WO2019117431A1 - 건설기계용 퀵 커플러 연결구조체 - Google Patents

건설기계용 퀵 커플러 연결구조체 Download PDF

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Publication number
WO2019117431A1
WO2019117431A1 PCT/KR2018/010662 KR2018010662W WO2019117431A1 WO 2019117431 A1 WO2019117431 A1 WO 2019117431A1 KR 2018010662 W KR2018010662 W KR 2018010662W WO 2019117431 A1 WO2019117431 A1 WO 2019117431A1
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WO
WIPO (PCT)
Prior art keywords
pin
quick coupler
movable
coupling
block
Prior art date
Application number
PCT/KR2018/010662
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
김호철
Original Assignee
대모 엔지니어링 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대모 엔지니어링 주식회사 filed Critical 대모 엔지니어링 주식회사
Priority to EP18887627.0A priority Critical patent/EP3725953B1/de
Priority to IL274644A priority patent/IL274644B2/en
Publication of WO2019117431A1 publication Critical patent/WO2019117431A1/ko

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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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3618—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with two separating hooks
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/965—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of metal-cutting or concrete-crushing implements

Definitions

  • the present invention relates to a quick coupler connection structure for a construction machine, and more particularly, to a structure in which a coupling position of a movable rod and a connection block is automatically adjusted so that a quick and safe coupling of a quick coupler main body and a heavy equipment attachment device can be achieved, And the attachment structure of the attachment device are connected by a pin and a hook connection method of a three-point support type, thereby improving the assemblability, obtaining a strong connection force, and improving the structure of the quick coupler Connection structure.
  • excavator is widely used construction equipment such as road construction, waterworks and drainage construction, construction foundation construction, land construction construction, And various attachments are selectively installed according to the operation of the system.
  • the attachment is attached to the arm of the excavator so that it can be replaced with the purpose of the work, and recently, a separate coupler is mounted on the arm of the excavator, and a quick coupler Has been developed and widely used.
  • the quick coupler is rigidly mounted to the arm of the excavator and the push link of the cylinder side through the two pin coupling structures in the quick change body and has a structure that can fasten the attachment using the fixed hook and the movable hook.
  • the operator can easily handle and use the attachment by a method in which the operator of the excavator operates the lever to couple or separate the quick coupler mounted on the end of the arm to a bucket, a breaker, or the like.
  • the quick coupler is equipped with a safety device, for example, a safety pin, as a means to prevent the risk of separation of the attachment due to a malfunction of the hydraulic cylinder in the quick coupler or damage to the hydraulic hose .
  • a safety device for example, a safety pin
  • the conventional prior art has a locking hook member and a force transmitting member associated with the movement of the moving hook to double lock the fixing hook.
  • the operation of connecting the pin member to the fixing hook and the moving hook is troublesome, There is an inconvenience that the manufacturing cost is increased as well as the assembly and separation of the pin and the quick coupler are complicated due to the complicated process of attaching and detaching the pin and the quick coupler.
  • the coupling method of the quick coupler main body and the attachment body is fixed, and the upper connecting portion of the quick coupler main body is connected to the hook for attaching to the assembling hook formed on the upper portion of the fixed coupler.
  • the lower portion of the fixed jaw and the lower portion of the quick coupler body are coupled in a surface contact manner, while the cylinder connecting pin of the lower quick coupler body is hooked to the fixing hook.
  • connection block of the movable jaw and the pin coupling position of the movable rod of the quick coupler main body are matched with each other, , A safety jam is liable to occur in the process of lifting the movable jaw of heavy attaching equipment manually to the movable rod side provided on the upper side of the quick coupler main body and connecting the connecting block and the movable rod to the quick coupler main body by pin-
  • the movable cylinder for operating the movable jaw is to fix the movable cylinder before the coupling between the quick coupler main body and the attachment equipment, and the fixing pin for fixing the movable cylinder is connected to the quick coupler main body and attachment device It is necessary to keep it separately.
  • Patent Document 1 Korean Registered Patent Publication No. 10-1043036 "Attachment Coupler for Heavy-Duty Cost to Ensure Full Mounting of Attachment" (Registered on June 14, 2011)
  • Patent Document 2 Korean Patent Registration No. 10-1425075 entitled “ Heavy-duty attachment structure with quick change coupling method "(registered on July 24, 2014)
  • the present invention has been made in view of the above-described problems, and it is an object of the present invention to automatically adjust a joining position of a movable rod and a connection block so that a quick and safe coupling of a quick coupler main body and a heavy equipment attachment device can be achieved,
  • the connection structure of the quick coupler main body and the attachment device is connected with the pin and hook coupling method of the three-point support type, thereby improving the assemblability, obtaining a strong connection force, and improving the structure to reduce operating noise And a quick coupler connection structure for a construction machine.
  • the present invention provides a quick coupler connection structure for a construction machine, the structure of which is improved so that the structure can be stored.
  • the present invention provides a left and right quick coupler body integrally connected to a left and a right by a rear connecting plate facing each other on a left and a right side, A first connecting pin and a second connecting pin for connecting the left and right quick coupler bodies, and a second connecting pin for connecting the left and right quick coupler bodies to each other, A quick coupler main body having a cylinder connecting pin for rotatably supporting the cylinder; An attachment device detachably coupled to the quick coupler main body and configured to be movable with respect to the fixed jaw; And a guide piece provided on the inner side of the connection block and guiding a pin assembly position of the connection block and the movable rod when the movable jaw rotates.
  • the guide piece is formed to protrude from the inner side surface of the movable bracket facing each other and is rounded to have a radius of curvature corresponding to the rounded upper curvature of the movable rod, and has an angle range of 90 to 180 degrees.
  • a lower portion of a movable cylinder for operating the movable jaw is axially coupled to the quick coupler main body and supporting means for preventing the movable cylinder from rotating before the movable rod of the movable cylinder is engaged with the connection block of the movable jaw
  • a supporting block having a fixing block having one side fixed to the outer circumferential surface of the cylinder tube of the movable cylinder, a supporting block having one side detachably coupled to the fixing block by bolts and a fixing hole formed on the other side, And a support hole formed perforated in the left and right quick coupler bodies and to which a support pin penetratingly coupled to the fixing hole is pin-coupled.
  • a storage hole formed in the left and right quick coupler bodies to store the support pins when the movable rods and the movable jaws are coupled.
  • the engaging pin is formed with a planar chamfered portion on one outer circumferential surface and a hooking protrusion is formed on the outer circumferential surface of the other end of the engaging pin so as to be connected from the end of the chamfered portion to prevent separation of the connecting block from the connecting hole, And a chamfered surface corresponding to the chamfered portion and interfering with the chamfer is formed on the inner circumferential surface of the connecting hole formed in the block.
  • a fastening bolt formed integrally with the right connection block and formed with a hollow to allow the engagement pin to be introduced and drawn out and a fastening bolt to be fastened to the fastening hole; And an interlocking block having a fastening block having a ball formed therein and a fastening bolt coupled to one end of the fastening pin for interlocking with the fastening bolt when the fastening bolt is inserted and withdrawn.
  • the movable jaw In the process of pin joining the movable jaw of the attachment device and the movable rod of the movable cylinder with the engagement pin, the movable jaw is rotated in the advancing direction of the clock needle by using the excavator equipment, Since the assembling position of the engaging pin is automatically determined by the surface contact with the upper surface of the movable jaw, the assembling position of the engaging pin is automatically determined instead of manual operation, thereby preventing a safety accident of the operator. And the like.
  • the first and second connection pins and the cylinder connection pin are provided on one side of the quick coupler main body.
  • the first and second connection pins and the cylinder connection pin are formed on the other side of the fixed jaw,
  • the hook and the fixing hook are provided so that the fixing jaw and the quick coupler body are combined by the three-point supporting method when the hook of the quick coupler body is engaged, so that the assembly is simple and the connecting force can be reinforced at the time of assembly.
  • the movable cylinder is supported by the support pin so that the movable cylinder can be fixed to the left and right quick coupler bodies before the engagement of the engagement pin, but the support pin can be inserted So that the support pin can be easily stored and managed.
  • the chamfered portion and the engaging jaw are formed on the outer circumferential surface of the engaging pin, it is possible to prevent the engaging pin from being separated from the engaging pin before the engaging action of the movable rod and the connecting block,
  • the coupling pin can be easily fixed as the coupling bolt is coupled to the fitting hole of the coupling pin.
  • FIG. 1 is a perspective view showing a quick coupler connection structure for a construction machine according to the present invention
  • FIG. 2 is an exploded perspective view of the attachment device of the present invention and the quick coupler main body.
  • Figure 3 is a front view of Figure 1;
  • FIG. 4A is a front view showing the state of the holding means before the coupling pin of the present invention is coupled to the movable jaw
  • FIG. 4B is a view showing a state in which the supporting pin of the supporting means is stored in the holding hole after the coupling pin of the present invention is coupled to the movable jaw Front view shown.
  • FIG. 5A is a cross-sectional view showing a state where the coupling pin of the present invention is fastened to a connection block
  • FIG. 5B is a sectional view taken along line A-A of FIG. 4A, and shows a state before the coupling pin is fastened to the coupling block.
  • FIG. 6 is a perspective view showing the movable cylinder and the support means of the present invention.
  • FIG. 7 is a plan view of the movable cylinder and the support means of the present invention in plan view.
  • FIGS. 8A, 8B, 8C, and 8D are explanatory views illustrating a connection process of a quick coupler connection structure for a construction machine according to the present invention.
  • connecting plate 131 first connecting pin
  • connection block 230 hinge shaft
  • fastening bolt 300 support means
  • the quick coupler connecting structure for a construction machine includes left and right quick coupler bodies integrally connected to each other on both left and right sides by a rear connecting plate 130, And a connection pin 225 provided on the movable jaw 220 of the attachment device 200 is provided with a coupling pin 140 on the upper portion of the coupling block 225, A first connecting pin 131 and a second connecting pin 132 for connecting the left and right quick coupler bodies 110 and 120 with each other and a movable cylinder 150 having a movable rod 154 provided to be coupled to the movable cylinder 150, (100) having a cylinder connecting pin (133) for rotatably supporting the cylinder head (150); An attachment device (200) detachably coupled to the quick coupler body (100) and composed of a movable jaw (220) rotatable with respect to the fixed jaw (210); And a guide piece 250 provided on the inner side of the connection block 225 and guiding a pin assembly position of the connection block 225 and the
  • the quick coupler main body 100 includes left and right quick coupler bodies 110 and 120 which are separated from each other on left and right sides and are integrally connected by a rear connecting plate 130.
  • the left and right quick coupler bodies 110 and 120 have a structure in which the first and second connection pins 131 and 132 are coupled to one side.
  • the attachment device 200 includes a fixed jaw 210 having first and second assembling hooks 212 and 214 to be hooked to the first and second connecting pins 131 and 132, And a movable jaw 220 rotatably hinged and rotated by a movable cylinder 150 supported by the quick coupler main body 100.
  • the fixed jaw 210 includes a first assembly hook 212 formed on one side of the first jaw 210 to receive the first connection pin 131 of the quick coupler body 100, And a second connecting pin 132 of the quick coupler main body 100 is fixed to a lower portion of one side of the fixed jaw 210.
  • the fixing hooks 213 are formed on the inner side of the lower jaw 210, A second assembling hook 214 formed so as to be coupled with the first assembling hook 214 is formed.
  • the first assembling hook 212 is formed in the form of a hook opened downward in the downward direction and the fixing hook 213 is formed in the shape of a hook opened upward in the upper direction, (214) has a laterally open structure.
  • a first coupling pin 131 is pin-coupled to a first coupling hook 212 of the fixed jaw 210, and the second coupling pin 131 is coupled to the second coupling hook 214
  • the connection pin 132 is hooked and the cylinder connection pin 133 is hooked to the fixing hook 213 so that the fixed jaw 210 is stably positioned at the upper and lower portions of the quick coupler body 100 So that they have a strong connecting force.
  • the guide piece 250 is formed to protrude from the inner side surface of the connection block 225 facing each other and rounded to have a radius of curvature corresponding to the rounded upper curvature of the movable rod 154.
  • the angle range ⁇ of the guide piece 250 is in the range of 90 to 180 ° and when the angle of the guide piece 250 is less than 90 °, If the angle of the guide piece 250 exceeds 180 °, there is a fear that the movable rod 154 may interfere with the rotation of the movable jaw 220.
  • the movable rod 154 is formed to have a rounded curvature at an upper portion thereof, and a coupling hole is formed so that the coupling pin 140 is inserted therethrough.
  • connection block 225 is formed with a connection hole 226 through which the coupling pin 140 passes.
  • the coupling pin 140 has a planar surface 142 formed on one outer circumferential surface thereof and is connected to the other outer circumferential surface of the coupling pin 140 from the end of the planar surface 142,
  • a locking protrusion 143 for preventing the detachment of the connection block 250 from the connection hole 226 is formed on the inner circumferential surface of the connection hole 226 formed in the left connection block 250, And a chamfered surface (226a) corresponding to the engaging jaw (143) is formed.
  • the present invention includes a fitting hole 144 formed at one side and the other end of the coupling pin 140, a fitting hole 144 integrally coupled to the right coupling block 250, A fastening block 270 having a fastening hole 275 for fastening a fastening bolt 290 to be fitted in the fitting hole 144 and having a hollow to allow the fastening pin 140 to be introduced and withdrawn, An interlocking block 280 with a fastening hole 275 for fastening a fastening bolt 290 which is coupled to one end of the fastening pin 140 and interlocked with the fastening bolt 290 to be engaged with the pin 140 ).
  • the coupling pin 140 is moved to the left side of the coupling block 250 and separated from the coupling hole 226 of the right coupling block 250 before assembling the movable block 154 and the coupling block 250,
  • the rim of the chamfered surface 226a is interfered with the engaging protrusion 143 so that the coupling pin 140 and the right connecting block 250 are prevented from being separated from each other in a state in which the end portion is fitted in the connecting hole 226 of the connecting block 250.
  • the coupling pin 140 is moved to the right to assemble the movable block 154 and the coupling block 250 so that the end of the coupling pin 140 is coupled to the right coupling block 250, And an interlocking block 280 coupled to one end of the coupling pin 140 is disposed adjacent to the left connection block 250.
  • the movable cylinder 150 is rotated so that the movable cylinder 150 is not rotated before the movable rod 154 of the movable cylinder 150 is engaged with the coupling pin 140 to the connection block 250 of the movable jaw 220. [ (300) for supporting the support member (300).
  • the supporting means 300 includes a fixing block 310 having one side fixed to the outer circumferential surface of the cylinder tube 152 of the movable cylinder 150, A support block 320 provided with a connection protrusion 325 detachably connected to the main body 310 and having a fixing hole 325a formed on the other side thereof and a fixing block 325 formed on the left and right quick coupler bodies 110 and 120, And a support hole 330 to which a support pin 350 penetratingly connected to the hole 325a is coupled.
  • the support means 300 is formed in the left and right quick coupler bodies 110 and 120 and is formed in a storage hole (not shown) for storing the support pin 350 when the movable jaw 220 is coupled with the movable rod 154 340 are further provided.
  • the storage hole 340 is formed on the upper side of the support hole 330 so as not to interfere with the support pin 350 when the movable cylinder 150 rotates.
  • the coupling process of the quick coupler main body 100 of the present invention having the above-described structure and the attachment device 200 is performed such that the first connection pin 131 is hooked to the first assembly hook 212 as shown in FIG. 8A
  • the first coupling pin 131 is moved to the lower opened side of the first coupling hook 212 to connect the first coupling pin 131 and the second coupling pin 131 to each other, as shown in FIG. 8B, after the quick coupler main body 100 is prepared in the diagonal position,
  • the second connection pin 132 is moved in the side direction of the opening of the second assembly hook 214 as shown in FIG. 8C,
  • the cylinder connecting pin 133 is hooked to the fixing hook 213 in the process of coupling the pin 132 to the second assembling hook 214.
  • the guide piece 250 provided on the connecting block 225 contacts the upper surface of the movable rod 154 when the movable jaw 220 rotates and the upper contact of the guide piece 250 and the movable rod 154
  • the pin coupling positions of the connection block 225 and the movable rod 154 using the first and second coupling pins 140 and 140 coincide with each other.
  • the guide piece 250 is automatically brought into contact with the upper surface of the movable rod 154 without having to manually adjust the pin assembly position of the movable rod 154 and the movable jaw 220, So that the convenience of operation is increased.
  • the coupling pin 140 which is moved to the left side of the left connection block 250 and separated from the connection hole 226 of the right connection block 250, is moved to the right side as described above,
  • the coupling pin 140 is inserted into the coupling hole 226 of the left connecting block 250 as shown in Figure 5A by pin coupling with the coupling hole 226 of the block 250 and the coupling hole of the movable rod 154,
  • the coupling block 270 and the coupling pin 280 of the coupling block 280 and the coupling pin 274 of the right coupling block 250 are coupled to each other,
  • the coupling process of the quick coupler main body 100 and the attachment device 200 is completed by fixing the coupling pin 140 by coupling the coupling bolt 290 to the fitting hole 144 of the coupling device 140.
  • the supporting means 300 is fixed to the fixing hole 325a of the supporting block 320 and the left and right quick coupler bodies 110 and 120
  • the cylinder tube 152 of the movable cylinder 150 is fixed to the left and right quick coupler bodies 110 and 120 by the support pin 350 by pinning the support pin 350 to the support hole 330 formed in the movable cylinder 150
  • the rotation and rotation of the movable cylinder 150 can be suppressed before the movable cylinder 150 is pinned to the movable jaw 220 by the engagement pin 140.
  • the movable jaw 220 of the attachment device 200 and the movable rod 154 of the movable cylinder 150 are coupled to each other by the coupling pin 140.
  • the guide piece 250 provided on the connection block 225 of the movable jaw 220 is brought into surface contact with the upper surface of the movable jaw 220 to automatically rotate the engagement pin 240
  • the assembly position is determined so that the assembling position of the coupling pin 140 is automatically determined instead of manual operation so that a safety accident of the operator can be prevented and the pin coupling operation of the coupling pin 140 can be easily performed .
  • the first and second connecting pins 131 and 132 and the cylinder connecting pin 133 are provided on one side of the quick coupler main body 100.
  • the first and second connecting pins 131 and 132 and the cylinder connecting pin 133 are provided on one side of the quick coupler main body 100, Since the first and second assembling hooks 212 and 214 and the fixing hook 213 are provided on the other side of the fixed jaw 210 to be viewed, when the hooks of the fixed jaw 210 and the quick coupler body 100 are hooked, So that it is easy to assemble and the connecting force can be reinforced when assembled.
  • the present invention is characterized in that the movable cylinder 150 is supported by the support pins 350 so that the movable cylinder 150 can be fixed to the left and right quick coupler bodies 110 and 120 before the engagement of the engagement pin 140,
  • the support pins 350 can be stored in the storage holes 340 so that the support pins 350 can be easily stored and managed.
  • the fastening bolt 290 is coupled to the fitting hole 144 of the fastening pin through the fastening hole 275 formed in the fastening block 270 and the fastening block 280, So that it can be fixed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
PCT/KR2018/010662 2017-12-15 2018-09-12 건설기계용 퀵 커플러 연결구조체 WO2019117431A1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18887627.0A EP3725953B1 (de) 2017-12-15 2018-09-12 Schnellkopplerverbindungssystem für baumaschine
IL274644A IL274644B2 (en) 2017-12-15 2018-09-12 Quick coupling connection system for connection to a construction machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0173065 2017-12-15
KR1020170173065A KR101870713B1 (ko) 2017-12-15 2017-12-15 건설기계용 퀵 커플러 연결구조체

Publications (1)

Publication Number Publication Date
WO2019117431A1 true WO2019117431A1 (ko) 2019-06-20

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Application Number Title Priority Date Filing Date
PCT/KR2018/010662 WO2019117431A1 (ko) 2017-12-15 2018-09-12 건설기계용 퀵 커플러 연결구조체

Country Status (4)

Country Link
EP (1) EP3725953B1 (de)
KR (1) KR101870713B1 (de)
IL (1) IL274644B2 (de)
WO (1) WO2019117431A1 (de)

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Publication number Priority date Publication date Assignee Title
KR102226954B1 (ko) * 2020-09-18 2021-03-11 유제록 중장비 또는 산업용 기계와 작업장치 자동 연결장치의 자동 유압 연결장치

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JP2008280798A (ja) * 2007-05-14 2008-11-20 Nippon Sharyo Seizo Kaisha Ltd 連結軸の固定構造
US20080296031A1 (en) * 2007-05-30 2008-12-04 Brandt Industries Ltd. Quick Coupling Mechanism for Tool Attachment
KR101043036B1 (ko) 2009-05-19 2011-06-21 주식회사 에버다임 어태치먼트의 완전 장착을 보장하는 중장비용 어태치먼트 커플러
KR101425075B1 (ko) 2013-07-10 2014-08-04 대모 엔지니어링 주식회사 퀵 체인지 결합방식을 갖는 중장비 어태치먼트 구조체
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KR101254193B1 (ko) * 2011-05-02 2013-04-18 대모 엔지니어링 주식회사 중장비 작업기의 퀵체인지 구조
KR101378570B1 (ko) * 2012-04-26 2014-03-28 대모 엔지니어링 주식회사 중장비용 작업기 퀵 체인저

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007085036A (ja) * 2005-09-20 2007-04-05 Yanmar Co Ltd 作業機の固定構造
JP2008280798A (ja) * 2007-05-14 2008-11-20 Nippon Sharyo Seizo Kaisha Ltd 連結軸の固定構造
US20080296031A1 (en) * 2007-05-30 2008-12-04 Brandt Industries Ltd. Quick Coupling Mechanism for Tool Attachment
KR101043036B1 (ko) 2009-05-19 2011-06-21 주식회사 에버다임 어태치먼트의 완전 장착을 보장하는 중장비용 어태치먼트 커플러
KR101425075B1 (ko) 2013-07-10 2014-08-04 대모 엔지니어링 주식회사 퀵 체인지 결합방식을 갖는 중장비 어태치먼트 구조체
KR101806958B1 (ko) * 2017-09-25 2017-12-08 성보공업주식회사 굴삭기의 버킷용 투스

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Publication number Publication date
KR101870713B1 (ko) 2018-08-03
IL274644B1 (en) 2023-11-01
EP3725953A4 (de) 2021-08-18
EP3725953B1 (de) 2023-06-07
IL274644B2 (en) 2024-03-01
IL274644A (en) 2020-06-30
EP3725953A1 (de) 2020-10-21

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