CN203285677U - Hydraulic gear pump - Google Patents
Hydraulic gear pump Download PDFInfo
- Publication number
- CN203285677U CN203285677U CN2013202555890U CN201320255589U CN203285677U CN 203285677 U CN203285677 U CN 203285677U CN 2013202555890 U CN2013202555890 U CN 2013202555890U CN 201320255589 U CN201320255589 U CN 201320255589U CN 203285677 U CN203285677 U CN 203285677U
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- oil
- oil outlet
- cavity
- gear
- chamber
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Abstract
The utility model relates to a hydraulic gear pump, which comprises a pump body, wherein a gear assemblies meshed mutually and used for transporting oil are placed in the primary chamber of the pump body, a piston cavity, an oil outlet cavity, an oil return cavity and an oil inlet cavity are formed in one side of the primary chamber, one end of the piston cavity, the inner end of the oil outlet cavity and the inner end of the oil return cavity are communicated mutually through a passage, the oil inlet cavity is connected with the other end of the piston cavity, a reversing piston is arranged in the piston cavity, a first one-way oil outlet valve assembly is mounted at the oil outlet cavity, an oil outlet is connected with the oil outlet cavity, the first one-way oil outlet valve assembly controls the communication or cutting of the oil line from the inner end of the oil outlet cavity to the oil outlet, a second one-way oil outlet valve assembly is arranged at the oil return cavity, and a one-way oil inlet valve assembly is arranged at the oil inlet cavity; a pump cavity in one side of the gear assembly is communicated with the oil inlet cavity, and a pump cavity in the other side of the gear assembly is communicated with the oil outlet cavity. The hydraulic gear pump has the advantages that a reversing device is integrated with a rear cover of the hydraulic gear pump, so that the size of the gear pump can be efficiently reduced, and meanwhile, the assembly is easier; the effects of safety and reliability are realized, and the practicality is excellent.
Description
Technical field
The utility model belongs to the gear pump technical field, be specifically related to a kind of can be as the hydraulic gear pump of the dynamical element of single-action hydraulic cylinder jack.
Background technique
The jack of vehicle carried type has many types, wherein, and better hydraulic type jack, it is driven by the motor driven gear pump, and in prior art, known gear pump is not integrated reversing arrangement mostly, the external installation of its reversing arrangement and cause the jack on vehicle overall volume huge, be unfavorable for carrying.
Summary of the invention
In order to overcome above shortcomings part in prior art, it is a kind of by the pressure controlled hydraulic gear pump that is integrated with reversing arrangement that the purpose of this utility model is to provide.
In order to reach above-mentioned purpose, the utility model adopts following concrete technological scheme:
a kind of hydraulic gear pump, comprise the pump housing, be mounted with the gear assembly that intermeshes to carry out oil transportation in the main chamber of the pump housing, one side in main chamber is provided with piston cavity, go out oil pocket, oil back chamber and oil suction chamber, wherein, one end of piston cavity, go out oil pocket the inner, oil back chamber the inner interconnects by Kong Lu, the other end of piston cavity is connected with oil suction chamber, be provided with reversing piston in piston cavity, go out the oil pocket place the first unidirectional oil outlet valve component is installed, describedly go out oil pocket and be connected with oil outlet, the first unidirectional oil outlet valve component is controlled out oil pocket the inner to the oil circuit conducting of oil outlet or is blocked, the oil back chamber place is provided with the second unidirectional oil outlet valve component, the oil suction chamber place is provided with unidirectional oiling valve assembly, the pump chamber of described gear assembly one side is communicated with described oil suction chamber, the pump chamber of opposite side with go out oil pocket and be communicated with.
Further, be provided with the projection of backing down the first unidirectional oil outlet valve component on described reversing piston.
Further, the described pump housing is comprised of protecgulum and bonnet, described piston cavity and go out oil pocket and be arranged on bonnet, and oil back chamber and oil suction chamber are arranged on protecgulum.
Further, what the described second unidirectional oil outlet valve component can bear goes out oil pressure greater than the first unidirectional oil outlet valve component, and the second unidirectional oil outlet valve component is comprised of plug, spring and steel ball, and plug is screwed onto in oil back chamber.
Further, the described first unidirectional oil outlet valve component comprises spring, steel ball and plug; Described oil outlet is arranged on out on the sidewall of oil pocket.
Further, the return unit of described unidirectional oiling valve assembly is the circular cone Compress Spring.
Further, described gear assembly is comprised of driving gear and driven gear, driving gear and driven gear form by axle and gear, one side at axle middle part and the inboard of gear are provided with the groove of working in coordination, be provided with in groove and make both synchronous steel balls that rotates, all be set with on the axle of gear both sides be used to the Steel Cable Baffle Ring of realizing the gear location.
Compared with prior art, the utlity model has following outstanding advantages and effect:
Be integrated with reversing arrangement on bonnet of the present utility model, can effectively reduce the volume of gear pump, simultaneously, make assembling more simple, safe and reliable, practicability is good.
Description of drawings
Fig. 1 is explosive view of the present utility model.
Fig. 2 is one of structural representation of the present utility model.
Fig. 3 is two of structural representation of the present utility model.
Fig. 4 is three of structural representation of the present utility model.
Fig. 5 is the schematic diagram of bonnet of the present utility model.
Fig. 6 is the schematic diagram of driving gear of the present utility model.
Fig. 7 is the schematic diagram of protecgulum of the present utility model.
In figure: 1, plug; 2, O type circle; 3, reversing piston; 4, circular cone Compress Spring; 5, steel ball; 6, protecgulum; 7, hexagon socket cap head screw; 8, plug; 9, spring; 10, steel ball; 11, driven gear; 12, driving gear; 13, bonnet; 14, steel ball; 15, spring; 16, O type circle; 17, plug; 18, projection; 19, steel ball; 20, Steel Cable Baffle Ring; 21, gear; 22, axle; 23, spill port; 24, oil outlet; 25, oil through; 26, oil through;
Driving gear installation position on a, protecgulum; Driven gear installation position on b, protecgulum; C, pressure-releasing chamber; D, oil suction chamber; Driving gear installation position on e, bonnet; Driven gear installation position on f, bonnet; G, go out oil pocket; H, piston cavity; I, compensated cavity.
Embodiment
as shown in Fig. 1-7, a kind of hydraulic gear pump, comprise the pump housing, be mounted with the gear assembly that intermeshes to carry out oil transportation in the main chamber of the pump housing, one side in main chamber is provided with piston cavity h, go out oil pocket g, pressure-releasing chamber c and oil suction chamber d, wherein, the end of piston cavity h (right-hand member in Fig. 2), go out oil pocket g inner, pressure-releasing chamber c the inner interconnects (right-hand member of piston cavity h and pressure-releasing chamber c are communicated with by oil through 26) by Kong Lu, left end and oil suction chamber d that the other end of piston cavity h (left end in Fig. 2) is connected with oil suction chamber d(piston cavity h are communicated with by oil through 25), be provided with reversing piston 3 in piston cavity h, going out oil pocket g place is equipped with the first unidirectional oil outlet valve component (the first unidirectional oil outlet valve component comprises plug 17, spring 15 and steel ball 14), the described oil pocket g of going out is connected with oil outlet 24(oil outlet 24 and connects load), the first unidirectional oil outlet valve component is controlled out oil pocket g the inner to the oil circuit conducting of oil outlet 24 or is blocked, pressure-releasing chamber c place is provided with the second unidirectional oil outlet valve component, and (the second unidirectional oil outlet valve component comprises plug 8, spring 9 and steel ball 10), oil suction chamber d place is provided with unidirectional oiling valve assembly (unidirectional oiling valve assembly comprises circular cone Compress Spring 4 and steel ball 5), the pump chamber of described gear assembly one side (being left side in Fig. 2) is communicated with described oil suction chamber d, the pump chamber of opposite side with go out oil pocket g and be communicated with.
Further, be provided with the projection 18 of backing down the first unidirectional oil outlet valve component on described reversing piston 3.
Further, be provided with the oil return apparatus that is communicated with oil suction chamber d on the described pump housing, described oil return apparatus is arranged on the spill port 23 on the wall of piston cavity h, and described spill port and fuel tank are communicated with, and only in gear pump counter-rotating, reversing piston 3 actions just can and compensated cavity i be communicated with.
Further, the described pump housing is comprised of protecgulum 6 and bonnet 13, described piston cavity h and go out oil pocket g and be arranged on bonnet 13, and pressure-releasing chamber c and oil suction chamber d are arranged on protecgulum 6.
Further, be provided with on described protecgulum and the pressure relief device that goes out oil pocket g and be communicated with, described pressure relief device is exactly the described second unidirectional oil outlet valve component, the second unidirectional oil outlet valve component is comprised of plug 8, spring 9 and steel ball, plug is screwed onto in pressure-releasing chamber c, the oil pressure that goes out that the described second unidirectional oil outlet valve component can bear is far longer than the first unidirectional oil outlet valve component, plays the effect (the pressure release value of this relief valve is equal to the maximum oil pressure that load can bear) of relief valve.
Further, the described first unidirectional oil outlet valve component comprises spring 15, steel ball 18 and plug 17; Described oil outlet 24 is arranged on out on the sidewall of oil pocket g.
Further, the return unit of described unidirectional oiling valve assembly is circular cone Compress Spring 4.
Further, described gear assembly is comprised of driving gear 12 and driven gear 11, driving gear 12 and driven gear 11 form by axle 22 and gear, one side at axle 22 middle parts and the inboard of gear are provided with the groove of working in coordination, be provided with in groove and make both synchronous steel balls that rotates, all be set with on the axle 22 of gear both sides be used to the Steel Cable Baffle Ring 20 of realizing the gear location.
Working principle of the present utility model:
during the motor forward (in Fig. 1, driving gear 12 clockwise rotates), gear assembly is delivered to pressure-releasing chamber c(oil suction chamber d oil pressure with the oil in oil suction chamber d to be reduced, the steel ball 5 of unidirectional oiling valve assembly is by extraneous oil pressure jack-up, oil pressure in pressure-releasing chamber c raises, the steel ball 14 of the first unidirectional oil outlet valve component is backed down (the second unidirectional oil outlet valve component can bear go out oil pressure greater than the first unidirectional oil outlet valve component), fluid enters oil outlet 24(oil outlet 24 and connects load), along with the continuous increase that goes out oil pressure, when going out oil pressure and reach the force value that pressure-releasing chamber sets, the steel ball 10 of the second unidirectional oil outlet valve component is backed down by oil pressure, fluid connects load from oil outlet 24() hole (this hole connected tank) of flowing out plug 8 middle parts carries out oil extraction, play the effect of safety valve,
during motor reversal (in Fig. 1, driving gear 12 rotates counterclockwise), gear assembly is delivered to oil suction chamber d with the oil in pressure-releasing chamber c, due to unidirectional oiling valve assembly reverse obstructed oil this moment, oil pressure in oil suction chamber d is increased, reversing piston 3 moves to right gradually, the projection 18 on reversing piston 3 right sides is backed down the steel ball 14 of the first unidirectional oil outlet valve component, at this moment, oil suction chamber d and spill port 23 conductings, realize that oil return arrives fuel tank, oil outlet 24 to pressure-releasing chamber c the oil circuit conducting, make the pressure-releasing chamber can be constantly from oil outlet 24 oil suctions, then, gear assembly passes through constantly pressure-releasing chamber from oil outlet 24 oil suctions and passes through oil suction chamber d from oil back chamber 23 oil extractions to fuel tank.Go round and begin again, with the oil in the connected load of oil outlet 24, will get back to fuel tank.
When motor stopped, steel ball 14 pressurizeds were also closed the first unidirectional oil outlet valve component, play the effect of pressurize.
The design of compensated cavity i and reversing piston 3 left end projections is to block oil through 25 for the sidewall that prevents plug 1 and reversing piston 3.
Driving gear 12 of the present utility model is consistent with driven gear 11, and equal being arranged in the pump housing without bearing.
It should be noted that finally: above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (7)
1. hydraulic gear pump, it is characterized in that: comprise the pump housing, be mounted with the gear assembly that intermeshes to carry out oil transportation in the main chamber of the pump housing, one side in main chamber is provided with piston cavity, go out oil pocket, pressure-releasing chamber, opposite side is provided with oil suction chamber, compensated cavity, oil back chamber, wherein, one end of piston cavity, go out oil pocket the inner, pressure-releasing chamber the inner interconnects by Kong Lu, the other end of piston cavity is communicated with oil suction chamber, compensated cavity, oil back chamber, be provided with reversing piston in piston cavity, go out the oil pocket place the first unidirectional oil outlet valve component is installed, describedly go out oil pocket and be connected with oil outlet and connect load, the first unidirectional oil outlet valve component is controlled out oil pocket the inner to the oil circuit conducting of oil outlet or is blocked, described pressure-releasing chamber place is provided with the second unidirectional oil outlet valve component, controls the pressure of oil outlet, and the oil suction chamber place is provided with unidirectional oiling valve assembly, the pump chamber of described gear assembly one side is communicated with described oil suction chamber, the pump chamber of opposite side with go out oil pocket and be communicated with.
2. a kind of hydraulic gear pump according to claim 1, is characterized in that: be provided with the projection of backing down the first unidirectional oil outlet valve component on described reversing piston.
3. a kind of hydraulic gear pump according to claim 1, it is characterized in that: the described pump housing is comprised of protecgulum and bonnet, described piston cavity, goes out oil pocket and oil back chamber is arranged on bonnet, and pressure-releasing chamber and oil suction chamber are arranged on protecgulum.
4. a kind of hydraulic gear pump according to claim 1, it is characterized in that: what the described second unidirectional oil outlet valve component can bear goes out oil pressure greater than the first unidirectional oil outlet valve component, corresponding with the working pressure that load is corresponding; The second unidirectional oil outlet valve component is comprised of plug, spring and steel ball, and plug is screwed onto in oil back chamber.
5. a kind of hydraulic gear pump according to claim 1, it is characterized in that: the described first unidirectional oil outlet valve component comprises spring, steel ball and plug; Described oil outlet is arranged on out on the sidewall of oil pocket.
6. a kind of hydraulic gear pump according to claim 1, it is characterized in that: the return unit of described unidirectional oiling valve assembly is the circular cone Compress Spring.
7. a kind of hydraulic gear pump according to claim 1, it is characterized in that: described gear assembly is comprised of driving gear and driven gear, driving gear and driven gear form by axle and gear, one side at axle middle part and the inboard of gear are provided with the groove of working in coordination, be provided with in groove and make both synchronous steel balls that rotates, all be set with on the axle of gear both sides be used to the Steel Cable Baffle Ring of realizing the gear location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202555890U CN203285677U (en) | 2013-05-13 | 2013-05-13 | Hydraulic gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202555890U CN203285677U (en) | 2013-05-13 | 2013-05-13 | Hydraulic gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285677U true CN203285677U (en) | 2013-11-13 |
Family
ID=49542043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202555890U Expired - Fee Related CN203285677U (en) | 2013-05-13 | 2013-05-13 | Hydraulic gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203285677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ307543B6 (en) * | 2017-06-08 | 2018-11-21 | Emil Brabec | A piston pump for liquids, especially for more viscous and pastelike media |
-
2013
- 2013-05-13 CN CN2013202555890U patent/CN203285677U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ307543B6 (en) * | 2017-06-08 | 2018-11-21 | Emil Brabec | A piston pump for liquids, especially for more viscous and pastelike media |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20150513 |
|
| EXPY | Termination of patent right or utility model |