JP2023063952A - Braking device of track traveling type machine - Google Patents

Abstract

To provide a braking device of a track traveling type machine capable of simplifying and miniaturizing a structure by reducing the number of component parts and of reducing cost.SOLUTION: A braking device 40 of a track traveling type machine (a container crane 10) includes an equalizer beam 32 on which traveling wheels 31 freely rolling along a traveling rail Rx are provided, and presses a brake pad 41, which is mounted on a lower surface of a pressing frame 43, against the traveling rail Rx to perform braking by telescopic operation of a fluid pressure cylinder 42 provided on the equalizer beam 32. The braking device includes: a support bracket 32b projected from a side surface of the equalizer beam 32 and mounted with the fluid pressure cylinder 42; and a cutout part 33 formed on a lower part of the equalizer beam 32 to be engaged with the pressing frame 43 and receiving horizontal force in the longitudinal direction of the traveling rail Rx acting on the pressing frame 43 in performing braking.SELECTED DRAWING: Figure 1

Description

The present invention relates to a braking device for a track-running machine.

Generally, as shown in FIG. 5, a container crane 10 as a track traveling machine arranged on a traveling rail Rx of a quay Q of a harbor H has a traveling rail Rx so as to connect the lower ends of the support legs 21 of the body frame 20. A traveling device 30 and a braking device 40 are provided on the lower frame 22 extending parallel to the .

The travel device 30 has travel wheels 31 that can freely roll along travel rails Rx, and is rotationally driven by a motor (not shown).

The braking device 40 performs braking by pressing a brake pad 41 against the running rail Rx.

A total of four support legs 21 are erected, two on the land side and two on the sea side. there is

A girder 50 extending horizontally from the land side to the sea side is provided on the upper portion of the body frame 20, and a boom 60 extending on the extension line is attached to the tip of the girder 50. As shown in FIG.

A traversing rail Ry is laid on the girder 50 and the boom 60, and a trolley 70 for lifting and lowering a load C (container) traverses along the traversing rail Ry.

By the way, in recent years, in track traveling machines such as the container crane 10, in order to cope with the case where the braking device 40 cannot be provided under the lower frame 22, a braking device 40 is installed under the traveling device 30. There is an increasing demand to be able to provide

For example, Japanese Patent Laid-Open Publication No. 2002-100000 discloses a general technical level of a braking device provided under the traveling device in a track traveling machine.

JP 2019-116339 A

However, in the braking device as shown in Patent Document 1, it is necessary to separately attach a fixed frame to the equalizer beam, which increases the number of parts, complicates the structure, and increases the cost. .

Further, in the case of the braking device of Patent Document 1, the horizontal force in the longitudinal direction of the running rail that is generated during braking is received by the stopper portion provided on the fixed frame. was a factor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and provides a braking device for a track traveling machine that can reduce the number of parts, simplify the structure and reduce the size, and reduce the cost. I am trying to.

The present invention is provided with an equalizer beam on which traveling wheels that can roll freely along a traveling rail are arranged, and a brake attached to the lower surface of a pressing frame by an extension operation of a fluid pressure cylinder arranged on the equalizer beam. In a braking device for a track traveling machine that performs braking by pressing a pad against a traveling rail,
a support bracket projecting from the side surface of the equalizer beam and to which the fluid pressure cylinder is attached;
A braking device for a track traveling machine, comprising: a notch portion formed in a lower portion of the equalizer beam so as to engage with the pressing frame and receives a horizontal force acting on the pressing frame in the longitudinal direction of the running rail during braking. is.

In the braking device for a track traveling type machine, the support bracket is connected to a body bracket of a cylinder body of the fluid pressure cylinder by a support pin, and a tip end of a piston rod extending from the cylinder body is connected to a connection bracket on the upper surface of the pressing frame. It can be connected by a connecting pin.

Further, in the braking device for the track traveling type machine, the cutout portion may be formed in the longitudinal direction center portion of the side plate of the equalizer beam that supports the wheel shaft.

Advantageous Effects of Invention According to the braking device of the track traveling type machine of the present invention, it is possible to reduce the number of parts, simplify the structure and reduce the size, and reduce the cost.

1 is an exploded perspective view showing an embodiment of a braking device for a track traveling machine according to the present invention; FIG. 1 is an assembled perspective view showing an embodiment of a braking device for a track traveling machine according to the present invention; FIG. 1 is a front view showing an embodiment of a braking device for a track traveling machine according to the present invention; FIG. 1 is a front view showing a braking state in an embodiment of a braking device for a track traveling type machine according to the present invention; FIG. 1 is a perspective view showing an example of a container crane as a general track traveling machine; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIGS. 1 to 4 show an embodiment of a braking device for a track traveling machine according to the present invention, and in the figures, the same reference numerals as in FIG. 5 denote the same parts.

In the case of this embodiment, the traveling device 30 of the container crane 10 as a track traveling machine is constructed by disposing traveling wheels 31 on an equalizer beam 32 so as to be free to roll along traveling rails Rx. A fluid pressure cylinder 42 and a pressing frame 43 that constitute a braking device 40 are arranged on the beam 32 .

More specifically, a support bracket 32b is projected from the side surface of the side plate 32a of the equalizer beam 32 that supports the wheel axle of the traveling wheel 31, and the body bracket 42b of the cylinder body 42a of the fluid pressure cylinder 42 is attached to the support bracket 32b. are connected by support pins 44 .

A tip end of a piston rod 42c extending from the cylinder body 42a is connected to a connecting bracket 43a on the upper surface of the pressing frame 43 by a connecting pin 45, and a brake pad 41 is attached to the lower surface of the pressing frame 43. As shown in FIG.

A notch portion 33 that engages with the pressing frame 43 is formed in the longitudinal direction central portion of the running rail Rx under the side plate 32a of the equalizer beam 32. The notch portion 33 acts on the pressing frame 43 during braking. It is adapted to receive a horizontal force F (see FIG. 4) in the Rx longitudinal direction.

Next, the operation of the above embodiment will be described.

As shown in FIGS. 2 and 3, when the fluid pressure cylinder 42 is contracted and the piston rod 42c is pulled into the cylinder body 42a, the pressing frame 43 is lifted upward, and the brake pad integrated with the pressing frame 43 is pulled upward. 41 is separated from the upper surface of the travel rail Rx, the braking is released, and the container crane 10 can travel.

On the other hand, as shown in FIG. 4, when the fluid pressure cylinder 42 expands and the piston rod 42c is pushed out from the cylinder body 42a, the pressing frame 43 is pushed downward, and the brake pad integrated with the pressing frame 43 is pushed downward. 41 is pressed against the upper surface of the travel rail Rx, braking is performed, and the container crane 10 stops.

At this time, if the container crane 10 is tossed by a strong wind and tries to move along the running rail Rx, a horizontal force F acts on the pressing frame 43 in the longitudinal direction of the running rail Rx. is received by a notch 33 formed in the side plate 32a of the equalizer beam 32. As shown in FIG.

As a result, in the case of this embodiment, unlike the braking device shown in Patent Document 1, there is no need to attach a separate fixing frame to the equalizer beam 32, which reduces the number of parts, simplifies the structure, and reduces the cost. up can be avoided.

In addition, the stopper portion of the fixed frame for receiving the horizontal force F in the longitudinal direction of the running rail Rx generated during braking, which is required in the braking device of Patent Document 1, is not required in this embodiment, so the size can be reduced. becomes possible.

In this way, the number of parts can be reduced, the structure can be simplified and the size can be reduced, and the cost can be reduced.

The brake system for a track traveling machine according to the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the scope of the present invention.

10 container crane (orbital machine)
20 body frame 21 support leg 22 lower frame 23 connection frame 30 travel device 31 travel wheel 32 equalizer beam 32a side plate 32b support bracket 33 notch 40 braking device 41 brake pad 42 fluid pressure cylinder 42a cylinder body 42b body bracket 42c piston rod 43 pressing rod Frame 43a Connection bracket 44 Support pin 45 Connection pin 50 Girder 60 Boom 70 Trolley C Suspended load F Horizontal force H Harbor Q Quay Rx Travel rail Ry Traversing rail

Claims (3)

An equalizer beam is provided with running wheels that can freely roll along the running rail, and the brake pad attached to the lower surface of the pressing frame is moved by the extension operation of the fluid pressure cylinder arranged on the equalizer beam. In the braking device of a track traveling type machine that brakes by pressing against
a support bracket projecting from the side surface of the equalizer beam and to which the fluid pressure cylinder is attached;
A braking device for a track traveling machine, comprising: a notch portion formed in a lower portion of the equalizer beam so as to engage with the pressing frame and receives a horizontal force acting on the pressing frame in the longitudinal direction of the running rail during braking. 2. The support bracket according to claim 1, wherein the body bracket of the cylinder body of the fluid pressure cylinder is connected by a support pin, and the tip end of the piston rod extending from the cylinder body is connected to the connection bracket on the upper surface of the pressing frame by a connection pin. brake system for track-running machines. 3. A braking device for a track traveling machine according to claim 1, wherein said notch portion is formed in the longitudinal direction center portion of the side plate of the equalizer beam that supports the wheel axle.

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