EP2920104A1 - Telescopic boom of high efficiency for cranes - Google Patents
Telescopic boom of high efficiency for cranesInfo
- Publication number
- EP2920104A1 EP2920104A1 EP13803307.1A EP13803307A EP2920104A1 EP 2920104 A1 EP2920104 A1 EP 2920104A1 EP 13803307 A EP13803307 A EP 13803307A EP 2920104 A1 EP2920104 A1 EP 2920104A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- boom
- telescopic
- parts
- telescopic boom
- profile section
- 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.)
- Withdrawn
Links
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
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
Definitions
- the present invention is related to boom structure and boom profile section enabling the telescopic booms to lift loads with high efficiency and to have high resistance in the telescopic boom crane systems.
- Efficiency in lifting load is achieved by using materials having different thickness in the different areas of booms according to the present invention.
- the profile sections of booms are designed so as to provide high resistance.
- the telescopic boom structure is important in terms of the weight of the load to be lifted.
- the resistances of telescopic booms are adjusted in accordance with the weights of said loads and the structures thereof are created accordingly.
- Telescopic boom weights of a crane with fixed lifting capacity must be measured in a detailed manner. While designing the telescopic booms, the booms have minimum values that they have to include because of mechanic resistances thereof. In case of using materials with characteristics below said values, the safety of telescopic booms in lifting load is at risk.
- boom structure and boom profile section providing high efficiency for telescopic boom cranes according to the present invention have been designed. Thanks to telescopic boom structure developed, the effect of the load lifted on each boom is calculated and the materials having different thicknesses are used on different areas on each boom body. Therefore, the own weights of the booms are created in the most appropriate value and the weight of the load to be lifted is increased up to the highest level. Moreover, the load transfer between the booms is calculated and the most appropriate section is obtained thanks to the boom profile section developed. Thus, the mechanic resistance of booms is increased, risks that may occur while using the crane are reduced and the usage life of the material is extended.
- the first telescopic boom body 2.1. The upper part of the first telescopic boom body
- the boom structure and boom profile section for telescopic boom cranes comprises main boom body (1) having two upper parts (1.1 , 1.2) and one lower part (1.3), first telescopic boom body (2) having one upper part (2.1) and two lower parts (2.2, 2.3), second telescopic boom body (3) having two upper parts (3.1, 3.2) and two lower parts (3.3, 3.4), third telescopic boom body (4) having one upper part (4.1) and two lower parts (4.2, 4.3), fourth telescopic boom body (5) having two upper parts (5.1 , 5.2) and two lower parts (5.3, 5.4), and fifth boom body (6) having two upper parts (6.1 , 6.2) and one lower part (6.3).
- each main boom (1) and telescopic booms (2, 3, 4, 5, 6) developed have similar radius value (A) for each boom (1 , 2, 3, 4, 5, 6).
- the ones among the circular sectional structures used at the lower edges of each main boom (1) and telescopic booms (2, 3, 4, 5, 6) developed, which are included at the same edge, have common centers.
- the circular sections at the lower edges of the booms (1 , 2, 3, 4, 5, 6) have common centers with the radiuses R1 , R2, R3, R4, R5 and R6.
- the length (L) of the portion with smooth surface, which remains between the circular sections used at the lower edges thereof, is created so as to be the same.
- the heights and widths of the booms (1 , 2, 3, 4, 5, 6) are determined in accordance with the types and thicknesses of the materials used in boom bodies (1 , 2, 3, 4, 5, 6) and created with the calculations. Therefore, the position of the circular sections used in the booms (1 , 2, 3, 4, 5, 6) whose heights and widths are determined becomes evident spontaneously. Thanks to the common circular sectional radius (A) used in the profile sections of booms (1 , 2, 3, 4, 5, 6) and the fact that circular sections with radiuses R1 , R2, R3, R4, R5, R6 are concentric, the tensions occurring during the force transfer between the telescopic booms (2, 3, 4, 5, 6) are distributed appropriately over the boom profile structure. Thus, the tensions distributed appropriately are controlled easily and material resistances are increased.
- a separate plate (1 .1 ) at the front and another separate plate (1 .2) at the back are used at the upper section of main boom body (1 ).
- the upper parts (1 .1 , 1 .2) used here are created by using the same-typed material but different material thicknesses.
- the lower section of main boom body (1 ) is created from a whole plate (1.3). Again, the material thickness of said lower part (1 .3) is different from that of other parts (1 .1 , 1.2).
- the material thicknesses of the parts (1 .1 , 1 .2, 1 .3) creating the main boom body (1 ) and having different material thicknesses are calculated in accordance with the maximum load to be applied on the main boom body (1 ) and are created in such a manner that empty weight of the main boom body (1 ) will have the lowest amount and they will provide the body (1 ) with the highest resistance.
- the maximum load to be applied on each telescopic boom body (2, 3, 4, 5, 6) is calculated in the telescopic boom bodies (2, 3, 4, 5, 6) developed, and different material thicknesses are used in different areas.
- the first telescopic boom body (2) consists of one upper part (2.1 ) and two lower parts (2.2, 2.3).
- the second telescopic boom body (2) consists of two upper parts (3.1 , 3.2) and two lower parts (3.3, 3.4).
- the third telescopic boom body (4) consists of one upper part (4.1 ) and two lower parts (4.2, 4.3).
- the fourth telescopic boom body (5) consists of two upper parts (5.1 , 5.2) and two lower parts (5.3, 5.4).
- the fifth telescopic boom body (6) consists of two upper parts (6.1 , 6.2) and one lower part (6.3).
- the upper parts (2.1 , 3.1 , 3.2, 4.1 , 5.1 , 5.2, 6.1 , 6.2) and lower parts (2.2, 2.3, 3.3, 3.4, 4.2, 4.3, 5.3, 5.4, 6.3) used in telescopic boom bodies (2, 3, 4, 5, 6) are created so as to have different • material thicknesses on the boom body (2, 3, 4, 5, 6) where each of them is used. Therefore, the own weights of telescopic boom bodies (2, 3, 4, 5, 6) are created in the most appropriate manner with regards to the maximum load to be lifted and the telescopic boom crane is enabled to be used in the most effective manner.
- the resistance values required on the body (1 , 2, 3, 4, 5, 6) are satisfied by using parts having different material thicknesses and the boom bodies (1 , 2, 3, 4, 5, 6) are provided with the highest resistance.
- the amount of the load to be lifted is increased up to the highest level thanks to the boom bodies (1 , 2, 3, 4, 5, 6), which have the highest resistance and the own weight of which is not increased more than the required.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The present invention relates to a boom structure and boom profile section for telescopic boom cranes. It comprises a main boom body (1) having two upper parts (1.1, 1.2) and one lower part (1.3), a first telescopic boom body (2) having one upper part (2.1) and two lower parts (2.2, 2.3), a second telescopic boom body (3) having two upper parts (3.1, 3.2) and two lower parts (3.3, 3.4), a third telescopic boom body (4) having one upper part (4.1) and two lower parts (4.2, 4.3), a fourth telescopic boom body (5) having two upper parts (5.1, 5.2) and two lower parts (5.3, 5.4), and a fifth boom body (6) having two upper parts (6.1, 6.2) and one lower part (6.3). Said parts are of different thickness to achieve a boom structure and boom profile section having a high efficiency and high mechanic resistance.
Description
DESCRIPTION
TELESCOPIC BOOM OF HIGH EFFICIENCY FOR CRANES
TECHNICAL FIELD
The present invention is related to boom structure and boom profile section enabling the telescopic booms to lift loads with high efficiency and to have high resistance in the telescopic boom crane systems. Efficiency in lifting load is achieved by using materials having different thickness in the different areas of booms according to the present invention. Furthermore, the profile sections of booms are designed so as to provide high resistance.
PRIOR ART
Since the usage purpose of the telescopic booms used for lifting loads on the crane is to lift load, the structure of said booms and what kind of profile shape they have are of utmost importance. The telescopic boom structure is important in terms of the weight of the load to be lifted. The resistances of telescopic booms are adjusted in accordance with the weights of said loads and the structures thereof are created accordingly. Telescopic boom weights of a crane with fixed lifting capacity must be measured in a detailed manner. While designing the telescopic booms, the booms have minimum values that they have to include because of mechanic resistances thereof. In case of using materials with characteristics below said values, the safety of telescopic booms in lifting load is at risk. However, if a boom having material characteristics (material thickness, type of material, etc.) above the required values and having resistance higher than the standard is designed, the own weight of the boom increases and the weight of the maximum load that can be lifted by the crane is decreased. In addition, their profile sections are important in terms of boom resistance. Thus, profile sections of booms have appropriate measures. In order to obtain the highest efficiency from the crane system, the most suitable boom structure and boom profile section are required to be used.
BRIEF DESCRIPTION OF THE INVENTION
In order to perform the load lifting process with high efficiency and high mechanic resistance by means of telescopic boom cranes, boom structure and boom profile section providing high efficiency for telescopic boom cranes according to the present invention have been designed. Thanks to telescopic boom structure developed, the effect of the load lifted on each boom is calculated and the materials having different thicknesses are used on different areas on each boom body. Therefore, the own weights of the booms are created in the most appropriate value and the weight of the load to be lifted is increased up to the highest level. Moreover, the load transfer between the booms is calculated and the most appropriate section is obtained thanks to the boom profile section developed. Thus, the mechanic resistance of booms is increased, risks that may occur while using the crane are reduced and the usage life of the material is extended.
DESCRIPTION OF THE FIGURES
Figure 1. The overall view of telescopic booms
Figure 2. The overall view of main boom
Figure 3. The overall view of extension boom
Figure 4. 2. The overall view of extension boom
Figure 5. 3. The overall view of extension boom
Figure 6. 4. The overall view of extension boom
Figure 7. 5. The overall view of extension boom
Figure 8. The sectional view of telescopic booms
The equivalents of part numerals indicated in the figures are given below.
1. Main boom body
1.1. The upper part of main boom body
1.2. The upper part of main boom body
1.3. The lower part of main boom body
2. The first telescopic boom body
2.1.The upper part of the first telescopic boom body
2.2. The lower part of the first telescopic boom body
2.3. The lower part of the first telescopic boom body
3. The second telescopic boom body
3.1. The upper part of the second telescopic boom body
3.2. The upper part of the second telescopic boom body
3.3. The lower part of the second telescopic boom body
3.4. The lower part of the second telescopic boom body
4. The third telescopic boom body
4.1. The upper part of the third telescopic boom body
4.2. The lower part of the third telescopic boom body
4.3. The lower part of the third telescopic boom body
5. The fourth telescopic boom body
5.1.The upper part of the fourth telescopic boom body
5.2. The upper part of the fourth telescopic boom body
5.3. The lower part of the fourth telescopic boom body
5.4. The lower part of the fourth telescopic boom body
6. The fifth telescopic boom body
6.1. The upper part of the fifth telescopic boom body
6.2. The upper part of the fifth telescopic boom body
6.3. The lower part of the fifth telescopic boom body
A . The radius of the circular section of the upper edge of telescopic boom
L . Fixed Length
R1. The radius of the circular section of the lower edge of the fifth telescopic boom
R2. The radius of the circular section of the lower edge of the fourth telescopic boom
R3. The radius of the circular section of the lower edge of the third telescopic boom
R4. The radius of the circular section of the lower edge of the second telescopic boom
R5. The radius of the circular section of the lower edge of the first telescopic boom
R6. The radius of the circular section of the lower edge of the main boom
DETAILED DESCRIPTION OF THE INVENTION
The boom structure and boom profile section for telescopic boom cranes according to the present invention comprises main boom body (1) having two upper parts (1.1 , 1.2) and one lower part (1.3), first telescopic boom body (2) having one upper part (2.1) and two lower parts (2.2, 2.3), second telescopic boom body (3) having two upper parts (3.1, 3.2) and two lower parts (3.3, 3.4), third telescopic boom body (4) having one upper part (4.1) and two lower parts (4.2, 4.3), fourth telescopic boom body (5) having two upper parts (5.1 , 5.2) and two lower parts (5.3, 5.4), and fifth boom body (6) having two upper parts (6.1 , 6.2) and one lower part (6.3).
The circular sectional structures used at the upper edges of each main boom (1) and telescopic booms (2, 3, 4, 5, 6) developed have similar radius value (A) for each boom (1 , 2, 3, 4, 5, 6). In addition, the ones among the circular sectional structures used at the lower edges of each main boom (1) and telescopic booms (2, 3, 4, 5, 6) developed, which are included at the same edge, have common centers. The circular sections at the lower edges of the booms (1 , 2, 3, 4, 5, 6) have common centers with the radiuses R1 , R2, R3, R4, R5 and R6. For each boom (1 , 2, 3, 4, 5, 6), the length (L) of the portion with smooth surface, which remains between the circular sections used at the lower edges thereof, is created so as to be the same. The heights and widths of the booms (1 , 2, 3, 4, 5, 6) are determined in accordance with the types and thicknesses of the materials used in boom bodies (1 , 2, 3, 4, 5, 6) and created with the calculations. Therefore, the position of the circular sections used in the booms (1 , 2, 3, 4, 5, 6) whose heights and widths are determined becomes evident spontaneously. Thanks to the common circular sectional radius (A) used in the profile sections of booms (1 , 2, 3, 4, 5, 6) and the fact that circular sections with radiuses R1 , R2, R3, R4, R5, R6 are concentric, the tensions
occurring during the force transfer between the telescopic booms (2, 3, 4, 5, 6) are distributed appropriately over the boom profile structure. Thus, the tensions distributed appropriately are controlled easily and material resistances are increased.
In the boom structure according to the present invention, how much load is applied on which points of main boom body (1 ) and telescopic boom bodies (2, 3, 4, 5, 6) in accordance with the maximum load is calculated and different material thicknesses are used on different points on the boom bodies (1 , 2, 3, 4, 5, 6).
A separate plate (1 .1 ) at the front and another separate plate (1 .2) at the back are used at the upper section of main boom body (1 ). The upper parts (1 .1 , 1 .2) used here are created by using the same-typed material but different material thicknesses. The lower section of main boom body (1 ) is created from a whole plate (1.3). Again, the material thickness of said lower part (1 .3) is different from that of other parts (1 .1 , 1.2). The material thicknesses of the parts (1 .1 , 1 .2, 1 .3) creating the main boom body (1 ) and having different material thicknesses are calculated in accordance with the maximum load to be applied on the main boom body (1 ) and are created in such a manner that empty weight of the main boom body (1 ) will have the lowest amount and they will provide the body (1 ) with the highest resistance.
Similarly, the maximum load to be applied on each telescopic boom body (2, 3, 4, 5, 6) is calculated in the telescopic boom bodies (2, 3, 4, 5, 6) developed, and different material thicknesses are used in different areas. The first telescopic boom body (2) consists of one upper part (2.1 ) and two lower parts (2.2, 2.3). The second telescopic boom body (2) consists of two upper parts (3.1 , 3.2) and two lower parts (3.3, 3.4). The third telescopic boom body (4) consists of one upper part (4.1 ) and two lower parts (4.2, 4.3). The fourth telescopic boom body (5) consists of two upper parts (5.1 , 5.2) and two lower parts (5.3, 5.4). The fifth telescopic boom body (6) consists of two upper parts (6.1 , 6.2) and one lower part (6.3). The upper parts (2.1 , 3.1 , 3.2, 4.1 , 5.1 , 5.2, 6.1 , 6.2) and lower parts (2.2, 2.3, 3.3, 3.4, 4.2, 4.3, 5.3, 5.4, 6.3) used in telescopic boom bodies (2, 3, 4, 5, 6) are created so as to have different
• material thicknesses on the boom body (2, 3, 4, 5, 6) where each of them is used. Therefore, the own weights of telescopic boom bodies (2, 3, 4, 5, 6) are created in the most appropriate manner with regards to the maximum load to be lifted and the telescopic boom crane is enabled to be used in the most effective manner. In addition, thanks to the fact that separate materials with different thicknesses are used on the boom bodies (1 , 2, 3, 4, 5, 6), the resistance values required on the body (1 , 2, 3, 4, 5, 6) are satisfied by using parts having different material thicknesses and the boom bodies (1 , 2, 3, 4, 5, 6) are provided with the highest resistance. Thus, the amount of the load to be lifted is increased up to the highest level thanks to the boom bodies (1 , 2, 3, 4, 5, 6), which have the highest resistance and the own weight of which is not increased more than the required.
Claims
1. The boom structure and boom profile section for telescopic boom cranes, characterized in that it comprises main boom body (1 ) having two upper parts (1.1 , 1.2) and one lower part (1.3), first telescopic boom body (2) having one upper part (2.1 ) and two lower parts (2.2, 2.3), second telescopic boom body (3) having two upper parts (3.1 , 3.2) and two lower parts (3.3, 3.4), third telescopic boom body (4) having one upper part (4.1 ) and two lower parts (4.2, 4.3), fourth telescopic boom body (5) having two upper parts (5.1 , 5.2) and two lower parts (5.3, 5.4), and fifth boom body (6) having two upper parts (6.1 , 6.2) and one lower part (6.3).
2. Boom structure and boom profile section according to Claim 1 , characterized in that said main boom body (1) comprises two upper parts (1.1 , 1.2) and one lower part (1.3), each of which has different material thickness.
3. Boom structure and boom profile section according to Claim 1 , characterized in that said first telescopic boom body (2) comprises one upper part (2.1 ) and two lower parts (2.2, 2.3), each of which has different material thickness.
4. Boom structure and boom profile section according to Claim 1 , characterized in that said second telescopic boom body (3) comprises two upper parts (3.1 , 3.2) and two lower parts (3.3, 3.4), each of which has different material thickness.
5. Boom structure and boom profile section according to Claim 1 , characterized in that said third telescopic boom body (4) comprises one upper part (4.1) and two lower parts (4.2, 4.3), each of which has different material thickness.
6. Boom structure and boom profile section according to Claim 1 , characterized in that said fourth telescopic boom body (5) comprises two upper parts (5.1 , 5.2) and two lower parts (5.3, 5.4), each of which has different material thickness.
7. Boom structure and boom profile section according to Claim 1 , characterized in that said fifth boom body (6) comprises two upper parts (6.1 , 6.2) and one lower part (6.3), each of which has different material thickness.
8. Boom structure and boom profile section according to Claim 1 , characterized in that the circular sectional structures used at the upper edges of each main boom (1) and telescopic booms (2, 3, 4, 5, 6) have similar radius value (A) for each boom (1 , 2, 3, 4, 5, 6).
9. Boom structure and boom profile section according to Claim 1 , characterized in that the ones among the circular sectional structures used at the lower edges of each main boom (1) and telescopic booms (2, 3, 4, 5, 6), which are included at the same edge, have common centers.
10. Boom structure and boom profile section according to Claim 1 , characterized in that the length (L) of the portion with smooth surface, which remains between the circular sections used at the lower edges of said main boom (1) and telescopic booms (2, 3, 4, 5, 6) is created so as to be the same.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR201213054 | 2012-11-13 | ||
| PCT/TR2013/000338 WO2014077791A1 (en) | 2012-11-13 | 2013-11-04 | Telescopic boom of high efficiency for cranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2920104A1 true EP2920104A1 (en) | 2015-09-23 |
Family
ID=49759521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13803307.1A Withdrawn EP2920104A1 (en) | 2012-11-13 | 2013-11-04 | Telescopic boom of high efficiency for cranes |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2920104A1 (en) |
| WO (1) | WO2014077791A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865328A (en) * | 1993-06-16 | 1999-02-02 | Ec Engineering + Consulting Spezialmaschinen Gmbh | Telescopic boom |
| DE19624312C2 (en) * | 1996-06-18 | 2000-05-31 | Grove Us Llc | Telescopic boom for mobile cranes |
| DE19641191A1 (en) * | 1996-09-24 | 1998-03-26 | Mannesmann Ag | Telescopic jib for stationary or mobile cranes |
| JP4076191B2 (en) * | 1998-04-27 | 2008-04-16 | 株式会社タダノ | Mobile crane boom telescopic mechanism |
| WO2007052339A1 (en) * | 2005-11-01 | 2007-05-10 | Kato Works Co., Ltd. | Boom telescoping device for crane |
| JP4862416B2 (en) * | 2006-02-07 | 2012-01-25 | コベルコクレーン株式会社 | Telescopic boom |
-
2013
- 2013-11-04 EP EP13803307.1A patent/EP2920104A1/en not_active Withdrawn
- 2013-11-04 WO PCT/TR2013/000338 patent/WO2014077791A1/en active Application Filing
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014077791A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014077791A1 (en) | 2014-05-22 |
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