CN221075149U - Axial positioning structure for driving gear of auxiliary box of high-torque transmission - Google Patents
Axial positioning structure for driving gear of auxiliary box of high-torque transmission Download PDFInfo
- Publication number
- CN221075149U CN221075149U CN202323050434.6U CN202323050434U CN221075149U CN 221075149 U CN221075149 U CN 221075149U CN 202323050434 U CN202323050434 U CN 202323050434U CN 221075149 U CN221075149 U CN 221075149U
- Authority
- CN
- China
- Prior art keywords
- auxiliary box
- driving gear
- oil pipe
- spline
- axial positioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 48
- 238000003825 pressing Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 40
- 239000010687 lubricating oil Substances 0.000 abstract description 11
- 238000005461 lubrication Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model discloses an axial positioning structure of a large-torque transmission auxiliary box driving gear, which belongs to the technical field of automobile design and manufacture, and utilizes a spline pad 6 to axially position an auxiliary box driving gear 5, and the structure is safer and more reliable, and can reduce the failure rate of an assembly product, the after-sale maintenance cost and the claim amount; the two shafts 3 of the assembly product and the auxiliary box main shaft 8 are utilized to force the lubricating oil duct, so that the lubricating oil flows into the contact surfaces of the spline pad and the auxiliary box driving gear through a designed gap to realize forced lubrication, the lubrication condition of the position is improved, and the transmission efficiency of the assembly product is improved; the spline pad 6, the cylindrical pin 9 and the oil pipe 7 are all standard components and common components of companies, so that the cost is greatly reduced, and meanwhile, the ingenious design of the spline pad 6, the cylindrical pin 9 and the oil pipe 7 is assembled without special tools, so that the assembly and the maintenance are more convenient and efficient.
Description
Technical Field
The utility model belongs to the technical field of automobile design and manufacture, and relates to an axial positioning structure of a driving gear of a secondary box of a high-torque transmission.
Background
As high horsepower engine technology matures, the market and customers place higher demands on the input torque to the transmission. At present, the conventional medium-heavy truck transmission product is up-twisted to 2800Nm, and the high torque input can reduce the service life of parts in the transmission assembly and even cause the parts to fail. FIG. 1 is a schematic view of an axial positioning structure of a conventional high torque transmission auxiliary box driving gear by using a stop ring, and the structure is summarized as follows: the auxiliary box driving gear is assembled on the two shafts through spline connection; the front end of the auxiliary box driving gear is positioned through a bearing inner ring pressing plate of a two-shaft bearing assembly, a bearing support of the two-shaft bearing assembly is assembled on a two-shaft through spline connection, and an outer ring of the two-shaft bearing assembly is assembled on an inner hole of a bearing of a transmission shell through interference connection; the rear end of the auxiliary box driving gear is positioned through a stop ring, and the stop ring is arranged on the two shaft ring grooves; when the reverse dragging force of the high-torque transmission is large, the stop ring is damaged or even broken and fails, and the transmission can not work directly. According to market fault data analysis, the fault rate of the fracture of the auxiliary box driving gear axial positioning stop ring in the medium-heavy-duty high-torque transmission products is high, and the transmission cannot work normally once the fault occurs.
The solution to the problems in the prior art is to thicken and widen the stop ring, but the method has two defects: the first stop ring is thickened and widened and difficult to assemble, so that the production beat of the transmission assembly is affected; the second non-standard design increases enterprise development and management costs.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model aims to provide an axial positioning structure of a secondary box driving gear of a high-torque transmission, which solves the technical problems that in the prior art, the failure rate of fracture of an axial positioning stop ring of the secondary box driving gear is high, the stop ring is thickened and widened and difficult to assemble, and the production beat of a transmission assembly is influenced.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides a big moment of torsion derailleur auxiliary box drive gear axial positioning structure, includes the diaxon, has seted up the spline on the diaxon and has filled up the groove, and the spline is filled up the inslot and is provided with the spline and fills up the axial positioning that is used for auxiliary box drive gear rear end, has seted up the pinhole in the radial unilateral in the spline of diaxon fills up the groove position, is provided with the cylindric lock in the pinhole, and the oil pipe mounting hole has been seted up to diaxon rear end face axial, is provided with the one end of oil pipe in the oil pipe mounting hole, and the other end of oil pipe sets up in the oil pipe mounting hole of auxiliary box main shaft terminal surface.
Preferably, the transmission further comprises a secondary box driving gear, a two-shaft bearing assembly and a transmission shell, wherein the secondary box driving gear is assembled on the two shafts through spline connection, and the two shafts are supported on the transmission shell through the two-shaft bearing assembly; the front end of the auxiliary box driving gear is axially positioned through a bearing inner ring pressing plate of the biaxial bearing assembly, and the rear end of the auxiliary box driving gear is axially positioned through a spline pad.
Preferably, the spline pad internal spline is a rectangular spline.
Preferably, the cylindrical pin is a standard piece that is in line contact with the rectangular spline of the spline pad.
Preferably, both ends of the cylindrical pin are square, and the cylindrical pin is in surface contact with the rectangular spline of the spline pad.
Preferably, the cylindrical pin holes on the two shafts are in clearance fit with the cylindrical pins.
Preferably, the dimension of the oil pipe mounting hole of the two shafts is phi 16, and the rear end face of the oil pipe mounting hole is also axially machined with a long oil passage phi 11.
Preferably, the front end face of the main shaft of the auxiliary box is axially machined with a phi 16 oil pipe mounting hole and a phi 11 long oil passage, and the orifice of the oil pipe mounting hole is a chamfer circle of phi 20.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The spline pad is used for axially positioning the auxiliary box driving gear, so that the structure is safer and more reliable, the failure rate of an assembly product can be reduced, and the after-sale maintenance cost and the claim amount can be reduced;
(2) The forced lubrication oil duct of the two shafts of the assembly product and the main shaft of the auxiliary box is utilized, so that the lubricating oil flows into the contact surface of the spline pad and the driving gear of the auxiliary box through a designed gap to perform forced lubrication, the lubrication condition of the position is improved, and the transmission efficiency of the assembly product is improved;
(3) Spline pad, cylindric lock and oil pipe three all borrow standard part and company's commonly used piece, very big reduce cost, the ingenious design of three need not specialized tool assembly simultaneously for assembly and maintenance are more convenient high-efficient.
Drawings
FIG. 1 is a schematic view of an axial positioning structure of a secondary box drive gear utilizing a snap ring;
FIG. 2 is a schematic diagram of an axial positioning structure of a secondary box drive gear using spline pads; wherein, (a) is a radial cross-section; (b) is an axial cross-section;
FIG. 3 is a schematic illustration of a lubricating oil flow path;
Fig. 4 is a schematic view of a cylindrical pin structure with square shapes at two ends; wherein (a) is a front view; (b) is a top view;
fig. 5 is a schematic diagram of an assembly flow of the auxiliary box driving gear using the spline pad axial positioning structure.
Wherein: 1-a transmission housing; 2-two-shaft bearing assembly; 3-two axes; 4-a stop ring; 5-auxiliary box driving gears; 6-spline pads; 7-an oil pipe; 8-a main shaft of the auxiliary box; 9-cylindrical pins.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model is described in further detail below with reference to the attached drawing figures:
Referring to fig. 1, a schematic diagram of axial positioning structure of a present high torque transmission auxiliary box driving gear by using a stop ring is shown in the outline of the structure: the auxiliary box driving gear 5 is assembled on the two shafts 3 through spline connection; the front end of the auxiliary box driving gear 5 is positioned through a bearing inner ring pressing plate of the two-shaft bearing assembly 2, a bearing support of the two-shaft bearing assembly 2 is assembled on the two shafts 3 through spline connection, and an outer ring of the two-shaft bearing assembly 2 is assembled on a bearing inner hole of the transmission shell 1 through interference connection; the rear end of the auxiliary box driving gear 5 is positioned through a stop ring 4, and the stop ring 4 is arranged on a ring groove of the two shafts 3; when the reverse dragging force of the high-torque transmission is large, the stop ring 4 is damaged or even broken and fails, and the transmission can not work.
The application mainly aims to solve the problem of fracture failure of the axial positioning stop ring of the driving gear of the auxiliary box of the high-torque transmission, thereby further prolonging the service life of the transmission assembly product.
The application discloses an axial positioning structure of a large-torque transmission auxiliary box driving gear, which is characterized by comprising a two shaft 3, wherein a spline pad groove is formed in the two shaft 3, a spline pad 6 is arranged in the spline pad groove and used for axially positioning the rear end of the auxiliary box driving gear 5, a pin hole is formed in the radial single side of the spline pad groove of the two shaft 3, a cylindrical pin 9 is arranged in the pin hole, an oil pipe mounting hole is axially formed in the rear end surface of the two shaft 3, one end of an oil pipe 7 is arranged in the oil pipe mounting hole, and the other end of the oil pipe 7 is arranged in the oil pipe mounting hole in the end surface of a main shaft 8 of the auxiliary box. The spline pad 6 is used for axially positioning the auxiliary box driving gear 5, so that the structure is safer and more reliable, the failure rate of an assembly product can be reduced, and the after-sale maintenance cost and the claim amount can be reduced; the two shafts 3 of the assembly product and the auxiliary box main shaft 8 are utilized to force the lubricating oil duct, so that the lubricating oil flows into the contact surfaces of the spline pad and the auxiliary box driving gear through a designed gap to realize forced lubrication, the lubrication condition of the position is improved, and the transmission efficiency of the assembly product is improved; the spline pad 6, the cylindrical pin 9 and the oil pipe 7 are all standard components and common components of companies, so that the cost is greatly reduced, and meanwhile, the ingenious design of the spline pad 6, the cylindrical pin 9 and the oil pipe 7 is assembled without special tools, so that the assembly and the maintenance are more convenient and efficient.
In some embodiments, a high torque transmission auxiliary box driving gear axial positioning structure is shown in fig. 2, and mainly comprises an auxiliary box driving gear 5, a spline pad 6, a cylindrical pin 9, an oil pipe 7, a two-shaft 3, an auxiliary box main shaft 8, a two-shaft bearing assembly 2 and a transmission shell 1. The auxiliary box driving gear 5 is assembled on the two shafts 3 through spline connection, and the two shafts 3 are supported on the transmission shell 1 through the two shaft bearing assembly 2; the front end of the auxiliary box driving gear 5 is axially positioned through a bearing inner ring pressing plate of the biaxial bearing assembly 2, the rear end of the auxiliary box driving gear 5 is axially positioned through a spline pad 6, and the spline pad 6 is assembled in a spline pad groove of the biaxial bearing assembly 3; in order to prevent the spline pad 6 from rotating circumferentially and moving backwards, a pin hole with phi 8.5 is machined on a radial single side of the spline pad groove of the two shafts 3, and a cylindrical pin 9 with phi 8 is assembled at the pin hole, so that the purpose of limiting the circumferential rotation of the spline pad 6 is achieved; an oil pipe mounting hole phi 16 and a long oil duct phi 11 are machined on the rear end face of the biaxial 3 in an axial direction, and the oil pipe mounting hole phi 16 and the long oil duct phi 11 are machined on the front end face of the auxiliary box main shaft 8 in an axial direction; the oil pipe 7 is assembled at oil pipe mounting holes of the two shafts 3 and the auxiliary box main shaft 8, the oil pipe 7 mainly plays two roles at the position, the first connecting two shafts 3 and the auxiliary box main shaft 8 play a role in transmitting lubricating oil, the second supporting cylindrical pin 9 limits the cylindrical pin 9 to move towards the center of the two shafts 3, and the function of limiting the circumferential rotation of the spline pad 6 by the cylindrical pin 9 is ensured not to be invalid;
In some embodiments, the tubing mounting hole aperture of the secondary tank spindle 8 is a chamfer circle of phi 20, primarily serving as a guide and preventing the secondary tank spindle 8 from crushing the tubing 7 when the back cover assembly is assembled in; the cylindrical pin hole on the two shafts 3 is in clearance fit with the cylindrical pin 9, the clearance fit of the positions mainly plays two roles, the first party is convenient for disassembly and after-sale maintenance, the second assembly clearance is beneficial to the forced lubrication of the lubricating oil flowing into the contact surface of the spline pad 6 and the auxiliary box driving gear 5, and the flow path of the lubricating oil is shown by an arrow in fig. 3;
In some embodiments, in order to increase the shearing stress area of the cylindrical pin 9, the internal spline of the spline pad 6 is a rectangular spline, and there are two options for the cylindrical pin 9, the first cylindrical pin 9 is a standard component, and the cylindrical pin 9 and the rectangular spline of the spline pad 6 are in line contact; the two ends of the second cylindrical pin 9 are square, as shown in fig. 4, the rectangular spline of the spline pad 6 and the cylindrical pin 9 are in surface contact, so that the shearing stress area of the cylindrical pin 9 is increased, and meanwhile, the risks of misloading are avoided due to the fact that the two ends are processed into square shapes;
The spline pad axial positioning structure is utilized by the large-torque transmission auxiliary box driving gear, so that the high-torque transmission auxiliary box driving gear is high in reliability, more convenient and efficient to assemble and high in part borrowing rate. The application uses the spline pad 6 to axially position the auxiliary box driving gear 5, and the assembly method is completely different from the assembly method which uses the stop ring 4 to axially position at present. When the production line is assembled or after-sales maintained, before the auxiliary box driving gear 5 is assembled and related parts are positioned, the transmission housing 1 comprises the two shafts 3 and the two-shaft bearing assembly 2, and when the auxiliary box driving gear 5 is assembled, the transmission housing 1 is vertically arranged, namely the two shafts 3 are vertical. The specific assembly method of the auxiliary box driving gear 5 and related parts is shown in fig. 5, and is described in detail as follows:
the first step is as in fig. 5 (a): firstly, putting a cylindrical pin 9 into a pin hole of the two shafts 3 based on the two shafts 3 which are vertically assembled, wherein the right end surface of the cylindrical pin 9 is lower than the small diameter of a spline of the two shafts 3 at the moment, so that the auxiliary box driving gear 5 can be conveniently assembled subsequently;
The second step is as in fig. 5 (b): the auxiliary box driving gear 5 is assembled on the two shafts 3 through spline fit, and the front end face of the auxiliary box driving gear contacts the rear end face of the bearing inner ring pressing plate of the two shaft bearing assembly 2 to perform axial limiting;
The third step is as in fig. 5 (c): the spline pad 6 is assembled on the two shafts 3 through spline fit and rotated by a certain angle (angle alpha=360°/spline tooth number Z), so that tooth grooves of the spline pad 6 are opposite to tooth grooves of the two shafts 3, and the subsequent movement and assembly of the cylindrical pins 9 are facilitated;
Fourth step as in fig. 5 (d): pushing the cylindrical pin 9 leftwards by a finger or a tool to enable the right end face of the cylindrical pin 9 to be close to the heel of the spline pad 6, and enabling the left end face of the cylindrical pin 9 to be lower than the oil pipe placing hole of the two shafts 3, so that the subsequent assembly of the oil pipe 7 is facilitated;
Fifth step as in fig. 5 (e): the oil pipe 5 is inserted into the oil pipe placing hole of the two shafts 3, so that the oil pipe is vertical, and the auxiliary box main shaft 8 is convenient to assemble subsequently;
The sixth step is as in fig. 5 (f): the transmission rear cover assembly is assembled so that the other end of the oil pipe is inserted into the oil pipe placing hole of the auxiliary box main shaft 8.
In summary, the spline pad 6 is utilized to axially position the auxiliary box driving gear 5, so that the structure is safer and more reliable, the failure rate of the assembly product can be reduced, and the after-sale maintenance cost and the claim amount can be reduced; the two shafts 3 of the assembly product and the auxiliary box main shaft 8 are utilized to force the lubricating oil duct, so that the lubricating oil flows into the contact surfaces of the spline pad and the auxiliary box driving gear through a designed gap to realize forced lubrication, the lubrication condition of the position is improved, and the transmission efficiency of the assembly product is improved; the spline pad 6, the cylindrical pin 9 and the oil pipe 7 are all standard components and common components of companies, so that the cost is greatly reduced, and meanwhile, the ingenious design of the spline pad 6, the cylindrical pin 9 and the oil pipe 7 is assembled without special tools, so that the assembly and the maintenance are more convenient and efficient.
The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.
Claims (8)
1. The utility model provides a big moment of torsion derailleur auxiliary box drive gear axial positioning structure, a serial communication port, including diaxon (3), the spline pad groove has been seted up on diaxon (3), the spline pad inslot is provided with spline pad (6) and is used for the axial positioning of auxiliary box drive gear (5) rear end, the pinhole has been seted up in the radial unilateral in spline pad groove position of diaxon (3), be provided with cylindric lock (9) in the pinhole, oil pipe mounting hole has been seted up to diaxon (3) rear end face axial, be provided with the one end of oil pipe (7) in the oil pipe mounting hole, the other end setting of oil pipe (7) is in the oil pipe mounting hole of auxiliary box main shaft (8) terminal surface.
2. The axial positioning structure of a large torque transmission auxiliary box driving gear according to claim 1, further comprising an auxiliary box driving gear (5), a two-shaft bearing assembly (2) and a transmission shell (1), wherein the auxiliary box driving gear (5) is assembled on the two shafts (3) through spline connection, and the two shafts (3) are supported on the transmission shell (1) through the two-shaft bearing assembly (2); the front end of the auxiliary box driving gear (5) is axially positioned through a bearing inner ring pressing plate of the biaxial bearing assembly (2), and the rear end of the auxiliary box driving gear (5) is axially positioned through a spline pad (6).
3. The axial positioning structure of the driving gear of the auxiliary box of the high-torque transmission according to claim 1, wherein the internal spline of the spline pad (6) is a rectangular spline.
4. A high torque transmission auxiliary box driving gear axial positioning structure according to claim 3, characterized in that the cylindrical pin (9) is a standard piece which is in line contact with rectangular splines of the spline pad (6).
5. A high torque transmission auxiliary box driving gear axial positioning structure according to claim 3, characterized in that the two ends of the cylindrical pin (9) are square, and are in surface contact with rectangular splines of the spline pad (6).
6. The axial positioning structure of the driving gear of the auxiliary box of the high-torque transmission according to claim 1, wherein the cylindrical pin hole on the two shafts (3) is in clearance fit with the cylindrical pin (9).
7. The axial positioning structure of the driving gear of the auxiliary box of the high-torque transmission according to claim 1, wherein the oil pipe mounting hole of the two shafts (3) is phi 16, and the rear end face of the oil pipe mounting hole is also axially machined with a phi 11 long oil duct.
8. The axial positioning structure of the driving gear of the auxiliary box of the high-torque transmission according to claim 1, wherein a phi 16 oil pipe mounting hole and a phi 11 long oil passage are machined on the front end surface of the main shaft (8) of the auxiliary box in the axial direction, and the orifice of the oil pipe mounting hole is a chamfer circle of phi 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323050434.6U CN221075149U (en) | 2023-11-10 | 2023-11-10 | Axial positioning structure for driving gear of auxiliary box of high-torque transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323050434.6U CN221075149U (en) | 2023-11-10 | 2023-11-10 | Axial positioning structure for driving gear of auxiliary box of high-torque transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221075149U true CN221075149U (en) | 2024-06-04 |
Family
ID=91273221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323050434.6U Active CN221075149U (en) | 2023-11-10 | 2023-11-10 | Axial positioning structure for driving gear of auxiliary box of high-torque transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221075149U (en) |
-
2023
- 2023-11-10 CN CN202323050434.6U patent/CN221075149U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH11148492A (en) | Fixing device for compressor impeller to be used for high speed turbo machine | |
| CN110725869B (en) | Explosion-proof type electric control hydraulic clutch | |
| CN221075149U (en) | Axial positioning structure for driving gear of auxiliary box of high-torque transmission | |
| CN103912592A (en) | Connection mechanism of power transmission system | |
| CN206972510U (en) | Gear pump | |
| CN211501317U (en) | Mine driving belt thrust wheel capable of bearing large axial force | |
| CN209801130U (en) | Oil pump | |
| CN210178891U (en) | Loader transaxle hub reduction gear planet wheel bearing lubricating structure | |
| CN201037470Y (en) | Receded disk impeller radial end-face pin connecting device | |
| CN112092542A (en) | Articulated tipper wheel reduction gear and vehicle | |
| CN206816697U (en) | Shaft transmission device | |
| CN214788667U (en) | High-bearing high-precision crowned tooth coupling | |
| CN206738424U (en) | A kind of shaft coupling of rapid and convenient formula | |
| CN213322514U (en) | Articulated formula tipper wheel reduction gear and vehicle | |
| CN201003590Y (en) | Double-turbine hydraulic torque converter structure improvement | |
| CN221527972U (en) | Performance test device for hydraulic torque converter assembly | |
| CN2443193Y (en) | Double turbine hydraulic pitch changer | |
| CN218818081U (en) | Power takeoff assembly with forced lubrication | |
| CN215293455U (en) | Transmission mechanism of high-precision rotary table | |
| CN219299790U (en) | Driving device of shovel plate of heading machine and heading machine | |
| CN209781664U (en) | integral direct gear assembly structure for gearbox | |
| CN216200334U (en) | Parallel shaft helical gear speed reducer | |
| CN219623221U (en) | Vertical mill gear box output structure, gear box transmission assembly, planetary gear box and power assembly | |
| CN210661299U (en) | Loader gearbox steering pump power take-off spline lubricating structure | |
| CN2435564Y (en) | Elliptical roller coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |