JP3602107B2 - Floor bundle foundation - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a floor bundle foundation.
[0002]
[Prior art]
The floor bundle foundation is, for example, in the form of a short pillar used when constructing a floor of a gymnasium or the like, and is erected on a floor slab made of concrete or the like. Alternatively, support the floorboard or the like.
In general, as a seed bundle base, a vibration-absorbing material such as rubber is provided at an intermediate portion in the height direction. (See, for example, Japanese Utility Model Laid-Open No. 57-129836, Japanese Utility Model Laid-Open No. 59-65146, etc.). In some cases, the height adjusting bolt is provided to connect between the vibration absorbing member and the upper end portion (such as a large bearing).
[0003]
[Problems to be solved by the invention]
When shocking vibration is applied to the floor, etc., the vibration-absorbing material may be severely compressed vertically and cause a large lateral displacement, which may cause an excessive load on the height adjustment bolt in the tilt direction. May act to cause bending or breakage at a welded joint or the like. In such a case, an internal crack or the like may occur in the vibration absorbing material itself.
[0004]
The present invention has been made in view of the above circumstances, and even when shocking vibration is applied to the floor, the height adjustment bolt may be bent or broken, and the damping material may be damaged. The purpose is to provide a bundle foundation that has not been made.
[0005]
[Means for Solving the Problems]
In the present invention, the following technical measures have been taken to achieve the above object.
That is, according to the present invention, the vibration absorbing material is provided in the middle portion in the height direction, and the upper and lower compression limiting pieces which can abut each other when the vertical compression of the vibration absorbing material reaches a predetermined amount are provided. Floor slab foundation
One of an upper part and a lower part of the compression limiting piece is formed in a plate shape in which the vibration absorbing material is disposed at a central portion, and the other is a cover shape having a circular peripheral wall in plan view surrounding the vibration absorbing material concentrically. It is characterized by being formed in.
[0006]
[Action]
Even if shocking vibration is applied to the floor, the vibration-absorbing material does not further longitudinally compress beyond the state where the upper and lower compression limiting pieces are in contact with each other.
Further, one of the compression limiting pieces is formed in a plate shape in which the vibration absorbing material is disposed at the center, and the other is formed in a cover shape having a circular peripheral wall in plan view surrounding the vibration absorbing material concentrically. Therefore, when both compression limiting pieces come into contact with each other, a large frictional resistance is generated against skidding.
[0007]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a bundle foundation 1 according to the present invention, in which 2 is a floor slab and 3 is a slab. Although not shown, a joist is generally crossed over an upper part of the pulling bar 3 and a floor panel or the like is mounted on the upper part.
[0008]
The bundle foundation 1 has a support body 6 having a fixing plate 5 for fixing to the floor slab 2 at a lower end, and a large pulley 3 provided at an upper portion of the support body 6 through a height variable body 7 and a vibration absorbing material 8. And a bearing member 9 used for connection with the like.
The support main body 6 is formed of a circular or square pipe material, and a nut member 12 having an outer peripheral flange is fitted and welded to an upper end thereof.
[0009]
The variable height member 7 is formed of a circular pipe material that is slightly thinner than the support main body 6, and a screw portion 7 a that can be screwed with the nut member 12 is engraved on the outer peripheral surface. Therefore, the height of the support member 9 can be adjusted by changing the degree of rotation of the height variable body 7 with respect to the support main body 6, thereby constituting the height adjusting means 14. Reference numeral 15 denotes a lock nut for fixing the adjustment state.
[0010]
A compression limiting piece 18 formed in the shape of a circular plate is welded to the upper end of the height variable body 7. A vibration absorbing material is attached to the center of the upper surface of the compression limiting piece 18 via a fixing tool 19 a such as a rivet. 8 is fixed.
The vibration-absorbing material 8 is formed of a somewhat flat rectangular parallelepiped rubber body formed in a square shape in a plan view, and metal reinforcing plates 8a and 8b are fixed to upper and lower surfaces. The rivet 19a is fixed to the reinforcement 8b on the lower surface side, and the mounting bolt 19 is erected and fixed to the reinforcement plate 8a on the upper surface side. The mounting bolt 19 penetrates a cover-shaped compression limiting piece 22 and the support member 9 described below, and a nut 19a is screwed into a protruding end of the mounting member 19 and tightened. The member 9 is fixed to the upper surface of the vibration absorbing material 8.
[0011]
In addition, since the pipe material is used for the variable height member 7 as described above, the welded joint between the variable height member 7 and the lower compression limiting piece 18 (see arrow B) is a conventional one. The diameter is larger than the corresponding portion of the height adjustment bolt (not shown). Therefore, it is more resistant to bending, bending, and twisting.
A cover-shaped compression limiting piece 22 having a peripheral wall 22a surrounding the outer periphery is covered on the upper part of the vibration absorbing material 8. The cover-shaped compression limiting piece 22 has a short cylindrical shape with a bottom, and is covered on the upper part of the vibration absorbing material 8 so that an opening end thereof faces downward. The lower end of the peripheral wall 22a of the compression limiting piece 22 holds a predetermined gap G between itself and the plate-shaped compression limiting piece 18 when the vibration absorbing material 8 is not compressed in the vertical direction. The gap G is set to such an extent that the lower end of the peripheral wall 22a contacts the lower compression limiting piece 18 when the vibration absorbing member 8 is subjected to excessive axial compression. Therefore, a considerable amount of the gap G is an allowable compression amount of the vibration absorbing material 8.
[0012]
The plane shapes of the compression limiting pieces 18 and 22 and the vibration-absorbing material 8 can be circular, square, or rectangular.
The support member 9 is formed by bending a band plate material into a side shape in which a silk hat is turned upside down, and a flat portion 9a at a lower center has a through hole to be fitted to the mounting bolt 19, In the flat portions 9b on both upper sides, through holes for inserting bolts 25 used for coupling with the puller 3 are formed.
[0013]
A large receiving device 26 having a bent side edge 26a for receiving the lower surface of the large pulley 3 in a fitting manner is provided on an upper portion of the bearing member 9. A nut plate 28 screwed with the bolt 25 is fitted into the inside 3.
By providing two upper flat portions 9b in the support member 9 and forming different through holes in these upper flat portions 9b, it is possible to couple with the large pull 3 by two bolts 25. The bonding strength can be increased.
[0014]
In the bundle foundation 1 according to the above configuration, even when shocking vibration is applied to the floor (not shown), the cover-like (upper) compression limiting piece 22 is entirely lowered and the In a state in which the compression-restricting piece 18 in a shape (lower side) is in frame contact with the compression-restricting piece 18, or as shown in FIG. 8 is not further axially compressed beyond this contact state.
[0015]
Accordingly, plastic deformation due to excessive axial compression of the vibration absorbing material 8 is prevented, and the durability of the vibration absorbing material 8 is improved.
In particular, when almost the entire lower end of the cover-shaped compression limiting piece 22 abuts on the compression limiting piece 18, a large frictional resistance can be generated against the side slipping action. For this reason, especially the vibration absorbing material 8 is prevented from being largely sheared in the lateral direction, and the damage of the vibration absorbing material 8 due to excessive shear deformation is also prevented at the same time. In addition, the cover-shaped compression limiting piece 22 has an advantage that high rigidity is obtained and deformation is difficult.
[0016]
In the present invention, as shown in FIG. 4, concentric grooves 30 are formed in the upper surface of the plate-shaped compression limiting piece 18 in a region (or the entire surface) where the cover-shaped compression limiting piece 22 can abut. By doing so, it is possible to more reliably prevent the side slip when the cover-shaped compression limiting piece 22 abuts.
Alternatively, the lower compression restriction piece 18 may be formed in a cover shape, and the upper compression restriction piece 22 may be formed in a plate shape.
[0017]
Further, as shown in FIG. 5, a bolt 19 may be protruded from the upper surface of the plate-shaped compression limiting piece 18 so that the vibration absorbing material 8 penetrates the bolt 19. Further, the vibration absorbing material 8 may be configured by laminating a plurality of rubber plates. In this case, each of the rubber plates may be fixed to each other or integrated from the beginning, but may be kept in a separated state so that the number of laminations can be appropriately changed according to circumstances at the site.
[0018]
【The invention's effect】
The present invention has the above-described configuration, and when the vibration-absorbing material is vertically compressed by a predetermined amount, the upper and lower compression limiting pieces are made to abut each other, so that impact vibration is applied to the floor. In this case, the vibration-absorbing material is not excessively longitudinally compressed, so that not only the vibration-absorbing material but also each part can be prevented from being damaged.
[0019]
In addition, the vibration absorbing material is arranged at the center of one plate-shaped compression limiting piece, and the other cover-shaped compression limiting piece has a circular peripheral wall in plan view surrounding the vibration absorbing material concentrically. When the two compression limiting pieces come into contact with each other, a large frictional resistance is generated against the side slipping action, so that the damping material and the prevention of breakage of each part are further ensured.
[Brief description of the drawings]
FIG. 1 is a partially broken front view showing a bundle base according to the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a diagram illustrating the operation of a vibration damping material.
FIG. 4 is a plan view showing a modification of the plate-shaped compression limiting piece.
FIG. 5 is a cross-sectional view showing a modification of the mounting structure of the vibration absorbing material.
[Explanation of symbols]
1 Bundled foundation 8 Vibration absorber 18 Compression limiting piece (plate-shaped)
22 Compression limiting piece (covered)
22a Perimeter wall

Claims (1)

A vibration-absorbing material (8) is provided at an intermediate portion in the height direction, and upper and lower compression limiting pieces (18) that can come into contact with each other when the longitudinal compression of the vibration-absorbing material (8) reaches a predetermined amount. , 22) is provided, and
One of an upper part and a lower part of the compression limiting piece (18, 22) is formed in a plate shape in which the vibration absorbing material (8) is arranged at a central portion,
A floor bundle base, characterized in that the other end is formed in a cover shape having a circular peripheral wall (22a) in plan view surrounding the vibration absorbing material (8) concentrically.

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