ES201333U - Grua automontable pantograph type. (Machine-translation by Google Translate, not legally binding) - Google Patents
Grua automontable pantograph type. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES201333U ES201333U ES0201333U ES201333U ES201333U ES 201333 U ES201333 U ES 201333U ES 0201333 U ES0201333 U ES 0201333U ES 201333 U ES201333 U ES 201333U ES 201333 U ES201333 U ES 201333U
- Authority
- ES
- Spain
- Prior art keywords
- parallelograms
- levers
- arm
- tower
- free end
- 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
- 230000000284 resting effect Effects 0.000 abstract 1
Landscapes
- Jib Cranes (AREA)
Abstract
Self-adjusting pantograph-type crane, comprising a base, a tower resting on said base, and an arm or pen attached to the upper end of the tower, the crane itself being provided with at least one counterweight and being characterized in that said base comprises at least two rails, each of them formed by at least two rail sections, coupled together in aligned position and with their ends juxtaposed; because the tower comprises at least two pairs of levers juxtaposed to each other and in parallel planes, said levers being articulated to each other at their ends and at intermediate points, in order to provide at least two sets of articulated parallelograms; because at the free end of at least one of the lower levers of each parallelogram there is disposed a roller that rests and slides on one of said rails, while the other free end of the other lower lever can rotate on an axis substantially horizontal; because drive means capable of acting on said parallelograms are provided, in order to control the movement of approaching them to each other by means of the free ends of the lower levers in each of said parallelograms, thereby the height of the tower can be varied; because the arm or pen is articulated to the free end of one of the upper levers of each of the parallelograms; and in that the free end of the other upper end of each of the parallelograms carries a roller on which a rail that forms part of the said arm or boom of the crane rests and slides, providing a support strap for said arm that connects this one with the base through at least one brace. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES1974201333U ES201333Y (en) | 1974-03-09 | 1974-03-09 | SELF-ASSEMBLING CRANE TYPE PANTOGRAPH. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES1974201333U ES201333Y (en) | 1974-03-09 | 1974-03-09 | SELF-ASSEMBLING CRANE TYPE PANTOGRAPH. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES201333U true ES201333U (en) | 1976-01-01 |
| ES201333Y ES201333Y (en) | 1976-04-16 |
Family
ID=8368625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES1974201333U Expired ES201333Y (en) | 1974-03-09 | 1974-03-09 | SELF-ASSEMBLING CRANE TYPE PANTOGRAPH. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES201333Y (en) |
-
1974
- 1974-03-09 ES ES1974201333U patent/ES201333Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES201333Y (en) | 1976-04-16 |
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