CN103470573A - Oil supply and drainage control equipment, system and method for pumping units and engineering machine - Google Patents
Oil supply and drainage control equipment, system and method for pumping units and engineering machine Download PDFInfo
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- CN103470573A CN103470573A CN2013103964790A CN201310396479A CN103470573A CN 103470573 A CN103470573 A CN 103470573A CN 2013103964790 A CN2013103964790 A CN 2013103964790A CN 201310396479 A CN201310396479 A CN 201310396479A CN 103470573 A CN103470573 A CN 103470573A
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Abstract
The invention discloses oil supply and drainage control equipment, system and method for pumping units and an engineering machine. The equipment comprises a receiver and a controller. The receiver is used for receiving reversing signals indicating a pumping unit to reverse and pulse signals indicating that a concrete cylinder piston in the pumping unit operates in position. The controller is used for determining the number of pulse variation of the pulse signals during the period of at least two adjacent reversing signals, and controlling oil supply and drainage for the pumping unit according to the determined number of pulse variation. According to the technical scheme, whether travel of the concrete cylinder piston is in position or not can be judged through one travel detection sensor, so that oil supply and drainage is controlled for the pumping unit. The system is low in modification cost, low in cost, easy to implement and high in reliability.
Description
Technical field
The present invention relates to engineering machinery, particularly, relate to a kind of equipment, system, method and engineering machinery of being controlled for pumping unit mending to draining.
Background technique
Concrete pumping equipment is the high pressure concrete conveying equipment, and hydraulic fluid leak or too much situation often appear in pumping system when operation, causes oil cylinder operation stroke to change, and has reduced pump-conveying property, even causes device damage.For this reason, need to be mended draining to hydraulic system of pump and be controlled, repairing when leaking appears in hydraulic oil, draining when hydraulic oil is too much, to improve the equipment availability performance.
Want to realize the benefit draining control to hydraulic system, need to know concrete cylinder piston stroke.The method of existing detection concrete cylinder piston stroke is that stroke sensor is installed in piston rod, but this detecting method need to be carried out larger transformation to existing pumping system, and difficult in maintenance, increases construction cost simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of equipment, system, method and engineering machinery of being controlled for pumping unit mending to draining, control thereby realize mending draining with lower system reform cost and cost.
To achieve these goals, the invention provides a kind of equipment of being controlled for pumping unit mending to draining, this equipment comprises: receiver, for receiving the commutation signal of indicating described pumping unit to be commutated and meaning the pulse signal that described pumping unit concrete cylinder piston operation puts in place; And controller, for determining the pulse change number of times of described pulse signal during at least adjacent two commutation signal, and according to determined pulse change number of times, described pumping unit is mended to draining and controlled.
The present invention also provides a kind of system of being controlled for pumping unit mending to draining, described pumping unit comprises oil cylinder, concrete cylinder and water tank, described in-oil cylinder oil cylinder piston is connected via the piston rod through described water tank with the concrete cylinder piston in described concrete cylinder, this system comprises: induction pieces, be installed on described piston rod, and with described piston rod motion; The stroke detection sensor, in the situation that the operation of described concrete cylinder piston puts in place, the trip detecting sensor can detect described induction pieces, and output means the pulse signal that described concrete cylinder piston operation puts in place; Commutation sensors, the commutation signal commutated for exporting the described pumping unit of indication; And above-mentioned benefit draining control apparatus, with described stroke detection sensor, with described commutation sensors, be connected.
The present invention also provides a kind of engineering machinery that comprises said system.
The present invention also provides a kind of method of being controlled for pumping unit mending to draining, and the method comprises: receive the commutation signal of indicating described pumping unit to be commutated and mean the pulse signal that in described pumping unit, the operation of concrete cylinder piston puts in place; And the pulse change number of times of determining described pulse signal during at least adjacent two commutation signal, and according to determined pulse change number of times, described pumping unit is mended to draining and controlled.
In technique scheme, only adopt a stroke detection sensor just can realize the judgement whether concrete cylinder piston stroke is put in place, thereby being mended to draining, pumping unit controls.The transformation cost of whole system is little, and cost is low, is easy to realize, reliability is high.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
The accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms the part of specification, is used from explanation the present invention with following embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 be according to the embodiment of the present invention for pumping unit being mended to the structural drawing of the system that draining controls;
Fig. 2 be according to the embodiment of the present invention for pumping unit being mended to the structural drawing of the equipment that draining controls;
Fig. 3 to Fig. 5 show respectively in the situation that concrete cylinder piston operation put in place, not in place and cross and put in place, the output signal schematic diagram of the first commutation sensors, the second commutation sensors and stroke detection sensor; And
Fig. 6 show according to the embodiment of the present invention for pumping unit being mended to the flow chart of the method that draining controls.
Description of reference numerals
1 first concrete cylinder 2 second concrete cylinder 3 first oil cylinder 4 second oil cylinders
5 first concrete cylinder piston 6 second concrete cylinder piston 7 first oil cylinder pistons
8 second oil cylinder piston 9 first piston connecting rod 10 second piston rods
11 water tank 12 induction pieces 13 pumping units are mended the draining control apparatus
1301 receiver 1302 controller A the first commutation sensors
B the second commutation sensors C stroke detection sensor
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
Fig. 1 show according to the embodiment of the present invention for pumping unit being mended to the structural drawing of the system that draining controls.As shown in Figure 1, described pumping unit can comprise: the first concrete cylinder 1, the second concrete cylinder 2, the first oil cylinder 3, the second oil cylinder 4 and water tank 11, the first oil cylinder piston 7 in described the first oil cylinder 3 is connected via the first piston connecting rod 9 through described water tank 11 with the first concrete cylinder piston 5 in described the first concrete cylinder 1, and the second oil cylinder piston 8 in described the second oil cylinder 4 is connected via the second piston rod 10 through described water tank 11 with the second concrete cylinder piston 6 in described the second concrete cylinder 2.Described system can comprise: induction pieces 12, be installed on described first piston connecting rod 9, and with described first piston connecting rod 9 motions; Stroke detection sensor C, in the situation that described the first concrete cylinder piston 5 operations put in place (the desirable stroke of concrete cylinder piston arrives or predetermined stroke), the trip detecting sensor C can detect described induction pieces 12, and output means the pulse signal that described the first concrete cylinder piston 5 operations put in place; Commutation sensors, the commutation signal commutated for exporting the described pumping unit of indication; And pumping unit benefit draining control apparatus 13, with described commutation sensors and described stroke detection sensor C, be connected, for pumping unit being mended to draining, control.
Described commutation sensors can for example comprise the first commutation sensors A, is installed on described the first oil cylinder 3, in the situation that described the first oil cylinder piston 7 detected, exporting the first commutation signal; And the second commutation sensors B, be installed on described the second oil cylinder 4, in the situation that described second oil cylinder piston 8 output the second commutation signal detected.Should be understood that, the commutation sensors that for example, for example, triggers commutation by detecting miscellaneous part (, concrete cylinder piston) or parameter (, in-oil cylinder pressure) also can be used.
In addition, although top, induction pieces 12 is installed on first piston connecting rod 9, is understandable that, this induction pieces 12 also can be installed on the second piston rod 10.The rigging position of induction pieces 12 needs to coordinate mutually with the position of stroke detection sensor C, that is, when the operation of concrete cylinder piston puts in place, the trip detecting sensor C can sense described induction pieces 12.
Thus, only adopt a stroke detection sensor just can realize the judgement whether concrete cylinder piston stroke is put in place, controlled thereby pumping unit mends to draining.The transformation cost of whole system is little, and cost is low, is easy to realize, reliability is high.
Described pumping unit is mended draining control apparatus 13 can comprise receiver 1301 and controller 1302, as shown in Figure 2.Described receiver 1301 for example, for (receiving the commutation signal that commutated of the described pumping unit of indication, via the first commutation signal of the first commutation sensors A output and the second commutation signal of exporting via the second commutation sensors B) and mean the pulse signal (via stroke detection sensor C output) that concrete cylinder piston in described pumping unit (for example, the first concrete cylinder piston 5) operation puts in place; And described controller 1302 for example, for (determining during at least adjacent two commutation signal, during described the first commutation signal and described the second commutation signal) the pulse change number of times of described pulse signal, and according to determined pulse change number of times, described pumping unit is mended to draining and control.
Below describe controller 1302 in detail and how according to the pulse change number of times, to determine whether concrete cylinder piston moves the method that puts in place and pumping unit is mended to draining control.
In the situation that the first concrete cylinder piston 5 operations put in place, the second commutation signal of the first commutation signal of the first commutation sensors A output, the second commutation sensors B output and the pulse signal of stroke detection sensor C output are as shown in Figure 3.As can be seen from Figure 3, when the second commutation sensors B produces the second commutation signal, stroke detection sensor C also just in time in induction of signal, just detects induction pieces 12.Until the first commutation sensors A produce the first commutation signal during this period of time in, the pulse change number of times of the pulse signal of stroke detection sensor C output is 1 time (that is, a trailing edge only being arranged).
In the situation that the first concrete cylinder piston 5 operations are not in place, the second commutation signal of the first commutation signal of the first commutation sensors A output, the second commutation sensors B output and the pulse signal of stroke detection sensor C output are as shown in Figure 4.As can be seen from Figure 4, stroke detection sensor C no signal output always, the pulse change number of times of the pulse signal of output is 0 time.
In the situation that the first concrete cylinder piston 5 moves, put in place, the second commutation signal of the first commutation signal of the first commutation sensors A output, the second commutation sensors B output and the pulse signal of stroke detection sensor C output are as shown in Figure 5.As can be seen from Figure 5, when the second commutation sensors B produces the second commutation signal, the output of stroke detection sensor C no signal, but after the second commutation sensors B produces the second commutation signal, while to the first commutation sensors A, producing the first commutation signal during this period of time in, twice variation (that is, a rising edge and a trailing edge being arranged) occurs in the pulse signal of stroke detection sensor C output.
So, controller 1302 just can pass through the pulse change number of times of the pulse signal of the stroke detection sensor C during judgement the first commutation signal and the second commutation signal, determine whether current concrete cylinder piston moves and put in place, and based on this pumping unit is mended to draining and control.
When pumping unit being mended to draining control, can consider the connectivity types of pumping unit.Particularly, in the situation that the pulse change number of times of described pulse signal is 0, if the connectivity types of described pumping unit is rodless cavity, be communicated with, 1302 pairs of described pumping units of described controller carry out draining; If the connectivity types of described pumping unit is rod chamber, be communicated with, 1302 pairs of described pumping units of described controller carry out repairing; And, in the situation that the pulse change number of times of described pulse signal is 2, if the connectivity types of described pumping unit is rodless cavity, be communicated with, 1302 pairs of described pumping units of described controller carry out repairing; If the connectivity types of described pumping unit is rod chamber, be communicated with, 1302 pairs of described pumping units of described controller carry out draining.In addition, if the pulse change number of times of described pulse signal is 1, show that the operation of concrete cylinder piston puts in place, now do not need that pumping unit is mended to draining and control.
Fig. 6 show according to the embodiment of the present invention for pumping unit being mended to the flow chart of the method that draining controls.As shown in Figure 6, the method can comprise: step 601 receives the commutation signal of indicating described pumping unit to be commutated and means the pulse signal that in pumping unit, the operation of concrete cylinder piston puts in place.Step 602, determine the pulse change number of times of described pulse signal during adjacent two commutation signal.If described change frequency is 0, mean that the operation of concrete cylinder piston is not in place; If described change frequency is 1, mean that the operation of concrete cylinder piston puts in place; If described change frequency is 2, mean that concrete cylinder piston moved to put in place.In the situation that described concrete cylinder piston operation puts in place, do not need that pumping unit is mended to draining and control (that is, step 604).And, in the situation that described concrete cylinder piston moves not in place and crosses and put in place, can be mended draining to pumping unit in conjunction with the connectivity types of pumping unit and control.For example, in the situation that described change frequency is 0, step 603, determine the connectivity types of pumping unit.If rodless cavity is communicated with, step 606, carry out draining to pumping unit; If rod chamber is communicated with, step 607, carry out repairing to pumping unit.And, in the situation that described change frequency is 2, step 605, determine the connectivity types of pumping unit.If rod chamber is communicated with, step 608, carry out draining to pumping unit; If rodless cavity is communicated with, step 609, carry out repairing to pumping unit.Finally, step 610, judge whether to quit work.If, finishing control process; Otherwise, be back to step 601 and continue control procedure.
Should be understood that, although above-described method is by determining during adjacent two commutation signal that the pulse change number of times of described pulse signal judges whether concrete cylinder piston moves and puts in place, but the invention is not restricted to this, also can judge by the pulse change number of times of determining the pulse signal during three commutation signal, four commutation signal etc. whether concrete cylinder piston moves to put in place.
By technique scheme, only adopt a stroke detection sensor just can realize the judgement whether concrete cylinder piston stroke is put in place, thereby being mended to draining, pumping unit controls.The transformation cost of whole system is little, and cost is low, is easy to realize, reliability is high.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned mode of execution; in technical conceive scope of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, between various mode of execution of the present invention, also can carry out combination in any, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. an equipment of being controlled for pumping unit mending to draining, is characterized in that, this equipment comprises:
Receiver, for receiving the commutation signal of indicating described pumping unit to be commutated and meaning the pulse signal that described pumping unit concrete cylinder piston operation puts in place; And
Controller, for determining the pulse change number of times of described pulse signal during at least adjacent two commutation signal, and mended draining according to determined pulse change number of times to described pumping unit and controlled.
2. equipment according to claim 1, is characterized in that, described controller is also mended draining for the connectivity types according to described pumping unit to described pumping unit and controlled.
3. equipment according to claim 2, is characterized in that, described controller is mended draining according to following mode to described pumping unit and controlled:
In the situation that during adjacent two commutation signal, the pulse change number of times of described pulse signal is 0,
If the connectivity types of described pumping unit is rodless cavity, be communicated with, described controller carries out draining to described pumping unit;
If the connectivity types of described pumping unit is rod chamber, be communicated with, described controller carries out repairing to described pumping unit; And
In the situation that during adjacent two commutation signal, the pulse change number of times of described pulse signal is 2,
If the connectivity types of described pumping unit is rodless cavity, be communicated with, described controller carries out repairing to described pumping unit;
If the connectivity types of described pumping unit is rod chamber, be communicated with, described controller carries out draining to described pumping unit.
4. a system of being controlled for pumping unit mending to draining, described pumping unit comprises oil cylinder, concrete cylinder and water tank, described in-oil cylinder oil cylinder piston is connected via the piston rod through described water tank with the concrete cylinder piston in described concrete cylinder, it is characterized in that, this system comprises:
Induction pieces, be installed on described piston rod, and with described piston rod motion;
The stroke detection sensor, in the situation that the operation of described concrete cylinder piston puts in place, the trip detecting sensor can detect described induction pieces, and output means the pulse signal that described concrete cylinder piston operation puts in place;
Commutation sensors, the commutation signal commutated for exporting the described pumping unit of indication; And
According to the described equipment of arbitrary claim in claim 1-3, with described stroke detection sensor, with described commutation sensors, be connected.
5. an engineering machinery that comprises system claimed in claim 4.
6. a method of being controlled for pumping unit mending to draining, is characterized in that, the method comprises:
Receive the commutation signal of indicating described pumping unit to be commutated and mean the pulse signal that in described pumping unit, the operation of concrete cylinder piston puts in place; And
Determine the pulse change number of times of described pulse signal during at least adjacent two commutation signal, and according to determined pulse change number of times, described pumping unit is mended to draining and control.
7. method according to claim 6, is characterized in that, the method also comprises that according to the connectivity types of described pumping unit, described pumping unit being mended to draining controls.
8. method according to claim 7, is characterized in that, according to following mode, described pumping unit mended to draining and control:
In the situation that during adjacent two commutation signal, the pulse change number of times of described pulse signal is 0,
Be communicated with if the connectivity types of described pumping unit is rodless cavity, described pumping unit carried out to draining;
Be communicated with if the connectivity types of described pumping unit is rod chamber, described pumping unit carried out to repairing; And
In the situation that during adjacent two commutation signal, the pulse change number of times of described pulse signal is 2,
Be communicated with if the connectivity types of described pumping unit is rodless cavity, described pumping unit carried out to repairing;
Be communicated with if the connectivity types of described pumping unit is rod chamber, described pumping unit carried out to draining.
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| CN103758826A (en) * | 2014-01-23 | 2014-04-30 | 中国重型机械研究院股份公司 | Liquid feed system of high-capacity pump |
| CN105317788A (en) * | 2014-07-25 | 2016-02-10 | 中联重科股份有限公司 | Stroke control system, method and device for concrete pumping equipment and tandem oil cylinders |
| CN109139044A (en) * | 2018-07-17 | 2019-01-04 | 山东科技大学 | A kind of mining anti-pulse system of delivering concrete duplex plunger pump |
| CN114687980A (en) * | 2020-12-29 | 2022-07-01 | 三一汽车制造有限公司 | Pumping equipment, pumping system and reversing parameter adjusting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109139044A (en) * | 2018-07-17 | 2019-01-04 | 山东科技大学 | A kind of mining anti-pulse system of delivering concrete duplex plunger pump |
| CN114687980A (en) * | 2020-12-29 | 2022-07-01 | 三一汽车制造有限公司 | Pumping equipment, pumping system and reversing parameter adjusting method thereof |
| CN114687980B (en) * | 2020-12-29 | 2023-10-10 | 三一汽车制造有限公司 | Pumping equipment, pumping system and reversing parameter adjusting method thereof |
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