CN217736244U - Gear shifting actuating mechanism of gearbox - Google Patents
Gear shifting actuating mechanism of gearbox Download PDFInfo
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- CN217736244U CN217736244U CN202221155590.1U CN202221155590U CN217736244U CN 217736244 U CN217736244 U CN 217736244U CN 202221155590 U CN202221155590 U CN 202221155590U CN 217736244 U CN217736244 U CN 217736244U
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Abstract
The utility model discloses a gearbox actuating mechanism that shifts, the declutch shift shaft is installed on the right side in the casing, install the fender position shift fork on the declutch shift shaft, be provided with first cavity in the casing, the second cavity, the third cavity, be provided with first piston between first cavity and second cavity, be provided with the second piston between second cavity and third cavity, first piston and the coaxial arrangement of second piston, first piston and shift fork shaft connection, the second piston is installed in the casing left side, the B gas port has been seted up on the casing, the F gas port, the M gas port, the B gas port communicates with each other with first cavity, the F gas port communicates with each other with the second cavity, the M gas port communicates with each other with the third cavity. The utility model discloses a gearbox automatic gear shifting is realized to the air supply, improves automatic transmission's the selection response and the precision of shifting, and the structure is ingenious, and the practicality is strong.
Description
Technical Field
The utility model relates to the field of machinary, in particular to gearbox actuating mechanism that shifts.
Background
The transmission has the characteristics of high efficiency, low cost and mature production process, and still has great market share at present. However, the manual transmission has the defects of difficult gear shifting, power interruption, great influence of the driver level on the vehicle running performance and the like, and the driving fatigue of the driver is easily caused due to frequent manual gear shifting operation, so that the unsafe factors of driving are increased. Therefore, an automatic transmission replaces a manual transmission to become the mainstream, but the automatic transmission brings comfort and convenience and has the defects of high oil consumption, high cost and difficult maintenance, and an electric control mechanical automatic transmission (AMT) is produced in the environment.
At present, a permanent magnet synchronous brushless direct current motor is selected as a gear selecting and shifting motor of an automatic gearbox to output mechanical motion as rotary motion, and the mechanical motion needs to be converted into linear motion through a mechanical structure to perform gear selecting and shifting, so that the inevitable problems of slow gear shifting response, low mechanical efficiency and the like are caused.
In summary, in the prior art, an effective solution is not yet available for the problem of how to improve the gear selection and shift response and the accuracy of the automatic transmission.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a gearbox actuating mechanism that shifts adopts the air supply to realize gearbox automatic shift, improves automatic transmission's the selection response and the precision of shifting, and the structure is ingenious, and the practicality is strong.
On the one hand, the utility model provides a gearbox actuating mechanism that shifts, the declutch shift shaft is installed on the right side in the casing, install the fender position shift fork on the declutch shift shaft, a serial communication port, be provided with first cavity in the casing, the second cavity, the third cavity, be provided with first piston between first cavity and second cavity, be provided with the second piston between second cavity and third cavity, first piston and the coaxial arrangement of second piston, first piston and fork shaft connection, the second piston is installed in the casing left side, the B gas port has been seted up on the casing, the F gas port, the M gas port, the B gas port communicates with each other with first cavity, the F gas port communicates with each other with the second cavity, the M gas port communicates with each other with the third cavity.
Further, the effective acting area of the first piston is smaller than the effective acting area of the second piston.
Furthermore, a second piston right end limiting step is arranged between the second cavity and the third cavity, and when the second piston abuts against the limiting step, the left end of the shifting fork shaft abuts against the second piston.
The hydraulic control system further comprises an execution valve, wherein a shifting fork gear is arranged on a shifting fork, a rack is arranged on the execution valve, the shifting fork gear is meshed with the rack, and the execution valve drives the shifting fork to deflect; the execution valve is provided with an L air port and an R air port, when an air source enters the execution valve from the L air port to push the gear shifting fork to deflect downwards to enter a low-speed gear region, and when the air source enters the execution valve from the R air port to push the gear shifting fork to deflect upwards to enter a high-speed gear region.
And furthermore, when an air source enters the execution valve from the L air port to push the gear shifting fork to deflect downwards to enter a low-speed gear, the air source enters the first cavity from the B air port to push the first piston to move leftwards, the shifting fork shaft moves leftwards to push the second piston to the left end, the gear shifting fork moves to the left end, and the gearbox is hung in the first gear.
And furthermore, when the air source enters the execution valve from the L air port to push the gear shifting fork to deflect downwards to enter a low-speed gear, the air source enters the second cavity from the F air port to push the first piston to move rightwards, the shifting fork shaft moves rightwards to drive the gear shifting fork to move to the right end, and the gearbox is hung in the second gear.
And furthermore, when an air source enters the execution valve from the L air port to push the gear shifting fork to deflect downwards to enter a low-speed gear, the air source enters the third cavity from the M air port to push the second piston to move rightwards, the air source enters the first cavity from the B air port to push the first piston to move leftwards, and as the effective action area of the first piston is smaller than that of the second piston, the second piston abuts against a limiting step, the left end of the shifting fork shaft abuts against the second piston, the gear shifting fork is in the middle position, and the gearbox is hung in the third gear.
And furthermore, when an air source enters the execution valve from the R air port to push the gear shifting fork to deflect upwards to enter the fast gear, the air source enters the third cavity from the M air port to push the second piston to move rightwards, the air source enters the first cavity from the B air port to push the first piston to move leftwards, the effective action area of the first piston is smaller than that of the second piston, the second piston abuts against the limiting step, the left end of the shifting fork shaft abuts against the second piston, the gear shifting fork is located at the middle position, and the gearbox is hung in a fourth gear.
And furthermore, when an air source enters the execution valve from the R air port to push the gear shifting fork to deflect upwards to enter a quick gear, the air source enters the second cavity from the F air port to push the first piston to move rightwards, the shifting fork shaft moves rightwards to drive the gear shifting fork to move to the right end, and the gearbox is hung in the fifth gear.
And furthermore, when an air source enters the execution valve from the R air port to push the gear shifting fork to deflect upwards to enter a quick gear, the air source enters the first cavity from the B air port to push the first piston to move leftwards, the shifting fork shaft moves leftwards to push the second piston to the left end, the gear shifting fork moves to the left end, and the gearbox is hung in the sixth gear.
The utility model discloses a gearbox actuating mechanism that shifts compares prior art beneficial effect and lies in:
1. because compressed air response speed is fast, adopt the air supply to realize the gearbox automatic gearshift, improve automatic gearbox's the selection response of shifting and the precision, the structure is ingenious, and the practicality is strong.
2. The utility model discloses a gearbox actuating mechanism that shifts has six fender positions, can select the gear shifting automatically, and the structure is ingenious, and the practicality is strong.
Drawings
The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:
fig. 1 is the structure schematic diagram of the gear shifting actuating mechanism of the transmission case of the present invention.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the utility model provides a gearbox actuating mechanism that shifts, declutch shift shaft 11 is installed on the right side in casing 10, install fender position shift fork 12 on declutch shift shaft 11, be provided with first cavity 14 in casing 10, second cavity 15, third cavity 16, be provided with first piston 18 between first cavity 14 and second cavity 15, be provided with second piston 17 between second cavity 15 and third cavity 16, first piston 18 and the coaxial arrangement of second piston 17, first piston 18 is connected with declutch shift shaft 11, second piston 17 installs left side in casing 10, B gas port has been seted up on casing 10, F gas port, M gas port, B gas port communicates with each other with first cavity 14, F gas port communicates with each other with second cavity 15, M gas port communicates with each other with third cavity 16. The effective active area of the first piston 18 is smaller than the effective active area of the second piston 17, so that the thrust of the first piston 18 is smaller than the thrust of the second piston 17 under the same supply pressure. A second piston 17 right end limiting step 19 is arranged between the second cavity 15 and the third cavity 16, and when the second piston 17 abuts against the limiting step 19, the fork shaft 11 left end abuts against the second piston 17.
The gear shifting fork device comprises an execution valve 13, a shifting fork gear 120 is arranged on a gear shifting fork 12, a rack 130 is arranged on the execution valve 13, the shifting fork gear 120 is meshed with the rack 130, and the execution valve 13 drives the gear shifting fork 12 to deflect; an L air port and an R air port are arranged on the execution valve 13, when an air source enters the execution valve 13 from the L air port, the gear shifting fork 12 is pushed to deflect downwards to enter a low-speed gear region, and when the air source enters the execution valve 13 from the R air port, the gear shifting fork 12 is pushed to deflect upwards to enter a quick-speed gear region.
When an air source enters an execution valve 13 from an L air port to push a gear shifting fork 12 to deflect downwards to enter a low-speed gear, the air source enters a first cavity 14 from a B air port to push a first piston 18 to move leftwards, a shifting fork shaft 11 moves leftwards to push a second piston 17 to the left end, the gear shifting fork 12 moves to the left end, and a gearbox is hung in a first gear.
Including the second gear, be the low gear, when the air supply got into execute valve 13 by the L gas port and promoted the downward deflection of fender shift fork 12 and get into low gear region, the air supply got into second cavity 15 by the F gas port simultaneously and promotes first piston 18 and move to the right side, shift fork shaft 11 moves to the right side and drives fender shift fork 12 and move to the right-hand member, and the gearbox is put into the second and is kept off the position.
The gear shifting fork 12 is driven to deflect downwards to enter the low-speed gear by the air source entering the execution valve 13 through the L air port, meanwhile, the air source enters the third cavity 16 through the M air port to drive the second piston 17 to move rightwards, the air source enters the first cavity 14 through the B air port to drive the first piston 18 to move leftwards, the effective action area of the first piston 18 is smaller than that of the second piston 17, the second piston 17 abuts against the limiting step 19, the left end of the shifting fork shaft 11 abuts against the second piston 17, the gear shifting fork 12 is located at the middle position, and the gearbox is hung in the third gear.
The gear shifting fork 12 is driven to deflect upwards to enter the quick gear by the air source entering the execution valve 13 through the R air port, the air source enters the third cavity 16 through the M air port to drive the second piston 17 to move rightwards, the air source enters the first cavity 14 through the B air port to drive the first piston 18 to move leftwards, the effective action area of the first piston 18 is smaller than that of the second piston 17, the second piston 17 abuts against the limiting step 19, the left end of the shifting fork shaft 11 abuts against the second piston 17, the gear shifting fork 12 is located at the middle position, and the gearbox is hung in the fourth gear.
When an air source enters the execution valve 13 from an R air port to push the gear shifting fork 12 to deflect upwards to enter a quick gear, the air source enters the second cavity 15 from an F air port to push the first piston 18 to move rightwards, the shifting fork shaft 11 moves rightwards to drive the gear shifting fork 12 to move to the right end, and the gearbox is hung in the fifth gear.
When an air source enters the execution valve 13 from an R air port to push the gear shifting fork 12 to deflect upwards to enter the quick gear, the air source enters the first cavity 14 from a B air port to push the first piston 18 to move leftwards, the shifting fork shaft 11 moves leftwards to push the second piston 17 to the left end, the gear shifting fork 12 moves to the left end, and the gearbox is hung in the sixth gear.
The techniques not described above are common general knowledge of the skilled person. The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A gear shifting actuating mechanism of a gearbox is characterized in that a first cavity, a second cavity and a third cavity are arranged in the shell, a first piston is arranged between the first cavity and the second cavity, a second piston is arranged between the second cavity and the third cavity, the first piston and the second piston are coaxially arranged, the first piston is connected with the shifting fork shaft, the second piston is arranged on the left side in the shell, a gas port B, a gas port F and a gas port M are formed in the shell, the gas port B is communicated with the first cavity, the gas port F is communicated with the second cavity, and the gas port M is communicated with the third cavity.
2. A transmission shift actuator as set forth in claim 1 wherein the first piston has an effective active area less than the second piston effective active area.
3. A gearbox gear shift actuator as defined in claim 2 wherein a second piston right end stop step is provided between the second chamber and the third chamber, the left end of the fork shaft abutting against the second piston when the second piston abuts against the stop step.
4. The gearbox gear shifting actuating mechanism according to claim 3, comprising an actuating valve, wherein a shifting fork gear is arranged on the gear shifting fork, a rack is arranged on the actuating valve, the shifting fork gear is meshed with the rack, and the actuating valve drives the gear shifting fork to deflect; the execution valve is provided with an L air port and an R air port, when the air source enters the execution valve from the L air port to push the gear shifting fork to deflect downwards to enter a low-speed gear region, and when the air source enters the execution valve from the R air port to push the gear shifting fork to deflect upwards to enter a quick-speed gear region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221155590.1U CN217736244U (en) | 2022-05-15 | 2022-05-15 | Gear shifting actuating mechanism of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221155590.1U CN217736244U (en) | 2022-05-15 | 2022-05-15 | Gear shifting actuating mechanism of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217736244U true CN217736244U (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221155590.1U Active CN217736244U (en) | 2022-05-15 | 2022-05-15 | Gear shifting actuating mechanism of gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217736244U (en) |
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2022
- 2022-05-15 CN CN202221155590.1U patent/CN217736244U/en active Active
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