KR101859513B1 - That are automatically chaktal for excavators that have links to a safety pin - Google Patents

That are automatically chaktal for excavators that have links to a safety pin Download PDF

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Publication number
KR101859513B1
KR101859513B1 KR1020160165820A KR20160165820A KR101859513B1 KR 101859513 B1 KR101859513 B1 KR 101859513B1 KR 1020160165820 A KR1020160165820 A KR 1020160165820A KR 20160165820 A KR20160165820 A KR 20160165820A KR 101859513 B1 KR101859513 B1 KR 101859513B1
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KR
South Korea
Prior art keywords
safety pin
pin
link
cam
housing
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Application number
KR1020160165820A
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Korean (ko)
Inventor
손용민
Original Assignee
손용민
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Priority to KR1020160165820A priority Critical patent/KR101859513B1/en
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Publication of KR101859513B1 publication Critical patent/KR101859513B1/en

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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
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24—Safety devices, e.g. for preventing overload
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/412—Excavators

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shovels (AREA)

Abstract

The present invention relates to a link for an excavator having an automatically detachable safety pin. More specifically, the present invention relates to a link for an excavator integrated with a new type of safety pin. According to the present invention, a safety pin inserted into the link can be integrated with one side or both sides of the link to maintain safety of a coupling state of attachments such as a bucket, a breaker, and a shear detachably connected to the link. Moreover, the safety pin can be integrated to be inserted into and detached from the link if necessary so that the safety pin can be prevented from being lost and easily detached and inserted. Therefore, use of a safety pin is suggested so as to prevent accidents caused due to detachment of the attachments while working.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator link having a safety pin that is automatically detached,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a link for an excavator having a safety pin that is automatically detached and detached, and more particularly, to a safety pin for automatically inserting and separating a safety pin on one side or both sides of a link, The present invention relates to a new type safety pin integrated excavator link capable of preventing safety accidents due to separation of attachments during operation by forcibly using the safety pin.

Generally, an excavator called poclain is used to remove rocks and soil on the ground at the initial stage of the foundation work for construction work. The excavator is composed of an arm composed of a plurality of joints, A bucket cylinder is connected by a link so as to be rotatable with respect to the arm and the end of the bucket cylinder and a bucket capable of pumping rock or earth is provided at the best end of the link, The hydraulic pressure is supplied from the hydraulic pressure device through the hydraulic pump, so that the gravel or the like is pushed up by using the bucket, and then the hydraulic pump is pivoted and mounted on a conveying car or is grounded.

In addition, a variety of attachments such as a breaker to break a rock or a large crate or a shear to cut a steel plate, a reinforcing bar, and an H beam can be selectively attached to the arm end link of the excavator in place of the bucket. The link is fixed to the end of the arm in order to save a lot of time, skill and personnel when exchanging such an attachment with a bucket of an excavator, The attachments are selectively attached to and detached from one end of the link to facilitate the operation and improve the efficiency

As shown in FIG. 1, the link has a pair of connecting rods 1b connected to an end of an arm at an inner upper portion of the body 1a, and a pair of connecting rods 1b connected to the attachments at a lower portion thereof. 1c and the rotation ring 1d are integrally formed and the safety pin 2 is inserted into the body (not shown) while the fixing ring 1c is inserted into the upper connecting rod 1a to prevent the spindle 1d from spontaneously rotating so that the combined state of the link 1 and the attachment can be safely maintained.

With the above-described safety pin structure, the coupling state of the attachment can be firmly maintained even when the vibration occurs during operation or when the robot collides with the floor.

In order to prevent such a problem, a majority of drivers use a wire or the like to store and store the safety pins on one side of the link, It is in use.

In addition, due to the cumbersome work of assembling the safety pins each time and detaching them in order to replace the attachments, many excavator drivers are exposed to safety accidents due to the operation without engaging the safety pins.

As described above, a work machine exchange apparatus for an excavator is disclosed in Patent Registration No. 10-031003 (registered on Sep. 12, 2001) as a conventionally known technique for making the attachment of the attachment and the arm easier and more robust,

A work machine exchange device installed on an arm tip of an excavator for easily detaching and attaching a work mechanism, comprising: a link body having a rear arm connection port formed at a central upper portion thereof;

A front connecting pin installed on a front portion of the link body and connected to a front arm end;

A hydraulic cylinder fixed to the inside of the link body by a cylinder safety pin;

And a rear connection pin installed at an end of the cylinder rod of the hydraulic cylinder.

As another conventional technique, a utility model registration No. 20-0216954 (registered on January 5, 2001)

A hydraulic device part 2 having a hydraulic cylinder 21, a fastening part 3 having an operation space 31, a fastening groove 4 connected to the fastening part 3, In the link main body (1) formed by the fixing pieces (5)

A pin engagement groove 32 having a locking protrusion 321 is formed on both sides of the operation space 31 of the coupling part 3 and a rotation groove 331 formed by fastening a bolt B to the front of the operation space 31 And the bolt B is aligned with the cylinder shaft 22 having the engagement groove 221 and is coupled by the safety pin 222 so that the attachment mechanism L is engaged with the link body 1).

However, such a conventional link structure having a safety pin function is difficult to use due to its complicated structure, and it has not been commercialized due to an increase in cost due to the addition of a configuration. In fact, by using the hydraulic pressure of an excavator itself such as an inflow cylinder, There is a problem in that it can not be operated when a failure occurs.

Therefore, it is required to develop a technique capable of preventing safety accidents such as detachment of attachments during operation by making it easy to store and use safety pins and to easily use safety pins in detachably connecting various attachments connected to excavators.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a safety pin used for preventing breakage of a hydraulic cylinder, The safety pin can be prevented from being lost or damaged and the safety pin can be tightened and separated only by a process of joining and separating the attachment to the link without any additional work by the operator. And an object of the present invention is to provide a link for an excavator having a safety pin that can be automatically detached and removed so as to prevent a safety accident caused by natural separation.

The above object of the present invention can be achieved by a pair of connecting rods 1b connected to an end portion of an arm on the upper inside of the body 1a of the link 1 and a fixing ring 1c connected to the respective attachments at a lower portion thereof, (1d) connected to the link (1f), the link (1)

The movable space portion 11 and the pin insertion hole 12 are formed so as to communicate with each other through the guide hole 14 having the protrusion 17, A housing 10 having a plurality of fastening holes 18 formed therein;

A cam 20 which is located in the moving space part 11 and is fitted in the rotating shaft 1f and has a plurality of projections 21;

A safety pin 30 inserted into the pin insertion hole 12 and having a pin 31 at one side and a handle 32 at the other side and an inclined portion 33 integrally formed between the pin 31 and the handle 32, ;

A locking part 42 which is fastened to the guide hole 14 so as to be movable in the left and right direction and which is in contact with the projection 21 of the link 20 at one side and a slanted surface 43 is formed at both sides of the fitting groove 44 at the other side A pressing member (40) integrally formed with spring seating portions (45) on both sides of which a protrusion (17) protruding from the housing (10) is seated;

And a spring (60) inserted into the spring seating portion (45) and imparting a restoring force to the pressing member (40) at an original state, characterized in that the spring .

Further comprising an opening groove (16) communicating with the moving space (11) of the housing (10) and having guide grooves (15) formed on both sides thereof,

A locking protrusion (51) movably fastened inside the opening groove (16) and having a rail (52) at both sides and a wedge (53) at the bottom;

And a control unit 50 composed of a tension unit 54 constituted by a bolt 541 having a tension fixed to the housing 10 at an upper portion of the locking protrusion 51.

The tension unit 54 includes a bolt 541 passing through the housing 10 and screwed to the upper portion of the locking protrusion 51,

And an elastic spring 542 formed on the outer side of the bolt 541 and fixed to the upper portion of the housing 10.

The safety pin member 100 is formed as a pair on both sides of the link.

As described above, according to the present invention, the safety pin for the excavator having the safety pin automatically detachable according to the present invention can prevent the safety pin from being lost by integrally fixing the safety pin inserted into the link on one side or both sides of the link, It is possible to easily use the safety pin, and it is possible to prevent the safety pin from being used due to inconvenience of loss and use, thereby preventing a safety accident.

That is, the insertion and separation of the pin are automatically and compulsively performed by the rotation of the rotation shaft connected to the rotation ring, thereby making it possible to force the use of the safety pin, thereby improving work safety. It is possible to prevent the natural pin from coming off or being fastened, and the position set by the operator can be stably maintained.

1 is a perspective view of a link for a conventional excavator;
2 is a partial side view of a link for an excavator having an automatic detachable safety pin according to the present invention
3 is a perspective view of a portion of a safety pin member in a link for an excavator having an automatic detachable safety pin according to the present invention;
4 is a partial cross-sectional perspective view of a portion of a safety pin member of a link for an excavator having an automatic detachable safety pin according to the present invention;
5 is a perspective view of a pressing member in a link for an excavator having an automatic detachable safety pin according to the present invention.
6 is a side view of a safety pin member of a link for an excavator having an automatic detachable safety pin according to the present invention,
7 is a side view of the safety pin member of the link for an excavator having an automatic detachable safety pin according to the present invention,

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a partial side view of a link for an excavator having an automatic detachable safety pin according to the present invention, and FIG. 3 is a perspective view of a safety pin member portion among links for an excavator having an automatic detachable safety pin according to the present invention. FIG. 4 is a partial cross-sectional perspective view of a safety pin member portion of a link for an excavator having an automatic detachable safety pin according to the present invention, and FIG. 5 is a cross- It is a perspective view.

As shown in the drawings, an excavator link 1 having an automatic detachable safety pin according to the present invention includes a pair of connecting rods 1b connected to an end portion of an arm at an inner upper portion of a body 1a, And the rotary hook 1d is integrally formed with the fixed hook 1c and the rotary hook 1d which are connected to the attachment ring 1. The fixing hook 1c is inserted into the upper connecting rod of the attachment and the rotary hook 3d is rotated, The safety pin member 100 is connected to the outer surface of the body 1a by the key 200 on the rotation axis 1f of the ring 1d so that the safety pin member 100 can be operated by the rotation of the rotation axis 1f do.

The safety pin member 100 includes a housing 10 which is fastened to the body 1a by bolts 200 and has a moving space 11 and a pin insertion hole 12 communicating with each other, A cam 20 which is seated in the moving space portion 11 of the rotary shaft 1f and has a plurality of projections 21 connected to the rotary shaft 1f by a key 300 at a central portion thereof, A safety pin 30 integrally formed with a pin 31 on one side and a handle 32 on the other side in a substantially conical shape and a safety pin 30 having a substantially pin 31 formed by advancing or retracting the safety pin 30 by rotation of the cam 20, And a cam 20 which is provided so as to communicate with the moving space 11 of the housing 10 and whose one side is in close contact with the cam 20, And a control unit 50 for stably controlling the rotation state.

The housing 10 is fixed to the body 1a at a position where the rotation axis 1f of the rotation ring 1d is formed and includes a moving space 11 into which the rotation axis 1f is inserted and a safety pin 30 at the other side. A plurality of fastening holes 18 are formed in the pin-insertion hole 12 and the geography.

The moving space portion 11 and the pin insertion hole 12 are connected to each other by a guide hole 14 having a guide groove 13 so that a pressing member 40 assembled to the car rear guide hole 14 As shown in FIG.

An opening groove 16 having a guide groove 15 to which the latching protrusion 51 of the control unit 50 is connected is formed at one side of the moving space unit 11.

The cam 20 has a structure in which the rotation axis 1f connected to the rotation ring 1d is connected to the key 300 so that the cam 20 rotates in accordance with the rotation of the rotation ring 1d, (21) are integrally formed.

The safety pin 30 has a pin 31 inserted into one side of the link body 1 at one side and a handle 31 having a large diameter compared to the pin 31 exposed to the outside of the housing 10 at the other side 32 are integrally formed and an inclined portion 33 is formed between the pin 31 and the handle 32 so that one side of the pressing member 40 to be described later is brought into close contact with the inclined portion 33, The safety pin 30 moves forward or backward.

The pressing member 40 is configured to allow the pin 31 to be engaged and separated substantially in accordance with the rotation of the rotation ring 1d by allowing the safety pin 30 to move forward or backward when the cam 20 rotates 5, there are provided a locking part 42 which is in contact with the outer surface of the projection 21 of the cam 20 on one side in a state in which the rails 41 are formed on both sides in the longitudinal direction, The fitting groove 44 having the inclined surface 43 into which the pin 31 portion is inserted and the spring seating portion 45 on which the spring 60 is seated are integrally formed.

The spring member 60 is formed on one side of the pressing member 40 in a state where the protrusion 17 protruding from the housing 10 is inserted into the spring seating portion 45, The process of the pressing member 40 moving to the left and right is controlled by the elasticity of the spring 60 so that the pressing member 40 has the original returnability by the spring 60. [

The engaging portion 42 of the urging member 40 and the protrusion 21 of the cam 20 are in close contact with each other by the urging force of the urging member 40 and the urging force of the spring 60 The inclined surface 43 of the pressing member 40 moves the position of the safety pin 30 outward along the inclined portion 33 of the safety pin 30 to separate the pin 31 from the link 1, 20 are continuously rotated and separated from the projection 21, the pressing member 40 is moved toward the cam 20 by the restoring force of the spring 60 and the pin 31 portion of the safety pin 30 is pressed against the pressing member The pin 31 is inserted into the link 1 to prevent the rotation of the rotation ring 1d from spontaneously rotating so that the fastened state of the attachment can be stably maintained.

The control unit 50 is configured to prevent spontaneous rotation irrespective of the operation of the rotation ring 1d of the cam 20. The control unit 50 includes a guide groove 161 formed in the opening groove 16 of the housing 10, A locking protrusion 51 formed on the upper surface of the locking protrusion 51 so as to be vertically movable with the locking protrusion 52 inserted thereinto and having a wrench 53 hooked to one side of the cam 20, And a nerve tension unit 54 that applies a tension and rotates the lower cam 20 in a state in which the lower cam 20 is in tight contact with the wiper 53.

The tension unit 54 includes a bolt 541 passing through the housing 10 and screwed to the upper portion of the locking protrusion 51 and a bolt 541 formed on the outer side of the bolt 541 and fixed to the upper portion of the housing 10 And is resiliently urged by the resilient spring 542 when the cam is rotated in the state of being in contact with the outer surface of the cam 20,

The connection of the pressing member 40 and the safety pin 30 is performed by forming a locking groove (not shown) having a predetermined length at a connecting portion between the slope portion 33 and the pin 31 of the safety pin 30, The safety pin 30 can be prevented from being detached by forming the pressing member 40 to move left and right in a state where both sides of the inclined surface 43 of the safety pin 40 are inserted in the engaging groove.

Hereinafter, the operation of the excavator link having the safety pin automatically detached and detached according to the present invention will be described in detail with reference to FIGS. 6 to 7. FIG.

6 is a side view of the safety pin member of the link for an excavator having an automatic detachable safety pin according to the present invention in a state in which the safety pin is detached. Fig. 8 is a side view of the safety pin of the link with the safety pin engaged; Fig.

6 shows a state in which the rotation ring is rotated and opened in a state where the safety pin member of the present invention is attached to one side of the link, wherein the pin portion of the safety pin is positioned inside the housing of the safety pin member, To provide a state in which it can rotate.

That is, as shown in the figure, the cam 20 connected to the rotation axis 1f of the rotation ring 1d and the pin 31 rotates together with the rotation of the rotation ring to rotate the projection 21 of the cam 20 40 and moves continuously to move the pressing member 40 in the direction of the safety pin 30.

At this time, the pin 31 of the safety pin 30 is inserted into the fitting groove 44 of the pressing member 40 and the slope part 33 is continuously advanced with the slope part 33 closely attached thereto, The safety pin 30 is separated from the link 1 so that the portion of the handle 32 of the safety pin 30 protrudes outward.

The pin 31 of the safety pin 30 does not protrude to the inside of the link 1 through this operation process so that the rotation ring 1d can be rotated smoothly without any hitching or restriction, Can be easily performed.

7 shows a state where the safety pin member of the present invention is attached to one side of the link and the rotation ring is rotated and coupled with the attachment. In this case, the pin portion of the safety pin is inserted into the link, So that the engagement state of the attachment can be stably maintained.

That is, as shown in the figure, the rotary shaft 1d is rotated in the state in which the connection shaft (not shown) of the attachment (not shown) is in close contact with the link to firmly fasten the rotary shaft of the attachment to the link. The cam 20 connected with the pin 1f and the pin 31 rotates together with the rotation of the rotation ring so that the projection 21 of the cam 20 rotates past the pressing member 40, So that the pressing member 40 moves in the direction of the cam 20.

At this time, the fitting groove 44 of the pressing member 40 fitted to the pin 31 of the safety pin 30 is separated and separated in a state in which the inclined portion 33 is in close contact with the inclined surface 43, A portion of the pin 32 of the safety pin 30 protrudes into the inside of the link 1 and is brought into close contact with the inner surface of the link 1, And is caught on the outer surface to substantially interfere with the rotation of the rotation ring.

Through this operation, the pin 31 of the safety pin 30 protrudes to the inside of the link 1 to interfere with the rotation of the rotation ring to substantially prevent the rotation of the rotation ring 1d. And the safety of the work can be ensured by firmly holding the fastened state.

According to the construction of the excavator link having the safety pin automatically detachable according to the present invention, loss and damage of the safety pin can be prevented, and even if the safety pin does not confirm whether the safety pin is engaged or disengaged, There are features that can prevent safety accidents.

Particularly, since the insertion and separation of the pin 10 are performed automatically at the same time as the separation and engagement of the link and the attachment, it is possible to prevent the natural safety pin from coming off or being fastened by the impact or vibration generated during the operation, It is possible to facilitate the use of the safety pin and to enhance the work safety.

The present invention has been described with reference to the embodiments shown in the attached drawings, but it will be understood that various modifications and other embodiments are possible for those skilled in the art.

10: housing 11: moving space part
12: pin insertion hole 13: guide groove
14: guide ball 15: guide groove
16: open groove 20: cam
21: projection 30: safety pin
31: pin 32: handle
33: inclined portion 40: pressing member
41: rail 42:
43: inclined surface 44: fitting groove
45: spring seat part 50:
51: stopper 52: rail
53: wedge 54:
60: spring 200: bolt
300: Key

Claims (4)

A pair of connecting rods 1b connected to the ends of the arms at the upper inside of the body 1a of the link 1, a fixing ring 1c connected to the respective attachments at the lower portion and a rotary ring 1b connected to the rotary shaft 1f 1d,
The movable space portion 11 and the pin insertion hole 12 are formed so as to communicate with each other through the guide hole 14 having the protrusion 17, A housing 10 having a plurality of fastening holes 18 formed therein;
A cam 20 which is located in the moving space part 11 and is fitted in the rotating shaft 1f and has a plurality of projections 21;
A safety pin 30 inserted into the pin insertion hole 12 and having a pin 31 at one side and a handle 32 at the other side and an inclined portion 33 integrally formed between the pin 31 and the handle 32, ;
A slant surface 43 is formed on both sides of the fitting groove 42 which is fastened to the guide hole 14 so as to be movable in the left and right direction and which is in contact with the projection 21 of the cam 20 at one side thereof, A pressing member (40) integrally formed with spring seating portions (45) on both sides of which a protrusion (17) protruding from the housing (10) is seated;
And a spring (60) inserted into the spring seating part (45) and imparting a restoring property to the pressing member (40).
The method according to claim 1,
Further comprising an opening groove (16) communicating with the moving space (11) of the housing (10) and having guide grooves (15) formed on both sides thereof,
A locking protrusion (51) movably fastened inside the opening groove (16) and having a rail (52) at both sides and a wedge (53) at the bottom;
And a control unit 50 composed of a tension unit 54 constituted by a bolt 541 having a tension fixed to the housing 10 at an upper portion of the locking projection 51,
The ratchet 53 is brought into close contact with the projection 21 of the cam 20 to rotate the cam 20 so that the locking projection 51 overcomes the elasticity of the tension portion and moves up and down to prevent the rotation of the cam 20 Characterized in that the safety pin has an automatically detachable safety pin.
3. The method of claim 2,
The tension unit 54 includes a bolt 541 passing through the housing 10 and screwed to the upper portion of the locking protrusion 51,
And an elastic spring (542) formed on an outer side of the bolt (541) and fixed to an upper portion of the housing (10).
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KR1020160165820A 2016-12-07 2016-12-07 That are automatically chaktal for excavators that have links to a safety pin KR101859513B1 (en)

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KR1020160165820A KR101859513B1 (en) 2016-12-07 2016-12-07 That are automatically chaktal for excavators that have links to a safety pin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160165820A KR101859513B1 (en) 2016-12-07 2016-12-07 That are automatically chaktal for excavators that have links to a safety pin

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KR101859513B1 true KR101859513B1 (en) 2018-06-27

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200251572Y1 (en) 2001-07-06 2001-11-17 최승묵 a clamp's safety device for poke-crane's bucket
KR101641664B1 (en) 2015-12-21 2016-07-21 이해선 Quick coupler having automatic safety pin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200251572Y1 (en) 2001-07-06 2001-11-17 최승묵 a clamp's safety device for poke-crane's bucket
KR101641664B1 (en) 2015-12-21 2016-07-21 이해선 Quick coupler having automatic safety pin

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