CN104477780A - Device and method for controlling crane operation speed - Google Patents
Device and method for controlling crane operation speed Download PDFInfo
- Publication number
- CN104477780A CN104477780A CN201410736614.6A CN201410736614A CN104477780A CN 104477780 A CN104477780 A CN 104477780A CN 201410736614 A CN201410736614 A CN 201410736614A CN 104477780 A CN104477780 A CN 104477780A
- Authority
- CN
- China
- Prior art keywords
- speed
- engine
- rotating speed
- ratio
- driving engine
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control And Safety Of Cranes (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses a device for controlling a crane operation speed. The device comprises a first acquisition unit, a first control unit, a second control unit and an energy accumulator, wherein the second control unit is used for acquiring the rotating speed information and operating speed information of a hydraulic pump; whether the rotating speed of the hydraulic pump is matched with the operating speed is judged; if so, an engine maintains the start rotating speed; if not, the rotating speed of the engine and the speed ratio information of a transmission system are acquired; whether the rotating speed of the engine is matched with the operating speed under the current speed ratio is judged; if so, the engine is adjusted to an objective rotating speed status; if not, the speed ratio matching with the operating speed and the rotating speed of the engine are calculated, and the transmission system and the engine are adjusted to the objective speed ratio and the objective rotating speed status. The speed ratio of the intermediate transmission system is changed by the device to adjust the operating speed, and the engine always operates in an economical rotating speed region to reduce the operation fuel consumption of the entire machine. The invention further discloses a method for controlling the crane operation speed.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly the operating speed operating control of hoisting crane.The invention still further relates to the operating speed method of operating of hoisting crane.
Background technology
Hoisting crane utilizes hydraulic pressure as the power resources of power element more, mainly has the advantages such as tractive performance is good, control comfort, lightweight, system bulk is little, flexible arrangement due to hydraulic efficiency pressure system.
Hoisting crane is in operation process, and its responsiveness needs constantly to adjust according to handling situations, such as when zero load, warming-up exercise, needs high speed motion, and when heavy duty, minor motion operation, needs to carry out low speed operation.A good hoisting crane needs the demand simultaneously ensureing two kinds of operating speeds, and when needing high-speed job, operating speed is high as far as possible; And when needing low speed operation, operating speed is low as much as possible again, namely needs high speed, high efficiency and the low speed fine motion stability of operation.Therefore, hoisting crane often arranges one or more control element, for controlling the change of operating speed.
At present, the speed governing of crane job system mainly contains following several method:
The first, the rotating speed of adjustment driving engine.This method of adjustment is generally used for driving engine Direct driver Hydraulic Pump, also can drive Hydraulic Pump 201 by driving engine 101 by the parts such as change speed gear box 103, power takeoff 102.For car hosit, its power transmission line as shown in Figure 1.
Apply in the system of this speed regulating method, the Transmissions such as change speed gear box 103, power takeoff 102 generally maintain a fixing speed ratio, and (this speed ratio is generally near 1, the size of this speed ratio directly affects some performances of operation, and concrete impact effect is described in detail below).When needing adjustment System work speed, by the rotating speed of the driving engine 101 of adjustment belt hydrodynamic press pump 201, adjust the rotating speed of Hydraulic Pump 201, and then the flow of adjustment pump, realize the adjustment of the input flow rate of power element, and then realize the adjustment of power element work speed.
In this method, in order to ensure the operating speed scope of car hosit, the speed setting range of Hydraulic Pump 201 will have certain width, and the adjustment of this speed controlled by operating speed change demand, this change demand comes from the steering unit (as Das Gaspedal, operating handle etc.) of car hosit, and the change of this speed is caused by the rotation speed change of driving engine 101.
For car hosit, several aspect is depended in its complete machine oil consumption: the efficiency that system performs, the fuel economy, system capacity recovery ability etc. of driving engine.
With regard to the driving engine that current car hosit is used, oil consumption during its work is by the impact of several aspect: the rotating speed etc. of the self structure (self overcome friction and the propulsive effort in order to keep self to work continually and steadily) of driving engine, the load (drive the load of operation unit, drive engine accessory power rating as the load of electrical generator etc.) of driving engine, driving engine.Economic operation rotating speed (economical consumption of fuel district) width of general driving engine only accounts for about 1/8 of engine governed speed scope, and the economic operation rotating speed sector width of the driving engine of fuel economy excellence may reach about 1/6.
Because driving engine economical consumption of fuel work area is less, if in order to ensure car hosit operating speed scope, under many operating modes, driving engine can not work in economic operation rotating speed district, machinery complex operation oil consumption will very high (driving engine be very large in the unit power oil consumption difference in economical consumption of fuel district and non-economy oil consumption district, high person even can reach more than one times, specifically can refer to Fig. 4), if in order to the operation oil consumption ensureing car hosit, by the collocation of intermediate transmission system speed ratio, can realize allowing the driving engine economical consumption of fuel district that is operated in as much as possible (select the transmission speed ratio of an input speed/output speed < 1, when require driving engine more be operated in economical consumption of fuel district time, this speed ratio is less), but when if now operating personal manipulation machinery carries out fine motion, the subtle change of throttle cause the subtle change of engine speed after intermediate transmission system amplifies, the movement range of Working mechanism will be made well beyond expection, thus reduce the operability of system minor motion, the change curve of working speed and engine speed can refer to accompanying drawing 5 (in figure, the curve of top is operating speed, middle curve is engine speed, following curve is that rotation speed change is poor).
The second, adjustment hydraulic pressure capacity of pump.In the hydraulic efficiency pressure system of this control method of application, main pump generally adopts the volume adjustable hydraulic pump 201' of adjustable discharge capacity, and its power transmission line as shown in Figure 2.
Should system in this way, when needs regulate responsiveness, the discharge capacity by adjustment volume adjustable hydraulic pump 201' realizes the adjustment of the input flow rate of power element, and then realizes the adjustment of power element work speed.Now, the rotating speed of driving engine 101 generally maintains on a constant rotating speed.
In this method, in order to ensure the operating speed scope of car hosit, the discharge capacity of volume adjustable hydraulic pump 201' regulates and needs certain width, and the adjustment of this discharge capacity controlled by operating speed change demand, this change demand comes from the steering unit (as Das Gaspedal, operating handle etc.) of car hosit; Maximum, the minimum injection rate of controllable capacity pump depend on maximum, the minimum velocity of car hosit Working mechanism, and the rotating speed of driving engine during operation.If the operation rotating speed of driving engine 101 lower (being positioned near economical consumption of fuel district), just must select the controllable capacity pump of comparatively huge discharge (maximum, minimum injection rate is all larger), the traffic demand of hydraulic actuator when being used for meeting car hosit high-speed job; If the operation rotating speed of driving engine 101 higher (near rated speed of rotation or a little less than rated speed of rotation), the traffic demand of hydraulic actuator when now the controllable capacity pump of smaller discharge capacity (maximum, minimum injection rate is all smaller) can meet car hosit high-speed job, but because driving engine 101 works long hours in non-economy operating area, the operation oil consumption of complete machine is higher.
The third, adjustment System dredge oil amount.In the hydraulic efficiency pressure system of this control method of application, main pump, actuating unit generally adopt quantitative, and after main pump pressure oil port, be provided with adjustable automatically controlled by pass valve 205, its power transmission line as shown in Figure 3.
Should system in this way, when needs governing speed, the leakage oil mass of automatically controlled by pass valve 205 in adjustable hydraulic efficiency pressure system, the flow of hydraulic oil for doing work in adjustment System, realize the adjustment of the input flow rate of power element, and then realize the adjustment of power element work speed.Now, the rotating speed of driving engine 101 generally all maintains on a constant rotating speed.
In this method, in order to ensure the operating speed scope of car hosit, the spillage of automatically controlled by pass valve 205 regulates and needs certain scope, and the adjustment of spillage controlled by operating speed change demand, this change demand comes from the steering unit (as Das Gaspedal, operating handle etc.) of car hosit.The latus rectum of by pass valve depends on the maximum flow of system, maximum, the minimum leakage amount of by pass valve then depend on that actuating unit is minimum, maximum speed operation time traffic demand poor.For ensureing mechanical maximum operation speed, the maximum flow that Hydraulic Pump 201 needs the moment to allow with system carries out work, this not only causes the waste of system dynamic, and when mechanical low speed operation because a large amount of hydraulic oil flows back to fuel tank from by pass valve, hydraulic efficiency pressure system temperature also can be caused to rise the bad phenomenon such as too fast.
4th kind, comprehensive adjustment method.Utilize in said method 1 ~ 3 one or more together action regulate.In this method, when utilizing multiple method to carry out speed adjustment, the communication problem between multiple regulated variable certainly will be there is, thus exacerbate the complexity of control system, and, also cannot solve the shortcoming that oil consumption is higher, performance is poor completely.
In addition, Authorization Notice No. is in the patent of invention of CN101687617B, refer to single motor hoisting crane of motor rotary speed when utilizing the transmitting ratio of bottom bracket-travel transmission mechanism to limit work.But undeclaredly in related disclosure how to utilize and specific implementation, one or more speed ratios of what it related to utilize travel transmission mechanism, the rotating speed of motor is limited, be not by initiatively carrying out adjusting to reach speed change, optimize for the purpose of oil consumption, the deficiency that above-mentioned four kinds of control methods exist cannot being solved.
Therefore, how overcoming the shortcomings such as the oil consumption that above-mentioned several method shows is high, performance is poor, hydraulic efficiency pressure system temperature is unstable, is those skilled in the art's technical issues that need to address.
Summary of the invention
The first object of the present invention is to provide a kind of crane job speed manipulation device.This device can realize the adjustment of operating speed by changing the speed ratio of intermediate transmission system, and controls driving engine and always work in economic speed district, thus realizes the object reducing overall operation oil consumption.
The second object of the present invention is to provide a kind of crane job speed manipulation method.
For realizing above-mentioned first object, the invention provides a kind of crane job speed manipulation device, the engine operated rotating speed district of described hoisting crane is preset as engine economical rotating speed district, and described device comprises:
First acquiring unit, for obtaining Hydraulic Pump rotary speed information;
First control unit, for inputting operating speed information;
Second control unit, for obtaining Hydraulic Pump rotary speed information, operating speed information, judge whether Hydraulic Pump rotating speed mates operating speed, if so, then driving engine keeps initial rotating speed, if not, then enters next step;
Obtain engine speed, driving system speed ratio information, judge by regulating engine speed coupling operating speed, if so, then to adjust driving engine to rotating speed of target state, if not, then entering next step under present gear ratio;
Calculate the speed ratio and engine speed that mate with operating speed, adjustment driving system and driving engine are to goals ratio and rotating speed of target state;
Energy storage, is located at crane hydraulic system, for while adjustment legacy system speed ratio to described hydraulic efficiency pressure system replenishment system pressure.
Preferably, described second control unit is after adjustment driving engine to rotating speed of target state, and judge whether Hydraulic Pump rotating speed mates operating speed further, if so, then driving engine runs with this rotating speed, if not, then proceeds to described second step.
Preferably, described second control unit calculates the speed ratio and engine speed that mate with operating speed in the following manner, and adjustment driving system and driving engine are to goals ratio and rotating speed of target state:
Calculate and adjust legacy system speed ratio;
By regulating engine speed coupling operating speed, if so, then can enter next step, if not, then proceeding to previous step under judging speed ratio after the adjustment;
Adjustment driving engine is to rotating speed of target state.
For realizing above-mentioned second object, the invention provides a kind of crane job speed manipulation method, it is engine operated rotating speed district that the method presets engine economical rotating speed district, comprising:
Obtain Hydraulic Pump rotary speed information, operating speed information, judge whether Hydraulic Pump rotating speed mates operating speed, if so, then driving engine keeps initial rotating speed, if not, then enters next step;
Obtain engine speed, driving system speed ratio information, judge by regulating engine speed coupling operating speed, if so, then to adjust driving engine to rotating speed of target state, if not, then entering next step under present gear ratio;
Calculate the speed ratio that mate with operating speed and engine speed, adjust driving system and driving engine to goals ratio and rotating speed of target state, and to described hydraulic efficiency pressure system replenishment system pressure while adjusting legacy system speed ratio.
Preferably, also comprise: after adjustment driving engine to rotating speed of target state, judge whether Hydraulic Pump rotating speed mates operating speed further, if so, then driving engine runs with this rotating speed, if not, then proceeds to described second step.
Preferably, described 3rd step comprises:
Calculate and adjust legacy system speed ratio;
By regulating engine speed coupling operating speed, if so, then can enter next step, if not, then proceeding to previous step under judging speed ratio after the adjustment;
Adjustment driving engine is to rotating speed of target state.
Preferably, the initial rotating speed of described driving engine is the minimum speed in engine economical rotating speed interval.
Preferably, the initial speed ratio of described driving system is guarantee that the initial rotating speed of driving engine is the comparatively low speed ratio of described minimum speed.
Preferably, speed-ratio regulation is realized by the gear of conversion driveline gear case.
Preferably, adopt energy storage to described hydraulic efficiency pressure system replenishment system pressure.
Crane job speed manipulation device and method provided by the invention, change the method for operating of crane job speed, it utilizes the multiple gear ratios speed changing function of legacy system, realize the multistage adjustment of driving system speed ratio, the adjustment of operating speed can be realized by the speed ratio changing intermediate transmission system, and control driving engine and always work in economic speed district, thus reach the object reducing overall operation oil consumption, simultaneously, utilize the multistage regulatory function of driving system speed ratio, the function responded fast in low speed operating area fine adjustment, high-speed job district can be realized.In addition, utilize the energy storage increased in system, can make up hydraulic efficiency pressure system in the system pressure fluctuation of driving system because occurring when conversion speed ratio causes the power short time to be interrupted, the system pressure of guarantee operating system is constant.
Accompanying drawing explanation
Fig. 1 is the power transmission line figure of the first crane power system in prior art;
Fig. 2 is the power transmission line figure of the second crane power system in prior art;
Fig. 3 is the power transmission line figure of the third crane power system in prior art;
Fig. 4 is the oil consumption-speed curves figure of certain large diesel engine;
Fig. 5 is that single speed is than operation speed change curves figure;
Fig. 6 is the systematic schematic diagram of crane job speed manipulation device provided by the present invention;
Fig. 7 is multiple gear ratios operating speed change curve.
Fig. 8 is the diagram of circuit of crane job speed manipulation method provided by the present invention;
In figure:
101. driving engine 102. power takeoff 103. change speed gear box 104. transmission shaft 105. auxiliary gear box 106. drive axle 107. gearbox shifting control unit 108. car body controller 109. tachogen 201. Hydraulic Pump 201'. volume adjustable hydraulic pump 202. centre revolving joint 203. hydraulic actuator (pump, valve, oil cylinder etc.) 204. hydraulic reservoir 205. automatically controlled by pass valve 205'. energy storage 206. operation variable-speed controllers
Detailed description of the invention
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 6, Fig. 6 is the systematic schematic diagram of crane job speed manipulation device provided by the present invention.
In a kind of specific embodiment, crane job speed manipulation device provided by the invention is for controlling crane power system.The hydraulic efficiency pressure system that this power system mainly comprises driving engine 101, power takeoff 102, change speed gear box 103, auxiliary gear box 105, drive axle 106 and is made up of Hydraulic Pump 201, centre revolving joint 202, hydraulic actuator 203, hydraulic reservoir 204 etc., power enters change speed gear box 103 after driving engine 101 exports, then auxiliary gear box 105 is inputted, auxiliary gear box 105 has multiple clutch end, drives the Hydraulic Pump 201 of forward and backward drive axle 106 and hydraulic efficiency pressure system respectively by transmission shaft 104.
Driving engine 101 rotating speed is preset in a rotating speed interval range, this rotating speed interval range is determined according to the economic speed district of driving engine, the general appropriate expansion to both sides centered by consumption minimization rotating speed, get interval end value as minimum speed and maximum speed of revolution, in incipient state, driving engine 101 is positioned on the minimum speed in economic speed district, and change speed gear box 103 is on a lower gear, revolution ratio now due to hydraulic pressure 201 pump is lower, therefore system no-load consumption power limited.
The main constituent elements of crane job speed manipulation device has tachogen 109, operation variable-speed controller 206, car body controller 108, gearbox shifting control unit 107, energy storage 205' etc.
Wherein, tachogen 109 is the first acquiring unit, it is installed on Hydraulic Pump 201, for detecting Hydraulic Pump rotary speed information, operation variable-speed controller 206 is the first control unit, for inputting operating speed information, report sensor 109 and operation variable-speed controller 206 is all connected to car body controller 108, car body controller 108 is the second control unit, it is connected with driving engine 101, and be connected with change speed gear box 103 by gearbox shifting control unit 107, engine speed information and change speed gear box gear information can be obtained, and control driving engine 101 and change speed gear box 103.
Particularly, car body controller 108 controls driving engine 101 and change speed gear box 103 in the following manner:
When the operating speed of Working mechanism needs to change to a higher steady speed or needs continue to change operating speed, operating personal handles operation variable-speed controller 206, send one or continuous print speed change request signal on car body controller 108, car body controller 108 is by the signals of rotational speed sensor of this signal and Hydraulic Pump 201, engine rotational speed signal, change speed gear box gear is compared, judge that change speed gear box 103 is in current shift situation, can driving engine 101 meet present speed demand in the economic speed district preset, if meet, namely gear-shift command is sent to driving engine 101, till engine speed meets speed requirement, if engine speed still can not meet present speed demand, car body controller 108 can according to information such as speed demand signal, engine speed interval range, change speed gear box speed ratios, calculate suitable change speed gear box gear and engine speed, and send shifting commands to change speed gear box 103, gear-shift command is sent to driving engine 101, regulate the mode of operation of driving engine 101 and change speed gear box 103, till the rotating speed of Hydraulic Pump 201 meets operating speed demand.
Further, car body controller 108 calculates the speed ratio and engine speed that mate with operating speed in the following manner, adjustment change speed gear box 103 and driving engine 101 to goals ratio and rotating speed of target state:
Calculate and adjust change speed gear box 103 speed ratio;
By regulating engine speed coupling operating speed, if so, then can enter next step, if not, then proceeding to previous step under judging speed ratio after the adjustment;
Adjustment driving engine 101 to rotating speed of target state.
Generally, the rotating speed of pump is no more than 2200rpm, travel to take into account vehicle, change speed gear box speed ratio is selected to be generally 0.8 ~ 14 (according to vehicle model difference, ratio coverage is different, but the change speed gear box top-gear ratio of heavy-duty vehicle is generally 0.75 ~ 1, and low-grade speed ratio is then 8 ~ 14); In order to ensure that the rotating speed of pump meets job requirement, one can be increased to several driving device (as auxiliary gear box, angle driver etc.) in whole messenger chain, be used for improving the speed ratio of messenger chain, make it the job requirements being more suitable for pump, the present invention changes whole messenger chain speed ratio by changing gearbox-gear, and then improves the rotating speed of pump.
Such as, the economic speed interval of driving engine 101 is 1200rpm-1600rpm, in incipient state, driving engine 101 runs with the rotating speed of 1200rpm under Low gear state, the speed ratio of current shift is 14, the output speed of change speed gear box 103 is 1200rpm ÷ 14 ≈ 85rpm, exports rear drive Hydraulic Pump 201 can meet current work speed needs through auxiliary gear box 105.
When operating speed accelerate the output speed that needs change speed gear box 103 be 114rpm time, due under current shift, its maximum speed of revolution 1600rpm can meet operating speed needs (1600rpm ÷ 14 ≈ 114rpm), therefore without the need to gearshift, only the rotating speed of driving engine 101 need be adjusted to maximum speed of revolution 1600rpm from 1200rpm.
When operating speed become very fast, when needing the output speed of change speed gear box 103 to be 150rpm, then need first change speed gear box 103 to be adjusted to a high gear, if the speed ratio of this gear is 10, then after gearshift, then engine speed is adjusted to the requirement (1500rpm ÷ 10 ≈ 150rpm) that 1500rpm can meet operating speed.
When operating speed become faster, when needing the output speed of change speed gear box 103 to be 1400rpm, then need first change speed gear box 103 to be adjusted to higher gear, if the speed ratio of this gear is 1, then after gearshift, then engine speed is adjusted to the requirement (1400rpm ÷ 1=1400pm) that 1400rpm can meet operating speed.Otherwise, if operating speed is from fast to slow, also adopt same control principle, with operating speed by the difference accelerated slowly be only carried out be downshift, reduction of speed operates.
As a kind of situation that may occur, for same speed demand, car body controller 108 may calculate two groups of combinations, one group is low gear height rotating speed, another group is high gear slow speed of revolution, for this situation, can further than higher rotation speed and slow-revving rate of fuel consumption, the combination that preferential use rate of fuel consumption is low.Certainly, due in the rotating speed interval that driving engine is default, the oil consumption of each rotating speed is all relatively low, and difference is less, therefore, also can select any one group of combination.
Consider the impact of the factors such as calculating, systematic error, after driving engine 101 and change speed gear box 103 are adjusted to rotating speed of target and target gear by car body controller 108 in the manner described above, can judge whether Hydraulic Pump rotating speed mates operating speed further, if result is yes, then show that regulation and control put in place, driving engine 101 runs with this rotating speed, if the result is negative, then continue to control driving engine 101 and change speed gear box 103 in the manner described above, until Hydraulic Pump rotating speed meets operating speed demand.
In speed change operation process, if there is gearshift operating mode in change speed gear box 103, operating system there will be the phenomenon of power interruption, now hydraulic system pressure can reduce instantaneously, for ensureing that power interruption can not have an impact to system job, energy storage 205' is added, for making up the fluctuation of pressure because change speed gear box 103 gearshift produces in hydraulic work system.
According to the characteristic of driving engine self, its economic work region is generally near maximum torque point, scope is approximately 1/7 ~ 1/10 (see Fig. 4) of engine speed variation range, and for power machine, go for good oil consumption, usually have two kinds of methods, one is make that driving engine is as much as possible is operated in underloaded state, and two is make that driving engine is as much as possible to be operated in economic speed district.
For construction machinery and equipment, mechanical performance is depended in the load of its Working mechanism, is therefore difficult to be reduced.Thus, the driving engine economic speed district that is operated in as much as possible is allowed just to become the effective method that construction machinery and equipment reduces oil consumption.
In order to reduce the oil consumption of whole hoisting crane, the rotating speed of driving engine 101 is fixed on economical consumption of fuel rotating speed district by the present invention, and the minimum speed namely during operation and maximum speed of revolution are determined.But, too narrow the interval full rotating speed relative to driving engine 101 of this rotating speed is interval, operating speed demand cannot be met, therefore just need to expand rotating speed interval.
The present invention utilizes the multiple gear ratios principle of gearbox in use for vehicle 103, the rotating speed of driving engine 101 interval is expanded further after driveline gear, thus meets the requirement of operating speed setting range.
In the present invention, the key element that operating speed controller 206 controls adjusts to some extent, changed into by the control engine speed in existing several method and only propose operating speed demand, concrete execution then controls driving engine 101 by car body controller 108, change speed gear box 103 carries out action; Have the following advantages compared to prior art:
First, because driving engine 101 always works in economic speed district, therefore can significantly reduce overall operation oil consumption.
Secondly, in low speed operating area, because change speed gear box 103 is in comparatively low gear, the transmitting ratio of driving system is comparatively large, and the rotation speed change of driving engine 101, after transmitting ratio reduces, diminishes on the impact of operating speed, thus can operating speed be regulated more accurately to change; In high velocity, change speed gear box 103 is in higher gear, the rotation speed change of driving engine 101 is after transmitting ratio amplifies, high-speed response is more quick (see Fig. 7, in figure, the funiclar curve of top is engine speed, middle continuous print curve be single speed than operation speed change curves, ten funiclar curves of below represent the Hydraulic Pump rotating speed that 7 gears to 16 keep off respectively).
Moreover utilize the energy storage 205' increased in system, can make up hydraulic efficiency pressure system in the system pressure fluctuation of driving system because occurring when gearshift causes the power short time to be interrupted, guarantee operating system system pressure is constant.
Foregoing is only a preferred embodiment of the present invention, is specifically not limited thereto, and can make pointed adjustment according to actual needs on this basis, thus obtain different embodiments.Such as, the change speed gear box 103 of driving system has multiple choices, can adopt Automatic Transmission, mechanical automatic speed-changing case, CVT change speed gear box etc., and according to the speed ratio situation of change of change speed gear box, different follow-up messenger chain speed ratio of can arranging in pairs or groups, meets operating speed demand of getting on the bus; Or power taking mouth also can have multiple choices, as after being arranged on auxiliary gear box 105, to be arranged in the middle of change speed gear box 103 and auxiliary gear box 105; Or, utilize torque converter to change messenger chain speed ratio, etc.Because mode in the cards is more, just casehistory no longer one by one here.
Please refer to Fig. 8, Fig. 8 is the diagram of circuit of crane job speed manipulation method provided by the present invention.
Except above-mentioned crane job speed manipulation device, the present invention also provides a kind of crane job speed manipulation method, and the method has been included in above-mentioned in the explanation of operating control, is described further below in conjunction with diagram of circuit to it again.
As shown in the figure, whole speed change work flow is divided into preparation and operation two megastage, at new field of technical activity (see the first dotted line frame), after system starts, open job request switch, system starts self-inspection, detect change speed gear box gear, engine speed, Hydraulic Pump rotating speed, operation variable-speed controller position respectively, and whether normally to judge change speed gear box gear, engine speed, Hydraulic Pump rotating speed, operation variable-speed controller position, if so, then System self-test is complete, if not, then system alarm, after trouble-shooting, restarting systems.
At sessions (see the second dotted line frame), it is engine operated rotating speed district that the method presets engine economical rotating speed district, comprising:
S101: obtain Hydraulic Pump rotary speed information, operating speed information, judge whether Hydraulic Pump rotating speed mates operating speed, if so, then driving engine keeps initial rotating speed, as the minimum speed in engine economical rotating speed interval, if not, then enters next step.
Can S102: obtain engine speed, driving system speed ratio information, judging meet operating speed requirement by regulating engine speed under current shift, if so, then adjusting driving engine to rotating speed of target state, if not, then entering next step.
S103: calculate gear and the engine speed that can meet operating speed requirement, adjustment change speed gear box and driving engine, to target gear and rotating speed of target state, specifically comprise:
Calculate and adjust change speed gear box gear, while adjustment change speed gear box gear, adopting energy storage to hydraulic efficiency pressure system replenishment system pressure;
Operating speed requirement can be met by regulating engine speed under judging gear after the adjustment, if so, then entering next step, if not, then proceeding to previous step;
Adjustment driving engine is to rotating speed of target state.
S104: after adjustment driving engine to rotating speed of target state, judge whether Hydraulic Pump rotating speed meets operating speed requirement further, if so, then driving engine runs with this rotating speed, if not, then proceeds to S102.The specific implementation of above steps with reference to the description to operating control, can repeat no more here.
It will be appreciated by those skilled in the art that, all or part of flow process in above-mentioned implementation method, can have been come by computer program instructions related hardware, described program can be stored in computer readable storage media, this program, when performing, can comprise the embodiment flow process of said method.
Above crane job speed manipulation device and method provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands core concept of the present invention for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a crane job speed manipulation device, is characterized in that, the engine operated rotating speed district of described hoisting crane is preset as engine economical rotating speed district, and described device comprises:
First acquiring unit, for obtaining Hydraulic Pump rotary speed information;
First control unit, for inputting operating speed information;
Second control unit, for obtaining Hydraulic Pump rotary speed information, operating speed information, judge whether Hydraulic Pump rotating speed mates operating speed, if so, then driving engine keeps initial rotating speed, if not, then enters next step;
Obtain engine speed, driving system speed ratio information, judge by regulating engine speed coupling operating speed, if so, then to adjust driving engine to rotating speed of target state, if not, then entering next step under present gear ratio;
Calculate the speed ratio and engine speed that mate with operating speed, adjustment driving system and driving engine are to goals ratio and rotating speed of target state;
Energy storage, is located at crane hydraulic system, for while adjustment legacy system speed ratio to described hydraulic efficiency pressure system replenishment system pressure.
2. crane job speed manipulation device according to claim 1, it is characterized in that, described second control unit is after adjustment driving engine to rotating speed of target state, judge whether Hydraulic Pump rotating speed mates operating speed further, if, then driving engine runs with this rotating speed, if not, then proceeds to described second step.
3. crane job speed manipulation device according to claim 1, it is characterized in that, described second control unit calculates the speed ratio and engine speed that mate with operating speed in the following manner, and adjustment driving system and driving engine are to goals ratio and rotating speed of target state:
Calculate and adjust legacy system speed ratio;
By regulating engine speed coupling operating speed, if so, then can enter next step, if not, then proceeding to previous step under judging speed ratio after the adjustment;
Adjustment driving engine is to rotating speed of target state.
4. a crane job speed manipulation method, it is engine operated rotating speed district that the method presets engine economical rotating speed district, comprising:
Obtain Hydraulic Pump rotary speed information, operating speed information, judge whether Hydraulic Pump rotating speed mates operating speed, if so, then driving engine keeps initial rotating speed, if not, then enters next step;
Obtain engine speed, driving system speed ratio information, judge by regulating engine speed coupling operating speed, if so, then to adjust driving engine to rotating speed of target state, if not, then entering next step under present gear ratio;
Calculate the speed ratio that mate with operating speed and engine speed, adjust driving system and driving engine to goals ratio and rotating speed of target state, and to described hydraulic efficiency pressure system replenishment system pressure while adjusting legacy system speed ratio.
5. crane job speed manipulation method according to claim 4, is characterized in that, also comprise: after adjustment driving engine to rotating speed of target state, judge whether Hydraulic Pump rotating speed mates operating speed further, if so, then driving engine runs with this rotating speed, if not, then described second step is proceeded to.
6. crane job speed manipulation method according to claim 4, is characterized in that, described 3rd step comprises:
Calculate and adjust legacy system speed ratio;
By regulating engine speed coupling operating speed, if so, then can enter next step, if not, then proceeding to previous step under judging speed ratio after the adjustment;
Adjustment driving engine is to rotating speed of target state.
7. the crane job speed manipulation method according to any one of claim 4 to 6, is characterized in that, the initial rotating speed of described driving engine is the minimum speed in engine economical rotating speed interval.
8. crane job speed manipulation method according to claim 7, is characterized in that, the initial speed ratio of described driving system is guarantee that the initial rotating speed of driving engine is the comparatively low speed ratio of described minimum speed.
9. the crane job speed manipulation method according to any one of claim 4 to 6, is characterized in that, realizes speed-ratio regulation by the gear of conversion driveline gear case.
10. the crane job speed manipulation method according to any one of claim 4 to 6, is characterized in that, adopts energy storage to described hydraulic efficiency pressure system replenishment system pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736614.6A CN104477780B (en) | 2014-12-04 | 2014-12-04 | Device and method for controlling crane operation speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736614.6A CN104477780B (en) | 2014-12-04 | 2014-12-04 | Device and method for controlling crane operation speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104477780A true CN104477780A (en) | 2015-04-01 |
| CN104477780B CN104477780B (en) | 2017-05-03 |
Family
ID=52752428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410736614.6A Active CN104477780B (en) | 2014-12-04 | 2014-12-04 | Device and method for controlling crane operation speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104477780B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836083A (en) * | 2015-12-07 | 2017-06-13 | 中联重科股份有限公司 | Washing and sweeping vehicle driving speed control system, method and device and washing and sweeping vehicle |
| CN108083114A (en) * | 2017-11-29 | 2018-05-29 | 徐州重型机械有限公司 | A kind of crane energy-saving control method and system |
| CN108131364A (en) * | 2017-12-25 | 2018-06-08 | 徐州重型机械有限公司 | A kind of power drive system and its control method |
| CN109367390A (en) * | 2018-09-21 | 2019-02-22 | 中国重汽集团青岛重工有限公司 | Safety control system of power takeoff of dump truck and method |
| CN114312298A (en) * | 2022-01-29 | 2022-04-12 | 潍柴动力股份有限公司 | Single-hair washing and sweeping vehicle and control method thereof |
| CN114719019A (en) * | 2022-03-28 | 2022-07-08 | 陕西法士特齿轮有限责任公司 | Control system and control method for power takeoff of transmission system of Automatic Transmission (AT) |
| CN116066339A (en) * | 2021-11-01 | 2023-05-05 | 河北雷萨重型工程机械有限责任公司 | Pumping equipment control method and device, storage medium and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147255A (en) * | 2000-11-09 | 2002-05-22 | Tadano Ltd | Engine speed control device |
| CN101558243A (en) * | 2006-12-15 | 2009-10-14 | 株式会社小松制作所 | Engine load control device of work vehicle |
| CN102729814A (en) * | 2012-06-27 | 2012-10-17 | 三一重工股份有限公司 | Engineering machinery vehicle |
| CN103032185A (en) * | 2012-12-20 | 2013-04-10 | 中联重科股份有限公司 | Control method and control device of automobile crane and automobile crane |
| CN104002674A (en) * | 2014-06-10 | 2014-08-27 | 徐工集团工程机械股份有限公司 | Power transmission system, control method and single-engine type crane truck |
| CN203902277U (en) * | 2014-04-22 | 2014-10-29 | 徐州重型机械有限公司 | Single-engine power driving device and crane |
-
2014
- 2014-12-04 CN CN201410736614.6A patent/CN104477780B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147255A (en) * | 2000-11-09 | 2002-05-22 | Tadano Ltd | Engine speed control device |
| CN101558243A (en) * | 2006-12-15 | 2009-10-14 | 株式会社小松制作所 | Engine load control device of work vehicle |
| CN102729814A (en) * | 2012-06-27 | 2012-10-17 | 三一重工股份有限公司 | Engineering machinery vehicle |
| CN103032185A (en) * | 2012-12-20 | 2013-04-10 | 中联重科股份有限公司 | Control method and control device of automobile crane and automobile crane |
| CN203902277U (en) * | 2014-04-22 | 2014-10-29 | 徐州重型机械有限公司 | Single-engine power driving device and crane |
| CN104002674A (en) * | 2014-06-10 | 2014-08-27 | 徐工集团工程机械股份有限公司 | Power transmission system, control method and single-engine type crane truck |
Non-Patent Citations (1)
| Title |
|---|
| 朱澄清: "中小型液压汽车起重机上车传动与发动机匹配设计的"万有特性图法"", 《建筑机械》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836083A (en) * | 2015-12-07 | 2017-06-13 | 中联重科股份有限公司 | Washing and sweeping vehicle driving speed control system, method and device and washing and sweeping vehicle |
| CN108083114A (en) * | 2017-11-29 | 2018-05-29 | 徐州重型机械有限公司 | A kind of crane energy-saving control method and system |
| CN108083114B (en) * | 2017-11-29 | 2019-05-21 | 徐州重型机械有限公司 | A kind of crane energy-saving control method and system |
| CN108131364A (en) * | 2017-12-25 | 2018-06-08 | 徐州重型机械有限公司 | A kind of power drive system and its control method |
| CN109367390A (en) * | 2018-09-21 | 2019-02-22 | 中国重汽集团青岛重工有限公司 | Safety control system of power takeoff of dump truck and method |
| CN109367390B (en) * | 2018-09-21 | 2021-07-16 | 中国重汽集团青岛重工有限公司 | Safety control system and method for power takeoff of dump truck |
| CN116066339A (en) * | 2021-11-01 | 2023-05-05 | 河北雷萨重型工程机械有限责任公司 | Pumping equipment control method and device, storage medium and electronic equipment |
| CN114312298A (en) * | 2022-01-29 | 2022-04-12 | 潍柴动力股份有限公司 | Single-hair washing and sweeping vehicle and control method thereof |
| CN114312298B (en) * | 2022-01-29 | 2023-12-15 | 潍柴动力股份有限公司 | Single-shot washing and sweeping vehicle and control method thereof |
| CN114719019A (en) * | 2022-03-28 | 2022-07-08 | 陕西法士特齿轮有限责任公司 | Control system and control method for power takeoff of transmission system of Automatic Transmission (AT) |
| CN114719019B (en) * | 2022-03-28 | 2023-11-07 | 陕西法士特齿轮有限责任公司 | Control system and control method for power takeoff of AT automatic transmission drive line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104477780B (en) | 2017-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104477780A (en) | Device and method for controlling crane operation speed | |
| US7354368B2 (en) | Method and means for shifting a hydromechanical transmission | |
| JP5083638B2 (en) | Control device | |
| CN101216101B (en) | Hydraulic-mechanical transmission engineering machinery automatic shifting speed variator and control method | |
| US8292781B2 (en) | Powertrain control method and system | |
| CN101576738B (en) | Power matching control system for novel energy-saving double-drum vibratory roller | |
| CN107364440B (en) | Hybrid power car pure electric vehicle starting-up process control method | |
| TWI444550B (en) | Method and system for controlling hydraulic apparatus for continuously variable transmission of hybrid vehicle system | |
| CN101196233A (en) | Engine speed control for a low power hydromechanical transmission | |
| EP2474457B1 (en) | Speed ratio control method for cvt of electric vehicle | |
| JP2001108098A (en) | Lower-limit speed control device for hydromechanical driving device, and its operating method | |
| JP2001193833A (en) | Method and device for shifting range of continuously variable transmission | |
| CN102092385A (en) | Automatic gear shifting strategy for electric vehicles | |
| CN102939215B (en) | Accelerator pedal legpower control setup | |
| EP2642166A1 (en) | Control device and control method for continuously variable transmission | |
| CN112622871B (en) | Gear shifting control method of hybrid power system | |
| CN106594268A (en) | Method and apparatus to control a continuously variable transmission | |
| CN101994823A (en) | Automatic transmission control apparatus | |
| US10358135B2 (en) | Operating method for a vehicle drive train of a working machine including a drive motor, a transmission and an output | |
| CN101617147B (en) | A method for operating an automatic or semi-automatic transmission of a heavy vehicle when in idle-driving mode | |
| CN112664650B (en) | Gear shifting control method and system for hydrostatic automatic AT gearbox | |
| CN103836181A (en) | Loader static pressure transmission control system | |
| CN102257297A (en) | Driving force control device | |
| EP2802795B1 (en) | Method of controlling gear ratio rate of change in continuously variable transmission | |
| CN102906468B (en) | A control system for a vehicle drivetrain |
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 |