CN214093006U - Gear selecting and shifting mechanism of twelve-gear heavy type automatic transmission - Google Patents
Gear selecting and shifting mechanism of twelve-gear heavy type automatic transmission Download PDFInfo
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- CN214093006U CN214093006U CN202023288967.4U CN202023288967U CN214093006U CN 214093006 U CN214093006 U CN 214093006U CN 202023288967 U CN202023288967 U CN 202023288967U CN 214093006 U CN214093006 U CN 214093006U
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Abstract
The utility model relates to a derailleur gearshift technical field specifically discloses a twelve-gear heavy automatic gearbox selects gearshift, including main tank, auxiliary tank and selection gearshift structure, select the gearshift structural connection between main tank and auxiliary tank, be equipped with the cylinder in the auxiliary tank, the piston rod of cylinder is connected with the auxiliary tank axle, and the auxiliary tank axle is connected with the selection gearshift structural connection, and the epaxial auxiliary tank shift fork that is equipped with of auxiliary tank is equipped with linear displacement sensor in the pneumatic piston department of cylinder, is equipped with three solenoid valve on the cylinder, three solenoid valve and linear displacement sensor electric signal connection. This patent has satisfied the requirement of 12 grades of heavy automatic gearbox to selecting gearshift.
Description
Technical Field
The utility model relates to a derailleur gearshift technical field, in particular to twelve grades of heavy automatic gearbox select gearshift.
Background
The transmission gear selecting and shifting mechanism is used for operating a mechanism for realizing gear shifting by matching transmission gears, and under the operation of a driver, the transmission gear shifting mechanism can be quickly, accurately and reliably removed, and can be engaged in a certain gear or can be withdrawn to a neutral position; at present, based on the implementation of the national sixth-stage motor vehicle pollutant emission standard, a heavy commercial vehicle tail gas system is generally additionally provided with a DPF particle capture device, so that the early occurrence of DPF poisoning phenomena is avoided to the greatest extent, the driving state of dragging and sliding of a vehicle is required to be reduced, and fuel is fully combusted as much as possible.
Compared with a traditional MT transmission, the AMT can achieve more accurate gear shifting, and can ensure that the engine operates at a middle and high-efficiency interval by exchanging power data with an engine ECU (electronic control unit) in real time to the greatest extent. In Europe, the popularity of the heavy truck AMT reaches 70%, and the proportion of the tractor AMT exceeds 95%. The AMT service environment in China tends to be mature, the heavy truck main force.
Based on this, on the basis of the 12-gear heavy mechanical transmission jointly developed by the department of my and the british SMT, a novel commercial 12-gear AMT transmission is developed to meet the requirements of key parts of the whole vehicle under the state of implementation of the national sixth-stage motor vehicle pollutant emission standard, and the application is a gear selecting and shifting mechanism in the novel commercial 12-gear AMT transmission.
SUMMERY OF THE UTILITY MODEL
The utility model provides a twelve-gear heavy automatic transmission selects gearshift to satisfy the requirement of 12-gear heavy automatic mechanical transmission to selecting gearshift.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides a twelve grades of heavy automatic gearbox selects gearshift, includes main tank, auxiliary tank and selects the gearshift structure, select the gearshift structural connection between main tank and auxiliary tank, be equipped with the cylinder in the auxiliary tank, the piston rod of cylinder is connected with the auxiliary tank axle, and the auxiliary tank axle is connected with selects the gearshift structural connection, and the epaxial auxiliary tank shift fork that is equipped with of auxiliary tank is equipped with in the pneumatic piston department of cylinder, is equipped with two three way solenoid valves on the cylinder, two three way solenoid valves and linear displacement sensor signal of telecommunication connection.
The technical principle and the effect of the technical scheme are as follows:
the auxiliary box carries out pneumatic gear shifting through the cylinder that sets up in this scheme, and power source is convenient, and simple structure satisfies the required big requirement of shifting the power of auxiliary box simultaneously again, detects pneumatic piston's position in the auxiliary box through a linear displacement sensor's analog signal in this scheme in addition, judges that the auxiliary box is in high-grade position or low gear, controls high, low fender through a two tee bend solenoid valve and admits air and the gear pressure to the requirement of 12 heavy automatic gearbox to selecting gearshift has been satisfied.
Further, the gear selecting and shifting actuator is an electric gear selecting and shifting actuator.
Has the advantages that: the electric gear shifting actuator is selected for use in the scheme, so that the oil and water separation problem is avoided compared with pneumatic gear shifting, the service life of the actuator is longer, the hydraulic gear shifting is low in cost, and the small-scale operation is stable under the influence of the environment.
Further, select the executor of shifting to include the guide rail and select the shifting block of shifting, the guide rail is the cylinder, has a plurality of spouts along its circumference equipartition on the outer wall of cylinder, selects the shifting block of shifting to include connecting cylinder and driving lever, is equipped with a plurality of sand grips with spout complex in the connecting cylinder.
Has the advantages that: the sliding between the gear selecting and shifting head and the guide rail is more stable due to the arrangement.
Furthermore, the gear selecting and shifting structure comprises four shifting fork shafts and four gear shifting forks, a gear shifting guide block is fixed outside one side, close to the main box, of each shifting fork shaft, a groove is formed in the top of each gear shifting guide block, and the shifting rod is located in each groove.
Has the advantages that: the shifting rod is moved to be positioned in grooves of different shifting guide blocks, so that shifting is completed.
Furthermore, one side of the shifting fork shaft, which is far away from the main box, is provided with a self-locking structure.
Has the advantages that: the arrangement is to avoid that when the shifting lever is simultaneously positioned in the two grooves, two gears are simultaneously selected, and the self-locking of each gear is realized by the self-locking structure fixed on the transmission shell through each shifting fork shaft.
Furthermore, the self-locking structure comprises a rolling self-locking pin, a self-locking spring and a connecting block, wherein one end of the self-locking pin is provided with a circular arc-shaped cavity, the other end of the self-locking pin is provided with a cylindrical cavity, a locking bead is arranged in the circular arc-shaped cavity, a plurality of steel balls are arranged between the locking bead and the circular arc-shaped cavity, the self-locking spring is fixed between the cylindrical cavity and the connecting block, and each shifting fork shaft is further provided with a slotted hole matched with the locking bead.
Has the advantages that: through the cooperation of lock pearl and slotted hole, through the cooperation of self-locking pin and auto-lock spring, realize shifting the auto-lock of in-process auto-lock structure to the shifting shaft.
Furthermore, a main box interlocking plate and an auxiliary box interlocking plate are arranged between the auxiliary box shaft and the shifting fork shaft.
Has the advantages that: the arrangement ensures that the auxiliary box of the main box shifts gears when the main box is in a neutral gear, and the gear shifting of the main box and the gear shifting of the auxiliary box are not interfered with each other, so that the main box and the auxiliary box are interlocked relatively.
Drawings
FIG. 1 is a three-dimensional schematic view of an embodiment of a gearshift mechanism of a twelve-speed heavy automatic transmission according to the present invention;
FIG. 2 is a three-dimensional schematic view of a guide rail, a gear selecting and shifting head and a gear shifting guide block in an embodiment of a gear selecting and shifting mechanism of a twelve-gear heavy type automatic transmission according to the present invention;
fig. 3 is a cross-sectional view of the self-locking structure in the embodiment of the gear selecting and shifting mechanism of the twelve-gear heavy automatic transmission of the present invention.
Reference numerals in the drawings of the specification include: the auxiliary box comprises an auxiliary box 1, a guide rail 2, a gear selecting and shifting head 3, a connecting cylinder 31, a shifting rod 32, a shifting fork shaft 4, a gear shifting fork 5, a gear shifting guide block 6, a self-locking structure 7, a self-locking pin 71, a self-locking spring 72, a connecting block 73, a locking ball 74, an auxiliary box shaft 8, a main and auxiliary box interlocking plate 9 and an auxiliary box shifting fork 10.
Detailed Description
The following is further detailed by way of specific embodiments:
example (b):
substantially as shown in figure 1: the utility model provides a twelve shelves heavy automatic gearbox selects gearshift, including main tank (not shown in the figure), case 1 and select the structure of shifting, wherein be equipped with in the main tank and select the executor of shifting, select the executor of shifting to include guide rail 2 and select the shifting block 3 of shifting, wherein guide rail 2 is the cylinder, it has a plurality of spouts along its circumference equipartition on the outer wall of cylinder, select the shifting block 3 of shifting to include integrated into one piece's connecting cylinder 31 and driving lever 32, wherein be equipped with in the connecting cylinder 31 a plurality of with spout complex sand grip, select the executor of shifting to be electronic in this embodiment and select the executor of shifting.
The gear selecting and shifting structure comprises four shifting fork shafts 4 and four gear shifting forks 5, a gear shifting guide block 6 is fixed outside one side of each shifting fork shaft 4 close to the main box, as shown in a combined figure 2, a groove is formed at the top of each gear shifting guide block 6, a shifting rod 32 is positioned in the groove, each side of the fork shaft 4, which is far away from the main box, is provided with a self-locking structure 7, in the embodiment, the self-locking structure 7 is shown in fig. 3, and comprises a rolling self-locking pin 71, a self-locking spring 72 and a connecting block 73, wherein, one end of the self-locking pin 71 is provided with a circular arc-shaped cavity, the other end is provided with a cylindrical cavity, a locking bead 74 is arranged in the circular arc-shaped cavity, the position of the locking bead 74 close to the bottom is exposed out of the circular arc-shaped cavity, a plurality of fine steel balls are arranged between the locking bead 74 and the circular arc-shaped cavity, the self-locking spring 72 is fixed between the cylindrical cavity and the connecting block 73, when the transmission is mounted, the connecting block 73 is fixed on the casing of the transmission, and each fork shaft 4 is also provided with a slotted hole matched with the locking ball 74.
The air cylinder is arranged in the auxiliary box 1, a piston rod of the air cylinder is connected with an auxiliary box shaft 8, a main and auxiliary box interlocking plate 9 is arranged between the auxiliary box shaft 8 and four shifting fork shafts 4, an auxiliary box shifting fork 10 is fixed on the auxiliary box shaft 8, a self-locking structure 7 is also arranged at a position, close to the main and auxiliary box interlocking plate 9, of the auxiliary box shaft 8, a linear displacement sensor is arranged at a pneumatic piston of the air cylinder, the position of a pneumatic piston of the auxiliary box 1 is detected through an analog quantity signal of the linear displacement sensor, whether the auxiliary box 1 is in a high gear or a low gear is judged, in addition, a two-position three-way electromagnetic valve is arranged on the air cylinder, and the two-position three-way electromagnetic valve is in electric signal connection with the linear displacement sensor so as to control air inlet and pressure discharge of the high gear and the low gear of the air cylinder.
In the embodiment, the gear shifting is realized by linearly moving the gear shifting head 3 in the gear selecting and shifting actuator, and in order to prevent the shift lever 32 from being simultaneously positioned in two grooves in the gear selecting process, the problem of simultaneously selecting two gears is solved, and the self-locking of each gear is realized by the self-locking structure 7 fixed on the transmission shell through each shift fork shaft 4.
In addition, in the embodiment, the position of the pneumatic piston in the auxiliary box 1 is detected through an analog quantity signal of a linear displacement sensor, whether the auxiliary box 1 is in a high gear or a low gear is judged, and high-gear and low-gear air inlet and pressure exhaust are controlled through a two-position three-way electromagnetic valve. The interlocking plate is used between the main box 1 and the auxiliary box 1 to ensure that the auxiliary box 1 is shifted to realize the interlocking of the main box and the auxiliary box 1 when the main box is in a neutral gear.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. A twelve-gear heavy automatic transmission gear selecting and shifting mechanism is characterized in that: including main tank, auxiliary tank and select the structure of shifting, select the structure of shifting to connect between main tank and auxiliary tank, be equipped with the cylinder in the auxiliary tank, the piston rod of cylinder is connected with auxiliary tank axle, and auxiliary tank axle is connected with the structure of selecting to shift, and the epaxial auxiliary tank shift fork that is equipped with of auxiliary tank is equipped with linear displacement sensor in the pneumatic piston department of cylinder, is equipped with two three-way solenoid valve on the cylinder, two three-way solenoid valve and linear displacement sensor signal of telecommunication are connected.
2. The twelve speed heavy duty automatic transmission gear selecting and shifting mechanism according to claim 1, wherein: the gear selecting and shifting actuator is an electric gear selecting and shifting actuator.
3. The twelve speed heavy duty automatic transmission gear selecting and shifting mechanism according to claim 1, wherein: the gear selecting and shifting actuator comprises a guide rail and a gear selecting and shifting head, the guide rail is a cylinder, a plurality of sliding grooves are uniformly distributed on the outer wall of the cylinder along the circumferential direction of the cylinder, the gear selecting and shifting head comprises a connecting cylinder and a shifting rod, and a plurality of convex strips matched with the sliding grooves are arranged in the connecting cylinder.
4. The twelve speed heavy duty automatic transmission gear selecting and shifting mechanism according to claim 3, wherein: the gear selecting and shifting structure comprises four shifting fork shafts and four gear shifting forks, a gear shifting guide block is fixed outside one side, close to the main box, of each shifting fork shaft, a groove is formed in the top of each gear shifting guide block, and the shifting rod is located in the groove.
5. The twelve speed heavy duty automatic transmission gear selecting and shifting mechanism according to claim 4, wherein: and a self-locking structure is arranged on one side of the shifting fork shaft, which is far away from the main box.
6. The twelve speed heavy duty automatic transmission gear selecting and shifting mechanism according to claim 5, wherein: the self-locking structure comprises a rolling self-locking pin, a self-locking spring and a connecting block, wherein one end of the self-locking pin is provided with a circular arc-shaped cavity, the other end of the self-locking pin is provided with a cylindrical cavity, a locking bead is arranged in the circular arc-shaped cavity, a plurality of steel balls are arranged between the locking bead and the circular arc-shaped cavity, the self-locking spring is fixed between the cylindrical cavity and the connecting block, and each shifting fork shaft is further provided with a groove hole matched with the locking bead.
7. The twelve speed heavy duty automatic transmission gear selecting and shifting mechanism according to claim 6, wherein: and a main box interlocking plate and an auxiliary box interlocking plate are arranged between the auxiliary box shaft and the shifting fork shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023288967.4U CN214093006U (en) | 2020-12-30 | 2020-12-30 | Gear selecting and shifting mechanism of twelve-gear heavy type automatic transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023288967.4U CN214093006U (en) | 2020-12-30 | 2020-12-30 | Gear selecting and shifting mechanism of twelve-gear heavy type automatic transmission |
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| CN214093006U true CN214093006U (en) | 2021-08-31 |
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| CN202023288967.4U Active CN214093006U (en) | 2020-12-30 | 2020-12-30 | Gear selecting and shifting mechanism of twelve-gear heavy type automatic transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217625A (en) * | 2021-05-31 | 2021-08-06 | 东风商用车有限公司 | Shifting fork structural part, mechanical gear locking structure and gearbox |
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2020
- 2020-12-30 CN CN202023288967.4U patent/CN214093006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217625A (en) * | 2021-05-31 | 2021-08-06 | 东风商用车有限公司 | Shifting fork structural part, mechanical gear locking structure and gearbox |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220324 Address after: 401420 building 103, No. 7, Xichi Avenue, Gunan street, Qijiang District, Chongqing Patentee after: Chongqing Qichi gear Research Institute Co.,Ltd. Address before: 401420 NO.666, Jiefang Road, Qiaohe street, Qinjiang District, Chongqing Patentee before: QIJIANG GEAR TRANSMISSION Co.,Ltd. |
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| TR01 | Transfer of patent right |