KR102425356B1 - Fixed block rotation prevention device for quick coupler - Google Patents

Abstract

The present invention includes: a main body that is rotatably installed in a heavy equipment arm bar; a fixed block provided with a hydraulic line to be connected to a hydraulic pressure supplied to the main body, and installed in the main body; a restraint member coupled to the main body so as to be arranged adjacent to the fixed block; and a restraint fixing part connecting the restraint member with the fixed block to prevent the fixed block from rotating from the main body, thereby capable of preventing malfunctions in which the hydraulic pressure is not smoothly supplied due to rotation of the fixed block.

Description

Fixed block rotation prevention device for quick coupler}

The present invention relates to a device for preventing rotation of a fixed block for a quick coupler, and more particularly, a fixed block provided with a hydraulic line that is installed on a main body installed on a heavy equipment arm and can provide hydraulic pressure required to drive an attachment from the main body. By preventing rotation, it is possible to prevent the fixed block from being rotated from the main body by the rotational movement of the driving block connected to the fixed block, and it is possible to prevent the formation of a gap between the parts by the rotation of the fixed block, It relates to a fixed block rotation preventing device for a quick coupler that can prevent a malfunction in which hydraulic pressure is not smoothly supplied by the rotation of the fixed block.

In general, in heavy construction and civil engineering equipment such as excavators, work tools such as breaker, bucket, crusher, etc. are used to dig the ground, process soil excavated from the ground, crush rocks, etc. It will be replaced and used according to the contents of the work.

In the conventional device for coupling a work tool, a coupler is coupled with a pair of coupling pins to the tip of the arm of an excavator, a fixed hook is provided on one side of the coupler and a movable hook is rotatably coupled to the other side of the coupler, and the movable hook is in the coupler. It is configured to be rotated by the operation of the mounted cylinder.

And the fixing pin formed on the upper side of the work mechanism is inserted into the fixing hook and the movable hook so that the coupling is made.

Therefore, the coupler coupled to the tip of the arm is brought close to the upper side of the work tool, a fixing pin is inserted into the fixing hook, and another fixing pin is coupled to the movable hook of the other side. The fixing pin is coupled.

However, this conventional technique is a means of operating the movable hook and is made by a cylinder operated by the action of hydraulic pressure, so that it is convenient to couple or separate the work tool from the driver's seat, but supplying hydraulic pressure to the cylinder inside the coupler As a hydraulic line is required for this purpose, problems such as complexity of the device and increased cost were inherent.

To solve the above problems, a quick coupler for an excavator has been developed, and the movable hook of the quick coupler for an excavator according to the prior art includes a hinge part coupled to a hinge pin coupled to a support plate installed at a distance, and on the rear side of the movable hook A safety pin is inserted and installed, and on the front side, the locking bolt is detachably fastened to the boss coupled to the front of the movable hook through the locking plate.

Background art of the present invention is disclosed in Korean Patent Application Laid-Open No. 10-2009-0118331 (published on November 18, 2009, title of the invention: quick coupler for an excavator).

The quick coupler according to the prior art, in the case of a rotary type quick coupler having a fixed block provided with a hydraulic line and installed on the body, and a driving block rotatably installed on the fixed block and provided with a hydraulic line, rotation of the driving block When the fixed block is rotated from the main body by movement, a gap between the parts may be formed, hydraulic pressure transmitted from the fixed block to the driving block may be lost, and the rotating quick coupler may be driven for a long time while the fixed block is rotated There is a problem that the hydraulic connection part consisting of the fixed block and the driving block may be deformed or damaged.

Therefore, there is a need to improve it.

The present invention prevents a fixed block installed in a main body installed on a heavy equipment arm and provided with a hydraulic pressure line capable of providing hydraulic pressure required for driving an attachment from the main body, thereby preventing rotation of the drive block connected to the fixed block. It is possible to prevent the fixed block from rotating from the main body, it is possible to prevent a gap between the parts by the rotation of the fixed block, and it is possible to prevent malfunction in which hydraulic pressure is not supplied smoothly by the rotation of the fixed block. An object of the present invention is to provide an anti-rotation device for a fixed block for a quick coupler.

The present invention, a body rotatably installed on a heavy equipment arm; a fixing block provided with a hydraulic line so that the hydraulic pressure supplied to the main body is connected and installed on the main body; a constraining member coupled to the body so as to be disposed adjacent to the fixing block; and a restraint fixing part connecting the restraining member and the fixed block to prevent the fixed block from being rotated from the main body.

In addition, the restraint fixing portion of the present invention, a restraining groove formed in the fixing block; a constraining protrusion formed to protrude from the constraining member so as to be inserted into the constraining groove and engaged; And it is coupled to the body through the constraining member characterized in that it comprises a constraint bolt for integrally coupling the body and the constraining member.

In addition, the constraining protrusion of the present invention, a first protrusion protruding from one end of the constraining member toward the center of the fixing block; a second protrusion protruding from the other end of the constraining member toward the center of the fixing block; and a third protrusion protruding from the central portion of the restraining member toward the center of the fixing block.

In addition, the constraint groove portion of the present invention, a first groove portion formed in the fixing block so that the first projection is inserted; a second groove formed in the fixing block so that the second protrusion is inserted; and a third groove formed in the fixing block so that the third protrusion is inserted.

In addition, the constraining member of the present invention is characterized in that it is formed in a curved shape so that it can be disposed adjacent to surrounding the peripheral surface of the fixing block.

In addition, the present invention is characterized in that it further comprises a gap adjusting unit for offsetting the gap between the main body and the driving unit to prevent the driving unit from flowing from the main body by the gap formed between the main body and the driving unit.

In addition, the gap adjusting unit of the present invention, an adjustment bolt fastened to the connection plate of the main body; and a nut member that is fastened with the adjustment bolt and is in close contact with the connection plate to prevent the adjustment bolt from being rotated and moved from the connection plate by vibration transmitted by the operation of the driving unit.

In the fixing block rotation prevention device for a quick coupler according to the present invention, a constraining groove is formed on the upper portion of the fixing block exposed to the upper surface of the connection plate of the main body, and a protrusion is formed to be inserted into the constraint groove, and a restraining member coupled to the connection plate is provided. Since it is provided, the upper portion of the fixed block can be fixed and can be integrally coupled to the main body, so that the fixed block can be prevented from being rotated from the main body by the rotational movement of the driving block.

In addition, the fixed block rotation preventing device for a quick coupler according to the present invention is made of a curved shape so that the constraining member can wrap the upper part of the fixed block, and since a plurality of protrusions protrude toward the fixed block, the plurality of protrusions restrain the fixed block By seating the constraining member to be inserted into the groove and integrally coupling the constraining member to the body, it is possible to effectively prevent the fixed block from rotating differently from the designer's intention, thereby preventing malfunction and damage caused by rotating the fixed block more effectively. There is an advantage.

1 is a perspective view of a quick coupler in which a fixed block rotation prevention device according to an embodiment of the present invention is installed.
2 is a perspective view illustrating a main pin fixing device of a quick coupler to which a fixing block rotation prevention device according to an embodiment of the present invention is installed.
3 is an exploded perspective view showing the main pin fixing device of the quick coupler to which the fixing block rotation prevention device is installed according to an embodiment of the present invention.
4 is a cross-sectional view illustrating a gap adjusting unit, a main pin fixing unit, and a driving unit of a quick coupler to which a fixed block rotation prevention device according to an embodiment of the present invention is installed.
5 is a perspective view illustrating a fixed block rotation preventing unit of a quick coupler according to an embodiment of the present invention.
Figure 6 is an exploded perspective view showing the fixed block rotation preventing portion of the quick coupler according to an embodiment of the present invention.
7 is an exploded perspective view showing the hydraulic pressure supply unit of the quick coupler to which the fixed block rotation prevention device according to an embodiment of the present invention is installed.
8 is an enlarged view showing the hydraulic pressure supply unit of the quick coupler to which the fixed block rotation prevention device is installed according to an embodiment of the present invention.
9 is an exploded cross-sectional view showing the hydraulic pressure supply part of the quick coupler to which the fixed block rotation prevention device according to an embodiment of the present invention is installed.

Hereinafter, an embodiment of the fixed block rotation prevention device for a quick coupler according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators.

Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a perspective view of a quick coupler in which a fixed block rotation prevention device according to an embodiment of the present invention is installed, and FIG. 2 is a main pin fixing of the quick coupler in which a fixed block rotation prevention device according to an embodiment of the present invention is installed 3 is an exploded perspective view showing the main pin fixing device of the quick coupler to which the fixing block rotation prevention device is installed according to an embodiment of the present invention.

In addition, FIG. 4 is a cross-sectional view showing a gap adjusting part, a main pin fixing part, and a driving part of the quick coupler to which the fixed block rotation prevention device according to an embodiment of the present invention is installed, and FIG. 5 is an embodiment of the present invention. 6 is an exploded perspective view showing the fixed block rotation preventing unit of the quick coupler according to an embodiment of the present invention.

In addition, FIG. 7 is an exploded perspective view showing a hydraulic supply part of a quick coupler to which a fixed block rotation prevention device according to an embodiment of the present invention is installed, and FIG. 8 is a fixed block rotation prevention device according to an embodiment of the present invention. It is an enlarged view showing the hydraulic supply part of the quick coupler to be installed, and FIG. 9 is an exploded cross-sectional view showing the hydraulic supply part of the quick coupler in which the fixed block rotation prevention device according to an embodiment of the present invention is installed.

1 to 9 , a quick coupler according to an embodiment of the present invention is rotatably installed on a heavy equipment arm, a main body 10 having a connection plate 12, and the main body 10 rotates Connection plate 12 to provide power to be connected, various attachments are detachably connected, and the rotation block 30 having a rotation plate 32, and the rotation block 30 rotate in the forward or reverse direction. and the driving unit 34 provided between the rotating plate 32 and the hydraulic pressure supply unit 90 for supplying the hydraulic pressure supplied to the main body 10 along the arm to the rotating block 30 or the attachment, and to the main body 10 The main pin 14, which is installed so that the arm or smart tongs are rotatably connected, and the main pin 14 are prevented from idling from the main body 10 so that the main body 10 or the smart tongs are rotated due to malfunction from the arm. A fixing block (70) for restraining the fixing block (52) to prevent the main pin (14) fixing part (70) that prevents it, and the fixing block (52) of the hydraulic pressure supply part (90) from idling from the main body (10) to prevent malfunction 52) It includes a rotation preventing part (80).

Therefore, in this embodiment, the attachment can be connected to the rotating block 30 while the movable hook is driven by the hydraulic pressure supplied to the rotating block 30 through the main body 10 through the hydraulic pressure supply unit 90, and the driving unit ( As the rotation block 30 is rotated by the operation of 34), the attachment is driven so that various operations can be performed.

At this time, the attachment is driven by the hydraulic pressure transmitted to the attachment through the hydraulic connection unit 50, so that various operations such as digging the ground or carrying objects to be transported, such as soil, gravel, sand, etc. can be performed.

In addition, by driving the smart tongs connected to the main pin 14 of the main body 10, work objects of various sizes can be mounted or crushed. At this time, the smart tongs connected to the main pin 14 or the rotational movement of the arm By this, it is possible to prevent the main pin 14 from being rotated from the main body 10 by the fixing part 70 of the main pin 14 .

The fixing part 70 of the main pin 14 of this embodiment is integrally coupled to the main body 10, and a fixing piece 72 disposed to surround a portion of the main pin 14, and the fixing piece 72 A fastening piece 74 that is assembled and disposed to surround the rest of the main pin 14 and is detachably coupled to the main body 10, and the fastening piece 74 is detachably coupled to the main body 10 and a detachable part 76 .

Therefore, when fixing the main pin 14, the fixing piece 72 is inserted at an interval between the outer wall of the main body 10 and the stopper 14b of the main pin 14 to surround a portion of the circumferential surface of the main pin 14. and insert the fastening piece 74 into the gap between the outer wall of the main body 10 and the stopper 14b of the main pin 14 so as to surround the rest of the main pin 14, and the fixing piece 72 and The fastening piece 74 is assembled, the fastening piece 74 is fixed to the main body 10 by coupling the detachable part 76 to the fastening piece 74, and the fastening piece 74 is attached to the fixed piece 72 at the same time. While maintaining the assembled state, the rotational movement of the main pin 14 is restricted.

The fixing piece 72 of this embodiment is disposed with a distance from the first seating groove portion 72a into which a part of the main pin 14 is inserted, and the first seating groove portion 72a, and is disposed on the fastening piece 74. It includes a first assembling protrusion 72b to be inserted, and a first coupling step 72c provided between the first assembling protrusion 72b and the first seating groove portion 72a.

In addition, the fastening piece 74 of this embodiment is disposed at both ends of the second seating groove portion 74a into which the remaining part of the main pin 14 is inserted, and the second seating groove portion 74a, and the first coupling step 72c ) and a second assembling protrusion 74b to be seated, and a second coupling step 74c provided on the outer side of the second assembling protrusion 74b, on which the first assembling protrusion 72b is seated.

Therefore, when the fixing piece 72 is inserted into the gap between the outer wall of the main body 10 and the stopper 14b of the main pin 14 so that the fixing piece 72 is in close contact with a portion of the circumferential surface of the main pin 14, the main pin ( 14), a portion of the peripheral surface is inserted into the first seating groove portion 72a to be in close contact, and the fastening piece 74 is fastened to the outer wall of the main body 10 and the main pin 14 so as to surround the remaining portion of the peripheral surface of the main pin 14. When inserted into the gap between the stoppers 14b, the first assembly protrusion 72b is seated on the second coupling step 74c, and the second assembly protrusion 74b is seated on the first coupling step 72c while the fixing piece ( 72) and the fastening piece 74 are assembled to be connected to each other.

Thereafter, when the other end of the fastening piece 74 is coupled to the main body 10 by the detachable part 76 , the circumferential surface of the main pin 14 is all restrained by the fixing piece 72 and the fastening piece 74 . Therefore, it is possible to prevent the main pin 14 from idling from the main body 10 .

At both ends of the main pin 14, a stopper 14b that is wider than the cross-sectional area of the main pin 14 is formed, so the end of the smart tongs is rotatably installed in the gap between the outer wall of the main body 10 and the stopper 14b. , The fixing piece 72 and the fastening piece 74 are interposed in the gap between the smart tongs and the main body 10, so that the fixed piece 72 and the fastening piece 74 are assembled.

The fixing piece 72 of this embodiment is inserted into the gap between the outer wall of the main body 10 and the stopper 14b so as to surround a portion of the circumferential surface of the main pin 14, and then integrally with the outer wall of the main body 10 by welding. It is fixed, and the fastening piece 74 is inserted between the outer wall of the main body 10 and the stopper 14b so as to be assembled with the fixed piece 72 , and then the detachable part 76 is fastened to the fastening piece 74 and the main body 10 . Thus, the fastening piece 74 is integrally coupled to the main body 10 .

The detachable part 76 of this embodiment is provided on one side of the fastening piece 74 and through the fastening hole 76a through which the fastening member 76b coupled to the main body 10 penetrates, and the fastening hole 76a through the It includes a fastening member (76b) coupled to the body (10).

A second seating groove portion 74a, a second assembly protrusion 74b and a second coupling step 74c are formed at one end of the fastening piece 74, and a fastening hole portion 76a is formed at the other end of the fastening piece 74. Therefore, when the fastening member 76b is inserted into the fastening hole portion 76a and fastened to the main body 10, the fastening piece 74 is coupled to the main body 10 to determine the assembly state of the fastening piece 72 and the fastening piece 74. will keep

The fixing piece 72 and the fastening piece 74 of this embodiment, the first assembling protrusion 72b and the second assembling protrusion 74b are constrained by the first coupling step 72c and the second coupling step 74c. Since it is assembled so as to be possible, the fixed piece 72 and the fastening piece 74 can be maintained in a connected state without a separate connecting member, so that the assembly of the fixed piece 72 and the fastening piece 74 can be easily achieved, and the fixed piece 72 can be easily assembled. And it is possible to reduce the time and cost required for assembly of the fastening piece 74 .

As described above, in this embodiment, idling of the main pin 14 can be prevented by simple assembly of the fixing piece 72 and the fastening piece 74, so that the main body 10 is rotated from the arm stand or the smart tongs are It is possible to prevent the main pin 14 from idling from the main body 10 when rotating, thereby preventing malfunction and damage caused by the idling of the main pin 14 .

In addition, in this embodiment, the rotation block 30 connected to the main body 10 is rotated in the forward or reverse direction by the operation of the driving unit 34 to implement various operations, at this time being fixed to the main body 10 and , Since the fixed block 52, which serves as the rotating shaft of the rotating block 30, is provided with a fixed block 52 to prevent the main body 10 from idling from the main body 10, the rotation preventing unit 80 is provided, so that the rotational movement of the rotating block 30 is prevented. By this, it is possible to prevent malfunctions occurring while the fixing block 52 is idling.

The fixed block 52 rotation preventing unit 80 of this embodiment is provided with a hydraulic line so that the hydraulic pressure supplied to the main body 10 is connected, and the fixed block 52 installed in the main body 10 and the fixed block ( 52) to prevent the fixing block 52 from rotating from the body 10 by connecting the constraining member 82 coupled to the body 10, and the constraining member 82 and the fixing block 52 so as to be disposed adjacent to the body 10 including restraints that

The fixing block 52 of this embodiment is formed in a long cylindrical shape in the vertical direction, the cross-sectional area of the upper part is formed to be wider and is formed in a shape similar to a bolt shape, and a plurality of hydraulic hole parts 92a are formed in the upper part of the fixing block 52 . ) is formed, and a connecting member is installed in each hydraulic hole portion 92a to connect a plurality of hydraulic tubes, and the hydraulic pressure supplied through the hydraulic tube and the connecting member is a first hydraulic pressure formed in the fixing block 52 . It is supplied to the lower side of the fixed block 52 along the line 92 and provides hydraulic pressure to the driving block 54 connected to the lower portion of the fixed block 52 .

The fixing block 52 formed as described above extends downward through the connection plate 12, and the upper portion of the fixing block 52 is connected to the connection plate 12 by the restraining member 82 and the restraining fixing part. It is fixed, and the driving block 54 is rotatably inserted into the lower portion of the fixed block 52 , and the driving block 54 is coupled to the rotating plate 32 and integrally connected to the rotating block 30 .

Therefore, the hydraulic pressure supplied to the fixed block 52 is supplied to the rotating plate 32 through the driving block 54 by the hydraulic pressure supply unit 90 , and the rotating block along the supply pipe 99 connected to the rotating plate 32 . The hydraulic pressure is supplied to the attachment detachably installed in the cylinder or the rotation block 30 provided in the 30 .

As described above, the inflow is supplied along the fixed block 52 fixed to the main body 10 by the operation of the hydraulic pressure supply unit 90 and the driving block 54 installed in the rotating block 30, and the driving unit 34 ), even when the rotating block 30 and the driving block 54 are rotated around the fixed block 52 by the operation of the hydraulic pressure is supplied from the fixed block 52 through the driving block 54 and the rotating plate 32 . It is possible to proceed with the driving of the cylinder installed in the rotation block 30 and the driving of the attachment.

As described above, while the rotating block 30 is rotated in the forward or reverse direction around the fixed block 52, the fixed block 52 may be idly rotated from the main body 10. In this embodiment, the fixed block 52 ) Preventing the fixed block 52 from idling from the main body 10 by the action of the rotation preventing part 80, and the loss of hydraulic pressure due to the idling of the fixed block 52, the fixed block 52, and the connecting plate 12 ) or the rotation block 30 can be prevented from being deformed or damaged.

The restraint fixing part of this embodiment includes a restraining groove 84 formed in the fixing block 52, and a restraining protrusion 86 formed to protrude from the restraining member 82 so as to be inserted into the restraining groove 84 and engaged with the restraint member 82, It is coupled to the body 10 through the constraining member 82 and includes a constraining bolt 88 for integrally coupling the body 10 and the constraining member 82 .

Therefore, after the restraining member 82 is seated around the fixing block 52 so that the restraining protrusion 86 is inserted into the restraining groove 84 , the restraining member 82 is fixed to the connecting plate 12 with the restraining bolt 88 . When the constraint member 82 is integrally fixed to the connection plate 12, the rotational movement of the fixing block 52 is constrained, so that the fixing block 52 can be prevented from idling from the main body 10. .

The constraining protrusion 86 of this embodiment includes a first protrusion 86a protruding from one end of the constraining member 82 toward the center of the fixing block 52 , and the fixing block 52 from the other end of the constraining member 82 . It includes a second protrusion 86b protruding toward the center, and a third protrusion 86c protruding from the central portion of the restraining member 82 toward the center of the fixing block 52 .

In addition, the restraining groove portion 84 of this embodiment, the first groove portion 84a formed in the fixing block 52 so that the first projection 86a is inserted, and the fixing block 52 so that the second projection 86b is inserted. ) includes a second groove portion 84b formed in, and a third groove portion 84c formed in the fixing block 52 so that the third protrusion 86c is inserted.

As described above, a first groove portion 84a, a second groove portion 84b, and a third groove portion 84c are formed while maintaining a constant interval on the circumferential surface of the fixing block 52, and the first groove portion 84a, the first groove portion 84a, and the first groove portion 84a are formed. The restraining member 82 in which the first protrusion 86a, the second protrusion 86b, and the third protrusion 86c inserted into the second groove 84b and the third groove 84c are formed is attached to the restraining bolt 88. Since it is integrally coupled to the connection plate 12 by the fixing block 52 is coupled to the connection plate 12 in a state in which rotational motion is restricted by the restriction member 82, the fixing block 52 is removed from the body 10 It is possible to prevent idling.

In addition, in this embodiment, a plurality of constraining protrusions 86 made of the first protrusion 86a to the third protrusion 86c are each constrained groove portion 84 comprising the first groove portion 84a to the third groove portion 84c. ), so that it is possible to effectively prevent the fixing block 52 from being idle from the restraining member 82 , so that it is possible to more effectively prevent the fixing block 52 from being idle from the main body 10 .

The constraining member 82 of this embodiment is formed in a curved shape so as to surround the circumferential surface of the fixing block 52 and be disposed adjacently, so that the first formed in both ends and the center of the constraining member 82 formed in a curved shape. The protrusion 86a, the second protrusion 86b and the third protrusion 86c extend toward the center of the fixing block 52, and the first and second grooves 84a and 84b are formed in the fixing block 52. ) and the third protrusion 84c when the first protrusion 86a, the second protrusion 86b and the third protrusion 86c are inserted into the first protrusion 86a, the second protrusion 86b and the third protrusion ( 86c) is inserted to extend toward the center of the fixing block 52, so that the rotational movement of the fixing block 52 can be completely prevented.

In addition, this embodiment offsets the gap between the connecting plate 12 and the driving unit 34 so that the driving unit 34 flows from the main body 10 by the gap formed between the main body 10 and the driving unit 34 . Since the gap adjusting unit 12a to prevent It is possible to prevent the driving unit 34 from flowing from the main body 10 while offsetting the gap between the and the driving unit 34 .

The gap adjusting part 12a of this embodiment is, the adjusting bolt 12b fastened to the connecting plate 12, and the adjusting bolt 12b fastened to the connecting plate 12 and in close contact with the driving unit 34 by the operation of the It includes a nut member (12c) for preventing the adjustment bolt (12b) from being rotated and moved from the connection plate (12) by the transmitted vibration.

Therefore, when the rotary quick coupler is driven for a long time and a gap is formed between the main body 10 and the driving unit 34, the operator rotates the adjusting bolt 12b using a tool while rotating the end of the adjusting bolt 12b to the driving unit 34. Since it protrudes to the side, the control bolt 12b is positioned in the gap between the connection plate 12 and the driving unit 34 and presses the ring plate 39 of the driving unit 34, so the driving unit 34 moves forward toward the main body 10 Alternatively, the backward flow can be prevented.

As described above, in this embodiment, idling of the fixing block 52 is prevented by the restraining member 82 and the driving unit 34 is prevented from flowing toward the connecting plate 12 by the adjusting bolt 12b. As the quick coupler is driven for a long period of time, it is possible to prevent deformation or damage of the quick coupler that is generated while the fixed block 52 or the driving unit 34 flows, thereby extending the life of the quick coupler, and the time required for maintenance of the quick coupler and cost savings.

In addition, the hydraulic pressure supply unit 90 of this embodiment is provided in the fixed block 52 of the main body 10 installed on the arm of the heavy equipment, and the first hydraulic line 92 through which the hydraulic pressure passes, and the fixed block 52 . It is provided in the drive block 54 rotatably connected to the second hydraulic line 94 through which the hydraulic pressure supplied through the first hydraulic line 92 passes, and is coupled to the drive block 54, and the main body ( It is provided on the rotation plate 32 installed on the rotation block 30 rotatably connected to 10) and includes a third hydraulic line 96 through which the hydraulic pressure supplied through the second hydraulic line 94 passes. .

Accordingly, the hydraulic pressure supplied to the fixed block 52 is provided on the rotating plate 32 along the first hydraulic line 92 , the second hydraulic line 94 and the third hydraulic line 96 of the mounting protrusion 97 . Since it is supplied to the mounting hole 98 , hydraulic pressure can be provided to the supply pipe 99 connected to the attach control through the connector 99a installed in the mounting hole 98 .

Therefore, the operation of branching and installing a separate hydraulic tube from the flow path for supplying hydraulic pressure to the cylinder of the rotary block 30 along the second hydraulic line 94 is omitted, and the driving block 54 is mounted on the rotating plate 32 . It is possible to supply the hydraulic pressure supplied to the fixing block 52 to the attachment only by the installation operation.

The third hydraulic line 96 of this embodiment includes a connection hole 96a formed in a mounting groove portion of the rotation plate 32 into which the driving block 54 is inserted, and the rotation plate 32 from the connection hole 96a. It includes a horizontal line 96b branching in the lateral direction along the horizontal line 96b and a vertical line 96c bent from the horizontal line 96b and extending to the mounting protrusion 97 of the rotation plate 32 .

Therefore, when the driving block 54 is installed on the rotating plate 32, the lower end of the driving block 54 is inserted into the stepped groove portion 32a formed in the central portion of the rotating plate 32, and on the bottom surface of the driving block 54. When the connection line 94b of the formed second hydraulic line 94 is connected and disposed to communicate, the first hydraulic line 92 and the third hydraulic line 96 are connected to communicate.

The first hydraulic line 92 of this embodiment is connected to communicate with a plurality of hydraulic hole portions 92a provided on the upper portion of the fixed block 52 and the hydraulic line extending downward from the hydraulic hole portion 92a, It includes a plurality of first hydraulic grooves (92b) formed on the peripheral surface of the fixing block (52).

In addition, the second hydraulic line 94 of this embodiment has a plurality of second hydraulic grooves 94a formed on the inner wall of the driving block 54 to face the first hydraulic grooves 92b, and a second hydraulic groove ( It includes a connection line (94b) extending from the 94a) and bent downwardly extending toward the rotation plate (32).

The driving block 54 is formed in a cylindrical shape so that the lower portion of the fixing block 52 is rotatably inserted, and since a plurality of second hydraulic grooves 94a are formed in the inner wall, the fixing block 52 is installed in the driving block 54 . In this inserted state, even when the driving block 54 and the rotation block 30 are rotated, the first hydraulic line 92 and the first hydraulic groove portion 92b and the second hydraulic groove portion 94a are formed in a ring shape. 2 The hydraulic line 94 is maintained in a connected state.

Therefore, when hydraulic pressure is supplied through a plurality of hydraulic hole portions 92a formed in the fixing block 52, the first hydraulic groove portion 92b is filled, and a second hydraulic groove portion disposed opposite to the first hydraulic groove portion 92b ( Hydraulic pressure is transmitted along 94a) and supplied to the lower side along the connection line 94b, and the hydraulic pressure is transmitted to the cylinder installed in the rotation block 30 or to the attachment connected to the lower end of the rotation block 30, the attachment and the quick coupler It is possible to proceed with the detachment operation and the operation of the attachment.

A pair of connection lines 94b among the plurality of connection lines 94b formed in the driving block 54 is connected to a hydraulic tube provided at the lower end of the driving block 54 and installed inside the rotation block 30 Hydraulic pressure is provided to the cylinder, and the other pair of connection lines 94b among the connection lines 94b are connected to communicate with the connection hole 96a exposed to the upper surface of the stepped groove portion 32a of the rotation plate 32. Hydraulic pressure is supplied to the attachment along the horizontal line 96b and the vertical line 96c.

In addition, a mounting hole 98 is formed in the mounting protrusion 97 of this embodiment so that a connector 99a connecting the vertical line 96c and the supply pipe 99 is installed, and the vertical line 96c is a mounting hole 98 ), so that the connector 99a is installed in a pair of mounting hole portions 98 provided at both ends of the bottom surface of the rotary plate 32 to form a supply line and a recovery line of hydraulic pressure for driving the attachment.

As described above, the connection hole portion 96a, the horizontal line 96b and the vertical line 96c of this embodiment are provided in pairs, respectively, and the connection hole portion 96a, the horizontal line on one side and the other side of the rotation plate 32 (96b) and a vertical line (96c) are provided to form a hydraulic supply line and a return line.

Therefore, without installing a separate hydraulic tube branching from the hydraulic line supplied to the cylinder in order to supply or recover the hydraulic pressure supplied to the attachment, only the operation of coupling the drive block 54 to the rotating plate 32 is supplied to the attachment. hydraulic pressure can be provided.

Accordingly, the fixed block installed on the main body installed on the heavy equipment arm and provided with a hydraulic line capable of providing hydraulic pressure required for driving the attachment is prevented from rotating from the main body and fixed by the rotational movement of the driving block connected to the fixed block. It is possible to prevent the block from being rotated from the main body, it is possible to prevent a gap from being formed between the parts by the rotation of the fixed block, and it is possible to prevent malfunction in which hydraulic pressure is not supplied smoothly by the rotation of the fixed block. It is possible to provide a fixed block rotation prevention device for a quick coupler.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible by those of ordinary skill in the art to which the present invention pertains. will understand

In addition, although the fixed block anti-rotation device for quick couplers has been described as an example, this is only exemplary, and the anti-rotation device of the present invention may be used for products other than the fixed block anti-rotation device for quick couplers.

Therefore, the true technical protection scope of the present invention should be defined by the following claims.

10: body 12: connection plate
12a: gap adjusting part 12b: adjusting bolt
12c: nut member 14: main pin
14a: restraint groove 14b: stopper
30: rotation block 32: connection plate
34: driving unit 36: motor
37: gear shaft 38: transmission gear
39: ring plate 50: hydraulic connection part
52: fixed block 54: drive block
57: fastening bolt 70: fixed part
72: fixed piece 72a: second seating groove portion
72b: first assembly protrusion 72c: first coupling step
74: fastening piece 74a: second seating groove
74b: second assembly protrusion 74c: second coupling step
76: detachable part 76a: fastening hole part
76b: fastening member 80: rotation prevention part
82: restraint member 84: restraint groove
84a: first groove 84b: second groove
84c: third groove 86: restraint projection
86a: 1st projection 86b: 2nd projection
86c: third projection 88: restraint bolt
90: hydraulic supply 92: first hydraulic line
92a: hydraulic hole 92b: first hydraulic groove
94: second hydraulic line 94a: second hydraulic groove
94b: connection line 96: third hydraulic line
96a: connection hole 96b: horizontal line
96c: vertical line 97: mounting projection
98: mounting hole 99: supply pipe
99a : connector

Claims (7)

a body rotatably installed on a heavy equipment arm;
a fixing block provided with a hydraulic line so that the hydraulic pressure supplied to the main body is connected and installed on the main body;
a constraining member coupled to the body so as to be disposed adjacent to the fixing block; and
and a restraint fixing part connecting the restraining member and the fixed block to prevent the fixed block from rotating from the main body,
The constraint fixing unit,
a constraint groove formed in the fixing block;
a constraining protrusion formed to protrude from the constraining member so as to be inserted into the constraining groove and engaged; and
Fixing block rotation preventing device for quick couplers, characterized in that it includes a constraint bolt that penetrates through the constraint member and is coupled to the body to integrally couple the body and the constraint member.
delete According to claim 1, wherein the constraining projection,
a first protrusion protruding from one end of the constraining member toward the center of the fixing block;
a second protrusion protruding from the other end of the constraining member toward the center of the fixing block; and
Fixing block rotation preventing device for quick couplers, characterized in that it comprises a third protrusion protruding from the central portion of the restraining member toward the center of the fixing block.
The method of claim 3, wherein the constraint groove portion,
a first groove formed in the fixing block so that the first protrusion is inserted;
a second groove formed in the fixing block so that the second protrusion is inserted; and
Fixing block rotation preventing device for quick couplers, characterized in that it comprises a third groove formed in the fixing block so that the third protrusion is inserted.
4. The method of claim 3,
The constraining member is a fixing block rotation preventing device for a quick coupler, characterized in that it is formed in a curved shape so as to surround the circumferential surface of the fixing block to be disposed adjacently.
According to claim 1,
Fixed block rotation prevention for quick couplers, characterized in that it further comprises a gap adjusting part to offset the gap between the main body and the driving part to prevent the driving part from flowing from the main body by the gap formed between the main body and the driving part Device.
The method of claim 6, wherein the gap control unit,
an adjustment bolt fastened to the connection plate of the main body; and
A quick coupler, characterized in that it comprises a nut member that is fastened with the adjustment bolt and is in close contact with the connection plate to prevent the adjustment bolt from being rotated and moved from the connection plate by vibration transmitted by the operation of the driving unit. Fixed block rotation prevention device.

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