JPH11301965A - Snow removing device for portal crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove snow accumulated in a rack rail or a travel rail on a girder without any human power. SOLUTION: A snow removing device is provided with a rack rail 12 and a travel rail 13 provided on a girder 1, a trolley 4 having a pinion 17 engaged with the rack rail 12 to be rotated and a wheel 18 rolled on the travel rail 13, and a nozzle 25 for injecting water to the rack rail 12 and the travel rail 13 attached to the trolley 4, and snow removal is performed by moving the trolley 4 sideways while injecting water to the rack rail 12 and the travel rail 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow removing device for a portal crane.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a portal crane for loading and unloading containers. This crane is composed of a portal-shaped upper girder 1 and left and right legs 2,2. The wheels 3 provided at the lower ends of the legs 2 and 2 allow the vehicle to run in a direction perpendicular to the plane of FIG.

A trolley 4 is provided on the girder 1 so as to be able to traverse in the left-right direction along the girder 1. A spreader 7 can be moved up and down by a hoisting rope 5 via a head block 6 on the trolley 4. Hanged. 8 in the figure
Is a container that is lifted by the spreader 7 and is loaded or unloaded from the yard between the legs 2 and 2, and 9 is a container that is carried in or out of the container 8 near one side between the legs 2 and 2. The chassis 10 provided in
An operation room suspended from the trolley 4 and 11 are piled containers piled up in the yard.

FIG. 6 is a half plan view of a trolley 4 that can traverse in the left-right direction along the girder 1. On the girder 1, a rack rail 12 and a traveling rail 13 are provided in parallel. On the lower surface of the trolley 4, a rotating shaft 15 that is rotationally driven from a motor (not shown) via a speed reducer 14 is supported by a bearing 16, and a pinion 17 is fixed to a tip side of the rotating shaft 15, Further, wheels 18 are rotatably mounted.

The pinion 17 meshes with the rack rail 12 and is rotated by the rotating shaft 15 to move the trolley 4 to the girder 1.
The wheels 18 support the load of the trolley 4 and travel along the traveling rail 1 according to the trolley 4 traverse.
3 to rotate.

[0006]

When the portal crane is installed in a snowfall area, the trolley 4 cannot be traversed unless snow is removed from the rack rails 12 and the traveling rails 13 on the girder 1 when snow is accumulated. become.

For this reason, conventionally, at the time of snowfall, it has been necessary to manually perform snow removal work over the entire length of the girder 1 before starting operation.

However, the snow removal operation on the girder 1 is a high-place operation, and snow removal over the entire length of the girder 1 is dangerous and difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problem and to provide a snow removing device for a portal crane which can remove snow on a rack rail and a traveling rail on a girder without requiring human power. It is assumed that.

[0010]

According to a first aspect of the present invention, there is provided a trolley having a rack rail and a traveling rail provided on a girder, a pinion meshing with the rack rail and rotating, and a wheel rotating on the traveling rail. A nozzle attached to the trolley and spraying water to a rack rail and a traveling rail, and relates to a snow removing device for a portal crane, which sprays water from the nozzle to the rack rail and the traveling rail. When the trolley is slowly traversed, snow on the rack rails and the running rails is removed by water sprayed from the nozzles.

According to a second aspect of the present invention, there is provided a trolley having a rack rail and a running rail provided on a girder, a pinion meshing with the rack rail and a wheel rotating on the running rail, and a trolley attached to the trolley. A nozzle that blows hot air to the rack rail and the traveling rail, and relates to a snow removing device for a portal crane, which is provided with a nozzle, and slowly traverses the trolley while blowing hot air from the nozzle to the rack rail and the traveling rail. Snow and ice frozen on the rack rails and running rails in a cold region are thawed and removed by hot air blown from nozzles.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a perspective view showing an example of the embodiment of the present invention, in which legs 2 on one side of a pair of parallel girder 1 are shown.
Between the two, a generator for generating electric power for driving the wheel 3 and the pinion 17 and a control power supply, and an engine room 19 containing an engine are conventionally installed.

In the present invention, a water tank 20 and a water supply pump 21 are provided adjacent to the engine room 19, and a suction port of the water supply pump 21 is connected to the water tank 20.
A pipe 22 having one end connected to one discharge port is raised along the leg 2, and the other end of the pipe 22 is connected to one end of a hose 23. The other end of the hose 23 is connected to a pipe 24 which is arranged so as to branch off on both sides of the trolley 4 traversing the girder 1.

The water pump 21 is driven by a motor that rotates with the electric power generated in the engine room 19, or is driven from the engine in the engine room 19 via a clutch and a coupling.

As shown in FIGS. 1 and 2, a nozzle 25 is attached to the trolley 4 at a position just above the rack rail 12 and the running rail 13 with the injection port facing down. The connected pipe 24 is connected to the nozzle 25. A protective cover 26 is attached around the nozzle 25.

Next, the operation of the apparatus shown in FIGS. 1 to 3 will be described.

When there is a possibility of snowfall, water is stored in the water tank 20 in advance. When the operation of the trolley 4 is stopped at night or the like, the side of the trolley 4 to which the nozzle 25 is not attached is brought close to the end of the girder 1 and stopped.

Due to the snowfall, the rack rail 1 on the girder 1
2. When snow runs on the running rail 13, when the water pump 21 shown in FIG. 3 is driven, the water stored in the water tank 20 is transferred from the water pump 21 to the pipe 22, the hose 2 and the like.
3. Through the pipe 24, it is sprayed onto the rack rail 12 and the running rail 13 from the nozzle 25 shown in FIGS.

As a result, the snow on the rack rail 12 and the running rail 13 immediately below the nozzle 25 is melted by water, and the snow is removed.

When the trolley 4 is gradually moved to the side of the nozzle 25 with water sprayed from the nozzle 25, the snow on the rack rails 12 and the running rails 13 is sequentially removed by the water sprayed from the nozzle 25, and the trolley 4 Will be able to cross without difficulty.

The nozzles 25 can be mounted not only on one side of the trolley 4 but also on both sides in the direction of the rack rail 12 and the running rail 13.

FIG. 4 is a view similar to FIG. 2 showing another example of the embodiment of the present invention, and in this embodiment, a portion of the trolley 4 located immediately above the rack rail 12 and the running rail 13. In addition, a nozzle 27 for blowing hot air is attached with the injection port facing down. The nozzle 27 may be attached not only to one side of the trolley 4 but also to both sides of the rack rail 12 and the traveling rail 13.

A blower and an air heater are installed adjacent to the engine room 19 shown in FIG. The blower is driven by a motor that rotates with the electric power generated in the engine room 19, and the air heater is a heater configured to heat the air sent from the blower with the electric power generated in the engine room 19, or an engine. It is heated by the exhaust heat of the engine in the chamber 19, and is sent to the pipe 22 as hot air.

The pipe 22 is connected to one end of a hose 23 as in the embodiment shown in FIG. 3, and the other end of the hose 23 is arranged so as to branch off on both sides of the trolley 4 traversing the girder 1. 4 is connected to a certain pipe 24, and the other end of the pipe 24 is
As shown in (2), it is connected to the nozzle 27, and hot air is blown from the nozzle 27 to the rack rail 12 and the traveling rail 13.

When snow accumulates on the rack rails 12 and the running rails 13 on the girder 1 in the portal crane provided with the apparatus shown in FIG. 4, the trolley 4 is gradually traversed while operating the blower and the air heater. Then, the snow on the rack rails 12 and the running rails 13 and the frozen ice are melted and removed by the hot air blown from the nozzles 27, and the trolley 4 can traverse without hindrance.

[0027]

According to the first aspect of the present invention, the snow on the rack rail and the running rail can be removed by water jetted from the nozzle attached to the trolley, so that the snow removing operation can be performed safely without requiring human power. effective.

According to the second aspect of the present invention, since hot air is blown from the nozzle attached to the trolley to the rack rail and the traveling rail, snow and ice frozen in a cold region can be thawed and removed safely without requiring human power. There is an effect that can be done.

[Brief description of the drawings]

FIG. 1 is a half plan view showing an example of an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a perspective view showing an example of an embodiment of the present invention.

FIG. 4 is a view similar to FIG. 2, showing another example of the embodiment of the present invention.

FIG. 5 is a front view showing an example of a portal crane.

FIG. 6 is a half plan view of a trolley used for a conventional portal crane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Girder 4 Trolley 12 Rack rail 13 Travel rail 17 Pinion 18 Wheel 25 Nozzle 27 Nozzle

Claims (2)

[Claims] 1. A trolley having a rack rail and a running rail provided on a girder, a pinion that meshes with the rack rail and a wheel that rotates on the running rail, and a rack rail and a running rail attached to the trolley. And a nozzle for injecting water into the snow. 2. A trolley having a rack rail and a running rail provided on a girder, a pinion meshing with the rack rail and a wheel rotating on the running rail, and a rack rail and a running rail attached to the trolley. And a nozzle for blowing hot air onto the snow crane.