KR102666840B1 - rock crushing apparatus using rotary hammer and rock crushing method using the same - Google Patents

Abstract

The present invention discloses a rock crushing device using a rotary hammer and a rock crushing method using the same. The arm crushing device includes a housing body having a coupling bracket, a rotating supporter rotatably installed on the housing body, a rotary hammer rotatably installed on the rotating supporter and a plurality of bits or arm crushing teeth installed on the outer peripheral surface, and It includes a rotary drive unit installed on the housing body and the rotary hammer to rotate the rotary hammer, and a hydraulic striking unit installed on the rotary supporter to apply a striking force in the rotation direction of the rotary hammer.

Description

Rock crushing apparatus using rotary hammer and rock crushing method using the same}

The present invention relates to a rock crushing device, and more specifically, to a rock crushing device using a rotary hammer that can improve the crushing force and excavation efficiency of the arm by vibrating the rotating rotary hammer in the direction of rotation, and a rock crushing method using the same. It's about.

Among the attachments that are generally used on the arms or booms of heavy construction equipment, they are used to process one side of a building under construction at a construction site, and include a pair of drums equipped with bits. There is a milling head, a faceting machine with multiple cutters installed on the outer peripheral surface of a drum installed on the outer peripheral surface of a hydraulic motor, and a grinding machine with multiple cutters installed on a plate-shaped member rotated by a hydraulic motor.

These milling heads and face mills have a structure that allows work by installing protruding bits on the outer peripheral surface of the drum, but there is a problem in that they cannot improve work efficiency because they cannot provide impact force due to rotation and separate vibration to the cutter.

Republic of Korea Patent No. 10-2146614 discloses a cotton shaver. The published faceting machine includes a support block that is in contact with and coupled to the disc block of the arm connection, a cutting body having a side wall block connected to the support block, and a hydraulic motor installed in the side wall block of the cutting body, and the hydraulic motor It is rotated by and has a hydraulic drum cutter provided on the outer peripheral surface with protrusion cutters for face cutting.

Republic of Korea Patent No. 10-0780157 discloses an excavator combined with a side faceting machine, and Korea Registered Utility Model No. 20-0185290 discloses the holder arrangement structure of a cutter wheel for an excavator.

And Korean Patent Publication No. 10-2017-0130354 discloses a hydraulic device for excavators and general construction equipment, and U.S. Patent 6,626,500 discloses the configuration of a cutter including a shell on which two rotating drums are supported. there is.

As described above, the conventional cutter wheel and face mill have a structure that allows work by applying rotational force and pressure to the drum, but there is a problem in that workability cannot be improved because impact force and rotational force cannot be provided to the cutter installed on the drum.

In particular, the breaker used on an excavator to crush the arm uses a piston to strike the chisel in a vertical direction to crush the arm, so it generates a lot of noise, resulting in civil complaints due to vibration and noise. There is a problem in that the excavating force cannot be increased.

Republic of Korea Patent No. 10-2146614 Republic of Korea Patent No. 10-0780157 Republic of Korea registered utility model No. 20-0185290 Republic of Korea Patent Publication No. 10-2017-0130354

The present invention is intended to solve the problems described above, and involves crushing rocks using a rotary hammer that can improve crushing force and excavation and excavation force by rotating the rotary hammer for crushing the arm and applying impact force in the rotation direction. To provide a device and a rock crushing method using the same.

Another object of the present invention is to provide an arm crushing device using a rotary hammer that can apply an impact force in the rotation direction of the rotary hammer and absorb a reaction force acting in the reverse direction using an elastic member, and a rock crushing method using the same.

The rotary hammer arm crushing device of the present invention for achieving the purpose includes a housing body having a coupling bracket, a rotation supporter rotatably installed on the housing body, and a rotation supporter rotatably installed coaxially with the rotation support body and on the outer peripheral surface. A rotary hammer on which a plurality of bits or arm crushing teeth are installed and whose rotation is restricted by being elastically supported by elastic members on the rotary supporter;

A rotation drive unit installed on the housing body and the rotation supporter to rotate the rotation supporter,

It is characterized by having a hydraulic striking unit installed on the rotation supporter and applying a striking force in the rotation direction of the rotary hammer.

The rotary hammer arm crushing device of the present invention for achieving the above object includes a housing body having a coupling bracket, a rotation support rotatably installed on the housing body, and a plurality of rotatable support units rotatably installed on the rotation support body. A rotary hammer equipped with bits or arm crushing teeth,

A rotary drive unit installed on the housing body and the rotary hammer to rotate the rotary hammer,

It is characterized by having a hydraulic striking unit installed on the rotation supporter and applying a striking force in the rotation direction of the rotary hammer.

In the present invention, an elastic member that transmits the rotational force of the rotary drive unit to the rotary hammer and expands and contracts in the rotational direction or reverse direction of the rotary hammer so that the striking force can be transmitted to the bit without being attenuated by the hydraulic striking hammer. It is further provided with an elastic support unit having elements.

And the hydraulic striking unit includes a striking unit installed at predetermined intervals along the circumferential direction within the rotary hammer, and at least one unit installed on the rotary hammer so that a striking force is applied to the striking unit in the rotation direction of the rotary hammer. Equipped with a striking hammer.

The rock crushing method using the rock crushing device of the present invention to achieve the above object includes a rotating support rotatably installed by the axial portion of the housing body installed on the excavator, and a plurality of rotatable supports rotatably installed on the rotating support. A rotary hammer rotation step of rotating a rotary hammer equipped with bits or arm crushing teeth using a rotary drive unit,

A striking step is provided to apply an impact force in the direction of rotation of the rotary hammer using a striking hammer installed on the rotating support.

In the present invention, at least one elastic member is installed on the housing body and the rotary hammer to transmit the rotational force of the rotary drive unit to the rotary hammer, and at the same time, the striking force can be transmitted to the bit without being attenuated by the hydraulic striking hammer. It further includes an elastic vibration step of expanding and contracting in the rotational direction or reverse direction of the rotary hammer.

The arm crushing device using a rotary hammer and the arm crushing method using the same according to the present invention can increase the crushing efficiency of the arm by increasing the crushing force of the arm by the bit by applying striking force to the rotary hammer in the rotation direction.

In addition, by applying a striking force to the rotating rotary hammer in the direction of rotation, the reaction force acting on the bit after crushing the arm acts as the stretching force of the elastic support, and this stretching force can act as an exciting force when the arm is broken by the bit, thereby damaging the arm. The crushing power can be increased.

1 is a perspective view of an arm crushing device using a rotary hammer according to the present invention;
Figure 2 is a cross-sectional view of the arm crushing device using a rotary hammer according to the present invention;
Figure 3 is a cross-sectional view showing the operating state of the arm crushing device using the rotary hammer shown in Figure 2;
Figure 4 is a cross-sectional view showing another embodiment of the arm crushing device using a rotary hammer according to the present invention;
Figure 5 is a cross-sectional view showing another embodiment of the arm crushing device using a rotary hammer according to the present invention;
Figures 6 and 7 are side views showing the operating state of the arm crushing device using a rotary hammer according to the present invention;
Figure 8 is a block diagram of a rock crushing method using a rock crushing device according to the present invention;

According to the present invention, a rock crushing device using a rotary hammer is capable of excavating a tunnel, crushing and excavating a rock, or excavating a face, and examples thereof are shown in Figures 1 to 3.

Referring to the drawings, the rock crushing device 10 using a rotary hammer according to the present invention is mounted on a construction machine, that is, an excavator, and can perform tasks such as excavating the rock, crushing the rock, and faceting civil buildings. A housing body 20 is provided with a coupling bracket 15 that is mounted on a boom of a construction machine such as an excavator, and a bearing portion is supported on the housing body 20, so that a rotation support body 25 is rotatably installed.

In addition, a drum-type rotary hammer 30 is installed on the rotating support 25 and surrounds the rotating support 25 and has bits or arm crushing teeth 35 installed on the outer peripheral surface. A rotation drive unit 60 for rotating the rotary hammer 30 is installed on the housing body 20 and the rotary hammer 30.

A hydraulic striking unit 50 is installed on the rotary support 25 to vibrate the rotary hammer 30 by striking it in the rotational direction of the rotary hammer 30 so as to apply an exciting force to the bit of the rotary hammer 30.

The arm crushing device using a rotary hammer according to the present invention configured as described above will be described in more detail for each component as follows.

The housing body 20 of the arm crushing device 10 using the rotary hammer is provided with a coupling bracket 15 equipped with a coupling pin 16 on its upper side.

A rotation support 25 is rotatably installed on the housing body 20, and the rotation support 25 includes a drum-shaped rotary hammer 30 with a bit or arm crushing tooth 35 installed on the outer peripheral surface as described above. is installed.

As shown in Figures 1 and 2 and 3, the first support shaft 26a on one side of the rotation support body 25 is supported by a bearing on the housing body 20, and the second support on the other side of the rotation support body 25 The shaft 26b is supported on the rotary hammer 20. To explain this in more detail, one side of the rotary hammer 30 is supported by the first support shaft 26a coaxially with the rotation support 25, and the other side of the rotary hammer 30 is supported by the rotation support. It is supported on the second rotation axis 26b, which is the free end side of (25). Accordingly, the drum-shaped rotary hammer 30 surrounds one side of the rotary support body 35.

The combination of the rotation support body 25 and the rotary hammer 30 is not limited to the above-described embodiment, and the first and second support axes 26a and 26b of the rotation support body 25 are connected to the housing body 20. It may be rotatably supported by a bearing, and a rotating hammer 30 may be installed coaxially on the rotating support 25 supported by the first and second supporting shafts 26a and 26b. Additionally, the rotary hammer 30 may be rotatably supported with respect to the rotary supporter 25.

The hydraulic striking unit 50 includes a plurality of striking units 51 installed on the inner peripheral surface of the rotary hammer 30 at an angle to the radial axis so that a striking force can be applied in the rotational direction of the rotary hammer 30 at predetermined intervals. and striking hammers 55 that are installed on the rotation supporter 25 and strike each striking portion 51. The striking hammer 55 is equipped with a piston that moves forward and backward by hydraulic pressure in the main body, such as a hydraulic breaker or hydraulic drifter, and a chisel that is struck by the piston and transmits this striking force to the striking portion 51. It has a composition.

The striking hammer 55 is not limited to the above-described embodiment, and has a structure capable of applying an impact force in the rotational direction to the rotary hammer 30 by striking the striking portion 51 in the rotational direction of the rotary hammer 30. It is possible. For example, an electric hammer may be used.

Although not shown in the drawing, it is desirable to create a vacuum atmosphere inside the rotating support body 25 and the rotating hammer 30 where the striking hammer 55 is installed in order to reduce noise caused by the operation of the striking hammer. For this purpose, a vacuum generating unit may be further provided to vacuum the interior of the rotary hammer and the rotary support.

The rotary drive unit 60 is capable of rotating the rotary hammer 30 supported on the housing body 20 with respect to the housing main body 20, and the rotation center of the rotary hammer is located on one side of the rotary hammer 30. A ring gear 61 is installed coaxially, and the ring gear 61 meshes with a pinion gear 63 installed on the rotation axis of the drive motor 62 installed in the housing body 20. The ring gear 61 installed on the rotary hammer 30 is supported on a bearing fixed to a bearing support unit installed on the housing body 20. As another embodiment of the rotation drive unit 60, it may be composed of a hydraulic drive motor installed in the housing body 20 to rotate the rotation support body 25.

On the other hand, as shown in Figures 4 and 5, the arm crushing device using a rotary hammer according to the present invention protects the rotary support 25 and the rotary hammer 30 from blows generated by the hydraulic striking unit 50. An elastic support unit having elastic members (71) and (72) that activate vibration by expanding and contracting in the rotational direction or reverse direction of the rotary hammer (30) so that the vibration caused by the rotary hammer (30) is not attenuated and can act as an exciting force on the bit (35). (70) may be further provided.

The elastic support unit 70 elastically supports the rotary hammer 30 with respect to the rotation support 25 when the striking portion 51 is struck in the rotation direction of the rotary hammer 30 by the striking hammer 55. As shown in FIG. 4, elastic members 71 and 72 are installed on the inner surface of the rotary hammer 30 and the corresponding rotary support body 25. The elastic members 71 and 72 are arranged in the circumferential direction around the first support axis 26a.

The elastic members 71 and 72 may be made of rubber or synthetic rubber, but are not limited to this and may also be made of springs.

Figure 6 shows another embodiment of the arm crushing device according to the present invention. In this embodiment, the same reference numerals as in the above embodiment indicate the same components.

Referring to the drawing, the arm crushing device is rotatably installed in the housing body 20 with both ends of a rotation supporter 25 supported by bearings, and the rotation supporter 25 has a plurality of units on the outer peripheral surface coaxially with its rotation center axis. A rotary hammer (30) equipped with two bits or arm crushing teeth (35) is rotatably installed. And between both sides of the rotary supporter 25 and the inner surfaces of the corresponding rotary hammer 30, there is an elastic member of the elastic support unit 70 that regulates the rotation of the rotary hammer 30 with respect to the rotary supporter 25 ( 71)(72) are installed.

In addition, a rotation drive unit 80 for rotating the rotation supporter 25 is installed in the housing body 20. The rotation drive unit 80 is connected to the rotation support 25 and includes a reducer for driving the reducer and a hydraulic drive motor 81 for driving the reducer.

And a hydraulic striking unit 50 is installed inside the rotating support 25 to apply a striking force to the rotating hammer 30 in the rotational direction. The hydraulic striking unit 50 has the same structure as the above-described embodiment.

The arm crushing method using the arm crushing device according to the present invention is rotatably installed on the housing body 20 and uses a rotary hammer 30 equipped with a plurality of arm crushing teeth 35 on the outer peripheral surface of the rotary drive unit 60. It is provided with a rotary hammer rotation stage (100) that rotates using a rotary hammer. And striking in the direction of rotation of the rotary hammer (30) using a hydraulic striking unit (50) that can apply an exciting force to the bit or arm crushing tooth (35) of the rotary hammer (30) installed on the rotary body (30). It is provided with a hitting step (110).

The arm crushing method using the arm crushing device according to the present invention is installed on the housing body 20 and the rotary hammer 30 to transmit the rotational force of the rotary drive unit 60 to the rotary hammer 30 and to blow the blow. Elasticity installed between the rotary support 25 and the rotary hammer in the rotational direction or reverse direction of the rotary hammer 30 so that the striking force can be transmitted to the bit or arm crushing tooth 35 without being attenuated by the hammer 55. An elastic vibration step 120 for stretching and contracting the member 71 may be further provided.

The operation of the rock crushing device using a rotary hammer according to the present invention configured as described above and the rock breaking method using the rock crushing device will be described in more detail as follows.

In order to excavate or crush a rock using the arm crushing device 10, the coupling bracket 11 installed on the housing body 20 is coupled to the boom of a construction machine, for example, the boom of an excavator. In this process, the rotary hammer 30 is rotated using the rotation drive unit 60, and a striking force is generated in the rotation direction of the rotary hammer 30 using the striking hammer 55 of the hydraulic striking unit 50. make it possible

Rotation of the rotary hammer 30 is first performed by the rotary drive unit 60 of the rotary hammer 30, as shown in FIGS. 2 to 4, which drives the drive motor 62 of the rotary hammer 30. This causes the ring gear 61 installed on the side of the rotary hammer 30 to rotate, causing the rotary hammer 30 to rotate with respect to the housing body 20.

And vibration is generated by the hydraulic striking unit 50 when the striking hammer 55 strikes the striking portion 51.

Therefore, the striking force applied to the striking unit 51 by the striking hammer 55 in the direction of rotation of the rotary hammer 30 acts on the bit or arm crushing tooth 35 installed on the rotary hammer 30, thereby reducing the crushing force of the arm. Alternatively, the digging force can be increased. In particular, when excavating a tunnel, striking force can be applied by the striking hammer (55) in the direction of rotation of the rotary hammer (30), so the arm crushing teeth (35) installed on the outer peripheral surface of the rotary hammer (30) are concentrated on the crushing area of the arm. By applying striking force, the crushing power of the arm can be increased.

And, as shown in FIGS. 4 to 7, when the elastic support unit 70 is installed on the rotation supporter 25 and the rotary hammer 30, the elastic member 71 is extended in the rotation direction. And when a reaction force is applied when crushing the arm due to the exciting force acting on the bit or arm crushing tooth 35 installed on the rotary hammer 30, the elastic members 71 are stretched in the reverse direction of rotation and the restoring force By exciting the rotary hammer 30 in the direction of rotation, the crushing force of the arm can be increased.

Accordingly, during excavation or arm crushing work by the rotary hammer 30 of the rotary ripper according to the present invention, the exciting force generated by the hydraulic striking unit acts in the rotation direction of the rotary hammer 30 or in the reverse direction of the rotary hammer. Since an exciting force is applied in the direction of rotation by the reaction force of the elastic member, the striking force can be increased at the area excavated by the bit or arm crushing tooth installed on the outer peripheral surface of the rotary hammer (30).

Through this action, the rotary ripper can maximize work efficiency in tunnel excavation, arm crushing, and face cutting.

As described above, the arm crushing device using a rotary hammer and the rock crushing method using the same (10) crush and excavate the arm by applying impact force to the rotating rotary hammer in the rotation direction during the excavation work and arm crushing work. power can be increased.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached registered claims.

Claims (6)

A housing body 20 having a coupling bracket 15, a rotation support body 25 rotatably installed on the housing body 20, and a plurality of bits or arm crushing elements installed on the rotation support body 25 and on the outer peripheral surface. A rotary hammer (30) with teeth (35) installed,
A rotation drive unit 60 installed on the housing body 20 to rotate the rotation support 25 or the rotary hammer 30,
It is provided with a hydraulic striking unit (50) installed on the rotation support (25) and applies a striking force in the rotation direction of the rotary hammer (30),
The hydraulic striking unit 50 includes a striking unit 51 installed at predetermined intervals along the circumferential direction within the rotary hammer 30, and a rotary hammer installed on the rotary hammer 30 to the striking unit 51. An arm crushing device using a rotary hammer, characterized in that it has at least one striking hammer (55) installed so that a striking force can be applied in the rotation direction of (30). According to clause 1,
The rotational direction of the rotary hammer 30 is such that the rotational force of the rotary drive unit 60 is transmitted to the rotary hammer 30 and the striking force is transmitted to the bit without being attenuated by the hydraulic striking unit 50. Or, an arm crushing device using a rotary hammer, characterized in that it is further provided with an elastic support unit (70) having elastic members (71) and (72) that expand and contract in the reverse direction. delete delete A housing body 20 having a coupling bracket 15, a rotation support body 25 rotatably installed on the housing body 20, and a plurality of bits or arm crushing elements installed on the rotation support body 25 and on the outer peripheral surface. A rotary hammer (30) with teeth (35) installed,
A rotation drive unit 60 installed on the housing body 20 to rotate the rotation support 25 or the rotary hammer 30,
It is provided with a hydraulic striking unit (50) installed on the rotation support (25) and applies a striking force in the rotation direction of the rotary hammer (30),
The hydraulic striking unit 50 includes a striking unit 51 installed at predetermined intervals along the circumferential direction within the rotary hammer 30, and a rotary hammer installed on the rotary hammer 30 to the striking unit 51. The arm is crushed using an arm crushing device equipped with at least one striking hammer (55) installed so that a striking force can be applied in the rotation direction of the arm (30), and the arm crushing teeth (35) are installed on the rotary hammer (30). ) a rotary hammer rotation step (100) for rotating the rotary hammer (60) using a rotary drive unit (60);
A rock crushing method using an arm crushing device, characterized in that it includes a striking step (110) of applying an impact force in the rotational direction of the rotary hammer (30) using a striking hammer (55) installed on the rotating support (25). According to clause 5,
At least one elastic member 71, 72 is installed between the rotation support 25 and the rotary hammer 30 to transmit the rotational force of the rotation drive unit 60 to the rotary hammer 30 and Characterized by including an elastic excitation step (120) that expands and contracts in the rotational direction or reverse direction of the rotary hammer (30) so that the striking force is not attenuated by the striking hammer (55) and is transmitted to the arm crushing tooth (35). Rock crushing method using a rock crushing device.

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