CN212131117U

CN212131117U - Novel overrunning clutch assembly

Info

Publication number: CN212131117U
Application number: CN202020866188.9U
Authority: CN
Inventors: 邹爱标; 熊清芳
Original assignee: Lonking Jiangxi Machinery Co ltd
Current assignee: Lonking Jiangxi Machinery Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-12-11
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a novel freewheel clutch assembly, including outer ring gear, inner ring cam, middle input shaft input gear device, separation and reunion load balancing unit activity set up in between inner ring cam and the outer ring gear, separation and reunion load balancing unit is including laying in a plurality of stable load-bearing parts of inner ring cam periphery wall to and respectively through corresponding stable load-bearing part set up in between the corresponding interior week wall surface of inner ring cam and outer ring gear, the diameter is 20 mm's roller, stable load-bearing part for distribute set up in on the inner ring cam week wall surface, with the step face that the roller corresponds, separation and reunion load balancing unit still include with the self-adaptation buffering balanced booster unit that the roller corresponds. The novel overrunning clutch assembly has stable and reliable operation, large and uniform bearing load and long service life.

Description

Novel overrunning clutch assembly

Technical Field

The utility model relates to a loader especially relates to a novel freewheel clutch assembly for loader.

Background

The overrunning clutch assembly is an important component of a loader gearbox, and the shaft head jumping precision of a key part input shaft of the overrunning clutch assembly is required to be guaranteed within 0.05 mm. The existing overrunning clutch assembly structure is formed in a split mode that an input shaft and an input gear are fixedly connected through corresponding splines and the like. The 6-ton overrunning clutch assembly formed by the existing structure has the obvious defects that: first, a prior art intermediate input shaft and input gear transmission configuration is shown in fig. 5 and 6, which, on the one hand, because the input shaft and the input gear have accumulated errors in the processing process and the performance difference of individuals and materials of the mutually fixed connecting parts, and the connection structure of the spline type connection device of the gear and the shaft has problems of rationality, reliability and stability, the stability of connection and fixation is uncertain to a certain extent, the shaft head jumping of the input shaft after the overrunning clutch assembly is assembled is difficult to ensure, the shaft head jumping d after the assembly is difficult to meet the requirement, when the shaft head has large bounce after the overrunning clutch assembly is assembled, the matched part of the shaft head and the journal of the box body can rotate, abnormal abrasion occurs, so that the lubricating oil pressure of the gearbox is reduced, the operation stability is reduced, and the overrun clutch assembly can be caused to lose efficacy; on the other hand, the involute inner spline f2 and the involute outer spline f1 are required to be arranged on the input gear 41 and the intermediate input shaft 42 respectively, the processing and manufacturing process of the input shaft and the input gear is more complex, the equipment process is complex, the corresponding processing, manufacturing and equipment use cost is relatively increased, and the operation failure rate and the maintenance workload are increased. Secondly, because the connection structure of the input gear and the inner ring cam of the existing overrunning clutch assembly is not reasonable, up to 20 bolts are needed to be used for fixedly connecting the input gear and the inner ring cam, so that the equipment process is increased, more raw material parts are consumed, and particularly, although the number of the bolts is up to 20, the assembly gap error is large, the reliability is low, the operation stability is poor, and the relative reliability is low. Thirdly, because the overrunning clutch is a transmission device which transmits mechanical power through the roller raceway in a one-way mode, the mechanical transmission is meshed or separated by utilizing the speed difference between the driving raceway and the driven raceway. The overrunning clutch of the loader such as 5T, 6T and the like structurally realizes the wedging and the separation of the rollers by utilizing the speed difference of the inner ring and the outer ring. Because the corresponding roller path structure is unreasonable, when the existing overrunning clutch is under a heavy load working condition, the load borne by related parts is smaller, and the radial load borne by the deep groove ball bearing at the right end is smaller, so that the slipping failure of the clutch is easily caused, and the clutch is difficult to adapt to the long-term stable operation under the heavy load working condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel freewheel clutch assembly to the not enough of prior art existence, this novel freewheel clutch assembly operation is reliable and stable, and the bearing load is big and even, long service life, processing and equipment simple process.

This technical scheme of novel freewheel clutch assembly includes outer ring gear, inner ring cam, middle input shaft input gear device, still includes a separation and reunion load balancing unit, separation and reunion load balancing unit activity set up in between inner ring cam and the outer ring gear, separation and reunion load balancing unit is including laying in a plurality of stable load-bearing parts of inner ring cam periphery wall to and respectively through corresponding stable load-bearing part set up in between the corresponding interior cliff side of inner ring cam and outer ring gear, the diameter is 20 mm's roller, stable load-bearing part for distribute set up in on the inner ring cam week wall, with the step face that the roller corresponds, separation and reunion load balancing unit still include with the self-adaptation buffering balanced booster unit that the roller corresponds.

One end of the middle input shaft is provided with a TM6211 reinforced deep groove ball bearing, the other end of the middle input shaft is provided with a short cylinder NU210M bearing, and TM6210 reinforced deep groove ball bearings are arranged between the inner side of the short cylinder NU210M bearing, the outer ring gear and the middle input shaft.

This novel freewheel clutch assembly intermediate input shaft gear processing is convenient, the spindle nose through the requirement of directly guaranteeing of external grinding is beated, freewheel clutch assembly back, the spindle nose is beated and can all be controlled within 0.03mm, avoid appearing the unusual wearing and tearing at spindle nose and box axle journal matching position, product quality is reliable and stable, ensure the normal safe and stable reliable operation of whole freewheel clutch assembly, because the rationality of corresponding its raceway structure, relevant parts bear the load evenly, corresponding wedging power is balanced, it is stable, can avoid losing efficacy under the heavy load operating mode, freewheel clutch assembly bearing capacity is big, and can effectively prolong the operation life of freewheel clutch assembly.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; FIG. 3 is a partial cross-sectional view of FIG. 2 along the axis of the blind hole for accommodating the guide (the roller and the energy-storing balancing wedging spring); fig. 4 is a schematic structural view of another embodiment of the present invention; fig. 5 and 6 are schematic views of the prior art input gear and intermediate input shaft configuration, respectively.

Detailed Description

In order to further understand the present invention, the present invention will now be further described by embodiments with reference to the attached drawings.

As shown in fig. 1 and 3. The novel overrunning clutch assembly comprises an outer ring gear 8, an inner ring cam 7 arranged in the outer ring gear, a middle input shaft and an input gear device thereof, the middle input shaft and an input gear transmission device thereof are integrated, and a corresponding clutch load balancing device and the like. An integral intermediate input shaft input gear device thereof is constituted by an integral intermediate input shaft gear 4.

The middle input shaft of the integrated middle input shaft gear 4 and the input gear of the integrated middle input shaft gear are processed and manufactured by a whole block of corresponding manufacturing materials to form an integrated structure, two ends of the input shaft part of the integrated middle input shaft gear 4 are respectively sleeved with a supporting bearing, the supporting bearing close to one side of the gear part of the integrated middle input shaft gear is a TM6211 reinforced deep groove ball bearing 5, and the supporting bearing close to one side of the outer ring gear 8 is a TM6210 reinforced deep groove ball bearing 13.

The outer ring gear 8 is arranged on the integrated middle input shaft gear through a short cylindrical NU210M bearing 12. And an isolating ring 14 is arranged between the TM6210 enhanced deep groove ball bearing 13 and the NU210M bearing 12.

A 6010 bearing 9 is sleeved between the outer ring gear 8 and the integrated intermediate input shaft gear 4, and a check ring 21 is arranged between the left side of the 6010 bearing 9 and the outer ring gear 8 and can stabilize the operation of the outer ring gear. The running performance of the outer ring gear and even the whole clutch assembly is improved. An isolating sleeve 11 sleeved on the integrated middle input shaft gear 4 is arranged in a ring track hole of the outer ring gear 8 to form rigid connection. The left and right opposite ends of the inner ring cam are respectively provided with a left retainer ring 6 and a right retainer ring 15.

The inner ring cam 7 is fixedly connected with the integrated middle wheel shaft gear 4 through corresponding positioning type connecting devices, and the positioning type connecting devices comprise four positioning pins 2 which are symmetrically and uniformly distributed and connected between the gear part of the integrated middle input shaft gear 4 and the

inner ring cam

7, and 4 or 8 movement transmission bolts 3 which are respectively distributed between the positioning pins 2.

The clutch load balancing device comprises 20

step surfaces

19 and 20 rollers 16 which are arranged on the convex surface (namely the maximum peripheral wall surface) of the inner ring cam, and a corresponding self-adaptive buffering balance power assisting device and the like.

The self-adaptive buffering balance power assisting device comprises accommodating guide blind holes 17 which correspond to two opposite ends of the roller and are distributed on the peripheral walls of two opposite ends of the corresponding convex surface of the inner ring cam, and energy storage balance wedge springs 18 which are respectively arranged between the accommodating guide blind holes and the side wall surfaces of corresponding parts of two opposite ends of the roller 16.

The rollers 16 are disposed between the step surfaces and the corresponding inner peripheral wall surfaces of the outer ring gears corresponding to the energy storage balance wedging springs 18 at the respective ends thereof. The energy storage balance wedge spring is obliquely arranged on the radial section (cross section) of the roller, and the oblique angle is as follows: and an included angle 20 between a radial over-center connecting line of the roller and the inner ring cam and an axial direction line of the containing guide blind hole. The hole opening for accommodating the guide blind hole is formed in the arc-shaped side wall surface part of the step surface.

The working principle is as follows: the overrunning and the separation are realized by utilizing the speed difference of the inner ring cam and the outer ring gear, and when the gearbox is in a high-speed and light-load working condition, because the rotating speed of the integrated intermediate input shaft gear is higher than that of the outer ring gear, the roller idles, at the moment, the integrated intermediate input shaft gear works independently; when the gearbox is in a low-speed heavy-load working condition, the rotating speed of the integrated intermediate input shaft gear is forced to gradually decrease, when the rotating speed of the integrated intermediate input shaft gear is lower than the rotating speed of the outer ring gear, the roller is wedged tightly under the buffering assistance action of the self-adaptive force buffering wedge-caulking device, the torque of the outer ring gear is transmitted to the integrated intermediate input shaft gear through the roller, the inner ring cam and the movement transmission bolt 3, and at the moment, the outer ring gear and the integrated intermediate input shaft gear work simultaneously, so that larger torque can be transmitted.

In another embodiment, as shown in FIG. 4. A corresponding retainer ring 10 is arranged between an isolating sleeve 11 and a 6010 bearing 9 in an inner ring cam so as to further improve the matching performance and stability of an outer ring gear and an input middle shaft gear. An integral middle input shaft gear, an inner ring cam and a right retainer ring 15 are fixedly connected with each other through 20 bolts 3. The support bearing on the side of the gear portion of the integrated intermediate input shaft gear is a 6214 bearing, and the support bearing on the side of the outer ring gear 8 is a 6311 bearing. The bearing capacity is relatively larger and more reliable, and the positioning type connecting device is arranged, so that the assembly gap is fundamentally eliminated, the working stability and reliability of the assembly are effectively improved, and the product quality is improved. The rest of the structure and the corresponding operation method of this example can be similar to the above-mentioned embodiment.

In yet another embodiment, a retainer ring 21 is provided between the left side of the 6010 bearing 9 and the outer ring gear 8, and a corresponding retainer ring 10 is provided between the spacer 11 and the 6010 bearing 9 in the inner ring cam. The rest of the structure, the corresponding operation method and the like of the present embodiment can be similar to any of the above embodiments.

Claims

1. The utility model provides a novel overrunning clutch assembly, includes outer ring gear, inner ring cam, middle input shaft input gear device, and characterized by still includes a separation and reunion load balancing unit, separation and reunion load balancing unit activity set up in between inner ring cam and the outer ring gear, separation and reunion load balancing unit is including laying in a plurality of stable load-bearing parts of inner ring cam periphery wall to and respectively through corresponding stable load-bearing part set up in between the corresponding interior cliff side of inner ring cam and outer ring gear, the diameter is 20 mm's roller, stable load-bearing part for distribute set up in on the inner ring cam week wall, with the step face that the roller corresponds, separation and reunion load balancing unit still include with the self-adaptation buffering balanced booster unit that the roller corresponds.

2. The novel overrunning clutch assembly according to claim 1, wherein one end of the intermediate input shaft is provided with a TM6211 reinforced deep groove ball bearing, the other end of the intermediate input shaft is provided with a short cylindrical NU210M bearing, and the TM6210 reinforced deep groove ball bearing is arranged between the inner side of the short cylindrical NU210M bearing, the outer ring gear and the intermediate input shaft.