JPS6195105A - Water sprinkler for melting snow - 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 [Technical Field of the Invention] The present invention relates to a snow-melting water sprinkler that automatically rotates using water pressure and sprinkles water around it to extinguish lightning.

[Technical complications of inventions and their problems]

Various types of water sprinklers have been used for snow removal, but for example, a rotating body with multiple arms arranged radially is attached to a spindle so as to be rotatable, and water for lightning extinguishing is sprayed. The water is guided from inside the spindle to each arm, and is ejected from the nozzle at the tip of each arm, and the reaction force of the water is used to rotate a rotating body together with each arm, spraying water around the area and extinguishing lightning. It is used.

However, with such a rotating type, the sliding wear of the spindle and the bearing of the rotating body relative to the spindle is large, and water leakage is likely to occur due to the wear interval. When using untreated water,
Abrasion due to mixed fine sand increases over time, leading to increased water leakage. As water leakage increases in this way, the amount of water sprayed from the nozzle decreases, making it impossible to expect a planned lightning extinguishing effect. In this case, worn parts must be replaced to maintain a constant dispersion state, but parts must be replaced frequently, which requires time and effort for maintenance and inspection, and is uneconomical.

[Purpose of the invention]

An object of the present invention is to provide a snow-melting water sprinkler that can be used stably over a long period of time by improving the points mentioned in -F and reducing wear on the bearing portion.

[Summary of the invention]

The water sprinkler for snow removal of the present invention includes a spindle which has a water guide hole with an open lower end and a closed upper end formed inside, and a communication hole connected to the water guide hole on the side, and an upper bearing body and a lower bearing body which are rotatably fitted to the upper bearing body, and a plurality of through holes fixed between the upper bearing body and the lower bearing body and at positions corresponding to the communication holes of the spindle. A rotating body having a base formed in each through hole of the rotating body, a plurality of arms arranged radially and having a passageway inside, and a nozzle attached to the tip of each arm 11. In order to achieve this, fine crystal particles with excellent wear resistance and lubricity are mixed into the nickel-phosphorus plating base material on the outer circumferential surface of the spindle and the inner circumferential sliding surfaces of the upper and lower bearing bodies relative to the spindle. It is characterized by the formation of a solid lubricant layer, which improves the wear resistance and lubricity of the rotating sliding surfaces of snow-melting sprinklers used under severe conditions.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1 to 3 show a water sprinkler A for snow removal. In the figure, 1 is a cylindrical spindle - 1 This spindle 1 is formed with a water guide hole 2 whose lower end is open inside and whose upper end is closed. One or more communicating holes 3 are formed, and a large diameter receiving part 4 is integrally formed on the outer periphery of the lower part.
A connecting threaded portion 5 is provided at the lower end.

A cap-shaped upper bearing body 6 is rotatably fitted to the upper part of the spindle 1 via a rubber ring 7 and an O-ring 8 for preventing water leakage fitted into the inner surface. A support screw 9 is screwed on. Also,
A cylindrical lower bearing body 11 is rotatably fitted onto the lower receiving part 4 of the spindle 1 through a catch seat 10 and a rubber ring 12 and an O-ring 13 fitted into the inner surface for preventing water leakage. has been done.

The rotating body 14 is screwed and fixed between the upper bearing body 6 and the upper bearing body 11 by upper and lower screw portions 15.16,
A bearing sleeve 11 is press-fitted into the inner periphery of the rotating body 14 and fixed to the outer periphery of the spindle 1, and a plurality of bearing sleeves 11 are press-fitted onto the inner periphery of the rotary body 14, and a plurality of bearing sleeves 11 are placed on the sides of the rotary body 14 and the bearing sleeve 17 at positions corresponding to the communicating holes 3 of the spindle 1. In this embodiment, three through holes 18 are formed at regular intervals, a mouth pipe 19 is screwed and fixed to each of the through holes 18, and each mouth pipe 19 has a water passage 20 inside. and a tubular arm 2 with the tip side slightly bent to one side.
10 bases are screwed and fixed, and a plurality of arms 21 are connected to 11
A nozzle 23 having an ejection hole 22 is screwed to the tip of each arm 21 arranged in an i-radial shape.

-〇 - Then, the connecting threaded part 5 of the spindle 1 is connected to the water supply pipe 2.
It is connected and fixed to a branch pipe 25 provided at 4 through a socket 26.

Then, when water for lightning extinguishing is supplied from the water supply pipe 24, the water passes from the branch pipe 25 through the water introduction hole 2 of the spindle 1, the communication hole 32 through hole 18, and the water passage 20 of the arm 21, and is ejected from the nozzle 23. Water is ejected from the hole 22, and the reaction force of this water discharge causes the air 1 to
121 and the rotating body 14, and with this rotation, each arm 21 passes through each through hole 18 of the rotating body 14.
Water is sequentially introduced into the area, and the rotating body 14 along with each arm 21 automatically rotates due to water pressure, spraying water around the area and extinguishing lightning.

The outer circumferential surface of the spindle 1 and the inner circumferential sliding surfaces of the upper bearing body 6, lower bearing body 11, and bearing sleeve 17 are coated with electroless nickel-phosphorus plating as a base material, which has wear resistance and A solid flounder containing fine crystal particles with excellent lubricity is formed. The chemical composition of this plating solution is nickel (Ni) 90-92%, phosphorus (P
) 8 to 10% is used. In this case, spindle 1
The nickel-phosphorus plating layer is made of nickel-phosphorus (Ni-
Fine crystal particles of silicon carbide (SiC) are added to P) and plated. In addition, the nickel-phosphorus plating layer of the upper bearing body 6, the lower bearing body 11, and the bearing sleeve 17 is coated with nickel-phosphorus (nickel-phosphorus).
Fine crystal particles of boron nitride (BN) or fine crystal particles of silicon carbide (SiC) and boron nitride (BN) are added to plating.

Then, by adding these crystalline particles and uniformly dispersing them in the plating solution and performing plating, the crystalline particles are uniformly precipitated in the plating film.

In addition, each of the above-mentioned added crystal fine particles has a particle size of 0.5 to 25
μm, and the nickel mark tl in the plating solution! l
! M/j! Add in the range of 1 to 5 g. By adding these substances, the plating layer becomes a nickel-phosphorus-based composite film having wear resistance and lubricity, and can protect the base material.

The properties of the crystalline fine particles added above are as follows.

Crystal fine grain Density Hardness Melting point powder <
9/ cd) (K9/ -) ('C)S i
C3,232002210 RN 2.3 3300 Then, these crystal fine particles were coated with a nickel-phosphorus plating solution (N
Ii'tF was added to i-P) and plated on steel materials, and a wear test was conducted on a sample in which a composite synthetic plating layer was formed.
A is now as shown in FIG.

In this test, IKfl steel materials having a composite synthetic plating layer were rubbed together 500 times, and the abrasion weight was measured.
As a result, it was confirmed that the wear resistance was highest at a heat treatment temperature of around 400°C, and that the wear resistance was further improved by adding each of the above-mentioned crystalline particles.

In addition, in implementation, by selecting the hole diameter and shape of the ejection hole 22 of the nozzle 23 of each arm 21, the flight distance of water droplets and the amount of water spray can be freely selected. As shown in the figure, long distance -1 watering a
, medium-distance watering b, short-distance watering C1, and near-distance watering d can be performed at each arm 21 at the back position.

Figure 5 shows an example of an embodiment on an elevated railway track, where the railway rail 31
A water sprinkler A is arranged between the track sprinkler 32 and the inspection walkway 33 on which the track base 32 has been laid, via a water supply pipe 24, and long-distance watering a1 is applied to the track bed 32, and short-distance watering C is applied to the inspection walkway 33.

FIG. 6 shows an embodiment for a parking lot, in which the roof 35 of the garage 34
A water sprinkler A is installed above through the water supply pipe 24, and a short distance water sprinkler C1 is installed near the entrance of the garage 34.A medium distance water sprinkler B is installed on the roof 35.
1. Long-distance watering a is performed on the outdoor parking lot 36. FIG. 7 shows an embodiment for a road, in which a water sprinkler is installed between a roadway 31 and a sidewalk 38 via a water supply pipe 24, and a long-distance watering a and a medium-distance watering are performed on the roadway 37.

Short-range watering C is performed on the sidewalk 38.

Figure 8 shows an example for a building and a large vehicle.
A plurality of water sprinklers A are installed on the roof 40 of the building 39 via the water pipes 24, and a water sprinkler A is installed on the large car 41 to spray water over the roof 40 of the building 39 from a medium distance, or from a short distance. Distance watering C is performed depending on each location, and distance watering d is performed on the large vehicle 41 in the near future.

In addition, during implementation, it is necessary to adjust the circumferential arrangement position, number, and diameter of the communication holes 3 of the spindle 1, the bending angle of the tip of each arm 21, and the hole diameter of the ejection IL 22 of each nozzle 23. This makes it possible to set the amount of water sprinkled and the flying distance in accordance with the intended use.

〔Effect of the invention〕

According to the present invention, a solid lubricant layer is formed on the outer circumferential surface of the spindle and the inner circumferential sliding surfaces of the upper bearing body and the lower bearing body relative to the spindle, in which a nickel-phosphorous coating is added as a base material and crystalline fine particles having various characteristics are added. By forming the bearing, it maintains not only corrosion resistance but also high abrasion resistance and excellent lubricity, thereby reducing wear on the rotating sliding surface of the bearing and allowing stable use over a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the water sprinkler of the present invention, and FIG.
FIG. 3 is a side view thereof, FIG. 3 is a longitudinal sectional view thereof, FIG. 4 is a wear test characteristic diagram, and FIGS. 5 to 8 are explanatory diagrams showing examples of water sprinkler installation. A... Water sprinkler, 1... Spindle, 2... Water guide hole, 3...
・Communication hole, 6... Upper bearing body, 7... Rubber ring, 11
...Lower bearing body, 12..Rubber ring, 14..Rotating body, 18..Through hole, 20..Water passage, 21..Arm, 2
3. Nozzle.

Claims (5)

[Claims] (1) A spindle that has a water guide hole that is open at the lower end and closed at the upper end, and a communication hole that is connected to the water guide hole on the side, and that is rotatably fitted to the upper and lower parts of the spindle. an upper bearing body and a lower bearing body; a rotating body fixed between the upper bearing body and the lower bearing body and having a plurality of through holes formed at height positions corresponding to the communication holes of the spindle; a plurality of arms having a base attached to each passage hole of the rotating body and arranged radially and having a passageway therein; and a nozzle attached to the tip of each arm; In contrast, a solid lubricant layer is formed on the inner circumferential sliding surfaces of the upper bearing body and the lower bearing body, which is made of nickel-phosphorus plating and mixed with crystal fine particles having excellent wear resistance and lubricity. Water sprinkler for snow removal. (2) The snow-melting water sprinkler according to claim 1, wherein the solid lubricant layer of the spindle contains silicon carbide as crystalline particles. (3) The snow-melting water sprinkler according to any one of claims 1 and 2, wherein the solid lubricant layer of the upper bearing body and the lower bearing body contains boron nitride as crystal fine particles. . (4) Snow removal according to any one of claims 1 and 2, wherein the solid lubricant layer of the upper bearing body and the lower bearing body contains silicon carbide and boron nitride as crystal fine particles. water sprinkler. (5) According to any one of claims 1 to 4, a rubber ring for preventing water leakage from the rotating sliding surface is fitted into the inner surface of the upper bearing body and the lower bearing body. Water sprinkler for snow removal as described.