CN206736680U - A kind of wheel-type spreading machine running gear - Google Patents
A kind of wheel-type spreading machine running gear Download PDFInfo
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- CN206736680U CN206736680U CN201720461795.5U CN201720461795U CN206736680U CN 206736680 U CN206736680 U CN 206736680U CN 201720461795 U CN201720461795 U CN 201720461795U CN 206736680 U CN206736680 U CN 206736680U
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- potentiometer
- master controller
- wheel
- running gear
- spreading machine
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Abstract
The utility model discloses a kind of wheel-type spreading machine running gear, including master controller, described master controller is connected with potentiometer, traveling pump and running motor respectively, described potentiometer includes manual governing potentiometer and pedal speed-adjusting potentiometer, described manual governing potentiometer is connected with the shelves that pave, and described pedal speed-adjusting potentiometer is connected with traveling shelves.The utility model meets by adjusting the corresponding relations of variables such as the input value of potentiometer and the current value of respective pump, the current value of motor, speed of travel value, torque change rule a series of and paves shelves and travel the maximal rate requirements of shelves.
Description
Technical field
A kind of wheel-type spreading machine running gear is the utility model is related to, belongs to technical field of engineering machinery.
Background technology
In the running gear design of wheel-type spreading machine, by the increase of fast ratio, the walking load energy for the shelves that pave is improved
Power, however, while with high load capability, the speed for the shelves that pave improves as far as possible again, with meet pave performance and
Machine performance, so as to improve the applicability of machine and competitiveness.Work progress is an extraneous continually changing process of load,
When running into the change of material heap height, truck retreating, if machine can be always ensured that constant speed is advanced, this is with regard to that can substantially improve
Flatness of constructing and packed uniform effect.
Existing technical scheme is that simple running gear control method is single between potentiometer value and pump current value
Corresponding relation.In the presence of hypodynamic hidden danger is driven, can not meet to pave shelves and travels the maximal rate requirements of shelves；User used
Need to be changed according to the load in the external world in journey, the artificial potentiometer value that adjusts carrys out regulation speed；It is not current potential when resistance is very big
Device regulation to it is maximum when produce peak torque, but peak torque is realized at flex point, this point does not meet the operation think of of paver
Dimension, manual operation is got up difficult.
Utility model content
Technical problem to be solved in the utility model is the defects of overcoming prior art, there is provided a kind of wheel-type spreading machine row
Walking system, meet in the regulation section of whole potentiometer input variable, the discharge capacity of pump will change from small to large, and motor
Discharge capacity on suitable opportunity from big past small change, shelves and travel the maximal rate requirements of shelves to meet to pave；In control process
In, the input value of potentiometer wants the current value of respective pump（Pumpage）, motor current value（Motor displacement）, speed of travel value,
A series of variables such as torque change rule, it is such technological accumulation such as wheel-type spreading machine travelling control by the technical research
A large amount of experiences and basis.
In order to solve the above technical problems, the utility model provides a kind of wheel-type spreading machine running gear, including master controller,
It is characterized in that described master controller is connected with potentiometer, traveling pump and running motor respectively, described potentiometer includes hand
Dynamic speed-regulating potentiometer and pedal speed-adjusting potentiometer, described manual governing potentiometer are connected with the shelves that pave, described foot-operated tune
Fast potentiometer is connected with traveling shelves.
Further, be provided with proportion magnetic valve between described traveling pump and running motor, described proportion magnetic valve with
Described master controller is connected.
Further, described master controller is connected by running motor magnetic valve with described running motor.
Further, described master controller is connected with diesel engine controller, and described diesel engine controller is with starting
Machine is connected, and described engine is connected with traveling pump.
Further, described master controller is connected with diesel engine controller, described diesel engine controller and throttle
Potentiometer is connected, and described throttle potentiometer is connected with described master controller.
Further, it is connected between described master controller and diesel engine controller by CAN.
Further, described master controller is connected with display by CAN.
The beneficial effect that the utility model is reached：
By adjusting the input value of potentiometer and the current value of respective pump（Pumpage）, motor current value（Motor is arranged
Amount）, speed of travel value, a series of corresponding relation of variables such as torque change rule, meet and pave shelves and travel the maximums of shelves
Rate request；Work progress is exactly an extraneous continually changing process of load, and running into material heap, just change, truck enter regression
When change, machine can be always ensured that constant speed is advanced, and this can substantially improve construction flatness and packed uniform effect.Pass through
The technical research has been such technological accumulation such as wheel-type spreading machine travelling control a large amount of experiences and basis, and the technology should
With the innovative point that will turn into wheel-type spreading machine.
Brief description of the drawings
Fig. 1 is a kind of theory diagram of wheel-type spreading machine running gear of the utility model；
Fig. 2 is that the utility model input and output correspond to graph of a relation；
Fig. 3 is the flow chart of the utility model closed loop regulation；
Fig. 4 is the flow chart of the utility model moment of torsion automatic adjusument.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this
The technical scheme of utility model, and the scope of protection of the utility model can not be limited with this.
As shown in figure 1, a kind of wheel-type spreading machine running gear, including master controller, described master controller respectively with electricity
Position device, traveling pump are connected with running motor, and described potentiometer includes manual governing potentiometer and pedal speed-adjusting potentiometer, institute
The manual governing potentiometer stated is connected with the shelves that pave, and described pedal speed-adjusting potentiometer is connected with traveling shelves.Described row
Walk and proportion magnetic valve is provided between pump and running motor, described proportion magnetic valve is connected with described master controller.It is described
Master controller be connected by running motor magnetic valve with described running motor.Described master controller and Diesel Engine Control
Device is connected, and described diesel engine controller is connected with engine, and described engine is connected with traveling pump.Described master
It is connected between controller and diesel engine controller by CAN, described diesel engine controller is connected with throttle potentiometer
Connect, described throttle potentiometer is connected with described master controller.Described master controller passes through CAN phase with display
Connection.
Whole control process only has an input variable, is manual governing potentiometer for the shelves that pave（Resistive）,
It is pedal speed-adjusting potentiometer for travelling shelves（Hall）；Output variable has three kinds, when the electric current of pump, second, motor
Electric current, third, the speed of travel；Wherein it is linear with corresponding current value to give tacit consent to it due to can not electrically detect for pumpage and motor displacement
It is related；The full scale regulation section of pump is correspondingly inputted between the whole district plus the full scale regulation section of motor, also just corresponding speed
Full output interval；For flex point t in figure, it is the control cross-connecting area of pump and motor, according to the individual difference of every chassis, certainly exists
Dead band；The input relation of real-time moment of torsion and potentiometer is somewhat special, in general, the appearance of maximum torque point be not
The maximum end of potentiometer, but in mid-transition point, as shown in Figure 2.
A kind of control method of wheel-type spreading machine running gear, according to the relation of input and output, make potentiometer input value
The velocity amplitude that the electric current of 0.5V ~ 4.5V corresponding speeds minimum value ~ speed maximum, pump and motor is as needed is voluntarily adjusted, and is adjusted
Section process comprises the following steps：
（1）Controller judges the current value situation when front pump and motor, is re-recorded down after the completion of regulation and works as front pump and motor
Electric current state of value；
（2）From small toward increasing the added-time, the electric current for first adjusting pump changes from small to big speed, then keeps, then adjust the electricity of motor
Flow ascending；
（3）Speed reduces from the electric current for during big past small reduction, first adjusting motor, then adjusts the electric current reduction of pump.
Before and after velocity variations, controller needs to judge the current value situation when front pump and motor, is re-recorded after the completion of regulation
Down when front pump and the electric current state of value of motor.
Therefore, the control strategy is not required to artificially determine current control flex point, but need to artificially determine maximal rate（That is Hz
Number）, its advantage is exactly fixed speed control, and in the loading range of permission, speed is constant.
As shown in Figure 3 and Figure 4, the detailed process of the regulation of the pump and motor current is：
（1）Admission velocity closed loop states, the minimum value of potentiometer to the minimum value of maximum corresponding speed to maximum, most
Small value is both needed to demarcate with maximum；
（2）Rotational potentiometer, gather way to V, PID control, the electric current of pump still reaches to from small toward big increase, during to maximum
Less than setting speed, motor current is again from small toward big increase；
（3）When pump and maximum motor current, if VIt is real≥VIf, then rotational potentiometer, reduce speed to V, PID control,
First maintain pump electric current constant, reduce motor current, motor current is if 0, then reduces pump electric current, waits new potentiometer value；
（4）If VIt is real<VIf, and without departing from deviation dead band 2m/min, then maintain pump and motor maximum current, wait new electricity
Position device value；
（5）If exceeding deviation dead band 2m/min, but diesel engine speed≤1900rpm, then default user need not enter
Moment of torsion adaptive model, pump and motor current are maintained, waits new potentiometer value；Display, which provides prompting, simultaneously " please improve and start
Machine rotating speed is to obtain more large driving force "；
（6）If diesel engine speed>1900rpm, paver are in forward travel state, into moment of torsion adaptive model；When outer
When boundary's load is very big, user's setting does not enter moment of torsion adaptive model, and it is flat to find one that user manually adjusts potentiometer
Weighing apparatus point；
（7）Into after moment of torsion adaptive model, pump electric current remains maximum, and motor current gradually decreases to 0, to obtain maximum
Onward impulse；Peak torque prompt message occurs in display, and " automatically into peak torque pattern, turning potentiometer value down will move back
Go out the state "；
（8）If potentiometer value changes, and VIt is real<VIf, VIf—VIt is real≤ 2m/min, or VIt is real≥VIf, then closed into normal speed
Ring status；If VIf—VIt is real>2m/min, then maintain the state.
In summary：
1）In actual mechanical process, if maximal rate does not reach requirement, need first to increase the maximum current value of motor,
If DeGrain after increase, then would increase the maximum current value of pump (current increase is no more than 50mA).If the former
The regulating time of speed point is long when current breakpoint puts to death Qu Tai great or the latter's control during control, then needs to increase the minimum of motor
Electric current, on the contrary there is impact at current breakpoint, then need to reduce the minimum current of motor；
2）Analysis process default engine throttle is constant in 2000rpm or so above, therefore in the case of speed closed loop,
May be in any position automatically into moment of torsion adaptive model；If engine speed, in below 1900rpm, default user is not
Peak torque is needed, will not now enter moment of torsion adaptive model, is handled by normal speed closed loop.
In superincumbent description, the control strategy is referred to as velocity close-loop control（Abbreviation closed loop）；Control flow chart is given tacit consent to
By taking forward travel state as an example, for each gear, the control for the state that moves forward and backward is just the same, simply a control advance valve,
One control retreats valve；Under closed-loop case, when external world's load is very big, by adjusting electric current adjust automatically torque output, until
Reach an equalization point（Refer to the maximal rate that current working can reach）Or peak torque, this certain process need to be in engine
Carried out during maximum (top) speed 2000rpm.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (7)
1. a kind of wheel-type spreading machine running gear, including master controller, it is characterized in that, described master controller respectively with current potential
Device, traveling pump are connected with running motor, and described potentiometer includes manual governing potentiometer and pedal speed-adjusting potentiometer, described
Manual governing potentiometer be connected with the shelves that pave, described pedal speed-adjusting potentiometer with traveling shelves be connected.
2. a kind of wheel-type spreading machine running gear according to claim 1, it is characterized in that, described traveling pump and walking horse
Proportion magnetic valve is provided between reaching, described proportion magnetic valve is connected with described master controller.
3. a kind of wheel-type spreading machine running gear according to claim 1, it is characterized in that, described master controller passes through row
Motor magnetic valve is walked with described running motor to be connected.
4. a kind of wheel-type spreading machine running gear according to claim 1, it is characterized in that, described master controller and diesel oil
Machine controller is connected, and described diesel engine controller is connected with engine, and described engine is connected with traveling pump.
5. a kind of wheel-type spreading machine running gear according to claim 1, it is characterized in that, described master controller and diesel oil
Machine controller is connected, and described diesel engine controller is connected with throttle potentiometer, described throttle potentiometer with it is described
Master controller is connected.
6. a kind of wheel-type spreading machine running gear according to claim 4 or 5, it is characterized in that, described master controller with
It is connected between diesel engine controller by CAN.
7. a kind of wheel-type spreading machine running gear according to claim 1, it is characterized in that, described master controller and display
Device is connected by CAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461795.5U CN206736680U (en) | 2017-04-28 | 2017-04-28 | A kind of wheel-type spreading machine running gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720461795.5U CN206736680U (en) | 2017-04-28 | 2017-04-28 | A kind of wheel-type spreading machine running gear |
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| Publication Number | Publication Date |
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| CN206736680U true CN206736680U (en) | 2017-12-12 |
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| CN201720461795.5U Active CN206736680U (en) | 2017-04-28 | 2017-04-28 | A kind of wheel-type spreading machine running gear |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958182A (en) * | 2017-04-28 | 2017-07-18 | 徐工集团工程机械股份有限公司 | A kind of wheel-type spreading machine running gear and its control method |
| CN111720295A (en) * | 2020-06-04 | 2020-09-29 | 中联重科股份有限公司 | Method and device for calibrating displacement current of pumping pump and engineering machinery |
-
2017
- 2017-04-28 CN CN201720461795.5U patent/CN206736680U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958182A (en) * | 2017-04-28 | 2017-07-18 | 徐工集团工程机械股份有限公司 | A kind of wheel-type spreading machine running gear and its control method |
| CN111720295A (en) * | 2020-06-04 | 2020-09-29 | 中联重科股份有限公司 | Method and device for calibrating displacement current of pumping pump and engineering machinery |
| CN111720295B (en) * | 2020-06-04 | 2021-10-15 | 中联重科股份有限公司 | Method and device for calibrating displacement current of pumping pump and engineering machinery |
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