A kind of executing agency for automatically switching transfer gear box
Technical field
The utility model belongs to onboard accessory technical field, and in particular to a kind of execution machine for automatically switching transfer gear box
Structure.
Background technique
Transfer case is the device for being allocated the power of engine, can output power to rear axle, or defeated simultaneously
Front axle and rear axle are arrived out.Automobile with transfer case, is all that power is first transmitted to transfer case by transmission shaft, then by transfer case come into
Action edge distribution, be transmitted to front axle and rear axle respectively, and can switch between rear-guard and 4 wheel driven, use more send firmly it is cross-country
Che Shang.
With the high speed development of electronic technology, it is accurate that the switching of transfer case working condition needs a electric actuator
It completes.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of executing agency for automatically switching transfer gear box, energy
Enough it is automatically performed the switching of transfer gear box.
In order to solve the above technical problems, the technical solution of the utility model is: designing a kind of automatic switchover transfer gear box
Executing agency, including shell, it is characterised in that: first motor is set in the shell, the motor axis connection of first motor the
One speed reducer, output end connection the first driving gear of the first retarder, the first driving gear connect the first rack gear, the first rack gear
It is provided on the first output shaft, the first output shaft stretches out outside shell;First retarder is also connected with first position sensor, and first passes
Control signal of the signal of sensor as first motor on/off;
Also set up the second motor in the shell, the second retarder of motor axis connection of the second motor, the second retarder
Output end connection the second driving gear, the second driving gear connect the second rack gear, and the second rack gear is provided on the second output shaft, the
Two output shafts stretch out outside shell;Second retarder is also connected with second position sensor, and the signal of second sensor is as the second electricity
The control signal of electromechanical source on-off;
The power switch of the second motor is further fixed in the shell, the rotation of the first driving gear can control power supply and open
The on-off of pass.
Preferably, first retarder and the second retarder include reducing gear train, the whole grade tooth of reducing gear train
Wheel connects respective driving gear, and reducing gear train connects respective positions sensor.
Preferably, the linkage tooth being immobilized in the shell is respectively provided in the first position sensor and second position sensor
Wheel seat, linkage gear is installed on linkage gear seat, and linkage gear connects respective reducing gear train, is arranged on linkage gear seat and leads
Brush is arranged on linkage gear in electric slideway, and brush can contact on conductive slideway.
Preferably, the linkage tooth being immobilized in the shell is respectively provided in the first position sensor and second position sensor
Wheel seat, installs linkage gear on linkage gear seat, and linkage gear connects respective reducing gear train, on linkage gear seat it is fixed suddenly
Your sensor fixes magnet ring on the wheel shaft of linkage gear, convex block is arranged on magnet ring, Hall sensor detects the position of convex block.
Preferably, the magnet ring includes the first magnet ring and the second magnet ring, and slot or setting convex block are opened up on the first magnet ring,
The second magnet ring, the polarity of the second magnet ring and the first magnet ring are inserted on slot or convex block on the contrary, Hall sensor detects convex block
Position signal.
Preferably, first retarder and the second retarder further include the upper scroll bar for being mounted on respective motor shaft, snail
Turbine is equipped on bar, turbine drives reducing gear train.
Preferably, dynamic cushioning device is arranged in the reducing gear train.
Preferably, the dynamic cushioning device includes fixing axle, installs intermediate gear, spiral spring mounting rack and end in fixing axle
Grade gear, is arranged wiper arm on spiral spring mounting rack, spiral spring is installed on spiral spring mounting rack, the inner end of spiral spring is fixed on spiral spring mounting rack
On, gear mounting rack is fixed on intermediate gear, the dog of wiper arm is stretched in setting on gear mounting rack, and whole grade is installed on whole grade gear
Gear stand, shift fork is arranged on whole grade gear stand, and shift fork connects the outer end of spiral spring.
Preferably, the whole grade gear is same gear mass or different gear masses from respective driving gear.
Preferably, the power switch is pressure touching switch, and cam is fixed on the first driving gear, and cam can touch pressure touching and open
It closes.
Compared with prior art, the utility model has the beneficial effects that
1, due to the stretching state using first motor the first output shaft of control, the shape of second the second output shaft of motor control
State, and the second motor is limited by the first output Spindle Status, and only the first output shaft can close the second motor after stretching out
Power switch is not stretched out reaching the first output shaft and the second output shaft, with this so that the second motor is in slave mode
One output shaft stretches out that the second output shaft does not stretch out and the first output shaft and the second output shaft export three kinds of states, to correspond to point
Dynamic tri- kinds of gears of case 2L, 4L and 4H change by the state of the first output shaft and the second output shaft to be automatically performed transfer case
The switching of gear.
2, since the first retarder and the second retarder are completed to slow down using reducing gear train, technology maturation, performance is steady
It is fixed and cheap, it is conducive to improve its cost performance.
3, linkage gear seat is being fixed in shell since position sensor is used, installation linkage tooth on linkage gear seat
Wheel, linkage gear are driven by respective reducing gear train, drive brush rotation, thus by the on-off between brush and conductive slideway
Signal detects the position of the output shaft of reducing gear train drive, this means is simple and reliable, and stability is high;Hall can also be used
The non-contact detection mode of sensor can also be reliably completed the detection of position of output axle, and the fortune of motor is controlled with this
Row state realizes accurate control.
4, it is mounted on the upper scroll bar of respective motor shaft since the first retarder and the second retarder are also provided with, on worm screw
Equipped turbine, turbine drive reducing gear train, the change of power direction are completed by turbine and worm, so that this executing agency is tying
It is more compact on structure, reduce installation space.
5, since dynamic cushioning device is arranged in reducing gear train, it can be avoided the hard contact of transmitting powerhouse, conducive to prolonging
The service life of long executing agency.
6, since dynamic cushioning device includes fixing axle, intermediate gear, spiral spring mounting rack and whole grade tooth are installed in fixing axle
It takes turns, wiper arm is set on spiral spring mounting rack, spiral spring is installed on spiral spring mounting rack, the inner end of spiral spring is fixed on spiral spring mounting rack, in
Between gear mounting rack is fixed on gear, the dog of wiper arm is stretched in setting on gear mounting rack, and whole grade gear is installed on whole grade gear
Shift fork is arranged on whole grade gear stand for bracket, and shift fork connects the outer end of spiral spring, so that intermediate gear drives end grade tooth by spiral spring
Wheel rotation, and common components of the spiral spring as technology maturation, reliable performance are stablized.
7, based on the needs of installation site, whole grade gear can also be used as driving gear, and can also link another gear
Body is used as driving gear, is the transmitting for completing power by gear, does not have for the quantity of the intermediate gear in transmitting
There is concrete restriction, is intended only as a kind of mode convenient for statement.
8, since power switch is pressure touching switch, cam is fixed on the first driving gear, cam can touch pressure touching switch, according to
The power switch of the second motor, technology maturation, reliable performance are closed by the position of cam.
9, the utility model structural principle is simple, can be precisely controlled the state of the first output shaft and the second output shaft, and
It is automatically performed the gear conversion of transfer case, by this state convenient in industry promoting and applying.
Detailed description of the invention
Fig. 1 is the schematic perspective view (only comprising partial shell) of the utility model;
Fig. 2 is the configuration schematic diagram of Fig. 1;
Fig. 3 is the detonation configuration figure of reducing gear train;
Fig. 4 is the detonation configuration figure of position sensor.
Marked in the figure: 1, shell;2, first motor;3, the second motor;4, intermediate gear;5, gear mounting rack;6, first
Output shaft;7, the second output shaft;8, dog;9, spiral spring;10, spiral spring mounting rack;11, whole grade gear stand;12, whole grade gear;
13, wiper arm;14, shift fork;15, cam;16, pinion gear;17, gear is driven;18, turbine;19, worm screw;20, linkage gear seat;
21, brush;22, linkage gear;23, pressure touching switch;24, conductive slideway;25, fixing axle;26, the second rack gear.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.
The keynote idea of the utility model is that an output shaft is driven by a power source, and another power source drives another output
Axis, and by the stretching state of power source control output shaft, output shaft, which has, stretches out order linkage, and only an output shaft reaches
Behind position, another output shaft can stretch out so that output shaft have do not stretch out, one stretch out another and do not stretch out and all
Three kinds of states are stretched out, to correspond to tri- kinds of gears of transfer case 2L, 4L and 4H, realize transfer case by controlling the state of output shaft
Automatically switch gear position operation.
As depicted in figs. 1 and 2, first motor 2 is arranged in the utility model in shell 1, pacifies on the motor shaft of first motor 2
Worm screw 19 is filled, turbine 18 is equipped on worm screw 19, turbine 18 drives the reducing gear train for realizing with multiple gears and slowing down and constituting.
As shown in figure 3, the fixing axle 25 being mounted on shell 1 is arranged in reducing gear train, intermediate gear 4, spiral spring are installed in fixing axle 25
Mounting rack 10 and whole grade gear 12 are arranged wiper arm 13 on spiral spring mounting rack 10, install spiral spring 9 on spiral spring mounting rack 10, spiral spring 9
Inner end is fixed on spiral spring mounting rack 10, and gear mounting rack 5 is fixed on intermediate gear 4, and wiper arm is stretched in setting on gear mounting rack 5
13 dog 8 installs whole grade gear stand 11 on whole grade gear 12, shift fork 14 is arranged on whole grade gear stand 11, shift fork 14 connects
Connect the outer end of spiral spring 9.The first rack gear is equipped on whole grade gear 12, the first rack gear is provided on the first output shaft 6, the first output shaft
6 other end, which stretches out outside shell 1, to be arranged.Coaxial pinion gear 16 is also fixed on intermediate gear 4, engages connection in pinion gear 16
Moving gear 22.As shown in figure 4, linkage gear 22 is mounted on linkage gear seat 20, linkage gear seat 20 is fixed in shell 1,
Conductive slideway 24 is set on linkage gear seat 20, brush 21 is set on linkage gear 22, the rotation of linkage gear 22 can then drive electricity
Brush 21 can contact on conductive slideway 24, and whether brush 21 connects control of the conductive slideway 24 as 2 on/off of first motor
Signal.
The second motor 3 is also mounted in shell 1, the second motor 3 drives the second output shaft 7, the second motor 3 and the second output
Transmission and testing agency between transmission and testing agency between axis 7 and first motor 2 and the first output shaft 6 is essentially identical, only
Due to the needs of installation site, driving gear 17 is engaged again on whole grade gear 12, by second output of the engagement of driving gear 17
The second rack gear 26 on axis 7.And then directly made by being divided in retarder whole grade gear 12 in the transmission system of first motor 2
It is used for driving gear, for driving the first rack gear on the first output shaft 6.
It is further fixed on the pressure touching switch 23 of the second motor 3 in shell 1, cam 15, cam are set on whole grade gear stand 11
15 can touch pressure touching switch 23.
The course of work of the utility model is as follows:
First output shaft 6 of this executing agency and the second output shaft 7 are connected on the clutch in transfer case.Work as vehicle
When transfer case being needed to be in 2L gear, the letter of central control system detection the first position sensor and second position sensor of vehicle
Number, if detection position signal does not correspond to 2L gear, first motor 2 and the operation of the second motor 3 are controlled, by the first output shaft 6
It bounces back with the second output shaft 7, the two is made to be not at stretching state, before being only delivered to the power for inputting transfer case on bridge.
If vehicle needs to operate in 4L gear, the central control system of vehicle if, connects the power supply of first motor 2, drives snail
Bar 19 rotates, and passes through the intermediate gear 4 in the drive reducing gear train of turbine 18 and the gear mounting rack being mounted on intermediate gear 4
5 rotate together, and the dog 8 on gear mounting rack 5 stirs the wiper arm 13 on spiral spring mounting rack 10, so that spiral spring mounting rack 10
Rotation, the inner end rotation of spiral spring 9, under the action of elastic force, the outer end of spiral spring 9 drives shift fork 14 to rotate, then band in company with rotation
Dynamic end grade gear 12 and whole grade gear stand 11 rotate, and are stretched out by first the first output shaft of rack drives 6.At the same time, small
Gear 16 drives linkage gear 22 to rotate together with brush 21, when brush 21 connects conductive slideway 24, illustrates the first output shaft 6
It stretches out in place, then disconnects the power supply of first motor 2.So that the first output shaft 6 is in stretching state, the second output shaft 7 is in back
Contracting state, so that transfer case is switched to 4L gear.First output shaft 6 stretch out in place while, whole grade gear stand 11 it is convex
What wheel 15 had also touched the second motor 3 presses switch 23.
If vehicle needs to operate in 4H gear, the central control system of vehicle if, connects the power supply of the second motor 3, with above-mentioned
As first motor 2, the second output shaft 7 is driven to stretch out.During stretching, it is unique unlike: whole grade gear 12 drives
It drives gear 17 to rotate, to drive the second rack gear 26, and reduces the movement of touch switch.So that the first output shaft 6 and
Two output shafts 7 are in stretching state, and transfer case is switched to 4H gear automatically.When 4L 2L gear to be switched to, in
Control system first starts the revolution of the second motor 3, and the second output shaft 7 is bounced back, then controls first motor 2 again.
Above-mentioned first position sensor and second position sensor can also fix hall sensing on linkage gear seat 20
Device fixes the first magnet ring and the second magnet ring on the wheel shaft of linkage gear 22, and slot or setting convex block are opened up on the first magnet ring, is inserted
The second magnet ring, the polarity of the second magnet ring and the first magnet ring are inserted on slot or convex block on the contrary, Hall sensor detects the position of convex block
Confidence number can equally complete the detection of position signal, detect signal as the control signal of corresponding motor using this.
Above-mentioned reducing gear train can also be the retarder of other specific structures, as long as can be reduced to the high revolving speed of motor
The slower slow-speed of revolution does not do specific requirement to its specific structure.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model
Protect range.