JP7054949B2 - Scaffolding jack rotation aid - Google Patents

Description

The present invention relates to a rotation assisting tool for a scaffolding jack, and more particularly to a rotation assisting tool for rotating a rotating body in order to adjust the height of the scaffolding jack.

Temporary scaffolding is widely used for aerial work during construction such as new construction, demolition or remodeling of buildings. When installing the scaffolding, a base scaffolding jack is provided at the bottom.
The scaffold jack consists of a substrate placed on a horizontal plane, a columnar strut that is erected on the substrate and has male threads formed on the outer peripheral surface, and a rotating body that can be screwed onto the strut. A handle for rotating the rotating body is provided so as to project horizontally from the rotating body.

A scaffolding pipe is fitted into the support of the scaffolding jack, and the lower end thereof abuts on the hand rotating body, whereby the rotating body supports the scaffolding. By manually turning the rotating body with respect to the column, the height of the upper surface of the rotating body is changed from the substrate. This makes it possible to adjust the height of the scaffolding pipe even when the ground surface is irregular and there is a height difference in the foundation.

However, the length of the support of the scaffold jack in the conventional method is as short as 30 cm, and as long as it is about 1 m, and when the rotating body is rotated to the bottom of the support, the amount of rotation is large. As a result, a lot of time is required for the rotation work, and the burden of work labor is large due to the manual rotation, and measures for reducing the time and labor burden have been required.

The applicant focused on the rotation work when adjusting the height of the scaffolding jack, and developed an auxiliary tool that can perform the rotation work mechanically based on the idea that the time and labor burden due to manual rotation can be reduced. However, it leads to the proposal of the "scaffolding jack rotation assisting tool" according to the present invention.

Japanese Unexamined Patent Publication No. 2012-52366 Japanese Unexamined Patent Publication No. 2008-150150

In view of the above problems, it is an object of the present invention to provide a scaffolding jack rotation assisting tool capable of mechanically performing a rotating work of a rotating body when adjusting the height of the scaffolding jack.

In order to solve the above problems, the present invention is an auxiliary tool for rotating a scaffolding jack, which has a tubular main body having a required length and diameter and having a hollow portion, and a required length and diameter. It is composed of a tubular fitting body having a hollow portion and concentric with the main body and having an enlarged diameter, and the main body is provided with a connection structure to an electric tool at a closed base end and is opened. The base end surface of the fitting body is attached to the tip, and the peripheral wall of the fitting body is cut in the direction of the base end from the opened tip edge to fit the handle provided on the rotating body of the scaffolding jack. The fitting grooves of are formed so as to face each other.
A means is adopted in which the hollow portion of the main body and the hollow portion of the fitting body are communicated with each other by having an opening in the base end surface of the fitting body.

Further, the present invention adopts a means in which a peripheral wall having a predetermined width selected from a portion other than a portion where a fitting groove is formed in the fitting body and a proximal end surface corresponding to the peripheral wall are missing.
Take measures.

Further, the present invention adopts a means in which the connection structure is in the shape of a nut or a hexagonal shaft bit.

Furthermore, the present invention adopts a means in which the fitting groove is formed into a substantially L-shape.

According to the scaffold jack rotation assisting tool according to the present invention, the scaffold jack that can be easily connected to an existing electric tool such as an impact driver or an impact wrench can be mechanically rotated by the electric tool. It is possible, contributes to the reduction of work labor, and has an excellent effect on shortening the work time.

It is an overall perspective view which shows the embodiment of the scaffolding jack rotation assisting tool which concerns on this invention. It is a partial cross-sectional view which shows the embodiment of the scaffolding jack rotation assisting tool which concerns on this invention. It is an overall perspective view which shows the other embodiment of the scaffolding jack rotation assisting tool which concerns on this invention. It is explanatory drawing which shows the use state of the scaffolding jack rotation assisting tool which concerns on this invention.

In the scaffolding jack rotation assisting tool 1 according to the present invention, a fitting body 20 capable of fitting a handle 48 provided on a rotating body 46 of the scaffolding jack 40 is attached to the tip of the main body 10, and a fitting body 20 capable of fitting a handle 48 provided on the rotating body 46 of the scaffolding jack 40 is attached to the base end of the main body 10. The greatest feature is that the rotating body 46 of the scaffolding jack 40 is mechanically made rotatable by the electric tool D by providing the connection structure 30 that can be connected to the electric tool D.
Hereinafter, embodiments of the scaffolding jack rotation assisting tool 1 according to the present invention will be described with reference to the drawings.

The scaffolding jack rotation assisting tool 1 according to the present invention is not limited to the examples described below, and is within the scope of the technical idea of the present invention, that is, a shape and dimensions capable of exhibiting the same action and effect. It can be changed as appropriate within the range of the structure and the like.

1A and 1B are overall perspective views showing an embodiment of a scaffolding jack rotation assisting tool 1 according to the present invention, where FIG. 1A is an upper perspective view and FIG. 1B is a lower perspective view. Further, FIG. 2 is a partial cross-sectional view showing an embodiment of the scaffolding jack rotation assisting tool 1 according to the present invention. Further, FIG. 3 is an overall perspective view showing another embodiment of the scaffolding jack rotation assisting tool 1 according to the present invention.
The scaffolding jack rotation assisting tool 1 according to the present invention is composed of a tubular main body 10 and a fitting body 20.

The main body 10 has a required length and diameter, and is formed into a cylindrical or polygonal cylinder having a hollow portion 12. The material of the main body 10 is not particularly limited, but the scaffolding jack 40 itself is usually made of metal, and is fitted to be described later in order to have enough strength to rotate the metal rotating body 46 and the handle 48. It is preferably made of metal together with the holding body 20 and the connecting structure 30. The length and diameter of the main body 10 are not particularly limited, but the length and diameter of the main body 10 are about the same as those of the support column 44 in view of the entry of the support column 44 into the hollow portion 12 when the scaffolding jack 40 is rotated. It is preferable to have an inner diameter width larger than the diameter width of the support column 44.

A fitting body 20 is provided at the tip of the main body 10, and specifically, a base end surface 26 of the fitting body 20 is attached to the tip of the main body 10. The fitting body 20 has a required length and diameter, is formed into a cylindrical or polygonal cylinder having a hollow portion 22, is concentric with the main body 10, and is the main body 10. It has a large diameter width that is larger than the diameter. The material of the fitting body 20 is not particularly limited, but the scaffolding jack 40 itself is usually made of metal, and has sufficient strength to rotate the metal rotating body 46 and the handle 48. , It is preferable that it is made of metal together with the main body 10 and the connection structure 30 described later. The length and diameter of the fitting body 20 are not particularly limited, but in view of the fact that the rotating body 46 is accommodated in the hollow portion 22 when the scaffold jack 40 is rotated, the vertical body 46 is vertically formed. It is preferable to have an inner diameter width that is longer than the width and larger than the lateral width (outer diameter width) of the rotating body 46.

The main body 10 and the fitting body 20 are completely fixed by welding or the like. Alternatively, a mode in which the main body 10 and the fitting body 20 are integrally molded is also possible. At this time, a hole having substantially the same diameter as the diameter of the main body 10 is opened in the base end surface 26 of the fitting body 20, and the fitting body 20 is fitted with the hollow portion 12 of the main body 10 as shown in FIG. In a state where the hollow portion 22 of the body 20 is communicated with each other, they can be fixed to each other.

A pair of fitting grooves 24 are formed so as to face each other on the peripheral wall of the fitting body 20. The fitting groove 24 is formed in a state of being cut from the opened tip edge of the fitting body 20 in the proximal direction with a required groove width. The fitting groove 24 is a groove for fitting the handle 48 provided on the rotating body 46 of the scaffolding jack 40, and has a groove width into which the handle 48 can be fitted. The shape of the fitting groove 24 is substantially L-shaped as shown in the figure. That is, it is an embodiment in which a predetermined length is cut linearly from the tip edge toward the base end, and then bent from there and linearly cut by a predetermined length in the lateral direction. In this way, by making the fitting groove 24 substantially L-shaped, a hooked portion of the fitted handle 48 is formed, so that the rotating body 46 does not come off when the height is raised upward, and the rotation is reliable. It will contribute to the operation.

As for the form of the fitting body 20, as shown in FIG. 3, it is conceivable that a part of the peripheral wall and the proximal end surface 26 is deleted. The specific defective portion 28 is a portion of the peripheral wall other than the portion where the fitting groove 24 is formed, the peripheral wall portion having a predetermined width selected from the portion, and the base end surface 26 corresponding to the peripheral wall to be defective. Is the part of. That is, in the fitting body 20, the portion required for the rotational movement is the portion where the fitting groove 24 is formed, and as long as the fitting groove 24 has sufficient strength to withstand the rotational movement, there is no particular problem even if the other parts are deleted. .. Therefore, it is possible to adopt a form in which a part of the peripheral wall and the proximal end surface 26 of the fitting body 20 is defective, and by providing the defective portion 28, resource saving and weight reduction can be achieved. , Suitable.

The base end of the main body 10 is closed, and the closed base end is provided with a connection structure 30. The connection structure 30 is for connecting to a power tool D such as an impact driver or an impact wrench, and is integrally molded with the main body 10 or integrally joined by welding or the like. The connection structure 30 is a structure that can be connected to the insertion angle D1 (chuck, sleeve, etc.) of the power tool D, and may be, for example, a nut shape or a hexagonal shaft bit shape. It should be noted that the connection structure 30 is not directly connected to the insertion angle D1 of the power tool D, but an arbitrary socket may be interposed between the connection structure 30 and the insertion angle D1. The material of the connection structure 30 is not particularly limited, but the scaffolding jack 40 itself is usually made of metal, and the main body thereof has enough strength to rotate the metal rotating body 46 and the handle 48. It is preferably made of metal together with 10 and the fitting body 20.

Next, the usage mode of the scaffolding jack rotation assisting tool 1 according to the present invention configured as described above will be described. FIG. 4 is an explanatory diagram showing a usage mode of the scaffolding jack rotation assisting tool 1 according to the present invention.
First, as a configuration of the scaffolding jack 40, a columnar column 44 is erected on a substrate 42 placed at a predetermined position, and a male screw is formed on the outer peripheral surface of the column 44, and a rotating body having a female thread. 46 is screwed into the support column 44.
By inserting the scaffolding jack rotation assisting tool 1 from the upper end side of the support column 44, the pair of handles 48 provided on the rotating body 46 are fitted into the fitting groove 24 provided in the fitting body 20. At this time, the rotating body 46 is housed in the hollow portion 22 of the fitting body 20. Further, the support column 44 enters the hollow portion 22 of the fitting body 20 and the hollow portion 12 of the main body 10, and then connects the insertion angle D1 of the power tool D to the connection structure 30. At this time, if necessary, an appropriate socket is inserted between the connection structure 30 and the insertion angle D1.
Then, by starting the power tool D, the scaffolding jack rotation assisting tool 1 rotates, the handle 48 fitted in the fitting groove 24 is pushed accordingly, and the rotating body 46 rotates.

In this way, the rotational force of the electric tool D is transmitted from the insertion angle D1 to the main body 10 via the connection structure 30 to rotate the fitting body 20 at the tip, and to the fitting groove 24 of the fitting body 20. When the fitted handle 48 is pushed to rotate the rotating body 46, the height position of the rotating body 46 with respect to the support column 44 changes up and down, and the height of the scaffold jack 40 is adjusted.
The rotation direction is determined by the direction of the male screw formed on the outer peripheral surface of the support column 44 and the female screw of the rotating body 46, but is generally shown in FIG. 4 (b) when rotated clockwise. As shown in FIG. 4A, when the rotating body 46 moves downward with respect to the support column 44 and is rotated counterclockwise, the rotating body 46 moves upward with respect to the support column 44.

The drawing shows a case where the fitting groove 24 is formed into a substantially L shape. By making the fitting groove 24 substantially L-shaped, as shown in FIG. 4A, when the rotating body 46 is rotated counterclockwise and moved upward, the handle 48 is formed in the fitting groove 24. Since the handle 48 is fitted into the laterally bent portion and the lower surface portion of the handle 48 comes into contact with the fitting groove 24, the handle 48 does not come off from the fitting groove 24 and moves upward while being pulled from below. This will contribute to reliable rotational operation.

On the contrary, when the rotating body 46 is rotated clockwise and moved downward, the handle 48 is located at the bent portion in the fitting groove 24 as shown in FIG. 4 (b), and the handle 48 The upper surface portion comes into contact with the fitting groove 24, but since the handle 48 moves downward while being pushed from above, the handle 48 does not come off from the fitting groove 24, which contributes to a reliable rotational operation. Will be.

Although the scaffolding jack rotation assisting tool 1 according to the present invention is not shown, it is conceivable to adopt a swivel type structure. That is, a structure that makes the main body 10 and the cylindrical body rotatable by providing a cylindrical body having an inner diameter one size larger than the outer diameter of the main body 10 on the outer periphery at a predetermined intermediate position in the length direction of the main body 10. Is. The length of the main body 10 is not particularly limited as described above, but if it is long, there is a risk that the main body 10 will be shaken during rotation and lack stability. Therefore, by adopting such a swivel type structure, by grasping the cylindrical body with one hand of the operator, it is possible to suppress blurring in the rotation of the main body 10 and perform stable work.

The scaffolding jack rotation assisting tool according to the present invention can mechanically perform the rotating work of the rotating body when adjusting the height of the scaffolding jack, which has been performed manually, by using an electric tool. It has an excellent effect of reducing work labor and shortening work time, and it is considered that the industrial utility of the present invention is great.

1 Scaffolding jack Rotation aid 10 Main body 12 Hollow part 20 Fitting body 22 Hollow part 24 Fitting groove 26 Base end surface 28 Missing part 30 Connection structure 40 Scaffolding jack 42 Board board 44 Strut 46 Rotating body 48 Handle D Electric tool D1 Insertion angle

Claims (3)

It is an auxiliary tool for rotating the scaffolding jack,
A tubular body having a required length and diameter and having a hollow portion, and a tubular fitting body having a required length and diameter and having a hollow portion and concentric with the main body and having an expanded diameter. Consists of
The main body is provided with a connection structure to a power tool at the closed base end, and the base end surface of the fitting body is attached to the opened tip.
A pair of fitting grooves for fitting the handle provided on the rotating body of the scaffolding jack are formed so as to face each other in the peripheral wall of the fitting body, which is cut in a substantially L shape from the opened tip edge toward the base end. Made up of
A scaffolding jack rotation assisting tool having an opening in the base end surface of the fitting body so that the hollow portion of the main body and the hollow portion of the fitting body are communicated with each other. The scaffolding jack rotation assist according to claim 1, wherein a peripheral wall having a predetermined width selected from a portion other than a portion where a fitting groove is formed in the fitting body and a proximal end surface corresponding to the peripheral wall are missing. Ingredients. The scaffolding jack rotation assisting tool according to claim 1 or 2, wherein the connection structure has a nut shape or a hexagonal shaft bit shape.

Images