Fixture removal jig, fixture installation method, fixture removal method

Abstract

To provide a fixing metal fitting attaching / detaching jig capable of attaching / detaching the fixing metal fitting for fixing a sound insulation panel to a support between the support and the panel without hitting the fixing metal fitting with a hammer or the like.SOLUTION: A fixing metal fitting attaching / detaching jig 1 for removing a fixing metal fitting 10 interposed between a support H1 of a sound insulation wall and a sound insulation panel P1 or attaching the same to the gap by retracting is provided with a retractable rod 3 consisting of a rod member and a lever rod 4 consisting of a rod member swingably connected to the retractable rod 3. A hook plate 2 inserted into a folded loop part of the fixing metal fitting 10 to hook the fixing metal fitting 10 is fixed to an upper-end part 31 of the retractable rod 3, and a support plate 6 fitted into a back surface groove PG of the sound insulation panel P1 to take reaction force is rotatably pivoted on a base end part 41 side of the lever rod 4.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a jig for attaching and detaching a fastener to be inserted in the gap between a support post and a sound-insulating panel of a sound-insulating wall. [Background technology]

[0002] Conventionally, in order to block (insulate) noise from noise sources such as highways, railways, factories, etc., sound insulation walls have been installed in which sound-insulating panels P1 (including sound-absorbing panels such as metal sound-absorbing panels, concrete sound-insulating panels, and translucent panels made of resin glass) are inserted into the flanges of supports H1 made of H-shaped steel or the like, as shown in Figures 9 and 10.

[0003] The sound-insulating panel P1 of such a sound-insulating wall is fixed to the support H1 by inserting a leaf spring-type fixing bracket 10, which is made by bending a steel plate as shown in Figure 11, between the flange of the support H1 and the panel by hammering it in with a hammer or the like, and then pressing it down with the restoring force of the fixing bracket 10.

[0004] Furthermore, 50 years have passed since the sound barriers were first installed, and many of the products have deteriorated, requiring replacement work. As the roads on which the sound barriers are installed are already in use, construction work is naturally often carried out at night.

[0005] Furthermore, the locations where sound insulation walls are installed often pass through residential areas with a good noise environment, so noise during construction must be kept to a minimum. However, when removing and installing sound insulation panels during sound insulation wall replacement work, the aforementioned fixing brackets 10 must be removed and attached, and the impact noise generated during this process causes noise problems.

[0006] For example, Patent Document 1 discloses a fixing bracket 1 for a soundproof panel, which is formed by bending a strip-shaped steel plate to form an insertion portion 4 consisting of a vertical insertion portion 2 and an inclined insertion portion 3, an inner support portion 5 which is bent continuously from the top of the inclined insertion portion 3 towards the vertical insertion portion 2 so that its vertical cross section is roughly L-shaped, and a pull-out prevention portion 6 which is formed continuously from the top of the vertical insertion portion 2 so as to protrude laterally relative to the vertical insertion portion 2 (see claim 1 in the scope of claims of Patent Document 1, paragraphs

[0012] to

[0021] of the specification, Figures 1 to 4 of the drawings, etc.).

[0007] Furthermore, Patent Document 2 proposed by the applicant of the present application discloses a high-strength fixing metal fitting for a sound insulation plate, which comprises a support force transmission member 1 formed by bending a steel plate and a wedge 2 for fixing a sound insulation plate 4, and which is inserted into a groove 3a of a support pillar 3 and has a hanging surface portion 11 that descends from the inner end along the surface of the sound insulation plate 4, and which has a pressure-contact surface portion that abuts the lower end of the hanging surface portion 11 against the inner surface of the opposing groove wall of the support pillar 3, and which has an input portion that is in contact with the front surface or faces it with a small gap, and which at its tip is formed with a tensioning surface portion that abuts against and tensions the base portion of the pressure-contact surface portion (see claim 1 of Patent Document 2, paragraphs

[0021] to

[0026] of the specification, and Figures 1 to 5 of the drawings, etc.).

[0008] However, the fixing bracket 1 described in Patent Document 1 and the high-strength fixing bracket described in Patent Document 2 require the fixing bracket 10 to be struck with a hammer or the like to insert it between the flange of the support column H1 and the sound-insulating panel P1. Therefore, there is a problem in that an impact sound is generated when the fixing bracket 10 is struck with a hammer or the like, causing noise. Construction work to install such sound-insulating panels and the like is often carried out at night, when traffic restrictions such as lane closures are easily implemented, and the impact sound has become a problem. In many cases, sound-insulating panels P1 and the like are installed in response to complaints from nearby residents about noise from passing vehicles, and there are circumstances in which particular attention must be paid to noise during construction work to install sound-insulating panels and the like.

[0009] Therefore, the inventors of the present application proposed a fixture retracting jig described in Patent Document 3. The fixture retracting jig described in Patent Document 3 comprises a pair of upper and lower hooks 2, 2 that hook fixtures 10, and a lever mechanism 3 that connects these hooks 2, 2 and can move the distance between them closer or farther apart using the principle of leverage, and by shortening the distance between the pair of hooks 2, 2 hooked onto fixtures 10 and bringing them closer together, the upper fixture 10 can be pulled down toward the lower fixture, and can be retracted into the gap between the support pillar H1 and sound-insulating panel P1 for installation.

[0010] However, the fixture retracting jig described in Patent Document 3 has the problem that it is difficult to easily remove existing fixtures when removing existing soundproofing panels, resulting in poor workability. Furthermore, the fixture retracting jig described in Patent Document 3 has a configuration in which one hook is hooked onto the lower fixture to retract it, which means it cannot be used when installing the bottom soundproofing panel. Furthermore, the fixture retracting jig described in Patent Document 3 is designed for removing large soundproofing panels, and the entire jig is large and bulky, making it difficult to carry. In addition, the fixture retracting jig described in Patent Document 3 has a limited rotation direction for the lever mechanism 3, so only one of a pair of fixtures can be attached, and it was necessary to bring two fixture removal jigs with different rotation directions to the site. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Japanese Patent Application Publication No. 10-280335 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-336766 [Patent Document 3] Patent Publication No. 2021-123956 Summary of the Invention [Problem to be solved by the invention]

[0012] The present invention was devised in consideration of the above-mentioned problems, and its purpose is to provide a fixture removal tool that can be used to remove and attach fixtures that secure sound-insulating panels to posts without having to hit the panels with a hammer or the like. [Means for solving the problem]

[0013] The fastener removal and installation jig of the first invention is a fastener removal and installation jig that removes fasteners that are placed in gaps between the supports of a sound insulation wall and sound insulation panels, or that pulls in and installs them in the gaps, and is characterized in that it comprises a pull-in rod made of rod material and a lever rod also made of rod material that is connected to the pull-in rod so that it can swing freely, and a hanging plate that is inserted into the folded loop part of the fastener and hangs on the fastener is fixed to the upper end of the pull-in rod, and a support plate that is fitted into the back groove of the sound insulation panel and takes up reaction force is rotatably supported on the base end side of the lever rod.

[0014] The fixture removal and installation jig of the second invention is characterized in that, in the first invention, the hanging plate is attached to the pull-in rod so that both ends protrude, and the pull-in rod and the lever rod are connected so that they can swing more than 180 degrees.

[0015] The fixing hardware removal and installation jig of the third invention is characterized in that, in the second invention, the pull-in rod and the lever rod are connected to each other so as to be able to swing freely via a strip-shaped anti-outward falling plate, and the protruding length of the anti-outward falling plate from the pull-in rod is set longer than the protruding length of both ends of the hanging plate from the pull-in rod.

[0016] The fixing fixture removal jig of the fourth invention is characterized in that, in any of the first to third inventions, a hook is attached to the back of the pull-in rod to prevent it from accidentally falling during work.

[0017] The fifth aspect of the present invention provides a method for installing a fastener in a gap between a support post of a sound-insulating wall and a sound-insulating panel, characterized in that the fastener removal jig described in any one of claims 1 to 4 is attached to the rear groove of the sound-insulating panel, and the lever rod is pulled up to pull down the hanging plate fixed to the pull-in rod, thereby retracting and installing the fastener attached to it.

[0018] The method for removing a fastener according to the sixth invention is a method for removing an existing fastener installed in a gap between a support pillar and a sound-insulating panel of an existing sound-insulating wall, characterized in that a fastener removal jig as described in any one of claims 1 to 4 is attached to the rear groove of the sound-insulating panel, and the lever rod is pulled down to push up the hanging plate fixed to the pull-in rod and push up and remove the fastener attached to it. [Effects of the Invention]

[0019] According to the first to fifth inventions, it is no longer necessary to insert the fixing brackets into the gap between the support and the sound-insulating panel by hitting them with a hammer or the like, which not only makes it possible to install the fixing brackets easily and quickly, but also prevents the generation of impact sounds and reduces noise during sound-insulating wall installation work.

[0020] In particular, according to the second aspect of the present invention, one fixture attachment / detachment jig can be used to attach or detach either the left or right fixture, eliminating the need to carry a pair of jigs, one for the left and one for the right.

[0021] In particular, according to the third invention, during the swinging motion, the anti-outward tipping plate slides along the outer flange of the support, stabilizing the swinging motion and preventing the entire fixing bracket removal and attachment jig from tipping outward when the lever rod is pulled up or down.

[0022] In particular, according to the fourth invention, a hook is attached, so even if the lever rod falls out of the worker's hand, it is possible to prevent the entire fixing fixture removal jig from accidentally falling and making a falling noise.

[0023] According to the sixth aspect of the present invention, existing fasteners that could not be removed using conventional fastener retraction jigs can be easily removed, making it possible to remove existing soundproofing panels easily, quickly, and efficiently without making any noise. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is a front perspective view showing a fixture removal and installation jig according to an embodiment of the present invention. [Figure 2] FIG. 2 is a rear perspective view showing the fixing metal fitting detachment tool. [Figure 3] FIG. 3 is a partially enlarged perspective view showing a state in which the fastener is attached to the hanging plate of the fastener detachment jig. [Figure 4] FIG. 4 is an explanatory diagram showing the installation of the fixture detachment jig with the support posts omitted. [Figure 5] FIG. 5 is an explanatory view of the use of the same fixing metal fitting removal jig, showing a state in which the fixing metal fitting is inserted between the sound-insulating panel and the flange of the support. [Figure 6] Figure 6(a) is a partially enlarged view of the area around the fasteners of the fastener removal jig, taken from diagonally above the front side of the sound insulation wall, and Figure 6(b) is a partially enlarged view of the area from diagonally above the rear side, which is the opposite side. [Figure 7] FIG. 7 is a rear perspective view showing the operation of attaching the fixing metal fitting detaching jig. [Figure 8] FIG. 8 is a rear perspective view taken at a different angle from that of FIG. [Figure 9] FIG. 9 is a photograph showing an example of a sound barrier. [Figure 10] FIG. 10 is a partially enlarged photograph showing the vicinity of the support pillar in FIG. [Figure 11] FIG. 11 is a vertical cross-sectional view that schematically shows a state in which a sound-insulating panel is fixed to a support pillar with a fixing bracket. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, a fixture removal and installation jig, a fixture installation method, and a fixture removal method according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0026] [Fixed metal fitting removal jig] A fastener removal and installation jig according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG. 1 is a front perspective view of a fastener removal and installation jig 1 according to an embodiment of the present invention, and FIG. 2 is a rear perspective view of the fastener removal and installation jig 1. As shown in FIGS. 1 and 2, the fastener removal and installation jig 1 according to this embodiment is composed of a hanging plate 2 for hanging the aforementioned fastener 10, a pull-in rod 3 for supporting and fixing the hanging plate 2, a lever rod 4 swingably connected to the pull-in rod 3 and using the principle of leverage to pull down or pull up the hanging plate 2 together with the pull-in rod 3, an outward collapse prevention plate 5 connected to the lever rod 4 and pivotally supported at the lower end of the pull-in rod 3, and a support plate 6 fitted into the rear groove PG of the sound-insulating panel P1 to absorb reaction force. Note that the "front" refers to the side facing the sound-insulating wall and facing the road in use (the same applies below).

[0027] (hanging board) Fig. 3 is a partially enlarged perspective view showing the state in which the fastener 10 has been attached to the hanging plate 2 of the fastener removal jig 1. As shown in Fig. 3, the hanging plate 2 is a strip-shaped steel plate that is inserted into the folded-back loop portion 10a of the fastener 10 described above, and has the function of hooking and hanging the fastener 10. Of course, the hanging plate 2 is not limited to metal such as steel plate, and may be made of other materials as long as it is a member with a predetermined strength that allows it to be hooked onto a new fastener 10 to be attached or an existing fastener 10 to be replaced, and to pull the fastener 10 up or down.

[0028] 1 to 3, the hanging plate 2 has a central portion 20 in the longitudinal direction fixed to an upper end portion 31 of a pull-in rod 3 (described later) by screws, and both longitudinal ends 21 are attached so as to protrude from the side surfaces of the pull-in rod 3. Of course, the method of fixing the hanging plate 2 to the pull-in rod 3 is not limited to screws, and it goes without saying that it may also be fixed by bolts or welding.

[0029] (retracting rod) 1 to 3, the pull-in rods 3 are cylindrical square steel pipe rods, which fix the hanging plate 2 and have protective caps 7 fitted to the upper ends 31 to protect them from sharp metal edges. Of course, the pull-in rods 3 are not limited to metals such as steel pipes, and may be made of other materials as long as they have a predetermined strength.

[0030] As shown in Figure 2, a hook 8 is attached to the back of the pull-in rod 3 to prevent the fastener removal jig 1 from accidentally falling during work. By connecting this hook 8 to an appropriate location such as the worker's belt, it is possible to prevent the entire fastener removal jig 1 from accidentally falling and making a falling noise even if the lever rod 4 (described below) comes off the worker's hand.

[0031] (lever rod) Like the pull-in rod 3, the lever rod 4 is a cylindrical square steel pipe rod, and when rotated around an axis of rotation supported by the support plate 6 described below, its length exerts the principle of leverage, thereby reducing the force with which the pull-in rod 3 is pulled up and down.

[0032] 1 and 2, an anti-fall plate 5 (described later) is fastened with screws or the like to a base end 41 that is connected to the retractable rod 3 at one longitudinal end of the lever rod 4, and the retractable rod 3 and lever rod 4 are connected via the anti-fall plate 5 to a shaft 50 (described later) so that they can swing freely through 180 degrees or more. For this reason, by grasping and pulling up or down the tip end 42, which is not connected to the retractable rod 3 at one longitudinal end of the lever rod 4, the retractable rod 3 connected at the base end 41 can be pulled up or down (see also FIGS. 7 and 8).

[0033] (External fall prevention plate) Like the hanging plate 2, the outward tipping prevention plate 5 is a strip-shaped steel plate made of a steel band, with one longitudinal end fixed to the base end 41 of the lever rod 4 and a central portion rotatably supported by a shaft 50 on the side of the lower end 32 of the pull-in rod 3. The other longitudinal end, or tip 51, of this outward tipping prevention plate 5 is set to be longer than the protruding length of the end 21 of the hanging plate 2. Therefore, when the lever rod 4 swings, the tip 51 of the outward tipping prevention plate 5 is inserted inside the outer flange of the support column H1 and slides along the outer flange of the support column H1, thereby stabilizing the swinging motion and preventing the entire fixing bracket removal jig 1 from tipping outward due to the swinging motion of the lever rod 4.

[0034] Of course, like the hanging plate 2, the outward collapse prevention plate 5 is not limited to being made of metal such as steel plate, and may be made of other materials.

[0035] (support plate) The support plate 6 is made of a steel material such as a channel material with a U-shaped cross section, and has a trapezoidal cross section with the end of the U-shaped cross section that opens outward to fit into the rear groove PG of the sound-insulating panel P1. This support plate 6 has the function of fixing the center of rotation for the swinging movement of the lever rod 4 by fitting into and being fastened to the rear groove PG of the sound-insulating panel P1.

[0036] As shown in Figure 2, this support plate 6 is rotatably supported by a shaft 60 on the end of the lever rod 4 on the side where the anti-fall plate 5 is attached, via a cylindrical spacer 9. Therefore, when the other end of the lever rod 4 is pulled up or down, the anti-fall plate 5 and the retraction rod 3 connected to the lever rod 4 are pulled up or down in the opposite direction, allowing the fixing bracket 10 attached to the hanging plate 2 to be attached or detached.

[0037] Of course, like the hanging plate 2, the support plate 6 is not limited to being made of metal such as a steel plate, and may be made of other materials.

[0038] <How to install the fixing bracket (how to remove the fixing bracket)> Next, a fastener removal method and a fastener installation method according to an embodiment of the present invention, which are methods of using the fastener removal jig 1, will be described using Figures 3 to 8. First, the fastener installation method will be described. Figure 4 is an explanatory diagram showing the installation of the fastener removal jig 1 with the support pillar H1 omitted. Figure 5 is an explanatory diagram showing the use of the fastener removal jig 1, showing the fastener 10 being inserted between the sound-insulating panel P1 and the flange of the support pillar H1. Figure 6(a) is a partially enlarged view of the fastener removal jig 1 near the fastener 10, taken from diagonally above the front side of the sound-insulating wall, and Figure 6(b) is a partially enlarged view of the opposite side, the back side, taken from diagonally above.

[0039] (Fixing bracket) First, we will briefly explain the fixing bracket 10 using Figures 3 and 11. As shown in Figures 3 and 11, the fixing bracket 10 is a member that is bent from a stainless steel plate of a specified thickness, and is inserted between the flange of the support H1 and the sound-insulating panel P1, and has the function of pressing the sound-insulating panel P1 with the restoring force of the steel material, thereby fixing it to the support H1.

[0040] As shown in Figure 3, this fixing bracket 10 has a loop portion 10a folded back from a stainless steel plate, and when this loop portion 10a is inserted between the flange of the support H1 and the sound-insulating panel P1, it elastically deforms, and its restoring force presses against the sound-insulating panel P1, fixing it to the support H1.

[0041] In the method for installing the fixture according to this embodiment, first, the loop portion 10a of the fixture 10 is inserted into one of the two end portions 21 of the hanging plate 2 depending on the position of the fixture 10 to be attached.

[0042] For example, as shown in Fig. 5, when attaching the fixing bracket 10 to the right side of the sound-insulating panel P1 when viewed from the rear side, the fixing bracket 10 is attached by inserting the loop portion 10a of the fixing bracket 10 into the left end 21 of both end portions 21 of the hanging plate 2 when viewed from the front side, as shown in Fig. 3. On the other hand, when attaching the fixing bracket 10 to the right side of the sound-insulating panel P1 when viewed from the rear side, the fixing bracket 10 is attached to the end 21 of the hanging plate 2 that is opposite the direction shown in Fig. 3.

[0043] 1 and 2, the fixture detachment jig 1 described above is attached so that both longitudinal ends 21 of the hanging plate 2 protrude from the side of the pull-in rod 3, and the pull-in rod 3 and lever rod 4 are connected to each other via an anti-fall plate 5 on an axis 50 so that they can swing freely through 180 degrees or more. Therefore, one fixture detachment jig 1 can be used to attach or remove either the left or right fixture 10.

[0044] Next, in the fastener installation method according to this embodiment, the fastener removal jig 1 is attached to the back surface of the sound-insulating panel P1, as shown in Figures 4 to 6. Specifically, the support plate 6 is fitted into the back surface groove PG of the sound-insulating panel P1, and the hanging plate 2 with the fasteners 10 attached and the tip 51 of the outward tip-over prevention plate 5 are inserted between the sound-insulating panel P1 and the flange of the support post H1.

[0045] FIG. 7 is a rear perspective view showing the operation of the fastener attachment / detachment jig 1 during installation, and FIG. 8 is a rear perspective view from a different angle than FIG. 7 . Note that FIG. 8 omits the support post H1 in order to show the operation of the tip 51 of the outward tip-prevention plate 5. In the fastener installation method according to this embodiment, as described above, the fastener attachment / detachment jig 1 pulls up the tip 42 of the lever rod 4 in the direction of the arrow as shown in FIGS. 7 and 8 with the support plate 6 fitted into the rear groove PG of the sound-insulating panel P1. This generates a reaction force from the rear groove PG via the support plate 6, which pulls down the pull-in rod 3 connected by the shaft 60 journaled on the base end 41 of the lever rod 4. Furthermore, the hanging plate 2 secured to the upper end 31 of the pull-in rod 3 and the fastener 10 attached to its end 21 are pulled between the sound-insulating panel P1 and the flange of the support post H1 and are installed.

[0046] At this time, as shown in Figure 8, tip 51 of anti-outward tipping plate 5 slides along the inside of the outer flange of support H1 in the direction of the arrow in the figure, drawing an arc around axis 60. This stabilizes the rotational and swinging action of lever rod 4, preventing the entire fastener removal jig 1 from tipping outward due to the swinging action of lever rod 4.

[0047] <How to remove the fixing bracket> Next, a method for removing a fastener according to an embodiment of the present invention will be described. In the method for removing a fastener according to this embodiment, the end 21 of the hanging plate 2 is inserted into the loop portion 10a of the existing fastener 10 attached to the existing sound-insulating panel P1. Then, as with the fastener installation method, the support plate 6 is fitted into the rear groove PG of the existing sound-insulating panel P1, and the tip 51 of the outward collapse prevention plate 5 is inserted between the sound-insulating panel P1 and the flange of the support post H1.

[0048] Thereafter, with the support plate 6 fitted into the rear groove PG of the sound-insulating panel P1, the fixing bracket removal jig 1 pulls down the tip end 42 of the lever rod 4 in the direction opposite to the arrow in Figures 7 and 8. This allows a reaction force to be obtained from the rear groove PG via the support plate 6, so that the pull-in rod 3 connected by the shaft 60 journaled on the base end 41 of the lever rod 4 is pulled up, and the fixing bracket 10 attached to the end 21 of the hanging plate 2 is pushed up from between the sound-insulating panel P1 and the flange of the support post H1, allowing it to be removed.

[0049] In this way, according to the fastener removal method of this embodiment, existing fasteners that could not be removed using the conventional fastener retraction jig described in Patent Document 3 can be easily removed using the fastener removal jig 1. This makes it possible to remove existing soundproofing panels easily, quickly, and efficiently without making any noise.

[0050] According to the fastener removal jig 1 and fastener installation method using the same according to this embodiment described above, it is no longer necessary to insert the fastener 10 into the gap between the support pillar H1 and the sound-insulating panel P1 by hitting it with a hammer or the like, thereby preventing the generation of impact noise and reducing noise during sound-insulating wall installation work.

[0051] Furthermore, according to the fastener removal method of an embodiment of the present invention, existing fasteners that could not be removed using the conventional fastener retraction jig described in Patent Document 3 can be easily and efficiently removed using the aforementioned fastener removal and installation jig 1.

[0052] Furthermore, the conventional fastener retraction jig described in Patent Document 3 has a configuration in which one hook is hooked onto a lower fastener to retract it, which poses a problem that it cannot be used to install fasteners on the lowest soundproof panel. In contrast, in the fastener installation jig 1 and fastener installation method using it according to an embodiment of the present invention, the fastener installation jig 1 is attached by fitting the support plate 6 into the back groove PG of the soundproof panel P1. Therefore, the fastener installation jig 1 can be used efficiently and quietly to install fasteners on the lowest soundproof panel.

[0053] Furthermore, the fastener retraction jig described in Patent Document 3 was configured to retract the fasteners of the upper sound-insulating panel by hooking onto the fasteners that secure the lower sound-insulating panel, requiring a large jig that exceeded the height of the sound-insulating panel. In contrast, as described above, fastener removal jig 1 is configured to obtain a reaction force from the sound-insulating panel's own weight by fitting support plate 6 into the rear groove PG of sound-insulating panel P1, so it can be a jig that is about half the size of sound-insulating panel P1 in the height direction. This makes fastener removal jig 1 compact and easy to carry.

[0054] Furthermore, the fixture retracting jig described in Patent Document 3 has a limited rotation direction for its lever mechanism, meaning that only one of a pair of fixtures can be attached. This meant that two fixture attachment / detachment jigs with different rotation directions had to be brought to the work site. In contrast, fixture removal / attachment jig 1 has a hanging plate 2 attached so that both longitudinal ends 21 protrude from the sides of the pull-in rod 3. Furthermore, the pull-in rod 3 and lever rod 4 are connected to an axis 50 via an anti-fall plate 5 so that they can swing more than 180 degrees. This means that one fixture removal / attachment jig 1 can be used to attach or remove either the left or right fixture 10, eliminating the need to carry a pair of left and right jigs.

[0055] The fastener removal and installation jig according to the present embodiment and the fastener installation and removal methods using the same have been described in detail above, but the above-described and illustrated embodiments are merely specific examples of the present invention, and therefore the technical scope of the present invention should not be interpreted as being limited by them. [Explanation of symbols]

[0056] 1: Fixture removal jig 2: Hanging board 20: Central part 21: (Both) ends 3: Retracting rod 31: Upper end 32: Bottom end 4: Lever rod 41: Proximal end 42:Tip 5: External fall prevention board 50: Axis 51: Tip 6: Support plate 60: Axis 7: Protective cap 8: Hook 9: Spacer 10: Fixing bracket 10a: Loop section 11: Top H1: Prop P1: Soundproof panel

Claims

1. A fixture removal and installation jig for removing or retracting a fixture that is interposed in a gap between a support column of a sound insulation wall and a sound insulation panel and installing it in the gap, The device is provided with a pull rod made of a rod material and a lever rod made of a rod material that is swingably connected to the pull rod, A hook plate is fixed to the upper end of the pull rod and is inserted into the folded loop portion of the fixing metal fitting to hang the fixing metal fitting, A support plate is rotatably supported on the base end of the lever rod, and is fitted into the rear groove of the sound-proof panel to absorb the reaction force. A fixture removal and attachment jig characterized by the above.

2. The hanging plate is attached to the pull-in rod so that both ends thereof protrude, The pull rod and the lever rod are connected so as to be able to swing 180 degrees or more.

2. The fixture removal and installation jig according to claim 1.

3. The pull-in rod and the lever rod are connected to each other so as to be able to swing freely via a strip-shaped anti-fall plate, and the protruding length of the anti-fall plate from the pull-in rod is set to be longer than the protruding length of both ends of the hanging plate from the pull-in rod.

3. The fixture removal and installation jig according to claim 2.

4. A hook is attached to the back of the pull-in rod to prevent it from accidentally falling during work.

4. A fixture removal and installation jig according to claim 1.

5. A method for installing a fixture in a gap between a support post and a sound insulation panel of a sound insulation wall, comprising the steps of: The fixture removal jig according to any one of claims 1 to 4 is attached to the rear groove of the sound insulation panel, and the lever rod is pulled up to pull down the hanging plate fixed to the pull-in rod, thereby retracting and installing the fixture attached thereto. A method for installing a fixing bracket, comprising:

6. A method for removing an existing fastener installed in a gap between a support column and a sound insulation panel of an existing sound insulation wall, comprising: The fixture removal jig according to any one of claims 1 to 4 is attached to the rear groove of the sound insulation panel, and the lever rod is pulled down to push up the hanging plate fixed to the pull rod and remove the fixture attached thereto. A method for removing a fixing bracket, comprising:

Images