JPH06317007A - Rotary concrete chipping device having plural bits - Google Patents

Abstract

PURPOSE:To compact a device by installing a chisel rod equipped with a bit in a planetary gear rotating inside a fixed ring gear, and rotating and revolving each rod, and besides, sucking chips from the center shaft of a sun gear. CONSTITUTION:The chipping of concrete is performed by fixing a ring gear 10 and installing chisel rods 2 equipped with bits 1 in a plurality of planetary gears 11 rotating inside of it, and rotating and revolving each rod 2. The center shaft 13 of a sun gear is made hollow, and a suction device 6 is installed at the top so as to suck chips. Thereby, the constitution can be simplified, and the device can be compacted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary concrete chipping device having a plurality of bits for chipping a concrete surface, which has a simple structure and is compact, and can carry out chipping work extremely efficiently. The present invention relates to a rotary concrete chipping device having a plurality of bits capable of sucking crushed material.

[0002]

2. Description of the Related Art Conventionally, a concrete chipping device for chipping a concrete surface has an air hammer that attaches a bit to the tip of a small object to give a hitting force to the bite, or an arm of a heavy machine for a large object. There is provided a rotary drum-type concrete chipping device which is equipped at the tip of a rotary drum and which picks up concrete or the like with a rotary drum having a large number of bits arranged on its surface.

[0003]

However, in the above-mentioned conventional concrete chipping device, the air hammer requires human power, is inefficient, and is accompanied by occupational diseases and dangers due to vibration. Further, when the ceiling or the like is cut by using the air hammer, it is necessary for an operator to hold the air hammer by hand to perform the work, which causes a problem of heavy labor.

In the case of the rotary drum type, which will be described later, the equipment becomes large and the workability is poor in a narrow work space. In the case of hard concrete, if the rotary drum type is inevitable, the hard concrete slips because it is too hard. There was also a problem that good chiseling work could not be performed.

In either case, the crushed material remains at the work site, making it difficult to carry out the chipping work, and there is a problem in terms of noise.

In view of the above-mentioned problems and the like, therefore, the present invention simplifies the construction to achieve high torque and compactness,
Moreover, it is possible to perform chiseling work extremely efficiently,
It is an object of the invention to provide a rotary concrete chipping device having a plurality of bits capable of sucking a crushed material.

[0007]

In order to solve the above-mentioned problems, a transmission mechanism for transmitting a driving force from a drive shaft to a central shaft of a planetary gear device, and a respective chisel rod that rotates from the central 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 device, each chisel rod is formed to revolve around the central axis of the planetary gear device and driven from the drive shaft. The central axis of the planetary gear device that transmits the force has a cylindrical structure, and a suction device is connected to one end of the planetary gear device to form a pulverized product that can be sucked.

[0008]

As described above, since the planetary gear unit is adopted as the speed reducer, the plurality of bits are simultaneously rotated and the ring gears of the planetary gear unit are fixed. It becomes possible to orbit the surroundings, the structure can be simplified and the torque and size can be made compact, and the chipping work can be performed very efficiently and the crushed material can be sucked.

[0009]

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

FIG. 1 is a perspective view of an essential portion of the present invention, which is an embodiment of the present invention, FIG. 2 is a vertical sectional view, FIG. 3 is a plan view of a bit portion, and FIG. 4 is a sectional view of an essential portion of a planetary gear device. .

A rotary concrete chipping device having a plurality of bits according to this embodiment generally includes, for example, a hydraulic motor 9 which is a drive source, a substantially cylindrical body 12, and a planetary gear device incorporated therein. , A bit 1 connected to, for example, five chisel rods 2 protruding from the body 12.

The central shaft 13 has a cylindrical structure and is integrated with the center gear and the drive gear of the planetary gear unit, and is a front flange 4 in which one end of a substantially cylindrical body 12 is loosely fitted. A ball bearing 16 is mounted on the back head 3 which is axially pierced and penetrates in the direction of the central axis of the substantially cylindrical body 12, and the opposite end of the central shaft 13 seals the opposite end of the substantially cylindrical body 12. It is suspended.

The hydraulic motor 9 is erected on the outside of the back head 3 with a mounting bolt 17, and its motor shaft penetrates the back head 3 and is centered on the inside of the body 12 with a pinion gear 14 fixed to the motor shaft with a key 15. It meshes with the drive gear portion of the shaft 13.

The planetary gear device is provided through the center shaft 13 inside the body 12 and has a center gear portion which is integral with the center shaft 13 and is circumscribed and meshed with the center gear to form a five-divided angle. The five chuck gears 11 arranged and the chuck gears 11 fixed inside the body 12 in a substantially cylindrical shape.
The ring gear 10 is inscribed in and meshes with.

The chisel rod 2 is fixed on the central axis of each chuck gear 11, penetrates through the front flange 4 and projects from the body 12, and the bits 1 are attached to the tips thereof. The chisel rod 2 itself forms the front flange 4. The back flanges 8 connected by the studs 5 are axially mounted, respectively, and are rotatably arranged by the chuck gear 11.

The bit 1 has a large number of small conical projections for cutting concrete on the surface of a substantially columnar structure having a hemispherical tip. By driving a planetary gear device by a hydraulic motor 9, Each of the five bits 1 makes a rotational movement in the direction of the arrow in FIG. 1 and also makes an orbital movement about the central axis 13 so that the chipping work can proceed efficiently.

The crushed material chipped by the five bits 1 is connected to a dust flange 6 fixed on the back head 3 on the axis of the central shaft 13 by connecting a suction device to the chipped portion of the bit 1. The crushed material can be sucked from the central shaft 13 of the cylindrical structure extended to the above, and more efficient chiseling work becomes possible.

The rotary concrete chipping device having a plurality of bits can be mounted on a heavy machine by mounting a heavy machine bracket (not shown) on the main body bracket 18 for supporting the main body, thereby expanding the range of use. Become.

Needless to say, the present invention is not limited to the above-mentioned embodiment.

[0020]

Since the present invention is configured as described above, in a rotary concrete chipping device having a plurality of bits, a driving force is applied from the drive shaft of the drive device to the central axis of the sun gear of the planetary gear device. By transmitting a transmission mechanism, a rotation mechanism that is directly connected to the planet gears from the central shaft to rotate each chisel rod, a bit that is coupled to each chisel rod, and a ring gear of the planetary gear device by fixing them, respectively. The chisel rod of is formed so as to revolve around the central axis, and the central axis of the planetary gear device that transmits the driving force from the driving shaft has a cylindrical structure, and a suction device is connected to one end of the planetary gear device to collect the pulverized material. Since it is designed to suck, high torque can be obtained, and the structure is simple, so it can be made compact. It performed efficiently chipping operation Te, exhibits low noise, excellent effects in terms of low vibration.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of an embodiment of the present invention.

FIG. 3 is a plan view of a bit portion according to an embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a planetary gear device according to an 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 shaft 14 Pinion gear 15 Key 16 Ball bearing 17 Mounting bolt 18 Body bracket

Claims (2)

[Claims] 1. In a rotary concrete chipping device having a plurality of bits, a transmission mechanism for transmitting a driving force from a drive shaft of a drive device to a central axis of a sun gear of a planetary gear device, and a direct connection from the central shaft to a planet gear. Each chisel rod revolves around the central axis by fixing the rotation mechanism for rotating each chisel rod, the bit connected to each chisel rod, and the ring gear of the planetary gear device. A rotary concrete chipping device having a plurality of bits, which is characterized in that 2. The planetary gear device center shaft for transmitting a driving force from the drive shaft has a cylindrical structure, and a suction device is connected to one end of the planetary gear device center shaft so as to suck the pulverized material.
A rotary concrete chipping device having a plurality of described bits.