KR100945084B1 - Quick coupler for excavator - Google Patents

Quick coupler for excavator Download PDF

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Publication number
KR100945084B1
KR100945084B1 KR1020080044059A KR20080044059A KR100945084B1 KR 100945084 B1 KR100945084 B1 KR 100945084B1 KR 1020080044059 A KR1020080044059 A KR 1020080044059A KR 20080044059 A KR20080044059 A KR 20080044059A KR 100945084 B1 KR100945084 B1 KR 100945084B1
Authority
KR
South Korea
Prior art keywords
movable hook
excavator
coupled
quick coupler
pin
Prior art date
Application number
KR1020080044059A
Other languages
Korean (ko)
Other versions
KR20090118331A (en
Inventor
진 환 박
Original Assignee
강토중공업(주)
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.)
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Publication date
Application filed by 강토중공업(주) filed Critical 강토중공업(주)
Priority to KR1020080044059A priority Critical patent/KR100945084B1/en
Publication of KR20090118331A publication Critical patent/KR20090118331A/en
Application granted granted Critical
Publication of KR100945084B1 publication Critical patent/KR100945084B1/en

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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
    • E02F3/3645—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with auto-engagement means for automatic snap-on of the tool coupler part
    • 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
    • E02F3/3672—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat where disengagement is effected by a mechanical lever or handle

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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)
  • Earth Drilling (AREA)

Abstract

The present invention relates to a quick coupler for excavator for manually coupling or separating work tools according to the nature of the work is coupled to the construction, civil machinery, such as excavator.

Conventionally, the hydraulic pressure is actuated to operate the movable hook to engage or separate the work tool, but this is a means of operating the movable hook by means of a cylinder actuated by the action of hydraulic pressure. The need for a hydraulic line for supplying the device is complicated and the cost is increased. To solve this problem, a pair of coupling pins coupled to the arm of the excavator is provided on the upper side, and a lower side of the work tool is provided. In the quick coupler for excavator is provided with a fixed hook is inserted into one side of the fixing pin and the other side movable hook receiving elastic force by the elastic member to the hinge pin, the movable hook 40 is provided with a support plate spaced apart A hinge portion 41 coupled to the hinge pin 36 coupled to the 31 and 32, and the rear surface of the movable hook 40 Safety pin 37 is inserted into the side, the front side is characterized in that the locking bolt 43 is detachably fastened by penetrating the locking plate 46 to the boss 44 coupled to the front of the movable hook 40. A quick coupler for an excavator is provided.

Therefore, by operating the movable hook manually, the structure is simplified, the manufacturing is easy and the operation is assured, and the manufacturing cost is low. In particular, the coating is performed on the back and front sides of the movable hook, so that the movable hook is not detached arbitrarily. Will have

Excavator, Quick Coupler, Work Tool, Manual Type, Elastic Material, Locking

Description

Quick Coupler for Excavator

The present invention relates to a quick coupler for an excavator, and more particularly to an excavator quick coupler for easily coupling and separating the brake, crusher, bucket, etc. manually to heavy equipment such as excavators.

In general, in the construction of excavators and heavy equipment for civil engineering, work tools such as breakers, buckets, and crushers are used to dig the ground, treat the soil dug from the ground, or crush rocks. It will be replaced according to the work.

Conventionally, a device for coupling a work tool is coupled to the coupler 20 with a pair of coupling pins 11 and 12 at the tip of the arm 10 of the excavator, as shown in Figure 1, the coupler 20 The fixed hook 21 is provided on one side and the movable hook 22 is rotatably coupled to the other side, the movable hook 22 is configured to be rotated by the operation of the cylinder 23 mounted in the coupler 20. .

And the fixing hook 21 and the movable hook 22 is inserted into the fixing pins 24, 25 formed on the upper side of the working mechanism (W) to be combined.

Therefore, the coupler 20 coupled to the tip of the arm 10 is close to the upper side of the work tool (W), the fixing pin 24 is inserted into the fixing hook 21 and the other fixing pin to the movable hook 22 on the other side 25 is to be coupled, the movable hook 22 is opened and closed by the operation of the cylinder 23 is to be fixed pin 25 is coupled to the inside.

However, such a conventional technique is a means for operating the movable hook is made by a cylinder that is operated by the action of hydraulic pressure, but there is a convenience that can be coupled or detached work tools in the driver's seat, but supply the hydraulic pressure to the cylinder inside the coupler The need for a hydraulic line for this has caused problems such as complicated apparatus and increased cost.

The present invention has been invented to solve the above problems, an object of the present invention is to provide a quick coupler for excavators that is simple in structure, easy to operate, reliable operation and can reduce the manufacturing cost.

Excavator quick coupler according to the present invention for achieving the above object is provided with a pair of coupling pins coupled to the female arm of the excavator on the upper side, a fixed hook is inserted into one side fixed pin of the working mechanism on the lower side In this provided and the other side of the quick coupler coupled to the movable hook that is elastically coupled to the hinge pin by the elastic member, the movable hook includes a hinge portion coupled to the hinge pin coupled to the support plate installed at intervals And, the safety pin is inserted into the back side of the movable hook, the front side is characterized in that the locking bolt is detachably fastened through the locking plate to the boss coupled to the front of the movable hook.

According to the present invention, by operating the movable hook by manual rather than hydraulic type, the structure is simplified, the manufacturing is easy and the operation is made reliably, and the manufacturing cost is low. In particular, the coating is performed on the back and front sides of the movable hook. It has the effect of having the safety that a hook does not separate.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

2 to 5 is a view showing a quick coupler for an excavator according to an embodiment of the present invention, the quick coupler 30 is provided with a pair of support plates 31, 32 on both sides at predetermined intervals. On the upper side of the support plates 31 and 32, a pair of coupling pins 33 and 34 are coupled to the arm 10 of the excavator.

On the lower side of the support plates 31 and 32, a fixed hook 35 for engaging or separating the work mechanism W from the quick coupler 30 is formed on one side, and the movable hook rotated at a predetermined angle on the other side. 40 are coupled.

The movable hook 40 is rotated at a predetermined angle by the hinge portion 41 is coupled to the hinge pin 36 coupled to the support plates 31, 32, the operating rod 42 to the hinge portion 41 Insertion groove 41a for inserting is formed.

The locking bolt 43 is detachably fastened to the movable hook 40 so as not to be released in the locked state.

The locking bolt 43 is fastened to the boss 44 coupled to the inner surface of the movable hook 40. The locking bolt 43 is detachably fastened to one end of the boss 44, and the other end of the locking hook 43 is movable. It is coupled to the pin 45 formed laterally on the inner side of the (40).

The locking bolt 43 is supported by a locking plate 46 formed on one side of the support plates 31 and 32, and the cutting plate 46a is formed in the locking plate 46 so that the locking bolt 43 penetrates. One side is formed in an open shape.

The support plate 31, 32 is inserted into the back side of the movable hook 40, a safety pin 37 for preventing the movable hook 40 from being released randomly in the locked state.

And one side of the support plate 31, 32 is formed with a safety pin storage hole 38 for storing the safety pin 37.

The inner side of the support plate 31, 32 is provided with an elastic member 50 for applying an elastic force to the movable hook (40).

One end of the elastic member 50 is inserted into and fixed in the housing 51 fixed to the inside of the support plates 31 and 32, and the other end of the guide shaft hinged to the movable hook 36 by the hinge shaft 52. 53 is inserted outside.

Excavator quick coupler according to the present invention configured as described above is to manually combine or separate the working mechanism, which is a quick coupler 30 to the tip of the female arm 10 of the excavator as shown in Figure 5 coupling pin 33 Couple the work tool (W) in the coupled state (34).

That is, one fixing pin 24 on the upper side of the work tool W is inserted into the fixing hook 35 of the quick coupler 30 and the other fixing pin 25 is positioned inside the movable hook 40. At this time, the operation of the movable hook 40, as shown in Figure 3 when pressing the operating rod 42 in the state in which the front end of the operating rod 42 is inserted into the insertion groove (41a) of the hinge portion 41 As shown in FIG. 5, the movable hook 40 is rotated counterclockwise around the hinge pin 36.

Accordingly, the movable hook 40 is opened while the guide shaft 53 coupled to the movable hook 40 by the hinge shaft 52 and the elastic member 50 inserted into the outside of the guide shaft 53 are compressed. When releasing the force applied to the operating rod 42 while the fixing pin 25 is positioned inside the movable hook 40 opened, the movable hook 40 is moved by the elastic force of the elastic member 50. As it is rotated, the fixed pin 25 is pressed closely.

At this time, the boss 44 and the locking bolt 43 is made in a separated state.

In this way, while the fixing pins 24 and 25 are inserted into the fixing hook 35 and the movable hook 40, the safety pin 37 is coupled to the rear side of the movable hook 40 and the locking bolt 43 is provided on the front side. To combine.

That is, the boss 44 is coupled to both sides of the pin 45 in a state in which the fixing pin 25 is inserted into the movable hook 40, and the locking bolt 43 is fastened to the boss 44. In this case, the locking bolt 43 is fastened to the boss 44 by the head portion penetrates through the cutout portion 46a of the locking plate 46, the safety hook 37 is coupled to the rear side of the movable hook 40 and the front surface thereof. The locking bolt 43 is fastened to the side so that the locked state is firmly maintained.

6 and 7 are views showing another embodiment of the present invention, Figure 6 is a partial cutaway perspective view of the excavator quick coupler according to the present invention, Figure 7 is a cross-sectional view showing an operating state, one embodiment The same configuration as in the same reference numerals, and detailed description thereof will be omitted.

In one embodiment, the operating rod 42 is inserted into the insertion groove 41a formed in the hinge portion 41 of the movable hook 40 to operate the movable hook 40. However, in the present embodiment, the hinge 41 A guide groove 41b is formed in front of the guide rod 41 so as to be inserted into the tip of the operating rod 42, and a locking protrusion 47 is formed in front of the guide groove 41b.

And the upper side of the locking plate 46, through which the locking bolt 43 passes, a pair of support members 48 and 49 for supporting the operating rod 42 are coupled at predetermined intervals.

The support members 48 and 49 are preferably formed of a shaft, roller or bearing having a circular cross section.

In this embodiment, the quick coupler 30 is preferably applied to a relatively small weight such as 1 ton or 2 tons.

Therefore, in the present embodiment, when mounting the work tool W by operating the movable hook 40, the operation rod 42 is inserted between the support members 48 and 49 so that the tip of the operation rod 42 is inserted. When the front end of the operating rod 42 is rotated clockwise in the state inserted into the guide groove 41b, the front end of the operating rod 42 presses the locking protrusion 47 as shown in FIG. As a result, the movable hook 40 is rotated counterclockwise to compress the elastic member 50.

 At this time, while the fixing pin 24 of the work tool W is inserted into the fixing hook 35, the fixing pin 25 is inserted into the movable hook 40 and applied to the operating rod 42. By releasing the movable hook 40 by the elastic force of the elastic member 50 is returned to the original position around the hinge pin (36).

Subsequently, when the movable hook 40 locks the fixing pin 25, the safety pin 37 is inserted into the rear side and the locking bolt 43 is fastened to the front side, wherein the locking bolt 43 is a pin ( The locking state of the fixing pin 25 is maintained by fastening to the boss 44 coupled to both sides of the 45, so that the engagement state of the work tool W may be arbitrarily changed by external loads such as impact force before, after or during operation. To prevent it from being released.

And when releasing the work tool (W) coupled to the quick coupler (30) is carried out in the reverse order of the mounting, first, the locking bolt 43 fastened to the front side of the movable hook (40) boss ( 44) and remove the safety pin 37 on the rear side, the movable hook 40 is in an operable state. At this time, when operating the movable hook 40 using the operating rod 42, the fixing pin 25 It is possible to separate from the quick coupler (30).

The present invention as described above is not limited to the above-described specific embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various changes without departing from the gist of the present invention as claimed in the claims. will be.

The present invention will be applicable to any device for mounting or separating work tools having different functions depending on the type of work, such as construction of excavators, civil machines.

1 is a view showing a conventional quick coupler for excavators.

2 to 5 is a view showing a quick coupler for an excavator according to an embodiment of the present invention,

2 is a perspective view of a quick coupler for excavators according to the present invention;

3 is an overall cross-sectional view of the quick coupler for excavators according to the present invention,

4 is a partially cutaway perspective view of an excavator quick coupler according to the present invention;

5 is a cross-sectional view showing an operating state of the quick coupler for excavators according to the present invention.

6 and 7 is a view showing a quick coupler for excavators according to another embodiment of the present invention,

6 is a partially cutaway perspective view of an excavator quick coupler according to the present invention;

7 is an overall cross-sectional view showing an operating state of the quick coupler for excavators according to the present invention.

Explanation of symbols on the main parts of the drawings

10: arm 24, 25: holding pin

30: quick coupler 31, 32: support plate

33,34: coupling pin 35: fixed hook

36: hinge pin 37: safety pin

40: movable hook 41: hinge part

41a: insertion groove 41b: guide groove

42: operating rod 43: locking bolt

44: boss 45: pin

46: locking plate 47: locking projection

48, 49: support member 50: elastic member

51: housing 52: hinge shaft

W: Work Tool

Claims (3)

A pair of coupling pins coupled to the female arm of the excavator is provided on the upper side, and the lower one side is provided with a fixing hook into which the fixing pin of one side of the working tool is inserted, and the other side of the movable hook receiving the elastic force by the elastic member is rotated by the hinge pin. In the coupled quick coupler for excavator, The movable hook 40 includes a hinge portion 41 coupled to a hinge pin 36 coupled to the support plates 31 and 32 spaced apart from each other. The safety pin 37 is inserted into the rear side of the movable hook 40, and the locking bolt 43 penetrates the locking plate 46 through the boss 44 coupled to the front of the movable hook 40. Quick coupler for excavators, characterized in that detachably fastened. The method of claim 1, The hinge portion 41 is an excavator quick coupler, characterized in that the insertion groove 41a for inserting the operation rod 42 is formed. The method of claim 1, The hinge portion 41 is provided with a guide groove 41b into which the operating rod 42 is inserted and a locking protrusion 47, and a support member 48 for supporting the operating rod 42 at the outer inlet side thereof. Quick coupler for excavator, characterized in that 49) is provided.
KR1020080044059A 2008-05-13 2008-05-13 Quick coupler for excavator KR100945084B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080044059A KR100945084B1 (en) 2008-05-13 2008-05-13 Quick coupler for excavator

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Application Number Priority Date Filing Date Title
KR1020080044059A KR100945084B1 (en) 2008-05-13 2008-05-13 Quick coupler for excavator

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KR100945084B1 true KR100945084B1 (en) 2010-03-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200075679A (en) 2018-12-18 2020-06-26 주식회사 경원테크 Rotatign type quick coupler for excavator
KR20210055219A (en) 2019-11-07 2021-05-17 주식회사 브랜드뉴 Quick coupler with commonality for excavator
KR102629729B1 (en) 2023-09-14 2024-01-29 양계환 Rotating structure of excavator attachment

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102037474B1 (en) 2018-07-23 2019-10-28 이해선 Quick Coupler having safety device
KR20210030757A (en) 2019-09-10 2021-03-18 이해선 Quick Coupler having safety device
KR20210069486A (en) 2019-12-03 2021-06-11 이해선 Quick Coupler having safety device
CN112900517B (en) * 2021-01-27 2022-06-07 三一重机有限公司 Adjustable excavator connector and excavator
KR102451793B1 (en) 2022-07-19 2022-10-11 주식회사 세안정기 Safety device for quick coupler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11336113A (en) 1998-05-25 1999-12-07 Sumitomo Constr Mach Co Ltd End attachment mounting device for construction machine
JP2000230243A (en) 1999-02-10 2000-08-22 Marujun Juko Kk Quick coupler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11336113A (en) 1998-05-25 1999-12-07 Sumitomo Constr Mach Co Ltd End attachment mounting device for construction machine
JP2000230243A (en) 1999-02-10 2000-08-22 Marujun Juko Kk Quick coupler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200075679A (en) 2018-12-18 2020-06-26 주식회사 경원테크 Rotatign type quick coupler for excavator
KR20210055219A (en) 2019-11-07 2021-05-17 주식회사 브랜드뉴 Quick coupler with commonality for excavator
KR102629729B1 (en) 2023-09-14 2024-01-29 양계환 Rotating structure of excavator attachment

Also Published As

Publication number Publication date
KR20090118331A (en) 2009-11-18

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