Pulley disc lining structure
By setting oil storage tanks and oil-through holes in the bushings and shaft sleeves of the Priligy disc, the problem of insufficient lubricating grease reserves in the existing Priligy disc installation structure is solved, and a long-term lubrication supply is achieved, which improves the reliability and durability of the Priligy disc.
Patent Information
- Application Number
- CN202422176218.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The existing Priligy installation structure has low reliability and durability, and insufficient lubricating grease reserves, resulting in poor lubrication between the bushing and the shaft sleeve, prone to dry friction or foreign objects entering, resulting in abnormal wear and slanting.
A Puli disk bushing structure is designed, including setting up an oil storage tank in the bushing and shaft sleeve, and injecting lubricating grease during installation, so as to achieve a continuous supply of lubricating oil through the oil hole.
It greatly improves the reserves and supply sustainability of lubricating oil, ensures uniform and continuous lubrication between the bushing and the shaft sleeve, extends service life and maintenance cycle, and reduces maintenance costs.
Smart Images
Figure CN222910686U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of the structure of a variator pulley, in particular to a structure of a variator pulley bushing. Background Art
[0002] The variator pulley is actually a pulley. In the transmission system, a belt connects two discs. The outer disc is a fixed disc, and the inner disc is a variator pulley (also called a movable disc, which can move axially). The variator pulley beads (also called movable beads, which can move radially) are accessories in the variator pulley. There are 6 in total, which are separately installed in 6 chutes and are affected by the engine speed. If the vehicle speed increases, conversely, the engine speed decreases, the variator pulley beads move radially towards the axis, the force of the belt squeezed by the two disc plates decreases, the belt moves towards the center of the disc, the diameter of the driving disc decreases, the diameter of the driven disc increases, and the transmission ratio also decreases accordingly. At this time, the motorcycle speed also decreases accordingly.
[0003] In the current installation structure of the movable disc, the bushing used is powder metallurgy. There is a method of installing two short bushings from both ends of the shaft hole of the movable disc, and there is also a method of directly installing a long bushing in the shaft hole. Generally, lubricating grease needs to be coated on the bushing during installation. The lubricating grease remaining in the gap after installation lubricates the bushing and the shaft sleeve during subsequent work. Although the existing structure is simple and has a low cost, its reliability is low. The amount of lubricating grease remaining only in the gap is small. It is easy to have poor lubrication, dry friction between the bushing and the shaft sleeve, or abnormal wear after foreign matters such as flying dust enter, resulting in a larger clearance between the shaft sleeve and the bushing and a large deflection of the movable disc, and ultimately abnormal wear of the variator pulley beads, the side parts of the ramp plate, the ramp plate, and the belt. Summary of the Utility Model
[0004] Aiming at the above deficiencies existing in the prior art, the purpose of the utility model is to provide a structure of a variator pulley bushing to solve the problems of poor reliability and durability of the rotation of the movable disc in the prior art.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is as follows: A structure of a variator pulley bushing includes a movable disc. A shaft hole is provided at the center of the movable disc. A bushing is fixedly sleeved in the shaft hole. A shaft sleeve is rotatably sleeved in the bushing. A drive shaft for fixedly installing and driving the rotation of the fixed disc of the variator pulley is arranged in the shaft sleeve. Wherein, the bushing, the shaft sleeve, and the shaft hole are coaxially arranged. A first oil storage groove is provided on the inner wall of the bushing around its circumference. A second oil storage groove is provided on the inner wall of the shaft sleeve around its circumference. An oil through hole penetrating the side wall of the shaft sleeve is provided at the bottom of the second oil storage groove.
[0006] As an optimization, the length of the bushing is less than the length of the shaft hole. Oil seals are installed at both ends of the shaft hole. The oil seals are arranged opposite to the end faces of the bushing, and the lip parts thereof are in contact with the outer side wall of the shaft sleeve.
[0007] As an optimization, a clamping groove is opened in the shaft hole corresponding to both ends of the bushing and surrounds the bushing, and a retaining ring is installed in the clamping groove, and the retaining ring can be against the end face of the bushing.
[0008] As an optimization, the retaining ring is located between the oil seal and the bushing.
[0009] As an optimization, the oil hole is staggered with the first oil storage tank so that the oil hole is communicated with the gap between the bushing and the shaft sleeve.
[0010] As an optimization, there are two oil holes, which are symmetrically distributed on opposite sides of the sleeve.
[0011] Compared with the prior art, the utility model has the following advantages: by arranging a first oil storage tank in the bushing and a second oil storage tank in the shaft sleeve, lubricating grease is injected into the oil storage tank during installation, thus greatly improving the storage capacity of the lubricating oil; during the operation of the movable disk, the lubricating grease in the first oil storage tank can quickly lubricate the gap between the bushing and the shaft sleeve; the lubricating grease in the second oil storage tank can enter the gap through the oil hole to make up for the loss of lubricating oil in the gap, thereby ensuring a long-term supply of lubricating grease, extending the service life and maintenance cycle, and reducing the maintenance cost. At the same time, the oil storage tank has a simple structure, is easy to process, does not increase too much cost, and is easy to implement and promote. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] In the figure: 1 moving plate, 2 bushing, 3 shaft sleeve, 4 first oil storage tank, 5 second oil storage tank, 6 oil hole, 7 oil seal, 8 retaining ring. DETAILED DESCRIPTION
[0014] The utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0016] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the inventive product is customarily placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0017] Embodiment: Refer to Figure 1, a pulley bushing structure, including a movable disk 1, a shaft hole is provided at the center of the movable disk 1, a bushing 2 is fixedly sleeved in the shaft hole, a shaft sleeve 3 is rotatably sleeved in the bushing 2, and a drive shaft for fixedly installing and rotating a fixed disk of a drive pulley is arranged in the shaft sleeve 3. The movable disk 1 rotates on the drive shaft or moves axially along the drive shaft; wherein, the bushing 2, the shaft sleeve 3 and the shaft hole are coaxially arranged, and a first oil storage groove 4 is provided on the inner wall of the bushing 2 around its circumference, and a second oil storage groove 5 is provided on the inner wall of the shaft sleeve 3 around its circumference, so as to form an oil storage cavity between the shaft sleeve 3 and the drive shaft, and an oil passing hole 6 penetrating the side wall of the shaft sleeve 3 is provided at the bottom of the second oil storage groove 5. The oil passing hole 6 is arranged at an interval from the first oil storage groove 4, so that the oil passing hole 6 communicates with the gap between the bushing 2 and the shaft sleeve 3. There are two oil passing holes 6, which are symmetrically distributed on the opposite sides of the shaft sleeve 3. Specifically, since the shaft sleeve 3 is generally thicker and larger in size, the second oil storage groove 5 can be set to have a larger capacity according to actual needs. In this embodiment, the width of the second oil storage groove 5 is about 30 mm and the depth is about 1 mm. While the bushing 2 is thinner and smaller in size, so the capacity of the first oil storage groove 4 is smaller. In this embodiment, the width of the first oil storage groove 4 is about 10 mm and the depth is about 0.5 mm. In this way, lubricating grease is supplied to the gap between the shaft sleeve 3 and the bushing 2 through the first oil storage groove 4 and the second oil storage groove 5, which can ensure uniform and continuous lubrication and good lubrication. At the same time, the two oil storage grooves have a large capacity, which can supply lubricating oil for a long time, extend the maintenance period and service life.
[0018] In the utility model, by arranging the first oil storage groove 4 in the bushing 2 and the second oil storage groove 5 in the shaft sleeve 3, and injecting lubricating grease into the oil storage grooves during installation, in this way, the storage capacity of the lubricating oil is greatly improved. During the rotation of the movable disk 1, the lubricating grease in the first oil storage groove 4 can lubricate the gap between the bushing 2 and the shaft sleeve 3, and at the same time, the lubricating grease in the second oil storage groove 5 can enter the gap through the oil passing hole 6, so as to ensure the supply of lubricating grease for a long time, extend the service life and maintenance period, reduce the maintenance cost. At the same time, the structure of the oil storage groove is simple, easy to process, does not increase too much cost, and is easy to implement and promote.
[0019] In addition, in order to improve the sealing performance of the gap between the bushing 2 and the shaft sleeve 3, prevent the lubricating grease from overflowing or external dust from entering the gap, in this embodiment, the length of the bushing 2 is less than the length of the shaft hole, and oil seals 7 are installed at both ends of the shaft hole. The oil seals 7 are arranged opposite to the end faces of the bushing 2, and the lip parts thereof are attached to the outer side wall of the shaft sleeve 3, so as to seal the gap.
[0020] Meanwhile, in order to prevent the circumferential movement of the bushing 2 during operation, in this embodiment, a groove is provided around the axis hole corresponding to both ends of the bushing 2, and a retaining ring 8 is installed in the groove. The retaining ring 8 can abut against the end face of the bushing 2. The retaining ring 8 is located between the oil seal 7 and the bushing 2, so as to better limit the bushing 2 and improve the operation stability.
[0021] In summary, although the structure of the present utility model is more complex than the prior art and the cost is slightly higher, its reliability, lubrication effect and durability have been greatly improved, and it has good application prospects.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present utility model without departing from the purpose and scope of the present technical solutions shall be covered by the scope of the claims of the present utility model.
Claims
1. A Puli disk bushing structure, comprising a moving disk and a shaft sleeve, wherein a shaft hole is provided at the center of the moving disk, and the shaft sleeve is coaxially arranged in the shaft hole; characterized in that: A bushing is fixedly provided in the shaft hole and rotatably sleeved on the shaft sleeve; a first oil storage groove is provided on the inner wall of the bushing and surrounds it, a second oil storage groove is provided on the inner wall of the shaft sleeve and surrounds it, and an oil hole penetrating the side wall of the shaft sleeve is provided at the bottom of the second oil storage groove.
2. A Pulley disk bushing structure according to claim 1, characterized in that: The length of the bushing is smaller than that of the shaft hole, and oil seals are installed at both ends of the shaft hole. The oil seal is arranged opposite to the end face of the bushing, and its lip portion fits with the outer wall of the sleeve.
3. The Pulley disk bushing structure according to claim 1, characterized in that: A clamping groove is provided in the shaft hole corresponding to the two ends of the bushing and surrounds the bushing. A retaining ring is installed in the clamping groove and can abut against the end surface of the bushing.
4. A Pulley disk bushing structure according to claim 3, characterized in that: The retaining ring is located between the oil seal and the bushing.
5. The Pulley disk bushing structure according to claim 1, characterized in that: The oil hole is spaced apart from the first oil storage tank so that the oil hole is communicated with the gap between the bushing and the shaft sleeve.
6. The Pulley disk bushing structure according to claim 1, characterized in that: There are multiple oil holes, which are evenly distributed around the shaft sleeve.