JP2019206805A - Soundproof frame at time of excess weld chipping - Google Patents

Abstract

To improve working environment of an operator while preventing making noise to the outside and scattering of dust at the time of a chipping work for excess weld of pile head.SOLUTION: A sound proof frame 10 has a frame body 20 and a soundproof sheet 30, and the frame body 20 is provided with a quadrilateral frame body made of a horizontal bar material connecting four support rod materials arranged at four corners of a chipping work area and upper end parts of the support rod materials. The soundproof sheet 30 comprises a side wall sheet part 31 covering four side surfaces of the frame body 20 and a ceiling sheet part 32 covering a ceiling surface, and is made of a sound insulating sheet material. A ventilation device for ventilating the working space is provided in the soundproofing sheet 30, and a light window 45a made of a transparent sheet material is provided on the ceiling sheet part 32.SELECTED DRAWING: Figure 3

Description

  TECHNICAL FIELD The present invention relates to a soundproof yagra during lifting when the pile head surfacing work is performed, and the surging for covering the pile head surfacing and the surrounding work area.

  In order to build buildings such as office buildings and condominiums, many cast-in-place concrete piles are built in the ground. A cast-in-place concrete pile is constructed by placing ready-mixed concrete in a pile hole in which a reinforced cage is built. When ready-mixed concrete is placed in a pile hole, defective concrete mixed with excavated earth and sand, stable liquid, etc. is piled up on top of the ready-mixed concrete. For this reason, after the surplus ready-mixed concrete is hardened, the surplus is removed (pulverized) and removed.

  In the concrete processing method of the pile head described in Patent Document 1, the extra-banking processing bucket is put into the reinforcing bar basket of the pile head, the defective concrete is taken into the extra-banking processing bucket, and the defective concrete is discharged to the outside. Like to do. In this way, if the defective concrete is discharged to the outside by the surplus processing bucket, the amount of surplus to be suspended can be reduced, but the defective concrete that could not be discharged to the outside by the surplus processing bucket is It is made to handle by the hanger construction.

JP 2007-291632 A

  Since multiple cast-in-place concrete piles are built at a predetermined interval, it is necessary to hang up multiple pile heads to construct a single building, and a building with a large floor area. When building a building, there will be a lot of hanging parts on the pile head. The pile head surfacing process is an operation of scraping off the pile head surplus by applying impact vibration to the pile head surplus with a pulverizer, and generation of noise and dust is inevitable.

  In order to prevent the noise generated during the lifting operation from propagating to the surrounding area and dust from being scattered around, attempts were made to completely shield the hanging area of the pile head surplus from the outside. However, if it is completely shielded from the outside, not only the working environment around the pile head surplus will be dark, but also the dust will be filled, and in summer, the temperature of the working environment will rise and the worker will be more likely to suffer from heat stroke. The working environment of the worker who performs is poor.

  An object of the present invention is to improve a worker's working environment while preventing external noise and dust from being scattered during a pile head surfacing operation.

  The soundproofing yagura of the surfacing of the present invention is composed of four strut bars arranged at the four corners of the hanger work area around the pile head surfacing, and a horizontal bar connecting the upper ends of the strut bars. A sound insulation unit comprising a frame having a quadrilateral frame, a side wall sheet covering four sides of the frame, and a ceiling sheet covering a ceiling surface, and is detachably mounted on the outside of the frame A soundproof sheet made of a conductive sheet material, a ventilation device that is detachably attached to the soundproof sheet and ventilates a work space formed inside the soundproof sheet, and the ceiling sheet portion made of a transparent sheet material A light window.

  The suspension work area around the pile head surplus is shielded and covered by soundproofing from the outside, preventing the noise and dust generated during the suspension work from propagating or scattering around the construction site. The Furthermore, since the work space inside the soundproofed yagura is cleaned by the ventilation device, the working environment of the hanging work can be improved.

It is a perspective view which shows the external appearance seen from the front side of the soundproof yagura installed in the hanging work area. It is the perspective view which looked at the soundproof yagura of FIG. 1 from the back side. (A) is a front view of FIG. 1, (B) is a left view of FIG. It is a perspective view which shows the frame of a soundproof yagura. It is sectional drawing by the side of the plane of FIG. It is a top view which shows the some pile head surplus of a cast-in-place concrete pile, respectively.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The soundproof yagura 10 has a skeleton 20 shown in FIG. 4 and a soundproof sheet 30 shown in FIGS. 1 and 2, and the soundproof sheet 30 is detachably attached to the outside of the skeleton 20. As shown in FIGS. 4 and 5, the soundproofing yagura 10 has a pile head reinforcement 12 projecting from the work ground 11 and the surrounding area around the pile head reinforcement 12. It is installed in the suspension work area 15. The pile head surplus 12 protrudes from the work ground 11 by construction of a cast-in-place concrete pile. When the soundproof yagler 10 is installed in the hanging work area 15, a work space 16 is formed inside the soundproof yagler 10. The work space 16 is shielded from the outside by the soundproof yagler 10.

  In FIG. 4, a vertical reinforcing bar is shown in the work ground 11 among the reinforcing bar cage 14 built in the pile hole 13. As described above, the pile head surplus 12 includes defective concrete and is hardened and then removed from the pile head by a lifting operation using a pulverizer. The soundproof yagler 10 is installed in the suspension work area 15, and noise generated in the work area 15 is suppressed from being transmitted to the outside by the soundproof sheet 30. As a result, the surrounding environment can be kept good and the worker's working environment can be kept good.

  As shown in FIG. 4, the skeleton 20 includes four support bar members 21 a to 21 d arranged at the four corners of the suspension work area, and a horizontal bar member that connects the upper end portions of these support bar members 21 a to 21 d. And a quadrilateral frame 22 composed of 22a to 22d. Assuming that the support rods 21a and 21b are the front side, the upper ends of these support rods 21a and 21b are connected by the front horizontal bar 22a, and the upper ends of the support rods 21c and 21d on the back side are the back side. Are connected by a horizontal bar 22b. Furthermore, the upper end portions of the support bar 21a and the support rod 21c are connected by a horizontal bar 22c, and the upper ends of the support rod 21b and the support bar 21d are connected by a horizontal bar 22d. A reinforcing bar 23 is connected between the ends of the column bars 21a to 21d and the horizontal bars 22a to 22d.

  Roof support bars 24a and 24b are connected to the center in the longitudinal direction of the horizontal bars 22a and 22b, and beam bars 25 are connected to both roof support bars 24a and 24b. An inclined ceiling bar 26a is connected between the roof support bar 24a and the support bar 21a, and an inclined ceiling bar 26b is connected between the roof support bar 24a and the support bar 21b. Similarly, an inclined ceiling bar 26c is connected between the roof support bar 24b and the support bar 21c, and an inclined ceiling bar 26d is connected between the roof support bar 24b and the support bar 21d. The Each bar is formed by a hollow pipe and is connected by a joint (not shown), and the framework 20 is assembled by the bar. A suspension hook 27 is attached to the beam bar 25 in order to transport the assembled frame 20 by a crane or the like.

  When carrying out the lifting work of the pile head surplus 12, the soundproof yagura 10 is assembled by connecting the respective bar members with joints at the construction site. Therefore, when transporting the soundproof yagler 10 to the construction site, a large number of bars can be trucked in a state of being disassembled and bundled.

  By hooking a hook of a hoisting machine such as a crane (not shown) on the hanging hook 27, the skeleton 20 with the soundproofing sheet 30 attached thereto or the skeleton 20 before the soundproofing sheet 30 is attached with the hoisting machine. It can be hung and moved to any position.

  As shown in FIGS. 1 to 3, the soundproof sheet 30 is made of a sound insulating sheet material, and includes a side wall sheet portion 31 that covers four front and rear, left and right side surfaces, and a ceiling sheet portion 32 that covers a ceiling surface. ing. An inclined ceiling surface is formed by the horizontal bar 22c, the beam bar 25, and the front and rear inclined ceiling bars 26a and 26c of the skeleton 20 shown in FIG. In addition, an inclined ceiling surface is formed by the horizontal bar 22d, the beam bar 25, and the front and rear inclined ceiling bars 26b and 26d. Each ceiling surface is covered with a ceiling wall portion 32 a of the ceiling sheet portion 32. The ceiling sheet portion 32 further includes a side wall upper end portion 32b that covers the upper end portions of the four side surfaces. Thus, the ceiling sheet portion 32 is formed by a ceiling wall assembly in which the ceiling wall portion 32a covering the ceiling surface and the side wall upper end portion 32b covering the upper end portions of the four side surfaces are integrated.

  As shown in FIG. 5, the side wall sheet portion 31 includes a first side wall portion 33 that covers two adjacent side surfaces of the front side and one side surface of the skeleton 20, and the remaining two side surfaces of the skeleton 20. That is, it has the 2nd side wall part 34 which covers a back side and the side surface adjacent to this. One end of the first side wall 33 is attached to the support bar 21b, and one end of the second side wall 34 is attached to the support bar 21c. The first side wall 33 extends from the support bar 21b to the support bar 21c through the outside of the support bar 21a, and further overlaps one end of the second side wall 34 from the support bar 21c. Similarly, the second side wall 34 extends from the support bar 21c to the support bar 21b through the outside of the support bar 21d, and further overlaps one end of the first side wall 33 from the support bar 21b. .

  As described above, when both end portions of the two side wall portions 33 and 34 are overlapped with each other, the shielding performance of the side wall sheet portion 31 is enhanced, and when the operator performs the lifting work of the pile head surplus 12 In addition, even when noise is generated, leakage of noise from the suspension work area 15 to the outside is suppressed.

  An overlapping portion 36 a that enters the inside of the side wall upper end portion 32 b of the ceiling sheet portion 32 is provided on the upper portion of the first side wall portion 33. The overlapping portion 36a is detachably attached to the inner side of the side wall upper end portion 32b by a carabiner hook. Similarly, an overlapping portion 36 b that enters the inside of the side wall upper end portion 32 b of the ceiling sheet portion 32 is provided on the upper portion of the second side wall portion 34. The overlapping portion 36b is detachably attached to the inner side of the side wall upper end portion 32b by a carabana hook. As described above, the side wall portions 33 and 34 have the overlapping portions 36 a and 36 b, and the upper end portions of the respective side wall portions 33 and 34 enter the side wall upper end portion 32 b of the ceiling sheet portion 32. This prevents rainwater from entering the soundproof sheet 30 and suppresses noise from leaking from between the ceiling sheet portion 32 and the side wall sheet portion 31.

  The soundproof sheet 30 includes a ceiling sheet portion 32 in which a ceiling wall portion 32 a and a sidewall upper end portion 32 b are integrated, and a sidewall sheet portion 31. The side wall sheet portion 31 includes first and second side wall portions 33 and 34. Therefore, the soundproof sheet 30 is formed by the three parts of the ceiling sheet portion 32 and the two side wall portions 33 and 34. Therefore, when transporting the soundproofing glass 10 to the construction site, the soundproofing sheet 30 can be easily transported by truck by dividing it into three parts. Further, the airtightness is improved by combining these three portions in a partially overlapping manner.

  You may make it attach the strip | belt-shaped additional sheet | seat which is not shown in figure to the lower end part of each side wall part 33 and 34 from an inner surface side. The additional sheet is used to prevent a gap from being generated between the recess and the side wall sheet portion 31 when the work ground 11 has a recess.

  As shown in FIG. 1, an entrance / exit 41 is provided on the front surface of the soundproof yagura 10. The doorway 41 is formed by inner and outer overlapping portions 42 provided in the first side wall portion 33. A slit 42a is formed in the outer portion of the overlap portion 42, and a slit 42b is formed in the inner portion. The operator pushes both the slits 42a and 42b so that the inside and the outside of the soundproof yagler 10 are spread out. You can go back and forth. The overlapping portion 42 suppresses noise from leaking out of the soundproof yagler 10 through the entrance / exit 41.

  The ceiling wall portion 32a of the soundproof sheet 30 is provided with daylighting windows, that is, light windows 45a and 45b made of a transparent sheet material. The soundproof sheet 30 is formed of a non-transparent soundproof sheet, and light does not enter the inside of the work room from the outside, but by providing transparent light windows 45a and 45b in the ceiling sheet portion 32. Without using a lighting fixture, the operator can comfortably carry out the hanging work in the soundproofing glass 10.

  As shown in FIG. 1, an exhaust port 51 is provided on the front side of the soundproof sheet 30, and an intake port 52 is provided on the back side of the soundproof sheet 30 as shown in FIG. 2. The exhaust port 51 is provided at the upper left end in FIG. 1 on the front side of the first side wall 33, and the intake port 52 is provided at the lower left end in FIG. 2 on the back side of the second side wall 34 which is the other side wall. It has been. An exhaust duct 54 provided with an exhaust fan 53 is connected to the exhaust port 51 as indicated by a two-dot chain line. On the other hand, as shown by a two-dot chain line, an intake duct 56 provided with an intake fan 55 is connected to the intake port 52. The exhaust fan 53 and the intake fan 55 constitute a ventilation device for ventilating the interior of the work space 16 inside the soundproof yagler 10. By providing a filter (not shown) at the outlet of the exhaust fan 53, dust in the work space 16 can be prevented from scattering to the outside.

  An intake port 52 is provided below the second side wall portion 34 corresponding to the lower portion of the work space 16, and an exhaust port 51 is provided above the first side wall portion 33 corresponding to the upper portion of the work space 16. Therefore, the air that has entered the work space 16 from the intake port 52 flows from the lower side to the upper side in the work space 16 so as to cross the pile head surplus 12, and then is exhausted to the outside. Thereby, dust generated by the suspending work is discharged to the outside from the exhaust port 51, and the air in the working space 16 is always kept clean, so that the working environment of the worker can be improved. Since the dust discharged from the exhaust port 51 is captured by a filter provided in the exhaust fan 53, the dust is suppressed from being scattered around.

  FIG. 6 is a plan view showing a state in which a plurality of cast-in-place concrete piles are constructed in order to build a building, and pile head surpluses 12 of the respective concrete piles are shown. For example, when the lifting work of the pile head surplus 12 at the upper left end in FIG. 6 is finished, the soundproof yagura 10 is sequentially moved to cover the other pile head surplus 12. At that time, the soundproofing glass 10 is composed of the skeleton 20 and the soundproofing sheet 30 and has a lightweight structure, so that the operator can lift the soundproofing glass 10 and carry it easily. However, the soundproof yagler 10 may be moved by a hoist such as a crane.

  Cast-in-place concrete piles are buried underground in the building. In FIG. 6, a foundation beam is constructed between pile heads adjacent in the left-right direction and the up-down direction, and a building column is constructed on the concrete pile.

  As described above, when the suspension work area is shielded by using the soundproof yagler 10, it is possible to suppress noise generated during the suspension work from being transmitted to the outside or dust from being scattered to the outside. Furthermore, the suspension work location is brightened by the light transmitted through the light windows 45a and 45b, and the air in the work space 16 is cleaned, so that the worker's work environment can be improved.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the exhaust fan 53 and the intake fan 55 may be arranged in the work space 16 in the soundproof yagler 10, respectively.

DESCRIPTION OF SYMBOLS 10 Soundproof yagura 11 Work ground 12 Pile head extra pile 13 Pile hole 14 Reinforcing bar cage 15 Work area 16 Work space 20 Frame body 21a-21d Prop bar 22 Frame 22a-22d Horizontal bar 23 Reinforcement bar 24a, 24b Roof support Bar 25 Beam bar 26a-26d Inclined ceiling bar 27 Hanging hook 30 Soundproof sheet 31 Side wall sheet part 32 Ceiling sheet part 32a Ceiling wall part 32b Side wall upper end part 33 First side wall part 34 Second side wall part 41 Entrances 42a, 42b Slits 45a, 45b Light window 51 Exhaust port 52 Inlet port 53 Exhaust fan 54 Exhaust duct 55 Intake fan 56 Intake duct

Claims (4)

A framework having a quadrilateral frame made up of four support bars arranged at the four corners of the lifting work area around the pile head surfacing, and a horizontal bar connecting the upper ends of the support bars; ,
A soundproof sheet comprising a side wall sheet portion covering four side surfaces of the skeleton and a ceiling sheet portion covering a ceiling surface, and made of a sound insulating sheet material detachably attached to the outside of the skeleton;
A ventilation device that is detachably attached to the soundproof sheet and ventilates a work space formed inside the soundproof sheet;
A light window made of a transparent sheet material and provided in the ceiling sheet portion,
The surplus is soundproofing when hanging. The surplus according to claim 1, wherein the soundproofing sheet is a soundproofing yagura when suspended.
A ceiling wall assembly in which the ceiling surface and the sidewall upper ends covering the upper ends of the four side surfaces are integrated;
A first side wall that covers two adjacent side surfaces of the four side surfaces, and an upper end portion of which enters the upper end portion of the side wall;
The surplus is a soundproofing gray glass when hanging, having a second side wall that covers the remaining two side surfaces of the four side surfaces and has an upper end part that enters the upper end part of the side wall. The surplus according to claim 1 or 2, in the soundproof yagura when hanging, the ventilation device,
An intake duct connected to an intake port provided on the lower side of one side wall;
An intake fan attached to the intake duct;
An exhaust duct connected to an exhaust port provided at the upper end of the other side wall;
And an exhaust fan attached to the exhaust duct.   The surplus sound according to any one of claims 1 to 3, wherein the suspension is provided with a hanging hook that is hooked to a hook of a hoisting machine.

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