CN220718371U - 8HP automatic gearbox sun gear shaft bush dismounting device - Google Patents
8HP automatic gearbox sun gear shaft bush dismounting device Download PDFInfo
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- CN220718371U CN220718371U CN202322460394.6U CN202322460394U CN220718371U CN 220718371 U CN220718371 U CN 220718371U CN 202322460394 U CN202322460394 U CN 202322460394U CN 220718371 U CN220718371 U CN 220718371U
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- sun gear
- gear shaft
- bushing
- groove
- diameter
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- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The utility model discloses a dismounting device for a bush of a sun gear shaft of an 8HP automatic transmission, which comprises a base, wherein a first groove is formed in the base, the depth of the first groove is larger than the mounting depth of the bush in the sun gear shaft, and the diameter of the first groove is larger than the outer diameter of the bush; the first pressure head comprises a rod body penetrating through the small-aperture part of the sun gear shaft, a round table is coaxially arranged on the lower end surface of the rod body, and the diameter of the round table is gradually increased from bottom to top; the second pressure head comprises two semi-cylinders, the upper ends of the semi-cylinders are provided with horizontally extending pressing edges, the two semi-cylinders are combined to form a cylinder with the diameter smaller than the inner diameter of the bushing, the upper end faces of the semi-cylinders are coaxially provided with semi-rings, and after the two semi-cylinders are combined, the two semi-rings are in butt joint to form a groove II which can be opened by an inserted round table. Through the structure, the problem that the bushing is not easy to eject out when the bushing is installed in the large-aperture part of the sun gear shaft is effectively solved.
Description
Technical Field
The utility model relates to a bushing dismounting device, in particular to a bushing dismounting device for a sun gear shaft of an 8HP automatic transmission.
Background
The gearbox is widely applied to various power output devices as a speed regulating device, and the 8HP automatic transmission is widely applied to automobiles as a classical automobile transmission. After a period of use, the gearbox requires maintenance, and 8HP automatic transmissions are no exception. Including repair of the sun gear shaft bushing. However, the bushing is an interference fit with the sun gear shaft when installed, and is not manually removable from the sun gear shaft. The existing problem is that the inner hole of the sun gear shaft is a stepped hole, the bush is arranged in the big hole of the sun gear shaft, the inner diameter of the bush is larger than the inner diameter of the small hole of the sun gear shaft, and then the ordinary ejector rod can not eject the bush by extending into the sun gear shaft, so that the bush is very inconvenient to detach.
Disclosure of Invention
The utility model aims to provide a dismounting device for a sun gear shaft bushing of an 8HP automatic transmission, which aims to solve the problem that the existing bushing is inconvenient to dismount from a sun gear shaft.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a dismounting device for a sun gear shaft bushing of an 8HP automatic transmission comprises
The base is provided with a first groove, the depth of the first groove is larger than the installation depth of the bushing in the sun gear shaft, and the diameter of the first groove is larger than the outer diameter of the bushing;
the first pressure head comprises a rod body penetrating through the small-aperture part of the sun gear shaft, a round table is coaxially arranged on the lower end surface of the rod body, and the diameter of the round table is gradually increased from bottom to top;
the second pressure head comprises two semi-cylinders, the upper ends of the semi-cylinders are provided with horizontally extending pressing edges, the two semi-cylinders are combined to form a cylinder with the diameter smaller than the inner diameter of the bushing, the upper end faces of the semi-cylinders are coaxially provided with semi-rings, and after the two semi-cylinders are combined, the two semi-rings are in butt joint to form a groove II which can be opened by an inserted round table.
Preferably, the cross section of the half ring is wedge-shaped, so that a groove II formed after the two half rings are spliced is provided with a bus parallel to the round table.
Preferably, a baffle ring is further arranged on the lower end face of the rod body, the baffle ring is coaxial with the round table, and when the round table stretches out the semi-ring, the baffle ring is in parallel butt joint with the outer side face of the semi-ring.
Preferably, the diameter of the rod body is the same as the diameter of the small hole of the sun gear shaft, so that the rod body can pass through the small hole section of the sun gear shaft in a sliding fit mode.
Preferably, a positioning ring is coaxially arranged on the first groove, the inner diameter of the positioning ring is not smaller than the outer diameter of the bushing, and when the sun gear shaft is arranged on the base, the positioning ring is inserted into the sun gear shaft in a sliding fit mode.
Preferably, the base is also coaxially sleeved with a supporting sleeve, and the rod body is arranged in a sliding fit manner through the supporting sleeve.
The beneficial effects are that: 1. when the bushing in the sun gear shaft is required to be disassembled, a worker places the sun gear shaft on the base, inserts the second pressure head into the sun gear shaft, then drives the first pressure head to be inserted into the sun gear shaft, and as the first pressure head is inserted and moves downwards, the round table on the first pressure head enters the groove II and expands the groove II, and as the groove II expands, the two split half cylinders are separated, and the pressing edge on the half cylinders is immediately propped against the inner side end face of the bushing. At this time, the first ram continues to move downward, and the purpose of pressing the bushing out of the sun gear shaft can be easily achieved due to the blocking of the rolling. 2. The cross section of semi-ring is the wedge to make the recess second that two semi-rings formed move down when getting into recess second at the round platform, the side of round platform can laminate to the lateral wall of recess second, avoids semi-ring or round platform to appear local excessive pressure and take place the condition of deformation. 3. The baffle ring is arranged to know the separation distance of the two half cylinders, so that the phenomenon that the half cylinders are excessively separated to cause the pressing edge to be abutted against the inner side surface of the sun gear shaft is avoided, and the inner side surface of the sun gear shaft is prevented from being pressed along with hanging flowers. 4. The small-aperture part of the rod body, which penetrates through the sun gear shaft in a sliding fit manner, has the effect of ensuring that the pressure head and the sun gear shaft are in a coaxial acting state under the condition of heavy pressure by utilizing the matching relationship between the rod body and the sun gear shaft. 5. The positioning ring is arranged, so that the sun gear shaft can not sideslip when the bushing is detached, the stability of the sun gear shaft when the bushing is detached is guaranteed, and the subsequent first pressure head can be conveniently inserted into the sun gear shaft. 6. The support sleeve is provided to further stabilize the stability of the first ram under heavy pressure.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
FIG. 3 is a schematic view of the structure of the first ram;
FIG. 4 is a schematic view of the structure of the second ram;
FIG. 5 is a top view of FIG. 4;
fig. 6 is a schematic structural view of a sun gear shaft.
Reference numerals: 100. base 110, groove one 120, positioning ring 200, support sleeve 300, first ram 310, rod 320, boss 330, baffle ring 400, second ram 410, half cylinder 411, pressure edge 420, half ring 430, groove two 500, sun gear shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
An 8HP automatic transmission sun gear shaft bushing dismounting device as shown in FIGS. 1-6 comprises a base 100, a first pressure head 300 and a second pressure head 400.
As shown in fig. 2, a first groove 110 is formed on the base, the depth of the first groove is greater than the installation depth of the bushing in the sun gear shaft, and the diameter of the first groove 110 is greater than the outer diameter of the bushing, so that the bushing can conveniently fall into the first groove after being ejected. Meanwhile, a circle of locating ring 120 coaxial with the groove is also arranged on the base, and when the bushing is dismounted, the locating ring is inserted into the large-aperture part of the sun gear shaft in a sliding fit manner so as to position the sun gear shaft and prevent the sun gear bushing from sliding on the base. The inner diameter of the positioning ring is larger than the outer diameter of the bush so as not to affect the ejection of the bush from the sun gear shaft 500.
As shown in fig. 3, the first ram 300 includes an axially extending rod 310 that can pass through a small bore portion of the sun gear shaft to extend into and near the bushing in the sun gear shaft. Preferably, the diameter of the rod 310 is the same as the inner diameter of the small-bore portion of the sun gear shaft, so that the rod can pass through the small-bore portion in a sliding fit manner, and relative shaking of the sun gear shaft and the rod is avoided when the bushing is disassembled. It should be noted that, the lower end surface of the rod body is further provided with a round table 320, and the diameter of the round table gradually increases from bottom to top. Meanwhile, a circle of baffle ring 330 coaxial with the round platform is arranged on the lower end surface of the rod body, and the baffle ring is positioned outside the round platform.
As shown in fig. 4 and 5, the second ram 400 includes two half cylinders 410, which are semicircular in cross section and are combined to form a complete cylindrical cylinder. The diameter of the post formed after the assembly is smaller than the inner diameter of the small-aperture part of the sun gear shaft and the inner diameter of the bushing, so that the two half posts can be inserted into the bushing after the assembly. Meanwhile, the upper end of the half cylinder is also provided with a pressing edge 411 which extends horizontally, and when the two half cylinders are separated in the bushing, the pressing edge can be mortgage on the upper end surface of the bushing so as to prevent the half cylinder from sliding off the bushing. It should be noted that, in order to facilitate separation of the two half cylinders, so that the acting force of the first pressure head can be stably transferred to the bushing through the second pressure head, a half ring 420 is further disposed on the upper end surface of the half cylinder 410, when the two half cylinders are assembled, the two half rings are joined end to form a second groove 430 into which the round table is inserted, and the diameter of the second groove formed when the two half rings 420 are assembled is smaller than the diameter of the round table, so that the round table can horizontally open the two half rings after being inserted into the second groove. It should be further noted that, the cross section of the half ring is preferably wedge-shaped, so that the groove wall of the groove two and the truncated cone have parallel bus, that is, when the truncated cone is inserted into the groove two 430, the side surface of the truncated cone is in a surface contact with the side wall of the groove two.
Finally, the base 100 is further sleeved with a supporting sleeve 200, a constraint hole is formed in the supporting sleeve, and the rod body 310 is arranged in a sliding fit manner through the rod body, so that the cover body can be conveniently inserted into the sun gear shaft after passing through the supporting sleeve.
Working principle: when the bushing in the sun gear shaft needs to be disassembled, the sun gear shaft is placed on the base, positioning is completed through the positioning ring, and then the second pressing head is inserted into the sun gear shaft after being spliced. After the steps are finished, the supporting sleeve is installed on the base, and then the first pressure head is inserted into the sun gear shaft after penetrating through the supporting sleeve in a sliding fit mode. After the rod body of the first pressure head passes through the small-aperture part in the sun gear shaft, the end part is abutted on the second pressure head, the round table on the end surface of the rod body is inserted into the groove II in the second pressure head, along with the continuous downward movement of the round table, the two semi-cylinders in the second pressure head are pushed away by the round table, and the pressing edge is abutted on the upper end surface of the bushing and keeps stable. At this time, as the first ram continues to move downward, the bushing is then pushed out of the sun gear shaft.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An 8HP automatic gearbox sun gear shaft bush dismounting device, its characterized in that: comprising
The sun gear shaft comprises a base (100), wherein a first groove (110) is formed in the base (100), the depth of the first groove (110) is larger than the installation depth of the bushing in the sun gear shaft, and the diameter of the first groove (110) is larger than the outer diameter of the bushing;
the first pressure head (300) comprises a rod body (310) penetrating through a small-aperture part of the sun gear shaft, a round table (320) is coaxially arranged on the lower end surface of the rod body (310), and the diameter of the round table (320) is gradually increased from bottom to top;
the second pressure head (400) comprises two half cylinders (410), the upper ends of the half cylinders (410) are provided with horizontally extending pressure edges (411), the two half cylinders (410) are combined to form a cylinder with the diameter smaller than the inner diameter of the bushing, the upper end faces of the half cylinders (410) are coaxially provided with half rings (420), and after the two half cylinders (410) are combined, the two half rings (420) are in butt joint to form a groove II (430) which can be opened by an inserted round table (320).
2. An 8HP automatic transmission sun gear shaft bushing removal device as defined in claim 1, wherein: the cross section of the half rings (420) is wedge-shaped, so that a groove II (430) formed by splicing the two half rings (420) is provided with a bus parallel to the round table (320).
3. An 8HP automatic transmission sun gear shaft bushing removal device as defined in claim 1, wherein: the lower end face of the rod body (310) is further provided with a baffle ring (330), the baffle ring (330) is coaxial with the round table (320), and when the round table (320) stretches out the semi-ring (420), the baffle ring (330) is in parallel butt on the outer side face of the semi-ring (420).
4. An 8HP automatic transmission sun gear shaft bushing removal device as defined in claim 1, wherein: the diameter of the rod body (310) is the same as the diameter of the small hole of the sun gear shaft, so that the rod body (310) can pass through the small hole section of the sun gear shaft in a sliding fit mode.
5. An 8HP automatic transmission sun gear shaft bushing removal device as defined in claim 1, wherein: a positioning ring (120) is coaxially arranged on the first groove (110), the inner diameter of the positioning ring (120) is not smaller than the outer diameter of the bushing, and when the sun gear shaft is arranged on the base (100), the positioning ring (120) is inserted into the sun gear shaft in a sliding fit mode.
6. An 8HP automatic transmission sun gear shaft bushing removal device as defined in claim 1, wherein: the base (100) is also coaxially sleeved with a supporting sleeve (200), and the rod body (310) is arranged in a sliding fit manner through the supporting sleeve (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322460394.6U CN220718371U (en) | 2023-09-11 | 2023-09-11 | 8HP automatic gearbox sun gear shaft bush dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322460394.6U CN220718371U (en) | 2023-09-11 | 2023-09-11 | 8HP automatic gearbox sun gear shaft bush dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220718371U true CN220718371U (en) | 2024-04-05 |
Family
ID=90502885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322460394.6U Active CN220718371U (en) | 2023-09-11 | 2023-09-11 | 8HP automatic gearbox sun gear shaft bush dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220718371U (en) |
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2023
- 2023-09-11 CN CN202322460394.6U patent/CN220718371U/en active Active
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| GR01 | Patent grant |