CN110054098A - Crane draws telescopic large span supporting leg - Google Patents
Crane draws telescopic large span supporting leg Download PDFInfo
- Publication number
- CN110054098A CN110054098A CN201910398131.2A CN201910398131A CN110054098A CN 110054098 A CN110054098 A CN 110054098A CN 201910398131 A CN201910398131 A CN 201910398131A CN 110054098 A CN110054098 A CN 110054098A
- Authority
- CN
- China
- Prior art keywords
- supporting leg
- leg
- telescopic outrigger
- external extension
- block
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000003381 stabilizer Substances 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 21
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 1
- 210000002435 tendon Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes 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
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The present invention relates to a kind of cranes to draw telescopic large span supporting leg, it includes horizontal support legs (1) and vertical leg (2), horizontal support legs (1) are made of fixed supporting leg (11), external extension supporting leg (12), interior telescopic outrigger (13) and horizontal hydraulic pressure oil cylinder (14), the outer wall of interior telescopic outrigger (13) towards one end of vertical leg (2) opposite direction, which is equipped with, to be dragged block (15), and external extension supporting leg (12) is equipped with and the block (16) that drags block (15) to match to the inner wall of the overhanging one end of fixed supporting leg (11).It has structure simple instead of pulley wire rope type stretching structure, installs and easy to maintain, failure rate is low, the ideal advantage of using effect.It is while ensure that stabilizer blade span, landing leg stretching structure is greatly simplified than pulley wire rope structure, keeps failure rate when landing leg stretching lower, and it is higher supporting leg can be designed intensity, operating efficiency, stability and the safety of crane can be effectively ensured, using effect is more ideal.
Description
Technical field
The present invention relates to cranes, and in particular to a kind of crane large span supporting leg.
Background technique
In order to guarantee the passage capacity of mobilecrane, maximum of the stabilizer blade of this crane when bouncing back driving status
Span makes crane realize the operation of stabilizer blade large span and improve elevating capacity and is limited no more than the width of vehicle chassis
System.The supporting leg of conventional mobile crane is mostly single-stage telescopic structure, and the flexible of movable supporting legs is piston by hydraulic cylinder
Bar drives come what is completed, and the length of fit of movable supporting legs and fixed supporting leg can not reach requirement when single-stage supporting leg is overhanging too long, nothing
Method guarantees the intensity of entire supporting leg, and safety will receive influence.Therefore the extension of this single-stage stretching structure is limited, unfavorable
In the span for improving stabilizer blade, since support span is smaller, loop wheel machine easily occurs rollover, topples, to limit in side operation
The elevating capacity of crane.
Later, single-stage supporting leg was revised as mutually nested two-stage telescopic outrigger structure by someone, overcame the flexible branch of single-stage
The overhanging defect crossing the long duration strenth and not ensureing of leg.Since supporting leg inner space is limited, it is not easy to two oil cylinders of installation and controls respectively
It makes two telescopic outriggers to stretch, the overhanging and retraction of this two-stage supporting leg adds steel cable and pulley knot using an oil cylinder
Structure.When supporting leg is overhanging, oil cylinder drives second level supporting leg overhanging, and second level supporting leg is overhanging by wirerope and pulley driving level-one supporting leg,
Achieve the purpose that entire supporting leg is overhanging；When supporting leg bounces back, oil cylinder drives second level supporting leg retraction, and second level supporting leg passes through wirerope and cunning
Wheel drives level-one supporting leg retraction, achievees the purpose that entire supporting leg retraction.But since supporting leg inner space is limited, in supporting leg in addition to
Installation hydraulic cylinder and oil pipe also need to install the steel cable pulley stretching structure of this complexity, and this supporting leg is caused to install and tie up
Protect very inconvenient, and failure rate is also relatively high after prolonged use for steel cable and pulley stretching structure, and using effect is simultaneously
It is undesirable.
Summary of the invention
The object of the present invention is to provide a kind of structure is simple, installation and easy to maintain, failure rate is low, and using effect is ideal
Crane draws telescopic large span supporting leg.
The technical solution of the invention is as follows: it includes horizontal support legs and vertical leg, and horizontal support legs are by fixed supporting leg, outer
Telescopic outrigger, interior telescopic outrigger and horizontal hydraulic pressure oil cylinder are constituted, and external extension supporting leg sliding sleeve is in fixed supporting leg, interior flexible branch
Leg sliding sleeve is in external extension supporting leg, and horizontal hydraulic pressure oil cylinder is located in interior telescopic outrigger, the rear end of horizontal hydraulic pressure cylinder block
It is fixedly mounted on fixed supporting leg, the end of piston rod is fixedly linked with interior telescopic outrigger to the overhanging one end of fixed supporting leg, interior
Telescopic outrigger is fixedly linked to the overhanging one end transverse and vertical supporting leg of fixed supporting leg, and interior telescopic outrigger is towards vertical leg negative side
To one end outer wall be equipped with matched with external extension supporting leg drag block, external extension supporting leg is to the overhanging one end of fixed supporting leg
Inner wall be equipped with the block that drags block to match, horizontal hydraulic pressure oil cylinder drive in telescopic outrigger be extended to block dragged to be in contact with block
When, drive external extension supporting leg overhanging, horizontal hydraulic pressure oil cylinder drive in telescopic outrigger retract to the end of interior telescopic outrigger with it is overhanging
When the end of contracting supporting leg is in contact, external extension supporting leg is driven to be set back in fixed supporting leg.
The solution have the advantages that: it has structure simple instead of pulley wire rope type stretching structure, installation and dimension
Shield is convenient, and failure rate is low, the ideal advantage of using effect.While ensure that stabilizer blade span, landing leg stretching structure is than sliding for it
Wheel steel cord structure greatly simplifies, and keeps failure rate when landing leg stretching lower, and it is higher that supporting leg can be designed to intensity, can be with
Operating efficiency, stability and the safety of crane is effectively ensured, using effect is more ideal.Due to simplifying landing leg stretching knot
Structure, or crane realizes that enlargement development provides technical foundation.
Detailed description of the invention
Fig. 1 is cross-sectional view of the embodiment of the present invention.
Specific embodiment
As shown in Figure 1, it includes horizontal support legs 1 and vertical leg 2, horizontal support legs 1 are by fixed supporting leg 11, external extension supporting leg
12, interior telescopic outrigger 13 and horizontal hydraulic pressure oil cylinder 14 are constituted, and 12 sliding sleeve of external extension supporting leg is interior flexible in fixed supporting leg 11
13 sliding sleeve of supporting leg is in external extension supporting leg 12, and horizontal hydraulic pressure oil cylinder 14 is located in interior telescopic outrigger 13, horizontal hydraulic pressure oil cylinder
The rear end of 14 cylinder bodies is fixedly mounted on fixed supporting leg 11, the end of piston rod and interior telescopic outrigger 13 are overhanging to fixed supporting leg 11
One end be fixedly linked, interior telescopic outrigger 13 is fixedly linked to the overhanging one end transverse and vertical supporting leg 2 of fixed supporting leg 11, inside stretches
The outer wall of contracting supporting leg 13 towards one end of 2 opposite direction of vertical leg drags block 15 equipped with what is matched with external extension supporting leg 12, outside
Telescopic outrigger 12 is equipped with and the block 16 that drags block 15 to match, horizontal hydraulic pressure oil to the inner wall of the overhanging one end of fixed supporting leg 11
When cylinder 14 drives interior telescopic outrigger 13 to be extended to block 15 is dragged to be in contact with block 16, drive external extension supporting leg 12 overhanging, horizontal liquid
When compressing cylinder 14 drives interior telescopic outrigger 13 to retract to the end of interior telescopic outrigger 13 to be in contact with the end of external extension supporting leg 12,
External extension supporting leg 12 is driven to be set back in fixed supporting leg 11.
Drag block 15 be set to interior 13 upper side position of telescopic outrigger outer wall on and be projected into outside interior telescopic outrigger 13, block 16 with
It drags block 15 to match on the inner wall of 12 upper side position of external extension supporting leg and is projected into outside 12 inner wall of external extension supporting leg.
It drags block 15 to be mounted on interior telescopic outrigger 13 by bolt, the lower half portion of block 15 is dragged to be embedded in interior telescopic outrigger 13
Wall portion, top half are projected into outside interior telescopic outrigger 13, and block 16 is welded on the inner wall of external extension supporting leg 12.
The cross section of fixed supporting leg 11, external extension supporting leg 12 and interior telescopic outrigger 13 is respectively that up and down direction width is greater than water
Square to width rectangle.
Fixed supporting leg 11 towards on the upside outer wall of 2 one end end of vertical leg and on left and right sides upper semisection outer wall laterally
Equipped with inverted U-shaped reinforcing rib 1.
External extension supporting leg 12 is towards horizontal on the upside outer wall of 2 one end end of vertical leg and on left and right sides upper semisection outer wall
To equipped with inverted U-shaped reinforcing rib 2 18.
Vertical leg 2 is made of setting supporting leg 21 and vertical hydraulic oil cylinder 22, the tailpiece of the piston rod court of vertical hydraulic oil cylinder 22
Under be mounted on erect in supporting leg 21, the end of piston rod is equipped with the stabilizer blade 23 for being located at and erectting 21 lower section of supporting leg.Erect supporting leg 21
It is fixedly linked close to the side wall of upper end position and one end of interior telescopic outrigger 13 towards vertical leg 2.
Working principle:
When horizontal support legs 1 are overhanging, 14 piston rod of horizontal hydraulic pressure oil cylinder is protruding, by interior telescopic outrigger 13 from external extension supporting leg 12
It is introversive extrapolated, shift on interior telescopic outrigger 13 when block 15 being dragged to be in contact with the link stopper 16 on external extension supporting leg 12, it is interior to stretch
It is protruding together that supporting leg 13 can draw external extension supporting leg 12, until 14 piston rod of horizontal hydraulic pressure oil cylinder all stretches out.
Horizontal support legs 1 bounce back when, 14 piston rod of horizontal hydraulic pressure oil cylinder bounce back into fixed supporting leg 11 drive in telescopic outrigger 13 bounce back, time
When being reduced to the end of interior telescopic outrigger 13 and being in contact with the end of external extension supporting leg 12, interior telescopic outrigger 13 can draw external extension
Supporting leg 12 bounces back together, until the end of external extension supporting leg 12 is in contact with the end of fixed supporting leg 11, at this time by setting
14 piston rod of horizontal hydraulic pressure oil cylinder is fully retracted into cylinder body.
By design external extension supporting leg 12 and 13 two-stage telescopic outrigger of interior telescopic outrigger, do not changing crane external dimensions
In the case where, when second level telescopic outrigger is fully deployed, span can increase by 30% or more than only setting level-one Retractive leg, increase lifting
Machine stabilizer blade span improves crane working radius, so that job stability and safety is got a promotion, and crane is made to exist
When carrying out heavy load operation, anti-overturning is higher.Supporting leg job security and reliability can be made using pull-alongs stretching structure
Higher, failure rate is lower, use it is more guaranteed, and can for crane realize enlargement development technical foundation be provided.
Claims (8)
1. crane draws telescopic large span supporting leg, it includes horizontal support legs (1) and vertical leg (2), horizontal support legs (1) by
Fixed supporting leg (11), external extension supporting leg (12), interior telescopic outrigger (13) and horizontal hydraulic pressure oil cylinder (14) are constituted, external extension supporting leg
(12) sliding sleeve is in fixed supporting leg (11), and interior telescopic outrigger (13) sliding sleeve is in external extension supporting leg (12), horizontal liquid
Compressing cylinder (14) is located in interior telescopic outrigger (13), and the rear end of horizontal hydraulic pressure oil cylinder (14) cylinder body is fixedly mounted on fixed supporting leg
(11) on, the end of piston rod be fixedly linked with interior telescopic outrigger (13) to the overhanging one end of fixed supporting leg (11), interior flexible branch
Leg (13) is fixedly linked to the overhanging one end transverse and vertical supporting leg (2) of fixed supporting leg (11), it is characterised in that: interior telescopic outrigger
(13) outer wall towards one end of vertical leg (2) opposite direction drags block (15) equipped with what is matched with external extension supporting leg (12),
External extension supporting leg (12) to the inner wall of the overhanging one end of fixed supporting leg (11) be equipped with the block (16) that drags block (15) to match,
Horizontal hydraulic pressure oil cylinder (14) drive in telescopic outrigger (13) be extended to when block (15) being dragged to be in contact with block (16), drive external extension
Supporting leg (12) is overhanging, horizontal hydraulic pressure oil cylinder (14) drive in telescopic outrigger (13) retract to the end of interior telescopic outrigger (13) and outer
When the end of telescopic outrigger (12) is in contact, external extension supporting leg (12) is driven to be set back in fixed supporting leg (11).
2. crane as described in claim 1 draws telescopic large span supporting leg, it is characterised in that described that block (15) is dragged to be set to
On the outer wall of interior telescopic outrigger (13) upper side position and it is projected into interior telescopic outrigger (13) outside, block (16) matches with block (15) are dragged
It closes on the inner wall for being set to external extension supporting leg (12) upper side position and is projected into outside external extension supporting leg (12) inner wall.
3. crane as claimed in claim 2 draws telescopic large span supporting leg, it is characterised in that described that block (15) is dragged to pass through
Bolt is mounted on interior telescopic outrigger (13), and the lower half portion of block (15) is dragged to be embedded in interior telescopic outrigger (13) wall portion, the upper half
Divide and be projected into interior telescopic outrigger (13) outside, block (16) is welded on the inner wall of external extension supporting leg (12).
4. crane as described in claim 1 draws telescopic large span supporting leg, it is characterised in that the fixed supporting leg (11),
The cross section of external extension supporting leg (12) and interior telescopic outrigger (13) is respectively the square that up and down direction width is greater than horizontal direction width
Shape.
5. crane as described in claim 1 draws telescopic large span supporting leg, it is characterised in that the fixed supporting leg (11)
On towards the upside outer wall of vertical leg (2) one end end and inverted U-shaped reinforcing rib is transversely provided on left and right sides upper semisection outer wall
One (17).
6. crane as described in claim 1 draws telescopic large span supporting leg, it is characterised in that the external extension supporting leg
(12) towards be transversely provided on the upside outer wall of vertical leg (2) one end end and on left and right sides upper semisection outer wall it is inverted U-shaped plus
Strengthening tendons two (18).
7. crane as described in claim 1 draws telescopic large span supporting leg, it is characterised in that the vertical leg (2) by
It erects supporting leg (21) and vertical hydraulic oil cylinder (22) is constituted, the tailpiece of the piston rod of vertical hydraulic oil cylinder (22) is mounted on setting branch downward
In leg (21), the end of piston rod the stabilizer blade (23) for being located at and erectting below supporting leg (21) is installed.
8. crane as claimed in claim 7 draws telescopic large span supporting leg, it is characterised in that the setting supporting leg (21)
It is fixedly linked close to the side wall of upper end position and one end of interior telescopic outrigger (13) towards vertical leg (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910398131.2A CN110054098A (en) | 2019-05-14 | 2019-05-14 | Crane draws telescopic large span supporting leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910398131.2A CN110054098A (en) | 2019-05-14 | 2019-05-14 | Crane draws telescopic large span supporting leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110054098A true CN110054098A (en) | 2019-07-26 |
Family
ID=67323108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910398131.2A Pending CN110054098A (en) | 2019-05-14 | 2019-05-14 | Crane draws telescopic large span supporting leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110054098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529464A (en) * | 2019-07-29 | 2019-12-03 | 中联重科股份有限公司 | Telescopic support posture detection method and system and engineering equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060043718A1 (en) * | 2004-09-01 | 2006-03-02 | Mayer Martin G | Vertical outrigger leg |
| 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 |
| CN203461737U (en) * | 2013-08-01 | 2014-03-05 | 辽宁瑞丰专用车制造有限公司 | Telescopic device of two-stage movable supporting legs |
| CN210012521U (en) * | 2019-05-14 | 2020-02-04 | 姚运文 | Telescopic large-span support leg for crane dragging |
-
2019
- 2019-05-14 CN CN201910398131.2A patent/CN110054098A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060043718A1 (en) * | 2004-09-01 | 2006-03-02 | Mayer Martin G | Vertical outrigger leg |
| 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 |
| CN203461737U (en) * | 2013-08-01 | 2014-03-05 | 辽宁瑞丰专用车制造有限公司 | Telescopic device of two-stage movable supporting legs |
| CN210012521U (en) * | 2019-05-14 | 2020-02-04 | 姚运文 | Telescopic large-span support leg for crane dragging |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529464A (en) * | 2019-07-29 | 2019-12-03 | 中联重科股份有限公司 | Telescopic support posture detection method and system and engineering equipment |
| CN110529464B (en) * | 2019-07-29 | 2020-11-03 | 中联重科股份有限公司 | Telescopic support posture detection method and system and engineering equipment |
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