GB2149750A - Improvements in mobile cranes - Google Patents
Improvements in mobile cranes Download PDFInfo
- Publication number
- GB2149750A GB2149750A GB08428345A GB8428345A GB2149750A GB 2149750 A GB2149750 A GB 2149750A GB 08428345 A GB08428345 A GB 08428345A GB 8428345 A GB8428345 A GB 8428345A GB 2149750 A GB2149750 A GB 2149750A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crane
- upper carriage
- undercarriage
- mobile
- carriage
- 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.)
- Granted
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
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
-
- 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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
A mobile crane comprises an undercarriage 3 on which is supported an upper carriage. The upper carriage consists of separable front and rear parts 1 and 4. The front part bears the main jib and the rear part bears the counterweights 5 and stays. The carriage parts are connectable directly or by way of an interposable carriage spacer member 7. The detachable rear part is optionally supportable on an additional undercarriage 6. <IMAGE>
Description
SPECIFICATION
Improvement in mobile cranes
It is known for a mobile crane to have an undercarriage on which is supported an upper carriage bearing the main jib, counter-weights and stays for the jib. Although the undercarriage may be supported on wheels, endless tracks are used, for the undercarriage particularly if the crane has a high carrying power. However, the moments applied to the crane by the load can only be increased by changing the counter-weights. The load carrying ability of a mobile crane is therefore limited. On the other hand, a crane capable of accepting a heavy load occupies a very large space, and is inconvenient when used for lighter loads.
The present proposal is for a mobile crane design which can be used with lighter loads and, moreover, for heavier loads, with few modifications. To this end, the upper carriage is divided into front and rear parts which can be connected to each other directly so that the counterweights provide a small moment to counterbalance that of the load, or by way of a spacer so that the counterweights provide a larger counterbalance moment.
In this way, the distance between the front part bearing the jib and the rear part receiving the counterweights can be increased so that a larger machine which can take up higher moments is available for special loads whereas the mobile crane does not occupy an unacceptable amount of space in normal cases.
The drawing shows the proposed crane in the operating mode with the interposed spacer.
The proposed crane comprises a tracked undercarriage 3 on which is supported for rotation the front part of an upper carriage 1 bearing the main jib 2. The rear part 4 of the upper carriage is separable from the front part and supports the counteweights 5. The rear part may be cantilevered or placed on an additional mobile undercarriage 6, shown as a second tracked vehicle. The connection between the front part and rear part are made by a welded frame construction 7, as shown, provided with winches for optional use. The frame 7 is, when required, bolted or otherwise secured to the separable parts of the upper carriage. When not required, it may be transported on the vehicle 6.
It can easily be seen that this extension of the upper carriage enables the crane to take up substantially greater load moments, in which case, however, the entire machine requires more space.
For lighter loads, the front portion and rear portions are directly connected to each other, and the mobile crane requires only a small space and the counterweights are supported in cantilevered fashion. The vehicle 6 is not then required.
1. A mobile crane comprising an undercarriage on which is supported an upper carriage separable into front and rear parts, the front part bearing the main jib and the rear part bearing the counterweights, the carriage parts being connectable directly or by way of an interposable carriage spacer member, the detachable rear part being optionally supportable on an additional undercarriage.
2. A mobile crane according to claim 1, wherein the upper carriage spacer member consists of a welded frame structure provided with winches for optional use.
3. A mobile crane substantially as hereinbefore described with reference to the drawing.
4. For use in assembling a crane:
an undercarriage supporting a forward upper carriage part bearing a jib;
a rearward upper carriage part bearing a counterweight, and
a spacer;
the rearward upper carriage part being connectable with the forward part directly or though the intermediary of the spacer.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. A mobile crane comprising an undercarriage on which is supported an upper carriage separable into front and rear parts, the front part bearing the main jib and the rear part bearing the counterweights, the carriage parts being connectable directly or by way of an interposable carriage spacer member, the detachable rear part being optionally supportable on an additional undercarriage.
2. A mobile crane according to claim 1, wherein the upper carriage spacer member consists of a welded frame structure provided with winches for optional use.
3. A mobile crane substantially as hereinbefore described with reference to the drawing.
4. For use in assembling a crane:
an undercarriage supporting a forward upper carriage part bearing a jib;
a rearward upper carriage part bearing a counterweight, and
a spacer;
the rearward upper carriage part being connectable with the forward part directly or though the intermediary of the spacer.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833341049 DE3341049A1 (en) | 1983-11-12 | 1983-11-12 | MOBILE CRANE |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8428345D0 GB8428345D0 (en) | 1984-12-19 |
GB2149750A true GB2149750A (en) | 1985-06-19 |
GB2149750B GB2149750B (en) | 1987-01-07 |
Family
ID=6214217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08428345A Expired GB2149750B (en) | 1983-11-12 | 1984-11-09 | Improvements in mobile cranes |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS60118594A (en) |
DE (1) | DE3341049A1 (en) |
GB (1) | GB2149750B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8162160B2 (en) * | 2005-11-17 | 2012-04-24 | Terex Demag Gmbh | Modular counterweight carriage for cranes, in particular for large crane |
CN103318777A (en) * | 2012-03-23 | 2013-09-25 | 徐工集团工程机械股份有限公司 | Connection device for front vehicle and rear vehicle of super-tonnage crane and crane |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4953722A (en) * | 1988-11-09 | 1990-09-04 | The Manitowoc Company, Inc. | Crane and lift enhancing beam attachment with moveable counterweight |
FI118121B (en) | 2005-11-08 | 2007-07-13 | Mobimar Oy | Procedure for breaking ice, power-driven ship and its use |
WO2013033897A1 (en) * | 2011-09-07 | 2013-03-14 | 长沙中联重工科技发展股份有限公司 | Crane |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1291541A (en) * | 1971-03-31 | 1972-10-04 | Schermaschb Georgi Dimitroff V | A mobile crane including apparatus for mounting a counterweight on a slewing superstructure thereof |
GB1466686A (en) * | 1974-07-12 | 1977-03-09 | Riggers Mfg Co | Counter-balanced crane structure |
GB2050295A (en) * | 1979-05-25 | 1981-01-07 | Harnischfeger Corp | Auxiliary counterweight arrangement for mobile crane |
EP0048076A1 (en) * | 1980-08-18 | 1982-03-24 | AMERICAN HOIST & DERRICK COMPANY | Mobile crane structure |
GB2140772A (en) * | 1983-05-11 | 1984-12-05 | Kobe Steel Ltd | Crane with alternative operating arrangements |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2545307A1 (en) * | 1975-10-09 | 1977-04-14 | Bodo Toense | Mobile crane with slewing superstructure - has detachable intermediate piece between fixed and removable tail boom sections |
US4358021A (en) * | 1980-03-07 | 1982-11-09 | The Manitowoc Company, Inc. | Separated ring segment dual pivot lift crane |
-
1983
- 1983-11-12 DE DE19833341049 patent/DE3341049A1/en not_active Ceased
-
1984
- 1984-11-09 GB GB08428345A patent/GB2149750B/en not_active Expired
- 1984-11-12 JP JP23688984A patent/JPS60118594A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1291541A (en) * | 1971-03-31 | 1972-10-04 | Schermaschb Georgi Dimitroff V | A mobile crane including apparatus for mounting a counterweight on a slewing superstructure thereof |
GB1466686A (en) * | 1974-07-12 | 1977-03-09 | Riggers Mfg Co | Counter-balanced crane structure |
GB2050295A (en) * | 1979-05-25 | 1981-01-07 | Harnischfeger Corp | Auxiliary counterweight arrangement for mobile crane |
EP0048076A1 (en) * | 1980-08-18 | 1982-03-24 | AMERICAN HOIST & DERRICK COMPANY | Mobile crane structure |
GB2140772A (en) * | 1983-05-11 | 1984-12-05 | Kobe Steel Ltd | Crane with alternative operating arrangements |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8162160B2 (en) * | 2005-11-17 | 2012-04-24 | Terex Demag Gmbh | Modular counterweight carriage for cranes, in particular for large crane |
CN103318777A (en) * | 2012-03-23 | 2013-09-25 | 徐工集团工程机械股份有限公司 | Connection device for front vehicle and rear vehicle of super-tonnage crane and crane |
CN103318777B (en) * | 2012-03-23 | 2015-06-24 | 徐工集团工程机械股份有限公司 | Connection device for front vehicle and rear vehicle of super-tonnage crane and crane |
Also Published As
Publication number | Publication date |
---|---|
DE3341049A1 (en) | 1985-05-30 |
GB8428345D0 (en) | 1984-12-19 |
GB2149750B (en) | 1987-01-07 |
JPS60118594A (en) | 1985-06-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |