WO2007105325A1 - 掘削作業機のアーム - Google Patents
掘削作業機のアーム Download PDFInfo
- Publication number
- WO2007105325A1 WO2007105325A1 PCT/JP2006/316717 JP2006316717W WO2007105325A1 WO 2007105325 A1 WO2007105325 A1 WO 2007105325A1 JP 2006316717 W JP2006316717 W JP 2006316717W WO 2007105325 A1 WO2007105325 A1 WO 2007105325A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arm
- fulcrum
- boom
- general
- fulcrum part
- Prior art date
Links
Classifications
-
- 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
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
Definitions
- the present invention relates to a construction technique of an arm constituting a work machine in an excavation work machine represented by a power shovel.
- the excavator is an excavator that is well known as a hydraulic excavator excavator.
- the basic structure of a power shovel is based on a self-propelled undercarriage and an upper revolving body that can rotate 360 degrees on it.
- the upper swing body is provided with a boom and an arm, and an attachment such as a packet is attached thereto.
- the boom, arm, and packet are collectively referred to as a working unit, and the boom and arm are referred to as a front.
- the arm is a cylindrical structure having three fulcrum parts, an arm fulcrum part, a packet fulcrum part, and a bucket cylinder bottom fulcrum part.
- the arm has a role of “arm” that connects the boom and the packet in the work machine.
- the arm is provided with a bucket cylinder for operating the packet on the upper side.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-211505
- the problem to be solved is to reduce the manufacturing cost and manufacturing man-hour of the arm that constitutes the work machine of the excavator.
- the arm in the arm of the working machine attached to the upper revolving unit supported so as to be able to turn left and right at the upper center of the crawler type traveling device, the arm is formed as a part that is forged by integral molding.
- An arm fulcrum part, a packet fulcrum part, and a bucket cylinder one bottom fulcrum part, and the arm fulcrum part and the packet fulcrum part are connected by a general-purpose square pipe, and an upper surface of the general-purpose square pipe
- the bucket cylinder is composed of a general-purpose square tube having a bottom fulcrum portion fixed thereto.
- the arm fulcrum part, the packet fulcrum part, and the bucket cylinder bottom fulcrum part are common parts, and the length of the general-purpose square tube is changed. This constitutes different arms.
- the straight portion other than the integrally formed forged portion that is, the portion capable of simplifying the shape
- the straight portion other than the integrally formed forged portion can be manufactured only by cutting the general-purpose square tube by a necessary length. That is, the number of parts of the arm can be reduced.
- the cost of parts can be reduced by adopting a general-purpose square tube and reducing the number of parts.
- the number of manufacturing steps can be reduced because the number of welding points is reduced by using a general-purpose square tube.
- the arm fulcrum part, the packet fulcrum part, and the bucket cylinder one bottom fulcrum part, which are integrally formed forged parts, are common parts, and the length of the general-purpose square tube It is possible to easily and inexpensively produce multiple arms with a length corresponding to the excavating work machine to be installed. That is, the general-purpose arm of the excavator can be improved.
- FIG. 1 is a perspective view showing an overall configuration of a power shovel according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing the configuration of the work machine.
- FIG. 3 is a perspective view showing the configuration of the boom and a cross-sectional view of a straight portion.
- FIG. 4 is a perspective view showing the configuration of the arm and a cross-sectional view of the straight portion.
- FIG. 5 is a perspective view showing a standard boom and a long front boom.
- FIG. 6 is a perspective view showing a standard arm and a long front arm.
- FIG. 1 is a perspective view showing the overall configuration of a power shovel according to an embodiment of the present invention
- FIG. 2 is a perspective view showing the configuration of a work machine
- FIG. 3 is a perspective view showing the configuration of a boom. It is sectional drawing of a straight part.
- Fig. 4 is a perspective view showing the structure of the arm and a cross-sectional view of the straight part
- Fig. 5 is a perspective view showing a standard boom and a long front boom
- Fig. 6 is a standard arm and a long front arm.
- a power shovel 50 well known as an excavating work machine is an embodiment of the present invention.
- the excavator 50 is an excavator for excavating soil and rocks as an excavator.
- This excavator 50 is an excavator of a hydraulic excavator that is frequently used, and can perform loading work mainly for excavation work of earth and sand.
- the excavator 50 is roughly composed of a crawler type traveling device 40 and the cross section.
- the upper rotating body 30 is supported at the center of the upper portion of the single-type traveling device 40 so as to be able to turn left and right, and the work machine 10 is mounted at the front left and right center of the upper rotating body 30.
- a blade 41 is disposed on one side of the crawler traveling device 40 in the front and rear direction so as to be rotatable up and down.
- the crawler type traveling device 40 can also use a variable gauge crawler, and stability can be secured by widening the crawler interval during work.
- An engine (not shown) is mounted on the rear upper part of the body frame 31 of the upper revolving body 30.
- the rear part of the engine is covered with a bonnet and a body frame 31 (not shown), and both sides are covered with covers 32 and 32.
- a driver's seat 33 is disposed between the covers 32 and 32 and above the engine.
- An operation lever, a hook lever, and the like are arranged in front of the driver's seat 33 or in the vicinity of the side portion, and a pedal is arranged on the step 34 in front of the driver's seat 33 to constitute the driving operation unit 35.
- a canopy 36 is provided above the driving operation unit 35 or a cabin is provided around it.
- the work machine 10 is roughly composed of a boom 15, an arm 20, and a packet 25.
- a boom bracket 37 is attached to the center of the front end of the body frame 31 so as to be able to turn left and right (see FIG. 1), and is turned left and right by a swing cylinder (not shown).
- a boom fulcrum part 16 provided at the lower part of the boom 15 is supported so as to be rotatable up and down (front and rear).
- the boom cylinder 17 is interposed between the front part of the boom bracket 37 and the front part of the boom cylinder rod fulcrum part 18 in the middle part of the boom 15.
- an arm cylinder 23 is interposed between a boom cylinder rod fulcrum 18 in the middle of the boom 15 and an arm fulcrum 21 provided at the rear end of the arm 20.
- a bucket cylinder 26 is interposed between the bucket cylinder one bottom fulcrum 22 and the bucket 25 at the rear of the arm 20.
- the work machine 10 is configured such that the boom 15 can be rotated by the expansion and contraction drive of the boom cylinder 17, the arm 20 can be rotated by the expansion and contraction drive of the arm cylinder 23, and the bucket 25 is the same as the bucket cylinder. It can be rotated by 26 telescopic drives.
- These hydraulic actuators such as cylinders 17, 23, and 26 and the turning motor that turns the upper turning body are controlled by turning operations such as operating levers and pedals installed in the operation section 13 (see Fig. 1). By switching a valve (not shown), pressure oil is supplied from a hydraulic pump (not shown) through a hydraulic hose and driven.
- the boom 15 is bent forward in the middle and formed in a substantially “ ⁇ ” shape in side view.
- FIG. 3 shows each part separated.
- Boom 15 consists of boom fulcrum part 16, arm cylinder rod fulcrum part 18, arm fulcrum part 19, first straight part (first general-purpose square tube) 61 and second straight part (second general-purpose square tube) 62.
- the first straight part 61 is arranged between the boom fulcrum part 16 and the arm cylinder rod fulcrum part 18, and the second straight part 62 is arranged between the arm cylinder rod fulcrum part 18 and the arm fulcrum part 19, respectively. It is fixed by welding.
- the boom fulcrum part 16, the arm cylinder rod fulcrum part 18 and the arm fulcrum part 19 are forged parts by integral molding.
- the straight portions 61 and 62 use a metal general-purpose square pipe whose vertical and horizontal lengths are set to predetermined lengths (standardized).
- the first straight part 61 and the second straight part 62 use the same general-purpose square pipe. That is, as shown in FIG. 3, the first straight portion 61 and the second straight portion 62 are different in length, and the AA 'cross section of the first straight portion 61 and the cross sectional shape of the second straight portion 61 are the same. It is said.
- the cross-sectional shape of the second straight portion 62 can be made smaller than the cross-sectional shape of the first straight portion 61 to achieve a slight weight reduction.
- the boom fulcrum portion 16 has a shaft hole 16a opened in the left-right direction on the base side, and is pivotally supported on the upper part of the boom bracket 37 by a pivot shaft.
- the other end side (upper part) of the boom fulcrum part 16 is opened in a quadrilateral shape that matches the cross-sectional shape of the first straight part 61, and an edge is formed on the outer periphery of the opening part 16b. So that it can be fitted.
- the arm cylinder rod fulcrum part 18 is formed of a square pipe-like part bent in the shape of a substantially " ⁇ " in the side view, and the opening 18a at one end (lower part) is a cross-sectional shape of the first straight part 61
- the opening is formed in a quadrangular shape, and an edge is formed on the outer periphery of the opening 18a so that the other end of the first straight portion 61 can be fitted.
- the opening 18b at the end (upper part) opens in a square shape that matches the cross-sectional shape of the second straight part 62, and an edge is formed on the outer periphery of the opening 18b to fit one end of the second straight part 62 It can be configured as possible.
- a shaft hole 18c is opened in the left-right direction in the upper and lower halfway portion on the front side of the arm cylinder rod fulcrum portion 18 so that the tip of the piston rod of the boom cylinder 17 can be pivotally supported by the pivot shaft.
- Support projections 18d '18d are formed in the middle of the rear surface side of the arm cylinder rod fulcrum 18 and shaft holes are formed in the support projections 18d' 18d in the left-right direction, and the bottom side of the arm cylinder 23 is pivoted.
- the structure is supported by a support shaft.
- the arm fulcrum portion 19 has a rectangular opening 19a that matches the cross-sectional shape of the second straight portion 62 on the base side, and an edge is formed on the outer periphery of the opening 19a.
- the other end (upper part) of 2 can be fitted.
- the other end (tip) of the arm fulcrum part 19 forms a bifurcated projecting part 19b 19b.
- a shaft hole is opened in each of the projecting parts 19b 19b in the left-right direction. It is configured to pivot.
- the boom In order to maintain the balance during the operation of the excavating machine and to withstand the load during the excavating operation, the boom is required to be strong and light. Conventionally, a boom in which left and right side plates are joined to an upper plate and a lower plate by welding and the cross section is square has been most commonly used.
- the number of parts (types of parts) of the boom 15 can be reduced.
- the price of general-purpose square pipes is low.
- the cost of parts for the boom 15 can be reduced by reducing the number of parts and adopting general-purpose square pipes.
- the general-purpose square pipe can be cut only by the required length, and there is no welding work for forming a cross-section as in the conventional case, so that the number of manufacturing steps can be reduced. In this way, manufacturing costs can be reduced by reducing component costs and manufacturing man-hours.
- the arm 20 is roughly configured to have fulcrum portions before and after the straight portion 28.
- Fig. 4 shows the parts separated so that the structure of the arm 20 is easy to move.
- the arm 20 has a straight portion 28, an arm fulcrum portion 21 and a packet fulcrum portion 24 which are arranged on both sides and fixed by welding or the like, a bucket cylinder one bottom fulcrum portion 22 provided on the straight portion 28, an arm An arm reinforcement 27 isotropic force connecting the fulcrum part 21 and the bucket cylinder one bottom fulcrum part 22 is also configured.
- the arm fulcrum part 21, the bucket cylinder bottom fulcrum part 22 and the packet fulcrum part 24 are forged parts by integral molding.
- the straight portion 28 uses a general-purpose square pipe.
- FIG. 4 shows a cross-sectional view of the CC ′ cross section of the straight portion 28.
- the arm reinforcement 27 is manufactured by bending a sheet metal or the like.
- the arm fulcrum portion 21 has a shaft hole 21a opened in the left-right direction on the base side, and the tip of the piston rod of the arm cylinder 23 can be pivotally supported by the pivot shaft, and a shaft hole 21b opened in the left-right direction in the middle portion. It is configured so that it can be pivotally supported on the upper part of the boom 15 by a mouth pivot.
- the other end (tip) of the arm fulcrum part 21 opens in a square shape that matches the cross-sectional shape of the straight part 28, and an edge is formed on the outer periphery of the opening part 21c to fit one end of the straight part 28 So that you can
- the packet fulcrum portion 24 has a rectangular opening portion 24a that matches the cross-sectional shape of the straight portion 28 on the base side, and an edge portion is formed on the outer periphery of the opening portion 24a. (Tip) can be fitted.
- the other end (tip) of the packet fulcrum 24 has a shaft hole 24b opened in the left-right direction, and the pivot side can pivotally support the base side of the packet 25.
- the middle hole has a shaft hole 24c opened in the left-right direction.
- One end of the connecting link 39 connected to the tip of the piston rod of the cylinder 26 can be pivotally supported.
- the outer periphery on the opening side of the fulcrum portion and the outer periphery of the straight portion the same shape, it is possible to join without a step and to improve the appearance.
- Bucket cylinder one bottom fulcrum portion 22 is formed in an inverted U shape when viewed from the front, and is fixed to the upper surface of the rear portion of straight portion 28 by welding or the like.
- a shaft hole is opened in the upper part on the open side so that the base side of the bucket cylinder 26 can be pivotally supported by a pivot shaft. So Then, the upper force arm reinforcement 27 between the upper portion of the bucket cylinder one bottom fulcrum portion 22 and the arm fulcrum portion 21 is connected and fixed by welding or the like.
- the arm In order to maintain a balance during the operation of the excavating machine and to withstand the load during the excavating operation, the arm is required to have strength and light weight.
- an arm having left and right side plates joined to an upper plate and a lower plate by welding and having a square cross section has been most commonly used.
- the number of parts of the arm 20 can be reduced.
- general-purpose square pipes are inexpensive.
- the parts cost of the arm 20 can be reduced by reducing the number of parts and adopting a general-purpose square pipe.
- the general-purpose square pipe is a process that only cuts the required length, and there is no welding work for forming a cross-section as in the conventional case, and the number of manufacturing steps can be reduced. In this way, manufacturing costs can be reduced by reducing component costs and manufacturing man-hours.
- the required strength was maintained by increasing the cross-sectional area on the boom side.
- the required strength is provided by the arm fulcrum 21, bucket cylinder bottom fulcrum 22 and arm reinforcement 27, which are forged parts. Obtainable.
- the same general-purpose square pipe used in the first straight portion 61 and the second straight portion 62 of the boom 15 can be used for the straight portion 28 of the arm 20. In this way, the same general-purpose square pipe is cut into the straight sections 28, 61, and 62 of the work machine 10 to the required length, so that the manufacturing cost can be further reduced.
- the excavator 50 may be provided with a boom 51 (long boom) having a longer overall length than the boom 15 (standard boom) described above. Since the boom and arm are referred to as the front, an excavating machine that is longer than the standard and includes the boom and arm is generally called a long front or a high lift front. The long front is used to widen the working radius or to dig deeper and deeper, and the high lift front is used to reach higher than normal positions.
- straight portions 61 and 62 of the standard boom 15 are made longer, and a boom fulcrum portion 16, an arm cylinder rod fulcrum portion 18 and an arm fulcrum portion similar to the standard boom 15. 19 makes the long boom 51 configurable.
- the length according to the excavator to be installed can produce multiple booms.
- the versatility of the boom in the same type of excavator can be improved and the manufacturing cost of the entire model can be reduced.
- first straight part 61 is extended, in order to use the same boom cylinder, it is necessary to provide a support part that supports the tip of the piston rod on the upper front surface of the first straight part 61.
- second straight part 62 In order to use the same arm cylinder when the second straight part 62 is extended, it is necessary to provide a support part on the bottom side at the rear upper part of the second straight part 62.
- the boom fulcrum part 16, the arm cylinder rod fulcrum part 18 and the arm fulcrum part 19 are the same, and one or both of the first straight part 61 and the second straight part 62 are provided.
- a boom with a different length in the longitudinal direction is attached to the boom bracket 37 so that the work can be performed. Therefore, the length corresponding to the excavator to be installed can be changed simply by changing the length of the general-purpose square pipe. Multiple booms can be produced. In other words, the versatility of the boom in the same type of excavator can be improved.
- the power shovel 50 may be provided with an arm 52 (long arm) having a longer overall length than the arm 20 (standard arm) described above.
- the straight part 29 of the standard arm 20 with the entire length of the straight part 28 made longer, the arm fulcrum part 21 similar to the standard arm 20, the bucket cylinder one bottom fulcrum part 22 and the long arm at the bucket fulcrum 52 Can be configured. It is preferable to change the length of arm reinforcement 27 as required.
- the production cost can be reduced by using general-purpose square pipes in the straight portions 28 ⁇ 61 ⁇ 62 of the boom 15 and the arm 20 in the excavator 50.
- the present invention is also applicable to other excavating machines having booms or arms that are not limited to the excavator 50.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
- Component Parts Of Construction Machinery (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/282,837 US20090129908A1 (en) | 2006-03-13 | 2006-08-25 | Arm for Excavation Machine |
EP06796790.1A EP2136003A4 (en) | 2006-03-13 | 2006-08-25 | ARM FOR EXTRACTING MACHINE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006067816A JP4296182B2 (ja) | 2006-03-13 | 2006-03-13 | 掘削作業機のアーム |
JP2006-067816 | 2006-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007105325A1 true WO2007105325A1 (ja) | 2007-09-20 |
Family
ID=38509172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/316717 WO2007105325A1 (ja) | 2006-03-13 | 2006-08-25 | 掘削作業機のアーム |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090129908A1 (ja) |
EP (1) | EP2136003A4 (ja) |
JP (1) | JP4296182B2 (ja) |
KR (1) | KR100965036B1 (ja) |
CN (1) | CN101426981A (ja) |
WO (1) | WO2007105325A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105598639A (zh) * | 2015-02-11 | 2016-05-25 | 吴新良 | 挖掘机斗齿的制造方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4566935B2 (ja) | 2006-03-13 | 2010-10-20 | ヤンマー株式会社 | 掘削作業機のブーム |
JP5395513B2 (ja) * | 2009-05-26 | 2014-01-22 | 株式会社神戸製鋼所 | 連結部品 |
ITMI20120206A1 (it) * | 2012-02-14 | 2013-08-15 | Cifa Spa | Segmento di un braccio articolato e braccio articolato comprendente detto segmento |
JP6914829B2 (ja) * | 2017-12-27 | 2021-08-04 | 株式会社クボタ | 作業機のアーム |
KR102557805B1 (ko) * | 2021-08-27 | 2023-07-20 | 신의페트라 주식회사 | 파일드라이버 스테이암용 분할구조 조인트 및 그 제작 방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0720335U (ja) * | 1993-09-14 | 1995-04-11 | 株式会社小松製作所 | 油圧式パワーショベルの作業機 |
JP2000248576A (ja) * | 1999-03-03 | 2000-09-12 | Shin Caterpillar Mitsubishi Ltd | 作業機械の作業腕構造 |
JP2003261956A (ja) * | 2002-01-04 | 2003-09-19 | Komatsu Ltd | 作業機の長尺構造部材 |
JP2005163375A (ja) * | 2003-12-02 | 2005-06-23 | Hitachi Constr Mach Co Ltd | 建設機械のアーム |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2802584A (en) * | 1953-08-24 | 1957-08-13 | Daniel F Przybylski | Dipper stick extension |
US5375348A (en) * | 1992-04-23 | 1994-12-27 | Japanic Corporation | Deep excavator |
JPH06294144A (ja) * | 1993-04-08 | 1994-10-21 | Komatsu Ltd | 建設機械用作業機の製造方法 |
US5806313A (en) * | 1995-11-30 | 1998-09-15 | Caterpillar Inc. | Conduit arrangement for a construction machine |
GB2343174B (en) * | 1997-07-15 | 2001-10-31 | Komatsu Mfg Co Ltd | Boom of bucket type excavator and producing method thereof |
JPH11200397A (ja) * | 1998-01-10 | 1999-07-27 | Komatsu Ltd | 建機作業機用箱形構造物の製造方法 |
US6158949A (en) * | 1998-04-29 | 2000-12-12 | Caterpillar Inc. | Boom assembly of a work machine |
JP2005029984A (ja) * | 2003-07-08 | 2005-02-03 | Hitachi Constr Mach Co Ltd | 建設機械用作業腕及びその製造方法 |
-
2006
- 2006-03-13 JP JP2006067816A patent/JP4296182B2/ja not_active Expired - Fee Related
- 2006-08-25 CN CNA2006800543393A patent/CN101426981A/zh active Pending
- 2006-08-25 EP EP06796790.1A patent/EP2136003A4/en not_active Withdrawn
- 2006-08-25 US US12/282,837 patent/US20090129908A1/en not_active Abandoned
- 2006-08-25 WO PCT/JP2006/316717 patent/WO2007105325A1/ja active Application Filing
- 2006-08-25 KR KR1020087024635A patent/KR100965036B1/ko not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0720335U (ja) * | 1993-09-14 | 1995-04-11 | 株式会社小松製作所 | 油圧式パワーショベルの作業機 |
JP2000248576A (ja) * | 1999-03-03 | 2000-09-12 | Shin Caterpillar Mitsubishi Ltd | 作業機械の作業腕構造 |
JP2003261956A (ja) * | 2002-01-04 | 2003-09-19 | Komatsu Ltd | 作業機の長尺構造部材 |
JP2005163375A (ja) * | 2003-12-02 | 2005-06-23 | Hitachi Constr Mach Co Ltd | 建設機械のアーム |
Non-Patent Citations (1)
Title |
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See also references of EP2136003A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105598639A (zh) * | 2015-02-11 | 2016-05-25 | 吴新良 | 挖掘机斗齿的制造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2136003A1 (en) | 2009-12-23 |
CN101426981A (zh) | 2009-05-06 |
KR100965036B1 (ko) | 2010-06-21 |
JP4296182B2 (ja) | 2009-07-15 |
EP2136003A4 (en) | 2013-04-24 |
KR20080111051A (ko) | 2008-12-22 |
JP2007247143A (ja) | 2007-09-27 |
US20090129908A1 (en) | 2009-05-21 |
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