JP2729446B2 - Rotary concrete shearing device with multiple bits - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary concrete filing apparatus having a plurality of bits for fraying a concrete surface. The present invention relates to a rotary concrete shearing device having a plurality of bits capable of sucking pulverized material.

[0002]

2. Description of the Related Art Conventionally, a concrete shearing device for shaving a concrete surface is an air hammer for attaching a bit to the tip of a small object and applying a hitting force to the bit, or an arm of a heavy machine for a large object. There is provided a rotary drum type concrete shearing device which is mounted at the tip of a rotary drum and has a rotary drum having a large number of bits disposed on its surface to cut concrete or the like.

[0003]

However, in the above-mentioned conventional concrete scraping apparatus, in the case of the above-mentioned air hammer, human power is also required and efficiency is low, and occupational illness and danger due to vibration are also involved. In addition, when the ceiling or the like is hit by using the air hammer, it is necessary for an operator to carry out the work while holding the air hammer by hand, which also causes a problem of heavy labor.

[0004] In the case of the rotary drum type described below, the equipment is large and the workability is poor in a narrow work place. Further, in the case of hard concrete, if the rotary drum type is used, the concrete is too hard and slips, resulting in an increase in efficiency. There was also a problem that it was not possible to perform a good sharpening work.

[0005] In both cases, the pulverized material remains in the work area, making it difficult to perform a fraying operation, and also has a problem in terms of noise.

Accordingly, the present invention has been made in view of the above-mentioned problems and the like, and aims at high torque and compactness by simplifying the structure.
In addition, we made it possible to perform the razor work extremely efficiently,
The present invention has been made with an object to provide a rotary concrete shearing device having a plurality of bits capable of sucking pulverized material.

[0007]

In order to solve the above problems, a transmission mechanism for transmitting a driving force from a drive shaft to a center shaft of a planetary gear unit, and each chisel rod is rotated from the center shaft via a planetary gear. By fixing the rotating mechanism, the bit connected to each chisel rod, and the ring gear of the planetary gear unit, each chisel rod is formed to revolve around the center axis of the planetary gear unit and driven from the drive shaft. The center shaft of the planetary gear device for transmitting the force has a cylindrical structure, and a suction device is connected to one end thereof so that the crushed material can be sucked.

[0008]

As described above, by employing a planetary gear device for the speed reducer, a plurality of bits rotate at the same time, and the ring gear of the planetary gear device is fixed, so that each chisel rod is fixed to the center shaft of the planetary gear device. It is possible to make a revolving motion around the circumference, to simplify the configuration, to achieve a high torque and a compact size, and to perform the filing work very efficiently, and to suck the pulverized material.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an essential part of the present apparatus according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view, FIG. 3 is a plan view of a bit part, and FIG. .

The rotary concrete scraping device having a plurality of bits according to this embodiment generally includes, for example, a hydraulic motor 9 as a drive source, a substantially cylindrical body 12, and a planetary gear device built therein. , Which are connected to, for example, five chisel rods 2 protruding from the body 12.

The center shaft 13 has a cylindrical structure, is integrated with the center gear and the drive gear of the planetary gear unit, and is a front flange 4 into which one end of a substantially cylindrical body 12 is loosely fitted. The shaft is pierced and penetrated in the direction of the central axis of the substantially cylindrical body 12, and the opposite end of the central axis 13 is connected to the back head 3 sealing the opposite end of the substantially cylindrical body 12 by the ball bearing 16. Axle mounted.

The hydraulic motor 9 is erected on the outside of the back head 3 with mounting bolts 17, and its motor shaft passes through the back head 3 inside the body 12, and is centered on a pinion gear 14 fixed to the motor shaft by a key 15. The drive gear of the shaft 13 is engaged.

The planetary gear device is provided through a center shaft 13 inside the body 12, and is provided with a center gear portion formed integrally with the center shaft 13, and circumscribes and meshes with the center gear so as to form a five-divided angle. The five chuck gears 11 provided are fixed inside the substantially cylindrical shape of the body 12 and the chuck gears 11 are fixed.
The ring gear 10 is inscribed in mesh with the ring gear 10.

The chisel rod 2 is fixed on the center axis of each chuck gear 11, penetrates through the front flange 4 and protrudes from the body 12, and the bit 1 is attached to the tip thereof. The shafts are respectively supported by back flanges 8 connected by studs 5, and are arranged so as to be rotatable by chuck gears 11.

The bit 1 has a number of small conical projections projecting from the surface of a substantially cylindrical structure having a hemispherical tip for shaving concrete. The planetary gear unit is driven by a hydraulic motor 9. The five bits 1 revolve in the directions indicated by the arrows in FIG. 1 and revolve around the central axis 13 so that the filing operation proceeds efficiently.

The pulverized material that has been cut by the five bits 1 is connected to a dust flange 6 fixed on the axis of the central shaft 13 on the back head 3 by a suction device, so that the chipped portion of the bit 1 is removed. The pulverized material can be sucked from the central shaft 13 having a cylindrical structure extended to a further height, and more efficient filing operation can be performed.

The rotary concrete shearing device having a plurality of bits can be mounted on a heavy equipment by attaching a heavy equipment bracket (not shown) to a main body bracket 18 supporting the main body, so that the range of use can be expanded. Become.

It is needless to say that the present invention is not limited to the above-described embodiment.

[0020]

Since the present invention is constructed as described above, in a rotary concrete shearing device having a plurality of bits, the driving force is transferred from the driving shaft of the driving device to the center axis of the sun gear of the planetary gear device. By fixing a transmission mechanism for transmitting, a rotation mechanism that is directly connected to the planetary gear from the center axis to rotate each chisel rod, a bit connected to each chisel rod, and a ring gear of the planetary gear device, Is formed so as to revolve around the central axis, and the central axis of the planetary gear device for transmitting the driving force from the driving shaft has a cylindrical structure, and a suction device is connected to one end of the central axis to remove the crushed material. By being formed to suck, high torque can be obtained, and the structure is simple, so compactness is possible. It performed efficiently chipping operation Te, exhibits low noise, excellent effects in terms of low vibration.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view in one embodiment of the present invention.

FIG. 3 is a plan view of a bit part according to one embodiment of the present invention.

FIG. 4 is a sectional view of a main part of the planetary gear device according to the embodiment of the present invention.

[Explanation of symbols]

1 bit 2 chisel rod 3 back head 4 front flange 5 stud 6 dust flange 7 roller bearing 8 back flange 9 hydraulic motor 10 ring gear 11 chuck gear 12 body 13 center axis 14 pinion gear 15 key 16 ball bearing 17 mounting bolt 18 body bracket

Claims (2)

(57) [Claims] 1. A rotary concrete shearing device having a plurality of bits, a transmission mechanism for transmitting a driving force from a driving shaft of a driving device to a central axis of a sun gear of a planetary gear device, and a direct coupling from the central shaft to the planetary gear. By fixing the rotating mechanism for rotating each of the chisel rods, the bit connected to each of the chisel rods, and the ring gear of the planetary gear device, each chisel rod revolves around the central axis. A rotary concrete shearing device having a plurality of bits, wherein the device is formed. 2. A planetary gear device having a central shaft for transmitting a driving force from a drive shaft, having a cylindrical structure, and a suction device connected to one end of the central shaft for sucking the crushed material.
A rotary concrete shearing device having a plurality of bits as described in the above.