CN216692136U - Gear selecting and shifting actuating mechanism of transmission - Google Patents
Gear selecting and shifting actuating mechanism of transmission Download PDFInfo
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- CN216692136U CN216692136U CN202123030389.9U CN202123030389U CN216692136U CN 216692136 U CN216692136 U CN 216692136U CN 202123030389 U CN202123030389 U CN 202123030389U CN 216692136 U CN216692136 U CN 216692136U
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Abstract
The utility model discloses a transmission gear selecting and shifting actuating mechanism, which adopts an electric gear shifting and electric control pneumatic gear selecting transmission actuating mechanism, wherein the electric gear shifting actuating mechanism controls the rotation of a gear shifting motor through a planet gear reducer, so that the output torque of the gear shifting motor controls the gear shifting force acted on a transmission by a shifting head, the rotation angle of the shifting head is controlled, the gear shifting action can be realized by the rotation of the shifting head, the gear shifting force is easy to adjust, and the gear shifting force and the gear shifting displacement can be adjusted in real time in the gear shifting process; the electrically controlled pneumatic gear selecting mechanism controls the movement of gas in the cylinder and drives the shifting block to move transversely through the small shifting fork, so that the shifting block can move quickly and accurately at a gear selecting target position, and the control is simple, reliable and easy to realize.
Description
Technical Field
The utility model belongs to the field of automobile transmissions, and particularly relates to a gear selecting and shifting actuating mechanism of a transmission.
Background
The AMT actuating mechanism is a key core part which directly influences the AMT gear shifting quality, and currently, the AMT is applied to an electric control pneumatic type and electric control motor type gear shifting actuating mechanism in many cases. The gear engaging force of the electric control pneumatic actuating mechanism is not easy to adjust, the moving speed of the shifting block is not controllable, and large impact is easy to cause in the gear engaging process. The electric control motor type gear selecting and shifting actuating mechanism generally adopts a roller screw structure, the displacement of a shifting block in the gear selecting process needs to be realized by controlling and calibrating a gear selecting motor, and if the control and calibration are not good, the quick and accurate gear selecting operation is difficult to realize. The gear engaging motor generally converts rotation into linear movement of the sliding block through a roller lead screw structure, and then converts the rotation into rotation of the gear engaging shifting head through a lever structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provides a gear selecting and shifting actuating mechanism of a transmission, so that gear engaging displacement and gear engaging force can be controlled in real time, and gear selecting can be accurately and quickly realized.
In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:
a gear selecting and shifting actuating mechanism of a transmission comprises a gear shifting motor, a shifting fork, a shifting block, a planet wheel speed reducer and a gear selecting cylinder;
the gear shifting motor is connected with the shifting block through the planetary gear reducer, the shifting fork is mechanically matched and connected with the shifting block, and the shifting fork is connected with the gear selecting cylinder.
The utility model is further improved in that:
the gear shifting motor comprises a gear shifting motor output shaft, and the gear shifting motor output shaft is connected with the planetary gear reducer.
The planetary gear reducer comprises a planetary carrier output shaft, a planetary carrier, a sun gear and a plurality of planetary gears, the gear shifting motor output shaft is fixedly connected with the sun gear, the sun gear is meshed with the planetary gears, the planetary carrier is connected with the planetary gears through rotating shafts, and the planetary carrier is connected with the planetary carrier output shaft.
The output shaft of the planet carrier is connected with the shifting block through an internal spline.
The peripheries of the planetary gears are meshed with gear rings, and the gear rings are fixedly connected with the executing mechanism shell.
The gear shifting motor, the planet carrier output shaft and the gear selecting cylinder are arranged in the same direction.
The gear selecting cylinder comprises a cylinder piston shaft, a cylinder shell, a cylinder piston and a piston, one end of the cylinder piston shaft is connected with the shifting fork, the other end of the cylinder piston shaft is connected with the cylinder piston, and the cylinder piston and the piston are in clearance fit with the inner wall of the cylinder shell.
And air inlets at two ends of the gear selecting cylinder are respectively connected with the first electromagnetic valve and the second electromagnetic valve and are used for controlling the cylinder to move.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, by adopting the transmission executing mechanism with electric gear shifting and electric control pneumatic gear selection, the electric gear shifting executing mechanism controls the rotation of the gear shifting motor through the planet gear reducer, so that the output torque of the gear shifting motor controls the gear shifting force of the shifting head acting on the transmission, the rotation angle of the shifting head is controlled, the shifting action can be realized by the rotation of the shifting head, the gear shifting force is easy to adjust, and the gear shifting force and the gear shifting displacement can be adjusted in real time in the gear shifting process; the electrically controlled pneumatic gear selecting mechanism controls the movement of gas in the cylinder and drives the shifting block to move transversely through the small shifting fork, so that the shifting block can move quickly and accurately at a gear selecting target position.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1-a gear shifting motor; 2-a gear shifting motor output shaft; 3-an actuator housing; 4-planet carrier output shaft; 5, shifting a fork; 6-cylinder piston shaft; 7-a cylinder housing; 8-a cylinder piston; 9-a piston; 10-a shifting block; 11-a planet carrier; 12-a gear ring; 13-a plurality of planet wheels; 14-a sun gear; 15-a first solenoid valve; 16-second solenoid valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience and simplicity, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the utility model relates to an electrically controlled pneumatic gear selecting and electrically shifting transmission executing mechanism, which comprises a gear shifting motor 1, a gear shifting motor output shaft 2, an executing mechanism shell 3, a planetary reducer, a shifting fork 5, a shifting block 10, a gear selecting cylinder, a first electromagnetic valve 15 and a second electromagnetic valve 16. The planetary gear reducer comprises a planetary carrier output shaft 4, a planetary carrier 11, a gear ring 12, a plurality of planetary gears 13 and a sun gear 14, and the gear selecting cylinder comprises a cylinder piston shaft 6, a cylinder shell 7, a cylinder piston 8 and a piston 9.
The gear shifting motor output shaft 2 is connected with a planetary gear reducer, the planetary gear reducer comprises a planetary gear output shaft 4, a planetary gear 11, a gear ring 12, a plurality of planetary gears 13 and a sun gear 14, the gear shifting motor output shaft 2 is fixedly connected with the sun gear 14, the gear ring 12 is fixedly connected with the executing mechanism shell 3, and the planetary gear output shaft 4 is connected with the shifting head 10 through an inner spline. Planet carrier 11 is connected through the pivot with a plurality of planet wheel 13, because ring gear 12 and actuating mechanism casing 3 fixed connection, when gear shift motor output shaft 2 drove sun gear 14 and rotates, with a plurality of planet wheel 13 syntropy rotations of sun gear 14 meshing, planet carrier 11 also syntropy rotates with planet carrier output shaft 4, consequently slows down through the planet wheel reduction gear and increases the turn round gear shift motor output shaft 2, drives planet carrier output shaft 4 and rotates, planet carrier output shaft 4 drives the shifting block 10 through the internal spline and rotates. When the gear shifting motor rotates reversely, the shifting block 10 can also rotate reversely, and the forward rotation and the reverse rotation of the shifting block 10 are realized by controlling the forward rotation and the reverse rotation of the gear shifting motor 1. The rotation angle of the shifting block 10 can be realized by controlling the rotation of the gear shifting motor 1, and the gear engaging force of the actuating mechanism shifting block 10 acting on the transmission can be controlled by controlling the output torque of the motor. In whole shift process, the power of shifting gears and the displacement of shifting gears all can realize real-time adjustment, and the electrically controlled pneumatic type selects gearshift relatively can show and reduce the impact of shifting gears and promote the quality of shifting gears. Compared with an electric control motor type gear selecting and shifting mechanism adopting a roller lead screw, the planetary gear reducer can reduce and increase the torque of the gear shifting motor, and the gear shifting motor 1, the planetary carrier output shaft 4 and the gear selecting cylinder are arranged in the same direction, so that the mechanical structure of the whole executing mechanism is more compact.
The specific working process of electric gear shifting is as follows:
the gear shifting motor 1 rotates in the positive direction to drive the planetary gear reducer and the planetary carrier output shaft 4 to rotate in the positive direction, and the planetary carrier output shaft 4 drives the shifting block 10 to rotate in the positive direction through the internal spline.
The gear shifting motor 1 rotates reversely to drive the planetary gear reducer and the planetary carrier output shaft 4 to rotate reversely, and the planetary carrier output shaft 4 drives the shifting block 10 to rotate reversely through the internal spline.
The convex structure of the shifting block 10 is connected with the concave structure of the shifting fork 5 in a mechanical matching mode, the shifting fork 5 is fixedly connected with a cylinder piston shaft 6 and a cylinder piston 8, the cylinder piston 8 and the piston 9 are in clearance fit with the inner wall of a cylinder shell 7 and can move left and right along the wall of a cylinder pipe, and when the cylinder piston 8 moves left and right, the shifting block 10 can be driven to move axially on the planet carrier output shaft 4. The two ends of the cylinder are respectively connected with a first electromagnetic valve 15 and a second electromagnetic valve 16, the air is exhausted from the left end of the right end of the cylinder, air enters from the left end of the right end of the cylinder, the cylinder piston 8 is pushed to the rightmost side of the cylinder by pressure air under the mechanical limit of the cylinder, and the cylinder piston shaft 6 drives the shifting block 10 to move to the gear selecting position on the rightmost side. The right end of the cylinder is used for air intake and air exhaust, the cylinder piston 8 is pushed to the leftmost side of the cylinder by pressure gas under the mechanical limit of the cylinder, and the cylinder piston shaft 6 drives the shifting block 10 to move to the leftmost gear selecting position. The left end and the right end of the cylinder are simultaneously charged with air, the piston 9 moves to the rightmost end under the mechanical limit of the cylinder shell 7, and the cylinder piston 8 moves to the middle gear selecting position under the mechanical limit of the piston 9. The shifting block 10 is driven by the movement of the cylinder piston shaft 6 to transversely move on the planet carrier output shaft 4, so that the shifting block can quickly and accurately move at three gear selection target positions. Compared with a roller screw structure of a gear selection motor, the electric control pneumatic gear selection can quickly and accurately realize the gear selection operation of three positions, the gear selection motor does not need to be controlled and calibrated, and the control is simple, reliable and easy to realize.
The specific working process of pneumatic gear selection is as follows:
when the gear needs to be selected to the right side, the air is exhausted from the right end of the air cylinder, air enters from the left end of the air cylinder, the air cylinder piston 8 is pushed to the rightmost side of the air cylinder by pressure air under the mechanical limit of the air cylinder, and the air cylinder piston shaft 6 drives the shifting head 10 to move to the gear selecting position on the rightmost side.
When the gear needs to be selected to the left side, the right end of the cylinder enters air and the left end exhausts air, the cylinder piston 8 is pushed to the leftmost side of the cylinder by pressure gas under the mechanical limit of the cylinder, and the cylinder piston shaft 6 drives the shifting block 10 to move to the gear selecting position of the leftmost side.
When the gear needs to be selected to the middle position, air enters from the left end and the right end of the air cylinder simultaneously, the piston 9 moves to the rightmost side under the mechanical limit of the air cylinder shell 7, and the air cylinder piston 8 moves to the middle gear selecting position under the mechanical limit of the piston 9.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A transmission gear selecting and shifting actuating mechanism is characterized by comprising a gear shifting motor (1), a shifting fork (5), a shifting head (10), a planet gear reducer and a gear selecting cylinder;
the gear shifting motor (1) is connected with the shifting block (10) through the planet wheel speed reducer, the shifting fork (5) is mechanically matched and connected with the shifting block (10), and the shifting fork (5) is connected with the gear selecting cylinder.
2. A transmission gear shift actuator as claimed in claim 1, characterized in that the gear shift motor (1) comprises a gear shift motor output shaft (2), and the gear shift motor output shaft (2) is connected to a planetary gear reducer.
3. A transmission gear-selecting and shifting actuator according to claim 2, wherein the planetary reducer comprises a planetary output shaft (4), a planetary carrier (11), a sun gear and a plurality of planetary gears (13), the output shaft (2) of the gear-shifting motor is fixedly connected with the sun gear (14), the sun gear (14) is meshed with the plurality of planetary gears (13), the planetary carrier (11) is connected with the plurality of planetary gears (13) through a rotating shaft, and the planetary carrier (11) is connected with the planetary output shaft (4).
4. A transmission gear selection actuator as claimed in claim 3, characterised in that the planet carrier output shaft (4) is connected to the shift head (10) by an internal spline.
5. A transmission gear selection actuator as claimed in claim 3, characterized in that the periphery of the planet wheels (13) is engaged with a ring gear (12), which ring gear (12) is fixedly connected to the actuator housing (3).
6. A transmission gear selection actuator as claimed in claim 3, characterised in that the gear shifting motor (1), the planet carrier output shaft (4) and the gear selection cylinder are arranged in the same direction.
7. The gear selecting and shifting actuating mechanism of the transmission as claimed in claim 1, wherein the gear selecting cylinder comprises a cylinder piston shaft (6), a cylinder housing (7), a cylinder piston (8) and a piston (9), one end of the cylinder piston shaft (6) is connected with the shifting fork (5), the other end of the cylinder piston shaft is connected with the cylinder piston (8), and the cylinder piston (8) and the piston (9) are in clearance fit with the inner wall of the cylinder housing (7).
8. A transmission gear selecting and shifting actuator as claimed in claim 1, characterized in that the inlet ports at both ends of the gear selecting cylinder are respectively connected with a first solenoid valve (15) and a second solenoid valve (16) for controlling the cylinder movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123030389.9U CN216692136U (en) | 2021-12-03 | 2021-12-03 | Gear selecting and shifting actuating mechanism of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123030389.9U CN216692136U (en) | 2021-12-03 | 2021-12-03 | Gear selecting and shifting actuating mechanism of transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216692136U true CN216692136U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123030389.9U Active CN216692136U (en) | 2021-12-03 | 2021-12-03 | Gear selecting and shifting actuating mechanism of transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216692136U (en) |
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2021
- 2021-12-03 CN CN202123030389.9U patent/CN216692136U/en active Active
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