JPH0619711Y2 - Screen base cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a device for cleaning a screw base used for a frame scaffolding for construction.

[Background Art] In a frame scaffold for construction, a screw base with a base plate fixed to one end of the screw is erected, the steel pipe of the frame scaffold is inserted into this screw, and an adjuster screwed to the screw is installed. It is designed to rotate to adjust the height of the scaffold.

After the work is completed, this screw base is used for the next use after removing foreign matters such as concrete adhered to the screw. Therefore, in general, a large lump of concrete adhering to the screen is hammered off with a hammer, or fine concrete or the like adhering to the screen is manually scraped off by an operator using a wire brush. Therefore, it is necessary to work long hours in a bad environment in which dust and dirt are floating.

For this reason, a device for automatically cleaning the screw base has been conventionally proposed (Jitsuko 62-43-078).
In this cleaning device, an adjuster screwed on the outside of the screw is forcibly screwed on the screw to remove foreign matter attached to the screw. This allows foreign matter to be removed in a short time, but the screwing part between the adjuster and the screw has a large gap, so if fine concrete powder adheres, the operator must manually re-install the wire. The concrete on the outside of the screen must be scraped off with a brush.

The present invention has been made in view of the above circumstances, and an object thereof is to obtain a screw base cleaning device capable of automatically and reliably cleaning a large number of screw bases.

SUMMARY OF THE INVENTION The present invention is a device for cleaning a screw base in which an adjuster handle is screwed to a screw, and is capable of rotating a plurality of screws around an axis and adjusting the adjuster handle. A frame that restrains and supports rotation, a wire brush that rotates to scrape off foreign matter adhering to the screw on the frame, and a frame that moves the frame and the wire brush relative to each other to make the wire brush correspond to a plurality of screens. It is characterized by having a moving drive means and a rotary drive means for rotating the screw on the frame to move the adjuster handle in the axial direction of the screw base.

Therefore, in the present invention, an operator mounts a plurality of screw bases on a frame, relatively moves the frame and the wire brush, and the wire brush sequentially removes foreign matters such as concrete adhered to the plurality of screw bases. Can be scraped off. Since the rotation driving means rotates the screw, the wire brush can scrape off the concrete adhesion over the entire circumference of the screw, and the adjuster handle rotates relative to the screw and moves in the axial direction, so that it is covered by the adjuster handle. The hidden screen part can be cleaned surely.

[Embodiment of the Invention] As shown in FIGS. 1 to 3, in the first embodiment of the present invention, a plurality of screw bases 12 are mounted on the frame 14 in a parallel state. Frame 1
The wheel 16 supported by a shaft 4 is guided by a rail 18 and can be moved in the direction of arrow A by the driving force of a driving device (not shown).

The screw base 12 has a rectangular base plate 24 at one axial end of a screw 22 having a male screw formed on the outer circumference of a steel pipe.
Is stuck. Further, an adjuster handle 26 having a female screw formed on the inner circumference is screwed into the screw 22, and can be moved in the axial direction (arrow B direction) of the screw 22 by rotating.

Support brackets 28 and 32 are erected on the frame 14 so as to sandwich one end of the screw 22 in the axial direction. One end of an arm 34 is pivotally supported on the upper end portion of the support bracket 28. The arm 34 has a substantially semicircular shape, and when the tip end thereof abuts on the support bracket 32, one end of the screw 22 in the axial direction is held. Then, the screen 22 is prevented from being accidentally separated from the frame 14.

Also, support bracket 2 is attached to the other end of screen 22 in the axial direction.
8 and 32 are attached and have the same function.

A pin 36 projects near the tip of the arm 34,
When the frame 14 is fed in the direction of arrow A with the tip of the arm 34 separated from the support bracket 32, the cam plate 3
8 and the pin 36 come into contact with each other so that the arm 34 moves to the screw 22.
It is designed to be automatically rotated in the closing direction of.

A pair of guide bars 42 are provided on the plurality of screw bases 12 in parallel with the axis of the screws 22, respectively.
It is fixed so as to correspond to both sides of the screen 22.
The guide bar 42 corresponds to the handle portion 26A protruding in the opposite direction of the adjuster handle 26, and makes the adjuster handle 26 non-rotatable around the axis of the screw 22. Therefore, when the screw 22 is rotated, the adjuster handle 26 is moved relative to the screw 22 to move in the axial direction of the screw 22.

A wire brush 44 is provided above the frame 14 sent in the direction of the arrow A so as to scrape off concrete or the like adhering to the outer periphery of the screw 22 by being strongly pressed to the outer periphery of each screw 22. This wire brush 4
A plurality of wires 4 project radially toward the outer periphery of the shaft 46, and both ends of the shaft 46 in the axial direction are axially supported by the bearing 52 of the dustproof case 48 as shown in FIG. Further, the driving force of a motor 54 attached to the dustproof case 48 is transmitted to the shaft 46 via a chain 56 so that the shaft 46 is forcibly rotated.

The dust-proof case 48 surrounds the frame 14 and the wire brush 44, and covers the concrete and the wire brush fragments which are separated from the screw 22 and scattered by the rotation of the wire brush 44 during cleaning so as not to be scattered to the outside.

A pair of sandwiching wheels 6 are provided on the lower side portions of the wire brush 44.
2 and 64 are arranged with their axes being vertical.
As shown in FIG. 3, the sandwiching wheel 62 is axially supported by a support shaft 68 via a bearing 66, and the support shaft 68 is fixed to a bracket 72. The bracket 72 is fixed to the motor 74, and the output shaft 7 of the motor 74 is
4A is fixed to the sandwiching wheel 64. It is preferable that an elastic body such as rubber is provided on the outer periphery of the sandwiching wheel 64. The rotation of the motor 74 causes the sandwiching wheel 62 to clamp and rotate the portion deviated from the axial center of the base plate 24, thereby rotating the screw 22. It is designed to generate a rotational force around it.

Next, the operation of this embodiment will be described.

In the state shown in FIG. 1, the arm 34 is opened, and the screen 22 of the screen base 12 is supported by the support bracket 2.
Insert between 8 and 32 respectively. When the frame 14 is moved in the direction of arrow A in this state, the cam plate 38 contacts the pin 36 and the arm 34 is automatically closed before the screw bases 12 correspond to the wire brushes 44.

When the screw base 12 enters below the wire brush 44, the wire brush 44 driven by the rotation of the motor 54 is pressed against the outer periphery of the screw 22 to remove concrete and the like adhering to the outer periphery of the screw 22. Here, the motor 74 is connected to the screen 22 via the base plate 24.
Since the screw 22 is rotated, the entire circumference of the screw 22 corresponds to the wire brush 44. At the same time, the rotating screw 22 moves the adjuster handle 26 along the axial direction (the direction of arrow B), so that the outer peripheral portion of the screw 22 hidden by the adjuster handle 26 can be surely wire brushed. It can be cleaned at 44. Dust and the like generated by scraping off the concrete is sealed in the dust-proof case 48, so that it does not adversely affect external workers.

In this way, the plurality of screw bases 12 are cleaned by the movement of the frame 14 in a short time. Although the screw base 12 is moved along the rail 18 in order to move the frame 14 relative to the wire brush 44 in the above embodiment, the wire brush 44 can be moved in the direction of arrow A or in the opposite direction. Good. Further, in order to rotate the screw 22, the sandwiching wheels 62, 64
However, the present invention is not limited to the configuration in which the screw 22 is rotated via the base plate 24, and other rotation driving means such as directly transmitting a rotational force to the tip of the screw 22 can be applied. In addition, the screen base 12 is a support bracket 2
The arm 34 may be omitted if there is no risk of separation from between 8 and 32, and another screw base support structure may be applied.

Next, a second embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 4 to 6, in the second embodiment of the present invention, a plurality of screw bases 12 are mounted on a disc-shaped frame 114 in a radial state along the radius of the frame 114. The shaft 116 is fixed to the center of the frame 114. The shaft 116 is connected to the motor 120 via a belt 118, and the driving force of the motor 120 causes the shaft 120 to rotate counterclockwise (direction of arrow C) in FIG.
It can be turned to.

The screw base 12 has the same structure as that of the first embodiment, and can be moved in the axial direction of the screw 22 (direction of arrow B) by rotating the adjuster handle 26.

A semicircular support bracket 128 is erected on the frame 114 so as to lock one end of the screw 22 in the axial direction. A notch 134 is formed in the support bracket 128 from the front side in the rotational direction of the frame 114, and holds one end of the screw 22 in the axial direction to prevent the screw 22 from being accidentally detached from the frame 114.

A support bracket 128 is also attached to the other end of the screw 22 in the axial direction, and has a similar function.

A guide bar 142 is fixed to the rear side in the rotation direction of the plurality of screw bases 12 in parallel with the axis of the screws 22 on the frame 114 corresponding to one side of the screws 22. The guide bar 142 corresponds to one of the handle portions 26A protruding in the opposite direction of the adjuster handle 26, and makes the adjuster handle 26 non-rotatable around the axis of the screw 22. Therefore, when the screw 22 is rotated, the adjuster handle 26 moves relative to the screw 22 and moves in the axial direction of the screw 22.

A wire brush 144 is provided above the frame 114 sent in the direction of arrow C, and scrapes off concrete or the like adhering to the outer circumference of each screw 22 by being strongly pressed to the outer circumference of each screw 22. In this wire brush 144, a plurality of wires are radially projected to the outer periphery of a shaft 146 arranged in the radial direction of the wire brush 144, and the shaft 146 has both axial end portions as shown in FIG. It is axially supported by the bearing 152 of the dustproof case 148. Further, the driving force of a motor 154 attached to the dustproof case 148 is transmitted to the shaft 146 via the chain 156 so that the shaft 146 is forcibly rotated.

The dustproof case 148 includes the frame 114 and the wire brush 1.
The wire 44 surrounds the wire 44 and covers the wire brush 144 so that concrete or the like, which is separated from the screw 22 and scattered by the rotation of the wire brush 144 during cleaning, does not scatter to the outside. Further, a door 148 is openably and closably provided at a portion above the right half surface of FIG. 6 of the frame 114 of the dustproof case 148.
A is provided, and the screw base 12 can be attached to and detached from the frame 114 by opening the door 148A.

A pair of sandwiching wheels 1 are provided on the lower side portions of the wire brush 144.
62 and 164 are arranged with their axes being vertical. As shown in FIG. 6, the sandwiching foil 162 is the bearing 16
6 is pivotally supported by a support shaft 168.
8 is fixed to the bracket 172. The bracket 172 is fixed to the outer cylinder of the motor 174,
The output shaft 174A of the motor 174 is connected to the holding wheel 164.
Is stuck to. The sandwiching wheel 164 is preferably provided with an elastic body such as rubber on the outer circumference thereof.
The rotation of 74 causes the base plate 2 together with the sandwiching foil 162.
The portion of the shaft 22 which is deviated from the axial center is clamped and rotated, thereby generating a rotational force around the shaft in the screw 22.

Next, the operation of this embodiment will be described.

The door 148A of the case 148 is opened, and the screws 22 of the screw base 12 are inserted into the notches 132 of the support bracket 128, respectively. When the frame 114 is rotated in the direction of arrow C by the rotation of the motor 120 in this state, the screw base 12 enters below the wire brush 144. Further, the wire brush 144 driven by the rotation of the motor 154 is pressed against the outer periphery of the screw 22 to remove concrete and the like attached to the outer periphery of the screw 22.

Here, since the motor 174 rotates the screw 22 via the base plate 24, the entire periphery of the screw 22 corresponds to the wire brush 144. At the same time, the rotating screw 22 moves the adjuster handle 26 along the axial direction (the direction of arrow B), so that the outer peripheral portion of the screw 22 hidden by the adjuster handle 26 can be surely wire brushed. It can be cleaned at 144. Dust and the like generated by scraping off the concrete is sealed in the dust-proof case 148, so that it does not adversely affect the external worker.

Further, in this embodiment, the door 148A is opened,
Since the screw base 12 can be attached to and detached from the frame 114, a large number of screw bases 12 are continuously cleaned by the rotation of the frame 114.

[Effects of the Invention] Since the present invention has the above-described configuration, it has an excellent effect of being able to reliably clean a large number of screw bases in a short time.

[Brief description of drawings]

FIG. 1 is a perspective view showing a screw base cleaning device of a first embodiment to which the present invention is applied, FIG. 2 is a partial cross-sectional side view of the first embodiment, and FIG. 3 is III- of FIG. III sectional view, 4th
FIG. 5 is a perspective view showing a screw base cleaning device according to a second embodiment of the present invention, and FIG. 5 is a plan view of the second embodiment.
FIG. 6 is a sectional view taken along line VI-VI in FIG. 12 ... Screw base, 14, 114 ... Frame, 22 ... Screw, 24 ... Base plate, 26 ... Adjuster handle, 44, 114 ... Wire brush, 62, 64, 162, 164 ... Clamping wheel, 74, 174 ... Motor .

Claims (1)

[Scope of utility model registration request] 1. A device for cleaning a screw base, in which an adjuster handle is screwed to a screw, wherein a plurality of screws can be rotated about an axis and supported by restraining rotation of the adjuster handle. A frame, a wire brush that rotates to scrape off foreign matter adhering to the screw on the frame, and a relative movement drive unit that relatively moves the frame and the wire brush to correspond the wire brush to a plurality of screws. A rotation base cleaning device for rotating a screw on the frame to move an adjuster handle in an axial direction of the screw base.