CN106090202B - A kind of implementation method of the electronic control system of full-automatic speed change box - Google Patents

A kind of implementation method of the electronic control system of full-automatic speed change box Download PDF

Info

Publication number
CN106090202B
CN106090202B CN201610775638.1A CN201610775638A CN106090202B CN 106090202 B CN106090202 B CN 106090202B CN 201610775638 A CN201610775638 A CN 201610775638A CN 106090202 B CN106090202 B CN 106090202B
Authority
CN
China
Prior art keywords
gear
revolving speed
completion
grades
steps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610775638.1A
Other languages
Chinese (zh)
Other versions
CN106090202A (en
Inventor
王鹏阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610775638.1A priority Critical patent/CN106090202B/en
Publication of CN106090202A publication Critical patent/CN106090202A/en
Application granted granted Critical
Publication of CN106090202B publication Critical patent/CN106090202B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H59/00Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02Selector apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H2306/00Shifting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The invention discloses: a kind of electronic control system of full-automatic speed change box, unit is adjusted including push-button unit, gear setup unit, current gear display unit, revolving speed display unit, gear shift interval display unit, gear shift interval, system uses 12V or 24V direct current, is powered by vehicular power-bottle.Have the advantage that large tractor and medium-sized or above carrier loader can realize fluid drive, it is easy to operate, it is not susceptible to out of supply, neutral gear, gear shift is changed to enter, the case where slipping by slope.

Description

A kind of implementation method of the electronic control system of full-automatic speed change box
Technical field
The present invention relates to a kind of electronic control system of full-automatic speed change box and its implementation, answer more particularly, to one kind For the electronic control system and its implementation of large tractor and the full-automatic speed change box of medium-sized or above carrier loader, belong to certainly Dynamic control technology field.
Background technique
Large tractor and medium-sized or above carrier loader have become the main traffic means of transport in China rural area, are to be suitble to China The short-distance vehicle of use condition, large tractor and medium-sized or above carrier loader alleviate the burden of peasant's transport.
Currently, the gear shift of large tractor and medium-sized or above carrier loader can only be by the way of hand shift, hand shift Mode have the disadvantage in that
1, hand shift needs frequent operation gear shift, troublesome in poeration;
2, the vehicle of hand shift, which is easy to happen, slips by slope;
3, easily there is the case where gear shift is changed to enter in hand shift;
4, easily there is the case where out of supply, neutral gear in hand shift;
5, need to carry out manual shift when hand shift descending, cannot in time gear shift regulate the speed.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above deficiencies, provide a kind of electronic control system of full-automatic speed change box There is large tractor and medium-sized or above carrier loader can realize fluid drive for system and its implementation, easy to operate, be not susceptible to The case where out of supply, neutral gear, gear shift are changed to enter, slipped by slope advantage.
In order to solve the above problem, the invention adopts the following technical scheme: a kind of electronic control system of full-automatic speed change box, Including push-button unit, gear setup unit, current gear display unit, revolving speed display unit, gear shift interval display unit, shift Spacing adjustment unit, system use 12V or 24V direct current, are powered by vehicular power-bottle.
A kind of implementation method of the electronic control system of full-automatic speed change box, the control method the following steps are included:
Step S102 sets highest gear, and control system middle gear includes 1-8 grades, R grades, and R grades, to reverse gear, are pressed 1-8 grades In any one shelves or R grades, set highest gear.
Further, the control method is further comprising the steps of:
Step S103, whether monitoring revolving speed ZS is zero;Step S104, judges whether automobile steps on the gas.
Further, the control method is further comprising the steps of:
Whether step S108, monitoring revolving speed reach shift revolving speed, become one grade when revolving speed rises to an interval gear;
Step S109, gear shift, when revolving speed meets r × (N-1) < monitoring tachometer value ZS≤r × N, the shelves that wherein N is 1-8 grades Position, then be changed to N grades.
Further, the control method is further comprising the steps of:
Step S111 judges whether gear is zero;
Step S112 judges whether gear is identical as setting gear;
Whether step S114, revolving speed are less than the minimum speed of setting gear.
Further, gear shifting action step includes: in the implementation method of the electronic control system
Step S202 detects revolving speed;
Step S203, judges whether revolving speed matches gear;
Step S204, tachometer value > r × (N-1), trigger signal so that solenoid valve A obtain it is electric.
Further, gear shifting action step in the implementation method of the electronic control system further include:
Step S205, judges whether metal sensor JS has signal;Whether step S206 judges air cylinder detecting sensor QS There is signal.
Further, gear shifting action step in the implementation method of the electronic control system further include:
Step S207 disconnects current gear solenoid valve;
Step S208 connects corresponding 1-8 grades of the solenoid valve of current rotating speed;
Step S210, solenoid valve A power-off, return to step S202 after the completion.
Further, the control method the following steps are included:
Start from step S101, executes step S102 after the completion;
Step S102 sets highest gear, and control system middle gear includes 1-8 grades, R grades, and R grades, to reverse gear, are pressed 1-8 grades In any one shelves or R grades, set highest gear, for example setting 5 is worked as, follow-up operation can only run to 5 grades, execute step after the completion Rapid S103;
Step S103, whether monitoring revolving speed ZS is zero, if monitoring revolving speed ZS is zero to then follow the steps S104, otherwise executes step Rapid S107;
Step S104, judges whether automobile steps on the gas, if automobile is not stepped on the gas, thens follow the steps S106, otherwise executes step Rapid S105;
Step S106, system finishing operation;
Step S105, carrier loader hang 1 grade or R grades, return to step S103 after the completion;
Step S107 carries out rotation speed monitoring, executes step S108 after the completion;
Whether step S108, monitoring revolving speed reach shift revolving speed, when revolving speed rises to one grade of interval gear change, such as The every r gear of unit setting speed is adjusted by gear shift interval and changes one grade, if reaching shift revolving speed thens follow the steps S109, otherwise Return to step S107;
Step S109, gear shift, when revolving speed meets r × (N-1) < monitoring tachometer value ZS≤r × N, the shelves that wherein N is 1-8 grades Position, then be changed to N grades, for example, gearbox is changed to 2 grades from 1 grade after revolving speed increases to 1+r from 1, execute step after the completion S110;
Step S110 carries out gear judgement, executes step S111 and step S112 after the completion;
Step S111 judges whether gear is zero, if gear is zero, returns to step S103, if gear is not zero, Then return to step S107;
Step S112 judges whether gear is identical as setting gear, if gear is identical as setting gear, thens follow the steps Otherwise S113 returns to step S107;
Step S113 detects revolving speed, executes step S114 after the completion;
Whether step S114, revolving speed are less than the minimum speed of setting gear, if revolving speed is less than minimum turn of setting gear Speed then returns to step S109, otherwise returns to step S113.
Further, steps are as follows for gear shifting action in the implementation method of the electronic control system:
Gear shifting action starts from step S201, executes step S202 after the completion;
Step S202 detects revolving speed, executes step S203 after the completion;
Step S203, judges whether revolving speed matches gear, if revolving speed matches gear, returns to step S202;Otherwise Execute step S204;
Step S204, tachometer value > r × (N-1), trigger signal, so that solenoid valve A obtains electric, cylinder stretching, solenoid valve A control 1 grade of gear is made, executes step S205 after the completion;
Step S205, judges whether metal sensor JS has signal, if metal sensor JS has signal, thens follow the steps S206 disconnects N-1 grades of solenoid valves, otherwise returns to step S204;
Step S206, judges whether air cylinder detecting sensor QS has signal, if air cylinder detecting sensor QS has signal, holds Row step S207, it is no to then follow the steps S208.
Step S207 disconnects current gear solenoid valve, returns to step S206 after the completion;
Step S208 connects corresponding 1-8 grades of the solenoid valve of current rotating speed, executes step S209 after the completion;
Step S209, judges whether air cylinder detecting sensor QS has signal, if air cylinder detecting sensor QS no signal, is returned Receipt row step S208, it is no to then follow the steps S210;
Step S210, solenoid valve A power-off, return to step S202 after the completion.
The invention adopts the above technical scheme, and compared with the prior art has the advantage that
1, control system of the invention realizes one grade of gear by manually controlling the self shifter of Throttle Opening Control, operation letter Just, while the mode of manual shift can also be used.
2, after the driving system of vehicle stops working, detection revolving speed can by being coasted to 0, after revolving speed is to 0, The solenoid valve of one to multiple position shelves all powers off.
3, when revolving speed is not 0, system is not out of supply, is constantly in working condition, avoids out of supply;After revolving speed is 0, Driving system starting will avoid slipping by slope since neutral gear.
4, the speed that rises or falls for monitoring revolving speed will not be faster than the gear speed of artificial settings, and shift intervals revolving speed can It is adjusted by knob.
5, key is still in last time operation range after shutting down, powering off, and all after power-off, gear is neutral gear.
6, vehicle descending is not have to manual shift, can voluntarily gear shift.
The present invention will be further described with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is the electronic control system block diagram of full-automatic speed change box;
Fig. 2 is the flow chart of the implementation method of the electronic control system of full-automatic speed change box;
Fig. 3 is the flow chart of gear shifting action implementation method.
Specific embodiment
Embodiment, as shown in Figure 1, Figure 2 and Figure 3, a kind of electronic control system of full-automatic speed change box, including key list Member, gear setup unit, current gear display unit, revolving speed display unit, gear shift interval display unit, gear shift interval adjust single Member, system use 12V or 24V direct current, are powered by vehicular power-bottle.
The implementation method of the electronic control system of the full-automatic speed change box the following steps are included:
Start from step S101, executes step S102 after the completion;
Step S102 sets highest gear, and control system middle gear includes 1-8 grades, R grades, and R grades, to reverse gear, are pressed 1-8 grades In any one shelves or R grades, set highest gear, for example setting 5 is worked as, follow-up operation can only run to 5 grades, execute step after the completion Rapid S103;
Step S103, whether monitoring revolving speed ZS is zero, if monitoring revolving speed ZS is zero to then follow the steps S104, otherwise executes step Rapid S107;
Step S104, judges whether automobile steps on the gas, if automobile is not stepped on the gas, thens follow the steps S106, otherwise executes step Rapid S105;
Step S106, system finishing operation;
Step S105, carrier loader hang 1 grade or R grades, return to step S103 after the completion.
Step S107 carries out rotation speed monitoring, executes step S108 after the completion;
Whether step S108, monitoring revolving speed reach shift revolving speed, when revolving speed rises to one grade of interval gear change, such as The every r gear of unit setting speed is adjusted by gear shift interval and changes one grade, if reaching shift revolving speed thens follow the steps S109, otherwise Return to step S107;
Step S109, gear shift, when revolving speed meets r × (N-1) < monitoring tachometer value ZS≤r × N, the shelves that wherein N is 1-8 grades Position, then be changed to N grades, for example, gearbox is changed to 2 grades from 1 grade after revolving speed increases to 1+r from 1, execute step after the completion S110;
Step S110 carries out gear judgement, executes step S111 and step S112 after the completion;
Step S111 judges whether gear is zero, if gear is zero, returns to step S103, if gear is not zero, Then return to step S107;
Step S112 judges whether gear is identical as setting gear, if gear is identical as setting gear, thens follow the steps Otherwise S113 returns to step S107;
Step S113 detects revolving speed, executes step S114 after the completion;
Whether step S114, revolving speed are less than the minimum speed of setting gear, if revolving speed is less than minimum turn of setting gear Speed then returns to step S109, otherwise returns to step S113.
Steps are as follows for gear shifting action in the implementation method of the electronic control system:
Gear shifting action starts from step S201, executes step S202 after the completion;
Step S202 detects revolving speed, executes step S203 after the completion;
Step S203, judges whether revolving speed matches gear, if revolving speed matches gear, returns to step S202;Otherwise Execute step S204;
Step S204, tachometer value > r × (N-1), trigger signal so that solenoid valve A obtain it is electric, cylinder stretch out, solenoid valve A 1 grade of gear is controlled, executes step S205 after the completion;
Step S205, judges whether metal sensor JS has signal, if metal sensor JS has signal, thens follow the steps S206 disconnects N-1 grades of solenoid valves, otherwise returns to step S204;
Step S206, judges whether air cylinder detecting sensor QS has signal, if air cylinder detecting sensor QS has signal, holds Row step S207, it is no to then follow the steps S208.
Step S207 disconnects current gear solenoid valve, returns to step S206 after the completion;
Step S208 connects corresponding 1-8 grades of the solenoid valve of current rotating speed, executes step S209 after the completion;
Step S209, judges whether air cylinder detecting sensor QS has signal, if air cylinder detecting sensor QS no signal, is returned Receipt row step S208, it is no to then follow the steps S210;
Step S210, solenoid valve A power-off, return to step S202 after the completion.
Shift-down action is similar with shift-up action, and after revolving speed reduces, tachometer value≤r × (N-1) then becomes N-1 from N grades Shelves, it is final to disconnect solenoid valve N, connect N-1 solenoid valve.
First have to set highest gear X in the electronic control system of this full-automatic speed change box, when monitoring revolving speed ZS > r × When X, system just no longer shifts up.
Automobile engine system, engine system provide running car power, and running car system monitors the biography of revolving speed ZS Sensor detects the revolving speed of the system.The power resources of driving system be individually, after the revolving speed of driving system becomes 0, be System is in neutral position;But for the system of sailing that is intended to give way from neutral gear start-up operation, the speed shaft starting of driving system must be by generating electricity Machine system drives, that is, when ZS=0, engine is stepped on the gas, and driving system puts in the first speed, after driving detection speed shaft rotation, ZS >= After 1, driving system enters recycling for driving system.
The above is the citing of best mode for carrying out the invention, wherein the part that do not address in detail is that this field is common The common knowledge of technical staff.Protection scope of the present invention is based on the contents of the claims, any based on technology of the invention The equivalent transformation of enlightenment and progress, also within protection scope of the present invention.

Claims (1)

1. a kind of implementation method of the electronic control system of full-automatic speed change box, it is characterised in that: the electronic control system packet It includes between push-button unit, gear setup unit, current gear display unit, revolving speed display unit, gear shift interval display unit, shift Every adjusting unit, system uses 12V or 24V direct current, is powered by vehicular power-bottle;It the described method comprises the following steps:
Start from step S101, executes step S102 after the completion;
Step S102 sets highest gear, and control system middle gear includes 1-8 grades, R grades, and R grades, to reverse gear, are pressed in 1-8 grades and appointed One grade or R grades of meaning, sets highest gear, and follow-up operation can only run to highest gear, executes step S103 after the completion;
Step S103, whether monitoring revolving speed (ZS) is zero, if monitoring revolving speed (ZS) is zero to then follow the steps S104, otherwise executes step Rapid S107;
Step S104, judges whether automobile steps on the gas, if automobile is not stepped on the gas, thens follow the steps S106, no to then follow the steps S105;
Step S106, system finishing operation;
Step S105, carrier loader hang 1 grade or R grades, return to step S103 after the completion;
Step S107 carries out rotation speed monitoring, executes step S108 after the completion;
Whether step S108, monitoring revolving speed reach shift revolving speed, and when revolving speed rises an interval r, gear becomes one grade, changes if reaching Gear revolving speed thens follow the steps S109, otherwise returns to step S107;
Step S109, gear shift monitor tachometer value≤r × N when revolving speed meets r × (N-1) <, the gear that wherein N is 1-8 grades, then N grades are changed to, executes step S110 after the completion;
Step S110 carries out gear judgement, executes step S111 and step S112 after the completion;
Step S111 judges whether gear is neutral gear, if gear is neutral gear, returns to step S103, if gear is not empty Gear, then return to step S107;
Step S112 judges whether gear is identical as the highest gear of setting, if gear is identical as the highest gear of setting, holds Row step S113, otherwise returns to step S107;
Step S113 detects revolving speed, executes step S114 after the completion;
Whether step S114, revolving speed are less than the minimum speed of setting highest gear, if revolving speed is less than setting highest gear most The slow-speed of revolution then returns to step S109, otherwise returns to step S113;
Steps are as follows for gear shifting action in the implementation method of electronic control system:
Gear shifting action starts from step S201, executes step S202 after the completion;
Step S202 detects revolving speed, executes step S203 after the completion;
Step S203, judges whether revolving speed matches gear, if revolving speed matches gear, returns to step S202;Otherwise it executes Step S204;
Step S204, if tachometer value > r × (N-1), trigger signal so that solenoid valve A obtain it is electric, after the completion execute step S205;
Step S205, judges whether metal sensor (JS) has signal, if metal sensor (JS) has signal, thens follow the steps S206 disconnects N-1 grades of solenoid valves, otherwise returns to step S204;
Step S206, judges whether air cylinder detecting sensor (QS) has signal, if air cylinder detecting sensor (QS) has signal, holds Row step S207, it is no to then follow the steps S208;
Step S207 disconnects current gear solenoid valve A, returns to step S206 after the completion;
Step S208 connects corresponding 1-8 grades of the solenoid valve of current rotating speed, executes step S209 after the completion;
Step S209, judges whether air cylinder detecting sensor (QS) has signal, if air cylinder detecting sensor (QS) no signal, is returned Receipt row step S208, it is no to then follow the steps S210;
Step S210, solenoid valve A power-off, return to step S202 after the completion.
CN201610775638.1A 2016-08-31 2016-08-31 A kind of implementation method of the electronic control system of full-automatic speed change box Active CN106090202B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610775638.1A CN106090202B (en) 2016-08-31 2016-08-31 A kind of implementation method of the electronic control system of full-automatic speed change box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610775638.1A CN106090202B (en) 2016-08-31 2016-08-31 A kind of implementation method of the electronic control system of full-automatic speed change box

Publications (2)

Publication Number Publication Date
CN106090202A CN106090202A (en) 2016-11-09
CN106090202B true CN106090202B (en) 2019-02-05

Family

ID=57224159

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610775638.1A Active CN106090202B (en) 2016-08-31 2016-08-31 A kind of implementation method of the electronic control system of full-automatic speed change box

Country Status (1)

Country Link
CN (1) CN106090202B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1227319A (en) * 1998-02-03 1999-09-01 卢克驱动系统有限公司 Automobile
CN1613681A (en) * 2003-11-06 2005-05-11 井关农机株式会社 Operational vehicle
CN102037193A (en) * 2008-03-21 2011-04-27 株式会社小松制作所 Working vehicle, control device for working vehicle, and control method for working vehicle
CN201976449U (en) * 2010-04-13 2011-09-21 株式会社久保田 Display for operation vehicles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003301940A (en) * 2002-04-09 2003-10-24 Iseki & Co Ltd Automatic gear shift control device for moving vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1227319A (en) * 1998-02-03 1999-09-01 卢克驱动系统有限公司 Automobile
CN1613681A (en) * 2003-11-06 2005-05-11 井关农机株式会社 Operational vehicle
CN102037193A (en) * 2008-03-21 2011-04-27 株式会社小松制作所 Working vehicle, control device for working vehicle, and control method for working vehicle
CN201976449U (en) * 2010-04-13 2011-09-21 株式会社久保田 Display for operation vehicles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
卡特彼勒非公路刚性自卸车;卡特彼勒(中国)投资有限公司;《2012矿山论坛文集》;20120828;第10页

Also Published As

Publication number Publication date
CN106090202A (en) 2016-11-09

Similar Documents

Publication Publication Date Title
CN110296006B (en) Method and system for controlling rotating speed of engine
CN107364440B (en) Hybrid power car pure electric vehicle starting-up process control method
US20110135500A1 (en) Method and apparatus for lubricating a transmission of a motor vehicle
CN104859638A (en) Method and system for gear shifting control of hybrid car in parallel connection mode
CN108327701B (en) A kind of starting control method and system
CN106143473A (en) Vehicle auxiliary braking coordinated control system and control method
CN101006299A (en) Drive system, power output system incorporating the drive system, a vehicle equipped with the power output system, and control method for a drive system
CN108528426A (en) The control method and control device of hybrid vehicle
US9272712B2 (en) Vehicle energy consumption efficiency learning in the energy domain
US8204611B2 (en) Method for reducing quiescent power draw and machine using same
CN111089409B (en) Method and device for controlling outdoor unit fan and air conditioner
CN102826013A (en) Method, device and system for controlling hydrostatic power transmission system
CN106090202B (en) A kind of implementation method of the electronic control system of full-automatic speed change box
CN105179682A (en) Gear shifting control method and system of two-gear speed-changing vehicle
CN105545503B (en) The energy-saving control method and system of engine
CN103867369A (en) Vehicle starting protecting system and control method thereof
CN101178119A (en) Hydro-mechanical transmission engineering machinery automatic upshift gear changes and control method
CN106164849A (en) Multimode control system for vehicle
CN104929787B (en) One kind pumping control method
CN107031454A (en) Pure electric vehicle machine ramp accelerates and stall control method and device
CN103925090B (en) Dynamic energy conservation system, dynamic energy conservation method and engineering machinery
CN105221276B (en) A kind of control method of engine speed, system and crane
CN109114776B (en) A kind of central air-conditioning servo water pump circulating energy-saving control system
CN108340324A (en) Electric tool control method and electric tool control device
CN104003306B (en) Hydraulic starting system, method and crane

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant