CN206449188U - A kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function - Google Patents
A kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function Download PDFInfo
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- CN206449188U CN206449188U CN201720083314.1U CN201720083314U CN206449188U CN 206449188 U CN206449188 U CN 206449188U CN 201720083314 U CN201720083314 U CN 201720083314U CN 206449188 U CN206449188 U CN 206449188U
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- gearshift
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Abstract
The utility model discloses a kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function, including valve body, gear selection mechanism and gearshift are integrated with valve body, gear selection mechanism includes the block selecting piston hole being arranged on valve body, block selecting piston rod is installed, the positioning end of block selecting piston rod is connected with block selecting positioner and block selecting centralising device in turn in block selecting piston hole；Gearshift includes being provided with range piston bar in the range piston hole being arranged on valve body, range piston hole, and the positioning end of range piston bar is connected with gearshift positioner；Block selecting and gearshift using two mutually orthogonal arrangements complete the shifting work of multiple gears, position positioning is carried out to block selecting piston rod by block selecting positioner, positioned and middle position detection using two pairs of gearshift piston rods of gearshift positioner and position sensor, make gear shifting action smoother, gear shifting action impact is reduced, while the characteristics of there is simple in construction, easily controllable, high gearshift control accuracy, reliable operation.
Description
Technical field
The utility model is related to automotive transmission technical field, and in particular to a kind of AMT choosings with pressure limiting positioning function
Gearshift hydraulic actuating mechanism.
Background technology
Shifting execution system is the main device that automatic transmission realizes self shifter work, is performed for gearshift hydraulic pressure
System, the features such as it has big, easily controllable energy capacity, reliable operation, has in automatic transmission field before wide application
Scape.Most AMT gearshifts hydraulic executing systems control each selector fork axle to realize gearshift control respectively using multigroup hydraulic cylinder, save
Block selecting action is gone.But the integrated and control of multigroup hydraulic cylinder makes its structure complex, hydraulic control member needed for simultaneity factor
Part is also more, and the control accuracy of hydraulic actuating mechanism is have impact on to a certain extent.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of AMT shifting hydraulic pressure with pressure limiting positioning function
Executing agency, the shifting for realizing AMT using the choosing of mutually orthogonal distribution, gearshift works, while having simple in construction, control
The characteristics of precision height processed, reliable operation.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of AMT choosings with pressure limiting positioning function
Gear selection mechanism and gearshift, the gear selection mechanism connection are integrated with gearshift hydraulic actuating mechanism, including valve body, the valve body
There is block selecting to control oil circuit, the gearshift is connected with gearshift control oil circuit；
The gear selection mechanism includes being provided with choosing in the block selecting piston hole being arranged on the valve body, the block selecting piston hole
Keep off piston rod, a gearshift reversal means be installed on the block selecting piston rod, the two ends and the valve body of the block selecting piston rod it
Between be provided with the first block selecting oil pocket and the second block selecting oil pocket, the first block selecting oil pocket and the second block selecting oil pocket and the choosing
Gear control oil circuit connection, the positioning end of the block selecting piston rod passes through the first block selecting oil pocket and is connected with block selecting positioning in turn
Pacify on device and block selecting centralising device, the block selecting piston rod between the block selecting positioner and the first block selecting oil pocket
Equipped with block selecting shaft sealer；The block selecting coordinated with the block selecting positioner is provided with the block selecting piston rod and locks pressure limiting
Regulation device, the block selecting locking pressure limiting regulation device is connected with block selecting control oil circuit；
The gearshift, which includes being provided with the range piston hole being arranged on the valve body, the range piston hole, to be changed
Keep off piston rod, a gearshift axle sleeve be installed on the range piston bar, the two ends and the valve body of the range piston bar it
Between be provided with the first gearshift oil pocket and second gearshift oil pocket, it is described first gearshift oil pocket and it is described second gearshift oil pocket changed with described
Gear control oil circuit connection, the positioning end of the range piston bar passes through the described first gearshift oil pocket and is connected with gearshift positioning dress
Put, gearshift sealing dress is installed on the range piston bar between the gearshift positioner and the first gearshift oil pocket
Put, the shift locking pressure limiting regulation device coordinated with the gearshift positioner is provided with the range piston bar, it is described to change
Gear locking pressure limiting regulation device is connected with the gearshift control oil circuit；It is provided with the valve body for detecting the range piston
The position sensor two of bar bit positions；
Rack and pinion drive is provided between the gearshift axle sleeve and the gearshift reversal means.
As a kind of perferred technical scheme, the gear selection mechanism and the gearshift are in mutually orthogonal distribution.
As a kind of perferred technical scheme, block selecting control oil circuit includes the oil inlet P being connected with fuel tank, it is described enter
Hydraulic fluid port P is connected with the first block selecting oil pocket and the second block selecting oil pocket respectively by two solenoid-operated proportional pressure-reducing valves, and
The oil inlet P locks the block selecting pressure limiting of pressure limiting regulation device by pressure-reducing valve and two position, three-way electromagnetic change valve with the block selecting
Oil pocket is connected.
As a kind of perferred technical scheme, cover is installed with the valve body of the block selecting piston rod positioning end to buckle
Block selecting end cap on the block selecting positioner and the block selecting centralising device；
The block selecting positioner includes the block selecting positioning bushing being arranged in the block selecting end cap, the block selecting piston rod
Positioning end end be provided with the block selecting locating shaft stretched into block selecting positioning bushing, the inwall of the block selecting positioning bushing
Be provided with multiple block selectings positioning arc grooves and position sensor one be arrangeding in parallel, the block selecting locating shaft be provided with it is described
The block selecting positioning plunger that block selecting positioning arc groove coordinates, the block selecting locking pressure limiting regulation device is passed with block selecting positioning plunger
Dynamic connection；
The block selecting centralising device includes the centering backing plate being sleeved on the block selecting locating shaft, the block selecting locating shaft
End is provided with centering screw, the block selecting locating shaft opposite be provided with and presses up against the centering screw and the centering
Centralizing spring is set with the block selecting locating shaft between spring base on backing plate, two spring bases.
As a kind of perferred technical scheme, the block selecting shaft sealer include be sleeved on the block selecting piston rod and
The block selecting piston rod axle sleeve being fixedly connected with the valve body, the inner surface setting of the block selecting piston rod axle sleeve has seal groove, institute
State and block selecting sealing ring is installed in seal groove.
As a kind of perferred technical scheme, the block selecting locking pressure limiting regulation device includes being arranged on the block selecting positioning
Block selecting positioning valve rod is installed in the block selecting valve-rod cavity in axle, the block selecting valve-rod cavity, be provided with the block selecting locating shaft with
The vertical block selecting plunger hole of the block selecting valve-rod cavity, the block selecting positioning plunger is arranged in the block selecting plunger hole, the choosing
Be provided with gear positioning valve rod and position the block selecting wedge-shaped impression that plunger coordinates with the block selecting, block selecting positioning valve rod with it is described
Block selecting retaining spring, the other end connection of the block selecting positioning valve rod are installed in the valve-rod cavity between block selecting centralising device
There is the block selecting pressure limiting regulation and control oil cylinder being arranged in the block selecting piston rod；
The block selecting pressure limiting regulation and control oil cylinder includes the block selecting pressure limiting oil pocket being arranged in the block selecting piston rod, the block selecting
Block selecting pressure limiting piston is installed in pressure limiting oil pocket, block selecting pressure limiting is installed between the block selecting pressure limiting piston and block selecting positioning valve rod
Spring, one end of the block selecting pressure limiting spring is resisted against on the block selecting pressure limiting piston and the other end is resisted against the block selecting positioning
The end of axle, the block selecting pressure limiting oil pocket is connected with block selecting control oil circuit.
As a kind of perferred technical scheme, the gearshift control oil circuit includes the oil inlet P that is connected with fuel tank, it is described enter
Hydraulic fluid port P is connected with the described first gearshift oil pocket and the second gearshift oil pocket respectively by two two position, three-way electromagnetic change valves,
And the oil inlet P passes through the gearshift of pressure-reducing valve and two position, three-way electromagnetic change valve and the shift locking pressure limiting regulation device
Pressure limiting oil pocket is connected.
As a kind of perferred technical scheme, the gearshift positioner includes being fixedly mounted on changing for the valve end
Keep off in end cap, the gearshift end cap and gearshift positioning bushing is installed, the positioning end end of the range piston bar, which is provided with, to be stretched into
Be provided with gearshift locating shaft in the gearshift positioning bushing, the inwall of gearshift positioning bushing it is multiple be arranged in parallel change
The gearshift coordinated with the gearshift positioning arc groove is installed on gear positioning arc groove, the gearshift locating shaft and positions plunger, institute
State shift locking pressure limiting regulation device and the gearshift positioning plunger drive connection.
As a kind of perferred technical scheme, the shift locking pressure limiting regulation device includes being arranged on the gearshift positioning
Gearshift positioning valve rod is installed in the gearshift valve-rod cavity in axle, the gearshift valve-rod cavity, be provided with the gearshift locating shaft with
The gearshift plunger hole of the gearshift valve-rod cavity vertically, the gearshift positioning plunger is arranged in the gearshift plunger hole, described to change
The gearshift wedge-shaped impression coordinated with the gearshift positioning plunger, the free end of the gearshift valve-rod cavity are provided with gear positioning valve rod
Mouth is provided with gearshift positioning screw, the valve-rod cavity between the gearshift positioning valve rod and the gearshift positioning screw and installed
There is gearshift retaining spring, the other end of the gearshift positioning valve rod is connected with the gearshift pressure limiting being arranged in the range piston bar
Regulate and control oil cylinder；
The gearshift pressure limiting regulation and control oil cylinder includes the gearshift pressure limiting chamber being arranged in the range piston bar, the gearshift limit
Pressure intracavitary is provided with gearshift pressure limiting piston, and gearshift pressure limiting bullet is provided between the gearshift pressure limiting piston and gearshift positioning valve rod
Spring, one end of the gearshift pressure limiting spring is resisted against on the gearshift pressure limiting piston and the other end is resisted against the gearshift locating shaft
End, the gearshift pressure limiting oil pocket with it is described gearshift control oil circuit be connected.
As a kind of perferred technical scheme, it is described gearshift shaft sealer include be sleeved on the range piston bar and
The range piston rod sleeve being fixedly connected with the valve body, the inner surface setting of the range piston rod sleeve has seal groove, institute
State and gearshift sealing ring is installed in seal groove.
By adopting the above-described technical solution, a kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function, bag
Include and gear selection mechanism and gearshift are integrated with valve body, the valve body, the gear selection mechanism is connected with block selecting control oil circuit, described
Gearshift is connected with gearshift control oil circuit；The gear selection mechanism includes the block selecting piston hole being arranged on the valve body, described
It is provided with block selecting piston hole on block selecting piston rod, the block selecting piston rod and a gearshift reversal means, each block selecting is installed
Be provided with the first block selecting oil pocket and the second block selecting oil pocket between the two ends of piston rod and the valve body, the first block selecting oil pocket and
The second block selecting oil pocket is connected with block selecting control oil circuit, and the positioning end of the block selecting piston rod passes through first block selecting
Oil pocket is simultaneously connected with block selecting positioner and block selecting centralising device in turn, the block selecting positioner and the first block selecting oil pocket
Between the block selecting piston rod on block selecting shaft sealer is installed；It is fixed with the block selecting to be provided with the block selecting piston rod
The block selecting locking pressure limiting regulation device that position device coordinates, the block selecting locking pressure limiting regulation device connects with block selecting control oil circuit
Connect；The gearshift includes being provided with gearshift work in the range piston hole being arranged on the valve body, the range piston hole
A gearshift axle sleeve is installed on stopper rod, the range piston bar, the two ends and the valve body of each range piston bar it
Between be provided with the first gearshift oil pocket and second gearshift oil pocket, it is described first gearshift oil pocket and it is described second gearshift oil pocket changed with described
Gear control oil circuit connection, the positioning end of the range piston bar passes through the described first gearshift oil pocket and is connected with gearshift positioning dress
Put, gearshift sealing dress is installed on the range piston bar between the gearshift positioner and the first gearshift oil pocket
Put, the shift locking pressure limiting regulation device coordinated with the gearshift positioner is provided with the range piston bar, it is described to change
Gear locking pressure limiting regulation device is connected with the gearshift control oil circuit；It is provided with the valve body for detecting the range piston
The position sensor two of bar bit positions；Rack pinion dress is provided between the gearshift axle sleeve and the gearshift reversal means
Put；Block selecting and gearshift using two mutually orthogonal arrangements complete the shifting work of multiple gears, are positioned by block selecting
Device carries out position positioning to block selecting piston rod, is determined using two pairs of gearshift piston rods of gearshift positioner and position sensor
Position and middle position detection, the height of positioning plunger is can control in shift process, makes gear shifting action smoother, reduction gear shifting action punching
Hit, while the characteristics of having simple in construction, easily controllable, high gearshift control accuracy, reliable operation, can be effectively improved AMT's
Shift quality.
Brief description of the drawings
The following drawings is only intended to, in doing the utility model schematic illustration and explanation, not limit model of the present utility model
Enclose.Wherein：
Fig. 1 is the overlooking the structure diagram of the utility model embodiment；
Fig. 2 is the A-A cross section structure diagrams (gear selection mechanism schematic diagram) of the utility model embodiment；
Fig. 3 is the B-B cross section structure diagrams (gearshift schematic diagram) of the utility model embodiment；
Fig. 4 is intended to for drive range on the left of the B-B section views of the utility model embodiment；
Fig. 5 is drive range schematic diagram on the right side of the B-B section views of the utility model embodiment；
In figure：1- valve bodies；21- block selecting piston rods；22- gearshift reversal meanss；23- the first block selecting oil pockets；The block selectings of 24- second oil
Chamber；31- block selecting end caps；32- block selectings position bushing；33- block selecting locating shafts；34- block selectings position arc groove；35- block selecting locating dowels
Plug；36- block selecting piston rod axle sleeves；37- block selecting sealing rings；38- position sensors one；41- centering backing plates；42- centering screws；
43- spring bases；44- centralizing springs；51- block selectings position valve rod；52- block selecting wedge-shaped impressions；53- block selecting retaining springs；54- block selectings
Pressure limiting piston；55- block selecting pressure limiting springs；56- block selecting pressure limiting oil pockets；61- pressure-reducing valves；62- solenoid-operated proportional pressure-reducing valves；63- bis-
Three-way solenoid valve；71- range piston bars；72- gearshift axle sleeves；The gearshift oil pockets of 73- first；The gearshift oil pockets of 74- second；75-
Position sensor two；76- gearshift sealing rings；77- range piston rod sleeves；81- gearshift end caps；82- gearshift positioning bushings；83-
Gearshift locating shaft；84- gearshift positioning arc grooves；85- gearshift positioning plungers；86- gearshift positioning screws；91- gearshift positioning valve rods；
92- gearshift wedge-shaped impressions；93- gearshift retaining springs；94- gearshift pressure limiting pistons；95- gearshift pressure limiting springs；96- gearshift pressure limiting oil
Chamber.
Embodiment
With reference to the accompanying drawings and examples, the utility model is expanded on further.In the following detailed description, only by saying
Bright mode describes some one exemplary embodiments of the present utility model.Undoubtedly, one of ordinary skill in the art can be with
Recognize, can be with a variety of modes to described in the case of without departing from spirit and scope of the present utility model
Embodiment is modified.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting the protection of claim
Scope.
As shown in figure 1, a kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function, including valve body 1, it is described
Gear selection mechanism and gearshift are integrated with valve body 1, the gear selection mechanism and the gearshift are in mutually orthogonal distribution, described
Gear selection mechanism is connected with block selecting control oil circuit, and the gearshift is connected with gearshift control oil circuit；
As shown in Fig. 2 the gear selection mechanism includes the block selecting piston hole being arranged on the valve body 1, the block selecting piston
It is provided with hole on block selecting piston rod 21, the block selecting piston rod 21 and a gearshift reversal means 22 is installed, each block selecting is lived
The first block selecting oil pocket 23 and the second block selecting oil pocket 24, first block selecting are provided between the two ends of stopper rod 21 and the valve body 1
Oil pocket 23 and the second block selecting oil pocket 24 are connected with block selecting control oil circuit, and the positioning end of the block selecting piston rod 21 is passed through
The first block selecting oil pocket 23 is simultaneously connected with block selecting positioner and block selecting centralising device in turn, and the block selecting piston rod 21 is positioned
The block selecting end cap that cover is buckled on the block selecting positioner and the block selecting centralising device is installed with the valve body 1 at end
31；The block selecting positioner includes the block selecting positioning bushing 32 being arranged in the block selecting end cap 31, the block selecting piston rod
21 positioning end end is provided with the block selecting locating shaft 33 stretched into the block selecting positioning bushing 32, and the block selecting positions bushing 32
Inwall on be provided with multiple block selectings positioning arc grooves 34 be arrangeding in parallel, be provided with and the choosing on the block selecting locating shaft 33
The block selecting positioning plunger 35 that gear positioning arc groove 34 coordinates；The block selecting centralising device includes being sleeved on the block selecting locating shaft 33
On centering backing plate 41, the end of the block selecting locating shaft 33 is provided with centering screw 42, the block selecting locating shaft 33 in opposite directions
The spring base 43 pressed up against on the centering screw 42 and the centering backing plate 41 is installed, two spring bases 43 it
Between the block selecting locating shaft 33 on be set with centralizing spring 44.
As shown in Fig. 2 the block selecting piston rod 21 between the block selecting positioner and the first block selecting oil pocket 23
On block selecting shaft sealer is installed, the block selecting shaft sealer include being sleeved on the block selecting piston rod 21 and with it is described
The block selecting piston rod axle sleeve 36 that valve body 1 is fixedly connected, the inner surface setting of the block selecting piston rod axle sleeve 36 has seal groove, described
Block selecting sealing ring 37 is installed in seal groove；The choosing coordinated with the block selecting positioner is provided with the block selecting piston rod 21
Gear locking pressure limiting regulation device, the block selecting locking pressure limiting regulation device is connected with block selecting positioning plunger 35, described
Block selecting is locked pressure limiting regulation device and is connected with block selecting control oil circuit；The block selecting locking pressure limiting regulation device includes being arranged on
Block selecting positioning valve rod 51, the block selecting are installed in the block selecting valve-rod cavity in the block selecting locating shaft 33, the block selecting valve-rod cavity
The block selecting plunger hole vertical with the block selecting valve-rod cavity is provided with locating shaft 33, the block selecting positioning plunger 35 is arranged on described
In block selecting plunger hole, it is provided with the block selecting positioning valve rod 51 and positions the block selecting wedge-shaped impression that plunger 35 coordinates with the block selecting
52, the block selecting positions in the valve-rod cavity between valve rod 51 and the block selecting centralising device and is provided with block selecting retaining spring
53, the other end of the block selecting positioning valve rod 51 is connected with the block selecting pressure limiting regulation and control oil being arranged in the block selecting piston rod 21
Cylinder；The block selecting pressure limiting regulation and control oil cylinder includes the block selecting pressure limiting oil pocket 56 being arranged in the block selecting piston rod 21, the block selecting
Block selecting pressure limiting piston 54 is installed in pressure limiting oil pocket 26, is provided between the block selecting pressure limiting piston 54 and block selecting positioning valve rod 51
Block selecting pressure limiting spring 55, one end of the block selecting pressure limiting spring 55 be resisted against on the block selecting pressure limiting piston 57 and the other end against
In the end of the block selecting locating shaft 33, the block selecting pressure limiting oil pocket 56 is connected with block selecting control oil circuit.
As shown in Fig. 2 the block selecting control oil circuit includes the oil inlet P being connected with fuel tank, the oil inlet P passes through two
Solenoid-operated proportional pressure-reducing valve 62 is connected with the first block selecting oil pocket 23 and the second block selecting oil pocket 24 respectively, and the oil-feed
Mouth P passes through the block selecting pressure limiting oil pocket that pressure-reducing valve 61 and two position, three-way electromagnetic change valve 63 lock pressure limiting regulation device with the block selecting
56 connections.
As shown in figure 3, the gearshift includes the range piston hole being arranged on the valve body 1, the range piston
It is provided with hole on range piston bar 71, the range piston bar 71 and a gearshift axle sleeve 72 is installed, the range piston bar
The first gearshift oil pocket 73 and the second gearshift oil pocket 74, the first gearshift oil pocket are provided between 71 two ends and the valve body 1
73 and the second gearshift oil pocket 74 be connected with the gearshift control oil circuit, described in the positioning end of the range piston bar 71 is passed through
First gearshift oil pocket 73 is simultaneously connected with gearshift positioner, between the gearshift positioner and the first gearshift oil pocket 73
It is provided with gearshift shaft sealer, the range piston bar 71 to be provided with the range piston bar 71 and is positioned with the gearshift
The shift locking pressure limiting regulation device that device coordinates, the shift locking pressure limiting regulation device connects with the gearshift control oil circuit
Connect；Position sensor 2 75 for detecting the bit positions of range piston bar 71 is installed on the valve body 1；
As shown in figure 3, the gearshift positioner includes the gearshift end cap 81 for being fixedly mounted on the end of valve body 1, institute
The gearshift positioning bushing 82 in gearshift end cap 81 is stated, the positioning end end of the range piston bar 71, which is provided with, stretches into the gearshift
Position and be provided with multiple gearshifts be arrangeding in parallel on the gearshift locating shaft 83 in bushing 82, the inwall of the gearshift positioning bushing 82
Position to be provided with arc groove 84 and position sensor 1, the gearshift locating shaft 83 and match somebody with somebody with the gearshift positioning arc groove 84
The gearshift positioning plunger 85 of conjunction, the shift locking pressure limiting regulation device is connected with the gearshift positioning plunger 85.
As shown in figure 3, the shift locking pressure limiting regulation device includes the gearshift being arranged in the gearshift locating shaft 83
It is provided with to be provided with gearshift positioning valve rod 91, the gearshift locating shaft 83 in valve-rod cavity, the gearshift valve-rod cavity and is changed with described
The gearshift plunger hole of valve-rod cavity vertically is kept off, the gearshift positioning plunger 85 is arranged in the gearshift plunger hole, and the gearshift is fixed
The gearshift wedge-shaped impression 92 coordinated with the gearshift positioning plunger 85, the freedom of the gearshift valve-rod cavity are provided with the valve rod 91 of position
Port is provided with gearshift positioning screw 86, the valve rod between the gearshift positioning valve rod 91 and the gearshift positioning screw 86
Intracavitary is provided with gearshift retaining spring 93, and the other end of the gearshift positioning valve rod 91, which is connected with, is arranged on the range piston bar
Gearshift pressure limiting regulation and control oil cylinder in 71；
As shown in figure 3, the gearshift pressure limiting regulation and control oil cylinder includes the gearshift pressure limiting being arranged in the range piston bar 71
Chamber, the gearshift pressure limiting intracavitary is provided with gearshift pressure limiting piston 94, the gearshift pressure limiting piston 94 and gearshift positioning valve rod 91 it
Between gearshift pressure limiting spring 95 is installed, one end of the gearshift pressure limiting spring 95 is resisted against on the gearshift pressure limiting piston 94 and another
One end is resisted against the end of the gearshift locating shaft 83, and the gearshift pressure limiting oil pocket 96 is connected with the gearshift control oil circuit.
As shown in figure 3, it is described gearshift shaft sealer include be sleeved on the range piston bar 71 and with the valve body 1
The range piston rod sleeve 77 being fixedly connected, the inner surface setting of the range piston rod sleeve 77 has seal groove, the sealing
Gearshift sealing ring 76 is installed in groove.
As shown in figure 3, the gearshift control oil circuit includes the oil inlet P being connected with fuel tank, the oil inlet P passes through two
Two position, three-way electromagnetic change valve 63 distinguish it is described first gearshift oil pocket 73 with described second gearshift oil pocket 74 connect, and it is described enter
Hydraulic fluid port P passes through pressure-reducing valve 61 and the gearshift pressure limiting oil of two position, three-way electromagnetic change valve 63 and the shift locking pressure limiting regulation device
Chamber 96 is connected.
As shown in figure 3, being provided with rack and pinion drive between the gearshift axle sleeve 72 and the gearshift reversal means 22.Institute
State the driving cog that rack and pinion drive includes being arranged between the gearshift axle sleeve 72 and the gearshift reversal means 22, the tooth
The concrete structure of wheel rack gearing belongs to prior art, repeats no more here.
Operation principle of the present utility model is explained further with reference to Fig. 2 to Fig. 5：
1) block selecting works
As shown in Fig. 2 solenoid-operated proportional pressure-reducing valve 62 controls the oil of the first block selecting oil pocket 23 and the second block selecting oil pocket 24 respectively
Pressure, the block selecting position of control block selecting piston rod 21, and pass through the block selecting position of the detection piston rod 21 of position sensor 1.Fig. 2
In, block selecting piston rod 21 is in interposition, and two position, three-way electromagnetic change valve 63 is in left working position, block selecting pressure limiting oil pocket 56 and oil
Case is connected, and block selecting positions plunger 35 and positioned in block selecting under valve rod 51, the promotion of block selecting retaining spring 53, is caught in block selecting positioning bushing
In 32 middle block selecting positioning arc groove 34, realize that position is positioned, the position of the detection block selecting of position sensor 1 piston rod 21.
In this case, left side gear or the selection of right side gear are carried out, the course of work is as follows：
Two position, three-way electromagnetic change valve 63 is transformed into right working position, oil inlet P is connected with block selecting pressure limiting oil pocket 56, is subtracting
Under the Stress control of pressure valve 61, block selecting pressure limiting piston 54 is promoted to left movement, promotes block selecting positioning valve rod 51 to make block selecting locating dowel
Plug 35 enters the groove that block selecting positions valve rod 51, and the middle block selecting that the block selecting positioning plunger 35 departs from block selecting positioning bushing 32 is determined
Position arc groove 34；Two solenoid-operated proportional pressure-reducing valves 62 control the oil pressure of the first block selecting oil pocket 23 and the second block selecting oil pocket 24 respectively,
Overcome the spring force of block selecting centralizing spring 44, promote block selecting piston rod 21 to move to both sides gear positions to the left or to the right, keep
The stress balance of block selecting piston rod 21, gear positions residing for the detection piston rod 21 of position sensor 1；By two-position three-way electromagnetic
Reversal valve 63 is transformed into left working position, under the promotion of block selecting retaining spring 53, and block selecting positioning valve rod 51 promotes block selecting locating dowel
Plug 35 is snapped onto in the both sides block selecting positioning arc groove 34 of block selecting positioning bushing 32, is realized that block selecting position is positioned, is completed block selecting.
2) shift gears
As shown in figure 3, range piston bar 71 is in interposition.The two-position three-way electromagnetic connected with gearshift pressure limiting oil pocket 96 is changed
Left working position is in valve 63, gearshift positioning plunger 85 is caught under gearshift positioning valve rod 91, the promotion for retaining spring 93 of shifting gears
In the middle of gearshift positioning bushing 82 in gearshift positioning arc groove 84, during the detection range piston of position sensor 2 75 bar 71 is in
Position, is now neutral position state.In this case, in two two connected with the first gearshift gearshift oil pocket 74 of oil pocket 73 and second
Under the control of three-way solenoid valve 63, range piston bar 71 is moved to the left or to the right, position is put into gear in left side and right side is put into gear
Position, then axle sleeve 72 of shifting gears drives selector fork to swing realization to the right or to the left and put into gear, as shown in Figure 4 and Figure 5.
In shift process, control to be in right work with the two position, three-way electromagnetic change valve 63 that gearshift pressure limiting oil pocket 96 is connected
Position, by the pressure size of pressure-reducing valve 61 and the control gearshift pressure limiting of corresponding two position, three-way electromagnetic change valve 63 oil pocket 96, is promoted
Gearshift positioning valve rod 91, makes gearshift position the gearshift positioning arc groove 84 that plunger 85 departs from gearshift positioning bushing 82, reaches gear
During the position of position, corresponding two position, three-way electromagnetic change valve 63 is controlled to be in left working position, gearshift retaining spring 93 and gearshift are positioned
Valve rod 91 promotes gearshift positioning plunger 85 to be caught in the gearshift positioning arc groove 84 of gearshift positioning bushing 82, completes gearshift positioning.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (10)
1. a kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function, including valve body, it is characterised in that：The valve
Gear selection mechanism and gearshift are integrated with body, the gear selection mechanism is connected with block selecting control oil circuit, the gearshift connection
There is gearshift control oil circuit；
The gear selection mechanism includes being provided with block selecting work in the block selecting piston hole being arranged on the valve body, the block selecting piston hole
One gearshift reversal means is installed on stopper rod, the block selecting piston rod, set between the two ends of the block selecting piston rod and the valve body
It is equipped with the first block selecting oil pocket and the second block selecting oil pocket, the first block selecting oil pocket and the second block selecting oil pocket and the block selecting control
Liquefaction road is connected, and the positioning end of the block selecting piston rod passes through the first block selecting oil pocket and is connected with block selecting positioner in turn
With block selecting centralising device, it is provided with the block selecting piston rod between the block selecting positioner and the first block selecting oil pocket
Block selecting shaft sealer；The block selecting locking pressure limiting regulation and control coordinated with the block selecting positioner are provided with the block selecting piston rod
Device, the block selecting locking pressure limiting regulation device is connected with block selecting control oil circuit；
The gearshift includes being provided with gearshift work in the range piston hole being arranged on the valve body, the range piston hole
One gearshift axle sleeve is installed on stopper rod, the range piston bar, set between the two ends of the range piston bar and the valve body
The first gearshift oil pocket and the second gearshift oil pocket are equipped with, the first gearshift oil pocket and the second gearshift oil pocket are controlled with the gearshift
Liquefaction road is connected, and the positioning end of the range piston bar passes through the described first gearshift oil pocket and is connected with gearshift positioner, institute
State and gearshift shaft sealer, institute are installed on the range piston bar between gearshift positioner and the first gearshift oil pocket
State the shift locking pressure limiting regulation device for being provided with and coordinating with the gearshift positioner in range piston bar, the shift locking
Pressure limiting regulation device is connected with the gearshift control oil circuit；It is provided with the valve body for detecting the range piston bar middle position
The position sensor two of position；
Rack and pinion drive is provided between the gearshift axle sleeve and the gearshift reversal means.
2. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 1, it is characterised in that：Institute
It is in mutually orthogonal distribution to state gear selection mechanism and the gearshift.
3. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 1, it is characterised in that：Institute
Stating block selecting control oil circuit includes the oil inlet P that is connected with fuel tank, the oil inlet P by two solenoid-operated proportional pressure-reducing valves respectively with
The first block selecting oil pocket is connected with the second block selecting oil pocket, and the oil inlet P passes through pressure-reducing valve and two-position three way electricity
The block selecting pressure limiting oil pocket that magnetic reversal valve locks pressure limiting regulation device with the block selecting is connected.
4. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 1, it is characterised in that：Institute
Cover is installed on the valve body for stating block selecting piston rod positioning end and is buckled in the block selecting positioner and the block selecting centralising device
On block selecting end cap；
The block selecting positioner includes the block selecting positioning bushing being arranged in the block selecting end cap, and the block selecting piston rod is determined
Position end end is provided with the block selecting locating shaft stretched into the block selecting positioning bushing, the inwall of the block selecting positioning bushing and set
Have and be provided with and the block selecting on multiple block selecting positioning arc grooves and position sensor one be arrangeding in parallel, the block selecting locating shaft
The block selecting positioning plunger that arc groove coordinates is positioned, the block selecting locking pressure limiting regulation device connects with block selecting positioning plunger driving
Connect；
The block selecting centralising device includes the centering backing plate being sleeved on the block selecting locating shaft, the end of the block selecting locating shaft
Opposite be provided with is installed on centering screw, the block selecting locating shaft and presses up against the centering screw and the centering backing plate
On spring base, be set with centralizing spring on the block selecting locating shaft between two spring bases.
5. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 1, it is characterised in that：Institute
State the block selecting piston rod that block selecting shaft sealer includes being sleeved on the block selecting piston rod and being fixedly connected with the valve body
Set, the inner surface setting of the block selecting piston rod axle sleeve, which has in seal groove, the seal groove, is provided with block selecting sealing ring.
6. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 4, it is characterised in that：Institute
State in the block selecting valve-rod cavity that block selecting locking pressure limiting regulation device includes being arranged in the block selecting locating shaft, the block selecting valve-rod cavity
It is provided with block selecting positioning valve rod, the block selecting locating shaft and is provided with the block selecting plunger hole vertical with the block selecting valve-rod cavity, institute
State block selecting positioning plunger to be arranged in the block selecting plunger hole, be provided with and the block selecting locating dowel on the block selecting positioning valve rod
Fill in and installed in the block selecting wedge-shaped impression coordinated, the valve-rod cavity between the block selecting positioning valve rod and the block selecting centralising device
There is block selecting retaining spring, the other end of the block selecting positioning valve rod is connected with the block selecting pressure limiting being arranged in the block selecting piston rod
Regulate and control oil cylinder；
The block selecting pressure limiting regulation and control oil cylinder includes the block selecting pressure limiting oil pocket being arranged in the block selecting piston rod, the block selecting pressure limiting
Block selecting pressure limiting piston is installed in oil pocket, block selecting pressure limiting bullet is installed between the block selecting pressure limiting piston and block selecting positioning valve rod
Spring, one end of the block selecting pressure limiting spring is resisted against on the block selecting pressure limiting piston and the other end is resisted against the block selecting locating shaft
End, the block selecting pressure limiting oil pocket and the block selecting control oil circuit is connected.
7. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 1, it is characterised in that：Institute
The oil inlet P that gearshift control oil circuit includes being connected with fuel tank is stated, the oil inlet P passes through two two position, three-way electromagnetic change valves point
Do not connected with the described first gearshift oil pocket and the second gearshift oil pocket, and the oil inlet P passes through pressure-reducing valve and two three
Electric change valve is connected with the gearshift pressure limiting oil pocket of the shift locking pressure limiting regulation device.
8. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 1, it is characterised in that：Institute
State to be provided with to shift gears in the gearshift end cap that gearshift positioner includes being fixedly mounted on the valve end, the gearshift end cap and determine
Position bushing, the positioning end end of the range piston bar is provided with the gearshift locating shaft stretched into the gearshift positioning bushing, institute
It is provided with multiple gearshift positioning arc grooves be arrangeding in parallel, the gearshift locating shaft and installs on the inwall for stating gearshift positioning bushing
There is the gearshift coordinated with the gearshift positioning arc groove to position plunger, the shift locking pressure limiting regulation device and the gearshift are fixed
Position plunger driving connection.
9. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 8, it is characterised in that：Institute
State in the gearshift valve-rod cavity that shift locking pressure limiting regulation device includes being arranged in the gearshift locating shaft, the gearshift valve-rod cavity
It is provided with gearshift positioning valve rod, the gearshift locating shaft and is provided with the gearshift plunger hole vertical with the gearshift valve-rod cavity, institute
State gearshift positioning plunger to be arranged in the gearshift plunger hole, be provided with and the gearshift locating dowel on the gearshift positioning valve rod
The gearshift wedge-shaped impression coordinated is filled in, the free port of the gearshift valve-rod cavity is provided with gearshift positioning screw, the gearshift positioning
Gearshift retaining spring is installed in the valve-rod cavity between valve rod and the gearshift positioning screw, the gearshift positioning valve rod
The other end is connected with the gearshift pressure limiting regulation and control oil cylinder being arranged in the range piston bar；
The gearshift pressure limiting regulation and control oil cylinder includes the gearshift pressure limiting chamber being arranged in the range piston bar, the gearshift pressure limiting chamber
Gearshift pressure limiting piston is inside installed, gearshift pressure limiting spring, institute are installed between the gearshift pressure limiting piston and gearshift positioning valve rod
State gearshift pressure limiting spring one end be resisted against it is described gearshift pressure limiting piston on and the other end be resisted against it is described gearshift locating shaft end
Portion, the gearshift pressure limiting oil pocket is connected with the gearshift control oil circuit.
10. there is the AMT shifting hydraulic actuating mechanisms of pressure limiting positioning function as claimed in claim 1, it is characterised in that：Institute
State the range piston bar axle that gearshift shaft sealer includes being sleeved on the range piston bar and being fixedly connected with the valve body
Set, the inner surface setting of the range piston rod sleeve, which has in seal groove, the seal groove, is provided with gearshift sealing ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720083314.1U CN206449188U (en) | 2017-01-22 | 2017-01-22 | A kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720083314.1U CN206449188U (en) | 2017-01-22 | 2017-01-22 | A kind of AMT shifting hydraulic actuating mechanisms with pressure limiting positioning function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763720A (en) * | 2017-01-22 | 2017-05-31 | 山东海卓电液控制工程技术研究院 | A kind of AMT shifting hydraulic executing systems with pressure limiting positioning function |
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2017
- 2017-01-22 CN CN201720083314.1U patent/CN206449188U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763720A (en) * | 2017-01-22 | 2017-05-31 | 山东海卓电液控制工程技术研究院 | A kind of AMT shifting hydraulic executing systems with pressure limiting positioning function |
| CN106763720B (en) * | 2017-01-22 | 2018-08-21 | 山东海卓电液控制工程技术研究院 | A kind of AMT shifting hydraulic executing systems with pressure limiting positioning function |
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