JP2018025084A - Formwork plate fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a formwork plate fixture which can efficiently fix a formwork plate in a short time without spending a time and hour to H-steel, and can rigidly fix the formwork plate to the H-steel.SOLUTION: In a formwork plate fixture 10, when a screw rod 13 turns to a clockwise direction, power point parts 15, 22 of first and second turning fixing arms 11, 12 move to the outside of a lateral direction, action fixing points 17, 24 of the first and second turning fixing arms 11, 12 move to the inside of the lateral direction while the first and second turning fixing arms 11, 12 thereby turn with pivot parts 16, 23 as centers, when the screw rod 13 turns to a counterclockwise direction, the power point parts 15, 22 of the first and second turning fixing arms 11, 12 move to the inside of the lateral direction, and the action fixing parts 17, 24 of the first and second turning fixing arms 11, 12 move to the outside of the lateral direction while the first and second turning fixing arms 11, 12 thereby turn with the pivot parts 16, 23 as centers.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a form plate fixing device for removably fixing a form plate used for enforcement of a concrete structure to a shape steel.

  H-shaped steel used for seismic reinforcement is placed in front of the pillars and beams of the existing building (concrete structure), separated by a predetermined distance, and the form is fixed to the flange of the H-shaped steel so that it can be attached and detached. There is a seismic reinforcement method in which a space between steel, a concrete structure and a mold is filled with a cement hardened material such as mortar or concrete, and the H-shaped steel and the concrete structure are integrated.

  Patent Document 1 discloses a seismic reinforcement form-support metal fitting used in the seismic reinforcement method. The frame support metal fitting for seismic reinforcement disclosed in Patent Document 1 includes a main fixing bolt and a sub fixing bolt, and a flange presser that holds the lower flange of the H-shaped steel for seismic reinforcement from the upper surface side by the main fixing bolt and the sub fixing bolt. The member, the formwork support material that supports the weir plate installed in contact with the lower surface of the lower flange of the H-shaped steel via the butter material, and the flange holding member and the base side of the formwork support material are connected to each other. A height that is attached to the connecting member and the formwork support member so that the height can be adjusted, and that supports the H-shaped steel from the lower surface side of the lower flange by adjusting the height and contacting the lower surface of the lower flange of the H-shaped steel. And an adjustment bolt. In this seismic reinforcement mold support bracket, a lower flange, a dam plate, and a butter material of an H-shaped steel are disposed between a flange pressing member and a mold support member via a connecting member.

JP 2012-122227 A

  In order to fix the weir plate to the H-shaped steel using the seismic reinforcement form support bracket disclosed in Patent Document 1, the height adjusting bolt installed on the form support member is rotated, and the weir plate and the butter While ensuring the thickness with the material, the height is adjusted so that the upper surface of the height adjustment bolt contacts the lower surface of the lower flange of the H-shaped steel. Next, the main fixing bolt and the sub-fixing bolt are rotated, and the lower flange of the H-shaped steel is tightened from the upper surface side by these bolts. To fix. This seismic reinforcement mold support bracket consists of a procedure for adjusting the height by rotating the height adjustment bolt, a procedure for interposing a butter material between the mold support material and the dam plate, a main fixing bolt and Procedures for rotating the fixing bolt and fixing the weir plate to the lower flange of the H-shaped steel by the formwork support material are required, and it takes time and effort to fix the weir plate to the H-shaped steel. The shape steel cannot be fixed efficiently in a short time without labor. Also, if the sub-fixing bolt is rotated more than the main fixing bolt, the formwork support material tilts with respect to the lower flange of the H-shaped steel. It is necessary to optimally adjust the tightening degree of the lower flange of the H-shaped steel by the main fixing bolt and the auxiliary fixing bolt.

  An object of the present invention is to provide a form plate fixing device that can fix a form plate to a shape steel in a short time and efficiently, and can firmly fix the form plate to the shape steel. There is to do. Another object of the present invention is to provide a form plate fixing device that can easily fix a form plate to a shape steel without adjusting the tightening degree of the bolt.

  The premise of the present invention for solving the above-mentioned problems is a formwork plate fixing device for removably fixing a formwork plate used for enforcement of a concrete structure to a steel material.

  The feature of the present invention based on the above premise is that the mold plate fixing device includes a force point portion, a fulcrum portion connected to the force point portion, and an action fixing portion connected to the fulcrum portion, which are spaced apart from each other in the horizontal direction and extend in the vertical direction. 1 and 2 swivel fixed arms, a screw member extending in the lateral direction located at the force point of the first and second swivel fixed arms, and laterally located at the fulcrum of the first and second swivel fixed arms And a fulcrum portion of the first turning fixed arm is rotatably connected to a lateral end portion of the supporting member via a first rotation shaft, and the fulcrum portion of the second turning fixed arm is a support member. When the screwing member rotates in either the clockwise direction or the counterclockwise direction in the form plate fixing device, the first end of the mold is fixed to the other end in the horizontal direction via the second rotation shaft. And the power point of the second swivel fixed arm moves laterally outward As a result, the action fixing portions of the first and second swivel fixing arms move inward in the lateral direction while the first and second swivel fixing arms are swung around the fulcrum, and the screwing member is opposite to the clockwise direction. When rotating in the clockwise direction, the force point portion of the first and second turning fixed arms moves inward in the lateral direction, whereby the first and second turning fixed arms turn around the fulcrum portion. However, the action fixing portions of the first and second turning fixed arms are moved laterally outward.

  As an example of the present invention, the screwing member has a lateral one end located on the first turning fixed arm side and a transverse other end located on the second turning fixed arm side. A screw member for screwing either one of the one end in the horizontal direction and the other end in the horizontal direction is installed at one of the force application points of the first swivel fixing arm and the second swivel fixing arm. Then, when the screw member rotates in either the clockwise direction or the counterclockwise direction, the screw member moves from the screw member to either the laterally inward or laterally outward direction. The power point portion of the two swivel fixed arm moves either inward in the lateral direction or outward in the lateral direction.

  As another example of the present invention, the stopper for stopping the turning of one of the first turning fixed arm and the second turning fixed arm is one of the one end in the horizontal direction and the other end in the horizontal direction of the screw member. In the mold plate fixing device installed on one side, when the stopper comes into contact with either the first turning fixed arm or the second turning fixed arm, the turning of the arms stops, and the turning of the arms by the stopper is stopped. When stopping, the action fixing portions of these arms are located laterally outward of the fulcrum portion.

  As another example of the present invention, a threaded member is positioned on the side of the first turning fixed arm and the one end in the lateral direction where the normal screw is formed, and a screw is formed on the side of the second turning fixed arm. A first screw member having a second end portion in the horizontal direction and screwing a positive screw at one end portion in the horizontal direction of the screwing member is installed at a power point portion of the first turning fixed arm, and the horizontal direction of the screwing member A second screw member for screwing the reverse screw at the other end is installed at the power point of the second turning fixed arm, and in the form plate fixing device, the screw member is either in the clockwise direction or the counterclockwise direction. When the rotation member rotates in the horizontal direction, the screw member moves from the first and second screw members to either the inner side in the lateral direction or the outer side in the lateral direction. Move either laterally outward.

  As another example of the present invention, the first and second swivel fixing arms have a plurality of fulcrum portions arranged in the vertical direction, and in the mold plate fixing device, by selecting a predetermined one from these fulcrum portions, The force acting on the action fixing part can be adjusted, and the dimension from the fulcrum part to the action fixing part can be changed.

  As another example of the present invention, in the form plate fixing device, the action fixing portion of the first turning fixed arm is positioned on the outer surface side of one of the flanges of the steel material so that the form plate is fixed to the action fixing portion of the first turning fixing arm. And the outer surface of one flange of the steel material, and the action fixing portion of the second swivel fixing arm is positioned on the outer surface side of the other flange of the steel material to fix the form plate to the action of the second swivel fixing arm. And the screw member is rotated in either the clockwise direction or the counterclockwise direction so that the force point portions of the first and second swivel fixing arms are moved between the first portion and the outer surface of the other flange of the steel material. By moving outward in the lateral direction, the work fixing portion of the first swivel fixing arm is in close contact with the mold plate, and the mold plate is moved between the action fixing portion of the first swivel fixing arm and the outer surface of one of the flanges of the steel material. The second swivel fixed arm is fixed in a sandwiched state. Fixing part is mold plate while in close contact with the mold plate is fixed in a state of being sandwiched between the outer surface of the second turning action fixing portion and a steel material of the other flange of the fixed arm.

  As another example of the present invention, the steel material is H-shaped steel, and in the form plate fixing device, the action fixing portion of the first swivel fixing arm is positioned on the outer surface side of one flange of the H-shaped steel. The plate is disposed between the action fixing portion of the first turning fixed arm and the outer surface of one flange of the H-shaped steel, and the action fixing portion of the second turning fixing arm is placed on the outer surface side of the other flange of the H-shaped steel. After positioning the mold plate between the action fixing portion of the second swivel fixing arm and the outer surface of the other flange of the H-shaped steel, the screw member is either in the clockwise direction or the counterclockwise direction. By rotating it in one direction and moving the force point portions of the first and second swivel fixing arms laterally outward, the action fixing portion of the first swiveling fixing arm is brought into close contact with the mold plate while the mold plate is in the first position. 1 It was sandwiched between the action fixed part of the swivel fixed arm and the outer surface of one flange of the H-section steel. The mold plate is sandwiched between the action fixing portion of the second swivel fixing arm and the outer surface of the other flange of the H-shaped steel while the action fixing portion of the second swivel fixing arm is in close contact with the mold plate. Fixed in state.

  As another example of the present invention, the support member has a recess formed in the center thereof to receive the flanges of the H-shaped steel, and the flanges of the H-shaped steel are spaced apart from each other in the horizontal direction and extend in the vertical direction. It touches the inner edge of the.

  According to the form plate fixing device according to the present invention, when the screwing member rotates in either the clockwise direction or the counterclockwise direction, the force point portions of the first and second turning fixing arms are laterally outward. As a result, the action fixing portions of the first and second swivel fixing arms move inward in the lateral direction while the first and second swivel fixing arms are swung around the fulcrum portion. The mold plate can be fixed between the action fixing portion of the first swivel fixing arm and the outer surface of one of the flanges of the steel by simply rotating in either the turning direction or the counterclockwise direction, The formwork plate can be fixed between the action fixing portion of the second swivel fixing arm and the outer surface of the other flange of the steel material, and the formwork plate can be fixed to the steel material efficiently and in a short time. Can do. The form plate fixing device can firmly fix the form plate to the steel flange by the action fixing portions of the first and second swivel fixing arms, and the steel plate can be fixed to the steel material without adjusting the bolt tightening degree. Can be fixed easily. In the mold plate fixing device, when the screwing member rotates in either the clockwise direction or the counterclockwise direction, the force point portions of the first and second swivel fixing arms move inward in the lateral direction. Since the action fixing portions of the first and second swivel fixing arms are moved laterally outward while the first and second swivel fixing arms are swiveling around the fulcrum portion, the screwing member is rotated clockwise and counterclockwise. Only by rotating to the other of the directions, the fixing of the form plate to the flange of the steel material can be easily released, and the form plate can be easily removed from the flange.

  The screwing member has a lateral end located on the first turning fixed arm side and a transverse other end located on the second turning fixed arm side, the transverse end of the screwing member and the transverse direction. A screw member for screwing either one of the other end portions is installed at one of the power point portions of the first turning fixed arm and the second turning fixed arm, and the screwing member is rotated in the clockwise direction and the counterclockwise direction. When the rotation member rotates in either direction, the force application portion of the first and second swivel fixing arms moves laterally inward and laterally while the screwing member moves from the screw member to either the laterally inward or laterally outward direction. In the mold plate fixing device that moves either outward or outward, when the screwing member is rotated in either the clockwise direction or the counterclockwise direction, the screwing member is moved laterally inward from the screw member. The power point of the first and second swivel fixing arms is laterally moving while moving either laterally outward The first and second swivel fixing arms pivot about the fulcrum, and the action fixing portions of the first and second swivel fixing arms move inward in the lateral direction. Since it moves to either the lateral direction or the lateral direction, the mold plate can be fixed efficiently in a short time without any effort between the working fixing portion of the first swivel fixing arm and the outer surface of one of the steel flanges. The mold plate can be efficiently fixed in a short time without requiring any trouble between the action fixing portion of the second swivel fixing arm and the outer surface of the other flange of the steel material, and the flange of the steel material The form plate can be easily released from the flange, and the form plate can be efficiently removed from the flange in a short time without requiring labor.

  A stopper for stopping the turning of one of the first turning fixed arm and the second turning fixed arm is installed at one of the lateral end and the other lateral end of the screw member, and the stopper is the first. When the swivel fixing arm and the second swivel fixed arm come into contact with each other, the swiveling of these arms stops, and when the swiveling of these arms is stopped by the stopper, the action fixing portions of these arms are located next to the fulcrum portion. The mold plate fixing device located outward in the direction can easily position the action fixing portion of the first swivel fixing arm on the outer surface of one flange of the steel material when it is installed on the steel material. The action fixing portion of the swivel fixing arm can be easily positioned on the outer surface of the other flange of the steel material, and these arms can be efficiently installed in a short time without requiring labor.

  The screw member is located on the first turning fixed arm side and the one end in the horizontal direction is formed with a normal screw, and the screw member is located on the second turning fixed arm side and the reverse screw is formed on the other end in the horizontal direction. A first screw member that is screwed to a positive screw at one end portion in the lateral direction of the screw member is installed at a power point portion of the first turning fixed arm, and a reverse screw at the other end portion in the horizontal direction of the screw member is screwed in When the second screw member is installed at the force point of the second turning fixed arm and the screw member rotates in either the clockwise direction or the counterclockwise direction, the screw member is removed from the first and second screw members. Formwork plate fixing device in which the force point portion of the first and second swivel fixing arms moves either in the lateral direction or in the lateral direction while moving either in the lateral direction or in the lateral direction When the screwing member is rotated in either the clockwise direction or the counterclockwise direction, the screwing member is moved in the first and second directions. The power point portion of the first and second swivel fixing arms moves either in the lateral direction or in the lateral direction while moving from the child member to either the lateral direction inward or the lateral direction outward, As a result, the action fixing portions of the first and second swivel fixing arms move either in the lateral direction or in the lateral direction while the first and second swivel fixing arms are swung around the fulcrum portion. The frame plate can be efficiently fixed in a short time between the working fixing portion of the first swivel fixing arm and the outer surface of one of the flanges of the steel material, and the mold plate can be fixed to the second swivel fixing arm. It can be efficiently fixed in a short time without any effort between the working fixing portion and the outer surface of the other flange of the steel material, and the fixing of the form plate to the flange of the steel material can be easily released, Efficiently and quickly removes the form plate from the flange Succoth can.

  The first and second swivel fixing arms have a plurality of fulcrum parts arranged in the vertical direction, and by selecting a predetermined one from these fulcrum parts, the length of the dimension from the fulcrum part to the action fixing part can be changed. As for the form plate fixing device, the steel material that uses the form plate fixing device has a small separation between the flanges and a small extension from the web, and a small type with a large separation between the flanges, and the extension from the web to the flange. There is a large type with a large size, but by selecting a predetermined one from these fulcrum parts, the dimension from the fulcrum part to the action fixing part can be lengthened or shortened. It can be attached to a small type steel material having a small projecting dimension, and can be attached to a large type steel material having a large flange extension dimension from the web. The mold plate fixing device can be used for both small type steel material and large type steel material, and it is not necessary to prepare two types of it. It is possible to save labor and cost to prepare.

  In the mold plate fixing device, the working fixing portion of the first swivel fixing arm is positioned on the outer surface side of one of the flanges of the steel material, and the mold plate is placed on the outer surface of the working fixing portion of the first swiveling fixing arm and the one flange of the steel material. And the action fixing portion of the second swivel fixing arm is positioned on the outer surface side of the other flange of the steel material, and the form plate is placed between the action fixing portion of the second swiveling fixing arm and the other flange of the steel material. After being disposed between the outer surface and the screw member, the force member of the first and second turning fixed arms is moved laterally outward by rotating the screw member in either the clockwise direction or the counterclockwise direction. Then, while the action fixing portion of the first turning fixed arm is in close contact with the mold plate, the mold plate is fixed in a state sandwiched between the action fixing portion of the first turning fixing arm and the outer surface of one of the flanges of the steel material, The action fixing part of the second swivel fixing arm is in close contact with the formwork plate. Since the formwork plate is fixed in a state of being sandwiched between the action fixing portion of the second swivel fixing arm and the outer surface of the other flange of the steel material, either the clockwise direction or the counterclockwise direction is set to the screw member. The mold plate can be fixed between the action fixing portion of the first swivel fixing arm and the outer surface of one of the flanges of the steel material, and the mold plate can be fixed to the second swivel fixing arm. It can fix between a part and the outer surface of the other flange of steel materials, and can fix a formwork board to steel materials efficiently in a short time without requiring a labor.

  In the form plate fixing device in which the steel material is H-shaped steel, the action fixing portion of the first turning fixed arm is positioned on the outer surface side of one flange of the H shape steel, and the form plate is fixed to the action of the first turning fixing arm. 2 and the outer surface of one of the flanges of the H-shaped steel, the action fixing portion of the second turning fixed arm is positioned on the outer surface side of the other flange of the H-shaped steel, and the mold plate is turned second After being arranged between the action fixing portion of the fixed arm and the outer surface of the other flange of the H-shaped steel, the screwing member is rotated in either the clockwise direction or the counterclockwise direction, and the first and second By moving the power point portion of the swivel fixing arm laterally outward, the work fixing portion of the first swivel fixing arm is in close contact with the mold plate, and the mold plate is in contact with the action fixing portion of the first swivel fixing arm and the H shape. Fixed in a state sandwiched between the outer surfaces of one of the flanges of the steel, Since the fixing part is in close contact with the mold plate, the mold plate is fixed in a state sandwiched between the action fixing part of the second swivel fixing arm and the outer surface of the other flange of the H-shaped steel. The mold plate can be fixed between the action fixing portion of the first swivel fixing arm and the outer surface of one flange of the H-shaped steel simply by rotating in either the clockwise direction or the counterclockwise direction. In addition, the mold plate can be fixed between the action fixing portion of the second swivel fixed arm and the outer surface of the other flange of the H-shaped steel, and the mold plate can be shortened to the H-shaped steel without requiring labor. Can be fixed efficiently in time.

  A mold plate in which a support member is formed at the center thereof and has a recess in which the flanges of the H-section steel are accommodated, and the flanges of the H-section steel are in contact with the inner edge of the recess extending in the vertical direction while being spaced apart from each other in the lateral direction. The fixing device fits the support member and the flanges of the H-shaped steel to each other by the flanges of the H-shaped steel being received in the recess formed in the center of the support member and the flanges contacting the inner edge of the recess. The H-shaped steel can be fixed in a state where no large gap is generated between the first and second swivel fixing arms and the supporting members of the mold plate fixing device and the flanges of the H-shaped steel. It is possible to stably fix the mold plate.

The perspective view of the formwork board fixing fixture shown as an example. The front view of a formwork board fixing instrument. The side view of the formwork board fixing tool shown from the 1st turning fixed arm side. The side view of the formwork board fixing tool shown from the 2nd turning fixed arm side. The front view of the formwork board fixing instrument of the state which the power point part of the 1st and 2nd turning fixed arm moved to the horizontal direction outward. The perspective view of the formwork board fixing fixture shown in the state installed in H-section steel. The front view of the formwork board fixture shown in the state installed in H-section steel. The front view of the formwork board fixing fixture shown as another example. The side view of the formwork board fixing tool shown from the 1st turning fixed arm side. The side view of the formwork board fixing tool shown from the 2nd turning fixed arm side. The front view of the formwork board fixing instrument of the state which the power point part of the 1st and 2nd turning fixed arm moved to the horizontal direction outward. The perspective view of the formwork board fixing fixture shown in the state installed in H-section steel. The front view of the formwork board fixture shown in the state installed in H-section steel.

  The details of the form plate fixing device according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1 which is a perspective view of the form plate fixing device 10A shown as an example. 2 is a front view of the mold plate fixing device 10A, and FIG. 3 is a side view of the mold plate fixing device 10A shown from the first turning fixed arm 11 side. FIG. 4 is a side view of the mold plate fixing device 10A shown from the second turning fixed arm 12 side, and FIG. 5 shows that the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 are in the lateral direction. It is a front view of the formwork board fixture 10 in the state of moving outward. In FIG. 1, the vertical direction (vertical direction) is indicated by an arrow A, the horizontal arrow B, and the front-rear direction is indicated by an arrow C.

  As an example, the form plate fixing device 10A (including the form plate fixing device 10B) is an earthquake-resistant reinforcement that integrates an H-shaped steel (steel material), which will be described later, and columns and beams of an existing building (concrete structure). Is used to fix the form plate to the H-shaped steel. Note that the mold plate fixing device 10A (including the mold plate fixing device 10B) is not limited to H-shaped steel, but I-shaped steel, T-shaped steel, angle steel, groove-shaped steel, and Z-shaped steel. It can also be used for fixing. The steel material includes not only the shape steel but also various steel braces and various additional frames. The mold plate fixing device 10A is formed of a first turning fixed arm 11 and a second turning fixed arm 12, a screw rod 13 (screw member) and a support plate 14 (support member).

  The first turning fixed arm 11 is spaced apart from the second turning fixed arm 12 by a predetermined distance in the lateral direction, and extends in the vertical direction in parallel with the second turning fixed arm 12. The first turning fixed arm 11 is connected to the fulcrum part 15, the fulcrum part 16 connected to the force application part 15 and positioned below the force application part 15 in the vertical direction, and the fulcrum part 16 positioned below the fulcrum part 16. And an action fixing portion 17. The force point portion 15 is located in the upper end region 18 of the first turning fixed arm 11, and the fulcrum portion 16 is located in the intermediate region 19 of the first turning fixed arm 11. The action fixing portion 17 is located in the lower region 20 of the first turning fixed arm 11.

  As shown in FIG. 3, the first turning fixed arm 11 includes a first arm member 21 a having an L-shaped cross section and a second arm member 21 b having an L-shaped cross section that is spaced apart and opposed to the rear from the first arm member 21 a. Is formed. A space 22 extending in the vertical direction is formed between the first arm member 21a and the second arm member 21b. The first arm member 21a is made of a metal such as steel, aluminum, and stainless steel, and is connected to a first contact portion 23a that protrudes in the front-rear direction and extends in the vertical direction, and a side edge of the first contact portion 23a. And a first reinforcing portion 23b extending in the vertical direction. The first contact portion 23a and the first reinforcement portion 23b are integrally formed. The second arm member 21b is made of a metal such as steel, aluminum, or stainless steel, and is connected to a second contact portion 24a that extends in the front-rear direction and extends in the vertical direction, and a side edge of the second contact portion 24a, and is in a lateral direction. And a second reinforcing portion 24b extending in the vertical direction. The second contact portion 24a and the second reinforcement portion 24b are integrally formed.

  In the space 22, a plurality of connecting pieces 25 for connecting the first reinforcing portion 23b of the first arm member 21a and the second reinforcing portion 24b of the second arm member 21b are arranged. These connecting pieces 25 are arranged at a predetermined distance in the vertical direction, are arranged at the force point portion 15, the fulcrum portion 16, and the action fixing portion 17, and are welded and fixed to the first reinforcing portion 23b and the second reinforcing portion 24b. Yes. A nut 26 (screw member) is welded and fixed to the space 22 at the position of the force point portion 15 and inside the first turning fixed arm 11 facing the second turning fixed arm 12. The first reinforcing portion 23b and the second reinforcing portion 24b in the fulcrum portion 16 are provided with a rotary shaft first insertion hole 27 and a rotary shaft second insertion hole 28 arranged in the vertical direction. The rotation shaft second insertion hole 28 is formed below the rotation shaft first insertion hole 27 in the vertical direction.

  The second turning fixed arm 12 is spaced apart from the first turning fixed arm 11 by a predetermined distance in the lateral direction, and extends in the vertical direction in parallel with the first turning fixed arm 11. The second turning fixed arm 12 has the same shape and size as the first turning fixed arm 11, and the length dimension thereof is the same as that of the first turning fixed arm 11. The second turning fixed arm 12 is connected to the fulcrum part 29, the fulcrum part 30 that is located below the force application part 29 in the vertical direction and connected to the force application part 29, and the fulcrum part 30 that is located below the fulcrum part 30 in the vertical direction. And an action fixing portion 31. The force point portion 29 is located in the upper end region 32 of the second turning fixed arm 12, and the fulcrum portion 30 is located in the intermediate region 33 of the second turning fixed arm 12. The action fixing portion 31 is located in the lower region 34 of the second turning fixed arm 12.

  As shown in FIG. 4, the second turning fixed arm 12 includes a first arm member 35a having an L-shaped cross section and a second arm member 35b having an L-shaped cross section facing away from the first arm member 35a. Is formed. A space 36 extending in the vertical direction is formed between the first arm member 35a and the second arm member 35b. The first arm member 35a is made of a metal such as a steel material, aluminum, or stainless steel, and is connected to a first abutting portion 37a that extends in the front-rear direction and extends in the longitudinal direction, and a side edge of the first abutting portion 37a. And a first reinforcing portion 37b extending in the vertical direction. The first contact portion 35a and the first reinforcement portion 35b are integrally formed. The second arm member 35b is made of a metal such as steel, aluminum, or stainless steel, and is connected to a second contact portion 38a that extends in the front-rear direction and extends in the vertical direction, and a side edge of the second contact portion 38a. And a second reinforcing portion 38b extending in the vertical direction. The second contact portion 38a and the second reinforcing portion 38b are integrally formed.

  In the space 36, a plurality of connecting pieces 39 for connecting the first reinforcing portion 37b of the first arm member 35a and the second reinforcing portion 38b of the second arm member 35b are arranged. The connecting pieces 39 are arranged in the vertical direction with a predetermined distance, are arranged at the force point portion 29, the fulcrum portion 30, and the action fixing portion 31, and are welded and fixed to the first reinforcing portion 37b and the second reinforcing portion 38b. Yes. In the space 36 at the position of the force point portion 29, an insertion hole 40 that opens between the connecting pieces 39 is formed. The first reinforcing portion 37b and the second reinforcing portion 38b in the fulcrum portion 30 are provided with a rotating shaft first insertion hole 41 and a rotating shaft second insertion hole 42 arranged in the vertical direction. The rotation shaft second insertion hole 42 is formed below the rotation shaft first insertion hole 41 in the vertical direction.

  The screw rod 13 (screw member) is located at the force point 15 of the first turning fixed arm 11 and the force point 29 of the second turning fixed arm 12 and extends in the lateral direction. The screw rod 13 is a bar that is long in the lateral direction, and is made of a metal such as steel, aluminum, or stainless steel. The screw rod 13 includes a lateral end portion 43 located on the first turning fixed arm 11 side, a transverse other end portion 45 located on the second turning fixed arm 12 side, and end portions 43, 45. And an intermediate portion 44 located therebetween. The screw rod 13 is formed with a screw in its entirety (lateral one end portion 43, intermediate portion 44, lateral other end portion 45). In addition, the screw should just be formed in the horizontal direction one end part 43 and the horizontal direction other end part 45. FIG.

  One end portion 43 in the lateral direction of the screw rod 13 is inserted into the space 22 of the force application portion 15 of the first turning fixed arm 11 and is screwed into the nut 26 communicating with the space 22. A wrench 46 fitted into a drill bit (socket wrench) of an electric drill is formed in a portion of the lateral end portion 43 of the screw rod 13 that extends laterally outward from the force application portion 15 of the first turning fixed arm 11. Is formed.

  A stopper 47 (nut) is welded and fixed to a portion of the other end portion 45 in the lateral direction of the screw rod 13 that extends inward in the lateral direction from the power point portion 29 of the second turning fixed arm 12. A portion of the other end portion 45 in the lateral direction of the screw rod 13 that extends laterally outward from the stopper 47 is inserted into an insertion hole 40 that is positioned at the force application portion 29 of the second turning fixed arm 12. A retaining pin 48 is attached to a portion of the other end portion 45 in the lateral direction of the screw rod 13 that extends laterally outward from the force application portion 29 of the second turning fixed arm 12. The intermediate portion 44 of the screw rod 13 is located between the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 and extends in a straight line in the lateral direction.

  The support plate 14 (support member) is located between the fulcrum part 16 of the first turning fixed arm 11 and the fulcrum part 30 of the second turning fixed arm 12 and extends in the lateral direction. The support plate 14 is a plate material that is long in the lateral direction, and is made of metal such as steel, aluminum, and stainless steel. The support plate 14 has a lateral end 49 located on the first turning fixed arm 11 side, a transverse other end 51 located on the second turning fixed arm 12 side, and the end portions 49, 51. And an intermediate portion 50 located at the center.

  A concave portion 52 that is convex upward in the vertical direction is formed in the intermediate portion 50 of the support plate 14. The recess 52 has a pair of inner edges 53 that extend in the vertical direction while being spaced apart from each other in the horizontal direction, and an inner end edge 54 that extends in the horizontal direction between the inner edges 53. These inner edges 53 are inclined in a divergent manner so that the distance from each other gradually increases from the inner edge 54 in the longitudinally downward direction. Accordingly, the lateral spacing of the inner edges 53 is small at the inner edge 54 and gradually increases from the inner edge 54 downward in the vertical direction. A rotation shaft third insertion hole 55 is perforated at one end 49 in the lateral direction of the support plate 14, and a rotation shaft fourth insertion hole 56 is perforated at the other end 51 in the lateral direction of the support plate 14.

  The rotation shaft second insertion hole 28 drilled in the fulcrum 16 of the first turning fixed arm 11 and the rotation shaft third insertion hole 55 drilled in the lateral end 49 of the support plate 14 coincide with each other. The first rotation shaft 57 (first rotation bolt) is inserted into the two insertion holes 28 and the rotation shaft third insertion hole 55, and the fulcrum portion 16 of the first turning fixed arm 11 is connected to the lateral end portion 49 of the support plate 14. The first rotary shaft 57 is connected to be rotatable (turnable). The fulcrum portion 16 of the first turning fixed arm 11 is positioned at the rotation shaft second insertion hole 28.

  The rotation shaft second insertion hole 42 drilled in the fulcrum 30 of the second turning fixed arm 12 and the rotation shaft fourth insertion hole 56 drilled in the other lateral end 51 of the support plate 14 coincide with each other, and the rotation shaft The second rotating shaft 58 (second rotating bolt) is inserted into the second insertion hole 42 and the rotation shaft fourth insertion hole 56, and the fulcrum portion 30 of the second turning fixed arm 12 is the other lateral end of the support plate 14. 51 is connected via a second rotating shaft 58 so as to be rotatable (turnable). The fulcrum portion 30 of the second turning fixed arm 12 is positioned at the rotation shaft second insertion hole 42.

  In the mold plate fixing device 10A, when the screw rod 13 rotates in the clockwise direction, one end in the lateral direction of the screw rod 13 screwed to the nut 26 (screw member) of the power point portion 15 of the first turning fixed arm 11 is obtained. The portion 43 gradually moves (extends) laterally outward from the nut 26, and the force application points 15, 29 of the first and second turning fixed arms 11, 12 move laterally outward (first and second turning fixed arms). 11 and 12 are gradually moved in the direction in which the force point portions 15 and 29 are separated from each other. Thereby, the first and second turning fixed arms 11 and 12 turn around the fulcrum portions 16 and 30 (first and second rotating shafts 57 and 58), and the first and second turning fixed arms 11 and 12 are rotated. The action fixing parts 17 and 31 gradually move inward in the lateral direction (direction in which the action fixing parts 17 and 31 of the first and second turning and fixing arms 11 and 12 approach each other).

  Conversely, when the screw rod 13 rotates counterclockwise, the one end 43 in the horizontal direction of the screw rod 14 screwed to the nut 26 of the power point portion 15 of the first turning fixed arm 11 is moved inwardly from the nut 26. The force application points 15 and 29 of the first and second turning fixed arms 11 and 12 are laterally inward (the force application parts 15 and 29 of the first and second turning fixed arms 11 and 12). Gradually move toward each other). Thereby, the first and second turning fixed arms 11 and 12 turn around the fulcrum portions 16 and 30 (first and second rotating shafts 57 and 58), and the first and second turning fixed arms 11 and 12 are rotated. The action fixing portions 17 and 31 gradually move outward in the lateral direction (the direction in which the action fixing portions 17 and 31 of the first and second turning and fixing arms 11 and 12 are separated from each other).

  FIG. 6 is a perspective view of the mold plate fixing device 10A shown in a state of being installed on the H-shaped steel 59a. FIG. 7 is a front view of the mold plate fixing device 10A shown in a state of being installed on the H-shaped steel 59a. In FIG. 6, the clockwise direction is indicated by an arrow D1, and the counterclockwise direction is indicated by an arrow D2. The procedure for installing and fixing the mold plates 60a and 60b to the H-shaped steel 59a (shaped steel) using the mold plate fixing tool 10A is as follows. The H-shaped steel 59a is a small type in which the distance between the flanges 61a and 61b is small and the extension of the flanges 61a and 61b from the web 62 is small.

  When the mold plates 60a and 60b are fixed to the H-shaped steel 59a, as shown in FIG. 1, the power plate portions 15 and 29 of the first and second pivot fixing arms 11 and 12 The force application parts 15 and 29 approach each other in the direction and the action fixing parts 17 and 31 of the first and second swivel fixing arms 11 and 12 move outward in the lateral direction to cause the action fixing parts 17 and 31 to move. The lateral dimension between the force application points 15 and 29 of the first and second swivel fixing arms 11 and 12 is separated and the lateral dimension between the action fixing portions 17 and 31 of the first and second swivel fixing arms 11 and 12 is separated. It is smaller than the dimension in the direction.

  In the mold plate fixing device 10A before being installed on the H-shaped steel 59a, the stopper 47 abuts on the second turning fixed arm 12, and further turning of the arms 11 and 12 is stopped. When the turning of the arms 11, 12 is stopped by the stopper 47, the first and second turning fixed arms 11, 12 draw a cross-section, and the action fixing parts 17, 31 of the arms 11, 12 are the fulcrum parts 16. 30 and the force point portions 17 and 31 are located laterally outward.

  First, the action fixing portion 17 of the first turning fixed arm 11 is positioned on the outer surface side of one flange 61a of the H-shaped steel 59a, and one mold plate 60a is connected to the action fixing portion 17 of the first turning fixing arm 11. It arrange | positions between the outer surfaces of one flange 61a of the H-shaped steel 59a, the action fixing | fixed part 31 of the 2nd turning fixed arm 12 is located in the outer surface side of the other flange 61b of the H-shaped steel 59a, and the other formwork The plate 60b is disposed between the action fixing portion 31 of the second turning fixed arm 12 and the outer surface of the other flange 61b of the H-shaped steel 59a.

  The dimension between the inner edges 53 of the recesses 52 of the support plate 14 (the dimension in the lateral direction of the inner edge 53) is substantially the same as the distance between the outer surfaces of the flanges 61a and 61b of the H-shaped steel 59a. When the action fixing portions 17 and 31 of the second swivel fixing arms 11 and 12 are arranged on the outer surfaces of the flanges 61a and 61b of the H-shaped steel 59a, the flanges 61a and 61b of the H-shaped steel 59a are supported by the support plate of the mold plate fixing device 10A. 14, the flanges 61 a and 61 b of the H-shaped steel 59 a abut against the inner edge 53 of the recess 52. Even when the accuracy of the H-shaped steel 59a is small and the distance between the outer surfaces of the flanges 61a and 61b varies, the inner edge 53 of the support plate 14 extends downward from the inner edge 54 of the support plate 14 in the vertical direction. As the distance between the inner edges 53 gradually increases, the lateral distance between the inner edges 53 decreases at the inner edge 54 and gradually increases from the inner edge 54 downward in the vertical direction. Therefore, the flanges 61 a and 61 b of the H-shaped steel 59 a can be securely fitted into the recess 52 of the support plate 14.

  Next, a drill bit of an electric drill (not shown) is fitted into a wrench 46 formed at one end 43 in the lateral direction of the screw rod 13 and screwed using the electric drill as shown by an arrow D1 in FIG. The landing rod 13 is rotated in the clockwise direction. When the screw rod 13 is rotated in the clockwise direction, the one end portion 43 in the horizontal direction of the screw rod 13 screwed to the nut 26 (screw member) located at the force point portion 15 of the first turning fixed arm 11 is horizontal. The power point portions 15 and 29 of the first and second turning fixed arms 11 and 12 gradually move outward in the lateral direction.

  The first and second turning fixed arms 11 and 12 turn around the fulcrum parts 16 and 30 by moving the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 laterally outward. However, the action fixing portions 17 and 31 of the first and second turning fixed arms 11 and 12 gradually move inward in the lateral direction, and the action fixing portion 17 (first and second abutment) of the first turning fixed arm 11 is moved. While the portions 23a, 24a) are in close contact with the outer surface of one mold plate 60a, the inner surface of the mold plate 60a is in close contact with the outer surface of one flange 61a of the H-shaped steel 59a, and the one mold plate 60a is the first. It fixes in the state pinched | interposed into the action fixing | fixed part 17 (1st and 2nd contact part 23a, 24a) of the 1 turning fixed arm 11, and the outer surface of one flange 61a of the H-shaped steel 59a.

  Further, the action fixing portion 31 (first and second contact portions 37a, 38a) of the second turning fixed arm 12 is in close contact with the outer surface of the other mold plate 60b, and the inner surface of the mold plate 60b is H-shaped. The other mold plate 60b is in close contact with the outer surface of the other flange 61b of the steel 59a, and the action fixing portion 31 (first and second abutting portions 37a, 38a) of the second turning fixed arm 12 and the H-shaped steel 59a. It is fixed in a state sandwiched between the outer surfaces of the other flange 61b. When the mold plates 60a and 60b are fixed to the H-shaped steel 59a, as shown in FIG. 5, the lateral dimension between the force application points 15 and 29 of the first and second swivel fixing arms 11 and 12 is the first. The lateral dimension between the action fixing portions 17, 31 of the first and second swivel fixing arms 11, 12 is larger than the lateral dimension, and the power point portion 31 of the second swivel fixing arm 12 is the other lateral end of the screw rod 13. It is spaced laterally outward from a stopper 47 fixed to 45.

  The fulcrum portions 16 and 30 of the first and second swivel fixing arms 11 and 12 are positioned at the rotary shaft second insertion holes 28 and 42 drilled in the arms 11 and 12, and the action fixing portions are moved from the fulcrum portions 16 and 30. The dimensions up to 17 and 31 are shortened, and the form plate fixing device 10 </ b> A attached to the small H-shaped steel 59 a having a small extension dimension of the flanges 61 a and 61 b from the web 62 can be obtained. When the rotation of the arms 11 and 12 is stopped by the stopper 47, the action fixing portions 17 and 31 of the arms 11 and 12 are located laterally outward of the force point portions 15 and 29 and the fulcrum portions 16 and 30. When the mold plate fixing device 10A is installed on the H-shaped steel 59a, the action fixing portion 17 of the first turning fixed arm 11 can be easily positioned on the outer surface of one flange 61a of the H-shaped steel 59a. The action fixing portion 31 of the two swivel fixing arm 12 can be easily positioned on the outer surface of the other flange 61b of the H-shaped steel 59a, and the arms 11 and 12 can be easily moved to the H-shaped steel 59a in a short time. It can be installed efficiently.

  The flanges 61 a and 61 b of the H-shaped steel 59 a are accommodated in the recess 52 formed in the center of the support plate 14 (support member), and the flanges 61 a and 61 b abut on the inner edge 53 of the recess 52, whereby the support plate 14. And the flanges 61a and 61b of the H-shaped steel 59a can be fixed in a state of being fitted to each other, and the first and second swivel fixing arms 11 and 12 and the support plate 14 of the mold plate fixing device 10A Large gaps are not generated between the flanges 61a and 61b of the H-shaped steel 59a, and the mold plates 60a and 60b can be stably fixed to the H-shaped steel 59a.

  After fixing the mold plates 60a and 60b to the flanges 61a and 61b of the H-shaped steel 59a using the mold plate fixing device 10A, concrete (not shown) is placed in the space 63 between the mold plates 60a and 60b. To cast. After the curing period of the concrete placed in the space 63 has passed and the concrete has hardened, the mold plates 60a and 60b are removed from the H-shaped steel 59a. An example of the procedure for removing the mold plates 60a and 60b from the H-shaped steel 59a is as follows. In the state of FIGS. 6 and 7 in which the mold plates 60a and 60b are fixed to the H-shaped steel 59a, the drill bit of the electric drill is fitted into the wrench 46 formed at the one end 43 in the lateral direction of the screw rod 13. Is used to rotate the screw rod 13 counterclockwise. When the screw rod 13 is rotated in the counterclockwise direction, the one end 43 in the horizontal direction of the screw rod 13 screwed to the nut 19 located at the force point portion 15 of the first turning fixed arm 11 is inward in the horizontal direction. It gradually moves, and the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 gradually move inward in the lateral direction.

  The first and second turning fixed arms 11 and 12 turn around the fulcrum parts 16 and 30 by moving the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 inward in the lateral direction. However, the action fixing portions 17 and 31 of the first and second turning fixed arms 11 and 12 move gradually outward in the lateral direction, and the action fixing portion 17 of the first turning and fixing arm 11 moves to the one mold plate 60a. It moves in a direction away from the outer surface, and the close contact state of the inner surface of one mold plate 60a with the outer surface of one flange 61a of the H-shaped steel 59a is released, and the fixed state of the one mold plate 60a to the flange 61a is released. Is done.

  Further, the action fixing portion 31 of the second turning fixed arm 12 moves away from the outer surface of the other mold plate 60b, and the inner surface of the other mold plate 60b with respect to the outer surface of the other flange 61b of the H-shaped steel 59a. Is released, and the fixing state of the other mold plate 60b to the flange 61b is released. After the fixed state of the mold plates 60a, 60b with respect to the flanges 61a, 61b is released, the mold plate fixing device 10A is removed from the mold plates 60a, 60b, and the mold frames are removed from the concrete (flanges 61a, 61b). Remove the plates 60a, 60b.

  The mold plate fixing device 10A rotates the screwing rod 13 (screwing member) in the clockwise direction to move the force application points 15 and 29 of the first and second swivel fixing arms 11 and 12 laterally outward. Thus, the first and second turning fixed arms 11 and 12 turn around the fulcrum parts 16 and 30, and the action fixing parts 17 and 31 of the first and second turning fixed arms 11 and 12 move inward in the lateral direction. The work fixing part 17 of the first turning fixed arm 11 moves and the work fixing part 17 is in close contact with the form plate 60a, while the form plate 60a is connected to the action fixing part 17 of the first turning fixed arm 11 and one flange 61a of the H-shaped steel 59a. The work fixing part 31 of the second turning fixed arm 12 is fixed to the outer surface, and the work fixing part 31 of the second turning fixed arm 12 is in close contact with the form plate 60b, while the mold plate 60b is in contact with the action fixing part 31 of the second turning fixed arm 12. The outer surface of the other flange 61b of the steel 59a Since it is fixed in the sandwiched state, the mold plate 60a can be moved to the action fixing portion 17 of the first turning fixed arm 12 and one flange 61a of the H-shaped steel 59a only by rotating the screw rod 13 clockwise. The mold plate 60b can be fixed between the action fixing portion 31 of the second turning fixed arm 12 and the outer surface of the other flange 61b of the H-shaped steel 59a. . The mold plate fixing device 10A can fix the mold plates 60a, 60b to the H-shaped steel 59a efficiently in a short time without any trouble, and the operation of the first and second swivel fixing arms 11, 12. The mold plates 60a and 60b can be firmly fixed to the flanges 61a and 61b of the H-shaped steel 59a by the fixing portions 17 and 31.

  The mold plate fixing device 10A rotates the screw rod 13 in the counterclockwise direction and moves the force application portions 15 and 29 of the first and second swivel fixing arms 11 and 12 inward in the lateral direction. Since the first and second turning fixed arms 11 and 12 turn around the fulcrum parts 16 and 30, the action fixing parts 17 and 31 of the first and second turning fixed arms 11 and 12 move laterally outward. By simply rotating the screw rod 13 counterclockwise, the fixing of the mold plates 60a, 60b to the flanges 61a, 61b of the H-shaped steel 59a can be easily released, and the mold plates can be released from the flanges 61a, 61b. 60a and 60b can be easily removed.

  The mold plate fixing device 10A includes first and second abutting portions 23a and 24a of the first and second arm members 21a and 21b and first and second abutting portions of the first and second arm members 35a and 35b. Even if a stress acts on 37a and 38a, the first and second arm members 21a and 21b forming the first turning fixed arm 11 have the first and second reinforcing portions 23b and 24b, and the second turning fixed arm. Since the first and second arm members 35a, 35b forming the first member 12 have first and second reinforcing portions 37b, 38b, the reinforcing portions 23b, 24b, 37b, 38b are first and second arm members 21a, 21b. , 35a, 35b, the deformation of the first and second contact portions 23a, 24a, 37a, 38a can be prevented, and the first and second swivel fixing arms 1 can be prevented. Can be fixed 12 formwork plate 60a by the action fixing portions 17, 31 of the 60b flange 61a of the H-shaped steel 59a, the firmly and reliably 61b.

  FIG. 8 is a front view of a form plate fixing device 10B shown as another example, and FIG. 9 is a side view of the form plate fixing device 10B shown from the first turning fixing arm 11 side. FIG. 10 is a side view of the mold plate fixing device 10B shown from the second turning fixed arm 12 side. FIG. 11 shows that the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 are in the lateral direction. It is a front view of the formwork board fixture 10B in a state of moving outward.

  1 differs from that in FIG. 1 in that the length of the support plate 14 (support member) in the lateral direction is large, the first rotation hole 27 and the third rotation hole 55. The first rotary shaft 57 is inserted through the rotary shaft first insertion hole 41 and the rotary shaft fourth insertion hole 56 through which the second rotary shaft 58 is inserted. Since the other configuration of the mold plate fixing device 10B is the same as that of FIG. 1, the same reference numerals as those of the mold plate fixing device 10A of FIG. 1 are used, and the description of the mold plate fixing device 10A of FIG. Thus, the detailed description of the other configuration of the form plate fixing device 10B is omitted. The mold plate fixing device 10B is formed of a first turning fixed arm 11 and a second turning fixed arm 12, a screw rod 13 (screw member) and a support plate 14 (support member).

  The first swivel fixing arm 11 is the same as that of the mold plate fixing device 10A of FIG. 1, and includes a force point portion 15, a fulcrum portion 16 positioned below the force point portion 15 in the vertical direction, and a vertical direction below the fulcrum portion 16. And the action fixing portion 17 located in the position. A nut 26 (screw member) is welded and fixed to the space 22 at the position of the force point portion 15 and inside the first turning fixed arm 11 facing the second turning fixed arm 12. In the first reinforcement member 23b of the first arm member 21a and the second reinforcement member 24b of the second arm member 21b in the fulcrum part 16, a rotary shaft first insertion hole 27 and a rotation shaft second insertion hole 28 are arranged in the vertical direction. And are perforated.

  The second swivel fixing arm 12 is the same as that of the mold plate fixing device 10A of FIG. 1, and includes a force point portion 29, a fulcrum portion 30 located below the force point portion 29 in the vertical direction, and a vertically lower side of the fulcrum portion 30. And an action fixing portion 31 located at the position. In the space 36 at the position of the force point portion 29, an insertion hole 40 that opens between the connecting pieces 39 is formed. The first reinforcing member 37b of the first arm member 35a and the second reinforcing member 38b of the first arm member 35a in the fulcrum part 30 are respectively provided with a rotary shaft first insertion hole 41 and a rotary shaft second insertion hole 42 arranged in the vertical direction. Is perforated.

  The screw rod 13 (screw member) is the same as that of the mold plate fixing device 10A of FIG. 1, and is located at the force point portion 15 of the first turning fixed arm 11 and the force point portion 29 of the second turning fixed arm 12. And it extends straight in the lateral direction. The screw rod 13 includes a lateral end portion 43 and a lateral end portion 45, and an intermediate portion 44 positioned between the end portions 43, 45, and a screw is formed in the whole.

  One end portion 43 in the lateral direction of the screw rod 13 is inserted into the space 22 of the force application portion 15 of the first turning fixed arm 11 and is screwed into the nut 26 communicating with the space 22. A stopper 47 (nut) is welded and fixed to a portion of the other end portion 45 in the lateral direction of the screw rod 13 that extends inward in the lateral direction from the power point portion 29 of the second turning fixed arm 12. A portion of the other end portion 45 in the lateral direction of the screw rod 13 that extends laterally outward from the stopper 47 is inserted into an insertion hole 40 that is positioned at the force application portion 29 of the second turning fixed arm 12.

  The support plate 14 (support member) has a lateral length longer than that of the mold plate fixing device 10 </ b> A of FIG. 1, and the fulcrum part 16 of the first turning fixed arm 11 and the supporting point of the second turning fixed arm 12. It is located between the parts 30 and extends in the lateral direction. The support plate 14 is formed between the end portions 49, 51, between the end portions 49, 51, and the one end portion 49 in the transverse direction in which the third rotation shaft insertion hole 55 is formed. And an intermediate portion 50 located. A concave portion 52 having an inner edge 53 and an inner edge 54 and projecting upward in the vertical direction is formed in the intermediate portion 50 of the support plate 14. These inner edges 53 are inclined in a divergent manner so that the distance from each other gradually increases from the inner edge 54 in the longitudinally downward direction. Accordingly, the lateral spacing of the inner edges 53 is small at the inner edge 54 and gradually increases from the inner edge 54 downward in the vertical direction.

  The rotation shaft first insertion hole 27 drilled in the fulcrum 16 of the first turning fixed arm 11 and the rotation shaft third insertion hole 55 drilled in the lateral end 49 of the support plate 14 coincide with each other. The first rotation shaft 57 is inserted into the first insertion hole 27 and the rotation shaft third insertion hole 55, and the fulcrum portion 16 of the first turning fixed arm 11 is attached to the lateral end portion 49 of the support plate 14. It is connected so that rotation (turning) is possible. The fulcrum portion 16 of the first turning fixed arm 11 is located at the position of the rotary shaft first insertion hole 27.

  The rotation shaft first insertion hole 41 drilled in the fulcrum part 30 of the second turning fixed arm 12 and the rotation shaft fourth insertion hole 56 drilled in the other lateral end 51 of the support plate 14 coincide with each other. The second rotation shaft 58 is inserted into the first insertion hole 41 and the rotation shaft fourth insertion hole 56, and the fulcrum portion 30 of the second turning fixed arm 12 is connected to the other end 51 in the lateral direction of the support plate 14. Via 58, it is connected so that rotation (turning) is possible. The fulcrum part 30 of the second turning fixed arm 12 is located at the position of the rotary shaft first insertion hole 41.

  FIG. 12 is a perspective view of the mold plate fixing device 10B shown in a state of being installed on the H-shaped steel 59b, and FIG. 13 is a front view of the mold plate fixing device 10B shown in a state of being installed on the H-shaped steel 59b. is there. In FIG. 12, the clockwise direction is indicated by an arrow D1, and the counterclockwise direction is indicated by an arrow D2. The procedure for installing and fixing the mold plates 60a and 60b to the H-shaped steel 59b (shaped steel) using the mold plate fixing device 10B is as follows. The H-section steel 59b is a large type in which the distance between the flanges 61a and 61b is larger and the extension dimension of the flanges 61a and 61b from the web 62 is larger than the H-section steel 59a.

  The action fixing part 17 of the first turning fixed arm 11 is positioned on the outer surface side of one flange 61a of the H-shaped steel 59b, and the one mold plate 60a is connected to the action fixing part 17 of the first turning fixed arm 11 and the H-shaped steel. 59b is disposed between the outer surface of one flange 61a of the 59b, the action fixing portion 31 of the second turning fixed arm 12 is positioned on the outer surface side of the other flange 61b of the H-shaped steel 59b, and the other mold plate 60b is It arrange | positions between the action fixing | fixed part 31 of the 2nd turning fixed arm 12, and the outer surface of the other flange 61b of the H-shaped steel 59b.

  The dimension between the inner edges 53 of the recesses 52 of the support plate 14 is substantially the same as the distance between the outer surfaces of the flanges 61a and 61b of the H-shaped steel 59b, and the first and second swivel fixing arms 11 and 12 are fixed. When the portions 17 and 31 are arranged on the outer surfaces of the flanges 61a and 61b of the H-shaped steel 59b, the flanges 61a and 61b of the H-shaped steel 59b fit into the recesses 52 of the support plate 14, and the flanges 61a and 61b of the H-shaped steel 59b. Comes into contact with the inner edge 53 of the recess 52. Even when the accuracy of the H-shaped steel 59b is small and the distance between the outer surfaces of the flanges 61a and 61b varies, the inner edge 53 of the support plate 14 extends downward from the inner edge 54 of the support plate 14 in the vertical direction. As the distance between the inner edges 53 gradually increases, the lateral distance between the inner edges 53 decreases at the inner edge 54 and gradually increases from the inner edge 54 downward in the vertical direction. Therefore, the flanges 61 a and 61 b of the H-shaped steel 59 b can be securely fitted into the recess 52 of the support plate 14.

  A drill bit of an electric drill is fitted into a wrench 46 formed at one end portion 43 of the screw rod 13 in the lateral direction, and the screw rod 13 is rotated clockwise using an electric drill as shown by an arrow D1 in FIG. Rotate. When the screw rod 13 is rotated in the clockwise direction, the one end 43 in the horizontal direction of the screw rod 13 screwed to the nut 26 located at the force point portion 15 of the first turning fixed arm 11 gradually goes outward in the horizontal direction. The power point portions 15 and 29 of the first and second turning fixed arms 11 and 12 gradually move outward in the lateral direction.

  The first and second turning fixed arms 11 and 12 turn around the fulcrum parts 16 and 30 by moving the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 laterally outward. However, the action fixing portions 17 and 31 of the first and second turning fixed arms 11 and 12 gradually move inward in the lateral direction, and the action fixing portion 17 (first and second abutment) of the first turning fixed arm 11 is moved. While the portions 23a, 24a) are in close contact with the outer surface of one mold plate 60a, the inner surface of the mold plate 60a is in close contact with the outer surface of one flange 61a of the H-shaped steel 59b, and the one mold plate 60a is the first. It fixes in the state pinched | interposed into the action fixing | fixed part 17 (1st and 2nd contact part 23a, 24a) of the 1 turning fixed arm 11, and the outer surface of one flange 61a of the H-shaped steel 59b.

  While the action fixing portion 31 (first and second contact portions 37a, 38a) of the second turning fixed arm 12 is in close contact with the outer surface of the other mold plate 60b, the inner surface of the mold plate 60b is H-shaped steel 59b. The other mold plate 60b is in close contact with the outer surface of the other flange 61b, and the other fixed part 31 (first and second contact portions 37a, 38a) of the second turning fixed arm 12 and the other of the H-shaped steel 59b. It is fixed in a state sandwiched between the outer surfaces of the flange 61b. When the mold plates 60a and 60b are fixed to the H-shaped steel 59b, as shown in FIG. 11, the lateral dimension between the force application points 15 and 29 of the first and second swivel fixing arms 11 and 12 is the first. This is larger than the lateral dimension between the action fixing portions 17 and 31 of the first and second swivel fixing arms 11 and 12.

  The fulcrum portions 16 and 30 of the first and second swivel fixing arms 11 and 12 are positioned at the rotary shaft first insertion holes 27 and 41 drilled in the arms 11 and 12, and the action fixing portions are moved from the fulcrum portions 16 and 30. The size up to 17 and 31 is longer than that of the mold plate fixing device 10A, and the form plate fixing device to be attached to the large type H-shaped steel 59b in which the flanges 61a and 61b extend from the web 62 is large. 10B. Similar to the mold plate fixing device 10A, when the turning of the arms 11 and 12 is stopped by the stopper 47, the action fixing portions 17 and 31 of the arms 11 and 12 are the force application portions 15 and 29 and the fulcrum portions 16 and 30. Therefore, the action fixing portion 17 of the first turning fixed arm 11 can be easily positioned on the outer surface of the one flange 61a of the H-shaped steel 59b, and the action of the second turning fixed arm 12 can be achieved. The fixing part 31 can be easily positioned on the outer surface of the other flange 61b of the H-shaped steel 59b, and the arms 11 and 12 can be efficiently installed in a short time without requiring labor on the H-shaped steel 59b. .

  The flanges 61 a and 61 b of the H-shaped steel 59 b are accommodated in the recess 52 formed in the center of the support plate 14, and the flanges 61 a and 61 b abut on the inner edge 53 of the recess 52, so that the support plate 14 and the H-shaped steel are in contact. The flanges 61a and 61b of the 59b can be fixed in a state of being fitted to each other, and the flanges 61a and 61b of the first and second turning fixed arms 11 and 12 and the support plate 14 and the H-shaped steel 59b A large gap does not occur between them, and the mold plates 60a and 60b can be stably fixed to the H-shaped steel 59b.

  After the curing period of the concrete placed in the space 63 between the mold plates 60a and 60b has elapsed and the concrete has hardened, the mold plates 60a and 60b are removed from the H-shaped steel 59b. In the state of FIGS. 12 and 13 in which the mold plates 60a and 60b are fixed to the H-shaped steel 59b, the screw rod 13 is rotated counterclockwise using an electric drill. When the screw rod 13 is rotated in the counterclockwise direction, the one end 43 in the horizontal direction of the screw rod 13 screwed to the nut 19 located at the force point portion 15 of the first turning fixed arm 11 is inward in the horizontal direction. It gradually moves, and the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 gradually move inward in the lateral direction.

  By moving the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 inward in the lateral direction, the action fixing portion 17 of the first turning fixed arm 11 is moved from the outer surface of one mold plate 60a. It moves to the direction to separate, and the fixed state with respect to the flange 61a of the H-section steel 59b of one mold plate 60a is cancelled | released. The action fixing portion 31 of the second turning fixed arm 12 moves in a direction away from the outer surface of the other mold plate 60b, and the fixed state of the other mold plate 60b with respect to the flange 61b of the H-shaped steel 59b is released. After the fixed state of the mold plates 60a and 60b with respect to the flanges 61a and 61b is released, the mold plate fixing device 10B is removed from the mold plates 60a and 60b, and the mold frames from the concrete (flanges 61a and 61b). Remove the plates 60a, 60b.

  In the same way as the mold plate fixing tool 10A, the mold plate fixing tool 10B only rotates the screw rod 13 in the clockwise direction, so that the mold plate 60a can be connected to the action fixing portion 17 of the first swivel fixing arm 12 and H. The shape plate 60b can be fixed between the outer surface of one flange 61a of the section steel 59b, and the work fixing portion 31 of the second turning fixed arm 12 and the outer surface of the other flange 61b of the H-section steel 59b. The mold plates 60a and 60b can be fixed to the H-shaped steel 59b in a short time and efficiently, and the functions of the first and second swivel fixing arms 11 and 12 can be fixed. The mold plates 60a and 60b can be firmly fixed to the flanges 61a and 61b of the H-shaped steel 59b by the fixing portions 17 and 31. Further, the mold plate 60a, 60b can be easily fixed to the flanges 61a, 61b of the H-shaped steel 59b simply by rotating the screw rod 13 in the counterclockwise direction, and the molds can be released from the flanges 61a, 61b. The frame plates 60a and 60b can be easily removed.

  The mold plate fixing device 10B includes first and second abutting portions 23a and 24a of the first and second arm members 21a and 21b and first and second abutting portions of the first and second arm members 35a and 35b. Even if stress is applied to 37a and 38a, the first and second arm members 21a and 21b have first and second reinforcing portions 23b and 24b, and the first and second arm members 35a and 35b are first and second. Since the second reinforcing portions 37b and 38b are provided, the deformation of the first and second contact portions 23a, 24a, 37a, and 38a can be prevented, and the action fixing portion 17 of the first and second swivel fixing arms 11 and 12 can be prevented. 31 can firmly fix the mold plates 60a and 60b to the flanges 61a and 61b of the H-shaped steel 59b.

  In the above-described mold plate fixing devices 10A and 10B, when the screw rod 13 rotates in the clockwise direction, the screw rod screwed to the nut 26 (screw member) of the power point portion 15 of the first turning fixed arm 11 is used. When the one end 43 in the lateral direction of 13 gradually moves outward in the lateral direction from the nut 26 and the screwing rod 13 rotates counterclockwise, the nut 26 (screw member) of the force point portion 15 of the first turning fixed arm 11 is rotated. The case where the lateral end portion 43 of the screw rod 13 screwed to the side gradually moves inward in the lateral direction from the nut 26 has been described. Other examples include the following cases.

  In the screw rod (screw member), a positive screw (for example, a right screw) is formed at one end in the lateral direction located on the first turning fixed arm side, and the other end in the horizontal direction located on the second turning fixed arm side. A reverse screw (for example, a left screw) is formed in the part. A nut 26 (first screw member) is fixed by welding in the space 22 at the position of the force point portion 15 and inside the first turning fixed arm 11 facing the second turning fixed arm 12. A nut 26 (second screw member) is fixed by welding in the space 36 at the position of the force point portion 29 and inside the second turning fixed arm 12 facing the first turning fixed arm 11. A regular screw at one end 43 in the lateral direction of the screw rod 13 is screwed into a nut 26 (first screw member) fixed to the inside of the first turning fixed arm 11, and the other horizontal end 45 in the screw rod 13. The reverse screw is screwed to a nut 26 (second screw member) fixed to the inside of the second turning fixed arm 12.

  In the mold plate fixing devices 10A and 10B having the screw rod 13 formed with the normal screw and the reverse screw, for example, when the screw rod 13 rotates in the clockwise direction, the force point portion 15 of the first turning fixed arm 11 One end 43 in the lateral direction of the screw rod 13 screwed to the nut 26 (first screw member) gradually moves (extends) laterally outward from the nut 26, and the power point portion of the second turning fixed arm 12. The other end 45 in the lateral direction of the screw rod 13 screwed to the nut 26 (second screw member) 29 gradually moves (extends) laterally outward from the nut 26, and is fixed to the first and second swivels. The force application points 15 and 29 of the arms 11 and 12 gradually move outward in the lateral direction (direction in which the force application parts 15 and 29 of the first and second turning fixed arms 11 and 12 are separated from each other). Thereby, the first and second turning fixed arms 11 and 12 turn around the fulcrum portions 16 and 30 (first and second rotating shafts 57 and 58), and the first and second turning fixed arms 11 and 12 are rotated. The action fixing parts 17 and 31 gradually move inward in the lateral direction (direction in which the action fixing parts 17 and 31 of the first and second turning and fixing arms 11 and 12 approach each other).

  On the contrary, when the screw rod 13 rotates counterclockwise, one end portion 43 in the lateral direction of the screw rod 13 screwed to the nut 26 (first screw member) of the power point portion 15 of the first turning fixed arm 11 is moved. The other end in the lateral direction of the threaded rod 13 that gradually moves inward in the lateral direction (extends) from the nut 26 and that is threadedly engaged with the nut 26 (second screw member) of the force application portion 29 of the second turning fixed arm 12. The portion 45 gradually moves (extends) inward in the lateral direction from the nut 26, and the force application points 15 and 29 of the first and second turning fixed arms 11 and 12 move inward in the lateral direction (first and second turning fixed arms). 11 and 12 in the direction in which the force point portions 15 and 29 approach each other. Thereby, the first and second turning fixed arms 11 and 12 turn around the fulcrum portions 16 and 30 (first and second rotating shafts 57 and 58), and the first and second turning fixed arms 11 and 12 are rotated. The action fixing portions 17 and 31 gradually move outward in the lateral direction (the direction in which the action fixing portions 17 and 31 of the first and second turning and fixing arms 11 and 12 are separated from each other). The effects of the mold plate fixing devices 10A and 10B having the screw rod 13 formed with the normal screw and the reverse screw are the same as those of the mold plate fixing devices 10A and 10B shown in FIGS.

DESCRIPTION OF SYMBOLS 10A Formwork board fixing instrument 10B Formwork board fixing equipment 11 First turning fixed arm 12 Second turning fixed arm 13 Screw rod (screwing member)
14 Support plate (support member)
15 Force point portion 16 Support point portion 17 Action fixing portion 18 Upper end region 19 Intermediate region 20 Lower end region 21a First arm member 21b Second arm member 22 Space 23a First contact portion 23b First reinforcement portion 24a Second contact portion 24b First 2 Reinforcement part 25 Connecting piece 26 Nut (screw member)
27 Rotating shaft first insertion hole 28 Rotating shaft second insertion hole 29 Force point portion 30 Support point portion 31 Action fixing portion 32 Upper end region 33 Intermediate region 34 Lower end region 35a First arm member 35b Second arm member 36 Space 37a First contact Part 37b First reinforcing part 38a Second abutting part 38b Second reinforcing part 39 Connecting piece 40 Insertion hole 41 Rotating shaft first insertion hole 42 Rotating shaft second insertion hole 43 Lateral one end 44 Intermediate part 45 Lateral other end Part 46 Wrench 47 Stopper 48 Retaining pin 49 One end part in the horizontal direction 50 Intermediate part 51 The other end part in the horizontal direction 52 Recessed part 53 Inner edge 54 Inner edge 55 Rotary shaft third insertion hole 56 Rotary shaft fourth insertion hole 57 First rotation Shaft 58 Second rotating shaft 59a H-shaped steel 59b H-shaped steel 60a Mold frame 60b Mold frame 61a Flange 61b Flange 62 Web 63 Space

Claims (8)

In a form plate fixing device for removably fixing a form plate used for the enforcement of a concrete structure to a steel material,
The mold plate fixing device has first and second swivel fixings having a force point portion, a fulcrum portion connected to the force point portion, and an action fixing portion connected to the fulcrum portion, extending in the vertical direction while being opposed to each other in the lateral direction An arm, a screw member extending in the lateral direction positioned at the force application point of the first and second pivot fixed arms, and a support member extending in the lateral direction positioned at the fulcrum of the first and second pivot fixed arms A fulcrum portion of the first turning fixed arm is rotatably connected to a lateral end of the support member via a first rotation shaft, and the fulcrum portion of the second turning fixed arm is It is rotatably coupled to the other lateral end of the support member via the second rotation shaft,
In the mold plate fixing device, when the screwing member rotates in either the clockwise direction or the counterclockwise direction, the power point portions of the first and second swivel fixing arms move outward in the lateral direction. Thus, while the first and second swivel fixing arms are swung around the fulcrum, the action fixing portions of the first and second swivel fixing arms are moved inward in the lateral direction, and the screw member is rotated clockwise. And the counterclockwise direction, the power point of the first and second swivel fixing arms moves inward in the lateral direction, whereby the first and second swivel fixing arms are supported as fulcrums. A mold plate fixing device, wherein the action fixing portions of the first and second turning fixing arms move outward in the lateral direction while turning around the center.   The screw member has a lateral end located on the first swivel fixed arm side and a lateral other end located on the second swivel fixed arm side. A screw member for screwing one of the one end portion in the direction and the other end portion in the horizontal direction is installed at one of the force point portions of the first turning fixed arm and the second turning fixed arm; In the plate fixing device, when the screw member rotates in either the clockwise direction or the counterclockwise direction, the screw member moves from the screw member to either the laterally inward or laterally outward direction. The form plate fixing device according to claim 1, wherein the force point portions of the first and second swivel fixing arms move either in the lateral direction or in the lateral direction.   A stopper for stopping the turning of one of the first turning fixed arm and the second turning fixed arm is installed on either one of the lateral end and the other lateral end of the screw member, In the mold plate fixing device, when the stopper comes into contact with either the first turning fixed arm or the second turning fixing arm, the turning of the arms stops, and the turning of the arms by the stopper is stopped. The formwork board fixing device according to claim 2, wherein the action fixing portions of the arms are located laterally outward of the fulcrum portion when stopped.   The one end in the lateral direction in which the screw member is located on the first turning fixed arm side to form a normal screw, and the opposite direction in which a reverse screw is formed on the second turning fixed arm side. A first screw member having a second end and screwing a positive screw at one end in the lateral direction of the screw member is installed at a power point portion of the first turning fixed arm, and the horizontal direction of the screw member A second screw member for screwing the reverse screw at the other end portion is installed at a power point portion of the second turning fixed arm, and in the mold plate fixing device, the screw member is rotated in a clockwise direction and a counterclockwise direction. When the rotation member is rotated in any direction, the force points of the first and second swivel fixing arms are moved from the first and second screw members to either inward in the lateral direction or outward in the lateral direction. The form plate fixing device according to claim 1, wherein the portion moves in either the laterally inner side or the laterally outward side.   The first and second swivel fixing arms have a plurality of fulcrum portions arranged in the vertical direction, and in the mold plate fixing device, by selecting a predetermined one from these fulcrum portions, The form plate fixing device according to any one of claims 1 to 4, wherein the length of the dimension up to the action fixing portion can be changed.   In the mold plate fixing device, the working fixing portion of the first swivel fixing arm is positioned on the outer surface side of one of the flanges of the steel material, and the mold plate is fixed to the working fixing portion of the first swiveling fixing arm and the steel material. Between the outer surface of one of the flanges, and the action fixing portion of the second turning fixed arm is positioned on the outer surface side of the other flange of the steel material so that the form plate is placed on the second turning fixed arm. After being arranged between the action fixing portion and the outer surface of the other flange of the steel material, the screw member is rotated in either the clockwise direction or the counterclockwise direction to fix the first and second swivels. By moving the force point portion of the arm laterally outward, the work fixing portion of the first swivel fixing arm is in close contact with the mold plate, and the mold plate is connected to the action fixing portion of the first swivel fixing arm. The state sandwiched between the outer surfaces of one flange of the steel material The mold fixing plate is sandwiched between the action fixing portion of the second turning fixed arm and the outer surface of the other flange of the steel material while the action fixing portion of the second turning fixed arm is in close contact with the mold plate. The mold plate fixing device according to any one of claims 1 to 5, which is fixed in a fixed state.   The steel material is H-shaped steel, and in the form plate fixing device, the working fixing portion of the first swivel fixing arm is positioned on the outer surface side of one flange of the H-shaped steel, and the form plate is It arrange | positions between the action fixing | fixed part of a 1st turning fixed arm, and the outer surface of one flange of this H-shaped steel, and the outer surface side of the other flange of the said H-shaped steel is made into the action fixing | fixed part of the said 2nd turning fixed arm. The mold plate is positioned between the action fixing portion of the second swivel fixing arm and the outer surface of the other flange of the H-shaped steel, and then the screw member is rotated clockwise and counterclockwise. The force fixing portions of the first and second swivel fixing arms are moved laterally outward by rotating in either one of the directions, so that the action fixing portion of the first swiveling fixing arm is attached to the mold plate. The mold plate is in close contact with the action fixing portion of the first swivel fixing arm. It is fixed in a state of being sandwiched between the outer surfaces of one of the flanges of the shape steel, and the work plate of the second swivel fixing arm is in close contact with the mold plate while the work plate is acting on the second swivel fixing arm. The formwork plate fixing device according to claim 6, wherein the fixing device is fixed in a state of being sandwiched between a fixing portion and an outer surface of the other flange of the H-shaped steel. The support member has a recess formed in the center thereof for receiving the flanges of the H-shaped steel, and the flanges of the H-shaped steel are spaced apart from each other in the lateral direction and extend in the longitudinal direction. The mold plate fixing device according to claim 7, which abuts against the mold plate.

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