JPS62285897A - Method of changing direction of travelling of crane, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for converting the traveling direction of a crane traveling on a rail to a substantially right angle.

[Conventional technology] Container cranes are generally installed on quays.

When an unloader, a jib crane, etc. (hereinafter referred to as a crane, etc.) is perpendicular to a quay, it is necessary to travel along the perpendicular angle. However, in the case of a crane or the like that travels on rails, even if the rails are simply bent at right angles, it is difficult to travel along the right angle rails. Therefore, in the past, as a method for moving a crane or the like at right angles, a curved running method using curved rails or a turntable method using a turntable (Japanese Utility Model Publication No. 114179/1983) was adopted. .

[Problems to be solved by 1 Ming] However, in the above-mentioned curved traveling system, there was a problem that the radius of the curve became large and the dead space at the right angle part of the quay increased. Furthermore, if the radius of the curve is made smaller, the rail gauge will change in a complicated manner, making it difficult to lay the rails.

On the other hand, in the case of the turntable method, the device is a large type.
The problem was that it was not economically viable.

Therefore, the present invention was made to solve the problems of the prior art, and its purpose is to make it possible to easily run a crane, etc. along a substantially right angle, to eliminate the dead space at the right angle part of the quay, and to eliminate the dead space at the right angle part of the quay. It is easy to install
The object of the present invention is to provide an economical method for changing driving directions such as lanes, which can reduce the size and weight of the device.

[Means for Solving the Problems] The present invention provides a method in which, when the traveling direction of a crane or the like traveling on a rail is changed to a substantially right angle, the outer wheel side of the crane or the like is supported on the rail and moved. The inner ring side is lifted up from the rail by jacking up and supported while moving on the rolling elements.

[Function 1: If the radius of the curve is made small, the inner rail will have a complicated shape, making it difficult to install and run.

Therefore, we decided to jack up the inner ring side of the crane and move it on the rolling elements, so when the radius of the curve is made smaller, there is no need for a complicated inner rail, and the crane can be moved without using a turntable. It is possible to easily change the running direction of the vehicle to approximately perpendicular direction.

[Example 1] An example of the present invention will be described below in detail with reference to the accompanying drawings.

1 and 2, reference numeral 1 is a container crane, which has horizontal connecting bridges 3 along the traveling direction on both sides of the lower part of its leg parts 2, and two lower end parts of the double-speed structure 3, respectively. Wheels 7 are attached via a large rocker beam 4, a middle rocker beam 5, and a small rocker beam 6, which can be rotated horizontally.

In order to change the running direction of the crane 1 along the quay 8 perpendicular to the plane, the following procedure is adopted. Above wheel 7
The rail 9 that guides is laid approximately at right angles along the quay 8. In particular, as shown in FIG. crossed at right angles. When the outer wheel 7 on the quay 8 side is moved along the curve of the outer rail 9a, the rotation centers io and 1i of the front and rear large rocker beams 4 on the inner wheel side are located inside the inner rail 9b as shown in FIG. Draw a symmetrical locus 12.13 as shown in - Inner ring side connecting rope 3
The central portion 14 of 2 draws an asymptotic locus 15 on the outside of the inner rail 9b. Therefore, when the crane 1 travels around a curve, the outer wheel 7 is moved along the outer rail 9a, while the center portion 14 of the inner link rope 3 is supported by jacking up and moved along its trajectory 15. Ba,
There is no need to lay the inner rail 9b in a complicated shape such as the trajectory 12, 13, and the traveling direction can be easily changed. Therefore, in order to facilitate the movement of the jacked-up portion, steel balls are used as the rolling elements 16, and the movement range of the steel balls 16 is limited to a small range W near the inner rail intersection 17. In this range W, as shown in FIGS. 4 and 5, a support stand 18 is installed which houses a large number of steel balls 16 substantially uniformly on its upper surface.

In order to jack up the central portion 14 of the inner ring side connecting rope 3, the actuating body 19 is attached to the central portion 14 of the connecting bridge 3.
A jack 19 is provided with the end a facing downward and retractable, and the actuating body 19a is lowered onto the steel ball 16 on the support base 18 to jack it up. The upper edge 20 of the support base 18 is formed to stand up to prevent the steel balls 16 from falling, and at both ends there are steel balls 16 that move following the movement of the actuating body 19a. A guide surface 20a is formed that sends the material back to the rear.

One jack is located at one end E of the support base 18 to guide the inner ring side bamboo ring 7a until the jack is jacked up, and a jack 19 is located at the other end F of the support base 18 to guide the inner ring after the jack 1r is jacked down. In order to guide the side rear wheels 7b, auxiliary rails 21 and 22 are extended by a predetermined length from the intersection 17 of the inner rail 9b along the aforementioned trajectories 12 and 13, respectively.

In the above configuration, first, the crane 1 is
9 is moved to the G position located at -Pa E of the support stand 18. Next is Ji1? One operating body 19a is seated on the steel ball 16 on the support stand 18, and the inner wheel side of the crane 1 is jacked up, and the inner wheel 7 is floated from the auxiliary rail 21 and the inner rail 9b. When the outer wheels 7 start traveling in such a state, the outer wheels 7 move along the outer rails 9a, while the operating body 19a of the gear 17 moves on the steel ball 16, causing the crane 1 to move. The direction will be changed to the H position. When the jack 19 reaches the other end F of the support base 18, the inner wheel side of the crane 1 is jacked down by pulling up the operating body 19a, and the inner wheel 7 is supported on the inner rail 9b and the auxiliary rail 22. good.

In this way, the outer wheel 7 of the crane 1 is connected to the outer rail 9.
a, and the inner ring side is raised and supported by jacking up while moving on the steel balls 16, which are rolling elements, so that when the radius of the curve is made small, the inner rail 9b with a complicated shape can be moved. This is not necessary, and the traveling direction of the crane 1 can be easily changed to a substantially right angle without using a turntable.

Note that the rolling elements may be rollers. Moreover, the crane 1 may be an unloader or the like.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

(1) The outer ring side of the crane, etc. is supported on the rail and moved, and the inner ring side is lifted off the rail by jacking up and supported while moving on the rolling elements, so the radius of the curve can be made smaller. Also, there is no need for an inner rail with a complicated shape, and the traveling direction of a crane or the like can be easily changed to a substantially right angle without using a turntable.

(2) Therefore, the dead space can be reduced, the rails can be easily laid, and unlike the turntable method, the device can be made smaller, and the cost can be reduced by 1.

[Brief explanation of drawings]

Fig. 1 is a front view of the crane for explaining the method of the present invention, Fig. 2 is a view taken along arrow A-A in Fig. 1, Fig. 3 is a plan view without showing the rails and movement trajectory, and Fig. 4 is a crane. Enlarged view of the part,
FIG. 5 is a view taken from arrow B=8 in FIG. 4. In the figure, 1 is a crane, 9 is a rail, 16 is a steel ball that is a rolling element, and 1 is a jack. Patent applicant: Ishikawajima Harima Heavy Industries Co., Ltd. Representative Patent Attorney Nobuo Kinuya Figure 3

Claims (1)

[Claims] When changing the traveling direction of a crane, etc. running on a rail to a substantially right angle, the outer wheel side of the crane, etc. is supported on the rail and moved, and the inner wheel side is raised above the rail by jacking up and supported while rolling. A method for changing the running direction of a crane, etc., characterized in that it moves over a moving body.