CN215334233U - Novel belt tensioner of asymmetric damping structure of high performance - Google Patents
Novel belt tensioner of asymmetric damping structure of high performance Download PDFInfo
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- CN215334233U CN215334233U CN202121762723.7U CN202121762723U CN215334233U CN 215334233 U CN215334233 U CN 215334233U CN 202121762723 U CN202121762723 U CN 202121762723U CN 215334233 U CN215334233 U CN 215334233U
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Abstract
The utility model discloses a novel belt tensioning pulley with a high-performance asymmetric damping structure, which comprises a support plate (1), wherein the support plate (1) is provided with a first mounting end and a second mounting end, the first mounting end is clamped with a support sleeve (2), the second mounting end is sleeved with a belt pulley (3), a central shaft sleeve (4) penetrates between the support plate (1) and the support sleeve (2), a needle roller bearing (5) is arranged between the central shaft sleeve (4) and the support plate (1), a mounting cavity is formed between the first mounting end and the support sleeve (2), a spring (6) is arranged between the support plate (1) and the support sleeve (2), the spring is sleeved on the first mounting end and positioned in the mounting cavity, and the belt pulley (3) is mounted on the second mounting end of the support plate (1) through a double-row angular contact ball bearing (7); the tensioning wheel also has the advantages of high reliability, lower cost, simple structure, convenient operation and long service life.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to a novel belt tensioning pulley with a high-performance asymmetric damping structure.
Background
The V-ribbed belt is widely applied in a front-end gear train of an engine, but the 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 transmit energy to each front-end accessory and ensure that the belt tension changes in a relatively stable area, a tensioning device (a tensioning wheel) is added to the front-end wheel train accessory. The traditional fixed type tensioning device cannot automatically compensate due to extension of the belt, when the belt tension is insufficient, the accessory belt transmission system has the problems of low transmission efficiency, high noise and the like, so that an automatic tensioning wheel is developed, the belt tension is ensured to change in a relatively stable area along with gradual extension and abrasion of the belt, and the engine is ensured to stably, efficiently and reliably transmit energy to each front-end accessory. However, with the development of the national six-engine in China, the use working condition of the engine is not only improved and optimized, but the traditional asymmetric damping tension wheel cannot meet the requirements of the national six-engine, and in use, the support plate in the existing tension wheel is found to be deflected due to the abrasion of the sliding bearing, so that inconvenience is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a novel belt tensioning pulley with a high-performance asymmetric damping structure, so that the defects are overcome.
The purpose of the utility model is realized by the following technical scheme:
a novel belt tensioning pulley with a high-performance asymmetric damping structure comprises a support plate.
The supporting plate is provided with a first mounting end and a second mounting end, a supporting sleeve is clamped on the first mounting end, a belt pulley is sleeved on the second mounting end, a central shaft sleeve is arranged between the supporting plate and the supporting sleeve in a penetrating mode, a needle bearing is arranged between the central shaft sleeve and the supporting plate, a mounting cavity is formed between the first mounting end and the supporting sleeve, a spring is arranged between the supporting plate and the supporting sleeve, the spring is sleeved on the first mounting end and located in the mounting cavity, and the belt pulley is mounted on the second mounting end of the supporting plate through a double-row angular contact ball bearing; and a snap ring and a plastic snap ring are arranged between the spring and the support sleeve.
Furthermore, a first step is formed at the joint of the support plate and the support sleeve, and an antifriction dustproof ferrule is arranged on the first step.
Furthermore, a pressing plate is embedded on the outer side surface of the support plate, and the pressing plate is sleeved on the central shaft sleeve.
Furthermore, an antifriction plate is arranged between the pressing plate and the support plate.
Further, the belt pulley and the support plate are fixed through an axle bolt.
Furthermore, the outside end joint of biserial angular contact ball bearing has the shield.
Furthermore, a check ring used for limiting the belt pulley is arranged between the double-row angular contact ball bearing and the dustproof cover.
Furthermore, the double-row angular contact ball bearing adopts two single-row deep groove ball bearings which are used in parallel.
The utility model has the beneficial effects that:
according to the novel belt tensioning wheel with the high-performance asymmetric damping structure, the needle roller bearing is arranged between the central shaft sleeve and the support plate, the support plate slides and rotates around the central shaft sleeve, the outer ring of the needle roller bearing is in interference fit with the hole of the support plate, the inner ring of the needle roller bearing is in interference fit with the outer diameter of the central shaft sleeve, the needle roller bearing is ultrahigh in strength and hardness and flexible in rolling of a needle roller, the rotation flexibility of the support plate is ensured, the deviation of the support plate caused by abrasion of a sliding bearing is completely solved, and therefore the high reliability of the tensioning wheel is improved; the support plate is pressed on the pressing plate by utilizing the pressure after the spring is compressed, the antifriction plate is arranged between the support plate and the pressing plate, the snap ring and the plastic snap ring are arranged between the spring and the support sleeve, and the dustproof antifriction sleeve ring is arranged between the support plate and the support sleeve, so that the support plate and all the wear-resistant parts are completely attached in a seamless manner; compared with the traditional asymmetric tensioning wheel, the anti-abrasion dustproof ferrule completely attached to the support plate is added, so that the tensioning wheel is more abrasion-resistant, reliable and stable; the contact area between the wear-reducing piece and the support plate and the central shaft sleeve is increased, so that the specific pressure value of the wear-resisting piece is reduced to the maximum extent; the double-row angular contact ball bearing of the tensioning wheel adopts two single-row deep groove ball bearings to be used in parallel, and the form and position tolerance of the double-row angular contact ball bearing can better guarantee the use of the bearing, so that the service life of the tensioning wheel is longer; the tensioning wheel also has the advantages of high reliability, lower cost, simple structure, convenient operation and long service life.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is a partially enlarged schematic view of the tension pulley.
In the figure, 1-support plate, 2-support sleeve, 3-belt pulley, 4-center shaft sleeve, 5-needle bearing, 6-spring, 7-double-row angular contact ball bearing, 8-snap ring, 9-plastic snap ring, 10-antifriction dustproof ferrule, 11-pressure plate, 12-antifriction plate, 13-shaft bolt, 14-dustproof cover and 15-retainer ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
In this embodiment, as shown in fig. 1 to 2, a novel belt tensioner with a high-performance asymmetric damping structure includes a support plate 1. The supporting plate 1 is provided with a first mounting end and a second mounting end, a supporting sleeve 2 is clamped on the first mounting end, a belt pulley 3 is sleeved on the second mounting end, a central shaft sleeve 4 penetrates between the supporting plate 1 and the supporting sleeve 2, a needle bearing 5 is arranged between the central shaft sleeve 4 and the supporting plate 1, a mounting cavity is formed between the first mounting end and the supporting sleeve 2, a spring 6 is arranged between the supporting plate 1 and the supporting sleeve 2, the spring is sleeved on the first mounting end and positioned in the mounting cavity, and the belt pulley 3 is mounted on the second mounting end of the supporting plate 1 through a double-row angular contact ball bearing 7; a snap ring 8 and a plastic snap ring 9 are arranged between the spring 6 and the support sleeve 2. The support sleeve 2 is fixed on an external engine, and the second mounting end is positioned at the right lower corner of the first mounting end.
In the embodiment, one end of the spring 6 is fixed with the spring limiting block of the support sleeve 2, and the other end of the spring 6 is connected with the spring limiting block of the support plate 1, so that the rotation performance is ensured, and the requirement that the tension wheel provides torque is met; the support plate 2 and the central shaft sleeve 4 are pressed into the needle bearing 5 in an interference fit manner, so that the support plate 1 and the outer ring of the needle bearing 5 are integrated and rotate around the central shaft sleeve 4, wherein one end of the support plate 1 is provided with a bearing positioning step to ensure the normal rotation of the belt pulley 3 outside the double-row angular contact ball bearing 7; support and seted up the spacing groove on the inner chamber inner wall of cover 2, snap ring 8 and plastics snap ring 9 are installed on this spacing groove, through the setting of plastics snap ring 9 for can the antifriction between spring 6 and the support cover 2, through the setting of snap ring 8, make plastics snap ring 9 have the carrier, and provide the protection for plastics snap ring 9.
By the technical scheme, the ultrahigh strength and hardness of the needle bearing 5 and the flexible rolling of the needle roller ensure the rotation flexibility of the support plate 1, and the deflection of the support plate 1 caused by the abrasion of a plastic sliding bearing is completely solved, so that the high reliability of the tensioning wheel is greatly improved; the contact area between the antifriction component and the relative friction component support plate 1 and the central shaft sleeve 4 is increased, so that the specific pressure value of the wear-resistant component is reduced to the maximum extent, and the wear resistance of the wear-resistant component is greatly improved; the support plate 1 is provided with an L-shaped dustproof structure, so that the support plate 1 and the wear-resistant part are ensured to be clean and pollution-free in working environment; dark double-row angular contact ball bearing 7 one end has adopted outer lane dustproof construction, and the other end has adopted labyrinth dustproof construction, guarantees that double-row angular contact ball bearing 7 is clean pollution-free in during operation environment, and this structure has the reliability height, the cost is lower, simple structure, convenient operation's advantage, still improves the life of take-up pulley.
The embodiment is further configured as follows: a first step is formed at the joint of the support plate 1 and the support sleeve 2, and an antifriction dustproof ferrule 10 is arranged on the first step.
Through the technical scheme, the clamping ring 8 and the plastic clamping ring 9 are fixed between the spring 6 and the support sleeve 2, and the antifriction dustproof ferrule 10 is fixed between the support sleeve 2 and the support plate 1, so that better damping and dustproof effects can be achieved.
The embodiment is further configured as follows: the outer side surface of the support plate 1 is embedded with a pressing plate 11, and the pressing plate 11 is sleeved on the central shaft sleeve 4.
In this embodiment, the left end and the right end of the outer wall of the central shaft sleeve 4 are respectively provided with a first mounting groove and a second mounting groove, the support sleeve 2 is sleeved on the second mounting groove, and the pressure plate 11 is sleeved on the first mounting groove; knurls are further arranged in the first mounting groove and the second mounting groove, and the supporting sleeve 2 and the pressing plate 11 are fixed together through the knurls at two ends of the central shaft sleeve 4.
The embodiment is further configured as follows: and a wear-reducing plate 12 is also arranged between the pressing plate 11 and the support plate 1. The wear reducing plate 12 is made of a wear-resistant material.
In the embodiment, the antifriction plate 12 is arranged between the support plate 1 and the pressure plate 11, so that the support plate 1 and all the wear-resisting plates are completely attached without gaps, and meanwhile, the damping of the tensioning wheel can be better provided.
The embodiment is further configured as follows: the belt pulley 3 and the support plate 1 are fixed through an axle bolt 13.
The embodiment is further configured as follows: and the outer side end of the double-row angular contact ball bearing 7 is clamped with a dustproof cover 14.
The embodiment is further configured as follows: a retainer ring 15 for limiting the belt pulley 3 is arranged between the double-row angular contact ball bearing 7 and the dust cover 14. The inner side end face of the retainer ring 15 is abutted to the double-row angular contact ball bearing 7 to form limiting, a limiting groove is formed in the inner wall of the belt pulley 3, and the retainer ring 15 is embedded in the limiting groove to limit the belt pulley 3.
The embodiment is further configured as follows: the double-row angular contact ball bearing 7 adopts two single-row deep groove ball bearings which are used in parallel. By adopting the two single-row deep groove ball bearings to be used in parallel, the use of the bearings can be better guaranteed due to form and position tolerance, so that the service life of the tension wheel is longer.
Through the technical scheme, the one end of extension board 1 is equipped with the step of double row angular contact ball bearing 7 location, in order to guarantee the normal rotation of the outer belt pulley 3 of double row angular contact ball bearing 7, wherein be connected through axle bolt 13 between belt pulley 3 and the extension board 1, interference fit impresses double row angular contact ball bearing 7 in the belt pulley 3, it is spacing that retaining ring 15 is adopted to double row angular contact ball bearing 7 one end, can prevent that belt pulley 3 from causing double row angular contact ball bearing 7 to drop in normal operating process, the dust cover 14 is equipped with to the double row angular contact ball bearing 7 other end, provide good operational environment for double row angular contact ball bearing 7.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Claims (8)
1. The utility model provides a novel belt tensioner of asymmetric damping structure of high performance, includes extension board (1), its characterized in that:
the supporting plate (1) is provided with a first mounting end and a second mounting end, a supporting sleeve (2) is clamped on the first mounting end, a belt pulley (3) is sleeved on the second mounting end, a central shaft sleeve (4) penetrates between the supporting plate (1) and the supporting sleeve (2), a needle bearing (5) is arranged between the central shaft sleeve (4) and the supporting plate (1), a mounting cavity is formed between the first mounting end and the supporting sleeve (2), a spring (6) is arranged between the supporting plate (1) and the supporting sleeve (2), the spring is sleeved on the first mounting end and located in the mounting cavity, and the belt pulley (3) is mounted on the second mounting end of the supporting plate (1) through a double-row angular contact ball bearing (7); a snap ring (8) and a plastic snap ring (9) are arranged between the spring (6) and the support sleeve (2).
2. The novel belt tensioner of claim 1, wherein: the supporting plate (1) and the supporting sleeve (2) are connected in a clamping mode to form a first step, and an anti-friction dustproof ferrule (10) is arranged on the first step.
3. The novel belt tensioner of claim 1, wherein: the outer side surface of the support plate (1) is embedded with a pressing plate (11), and the pressing plate (11) is sleeved on the central shaft sleeve (4).
4. The novel belt tensioner of claim 3, wherein: and a wear reducing plate (12) is also arranged between the pressing plate (11) and the support plate (1).
5. The novel belt tensioner of claim 1, wherein: the belt pulley (3) and the support plate (1) are fixed through an axle bolt (13).
6. The novel belt tensioner of claim 5, wherein: the outer side end of the double-row angular contact ball bearing (7) is clamped with a dustproof cover (14).
7. The novel belt tensioner of claim 6, wherein: and a check ring (15) used for limiting the belt pulley (3) is arranged between the double-row angular contact ball bearing (7) and the dustproof cover (14).
8. The novel belt tensioner of claim 1, wherein: the double-row angular contact ball bearing (7) adopts two single-row deep groove ball bearings to be used in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762723.7U CN215334233U (en) | 2021-07-30 | 2021-07-30 | Novel belt tensioner of asymmetric damping structure of high performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762723.7U CN215334233U (en) | 2021-07-30 | 2021-07-30 | Novel belt tensioner of asymmetric damping structure of high performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215334233U true CN215334233U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121762723.7U Active CN215334233U (en) | 2021-07-30 | 2021-07-30 | Novel belt tensioner of asymmetric damping structure of high performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215334233U (en) |
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2021
- 2021-07-30 CN CN202121762723.7U patent/CN215334233U/en active Active
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