JPH0611318Y2 - Cleaner for concrete deposits - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a device for removing concrete deposits, and more specifically, it is attached to a shaft-like material such as a component of a temporary scaffold for construction work or a place used for it. The present invention relates to a dresser mechanism suitable for removing concrete.

[Conventional technology and problems]

For example, scaffolding boards and braces used at construction sites cause the adhesion of concrete, which requires a cleaning operation to remove it.

As a keren device that automatically performs the squeezing work, a large number of striking arms are swingably mounted around a rotating body, the striking arms are arranged radially by the centrifugal force due to rotation, and the striking arms are struck by the striking work. , A centrifugal impact type keren device for removing adhered concrete has been considered.

By the way, in the above-mentioned keren device, the striking arm becomes radial only when rotating at a high speed, and the striking can be surely applied to the work. Instead, the striking arm collides with the work piece in a hanging posture due to its own weight, which causes the striking arm to be stretched between the rotating body and the work piece and damage the work piece, depending on the type and material of the work piece. It is not possible to select a high rotation speed, especially a low speed rotation.

[Purpose of device]

The present invention has been made in order to solve the problems that have occurred in the centrifugal impact type keren device as described above, and provides a kelen device that can select an arbitrary number of revolutions, particularly a low speed revolution. Is the purpose.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention proposes that a plurality of shafts are provided around a rotary shaft that is rotatably supported at a position on a concentric circle centered on the rotary shaft. In a concrete deposit scavenger device that is arranged so as to rotate in parallel and integrally with each other, and a number of striking arms are swingably attached to each axis. A stopper is provided at a position on the front side in the rotation direction of the striking arm, which holds the striking arm in the radial direction of the rotation axis by abutting the front edge of the striking arm and allows the striking arm to rotate rearward in the rotation direction. It has a structure.

[Action]

When the rotating shaft is rotated, each striking arm becomes radial around the rotating shaft due to its centrifugal force, and the front edge in the rotating direction is supported by the stopper located in the front in the rotating direction to form a constant arrangement angle. When the concrete-attached work is moved and passed so as to face the direction of rotation within the rotation trajectory drawn by the tip of each of the impacting arms, each impact arm impacts the surface of the concrete-attached work by centrifugal force, and each impact arm moves forward in the rotation direction. Is supported by a stopper, the posture of the radial arrangement is maintained even at low speed rotation.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a horizontal drive shaft 2 is rotatably installed on the upper part of a conveyor 1 for feeding a temporary scaffolding constituent member and other concrete adhering members A (hereinafter referred to as work) in a longitudinal direction. The dresser mechanism 4 is rotatably attached to the tip of the arm 3 mounted in the free state, and the drive shaft 2 and the dresser mechanism 4 are interlocked with each other, and the motor (not shown) connects the dresser mechanism 4 to the dresser mechanism 4 via the drive shaft 2. It is designed to give rotation.

The arm 3 has a downward angle, that is, a dresser mechanism 4 for the work A by an adjusting rod provided between the arm 3 and the fixing member 5.
The contact amount can be freely adjusted, and the spring 7 is allowed to escape upward due to contraction.

A downward pressing arm 8 is attached to an intermediate portion of the drive shaft 2 in a free state, and a spring 9 urges a pressing elastic force of a pressing roller 10 at a lower end of the pressing roller 10 against the work A, and a dresser mechanism 4 operates to press the work A. Prevents vertical dance.

The dresser mechanism 4 fixes a plurality of plates 12 to a rotary shaft 11 whose both ends are supported by arms 3 so as to maintain a predetermined gap between the facing surfaces, and a plurality of plates 12 are provided around the rotary shaft 11 at positions between the plates 12. The book shafts 13 are arranged parallel to the rotary shaft 11 and at equal intervals on the same circumference centered on the shaft center of the rotary shaft 11.

In the case of FIG. 2, in the case of FIG. 2, five shafts 13 are arranged in a circle around the rotary shaft 11, a large number of striking arms 14 are attached to each shaft 13, and the shafts 13 are arranged between the plates 12 in the forward direction of rotation of each shaft 13. A stopper mounting shaft 15 is installed at a position so as to be parallel to the shaft 13, and a stopper 16 that supports the front edge of the striking arm 14 in the rotation direction is mounted on the mounting shaft 15.

The striking plate 14 is formed by using a strip-shaped plate,
One end of the shaft 13 is fitted onto the shaft 13 so that the rotary shaft 11 can swing about the shaft 13 in the rotation direction, and has a length protruding outward from the outer periphery of the plate 12, Many are installed along the axial direction of.

The stopper 16 supports the front edge in the rotation direction of the striking arm 14 that is radially arranged by centrifugal force during rotation, and keeps the posture constant. As shown in FIG. It is allowed to rotate rearward in the rotation direction while being in contact with.

As shown in FIG. 2, the condition for supporting the striking arm 14 by the stopper 16 is the center of the striking arm 14 in the longitudinal direction passing through the shaft 13 with respect to the radial state center line B passing from the center of the rotating shaft 11 to the center of the shaft 13. The support angle is set so that the line C is slightly inclined rearward in the rotational direction, and the occurrence of biting when the tip of the striking arm 14 contacts the work A is prevented.

The tip of the striking arm 14 may be subjected to processing such as quenching so as to improve wear resistance, and the mounting arrangement of the dresser mechanism 4 is not limited to the mounting on the arm tip as shown in the figure. Instead, it may be rotatably arranged at a fixed position on the conveyor 1.

The cleaning device of the present invention has the above-described structure, and the dresser mechanism 4 is provided for the work A conveyed by the conveyor 1.
1 is rotated at a speed of, for example, about 200 to 400 R / M as shown by an arrow in FIG.
As shown in FIG. 2, the tip of each striking arm 14 strikes the upper surface of the work A by centrifugal force, and the tip of each striking arm 14 is projected outwardly of FIG. 1 and is supported by the stopper 16.
Peel off the adhering concrete.

Since each striking arm 14 is rotatable rearward in the rotation direction, when the upper surface of the work A is curved, it follows this shape and also to the side surface of the work A. It comes into contact and the concrete can be removed from the top surface to the side surfaces.

〔effect〕

As described above, according to the present invention, a large number of striking arms are rotatably attached to the shaft arranged around the rotating shaft, and the front portion in the rotational direction of each striking arm is supported by the stopper. The striking angle at the tip of the striking arm can always be made constant, and even if low-speed rotation is selected, it is possible to prevent the occurrence of inconveniences such as the tip of the striking arm biting into the workpiece and damaging it. Can be realized.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of the keren device according to the present invention, and FIG.
The figure is an enlarged vertical front view of the dresser mechanism of the above, and FIG. 3 is a side view of the same. 4 ... Dresser mechanism, 11 ... Rotating shaft, 12 ... Plate, 13 ... Shaft, 14 ... Impact plate, 16 ... Stopper.

Claims (1)

[Scope of utility model registration request] 1. A plurality of shafts are arranged so as to rotate integrally with each other in parallel with the rotary shaft at a position on a coaxial circle centering on the rotary shaft which is rotatably supported. In a keren machine for concrete deposits, in which a large number of striking arms are swingably attached to each shaft, the striking arms of Keren of concrete deposits, characterized in that a stopper is arranged to hold the projecting attitude of the striking arm in the radial direction of the rotation axis by abutting the front edge and to allow the striking arm to rotate rearward in the rotation direction. apparatus.