JPH051066B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is useful for sprinkling water on coal piles, earth and sand deposits, etc. for the purpose of preventing dust scattering, for washing insulators with water to prevent salt damage, and for firefighting. This invention relates to the improvement of an oscillating nozzle device used in the field of cooling water spraying, firefighting water spraying, extinguishing agent spraying, etc. for petroleum tanks, etc.

(Prior Art) The conventional oscillating nozzle device used for the above purpose connects the output shaft of a water motor, which is rotated by the water flow supplied to the nozzle, to a crank mechanism via a reduction gear. However, it was common to use a crank arm to swing the nozzle. However, with such a crank type, the nozzle swing speed is fast in the center and slow at both ends, so it draws a sine curve.
While the amount of water sprinkled in the center is insufficient and wins, on the other hand, a lot of water is sprayed in the same direction at both ends, and especially when watering a coal storage mountain, concentrated water is poured on the same part of the slope, which can cause landslides. However, in the case of washing the insulator with water, the amount of water injected into the insulator and insulator pipes may increase, resulting in a decrease in withstand voltage.

(Problems to be solved by the invention) The present invention solves these conventional problems,
An oscillating nozzle that enables uniform water sprinkling or spraying in all directions by keeping the oscillating speed of the nozzle constant, and also allows the oscillating angle of the nozzle to be changed arbitrarily depending on the location conditions such as coal storage piles. It was completed for the purpose of equipment.

(Means for Solving the Problems) The present invention rotates a pair of shafts at a constant speed in opposite directions using the output shaft of a water motor installed in a water supply channel to a nozzle, and each of these shafts has a Sector gears formed over a range not exceeding 1/2 circumference are installed with a phase shift, and the central axes of driven gears that are located between these sector gears and are alternately driven in opposite directions are extended to the outside of the gearbox. However, the present invention is characterized in that a gear for arbitrarily changing the swing angle of the nozzle is attached between this extension part and the swing axis of the nozzle.

(Example) Next, the present invention will be described in more detail with reference to illustrated examples.

In the first embodiment shown in FIGS. 1 to 4, 1 is a base, 2 is a pair of left and right columns erected on the base 1, and 3 is a hollow tubular shape attached to the upper ends of these columns 2. A water supply pipe 4, a nozzle 5 communicating with the water supply pipe 4, a nozzle drive mechanism 6, etc. are installed between these bearings 3, 3 so that the angle thereof can be adjusted freely. That is, by the action of the cylinder 7 provided between these parts and the base 1, the nozzle 5 can be made to stand upright, as shown by the solid line in FIG. 1, or tilted, as shown by the imaginary line. It is structured so that it can also be used.

As clearly shown in FIG.
is provided, and its output shaft 10 is connected to a first worm gear mechanism 11 and a second worm gear mechanism 1.
2, one shaft 1 of a pair of spur gears 13, 13 that mesh with each other and rotate at a constant speed in opposite directions.
It is joined to 4. Therefore, the water motor 9
is rotated by the water flow supplied to the nozzle 5, causing the shafts 14, 15 of the pair of spur gears 13, 13 to rotate at a constant speed in mutually opposite directions. As shown in FIG. 4, sector gears 16 and 17 are attached to these shafts 14 and 15 with a phase shift of about 180 degrees, each formed over a range not exceeding about 1/2 circumference. , and these sector gear 1
A driven gear 18 is attached between 6 and 17.
This driven gear 18 meshes with the sector gears 16 and 17 alternately and rotates in opposite directions by about 180 degrees. However, since the sector gears 16 and 17 rotate at a constant speed, the driven gear 18 also meshes with the sector gears 16 and 17 by about 180 degrees. It will rotate at a constant speed. The central axis 19 of this driven gear 18 is extended to the outside of the gear box that houses the spur gears 13, 13, sector gears 16, 17, etc., and there is a gap between this extension and the oscillating shaft 22 of the nozzle 5. Gears 20 and 21 are attached to arbitrarily change the swing angle of the nozzle 5. That is, a gear 20 attached to the central shaft 19 on the outside of the gearbox meshes with a gear 21 attached to an oscillating shaft 22 which also serves as a water supply channel to the nozzle 5, so that the rotational movement of the central shaft 19 is transferred to the nozzle 5. Communicating. As a result, the nozzle 5 performs a uniform reversal motion while sprinkling water, but its swing angle can be easily changed by changing the number of teeth of the gears 20 and 21.

The second embodiment shown in FIG. 5 has a structure in which the nozzle 5 swings around a vertical swing shaft 22. As shown in FIG. In the device of this second embodiment, the axes are orthogonal between the first worm gear mechanism 11 and the second worm gear mechanism 12 in order to be perpendicular to the swing axis 22, but other points Since these components are essentially the same as those in the first embodiment, corresponding parts are given the same numbers and their explanation will be omitted.

(Function) In the system configured as described above, when pressure water is supplied from the water supply pipe 4 to the nozzle 5, the water motor 9 installed in the water supply channel 8 is rotated by the water flow, and the pair of shafts 14 and 15 are rotated. The sector gears 16 and 17 attached to each of these shafts 14 and 15 are rotated at a constant speed in opposite directions, and the sector gears 16 and 17 are alternately engaged with the driven gear 18 installed in the center thereof, and the driven gear 18 is rotated approximately 180 degrees at a time. let At this time, since the sector gears 16 and 17 are rotating at a constant speed, the driven gear 18 also rotates at a constant speed and reverses.
The nozzle 5 connected through the nozzle also performs a uniform swinging motion. Therefore, according to the device of the present invention, the nozzle 5 can spray or discharge a certain amount of water both at the center and at both ends of the oscillating motion.

Further, in the device of the present invention, the central axis 1 of the driven gear 18
9 is extended to the outside of the gearbox, and gears 20 and 21 are installed between this extension and the swinging shaft 22 of the nozzle 5 to arbitrarily change the swinging angle of the nozzle 5. The swing angle of the nozzle 5 can be changed simply by replacing the gears 20, 21. Therefore, the oscillation angle of the nozzle 5 can be easily set at the site according to the location conditions of the coal pile, etc., and there is an advantage that water can be uniformly sprayed only at necessary locations.

In addition, in the first embodiment, the angle of the nozzle 5 can be changed in the vertical plane by the cylinder 7,
Further, in the second embodiment, the angle of the nozzle 5 with respect to the swing shaft 22 can be changed by operating the handle 23.

(Effects of the Invention) As is clear from the above description, the present invention uses a pair of sector gears to alternately reverse the driven gear approximately 180 degrees at a constant speed, and the driven gear causes the nozzle to perform an oscillating motion. Therefore, the swinging speed of the nozzle can be kept constant. Furthermore, the swing angle of the nozzle can be easily changed by simply replacing gears outside the gearbox, making it possible to spray water only where it is needed. Therefore, when watering a coal pile, water is not concentrated on the same area as in the past, and there is no risk of landslides, and the amount of water used can be reduced. In addition, when used for insulator cleaning, water can be uniformly sprayed in all directions, improving the live wire cleaning withstand voltage and reducing water usage. Since water can be sprayed, it is possible to improve firefighting performance and reduce the amount of water and chemicals used. Therefore, the present invention can greatly contribute to the development of industry as it solves the problems of the conventional oscillating nozzle devices of this type.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a first embodiment of the present invention;
Figure 2 is a right side view, Figure 3 is a sectional view of the main parts,
FIG. 4 is a side view showing the relationship between the sector gear and the driven gear, and FIG. 5 is a front view showing the second embodiment of the present invention. 5: Nozzle, 9: Water motor, 10: Output shaft, 14, 15: Shaft, 16, 17: Sector gear, 18: Driven gear, 19: Center shaft, 20, 2
1: Gear, 22: Swing shaft.

Claims (1)

[Claims] 1 A pair of shafts 14, 1 are connected by the output shaft 10 of the water motor 9 installed in the water supply channel 8 to the nozzle 5.
5 are rotated at a constant speed in opposite directions, and sector gears 16 and 17 formed over a range not exceeding 1/2 circumference are attached to each of these shafts 14 and 15 with a phase shift. gear 1
The central shaft 19 of the driven gear 18 located between 6 and 17 and driven in opposite directions is extended to the outside of the gear box, and the oscillation of the nozzle 5 is disposed between this extension and the oscillation shaft 22 of the nozzle 5. An oscillating nozzle device characterized in that gears 20 and 21 are attached to arbitrarily change the angle.