CN219263122U - Sprocket of high-pressure oil pump - Google Patents
Sprocket of high-pressure oil pump Download PDFInfo
- Publication number
- CN219263122U CN219263122U CN202320222573.3U CN202320222573U CN219263122U CN 219263122 U CN219263122 U CN 219263122U CN 202320222573 U CN202320222573 U CN 202320222573U CN 219263122 U CN219263122 U CN 219263122U
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- sleeve
- gear
- chain wheel
- arc
- oil pump
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Abstract
The utility model relates to a high-pressure oil pump chain wheel, which comprises a shaft sleeve, a gear sleeve and a chain wheel group, wherein the chain wheel group comprises a large gear and a small gear, the large gear and the small gear are integrally formed by powder metallurgy, a central hole of the chain wheel group is sleeved on the gear sleeve and limited by a blocking edge at the end part of the gear sleeve, and the shaft sleeve is inserted into the gear sleeve and presses the chain wheel group by a pressing edge on the shaft sleeve; the transmission shaft passes through the inner cavity of the shaft sleeve to the inner cavity of the gear sleeve and is locked by a nut arranged in the inner cavity of the gear sleeve. The oil pump chain wheel with the original integrated structure is changed into a split structure form, and the oil pump chain wheel consists of the shaft sleeve, the gear sleeve and the chain wheel group, so that the oil pump chain wheel is convenient to disassemble and assemble, the chain wheel group with serious abrasion in the use process can be independently replaced, and the maintenance cost is reduced.
Description
Technical Field
The utility model relates to a chain wheel, in particular to a high-pressure oil pump chain wheel.
Background
The existing oil pump chain wheel comprises a shaft sleeve used for connecting a transmission shaft, a large gear and a small gear are arranged on the shaft sleeve, the large gear, the small gear and the shaft sleeve are integrally formed through powder metallurgy, in the use process, the large gear and the small gear are in matched transmission with a chain, the abrasion condition is particularly prominent, once any one of the large gear or the small gear is seriously abraded, the whole product needs to be replaced, so that the maintenance cost is increased, and the resource waste is caused to a certain extent.
Based on above problem, this application provides a high-pressure oil pump sprocket, adopts components of a whole that can function independently structural style, and the component parts of sprocket can be changed in a flexible way.
Disclosure of Invention
The utility model provides a high-pressure oil pump chain wheel aiming at the defects of the prior art.
The utility model is realized by the following technical scheme, and provides a high-pressure oil pump sprocket, which comprises a shaft sleeve, a gear sleeve and a sprocket group, wherein the sprocket group comprises a large gear and a small gear which are integrally formed by powder metallurgy, a central hole of the sprocket group is sleeved on the gear sleeve and limited by a blocking edge at the end part of the gear sleeve, and the shaft sleeve is spliced with the gear sleeve and compresses the sprocket group by a pressing edge on the shaft sleeve; the transmission shaft passes through the inner cavity of the shaft sleeve to the inner cavity of the gear sleeve and is locked by a nut arranged in the inner cavity of the gear sleeve. The shaft sleeve is tightly connected with the gear sleeve through nut locking, and further the constraint limit of the chain wheel set is realized through the cooperation of the shaft sleeve and the gear sleeve.
A plurality of arc-shaped protruding blocks distributed along the circumferential direction of the connecting end face of the gear sleeve are arranged on the connecting end face of the shaft sleeve, arc-shaped containing grooves corresponding to the arc-shaped protruding blocks are respectively arranged on the connecting end face of the shaft sleeve, and the arc-shaped protruding blocks are spliced with the corresponding arc-shaped containing grooves. The shaft sleeve is inserted with the gear sleeve through the matching of the arc-shaped protruding blocks and the arc-shaped containing grooves.
Preferably, in order to strengthen the fixing effect of the shaft sleeve and the gear sleeve, threaded connection holes corresponding to the arc-shaped containing grooves are formed in the shaft sleeve respectively, each threaded connection hole is communicated with the corresponding arc-shaped containing groove, each arc-shaped protruding block is provided with a mounting hole, the mounting holes are concentric with the threaded connection holes, and the threaded connection holes and the mounting holes are connected through bolts in a penetrating mode. The fixing effect is enhanced by adopting a mode of firstly plugging and then fixing by bolts.
Preferably, in order to prevent the gear wheel set from slipping on the gear sleeve, an outer straight edge limiting part is arranged on the outer wall of the gear sleeve, and an inner straight edge limiting part matched with the outer straight edge limiting part is arranged on the inner wall of the central hole of the gear set. The sprocket set is sleeved on the gear sleeve, the limiting effect is achieved through the cooperation of the outer straight edge limiting part and the inner straight edge limiting part, and the sprocket set is prevented from being integrally molded by powder metallurgy through the gear sleeve, the blocking edge and the arc-shaped protruding block on the gear sleeve.
Preferably, the inner cavity of the shaft sleeve is of a conical structure, and the diameter of one end close to the gear sleeve is smaller than that of one end far away from the gear sleeve.
The beneficial effects of the utility model are as follows:
the oil pump chain wheel with the original integrated structure is changed into a split structure form, and the oil pump chain wheel consists of the shaft sleeve, the gear sleeve and the chain wheel group, so that the oil pump chain wheel is convenient to disassemble and assemble, the chain wheel group with serious abrasion in the use process can be independently replaced, and the maintenance cost is reduced.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the present utility model;
FIG. 2 is a schematic elevational view of the sprocket assembly of the present utility model;
FIG. 3 is a schematic view of the gear sleeve B of FIG. 1;
FIG. 4 is a schematic view of the axial sleeve A in FIG. 1;
the figure shows:
1. the gear comprises a large gear, 2, a small gear, 3, a gear sleeve, 4, a blocking edge, 5, a shaft sleeve, 6, an arc-shaped containing groove, 7, a threaded connection hole, 8, an arc-shaped lug, 9, a mounting hole, 10, an inner straight edge limiting part, 11 and an outer straight edge limiting part.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
As shown in fig. 1-4, the utility model comprises a shaft sleeve 5, a gear sleeve 3 and a chain wheel set, wherein the chain wheel set comprises a large gear 1 and a small gear 2, the large gear 1 and the small gear 2 are integrally formed by powder metallurgy, a central hole of the chain wheel set is sleeved on the gear sleeve 3 and limited by a baffle edge 4 at the end part of the gear sleeve 3, and the shaft sleeve 5 is inserted into the gear sleeve 3 and compresses the chain wheel set by a blank pressing edge on the shaft sleeve 5. The transmission shaft (not shown) passes through the inner cavity of the shaft sleeve 5 to the inner cavity of the gear sleeve 3 and is locked by a nut arranged in the inner cavity of the gear sleeve 3. The shaft sleeve 5 is tightly connected with the gear sleeve 3 through nut locking, and further the constraint limit of the chain wheel set is realized through the cooperation of the shaft sleeve 5 and the gear sleeve 3.
A plurality of arc-shaped protruding blocks 8 distributed along the circumferential direction are arranged on the connecting end surface of the gear sleeve 3, arc-shaped containing grooves 6 corresponding to the arc-shaped protruding blocks 8 are arranged on the connecting end surface of the shaft sleeve 5, and the arc-shaped protruding blocks 8 are spliced with the corresponding arc-shaped containing grooves 6. The shaft sleeve 5 is inserted into the gear sleeve 3 through the cooperation of the arc-shaped protruding blocks 8 and the arc-shaped containing grooves 6.
In order to strengthen the fixing effect of the shaft sleeve 5 and the gear sleeve 3, threaded connection holes 7 corresponding to the arc-shaped containing grooves 6 are formed in the shaft sleeve 5, each threaded connection hole 7 is communicated with the corresponding arc-shaped containing groove 6, each arc-shaped protruding block 8 is provided with a mounting hole 9, the mounting holes 9 are concentric with the threaded connection holes 7, and the threaded connection holes 7 and the mounting holes 9 are connected through bolts. The fixing effect is enhanced by adopting a mode of firstly plugging and then fixing by bolts.
In order to prevent the sprocket set from slipping on the gear sleeve 3, as shown in fig. 3, an outer straight edge limiting part 11 is arranged on the outer wall of the gear sleeve 3, and an inner straight edge limiting part 10 matched with the outer straight edge limiting part 11 is arranged on the inner wall of the central hole of the sprocket set. The sprocket set is sleeved on the gear sleeve 3 and plays a limiting role through the cooperation of the outer straight edge limiting part 11 and the inner straight edge limiting part 10, so that the sprocket set is prevented from slipping on the gear sleeve 3.
In this embodiment, the gear sleeve 3, the baffle edge 4 and the arc-shaped protruding block 8 are integrally formed by powder metallurgy.
In this embodiment, the inner cavity of the sleeve 5 has a conical structure and the diameter of the end near the gear sleeve 3 is smaller than the diameter of the end far from the gear sleeve 3.
The oil pump chain wheel with the original integrated structure is changed into a split structural form, and the oil pump chain wheel consists of the shaft sleeve 5, the gear sleeve 3 and the chain wheel group, so that the oil pump chain wheel is convenient to disassemble and assemble, and the chain wheel group with serious abrasion in the use process can be independently replaced, so that the maintenance cost is reduced.
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (6)
1. A high pressure oil pump sprocket, characterized in that: the chain wheel set comprises a large gear and a small gear which are integrally formed by powder metallurgy, a central hole of the chain wheel set is sleeved on the gear sleeve and limited by a blocking edge at the end part of the gear sleeve, and the shaft sleeve is inserted with the gear sleeve and presses the chain wheel set by a pressing edge on the shaft sleeve; the transmission shaft passes through the inner cavity of the shaft sleeve to the inner cavity of the gear sleeve and is locked by a nut arranged in the inner cavity of the gear sleeve.
2. A high pressure oil pump sprocket as in claim 1, wherein: a plurality of arc-shaped protruding blocks distributed along the circumferential direction of the connecting end face of the gear sleeve are arranged on the connecting end face of the shaft sleeve, arc-shaped containing grooves corresponding to the arc-shaped protruding blocks are respectively arranged on the connecting end face of the shaft sleeve, and the arc-shaped protruding blocks are spliced with the corresponding arc-shaped containing grooves.
3. A high pressure oil pump sprocket as in claim 2 wherein: the shaft sleeve is provided with threaded connection holes corresponding to the arc-shaped containing grooves respectively, each threaded connection hole is communicated with the corresponding arc-shaped containing groove, each arc-shaped lug is provided with a mounting hole, the mounting holes are concentric with the threaded connection holes, and the threaded connection holes are connected with the mounting holes through bolts in a penetrating mode.
4. A high pressure oil pump sprocket as in claim 1, wherein: an outer straight edge limiting part is arranged on the outer wall of the gear sleeve, and an inner straight edge limiting part matched with the outer straight edge limiting part is arranged on the inner wall of the central hole of the chain wheel set.
5. A high pressure oil pump sprocket as in claim 2 wherein: the gear sleeve, the baffle edge and the arc-shaped protruding block are integrally formed by powder metallurgy.
6. A high pressure oil pump sprocket as in claim 1, wherein: the inner cavity of the shaft sleeve is of a conical structure, and the diameter of one end close to the gear sleeve is smaller than that of one end far away from the gear sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320222573.3U CN219263122U (en) | 2023-02-15 | 2023-02-15 | Sprocket of high-pressure oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320222573.3U CN219263122U (en) | 2023-02-15 | 2023-02-15 | Sprocket of high-pressure oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219263122U true CN219263122U (en) | 2023-06-27 |
Family
ID=86856477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320222573.3U Active CN219263122U (en) | 2023-02-15 | 2023-02-15 | Sprocket of high-pressure oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219263122U (en) |
-
2023
- 2023-02-15 CN CN202320222573.3U patent/CN219263122U/en active Active
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