CN106641235A - AMT (Automated Mechanical Transmission) hydraulic gear-shifting executing system with pressure limiting and positioning function - Google Patents
AMT (Automated Mechanical Transmission) hydraulic gear-shifting executing system with pressure limiting and positioning function Download PDFInfo
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- CN106641235A CN106641235A CN201710045884.6A CN201710045884A CN106641235A CN 106641235 A CN106641235 A CN 106641235A CN 201710045884 A CN201710045884 A CN 201710045884A CN 106641235 A CN106641235 A CN 106641235A
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- Prior art keywords
- pressure limiting
- positioning
- piston bar
- valve
- range piston
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Classifications
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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
- F16H61/22—Locking of the control input devices
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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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses an AMT (Automated Mechanical Transmission) hydraulic gear-shifting executing system with a pressure limiting and positioning function. The AMT hydraulic gear-shifting executing system comprises a valve body, wherein the valve body is provided with a plurality of piston holes; each piston hole is internally equipped with a gear-shifting piston rod; a first oil cavity and a second oil cavity are arranged between two ends of each gear-shifting piston rod and the valve body; a positioning end of each gear-shifting piston rod penetrates through the first oil cavity and is connected with a mechanical alignment and positioning device; the valve body is equipped with a position sensor; an interlocking device is arranged between the gear-shifting piston rods; the mechanical alignment and positioning device comprises an end cover mounted on the valve body and the end cover is internally and sequentially equipped with a pressure limiting and positioning device and a mechanical alignment device which are connected through a positioning shaft; the work of each gear-shifting piston rod is controlled through an electromagnetic proportion pressure reduction valve, and the positioning of all gears and the interlocking between the gears are realized by adopting the pressure limiting and positioning device and the mechanical interlocking device; the middle position of each gear-shifting piston rod is detected through the position sensor and control and execution work of the plurality of gears can be realized; and the AMT hydraulic gear-shifting executing system has relatively high control precision and gear-shifting reliability.
Description
Technical field
The present invention relates to automotive transmission technical field, more particularly to a kind of AMT hydraulic pressure with pressure limiting positioning function is changed
Shelves execution system.
Background technology
The predominantly organic tool formula of gear shifting actuating mechanism of AMT automatic transmission and fluid pressure type two types, wherein fluid pressure type is changed
The features such as gear execution structure has simple structure, arranges convenient, easy to control, is used widely in automatic transmission field.Mesh
The gearshift hydraulic actuating mechanism adopted in front AMT automatic transmission is by part groups such as hydraulic control circuit, hydraulic cylinder, gearshift reversal meanss
Into, and drive range is detected using sensing technology and is controlled, while disclosure satisfy that control accuracy requirement, greatly reduce
Shifting operation complexity.
The content of the invention
The technical problem to be solved is to provide a kind of tool with higher control accuracy and functional reliability
There are the AMT hydraulic shift execution systems of pressure limiting positioning function.
To solve above-mentioned technical problem, the technical scheme is that：A kind of AMT hydraulic pressure with pressure limiting positioning function is changed
Shelves execution system, including valve body, are provided with multiple piston holes being arranged in parallel on the valve body, install in each described piston hole
There is a range piston bar, a gear shift operation handle is installed on each described range piston bar, each described range piston bar
Two ends and the valve body between be provided with the first oil pocket and the second oil pocket, first oil pocket and second oil pocket lead to respectively
Cross a solenoid-operated proportional pressure-reducing valve to be connected with oil sources, the positioning end of the range piston bar passes through first oil pocket and is connected with
Mechanical alignment positioning device, on the range piston bar between the mechanical alignment positioning device and first oil pocket axle is provided with
Sealing device, is provided with the position sensor for detecting the range piston bar bit positions on the valve body；The gearshift
Interlock is provided between piston rod；
The mechanical alignment positioning device includes the end cap being arranged on the valve body, is sequentially installed with the end cap logical
The pressure limiting positioner and mechanical centering device of locating shaft connection are crossed, the pressure limiting positioner includes being arranged in the end cap
Positioning bushing, the positioning end end of the range piston bar be provided with stretches into it is described positioning bushing in the locating shaft, institute
Multiple positioning arc grooves be arrangeding in parallel are provided with the inwall for stating positioning bushing, are provided with the locating shaft and the positioning
The positioning plunger that arc groove coordinates, is provided with plunger locking pressure limiting regulation device in the locating shaft.
As a kind of preferred technical scheme, the shaft sealer include be sleeved on the range piston bar and with institute
The axle sleeve that valve body is fixedly connected is stated, the inner surface setting of the axle sleeve has seal groove, in the seal groove sealing ring is provided with.
Used as a kind of preferred technical scheme, the interlock includes being arranged in the valve body and connecting adjacent pistons
The interlocking axis hole in hole, is provided with mutual lock shaft in the interlocking axis hole, the range piston pole face is equal to the side of the mutual lock shaft
Interlock slot is provided with, the interlocking pin-and-hole of connection both sides interlock slot is provided with the middle range piston bar, it is described mutual
Interlocking plunger is installed in lockpin hole.
Used as a kind of preferred technical scheme, the plunger locking pressure limiting regulation device includes being arranged in the locating shaft
Valve-rod cavity, positioning valve rod is installed in the valve-rod cavity, the plunger vertical with the valve-rod cavity is provided with the locating shaft
Hole, the positioning plunger is arranged in the plunger hole, and the wedge coordinated with the positioning plunger is provided with the positioning valve rod
Connected in star, is provided with retaining spring in the valve-rod cavity between the positioning valve rod and the mechanical centering device, described fixed
The other end of position valve rod is connected with the pressure limiting regulation and control oil cylinder being arranged in the range piston bar.
Used as a kind of preferred technical scheme, the pressure limiting regulation and control oil cylinder includes the limit being arranged in the range piston bar
Pumping cavity, is provided with pressure limiting piston in the pressure limiting oil pocket, between the pressure limiting piston and positioning valve rod pressure limiting spring is provided with,
One end of the pressure limiting spring is resisted against on the pressure limiting piston and the other end is resisted against the end of the locating shaft, the pressure limiting
Oil pocket is connected by pressure limiting control valve with the oil sources.
Used as a kind of preferred technical scheme, the pressure limiting control valve includes the two-position three way connected with the pressure limiting oil pocket
Solenoid directional control valve, the two position, three-way electromagnetic change valve is connected with pressure-reducing valve.
Used as a kind of preferred technical scheme, the mechanical centering device includes the centering pad being sleeved on the locating shaft
Plate, the end of the locating shaft is provided with centering pre-tightening apparatus, be provided with opposite directions on the locating shaft press up against it is described right
Spring base on middle pre-tightening apparatus and the centering backing plate, on the locating shaft between two spring bases centering is set with
Spring.
Used as a kind of preferred technical scheme, the centering pre-tightening apparatus include being arranged on the centering of the positioning shaft end
Screw, is sequentially installed with spring washer and pad, outside the pad between the nut and the locating shaft of the centering screw
Edge is pressed against on the adjacent spring base.
Used as a kind of preferred technical scheme, the gear shift operation handle includes selector fork or gearshift reversal means.
As a kind of preferred technical scheme, three piston holes are provided with the valve body, peace in each described piston hole
Equipped with a range piston bar, the range piston bar includes the first range piston bar, the second range piston bar and the 3rd gearshift
Piston rod；
The left end of the first range piston bar is connected with the mechanical alignment positioning device and right-hand member is from the valve body
The gear shift operation handle is stretched out and is provided with, between the valve body and the first range piston bar on the outside of second oil pocket
Sealing ring is installed；
The right-hand member of the 3rd range piston bar is connected with the mechanical alignment positioning device and left end is from the valve body
The gear shift operation handle is stretched out and is provided with, between the valve body and the 3rd range piston bar on the outside of second oil pocket
Sealing ring is installed；
The left end of the second range piston bar is connected with the mechanical alignment positioning device and right-hand member ends in described
In the piston hole on the inside of two oil pockets, the gear shift operation handle is installed on the middle part of the second range piston bar.
As a result of above-mentioned technical proposal, a kind of AMT hydraulic shift execution systems with pressure limiting positioning function, including
Valve body, is provided with multiple piston holes being arranged in parallel on the valve body, a range piston is provided with each described piston hole
Bar, on each described range piston bar a gear shift operation handle is provided with, two ends and the valve of each range piston bar
The first oil pocket and the second oil pocket are provided between body, first oil pocket and second oil pocket pass through respectively a solenoid-operated proportional
Pressure-reducing valve is connected with oil sources, and the positioning end of the range piston bar passes through first oil pocket and is connected with mechanical centering positioning dress
Put, shaft sealer is installed on the range piston bar between the mechanical alignment positioning device and first oil pocket, it is described
Position sensor for detecting the range piston bar bit positions is installed on valve body；Arrange between the range piston bar
There is interlock；The mechanical alignment positioning device is arranged on the end cap on the valve body, is sequentially installed with the end cap logical
The pressure limiting positioner and mechanical centering device of locating shaft connection are crossed, the pressure limiting positioner includes being arranged in the end cap
Positioning bushing, the positioning end end of the range piston bar be provided with stretches into it is described positioning bushing in the locating shaft, institute
Multiple positioning arc grooves be arrangeding in parallel are provided with the inwall for stating positioning bushing, are provided with the locating shaft and the positioning
The positioning plunger that arc groove coordinates, is provided with plunger locking pressure limiting regulation device in the locating shaft；Reduced pressure by solenoid-operated proportional
Valve controls the work of each range piston bar, and realizes the positioning and gear of each gear using pressure limiting positioner, mechanical interlock
The interlocking of interdigit, by position sensor the bit positions of range piston bar are detected, can be realized the control of multiple gears and be held
Row work, with higher control accuracy and gearshift reliability, can preferably improve and be lifted the gearshift of AMT automatic transmission
Quality.
Description of the drawings
The following drawings is only intended in schematic illustration and explanation is done to the present invention, is not delimit the scope of the invention.Wherein：
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the A-A sectional views in Fig. 1；
Fig. 3 is the B-B sectional views in Fig. 1；
Fig. 4 is the C-C sectional views in Fig. 1；
Fig. 5 is the D-D sectional views in Fig. 2；
Fig. 6 is the structural representation of the hydraulic gear-shifting execution system that the embodiment of the present invention is provided with gearshift reversal means；
In figure：1- valve bodies；21- the first range piston bars；22- the second range piston bars；The range piston bars of 23- the 3rd；31-
First oil pocket；The oil pockets of 32- second；33- two position, three-way electromagnetic change valves；34- solenoid-operated proportional pressure-reducing valves；41- axle sleeves；42- is sealed
Circle；43- end caps；44- positions bushing；45- positions plunger；46- locating shafts；47- positions arc groove；48- retaining springs；5- positions
Sensor；The mutual lock shafts of 61-；62- interlock slots；63- interlocking plungers；64- selector forks；65- gearshift reversal meanss；71- centering backing plates；72-
Spring base；73- centralizing springs；74- centering screws；75- spring washers；76- pads；81- positions valve rod；82- wedge-shaped impressions；
83- pressure limiting pistons；84- pressure limiting springs；85- pressure limiting oil pockets；86- pressure-reducing valves.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.In the following detailed description, only by explanation
Mode describes some one exemplary embodiments of the present invention.Undoubtedly, one of ordinary skill in the art will recognize,
In the case of without departing from the spirit and scope of the present invention, can be being repaiied to described embodiment with a variety of modes
Just.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting scope of the claims.
As depicted in figs. 1 and 2, a kind of AMT hydraulic shift execution systems with pressure limiting positioning function, including valve body 1, institute
State and multiple piston holes being arranged in parallel are provided with valve body 1, a range piston bar and shape are installed in each described piston hole
Into one group of hydraulic cylinder, a gear shift operation handle is installed on each described range piston bar, as shown in fig. 6, the gear shift operation
Handle includes selector fork 64 or gearshift reversal means 65, and the is provided between the two ends of each range piston bar and the valve body 1
One oil pocket 31 and the second oil pocket 32, first oil pocket 31 and second oil pocket 32 pass through respectively a solenoid-operated proportional pressure-reducing valve
34 are connected with oil sources, and the positioning end of the range piston bar passes through first oil pocket 31 and is connected with mechanical centering positioning dress
Put, sealing dress is installed on the range piston bar between the mechanical alignment positioning device and first oil pocket 31
Put, the shaft sealer includes being sleeved on the axle sleeve 41 being fixedly connected on the range piston bar and with the valve body 1, described
The inner surface setting of axle sleeve 41 has seal groove, and sealing ring 42 is provided with the seal groove, is provided with the valve body 1 for examining
Survey the position sensor 5 of the range piston bar bit positions；Interlock is provided between the range piston bar；
As shown in Fig. 2 the mechanical alignment positioning device includes the end cap 43 being arranged on the valve body 1, the end cap
The pressure limiting positioner and mechanical centering device connected by locating shaft 46, the pressure limiting positioner bag are sequentially installed with 43
The positioning bushing 44 in the end cap 43 is included, the positioning end end of the range piston bar is provided with stretches into the positioning
The locating shaft 46 in bushing 44, on the inwall of the positioning bushing 44 multiple positioning arc grooves be arrangeding in parallel are provided with
47, the positioning plunger 45 coordinated with the positioning arc groove 47 is installed on the locating shaft 46, install in the locating shaft 46
There is plunger to lock pressure limiting regulation device, the plunger locking pressure limiting regulation device includes the valve rod being arranged in the locating shaft 46
Chamber, is provided with positioning valve rod 81 in the valve-rod cavity, the plunger hole vertical with the valve-rod cavity is provided with the locating shaft 46,
The positioning plunger 45 is arranged in the plunger hole, is provided with the positioning valve rod 81 and positioning plunger 45 cooperation
Wedge-shaped impression 82, in the valve-rod cavity between the positioning valve rod 81 and the mechanical centering device retaining spring is provided with
48, the other end of the positioning valve rod 81 is connected with the pressure limiting regulation and control oil cylinder being arranged in the range piston bar, the pressure limiting
Regulation and control oil cylinder includes the pressure limiting oil pocket 85 being arranged in the range piston bar, and in the pressure limiting oil pocket 85 pressure limiting piston is provided with
83, pressure limiting spring 84 is installed between the pressure limiting piston 83 and positioning valve rod 81, one end of the pressure limiting spring 84 is resisted against
On the pressure limiting piston 83 and the other end is resisted against the end of the locating shaft 46, the pressure limiting oil pocket 85 passes through pressure limiting control valve
Connect with the oil sources, the pressure limiting control valve includes the two position, three-way electromagnetic change valve 33 connected with the pressure limiting oil pocket 85,
The two position, three-way electromagnetic change valve 33 is connected with pressure-reducing valve 86.As shown in figure 5, the interlock includes being arranged on the valve
The interlocking axis hole in body 1 and connection adjacent pistons hole, is provided with mutual lock shaft 61, the range piston pole face in the interlocking axis hole
Side to the mutual lock shaft 61 is provided with interlock slot 62, and connection both sides are provided with the middle range piston bar
The hole of interlocking plunger 63 of interlock slot 62, the interlocking plunger 63 is provided with interlocking plunger 63 in hole.In the present embodiment, such as Fig. 2, Fig. 3 and
Shown in Fig. 4, the range piston bar includes the first range piston bar 21, the second range piston bar 22 and the 3rd range piston bar
23；The both sides of the second range piston bar 22 are provided with interlock slot 62, the first range piston bar 21 and the 3rd range piston bar 23
Side towards the second range piston bar 22 is provided with interlock slot 62, and on the second range piston bar 22 interlocking plunger 63 is provided with
Hole.In shift process, mutual lock shaft 61 is promoted to snap in other range piston bars by the face of cylinder of the range piston bar for working
In interlock slot 62, interlocking is realized.
As described in Figure 2, the mechanical centering device includes the centering backing plate 71 being sleeved on the locating shaft 46, described fixed
The end of position axle 46 is provided with centering pre-tightening apparatus, and the centering pre-tightening apparatus include being arranged on the right of the end of the locating shaft 46
Middle screw 74, between the nut and the locating shaft 46 of the centering screw 74 spring washer 75 and pad 76 are sequentially installed with,
The spring base pressed up against on the centering pre-tightening apparatus and the centering backing plate 71 is installed in opposite directions on the locating shaft 46
72, the outer rim of the pad 76 is pressed against the positioning on the adjacent spring base 72, between two spring bases 72
Centralizing spring 73 is set with axle 46.
Specifically, as shown in figure 1, being provided with three piston holes on the valve body 1, in each described piston hole one is provided with
Individual range piston bar, as shown in Figure 2, Figure 3 and Figure 4, the range piston bar includes that the first range piston bar 21, second is shifted gears and lives
The range piston bar 23 of stopper rod 22 and the 3rd；The left end of the first range piston bar 21 is connected with the mechanical alignment positioning device
And right-hand member stretches out and is provided with the gear shift operation handle, the He of the valve body 1 in the outside of second oil pocket 32 from the valve body 1
Sealing ring 42 is installed between the first range piston bar 21；The right-hand member of the 3rd range piston bar 23 is connected with described
Mechanical alignment positioning device and left end stretch out and are provided with the gear shift operation handle, second oil pocket 32 from the valve body 1
Sealing ring 42 is installed between the valve body 1 and the 3rd range piston bar 23 in outside；The second range piston bar
22 left end is connected with the mechanical alignment positioning device and right-hand member ends in the piston hole of the inner side of second oil pocket 32
Interior, the gear shift operation handle is installed on the middle part of the second range piston bar 22.
Three range piston bars are capable of achieving the gearshift execution work of six gears, in different gearboxes, can be according to change
The quantity of fast device gear quantity exchange gear piston rod and its corresponding pressure limiting positioner and oil circuit control is adjusted.According to change
The setting of fast device gear positions, the length of shaft part is exported by changing range piston bar, makes shift fork and transmission gear position
Match somebody with somebody.First range piston bar 21 as shown in Figure 2, according to gearbox gear positions, changes the length of its right deferent segment, makes to dial
Fork matches with the position of transmission gear.
The positioning valve rod 81 is provided with wedge-shaped impression 82, and when positioning plunger 45 is in bottom portion of groove, positioning plunger 45 takes off
From the positioning arc groove 47 of positioning bushing 44, range piston bar is set to move left and right.
As shown in fig. 6, the present invention can also adopt integrated multigroup structure identical gearshift hydraulic cylinder on valve body 1, changing
Gearshift reversal means 65 is installed on gear piston rod and carrys out shift fork bar, and then indirectly shift fork completes the technical scheme of gear shifting action.
Below according to Fig. 2 and with reference to the first range piston bar 21 the course of work be explained further the present invention work it is former
Reason：
1st, the positioning of range piston bar
The oil pressure and oil circuit of the pressure-reducing valve 86 and the control of two position, three-way electromagnetic change valve 33 pressure limiting oil pocket 85 enter fuel-displaced
State.
In shift process, two position, three-way electromagnetic change valve 33 is in right working position makes oil inlet P connect with pressure limiting oil pocket 85
It is logical, promote pressure limiting piston 83 to be moved to the left, pressure limiting piston 83 compresses pressure limiting spring 84 and retaining spring 48 and promotes positioning valve rod
81 to left movement, makes positioning plunger 45 drop to the bottom portion of groove of positioning valve rod 81, departs from the positioning arc groove of positioning bushing 44
47。
When range piston bar reaches gear positions, two position, three-way electromagnetic change valve 33 will transition to left working position, make limit
Pumping cavity 85 is connected with fuel tank, and under the thrust of pressure limiting spring 84 and retaining spring 48, positioning valve rod 81 and pressure limiting piston 83 are right
Shifting, the groove slope driving positioning plunger 45 of positioning valve rod 81 to snap onto realized in the positioning arc groove 47 for positioning bushing 44 to be determined
Position.
2nd, gearshift work
In embodiment as shown in Figure 2, the first range piston bar 21 snaps in positioning in middle neutral position, positioning plunger 45
In the interfix arc groove 47 of bushing 44, the positioning in the centre position of range piston bar is realized, while by the He of centralizing spring 73
The mechanical centering device of the grade composition of spring base 72 is in Shaft alignment state, and position sensor 5 is detected in the first range piston bar 21
Position position.
When corresponding solenoid-operated proportional pressure-reducing valve 34 controls the pressure of the first oil pocket 31 and the second oil pocket 32, first is promoted to shift gears
Piston rod 21 compresses centralizing spring 73 and to left movement, now positions the interfix arc groove that plunger 45 departs from positioning bushing 44
47, until range piston bar reaches left side gear positions (extreme position), position the left end that plunger 45 is embedded into positioning bushing 44
In positioning arc groove 47, the positioning of range piston bar gear positions is realized.
The operation principle of each group hydraulic cylinder is identical, will not be described here.
3rd, gear interlocking
When having one to be shifted gears in the first range piston bar 21, the second range piston bar 22 and the 3rd range piston bar 23
During work, the range piston bar will promote corresponding mutually lock shaft 61 to snap in the interlock slot 62 of two other range piston bar, make
Other two range piston bars are stuck, and reach interlocking effect.
Description of the invention is given for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are for the ordinary skill in the art obvious.Select and retouch
It is to more preferably illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed to state embodiment
The present invention is solved so as to design the various embodiments with various modifications for being suitable to special-purpose.
Claims (10)
1. a kind of AMT hydraulic shift execution systems with pressure limiting positioning function, including valve body, it is characterised in that：The valve body
On be provided with multiple piston holes being arranged in parallel, a range piston bar is installed in each described piston hole, change described in each
A gear shift operation handle is installed on gear piston rod, the is provided between the two ends of each range piston bar and the valve body
One oil pocket and the second oil pocket, first oil pocket and second oil pocket are connected respectively by a solenoid-operated proportional pressure-reducing valve with oil sources
Connect, the positioning end of the range piston bar passes through first oil pocket and is connected with mechanical alignment positioning device, and the machinery is right
Shaft sealer is installed on the range piston bar between middle positioner and first oil pocket, use is installed on the valve body
In the position sensor for detecting the range piston bar bit positions；Interlock is provided between the range piston bar；
The mechanical alignment positioning device includes the end cap being arranged on the valve body, is sequentially installed with the end cap by fixed
The pressure limiting positioner and mechanical centering device of position axle connection, the pressure limiting positioner includes being arranged on determining in the end cap
Position bushing, the positioning end end of the range piston bar is provided with the locating shaft stretched into the positioning bushing, described fixed
Multiple positioning arc grooves be arrangeding in parallel are provided with the inwall of position bushing, are provided with the locating shaft and the positioning circular arc
The positioning plunger that groove coordinates, is provided with plunger locking pressure limiting regulation device in the locating shaft.
2. there is as claimed in claim 1 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Shaft sealer includes being sleeved on the axle sleeve being fixedly connected on the range piston bar and with the valve body, the interior table of the axle sleeve
Face is provided with seal groove, and in the seal groove sealing ring is provided with.
3. there is as claimed in claim 1 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Interlock includes being arranged in the valve body and connecting the interlocking axis hole in adjacent pistons hole, is provided with the interlocking axis hole mutually
Lock shaft, the range piston pole face to the side of the mutual lock shaft is provided with interlock slot, positioned at the middle range piston
The interlocking pin-and-hole of connection both sides interlock slot is provided with bar, interlocking plunger is installed in the interlocking pin-and-hole.
4. there is as claimed in claim 1 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Plunger locking pressure limiting regulation device includes the valve-rod cavity being arranged in the locating shaft, and in the valve-rod cavity normal valve is provided with
Bar, is provided with the plunger hole vertical with the valve-rod cavity on the locating shaft, the positioning plunger is arranged in the plunger hole,
The wedge-shaped impression coordinated with the positioning plunger is provided with the positioning valve rod, the positioning valve rod is filled with the mechanical centering
Retaining spring is installed, the other end of the positioning valve rod is connected with and is arranged on the gearshift work in the valve-rod cavity between putting
Pressure limiting regulation and control oil cylinder in stopper rod.
5. there is as claimed in claim 4 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Pressure limiting regulation and control oil cylinder includes the pressure limiting oil pocket being arranged in the range piston bar, and pressure limiting work is provided with the pressure limiting oil pocket
Plug, between the pressure limiting piston and positioning valve rod pressure limiting spring is provided with, and one end of the pressure limiting spring is resisted against the pressure limiting
On piston and the other end is resisted against the end of the locating shaft, the pressure limiting oil pocket is connected by pressure limiting control valve with the oil sources
It is logical.
6. there is as claimed in claim 5 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Pressure limiting control valve includes the two position, three-way electromagnetic change valve connected with the pressure limiting oil pocket, and the two position, three-way electromagnetic change valve connects
It is connected to pressure-reducing valve.
7. there is as claimed in claim 1 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Mechanical centering device includes the centering backing plate being sleeved on the locating shaft, and the end of the locating shaft is provided with centering pretension dress
Put, the spring base pressed up against on the centering pre-tightening apparatus and the centering backing plate be installed in opposite directions on the locating shaft,
Centralizing spring is set with the locating shaft between two spring bases.
8. there is as claimed in claim 7 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Centering pre-tightening apparatus include being arranged on the centering screw of the positioning shaft end, nut and the locating shaft of the centering screw
Between be sequentially installed with spring washer and pad, the outer rim of the pad is pressed against on the adjacent spring base.
9. there is as claimed in claim 1 the AMT hydraulic shift execution systems of pressure limiting positioning function, it is characterised in that：It is described
Gear shift operation handle includes selector fork or gearshift reversal means.
10. AMT hydraulic shift execution systems with pressure limiting positioning function as described in claim 1 to 9 any claim,
It is characterized in that：Three piston holes are provided with the valve body, a range piston bar, institute are installed in each described piston hole
Range piston bar is stated including the first range piston bar, the second range piston bar and the 3rd range piston bar；
The left end of the first range piston bar is connected with the mechanical alignment positioning device and right-hand member stretches out from the valve body
And the gear shift operation handle is installed, the peace between the valve body and the first range piston bar on the outside of second oil pocket
Equipped with sealing ring；
The right-hand member of the 3rd range piston bar is connected with the mechanical alignment positioning device and left end stretches out from the valve body
And the gear shift operation handle is installed, the peace between the valve body and the 3rd range piston bar on the outside of second oil pocket
Equipped with sealing ring；
The left end of the second range piston bar be connected with the mechanical alignment positioning device and right-hand member to end in described second oily
In the piston hole on the inside of chamber, the gear shift operation handle is installed on the middle part of the second range piston bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045884.6A CN106641235B (en) | 2017-01-22 | 2017-01-22 | A kind of AMT hydraulic shifts execution system with pressure limiting positioning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045884.6A CN106641235B (en) | 2017-01-22 | 2017-01-22 | A kind of AMT hydraulic shifts execution system with pressure limiting positioning function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106641235A true CN106641235A (en) | 2017-05-10 |
| CN106641235B CN106641235B (en) | 2018-08-28 |
Family
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| CN201710045884.6A Active CN106641235B (en) | 2017-01-22 | 2017-01-22 | A kind of AMT hydraulic shifts execution system with pressure limiting positioning function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765220A (en) * | 2020-06-03 | 2020-10-13 | 浙江日发精密机床有限公司 | Three-speed gear box structure |
| CN112747113A (en) * | 2021-01-13 | 2021-05-04 | 合升智能技术(无锡)有限公司 | Automatic gear shifting device of AMT (automated mechanical transmission) gearbox of commercial vehicle |
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| CN204573063U (en) * | 2015-04-23 | 2015-08-19 | 中国重汽集团大同齿轮有限公司 | Multi-speed gear box mono-lever control mechanism |
| CN204755780U (en) * | 2015-05-06 | 2015-11-11 | 横店集团英洛华电气有限公司 | Electric tricycle's self shifter mechanism |
| CN206449189U (en) * | 2017-01-22 | 2017-08-29 | 山东海卓电液控制工程技术研究院 | A kind of AMT hydraulic shifts executing agency with pressure limiting positioning function |
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| JPH06147315A (en) * | 1992-11-09 | 1994-05-27 | Toyota Motor Corp | Shifting device for manual transmission |
| CN1215813A (en) * | 1997-09-12 | 1999-05-05 | 易通公司 | Shift rail detent assembly |
| CN101245850A (en) * | 2008-03-20 | 2008-08-20 | 重庆大学 | Mechanical automatic speed-changing direct-shifting hydraulic actuator of heavy vehicle |
| CN202418541U (en) * | 2011-12-31 | 2012-09-05 | 龙工(上海)机械制造有限公司 | Protecting device for non-neutral-position starting of loading machine |
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| FR3005709A1 (en) * | 2013-05-17 | 2014-11-21 | Peugeot Citroen Automobiles Sa | METHOD FOR CONTROLLING A MOTOR PROPELLER GROUP WITH A THERMAL MOTOR AND AN AUTOMATED GEARBOX |
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| CN204573063U (en) * | 2015-04-23 | 2015-08-19 | 中国重汽集团大同齿轮有限公司 | Multi-speed gear box mono-lever control mechanism |
| CN204755780U (en) * | 2015-05-06 | 2015-11-11 | 横店集团英洛华电气有限公司 | Electric tricycle's self shifter mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765220A (en) * | 2020-06-03 | 2020-10-13 | 浙江日发精密机床有限公司 | Three-speed gear box structure |
| CN112747113A (en) * | 2021-01-13 | 2021-05-04 | 合升智能技术(无锡)有限公司 | Automatic gear shifting device of AMT (automated mechanical transmission) gearbox of commercial vehicle |
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| Publication number | Publication date |
|---|---|
| CN106641235B (en) | 2018-08-28 |
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