JP5567992B2 - Steel bundle - Google Patents

Description

  The present invention relates to a steel bundle that is disposed between a foundation of a wooden structure and a large drawing as a horizontal member thereof and supports the large drawing.

This type of steel bundle consists of a base fixed on the foundation, a receiving frame that receives the large pull, and a turnbuckle-type column that is interposed between the base and the receiving frame and supports the large pull. Such a turnbuckle-type column can adjust the height position of the receiving frame by rotating it (Patent Document 1).
Since the steel fork to which the steel bundle of Patent Document 1 is applied is made of steel, there is no size variation due to secular change in the steel fork, but the wood fore is not subject to secular change. Cannot be avoided.

If the fork is thin, a gap is generated between the fork and the receiving frame, and stable support for the fork becomes impossible. In such a situation, the height position of the receiving frame has to be readjusted, but this readjustment requires release of fastening of the drawing and receiving frame and re-fastening of the drawing and receiving frame, which is not easy.
Under such circumstances, the present inventor has already proposed a steel bundle that facilitates the above-described readjustment due to thinning of the wood (Patent Document 2). The steel bundle of Patent Document 2 includes an annular groove formed at an upper end portion of a column inserted into the large drawing, and a drift pin fitted into the annular groove by being driven horizontally in the large drawing. Prepare. The annular groove and the drift pin cooperate with each other to form a restraining portion that restrains the support column and the pulling member from each other in the radial direction of the support column. Easy adjustment.

JP 2006-152615 A JP 2010-203094

In the case of the steel bundle of Patent Document 2, it is necessary to previously form a horizontal hole for penetrating the drift pin in the large drawing, so it takes time for pretreatment of the large drawing, and the height of the receiving frame is high. Since the height adjustment and the driving of the drift pin are performed from different directions with respect to the large pull, it takes time to install the steel bundle.
The present invention has been made on the basis of the above-mentioned circumstances, and the purpose of the present invention is to provide a steel bundle that can be easily pre-processed for a horizontal member such as a large drawing and that does not require time and effort for its installation. It is to provide.

In order to achieve the above-mentioned object, the present invention is arranged between a wooden building foundation and a horizontal member having a vertical hole, and in a steel bundle that supports the horizontal member, the steel bundle of the present invention includes: A base fixed on the base, and a tip extending from the base to be inserted into the vertical hole of the horizontal member, and the length from the base to the tip can be expanded and contracted by rotating from the side. A support that is positioned on the base side of the base and adjustable in distance from the base and that can support the horizontal member from below, and the support to the tip of the post. An expansion sleeve that can be placed in a vertical hole along with the tip and can be expanded radially outward, and a size that protrudes from the tip of the column and can be inserted into the vertical hole On the other hand, it is tapered toward the tip of the column, and the expansion is made possible by contraction of the column. The entry in the tip is expanded the expansion sleeve in Rukoto, conversely, said expanded reverse tapered head capable released expansion of the expansion sleeve by escaping from the tip of the sleeve by extension of said strut (Claim 1).

According to the steel bundle of claim 1 described above, the horizontal member is supported by the support by adjusting the height position of the support by the expansion and contraction operation of the column, and the support of the horizontal member by the support is supported. While maintaining, the reverse taper head is entered into the tip of the expansion sleeve by the contraction operation of the support column, thereby expanding the expansion sleeve in the vertical hole of the horizontal member and pressing it against the inner surface of the vertical hole, The horizontal member and the support column are constrained to each other in the horizontal direction via the expanded sleeve.
On the other hand, if a gap is generated between the horizontal support and the horizontal support, the expansion of the expansion sleeve is released by removing the reverse taper head from the end of the expansion sleeve by the extension operation of the column. The height of the support can be readjusted .
Specifically, the support column includes an upper screw rod having a distal end portion, and the support body is movable along the upper screw rod and supports a horizontal member, and the support member is screwed to the upper screw rod to be horizontally mounted. The expansion sleeve includes a receiving nut that sandwiches the receiving portion between the member and fixes the position of the receiving portion, and the expansion sleeve is made of synthetic resin together with the receiving portion, and extends integrally from the receiving portion.

In the case of the steel bundle of claim 2, since the receiving portion and the expanding sleeve are integrated, the expanding sleeve can be disposed in the vertical hole simultaneously with positioning of the receiving portion.
Preferably, the expansion sleeve has a plurality of split grooves formed at intervals in the circumferential direction and extending from the tip. In this case, the expanding sleeve has expanding pieces formed between the split grooves, and these expanding pieces are pressed against the inner surface of the vertical hole by expanding from the root.

Furthermore, it is preferable that the receiving part is a circle having a smaller diameter than the width of the horizontal member (Claim 4), and in this case, the receiving part rarely hits the lower surface of the horizontal member, and the stability of the horizontal member is reduced. Assured support.
Furthermore, the support column may be a turnbuckle type (Claim 5). In this case, the length of the support column can be quickly adjusted.

In the steel bundle according to claim 1-5, since the expanding sleeve is arranged together with the front end portion of the support in the vertical hole of the horizontal member, it is not necessary to prepare a hole other than the vertical hole in the horizontal member, pretreatment process of horizontal members is that easy and Do. And since installation (reinstallation value) of steel bundles is possible by adjusting the position of the support and expanding and releasing the expansion sleeve by expanding and contracting the support , the installation (reinstallation value) It can be done easily.

It is the longitudinal cross-sectional view which showed the steel bundle of one Example. It is a top view which shows the base | substrate of FIG. 1 is a side view showing a partially undercut of FIG. 1, (a) is a partially broken view, and (b) is an end view. It is a side view which fractures | ruptures a part of the support | pillar and shows the steel bundle of a modification.

The steel bundle 10 of one Example shown in FIG. 1 is used for a wooden building. Specifically, the steel bundle 10 is disposed between a concrete foundation A and a large drawing B in a building, and the large drawing B is supported by the foundation A through the steel bundle 10.
Hereinafter, the steel bundle 10 will be described in detail.
The steel bundle 10 includes, for example, a circular base 12, and the base 12 can be fixed on the base A. Specifically, as is apparent from FIG. 2, a plurality of large and small holes 14 are formed in the base 12 in a distributed manner, and these holes 14 are used for driving anchor bolts (not shown) into the base A. . That is, the base 12 can be fixed to the base A via the anchor bolt.

As shown in FIG. 1, a turnbuckle-type column 16 is erected from the base 12, and this column 16 can be expanded and contracted vertically. The upper end portion of the column 16 is inserted into the vertical hole C of the large pull B from below. In addition, the vertical hole C is previously processed into the large drawing B, and penetrates the large drawing B in the vertical direction.
Specifically, the support column 16 has a lower screw rod 18. The lower screw rod 18 extends upward from the base 12 over a predetermined length, and an outer peripheral surface thereof is formed as a left screw 20. An upper end portion of the lower screw rod 18 is concentrically surrounded by a lower region of the connection pipe 22, and a lower region of the connection pipe 22 has a lower end that is reduced in diameter through a taper portion, and a square nut 24 is provided at the lower end. . The square nut 24 is integrally welded to the connecting pipe 22 and is screwed to the lower screw rod 18, that is, the left screw 20.

  On the other hand, the upper region of the connecting pipe 22 concentrically surrounds the upper screw rod 26. The upper screw rod 26 is positioned coaxially with the lower screw rod 18, and its outer peripheral surface is formed as a right screw 28. Yes. Further, the upper region of the connecting pipe 22 has an upper end which is reduced in diameter through a tapered portion, and a square nut 30 is provided at the upper end. The square lot 30 is integrally welded to the upper end of the connecting pipe 22 and is screwed to the upper screw rod 26, that is, the right screw 28.

Note that handle levers (not shown) are attached to the outer peripheral surface of the connection pipe 22 above and below, and these handle levers protrude from the connection pipe 22 in the horizontal direction and are used for rotating the connection pipe 22.
As apparent from FIG. 1, the upper screw rod 26 further extends upward from the connecting pipe 22, and the upper end portion of the upper screw rod 26 is inserted into the vertical hole C of the large pull B with some play. Further, the upper screw rod 26 has a reverse taper head 32 at its upper end, and this reverse taper head 32 has a tapered surface tapered downward on the outer peripheral surface thereof. That is, the reverse taper head 32 has an upper end slightly smaller than the inner diameter of the vertical hole C and a lower end having the same outer diameter as the upper screw rod 26.

At the upper end of the upper screw rod 26, there is provided a large receiving 34 made of a synthetic resin that can be elastically deformed. Specifically, the large receiver 34 has a through hole 36 at the center thereof, and the inner diameter of the through hole 36 is substantially equal to the outer diameter of the upper screw rod 26. That is, the large receiver 34 is attached to the upper screw rod 26 by passing the upper screw rod 26 through the through hole 36.
The lower end portion of the large pull receiving 34 is formed in a circular receiving portion 38, and this receiving portion 38 has an outer diameter larger than the vertical hole C of the large pull B and smaller than the width of the large pull B, and has a large diameter. The pull B can be supported from below.

  The large receiver 34 has an expanding sleeve 40 having a diameter smaller than that of the receiving portion 38. The expanding sleeve 40 extends upward from the receiving portion 38 over a predetermined length, and is connected to the inner surface of the vertical hole C. It functions as a spacer that fills an annular gap between the outer screw rod 26 and the outer peripheral surface (right screw 28). That is, the expanding sleeve 40 has a thickness equal to the annular gap, its outer diameter is equal to the inner diameter of the vertical hole C, and its length is about half of the height of the large pull B.

  Specifically, as is clear from FIGS. 3A and 3B, the expanding sleeve 40 has a plurality of split grooves 42 at the upper end thereof, and these split grooves 42 are arranged in the circumferential direction of the expanding sleeve 40. It arrange | positions at intervals and it extends over the predetermined | prescribed length toward the receiving part 38 from the upper end of the expansion sleeve 40. FIG. Such a dividing groove 42 forms a plurality of expanding pieces 44 at the upper end portion of the expanding sleeve 40, and these expanding pieces 44 are positioned between the dividing grooves 42, and the radially outer side of the expanding sleeve 40 from the root thereof. It can be elastically deformed so as to expand toward. The upper end of the spread piece 44 is rounded.

Further, a receiving nut 46 is attached to the upper screw rod 26 between the large receiving 34 and the connecting pipe 22, and this receiving nut 46 is screwed into the right screw 28 of the upper screw rod 26, and the upper nut is rotated by the rotation. It can be moved up and down along the screw rod 26.
According to the steel bundle 10 of the above-described embodiment, the projecting lengths of the lower screw rod 18 and the upper screw rod 26 from the connection pipe 22 extend or contract in conjunction with each other only by rotating the connection pipe 22. The length of the column 16 can be easily adjusted in accordance with the height position of the large pull B from the foundation A.

  Therefore, as shown in FIG. 1, the steel bundle 10 erected on the foundation A has the upper sleeve rod 26 and the expansion sleeve 40 of the large receiver 34 in the vertical hole C of the large pull B. In this state, the receiving nut 46 is positioned directly below the receiving portion 38 of the large receiver 34, and the receiving portion 38 is sandwiched between the large pull B and the receiving nut 46. That is, the large pull B is supported by the support column 16 via the receiving portion 38 and the receiving nut 46 of the large pull receiving 34, and the receiving portion 38 and the receiving nut 46 constitute a support for the large pull B.

  Thereafter, the rotation of the receiving nut 46 is prevented, and the connecting pipe 22 of the column 16 is connected to the column 16 with the length of the column 16 in a state where the receiving portion 38 of the large receiving member 34 is sandwiched between the large drawing B and the receiving nut 46. When rotating in the shortening direction, the upper screw rod 26 descends with respect to the large receiver 34. Therefore, the reverse taper head 32 of the upper screw rod 26 enters the upper end portion of the expansion sleeve 40 to expand the expansion piece 44 of the expansion sleeve 40, and the expanded expansion piece 44 is in the large pull B. The inner surface of the vertical hole C is pressed. As a result, the large drawing B and the large receiving 34 are constrained to each other in the horizontal direction and prevent the horizontal displacement of the large drawing B with respect to the support column 16.

  On the other hand, when a gap is generated between the receiving portion 38 of the large receiving 34 and the large drawing B due to the thinning of the large drawing B, the strut 16 is temporarily extended to release the above-mentioned constraint, The large receiver 34 is lifted by the gap, and the large sleeve 34 and the large receiver 34 are similarly re-constrained by the re-expansion of the expansion sleeve 40, so that the large receiver 34 passes through the receiving portion 38. Can be supported.

As is clear from the above description, the steel bundle 10 of one embodiment does not use a drift pin for the restraint described above, so it is not necessary to form a lateral hole for the drift pin in the large pull B. Pretreatment processing becomes easy.
Further, the installation of the steel bundle 10 accompanied by the length adjustment of the support column 16 and the expansion of the expansion sleeve 40 and the installation adjustment of the steel bundle 10 due to the thinning of the large pull B are both performed by the steel bundle 10. On the other hand, since it is possible only by access from the lower side of the large fork B, installation and installation adjustment are easy and simple.

Further, since the upper end of the above-mentioned expanding piece 44 is rounded, when the reverse taper head 32 enters the expanding sleeve 40, the upper end of the expanding piece 44 is not the tapered surface of the reverse taper head 32 or the like. The above installation and installation adjustment can be performed stably without being caught in the inner surface of the vertical hole C.
Further, since the receiving portion 38 of the large pull 34 has a diameter smaller than the width of the large pull B, it is less likely to hit the lower surface of the large pull B, and the large pull B can be supported stably. it can.

The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, the steel bundle 10 shown in FIG. 4 differs from the embodiment only in the configuration of the support 16. Therefore, in FIG. 4, members and parts having the same functions as those in the embodiment are denoted by the same reference numerals, description thereof is omitted, and only differences are described below.
The support column 16 includes a support pipe 48 instead of the connection pipe 22. The support pipe 48 is erected directly from the base 12, and the upper part thereof has the same configuration as the upper and lower sides of the connection pipe 22. The upper screw rod 26 extends upward from the upper end of the support pipe 48, that is, the square nut 30, and an adjustment nut 50 is attached to the upper screw rod 26 below the receiving nut 46. The adjustment nut 50 is welded to the upper screw rod 26 and rotates integrally with the upper screw rod 26.

  Therefore, when the upper screw rod 26 is rotated via the adjusting nut 50, the protruding length from the support pipe 48, that is, the length of the column 16 is adjusted according to the rotation direction.

12 base 16 support 18 lower screw rod 22 connecting pipe 24, 30 square nut 26 upper screw rod 32 reverse taper head 34 large receiving 38 receiving part (support)
40 Expanding sleeve 42 Split groove 46 Receiving nut (support)
A Foundation B Daihiki (Horizontal material)
C Vertical hole

Claims (5)

In a steel bundle disposed between a foundation of a wooden building and a horizontal member having a vertical hole, and supporting the horizontal member,
A base fixed on the base;
A column extending from the base, having a tip portion to be inserted into the vertical hole of the horizontal member, and capable of expanding and contracting the length from the base to the tip by a rotation operation from the side ;
A support body that is located on the base side of the support column from the front end and that is adjustable in distance from the base, and that can support the horizontal member from below;
An expanding sleeve extending from the support body so as to surround the distal end portion of the support column, being disposed in the longitudinal hole together with the distal end portion, and capable of expanding outward in the radial direction;
Projecting from the distal end of the strut, the one having an insertable size in the longitudinal bore, without the tapered toward the tip of the strut, Ru is advanced into the distal end of the expansion sleeve by contraction of the strut And a reverse taper head capable of releasing the expansion sleeve by releasing the tip of the expansion sleeve by extension of the support column. Steel bundle. The strut includes an upper screw rod having the tip.
The support body is movable along the upper screw rod and supports a horizontal member, and is screwed to the upper screw rod, and the support member is sandwiched between the horizontal member and the support member. Including a receiving nut for fixing the position of the receiving portion,
The steel bundle according to claim 1, wherein the expansion sleeve is made of a synthetic resin together with the receiving portion, and extends integrally from the receiving portion.   3. The steel bundle according to claim 1, wherein the expansion sleeve has a plurality of split grooves that are formed at intervals in the circumferential direction and extend from the tip.   The steel bundle according to claim 2 or 3, wherein the receiving portion has a circular shape having a smaller diameter than the width of the horizontal member.   The steel bundle according to any one of claims 1 to 4, wherein the column is a turnbuckle type.

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