JP4133440B2 - Eccentric spacer with spherical core - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an eccentric spacer having a spherical core used for attaching a side wall of a guideway of a magnetic levitation railway.
[0002]
[Prior art]
Conventionally, when a fixed body is attached to a bolt to be planted on the foundation, it is necessary to correctly install the fixed body at a predetermined position on the foundation, but the bolt is accurately planted to fit the predetermined position on the foundation. Since it is difficult to do so, a spacer is required to make it possible to adjust and attach the fixed body so as to be able to cope with an error in the position of the bolt when the fixed body is fixed.
[0003]
In consideration of such a situation, the present inventor has already proposed an eccentric spacer (Japanese Patent Application No. 2002-024561).
[0004]
[Problems to be solved by the invention]
By the way, fixing bolts such as a guideway side wall of a magnetic levitation railway are not always in a state of being perpendicular to the foundation when planted in concrete as a foundation.
[0005]
However, the eccentric spacer described above has a cylindrical core, and the through-hole passing through the core also has a cylindrical shape. Therefore, the bolts embedded in the foundation are inclined with respect to the foundation. When there is, there was a problem that a bolt could not be penetrated to the cylindrical through hole.
[0006]
In view of the above circumstances, the present invention provides an eccentric spacer having a spherical core that can be easily adapted to bolts that are displaced relative to the foundation or that are inclined and planted. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides
[1] An eccentric spacer having a spherical core, comprising: a first eccentric through hole that receives a bolt to be planted on a foundation; and a hemispherical concave portion that communicates with an upper portion of the first eccentric through hole. A cylindrical lower block, a cylindrical upper block having a first eccentric through hole that receives the bolt, and a hemispherical recess that communicates with a lower portion of the first eccentric through hole, and the bolt A spherical core having a second eccentric through hole, and having a through hole in the assembly having the spherical core in a spherical space formed inside the lower block and the upper block. The bolt is accommodated in the fixed body, and the bolt is passed through the second eccentric through hole of the spherical core to fix the fixed body in a predetermined position with respect to the foundation.
[0008]
[2] In the eccentric spacer having the spherical core according to [1], the lower block and the upper block are provided with a lift prevention plate.
[0009]
[3] The eccentric spacer having the spherical core according to the above [1] or [2], further comprising a stuffing to be loaded in a gap between the lower block and the upper block and the through hole of the fixed body. .
[0010]
[4] In the eccentric spacer having the spherical core according to [1], the base is a roadbed and the fixed body is a side wall of a guideway.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0012]
1 is a vertical sectional view of an eccentric spacer having a spherical core showing an embodiment of the present invention, FIG. 2 is a horizontal sectional view of the eccentric spacer having the spherical core, FIG. 3 is a perspective view thereof, and FIG. It is a disassembled perspective view which shows the attachment state of the to-be-fixed body to the foundation using the eccentric spacer which has the spherical core which shows the Example of this invention.
[0013]
In these drawings, reference numeral 1 denotes a cylindrical lower block. The lower block 1 includes a first eccentric through hole 2 for receiving a bolt 21 planted on a foundation 20 and the first eccentric through hole. 2 has a hemispherical recess 3 for mounting the spherical core 8 and a female screw hole 4 for screwing. Reference numeral 5 denotes a cylindrical upper block. The upper block 5 is formed in a first eccentric through hole 2 ′ for receiving a bolt 21 to be planted on the foundation 20 and a lower portion of the first eccentric through hole 2 ′. It has a hemispherical recess 3 ′ that communicates with the upper part of the spherical core 8 and a screw insertion hole 6.
[0014]
On the other hand, a second eccentric through hole 9 is formed in the spherical core 8 so that a bolt 21 implanted in the foundation 20 passes therethrough.
[0015]
Therefore, the spherical core 8 is placed in the hemispherical recess 3 of the lower block 1, and the upper block 5 is placed on the spherical core 8 so that the upper part of the spherical core 8 can be accommodated in the hemispherical recess 3 ′ of the upper block 5. . That is, the lower block 1 and the upper block 5 are screwed together with the screw rod 7 so that the spherical core 8 is formed in a spherical space formed inside the upper block 5 and the lower block 1. . Reference numeral 10 denotes an inner peripheral surface of the first eccentric through holes 2 and 2 ′ of the lower block 1 and the upper block 5 combined in this manner, and 11 denotes an outer peripheral surface of the lower block 1 and the upper block 5. Yes.
[0016]
In this connection, an example of the dimensions of this assembly (see FIG. 1) shows that the diameter φ ₁ of the first eccentric through hole 2, 2 ′ is 64 mm, the diameter φ ₂ of the spherical core 8 is 80 mm, and the second offset The diameter φ ₃ of the core through hole 9 is 35.5 mm, the height L ₁ of the lower block 1 and the upper block 5 is 50 mm, respectively, and the width L _{2 of the} thinnest portion excluding the hemispherical recesses of the lower block 1 and the upper block 5 Is 15 mm, the width L ₃ of the thickest part is 42 mm, and the outer diameter φ ₄ of the lower block 1 and the upper block 5 is 121 mm.
[0017]
In FIG. 2, 12 is the center of the spherical core 8, 13 is the center of the lower block 1 and the upper block 5, the shift amount L ₄ between these centers 12 and 13 is 13.5 mm, and 14 is an example of this dimension. In this eccentric spacer, the bolt 21 implanted in the foundation 20 can be received, and the diameter φ _{5 in} this range is 89 mm.
[0018]
Next, application of an eccentric spacer having a spherical core will be described with reference to FIG.
[0019]
As described above, the eccentric spacer assembled so that the spherical core 8 is accommodated by the lower block 1 and the upper block 5 is connected to a through hole 31 (having a diameter φ ₇₎ formed at a predetermined position of the fixed body 30. Is mounted so that it fits the bolt 21 to be planted on the foundation 20. That is, at that time, in order to fix the fixed body 30 to the determined dotted line position of the base 20, the upper block 5 and the lower block 5 are arranged so that the bolt 21 passes through the second eccentric through hole 9 of the spherical core 8. An eccentric spacer is arranged in which the position of the hemispherical recesses 3 and 3 'of the block 1 and the position and angle of the second eccentric through hole 9 of the spherical core 8 are adjusted and combined, and a thick washer 24 is provided thereon. Then, the tip of the bolt 21 is fastened with a nut 25.
[0020]
By configuring in this way, even if the bolt 21 implanted in the foundation 20 is slightly inclined, the spherical core 8 is rotated so that the second eccentric through hole 9 corresponds to the inclination of the bolt 21. By tilting to the right, it can be easily adapted and the fixed body 30 can be smoothly attached to the correct position of the foundation 20.
[0021]
Moreover, in the said Example, although not shown in the space | gap part of the lower block 1 and the upper block 5, and the through-hole 31 of the to-be-fixed body 30, although not shown in figure, a stuffing can be fixed more firmly. .
[0022]
FIG. 5 is a view showing an example in which the eccentric spacer having the spherical core described above is applied to the construction of a guideway for a magnetically levitated railway, and FIG. 6 is an enlarged cross-sectional view of a portion A thereof.
[0023]
In this figure, reference numeral 40 denotes a guideway. In this guideway 40, a bolt 42 is planted on a roadbed 41, and the spherical core described above is inserted into a through hole 46 of a mounting portion 45 of a leg portion of the guideway side wall 44. The guideway side wall 44 as a fixed body is fixed to the road base 41 by passing the bolt 42 through the eccentric spacer 47 and fixing it.
[0024]
That is, as shown in FIGS. 1 to 4, the eccentric spacer 47 assembled so that the spherical core 8 is accommodated by the lower block 1 and the upper block 5 is connected to the guideway side wall 44 as a fixed body. It is attached to a through hole 46 (having a diameter φ ₇ of 121 mm) formed at a predetermined position of the mounting portion 45 of the leg portion, and is arranged so as to be adapted to a bolt 42 to be planted on the roadbed 41 as a foundation. That is, as shown in FIG. 6, the eccentric spacer 47 having the spherical core is arranged so that the bolt 42 passes through the second eccentric through hole 9 of the spherical core 8, and the floating prevention plate 51 (for example, after placing the diameter phi ₆ 118 mm), thereon through a thick washer 52 and spring washer 53, 54 is fastened the leading end of the bolt 42 by a nut 55.
[0025]
Although the present embodiment describes the application to the inclination and displacement of the bolts implanted in the roadbed, the same effect can be obtained when a female screw is embedded in the roadbed and fastened with bolts from above instead of nut fastening. be able to.
[0026]
Needless to say, the eccentric spacer having the spherical core of the present invention has a wide range of applications including application to the construction of a guideway for a magnetically levitated railway.
[0027]
Further, the present invention is not limited to the above-described embodiments, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.
[0028]
【The invention's effect】
As described above in detail, according to the present invention, when the fixed body is attached to the foundation, it can be easily adapted as long as it is within a certain range even if there is a displacement or inclination of the bolt provided on the foundation. And can be installed smoothly.
[Brief description of the drawings]
FIG. 1 is a vertical sectional view of an eccentric spacer having a spherical core showing an embodiment of the present invention.
FIG. 2 is a horizontal sectional view of an eccentric spacer having a spherical core showing an embodiment of the present invention.
FIG. 3 is a perspective view of an eccentric spacer having a spherical core showing an embodiment of the present invention.
FIG. 4 is an exploded perspective view showing an attachment state of a fixed body to a foundation using an eccentric spacer having a spherical core showing an embodiment of the present invention.
FIG. 5 is a diagram showing an example in which an eccentric spacer having a spherical core according to an embodiment of the present invention is applied to the construction of a guideway for a magnetically levitated railway.
6 is an enlarged cross-sectional view of a part A in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lower block 2, 2 '1st eccentric through-hole 3, 3' Hemispherical recessed part 4 Screwing female screw hole 5 Upper block 6 Screw insertion hole 7 Screw rod 8 Spherical core 9 2nd eccentric through-hole 10 1st The inner peripheral surface 11 of the eccentric through hole 1 The outer peripheral surface 12 of the lower block and the upper block 12 The center of the spherical core 13 The center of the lower block and the upper block 14 Existence range of bolts that can be received by the eccentric spacer 20 Bolt 24 Washer 25, 55 Nut 30 Fixed body 31, 46 Through hole 40 Guide way 41 Subbase 44 Guide way side wall 45 Guide way side wall leg mounting portion 47 Eccentric spacer 51 with spherical core core Lifting prevention plate 52 Thick Washers 53, 54 Spring washers

Claims (4)

(A) a cylindrical lower block having a first eccentric through hole that receives a bolt to be planted on the foundation and a hemispherical recess communicating with the upper portion of the first eccentric through hole;
(B) a cylindrical upper block having a first eccentric through hole that receives the bolt and a hemispherical recess communicating with a lower portion of the first eccentric through hole;
(C) a spherical core having a second eccentric through hole for receiving the bolt;
(D) While accommodating the assembly which has the said spherical core in the spherical space formed inside combining the said lower block and the upper block in the to-be-fixed body which has a through-hole,
(E) An eccentric spacer having a spherical core that passes through the bolt in conformity with the second eccentric through hole of the spherical core and fixes the fixed body to a predetermined position with respect to the foundation. The eccentric spacer having the spherical core according to claim 1, wherein the eccentric spacer has a spherical core provided with a lift prevention plate for the lower block and the upper block. The eccentric spacer having a spherical core according to claim 1 or 2, wherein the eccentric spacer has a spherical core having a filling loaded in a gap between the lower block and the upper block and the through hole of the fixed body. Spacer. The eccentric spacer having a spherical core according to claim 1, wherein the foundation is a roadbed and the fixed body is a side wall of a guideway.

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