CN101898729A - Method for lowering gravity center of crane arm support - Google Patents
Method for lowering gravity center of crane arm support Download PDFInfo
- Publication number
- CN101898729A CN101898729A CN 201010255199 CN201010255199A CN101898729A CN 101898729 A CN101898729 A CN 101898729A CN 201010255199 CN201010255199 CN 201010255199 CN 201010255199 A CN201010255199 A CN 201010255199A CN 101898729 A CN101898729 A CN 101898729A
- Authority
- CN
- China
- Prior art keywords
- crane
- jib
- arm support
- gravity center
- folding
- 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
Images
Landscapes
- Jib Cranes (AREA)
Abstract
The invention provides a method for lowering a gravity center of a crane arm support, comprising the following steps: connecting a crane pulling plate connected at the top end of the arm support to one arm section of the arm support; folding the arm support from the arm section; utilizing a bracket to connect the folded two arm supports into a whole; and finally utilizing a digging rope to vertically connect the folded arm support to the crane. The method for lowering the gravity center of the crane arm support of the invention has simple operation, effectively lowers the gravity center of the whole arm support of a crawler crane in the travelling process and improves the balanced capacity thereof, thereby effectively preventing the crane from tipping in the travelling process and lowering the requirements of the crane on travelling pavement levelness.
Description
Technical field
The present invention relates to the technical field of hoisting crane, especially, relate to a kind of method that reduces gravity center of crane arm support.
Background technology
When crawler crane walking and operation, need to keep self balance.Usually, the clump weight at the rear portion of crawler crane loading constant weight keeps it stable.
Yet,,, need carry out full jib walking usually in order to guarantee work efficiency when crawler crane during in operation.View when Fig. 1 is the walking of the full jib of crawler crane.As shown in Figure 1, even the clump weight of constant weight is loaded at the crawler crane rear portion, still might when walking, tumble.This is because the jib of crawler crane itself has cooresponding weight, and when crawler crane carried out full jib walking, the center of gravity of whole crawler crane was too high.In addition, when the full jib of crawler crane was walked, the levelness of road pavement required corresponding higher.Ground-surface uneven easier the tumble generation of phenomenon of crawler crane that causes of jolting.But crawler crane carries out operation in the open air or under the environment such as building site usually, and pavement conditions is relatively poor, and its levelness can't guarantee.
One of solution to the problems described above increases more clump weight at the rear portion of crawler crane exactly.Yet the said method operation is comparatively loaded down with trivial details, and has increased the operating cost of crawler crane and operator's labor content, has reduced the work efficiency of crawler crane.Thereby, be badly in need of a kind of method of simple and effective reduction crawler crane boom center of gravity.
Summary of the invention
The objective of the invention is to, a kind of method that reduces gravity center of crane arm support is provided, it has effectively reduced the center of gravity of crane arm support, thereby has improved the stability when the full jib of crawler crane is walked, and has reduced the requirement of road pavement levelness.
To achieve these goals, a kind of method that reduces gravity center of crane arm support of the present invention, it may further comprise the steps:
Step 1: the crane pulling plate that will be connected the jib top is connected to a certain arm section of jib;
Step 2: jib is folding in described arm section;
Step 3: the two ends jib after will folding by support connects as one;
Step 4: the jib after will folding by stay cord more at last vertically is connected on the hoisting crane.
According to the method for above-mentioned reduction gravity center of crane arm support, wherein, the arm-tie in the step 1 replaces with stay cord.
According to the method for above-mentioned reduction gravity center of crane arm support, wherein, in the step 1, described arm section is the intermediate arm place of jib.
According to the method for above-mentioned reduction gravity center of crane arm support, wherein, before carry out step 1, with the crane arm support horizontal positioned.
According to the method for above-mentioned reduction gravity center of crane arm support, wherein, in the step 3, support by blocking device with folding after the two ends jib be fixedly linked.
Further, according to the method for above-mentioned reduction gravity center of crane arm support, wherein, described blocking device is a bearing pin.
Therefore, a kind of method that reduces gravity center of crane arm support of the present invention is simple to operate, effectively reduced the center of gravity when the full jib of crawler crane is walked, improved its balanced capacity, the generation of the phenomenon of tumbling when thereby actv. has prevented the hoisting crane walking has reduced the requirement to hoisting crane walking road level degree.
Description of drawings
Fig. 1 is the view when the full jib of crawler crane is walked in the prior art;
View when Fig. 2 walks for the full jib of crawler crane among the present invention is folding
Fig. 3 is the local enlarged diagram of Fig. 2.
The specific embodiment
The present invention will be further described in detail below in conjunction with accompanying drawing.
(1) embodiment one:
In first preferred embodiment of the present invention, the method that reduces gravity center of crane arm support may further comprise the steps:
Step 1: the crane pulling plate that will be connected the jib top is connected to a certain arm section of jib;
Step 2: jib is folding in described arm section;
Step 3: the two ends jib after will folding by support connects as one;
Step 4: the jib after will folding by stay cord more at last vertically is connected on the hoisting crane.
After folding, the state of crane arm support as shown in Figure 2.Originally the arm-tie 1 that is connected the jib top is connected a certain arm section of jib, and 2 on support is used to connect the jib after folding, makes firm the connecting together of two parts parts after folding and folding.In order to guarantee the stability of the jib after folding, adopt the jib after stay cord 3 will fold to be connected on the hoisting crane, prevent that its swing is too big, to guarantee the balance of the crawler crane in the motion.
(2) embodiment two:
In second preferred embodiment of the present invention, the method that reduces gravity center of crane arm support may further comprise the steps:
Step 1: hoisting crane first stay cord that will be connected the jib top is connected to a certain arm section of jib;
Step 2: jib is folding in described arm section;
Step 3: the two ends jib after will folding by support connects as one;
Step 4: the jib after will folding by second stay cord more at last vertically is connected on the hoisting crane.
Among this embodiment, reduce the method for gravity center of crane arm support and the method basically identical in first preferred embodiment, just under suitable lifting requires, can adopt stay cord to connect a certain arm section, reach the purpose that keeps the hoisting crane balance equally.
(3) embodiment three:
In the 3rd preferred embodiment of the present invention, the method that reduces gravity center of crane arm support may further comprise the steps:
Step 1: the crane pulling plate that will be connected the jib top is connected to the intermediate arm place of jib;
Step 2: jib is folding at described intermediate arm place;
Step 3: the two ends jib after will folding by support connects as one;
Step 4: the jib after will folding by stay cord more at last vertically is connected on the hoisting crane.
Among this embodiment, basic identical in the method for reduction gravity center of crane arm support and first preferred embodiment and second preferred embodiment, be the concrete intermediate arm place that the qualification of the stay cord in the step 1 is connected jib.So, make jib folding along the center, two parts jib after folding is symmetrical, and is minimum thereby the hoisting crane center of gravity after feasible the folding drops to, and guaranteed hoisting crane single-piece stability.
(4) embodiment four:
In the 4th preferred embodiment of the present invention, the method that reduces gravity center of crane arm support may further comprise the steps:
Step 1: hoisting crane first stay cord that will be connected the jib top is connected to the intermediate arm place of jib;
Step 2: jib is folding at described intermediate arm place;
Step 3: the two ends jib after will folding by support connects as one;
Step 4: the jib after will folding by second stay cord more at last vertically is connected on the hoisting crane.
In this embodiment, under suitable lifting weight requires, adopt stay cord to be connected to the intermediate arm place of jib, make that jib is centrosymmetric to fold, thus the center of gravity of jib is dropped to minimum, actv. prevented from the to tumble generation of phenomenon.
As shown in Figure 3, support 2 must be captiveed joint with the two ends jib after folding, to guarantee the safety problem in the hoisting crane walking process.Thereby, adopt in the present invention certain blocking device with support 2 with folding after the two ends jib captive joint.Preferably, can adopt bearing pin to carry out being connected between support 2 and the jib.
Simultaneously, for the folding convenience of crane arm support, can also step 1 in the above-described embodiments before, the crane arm support integral level is placed, carry out corresponding folding again, thereby reduce the control step in the jib folding process, increase work efficiency.
In addition, in the method for the center of gravity of reduction crane arm support of the present invention, jib can also be carried out repeatedly folding downwards, thereby make the center of gravity of jib become lower, to adapt to different condition of road surfaces.Certainly, repeatedly foldingly just mean comparatively complicated folding operation.Thereby, can select suitable folding times according to hoisting crane concrete operations situation, the stability requirement when walking to satisfy crawler crane.
Therefore, a kind of method that reduces gravity center of crane arm support of the present invention is simple to operate, effectively reduced the center of gravity when the full jib of crawler crane is walked, improved its balanced capacity, the generation of the phenomenon of tumbling when thereby actv. has prevented the hoisting crane walking has reduced the requirement to hoisting crane walking road level degree.
More than specific embodiments of the invention are described in detail, but the present invention is not restricted to specific embodiment described above, it is just as example.To those skilled in the art, any equivalent modifications that the method for this reduction gravity center of crane arm support is carried out and substituting also all among category of the present invention.Therefore, not breaking away from impartial conversion and the modification of having done under the spirit and scope of the present invention, all should contain within the scope of the invention.
Claims (6)
1. a method that reduces gravity center of crane arm support is characterized in that, may further comprise the steps:
Step 1: the crane pulling plate that will be connected the jib top is connected to a certain arm section of jib;
Step 2: jib is folding in described arm section;
Step 3: the two ends jib after will folding by support connects as one;
Step 4: the jib after will folding by stay cord more at last vertically is connected on the hoisting crane.
2. the method for reduction gravity center of crane arm support according to claim 1 is characterized in that, the arm-tie in the step 1 replaces with stay cord.
3. the method for reduction gravity center of crane arm support according to claim 1 is characterized in that, in the step 1, described arm section is the intermediate arm place of jib.
4. the method for reduction gravity center of crane arm support according to claim 1 is characterized in that, before carry out step 1, with the crane arm support horizontal positioned.
5. the method for reduction gravity center of crane arm support according to claim 1 is characterized in that, in the step 3, support by blocking device with folding after the two ends jib be fixedly linked.
6. the method for reduction gravity center of crane arm support according to claim 5 is characterized in that, described blocking device is a bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010255199 CN101898729A (en) | 2010-08-17 | 2010-08-17 | Method for lowering gravity center of crane arm support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010255199 CN101898729A (en) | 2010-08-17 | 2010-08-17 | Method for lowering gravity center of crane arm support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101898729A true CN101898729A (en) | 2010-12-01 |
Family
ID=43224719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010255199 Pending CN101898729A (en) | 2010-08-17 | 2010-08-17 | Method for lowering gravity center of crane arm support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101898729A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259801A (en) * | 2011-04-28 | 2011-11-30 | 上海三一科技有限公司 | Folding arm support for truss arm crawler crane |
| CN102358580A (en) * | 2011-08-12 | 2012-02-22 | 中联重科股份有限公司 | Folding boom structure and method for unfolding and folding the same |
| CN102674169A (en) * | 2012-06-08 | 2012-09-19 | 中联重科股份有限公司 | Truss arm frame, folding method thereof and crane |
| WO2013023347A1 (en) * | 2011-08-12 | 2013-02-21 | 长沙中联重工科技发展股份有限公司 | Foldable boom structure and method for unfolding and folding the foldable boom structure |
| CN104340885A (en) * | 2014-10-30 | 2015-02-11 | 徐工集团工程机械股份有限公司 | Crawling crane and boom frame system thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030591U (en) * | 1988-04-16 | 1989-01-11 | 常熟市装卸运输公司 | Small-tonnage wheeled trailed crane |
| JPH0761773A (en) * | 1993-08-20 | 1995-03-07 | Koshihara:Kk | Jib crane |
| JP2004256240A (en) * | 2003-02-26 | 2004-09-16 | Ishikawajima Transport Machinery Co Ltd | Crane |
| CN101774513A (en) * | 2010-02-24 | 2010-07-14 | 上海三一科技有限公司 | Folding extension arm |
-
2010
- 2010-08-17 CN CN 201010255199 patent/CN101898729A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030591U (en) * | 1988-04-16 | 1989-01-11 | 常熟市装卸运输公司 | Small-tonnage wheeled trailed crane |
| JPH0761773A (en) * | 1993-08-20 | 1995-03-07 | Koshihara:Kk | Jib crane |
| JP2004256240A (en) * | 2003-02-26 | 2004-09-16 | Ishikawajima Transport Machinery Co Ltd | Crane |
| CN101774513A (en) * | 2010-02-24 | 2010-07-14 | 上海三一科技有限公司 | Folding extension arm |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259801A (en) * | 2011-04-28 | 2011-11-30 | 上海三一科技有限公司 | Folding arm support for truss arm crawler crane |
| CN102259801B (en) * | 2011-04-28 | 2013-06-05 | 上海三一科技有限公司 | Folding arm support for truss arm crawler crane |
| CN102358580A (en) * | 2011-08-12 | 2012-02-22 | 中联重科股份有限公司 | Folding boom structure and method for unfolding and folding the same |
| WO2013023347A1 (en) * | 2011-08-12 | 2013-02-21 | 长沙中联重工科技发展股份有限公司 | Foldable boom structure and method for unfolding and folding the foldable boom structure |
| CN102674169A (en) * | 2012-06-08 | 2012-09-19 | 中联重科股份有限公司 | Truss arm frame, folding method thereof and crane |
| CN104340885A (en) * | 2014-10-30 | 2015-02-11 | 徐工集团工程机械股份有限公司 | Crawling crane and boom frame system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2542831C2 (en) | Hoisting crane (versions) and method for its adjusting | |
| CN101898729A (en) | Method for lowering gravity center of crane arm support | |
| US11247878B2 (en) | Operating method of a wind power jib of a crane and crane | |
| EP1350953A2 (en) | Crane for the assembly of wind turbines and assembly procedure | |
| CN101962156B (en) | Foldable fast-assembling tower crane | |
| CN201842582U (en) | Hydraulic self-discharging crane | |
| CN203922484U (en) | Wind-driven generator tower upset Special assisting tool | |
| CN106219420A (en) | A kind of fast erecting traveling tower crane | |
| CN205892575U (en) | Fast set up traveling tower crane | |
| CN201272674Y (en) | Engineering machinery working aloft and its lifting jib | |
| CN205892577U (en) | Fast set up tower crane's supplementary jib loading boom with water tank counterweight | |
| CN113716472A (en) | Double-arm holding pole | |
| CN105822132A (en) | Unit type assembly and erection method of extra-high-voltage power transmission iron pylon | |
| CN202704895U (en) | Articulated boom of crawler crane | |
| CN205892576U (en) | Fast set up tower crane's jib loading boom turns over a device | |
| CN205892579U (en) | Fast set up tower crane's counter weight mechanism | |
| US20210309495A1 (en) | A multi task lifting beam for placing a load inside a level of a building | |
| CN107487723B (en) | A kind of substation equipment maintenance and repair hoisting apparatus | |
| CN102659041B (en) | Engineering machinery | |
| CN104803303A (en) | Single-movable-arm grounded derrick with rocking balance arm | |
| CN205527415U (en) | Roofing hoist | |
| CN209817944U (en) | Trailer type folding drilling tower | |
| CN107840254A (en) | A kind of agitator tank hanging apparatus | |
| CN209780399U (en) | movable intelligent lifting radar tower | |
| CN209081267U (en) | A kind of fast erecting hanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101201 |