CN211693254U - Protection device for rocker bearing - Google Patents
Protection device for rocker bearing Download PDFInfo
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- CN211693254U CN211693254U CN201921981819.5U CN201921981819U CN211693254U CN 211693254 U CN211693254 U CN 211693254U CN 201921981819 U CN201921981819 U CN 201921981819U CN 211693254 U CN211693254 U CN 211693254U
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- rocker arm
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Abstract
The invention relates to a protection device of a rocker bearing, which comprises a mounting bracket 1, a bushing 2, a bolt 3, a washer 4, a disc washer 5, an adjusting washer 6, a rocker arm 7, a bearing 8, a screw 9, a shaft sleeve 10, a nut 11 and a cotter pin 12, wherein the mounting bracket is fixedly connected with the bushing 2; the rocker arm 7 is arranged between the mounting brackets 1 through bolts 3, bearings are arranged at two ends of a step through hole formed in the rotating center of the rocker arm, disc-shaped gaskets 5 are respectively arranged at two ends of the bearings, and the inflow of foreign matters is prevented by the disc-shaped gaskets 5; the lubricating grease filling port is reserved in the middle of the rocker arm and is sealed by a screw, the device overcomes the defects of an open bearing and a sealed bearing in actual use, firstly, the bearing can be directly maintained without disassembling and assembling products, and secondly, the bearing does not need to be replaced in a service life cycle through regular maintenance.
Description
Technical Field
The invention belongs to the field of flight control transmission, and particularly relates to a protection device for a rocker bearing, which is used for increasing the storage amount of bearing lubricating grease, protecting foreign matters from entering a bearing to damage the bearing, and then protecting the lubricating grease from loss and facilitating the maintenance of the bearing.
Background
At present, a mechanical transmission device is adopted by an airplane flight control transmission device, a rocker arm assembly is an important part of the mechanical transmission device, the rocker arm assembly is arranged at the horizontal tail section of an airplane, the assembly arranged at the position is influenced by environments such as rain, sand and dust, high and low temperature impact, vibration, acceleration, impact and the like, and has great influence on a bearing, the bearing for the rocker arm assembly at the present stage has two forms, namely an open bearing and a sealed bearing, both have use limitations, foreign matters are easy to appear in the use process of the open bearing, part of the foreign matters are metal particles peeled off by the abrasion of the bearing, and the other part of the foreign matters are small particles entering from the outside, so that the bearing is easy to be damaged, the bearing needs to be dismounted after being damaged, replaced, the cost is very high, and the maintenance frequency is; although the sealed bearing avoids foreign objects, the foreign objects in the sealed bearing cannot be removed, the sealed bearing has less grease storage amount and cannot meet the requirement of the service life of the product, the grease is easy to dry up when being contacted with air, the replacement of the grease requires the removal of the product for maintenance on the ground, and the service life of the bearing in the rocker arm and the maintenance work cost are huge. The rocker arm assembly bearing adopts non-sealed bearing, and its lubricating grease storage volume is few, easily runs off, easily advances the foreign matter, and adopts sealed bearing lubricating grease consumption to totally can not maintain, wherein has described "oiling method and oiling instrument of sealed bearing" in application number 201310062382.6 and has seen the figure below, because its structure is complicated, uses special installation requirement occasionally, need have screw thread and axial space, and the oil filler point position also need be in axis direction.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects of the prior art, the invention provides a protection device for a rocker bearing, which is used for prolonging the service life of the rocker bearing by mounting disc washers at two ends of the bearing during assembly.
The technical scheme of the invention is as follows: a protection device for a rocker bearing comprises a mounting bracket, a rocker, a bearing and a shaft sleeve; the mounting bracket comprises two vertical and symmetrical supporting arms for supporting the whole device, and through holes are formed in the opposite positions of the top ends of the two supporting arms; a step through hole is formed in the rotating center of the rocker arm, the two ends of the step through hole are large-diameter ends for coaxially mounting the bearings, and the shaft sleeve is coaxially mounted between the two bearings and at the small diameter position in the middle of the step through hole; the rocker arm is arranged between the two support arms through bolts, the bolts sequentially penetrate through the through hole in the support arm at one side, the step through hole in the support arm at the other side, which is provided with the bearing and the shaft sleeve, and the through hole in the support arm at the other side, and the bolts are screwed on the outer side of the support arm at the other side through nuts; the method is characterized in that: the protection device also comprises a bushing, a disc-shaped washer and an adjusting washer; the two ends of the bolt rod part are fixedly arranged in the through holes of the two supporting arms through the bushings, disc-shaped gaskets are coaxially arranged between the bushings and the bearings at the two ends of the rocker arm, and the adjusting gaskets are coaxially fixed between the disc-shaped gaskets and the bearings;
the disc-shaped gasket is in a flared flaring shape from the small-diameter end of the inner hole to the large-diameter end of the outer peripheral surface, the inner diameter of the disc-shaped gasket is in interference fit with the bolt rod, and the outer diameter of the disc-shaped gasket is the same as the diameter of the outer peripheral surface of one end of the rocker arm, which is provided with the step through hole; the large-diameter end surfaces of the two disc-shaped gaskets are both arranged towards the rocker arm and are in clearance fit with the two end surfaces of the rocker arm mounting bearing;
and the outer peripheral surface of one end of the rotating center of the rocker arm is provided with a radial through hole, and the radial through hole is communicated with the step through hole and is used for filling lubricating grease.
The further technical scheme of the invention is as follows: the clearance between the large-diameter end face of the disc-shaped gasket and the end face of the rocker arm mounting bearing is 0.1mm +/-0.05 mm.
The further technical scheme of the invention is as follows: and washers are arranged between the bottom surface of the bolt head and the bushing and between the nut and the bushing.
The further technical scheme of the invention is as follows: the radial through holes in the rocker arm are threaded holes and are plugged through screws.
The further technical scheme of the invention is as follows: the radial through hole on the rocker arm is positioned at the axial center of the step through hole of the rocker arm.
The further technical scheme of the invention is as follows: and the nut through hole cotter pin is locked.
Advantageous effects
The invention has the beneficial effects that: the invention discloses a protective device for prolonging the service life of a rocker arm bearing, wherein lubricating grease is coated on the inner cavity of a rocker arm according to requirements before a rocker arm assembly is assembled, disc-shaped gaskets are arranged at two ends of the bearing during assembly, the gaps between the disc-shaped gaskets and two end surfaces of the rocker arm are adjusted to be within 0.1mm +/-0.05 mm through adjusting the gaskets, the damage of friction to the bearing can be prevented, the gaps ensure that the bearing does not interfere with the disc-shaped gaskets in the working process of the rocker arm assembly, the inflow of foreign matters is prevented, a lubricating grease filling port is reserved in the middle of the rocker arm, and the filling port is blocked by a screw.
Finally, the method solves the use limitation of the oil injection method and the oil injection tool for the closed bearing, adapts to the maintenance of the bearing without axial maintenance requirements, reduces the maintenance procedures, prolongs the service life of the bearing, reduces the cost, improves the operation feeling of a driver and improves the operation precision.
Drawings
FIG. 1 is a schematic view of a prior art maintenance apparatus for extending the life of a rocker arm bearing.
FIG. 2 is a schematic view of the device for maintaining the rocker bearing in an extended life of the present invention.
Fig. 3 is a schematic view of the mounting bracket of the present invention.
Fig. 4 is a schematic view of a rocker arm of the present invention.
FIG. 5 is a schematic view of a disc washer of the present invention.
Description of reference numerals: 1. mounting a bracket; 2. a bushing; 3. a bolt; 4. a gasket; 5. a disc-shaped washer; 6. an adjusting washer; 7. a rocker arm; 8. a bearing; 9. a screw; 10. a shaft sleeve; 11. a nut; 10. and a cotter pin.
Detailed Description
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 2, the protection device for the rocker bearing of the invention comprises a mounting bracket 1, a bushing 2, a bolt 3, a washer 4, a disc washer 5, an adjusting washer 6, a rocker arm 7, a bearing 8, a screw 9, a shaft sleeve 10, a nut 11 and a cotter pin 12;
referring to fig. 3, the mounting bracket 1 is a thin-wall part, the bottom surface of the mounting bracket is a mounting surface butted with an airplane, the mounting surface is provided with a plurality of through holes butted with the airplane, two vertical plates which are parallel to each other are perpendicular to the mounting surface and are used as supporting arms, and the vertical plates are provided with reinforced bosses along the periphery; through holes are arranged at the opposite positions of the top ends of the two supporting arms of the mounting bracket 1;
referring to fig. 4, a step through hole is formed in the rotation center of the rocker arm 7, the two ends of the step through hole are large-diameter ends for coaxially mounting the bearings 8, and the shaft sleeve 10 is coaxially mounted between the two bearings 8 and at the middle small diameter position of the step through hole; installing a rocker arm 7 between the two support arms through a bolt 3, wherein a radial through hole is formed in the outer peripheral surface of one end of the rotation center of the rocker arm, and the radial through hole is communicated with the step through hole and is used for filling lubricating grease; the radial through hole on the rocker arm 7 is a threaded hole and is blocked by a screw 9. The swing arm end of the rocker arm is provided with a notch for connecting with other parts.
Referring to fig. 2, according to the maintenance device for prolonging the service life of the rocker arm bearing, the bushing 2 is pressed into the through hole of the supporting arm of the mounting bracket 1, the gaskets 4 are mounted between the bushing 2 and the bottom surface of the bolt head and between the bushing 2 and the nut 11, the two side bushings 2 are respectively provided with the disc-shaped gasket 5 towards one end of the rocker arm 7, the other end of the disc-shaped gasket 5 is provided with the adjusting gasket 6, the rocker arm 7 is mounted at the other end of the adjusting gasket, and the shaft sleeve 10 is mounted in the middle of the step through hole. One end of the shaft sleeve 10 is provided with a bearing 8, and the end part of the bearing and the plane hole of the rocker arm 7 are circumferentially compressed; the other end of the shaft sleeve 10 is provided with another bearing 8, the other end of the bearing is provided with an adjusting washer, and the other side of the adjusting washer is provided with a washer; the bolt 3 is sequentially transmitted into a washer 4, a bush 2, a disc washer 5, an adjusting washer 6, a bearing 8, a shaft sleeve 10, a bearing 8, an adjusting washer 6, a disc washer 5 and a bush 2, the lower end of the bolt 3 is matched with the nut 11, and finally the bolt is locked by the cotter pin 12.
Referring to fig. 5, the belleville washer 5 has a flared shape from the small diameter end of the inner bore to the large diameter end of the outer circumferential surface, the inner diameter of the belleville washer is in interference fit with the bolt shank, and the outer diameter of the belleville washer is the same as the diameter of the outer circumferential surface of the rocker arm 7 at the end provided with the step through hole; the large-diameter end faces of the two disc washers 5 are both installed towards the rocker arm 7 and are in clearance fit with the two end faces of the rocker arm 7 where the bearing is installed.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (6)
1. A protection device for a rocker bearing comprises a mounting bracket, a rocker, a bearing and a shaft sleeve; the mounting bracket comprises two vertical and symmetrical supporting arms for supporting the whole device, and through holes are formed in the opposite positions of the top ends of the two supporting arms; a step through hole is formed in the rotating center of the rocker arm, the two ends of the step through hole are large-diameter ends for coaxially mounting the bearings, and the shaft sleeve is coaxially mounted between the two bearings and at the small diameter position in the middle of the step through hole; the rocker arm is arranged between the two support arms through bolts, the bolts sequentially penetrate through a through hole in the support arm on one side, a step through hole in the rocker arm, which is provided with a bearing and a shaft sleeve, and a through hole in the support arm on the other side, and the bolts are screwed on the outer side of the support arm on the other side through nuts; the method is characterized in that: the protection device also comprises a bushing, a disc-shaped washer and an adjusting washer; the two ends of the bolt rod part are fixedly arranged in the through holes of the two supporting arms through the bushings, disc-shaped gaskets are coaxially arranged between the bushings and the bearings at the two ends of the rocker arm, and the adjusting gaskets are coaxially fixed between the disc-shaped gaskets and the bearings;
the disc-shaped gasket is in a flared flaring shape from the small-diameter end of the inner hole to the large-diameter end of the outer peripheral surface, the inner diameter of the disc-shaped gasket is in interference fit with the bolt rod, and the outer diameter of the disc-shaped gasket is the same as the diameter of the outer peripheral surface of one end of the rocker arm, which is provided with the step through hole; the large-diameter end surfaces of the two disc-shaped gaskets are both arranged towards the rocker arm and are in clearance fit with the two end surfaces of the rocker arm mounting bearing;
and the outer peripheral surface of one end of the rotating center of the rocker arm is provided with a radial through hole, and the radial through hole is communicated with the step through hole and is used for filling lubricating grease.
2. The apparatus for protecting a rocker bearing of claim 1, wherein: the clearance between the large-diameter end face of the disc-shaped gasket and the end face of the rocker arm mounting bearing is 0.1mm +/-0.05 mm.
3. The apparatus for protecting a rocker bearing of claim 1, wherein: and washers are arranged between the bottom surface of the bolt head and the bushing and between the nut and the bushing.
4. The apparatus for protecting a rocker bearing of claim 1, wherein: the radial through holes in the rocker arm are threaded holes and are plugged through screws.
5. The apparatus for protecting a rocker bearing of claim 1, wherein: the radial through hole on the rocker arm is positioned at the axial center of the step through hole of the rocker arm.
6. The apparatus for protecting a rocker bearing of claim 1, wherein: and the nut through hole cotter pin is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921981819.5U CN211693254U (en) | 2019-11-15 | 2019-11-15 | Protection device for rocker bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921981819.5U CN211693254U (en) | 2019-11-15 | 2019-11-15 | Protection device for rocker bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211693254U true CN211693254U (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921981819.5U Active CN211693254U (en) | 2019-11-15 | 2019-11-15 | Protection device for rocker bearing |
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| Country | Link |
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| CN (1) | CN211693254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118124312A (en) * | 2024-02-04 | 2024-06-04 | 浙江春风动力股份有限公司 | All-terrain vehicle |
-
2019
- 2019-11-15 CN CN201921981819.5U patent/CN211693254U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118124312A (en) * | 2024-02-04 | 2024-06-04 | 浙江春风动力股份有限公司 | All-terrain vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Protective device for rocker arm bearing Effective date of registration: 20211229 Granted publication date: 20201016 Pledgee: AVIC Finance Co.,Ltd. Xi'an Branch Pledgor: XI'AN QING'AN ELECTRIC CONTROL Co.,Ltd. Registration number: Y2021980017053 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230106 Granted publication date: 20201016 Pledgee: AVIC Finance Co.,Ltd. Xi'an Branch Pledgor: XI'AN QING'AN ELECTRIC CONTROL Co.,Ltd. Registration number: Y2021980017053 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |