Tensioning wheel with high-adaptability structure

Abstract

The utility model relates to a tensioning wheel with a high-adaptability structure in the field of tensioning wheels. The tensioning wheel comprises a supporting plate, a first clamping ring, a second clamping ring, a sliding bearing, a center shaft sleeve, a positioning bolt, a spring, a center bolt, a supporting sleeve, a belt pulley, a deep groove ball bearing, a shaft bolt, a dustproof cover and a check ring. According to the utility model, the positioning bolt structure is added, and the mounting angle of the tensioning wheel is adjusted by utilizing the adjustability of the positioning bolt; the torque value of the tensioning wheel is adjusted by replacing springs with different diameters; by replacing belt wheels with different diameters and widths, the adaptability of belt installation of the tensioning wheel in different wheel trains is achieved; by replacing the central shaft sleeves with different heights, the adaptability of the tensioning wheel in different wheel trains in the mounting height is realized; the front end of the bearing adopts a metal full-sealing dustproof cover full-sealing dustproof structure, and the rear end of the bearing adopts a labyrinth dustproof structure, so that the service life of the tensioning wheel is prolonged, and the reliability of the tensioning wheel is improved.

Description

Technical Field

[0001] This utility model relates to the field of tensioning wheels, and in particular to a tensioning wheel with a high adaptability structure. Background Technology

[0002] Multi-ribbed belts are increasingly used in the front-end pulley system of engines. However, belt drives are friction drives, and as time goes on, the belt will gradually stretch and wear. In order to ensure that the engine can transmit energy to each front-end accessory stably, efficiently and reliably, and to ensure that the belt tension changes within a relatively stable range, a tensioning device has been added to the front-end pulley system accessories.

[0003] Traditional fixed tensioning devices cannot automatically compensate for belt elongation. When belt tension is insufficient, the accessory belt drive system will experience problems such as low transmission efficiency and high noise. An automatic tensioning pulley was developed to ensure that the belt tension varies within a relatively stable range as the belt gradually elongates and wears, ensuring that the engine can stably, efficiently, and reliably transmit energy to various front-end accessories. However, the following problems exist:

[0004] 1. Fixed installation angle: The support sleeve is fixed with a pin structure, which makes it impossible to adjust the installation angle of the tension wheel, making it difficult to adapt to the space and belt routing requirements of different wheel system layouts;

[0005] 2. Single tension: It is usually equipped with a spring of fixed specification, and the tension it provides is not adjustable, which cannot meet the different belt tension requirements of different pulley systems;

[0006] 3. Poor pulley adaptability: The pulley size is fixed and cannot be replaced according to the actual belt specifications or transmission requirements, resulting in low versatility;

[0007] 4. The installation height is not adjustable: the height of the center bushing is fixed and lacks adjustment capability, making it difficult to adapt to the differences in the position of the mounting base in different gear trains;

[0008] 5. Insufficient dustproof seal: The bearing's dustproof design is limited, making it susceptible to contaminants in the working environment, leading to premature wear and failure of the bearing, affecting its service life and reliability. Utility Model Content

[0009] The purpose of this invention is to address the problems of the prior art by proposing a tensioning wheel with a high adaptability structure.

[0010] A highly adaptable tensioning wheel includes a support plate, a first retaining ring, a second retaining ring, a sliding bearing, a central bushing, a positioning bolt, a spring, a central bolt, a support sleeve, a pulley, a deep groove ball bearing, a shaft bolt, a dust cover, and a retaining ring.

[0011] The support plate and the support sleeve are fixedly connected by a central shaft sleeve;

[0012] One end of the spring is connected to the support sleeve, and the other end is connected to the support plate;

[0013] The support plate and the central bushing are press-fitted with a sliding bearing, so that the support plate can rotate around the center of the central bushing.

[0014] A first retaining ring is also provided between the support sleeve and the spring;

[0015] The second retaining ring is fitted onto the first retaining ring;

[0016] The positioning bolt adjusts the installation angle of the tensioning wheel;

[0017] The center bolt fixes the center position of the tensioning wheel;

[0018] The pulley is connected to the deep groove ball bearing, and the retaining ring limits the pulley.

[0019] The support plate and the pulley are connected by shaft bolts.

[0020] Among them, the first retaining ring is a dustproof and wear-reducing collar that ensures the high wear resistance and high reliability of the tensioning wheel;

[0021] Among them, the first retaining ring reduces wear between the support sleeve and the spring;

[0022] The first retaining ring is made of plastic.

[0023] Furthermore, a highly adaptable tensioning wheel structure is provided with a dustproof and wear-reducing collar, a spring limiting block, and a bearing positioning step on the upper surface of the support plate.

[0024] The bearing positioning step ensures the normal rotation of the outer pulley of the bearing.

[0025] Furthermore, a high-adaptability tensioning wheel is provided, wherein one end of the spring is fixed to the spring limiting block of the support sleeve, and the other end is connected to the spring limiting block of the support plate.

[0026] The spring is connected to the spring limit block of the support plate to ensure rotation, thereby meeting the torque requirement of the tensioning wheel.

[0027] Furthermore, a highly adaptable tensioning wheel structure is provided, wherein the support plate and the support sleeve are fixedly connected by knurling at both ends of the central bushing.

[0028] The central bushing and the support bushing are joined together by knurling.

[0029] Furthermore, a highly adaptable tensioning pulley structure is provided, wherein the pulley contacts the belt to tension the belt;

[0030] The deep groove ball bearing drives the pulley to roll;

[0031] The support sleeve is fixed to the engine.

[0032] Furthermore, a highly adaptable tensioning wheel structure is provided, wherein the dust cover includes a fully sealed metal dust cover and a labyrinth-type dust cover;

[0033] The fully sealed metal dust cover is located at the front end of the sliding bearing;

[0034] The labyrinth-style dust cover is located at the rear end of the sliding bearing.

[0035] Furthermore, a highly adaptable tensioning wheel structure is provided, wherein the spring is a detachable structure, and the torque value of the tensioning wheel can be adjusted by replacing springs of different diameters.

[0036] Furthermore, a highly adaptable tensioning pulley structure is provided, wherein the pulley is a detachable structure, and the tensioning pulley can be adjusted to adapt to different belt types in different pulley systems by replacing pulleys of different diameters and widths.

[0037] Furthermore, a highly adaptable tensioning wheel structure is provided, wherein the central bushing is a detachable structure, and the tensioning wheel can be adjusted to adapt to the installation height in different wheel systems by replacing the central bushings of different heights.

[0038] The beneficial effects of this utility model are as follows:

[0039] 1. Compared with the traditional tensioning wheel, the traditional pin structure on the support sleeve has been eliminated, and a positioning bolt structure has been added. The adjustableness of the positioning bolt can be used to adjust the installation angle of the tensioning wheel, so as to achieve the adaptability of the installation angle of the tensioning wheel in different gear trains.

[0040] 2. By replacing springs of different diameters, the torque value of the tensioning wheel can be adjusted to achieve the adaptability of the tensioning wheel to the tension requirements in different gear trains;

[0041] 3. By replacing pulleys of different diameters and widths, the adaptability of the tensioner pulley for belt installation in different pulley systems can be achieved;

[0042] 4. By replacing the center bushings of different heights, the installation height of the tensioning wheel in different gear trains can be adapted.

[0043] 5. The front end of the bearing adopts a fully sealed metal dust cover and a fully sealed dustproof structure, while the rear end of the bearing adopts a labyrinth dustproof structure, which improves the service life and reliability of the tensioner. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of a highly adaptable tensioning wheel.

[0045] Figure 2This is a front view of a highly adaptable tensioning wheel.

[0046] In the diagram: 1-Support plate, 2-First retaining ring, 3-Second retaining ring, 4-Sliding bearing, 5-Central bushing, 6-Dustproof and anti-friction ring, 7-Positioning bolt, 8-Spring, 9-Central bolt, 10-Support sleeve, 11-Pulley, 12-Deep groove ball bearing, 13-Shaft bolt, 14-Dust cover, 15-Retaining ring. Detailed Implementation

[0047] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0048] Specific Implementation Example 1: High-Adaptability Structure Tensioning Wheel

[0049] As attached Figure 1 As shown, a high-adaptability tensioning wheel includes a support plate 1, a first retaining ring 2, a second retaining ring 3, a sliding bearing 4, a central bushing 5, a positioning bolt 7, a spring 8, a central bolt 9, a support sleeve 10, a pulley 11, a deep groove ball bearing 12, a shaft bolt 13, a dust cover 14, and a retaining ring 15.

[0050] The support plate 1 and the support sleeve 10 are fixedly connected by the central shaft sleeve 5. One end of the spring 8 is connected to the support sleeve 10 and the other end is connected to the support plate 1. The support plate 1 and the central shaft sleeve 5 are press-fitted with a sliding bearing 4 so that the support plate 1 rotates around the center of the central shaft sleeve 5.

[0051] A first retaining ring 2 is provided between the support sleeve 10 and the spring 8, and a second retaining ring 3 is fitted onto the first retaining ring sleeve 2.

[0052] Positioning bolt 7 adjusts the installation angle of the tensioning wheel, and center bolt 9 fixes the center position of the tensioning wheel.

[0053] The pulley 11 is connected to the deep groove ball bearing 12, the retaining ring 15 limits the pulley 11, and the support plate 1 and the pulley 11 are connected by the shaft bolt 13.

[0054] The upper end face of the support plate 1 is provided with a dustproof and wear-reducing sleeve 6, a spring limit block, and a bearing positioning step.

[0055] One end of the spring 8 is fixed to the spring limiting block of the support sleeve 10, and the other end is connected to the spring limiting block of the support plate 1.

[0056] The support plate 1 and the support sleeve 10 are fixedly connected by knurling at both ends of the central bushing 5. The central bushing and the support sleeve 10 are connected as one unit by knurling.

[0057] The pulley 11 contacts the belt, tensions the belt, and the deep groove ball bearing 12 drives the pulley 11 to roll. The support sleeve 10 is fixed to the engine.

[0058] The dust cover 14 includes a fully sealed metal dust cover and a labyrinth dust cover. The fully sealed metal dust cover is located at the front end of the sliding bearing 4, and the labyrinth dust cover is located at the rear end of the sliding bearing 4.

[0059] Spring 8 is a detachable structure. By replacing springs 8 with different diameters, the torque value of the tensioning wheel can be adjusted. Pulley 11 is a detachable structure. By replacing pulleys 11 with different diameters and widths, the tensioning wheel can be adjusted to adapt to the belt type in different gear trains. Center bushing 5 is a detachable structure. By replacing center bushings 5 ​​with different heights, the tensioning wheel can be adjusted to adapt to the installation height in different gear trains.

[0060] Specific Embodiment Two: Function of the High-Adaptability Structure Tensioner

[0061] Support plate 1: Support plate 1 is equipped with a spring limit block to meet the torque requirements of the tensioning wheel; it is equipped with a bearing positioning step to ensure the normal rotation of the outer belt pulley 11 of the bearing; the upper end face of support plate 1 is equipped with a dustproof and wear-reducing sleeve 6, and a plastic retaining ring is also installed between the support sleeve 10 and the spring 8 to ensure the high wear resistance and high reliability of the tensioning wheel.

[0062] First retaining ring 2: The friction reduction between the support sleeve 10 and the spring 8 is achieved by a plastic retaining ring;

[0063] Second retaining ring 3: The carrier of the plastic retaining ring, used in conjunction with the plastic retaining ring to provide protection for the plastic retaining ring;

[0064] Sliding bearing 4: connects support plate 1 and central bushing 5, so that support plate 1 rotates around the center of central bushing 5;

[0065] Central bushing 5: connects the support plate 1 and the sliding bearing 4, so that the support plate 1 rotates around the center of the central bushing 5; and connects the support sleeve 10 of the tensioning wheel through a knurled interference fit, thus connecting all parts into one piece;

[0066] Dustproof and wear-reducing sleeve 6: Dustproof and wear-reducing between support plate 1 and support sleeve 10;

[0067] Positioning bolt 7: Adjust the installation angle of the tensioning wheel and fix the initial position of the tensioning wheel;

[0068] Spring 8: The cylindrical spring has limit blocks at both ends. One end is connected to the support sleeve 10 and the other end is connected to the support plate 1, so as to meet the torque requirements of the tension wheel and realize the automatic adjustment of belt tension by the tension wheel.

[0069] Center bolt 9: Fixes the center position of the tension wheel;

[0070] Support sleeve 10: The support sleeve 10 is fixed on the engine and connected to the support plate 1 through the central shaft sleeve 5. All parts are connected as one piece by knurling.

[0071] Pulley 11: Contacts the belt and tensions the belt;

[0072] Deep groove ball bearing 12: The pulley rolls 11, increasing bearing life;

[0073] Shaft bolt 13: connects support plate 1 and pulley 11;

[0074] Dust cover 14: Dustproof;

[0075] Retaining ring 15: Limiting pulley 11.

[0076] Specific Implementation Principle of High-Adaptability Tensioner Structure (Version 3)

[0077] First, the support sleeve 10 and the support plate 1 are fixed together by the knurling at both ends of the central shaft sleeve 5. One end of the spring 8 is fixed to the spring limiting block of the support sleeve 10, and the other end is connected to the spring limiting block of the support plate 1 to ensure rotation, thereby meeting the torque requirement of the tension wheel. The support plate 1 and the central shaft sleeve 5 are press-fitted with the sliding bearing 4, so that the outer ring of the support plate 1 and the sliding bearing 4 become a whole, allowing it to rotate around the central shaft sleeve 5. The installation angle of the tension wheel is adjusted by the positioning bolt 7. One end of the support plate 1 is provided with a bearing positioning step for the deep groove ball bearing 12 to ensure the normal rotation of the pulley 11 outside the bearing. The central shaft 5 and the support sleeve 10 are connected together by knurling.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high fit structure tension pulley, characterized by, Includes support plate (1), first retaining ring (2), second retaining ring (3), sliding bearing (4), central bushing (5), positioning bolt (7), spring (8), central bolt (9), support sleeve (10), pulley (11), deep groove ball bearing (12), shaft bolt (13), dust cover (14), and retaining ring (15); The support plate (1) and the support sleeve (10) are fixedly connected by the central bushing (5); One end of the spring (8) is connected to the support sleeve (10), and the other end is connected to the support plate (1); The support plate (1) and the central bushing (5) are press-fitted together with a sliding bearing (4) so ​​that the support plate (1) rotates around the center of the central bushing (5). A first retaining ring (2) is also provided between the support sleeve (10) and the spring (8); The second retaining ring (3) is fitted onto the first retaining ring (2); The positioning bolt (7) adjusts the installation angle of the tensioning wheel; The center bolt (9) fixes the center position of the tensioning wheel; The pulley (11) is connected to the deep groove ball bearing (12), and the retaining ring (15) limits the pulley (11). The support plate (1) and the pulley (11) are connected by shaft bolts (13).

2. The high conformability structure tensioner of claim 1, wherein, The upper end face of the support plate (1) is provided with a dustproof and wear-reducing sleeve (6), a spring limiting block, and a bearing positioning step.

3. The high conformability structure tensioner of claim 2, wherein, One end of the spring (8) is fixed to the spring limiting block of the support sleeve (10), and the other end is connected to the spring limiting block of the support plate (1).

4. The high conformability structure tensioner of claim 1, wherein, The support plate (1) and the support sleeve (10) are fixedly connected by knurling at both ends of the central bushing (5).

5. The high conformability structure tensioner of claim 1, wherein, The pulley (11) contacts the belt and tensions the belt; The deep groove ball bearing (12) drives the pulley (11) to roll; The support sleeve (10) is fixed to the engine.

6. The high conformability structure tensioner of claim 1, wherein, The dust cover (14) includes a fully sealed metal dust cover and a labyrinth dust cover; The fully sealed metal dust cover is located at the front end of the sliding bearing (4); The labyrinth-style dust cover is located at the rear end of the sliding bearing (4).

7. The high conformability structure tensioner of claim 1, wherein, The spring (8) is a detachable structure, and the torque value of the tension wheel can be adjusted by replacing springs (8) of different diameters.

8. The high conformability structure tensioner of claim 1, wherein, The pulley (11) is a detachable structure. By replacing pulleys (11) with different diameters and widths, the tension wheel can be adjusted to adapt to the belt type in different gear trains.

9. The high conformability structure tensioner of claim 1, wherein, The central bushing (5) is a detachable structure. By replacing the central bushing (5) with one of different heights, the tensioning wheel can be adjusted to adapt to the installation height in different gear trains.

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