CN216589654U

CN216589654U - Novel hollow shaft fork

Info

Publication number: CN216589654U
Application number: CN202122516642.5U
Authority: CN
Inventors: 陈红凯; 李宏杰; 胡小耿; 王玉玲
Original assignee: Henan Tongxin Transmission Co ltd
Current assignee: Henan Tongxin Transmission Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-05-24
Anticipated expiration: 2031-10-19

Abstract

The utility model provides a novel hollow shaft fork, which comprises an inner spline shaft, an outer spline shaft and a shaft fork, wherein the inner spline shaft is sleeved outside the outer spline shaft and is matched with the outer spline shaft, the inner spline shaft and the outer spline shaft are both in hollow through structures, and the inner spline shaft is detachably connected with the shaft fork through a fixing part; the hollow internal spline shaft and the external spline shaft are matched with each other, the comprehensive performance of the hollow internal spline shaft is better than that of a solid spline shaft, and the internal spline shaft and the shaft fork are detachably connected through the fixing part, so that the shaft fork is prevented from being damaged and is convenient to detach and maintain.

Description

Novel hollow shaft fork

Technical Field

The utility model mainly relates to the technical field of shaft forks, in particular to a novel hollow shaft fork.

Background

The sliding spline pair is generally formed by matching a spline shaft fork (an external spline) and a spline sleeve (an internal spline), the spline shaft fork is of a solid structure, the material is generally solid round steel, and the processing technology generally comprises blanking, forging, shot blasting, tempering, rough and finish turning, spline milling, quenching and the like. The utilization rate of the material of the spline shaft fork designed and processed is 59%, the processes of forging, quenching and tempering, heat treatment, multi-turning and milling of the external spline are adopted, the energy consumption and the cutting are more, the processing cost and the material cost are higher, the difference between the fork head and the shaft of the shaft fork is larger, and the processing resource is consumed. The connecting hole arranged on the fork head is used for installing the cross shaft bearing, and the bearing is in interference fit with the connecting hole, and the bearing cover is limited by the inner clamping type clamping piece, so that the bearing is inconvenient to install, disassemble and maintain.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a novel hollow shaft yoke which is used for solving the technical problems in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a novel hollow shaft fork, wherein, includes internal spline axle, external spline axle and shaft fork, the internal spline axle cover is in the external spline axle outside, and mutually supports, internal spline axle and external spline axle are hollow through structure, be connected through fixed part detachably between internal spline axle and the shaft fork.

Furthermore, the fixed part includes fixing base and connecting seat, the fixing base rigid coupling is at the one end opening part of internal spline axle, the connecting seat rigid coupling is in the rear end of shaft fork, the edge portion of connecting seat is opened there are a plurality of locating holes, be equipped with the location double-screw bolt that corresponds with the locating hole on the edge portion of fixing base, the connecting seat corresponds with the fixing base, and is connected with the nut on the location double-screw bolt, and is fixed shaft fork and internal spline axle.

Further, the oil filler point that has the well kenozooecium correspondence with the internal spline axle is opened at the middle part of fixing base, and still sealed gland on the oil filler point, the one end that the internal spline axle kept away from the shaft yoke and the outside of external spline axle are each for the inclined plane, and sealed between two inclined planes has sealed cushion, the other end opening rigid coupling of external spline axle has the transmission seat, the middle part of transmission seat also is equipped with the oil filler point, it has gland to seal on the oil filler point.

Furthermore, the junction of fixing base and internal spline shaft is equipped with the rib, the junction of transmission seat and external spline shaft is equipped with the rib.

Furthermore, the outside of external spline shaft still is equipped with the shielding part that corresponds with sealed cushion for avoid the clearance on the sealed cushion to pile up the dust.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the hollow internal spline shaft and the external spline shaft are mutually matched, through static stress analysis, the stress of the hollow spline shaft is only increased by 5% while the weight of the hollow spline shaft is reduced by 37.7%, the strength of the hollow spline shaft is basically consistent with that of the solid spline shaft, and the hollow spline shaft is better in comprehensive performance.

2. The internal spline shaft and the shaft fork are detachably connected through the fixing part, so that the shaft fork is convenient to detach and maintain when damaged; and the oil filler point, the internal spline shaft, the external spline shaft and the sealing gasket block form a closed oil storage cavity, the sealing gland is used for opening or sealing the oil filler point, and the connecting seat is used for extruding the sealing gland on the fixing seat, so that the oil leakage at the hollow parts of the hollow internal spline shaft and the hollow external spline shaft is avoided.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the fixing member of the present invention.

In the figure: 1. a female spline shaft; 2. an external spline shaft; 3. a shaft yoke; 4. a fixing member; 5. an oil filler hole; 6. a sealing gland; 7. sealing the rubber gasket; 8. a transmission seat; 9. a reinforcing portion; 10. a shielding portion; 41. a fixed seat; 42. a connecting seat; 411. positioning the stud; 421. and (7) positioning the holes.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings in the embodiment of the present invention.

The utility model provides a novel hollow shaft fork 3, which is shown in a figure 1-2 and comprises an inner spline shaft 1, an outer spline shaft 2 and a shaft fork 3, wherein the inner spline shaft 1 is sleeved outside the outer spline shaft 2 and is matched with the outer spline shaft 2, the inner spline shaft 1 and the outer spline shaft 2 are both in a hollow through structure, and the inner spline shaft 1 is detachably connected with the shaft fork 3 through a fixing part 4.

The fixing part 4 comprises a fixing seat 41 and a connecting seat 42, the fixing seat 41 is fixedly connected at an opening at one end of the internal spline shaft 1, the connecting seat 42 is fixedly connected at the rear end of the shaft fork 3, a plurality of positioning holes 421 are formed in the edge part of the connecting seat 42, positioning studs 411 corresponding to the positioning holes 421 are arranged on the edge part of the fixing seat 41, the connecting seat 42 corresponds to the fixing seat 41, nuts are connected to the positioning studs 411, and the shaft fork 3 and the internal spline shaft 1 are fixed; when avoiding shaft yoke 3 to damage, convenient dismantlement maintenance.

An oil filling hole 5 corresponding to the hollow part of the inner spline shaft 1 is formed in the middle of the fixed seat 41, a sealing gland 6 is sealed on the oil filling hole 5, one end, away from the shaft fork 3, of the inner spline shaft 1 and the outer side of the outer spline shaft 2 are inclined planes, a sealing rubber gasket 7 is sealed between the two inclined planes, a transmission seat 8 is fixedly connected to an opening of the other end of the outer spline shaft 2, the oil filling hole 5 is also formed in the middle of the transmission seat 8, and the sealing gland 6 is sealed on the oil filling hole 5; the oil filler point 5, internal spline shaft 1, external spline shaft 2 and sealed pad piece form inclosed oil storage chamber, and gland 6 is used for opening or sealed oil filler point 5, and connecting seat 42 is used for extrudeing gland 6 on the fixing base 41 to avoid the hollow department oil leak of hollow internal spline shaft 1 and external spline shaft 2.

A reinforcing part 9 is arranged at the joint of the fixed seat 41 and the internal spline shaft 1, and a reinforcing part 9 is arranged at the joint of the transmission seat 8 and the external spline shaft 2 and used for reinforcing the stress concentration parts of the internal spline shaft 1 and the external spline shaft 2; the outside of external spline shaft 2 still is equipped with the shielding part 10 that corresponds with sealed cushion 7 for avoid the clearance on the sealed cushion 7 to pile up the dust.

In the utility model, the blanking weight of the solid spline shaft is 22kg, the finished product weight is 13kg, the total blanking weight of the hollow spline shaft is about 13.7kg, and the finished product weight is about 10.07kg, compared with the expected blanking weight which can be reduced by 37.7%, the finished product weight which can be reduced by about 22.5%, and the whole spline shaft pair which can be reduced by about 5.49kg and about 28.1%. Through establishing a digital analogy and adopting CAE software to carry out static stress analysis, when the solid spline shaft is loaded at 15000N.m, the maximum stress of the spline part is about 448MPa, and when the hollow spline shaft is loaded at 15000N.m, the maximum stress of the spline part is about 470MPa, compared with the stress of the hollow spline shaft fork 3 which is reduced by 37.7 percent and is simultaneously increased by about 5 percent. This indicates that the hollow spline shaft yoke 3 has substantially the same strength as the solid spline shaft yoke 3 while the weight is greatly reduced, that is, the hollow spline shaft yoke 3 is better in overall performance.

The shaft yoke 3 and the spline shaft of the hollow shaft yoke 3 are separately processed, the end surface and the inverted inner and outer angles of the shaft yoke 3 are processed firstly, and then the spline hollow hole of the spline shaft and the end surface of the shaft yoke 3 are processed by using the composite type cutter, so that the perpendicularity of the spline hollow hole of the spline shaft and the end surface of the shaft yoke 3 is ensured, and the perpendicularity can be ensured within 0.03mm because the processing is finished in the same clamping process. The improved hollow shaft fork has the advantages that a better positioning reference is provided for the spline, the installation precision of the shaft fork 3 and the spline shaft is higher, and the quality of the hollow shaft fork 3 can be better ensured.

The spline housing blank of the internal spline shaft 1, the spline housing blank of the external spline shaft 2 and the splines thereof adopt a cold extrusion forming process, belong to a chipless processing method, greatly reduce the blanking weight, improve the material utilization rate to about 85 percent, eliminate the blank forging and quenching and tempering heat treatment and have higher processing efficiency.

Finally, it should be noted that: the above examples are only intended to illustrate the utility model and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; therefore, it is intended to cover all modifications and variations of this invention provided they come within the scope of the appended claims.

Claims

1. The utility model provides a novel hollow shaft fork, its characterized in that, includes internal spline shaft (1), external spline shaft (2) and shaft fork (3), internal spline shaft (1) cover is in external spline shaft (2) outside, and mutually supports, internal spline shaft (1) and external spline shaft (2) are hollow through structure, be connected through fixed part (4) detachably between internal spline shaft (1) and shaft fork (3).

2. The novel hollow shaft fork as claimed in claim 1, wherein the fixing part (4) comprises a fixing seat (41) and a connecting seat (42), the fixing seat (41) is fixedly connected to an opening at one end of the inner spline shaft (1), the connecting seat (42) is fixedly connected to the rear end of the shaft fork (3), a plurality of positioning holes (421) are formed in the edge of the connecting seat (42), positioning studs (411) corresponding to the positioning holes (421) are arranged on the edge of the fixing seat (41), the connecting seat (42) corresponds to the fixing seat (41), nuts are connected to the positioning studs (411), and the shaft fork (3) is fixed to the inner spline shaft (1).

3. The novel hollow shaft fork as claimed in claim 2, wherein an oil filling hole (5) corresponding to the hollow portion of the internal spline shaft (1) is formed in the middle of the fixing base (41), a sealing gland (6) is sealed on the oil filling hole (5), one end, away from the shaft fork (3), of the internal spline shaft (1) and the outer side of the external spline shaft (2) are inclined planes, a sealing rubber gasket (7) is sealed between the two inclined planes, a transmission base (8) is fixedly connected to an opening at the other end of the external spline shaft (2), the oil filling hole (5) is also formed in the middle of the transmission base (8), and the sealing gland (6) is sealed on the oil filling hole (5).

4. A novel hollow shaft fork as claimed in claim 3, characterized in that the joint of the fixed seat (41) and the internal spline shaft (1) is provided with a reinforcing part (9), and the joint of the transmission seat (8) and the external spline shaft (2) is provided with a reinforcing part (9).

5. The novel hollow shaft yoke as claimed in claim 1, characterized in that the outside of the external spline shaft (2) is further provided with a shielding part (10) corresponding to the sealing rubber gasket (7).