JP6628964B2 - Precast foundation position adjustment jig - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for adjusting the position of a precast foundation used for adjusting the position of the precast foundation during construction.

  BACKGROUND ART As a cloth foundation of a house or the like, a rising part may be a precast foundation and a base part may be made of cast-in-place concrete. Conventionally, when performing such position adjustment of the precast foundation at the time of construction, as shown in FIG. 11, for example, as shown in FIG. In this state, a device such as a bur is inserted into the lower part of the precast base 50 to adjust the position (for example, Patent Document 1). In addition, Patent Literature 2 discloses a technique in which a precast foundation is lifted using a level adjustment bolt to adjust the height.

JP 2008-240243 A JP 2002-212957 A JP-A-9-100503

  If the position is adjusted by inserting a bur or the like into the lower part of the precast foundation as in the above-described conventional example, there is a problem that the accuracy of the position adjustment depends on the skill of the operator. Further, in the example disclosed in Patent Literature 2, the height of the precast foundation is adjusted by the level adjustment bolt, and the horizontal position cannot be adjusted.

  An object of the present invention is to provide a position adjusting jig for a precast foundation that can accurately and easily adjust the position of a precast foundation not only vertically but also horizontally in construction.

The position adjustment jig of the precast foundation of the present invention is a position adjustment jig of the precast foundation that adjusts the position of the precast foundation having the hanging part joined portion on the upper surface of the precast foundation body at the time of construction,
A support leg assembly having a plurality of support legs and an upper end member joined to the upper ends of the plurality of support legs, the support leg assembly being disposed in a self-supporting state over the precast foundation from above,
A suspender having a coupling portion at a lower end detachably coupled to the suspender coupled portion of the precast foundation,
A height adjustment mechanism provided on the upper end member of the support leg assembly to lift the suspender together with the precast foundation coupled to the suspender so that the height can be adjusted,
The height adjustment mechanism has a male screw member provided with a vertical screw hole in a member provided in the upper end member and screwed into the screw hole, and an upper end of the hanging member is provided at a lower end of the male screw member. in but coupled rotatably, said hanging member is one of a wire rope or a plurality concatenated carabiner to present to the coupling portion provided at the lower end of the wire rope or a plurality concatenated carabiner Be composed.

According to the position adjusting jig having this configuration, the support leg assembly is disposed so as to straddle the precast foundation from above, and the precast foundation is lifted by the suspending tool provided on the support leg assembly. In this state, the position of the precast foundation can be accurately adjusted in the vertical direction by adjusting the height with the height adjusting mechanism provided on the upper end member of the support leg assembly. Also, in the state where the precast foundation is lifted off the ground by lifting it as described above, there is no frictional resistance due to the ground, so it is somewhat possible for the worker to support it in a suspended state while pushing or pulling it. It can be moved in and out as well as in the long side. By lowering the precast foundation at the moved position, the position of the precast foundation can be adjusted in the in-out direction and the long-side direction. When the precast foundation is carried into the construction position with a crane or the like, a certain degree of positional accuracy is obtained. For example, if the position can be adjusted to about several centimeters, the required accuracy can be obtained. With this amount of adjustment, it is possible to adjust the amount by setting it in the floating state as described above. The hanging tool coupling portion of the precast foundation is generally provided with an anchor separately from an anchor for joining a column base to the precast foundation in order to attach an eye bolt or the like that hooks a hook when hanging a crane. It is sufficient to use such a hanging tool coupling portion for hanging a crane.
As described above, according to the position adjusting jig of the present invention, the position of the precast foundation can be accurately and easily adjusted not only in the vertical direction but also in the horizontal direction during construction.

In this invention, the width of the short side of the upper surface is smaller than the height of the precast foundation, and the support leg assembly straddles the precast foundation in a direction crossing the long side of the upper surface. The upper end member may be provided with an entrance / exit direction adjustment mechanism capable of adjusting the position of the hanging member in the entrance / exit direction which is the direction of the short side of the precast foundation. As a precast foundation having such a shape, there is a precast foundation serving as a rising portion of a cloth foundation.
When the entry / exit direction adjustment mechanism is provided as in this configuration, the position adjustment of the entry / exit direction of the precast foundation is more easily and accurately performed than when the operator pushes and pulls while suspending the heavy precast foundation. be able to.

In the present invention, in addition to the entrance / exit direction adjusting mechanism, a long side direction adjusting mechanism capable of adjusting a position of the hanging member in a long side direction of the precast base may be provided on the upper end member.
When the long side direction adjusting mechanism is provided as in this configuration, the position adjustment in the long side direction of the precast base can be performed more easily and accurately.

In the present invention, the said top member of the support leg assembly, wherein as the member which screw holes are provided, any direction movable member moving freely in any direction in a horizontal plane is installed, before Symbol out direction adjusting mechanism Are positioned on both sides in the direction of the short side of the precast base relative to the movable member in the arbitrary direction, and are position-adjustable in the direction of the short side, and are movable by pushing the movable member in the arbitrary direction at the tip. The long-side direction adjusting mechanism is composed of a pair of feed screw mechanisms, and is positioned on both sides of the precast foundation in the long-side direction with respect to the arbitrary direction movable member, and is capable of position adjustment in the long-side direction. It may be constituted by a pair of feed screw mechanisms which can be moved by pushing the movable member in any direction at the tip.
In the case of this configuration, it is possible to more easily and accurately adjust the position of the precast foundation in the entering and exiting directions and the long side direction.

In the present invention, a first direction of a first direction that is one of the long side direction and the short side direction and a second direction that is the other direction are provided on the upper end member of the support leg assembly. A first direction movable member is movably installed in the first direction movable member, and a second direction movable member is installed on the first direction movable member as the member having the screw hole formed therein so as to be movable in the second direction ;
Before Symbol a first direction movable member, the first direction movable member push-pull possible manner the upper end on the member and the position adjustment in the first direction freely the installed feed screw mechanism first direction adjustment mechanism Composed,
A second direction adjusting mechanism including the second direction movable member and a feed screw mechanism installed on the first direction member so as to be capable of adjusting the position in the second direction so as to be able to push and pull the second direction movable member. Is composed,
One of the first direction adjustment mechanism and the second direction adjustment mechanism may be the long side direction adjustment mechanism, and the other adjustment mechanism may be the entry and exit direction adjustment mechanism.
In the case of this configuration, the number of components increases as compared with the case where a movable member in any direction is provided as in the previous configuration, but the movement in each direction can be performed more accurately and smoothly, and in the entrance and exit directions of the precast foundation and the long side direction. Can be adjusted more easily and accurately.

The position adjusting jig of the precast foundation of the present invention is a position adjusting jig of the precast foundation which adjusts the position of the precast foundation having the hanging part joined portion on the upper surface of the precast foundation main body at the time of construction. A support leg assembly having a leg and an upper end member connecting the upper ends of the plurality of support legs, the support leg assembly being laid over the precast foundation from above in a self-supporting state, and the hanging member joined portion of the precast foundation A hanging member having a coupling portion detachably coupled to the lower end thereof, and a height adjustable together with the precast base provided on the upper end member of the support leg assembly and connected to the hanging member. A height adjusting mechanism, wherein the height adjusting mechanism is provided with a vertical screw hole in a member provided in the upper end member, and a male screw portion screwed into the screw hole. Has an upper end of the hanger to the lower end of the male screw member is coupled rotatably, said hanging member, the wire rope or a plurality a plurality linked carabiner to one wire rope or one Since it is composed of the connecting portion provided at the lower end of the connected carabiner, it is possible to accurately adjust the position of the precast foundation not only in the vertical direction but also in the horizontal direction during construction.

It is a perspective view showing the position adjustment jig of the precast foundation concerning a 1st embodiment of this invention. It is a vertical section of the principal part of the same position adjustment jig. It is a top view of the same position adjustment jig. It is a partially broken front view of the precast foundation to which the position adjustment by the position adjustment jig is applied. It is explanatory drawing which shows the positional relationship of a precast base and a position adjustment jig in the case of using the same position adjustment jig. It is explanatory drawing which shows each example of the hanging tool in the same position adjustment jig. It is a front view showing other examples of composition of a support leg set in the same position adjustment jig. It is a perspective view showing the position adjustment jig of the precast foundation concerning other embodiments of this invention. FIG. 9 is a partially enlarged perspective view of the same position adjusting jig as viewed from a direction different from FIG. 8. It is an expanded horizontal sectional view which shows the connection part of the feed screw mechanism and the long side direction movable member of the same position adjustment jig. It is explanatory drawing of a conventional example.

  A first embodiment of the present invention will be described with reference to FIGS. This position adjustment jig of the precast foundation is a jig used for adjusting the position of the precast foundation 30 having the hanging part joined portion 31 on the upper surface of the precast foundation main body 30a at the time of construction as shown in FIG. A support leg assembly 1, a hanging tool 2, and a height adjustment mechanism 3 are provided. Further, the position adjusting jig of the precast foundation further includes an inward / outward direction adjusting mechanism 11 and a long side direction adjusting mechanism 16.

  The support leg assembly 1 includes a plurality of support legs 4 and a horizontal plate-shaped upper end member 5 having upper ends of the support legs 4 coupled to each other. Placed in Here, the case where the width of the short side of the upper surface is smaller than the height of the precast foundation 30 is shown as a rectangular parallelepiped, and the support leg assembly 1 straddles the precast foundation 30 in the direction crossing the long side. . The precast foundation 30 is used, for example, in a rising portion of a cloth foundation of a house. At the lower end, the hanging device 2 has a connecting portion 6 detachably connected to the hanging device joined portion 31 of the precast base 30.

  As shown in FIG. 4, the hanging tool joined portion 31 of the precast foundation 30 is formed of a long nut, and an anchor 32 extending downward is joined to a lower end thereof by welding or the like. It is buried at both ends in the long side direction of the precast foundation main body 30a so as to be exposed. In this case, the anchor 32 is different from a normal anchor for connecting the column base of the foundation, and is provided exclusively for lifting the precast foundation 30 by a crane. The precast foundation 30 can be lifted by a crane by hooking a hook at the tip of a wire rope on a hanging bolt 33 such as an eye bolt screwed into the hanging tool joined portion 31 formed of a long nut. The suspension bolts 33 are also used as they are for position adjustment of the precast foundation 30 by the position adjustment jig of this embodiment.

  The hanging member 2 includes, for example, a wire rope 2a and the connecting portion 6 provided at a lower end thereof. Here, a hook shown in FIG. 6A is used as the connecting portion 6. That is, when the position of the precast base 30 is adjusted, the connecting portion 6 composed of a hook is hooked on the suspension bolt 33. Alternatively, a carabiner 34 shown in FIG. 6B may be used as the connecting portion 6 at the lower end of the hanging tool 2. In addition, as the suspending tool 2, one in which a plurality of the carabiners 34 are connected may be used instead of the wire rope. In this case, the lowermost carabiner 24 becomes the connecting portion 6 that is hooked on the hanging bolt 33.

  The height adjusting mechanism 3 is provided on the upper end member 5 of the support leg assembly 1 and is a mechanism that raises the hanging member 2 together with the precast base 30 connected to the hanging member 2 so that the height can be adjusted. At the center of the upper end member 5 of the support leg assembly 1, there is provided a hole 7 through which the hanger 2 can be inserted and whose size can be changed in the horizontal direction. On the upper surface of the upper end member 5, a disk-shaped arbitrary direction movable member 8 having a size capable of sufficiently covering the hole 7 is provided movably in an arbitrary direction in a horizontal plane. The height adjusting mechanism 3 has a male screw member 9 which is screwed in a vertical posture into a screw hole 8a provided substantially at the center of the upper surface of the arbitrary direction movable member 8 and penetrates the lower surface side. The upper ends of the hanging members 2 are rotatably connected to each other at the lower ends of the hanging members. A handle 10 for turning the male screw member 9 is provided at the upper end of the male screw member 9. Thereby, when the male screw member 9 is turned by operating the handle 10, the precast foundation 30 suspended via the suspender 2 and the suspension bolt 33 can be lifted. By adjusting the floating amount by the above operation, the height of the precast base 30 can be adjusted. As described above, the height adjusting mechanism 3 includes the movable member 8 in any direction, the male screw member 9, and the handle 10. In addition, as shown in FIG. 4, since the hanging tool joined portions 31 to which the hanging bolts 33 are screwed are provided at both ends in the long side direction of the precast foundation main body 30 a, these hanging tool joined portions 31 are provided. Correspondingly, as shown in FIG. 5, the two support leg assemblies 1 are arranged on one precast foundation 30, and the position adjustment is performed.

  When the precast base 30 is raised as described above, the operator can push or pull the precast base 30 to adjust the position of the precast base 30 in the horizontal direction. The adjustment mechanism 11 and the long-side direction adjustment mechanism 16 allow horizontal position adjustment.

  The in-and-out direction adjusting mechanism 11 includes a pair of feed screw mechanisms 12, which are located on both sides of the precast base 30 in the direction of the short side with respect to the movable member 8 in the arbitrary direction and can be adjusted in the direction of the short side. 12 is constituted. The feed screw mechanism 12 includes a nut 13 fixed on the upper end member 5, and a male screw member 14 which is screwed to the nut 13 and has a tip facing a side surface of the movable member 8 in any direction. At the rear end of the male screw member 13, a handle 15 for rotating the male screw member 13 is provided. When the male screw member 13 is moved forward by operating the handle 15, the movable member 8 in any direction can be moved in the short side direction by pushing the movable member 8 in the arbitrary direction at the tip thereof. Can be adjusted in the short side direction.

  The long side direction adjusting mechanism 16 includes a pair of feed screw mechanisms 17, 17 positioned on both sides of the precast base 30 in the long side direction with respect to the arbitrary direction movable member 8 and capable of position adjustment in the long side direction. It consists of. These feed screw mechanisms 17 are also composed of a nut 18 fixed on the upper end member 5 and a male screw member 19 screwed to the nut 18 and having a tip facing a side surface of the movable member 8 in any direction. At the rear end of the male screw member 19, a handle 20 for rotating the male screw member 19 is provided. When the male screw member 19 is advanced by operating the handle 20, the arbitrary-direction movable member 8 can be moved in the long side direction by pushing the arbitrary-direction movable member 8 at the tip thereof. Can be adjusted in the long side direction.

  According to the position adjusting jig of the precast foundation having this configuration, since the height adjusting mechanism 3, the entrance / exit direction adjusting mechanism 11, and the long side direction adjusting mechanism 16 are provided on the support leg assembly 1 straddling the precast foundation 30, Position adjustment of the precast base 30 in the vertical direction, the entrance / exit direction, and the long-side direction can be easily performed. In addition, the height adjustment mechanism 3, the entry / exit direction adjustment mechanism 11, and the long side direction adjustment mechanism 16 are all constituted by a feed screw mechanism, and can be adjusted by rotation by operating the handle, so that the adjustment can be performed accurately and more easily. it can. In addition, since the lifting is performed by using the hanging tool coupling portion 31 used for hanging the crane, the precast foundation 30 can be lifted from the ground with a simple configuration.

  In addition, even if it does not have the said in / out direction adjustment mechanism 11 or the long side direction adjustment mechanism 16, and just raised the precast foundation 30 by the said height adjustment mechanism 3, a worker will push the precast foundation 30 in the state which floated in the horizontal direction. Thus, the position adjustment of about 2 to 3 cm is performed, and then the precast base 30 is lowered, so that the position adjustment in the horizontal direction can be easily performed with high accuracy. That is, the precast foundation 30 is lifted by the suspending device 2 provided on the upper end member 5 of the support leg assembly 1 which stands on the precast foundation 30 from above, and is provided on the upper end member 5 of the support leg assembly 1. By raising the precast foundation 30 with the height adjustment mechanism 3, the position of the precast foundation 30 can be accurately adjusted not only in the vertical direction but also in the horizontal direction. However, by providing the entrance / exit direction adjustment mechanism 11 or the long side direction adjustment mechanism 16, the position adjustment in the entrance / exit direction or the long side direction can be performed more easily and accurately.

  FIG. 7 shows another configuration example of the support leg assembly 1 in the position adjustment jig. In the support leg assembly 1, the upper end of the support leg 4 is rotatably connected to the upper end member 5 by a hinge, and, for example, the intermediate portions of the set of support legs 4, 4 straddling the precast base 30. Are connected by a connecting member 21. The connecting member 21 has a base end rotatably supported on one support leg 4 by a support pin 22 with a support pin 22, and a hook portion 21 a provided on a distal end thereof is engaged with an engagement pin 23 provided on the other current leg 4. It is designed to be freely engaged and disengaged. For this reason, by removing the connecting member 21 from the engaging pin 23, the support legs 4 on both sides can be folded, which is convenient for transportation and storage.

8 to 10 show still another embodiment of the present invention. In this embodiment, other configurations and effects particularly described are the same as those in the above embodiment. In this embodiment, the long side direction movable member 8A is installed on the upper surface of the upper end member 5 of the support leg assembly 1 so as to be guided by the guide mechanism 25 so as to be movable in the long side direction of the precast foundation 30. The movable member 8B is installed on the upper surface of the long-side movable member 8A so as to be guided by the guide mechanism 26 so that the movable member 8B is movable in the in-out direction, which is the direction of the short side of the precast base 30. . The hanging member 2 is installed on the movable member 8B in the entry / exit direction via a height adjustment mechanism 3A. As shown in FIG. 9, the guide mechanism 25 of the long side movable member 8A includes a guide pin 25a protruding from the upper surface of the upper end member 5 and a guide long hole 25b provided in the long side movable member 8A. It becomes.
The guide long hole 25b is a long hole extending in the long side direction, and slidably engages with the guide pin 25a. In the illustrated example, the guide mechanisms 25 are provided at four positions located at each corner of the long side movable member 8A. The guide mechanism 26 of the access direction movable member 8B includes a guide pin 26a protruding from the upper surface of the long side direction movable member 5 and a guide elongated hole 26b provided in the access direction movable member 8B. The guide long hole 26b is a long hole extending in the in / out direction, and slidably engages with the guide pin 26a. The guide mechanisms 26 are provided at four positions located at respective corners of the movable member 8B in and out direction.

  As shown in FIG. 8, the long-side movable member 8A and a feed screw mechanism installed on the upper end member 5 so as to be able to adjust the position in the long-side direction so as to be able to push and pull the long-side movable member 8A. 27 constitutes an entrance / exit direction adjusting mechanism 35. As shown in FIG. 9, the feed screw mechanism 27 includes a female screw member 27a fixed to the upper end member 5, and a screw shaft 27b screwed to the female screw member 27a, and a handle 27c is provided at the base end of the screw shaft 27b. Have been. The distal end of the screw shaft 27a is, as shown in FIG. 10, an enlarged engaging head 27ba. The engaging head 27ba rotatably engages with the engaging concave portion 27d of the long side direction movable member 8A. ing.

  In FIG. 8, the movable member 8B in and out direction is provided with a feed screw mechanism 28 which is installed on the movable member 8A in the long side direction so as to be able to push and pull the movable member 8B in and out so as to be adjustable in position in and out. Thus, the entry / exit direction adjusting mechanism 36 is configured. The feed screw mechanism 28 includes a female screw member 28a fixed to the long side direction movable member 8A and a screw shaft 28b screwed to the female screw member 28a, and a handle 28c is provided at the base end of the screw shaft 28b. . The distal end of the screw shaft 28b has a configuration similar to that of the example of FIG. 10 and rotatably engages with the movable member 8B in and out direction.

At the lower end, the hanger 2 has a coupling part 6 detachably connected to the hanger coupling part 31 of the precast foundation 30 via a hanger bolt 33, similarly to the embodiment.
A hole (not shown) through which the wire rope 2a of the hanging tool 2 is inserted is provided in the long side direction member 8A and the in / out direction movable member 8B.

  The height adjusting mechanism 3A has a male screw member 9 which is screwed in a vertical posture into a screw hole 8a provided at a substantially central position on the upper surface of the access direction movable member 8B as shown in FIG. The upper end of the hanging member 2 is rotatably connected to the lower end of the male screw member 9. A handle 10 for turning the male screw member 9 is provided at the upper end of the male screw member 9. The male screw member 9 is inserted through an insertion hole provided in the guide plate 29b in the inclination preventing member 29 including the two axial leg portions 29a and the guide plate 29b at the upper end thereof, which are provided on the movable member 8B in the entry / exit direction. , The inclination is prevented. The guide plate 29b may be provided with the screw hole 8a, and the screw hole 8a directly provided on the movable member 8B may be omitted.

  In the case of this embodiment, the long-side direction movable member 8A and the in-and-out direction movable member 8B are provided separately. However, in such a case, the precast foundation 30 can be more accurately and smoothly moved in and out and in the long-side direction. Position can be adjusted.

In this embodiment, the long side direction is the first direction described in the claims, and the entry / exit direction is the second direction in the claims. Therefore, the long side direction movable member 8A and the long side direction adjustment mechanism 35 are a first direction movable member and a first direction adjustment mechanism, respectively, which are referred to in the claims. The second direction movable member and the second direction adjustment mechanism referred to in the paragraph are provided.
The long-side direction movable member 8A and the in-and-out direction movable member 8B may exchange the upper and lower positional relationship with each other, in which case, the first direction referred to in the claims is the in-out direction, and the second direction is the long-side direction. Become.

DESCRIPTION OF SYMBOLS 1 ... Support leg assembly 2 ... Hanging tool 3 ... Height adjusting mechanism 4 ... Support leg 5 ... Top member 6 ... Connection part 8 ... Any direction movable member 8A ... Long side direction movable member (first direction movable member)
8B: movable member in and out direction (second movable member)
DESCRIPTION OF SYMBOLS 11 ... In / out direction adjustment mechanism 12 ... Feed screw mechanism 16 ... Long side direction adjustment mechanism 17 ... Feed screw mechanism 27, 28 ... Feed screw mechanism 30 ... Precast foundation 31 ... Hanging part joined part 33 ... Hanging bolt 35 ... Long side direction Adjustment mechanism (first direction adjustment mechanism)
36 ... in / out direction adjusting mechanism (second direction adjusting mechanism)

Claims (5)

A position adjusting jig for the precast foundation, which adjusts the position of the precast foundation having the hanging part joined part on the upper surface of the precast foundation main body at the time of construction,
A support leg assembly having a plurality of support legs and an upper end member joined to the upper ends of the plurality of support legs, the support leg assembly being disposed in a self-supporting state over the precast foundation from above,
A suspender having a coupling portion at a lower end detachably coupled to the suspender coupled portion of the precast foundation,
A height adjustment mechanism provided on the upper end member of the support leg assembly to lift the suspender together with the precast foundation coupled to the suspender so that the height can be adjusted,
The height adjustment mechanism has a male screw member provided with a vertical screw hole in a member provided in the upper end member and screwed into the screw hole, and an upper end of the hanging member is provided at a lower end of the male screw member. in but coupled rotatably, said hanging member is one of a wire rope or a plurality concatenated carabiner to present to the coupling portion provided at the lower end of the wire rope or a plurality concatenated carabiner Positioning jig for precast foundation that is composed.   The position adjusting jig of the precast foundation according to claim 1, wherein the precast foundation has a rectangular parallelepiped shape in which a width of a short side of an upper surface is smaller than a height, and the support leg assembly is formed on the precast foundation. Stretching in the direction crossing the long side of the upper surface, an entrance / exit direction adjustment mechanism capable of adjusting the position of the hanger in the direction of entry / exit which is the direction of the short side of the precast foundation is provided on the upper end member. Position adjustment jig.   The position adjusting jig of the precast foundation according to claim 2, wherein a long side direction adjusting mechanism capable of adjusting the position of the hanging tool in the long side direction of the precast base is provided on the upper end member. Utensils.   The position adjusting jig of the precast foundation according to claim 3, wherein the upper end member of the support leg assembly is provided with the screw hole, and the movable member is freely movable in an arbitrary direction in a horizontal plane. Is installed, the entry and exit direction adjustment mechanism is located on both sides in the direction of the short side of the precast foundation with respect to the movable member in the arbitrary direction, the position is freely adjustable in the direction of the short side, and the tip is It is constituted by a pair of feed screw mechanisms that can move by pressing an arbitrary direction movable member, and the long side direction adjusting mechanism is located on both sides in the long side direction of the precast foundation with respect to the arbitrary direction movable member. A position adjusting jig for a precast base, comprising a pair of feed screw mechanisms that can be adjusted in the direction of the long side and that can move by pushing the movable member in any direction at the tip. The position adjusting jig of the precast foundation according to claim 3, wherein the upper end member of the support leg assembly has a first direction and a second direction that are one of the long side direction and the short side direction. A first direction movable member is installed so as to be movable in a first direction of the second direction, and the screw hole is formed on the first direction movable member so as to be movable in the second direction. A movable member in the second direction is installed as
A first direction adjusting mechanism includes the first direction movable member and a feed screw mechanism installed on the upper end member so as to be able to push and pull the first direction movable member so as to be adjustable in position in the first direction. And
A second direction adjusting mechanism including the second direction movable member and a feed screw mechanism installed on the first direction member so as to be capable of adjusting the position in the second direction so as to be able to push and pull the second direction movable member. Is composed,
One of the first direction adjustment mechanism and the second direction adjustment mechanism is the long side direction adjustment mechanism, and the other adjustment mechanism is the entrance / exit direction adjustment mechanism.
Pre-cast foundation positioning jig.

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