JP2024000031A - Fastening mechanism of lining plate and lining plate - Google Patents

Abstract

To provide a fastening mechanism of a lining plate and the lining plate capable of fastening a bolt by using an electric seaming device without changing the positions of a mounting hole and a hanging hole even when the size of a girder material is different.SOLUTION: A fastening mechanism of a lining plate is provided with a pipe member 20, a guide member 40 attached so that its tip protrudes inside of the pipe member 20, a fastening metal fitting 10 provided with a cylindrical body part 12 mounted with a nut 14 attached to the lower end and a latching part 11 of a length required for latching a lining plate 60 to a girder material 70, and the fastening metal fitting 10 screwed with the nut 14 to penetrate the body part 12 from above; and is equipped with guide grooves 13, 13' formed so that the tip of the guide member 40 is positioned on the side face of the body part 12 is provided, and the latching part 11 is moved from a position where it does not interfere with the girder material 70 to a position where it can latch the girder material 70 when the fastening bolt 30 is tightened, and the lining plate is provided with fastening mechanisms 1, 1'.SELECTED DRAWING: Figure 2

Description

The present invention relates to a fastening mechanism for a lining plate and a lining plate.

When constructing structures underground, such as subway construction, sewerage construction, etc., when excavating under the road surface or constructing underground structures, lining boards are laid on the ground surface as temporary road surface boards to secure traffic routes. be done. The lining plate is laid by erecting a girder made of H steel, for example, in an excavated area on the ground surface, placing the lining plate on top of the girder material, and tightening the lining using the fastening mechanism provided on the lining plate. It is installed by fixing the plates to the girders.

As a conventional lining plate fastening mechanism, there is one shown in FIG. 7, for example. FIG. 7 is a side view showing an example of a conventional lining plate fastening mechanism. A conventional lining plate fastening mechanism 100 includes a substantially L-shaped fastening fitting 101 that is hooked onto a flange portion 71 of a girder 70 made of H steel. A fastening bolt 103 is attached so as to pass through the lower surface 61 of the lining plate 60 toward the lining plate 60, and a nut 105 is attached to the threaded portion 106 of the fastening bolt 103. A nut 107 is arranged between the fastening fitting 101 and the lower surface 61 of the lining plate 60.

A hanging hole (not shown) into which a tip 110 of a special handle (not shown) for tightening the nut 105 can be inserted is bored in the upper surface (not shown) of the lining plate 60. The tip 110 of the handle is inserted through this hanging hole, and by turning the handle, the nut 105 is rotated to tighten the fastening bolt 103, and the fastening fitting 101 is latched and fixed to the flange portion 71 of the beam member 70. Note that the fastening metal fitting 101 before installation is located in a direction parallel to the girder 70, and by turning the nut 105, the fastening metal fitting 101 is rotated by 90 degrees, and the tip moves to the lower side of the girder material 71. However, by further tightening the nut 105, the fastening fitting 101 is securely latched to the beam member 71.

Various types of lining plate fastening mechanisms are available in addition to the one shown in FIG. 7, including those shown in Patent Documents 1 to 3, for example. In all of Patent Documents 1 to 3, springs are used.

Patent No. 6703178 Patent No. 5629396 Patent No. 3382412

In the conventional lining plate fastening mechanism shown in Figure 7, the mounting position differs depending on the size of the girder, especially the length of the flange, and there are mounting holes and handles for attaching bolts to the bottom of the lining plate. It was necessary to re-drill the position of the hanging hole for inserting the tip of the beam depending on the girder material used. Furthermore, since the bolts were manually tightened using a special handle, the fastening force was weak and there was a risk of loosening, and if the bolts were to loosen, there was a possibility that the fastening fittings would fall. Furthermore, since the fastening work was done manually, the work took a long time.

Therefore, even if the size of the girder material is different, there is no need to change the position of the mounting holes or hanging holes, and the lining board allows bolts to be tightened using an electric tightening device such as an impact driver. The purpose of this invention is to provide a fastening mechanism and a lining plate for. In addition, although the fastening mechanisms are installed near each of the four corners of the lining plate, the electric tightening device allows the fastening fittings to rotate in different directions even if the nut is tightened in the same direction. The purpose of the present invention is to provide a board fastening mechanism and a lining board.

In order to solve the above problem, the present invention as set forth in claim 1 provides a fastening mechanism for a lining plate for fixing a lining plate to a girder, in which the lining plate is attached so as to penetrate through the lower surface of the lining plate. a guide member attached to a side surface of the pipe member such that its tip protrudes into a space inside the pipe member; and a cylindrical main body inserted into the inside of the pipe member in the axial direction. a fastening metal fitting having a length necessary for hooking the lining plate to the girder on the upper side of the nut disposed at the lower end of the main body; A fastening bolt is provided on a side surface of the main body of the fastening fitting, the fastening bolt passing through the main body of the fastening fitting from above and threadedly engaged with the nut, which is disposed inside the pipe member. a guide groove formed in such a way that the tip of the guide member is positioned in order to move the hooking part from a position where it does not interfere with the beam material to a position where the beam material can be locked when the beam is tightened; is provided, and when the fastening bolt is tightened, the rotation of the main body portion is controlled by the guide member that relatively moves in the guide groove, and the hook portion is moved from a position where it does not interfere with the girder member to the girder member. It is characterized by being adapted to move the material to a position where it can be hung.

In order to solve the above problem, the present invention as set forth in claim 2 provides the lining plate fastening mechanism as set forth in claim 1, wherein the guide groove is formed so that the main body rotates approximately 90 degrees. It is characterized by

In order to solve the above problem, the present invention as set forth in claim 3 provides a lining board fastening mechanism as set forth in claim 1, wherein the pipe member is reinforced with reinforcing ribs when attached to the lining board. It is characterized by the presence of

In order to solve the above problem, the present invention as set forth in claim 4 provides a fastening mechanism for a lining plate as set forth in claim 1, in which the guide groove is arranged in a tightening direction when the fastening bolt is tightened. It is characterized in that it is formed to rotate in the same direction, or in a direction opposite to the tightening direction when the fastening bolt is tightened.

In order to solve the above problem, the present invention as set forth in claim 5 provides a lining board provided with a lining board fastening mechanism according to any one of claims 1 to 4, in which the lining board is fastened. Mechanisms are respectively arranged near the four corners of the lining board, and the hooking portions of each of the fastening members are arranged parallel to the girder material, with the tips facing inward of the lining board. , the guide groove of each of the fastening members is formed in such a shape that when the main body rotates approximately 90 degrees, the hooking portion moves to a position where the girder is hooked. .

In order to solve the above problem, the present invention as set forth in claim 6 provides a lining board according to claim 5, in which a bottom surface of the lining board is provided with In order to protect the fastening mechanism of the lining plate, the protective member is provided with a length such that it is located below the lower end position of the fastening mechanism of the lining plate.

In order to solve the above problem, the present invention as set forth in claim 7 provides a lining board according to claim 6, in which the protection member is formed in a substantially L-shape in plan view, and one side of the lining board is formed in a substantially L-shape in plan view. It is characterized in that it is arranged in the vicinity of the fastening mechanism of the lining plate so as to be parallel to the side surface of the lining plate and not to impede rotation of the hooking part.

According to the lining plate fastening mechanism and lining plate according to the present invention, since the guide groove is provided in the main body of the fastening fitting, the hooking part can be moved from a position where it does not interfere with the girder material to a position where the girder material can be latched. This has the effect that movement can be executed reliably. In addition, since no spring is used, it can be operated reliably. In addition, since the shape of the guide groove differs depending on the position at which the fastening mechanism is attached to the lining board, the fastening metal fittings can be rotated in different directions even if the winding direction by the electric seaming device is the same. This has the effect of significantly reducing work time. In addition, since the hanging part has the necessary length and strength to hang on the girder material, there is no need to change the position of the mounting hole or hanging hole even if the size of the girder material is different. effective.

FIG. 1 is a plan view of an embodiment of a lining plate provided with a lining plate fastening mechanism according to the present invention. FIG. 2 is an explanatory front view of the lining plate fastening mechanism according to the present invention. FIG. 3 is an explanatory side view of the lining plate fastening mechanism according to the present invention. Figure 4 (a) is a side view of the fastening metal fitting, (b) is a side view of another fastening metal fitting, (c) is a developed view of the main body of the fastening metal fitting, and (d) is a developed view of the main body of the other fastening metal fitting. It is a diagram. FIG. 5 is a side view of the pipe member. Fig. 6(A) is a front view of the fastening fitting when the lining board is installed, Fig. 6(A') is a side view of the fastening fitting when the lining board is installed, and Fig. 6(B) is a front view of the fastening fitting when it is rotated. (B') is a side view of the fastening fitting when it is rotated, (C) is a front view of the fastening fitting when tightening is completed, and (B') is a side view of the fastening fitting when tightening is completed. FIG. 7 is a side view of a conventional fastening fitting.

A fastening mechanism for a lining plate and a lining plate according to the present invention will be described in detail below based on a preferred embodiment. First, the lining plate fastening mechanism will be explained with reference to the drawings.

[Fascinating mechanism of lining board]
As shown in FIGS. 2 and 3, the lining board fastening mechanism (hereinafter referred to as the "fastening mechanism") 1 roughly includes a fastening fitting 10, a pipe member 20, and a fastening bolt 30. There is. As shown in FIG. 1, the fastening mechanisms 1 are arranged near the four corners of the lining plate 60, which is formed into a substantially rectangular shape. In addition, in FIG. 1, there are two types of fastening mechanisms in which the rotation direction of the fastening metal fitting 10 differs depending on the location, specifically, a fastening mechanism 1 in which the rotation direction of the fastening metal fitting 10 is clockwise, and a fastening mechanism 1 in which the rotation direction of the fastening metal fitting 10 is clockwise. A fastening mechanism 1' whose direction is counterclockwise is attached, the details of which will be described later.

The pipe member 20 is a hollow cylindrical member, and is attached near the four corners of the lining plate 60 so as to pass through attachment holes 66 provided in the lower surface 61 of the lining plate 60. . The side surface of the pipe member 20 located on the upper side of the lower surface 61 of the lining plate 60 is reinforced by a reinforcing rib 25 that is approximately triangular in side view. The reinforcing rib 25 is fixed so that its bottom side (adjacent side) is in contact with the lower surface 61 of the lining plate 60 and the opposite side is in contact with the side surface of the pipe member 20. Note that the shape of the reinforcing ribs 25 is not limited to this, and a plurality of reinforcing ribs 25 may be attached.

Further, a guide member 40 is arranged on the side surface of the pipe member 20 located on the lower side of the lower surface 61 of the lining plate 60. The guide member 40 is attached in a direction perpendicular to the axial direction of the pipe member 20 so that its tip protrudes into the space inside the pipe member 20. The leading end of the guide member 40 is disposed within guide grooves 13 and 13' provided in the main body 12 of the fastening fitting 10, which will be described later.

The fastener 10 includes a cylindrical main body 12 and a hook 11 extending in a direction perpendicular to the axial direction of the main body 12, and the main body 12 is inserted into the pipe member 20. be done. A guide groove 13 formed in a predetermined shape is provided on the surface of the main body portion 12. Further, a nut 14 is attached to the lower end side of the main body 12 and is screwed into a fastening bolt 30 that is attached so as to pass through the inside of the main body 12 . A hooking portion 11 is disposed above this nut 14 so that its bottom is in contact with the hooking portion 11 .

The hooking part 11 is attached to the main body part 12 so as to extend in a direction perpendicular to the axial direction of the main body part 12, and the front surface side is extended at the same height position on the proximal end side and the distal end side. However, the bottom side is shaped so that it slopes upward so that the thickness becomes thinner toward the tip. The shape of the hooking part 11 is not limited to that shown in the drawings, and any suitable shape such as a rectangular parallelepiped shape can be adopted. Here, the length and thickness of the flange portion 71 of the beam member 70 differ depending on its size. Therefore, the fastening mechanisms 1 and 1' are arranged on the lining board 60 at a position where they will not interfere even when the flange part 71 is the longest, and at the same time when the flange part 71 is the shortest. The length of the hooking portion 11 is set such that the flange portion 71 can be hooked even in the case where the hooking portion 11 is attached. Specifically, the length and thickness of the flange portion 71 of the girder member 70 are, for a long one, approximately 200 mm from the center and approximately 28 mm thick, and for a short one, approximately 150 mm from the center and approximately 28 mm thick. Although the length is 15 mm, this is just an example and is not limited to this. Further, it goes without saying that the hooking portion 11 needs to have enough strength to reliably fix the lining plate 60 to the girder 70.

The main body portion 12 has a guide groove 13 formed on its side surface. The guide groove 13 moves straight in the axial direction (upward side) from slightly above the proximal end side of the hooking part 11 with its lower end side moving in a direction that makes a 1/4 turn around the surface of the main body part 12 so as to be inclined in the middle. After that, it is formed so that it moves straight in the axial direction (upward side) again. As described above, the guide groove 13 is arranged such that the tip of the guide member 40 is inserted therein, and by tightening the fastening bolt 30, the main body 12 of the fastening fitting 10 is rotated in a predetermined direction. As described above, since the guide groove 13 is provided in the main body portion 12 and the vertical movement and rotation are controlled by the guide member 40, it is possible to prevent the fastening fitting 10 from rotating together with the tightening of the fastening bolt 30. can. As mentioned above, the thickness of the flange portion 71 varies depending on the girder material 70 used, for example, from 15 to 28 mm. The shape of the guide grooves 13, 13' is determined.

Here, in addition to the guide grooves 13 shown in FIGS. 1, 2 and 4(a) and 4(c), the guide grooves 13 shown in FIGS. 4(b) and 4(d) rotated by 1/4 in the opposite direction. 'There are two types. This is because, as will be described later, when the fastening bolt 30 is tightened, the fastening fitting 10 and the hooking part 11 rotate in the clockwise and counterclockwise directions. Specifically, the guide groove 13 shown in FIGS. 4(a) and 4(c) is clockwise, and the guide groove 13' shown in FIGS. 4(b) and 4(d) is rotated counterclockwise. The reason why two types of guide grooves 13 and 13' are prepared in this way is to change the rotation direction of the fastening metal fitting 10 and the hooking part 11 depending on the attachment position to the lining plate 60. 11 can be rotated by about 90 degrees.The reason why the hook part 11 of the fastening fitting 10 can be rotated by about 90 degrees is that the lining plate 60 is installed on the girder material 70 with the hook part 11 placed in a position where it does not interfere with the girder material 70, and then the hook part of the fastening fitting 10 is rotated. 11 to a position where the beam member 70 can be latched. The two types of fastening mechanisms 1 and 1' basically differ only in that the shapes of the guide grooves 13 and 13' are relatively symmetrical, so the necessary explanation will be given to the clockwise fastening fitting 10. Based on.

A nut 15 is further arranged below the nut 14 arranged at the lower end of the main body 12 of the fastening fitting 10 with a washer 16 interposed therebetween. The nut 15 is a so-called stepped nut, and the stepped nut is provided with a recess 15a into which the split pin 17 is inserted (see FIG. 2).

The fastening bolt 30 is inserted from the upper side to the lower side through the inside of the main body 12 of the fastening metal fitting 10 disposed inside the pipe member 20, and is screwed into the nuts 14 and 15 with its tip end. It is arranged so as to slightly protrude from the nut 15. A through hole 35 is provided on the distal end side of the fastening bolt 30, and the split pin 17 is inserted into the through hole 35 of the fastening bolt 30 through the recess 15a of the nut 15. This allows the nut 15 and the fastening bolt 30 to be integrated. This prevents the fastening fitting 10 from falling, and also allows the fastening fitting 10 to be moved upward by tightening the fastening bolt 30 without the tip of the fastening bolt 30 advancing from the nut 15. In particular, the fall prevention mechanism is very useful since it is difficult to visually check the condition of the fastener 10 during work. Note that a washer 50 is disposed at the upper end of the pipe member 20, and the washer 50 is interposed between the head of the fastening bolt 30 and the upper end of the pipe member 20. Furthermore, a hanging hole 63 is bored in the upper surface of the lining plate 60 on which the pipe member 20 is arranged, into which an electric tightening device is inserted and the fastening bolt 30 is tightened.

[Lining board with fastening mechanism]
The above-mentioned fastening mechanisms 1, 1' are arranged near the four corners of the lining plate 60, as shown in FIG. 1, but the clockwise or counterclockwise fastening mechanisms 1, 1' are as follows. It is arranged like this. That is, before being laid on the girder material 70, each of the hooking portions 11, 11 of the fastening mechanisms 1, 1' is in a position where the tips thereof face the inside of the lining board 60, and are not connected to the girder material 70. When the hooking parts 11, 11 are hooked to the flange part 71 of the beam member 70, the ends of the hooking parts 11, 11 are rotated approximately 90 degrees so that the ends of the hooking parts 11, 11 are aligned with the flange part 71 of the beam member 70. Fastening mechanisms 1 and 1' are arranged so as to be able to lock the flange portion 71. This is because by arranging the fastening mechanisms 1, 1' in this way, the hooking parts 11, 11 can be moved with the minimum rotation angle.

Further, a protection member 65 is attached to the lower side of the lower surface 61 of the lining plate 60 and has a length such that it is located further below the lower end position of the fastening mechanisms 1, 1'. The protection member 65 is provided to protect the fastening mechanisms 1, 1' from colliding with the lower lining board 60 when a plurality of lining boards 60 are stacked. It is being The protection member 65 is formed into a substantially L-shape in plan view, and is arranged so that one side is parallel to the side surface of the lining board 60 and so as not to hinder the 90° rotation of the hook portion 11. has been done. Note that the reference numeral 67 is a stopper for preventing the lining board 60 from shifting after the lining board 60 is installed.

[Operation of fastening mechanism]
The operation of the above-mentioned fastening mechanism 1 (clockwise) will be explained with reference to FIG. 6. The fastening mechanism 1' (counterclockwise) also operates basically the same except for the rotational directions of the hooking part 11 and the main body part 12, so the fastening mechanism 1 will be explained.

The lining plates 60 provided with the fastening mechanisms 1 and 1' are arranged adjacent to each other on the girders 70 installed in advance. At this time, the hooking part 11 is located in a position parallel to the flange part 71 so as not to interfere with the flange part 71 of the beam member 70 (FIGS. 6(A) and (A')).

Then, when an electric tightening device (not shown) is inserted through the hanging hole 63 and the fastening bolt 30 is tightened, the main body 12 of the fastening fitting 10 starts to move upward. At this time, since the guide member 40 attached to the pipe member 20 is interposed in the guide groove 13 formed in the main body part 12, the guide member 40 relatively guides the guide groove 13 without moving. As a result, the main body portion 12 rotates. Since the upper and lower ends of the guide groove 13 are arranged at positions approximately 1/4 turn from the surface of the main body 12, the main body 12 rotates approximately 90° clockwise, and as a result, the locking portion 11 The distal end side moves toward the flange portion 71 of the beam member 70 (FIGS. 6(B) and (B')). The reaction force when the fastening bolt 30 is tightened is handled by the portion (lap portion) where the main body portion 12 of the fastening fitting 10 and the pipe member 20 overlap (lap portion) and the reinforcing rib 25 . Thereby, it is possible to accurately accommodate differences in the thickness of the flange portions 71 of the beam members 70''.

Then, by further tightening the fastening bolt 30, the fastening fitting 10 moves upward, and the hooking part 11 comes into contact with the flange part 71 of the beam member 70, so that it is firmly fixed. Similarly, the other fastening mechanisms 1 and 1' are each fixed to the beam member 70.

As described above, according to the lining plate fastening mechanism and the embodiment of the lining plate according to the present invention, the hanging portion 11 can be moved from a position where it does not interfere with the girder material 70 to a position where the girder material 70 can be latched. This has the effect that movement can be executed reliably. In addition, since the shapes of the guide grooves 13, 13' are made different depending on the position where the fastening mechanisms 1, 1' are attached to the lining plate 60, even if the tightening direction is the same, the rotational direction of the fastening fitting 10 (in FIG. (see arrows) can be set in different directions, it is possible to use a common electric tightening device for both the two types of fastening mechanisms 1 and 1', and there is no need to change the device, reducing work time. This has the effect of significantly shortening the time. In addition, since the hooking part 11 has a length necessary for hanging on the girder 70, even if the length to the flange part 71 of the girder 70 is different, the position of the mounting hole 66 and the hanging hole 63 can be adjusted. There is no need to change.

[others]
As mentioned above, the preferred embodiments of the present invention have been described in detail, but the present invention is not limited to the specific embodiments described above, and within the scope of the gist of the present invention as described in the claims. , it goes without saying that various modifications and changes are possible.

1, 1' Fastening mechanism 10 Fastening fitting 11 Latching part 12 Main body parts 13, 13' Guide groove 14 Nut 15 Nut 16 Washer 17 Cotter pin 20 Pipe member 30 Fastening bolt 35 Through hole 40 Guide member 50 Washer 60 Lining plate 61 Lower surface 63 Hanging hole 65 Protective member 66 Mounting hole 67 Stopper

Claims (7)

In the lining plate fastening mechanism for fixing the lining plate to the girder material,
a pipe member attached to penetrate the lower surface of the lining board;
a guide member attached to a side surface of the pipe member such that its tip protrudes into the inner space of the pipe member;
A cylindrical main body is inserted into the inside of the pipe member in the axial direction, and a nut disposed at the lower end of the main body has an upper side for hooking the lining plate to the girder. a fastening metal fitting with a latch part of the length necessary for the
a fastening bolt that penetrates from above into the main body of the fastening fitting disposed inside the pipe member and is threadedly engaged with the nut;
Equipped with
The guide is provided on the side surface of the main body of the fastening fitting to move the hooking portion from a position where it does not interfere with the girder material to a position where the girder material can be latched when the fastening bolt is tightened. A guide groove is formed such that the tip of the member is located, and when the fastening bolt is tightened, rotation of the main body portion is controlled by the guide member that relatively moves in the guide groove, and the guide member moves relatively through the guide groove. A fastening mechanism for a lining plate, characterized in that the hooking portion moves from a position where it does not interfere with the girder material to a position where the girder material can be hooked. The lining plate fastening mechanism according to claim 1,
A fastening mechanism for a lining plate, wherein the guide groove is formed so that the main body rotates approximately 90 degrees. The lining plate fastening mechanism according to claim 1,
A fastening mechanism for a lining plate, wherein the pipe member is reinforced with reinforcing ribs when attached to the lining plate. The lining plate fastening mechanism according to claim 1,
The guide groove is formed to rotate in the same direction as the tightening direction when the fastening bolt is tightened, or to rotate in the opposite direction to the tightening direction when the fastening bolt is tightened. A fastening mechanism for a lining board, characterized in that it is formed in. A lining board comprising the lining board fastening mechanism according to any one of claims 1 to 4,
The fastening mechanism of the lining board is arranged near each of the four corners of the lining board,
The hooking portion of each of the fastening members is arranged such that the tip thereof is parallel to the girder material, and the tip thereof faces toward the inside of the lining plate, and the guide groove of each of the fastening members has a main body portion that is substantially parallel to the girder member. A lining board characterized in that the lining board is formed in such a shape that when rotated by 90 degrees, the latching part moves to a position where the spar material is latched. In the lining board according to claim 5,
The bottom surface of the lining board has a length located below the lower end position of the fastening mechanism of the lining board in order to protect the fastening mechanism of the lining board when the lining boards are stacked. A lining board characterized by comprising a protective member having a The lining board according to claim 6,
The protection member is formed into a substantially L-shape in plan view, and is attached to the lining board so that one side is parallel to the side surface of the lining board and does not prevent rotation of the hooking part. A lining board characterized in that it is arranged near a fastening mechanism.

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