JPS63140617A - Collector - 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 [Industrial Field of Application] The present invention relates to a current collector for a bogie running on a horizontal frame such as a girder of a ship's cargo handling equipment.

[Prior Art] As a current collector for a cart reciprocated on a horizontal frame such as a girder, a horizontal beam installed along the horizontal frame, a plurality of carriers movably suspended on the beam, Some devices include a current collecting arm hanging down from the truck, and a power cable suspended and supported by the arm and the carrier, respectively.

FIG. 4 is a side view showing the configuration of such a conventional current collector. Reference numeral 10 denotes a horizontal frame, on the lower side of which a horizontal beam 12 for suspending a carrier is attached via a stay 14. A plurality of (six in this embodiment) carriers 14 (148 to 14f) are movably suspended on this beam 12.

A truck 16 is provided on the horizontal frame 10 so as to be reciprocated on the upper side thereof, and a current collecting arm 18 is suspended from the truck 16, and this current collecting arm 18 is connected to the carrier 14a.
is connected to. The carriers 14a to 14f are connected via wire lobes 20, and the carrier 14f that is furthest away from the truck 16 is connected to an end carrier 22 provided at one end of the horizontal beam 12 via a wire lobe 20.
are connected via. A power cable 24 is stretched between the current collecting arm 18 and the end carrier 22, and a midway portion of the power cable 24 is supported by each of the carriers 14a to 14f.

In the current collector configured in this manner, when the cart 16 moves toward the most distal end of the horizontal frame 10, the carriers 14a to 14f are lined up at equal intervals, and the power cable 24 is in the most extended state.

When the cart 16 moves eight times in the right direction B in the drawing from this most extreme position, it is sequentially moved in the B direction from the leftmost carrier 14a by the current collecting arm 18. That is, the carrier 14a first collides with the carrier 14b and moves further in the direction B while pushing it (the state shown in FIG. 4), and then sequentially pushes the carriers 14c, 14d, and 14e, and eventually the cart 16 moves to the rightmost position in the figure. Move to the retreat position and stop.

In the most retracted position of this truck 16, the carrier 14e
has collided with the carrier 14f.

When the cart 16 moves toward the tip from this most retracted position, the carrier 14a first separates from the carrier 14b and advances a predetermined distance, and then the wire lobes 20 bow the carrier 14b, causing the carrier 14b to also move. After that, the carriers 14c, 14d, and 14e also move sequentially, and when the cart 16 has moved to the most extreme position, the carrier 14f is also pulled by the carrier 14e by the wire lobe 20.

[Problems to be Solved by the Invention] The above current collector has a problem in that the i-blow applied to the carrier 14f becomes large. That is,
When the truck 16 has moved to the most retracted position, the carriers 14a to 14e are integrated into the carrier 14f.
As a result, an extremely large impact load is applied to the carrier 14f.

Furthermore, when the trolley 16 moves to the most extreme position, the inertial force of movement in the direction of the leading edge of each of the carriers 14a to 14e is applied to the carrier 14f at once via the lobe 20, and the carrier 14f is also subjected to a considerable impact. Such a large impact load causes a decrease in the durability of the carrier.

[Means for Solving the Problems] The current collector of the present invention is a current collector in which a power cable is suspended by a plurality of carriers, in which a carrier disposed farthest from the trolley is selected from among the carriers. The present invention is characterized in that the carrier is fixed to a horizontal frame or a horizontal beam via a shock absorbing device that buffers the impact in the longitudinal direction of the horizontal beam for suspending the carrier.

[Operations] In the current collector of the present invention, the impact load applied to the cart that is placed farthest from the cart is reduced by the shock absorbing device, thereby increasing the durability of the carrier.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing the configuration of an apparatus according to an embodiment of the present invention. In the current collector according to this embodiment, a tower 25 is erected on the rear end side of the horizontal frame, and a sheave 26 is installed above the carrier 14f furthest away from the cart 16. A sheave 28 is also provided at the top of the tower 25, and an appropriate number of sheaves 30 are provided between the sheaves 26 and 28.
These sheaves 26 to 30 are provided with wire lobes 32. One end of the wire lobe 32 is connected to the carrier 14f, and a weight 34 is attached to the other end of the wire lobe 32.

Further, the wire lobe 20 that connects the carrier 14f and the end carrier 22 is connected to the end carrier 22 via a spring 36.

The rest of the configuration is the same as that in FIG. 4, so the same members are given the same reference numerals and their explanations will be omitted.

In the current collector configured as described above, the operation when the trolley 16 moves from the most extreme position to the retracted position will first be described. In this case, the carriers 14a to 14e are sequentially pushed by the arm 18 and moved to the right, and each carrier 14a to 14e finally collides with the carrier 14f. At this time, the carrier 14f tries to move to the right in the figure, but the carrier 14f is connected to the weight 34 via the wire lobe 32, and as shown in FIG.
The pulling force acts as a biasing force to the left on the carrier 14f, and the impact applied to the carrier 14f is alleviated by this biasing force. In the state shown in FIG. 2, the carrier 14f is then moved leftward by the urging force of the weight 34 to a position where it contacts the carrier 14e.

Next, a state in which the cart 16 protrudes to the most extreme position will be described with reference to FIG. 3. In this case, the carriers 14a to 14f are in a state where they are most separated and spread out, but when the cart 16 moves to the most extreme position, the leftward movement inertia of each carrier 14a to 14e causes the wire lobe to move. 20 and are all added to the carrier 14f. However, in this embodiment, the carrier 14
Wire lobe 20 connecting f and end carrier 22
Since a spring 36 is provided at
ailE added to f will be relaxed.

In addition, in the above example? # Although the weight 34 and the spring 36 are used as the shock absorbing device, the present invention may also use various other shock absorbing means.

[Effects of the Invention] As is clear from the above explanation, according to the present invention, the impact force applied to the carrier is alleviated, the durability of the carrier is improved, and the life of the current collector as a whole can be extended. Become.

[Brief explanation of the drawing]

Figure 1 is a side view of an embodiment of the device of the present invention, Figures 2 and 3 are
The figure is an enlarged view of a main part explaining the operation of the device, and FIG. 4 is a side view of a conventional example. 10...Horizontal frame, 12...Horizontal beam,
14a to 14f...Carrier, 16...Dolly, 18...Collection arm,
26.28.30... Sheave, 32... Wire robe, 34... Weight.

Claims (2)

[Claims] (1) A current collector for a trolley that reciprocates on a horizontal frame, which includes a horizontal beam for suspending carriers installed along the horizontal frame, and a plurality of carriers movably suspended on the beam. , comprising a current collecting arm hanging vertically from the trolley, and a power cable suspended and supported by the arm and the carrier, respectively, the carrier being disposed farthest from the trolley among the carriers; What is claimed is: 1. A current collector, wherein the current collector is fixed to a horizontal frame or a horizontal beam via a buffer device that buffers shocks in the longitudinal direction of the beam. (2) The buffer device includes a tower erected on a horizontal frame, a sheave provided at the top of the tower, and a sheave located above the carrier that is farthest from the trolley;
2. The current collector according to claim 1, comprising: a rope that is placed over each sheave and has one end connected to the carrier; and a weight that has the other end connected to the rope.