CN102767516A - Compact structure type gear pump - Google Patents
Compact structure type gear pump Download PDFInfo
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- CN102767516A CN102767516A CN2012102961269A CN201210296126A CN102767516A CN 102767516 A CN102767516 A CN 102767516A CN 2012102961269 A CN2012102961269 A CN 2012102961269A CN 201210296126 A CN201210296126 A CN 201210296126A CN 102767516 A CN102767516 A CN 102767516A
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- type gear
- gear pump
- pump
- compact type
- pinion
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Abstract
The invention relates to the technical field of hydraulic transmission control and particularly relates to a compact structure type gear pump. The pump comprises a pump body, a main shaft and an auxiliary shaft, a main gear and a pinion are arranged on the main shaft and the auxiliary shaft respectively, two valve plates are installed inside the pump body, both the main gear and the pinion are located between the two valve plates, two installation holes which are used for installing the auxiliary shaft are arranged on the pump body, and two end portions of the auxiliary shaft are movably embedded into the two installation holes respectively. Valve plates are arranged, so that abrasion between the main gear and the pump body and between the pinion and the pump body is greatly reduced, and the service life of the compact structure type gear pump is prolonged; and two installation holes which are used for installing the auxiliary shaft are arranged on the pump body, most of the auxiliary shaft is carried by the pump body, and the thickness of valve plates is greatly reduced, so that the overall dimension of the compact structure type gear pump is reduced, the space that the pump occupies is small, and the pump is convenient to install.
Description
Technical field
The present invention relates to hydraulic transmission control technique field, refer in particular to a kind of compact type 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, defective is obvious.
In addition, because thrust plate need carry countershaft, so the thickness of thrust plate is bigger, thereby cause the overall structure volume of gear pump bigger, the space that takies equipment is bigger, is not easy to the installation of gear pump and fixes.
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, the compact type gear pump that can increase the service life greatly.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme: a kind of compact type 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 master gear and pinion; Master gear and pinion are connected with a joggle, and the pump housing offers oil inlet hole and oil outlet, and oil inlet hole and oil outlet all extend to the joint of master gear and pinion; Be equiped with two thrust plates in the said pump housing; All between two thrust plates, the said pump housing offers two mounting holes that are used to install countershaft for master gear and pinion, and two ends of countershaft are movable respectively to embed in two mounting holes.
Wherein, the said pump housing comprises body, protecgulum and bonnet, and this protecgulum is connected with the two 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; Said two mounting holes lay respectively at body and bonnet.
Wherein, said protecgulum and this body by integral forming.
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 bonnet is provided with positioning bead, and said body offers positioning hole, and half of positioning bead embeds 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 screws.
Wherein, be embedded with oilite bushing in the said mounting hole, the end of said countershaft is set in the oilite bushing.
Wherein, said main shaft and master gear are one-body molded; Said countershaft and pinion are one-body molded.
Beneficial effect of the present invention is: the invention provides a kind of compact type gear pump, in the course of the work, main shaft and master gear rotate; And the drive pinion rotates; Hydraulic oil enters in the pump housing from oil inlet hole, and stays in the space between the gear teeth rotation of master gear and pinion; Hydraulic oil in the gear teeth space, and is extruded from oil outlet to oil outlet along master gear and pinion external moving.Because the setting of thrust plate; The wearing and tearing between master gear and pinion and the pump housing have been reduced greatly; Prolonged the working life of structure compact 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 structure compact gear pump, cost performance is higher.The pump housing of the present invention offers two mounting holes that are used to install countershaft; Make the pump housing play most carrying effect, reduced the thickness of thrust plate greatly, thereby reduce the overall dimensions size of compact type gear pump countershaft; The space of occupying equipment is less, the convenient installation.
Description of drawings
Fig. 1 is the main TV structure schematic representation of an embodiment of the present invention.
Fig. 2 is the present invention left side TV structure schematic representation.
Fig. 3 is the cross-sectional view of A-A among Fig. 1.
Fig. 4 is the cross-sectional view of B-B among Fig. 2.
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.
To shown in Figure 4, a kind of compact type 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 like Fig. 1; Main shaft 1 is respectively arranged with master gear 3 and pinion 4 with countershaft 2; Master gear 3 is connected with a joggle with pinion 4, and 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 master gear 3 and pinion 4; Be equiped with two thrust plates 7 in the said pump housing; All between two thrust plates 7, the said pump housing offers two mounting holes 8 that are used to install countershaft 2 for master gear 3 and pinion 4, and two ends of countershaft 2 are movable respectively to embed in two mounting holes 8.
See Fig. 3 and Fig. 4, compact type gear pump according to the invention in the course of the work, main shaft 1 rotates with master gear 3; And drive pinion 4 rotates; Hydraulic oil enters in the pump housing from oil inlet hole 5, and stays in the space between the gear teeth, the rotation of master gear 3 and pinion 4; Hydraulic oil in the gear teeth space, and is extruded from oil outlet 6 to oil outlet 6 along master gear 3 and pinion 4 external moving.Because the setting of thrust plate 7; The wearing and tearing between master gear 3 and the pinion 4 and the pump housing have been reduced greatly; Prolonged the working life of structure compact 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 structure compact gear pump, cost performance is higher.The pump housing of the present invention offers two mounting holes 8 that are used to install countershaft 2; Make the pump housing play most carrying effect, reduced the thickness of thrust plate 7 greatly, thereby reduce the overall dimensions size of compact type gear pump countershaft 2; The space of occupying equipment is less, the convenient installation.
The said pump housing of present embodiment comprises body 9, protecgulum 10 and bonnet 11, and this protecgulum 10 is connected with the two ends of body 9 respectively with bonnet 11, and protecgulum 10 offers and is used for the sleeve joint hole that main shaft 1 passes, and oil inlet hole 5 and oil outlet 6 lay respectively at the two side of body 9; Said two mounting holes 8 lay respectively at body 9 and bonnet 11, to reduce the difficulty of processing and the assembling difficulty of the pump housing, further reduce the cost of production of compact type gear pump.
See Fig. 4; The said protecgulum 10 of present embodiment is one-body molded with body 9; Removed the installation procedure between protecgulum 10 and the body 9 from; Need not installation precision between protecgulum 10 and the body 9 and sealability are carried out extra adjustment, improved the packaging efficiency of gear pump, thereby further reduced its cost of production.
See Fig. 4, be equiped with outside framework oil seal 13 in the said sleeve joint hole 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, guarantee the sealability of main shaft 1 and protecgulum 10 attachment portions, avoid oil pressure to reveal and befouling environment, practicability is stronger.
Be equiped with the interior snap ring 14 that is used for fixing outside framework oil seal 13 in the said sleeve joint hole of present embodiment, snap ring 14 and outside framework oil seal 13 butts in this greatly reduce the installation difficulty of outside framework oil seal 13, have improved the efficiency of assembling of structure compact gear pump.
See Fig. 4, the said bonnet 11 of present embodiment is provided with positioning bead 15, and said body 9 offers positioning hole, and half of positioning bead 15 embeds in this positioning hole.In assembling process, can guarantee the highi degree of accuracy assembling between protecgulum 10 and bonnet 11 and the body 9 in half the embedding positioning hole with positioning bead 15, further reduce the assembling difficulty of compact type gear pump, improve its manufacturing efficiency.
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 four screws 17, so that through bolt be connected fixing with motor or miscellaneous equipment said compact type gear pump.Certainly, the concrete quantity of screw 17 can also be other numerical value, gets final product according to concrete setting of the actual demand of assembling.
Be embedded with oilite bushing 12 in the said mounting hole 8 of present embodiment; The end of said countershaft 2 is set in the oilite bushing 12; The end of countershaft 2 and the surface friction drag between the mounting hole 8 have been reduced on the one hand; Reduce the end of countershaft 2 and the wearing and tearing between the mounting hole 8 on the other hand, prolonged the physical life of structure compact gear pump greatly.
The said main shaft 1 of present embodiment is one-body molded with master gear 3, and said countershaft 2 is one-body molded with pinion 4.Main shaft 1 need not to assemble once more with master gear 3; Countershaft 2 also need not to assemble once more with pinion 4, avoids in both assembling process influencing because adjustment is inaccurate the quality of processing of compact type gear pump, has 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 (10)
1. compact type 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 master gear (3) and pinion (4); Master gear (3) and pinion (4) are connected with a joggle, and 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 master gear (3) and pinion (4); It is characterized in that: be equiped with two thrust plates (7) in the said pump housing; Master gear (3) and pinion (4) all are positioned between two thrust plates (7), and the said pump housing offers two mounting holes (8) that are used to install countershaft (2), and two ends of countershaft (2) are movable respectively to embed in two mounting holes (8).
2. compact type 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 two ends of body (9) respectively with bonnet (11); Protecgulum (10) offers and is used for the sleeve joint hole that main shaft (1) passes, and oil inlet hole (5) and oil outlet (6) lay respectively at the two side of body (9); Said two mounting holes (8) lay respectively at body (9) and bonnet (11).
3. compact type gear pump according to claim 2 is characterized in that: said protecgulum (10) and body (9) are one-body molded.
4. compact type gear pump according to claim 2 is characterized in that: be equiped with outside framework oil seal (13) in the said sleeve joint hole, said main shaft (1) passes this outside framework oil seal (13).
5. compact type gear pump according to claim 4 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, snap ring (14) and outside framework oil seal (13) butt in this.
6. compact type gear pump according to claim 2 is characterized in that: said bonnet (11) is provided with positioning bead (15), and said body (9) offers positioning hole, and half of positioning bead (15) embeds in this positioning hole.
7. compact type 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).
8. compact type gear pump according to claim 2 is characterized in that: the place, outer of said protecgulum (10) offers at least two screws (17).
9. compact type gear pump according to claim 1 is characterized in that: be embedded with oilite bushing (12) in the said mounting hole (8), the end of said countershaft (2) is set in the oilite bushing (12).
10. compact type gear pump according to claim 1 is characterized in that: said main shaft (1) and master gear (3) are one-body molded; Said countershaft (2) and pinion (4) are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102961269A CN102767516A (en) | 2012-08-20 | 2012-08-20 | Compact structure type gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102961269A CN102767516A (en) | 2012-08-20 | 2012-08-20 | Compact structure type gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767516A true CN102767516A (en) | 2012-11-07 |
Family
ID=47095032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102961269A Pending CN102767516A (en) | 2012-08-20 | 2012-08-20 | Compact structure type gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767516A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761997A (en) * | 2019-10-28 | 2020-02-07 | 无锡博伊特科技股份有限公司 | Micro-magnetic gear circulating pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392798A (en) * | 1981-04-03 | 1983-07-12 | General Signal Corporation | Gear pump or motor with low pressure bearing lubrication |
| CN201180643Y (en) * | 2008-02-29 | 2009-01-14 | 徐州科源液压有限公司 | High-pressure gear pump with pressure compensation function |
| CN201599187U (en) * | 2010-01-26 | 2010-10-06 | 东莞市神煜机械有限公司 | External gear pump |
| CN202833126U (en) * | 2012-08-20 | 2013-03-27 | 东莞市神煜机械有限公司 | Compact-structure type gear pump |
-
2012
- 2012-08-20 CN CN2012102961269A patent/CN102767516A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392798A (en) * | 1981-04-03 | 1983-07-12 | General Signal Corporation | Gear pump or motor with low pressure bearing lubrication |
| CN201180643Y (en) * | 2008-02-29 | 2009-01-14 | 徐州科源液压有限公司 | High-pressure gear pump with pressure compensation function |
| CN201599187U (en) * | 2010-01-26 | 2010-10-06 | 东莞市神煜机械有限公司 | External gear pump |
| CN202833126U (en) * | 2012-08-20 | 2013-03-27 | 东莞市神煜机械有限公司 | Compact-structure type gear pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761997A (en) * | 2019-10-28 | 2020-02-07 | 无锡博伊特科技股份有限公司 | Micro-magnetic gear circulating pump |
| CN110761997B (en) * | 2019-10-28 | 2024-05-03 | 无锡博伊特科技股份有限公司 | Micro magnetic gear circulating pump |
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Application publication date: 20121107 |