CN107269727B - Automobile transmission shaft structure - Google Patents
Automobile transmission shaft structure Download PDFInfo
- Publication number
- CN107269727B CN107269727B CN201710687424.3A CN201710687424A CN107269727B CN 107269727 B CN107269727 B CN 107269727B CN 201710687424 A CN201710687424 A CN 201710687424A CN 107269727 B CN107269727 B CN 107269727B
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- Prior art keywords
- shell
- bearing bush
- shaft
- mounting part
- mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0056—Elastomers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to an automobile transmission shaft structure, which comprises a shaft head, a shell, a shaft fork, a first bearing bush and a second bearing bush, wherein the first bearing bush is arranged on the shell; one end of the shaft head is inserted into one end of the shell and fixedly connected with the shell through a first bearing bush; one end of the shaft fork is inserted into the other end of the shell and fixedly connected with the other end of the shell through a second bearing bush. According to the technical scheme, the shell is made of FRP (fiber reinforced plastic) reinforced plastic, so that the weight of the transmission shaft is reduced, energy is saved, consumption is reduced, the residual unbalance of the transmission shaft is reduced, and the transmission shaft is fixed firmly.
Description
Technical Field
The invention belongs to the technical field of automobile transmission, and particularly relates to an automobile transmission shaft structure.
Background
The transmission shaft assembly consists of a universal joint and a transmission shaft, and sometimes an intermediate support is additionally arranged. It is mainly used for transmitting torque and rotary motion between two shafts whose relative positions are continuously changed in the course of working process.
The transmission shaft assembly is designed to meet the following basic requirements:
1) the power can be reliably transmitted when the relative position of the two connected shafts is ensured to be changed within an expected range.
2) Ensuring that the two connected shafts run at the same speed as much as possible. The additional load, vibration and noise due to the joint angle should be within the allowable range.
3) High transmission efficiency, long service life, simple structure, convenient manufacture, easy maintenance and the like.
The transmission shaft assembly is widely applied to automobiles. In a front-engine rear-wheel or all-wheel driven automobile, a cross-shaft transmission shaft assembly is generally adopted because the relative positions of the axes of a transmission or transfer case output shaft and a drive axle input shaft are frequently changed due to the deformation of an elastic suspension. In a steering drive axle, an included angle between an inner half shaft and an outer half shaft is changed along with the driving requirement, and a constant-speed transmission shaft assembly is mostly adopted at the moment. When the rear drive axle is an independent suspension, a transmission shaft assembly must also be adopted.
Whether the universal joint has obvious elasticity in the direction of twisting can be divided into a rigid universal joint and a flexible universal joint. The rigid universal joint transfers power by means of the hinge connection of parts and can be divided into non-constant velocity universal joints (such as cross shafts), quasi-constant velocity universal joints (such as duplex type, convex block type, tripod type and the like) and constant velocity universal joints (such as spherical fork type, rzeppa type and the like). The flexible universal joint transfers power by an elastic part and has the functions of buffering and damping.
A non-constant velocity joint is a joint in which the output shaft and the input shaft transfer motion at a varying instantaneous angular velocity ratio, but the average angular velocity ratio is 1, when the angle between the two drive shafts to which the joint is connected is greater than zero. Quasi-constant velocity joints refer to joints that transmit motion at instantaneous angular velocity ratios equal to 1 when operating at design angles, and approximately equal to 1 when operating at other angles. A joint in which the output shaft and the input shaft transmit motion with an instantaneous angular velocity ratio equal to 1, called constant velocity joint.
At present, each automobile manufacturer carries out automobile lightweight design, and each part needs to carry out lightweight design. The Fiber Reinforced Plastic (FRP) is used for replacing metal materials, so that the mass of parts can be greatly reduced, vibration and noise can be inhibited, the fuel economy is improved, and the carbon dioxide emission is reduced.
In the prior art, the automobile is connected from a transmission to a drive axle by adopting a transmission shaft assembly, the transmission shaft assembly is provided with one or more sections of transmission shafts, and the sections of the transmission shafts are connected together through non-constant velocity universal joints. Fig. 1 shows a prior art propeller shaft assembly, which includes a cross shaft 01, a cross shaft bracket 02, a propeller shaft support 03, a propeller shaft 04, an existing shaft head 041, an existing casing 042, a balance weight 043, and a yoke 044, which form an unequal-speed universal joint.
The bearing is arranged in the transmission shaft support, the bearing inner ring is sleeved on the end shaft, the transmission shaft rotates around the axis of the bearing, and the transmission shaft support is fixed on the vehicle body through the waist-shaped hole.
Needle roller bearings are arranged at the four ends of the cross shaft, and the shaft head and the shaft fork can respectively rotate around the axis of the cross shaft.
When the transmission shaft transmits power, the transmission shaft is mainly acted by torsional force, the larger the diameter is, the smaller the torsional stress is, so that the shaft head and the shaft fork of the transmission shaft adopt long cylindrical metal shells, and the shaft head, the shaft fork and the shells are welded together.
Due to the bending of the transmission shaft, unbalanced weight, center dislocation of the front and rear mounting parts and the like, bending vibration is generated when the transmission shaft rotates, the vibration is increased along with the increase of the speed, when the speed of the transmission shaft is close to the bending natural vibration frequency of the transmission shaft, a resonance phenomenon occurs, so that the amplitude is sharply increased to cause the breakage of the transmission shaft, and the speed is the dangerous rotating speed of the transmission shaft. The dangerous rotational speed of the propeller shaft depends on the size, construction and bearing of the propeller shaft. A mass block vibration damper is added on the transmission shaft, so that the magnitude of dangerous rotating speed can be changed, and the dangerous rotating speed can be kept away from the working rotating speed.
In the transmission shaft assembly in the prior art, the transmission shaft shell is a long cylindrical metal shell, so that the requirement on machining precision is high, and the weight is large; different sizes of balance blocks are required and are also welded to the shell, and the welding stress affects the torsional strength of the shell.
Disclosure of Invention
The invention aims to provide an automobile transmission shaft structure to solve the problems that a transmission shaft assembly in the prior art is heavy in weight, high in machining precision requirement and needs balance blocks with different sizes.
The invention is realized by the following technical scheme:
an automobile transmission shaft structure comprises a shaft head, a shell, a shaft fork, a first bearing bush and a second bearing bush;
one end of the shaft head is inserted into one end of the shell and is fixedly connected with the shell through the first bearing bush; one end of the shaft fork is inserted into the other end of the shell and fixedly connected with the other end of the shell through the second bearing bush.
The spindle head is a rotating body and sequentially comprises a cross shaft bracket mounting part, a bearing mounting part, a first bearing bush mounting part and a shell mounting part along the axial direction of the spindle head;
the cross shaft bracket mounting part, the bearing mounting part, the first bearing bush mounting part and the shell mounting part are all of cylindrical structures;
the diameter of the cross-shaft bracket mounting part, the diameter of the bearing mounting part, the diameter of the first bearing bush mounting part and the diameter of the shell mounting part are increased in sequence;
a threaded hole is formed in the outer end face of the cross shaft bracket mounting part, and a cross shaft bracket mounting surface is formed on the side surface of the cross shaft bracket mounting part;
a side surface bearing mounting surface of the bearing mounting portion; a side surface of the first bearing bush mounting portion forms a first bearing bush mounting surface; the end part of the connecting part of the shell mounting part and the first bearing bush mounting part forms an end face, and the side surface of the shell mounting part forms a shell mounting surface.
The first bearing bush and the second bearing bush are identical in structure and can be interchanged.
The first bearing bush comprises a first upper bearing bush and a first lower bearing bush which are oppositely connected; the first upper bearing bush and the first lower bearing bush are fixedly connected through rivets;
the first upper bearing bush and the first lower bearing bush have the same structure and can be interchanged;
the first upper bearing bush comprises a bearing bush body and connecting parts at two ends of the bearing bush body, and rivet holes are formed in the connecting parts;
the bearing bush body is of an arc-shaped structure, a limiting circular ring part is arranged on the inner side of one end of the bearing bush body, and the bearing bush body sequentially comprises a shell fixing part, a first circular arc rotating surface, a second circular arc rotating surface and an inner end cylindrical surface in the axial direction;
the limiting circular ring part is respectively clamped and matched with the first bearing bush mounting part and the end face; the housing fixing portion is fitted to the housing mounting surface of the housing mounting portion.
An end reinforcing rib is arranged on the outer surface of the first bearing bush opposite to the inner end cylindrical surface, and a counterweight ring and a counterweight hole are arranged on the outer surface of the first bearing bush.
The inner diameter of the shell fixing part, the inner diameter of the first arc-shaped rotating surface, the inner diameter of the second arc-shaped rotating surface and the inner end cylindrical surface are sequentially reduced.
The shell is made of fiber reinforced plastics, and comprises a first shell, a transition shell and a shell body in sequence when two ends of the shell extend from the end part to the middle part of the shell;
an inner cylindrical surface is arranged at the end part of the first shell, and a first rotating surface and a second rotating surface are sequentially arranged on the outer surface of the first shell close to the transition shell in the radial direction;
the first rotating surface is matched with the first arc rotating surface; the second rotating surface is matched with the second arc rotating surface; the inner end cylindrical surface is matched with the transition cylindrical surface of the transition shell.
The outer diameter of the first shell, the outer diameter of the transition shell and the outer diameter of the shell body are sequentially increased.
The shaft fork sequentially comprises a shaft fork body and a fork body, wherein the shaft fork body is of a cylindrical structure, a groove is formed in the joint of one end of the fork body and the shaft fork body, a circular end face is arranged on one end face of the fork body, and opposite cross shaft mounting holes are formed in the side surface of the fork body;
and the other end of the shaft fork body is provided with an axial inner blind hole.
The outer diameter of the shaft fork body is larger than that of the shaft fork body.
The invention has the beneficial effects that:
according to the technical scheme, the shell is made of FRP (fiber reinforced plastic) reinforced plastic, so that the weight of the transmission shaft is reduced, energy is saved, consumption is reduced, the residual unbalance of the transmission shaft is reduced, and the transmission shaft is firmly fixed.
Drawings
FIG. 1 is a schematic view of a prior art drive shaft assembly;
FIG. 2 is a schematic view of a transmission shaft according to the present invention;
FIG. 3 is a front view of the drive shaft construction of the present invention;
FIG. 4 is a bottom view of the drive shaft configuration of the present invention;
3 FIG. 35 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 33 3; 3
FIG. 6 is an enlarged view at I of FIG. 5;
FIG. 7 is a schematic view of the spindle head;
FIG. 8 is a schematic view of a bearing shell;
FIG. 9 is a schematic view of the housing;
FIG. 10 is a schematic view of the yoke.
Description of the reference numerals
01 cross shaft, 02 cross shaft bracket, 03 transmission shaft bearing, 04 transmission shaft, 041 existing shaft head, 042 existing shell, 043 balance block, 044 shaft yoke, 1 shaft head, 2 first bearing bush, 3 shell, 4 shaft yoke, 5 rivet, 6 second bearing bush, 11 threaded hole, 12 cross shaft mounting surface, 13 bearing mounting surface, 14 first bearing bush mounting surface, 15 end surface, 16 shell mounting surface, 21 rivet hole, 22 limiting circular ring part, 23 shell fixing part, 24 first circular rotating surface, 25 second circular rotating surface, 26 inner end cylindrical surface, 27 end reinforcing rib, 28 counterweight ring, 29 hole, 31 inner cylindrical surface, 32 first shell, 33 first rotating surface, 34 second rotating surface, 35 transition cylindrical surface, 36 shell body, 41 inner blind hole, 42 shaft yoke body, 43 groove, 44 fork body, 45 cross shaft mounting hole, 46 circular ring end surface.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
The application provides an automobile transmission shaft structure, as shown in fig. 2 to 10, including spindle nose, casing, shaft yoke, first axle bush and second axle bush.
One end of the shaft head is inserted into one end of the shell and fixedly connected with the shell through a first bearing bush; one end of the shaft fork is inserted into the other end of the shell and fixedly connected with the other end of the shell through a second bearing bush.
The spindle nose is a rotating body and sequentially comprises a cross shaft support mounting part, a bearing mounting part, a first bearing bush mounting part and a shell mounting part in the axial direction of the spindle nose.
The cross shaft bracket mounting part, the bearing mounting part, the first bearing bush mounting part and the shell mounting part are all of cylindrical structures.
The diameter of the cross-shaft bracket mounting part, the diameter of the bearing mounting part, the diameter of the first bearing bush mounting part and the diameter of the shell mounting part are increased in sequence.
The outer end face of the cross shaft bracket mounting part is provided with a threaded hole, and the side surface of the cross shaft bracket mounting part forms a cross shaft bracket mounting surface.
A side surface bearing mounting surface of the bearing mounting portion; the side surface of the first bearing bush mounting part forms a first bearing bush mounting surface; an end face is formed at an end portion where the housing mounting portion is connected to the first bearing bush mounting portion, and a side surface of the housing mounting portion forms a housing mounting surface.
The threaded hole 11 and the cross shaft mounting surface 12 are used for connecting a cross shaft bracket; the bearing mounting surface 13 is used for mounting a transmission shaft support bearing; the first bearing bush mounting surface 14 and the end surface 15 are used for mounting and limiting the end part of the first bearing bush 2; the housing mounting surface 16 is used for mounting and bonding the end of the housing 3.
The first bearing bush and the second bearing bush are identical in structure and can be interchanged.
The first bearing bush comprises a first upper bearing bush and a first lower bearing bush which are oppositely connected; the first upper bearing bush and the first lower bearing bush are fixedly connected through rivets.
The first upper bearing bush and the first lower bearing bush have the same structure and can be interchanged.
First upper portion axle bush includes the connecting portion at axle bush body and axle bush body both ends, is provided with the rivet hole on connecting portion.
The bearing bush body is of an arc-shaped structure, a limiting circular ring part is arranged on the inner side of one end of the bearing bush body, and the bearing bush body sequentially comprises a shell fixing part, a first circular arc rotating surface, a second circular arc rotating surface and an inner end cylindrical surface in the axial direction;
the limiting circular part is respectively clamped and matched with the first bearing bush mounting part and the end face; the housing fixing portion is fitted to the housing mounting surface of the housing mounting portion.
An end reinforcing rib is arranged on the outer surface of the first bearing bush opposite to the inner end cylindrical surface, and a counterweight ring and a counterweight hole are arranged on the outer surface of the first bearing bush.
The rivet hole 21 is a rivet through hole and is used for fixedly mounting the first bearing bush 2; the annular surface on the inner side of the limiting annular part 22 is attached to the end surface 15 on the shaft head 1 and the annular end surface 46 on the shaft fork 4, and is used for limiting the outer end of the first bearing bush 2 or the second bearing bush and limiting the two ends of the shell 3; the shell fixing part 23, the first arc-shaped rotating surface 24, the second arc-shaped rotating surface 25 and the inner end cylindrical surface 26 are used for mounting the first bearing bush and the end part of the shell 3, and simultaneously, after the shell 3 is subjected to the action of force and torque, the trend that the first rotating surface 33 and the second rotating surface 34 on the shell 3 move inwards is limited, and the reliability of fixing the end part of the shell 3 is ensured; the end reinforcing ribs 27 are used for improving the strength of the bearing bush; the weight ring 28 serves to reinforce the bearing shell 2, and when the transmission shaft assembly has a large vibration during rotation, a plurality of weight holes 29 can be formed in the weight ring to reduce the weight of the side with a large residual unbalance, so as to reduce the vibration.
The housing 3 is a long rotating body, is made of Fiber Reinforced Plastic (FRP) in which fibers or fiber bundles impregnated with resin are wound, and has an inner cylindrical surface 31, a first housing 32, a first rotating surface 33, a second rotating surface 34, a transition cylindrical surface 35, and a housing body 36. The inner cylindrical surface 31 is a single cylindrical surface, so that winding production and pulling out of a tool after production are facilitated; the first shell 32, the first rotating surface 33 and the second rotating surface 34 are used for mounting the first bearing bush 2 or the second bearing bush, and meanwhile, after the shell 3 is subjected to the action of force and torque, the trend that the first rotating surface 33 and the second rotating surface 34 on the shell 3 move inwards is limited, and the reliability of fixing the end part of the shell 3 is ensured; the transition cylindrical surface 35 is used for transition between the first casing 32 and the casing body 36, and prevents overlarge stress when receiving large force and torque, the diameter of the first casing 32 is D3, the diameter of the transition cylindrical surface 35 is D2, the diameter of the casing body 36 is D1, and D1 < D2 < D3.
The shaft fork comprises a shaft fork body and a fork body in sequence, the shaft fork body is of a cylindrical structure, a groove is formed in the joint of one end of the fork body and the shaft fork body, a circular ring end face is arranged on one end face of the fork body, and opposite cross shaft mounting holes are formed in the side surface of the fork body.
The other end of the shaft fork body is provided with an axial inner blind hole.
The outer diameter of the shaft fork body is larger than that of the shaft fork body.
The shaft fork 4 is provided with an inner blind hole 41, a shaft fork body 42, a groove 43, a fork body 44, a cross shaft mounting hole 45 and a circular ring end face 46. The inner blind hole 41 is used for reducing the weight of the shaft fork 4; the groove 43 and the annular end surface 46 are used for mounting and limiting the end part of the second bearing bush; the shaft fork body 42 is used for mounting and bonding the end part of the shell 3; the fork body 44 and the cross shaft mounting hole 45 are used for mounting a cross shaft.
Firstly, coating glue on a shell mounting surface 16 on the shaft head 1, inserting the shell mounting surface into an inner cylindrical surface 31 at one end of a shell 3, aligning the end surface of the shell 3 with an end surface 15 on the shaft head 1, then coating glue on the outer surface of a first shell 32 on the shell 3, clamping limiting rings 22 of a first upper bearing bush and a first lower bearing bush on two first bearing bushes 2 on the end surface 15 of the shaft head 1 from top to bottom respectively, and finally riveting the upper bearing bush and the lower bearing bush 2 together through four rivet holes 1 on the bearing bushes 2 by using four rivets 5 to complete the mounting of one end of a transmission shaft.
Similarly, glue is coated on the outer surface of the shaft fork body 42 on the shaft fork 4, the shaft fork body is inserted into the inner cylindrical surface 31 at the other end of the shell 3, the end surface of the shell 3 is aligned with the circular ring end surface 46 on the shaft fork 4, glue is coated on the outer surface of the first shell 32 on the shell 3, the limiting circular rings on the upper part and the lower part of the second shaft tile are respectively clamped into the grooves 43 of the shaft fork 4 from top to bottom, the limiting circular rings are attached to the circular ring end surface 46, and finally the upper part and the lower part of the second shaft tile are riveted together by four rivets 5 through four rivet holes 1 on the bearing bush 2 respectively, so that the installation of the other end of the transmission shaft is completed, and the installation of the invention is completed.
The transmission shaft which is installed is arranged on a dynamic balance detection instrument, the transmission shaft is rotated at a high speed, the size and the direction of the residual unbalance of the transmission shaft are measured, a plurality of holes are drilled on the counterweight ring 28 of the bearing bush on one side with the large residual unbalance, the residual unbalance in the direction is eliminated, and the quality detection and the adjustment of the invention are completed.
Principle of operation
Principle 1:
the driving safety of the vehicle is directly influenced by the fracture of the transmission shaft, and the invention adopts triple protection measures to fully ensure the installation reliability of the shell 3, the shaft head 1 and the shaft fork 4.
The first measure is as follows: the inner part and the outer part of the end part of the shell 3 are fixed with the shaft head 1, the shaft fork 4 and the bearing bush 2 together through glue;
and step two: the geometric shapes and sizes of the shell fixing part 23, the first arc rotating surface 24, the second arc rotating surface 25 and the inner end cylindrical surface 26 in the bearing bush 2 are the same as those of the outer surface of the first shell 32 of the shell 3, the first rotating surface 33, the second rotating surface 34 and the transition cylindrical surface 35 respectively, the diameter of the inner end cylindrical surface 26 of the bearing bush 2 is smaller than that of the shell fixing part 23, after the shell 3 is acted by force and torque, the first rotating surface 33 and the second rotating surface 34 on the shell 3 are limited by the upper bearing bush 2 and the lower bearing bush 2 which are riveted together, and the end fixing reliability of the shell 3 is guaranteed.
Taking the third step: the limiting circular parts 22 on the upper and lower bearing bushes 2 riveted together are respectively clamped on the end surface 15 of the shaft head 1, and similarly, the limiting circular parts on the upper and lower parts of the second bearing bush riveted together are respectively clamped in the grooves 43 of the shaft yoke 4, so that the shell 3 and the second bearing bush are further prevented from being separated.
Principle 2:
the transition cylindrical surface 35 is adopted for the transition between the first shell 32 and the shell body 36, so that excessive stress is prevented when large force and torque are applied.
Principle 3:
the FRP material is light, the residual unbalance amount is small, and the balance weight ring 28 of the bearing bush 2 is provided with a plurality of holes, so that the residual unbalance amount of the transmission shaft can be eliminated, and the vibration is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. An automobile transmission shaft structure is characterized by comprising a shaft head, a shell, a shaft fork, a first bearing bush and a second bearing bush;
one end of the shaft head is inserted into one end of the shell and is fixedly connected with the shell through the first bearing bush; one end of the shaft fork is inserted into the other end of the shell and fixedly connected with the other end of the shell through the second bearing bush;
the spindle head is a rotating body and sequentially comprises a cross shaft bracket mounting part, a bearing mounting part, a first bearing bush mounting part and a shell mounting part along the axial direction of the spindle head;
the cross shaft bracket mounting part, the bearing mounting part, the first bearing bush mounting part and the shell mounting part are all of cylindrical structures;
the diameter of the cross-shaft bracket mounting part, the diameter of the bearing mounting part, the diameter of the first bearing bush mounting part and the diameter of the shell mounting part are increased in sequence;
a threaded hole is formed in the outer end face of the cross shaft bracket mounting part, and a cross shaft bracket mounting surface is formed on the side surface of the cross shaft bracket mounting part;
a side surface bearing mounting surface of the bearing mounting portion; a side surface of the first bearing bush mounting portion forms a first bearing bush mounting surface; an end face is formed at the end part of the connecting part of the shell mounting part and the first bearing bush mounting part, and a shell mounting surface is formed on the side surface of the shell mounting part;
the first bearing bush comprises a first upper bearing bush and a first lower bearing bush which are oppositely connected; the first upper bearing bush and the first lower bearing bush are fixedly connected through rivets;
the first upper bearing bush and the first lower bearing bush have the same structure and can be interchanged;
the first upper bearing bush comprises a bearing bush body and connecting parts at two ends of the bearing bush body, and rivet holes are formed in the connecting parts;
the bearing bush body is of an arc-shaped structure, a limiting circular ring part is arranged on the inner side of one end of the bearing bush body, and the bearing bush body sequentially comprises a shell fixing part, a first circular arc rotating surface, a second circular arc rotating surface and an inner end cylindrical surface in the axial direction;
the limiting circular ring part is respectively clamped and matched with the first bearing bush mounting part and the end face; the shell fixing part is matched with a shell mounting surface of the shell mounting part;
the first bearing bush and the second bearing bush have the same structure and can be interchanged;
the inner diameter of the shell fixing part, the inner diameter of the first arc-shaped rotating surface, the inner diameter of the second arc-shaped rotating surface and the inner end cylindrical surface are sequentially reduced;
the shell is made of fiber reinforced plastics, and comprises a first shell, a transition shell and a shell body in sequence when two ends of the shell extend from the end part to the middle part of the shell;
an inner cylindrical surface is arranged at the end part of the first shell, and a first rotating surface and a second rotating surface are sequentially arranged on the outer surface of the first shell close to the transition shell in the radial direction;
the first rotating surface is matched with the first arc rotating surface; the second rotating surface is matched with the second arc rotating surface; the inner end cylindrical surface is matched with the transition cylindrical surface of the transition shell;
the outer diameter of the first shell, the outer diameter of the transition shell and the outer diameter of the shell body are sequentially increased;
the shaft fork sequentially comprises a shaft fork body and a fork body, wherein the shaft fork body is of a cylindrical structure, a groove is formed in the joint of one end of the fork body and the shaft fork body, a circular end face is arranged on one end face of the fork body, and opposite cross shaft mounting holes are formed in the side surface of the fork body;
the other end of the shaft fork body is provided with an axial inner blind hole;
glue is coated on the mounting surface of the shell on the shaft head, glue is coated on the outer surface of the first shell, and glue is coated on the outer surface of the shaft fork body.
2. The automotive propeller shaft structure according to claim 1, wherein an end reinforcing rib is provided on an outer surface of the first bearing shell opposite to the inner cylindrical end surface, and a weight ring and a weight port are provided on the outer surface of the first bearing shell.
3. The automotive drive shaft structure according to claim 1, characterized in that an outer diameter of a yoke body is larger than an outer diameter of the yoke body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687424.3A CN107269727B (en) | 2017-08-11 | 2017-08-11 | Automobile transmission shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687424.3A CN107269727B (en) | 2017-08-11 | 2017-08-11 | Automobile transmission shaft structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269727A CN107269727A (en) | 2017-10-20 |
| CN107269727B true CN107269727B (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710687424.3A Expired - Fee Related CN107269727B (en) | 2017-08-11 | 2017-08-11 | Automobile transmission shaft structure |
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| Country | Link |
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| CN (1) | CN107269727B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594593B (en) * | 2020-06-17 | 2021-04-09 | 宿迁学院 | Brushless direct current motor system with high-precision torque output |
| CN113803361B (en) * | 2021-11-17 | 2022-06-21 | 杭州寰瀛科技有限公司 | New energy automobile reinforcing formula transmission shaft |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089090U (en) * | 1991-03-20 | 1991-11-20 | 地方国营乐清县重型机械配件厂 | Cross axle type universal coupling |
| CN202545610U (en) * | 2012-05-12 | 2012-11-21 | 吉林大学 | Rolling spline cross shaft universal coupling |
| CN203962756U (en) * | 2014-07-22 | 2014-11-26 | 安徽江淮汽车股份有限公司 | Transmission shaft |
| DE102014118398A1 (en) * | 2014-12-11 | 2016-06-16 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Connecting arrangement for torque transmission for use in the drive train of a motor vehicle |
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2017
- 2017-08-11 CN CN201710687424.3A patent/CN107269727B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN107269727A (en) | 2017-10-20 |
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