CN103836174A - Automatic transmission and gear selection and shift actuating mechanism thereof - Google Patents
Automatic transmission and gear selection and shift actuating mechanism thereof Download PDFInfo
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- CN103836174A CN103836174A CN201310674336.1A CN201310674336A CN103836174A CN 103836174 A CN103836174 A CN 103836174A CN 201310674336 A CN201310674336 A CN 201310674336A CN 103836174 A CN103836174 A CN 103836174A
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- gearshift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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Abstract
The invention discloses an automatic transmission and a gear selection and shift actuating mechanism of the automatic transmission. The gear selection and shift actuating mechanism comprises a gear shift chamber, a gear selection mechanism and a gear shift mechanism, wherein a gear selection driving block, a gear shift driving block and a gear shift finger are arranged in the gear shift chamber, the gear selection mechanism drives the gear selection driving block to drive the gear shift finger to move left and right to select a gear, and the gear shift mechanism drives the gear shift driving block to drive the gear shift finger to move up and down to select a gear. A gear selection motor is used as a power source of the gear selection mechanism, and a pneumatic device or a linear motor is used as a power source of the gear shift mechanism. Thus, when the pneumatic device is used as the power source of the gear shift mechanism, the response speed is high, and gear shift can be performed fast. When the linear motor is used as the power source of the gear shift mechanism, the gear shift finger can be directly driven to make linear motion. An additional mechanical device for converting rotating motion of a motor rotor into linear motion can be cancelled, the mechanical structure is simplified, and the response speed is increased. Moreover, because the gear selection motor is used as the power source of the gear selection mechanism, speed regulation can be controlled, and the gear selection time can be controlled.
Description
Technical field
The present invention relates to speed changer technical field, particularly relate to a kind of automatic transmission and shift-selecting and changing actuating mechanism thereof.
Background technique
Automatic mechanical transmission (AMT, Automated Mechanical Transmission) improves on traditional hand gear type speed changer basis, and it is to have merged automatically and the mechanical-electrical-hydraulic integration automatic transmission of manual both advantages.
For improving the performance of AMT vehicle, improving its shifting operation control is an important aspect.At present, according to the difference of actuator's power source, the shift-selecting and changing actuating mechanism of AMT can be divided into ecp, electrically controlled and hydraulically and electricity powered three types.
Shift-selecting and changing actuating mechanism comprises gearshift chamber, gear selection mechanism and gearshift; Wherein, described gear selection mechanism drives the indoor block selecting shifting block of described gearshift to drive gearshift to refer to that transverse shifting is with block selecting, and described gearshift drives the indoor gearshift shifting block of described gearshift to drive gearshift to refer to vertically move to shift gears.
For electric controlling and engine driving shift-selecting and changing actuating mechanism, the power source of its gear selection mechanism and gearshift is respectively block selecting motor and shift motor, the output of current motor used is rotatablely moving of rotor, and, the transverse shifting that refers to of gearshift or vertically move and be straight line motion, thereby extra mechanical device need to be installed on motor shaft, as ball screw, turbine and worm etc., to change rotatablely moving of rotor into straight line motion, in order to realize, on horizontal and vertical both direction, promoting shifts gears refers to do straight line motion, needs the above-mentioned mechanical device of two covers.Therefore, make the complicated in mechanical structure of shift-selecting and changing actuating mechanism, not only reduced reliability, also make the speed of response of actuator slack-off, sensitivity variation, thus controllability is lower; In addition, the increase of mechanical structure also makes the volume of whole actuator increase, and brings difficulty to its layout.
For electric-controlled pneumatic type shift-selecting and changing actuating mechanism, the power source of its gear selection mechanism and gearshift is Pneumatic actuator, for gear selection mechanism, because Pneumatic actuator only can be realized the fixing block selecting time, cannot control the block selecting time, and for the more mechanism in block selecting position, as the Pneumatic actuator complex structure of block selecting power source, volume is large, should not arrange.
In view of this, how improving shift-selecting and changing actuating mechanism, improve its controllability, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of shift-selecting and changing actuating mechanism, the controllability of this shift-selecting and changing actuating mechanism is high.Another object of the present invention is to provide a kind of automatic transmission that comprises above-mentioned shift-selecting and changing actuating mechanism.
For solving the problems of the technologies described above, the invention provides a kind of shift-selecting and changing actuating mechanism, comprising:
Gearshift chamber, is inside provided with block selecting shifting block, gearshift shifting block and gearshift and refers to;
Gear selection mechanism, drives described block selecting shifting block to drive described gearshift to refer to move left and right with block selecting;
Gearshift, drives described gearshift shifting block to drive described gearshift to refer to move up and down to shift gears;
The power source of described gear selection mechanism is block selecting motor, and the power source of described gearshift is Pneumatic actuator or linear electric motor.
So, Pneumatic actuator is as the power source of gearshift, its fast response time, can realize crash change of speed, compared with electric-controlled pneumatic type shift-selecting and changing actuating mechanism, the power source of gear selection mechanism is block selecting motor, can carry out speed regulating control to block selecting motor, thereby realize the controllability to the block selecting time, and can realize the block selecting location of different block selectings position by the controller that block selecting motor is controlled in adjusting, realize corresponding block selecting requirement to mate different gear boxes, in addition, block selecting motor is simple in structure with respect to Pneumatic actuator, is easy to arrange;
Linear electric motor are as the power source of gearshift, can directly drive gearshift to refer to do straight line motion, can cancel and in background technique, rotatablely moving of rotor is converted into straight-line extra mechanical device, the mechanical structure of simplifying shift-selecting and changing actuating mechanism, improves its speed of response, thereby improves controllability, and, due to the simplification of shift-selecting and changing actuating mechanism, its volume reduces, and is easy to arrange.
Preferably, described Pneumatic actuator comprises shifting cylinder and the range piston bar of being located at described shifting cylinder inner chamber; Described range piston bar drives described gearshift shifting block to move up and down under the driving of pressurized gas.
Preferably, described range piston bar comprises first piston bar and the second piston rod; The work area of described first piston bar is less than the work area of described the second piston rod;
The air chamber of described shifting cylinder is divided into upper gas chamber, middle air chamber and lower chamber by described first piston bar and described the second piston rod, each air chamber is equipped with gas port, and, between the gas port of described upper gas chamber, described lower chamber and high-pressure air source, be equipped with selector valve, to control air inlet or the exhaust of described upper gas chamber, described lower chamber, the gas port of described middle air chamber is communicated with atmosphere;
In described shifting cylinder, be also provided with bounding means, for limiting described the second piston rod mobile position upwards.
Preferably, described middle air chamber is ladder setting, has the step surface towards the piston end of described the second piston rod.
Preferably, the gas port of described middle air chamber and described upper gas chamber, and or, the relief opening of the selector valve of described lower chamber is communicated with.
Preferably, between described block selecting motor and described block selecting shifting block, connect by block selecting pull bar.
Preferably, described block selecting motor is linear electric motor.
The present invention also provides a kind of automatic transmission, comprise planetary gears and shift-selecting and changing actuating mechanism, described shift-selecting and changing actuating mechanism is for changing the velocity ratio of described planetary gears, and described shift-selecting and changing actuating mechanism is the shift-selecting and changing actuating mechanism described in above-mentioned any one.
Because above-mentioned shift-selecting and changing actuating mechanism has above-mentioned technique effect, also there is corresponding technique effect so there is the automatic transmission of this shift-selecting and changing actuating mechanism, repeat no more here.
Accompanying drawing explanation
Fig. 1 is shift-selecting and changing actuating mechanism the first embodiment's provided by the present invention structural representation;
Fig. 2 is the generalized section of shift-selecting and changing actuating mechanism shown in Fig. 1;
Fig. 3 is shift-selecting and changing actuating mechanism the second embodiment's provided by the present invention structural representation;
Fig. 4 is the principle schematic of shift-selecting and changing actuating mechanism shown in Fig. 3.
In Fig. 1-4:
Gearshift chamber 10, block selecting shifting block 11, gearshift shifting block 12, gearshift refers to 13;
Shift motor 31 ', Pneumatic actuator 31, shifting cylinder 311, upper gas port 311a, middle gas port 311b, lower gas port 311c, range piston bar 312, first piston bar 312-1, the second piston rod 312-2, drive range sensor 32.
Embodiment
Core of the present invention is to provide a kind of shift-selecting and changing actuating mechanism, and the controllability of this shift-selecting and changing actuating mechanism is high.Another core of the present invention is to provide a kind of automatic transmission that comprises above-mentioned shift-selecting and changing actuating mechanism.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Here it should be noted that, the noun of locality related in literary composition is left and right, upper and lower is that the correlation in figure and between component defines with component in Fig. 1-4, just in order to explain the clear and convenient of technological scheme; Should be appreciated that the use of the described noun of locality should not limit the scope of the application's request protection.
Please refer to Fig. 1-2, Fig. 1 is shift-selecting and changing actuating mechanism the first embodiment's provided by the present invention structural representation; Fig. 2 is the generalized section of shift-selecting and changing actuating mechanism shown in Fig. 1.
In one embodiment, described shift-selecting and changing actuating mechanism comprises:
Gearshift chamber 10, is inside provided with block selecting shifting block 11, gearshift shifting block 12 and gearshift and refers to 13;
Gear selection mechanism, drives block selecting shifting block 11 to drive gearshift to refer to that 13 move left and right with block selecting;
Gearshift, drives gearshift shifting block 12 to drive gearshift to refer to that 13 move up and down to shift gears;
Wherein, the power source of described gear selection mechanism is block selecting motor 21, and the power source of described gearshift is Pneumatic actuator 31.
So design, gearshift is controlled by Pneumatic actuator 31, and its fast response time, can realize crash change of speed; Compared with electric-controlled pneumatic type shift-selecting and changing actuating mechanism, the power source of gear selection mechanism is block selecting motor 21, can carry out speed regulating control to block selecting motor 21, thereby realize the controllability to the block selecting time, compared to Pneumatic actuator, block selecting motor 21 can be realized the accurate control to block selecting position, and operates steadily, without impacting; Separately, by regulating TCU(gearbox control) control program can realize the block selecting location of the different number block selectings positions such as two positions, three positions or four positions, realize corresponding block selecting requirement to mate different gear boxes, while having avoided block selecting position number different, redesign Pneumatic actuator; In addition, block selecting motor 21 is with respect to Pneumatic actuator, simple in structure, is easy to arrange.
Described gear selection mechanism also comprises block selecting position transducer 22 and block selecting pull bar 23; Between block selecting motor 21 and block selecting shifting block 11, connect by block selecting pull bar 23, mechanical structure is simple, and the level of integration of parts is high; Under the driving of block selecting motor 21, block selecting pull bar 23 drives block selecting shifting block 11 to move left and right, thereby drives the gearshift that is positioned at block selecting shifting block 11 to refer to that 13 move left and right, and realizes block selecting; Block selecting position transducer 22 is for monitoring stroke and the position of block selecting pull bar 23, and by result feedback to TCU.
Described Pneumatic actuator 31 comprises shifting cylinder 311 and is located at the range piston bar 312 of shifting cylinder 311 inner chambers; Wherein, range piston bar 312 is connected with gearshift shifting block 12, can drive gearshift shifting block 12 to move up and down under the driving of pressurized gas, thereby drives the gearshift that is positioned at gearshift shifting block 12 to refer to that 13 move up and down, and realizes gearshift; Described gearshift also comprises drive range sensor 32, for monitoring stroke and the position of range piston bar 312, and by result feedback to TCU.
Block selecting shifting block 11 in gearshift chamber 10 and gearshift shifting block 12 compress by briquetting, and both can be movable relatively, on block selecting shifting block 11, offer and can hold gearshift and refer to 13 through hole, gearshift refers to that 13 are provided with slide block, be flush-mounted in the slideway of gearshift shifting block 12, setting between three drives gearshift to refer to that 13 when moving left and right block selecting to guarantee block selecting shifting block 11, and gearshift refers to that 13 can move up and down gearshift and are as the criterion.
Introduce the concrete structure of Pneumatic actuator 31 below, take three gears of same block selecting position as example.
As shown in Figure 2, range piston bar 312 comprises first piston bar 312-1 and the second piston rod 312-2, and the work area of first piston bar 312-1 is less than the work area of the second piston rod 312-2.Here, first piston bar 312-1 and the second piston rod 312-2 can be movable relatively.
The air chamber of shifting cylinder 311 is divided into upper gas chamber, middle air chamber and lower chamber by first piston bar 312-1 and the second piston rod 312-2, each air chamber is equipped with gas port, and between the lower gas port 311c of the upper gas port 311a of described upper gas chamber, described lower chamber and high-pressure air source, be equipped with selector valve, this selector valve can be controlled air inlet or the exhaust of described upper gas chamber, described lower chamber; For ease of accurate control, described selector valve is optional with solenoid directional control valve, and the break-make of solenoid directional control valve can be controlled by TCU; The middle gas port 311b of described middle air chamber is communicated with atmosphere.
Here it is pointed out that because first piston bar 312-1 and the second piston rod 312-2 can move up and down in shifting cylinder 311, and can be movable relatively between the two, so, be variable by the volume of the upper gas chamber of its separation, middle air chamber and lower chamber.
In shifting cylinder 311, be also provided with bounding means, for limiting the second piston rod 312-2 mobile position upwards.
Described bounding means can have multiple concrete structure, and wherein comparatively easy the and reliable mode of one is: described middle air chamber is ladder setting, and it has the step surface towards the piston end of the second piston rod 312-2; In the time that the second piston rod 312-2 is moved upward to its piston end and this step surface and offsets, limited, on can not continuing, move.
The working procedure of this shift-selecting and changing actuating mechanism is as follows:
TCU receives after shifting order, produce corresponding output signal according to internal control strategy, drive block selecting motor 21, block selecting motor 21 drives block selecting pull bar 23, and the block selecting shifting block 11 being connected with block selecting pull bar 23 left or move right, therebetween, monitor stroke and the position of block selecting pull bar 23 by block selecting position transducer 22, and by result feedback to TCU, in the time that TCU monitors block selecting pull bar 23 and arrives predetermined stroke position, send instruction and stop the action of block selecting motor 21, to guarantee that block selecting shifting block 11 drives gearshift to refer to that 13 are positioned at the block selecting position of needs.
TCU receives after the instruction that block selecting moved, and TCU realizes the breathing action of three air chambers by controlling the break-make of solenoid directional control valve, realize gearshift.
Particularly, while conversion, control solenoid directional control valve and make gas port 311a and lower gas port 311c all in air-suction state by low gear to neutral, obviously, now middle gas port 311b is in exhaust condition; Although upper gas chamber is identical with the suction pressure in lower chamber, but because the work area of the second piston rod 312-2 is greater than the work area of first piston bar 311-1, so, under the effect of pressurized gas, reversing piston bar 312(comprises first piston bar 312-1 and the second piston rod 312-2) on move, drive gearshift to move on shifting block 12, thereby drive gearshift to refer to that 13 complete by low gear and move to the gearshift of neutral.
While conversion to high gear by neutral, controlling solenoid directional control valve makes lower gas port 311c in air-suction state, upper gas port 311a is in exhaust condition, now, due to the effect of bounding means, the second piston rod 312-2 cannot on move, under the effect of pressurized gas, on first piston bar 312-1, move, drive gearshift to move on shifting block 12, thereby drive gearshift to refer to that 13 complete by neutral and move to the gearshift of high gear.In this process, owing to moving on first piston bar 312-1, the second piston rod 312-2 holding position is constant, so the volume of middle air chamber between the two reduces, causing air pressure in air chamber lower than barometric pressure, is complemental air pressure reduction, and middle gas port 311b is in air-suction state.
While conversion to neutral by high gear, control solenoid directional control valve and make gas port 311a and lower gas port 311c all in air-suction state, obviously, now middle gas port 311b is in exhaust condition; Due to the effect of bounding means, the second piston rod 312-2 cannot move, under the effect of pressurized gas, first piston bar 312-1 moves down, until contact with the second piston rod 312-2, in this process, drive gearshift shifting block 12 to move down, thereby drive gearshift to refer to that 13 complete by high gear and move to the gearshift of neutral; Now, because the effect first piston bar 312-1 of working surface product moment stops moving downward, under the effect of bounding means, keep motionless together with the second piston rod 312-2.
While conversion to low gear by neutral, controlling solenoid directional control valve makes gas port 311a in air-suction state, lower gas port 311c is in exhaust condition, first piston bar 312-1 and the second piston rod 312-2 move down simultaneously, drive gearshift shifting block 12 to move down, thereby drive gearshift to refer to that 13 complete by neutral and move to the gearshift of low gear.In this process, because first piston bar 312-1 and the second piston rod 312-2 move simultaneously, the volume-variation of middle air chamber depends on the travelling speed of two-piston bar, if middle air chamber exists draught head, can compensate by the air inlet of middle gas port 311b or exhaust.
In above-mentioned shift process; drive range sensor 32 is monitored stroke and the position of first piston bar 312-1, the second piston rod 312-2; and by result feedback to TCU, TCU controls the break-make of solenoid directional control valve according to feedback result and actual required gear, thus guarantee gearshift accuracy.
Above-mentioned three gears take same block selecting position are illustrated as example, other situations such as two gears of same block selecting position in reality, and similar with above-mentioned principle, those skilled in the art can, with reference to design, repeat no more here.
Further, middle gas port 311b and the described upper gas chamber of described middle air chamber, and or, the relief opening of the selector valve of described lower chamber is communicated with.In order to reduce noise, exhaust position at each gas port is also provided with silencer, the exhaust of going up gas port 311a, middle gas port 311b and lower gas port 311c all needs after silencer carries out noise reduction, enter again atmosphere, as above arrange, middle gas port 311b and upper gas port 311a, and or, lower gas port 311c can share a silencer, reduces costs and be convenient to arrange.In addition, when central air chamber needs air inlet compensation due to draught head, can realize fast by the pressurized gas at upper gas port 311a or lower gas port 311c place.
Further, described block selecting motor 21 is linear electric motor; So design, block selecting motor 21 can directly drive gearshift to refer to that 13 do straight line motion, in background technique, rotatablely moving of rotor is converted to straight-line extra mechanical device without arranging, simplify the mechanical structure of shift-selecting and changing actuating mechanism, reliability and speed of response are improved, and because mechanical structure is simplified, the volume of this actuator reduces, be easier to arrange.Please refer to Fig. 3-4, Fig. 3 is shift-selecting and changing actuating mechanism the second embodiment's provided by the present invention structural representation; Fig. 4 is the principle schematic of shift-selecting and changing actuating mechanism shown in Fig. 3.
The present embodiment indicates with same tag in Fig. 3 and Fig. 4 with member or structure that function in aforementioned the first embodiment communicates.
Shown in Fig. 3-4, known, the present embodiment and aforementioned the first embodiment's difference is, the power source of gear shifting actuating mechanism is shift motor 31 ', and this shift motor 31 ' is linear electric motor.Between shift motor 31 ' and gearshift shifting block 12, can connect by gearshift pull bar, under the driving of shift motor 31 ', drive gearshift shifting block 12 to move up and down, thereby drive the gearshift that is positioned at gearshift shifting block 12 to refer to that 13 move up and down, realize gearshift.
So design, compared with electric controlling and engine driving shift-selecting and changing actuating mechanism, the power source of gearshift is linear electric motor, shift motor 31 ' can directly drive gearshift to refer to that 13 do straight line motion, rotatablely moving of rotor is converted to straight-line extra mechanical device without arranging in background technique, simplifies the mechanical structure of shift-selecting and changing actuating mechanism, improve its controllability, and due to the simplification of this actuator, small volume, is easy to arrange.
Block selecting motor 21 in this embodiment also can be made as linear electric motor, and further to simplify the mechanical structure of shift-selecting and changing actuating mechanism, controllability is higher.
This embodiment is take two gears of same block selecting position as example explanation.
TCU receives after shifting order, produce corresponding output signal according to internal control strategy, drive block selecting motor 21, block selecting motor 21 drives (being the directions X in Fig. 4) movement to the left or to the right of block selecting pull bar 23 and block selecting shifting block 11, when gearshift refers to that 13 are moved to behind required block selecting position in the drive of block selecting shifting block 11, TCU sends instruction stops the action of block selecting motor 21.
TCU receives after the instruction that block selecting moved, TCU produces corresponding output signal, drives shift motor 31 ', and shift motor 31 ' drive gearshift shifting block 12 up or down (being the Y-direction in Fig. 4) is mobile, when gearshift refer to 13 gearshift shifting block 12 drive under on move or move down, realize gearshift.
Figure 4 shows that example, gearshift refers to that 13 are positioned at the block selecting position of 1 gear, 2 gears under the driving of block selecting motor 21, now, if gearshift refers to that 13 when move up under the driving of shift motor 31 ', speed changer will be hung 1 gear, if gearshift refers to that 13 when move down under the driving of shift motor 31 ', speed changer will be hung 2 and keep off.
In this embodiment, the power source of gear selection mechanism and gearshift is linear electric motor, it is the direct output linearity motion of rotor, without in background technique, rotatablely moving of rotor being converted to straight-line extra mechanical device, not only can reduce the volume of shift-selecting and changing actuating mechanism, also can improve sensitivity and the reliability of shift-selecting and changing actuating mechanism.
Except above-mentioned shift-selecting and changing actuating mechanism, the present invention also provides a kind of automatic transmission, this automatic transmission comprises planetary gears and shift-selecting and changing actuating mechanism, described shift-selecting and changing actuating mechanism is for changing the velocity ratio of described planetary gears, and described shift-selecting and changing actuating mechanism is the shift-selecting and changing actuating mechanism described in above-mentioned any one.
Because above-mentioned shift-selecting and changing actuating mechanism has above-mentioned technique effect, so comprise that the automatic transmission of this shift-selecting and changing actuating mechanism also has corresponding technique effect, repeats no more here.
Above automatic transmission provided by the present invention and shift-selecting and changing actuating mechanism thereof are all described in detail.Applied specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (8)
1. a shift-selecting and changing actuating mechanism, comprising:
Gearshift chamber, is inside provided with block selecting shifting block, gearshift shifting block and gearshift and refers to;
Gear selection mechanism, drives described block selecting shifting block to drive described gearshift to refer to move left and right with block selecting;
Gearshift, drives described gearshift shifting block to drive described gearshift to refer to move up and down to shift gears;
It is characterized in that, the power source of described gear selection mechanism is block selecting motor, and the power source of described gearshift is Pneumatic actuator or linear electric motor.
2. shift-selecting and changing actuating mechanism as claimed in claim 1, is characterized in that, described Pneumatic actuator comprises shifting cylinder and is located at the range piston bar of described shifting cylinder inner chamber; Described range piston bar drives described gearshift shifting block to move up and down under the driving of pressurized gas.
3. shift-selecting and changing actuating mechanism as claimed in claim 2, is characterized in that, described range piston bar comprises first piston bar and the second piston rod; The work area of described first piston bar is less than the work area of described the second piston rod;
The air chamber of described shifting cylinder is divided into upper gas chamber, middle air chamber and lower chamber by described first piston bar and described the second piston rod, each air chamber is equipped with gas port, and, between the gas port of described upper gas chamber, described lower chamber and high-pressure air source, be equipped with selector valve, to control air inlet or the exhaust of described upper gas chamber, described lower chamber, the gas port of described middle air chamber is communicated with atmosphere;
In described shifting cylinder, be also provided with bounding means, for limiting described the second piston rod mobile position upwards.
4. shift-selecting and changing actuating mechanism as claimed in claim 3, is characterized in that, described middle air chamber is ladder setting, has the step surface towards the piston end of described the second piston rod.
5. shift-selecting and changing actuating mechanism as claimed in claim 3, is characterized in that, the gas port of described middle air chamber and described upper gas chamber, and or, the relief opening of the selector valve of described lower chamber is communicated with.
6. shift-selecting and changing actuating mechanism as claimed in claim 1, is characterized in that, between described block selecting motor and described block selecting shifting block, connects by block selecting pull bar.
7. the shift-selecting and changing actuating mechanism as described in claim 1 to 6 any one, is characterized in that, described block selecting motor is linear electric motor.
8. an automatic transmission, comprise planetary gears and shift-selecting and changing actuating mechanism, described shift-selecting and changing actuating mechanism is used for changing the velocity ratio of described planetary gears, it is characterized in that, described shift-selecting and changing actuating mechanism is the shift-selecting and changing actuating mechanism described in claim 1 to 7 any one.
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| CN201310674336.1A CN103836174A (en) | 2013-12-11 | 2013-12-11 | Automatic transmission and gear selection and shift actuating mechanism thereof |
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| CN201310674336.1A CN103836174A (en) | 2013-12-11 | 2013-12-11 | Automatic transmission and gear selection and shift actuating mechanism thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104358864A (en) * | 2014-09-30 | 2015-02-18 | 东风商用车有限公司 | Electric AMT gear selecting and shifting mechanism |
| CN104500730A (en) * | 2014-12-29 | 2015-04-08 | 田立树 | Heavy-duty car speed changing box with semi-automatic speed changing device |
| CN104534075A (en) * | 2014-12-29 | 2015-04-22 | 田立树 | Speed change device used in semiautomatic speed change system of heavy truck |
| CN107178610A (en) * | 2017-06-14 | 2017-09-19 | 北京新能源汽车股份有限公司 | Gear switching control method and device and automatic gearbox control unit |
| CN107575572A (en) * | 2017-10-23 | 2018-01-12 | 山东交通学院 | A kind of tractor radio remote control electric gearshift |
| CN109384022A (en) * | 2018-11-30 | 2019-02-26 | 西安法士特汽车传动有限公司 | A kind of speed changer block selecting switching mechanism |
| WO2019178959A1 (en) * | 2018-03-21 | 2019-09-26 | 潍柴动力股份有限公司 | Gear selection and shifting actuating mechanism and method |
| CN110578792A (en) * | 2019-10-11 | 2019-12-17 | 中国人民解放军陆军工程大学 | Automatic operating device for gear shifting handle of excavator |
| CN110594399A (en) * | 2019-10-11 | 2019-12-20 | 中国人民解放军陆军工程大学 | Automatic operating device based on excavator gear shifting handle |
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| CN104358864A (en) * | 2014-09-30 | 2015-02-18 | 东风商用车有限公司 | Electric AMT gear selecting and shifting mechanism |
| CN104500730A (en) * | 2014-12-29 | 2015-04-08 | 田立树 | Heavy-duty car speed changing box with semi-automatic speed changing device |
| CN104534075A (en) * | 2014-12-29 | 2015-04-22 | 田立树 | Speed change device used in semiautomatic speed change system of heavy truck |
| CN107178610A (en) * | 2017-06-14 | 2017-09-19 | 北京新能源汽车股份有限公司 | Gear switching control method and device and automatic gearbox control unit |
| CN107178610B (en) * | 2017-06-14 | 2019-11-22 | 北京新能源汽车股份有限公司 | Gear method for handover control, device and automatic gear-box control unit |
| CN107575572A (en) * | 2017-10-23 | 2018-01-12 | 山东交通学院 | A kind of tractor radio remote control electric gearshift |
| WO2019178959A1 (en) * | 2018-03-21 | 2019-09-26 | 潍柴动力股份有限公司 | Gear selection and shifting actuating mechanism and method |
| US11506283B2 (en) | 2018-03-21 | 2022-11-22 | Weichai Power Co., Ltd. | Gear selection and shifting actuating mechanism and method |
| CN109384022A (en) * | 2018-11-30 | 2019-02-26 | 西安法士特汽车传动有限公司 | A kind of speed changer block selecting switching mechanism |
| CN109384022B (en) * | 2018-11-30 | 2024-01-02 | 西安法士特汽车传动有限公司 | Gear selecting and shifting mechanism of horizontal installation transmission |
| CN110578792A (en) * | 2019-10-11 | 2019-12-17 | 中国人民解放军陆军工程大学 | Automatic operating device for gear shifting handle of excavator |
| CN110594399A (en) * | 2019-10-11 | 2019-12-20 | 中国人民解放军陆军工程大学 | Automatic operating device based on excavator gear shifting handle |
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Application publication date: 20140604 |