CN102979692B - Tandem hydraulic cylinder device, control method thereof and pumping device - Google Patents
Tandem hydraulic cylinder device, control method thereof and pumping device Download PDFInfo
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- CN102979692B CN102979692B CN201210161359.8A CN201210161359A CN102979692B CN 102979692 B CN102979692 B CN 102979692B CN 201210161359 A CN201210161359 A CN 201210161359A CN 102979692 B CN102979692 B CN 102979692B
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Abstract
The invention discloses a tandem hydraulic cylinder device, a control method for the tandem hydraulic cylinder and a pumping device for a pump truck. The tandem hydraulic cylinder device comprises a first hydraulic cylinder, a second hydraulic cylinder, a first position collector, a second position collector, a third position collector, a fourth position collector, an oil supplement and drain component and a controller. The first position collector and the second position collector are respectively used for detecting front extreme positions of a first piston of the first hydraulic cylinder and a second piston of the second hydraulic cylinder. The third position collector and the fourth position collector are respectively used for detecting rear extreme positions of the first piston and the second piston. According to the tandem hydraulic cylinder device, the first hydraulic cylinder and the second hydraulic cylinder are enabled to be adjusted and compensated in real time, control accuracy is improved, and meanwhile, four position collectors can be used for reversing control of advance and return movements of the first hydraulic cylinder and the second hydraulic cylinder, reliability of the advance and return movements of the first hydraulic cylinder and the second hydraulic cylinder is improved, the advance and return movements are enabled to be provided with certain buffer distance advance and return movement when the direction of the advance and return movement is changed, and buffer effect and performance are enabled to be good.
Description
Technical field
The present invention relates to the manufacturing technology field of concrete mixer, particularly a kind of serial oil cylinders device and for controlling method and a kind of pumping installations for pump truck of this serial oil cylinders device.
Background technique
The concrete pump set be by series connection hydraulic jack to-and-fro motion realize concrete uninterrupted pumping, for the hydraulic jack energy quick and stable to-and-fro motion that makes to connect, drive corresponding concrete piston pump concrete, serial oil cylinders need meet following condition: a, provide reliably correct and make the reversing mode of two oil cylinder reciprocatings motions; B, make in serial oil cylinders to-and-fro motion to keep synchronous; During c, serial oil cylinders to-and-fro motion commutation, need meet stationarity or says and cushions requirement.
Cylinder diameter, the bar footpath of two oil cylinders of serial oil cylinders are all identical, in to-and-fro motion, can keep being in theory synchronized with the movement, but due to reasons such as accuracy of manufacturing, load, leakages, can cause two oil cylinders asynchronous, accumulation in time, its synchronization error increases gradually, finally makes system normally work.
The pumping installations of prior art, on reversing mode, has respectively and only has the fixing signal picker of two covers, obtains and provides serial oil cylinders to-and-fro motion necessary two commutation signal.If a set of signal picker wherein damages, back and forth pumping campaign just can only fault stop.Affect the concrete pump set reliability of operation, be difficult to meet the construction requirement of actual pump concrete.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention is to propose a kind of serial oil cylinders device that collects commutation, buffering and synchronous formation control one.
Second object of the present invention is to propose a kind of controlling method of serial oil cylinders.
The 3rd object of the present invention is to propose a kind of pumping installations for pump truck.
According to the serial oil cylinders device of the embodiment of the present invention, comprise: the first and second oil cylinders, described the first and second oil cylinders are one another in series and arrange abreast, align with the front-end and back-end of described the second oil cylinder respectively being orthogonal on the axial first direction of described the first oil cylinder in the front-end and back-end of described the first oil cylinder; First to fourth station acquisition device, described the first and second station acquisition devices are in alignment with each other and are respectively used to detect the front limit position of the first piston of described the first oil cylinder and the second piston of described the second oil cylinder on described first direction, and described the third and fourth station acquisition device is in alignment with each other and is respectively used to detect the rear limit position of described first piston and described the second piston on described first direction; Mend draining assembly, described benefit draining assembly is connected with the inner chamber that described the first and second oil cylinders communicate with each other; And controller, described controller respectively with described first to fourth station acquisition device with mend draining assembly and be connected with according to commutation, buffering and the travel synchronization of the first and second oil cylinders described in the SC sigmal control of described first to fourth station acquisition device.
According to one embodiment of present invention, primary importance collector and second place collector are arranged in juxtaposition, the 3rd station acquisition device and the 4th station acquisition device are arranged in juxtaposition, can detect first piston and whether the second piston reaches precalculated position, and in the to-and-fro motion of the first oil cylinder and the second oil cylinder by reinforcing and reducing methods oil assembly repairing or draining.Make the first oil cylinder and the second oil cylinder can adjust in real time compensation ability, improve control accuracy high.Meanwhile, the commutation that four station acquisition devices can be used for the first oil cylinder and the motion of the second oil cylinder reciprocating is controlled.Four of equal value uses of station acquisition device, have improved the reliability of the first oil cylinder and the motion of the second oil cylinder reciprocating to a great extent, while making to-and-fro motion commutation, have all the time certain commutation buffer distance, make cushioning effect performance good.
In addition, serial oil cylinders device according to the above embodiment of the present invention, can also have following additional technical characteristics:
Serial oil cylinders device according to an embodiment of the invention, described primary importance collector is between the front-end and back-end of described the first oil cylinder and the front end setting of contiguous described the first oil cylinder, and described second place collector is between the front-end and back-end of described the second oil cylinder and the front end setting of contiguous described the second oil cylinder.
Serial oil cylinders device according to an embodiment of the invention, described the 3rd station acquisition device between the front-end and back-end of described the first oil cylinder and the rear end of contiguous described the first oil cylinder arrange, described the 4th station acquisition device between the front-end and back-end of described the second oil cylinder and the rear end of contiguous described the second oil cylinder arrange.
Serial oil cylinders device according to an embodiment of the invention, the rod chamber rodless cavity logical or described the first and second oil cylinders connected with each other of described the first and second oil cylinders is connected with each other logical.
Serial oil cylinders device according to an embodiment of the invention, at described first piston, move backward and the second and the 3rd station acquisition device work described in during described the second piston advances forward, and described first piston travel forward and described the second piston while moving backward described in the first and the 4th station acquisition device work.
According to the controlling method of second aspect present invention embodiment's serial oil cylinders device, described serial oil cylinders device comprises the first and second oil cylinders and the first to fourth station acquisition device that is one another in series and arranges abreast, align with the front-end and back-end of described the second oil cylinder respectively being orthogonal on the axial first direction of described the first oil cylinder in the front-end and back-end of described the first oil cylinder, described the first and second station acquisition devices are in alignment with each other and are respectively used to detect the front limit position of the first piston of described the first oil cylinder and the second piston of described the second oil cylinder on described first direction, described the third and fourth station acquisition device is in alignment with each other and is respectively used to detect the rear limit position of described first piston and described the second piston on described first direction, described controlling method comprises the following steps: described first piston move backward and during described the second piston advances forward by the described the 3rd and second place collector detect described the first and second pistons and whether move to precalculated position, any in the described second and the 3rd station acquisition device detects and when corresponding piston moves to precalculated position, controls the first and second oil cylinders commutations, judge whether the described second and the 3rd station acquisition device detects corresponding piston simultaneously and move to precalculated position, if in the described second and the 3rd station acquisition device only one corresponding piston detected and move to precalculated position, the interference of inner chamber fluid or deficiency that described the first and second oil cylinders communicate with each other, the inner chamber repairing that described benefit draining assembly communicates with each other to described the first and second oil cylinders or the inner chamber draining communicating with each other from described the first and second oil cylinders, at described first piston, travel forward and described the second piston detects described the first and second pistons by the first and the 4th station acquisition device while moving backward whether moves to precalculated position, any in the described first and the 4th station acquisition device detects and when corresponding piston moves to precalculated position, controls the first and second oil cylinders commutations, with judge whether the described first and the 4th station acquisition device detects corresponding piston simultaneously and move to precalculated position, if in the described second and the 3rd station acquisition device only one corresponding piston detected and move to precalculated position, the interference of inner chamber fluid or deficiency that described the first and second oil cylinders communicate with each other, the inner chamber repairing that described benefit draining assembly communicates with each other to described the first and second oil cylinders or the inner chamber draining communicating with each other from described the first and second oil cylinders.
The controlling method of serial oil cylinders device according to an embodiment of the invention, analyze deficiency or the interference state of the inner chamber fluid that described the first and second oil cylinders of detecting for three times communicate with each other, make the inner chamber repairing that described benefit draining assembly communicates with each other to described the first and second oil cylinders or the inner chamber draining communicating with each other from described the first and second oil cylinders.
According to the controlling method for serial oil cylinders device of the embodiment of the present invention, the first oil cylinder and the second oil cylinder can be adjusted compensation in real time, improve control accuracy high.Meanwhile, the commutation that four station acquisition devices can be used for the first oil cylinder and the motion of the second oil cylinder reciprocating is controlled.Four of equal value uses of station acquisition device, have improved the reliability of the first oil cylinder and the motion of the second oil cylinder reciprocating to a great extent, while making to-and-fro motion commutation, have all the time certain commutation buffer distance, make cushioning effect performance good.
According to third aspect present invention embodiment's the pumping installations for pump truck, comprise: the first and second oil cylinders, described the first and second oil cylinders are one another in series and arrange abreast, align with the front-end and back-end of described the second oil cylinder respectively being orthogonal on the axial first direction of described the first oil cylinder in the front-end and back-end of described the first oil cylinder; The first and second concrete cylinders, the front end of the first piston bar of described the first oil cylinder in described the first concrete cylinder with the concrete piston coaxial of described the first concrete cylinder be connected, the front end of the second piston rod of described the second oil cylinder in described the second concrete cylinder with being connected of the concrete piston coaxial of described the second concrete cylinder; Water tank, described water tank is located between described the first and second oil cylinders and described the first and second concrete cylinders, and described the first and second piston rods are connected with described the first and second concrete pistons respectively through described water tank; First to fourth station acquisition device, described the first and second station acquisition devices are in alignment with each other and are respectively used to detect the front limit position of described first piston and described the second piston on described first direction, and described the third and fourth station acquisition device is in alignment with each other and is respectively used to detect the rear limit position of described first piston and described the second piston on described first direction; Mend draining assembly, described benefit draining assembly is connected with the inner chamber that described the first and second oil cylinders communicate with each other; And controller, described controller respectively with described first to fourth station acquisition device with mend draining assembly and be connected with according to commutation, buffering and the travel synchronization of the first and second oil cylinders described in the SC sigmal control of described first to fourth station acquisition device.
Pumping installations for pump truck according to an embodiment of the invention, described primary importance collector is between the front-end and back-end of described the first oil cylinder and the front end setting of contiguous described the first oil cylinder, and described second place collector is between the front-end and back-end of described the second oil cylinder and the front end setting of contiguous described the second oil cylinder.
Pumping installations for pump truck according to an embodiment of the invention, described the 3rd station acquisition device between the front-end and back-end of described the first oil cylinder and the rear end of contiguous described the first oil cylinder arrange, described the 4th station acquisition device between the front-end and back-end of described the second oil cylinder and the rear end of contiguous described the second oil cylinder arrange.
Pumping installations for pump truck according to an embodiment of the invention, described the third and fourth station acquisition device is located in described water tank.
Pumping installations for pump truck according to an embodiment of the invention, the rod chamber rodless cavity logical or described the first and second oil cylinders connected with each other of described the first and second oil cylinders is connected with each other logical.
Pumping installations for pump truck according to an embodiment of the invention, at described first piston, move backward and the second and the 3rd station acquisition device work described in during described the second piston advances forward, and described first piston travel forward and described the second piston while moving backward described in the first and the 4th station acquisition device work.
According to the pumping installations of the embodiment of the present invention, the serial oil cylinders device described in previous embodiment is installed according to the present invention.Thus, integrate commutation, buffering and synchronous formation control.Adopt redundancy, improved the stability of pumping installations, improved manufacturing efficiency.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming embodiment's description, wherein:
Fig. 1 is the schematic diagram of the pumping installations for pump truck according to an embodiment of the invention;
Fig. 2 is the schematic diagram of the pumping installations for pump truck according to a second embodiment of the present invention;
Fig. 3 is the schematic diagram of the pumping installations for pump truck of a third embodiment in accordance with the invention; With
Fig. 4 is the schematic diagram of the pumping installations for pump truck of a third embodiment in accordance with the invention.
Embodiment
Describe embodiments of the invention below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, connect integratedly, can be also to removably connect; Can be mechanical connection or electrical connection, can be also the connection of two element internals; Can be to be directly connected, also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Describe with reference to the accompanying drawings serial oil cylinders device according to an embodiment of the invention in detail.
As Figure 1-4, the serial oil cylinders device according to the embodiment of the present invention, comprising: the first oil cylinder 10a, the second oil cylinder 10b, primary importance collector 20a, second place collector 20b, the 3rd station acquisition device 20c, the 4th station acquisition device 20d, mends draining assembly 30, controller (not shown).
Specifically, the first oil cylinder 10a and the second oil cylinder 10b are one another in series, and the first oil cylinder 10a and the second oil cylinder 10b arrange abreast.The front end of the first oil cylinder 10a (left end as shown in Figure 1 to Figure 4) and rear end (right-hand member as shown in Figure 1 to Figure 4) align with the front-end and back-end of the second oil cylinder 10b respectively in a first direction.Wherein, first direction is the axial direction that is orthogonal to the first oil cylinder 10a, i.e. upper and lower direction shown in as shown in Figure 1 to Figure 4.
Primary importance collector 20a and the second place collector 20b layout that is in alignment with each other in a first direction, the 3rd station acquisition device 20c and the 4th station acquisition device 20d layout that is in alignment with each other in a first direction.Primary importance collector 20a is for detection of the front limit position of the first piston 13a of the first oil cylinder 10a, second place collector 20b is for detection of the front limit position of the second piston 13b of the second oil cylinder 10b, the 3rd station acquisition device 20c is for detection of the rear limit position of the first piston 13a of the first oil cylinder 10a, and the 4th station acquisition device 20d is for detection of the rear limit position of the second piston 13b of the second oil cylinder 10b.
Mending draining assembly 30 is connected with the inner chamber 12 that the second oil cylinder 10b communicates with each other with the first oil cylinder 10a.
Described controller respectively with primary importance collector 20a, second place collector 20b, the 3rd station acquisition device 20c, the 4th station acquisition device 20d and benefit draining assembly 30 are connected, according to primary importance collector 20a, second place collector 20b, the 3rd station acquisition device 20c, SC sigmal control the first oil cylinder 10a of the 4th station acquisition device 20d and commutation, buffering and the travel synchronization of the second oil cylinder 10b.
According to one embodiment of present invention, primary importance collector 20a and second place collector 20b are arranged in juxtaposition, the 3rd station acquisition device 20c and the 4th station acquisition device 20d are arranged in juxtaposition, can detect first piston 13a and whether the second piston 13b reaches precalculated position, and in the to-and-fro motion of the first oil cylinder 10a and the second oil cylinder 10b by reinforcing and reducing methods oil assembly repairing or draining.Make the first oil cylinder 10a and the second oil cylinder can adjust in real time compensation, improve control accuracy high.Meanwhile, four station acquisition devices can be used for the first oil cylinder 10a and the reciprocating commutation control of the second oil cylinder 10b.Four of equal value uses of station acquisition device, the first oil cylinder 10a and the reciprocating reliability of the second oil cylinder 10b have been improved to a great extent, while having guaranteed the to-and-fro motion commutation of two serial connection oil cylinders, there is all the time certain commutation buffer distance, make cushioning effect performance good.
According to some embodiments of the present invention, at first piston 13a, move backward and the second piston 13b second place collector 20b and the 3rd station acquisition device 20c work while travelling forward, and travel forward and the second piston 13b primary importance collector 20a and the 4th station acquisition device 20d work while moving backward at first piston 13a.
As shown in Figure 1, according to one embodiment of present invention, the rod chamber of the first oil cylinder 10a and the second oil cylinder 10b is connected with each other logical.Primary importance collector 20a is positioned between the front end (left end as shown in Figure 1) of the first oil cylinder 10a and rear end (right-hand member as shown in Figure 1) and the front end setting of contiguous the first oil cylinder 10a, and second place collector 20b is between the front-end and back-end of the second oil cylinder 10b and the front end setting of contiguous the second oil cylinder 10b.The 3rd station acquisition device 20c between the front-end and back-end of the first oil cylinder 10a and the rear end of contiguous the first oil cylinder 10a arrange, the 4th station acquisition device 20d between the front-end and back-end of the second oil cylinder 10b and the rear end of contiguous the second oil cylinder 10b arrange.
As shown in Figure 2, according to another embodiment of the present invention, the rodless cavity of the first oil cylinder 10a and the second oil cylinder 10b is connected with each other logical.Primary importance collector 20a is positioned between the front end (left end as shown in Figure 2) of the first oil cylinder 10a and rear end (right-hand member as shown in Figure 2) and the front end setting of contiguous the first oil cylinder 10a, and second place collector 20b is between the front-end and back-end of the second oil cylinder 10b and the front end setting of contiguous the second oil cylinder 10b.The 3rd station acquisition device 20c between the front-end and back-end of the first oil cylinder 10a and the rear end of contiguous the first oil cylinder 10a arrange, the 4th station acquisition device 20d between the front-end and back-end of the second oil cylinder 10b and the rear end of contiguous the second oil cylinder 10b arrange.
Describe with reference to the accompanying drawings the controlling method of embodiment's serial oil cylinders device according to a second aspect of the invention in detail.
As Figure 1-4, described serial oil cylinders device comprises the first oil cylinder 10a and the second oil cylinder 10b and the primary importance collector 20a that is one another in series and arranges abreast, second place collector 20b, the 3rd station acquisition device 20c, the 4th station acquisition device 20d.Before described first oil cylinder the first oil cylinder 10a, (as shown in Figure 1 to Figure 4 in direction left) end and rear (as shown in Figure 1 to Figure 4 in direction to the right) are held and are alignd with the front-end and back-end of the second oil cylinder 10b respectively on the axial first direction that is orthogonal to described first oil cylinder the first oil cylinder 10a.Primary importance collector 20a and the second place collector 20b layout that is in alignment with each other in a first direction, the 3rd station acquisition device 20c and the 4th station acquisition device 20d layout that is in alignment with each other in a first direction.Primary importance collector 20a is for detection of the front limit position of the first piston 13a of the first oil cylinder 10a, second place collector 20b is for detection of the front limit position of the second piston 13b of the second oil cylinder 10b, the 3rd station acquisition device 20c is for detection of the rear limit position of the first piston 13a of the first oil cylinder 10a, and the 4th station acquisition device 20d is for detection of the rear limit position of the second piston 13b of the second oil cylinder 10b.
Controlling method according to the serial oil cylinders device of the embodiment of the present invention, comprises the following steps:
At first piston 13a, move backward and the second piston 13b while travelling forward, by second place collector 20b, detect the second piston 13b and whether move to front limit position, and whether move to rear limit position by the 3rd station acquisition device 20c detection first piston 13a.
When any in second place collector 20b and the 3rd station acquisition device 20c detects corresponding piston and move to precalculated position, control the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if second place collector 20b detects the second piston 13b, move to front limit position, or the 3rd station acquisition device 20c is when first piston 13a being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether second place collector 20b and the 3rd station acquisition device 20c detect corresponding piston simultaneously and move to precalculated position, if in second place collector 20b and the 3rd station acquisition device 20c only one corresponding piston detected and move to precalculated position, inner chamber 12 fluid interference or the deficiencies that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other, inner chamber 12 drainings of mending inner chamber 12 repairings that draining assembly 30 communicates with each other to the first oil cylinder 10a and the second oil cylinder 10b or communicating with each other from the first oil cylinder 10a and the second oil cylinder 10b.
At first piston 13a, travel forward and the second piston 13b while moving backward, by primary importance collector 20a, detect first piston 13a and whether move to front limit position, and by the 4th station acquisition device 20d, detect the second piston 13b and whether move to rear limit position.
When any in primary importance collector 20a and the 4th station acquisition device 20d detects corresponding piston and move to precalculated position, control the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if primary importance collector 20a detects first piston 13a, move to front limit position, or the 4th station acquisition device 20d is when the second piston 13b being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether primary importance collector 20a and the 4th station acquisition device 20d detect corresponding piston simultaneously and move to precalculated position, if in primary importance collector 20a and the 4th station acquisition device 20d only one corresponding piston detected and move to precalculated position, inner chamber 12 fluid interference or the deficiencies that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other, inner chamber 12 drainings of mending inner chamber 12 repairings that draining assembly 30 communicates with each other to the first oil cylinder 10a and the second oil cylinder 10b or communicating with each other from the first oil cylinder 10a and the second oil cylinder 10b.
According to the controlling method for serial oil cylinders device of the embodiment of the present invention, the first oil cylinder 10a and the second oil cylinder 10b can adjust compensation in real time, improve control accuracy high.Meanwhile, four station acquisition devices can be used for the first oil cylinder 10a and the reciprocating commutation control of the second oil cylinder 10b.Four of equal value uses of station acquisition device, have improved the first oil cylinder 10a and the reciprocating reliability of the second oil cylinder 10b to a great extent, while making to-and-fro motion commutation, have all the time certain commutation buffer distance, make cushioning effect performance good.
According to one embodiment of present invention, analyze deficiency or the interference state of inner chamber 12 fluid that the first oil cylinder 10a of detecting for three times and the second oil cylinder 10b communicate with each other, inner chamber 12 drainings that make to mend inner chamber 12 repairings that draining assembly 30 communicates with each other to described the first oil cylinder 10a and the second oil cylinder 10b or communicate with each other from the first oil cylinder 10a and the second oil cylinder 10b.Thus, deficiency that can basis or interference status adjustment are mended the time of draining assembly 30 repairings or draining, further accurately to control inner chamber 12 fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.Meanwhile, can avoid one-time detection result inaccurate, when any station acquisition device damages, serial oil cylinders can work on, and has improved the stability of serial oil cylinders work.
If table 1 is the executing state of reinforcing and reducing methods oil assembly 30 according to an embodiment of the invention in part situation.Wherein t is that reinforcing and reducing methods oil assembly 30 is mended the draining time, and k1 and k2 are the reinforcing and reducing methods oil time coefficient of reinforcing and reducing methods oil assembly 30 under different situations.
Table 1
Describe with reference to the accompanying drawings the pumping installations for pump truck according to third aspect present invention embodiment in detail.
As Figure 1-4, the pumping installations for pump truck according to the embodiment of the present invention, comprising: the first oil cylinder 10a, the second oil cylinder 10b, primary importance collector 20a, second place collector 20b, the 3rd station acquisition device 20c, the 4th station acquisition device 20d, mend draining assembly 30 and controller (not shown), the first concrete cylinder 40a, the second concrete cylinder 40b, water tank 50.
Specifically, the first oil cylinder 10a and the second oil cylinder 10b are one another in series, and the first oil cylinder 10a and the second oil cylinder 10b arrange abreast.The front end of the first oil cylinder 10a (left end as shown in Figure 1 to Figure 4) and rear end (right-hand member as shown in Figure 1 to Figure 4) align with the front-end and back-end of the second oil cylinder 10b respectively in a first direction.Wherein, first direction is the axial direction that is orthogonal to the first oil cylinder 10a, i.e. upper and lower direction shown in as shown in Figure 1 to Figure 4.
Primary importance collector 20a and the second place collector 20b layout that is in alignment with each other in a first direction, the 3rd station acquisition device 20c and the 4th station acquisition device 20d layout that is in alignment with each other in a first direction.Primary importance collector 20a is for detection of the front limit position of the first piston 13a of the first oil cylinder 10a, second place collector 20b is for detection of the front limit position of the second piston 13b of the second oil cylinder 10b, the 3rd station acquisition device 20c is for detection of the rear limit position of the first piston 13a of the first oil cylinder 10a, and the 4th station acquisition device 20d is for detection of the rear limit position of the second piston 13b of the second oil cylinder 10b.
Mending draining assembly 30 is connected with the inner chamber 12 that the second oil cylinder 10b communicates with each other with the first oil cylinder 10a.With
Described controller respectively with primary importance collector 20a, second place collector 20b, the 3rd station acquisition device 20c, the 4th station acquisition device 20d and benefit draining assembly 30 are connected, according to primary importance collector 20a, second place collector 20b, the 3rd station acquisition device 20c, SC sigmal control the first oil cylinder 10a of the 4th station acquisition device 20d and commutation, buffering and the travel synchronization of the second oil cylinder 10b.
The front end of the first piston bar 11a of the first oil cylinder 10a in the first concrete cylinder 40a with the concrete piston coaxial of the first concrete cylinder 40a be connected, the front end of the second piston rod 11b of the second oil cylinder 10b in the second concrete cylinder 40b with being connected of the concrete piston coaxial of the second concrete cylinder 40b.
Water tank 50 is located between the first oil cylinder 10b and the second oil cylinder 10b and the first concrete cylinder 40a and the second concrete cylinder 40b.First piston bar 11a is connected with the first concrete piston through water tank 50, and the second piston rod 11b is connected with the second concrete piston through water tank 50.
According to the pumping installations of the embodiment of the present invention, the serial oil cylinders device described in previous embodiment is installed according to the present invention.Thus, integrate commutation, buffering and synchronous formation control.Adopt redundancy, improved the stability of pumping installations, improved manufacturing efficiency.
According to some embodiments of the present invention, at first piston 13a, move backward and the second piston 13b second place collector 20b and the 3rd station acquisition device 20c work while travelling forward, and travel forward and the second piston 13b primary importance collector 20a and the 4th station acquisition device 20d work while moving backward at first piston 13a.
Describe with reference to the accompanying drawings the pumping installations for pump truck according to an embodiment of the invention and controlling method thereof in detail.
As shown in Figure 1, according to one embodiment of present invention, the rod chamber of the first oil cylinder 10a and the second oil cylinder 10b is connected with each other logical.Primary importance collector 20a is positioned between the front end (left end as shown in Figure 1) of the first oil cylinder 10a and rear end (right-hand member as shown in Figure 1) and the front end setting of contiguous the first oil cylinder 10a, and second place collector 20b is between the front-end and back-end of the second oil cylinder 10b and the front end setting of contiguous the second oil cylinder 10b.The 3rd station acquisition device 20c between the front-end and back-end of the first oil cylinder 10a and the rear end of contiguous the first oil cylinder 10a arrange, the 4th station acquisition device 20d between the front-end and back-end of the second oil cylinder 10b and the rear end of contiguous the second oil cylinder 10b arrange.
At first piston 13a, move backward and the second piston 13b while travelling forward, by second place collector 20b, detect the second piston 13b and whether move to front limit position, and whether move to rear limit position by the 3rd station acquisition device 20c detection first piston 13a.
When any in second place collector 20b and the 3rd station acquisition device 20c detects corresponding piston and move to precalculated position, control the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if second place collector 20b detects the second piston 13b, move to front limit position, or the 3rd station acquisition device 20c is when first piston 13a being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether second place collector 20b and the 3rd station acquisition device 20c detect corresponding piston simultaneously and move to precalculated position.Specifically, if second place collector 20b detects the second piston 13b and moves to front limit position, and the 3rd station acquisition device 20c does not detect first piston 13a and moves to rear limit position, the inner chamber fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other is not enough.If the 3rd station acquisition device 20c detects first piston 13a and moves to rear limit position, and detecting the second piston 13b, second place collector 20b do not move to front limit position, the inner chamber 12 fluid interference that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.
At first piston 13a, travel forward and the second piston 13b while moving backward, by primary importance collector 20a, detect first piston 13a and whether move to front limit position, and by the 4th station acquisition device 20d, detect the second piston 13b and whether move to rear limit position.
When any in primary importance collector 20a and the 4th station acquisition device 20d detects corresponding piston and move to precalculated position, control the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if primary importance collector 20a detects first piston 13a, move to front limit position, or the 4th station acquisition device 20d is when the second piston 13b being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether primary importance collector 20a and the 4th station acquisition device 20d detect corresponding piston simultaneously and move to precalculated position.Specifically, if primary importance collector 20a detects first piston 13a and moves to front limit position, and the 4th station acquisition device 20d does not detect the second piston 13b and moves to rear limit position, inner chamber 12 fluid that communicate with each other to the first oil cylinder 10a and the second oil cylinder 10b are not enough.If the 4th station acquisition device 20c detects the second piston 13b and moves to rear limit position, and detecting first piston 13a, primary importance collector 20a do not move to front limit position, the inner chamber 12 fluid interference that communicate with each other from the first oil cylinder 10a and the second oil cylinder 10b.
Describe in detail with reference to the accompanying drawings according to second embodiment's of the present invention pumping installations for pump truck and controlling method thereof.
As shown in Figure 2, according to the embodiment of the present invention, the rodless cavity of the first oil cylinder 10a and the second oil cylinder 10b is connected with each other logical.Primary importance collector 20a is positioned between the front end (left end as shown in Figure 2) of the first oil cylinder 10a and rear end (right-hand member as shown in Figure 2) and the front end setting of contiguous the first oil cylinder 10a, and second place collector 20b is between the front-end and back-end of the second oil cylinder 10b and the front end setting of contiguous the second oil cylinder 10b.The 3rd station acquisition device 20c between the front-end and back-end of the first oil cylinder 10a and the rear end of contiguous the first oil cylinder 10a arrange, the 4th station acquisition device 20d between the front-end and back-end of the second oil cylinder 10b and the rear end of contiguous the second oil cylinder 10b arrange.
At first piston 13a, move backward and the second piston 13b while travelling forward, by second place collector 20b, detect the second piston 13b and whether move to front limit position, and by the 3rd station acquisition device 20c, detect first piston 13a and move to rear limit position.
Any in second place collector 20b and the 3rd station acquisition device 20c detects and when corresponding piston moves to precalculated position, controls the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if second place collector 20b detects the second piston 13b, move to front limit position, or the 3rd station acquisition device 20c is when first piston 13a being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether second place collector 20b and the 3rd station acquisition device 20c detect corresponding piston simultaneously and move to precalculated position.Specifically, if second place collector 20b detects the second piston 13b and moves to front limit position, and detecting first piston 13a, the 3rd station acquisition device 20c do not move to rear limit position, the inner chamber 12 fluid interference that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.If the 3rd station acquisition device 20c detects first piston 13a and moves to rear limit position, and second place collector 20b does not detect the second piston 13b and moves to front limit position, inner chamber 12 fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other are not enough.
At first piston 13a, travel forward and the second piston 13b while moving backward, by primary importance collector 20a, detect first piston 13a and whether move to front limit position, and by the 4th station acquisition device 20d, detect the second piston 13b and whether move to rear limit position.
When any in primary importance collector 20a and the 4th station acquisition device 20d detects corresponding piston and move to precalculated position, control the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if primary importance collector 20a detects first piston 13a, move to front limit position, or the 4th station acquisition device 20d is when the second piston 13b being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether primary importance collector 20a and the 4th station acquisition device 20d detect corresponding piston simultaneously and move to precalculated position.Specifically, if primary importance collector 20a detects first piston 13a and moves to front limit position, and detecting the second piston 13b, the 4th station acquisition device 20d do not move to rear limit position, the inner chamber 12 fluid interference that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.If the 4th station acquisition device 20c detects the second piston 13b and moves to rear limit position, and primary importance collector 20a does not detect first piston 13a and moves to front limit position, inner chamber 12 fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other are not enough.
Describe in detail with reference to the accompanying drawings according to the 3rd the embodiment's of the present invention pumping installations for pump truck and controlling method thereof.
As shown in Figure 3, according to the 3rd embodiment of the present invention, the rod chamber of the first oil cylinder 10a and the second oil cylinder 10b is connected with each other logical.Primary importance collector 20a is positioned between the front end (left end as shown in Figure 3) of the first oil cylinder 10a and rear end (right-hand member as shown in Figure 3) and the front end setting of contiguous the first oil cylinder 10a, and second place collector 20b is between the front-end and back-end of the second oil cylinder 10b and the front end setting of contiguous the second oil cylinder 10b.The 3rd station acquisition device 20c and the 4th station acquisition device 20d are located in water tank 40.
At first piston 13a, move backward and the second piston 13b while travelling forward, by second place collector 20b, detect the second piston 13b and whether move to front limit position, and whether move to rear limit position by the 3rd station acquisition device 20c detection first piston 13a.
When any in second place collector 20b and the 3rd station acquisition device 20c detects corresponding piston and move to precalculated position, control the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if second place collector 20b detects the second piston 13b, move to front limit position, or the 3rd station acquisition device 20c is when first piston 13a being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether second place collector 20b and the 3rd station acquisition device 20c detect corresponding piston simultaneously and move to precalculated position.Specifically, if second place collector 20b detects the second piston 13b and moves to front limit position, and the 3rd station acquisition device 20c does not detect first piston 13a and moves to rear limit position, inner chamber 12 fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other are not enough.If the 3rd station acquisition device 20c detects first piston 13a and moves to rear limit position, and detecting the second piston 13b, second place collector 20b do not move to front limit position, the inner chamber 12 fluid interference that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.
At first piston 13a, travel forward and the second piston 13b while moving backward, by primary importance collector 20a, detect first piston 13a and whether move to front limit position, and by the 4th station acquisition device 20d, detect the second piston 13b and whether move to rear limit position.
Any in primary importance collector 20a and the 4th station acquisition device 20d detects and when corresponding piston moves to precalculated position, controls the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if primary importance collector 20a detects first piston 13a, move to front limit position, or the 4th station acquisition device 20d is when the second piston 13b being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether primary importance collector 20a and the 4th station acquisition device 20d detect corresponding piston simultaneously and move to precalculated position, specifically, if primary importance collector 20a detects first piston 13a and moves to front limit position, and the 4th station acquisition device 20d does not detect the second piston 13b and moves to rear limit position, inner chamber 12 fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other are not enough.If the 4th station acquisition device 20c detects the second piston 13b and moves to rear limit position, and detecting first piston 13a, primary importance collector 20a do not move to front limit position, the inner chamber 12 fluid interference that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.
Describe in detail with reference to the accompanying drawings according to the 4th the embodiment's of the present invention pumping installations for pump truck and controlling method thereof.
As shown in Figure 4, according to the 4th embodiment of the present invention, the rodless cavity of the first oil cylinder 10a and the second oil cylinder 10b is connected with each other logical.Primary importance collector 20a is positioned between the front end (left end as shown in Figure 4) of the first oil cylinder 10a and rear end (right-hand member as shown in Figure 4) and the front end setting of contiguous the first oil cylinder 10a, and second place collector 20b is between the front-end and back-end of the second oil cylinder 10b and the front end setting of contiguous the second oil cylinder 10b.The 3rd station acquisition device 20c and the 4th station acquisition device 20d are located in water tank 40.
At first piston 13a, move backward and the second piston 13b while travelling forward, by second place collector 20b, detect the second piston 13b and whether move to front limit position, and whether move to front limit position by the 3rd station acquisition device 20c detection first piston 13a.
Any in second place collector 20b and the 3rd station acquisition device 20c detects and when corresponding piston moves to precalculated position, controls the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if second place collector 20b detects the second piston 13b, move to front limit position, or the 3rd station acquisition device 20c is when first piston 13a being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether second place collector 20b and the 3rd station acquisition device 20c detect corresponding piston simultaneously and move to precalculated position.Specifically, if second place collector 20b detects the second piston 13b and moves to front limit position, and detecting first piston 13a, the 3rd station acquisition device 20c do not move to rear limit position, the inner chamber 12 fluid interference that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.If the 3rd station acquisition device 20c detects first piston 13a and moves to rear limit position, and second place collector 20b does not detect the second piston 13b and moves to front limit position, inner chamber 12 fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other are not enough.
At first piston 13a, travel forward and the second piston 13b while moving backward, by primary importance collector 20a, detect first piston 13a and whether move to front limit position, and by the 4th station acquisition device 20d, detect the second piston 13b and whether move to rear limit position.
When any in primary importance collector 20a and the 4th station acquisition device 20d detects corresponding piston and move to precalculated position, control the first oil cylinder 10a and the second oil cylinder 10b commutation.In other words, if primary importance collector 20a detects first piston 13a, move to front limit position, or the 4th station acquisition device 20d is when the second piston 13b being detected and moving to rear limit position, the first oil cylinder 10a and the second oil cylinder 10b commutation.
Judge whether primary importance collector 20a and the 4th station acquisition device 20d detect corresponding piston simultaneously and move to precalculated position, specifically, if primary importance collector 20a detects first piston 13a and moves to front limit position, and detecting the second piston 13b, the 4th station acquisition device 20d do not move to rear limit position, the inner chamber 12 fluid interference that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other.If the 4th station acquisition device 20c detects the second piston 13b and moves to rear limit position, and primary importance collector 20a does not detect first piston 13a and moves to front limit position, inner chamber 12 fluid that the first oil cylinder 10a and the second oil cylinder 10b communicate with each other are not enough.
Inner chamber 12 fluid deficiencies or interference testing result for communicating with each other according to the first oil cylinder 10a of first to fourth embodiment of the present invention and the second oil cylinder 10b as shown in table 2.
Table 2
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiments, scope of the present invention is limited by claim and equivalent thereof.
Claims (2)
1. the controlling method of a serial oil cylinders device, described serial oil cylinders device comprises the first and second oil cylinders and the first to fourth station acquisition device that is one another in series and arranges abreast, align with the front-end and back-end of described the second oil cylinder respectively being orthogonal on the axial first direction of described the first oil cylinder in the front-end and back-end of described the first oil cylinder, described the first and second station acquisition devices are in alignment with each other and are respectively used to detect the front limit position of the first piston of described the first oil cylinder and the second piston of described the second oil cylinder on described first direction, described the third and fourth station acquisition device is in alignment with each other and is respectively used to detect the rear limit position of described first piston and described the second piston on described first direction, described controlling method comprises the following steps:
Described first piston move backward and during described the second piston advances forward by the described the 3rd and second place collector detect described the first and second pistons and whether move to precalculated position;
Any in the described second and the 3rd station acquisition device detects and when corresponding piston moves to precalculated position, controls the first and second oil cylinders commutations;
Judge whether the described second and the 3rd station acquisition device detects corresponding piston simultaneously and move to precalculated position, if in the described second and the 3rd station acquisition device only one corresponding piston detected and move to precalculated position, the interference of inner chamber fluid or deficiency that described the first and second oil cylinders communicate with each other, the inner chamber repairing that benefit draining assembly communicates with each other to described the first and second oil cylinders or the inner chamber draining communicating with each other from described the first and second oil cylinders;
At described first piston, travel forward and described the second piston detects described the first and second pistons by the described first and the 4th station acquisition device while moving backward whether moves to precalculated position;
Any in the described first and the 4th station acquisition device detects and when corresponding piston moves to precalculated position, controls the first and second oil cylinders commutations; With
Judge whether the described first and the 4th station acquisition device detects corresponding piston simultaneously and move to precalculated position, if in the described second and the 3rd station acquisition device only one corresponding piston detected and move to precalculated position, the interference of inner chamber fluid or deficiency that described the first and second oil cylinders communicate with each other, the inner chamber repairing that described benefit draining assembly communicates with each other to described the first and second oil cylinders or the inner chamber draining communicating with each other from described the first and second oil cylinders.
2. the controlling method of serial oil cylinders device according to claim 1, it is characterized in that, analyze deficiency or the interference state of the inner chamber fluid that described the first and second oil cylinders of detecting for three times communicate with each other, make the inner chamber repairing that described benefit draining assembly communicates with each other to described the first and second oil cylinders or the inner chamber draining communicating with each other from described the first and second oil cylinders.
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| CN103498837B (en) * | 2013-09-30 | 2016-03-16 | 中联重科股份有限公司 | Piston stroke detection device, hydraulic system control equipment and method and engineering machinery |
| CN103573727B (en) * | 2013-11-07 | 2015-10-14 | 中联重科股份有限公司 | Reversing control method and device for series oil cylinders and concrete pumping system |
| CN103670995B (en) * | 2013-12-05 | 2017-01-11 | 中联重科股份有限公司 | Concrete pumping system, control device and control method |
| CN104847616A (en) * | 2014-07-01 | 2015-08-19 | 北汽福田汽车股份有限公司 | Pumping method and pumping system |
| CN104196692B (en) * | 2014-07-15 | 2017-01-18 | 三一汽车制造有限公司 | Pumping equipment, pumping system and reversing control device and method of pumping system |
| CN104454709A (en) * | 2014-10-21 | 2015-03-25 | 安徽星马专用汽车有限公司 | Concrete pumping equipment and reversing method for pumping oil cylinder of concrete pumping equipment |
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| DE3840892A1 (en) * | 1988-12-05 | 1990-06-07 | Putzmeister Maschf | METHOD AND DEVICE FOR CONTROLLING A TWO-CYLINDER FUEL PUMP |
| DE3910120A1 (en) * | 1989-03-29 | 1990-10-04 | Putzmeister Maschf | CONTROL ARRANGEMENT FOR A TWO-CYLINDER FUEL PUMP |
| DE19542258A1 (en) * | 1995-11-13 | 1997-05-15 | Putzmeister Maschf | Method and device for controlling a two-cylinder thick matter pump |
| DE102004015419A1 (en) * | 2004-03-26 | 2005-10-13 | Putzmeister Ag | Apparatus and method for controlling a slurry pump |
| CN201650934U (en) * | 2010-01-14 | 2010-11-24 | 飞翼股份有限公司 | Hydraulic oil leakage detecting device for concrete pump hydraulic oil cylinder |
| CN102330715B (en) * | 2011-07-14 | 2013-03-27 | 中联重科股份有限公司 | Concrete pumping equipment, series oil cylinders and stroke adaptive tail end compensation method thereof |
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