CN216951316U - Dysmorphism take-up pulley bearing and take-up pulley structure - Google Patents
Dysmorphism take-up pulley bearing and take-up pulley structure Download PDFInfo
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- CN216951316U CN216951316U CN202220663173.1U CN202220663173U CN216951316U CN 216951316 U CN216951316 U CN 216951316U CN 202220663173 U CN202220663173 U CN 202220663173U CN 216951316 U CN216951316 U CN 216951316U
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Abstract
The utility model relates to the field of bearings, and particularly discloses a special-shaped tension pulley bearing and a tension pulley structure. The special-shaped tension wheel bearing comprises an inner ring, an outer ring, a rolling body and a retainer, wherein the thickness of the outer ring is H, and the outer diameter of the outer ring is D, so that H/D = 1/6-1/5; the inner edge of the inner ring is enclosed to form a radial positioning hole, the inner wall of the radial positioning hole is provided with an installation part extending inwards, and the width of the installation part is smaller than that of the inner ring; the installation part is provided with an installation hole, the installation hole and the radial positioning hole are coaxially arranged, and the diameter of the installation hole is smaller than that of the radial positioning hole. The special-shaped tensioning wheel bearing has the advantages of convenience in processing, stability in operation and the like.
Description
Technical Field
The utility model relates to the field of bearings, in particular to a special-shaped tension pulley bearing and a tension pulley structure.
Background
A tensioner is an accessory to a belt drive structure for changing the wrap angle of a pulley or controlling the tension of a belt, usually a follower wheel that presses against the belt. The method is widely applied to engines of machines such as motors, automobiles, conveyors and hoisting equipment.
The tension of the tension wheel controls the working performance of the belt transmission structure. If the tension is too small, the friction between the belt and the working wheel is small, and the belt has the risk of slipping. If the tensioning force is too large, the load of the tensioning wheel on the belt is too large, the belt is abraded too much, and the belt is easy to damage. Particularly, under the high-speed working condition of the engine, the tension wheel, the working wheel and the belt all rotate at high speed, and the influence of the tension force of the tension wheel on the working stability of the belt transmission structure is more obvious. Therefore, a tension wheel bearing with stable tension needs to be designed.
Disclosure of Invention
The utility model aims to provide a special-shaped tensioning wheel bearing and a tensioning wheel structure, which have the advantages of convenience in processing, stability in operation and the like.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a special-shaped tension wheel bearing comprises an inner ring, an outer ring, a rolling body and a retainer,
the thickness of the outer ring is H, the outer diameter of the outer ring is D, and H/D = 1/6-1/5;
the inner edge of the inner ring is encircled to form a radial positioning hole, the inner wall of the radial positioning hole is provided with an installation part extending inwards, and the width of the installation part is smaller than that of the inner ring;
the installation part is provided with an installation hole, the installation hole and the radial positioning hole are coaxially arranged, and the diameter of the installation hole is smaller than that of the radial positioning hole.
The thickness of outer lane is greater than conventional bearing, can directly be used for with the belt contact, simple structure, production is convenient. The radial positioning hole is used for being connected with the matched mounting shaft and radially positioning the mounting shaft, so that the overall radial positioning precision of the tension pulley bearing is ensured, the vibration of the tension pulley bearing during operation is reduced, and meanwhile, the tension force is more accurately controlled. The installation department is used for carrying out axial positioning to supporting installation axle to the cooperation is used for the installation to fix on the installation axle.
The tension wheel bearing has the advantages of simple structure, high operation precision and accurate tension adjustment.
Preferably, the width of the outer ring is L, and L/D = 1/3-2/5.
The width of the outer ring is enough to arrange double rows of rolling bodies, so that unbalance loading can be effectively avoided, and the running stability of the tension pulley bearing is further improved.
Preferably, the diameter of the radial positioning hole is d1, and the diameter of the mounting hole is d2, so that d2/d1= 1/4-1/3.
Preferably, the width of the mounting portion is S1, and the width of the inner ring is S2, so that S1/S2= 1/3-1/2.
Preferably, one end of the mounting part is provided with a first positioning boss, the other end of the mounting part is provided with a second positioning boss, and the first positioning boss axially extends out of the corresponding end part of the inner ring.
The first positioning boss is used for positioning a matched dust cover, and the second positioning boss is used for positioning a matched mounting shaft.
Preferably, an annular transition groove is arranged between the first positioning boss and the corresponding end face of the inner ring.
The transition groove can eliminate a processing fillet between the first positioning boss and the end face of the inner ring, and ensures that the matched dust cover is in close contact with the end face of the inner ring.
Preferably, the end of the outer race is provided with an annular flange extending axially outwardly.
The annular flange is matched with the dust cover to form a complete dust-proof structure, so that impurities are effectively prevented from entering the running space of the rolling body, and the service life of the bearing of the tension pulley is prolonged.
A tensioning wheel structure comprises a bearing and a mounting shaft, wherein the bearing is the special-shaped tensioning wheel bearing, the mounting shaft is inserted into a radial positioning hole and is in clearance fit with the radial positioning hole, and the corresponding end part of the mounting shaft is abutted to a mounting part;
the connecting piece passes through the mounting hole and is detachably connected with the mounting shaft.
Preferably, the dust cover is arranged on one side of the mounting part far away from the mounting shaft and is detachably connected with the mounting part through a connecting piece.
Drawings
FIG. 1 is a schematic structural view of a tensioner of the present embodiment;
FIG. 2 is a side view of the tensioner of the present embodiment;
FIG. 3 is a schematic structural diagram of a special-shaped tensioner bearing in the tensioner structure of the present embodiment;
FIG. 4 is a schematic structural diagram of an outer ring of the tensioner structure of the present embodiment;
fig. 5 is a schematic structural view of an inner ring in the tensioner structure of the present embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Examples
As shown in fig. 1-3, a tensioner structure comprises a mounting shaft 3 and a special-shaped tensioner bearing, wherein the special-shaped tensioner bearing comprises an inner ring 2, an outer ring 1, rolling bodies and a retainer.
As shown in fig. 3-5, the inner edge of the inner ring 2 encloses a radial positioning hole 25, the inner wall of the radial positioning hole 25 is provided with an inwardly extending mounting portion 21, and the width of the mounting portion 21 is smaller than that of the inner ring 2. Specifically, as shown in fig. 5, the width of the mounting portion 21 is S1, and the width of the inner ring 2 is S2, which means S1/S2=1/3 to 1/2.
As shown in fig. 3 and 5, the mounting portion 21 is provided with a mounting hole 23, the mounting hole 23 is coaxially disposed with the radial positioning hole 25, and the diameter of the mounting hole 23 is smaller than that of the radial positioning hole 25. Specifically, the diameter of the radial positioning hole 25 is d1, and the diameter of the mounting hole 23 is d2, so that d2/d1= 1/4-1/3.
As shown in fig. 1, the mounting shaft 3 is inserted into the radial positioning hole 25, and is in clearance fit with the radial positioning hole 25, and the corresponding end of the mounting shaft 3 abuts against the mounting portion 21. The connecting piece 4 is also included, and the connecting piece 4 passes through the mounting hole 23 and is detachably connected with the mounting shaft 3. Specifically, the connecting member 4 is a bolt.
The radial positioning hole 25 is used for being connected with the matched mounting shaft 3 and radially positioning the mounting shaft 3, so that the overall radial positioning precision of the tensioner bearing is ensured, the vibration of the tensioner bearing during operation is reduced, and meanwhile, the tensioning force is more accurately controlled. The mounting portion 21 is used for axially positioning the mounting shaft 3 and is matched to fix the mounting shaft 3.
Further, as shown in fig. 4, the outer ring 1 has a thickness H, and the outer ring 1 has an outer diameter D, i.e., H/D =1/6 to 1/5, and the outer ring 1 has a width L, i.e., L/D =1/3 to 2/5.
The thickness of the outer ring 1 is larger than that of a conventional bearing, the outer ring can be directly used for being in contact with a belt, the structure is simple, and the production is convenient. The width of the outer ring 1 is enough to arrange double rows of rolling bodies, so that unbalance loading can be effectively avoided, and the running stability of the tension pulley bearing is further improved.
Further, as shown in fig. 1 and 5, one end of the mounting portion 21 is provided with a first positioning boss 22, and the other end is provided with a second positioning boss 24, where the first positioning boss 22 axially extends out of the corresponding end portion of the inner ring 2. The first locating boss 22 is used to locate the mating dust cap 5 and the second locating boss 24 is used to locate the mating mounting shaft 3. An annular transition groove 26 is arranged between the first positioning boss 22 and the corresponding end surface of the inner ring 2. The transition groove 26 can eliminate the processing round angle between the first positioning boss 22 and the end face of the inner ring 2, and ensure that the matched dust cover 5 is in close contact with the end face of the inner ring 2.
Further, as shown in fig. 1, the device further comprises a dust cover 5, wherein the dust cover 5 is located on one side of the mounting portion 21 away from the mounting shaft 3 and is detachably connected with the mounting portion 21 through a connecting member 4.
As shown in fig. 1, 3 and 4, the end of the outer ring 1 is provided with an annular flange 11 extending axially outward. Annular flange 11 forms complete dustproof construction with dust cover 5 cooperation, effectively avoids impurity to get into rolling element operating space, improves the life of tensioning wheel bearing.
The tension wheel bearing has the advantages of simple structure, high operation precision and accurate tension adjustment.
In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a dysmorphism take-up pulley bearing, includes inner circle, outer lane, rolling element and holder, its characterized in that:
the thickness of the outer ring is H, the outer diameter of the outer ring is D, and H/D = 1/6-1/5;
the inner edge of the inner ring is encircled to form a radial positioning hole, the inner wall of the radial positioning hole is provided with an installation part extending inwards, and the width of the installation part is smaller than that of the inner ring;
the installation part is provided with an installation hole, the installation hole and the radial positioning hole are coaxially arranged, and the diameter of the installation hole is smaller than that of the radial positioning hole.
2. The contoured tensioner bearing of claim 1, wherein: and the width of the outer ring is L, and L/D = 1/3-2/5.
3. The contoured tensioner bearing of claim 1, wherein: the diameter of the radial positioning hole is d1, the diameter of the mounting hole is d2, and then d2/d1=1/4~ 1/3.
4. The contoured tensioner bearing of claim 1, wherein: the width of the mounting part is S1, and the width of the inner ring is S2, so that S1/S2= 1/3-1/2.
5. The contoured tensioner bearing of claim 1, wherein: one end of the mounting part is provided with a first positioning boss, the other end of the mounting part is provided with a second positioning boss, and the first positioning boss axially extends out of the corresponding end part of the inner ring.
6. The contoured tensioner bearing of claim 5, wherein: and an annular transition groove is arranged between the first positioning boss and the corresponding end face of the inner ring.
7. The contoured tensioner bearing of any of claims 1-6, wherein: the end of the outer ring is provided with an annular flange extending outwards along the axial direction.
8. The utility model provides a take-up pulley structure, includes bearing and installation axle, its characterized in that: the special-shaped tensioner bearing as claimed in any one of claims 1 to 7, wherein the mounting shaft is inserted into the radial positioning hole and is in clearance fit with the radial positioning hole, and the corresponding end of the mounting shaft abuts against the mounting part;
the connecting piece passes through the mounting hole and is detachably connected with the mounting shaft.
9. The tensioner as in claim 8, wherein: still include the dust cover, the dust cover be located the installation department and keep away from the one side of installation axle to through connecting piece and installation department releasable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220663173.1U CN216951316U (en) | 2022-03-25 | 2022-03-25 | Dysmorphism take-up pulley bearing and take-up pulley structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220663173.1U CN216951316U (en) | 2022-03-25 | 2022-03-25 | Dysmorphism take-up pulley bearing and take-up pulley structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951316U true CN216951316U (en) | 2022-07-12 |
Family
ID=82298370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220663173.1U Active CN216951316U (en) | 2022-03-25 | 2022-03-25 | Dysmorphism take-up pulley bearing and take-up pulley structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951316U (en) |
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2022
- 2022-03-25 CN CN202220663173.1U patent/CN216951316U/en active Active
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