JP2018168539A - Anchor bolt holding device - Google Patents

Abstract

To provide an anchor bolt holding device to allow an anchor bolt to be held through only fitting it between forming panels and a threaded part of an anchor bolt to be secured in an upright state at a center of the base.SOLUTION: An anchor bolt holding device comprises: a lower supporting part 3 having a same size as each width of surfaces 20, 21 of the forming panels 18, 19 at both sides; surface abutting parts 4, 5 raised parallely from both sides of the lower supporting part 3; upper abutting parts 6, 7 protruded outward and toward both sides from each of upper end parts of the surface abutting parts; rear surface holding part 8, 9 suspended from each outer end parts of the upper abutting parts; an upper supporting part 2 arranged between both upper end parts of the surface abutting parts; bolt supporting holes 10, 11 arranged respectively at an upper supporting part 2 and the lower supporting part 3; and a securing part 12 to allow the anchor bolt 17 inserted in both of the bolt supporting holes to be secured on the upper supporting part 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for supporting anchor bolts for foundations used when placing concrete as a foundation in construction work.

In building foundation work, the formwork panel surrounding the space for pouring ready-mixed concrete into the foundation is discarded and stood on the concrete, and the main bars are fixed horizontally in the center with reinforcement bars, plastic spacers, and the like. The anchor bolt is fixed to the main reinforcement with a wire to fix the foundation on the upper part of the foundation. At that time, the main reinforcement exists in the center of the foundation. The reality is that it is difficult to fix vertically in the center.
As a result, it is necessary to correct the anchor bolt to a vertical state after the concrete is hardened, which is not easy and requires a great deal of labor.
The anchor bolt can be erected if it is in a biased position avoiding the center of the foundation, but it is not preferable because it causes a decrease in mounting accuracy and a decrease in earthquake resistance.

On the other hand, a base anchor bolt holding device as described in Patent Document 1 that holds an anchor bolt on a mold when placing concrete has been proposed.
In this proposal, the anchor bolt is held upright in the center of the formwork and the projecting amount from the foundation is adjusted, but the device is fixed to the formwork with screws and the projecting amount is adjusted. Because the vertical motion plate with a long oblong hole is supported by a single bolt and nut, if the tightening of the screw or nut is weak, the anchor bolt tilts in response to the concrete flow pressure during concrete placement. Further, there is a possibility that it will be fixed without being restored as it is, and it will be very troublesome to attach and remove the anchor bolt with the nut.

JP-A-8-184059

  The present invention has been made in view of the above-described conventional situation, and the anchor bolt is surely in a vertical state at the center of the formwork so that the anchor bolt is not fixed to the foundation while being inclined when placing concrete. It is an object of the present invention to provide an anchor bolt supporting device that can be supported by the bracket and can be easily attached to and detached from the formwork panel and the anchor bolt.

  In order to achieve the above object, the anchor bolt support device of the present invention is detachably fixed to the upper part between the formwork panels provided on both sides of the foundation in the foundation work of the building, and the cast concrete is hardened. An anchor bolt support device for holding an anchor bolt for fixing a base in an upright state between the formwork panels until a lower support part having the same size as the width between the surfaces of the formwork panels on both sides, and the lower support Of the formwork panel that receives from the ready-mixed concrete when the concrete is placed against the buried part of the anchor bolt on the underside of the anchor bolt with the same dimension as the width between the surfaces of the formwork panels on both sides A surface abutting portion raised in parallel at a depth at which a frictional resistance against the flow pressure in the longitudinal direction can be obtained, and a downward abutting surface from the upper end portion of the surface abutting portion toward the outside are contacted with the surface. Perpendicular to the abutment surface An upper end abutting portion that protrudes on both sides on the same plane, a rear holding portion that hangs from the outer end portion of the upper end abutting portion and an opposite surface parallel to the abutting surface of the surface abutting portion, and both sides An upper support portion installed at an interval between the upper end portions of the surface contact portion and the lower support portion so that the anchor bolt can be stably supported, and an anchor bolt inserted above and below the upper end contact portion. Bolt support hole provided at the center of the upper support part and the bolt support hole provided at the center of the lower support part, and the anchor bolts inserted into both bolt support holes as the upper support. And a fixing portion that can be fixed to the lower support portion or the lower support portion.

  According to a second aspect of the present invention, in the above invention, the fixing portion sandwiches an anchor bolt inserted into both bolt support holes, and surrounds the bolt support hole of the upper support portion or the bolt support hole of the lower support portion. It is equipped with a clamping member that can stop the vertical movement by hitting the periphery, and can be adjusted up and down by removing the clamping member from the anchor bolt, and the upper support part or upper support by clamping the clamping member to the anchor bolt An anchor bolt can be fixed to the portion.

  According to a third aspect of the present invention, in the above invention, the upper portion and the lower portion of the tubular body in which the straight portion of the anchor bolt can be inserted and removed are joined to the upper support portion bolt support hole and the lower support portion bolt support hole. The pipe body is fitted with a fastening screw that penetrates the peripheral wall, and the anchor bolt inserted into the pipe body can be loosened, and the anchor bolt can be adjusted up and down on the upper and lower support sections by loosening the fixing screw. The anchor bolts can be fixed to the upper support portion and the lower support portion by tightening.

In the anchor bolt support device of the present invention, the anchor bolt inserted into the bolt support hole in advance is fixed at the height designed by the fixing portion, and is fitted between the assembled formwork panels so as to drop from above. . That is, it is possible to easily perform the mounting operation by simply fitting the upper part of the formwork panel without using other fastening parts such as bolts and screws.
In addition, when the formwork panel is peeled off from the foundation concrete surface, it is necessary to remove the formwork panel after the concrete has hardened. Can be removed easily.
At the time of placing concrete, even if the anchor bolt attached is subjected to the flow pressure of the ready-mixed concrete to the anchor portion, the contact surface between the surface of the mold and the contact surface of the surface contact portion that resists the flow pressure The vertical state can be maintained until the concrete is hardened without tilting the anchor bolt due to the frictional resistance.
For this reason, the threaded part of the anchor bolt is securely fixed to the center of the solid concrete foundation in a vertical state. It becomes unnecessary.
As a result, it is possible to save a great deal of labor and reduce costs in the foundation work and the subsequent base installation work.
Further, the occurrence of insufficient strength of the foundation and the foundation due to the deviation of the anchor bolt with respect to the foundation is prevented.
Furthermore, since the anchor bolt support device has a simple structure, the service life can be maintained long, and the manufacturing cost can be kept low.

According to the second aspect of the present invention, the anchor bolt is fixed to the upper support portion and the lower support portion by a simple manual operation in which a fixing member is used for the fixing portion and the fixing member is clamped to the anchor bolt. The position can be adjusted in a short time, and fixing to the upper support portion and the lower support portion can be easily performed.
As a result, it is possible to greatly improve the efficiency of the anchor bolt fixing work to the anchor bolt support device.

In the third aspect of the present invention, the fixing screw provided on the peripheral wall of the pipe body is loosened and adjusted up and down to the designed anchor bolt support position, and tightened to fix the anchor bolt at that position. Therefore, the attachment / detachment of the anchor bolt and the adjustment and fixing of the height of the anchor bolt can be performed very easily.
As a result, the efficiency of the anchor bolt fixing operation to the anchor bolt support device can be greatly improved.

It is a vertical perspective view which shows the use condition of this invention. It is a vertical side view which shows the use condition of this invention. It is a front view which shows the use condition of this invention. It is the perspective view shown excluding the fixing | fixed part of this invention. It is a perspective view which shows the state which fixed the anchor bolt to the fixing | fixed part. It is a perspective view which shows the state which fixed the anchor bolt to the fixing | fixed part of the form provided with the tubular body. It is an enlarged front view which shows a use condition. It is an enlarged front view which shows the use condition which inclined the anchor bolt.

  The anchor bolt support device of the present invention is detachably installed on the upper part of the form panel on both sides for pouring concrete when building a foundation made of reinforced concrete on which a foundation is placed in a building work, and the top of the form is fixed. Rather than being used as a clamp for fixing at intervals, and without fixing the anchor bolt to the main bar, the anchor portion of the anchor bolt is embedded in the placed concrete, and the screw portion is placed in the form panel until the concrete is solidified. It is supported in an upright state in the center of the inner space.

In FIG. 1, reinforcing bars such as main reinforcing bars 24 and 25 are placed on a base 27 in form panels 18 and 19 assembled on a flattened discarded concrete, and above the form panels 18 and 19. The anchor bolt support device 1 of the present invention is mounted, and the anchor bolt 17 held by the anchor bolt support device 1 is not fixed to the main bars 24 and 25, and the screw portion 17a is the internal space of the formwork panels 18 and 19. The state before the concrete placement supported in the center of is shown.
In the present invention, as shown in FIG. 1, the upper portion of the upper portion of the straight portion is provided with a screw portion 17 a at the upper portion, a bent anchor portion 17 c at the lower portion, and an intermediate portion arranged at the center of the foundation. An anchor bolt 17 having a bent portion 27b is used to avoid crossing 24 and the lower main muscle 25 at the center of the foundation.

  As shown in FIG. 1, the anchor bolt support device 1 of the present invention as a whole is a lower part having the same width as the width between the surfaces 20 and 21 of the mold plates 18a and 19a of the opposite side mold panels 18 and 19. The support part 3, the surface contact parts 4 and 5 raised in parallel from both sides of the lower support part 3, and the upper end contact protruded horizontally outward from the upper end parts of the both surface contact parts 4 and 5 Parts 6 and 7, rear holding parts 8 and 9 suspended from the outer ends of the upper end contact parts 6 and 7, and an upper support part 2 constructed between the upper end parts of the surface contact parts 4 and 5 The upper and lower bolt support holes 10 and 11 penetrating in the center of the upper support portion 2 and the lower support portion 3 and the anchor bolts 17 inserted into the bolt support holes 10 and 11 are connected to the upper support portion 2 or the lower portion. The fixing unit 12 is configured to be fixed to the support unit 3.

Each part of the anchor bolt support device 1 having the above configuration will be described in more detail below.

As shown in FIG. 4, the upper support portion 2, the lower support portion 3, both front surface contact portions 4, 5, both upper end contact portions 6, 7 and both rear surface holding portions 8, 9 are constant and constant in width. An elongated rectangular metal plate made of iron or stainless steel with excellent bending strength is bent at 90 degrees for each corner.
As the metal plate, for example, an iron plate having a width of 23 to 35 mm and a thickness of about 1 to 3 mm can be used.
The reason why the horizontal width is set to 35 mm is to ensure ease of handling such as carrying and mounting, so that the work can be carried out smoothly without interfering with concrete pouring, and if the horizontal width is larger than this, This is not preferable because it can hinder the concrete pouring work by narrowing the opening area between the upper and lower mold panels.

Further, the upper support portion 2 is constructed between the upper portions of the surface contact portions 4 and 5 on both sides by welding both end portions of another rectangular metal plate to the surface contact portions 4 and 5.
FIG. 4 shows a mode in which both sides of the upper support portion 2 are made longer than between the surface contact portions 4 and 5 and the longer portions are overlapped and welded to the both upper end contact portions 6 and 7. However, both end portions of the upper support portion 2 may be welded to the upper end portions of the surface contact portions 4 and 5 without overlapping.

Next, the surface contact portions 4 and 5 will be described.
2 is a longitudinal side view showing the use state of the present invention, and FIG. 3 is a front view showing the use state of the present invention.
As shown in FIGS. 2 and 3, the two abutting portions 4 and 5 are abutted in parallel with the same dimension as the width between the surfaces 20 and 21 of the opposite formwork panels 18 and 19. Surfaces 4a and 5a are provided.
The abutting surfaces 4a and 5a have anchor bolts 17 inserted into the upper and lower bolt support holes 10 and 11 to fix the height, and the surface abutting portions 4 and 5 are fitted between the mold panels 18 and 19 on both sides. When the concrete is placed, the corresponding contact surfaces 4a and 5a are formed against the form panel 18 against the fluid pressure in the longitudinal direction of the form panel received from the ready-mixed concrete in the embedded portion of the anchor bolt 17 below. A frictional resistance that does not slip on the surfaces 20 and 21 of 19 is obtained.
Since the horizontal width of the contact surfaces 4a and 5a is the same as the horizontal width of the lower support portion 3 and the upper support portion 2, the vertical width is increased in order to increase the frictional resistance of the corresponding contact surfaces 4a and 5a. That is, since the heights of the upper end surfaces 22 and 23 of the mold panels 18 and 19 are determined, they are formed deeply below the upper end surfaces 22 and 23.

  Even if the contact surfaces 4a and 5a of the surface contact portions 4 and 5 are formed deeper downward, the depth of the contact surfaces 4a and 5a is limited depending on the placement height of the foundation concrete. , 19 is used with a height having a margin with respect to the concrete placement height. For example, the depth A can be 15 mm at the minimum and 40 mm at the maximum.

  The selection of the depth A of the surface abutting surfaces 4 and 5 takes into account the length of the anchor portion of the anchor bolt 17 to be used, the high fluidity of the raw concrete, and the like, when the anchor portion of the anchor bolt 17 is long In addition, if the fluidity of the raw concrete is low and hard, it will be strongly subjected to the flow pressure of the large raw concrete, and accordingly the depth A will be increased to increase the frictional resistance and the contact area will be increased. Can be selected.

Next, the upper end contact portions 6 and 7 will be described.
As shown in FIG. 4, the upper end abutting portions 6 and 7 are abutting surfaces which are bent at an angle of 90 degrees outward from the upper end portions of the two surface abutting portions 4 and 5 and are on the same horizontal plane. 6a and 7a.
That is, the upper end contact surfaces 6 and 7 are perpendicular to the surface contact portions 4 and 5, and the upper end contact surfaces 6a and 7a on both sides are on the same plane.
For example, the lateral width of the surface is a constant lateral width of 23 to 35 mm, which is the same as the lower support portion 3 and the upper support portion 2.
When the wooden formwork panels 18 and 19 are used in which square plates of 55 mm in length and 25 mm in width are fixed around the back side of a square plywood having a thickness of 12 mm and a height of 550 mm, the upper end contact portion The lengths of the contact surfaces 6a and 7a of 6 and 7 are 67 mm, which is the sum of the width 55mm of the upper frames 18b and 19b of the mold panels 18 and 19 and the thickness of the template 12mm.
The length of the upper end contact portions 6 and 7 is such that the width of the upper frames 18b and 19b of the mold panels 18 and 19 is 55 mm and the thickness of the template so as to be placed on the upper end surfaces 22 and 23 of the mold panels 18 and 19. 72 mm, which is 5 mm longer than 67 mm which is the width of the upper end surfaces 22 and 23 obtained by adding 12 mm.
With this length, the contact surfaces 6a and 7a of the upper end contact portions 6 and 7 are surely secured even if the mold panels 18 and 19 are distorted with respect to the upper end surfaces 22 and 23 of the mold panels 15 and 16. It becomes possible to make it contact | abut.

  The lateral width of the upper end contact portions 6 and 7 is a constant width of 23 to 35 mm as described above, but the wider one is the distance to the both end sides of the contact surfaces 6a and 7a of the upper end contact portions 6 and 7. Therefore, when placed on top of the upper mold panels 18 and 19, stability in the longitudinal direction of the mold panels increases, but on the other hand, it becomes more bulky and difficult to store in a compact manner. Since it also interferes with concrete placing work, it is limited to 35 mm at the maximum, and when it is less than 23 mm, the vertical stability is lowered, so it is limited to 23 mm at the minimum.

Next, the back surface holding portions 8 and 9 will be described.
As shown in FIG. 4, the back surface holding portions 8 and 9 are formed outside the upper end contact portions 6 and 7. For example, as described above, the length of the upper end contact portions 6 and 7 is 72 mm. In this case, the upper end abutting portions 6 and 7 may be bent at an angle of 90 degrees downward from the outer end portions.
In this case, the opposing surfaces 8a and 9a of the back surface holding portions 8 and 9 with respect to the abutting surfaces 4a and 5a of the surface abutting portions 4 and 5 are the upper frames of the mold panels 18 and 19 having a top end width of 67 mm. Since it is 5 mm away from the back of 18b and 18b, this opposing surface 8 does not contact the back of upper frame 18b and 18b.
The surface contact portions 4 and 5 can be securely fitted into the mold panels 18 and 19 by a small gap formed behind the upper frames 18b and 19b of the mold panels 18 and 19. Become.
However, since the wooden formwork panels 18 and 19 are reused, the surfaces 18a and 19a may be soiled with concrete, and the upper frames 18b and 19b and the molds 18a and 18a may be distorted or damaged. Therefore, a gap of 5 mm behind the upper frames 18b and 19b cannot be obtained. For this reason, the upper frames 18b and 18b are pressed against the back of the upper frames 18b and 18b, and the surface abutting portions 4 and 5 are contacted. Good results may be obtained that increase the frictional resistance between the contact surfaces 4a, 5a and the surfaces 20, 21 of the formwork panels 18, 19.
When the formwork panels 18 and 19 are moved due to a collision or an earthquake at the time of movement of workers or building equipment, the opposing surface 8 of the rear holding portions 8 and 9 hits behind the formwork panels 18 and 19 and the book It is possible to prevent the anchor bolt support device 1 from being separated from the formwork panels 18 and 19 or from being displaced.

Next, the upper support part 2 will be described.
In FIG. 1, the upper support part 2 shows a mode in which a metal plate is erected between the upper end parts of the surface abutting parts 4 and 5 by raising both sides and bridging the upper part horizontally. .
In this aspect, the height of the auction is set so that the upper bolt support hole 6 does not exceed the upper end 17d of the anchor bolt 17 fixed to the foundation at the maximum.
Although not shown in the drawing, the upper support portion 2 has a trapezoidal shape in which the height is equal to the height of the upper end abutting portions 6 and 7 and is flat continuously to the upper end abutting portions 6 and 7, or the central portion is high. Shaped embodiments are also possible.

Next, the upper and lower bolt support holes 10 and 11 will be described.
As shown in FIGS. 2 and 3, the bolt support holes 10, 11 are formed in the central portions of the upper support portion 2 and the lower support portion 3, and on the contact surfaces 6 a, 7 a of the upper end contact portions 6, 7. On the other hand, it penetrates so that it may become vertical at the top and bottom.
The diameters of the bolt support holes 10 and 11 are sized so that the straight portion including the threaded portion 17a of the anchor bolt 17 can be inserted from the upper end portion 17d with little play.

An interval between the upper bolt support hole 10 and the lower bolt support hole 11 is set to an interval at which the anchor bolt 17 inserted into both the bolt support holes 10 and 11 can be stably supported.
The larger the distance between the upper bolt support hole 10 and the lower bolt support hole 11 is, the higher the accuracy of the verticality of the anchor bolt 17 is and the more stable the anchor bolt 17 is. The upper bolt support hole 10 provided in the upper limit 17d of the anchor bolt 17 cannot be exceeded, so that the height is limited, and the lower bolt support hole 10 provided in the lower lower support portion 3 is provided. There is a limit to its low height because it must not hit the concrete of the foundation.

Therefore, in the case of a high foundation and the distance from the upper part of the foundation to the upper end faces 22 and 23 of the formwork panels 18 and 19 is small, the upper support part 2 is lifted up and the position of the upper bolt support hole 10 is increased. By increasing the height, it is possible to obtain a large interval between the upper bolt support hole 10 and the lower bolt support hole 11.
On the contrary, if the lower foundation is a large foundation and the distance from the upper part of the foundation to the upper end faces 22 and 23 of the formwork panels 18 and 19 is large and the position of the upper end 17d of the anchor bolt 17 is low, The support part 2 is lowered to a flat position to lower the position of the upper bolt support hole 10, and the lower lower support part 3 is lowered to lower the lower bolt support hole 11, thereby It is possible to obtain a large distance from the lower bolt support hole 11.

Next, the fixing part 12 will be described.
The fixing portion 12 vertically adjusts the support position of the straight portion of the anchor bolt 17 inserted into the upper bolt support hole 10 and the lower bolt support hole 11, and the upper support portion 2 and the lower support portion 3 at the adjustment position. 1 and FIG. 5 with respect to the anchor bolt 17 as shown in FIG. 1 and FIG. 5, and is temporarily fixed until the concrete poured between the formwork panels 18 and 19 is hardened. 2 to adjust the height of the anchor bolt 17 by attaching the clamping member 13 from the upper side and the lower side of the bolt support hole 10 (not shown because it is hidden under the upper support part 2). The anchor bolt 17 can be fixed at an arbitrary position.
FIG. 1 shows an aspect in which a clamping member 13 is attached to the upper support part 2. The clamping member 13 is placed close to the lower support part 2 on the upper side and the lower side of the bolt support hole 11 of the lower support part 3. It is possible to attach the anchor bolt 17 to each other, and the height of the anchor bolt 17 can be adjusted in the same manner, so that the anchor bolt 17 can be fixed at an arbitrary position.

As shown in FIG. 5, the pinching member 13 can be fixed by sandwiching an anchor bolt 17 between them if an elastic metal bifurcated pin is used, and the anchor bolt 17 is slid up and down against the frictional resistance as it is. The height of the anchor bolt 17 can be adjusted.
The clamping member 13 can be fixed with an anchor bolt 17 interposed therebetween. In addition to the bifurcated pin, various clampings such as a clip with a spring that can be opened and closed by pressing both sides with a finger. It is possible to use a pinching member 13 that can be attached.

Further, as shown in FIG. 6, the fixing portion 12 has an inner diameter of the upper bolt support hole 10 and an inner diameter of the lower bolt support hole 11 between the upper bolt support hole 10 and the lower bolt support hole 11. The form which joined the pipe body 14 which can insert the anchor bolt 17 which penetrates perpendicularly | vertically continuously is possible.
In this embodiment, when the upper bolt support hole 10 and the lower bolt support hole 11 are fixed by welding, the tube body 14 is made of iron having the same diameter as the upper bolt support hole 10 and the lower bolt support hole 11. A metal tube such as stainless steel can be used.
Further, a tube 14 made of metal or the like into which an anchor bolt 17 longer than between the upper bolt support hole 10 and the lower bolt support hole 11 can be inserted is connected to the upper bolt support hole 10 and the lower bolt support hole 11. The projecting part on both sides of the tube body 14 is provided with a horizontal notch groove near the upper bolt support hole 10 and the lower bolt support hole 11, and a bifurcated clip is inserted into this groove. A mode of inserting and fixing is also possible.
Then, as shown in FIG. 6, the fixing screw 16 is screwed into the screw hole 15 that penetrates the peripheral wall of the tube body 14, the anchor bolt 17 is loosened and adjusted up and down, and tightened. Be able to fix in that position.

In addition, if the upper support plate 2, the lower support portion 3, the front surface contact portions 4, 5, the upper end contact portions 6, 7, and the back surface holding portions 8, 9 are corrugated, the strength can be increased in the longitudinal direction. . In this case, since the contact area with the mold surface 20 or 21 is reduced, it is necessary to form it so that a sufficient frictional resistance against the surfaces of the mold plates 18a and 19a is obtained.
Further, if a small hole is provided in the plate surface of the upper end abutting portions 6 and 6 and the back surface holding portions 8 and 9, a screw or a nail can be inserted into the small hole and securely fixed to the mold. .

  Although each part which comprises the anchor bolt support apparatus 1 of this invention was demonstrated above, the foundation construction which uses the anchor bolt support apparatus 1 is demonstrated next.

At the time of formwork construction for building foundation work, as shown in FIG. 1, anchor bolts 17 are inserted in advance into the upper bolt support hole 10 and the lower bolt support hole 11 to the upper support plate 2 or the lower support portion 3. Then, the anchor bolt support device 1 is simply fitted into the formwork panels 18 and 19 without using screws or the like.
Then, the contact surfaces 4a and 5a of the surface contact portions 4 and 5 of the anchor bolt supporting device 1 fitted into contact with the surfaces 20 and 21 of the mold panels 18 and 19, and the contact surfaces 4a and 5a are As shown by the hatched parts in FIG. 7 and FIG. 8, because the lower area surrounded by four corners of a quadrangle that can obtain the frictional resistance against the surface of the formwork against the flow pressure of ready-mixed concrete, The mold panels 18 and 19 do not tilt in the longitudinal direction, and are further firmly fixed to the mold by the contact surfaces 4a and 5a of the parallel surface contact portions 4 and 5 that face each other. No inclination in the width direction occurs.
That is, the vertical state of the anchor bolt 17 is maintained without inclining in all directions.

Once the concrete has hardened, it can be easily removed by loosening the clips and screws on the fixed part.
In that case, if the space | interval between the formwork panels 18 and 19 spreads with the operation | work which peels the formwork panels 18 and 19 from a foundation, the contact surfaces 4a and 5a of the surface contact parts 4 and 5 will become the formwork panel 18. , 19 will naturally loosen away from the surfaces 20 and 21, and can be easily removed in a short time, and the working efficiency can be greatly improved.
Then, in the base mounting work that is performed thereafter, the bolt upright correction work that is extremely laborious is released, so that the work efficiency of the foundation and base work can be greatly improved.

  However, as shown in FIG. 8, when an artificially large force P is applied to the anchor bolt 17 with a hammer or the like in the longitudinal direction of the mold panel, one side of the contact surfaces 4a and 5a of the upper end contact portions 4 and 5 The edge on the other side is lifted with the edge S of the shaft as a fulcrum, and the anchor bolt 17 rotates by an angle α and remains inclined at that angle. This is the exact position of the formwork panel. This function is required when the fitting position is corrected in order to attach the anchor bolt support device 1 to the frame or when the anchor bolt support device 1 is detached from the formwork panels 18 and 19.

Further, before pouring concrete, the surface abutting portions 4 and 5 of the both sides of the formwork panels 18 and 19 may be opened due to rolling of the formwork panels due to the collision of workers during construction or building materials. Even if the frictional resistance between the contact surfaces 4a and 5a and the surfaces 20 and 21 of the mold panels 18 and 19 temporarily disappears, the upper end contact portions 6 and 7 are the upper end surfaces 22 of the mold panels 18 and 19, respectively. , 23, the vertical state of the anchor bolts 17 can be automatically maintained by being kept in close contact with gravity.
As a result, the anchor bolt 17 is kept upright from the time when the formwork panels 18 and 19 are assembled to the end of pouring the concrete, and after the concrete is hardened, the anchor car bolt 17 is fixed upright in the center of the foundation. Become.

  The present invention mainly fixes an anchor bolt for fixing the foundation of a wooden house building in the center of a reinforced concrete foundation in an upright state, but it is also used in foundation work in various buildings such as factories and warehouses other than houses. Is possible.

DESCRIPTION OF SYMBOLS 1 Anchor bolt support apparatus 2 Upper support part 3 Lower support part 4 Surface contact part 4a Contact surface 5 Surface contact part 5a Contact surface 6 Upper end contact part 6a Contact surface 7 Upper end contact part 7a Contact surface 8 Back surface holding part 8a Opposing surface 9 Back surface holding part 9a Opposing surface 10 Bolt support hole 11 Bolt support hole 12 Fixing part 13 Clamping member 14 Tube 15 Screw hole 16 Fixing screw 17 Anchor bolt 17a Screw part 17b Bending part 17c Anchor part 17d Upper end 18 Mold frame panel 18a Mold plate surface 18b Upper frame 18c Lower frame 19 Mold frame panel 19a Mold plate surface 19b Upper frame 19c Lower frame 20 Mold plate surface 21 Mold plate surface 22 Mold frame panel upper end surface 23 Upper end surface 24 of formwork panel Upper main bar 25 Lower main bar 26 Longitudinal bar A Depth of contact surface of surface contact part B Horizontal width of contact surface of surface contact part

Claims (3)

In building foundation work, detachably fix the upper part between the formwork panels on both sides of the foundation, and fix the anchor bolts for fixing the foundation upright between the formwork panels until the cast concrete has hardened. An anchor bolt support device for holding,
A lower support having the same dimensions as the width between the surfaces of the formwork panels on both sides;
A mold that receives an abutting surface that faces outward from the both sides of the lower support part with the same size as the surface of the mold panel on both sides from the ready-mixed concrete when the concrete is placed against the buried part below the anchor bolt A surface abutting portion raised in parallel at a depth that provides frictional resistance against the flow pressure in the longitudinal direction of the frame panel;
An upper end abutting portion projecting outwardly from the upper end portion of the surface abutting portion toward both sides on the same plane and perpendicular to the abutting surface of the surface abutting portion;
A back support portion that hangs from the outer end portion of the upper end contact portion and a facing surface parallel to the contact surface of the surface contact portion, and the lower support portion between the upper end portions of the surface contact portions on both sides. An upper support portion installed at an interval that enables the anchor bolt to be stably supported between,
A bolt support hole provided in the center of the upper support portion and a lower support portion, which is capable of supporting the anchor bolts inserted above and below vertically with respect to the contact surface of the upper end contact portion; and
A fixing part capable of fixing the anchor bolt inserted into both bolt support holes to the upper support part or the lower support part;
An anchor bolt support device comprising:   A fixing member that clamps an anchor bolt inserted into both bolt support holes and stops the vertical movement by hitting the periphery of the bolt support hole of the upper support part or the bolt support hole of the lower support part. It is possible to adjust up and down by removing the clamping member from the anchor bolt, and by fixing the clamping member to the anchor bolt, the anchor bolt can be fixed to the upper support part or the upper support part. The anchor bolt support device according to claim 1. The upper and lower parts of the tube that can be inserted and removed with a straight part of the anchor bolt are joined to the upper support bolt support hole and the lower support bolt support hole, and the fixed part is tightened through the peripheral wall of the tube The fixing bolt is attached, and the anchor bolt inserted into the tube body can be loosened by loosening the fixing screw so that the anchor bolt can be adjusted up and down on the upper support part and the lower support part. The anchor bolt support device according to claim 1, wherein the anchor bolt can be fixed.

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