JPH04194173A - Coupler rotating machine of screw coupler type reinforcing bar joint - Google Patents

Abstract

PURPOSE:To promote the coupling work efficiency by providing a belt driven with a motor to a groove face having a V-shaped section and, at the same time, providing handle sections to a casing, and pushing the belt against the peripheral surface of a coupler to rotate. CONSTITUTION:A belt 1 driven by a motor 6 is provided to a groove face having a V-shaped section. A roller instead of the belt can be available. Handles 8 and 9 are provided to a casing 4. The belt 1 is pushed against the peripheral surface of a screw type coupler 52 connecting reinforcing bars 50 and 51 to rotate. According to the constitution, the working hours can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to the rotation of a coupler when connecting reinforcing bars to each other with a threaded coupler type reinforcing joint in the construction of reinforced concrete or steel-framed reinforced concrete structures. It is attached to a hand-held coupler rotator used for operation.

2. Description of the Related Art Conventionally, it is well known to use threaded coupler type reinforcing bar joints to join reinforcing bars to each other. As illustrated in FIGS. 2 and 5, this means that two reinforcing bars 50.
The end of the cylindrical coupler 51 is threaded and is screwed into a cylindrical coupler 52 having a female thread of common specifications.

Problems to be Solved by the Invention Conventionally, screw coupler type reinforcing bar joints have all been used by workers who manually rotate the reinforcing bars or couplers to perform the joining. Rotating the coupler 52 by hand requires a great deal of effort, and the work of joining a large number of reinforcing bars can sometimes injure the worker's wrists. Furthermore, it takes a lot of time to join reinforcing bars using a screw coupler type reinforcing joint, and most of that time is spent rotating the coupler.

Therefore, an object of the present invention is to provide a handy type coupler rotator that mechanizes the rotation operation of the coupler to reduce the labor of the worker and increases the rotation speed of the coupler to significantly shorten the time required for reinforcing bar joining work. That's true.

Means for Solving the Problems As a means for solving the problems of the prior art described above, a coupler rotation device for a screw coupler type reinforcing bar joint according to the present invention is provided, as an example is shown in the drawings. A drive belt (1) is arranged in a shape (2) that can be applied from the side direction to the coupler (52) of the joint and can contact the outer circumferential surface of the coupler (52) with an appropriate pressure, and is a drive means for causing the drive belt (1) to run at a predetermined speed. 6, and the casing 4 is provided with grips 8, 9 for holding in the hand.

Moreover, the second invention is a screw coupler type reinforcing bar joint in which the coupler 52 is laterally applied.
A plurality of drive rollers 10 are installed in such a manner that they can be brought into contact with the outer circumferential surface of the casing 11 with appropriate pressure. It is characterized by being provided with gripping parts 8 and 9.

Operation The coupler 52 is rotated at high speed in a predetermined direction by the running of the drive belt 1 which is in contact with the outer peripheral surface of the coupler 52 with appropriate pressure or by the rotation of the drive roller 10, and the reinforcing bar δ0,5 is rotated at high speed in a predetermined direction.
The glue bonding with 1 progresses.

Example The illustrated invention will now be described in detail.

The coupler rotator shown in Figures 1 and 2 is of the belt drive type, and as shown in Figure 3, the basic idea is to use a drive made of rubber or leather with a large friction coefficient. Target is 3
The kite pulleys 2a, 2b, and 2c are positioned at each vertex of an isosceles triangle and arranged in a roughly ■ shape, and the V-shaped part is applied from the lateral direction to the coupler 52 of the screw coupler type reinforcing bar joint. The structure allows stable contact with pressure. The endless drive belt 1 is also wound around the drive pulley 3. The three guide pulleys 2a, 2b, 2c,! l-l-drive pulley, V-shaped notch substantially similar to the V-shape of the drive belt 1 (Fig. 1)
It is installed in a cover casing 4 having a side surface.

Also installed within the cover casing 4 are a plurality of presser pulleys 5 .

A housing for a motor 6 is integrally attached to the other end of the cover casing 4, and a rotating shaft 6a of the motor 6 and a rotating shaft 3a of the drive pulley 3 are connected to a transmission mechanism 7 (FIG. 2).
The drive pulley 3 is driven by a motor 6. Cover casing 4 and motor 6
Grips 8 and 9 are provided on the outer surface of the coupler rotator for an operator to hold the coupler rotator in his or her hands. 6b in the diagram
is motor 6! ! It's a switch.

This coupler rotator has a length of about 40 cm in the left-right direction in FIG. 1, and a weight of about 1.5 kg.

To make the shell, hold and support the two grips 8 and 9 with both hands, apply the V-shaped part of the drive belt 1 to the coupler 52 from the side, contact it with moderate pressure, and then turn the power switch 6b.
Turn on the coupler 52, rotate the reinforcing bar 50.51
are screwed together using a coupler 52. Inevitably, reinforcing bar 5
The screws machined at the ends of 0 and 51 are reverse threads, and a reverse thread is also formed on the inner surface of the coupler 52.

According to this coupler rotator, the effective length of the screw is 130 mm.
It takes approximately 15 seconds to complete one reinforcing bar joint using an m-thick screw coupler type reinforcing bar joint.

Second Embodiment The coupler rotator shown in FIGS. 4 to 6 is a roller drive type, and as shown in FIG. 6, two rubber rollers (driving rollers) with a large friction coefficient are used. 10.10, the coupler 52 of the screw coupler type reinforcing bar joint is placed at a slight interval so that it can be applied from the lateral direction and brought into stable contact with an appropriate pressure. The two rubber rollers 10.10 are installed in a cover casing 11 having V-shaped sides to avoid interference with the coupler 52. A housing of a motor 6 is integrally attached to the other end of the cover casing 4, and a rotating shaft 6a of the motor 6 and a rotating shaft 10a of the rubber roller 10 are connected by a belt transmission mechanism 12 (FIG. 2). The two drive collages 10.10 are rotated by the motor 6 in a common direction at the same circumferential speed. On the outer surfaces of the cover casing 4 and the motor 6, a grip part 8 is provided for the operator to hold the second coupler rotator in his hand.
9 is provided. In the figure, 6b is a power switch for the motor 6.

The size of this coupler rotator is approximately 301 mm in length in the left-right direction in FIG. 4, and the weight is approximately 1.5 kg. The worker grasps and supports the two grips 8.9 with both hands, applies the two rubber rollers 10.10 to the coupler 52 from the lateral direction, brings them into contact with the coupler 52 with appropriate pressure, and then turns on the power switch 6.
Turn on b and rotate the coupler 52 to connect the reinforcing bar 50.5.
1 performs screw connection using a coupler 52.

The rubber rollers 10 can also be arranged 180° symmetrically with the coupler 52 in between, as shown in FIG. 7A. Alternatively, as shown in FIG. 7B, four rubber rollers 10 may be arranged symmetrically on the left and right sides of the coupler 52.

Effects of the present invention According to the screw coupler type reinforcing bar joint coupler rotator according to the present invention, the rotation operation of the cuffler 52 is mechanized, and the labor of the worker is greatly reduced, while the working time is greatly shortened. As a result, it is expected to reduce the amount of balls and the construction costs.

[Brief explanation of the drawing]

1 and 2 are a front view and a plan view showing a coupler rotator according to a first embodiment of the present invention, and FIG. 3 is a diagram showing the principle of the mechanism. 4 and 5 are a front view and a plan view showing the coupler rotator of the second embodiment, and FIG. 6 is a diagram showing the principle of the mechanism. Figure 7A
, Bc are different mechanism principles. 52...Coupler 1...Drive belt 6
...Motor 8, 9...Grip part 10...
・Drive roller

Claims (1)

[Scope of Claims] [1] A drive belt is arranged in a V-shape that can be applied from the lateral direction to the coupler of the screw coupler type reinforcing joint and can contact the outer peripheral surface of the coupler with moderate pressure, and the drive belt is held in a predetermined position. A coupler rotator for a screw coupler type reinforcing joint, characterized in that the casing is provided with a grip part for holding it in the hand, and the coupler rotator is equipped with a drive means for running at a speed of . [2] A plurality of drive rollers are placed so that they can contact the outer peripheral surface of the coupler with appropriate pressure from the side of the coupler of the screw coupler type reinforcing joint, and the drive rollers are moved in a common direction at the same circumferential speed. A coupler rotator for a screw coupler type reinforcing joint, characterized in that the casing is provided with a grip for holding it in the hand.