WO2013094277A1 - 建設機械のパイロットバルブ取り付け構造 - Google Patents
建設機械のパイロットバルブ取り付け構造 Download PDFInfo
- Publication number
- WO2013094277A1 WO2013094277A1 PCT/JP2012/075514 JP2012075514W WO2013094277A1 WO 2013094277 A1 WO2013094277 A1 WO 2013094277A1 JP 2012075514 W JP2012075514 W JP 2012075514W WO 2013094277 A1 WO2013094277 A1 WO 2013094277A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pilot valve
- casing
- construction machine
- mat
- floor plate
- Prior art date
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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
- E02F9/16—Cabins, platforms, or the like, for drivers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
- E02F3/325—Backhoes of the miniature type
-
- 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
-
- 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
- E02F9/0875—Arrangement of valve arrangements on 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
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
Definitions
- the present invention relates to a pilot valve mounting structure for a construction machine, which is provided in a construction machine such as a mini excavator and which is mounted on a floor plate with a pilot valve included in a traveling operation device disposed in front of a driver's seat.
- Patent Document 1 There is one disclosed in Patent Document 1 as this type of prior art.
- This prior art has a configuration in which a pilot valve included in a traveling operation device provided in a hydraulic excavator having a traveling body, a revolving body, and a working device is attached to a flat driver seat floor, that is, a floor plate. is there.
- the above-described prior art has a configuration in which a pilot valve is attached to a flat floor plate, the height dimension of the portion of the pilot valve protruding upward from the floor plate is increased.
- the operation space of the traveling operation device formed on the front side of the driver's seat tends to be narrowed, and it is easy to give a feeling of pressure to the operator sitting in the driver's seat.
- This is particularly remarkable in a mini excavator or the like in which the construction machine provided with the pilot valve is a small machine and the manufacturing of the machine is easily restricted by the size of the operation space of the traveling operation device.
- the present invention has been made from the above-described prior art, and an object thereof is to provide a construction machine pilot valve mounting structure capable of reducing the feeling of pressure on an operator sitting in a driver's seat.
- the present invention includes a traveling body, a revolving body disposed on the traveling body, and a work device attached to the revolving body, and a floor formed on the revolving body.
- a construction machine having a driver's seat on a plate and having a traveling operation device including a pilot valve at a position in front of the driver's seat is attached to the floor plate with the pilot valve included in the traveling operation device.
- the floor plate is formed with a recess having a bottom hole into which a casing forming the outer shell of the pilot valve can be inserted, and the pilot valve is formed in the hole of the recess.
- the casing of the pilot valve is attached to the bottom of the recess, and It is characterized by having a mat-like seal member for sealing a gap formed around the casing in the said hole parts were inserted to the casing of the pilot valve.
- the pilot valve casing since the pilot valve casing is attached to the bottom of the concave portion of the floor plate, the pilot valve casing is arranged so that the upper surface of the pilot valve protruding from the upper surface of the floor plate is lowered. Can be attached to the floor plate.
- the recess is formed in the floor plate in this way, there is a concern that contaminants such as mud and muddy water may enter the pilot valve through the recess.
- the mat-like sealing member that seals the gaps formed around the perimeter can prevent contaminants such as mud and muddy water from entering the pilot valve.
- the present invention is characterized in that, in the above-mentioned invention, the mat-like sealing member is made of a rubber member.
- the present invention configured as described above can be easily attached to and detached from the concave portion of the floor plate by utilizing the elasticity of the mat-shaped seal member so as to bend the mat-shaped seal member.
- the present invention is also characterized in that, in the above invention, the mat-like seal member is composed of a first divided member and a second divided member which are formed so as to be separated from each other and sandwich the casing of the pilot valve. Yes.
- the mat-shaped seal member is divided into the first divided member and the second divided member and separated from each other, so that the work of arranging the mat-shaped seal member around the pilot valve is easy. Can be done.
- the present invention is characterized in that, in the above invention, the mat-shaped sealing member has a protrusion at a lower portion and a hole into which the protrusion is fitted at the bottom of the recess.
- the mat-shaped seal member can be easily positioned in the recess by fitting the protrusion of the mat-shaped seal member into the hole in the bottom of the recess of the floor plate.
- the mat-like seal member attached to the concave portion of the plate can be kept stable without being displaced with respect to the concave portion.
- the mat-shaped sealing member according to the above-described invention, the upper surface of the mat-shaped sealing member is substantially flush with the upper surface of the floor plate, and is higher than the upper surface of the floor plate. It is characterized by being attached to the recess.
- the mat-like sealing member is attached to the recess so as to be substantially flush with the floor plate and higher than the upper surface of the floor plate. It is difficult to flow in, and it is possible to reliably prevent this contaminant from entering the pilot valve.
- the portion of the pilot valve protruding from the floor plate can be made lower than before, and it is easy for the operator sitting in the driver's seat to receive it conventionally. It is possible to reduce a feeling of pressure generated in a limited operation space. As a result, more comfortable operability than conventional can be ensured. Further, the present invention can prevent intrusion of contaminants such as mud and muddy water into the pilot valve by the mat-like sealing member that seals the gap around the pilot valve, maintaining good performance of the pilot valve, In addition, ensuring of excellent durability can also be realized.
- FIG. 3 is an enlarged perspective view of a main part of the state shown in FIG. It is the perspective view which looked at the location shown in FIG. 3 from another angle. It is a figure explaining the relationship between depression operation of an operation pedal, and the height of the casing of a pilot valve.
- FIG. 1 It is a figure which shows the mat-shaped sealing member with which this embodiment is equipped, (a) A figure is the perspective view seen from the front side, (b) The figure is a perspective view seen from the back side. It is a figure which shows the mounting relationship of the mat-shaped sealing member and floor plate with which this embodiment is equipped, (a) A figure is a perspective view which shows the state before mounting
- FIG. 10 is an enlarged cross-sectional view of FIG. 9A.
- FIG. 10 is an enlarged view of a B cross section of FIG.
- FIG. 11 is a cross-sectional side view of a main part in which the mat-like seal member according to the present embodiment is mounted in the state shown in FIG.
- the construction machine provided with the pilot valve mounting structure according to the present invention is, for example, a mini excavator that constitutes a small machine and has a relatively narrow operation space of an operation device arranged in a driver's cab.
- this mini excavator includes a traveling body 1, a revolving body 2 disposed on the traveling body 1, and a work device 3 that is attached to the revolving body 2 and is rotatable in the vertical direction. And have.
- the work device 3 includes a boom 4 attached to the revolving structure 2, an arm 5 attached to the tip of the boom 4, and a bucket 6 attached to the tip of the arm 5.
- a cab 7 and a counterweight 8 for ensuring a weight balance are arranged on the revolving structure 2.
- a machine room 9 in which an engine, a hydraulic pump and the like are accommodated is disposed between the cab 7 and the counterweight 8.
- a driver's seat 10 on which an operator is seated is disposed in the driver's cab 7, and a traveling operation lever 16, an operation pedal 17, and a pilot valve 18 are provided at a position in front of the driver's seat 10 as shown in FIG. 2.
- a traveling operation device 11 is disposed.
- Work operation devices 10 a and 10 b are arranged on both sides of the driver's seat 10.
- a hole 20b into which a casing 18a that forms an outer shell of the pilot valve 18 can be inserted is formed in the floor plate 15 of the cab 7.
- a recess 20 is formed in 20a.
- the casing 18 a of the pilot valve 18 is attached to the bottom 20 a of the recess 20 with the casing 18 a of the pilot valve 18 inserted into the hole 20 b of the recess 20.
- a mat-like sealing member 21 for sealing a gap generated around the casing 18a when the casing 18a of the pilot valve 18 is inserted into the hole 20b of the recess 20. It has.
- the mat-like seal member 21 is made of, for example, a rubber member.
- the mat-shaped sealing member 21 includes a first divided member 21a and a second divided member 21b which are formed so as to be separated from each other and sandwich the casing 18a of the pilot valve 18. It is made up.
- the mat-shaped sealing member 21 has a protruding portion 22 in the lower portion, and a hole portion into which the protruding portion 22 is fitted into the bottom portion 20 a of the recessed portion 20. 23. Further, as shown in FIG. 5, the mat-shaped sealing member 21 is formed so that the upper surface thereof is substantially flush with the upper surface of the floor plate 15 and is higher than the upper surface of the floor plate 15. It is attached to the recess 20.
- the height of the pilot valve 18 attached to the recess 20 of the floor plate 15 is such that the height position from the floor plate 15 to the upper surface of the casing 18a of the pilot valve 18 is on the driver's seat 10.
- the shoe 30a of the operator's shoe 30 is set at a relatively low height position H within a range where the shoe 30a does not contact the floor plate 15. This height position H is, for example, around 20 mm.
- the operator sitting in the driver's seat 10 operates the operation devices 10a and 10b for work shown in FIG.
- the pilot valve 18 is activated and the travel direction control valve (not shown) is illustrated. Is switched, and the pressure oil from the hydraulic pump accommodated in the machine room 9 is supplied to the left and right traveling motors via the traveling direction control valve so that the traveling body 1 can travel.
- the casing 18a of the pilot valve 18 is mounted on the bottom 20a of the recess 20 of the floor plate 15, the pilot protruding from the upper surface of the floor plate 15 is provided.
- the casing 18a of the pilot valve 18 can be attached to the floor plate 15 so that the upper surface of the valve 18 is lowered. As a result, it is possible to reduce a feeling of pressure generated in a limited narrow operation space that is easily received by an operator sitting in the driver's seat 10 and to ensure comfortable operability.
- the recess 20 is formed in the floor plate 15, dirt such as mud adhering to an operator's shoes or mud water generated when the mud is washed out enters the pilot valve 18 through the recess 20.
- the mat-like seal member 21 that seals the gap formed around the casing 18a of the pilot valve 18 prevents the entry of contaminants such as mud and muddy water into the pilot valve 18. can do.
- the mat-like seal member 21 is made of a rubber member, the mat-like seal member 21 is bent by using the elasticity of the mat-like seal member 21 so as to be recessed. 20 can be easily attached and detached.
- the mat-like seal member 21 is divided into the first divided member 21a and the second divided member 21b and separated from each other, so that the mat-like seal member 21 is placed around the casing 18a of the pilot valve 18.
- positioning work can be performed easily.
- the mat-like seal member 21 can be easily positioned in the recess 20 by fitting the protrusion 22 of the mat-like seal member 21 into the hole 23 of the floor plate 15, and the floor plate The mat-like seal member 21 attached to the 15 recesses 20 can be kept stable without being displaced with respect to the recesses 20.
- the mat-like sealing member 21 is formed in the recess 20 so that the upper surface thereof is substantially flush with the upper surface of the floor plate 15 and is higher than the upper surface of the floor plate 15. Since the attachment is made, contaminants such as mud and muddy water do not easily flow into the recess 20, and entry of the contaminants into the pilot valve 18 can be reliably prevented.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Description
2 旋回体
3 作業装置
10 運転席
11 走行用操作装置
15 フロアプレート
18 パイロットバルブ
18a ケーシング
20 凹部
20a 底部
20b 穴
21 マット状シール部材
21a 第1分割部材
21b 第2分割部材
21c 穴
22 突起部
23 穴部
Claims (5)
- 走行体と、この走行体の上に配置される旋回体と、この旋回体に取り付けられる作業装置とを有し、上記旋回体に形成されるフロアプレート上に運転席を有し、上記運転席の前方位置にパイロットバルブを含む走行用操作装置を有する建設機械に備えられ、
上記走行用操作装置に含まれるパイロットバルブを上記フロアプレートに取り付けるようにした建設機械のパイロットバルブ取り付け構造において、
上記フロアプレートに、上記パイロットバルブの外殻を形成するケーシングの挿入が可能な穴を底部に有する凹部を形成し、
上記凹部の上記穴に上記パイロットバルブの上記ケーシングを挿入させた状態で、上記凹部の底部に上記パイロットバルブの上記ケーシングを取り付けるとともに、
上記凹部の上記穴に上記パイロットバルブの上記ケーシングを挿入させた際に上記ケーシングの周囲に生じる隙間をシールするマット状シール部材を備えたことを特徴とする建設機械のパイロットバルブ取り付け構造。 - 請求項1に記載の建設機械のパイロットバルブ取り付け構造において、
上記マット状シール部材は、ゴム製の部材から成ることを特徴とする建設機械のパイロットバルブ取り付け構造。 - 請求項2に記載の建設機械のパイロットバルブ取り付け構造において、
上記マット状シール部材は、互いに分割形成されて上記パイロットバルブの上記ケーシングを挟むように配置される第1分割部材と第2分割部材とから成ることを特徴とする建設機械のパイロットバルブ取り付け構造。 - 請求項3に記載の建設機械のパイロットバルブ取り付け構造において、
上記マット状シール部材の下側部分に突起部を有し、上記凹部の上記底部に上記突起部が嵌入される穴部を有することを特徴とする建設機械のパイロットバルブ取り付け構造。 - 請求項4に記載の建設機械のパイロットバルブ取り付け構造において、
上記マット状シール部材を、その上面が、上記フロアプレートの上面と略同一面を形成するように、且つ、上記フロアプレートの上面以上の高さとなるように、上記凹部に取り付けたことを特徴とする建設機械のパイロットバルブ取り付け構造。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280062827.4A CN104011299A (zh) | 2011-12-21 | 2012-10-02 | 施工机械的先导阀安装结构 |
EP12860616.7A EP2796622A1 (en) | 2011-12-21 | 2012-10-02 | Pilot valve attachment structure of construction machine |
KR1020147018888A KR20140113670A (ko) | 2011-12-21 | 2012-10-02 | 건설 기계의 파일럿 밸브 장착 구조 |
US14/360,950 US20140306488A1 (en) | 2011-12-21 | 2012-10-02 | Pilot Valve Attachment Structure of Construction Machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011280019A JP2013129996A (ja) | 2011-12-21 | 2011-12-21 | 建設機械のパイロットバルブ取り付け構造 |
JP2011-280019 | 2011-12-21 |
Publications (1)
Publication Number | Publication Date |
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WO2013094277A1 true WO2013094277A1 (ja) | 2013-06-27 |
Family
ID=48668183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/075514 WO2013094277A1 (ja) | 2011-12-21 | 2012-10-02 | 建設機械のパイロットバルブ取り付け構造 |
Country Status (6)
Country | Link |
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US (1) | US20140306488A1 (ja) |
EP (1) | EP2796622A1 (ja) |
JP (1) | JP2013129996A (ja) |
KR (1) | KR20140113670A (ja) |
CN (1) | CN104011299A (ja) |
WO (1) | WO2013094277A1 (ja) |
Families Citing this family (2)
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JP6317706B2 (ja) * | 2015-06-02 | 2018-04-25 | 株式会社日立建機ティエラ | 作業機械 |
JP6511419B2 (ja) * | 2016-09-01 | 2019-05-15 | 株式会社日立建機ティエラ | 小型油圧ショベル |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007050720A (ja) * | 2005-08-15 | 2007-03-01 | Hitachi Constr Mach Co Ltd | 建設機械 |
JP2011064064A (ja) | 2010-10-27 | 2011-03-31 | Kobelco Contstruction Machinery Ltd | 建設機械のバルブ操作装置 |
JP2011106222A (ja) * | 2009-11-20 | 2011-06-02 | Hitachi Constr Mach Co Ltd | 建設機械 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US5251534A (en) * | 1992-04-29 | 1993-10-12 | Kayaba Industry Co. Ltd. | Input apparatus |
JP3146152B2 (ja) * | 1996-04-05 | 2001-03-12 | 株式会社クボタ | バックホウ |
JP5180248B2 (ja) * | 2010-03-09 | 2013-04-10 | 株式会社神戸製鋼所 | 油圧配管の支持構造及びこれを備えた作業機械 |
EP2558652B1 (en) * | 2010-04-12 | 2019-10-23 | Volvo Compact Equipment SAS | Excavator and process for assembling or dissassembling such excavator |
JP5341264B2 (ja) * | 2010-11-29 | 2013-11-13 | 日立建機株式会社 | 建設機械 |
CN103347722B (zh) * | 2011-02-07 | 2015-09-02 | 日立建机株式会社 | 工程机械 |
JP5793193B2 (ja) * | 2011-08-09 | 2015-10-14 | 日立建機株式会社 | 建設機械 |
CN103764921B (zh) * | 2011-09-09 | 2015-12-23 | 日立建机株式会社 | 工程机械 |
CN103764920B (zh) * | 2011-10-05 | 2016-02-24 | 日立建机株式会社 | 工程机械 |
-
2011
- 2011-12-21 JP JP2011280019A patent/JP2013129996A/ja active Pending
-
2012
- 2012-10-02 US US14/360,950 patent/US20140306488A1/en not_active Abandoned
- 2012-10-02 CN CN201280062827.4A patent/CN104011299A/zh active Pending
- 2012-10-02 WO PCT/JP2012/075514 patent/WO2013094277A1/ja active Application Filing
- 2012-10-02 KR KR1020147018888A patent/KR20140113670A/ko not_active Application Discontinuation
- 2012-10-02 EP EP12860616.7A patent/EP2796622A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007050720A (ja) * | 2005-08-15 | 2007-03-01 | Hitachi Constr Mach Co Ltd | 建設機械 |
JP2011106222A (ja) * | 2009-11-20 | 2011-06-02 | Hitachi Constr Mach Co Ltd | 建設機械 |
JP2011064064A (ja) | 2010-10-27 | 2011-03-31 | Kobelco Contstruction Machinery Ltd | 建設機械のバルブ操作装置 |
Also Published As
Publication number | Publication date |
---|---|
CN104011299A (zh) | 2014-08-27 |
US20140306488A1 (en) | 2014-10-16 |
JP2013129996A (ja) | 2013-07-04 |
EP2796622A1 (en) | 2014-10-29 |
KR20140113670A (ko) | 2014-09-24 |
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