CN209925421U

CN209925421U - Engine connecting rod increases journey transmission shaft

Info

Publication number: CN209925421U
Application number: CN201920408762.3U
Authority: CN
Inventors: 谷远东
Original assignee: JIANGSU ZHONGLI GEAR CO Ltd
Current assignee: JIANGSU ZHONGLI GEAR CO Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-01-10
Anticipated expiration: 2029-03-28

Abstract

An engine connecting rod extended-range transmission shaft relates to a transmission shaft. The first universal joint, the shaft tube and the spline housing are sequentially fixedly connected end to end, the spline pair is tightly sleeved at one end of the spline shaft, and the spline shaft, the spline shaft fork and the second universal joint are sequentially fixedly connected end to end; the fixed cover of the end that the spline housing closes on the integral key shaft is equipped with solid fixed ring, gu fixed ring can dismantle fixed connection with the spline pair, be equipped with three spline pair spring between spline pair and the spline shaft fork, the integral key shaft is equipped with well cavity, the addendum of every tooth of integral key shaft all is equipped with the recess along its axial, the surface of central siphon, spline housing and integral key shaft all is equipped with the carburization layer. The utility model prolongs the service life of the transmission shaft, reduces the transmission noise and improves the transmission performance; the pollution of the grease of the telescopic sleeve is avoided, and the service life of the telescopic sleeve is prolonged.

Description

Engine connecting rod increases journey transmission shaft

Technical Field

The utility model relates to a transmission shaft, especially an engine connecting rod increases journey transmission shaft.

Background

The automobile transmission shaft is an important part for transmitting power in an automobile transmission system and comprises a shaft tube, a telescopic sleeve and a universal joint, wherein the telescopic sleeve can automatically adjust the change of the distance between a transmission and a drive axle, and the universal joint ensures the change of the included angle between two axes of an output shaft of the transmission and an input shaft of the drive axle and realizes the equal angular speed transmission of the two shafts. The transmission shaft of the automobile is a rotating body with high rotating speed and less support. The internal spline and the external spline of the traditional transmission shaft telescopic sleeve are both made of steel parts, and because the steel parts are heavy in weight and large in rotational inertia, the energy consumption generated in the running process of an automobile is high, and the traditional transmission shaft telescopic sleeve is not beneficial to environmental protection. With the continuous promotion of the light-weighted work of automobiles, more and more aluminum alloy transmission shafts and parts are applied to automobiles, however, the transmission shaft performance is deteriorated due to the fact that the transmission shaft tube body of the aluminum alloy transmission shaft is damaged, the shape and the size of the transmission shaft tube body are changed due to the defects that the aluminum alloy is small in density, high in conductivity, low in high-temperature strength, and prone to crushing of prefabricated salient points and the like. Meanwhile, the existing telescopic sleeve matching mode has large clearance, is easy to generate vibration noise and is not beneficial to the NVH performance of the whole vehicle; in addition, the dustproof sealing sleeve structure that adopts of current expansion sleeve, the oil blanket direct fit causes the oil blanket to have sliding motion with the excircle on the spline housing excircle, if there is silt on the excircle, will lead to the oil blanket damaged, and external silt and dust get into the expansion sleeve very easily, lead to the expansion sleeve grease to pollute, have shortened the life of expansion sleeve.

Disclosure of Invention

For solving the problem that exists among the background art, the utility model provides an engine connecting rod increases journey transmission shaft.

The purpose is achieved, the utility model adopts the following technical proposal: an engine connecting rod range-extending transmission shaft comprises a first universal joint, a second universal joint, a shaft tube, a fixing ring, a spline pair, a spline sleeve, a spline shaft fork and three spline pair springs; the first universal joint, the shaft tube and the spline housing are sequentially fixedly connected end to end, the spline pair is tightly sleeved at one end of the spline shaft, and the spline shaft, the spline shaft fork and the second universal joint are sequentially fixedly connected end to end; the fixed cover of the one end that the spline housing closes on the integral key shaft is equipped with solid fixed ring, gu fixed ring can dismantle fixed connection with the spline pair, be equipped with three spline pair spring between spline pair and the spline shaft fork, the integral key shaft is equipped with well cavity, and the addendum of every tooth of integral key shaft all is equipped with the recess along its axial, the surface of central siphon, spline housing and integral key shaft all is equipped with the carburization layer.

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

1. the utility model discloses an aluminium alloy material is all adopted to central siphon, spline housing, integral key shaft and spline shaft fork, all is equipped with the carburization layer on the surface of central siphon, spline housing and integral key shaft simultaneously, through using aluminium alloy material weight reduction, simultaneously through the surface recarburization, obtains higher hardness, reinforcing wearability and fatigue resistance, and the axis body is inside still to keep high plasticity and toughness, reduces cracked risk to the life of extension transmission shaft.

2. The utility model discloses the tooth top of every tooth of integral key shaft all is equipped with the recess, makes the transmission process more in the same direction as smooth, the transmission precision is higher, bearing capacity is stronger, has reduced the air current impact then, has reduced the transmission noise, has improved driven performance.

3. The utility model discloses the vice suit of spline is on the integral key shaft closely, and after pollutants such as silt and dust among the transmission process dropped on the integral key shaft, along with going on of motion process, the spline is vice can push away above-mentioned pollutant, protects the oil blanket then, avoids the pollution of flexible cover grease, has prolonged the life of flexible cover.

Drawings

FIG. 1 is an isometric view of the overall construction of an engine connecting rod extended range transmission shaft of the present invention;

FIG. 2 is a disassembled view of the spline housing, the retainer ring and the spline pair;

FIG. 3 is an isometric view of the integral construction of the spline shaft, spline shaft yoke and second universal joint;

fig. 4 is a schematic view of the connection relationship between the latch and the slider.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In a first specific embodiment, as shown in fig. 1 ~ and fig. 4, the utility model discloses an engine connecting rod range-extending transmission shaft, which comprises a first universal joint 1-1, a second universal joint 1-2, a shaft tube 2, a fixing ring 3, a spline pair 4, a spline housing 5-1, a spline shaft 5-2, a spline shaft fork 7 and three spline pair springs 6-1, wherein the first universal joint 1-1, the shaft tube 2 and the spline housing 5-1 are sequentially and head-to-tail fixedly connected, the spline pair 4 is tightly sleeved at one end of the spline shaft 5-2, the spline shaft fork 7 and the second universal joint 1-2 are sequentially and head-to-tail fixedly connected, the fixing ring 3 is fixedly sleeved at one end of the spline housing 5-1 close to the spline shaft 5-2, the fixing ring 3 is detachably and fixedly connected with the spline pair 4, the spline pair 4 is processed by adopting a cold extrusion molding process, three spline pair springs 6-1 are arranged between the spline pair 4 and the spline shaft fork 7, one end face of the spline pair 4 close to the spline shaft fork 7 is provided with three spline pair springs 6-1, the spline seat is provided with a spline seat mounting groove 10 along the circumferential direction, the spline seat mounting groove 10 is provided along the spline seat, the spline seat mounting groove is provided along the spline mounting groove of the spline 5-spline 2, the spline mounting groove is provided along the spline mounting groove of the spline shaft mounting groove, the spline shaft mounting groove is provided along the spline shaft mounting groove of the spline 5-groove, the spline shaft mounting groove of the spline shaft mounting groove mounting.

The second embodiment is as follows: as shown in fig. 1 and 2, in the present embodiment, a first specific embodiment is further described, three insertion holes a are formed in an end surface of the fixing ring 3 in a thickness direction of the fixing ring, three clamping blocks 8 corresponding to the three insertion holes a are fixed on an end surface of the spline pair 4 adjacent to the fixing ring 3, and the three clamping blocks 8 are respectively fixed to the corresponding insertion holes a in a clamping manner.

The third concrete implementation mode: as shown in fig. 2, this embodiment is a further description of the second embodiment, and the three insertion holes a are arranged at equal angles in the circumferential direction of the fixing ring 3.

The fourth concrete implementation mode: as shown in fig. 4, in this embodiment, a second specific embodiment or a third specific embodiment is further described, a sliding groove D is formed in an upper surface of each of the clamping blocks 8, a sliding block 9 is arranged in each of the sliding grooves D, and each of the sliding blocks 9 is fixedly connected to an inner bottom surface of the corresponding sliding groove D through a sliding block spring 6-2.

The fifth concrete implementation mode: in this embodiment, the depth of the carburized layer is 0.4 to 0.6mm, which is described further below with reference to the first embodiment.

The sixth specific implementation mode: in the first embodiment, friction welding is adopted to weld the shaft tube 2 and the spline housing 5-1 and the spline shaft 5-2 and the spline shaft yoke 7. The shaft tube 2, the spline housing 5-1, the spline shaft 5-2 and the spline shaft fork 7 are all made of aluminum alloy materials. In particular to aluminum alloy 6061-T6.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms of embodiment without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An engine connecting rod extended-range transmission shaft comprises a first universal joint (1-1), a second universal joint (1-2), a shaft tube (2), a spline pair (4), a spline housing (5-1), a spline shaft (5-2) and a spline shaft fork (7), wherein the first universal joint (1-1), the shaft tube (2) and the spline housing (5-1) are sequentially fixedly connected end to end, the spline pair (4) is tightly sleeved at one end of the spline shaft (5-2), and the spline shaft (5-2), the spline shaft fork (7) and the second universal joint (1-2) are sequentially fixedly connected end to end; the method is characterized in that: the transmission shaft further comprises a fixing ring (3) and three spline pair springs (6-1); the fixed cover of one end that spline housing (5-1) closes on integral key shaft (5-2) is equipped with solid fixed ring (3), gu fixed ring (3) can dismantle fixed connection with spline pair (4), be equipped with three spline pair spring (6-1) between spline pair (4) and spline shaft fork (7), integral key shaft (5-2) are equipped with well cavity, and the addendum of each tooth of integral key shaft (5-2) all is equipped with recess (B) along its axial, the surface of central siphon (2), spline housing (5-1) and integral key shaft (5-2) all is equipped with the carburization layer.

2. The engine connecting rod extended range driveshaft of claim 1, wherein: one end face of the fixing ring (3) penetrates through the thickness direction of the fixing ring to be provided with three insertion holes (A), one end face of the spline pair (4) close to the fixing ring (3) is fixed with three clamping blocks (8) corresponding to the three insertion holes (A), and the three clamping blocks (8) are fixed with the corresponding insertion holes (A) in a clamped mode respectively.

3. The engine connecting rod extended range driveshaft of claim 2, wherein: the three jacks (A) are arranged at equal angles along the circumferential direction of the fixing ring (3).

4. An engine connecting rod extended range drive shaft according to claim 2 or 3, wherein: each upper surface of the fixture block (8) is provided with a sliding groove (D), each sliding groove (D) is internally provided with a sliding block (9), and each sliding block (9) is fixedly connected with the inner bottom surface of the corresponding sliding groove (D) through a sliding block spring (6-2).

5. The engine connecting rod extended range driveshaft of claim 1, wherein: the depth of the carburized layer is 0.4-0.6 mm.

6. The engine connecting rod extended range driveshaft of claim 1, wherein: and friction welding is adopted between the shaft tube (2) and the spline sleeve (5-1) and between the spline shaft (5-2) and the spline shaft fork (7) for forming.