CN201220896Y - Two-stage telescoping built-in oil conduit supporting leg - Google Patents

Two-stage telescoping built-in oil conduit supporting leg Download PDF

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Publication number
CN201220896Y
CN201220896Y CNU2008200696357U CN200820069635U CN201220896Y CN 201220896 Y CN201220896 Y CN 201220896Y CN U2008200696357 U CNU2008200696357 U CN U2008200696357U CN 200820069635 U CN200820069635 U CN 200820069635U CN 201220896 Y CN201220896 Y CN 201220896Y
Authority
CN
China
Prior art keywords
leg
cylinder
telescopic
vertical
support leg
Prior art date
Application number
CNU2008200696357U
Other languages
Chinese (zh)
Inventor
陈维
程磊
陈志伟
吴威
周守艳
许劲松
陈宝凤
厉万里
Original Assignee
徐州徐工随车起重机有限公司
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 徐州徐工随车起重机有限公司 filed Critical 徐州徐工随车起重机有限公司
Priority to CNU2008200696357U priority Critical patent/CN201220896Y/en
Application granted granted Critical
Publication of CN201220896Y publication Critical patent/CN201220896Y/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/78Supports, e.g. outriggers, for mobile cranes
    • B66C23/80Supports, e.g. outriggers, for mobile cranes hydraulically actuated

Abstract

A double-stage telescopic built-in support leg for an oil pipe belongs to a double-stage telescopic built-in support leg for an oil pipe. The first telescopic leg of the support leg is inserted into a machine base; the end part of the machine base is connected with a first telescopic locking assembly; a first horizontal cylinder is connected inside the first telescopic leg; the end part of the first telescopic leg is connected with a second telescopic locking assembly; the second telescopic leg is inserted into the first telescopic leg, and the end part thereof is connected with a vertical support leg; a vertical hydraulic support leg cylinder is connected inside the vertical support leg; and the first horizontal cylinder, the second horizontal cylinder and the vertical hydraulic support leg cylinder are connected with a hydraulic controller. The support leg has the advantages of simple structure and indefectible control pipeline, and can satisfy the work of adjusting different spans of a large-tonnage and large-arm crane under the different operating conditions, thereby improving the stability on different corresponding chassises, and ensuring convenient and fast operation and high efficiency.

Description

The twin-stage built-in oil pipe supporting leg that stretches
Technical field
The utility model relates to the lorry-mounted crane supporting leg of a kind of large-tonnage, the big arm width of cloth, particularly a kind of twin-stage built-in oil pipe supporting leg that stretches.
Background technology
At present, the supporting leg of car hosit all is that single-stage is flexible, cross cylinder with stretch movable leg and be connected, the supporting leg maneuvering valve is arranged in a leg outer side to the control flexible pipe of vertical leg, this control flexible pipe is because outside being exposed to, and very easily hit and breakage occurs, owing to be that the flexible of supporting leg stretches for single-stage, the span of supporting leg is little, can not satisfy the use of large-tonnage, big arm width of cloth hoisting crane.
The utility model content
The purpose of this utility model is to provide a kind of: can satisfy large-tonnage, big arm width of cloth hoisting crane use, the control flexible pipe is the flexible built-in oil pipe supporting leg of twin-stage of cracky not.
The purpose of this utility model is that this is existing like this: this supporting leg includes foundation mass, the first telescopic locking assembly, first Retractive leg, first cross cylinder, second cross cylinder, second Retractive leg, the vertical hydraulic support oil cylinder, second telescopic locking assembly and the vertical leg, first Retractive leg is inserted in the foundation mass, be connected with the first telescopic locking assembly in the end of foundation mass, in first Retractive leg, be connected with first cross cylinder, be connected with the second telescopic locking assembly in the end of first Retractive leg, second Retractive leg is inserted in first Retractive leg, end at second Retractive leg is connected with vertical leg, in vertical leg, be connected with the vertical hydraulic support oil cylinder, first cross cylinder, second cross cylinder is connected with hydraulic control pump with the vertical hydraulic support oil cylinder.
Hydraulic control pump has sequence valve, combine valve, plunger pump and bidirectional hydraulic lock, between first cross cylinder and second cross cylinder, be connected with sequence valve, first cross cylinder series connection back, second cross cylinder is connected with combine valve, combine valve is connected with the vertical hydraulic support oil cylinder by bidirectional hydraulic lock, combine valve is connected with plunger pump, and leads to oil sump.
Beneficial effect: owing to adopted above-mentioned scheme, twin-stage telescopic outrigger cross cylinder is two joint cylinders, and middle sequence of erection valve guarantees that movable supporting legs is flexible in proper order; The control flexible pipe of control vertical leg oil cylinder is installed in the square chest inside of supporting leg;, hard tube soft in the employing of twin-stage telescopic outrigger in-to-in control flexible pipe also used; the flexible pipe that can lead after hard tube after the bending is fixing is not damaged with supporting leg is flexible back and forth; the pipeline that adequately protects is not damaged; prolong the service life of pipeline, reached the purpose of this utility model.This leg structure is simple, and pilot piping is not fragile, can satisfy large-tonnage, big arm width of cloth hoisting crane is regulated the work of different spans under different operating modes, improved the stability on the corresponding chassis of difference, easy to operate, quick and high efficiency.
Description of drawings
Fig. 1 is a constructional drawing of the present utility model.
Fig. 2 is fluid control figure of the present utility model.
The specific embodiment
Embodiment 1: in Fig. 1, Fig. 2, and 1, foundation mass; 2, the first telescopic locking assembly; 3, first Retractive leg; 4, first cross cylinder; 5, second cross cylinder; 6, second Retractive leg; 7, vertical hydraulic support oil cylinder; 8, the second telescopic locking assembly; 9, vertical leg; 2-1, sequence valve; 2-2, combine valve; , the 2-3 plunger pump; 2-4, bidirectional hydraulic lock.
This supporting leg includes foundation mass 1, the first telescopic locking assembly 2, first Retractive leg 3, first cross cylinder 4, second cross cylinder 5, second Retractive leg 6, vertical hydraulic support oil cylinder 7, the second telescopic locking assembly 8 and vertical leg 9, first Retractive leg 3 is inserted in the foundation mass 1, be connected with the first telescopic locking assembly 2 in the end of foundation mass 1, in first Retractive leg 3, be connected with first cross cylinder 4, be connected with the second telescopic locking assembly 8 in the end of first Retractive leg 3, second Retractive leg 6 is inserted in first Retractive leg 3, be connected with vertical leg 9 in the end of second Retractive leg 6, in vertical leg 9, be connected with vertical hydraulic support oil cylinder 7, the first cross cylinders 4, second cross cylinder 5 is connected with hydraulic control pump with vertical hydraulic support oil cylinder 7.
Hydraulic control pump has sequence valve 2-1, combine valve 2-2, plunger pump 2-3 and bidirectional hydraulic lock 2-4, between first cross cylinder 4 and second cross cylinder 5, be connected with sequence valve 2-1, first cross cylinder 4 is connected with combine valve 2-2 with second cross cylinder, 5 series connection backs, combine valve 2-2 is connected with vertical hydraulic support oil cylinder 7 by bidirectional hydraulic lock 2-4, combine valve 2-2 is connected with plunger pump 2-3, and leads to oil sump.
First cross cylinder, 4 one ends are connected on the foundation mass 1, and the other end is connected on first Retractive leg 3 by the twisted point axle.Second cross cylinder, 5 one ends are connected one and stretch on the movable leg 3, and the other end is connected on second Retractive leg 6 by the twisted point axle.Vertical leg and vertical hydraulic support oil cylinder are housed on second Retractive leg.Hydraulic tubing is arranged in movable leg square chest inside.
During use, handle the hand valve on the loop wheel machine, first cross cylinder 4 drives one and stretches movable leg 3 and stretch out, and second cross cylinder 5 drives two and stretches movable leg 6 and stretch out then.And can be different spans to supporting leg locking by locking assembly 2.While is stretching of may command vertical hydraulic support oil cylinder 7 also.Twin-stage telescopic outrigger span scope is 2323~7023mm, and different spans can satisfy different operating modes.

Claims (2)

1, a kind of twin-stage built-in oil pipe supporting leg that stretches, it is characterized in that: this supporting leg includes foundation mass, the first telescopic locking assembly, first Retractive leg, first cross cylinder, second cross cylinder, second Retractive leg, the vertical hydraulic support oil cylinder, second telescopic locking assembly and the vertical leg, first Retractive leg is inserted in the foundation mass, be connected with the first telescopic locking assembly in the end of foundation mass, in first Retractive leg, be connected with first cross cylinder, be connected with the second telescopic locking assembly in the end of first Retractive leg, second Retractive leg is inserted in first Retractive leg, end at second Retractive leg is connected with vertical leg, in vertical leg, be connected with the vertical hydraulic support oil cylinder, first cross cylinder, second cross cylinder is connected with hydraulic control pump with the vertical hydraulic support oil cylinder.
2, the flexible built-in oil pipe supporting leg of twin-stage according to claim 1, it is characterized in that: hydraulic control pump has sequence valve, combine valve, plunger pump and bidirectional hydraulic lock, between first cross cylinder and second cross cylinder, be connected with sequence valve, first cross cylinder series connection back, second cross cylinder is connected with combine valve, combine valve is connected with the vertical hydraulic support oil cylinder by bidirectional hydraulic lock, combine valve is connected with plunger pump, and leads to oil sump.
CNU2008200696357U 2008-03-11 2008-03-11 Two-stage telescoping built-in oil conduit supporting leg CN201220896Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200696357U CN201220896Y (en) 2008-03-11 2008-03-11 Two-stage telescoping built-in oil conduit supporting leg

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200696357U CN201220896Y (en) 2008-03-11 2008-03-11 Two-stage telescoping built-in oil conduit supporting leg

Publications (1)

Publication Number Publication Date
CN201220896Y true CN201220896Y (en) 2009-04-15

Family

ID=40574409

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200696357U CN201220896Y (en) 2008-03-11 2008-03-11 Two-stage telescoping built-in oil conduit supporting leg

Country Status (1)

Country Link
CN (1) CN201220896Y (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072523A1 (en) * 2009-12-15 2011-06-23 湖南三一智能控制设备有限公司 Supporting device for crane and crane thereof
CN102275818A (en) * 2011-05-18 2011-12-14 长沙中联重工科技发展股份有限公司 Stay rope type landing leg structure and crane comprising same
CN102303813A (en) * 2011-09-08 2012-01-04 徐州重型机械有限公司 Crane support leg, support leg hydraulic system and crane
CN102874696A (en) * 2012-09-27 2013-01-16 徐州天地重型机械制造有限公司 Two-stage synchronous extensible landing leg
WO2013037205A1 (en) * 2011-09-14 2013-03-21 湖南三一智能控制设备有限公司 Retractable support leg and engineering machine with same
CN102996553A (en) * 2012-11-27 2013-03-27 三一重工股份有限公司 Support leg hydraulic system and engineering machinery
CN103303269A (en) * 2012-03-14 2013-09-18 徐州徐工施维英机械有限公司 Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072523A1 (en) * 2009-12-15 2011-06-23 湖南三一智能控制设备有限公司 Supporting device for crane and crane thereof
CN102275818A (en) * 2011-05-18 2011-12-14 长沙中联重工科技发展股份有限公司 Stay rope type landing leg structure and crane comprising same
CN102303813A (en) * 2011-09-08 2012-01-04 徐州重型机械有限公司 Crane support leg, support leg hydraulic system and crane
CN102303813B (en) * 2011-09-08 2014-07-16 徐州重型机械有限公司 Crane support leg, support leg hydraulic system and crane
WO2013037205A1 (en) * 2011-09-14 2013-03-21 湖南三一智能控制设备有限公司 Retractable support leg and engineering machine with same
CN103303269A (en) * 2012-03-14 2013-09-18 徐州徐工施维英机械有限公司 Extension and retraction mechanism and support leg extension and retraction system for concrete pump truck
CN102874696A (en) * 2012-09-27 2013-01-16 徐州天地重型机械制造有限公司 Two-stage synchronous extensible landing leg
CN102996553A (en) * 2012-11-27 2013-03-27 三一重工股份有限公司 Support leg hydraulic system and engineering machinery
CN102996553B (en) * 2012-11-27 2015-06-10 三一重工股份有限公司 Support leg hydraulic system and engineering machinery

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CX01 Expiry of patent term
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Granted publication date: 20090415