JPH09183069A - Block fastening tool, and interblock connecting method with bolt nut - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable bolts and nuts to be easily fastened together in joining blocks together at a site where operability is very bad, as when embedding the blocks along an existing structure such as a fence or a building. SOLUTION: This block fastening tool is used in joining blocks 11, 11' made of concrete or the like to each other on their end faces, passing bolts through flanged parts 13, 13' provided on the sides of the blocks 11, 11', and fastening the bolt ends projected from the flanged part 13' to nuts. A lever 3 is freely rotatably connected to a ratchet main body 2, and the block fastening tool comprises a fastening tool 1, designed to be capable of fastening as the ratchet main body 2 is rotated in a certain direction by pushing and pulling the lever 3 along its longitudinal direction, and an interlocked rotation preventing tool 10 which, when either the nut or bolt is rotated by the fastening tool 1, prevents the other bolt or nut from rotating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block tightening tool used for tightening bolts and nuts, which is used when connecting blocks for waterways formed of concrete or the like, and more specifically to a fence, Blocks that can be easily tightened with bolts and nuts when connecting and connecting blocks in places where workability is extremely poor, such as when burying blocks along existing structures such as buildings Connection method between blocks with tightening tools and bolts and nuts.

[0002]

2. Description of the Related Art Conventionally, when a plurality of blocks are connected to each other, adjacent blocks are connected to each other with bolts and nuts. To tighten the bolts and nuts manually, the side surfaces of the blocks are generally used. The bolt is inserted into the bolt insertion hole provided on the side, the head of the bolt is pressed with one hand, the nut is screwed from the other block side, and tightened with the tightening tool. Such tightening tools are
A so-called ratchet spanner, in which the lever body is fixed at a substantially right angle to the rotation axis of the ratchet body, is used.The lever body is grasped by the other hand, and the lever body is formed so as to draw an arc around the rotation axis of the ratchet body. By reciprocating, the ratchet body rotates in a fixed direction and the nut is tightened.

[0003]

However, when the place where the connecting work is performed is wide, there is no problem even if the conventional tightening tool is used. For example, the block is buried in the ground along the structure such as a fence or a building. In some cases, for example, when the gap between the block connecting portion and the structure is narrow, the following problems occur.

That is, when the blocks are installed in parallel with the structure and with a small separation distance, and when connecting the blocks in the clearance with a small separation distance, the worker must crawl on the ground. Bend, and you have to put one hand in the gap between the structure and the side of the block to hold the head of the bolt and reciprocate the ratchet spanner with the other hand, which makes it difficult to work because the posture is not adjusted. It is extremely complicated. Further, when the ratchet spanner does not enter the gap, there is a serious problem that the blocks cannot be integrated because the connecting work cannot be performed.

The present invention has been made in view of the above-mentioned conventional problems, and a tightening tool for a block and a bolt nut capable of easily tightening a bolt and a nut for connecting the blocks from above the block. It is an object to provide a method of connecting between blocks.

[0006]

The present invention has been made to solve such a problem, and a means for solving the problem is a block tightening tool, which is a block 11 made of concrete or the like. , 11 'are joined together at their end faces, and when bolts are inserted through the flange portions 13, 13' provided on the side surfaces of the blocks 11, 11 'and the nuts are tightened at the tips of the bolts protruding from the flange portions 13'. A block tightening tool used for a ratchet body 2, wherein a lever body 3 is rotatably connected to the ratchet body 2, and the ratchet body 2 is rotated in a fixed direction by pushing and pulling the lever body 3 in its longitudinal direction. And a tightening tool 1 configured to be tightened, and when one of the nut and the bolt is rotated by the tightening tool 1, rotation of the other bolt or nut is prevented. It is composed of a rotation prevention tool 10. In this way, the tightening tool 1 is provided with the lever body 3 rotatably provided on the ratchet body 2, and the lever body 3 is rotatable.
Ratchet body 2 by pushing and pulling in the longitudinal direction
Is configured so that it can rotate in a certain direction and can be tightened, so that the flange portion 13 is provided on the side surface side of the block 11.
When tightening the bolt to be inserted into the nut with the nut, the ratchet body 2 is fitted into the nut and the lever body 3 is pushed and pulled in the vertical direction to tighten the nut. Therefore, even when the gap between the structure and the block is narrow as in the conventional example, if the lever body 3 is positioned so as to project to the upper surface side of the block, the nut tightening work can be easily performed in the gap. On the other hand, the rotation of the bolt that occurs when the nut is tightened is prevented by the rotation prevention device 10, so that the bolt does not idle.

Further, the second means is the above-mentioned non-rotation preventing tool 1.
0 is a fitting hole 12a that can be fitted to the head of the bolt or the nut
It is composed of a receiving member 12 provided with and a standing piece 14 continuous with the receiving member 12. According to such a rotation prevention tool 10, since the upright piece 14 is provided on the receiving member 12 that blocks rotation of the bolt,
The standing piece 14 projects above the block with the head of the bolt fitted to the receiving member 12, and the receiving member 12 is supported by gripping the standing piece 14. Therefore, unlike the conventional example, it is not necessary to put a hand in the gap between the structure and the block to press the head of the bolt, and if the upright piece 14 is supported from above the block with a hand, the rotation of the bolt can be prevented. .

The third means is that the standing piece 14 is provided with a fixing piece 15 having a flat surface portion 15a capable of abutting at least the upper surface of the block so as to fix the receiving member 12 to the block 11. is there. If the fixing piece 15 is provided, the anti-rotation device 10 is fixed to the block without holding the standing piece 14 with a hand or the like.

Further, the fourth means is a method of connecting the blocks with bolts and nuts, in which the blocks 11 and 11 'made of concrete or the like are joined at their end faces and provided on the side faces of the blocks 11 and 11'. Flange part 13,
The bolt 11 is inserted into the block 13 ', the fitting hole 12a provided in the receiving member 12 of the anti-rotation device 10 is fitted into the head of the bolt 13 to fix the bolt, and the block 11' to be joined and connected is also provided. Of the bolt protruding from the flange 13 ′ of the bolt, the nut is fitted to the nut, the ratchet body 2 is fitted to the nut, and the lever body 3 rotatably connected to the ratchet body 2 is attached to the upper surface of the block 11 ′. By projecting the lever body 3 and pushing and pulling the lever body 3 in the vertical direction, the nut is tightened to connect the adjacent blocks 11 and 11 '. With such a connecting method, the bolts and nuts can be tightened from the upper surface side of the block, so that the work efficiency when working in a narrow space becomes extremely good.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a block tightening tool according to the present invention will be described below mainly with reference to FIG.
The description will be made while inserting necessary drawings as needed. Reference numeral 1 denotes a tightening tool in which a rod-shaped lever body 3 is rotatably connected to a ratchet body 2, and 10 denotes a rotation tool for preventing rotation of a bolt when a nut is tightened by the tightening tool 1. Indicates a preventive device. The tightening tool 1 and the rotation prevention tool 10
The tightening tool is composed of and.

More specifically, as shown in FIG. 2, the ratchet body 2 of the tightening tool 1 has a socket 5 having an inner peripheral wall formed with concavities and convexities that can be fitted into the outer shapes of nuts or bolts. In addition, a ratchet (reverse rotation prevention) mechanism is provided between the socket 5 and the bearing portion 6, and the rotation of the bearing portion 6 causes the socket 5 to intermittently rotate in a certain direction so that a nut or a bolt Allows tightening.

Further, the ratchet body 2 has a strip-shaped projection 7 substantially perpendicular to the rotation axis Y of the ratchet body 2.
Is protruding. On the other hand, a substantially U-shaped fitting portion 8 is formed on one end side 3a of the lever body 3, and a handle 3c is fixed to the other end side 3b at a substantially right angle. By fitting the fitting portion 8 of the lever body 3 into the projection 7 of the ratchet body 2 and pivotally supporting it through the pin 9, the lever body 3 becomes rotatable with respect to the projection 7. .

In the tightening tool 1 having the above structure, the ratchet body 2 is rotated by gripping the handle 3c of the lever body 3 with the socket 5 fitted in the heads of the nuts and bolts and pushing and pulling in the longitudinal direction. To do.

Further, as shown in FIG. 3, the anti-rotation device 10 has a concave portion 1 provided on the side surface of the block 11.
The receiving member portion 12 is provided with a fitting hole 12a that can be inserted into and removed from the la 1a, and that has recesses and projections formed in the inner peripheral wall so that it can be fitted to the head of the bolt or the nut, and is fixed to the receiving material portion 12. Side view substantially L fixed to the upper end of the standing piece 14 so as to have a strip-shaped standing piece 14 and a flat portion 15a substantially perpendicular to the standing piece 14 and a rising portion 15b that is substantially flush with the side surface of the block 11. It is composed of a letter-shaped fixing piece 15. Furthermore, the fixing piece 15
The rising portion 15b has a long hole 16 that is large enough to receive a finger.

When the fastening tool 1 tightens the head of the nut or bolt, the anti-rotation tool 10 having the above-described structure is used to prevent the other side of the turning operation. That is, the fitting hole 12a of the receiving member 12 is fitted into the head or nut of the bolt, and the flat surface portion 15a of the fixing piece 15 is brought into contact with the upper surface side of the block 11 to prevent the bolt and nut from rotating around. Further, the anti-rotation device 10 is fixed to prevent it from falling.

Next, as one embodiment of a method of connecting blocks by bolts and nuts according to the present invention, a case of embedding blocks on the ground along a structure such as a fence will be described. As shown in FIG. 1, the recesses 11a and 11a ′ provided on the side surfaces of both blocks 11 and 11 ′ and the joint surface 1 are formed.
Flange portions 13 and 1 formed between 1b and 11b '
3'is formed with a bolt insertion hole, and the bolt 17 is inserted from the recessed portion 11a of the one block 11 and the tip of the bolt 17 protruding from the side surface inside the recessed portion 11a 'of the other block 11'. Fit the nut on the screw part.

Then, the receiving material portion 12 of the anti-rotation device 10 is fitted in the concave portion 11a of the block 11, the head of the bolt 17 is fitted in the fitting hole 12a, and the inside of the concave portion 11a 'of the block 11' is fitted. At the nut 1
When the socket 5 is fitted, as shown in FIG. 4 (a), the tightening tool 1 causes the lever body 3 to move in the gap W between the side surface 11d ′ of the block 11 ′ embedded in the ground 18 and the structure 19. The block 11 'is positioned so as to project upward from the upper surface 11c'. On the other hand, the detouring prevention tool
As shown in FIG. 7B, the fitting hole 12a provided in the receiving member 12 holds the head of the bolt 17 in the recess 11a, and the side surface 11d of the block 11 and the structure 19 are separated from each other. The standing piece 14 is interposed in W, and the flat surface portion 15a of the fixed piece 15 is in contact with the upper surface 11c of the block 11.

When the handle 3c of the tightening tool 1 is gripped in this state and the lever body 3 is pushed and pulled in the longitudinal (vertical) direction X as shown in FIG. 5, the connecting portion between the lever body 3 and the projection 7 is formed. Causes the bearing part 6 to stop and draws an arc, and the bearing part 6 rotates due to the movement, so that the socket 5 rotates in a certain direction and the nut is tightened, while the bolt idles by the anti-rotation device 10 on the other hand. Because there is no such thing
In the state shown in FIG. 6, the tightening work can be performed smoothly and reliably. Therefore, it is possible to connect the blocks to each other without putting a hand into the gap between the block and the structure as in the conventional case and to improve the work efficiency.

In the above embodiment, the ratchet body 2 and the lever body 3 are rotatably connected via the protrusion 7 of the ratchet body 2, but the lever body 3 is not necessarily connected via the protrusion 7. Need not be connected. For example, the entire ratchet body 2 may be formed into a substantially oval shape, and the lever body 3 may be rotatably connected to one pointed end thereof. The point is that the lever body 3 may be rotatably connected to the ratchet body 2 at a position other than the extension of the rotation axis Y of the ratchet body 2. That is, in the case of the conventional ratchet spanner, the lever body is directly connected to the bearing portion, so the lever body cannot be pushed or pulled in the longitudinal direction, but the lever body 3 is rotated to a position other than the extension line of the rotation axis Y. This is because if they are movably connected, the ratchet body 2 rotates by pushing and pulling the lever body 3.

Further, in the above embodiment, the receiving member 12 of the anti-rotation device 10 is provided with the upright piece 14 and the fixed piece 15, but the shape thereof is not limited to that shown in the above embodiment, and the upright piece. Any shape may be used as long as it can support the receiving member 12 from the upper side of the block by 14 and can prevent the anti-rotation device 10 from falling by the fixing piece 15.

Further, in the above embodiment, the block 1
The flange portions 13 and 13 ′ of 1 and 11 ′ were formed between the joint surfaces 11b and 11b ′ by providing the concave portions 11a and 11a ′ on the side surface side thereof, but the flange portions are not necessarily the same. The configuration is not limited to the above, and the flange may be formed by providing the flange-shaped projection on the side surface side of the block.

Further, even when the concave portion is provided on the side surface of the block, the height of the concave portions 11a and 11a 'is not limited, and may be provided at the middle position as shown in FIG.
Further, as shown in FIG. 7B, it may be provided on the lower side of the side surface. In this case, the fastener 1 depending on the recessed position
Any position can be dealt with by adjusting the lever body 3 and the standing piece 14 of the anti-rotation device 10 to the required length.

[0023]

As described above, according to the method for connecting the blocks with the block tightening tool and the bolt nut according to the present invention, the ratchet main body is formed by the tightening tool pushing and pulling the lever body in the longitudinal (up and down) direction. Since it is configured so that it can be rotated in a fixed direction and is also provided with a non-rotating device, the anti-rotating device is fitted to the head of the bolt, and the ratchet body of the tightening device is attached. If the lever body is positioned on the upper surface side of the block by fitting it into the nut, the nut can be tightened simply by moving the lever body up and down on the upper surface side of the block. Therefore, unlike the conventional example, it is not necessary to bend down to the ground and put a hand in the gap between the structure and the block, and the bolts and nuts can be easily tightened, so that the efficiency of the block connecting work can be improved. At the same time, since the tightening work can be performed even in a narrow gap that cannot be connected in the related art, it has an extraordinary effect that the installation location of the block is not restricted.

Further, by providing the upright piece on the receiving member of the anti-rotation device, the upright piece can be supported by holding the upright piece. Therefore, the receiving member can be supported in the gap between the structure and the block as in the conventional example. There is also an effect that the head of the bolt can be fixed in a comfortable posture from above the block without putting hands and pressing the head of the bolt, and reliable screwing can be performed.

Further, by providing a fixing piece on the upright piece,
Since the anti-swing device can be fixed to the block itself, only the work of vertically moving the tightening tool is required, and the effect of the upright piece simplifies the entire work, and has the beneficial effect of enabling a more reliable connection. Is also played.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a block tightening tool according to the present invention.

2A and 2B show a fastener, (A) is a side view, and (B) is a sectional view taken along line AA of (A).

[Fig. 3] Fig. 3 shows a rotation prevention tool, (a) is a front view, (b)
Is a side view, and (c) is a sectional view taken along line BB of (b).

FIG. 4A is a cross-sectional view showing a state of the tightening tool fitted to the nut in the recessed portion on the side surface of the block, and FIG. 4B is a state of the anti-rotation tool similarly fitted to the head of the bolt. FIG.

FIG. 5 is a cross-sectional view showing a state in which a nut is tightened by a tightening tool.

FIG. 6 is an enlarged sectional view of an essential part showing a connected state.

7A and 7B are cross-sectional views showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tightening tool 2 ... Ratchet main body 3 ... Lever body 7 ... Projection part 10 ... Rotation prevention tool 11, 11 '... Block 12 ... Receiving member 12a ... Fitting hole 13, 13' ... Flange part 14 ... Standing piece 15 ... Fixed piece

Claims (5)

[Claims] 1. A block (1) made of concrete or the like.
1) and (11 ′) are joined to each other at their end faces, and bolts are inserted into the flange portions (13) and (13 ′) provided on the side surfaces of the blocks (11) and (11 ′). 13 ') is a block tightening tool used when tightening a nut to the tip of a bolt protruding from a lever body (3) rotatably connected to the ratchet body (2). ) Is pushed and pulled in its longitudinal direction to rotate the ratchet body (2) in a fixed direction so that the ratchet body (2) can be tightened, and either the nut or the bolt can be tightened by the tightening tool (1). A tool for tightening a block, comprising a rotation preventing tool (10) for preventing rotation of one bolt or nut when rotating the other. 2. A receiving member (12) provided with a fitting hole (12a) into which the head of a bolt or a nut can be fitted, and the receiving member (12). The tool for tightening a block according to claim 1, which is composed of a raised piece (14). 3. The standing piece (14) includes a fixing piece (15) having a flat surface portion (15a) capable of abutting at least an upper surface of the block to fix the receiving member (12) to the block (11). The block tightening tool according to claim 2, which is provided. 4. A block (1) made of concrete or the like.
1), (11 ') are joined together at their end faces, and bolts are inserted into flange portions (13), (13,) provided on the side surfaces of the blocks (11), (11'), and the heads of the bolts are inserted. The fitting hole (12a) provided in the receiving member (12) of the anti-rotation device (10) is fitted to the part to fix the bolt, and the flange (13) of the block (11 ') to be joined and connected is also fixed. '), A nut is fitted to the tip side of the bolt, the ratchet body (2) is fitted to the nut, and the lever body (3) rotatably connected to the ratchet body (2) is attached to the block ( 11 ') is projected onto the upper surface, and the lever body (3) is pushed and pulled up and down to tighten the nut, and the adjacent blocks (11),
(11 ') is connected, The connection method between blocks by a bolt and nut characterized by the above-mentioned. 5. The receiving member (12) of the anti-rotation device (10) and the ratchet body (2) are blocks (1).
1) and (11 ') are provided with concave portions (11
The method for connecting between blocks using a bolt and nut according to claim 4, wherein the blocks are housed in (a) and (11a ').