IL274644B1 - Quick coupler connection system for construction machine - Google Patents
Quick coupler connection system for construction machineInfo
- Publication number
- IL274644B1 IL274644B1 IL274644A IL27464420A IL274644B1 IL 274644 B1 IL274644 B1 IL 274644B1 IL 274644 A IL274644 A IL 274644A IL 27464420 A IL27464420 A IL 27464420A IL 274644 B1 IL274644 B1 IL 274644B1
- Authority
- IL
- Israel
- Prior art keywords
- quick coupler
- connection
- pin
- coupled
- hook
- Prior art date
Links
- 238000010276 construction Methods 0.000 title claims description 21
- 238000010168 coupling process Methods 0.000 claims description 55
- 238000005859 coupling reaction Methods 0.000 claims description 55
- 230000008878 coupling Effects 0.000 claims description 50
- 238000000926 separation method Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
-
- 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
Landscapes
- 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)
Description
January 31, 20 DESCRIPTION QUICK COUPLER CONNECTION SYSTEM FOR CONSTRUCTION MACHINE Technical Field [0001] The present invention relates to a quick coupler connection system for a construction machine and, more particularly, to a quick coupler connection system for a construction machine in which the coupling position of an actuating rod and a connecting block is automatically adjusted so that a quick coupler main body and a heavy equipment attachment device are quickly and safely combined, in which the quick coupler main body and the attachment device can be more easily combined, a stronger connection force can be achieved, and operation noise can be reduced by combining the quick coupler main body and the attachment device in a 3-point supporting type and a pin-hook coupling type. Background Art [0002] In general, heavy equipment that is used at construction sites or engineering work sites, for example, an excavator is construction equipment that is widely used for a road construction, waterworks and sewer construction, basic building construction, land development construction, construction for picking earth and sand, etc. Such equipment 25 January 31, 20 is selectively equipped with various attachments for different purposes, depending on the purpose of the work. [0003] It is possible to change various attachments and perform various works, depending on purposes such as a digging work that uses a bucket, a work of crushing concrete building and cutting reinforcing rods using a crusher, a work of breaking rocks and concrete, a work of carrying scrap iron and rocks using a grab, a work of digging vertical pits and construction foundations for water and sewer facilities using a clamshell bucket. [0004] An attachment is usually detachably coupled to the arm of an excavator to be replaced, depending on purposes, and recently, a quick coupler that is coupled to the arm of an excavator and enables an attachment to be easily connected has been developed and widely used. [0005] The quick coupler is firmly coupled to the arm and the cylinder-side push link of an excavator by two pin coupling structures on a quick change body and can fasten an attachment using a fixed hook and a moving hook. [0006] Accordingly, a driver of an excavator couples or separates the quick coupler to or from a bucket or a breaker mounted at the end of an arm by operating a lever, so it is possible to easily handle and use attachments. [0007] Meanwhile, the quick coupler has a safety device, for example, a safety pin to prepare for a safety accident 25 January 31, 20 as a measure for preventing the danger of separation of an attachment due to breakdown of a hydraulic cylinder of the quick coupler or damage to a hydraulic hose during work. [0008] However, in order to replace an attachment such as a bucket or a breaker on the quick coupler, a worker has to manually separate a safety pin from a previously mounted attachment or fasten a safety pin after mounting a new attachment, so the work is difficult and troublesome and takes a long of time. [0009] In the related art, there is Korean Patent No. 10-1043036, titled "Attachment coupler for heavy machinery, ensuring a complete coupling with the attachment" (registered on June 14, 2011). The attachment coupler includes: a coupler body coupled to an end of an arm of a heavy construction vehicle; a fixed hook fixed to the coupler body to be fastened to one of coupling pins facing an attachment; a moving hook rotatably coupled to the coupler body by a hinge shaft formed on the coupler body to be fastened to the others of the pin fastened to the fixed hook of the coupling pins of the attachment; a hydraulic cylinder rotating the moving hook by stretching/contracting with an end coupled to the moving hook by a first fixing pin and the other end coupled to the coupler body by a second fixing pin; a locking hook rotatably coupled to the coupler body by the second fixing pin and having an end curved in a 25 January 31, 20 hook shape; and a power transmission member having an end supported such that the position is changed by rotation of the moving hook and the other end coupled to the other end of the locking hook by a third fixing pin, in which the fixed hook can be doubly locked when the coupler and an attachment are combined, so there is the advantage of preventing separation of the attachment. [0010] According to this related art, it is possible to doubly lock the fixed hook using the locking hook and the power transmission member that are operated with movement of the moving hook, but it is difficult to couple the pin member, the fixed hook, and the moving hook and the configuration for attachment/detachment and double safety coupling is complicated, so the manufacturing cost increases. Further, it is complicated to couple/decouple the pins and the quick coupler to/from each other, so there is inconvenience that assembly and disassembly can be made only at the exact position. [0011] As another example related with a quick coupler, there is Korean Patent No. 10-1425075, titled "Attachment quick change construction for heavy equipment" (registered on July 24, 2014) by the same applicant(s), which includes: a quick change body firmly mounted at an end of the arm of the heavy equipment; a jaw body having a fixed jaw detachably coupled to a side of the quick change body by a 25 January 31, 20 coupler and a moving jaw pivot-coupled to the fixed jaw and being rotatable by the operation of a cylinder, in which the coupler has an opening being laterally open at a side of the fixed jaw and having an assembly hook and a fixed hook facing each other up and down, an assembly pin member pin- fixed to a side of the quick change body and pivot-coupled to the assembly hook, and a fixed fin member being elevated by an elevator disposed at a side of the quick change body, and being fitted to the fixed hook when moving down. [0012] However, according to the existing quick coupler structure, in order to couple the quick coupler body and the attachment body, a first connection pin of the quick coupler body is hooked to the assembly hook formed at the upper portion of the fixed jaw and the cylinder connection pin at the lower portion of the quick coupler body is hooked to the fixing hook to couple the fixed jaw to the upper connection portion of the quick coupler body, but the lower portion of the fixed jaw and the lower portion of the quick coupler body are coupled in a surface contact type. Therefore, the quick coupler body and the attachment body may not be firmly connected and shock noise may be generated by contact of the lower connection portion in the process of assembly. [0013] Further, a worker has to manually align the connection block of the moving jaw and the actuating rod of the quick coupler body at the pin-coupling position and then 25 January 31, 20 pin-couple them using a coupling pin, but there is a possibility of a safety accident of the worker in the process of connecting a heavy attachment to the quick coupler body by manually lifting the moving jaw of the attachment to the actuating rod at the upper portion of the quick coupler body and then pin-coupling the connection block to the actuating rod. Further, it is difficult to align the coupling positions of the connection block and the moving road, so the work takes long time. [0014] Further, it is required to fix the actuating cylinder for operating the moving jaw before coupling the quick coupler body and an attachment in the existing quick coupler body and it is required to separately keep the fixing pin for fixing the actuating cylinder after coupling the quick coupler body and the attachment. [0015] Documents of Related Art [0016] (Patent Document 1) Korean Patent No. 10-1043036, "Attachment coupler for heavy machinery, ensuring a complete coupling with the attachment" (registered on June 14, 2011) [0017] (Patent Document 2) Korean Patent No. 10-1425075, titled "Attachment quick change construction for heavy equipment" (registered on July 24, 2014) Disclosure Technical Problem 25 January 31, 20 id="p-18" id="p-18" id="p-18" id="p-18" id="p-18"
id="p-18"
[0018] The present invention has been made in an effort to solve the problems and an objective of the present invention is to provide a quick coupler connection system for a construction machine in which the coupling position of an actuating rod and a connecting block is automatically adjusted so that a quick coupler body and a heavy equipment attachment device are quickly and safely combined, in which the quick coupler body and the attachment device can be more easily combined, a stronger connection force can be achieved, and operation noise can be reduced by combining the quick coupler body and the attachment device in a 3-point supporting type and a pin-hook coupling type. [0019] Another objective of the present invention is to provide a coupler connection system for a construction machine that enables an actuating cylinder to be easily fixed to a quick coupler body by a fixing pin before a quick coupler main body and an attachment are coupled, and enables a fixing pin to be easily kept after the quick coupler main body and the attachment are coupled. Technical Solution [0020] In order to achieve the objectives of the present invention, a quick coupler connection system for a construction machine includes: a quick coupler main body that includes left and right quick coupler bodies facing 25 January 31, 20 each other at left and right sides and connected to each other by a connection plate on rears thereof, an actuating cylinder rotatably disposed inside the left and right quick coupler bodies and having an actuating rod disposed on a top thereof and coupled to a connection block of a moving jaw of an attachment by a coupling pin, and a first connection pin and a second connection pin connecting the left and right quick coupler bodies and a cylinder connection pin rotatably supporting the actuating cylinder; the attachment detachably coupled to the quick coupler main body and having the moving jaw being rotatable with respect to a fixed jaw; and guides disposed on inner surfaces of a connection block and guiding pin assembly positions of a connection block and the actuating rod when the moving jaw is rotated. [0021] The quick coupler connection system may further include: a first assembly hook formed such that the first connection pin of the quick coupler main body is coupled to an upper portion of the fixed jaw; a fixing hook formed such that the cylinder connection pin is coupled inside a lower portion of the fixed jaw; and a second assembly hook formed such that the second connection pin of the quick coupler main body is coupled to the lower portion of the fixed jaw. [0022] The guides may protrude from inner sides of a connection block facing each other, may be rounded to have a radius of curvature corresponding to a curvature of the 25 January 31, 20 rounded upper portion of the actuating rod, and may have an angular range of 90~180°. [0023] A lower portion of the actuating cylinder operating the moving jaw may be shaft-coupled to the quick coupler main body, a supporting assembly that supports the actuating cylinder to prevent rotation of the actuating cylinder before the actuating rod of the actuating cylinder is coupled to the connection block of the moving jaw may be provided, the supporting assembly may have a fixed block fixed on an outer surface of a cylinder tube of the actuating cylinder on a side, a supporting block detachably coupled to the fixed block on a side by a bolt and having a coupling protrusion having a fixing hole, and supporting holes formed through the left and right quick coupler bodies such that a supporting pin disposed through the fixing hole is pin-coupled therein. [0024] The quick coupler connection system may further include keeping holes formed through the left and right quick coupler bodies to keep the supporting pin when the actuating rod and the moving jaw are combined. [0025] The coupling pin may have a flat chamfered portion on a side of an outer surface and a stopping step continuing from an end of the chamfered portion on another side of the outer surface of the coupling pin to prevent separation out of the connection holes of the connection 25 January 31, 20 block, and a chamfered surface corresponding to the chamfered portion and locked to the stopping step is formed on an inner surface of the connection hole formed at a side of a connection block. [0026] The quick coupler connection system may further include: fitting holes formed at a first end portion and a second end portion of the coupling pin; a fastening block integrally coupled to another side of the connection block, having a through-hole formed through a center for inserting and pulling out the coupling pin, and having a fastening hole in which a fastening bolt that is fitted in the fitting hole is inserted ; and a driven block coupled to the first end of the coupling fin to move with insertion and pulling-out of the coupling pin and having a fastening hole in which a fastening bolt that is fitted in the fitting hole is inserted. Advantageous Effects [0027] When the moving jaw is rotated clockwise by excavator equipment in the process of pin-coupling the moving jaw of the attachment and the actuating rod of the actuating cylinder with the coupling pin, the guides on the connection block of the moving jaw come in contact with the top of the moving jaw and the assembly position of the coupling pin is naturally determined. Accordingly, the 25 January 31, 20 assembly position of the coupling pin is determined not manually, but naturally, so it is possible to prevent a safety accident of a worker and easily pin-couple the coupling pin. [0028] Since the first and second connection pins and the cylinder pin are disposed at a side of the quick coupler main body and the first and second assembly hooks and the fixing hook are disposed at the other portion of the fixed jaw facing the side of the quick coupler main body to correspond to the pins, the fixed jaw and the quick coupler main body are coupled in a 3-point supporting type, so they an be simply and firmly assembled. [0029] The actuating cylinder is supported by the supporting pin to be able to be fixed to the left and right coupler bodies before pin-coupling of the coupling pin, but the supporting pin can be kept in the keeping hole after pin-coupling of the coupling pin, so it is possible to easily manage and keep the supporting pin. [0030] Since the chamfered portion and the stopping step are formed on the outer surface of the coupling pin, it is possible to prevent separation of the coupling pin before coupling the actuating rod and the connection block. Further, since the fastening bolts are inserted in the fitting hole of the coupling pin through the fastening holes of the fastening block and the driven block, the coupling pin can 25 January 31, 20 be easily fixed. Description of Drawings [0031] FIG. 1 is a perspective view of a quick coupler connection system for a construction machine according to the present invention; [0032] FIG. 2 is an exploded perspective view of an attachment and a quick coupler main body of the present invention; [0033] FIG. 3 is a front view of FIG. 1; [0034] FIG. 4a is a front view showing the state of a supporting member before a coupling pin is coupled to a moving jaw in the present invention and FIG. 4b is a front view showing the state a supporting pin of the supporting member is kept in a storage hole after the coupling pin is coupled to the moving jaw in the present invention; [0035] FIG. 5a is a cross-sectional view showing the state in which a coupling pin is fastened to a connection block in the present invention and FIG. 5b is a cross-sectional view taken along line A-A and showing the state before the coupling pin is fastened to the connection block; [0036] FIG. 6 is a perspective view showing an actuating cylinder and a supporting member of the present invention; [0037] FIG. 7 is a plan view showing the actuating cylinder and the supporting member of the present invention; 25 January 31, 20 and [0038] FIGS. 8a, 8b, 8c, and 8d are views sequentially showing the process of connecting the quick coupler connection system for a construction machine of the present invention. [0039] [0040] 100: quick coupler main body 110, 120: left and right quick coupler body [0041] 130: connection plate 131: first connection pin [0042] 132: second connection pin 133: cylinder connection pin [0043] 140: coupling pin 142: chamfered portion [0044] 143: stopping step 144: fitting hole [0045] 150: actuating cylinder 152: cylinder tube [0046] 154: actuating rod 200: attachment [0047] 210: fixed jaw 220: moving jaw [0048] 225: connection block 230: hinge shaft [0049] 250: guide 226: connection hole [0050] 226a: chamfered surface 270: fastening block [0051] 275: fastening hole 280: driven block [0052] 290: fastening bolt 300: supporting assembly [0053] 310: fixing block 320: supporting block [0054] 325: connection protrusion 325a: fixing hole 25 January 31, 20 id="p-55" id="p-55" id="p-55" id="p-55" id="p-55"
id="p-55"
[0055] 330: supporting hole 340: keeping hole [0056] 350: supporting pin Best Mode [0057] Referring to FIGS. 1 to 7, a quick coupler connection system for a construction machine according to the present invention includes: a quick coupler main body 100 that includes left and right quick coupler bodies 1and 120 facing each other at the left and right sides and connected to each other by a connection plate 130 on the rears thereof, an actuating cylinder 150 rotatably disposed inside the left and right quick coupler bodies 110 and 1and having an actuating rod 154 disposed on the top thereof and coupled to connection blocks 225 of a moving jaw 220 of an attachment 200 by a coupling pin 140, and a first connection pin 131 and a second connection pin 1connecting the left and right quick coupler bodies 110 and 120 and a cylinder connection pin 133 rotatably supporting the actuating cylinder 150; the attachment 200 capable to be detachable coupled to the quick coupler main body (100)and having the moving jaw 220 being rotatable with respect to a fixed jaw 210; and guides 250 disposed on the inner surfaces of a connection block 225 and guiding pin assembly positions of a connection block 225 and the actuating rod 154 when the moving jaw 220 is rotated. 25 January 31, 20 id="p-58" id="p-58" id="p-58" id="p-58" id="p-58"
id="p-58"
[0058] Referring to FIG. 1, the quick coupler main body 100 includes the left and right quick coupler bodies 110 and 120 spaced apart left and right from each other and connected to each other by the connection plate 130 on the rears thereof. [0059] The first and second connection pins 131 and 1are pin-coupled to portions of the left and right quick coupler bodies 110 and 120. [0060] The attachment 200 includes the fixed jaw 2having first and second assembly hooks 212 and 214 to fit a second side thereof to the first and second connection pins 131 and 132, and the moving jaw 220 rotatably hinged to the fixed jaw 210 to be rotated by the actuating cylinder 1supported in the quick couple main body 100. [0061] Referring to FIG. 2, the fixed jaw 210 further has a first assembly hook 212 formed such that the first connection pin 131 of the quick coupler main body 100 is coupled to the upper portion of a first side, a fixing hook 213 formed such that the cylinder connection pin 133 is coupled inside the lower portion of the first side of the fixed jaw 210, and a second assembly hook 214 formed such that the second connection pin 132 of the quick coupler main body 100 is coupled to a lower portion of the first side of the fixed jaw 210. [0062] The first assembly hook 212 is formed in a hook 25 January 31, 20 shape with the lower portion open downward, the fixing hook 213 is formed in a hook shape with the upper portion open upward, and the second assembly hook 214 has a structure being laterally open. [0063] Referring to FIGS. 2 and 3, the first connection pin 131 is pin-coupled to the first assembly hook 212 of the fixed jaw 210, the second connection pin 132 is hook-coupled to the second assembly hook 214, and the cylinder connection pin 133 is hook-coupled to the fixing hook 213, so the fixed jaw 210 is firmly coupled to the quick coupler main body 100 while being stably supported at three points at the upper and lower portions of the quick coupler main body 100. [0064] The guides 250 protrude from the inner sides of the connection blocks 225 facing each other and are rounded to have a radius of curvature corresponding to the curvature of the rounded upper portion of the moving rod 154. [0065] The guides 250 may have an angular range θ of 90~180°, when the angular range of the guides 250 may be less than 90°, the contact area with the actuating rod 1is small, so it may be unstable, and when the angular range of the guides 250 exceeds 180°, rotation of the moving jaw 220 may be interfered with by the actuating rod 154. [0066] The actuating rod 154 has a curvature at the rounded upper portion and has a coupling hole through which the coupling pin 140 is disposed. 25 January 31, 20
Claims (7)
1.CLA I MS 1. A quick coupler connection system for a construction machine, the quick coupler connection system comprising: a quick coupler main body (100) that includes left and right quick coupler bodies (110, 120) facing each other at left and right sides and connected to each other by a connection plate (130) on rears thereof, an actuating cylinder (150) rotatably disposed inside the left and right quick coupler bodies (110, 120) and having an actuating rod (154) disposed on a top thereof and coupled to connection block (225) of a moving jaw (220) of an attachment (200) by a coupling pin (140) and a first connection pin (131) and a second connection pin (132) connecting the left and right quick coupler bodies (110, 120) and a cylinder connection pin (133) rotatably supporting the actuating cylinder; the attachment (200) configured to detachably couple to the quick coupler main body (100) and having the moving jaw (220) being rotatable with respect to a fixed jaw (210); guides (250) disposed on inner surfaces of the connection block (225) and guiding pin assembly positions of the connection blocks (225) and the actuating rod (154) when the moving jaw (220) is rotated, and wherein a lower portion of the actuating cylinder (150) operating the moving jaw (220) is shaft-coupled to the quick coupler main body (100), a supporting assembly (300) that supports the actuating cylinder (150) to prevent rotation of the actuating cylinder (150) before the actuating rod (154) of the actuating cylinder (150) is coupled to the connection block (225) of the moving jaw (220) is provided, the supporting assembly (300) has a fixed block (310) fixed on an outer surface of a cylinder tube (152) of the actuating cylinder (150) on a side, a supporting block (320) detachably coupled to the fixed block (310) on a side by a bolt and having a coupling protrusion (325) having a fixing hole (325a), and supporting holes (330) formed through the left and right quick coupler bodies (110, 120) such that a supporting pin (350) disposed through the fixing hole (325a) is pin-coupled therein.
2. The quick coupler connection system of claim 1, wherein the guides (250) protrude from inner sides of the connection block (225) facing each other, are rounded January 31, 2023 26 to have a radius of curvature corresponding to a curvature of the rounded upper portion of the actuating rod (154), and have an angular range of 90º~180º.
3. The quick coupler connection system of claim 1, further comprising: a first assembly hook (212) formed such that the first connection pin (131) of the quick coupler main body (100) is coupled to an upper portion of the fixed jaw (210); a fixing hook (213) formed such that the cylinder connection pin (133) is coupled inside a lower portion of the fixed jaw (210); and a second assembly hook (214) formed such that the second connection pin (132) of the quick coupler main body (100) is coupled to the lower portion of the fixed jaw (210).
4. The quick coupler connection system of claim 3, wherein the first assembly hook (212) is formed in a hook shape with a lower portion open downward, the fixing hook (213) is formed in a hook shape with an upper portion open upward, and the second assembly hook (214) is formed to be laterally open.
5. The quick coupler connection system of claim 1, further comprising keeping holes (340) formed through the left and right quick coupler bodies (110, 120) to keep the supporting pin (350) when the actuating rod (154) and the moving jaw (220) are combined.
6. The quick coupler connection system of claim 1, wherein the coupling pin (140) has a flat chamfered portion (142) on a side of an outer surface and a stopping step (143) continuing from an end of the chamfered portion (142) on another side of the outer surface of the coupling pin (140) to prevent separation out of the connection holes (226) of the connection block (225), and a chamfered surface (226a) corresponding to the chamfered portion (142) and locked to the stopping step (143) is formed on an inner surface of the connection hole (226) formed at a side of the connection block (225). January 31, 2023 27
7. The quick coupler connection system of claim 1, further comprising: fitting holes (144) formed at a first end portion and a second end portion of the coupling pin (140); a fastening block (270) integrally coupled to a side of the connection block (225), having a through-hole formed through a center for inserting and pulling out of the coupling pin (140), and having a fastening hole (275) in which a fastening bolt (290) that is fitted in the fitting hole (144) is inserted; and a driven block (280) coupling to the first end of the coupling pin (140) to move with insertion and pulling-out of the coupling pin (140) and having a fastening hole (275) in which a fastening bolt (290) that is fitted in the fitting hole is inserted.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020170173065A KR101870713B1 (en) | 2017-12-15 | 2017-12-15 | Conneting structure of quick coupler for construction machine |
PCT/KR2018/010662 WO2019117431A1 (en) | 2017-12-15 | 2018-09-12 | Quick coupler connection system for construction machine |
Publications (3)
Publication Number | Publication Date |
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IL274644A IL274644A (en) | 2020-06-30 |
IL274644B1 true IL274644B1 (en) | 2023-11-01 |
IL274644B2 IL274644B2 (en) | 2024-03-01 |
Family
ID=63250366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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IL274644A IL274644B2 (en) | 2017-12-15 | 2018-09-12 | Quick coupler connection system for construction machine |
Country Status (4)
Country | Link |
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EP (1) | EP3725953B1 (en) |
KR (1) | KR101870713B1 (en) |
IL (1) | IL274644B2 (en) |
WO (1) | WO2019117431A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102226954B1 (en) * | 2020-09-18 | 2021-03-11 | 유제록 | Automatic hydraulic connections for heavy equipment or industrial machinery and work unit automatic connections |
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KR101425075B1 (en) * | 2013-07-10 | 2014-08-04 | 대모 엔지니어링 주식회사 | Attachment quick change construction for heavy equipment |
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JP3256120B2 (en) * | 1996-01-29 | 2002-02-12 | 株式会社坂戸工作所 | Crushing machine |
JP4247222B2 (en) * | 2005-09-20 | 2009-04-02 | ヤンマー株式会社 | Excavator fixing structure of tractor loader backhoe |
KR20080098836A (en) * | 2007-05-07 | 2008-11-12 | 주식회사 에버다임 | Multipurpose attachment combine device for heavy industrial equipment |
JP4928348B2 (en) * | 2007-05-14 | 2012-05-09 | 日本車輌製造株式会社 | Connecting shaft fixing structure |
CA2590464A1 (en) * | 2007-05-30 | 2008-11-30 | Brandt Industries Ltd. | Quick coupling mechanism for tool attachment |
KR101043036B1 (en) | 2009-05-19 | 2011-06-21 | 주식회사 에버다임 | Attachment coupler for heavy machinery, ensuring a complete coupling with the attachment |
KR101254193B1 (en) * | 2011-05-02 | 2013-04-18 | 대모 엔지니어링 주식회사 | Attachment quick change construction for heavy equipment |
KR101378570B1 (en) * | 2012-04-26 | 2014-03-28 | 대모 엔지니어링 주식회사 | Attachment quick changer for backhoe |
KR101806958B1 (en) * | 2017-09-25 | 2017-12-08 | 성보공업주식회사 | A bucket tooth of excavator |
-
2017
- 2017-12-15 KR KR1020170173065A patent/KR101870713B1/en active IP Right Grant
-
2018
- 2018-09-12 WO PCT/KR2018/010662 patent/WO2019117431A1/en unknown
- 2018-09-12 IL IL274644A patent/IL274644B2/en unknown
- 2018-09-12 EP EP18887627.0A patent/EP3725953B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070189846A1 (en) * | 2006-02-01 | 2007-08-16 | Cocayne Michael J | Pad-eye pin and retainer |
KR101425075B1 (en) * | 2013-07-10 | 2014-08-04 | 대모 엔지니어링 주식회사 | Attachment quick change construction for heavy equipment |
Also Published As
Publication number | Publication date |
---|---|
IL274644B2 (en) | 2024-03-01 |
WO2019117431A1 (en) | 2019-06-20 |
EP3725953B1 (en) | 2023-06-07 |
EP3725953A4 (en) | 2021-08-18 |
IL274644A (en) | 2020-06-30 |
EP3725953A1 (en) | 2020-10-21 |
KR101870713B1 (en) | 2018-08-03 |
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