DE444147C - Jib crane - Google Patents
Jib craneInfo
- Publication number
- DE444147C DE444147C DES69861D DES0069861D DE444147C DE 444147 C DE444147 C DE 444147C DE S69861 D DES69861 D DE S69861D DE S0069861 D DES0069861 D DE S0069861D DE 444147 C DE444147 C DE 444147C
- Authority
- DE
- Germany
- Prior art keywords
- boom
- jib
- jib crane
- load
- crane
- 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.)
- Expired
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
- B66C23/18—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0321—Travelling cranes
- B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Description
Es sind Auslegerkrane bekannt geworden, bei welchen der Ausleger zur Erzielung einer senkrechten Lastbewegung zugleich, gehoben und gewippt wird. Dies geschieht z. B. dadurch, daß der Auslegerfuß auf einer geneigten Zahnstange verschoben wird, während ein Ansatz des Auslegerfußes auf einer entsprechend geformten Bahn entlang gleitet. Die dem Erfindungsgedanken zugrunde liegende Aufgäbe besteht darin; die Bauhöhe und -länge derartiger Auslegerkrane möglichst klein zu halten, um ein einfaches und billiges, für alle möglichen Zwecke verwendbares Hebezeug zu schaffen.There are jib cranes are known in which the boom to achieve a vertical load movement at the same time, is lifted and luffed. This happens e.g. B. by that the boom is moved on an inclined rack, while an approach of the boom on a corresponding slides along the shaped path. The task underlying the idea of the invention consists in; the overall height and length of such jib cranes to be as small as possible hold to a simple and cheap hoist that can be used for all sorts of purposes create.
Dies wird gemäß der Erfindung dadurch erreicht, daß als Hub- und Wippmittel für den Ausleger eine Schere benutzt wird, deren kurzer Schenkel gelenkig mit dem Auslege? verbunden ist, und dessen langer Arm am Ausleger entlang gleitet. Es zeigen:This is achieved according to the invention in that as a lifting and rocking means for the Jib a pair of scissors is used whose short legs are articulated with the jib? is connected, and the long arm slides along the boom. Show it:
Abb. ι den Kran ohne Seil und niedriger Laststellung,Fig. Ι the crane without rope and low load position,
Abb. 2 den Kran mit Lastseil, aber ohne Winde und in mittlerer Laststellung,Fig. 2 the crane with the load rope, but without a winch and in the middle load position,
Abb. 3 den Kran mit Seil und Winde und höchster Laststellung.Fig. 3 the crane with rope and winch and highest load position.
Durch Verkleinerung oder Vergrößerung der Entfernung des Fußptmktes des Armes α vomBy reducing or increasing the distance of the foot point of the arm α from the
unteren Gelenkpunkt des Armes b wird der Ausleger d gehoben oder gesenkt, da der Ausleger ύί mit dem kurzen Scherenarm e bei h gelenkig verbunden ist und der lange Schenkelc mit Rolle/ an der unteren Fläche des Auslegers entlang gleitet.lower pivot point of arm b , boom d is raised or lowered because boom ύί is articulated to short scissor arm e at h and long leg c with roller / slides along the lower surface of the boom.
Durch die iVnordnung der Gleitvorrichtung / am langen Schenkeln ist erreicht, daß der Ausleger d in seiner wagerechten Stellung,The arrangement of the sliding device / on the long legs ensures that the boom d is in its horizontal position,
ίο wobei er stark auf Biegung beansprucht ist, gestützt wird.ίο where it is heavily stressed in bending, is supported.
Damit der Ausleger nicht zu Boden gesenkt werden muß, um die Last aufzunehmen, kann bei Punkt g (Abb. 2) ein Lastseil befestigt werden, welches über die Rollen« und i hinweg zur Last geführt wird. 'Diese Anordnung bewirkt selbsttätig eine Verkürzung des. von Rolle / herabhängenden Seilendes beim Heben des Auslegers.So that the boom does not have to be lowered to the ground in order to take up the load, a load rope can be attached at point g (Fig. 2), which is led to the load via the pulleys «and i. This arrangement automatically shortens the rope end hanging from the pulley / rope when the boom is raised.
Auch, kann bei Punkt g eine Winde (Abb. 3) angebracht werden, wenn der Kran z. B. benutzt werden soll, um Lasten in Schächte abzusenken oder daraus herauszufordern. In diesem Falle übernimmt das Windwerk wie bei den anderen Kranen die Förderung der Last, und das Scherwerk dient lediglich zur Einstellung der Höhe des Auslegers.Also, a winch (Fig. 3) can be attached at point g, if the crane z. B. should be used to lower loads in manholes or to challenge them. In this case, as with the other cranes, the winch takes over the transport of the load, and the shear mechanism is only used to adjust the height of the boom.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES69861D DE444147C (en) | 1925-05-02 | 1925-05-02 | Jib crane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES69861D DE444147C (en) | 1925-05-02 | 1925-05-02 | Jib crane |
Publications (1)
Publication Number | Publication Date |
---|---|
DE444147C true DE444147C (en) | 1927-05-11 |
Family
ID=7501289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES69861D Expired DE444147C (en) | 1925-05-02 | 1925-05-02 | Jib crane |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE444147C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2759058A1 (en) * | 1977-01-12 | 1978-07-13 | Smith Jun | DEVICE FOR LIFTING AND LOWERING LOADS |
DE2843587A1 (en) | 1977-10-05 | 1979-04-12 | Smith Jun | LIFT WITH BOOM |
-
1925
- 1925-05-02 DE DES69861D patent/DE444147C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2759058A1 (en) * | 1977-01-12 | 1978-07-13 | Smith Jun | DEVICE FOR LIFTING AND LOWERING LOADS |
DE2843587A1 (en) | 1977-10-05 | 1979-04-12 | Smith Jun | LIFT WITH BOOM |
DE2857563C2 (en) * | 1977-10-05 | 1986-12-18 | Lift-A-Loft Corp., Muncie, Ind. | Mobile lifting device |
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