CN109538361A - A method of prevent engineering machinery load from generating failure when starting - Google Patents
A method of prevent engineering machinery load from generating failure when starting Download PDFInfo
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- CN109538361A CN109538361A CN201811452386.4A CN201811452386A CN109538361A CN 109538361 A CN109538361 A CN 109538361A CN 201811452386 A CN201811452386 A CN 201811452386A CN 109538361 A CN109538361 A CN 109538361A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
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- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a kind of methods for preventing engineering machinery load from generating failure when starting, and first by the absorption power ascension of hydraulic main pump to the first performance number, and judge whether the absorption power of hydraulic main pump needs to decline；The output power of electronic controlled diesel is promoted to the second performance number again, and judges whether the absorption power of hydraulic main pump needs to decline；Finally by the absorption power ascension of hydraulic main pump to operating power；Continue the absorption power ascension of hydraulic main pump to third performance number, and judges whether the absorption power of hydraulic main pump needs to decline；Wherein, preceding judgement three times is both needed to be decided whether to be adjusted the absorption power of hydraulic main pump according to judging result.The output power of engine is risen to its operating power in four times by the present invention, and the absorption power of hydraulic main pump can be adjusted when the absorption power of hydraulic main pump and the power of diesel engine mismatch, the load for reducing diesel engine early stage avoids diesel engine load from generating the failures such as over-emitting black exhaust when starting.
Description
Technical field
The present invention relates to technical field of engineering machinery, and particularly, being related to one kind prevents engineering machinery from loading generation when starting
The method of failure.
Background technique
Horsepower/torque of hydraulic main pump of the engineering machinery such as excavator, horizontal directional drilling machine, rotary drilling rig etc. has been set
It is good, so the absorption power of hydraulic pump will be by the rate fast direct set in the starting that engineering machinery loads suddenly
Line rises to operating power, as shown in Figure 1.But electric-control diesel engine is when accelerating, especially in high altitude localities or low
Under temperature, is influenced to will lead to accelerator by atmospheric density or hydraulic oil viscosity etc. and be smoldered seriously, influence the normal of engineering machinery
The service life of work and complete machine, and diesel engine is smoldered and be can cause environmental pollution.
Chinese patent ZL2011110441939.8 discloses the power control system of a kind of engineering machinery and non-electrical control hydraulic pump
System and control method, the control system include power governor, which connect with executive component, and pass through the respectively
One signal oil passage connected with second signal oil channel non-electrical control hydraulic pump the first signal oil input port and second signal oil it is defeated
Entrance, to control the discharge capacity of non-electrical control hydraulic pump according to load pressure, the second signal oil input port of non-electrical control hydraulic pump and non-
Third signal oil passage is also set up between the delivery outlet of electrical control hydraulic pump, third signal oil passage is provided with electric control valve, the control
The control terminal of valve processed connects a control module.Control method includes: to judge the working condition of engine；According to engine
Working condition controls the non-electrical control hydraulic pump and switches under corresponding operating mode.The control system and control method can
Realize the secondary adjustment of non-electrical control hydraulic pump.
Chinese patent ZL2011103863983 discloses the Load sensing pump of a kind of electric-control motor and volume adjustable hydraulic pump
System, which includes: electric-control motor；Engine controller, for measuring the actual speed of electric-control motor；Movement controller,
For the rotating speed of target of the actual speed and acquisition, actual speed is less than rotating speed of target, and rotating speed of target and practical turn
Difference between speed is greater than the threshold value of setting, then according to the size of difference, exports fine tuning of corresponding size to proportion magnetic valve
Electric current；Proportion magnetic valve tunes up the aperture of itself valve according to by the size of the fine-adjusting current received；Volume adjustable hydraulic pump exists
The lower operation of the power effect of electric-control motor.The system makes the revolving speed of electric-control motor by reducing the load of electric-control motor
Gone up, reduces the oil consumption for adjusting electric-control motor revolving speed by engine controller, while but also volume adjustable hydraulic pump
Stabilization is run on electric-control motor optimal power point.Above two control system does not provide solution diesel engine machinery and adds
Carry the specific solving methods of over-emitting black exhaust when starting.
Summary of the invention
It is existing to solve the purpose of the present invention is to provide a kind of method for preventing engineering machinery load from generating failure when starting
There are diesel engine and hydraulic pump power in starting process to mismatch, and leads to over-emitting black exhaust occur when diesel engine load starting
The problem of.
To achieve the above object, the present invention provides it is a kind of prevent engineering machinery load start when generate failure method,
The following steps are included:
Step S1: first by the absorption power ascension of hydraulic main pump 5 to the first performance number, and the Hydraulic Main is judged for the first time
Whether the absorption power of pump needs to decline；As the absorption power of the hydraulic main pump maintains the first performance number whithin a period of time
Within, then keep the absorption power of the hydraulic main pump constant；As the absorption power of the hydraulic main pump is held whithin a period of time
It is continuous to be greater than the first performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S2: again by the absorption power ascension of the hydraulic main pump to the second performance number, and the liquid is judged for the second time
Whether the absorption power of pressure main pump needs to decline；As the absorption power of the hydraulic main pump maintains the second function whithin a period of time
Within rate value, then keep the absorption power of the hydraulic main pump constant；If the absorption power of the hydraulic main pump is in a period of time
Inside persistently it is greater than the second performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S3: continue the absorption power ascension of the hydraulic main pump to third performance number, and described in third time judgement
Whether the absorption power of hydraulic main pump needs to decline；As the absorption power of the hydraulic main pump maintains third whithin a period of time
Within performance number, then keep the absorption power of the hydraulic main pump constant；If the absorption power of the hydraulic main pump is at one section
It is interior to be persistently greater than third performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S4: finally by the absorption power ascension of the hydraulic main pump to operating power；
Wherein, the first performance number is the 40%~60% of the operating power, and second performance number is the work function
The 75%~85% of rate, the third performance number are the 90%~95% of the operating power；The step S1, step S2 and step
A period of time in rapid S3 is 10~30ms.
Further, in the step S1, such as the absorption power of the hydraulic main pump is greater than first performance number, then will
The value of the absorption power decreasing of the hydraulic main pump is the 6%~8% of the operating power；
In the step S2, such as the absorption power of the hydraulic main pump is greater than second performance number, then will be described hydraulic
The value of the absorption power decreasing of main pump is the 15%~20% of the operating power；
In the step S3, the absorption power that such as third performance number is less than the hydraulic main pump then will be described hydraulic
The value of the absorption power decreasing of main pump is the 25%~30% of the operating power.
Further, first performance number is the 50% of the operating power, and second performance number is the work
The 80% of power, second performance number are the operating power 92%.
Further, the starting control system of the engineering machinery includes instrument display, master controller, engine control
Device, electric-control diesel engine, hydraulic main pump and electric proportional control valve, the instrument display and engine controller difference
Be connected with the master controller, the electric-control diesel engine is connected with the engine controller, the hydraulic main pump it is defeated
Enter end to be connected with the output end of the electric-control diesel engine, the electric proportional control valve and the master controller and described hydraulic
Main pump is respectively connected with；During startup, the engine controller monitors the enabling signal of the diesel engine, and by institute
The enabling signal for stating diesel engine feeds back to the master controller, and the master controller is according to the electric-control diesel engine
Starting duration adjusts the size of current of the electric proportional control valve, and the size of the input current of the electric proportional control valve can be adjusted
The climbing speed of the absorption power of the whole hydraulic main pump.
Further, the hydraulic main pump is swash plate plunger pump, and the input terminal of the swash plate plunger pump passes through shaft coupling
Device is connected with the output shaft of the electric-control diesel engine；The oil outlet and swash plate variable regulating mechanism of the electric proportional control valve
Oil inlet be connected, to control the angle of the swash plate.
Further, the engineering machinery is excavator, horizontal directional drilling machine or rotary drilling rig.
Compared with the prior art, the invention has the following advantages:
A kind of method for preventing engineering machinery load from generating failure when starting of the invention, by the absorption power of hydraulic main pump
Its operating power is risen in four times, and repeatedly judges the power of the absorption power and diesel engine of hydraulic main pump in the process
Whether match, and can absorption when the power for absorbing power and diesel engine of hydraulic main pump is mismatched to hydraulic main pump
Power is adjusted, and when avoiding loading starting suddenly, the absorption power ascension of electric-control diesel engine is too fast, and causes automatically controlled bavin
Oil turbine generates the failures such as over-emitting black exhaust, noise and fever, so that electric-control diesel engine is easier to start up.Side of the invention
Method improves work efficiency, and reduces the energy consumption of engineering machinery.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
The absorption power curve of Fig. 1 hydraulic main pump when being engineering machinery starting in the prior art；
Fig. 2 is the absorption power curve of hydraulic main pump when the engineering machinery load in an embodiment of the present invention starts；
Fig. 3 is the schematic diagram of the start control system of the engineering machinery in an embodiment of the present invention；
Wherein, 1, instrument display, 2, master controller, 3, engine controller, 4, electric-control diesel engine, 5, Hydraulic Main
Pump, 6, electric proportional control valve.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
Referring to fig. 2, a kind of method for preventing engineering machinery load from generating failure when starting of the invention, including following step
It is rapid:
Step S1: first by the absorption power ascension of hydraulic main pump 5 to the first performance number, and hydraulic main pump is judged for the first time
Absorb whether power needs to decline；If the absorption power of hydraulic main pump is maintained whithin a period of time within the first performance number, then
Keep the absorption power of hydraulic main pump constant；As the absorption power of hydraulic main pump is persistently greater than the first power whithin a period of time
Value, then by the absorption power decreasing of hydraulic main pump；The absorption power of hydraulic main pump maintains the first performance number whithin a period of time
Within specifically refer to: the absorption power of hydraulic main pump is less than or equal to the suction of the first performance number or hydraulic main pump whithin a period of time
Receive power only at a time or certain several moment be greater than the first performance number.
Step S2: again by the absorption power ascension of hydraulic main pump to the second performance number, and hydraulic main pump is judged for the second time
Absorb whether power needs to decline；If the absorption power of hydraulic main pump is maintained whithin a period of time within the second performance number, then
Keep the absorption power of hydraulic main pump constant；As the absorption power of hydraulic main pump is persistently greater than the second power whithin a period of time
Value, then by the absorption power decreasing of hydraulic main pump；The absorption power of hydraulic main pump maintains the second performance number whithin a period of time
Within specifically refer to: the absorption power of hydraulic main pump is less than or equal to the suction of the second performance number or hydraulic main pump whithin a period of time
Receive power only at a time or certain several moment be greater than the second performance number.
Step S3: continue the absorption power ascension of hydraulic main pump to third performance number, and third time judges hydraulic main pump
Absorption power whether need to decline；If the absorption power of hydraulic main pump is maintained whithin a period of time within third performance number,
Then keep the absorption power of hydraulic main pump constant；As the absorption power of hydraulic main pump is persistently greater than third power whithin a period of time
Value, then by the absorption power decreasing of hydraulic main pump；The absorption power of hydraulic main pump maintains third performance number whithin a period of time
Within specifically refer to: the absorption power of hydraulic main pump is less than or equal to the suction of third performance number or hydraulic main pump whithin a period of time
Receive power only at a time or certain several moment be greater than third performance number.
Step S4: finally by the absorption power ascension of hydraulic main pump to operating power；
Wherein, the first performance number be operating power 40%~60%, the second performance number be operating power 75%~
85%, third performance number is the 90%~95% of operating power；A period of time in the step S1, step S2 and step S3 is equal
For 10~30ms.
In a kind of specific embodiment, in step S1, the absorption power that such as the first performance number is less than hydraulic main pump, then
It is operating power 6%~8% by the absorption power decreasing value of hydraulic main pump；
In step S2, the absorption power that such as the second performance number is less than hydraulic main pump then will be under the absorption power of hydraulic main pump
Tone pitch is operating power 15%~20%；
It, then will be under the absorption power of hydraulic main pump if third performance number is less than the absorption power of hydraulic main pump in step S3
Tone pitch is operating power 25%~30%.
In a kind of specific embodiment, the first performance number is the 50% of operating power, and the second performance number is work function
The 80% of rate, third performance number are operating power 92%.
In the present embodiment, a method of prevent engineering machinery load from generating failure when starting, comprising:
1, first by the absorption power ascension of hydraulic main pump to the 50% of operating power, and the suction of hydraulic main pump is judged for the first time
Receive whether power needs to decline；Master controller continuously judges 20ms to the absorption power of hydraulic main pump, at this point, the suction of hydraulic main pump
It receives power and is greater than the first performance number 8%, then by the absorption power decreasing of hydraulic main pump to the first performance number；
2, by the absorption power ascension of hydraulic main pump to the 80% of operating power, and the absorption of hydraulic main pump is judged for the second time
Whether power, which needs, declines；Master controller continuously judges 20ms to the absorption power of hydraulic main pump, at this point, the absorption of hydraulic main pump
Power is greater than the second performance number 18%, then by the absorption power decreasing of hydraulic main pump to the second performance number；
3, continue the absorption power ascension of hydraulic main pump to the 92% of operating power, and third time judges hydraulic main pump
Absorb whether power needs to decline；Master controller continuously judges 20ms to the absorption power of hydraulic main pump, at this point, hydraulic main pump
It absorbs power and is greater than the second performance number 30%, then by the absorption power decreasing of hydraulic main pump to third performance number；
4, the absorption power of hydraulic main pump is finally promoted 8% to operating power again.
In the above method absorption power of hydraulic main pump is risen into its operating power in four times, and repeatedly sentenced in the process
Break the absorption power of hydraulic main pump and whether the power of electric-control diesel engine matches, and can be in the absorption power of hydraulic main pump
The absorption power of hydraulic main pump is adjusted when being mismatched with the power of electric-control diesel engine, avoids loading starting suddenly
When, the absorption power of electric-control diesel engine is quicklyd increase in operating power, and cause electric-control diesel engine generate over-emitting black exhaust,
Electric-control diesel engine is easier to start up in the problems such as noise and fever, and will not extend the starting of electric-control diesel engine
Time.
As shown in figure 3, the starting control system of the engineering machinery of the present embodiment include instrument display 1, master controller 2,
Engine controller 3, electric-control diesel engine 4, hydraulic main pump 5 and electric proportional control valve 6, instrument display and engine control
Device is connected with master controller respectively, and electric-control diesel engine is connected with engine controller, the input terminal of hydraulic main pump with it is automatically controlled
The output end of diesel engine is connected, and electric proportional control valve is respectively connected with master controller and hydraulic main pump.The side of the present embodiment
Method process: when diesel engine is loaded and started, by master controller and electric proportional control valve by the absorption power of hydraulic main pump
It is promoted to the 50% of its operating power, at this point, judge whether the absorption power of hydraulic main pump needs to decline for the first time, if desired,
Then accordingly does not need such as being turned down the absorption power of hydraulic main pump by electric proportional control valve, then keep the suction of hydraulic main pump
It is constant to receive power；By master controller and electric proportional control valve by the absorption power ascension of hydraulic main pump to its operating power
80%, at this point, judging whether the absorption power of hydraulic main pump needs to decline for the second time, if desired, passing through electric proportional control valve again
The absorption power of hydraulic main pump is adjusted；It is further continued for the absorption of hydraulic main pump through master controller and electric proportional control valve
Power ascension is to the 92% of its operating power, at this point, third time judges whether the absorption power of hydraulic main pump needs to decline, if you need to
It wants, then is adjusted by absorption power of the electric proportional control valve to hydraulic main pump；Diesel oil will finally be sent out by master controller
The output power of motivation is promoted to its operating power.
In the present embodiment, hydraulic main pump 5 is swash plate plunger pump, the input terminal of swash plate plunger pump by shaft coupling with
The output shaft of electric-control diesel engine is connected；The oil inlet phase of the oil outlet of electric proportional control valve and swash plate variable regulating mechanism
Even, to control the angle of swash plate.
In the present embodiment, engineering machinery is excavator, horizontal directional drilling machine or rotary drilling rig.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of method for preventing engineering machinery load from generating failure when starting, which comprises the following steps:
Step S1: first by the absorption power ascension of hydraulic main pump (5) to the first performance number, and the hydraulic main pump is judged for the first time
Absorption power whether need to decline；As the hydraulic main pump absorption power maintain whithin a period of time the first performance number with
It is interior, then keep the absorption power of the hydraulic main pump constant；As the absorption power of the hydraulic main pump continues whithin a period of time
Greater than the first performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S2: again by the absorption power ascension of the hydraulic main pump to the second performance number, and the Hydraulic Main is judged for the second time
Whether the absorption power of pump needs to decline；As the absorption power of the hydraulic main pump maintains the second performance number whithin a period of time
Within, then keep the absorption power of the hydraulic main pump constant；As the absorption power of the hydraulic main pump is held whithin a period of time
It is continuous to be greater than the second performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S3: continuing the absorption power ascension of the hydraulic main pump to third performance number, and judges for the third time described hydraulic
Whether the absorption power of main pump needs to decline；As the absorption power of the hydraulic main pump maintains third power whithin a period of time
Within value, then keep the absorption power of the hydraulic main pump constant；As the hydraulic main pump absorption power whithin a period of time
Persistently it is greater than third performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S4: finally by the absorption power ascension of the hydraulic main pump to operating power；
Wherein, the first performance number is the 40%~60% of the operating power, and second performance number is the operating power
75%~85%, the third performance number is the 90%~95% of the operating power；The step S1, step S2 and step S3
In a period of time be 10~30ms.
2. the method according to claim 1 for preventing engineering machinery load from generating failure when starting, which is characterized in that
In the step S1, such as the absorption power of the hydraulic main pump is greater than first performance number, then by the hydraulic main pump
Absorption power decreasing value be the operating power 6%~8%；
In the step S2, such as the absorption power of the hydraulic main pump is greater than second performance number, then by the hydraulic main pump
Absorption power decreasing value be the operating power 15%~20%；
In the step S3, the absorption power that such as third performance number is less than the hydraulic main pump, then by the hydraulic main pump
Absorption power decreasing value be the operating power 25%~30%.
3. the method according to claim 2 for preventing engineering machinery load from generating failure when starting, which is characterized in that described
First performance number is the 50% of the operating power, and second performance number is the 80% of the operating power, the third function
Rate value is the operating power 92%.
4. the method according to any one of claim 1-3 for preventing engineering machinery load from generating failure when starting, special
Sign is that the starting control system of the engineering machinery includes instrument display (1), master controller (2), engine controller
(3), electric-control diesel engine (4), hydraulic main pump (5) and electric proportional control valve (6), the instrument display and the engine
Controller is connected with the master controller respectively, and the electric-control diesel engine is connected with the engine controller, the liquid
The input terminal of pressure main pump is connected with the output end of the electric-control diesel engine, the electric proportional control valve and the master controller
It is respectively connected with the hydraulic main pump；During startup, the engine controller monitors the electric-control diesel engine
Enabling signal, and the enabling signal of the diesel engine is fed back into the master controller, the master controller is according to
The starting duration of electric-control diesel engine adjusts the size of current of the electric proportional control valve, the input of the electric proportional control valve
The size of electric current can adjust the climbing speed of the absorption power of the hydraulic main pump.
5. the method according to claim 4 for preventing engineering machinery load from generating failure when starting, which is characterized in that described
Hydraulic main pump (5) is swash plate plunger pump, and the input terminal of the swash plate plunger pump is sent out by shaft coupling and the electric control diesel
The output shaft of motivation is connected；The oil outlet of the electric proportional control valve is connected with the oil inlet of swash plate variable regulating mechanism, with control
Make the angle of the swash plate.
6. the method according to claim 1 for preventing engineering machinery load from generating failure when starting, which is characterized in that described
Engineering machinery is excavator, horizontal directional drilling machine or rotary drilling rig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452386.4A CN109538361B (en) | 2018-11-30 | 2018-11-30 | Method for preventing faults generated during loading and starting of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452386.4A CN109538361B (en) | 2018-11-30 | 2018-11-30 | Method for preventing faults generated during loading and starting of engineering machinery |
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| CN109538361A true CN109538361A (en) | 2019-03-29 |
| CN109538361B CN109538361B (en) | 2021-04-27 |
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| CN109538361B (en) | 2021-04-27 |
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