CN202451485U - Hydraulic synchronization independent control device, synchronous hydraulic system and crane - Google Patents

Hydraulic synchronization independent control device, synchronous hydraulic system and crane Download PDF

Info

Publication number
CN202451485U
CN202451485U CN2012200622824U CN201220062282U CN202451485U CN 202451485 U CN202451485 U CN 202451485U CN 2012200622824 U CN2012200622824 U CN 2012200622824U CN 201220062282 U CN201220062282 U CN 201220062282U CN 202451485 U CN202451485 U CN 202451485U
Authority
CN
China
Prior art keywords
oil outlet
communicated
hydraulic
filler opening
valve
Prior art date
Application number
CN2012200622824U
Other languages
Chinese (zh)
Inventor
王守伟
冯文昌
胡小冬
赵磊
Original Assignee
徐州重型机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 徐州重型机械有限公司 filed Critical 徐州重型机械有限公司
Priority to CN2012200622824U priority Critical patent/CN202451485U/en
Application granted granted Critical
Publication of CN202451485U publication Critical patent/CN202451485U/en

Links

Abstract

The utility model discloses a hydraulic synchronization independent control device which comprises a first oil inlet, a second oil inlet, a first oil outlet, a second oil outlet, an oil discharge port, a first hydraulic control check valve, a second hydraulic control check valve, a first reversing valve, a second reversing valve, a first check valve and a second check valve, wherein the first oil inlet is communicated with the first oil outlet; and the second oil inlet is communicated with the second oil outlet. The device can independently control the first oil outlet and the second oil outlet through the first reversing valve and the second reversing valve, so that the synchronization error can be manually eliminated; and furthermore, the phenomena of pressure reduction and overflow of a system can be avoided, and the hydraulic synchronization independent control device is applicable to other synchronization elements besides a flow division and collection valve. The utility model also discloses a synchronous hydraulic system with the control device and a crane.

Description

A kind of Hydraulic Synchronizing independence control gear, synchronization hydraulic system and hoist

Technical field

The utility model relates to technical field of hydraulic, particularly the Hydraulic Synchronizing independence control gear of hoist.The utility model also relates to synchronization hydraulic system and the hoist that is provided with said control gear.

Background technique

On the modern Hoisting Machinery, because design demand, its hydraulic system can use the twin-tub structure that power is provided.But twin-tub in use, if the load force of bearing differs in size, will occur hoisting or falling nonsynchronous phenomenon.

For example hoister in large tonnage is along with the continuous increase of initial weight; Counterweight weight of being hung and quantity are also soaring constantly, can be raised in order to guarantee counterweight, and can promote reposefully; Counterweight oil cylinder quantity set on hoister in large tonnage is two, and symmetry is installed.

The use of two counterweight oil cylinders has promoted the performance that articulates of counterweight, but also has the problem of a fasibility.Because counterweight forms by the little combinations of weights of polylith, carrying out counterweight when articulating, the center of gravity of counterweight can not be in desirable central position, and then counterweight can produce offset loading force to the counterweight oil cylinder, and promptly twin-tub can not on average bear load force.Because the existence of offset loading force, twin-tub is the stressed deviation that just has when operation, and the flow that can cause getting into each oil cylinder active chamber thus is inconsistent, thereby the synchronization error of oil cylinder occurs.

The existence of synchronization error is very abominable to the influence of oil cylinder during the twin-tub motion;, synchronization error will cause cylinder barrel and piston rod bending deflection to occur when surpassing allowed band; The lighter damages the counterweight oil cylinder; Heavy then can cause serious security incident, just seem extremely important so solve the asynchronous problem of twin-tub.

Existing crane lifting synchronism mainly is to rely on flow divider-combiner; It is the shunting precision that the synchronism error of counterweight oil cylinder depends primarily on flow divider-combiner; In case flow divider-combiner is selected; Then consequent synchronization error will be difficult to be eliminated, and this promotes to twin-tub and has brought great difficulty, and the counterweight that this counterweight can only be used for less tonnage articulates.

Please refer to Fig. 1, Fig. 1 is the hydraulic schematic diagram of the existing employed twin-tub counterweight of hoist hydraulic system.

As shown in the figure, in order to eliminate the twin-tub synchronization error, be provided with in this system circuit first solenoid valve 11 ' with second solenoid valve 12 '; When one of them solenoid valve gets when electric; Then this loop will be blocked, and another oil circuit is still conducting then, thereby has realized that single cylinder independently controls.

Though this technological scheme can realize manually eliminating synchronization error, when controlling separately, the oil inlet quantity of another oil circuit is very little, system's overflow that can build the pressure, thus reduced system effectiveness, cause system's heating.

In addition, this technological scheme can not be common to other synchronous element, for example just can not be used behind the flow divider-combiner 10 ' be replaced by syncmotor, has limited using scope.

Therefore, how when realizing that twin-tub is independently controlled, avoiding system's overflow that builds the pressure, and can be applicable to other synchronous element, is the present technical issues that need to address of those skilled in the art.

The model utility content

First purpose of the utility model provides a kind of Hydraulic Synchronizing independence control gear.This device can be avoided system's overflow that builds the pressure, and can be applicable to other synchronous element except that flow divider-combiner when realizing that twin-tub is independently controlled.

Second purpose of the utility model provides a kind of synchronization hydraulic system that is provided with said control gear.

The 3rd purpose of the utility model provides a kind of hoist that is provided with said control gear.

In order to realize above-mentioned first purpose, the utility model provides a kind of Hydraulic Synchronizing independence control gear, and this device has first filler opening, second filler opening, first oil outlet, second oil outlet and drain tap;

Be provided with first Pilot operated check valve, second Pilot operated check valve, first selector valve, second selector valve, first one-way valve and second one-way valve;

Said first filler opening is communicated with said first oil outlet, and said second filler opening is communicated with said second oil outlet;

The filler opening of said first Pilot operated check valve is communicated with said drain tap, oil outlet is communicated with said first filler opening; Its guide's hydraulic fluid port selectively is communicated with the oil outlet or the said drain tap of said second one-way valve through said first selector valve, and the filler opening of said second one-way valve is communicated with said second oil outlet;

The filler opening of said second Pilot operated check valve is communicated with said drain tap, oil outlet is communicated with said second filler opening; Its guide's hydraulic fluid port selectively is communicated with the oil outlet or the said drain tap of said first one-way valve through said second selector valve, and the filler opening of said first one-way valve is communicated with said first oil outlet.

Preferably; Said first selector valve and second selector valve all have first hydraulic fluid port, second hydraulic fluid port and the 3rd hydraulic fluid port, and have two working positions: in first working position, its first hydraulic fluid port is communicated with second hydraulic fluid port; In second working position, its second hydraulic fluid port is communicated with the 3rd hydraulic fluid port;

First hydraulic fluid port of said first selector valve, second hydraulic fluid port and the 3rd hydraulic fluid port are communicated with the oil outlet of second one-way valve, the guide's hydraulic fluid port and the drain tap of first Pilot operated check valve respectively;

First hydraulic fluid port of said second selector valve, second hydraulic fluid port and the 3rd hydraulic fluid port are communicated with the oil outlet of first one-way valve, the guide's hydraulic fluid port and the drain tap of second Pilot operated check valve respectively.

Preferably, said first selector valve and second selector valve are the two-position three way solenoid directional control valve.

Preferably, further comprise relief valve, the filler opening of said relief valve is communicated with the oil outlet of said first one-way valve and second one-way valve, oil outlet is communicated with said drain tap.

For realizing above-mentioned second purpose; The utility model provides a kind of synchronization hydraulic system; Comprise first executive component, second executive component and synchronous element; Further comprise above-mentioned each described Hydraulic Synchronizing independence control gear; First oil outlet of said synchronous element and second oil outlet are communicated with first filler opening and second filler opening of said Hydraulic Synchronizing independence control gear respectively, and first oil outlet of said Hydraulic Synchronizing independence control gear and second oil outlet are communicated with the filler opening of said first executive component and second executive component respectively.

Preferably, said synchronous element is a flow divider-combiner.

Preferably, said first executive component and second executive component are hydraulic jack.

Preferably, said synchronous element is a syncmotor.

For realizing above-mentioned the 3rd purpose; The utility model provides a kind of hoist; Comprise hoist body and twin-tub synchronization hydraulic system; Said twin-tub synchronization hydraulic system comprises first oil cylinder, second oil cylinder and flow divider-combiner; Further comprise above-mentioned each described Hydraulic Synchronizing independence control gear, first oil outlet of said flow divider-combiner and second oil outlet are communicated with first filler opening and second filler opening of said Hydraulic Synchronizing independence control gear respectively, and first oil outlet of said Hydraulic Synchronizing independence control gear and second oil outlet are communicated with the filler opening of said first oil cylinder and second oil cylinder respectively.

Preferably, said first oil cylinder and second oil cylinder are two counterweight oil cylinders of hoist.

The Hydraulic Synchronizing independence control gear that the utility model provided is provided with elements such as first Pilot operated check valve, second Pilot operated check valve, first selector valve, second selector valve, first one-way valve and second one-way valve; Through first selector valve and second selector valve; Can carry out independent control to first oil outlet and second oil outlet when needed, thereby manually eliminate synchronization error.Because when independent control, its first filler opening or second filler opening can be communicated with drain tap, therefore can avoid system's overflow that builds the pressure.

In addition, the filler opening of its first Pilot operated check valve and second Pilot operated check valve directly is communicated with fuel tank through drain tap, when synchronization hydraulic system occurs inhaling sky, can carry out repairing well, makes system works more stable.

This control gear is easy and simple to handle, be easy to realize, can save installing space, and cost performance is higher.

In a kind of embodiment, further comprise relief valve, the filler opening of said relief valve is communicated with the oil outlet of said first one-way valve and second one-way valve, oil outlet is communicated with said drain tap.Through relief valve is set, when system pressure raises, can avoid system to build the pressure sealing, component life are produced harmful effect, thereby guarantees security of system.And make this control gear not only go for the synchro system of flow divider-combiner control, but also can be used for the synchro system of syncmotor control, make it have versatility more widely.

Synchronization hydraulic system that the utility model provided and hoist are provided with above-mentioned Hydraulic Synchronizing independence control gear; Because above-mentioned Hydraulic Synchronizing independence control gear has above-mentioned technique effect, the synchronization hydraulic system and the hoist that are provided with this Hydraulic Synchronizing independence control gear also should possess the corresponding techniques effect.

Description of drawings

Fig. 1 is the hydraulic schematic diagram of the existing employed twin-tub counterweight of hoist hydraulic system;

Fig. 2 provides the hydraulic schematic diagram of a kind of embodiment of Hydraulic Synchronizing independence control gear for the utility model;

Fig. 3 is applied to the hydraulic schematic diagram of the two counterweight oil cylinder hydraulic systems of hoist for Hydraulic Synchronizing independence control gear shown in Figure 2.

Among Fig. 1:

10 '. flow divider-combiner 11 '. first solenoid valve 12 '. second solenoid valve

Among Fig. 2, Fig. 3:

1. first Pilot operated check valve, 2. second Pilot operated check valves, 3. first selector valves, 4. second selector valves, 5. first one-way valves, 6. second one-way valves, 7. relief valves

11. the synchronous independent control valve 13. Equilibrators 14. left counterweight oil cylinder 15. right counterweight oil cylinders of flow divider-combiner 12. twin-tubs

Embodiment

The core of the utility model provides a kind of Hydraulic Synchronizing independence control gear.This device not only can realize that twin-tub independently controls, and can avoid system's overflow that builds the pressure, and can be applicable to other synchronous element.

Another core of the utility model provides a kind of synchronization hydraulic system and hoist that is provided with said control gear.

In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with accompanying drawing and embodiment.

Please refer to Fig. 2, Fig. 2 provides the hydraulic schematic diagram of a kind of embodiment of Hydraulic Synchronizing independence control gear for the utility model.

In first kind of embodiment; The valve body of the Hydraulic Synchronizing independence control valve that the utility model provides has the first filler opening A1, the second filler opening A2, the first oil outlet B1, the second oil outlet B2 and drain tap T, and is integrated with first Pilot operated check valve 1, second Pilot operated check valve 2, first selector valve 3, second selector valve 4, first one-way valve 5 and second one-way valve 6.

First selector valve 3 and second selector valve 4 are the two-position three way solenoid directional control valve; Have first hydraulic fluid port, second hydraulic fluid port and the 3rd hydraulic fluid port, and have two working positions: in first working position, its first hydraulic fluid port is communicated with second hydraulic fluid port; The 3rd hydraulic fluid port ends; In second working position, its second hydraulic fluid port is communicated with the 3rd hydraulic fluid port, and first hydraulic fluid port ends.

First hydraulic fluid port of first selector valve 3, second hydraulic fluid port and the 3rd hydraulic fluid port are communicated with the oil outlet of second one-way valve 6, the guide's hydraulic fluid port and the drain tap T of first Pilot operated check valve 1 respectively, and the filler opening of second one-way valve 6 is communicated with the second oil outlet B2.

First hydraulic fluid port of second selector valve 4, second hydraulic fluid port and the 3rd hydraulic fluid port are communicated with the oil outlet of first one-way valve 5, the guide's hydraulic fluid port and the drain tap T of second Pilot operated check valve 2 respectively, and the filler opening of first one-way valve 5 is communicated with the first oil outlet B1.

The first filler opening A1 is communicated with the first oil outlet B1; The second filler opening A2 is communicated with the second oil outlet B2; The filler opening of first Pilot operated check valve 1 is communicated with drain tap T, oil outlet is communicated with the first filler opening A1, and the filler opening of second Pilot operated check valve 2 is communicated with drain tap T, oil outlet is communicated with the second filler opening A2.

When first selector valve 3 is in first working position; And when second selector valve 4 was in second working position, first Pilot operated check valve 1 was opened, and the first filler opening A1 is communicated with drain tap T; No longer to the first oil outlet B1 normal fuel injection, and the second filler opening A2 is still to the second oil outlet B2 fuel feeding.

When first selector valve 3 is in second working position; And when second selector valve 4 was in first working position, second Pilot operated check valve 2 was opened, and the second filler opening A2 is communicated with drain tap T; No longer to the second oil outlet B2 normal fuel injection, and the first filler opening A1 is still to the first oil outlet B1 fuel feeding.

That is to say,, can carry out independent control to the first oil outlet B1 and the second oil outlet B2 when needed, thereby manually eliminate synchronization error through first selector valve 3 and second selector valve 4.Because when independent control, its first filler opening A1 or the second filler opening A2 are communicated with drain tap T, so can avoid system's overflow that builds the pressure.

In addition, the filler opening of its first Pilot operated check valve 1 and second Pilot operated check valve 2 directly is communicated with fuel tank through drain tap T, when synchronization hydraulic system occurs inhaling sky, can carry out repairing well, makes system works more stable

For improving the Security of system, can further set up relief valve 7, the filler opening of relief valve 7 is communicated with the oil outlet of first one-way valve 5 and second one-way valve 6, oil outlet is communicated with drain tap T.

Through relief valve 7 is set, when system pressure raises, can avoid system to build the pressure sealing, component life are produced harmful effect, thereby guarantees security of system.And make this control gear not only go for the synchro system of flow divider-combiner control, but also can be used for the synchro system of syncmotor control, make it have versatility more widely.

Please refer to Fig. 3, Fig. 3 is applied to the hydraulic schematic diagram of the two counterweight oil cylinder hydraulic systems of hoist for Hydraulic Synchronizing independence control gear shown in Figure 2.

The utility model also provides a kind of synchronization hydraulic system; Be specially the two counterweight oil cylinder hydraulic system of super-tonnage hoist; Comprise left counterweight oil cylinder 14, right counterweight oil cylinder 15 and flow divider-combiner 11, on the oil circuit of flow divider-combiner 11 and counterweight oil cylinder, be provided with the synchronous independent control valve 12 of twin-tub mentioned above.

First oil outlet of flow divider-combiner 11 and second oil outlet are communicated with the first filler opening A1 and the second filler opening A2 of the synchronous independent control valve 12 of twin-tub respectively; The first oil outlet B1 of the synchronous independent control valve 12 of twin-tub and the second oil outlet B2 are communicated with the filler opening of left counterweight oil cylinder 14 and right counterweight oil cylinder 15 respectively, and drain tap T is communicated with fuel tank.

During work, cooperate the electrical control logic can accomplish the synchronous and independent control of two counterweight oil cylinders, the groundwork principle is following:

One, the synchronous operating mode of twin-tub:

When twin-tub is carried out simultaneously operating; The synchronous independent control valve 12 of twin-tub in the oil circuit is not participated in control; Hydraulic oil directly flows out from the first oil outlet B1 and the second oil outlet B2 after the first filler opening A1 and the entering of the second filler opening A2 mouth, and the The whole control valve only plays the conducting effect.

Two, left counterweight oil cylinder independently rises operating mode:

When left counterweight oil cylinder 14 is carried out independence control, need to guarantee that right counterweight oil cylinder 15 keeps motionless, then need to control through the synchronous independent control valve 12 of twin-tub.

After hydraulic oil gets into flow divider-combiner 11, can be divided into the first filler opening A1 and the second filler opening A2 that two-way gets into the synchronous independent control valve 12 of twin-tub respectively, thereby get into left and right counterweight oil cylinder respectively.When needs keep right counterweight oil cylinder 15 motionless, second selector valve 4 in the synchronous independent control valve 12 of twin-tub electric, then hydraulic oil can get into the filler opening place of second selector valve 4 through first one-way valve 5; Through arriving guide's oil pocket of second Pilot operated check valve 2 behind this valve; And push second Pilot operated check valve 2 open, and the hydraulic oil that then gets into the second filler opening A2 will directly get into fuel tank through second Pilot operated check valve 2, and the rodless cavity of right counterweight oil cylinder 15 will no longer include high pressure oil and get into; So will keep motionless; And the hydraulic oil of the first filler opening A1 can get into the rodless cavity of left counterweight oil cylinder 14 smoothly, promotes cylinder tube and rises, thereby accomplish error compensation.

Three, right counterweight oil cylinder independently rises operating mode:

When right counterweight oil cylinder 15 is carried out independence control, need to guarantee that left counterweight oil cylinder 14 keeps motionless, then need to control through the synchronous independent control valve 12 of twin-tub.

After hydraulic oil gets into flow divider-combiner 11, can be divided into the first filler opening A1 and the second filler opening A2 that two-way gets into the synchronous independent control valve 12 of twin-tub respectively, thereby get into left and right counterweight oil cylinder respectively.When needs keep left counterweight oil cylinder 14 motionless, first selector valve 3 in the synchronous independent control valve 12 of twin-tub electric, then hydraulic oil can get into the filler opening place of first selector valve 3 through second one-way valve 6; Through arriving guide's oil pocket of first Pilot operated check valve 1 behind this valve; And push first Pilot operated check valve 1 open, and the hydraulic oil that then gets into the first filler opening A1 will directly get into fuel tank through first Pilot operated check valve 1, and the rodless cavity of left counterweight oil cylinder 14 will no longer include high pressure oil and get into; So will keep motionless; And the hydraulic oil of the second filler opening A2 can get into the rodless cavity of right counterweight oil cylinder 15 smoothly, promotes cylinder tube and rises, thereby accomplish error compensation.

Relief valve 7 in the synchronous independent control valve 12 of twin-tub shields in system, when oil cylinder when stretching entirely, because the existence of synchronization error; And the operator is difficult for finding the synchronization error of twin-tub and continuing to use synchronous lifting, and then motionless after an oil cylinder reaches whole process, another oil cylinder then need continue to stretch out; Characteristic according to flow divider-combiner 11; The rodless cavity that can know the oil cylinder that extends the dead point will build the pressure, and when system pressure raises, will produce harmful effect to system sealing property, component life; Relief valve 7 just can be eliminated these drawbacks at this, and makes this valve can apply to the synchro system of syncmotor control.

The synchronous independent control valve of above-mentioned twin-tub only is a kind of preferred version that the utility model provides Hydraulic Synchronizing independence control gear; Specifically be not limited thereto; Can make pointed adjustment according to actual needs on this basis, thereby obtain different embodiment.Because mode in the cards is more, just illustrate no longer one by one here.

Except synchronous independent control valve of above-mentioned twin-tub and synchronization hydraulic system; The utility model also provides a kind of hoist; Comprise hoist body and twin-tub synchronization hydraulic system; Said twin-tub synchronization hydraulic system comprises first oil cylinder, second oil cylinder and flow divider-combiner; Further comprise the synchronous independent control valve of twin-tub mentioned above, first oil outlet of said flow divider-combiner and second oil outlet are communicated with first filler opening and second filler opening of the synchronous independent control valve of said twin-tub respectively, and first oil outlet of the synchronous independent control valve of said twin-tub and second oil outlet are communicated with the filler opening of said first oil cylinder and second oil cylinder respectively; All the other structures please refer to existing technology, and this paper repeats no more.

Particularly, said first oil cylinder and second oil cylinder are two counterweight oil cylinders of hoist.

More than Hydraulic Synchronizing independence control gear, synchronization hydraulic system and hoist that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the mode of execution of the utility model are set forth, above embodiment's explanation just is used to help to understand the core concept of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims (10)

1. a Hydraulic Synchronizing independence control gear is characterized in that, this device has first filler opening, second filler opening, first oil outlet, second oil outlet and drain tap;
Be provided with first Pilot operated check valve, second Pilot operated check valve, first selector valve, second selector valve, first one-way valve and second one-way valve;
Said first filler opening is communicated with said first oil outlet, and said second filler opening is communicated with said second oil outlet;
The filler opening of said first Pilot operated check valve is communicated with said drain tap, oil outlet is communicated with said first filler opening; Its guide's hydraulic fluid port selectively is communicated with the oil outlet or the said drain tap of said second one-way valve through said first selector valve, and the filler opening of said second one-way valve is communicated with said second oil outlet;
The filler opening of said second Pilot operated check valve is communicated with said drain tap, oil outlet is communicated with said second filler opening; Its guide's hydraulic fluid port selectively is communicated with the oil outlet or the said drain tap of said first one-way valve through said second selector valve, and the filler opening of said first one-way valve is communicated with said first oil outlet.
2. Hydraulic Synchronizing independence control gear according to claim 1; It is characterized in that; Said first selector valve and second selector valve all have first hydraulic fluid port, second hydraulic fluid port and the 3rd hydraulic fluid port, and have two working positions: in first working position, its first hydraulic fluid port is communicated with second hydraulic fluid port; In second working position, its second hydraulic fluid port is communicated with the 3rd hydraulic fluid port;
First hydraulic fluid port of said first selector valve, second hydraulic fluid port and the 3rd hydraulic fluid port are communicated with the oil outlet of second one-way valve, the guide's hydraulic fluid port and the drain tap of first Pilot operated check valve respectively;
First hydraulic fluid port of said second selector valve, second hydraulic fluid port and the 3rd hydraulic fluid port are communicated with the oil outlet of first one-way valve, the guide's hydraulic fluid port and the drain tap of second Pilot operated check valve respectively.
3. Hydraulic Synchronizing independence control gear according to claim 2 is characterized in that said first selector valve and second selector valve are the two-position three way solenoid directional control valve.
4. according to each described Hydraulic Synchronizing independence control gear of claim 1 to 3; It is characterized in that; Further comprise relief valve, the filler opening of said relief valve is communicated with the oil outlet of said first one-way valve and second one-way valve, oil outlet is communicated with said drain tap.
5. synchronization hydraulic system; Comprise first executive component, second executive component and synchronous element; It is characterized in that; Further comprise aforesaid right requirement 1 to 4 each described Hydraulic Synchronizing independence control gear; First oil outlet of said synchronous element and second oil outlet are communicated with first filler opening and second filler opening of said Hydraulic Synchronizing independence control gear respectively, and first oil outlet of said Hydraulic Synchronizing independence control gear and second oil outlet are communicated with the filler opening of said first executive component and second executive component respectively.
6. synchronization hydraulic system according to claim 5 is characterized in that, said synchronous element is a flow divider-combiner.
7. synchronization hydraulic system according to claim 6 is characterized in that, said first executive component and second executive component are hydraulic jack.
8. synchronization hydraulic system according to claim 5 is characterized in that, said synchronous element is a syncmotor.
9. hoist; Comprise hoist body and twin-tub synchronization hydraulic system; Said twin-tub synchronization hydraulic system comprises first oil cylinder, second oil cylinder and flow divider-combiner; It is characterized in that; Further comprise aforesaid right requirement 1 to 4 each described Hydraulic Synchronizing independence control gear, first oil outlet of said flow divider-combiner and second oil outlet are communicated with first filler opening and second filler opening of said Hydraulic Synchronizing independence control gear respectively, and first oil outlet of said Hydraulic Synchronizing independence control gear and second oil outlet are communicated with the filler opening of said first oil cylinder and second oil cylinder respectively.
10. hoist according to claim 9 is characterized in that, said first oil cylinder and second oil cylinder are two counterweight oil cylinders of hoist.
CN2012200622824U 2012-02-23 2012-02-23 Hydraulic synchronization independent control device, synchronous hydraulic system and crane CN202451485U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200622824U CN202451485U (en) 2012-02-23 2012-02-23 Hydraulic synchronization independent control device, synchronous hydraulic system and crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200622824U CN202451485U (en) 2012-02-23 2012-02-23 Hydraulic synchronization independent control device, synchronous hydraulic system and crane

Publications (1)

Publication Number Publication Date
CN202451485U true CN202451485U (en) 2012-09-26

Family

ID=46867351

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200622824U CN202451485U (en) 2012-02-23 2012-02-23 Hydraulic synchronization independent control device, synchronous hydraulic system and crane

Country Status (1)

Country Link
CN (1) CN202451485U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536934A (en) * 2012-02-28 2012-07-04 徐州重型机械有限公司 Dual-cylinder synchronous control hydraulic system and crane
CN102588364A (en) * 2012-02-23 2012-07-18 徐州重型机械有限公司 Hydraulic synchronous independent control device, synchronous hydraulic system and crane
CN102979772A (en) * 2012-12-10 2013-03-20 徐州重型机械有限公司 Oil cylinder locking device, double-cylinder hydraulic control system and lifting equipment
CN103434961A (en) * 2013-08-21 2013-12-11 上海中联重科桩工机械有限公司 Double winding control system and engineering machine
CN104150395A (en) * 2014-07-31 2014-11-19 麦特汽车服务股份有限公司 Lifting system and control method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588364A (en) * 2012-02-23 2012-07-18 徐州重型机械有限公司 Hydraulic synchronous independent control device, synchronous hydraulic system and crane
CN102536934A (en) * 2012-02-28 2012-07-04 徐州重型机械有限公司 Dual-cylinder synchronous control hydraulic system and crane
CN102979772A (en) * 2012-12-10 2013-03-20 徐州重型机械有限公司 Oil cylinder locking device, double-cylinder hydraulic control system and lifting equipment
CN102979772B (en) * 2012-12-10 2015-11-25 徐州重型机械有限公司 Oil cylinder locking device, twin-tub hydraulic control system and crane gear
CN103434961A (en) * 2013-08-21 2013-12-11 上海中联重科桩工机械有限公司 Double winding control system and engineering machine
CN103434961B (en) * 2013-08-21 2015-09-30 上海中联重科桩工机械有限公司 double-winch control system and engineering machinery
CN104150395A (en) * 2014-07-31 2014-11-19 麦特汽车服务股份有限公司 Lifting system and control method thereof

Similar Documents

Publication Publication Date Title
CN102241371B (en) Hydraulic system applied to multi-spud leg lifting mechanism
CN202251199U (en) Electro-hydraulic proportional combined maneuvering valve
CN103047208B (en) Load-sensitive electro-hydraulic proportional multi-way valve
CN202118019U (en) Hydraulic control component and control loop applying same
CN103801751B (en) Based on the fully-automatic plate shearing machine hydraulic system that PLC controls
CN203247047U (en) Hydraulic two-column lifting machine
CN100482953C (en) Giant-scale hydraulic press synchronous balancing hydraulic circuit
CN203461740U (en) Double-cylinder synchronous luffing system of crane
CN102173363B (en) Jacking structure of tower crane and hydraulic system and jacking method thereof
CN102619794B (en) Single-cylinder bolt expansion and contraction control system and construction machine
CN101532518B (en) Concrete pump truck pumping double-main oil cylinder automatic high-low pressure switching and equidirectional telescoping hydraulic device
CN201442827U (en) Ultra-thin hydraulic lifter hydraulic system
CN103244496B (en) Rotary control valve group, revolution hydraulic control system and hoist
CN102874704B (en) Hydraulic system, hoisting mechanism and engineering machinery
CN102502433B (en) Variable amplitude hydraulic system of dual-oil-cylinder variable amplitude crane
CN105545853B (en) Extension and contraction control valve, multi-stage expansion hydraulic system and arm of derrick stretch hydraulic control system
CN103671335B (en) Load-sensitive electric proportional multi-loop valve
CN104948538B (en) The servo hydraulic system and its construction method of a kind of plate bending machine
CN102996553B (en) Support leg hydraulic system and engineering machinery
CN103569882B (en) Hydraulic lifting system of attached tower crane
CN203604293U (en) Engineering mechanical equipment and hydraulic control circuit thereof
CN104196803B (en) A kind of multi-functional screw-in cartridge valve for heavy tractor electricity liquid lifter
CN102874697A (en) Hydraulic system for controlling amplitude variation of arm support and crane
CN102345749A (en) Flow collecting valve and crane hydraulic control system with the same
CN202833008U (en) Concrete pump and hydraulic system thereof

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
RGAV Abandon patent right to avoid regrant
AV01 Patent right actively abandoned

Granted publication date: 20120926

Effective date of abandoning: 20140625