CN203978822U - A kind of gear pump end cap - Google Patents
A kind of gear pump end cap Download PDFInfo
- Publication number
- CN203978822U CN203978822U CN201420276809.2U CN201420276809U CN203978822U CN 203978822 U CN203978822 U CN 203978822U CN 201420276809 U CN201420276809 U CN 201420276809U CN 203978822 U CN203978822 U CN 203978822U
- Authority
- CN
- China
- Prior art keywords
- arc
- seal area
- axis hole
- shaped side
- seal
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a kind of gear pump end cap, comprise: pump cover body, all about the symmetrically arranged a pair of axis hole of the pump cover pump housing, a pair of oilhole, pump cover body is provided with the seal area that is less than all the other pump cover body portions around above-mentioned axis hole and thickness, in above-mentioned seal area, be disposed with from inside to outside the backup ring and the seal ring that surround axis hole, the above-mentioned outer periphery that is positioned at the seal area in two axis hole outsides is provided with a plurality of depressed parts to outside, seal area depression.The beneficial effects of the utility model are, thereby solved seal ring fracture, are because the phenomenon rupturing at high temperature condition lower seal expanded by heating intermediate portion.
Description
Technical field
The utility model relates to a kind of gear pump end cap, is mainly used in the technical field of fork truck oil pump.
Background technique
Fork truck is industrial transportation vehicle, refer to member pallet cargo load and unload, the various wheeled carrying vehicle of stacking and short distance hauling operation.According to current fork truck required drive for the fork truck oil pump of fork truck normally used be gear-type oil pump.
At present, the overwhelming majority is for the gear-type oil pumps of fork truck, by the structures shape of pump cover the seal ring that uses be the seal ring of " 3 " font.In the practical application of gear-type oil pump, rate of fault is larger, by disassembling, analyzes a large amount of fault pumps, and the failure mode major part of finding this kind of fork truck main pump is all seal ring fracture, causes height nip to be ganged up, and whole pump can not set up pressure.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of pump cover, thereby solved seal ring fracture, is because the phenomenon rupturing at high temperature condition lower seal expanded by heating intermediate portion.
The utility model is achieved through the following technical solutions.
A kind of gear pump end cap, comprise: pump cover body, all about the symmetrically arranged a pair of axis hole of the pump cover pump housing, a pair of oilhole, pump cover body is provided with the seal area that is less than all the other pump cover body portions around above-mentioned axis hole and thickness, in above-mentioned seal area, be disposed with from inside to outside the backup ring and the seal ring that surround axis hole, the above-mentioned outer periphery that is positioned at the seal area in two axis hole outsides is provided with a plurality of depressed parts to outside, seal area depression.
Further, above-mentioned depressed part forms by three arc-shaped sides, be designated as respectively the first arc-shaped side, the second arc-shaped side, three-arc-side, the central angle of above-mentioned the second arc-shaped side is positioned on the second arc-shaped side mid point and the axis hole line of centres, above-mentioned the first arc-shaped side and three-arc-side are symmetrical about above-mentioned the second arc-shaped side, and above-mentioned the first arc-shaped side, three-arc-side are connected with the second adjacent arc-shaped side, the equal circular arc in outer periphery of seal area.
Further, between above-mentioned adjacent recessed portion equidistantly.
Further, the outside of above-mentioned seal ring and the outer periphery of above-mentioned seal area offset.
Seal ring fracture is because at high temperature condition lower seal expanded by heating, and seal ring can only discharge from central closing after expanding in former part, causes this point amount of deformation excessive and rupture.
The beneficial effects of the utility model:
By the outer periphery in seal area, depressed part is set, makes seal ring after expansion, can enter depressed part and obtain earth pressure release, solved seal ring under condition of high voltage after expanded by heating pressure compared with concentrating on greatly seal ring intermediate section, there is the situation of fracture.Meanwhile, had the existence of depressed part, made very close to each otherly between the outside of seal ring and the outer periphery of seal area to have obtained realization, due to pump cover, seal ring must, therefore can prevent that seal ring from easily dropping when assembling down during due to assembling.
Accompanying drawing explanation
Fig. 1 is the structural representation that the implementation case gear pump end cap does not have fitting tight circle and backup ring;
Fig. 2 is the structural representation of the implementation case gear pump end cap fitting tight circle and backup ring;
Fig. 3 is the local enlarged diagram of Fig. 2 A part.
Embodiment
According to drawings and embodiments the utility model is described in further detail below.
Fig. 1 is the structural representation that the implementation case gear pump end cap does not have fitting tight circle and backup ring, Fig. 2 is the structural representation of the implementation case gear pump end cap fitting tight circle and backup ring, with reference to Fig. 1, Fig. 2, the utility model, gear pump end cap, comprise: pump cover body 1, all about the symmetrically arranged a pair of axis hole 11 of the pump cover pump housing, a pair of oilhole 12, pump cover body 1 is provided with the seal area 13 that is less than all the other pump cover body 1 parts around above-mentioned axis hole 11 and thickness.
In seal area 13, be disposed with from inside to outside the backup ring 2 and the seal ring 3 that surround axis hole 11, the outer periphery 131 that is positioned at the seal area 13 in two axis hole 11 outsides is provided with a plurality of depressed parts 132 that cave in 13 outsides to seal area.
Fig. 3 is the local enlarged diagram of Fig. 2 A part, with reference to Fig. 3 and in conjunction with Fig. 1, Fig. 2, depressed part 132 forms by three arc-shaped sides, be designated as respectively the first arc-shaped side a, the second arc-shaped side b, three-arc-side c, the central angle of the second arc-shaped side b is positioned on the second arc-shaped side b mid point and the axis hole line of centres, above-mentioned the first arc-shaped side and three-arc-side are symmetrical about above-mentioned the second arc-shaped side, guarantee that each depressed part 132 all points to axis hole 11 center, make the seal ring 3 after being heated when depressed part 132 expands, be subject to expansion symmetrically, the first arc-shaped side a, three-arc-side c and adjacent the second arc-shaped side b, the equal circular arc in outer periphery 131 of seal area 13 connects, guarantee that seal ring 3 is when being heated to depressed part 132 expansion, be subject to the first arc-shaped side a, the pressure of three-arc-side c is comparatively even, the seal ring damage that is difficult for causing single-point overpressure and produces.
Between adjacent recessed portion 132, equidistantly, make seal ring 3 comparatively even when being heated to depressed part 132 expansion.
The quantity of depressed part and between spacing according to situations such as concrete pump cover size, heating temperatures, set.
Conventionally, the angle of adjacent recessed portion mid point and the axis hole line of centres is at 8 °～12 °, and in the implementation case, angle is set as 10 °; Depressed part arranges 14～18, and in the implementation case, depressed part arranges 16.
In the implementation case, the outside of seal ring 3 and the outer periphery of above-mentioned seal area 131 offset, in the oil pump using in tradition, conventionally require to set certain interval between seal ring and the outer periphery of seal area, but due to this pump cover when mounted face towards below, the phenomenon that seal ring comes off easily occurs while installing, and arranging of depressed part solved this contradiction.
The utility model, gear pump end cap, by the outer periphery in seal area, depressed part is set, makes seal ring after expansion, can enter depressed part and obtain earth pressure release, solved seal ring under condition of high voltage after expanded by heating pressure compared with concentrating on greatly seal ring intermediate section, there is the situation of fracture.Meanwhile, had the existence of depressed part, made very close to each otherly between the outside of seal ring and the outer periphery of seal area to have obtained realization, due to pump cover, seal ring must, therefore can prevent that seal ring from easily dropping when assembling down during due to assembling.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow the personage who is familiar with this art can understand the utility model content and be implemented, and can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (4)
1. a gear pump end cap, comprise: pump cover body, all about the symmetrically arranged a pair of axis hole of the pump cover pump housing, a pair of oilhole, pump cover body is provided with the seal area that is less than all the other pump cover body portions around described axis hole and thickness, in described seal area, be disposed with from inside to outside the backup ring and the seal ring that surround axis hole, it is characterized in that, described in be positioned at the seal area in two axis holes outside outer periphery be provided with a plurality of depressed parts to outside, seal area depression.
2. gear pump end cap according to claim 1, it is characterized in that, described depressed part forms by three arc-shaped sides, be designated as respectively the first arc-shaped side, the second arc-shaped side, three-arc-side, the central angle of described the second arc-shaped side is positioned on the second arc-shaped side mid point and the axis hole line of centres, described the first arc-shaped side and three-arc-side are symmetrical about described the second arc-shaped side, and described the first arc-shaped side, three-arc-side are connected with the second adjacent arc-shaped side, the equal circular arc in outer periphery of seal area.
3. gear pump end cap according to claim 1 and 2, is characterized in that, between described adjacent recessed portion equidistantly.
4. gear pump end cap according to claim 1 and 2, is characterized in that, the outside of described seal ring and the outer periphery of described seal area offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276809.2U CN203978822U (en) | 2014-05-27 | 2014-05-27 | A kind of gear pump end cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276809.2U CN203978822U (en) | 2014-05-27 | 2014-05-27 | A kind of gear pump end cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978822U true CN203978822U (en) | 2014-12-03 |
Family
ID=51976274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420276809.2U Withdrawn - After Issue CN203978822U (en) | 2014-05-27 | 2014-05-27 | A kind of gear pump end cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967783A (en) * | 2014-05-27 | 2014-08-06 | 合肥力威汽车油泵有限公司 | Gear pump end cover |
-
2014
- 2014-05-27 CN CN201420276809.2U patent/CN203978822U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967783A (en) * | 2014-05-27 | 2014-08-06 | 合肥力威汽车油泵有限公司 | Gear pump end cover |
| CN103967783B (en) * | 2014-05-27 | 2019-01-15 | 合肥力威汽车油泵有限公司 | A kind of gear pump end cap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201941513U (en) | Tubeless engineering wheel | |
| CN203978822U (en) | A kind of gear pump end cap | |
| CN205069727U (en) | Rupture disk and end cover for lithium cell | |
| CN103967783A (en) | Gear pump end cover | |
| CN104495701A (en) | Height-adjustable balance wheel structure | |
| CN209071505U (en) | A kind of battery cap and lithium battery | |
| CN203868528U (en) | Sealing structure for extension of signal line of low-temperature gas tank | |
| CN203604743U (en) | Aircraft cabin internal valve | |
| CN203600883U (en) | Automobile wheel | |
| CN103386861B (en) | Improvement structure of inflation-free tyre | |
| CN204193915U (en) | Tower equipment skirt cylindrical shell | |
| CN203161751U (en) | Expansion bolt | |
| CN203686289U (en) | Breaking valve | |
| CN103600621A (en) | Engineering truck wheel | |
| CN203585319U (en) | Leakage-proof bonded washer | |
| CN105034683A (en) | Wheel hub of electric vehicle | |
| CN103615538A (en) | Leakage-proof bonded washer | |
| CN203727093U (en) | Engineering truck wheel | |
| CN208164654U (en) | A kind of three-piece wheel structure | |
| CN204026143U (en) | The plate blasting piece device of liquid phase | |
| CN203242686U (en) | Storage battery looseness preventing type safety valve | |
| CN203363340U (en) | Main valve body and auxiliary valve body hard limiting structure | |
| CN202048188U (en) | Sealing ring for liner mouth | |
| CN205196174U (en) | Casting casing | |
| CN105508769A (en) | Sealing flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20190111 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20190115 |
|
| AV01 | Patent right actively abandoned |