CN105840587B - Oil supplementing and draining control equipment, system and method for pumping device and engineering machinery - Google Patents
Oil supplementing and draining control equipment, system and method for pumping device and engineering machinery Download PDFInfo
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- CN105840587B CN105840587B CN201510013861.8A CN201510013861A CN105840587B CN 105840587 B CN105840587 B CN 105840587B CN 201510013861 A CN201510013861 A CN 201510013861A CN 105840587 B CN105840587 B CN 105840587B
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- 238000005086 pumping Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001502 supplementing effect Effects 0.000 title abstract 3
- 230000006698 induction Effects 0.000 claims abstract description 137
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 55
- 239000003921 oil Substances 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims description 179
- 239000013589 supplement Substances 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 14
- 239000007788 liquid Substances 0.000 description 12
- 239000012530 fluid Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 206010008469 Chest discomfort Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The invention discloses oil supplementing and draining control equipment, a system, a method and engineering machinery for a pumping device, wherein the pumping device comprises a first hydraulic oil cylinder and a second hydraulic oil cylinder which are communicated through a communicating cavity, and the equipment comprises: the receiving device is used for receiving a first sensing signal and a second sensing signal which are sent out when the piston of the first hydraulic oil cylinder and the piston of the second hydraulic oil cylinder reach a first preset position and a second preset position; and control means for performing one of the following operations: under the condition of receiving the first sensing signal and the second sensing signal, supplementing/draining oil to the communication cavity according to the time of receiving time of the first sensing signal and the second sensing signal; or under the condition of receiving only the first or second induction signal, performing oil supplement/drainage on the communication cavity according to the received induction signal. The invention can ensure the stability of the volume of the hydraulic oil in the communicating cavity, thereby ensuring that the piston of the hydraulic oil cylinder can reach the accurate position of the contraction in place and providing good lubricating conditions for the piston.
Description
Technical field
The present invention relates to the pumping installations of Hydraulic Field to mend draining control technology, in particular it relates to which a kind of pumping installations is mended
Draining control device, system, method and engineering machinery.
Background technology
The concrete pump set realizes concrete continuous pump by controlling the reciprocating motion of two hydraulic jacks connected
The function of sending.In order to meet more wide in range load capacity, two kinds of pumping states, i.e. low pressure are set in the concrete pump set
Pumping state and state is pumped by, under low pressure pumping state, the rodless cavity of two hydraulic jacks, liquid are connected by connecting chamber
The hydraulic fluid port of force feed is in rod chamber, and hydraulic oil active area is small, and under the state that is pumped by, two hydraulic pressure are connected by connecting chamber
The rod chamber of oil cylinder, the hydraulic fluid port of hydraulic oil are in rodless cavity, and hydraulic oil active area is big.
But due to being let out in oil cylinder itself or the influence of cylinder buffer structure, connecting the hydraulic oil of intracavitary will not keep
It is relatively stable, so as to oil cylinder stroke be caused to change.In the prior art, only set in the rod chamber side of hydraulic jack
Induction installation, the induction installation is used to send commutation signal when the piston of hydraulic jack reaches a precalculated position, however, this is only
The piston of the hydraulic jack Overstroke when stretching out is can guarantee that, and the piston of the hydraulic jack of another series connection is when shrinking
It cannot be guaranteed that stroke is stable.Put however, the lubrication of the piston of hydraulic jack is logical in the concrete pump set in piston retraction in place
Position afterwards, it is possible that it is insufficient to be easily caused piston lubrication by stroke de-stabilising effect, and the life-span can also decline to a great extent.
Either low pressure pumping state is still pumped by state, and two chambers that connection chamber is connected are low pressure chamber, hydraulic pressure
Chamber residing for the oil inlet of oil circuit is high pressure chest.Thus, oil cylinder buffering and interior let out that to cause hydraulic oil to flow to from high pressure chest low
In the case of pressing chamber, it can cause to connect the hydraulic oil volume increase in chamber, especially, under the state that is pumped by, it is more likely that
Cylinder has been hit during stretching in the piston of a hydraulic jack, and induction installation does not sense also on another hydraulic jack
To commutation signal.In addition, hitting cylinder the life-span of the parts of hydraulic jack can also greatly shortened.
As seen through the above analysis, the connection intracavitary of the hydraulic jack of series connection is eliminated by the buffering of hydraulic jack
Hydraulic oil Volume Changes method can not completely using low pressure pump assembling and be pumped by assembling because buffer unit pair
The influence of low pressure pumping state and the state that is pumped by by way of buffering on the contrary, so only can guarantee that pumping installations only low
Press pumping state or only relatively stable in the state down stroke of being pumped by, and can not the two take into account.
The content of the invention
It is an object of the invention to provide a kind of pumping installations to mend draining control device, system, method and engineering machinery, is used for
Solve the problems, such as that the hydraulic oil volume that chamber is connected in pumping installations is unstable.
To achieve these goals, the invention provides a kind of pumping installations to mend draining control device, the pumping installations
Including the first hydraulic jack and the second hydraulic jack connected by connecting chamber, the equipment includes：Reception device, for perform with
One of lower operation：In the case where receiving both the first induced signal and the second induced signal, according to the described first sense
The reception time of induction signal to the chamber that connects mend/let out with the time order and function of the reception time of second induced signal
Oil；Or in the case where only receiving the first induced signal or only receiving the second induced signal, according to received sensing
Signal carries out mending/draining to the connection chamber.
Correspondingly, present invention also offers a kind of pumping installations to mend draining control system, and the system includes：First sensing dress
Put, for sending the first induced signal when the piston of the first hydraulic jack reaches the first precalculated position；Second induction installation, use
In the second hydraulic jack piston reach corresponding to first precalculated position the second precalculated position when send the second sensing
Signal；And pumping installations described above mends draining control device.
Correspondingly, present invention also offers a kind of engineering machinery, including pumping installations described above to mend draining control system
System.
Correspondingly, present invention also offers a kind of pumping installations to mend draining control method, and the pumping installations includes passing through
The first hydraulic jack and the second hydraulic jack, this method of connection chamber connection include：Receive the piston of first hydraulic jack
The piston for reaching the first induced signal sent during the first precalculated position and the second hydraulic cylinder reaches and corresponds to described the
The second induced signal sent during second precalculated position in one precalculated position；And one of following operation：Receiving
In the case of both one induced signal and the second induced signal, according to the reception time of first induced signal and described second
The time order and function of the reception time of induced signal carries out mending/draining to the connection chamber；Or only receiving the first induced signal
Or in the case of only receiving the second induced signal, the connection chamber is carried out mending/draining according to received induced signal.
Pass through above-mentioned technical proposal, the present invention pass through when the piston of two hydraulic jacks reaches respective precalculated position
Between or according to the induced signal received come to connection chamber carry out mending/draining, it is ensured that connect the steady of the hydraulic oil volume of chamber
It is fixed, so as to ensure that the piston of hydraulic jack can reach the accurate location shunk in place, good lubricious strip is provided for piston
Part.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structure chart of pumping installations under the low pressure pumping state that prior art provides；
Fig. 2 is the structure chart for being pumped by pumping installations under state that prior art provides；
Fig. 3 is the block diagram that pumping installations provided by the invention mends draining control device；
Fig. 4 is the block diagram that pumping installations provided by the invention mends draining control system；
Fig. 5 is pumping installations and the knot of benefit draining control system under the low pressure pumping state that first embodiment of the invention provides
Composition；
Fig. 6 is the knot for being pumped by pumping installations under state and mending draining control system that second embodiment of the invention provides
Composition；
Fig. 7 is pumping installations and the knot of benefit draining control system under the low pressure pumping state that third embodiment of the invention provides
Composition；
Fig. 8 is the knot for being pumped by pumping installations under state and mending draining control system that fourth embodiment of the invention provides
Composition；
Fig. 9 is pumping installations and the knot of benefit draining control system under the low pressure pumping state that fifth embodiment of the invention provides
Composition；
Figure 10 is the first induction installation provided by the invention and the second induction installation sensitive time axle；
Figure 11 is that only the second induction installation provided by the invention sends time shaft in the case of induced signal；And
Figure 12 is the flow chart that pumping installations provided by the invention mends draining control method.
Description of reference numerals
A pair of induction installations in the induction installation of 1A, 1B first
2nd, 3 hydraulic fluid ports 4 connection chamber
A pair of induction installations in the induction installation of 5A, 5B second
6A, 6B sensor block corresponding with 5A, 5B respectively
10 pumping installations mend the reception device of draining control device 101
The induction installation of 102 control device 20 first
30 second induction installations 40 mend drainage device
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Before the present invention is introduced, the reversing principle of pumping installations is introduced with reference to Fig. 1 and Fig. 2 first.
Fig. 1 is the structure chart of pumping installations under the low pressure pumping state that prior art provides, under low pressure pumping state, two
The rodless cavity of hydraulic jack is connection chamber, as shown in figure 1, hydraulic oil enters oil cylinder from hydraulic fluid port 3, promotes the downside liquid of shown position
The piston of compressing cylinder carries out contractile motion (shown position is to be moved to the left), because two hydraulic jacks are by connecting chamber 4 two
The rodless cavity connection of individual hydraulic jack, so when the piston of lower hydraulic oil cylinder carries out contractile motion, rodless cavity can be promoted to connect
The piston of logical hydraulic oil compressing upside hydraulic jack carries out stretching campaign (shown position is to move right), and upside hydraulic pressure
The hydraulic oil of the rod chamber of oil cylinder discharges oil cylinder by hydraulic fluid port 2.In upside, the piston of hydraulic jack reaches induction installation 1A position
When putting, induction installation 1A sends commutation signal, and hydraulic system carries out commutation control, hydraulic oil is entered from hydraulic fluid port 2, from hydraulic fluid port 3
Discharge, motion being compressed so as to the piston of upside hydraulic jack, the piston of lower hydraulic oil cylinder carries out stretching campaign, until under
The induction installation 1B of side hydraulic jack senses the sensor block being arranged on piston and sends commutation signal.Above procedure is back and forth followed
Ring, so as to realize that the low pressure of concrete pumps.
Fig. 2 is the structure chart for being pumped by pumping installations under state that prior art provides, and is pumped by under state, two
The rod chamber of hydraulic jack is connection chamber, as shown in Fig. 2 hydraulic oil enters oil cylinder from hydraulic fluid port 2, promotes the upside liquid of shown position
The piston of compressing cylinder carries out stretching campaign, because two hydraulic jacks are by connecting rod chamber company of the chamber 4 in two hydraulic jacks
Logical, so when the piston of upside hydraulic jack stretch out motion, the hydraulic oil that rodless cavity can be promoted to connect oppresses downside liquid
The piston of compressing cylinder carries out contractile motion, and the hydraulic oil of the rodless cavity of lower hydraulic oil cylinder is discharged oil cylinder by hydraulic fluid port 3.
When the piston of upside hydraulic jack reaches induction installation 1A position, induction installation 1A sends commutation signal, and hydraulic system is carried out
Commutation control, hydraulic oil is entered from hydraulic fluid port 3, discharged from hydraulic fluid port 2, contractile motion is carried out so as to the piston of upside hydraulic jack,
The piston of lower hydraulic oil cylinder carries out stretching campaign, until the induction installation 1B of lower hydraulic oil cylinder is sensed and is arranged on piston
Sensor block and send commutation signal.Above procedure reciprocation cycle, so as to realize being pumped by for concrete.
Fig. 3 is the block diagram that pumping installations provided by the invention mends draining control device 10, as shown in figure 3, the equipment 10 is wrapped
Include reception device 101 and control device 102.By the analysis above in association with Fig. 1 and Fig. 2, pumping installations includes passing through company
The first hydraulic jack and the second hydraulic jack that cavity 4 connects, the piston that reception device 101 is used to receive the first hydraulic jack arrive
The first induced signal and the piston of the second hydraulic jack sent during up to the first precalculated position, which reaches, corresponds to the first pre-determined bit
The second induced signal sent during the second precalculated position put, control device 102 perform one of following operation：Receiving
In the case of both first induced signal and the second induced signal, believed according to the reception time of the first induced signal and the second sensing
Number the reception time time order and function to it is described connection chamber 4 carry out mending/draining；Or only receiving the first induced signal or only connecing
In the case of receiving the second induced signal, 4 chambers of connection are carried out mending/draining according to received induced signal.
In the case of hydraulic oil volume in connection chamber 4 is normal, it is predetermined to reach first in the piston of the first hydraulic jack
During position the piston of the second hydraulic jack should reach exactly to the second precalculated position (meet the condition be the first precalculated position
It is corresponding with the second precalculated position), thus time in the first precalculated position and the can be reached by the piston of the first hydraulic jack
The pistons of two hydraulic jacks reaches the time order and function of the time in the second precalculated position to judge whether to connect the hydraulic liquid in chamber 4
Product is normal.Therefore, as long as meeting the piston of the second hydraulic jack when the piston of the first hydraulic jack reaches the first precalculated position
The first precalculated position as the second precalculated position set by condition and the second precalculated position should be reached exactly in this hair
Within bright protection domain.
In the case where only receiving the first induced signal or only receiving the second induced signal, if receiving while conduct
The induced signal of commutation signal has simultaneously carried out oil circuit switching (having commutated), does not receive another induced signal also, then says
The volume of the hydraulic oil of bright connection intracavitary is nor normal condition, it is necessary to carry out mends/the operation of draining.
Top dead centre (the namely end of travel of piston) using the first precalculated position as the piston of the first hydraulic jack below,
Second precalculated position illustrates exemplified by the lower dead center for the piston of the second hydraulic jack.It will be appreciated by those skilled in the art that
It is top dead centre in the first precalculated position, can be by the first induced signal here in the case that the second precalculated position is lower dead center
Or second any one of induced signal be used as commutation signal simultaneously.
Under low pressure pumping state, if the first induced signal receives reception time of the time earlier than the second induced signal,
Illustrate that the hydraulic oil in connection chamber 4 is excessive, then control device 102 controls carries out draining to connection chamber 4, to reduce in connection chamber 4
Hydraulic oil volume；If the reception time of the first induced signal be later than the reception time of the second induced signal or have begun into
Row oil circuit switches and (commutated) and do not receive the first induced signal, illustrates that the hydraulic oil in connection chamber 4 is very few, then control dress
Put 102 controls and repairing is carried out to connection chamber 4, with the hydraulic oil volume in increase connection chamber 4.
Under the state that is pumped by, if the first induced signal receives reception time of the time earlier than the second induced signal,
Illustrate that the hydraulic oil in connection chamber 4 is very few, then control device 102 controls carries out repairing to connection chamber 4, with increase connection chamber 4
Hydraulic oil volume；If the reception time of the first induced signal be later than the reception time of the second induced signal or have begun into
Row oil circuit switches and (commutated) and do not receive the first induced signal, illustrates that the hydraulic oil in connection chamber 4 is excessive, then control dress
Put 102 controls and draining is carried out to connection chamber 4, to reduce the hydraulic oil volume in connection chamber 4.
Because the sensor block that is arranged on piston of induction installation sensing needs the time, and the motion of hydraulic jack formed with
Slight distance error, it is advantageous in the case of, reception time and second induced signal of the control device 102 in the first induced signal
Reception the time time difference be more than a scheduled time threshold value T1 in the case of, just control to connect chamber 4 carry out mending/draining.Tool
For body, under low pressure pumping state, the first induced signal receive the time earlier than the second induced signal the reception time simultaneously
And in the case that the time difference of the two is more than a scheduled time threshold value T1, control device 102 controls carries out draining to connection chamber 4,
It is later than the reception time of the second induced signal in the reception time of the first induced signal and the time difference of the two is more than one and made a reservation for
In the case of time threshold T1, control device 102 controls carries out repairing to connection chamber 4.Under the state that is pumped by, in the first sense
The reception time of induction signal is more than a scheduled time threshold value earlier than the reception time of the second induced signal and the time difference of the two
In the case of T1, control device 102 controls carries out repairing to connection chamber 4, is later than second in the reception time of the first induced signal
In the case that the reception time of induced signal and the time difference of the two are more than a scheduled time threshold value T1, control device 102 is controlled
System carries out draining to connection chamber.
In addition, the first precalculated position can be the position between the top dead centre of the piston of the first hydraulic jack and lower dead center,
Second precalculated position can be the second hydraulic jack piston top dead centre or lower dead center, the first precalculated position set here and
Second precalculated position is mainly top dead centre, the second pre-determined bit that take into account the piston that the first precalculated position is the first hydraulic jack
It is set to the situations below being likely to occur in the lower dead center of the piston of the second hydraulic jack：By combining Fig. 1 and Fig. 2 and will below
Described in Fig. 5 to Fig. 9 analysis understand, can be using one of the first induced signal or the second induced signal simultaneously as changing
To signal, here using the second induced signal simultaneously as exemplified by commutation signal, piston arrival is sensed in corresponding induction installation
Commutation signal is sent during the second precalculated position and really starts commutation to hydraulic jack with a commutation delay time T2, and is changed at this
To delay time T2 be less than scheduled time threshold value T1 described above in the case of, if under low pressure pumping state and connection intracavitary
Hydraulic oil is very few or is pumped by under state and to connect intracavitary hydraulic oil excessive, just occur hydraulic jack commutated and first
The piston of hydraulic jack does not reach the situation in the first precalculated position yet.
Still using the second induced signal simultaneously as exemplified by commutation signal, such as can be configured in the following manner：If
, can be by first in the case where the lower dead center of the piston of the second hydraulic jack is in the second precalculated position for low pressure pumping state
Precalculated position is arranged to the position between the top dead centre of the piston of the first hydraulic jack and cylinder body centre position.Here only illustrate
Understand a kind of situation, the principle in the case of other is similar, and it will not go into details.Certainly, in this case it is necessary in the first sense
Increase reception time of the time delay as the first induced signal after renewal on the reception time of induction signal, control device exists
The time difference of the reception time of the first induced signal after renewal and the reception time of the second induced signal are more than scheduled time threshold
In the case of value T1, control and connection chamber is carried out mending/draining, the control of specific benefit/draining is described more than, not
Repeat.
Fig. 4 is the block diagram that pumping installations provided by the invention mends draining control system, as shown in figure 4, the system is not only wrapped
Include pumping installations and mend draining control device 10, in addition to the first induction installation 20 and the second induction installation 30.First induction installation
20 are used to send the first induced signal when the piston of the first hydraulic jack reaches the first precalculated position, and the second induction installation 30 is used
In the second hydraulic jack piston reach corresponding to the first precalculated position the second precalculated position when send the second induced signal.
It should be noted that the first induction installation 20 or the second induction installation 30 here can simultaneously as Fig. 1 and Fig. 2 shown in sense
Answer device 1A and/or 1B, from another angle for, Fig. 1 and induction installation 1A and/or 1B shown in Fig. 2 can be used as the
One induction installation 20 or the second induction installation 30 use, thus, it is to be understood that the present invention is to increase on the basis of existing technology
One or a pair of induction installations are added.It should be noted that the signals that are sensed of the induction installation 1A and 1B shown in Fig. 1 because
It is as commutation signal, so being to occur in pairs.Thus, if the institute of 20/ second induction installation of the first induction installation 30 in the present invention
The signal of sensing is used as commutation signal simultaneously, then the induction installation 30 of the first induction installation 20/ second should just include a pair
Induction installation.For example, if signal that the first induction installation 20 is sensed while being used as commutation signal, then first sensing
Device 20 should just include a pair of induction installations, and now the second induction installation 30 can include an induction installation, can also wrap
Include a pair of induction installations.Here, in the case where the second induction installation 30 includes an induction installation, control device can be with every two
Secondary oil circuit switching carries out once benefit/draining control, and in the case where the second induction installation 30 includes a pair of induction installations, control
Device oil circuit can switch with regard to carrying out once benefit/draining control each time.Signal that second induction installation 30 is sensed while make
Similar for the principle of commutation signal, it will not go into details.
In the case of it is preferred, therefore, that, the first induction installation 20 includes a pair of induction installations, is respectively used in the first hydraulic jack
The first precalculated position of the first hydraulic jack and the first pre-determined bit of the second hydraulic jack are reached with the piston of the second hydraulic jack
The first induced signal is sent when putting；Second induction installation 30 includes a pair of induction installations, be respectively used in the first hydraulic jack and
The piston of second hydraulic jack reaches the second precalculated position of the first hydraulic jack and the second precalculated position of the second hydraulic jack
When send the second induced signal." first " and " second " mentioned in the present invention are used for the purpose of in description to two hydraulic oil
Cylinder is distinguished, and is not intended to be limiting of the invention, for example, the first hydraulic jack can be Fig. 1 and Fig. 2 and will hereinafter retouch
Upside hydraulic jack shown in the Fig. 5 to Fig. 9 stated, now the second hydraulic jack be Fig. 1 and Fig. 2 and will be described below
Lower hydraulic oil cylinder shown in Fig. 5 to Fig. 9；Certainly, the first hydraulic jack can also be Fig. 1 and Fig. 2 and will be described below
Fig. 5 to Fig. 9 shown in lower hydraulic oil cylinder, now the second hydraulic jack is Fig. 1 and Fig. 2 and the figure that will be described below
Upside hydraulic jack shown in 5 to Fig. 9.First hydraulic jack described here and the first precalculated position of the second hydraulic jack are determined
The justice identical position on the first hydraulic jack and the second hydraulic jack respectively, for example, the of first hydraulic jack
In the case of top dead centre of one precalculated position for the piston of the first hydraulic jack, the first precalculated position of the second hydraulic jack is the
The top dead centre of the piston of two hydraulic jacks.
As shown in figure 4, system provided by the invention also includes mending drainage device 40, for the control in control device 102
Under to connection chamber 4 carry out mending/draining.
More detailed elaboration is carried out to the present invention with reference to specific embodiment.
Embodiment one
Fig. 5 is pumping installations and the knot of benefit draining control system under the low pressure pumping state that first embodiment of the invention provides
Composition, in Figure 5, pumping state are low pressure pumping state, and the first induction installation 20 includes a pair of induction installation 1A and 1B and divided
Not the first hydraulic jack (by Fig. 5 show upside hydraulic jack exemplified by illustrate) and the second hydraulic jack (with shown in Fig. 5
To be illustrated exemplified by lower hydraulic oil cylinder) piston reach top dead centre when send induced signal, the second induction installation 30 includes
A pair of induction installation 5A and 5B simultaneously send sense when the piston of the first hydraulic jack and the second hydraulic jack reaches lower dead center respectively
Induction signal, induced signal that the second induction installation 30 is sent while is used as commutation signal.As shown in figure 5, induction installation 1A and sense
Device 5A is answered to be arranged on the first hydraulic jack, induction installation 1B and induction installation 5B are arranged on the second hydraulic jack, in Fig. 5
Induction installation 5A and 5B be arranged on the outside of hydraulic jack, induction installation 5A and 5B respectively be arranged on the first hydraulic jack and
Sensor block 6A and the 6B pairing of the piston rod end of second hydraulic jack use, certainly, the invention is not restricted to this, as long as sensor block
6A and 6B is set in position with induction installation 5A and 5B to cause induction installation 5A or 5B when piston is in lower dead center
It can sense signal that sensor block 6A or 6B (such as can sense by non-contact electromagnetic) are sent in the protection of the present invention
Within the scope of.Unlike induction installation 5A and 5B, induction installation 1A and 1B sensor block are arranged on piston so as to sense
Device 1A and 1B sends letter by sensing the sensor block being arranged on piston (such as can sensing by non-contact electromagnetic)
Number, in all embodiments provided by the invention, induction installation (including the induction installation in Fig. 5 and Fig. 6 that is arranged on cylinder body
Induction installation 1A and 1B and induction installation 5A and 5B in 1A and 1B and Fig. 7 to Fig. 9) be with this identical situation, below not
Give and repeating.
Since induction installation 5A or 5B send induced signal to oil cylinder there is delay time T2 in commutation, and this is due to system
What response determined, but this time is very short, can guarantee that during the piston retraction stroke of hydraulic jack it is accurate in place, ensureing piston just
Often lubrication.
In the case where not considering the sensitive time and hydraulic jack moving the range error to be formed, as induction installation 1A or 1B
At the time of the induced signal moment t1 sent sends induced signal earlier than induction installation 5B or 5A during t2, illustrate the liquid for connecting chamber 4
Force feed is excessive, then control mends drainage device 40 and the hydraulic oil for connecting chamber 4 is let out into oil return cylinder to reduce hydraulic liquid in connection chamber 4
Product, here can rule of thumb or limited number of time experiment sets the draining time, it is of course also possible to according to the time between t1 and t2
The size of difference carrys out setting time.
Induced signal is sent when the induced signal moment t1 that induction installation 1A or 1B are sent is later than induction installation 5B or 5A
During moment t2 or have begun to commutation and induction installation 1A or 1B illustrates the liquid of connection chamber 4 when not sensing induced signal
Press oil it is very few, then control mend drainage device 40 to connection chamber 4 supplement hydraulic oil with increase connection chamber 4 in hydraulic oil volume, here
Can rule of thumb or limited number of time experiment sets the repairing time, it is of course also possible to according to the time difference between t1 and t2
Size carrys out setting time.
Embodiment two
Fig. 6 is the knot for being pumped by pumping installations under state and mending draining control system that second embodiment of the invention provides
Composition, principle is similar with embodiment one, and in figure 6, to be pumped by state, the first induction installation 20 includes a pair pumping state
Induction installation 1A and 1B and respectively in the first hydraulic jack (so that Fig. 6 show upside hydraulic jack as an example illustrate) and second
The piston of hydraulic jack (being illustrated so that Fig. 6 show lower hydraulic oil cylinder as an example) sends induced signal when reaching top dead centre,
Second induction installation 30 includes a pair of induction installation 5A and 5B and respectively in the first hydraulic jack and the piston of the second hydraulic jack
Induced signal is sent when reaching lower dead center, the induced signal that the second induction installation is sent while is used as commutation signal.Induction installation
Sensor block 6A and the 6B pairing of piston rod ends of the 5A and 5B with being arranged on the first hydraulic jack and the second hydraulic jack use.
In the case where not considering the sensitive time and hydraulic jack moving the range error to be formed, as induction installation 1A or 1B
At the time of the induced signal moment t1 sent sends induced signal earlier than induction installation 5B or 5A during t2, illustrate the liquid for connecting chamber 4
Press oil it is very few, then control mend drainage device 40 to connection chamber 4 supplement hydraulic oil with increase connection chamber 4 in hydraulic oil volume.
Induced signal is sent when the induced signal moment t1 that induction installation 1A or 1B are sent is later than induction installation 5B or 5A
During moment t2 or have begun to commutation and induction installation 1A or 1B illustrates the liquid of connection chamber 4 when not sensing induced signal
Force feed is excessive, then control mends drainage device 40 and the hydraulic oil for connecting chamber 4 is let out into oil return cylinder to reduce hydraulic liquid in connection chamber 4
Product.
Embodiment three
Fig. 7 is pumping installations and the knot of benefit draining control system under the low pressure pumping state that third embodiment of the invention provides
Composition, unlike embodiment one, the second induction installation (including induction installation 5A and 5B) is arranged on the cylinder body of hydraulic jack
The when upper and corresponding sensor block is arranged on piston (not shown in Fig. 7) so as to reach the position of the second induction installation in piston
Two induction installations send letter by sensing the sensor block being arranged on piston (such as can sensing by non-contact electromagnetic)
Number.The operation principle of the present embodiment three is similar with embodiment one.
Example IV
Fig. 8 is the knot for being pumped by pumping installations under state and mending draining control system that fourth embodiment of the invention provides
Composition, unlike embodiment two, the second induction installation (including induction installation 5A and 5B) is arranged on the cylinder body of hydraulic jack
The when upper and corresponding sensor block is arranged on piston (not shown in Fig. 8) so as to reach the position of the second induction installation in piston
Two induction installations send letter by sensing the sensor block being arranged on piston (such as can sensing by non-contact electromagnetic)
Number.The operation principle of the present embodiment four is similar with embodiment two.
Embodiment five
Fig. 9 is pumping installations and the knot of benefit draining control system under the low pressure pumping state that fifth embodiment of the invention provides
Composition, unlike the structure and principle of embodiment one to example IV, the induction installation 1A and 1B shown in Fig. 9 are relative to figure
Induction installation 1A and 1B shown in 5 and Fig. 7 are advanced by, i.e., the induction installation 1A and 1B shown in Fig. 9 is to moving to left, that is, sets
First precalculated position of the first hydraulic jack is advanced by (as shown in Figure 9 to move to left).The induction installation 1A that dotted line is drawn in Fig. 9
Embodiment one induction installation 1A and 1B into example IV position is in position with 1B, the induction installation 1A and 1B that solid line is drawn
Position be the present embodiment five in induction installation 1A and 1B position.
In fig.9, pumping state is low pressure pumping state, and the first induction installation 20 includes a pair of induction installations 1A and 1B,
Induction installation 1A and 1B is arranged on the first hydraulic jack (being illustrated so that Fig. 9 show upside hydraulic jack as an example) and second
Between the top dead centre of the piston of hydraulic jack (being illustrated so that Fig. 9 show lower hydraulic oil cylinder as an example) and cylinder body centre position
Position, the second induction installation 30 includes a pair of induction installation 5A and 5B and in the work of the first hydraulic jack and the second hydraulic jack
Induction installation 5A and 5B is arranged on the sensor block on piston to send induced signal by sensing when plug reaches lower dead center, and second
Induced signal that induction installation 30 is sent while it is used as commutation signal.
Assume initially that induction installation 1A and 1B as described in embodiment one and embodiment three in the first hydraulic jack
Piston send induced signal when reaching top dead centre, induction installation 1A or 1B are t1 at the time of sending induced signal, induction installation
5A or 5B is t2 at the time of sending induced signal, commutates to exist since induction installation 5A or 5B send induced signal to oil cylinder and prolongs
When time T2, induction installation senses time required for the sensor block being arranged on piston and hydraulic jack move to be formed away from
Summation from error time caused by error is t3, it is assumed here that needs to postpone t3.Embodiment one and Fig. 7 so shown in Fig. 5
There can be following defect in shown embodiment three：By above description it is recognised that in t3<T1 (is described above
T1 is scheduled time threshold value) in the case of, t1 at the time of induction installation 1A or 1B as shown in Figure 10 send induced signal
Meet t2-T1<t1<T2+T1 situation, now the volume of the hydraulic oil in connection chamber 4 is normal, it is not necessary to carries out mending/draining behaviour
Make.Also, the oil cylinder commutation moment is t2+T2, and induction installation 1A or 1B senses the sensor block that is arranged on piston in theory
Moment is t2+t3, if however, T2<T3, i.e., in the presence of section △ t as shown in figure 11, then oil circuit is carried out in hydraulic jack
The piston of the first hydraulic jack does not reach top dead centre (i.e. end of travel) yet when switching, can so cause induction installation 1A or
1B will not sense any signal, so be unfavorable for carrying out mending/the control of draining, such as the time control of benefit/draining.
The defects of existing for above example one and embodiment three, in Fig. 9 by induction installation 1A and 1B to moving to left to keep away
Exempt from the problem of induction installation 1A and 1B can not sense signal occur.Certainly, if it will be appreciated by those skilled in the art that will sense
Answer device 1A and 1B to move to left, it is necessary on the time for receiving the induced signal that induction installation 1A and 1B are sent increase by one delay
Time is made whether to need the judgement of benefit/draining as the reception time after renewal.Specifically need time and the sensing postponed
Device 1A is related to the position of the 1B pistons to be sensed, and in the present embodiment, specifically needs time and the induction installation postponed
1A is related to 1B position.
Here, embodiment five illustrate only induction installation 1A and 1B are moved to left under low pressure pumping state in the case of, for
The principle being pumped by under state is similar with embodiment five, and in this, it will not go into details.
Correspondingly, the invention provides a kind of engineering machinery, including pumping installations described above to mend draining control system.
Figure 12 is the flow chart that pumping installations provided by the invention mends draining control method, and pumping installations includes passing through connection
The first hydraulic jack and the second hydraulic jack of chamber connection, as shown in figure 12, this method includes：Receive the work of the first hydraulic jack
Plug reaches the first induced signal sent during the first precalculated position and the piston arrival of second hydraulic cylinder is predetermined corresponding to first
The second induced signal sent during the second precalculated position of position；And one of following operation：Receiving the first sensing
In the case of both signal and the second induced signal, time and second induced signal are received according to the first induced signal
The time order and function for receiving the time carries out mending/draining to connection chamber；Or only receiving the first induced signal or only receiving second
In the case of induced signal, connection chamber is carried out mending/draining according to received induced signal.
It should be noted that pumping installations provided by the invention mends the detail and benefit and this hair of draining control method
The pumping installations benefit draining control device of bright offer is similar, and in this, it will not go into details.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.Liquid is arranged on for example, induction installation 1 can be changed into
Induction installation on the outside of compressing cylinder.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means, such as the spy by the correlation of induction installation 5 in embodiment one
The sign feature related to the induction installation 1 in embodiment three combines.In order to avoid unnecessary repetition, the present invention is to various possibility
Combination no longer separately illustrate.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (14)
1. a kind of pumping installations mends draining control device, the pumping installations includes the first hydraulic jack connected by connecting chamber
With the second hydraulic jack, it is characterised in that the equipment includes：
Reception device, the first sensing letter that the piston for receiving first hydraulic jack is sent when reaching the first precalculated position
Number and the piston of the second hydraulic cylinder reach the sent during the second precalculated position corresponding to first precalculated position
Two induced signals；And
Control device, for performing one of following operation：
In the case where receiving both the first induced signal and the second induced signal, according to the reception of first induced signal
Time carries out mending/draining with the time order and function of the reception time of second induced signal to the chamber that connects；Or
In the case where only receiving the first induced signal or only receiving the second induced signal, believed according to received sensing
Number to it is described connection chamber carry out mending/draining.
2. equipment according to claim 1, it is characterised in that receiving the first induced signal and the second induced signal two
In the case of person, the control device is in first induced signal when receiving time and the reception of second induced signal
Between time difference be more than a scheduled time threshold value in the case of, control to it is described connection chamber carry out mending/draining.
3. equipment according to claim 1 or 2, it is characterised in that first precalculated position is first hydraulic oil
The top dead centre of the piston of cylinder, second precalculated position are the lower dead center of the piston of second hydraulic jack.
4. equipment according to claim 2, it is characterised in that first precalculated position is first hydraulic jack
Position between the top dead centre of piston and lower dead center, second precalculated position are stopped for the upper of the piston of second hydraulic jack
Point or lower dead center.
5. equipment according to claim 4, it is characterised in that
Increase a time delay connecing as the first induced signal after renewal on the reception time of first induced signal
Between time receiving, the reception time of first induced signal of the control device after the renewal and connecing for second induced signal
In the case that time difference between time receiving is more than a scheduled time threshold value, controls and the connection chamber is carried out mending/draining.
6. a kind of pumping installations mends draining control system, it is characterised in that the system includes：
First induction installation, for sending the first induced signal when the piston of the first hydraulic jack reaches the first precalculated position；
Second induction installation, make a reservation for for being reached in the piston of the second hydraulic jack corresponding to the second of first precalculated position
The second induced signal is sent during position；And
Pumping installations as described in any one of claim 1-5 claim mends draining control device.
7. according to the system described in claim 6, it is characterised in that
First induction installation includes a pair of induction installations, is respectively used in first hydraulic jack and second hydraulic pressure
The piston of oil cylinder reach the first hydraulic jack the first precalculated position and the second hydraulic jack the first precalculated position when send the
One induced signal；
Second induction installation includes a pair of induction installations, is respectively used in first hydraulic jack and second hydraulic pressure
The piston of oil cylinder reach the first hydraulic jack the second precalculated position and the second hydraulic jack the second precalculated position when send the
Two induced signals.
8. system according to claim 6, it is characterised in that the system also includes：
Drainage device is mended, for carrying out mending/draining to connection chamber under the control of the control device.
9. a kind of engineering machinery, it is characterised in that including the pumping installations described in any one of claim 6 to 8 claim
Mend draining control system.
10. a kind of pumping installations mends draining control method, the pumping installations includes the first hydraulic oil connected by connecting chamber
Cylinder and the second hydraulic jack, it is characterised in that this method includes：
Receive when the piston of first hydraulic jack reaches the first precalculated position the first induced signal for sending and described the
The piston of two hydraulic cylinders reaches the second induced signal sent during the second precalculated position corresponding to first precalculated position；With
And
One of operation below：
In the case where receiving both the first induced signal and the second induced signal, according to the reception of first induced signal
Time carries out mending/draining with the time order and function of the reception time of second induced signal to the chamber that connects；Or
In the case where only receiving the first induced signal or only receiving the second induced signal, believed according to received sensing
Number to it is described connection chamber carry out mending/draining.
11. according to the method for claim 10, it is characterised in that receiving the first induced signal and the second induced signal
In the case of the two, in the time difference for receiving time and the reception time of second induced signal of first induced signal
In the case of more than a scheduled time threshold value, control and the connection chamber is carried out mending/draining.
12. the method according to claim 10 or 11, it is characterised in that
First precalculated position is the top dead centre of the piston of first hydraulic jack, and second precalculated position is described the
The lower dead center of the piston of two hydraulic jacks.
13. according to the method for claim 11, it is characterised in that first precalculated position is first hydraulic jack
Piston top dead centre and lower dead center between position, second precalculated position for second hydraulic jack piston it is upper
Stop or lower dead center.
14. according to the method for claim 13, it is characterised in that increase on the reception time of first induced signal
Reception time of one time delay as the first induced signal after renewal, the reception of the first induced signal after the renewal
In the case that the time difference of time and the reception time of second induced signal are more than the scheduled time threshold value, control to institute
Connection chamber is stated to carry out mending/draining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013861.8A CN105840587B (en) | 2015-01-12 | 2015-01-12 | Oil supplementing and draining control equipment, system and method for pumping device and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013861.8A CN105840587B (en) | 2015-01-12 | 2015-01-12 | Oil supplementing and draining control equipment, system and method for pumping device and engineering machinery |
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| CN105840587A CN105840587A (en) | 2016-08-10 |
| CN105840587B true CN105840587B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510013861.8A Active CN105840587B (en) | 2015-01-12 | 2015-01-12 | Oil supplementing and draining control equipment, system and method for pumping device and engineering machinery |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106402092B (en) * | 2016-12-15 | 2018-05-04 | 中联重科股份有限公司 | Piston position detection equipment and method for telescopic oil cylinder and engineering machinery |
| CN108058815B (en) * | 2017-10-31 | 2023-03-21 | 中航通飞研究院有限公司 | Simple and flexible control mechanism capable of realizing retraction of undercarriage |
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| CN1763385A (en) * | 2005-10-28 | 2006-04-26 | 三一重工股份有限公司 | Valve oil supplement method for series connection cylinders and apparatus therefor |
| CN101776107A (en) * | 2010-03-24 | 2010-07-14 | 长沙中联重工科技发展股份有限公司 | Exact stroke control method and stroke control device of serial oil cylinders |
| CN103148062A (en) * | 2013-03-19 | 2013-06-12 | 中联重科股份有限公司 | Stroke control system, method and device for series oil cylinders |
| CN103591006A (en) * | 2013-11-18 | 2014-02-19 | 中联重科股份有限公司 | Pumping stroke optimization control method and system and engineering machinery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10036202A1 (en) * | 2000-07-24 | 2002-02-07 | Putzmeister Ag | Slurry pump |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763385A (en) * | 2005-10-28 | 2006-04-26 | 三一重工股份有限公司 | Valve oil supplement method for series connection cylinders and apparatus therefor |
| CN101776107A (en) * | 2010-03-24 | 2010-07-14 | 长沙中联重工科技发展股份有限公司 | Exact stroke control method and stroke control device of serial oil cylinders |
| CN103148062A (en) * | 2013-03-19 | 2013-06-12 | 中联重科股份有限公司 | Stroke control system, method and device for series oil cylinders |
| CN103591006A (en) * | 2013-11-18 | 2014-02-19 | 中联重科股份有限公司 | Pumping stroke optimization control method and system and engineering machinery |
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