Accessory gear train of engine tensioner

Abstract

The utility model belongs to the technical field of engines, in particular to an accessory gear train of an engine tensioner, which comprises a mounting seat, a tensioning arm, a rotating column and a belt pulley, the tensioning arm is fixedly connected to one side of the mounting seat, the rotating column is fixedly connected to the tensioning arm, and the belt pulley is rotatably connected to the rotating column in a matched manner. According to the accessory gear train of the engine tensioner, the oil storage bin is arranged on the belt pulley, lubricating oil can be stored in the oil storage bin, the cavity, the lower oil hole, the oil guide groove, the oil outlet pipe and the oil outlet hole are designed in a matched mode, the lubricating oil in the oil storage bin can be thrown out of the oil outlet hole under the action of centrifugal force, and therefore the lubricating oil can be thrown out. Lubricating oil splashes at the position of the cavity, can slide to the position of the lower oil hole through the through connection of the cavity and the lower oil hole, and then lubricates the position of the rotating hole through the oil guide groove, so that the lubricating effect is improved, abnormal sound generated by rotation of the belt pulley due to poor lubrication is avoided, and the lubrication maintaining time is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an accessory gear train of an engine tensioner. Background Art

[0002] The accessory gear train of the engine usually includes a pulley connected to the drive shaft, a pulley connected to the shaft of the motor, one or more pulleys for driving other accessories, and a belt and a tensioner for transmitting motion between the above pulleys. Among them, the tensioner is used to ensure the tension level of the belt to prevent slipping between the belt and the pulley. After long-term use, the accessory gear train of the existing engine tensioner will have a deterioration in the lubrication effect of the pulley, resulting in abnormal noise in the transmission, affecting the use effect, and the accessory gear train of the existing engine tensioner has a short lubrication maintenance period during the later lubrication. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides an accessory gear train of an engine tensioner, which solves the problems of poor lubrication effect and short maintenance time of the accessory gear train of the engine tensioner proposed in the above background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] The accessory gear system of the engine tensioner includes a mounting seat, a tensioning arm, a rotating column and a pulley. A tensioning arm is fixedly connected to one side of the mounting seat, a rotating column is fixedly connected to the tensioning arm, a pulley is rotatably connected to the rotating column, a slot is provided on the pulley, and a threaded sealing plug is threadedly connected to the slot of the pulley.

[0008] Furthermore, a rotating sleeve is sleeved on the rotating column, a bolt is threadedly connected to the rotating column, and the bolt is arranged to cooperate with the rotating sleeve.

[0009] Furthermore, a rotating hole is provided at the center of the pulley, and the rotating hole is rotatably connected to the rotating sleeve.

[0010] Furthermore, oil storage bins are symmetrically arranged in the cavity of the pulley, and there are six cavities in an annular array on the pulley between the two oil storage bins.

[0011] Furthermore, a lower oil hole is provided at one end of the cavity close to the rotating hole, and oil guide grooves are provided on the rotating holes at both ends of the lower oil hole.

[0012] Furthermore, an oil outlet pipe is fixedly connected to the pulley at the cavity position, and both ends of the oil outlet pipe are connected to the oil storage bins on both sides of the cavity. An oil outlet hole is opened at the center of the oil outlet pipe, and the opening of the oil outlet hole is away from the direction of the lower oil hole.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides an accessory gear train of an engine tensioner, which has the following

[0015] Beneficial effects:

[0016] The accessory gear train of the engine tensioner designed by the utility model can store lubricating oil inside by arranging an oil storage bin on the pulley, and can make the lubricating oil inside the oil storage bin be thrown out from the oil outlet hole by the effect of centrifugal force when the pulley is rotated by the belt through the cavity, and can slide to the lower oil hole through the through connection between the cavity and the lower oil hole, and then lubricate the rotating hole through the oil guide groove, so as to improve the lubrication effect, avoid abnormal noise caused by the rotation of the pulley due to poor lubrication, and improve the lubrication maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the mounting seat of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the pulley of the utility model.

[0020] In the figure: 1. mounting seat; 2. tensioning arm; 3. rotating column; 4. rotating sleeve; 5. bolt; 6. pulley; 7. threaded sealing plug; 8. rotating hole; 9. oil storage tank; 10. cavity; 11. lower oil hole; 12. oil guide groove; 13. oil outlet pipe; 14. oil outlet hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example

[0023] like Figure 1-3As shown, an accessory gear train of an engine tensioner proposed in an embodiment of the utility model comprises a mounting seat 1, a tensioning arm 2, a rotating column 3 and a pulley 6. The accessory gear train of the engine tensioner designed in this scheme can improve the lubrication effect of the pulley 6, avoid abnormal noise when the pulley 6 rotates due to poor lubrication, and can increase the maintenance time after lubrication and reduce the frequency of lubrication maintenance. A tensioning arm 2 is fixedly connected to one side of the mounting seat 1, and a rotating column 3 is fixedly connected to the tensioning arm 2. The rotating column 3 is rotatably connected to the pulley 6, and a slot hole is provided on the pulley 6. A threaded sealing plug 7 is threadedly connected at the slot hole of the pulley 6. The pulley 6 is rotatably connected to the rotating sleeve 4 through the rotating hole 8, and the rotating sleeve 4 is sleeved on the rotating column 3, and the position of the rotating sleeve 4 on the rotating column 3 is connected and fixed by a bolt 5, so that the pulley 6 is connected to the tensioning arm 2, which meets the installation and use requirements. By opening the threaded sealing plug 7, the lubricating oil can be added from the slot hole sealed by the threaded sealing plug 7 to the inside of the oil storage tank 9. The symmetrically arranged oil storage bins 9 are connected through the oil outlet pipes 13, so that the lubricating oil inside the two oil storage bins 9 can be used interchangeably. When the pulley 6 is rotated by the belt drive, the lubricating oil inside the oil storage bin 9 can be discharged from the oil outlet hole 14 opened on the oil outlet pipe 13 through the action of centrifugal force, and the lubricating oil will splash into the cavity 10 on the side away from the lower oil hole 11. When the pulley 6 stops rotating, due to the disappearance of centrifugal force, the lubricating oil will slide on the cavity 10 and slide to the lower oil hole 11. Then, it can be infiltrated into the rotating hole 8 through the oil guide groove 12, so that the lubrication effect between the rotating hole 8 and the rotating sleeve 4 is better, the next transmission effect is improved, and the friction damping is reduced. Through the coordinated design, the problem of abnormal noise caused by the rotation of the pulley 6 due to poor lubrication effect can be avoided, and the lubrication and maintenance of the pulley 6 in the later stage can be more convenient, the lubrication maintenance time after lubrication and maintenance is improved, and the use requirements are met. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0024] like Figure 2 As shown, in some embodiments, a rotating sleeve 4 is sleeved on the rotating column 3, and a bolt 5 is threadedly connected to the rotating column 3. The bolt 5 and the rotating sleeve 4 are configured to cooperate with each other. The design of the mounting seat 1 and the tensioning arm 2 satisfies the connection and use of the pulley 6 on the engine, thereby ensuring the use effect.

[0025] like Figure 3 As shown, in some embodiments, a rotating hole 8 is opened at the center of the pulley 6, and the rotating hole 8 is rotatably connected to the rotating sleeve 4, and the rotating hole 8 is used for being sleeved on the rotating column 3.

[0026] like Figure 3As shown, in some embodiments, oil storage bins 9 are symmetrically arranged in the cavity of the pulley 6, and six cavities 10 are arranged in a circular array on the pulley 6 between the two oil storage bins 9. A lower oil hole 11 is opened at one end of the cavity 10 close to the rotating hole 8, and oil guide grooves 12 are opened on the rotating holes 8 at both ends of the lower oil hole 11. An oil outlet pipe 13 is fixedly connected to the pulley 6 at the cavity 10, and both ends of the oil outlet pipe 13 are connected to the oil storage bins 9 on both sides of the cavity 10. An oil outlet hole 14 is opened at the center of the oil outlet pipe 13, and the opening of the oil outlet hole 14 is away from the direction of the lower oil hole 11. Through the design of the pulley 6, the transmission of the belt can be realized, and the rotation lubrication effect of the pulley 6 itself is improved, the maintenance time after lubrication maintenance is prolonged, and the use requirements are met.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An accessory gear train of an engine tensioner, comprising a mounting seat (1), a tensioning arm (2), a rotating column (3) and a pulley (6), characterized in that: A tensioning arm (2) is fixedly connected to one side of the mounting seat (1), a rotating column (3) is fixedly connected to the tensioning arm (2), a pulley (6) is rotatably connected to the rotating column (3), a slot hole is provided on the pulley (6), and a threaded sealing plug (7) is threadedly connected to the slot hole of the pulley (6).

2. The accessory gear train of the engine tensioner according to claim 1, characterized in that: A rotating sleeve (4) is sleeved on the rotating column (3), a bolt (5) is threadedly connected to the rotating column (3), and the bolt (5) and the rotating sleeve (4) are arranged in a cooperative and abutting manner.

3. The accessory gear train of the engine tensioner according to claim 1, characterized in that: A rotating hole (8) is provided at the center of the pulley (6), and the rotating hole (8) is rotatably connected to the rotating sleeve (4).

4. The accessory gear train of the engine tensioner according to claim 1, characterized in that: Oil storage bins (9) are symmetrically arranged in the cavity of the belt pulley (6), and six cavities (10) are arranged in an annular array on the belt pulley (6) between the two oil storage bins (9).

5. The accessory gear train of the engine tensioner according to claim 4, characterized in that: A lower oil hole (11) is provided at one end of the cavity (10) close to the rotating hole (8), and oil guide grooves (12) are provided on the rotating holes (8) at both ends of the lower oil hole (11).

6. The accessory gear train of the engine tensioner according to claim 5, characterized in that: An oil outlet pipe (13) is fixedly connected to the pulley (6) at the cavity (10), and both ends of the oil outlet pipe (13) are connected to the oil storage bins (9) at both sides of the cavity (10). An oil outlet hole (14) is opened at the center of the oil outlet pipe (13), and the opening of the oil outlet hole (14) is away from the direction of the lower oil hole (11).

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