JPH04133996A - Operating room in wheel crane - Google Patents

Abstract

PURPOSE:To improve the left side and front visibilities in running on a public road and to enhance the workability of a crane by disposing an operating room on an upper turning body in such a manner as to be rotatable independently, providing a winch on a boom, and positioning the rotational center so that the extreme end and side surface of the operating room is within the vehicular width. CONSTITUTION:An operating room 4 is disposed on the side portion of an upper turning body 4 in such a manner as to be rotatable around the rotational center 12. A boom 1 and a jib 11 are positioned so as to be within a rotational radius R of a lower portion running body 5 in steering, and further a winch 20 provided on the jib 11 is positioned between the positions of the operating room 4 in running on the public road and in crane working. The rotational center 12 of the operating room is positioned such that the extreme end and the side surface of the operating room 4 are within the vehicular width W.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cab for a wheel crane.

(Prior Art) A known wheel crane is shown in FIGS. 4 and 5. Fourth
The figure shows the state of a known wheel crane when running on a public road.
Figure 5 shows the condition during crane work. 1 is a boom attached to the upper revolving structure 3.

The two-part revolving body 3 is attached to the undercarriage body 5 so as to be pivotable about the rotation center 2. 4 is a driver's cab attached to the upper revolving structure 3.

Such wheel cranes have the following problems because one fixed operator's cab 4 is used for traveling on public roads and for crane work.

■) The boom 1 is next to the driver's cab 4, reducing visibility on the left side.

2) Since the tip of the boom 1 is longer than the driver's cab 4, navigational visibility is narrow, and care must be taken to avoid movement of the tip of the boom when steering.

3) Since the front overbank is large, nose dive is large and dangerous when flaking.

4) When working with the crane, the tip of the operator's cab 4 will protrude beyond the width of the vehicle, so do not get too close to it.

5) Since the center of gravity is high, the width of the vehicle must be widened to ensure the tilting angle required by safety standards.

(Problems to be solved by the invention) In view of the problems of conventional wheel cranes, it is desirable to 1) improve visibility on the left side and the front when driving on public roads, and 2) put the driver's cab within the width of the vehicle during crane work, and improve the visibility of the crane. The purpose is to improve workability, and 3) to reduce vehicle width to improve running performance and narrow road entry performance.

(Means for solving the problem) In a wheel crane, the driver's cab was installed on the upper revolving body so that it could rotate independently.

A winch was installed on the boom, and was installed between each operator's cab when driving on public roads and when working with the crane.

In addition, the center of rotation of the driver's cab is positioned so that the tip and sides of the driver's cab fit inside the vehicle IJ when driving on public roads and during crane work.

(Example) An explanation will be given based on FIGS. 1 to 3. In the present invention, the operator's cab 4 is provided on the side of the upper revolving body 3, and the rotation center 12
It was mounted so that it could rotate independently around it.

As shown in FIG. 3, the boom 1 and jib 1 were positioned so that they would be within the rotation radius R of the lower traveling body 5 during steering of the front @7.

Furthermore, the winch 10 provided on the jib 1 is located between the operator's cab 4 when traveling on public roads and the operator's cab 4 when working with the crane.

Further, the rotation center 12 of the driver's cab is located at a position such that the tip and side of the driver's cab 4 are within the vehicle width W when traveling on public roads and when cleaning the vehicle.

(Effects) With this configuration, when driving on public roads, the driver's cab 4 can be positioned in the opposite direction to the tip of the boom 1 as shown in Figure 1, and the problems of poor visibility and nose dive are solved. Ru.

Further, as shown in FIG. 3, the tip of the driver's cab 4 can be placed inside the car 11W during crane work.

Furthermore, since there is no correlation between the boom 1 and the driver's cab 4 when driving on public roads, the boom 1 is lowered. As a result, the overall center of gravity is lowered, a margin is created for the tilting angle, and the vehicle width W can be reduced.

[Brief explanation of the drawing]

FIG. 1 shows the state of the present invention when running on a public road. FIG. 2 shows the crane of the present invention in operation. FIG. 3 is a plan view of the present invention. Figure 4 shows the state of a conventional wheel crane when running on a public road. Figure 5 is a diagram of the working posture of a conventional crane. In the figure: 1 Boom 2 Swing center 3 Upper rotating structure 4 M displacement 5 Lower traveling structure 6 Rear shaft 7 Front wheel 8 Wire rope 9 Hook
10 winch 11 jib 1
2 Rotation center W Vehicle width R Rotation radius 2"

Claims (3)

[Claims] (1) A driver's cab for a wheel crane, characterized in that the driver's cab (4) is installed on an upper revolving body so as to be able to rotate independently. (2) The operator's cab for a wheel crane according to claim 1, wherein the winch (10) is provided on the boom (1) and is provided between the respective operator's cab positions when traveling on a public road and during crane work. (3) The driver's cab for a wheel crane according to claim 1 or 2, wherein the center of rotation of the driver's cab is positioned so that the front end and side surfaces of the driver's cab fit within the width of the vehicle during traveling on public roads and crane operations.