CN211082240U - High-pressure gear pump and bearing assembly thereof - Google Patents
High-pressure gear pump and bearing assembly thereof Download PDFInfo
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- CN211082240U CN211082240U CN201921904900.3U CN201921904900U CN211082240U CN 211082240 U CN211082240 U CN 211082240U CN 201921904900 U CN201921904900 U CN 201921904900U CN 211082240 U CN211082240 U CN 211082240U
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Abstract
The utility model discloses a high pressure gear pump and bearing assembly thereof, bearing assembly are including the axle sleeve that is equipped with outer oilhole, and outer oilhole extends to the inside wall from the lateral wall of axle sleeve, and the inside bearing that is used for establishing with the pivot cover of high pressure gear pump of being equipped with of axle sleeve, and the lateral wall of bearing is equipped with interior oilhole, and the aperture of interior oilhole is crescent from the inside wall to the lateral wall of bearing. The application provides an interior oilhole of bearing assembly is the structure that expands gradually, and its oil reserve is bigger, consequently can last more for a specified time when breaking down and provide lubricating oil for the gear shaft, reduces the wearing and tearing of gear shaft, improves high-pressure gear pump's life.
Description
Technical Field
The utility model relates to a rotary pump technical field, more specifically say, relate to a bearing assembly. Furthermore, the utility model discloses still relate to a high pressure gear pump including above-mentioned bearing assembly.
Background
The gear serves as a core component of the gear pump and plays a vital role in the operation process of the gear pump. The gear has the characteristics of simple structure, easiness in processing, convenience in detection and the like, so that the gear is widely adopted in the pump. With the development of aerospace technology, the industry puts higher and higher requirements on the rotating speed, pressure, service life and high volumetric efficiency of a gear pump, and the gear is required to be capable of adapting to the limit working conditions of high rotating speed, high pressure and the like.
When the gear pump works, lubricating oil enters a gap between the bearing and the gear shaft through the oil filling holes in the bearing, and a lubricating oil film is established in the gap to prevent the bearing and the gear shaft from being seized due to dry friction.
In actual work, the gear pump can appear the problem of fuel feeding trouble, and lubricating oil supply is not enough this moment, can't provide the lubricating oil of sufficient for the bearing, and then can't ensure the lubricated effect between gear shaft and the bearing, causes the gear shaft wearing and tearing. In addition, because only one oil injection hole is arranged in the bearing, the uniformity of the lubricating oil film distributed in the circumferential direction of the bearing is poor, the lubricating state is inconsistent in the circumferential direction of the gear shaft, and the gear shaft is also abraded.
In summary, those skilled in the art need to solve the above problems by providing stable lubrication oil for a gear system under high pressure and reducing wear of a gear shaft.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a bearing assembly, which can provide lubricating oil for the gap formed between the gear shaft and the bearing assembly under high pressure, reduce the wear of the gear shaft, and prolong the service life of the gear. Another object of the present invention is to provide a high pressure gear pump comprising the above bearing assembly.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a bearing assembly, is including the axle sleeve that is equipped with outer oilhole, outer oilhole is followed the lateral wall of axle sleeve extends to the inside wall, the inside bearing that is used for establishing with the pivot cover of high-pressure gear pump of being equipped with of axle sleeve, the lateral wall of bearing is equipped with interior oilhole, just the aperture of interior oilhole is followed the inside wall of bearing is crescent to the lateral wall.
Preferably, the bearing includes lubricated bearing, for the transition bearing, the bearing for the oil storage that distributes from inside to outside in proper order, and three's lateral wall is equipped with the through-hole respectively, and three's through-hole position corresponds, forms the notch cuttype interior oilhole, the aperture of the through-hole of lubricated bearing the aperture of the through-hole of bearing for the transition the aperture of the through-hole of bearing for the oil storage increases in proper order.
Preferably, the lubricating bearing and the oil storage bearing are in interference fit with the transition bearing respectively, and the oil storage bearing is in interference fit with the shaft sleeve.
Preferably, the lubricating bearing is a high-temperature-resistant self-lubricating bearing.
Preferably, the bearing is provided with at least four inner oil holes, and all the inner oil holes are uniformly distributed along the circumferential direction of the bearing.
Preferably, the shaft sleeve is 8-shaped, and two bearings which are distributed side by side are arranged in the shaft sleeve.
Preferably, the bearing is provided with four of the inner oil holes.
A high pressure gear pump comprising any of the bearing assemblies described above.
The utility model provides a bearing assembly includes axle sleeve and bearing, and wherein, the lateral wall of axle sleeve is equipped with outer oilhole, and the lateral wall of bearing is equipped with interior oilhole, and the aperture of interior oilhole is crescent from the inside wall to the lateral wall of bearing.
The outer oilhole extends to the inside wall of axle sleeve from the high-pressure region of high-pressure gear pump, and interior oilhole runs through the lateral wall of bearing, and when the high-pressure gear pump ran, high-pressure oil was continuous to be sent to the lubrication area between gear shaft and the bearing, provides lubricating oil for the gear shaft. Because the aperture of interior oilhole is from inside to outside crescent, consequently, compare the unchangeable oil filler point in prior art in aperture, the oil reserve of interior oilhole in this application is bigger, and it can compromise the effect of oil storage and runner, and when the high pressure gear pump took place the circumstances such as eccentric operation because of trouble fuel feeding or gear shaft, lubricating oil in the interior oilhole can make the high pressure gear pump can continue to operate for a certain time to ensure the normal work of high pressure gear pump.
The application provides a bearing assembly is provided with the interior oilhole that expands gradually, has increased the oil reserve of interior oilhole, and the clearance that forms for gear shaft and bearing assembly when breaking down lasts provides lubricating oil, reduces the wearing and tearing of gear shaft, improves the life of gear.
The application also provides a high-pressure gear pump, which has the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a bottom view of a bearing assembly;
FIG. 2 is a front view of a bearing assembly;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a bottom view of the bushing;
FIG. 5 is a front view of the bushing;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is a schematic view of a bearing for oil storage;
FIG. 8 is a schematic view of a transition bearing;
fig. 9 is a schematic structural view of a lubricating bearing.
The reference numerals in figures 1 to 9 are:
the bearing comprises a shaft sleeve 1, an oil storage bearing 2, a transition bearing 3, a lubricating bearing 4 and an outer oil hole 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 9, the present application provides a bearing assembly, which includes a shaft sleeve 1 having an outer oil hole 5, the outer oil hole 5 extends from an outer side wall to an inner side wall of the shaft sleeve 1, a bearing for connecting with a rotating shaft sleeve of a high pressure gear pump is disposed inside the shaft sleeve 1, an inner oil hole is disposed on a side wall of the bearing, and a diameter of the inner oil hole gradually increases from the inner side wall to the outer side wall of the bearing.
Specifically, the shaft sleeve 1 is a hollow structure, and provides a mounting position for the bearing. The port of the outer oil hole 5 of the shaft sleeve 1 is positioned in a high-pressure cavity of the high-pressure gear pump and is used for communicating the inner oil hole of the bearing with the high-pressure cavity. Optionally, in order to facilitate the introduction of the lubricating oil from the outer oil hole 5 into the inner oil hole of the bearing, a flow channel which is communicated with the outer oil hole 5 and can be communicated with the inner oil hole of the bearing may be arranged in the circumferential direction of the inner circle of the shaft sleeve 1, so that the lubricating oil can flow into the flow channel for use.
The bearing cup joints in the inside of axle sleeve 1, and when in actual use, the bearing box is established in the periphery of gear shaft simultaneously. The inner oil hole penetrates through the side wall of the bearing, the inner oil hole can achieve the effect that the hole diameter is gradually increased from inside to outside through various structures, and for example, the inner oil hole can be a taper hole or a stepped hole.
In the working process, oil in the high-pressure cavity enters the inner oil hole of the bearing through the outer oil hole 5 of the shaft sleeve 1 and finally enters a space between the bearing and the gear shaft to form a lubricating oil film, so that the lubricating effect of the oil film bearing is achieved. Because the aperture of interior oilhole is crescent from inside to outside, consequently interior oilhole can save more lubricating oil, when the high-pressure gear pump broke down, the lubricating oil of storage in the interior oilhole can continue to operate for a certain time by the high-pressure gear pump to ensure the normal work of high-pressure gear pump.
The application provides a bearing assembly can introduce the clearance that gear shaft and bearing formed with the fluid in high-pressure chamber under highly compressed condition, when the oil feed interruption condition appears suddenly in the high-pressure gear pump, the fluid of storage in interior oilhole and the outer oilhole 5 lubricates the gear shaft, provides good lubricated environment for the gear system, prevents the rotation of mutual dry friction between gear shaft and bearing assembly to reduce the wearing and tearing of gear shaft, improve the life of gear.
Optionally, for the production and processing of convenient bearing, in the embodiment that this application provided, the bearing includes lubricated bearing 4, for the transition bearing 3, for the oil storage bearing 2 that distribute in proper order from inside to outside, and the lateral wall of three is equipped with the through-hole respectively, and the through-hole position of three corresponds, forms interior oilhole, and the aperture of the through-hole of lubricated bearing 4, the aperture of the through-hole of transition bearing 3, the aperture of the through-hole of oil storage bearing 2 increase in proper order.
Specifically, the bearing 2 for oil storage is placed inside the shaft sleeve 1, the bearing 3 for transition is placed inside the bearing 2 for oil storage, and the bearing 4 for lubrication is placed inside the bearing 3 for transition. Through holes are respectively formed in the side walls of the three bearings (the lubricating bearing 4, the transition bearing 3 and the oil storage bearing 2), the hole diameters of the through holes are unequal, and after the three bearings are assembled, the through holes form stepped inner oil holes.
Because the bearing is assembled by three independent bearings, in the actual processing process, the through hole of a single bearing can be independently processed into the through hole with the same diameter without being processed into a conical hole structure, thereby simplifying the processing process of the bearing.
When the high-pressure gear pump operates, high-pressure oil is continuously sent to the lubricating area from the high-pressure cavity to provide lubricating oil for the gear shaft. More specifically, the lubricating oil sequentially enters the outer oil hole 5 of the shaft sleeve 1, the flow passage inside the shaft sleeve 1, the through hole of the oil storage bearing 2, the through hole of the transition bearing 3 and the through hole of the lubricating bearing 4 from the high-pressure cavity, and finally enters the gap between the gear shaft and the inner hole of the combination bearing.
In this in-process, the oil storage is taken into account with bearing 2 for the oil storage and the effect of runner, and when the high pressure gear pump oil supply was interrupted suddenly, fluid among the oil storage tank got into the lubrication area, for the gear shaft provides lubricating oil, prevented to lead to the gear shaft to damage because of dry friction. The transition bearing 3 mainly functions as a flow passage. The lubricating bearing 4 is made of special metal and has the characteristics of high temperature resistance, low friction, self-lubrication and the like, namely the lubricating bearing 4 is made of a high temperature resistant self-lubricating bearing which has the functions of both a flow channel and lubrication, when the high-pressure gear pump supplies oil due to faults or the eccentric operation of a gear shaft and the like, the self-lubricating characteristic can keep the normal operation of the high-pressure gear pump in a short time, and meanwhile, the high temperature resistant characteristic can better adapt to a high temperature lubricating mode.
Optionally, in the actual assembly process, the bearings may be assembled and fixed in various manners, and the embodiment preferably adopts an interference fit manner for fixation. Specifically, the bearing 2 for oil storage is in interference fit with the shaft sleeve 1, the bearing 3 for transition is in interference fit with the bearing 2 for oil storage, and the bearing 3 for transition is in interference fit with the bearing 4 for lubrication.
Further, in order to improve the uniformity of the lubricating oil film, in any of the above embodiments, the bearing is provided with at least four inner oil holes, and all the inner oil holes are uniformly distributed along the circumferential direction of the bearing. Specifically, a plurality of inner oil holes are uniformly distributed on the circumference of the bearing, and compared with the structure of a single oil hole in the prior art, the structure with the uniformly distributed plurality of inner oil holes can meet the condition of oil film lubrication under the high-pressure working condition, so that the bearing assembly is better suitable for the high-pressure working condition. In actual use, it is preferable that the bearing is provided with four inner oil holes in consideration of the fact that two or three inner oil holes easily cause the gear shaft to be eccentric.
Optionally, considering that the high-pressure gear pump generally has a driving gear and a driven gear, in practical use, it is preferable that the shaft sleeve 1 is in an 8 shape, and two bearings are arranged in the shaft sleeve 1 and distributed side by side, and in an assembled state, the two bearings are connected with a gear shaft of the driving gear and a gear shaft of the driven gear in a one-to-one correspondence manner.
In addition to above-mentioned bearing assembly, the utility model also provides a high pressure gear pump including above-mentioned bearing assembly, this high pressure gear pump is owing to used above-mentioned bearing assembly, and the wearing and tearing between gear shaft and the bearing assembly are less, and the life of gear is longer. The structure of other parts of the high-pressure gear pump is referred to the prior art, and is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The high-pressure gear pump and the bearing assembly thereof provided by the utility model are described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. The bearing assembly is characterized by comprising a shaft sleeve (1) provided with an outer oil hole (5), wherein the outer oil hole (5) is extended from the outer side wall of the shaft sleeve (1) to the inner side wall, a bearing used for being connected with a rotating shaft sleeve of a high-pressure gear pump is arranged inside the shaft sleeve (1), an inner oil hole is formed in the side wall of the bearing, and the aperture of the inner oil hole is gradually increased from the inner side wall to the outer side wall of the bearing.
2. The bearing assembly according to claim 1, characterized in that the bearing comprises a lubricating bearing (4), a transition bearing (3) and an oil storage bearing (2) which are distributed in sequence from inside to outside, through holes are respectively formed in the side walls of the lubricating bearing (4), the transition bearing (3) and the oil storage bearing (2), the through holes of the three correspond in position and form a step-shaped oil hole, and the hole diameter of the through hole of the lubricating bearing (4), the hole diameter of the through hole of the transition bearing (3) and the hole diameter of the through hole of the oil storage bearing (2) are increased in sequence.
3. The bearing assembly according to claim 2, characterized in that the lubricating bearing (4) and the oil storage bearing (2) are in interference fit with the transition bearing (3) respectively, and the oil storage bearing (2) is in interference fit with the shaft sleeve (1).
4. A bearing assembly according to claim 3, characterized in that the lubricating bearing (4) is a high temperature resistant self-lubricating bearing.
5. The bearing assembly according to any one of claims 1 to 4, wherein the bearing is provided with at least four of the inner oil holes, and all of the inner oil holes are evenly distributed in a circumferential direction of the bearing.
6. Bearing assembly according to claim 5, wherein the sleeve (1) is 8-shaped, and two bearings are arranged side by side in the sleeve (1).
7. The bearing assembly of claim 6, wherein the bearing is provided with four of the inner oil holes.
8. A high pressure gear pump, comprising a bearing assembly according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921904900.3U CN211082240U (en) | 2019-11-06 | 2019-11-06 | High-pressure gear pump and bearing assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921904900.3U CN211082240U (en) | 2019-11-06 | 2019-11-06 | High-pressure gear pump and bearing assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211082240U true CN211082240U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921904900.3U Active CN211082240U (en) | 2019-11-06 | 2019-11-06 | High-pressure gear pump and bearing assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211082240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090672A (en) * | 2021-03-26 | 2021-07-09 | 龙岩市金山粉末冶金有限公司 | Sliding shaft seat of gear pump and manufacturing process thereof |
-
2019
- 2019-11-06 CN CN201921904900.3U patent/CN211082240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090672A (en) * | 2021-03-26 | 2021-07-09 | 龙岩市金山粉末冶金有限公司 | Sliding shaft seat of gear pump and manufacturing process thereof |
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