JP2021185289A - Timbering - Google Patents

Abstract

To connect multiple posts by means of detachable connectors to construct timbering while preventing misalignment at the connections of the posts thereby making it possible to support a structure in a stable state.SOLUTION: Lower ends of posts 11-14 forming timbering 1 abut on upper ends of cylinder members 31-34 included in lower end connectors 30. The timbering 1 comprises multiple clamp members 71-74 to clamp the lower ends of the posts 11-14 and the upper ends of the cylinder members 31-34 from the radial outside of the posts 11-14 and the cylinder members 31-34.SELECTED DRAWING: Figure 1

Description

The present invention relates to a support work used when supporting a structure at various construction sites, construction sites, etc., and particularly belongs to the technical field of a structure for constructing a support work by connecting a plurality of pipe materials.

For example, at various construction sites and construction sites, various operations are carried out with the structure supported by the support work. Commonly used as a support work is, for example, a square strut that is integrated by welding a connecting member to four pipe materials, a one made of thick steel pipe, etc., and by using these. Heavy structures can also be supported.

Since the four pipe materials of the square strut are connected by welding and cannot be disassembled, the weight per strut increases. Further, those made of steel pipes are generally thick and thick in order to increase the allowable load, so that the weight per pipe is high. Therefore, in the case of a conventional support work consisting of a square support or a steel pipe, it is not something that a worker can manually carry at the site, and it can only be handled by a crane or the like. For this reason, it has not been possible to carry conventional square columns and steel pipes into underground pits where it is difficult to install cranes and the like, and closed chambers such as inside pipes and tanks.

Further, for example, as disclosed in Patent Documents 1 to 3, it is known that a plurality of columns are connected by a detachable connecting tool to increase the allowable load per support work. The support column of Patent Document 1 is provided with a support fitting for connecting a horizontal member or a diagonal member. By using this connecting metal fitting for supporting work, it is possible to reinforce the supporting work with a horizontal member or a diagonal material without interfering with a horizontal connecting material or the like. Further, in Patent Document 2, a horizontal member connecting collar is provided on a support column erected at a predetermined interval in the horizontal direction, a hole is formed in the horizontal member connecting collar, and the horizontal member with a wedge mechanism is connected to the horizontal member. By engaging with the holes in the brim, multiple columns are connected to build a support. Further, in Patent Document 3, a receiving metal fitting having a wedge hole is provided in a support column, and a horizontal member is engaged with the wedge hole to connect a plurality of columns to construct a support work.

Japanese Unexamined Patent Publication No. 8-270214 Japanese Unexamined Patent Publication No. 2008-57253 Japanese Unexamined Patent Publication No. 2014-1055772

According to the support works of Patent Documents 1 to 3, since a plurality of columns are connected by a detachable connecting tool, the support works can be easily disassembled and the columns can be transported in units of one. Will be possible. Generally, in the case of a support as disclosed in Patent Documents 1 to 3, the weight is such that one can be manually carried, so that a worker manually carries it into an underground pit or a closed room. And the convenience is improved. In addition, by changing the number of columns to be combined, there is an advantage that the allowable load of the support work can be easily set for each site. Further, it becomes possible to freely arrange the columns according to the shape of the supporting structure. That is, there are various merits by connecting a plurality of columns with a detachable connecting tool to construct a support work.

However, there may be a problem in terms of strength at the connecting portion of the columns that make up the support work. For example, when constructing a support by providing a connecting tool for connecting the lower ends of a plurality of columns, the lower end of the columns is abutted against the upper end of the tubular member provided on the connecting tool to be connected. If the column and the tubular member are misaligned, the end faces do not match, and if a large load is applied in this state, it may cause deformation.

The present invention has been made in view of this point, and an object of the present invention is that when a plurality of columns are connected by a detachable connecting tool to construct a support work, misalignment at the connecting portion of the columns is performed. The purpose is to prevent the structure from being supported in a stable state.

In order to achieve the above object, the first invention comprises a plurality of columns extending in the vertical direction and arranged at intervals in the horizontal direction, and a connecting tool for connecting the lower ends of the columns. In the support work for supporting the structure from below, the connecting tool comprises a substrate and a plurality of tubular members fixed to the substrate and protruding upward to have a diameter substantially the same as the diameter of the lower end portion of the column. The lower end of each column is abutted against the upper end of each cylinder member, and the lower end of the column and the upper end of the cylinder member are brought into contact with the column and the radial outside of the cylinder member. It is characterized by having a plurality of clamping members for clamping.

According to this configuration, the lower end of the strut and the upper end of the tubular member are clamped from the outside in the radial direction by one clamping member while the lower end of the strut is abutted against the upper end of the tubular member of the connector. Will be done. That is, since the lower end portion of the column and the upper end portion of the tubular member are clamped at the same time by one clamp member, the relative movement between the column and the tubular member is prohibited. At this time, since the lower end of the column and the upper end of the tubular member have substantially the same diameter, the lower end of the column and the upper end of the tubular member are aligned with each other, and the end faces coincide with each other. As a result, a support work that can sufficiently withstand a large load is constructed. Further, by connecting a plurality of columns with a connecting tool, the relative positional relationship between the columns can be appropriately maintained. Therefore, it becomes possible to support the structure in a stable state.

On the other hand, if the clamp member is removed, the support column can be separated from the connector. As a result, the support work can be easily disassembled into units of one column. Since it is possible to carry the support manually with only one support, for example, a worker can manually carry the support to an underground pit or a closed room. In addition, by changing the number of columns to be combined, it is possible to easily set the allowable load of the support work for each site. Further, it becomes possible to freely arrange the columns according to the shape of the supporting structure. It is also possible to connect and use a plurality of support works. When connecting the support works, a separate cloth material or the like can be used.

In the second invention, the support column includes a first support column and a second support column arranged horizontally spaced apart from each other, and the tubular member has a first support column to which a lower end portion of the first support column is abutted. The first cylinder member includes a cylinder member and a second cylinder member to which the lower end portion of the second support column is abutted, and the clamp member clamps the lower end portion of the first support column and the upper end portion of the first cylinder member. A clamp member includes a second clamp member that clamps a lower end portion of the second support column and an upper end portion of the second cylinder member, and one end portion of a cloth material is connected to the first clamp member. The other end of the cloth material is connected to the second clamp member.

According to this configuration, since the first strut and the second strut can be connected by the cloth material, the strength of the support work can be improved.

A third aspect of the invention is characterized in that the clamp member includes an upper contact portion that abuts on the outer peripheral surface of the support column and a lower contact portion that abuts on the outer peripheral surface of the tubular member.

According to this configuration, the upper contact portion of the clamp member abuts on the outer peripheral surface of the column, and the lower contact portion abuts on the outer peripheral surface of the tubular member, so that the column and the tubular member can be firmly clamped.

In the fourth aspect of the present invention, a plurality of the upper contact portions are provided at intervals in the circumferential direction of the support column, and a plurality of lower contact portions are provided at intervals in the circumferential direction of the tubular member. It is characterized by being.

According to this configuration, since the plurality of upper contact portions abut on the outer peripheral surface of the column and the plurality of lower contact portions abut on the outer peripheral surface of the tubular member, the positions in the radial direction of the column and the tubular member The alignment is surely done.

In the fifth aspect of the invention, the upper contact portion extends in an arc shape along the outer peripheral surface of the support column, and the lower contact portion extends in an arc shape along the outer peripheral surface of the tubular member. It is characterized by being.

According to this configuration, the contact area of the upper contact portion with respect to the column is expanded, and the contact area of the lower contact portion with the tubular member is expanded, so that the clamp member is stable.

The sixth invention is characterized in that the upper contact portion and the lower contact portion are made of one plate material.

According to this configuration, it is possible to suppress the relative positional deviation between the upper contact portion and the lower contact portion, and it is possible to accurately align the support column and the tubular member.

In a seventh aspect of the invention, the plate material has an upper plate portion extending in a direction orthogonal to the outer peripheral surface of the column, a lower plate portion extending in a direction orthogonal to the outer peripheral surface of the tubular member, and the upper plate portion. A connecting plate portion extending from the portion to the lower plate portion is provided, the upper plate portion is provided with the upper contact portion, and the lower plate portion is provided with the lower contact portion. ..

According to this configuration, the relative positional relationship between the upper plate portion and the lower plate portion can be fixed by the connecting plate portion. Further, since the upper plate portion, the lower plate portion and the connecting plate portion are integrated, the rigidity is increased.

According to the present invention, since a plurality of columns can be connected by a detachable connecting tool to construct a support work, it is possible to carry in by human power and the convenience can be enhanced. Further, the clamp member can prevent misalignment at the connecting portion of the columns, and can appropriately maintain the distance between the columns to support the structure in a stable state.

FIG. 1 is a perspective view of a support work according to an embodiment of the present invention. FIG. 2 is a perspective view of the lower connector mounted on the H-shaped steel. FIG. 3 is a perspective view of the clamp member as viewed from above. FIG. 4 is a perspective view of the clamp member as viewed from below. FIG. 5 is a plan view of the clamp member. FIG. 6 is a bottom view of the clamp member. FIG. 7 is a plan view of the clamp member in the open state. FIG. 8 is a perspective view showing a state in which the lower end portion of the column and the upper end portion of the tubular member of the lower connector are misaligned. FIG. 9 is an enlarged view of part A of FIG. 8 as viewed from the side. FIG. 10 is a perspective view showing a state in which the lower end portion of the column and the upper end portion of the tubular member of the lower connector are clamped by the clamp member. FIG. 11 is a perspective view showing a state in which all four columns are clamped. FIG. 12 is a perspective view showing a state in which the lower ends of the four columns are connected to each other by a cloth material. FIG. 13 is a perspective view showing a state in which the intermediate portions of the four columns are connected to each other by a cloth material.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 is a perspective view showing a state in which the structure 200 (indicated by a virtual line) is supported by the support work 1 according to the embodiment of the present invention. The support work 1 is used, for example, when supporting various structures 200 at various construction sites, construction sites, and the like. As the structure 200, for example, a concrete formwork used for making a concrete floor or a beam can be mentioned, and the concrete formwork can be supported by the support work 1 from the time the concrete is placed until the concrete is hardened. .. Further, the structure 200 may be, for example, a bridge or the like, and is not particularly limited.

For example, a plurality of support works 1 are constructed to support one structure 200, and these support works 1 are connected to each other. Each support 1 can be constructed by connecting and integrating a plurality of columns 11 to 14 extending in the vertical direction and arranged at intervals in the horizontal direction, but as shown in FIG. 1, the columns can be constructed. 15 to 18 can also be combined and constructed. Further, for example, one support 1 having four columns 11 to 14 can be arranged horizontally and connected to each other for use. In this case, a plurality of support works 1 can be arranged according to the shape of the structure 200. For example, the support works 1 can be arranged in a straight line and connected to each other, or one support work 1 can be used alone. The number and arrangement of the support works 1 can be arbitrarily set depending on the shape, size, and weight of the structure 1.

In the present embodiment, the support work 1 includes the first to fourth columns 11 to 14 as columns arranged at intervals in the horizontal direction, but the number of columns is not limited to four. It may be 3 or less, or 5 or more. The support 1 also includes 5th to 8th columns 15 to 18 connected on the 1st to 4th columns 11 to 14. The fifth column 15 is connected on the first column 11, the sixth column 16 is connected on the second column 12, the seventh column 17 is connected on the third column 13, and the fourth column 14 is connected. The eighth column 18 is connected to the top. If the height of the support work 1 may be low, the 5th to 8th columns 15 to 18 are unnecessary. Further, although not shown, another column may be connected on the 5th to 8th columns 15 to 18.

The first to eighth columns 11 to 18 are all the same. In this embodiment, the first to fourth columns 11 to 14 are arranged at substantially equal intervals from each other so as to be located at the vertices of a regular quadrangle in a plan view, but the present invention is not limited to this, and a rectangle, a pentagon, or a pentagon in a plan view. The columns may be arranged so as to form a polygon such as a hexagon. For example, the first support column 11 is made of a metal pipe material having a circular cross section. The upper end and the lower end of the first support column 11 are open.

The intervals between the first to fourth columns 11 to 14 are set to be predetermined intervals. The spacing between the first to fourth columns 11 to 14 can be set according to the weight of the structure 200. For example, the heavier the structure 200, the narrower the spacing between the first to fourth columns 11 to 14. Is preferable. The distance between the first to fourth columns 11 to 14 can be set to, for example, 150 mm to 250 mm, and in this embodiment, it is set to 200 mm.

The support work 1 includes a lower end connecting tool 30 for connecting the lower ends of the first to fourth columns 11 to 14, and an upper end connecting tool 40 for connecting the upper ends of the fifth to eighth columns 15 to 18. It also has a jack 50. The jack 50 can be placed on an H-shaped steel 300 or the like as a support member. The jack 50 may be omitted.

The jack 50 is for adjusting the height of the first to fourth columns 11 to 14, and has a conventionally known structure. That is, the jack 50 has a base 51, a screw shaft 52 extending upward from the base 51, and a movable portion 53 screwed to the screw shaft 52. The base 51 is installed on the upper surface of the H-shaped steel 300. The height of the movable portion 53 can be changed by rotating the movable portion 53 in a state of being screwed onto the screw shaft 52. The upper surface of the movable portion 53 extends substantially horizontally, and the lower end connecting tool 30 is placed and fixed on the upper surface of the movable portion 53 as described later.

As shown in FIG. 2, the lower end connector 30 is reinforced with a substrate 30a extending in the horizontal direction and first to fourth cylinder members 31 to 34 fixed to the substrate 30a and projecting upward from the substrate 30a. It has a member 35. The substrate 30a is a portion fixed to the jack 50 and has a shape close to a quadrangle in a plan view. The upper side of the screw shaft 52 of the jack 50 penetrates through the central portion of the substrate 30a. Further, the substrate 30a is fastened and fixed to the movable portion 53 of the jack 50 by a fastening member (not shown).

The first to fourth cylinder members 31 to 34 are made of a metal pipe material formed to have substantially the same diameter as the diameter of the lower end portions of the first to fourth columns 11 to 14 constituting the support work 1. It is arranged so as to coincide with the arrangement position of the fourth column 11-14. That is, as shown in FIG. 1 and the like, the first cylinder member 31 is arranged directly under the first support column 11, and the lower end portion of the first support column 11 is abutted against the upper end portion of the first cylinder member 31. There is. Since the lower end of the first column 11 and the upper end of the first cylinder member 31 have substantially the same diameter, the entire circumference of the lower end of the first column 11 abuts on the entire circumference of the upper end of the first cylinder member 31. It has become like. Similarly, the second cylinder member 31 is arranged directly under the second support column 12, the lower end portion of the second support column 12 is abutted against the upper end portion of the second cylinder member 32, and the third cylinder member 33 is The lower end of the third column 13 is arranged directly under the third column 13 and is abutted against the upper end of the third cylinder member 33, and the fourth cylinder member 34 is arranged directly under the fourth column 14. The lower end of the fourth column 14 is abutted against the upper end of the fourth cylinder member 34.

As shown in FIG. 2, four reinforcing members 35 are provided. Each reinforcing member 35 is made of a plate material fixed to the upper surface of the substrate 30a and the outer surfaces of the first to fourth tubular members 31 to 34, and is arranged so as to project upward from the upper surface of the substrate 30a. ing. Both ends of the reinforcing member 35 are fixed to the outer surfaces of adjacent tubular members 31 to 34, and the tubular member 31 and the tubular member 32, the tubular member 32 and the tubular member 33, and the tubular member 33 and the tubular member are fixed by each reinforcing member 35. 34, the cylinder member 31 and the cylinder member 34 are connected. As a result, the tilting of the first to fourth cylinder members 31 to 34 is suppressed.

As shown in FIG. 1, the upper end connecting tool 40 is configured in the same manner as the lower end connecting tool 30, and is used as the upper end connecting tool 40 by reversing the top and bottom of the lower end connecting tool 30. You can do it. That is, the upper end connecting tool 40 has a horizontally extending substrate 40a and first to fourth cylinder members 41 to 43 (the fourth cylinder member is shown) which is fixed to the substrate 40a and protrudes downward from the substrate 40a. It has a reinforcing member (not shown).

The substrate 40a of the upper end connector 40 supports the structure 200 directly or with other members interposed therebetween. Further, a jack (not shown) can be arranged on the upper side of the substrate 40a.

The support work 1 includes first to fifth clamp members 71 to 75. The first clamp member 71 is a member for clamping the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 from the radial outside of the support column 11 and the cylinder member 31. Similarly, the second clamp member 72 clamps the lower end portion of the second strut 12 and the upper end portion of the second cylinder member 32 from the outside in the radial direction, and the third clamp member 73 is the third strut 13. The lower end portion and the upper end portion of the third cylinder member 33 are clamped from the outside in the radial direction, and the fourth clamp member 74 radially holds the lower end portion of the fourth column 14 and the upper end portion of the fourth cylinder member 34. It is a member that clamps from the outside.

While the first to fourth clamp members 71 to 74 are provided one by one, a plurality of fifth clamp members 57 are provided. The fifth clamp member 57 includes a member installed in each intermediate portion of the columns 11 to 18. Further, the fifth clamp member 57 clamps the upper end portion of the first strut 11 and the lower end portion of the fifth strut 15, similarly to the first to fourth clamp members 71 to 74, of the second strut 12. One that clamps the upper end portion and the lower end portion of the sixth column 16, one that clamps the upper end portion of the third column 13 and the lower end portion of the seventh column 17, and the upper end portion of the fourth column 14 and the eighth column 18. It includes something that clamps the lower end.

In this example, both are connected by clamping with the fifth clamp member 75 in a state where the lower ends of the first to fourth columns 11 to 14 are abutted against the upper ends of the fifth to eighth columns 15 to 18, respectively. ing. This connecting structure is the same as the connecting structure to the lower end connecting tool 30 of the first to fourth columns 11 to 14. Further, although not shown, the connecting structure between the upper ends of the fifth to eighth columns 15 to 18 and the upper end connecting tool 40 can be similarly formed, but as another connecting structure, for example, the fifth to fifth. A structure in which the upper end portions of the eight columns 15 to 18 are inserted into the first to fourth cylinder members 41 to 44 of the upper end portion connector 40 may be applied.

The first to fifth clamp members 71 to 75 are all the same. Hereinafter, the structure of the first clamp member 71 will be described in detail with reference to FIGS. 3 to 7. The first clamp member 71 rotates the first holding member 80 and the second holding member 90 for clamping the support column 11 and the first cylinder member 31 in the radial direction, and the first holding member 80 and the second holding member 90. It includes a connecting member 100 that can be connected so as to be possible, and a fastening member 110 that fastens the first sandwiching member 80 and the second sandwiching member 90. The first holding member 80 and the second holding member 90 are on one side in the radial direction (horizontal direction) of the first support column 11 and the first cylinder member 31 with respect to the outer peripheral surfaces of the first support column 11 and the first cylinder member 31. The first column 11 and the first cylinder member 31 can be clamped in the radial direction by abutting each other from the other side.

In the description of this embodiment, in the state of using the first clamp member 71, the lower side is simply referred to as "lower" and the upper side is simply referred to as "upper". Further, the side connected by the connecting member 100 in the first sandwiching member 80 and the second sandwiching member 90 is referred to as the "base end side" of the first sandwiching member 80 and the second sandwiching member 90, and the first sandwiching member 80 and The side of the second sandwiching member 90 opposite to the side connected by the connecting member 100 is referred to as the "tip side" of the first sandwiching member 80 and the second sandwiching member 90. The tip end side of the first pinching member 80 and the second pinching member 90 corresponds to one end side, and the base end side of the first pinching member 80 and the second pinching member 90 corresponds to the other end side. The direction of the first clamp member 71 is defined in this way only for convenience of explanation, and does not limit the usage state of the first clamp member 71, and the first clamp is performed in a posture other than the posture shown in the figure. It is also possible to use the member 71.

3 to 6 show a case where the first clamp member 71 is in a used state (clamped state), and FIG. 7 shows a case where the tip ends of the first clamp member 80 and the second clamp member 90 are separated from each other. It shows a state in which the first clamp member 80 and the second clamp member 90 are rotated in the direction. The state shown in FIG. 7 can be called an open state.

(Structure of the first holding member 80)
The first sandwiching member 80 is connected to the first to third upper plate portions 81a, 81b, 81c (shown in FIG. 3) and the first to third lower plate portions 82a, 82b, 82c (shown in FIG. 4). A plate portion 83 and a vertical plate portion 84 are provided. The first to third upper plate portions 81a, 81b, 81c, the first to third lower plate portions 82a, 82b, 82c, the connecting plate portion 83, and the vertical plate portion 84 are one metal plate material (for example). It can be obtained by press forming (steel plate, etc.). The first to third upper plate portions 81a, 81b, and 81c are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 (the outer shape is shown by a virtual line in FIG. 5), and the first support column 11 is provided. It extends in a direction orthogonal to the outer peripheral surface. The first upper plate portion 81a is located on the base end side of the first holding member 80, the third upper plate portion 81c is located on the tip end side of the first holding member 80, and the second upper plate portion 81b is the first upper plate portion. It is located between the portion 81a and the third upper plate portion 81c.

The first to third lower plate portions 82a, 82b, 82c are provided so as to be spaced apart from each other in the circumferential direction of the first cylinder member 31 (the outer shape is shown by a virtual line in FIG. 6), and the first cylinder member It extends in a direction orthogonal to the outer peripheral surface of 31. The first lower plate portion 82a is located on the base end side of the first holding member 80, the third lower plate portion 82c is located on the tip end side of the first holding member 80, and the second lower plate portion 82b is the first lower plate portion. It is located between the portion 82a and the third lower plate portion 82c.

As shown in FIGS. 3 and 4, the connecting plate portion 83 extends in the vertical direction from the first to third upper plate portions 81a, 81b, 81c to the first to third lower plate portions 82a, 82b, 82c. , The upper plate portions 81a, 81b, 81c and the lower plate portions 82a, 82b, 82c are connected to each other.

A vertical plate portion 84 is provided at the tip portion of the connecting plate portion 83. The vertical plate portion 84 extends in the vertical direction and extends outward in the radial direction. A notch 84a for inserting a shaft portion is provided at an intermediate portion in the vertical direction of the vertical plate portion 84.

As shown in FIG. 3, an insertion hole 85 into which the wedge of the cloth material 61, which will be described later, can be inserted is formed between the first upper plate portion 81a and the second upper plate portion 81b. Further, an insertion hole 86 into which the wedge of the cloth material 61 can be inserted is also formed between the second upper plate portion 81b and the third upper plate portion 81c. The shape and size of the insertion holes 85 and 86 can be arbitrarily set according to the shape of the wedge of the cloth material 61. The insertion holes 85 and 86 may be formed of notches, may be formed of through holes, or may be shaped like a pocket.

As shown in FIG. 5, the tip surfaces of the first to third upper plate portions 81a, 81b, 81c abut on the outer peripheral surface of the first support column 11, respectively, of the first to third upper plate portions 81d, 81e, 81f. It is said that. The first to third upper contact portions 81d, 81e, and 81f are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 so as to abut on the outer peripheral surfaces of the first support column 11 so as to be in contact with each other. It has become. The first to third upper contact portions 81d, 81e, and 81f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first column 11, and are located on the same circle centered on the axis of the first column 11. It is formed to do.

Further, an insertion hole 85 into which the wedge of the cloth material 61 can be inserted is also formed between the first lower plate portion 82a and the second lower plate portion 82b. Further, an insertion hole 86 into which the wedge of the cloth material 61 can be inserted is also formed between the second lower plate portion 82b and the third lower plate portion 82c. The upper insertion hole 85 and the lower insertion hole 85 are arranged at the same position in the circumferential direction. The same applies to the insertion hole 86.

As shown in FIG. 6, the tip surfaces of the first to third lower plate portions 82a, 82b, 82c abut on the outer peripheral surface of the first cylinder member 31, respectively, the first to third lower abutting portions 82d, 82e. , 82f. The first to third lower contact portions 82d, 82e, and 82f are provided at intervals in the circumferential direction of the first cylinder member 31, and are located on the outer peripheral surface of the first cylinder member 31 so as to be separated from each other. It is designed to come into contact. The first to third lower contact portions 82d, 82e, and 82f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first cylinder member 31, and are the same circle centered on the axis of the first cylinder member 31. It is formed to be located on top. Further, when viewed from the vertical direction, the first to third lower contact portions 82d, 82e, 82f and the first to third upper contact portions 81d, 81e, 81f are arranged so as to overlap each other. There is.

The first having the first to third upper plate portions 81a, 81b, 81c having the first to third upper contact portions 81d, 81e, 81f and the first to third lower contact portions 82d, 82e, 82f. -Since the third lower plate portions 82a, 82b, 82c are made of one plate material, the first to third upper contact portions 81d, 81e, 81f and the first to third lower contact portions 82d, 82e , 82f is composed of one plate material.

(Structure of the second holding member 90)
The second sandwiching member 90 includes the first to third upper plate portions 91a to 91c (shown in FIG. 3), the first to third lower plate portions 92a to 92c (shown in FIG. 4), and the connecting plate portion 93. , A pair of support plate portions 94 are provided. The first to third upper plate portions 91a, 91b, 91c, the first to third lower plate portions 92a, 92b, 92c, the connecting plate portion 93, and the support plate portion 94 are the same as the first holding member 80. It can be obtained from a single metal plate. The first to third upper plate portions 91a, 91b, and 91c are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 (the outer shape is shown by a virtual line in FIG. 5), and the first support column 11 is provided. It extends in a direction orthogonal to the outer peripheral surface. The first upper plate portion 91a is located on the base end side of the second sandwiching member 90, and is in close proximity to the first upper plate portion 81a of the first sandwiching member 80. The third upper plate portion 91c is located on the tip end side of the first sandwiching member 80, and is close to the third upper plate portion 81c of the second sandwiching member 90. The second upper plate portion 91b is located between the first upper plate portion 91a and the third upper plate portion 91c.

The first to third lower plate portions 92a, 92b, and 92c are provided so as to be spaced apart from each other in the circumferential direction of the first cylinder member 31 (the outer shape is shown by a virtual line in FIG. 6), and the first cylinder member It extends in a direction orthogonal to the outer peripheral surface of 31. The first lower plate portion 92a is located on the base end side of the second sandwiching member 90, and is in close proximity to the first lower plate portion 82a of the first sandwiching member 80. The third lower plate portion 92c is located on the tip end side of the second sandwiching member 90 and is in close proximity to the third upper plate portion 82c of the first sandwiching member 80. The second lower plate portion 92b is located between the first lower plate portion 92a and the third lower plate portion 92c.

The connecting plate portion 93 extends in the vertical direction from the first to third upper plate portions 91a, 91b, 91c to the first to third lower plate portions 92a, 92b, 92c, and the upper plate portions 91a, 91b, 91c. It is a portion connecting the lower plate portions 92a, 92b, and 92c.

A pair of support plate portions 94, 94 are provided at the tip portion of the connecting plate portion 93 at intervals in the vertical direction. The support plate portions 94 and 94 project outward in the radial direction and are substantially parallel to each other.

An insertion hole 95 into which the wedge of the cloth material 61 can be inserted is formed between the first upper plate portion 91a and the second upper plate portion 91b. Further, an insertion hole 96 into which the wedge of the cloth material 61 can be inserted is also formed between the second upper plate portion 91b and the third upper plate portion 91c.

As shown in FIG. 5, the tip surfaces of the first to third upper plate portions 91a, 91b, 91c abut on the outer peripheral surface of the first support column 11, respectively, of the first to third upper plate portions 91d, 91e, 91f. It is said that. The first to third upper contact portions 91d, 91e, and 91f are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 so as to abut on the outer peripheral surface of the first support column 11 so as to be in contact with each other. It has become. The first to third upper contact portions 91d, 91e, and 91f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first support column 11.

Further, an insertion hole 95 into which the wedge of the cloth material 61 can be inserted is also formed between the first lower plate portion 92a and the second lower plate portion 92b. Further, an insertion hole 96 into which the wedge of the cloth material 61 can be inserted is also formed between the second lower plate portion 92b and the third lower plate portion 92c. The insertion holes 95, 96 can be configured in the same manner as the insertion holes 85, 86 of the first sandwiching member 80, and all the insertion holes 85, 86, 95, 96 have the same shape and size. be able to.

As shown in FIG. 6, the tip surfaces of the first to third lower plate portions 92a, 92b, 92c abut on the outer peripheral surface of the first cylinder member 31, respectively, the first to third lower abutting portions 92d, 92e. , 92f. The first to third lower contact portions 92d, 92e, and 92f are provided at intervals in the circumferential direction of the first cylinder member 31, and are separated from each other on the outer peripheral surface of the first cylinder member 31. It is designed to come into contact. The first to third lower contact portions 92d, 92e, and 92f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first tubular member 31. When viewed from the vertical direction, the first to third lower contact portions 92d, 92e, 92f and the first to third upper contact portions 91d, 91e, 91f are arranged so as to overlap each other. The first to third upper contact portions 91d, 91e, 91f and the first to third lower contact portions 92d, 92e, 92f are composed of one plate material.

(Structure of connecting member 100)
As shown in FIGS. 3 and 4, the connecting member 100 can be made of, for example, a metal round bar, and extends in the vertical direction. The upper portion of the connecting member 100 penetrates the first upper plate portion 81a of the first sandwiching member 80 and the first upper plate portion 91a of the second sandwiching member 90. That is, although not shown, a through hole through which the upper portion of the connecting member 100 can be inserted is formed in the first upper plate portion 81a of the first sandwiching member 80 and the first upper plate portion 91a of the second sandwiching member 90. The connecting member 100 is inserted into these through holes and is prevented from coming off by caulking or the like.

Further, the lower portion of the connecting member 100 penetrates the second lower plate portion 82a of the first sandwiching member 80 and the second lower plate portion 92a of the second sandwiching member 90. Similar to the upper side, the connecting member 100 is inserted into a through hole (not shown) formed in the second lower plate portion 82a of the first sandwiching member 80 and the second lower plate portion 92a of the second sandwiching member 90. In this state, it is prevented from coming off by caulking.

With the connecting member 100 inserted through each of the through holes, the first sandwiching member 80 is rotated with respect to the second sandwiching member 90 around the center line of the connecting member 100, and the second sandwiching member 90 is seconded. 1 It is possible to rotate the connecting member 100 around the center line with respect to the holding member 80. As a result, the open state shown in FIG. 7 can be obtained.

(Structure of fastening member 110)
The fastening member 110 includes at least a fastening shaft portion 111, a nut 112, and a support shaft 113. As shown in FIG. 3 and the like, a large diameter portion 111a is formed at the base end portion of the fastening shaft portion 111. The portion of the fastening shaft portion 111 other than the large diameter portion 111a is composed of a screw rod having a thread groove continuously formed on the outer peripheral surface thereof, and may be formed of, for example, a bolt shaft portion or the like. The nut 112 is a member that is screwed into the fastening shaft portion 111. The flange portion 112a of the nut 112 comes into contact with the peripheral edge portion of the shaft portion insertion notch portion 84a in the vertical plate portion 84.

The support shaft 113 is a member for rotatably supporting the large diameter portion 111a of the fastening shaft portion 111 with respect to the tip end side of the second holding member 90. The support shaft 113 is made of a round bar member extending in the vertical direction like the connecting member 100. The upper portion of the support shaft 113 penetrates the upper support plate portion 94. That is, the upper support plate portion 94 is formed with an insertion hole (not shown) through which the upper portion of the support shaft 113 can be inserted. The upper portion of the support shaft 113 is inserted through this insertion hole, and in this insertion state, the support shaft 113 can rotate relative to the upper support plate portion 94 around the center line of the support shaft 113. It has become. The upper end of the support shaft 113 is prevented from coming off by caulking.

The lower portion of the support shaft 113 penetrates the lower support plate portion 94. That is, the lower support plate portion 94 is formed with an insertion hole (not shown) through which the lower portion of the support shaft 113 can be inserted. The lower portion of the support shaft 113 is inserted through this insertion hole, and in this insertion state, the support shaft 113 rotates relative to the lower support plate portion 94 around the center line of the support shaft 113. It is possible. The lower end of the support shaft 113 is prevented from coming off by caulking.

By rotating the fastening shaft portion 111, the fastening shaft portion 111 is inserted into the shaft portion inserting cutout portion 84a of the vertical plate member 84 as shown in FIG. The portion 111 can be switched to a state in which the vertical plate member 84 is removed from the shaft portion insertion notch portion 84a. When the nut 112 is tightened with the fastening shaft portion 111 inserted into the shaft portion insertion notch portion 84a of the vertical plate member 84, the tip end side of the first pinching member 80 and the tip end side of the second pinching member 90 approach each other. Fastened in the direction.

(Composition of cloth material)
As shown in FIG. 1, the support work 1 includes the first to fifth cloth materials 61 to 65 as a plurality of cloth materials. The first to fifth cloth materials 61 to 65 are the same, and each extends in the horizontal direction, and wedges protruding downward are provided at both ends.

The first cloth material 61 connects the first support column 11 and the second support column 12 via the first clamp member 71 and the second clamp member 72. Specifically, one wedge of the first cloth material 61 is inserted into the insertion holes 85, 95 (or the insertion holes 86, 96) of the first clamp member 71, and the other wedge is the insertion hole of the second clamp member 72. It is inserted into the insertion hole (not shown). Hereinafter, in the same manner, the second cloth material 62 connects the second support column 12 and the third support column 13 via the second clamp member 72 and the third clamp member 73. The third cloth material 63 connects the third support column 13 and the fourth support column 14 via the third clamp member 73 and the fourth clamp member 74. The fourth cloth material 64 connects the first support column 11 and the fourth support column 14 via the first clamp member 71 and the fourth clamp member 74. Further, the fifth cloth material 65 connects the adjacent columns 11 to 18 with each other via the fifth clamp member 75 arranged in the intermediate portion of the columns 11 to 18.

The horizontal dimensions of the first to fifth cloth materials 61 to 65 are set to lengths corresponding to the intervals between the adjacent columns 11 to 14 and 15 to 18. The intervals between the adjacent columns 11 to 14 and 15 to 18 are set to be predetermined intervals according to the horizontal lengths of the first to fifth cloth materials 61 to 65.

(Construction of support work 1)
Next, a case of constructing the support work 1 configured as described above will be described. As described above, the materials constituting one support work 1 include the first to eighth columns 11 to 18, the lower end connecting tool 30, the upper end connecting tool 40, and the first to fifth clamp members 71 to 75. The first to fifth cloth materials 61 to 65 and the jack 50.

As shown in FIG. 2, the jack 50 is installed on the H-shaped steel 300, and the lower end connecting tool 30 is fixed on the jack 50. After that, as shown in FIG. 8, the first support column 11 is connected to the first cylinder member 31 of the lower end connecting tool 30. At this time, the lower end of the first column 11 is abutted against the upper end of the first cylinder member 31, but as shown in FIG. 9, the axis C of the first column 11 and the axis B of the first cylinder member 31 May be displaced in the radial direction. When the axis B and the axis C are displaced in the radial direction, the contact area between the lower end of the first support column 11 and the upper end of the first cylinder member 31 becomes smaller, and when a large vertical load is applied, the first The lower end of the support column 11 and the upper end of the first cylinder member 31 may be deformed.

In the present embodiment, as shown in FIG. 10, the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 are clamped from the outside in the radial direction by the first clamp member 71. When clamping, first, the first clamp member 71 is opened as shown in FIG. 7. Then, the first holding member 80 and the second holding member 90 are sandwiched in the radial direction between the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 by the first holding member 80 and the second holding member 90. Is relatively rotated. Next, the fastening shaft portion 111 is inserted into the shaft portion insertion notch portion 84a of the vertical plate member 84, and then the nut 112 is tightened.

By clamping the lower end of the first column 11 and the upper end of the first cylinder member 31 from the outside in the radial direction, the axis C of the first column 11 and the axis B of the first cylinder member 31 are aligned with each other. Can be done. As a result, the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 are aligned with each other, and the end faces of both are aligned with each other, so that even if a large load is applied, the end faces can be sufficiently withstood. Further, the work is simple because it is only clamped by the first clamp member 71.

As shown in FIG. 11, since the second to fourth columns 12 to 14 can be connected to the second to fourth cylinder members 32 to 34 by the second to fourth clamp members 72 to 74, the first column 11 As in the case of connection, alignment can be easily performed.

After that, as shown in FIG. 12, the first to fourth columns 11 to 14 are connected by the first to fourth cloth materials 61 to 64. Further, as shown in FIG. 13, the fifth clamp member 75 is attached above the first to fourth clamp members 71 to 74.

After that, the four fifth clamp members 75 are connected by the fifth cloth material 65. Further, as shown in FIG. 1, the fifth clamp member 75 can be further attached to each of the columns 11 to 14, and similarly connected by the fifth cloth material 65.

Further, when connecting the first to fourth columns 11 to 14 and the fifth to eighth columns 15 to 18, they can be connected by the fifth clamp member 75 in the same manner as the first to fourth clamp members 71 to 74. .. Further, the upper end portions of the fifth to eighth columns 15 to 18 can be connected to each other by the upper end portion connecting tool 40.

The support work 1 can be constructed as described above. Support work 1 can be basically constructed by attaching the first to fifth clamp members 71 to 75 and attaching the first to fifth cloth materials 61 to 65, and welding is not required, so that it is in the field. Can be easily constructed and disassembled. Since the columns 11 to 18 are not connected in the state where the support 1 is disassembled, the columns 11 to 18 can be easily separated.

(Action and effect of the embodiment)
As described above, according to this embodiment, the lower end portions of the columns 11 to 14 are in a state where the lower end portions of the columns 11 to 14 are abutted against the upper end portions of the tubular members 31 to 34 of the lower end connector 30. And the upper end portions of the tubular members 31 to 34 are clamped from the outside in the radial direction by the clamping members 71 to 74. At this time, since the lower end of the columns 11 to 14 and the upper end of the tubular members 31 to 34 have substantially the same diameter, the lower end of the columns 11 to 14 and the upper end of the tubular members 31 to 34 are aligned. The end faces match each other. As a result, the support work 1 that can sufficiently withstand a large load is constructed. Further, by connecting the plurality of columns 11 to 14 with the lower end connecting tool 30, the relative positional relationship between the columns 11 to 14 can be appropriately maintained. Therefore, it becomes possible to support the structure 200 in a stable state.

On the other hand, when the clamp members 71 to 74 are removed, the columns 11 to 14 can be separated from the lower end connecting tool 30. As a result, the support work 1 can be easily disassembled into units of one support. Since it is possible to carry the support manually with only one support, for example, a worker can manually carry the support to an underground pit or a closed room. Further, by changing the number of columns 11 to 18 to be combined, it becomes possible to easily set the allowable load of the support work 1 for each site. Further, it is also possible to freely arrange the support columns 11 to 18 according to the shape of the supporting structure 200.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Further, all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

As described above, the support work according to the present invention can be used, for example, when supporting a structure at various construction sites, construction sites, and the like.

1 Supporting work 11-14 First to fourth columns 30 Lower end fittings 31 to 34 First to fourth cylinder members 71 to 74 First to fourth clamp members 81a, 81b, 81c First to third upper plate parts 81d, 81e, 81f 1st to 3rd upper contact portions 82a, 82b, 82c 1st to 3rd lower plate portions 82d, 82e, 82f 1st to 3rd lower contact portions 83 Connecting plate portion

The present invention relates to a support work used when supporting a structure at various construction sites, construction sites, etc., and particularly belongs to the technical field of a structure for constructing a support work by connecting a plurality of pipe materials.

For example, at various construction sites and construction sites, various operations are carried out with the structure supported by the support work. Commonly used as a support work is, for example, a square strut that is integrated by welding a connecting member to four pipe materials, a one made of thick steel pipe, etc., and by using these. Heavy structures can also be supported.

Since the four pipe materials of the square strut are connected by welding and cannot be disassembled, the weight per strut increases. Further, those made of steel pipes are generally thick and thick in order to increase the allowable load, so that the weight per pipe is high. Therefore, in the case of a conventional support work consisting of a square support or a steel pipe, it is not something that a worker can manually carry at the site, and it can only be handled by a crane or the like. For this reason, it has not been possible to carry conventional square columns and steel pipes into underground pits where it is difficult to install cranes and the like, and closed chambers such as inside pipes and tanks.

Further, for example, as disclosed in Patent Documents 1 to 3, it is known that a plurality of columns are connected by a detachable connecting tool to increase the allowable load per support work. The support column of Patent Document 1 is provided with a support fitting for connecting a horizontal member or a diagonal member. By using this connecting metal fitting for supporting work, it is possible to reinforce the supporting work with a horizontal member or a diagonal material without interfering with a horizontal connecting material or the like. Further, in Patent Document 2, a horizontal member connecting collar is provided on a support column erected at a predetermined interval in the horizontal direction, a hole is formed in the horizontal member connecting collar, and the horizontal member with a wedge mechanism is connected to the horizontal member. By engaging with the holes in the brim, multiple columns are connected to build a support. Further, in Patent Document 3, a receiving metal fitting having a wedge hole is provided in a support column, and a horizontal member is engaged with the wedge hole to connect a plurality of columns to construct a support work.

Japanese Unexamined Patent Publication No. 8-270214 Japanese Unexamined Patent Publication No. 2008-57253 Japanese Unexamined Patent Publication No. 2014-1055772

According to the support works of Patent Documents 1 to 3, since a plurality of columns are connected by a detachable connecting tool, the support works can be easily disassembled and the columns can be transported in units of one. Will be possible. Generally, in the case of a support as disclosed in Patent Documents 1 to 3, the weight is such that one can be manually carried, so that a worker manually carries it into an underground pit or a closed room. And the convenience is improved. In addition, by changing the number of columns to be combined, there is an advantage that the allowable load of the support work can be easily set for each site. Further, it becomes possible to freely arrange the columns according to the shape of the supporting structure. That is, there are various merits by connecting a plurality of columns with a detachable connecting tool to construct a support work.

However, there may be a problem in terms of strength at the connecting portion of the columns that make up the support work. For example, when constructing a support by providing a connecting tool for connecting the lower ends of a plurality of columns, the lower end of the columns is abutted against the upper end of the tubular member provided on the connecting tool to be connected. If the column and the tubular member are misaligned, the end faces do not match, and if a large load is applied in this state, it may cause deformation.

The present invention has been made in view of this point, and an object of the present invention is that when a plurality of columns are connected by a detachable connecting tool to construct a support work, misalignment at the connecting portion of the columns is performed. The purpose is to prevent the structure from being supported in a stable state.

In order to achieve the above object, the first invention comprises a plurality of columns extending in the vertical direction and arranged at intervals in the horizontal direction, and a connecting tool for connecting the lower ends of the columns. In the support work for supporting the structure from below, the connecting tool comprises a substrate and a plurality of tubular members fixed to the substrate and protruding upward to have a diameter substantially the same as the diameter of the lower end portion of the column. The lower end of each column is abutted against the upper end of each cylinder member, and the lower end of the column and the upper end of the cylinder member are brought into contact with the column and the radial outside of the cylinder member. It is characterized by having a plurality of clamping members for clamping.

According to this configuration, the lower end of the strut and the upper end of the tubular member are clamped from the outside in the radial direction by one clamping member while the lower end of the strut is abutted against the upper end of the tubular member of the connector. Will be done. That is, since the lower end portion of the column and the upper end portion of the tubular member are clamped at the same time by one clamp member, the relative movement between the column and the tubular member is prohibited. At this time, since the lower end of the column and the upper end of the tubular member have substantially the same diameter, the lower end of the column and the upper end of the tubular member are aligned with each other, and the end faces coincide with each other. As a result, a support work that can sufficiently withstand a large load is constructed. Further, by connecting a plurality of columns with a connecting tool, the relative positional relationship between the columns can be appropriately maintained. Therefore, it becomes possible to support the structure in a stable state.

On the other hand, if the clamp member is removed, the support column can be separated from the connector. As a result, the support work can be easily disassembled into units of one column. Since it is possible to carry the support manually with only one support, for example, a worker can manually carry the support to an underground pit or a closed room. In addition, by changing the number of columns to be combined, it is possible to easily set the allowable load of the support work for each site. Further, it becomes possible to freely arrange the columns according to the shape of the supporting structure. It is also possible to connect and use a plurality of support works. When connecting the support works, a separate cloth material or the like can be used.

Further , the support column includes a first support column and a second support column arranged at intervals in the horizontal direction, and the cylinder member includes a first cylinder member to which the lower end portion of the first support column is abutted. The clamp member includes a second cylinder member to which the lower end portion of the second support column is abutted, and the clamp member includes a first clamp member that clamps the lower end portion of the first support column and the upper end portion of the first cylinder member. A second clamp member for clamping the lower end portion of the second support column and the upper end portion of the second cylinder member is included, and one end portion of the cloth material is connected to the first clamp member, and the second clamp member is connected to the first clamp member. Is characterized in that the other end of the cloth material is connected.

According to this configuration, since the first strut and the second strut can be connected by the cloth material, the strength of the support work can be improved.

The second invention is characterized in that the clamp member includes an upper contact portion that abuts on the outer peripheral surface of the support column and a lower contact portion that abuts on the outer peripheral surface of the tubular member.

According to this configuration, the upper contact portion of the clamp member abuts on the outer peripheral surface of the column, and the lower contact portion abuts on the outer peripheral surface of the tubular member, so that the column and the tubular member can be firmly clamped.

In the third aspect of the invention, a plurality of the upper contact portions are provided at intervals in the circumferential direction of the support column, and a plurality of lower contact portions are provided at intervals in the circumferential direction of the tubular member. It is characterized by being.

According to this configuration, since the plurality of upper contact portions abut on the outer peripheral surface of the column and the plurality of lower contact portions abut on the outer peripheral surface of the tubular member, the positions in the radial direction of the column and the tubular member The alignment is surely done.

In the fourth aspect of the invention, the upper contact portion extends in an arc shape along the outer peripheral surface of the support column, and the lower contact portion extends in an arc shape along the outer peripheral surface of the tubular member. It is characterized by being.

According to this configuration, the contact area of the upper contact portion with respect to the column is expanded, and the contact area of the lower contact portion with the tubular member is expanded, so that the clamp member is stable.

The fifth invention is characterized in that the upper contact portion and the lower contact portion are made of one plate material.

According to this configuration, it is possible to suppress the relative positional deviation between the upper contact portion and the lower contact portion, and it is possible to accurately align the support column and the tubular member.

Further , the plate material includes an upper plate portion extending in a direction orthogonal to the outer peripheral surface of the column, a lower plate portion extending in a direction orthogonal to the outer peripheral surface of the tubular member, and the lower plate portion from the upper plate portion. A connecting plate portion extending to the side plate portion is provided, the upper plate portion is provided with the upper contact portion, and the lower plate portion is provided with the lower contact portion.

According to this configuration, the relative positional relationship between the upper plate portion and the lower plate portion can be fixed by the connecting plate portion. Further, since the upper plate portion, the lower plate portion and the connecting plate portion are integrated, the rigidity is increased.

According to the present invention, since a plurality of columns can be connected by a detachable connecting tool to construct a support work, it is possible to carry in by human power and the convenience can be enhanced. Further, the clamp member can prevent misalignment at the connecting portion of the columns, and can appropriately maintain the distance between the columns to support the structure in a stable state.

FIG. 1 is a perspective view of a support work according to an embodiment of the present invention. FIG. 2 is a perspective view of the lower connector mounted on the H-shaped steel. FIG. 3 is a perspective view of the clamp member as viewed from above. FIG. 4 is a perspective view of the clamp member as viewed from below. FIG. 5 is a plan view of the clamp member. FIG. 6 is a bottom view of the clamp member. FIG. 7 is a plan view of the clamp member in the open state. FIG. 8 is a perspective view showing a state in which the lower end portion of the column and the upper end portion of the tubular member of the lower connector are misaligned. FIG. 9 is an enlarged view of part A of FIG. 8 as viewed from the side. FIG. 10 is a perspective view showing a state in which the lower end portion of the column and the upper end portion of the tubular member of the lower connector are clamped by the clamp member. FIG. 11 is a perspective view showing a state in which all four columns are clamped. FIG. 12 is a perspective view showing a state in which the lower ends of the four columns are connected to each other by a cloth material. FIG. 13 is a perspective view showing a state in which the intermediate portions of the four columns are connected to each other by a cloth material.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 is a perspective view showing a state in which the structure 200 (indicated by a virtual line) is supported by the support work 1 according to the embodiment of the present invention. The support work 1 is used, for example, when supporting various structures 200 at various construction sites, construction sites, and the like. As the structure 200, for example, a concrete formwork used for making a concrete floor or a beam can be mentioned, and the concrete formwork can be supported by the support work 1 from the time the concrete is placed until the concrete is hardened. .. Further, the structure 200 may be, for example, a bridge or the like, and is not particularly limited.

For example, a plurality of support works 1 are constructed to support one structure 200, and these support works 1 are connected to each other. Each support 1 can be constructed by connecting and integrating a plurality of columns 11 to 14 extending in the vertical direction and arranged at intervals in the horizontal direction, but as shown in FIG. 1, the columns can be constructed. 15 to 18 can also be combined and constructed. Further, for example, one support 1 having four columns 11 to 14 can be arranged horizontally and connected to each other for use. In this case, a plurality of support works 1 can be arranged according to the shape of the structure 200. For example, the support works 1 can be arranged in a straight line and connected to each other, or one support work 1 can be used alone. The number and arrangement of the support works 1 can be arbitrarily set depending on the shape, size, and weight of the structure 1.

In the present embodiment, the support work 1 includes the first to fourth columns 11 to 14 as columns arranged at intervals in the horizontal direction, but the number of columns is not limited to four. It may be 3 or less, or 5 or more. The support 1 also includes 5th to 8th columns 15 to 18 connected on the 1st to 4th columns 11 to 14. The fifth column 15 is connected on the first column 11, the sixth column 16 is connected on the second column 12, the seventh column 17 is connected on the third column 13, and the fourth column 14 is connected. The eighth column 18 is connected to the top. If the height of the support work 1 may be low, the 5th to 8th columns 15 to 18 are unnecessary. Further, although not shown, another column may be connected on the 5th to 8th columns 15 to 18.

The first to eighth columns 11 to 18 are all the same. In this embodiment, the first to fourth columns 11 to 14 are arranged at substantially equal intervals from each other so as to be located at the vertices of a regular quadrangle in a plan view, but the present invention is not limited to this, and a rectangle, a pentagon, or a pentagon in a plan view. The columns may be arranged so as to form a polygon such as a hexagon. For example, the first support column 11 is made of a metal pipe material having a circular cross section. The upper end and the lower end of the first support column 11 are open.

The intervals between the first to fourth columns 11 to 14 are set to be predetermined intervals. The spacing between the first to fourth columns 11 to 14 can be set according to the weight of the structure 200. For example, the heavier the structure 200, the narrower the spacing between the first to fourth columns 11 to 14. Is preferable. The distance between the first to fourth columns 11 to 14 can be set to, for example, 150 mm to 250 mm, and in this embodiment, it is set to 200 mm.

The support work 1 includes a lower end connecting tool 30 for connecting the lower ends of the first to fourth columns 11 to 14, and an upper end connecting tool 40 for connecting the upper ends of the fifth to eighth columns 15 to 18. It also has a jack 50. The jack 50 can be placed on an H-shaped steel 300 or the like as a support member. The jack 50 may be omitted.

The jack 50 is for adjusting the height of the first to fourth columns 11 to 14, and has a conventionally known structure. That is, the jack 50 has a base 51, a screw shaft 52 extending upward from the base 51, and a movable portion 53 screwed to the screw shaft 52. The base 51 is installed on the upper surface of the H-shaped steel 300. The height of the movable portion 53 can be changed by rotating the movable portion 53 in a state of being screwed onto the screw shaft 52. The upper surface of the movable portion 53 extends substantially horizontally, and the lower end connecting tool 30 is placed and fixed on the upper surface of the movable portion 53 as described later.

As shown in FIG. 2, the lower end connector 30 is reinforced with a substrate 30a extending in the horizontal direction and first to fourth cylinder members 31 to 34 fixed to the substrate 30a and projecting upward from the substrate 30a. It has a member 35. The substrate 30a is a portion fixed to the jack 50 and has a shape close to a quadrangle in a plan view. The upper side of the screw shaft 52 of the jack 50 penetrates through the central portion of the substrate 30a. Further, the substrate 30a is fastened and fixed to the movable portion 53 of the jack 50 by a fastening member (not shown).

The first to fourth cylinder members 31 to 34 are made of a metal pipe material formed to have substantially the same diameter as the diameter of the lower end portions of the first to fourth columns 11 to 14 constituting the support work 1. It is arranged so as to coincide with the arrangement position of the fourth column 11-14. That is, as shown in FIG. 1 and the like, the first cylinder member 31 is arranged directly under the first support column 11, and the lower end portion of the first support column 11 is abutted against the upper end portion of the first cylinder member 31. There is. Since the lower end of the first column 11 and the upper end of the first cylinder member 31 have substantially the same diameter, the entire circumference of the lower end of the first column 11 abuts on the entire circumference of the upper end of the first cylinder member 31. It has become like. Similarly, the second cylinder member 31 is arranged directly under the second support column 12, the lower end portion of the second support column 12 is abutted against the upper end portion of the second cylinder member 32, and the third cylinder member 33 is The lower end of the third column 13 is arranged directly under the third column 13 and is abutted against the upper end of the third cylinder member 33, and the fourth cylinder member 34 is arranged directly under the fourth column 14. The lower end of the fourth column 14 is abutted against the upper end of the fourth cylinder member 34.

As shown in FIG. 2, four reinforcing members 35 are provided. Each reinforcing member 35 is made of a plate material fixed to the upper surface of the substrate 30a and the outer surfaces of the first to fourth tubular members 31 to 34, and is arranged so as to project upward from the upper surface of the substrate 30a. ing. Both ends of the reinforcing member 35 are fixed to the outer surfaces of adjacent tubular members 31 to 34, and the tubular member 31 and the tubular member 32, the tubular member 32 and the tubular member 33, and the tubular member 33 and the tubular member are fixed by each reinforcing member 35. 34, the cylinder member 31 and the cylinder member 34 are connected. As a result, the tilting of the first to fourth cylinder members 31 to 34 is suppressed.

As shown in FIG. 1, the upper end connecting tool 40 is configured in the same manner as the lower end connecting tool 30, and is used as the upper end connecting tool 40 by reversing the top and bottom of the lower end connecting tool 30. You can do it. That is, the upper end connecting tool 40 has a horizontally extending substrate 40a and first to fourth cylinder members 41 to 43 (the fourth cylinder member is shown) which is fixed to the substrate 40a and protrudes downward from the substrate 40a. It has a reinforcing member (not shown).

The substrate 40a of the upper end connector 40 supports the structure 200 directly or with other members interposed therebetween. Further, a jack (not shown) can be arranged on the upper side of the substrate 40a.

The support work 1 includes first to fifth clamp members 71 to 75. The first clamp member 71 is a member for clamping the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 from the radial outside of the support column 11 and the cylinder member 31. Similarly, the second clamp member 72 clamps the lower end portion of the second strut 12 and the upper end portion of the second cylinder member 32 from the outside in the radial direction, and the third clamp member 73 is the third strut 13. The lower end portion and the upper end portion of the third cylinder member 33 are clamped from the outside in the radial direction, and the fourth clamp member 74 radially holds the lower end portion of the fourth column 14 and the upper end portion of the fourth cylinder member 34. It is a member that clamps from the outside.

While the first to fourth clamp members 71 to 74 are provided one by one, a plurality of fifth clamp members 57 are provided. The fifth clamp member 57 includes a member installed in each intermediate portion of the columns 11 to 18. Further, the fifth clamp member 57 clamps the upper end portion of the first strut 11 and the lower end portion of the fifth strut 15, similarly to the first to fourth clamp members 71 to 74, of the second strut 12. One that clamps the upper end portion and the lower end portion of the sixth column 16, one that clamps the upper end portion of the third column 13 and the lower end portion of the seventh column 17, and the upper end portion of the fourth column 14 and the eighth column 18. It includes something that clamps the lower end.

In this example, both are connected by clamping with the fifth clamp member 75 in a state where the lower ends of the first to fourth columns 11 to 14 are abutted against the upper ends of the fifth to eighth columns 15 to 18, respectively. ing. This connecting structure is the same as the connecting structure to the lower end connecting tool 30 of the first to fourth columns 11 to 14. Further, although not shown, the connecting structure between the upper ends of the fifth to eighth columns 15 to 18 and the upper end connecting tool 40 can be similarly formed, but as another connecting structure, for example, the fifth to fifth. A structure in which the upper end portions of the eight columns 15 to 18 are inserted into the first to fourth cylinder members 41 to 44 of the upper end portion connector 40 may be applied.

The first to fifth clamp members 71 to 75 are all the same. Hereinafter, the structure of the first clamp member 71 will be described in detail with reference to FIGS. 3 to 7. The first clamp member 71 rotates the first holding member 80 and the second holding member 90 for clamping the support column 11 and the first cylinder member 31 in the radial direction, and the first holding member 80 and the second holding member 90. It includes a connecting member 100 that can be connected so as to be possible, and a fastening member 110 that fastens the first sandwiching member 80 and the second sandwiching member 90. The first holding member 80 and the second holding member 90 are on one side in the radial direction (horizontal direction) of the first support column 11 and the first cylinder member 31 with respect to the outer peripheral surfaces of the first support column 11 and the first cylinder member 31. The first column 11 and the first cylinder member 31 can be clamped in the radial direction by abutting each other from the other side.

In the description of this embodiment, in the state of using the first clamp member 71, the lower side is simply referred to as "lower" and the upper side is simply referred to as "upper". Further, the side connected by the connecting member 100 in the first sandwiching member 80 and the second sandwiching member 90 is referred to as the "base end side" of the first sandwiching member 80 and the second sandwiching member 90, and the first sandwiching member 80 and The side of the second sandwiching member 90 opposite to the side connected by the connecting member 100 is referred to as the "tip side" of the first sandwiching member 80 and the second sandwiching member 90. The tip end side of the first pinching member 80 and the second pinching member 90 corresponds to one end side, and the base end side of the first pinching member 80 and the second pinching member 90 corresponds to the other end side. The direction of the first clamp member 71 is defined in this way only for convenience of explanation, and does not limit the usage state of the first clamp member 71, and the first clamp is performed in a posture other than the posture shown in the figure. It is also possible to use the member 71.

3 to 6 show a case where the first clamp member 71 is in a used state (clamped state), and FIG. 7 shows a case where the tip ends of the first clamp member 80 and the second clamp member 90 are separated from each other. It shows a state in which the first clamp member 80 and the second clamp member 90 are rotated in the direction. The state shown in FIG. 7 can be called an open state.

(Structure of the first holding member 80)
The first sandwiching member 80 is connected to the first to third upper plate portions 81a, 81b, 81c (shown in FIG. 3) and the first to third lower plate portions 82a, 82b, 82c (shown in FIG. 4). A plate portion 83 and a vertical plate portion 84 are provided. The first to third upper plate portions 81a, 81b, 81c, the first to third lower plate portions 82a, 82b, 82c, the connecting plate portion 83, and the vertical plate portion 84 are one metal plate material (for example). It can be obtained by press forming (steel plate, etc.). The first to third upper plate portions 81a, 81b, and 81c are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 (the outer shape is shown by a virtual line in FIG. 5), and the first support column 11 is provided. It extends in a direction orthogonal to the outer peripheral surface. The first upper plate portion 81a is located on the base end side of the first holding member 80, the third upper plate portion 81c is located on the tip end side of the first holding member 80, and the second upper plate portion 81b is the first upper plate portion. It is located between the portion 81a and the third upper plate portion 81c.

The first to third lower plate portions 82a, 82b, 82c are provided so as to be spaced apart from each other in the circumferential direction of the first cylinder member 31 (the outer shape is shown by a virtual line in FIG. 6), and the first cylinder member It extends in a direction orthogonal to the outer peripheral surface of 31. The first lower plate portion 82a is located on the base end side of the first holding member 80, the third lower plate portion 82c is located on the tip end side of the first holding member 80, and the second lower plate portion 82b is the first lower plate portion. It is located between the portion 82a and the third lower plate portion 82c.

As shown in FIGS. 3 and 4, the connecting plate portion 83 extends in the vertical direction from the first to third upper plate portions 81a, 81b, 81c to the first to third lower plate portions 82a, 82b, 82c. , The upper plate portions 81a, 81b, 81c and the lower plate portions 82a, 82b, 82c are connected to each other.

A vertical plate portion 84 is provided at the tip portion of the connecting plate portion 83. The vertical plate portion 84 extends in the vertical direction and extends outward in the radial direction. A notch 84a for inserting a shaft portion is provided at an intermediate portion in the vertical direction of the vertical plate portion 84.

As shown in FIG. 3, an insertion hole 85 into which the wedge of the cloth material 61, which will be described later, can be inserted is formed between the first upper plate portion 81a and the second upper plate portion 81b. Further, an insertion hole 86 into which the wedge of the cloth material 61 can be inserted is also formed between the second upper plate portion 81b and the third upper plate portion 81c. The shape and size of the insertion holes 85 and 86 can be arbitrarily set according to the shape of the wedge of the cloth material 61. The insertion holes 85 and 86 may be formed of notches, may be formed of through holes, or may be shaped like a pocket.

As shown in FIG. 5, the tip surfaces of the first to third upper plate portions 81a, 81b, 81c abut on the outer peripheral surface of the first support column 11, respectively, of the first to third upper plate portions 81d, 81e, 81f. It is said that. The first to third upper contact portions 81d, 81e, and 81f are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 so as to abut on the outer peripheral surfaces of the first support column 11 so as to be in contact with each other. It has become. The first to third upper contact portions 81d, 81e, and 81f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first column 11, and are located on the same circle centered on the axis of the first column 11. It is formed to do.

Further, an insertion hole 85 into which the wedge of the cloth material 61 can be inserted is also formed between the first lower plate portion 82a and the second lower plate portion 82b. Further, an insertion hole 86 into which the wedge of the cloth material 61 can be inserted is also formed between the second lower plate portion 82b and the third lower plate portion 82c. The upper insertion hole 85 and the lower insertion hole 85 are arranged at the same position in the circumferential direction. The same applies to the insertion hole 86.

As shown in FIG. 6, the tip surfaces of the first to third lower plate portions 82a, 82b, 82c abut on the outer peripheral surface of the first cylinder member 31, respectively, the first to third lower abutting portions 82d, 82e. , 82f. The first to third lower contact portions 82d, 82e, and 82f are provided at intervals in the circumferential direction of the first cylinder member 31, and are located on the outer peripheral surface of the first cylinder member 31 so as to be separated from each other. It is designed to come into contact. The first to third lower contact portions 82d, 82e, and 82f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first cylinder member 31, and are the same circle centered on the axis of the first cylinder member 31. It is formed to be located on top. Further, when viewed from the vertical direction, the first to third lower contact portions 82d, 82e, 82f and the first to third upper contact portions 81d, 81e, 81f are arranged so as to overlap each other. There is.

The first having the first to third upper plate portions 81a, 81b, 81c having the first to third upper contact portions 81d, 81e, 81f and the first to third lower contact portions 82d, 82e, 82f. -Since the third lower plate portions 82a, 82b, 82c are made of one plate material, the first to third upper contact portions 81d, 81e, 81f and the first to third lower contact portions 82d, 82e , 82f is composed of one plate material.

(Structure of the second holding member 90)
The second sandwiching member 90 includes the first to third upper plate portions 91a to 91c (shown in FIG. 3), the first to third lower plate portions 92a to 92c (shown in FIG. 4), and the connecting plate portion 93. , A pair of support plate portions 94 are provided. The first to third upper plate portions 91a, 91b, 91c, the first to third lower plate portions 92a, 92b, 92c, the connecting plate portion 93, and the support plate portion 94 are the same as the first holding member 80. It can be obtained from a single metal plate. The first to third upper plate portions 91a, 91b, and 91c are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 (the outer shape is shown by a virtual line in FIG. 5), and the first support column 11 is provided. It extends in a direction orthogonal to the outer peripheral surface. The first upper plate portion 91a is located on the base end side of the second sandwiching member 90, and is in close proximity to the first upper plate portion 81a of the first sandwiching member 80. The third upper plate portion 91c is located on the tip end side of the first sandwiching member 80, and is close to the third upper plate portion 81c of the second sandwiching member 90. The second upper plate portion 91b is located between the first upper plate portion 91a and the third upper plate portion 91c.

The first to third lower plate portions 92a, 92b, and 92c are provided so as to be spaced apart from each other in the circumferential direction of the first cylinder member 31 (the outer shape is shown by a virtual line in FIG. 6), and the first cylinder member It extends in a direction orthogonal to the outer peripheral surface of 31. The first lower plate portion 92a is located on the base end side of the second sandwiching member 90, and is in close proximity to the first lower plate portion 82a of the first sandwiching member 80. The third lower plate portion 92c is located on the tip end side of the second sandwiching member 90 and is in close proximity to the third upper plate portion 82c of the first sandwiching member 80. The second lower plate portion 92b is located between the first lower plate portion 92a and the third lower plate portion 92c.

The connecting plate portion 93 extends in the vertical direction from the first to third upper plate portions 91a, 91b, 91c to the first to third lower plate portions 92a, 92b, 92c, and the upper plate portions 91a, 91b, 91c. It is a portion connecting the lower plate portions 92a, 92b, and 92c.

A pair of support plate portions 94, 94 are provided at the tip portion of the connecting plate portion 93 at intervals in the vertical direction. The support plate portions 94 and 94 project outward in the radial direction and are substantially parallel to each other.

An insertion hole 95 into which the wedge of the cloth material 61 can be inserted is formed between the first upper plate portion 91a and the second upper plate portion 91b. Further, an insertion hole 96 into which the wedge of the cloth material 61 can be inserted is also formed between the second upper plate portion 91b and the third upper plate portion 91c.

As shown in FIG. 5, the tip surfaces of the first to third upper plate portions 91a, 91b, 91c abut on the outer peripheral surface of the first support column 11, respectively, of the first to third upper plate portions 91d, 91e, 91f. It is said that. The first to third upper contact portions 91d, 91e, and 91f are provided so as to be spaced apart from each other in the circumferential direction of the first support column 11 so as to abut on the outer peripheral surface of the first support column 11 so as to be in contact with each other. It has become. The first to third upper contact portions 91d, 91e, and 91f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first support column 11.

Further, an insertion hole 95 into which the wedge of the cloth material 61 can be inserted is also formed between the first lower plate portion 92a and the second lower plate portion 92b. Further, an insertion hole 96 into which the wedge of the cloth material 61 can be inserted is also formed between the second lower plate portion 92b and the third lower plate portion 92c. The insertion holes 95, 96 can be configured in the same manner as the insertion holes 85, 86 of the first sandwiching member 80, and all the insertion holes 85, 86, 95, 96 have the same shape and size. be able to.

As shown in FIG. 6, the tip surfaces of the first to third lower plate portions 92a, 92b, 92c abut on the outer peripheral surface of the first cylinder member 31, respectively, the first to third lower abutting portions 92d, 92e. , 92f. The first to third lower contact portions 92d, 92e, and 92f are provided at intervals in the circumferential direction of the first cylinder member 31, and are separated from each other on the outer peripheral surface of the first cylinder member 31. It is designed to come into contact. The first to third lower contact portions 92d, 92e, and 92f are arcuate surfaces extending in an arc shape along the outer peripheral surface of the first tubular member 31. When viewed from the vertical direction, the first to third lower contact portions 92d, 92e, 92f and the first to third upper contact portions 91d, 91e, 91f are arranged so as to overlap each other. The first to third upper contact portions 91d, 91e, 91f and the first to third lower contact portions 92d, 92e, 92f are composed of one plate material.

(Structure of connecting member 100)
As shown in FIGS. 3 and 4, the connecting member 100 can be made of, for example, a metal round bar, and extends in the vertical direction. The upper portion of the connecting member 100 penetrates the first upper plate portion 81a of the first sandwiching member 80 and the first upper plate portion 91a of the second sandwiching member 90. That is, although not shown, a through hole through which the upper portion of the connecting member 100 can be inserted is formed in the first upper plate portion 81a of the first sandwiching member 80 and the first upper plate portion 91a of the second sandwiching member 90. The connecting member 100 is inserted into these through holes and is prevented from coming off by caulking or the like.

Further, the lower portion of the connecting member 100 penetrates the second lower plate portion 82a of the first sandwiching member 80 and the second lower plate portion 92a of the second sandwiching member 90. Similar to the upper side, the connecting member 100 is inserted into a through hole (not shown) formed in the second lower plate portion 82a of the first sandwiching member 80 and the second lower plate portion 92a of the second sandwiching member 90. In this state, it is prevented from coming off by caulking.

With the connecting member 100 inserted through each of the through holes, the first sandwiching member 80 is rotated with respect to the second sandwiching member 90 around the center line of the connecting member 100, and the second sandwiching member 90 is seconded. 1 It is possible to rotate the connecting member 100 around the center line with respect to the holding member 80. As a result, the open state shown in FIG. 7 can be obtained.

(Structure of fastening member 110)
The fastening member 110 includes at least a fastening shaft portion 111, a nut 112, and a support shaft 113. As shown in FIG. 3 and the like, a large diameter portion 111a is formed at the base end portion of the fastening shaft portion 111. The portion of the fastening shaft portion 111 other than the large diameter portion 111a is composed of a screw rod having a thread groove continuously formed on the outer peripheral surface thereof, and may be formed of, for example, a bolt shaft portion or the like. The nut 112 is a member that is screwed into the fastening shaft portion 111. The flange portion 112a of the nut 112 comes into contact with the peripheral edge portion of the shaft portion insertion notch portion 84a in the vertical plate portion 84.

The support shaft 113 is a member for rotatably supporting the large diameter portion 111a of the fastening shaft portion 111 with respect to the tip end side of the second holding member 90. The support shaft 113 is made of a round bar member extending in the vertical direction like the connecting member 100. The upper portion of the support shaft 113 penetrates the upper support plate portion 94. That is, the upper support plate portion 94 is formed with an insertion hole (not shown) through which the upper portion of the support shaft 113 can be inserted. The upper portion of the support shaft 113 is inserted through this insertion hole, and in this insertion state, the support shaft 113 can rotate relative to the upper support plate portion 94 around the center line of the support shaft 113. It has become. The upper end of the support shaft 113 is prevented from coming off by caulking.

The lower portion of the support shaft 113 penetrates the lower support plate portion 94. That is, the lower support plate portion 94 is formed with an insertion hole (not shown) through which the lower portion of the support shaft 113 can be inserted. The lower portion of the support shaft 113 is inserted through this insertion hole, and in this insertion state, the support shaft 113 rotates relative to the lower support plate portion 94 around the center line of the support shaft 113. It is possible. The lower end of the support shaft 113 is prevented from coming off by caulking.

By rotating the fastening shaft portion 111, the fastening shaft portion 111 is inserted into the shaft portion inserting cutout portion 84a of the vertical plate member 84 as shown in FIG. The portion 111 can be switched to a state in which the vertical plate member 84 is removed from the shaft portion insertion notch portion 84a. When the nut 112 is tightened with the fastening shaft portion 111 inserted into the shaft portion insertion notch portion 84a of the vertical plate member 84, the tip end side of the first pinching member 80 and the tip end side of the second pinching member 90 approach each other. Fastened in the direction.

(Composition of cloth material)
As shown in FIG. 1, the support work 1 includes the first to fifth cloth materials 61 to 65 as a plurality of cloth materials. The first to fifth cloth materials 61 to 65 are the same, and each extends in the horizontal direction, and wedges protruding downward are provided at both ends.

The first cloth material 61 connects the first support column 11 and the second support column 12 via the first clamp member 71 and the second clamp member 72. Specifically, one wedge of the first cloth material 61 is inserted into the insertion holes 85, 95 (or the insertion holes 86, 96) of the first clamp member 71, and the other wedge is the insertion hole of the second clamp member 72. It is inserted into the insertion hole (not shown). Hereinafter, in the same manner, the second cloth material 62 connects the second support column 12 and the third support column 13 via the second clamp member 72 and the third clamp member 73. The third cloth material 63 connects the third support column 13 and the fourth support column 14 via the third clamp member 73 and the fourth clamp member 74. The fourth cloth material 64 connects the first support column 11 and the fourth support column 14 via the first clamp member 71 and the fourth clamp member 74. Further, the fifth cloth material 65 connects the adjacent columns 11 to 18 with each other via the fifth clamp member 75 arranged in the intermediate portion of the columns 11 to 18.

The horizontal dimensions of the first to fifth cloth materials 61 to 65 are set to lengths corresponding to the intervals between the adjacent columns 11 to 14 and 15 to 18. The intervals between the adjacent columns 11 to 14 and 15 to 18 are set to be predetermined intervals according to the horizontal lengths of the first to fifth cloth materials 61 to 65.

(Construction of support work 1)
Next, a case of constructing the support work 1 configured as described above will be described. As described above, the materials constituting one support work 1 include the first to eighth columns 11 to 18, the lower end connecting tool 30, the upper end connecting tool 40, and the first to fifth clamp members 71 to 75. The first to fifth cloth materials 61 to 65 and the jack 50.

As shown in FIG. 2, the jack 50 is installed on the H-shaped steel 300, and the lower end connecting tool 30 is fixed on the jack 50. After that, as shown in FIG. 8, the first support column 11 is connected to the first cylinder member 31 of the lower end connecting tool 30. At this time, the lower end of the first column 11 is abutted against the upper end of the first cylinder member 31, but as shown in FIG. 9, the axis C of the first column 11 and the axis B of the first cylinder member 31 May be displaced in the radial direction. When the axis B and the axis C are displaced in the radial direction, the contact area between the lower end of the first support column 11 and the upper end of the first cylinder member 31 becomes smaller, and when a large vertical load is applied, the first The lower end of the support column 11 and the upper end of the first cylinder member 31 may be deformed.

In the present embodiment, as shown in FIG. 10, the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 are clamped from the outside in the radial direction by the first clamp member 71. When clamping, first, the first clamp member 71 is opened as shown in FIG. 7. Then, the first holding member 80 and the second holding member 90 are sandwiched in the radial direction between the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 by the first holding member 80 and the second holding member 90. Is relatively rotated. Next, the fastening shaft portion 111 is inserted into the shaft portion insertion notch portion 84a of the vertical plate member 84, and then the nut 112 is tightened.

By clamping the lower end of the first column 11 and the upper end of the first cylinder member 31 from the outside in the radial direction, the axis C of the first column 11 and the axis B of the first cylinder member 31 are aligned with each other. Can be done. As a result, the lower end portion of the first support column 11 and the upper end portion of the first cylinder member 31 are aligned with each other, and the end faces of both are aligned with each other, so that even if a large load is applied, the end faces can be sufficiently withstood. Further, the work is simple because it is only clamped by the first clamp member 71.

As shown in FIG. 11, since the second to fourth columns 12 to 14 can be connected to the second to fourth cylinder members 32 to 34 by the second to fourth clamp members 72 to 74, the first column 11 As in the case of connection, alignment can be easily performed.

After that, as shown in FIG. 12, the first to fourth columns 11 to 14 are connected by the first to fourth cloth materials 61 to 64. Further, as shown in FIG. 13, the fifth clamp member 75 is attached above the first to fourth clamp members 71 to 74.

After that, the four fifth clamp members 75 are connected by the fifth cloth material 65. Further, as shown in FIG. 1, the fifth clamp member 75 can be further attached to each of the columns 11 to 14, and similarly connected by the fifth cloth material 65.

Further, when connecting the first to fourth columns 11 to 14 and the fifth to eighth columns 15 to 18, they can be connected by the fifth clamp member 75 in the same manner as the first to fourth clamp members 71 to 74. .. Further, the upper end portions of the fifth to eighth columns 15 to 18 can be connected to each other by the upper end portion connecting tool 40.

The support work 1 can be constructed as described above. Support work 1 can be basically constructed by attaching the first to fifth clamp members 71 to 75 and attaching the first to fifth cloth materials 61 to 65, and welding is not required, so that it is in the field. Can be easily constructed and disassembled. Since the columns 11 to 18 are not connected in the state where the support 1 is disassembled, the columns 11 to 18 can be easily separated.

(Action and effect of the embodiment)
As described above, according to this embodiment, the lower end portions of the columns 11 to 14 are in a state where the lower end portions of the columns 11 to 14 are abutted against the upper end portions of the tubular members 31 to 34 of the lower end connector 30. And the upper end portions of the tubular members 31 to 34 are clamped from the outside in the radial direction by the clamping members 71 to 74. At this time, since the lower end of the columns 11 to 14 and the upper end of the tubular members 31 to 34 have substantially the same diameter, the lower end of the columns 11 to 14 and the upper end of the tubular members 31 to 34 are aligned. The end faces match each other. As a result, the support work 1 that can sufficiently withstand a large load is constructed. Further, by connecting the plurality of columns 11 to 14 with the lower end connecting tool 30, the relative positional relationship between the columns 11 to 14 can be appropriately maintained. Therefore, it becomes possible to support the structure 200 in a stable state.

On the other hand, when the clamp members 71 to 74 are removed, the columns 11 to 14 can be separated from the lower end connecting tool 30. As a result, the support work 1 can be easily disassembled into units of one support. Since it is possible to carry the support manually with only one support, for example, a worker can manually carry the support to an underground pit or a closed room. Further, by changing the number of columns 11 to 18 to be combined, it becomes possible to easily set the allowable load of the support work 1 for each site. Furthermore, it also becomes possible to freely arrange the standoff 1 to 18 in accordance with the shape of the structure 200 to support.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Further, all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

As described above, the support work according to the present invention can be used, for example, when supporting a structure at various construction sites, construction sites, and the like.

1 Supporting work 11-14 First to fourth columns 30 Lower end fittings 31 to 34 First to fourth cylinder members 71 to 74 First to fourth clamp members 81a, 81b, 81c First to third upper plate parts 81d, 81e, 81f 1st to 3rd upper contact portions 82a, 82b, 82c 1st to 3rd lower plate portions 82d, 82e, 82f 1st to 3rd lower contact portions 83 Connecting plate portion

Claims (7)

In a support work that supports a structure from below by providing a plurality of columns extending in the vertical direction and arranged at intervals in the horizontal direction and a connecting tool for connecting the lower ends of the columns.
The connector has a substrate and a plurality of tubular members fixed to the substrate and projecting upward to have a diameter substantially the same as the diameter of the lower end portion of the column.
The lower end of each of the columns is abutted against the upper end of each of the tubular members.
A support work comprising a plurality of clamp members for clamping the lower end portion of the support column and the upper end portion of the cylinder member from the radial outside of the support column and the cylinder member. In the support work according to claim 1,
The stanchions include a first stanchion and a second stanchion that are arranged horizontally spaced apart from each other.
The tubular member includes a first tubular member to which the lower end of the first strut is abutted and a second tubular member to which the lower end of the second strut is abutted.
The clamp member clamps a first clamp member that clamps a lower end portion of the first strut and an upper end portion of the first cylinder member, and a lower end portion of the second strut and an upper end portion of the second cylinder member. Including the second clamp member
A support work characterized in that one end of a cloth material is connected to the first clamp member, and the other end of the cloth material is connected to the second clamp member. In the support work according to claim 1 or 2,
The clamp member is provided with an upper contact portion that abuts on the outer peripheral surface of the column and a lower contact portion that abuts on the outer peripheral surface of the tubular member. In the support work described in claim 3,
A plurality of the upper contact portions are provided at intervals in the circumferential direction of the support column.
A support work characterized in that a plurality of lower contact portions are provided at intervals in the circumferential direction of the tubular member. In the support work according to claim 3 or 4,
The upper contact portion extends in an arc shape along the outer peripheral surface of the support column.
The lower contact portion is a support work characterized in that it extends in an arc shape along the outer peripheral surface of the tubular member. In the support work according to any one of claims 3 to 5,
A support work characterized in that the upper contact portion and the lower contact portion are made of one plate material. In the support work according to claim 6,
The plate material includes an upper plate portion extending in a direction orthogonal to the outer peripheral surface of the column, a lower plate portion extending in a direction orthogonal to the outer peripheral surface of the tubular member, and a lower plate portion from the upper plate portion. Equipped with a connecting plate that extends to
The upper contact portion is provided on the upper plate portion, and the upper contact portion is provided.
A support work characterized in that the lower contact portion is provided on the lower plate portion.

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