CN213808437U - Long necking transmission shaft - Google Patents
Long necking transmission shaft Download PDFInfo
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- CN213808437U CN213808437U CN202022481127.3U CN202022481127U CN213808437U CN 213808437 U CN213808437 U CN 213808437U CN 202022481127 U CN202022481127 U CN 202022481127U CN 213808437 U CN213808437 U CN 213808437U
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- transmission shaft
- shaft tube
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- tube
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Abstract
The utility model discloses a long necking transmission shaft, which mainly comprises a spline shaft, a shaft tube component and a welding fork, wherein the spline shaft is cylindrical and is horizontally arranged; the shaft tube assembly comprises a transmission shaft tube and a long necking structure, wherein the transmission shaft tube is pressed into the port at one end of the spline shaft through a tool, the long necking structure is arranged on the transmission shaft tube, the transmission shaft tube is a cylinder, the tops of two ends of the transmission shaft tube are provided with upper positioning holes, and the bottom of the transmission shaft tube is provided with a lower positioning hole; the welding fork is in a U-shaped symmetrical cylinder structure, and is pressed into the shaft tube through the other end of the transmission shaft tube in an interference manner through a tool and welded at the pressed part. The utility model discloses rational in infrastructure, the dynamic balance precision of transmission shaft assembly has been guaranteed to the modern design, has improved the dynamic balance performance of follow-up transmission shaft assembly.
Description
Technical Field
The utility model relates to a transmission shaft technical field specifically is a long throat transmission shaft.
Background
The transmission shaft assembly generally comprises shaft tubes, shaft parts, welding forks and other parts, wherein the shaft parts (such as a middle spline shaft and a rear spline shaft) and the welding forks are pressed into the shaft tubes through a tool in an interference fit mode, and finally the shaft parts and the welding forks are assembled into an assembly in a welding mode, and one problem that the parts are pressed onto the shaft tubes possibly exists is that: the part tang diameter does not match with the central siphon internal diameter, and the part tang diameter is little, and the central siphon internal diameter is big, leads to unable pressure equipment, consequently needs in production to the central siphon throat, dwindles the central siphon internal diameter. At present, the shaft tube necking adopts a short necking, and after the part is pressed and installed due to the short necking, the jumping amount is too large, the consistency is poor, and the jumping precision of a spigot cannot be controlled, so that the dynamic balance performance of a subsequent transmission shaft assembly can be influenced.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
Therefore, the utility model aims at providing a long throat transmission shaft, the utility model discloses rational in infrastructure, the dynamic balance precision of transmission shaft assembly has been guaranteed to the modern design, has improved the dynamic balance performance of follow-up transmission shaft assembly.
For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:
a long necked drive shaft, comprising:
the spline shaft is horizontally placed and is cylindrical;
the shaft tube assembly comprises a transmission shaft tube and a long necking structure, wherein the transmission shaft tube is pressed into the port at one end of the spline shaft through a tool;
the welding fork is in a U-shaped symmetrical cylinder structure, and is pressed into the shaft tube through the other end of the transmission shaft tube in an interference manner through a tool and welded at the pressed part.
As an optimal scheme of long throat transmission shaft, wherein, the transmission shaft central siphon changes short throat central siphon into long throat structure through the draw mould.
As an optimal selection scheme of long throat transmission shaft, wherein, integral key shaft both sides wall is impressed through the frock through raising with horizontal plane angle of elevation fifteen degrees transmission shaft central siphon inner wall.
As an optimal selection scheme of long throat transmission shaft, the transmission shaft central siphon is the cylinder, and the locating hole has been seted up at its both ends top, and the locating hole has been seted up down to its bottom.
Compared with the prior art, the utility model relates to a long throat transmission shaft has beneficial effect is: the utility model discloses transmission shaft central siphon designs long throat structure, central siphon both ends part is impressed through the frock and is welded assembly spare again, compare short throat structure, long throat has guaranteed the internal diameter runout of central siphon, reached high accuracy 0.15 mm's tolerance design requirement of beating, can guarantee the dynamic balance precision of transmission shaft assembly, to short throat structure, central siphon internal diameter runout uniformity is poor, and the central siphon part of a batch throat can reach more than 0.6mm to the utmost, will directly influence the dynamic balance performance of follow-up transmission shaft assembly. The utility model discloses rational in infrastructure, the dynamic balance precision of transmission shaft assembly has been guaranteed to the modern design, has improved the dynamic balance performance of follow-up transmission shaft assembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:
fig. 1 is a schematic view of an overall structure of a long-necking transmission shaft of the present invention;
fig. 2 is a schematic view of a long necking structure in a long necking transmission shaft of the present invention;
fig. 3 is a top view of the long necking transmission shaft of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The utility model provides a long throat transmission shaft, the utility model discloses transmission shaft central siphon designs long throat structure, and central siphon both ends part is impressed through the frock and is welded assembly spare again, compares short throat structure, and the internal diameter of central siphon is beated in long throat has guaranteed the internal diameter of central siphon, has reached high accuracy 0.15 mm's tolerance design requirement of beating, can guarantee the dynamic balance precision of transmission shaft assembly, to short throat structure, the internal diameter of central siphon is beated the momentum uniformity poor, and the central siphon part of a batch throat can reach more than 0.6mm to the greatest extent, will directly influence the dynamic balance performance of follow-up transmission shaft assembly.
Fig. 1-2 show an embodiment of a long-necking transmission shaft according to the present invention, please refer to fig. 1. The utility model discloses a main part is integral key shaft, central siphon subassembly and welding fork.
The spline shaft 100 is a shaft part, and can be replaced by a middle spline shaft or a rear spline shaft and other like parts in the production and manufacturing process, the spline shaft 100 is used for connecting the transmission shaft tube 210 to be assembled with other parts into an assembly, the specific working process of the spline shaft 100 is that positioning holes are arranged at the top and the bottom of the two ends of the spline shaft 100, the spline shaft 100 is assembled into the assembly through the positioning holes and the positioning holes at the two ends of the transmission shaft tube 210 in a special tool pressing-in mode, and the pressing-in part is welded.
The shaft tube assembly 200 is a main body part of the transmission shaft, the shaft tube assembly 200 is used for connecting a spline shaft 100 and other like parts and a welding yoke 300 and the like to form an assembly, and the shaft tube assembly 200 comprises a transmission shaft tube 210 pressed into one end port of the spline shaft 100 through a tool and a long necking structure 220 arranged on the transmission shaft tube 210. Different from the existing shaft tube, the utility model discloses a draw the mould and change the short throat shaft tube into long throat structure 220. The specific work flow of central siphon subassembly 200 changes the body into long throat structure 220 for transmission shaft central siphon 210 through the draw pipe mould, transmission shaft central siphon 210 both ends and spline pipe 100 equiaxial parts and welding fork 300 pass through the frock and impress into assembly spare and weld firmly to the department of impressing, compare short throat structure, transmission shaft central siphon 220 has been guaranteed to long throat structure 220's internal diameter runout, the run-out tolerance design requirement of high accuracy 0.15mm has been reached, can guarantee the dynamic balance precision of transmission shaft assembly, to short throat structure, central siphon internal diameter runout amount uniformity is poor, and the central siphon part of a batch of throats can reach more than 0.6mm at utmost, will directly influence the dynamic balance performance of follow-up transmission shaft assembly.
The welding fork 300 is used for being connected with the other end of the transmission shaft tube 210 in a press-in mode, so that the welding fork and the spline shaft 100 and other like parts are pressed in together to form a transmission shaft assembly, the welding fork 300 is in a U-shaped symmetrical cylinder structure, and the welding fork and the other end of the transmission shaft tube 210 are pressed into the inner wall of the transmission shaft tube 210 through a tool in an interference mode and are welded at the pressed-in position. The specific work flow of the welding fork 300 is that the welding fork 300 is of a cylindrical structure which is symmetrically arranged up and down, positioning holes are formed in the top end and the bottom end of the welding fork 300, and the welding fork 300 and the positioning holes in the two ends of the transmission shaft tube 210 are pressed into the inner wall of the transmission shaft tube 210 through a tool, so that the welding fork and other components are pressed into and welded to form a transmission shaft assembly.
The utility model relates to a specific embodiment of long throat transmission shaft is equipped with the locating hole for the top at integral key shaft 100 both ends rather than the bottom, integral part is assembled through the mode that special frock is impressed to the locating hole that integral key shaft 100 passes through locating hole and transmission shaft central siphon 210 both ends to weld the department of impressing. Transmission shaft central siphon 210 changes the body into long throat structure 220 through the draw pipe mould, transmission shaft central siphon 210 both ends are pressed in assembly spare and are welded the firm through frock with spline pipe 100 equiaxial parts and welding fork 300 and locate to weld, compare short throat structure, transmission shaft central siphon 220 has been guaranteed to long throat structure 220's internal diameter and is beated, the tolerance design requirement of beating of high accuracy 0.15mm has been reached, the dynamic balance precision of transmission shaft assembly can be guaranteed, to short throat structure, the internal diameter runout quantity uniformity of central siphon is poor, and the central siphon part of a batch throat can reach more than 0.6mm the most, will directly influence the dynamic balance performance of follow-up transmission shaft assembly. The welding fork 300 is of a cylindrical structure which is symmetrically arranged up and down, positioning holes are formed in the top end and the bottom end of the welding fork 300, the welding fork 300 and the positioning holes in the two ends of the transmission shaft tube 210 are pressed into the inner wall of the transmission shaft tube 210 through a tool, and therefore the welding fork and other components are pressed into the inner wall of the transmission shaft tube 210 to form a transmission shaft assembly. The utility model discloses rational in infrastructure, the dynamic balance precision of transmission shaft assembly has been guaranteed to the modern design, has improved the dynamic balance performance of follow-up transmission shaft assembly. The abrasion degree of the transmission shaft in continuous work is reduced, and the service life of the transmission shaft is prolonged.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. A long necked drive shaft, comprising:
a spline shaft (100) horizontally placed in a cylindrical shape;
the shaft tube assembly (200) comprises a transmission shaft tube (210) and a long necking structure (220), wherein the transmission shaft tube (210) is pressed into the port at one end of the spline shaft (100) through a tool, and the long necking structure is arranged on the transmission shaft tube (210);
the welding fork (300) is in a U-shaped symmetrical cylinder structure, and is pressed into the inner wall of the transmission shaft tube (210) through the other end of the transmission shaft tube (210) in an interference manner through a tool, and the pressed part is welded.
2. A long-necked driving shaft according to claim 1, wherein the shaft tube (210) is formed by a tube reducing mold to change the short-necked shaft tube into a long-necked configuration (220).
3. The long-necking transmission shaft according to claim 1, wherein two side walls of the spline shaft (100) are pressed into the inner wall of the shaft tube (210) of the transmission shaft by a tool after being lifted up to an elevation angle of fifteen degrees with the horizontal plane.
4. The long-necking transmission shaft according to claim 2, wherein the transmission shaft tube (210) is a cylinder, and has upper positioning holes at the top of its two ends and lower positioning holes at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022481127.3U CN213808437U (en) | 2020-11-02 | 2020-11-02 | Long necking transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022481127.3U CN213808437U (en) | 2020-11-02 | 2020-11-02 | Long necking transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213808437U true CN213808437U (en) | 2021-07-27 |
Family
ID=76963577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022481127.3U Active CN213808437U (en) | 2020-11-02 | 2020-11-02 | Long necking transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213808437U (en) |
-
2020
- 2020-11-02 CN CN202022481127.3U patent/CN213808437U/en active Active
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