CN215928307U - Idler structure and engine - Google Patents
Idler structure and engine Download PDFInfo
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- CN215928307U CN215928307U CN202121320027.0U CN202121320027U CN215928307U CN 215928307 U CN215928307 U CN 215928307U CN 202121320027 U CN202121320027 U CN 202121320027U CN 215928307 U CN215928307 U CN 215928307U
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- intermediate shaft
- belt pulley
- cavity
- idler
- wall
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Abstract
The utility model relates to the technical field of engines, and discloses an idler wheel structure and an engine, wherein the idler wheel structure comprises: the device comprises an intermediate shaft, a plurality of balls, a belt pulley and two bearing blocking covers; the intermediate shaft is positioned on the inner side of the belt pulley, the central axis of the intermediate shaft is the same as that of the belt pulley, a cavity is formed between the intermediate shaft and the belt pulley, and the outer wall of the intermediate shaft is matched with the inner wall of the belt pulley to form at least one rolling path surrounding the intermediate shaft; the balls are positioned in the roller path, so that the belt pulley can rotate on the intermediate shaft; along the extending direction of the intermediate shaft, the two bearing blocking covers are respectively positioned at two ends inside the cavity, and the raceway is positioned between the two bearing blocking covers so as to seal the cavity. The cavity is sealed structure in this idler structure, can avoid the dust to get into the cavity for the idler has the advantage of lifelong self-lubricating, need not regular maintenance filling lubricating grease in the use, can avoid the idler inefficacy.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to an idler wheel structure and an engine.
Background
The structure of the prior idle wheel part of the ball bearing is shown in figure 1, and mainly comprises two groups of deep groove ball bearings 03 which are coated with lubricating grease and then sequentially installed in a belt pulley 01, positioned by an elastic retainer ring 02, and then a front end dust cover 05 is fixed on an intermediate shaft 04, and the intermediate shaft 04 penetrates through the bearings. Because of belt pulley and front end shield are half seal structure, and the rear end does not have the shield, at the idler working process, the dust will get into the idler bearing through front end and rear end clearance, because of the frictional force increase, can cause the emergence of lubricating grease high temperature ablation phenomenon, and then leads to the idler inefficacy.
SUMMERY OF THE UTILITY MODEL
The hollow cavity of the idler wheel structure is of a sealing structure, so that dust can be prevented from entering the hollow cavity, the idler wheel has the advantage of life-long self-lubrication, lubricating grease does not need to be maintained and filled regularly in the use process, and the idler wheel can be prevented from losing efficacy.
In order to achieve the purpose, the utility model provides the following technical scheme:
an idler wheel structure comprises an intermediate shaft, a plurality of balls, a belt pulley and two bearing blocking covers;
the middle shaft is positioned on the inner side of the belt pulley, the central axis of the middle shaft is the same as that of the belt pulley, a cavity is formed between the middle shaft and the belt pulley, and the outer wall of the middle shaft and the inner wall of the belt pulley are matched to form at least one rolling path surrounding the middle shaft;
said balls being located in said raceways so that said pulley is rotatable on said intermediate shaft;
along the extending direction of the intermediate shaft, the two bearing blocking covers are respectively positioned at two ends inside the cavity, and the raceway is positioned between the two bearing blocking covers so as to seal the cavity.
The embodiment of the utility model provides an among the idler structure, including the jackshaft, a plurality of ball, belt pulley and two bearing blanking caps, wherein, the cavity has between jackshaft and the belt pulley, the outer wall of jackshaft is formed with at least one raceway that encircles the jackshaft with the inner wall cooperation of belt pulley, the ball is located the raceway, be about to the belt pulley of idler and the integrated integral type structure of bearing, the jackshaft, ball and belt pulley assembly accomplish the back, will annotate a certain amount of lubricating grease in the cavity, two bearing blanking caps are located the inside both ends of cavity, can make the cavity sealed, because this cavity is seal structure, can avoid the dust to get into the cavity, make the idler have the advantage of lifelong self-lubricating, need not periodic maintenance filling lubricating grease in the use, can avoid the idler inefficacy.
Optionally, the outer wall of the intermediate shaft has at least one first groove encircling the intermediate shaft, the region of the inner wall of the pulley opposite the first groove has a second groove encircling the intermediate shaft, the space between the first and second grooves forming the raceway.
Optionally, the outer wall of the intermediate shaft and the inner wall of the belt pulley cooperate to form two parallel raceways.
Optionally, the number of balls in both of said races is equal.
Optionally, the roller bearing further comprises a bearing retainer located in the cavity and fixed to the intermediate shaft and the pulley, and each of the balls is disposed in the raceway through the bearing retainer.
The utility model also provides an engine comprising any one of the idler structures provided in the above technical scheme.
Drawings
FIG. 1 is a schematic diagram of an idler structure according to the prior art;
fig. 2 is a schematic structural diagram of an idler structure provided in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, an embodiment of the present invention provides an idler structure, which includes an intermediate shaft 1, a plurality of balls 3, a pulley 2, and two bearing caps 4;
the intermediate shaft 1 is positioned on the inner side of the belt pulley 2, the central axis of the intermediate shaft 1 is the same as that of the belt pulley 2, a cavity A is formed between the intermediate shaft 1 and the belt pulley 2, and the outer wall of the intermediate shaft 1 is matched with the inner wall of the belt pulley 2 to form at least one rolling path surrounding the intermediate shaft 1;
the balls 3 are positioned in the raceway so that the pulley 2 can rotate on the intermediate shaft 1;
along the extending direction of the intermediate shaft 1, the two bearing blocking covers 4 are respectively positioned at two ends inside the cavity A, and the roller path is positioned between the two bearing blocking covers 4 so as to seal the cavity A.
The idle wheel structure provided by the embodiment of the utility model comprises an intermediate shaft 1, a plurality of balls 3, a belt pulley 2 and two bearing blocking covers 4, wherein a cavity A is arranged between the intermediate shaft 1 and the belt pulley 2, the outer wall of the intermediate shaft 1 is matched with the inner wall of the belt pulley 2 to form at least one rolling way surrounding the intermediate shaft 1, the ball 3 is positioned in the rolling way, namely, the belt pulley 2 of the idle pulley and the bearing are integrated into a whole structure, after the intermediate shaft 1, the balls 3 and the belt pulley 2 are assembled, a certain amount of lubricating grease is filled in the cavity A, the two bearing blocking covers 4 are positioned at the two ends in the cavity A, the cavity A can be sealed, because this cavity A is seal structure, can avoid the dust to get into cavity A for the idler has the advantage of lifelong self-lubricating, need not regular maintenance filling lubricating grease in the use, can avoid the idler inefficacy.
In addition, in the embodiment of the utility model, the outer wall of the intermediate shaft 1 and the inner wall of the belt pulley 2 are matched to form at least one raceway surrounding the intermediate shaft 1, namely, the inner ring of the existing bearing and the outer wall of the intermediate shaft 1 are designed into an integrated structure, and the outer ring of the existing bearing and the inner wall of the belt pulley 2 are designed into an integrated structure, namely, the belt pulley 2 simultaneously plays a role of a bearing outer ring, so that the bearing outer ring can be effectively prevented from being overheated and failed due to too large interference between the bearing outer ring and the belt pulley 2 in the press mounting process. In addition, because the ball 3 size in the deep groove ball bearing often is limited in the size of belt pulley 2 diameter, that is to say under the prerequisite of belt pulley 2 size determination, the diameter of ball 3 generally can not adjust and increase a lot, and this makes the bearing capacity of bearing itself limited, and with belt pulley 2 directly as the outer lane of bearing, can save certain space for under the unchangeable condition of belt pulley 2 diameter, ball 3 size can further increase, and bearing capacity can further improve. The idler wheel structure provided by the embodiment of the utility model can prolong the service life of the idler wheel, reduce the failure rate of equipment comprising the idler wheel structure and improve the use effect of customers.
In a particular embodiment, the outer wall of the intermediate shaft 1 can be provided with at least one first groove encircling the intermediate shaft 1, the region of the inner wall of the pulley 2 opposite the first groove can have a second groove encircling the intermediate shaft 1, the space between the first and second grooves can then form a raceway in which the balls 3 are arranged, the balls 3 rotating within the raceway, enabling the pulley 2 to rotate.
In a specific embodiment, the outer wall of the intermediate shaft 1 and the inner wall of the pulley 2 may cooperate to form two parallel raceways to facilitate the connection of the pulley 2 with the intermediate shaft 1.
In a particular embodiment, the number of balls 3 in the two raceways is equal, corresponding to the connection between the intermediate shaft 1 and the pulley 2 by means of two identical bearings.
In a particular embodiment, the above-mentioned idle wheel structure further comprises a bearing cage 5 located in the cavity a and fixed to the intermediate shaft 1 and to the pulley 2, each ball 3 being arranged in a raceway by means of the bearing cage 5.
An embodiment of the present invention further provides an engine, including any one of the idler structures provided in the above technical solutions.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. An idler wheel structure is characterized by comprising an intermediate shaft, a plurality of balls, a belt pulley and two bearing blocking covers;
the middle shaft is positioned on the inner side of the belt pulley, the central axis of the middle shaft is the same as that of the belt pulley, a cavity is formed between the middle shaft and the belt pulley, and the outer wall of the middle shaft and the inner wall of the belt pulley are matched to form at least one rolling path surrounding the middle shaft;
said balls being located in said raceways so that said pulley is rotatable on said intermediate shaft;
along the extending direction of the intermediate shaft, the two bearing blocking covers are respectively positioned at two ends inside the cavity, and the raceway is positioned between the two bearing blocking covers so as to seal the cavity.
2. The idler structure of claim 1 wherein the outer wall of the intermediate shaft has at least one first groove encircling the intermediate shaft, the region of the inner wall of the pulley opposite the first groove having a second groove encircling the intermediate shaft, the space between the first and second grooves forming the raceway.
3. The idler structure of claim 1 wherein the outer wall of the intermediate shaft and the inner wall of the pulley cooperate to form two parallel raceways.
4. The idler structure of claim 3 wherein the number of balls in both of said races is equal.
5. The idler structure of claim 1, further including a bearing cage positioned in the cavity and secured to the intermediate shaft and pulley, each of the balls being disposed in the raceway through the bearing cage.
6. An engine including an idler structure as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121320027.0U CN215928307U (en) | 2021-06-15 | 2021-06-15 | Idler structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121320027.0U CN215928307U (en) | 2021-06-15 | 2021-06-15 | Idler structure and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928307U true CN215928307U (en) | 2022-03-01 |
Family
ID=80402864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121320027.0U Active CN215928307U (en) | 2021-06-15 | 2021-06-15 | Idler structure and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928307U (en) |
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2021
- 2021-06-15 CN CN202121320027.0U patent/CN215928307U/en active Active
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