JP3118878U - Fixing screw temporary fixing member - Google Patents

Abstract

An object of the present invention is to provide a fixing screw temporary fixing member that is excellent in workability of temporary fixing and temporary fixing, can be supplied at a low cost, and is economical.
A fixing screw temporarily fixing a fixing screw that is inserted into a screw insertion hole of a floor slab when a joining plate is screwed to the upper part of the floor slabs using a steel panel. It is a fixing member 10. The fixing screw temporary fixing member 10 is provided on a belt-like temporary fixing main body 11 having a predetermined thickness and width, and on the end side of the temporary fixing main body 11, and is engaged with the outer periphery of the screw portion of the fixing screw 7. It consists of engaging hole portions 12a and 12b to be fixed, and cutout portions 14a and 14b formed in fracture portions 19a and 19b in the vicinity of the engaging hole portions 12a and 12b. With the fixing screw temporarily fixed in the engagement hole portion on one side of the temporarily fixed main body, the end on the other side of the temporary fixed main body is pulled to break the rupture portion and release the temporarily fixed state.
[Selection] Figure 2

Description

  The present invention relates to a fixing screw temporary fixing member for temporarily fixing a fixing screw to a structure. More specifically, the present invention relates to a fixing screw temporary fixing member suitable for an operation for connecting a floor slab using a steel panel via an attachment plate.

  Conventionally, as a construction method for road bridges, etc., a composite slab of steel and concrete in which a plurality of steel decks are installed on the main girder and concrete is placed on these steel decks is widely known. Yes. In order to construct this composite slab, it is necessary to connect the steel slabs installed on the main girder to each other. Each steel slab is connected by attaching an attachment plate to the connecting part of the steel slab and fastening these members together by screw fixing means (for example, bolts and nuts). Done.

As a fixing screw for this screw fixing means, there are a case where a stud bolt is used and a case where a normal bolt is used. At present, a normal bolt is used because it is economical and strong. There are many cases.
When connecting steel slabs with ordinary bolts and nuts, a work plate is provided in advance on the bottom surface of the steel slab by attaching a connecting plate on the connecting part between the steel slabs to be connected to each other. The worker who is arranged to insert the bolt through the screw insertion hole on the lower surface of the steel slab from the bottom to the top with the bolt head facing down. Then, another worker arranged at the upper part of the steel deck slab is screwed with a nut into the screw portion of the bolt protruding above the splicing plate. In many cases, the nuts are fastened and fixed, and the respective steel decks are connected by bolts and nuts.

  In a construction method in which a plurality of steel decks are sequentially lifted from the ground onto the main girder, and these steel decks are joined together on the girder, after the plurality of steel decks are installed on the girder, The plate itself will serve as a working scaffold. Therefore, a scaffold for constructing the floor slab is substantially unnecessary. Therefore, in such a construction method using a steel slab, although it is not necessary to construct a work scaffold on the lower surface of the steel slab, in actuality, when connecting the steel slab, Since the operator has to insert the bolt upward from the work scaffold on the bottom surface of the floor slab, a work scaffold is necessary, which may cause problems in terms of work efficiency and safety.

  In order to eliminate such work, it is preferable to use a construction method in which the bolt is temporarily fixed to the bottom steel plate. In such a construction method, when a plurality of steel decks installed on the main girder are connected to each other on the main girder, even if no scaffold is provided on the lower surface of the steel deck, the steel deck is preliminarily provided. Since the bolt inserted upward from the lower surface of the steel plate is temporarily fixed, the steel decks can be connected to each other by tightening the nut from the top of the steel deck.

  As a conventional temporary fixing member, the bolt is inserted upward from the bottom surface of the bolt hole of the steel floor slab so that the head is down, so that it can be screwed to the bolt screw part protruding from the surface of the steel floor slab. A washer having a thread groove on the inner periphery is known (see, for example, Patent Document 1). Then, a filler plate having a thickness larger than that of the washer is provided around the washer on the surface of the steel slab, and then an attachment plate is disposed on the connecting portion of both steel slabs, and protrudes on the steel slab. The steel decks can be connected to each other by screwing nuts onto the bolt screw portions.

There is also a drop-preventing member comprising a substantially horseshoe-shaped thin metal plate provided with a locking piece that engages in the screw groove of the bolt screw portion, and a pulling wire on a loop connected to the base end portion of the metal plate. It is known (see, for example, Patent Document 2). Temporary fasteners for beam joining bolts comprising a C-type or E-type retaining ring that is locked to the base of the threaded portion of the beam joining bolt and a string attached to this retaining ring are also known (for example, patents). Reference 3).
JP 11-324199 A JP 2001-270854 A Utility Model Registration No. 3069988

  However, in the technique of Patent Document 1, the washer is provided with a thread groove on the inner periphery, which is substantially the same as the nut, and this washer is screwed to the bolt screw portion. In this process, it is necessary to insert washers into all the bolts and tighten them sufficiently. This requires a lot of work and time, and productivity and workability are not good. There is a problem. This method also has a problem that the working time is further increased because it is necessary to provide a thicker filler plate around the washer.

In practice, the fall prevention member of Patent Document 2 has a problem in that if it is used a plurality of times (for example, 4 to 5 times), kinks are generated in the wire portion. When the wire part is kinked, it is easy to break, and when it breaks, there is a problem that it is not easy to remove the horseshoe-shaped metal plate. Moreover, this fall prevention member has the problem that a lifetime is short for a price, and it is not economical.
The temporary fastener of Patent Document 3 has a configuration substantially similar to that of Patent Document 2, and there is a risk of causing the same problem.

The present invention has been made to solve the above-described conventional problems, and achieves the following object.
An object of the present invention is to provide a fixing screw temporary fixing member that is excellent in workability of a temporary fixing operation and a temporary fixing releasing operation to a structure, can be supplied at low cost, and is economical.

The present invention takes the following means to achieve the object.
The fixing screw temporary fixing member of Invention 1 is
A fixing screw temporary fixing member for temporarily fixing a fixing screw inserted into a screw insertion hole of the one structure when the other structure is screw-coupled to the upper part of the one structure. The screw temporary fixing member is provided with at least one temporary fixing main body that is a band-shaped member having a predetermined thickness and width, and at least one end side of the temporary fixing main body, An engagement hole portion that can be engaged and temporarily fixed; and a notch portion formed in a break portion in the vicinity of the engagement hole portion of the temporary fixation body; In the state in which the fixing screw is temporarily fixed, the other end portion of the temporary fixing main body is pulled, and the temporary fixing main body is started to break from the notch to break the breaking portion, thereby temporarily fixing. The feature is that it can be released.

The fixing screw temporary fixing member of the present invention 2 in the present invention 1,
The temporary fixing body has a predetermined dimension between the one structure and the other structure when the other structure is placed on the one structure around the temporary fixing hole. One or a plurality of protruding structure support protrusions are formed so as to form a space.

The fixing screw temporary fixing member of the present invention 3 is the present invention 1 or 2,
The temporary fixing main body is formed of one or more materials selected from a synthetic resin, a synthetic resin elastomer, and rubber.

The temporary fixing member of the fixing screw of the present invention 4 in the present inventions 1 to 3,
The one structure is a floor slab using a steel panel of a bridge, and the other structure is an attachment plate.

The temporary fixing member of the fixing screw of the present invention 5 in the present invention 1 to 4,
The temporary fixing main body can be colored in a predetermined color.

The temporary fixing member of the fixing screw of the present invention 6 is the present invention 5,
The predetermined color is a color that can alert an operator to a warning or warning.

  As described above, the fixing screw temporary fixing member of the present invention can securely fix the fixing screw temporarily by simply pulling the temporary fixing main body with the fixing screw temporarily fixed to the structure. It can be canceled. Moreover, it can be set in the temporarily fixed state by a simple operation by simply inserting the engaging screw into the engaging hole portion of the fixing screw temporary fixing member and engaging with the outer periphery of the fixing screw. Furthermore, after the screw connection between the first structure and the second structure is completed, the fixing screw temporary fixing member does not remain, and a reliable screw connection can be achieved. In addition, when the structure is a floor slab using a steel panel, the floor slab and the attachment plate are provided from the upper side of the floor slab using the copper panel without providing a scaffolding or the like in the lower part of the floor slab using the copper panel. Can be easily screwed together.

  The fixing screw temporary fixing member can be manufactured with a synthetic resin capable of mass production, and can be economically inexpensive. Further, the fixing screw temporary fixing member can be colored, and by coloring the warning screw or a warning color, it is possible to prevent forgetting to remove the fixing screw temporary fixing member. Furthermore, the fixing screw temporary fixing member is made of a material that is easy to break, such as a synthetic resin or rubber, and is formed in a predetermined width and thickness dimension that can be easily broken. is there. In addition, the structure support protrusion provided in the vicinity of the engagement hole is in contact with only the other structure (attachment plate) and the structure support protrusion, so that when the other structure is mounted, the fracture portion Since no load is applied, the work of releasing the temporary fixation by breakage is further facilitated.

Hereinafter, embodiments of the fixing screw temporary fixing member of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing a state in which one structure (a floor slab using a steel panel of a bridge) and the other structure (attachment plate) are temporarily fixed by a fixing screw temporary fixing member of the present invention. FIG. 2 is a plan view showing the fixing screw temporary fixing member of the present invention, FIG. 3 is a side view of the fixing screw temporary fixing member, and FIGS. 4 to 8 are views of the bridge by the fixing screw temporary fixing member. It is explanatory drawing which shows in order the coupling | bonding method of the floor slab and attachment plate using a steel panel. FIG. 9 is a plan view showing another embodiment of the fixing screw temporary fixing member. FIG. 10 is a plan view showing still another embodiment of the fixing screw temporary fixing member.

  As shown in FIG. 1 and FIG. 5, a bolt 7 as a fixing screw is inserted into a floor slab (hereinafter referred to as a floor slab) 1A, 1B using a steel panel as one structure. Is temporarily fixed by a fixing screw temporary fixing member (hereinafter referred to as a temporary fixing member) 10. After the bolt 7 is temporarily fixed by the temporary fixing member 10, the state where the attachment plate 5 which is the other structure is attached is as shown in FIG. The bolt 7 is preferably a Torcia-type bolt. The floor slab 1 </ b> A and the floor slab 1 </ b> B are connected by an attachment plate 5. That is, the attachment plate 5 is attached to the connecting portion of the floor slab 1A and the floor slab 1B, and the attachment plate 5 and the floor slab 1A, and the attachment plate 5 and the floor slab 1B are respectively connected to a plurality of bolts 7 and nuts. It is connected by tightening and fixing 8.

  The temporary fixing main body 11 of the temporary fixing member 10 is a belt-like member formed with a predetermined width w (for example, 25 mm) and a predetermined thickness t (for example, 2 mm) as shown in FIGS. It is good to form with materials, such as resin, a synthetic resin elastomer, and rubber | gum. For example, polyethylene (PE), ethylene vinyl acetate copolymer resin (EVA), etc. are suitable for the material of the temporary fixing main body 11, but polypropylene (PP), polyamide (PA), acrylonitrile butadiene styrene resin (ABS). Resin) and general synthetic resin such as polyacetal (POM). Moreover, rubbers such as natural rubber (NR), chlorobrene rubber (CR), and ethylene propylene rubber (EPDM) may be used. Furthermore, various synthetic resin elastomers such as styrene, olefin, urethane, polyester, and polyamide may be used. In addition, it is preferable to select this material in consideration of post-processing when discarded after use.

In this way, the temporary fixing member 10 can be manufactured economically by using a synthetic resin that can be mass-produced.
Further, the temporary fixing member 10 can be colored. By coloring the temporary fixing member 10 in a color that alerts or warns, it is possible to prevent the temporary fixing member 10 from being forgotten. The color is preferably, for example, yellow, red, yellow and black stripes, or the like.

  Engagement holes 12a and 12b formed on the both ends of the temporary fixing body 11 with a predetermined amount smaller diameter (for example, about 1 mm smaller diameter) than the outer periphery of the threaded portion of the bolt 7, a predetermined angle θ (for example, 90 degrees), Notch portions (notch portions) 14a and 14b formed at a predetermined depth a (for example, 1 mm) are formed. The engagement hole portions 12a and 12b have hole diameters such that the bolt 7 can be inserted and the bolt 7 does not fall off in the inserted state. For example, the inner diameter dimensions (hole diameters) of the engagement holes 12a and 12b are smaller by a predetermined amount than the outer periphery dimensions of the screw part. When the bolt 7 is inserted, it is elastically deformed and is engaged with the outer periphery of the screw part of the bolt 7. Is possible. This predetermined amount may be any as long as it can be engaged without dropping due to its own weight or the like when the bolt 7 is temporarily fixed.

  The notch portion 14b is for easily breaking the fracture portion 19b in the vicinity of the engagement hole portion 12b on the other end portion 11b side when the one end portion 11a of the temporarily fixed main body 11 is pulled. The notch portion 14 b is provided on the other end portion 11 b side in the longitudinal direction of the temporarily fixing main body 11. The notch portion 14a is for easily breaking the fracture portion 19a in the vicinity of the engagement hole portion 12a on the one end portion 11a side when the other end portion 11b of the temporarily fixed main body 11 is pulled. The notch portion 14 a is provided on one end portion 11 a side in the longitudinal direction of the temporary fixing main body 11. The dimensions a and θ of the notches 14a and 14b are such that when one end 11a (or the other end 11b) of the temporarily fixing main body 11 is pulled, the other end 11b (or one end 11a) side is pulled. Needless to say, the engagement hole 12b (or the engagement hole 12a) may have any shape and size that can easily break the break 19b (or the break 19a).

  In the vicinity of each engagement hole 12a, 12b of the temporarily fixed main body 11, there are one or a plurality of (for example, one in FIG. It is called a protrusion.) 13a and 13b are formed. The protrusions 13a and 13b are for securing a certain space in the vicinity of the engaging hole portions 12a and 12b even when the attachment plate 5 is placed. When the attachment plate 5 is placed, the rupture portions 19a and 13b are provided. It is also for not applying a load to 19b. The shape of the portions of the protrusions 13a and 13b that contact the attachment plate 5 may be spherical as shown in FIG. 3, or may be other shapes such as a flat shape.

The work procedure for joining floor slabs with the temporary fixing member according to the present embodiment will be described with reference to FIGS.
As shown in FIG. 4, after inserting the bolt 7 into the bolt insertion hole of the floor slab 1A, 1B from the lower surface side of the floor slab 1A, 1B so that the head 7a faces downward, The engagement hole portion of the temporary fixing member 10 is inserted and temporarily fixed to the outer peripheral portion of the thread portion of the bolt 7 protruding to the upper surface side of 1B. In this embodiment, the description will be made assuming that the bolt 7 is temporarily fixed to the engagement hole 12a. In this way, all the bolts 7 are temporarily fixed by the temporary fixing member 10 so as not to fall off from the steel floor slabs 1A and 1B. This temporary fixing work may be performed before the connection work, or may be performed in a factory that manufactures a floor slab. The connecting portions of the adjacent floor slabs 1A and 1B are juxtaposed.

As shown in FIG. 5, the attachment plate 5 in which the bolt insertion hole is formed is arranged in the connecting portion of the floor slabs 1 </ b> A and 1 </ b> B, and the screw portion of each bolt 7 passes through the bolt insertion hole of the attachment plate 5. Attaches so as to protrude upward.
As shown in FIG. 6, washers 9 are inserted into the screw portions of all bolts 7 protruding on the bolt insertion holes of the attachment plate 5, and nuts 8 are screwed in. At that time, the nut 8 is preferably not temporarily screwed into the threaded portion 5 of the bolt 7 but in a temporarily fixed state in the middle so that the attachment plate 5 is movable.

As described above, the state where all the nuts 8 are screwed into the temporarily fixed positions is a state where the attachment plate 5 can be moved. For example, the temporary fixing member 10 in which the engagement hole 12a on the one end 11a side is engaged with the threaded portion of the bolt 7 is pulled while holding the portion on the other end 11b side. Then, the temporarily fixed main body 11 starts to break from the notch portion 14 a, the broken portion 19 a breaks, and the temporarily fixed member 10 can be detached from the bolt 7. Further, when the temporarily fixing main body 11 is pulled, the temporarily fixing member 10 is detached from the bolt 7 and the temporarily fixed state is released (see FIG. 7).
In this way, when all the temporary fixing members 10 are pulled out from the threaded portions of the bolts 7, as shown in FIG. 7, the bolts 7 once fall down to a position where the washer 9 contacts the attachment plate 5. Since the nut 8 is temporarily fixed to the bolt 7, the bolt 7 does not drop out from the bolt insertion holes of the floor slabs 1 </ b> A and 1 </ b> B and the attachment plate 5.

Finally, as shown in FIG. 8, all the nuts 8 are fastened and fixed to the bolts 7, whereby the connecting portions of the floor slabs 1 </ b> A and 1 </ b> B and the attachment plate 5 can be fixed with the bolts 7.
As described above, the operation of tightening and fixing the nut 8 to the bolt 7 and the operation of removing the temporary fixing member 10 from the bolt 7 can be performed from the upper side of the floor slabs 1A and 1B, and the operation is easy.

[Other Embodiments of Fixing Screw Temporary Fixing Member]
FIG. 9 is a plan view showing another embodiment of the temporary fixing member.
The temporary fixing member 20 has two engagement holes formed at both ends of the temporary fixing main body 21. The temporary fixing main body 21 is formed with engagement holes 22a and 25a, notches 24a and 26a, and fracture portions 29a and 29b on one end 21a side. Engagement hole portions 22b and 25b, notch portions 24b and 26b, and fracture portions 29c and 29d are formed on the other end portion 21b side. Therefore, the temporary fixing main body 20 can temporarily fix the bolt 7 four times. That is, by increasing the number of engagement holes, the number of times that temporary fixing and temporary fixing can be released with one temporary fixing member can be increased, which is economical. As shown in other embodiments, the temporary fixing member may not be provided with a protrusion.

For example, the bolt 7 is inserted through the engagement hole 22a, and the first temporary fixing is performed. After the nut 8 is screwed into the bolt 7, when the other end 21 b side is pulled, the notch 24 a breaks and the break 29 a of the temporarily fixed main body 21 breaks.
Next, the second temporary fixing can be performed by inserting the bolt 7 through the engagement hole 25a. After the nut 8 is screwed into the bolt 7, when the other end 21 b side is pulled, the notch 26 a breaks, and the break 29 b of the temporary fixing main body 21 breaks.

  Further, the bolt 7 is inserted into the engagement hole 22b, and the third temporary fixing is performed. After the nut 8 is screwed into the bolt 7, if one end 21 a side is pulled, the notch 24 b breaks, and the breakage 29 c of the temporary fixing main body 21 breaks. Further, the temporary fixing main body 21 can perform the fourth temporary fixing by inserting the bolt 7 through the engagement hole 25b. After the nut 8 is screwed into the bolt 7, if one end 21 a side is pulled, the notch 26 b breaks, and the fractured portion 29 d of the temporary fixing main body 21 breaks.

[Still another embodiment of fixing screw temporary fixing member]
FIG. 10 is a plan view showing still another embodiment of the temporary fixing member.
The temporary fixing member 30 has two engaging hole portions formed at both ends of the temporary fixing main body 31. The temporarily fixing main body 31 is formed with engagement holes 32a and 35a, notches 34a and 36a, projections 33a, 33b and 33c, and fracture portions 39a and 39b on one end 31a side. Engagement hole portions 32b and 35b, notch portions 34b and 36b, protrusions 33d, 33e, and 33f, and fracture portions 39c and 39d are formed on the other end portion 31b side. That is, the projections 33a to 33f are added to the other embodiments described above. In this embodiment, the explanation is made with one or two protrusions provided, but three or more protrusions may be provided.

In this case, since the attachment plate 5 is in contact with only the protrusion, no load is applied to the fractured portion when the attachment plate 5 is placed. It is easier than the form.
The temporary fixing member 30 can also temporarily fix the bolt 7 four times. Since the method of use is the same as in the other embodiments described above, a detailed description is omitted.

  In addition, although the description has been given in the form in which one or two engagement hole portions are formed on both sides of the temporarily fixed main body, three or more engagement hole portions are formed on both sides of the temporary fixed main body. Also good.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. It goes without saying that changes can be made without departing from the purpose and spirit of the present invention.

FIG. 1 is a plan view showing a state in which a floor slab using a steel panel of a bridge and an attachment plate are temporarily fixed by a fixing screw temporary fixing member of the present invention. FIG. 2 is a plan view showing a fixing screw temporary fixing member of the present invention. FIG. 3 is a side view of the fixing screw temporary fixing member. FIG. 4 is an explanatory view showing a state in which the bolts are temporarily fixed by sequentially showing the method of joining the floor slabs with the fixing screw temporary fixing member. FIG. 5 is an explanatory view showing a state in which floor slabs are joined in order by a fixing screw temporary fixing member and a joining plate is attached. FIG. 6 is an explanatory view showing a state in which floor slabs are joined in order by a fixing screw temporary fixing member, and a nut is screwed halfway into a bolt. FIG. 7 is an explanatory view showing a state in which the floor slabs are joined in order by the fixing screw temporary fixing member and the temporary fixing member is detached. FIG. 8 is an explanatory view showing a method of joining floor slabs with a fixing screw temporary fixing member in order, and a state in which the floor slab and the attachment plate are fastened and fixed with bolts. FIG. 9 is a plan view showing another embodiment of the fixing screw temporary fixing member. FIG. 10 is a plan view showing still another embodiment of the fixing screw temporary fixing member.

Explanation of symbols

1A, 1B ... Floor slabs using steel panels for bridges 5 ... Connecting plate 7 ... Fixing screws (bolts)
8 ... Nuts 10, 20, 30 ... Fixing screw temporary fixing members 11, 21, 31 ... Temporary fixing main bodies 12a, 12b, 22a, 22b, 25a, 25b, 32a, 32b, 35a, 35b ... Engaging hole 13a, 13b, 33a, 33b, 33c, 33d, 33e, 33f ... structure support protrusion (attachment plate support protrusion)
14a, 14b, 24a, 24b, 26a, 26b, 34a, 34b, 36a, 36b ... Notch (notch)
19a, 19b, 29a, 29b, 29c, 29d, 39a, 39b, 39c, 39d ... fracture portion

Claims (6)

Fixing for temporarily fixing the fixing screw (7) inserted through the screw insertion hole of the one structure when the other structure (5) is screwed to the upper part of the one structure (1A, 1B). Screw temporary fixing member (10),
The fixing screw temporary fixing member is provided with at least one temporary fixing main body (11) which is a band-shaped member having a predetermined thickness and width, and at least one end side of the temporary fixing main body. Engaging hole portions (12a, 12b) that can be temporarily fixed by engaging with the outer periphery of the screw portion, and notches formed in the fracture portions (19a, 19b) in the vicinity of the engaging hole portion of the temporary fixing main body. (14a, 14b)
With the fixing screw temporarily fixed in the engagement hole of the temporary fixing main body, the other end of the temporary fixing main body is pulled, and the temporary fixing main body is started to break from the notch. The fixing screw temporary fixing member, wherein the fracture portion is broken so that the temporarily fixed state of the fixing screw can be released. In the fixing screw temporary fixing member according to claim 1,
The temporary fixing body has a predetermined dimension between the one structure and the other structure when the other structure is placed on the one structure around the temporary fixing hole. A fixing screw temporary fixing member, wherein one or a plurality of protruding structure support protrusions are formed so as to form a space. In the fixing screw temporary fixing member according to claim 1 or 2,
The temporary fixing main body is made of one or more materials selected from a synthetic resin, a synthetic resin elastomer, and a rubber material. In the fixing screw temporary fixing member according to any one of claims 1 to 3,
The one structure is a floor slab using a steel panel of a bridge, and the other structure is an attachment plate. A fixing screw temporary fixing member. In the fixing screw temporary fixing member according to any one of claims 1 to 4,
The fixing screw temporary fixing member, wherein the temporary fixing body can be colored in a predetermined color. The fixing screw temporary fixing member according to claim 5,
The fixing screw temporary fixing member, wherein the predetermined color is a color that can alert an operator to a warning or warning.

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