JP7390527B1 - Scaffold board fixing device and elevator work car device using the same - Google Patents

Abstract

An object of the present invention is to provide a scaffold board fixing device that can improve workability compared to the conventional one, and an elevator work car device using the same. A scaffold board fixture 1 includes a first bracket 10 having at least a portion 10C that contacts the top surface of the scaffold board, an engagement recess 11A that engages with a straight body such as a pipe from below, and The second bracket 11 includes a support portion 11B adjacent to the engagement recess 11A, and the support shaft 12 projects downward from the first bracket 10 and supports the support portion 11B of the second bracket 11. A support shaft 12 that is rotatable around the axis of the support shaft 12, movable in the axial direction of the support shaft 12, and tiltable in a direction orthogonal to the axis of the support shaft 12, and the second bracket 11 is supported on the first bracket 10 side. and a biasing means 13 for biasing. [Selection diagram] Figure 1

Description

The present invention relates to a scaffold board fixing device for fixing a scaffold board placed on a straight body such as a pipe (single pipe) to a straight body when constructing a work floor at a construction site. The present invention also relates to an elevator work car device that uses a scaffold board fixing tool when constructing a work floor on the car outer frame during elevator installation work.

The construction method for the work floor is to install a pair of pipes horizontally and in parallel with each other at a predetermined distance, then place multiple scaffolding boards side by side on top of this, and then fix each scaffolding board to the pipes. The method of integrating the whole is often used. Conventionally, load tightening belts and wires have been commonly used as fixing means (Figure 12 of Patent Document 1).

However, in these cases, since a certain degree of skill is required for the work, the degree of completion and the time required vary depending on the worker. In addition, there are also safety issues, as the user may have to stand on scaffolding boards that are not yet fixed. Therefore, as a countermeasure against these problems, various scaffold board fixing devices have been proposed (Patent Documents 2 and 3).

The scaffold board fixture described in Patent Document 2 has a fixture body, a scaffolding pipe gripping part protruding from the fixture body, and an inverted L shape that is spaced from each other on the fixture body on the pipe gripping part side. It is provided with a pair of scaffold board holding parts that are raised and protruded in a letter shape.

Further, one scaffold board fixture described in Patent Document 3 includes a support plate that supports the lower part of a pipe, a nut fixing member extending horizontally from the support plate, a nut fixed to the nut fixing member, and a nut fixing member that extends horizontally from the support plate. It is equipped with a scaffold board support piece that stands up from the end of the fixed member, a presser plate that contacts the top surface of the scaffold board, and a bolt that passes through the presser plate and is screwed into a nut, and the support plate is pulled up by turning the bolt. However, the pipe and scaffolding board are held between the supporting plate, the holding plate, and the scaffolding support piece.

Another scaffold board fixture described in Patent Document 3 includes a presser plate that comes into contact with the upper surface of the scaffold plate, a nut fixing plate that hangs down from the presser plate, and a nut that is fixed to the nut fixing plate. A support plate that supports the lower part of the pipe, a bolt guide plate that extends horizontally from the support plate, a bolt that passes through the bolt guide plate and is screwed into a nut, and a scaffolding plate support piece that stands up from the end of the bolt guide plate. The pipe and scaffolding plate are held between the supporting plate, the holding plate, and the scaffolding support piece while turning the bolt and pulling up the supporting plate.

Japanese Unexamined Patent Publication No. 7-109833 Microfilm of Utility Model No. 61-9452 Japanese Patent Application Publication No. 2017-115304

However, in the scaffold board fixing tool described in Patent Document 2, first, one scaffold board is placed on top of the pipe, and then the pipe gripping part of the fixture is inserted from the bottom of the pipe. After fitting, shift the fixture in the axial direction so that it touches the side edge of the scaffolding board, then place a new scaffolding board side by side, and repeat these operations for the number of scaffolding boards. This method is adopted. For this reason, when a plurality of scaffolding boards are placed side by side, it is difficult to attach and remove the fixtures, resulting in a problem of poor workability.

In addition, in the scaffold board fixture described in Patent Document 3, the support plate is vertically translated in parallel by turning a bolt. Therefore, in order to engage or disengage the support plate from the pipe, the bolt must be rotated many times, resulting in poor workability. This becomes more noticeable as the shape of the recess of the support plate is made deeper in order to firmly engage the support plate with the pipe.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a scaffold board fixing device that can improve workability compared to the past, and an elevator work car device using the same. .

The scaffold board fixing device according to the present invention includes:
A scaffold board fixing device for fixing a scaffold board placed on a straight body to the straight body,
a first bracket having at least a portion that comes into contact with the upper surface of the scaffolding board;
a second bracket comprising an engagement recess that engages the straight body from below and a support portion adjacent to the engagement recess;
A support shaft that projects downward from the first bracket and supports the support portion of the second bracket, the second bracket being rotatable around the axis of the support shaft and movable in the axial direction of the support shaft, and perpendicular to the axis of the support shaft. a support shaft that supports tilting in a direction;
The scaffold board fixing device includes a biasing means for biasing the second bracket toward the first bracket.

Here, as one aspect of the scaffold board fixing device according to the present invention,
The biasing means is rotatably attached to a portion of the support shaft that protrudes below the support portion of the second bracket about a direction perpendicular to the axis of the support shaft, and the distance from the center of rotation to the circumferential surface changes the rotation angle. It is possible to adopt a configuration in which the operating member has a cam surface that increases in accordance with the cam surface.

In addition, as another aspect of the scaffold board fixing device according to the present invention,
The first bracket includes a base disposed on the lower side of the scaffold board, a vertical piece that protrudes upward from the base and passes through the gap between two adjacent scaffold boards, and a vertical piece extending horizontally from the upper end of the vertical piece. and a contact portion that protrudes and comes into contact with the top surface of the scaffolding board,
The support shaft may be configured to protrude downward from the base of the first bracket.

Also, in this case,
The biasing means is rotatably attached to a portion of the support shaft that protrudes below the support portion of the second bracket about a direction perpendicular to the axis of the support shaft, and the distance from the center of rotation to the circumferential surface changes the rotation angle. It is possible to adopt a configuration in which the operating member has a cam surface that increases in accordance with the cam surface.

or,
It is possible to adopt a configuration in which two or more sets of vertical pieces and abutting parts of the first bracket are provided corresponding to each of two or more adjacent scaffolding boards.

Moreover, as another aspect of the scaffold board fixing device according to the present invention,
The first bracket includes a base that straddles two or more adjacent scaffolding boards and abuts the upper surface of the scaffolding board,
The support shaft is a first support shaft that projects downward from the base of the first bracket, passes through the gap between two adjacent scaffolding boards, and further projects below the lower surface of the scaffolding board,
In addition to the first support shaft, between two adjacent scaffolding boards that protrude downward from the base of the first bracket at a predetermined interval from the first support shaft in the direction perpendicular to the longitudinal direction of the base. a second support shaft that passes through the gap and further protrudes below the lower surface of the scaffolding board;
A pair of support parts of the second bracket are provided with the engagement recess in between, the first support part being supported by the first support shaft, and the slit allowing rotation of the second bracket around the axis of the first support shaft. and a second support part supported by the second support shaft,
The biasing means is an elastic member disposed in a portion of the first support shaft that protrudes below the first support portion of the second bracket, and elastically biases the second bracket upward in the axial direction of the first support shaft. It is possible to adopt a configuration with .

Also, in this case,
The base of the first bracket includes a pair of projecting pieces protruding from both side edges in a direction orthogonal to the longitudinal direction of the base,
It is possible to adopt a configuration in which the first support shaft is disposed on one of the projecting pieces, and the second support shaft is arranged on the other protrusion.

Further, the elevator work car device according to the present invention includes:
An elevator work car device, in which a work floor is provided on the outer frame of the car, and one of the above-mentioned scaffold board fixing devices is used to fix the scaffold board placed on the straight body on the work floor to the straight body. It is.

According to the present invention, the second bracket is rotatable around the axis of the support shaft, movable in the axial direction of the support shaft, and tiltable in a direction perpendicular to the axis of the support shaft. Thereby, even when a plurality of scaffold boards are placed side by side, the fixture can be attached and removed. Further, by utilizing the tilting movement of the second bracket, it becomes easy to engage the second bracket with the straight body or to disengage the second bracket from the straight body. Then, by urging the second bracket toward the first bracket by the urging means, the first bracket and the second bracket sandwich the linear body and the scaffold board, and the scaffold plate is fixed to the linear body. Can be done. Therefore, according to the present invention, workability can be improved compared to the conventional method.

FIG. 1(a) is a front view of the scaffold board fixture according to the first embodiment. FIG. 1(b) is an exploded front view of the scaffold board fixture according to the first embodiment. FIG. 1(c) is a right side view of the scaffold board fixture according to the first embodiment. FIG. 2(a) is a top view of the scaffold board fixture according to the first embodiment. FIG. 2(b) is a bottom view of the scaffold board fixture according to the first embodiment. FIG. 3(a) is a perspective view of the scaffold board fixed to the pipe using the scaffold board fixing device according to the first embodiment, viewed diagonally from below. FIG. 3(b) is a perspective view of the state viewed diagonally from above. FIG. 4(a) is a front view of a scaffold board fixture according to another embodiment 1-1. FIG. 4(b) is a front view of a scaffold board fixture according to another embodiment 1-2. FIG. 5(a) is a front view of the scaffold board fixture according to the second embodiment. FIG. 5(b) is a right side view of the scaffold board fixture according to the second embodiment. FIG. 5(c) is an exploded right side view of the scaffold board fixture according to the second embodiment. FIG. 6(a) is a top view of the scaffold board fixture according to the second embodiment. FIG. 6(b) is a bottom view of the scaffold board fixture according to the second embodiment. FIG. 7(a) is a perspective view of the scaffold board fixed to the pipe using the scaffold board fixing device according to the second embodiment, as seen diagonally from below. FIG. 7(b) is a perspective view of the state viewed diagonally from above. FIG. 8(a) is a top view of a scaffold board fixture according to another embodiment 2-1. FIG. 8(b) is a top view of a scaffold board fixture according to another embodiment 2-2. FIG. 8(c) is a top view of a scaffold board fixture according to another embodiment 2-3. FIG. 9 is a perspective view of an elevator work car device, which is an application example of the scaffold board fixing device according to the first embodiment, viewed diagonally from above. FIG. 10 is a perspective view of the upper work area of the elevator work car device as seen diagonally from below. FIG. 11 is a perspective view of an elevator work car device, which is an application example of the scaffold board fixing device according to the second embodiment, viewed diagonally from above. FIG. 12 is a perspective view of the upper work area of the elevator work car device as seen diagonally from below.

<Embodiment 1>
Embodiment 1 of the scaffold board fixture according to the present invention will be described below.

As shown in FIGS. 1 and 2, the scaffolding board fixture 1 (hereinafter referred to as "fixing fixture 1" for short) is for fixing the scaffolding board placed on the pipe to the pipe. It includes a first bracket 10, a second bracket 11, a support shaft 12, and a cam lever 13. The first bracket 10 includes at least a portion 10C that contacts the upper surface of the scaffolding board. The second bracket 11 includes an engagement recess 11A that engages with the pipe from below and a support portion 11B adjacent to the engagement recess 11A. The support shaft 12 protrudes downward from the first bracket 10, supports the support portion 11B of the second bracket 11, and is rotatable around the axis of the support shaft 12 and in the axial direction of the support shaft 12. It is supported movably and tiltably in a direction orthogonal to the axis of the support shaft 12. The cam lever 13 is a biasing device that biases (pulls up) the second bracket 11 toward the first bracket 10 by rotating the cam lever 13 .

The first bracket 10 includes a base portion 10A, a vertical piece portion 10B, and a contact portion 10C. The base 10A is arranged on the lower surface side of the scaffold board. The base 10A is a strip plate that is elongated in the first direction, which is the width direction of the scaffold board, and has the same length as the width of the scaffold board. The base 10A is provided with a screw hole 10Aa at a predetermined location in the longitudinal direction (in the present embodiment, it is the center, but it may be located closer to either end of the center). The vertical piece portion 10B projects upward from the base portion 10A and passes through the gap between two adjacent scaffolding boards. The vertical piece portion 10B is a strip plate having a length longer than the thickness of the scaffold board. The vertical piece portions 10B protrude upward from each end of the base portion 10A. The contact portion 10C protrudes laterally from the upper end of the vertical piece portion 10B and comes into contact with the upper surface of the scaffold board. The contact portion 10C is a strip plate having a length shorter than the width of the scaffold board. The contact portion 10C protrudes from the upper end of each vertical side portion 10B in the same horizontal direction. In this embodiment, the base 10A, the two vertical pieces 10B, 10B, and the two contact parts 10C, 10C are made of one metal strip plate having a predetermined thickness and sufficient rigidity. It is formed by bending at the point.

The second bracket 11 includes an engagement recess 11A and a support portion 11B. The engagement recess 11A is bent into a V-shape (it may also be curved into a semicircular arc) and engages with the pipe from below. The engagement recess 11A is a strip plate having a length longer than the diameter of the pipe. The support portion 11B is a flat band plate that protrudes from one edge of the engagement recess 11A and extends along the horizontal plane. The support portion 11B includes a through hole 11Ba that is larger than a shaft portion 12A of the support shaft 12, which will be described later. The through hole 11Ba is a circular hole and has a larger diameter than the shaft portion 12A of the support shaft 12. In the present embodiment, the engagement recess 11A and the support part 11B are made of a single piece having a predetermined thickness and sufficient rigidity, but are smaller than the thickness of the first bracket 10 and thus have a certain degree of elasticity. It is formed by bending a metal strip at appropriate locations.

The support shaft 12 includes a shaft portion 12A and a rotating shaft portion 12B. The shaft portion 12A is a screw shaft, and the upper end thereof is screwed into the screw hole 10Aa of the base portion 10A of the first bracket 10, so that the support shaft 12 projects downward from the base portion 10A of the first bracket 10. By inserting the protruding portion of the shaft portion 12A through the through hole 11Ba of the support portion 11B of the second bracket 11 and the inner hole of the washer-like interposed member 14, the protruding portion of the shaft portion 12A is inserted into the second bracket 11. The support portion 11B and the intervening member 14 are arranged. The rotating shaft portion 12B is a cylindrical body. The rotating shaft portion 12B has a screw hole formed along the direction perpendicular to the axis thereof, and the lower end of the shaft portion 12A is screwed into this screw hole, so that the shaft portion 12A and the rotating shaft portion 12B are integrated. be done.

The cam lever 13 includes a cam portion 13A and a lever portion 13B. The cam portion 13A includes a shaft hole 13Aa, and by inserting the rotating shaft portion 12B of the support shaft 12 into the shaft hole 13Aa, the cam lever 13 ) around the axis orthogonal direction of the support shaft 12. The cam portion 13A has a cam surface in which the distance from the center of rotation to the circumferential surface increases as the rotation angle changes. More specifically, the cam lever 13 is swingable between a state in which it stands up against the base 10A of the first bracket 10 (first rotation angle) and a state along the base 10A (second rotation angle); The cam surface is set so that the distance from the rotation center to the circumferential surface gradually increases from the first rotation angle to the second rotation angle. As a result, when the cam lever 13 is raised, the distance between the base portion 10A of the first bracket 10 and the cam surface becomes larger than the total thickness of the support portion 11B of the second bracket 11 and the interposed member 14, and a gap is created. The second bracket 11 is rotatable around the axis of the support shaft 12, movable in the axial direction of the support shaft 12, and tiltable in a direction perpendicular to the axis of the support shaft 12. On the other hand, when the cam lever 13 is in the tilted state, the gap disappears, a tightening force is applied by the surface of the interposed member 14, and the rotation, movement, and tilting of the second bracket 11 are restricted (locked). The bracket 11 is integrally fixed to the first bracket 10.

The configuration of the fixture 1 according to the first embodiment is as described above. Next, the method of use (method of fixing the scaffolding board) will be explained.

As shown in FIG. 3, the fixture 1 fixes two adjacent scaffolding boards 4, 4 to the pipe 3. That is, one contact portion 10C of the first bracket 10 contacts the top surface of one scaffold board 4, the other contact portion 10C contacts the top surface of the other scaffold board 4, and the second bracket 11 contacts the top surface of the other scaffold board 4. By tightening the cam lever 13 while engaged from below, the pipe 3 and the two scaffolding boards 4, 4 are held between the first bracket 10 and the second bracket 11, and the two scaffolding boards 4, 4 are held between the first bracket 10 and the second bracket 11. is fixed to pipe 3.

The fixture 1 is placed in a state in which the lock by the cam lever 13 is released (if necessary, the second bracket 11 is rotated so as to be parallel to the first bracket 10), and the scaffold that has already been placed is placed on the fixture 1. Attach it by sliding it from the edge of the plates 4, 4. At this time, instead of installing the first bracket 10 so that it is located outside the pipe 3 (on the longitudinal end side of the scaffold board 4), the first bracket 10 is installed inside the pipe 3 (on the end of the scaffold board 4). If you want to install it so that it is located at the center in the longitudinal direction, it is necessary to lift the two scaffolding boards 4, 4 slightly above the pipe 3 so that the fixture 1 can pass through the pipe 3. Alternatively, the fixture 1 may be attached to the two scaffolding boards 4, 4 in advance, and the lock by the cam lever 13 is released, and the second bracket 11 is rotated so as to be parallel to the first bracket 10. , two scaffolding boards 4, 4 may be placed on top of the pipe 3.

If the second bracket 11 has been rotated so as to be parallel to the first bracket 10, the second bracket 11 is rotated 90 degrees and aligned so as to intersect with the pipe 3. Alternatively, if this is not the case, the second bracket 11 enters the pipe 3 from a direction perpendicular to the pipe 3 by the sliding movement of the fixture 1 and is aligned so as to intersect with the pipe 3. In either case, when the cam lever 13 is loosened, the second bracket 11 is movable in the axial direction of the support shaft 12 and tiltable in the direction perpendicular to the axis of the support shaft 12 . Therefore, the second bracket 11 can get over the pipe 3 without any trouble.

As described above, according to the fixture 1 according to the first embodiment, the second bracket 11 is rotatable around the axis of the support shaft 12, movable in the axial direction of the support shaft 12, and in a direction orthogonal to the axis of the support shaft 12. It can be tilted against. Thereby, even when a plurality of scaffold boards 4, . . . are placed side by side, the fixture 1 can be attached and removed. Further, by utilizing the tilting movement of the second bracket 11, it becomes easy to engage the second bracket 11 with the pipe 3 or to disengage the second bracket 11 from the pipe 3. Then, by urging the second bracket 11 toward the first bracket 10 using the lock lever 13, the first bracket 10 and the second bracket 11 sandwich the pipe 3 and the scaffolding boards 4, and so on. ... can be fixed to the pipe 3. Therefore, according to the fixture 1 according to the first embodiment, the operation becomes easy and the workability can be improved compared to the conventional one.

Moreover, according to the fixture 1 according to the first embodiment, two adjacent scaffold boards 4, 4 can be fixed with one fixture 1. Therefore, according to the fixture 1 according to the first embodiment, the number of fixtures 1 used can be reduced and the working time can be shortened.

Further, according to the fixture 1 according to the first embodiment, the second bracket 11 is urged toward the first bracket 10 by the cam lever 13 and is pressed against the pipe 3. Therefore, according to the fixture 1 according to the first embodiment, strong fixing force can be obtained.

Further, according to the fixture 1 according to the first embodiment, the vertical piece portion 10B of the first bracket 10, which is part of the configuration of the fixture 1, is interposed in the gap between the two adjacent scaffolding boards 4, 4. . Therefore, according to the fixture 1 according to the first embodiment, it is possible to prevent the scaffold board 4 from shifting laterally.

<Embodiments other than Embodiment 1>
The fixture 1 shown in FIG. 4(a) can fix one scaffolding board 4 with one abutting part 10C of the first bracket 10 facing the other abutting part 10C. Further, in the fixture 1 shown in FIG. 4(b), the base 10A of the first bracket 10 has the same length as the width of the two adjacent scaffolding boards 4, 4, and the vertical piece 10B is located in the middle of the base 10A. By adding the contact portion 10C, the three scaffold boards 4, 4, 4 can be fixed. Note that the additional vertical piece portion 10B and the contact portion 10C are connected to the base portion 10A by joining the joint portion 10D, which projects laterally from the lower end of the vertical piece portion 10B, to the base portion 10A by a joining means such as welding. be integrated.

<Embodiment 2>
Next, a second embodiment of the scaffold board fixture according to the present invention will be described.

As shown in FIGS. 5 and 6, the scaffold board fixing device 2 (hereinafter referred to as "fixing device 2" for short) is for fixing the scaffold board placed on the pipe to the pipe. It includes a first bracket 20, a second bracket 21, a first support shaft 22, and a second support shaft 23. The first bracket 20 entirely contacts the upper surface of the scaffold board. The second bracket 21 includes an engagement recess 21A that engages with the pipe from below, and a first support 21B and a second support 21C adjacent to the engagement recess 21A. The first support shaft 22 protrudes downward from the first bracket 20, passes through the gap between two adjacent scaffold boards, and further protrudes below the lower surface of the scaffold board, and the first support portion 21B of the second bracket 21 and the second bracket 21 is rotatable around the axis of the first support shaft 22, movable in the axial direction of the first support shaft 22, and tiltable in a direction orthogonal to the axis of the first support shaft 22. To support. The second support shaft 23 protrudes downward from the first bracket 20, passes through the gap between two adjacent scaffold boards, and further protrudes below the lower surface of the scaffold board, and the second support portion 21C of the second bracket 21 support.

The first bracket 20 includes a base 20A, a first vertical piece 20B, and a second vertical piece 20C. The base 20A is arranged on the upper surface of the scaffold board. The base 20A is elongated in the first direction, which is the width direction of the scaffolding board, and has the same length as the width of the two adjacent scaffolding boards, and extends over the two adjacent scaffolding boards to extend over the top surface of the scaffolding board. It is a strip plate that comes into contact with. The base 20A is arranged at a predetermined location in the longitudinal direction (in the present embodiment, the center is located, but it may be located closer to either end of the center) and is perpendicular to both edges in the orthogonal direction to the longitudinal direction. A pair of protruding pieces 20Aa, 20Aa are provided that protrude in the direction. Each projecting piece portion 20Aa includes a through hole 20Ab. The first vertical piece portion 20B protrudes downward from a portion of one longitudinal edge of the base portion 20A (in this embodiment, the left and right ends excluding the center portion) and extends between two adjacent scaffolding boards. Get into the gap. The first vertical piece portion 20B is a strip plate having a length that is equal to or shorter than the thickness of the scaffolding board. The second vertical piece portions 20C protrude downward from a part of the other longitudinal edge of the base 20A (in this embodiment, the central portion is a region where the first vertical piece portion 20B is not formed) and are adjacent to each other. Enter the gap between the two scaffolding boards. The second vertical piece portion 20C is a strip plate having a length that is the same as or shorter than the thickness of the scaffolding board. In this embodiment, the base 20A, the first vertical piece 20B, and the second vertical piece 20C are made by bending a single metal strip plate having a predetermined thickness and sufficient rigidity at appropriate locations. It is formed by

The second bracket 21 includes an engagement recess 21A, a first support portion 21B, and a second support portion 21C. The engagement recess 21A is bent in a V-shape (it may be curved in a semicircular arc shape), and engages with the pipe from below. The engagement recess 21A is a strip plate having a length longer than the diameter of the pipe. The first support portion 21B is a flat band plate that protrudes from one edge of the engagement recess 21A and extends along the horizontal plane. The first support portion 21B includes a through hole 21Ba that is larger than the shaft portion of the first support shaft 22, which will be described later. The through hole 21Ba is a circular hole and has a larger diameter than the shaft portion of the first support shaft 22. The second support portion 21C is a flat band plate that protrudes from the other edge of the engagement recess 21A and extends along the horizontal plane. The second support portion 21C includes a slit 21Ca through which a later-described shaft portion of the second support shaft 23 enters and exits. The second support portion 21C is provided at a lower position than the first support portion 21B. In this embodiment, the engagement recess 21A, the first support part 21B, and the second support part 21C have a predetermined thickness and have sufficient rigidity, but are smaller than the thickness of the first bracket 20. It is formed by bending a single metal strip having a certain degree of elasticity at appropriate locations.

The first support shaft 22 includes a shaft portion, a locking portion, an enlarged portion, and a compression spring 22B. The shaft portion is constituted by a threaded portion of a bolt 22A that is inserted into a through hole 20Ab of one projecting piece portion 20Aa of the first bracket 20. The support part is set on the upper end side of the shaft part, is constituted by the head of the bolt 22A, is latched to one protrusion part 20Aa of the first bracket 20, and is joined by a joining means such as welding as necessary. Ru. The enlarged portion is set on the lower end side of the shaft portion, and includes a washer 22C and a nut (double nut) 22D that are inserted into or screwed into the threaded portion of the bolt 22A.

The compression spring 22B is a portion of the shaft portion of the first support shaft 22 that protrudes below the first support portion 21B of the second bracket 21, that is, the first support portion 21B of the second bracket 21 and the first support shaft. 22 is an elastic member that elastically biases the second bracket 21 upward in the axial direction of the first support shaft 22, and biases the second bracket 21 toward the first bracket 20 ( (pushing up) is a biasing means.

The second support shaft 23 includes a shaft portion, a locking portion, and an enlarged portion. The shaft portion is constituted by a threaded portion of a bolt 23A that is inserted into a through hole 20Ab of the other projecting piece portion 20Aa of the first bracket 20. The support portion is set on the upper end side of the shaft portion, is constituted by the head of the bolt 23A, and is locked to the other projecting piece portion 20Aa of the first bracket 20. The enlarged portion is set on the lower end side of the shaft portion, and is constituted by a washer 23B and a nut 23C that are inserted into or screwed into the threaded portion of the bolt 23A.

The configuration of the fixture 2 according to the second embodiment is as described above. Next, the method of use (method of fixing the scaffolding board) will be explained.

As shown in FIG. 7, the fixture 2 fixes two adjacent scaffolding boards 4, 4 to the pipe 3. That is, the first bracket 20 comes into contact with the upper surfaces of the two adjacent scaffolding boards 4, 4, the second bracket 21 engages with the pipe 3 from below, and the second support part 21C of the second bracket 21 By tightening the nut 23C of the second support shaft 23 while supported by the second support shaft 23, the pipe 3 and the two scaffolding boards 4, 4 are held between the first bracket 20 and the second bracket 21. , two scaffolding boards 4, 4 are fixed to the pipe 3.

The fixture 2 is installed by sliding it from the end of the scaffolding boards 4, 4 already placed (after rotating the second bracket 21 so that it is parallel to the first bracket 20, if necessary). do. At this time, if you want to install it so that the second support shaft 23 is located inside the pipe 3 (on the longitudinal center side of the scaffold board 4), or if you want to install it so that the second support shaft 23 is located inside the pipe 3. In either case, it is necessary to lift the two scaffolding boards 4, 4 slightly above the pipe 3 so that the fixture 2 can pass through the pipe 3. Alternatively, the fixture 2 may be attached to the two scaffold boards 4, 4 in advance, and the second bracket 21 may be rotated so as to be parallel to the first bracket 20, and then the fixture 2 may be attached to the two scaffold boards 4, 4. may be placed on the pipe 3.

When the second bracket 21 has been rotated so as to be parallel to the first bracket 20, the second bracket 21 is rotated by 90 degrees and aligned so as to intersect with the pipe 3. Alternatively, if this is not the case, the second bracket 21 enters the pipe 3 from a direction perpendicular to the pipe 3 by the sliding movement of the fixture 2 and is aligned so as to intersect the pipe 3. In either case, the second bracket 21 is movable in the axial direction of the first support shaft 22 and tiltable in the direction perpendicular to the axis of the first support shaft 22, and also presses down the compression spring 22B. By doing so, the amount of movement and the amount of tilting can be further increased. Therefore, the second bracket 21 can get over the pipe 3 without any trouble.

As described above, according to the fixture 2 according to the second embodiment, the second bracket 21 is rotatable around the axis of the first support shaft 22, movable in the axial direction of the first support shaft 22, and It is tiltable in the direction perpendicular to the axis of 22. Thereby, even when a plurality of scaffold boards 4, . . . are placed side by side, the fixture 2 can be attached and removed. Further, by utilizing the tilting movement of the second bracket 21, it becomes easy to engage the second bracket 21 with the pipe 3 or to disengage the second bracket 21 from the pipe 3. Then, by urging the second bracket 21 toward the first bracket 20 side by the compression spring 22B, the first bracket 20 and the second bracket 21 sandwich the pipe 3 and the scaffolding boards 4, etc., and the scaffolding boards 4, ... can be fixed to the pipe 3. Therefore, according to the fixture 2 according to the second embodiment, the operation becomes easy and the workability can be improved compared to the conventional one.

Moreover, according to the fixture 2 according to the second embodiment, two adjacent scaffold boards 4, 4 can be fixed with one fixture 2. Therefore, according to the fixture 2 according to the second embodiment, the number of fixtures 2 used can be reduced and the working time can be shortened.

Further, according to the fixture 2 according to the second embodiment, the second bracket 21 is urged toward the first bracket 20 by the compression spring 22B and is pressed against the pipe 3. Therefore, according to the fixture 2 according to the second embodiment, a strong fixing force can be obtained.

According to the fixture 2 according to the second embodiment, the first vertical piece 20B of the first bracket 20, which is part of the structure of the fixture 2, is located in the gap between the two adjacent scaffolding boards 4, 4. A second vertical piece portion 20C is interposed. Therefore, according to the fixture 2 according to the second embodiment, it is possible to prevent the scaffold board 4 from shifting laterally.

Moreover, according to the fixture 2 according to the second embodiment, in the two adjacent fixtures 2, 2, the first vertical piece portion 20B of the first bracket 20 of one fixture 2 and the first vertical piece 20B of the first bracket 20 of the other fixture 2 are The second vertical piece portions 20C of the first bracket 20 do not interfere with each other and are arranged in a row along the direction orthogonal to the longitudinal direction of the first bracket 20. Therefore, according to the fixture 2 according to the second embodiment, the gap between two adjacent scaffold boards 4, 4 can be made as small as possible, and the plurality of scaffold boards 4, ... can be arranged closely. can.

<Embodiments other than Embodiment 2>
However, as shown in FIGS. 8A and 8B, the first vertical piece 20B and the second vertical piece 20C of the first bracket 20 are not essential. Moreover, as shown in FIG. 8(b), when the first vertical piece part 20B and the second vertical piece part 20C are not provided, the first bracket 20 may be short. Furthermore, the projecting piece 20Aa of the first bracket 20 is not essential either.

Furthermore, in the fixture 2 shown in FIG. 8(c), the base 20A of the first bracket 20 has the same length as the width of the three adjacent scaffolding boards 4, 4, 4, and By setting the positions of the first support shaft 22 and the second support shaft 23, the three scaffold boards 4, 4, 4 can be fixed. Note that FIG. 8(c) is drawn on a smaller scale than FIGS. 6, 8(a), and 8(b).

<Application example of Embodiment 1>
Next, as an application example of the fixture 1 according to the first embodiment, an elevator work car device will be described. In addition, the elevator work car device (hereinafter referred to as "work car device" for short) refers to the construction of guide rails and machine rooms using other construction methods (using scaffolding, gondolas, etc.) in advance during elevator installation work. After construction is completed and the main equipment (actually used as part of the elevator structure) (car outer frame, car sheave, main rope, hoisting machine, etc.) is ready for operation, a work area is installed on the car outer frame. This refers to a device used in construction methods in which the outer car frame is raised and lowered within the hoistway to perform other construction work.

As shown in FIGS. 9 and 10, the work car device includes a permanent car outer frame 5, a permanent car sheave case 6, a permanent main rope 7, a temporary lower work area 8, and a temporary car sheave case 6. and an upper workshop 9. The fixing device 1 according to the first embodiment is used for fixing a plurality of scaffolding boards 4, .

The car outer frame 5 is composed of left and right vertical frames 5a, 5a, a lower horizontal frame 5b, and an upper horizontal frame 5c. Each frame 5a, 5b, 5c is constructed using, for example, channel steel. The lower horizontal frame 5b connects the lower ends of the left and right vertical frames 5a, 5a. The upper horizontal frame 5c connects the upper ends of the left and right vertical frames 5a, 5a. The upper horizontal frame 5c is constructed using two steel members arranged at a predetermined interval. A car sheave case 6 is attached below the center of the upper horizontal frame 5c. A cage sheave (not shown) is rotatably housed in the cage sheave case 6 . The main rope 7 passes through the gap between the two steel members of the upper horizontal frame 5c and is wound around the car sheave. The drive sheave (not shown) of the hoisting machine (not shown) is driven to rotate, so that the main rope 7 travels, and accordingly, the work car device to which the car sheave is attached can move up and down within the hoistway. becomes.

The lower work area 8 includes a lower work floor 80 and fall prevention equipment 81. The lower work floor 80 is constructed using a permanent car floor installed on the lower horizontal frame 5b of the car outer frame 5. The fall prevention equipment 81 includes a protective panel, a handrail, a handle, a skirting board, etc., which are installed to surround the lower work floor 80.

The upper work area 9 includes an upper work floor 90, fall prevention equipment 91, 92, 93, and a protective ceiling 95. As described above, the upper work floor 90 is composed of the pipe 3 and a plurality of scaffold boards 4, . . . . The fall prevention equipment 91 includes a handrail, a handle, etc., which are attached to the left and right vertical frames 5a, 5a of the car outer frame 5. The fall prevention equipment 92 includes a handrail, a handle, etc. attached to one side of the outer periphery of the upper work floor 90. The fall prevention equipment 93 is composed of baseboards. Brackets 94 are attached to both ends of two opposing sides of the baseboard so as to project downward, and each of the two pipes 3 is attached to a pair of brackets 94 at both ends. Supported. A plurality of (eight in this embodiment) scaffolding boards 4, . . . are placed side by side in a planar manner so as to span the two pipes 3, 3.

The fixture 1 according to the first embodiment is used to fix the scaffold board 4. In this embodiment, since the number of scaffold boards 4 is eight, a total of eight fixtures 1 are used, four on one side and four on the other. The procedure for using the fixture 1 is as described above.

The fixing device 1 is installed in such a way that i) all the first brackets 10, . ii) Attach the two pipes 3, 3 so that all the first brackets 10, ... are located inside the pipes 3 (on the longitudinal center side of the scaffold board 4), iii) On one pipe 3, all the first brackets 10,... are installed so as to be located on the outside of the pipe 3, and on the other pipe 3, all the first brackets 10,... are mounted on the inside of the pipe 3. You can arbitrarily select one of the following patterns: Alternatively, in one pipe 3, the orientations of the fixtures 1 may be irregular (for example, the orientations may be alternately reversed).

<Application example of Embodiment 2>
The work cage device shown in FIGS. 11 and 12 uses a fixture 2 according to the second embodiment instead of the fixture 1 according to the first embodiment. Similarly, a total of eight fixtures 2 are used, four on one side and four on the other. The procedure for using the fixture 2 is as described above.

In addition, the way to attach the fixture 2 is as follows: i) In the two pipes 3, 3, all the first support shafts 22, ... are located outside the pipe 3 (on the longitudinal end side of the scaffold board 4). ii) Attach the two pipes 3, 3 so that all the first support shafts 22, ... are located inside the pipes 3 (on the center side in the longitudinal direction of the scaffold board 4), iii) In one pipe 3, all the first support shafts 22, ... are installed so as to be located outside the pipe 3, and in the other pipe 3, all the first support shafts 22, ... are attached to the pipe 3. You can arbitrarily select one of the following patterns: Alternatively, in one pipe 3, the orientations of the fixtures 2 may be irregular (for example, the orientations may be alternately reversed).

<Other embodiments>
Note that the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention.

In the above embodiment, the pipe 3 is used as a straight body that supports the scaffolding boards 4, . However, the present invention is not limited thereto. The straight body may be a solid body such as a round bar or a square bar. Alternatively, the straight body may be a square pipe instead of a round pipe. Alternatively, the straight body may be made of steel such as angle steel.

Furthermore, as long as there is no physical interference, applying the technical elements described above to other embodiments or examples, or replacing the technical elements described above with technical elements related to other embodiments or examples. It is naturally possible to combine the technical elements described above, and this is naturally the intention of the present invention. For example, in the fixture 2 according to the second embodiment, the second support shaft 23 may be eliminated and the configuration regarding the cam lever 13 of the fixture 1 according to the first embodiment may be applied instead of the compression spring 22B. In addition, in the fixture 2 according to the second embodiment, the compression spring 22B is eliminated and the second bracket 21 is tightened by tightening either or both of the nut 22D of the first support shaft 22 and the nut 23B of the second support shaft 23. may be biased toward the first bracket 20 side.

1...Fixing tool, 10...First bracket, 10A...Base, 10Aa...Screw hole, 10B...Vertical piece part, 10C...Abutting part, 10D...Joint part, 11...Second bracket, 11A...Engaging recess, 11B ...Support part, 11Ba...Through hole, 12...Spin shaft, 12A...Shaft part, 12B...Rotating shaft part, 13...Cam lever (operating member), 13A...Cam part, 13Aa...Shaft hole, 13B...Lever part, 14... Interposed member, 2...Fixing tool, 20...First bracket, 20A...Base, 20Aa...Protruding piece, 20Ab...Through hole, 20B...First vertical piece, 20C...Second vertical piece, 21...Second Bracket, 21A...Engagement recess, 21B...First support part, 21Ba...Through hole, 21C...Second support part, 21Ca...Slit, 22...First support shaft, 22A...Bolt, 22B...Compression spring (compression elastic member) ), 22C... washer, 22D... nut, 23... second support shaft, 23A... bolt, 23B... washer, 23C... nut, 3... pipe (straight body), 4... scaffold board, 5... car outer frame, 5a ...Vertical frame, 5b...Lower horizontal frame, 5c...Upper horizontal frame, 6...Cage sheave case, 7...Main rope, 8...Lower work area, 80...Lower work floor, 81...Fall prevention equipment, 9...Upper work area, 90 ...Upper working floor, 91,92,93...Fall prevention equipment, 94...Bracket, 95...Protective ceiling

Claims (8)

A scaffold board fixing device for fixing a scaffold board placed on a straight body to the straight body,
a first bracket having at least a portion that comes into contact with the upper surface of the scaffolding board;
a second bracket comprising an engagement recess that engages the straight body from below and a support portion adjacent to the engagement recess;
A support shaft that projects downward from the first bracket and supports the support portion of the second bracket, the second bracket being rotatable around the axis of the support shaft and movable in the axial direction of the support shaft, and perpendicular to the axis of the support shaft. a support shaft that supports tilting in a direction;
A fixture for a scaffolding board, comprising a biasing means for biasing the second bracket toward the first bracket. The biasing means is rotatably attached to a portion of the support shaft that protrudes below the support portion of the second bracket about a direction perpendicular to the axis of the support shaft, and the distance from the center of rotation to the circumferential surface changes the rotation angle. The scaffold board fixture according to claim 1, wherein the scaffold board fixture is an operating member having a cam surface that increases in accordance with the cam surface. The first bracket includes a base disposed on the lower side of the scaffold board, a vertical piece that protrudes upward from the base and passes through the gap between two adjacent scaffold boards, and a vertical piece extending horizontally from the upper end of the vertical piece. and a contact portion that protrudes and comes into contact with the top surface of the scaffolding board,
The scaffold board fixture according to claim 1, wherein the support shaft projects downward from the base of the first bracket. The biasing means is rotatably attached to a portion of the support shaft that protrudes below the support portion of the second bracket about a direction perpendicular to the axis of the support shaft, and the distance from the center of rotation to the circumferential surface changes the rotation angle. The scaffold board fixture according to claim 3, wherein the scaffold board fixture is an operating member having a cam surface that increases in accordance with the cam surface. 4. The scaffold board fixing device according to claim 3, wherein two or three or more sets of vertical pieces and contact parts of the first bracket are provided corresponding to each of two or three or more adjacent scaffold boards. The first bracket includes a base that straddles two or more adjacent scaffolding boards and abuts the upper surface of the scaffolding board,
The support shaft is a first support shaft that projects downward from the base of the first bracket, passes through the gap between two adjacent scaffolding boards, and further projects below the lower surface of the scaffolding board,
In addition to the first support shaft, between two adjacent scaffolding boards that protrude downward from the base of the first bracket at a predetermined interval from the first support shaft in the direction perpendicular to the longitudinal direction of the base. a second support shaft that passes through the gap and further protrudes below the lower surface of the scaffolding board;
A pair of support parts of the second bracket are provided with the engagement recess in between, the first support part being supported by the first support shaft, and the slit allowing rotation of the second bracket around the axis of the first support shaft. and a second support part supported by the second support shaft,
The biasing means is an elastic member disposed in a portion of the first support shaft that protrudes below the first support portion of the second bracket, and elastically biases the second bracket upward in the axial direction of the first support shaft. The scaffold board fixing device according to claim 1. The base of the first bracket includes a pair of projecting pieces protruding from both side edges in a direction orthogonal to the longitudinal direction of the base,
The scaffold board fixture according to claim 6, wherein the first support shaft is arranged on one of the projecting pieces, and the second support shaft is arranged on the other projecting part. The scaffold board according to any one of claims 1 to 7, wherein the car outer frame is provided with a work floor, and the scaffold board placed on the straight body on the work floor is fixed to the straight body. Elevator work car equipment using fixtures.

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