JP2018044392A - Length adjustment tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a length adjustment tool that makes it difficult for a suspender to slip out from a hook, and facilitates length adjustment without causing corotation of the suspender.SOLUTION: The present invention provides a length adjustment tool A including a body part 1 having a pair of hooks 10 for hooking suspenders C1, C2 and C3. The body part 1 comprises a shaft body 11 having threaded screw parts 11a and 11b and movable nut parts 12a and 12b screwed in the screw parts 11a and 11b. A hook 10 extending in a direction to perpendicular to a longitudinal direction of the shaft part 11 is mounted on the movable nut parts 12a and 12b, and the movable nut parts 12a and 12b are movable along the shaft body 11 by rotating the shaft body 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a length adjuster, and more particularly, to a length adjuster in which a hanging tool is difficult to come off from a hook, the hanging tool does not circulate, and the length can be easily adjusted.

In temporary construction, so-called scaffolding plates are laid in order to secure passages and scaffolds when workers perform work.
In laying the scaffolding plate, for example, when the scaffolding cannot be assembled from below, a so-called suspension scaffolding that supports the scaffolding plate by hanging from above is employed.

  As such a suspended scaffold, a horizontal support member is suspended by a plurality of suspensions attached to the ceiling, and a scaffold plate is installed on the horizontal support member, or one end of the horizontal support member is attached to a wall surface. Further, there may be mentioned a structure in which the other end of the horizontal support member is suspended by a lifting tool attached to a wall surface above that, and a scaffolding plate is installed on the horizontal support member.

  By the way, in the construction work of the suspension scaffold, it is extremely important for work safety to install the horizontal support material horizontally. Therefore, in a suspension scaffold that does not support from below, a length adjuster that finely adjusts the length of the suspension is attached to the suspension to make the horizontal support member horizontal.

  Examples of such length adjusters include a pair of hooks, a chain (hanging tool) having one end connected to one of the pair of hooks, and a chain connected to the other of the pair of hooks. 2. Description of the Related Art A lashing device including a turnbuckle for tensioning is known (for example, see Patent Document 1).

JP 2006-105214 A

However, since the conventional length adjusting tool including the lashing device described in Patent Document 1 has a structure in which the hook of the turnbuckle protrudes in the longitudinal direction of the hanging tool, the length adjusting tool is inclined during the operation. In such a case, there is a risk that the hanging tool may come off from the hook due to deformation of the hook portion or the like during overload.
Moreover, since the conventional length adjusting tool is arrange | positioned in series with respect to a hanging tool, there exists a fault that the lifting tool becomes obstructive and it is difficult to adjust the length with an electric tool etc.
Further, when the turnbuckle is rotated, there is a disadvantage that a so-called rotation occurs in which the hanger itself attached to the turnbuckle also rotates.

  The present invention has been made in view of the above circumstances, and provides a length adjusting tool in which a hanging tool is difficult to be detached from a hook, the hanging tool does not rotate, and the length can be easily adjusted. Objective.

  The present inventor has intensively studied to solve the above-mentioned problems. As a result, a hook extending in a direction perpendicular to the longitudinal direction of the shaft body is attached to the moving nut portion, and the moving nut portion is moved along the shaft body. Thus, the inventors have found that the above problems can be solved, and have completed the present invention.

  The present invention is (1) a length adjuster including a main body portion having a pair of hooks for hooking a hanger, wherein the main body portion includes a shaft body having a threaded thread portion, and a screw portion. And a hook that extends in a direction perpendicular to the longitudinal direction of the shaft body is attached to the moving nut portion. By rotating the shaft body, the moving nut portion is It exists in a length adjuster that can move along the body.

  The present invention is (2) a length adjuster comprising a main body portion having a pair of hooks for hooking a hanger, wherein the main body portion has a left screw portion and a right screw portion in which screws in opposite directions are cut. And a pair of moving nut portions respectively screwed into the left screw portion and the right screw portion, and the moving nut portions each have hooks extending in a direction perpendicular to the longitudinal direction of the shaft body. Is attached, and the shaft body is rotated, so that the pair of moving nut portions can be moved in the direction approaching or separating from each other along the shaft body.

  The present invention (3) is further provided with an outer support frame in which the main body portion is accommodated, and the outer support frame is for restraining the rotation of the moving nut portion, as described in (1) or (2) above. Lies in the length adjuster.

  The present invention resides in (4) the length adjusting tool according to the above (3), wherein the outer support frame is formed with an upper opening that is opened upward to project the hook.

  In the present invention, (5) the outer support frame is further formed with a lower opening that opens downward so as to face the upper opening, and the moving nut protrudes downward from the lower opening, In the length adjuster described in the above (4), a protruding portion extending in the outer direction is provided at the lower end of the moving nut portion, and the protruding portion is hooked on the outer support frame.

  This invention exists in the length adjuster as described in any one of said (1)-(5) by which a pair of fixing nut part is attached to the both ends of the shaft body (6).

  In the present invention, (7) In the state where the rotation of the moving nut portion is restrained, the angle formed by the longitudinal direction of one hook and the longitudinal direction of the other hook is 5 to 15 °. It exists in the length adjustment tool as described in any one of (6).

  The present invention is used in a suspension scaffold including (8) a horizontal support material and a hanging tool for suspending the horizontal support material. The length adjuster according to any one of (1) to (7), which is parallel to the side view.

In the length adjuster of the present invention, since the hook is attached to the moving nut portion so as to extend in the direction perpendicular to the longitudinal direction of the shaft body, the length adjustment in which the conventional hook protrudes in the longitudinal direction of the suspension tool. It is harder for the hanging tool to come off the hook than the tool. In other words, since the hanging tool is hooked at 90 ° with respect to the hook, the hanging tool is hooked even when the length adjusting tool is inclined with respect to the longitudinal direction of the hanging tool during the work. Hard to come off.
Moreover, since the length adjuster of this invention attaches a hanger to the hook extended in the orthogonal | vertical direction with respect to the longitudinal direction of a shaft, the longitudinal direction of the main-body part of a length adjuster and the longitudinal direction of a hanger are It becomes a parallel relationship in a side view. For this reason, the hanging tool does not get in the way during the length adjustment work. As a result, it is possible to work in a narrow portion, it is easy to use an electric tool or the like, and work efficiency is improved.
Furthermore, in the length adjuster of the present invention, the shaft is rotated so that the moving nut portion to which the hook is attached moves linearly along the shaft. Will not occur.

  In addition to this, in the length adjuster of the present invention, a moving nut portion is screwed into each of the left screw portion and the right screw portion of the shaft body, and by rotating the shaft body, a pair of moving nut portions However, when it is possible to move along the shaft body in a direction toward or away from each other, the moving speed of the moving nut portion is doubled, so that the length adjustment work can be performed efficiently.

The length adjuster of the present invention further includes an outer support frame, and when the main body is housed in the outer support frame, the screwed portion in which the moving nut portion is screwed into the screw portion is formed by the outer support frame. Since it will be covered, it can prevent that a hand and clothes touch a screwed part directly. This makes it possible to perform the length adjustment work safely.
Moreover, when an outer support frame restrains rotation of a movement nut part, the surroundings with a shaft body and a movement nut part can be prevented.

In the length adjuster of the present invention, when the outer support frame has an upper opening that opens upward, there is an advantage that the main body can be easily inserted into the outer support frame.
Moreover, since a hook will protrude, it is easy to hook a hanging tool on the hook.

  In the length adjuster of the present invention, the outer support frame is further formed with a lower opening that opens downward, protrudes downward from the lower opening, and the lower end of the moving nut portion has an outer side. When the protruding portion extending in the direction is provided and the protruding portion is hooked on the outer support frame, the shaft body can be prevented from being deformed by the action of the bending moment applied to the shaft body by the moving hook portion. .

  In the length adjuster according to the present invention, when a pair of fixed nut portions are attached to both ends of the shaft body, the fixed nut portion functions as a stopper, so that the moving nut portion is prevented from being detached from the shaft body. can do.

  In the length adjuster of the present invention, when the angle between the longitudinal direction of one hook and the longitudinal direction of the other hook is 5 to 15 ° in a state where the rotation of the moving nut portion is constrained, The main body portion is slightly inclined due to the tension of the lifting tool that pulls the hook. Thereby, there exists an advantage that it becomes easy to rotate a shaft body in length adjustment work.

When the length adjuster of the present invention is used in a suspension scaffold, the horizontal support member can be kept horizontal relatively easily by slightly moving the moving nut portion. For this reason, temporary work can be safely performed by installing a scaffolding plate, a conveyor frame, or the like on the horizontal support member.
Moreover, since the longitudinal direction of the main body is parallel to the longitudinal direction of the hanger in a side view, the length adjustment operation can be performed safely and the operation is easy.

FIG. 1A is a top view showing a length adjuster according to the present embodiment, FIG. 1B is a side view thereof, and FIG. 1C is a view of the length adjuster of FIG. It is sectional drawing cut | disconnected by -X surface. FIGS. 2A and 2B are side views showing a state in which a hanging tool is attached to the length adjuster according to this embodiment and the hook is moved. (A) of FIG. 3 is a top view which shows the main-body part of the length adjustment tool which concerns on this embodiment, (b) is the side view, (c) is length adjustment of (b). It is sectional drawing which cut | disconnected the tool by the YY surface. 4A is a top view showing an outer support frame of the length adjuster according to the present embodiment, FIG. 4B is a side view thereof, and FIG. 4C is an outer support of FIG. It is sectional drawing which cut | disconnected the frame at the Y1-Y1 surface. (A) of FIG. 5 is the schematic which shows the example used for the suspension scaffold temporarily installed in the tunnel for the length adjustment tool concerning this embodiment, (b) is the elements on larger scale of (a). 6A is a top view showing an outer support frame of a length adjuster according to another embodiment, FIG. 6B is a side view thereof, and FIG. 6C is an outside view of FIG. It is sectional drawing which cut | disconnected the support frame in the Y2-Y2 surface. FIG. 7 is a front view for explaining the protruding directions of the hooks attached to the moving nut portion in the length adjuster according to another embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

The length adjusting tool according to the present invention is a device for adjusting the length of the hanger and the tension applied to the hanger by adjusting the length between the hanger.
Here, the hanging tool is not particularly limited, and examples thereof include a chain in which annular parts are continuously connected, and a rope, a wire, a tie rod, and the like having an attachment part such as an annular part at the tip.

FIG. 1A is a top view showing a length adjuster according to the present embodiment, FIG. 1B is a side view thereof, and FIG. 1C is a view of the length adjuster of FIG. It is sectional drawing cut | disconnected by -X surface.
As shown to (a)-(c) of FIG. 1, the length adjustment tool A which concerns on this embodiment has the main-body part 1 which has a pair of hook 10 for hooking the suspension tool which is not shown in figure, and the main-body part 1. And an outer support frame 2 for storage.

In the length adjusting tool A, a hanging tool is hooked on the pair of hooks 10.
Here, the pair of hooks 10 can move linearly in the longitudinal direction of the main body 1 as will be described later. For this reason, in the length adjuster A, by moving the pair of hooks 10, the length of the hanger hooked on the hook 10 or the length between the hanger hooks hooked on the hook 10 is simplified. Can be adjusted.
In the length adjuster A, as described above, since the pair of hooks 10 move linearly, the suspension tool does not rotate.

FIGS. 2A and 2B are side views showing a state in which a hanging tool is attached to the length adjuster according to this embodiment and the hook is moved.
In the length adjusting tool A shown in FIG. 2A, the pair of hooks 10 are respectively hooked on one hanging tool C1.
Then, by moving the pair of hooks 10 together with the pair of hooks 10 hooked to the suspension tool C1, for example, the length of the suspension tool C1 is finely adjusted by moving the pair of hooks 10 closer to or away from each other. Is possible.
As described above, the length adjusting tool A can be added later to the hanging tool C1 already attached to the hanging scaffold or the like, and the hook 10 is moved from that state, whereby the hanging tool C1 itself. The length of can be adjusted.

On the other hand, in the length adjuster A shown in FIG. 2B, separate hanging tools C21 and C22 are hooked on the pair of hooks 10, respectively.
Then, by moving the pair of hooks 10 together while the pair of hooks 10 are hooked on the separate suspension tools C21 and C22, for example, the pair of hooks 10 are moved closer to or away from each other. It becomes possible to finely adjust the length between the two.
Thus, the length adjuster A can connect the separate suspension tools C21 and C22 to each other at the time of construction. Further, by moving the hook 10 from the state, the length adjustment tool A can be connected between the suspension tools C21 and C22. The length (distance) can be adjusted.

  Returning to FIG. 1, in the length adjuster A, the main body 1 is detachable from the outer support frame 2. For this reason, for example, according to the magnitude | size of the tension | tensile_strength provided to a hanging tool, the main-body part 1 attached to the outer support frame 2 can be replaced | exchanged suitably. Incidentally, it is desirable to use the main body 1 having a larger shaft body and a larger tensile strength as the tension is larger.

Next, the main body 1 and the outer support frame 2 will be described.
(A) of FIG. 3 is a top view which shows the main-body part of the length adjustment tool which concerns on this embodiment, (b) is the side view, (c) is length adjustment of (b). It is sectional drawing which cut | disconnected the tool by the YY surface.
As shown in FIGS. 3A to 3C, the main body 1 has a left screw portion 11a (hereinafter also referred to as “left screw portion 11a”) and a right screw portion 11b on both sides of the adjustment portion 11c. (Hereinafter also referred to as “right screw portion 11b”), a rod-shaped shaft body 11, a moving nut portion 12a (hereinafter also referred to as “left moving nut portion 12a”) screwed into the left screw portion 11a, and a right side. A moving nut portion 12b (hereinafter also referred to as “right moving nut portion 12a”) screwed into the screw portion 11b, and hooks 10 respectively provided on the upper surfaces of the left moving nut portion 12a and the right moving nut portion 12b. .

Here, the left screw portion 11a and the right screw portion 11b are threaded in directions opposite to each other so as to be symmetric with respect to the adjustment portion 11c.
Further, the left moving nut portion 12a and the right moving nut portion 12b have a hollow rectangular parallelepiped shape having hollow portions, and the respective hollow portions are respectively matched with the corresponding left screw portion 11a and right screw portion 11b. And are threaded in opposite directions. Therefore, the left moving nut portion 12a in which the hollow portion is screwed into the left screw portion 11a of the shaft body 11, and the right moving nut portion 12b in which the hollow portion is screwed into the right screw portion 11b of the shaft body 11 are By rotating 11, the shaft 11 moves in a direction approaching or separating from the longitudinal direction of the shaft body 11.

  In the main body 1, as described above, the J-shaped hooks 10 extending in the direction perpendicular to the longitudinal direction of the shaft body 11 face each other on the upper surfaces of the left moving nut portion 12a and the right moving nut portion 12b. Is attached. For this reason, even if it is a case where the length adjustment tool A inclines with respect to the longitudinal direction of a suspension tool during a work | work, a suspension tool does not come off from the hook 10 easily.

  In the length adjuster A, the hook 10 is attached so as to extend in a direction perpendicular to the longitudinal direction of the shaft body 11. For this reason, the longitudinal direction of the hanging tool attached to the hook 10 and the longitudinal direction of the main body portion of the main body portion 1 of the length adjuster A are in a parallel relationship in a side view (see FIG. 2). Thereby, in the length adjustment tool A, there exists an advantage that a hanging tool does not become obstructive in the case of length adjustment work.

In the length adjuster A, projecting portions 12a1 extending outward are provided on both sides of the lower end of the left moving nut portion 12a (see (b) and (c) of FIG. 3). Protruding portions 12b1 extending in the outward direction are provided on both sides of the lower end (see FIG. 3B).
Here, in the length adjuster A, both the protrusions 12a1 and 12b1 are hooked on the outer support frame 2 (see FIG. 1B). As a result, when the hanging tool is hooked on the hook 10 and tension is applied to the hook 10, the bending moment that the left moving hook portion 12 a and the right moving hook portion 12 b apply to the shaft body 11 is applied to the projecting portions 12 a 1 and 12 b 1. Can be reduced by contacting the outer support frame 2. As a result, the shaft body 11 can be prevented from being deformed.

The main body 1 has a pair of fixing nuts 13 attached and fixed to both ends of the shaft body 11. That is, in the main body 1, the shaft body 11 and the fixed nut portion 13 are integrated, and the shaft body 11 is rotated by rotating the fixed nut portion. In addition, it is easy to rotate the shaft body 11 not by directly rotating the shaft body 11 itself but by rotating it through the fixed nut portion.
Accordingly, in the length adjuster A, for example, the shaft body 11 is rotated together by rotating the fixed nut portion 13 using an electric tool or the like, and based on that, the left moving nut portion 12a and the right moving nut portion 12a The moving nut portion 12b moves.
In addition, since the fixed nut portion 13 is attached to both sides of the shaft body 11, it also serves as a stopper that prevents the left moving nut portion 12 a and the right moving nut portion 12 b from coming off the shaft body 11.

4A is a top view showing an outer support frame of the length adjuster according to the present embodiment, FIG. 4B is a side view thereof, and FIG. 4C is an outer support of FIG. It is sectional drawing which cut | disconnected the frame at the Y1-Y1 surface.
As shown in FIGS. 4A to 4C, the outer support frame 2 includes a hollow housing portion 20 and hollow end frame portions 21 provided on both sides of the housing portion 20. doing.
Moreover, the housing | casing part 20 between the said end frame parts 21 has a through-hole in a longitudinal direction. That is, the housing 20 is formed with an upper opening 22 that opens upward to project the hook 10 described above, and a lower opening that opens downward continuously from the upper opening 22.
In addition, the upper opening part 22 and the lower opening part are provided in the rectangular shape so that the longitudinal direction may be followed by the housing part 20. As shown in FIG.

In the length adjuster A, the outer support frame 2 accommodates the main body 1 in the housing 20. As a result, the outer support frame 2 covers the periphery of each screwed portion of the left moving nut portion 12a and the right moving nut portion 12b screwed into the corresponding left screw portion 11a and right screw portion 11b. Therefore, it can prevent that a hand and clothes touch a screwed part directly. This makes it possible to perform the length adjustment work safely.
Further, it is possible to prevent the left screw portion 11a or the right screw portion 11b of the shaft body 11 from becoming dirty or the left screw portion 11a or the right screw portion 11b from being deformed by an external impact.

  In the length adjuster A, the hollow portion of the housing portion 20 has a shape (a rectangular parallelepiped shape) corresponding to the shape of the left moving nut portion 12a and the right moving nut portion 12b. That is, in the length adjuster A, the left moving nut portion 12a and the right moving nut portion 12b are supported by the outer support frame 2. As a result, the left moving nut portion 12a and the right moving nut portion 12b can move in the longitudinal direction of the shaft body 11, but the left moving nut portion 12a and the right moving nut portion 12b rotate around the shaft. The outer support frame 2 is restrained by the housing part 20. As a result, in the length adjuster A, even if the shaft body 11 is rotated, the rotation of the left moving nut portion 12a and the right moving nut portion 12b is restrained by the outer support frame 2. Rotation with the shaft body 11 (rotation) can be prevented.

In the length adjuster A, the vertical width H1 of the housing portion 20 is smaller than the vertical width H2 of the left moving nut portion 12a and the right moving nut portion 12b (see FIG. 3C). .
Further, the left moving nut portion 12a and the right moving nut portion 12b protrude upward from the upper opening 22 and protrude downward from the lower opening (see FIG. 1B).
By these things, in the length adjustment tool A, it becomes easy to insert the main-body part 1 in the outer support frame 2, and the movement of the left movement nut part 12a and the right movement nut part 12b also becomes smooth. Moreover, since the hook 10 protrudes, it is easy to hook a hanging tool on the hook 10.

  In the length adjuster A, the outer support frame 2 is configured to grip both sides of the main body portion 1 with the end frame portions 21. Thereby, in the length adjustment tool A, it can prevent that the main-body part 1 remove | deviates from the outer support frame 2 inadvertently.

Next, a method for assembling the length adjuster A using the main body 1 and the outer support frame 2 will be described.
First, the left moving nut portion 12a is screwed into the left screw portion 11a and the right moving nut portion 12 is screwed into the right screw portion 11b of the shaft body 11 in which the left screw portion 11a and the right screw portion 11b are formed.
Then, one end of the shaft body 11 in a state in which the left moving nut portion 12a and the right moving nut portion 12b are screwed is hooked on one end frame portion 21, and the shaft body is so formed that the hook 10 protrudes from the opening portion 22. 11. The left moving nut portion 12a and the right moving nut portion 12b are inserted into the housing portion 20, and the other end of the shaft body 11 is hooked on the end frame portion 21 on the other side. Thereby, the main body 1 is stored in the outer support frame 2.
Finally, fixing nut portions 13 are attached and fixed to both ends of the shaft body 11 (see FIGS. 1A and 1B).
Thus, the length adjuster A can be easily assembled from the main body 1 and the outer support frame 2.

Next, an example in which the length adjuster A is used as a suspension scaffold will be described.
(A) of FIG. 5 is the schematic which shows the example used for the suspension scaffold temporarily installed in the tunnel for the length adjustment tool concerning this embodiment, (b) is the elements on larger scale of (a). In FIG. 5B, the scaffold plate 32 is omitted.
As shown in FIG. 5A, the length adjuster A includes a horizontal support member 31, a suspension tool C <b> 3 that suspends the horizontal support member 31, and a scaffold plate 32 disposed on the horizontal support member 31. Are attached to a suspension tool C3 of a suspension scaffold 30 provided with.

Here, as shown in FIG. 5B, the horizontal support member 31 is made of a stretchable steel material, and one end is fixed to a height-adjustable wall fixing jig 33 attached to the wall surface T of the tunnel. The eyebolt IB is fixed to the other end.
The hanging tool C3 has a loop shape, one end is hooked on a hook F anchored to the wall surface T of the tunnel above the horizontal support member 31, and the other end is inserted into the eyebolt IB. Yes.
Moreover, the length adjusting tool A is attached to one side of the double hanging tool C3.

In the suspension scaffold 30, the left moving nut portion and the right moving nut portion are slightly moved by rotating the fixed nut portion 13 of the length adjuster A. Therefore, the length of the lifting device C1 can be finely adjusted. it can. Thereby, it can finely adjust so that the horizontal support material 31 may become horizontal.
Further, as described above, since the longitudinal direction of the main body portion of the length adjusting tool A is parallel to the longitudinal direction of the hanging tool C3 in a side view, the length adjustment for rotating the fixing nut portion 13 is performed. Work can be performed safely and is easy to work.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.

  For example, the length adjuster A according to the present embodiment includes the main body 1 and the outer support frame 2 in which the main body 1 is accommodated, but the outer support frame 2 is not necessarily essential.

In the length adjuster A according to the present embodiment, the main body 1 is screwed into the rod-like shaft body 11 having the left screw portion 11a and the right screw portion 11b on both sides of the adjustment portion 11c, and the left screw portion 11a. The left moving nut portion 12a, the right moving nut portion 12a screwed into the right screw portion 11b, and the hooks 10 respectively provided on the upper surfaces of the left moving nut portion 12a and the right moving nut portion 12b. However, the left screw portion 11ab or the right screw portion 11 and the left moving nut portion 12a or the right moving nut portion 12a corresponding thereto may not be provided.
For example, the main body portion has a rod-shaped shaft body having a screw portion on one side of the adjustment portion, and a moving nut portion screwed into the screw portion, and the moving nut portion includes a longitudinal direction of the shaft body. A hook extending in the vertical direction is attached, and a hook extending in a direction perpendicular to the longitudinal direction of the shaft body is also attached to the other side of the shaft body. The structure may be movable along the shaft body.

  In the length adjuster A according to the present embodiment, the left moving nut portion 12a and the right moving nut portion 12a have a hollow rectangular parallelepiped shape having a hollow portion, but are not limited thereto.

  In the length adjuster A according to the present embodiment, protruding portions 12a1 extending outward are provided on both sides of the lower end of the left moving nut portion 12a, and outward directions are provided on both sides of the lower end of the right moving nut portion 12b. However, the protrusions 12a1 and 12b1 are not necessarily essential.

In the length adjuster A according to the present embodiment, the structure of the outer support frame 2 is not limited to that shown in (a), (b), and (c) of FIG.
6A is a top view showing an outer support frame of a length adjuster according to another embodiment, FIG. 6B is a side view thereof, and FIG. 6C is an outside view of FIG. It is sectional drawing which cut | disconnected the support frame in the Y2-Y2 surface.
As shown in FIGS. 6A to 6C, the outer support frame 4 includes a housing part 40 composed of a pair of T-shaped frames, and hollow ends provided on both sides of the housing part 40. Frame portion 41.
In addition, the housing portion 40 between the end frame portions 41 has an opening portion 42 opened upward for projecting the hook 10 described above, and a lower opening opened downward so as to face the upper opening portion. The part is formed.
The upper opening 42 and the lower opening are provided in a rectangular shape along the longitudinal direction of the housing 40.

Here, the housing part 40 of the outer support frame 4 is formed by subjecting a metal plate such as a steel plate, stainless steel, or titanium to a pressing process or the like.
Thus, by using these metal plates as the casing portion 40, the outer support frame 4 becomes excellent in corrosion resistance.

In the length adjuster A according to the present embodiment, the vertical width H1 of the casing portion 20 is smaller than the vertical width H2 of the left moving nut portion 12a and the right moving nut portion 12b. It is not limited to.
Further, the left moving nut portion 12a and the right moving nut portion 12b protrude upward from the upper opening 22 and protrude downward from the lower opening, but only one of them protrudes. There may be, and none may protrude.

In the length adjuster A according to the present embodiment, the pair of hooks 10 protrude in the same direction when viewed from the front, but may be in different directions.
FIG. 7 is a front view for explaining a protruding direction of a hook attached to a moving nut portion in a length adjuster according to another embodiment. In addition, description of a fixing nut part is abbreviate | omitted.
As shown in FIG. 7, in the length adjuster B, the pair of hooks 10 a protrude in different directions such that the phases are shifted in front view. At this time, the angle θ formed by the protruding direction of the hook 10a attached to the moving nut portion 15 on one side and the protruding direction of the hook 10a attached to the moving nut portion 15 on the other side is 5 to 15 °. Is preferred.
In this case, when the hanging tool hooked on both hooks 10a is pulled from both sides, the main body portion is slightly inclined. As a result, since one side of the fixing nut portion is slightly directed toward the front side, there is an advantage that the shaft body can be easily rotated in the length adjusting operation.

  In the suspension scaffold 30 shown in FIG. 5, the length adjuster A according to this embodiment is attached to one side of a loop-shaped (double) suspension. It is of course possible to attach it to a (single) suspension.

The length adjusting tool A according to the present invention is used, for example, in order to finely adjust the length of the hanging tool in laying construction of a hanging scaffold.
According to the length adjuster A according to the present invention, it is difficult for the suspension tool to come off the hook, the rotation of the suspension tool does not occur, and the length adjustment work is easy.

DESCRIPTION OF SYMBOLS 1 ... Main-body part 10,10a ... Hook 11 ... Shaft body 11a ... Left-hand thread part (screw part)
11b ... right-hand thread (thread)
11c: Adjusting part 12a: Left moving nut part (moving nut part)
12a1, 12b1... Projection portion 12b... Right moving nut portion (moving nut portion)
DESCRIPTION OF SYMBOLS 13 ... Fixed nut part 15 ... Moving nut part 2, 4 ... Outer support frame 20, 40 ... Case part 21, 41 ... End frame part 22, 42 ... Upper opening part 30 ... Suspended scaffold 31 ... Horizontal support material 32 ... Scaffold plate A ... Length adjuster C1, C2, C3 ... Suspension tool H1, H2 ... Width θ ... Angle

Claims (8)

A length adjuster comprising a main body having a pair of hooks for hooking a hanger,
The main body portion includes a shaft body having a threaded portion and a moving nut portion screwed into the threaded portion,
The hook that extends in a direction perpendicular to the longitudinal direction of the shaft body is attached to the moving nut portion,
A length adjuster in which the moving nut portion is movable along the shaft body by rotating the shaft body. A length adjuster comprising a main body having a pair of hooks for hooking a hanger,
The body portion includes a shaft body having a left screw portion and a right screw portion that are threaded in opposite directions, and a pair of moving nut portions screwed into the left screw portion and the right screw portion, respectively. Have
The hooks extending in the direction perpendicular to the longitudinal direction of the shaft body are attached to the moving nut portions,
A length adjuster in which a pair of the moving nut portions are movable in a direction toward or away from each other along the shaft by rotating the shaft. An outer support frame in which the main body is stored;
The length adjusting tool according to claim 1 or 2, wherein the outer support frame is for restraining rotation of the movable nut portion.   The length adjustment tool according to claim 3, wherein an upper opening is formed in the outer support frame so as to open upward so as to project the hook. The outer support frame is further formed with a lower opening that opens downward so as to face the upper opening,
The moving nut portion protrudes downward from the lower opening,
The lower end of the moving nut part is provided with a protrusion extending in the outer direction,
The length adjuster according to claim 4, wherein the protrusion is hooked on the outer support frame.   The length adjusting tool according to any one of claims 1 to 5, wherein a pair of fixing nut portions are attached to both ends of the shaft body.   7. The angle between the longitudinal direction of one of the hooks and the longitudinal direction of the other hook is 5 to 15 ° in a state where the rotation of the moving nut portion is constrained. The length adjuster according to item. It is used for a suspension scaffold comprising a horizontal support material and a suspension for suspending the horizontal support material,
By attaching to the hanger,
The length adjuster according to any one of claims 1 to 7, wherein a longitudinal direction of the main body is parallel to the longitudinal direction of the hanger in a side view.

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