CN220505701U - High-reliability asymmetric damping structure tensioning wheel - Google Patents
High-reliability asymmetric damping structure tensioning wheel Download PDFInfo
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- CN220505701U CN220505701U CN202322192633.4U CN202322192633U CN220505701U CN 220505701 U CN220505701 U CN 220505701U CN 202322192633 U CN202322192633 U CN 202322192633U CN 220505701 U CN220505701 U CN 220505701U
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- 238000013016 damping Methods 0.000 title claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 abstract description 8
- 239000004696 Poly ether ether ketone Substances 0.000 abstract description 7
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 abstract description 7
- 229920002530 polyetherether ketone Polymers 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a high-reliability asymmetric damping structure tensioning wheel which comprises a supporting sleeve, a support plate, a central shaft sleeve, a spring, an antifriction and dustproof ferrule, a plastic clamping ring, a sliding bearing, a belt pulley, a shaft bolt, a dustproof cover, a retainer ring, a bearing, an antifriction plate and a pressing plate. The central shaft sleeve is fixed with the supporting sleeve and the pressing plate through knurling at two ends; one end of the spring is fixed with a spring limiting block of the supporting sleeve, and the other end of the spring is connected with a spring limiting block of the supporting plate, so that the requirement of the tensioning wheel for providing torque is met; the support plate is pressed in with the sliding bearing by interference fit; one end of the support plate is provided with a step for positioning the bearing so as to ensure the normal rotation of the bearing outer skin belt pulley. According to the utility model, the reliability and the service life of the tensioning wheel are improved by adopting the sliding bearing made of PEEK material and the double-row angular contact ball bearing, meanwhile, the layout of wear-resistant materials of equipment is optimized, the wear resistance of parts is improved, and the tensioning wheel is more stable and reliable.
Description
Technical Field
The utility model relates to an automatic tensioning wheel, in particular to a high-reliability asymmetric damping structure tensioning wheel.
Background
V-ribbed belts are increasingly used in front-end gear trains of engines, but belt transmission belongs to friction transmission, and the belt can be gradually extended and worn along with the continuous increase of time. In order to ensure that the engine can stably, efficiently and reliably transfer energy to each front end accessory and ensure that the belt tension changes in a relatively stable area, a tensioning device (tensioning wheel) is added to the front end train accessory. The traditional fixed tensioning device cannot automatically compensate due to the extension of the belt, when the tension of the belt is insufficient, the accessory belt transmission system has the problems of low transmission efficiency, high noise and the like, so that the automatic tensioning wheel is developed, the belt is gradually extended and worn along with the belt, the belt tension is ensured to change in a relatively stable area, and the engine is ensured to stably, efficiently and reliably transmit energy to all front-end accessories. However, with the development of the national six-engine in China, the service condition of the engine is not only improved and optimized, but also the traditional asymmetric damping tensioning wheel can not meet the requirements of the national six-engine.
Disclosure of Invention
The utility model aims to overcome the defect of insufficient reliability of the traditional asymmetric damping tensioning wheel and provides a high-reliability asymmetric damping structure tensioning wheel.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high-reliability asymmetric damping structure tensioning wheel which comprises a supporting sleeve, a support plate, a central shaft sleeve, a spring, an antifriction and dustproof ferrule, a plastic clamping ring, a sliding bearing, a belt pulley, a shaft bolt, a dustproof cover, a retainer ring, a bearing, an antifriction plate and a pressing plate, wherein the supporting sleeve is arranged on the supporting sleeve; the central shaft sleeve is fixed with the supporting sleeve and the pressing plate through knurling at two ends; one end of the spring is fixed with a spring limiting block of the supporting sleeve, and the other end of the spring is connected with the spring limiting block of the supporting plate to ensure rotatability, so that the requirement of the tensioning wheel for providing torque is met; the support plate of the rotating piece is pressed in with the sliding bearing by interference fit; one end of the rotating piece support plate is provided with a step for positioning a bearing so as to ensure the normal rotation of the bearing outer skin belt pulley; a limiting groove is formed in the support plate, and the clamping ring and the plastic clamping ring are arranged on the limiting groove; the clamping ring is fixed with the plastic clamping ring and then is arranged between the spring and the supporting sleeve.
Furthermore, the high-reliability asymmetric damping structure tensioning wheel is characterized in that the supporting sleeve is fixed on the engine.
Further, the high-reliability asymmetric damping structure tensioning wheel is characterized in that the support plate is pressed on the pressing plate by utilizing the pressure of the back shrinkage of the spring, a wear-resistant piece antifriction plate is designed between the support plate and the pressing plate, a clamping ring and a plastic clamping ring are designed between the spring and the support sleeve, and a wear-resistant dustproof ferrule is arranged between the support plate and the support sleeve, so that the support plate of the rotating piece is completely and seamlessly attached to all wear-resistant pieces.
Furthermore, the high-reliability asymmetric damping structure tensioning wheel is characterized in that the bearing adopts double-row angular contact ball bearings, and two single-row deep groove ball bearings are adopted relatively, so that better form and position tolerance can be ensured.
Furthermore, the aperture of the antifriction plate is slightly larger than the outer diameter of the central shaft sleeve, so that the antifriction plate, the pressing plate and the support plate can obtain a larger contact surface.
Furthermore, the high-reliability asymmetric damping structure tensioning wheel is characterized in that the front end of the bearing adopts an outer ring dustproof structure, and the rear end of the bearing adopts a labyrinth dustproof structure.
The utility model has the beneficial effects that:
the PEEK sliding bearing is adopted, the wear resistance of the PEEK sliding bearing is greatly improved compared with that of PA46, the PEEK sliding bearing hardly absorbs water and deforms, and the situation that a tensioning wheel is locked due to the water absorption expansion of the PEEK sliding bearing is avoided; thereby greatly improving the high reliability of the tensioning wheel;
the support plate is pressed on the pressing plate of the fixing piece by utilizing the pressure after the spring is compressed, a wear-resistant piece antifriction plate is designed between the support plate and the pressing plate, a clamping ring and a plastic clamping ring are designed between the spring and the supporting sleeve, and a dustproof antifriction sleeve ring is arranged between the support plate and the supporting sleeve, so that the support plate of the rotating piece and all the wear-resistant pieces are completely and seamlessly attached.
Compared with the traditional asymmetric tensioning wheel, the anti-abrasion dustproof ferrule of the large contact surface wear-resistant part which is completely attached to the support plate of the rotating part is added, so that the structural tensioning wheel is more wear-resistant, more reliable and more stable;
the contact area between the antifriction piece and the opposite friction piece support plate and the central shaft sleeve is greatly increased, so that the specific pressure value of the antifriction piece is reduced to the greatest extent;
the wear-resistant part material is replaced by a high wear-resistant material, so that the wear resistance of the wear-resistant part is greatly improved.
The tensioning wheel adopts double-row angular contact ball bearings, and two single-row deep groove ball bearings are adopted relatively, so that the form and position tolerance can be well ensured, and the service life of the tensioning wheel is longer; the bearing front end has adopted outer lane dustproof construction, and the bearing rear end has adopted labyrinth dustproof construction, guarantees that the bearing is clean in during operation environment and does not have this structure reliability height, advantage such as pollution-free, with lower costs, simple structure, convenient operation to improve take-up pulley life greatly. .
Drawings
FIG. 1 is a high reliability asymmetric damping structure tensioner;
in the figure: 1-supporting sleeve, 2-supporting plate, 3-center shaft sleeve, 4-spring, 5-antifriction dustproof collar, 6-plastic snap ring, 7-snap ring, 8-slide bearing, 9-belt pulley, 10-shaft bolt, 11-shield, 12-retainer ring, 13-bearing, 14-antifriction plate, 15-clamp plate.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.
The utility model relates to a high-reliability asymmetric damping structure tensioning wheel, which comprises: the anti-friction device comprises a supporting sleeve 1, a supporting plate 2, a central shaft sleeve 3, a spring 4, a dustproof antifriction ring 5, a plastic clamping ring 6, a clamping ring 7, a sliding bearing 8, a belt pulley 9, a shaft bolt 10, a dustproof cover 11, a retainer ring 12, a bearing 13, an antifriction plate 14 and a pressing plate 15.
The support sleeve 1 is fixed on the engine and is in knurled interference fit with the central shaft sleeve 3, meanwhile, the pressing plate 15 is in knurled interference fit with the central shaft sleeve 3, and all parts are connected into a whole through the three parts.
One of the action ends of the support plate 2 is provided with a limiting block connected with a spring 4, so that the requirement of the tensioning wheel for providing torque is met; the other action end is provided with a step for positioning the bearing 13 so as to ensure the normal rotation of the bearing outer skin belt pulley; the support plate 2 is provided with an upper end face, a lower end face and a wear-resistant piece, wherein one end face is provided with a dustproof antifriction ferrule 5, and the other end face is provided with a antifriction plate 14.
An antifriction plate 14 is arranged between the pressing plate 15 and the support plate 2 and is used for reducing friction between the pressing plate 15 and the support plate 2
A dustproof antifriction ferrule 5 is arranged between the support plate 2 and the support sleeve 1, so that friction between the support plate 2 and the support sleeve 1 is reduced and dust is prevented from entering.
The support plate 2 is connected with the central shaft sleeve 3 through the sliding bearing 8, so that the sliding bearing 8 and an inner hole of the support plate 2 are in interference fit around the central shaft sleeve in a rotary motion mode, and the sliding bearing 8 is made of PEEK material with better wear resistance than the traditional PA 46.
The spring 4 is nested on the support plate 2 and the central shaft sleeve 3, the outer side of the spring is wrapped by the support sleeve, one end of the spring is connected with the support sleeve 1, and the other end of the spring is connected with the support plate 2.
A plastic clamping ring 6 and a clamping ring 7 are nested between the spring 4 and the support sleeve 1, friction between the spring 4 and the support sleeve 1 can be reduced by the plastic clamping ring 6, and the clamping ring 7 is used as a carrier of the plastic clamping ring 6 and can provide protection for the plastic clamping ring 6.
The pulley 9 is mounted on the other end of the support plate 2 and is fixed to the support plate 2 by a bearing 13 and a shaft bolt 10.
The outer end face of the belt pulley 9 is provided with a dust cover 11, the outer end face of the bearing 13 is provided with a retainer ring 12, and the inner side of the belt pulley 9 is provided with a corresponding groove for placing the retainer ring 12.
According to the utility model, the sliding bearing made of PEEK material is used for replacing the sliding bearing made of PA46 material, so that deflection of the support plate caused by abrasion of the sliding bearing is solved, the material hardly absorbs water and deforms, and the condition that the tensioning wheel is locked due to water absorption expansion of the sliding bearing is avoided. Wear-resisting parts are additionally arranged on a plurality of contact surfaces easy to wear, so that the wear resistance of the tensioning wheel is improved, meanwhile, the wear-resisting parts and the dust-proof parts act together, and the advantages of clean environment, no pollution, high reliability, low cost, simple structure, convenience in operation and the like of the structure of the bearing during working are also ensured, so that the service life of the tensioning wheel is greatly prolonged.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A high reliability asymmetric damping structure take-up pulley, its characterized in that: the anti-friction and dustproof device comprises a supporting sleeve (1), a supporting plate (2), a central shaft sleeve (3), a spring (4), an anti-friction and dustproof ferrule (5), a plastic clamping ring (6), a clamping ring (7), a sliding bearing (8), a belt pulley (9), a shaft bolt (10), a dustproof cover (11), a retainer ring (12), a bearing (13), an anti-friction plate (14) and a pressing plate (15); the central shaft sleeve (3) is fixed with the supporting sleeve (1) and the pressing plate (15) through knurling at two ends; one end of the spring (4) is fixed with a spring limiting block of the supporting sleeve (1), and the other end of the spring is connected with a spring limiting block of the supporting plate (2) to ensure rotatability; the rotating piece support plate (2) is pressed in with the sliding bearing (8) in an interference fit manner; one end of the rotating piece support plate (2) is provided with a step for positioning a bearing (13); a limiting groove is formed in the support plate (2), and a clamping ring (7) and a plastic clamping ring (6) are arranged on the limiting groove; the clamping ring (7) and the plastic clamping ring (6) are fixed between the spring (4) and the supporting sleeve (1).
2. A high reliability asymmetric damping structure tensioner according to claim 1, characterized in that the support sleeve (1) is fixed to the engine.
3. The high-reliability asymmetric damping structure tensioning wheel according to claim 1, wherein the support plate (2) is pressed on the pressing plate (15) by utilizing the pressure of the back shrinkage of the spring (4), a wear-resistant part wear-resistant plate (14) is designed between the support plate (2) and the pressing plate (15), a clamping ring (7) and a plastic clamping ring (6) are designed between the spring (4) and the support sleeve (1), and a wear-resistant dustproof ferrule (5) is arranged between the support plate (2) and the support sleeve (1), so that the support plate (2) of the rotating part is completely in seamless fit with all wear-resistant parts.
4. The high-reliability asymmetric damping structure tensioning wheel according to claim 1, wherein the bearing (13) adopts a double-row angular contact ball bearing, and two single-row deep groove ball bearings are adopted relatively, so that better form and position tolerance can be ensured.
5. The high-reliability asymmetric damping structure tensioning wheel according to claim 1, wherein the aperture of the antifriction plate (14) is slightly larger than the outer diameter of the central shaft sleeve (3), so that a larger contact surface is obtained between the antifriction plate (14) and the pressing plate (15) and between the antifriction plate and the support plate (2).
6. The high-reliability asymmetric damping structure tensioning wheel according to claim 1, wherein the front end of the bearing (13) adopts an outer ring dustproof structure, and the rear end of the bearing adopts a labyrinth dustproof structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322192633.4U CN220505701U (en) | 2023-08-15 | 2023-08-15 | High-reliability asymmetric damping structure tensioning wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322192633.4U CN220505701U (en) | 2023-08-15 | 2023-08-15 | High-reliability asymmetric damping structure tensioning wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220505701U true CN220505701U (en) | 2024-02-20 |
Family
ID=89873822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322192633.4U Active CN220505701U (en) | 2023-08-15 | 2023-08-15 | High-reliability asymmetric damping structure tensioning wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220505701U (en) |
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2023
- 2023-08-15 CN CN202322192633.4U patent/CN220505701U/en active Active
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