JPH09195377A - Joint tool and structure of joint part of concrete article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve the facilitation and efficiency of joint work by forming two bolt holes in a planar main body having an adjusting hole spread upward with a wider bottom width than the bolt diameter, and utilizing them to joint of concrete articles. SOLUTION: Disposed at least on one side is an adjusting hole 6 spread upward having a wider bottom width than the diameter of a bolt 5, and a bolt 5 is screwed therein. In addition, an adjusting member 3 is fitted in the adjusting hole 6 by piercing the bolt 5 and then clamping the bolt 5 in the adjusting member 3 having an outer shape to be fitted in the adjusting hole 6 and a bolt hole 3a In the vertical direction. When the concrete article C gradually moves to the regular position, the adjusting member 3 fits completely In the adjusting hole 6 so as to allow the concrete article C to move to the regular position. In this instance, if a packing P is used in its joint part, then the packing P is pressed and brought in close contact therewith at the same time of position alignment. In this manner, the bolt 5 is clasped step by step to conduct position alignment, so that great stresses and damages can be avoided from occurring in the joint part.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a gutter block,
The present invention relates to a joint device for jointing articles such as manhole blocks and the structure of the joint portion of these concrete products.

[0002]

2. Description of the Related Art The most common joint part of a conventional concrete product is a joint 2 as shown in FIG.
The insert 4 is embedded in the concrete surface near the joint part of each concrete product, the joint plate 50 having the bolt holes 51 formed at predetermined intervals is bridged over the joint part, and both inserts are penetrated through the bolt hole. The bolt is screwed on.

Further, as shown in Design Registration No. 661280 and FIG. 16, after connecting with a bolt using a special joint device 60, the joint metal fitting is tapped downward (in the arrow direction) with a hammer or the like. There is also a structure in which concrete products are brought into close contact with each other (packing P is compressed) to perform alignment.

[0004]

When a concrete product is jointed by a conventional ordinary joint device, as shown in FIG. 15, the concrete products C to be jointed are completely aligned and the position of the insert 4 is adjusted. Since the positions of the bolt holes 51 of the joint device 50 must be perfectly matched, the joint work is very complicated and the work efficiency is poor. Further, when using packing such as rubber for the joint surface of the concrete product, it has been necessary to press the joint surface by some means to shrink and deform the packing so that the packing comes into close contact.

Further, when the special joint device 60 as shown in the design registration No. 661280 is used, the workability is very good, and even when the packing P is used, the packing can be pressed and brought into close contact at the same time as the positioning. Although it is possible, since the concrete product is suddenly aligned by hitting it with a hammer or the like, there is a possibility that a large stress acts on the joint portion and the portion is damaged. Further, due to an earthquake, ground subsidence, or the like, the joint may be loosened when a force is applied to the concrete product in a direction of compressing the packing.

[0006]

DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned problems, and firstly, two holes for bolting are formed at predetermined intervals, and at least the holes are formed. One is a plate-shaped main body, one of which is a tapered adjustment hole that widens upward and the width of the bottom of which is wider than the bolt diameter, and an external shape that fits into the adjustment hole, and a bolt hole is formed in the vertical direction. And a second adjusting member, the second one being a joint device by bridging the joint device over the joint parts of two concrete products having a joint part in which an insert is embedded and connecting the bolts by bolts. In the structure of the joint part of the concrete product, the insert is embedded in the bottom of the recessed part of the taper that expands upwards, and the joint device is duplicated at a predetermined interval. A plate-shaped main body having an adjusting hole having substantially the same diameter as the upper part of the individually formed depression and a tapered hole formed by the depression and the adjustment hole of the joint device, and a bolt hole near the center The structure of a concrete product joint part, wherein a bolt is screwed into the insert from a bolt hole of the adjustment member to perform a joint, and the third is a rear surface of the plate-shaped body. The joint device is characterized in that it has tapered projections at predetermined intervals, and bolt holes penetrating the front and back are formed in the projections.

In the first aspect of the invention, as shown in FIGS. 1 and 2, at least one of the joint devices 1 is formed with an adjusting hole 6 having a bottom width wider than the bolt diameter and expanding upward. Therefore, the bolt 5 can be screwed even if the concrete product C to be jointed is not perfectly aligned. Then, the adjusting member 3 is gradually inserted into the adjusting hole 6 by penetrating the adjusting member 3 having an outer shape that fits in the adjusting hole 6 and having the bolt hole 3a formed in the vertical direction, and tightening the bolt. As they are fitted, the concrete product C gradually moves to the regular position. When the adjusting member is completely fitted in the adjusting hole, the concrete product is completely moved to the normal position. When the packing P is used for the joint portion, the packing P is pressed and brought into close contact at the same time as the positioning.

In the present invention, since the positioning is gradually performed according to the tightening of the bolts, a large stress is not generated in the joint portion, and there is no possibility of damaging the portion.

The material of the joint device is preferably plastic or metal, but plastic is cheaper and easier to manufacture.

The second invention is, as shown in FIGS.
In addition to providing an adjustment hole in the joint device 20, a tapered recess 24 is provided in the concrete product body, and the insert 4 is embedded in the bottom of the recess 24. As a result, similarly to the first aspect of the present invention, by tightening the bolt penetrating the adjusting member 23, the concrete product moves to the regular position as the adjusting member 23 fits into the depression 24. In the present invention, the main body 21 can be made relatively thin, and the adjustment distance of the coupled members can be increased.

As shown in FIGS. 12 to 14, the third invention is a joint device 40 in which the main body of the joint device used in the second invention and the adjusting member are integrated. The concrete product C to be jointed is also provided with a tapered recess 44, and the insert 4 is embedded in the bottom of the recess. By tightening the bolts using the joint device 40, the concrete product C moves to the regular position as the convex portion 42 fits into the recessed portion 44.
Further, since the main body and the convex portion are integrated, the number of parts is small and it is easy to handle.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings of the embodiments. 1 and 2 are cross-sectional views of the joint device 1 of the embodiment, and FIG. 3 is a cross-sectional view showing another example of the adjusting hole and the adjusting member.

The joint device 1 comprises a plate-shaped main body 2 and an adjusting member 3. As shown in FIG. 1, two adjustment holes 6 are formed in the main body 2 at predetermined intervals. The adjusting hole 6 has a mortar shape that widens upward. The adjustment hole has a circular shape when viewed from above, and the diameter of its bottom portion is larger than the diameter of the bolt 5. The adjusting member 3 has a shape in which the outer diameter fits into the adjusting hole, that is, a mortar shape, and a bolt hole 3a is formed in the center in the vertical direction. A joint is performed by penetrating the adjusting member 3 through the bolt 5 and screwing it into the insert 4.

FIG. 1 shows a state before the left bolt is tightened, and the two concrete products C are not in close contact with each other. As the bolt is tightened, the adjusting member 3 is fitted into the adjusting hole 6, and the concrete product C on the left side moves to the right side and presses the packing P. As shown in FIG. 2, when the adjusting member 3 is completely fitted into the adjusting hole 6,
The packing P is completely pressed and the concrete product adheres. The predetermined distance between the adjusting holes 6 in the main body 2 is the distance between the inserts 4 at this time.

The tapered surface of the adjusting hole does not necessarily have to be a smooth surface. For example, like the adjusting hole 8 shown in FIG.
It may be formed in a wedge shape. In this case, the outer peripheral surface of the adjusting member 7 is also formed in a wedge shape in conformity with this.
By doing so, the adjusting member 7 once becomes the adjusting hole 8
Does not loosen when mated with.

FIG. 4 shows a case where the joint device 1 is used for the joint of the manhole block 9. Shown on the left side is a state in which the blocks are overlapped, and the position of the insert 4 is not aligned. Shown in the center is the state before the joint device 1 is attached and the bolts are tightened.
Shown on the right is the fully tightened bolt.
Alignment is completely performed, and when packing is used, the packing is pressed and adheres closely.

FIG. 5 is a sectional view of the joint device 10 of the embodiment, and FIG. 6 is a top view of the joint device 10. The joint device 10 includes a plate-shaped main body 11 and an adjusting member 12. As shown in FIG. 5, the main body 11 is formed with a hole 13 for inserting a bolt and an adjusting hole 14 at a predetermined interval. Although the adjusting hole 14 has a shape that widens upward, the difference from the adjusting hole 6 is that
As shown in FIG. 6, the shape seen from above is a square, and
The point is that the tapered surface is provided only in one direction as shown in FIG. Providing the tapered surface only in one direction in this way is particularly when it is desired to move the concrete product largely in one direction. When the bolt 5 is tightened from the state of FIG. 5, the concrete product on the left moves to the right (or the concrete product on the right moves to the left), and the gap between the concrete products comes into close contact.

FIG. 7 shows a case where the joint device 10 is used for the joint of the gutter block 16. Shown above are the blocks placed side-by-side with the blocks not in close contact. Below is the joint device 1
With the 0s attached and the bolts tightened, the blocks are in complete contact and aligned.

FIG. 8 is a sectional view showing the structure of the concrete product joint portion of the embodiment of the present invention, and FIG. 9 is a top view of the main body 21 of the joint device 20. In the vicinity of the joint portion of the concrete product C, a recessed portion 24 having a taper that widens upward is formed. The insert 4 is embedded in the bottom portion thereof. Joint fixture 20
Is composed of a plate-shaped main body 21 and an adjusting member 23. A main body 21 having two adjusting holes 22 is bridged between the recessed portions 24 of the two connected concrete products. Adjustment hole 2
2 has a diameter substantially equal to that of the upper portion of the depressed portion 24. The adjusting member 23 penetrates through the bolt 5 when screwed into the insert 4. The adjustment member 23 includes the recess 24 and the adjustment hole 22.
It has an outer shape that matches the shape of the hole formed by, and a bolt hole 23a penetrates through the center. In FIG. 8, the bolt 5 on the right side has already been tightened, and the left side is before tightening. When the bolt on the left side is tightened from this state, the adjusting member 23 and the adjusting hole 22 of the main body 21 fit together, and the concrete product on the left side moves to the right side. When the bolt is completely tightened, the adjustment member is completely depressed and the adjustment hole 22
It fits into the hole formed by and the concrete product adheres closely. In the case of the present embodiment, the upper surfaces of the adjustment hole 22 and the adjustment member 23 are circular, but it is common to the present invention that the shapes are not necessarily circular.

FIG. 10 is a sectional view showing the structure of the concrete product joint portion of the embodiment of the present invention, and FIG. 11 is a perspective view of the adjusting member 33 of the joint device 30 used therein. The present embodiment differs from the structure shown in FIG. 8 in that the bolt hole 33a of the adjusting member 33 is an oval loose hole. As a result, it is possible to cope with a larger positional deviation of the concrete product, and the adjustment amount is increased.

12 and 13 show a joint device 40.
And FIG. 14 is a perspective view. Joint fixture 40
Is the one in which the main body 31 and the adjusting member 33 are integrated. Two tapered protrusions 42 are formed on the back surface of the main body 41 at a predetermined interval. Bolt holes 43 penetrating the front and back are formed in the convex portion 42. Bolt hole 4
Since 3 is an oval-shaped loose hole, the adjustment amount is large, but it does not necessarily have to be a loose hole. FIG.
In the state 2 before tightening the bolt, when the tightening of the bolt is completed, the convex portion 42 fits into the recess 44 of the concrete product as shown in FIG. 13, and the concrete product C,
C is in close contact. Since the joint device 40 has a structure in which the main body and the adjusting member are integrated, the number of parts is small,
It is easy to handle and can perform joint work efficiently.

Although the joint device according to the present invention is extremely convenient for use in jointing concrete products. Of course, it can also be used to join parts of other articles.

The number of adjusting holes, adjusting members, and convex portions in the present invention is not necessarily two (1 pair), and may be 4 or more (2 or more pairs). For example, in the joint device of FIG. 14, it is possible to arrange two such joint devices vertically and integrate them, and provide four convex portions. In this case, it goes without saying that two recesses are provided at each joint of the concrete product.

[0024]

INDUSTRIAL APPLICABILITY In the present invention, the positioning of the concrete product can be performed simultaneously with the joint of the concrete product. When packing is used for the joint part, the packing can be pressed and brought into close contact at the same time. Further, in the present invention, since the positioning is gradually performed according to the tightening of the bolt, a large stress is not generated in the joint portion and there is no possibility of damaging the portion.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a joint device 1 (before tightening).

FIG. 2 is a cross-sectional view of the joint device 1 (after tightening).

FIG. 3 is a cross-sectional view showing another example of the adjusting hole and the adjusting member.

FIG. 4 is an explanatory diagram of a usage example of the joint device 1.

FIG. 5 is a cross-sectional view of the joint device 10.

6 is a top view of the joint device 10. FIG.

7 is an explanatory diagram of a usage example of the joint device 10. FIG.

FIG. 8 is a cross-sectional view showing the structure of the concrete product joint portion of the example.

9 is a top view of the main body 21 of the joint device 20. FIG.

FIG. 10 is a cross-sectional view showing the structure of the concrete product joint portion of the example.

11 is a perspective view of an adjusting member 33. FIG.

FIG. 12 is a cross-sectional view of a joint device 40 (before tightening).

FIG. 13 is a cross-sectional view of the joint device 40 (after tightening).

14 is a perspective view of a joint device 40. FIG.

FIG. 15 is a cross-sectional view showing a structure of a conventional concrete product joint portion.

FIG. 16 is an explanatory diagram of a conventional joint device 60.

[Explanation of symbols]

 C Concrete product P Packing 1 Joint device 2 Main body 3 Adjusting member 3a Bolt hole 4 Insert 5 Bolt 6 Adjusting hole 7 Adjusting member 8 Adjusting hole 10 Joint device 11 Main body 12 Adjusting member 12a Bolt hole 13 Hole 14 Adjusting hole 15 Washer 16 Gutter block 20 Joint Device 21 Body 22 Adjusting Hole 23 Adjusting Member 23a Bolt Hole 24 Cave 25 Washer 30 Joint Device 31 Body 32 Adjusting Hole 33 Adjusting Member 33a Bolt Hole 34 Cave 35 Washer 40 Joint Device 41 Body 42 Convex 43 Bolt Hole 44 Recessed part 45 Washer 50 Joint device 51 Bolt hole 60 Joint device

Claims (5)

[Claims] 1. A pair of holes are formed at predetermined intervals for bolt connection, and at least one of the holes is a tapered adjustment hole that widens upward, and the width of its bottom is wider than the bolt diameter. A joint device comprising a plate-shaped main body formed and an adjusting member having an outer shape that fits in the adjusting hole and having bolt holes formed in the vertical direction. 2. The structure of a joint part of a concrete product, wherein a joint device is bridged over the joint parts of two concrete products having a joint part in which an insert is embedded, and the joint is carried out by bolt connection.
A plate-shaped main body having an insert hole embedded in the bottom of a tapered recess that spreads upward, and a plurality of joint devices formed at a predetermined interval and having an adjustment hole of approximately the same diameter as the upper part of the recess. And an adjusting member fitted in a tapered hole formed by the recess and the adjusting hole of the joint device and having a bolt hole penetrating in the vicinity of the center, and the bolt is screwed into the insert from the bolt hole of the adjusting member. Concrete product joint structure characterized by being joined together 3. The structure of the concrete product joint portion according to claim 2, wherein the bolt hole of the adjusting member is an oval loose hole. 4. A joint device characterized in that the plate-like main body has tapered projections at predetermined intervals on a back surface thereof, and the projections are formed with bolt holes penetrating through the front and back surfaces thereof. 5. The joint device according to claim 4, wherein the bolt holes are oval-shaped loose holes.