WO2014076761A1 - 油圧ショベル - Google Patents
油圧ショベル Download PDFInfo
- Publication number
- WO2014076761A1 WO2014076761A1 PCT/JP2012/079382 JP2012079382W WO2014076761A1 WO 2014076761 A1 WO2014076761 A1 WO 2014076761A1 JP 2012079382 W JP2012079382 W JP 2012079382W WO 2014076761 A1 WO2014076761 A1 WO 2014076761A1
- Authority
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- WIPO (PCT)
- Prior art keywords
- pair
- antenna support
- support portions
- passage
- disposed
- Prior art date
Links
- 239000013256 coordination polymer Substances 0.000 abstract description 24
- 230000001133 acceleration Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0833—Improving access, e.g. for maintenance, steps for improving driver's access, handrails
Definitions
- the present invention relates to a hydraulic excavator that can be equipped with a GNSS antenna.
- a hydraulic excavator having a pair of antennas for RTK-GNSS (Real Time Kinematic-Global Navigation Satellite Systems, GNSS is a global navigation satellite system) is known (for example, see Patent Document 1).
- the pair of antennas are installed on the counterweight.
- a hydraulic excavator includes a pair of a lower traveling body, an upper swing body, a counterweight, a machine room, a cab, a passage, a staircase, and a pair of antennas.
- the upper swing body is pivotably mounted on the lower traveling body.
- the counterweight is disposed on the upper swing body.
- the machine room is disposed in front of the counterweight on the upper swing body.
- the cab is disposed in front of the machine room on the upper swing body.
- the passage is formed on the machine room.
- the staircase is connected to the machine room and continues to the passage.
- the pair of antenna support portions are separated from the turning center of the upper turning body by a quarter or more of the vehicle width in the top view, and closer to the turning center than the position farthest from the turning center among the passages and stairs.
- the hydraulic excavator according to the first aspect of the present invention makes it possible to bring the pair of antennas closer to the turning center than when the pair of support portions are disposed on the counterweight. Therefore, since the acceleration concerning a 1st and 2nd GNSS antenna can be reduced at the time of a turning start or completion
- the hydraulic excavator according to the second aspect of the present invention relates to the first aspect, and the pair of antenna support portions are located on the machine room, the cab, or the stairs in the top view.
- the pair of antenna support portions since the pair of antenna support portions does not protrude outside the hydraulic excavator, the pair of antennas can be prevented from contacting an obstacle or the like.
- the hydraulic excavator according to the third aspect of the present invention relates to the first or second aspect, and includes a pair of handrails disposed on the machine room.
- the pair of antenna support portions is connected to the pair of handrails.
- the pair of antenna support portions can be reduced in size.
- the hydraulic excavator according to the fourth aspect of the present invention relates to the first or second aspect, and includes a pair of handrails disposed on the machine room.
- the pair of antenna support portions are part of the pair of handrails.
- the pair of antenna support portions can be reduced in size.
- the hydraulic excavator according to the fifth aspect of the present invention relates to the third aspect, and the pair of antenna support portions are located on the opposite side of the passage with respect to the pair of handrails in a top view.
- the operator can recognize that the pair of antenna support portions is not a handrail. Therefore, it is not necessary to increase the strength of the pair of antenna support portions as much as the handrail.
- a hydraulic excavator relates to any one of the first to fifth aspects, and includes a pair of antennas detachably attached to the pair of antenna support portions.
- the operator can easily attach and detach the pair of antennas at the start or end of work.
- a hydraulic excavator relates to any one of the first to sixth aspects, wherein the machine room is an engine room disposed in front of the counterweight, and an apparatus disposed in front of the engine room. And a chamber. The passage is formed on the equipment room. The staircase is arranged in front of the equipment room. (The invention's effect) ADVANTAGE OF THE INVENTION According to this invention, the hydraulic shovel which can improve the measurement precision of a position coordinate can be provided.
- FIG. 1 Front perspective view of hydraulic excavator Rear perspective view of hydraulic excavator Top view of equipment room Top view showing the arrangement area of the pair of antenna support parts
- the figure which shows the structure of a pair of antenna support part The figure which shows the structure of a pair of antenna support part
- FIG. 1 is a front perspective view of the excavator 100.
- FIG. 2 is a rear perspective view of the excavator 100.
- the excavator 100 includes a lower traveling body 10, an upper swing body 11, a counterweight 12, an engine room 13, an equipment room 14, a work machine 15, a cab 16, a staircase 17, a passage 18, a first handrail 19, and a second handrail. 20, a third handrail 21, a first GNSS antenna 22, and a second GNSS antenna 23.
- the lower traveling body 10 has a pair of crawler belts 10a and 10b that can rotate independently of each other.
- the excavator 100 moves back and forth and right and left by rotating the pair of crawler belts 10a and 10b.
- the upper turning body 11 is mounted on the lower traveling body 10 so as to be turnable.
- the upper turning body 11 can turn around a turning center CP (see FIG. 3) parallel to the vertical direction.
- the upper swing body 11 constitutes a vehicle body frame of the excavator 100.
- a counterweight 12 On the upper swing body 11, a counterweight 12, an equipment room 14, an engine room 13 and a cab 16 are arranged.
- the counterweight 12 is arranged on the most rear side on the upper swing body 11.
- the counterweight 12 is formed, for example, by putting scrap iron or concrete into a box assembled from steel plates.
- the counterweight 12 is used for maintaining the vehicle body balance during excavation work or the like.
- the engine room 13 is disposed on the upper swing body 11.
- the engine compartment 13 is disposed in front of the counterweight 12.
- the engine room 13 is disposed behind the equipment room 14.
- the engine chamber 13 houses an engine, an exhaust gas processing device, and the like (not shown).
- An engine hood 13 a that can be opened and closed is disposed above the engine chamber 13. The operator can stand in the passage 18 and open the engine hood 13a when performing maintenance in the engine compartment 13.
- the equipment room 14 is disposed between the engine room 13 and the work implement 15 on the upper swing body 11.
- the equipment room 14 includes a fuel tank 14a and a hydraulic oil tank 14b.
- the upper surface 14S of the equipment chamber 14 is formed in an L shape as shown in FIG.
- the engine room 13 and the equipment room 14 constitute a “machine room” in which a passage 18 is formed on the upper side.
- the work machine 15 is swingably attached to the front side on the upper swing body 11.
- the work machine 15 is disposed in front of the equipment room 14.
- the work machine 15 is pivotally supported by the upper swing body 11 between the cab 16 and the stairs 17.
- the cab 16 is disposed on the upper swing body 11.
- the cab 16 is provided in front of the equipment room 14 and on the left side of the work machine 15 so that the operator can look over the movement of the work machine 15.
- a driver's seat on which an operator is seated is arranged in the cab 16.
- the staircase 17 is used for raising and lowering between the ground and the passage 18.
- the staircase 17 is connected to the right front of the equipment room 14.
- the staircase 17 continues to the right front of the passage 18.
- the staircase 17 has a first step 17a and a second step 17b. The operator can ascend to the passage 18 by placing his / her feet sequentially on the first step 17a and the second step 17b.
- the passage 18 is formed on the equipment room 14.
- the passage 18 is a substantially planar region in the upper surface 14 ⁇ / b> S of the equipment chamber 14.
- the passage 18 is an area where the operator can place his / her foot on the upper surface 14 ⁇ / b> S of the equipment room 14.
- the passage 18 according to the present embodiment is formed in an L shape according to the shape of the upper surface 14 ⁇ / b> S of the equipment chamber 14.
- the surface of the passage 18 is anti-slip processed. Specifically, a plurality of hemispherical protrusions are formed on the surface of the passage 18. Such an anti-slip process may be formed on the entire surface of the passage 18.
- the first and second handrails 19 and 20 are disposed on the equipment room 14.
- the first and second handrails 19 and 20 are provided at the edge of the passage 18 and are used by an operator standing in the passage 18 to support the body.
- the first handrail 19 and the second handrail 20 are separated from each other in the left-right direction. Therefore, an operator standing between the first handrail 19 and the second handrail 20 can open the engine hood 13a and perform maintenance in the engine chamber 13.
- the first handrail 19 is disposed on the left end portion of the equipment room 14.
- the second handrail 20 is disposed on the right end portion of the equipment room 14.
- the second handrail 20 is disposed so as to straddle the fuel tank 14a and the hydraulic oil tank 14b.
- each of the first and second handrails 19 and 20 is formed in an L shape in a top view. Specifically, in a top view, one side of the L shape extends in the front-rear direction along the left and right end surfaces of the upper swing body 11, and the other side of the L shape extends from the rear end of one side to the inner side of the upper swing body 11. It extends towards.
- first handrail 19 is connected to the first antenna support portion 19a.
- the first antenna support portion 19 a is a bracket for attaching the first GNSS antenna 22.
- a second antenna support portion 20a is connected to the second handrail 20.
- the second antenna support portion 20a is a bracket for attaching the second GNSS antenna 23. The arrangement and configuration of the first and second antenna support portions 19a and 20a will be described later.
- the third handrail 21 is disposed in front of the first handrail 19 and on the right side of the stairs 17.
- the third handrail 21 is used by an operator who moves up and down the stairs 17 to support the body.
- the first and second GNSS antennas 22 and 23 are antennas used for RTK-GNSS (Real Time Kinematic-Global Navigation Satellite Systems, GNSS is a global navigation satellite system).
- the first GNSS antenna 22 is attached to the first antenna support portion 19 b of the first handrail 19.
- the second GNSS antenna 22 is attached to the second antenna support portion 20 b of the second handrail 20.
- the excavator 100 calculates the global coordinates of the turning center CP of the upper turning body 11 based on information included in the satellite radio waves received by the first and second GNSS antennas 22 and 23, respectively. The position accuracy of such global coordinates generally becomes higher as the first and second GNSS antennas 22 and 23 are closer to the turning center CP.
- FIG. 3 is a top view of the equipment room 14.
- FIG. 4 is a top view showing the arrangement region 200 (the shaded portion in FIG. 4) of the first and second antenna support portions 19a and 20a.
- the stairs 17 are connected to the right front of the passage 18.
- the second step 17b is disposed in front of the passage 18, and the first step 17a is disposed in front of the second step 17b.
- the position farthest from the turning center CP in the stairs 17 is the right front end 17S.
- the passage 18 extends in an L shape behind the staircase 17.
- the position farthest from the turning center CP in the passage 18 is the left rear end 18S.
- the first interval L1 between the right front end 17S of the staircase 17 and the turning center CP is smaller than the second interval L2 between the left rear end 18S of the passage 18 and the turning center CP. Therefore, in the present embodiment, the position farthest from the turning center CP among the stairs 17 and the passage 18 is the left rear end 18S of the passage 18.
- the first and second antenna support portions 19 a and 20 a are connected to the first and second handrails 19 and 20.
- the first and second antenna support portions 19a and 20a are arranged on the left and right with respect to the center line CL.
- the first and second antenna support portions 19a and 20a are positioned symmetrically with respect to the center line CL.
- the first and second antenna support portions 19 a and 20 a are located behind the first and second handrails 19 and 20.
- the first and second antenna support portions 19 a and 20 a are located behind the passage 18.
- the first and second antenna support portions 19a and 20a are provided on the opposite side of the passage with respect to the first and second handrails 19 and 20.
- the first and second antenna support portions 19 a and 20 a are disposed on the boundary line between the engine room 13 and the equipment room 14.
- the first and second antenna support portions 19a and 20a are arranged at positions spaced apart from the turning center CP by a predetermined distance. Specifically, the first and second antenna support portions 19 a and 20 a are arranged in the arrangement region 200.
- the arrangement region 200 is set in an annular shape when viewed from above.
- the arrangement region 200 is a region that is separated from the turning center CP by 1 ⁇ 4 or more of the vehicle width W and closer to the turning center CP than the left rear end 18S of the passage 18.
- the third distance L3 between the first antenna support portion 19a and the turning center CP is defined by the following equation (1).
- the vehicle width W of the excavator 100 is set as appropriate depending on the model and function, and is assumed to be, for example, about 2 m to 10 m.
- first and second antenna support portions 19 a and 20 a are arranged on the boundary between the engine room 13 and the equipment room 14.
- the first and second antenna support portions 19 a and 20 a do not protrude outside the excavator 100. That is, the first and second antenna support portions 19 a and 20 a are preferably disposed on the engine room 13, the equipment room 14, the cab 16, or the stairs 17.
- the first and second antenna support portions 19 a and 20 a are disposed on the inner side of the hydraulic shovel 100 by a predetermined distance from the outer edge.
- the fifth interval L5 between the first and second antenna support portions 19a, 20a is preferably not less than 1/4 of the vehicle width W, and more preferably not less than the third interval L3 and the fourth interval L4. preferable.
- the arrangement positions of the first and second GNSS antennas 22 and 23 are the first and second described above. This is the same as the arrangement position of the antenna support portions 19a and 20a.
- FIG. 5 is a diagram showing a state in which the second GNSS antenna 23 is attached to the second antenna support portion 20a.
- FIG. 6 is a diagram illustrating a state where the second GNSS antenna 23 is detached from the second antenna support portion 20a.
- the second antenna support portion 20a is a bracket constituted by a circular tube bent in an L shape.
- the second antenna support portion 20 a is disposed so as to extend rearward and upward from the rear end portion of the second handrail 20. Since the passage 18 is forward from the rear end portion of the second handrail 20, the second antenna support portion 20 a is disposed on the opposite side of the passage 18 with the second handrail 20 in between.
- the height of the antenna support 20a is preferably equal to the height of the second handrail 20.
- the second GNSS antenna 23 is disposed on the second antenna support portion 20a.
- the second GNSS antenna 23 is preferably arranged at a position higher than the second handrail 20 in order to receive GNSS satellite radio waves satisfactorily.
- the second GNSS antenna 23 has a knob 23a for fastening the second GNSS antenna 23 itself to the second antenna support portion 20a.
- a cable 30 for transmitting position information to the controller is connected to the second GNSS antenna 23.
- the second GNSS antenna 23 is preferably arranged at a position higher than the upper end of the cab 16 in order to receive GNSS satellite radio waves satisfactorily.
- the cap 40 is fitted into the second antenna support portion 20a.
- the first and second antenna support portions 19a, 20a are separated from the turning center CP by a quarter or more of the vehicle width W in top view, and It is closer to the turning center CP than the left rear end 18S of the passage 18.
- the left rear end 18 ⁇ / b> S of the passage 18 is a position farthest from the turning center CP among the stairs 17 and the passage 18.
- the first and second GNSS antennas 22 and 23 can be brought closer to the turning center CP than when the first and second antenna support portions 19a and 20a are disposed on the counterweight 12. Therefore, since the acceleration concerning the 1st and 2nd GNSS antennas 22 and 23 can be reduced at the time of the turning start or end of the upper swing body 12, the 1st and 2nd GNSS antennas 22 and 23 can be operated stably.
- the first and second GNSS antennas 22 and 23 are sufficiently separated from each other as compared with the case where the first and second antenna support portions 19a and 20a are arranged close to a region within 1/4 of the vehicle width W. be able to. Therefore, the position accuracy of the global coordinates of the turning center CP calculated based on information received by the first and second GNSS antennas 22 and 23 can be improved.
- the first and second antenna support portions 19 a and 20 a are disposed on the boundary between the engine room 13 and the equipment room 14.
- the first and second antenna support portions 19a and 20a do not protrude to the outside of the excavator 100, the first and second GNSS antennas 22 and 23 can be prevented from coming into contact with obstacles.
- the first and second antenna support portions 19a and 20a are connected to the first and second handrails 19 and 20, respectively.
- the first and second antenna support portions 19a and 20a can be reduced in size.
- the first and second antenna support portions 19a and 20a are located on the opposite side of the passage 18 with respect to the first and second handrails 19 and 20.
- the operator can recognize that the first and second antenna support portions 19a and 20a are not handrails. Therefore, it is not necessary to make the first and second antenna support portions 19a and 20a as strong as the handrail.
- the first and second GNSS antennas 22 and 23 are detachably attached to the first and second antenna support portions 19a and 20a.
- the first and second antenna support portions 19a and 20a are arranged on the boundary between the engine room 13 and the equipment room 14, but the present invention is not limited to this.
- the first and second antenna support portions 19 a and 20 a may be disposed on the cab 16 or the stairs 17.
- the first and second antenna support portions 19a and 20a are positioned symmetrically with respect to the center line CL.
- the interval between the first antenna support portion 19a and the center line CL may be different from the interval between the second antenna support portion 20a and the center line CL.
- both the first and second antenna support portions 19a and 20a may be disposed on one of the left side and the right side with respect to the center line CL.
- the position of the staircase 17 and the passage 18 that is farthest from the turning center CP is the left rear end 18S of the passage 18, but is not limited thereto.
- the position farthest from the turning center CP among the stairs 17 and the passage 18 may be in the stairs 17.
- the position farthest from the turning center CP in the passage 18 may be the front end or the side end of the passage 18.
- the “machine room” is configured by the engine room 13 and the equipment room 14, but is not limited thereto.
- the “machine room” may be a structure disposed in front of the counterweight 12 and may include a structure other than the engine room 13 and the equipment room 14.
- the first and second antenna support portions 19a and 20a are connected to the pair of handrails 19 and 20.
- the present invention is not limited to this.
- the first and second antenna support portions 19a and 20a may be directly connected to the equipment room 14 or the like.
- the first and second antenna support portions 19a and 20a are positioned behind the first and second handrails 19 and 20, but the present invention is not limited to this.
- the first and second antenna support portions 19a and 20a may be located in front of or on the side of the first and second handrails 19 and 20.
- the first and second antenna support portions 19a and 20a have been described as different configurations from the first and second handrails 19 and 20, but the first and second antenna support portions 19a. , 20a may be part of the first and second handrails 19, 20.
- the hydraulic excavator according to the present invention is useful in the field of hydraulic excavators because it can improve the measurement accuracy of position coordinates.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Component Parts Of Construction Machinery (AREA)
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Abstract
Description
しかしながら、カウンタウェイト上に一対のアンテナを設置すると、上部旋回体の旋回中心から大きく離間しているため、アンテナは旋回の停止・開始に伴って大きな加速度を受ける。そのため、アンテナが故障する可能性が高まる。
(課題を解決するための手段)
本発明の第1の態様に係る油圧ショベルは、下部走行体と、上部旋回体と、カウンタウェイトと、機械室と、キャブと、通路と、階段と、一対のアンテナを支持するための一対のアンテナ支持部と、を備える。上部旋回体は、下部走行体上に旋回可能に取付けられる。カウンタウェイトは、上部旋回体上に配置される。機械室は、上部旋回体上においてカウンタウェイトの前方に配置される。キャブは、上部旋回体上において機械室の前方に配置される。通路は、機械室上に形成される。階段は、機械室に接続され、通路に連なる。一対のアンテナ支持部は、上面視において、上部旋回体の旋回中心から車幅の1/4以上離れ、かつ、通路及び階段のうち旋回中心から最も離れた位置よりも旋回中心に近い。
(発明の効果)
本発明によれば、位置座標の測定精度を向上可能な油圧ショベルを提供することができる。
実施形態に係る油圧ショベル100の構成について、図面を参照しながら説明する。図1は、油圧ショベル100の前方斜視図である。図2は、油圧ショベル100の後方斜視図である。
次に、第1及び第2アンテナ支持部19a,20aの配置について、図面を参照しながら説明する。図3は、機器室14の上面図である。図4は、第1及び第2アンテナ支持部19a,20aの配置領域200(図4の網掛け部分)を示す上面図である。
同様に、第2アンテナ支持部20aと旋回中心CPとの第4間隔L4は、次の式(2)によって規定される。
ただし、油圧ショベル100の車幅Wは、機種や機能によって適宜設定されるものであり、例えば2m~10m程度であるものと想定されている。
次に、第1及び第2アンテナ支持部19a,20aの構成について、図面を参照しながら説明する。ただし、第1及び第2アンテナ支持部19a,20aは同様の構成を有するため、以下においては、第2アンテナ支持部20aの構成について説明する。
(1)本実施形態において、第1及び第2アンテナ支持部19a,20a(一対のアンテナ支持部の一例)は、上面視において、旋回中心CPから車幅Wの1/4以上離れ、かつ、通路18の左後端18Sよりも旋回中心CPに近い。通路18の左後端18Sは、階段17及び通路18のうち旋回中心CPから最も離れた位置である。
(その他の実施形態)
本発明は上記の実施形態によって記載したが、この開示の一部をなす論述及び図面はこの発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなろう。
11 上部旋回体
12 カウンタウェイト
13 エンジン室
14 機器室
15 作業機
16 キャブ
17 階段
18 通路
19 第1手摺り
20 第2手摺り
21 第3手摺り
22 第1GNSSアンテナ
23 第2GNSSアンテナ
100 油圧ショベル
Claims (7)
- 下部走行体と、
前記下部走行体上に旋回可能に取付けられる上部旋回体と、
前記上部旋回体上に配置されるカウンタウェイトと、
前記上部旋回体上において前記カウンタウェイトの前方に配置される機械室と、
前記上部旋回体上において前記機械室の前方に配置されるキャブと、
前記機械室上に形成される通路と、
前記機械室に接続され、前記通路に連なる階段と、
一対のアンテナを支持するための一対のアンテナ支持部と、
を備え、
前記一対のアンテナ支持部は、上面視において、前記上部旋回体の旋回中心から車幅の1/4以上離れ、かつ、前記通路及び前記階段のうち前記旋回中心から最も離れた位置よりも前記旋回中心に近い、
油圧ショベル。 - 前記一対のアンテナ支持部は、上面視において、前記機械室、前記キャブ又は前記階段上に位置する、
請求項1に記載の油圧ショベル。 - 前記機械室上に配置される一対の手摺りを備え、
前記一対のアンテナ支持部は、前記一対の手摺りに接続される、
請求項1又は2に記載の油圧ショベル。 - 前記機械室上に配置される一対の手摺りを備え、
前記一対のアンテナ支持部は、前記一対の手摺りの一部である、
請求項1又は2に記載の油圧ショベル - 前記一対のアンテナ支持部は、上面視において、前記一対の手摺りを基準として前記通路の反対側に位置している、
請求項3に記載の油圧ショベル。 - 前記一対のアンテナ支持部に着脱可能に取り付けられた一対のアンテナを備える請求項1乃至5のいずれかに記載の油圧ショベル。
- 前記機械室は、前記カウンタウェイトの前方に配置されるエンジン室と、前記エンジン室の前方に配置される機器室と、を有し、
前記通路は、前記機器室上に形成され、
前記階段は、前記機器室の前方に配置されている、
請求項1乃至6のいずれかに記載の油圧ショベル。
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US13/990,897 US8820457B2 (en) | 2012-11-13 | 2012-11-13 | Hydraulic excavator |
PCT/JP2012/079382 WO2014076761A1 (ja) | 2012-11-13 | 2012-11-13 | 油圧ショベル |
JP2013510822A JP5296945B1 (ja) | 2012-11-13 | 2012-11-13 | 油圧ショベル |
DE112012000316.0T DE112012000316B3 (de) | 2012-11-13 | 2012-11-13 | Hydraulikbagger |
CN201280004286.XA CN103748289B (zh) | 2012-11-13 | 2012-11-13 | 液压挖掘机 |
KR1020147035592A KR101540349B1 (ko) | 2012-11-13 | 2012-11-13 | 유압 셔블 |
IN9741DEN2014 IN2014DN09741A (ja) | 2012-11-13 | 2014-11-18 |
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- 2012-11-13 KR KR1020147035592A patent/KR101540349B1/ko active IP Right Grant
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CN103748289A (zh) | 2014-04-23 |
KR101540349B1 (ko) | 2015-07-29 |
CN103748289B (zh) | 2015-06-17 |
IN2014DN09741A (ja) | 2015-07-31 |
US20140133949A1 (en) | 2014-05-15 |
DE112012000316B3 (de) | 2014-10-09 |
JPWO2014076761A1 (ja) | 2016-09-08 |
KR20150021946A (ko) | 2015-03-03 |
US8820457B2 (en) | 2014-09-02 |
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