CN207243309U - Telescopic arm hydraulic control system, telescopic arm and hoisting machinery - Google Patents
Telescopic arm hydraulic control system, telescopic arm and hoisting machinery Download PDFInfo
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- CN207243309U CN207243309U CN201721044665.8U CN201721044665U CN207243309U CN 207243309 U CN207243309 U CN 207243309U CN 201721044665 U CN201721044665 U CN 201721044665U CN 207243309 U CN207243309 U CN 207243309U
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Abstract
Hoisting machinery technical field is the utility model is related to, more particularly to a kind of telescopic arm hydraulic control system, telescopic arm and hoisting machinery.The telescopic arm hydraulic control system of the utility model, including telescopic oil cylinder and cylinder arm pin driving mechanism and there is oil feeding line and oil extraction oil circuit, cylinder arm pin driving mechanism includes cylinder pin oil cylinder and arm pin oil cylinder, and wherein, cylinder pin oil cylinder and/or arm pin oil cylinder use double acting single pole oil cylinder, and rod chamber connects to form differential cylinder with rodless cavity during reset.Due to using one-way cylinder and relying only on the situation of spring reset relative to prior art middle cylinder pin oil cylinder and arm pin oil cylinder, the cylinder pin oil cylinder and/or arm pin oil cylinder of the utility model are resetted without relying only on spring again, and it can be resetted under the action of differential hydraulic power, dependence of the reseting procedure to spring can be reduced, reduce the risk that can not be resetted caused by spring failure, therefore, the utility model can effectively improve the reset reliability of cylinder arm pin driving mechanism.
Description
Technical field
Hoisting machinery technical field is the utility model is related to, more particularly to a kind of telescopic arm hydraulic control system, telescopic arm
And hoisting machinery.
Background technology
Single-cylinder bolt type telescopic boom realizes the flexible of telescopic arm by the cooperation of telescopic oil cylinder and cylinder arm pin actuating mechanism
Function, wherein, cylinder arm pin actuating mechanism includes cylinder pin, arm pin and the cylinder arm pin driving machine with cylinder pin oil cylinder and arm pin oil cylinder
Structure, the plug of cylinder pin hydraulic oil cylinder driving cylinder pin, to control the pars contractilis of telescopic oil cylinder and the arm joint of telescopic arm to lock or separate, arm pin oil
Cylinder actuating arm pin plugs, to control two adjacent sections arm joint to lock or separate.When certain joint arm section needs overhanging, need first by cylinder pin
Hydraulic oil cylinder driving cylinder pin acts, and by the pars contractilis of telescopic oil cylinder and the joint arm section locking, arm pin oil cylinder actuating arm pin action afterwards will
Lockup state between the arm joint and previous joint arm section releases, and the joint arm section can be carried out with the pars contractilis of telescopic oil cylinder at this time
It is flexible.And after arm joint reaches target position, arm pin acts under the driving of arm pin oil cylinder first, and the joint arm section and target-arm are locked
Only together, then acted again by cylinder pin hydraulic oil cylinder driving cylinder pin, release the locking between the pars contractilis of telescopic oil cylinder and arm joint.
In the prior art, cylinder pin oil cylinder and arm pin oil cylinder use one-way cylinder, during the work time, cylinder pin oil cylinder and
Arm pin oil cylinder can only be resetted under the action of the spring being arranged in rodless cavity, i.e. after cylinder pin and arm pin are extracted, cylinder
Only driving cylinder pin and arm pin reinsert under the action of spring power for pin oil cylinder and arm pin oil cylinder.Since spring makes for a long time
It can be deteriorated with the rear ability for replying deformation, the plastic deformation even failure phenomenon such as fracture easily occur, therefore, only rely on spring
Realize the reset function of cylinder pin oil cylinder and arm pin oil cylinder, reset reliability is poor, influences the normal flexible of arm joint, in some instances it may even be possible to lead
Cause security incident.Especially, when return pressure is higher, only rely on spring reset and also often occur not resetting or resetting time mistake
The problem of long, be easy to cause shutdown risk, influences the job security of hoisting machinery.
In addition, in the prior art, the hydraulic oil needed for cylinder pin oil cylinder and arm pin oil cylinder is typically by being arranged on telescopic oil cylinder
Core pipe device inside cylinder rod conveys, since this fuel system needs specially to set core pipe device in telescopic oil cylinder, because
This, can cause telescopic oil cylinder structure complex, increase the difficulty of processing of telescopic oil cylinder.
Utility model content
A technical problem to be solved in the utility model is：Improve the reset reliability of cylinder arm pin driving mechanism.
In order to solve the above-mentioned technical problem, the utility model first aspect provides a kind of telescopic arm hydraulic control system,
It includes telescopic oil cylinder and cylinder arm pin driving mechanism, and cylinder arm pin driving mechanism includes cylinder pin oil cylinder and arm pin oil cylinder, cylinder pin oil cylinder
For controlling the arm joint of the pars contractilis of telescopic oil cylinder and telescopic arm to lock or separate, arm by driving the plug of the cylinder pin of telescopic arm
Pin oil cylinder is used to control two adjacent sections arm joint to lock or separate by driving the arm pin of telescopic arm to plug, so that telescopic oil cylinder
Pars contractilis can drive arm joint to stretch when flexible relative to the fixed part of telescopic oil cylinder, and telescopic arm hydraulic system also has permission
The oil extraction oil circuit that hydraulic oil flows to the oil feeding line of cylinder arm pin driving mechanism and allows hydraulic oil to be discharged from cylinder arm pin driving mechanism,
And wherein, cylinder pin oil cylinder is double acting single pole oil cylinder, when cylinder pin hydraulic oil cylinder driving cylinder pin is extracted, the rod chamber of cylinder pin oil cylinder with
Oil feeding line connects, and when cylinder pin hydraulic oil cylinder driving cylinder pin is inserted into, the rod chamber of cylinder pin oil cylinder connected with rodless cavity to be formed it is differential
Oil cylinder and with oil extraction oil communication；And/or arm pin oil cylinder is double acting single pole oil cylinder, when arm pin oil cylinder actuating arm pin is extracted,
The rod chamber of arm pin oil cylinder is connected with oil feeding line, and when arm pin oil cylinder actuating arm pin is inserted into, the rod chamber of arm pin oil cylinder with
Rodless cavity connect to be formed differential cylinder and with oil extraction oil communication.
Alternatively, telescopic arm hydraulic control system further include for master cylinder pin oil cylinder and arm pin oil cylinder and oil feeding line and
The oil-way switching apparatus of oil extraction oil circuit break-make, oil-way switching apparatus have first state, the second state and the third state, wherein：
When in the first state, the rod chamber of oil-way switching apparatus master cylinder pin oil cylinder is connected with oil feeding line and arm pin oil cylinder has
Rod cavity and oil extraction oil communication；When in the second state, the rod chamber of oil-way switching apparatus master cylinder pin oil cylinder and arm pin oil
The rod chamber of cylinder is with oil extraction oil communication, also, the rodless cavity of cylinder pin oil cylinder is connected with rod chamber and/or the nothing of arm pin oil cylinder
Rod cavity is connected with rod chamber；When in the third state, rod chamber and the oil extraction oil circuit of oil-way switching apparatus master cylinder pin oil cylinder
The rod chamber of connection and arm pin oil cylinder is connected with oil feeding line.
Alternatively, the rodless cavity of cylinder pin oil cylinder and/or the rodless cavity of arm pin oil cylinder and oil extraction oil communication；Oil circuit switching dress
Put including reversal valve, reversal valve includes the first hydraulic fluid port, the second hydraulic fluid port, the 3rd hydraulic fluid port and the 4th hydraulic fluid port, the first hydraulic fluid port and fuel feeding oil
Road connects, and the second hydraulic fluid port and oil extraction oil communication, the 3rd hydraulic fluid port are connected with the rod chamber of cylinder pin oil cylinder, the 4th hydraulic fluid port and arm pin oil
The rod chamber connection of cylinder, also, reversal valve has the first working position, the second working position and the 3rd working position, wherein：Work as reversal valve
During in the first working position, the first hydraulic fluid port is connected with the 3rd hydraulic fluid port and the second hydraulic fluid port is connected with the 4th hydraulic fluid port so that oil circuit switches
Device is in first state；When reversal valve is in the second working position, the cut-off of the first hydraulic fluid port and the second hydraulic fluid port and the 3rd hydraulic fluid port and
4th hydraulic fluid port connects so that oil-way switching apparatus is in the second state；When reversal valve is in three working positions, the first hydraulic fluid port
Connected with the 4th hydraulic fluid port and the second hydraulic fluid port is connected with the 3rd hydraulic fluid port so that oil-way switching apparatus is in the third state.
Alternatively, cylinder pin oil cylinder has the first spring, and the first spring, which is used to apply, makes what cylinder pin hydraulic oil cylinder driving cylinder pin was inserted into
Active force；And/or arm pin oil cylinder has second spring, second spring is used to apply the work for being inserted into arm pin oil cylinder actuating arm pin
Firmly.
Alternatively, oil feeding line is connected with one in the rod chamber and rodless cavity of telescopic oil cylinder.
Alternatively, oil feeding line with pressure is larger in the rod chamber and rodless cavity of telescopic oil cylinder one connect.
Alternatively, telescopic arm hydraulic control system further includes first pressure selection device, and first pressure selection device is used for
Control oil feeding line with pressure is larger in the rod chamber and rodless cavity of telescopic oil cylinder one connect.
Alternatively, first pressure selection device includes the first check valve and the second check valve, the oil inlet of the first check valve
Connected with the rod chamber of telescopic oil cylinder, the oil inlet of the second check valve is connected with the rodless cavity of telescopic oil cylinder, the first check valve
The oil outlet of oil outlet and the second check valve is connected with oil feeding line；Alternatively, first pressure selection device includes shuttle valve, shuttle valve
Two oil inlets connected respectively with the rod chamber and rodless cavity of telescopic oil cylinder, and the oil outlet of the first shuttle valve and oil feeding line connect
It is logical.
Alternatively, oil extraction oil circuit connects for less one with pressure in the rod chamber and rodless cavity of telescopic oil cylinder.
Alternatively, telescopic arm hydraulic control system further includes second pressure selection device, and second pressure selection device is used for
Control oil extraction oil circuit connects for less one with pressure in the rod chamber and rodless cavity of telescopic oil cylinder.
Alternatively, second pressure selection device includes the 3rd check valve and the 4th check valve, the oil outlet of the 3rd check valve
Connected with the rod chamber of telescopic oil cylinder, the oil outlet of the 4th check valve is connected with the rodless cavity of telescopic oil cylinder, the 3rd check valve
The oil inlet of oil inlet and the 4th check valve with oil extraction oil communication.
Alternatively, telescopic arm hydraulic control system further includes energy storage equipment, energy storage equipment and oil feeding line and/or oil extraction oil
Road connects, for oil storage accumulation of energy.
Alternatively, telescopic arm hydraulic control system further includes the 5th check valve, and the 5th check valve is arranged on oil extraction oil circuit
And for controlling oil extraction direction one-way conduction of the oil extraction oil circuit along cylinder arm pin driving mechanism.
The utility model second aspect additionally provides a kind of telescopic arm, it includes arm joint, cylinder pin and arm pin, also, it is also
Telescopic arm hydraulic control system including the utility model.
The utility model third aspect additionally provides a kind of hoisting machinery, it includes the telescopic arm of the utility model.
In the utility model, cylinder pin oil cylinder and/or arm pin oil cylinder use double acting single pole oil cylinder, and rod chamber during reset
Connect to form differential cylinder with rodless cavity, due to oily using single-acting relative to prior art middle cylinder pin oil cylinder and arm pin oil cylinder
Cylinder and the situation for relying only on spring reset, the cylinder pin oil cylinder and/or arm pin oil cylinder of the utility model without rely only on again spring into
Row resets, and can be resetted under the action of differential hydraulic power, can reduce dependence of the reseting procedure to spring, reduce because
The risk that can not be resetted caused by spring failure, therefore, the utility model can effectively improve answering for cylinder arm pin driving mechanism
Position reliability.
By the way that the exemplary embodiment of the utility model is described in detail referring to the drawings, the utility model its
Its feature and its advantage will be made apparent from.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 shows the hydraulic schematic diagram of the telescopic arm hydraulic control system of one embodiment of the utility model.
In figure：
1st, telescopic oil cylinder；
2nd, first pressure selection device；21st, the first check valve；22nd, the second check valve；
3rd, the first accumulator；
4th, reversal valve；P, the first hydraulic fluid port；T, the second hydraulic fluid port；A, the 3rd hydraulic fluid port；B, the 4th hydraulic fluid port；
5th, cylinder pin oil cylinder；51st, the first spring；
6th, arm pin oil cylinder；61st, second spring；
8th, second pressure selection device；81st, the 3rd check valve；82nd, the 4th check valve；
9th, the 5th check valve；
I, oil feeding line；II, oil extraction oil circuit.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
Have carry out creative work under the premise of all other embodiments obtained, shall fall within the protection scope of the present invention.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part for specification.
In the description of the utility model, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " horizontal,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or position relationship be normally based on orientation or position shown in the drawings
Relation is put, description the utility model is for only for ease of and simplifies description, in the case where not making conversely explanation, these nouns of locality
Do not indicate that and imply that the device of meaning or element there must be specific orientation or with specific azimuth configuration and operation, because
This is it is not intended that limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component in itself
Wide is inside and outside.
In the description of the utility model, it is to be understood that limit zero using the word such as " first ", " second "
Part, it is only for easy to be distinguished to corresponding parts, such as there is no Stated otherwise, above-mentioned word does not have particular meaning,
Therefore it is not intended that limitation to scope of protection of the utility model.
Fig. 1 shows one embodiment of the utility model telescopic arm hydraulic control system.With reference to Fig. 1, the utility model
The telescopic arm hydraulic control system provided, including telescopic oil cylinder 1 and cylinder arm pin driving mechanism, cylinder arm pin driving mechanism include cylinder
Oil cylinder 5 and arm pin oil cylinder 6 are sold, cylinder pin oil cylinder 5 is used to control the flexible of telescopic oil cylinder 1 by driving the cylinder pin of telescopic arm to plug
Portion and the arm joint of telescopic arm are locked or separated, and arm pin oil cylinder 6 is used to control adjacent two by driving the arm pin of telescopic arm to plug
Joint arm section is locked or separated, so that the pars contractilis of telescopic oil cylinder 1 can be with swing arm when flexible relative to the fixed part of telescopic oil cylinder 1
Section is flexible, and telescopic arm hydraulic system also has the oil feeding line I for allowing hydraulic oil to flow to cylinder arm pin driving mechanism and allows liquid
The oil extraction oil circuit II that pressure oil is discharged from cylinder arm pin driving mechanism, wherein, cylinder pin oil cylinder 5 is double acting single pole oil cylinder, when cylinder pin oil
When 5 driving cylinder pin of cylinder is extracted, the rod chamber of cylinder pin oil cylinder 5 is connected with oil feeding line I, and when 5 driving cylinder pin of cylinder pin oil cylinder is inserted into
When, the rod chamber of cylinder pin oil cylinder 5 connects to form differential cylinder and connect with oil extraction oil circuit II with rodless cavity；And/or arm pin oil cylinder
6 be double acting single pole oil cylinder, and when 6 actuating arm pin of arm pin oil cylinder is extracted, the rod chamber of arm pin oil cylinder 6 is connected with oil feeding line I,
And when 6 actuating arm pin of arm pin oil cylinder is inserted into, the rod chamber of arm pin oil cylinder 6 connects to form differential cylinder and and oil extraction with rodless cavity
Oil circuit II is connected.
The telescopic arm hydraulic control system of the utility model, its cylinder pin oil cylinder 5 and/or arm pin oil cylinder 6 use double acting list
Rod oil cylinder, and rod chamber connects to form differential cylinder with rodless cavity when resetting, due to relative to prior art middle cylinder pin oil cylinder and
Arm pin oil cylinder using one-way cylinder and relies only on the situation of spring reset, the cylinder pin oil cylinder 5 and/or arm pin of the utility model
Oil cylinder 6 is resetted without relying only on spring again, and can be resetted under the action of differential hydraulic power, therefore, it is possible to subtract
Few dependence of the cylinder arm pin driving mechanism reseting procedure to spring, reduces the risk that can not be resetted caused by spring failure, from
And effectively improve the reset reliability of cylinder arm pin driving mechanism.
It can be appreciated that being in insert state under cylinder pin and arm pin normality, the utility model middle cylinder pin oil cylinder 5, which resets, refers to cylinder
Pin 5 driving cylinder pin of oil cylinder reinserts, and arm pin oil cylinder 6 resets, and refers to that 6 actuating arm pin of arm pin oil cylinder reinserts.
Differential cylinder is formed when resetting in order to facilitate cylinder pin oil cylinder 5 and/or arm pin oil cylinder 6, in the utility model, is stretched
Contracting arm hydraulic control system can be further included for master cylinder pin oil cylinder 5 and arm pin oil cylinder 6 and oil feeding line I and oil extraction oil circuit II
The oil-way switching apparatus of break-make, the oil-way switching apparatus have first state, the second state and the third state, wherein：When in
During first state, the rod chamber of oil-way switching apparatus master cylinder pin oil cylinder 5 is connected with oil feeding line I and arm pin oil cylinder 6 has bar
Chamber is connected with oil extraction oil circuit II；When in the second state, the rod chamber of oil-way switching apparatus master cylinder pin oil cylinder 5 and arm pin oil
The rod chamber of cylinder 6 is connected with oil extraction oil circuit II, also, the rodless cavity of cylinder pin oil cylinder 5 is connected with rod chamber and/or arm pin oil cylinder
6 rodless cavity is connected with rod chamber；When in the third state, the rod chamber of oil-way switching apparatus master cylinder pin oil cylinder 5 and row
Oil circuit II is connected and the rod chamber of arm pin oil cylinder 6 is connected with oil feeding line I.
, can be by controlling oil-way switching apparatus in first state, the second state by setting above-mentioned oil-way switching apparatus
Switch between the third state easily to control cylinder arm pin driving mechanism to act, wherein：When oil-way switching apparatus is in first
During state, pressure oil flows into the rod chamber of cylinder pin oil cylinder 5, and cylinder pin oil cylinder 5 acts, and driving cylinder pin is extracted；Work as oil-way switching apparatus
During in the third state, pressure oil flows into the rod chamber of arm pin oil cylinder 6, and arm pin oil cylinder 6 acts, and actuating arm pin is extracted；And when oil
When circuit switching device switches to the second state by first state and the third state respectively, cylinder pin oil cylinder 5 and arm pin oil cylinder 6 are driven respectively
Dynamic cylinder pin and arm pin reinsert, i.e. cylinder pin oil cylinder 5 and arm pin oil cylinder 6 are resetted respectively, due to the oil circuit of the utility model
When switching device is arranged to it and is in the second state, make cylinder pin oil cylinder 5 rod chamber and arm pin oil cylinder 6 rod chamber and oil extraction
Oil circuit II connect, and make the rodless cavity of cylinder pin oil cylinder 5 connect with rod chamber and/or the rodless cavity of arm pin oil cylinder 6 and rod chamber company
It is logical, therefore so that cylinder pin oil cylinder 5 and/or arm pin oil cylinder 6 can connect the difference to be formed and be connected with oil extraction oil circuit II when resetting
Dynamic circuit, being made every effort to promote by differential hydraulic resets cylinder pin oil cylinder 5 and/or arm pin oil cylinder 6, so as to reduce caused by spring failure
The risk that can not be resetted, improves the reset reliability of cylinder arm pin driving mechanism.
And in order to further improve the reset reliability of arm pin driving mechanism, in the utility model, cylinder pin oil cylinder 5 can be with
Also there is the first spring 51, the first spring 51 is used to apply the active force for being inserted into 5 driving cylinder pin of cylinder pin oil cylinder；And/or arm pin
Oil cylinder 6 can also have second spring 61, and second spring 61 is used to apply the active force for being inserted into 6 actuating arm pin of arm pin oil cylinder.
On the basis of being arranged to cylinder pin oil cylinder 5 to connect when resetting and to form differential cylinder, further by cylinder pin oil
Cylinder 5 is arranged to also have the first spring 51, can make cylinder pin oil cylinder 5 in the common of 51 elastic force of differential hydraulic power and the first spring
Resetted under effect, so as to further improve the reset reliability of cylinder pin oil cylinder 5, and be conducive to shorten cylinder pin oil cylinder 5
Resetting time.And on the basis of being arranged to arm pin oil cylinder 6 to connect when resetting and to form differential cylinder, further by arm
Pin oil cylinder 6 is arranged to also have second spring 61, can make arm pin oil cylinder 6 in 61 elastic force of differential hydraulic power and second spring
Resetted under collective effect, so as to further improve the reset reliability of arm pin oil cylinder 6, and be conducive to shorten arm pin oil
The resetting time of cylinder 6.
In addition, it is cylinder arm pin driving mechanism to further solve to set core pipe device in telescopic oil cylinder in the prior art
The problem of telescopic oil cylinder structure is more complicated caused by the mode of fuel feeding, difficulty of processing is larger, the utility model can be further
Oil feeding line I is arranged to connect with one in the rod chamber and rodless cavity of telescopic oil cylinder 1.Based on this, the utility model
Cylinder arm pin driving mechanism directly can take oil out of one in the rod chamber and rodless cavity of telescopic oil cylinder 1, due to without existing again
Special core pipe device is set in telescopic oil cylinder 1, therefore, can effectively simplify the structure of telescopic oil cylinder 1, reduce telescopic oil cylinder 1
Difficulty of processing.
Wherein, it is highly preferred that oil feeding line I can be larger with pressure in the rod chamber and rodless cavity of the telescopic oil cylinder 1
One connection, cylinder arm pin driving mechanism is obtained the hydraulic oil of elevated pressures all the time, make 5 He of cylinder pin oil cylinder
Arm pin oil cylinder 6 can more reliably driving cylinder pin and arm pin extract.
Moreover, in the utility model, when oil feeding line I is arranged to the rod chamber and rodless cavity with the telescopic oil cylinder 1
During larger one connection of middle pressure, oil extraction oil circuit II could be provided as pressure in rod chamber and rodless cavity with telescopic oil cylinder 1
A less connection.So cylinder arm pin driving mechanism oil return can be exhausted directly in the rod chamber and rodless cavity of telescopic oil cylinder 1
In less one of pressure so that can be to stretching while cylinder arm pin driving mechanism takes oil in the high pressure chest from telescopic oil cylinder 1
Oil return in the low pressure chamber of contracting oil cylinder 1, so not only improves and realizes cylinder arm pin driving mechanism more smoothly oil supply and discharge process, also have
Beneficial to the influence for preventing that cylinder arm pin driving mechanism oil supply and discharge process is operating normally telescopic oil cylinder 1, so as to help further to carry
The functional reliability of high telescopic arm hydraulic control system.
Wherein, oil feeding line I and oil extraction oil circuit II high pressure chest (the i.e. pressure with telescopic oil cylinder 1 respectively is controlled for convenience
A larger chamber) connected with low pressure chamber (i.e. the less chamber of pressure), in the utility model, telescopic arm hydraulic control system
System may further include first pressure selection device 2 and second pressure selection device 8, wherein：First pressure selection device 2 is used
Pressure is larger in rod chambers and rodless cavity of the control oil feeding line I with telescopic oil cylinder 1 one connects；Second pressure selection dress
8 are put to be used to control oil extraction oil circuit II to connect for less one with pressure in the rod chamber and rodless cavity of telescopic oil cylinder 1.
By setting first pressure selection device 2, it is possible to achieve oil feeding line I is connected with 1 high pressure chest of telescopic oil cylinder
Automatically control, facilitate cylinder arm pin driving mechanism reliably to obtain the higher hydraulic oil of pressure.And by setting second pressure to select
Device 8, it is possible to achieve connect and automatically control with 1 low pressure chamber of telescopic oil cylinder to oil extraction oil circuit II, facilitate cylinder arm pin driving mechanism
Smooth oil return.
The utility model is described further with reference to the embodiment shown in Fig. 1.In this embodiment, cylinder
Pin oil cylinder 5 and arm pin oil cylinder 6 reset under the collective effect of differential hydraulic power and spring power, also, 5 He of cylinder pin oil cylinder
Arm pin oil cylinder 6 takes oil and the oil return into the low pressure chamber of telescopic oil cylinder 1 from the high pressure chest of telescopic oil cylinder 1.
As shown in Figure 1, in this embodiment, telescopic arm hydraulic control system includes telescopic oil cylinder 1, cylinder pin oil cylinder 5, arm pin
Oil cylinder 6, reversal valve 4, oil feeding line I, oil extraction oil circuit II and first pressure selection device 2 and second pressure selection device 8.
Wherein, telescopic oil cylinder 1 is used to drive the arm joint of telescopic arm to stretch, when pars contractilis and the arm joint of telescopic oil cylinder 1 lock
When, the pars contractilis of telescopic oil cylinder 1 stretches, you can drives corresponding arm joint to stretch together.In this embodiment, telescopic oil cylinder 1
Cylinder rod is fixed and cylinder barrel stretches, i.e. the fixed part of telescopic oil cylinder 1 is cylinder rod, and the pars contractilis of telescopic oil cylinder 1 is cylinder barrel.Flexible oil
The cylinder rod of cylinder 1 can be fixed with the arm tail of the basic arm joint in each arm joint.
Cylinder pin oil cylinder 5 is plugged for driving cylinder pin, to control the cylinder barrel of telescopic oil cylinder 1 (pars contractilis) to lock or divide with arm joint
Open.When 5 driving cylinder pin of cylinder pin oil cylinder is inserted into, cylinder barrel and the arm joint of telescopic oil cylinder 1 are locked, the two is relatively fixed, and stretch oil
The cylinder barrel of cylinder 1 stretches, and corresponding arm joint can be driven to stretch；When 5 driving cylinder pin of cylinder pin oil cylinder is extracted, the cylinder of telescopic oil cylinder 1
Lock-out state between cylinder and arm joint is released from, the two is separated, and can be movable relatively, when the cylinder barrel of telescopic oil cylinder 1 stretches again, arm joint
No longer stretch therewith.
As shown in Figure 1, in this embodiment, cylinder pin oil cylinder 5 uses double acting single pole cylinder structure, and it has the first bullet
Spring 51.Moreover, the cylinder barrel of cylinder pin oil cylinder 5 is fixed and cylinder rod is stretched, i.e. the fixed part of cylinder pin oil cylinder 5 is cylinder barrel, cylinder pin oil cylinder 5
Pars contractilis be cylinder rod.The cylinder barrel of cylinder pin oil cylinder 5 can be fixed on the cylinder barrel of telescopic oil cylinder 1 so that cylinder pin oil cylinder 5 can be with
1 cylinder barrel of telescopic oil cylinder to move together, facilitate cylinder pin oil cylinder 5 by from cylinder pin coordinate control realize telescopic oil cylinder 1 with it is different
Locking or separated between arm joint.Wherein, it is arranged between cylinder pin oil cylinder 5 and cylinder pin：When the cylinder rod of cylinder pin oil cylinder 5 is stretched out, cylinder pin
Insertion；When the cylinder rod of cylinder pin oil cylinder 5 is retracted, cylinder pin is extracted.First spring 51, which is arranged to apply cylinder pin oil cylinder 5, stretches out cylinder rod
Active force, i.e. the first spring 51 be used for apply make 5 driving cylinder pin of cylinder pin oil cylinder be inserted into active force, that is, the first spring 51
For applying the active force for resetting arm pin oil cylinder 5.
Arm pin oil cylinder 6 is plugged for actuating arm pin, to control two adjacent sections arm joint to lock or separate.When arm pin oil cylinder 6 is driven
When swing arm pin is inserted into, two adjacent sections arm joint is locked, the two is relatively fixed, and can be stretched together；When 6 actuating arm of arm pin oil cylinder
When pin is extracted, the lock-out state between two adjacent sections arm joint is released from, the two is separated, and can be movable relatively so that a joint arm section can
Relatively another arm joint is stretched under the drive of telescopic oil cylinder 1.
As shown in Figure 1, in this embodiment, arm pin oil cylinder 6 also uses double acting single pole cylinder structure, and it has second
Spring 61.Fixed and cylinder rod is stretched moreover, arm pin oil cylinder 6 is also cylinder barrel, i.e. the fixed part of arm pin oil cylinder 6 be cylinder barrel, and arm pin is oily
The pars contractilis of cylinder 6 is cylinder rod.The cylinder barrel of arm pin oil cylinder 6 can also be fixed on the cylinder barrel of telescopic oil cylinder 1 so that arm pin oil cylinder 6
It can together be moved with 1 cylinder barrel of telescopic oil cylinder, facilitate arm pin oil cylinder 6 to realize different alternate arms by coordinating from arm pin to control
Locking or separated between section.Wherein, it is arranged between arm pin oil cylinder 6 and arm pin：When the cylinder rod of arm pin oil cylinder 6 is stretched out, arm pin
Insertion；When the cylinder rod of arm pin oil cylinder 6 is retracted, arm pin is extracted.Second spring 61, which is arranged to apply arm pin oil cylinder 6, stretches out cylinder rod
Active force, i.e. second spring 61 be used for apply make 6 driving cylinder pin of arm pin oil cylinder be inserted into active force, that is, second spring 61
Apply the active force for resetting arm pin oil cylinder 6.
In Fig. 1, cylinder pin oil cylinder 5 and arm pin oil cylinder 6 are arranged side by side, and the cylinder barrel of the two is fixed together, so favourable
In saving installation space, make overall structure compacter.But in fact, cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can not also be fixed on
Together, it is provided separately.
Oil feeding line I is used for realization the fuel feeding to cylinder pin oil cylinder 5 and arm pin oil cylinder 6, and oil extraction oil circuit II is used for realization cylinder pin
The oil return of oil cylinder 5 and arm pin oil cylinder 6.Reversal valve 4 is used as oil-way switching apparatus, for master cylinder pin oil cylinder 5 and arm pin oil cylinder 6 with
On off operating mode between oil feeding line I and oil extraction oil circuit II.First pressure selection device 2 is used to control oil feeding line I with stretching
Larger one of the rod chamber of oil cylinder I and pressure in rodless cavity connects, so that cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can be from flexible
Oil is taken in the high pressure chest of oil cylinder 1；Second pressure selection device 8 is then used for the rod chamber for controlling oil extraction oil circuit II and telescopic oil cylinder 1
One less with pressure in rodless cavity connects, so that cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can be to the low pressure chambers of telescopic oil cylinder 1
Middle oil extraction.
In this embodiment, by the cooperation of reversal valve 4, first pressure selection device 2 and second pressure selection device 8,
Cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can be made to be resetted under the collective effect of differential hydraulic power and spring power, and
And cylinder pin oil cylinder 5 and arm pin oil cylinder 6 is set to take oil from the high pressure chest of telescopic oil cylinder 1 and to the low pressure chamber of telescopic oil cylinder 1
Middle oil return.
It is preferred below to illustrate how the embodiment makes cylinder pin oil cylinder 5 and arm pin oil cylinder 6 be in differential hydraulic power and bullet
Resetted under the collective effect of spring elastic force.
As shown in Figure 1, in this embodiment, reversal valve 4 includes the first hydraulic fluid port P, the second hydraulic fluid port T, the 3rd hydraulic fluid port A and the 4th
Hydraulic fluid port B, the first hydraulic fluid port P are connected with oil feeding line I, and the second hydraulic fluid port T is connected with oil extraction oil circuit II, the 3rd hydraulic fluid port A and cylinder pin oil cylinder 5
Rod chamber connection, the 4th hydraulic fluid port B connects with the rod chamber of arm pin oil cylinder 6, and reversal valve 4 is with the first working position, the second work
Make position and the 3rd working position, wherein：When reversal valve 4 is in the first working position, the first hydraulic fluid port P is connected and with the 3rd hydraulic fluid port A
Two hydraulic fluid port T are connected with the 4th hydraulic fluid port B；When reversal valve 4 is in the second working position, the first hydraulic fluid port P cut-offs and the second hydraulic fluid port T and the
Three hydraulic fluid port A and the 4th hydraulic fluid port B are connected；When reversal valve 4 is in three working positions, the first hydraulic fluid port P connected with the 4th hydraulic fluid port B and
Second hydraulic fluid port T is connected with the 3rd hydraulic fluid port A.
Specifically, as shown in Figure 1, the reversal valve 4 of the embodiment is the three-position four-way valve with Y type Median Functions, it
One working position is left position in Fig. 1, and to be middle position in Fig. 1, its 3rd working position is the right side in Fig. 1 for its second work
Position.It can be appreciated that oil-way switching apparatus is not limited to the structure type of reversal valve 4 shown in the embodiment, for example, reversal valve 4
Other structure of reversing valve outside three-position four-way valve can also be used, alternatively, oil-way switching apparatus can also include multiple valves, by
Multiple valves, which coordinate, realizes corresponding function.
Moreover, as shown in Figure 1, the rodless cavity of cylinder pin oil cylinder 5 and the rodless cavity of arm pin oil cylinder 6 connect with oil extraction oil circuit II
It is logical, i.e. the rodless cavity of cylinder pin oil cylinder 5 and the rodless cavity of arm pin oil cylinder 6 are connected with the second hydraulic fluid port T of reversal valve 4.
Based on above-mentioned setting, can by control reversal valve 4 the first working position, the second working position and the 3rd working position it
Between switch, to control oil-way switching apparatus to switch between first state, the second state and the third state, so that master cylinder pin is oily
The cylinder rod of cylinder 5 and arm pin oil cylinder 6 is stretched out or retracted, and then master cylinder pin and arm pin insert or pull out.
Wherein, when reversal valve 4 is in the first working position (left position), oil-way switching apparatus is in first state, cylinder pin oil
The rod chamber of cylinder 5 is connected with oil feeding line I, and therefore, pressure oil can be via oil feeding line I and the first working position of reversal valve 4
Flow into the rod chamber of cylinder pin oil cylinder 5, and since the rodless cavity of cylinder pin oil cylinder 5 at this time is connected with oil extraction oil circuit II, cylinder pin is oily
The hydraulic coupling of 5 rod chamber of cylinder is more than the hydraulic coupling of 5 rodless cavity of cylinder pin oil cylinder, and the hydraulic coupling of 5 rod chamber of cylinder pin oil cylinder can overcome
The hydraulic coupling of 5 rodless cavity of cylinder pin oil cylinder and the elastic force of the first spring 51, make the cylinder rod of cylinder pin oil cylinder 5 retract, and drive cylinder pin to pull out
Go out.During the cylinder rod of cylinder pin oil cylinder 5 is retracted, the first spring 51 is compressed, and stores elastic potential energy.
When reversal valve 4 switches to the second working position (middle position) by the first working position (left position), oil-way switching apparatus is by
One state switches to the second state, and the rod chamber and rodless cavity of cylinder pin oil cylinder 5 are connected with oil extraction oil circuit II so that cylinder pin oil cylinder
5 form differential cylinder, although the rod chamber of cylinder pin oil cylinder 5 and the oil liquid pressure of rodless cavity are equal at this time, due to cylinder pin oil cylinder 5
The active area of rodless cavity is more than the active area of 5 rod chamber of cylinder pin oil cylinder, and therefore, in cylinder pin oil cylinder 5 producing makes cylinder pin oil cylinder 5
Cylinder rod there is the differential hydraulic power for stretching out trend again, also, the elasticity stored by the first spring 51 can be released so that
The cylinder rod of cylinder pin oil cylinder 5 can be under the collective effect of 5 differential hydraulic power of 51 elastic force of the first spring and cylinder pin oil cylinder again
Stretch out, drive cylinder pin to reinsert, realize the reset of cylinder pin oil cylinder 5.Since the rod chamber of arm pin oil cylinder 6 and rodless cavity are equal at this time
Connected with oil extraction oil circuit II, therefore, the cylinder rod of arm pin oil cylinder 6 is held under the action of second spring 61 and differential hydraulic power stretches
Do well, arm pin is held in insert state, is failure to actuate.
When reversal valve 4 is in the 3rd working position (right position), oil-way switching apparatus is in the third state, arm pin oil cylinder 6
Rod chamber is connected with oil feeding line I, and therefore, pressure oil can flow into arm via the 3rd working position of oil feeding line I and reversal valve 4
The rod chamber of oil cylinder 6 is sold, and since the rodless cavity of arm pin oil cylinder 6 at this time is connected with oil extraction oil circuit II, arm pin oil cylinder 6 has
The hydraulic coupling of rod cavity is more than the hydraulic coupling of 6 rodless cavity of arm pin oil cylinder, and the hydraulic coupling of 6 rod chamber of arm pin oil cylinder can overcome arm pin oily
The hydraulic coupling of 6 rodless cavity of cylinder and the elastic force of second spring 61, make the cylinder rod of arm pin oil cylinder 6 retract, and band swing arm pin is extracted.In arm
During the cylinder rod retraction for selling oil cylinder 6, second spring 61 is compressed, and stores elastic potential energy.
And when reversal valve 4 switches to the second working position (middle position) by the 3rd working position (right position), oil-way switching apparatus by
The third state switches to the second state, and the rod chamber and rodless cavity of arm pin oil cylinder 6 are connected with oil extraction oil circuit II so that arm pin oil
Cylinder 6 forms differential cylinder, although the rod chamber of arm pin oil cylinder 6 and the oil liquid pressure of rodless cavity are equal at this time, due to arm pin oil
The active area of 6 rodless cavity of cylinder is more than the active area of 6 rod chamber of arm pin oil cylinder, and therefore, in arm pin oil cylinder 6 producing makes arm pin oily
The cylinder rod of cylinder 6 has the differential hydraulic power for stretching out trend again, also, the elasticity stored by second spring 61 can be released,
It can be weighed so as to the cylinder rod of arm pin oil cylinder 6 under the collective effect of 6 differential hydraulic power of 61 elastic force of second spring and arm pin oil cylinder
New to stretch out, band swing arm pin reinserts, and realizes the reset of arm pin oil cylinder 6.Also, due to the rod chamber of cylinder pin oil cylinder 5 at this time and
Rodless cavity is connected with oil extraction oil circuit II, and therefore, the cylinder rod of cylinder pin oil cylinder 5 is held in stretching state, and cylinder pin is held in insertion shape
State, is failure to actuate.
As it can be seen that in this embodiment, when reversal valve 4 is in middle position, it is poor that cylinder pin oil cylinder 5 connects formation with arm pin oil cylinder 6
Dynamic oil cylinder so that cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can answer under the collective effect of differential hydraulic power and spring power
Position.Wherein, when resetting, its rod chamber connects to form differential circuit cylinder pin oil cylinder 5 with rodless cavity, and the cylinder rod of cylinder pin oil cylinder 5 can
To be stretched out again under the collective effect of 51 elastic force of differential hydraulic power and the first spring, drive cylinder pin to reinsert, realize multiple
Position；When resetting, its rod chamber connects to form differential circuit arm pin oil cylinder 6 with rodless cavity, and the cylinder rod of arm pin oil cylinder 6 can be in difference
Stretched out again under the collective effect of 61 elastic force of hydrodynamic forces and second spring, band swing arm pin reinserts, and realizes and resets.
Due to reset can be realized under the double action of differential hydraulic power and spring power, accordingly, with respect to only according to
Reliability higher is resetted come situation about resetting, reset force bigger by one in differential hydraulic power and spring power, reset is fast
Degree faster, resetting time is shorter, even if running into the elevated situation of return pressure, also can reliable reset, avoid shut down risk.And
And since differential hydraulic power can realize reseting procedure together with spring power, and the elastic force for no longer relying only on spring is answered
Position, even if replying the less able of deformation after spring long-time service, cylinder pin oil cylinder 5 and arm pin oil cylinder 6 also still may be in differential liquid
Resetted under the action of pressure, therefore, can effectively reduce occur can not reset issues risk, prevent shutdown phenomenon.
It will be illustrated next how the embodiment makes cylinder pin oil cylinder 5 and arm pin oil cylinder 6 be taken from the high pressure chest of telescopic oil cylinder 1
Oil and the oil return into the low pressure chamber of telescopic oil cylinder 1.
As shown in Figure 1, in this embodiment, oil feeding line I has by first pressure selection device 2 and telescopic oil cylinder 1
Rod cavity one (high pressure chest) larger with pressure in rodless cavity connects；Oil extraction oil circuit II is by second pressure selection device 8 with stretching
The rod chamber of contracting oil cylinder 1 one (low pressure chamber) less with pressure in rodless cavity connects.Wherein, first pressure selection device 2 wraps
The first check valve 21 and the second check valve 22 are included, the oil inlet of the first check valve 21 is connected with the rod chamber of telescopic oil cylinder 1, and second
The oil inlet of check valve 22 is connected with the rodless cavity of telescopic oil cylinder 1, the oil outlet of the first check valve 21 and the second check valve 22
Oil outlet is connected with oil feeding line I.And second pressure selection device 8 includes the 3rd check valve 81 and the 4th check valve 82, the
The oil outlet of three check valves 81 is connected with the rod chamber of telescopic oil cylinder 1, the oil outlet of the 4th check valve 82 and the nothing of telescopic oil cylinder 1
Rod cavity connects, and the oil inlet of the 3rd check valve 81 and the oil inlet of the 4th check valve 82 are connected with oil extraction oil circuit II.
Specifically, as shown in Figure 1, the oil outlet of the first check valve 21 and the second check valve 22 by oil feeding line I with
The hydraulic fluid port P connections of reversal valve 4；The oil inlet of 3rd check valve 81 and the 4th check valve 82 passes through oil extraction oil circuit II and commutation
The second hydraulic fluid port T connections of valve 4.
Based on above-mentioned set-up mode, the first check valve 21 and the second check valve 22 can be to 1 rod chamber of telescopic oil cylinder and nothings
Pressure in rod cavity is compared, and only allows the pressure oil in the chamber that wherein pressure is larger to open corresponding check valve stream
Enter oil feeding line I.Wherein, when 1 cylinder barrel of telescopic oil cylinder is retracted, the rod chamber pressure of telescopic oil cylinder 1 is higher and rodless cavity pressure
Smaller, i.e., the rod chamber of telescopic oil cylinder 1 is high pressure chest at this time and rodless cavity is low pressure chamber, then the first check valve 21 is opened, second
Check valve 22 is closed, and the pressure oil (high pressure oil) in 1 rod chamber of telescopic oil cylinder can then be flowed into via the first check valve 21 and supplied
In oil circuit I；And when 1 cylinder barrel of telescopic oil cylinder stretches out, the rodless cavity pressure of telescopic oil cylinder 1 is higher and rod chamber pressure is smaller,
Second reversal valve 22 is opened, and the first check valve 21 is closed, and the pressure oil (high pressure oil) in 1 rodless cavity of telescopic oil cylinder is single via second
Flowed into valve 22 in oil feeding line I.
As it can be seen that the first pressure selection device 2 by setting the embodiment, can always choose the height in telescopic oil cylinder 1
Pressure oil is flowed into oil feeding line I, and since oil feeding line I is connected by reversal valve 4 with cylinder pin oil cylinder 5 and arm pin oil cylinder 6, because
This, the high pressure oil in telescopic oil cylinder 1 finally can be delivered to cylinder pin oil cylinder 5 or arm pin oil cylinder via oil feeding line I and reversal valve 4
6, so that cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can take oil from the high pressure chest of telescopic oil cylinder 1, ensure 5 He of cylinder pin oil cylinder
Arm pin oil cylinder 6 can act under the action of elevated pressures hydraulic oil, further improve Reliability of Microprocessor.
In addition, principle is similarly, based on above-mentioned set-up mode, the 3rd reversal valve 81 and the 4th reversal valve 82 can be to flexible
Pressure in 1 rod chamber of oil cylinder and rodless cavity is compared, and only allows the fluid discharged by cylinder pin oil cylinder 5 or arm pin oil cylinder 6
It is back in the less chamber of wherein pressure, so that cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can be to telescopic oil cylinders 1
Oil return in low pressure chamber, improves oil return smoothness, it is also possible to when ensureing a reset in cylinder pin oil cylinder 5 and arm pin oil cylinder 6
Another is not resetted, and prevents the phenomenon of cylinder arm pin linkage.
By setting first pressure selection device 2 and second pressure selection device 8, when reversal valve 4 is in the first working position
When, the pressure oil in the high pressure chest of telescopic oil cylinder 1 can be delivered in the rod chamber of cylinder pin oil cylinder 5, and make 5 nothing of cylinder pin oil cylinder
Fluid in rod cavity is back in the low pressure chamber of telescopic oil cylinder 1 so that cylinder pin oil cylinder 5 can be extracted more reliably driving cylinder pin；
And principle is similarly, when reversal valve 4 is in three working positions, the pressure oil in the high pressure chest of telescopic oil cylinder 1 can be conveyed
Into the rod chamber of arm pin oil cylinder 6, and the fluid in 6 rodless cavity of arm pin oil cylinder is back in the low pressure chamber of telescopic oil cylinder 1, make
Obtaining arm pin oil cylinder 6 can more reliably extract actuating arm pin.That is, by setting first pressure selection device 2 and second pressure
Selection device 8, can improve the reliability of cylinder pin and arm pin pull action.It is additionally, since special for cylinder without additionally setting
Sell the fueller of 6 fuel feeding of oil cylinder 5 and arm pin oil cylinder or supply cylinder pin oil cylinder 5 and the discharge equipment of 6 oil extraction of arm pin oil cylinder, because
This, structure is also simpler, can effectively reduce the design and processing and manufacturing difficulty of telescopic oil cylinder 1, reduce cost.
As it can be seen that in this embodiment, pass through reversal valve 4, first pressure selection device 2 and second pressure selection device 8
Coordinate, cylinder pin oil cylinder 5 and arm pin oil cylinder 6 not only can more reliably driving cylinder pin and arm pin reinsert, additionally it is possible to more may be used
Extracted by ground driving cylinder pin and arm pin, work efficiency higher, shutdown risk is lower, operational security higher.
In addition, as shown in Figure 1, in this embodiment, telescopic arm hydraulic control system further includes the 5th check valve 9, the 5th
Check valve 9 is arranged on oil extraction oil circuit II and for controlling oil extraction oil circuit II unidirectional along the oil extraction direction of cylinder arm pin driving mechanism
Conducting.Specifically, the oil inlet of the 5th check valve 9 is connected with the second hydraulic fluid port T of reversal valve 4, and the oil outlet of the 5th check valve 9
Connected by second pressure selection device 8 with the low pressure chamber of telescopic oil cylinder 1.More specifically, the oil outlet of the 5th check valve 9 and
Three check valves 81 are connected with the oil inlet of the 4th check valve 82.Since the 5th check valve 9 can prevent occurring in oil extraction oil circuit II
Undesirable fluid flows backwards phenomenon, it is thereby achieved that cylinder pin oil cylinder 5 and arm pin oil cylinder 6 more smoothly oil extraction process, further
Improve the functional reliability of telescopic arm hydraulic control system.
Also, as shown in Figure 1, in this embodiment, telescopic arm hydraulic control system further includes the first accumulator 3, this
One accumulator 3 is connected with oil feeding line I.So when cylinder pin oil cylinder 5 and arm pin oil cylinder 6 need not act, can utilize this first
Accumulator 3 prestores the high pressure oil flowed into by telescopic oil cylinder 1 in oil feeding line I, in case being resupplied when needing to cylinder pin oil cylinder 5
Or in arm pin oil cylinder 6, so as to reduce energy loss, save the energy.Specifically, as shown in Figure 1, the first accumulator 3 and first is single
Oil outlet connection to 21 and second check valve 22 of valve is simultaneously connected with the first hydraulic fluid port P of reversal valve 4 at the same time.So as to work as reversal valve 4
During in the second working position (middle position) and 1 expanding-contracting action of telescopic oil cylinder, the pressure oil in 1 high pressure chest of telescopic oil cylinder is through first pressure
Selection device 2 can be stored after entering oil feeding line I by the collection of the first accumulator 3, once cylinder pin oil cylinder 5 or arm pin oil cylinder
6 need to act, then reversal valve 4 switches to corresponding working position, are released into the high pressure oil that the first accumulator 3 is stored
In cylinder pin oil cylinder 5 or arm pin oil cylinder 6, corresponding action is realized.
In summary, the telescopic arm hydraulic control system of the embodiment, structure is relatively simple, and cost is relatively low, and work can
Higher by property, shutdown risk is relatively low, and the more safe and reliable and efficient course of work can be realized based on it.
It is briefly described as follows the course of work that arm joint stretching is realized based on embodiment telescopic arm hydraulic control system control：
(1) under normal conditions, reversal valve 4 is in middle position.At this time, the cylinder rod of cylinder pin oil cylinder 5 and arm pin oil cylinder 6 is in stretching out shape
State, cylinder pin and arm pin are in insert state.During such case, if arm pin telescopic oil cylinder 1 is flexible, the pressure oil in high pressure chest
Flow into the first accumulator 3, store, in case emergent need.
(2) when certain joint arm section needs to stretch out, reversal valve 4 switches to the 3rd working position (right side by the second working position (middle position)
Position).At this time, the hydraulic oil in 1 high pressure chest of telescopic oil cylinder is flowed via first pressure selection device 2, oil feeding line I and reversal valve 4
In the rod chamber for entering arm pin oil cylinder 6, at the same in 6 rodless cavity of arm pin oil cylinder fluid through the 5th check valve 9, oil extraction oil circuit II and second
Pressure selection device 8 is back in the low pressure chamber of telescopic oil cylinder 1, and the cylinder rod of arm pin oil cylinder 6 is retracted, and band swing arm pin is extracted, and is released
Locking between arm joint to be stretched out and trip disposed thereon and arm joint adjacent thereto.During being somebody's turn to do, cylinder pin still keeps insert state, treats
Stretch out between arm joint and telescopic oil cylinder 1 and keep locking, so that when the cylinder barrel of telescopic oil cylinder 1 stretches out, can drive and treat cantilever arm
Section stretches out.
(3) after stretching out in place, reversal valve 4 switches back to the second working position (middle position) by the 3rd working position (right position).This
When, the rod chamber and rodless cavity of arm pin oil cylinder 6 are connected and connected with oil extraction oil circuit II, arm pin oil cylinder 6 is formed differential cylinder,
Cylinder pin oil cylinder 6 is resetted under the collective effect of 61 elastic force of differential hydraulic power and second spring, and cylinder rod is stretched out again, driving
Arm pin reinserts, will stretch out arm joint in place with and its adjacent arm joint locking.
(4) then, reversal valve 4 switches to the first working position (left position) by the second working position (middle position).At this time, telescopic oil cylinder
Hydraulic oil in 1 high pressure chest has bar via first pressure selection device 2, oil feeding line I and reversal valve 4 inflow cylinder pin oil cylinder 5
In chamber, while fluid flows back through the 5th check valve 9, oil extraction oil circuit II and second pressure selection device 8 in 5 rodless cavity of cylinder pin oil cylinder
Into the low pressure chamber of telescopic oil cylinder 1, the cylinder rod of cylinder pin oil cylinder 5 is retracted, and drives cylinder pin to extract, and releases telescopic oil cylinder 1 with reaching
Locking between the arm joint of position, retracts in order to the cylinder barrel of telescopic oil cylinder 1, drives other arm joints to stretch out.
It should be noted that Fig. 1 illustrate only one embodiment of the utility model, the utility model can also have it
His embodiment.
Wherein, one as embodiment illustrated in fig. 1 improves embodiment, and telescopic arm hydraulic control system can be also further
Including the second accumulator, which is arranged to connect with oil extraction oil circuit II.Since the second accumulator can be when needed
Store the oil return of a part of cylinder pin oil cylinder 5 or arm pin oil cylinder 6, accordingly it is possible to prevent because oil return is not smooth influence cylinder pin oil cylinder 5 and
The action of arm pin oil cylinder 6 resets, it is particularly possible to prevent because 1 low-pressure side oil extraction of telescopic oil cylinder is not smooth and caused by cylinder pin oil cylinder 5 and arm
Pin oil cylinder 6 resets difficulty, so as to be also beneficial to further improve the functional reliability of telescopic arm hydraulic control system.Specifically,
Second accumulator can be with the oil extraction between the oil inlet of the oil outlet of the 5th check valve 9 to second pressure selection device 8
Oil circuit II is connected, i.e. the second accumulator can be arranged at the oil outlet of the 5th check valve 9 and second pressure selection device 8 into
Between hydraulic fluid port.
Certainly, in the other embodiment of the utility model, telescopic arm hydraulic control system can also only include the first storage
One in energy 3 and second accumulator of device, as long as in fact, telescopic arm hydraulic control system includes and oil feeding line I and/or row
Oil circuit II is connected and is used for the energy storage equipment of oil storage accumulation of energy, then can reduce energy loss, and helps to further improve
The functional reliability of telescopic arm hydraulic control system.
And as an alternate embodiment of embodiment illustrated in fig. 1, the structure of first pressure selection device 2 can be different,
It is arranged to include shuttle valve, and two oil inlets of shuttle valve are connected with the rod chamber and rodless cavity of telescopic oil cylinder 1 respectively, and first
The oil outlet of shuttle valve is connected with oil feeding line I.So cylinder pin oil cylinder 5 and arm pin oil cylinder 6 can also always had with telescopic oil cylinder 1
Larger one of rod cavity and pressure in rodless cavity connects.And using the first check valve 21 of series connection and the in embodiment illustrated in fig. 1
Two check valves 22 are existed as first pressure selection device 2 relative to using shuttle valve as first pressure selection device 2, its benefit
In can preferably coordinate with the first accumulator 3, the first accumulator 3 is more reliably played storage high pressure oil in case emergent make
Effect.
, can also be only by cylinder pin oil cylinder 5 and arm pin oil cylinder 6 as another alternate embodiment of embodiment illustrated in fig. 1
One is arranged to connect to form differential cylinder when resetting, so relative to prior art middle cylinder pin oil cylinder 5 and arm pin oil cylinder 6
Situation about only resetting under the action of the spring, can also play the role of certain raising and reset reliability.
Although in addition, fixed in the various embodiments described above with the cylinder rod of telescopic oil cylinder 1 and cylinder pin oil cylinder 5 and arm pin oil cylinder 6
Equal cylinder barrel illustrates exemplified by fixing, it will be understood that telescopic oil cylinder 1 can also cylinder barrel fix, and cylinder pin oil cylinder 5 or arm pin oil
Cylinder 6 may be set to be cylinder rod and fix, these are within the scope of protection of the utility model.
In summary, the telescopic arm hydraulic control system of the utility model, structure is relatively simple, and cost is relatively low, and works
Reliability is higher, and it is relatively low to shut down risk.It is applied in telescopic arm and hoisting machinery, the flexible of telescopic arm can be effectively improved
Smoothness, realizes the more safe and reliable and efficient course of work.Therefore, the utility model additionally provides a kind of telescopic arm and rises
Hoisting machinery.Wherein, telescopic arm includes the telescopic arm hydraulic control system of arm joint, cylinder pin, arm pin and the utility model.And crane
Tool includes the telescopic arm of the utility model.
The foregoing is merely the exemplary embodiment of the utility model, it is not intended to limit the utility model, it is all in this reality
Within new spirit and principle, any modification, equivalent replacement, improvement and so on, should be included in the utility model
Within protection domain.
Claims (15)
1. a kind of telescopic arm hydraulic control system, including telescopic oil cylinder (1) and cylinder arm pin driving mechanism, the cylinder arm pin driving machine
Structure includes cylinder pin oil cylinder (5) and arm pin oil cylinder (6), the cylinder pin oil cylinder (5) be used for by drive the cylinder pin of telescopic arm to plug come
The pars contractilis of the telescopic oil cylinder (1) is controlled to lock or separate with the arm joint of telescopic arm, the arm pin oil cylinder (6) is used to pass through drive
The arm pin of dynamic telescopic arm is plugged to control arm joint locking described in two adjacent sections or separate, so that the telescopic oil cylinder (1) is flexible
Portion can drive the arm joint to stretch when flexible relative to the fixed part of the telescopic oil cylinder (1), and the telescopic arm hydraulic pressure system
System also has the oil feeding line (I) for allowing hydraulic oil to flow to the cylinder arm pin driving mechanism and allows hydraulic oil from the cylinder arm pin
The oil extraction oil circuit (II) of driving mechanism discharge, it is characterised in that
The cylinder pin oil cylinder (5) is double acting single pole oil cylinder, described when the cylinder pin oil cylinder (5) drives the cylinder pin to extract
The rod chamber of cylinder pin oil cylinder (5) is connected with the oil feeding line (I), and when the cylinder pin oil cylinder (5) drives the cylinder pin insertion
When, the rod chamber of the cylinder pin oil cylinder (5) connects to form differential cylinder and connect with the oil extraction oil circuit (II) with rodless cavity；
And/or
The arm pin oil cylinder (6) is double acting single pole oil cylinder, described when the arm pin oil cylinder (6) drives the arm pin to extract
The rod chamber of arm pin oil cylinder (6) is connected with the oil feeding line (I), and when the arm pin oil cylinder (6) drives the arm pin insertion
When, the rod chamber of the arm pin oil cylinder (6) connects to form differential cylinder and connect with the oil extraction oil circuit (II) with rodless cavity.
2. telescopic arm hydraulic control system according to claim 1, it is characterised in that the telescopic arm hydraulic control system
Further include for controlling the cylinder pin oil cylinder (5) and the arm pin oil cylinder (6) and the oil feeding line (I) and the oil extraction oil circuit
(II) oil-way switching apparatus of break-make, the oil-way switching apparatus have first state, the second state and the third state, wherein：
When in the first state, the oil-way switching apparatus controls the rod chamber and the oil feeding line (I) of the cylinder pin oil cylinder (5)
Connect and the rod chamber of the arm pin oil cylinder (6) is connected with the oil extraction oil circuit (II)；When in the second state, the oil circuit
Switching device control the cylinder pin oil cylinder (5) rod chamber and the arm pin oil cylinder (6) rod chamber with the oil extraction oil circuit
(II) connect, also, the rodless cavity of the cylinder pin oil cylinder (5) is connected with rod chamber and/or the rodless cavity of the arm pin oil cylinder (6)
Connected with rod chamber；When in the third state, the oil-way switching apparatus controls rod chamber and the institute of the cylinder pin oil cylinder (5)
The rod chamber for stating oil extraction oil circuit (II) connection and the arm pin oil cylinder (6) is connected with the oil feeding line (I).
3. telescopic arm hydraulic control system according to claim 2, it is characterised in that the cylinder pin oil cylinder (5) without bar
Chamber and/or the rodless cavity of the arm pin oil cylinder (6) are connected with the oil extraction oil circuit (II)；The oil-way switching apparatus includes commutation
Valve (4), the reversal valve (4) includes the first hydraulic fluid port (P), the second hydraulic fluid port (T), the 3rd hydraulic fluid port (A) and the 4th hydraulic fluid port (B), described
First hydraulic fluid port (P) is connected with the oil feeding line (I), and second hydraulic fluid port (T) connects with the oil extraction oil circuit (II), and described
Three hydraulic fluid ports (A) are connected with the rod chamber of the cylinder pin oil cylinder (5), and the 4th hydraulic fluid port (B) has bar with the arm pin oil cylinder (6)
Chamber connects, also, the reversal valve (4) has the first working position, the second working position and the 3rd working position, wherein：Changed when described
When being in the first working position to valve (4), first hydraulic fluid port (P) is connected with the 3rd hydraulic fluid port (A) and second hydraulic fluid port (T)
Connected with the 4th hydraulic fluid port (B) so that the oil-way switching apparatus is in first state；When the reversal valve (4) is in the
During two working positions, the first hydraulic fluid port (P) cut-off and second hydraulic fluid port (T) and the 3rd hydraulic fluid port (A) and the 4th oil
Mouth (B) connects so that the oil-way switching apparatus is in the second state；When the reversal valve (4) is in three working positions,
First hydraulic fluid port (P) is connected with the 4th hydraulic fluid port (B) and second hydraulic fluid port (T) is connected with the 3rd hydraulic fluid port (A), makes
Obtain the oil-way switching apparatus and be in the third state.
4. telescopic arm hydraulic control system according to claim 1, it is characterised in that the cylinder pin oil cylinder (5) has the
One spring (51), first spring (51) are used for the active force that application makes the cylinder pin oil cylinder (5) drive the cylinder pin insertion；
And/or the arm pin oil cylinder (6) has second spring (61), the second spring (61), which is used for application, makes the arm pin oil cylinder
(6) active force of the arm pin insertion is driven.
5. according to any telescopic arm hydraulic control systems of claim 1-4, it is characterised in that the oil feeding line (I)
Connected with one in the rod chamber and rodless cavity of the telescopic oil cylinder (1).
6. telescopic arm hydraulic control system according to claim 5, it is characterised in that the oil feeding line (I) with it is described
Larger one of the rod chamber of telescopic oil cylinder (1) and pressure in rodless cavity connects.
7. telescopic arm hydraulic control system according to claim 6, it is characterised in that the telescopic arm hydraulic control system
First pressure selection device (2) is further included, the first pressure selection device (2) is used to control the oil feeding line (I) and institute
Larger one of the rod chamber of telescopic oil cylinder (1) and pressure in rodless cavity is stated to connect.
8. telescopic arm hydraulic control system according to claim 7, it is characterised in that the first pressure selection device
(2) the first check valve (21) and the second check valve (22), oil inlet and the flexible oil of first check valve (21) are included
The rod chamber connection of cylinder (1), the oil inlet of second check valve (22) are connected with the rodless cavity of the telescopic oil cylinder (1), institute
The oil outlet of the oil outlet and second check valve (22) of stating the first check valve (21) is connected with the oil feeding line (I)；
Alternatively, the first pressure selection device (2) includes shuttle valve, two oil inlets of the shuttle valve respectively with the telescopic oil cylinder
(1) rod chamber is connected with rodless cavity, and the oil outlet of the shuttle valve is connected with the oil feeding line (I).
9. telescopic arm hydraulic control system according to claim 6, it is characterised in that the oil extraction oil circuit (II) with it is described
One less with pressure in rodless cavity of the rod chamber of telescopic oil cylinder (1) connects.
10. telescopic arm hydraulic control system according to claim 9, it is characterised in that the telescopic arm hydraulic control system
System further includes second pressure selection device (8), the second pressure selection device (8) be used to controlling the oil extraction oil circuit (II) with
One less with pressure in rodless cavity of the rod chamber of the telescopic oil cylinder (1) connects.
11. telescopic arm hydraulic control system according to claim 10, it is characterised in that the second pressure selection device
(8) the 3rd check valve (81) and the 4th check valve (82), oil outlet and the flexible oil of the 3rd check valve (81) are included
The rod chamber connection of cylinder (1), the oil outlet of the 4th check valve (82) are connected with the rodless cavity of the telescopic oil cylinder (1), institute
State the oil inlet of the 3rd check valve (81) and the oil inlet of the 4th check valve (82) is connected with the oil extraction oil circuit (II).
12. according to any telescopic arm hydraulic control systems of claim 1-4, it is characterised in that the telescopic arm hydraulic pressure
Control system further includes energy storage equipment, and the energy storage equipment is connected with the oil feeding line (I) and/or oil extraction oil circuit (II), uses
In oil storage accumulation of energy.
13. according to any telescopic arm hydraulic control systems of claim 1-4, it is characterised in that the telescopic arm hydraulic pressure
Control system further includes the 5th check valve (9), and the 5th check valve (9) is arranged on the oil extraction oil circuit (II) and for controlling
Make oil extraction direction one-way conduction of the oil extraction oil circuit (II) along the cylinder arm pin driving mechanism.
14. a kind of telescopic arm, including arm joint, cylinder pin and arm pin, it is characterised in that the telescopic arm is further included such as claim 1-
Telescopic arm hydraulic control system described in 13.
15. a kind of hoisting machinery, it is characterised in that including telescopic arm as claimed in claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721044665.8U CN207243309U (en) | 2017-08-21 | 2017-08-21 | Telescopic arm hydraulic control system, telescopic arm and hoisting machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108561353A (en) * | 2018-07-13 | 2018-09-21 | 南通润邦重机有限公司 | A kind of bolt circuit of ocean engineering platform hoist system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108561353A (en) * | 2018-07-13 | 2018-09-21 | 南通润邦重机有限公司 | A kind of bolt circuit of ocean engineering platform hoist system |
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