CN203189262U - Gear pump for excavator - Google Patents
Gear pump for excavator Download PDFInfo
- Publication number
- CN203189262U CN203189262U CN 201320121326 CN201320121326U CN203189262U CN 203189262 U CN203189262 U CN 203189262U CN 201320121326 CN201320121326 CN 201320121326 CN 201320121326 U CN201320121326 U CN 201320121326U CN 203189262 U CN203189262 U CN 203189262U
- Authority
- CN
- China
- Prior art keywords
- gear
- shaft
- driving shaft
- driven
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a gear pump for an excavator. The technical scheme is characterized in that the gear pump for the excavator comprises a pump body, a front cover, a rear cover, a driving shaft, a driven shaft, a driving gear and a driven gear, wherein the pump body, the front cover and the rear cover form a closed accommodating cavity; the driving gear and the driven gear are accommodated in the accommodating cavity in a manner of being meshed with each other and are respectively arranged on the driving shaft and the driven shaft; the driven shaft is arranged in the accommodating cavity; a through mounting hole is formed in the rear cover; the driving shaft partially penetrates through the mounting hole and is exposed out of the accommodating cavity; grooves are formed in the rear cover and correspond to the mounting hole; rotating shaft lip-shaped sealing rings are arranged in the grooves; and the rear cover and the driving shaft are both in clearance fit with the rotating shaft lip-shaped sealing rings. According to the technical scheme, the rotating shaft lip-shaped sealing rings are additionally arranged on matched parts of the driving shaft and the mounting hole, so that the problem that liquid to be conveyed by the gear pump leaks from the matched parts is effectively solved, and loss of fluid is avoided; and the running efficiency of the gear pump is guaranteed.
Description
Technical field
The utility model relates to a kind of gear pump, and more particularly, it relates to a kind of excavator gear pump.
Background technique
Gear pump is to rely on two or more gears that are sealed in the housing, the working space volume-variation that produces in the process of being meshing with each other is carried the pump of liquid, namely is to rely on formed swept volume variation and the mobile rotary pump of carrying liquid or making it supercharging between pumping cylinder and engaging gear.Form two enclosed spaces by two gears, the pump housing and front and rear covers, when gear rotates, the volume in the space of the side that is out of gear is big from little change, form vacuum, liquid is sucked, and the volume in the space of gear engagement side is from diminishing greatly, goes in the pipeline and liquid clamp-oned, suction chamber and discharge side separate by two gear meshing lines, and the pressure of the exhaust port of gear pump depends on the size that pumps place's resistance fully.
At present, excavator gear pump on the market, generally include the pump housing, protecgulum, bonnet, driving shaft, driven shaft, driving gear and driven gear, close cavity of the common formation of the pump housing, protecgulum and bonnet, driving gear and driven gear place in the cavity volume with being meshing with each other and are installed in respectively on driving shaft and the driven shaft, driven shaft places in the cavity volume, after be covered with the mounting hole of perforation, driving shaft partly passes mounting hole and is placed on outside the cavity volume, and driving shaft and mounting hole shape size are all suitable.Because driving shaft and mounting hole directly cooperate, because there is the gap unavoidably in the problem of processing and assembling between the two, the liquid that needs to carry by gear pump just may be revealed from this gap location, causes fluid loss, reduces the operational efficiency of gear pump.
The model utility content
At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of excavator gear pump that can effectively avoid fluid loss, reduce the operational efficiency of gear pump.
For achieving the above object, the utility model provides following technological scheme: a kind of excavator gear pump, comprise the pump housing, protecgulum, bonnet, driving shaft, driven shaft, driving gear and driven gear, the described pump housing, close cavity of the common formation of protecgulum and bonnet, driving gear and driven gear place in the cavity volume with being meshing with each other and are installed in respectively on driving shaft and the driven shaft, driven shaft places in the cavity volume, after be covered with the mounting hole of perforation, driving shaft partly passes mounting hole and is placed on outside the cavity volume, the corresponding mounting hole of described bonnet place is provided with groove, be provided with rotary shaft lip seal in the groove, bonnet, driving shaft all forms interference fit with rotary shaft lip seal.
By adopting technique scheme, position in that driving shaft and mounting hole cooperate has added rotary shaft lip seal, needing can effectively to prevent from the liquid carried by gear pump just, reveal from this matching part, avoid fluid loss, guarantee the operational efficiency of gear pump.
The utility model further is set to: the both sides of the corresponding driving gear of described driving shaft all are arranged with the driving shaft axle sleeve, and driving shaft axle sleeve outer circumferential face is sheathed driving shaft supporting sleeve all; The both sides of the corresponding driven gear of described driven shaft all are arranged with the driven shaft axle sleeve, and driven shaft axle sleeve outer circumferential face is sheathed driven shaft supporting sleeve all.
By adopting technique scheme; set up axle sleeve and supporting sleeve at driving shaft and driven shaft; the liquid of carrying when gear pump is corrosive liquids or when having too much impurity, axle sleeve and supporting sleeve just can effectively protect driving shaft and driven shaft, avoid impurity in the liquid enter gear and spool between matching gap.
The utility model further is set to: described protecgulum and the pump housing, bonnet and pump housing joint are equipped with seal ring.
By adopting technique scheme, setting up of seal ring can be strengthened the sealability of cavity volume inside, improves the rationality of structure.
Description of drawings
Fig. 1 is the structural representation of the utility model excavator with gear pump embodiment;
Fig. 2 is that the C-C of Fig. 1 is to sectional view.
Embodiment
Be described further with gear pump embodiment referring to figs. 1 through the utility model excavator of Fig. 2.
A kind of excavator gear pump, comprise the pump housing 1, protecgulum 2, bonnet 3, driving shaft 4, driven shaft 5, driving gear 6 and driven gear 7, the described pump housing 1, protecgulum 2 and close cavity of bonnet 3 common formations, driving gear 6 and driven gear 7 place in the cavity volume with being meshing with each other and are installed in respectively on driving shaft 4 and the driven shaft 5, driven shaft 5 places in the cavity volume, bonnet 3 is provided with the mounting hole of perforation, driving shaft 4 parts are passed mounting hole and are placed on outside the cavity volume, described bonnet 3 corresponding mounting hole places are provided with groove 32, be provided with rotary shaft lip seal 8 in the groove 32, bonnet 3, driving shaft 4 all forms interference fit with rotary shaft lip seal 8.
By adopting technique scheme, position in that driving shaft 4 and mounting hole cooperate has added rotary shaft lip seal 8, needing can effectively to prevent from the liquid carried by gear pump just, reveal from this matching part, avoid fluid loss, guarantee the operational efficiency of gear pump.
The both sides of described driving shaft 4 corresponding driving gears 6 all are arranged with driving shaft axle sleeve 41,42, and driving shaft axle sleeve 41,42 outer circumferential faces are sheathed driving shaft supporting sleeve 43,44 all; The both sides of described driven shaft 5 corresponding driven gears 7 all are arranged with driven shaft axle sleeve 51,52, and driven shaft axle sleeve 51,52 outer circumferential faces are sheathed driven shaft supporting sleeve 53,54 all.
By adopting technique scheme; set up axle sleeve and supporting sleeve at driving shaft 4 and driven shaft 5; the liquid of carrying when gear pump is corrosive liquids or when having too much impurity, axle sleeve and supporting sleeve just can effectively protect driving shaft 4 and driven shaft 5, avoid impurity in the liquid enter gear and spool between matching gap.
Described protecgulum 2 is equipped with seal ring 9 with the pump housing 1, bonnet 3 with the pump housing 1 joint.
By adopting technique scheme, setting up of seal ring 9 can be strengthened the sealability of cavity volume inside, improves the rationality of structure.
Claims (3)
1. excavator gear pump, comprise the pump housing, protecgulum, bonnet, driving shaft, driven shaft, driving gear and driven gear, the described pump housing, close cavity of the common formation of protecgulum and bonnet, driving gear and driven gear place in the cavity volume with being meshing with each other and are installed in respectively on driving shaft and the driven shaft, driven shaft places in the cavity volume, after be covered with the mounting hole of perforation, driving shaft partly passes mounting hole and is placed on outside the cavity volume, it is characterized in that: the corresponding mounting hole of described bonnet place is provided with groove, be provided with rotary shaft lip seal in the groove, bonnet, driving shaft all forms interference fit with rotary shaft lip seal.
2. excavator gear pump according to claim 1 is characterized in that: the both sides of the corresponding driving gear of described driving shaft all are arranged with the driving shaft axle sleeve, and driving shaft axle sleeve outer circumferential face is sheathed driving shaft supporting sleeve all; The both sides of the corresponding driven gear of described driven shaft all are arranged with the driven shaft axle sleeve, and driven shaft axle sleeve outer circumferential face is sheathed driven shaft supporting sleeve all.
3. excavator gear pump according to claim 2, it is characterized in that: described protecgulum and the pump housing, bonnet and pump housing joint are equipped with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121326 CN203189262U (en) | 2013-03-15 | 2013-03-15 | Gear pump for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121326 CN203189262U (en) | 2013-03-15 | 2013-03-15 | Gear pump for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189262U true CN203189262U (en) | 2013-09-11 |
Family
ID=49106125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121326 Expired - Fee Related CN203189262U (en) | 2013-03-15 | 2013-03-15 | Gear pump for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757440A (en) * | 2018-05-25 | 2018-11-06 | 西北工业大学 | A kind of fixing bearing component for gear pump |
-
2013
- 2013-03-15 CN CN 201320121326 patent/CN203189262U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757440A (en) * | 2018-05-25 | 2018-11-06 | 西北工业大学 | A kind of fixing bearing component for gear pump |
| CN108757440B (en) * | 2018-05-25 | 2020-06-30 | 西北工业大学 | Fixed bearing assembly for gear pump |
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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: 20130911 Termination date: 20150315 |
|
| EXPY | Termination of patent right or utility model |