WO2021215862A1

WO2021215862A1 - Twin-head drum cutter and excavator comprising same

Info

Publication number: WO2021215862A1
Application number: PCT/KR2021/005135
Authority: WO
Inventors: 권대륙
Original assignee: Kwon Dae Ryuk
Priority date: 2020-04-24
Filing date: 2021-04-23
Publication date: 2021-10-28
Also published as: KR20220066879A; KR20210131619A

Abstract

The present invention relates to a twin-head drum cutter and an excavator comprising same, the twin-head drum cutter comprising: a connection frame connected to an arm of the excavator; a hydraulic motor which is detachably installed in the connection frame and is driven by hydraulic pressure; a pair of rotating drums respectively installed at opposite sides of the front end of the connection frame so as to be simultaneously rotated by the hydraulic motor; and a plurality of cutters arranged on each of the rotating drums spirally from the center of rotation. According to the present invention, because an effective arrangement structure of cutters and effective power usage of the hydraulic motor are enabled, as well as the drum cutter of the excavator being provided as a twin type, a strong crushing force can be generated and the operating efficiency can be improved. In addition, the excavator is not only used for various purposes such as profiling, trenching, soft rock crushing, quarry work, demolition, etc., but also may have excellent availability because a strength range of an object to be worked is wide as compared with a bucket, a hydraulic breaker, etc. In addition, a prefabricated assembly structure in which the hydraulic motor is easily replaced is provided, and thus, the time and costs for maintenance and repair can be reduced.

Description

Twin head drum cutter and excavator having same

The present invention relates to a drum cutter and an excavator having the same, and more particularly, not only consists of twin drum cutters, but also enables an efficient arrangement structure of the cutter and efficient use of power of a hydraulic motor, thereby generating strong crushing force. In addition to improving work efficiency and enabling use for various purposes, it provides excellent utilization due to the wide range of strength of the work object, and provides a prefabricated assembly structure that is easy to replace the hydraulic motor, which requires maintenance and repair. It relates to a twin-head drum cutter capable of reducing time and cost, and an excavator having the same.

In general, an excavator refers to a construction machine that performs crushing work such as excavation work to dig or fill the ground, breaker work such as light soil and rock crushing, compactor work such as soil compaction, and cutting during construction and civil engineering works. .

These excavators are usually equipped with an engine such as a diesel engine to obtain driving power, drive a hydraulic pump using the power of this engine, and supply hydraulic oil discharged from the hydraulic pump to a hydraulic actuator such as a hydraulic motor or a hydraulic cylinder. By doing so, rotation of the crawler or tire for traveling, and each working part such as a boom, an arm, and a bucket are operated.

Such an excavator is provided with a cutter at the end of the arm for excavation work. As a technique related to the cutter of the conventional excavator, the "excavator for tunnel construction" of Korean Utility Model No. 20-0288999 has been disclosed. It includes: a base portion having an arm engaging portion so as to be selectively mounted to an arm tip of an excavator or the like; a motor fixedly installed on the base part; A drum in the shape of a cylindrical container that is installed on the base part through a bearing so as to be rotatable by the motor, a plurality of crushing bits protrude like chestnuts over the entire outer surface, and the tip is closed in a bulging streamline shape. include

However, since the prior art has a limitation in being expanded and applied to various operations related to excavation, it is difficult to increase the utilization and does not provide a structure advantageous in terms of excavation efficiency, so improvement is required.

In addition, there is a case in which the conventional excavator is provided with an arcuate drum cutter, which is made in an arcuate shape, so that efficiency is also reduced, and since the hydraulic motor is welded to the frame, separation for repair or replacement of the hydraulic motor is difficult. Impossible, if there is a problem in the hydraulic base connected to the hydraulic motor, there was a problem that the entire excavator could not be used.

In order to solve the problems of the prior art, the present invention not only configures the drum cutter of the excavator in twins, but also enables an efficient arrangement structure of the cutter and efficient use of power of the hydraulic motor to generate a strong crushing force. This improves work efficiency and makes it possible to use it for various purposes such as profiling, trenching, soft rock crushing, quarry work, and demolition. It is excellent and aims to reduce the time and cost required for maintenance and repair by providing a prefabricated assembly structure that is easy to replace the hydraulic motor.

In order to solve the above problems, according to an aspect of the present invention, a connection frame connected to the arm of the excavator; a hydraulic motor detachably mounted in the connection frame and driven by hydraulic pressure; a pair of rotating drums respectively installed on both sides of the front end of the connection frame to rotate simultaneously by the hydraulic motor; and a cutter provided to be arranged in a plurality of spirals from the center of rotation on each of the rotating drums. Containing, a twin-head drum cutter is provided.

The connecting frame may include a connecting member for connecting to the arm; and a frame body coupled to the connection member and configured to accommodate the rotary drum and mount the rotary drum.

The rotating drum may include a shaft receiving portion coupled to pass through the connecting frame; a driving shaft that penetrates through the shaft receiving portion and is rotatably installed through a bearing and receives rotational force from the hydraulic motor; and a drum body fixed to both ends of the drive shaft, respectively, and provided with a plurality of the cutters on the outer surface.

Further comprising a gear assembly provided on the connection frame to transmit a rotational force from the hydraulic motor to the drive shaft, the gear assembly, The gear assembly, the drive gear fixed to the rotation shaft of the hydraulic motor is installed on the connection frame; a connecting gear gear-coupled to the driving gear; a fixed shaft passing through the center of the connecting gear through a bearing and fixed to the connecting frame; and a driven gear coupled to the connecting gear and fixed to the driving shaft.

The cutter may be installed to form an inclination angle with respect to a tangent to the outer circumferential surface of the rotating drum so that the end faces obliquely with respect to the crushing target.

The cutter may be fixed so that one end protrudes from the cutter fixing part fixed by welding to form the inclination angle on the outer surface of the rotating drum.

According to another aspect of the present invention, a vehicle body capable of driving by operation; a boom rotatably installed on the vehicle body by driving a boom cylinder; an arm rotatably installed on the boom by driving an arm cylinder; and a drum cutter rotatably installed at the end of the arm by driving of a cutter cylinder and rotated for crushing by hydraulic pressure provided from the vehicle body, wherein the drum cutter according to an aspect of the present invention An excavator with a twin head drum cutter comprising a twin head drum cutter is provided.

According to the twin-head drum cutter and the excavator having the same according to the present invention, the drum cutter of the excavator is configured as twin, and by enabling an efficient arrangement structure of the cutter and efficient use of power of the hydraulic motor, a strong crushing force is generated It can improve work efficiency, and can be used for various purposes such as profiling, trenching, soft rock crushing, quarry work, and demolition. By providing a prefabricated assembly structure in which the hydraulic motor can be easily replaced, the time and cost required for maintenance can be reduced.

1 is an exploded perspective view showing a twin-head drum cutter according to an embodiment of the present invention.

2 is a perspective view illustrating a twin-head drum cutter according to an embodiment of the present invention.

Figure 3 is a partial side view for explaining the operation of the twin-head drum cutter according to an embodiment of the present invention.

Figure 4 shows the strength range of the crushing object of the twin-head drum cutter according to an embodiment of the present invention compared to the prior art, (a) shows a bucket, (b) shows the present invention, (c) denotes a hydraulic breaker.

5 is a side view illustrating an excavator having a twin head drum cutter according to an embodiment of the present invention.

Since the present invention can have various embodiments with various modifications, specific embodiments will be described with reference to the drawings as an example. In addition, it should be understood that the present invention is not limited to these specific embodiments, and includes all modifications, equivalents or substitutes included in the technical spirit of the present invention.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings, and the same reference numbers are assigned to the same or corresponding components regardless of reference numerals, and overlapping description thereof will be omitted. do it with

1 is an exploded perspective view illustrating a twin-head drum cutter according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a twin-head drum cutter according to an embodiment of the present invention.

1 and 2 , the twin head drum cutter 100 according to an embodiment of the present invention may include a connection frame 110 , a hydraulic motor 120 , a rotating drum 130 and a cutter 140 . can

The connection frame 110 is connected to the arm of the excavator, and while removably accommodating the hydraulic motor 120 to be described later, the rotary drum 130 may be rotatably installed.

The connecting frame 110 includes a connecting member 111 to be connected to the arm, and a frame body 112 coupled to the connecting member 111 to accommodate the rotating drum 130 and to enable the mounting of the rotating drum 130 . ) may be included. The frame body 112 may be coupled to the connection member 111 by fastening the coupling bolt 112b to the coupling plate 112a provided at the upper end, and a gasket 112e to the upper opening 112c provided at the top. The upper cover (112d) may be opened and closed with a coupling bolt so as to be interposed therebetween. The frame body 112 may provide a plurality of cover assembly structures for opening and closing the receiving space inside, for example, the side cover 112g is connected to a plurality of side openings 112f provided on the side by fastening the coupling bolts. It may be installed so as to be able to open and close, and the main cover 112i for full opening and closing of one side may be installed by fastening the coupling bolt. The frame body 112 may be provided with a shaft coupling hole (112h) to be installed so that the drive shaft 132 of the rotary drum 130 is penetrated at the lower end.

The hydraulic motor 120 is detachably mounted in the connection frame 110 and driven by hydraulic pressure. The hydraulic pressure required for driving is supplied from a hydraulic pressure supply unit provided in the excavator, and control of this operation is provided in the operator's seat of the excavator. It may be performed by manipulating the control panel, which is not necessarily limited thereto, and may also be performed by manipulating a separate control panel that is drawn out if necessary.

The hydraulic motor 120 may be detachably fixed in the frame body 112 of the connection frame 110 by the coupling flange 122 provided on the circumference of one side by the coupling bolt 123 .

The rotating drum 130 is made of twin, that is, a pair, and is installed on both sides of the front end of the connection frame 110 to rotate simultaneously by the hydraulic motor 120 .

The rotating drum 130 may be rotatably installed through a bearing 132a through a shaft receiving part 131 coupled to pass through the connection frame 110 and a bearing 132a through the shaft receiving part 131, and a hydraulic motor The drive shaft 132 receiving rotational force from 120 may be fixed to both ends of the drive shaft 132, respectively, and may include a drum body 133 provided with a plurality of cutters 140 on the outer surface.

The shaft receiving portion 131 is made of a hollow member, and the coupling flange 131a provided on the outer circumferential surface in the state inserted into the shaft coupling hole 112h is coupled to the shaft coupling member 112h by the fastening of the coupling bolt 131b. It may be coupled around, and an oil seal 131c for preventing leakage may be installed. The drive shaft 132 may be rotatably installed in the shaft receiving portion 131 by a bearing 132a, and is separated from the bearing 132a by installing a lock nut 132c and a fixing piece 132d provided at the end. Separation is suppressed, and coupling portions 132e for coupling to the drum body 133 may be provided at both ends, respectively. The drum body 133 may be coupled to rotate together with the driving shaft 132 by coupling a coupling part 133a provided in the center to the coupling part 132e of the driving shaft 132 with a coupling bolt 133b.

The gear assembly 150 may be installed in the connection frame 110 to transmit rotational force from the hydraulic motor 120 to the drive shaft 132 .

The gear assembly 150 includes a drive gear 151 fixed to the rotation shaft 121 of the hydraulic motor 120 and installed on the connection frame 110, and a connection gear 152 gear-coupled to the drive gear 151, A fixed shaft 153 that passes through the center of the connecting gear 152 through a bearing 153a and is fixed to the connecting frame 110, and may be gear-coupled to the connecting gear 152, and the driving shaft 132. It may include a fixed driven gear (154). The driving gear 151 may be fixed to the rotation shaft 121 of the hydraulic motor 120 which is rotationally supported by the bearing 151z. The fixed shaft 153 may have an end fixed to any one of the side covers 112g by a coupling bolt 153b, and the connecting gear 152 may be rotatably coupled by a bearing 153a.

The cutters 140 are provided to be arranged in a plurality of spirals from the center of rotation on each of the rotating drums 130 . The cutter 140 may be made of a high-hardness metal alloy having sufficient strength for crushing.

Referring to FIG. 3 , the cutter 140 may be installed to form an inclination angle θ with respect to the tangent T to the outer circumferential surface of the rotary drum 130 so that the end faces obliquely with respect to the crushing target 1 . Here, the inclination angle θ may be 20 to 50 degrees, which may be appropriately selected in consideration of the strength of the crushing target 1 , the torque of the hydraulic motor 120 , the hardness and number of the cutter 140 , and the like. The cutter 140 may be fixed with one end protruding from the cutter fixing part 141 fixed by welding to form an inclination angle on the outer surface of the rotating drum 130 . Accordingly, a large number of cutters 140 can be easily installed by the cutter fixing unit 141 .

Referring to Figure 4, the twin head drum cutter 100 according to an embodiment of the present invention in the case of the present invention (b), compared to the conventional bucket (a) or hydraulic breaker (c), the crushing target to be applied Since the strength range is widened, it can be seen that it can be utilized for various purposes.

5 is a side view illustrating a cutting machine having a twin head drum cutter according to an embodiment of the present invention.

Referring to FIG. 5 , the cutting machine 200 having a twin-head drum cutter according to an embodiment of the present invention may include a vehicle body 210 , a boom 220 , an arm 230 , and a drum cutter. Here, since the drum cutter is the same as the twin-head drum cutter 100 according to the embodiment of the present invention, the overlapping description will be omitted.

The vehicle body 210 uses power generated from the engine to enable driving by the driver's manipulation. As in the present embodiment, the vehicle body 210 may be formed of not only a caterpillar type but also a wheel type, as well as driving operation from the driver's seat, which will be described later. The boom 220 , the arm 230 , and the like, as well as the operation of the twin head drum cutter 100 can be manipulated. The vehicle body 210 may be provided with a hydraulic pressure supply unit for supplying hydraulic pressure required for the operation of various hydraulic cylinders required for various operations as well as the operation of the twin-head drum cutter 100 . The hydraulic supply unit, for example, drives a hydraulic pump by using the engine power of the vehicle body 210, and supplies hydraulic oil discharged from the hydraulic pump to the hydraulic motor 120 or various hydraulic cylinders 221,231,232.

The boom 220 is hinged to the vehicle body 210 and is rotatably installed by driving the boom cylinder 221 operating hydraulically. Both ends of the boom cylinder 221 are hinge-coupled to the vehicle body 210 and the boom 220 , thereby enabling the natural behavior of the boom 220 when driven.

The arm 230 is hinged to the boom 220 and is rotatably installed by driving the arm cylinder 231 . Both ends of the arm cylinder 231 are hinged to the boom 220 and the arm 230 , so that the arm 230 can naturally move when driven.

The twin-head drum cutter 100 may be rotatably installed at the end of the arm 230 by driving the cutter cylinder 232, and rotated for crushing by hydraulic pressure provided from the vehicle body 210, The end of the arm 230 may be hinged to the connecting member 111, and the cutter cylinder 232, the end of which is hinged to the arm 230, is connected by a plurality of

link members

233 and 234, so that the cutter cylinder ( 232) to enable a natural behavior of the twin-head drum cutter 100 when driving.

The twin-head drum cutter according to the present invention and the excavator having the same according to the present invention enable the burial of the pipeline by excavation of the ground, and can perform tunnel and underground construction work, and concrete due to crushing of concrete, etc. Demolition and remodeling of structures may be performed, and not only leveling work on the ground, but also chamfering or excavation work for mines or quarries may be performed, and work in water may also be possible.

According to the present invention, as well as configuring the drum cutter of the excavator in twins, by enabling an efficient arrangement structure of the cutter and efficient use of power of the hydraulic motor, it is possible to generate a strong crushing force, thereby improving work efficiency.

In addition, according to the present invention, it not only enables use for various purposes such as profiling, trenching, soft rock crushing, quarry work, demolition, etc., but also has a wide range of strength of the work object compared to a bucket or a hydraulic breaker and has excellent utilization. can make it

In addition, according to the present invention, by providing a prefabricated assembly structure that is easy to replace the hydraulic motor, it is possible to reduce the time and cost required for maintenance and repair.

Although the present invention has been described with reference to the accompanying drawings as described above, various modifications may be made without departing from the spirit of the present invention. Accordingly, the scope of the present invention should not be limited to the above-described embodiments, but should be defined by the claims and their equivalents.

The present invention can be applied to a drum cutter and an excavator having the same.

Claims

a connecting frame connected to the arm of the excavator;

a hydraulic motor detachably mounted in the connection frame and driven by hydraulic pressure;

a pair of rotating drums respectively installed on both sides of the front end of the connection frame to rotate simultaneously by the hydraulic motor; and

a cutter provided to be arranged in a plurality of spirals from the center of rotation on each of the rotating drums;

Including, twin head drum cutter.
The method according to claim 1,

The connection frame is

a connecting member for connecting to the arm; and

a frame body coupled to the connecting member and configured to accommodate the rotating drum and to enable the mounting of the rotating drum;

Including, twin head drum cutter.
The method according to claim 1,

The rotating drum is

a shaft receiving portion coupled to pass through the connection frame;

a driving shaft that penetrates through the shaft receiving portion and is rotatably installed through a bearing and receives rotational force from the hydraulic motor; and

a drum body fixed to both ends of the drive shaft and provided with a plurality of cutters on an outer surface;

Including, twin head drum cutter.
4. The method according to claim 3,

Further comprising a gear assembly installed in the connection frame to transmit a rotational force from the hydraulic motor to the drive shaft,

The gear assembly is

a driving gear fixed to the rotation shaft of the hydraulic motor and installed on the connection frame;

a connecting gear gear-coupled to the driving gear;

a fixed shaft passing through the center of the connecting gear through a bearing and fixed to the connecting frame; and

a driven gear coupled to the connecting gear and fixed to the drive shaft;

Including, twin head drum cutter.
The method according to claim 1,

The cutter is

A twin-head drum cutter and an excavator having the same, which are installed to form an inclination angle with respect to a tangent to the outer circumferential surface of the rotating drum so that the end faces obliquely with respect to the crushing target.
6. The method of claim 5,

The cutter is

A twin-head drum cutter and an excavator having the same, wherein one end is fixed to a cutter fixing part fixed by welding to form the inclination angle on the outer surface of the rotating drum so that one end protrudes.
A vehicle body capable of driving by operation;

a boom rotatably installed on the vehicle body by driving a boom cylinder;

an arm rotatably installed on the boom by driving an arm cylinder; and

and a drum cutter which is rotatably installed at the end of the arm by driving of a cutter cylinder and rotates for crushing by hydraulic pressure provided from the vehicle body;

The drum cutter,

The excavator provided with the twin-head drum cutter which consists of the twin-head drum cutter in any one of Claims 1-6.