CN206668949U - A kind of gearshift for transfer gear - Google Patents
A kind of gearshift for transfer gear Download PDFInfo
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- CN206668949U CN206668949U CN201720300224.3U CN201720300224U CN206668949U CN 206668949 U CN206668949 U CN 206668949U CN 201720300224 U CN201720300224 U CN 201720300224U CN 206668949 U CN206668949 U CN 206668949U
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- cylinder
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- piston
- gearshift
- transfer gear
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Abstract
It the utility model is related to system of vehicle transmission field, specifically a kind of gearshift for transfer gear.The shifting shaft for being respectively cooperating with being arranged in the first cylinder and the second cylinder including the first cylinder, the second cylinder and both ends, the middle part of shifting shaft is provided with selector fork, selector fork by shifting shaft, shifted gears by the caused axial displacement under the first cylinder and the second cylinder action, the longitudinal section of first cylinder is convex, the first valve and the second valve are provided with the first cylinder, the self-locking mechanism that shifting shaft is fixed after terminating on the second cylinder provided with the 3rd valve and gearshift.The utility model coordinates crawls by three valves and two cylinders, makes shifting shaft drive selector fork to be shifted gears, and is not easy out of supply when being travelled caused by seal damages, and the operating of transfer gear internal gear is influenceed, so as to improve driving safety performance.Equally, the magnetic valve for avoiding control from originating from causes coil heating because being electrified for a long time, so as to add service life.
Description
Technical field
It the utility model is related to system of vehicle transmission field, specifically a kind of gearshift for transfer gear.
Background technology
As the vehicles such as heavy-duty off-road vehicle, load-carrying vehicle, caravan develop, dynamic property, load to vehicle etc. are all increasingly
It is high.Often design uses transfer gear in vehicle transmission system, and the function of transfer gear is that the power of speed changer output is assigned into each drive
Dynamic bridge, and also can further increase moment of torsion according to demand.Transfer gear typically uses Dual-speed-ratio, can improve vehicle speed, load
Energy.As critical component of the speed than switching, its performance determines the reliability of transfer gear, used gearshift to a certain extent
Life-span.Gearshift mode generally can be divided into manipulator dynamic formula, electrical-control hydraulic, electric-controlled pneumatic type.In vehicle, pneumatic type gearshift dress
Put and gear positions are typically locked using Continuous aeration.Weak point existing for such a gearshift：First, Continuous aeration is to close
The pressure-resistant seal performance of sealing requires high, easily causes seal fails, out of supply when seal fails may cause traveling,
Influence the operating of transfer gear internal gear, driving safety performance；Second, solenoid valve control source of the gas break-make, magnetic valve be electrified for a long time by
Cause coil heating, reduction of service life.
Utility model content
The utility model aims to provide a kind of pressure that can be reduced on seal and magnetic valve, improves security and use
The transfer gear gearshift of the point dynamic formula in life-span.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of gearshift for transfer gear
Device, including the first cylinder being oppositely arranged and the second cylinder and both ends are respectively cooperating with being arranged on the first cylinder and the second cylinder
In shifting shaft, the middle part of shifting shaft is provided with selector fork, and selector fork is made by shifting shaft in the first cylinder and the second cylinder
Shifted gears with lower caused axial displacement, the longitudinal section of first cylinder inner cavity is convex, and the small end of convex is towards the
Two cylinders, it is located at one end in the first cylinder in shifting shaft and is fixed with piston plate and piston inner sleeve, can be slided on set in piston
Dynamic to be provided with piston jacket, the reduced diameter section of the wherein outer rim of piston plate and the first cylinder, which coordinates, to be installed, the outer rim of piston inner sleeve and
The inner edge of piston jacket coordinates installation, and piston jacket is step-like, and the enlarged diameter section of its part outer rim and the first cylinder, which coordinates, pacifies
The reduced diameter section of dress, remainder outer rim and the first cylinder, which coordinates, to be installed, and positioned at the small straight of the first cylinder on piston jacket
One end of footpath section is set to limit the baffle plate of displacement between piston inner sleeve and piston jacket, is provided with and piston inner sleeve on the first cylinder
Be engaged with piston jacket the first valve for axially promoting shifting shaft towards the second cylinder direction and with piston plate and piston
The baffle plate put outside is engaged the second valve made in shifting shaft time, is provided with shifting shaft the first cylinder of direction on the second cylinder
The self-locking mechanism that shifting shaft is fixed after terminating for the 3rd valve and gearshift that direction axially promotes.
Preferably, second cylinder is provided with the screwed hole perpendicular to shifting shaft, and the self-locking mechanism includes being arranged on
Adjustment screw in the screwed hole, it is arranged at the spring of adjustment screw small end, is arranged on spring close to the steel of shifting shaft one end
Ball and three hemispherical grooves for being opened on shifting shaft and being engaged with the steel ball vertically.
Preferably, the depth of the hemispherical groove is 3.5-4mm, radius 4.7-5.3mm, and two neighboring hemispherical is recessed
The centre-to-centre spacing of groove is 0.9-1.1mm.
Preferably, the gearshift includes an indicating mechanism, and the indicating mechanism is vertical vertically solid including two
The indicator lamp for the open type being scheduled on second cylinder, two indicator lamps are respectively equipped with the steel column shape perpendicular to the shifting shaft
Telescoping switch, be provided with the chute coordinated with two telescoping switch vertically on shifting shaft, the telescoping switch bottom is located at
When in chute, corresponding indicator lamp is normally opened, when telescoping switch bottom is located at shifting shaft outer wall with shifting shaft movement, corresponding instruction
Lamp is closed.
Preferably, the self-locking mechanism and indicating mechanism are vertically arranged.
Preferably, the end that first cylinder and the second cylinder are located remotely from each other has been bolted the first end cap respectively
With the second end cap, first valve is arranged on first end and covered, and the 3rd valve is arranged on the second end cap.
Preferably, the inner edge of piston plate and the piston inner sleeve is described respectively by O-ring seals and shifting shaft static seal
Between the reduced diameter section of the outer rim of piston plate and the first cylinder, outside the outer rim of piston inner sleeve and the inner edge of piston jacket and piston
Pass through O-ring seals dynamic sealing between set and the enlarged diameter section of the first cylinder.
Preferably, the end that the shifting shaft is located in the first cylinder is provided with stop nut.
Preferably, the selector fork is fixed by two positioning screws with shifting shaft, is passed through between two positioning screws
Twist into the wire loop fastening of 8-shaped.
Preferably, first cylinder and the second cylinder and transfer casing are integral type.
Beneficial effect
The utility model coordinates crawl by three valves and two cylinders, makes both ends respectively within two cylinders
Shifting shaft drives the selector fork being fixed in the middle part of it to be shifted gears, and gearshift can stop air inlet after terminating.Point dynamic formula gearshift pair
The pressure-resistant seal performance of seal requires relatively low, is not easy out of supply when being travelled caused by seal damages, and influences transfer gear inner teeth
Wheel operating, so as to improve driving safety performance.Equally, the magnetic valve for avoiding control from originating from causes coil because being electrified for a long time
Heating, so as to add service life.
Self-locking device of the present utility model can fix shifting shaft after completing to shift gears, so as to further avoid traveling
When it is out of supply or transfer the files, improve the reliability of gearshift.
Brief description of the drawings
Fig. 1 is cross-sectional view of the present utility model；
Fig. 2 is A-A in Fig. 1 to partial cutaway schematic；
Marked in figure：1st, the first cylinder, the 2, second cylinder, 3, shifting shaft, 4, selector fork, 5, piston plate, 6, in piston
Set, 7, piston jacket, the 8, first valve, the 9, second valve, the 10, the 3rd valve, 11, self-locking mechanism, 1101, adjustment screw,
1102nd, spring, 1103, steel ball, 1104, hemispherical groove, 12, indicating mechanism, 1201, indicator lamp, 1202, telescoping switch,
1203rd, chute, the 13, first end cap, the 14, second end cap, 15, stop nut, 16, positioning screw, 17, wire loop, 18, transfer case
Body.
Embodiment
As shown in Figures 1 and 2, a kind of gearshift for transfer gear of the present utility model, including with transfer casing 18
The first cylinder 1 and the second cylinder 2 and a shifting shaft 3 being integrated.First cylinder 1 and the second cylinder 2 are oppositely arranged, gearshift
The both ends of axle 3 coordinate with the first cylinder 1 and the second cylinder 2 respectively installs, the middle part of shifting shaft 3 by two positioning screws 16 with
Selector fork 4 is fixed with, is fastened between two positioning screws 16 by twisting into the wire loop 17 of 8-shaped.Pass through the He of the first cylinder 1
The pneumatic action of second cylinder 2, shifting shaft 3 is produced axial movement, then drive selector fork 4 to complete gearshift.This practicality is new
The gearshift of type also includes a self-locking mechanism 11 and an indicating mechanism 12.Self-locking mechanism 11 is used to terminate in each gearshift
Shifting shaft 3 is fixed afterwards, realizes pneumatic point dynamic formula gearshift, is not easy out of supply when being travelled caused by seal damages, influences transfer gear
Internal gear operates, so as to improve driving safety performance.Equally, the magnetic valve for avoiding control from originating from is led because being electrified for a long time
Induced coil generates heat, so as to add service life.Indicating mechanism 12 is used for the gear residing for real-time display the utility model.
The longitudinal section of the inner chamber of first cylinder 1 of the present utility model is convex, and the small end of convex is set towards the second cylinder 2
Put, being located at one end in the first cylinder 1 in shifting shaft 3 is fixed with piston plate 5 and piston inner sleeve 6, can be slided in piston inner sleeve 6
Dynamic to be provided with piston jacket 7, the reduced diameter section of the wherein outer rim of piston plate 5 and the first cylinder 1, which coordinates, to be installed, outside piston inner sleeve 6
The inner edge of edge and piston jacket 7, which coordinates, installs, and piston jacket 7 is step-like, its part outer rim and the enlarged diameter section of the first cylinder 1
Coordinate installation, remainder outer rim and the reduced diameter section of the first cylinder 1 coordinate installation, and are located at the first gas on piston jacket 7
One end of the reduced diameter section of cylinder 1 is set to limit the baffle plate of displacement between piston inner sleeve 6 and piston jacket 7.In piston plate 5 and piston
The inner edge of set 6 respectively by O-ring seals and the static seal of shifting shaft 3, the outer rim of the piston plate 5 and the first cylinder 1 it is small directly
Between the section of footpath, the enlarged diameter section of the inner edge of the outer rim of piston inner sleeve 6 and piston jacket 7 and the cylinder 1 of piston jacket 7 and first it
Between pass through O-ring seals dynamic sealing.It is provided with the first cylinder 1 and is engaged with piston inner sleeve 6 and piston jacket 7 by shifting shaft
3 the first valves 8 axially promoted towards the second cylinder 2 directions and being engaged with the baffle plate on piston plate 5 and piston jacket 7 make
Shifting shaft 3 return in the second valve 9, be provided with the second cylinder 2 and axially promote shifting shaft 3 towards the direction of the first cylinder 1
The self-locking mechanism 11 that shifting shaft 3 is fixed after terminating for 3rd valve 10 and gearshift.The He of first cylinder 1 of the present utility model
The end that second cylinder 2 is located remotely from each other has been bolted the first end cap 13 and the second end cap 14, first valve 8 respectively
It is arranged on the first end cap 13, the 3rd valve 10 is arranged on the second end cap 14.Shifting shaft 3 of the present utility model is positioned at the
End in one cylinder 1 is provided with stop nut 15, can effectively limit the axial displacement of shifting shaft 3, reduces shift shock and changes
Gear shift fork 4 wears, and improves the reliability of gearshift.
Second cylinder 2 of the present utility model is provided with the screwed hole perpendicular to shifting shaft 3, and self-locking mechanism 11 includes being arranged on
Adjustment screw 1101 in the screwed hole, the spring 1102 of the adjustment small end of screw 1101 is arranged at, is arranged on spring 1102 and leans on
The steel ball 1103 of nearly one end of shifting shaft 3 and be opened on shifting shaft 3 and be engaged with the steel ball 1103 vertically three
Hemispherical groove 1104.Preferably, the depth of hemispherical groove 1104 is 3.5-4mm, radius 4.7-5.3mm, two neighboring
The centre-to-centre spacing of hemispherical groove 1104 is 0.9-1.1mm.Indicating mechanism 12 of the present utility model is vertically arranged with self-locking mechanism 11,
Include the indicator lamp 1201 of two open types being vertically fixed on vertically on second cylinder 2, two indicator lamps 1201 divide
It She You not vertically be provided with shifting shaft 3 and stretched with two perpendicular to the telescoping switch 1202 of the steel column shape of the shifting shaft 3
The chute 1203 that switch 1202 coordinates, when the bottom of telescoping switch 1202 is located in chute 1203, corresponding indicator lamp 1201
Normally opened, when the bottom of telescoping switch 1202 is located at 3 outer wall of shifting shaft with the movement of shifting shaft 3, corresponding indicator lamp 1201 is closed.
As shown in figure 1, in specific implementation process of the present utility model, when by the second 9 air inlet of valve, compressed air pushes away
Baffle plate on piston overcoat 7 pushes up to the first end cap 13 to the left, promotes piston plate 5 to move right until the top of piston inner sleeve 6 is arrived and lived
Baffle plate on set 7 beyond the Great Wall, the now drive of shifting shaft 3 selector fork 4 are moved to middle gear position, and steel ball 1103 is in spring 1102
It is embedded under effect in middle hemispherical groove 1104, realizes gear self-locking.The telescoping switch of two indicator lamps 1201
1202 are respectively positioned in chute 1203, are to light state.
During by the first 8 air inlet of valve, compressed air promotes enlarged diameter section and minor diameter in the cylinder of piston jacket 7 to the first 1
At the step at end, then compressed air continues to press on piston inner sleeve 6 and moved right until piston inner sleeve 6 is pushed up on piston jacket 7
Baffle plate, now shifting shaft 3 drive selector fork 4 be moved to right file location, steel ball 1103 is embedded into one and half positioned at left side
In ball recess 1104, gear self-locking is realized.It is located at the outer of shifting shaft 3 positioned at the telescoping switch 1202 of the indicator lamp 1201 of left
On wall, it is closed, the telescoping switch 1202 positioned at the indicator lamp 1201 of right is located in chute 1203, in lighting shape
State.
During by the 3rd 10 air inlet of valve, compressed air promotes shifting shaft 3 to be moved to the left until stop nut 15 is pushed up to first
End cap 13, steel ball 1103 are embedded in a hemispherical groove 1104 on right side, realize gear self-locking.Indicator lamp positioned at left
1201 telescoping switch 1202 is located in chute 1203, in state is lighted, positioned at the telescoping switch of the indicator lamp 1201 of right
1202 on the outer wall of shifting shaft 3, are closed.
Claims (10)
- A kind of 1. gearshift for transfer gear, it is characterised in that：Including the first cylinder being oppositely arranged（1）With the second cylinder （2）And both ends are respectively cooperating with being arranged on the first cylinder（1）With the second cylinder（2）In shifting shaft（3）, shifting shaft（3）In Portion is provided with selector fork（4）, selector fork（4）Pass through shifting shaft（3）In the first cylinder（1）With the second cylinder（2）Effect is lower to produce Raw axial displacement is shifted gears, first cylinder（1）The longitudinal section of inner chamber is convex, and the small end of convex is towards the second gas Cylinder（2）, in shifting shaft（3）Positioned at the first cylinder（1）Interior one end is fixed with piston plate（5）With piston inner sleeve（6）, in piston Inner sleeve（6）On be slidably provided with piston jacket（7）, wherein piston plate（5）Outer rim and the first cylinder（1）Reduced diameter section coordinate Installation, piston inner sleeve（6）Outer rim and piston jacket（7）Inner edge coordinate installation, piston jacket（7）To be step-like, its part Outer rim and the first cylinder（1）Enlarged diameter section coordinate installation, remainder outer rim and the first cylinder（1）Reduced diameter section coordinate peace Dress, and in piston jacket（7）It is upper to be located at the first cylinder（1）Reduced diameter section one end be set to limit piston inner sleeve（6）And piston Overcoat（7）Between displacement baffle plate, in the first cylinder（1）It is provided with and piston inner sleeve（6）And piston jacket（7）Being engaged to change Gear shaft（3）Towards the second cylinder（2）The first valve that direction axially promotes（8）And and piston plate（5）And piston jacket（7）On Baffle plate be engaged and make shifting shaft（3）The second valve in returning（9）, in the second cylinder（2）It is provided with shifting shaft（3）Towards the One cylinder（1）The 3rd valve that direction axially promotes（10）And gearshift terminate after to shifting shaft（3）Be fixed from lock machine Structure（11）.
- A kind of 2. gearshift for transfer gear according to claim 1, it is characterised in that：Second cylinder（2） It is provided with perpendicular to shifting shaft（3）Screwed hole, the self-locking mechanism（11）Including the adjustment screw in the screwed hole （1101）, it is arranged at adjustment screw（1101）The spring of small end（1102）, be arranged at spring（1102）Upper close shifting shaft（3）One The steel ball at end（1103）And shifting shaft is opened in vertically（3）It is upper and with the steel ball（1103）Three hemisphericals being engaged Groove（1104）.
- A kind of 3. gearshift for transfer gear according to claim 2, it is characterised in that：The hemispherical groove （1104）Depth be 3.5-4mm, radius 4.7-5.3mm, two neighboring hemispherical groove（1104）Centre-to-centre spacing be 0.9- 1.1mm。
- A kind of 4. gearshift for transfer gear according to claim 2, it is characterised in that：The gearshift includes One indicating mechanism（12）, the indicating mechanism（12）Second cylinder is vertically fixed on vertically including two（2）On The indicator lamp of open type（1201）, two indicator lamps（1201）It is respectively equipped with perpendicular to the shifting shaft（3）Steel column shape stretch Contracting switch（1202）, in shifting shaft（3）On vertically be provided with and two telescoping switch（1202）The chute of cooperation（1203）, it is described Telescoping switch（1202）Bottom is located at chute（1203）When interior, corresponding indicator lamp（1201）It is normally opened, telescoping switch（1202）Bottom Portion is with shifting shaft（3）Movement is located at shifting shaft（3）During outer wall, corresponding indicator lamp（1201）Close.
- A kind of 5. gearshift for transfer gear according to claim 4, it is characterised in that：The self-locking mechanism（11） And indicating mechanism（12）It is vertically arranged.
- A kind of 6. gearshift for transfer gear according to claim 1, it is characterised in that：First cylinder（1） With the second cylinder（2）The end being located remotely from each other has been bolted the first end cap respectively（13）With the second end cap（14）, it is described First valve（8）It is arranged on the first end cap（13）On, the 3rd valve（10）It is arranged on the second end cap（14）On.
- A kind of 7. gearshift for transfer gear according to claim 1, it is characterised in that：The piston plate（5）With Piston inner sleeve（6）Inner edge pass through O-ring seals and shifting shaft respectively（3）Static seal, the piston plate（5）Outer rim and first Cylinder（1）Reduced diameter section between, piston inner sleeve（6）Outer rim and piston jacket（7）Inner edge and piston jacket（7）With One cylinder（1）Enlarged diameter section between pass through O-ring seals dynamic sealing.
- A kind of 8. gearshift for transfer gear according to claim 1, it is characterised in that：The shifting shaft（3）Position In the first cylinder（1）In end be provided with stop nut（15）.
- A kind of 9. gearshift for transfer gear according to claim 1, it is characterised in that：The selector fork（4） Pass through two positioning screws（16）With shifting shaft（3）It is fixed, two positioning screws（16）Between by twisting into the wire loop of 8-shaped （17）Fastening.
- A kind of 10. gearshift for transfer gear according to claim 1, it is characterised in that：First cylinder（1） With the second cylinder（2）With transfer casing（18）For integral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720300224.3U CN206668949U (en) | 2017-03-27 | 2017-03-27 | A kind of gearshift for transfer gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720300224.3U CN206668949U (en) | 2017-03-27 | 2017-03-27 | A kind of gearshift for transfer gear |
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| Publication Number | Publication Date |
|---|---|
| CN206668949U true CN206668949U (en) | 2017-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720300224.3U Active CN206668949U (en) | 2017-03-27 | 2017-03-27 | A kind of gearshift for transfer gear |
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| CN (1) | CN206668949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413023A (en) * | 2018-05-14 | 2018-08-17 | 安徽合力股份有限公司 | A kind of adjustment mechanism for fork truck shift lever axial gap |
| CN114060506A (en) * | 2021-10-29 | 2022-02-18 | 东风越野车有限公司 | Intelligent electric control pneumatic type transfer case operating mechanism and method |
-
2017
- 2017-03-27 CN CN201720300224.3U patent/CN206668949U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413023A (en) * | 2018-05-14 | 2018-08-17 | 安徽合力股份有限公司 | A kind of adjustment mechanism for fork truck shift lever axial gap |
| CN114060506A (en) * | 2021-10-29 | 2022-02-18 | 东风越野车有限公司 | Intelligent electric control pneumatic type transfer case operating mechanism and method |
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