JPH0360963B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a repair method for snow removal nozzles buried in paved surfaces such as paved roads.

[Conventional technology]

Previously, as a repair method for this type of snow removal nozzle, there was no known method of completely replacing the old snow removal nozzle by scraping the buried concrete on the snow removal nozzle, removing the entire old snow removal nozzle, installing a new snow removal nozzle in its place, and fixing the surrounding area with concrete. It is being

[Problem to be solved by the invention]

The total replacement method described in the above-mentioned conventional technology causes large noise and vibration when breaking the concrete, requires a long curing time for the concrete to harden, and also requires traffic control during curing. In particular, repairs carried out in winter are not only inconvenient because concrete is difficult to solidify in cold temperatures, but also the curing time and traffic control time are extended, and due to snow on the roadside, the road width will be stretched for a long time during construction. There were deficiencies such as the fact that it was extremely narrow and extremely dangerous.

An object of the present invention is to provide a method for repairing a snow removal nozzle that fully eliminates the above-mentioned defects.

[Means to solve the problem]

In order to achieve the above object, the repair method for the snow removal nozzle of the present invention includes the steps of cutting the center part of the top wall of the nozzle body of the existing snow removal nozzle into a circle using an end mill, and cutting the area surrounded by the circular cutting. and a process of removing built-in items such as old valves, a step of cutting a hole in the cavity formed by the removal to fit the new built-in items such as a valve, and a process of tapping the new built-in items such as a new valve into the cavity. It is equipped with a process of loading in a suitable state using holes.

[Embodiments] and [Operations] Next, embodiments of the present invention will be described with reference to the drawings. First, vertically penetrating holes are formed at both corners of the front side and at the center of the rear side of the base plate 1 made of magnetic metal plate. Screw holes (not shown) were provided for the landing leg, and the landing leg screw rods 2, 2', and 3 were inserted into both the front screw holes and the rear screw hole so that their upper and lower ends penetrated both the top and bottom of the base plate 1. A handle 4 is removably attached to the upper end of the threaded rods 2, 2', 3 for the landing legs, and conveyance floats 5, 5' are attached to both sides of the rear edge of the platform 1. It constitutes a pedestal 6, and separately constitutes a pair of weight bodies 8 with handles 7, and also has a rotation stopper screw 10 on a pedestal 9 containing a separate electromagnet (not shown). Turntable 11
A machine base 12 is mounted on the rotary base 11, and a slide head 1 that slides up and down by a handle 13 and a rack mechanism (not shown) is mounted on the front surface of the machine base 12.
4, an electric drib main body 17 is mounted downwardly on this slide head 14 via a mounting bracket 15 and mounting screws 16, 16', and a shank holder 19 is provided at the lower end of the main shaft 18 of this electric drib main body 16, respectively.
An end mill 21 having blades 20 and 20' on the outer periphery and bottom of the cylinder, a drill bit 22 for drilling a pilot hole, and a tap 23 are installed on the shank holder 18 by replacing them as desired. Same slide head 1 next to 14
The main body 25 is constructed by providing the slide gauge 24 for measuring the vertical movement of No. 4 so as to be movable up and down, and the pedestal 6 is set at a predetermined place, and the main body 25 and A construction machine 26 is constructed in which the weight body 8 is placed and the main body 25 is fixed to the base plate 1 in an upright state by an electromagnet in the seat base 9.

Separately from this, a flange-shaped lid part 28 is integrally provided around the opening edge at the upper end, and the lid part 2
A second female thread 30 is carved into the inner circumferential surface of the lower part of the upper tube body 29, which has an O-ring 27 fitted to the outer circumferential surface of the upper tube 29, A lower tube body 3 having a first male screw 31 and a second male screw 32 and a third female screw 33 on the inner periphery of the upper end.
4 are connected by screwing the second female screw 30 and the first male screw 31, and a fixing hole 35 for water conduction that communicates with the inside and outside is opened at an intermediate height of the lower tube body 34,
Separately from this, a water control piece 39 is configured, which has a cylindrical shape with a closed upper surface and an open lower surface, has a third male screw 37 carved on the outer peripheral surface of the upper half, and has a driver groove 38 on the upper surface, This water control piece 39 is inserted into the lower pipe body 34 from above, and the third female screw 33 and third male screw 37 are screwed together, and both ends of the water control piece 39 are opened inwardly and outwardly on the peripheral wall portion. By opening a movable hole 40 for introducing water, a built-in component 41 such as a new valve is constructed.

In this way, the construction machine 26 and built-in items 41 such as new valves are brought to the site, and the construction machine 26 is placed on the road surface where the existing snow removal nozzle 43 is buried, the weight body 8 is placed on it, and the handle is attached. 4 while changing clothes, turn the landing leg threaded rods 2, 2', and 3.
After adjusting the horizontal orientation of base plate 1,
The operation of determining the position of the base 9 on the top, the operation of loosening the rotation stop screw 10 and rotating the rotation table 11, the operation of tightening the rotation stop screw 10, and the adjustment of the height of the electric drill body 17 using the handle 13. Align the center of the shank holder 19 with the center of the existing snow removal nozzle 43 by performing an operation, attach the end mill 21 to this shank holder 19, and check whether the bottom blade 20' of the end mill 21 hits a predetermined location on the existing snow removal nozzle 43. Check this by lowering the electric drido main body 17 using the handle 13. If the bottom blade 20' of the end mill 21 does not hit the existing snow removal nozzle 43 accurately at this time, change the position of the seat 9 and the rotary stand. After the end mill 21 is accurately positioned, the electromagnet is energized to attract the seat 9 to the pedestal 6, and the rotation stop screw 10 is tightened. confirm.

Next, operate the handle 13 to turn the end mill 2.
1's bottom blade 20' to the top wall 4 of the existing snow removal nozzle 43.
4, and while it is in contact, move the slide gauge 24 up and down to align its zero point with the reference point (not shown), then return the handle 13 and move the end mill 21. Bottom blade 20'
This is more difficult than the top wall 44 of the existing snow removal nozzle 43, and in this difficult state, the electric drido main body 17 is rotated and the handle 13 is operated to remove the end mill 2.
1 is lowered, and the central part of the top wall 44 of the existing snow removal nozzle 44 is cut into a circular shape with the water fountain 45 remaining. Whether or not this cutting has been done sufficiently is confirmed by checking the amount of descent of the slide head 14 on the scale of the slide gauge 24, which has been set to zero, by means of determining whether the depth of the cut has reached a predetermined depth.

Thereafter, the electric drill main body 17 is stopped and returned to the upper position, the end mill 21 is removed from the shank holder 19, and the portion 46 surrounded by the circular cut and the built-in items 47 such as old valves are removed using special pliers.

Furthermore, the pilot hole drilling drill 22 is attached to the shank holder 19, and the pilot hole drilling drill 22 is rotated and lowered to open the case 4 of the existing snow removal nozzle 44.
A pilot hole 49 is bored in the bottom surface at point 8.

Next, a first female thread 50 is cut into the pilot hole 49 using the tap 23. Tap 23 for this installation work.
is turned using a wrench 51 with a built-in ratchet wheel (not shown) that can be turned with one hand, and the short round bar pin 52 pre-installed on the wrench 51 is attached to the shank holder 1.
9 so that it can rotate freely and prevent the head from wobbling.

In this way, the processing for the existing snow removal nozzle 43 is completed.

Next, the new valve, etc. built-in object 4 is inserted into the space 53 formed by removing the old valve, etc. built-in object 47.
1 and screw the second male screw 32 into the first female screw 50, and the screwing causes the outer peripheral surface of the lid part 28 and the incisal surface 54 of the hole formed by the circular cutting to face each other. The space between these opposing surfaces is made airtight using an O-ring 27, and then, if necessary, the top surface of the case 48 of the existing snow removal nozzle 43 and the top surface of the built-in component 41 such as a new valve are made to the same height using a sander. The construction will be completed with the finishing touches.

〔Effect of the invention〕

The snow removal nozzle repair method of the present invention does not require scraping the buried concrete around the old snow removal nozzle, and greatly solves the above-mentioned problems such as noise, vibration, time, and danger. .

[Brief explanation of drawings]

FIG. 1 is a flowchart of an embodiment of the present invention, FIG. 2 is a plan view showing a construction machine used for carrying out the present invention, and FIG. 3 is a side view of the same. 1... Base plate, 2, 2', 3... Threaded rod for landing leg,
4... Handle, 5,5'... Floating ring, 6... Frame,
7... Handle, 8... Weight body, 9... Base, 10
... Rotation stop screw, 11 ... Turntable, 12 ... Machine base, 13 ... Handle, 14 ... Slide head, 15 ... Mounting bracket, 16, 16' ... Mounting screw, 17 ... Electric drill body , 18...main axis, 1
9...Shank holder, 20, 20'...Blade, 2
1...End mill, 22...Drill, 23...Tap, 24...Slide gauge, 25...Main body,
26... Construction machine, 27... O-ring, 28...
... Lid part, 29 ... Upper tube body, 30 ... Second female thread, 31 ... First male thread, 32 ... Second male thread,
33...Third female screw, 34...Lower tube body, 35...
... Fixed hole, 37 ... Third male screw, 38 ... Driver groove, 39 ... Water control piece, 40 ... Movable hole, 4
1...Built-in new valve, 43...Existing snow removal nozzle, 44...Ceiling wall, 45...Fountain, 46...Part, 47...Built-in old valve, 48...Case,
49... pilot hole, 50... first female screw, 51... wrench, 53... space.

Claims (1)

[Claims] 1 The process of cutting the central part of the top wall of the nozzle body of an existing snow removal nozzle into a circle using an end mill, the process of removing the part surrounded by the circular cut and the built-in parts such as old valves, and the removal. The present invention is characterized by comprising the steps of cutting a tap hole to fit a built-in item such as a valve into the cavity formed by the process, and loading a new built-in item such as a valve into the cavity in a compatible state by using the tapped hole. Repair method for snow removal nozzles.