WO2018230877A1

WO2018230877A1 - Excavator

Info

Publication number: WO2018230877A1
Application number: PCT/KR2018/006425
Authority: WO
Inventors: 정문교; 정영재
Original assignee: 정문교; 정영재
Priority date: 2017-06-14
Filing date: 2018-06-05
Publication date: 2018-12-20

Abstract

The present invention provides an excavator comprising: a boom rotatably coupled to an upper swiveling body rotatably mounted on a traveling body; an arm rotatably coupled to the boom; an attachment connected to and provided at the arm; a boom cylinder provided to connect the upper swiveling body and the boom, and generating a driving force so as to rotate the boom; an arm cylinder provided to connect the boom and the arm, and generating the driving force so as to rotate the arm; a plurality of arm vibration absorbing plates coupled and provided inside the arm, and absorbing vibration and impact force which are transmitted to the arm by the operation of the attachment; and a plurality of boom vibration absorbing plates coupled and provided inside the boom, and absorbing vibration and impact force which are transmitted to the boom.

Description

Excavators

The present invention relates to an excavator for digging in earth works, construction, construction sites, earth transport, building dismantling, ground cleaning work.

In general, an excavator is an equipment for construction as a construction machine that performs works such as excavation, digging, excavation, excavation, excavation, and crushing of the ground. It is composed of a traveling body that serves to move and the upper swinging body rotated 360 degrees and the attachment for the operation (attachment).

Here, in the construction of the excavator, the attachment is appropriately mounted and used in the excavator according to the soil and rock conditions, the type and use of the work, such as the bucket (breaker), breaker (crusher), crusher (crusher) , Drills, tongs and gourds.

These attachments can be interchanged and used according to the construction site situation. Typically, the bucket is responsible for general excavation and earth transportation, the breaker is used to crush hard ground, rock, etc. and the crusher is used to dismantle and crush the building. do.

As such, a variety of excavator attachments are applied to almost all construction works, and are effectively used in the right place for construction work such as drainage, pipe buried, building foundation floor digging, and earthwork.

By the way, when working with an attachment for excavator, the earth and vibration occurs because the earth is digging or cutting and drilling, and the vibration and shock is transmitted from the arm to the boom, the connection portion between the arm and attachment, the connection portion between the arm and the boom Along with reducing the lifespan, there is a problem that causes fatigue to workers and causes musculoskeletal disorders. In particular, when crushing the ground or rock using a breaker as an attachment for an excavator, there is a problem in that stable impact force is not transmitted to the ground or rock while vibration is distributed to the arm and the boom.

Conventionally, in order to solve this problem, a structure for additionally installing a passive or active vibration absorbing device pre-designed to the excavator itself is adopted. However, since the vibration absorbing device is provided as a separate component, installation is not easy. In addition, there is a problem that is applicable to only one type of excavator designed and difficult to apply to various types of excavators as the installation cost is high.

Such a technology related to an excavator having a vibration absorbing device is disclosed in Korean Patent Publication No. 2009-0111792 (2009.10.27).

An object of the present invention is to provide an excavator that can stably absorb vibrations and shocks generated from attachments.

The present invention is a boom rotatably coupled to an upper swinging body rotatably mounted on a traveling body, an arm rotatably coupled to the boom, an attachment connected to the arm and installed, connecting the upper swinging body and the boom. And a boom cylinder for generating a driving force so that the boom rotates, the boom and the arm for connecting, an arm cylinder for generating a driving force for rotating the arm, coupled to the inside of the arm, and the attachment A plurality of arm vibration absorbing plate for absorbing the vibration and impact force transmitted to the arm through the operation of the installation, coupled to the inside of the boom, a plurality of boom vibration absorbing plate for absorbing the vibration and impact force transmitted to the boom To provide an excavator.

The arm vibration absorbing plates may be disposed to be spaced apart from each other in the longitudinal direction of the arm, and the boom vibration absorbing plates may be disposed to be spaced apart from each other in the longitudinal direction of the boom.

In addition, one end of the arm vibration absorbing plate may be fixedly coupled to the inner surface of the arm, one end of the boom vibration absorbing plate may be fixedly coupled to the inner surface of the boom.

In addition, one end and the other end of the arm vibration absorbing plate may be fixedly coupled to the inner surface of the arm, and one end and the other end of the boom vibration absorbing plate may be fixedly coupled to the inner surface of the boom.

In addition, the arm vibration absorbing plate may have a cross-sectional shape that becomes wider in a direction toward the other end extending from the end coupled to the inner surface of the arm into the arm.

In addition, arm rotation grooves may be further formed on both sides between one end and the other end of the arm vibration absorbing plate.

In addition, the boom vibration absorbing plate may have a cross-sectional shape that becomes wider in a direction toward the other end extending from the one end coupled to the inner surface of the boom to the inside of the boom.

In addition, a boom rotating groove may be further formed at both sides between one end and the other end of the boom vibration absorbing plate.

The arm may further include an arm vibration absorbing fluid that absorbs the vibration and impact force transmitted to the arm, and further includes a boom vibration absorbing fluid that absorbs the vibration and impact force transmitted to the boom. can do.

In addition, the attachment is a breaker, and the inside of the attachment may be provided with a plurality of breaker vibration absorbing plate for absorbing vibration and impact force.

In addition, the inside of the arm is further provided with a plurality of arm vibration absorbing ball absorbing the vibration and impact force transmitted to the arm, the inside of the boom a plurality of boom vibration absorption absorbing the vibration and impact force transmitted to the boom A ball may be further provided.

The arm vibration absorbing plate may be disposed to be inclined in one direction of the arm based on the longitudinal direction of the arm, and the boom vibration absorbing plate may be disposed to be inclined in one direction of the boom based on the longitudinal direction of the boom. can do.

The apparatus may further include an arm auxiliary vibration transmitting member coupled to and coupled to the arm vibration absorbing plate, and further provided with a boom auxiliary vibration transmitting member coupled to and coupled to the boom vibration absorbing plate.

Excavator according to the present invention, the arm vibration absorbing plate is installed inside the arm, the boom vibration absorbing plate is installed in the boom bar, the vibration and impact force generated during operation through the operation of the attachment to the arm vibration absorbing plate and the boom vibration absorbing plate As it is absorbed through, the impact force by the attachment is increased by reducing the shaking of the arm and the boom, thereby improving workability and minimizing the transmission of vibration and impact force to the operator operating the excavator to suppress the occurrence of fatigue.

1 is a configuration cross-sectional view of an excavator according to an embodiment of the present invention.

FIG. 2 is a front view of the arm vibration absorbing plate shown in FIG. 1.

3 is a front view according to another embodiment of the arm vibration absorbing plate shown in FIG.

4 to 6 are cross-sectional views according to another embodiment of the arm shown in FIG.

7 to 9 are cross-sectional views according to another embodiment of the boom shown in FIG. 1.

10 is a perspective view of the breaker vibration absorbing plate shown in FIG. 1.

11 is a configuration cross-sectional view of an excavator according to another embodiment of the present invention.

12 to 14 is an amplitude comparison graph according to the acceleration value during the operation of the excavator and the conventional excavator according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration cross-sectional view of an excavator according to an embodiment of the present invention. Referring to FIG. 1, an excavator of one embodiment includes a traveling body 100, an upper swinging body 200, a boom 300, an arm 400, an attachment 500, a boom cylinder 600, and an arm cylinder 700. ), An arm vibration absorbing plate 800 and a boom vibration absorbing plate 900 are provided.

The traveling body 100 is configured to enable the movement of the excavator, it may be applied as a track or wheels. The upper pivot 200 is rotatably mounted 360 degrees to the traveling body 100 and includes a cab and a machine room.

The boom 300 is a part rotatably connected to the upper pivot 200. That is, one end in the longitudinal direction of the boom 300 is rotatably connected to one side of the upper swinging body 200, the boom 300 by the operation of the boom cylinder 600 will be described later The upper pivot 200 is rotated about the center. Here, the boom 300 is provided with a space portion therein, and is shown as having a vertical cross-sectional shape of the 'b' shape, but is not limited to this.

This, one side of the outer surface of the boom 300 is provided with a reinforcing member (301a) to increase the strength, it is possible to stably connect the arm cylinder 700 for moving the arm (400). The reinforcing member 301a is provided with a pin fastening portion 301b to rotatably connect the arm cylinder 700 to each other.

In addition, the boom 300 may have a structure in which a space is provided therein, and the vibration and impact force transmitted through the arm 400 to be described later in the boom 300, and through the upper pivot 200. It may be provided to be filled with the boom vibration absorbing fluid 310 to absorb the vibration and impact force transmitted. Here, the boom vibration absorbing fluid 310 is preferably water or oil, but is not limited to this can be applied to a variety of fluids of course.

In addition, a plurality of boom vibration absorbing balls 320 having a spherical shape may be inserted into the boom 300 and the space portion of the boom 300. The boom vibration absorbing ball 320 may absorb the vibration and impact force transmitted to the boom 300 while lowering the specific gravity of the boom vibration absorbing fluid 310 stored in the space portion of the boom 300. It may be formed of a soft rubber or synthetic resin material.

The arm 400 is a part rotatably connected to the boom 300. That is, one end in the longitudinal direction of the arm 400 is rotatably connected to the other end in the longitudinal direction of the boom 300, the arm 400 is operated by the operation of the arm cylinder 700 to be described later It is rotated about the boom 400. Here, the arm 400 is provided with a space portion therein, and illustrated as having a straight vertical cross-sectional shape, but is not limited thereto.

This, one side of the outer surface of the arm 400 is provided with a reinforcing member (401a) to increase the strength, it is possible to reliably connect the attachment cylinder 401 for moving the attachment 500. The reinforcing member 401a is provided with a pin fastening portion 401b so as to rotatably connect the attachment cylinder 401.

In addition, the arm 400 absorbs the vibration of the arm so as to absorb the vibration and impact force generated through the operation of the attachment 500, which will be described later, and the vibration and impact force transmitted through the arm vibration absorbing plate 800. The fluid 410 may be provided to be filled. Here, the arm vibration absorbing fluid 410 is preferably water or oil, but is not limited to this can be applied to a variety of fluids of course.

In addition, a plurality of arm vibration absorbing balls 420 having a spherical shape may be inserted into the arm 400 and the space portion of the arm 400. The arm vibration absorbing ball 420 may absorb the vibration and impact force transmitted to the arm 400 while lowering the specific gravity of the arm vibration absorbing fluid 410 stored in the space of the arm 400. It may be formed of a soft rubber or synthetic resin material.

In addition, the arm 400 may include an attachment cylinder 401 connected to the attachment 500 to be described later. That is, the body portion of the attachment cylinder 401 is rotatably connected to one side of the arm 400, the cylinder rod end of the attachment cylinder 401 is hinged rotatably to one side of the attachment 500 Leads to. The attachment cylinder 401 generates a driving force to rotate the attachment 500 about the other longitudinal end of the arm 400.

The attachment 500 is connected to the arm 400, and more specifically, the attachment 500 may be detachably connected to the other end of the arm 400 so as to be used in various ways according to the construction site. . The attachment 500 may be rotatably connected to the other end of the arm 400 in the longitudinal direction. In this case, the attachment 500 may include an attachment cylinder 401 provided in the arm 400 described above. It rotates according to the operation of.

Here, although the attachment 500 is shown to be applied to the selection of a breaker to crush hard ground or rock, etc., of course, but is not limited to this. As such, when the attachment 500 is a breaker, a plurality of breaker vibration absorbing plates 510 may be provided to absorb vibrations and impact forces generated when the ground or rock is broken. As such, the attachment 500 may be provided with a space in which the breaker vibration absorbing plate 510 may be combined and installed. Referring to FIG. 10, the breaker vibration absorbing plate 510 is symmetrically connected to both ends of the breaker connection end portion 511 for coupling one end to the inner surface of the attachment 500 and the other end of the connection end portion 511. The breaker vibration absorbing plate 510 may have a pair of triangular cross-sectional shapes, but the present invention is not limited thereto, and the breaker vibration absorbing plate 510 may be attached to the attachment 500 from one end of the attachment 500. ) It may be formed in a trapezoidal cross-sectional shape that becomes wider in the other end direction extending into the inside, it can be formed to have a variety of shapes in addition to this. Here, one end of the breaker vibration absorbing plate 510 may be coupled to any one of a welding structure, a bolting, and a rivet to an inner surface of the attachment 500, but is not limited thereto. Of course you can.

The boom cylinder 600 is a cylinder that generates a driving force to rotate the boom 300 in the upper pivot 200. This, the boom cylinder 600 is installed to connect the upper pivot 200 and the boom 300, more specifically, the body portion of the boom cylinder 600 of the upper pivot 200 It is rotatably connected to one side, the cylinder rod end of the boom cylinder 600 is rotatably connected to one side of the boom 300.

The arm cylinder 700 is a cylinder that generates a driving force to rotate the arm 400 in the boom 300. The arm cylinder 700 is installed to connect the arm 400 and the boom 300. More specifically, the body portion of the arm cylinder 700 is rotatable to one side of the boom 300. Is connected by a hinge, the cylinder rod end of the arm cylinder 700 is rotatably connected to one side of the arm 400.

The arm vibration absorbing plate 800 is a plate member that absorbs the vibration and impact force transmitted to the arm 400 while performing the operation according to the operation of the attachment 500. That is, the arm vibration absorbing plate 800 absorbs the vibration and impact force transmitted to the arm 400, thereby increasing the crushing force by the attachment 500. As such, the arm vibration absorbing plate 800 prevents the shaking of the arm 400 while absorbing the vibration and the impact force transmitted to the arm 400, the acceleration during the hit of the target by the attachment 500 While increasing the crushing force is to be transmitted stably, to enable a stable crushing of the object.

The arm vibration absorbing plate 800 is provided with a plurality of inserts inside the arm 400. In this case, the arm vibration absorbing plate 800 is preferably disposed to be spaced apart from each other in the longitudinal direction of the arm 400, but is not limited thereto. Of course. One end of the arm vibration absorbing plate 800 is coupled to the inner surface of the arm 400, and the other end of the arm vibration absorbing plate 800 extends into the arm 400. Here, one end of the arm vibration absorbing plate 800 is preferably coupled so as to be disposed perpendicular to the inner surface of the arm 400, but is not limited thereto. One end direction of the arm 400, that is, the boom ( By being inclined in an end direction connected to the 300, the vibration and impact force transmitted from the attachment 500 to the arm vibration absorbing plate 800 is transmitted to the arm vibration absorbing fluid 410, the length of the arm 400 The absorption efficiency of the vibration and impact force of the attachment 500 through the arm vibration absorbing fluid 410 may be increased while being transmitted in the other end direction more than the one direction based on the direction. In addition, as the length of the arm vibration absorbing plate 800 increases, the absorption efficiency of the vibration and impact force of the attachment 500 may be increased by increasing the moment of inertia of the vibration and impact force transmitted to the arm 400.

Referring to FIG. 2, the arm vibration absorbing plate 800 may be formed in a cross-sectional shape in which the width of the arm vibration absorbing plate 800 is widened toward the other end extending from the one end coupled to the inner surface of the arm 400 to the inside of the arm 400. However, the present invention is not limited thereto and may be formed in various shapes. As such, the arm vibration absorbing plate 800 is formed in a trapezoidal cross-sectional shape, so that the vibration and impact force transmitted to the arm 400 shake toward the rear end of the arm vibration absorbing plate 800 connected to the arm 400. This increases, so that the vibration and impact force through the shaking motion in the front and rear direction of the arm vibration absorbing plate 800 to be absorbed and removed. In addition, the arm vibration absorbing plate 800 is formed in a trapezoidal cross-sectional shape, the area in contact with the arm vibration absorbing fluid 410 increases toward the other end in the longitudinal direction of the arm vibration absorbing plate 800, thereby absorbing the arm vibration absorbing. The vibration and impact force to the fluid 410 is transmitted while being stably transmitted.

Here, referring to FIG. 3, as the arm vibration absorbing plate 801 according to another embodiment, an arm pivoting groove 810 may be formed at both side surfaces between one end and the other end of the arm vibration absorbing plate 801. The arm pivoting groove 810 shakes the arm vibration absorbing plate 801 while adding a rocking motion of the arm vibration absorbing plate 801 due to the vibration and impact force transmitted to the arm 400. By increasing the kinetic force it is possible to stably absorb the vibration and impact force.

Referring to FIG. 4, the arm vibration absorbing plate 801a according to another embodiment may be coupled to the inner surface of the arm 400 so as to extend in one direction from the other end of the arm 400. In this case, the arm vibration absorbing plate 801a may be installed on the inner surface of the arm 400 to be spaced apart from each other in the width direction.

5 and 6, both ends of the arm

vibration absorbing plates

801b and 801c of another embodiment, that is, one end in the longitudinal direction and the other end in the longitudinal direction of the arm

vibration absorbing plates

801b and 801c, respectively, may be formed. 400 may be coupled to be fixedly installed in a connected state on the inner surface of the mutually opposite.

The boom vibration absorbing plate 900 is a vibration and impact force transmitted to the boom 300 through the arm 400 and the upper pivot 200 while performing the operation according to the operation of the attachment 500. The plate member absorbs the vibration and impact force transmitted to the boom 300. That is, the boom vibration absorbing plate 900 absorbs the vibration and impact force transmitted to the boom 300, thereby increasing the crushing force by the attachment 500. As such, the boom vibration absorbing plate 900 prevents shaking of the boom 300 while absorbing the vibration and impact force transmitted to the boom 300, and the acceleration when the target is hit by the attachment 500 While increasing the crushing force is to be transmitted stably, to enable a stable crushing of the object.

Such, the boom vibration absorbing plate 900 is inserted into a plurality of the boom 300 inside the installation, in this case, it is preferable to be disposed to be spaced apart from each other in the longitudinal direction of the boom 300, but is not limited to this to be. One end of the boom vibration absorbing plate 900 is coupled to an inner surface of the boom 300, and the other end of the boom vibration absorbing plate 900 extends into the boom 300. Here, one end of the boom vibration absorbing plate 900 is preferably coupled so as to be disposed perpendicular to the inner surface of the boom 300, but is not limited thereto, and the other end in the longitudinal direction of the boom 300, that is, the upper pivot By being inclined in the end direction connected to the sieve 200, the vibration and impact force transmitted from the attachment 500 to the boom vibration absorbing plate 900 is transmitted to the boom vibration absorbing fluid 310, the boom 300 The transmission efficiency of the vibration 500 and the impact force of the attachment 500 through the boom vibration absorbing fluid 310 may be increased while being transmitted in the other direction than the one direction based on the longitudinal direction of the. In addition, as the length of the boom vibration absorbing plate 900 increases, absorption efficiency of the vibration and impact force of the attachment 500 may be increased by increasing an inertia moment for the vibration and impact force transmitted to the boom 300.

Referring to FIG. 2, the boom vibration absorbing plate 900 may be formed in a cross-sectional shape in which the width thereof becomes wider toward the other end extending from the one end coupled to the inner surface of the boom 300 to the inside of the boom 300. However, the present invention is not limited thereto and may be formed in various shapes. In this way, the boom vibration absorbing plate 900 is formed in a trapezoidal cross-sectional shape, the vibration and impact force transmitted to the boom 300 shakes toward the rear end of the boom vibration absorbing plate 900 connected to the boom 300 To increase the bar, the vibration and impact force through the shaking motion in the front and rear direction of the boom vibration absorbing plate 900 to be absorbed and removed. In addition, the boom vibration absorbing plate 900 is formed in a trapezoidal cross-sectional shape, the area in contact with the boom vibration absorbing fluid 310 increases toward the other end in the longitudinal direction of the boom vibration absorbing plate 900, thereby absorbing boom vibration absorbing. Vibration and impact force to the fluid 310 is to be transmitted while being stably transmitted.

Here, referring to FIG. 3, the boom vibration absorbing plate 901 according to another embodiment may include a boom pivot groove 910 formed at both sides between one end and the other end of the boom vibration absorbing plate 901. The boom pivot groove 910 shakes the boom vibration absorbing plate 901 while adding a rocking motion of the boom vibration absorbing plate 901 due to the vibration and impact force transmitted to the boom 300. By increasing the kinetic force it is possible to stably absorb the vibration and impact force.

Referring to FIG. 7, the boom vibration absorbing plate 901a according to another embodiment may be coupled to the inner side surface of the boom 300 so as to extend in one direction from the other end of the boom 300. At this time, the boom vibration absorbing plate (901a) may be installed in a plurality of spaced apart from each other in the width direction on the inner surface of the boom (300).

8 and 9, both ends of the boom

vibration absorbing plates

901b and 901c, that is, one end in the longitudinal direction and the other end in the longitudinal direction of the boom

vibration absorbing plates

901b and 901c, respectively, may be respectively used. 300 may be coupled to be fixedly fixed to the connected state on the inner surface of the mutually opposite.

The excavator of one embodiment, the storage portion of the boom vibration absorbing fluid 310 and the arm vibration absorbing fluid 410 into the space portion formed inside the boom 300 and the space formed inside the arm 400, respectively It may be provided with a fluid control unit 1000 to be adjusted. Here, the fluid control unit 1000 is a fluid movement pipe 1100 having one end in the longitudinal direction coupled to the boom 300 and the arm 400, respectively, so as to be connected to each space portion of the boom 300 and the arm 400, respectively. The fluid storage tank is connected to the other end of the fluid moving tube 1100 in the longitudinal direction, and stores the boom vibration absorbing fluid 310 and the arm vibration absorbing fluid 410 to be stored in the space portion of the boom 300 and the arm 400. 1400, the fluid movement pump 1300 connected to one side of the fluid movement pipe 1100, the boom 300 and the arm 400 are respectively installed in the traveling body 100 and the attachment 500 is generated Vibration measurement sensor 1200 for measuring the strength of the vibration and impact force transmitted, the vibration measurement sensor 1200 and the fluid movement pump 1300 is connected to the strength of the vibration and impact force detected by the vibration measurement sensor 1200 According to the boom 300 and the arm 400, respectively, while controlling the operation of the fluid movement pump 1300 It may include a pump control unit 1500 to control the storage amount of the absorbing fluid 310 and arm vibration-absorbing fluid (410). As such, when the vibration and impact force generated and transmitted from the traveling body 100 and the attachment 500 are large, the pumping control unit 1500 may move into the space portion of the boom 300 and the space portion of the arm 400. Each of the boom vibration absorbing fluid 310 and the arm vibration absorbing fluid 410 may control the operation of the fluid movement pump 1300 to increase the storage amount. On the contrary, when the vibration and the impact force generated and transmitted from the traveling body 100 and the attachment 500 are small, the pumping control unit 1500 moves to the space portion of the boom 300 and the space portion of the arm 400. Each of the boom vibration absorbing fluid 310 and the arm vibration absorbing fluid 410 may control the operation of the fluid movement pump 1300 to reduce the storage amount.

Referring to FIG. 11, the arm vibration absorbing plate 800 includes an arm auxiliary vibration transfer member 820 to increase the contact area with the arm vibration absorbing fluid 410 to stably absorb vibration and impact force. Can be equipped with a combination. Here, the arm auxiliary vibration transmission member 820 is preferably installed vertically connected to the arm vibration absorbing plate 800, but is not limited thereto. The arm auxiliary vibration transmission member 820 preferably uses any one of a plate member, a pin member, and a spring member, but is not limited thereto.

In addition, the boom vibration absorbing plate 900 may be provided with a boom auxiliary vibration transmission member 920 to increase the contact area with the boom vibration absorbing fluid 310 to stably absorb vibration and impact force. Here, the boom auxiliary vibration transmission member 920 is preferably installed perpendicularly to the boom vibration absorbing plate 900, but is not limited thereto. The boom auxiliary vibration transmission member 920 preferably uses any one of a plate member, a bar member, and a spring member, but is not limited thereto.

After fixing the plate to the ground in the state in which the breaker is applied with the attachment 500 in the excavator of the embodiment configured as described above, the acceleration measured at the portion of the arm 400 when the attachment 500 hits the plate The values are shown in Table 1 below.

측정 위치Measuring position	방향direction	측정된 가속도 최대값(g)Measured acceleration maximum (g)
측정 위치Measuring position	방향direction	1회1 time	2회Episode 2	3회3rd time	4회4 times	5회5 times
종래굴삭기 암Conventional Excavator Arm	전후order	5.325.32	6.546.54	6.546.54	4.294.29	5.025.02
	좌우Right and left	9.579.57	13.3813.38	9.689.68	8.568.56	11.0111.01
	상하Up and down	10.5210.52	15.0115.01	11.1911.19	10.1610.16	12.0912.09
일실시예굴삭기 암One Embodiment Excavator Arm	전후order	6.66.6	8.48.4	9.349.34	9.949.94	10.4610.46
	좌우Right and left	17.0417.04	16.5716.57	21.5621.56	22.1222.12	20.1720.17
	상하Up and down	21.1121.11	19.5919.59	25.4125.41	24.7124.71	24.2224.22

Table 1 and FIGS. 12 to 14, when installing the arm vibration absorbing plate 800 and the boom vibration absorbing plate 900 in the interior of the boom 300 and the arm 400, the acceleration value It can be seen that this is further increased, through which the impact force applied to the plate in the attachment 500 is further increased. As such, the displacement of the arm 400 and the boom 300 through the arm vibration absorbing plate 800 and the boom vibration absorbing plate 900, that is, the shaking in the front-back direction, the left-right direction, and the vertical direction is greatly reduced. It can be seen that while the acceleration value measured in the arm 400 is increased, in particular, the increase in the acceleration value in the vertical direction increases the pressing force through the attachment 500, the attachment 500 The impact force of the plate is increased by. In addition, the excavator according to an embodiment, the vibration and impact force generated in accordance with the operation of the attachment 500 has a constant impact on the regular waveform in the arm vibration absorbing plate 800 and the boom vibration absorbing plate 900 By absorbing, the vibration and impact force transmitted to the arm 400 and the boom 300 is minimized, and the connection portion between the arm 400 and the attachment 500, the arm 400 and the Excavator increases the service life by preventing damage from occurring while minimizing the transmission of vibration and impact force to the connecting portion of the boom 300 and the connecting portion of the boom 300 and the upper swinging body 200. It is possible to minimize the occurrence of fatigue to the operator of the operation.

As such, the excavator according to one embodiment, the arm vibration absorbing plate 800 is fixed to the interior of the arm 400, the boom vibration absorbing plate 900 is installed inside the boom 300 Bar, the arm 400 and the boom while allowing the vibration and impact force generated during operation through the operation of the attachment 500 is absorbed through the arm vibration absorbing plate 800 and the boom vibration absorbing plate 900 The impact force by the attachment 500 is increased by reducing the shaking of 300, thereby improving workability and minimizing the transmission of vibration and impact force to the operator operating the excavator, thereby suppressing the occurrence of fatigue.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims

A boom rotatably coupled to an upper swinging body rotatably mounted to the traveling body;

An arm rotatably coupled to the boom;

An attachment connected to the arm;

A boom cylinder installed to connect the upper pivot body and the boom and generating a driving force to rotate the boom;

An arm cylinder installed to connect the boom and the arm and generating a driving force to rotate the arm;

A plurality of arm vibration absorbing plates coupled to the inside of the arm and absorbing vibration and impact force transmitted to the arm through the operation of the attachment; And

And a plurality of boom vibration absorbing plates coupled to the inside of the boom and absorbing vibration and impact force transmitted to the boom.
The method according to claim 1,

The arm vibration absorbing plate is arranged to be spaced apart from each other in the longitudinal direction of the arm,

The boom vibration absorbing plate, the excavator disposed to be spaced apart from each other in the longitudinal direction of the boom.
The method according to claim 1,

One end of the arm vibration absorbing plate is fixedly coupled to the inner surface of the arm,

One end of the boom vibration absorbing plate is fixed to the inner surface of the boom excavator.
The method according to claim 1,

One end and the other end of the arm vibration absorbing plate is fixedly coupled to the inner surface of the arm,

One end and the other end of the boom vibration absorption plate is fixed to the inner surface of the boom excavator.
The method according to claim 3,

The arm vibration absorbing plate, the excavator having a cross-sectional shape that becomes wider toward the other end direction extending from the end coupled to the inner surface of the arm into the interior of the arm.
The method according to claim 4,

Excavator having an arm turning groove is further formed on both sides between one end and the other end of the arm vibration absorbing plate.
The method according to claim 3,

The boom vibration absorbing plate, the excavator having a cross-sectional shape that becomes wider toward the other end direction extending from the end coupled to the inner surface of the boom into the interior of the boom.
The method according to claim 7,

Excavator having a boom rotating groove is further formed on both sides between one end and the other end of the boom vibration absorbing plate.
The method according to claim 1,

The arm further includes an arm vibration absorbing fluid for absorbing the vibration and impact force transmitted to the arm,

Excavator further includes a boom vibration absorbing fluid in the boom to absorb the vibration and impact force transmitted to the boom.
The method according to claim 1,

The attachment is a breaker,

Excavator having a combination of a plurality of breaker vibration absorbing plate to absorb the vibration and impact force inside the attachment.
The method according to claim 1,

The arm further includes a plurality of arm vibration absorbing ball for absorbing the vibration and impact force transmitted to the arm,

Excavator further includes a plurality of boom vibration absorbing ball in the boom to absorb the vibration and impact force transmitted to the boom.
The method according to claim 2,

The arm vibration absorbing plate is disposed inclined in one direction of the arm relative to the longitudinal direction of the arm,

The boom vibration absorbing plate, the excavator is disposed inclined in one direction of the boom relative to the longitudinal direction of the boom.
The method according to claim 1,

Further provided with an arm auxiliary vibration transmission member coupled to the arm vibration absorbing plate,

Excavator further comprising a boom auxiliary vibration transmission member coupled to the boom vibration absorbing plate.