CN203730736U - Road roller electronic control speed changing and gear selecting control system - Google Patents
Road roller electronic control speed changing and gear selecting control system Download PDFInfo
- Publication number
- CN203730736U CN203730736U CN201420032930.0U CN201420032930U CN203730736U CN 203730736 U CN203730736 U CN 203730736U CN 201420032930 U CN201420032930 U CN 201420032930U CN 203730736 U CN203730736 U CN 203730736U
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- block selecting
- hydraulic motor
- variable displacement
- displacement pump
- oil hydraulic
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Abstract
The utility model belongs to the technical field of electronic control, and provides a road roller electronic control speed changing and gear selecting control system which comprises a gear selector (1), a gear selection executing cylinder (2) and a gear selecting cylinder stroke feedback unit (3), a hydraulic motor variable pump opening degree adjustment control handle (4), a hydraulic motor variable pump opening degree adjustment executing mechanism (5) and a system main control unit (6). The system main control unit (6) outputs a driving signal to the gear selection executing cylinder (2) according to the gear signal outputted by the gear selector (1) and outputs a driving signal to the hydraulic motor variable pump opening degree adjustment executing mechanism (5) after receiving a hydraulic motor variable pump opening degree signal inputted by the hydraulic motor variable pump opening degree adjustment control handle (4). By means of the road roller electronic control speed changing and gear selecting control system, the operation comfort and the intelligentization and stability of overall speed changing and gear selecting are improved.
Description
Technical field
The utility model belongs to electronic control technology field, is specifically related to the automatically controlled speed change block selecting of a kind of road roller control system.
Background technique
Hydraulic road roller is the main product of current domestic single-drum road roller class, because it adopts fluid motor-driven walking, therefore called after " hydraulic road roller ".But such road roller can segment again according to gear shift mode, comprise the control mode of the direct control rate of variable displacement pump and the control mode with secondary mechanical speed change box structure.Two kinds of structures have his own strong points, but gap is larger on maneuverability pattern.Commutation variable displacement pump, by the direct control rate of oil hydraulic motor and direction, adopts the flow direction and the flow velocity of electric ratio handle or mechanical flexible axle control pump; With secondary mechanical speed change box structure there is secondary shift, in operator cabin, set up the operating handle by mechanical handling speed change, handle and realize speed change by Manual mechanical.With the control mode of secondary mechanical speed change box structure, because its existing secondary shift is many connecting rods mechanical structure, multiple strong points need to be provided on vehicle, cause turning point more, so adopt many connecting rods mechanical structure to reduce greatly mechanical transmission efficiency, cause manipulation resistance increment, driver travelling comfort is relatively poor.Simultaneously many connecting rods mechanical structure need to driven indoor location operating handle, and articulating point is outdoor, namely will offer elongated slot at operator cabin rear wall, and sealing to operator cabin, noise reduction, dustproof and later period maintenance are after sale all brought very large difficulty.。
Model utility content
For solving the problems of the technologies described above, the purpose of this utility model proposes the automatically controlled speed change block selecting of a kind of road roller control system.
The utility model adopts following technological scheme for completing above-mentioned purpose:
The automatically controlled speed change block selecting of a kind of road roller control system, described automatically controlled speed change block selecting control system include gear selector, as the block selecting of block selecting actuator carry out cylinder and gear-selecting cylinder travel feedback unit, in order to control the oil hydraulic motor variable displacement pump regulation Joystick of oil hydraulic motor variable displacement pump regulation and oil hydraulic motor variable displacement pump regulation actuator and to receive, analyze and the system main-control unit processed of output control core as the signal of the automatically controlled speed change block selecting of whole road roller control system; Described gear selector is connected with the input port of system main-control unit processed, and the shift signal that gear selector is exported is sent into system main-control unit processed; Described system main-control unit processed is carried out cylinder by the metal-oxide-semiconductor drive part of system control unit with described block selecting and is connected, and drives signal to carry out cylinder to block selecting according to one received of shift signal output; Described block selecting is carried out cylinder and is connected with the block selecting rocking arm of two-stage transmission, drives the block selecting rocking arm of two-stage transmission to move; Described block selecting is carried out cylinder and is adopted the automatically controlled block selecting of multi-section type to carry out cylinder; Cylinder setting is carried out in the block selecting that described block selecting is carried out described in cylinder stroke feedback unit correspondence; Described block selecting is carried out cylinder stroke feedback unit and is adopted switching mode Contactless Hall sensor; The magnet ring of described switching mode Contactless Hall sensor is arranged on described block selecting and carries out on the piston rod of cylinder; Described block selecting is carried out cylinder stroke feedback unit and is connected with system main-control unit processed input port, block selecting is carried out to the travel position signal feed back of cylinder to system main-control unit processed; The shift signal that the travel position signal of described block selecting execution cylinder is exported with gear selector is corresponding; Described oil hydraulic motor variable displacement pump regulation Joystick gathers port with the AD of system main-control unit processed and is connected, and oil hydraulic motor variable displacement pump aperture signal is sent into system main-control unit processed; Described system main-control unit processed receives after the oil hydraulic motor variable displacement pump aperture signal of oil hydraulic motor variable displacement pump regulation Joystick input, exports one and drives signal to oil hydraulic motor variable displacement pump adjustment actuating mechanism; Oil hydraulic motor variable displacement pump adjustment actuating mechanism control oil hydraulic motor variable displacement pump action, reaches and the shift signal of gear selector, aperture that travel position signal that cylinder is carried out in block selecting is corresponding oil hydraulic motor variable displacement pump aperture, completes shift transformation action; System main-control unit processed is carried out by unit processed system main-control the shifting state index signal of returning after block selecting action by output port and is turned back to gear selector, and is shown by the shifting state tutorial light of gear selector; The travel position feedback signal of oil hydraulic motor variable displacement pump regulation actuator gathers port with the AD of system main-control unit processed and is connected, and the travel position of oil hydraulic motor variable displacement pump regulation actuator is sent into system main-control unit processed by a magnitude of voltage that represents actuating motor travel position.
Described gear selector adopts three rotary switches, be used for producing a gear, two gears, three gears selection signals of three gears, described gear selector has shifting state tutorial light, and shifting state tutorial light carries out for receiving also display system master control unit the shifting state index signal of returning after block selecting action.
Described oil hydraulic motor variable displacement pump regulation Joystick adopts the electric proportional control handle of 0-5V output.
Described system main-control unit processed adopts the core MCU of PIC16F91x series monolithic as system main-control unit processed, described PIC16F91x series monolithic has to gather the input port of the shift signal that gear selector exports, there is the output port that stroke signal in order to block selecting is carried out to cylinder feeds back to gear selector, the A/D with the oil hydraulic motor variable displacement pump regulation signal for gathering the output of oil hydraulic motor variable displacement pump regulation Joystick gathers port, there is the metal-oxide-semiconductor drive part of carrying out cylinder action for controlling block selecting, having output drives block selecting to carry out the output port of cylinder actuating signal, there is the A/D collection port of carrying out the travel position signal of cylinder for gathering block selecting, the motor driving part having for driving the action of oil hydraulic motor variable displacement pump regulation actuating motor divides, the A/D with the actuating motor feedback signal that gathers actuating motor gathers port.
The automatically controlled speed change block selecting of a kind of road roller control system the utility model proposes, adopts technique scheme, has following beneficial effect:
(1), the utility model actuator adopts the automatically controlled block selecting of multi-section type to carry out cylinder.Block selecting is carried out cylinder and is designed with three pilot unit, carries out cylinder drive block selecting rocking arm to realize block selecting action in diverse location by the different on/off electricity logical combination control block selecting of each pilot solenoid valve; The problem such as solved former many connecting rods mechanical structure strong point, turning point is many, and transmission efficiency is low, and the large and travelling comfort of driver resistance in the time handling is relatively poor;
(2), cylinder stroke feedback unit is carried out in block selecting: block selecting is carried out cylinder the operating conditions such as waterproof and dustproof and gas turbidity test are had to relatively strict requirement, once the unclean phenomenon of the failure such as cylinder clamping stagnation, unreachable position that may occur of source of the gas; The utility model is carried out on cylinder block and is increased feedback unit device in block selecting, this feedback unit adopts Contactless Hall element senses formula sensor, carry out the inner magnet ring of installing of cylinder block with block selecting, magnet ring is carried out cylinder piston rod motion with block selecting, installation of sensors is fixed position on cylinder body, respectively magnet ring stop place when corresponding different gear, returns feedback signal by feedback unit transmission and can judge that block selecting carries out cylinder and whether carry out and put in place;
(3), electric proportional control handle and actuating motor: be the rotation that utilizes hydraulic actuating fluid pressure motor when hydraulic road roller work, be connected to mechanical gear box and carry out realizing after gear switching speed change; Thereby the utility model adopts the flow direction and the flow velocity of oil hydraulic motor variable displacement pump regulation Joystick control pump to drive oil hydraulic motor directly to control the speed of a motor vehicle and the direction of vehicle for the design of this part; Compared to traditional mechanical type flexible axle control commutation variable displacement pump, it is little that the driving mode of electric ratio handle has steering force, is not easy driving fatigue; Flow changes slowly, steadily pump is impacted little, prevents that flexible axle control mode from causing damage to vehicle because manual operation is improper etc.
(4), system main-control unit processed adopts PIC16F91X series monolithic; Because PIC16F91X series monolithic adopts bus-structured 8 the middle-end single-chip microcomputers of Harvard, its program storage area and data storage area are completely independent physically, and the bus of reading command and the bus of access data are also separated completely; Such structure allows the different possibility that becomes of the width of instruction bus and data/address bus; Therefore its data/address bus is 8, instruction bus is 14; And independent due to bus structure, reading command and accessing operation number can carry out simultaneously, improve the data traffic in single-chip microcomputer and further improved the execution efficiency of code.In addition, PIC16 series middle-end single-chip microcomputer has same s operation control and controls kernel, the difference of the peripheral functional modules that each model difference is just attached troops to a unit; So the utility model adopts the single-chip microcomputer of PIC16F series conveniently and with lower cost to change system according to the change of functional requirement.
In sum, the utility model adopts the automatically controlled block selecting of multi-section type to carry out cylinder as block selecting actuator, using electric proportional control handle and electric pushrod as oil hydraulic motor variable displacement pump regulation part, carry out cylinder stroke feedback unit and system main-control unit processed combines them the intellectuality control that has realized the automatically controlled speed change block selecting of road roller system by block selecting, improved intellectuality, the stability of operation comfort and overall speed change block selecting; Solved existing operating system installation difficulty, operate heavy, destroy operator cabin sealing, dustproof problem.
Brief description of the drawings
Fig. 1 is structure principle chart of the present utility model.
Fig. 2 is the utility model realization flow schematic diagram.
In figure: 1, gear selector, 2, block selecting carries out cylinder, 3, gear-selecting cylinder travel feedback unit, 4, oil hydraulic motor variable displacement pump regulation Joystick, 5, oil hydraulic motor variable displacement pump regulation actuating motor, 6, system main-control unit processed.
Embodiment
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 1, the automatically controlled speed change block selecting of a kind of road roller control system, described automatically controlled speed change block selecting control system include gear selector 1, as the block selecting of block selecting actuator carry out cylinder 2 and gear-selecting cylinder travel feedback unit 3, in order to control the oil hydraulic motor variable displacement pump regulation Joystick 4 of oil hydraulic motor variable displacement pump regulation and oil hydraulic motor variable displacement pump regulation actuator 5 and to receive, analyze and the system main-control unit 6 processed of output control core as the signal of the automatically controlled speed change block selecting of whole road roller control system; Described gear selector 1 is connected with the input port of system main-control unit 6 processed, and the shift signal that gear selector 1 is exported is sent into system main-control unit 6 processed; Described system main-control unit 6 processed is carried out cylinder by the metal-oxide-semiconductor drive part of system control unit with described block selecting and is connected, and drives signal to carry out cylinder 2 to block selecting according to one received of shift signal output; Described block selecting is carried out cylinder 2 and is connected with the block selecting rocking arm of two-stage transmission, drives the block selecting rocking arm of two-stage transmission to move; Described block selecting is carried out cylinder 2 and is adopted the automatically controlled block selecting of multi-section type to carry out cylinder; In this embodiment, it is " 201220740405.5 " disclosed " the pneumatic execution cylinder of a kind of Novel multi-section " that the cylinder employing patent No. is carried out in the automatically controlled block selecting of described multi-section type; The patent No. is that " 201220740405.5 " disclosed " the pneumatic execution cylinder of a kind of Novel multi-section " is the pneumatic execution cylinder of four-part form, and it is the pneumatic execution cylinder of 3 stops that cylinder is carried out in the automatically controlled block selecting of multi-section type adopting in this embodiment; In the pneumatic execution cylinder of multi-section type, there are three pilot unit, carry out cylinder by the different on/off electricity logical combination control block selecting of each pilot solenoid valve and drive block selecting rocking arm to realize block selecting action in diverse location; Three pilot unit are controlled respectively forward gear, middle stop block and retreat gear, when wherein the piston rod of block selecting execution cylinder all stretches out, correspondence retreats gear, corresponding forward gear when the piston rod of block selecting execution cylinder is all retracted, the piston rod that cylinder is carried out in block selecting stretches out stop block in correspondence in two/a period of time; Described block selecting is carried out the corresponding described block selecting execution of cylinder stroke feedback unit 3 cylinder 2 and is arranged; Described block selecting is carried out cylinder stroke feedback unit 3 and is adopted switching mode Contactless Hall sensor; The magnet ring of described switching mode Contactless Hall sensor is arranged on described block selecting and carries out on the piston rod of cylinder 2; Magnet ring is carried out cylinder piston rod with block selecting and is moved reciprocatingly, and the stop place of magnet ring passes to switching mode Contactless Hall sensor during by the different gear of correspondence, carry out cylinder stroke feedback unit 3 by block selecting and transmit back position feed back signal and can judge that block selecting carries out cylinder and whether carry out and put in place; Described block selecting is carried out cylinder stroke feedback unit 3 and is connected with system main-control unit processed input port, block selecting is carried out to the travel position signal feed back of cylinder 2 to system main-control unit 6 processed; The shift signal that the travel position signal of described block selecting execution cylinder 2 is exported with gear selector 1 is corresponding; Described oil hydraulic motor variable displacement pump regulation Joystick 4 gathers port with the AD of system main-control unit 6 processed and is connected, and oil hydraulic motor variable displacement pump aperture signal is sent into system main-control unit 6 processed; Described system main-control unit 6 processed receives after the oil hydraulic motor variable displacement pump aperture signal that oil hydraulic motor variable displacement pump regulation Joystick 4 inputs, and exports one and drives signal to oil hydraulic motor variable displacement pump adjustment actuating mechanism 5; Oil hydraulic motor variable displacement pump adjustment actuating mechanism 5 is controlled oil hydraulic motor variable displacement pump action, and oil hydraulic motor variable displacement pump aperture is reached and the shift signal of gear selector, aperture that travel position signal that cylinder is carried out in block selecting is corresponding, completes shift transformation action; Described oil hydraulic motor variable displacement pump adjustment actuating mechanism 5 includes actuating motor and electric pushrod; System main-control unit processed is carried out by unit processed system main-control the shifting state index signal of returning after block selecting action by output port and is turned back to gear selector, and is shown by the shifting state tutorial light of gear selector; The travel position feedback signal of oil hydraulic motor variable displacement pump regulation actuator gathers port with the AD of system main-control unit processed and is connected, and the travel position of oil hydraulic motor variable displacement pump regulation actuator is sent into system main-control unit processed by a magnitude of voltage that represents actuating motor travel position;
When block selecting carry out cylinder 2 travel position arrive gear selector 1 select position time, system main-control unit 6 processed is according to received, provided by oil hydraulic motor variable displacement pump regulation Joystick 4, oil hydraulic motor variable displacement pump aperture signal, controls the actuating motor work of oil hydraulic motor variable displacement pump regulation actuator 5; Oil hydraulic motor variable displacement pump aperture is reached with the shift signal of gear selector 1, block selecting and carry out the aperture that the travel position signal of cylinder 2 is corresponding;
In the time that block selecting is carried out the travel position of cylinder 2 and is not arrived the position that gear selector 1 selects, cylinder is carried out in now block selecting may there is clamping stagnation or other faults, system main-control unit 3 processed stores the aperture signal of the oil hydraulic motor variable displacement pump regulation handle 4 collecting, and disobeys signal deciding oil hydraulic motor variable displacement pump aperture accordingly; Now, system main-control unit 6 processed change of setting in advance of electric pushrod output to oil hydraulic motor variable displacement pump regulation actuator, thereby slowly change the stroke of electric pushrod, until the position that the position that block selecting execution cylinder is carried out is selected with gear selector is identical.
Described gear selector 1 adopts three rotary switches, is used for producing 1 gear, 2 gears, three gears selection signals of three gears; Described gear selector 1 has shifting state tutorial light, and shifting state tutorial light carries out for receiving also display system master control unit the shifting state index signal of returning after block selecting action.
Described Joystick 4 adopts the electric proportional control handle of 0-5V output, it becomes equal proportion to regulate relation with oil hydraulic motor variable displacement pump aperture, the size that is oil hydraulic motor variable displacement pump aperture is changed adjusting with the variation of electric proportional control handle position, and the oil hydraulic motor variable displacement pump regulation signal that oil hydraulic motor variable displacement pump regulation Joystick produces inputs to system main-control unit processed.
PIC16F91X series monolithic adopts bus-structured 8 the middle-end single-chip microcomputers of Harvard, and its program storage area and data storage area are completely independent physically, and the bus of reading command and the bus of access data are also separated completely; Such structure allows the different possibility that becomes of the width of instruction bus and data/address bus; Therefore its data/address bus is 8, instruction bus is 14; And independent due to bus structure, reading command and accessing operation number can carry out simultaneously, improve the data traffic in single-chip microcomputer and further improved the execution efficiency of code.In addition, PIC16 series middle-end single-chip microcomputer has same s operation control and controls kernel, the difference of the peripheral functional modules that each model difference is just attached troops to a unit; So the utility model adopts the single-chip microcomputer of PIC16F series conveniently and with lower cost to change system according to the change of functional requirement.
Fig. 2 provides the utility model realization flow schematic diagram, idiographic flow of the present utility model is as follows: after system starts, first system main-control unit 6 processed detects the selected shift signal of gear selector, cylinder control signal is carried out through certain analytic operation output block selecting after the shift signal that gear selector 1 selects being detected in system main-control unit 6 processed, drives solenoid valve break-make to make block selecting carry out cylinder 2 and carries out corresponding travel position; Executing gear selects after output, system detects gear-selecting cylinder travel feedback unit 3 signals now, because feedback unit signal changes with the change of magnet ring position, magnet ring is with piston rod movement, so gear-selecting cylinder travel feedback cell signal 3 has reflected cylinder piston rod position now, i.e. cylinder stroke position; If detect that 2 execution of block selecting execution cylinder put in place, the execution of oil hydraulic motor variable displacement pump regulation actuating motor 5 is according to the position of oil hydraulic motor variable displacement pump regulation Joystick; If block selecting being detected carries out cylinder 2 and carries out and do not put in place, now system main-control unit processed stores the position signal of the oil hydraulic motor variable displacement pump regulation Joystick collecting, thereby but and temporarily shield the input signal of oil hydraulic motor variable displacement pump regulation Joystick not based on this Signal Regulation oil hydraulic motor variable displacement pump aperture; Now the driving signal that sets the in advance electric pushrod to oil hydraulic motor variable displacement pump regulation actuator 5 can be exported in system main-control unit processed simultaneously, slowly increase the stroke of electric pushrod, continue to detect the feedback signal of block selecting execution cylinder stroke feedback unit simultaneously, put in place until cylinder execution is carried out in this feedback signal instruction block selecting, complete block selecting operation; Then cancel the shielding to Joystick input signal, according to the position output signal of oil hydraulic motor regulation Joystick, thereby regulator solution pressure motor drive motor stroke alteration oil hydraulic motor variable displacement pump aperture completes variable speed operation; So, complete block selecting, speed Control process.
Claims (4)
1. the automatically controlled speed change block selecting of a road roller control system, described automatically controlled speed change block selecting control system include gear selector (1), as the block selecting of block selecting actuator carry out cylinder (2) and gear-selecting cylinder travel feedback unit (3), in order to control the oil hydraulic motor variable displacement pump regulation Joystick (4) of oil hydraulic motor variable displacement pump regulation and oil hydraulic motor variable displacement pump regulation actuator (5) and as the signal of the automatically controlled speed change block selecting of whole road roller control system receive, analysis and export the system main-control unit processed (6) of control core; Described gear selector (1) is connected with the input port of system main-control unit processed (6), and the shift signal that gear selector is exported is sent into system main-control unit processed; Described system main-control unit processed (6) is carried out cylinder (2) by the metal-oxide-semiconductor drive part of system control unit with described block selecting and is connected, and drives signal to carry out cylinder (2) to block selecting according to one received of shift signal output; Described block selecting is carried out cylinder (2) and is connected with the block selecting rocking arm of two-stage transmission; Described block selecting is carried out cylinder (2) and is adopted the automatically controlled block selecting of multi-section type to carry out cylinder; Described block selecting is carried out the corresponding described block selecting of cylinder stroke feedback unit (3) and is carried out cylinder (2) setting; Described block selecting is carried out cylinder stroke feedback unit (3) and is adopted switching mode Contactless Hall sensor; The magnet ring of described switching mode Contactless Hall sensor is arranged on described block selecting and carries out on the piston rod of cylinder (2); Described block selecting is carried out cylinder stroke feedback unit and is connected with system main-control unit processed input port; The shift signal that the travel position signal of described block selecting execution cylinder (2) is exported with gear selector (1) is corresponding; Described oil hydraulic motor variable displacement pump regulation Joystick (4) gathers port with the AD of system main-control unit processed (6) and is connected; Described system main-control unit processed (6) receives after the oil hydraulic motor variable displacement pump aperture signal of oil hydraulic motor variable displacement pump regulation Joystick (4) input, exports one and drives signal to oil hydraulic motor variable displacement pump adjustment actuating mechanism (5); Oil hydraulic motor variable displacement pump adjustment actuating mechanism (5) is controlled the action of oil hydraulic motor variable displacement pump; System main-control unit processed (6) is carried out by unit processed system main-control the shifting state index signal of returning after block selecting action by output port and is turned back to gear selector (1), and is shown by the shifting state tutorial light of gear selector (1); The travel position feedback signal of oil hydraulic motor variable displacement pump regulation actuator gathers port with the AD of system main-control unit processed and is connected, and the travel position of oil hydraulic motor variable displacement pump regulation actuator (5) is sent into system main-control unit processed (6).
2. the automatically controlled speed change block selecting of road roller according to claim 1 control system; It is characterized in that: described gear selector (1) adopts three rotary switches.
3. the automatically controlled speed change block selecting of road roller according to claim 1 control system, it is characterized in that: described system main-control unit processed (6) adopts the core MCU of PIC16F91x series monolithic as system main-control unit processed, described PIC16F91x series monolithic has to gather the input port of the shift signal that gear selector exports, there is the output port that stroke signal in order to block selecting is carried out to cylinder feeds back to gear selector, the A/D with the oil hydraulic motor variable displacement pump regulation signal for gathering the output of oil hydraulic motor variable displacement pump regulation Joystick gathers port, having output drives block selecting to carry out the I/O output port of cylinder (2) actuating signal, there is the I/O collection port of carrying out the travel position signal of cylinder for gathering block selecting, there is the A/D collection port that gathers oil hydraulic motor variable displacement pump regulation actuating motor (5) travel feedback signal.
4. the automatically controlled speed change block selecting of road roller according to claim 1 control system; It is characterized in that: described oil hydraulic motor variable displacement pump regulation Joystick (4) adopts the electric proportional control handle of 0-5V output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032930.0U CN203730736U (en) | 2014-01-20 | 2014-01-20 | Road roller electronic control speed changing and gear selecting control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032930.0U CN203730736U (en) | 2014-01-20 | 2014-01-20 | Road roller electronic control speed changing and gear selecting control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730736U true CN203730736U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420032930.0U Expired - Fee Related CN203730736U (en) | 2014-01-20 | 2014-01-20 | Road roller electronic control speed changing and gear selecting control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791080A (en) * | 2014-01-20 | 2014-05-14 | 洛阳市黄河软轴控制器股份有限公司 | Electric control variable speed gear selecting control system of road roller |
| CN106368104A (en) * | 2016-11-11 | 2017-02-01 | 徐工集团工程机械股份有限公司 | Key function switching control device and method of spreading machine control device |
-
2014
- 2014-01-20 CN CN201420032930.0U patent/CN203730736U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791080A (en) * | 2014-01-20 | 2014-05-14 | 洛阳市黄河软轴控制器股份有限公司 | Electric control variable speed gear selecting control system of road roller |
| CN103791080B (en) * | 2014-01-20 | 2016-02-24 | 洛阳市黄河软轴控制器股份有限公司 | Road roller automatically controlled speed change block selecting control system |
| CN106368104A (en) * | 2016-11-11 | 2017-02-01 | 徐工集团工程机械股份有限公司 | Key function switching control device and method of spreading machine control device |
| CN106368104B (en) * | 2016-11-11 | 2019-02-26 | 徐工集团工程机械股份有限公司 | A kind of the keypress function conversion control device and method of paver manipulation device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20190120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |