CN220869924U - Overrunning clutch, double-turbine hydraulic torque converter and engineering machinery - Google Patents
Overrunning clutch, double-turbine hydraulic torque converter and engineering machinery Download PDFInfo
- Publication number
- CN220869924U CN220869924U CN202322910579.2U CN202322910579U CN220869924U CN 220869924 U CN220869924 U CN 220869924U CN 202322910579 U CN202322910579 U CN 202322910579U CN 220869924 U CN220869924 U CN 220869924U
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- roller
- overrunning clutch
- inner ring
- magnet
- ring cam
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- 238000010276 construction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000004308 accommodation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
The utility model relates to an overrunning clutch, which aims to solve the problem that a magnet mounting hole in the existing overrunning clutch is inconvenient to process; the inner ring cam is provided with roller working surfaces, the number of which corresponds to that of the rollers; a mounting hole is formed in each roller working surface and adjacent to the roller wedging position of the roller working surface, and a magnet for magnetically attracting the roller is arranged in the mounting hole; the magnet is configured to attract the roller to be in a roller wedging position. In the utility model, the magnet for attracting and resetting the roller in the overrunning clutch is arranged on the roller working surface, so that the processing is convenient.
Description
Technical Field
The present utility model relates to an overrunning clutch, and more particularly, to an overrunning clutch, a twin turbine torque converter, and an engineering machine.
Background
In a transmission system of a machine such as a loader or a grader, a twin-turbine torque converter is often used in a construction machine. And an overrunning clutch is arranged at the output end of the double-turbine hydraulic torque converter, so that the outer ring gear idles or the outer ring gear is converged to the intermediate shaft gear through the inner ring cam to output power.
Common overrunning clutches include intermediate shaft gears, outer ring gears, inner ring cams, left baffles, right baffles, rollers, roller reset devices, and the like. The left baffle and the right baffle are positioned at two sides of the roller to limit the roller, the left baffle, the right baffle, the inner ring cam and the middle input shaft gear are connected into a whole through bolts, and the roller is wedged or loosened between the roller working surface of the inner ring cam and the roller working surface of the outer ring gear, so that the overrunning clutch is engaged or separated. A plurality of grooves are uniformly distributed on the radial side surface of an inner ring cam of the existing overrunning clutch, each groove, a left baffle plate, a right baffle plate and an outer ring gear roller working surface are combined into a roller accommodating cavity, each roller accommodating cavity is internally provided with a roller, and the roller working surface is positioned at the bottom of the groove. In the circumferential direction, the roller accommodating cavity is a wedge-shaped cavity, one end of the roller accommodating cavity is a large end, the other end of the roller accommodating cavity is a small end, and the distance between the roller working surface at the large end of the roller accommodating cavity and the roller working surface of the outer ring gear is larger than the distance between the roller working surface at the small end of the roller accommodating cavity and the roller working surface of the outer ring gear (the roller working surface of the outer ring gear is a cylindrical surface). The roller reset device ensures that the roller is positioned at the small end of the roller accommodating cavity at any time, so that the roller wedges the inner ring cam and the outer ring gear when the rotating speed of the outer ring gear is higher than that of the inner ring cam.
In the existing overrunning clutch, the roller reset device has two forms, one is a spring arranged at the large end of the roller accommodating cavity, the roller is pushed to be positioned at the small end of the roller accommodating cavity by the spring, and in the form, the roller rotates and slides relatively to the spring, so that the spring is easy to wear. Another form is to provide a magnet at the small end of the roller receiving chamber to magnetically attract the roller at the small end of the roller receiving chamber, in which form a counterbore is provided in the side wall of the recess at the small end of the roller receiving chamber, the magnet being disposed in the counterbore in the side wall of the recess. Because the counter bore of the fixed magnet is arranged on the side wall of the groove, the counter bore at the position is difficult to process.
Disclosure of utility model
The utility model aims to solve the technical problem that a magnet mounting hole in the existing overrunning clutch is inconvenient to process, and provides the overrunning clutch, the double-turbine hydraulic torque converter and engineering machinery.
The technical scheme for achieving the purpose of the utility model is as follows: an overrunning clutch is constructed, which comprises an outer ring gear, an inner ring cam and a plurality of rollers; the inner ring cam is provided with roller working surfaces, the number of which corresponds to that of the rollers; a mounting hole is formed in each roller working surface and adjacent to the roller wedging position of the roller working surface, and a magnet for magnetically attracting the roller is arranged in the mounting hole; the magnet is configured to attract the roller to be in a roller wedging position.
In the utility model, the mounting holes for mounting the magnets are arranged on the roller working surface, and the roller working surface is close to the tangential direction of the inner ring cam, and the mounting holes are machined on the roller working surface, so that the processing is convenient.
In the overrunning clutch, the roller working surface is a plane. Further, the end of the roller working surface adjacent to the roller wedging position is positioned on the outer circle of the inner ring cam, and the axial direction of the mounting hole is perpendicular to the roller working surface. The radial side surface of the inner ring cam is in a step-shaped structure, and the structure is simple and easy to process.
In the overrunning clutch, the mounting hole is a counter bore, and the magnet is mounted in the mounting hole through interference fit. Further, the mounting hole is a slotted hole, and the length direction of the mounting hole is the axial direction of the inner ring cam. Or the number of the mounting holes arranged on each roller working surface is two or three and is a round hole, and the mounting holes on the same roller working surface are arranged at intervals in the axial direction of the inner ring cam.
In the overrunning clutch of the utility model, the top surface of the magnet is flush with the roller working surface.
The technical scheme for achieving the purpose of the utility model is as follows: a twin turbine torque converter is constructed that includes the overrunning clutch described above.
The technical scheme for achieving the purpose of the utility model is as follows: a construction machine is constructed that includes the twin turbine torque converter described above.
Compared with the prior art, in the overrunning clutch, the magnet which attracts and resets the roller is arranged on the roller working surface, so that the overrunning clutch is convenient to process.
Drawings
FIG. 1 is a schematic illustration of the structure of an overrunning clutch of the present utility model.
FIG. 2 is a schematic illustration of the configuration of the inner ring cam in the overrunning clutch of the present utility model.
FIG. 3 is a schematic view of the configuration of the roller running surface on the inner ring cam of the overrunning clutch of the present utility model.
Part names and serial numbers in the figure:
The intermediate shaft gear 1, the outer ring gear 2, the outer ring roller raceway 21, the inner ring cam 3, the roller working surface 31, the wedging end 311, the mounting hole 32, the roller 4, the bolt 5, the baffle 6 and the magnet 7.
Detailed Description
The following describes specific embodiments with reference to the drawings.
As shown in fig. 1 to 3, the overrunning clutch in the present embodiment includes an outer ring gear 2, an inner ring cam 3, a plurality of rollers 4, and the like, and the inner ring cam 3 is provided with a number of roller work surfaces 31 corresponding to the number of rollers 4.
The inner ring cam 3 is fixed on the intermediate shaft gear 1 through a bolt 5, the outer ring gear 2 is rotatably mounted on the rotating shaft of the intermediate shaft gear 1 through a bearing, the inner ring cam 3 is arranged in the outer ring gear 2, and an outer ring roller race (roller working surface on the outer ring gear) 21 which is a cylindrical surface is provided in the outer ring gear 2. A baffle 6 is fixed on one axial side surface of the inner ring cam 3 through a bolt 5, the baffle 6, the intermediate shaft gear 1, the roller working surface 31 and the outer ring roller race 21 form roller accommodation spaces, and each roller 4 is correspondingly arranged in each roller accommodation space and is positioned between the outer ring roller race 21 and the roller working surface 31.
The roller accommodation space is a wedge-shaped space, and one end in the circumferential direction thereof is small in radial dimension (i.e., the distance between the roller accommodation space at the end roller working surface 31 and the outer ring roller raceway 21 is small) relative to the inner ring cam 3, and the end of the roller working surface 31 corresponding to the end is a wedging end 311; the other end in the circumferential direction of the roller accommodating space is large in radial dimension, and the roller 4 is freely rotatable at this end.
As shown in fig. 2, each roller working surface 31 is provided with a mounting hole 32 adjacent to the roller wedging position thereof, and a magnet 7 magnetically attracting the roller is mounted in the mounting hole 32; the magnet 7 is configured to attract the roller 4 to be located at the roller wedging position.
Optionally, the roller working surface 31 on the inner ring cam 3 is a plane, as shown in fig. 3, an end portion of the roller working surface 31 adjacent to the wedging position of the roller (i.e. the wedging end 311) is located on the outer circle of the inner ring cam 3, and the structure makes the radial side surface of the inner ring cam 3 be stepped, so that the processing is convenient, meanwhile, the space is saved, and the effective space for accommodating the roller in the circumference of the inner ring cam is increased.
In this embodiment, as shown in fig. 1, two circular mounting holes 32 are provided on each roller working surface 31, the two mounting holes 32 are arranged at intervals in the axial direction of the inner ring cam 3, and the axial direction of the mounting holes 32 is perpendicular to the roller working surface 31. Alternatively, the number of the mounting holes 32 may be three; or the mounting hole 32 is an oblong hole, and the length direction of the oblong hole is the axial direction of the inner ring cam. The magnet 7 is mounted in the mounting hole 32 by interference fit, and the top surface of the magnet 7 is flush with the roller working surface.
The embodiment also discloses a double-turbine hydraulic torque converter, which is provided with the overrunning clutch. In the double turbine torque converter, a II-stage turbine output shaft gear is meshed with a countershaft gear, and a I-stage turbine output shaft gear is meshed with an outer ring gear.
The embodiment also discloses engineering machinery, which is provided with the double-turbine hydraulic torque converter. The work machine may be a loader, grader, or the like.
In this embodiment, the magnets are mounted on the roller work surface of the inner ring cam, the roller work surface of the cam faces nearly radially, and the difficulty in machining the mounting holes is low, so that the operation is convenient.
In the present embodiment, when the rotational speed of the outer ring gear 2 is higher than that of the inner ring cam 3, the roller 4 moves toward the small end (left end in fig. 3) of the roller accommodating space under the combined action of the friction torque and the magnetic attraction force of the magnet 7 and wedges the outer ring gear 2 and the inner ring cam 3, thereby integrally forming the outer ring gear 2 and the inner ring cam 3 to rotate synchronously. When the rotation speed of the outer ring gear 2 is lower than that of the inner ring cam 3, the roller 4 moves toward the large end (right end in fig. 3) of the roller accommodating space under the action of friction torque, the outer ring gear is separated from the inner ring cam, and the power input is transmitted only by the intermediate shaft gear.
Claims (10)
1. An overrunning clutch comprises an outer ring gear, an inner ring cam and a plurality of rollers; the inner ring cam is provided with roller working surfaces, the number of which corresponds to that of the rollers; the roller wedge device is characterized in that a mounting hole is formed in each roller working surface and adjacent to the roller wedge position, and a magnet for magnetically attracting the roller is arranged in the mounting hole; the magnet is configured to attract the roller to be in a roller wedging position.
2. The overrunning clutch of claim 1, wherein the roller work surface is planar.
3. The overrunning clutch of claim 2 wherein the end of the roller work surface adjacent the roller wedging position is located on the outer circumference of the inner ring cam.
4. The overrunning clutch of claim 2, wherein the axial direction of the mounting bore is perpendicular to the roller running surface.
5. The overrunning clutch of any one of claims 1-4 wherein the mounting aperture is a counterbore and the magnet is mounted in the mounting aperture by an interference fit.
6. The overrunning clutch of claim 5 wherein the mounting aperture is an oblong aperture having a length oriented axially of the inner ring cam.
7. The overrunning clutch of claim 5, wherein the mounting holes on each roller face are two or three and circular holes, and the mounting holes on the same roller face are spaced apart in the axial direction of the inner ring cam.
8. The overrunning clutch of claim 6 or 7, wherein the top surface of the magnet is flush with the roller running surface.
9. A twin turbine torque converter comprising the overrunning clutch of any one of claims 1 to 8.
10. A construction machine comprising the twin turbine torque converter of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322910579.2U CN220869924U (en) | 2023-10-30 | 2023-10-30 | Overrunning clutch, double-turbine hydraulic torque converter and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322910579.2U CN220869924U (en) | 2023-10-30 | 2023-10-30 | Overrunning clutch, double-turbine hydraulic torque converter and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220869924U true CN220869924U (en) | 2024-04-30 |
Family
ID=90820851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322910579.2U Active CN220869924U (en) | 2023-10-30 | 2023-10-30 | Overrunning clutch, double-turbine hydraulic torque converter and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220869924U (en) |
-
2023
- 2023-10-30 CN CN202322910579.2U patent/CN220869924U/en active Active
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