal and befouling environment, practicability is stronger.
See Fig. 2 and Fig. 4; Be equiped with the interior snap ring 14 that is used for fixing outside framework oil seal 13 in the said sleeve joint hole 12 of present embodiment; Be somebody's turn to do interior snap ring 14 and outside framework oil seal 13 butts, greatly reduce the installation difficulty of outside framework oil seal 13, improved the efficiency of assembling of double external gear pump.
See Fig. 2 and Fig. 4; The said protecgulum 10 and the bonnet 11 of present embodiment are provided with locating stud 15, and said body 9 offers positioning hole, and an end of locating stud 15 inserts in this positioning hole; In assembling process; The highi degree of accuracy assembling that can guarantee in the positioning hole between protecgulum 10 and bonnet 11 and the body 9 is inserted in the end of locating stud 15, further reduce the assembling difficulty of double external gear pump, improve its manufacturing efficiency.
See Fig. 2 and Fig. 4, the said protecgulum 10 and the bonnet 11 of present embodiment all offer groove, are equiped with seal ring 16 in this groove, and the end butt of sealing circle 16 and said body 9 to improve the sealability of the pump housing, avoids oil pressure to reveal and befouling environment.
The place, outer of the said protecgulum 10 of present embodiment offers two U-shaped mounting grooves 17, so that through bolt be connected fixing with motor or miscellaneous equipment said double external gear pump.Certainly, the quantity of U-shaped mounting groove 17 can also be other numerical value, gets final product according to concrete setting of assembling needs.
The said main shaft 1 of present embodiment and first master gear 3 are one-body molded, and main shaft 1 is connected with second master gear, 18 keys; The said countershaft 2 and first pinion 4 are one-body molded, and countershaft 2 is connected with second pinion, 19 keys.
On the one hand, when assembling, can easily the thrust plate 7 in the centre be installed between two groups of gears; On the other hand; The main shaft 1 and first master gear 3 need not to assemble once more; The countershaft 2 and first pinion 4 also need not to assemble once more, avoid in both assembling process influencing because adjustment is inaccurate the quality of processing of double external gear pump, have reduced the manufacturing procedure of component simultaneously; Cost is lower, and practicability is stronger.
The foregoing description is the preferable implementation of the present invention, and in addition, the present invention can also realize by alternate manner that any conspicuous replacement is all within protection scope of the present invention under the prerequisite that does not break away from the present invention's design.
Claims (9)
1. double external gear pump; Comprise the pump housing, be installed in the main shaft (1) of the pump housing and be installed in the countershaft (2) in the pump housing; Main shaft (1) and countershaft (2) are respectively arranged with first master gear (3) and first pinion (4); First master gear (3) and first pinion (4) are connected with a joggle; The pump housing offers oil inlet hole (5) and oil outlet (6), and oil inlet hole (5) and oil outlet (6) all extend to the joint of first master gear (3) and first pinion (4), it is characterized in that: said main shaft (1) and countershaft (2) are equiped with second master gear (18) and second pinion (19) respectively; Be equiped with three thrust plates (7) in the said pump housing; Thrust plate (7) offers two mounting holes (8), and main shaft (1) and countershaft (2) pass this two mounting holes (8) respectively, and three thrust plates (7) form two intervals side by side; First master gear (3) and first pinion (4) are positioned at one of them at interval, and second master gear (18) and second pinion (19) are positioned at another at interval.
2. double external gear pump according to claim 1; It is characterized in that: the said pump housing comprises body (9), protecgulum (10) and bonnet (11); This protecgulum (10) is connected with the sealed at both ends of body (9) respectively with bonnet (11); Protecgulum (10) offers and is used for the sleeve joint hole (12) that main shaft (1) passes, and oil inlet hole (5) and oil outlet (6) lay respectively at the two side of body (9).
3. double external gear pump according to claim 2 is characterized in that: be equiped with outside framework oil seal (13) in the said sleeve joint hole (12), said main shaft (1) passes this outside framework oil seal (13).
4. double external gear pump according to claim 3 is characterized in that: be equiped with the interior snap ring (14) that is used for fixing outside framework oil seal (13) in the said sleeve joint hole (12), snap ring (14) and outside framework oil seal (13) butt in this.
5. double external gear pump according to claim 2 is characterized in that: said protecgulum (10) and bonnet (11) are provided with locating stud (15), and said body (9) offers positioning hole, and an end of locating stud (15) inserts in this positioning hole.
6. double external gear pump according to claim 2 is characterized in that: said protecgulum (10) and bonnet (11) all offer groove, are equiped with seal ring (16) in this groove, the end butt of sealing circle (16) and said body (9).
7. double external gear pump according to claim 2 is characterized in that: the place, outer of said protecgulum (10) offers at least two U-shaped mounting grooves (17).
8. double external gear pump according to claim 1 is characterized in that: said main shaft (1) and first master gear (3) are one-body molded, and main shaft (1) is connected with second master gear (18) key.
9. double external gear pump according to claim 1 is characterized in that: said countershaft (2) and first pinion (4) are one-body molded, and countershaft (2) is connected with second pinion (19) key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102958105A CN102767515A (en) | 2012-08-20 | 2012-08-20 | Double-row external gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102958105A CN102767515A (en) | 2012-08-20 | 2012-08-20 | Double-row external gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767515A true CN102767515A (en) | 2012-11-07 |
Family
ID=47095031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102958105A Pending CN102767515A (en) | 2012-08-20 | 2012-08-20 | Double-row external gear pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN102767515A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016142597A1 (en) * | 2015-03-11 | 2016-09-15 | Georges Briere S.A. | Gear pump for compressible liquids or fluids |
| CN114738392A (en) * | 2022-03-28 | 2022-07-12 | 三一重机有限公司 | Transmission mechanism, engine and working machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190450A (en) * | 1992-03-06 | 1993-03-02 | Eastman Kodak Company | Gear pump for high viscosity materials |
| CN2683899Y (en) * | 2004-02-13 | 2005-03-09 | 江阴市压缩机厂 | Oil pump of compressor |
| CN2751160Y (en) * | 2004-12-31 | 2006-01-11 | 徐州科源液压有限公司 | Double flow rate and double pressure sequence gear pump |
| CN201412326Y (en) * | 2009-05-27 | 2010-02-24 | 刘兴杰 | Double-motor hydraulic pump |
| CN201599187U (en) * | 2010-01-26 | 2010-10-06 | 东莞市神煜机械有限公司 | External gear pump |
| CN202833125U (en) * | 2012-08-20 | 2013-03-27 | 东莞市神煜机械有限公司 | Double-row outer meshed gear pump |
-
2012
- 2012-08-20 CN CN2012102958105A patent/CN102767515A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190450A (en) * | 1992-03-06 | 1993-03-02 | Eastman Kodak Company | Gear pump for high viscosity materials |
| CN2683899Y (en) * | 2004-02-13 | 2005-03-09 | 江阴市压缩机厂 | Oil pump of compressor |
| CN2751160Y (en) * | 2004-12-31 | 2006-01-11 | 徐州科源液压有限公司 | Double flow rate and double pressure sequence gear pump |
| CN201412326Y (en) * | 2009-05-27 | 2010-02-24 | 刘兴杰 | Double-motor hydraulic pump |
| CN201599187U (en) * | 2010-01-26 | 2010-10-06 | 东莞市神煜机械有限公司 | External gear pump |
| CN202833125U (en) * | 2012-08-20 | 2013-03-27 | 东莞市神煜机械有限公司 | Double-row outer meshed gear pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016142597A1 (en) * | 2015-03-11 | 2016-09-15 | Georges Briere S.A. | Gear pump for compressible liquids or fluids |
| FR3033601A1 (en) * | 2015-03-11 | 2016-09-16 | Georges Briere S A | GEAR PUMP, FOR LIQUID OR COMPRESSIBLE FLUID |
| US10197057B2 (en) | 2015-03-11 | 2019-02-05 | Georges Briere S.A. | Gear pump for compressible liquids or fluids |
| CN114738392A (en) * | 2022-03-28 | 2022-07-12 | 三一重机有限公司 | Transmission mechanism, engine and working machine |
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Application publication date: 20121107 |