JP2017132030A - Method and device for drilling hole in steel plate with free angle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for drilling a hole in a steel plate with a free angle, which enable drilling work within a drainage basin to be performed with excellent safety and workability and in a simple and economical manner depending on a construction site, without the need for skill.SOLUTION: An inclined movable plate 7 for fixing a drill unit 2 with a drilling bit 3a by magnetically attaching the drill unit is provided. A mounting base 1 for the drill unit 2 is fixed to a frame of a catch basin 14 by a clamp 8. A hole is drilled by performing contact/separation and sliding operations of the drilling bit 3a while variably maintaining a drilling position and a drilling angle depending on a wall surface gradient of the catch basin 14.SELECTED DRAWING: Figure 1

Description

  The present invention is to freely open a drainage hole at any position and angle according to the field conditions on any side surface of a metal drainage drainage tank installed so that rainwater and the like that has fallen on the road surface does not stay. The present invention relates to a drilling method and apparatus.

  The existing pavement structure of existing road bridges has traditionally been impervious to pavement, so rain treatment measures are implemented by collecting drainage using a drainage system on the pavement surface along the slope of the road. Conservation is planned.

  In recent years, due to the maintenance of existing road bridges and the traffic situation, the construction method conversion from conventional impermeable pavement to permeable rigging has been promoted. Due to these changes in the construction method, it is necessary to remove the entire surface of the conventional impervious pavement, and the rain that has permeated the road surface due to the pervious pavement will flow over the bridge concrete floor slab on the bottom of the pavement. It will be necessary to install a new drainage channel on the side of the water tank.

  The drainage catchment for the road bridge is designed and installed according to the guidelines for drainage works, and is arranged so as not to hinder the bridge structure and traffic. In addition, the shape and structure of the drainage basin are installed in accordance with the standards and fulfill the drainage function. The material of the catchment basin is basically made of metal, and the height of the installation surface of the rainwater inflow part of the catchment basin is the same as the height of the bridge pavement surface.

  An example of such a catchment is shown in Patent Document 1, for example. On the other hand, as a drilling device, a rotating shaft that is rotated by a motor is attached to the tip of the cone shaft, a cylindrical core body is attached to the tip of the rotating shaft, and a cylindrical soundproof cover that surrounds the core body around the cone shaft A concrete drilling device (Patent Document 2) in which an annular suction cup having a circular arc shape formed of a soft elastic material is attached around the tip opening of the soundproof cover, and a water supply pipe and a drain pipe are connected to the soundproof cover. reference.). In the operation of opening an existing manhole-pipe connection part and filling the opening with a vibration isolator, etc., the driving part is fixed to the inside of the pipe by a fixing member and the L-shaped shaft is rotated. An end mill device main body is attached to a guide member fixed to the distal end side of an L-shaped shaft, and a drill main body is slid along the guide member by a pinion rack mechanism to continuously open the peripheral edge of the pipe (Patent Document) 3).

  When adding a drainage channel as described above, it is necessary to drill a water-permeable hole in the wall of a metal water collecting basin for drainage, but the inside of the water basin is a limited space. For this reason, it is difficult to properly open the hole at the desired hole position on the wall surface, and conventionally this operation has been performed by thermal spraying using a gas type torch burner.

However, there are the following problems in the water hole processing work by thermal spraying.
(1) Since fire is used, there is a risk of burns and fires for workers.
(2) Since the thermal spraying temperature is high, it is impossible to work close to the drilling position, so accuracy and finish are lacking.
(3) A large amount of CO ₂ is emitted.
(4) Since work preparation, heating time, and hole finishing work are required, construction takes a long time.
(5) Cannot work in rainy weather.
(6) The work requires skill.

  Therefore, the present applicant, based on Patent Document 5, previously performed drilling work on the water collecting wall surface having the above-mentioned problems, without requiring a skilled worker, and is excellent in safety and workability and economically. We have proposed a free-angle steel plate drilling device that can perform drilling operations.

Japanese Patent No. 40228863 Japanese Utility Model Publication No. 63-9389 JP 2004-332515 A Utility Model Registration No. 3155703 Utility Model Registration No. 3196593

  According to the apparatus described in Patent Document 5, not only the above-mentioned problems can be solved, but also in drilling work, the drill unit is separated separately and magnetically fixed to the mounting base at the required position of the wall surface to be drilled. Therefore, there is an advantage that the drilling bit can be easily and reliably positioned at the drilling position, and the drilling operation can be easily performed even in a limited space of a narrow catchment, for example.

However, in the case where the above-mentioned device is time-consuming and troublesome to fix an outrigger for setting a mobile large carriage on the road surface outside the road, dismantling transportation is difficult, transportation cost is high, and the number of drilling holes is small The construction cost is expensive. In addition, there is a problem peculiar to a large-sized apparatus that is unsuitable for small-scale transportation in the field, and further improvement of an efficient drilling method and an easy-to-use apparatus have been desired.
The present invention provides a free-angle steel plate that is excellent in safety and workability, and can be easily and economically performed according to the construction site, without requiring skill, for drilling work in a drainage pit having the above-mentioned problems. An object is to provide a drilling method and apparatus.

  In order to achieve the above object, a free-angle steel plate drilling method according to the present invention is a drilling method for drilling a steel plate of a catchment basin using a drill unit having a drill bit, The drill bit is fixed to a frame of the steel plate while holding the drill angle variably according to the installation gradient of the steel plate, and the drill bit is moved to and away from the drill surface of the steel plate. It is characterized by drilling. Further, the free angle steel plate drilling device according to the present invention includes a mounting base provided with a drill unit provided so that a drilling bit faces a drilling surface of the steel plate, and the mounting base is fixed to the frame of the water collecting rod. And a magnetized portion for detachably holding the drill unit. Further, the drill unit is characterized in that the angle with respect to the steel plate is held variable. Furthermore, the variable angle of the drill bit with respect to the drilling surface is 0 to 90 degrees.

The free angle steel plate drilling method and apparatus of the present invention have the following excellent effects.
(1) During drilling work on the steel plate wall surface, the drill unit is magnetically fixed to the mounting base at the required position of the wall surface to be drilled, so the drilling position and angle can be freely determined, For example, the drilling operation can be easily performed even in a limited space within a narrow catchment.
(2) Since the mounting base of the drill unit is fixed to the drainage basin frame with a clamp, the device can be made smaller and lighter, easy to carry and reduce transportation costs. Drilling cost can be reduced.

It is a conceptual diagram which shows typically the basic structure of the apparatus which embodies the drilling method which concerns on this invention. It is a perspective view which shows one Example of the free angle steel plate drilling apparatus which concerns on this invention. It is a perspective view which shows the state which attached the drill unit to the apparatus of FIG. It is a perspective view which shows one Example of the mounting base of the free angle steel plate drilling apparatus which concerns on this invention. It is a perspective view which shows the state which installed the mounting base of FIG. 4 in the water catchment. It is a perspective view which shows the other Example of a mounting base. It is a perspective view which shows the conventional free angle steel plate drilling apparatus. It is a perspective view which shows the example of installation of a catchment basin.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
The conventional free angle steel plate drilling device (hereinafter simply referred to as the drilling device) shown in FIG. 7 and the drilling operation shown in FIG. 8 will be described. For convenience, the same reference numerals are used for the same components. A description will be given.

  First, FIG. 7 shows a conventional drilling device. This drilling device includes a movable caster and a battery mounting base 13 on which a battery 12 for the drill unit 2 is mounted, and has a configuration in which a drill unit mounting portion S is provided on the distal end side of a mobile large carriage 18 with a hand handle. The dolly with the drill unit mounting portion S facing the wall surface 14a of the water collecting basin 14 shown in FIG. 8 is drilled when the drill unit 2 is fixed to the drill unit magnetic attachment surfaces 6a and 7a. Any surface of the four wall surfaces 14a, 14b, 14c and 14d of the catchment basin 14 fixed on the road surface base layer B from which the road surface layer C has been peeled off by an outrigger at a relative position such that the bit 3a is directed to the drilling position H In addition, it is possible to freely penetrate the water penetration through 15 from the inside or outside of the water collecting rod 14. That is, the drilling position H can be set easily and appropriately according to the installation situation of the water collecting basin 14 and the peeling state of the road surface.

1 to 6, reference numeral 2 denotes a drill unit having a drill bit 3a on a rotating shaft (not shown) of a drive motor. Reference numerals 6 and 7 denote the drill unit 2 as shown in FIG. , A drill unit seat that supports the steel wall 14a, 14b, 14c or 14d of the water collecting basin 14 installed at a predetermined position of the curb 16 that closes the underdrain (drainage) 17 of the road shoulder at an arbitrary angle. The vertical plate 6 and the tilting movable plate 7 are an iron plate that functions as a part, and are configured integrally with the mounting base 1 to the water collecting basin 14. That is, the vertical plate 6 and the movable inclined plate 7 are provided with drill unit magnetic attachment surfaces 6a and 7a provided so that the drill bit 3a of the drill unit 2 faces the drilling position H of the wall surface 14a to be drilled. Yes.
In the figure, reference numerals 1a and 1b denote fitting bars to the frame portion of the water collecting basin 14 extending from the drill unit mounting pedestal 1 in a right angle direction, and the drill unit mounting pedestal 1 is attached to the water collecting basin 14. Positioning can be performed accurately and easily.

  The magnet unit 5 made of an electromagnet is integrally provided in the drill unit 2, and is detachably magnetized and supported and fixed to the unit magnetized surfaces 6a and 7a by energizing or shielding the electromagnet. The drill unit 2 is provided with a switch for turning on and off the energization so that the drill unit 2 can be attached and detached by switching the switch while the drill unit 2 is in contact with the desired drill unit magnetic attachment surfaces 6a and 7a. Has been.

  The drill unit 2 also includes a sliding operation portion including a drill sliding portion 3 for sliding the drill bit 3a and a drill bit feed handle 4, and the drill bit feed handle 4 is operated manually or automatically to advance and retreat. By doing so, the drill bit 3a can be brought into and out of contact with the wall surface 14a, 14b, 14c or 14d to be drilled. That is, as the drill sliding portion 3 moves, the tip of the drilling bit 3a cuts into the drilling position H of the wall surface 14a, 14b, 14c or 14d as the drill slide 3 moves, so that the water-permeable through-hole 15 having the required diameter can be drilled. Has been.

  For example, as shown in FIG. 2, when an arbitrary wall surface 14 a to be drilled is a vertical surface, a vertical plate 6 is erected on the upper edge of the water collecting surface 14, and the mounting base 1 is connected to the water collection base. The hook 10 of the clamp 8 and the hook 10 of the vertical plate 6 which are fixed to the frame of the flange 14 by the clamp 8 and sandwiched and fixed to the facing edge via the base block 9 are fastened and fixed by the turnbuckle 10. Then, as shown in FIG. 3, the drilling operation can be performed by magnetically attaching the drill unit 2 to the magnetic attachment surface 6 a of the vertical plate 6.

  Further, as in the apparatus shown in FIG. 4, when the arbitrary wall surface 14a to be drilled is a vertical surface or an inclined surface having an arbitrary gradient, a pair of support sides that become the mounting base 1 A movable inclined plate 7 whose drill unit mounting surface is variable in angle is attached between the plates by the support shaft 7b, and the magnetizing angle of the drill unit 2 is 0 to 90 degrees with respect to the drilling surface, that is, from a parallel state to a right angle state. This can be done by making it variable.

  That is, as shown in FIG. 5, when an arbitrary wall surface 14a to be drilled is a vertical surface or an inclined surface, the mounting is performed so that the inclined movable plate 7 is erected on the upper edge. The pedestal 1 is placed, the fitting bars 1a and 1b are fixed by the clamp 8, and the hook 10 of the clamp 8 and the hook 10 of the mounting pedestal 1 that are clamped and fixed to the facing edges via the pedestal block 9 are mounted. Tighten and fix with turnbuckle 10. Then, the drill unit 2 is magnetically attached to the magnetized surface 7a of the tilting movable plate 7, and the tilting movable plate 7 is rotated around the support shaft 7b according to a desired tilt angle, and then tilted by the front and rear stoppers 7c. The movable plate 7 is fixed and its movement is restricted. Thereby, the hole drilling operation can be performed regardless of the gradient of the wall surface 14a, 14b, 14c or 14d of the water collecting basin 14. When the wall surface 14a, 14b, 14c or 14d is composed only of a vertical surface, as shown in FIG. 6, the mounting base portion is attached to the vertical plate 6 which is bent at a right angle and has two magnetized surfaces 6a. Even a simple instrument with 1 can sufficiently achieve the desired effect. In addition, 6b in the figure is an escape window for the draft ring hook 14e formed in advance on the frame of the water collecting basin 14.

  As described above, according to the present invention, the wall surface of the water collecting basin 14 can freely position the drill unit 2 fixed to the magnetized surface 6a or 7a according to the inclination angle of the 14a, 14b, 14c or 14d, A desired drilling angle can be easily determined.

  The gist of the present invention is that the drill bit is drilled by making contact with and separating from the drilling surface of the steel plate while holding the drilling position angle variably according to the installation gradient of the steel plate. Specifically, a mounting base having a drill unit mounting surface provided so that the drilling bit faces the drilling surface of the steel plate, and a magnetized portion that is detachably held on the drill unit mounting surface are provided. In the above embodiment, the case where the drilling operation is performed on the wall steel plate of the existing water collecting basin has been described, but the present invention is not limited to this, and other civil engineering structures other than the water collecting basin It goes without saying that it can also be used for drilling work on steel plates used for objects and building members.

1 Drill unit mounting base 1a Water collecting frame fitting bar 1b Water collecting frame fitting bar 2 Drill unit 3 Drill sliding part 3a Drilling bit 4 Drilling bit feed handle 5 Magnetized part (electromagnet)
6 Drill unit mounting seat plate (vertical plate)
6a Drill unit magnetic attachment surface 6b Escape window 7 Drill unit mounting seat (inclined movable plate)
7a Drill unit magnetic attachment surface 7b Inclined movable plate support shaft 7c Inclined movable plate stopper 8 Clamp 9 Base block 10 Hook 11 Turnbuckle 12 Battery mounting table 13 Battery 14 Drain 14a Wall surface (steel plate)
14b wall surface (steel plate)
14c wall surface (steel plate)
14d wall surface (steel plate)
14e Suspension ring hook 15 Drilling hole (water-permeable through hole)
16 Curb 17 Underdrain (drainage)
18 Mobile large bogie B Pavement bottom surface C Pavement surface H Drilling position

Claims (4)

A drilling method for drilling a steel plate of a water collecting basin using a drill unit having a drilling bit, wherein the drilling bit is formed in a frame of the water collecting basin according to an installation gradient of the steel plate. , While holding it variably, and drilling by drilling the drill bit into and out of contact with the drilling surface of the steel plate.   A mounting base provided with a drill unit provided so that the drill bit faces the hole surface of the steel sheet, a clamp for fixing the mounting base to the frame of the catchment, and a magnetic attachment for holding the drill unit detachably The free angle steel plate drilling device according to claim 1, further comprising a portion. The free angle steel plate drilling method according to claim 1 or the free angle steel plate drilling device according to claim 2, wherein the drill unit is held at a variable angle with respect to the steel plate. 4. The free angle steel plate drilling method according to claim 1, or the free angle steel plate drilling device according to claim 2 or 3, wherein a variable angle of the drill bit with respect to a drilling surface is 0 to 90 degrees.

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