JP2001520158A - Crane truck with additional driver cage - Google Patents

Abstract

(57) Abstract: A mobile crane with a telescopic boom having a plurality of telescoping sections and terminating at a last telescoping section to which a derrick mast can be mounted comprises a crane operator cage that can be mounted at the last telescoping section. Crane operation allows the crane operator to clearly monitor the work area of the derrick mast by controlling from the cage.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a mobile crane having a telescopic boom constituted by a plurality of telescopic parts.

This type of mobile crane by Compact Truck AG is known on the market and is mainly used in the construction industry. This type of crane truck is equipped with a crane cab, from which both crane and driving operations can be performed.

[0003] Since the crane cab is located on the crane truck, the cab is located substantially at ground level. As a result, many applications that are standard in the building and construction business cannot be performed by this type of mobile crane. All operations that occur, for example, behind the roof edge of a building or during excavation cannot be performed because the crane operator, located approximately at ground level in the cab, cannot monitor the working area of the boom. This problem especially hinders the use of derrick masts to extend the boom.

Accordingly, it is an object of the present invention to provide an apparatus that can better monitor the working area of a boom.

[0005] This object is achieved for a mobile crane with a telescopic boom by the features indicated in the characterizing part of claim 1.

An advantage that can be achieved with the present invention is that control of the crane operation is separated from control of the driving operation by the use of a crane operator cage additionally mounted on the boom. Upon operation of the crane, the crane operator cage is no longer located near the ground and is located at a higher local level that provides visual access to the crane operator for areas that cannot be monitored from the ground, such as the roof of a building. Operations such as behind the edge, behind a correspondingly high wall or excavation can be performed. further,
This type of driver cage offers improved usability when using derrick masts.

According to a preferred embodiment of the present invention, it is also possible to control the derrick mast that can be mounted on the boom from the crane operator's cage.

[0008] Further according to a preferred embodiment of the present invention, the crane operator's cage can be mounted on the last telescopic part of the boom.

[0009] Further according to a preferred embodiment of the present invention, the derrick mast can be mounted on the last telescopic part of the boom.

According to another preferred embodiment of the present invention, the crane operator's cage is mounted on the telescopic part so as to be pivotable about a horizontal axis.

[0011] Further in accordance with a preferred embodiment of the present invention, the crane operator's cage includes a device for maintaining the cage in a horizontal position by tilting the telescopic boom.

Finally, according to an embodiment of the present invention, the crane operator cage comprises means for remote controlling the crane vehicle.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 shows a crane truck with lateral supports extended on both sides. A crane cab 1 partially concealed by a telescopic and laterally swiveling boom 2 in FIG. From the cab 1, the crane truck is controlled for driving operation on the road. The crane operator's cage 3 is mounted on the last part of the telescopic part 4 in the retracted state. Following the driver's cage 3 is a derrick mast 5 which is also in a retracted state, which is connected to the last telescopic part of the boom 2 like the driver's cage 3. A derrick mast is used to achieve a higher operating level of the crane whenever the operating level of the telescopic boom is not sufficient for a given application. In this embodiment, both the derrick mast and the driver's cage are fixed by bolt connections, which connections are therefore releasable or separable. Other releasable types of connections as well as connections that cannot be released are possible. In addition, driver cage 3 and derrick mast 5
Can form a tightly connected unit, which is mounted on the boom 2. As can be seen from FIG. 1, the telescopic boom 2 with the retracted telescopic part 4 is located near the ground. In this position, the driver cage and derrick mast are mounted on the last telescopic part of the telescopic boom. For example, at a construction site, the driver's cage 3 can be moved to the boom 2, for example by a forklift truck, raised to a precise position and then bolted to the last telescopic part of the boom 2. The same procedure is possible for the derrick mast 5. The separate mounting of the driver cage 3 and the derrick mast 5 on the boom 2 makes it possible to operate a boom having the driver cage 3 and the derrick mast 5 or having only the driver cage 3.

When the driver cage 3 is mounted on the boom 2 as shown in FIG. 1, the crane operator moves from the cab 1 which is firmly connected to the crane truck to the cage 3 mounted on the boom 2. At the same time, it moves upward and sits on the cage 3. For this purpose, the driver cage 3 is provided with the means required for remote control of the crane, in particular the boom 2 and the derrick mast 5.

As can be seen in FIG. 2, the driver cage 3 is closer to the working area of the derrick mast 5 than the cab 1. That is, direct monitoring of the work performed by the derrick mast 5, accurate guidance of the crane hook 6, and safe operation by the derrick mast 5 are ensured. On the other hand, the exposed position of the driver cage 3 shown in FIG. 2 gives the crane operator sitting on the cage 3 a clear view of the construction area, which is not visible from the cab 1 arranged on the crane truck. . The driver's cage includes a device that keeps the cage in a horizontal position as the angular position of the boom is changing. After the work,
The crane operator can move the main boom to a ground position and remove and transport the cage and derrick mast.

[Brief description of the drawings]

FIG. 1 is a side view of a crane operator cage mounted on the last telescoping section of a boom with a derrick mast and the boom retracted to a position near the ground.

FIG. 2 is a side view of a crane operator cage mounted on a boom with a derrick mast and the boom is in an operating position.

[Procedural Amendment] Submission of translation of Article 34 Amendment of the Patent Cooperation Treaty

[Submission date] April 12, 2000 (2000.4.12)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F205 AA05 AC01 BA01 CA03 CB02 DA04 KA10

Claims (7)

[Claims] 1. A crane equipped with a telescopic boom (2) including a plurality of telescoping parts, a crane operator cage (3) capable of monitoring a working area of the boom (2).
) Can be mounted on the boom (2) to control the operation of the crane. 2. The mobile crane according to claim 1, wherein a derrick mast (5) mountable on the boom (2) is also controllable from the driver cage (3). 3. The mobile crane according to claim 1, wherein the driver cage (3) is attachable to a last telescopic part of the boom (2). 4. The mobile crane as claimed in claim 1, wherein the derrick mast (5) is freely attachable to the last telescopic part of the boom (2). 5. The mobile crane according to claim 1, wherein the driver cage is pivotable about a horizontal axis. 6. The crane according to claim 5, wherein the driver cage (3) comprises a device for keeping the driver cage (3) in a horizontal position by tilting the telescopic boom (2). car. 7. The mobile crane according to claim 1, wherein the driver cage (3) comprises means for remote controlling the mobile crane.