CN103866814B - Flexible pipe follow-up device and hydraulic grab machinery - Google Patents
Flexible pipe follow-up device and hydraulic grab machinery Download PDFInfo
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- CN103866814B CN103866814B CN201410115989.0A CN201410115989A CN103866814B CN 103866814 B CN103866814 B CN 103866814B CN 201410115989 A CN201410115989 A CN 201410115989A CN 103866814 B CN103866814 B CN 103866814B
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Abstract
The invention discloses a kind of flexible pipe follow-up device and hydraulic grab machinery, relate to technical field of engineering machinery.Solve prior art and there is low technical problem in application life of flexible pipe.This flexible pipe follow-up device comprises energy-storage travelling wave tube, flexible pipe and hydraulic energy conversion driving mechanism, and hydraulic energy conversion driving mechanism is connected between energy-storage travelling wave tube and flexible pipe; Be stored in energy-storage travelling wave tube by hydraulic energy after the mechanical energy produced in flexible pipe extending process can be converted to hydraulic energy by hydraulic energy conversion driving mechanism, hydraulic energy conversion driving mechanism can also receive the hydraulic energy of energy-storage travelling wave tube release and utilize this hydraulic energy to drive flexible pipe to regain.This hydraulic grab machinery comprises hydraulic grab body, bucket body folding oil cylinder, turntable and flexible pipe follow-up device provided by the invention.The present invention, for improving the application life of flexible pipe, reduces the power attenuation of hydraulic system.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of flexible pipe follow-up device and the hydraulic grab machinery of this flexible pipe follow-up device is set.
Background technology
Continuous wall hydraulic grab is hydraulic grab machinery one wherein, and it is basic engineering construction machinery, and construction cost is low, efficiency of construction is high, and its excavation depth can reach 100 meters.Closed and the folding of continuous wall hydraulic grab body is driven by the oil cylinder (this oil cylinder can be called: bucket body folding oil cylinder) on its framework.When hydraulic grab promotes or when transferring, the flexible pipe that reel is wound around also will with grab bucket body synchronization lifting, and how to realize is synchronously a key technology of hydraulic grab.
In order to solve the problem, pump Direct driver hydraulic motor in prior art, is adopted to drive flexible pipe lifting.At present, also there is technology to adopt Compress Spring to realize flexible pipe with grab bucket body synchronization lifting, be specially when body of grabbing bucket declines, reel rotates under the pulling force of flexible pipe, and by specific device by spring-compressed storage power, when body of grabbing bucket rises, spring releases energy and drives reel reversion to regain flexible pipe.
The applicant finds: prior art at least exists following technical problem:
Adopt pump Direct driver hydraulic motor to drive flexible pipe lifting in prior art, its major defect is that hydraulic motor applies maximum pull to flexible pipe all the time, this reduces the application life of flexible pipe.
Adopt Compress Spring to realize flexible pipe with grab bucket body synchronization lifting, although this decreases power attenuation, the size of Compress Spring is too large, not only somewhat expensive, and it is processed and installation all will be subject to larger restriction; Meanwhile, when after spring failure, will directly cause flexible pipe cannot Synchronous lifting, the flexible pipe that grab bucket body cannot may be mentioned in groove racks, and causes the application life of flexible pipe low, and body of grabbing bucket proposes will become very difficult in groove.
Summary of the invention
One of them object of the present invention proposes a kind of flexible pipe follow-up device and arranges the hydraulic grab machinery of this flexible pipe follow-up device, solves prior art and there is low technical problem in application life of flexible pipe.
Preferred technical scheme in many technical schemes provided by the invention also solves existing synchronization lifting technology and there is complex structure, cannot the problem of Timeliness coverage and maintenance once go wrong, and this point will be explained below.Many technique effects that optimal technical scheme of the present invention can produce refer to hereafter sets forth.
For achieving the above object, the invention provides following technical scheme:
The flexible pipe follow-up device that the embodiment of the present invention provides, comprises energy-storage travelling wave tube, flexible pipe and hydraulic energy conversion driving mechanism, wherein:
Described hydraulic energy conversion driving mechanism is connected between described energy-storage travelling wave tube and flexible pipe;
Be stored in described energy-storage travelling wave tube by described hydraulic energy after the mechanical energy produced in described flexible pipe extending process can be converted to hydraulic energy by described hydraulic energy conversion driving mechanism, described hydraulic energy conversion driving mechanism can also receive the hydraulic energy of described energy-storage travelling wave tube release and utilize this hydraulic energy to drive described flexible pipe to regain.
In one preferably or alternatively embodiment, described energy-storage travelling wave tube is accumulator, and described hydraulic energy conversion driving mechanism comprises hydraulic motor, fuel tank, reel and support, wherein:
Described reel is flexibly connected with described support, described reel is connected with the rotating shaft of described hydraulic motor, and described reel can drive the rotating shaft of described hydraulic motor relative to described holder pivots, the rotating shaft of described hydraulic motor also can drive described reel relative to described holder pivots;
Described hydraulic motor comprises the first hydraulic fluid port and the second hydraulic fluid port, and described first hydraulic fluid port is connected with described fuel tank, and described second hydraulic fluid port is connected with the hydraulic oil port of described energy-storage travelling wave tube;
The hydraulic oil that described first hydraulic fluid port can be sucked when described rotating shaft is rotated along predetermined direction exports from described second hydraulic fluid port, and described rotating shaft can also along the counter-rotation of described predetermined direction under the drive of the hydraulic oil of described second hydraulic fluid port input;
Described soft tube winding is on described reel, and wherein one end of described flexible pipe is stretched out outside described reel, and the wherein other end of described flexible pipe is connected with static element, and described static element and described support keep geo-stationary.
In one preferably or alternatively embodiment, the oil-in of described fuel tank is connected with described first hydraulic fluid port by the first one way valve, and the oil-out of described fuel tank is connected with described first hydraulic fluid port by the second one way valve.
In one preferably or alternatively embodiment, described flexible pipe follow-up device also comprises draining oil circuit, and described draining oil circuit comprises reversal valve and draining overflow valve, wherein:
The outlet of described draining overflow valve is connected with fuel tank, described reversal valve is connected on the oil circuit between the hydraulic oil port of described energy-storage travelling wave tube and the import of described draining overflow valve, and described reversal valve can control the whether conducting of oil circuit between the hydraulic oil port of described energy-storage travelling wave tube and the import of described draining overflow valve.
In one preferably or alternatively embodiment, described flexible pipe follow-up device also comprises repairing oil circuit, and described repairing oil circuit comprises fueller, and the oil-out of described fueller is connected with the hydraulic oil port of described energy-storage travelling wave tube and described second hydraulic fluid port.
In one preferably or alternatively embodiment, described repairing oil circuit also comprises repairing one way valve, the oil-out of described repairing one way valve is connected with the hydraulic oil port of described energy-storage travelling wave tube and described second hydraulic fluid port, the oil-out of described fueller is connected with the oil-in of described repairing one way valve, wherein:
Described repairing oil circuit also comprises the reducing valve between oil-out and the oil-in of described repairing one way valve being connected to described fueller, the oil-out of described fueller is connected with the import of described reducing valve, and the outlet of described reducing valve is connected with the oil-in of described repairing one way valve; Or,
In one preferably or alternatively embodiment, described repairing oil circuit also comprises the overflow oil circuit between oil-out and the oil-in of described repairing one way valve being connected to described fueller, the import of described draining overflow valve is connected by overflow oil circuit with between the oil-out of the oil-in of described repairing one way valve, described fueller, and described draining overflow valve is electromagnetic relief valve.Draining overflow valve also can adopt other valves beyond electromagnetic relief valve to realize.
In one preferably or alternatively embodiment, when the rotating shaft that the service pressure of described reducing valve or described electromagnetic relief valve is less than described hydraulic motor drives described reel to be enough to roll whole described flexible pipes described hydraulic oil pressure 1/2;
The inlet pressure of described draining overflow valve is not more than the outlet pressure of described reducing valve.
In one preferably or alternatively embodiment; described flexible pipe follow-up device also comprises overload protection oil circuit; described overload protection oil circuit comprises protection overflow valve; the import of described protection overflow valve is connected on the oil circuit between described second hydraulic fluid port and the hydraulic oil port of described energy-storage travelling wave tube, and the outlet of described protection overflow valve is connected with fuel tank.
The hydraulic grab machinery that the embodiment of the present invention provides, comprises the flexible pipe follow-up device that hydraulic grab body, bucket body folding oil cylinder, turntable and the arbitrary technical scheme of the present invention provide, wherein:
Wherein one end of described flexible pipe is connected with the hydraulic fluid port of described bucket body folding oil cylinder, and the wherein other end of described flexible pipe is connected with the oil outlet end of hydraulic oil source and/or fuel tank;
Described energy-storage travelling wave tube and/or described hydraulic energy conversion driving mechanism are arranged on described turntable.
In one preferably or alternatively embodiment, described hydraulic grab machinery also comprises controller, elevator, connection cord, reel rotate number of turns checkout gear and spool turns number of turns checkout gear, and the reel of described elevator is connected by described connection cord with described hydraulic grab body and drives by described connection cord described hydraulic grab body to rise or discharge described hydraulic grab body by described connection cord and declines;
Described reel rotates number of turns checkout gear and is fixedly connected with described support and is electrically connected with described controller, and described spool turns number of turns checkout gear is fixedly connected with the support body of described elevator and is electrically connected with described controller;
The length of described connection cord that the length that the turning collar numerical value that described controller is used for rotating according to described reel the described reel that number of turns checkout gear detects obtains the release of described reel or the described flexible pipe rolled, the number of turns value of described spool turns detected according to described spool turns number of turns checkout gear obtain the release of described reel or roll, and control described reel when the difference of the length of the described connection cord that length and the described reel of the described flexible pipe that the inconsistent and/or described reel of length of the described connection cord that length and the described reel of the described flexible pipe that described reel discharges discharge is rolled are rolled exceedes preset range and stop action (control hoist motor when reel is driven by hoist motor and stop action).
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
Changing after the mechanical energy produced in flexible pipe extending process can be converted to hydraulic energy by driving mechanism due to the hydraulic energy in the flexible pipe follow-up device that the embodiment of the present invention provides is stored in energy-storage travelling wave tube by hydraulic energy, hydraulic energy conversion driving mechanism can also receive the hydraulic energy of energy-storage travelling wave tube release and utilize this hydraulic energy to drive flexible pipe to regain, because the power that hydraulic energy changes driving mechanism withdrawal flexible pipe converts into the mechanical energy produced in flexible pipe extending process, so the size of this power can change along with the number of hydraulic energy in energy-storage travelling wave tube, when flexible pipe extending is the longest, hydraulic energy in energy-storage travelling wave tube is maximum, the power of hydraulic energy conversion driving mechanism to the withdrawal flexible pipe that flexible pipe applies is also maximum, when flexible pipe extending is shorter, hydraulic energy in energy-storage travelling wave tube is less, the power of hydraulic energy conversion driving mechanism to the withdrawal flexible pipe that flexible pipe applies is also less, because hydraulic energy conversion driving mechanism can not apply maximum pulling force to flexible pipe all the time, so can not cause damage to flexible pipe or the infringement caused flexible pipe is reduced to minimum, improve the application life of flexible pipe.
In prior art, use spring complicated as energy-storage travelling wave tube structure bulky, and, once spring force diminishes cannot mention all flexible pipes, and when there is this situation, do not have alternative scheme to work on yet.Therefore, preferred technical scheme in many technical schemes provided by the invention reduces power attenuation by arranging accumulator on the one hand, on the other hand, is provided with repairing oil circuit, when accumulator storage power is not enough, the lifting of flexible pipe can be carried out by the manual operation of repairing oil circuit.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The schematic diagram of the annexation between the chief component of a kind of flexible pipe follow-up device that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the annexation between the chief component of the another kind of flexible pipe follow-up device that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of the annexation between the chief component of the hydraulic grab machinery that Fig. 3 provides for the embodiment of the present invention;
Reference numeral: 1, hydraulic motor; 2, support; 201, reel encoder; 3, reel; 4, flexible pipe; 5, energy-storage travelling wave tube; 6, repairing one way valve; 7, reducing valve; 8, reversal valve; 9, draining overflow valve; 10, fuel tank; 11, cleaner; 12, the first one way valve; 13, the second one way valve; 14, overflow valve is protected; 15, electromagnetic relief valve; 20, main frame; 21, elevator; 22, master winch encoder; 24, turntable; 30, hydraulic grab body.
Detailed description of the invention
Content of the present invention and the distinctive points between the present invention and prior art can be understood below with reference to accompanying drawing Fig. 1 ~ Fig. 3 and word content.Hereafter by accompanying drawing and the mode enumerating embodiment more of the present invention, technical scheme of the present invention (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characteristic in the present embodiment, any technical scheme is all one or more in the technical characteristic of plurality of optional or optional technical scheme, cannot exhaustive all alternative technical characteristics of the present invention and alternative technical scheme in order to describe succinct to need in presents, also the embodiment being not easy to each technical characteristic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: arbitrary technological means provided by the invention can be carried out replacing or two or more technological means or technical characteristic arbitrarily provided by the invention being carried out mutually combining and obtain new technical scheme.Any technical characteristic in the present embodiment and any technical scheme all do not limit the scope of the invention, protection scope of the present invention should comprise those skilled in the art do not pay creative work thinkable any alternate embodiments and those skilled in the art new technical scheme that two or more technological means or technical characteristic arbitrarily provided by the invention are carried out mutually combining and obtain.
Embodiments provide a kind of power attenuation little, can be undertaken that the lifting of flexible pipe, flexible pipe are not fragile by the manual operation of repairing oil circuit when accumulator storage power is not enough, the flexible pipe follow-up device of long service life, saving energy consumption and the hydraulic grab machinery of this flexible pipe follow-up device is set.
Below in conjunction with the elaboration that Fig. 1 ~ Fig. 3 carries out specifically to technical scheme provided by the invention.
As shown in FIG. 1 to 3, the flexible pipe follow-up device that the embodiment of the present invention provides comprises energy-storage travelling wave tube (being preferably accumulator) 5, flexible pipe 4 and hydraulic energy conversion driving mechanism (can comprise hydraulic motor 1, fuel tank 10, reel 3 and support 2), wherein:
Hydraulic energy conversion driving mechanism is connected between energy-storage travelling wave tube 5 and flexible pipe 4.
Flexible pipe 4 can stretch out after the mechanical energy produced in process is converted to hydraulic energy and be stored in energy-storage travelling wave tube 5 by hydraulic energy by hydraulic energy conversion driving mechanism, and hydraulic energy conversion driving mechanism can also receive the hydraulic energy of energy-storage travelling wave tube 5 release and utilize this hydraulic energy to drive flexible pipe 4 to regain.
Because flexible pipe 4 can stretch out after the mechanical energy produced in process is converted to hydraulic energy by the hydraulic energy conversion driving mechanism in the flexible pipe follow-up device that the embodiment of the present invention provides, hydraulic energy is stored in energy-storage travelling wave tube 5, hydraulic energy conversion driving mechanism can also receive the hydraulic energy of energy-storage travelling wave tube 5 release and utilize this hydraulic energy to drive flexible pipe 4 to regain, because hydraulic energy is changed driving mechanism and is regained the power of flexible pipe 4 and stretch out into flexible pipe 4 mechanical energy produced in process and convert, so the size of this power can change along with the number of hydraulic energy in energy-storage travelling wave tube 5, when flexible pipe 4 stretches out the longest, hydraulic energy in energy-storage travelling wave tube 5 is maximum, the power of hydraulic energy conversion driving mechanism to the withdrawal flexible pipe 4 that flexible pipe 4 applies is also maximum, when flexible pipe 4 stretches out shorter, hydraulic energy in energy-storage travelling wave tube 5 is less, the power of hydraulic energy conversion driving mechanism to the withdrawal flexible pipe 4 that flexible pipe 4 applies is also less, because hydraulic energy conversion driving mechanism can not apply maximum pulling force to flexible pipe 4 all the time, so can not cause damage to flexible pipe 4 or the infringement caused flexible pipe 4 is reduced to minimum, improve the application life of flexible pipe 4.
As one preferably or alternatively embodiment, energy-storage travelling wave tube 5 is preferably accumulator, and hydraulic energy conversion driving mechanism preferably comprises hydraulic motor 1, fuel tank 10, reel 3 and support 2, wherein:
Reel 3 is flexibly connected with support 2, and reel 3 is connected with the rotating shaft of hydraulic motor 1, and reel 3 can drive the rotating shaft of hydraulic motor 1 to rotate relative to support 2.The rotating shaft of hydraulic motor 1 also can drive reel 3 to rotate relative to support 2.
Hydraulic motor 1 comprises the first hydraulic fluid port and the second hydraulic fluid port, and the first hydraulic fluid port is connected with fuel tank 10, and the second hydraulic fluid port is connected with the hydraulic oil port of energy-storage travelling wave tube 5.
The hydraulic oil that first hydraulic fluid port sucks can be exported from the second hydraulic fluid port when rotating shaft is rotated along predetermined direction, rotating shaft can also along the counter-rotation of predetermined direction under the drive of the hydraulic oil of the second hydraulic fluid port input.
Flexible pipe 4 is wrapped on reel 3, and wherein one end of flexible pipe 4 can be stretched out outside reel 3, the wherein other end of flexible pipe 4 can be connected with static element (being preferably the oil outlet end of hydraulic oil source and/or the oil-in of fuel tank 10), and static element is fixedly connected with both supports 2, both are integral type structure or both keep geo-stationary.
When energy-storage travelling wave tube 5 is accumulator, the power attenuation of system can be reduced.
Hydraulic motor 1 is two-way hydraulic motor, and it can realize the conversion of mechanical energy and hydraulic energy.When the rotating shaft of hydraulic motor 1 drives reel 3 to rotate relative to support 2, the mechanical energy that hydraulic pressure the subject of knowledge and the object of knowledge can be utilized to change realizes flexible pipe 4 and is wound around, regains, otherwise, when reel 3 drives the rotating shaft of hydraulic motor 1 to rotate relative to support 2, the release of flexible pipe 4, the mechanical energy of stretching out generation can be converted to hydraulic energy and be stored in energy-storage travelling wave tube 5.
As one preferably or alternatively embodiment, the oil-in of fuel tank 10 is connected with the first hydraulic fluid port by the first one way valve 12, and the oil-out of fuel tank 10 is connected with the first hydraulic fluid port by the second one way valve 13.
First one way valve 12 and the second one way valve 13 can limit the oil-out of fuel tank 10 only for fuel-displaced, and the oil-in of fuel tank 10 only for oil-feed, thus ensure that the oil-in of fuel tank 10 and the oil-out of fuel tank 10 are independent of each other.In the present invention can also the oil-out of fuel tank 10 arrange cleaner 11 to avoid the dirt in hydraulic oil, pollutant enters hydraulic motor 1, thus has protective effect to hydraulic motor 1.
As one preferably or alternatively embodiment, flexible pipe follow-up device also comprises draining oil circuit, draining oil circuit comprises reversal valve (being preferably 2/2-way reversal valve) 8 and draining overflow valve 9, wherein: draining overflow valve 9 can be the hydraulic valve of manual control as shown in Figure 1, also can be electromagnetic relief valve 15 as shown in Figure 2.
(this fuel tank can be same fuel tank with fuel tank 10 for the outlet of draining overflow valve 9 and fuel tank, also can be different fuel tanks from fuel tank 10) be connected, reversal valve 8 is connected on the oil circuit between the hydraulic oil port of energy-storage travelling wave tube 5 and the import of draining overflow valve 9, and reversal valve 8 can control the whether conducting of oil circuit between the hydraulic oil port of energy-storage travelling wave tube 5 and the import of draining overflow valve 9.
When needs replacing, detection or when keeping in repair energy-storage travelling wave tube 5, need to reduce the oil pressure in energy-storage travelling wave tube 5, now, can the oil circuit conducting between the hydraulic oil port of energy-storage travelling wave tube 5 and the import of draining overflow valve 9 be controlled by reversal valve 8 thus reduce the oil pressure in energy-storage travelling wave tube 5 in the mode of draining.
As one preferably or alternatively embodiment, flexible pipe follow-up device also comprises repairing oil circuit, and repairing oil circuit comprises fueller, and the oil-out of fueller is connected with the hydraulic oil port of energy-storage travelling wave tube 5 and the second hydraulic fluid port.
As one preferably or alternatively embodiment, repairing oil circuit also comprises repairing one way valve 6, the oil-out of repairing one way valve 6 is connected with the hydraulic oil port of energy-storage travelling wave tube 5 and the second hydraulic fluid port, and the oil-out of fueller is connected with the oil-in of repairing one way valve 6, wherein:
As shown in Figure 1, repairing oil circuit also comprises the reducing valve 7 between oil-out and the oil-in of repairing one way valve 6 being connected to fueller, and the oil-out of fueller is connected with the import of reducing valve 7, and the outlet of reducing valve 7 is connected with the oil-in of repairing one way valve 6; Or, as one preferably or alternatively embodiment, as shown in Figure 2, repairing oil circuit also comprises the overflow oil circuit between oil-out and the oil-in of repairing one way valve 6 being connected to fueller, is connected between the import of draining overflow valve (this draining overflow valve is preferably electromagnetic relief valve 15) with the oil-out of the oil-in of repairing one way valve 6, fueller by overflow oil circuit.Draining overflow valve also can adopt other valves beyond electromagnetic relief valve to realize.
The hydraulic oil that repairing one way valve 6 can avoid energy-storage travelling wave tube 5 to store enters the oil-out of fueller and causes hydraulic energy to lose.
Reducing valve 7 or electromagnetic relief valve 15, for limiting the oil pressure of the hydraulic oil of fueller output, are guaranteed that the hydraulic energy of energy-storage travelling wave tube 5 can as much as possiblely discharge, are improved the capacity usage ratio of the hydraulic energy stored.
Arranging of overflow oil circuit can utilize electromagnetic relief valve 15 to reach the effect achieved by reducing valve 7 as draining overflow valve fully.
As one preferably or alternatively embodiment, when the rotating shaft that the service pressure of reducing valve 7 or electromagnetic relief valve 15 is less than hydraulic motor 1 drives reel 3 to be enough to roll whole flexible pipes 4 hydraulic oil pressure 1/2.Now, the hydraulic energy that can make full use of energy-storage travelling wave tube 5 release regains pipeline to drive hydraulic motor 1, avoids the too much hydraulic oil utilizing fueller to export.
As one preferably or alternatively embodiment, the inlet pressure of draining overflow valve 9 is not more than the outlet pressure of reducing valve 7.Now, can change, when detecting or keep in repair energy-storage travelling wave tube 5, the oil pressure reduced in energy-storage travelling wave tube 5 be dropped to lower force value, thus ensure to change, to detect or the operation of maintenance energy-storage travelling wave tube 5 is reliably carried out.
Due to flexible pipe 4, to stretch out the hydraulic energy that the mechanical energy that produces in process converts comparatively limited, not necessarily enough regains flexible pipe 4, so arrange repairing oil circuit.The effect of repairing oil circuit: on the one hand for energy-storage travelling wave tube 5 provides certain back pressure, ensures that energy-storage travelling wave tube 5 normally works; On the other hand, when the energy shortage that energy-storage travelling wave tube 5 discharges is all to promote flexible pipe 4, can pass through to regulate the reducing valve 7 of repairing oil circuit or the operating pressure of electromagnetic relief valve 15, improve the oil pressure of repairing oil circuit, thus reclaim flexible pipe 4 by repairing oil circuit Direct driver reel 3.Therefore, even if time generation flexible pipe 4 cannot be mentioned automatically, also can manually promote, thus ensure that grab bucket body 30 can not rest in groove because flexible pipe 4 cannot promote.
After the reducing valve 7 of manual adjustments repairing oil circuit or the pressure of electromagnetic relief valve 15 carry out hand hoisting, pressure potential in energy-storage travelling wave tube 5 must be higher than the pressure of setting during normal work, now directly can not carry out work, otherwise energy-storage travelling wave tube 5 cannot reclaim sufficient ability by work period next time.Now need first the pressure of reducing valve 7 or electromagnetic relief valve 15 to be adjusted to setting pressure, give energy-storage travelling wave tube 5 release pressure again, namely by the reversal valve 8 in draining oil circuit, after reversal valve 8 is connected, in energy-storage travelling wave tube 5, pressure is also just consistent with the pressure that reducing valve 7 or electromagnetic relief valve 15 set.So just the subsequent work cycle can be carried out.
As one preferably or alternatively embodiment; flexible pipe follow-up device also comprises overload protection oil circuit; overload protection oil circuit comprises protection overflow valve 14; on oil circuit between the hydraulic oil port that the import of protection overflow valve 14 is connected to the second hydraulic fluid port and energy-storage travelling wave tube 5; outlet and the fuel tank (this fuel tank can be same fuel tank with fuel tank 10, can be also different fuel tanks from fuel tank 10) of protection overflow valve 14 are connected.Protection overflow valve 14 can ensure the safety of hydraulic work system.
As shown in Figure 3, the hydraulic grab machinery that the embodiment of the present invention provides, comprises the flexible pipe follow-up device that hydraulic grab body 30, bucket body folding oil cylinder, turntable 24 and the arbitrary technical scheme of the present invention provide, wherein:
Wherein one end of flexible pipe 4 is connected with the hydraulic fluid port of bucket body folding oil cylinder, this end is preferably fixedly connected with bucket body folding oil cylinder, the oil-in of the wherein other end of flexible pipe 4 and the oil outlet end of hydraulic oil source and/or fuel tank (this fuel tank can be same fuel tank with fuel tank 10, can be also different fuel tanks from fuel tank 10) is connected.
Energy-storage travelling wave tube 5 and/or hydraulic energy conversion driving mechanism are arranged on turntable 24.Energy-storage travelling wave tube 5 and hydraulic energy are changed driving mechanism and are preferably all arranged on turntable 24.Certainly, energy-storage travelling wave tube 5 and/or hydraulic energy conversion driving mechanism also can be arranged on other positions of the main frame 20 outside turntable 24.
The hydraulic oil being inputted bucket body folding oil cylinder by flexible pipe 4 can drive bucket body folding oil cylinder to switch between folding and closed two states, flexible pipe 4 can also be input to needing in bucket body folding oil cylinder handoff procedure the hydraulic oil discharged in fuel tank (this fuel tank can be same fuel tank with fuel tank 10, can be also different fuel tanks from fuel tank 10).When energy-storage travelling wave tube 5 and hydraulic energy conversion driving mechanism are arranged on the main frame 20 of hydraulic grab machinery, the space of jib can not be taken, increase the weight of jib, and security maintenance more for convenience, improves the stability of hydraulic grab machinery.
As one preferably or alternatively embodiment, hydraulic grab machinery also comprises controller, elevator 21, connection cord (be preferably wire rope), reel rotate number of turns checkout gear (being preferably reel encoder 201) and spool turns number of turns checkout gear (being preferably master winch encoder 22), and the reel of elevator 21 is connected by connection cord with hydraulic grab body 30 and drives hydraulic grab body 30 to rise by connection cord or discharge hydraulic grab body 30 by connection cord and declines.
Reel rotates number of turns checkout gear and to be fixedly connected with support 2 and reel rotates number of turns checkout gear is electrically connected with controller, and spool turns number of turns checkout gear is fixedly connected with the support body of elevator 21 and spool turns number of turns checkout gear is electrically connected with controller.
Controller is used for rotating according to reel number of turns value that reel 3 that number of turns checkout gear detects rotates and obtains the length of connection cord that reel 3 discharges or the length of the flexible pipe 4 rolled, the number of turns value of spool turns that detects according to spool turns number of turns checkout gear obtain reel release or roll, and controls reel when the difference of the length of the connection cord that the length of the flexible pipe 4 that inconsistent and/or reel 3 is rolled and reel are rolled exceedes preset range in the length of the connection cord that length and the reel of the flexible pipe 4 that reel 3 discharges discharge and stop action (control hoist motor when reel is driven by hoist motor and stop action).
Because hydraulic grab body 30 and flexible pipe 4 are synchronized with the movement, so the connection cord connecting hydraulic grab body 30 stretches out with flexible pipe 4 or the length regained should be consistent, if so both stretch out or the length variation regained is larger time, so probably going for a stroll or packing phenomenon has appearred in flexible pipe 4, if now hydraulic grab body 30 continues the very possible squeezing tube 4 of action and causes flexible pipe 4 to damage, so control reel when the difference of the length of the connection cord that the length of the flexible pipe 4 that inconsistent and/or reel 3 is rolled and reel are rolled exceedes preset range in the length of the connection cord that the length of flexible pipe 4 that reel 3 discharges and reel discharge to stop action (control hoist motor when reel is driven by hoist motor and stop action), flexible pipe 4 can be avoided to damage because of extruding, guarantee the safety of constructing.
Arbitrary technical scheme disclosed in the invention described above unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the present invention just discloses component values to illustrate technical scheme of the present invention, and the above-mentioned numerical value enumerated should not form the restriction to the invention protection domain.
If employ the word such as " first ", " second " herein to limit component, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe carry out difference as not having outside Stated otherwise to component, the implication that above-mentioned word is not special.
Simultaneously, if the invention described above discloses or relate to component or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use casting technique is integrally formed create) (obviously cannot adopt except integrally formed technique).
In addition, apply in arbitrary technical scheme disclosed in the invention described above for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts provided by the invention both can be assembled by multiple independent ingredient, and also can be one of the forming manufacture technics separate part out.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (9)
1. a flexible pipe follow-up device, is characterized in that, comprises energy-storage travelling wave tube (5), flexible pipe (4) and hydraulic energy conversion driving mechanism, wherein:
Described hydraulic energy conversion driving mechanism is connected between described energy-storage travelling wave tube (5) and flexible pipe (4);
Described flexible pipe (4) can stretch out after the mechanical energy produced in process is converted to hydraulic energy and be stored in described energy-storage travelling wave tube (5) by described hydraulic energy by described hydraulic energy conversion driving mechanism, and described hydraulic energy conversion driving mechanism can also receive hydraulic energy that described energy-storage travelling wave tube (5) discharges and utilize this hydraulic energy to drive described flexible pipe (4) to regain;
Described energy-storage travelling wave tube (5) is accumulator, and described hydraulic energy conversion driving mechanism comprises hydraulic motor (1), fuel tank (10), reel (3) and support (2), wherein:
Described reel (3) is flexibly connected with described support (2), described reel (3) is connected with the rotating shaft of described hydraulic motor (1), and described reel (3) can drive the rotating shaft of described hydraulic motor (1) to rotate relative to described support (2), the rotating shaft of described hydraulic motor (1) also can drive described reel (3) to rotate relative to described support (2);
Described hydraulic motor (1) comprises the first hydraulic fluid port and the second hydraulic fluid port, and described first hydraulic fluid port is connected with described fuel tank (10), and described second hydraulic fluid port is connected with the hydraulic oil port of described energy-storage travelling wave tube (5);
The hydraulic oil that described first hydraulic fluid port can be sucked when described rotating shaft is rotated along predetermined direction exports from described second hydraulic fluid port, and described rotating shaft can also along the counter-rotation of described predetermined direction under the drive of the hydraulic oil of described second hydraulic fluid port input;
Described flexible pipe (4) is wrapped on described reel (3), and wherein one end of described flexible pipe (4) is stretched out outside described reel (3), the wherein other end of described flexible pipe (4) is connected with the oil outlet end of hydraulic oil source.
2. flexible pipe follow-up device according to claim 1, is characterized in that, the oil-in of described fuel tank is connected with described first hydraulic fluid port by the first one way valve, and the oil-out of described fuel tank is connected with described first hydraulic fluid port by the second one way valve.
3. flexible pipe follow-up device according to claim 1, is characterized in that, described flexible pipe follow-up device also comprises draining oil circuit, and described draining oil circuit comprises reversal valve and draining overflow valve, wherein:
The outlet of described draining overflow valve is connected with fuel tank, described reversal valve is connected on the oil circuit between the hydraulic oil port of described energy-storage travelling wave tube and the import of described draining overflow valve, and described reversal valve can control the whether conducting of oil circuit between the hydraulic oil port of described energy-storage travelling wave tube and the import of described draining overflow valve.
4. flexible pipe follow-up device according to claim 3, it is characterized in that, described flexible pipe follow-up device also comprises repairing oil circuit, and described repairing oil circuit comprises fueller, and the oil-out of described fueller is connected with the hydraulic oil port of described energy-storage travelling wave tube and described second hydraulic fluid port.
5. flexible pipe follow-up device according to claim 4, it is characterized in that, described repairing oil circuit also comprises repairing one way valve, the oil-out of described repairing one way valve is connected with the hydraulic oil port of described energy-storage travelling wave tube and described second hydraulic fluid port, the oil-out of described fueller is connected with the oil-in of described repairing one way valve, wherein:
Described repairing oil circuit also comprises the reducing valve between oil-out and the oil-in of described repairing one way valve being connected to described fueller, the oil-out of described fueller is connected with the import of described reducing valve, and the outlet of described reducing valve is connected with the oil-in of described repairing one way valve; Or,
Described repairing oil circuit also comprises the overflow oil circuit between oil-out and the oil-in of described repairing one way valve being connected to described fueller, the import of described draining overflow valve is connected by overflow oil circuit with between the oil-out of the oil-in of described repairing one way valve, described fueller, and described draining overflow valve is electromagnetic relief valve.
6. flexible pipe follow-up device according to claim 5, it is characterized in that, when the rotating shaft that the service pressure of described reducing valve or described electromagnetic relief valve is less than described hydraulic motor drives described reel to be enough to roll whole described flexible pipes described hydraulic oil pressure 1/2;
The inlet pressure of described draining overflow valve is not more than the outlet pressure of described reducing valve.
7. flexible pipe follow-up device according to claim 1; it is characterized in that; described flexible pipe follow-up device also comprises overload protection oil circuit; described overload protection oil circuit comprises protection overflow valve; the import of described protection overflow valve is connected on the oil circuit between described second hydraulic fluid port and the hydraulic oil port of described energy-storage travelling wave tube, and the outlet of described protection overflow valve is connected with fuel tank.
8. a hydraulic grab machinery, is characterized in that, comprises the arbitrary described flexible pipe follow-up device of hydraulic grab body, bucket body folding oil cylinder, turntable and claim 1-7, wherein:
Wherein one end of described flexible pipe is connected with the hydraulic fluid port of described bucket body folding oil cylinder, and the wherein other end of described flexible pipe is connected with the oil outlet end of hydraulic oil source and/or fuel tank;
Described energy-storage travelling wave tube and/or described hydraulic energy conversion driving mechanism are arranged on described turntable.
9. hydraulic grab machinery according to claim 8, it is characterized in that, described hydraulic grab machinery also comprises controller, elevator, connection cord, reel rotate number of turns checkout gear and spool turns number of turns checkout gear, and the reel of described elevator is connected by described connection cord with described hydraulic grab body and drives by described connection cord described hydraulic grab body to rise or discharge described hydraulic grab body by described connection cord and declines;
Described reel rotates number of turns checkout gear and is fixedly connected with described support and is electrically connected with described controller, and described spool turns number of turns checkout gear is fixedly connected with the support body of described elevator and is electrically connected with described controller;
The length of described connection cord that the length that the turning collar numerical value that described controller is used for rotating according to described reel the described reel that number of turns checkout gear detects obtains the release of described reel or the described flexible pipe rolled, the number of turns value of described spool turns detected according to described spool turns number of turns checkout gear obtain the release of described reel or roll, and control described reel when the difference of the length of the described connection cord that length and the described reel of the described flexible pipe that the inconsistent and/or described reel of length of the described connection cord that length and the described reel of the described flexible pipe that described reel discharges discharge is rolled are rolled exceedes preset range and stop action.
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| CN108458094B (en) * | 2018-04-13 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Driving system of milling wheel and slot milling machine |
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| CN202865900U (en) * | 2012-08-28 | 2013-04-10 | 北京南车时代机车车辆机械有限公司 | Continuous wall grab bucket and hydraulic system of hose reel thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2921368B2 (en) * | 1993-11-15 | 1999-07-19 | 株式会社大林組 | Excavator |
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| CN201835304U (en) * | 2010-08-12 | 2011-05-18 | 徐州徐工基础工程机械有限公司 | Automatic control system for pressing and rolling pipe of continuous wall grab bucket |
| CN202865900U (en) * | 2012-08-28 | 2013-04-10 | 北京南车时代机车车辆机械有限公司 | Continuous wall grab bucket and hydraulic system of hose reel thereof |
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