KR20210127333A - Connection structure of oil-quick for quick change - Google Patents

Abstract

The present invention relates to a connection structure of a quick-change quick coupler whose structure is improved to stably couple an oil flow path by improving the structure of the male and female hydraulic coupling devices that make up the quick-change vertical type quick coupler, and to guide the rotational motion of the quick coupler main body or the rotating housing with the quick coupler installed to reduce shock and reduce operating noise.

Description

The coupling structure of the quick change oil quick device {CONNECTION STRUCTURE OF OIL-QUICK FOR QUICK CHANGE}

The present invention relates to a coupling structure of a quick change oil quick device, and in particular, by improving the structure of the male and female hydraulic coupling devices constituting the quick change vertical type oil quick device, the oil flow path can be stably coupled, and the oil flow path can be stably coupled. It relates to a coupling structure of a quick change oil quick device whose structure is improved so as to reduce the occurrence of shock and reduce operating noise by guiding the rotational operation of the quick coupler body or the rotating housing in which the quick device is installed.

In general, heavy construction and civil engineering equipment such as excavators use work tools such as breaker, bucket, crusher, 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 coupled to the other side to be rotatable, and the movable hook is within 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 fixed 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 fixed pin is inserted into the fixed hook, and another fixed pin is coupled to the movable hook of the other side. The fixing pin is coupled.

However, in the prior art, as a means for operating the movable hook, the hydraulic pressure is supplied to the cylinder inside the coupler, although it is convenient to couple or separate the work tool from the driver's seat by using a cylinder operated by the action of hydraulic pressure. As a hydraulic line is required for this purpose, problems such as complexity of the device and increased cost were inherent.

In order 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 intervals, and on the rear side of the movable hook A safety pin is inserted and installed, and the locking bolt is detachably fastened to the front side by penetrating the locking plate to the boss coupled to the front of the movable hook.

As a prior art related to the existing rotary quick coupler, as disclosed in Korean Patent Registration No. 10-1783958 "rotational quick coupler" (registration date: 2017.09.26), it is installed on the arm of the excavator and the connecting bar and the connecting plate are A main body provided, a power transmission unit installed on the connection plate to convert and transmit the traveling direction of power, a driving unit for providing power to the power transmission unit, and a fixed hook installed in the power transmission unit and coupled to the attachment A rotation block provided with, a movable hook rotatably installed on the rotation shaft of the rotation block, a driving cylinder installed on the rotation block and rotating the movable hook to engage and engage the attachment, the power transmission unit and the rotation block It includes an anti-wear part for preventing the friction, and a buffer part provided on the main body to prevent the gap between the main body and the power transmission unit and the distance between the main body and the rotating block from being spaced apart, the The power transmission unit includes a gear member installed on the connection plate, and a gear shaft geared to the gear member to transmit the power of the driving unit to the gear member.

The wear preventing unit includes a protrusion protruding from the rotating plate and supporting the gear member, and a slip member installed on the protrusion and preventing the protrusion and the gear member from contacting the protrusion and the gear member is slidably supported.

The slip member is made of a ceramic material or synthetic resin material capable of preventing wear due to friction, and is coupled to the upper surface of the protrusion to support the lower surface of the gear member to slip.

However, the existing quick coupler device forms a flow path using a hydraulic coupling block without a hydraulic hose between the quick coupler body and the rotating housing, or between the quick coupler body and the adapter body, and the rotating housing and the adapter body. As a prior art for the prior art, as disclosed in Japanese Patent Application Laid-Open No. 2009-537711 "Quick Exchange Device" (published on October 29, 2009), a quick coupler mounted on the machine tool side, and a lock coupled to the quick coupler and a mechanism A quick change device having an adapter connected to the , and a hydraulic coupling for establishing a hydraulic connection between a hydraulic system in the machine tool and a hydraulic system of the corresponding mechanism, wherein the hydraulic coupling includes a first coupling member and a second couple These two coupling members consisting of a ring member are held together in an operative position and the first coupling member and the second coupling member cooperating with at least a mechanical retaining means formed separately from the locking device of the quick change device. There is a quick changer characterized in that in the quick changer a corresponding coupling member is held in an actuated position by frictional engagement by a corresponding mechanical retaining means.

By the way, in the existing oil quick device, connection holes for forming oil passages corresponding to each other are formed in the hydraulic coupling blocks corresponding to each other.

The hydraulic coupling block in which the connection hole is formed interconnects the quick coupler body and the rotating housing, or the rotating housing and the adapter body, or, when the rotating housing is omitted, hydraulic pressure in the process of directly connecting the quick coupler body and the adapter body A horizontal type and a vertical type of connection means are provided according to the movement method for connecting the coupling blocks.

In the case of the existing hydraulic coupling block, there is an advantage that the first and second coupling blocks can be firmly maintained in surface contact with each other by a hook-type mechanical retaining means, but the first and second When coupling or separating the coupling block, there is a fear that the locking coupling and separation operation may not be performed normally, and the operating noise is reduced by the impact generated from the mechanical holding means during the coupling and separation of the first and second coupling blocks. There was a risk of damage as it grew larger and repeated impacts were accumulated in a specific area.

Korean Patent Registration No. 10-1783958 "Rotating Quick Coupler" (Registration Date: 2017.09.26) Japanese Patent Laid-Open Publication No. 2009-537711 "Quick Exchange Device" (published on October 29, 2009)

The present invention was created in view of the above-mentioned problems, and its purpose is to improve the structure of the male and female hydraulic coupling devices constituting the quick change vertical type oil quick device to stably couple the oil flow path. To provide a coupling structure of a quick change oil quick device whose structure is improved so as to reduce the occurrence of shock and reduce operating noise by guiding the rotational operation of the quick coupler body or rotating housing installed with the oil quick device. have.

The present invention for achieving the above object is connected to the excavator and a quick coupler body provided with a first coupling block on one side lower portion; A second coupling block disposed on the lower side of the quick coupler body and coupled to the first coupling block while in surface contact with the first coupling block when the quick coupler body is rotated is provided on one upper side to selectively connect the oil flow path, one lower side a rotating housing provided with a third coupling block having a connecting hole in the downward direction; A fourth coupling block disposed on the lower side of the rotating housing and coupled to the third coupling block when the rotating housing is rotated on one upper side to selectively connect an oil flow path is provided, and an attachment is coupled to the lower portion an adapter body; The lower surfaces of the first and third coupling blocks are formed to have a first inclined surface, and the upper surfaces of the second and fourth coupling blocks are formed with a second inclined surface having an inclination angle symmetrical to the first inclined surface. do it with

The height of the left edge of the first inclined surface is higher than the height of the right edge so as to incline upward from left to right, and the height of the right edge of the second inclined surface is the height of the left edge so that it inclines upward from left to right. formed higher.

A first stepped portion stepped in an arc shape on the outside of the rotating housing, and stepped to correspond to each other on the inside of the adapter body, and corresponding to the rotation path of the rotating housing to guide the rotational operation of the rotating housing It will further include a second stepped portion formed in an arc shape.

Another characteristic element of the present invention is a quick coupler body connected to the excavator and provided with a first coupling block in the lower portion of one side; an adapter body disposed on a lower side of the quick coupler body and provided with a fourth coupling block coupled to the first coupling block on one side to selectively connect an oil flow path and an attachment coupled thereto; The lower surface of the first coupling block is formed to have a first inclined surface inclined upward from the left to the right, and the upper surface of the fourth coupling block is formed with a second inclined surface having an inclination angle symmetrical to the first inclined surface. characterized in that

A first stepped portion stepped in an arc shape on the outside of the quick coupler body, the step is stepped to correspond to each other on the inside of the adapter body, and a rotation path of the quick coupler body to guide the rotational operation of the quick coupler body It will further include a second stepped portion formed in an arc shape.

The present invention covers the inlet of the connection hole of the first and third coupling blocks so that the opening and closing operation of the cover member for blocking foreign substances is linked with the rotational operation of the quick coupler body and the rotating housing, thereby providing a function of blocking external foreign substances in ordinary times. In addition to being able to perform, it is possible to automatically open the cover part without the need for the operator to open the cover member during the coupling operation, thereby having a useful effect that can improve the convenience of the operator.

The present invention has a useful advantage that the opening and closing operation of the cover member is made by a simple operation in which the connecting rod and the locking protrusion interfere during the forward rotation operation of each of the quick coupler body and the rotating housing, so maintenance is easy and manufacturing cost can be reduced. .

In addition, as the cushion member is further provided on one side of the connecting rod of the present invention, it is possible to reduce the contact impact with the locking protrusion and to reduce the operating noise generated during the opening operation of the cover member.

1 is an external perspective view showing a quick change equipment to which a coupling structure for a quick change oil quick device according to the present invention is applied.
Figure 2 is a front view schematically showing the exploded state of Figure 1;
Figure 3 is a perspective view showing the first and second stepped parts of the present invention.
Figure 4 is a bottom perspective view showing a state before the coupling of the first and third coupling blocks and the second and fourth coupling blocks of the present invention.
5 is a cross-sectional view showing the coupling state of the first and third coupling blocks and the second and fourth coupling blocks of the present invention.
6 is a view showing another embodiment of a coupling structure for a quick change oil quick device according to the present invention.

In describing the present invention, if it is determined that a detailed description of a related known technology or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. And the terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of the user. Therefore, the definition should be made based on the content throughout this specification. In addition, 'including' a certain component means that other components may be further included, rather than excluding other components, unless otherwise stated.

An embodiment of a coupling structure for a quick change oil quick device according to the present invention will be described with reference to FIGS. 1 to 5 , the quick coupler body 100 connected to the excavator and provided with the first coupling block 410 in the lower part of one side )Wow; A second that is disposed on the lower side of the quick coupler body 100 and is coupled while surface contacting the first coupling block 410 when the quick coupler body 100 is rotated on one upper side to selectively connect the oil flow path A rotating housing 200 provided with a coupling block 420 and provided with a third coupling block 430 having a connection hole 405 opened in a downward direction at one lower portion thereof; A fourth coupling block disposed under the rotating housing 200 and coupled to the third coupling block 430 when the rotating housing 200 is rotated on one upper side to selectively connect an oil flow path an adapter body 300 provided with 440 and an attachment coupled thereto; Lower surfaces of the first and third coupling blocks 410 and 430 are formed to have an inclined first inclined surface 510 , and upper surfaces of the second and fourth coupling blocks 420 and 440 are formed to have the first inclined surface 510 . and a second inclined surface 520 having a symmetrical inclination angle is formed.

1 and 2, the quick coupler body 100 is provided with a fixed hook formed on the other side and a movable hook that is operated forward and backward by a cylinder on one side.

The rotating housing 200 has an outer ring member (not shown) that is coupled to the outside so that the driving motor of the driving unit is accommodated and is interlocked and rotated by the driving rotation force of the driving unit, and the outer ring member is supported inside the outer ring member. An inner ring member (not shown) is provided.

That is, the rotating housing 200 is opened up and down, and the inner ring member and the outer ring member are accommodated therein.

The inner ring member is bolted to the rotating housing 200 .

The first coupling block 410 is disposed on one side of the lower portion of the quick coupler body 100, and has a structure in which a bent connection hole 405 is formed to supply oil delivered from the excavator.

The second coupling block 420 is disposed on one side of the upper portion of the rotating housing 200 , and a bent connection hole 405 is formed therein to supply oil transferred from the quick coupler body 100 . has

The third coupling block 430 is disposed on one side of the lower portion of the rotating housing 200 , and is bent so as to supply the oil delivered from the quick coupler body 100 therein to the adapter body 300 side. It has a structure in which the ball 405 is formed.

The fourth coupling block 440 is disposed on one side of the adapter body 300 .

The first inclined surface 510 formed on the lower side of the first and third coupling blocks 410 and 430 has the height of the left edge of the right edge so as to be inclined upward from the left to the right in the drawing, as shown in FIGS. 2 and 3 . It is formed higher than the height (h1>h2), and the second inclined surface 520 formed on the upper side of the second and fourth coupling blocks 4220 and 440 has a height of the right edge so as to be inclined upward from the left to the right. It is formed higher than the height of the left edge (h3<h4).

Referring to FIG. 5 , the first inclined surface 510 of the first coupling block 410 is seated on the second inclined surface 520 of the second coupling block 420 and coupled to be in surface contact, The first inclined surface 510 of the third coupling block 430 is seated on the upper side of the second inclined surface 520 of the fourth coupling block and has a structure in which surface contact is made.

The surface contact of the first inclined surface 510 and the second inclined surface 520 is formed and coupled to have a symmetrical inclination angle as described above, so that the formability is improved and the flow path can be stably connected. have

For this reason, the hydraulic pressure of the oil supplied from the excavator is rotated through the quick coupler body 100 while the first coupling block 410 and the connection hole 405 of the second coupling block 420 are in surface contact to communicate with each other. It forms a flow path that is transmitted to the inside of the housing 200 .

On the other hand, when the rotating housing 200 and the adapter body 300 are combined, the first inclined surface 510 of the third coupling block 430 is the second inclined surface 520 of the fourth coupling block 440 . ) As it is seated on the upper side and coupled to be in surface contact, the oil pressure of the oil supplied from the rotating housing 200 is in surface contact with the connection holes 405 of the third and fourth coupling blocks 430 and 440 to communicate with each other. (300) to form a flow path that is transmitted to the side.

Referring to FIG. 3, the present invention provides a first stepped portion 610 stepped in an arc shape on the outside of the quick coupler body 100 or the rotating housing 200, and the rotating housing 200 or the The second stepped portion ( 620) is further provided.

When the rotating housing 200 is rotated, the rotating housing 200 enters the inside of the adapter body and rotates, and the first stepped portion 610 formed on the outside of the rotating housing 200 is As it is guided by the second stepped portion 620 formed to protrude from the inside of the adapter body, it is possible to guide and support the rotational operation of the rotating housing 200, thereby achieving a smooth quick change operation.

Accordingly, when connecting the quick coupler body 100 and the rotating housing 200 and each connecting operation of the rotating housing 200 and the adapter body 300, the hydraulic coupling block is not connected through a hydraulic hose. Since the flow path can be formed by a coupling method, it has the advantage of quickly changing the attachment quickly.

Here, the rotating housing 200 and the adapter body have been described as an example, but the first stepped portion 610 is formed on the outside of the quick coupler body 100 , and the second step is inside the rotating housing 200 . A jaw portion 620 may be formed.

Unexplained reference numerals "810" and "820" indicate a tilting cylinder that tilts and rotates the lower part of the rotator housing left and right.

Therefore, the present invention provides a first of the first and third coupling blocks 410 and 430 during the forward rotation operation of the quick coupler body 100 and the rotating housing 200 and the rotation operation between the rotating housing 200 and the adapter body. The inclined surface 510 is seated on the upper side of the second inclined surface 520 of the second and fourth coupling blocks 420 and 440, and the connection hole ( 405) is formed so that the formability of the first and second inclined surfaces 510 and 520 (contact surfaces) is improved, so that the oil passage can be stably connected, and the hydraulic coupling connection can be stably performed without a separate mechanical maintenance means. Therefore, it is easy to maintain and has a useful advantage of reducing the manufacturing cost.

In addition, since the first and second step portions 610 and 620 corresponding to the outside and the inside of each quick change component of the present invention are formed in an arc shape, a forward rotation operation of the quick coupler body 100 or the rotating housing 200 It has the advantage of reducing operating noise and improving stability by being able to guide it to rotate stably along a forward path.

6 is a view showing another embodiment of a coupling structure for a quick change oil quick device of the present invention, in another embodiment of the present invention, the rotating housing 200 is omitted, and the quick coupler body ( 100) and the adapter body 300 are directly connected, and a first inclined surface formed under the first coupling block 410 while the first coupling block 410 and the fourth coupling block 440 are coupled. As the 510) surface-contacts the second inclined surface 520 of the fourth coupling block 440, the first inclined surface 510 of the first coupling block 410 is the fourth coupling block 440. It has a structure coupled to surface contact while seated on the upper side of the second inclined surface 520 of the .

Since the surface contact of the first inclined surface 510 and the second inclined surface 520 is formed and coupled to have a symmetrical inclination angle to each other as described above, the formability of the first and fourth coupling blocks 410 and 440 is improved. It has the advantage of stably connecting the flow path.

For this reason, while the first coupling block 410 and the connecting hole 405 of the fourth coupling block 440 are in surface contact to communicate, the hydraulic pressure of the oil supplied from the excavator is transferred through the quick coupler body 100 to the adapter. A flow path to be transferred to the body 300 is formed.

In this case, the first stepped portion 610 protruding in an arc shape on the outside of the quick coupler body 100 and the first stepped portion 610 on the inside of the adapter body 300 and the stepped portion to correspond to each other. and a second stepped portion 620 formed in an arc shape corresponding to the rotation path of the quick coupler body 100 to guide the rotational operation of the quick coupler body 100.

Therefore, in another embodiment of the present invention, since the hydraulic coupling connection between the quick coupler body 100 and the adapter body 300 is performed in a state where the rotating housing 200 of the above-described embodiment is omitted, other quick Not only can it be applied to change equipment, but also the quick change flow path connection can be stably performed using the first and second inclined surfaces 510 and 520 and the first and second stepped portions 610 and 620, and the quick change components rotate in the forward direction. By being able to guide and support the operation so that the operation is performed stably, it is possible to improve the durability of the parts and to reduce the operation noise.

As such, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the above-described embodiment, but should be defined by the claims and equivalents as well as the claims to be described later.

That is, the present invention described as described above is not limited to the specific preferred embodiments described above, and anyone with ordinary skill in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims Of course, various modifications are possible, and such modifications are within the scope of the claims.

100: quick coupler body 200: rotator housing
300: adapter body 405: connection hole
410,420,430,440: first, second, third, and fourth coupling blocks
510: first inclined surface 520: second inclined surface
610: first stepped portion 620: second stepped portion
810,820: tilting cylinder

Claims (5)

A quick coupler body 100 connected to the excavator and provided with a first coupling block 410 at one lower portion thereof;
A second disposed on the lower side of the quick coupler body 100 and coupled while surface contacting the first coupling block 410 when the quick coupler body 100 is rotated on one upper side to selectively connect the oil flow path A rotating housing 200 provided with a coupling block 420 and provided with a third coupling block 430 having a connection hole 405 opened in a downward direction at one lower portion thereof;
A fourth coupling block disposed under the rotating housing 200 and coupled to the third coupling block 430 when the rotating housing 200 is rotated on one upper side to selectively connect an oil flow path an adapter body 300 provided with 440 and an attachment coupled thereto;
The lower surfaces of the first and third coupling blocks 410 and 430 are formed to have an inclined first inclined surface 510,
The coupling structure of the quick change oil quick device, characterized in that the upper surface of the second and fourth coupling blocks (420,440) is formed with a second inclined surface (520) having an inclination angle symmetrical to the first inclined surface (510). The method according to claim 1,
The first inclined surface 510 is formed so that the height of the left edge is higher than the height of the right edge so as to be inclined upward from the left to the right, and the second inclined surface 520 is the right edge of the right edge so that it is inclined upward from the left to the right. A coupling structure of a quick change oil quick device, characterized in that the height is formed higher than the height of the left edge. The method according to claim 1,
A first stepped portion 610 stepped in an arc shape on the outside of the rotating housing 200,
The second stepped portion ( 620), the coupling structure of the quick change oil quick device, characterized in that it further comprises. A quick coupler body 100 connected to the excavator and provided with a first coupling block 410 at one lower portion thereof;
A fourth coupling block 440 disposed on the lower side of the quick coupler body 100 and coupled to the first coupling block 410 on one side to selectively connect the oil flow path is provided, and the attachment is coupled to the lower side. an adapter body 300 that becomes;
The lower surface of the first coupling block 410 is formed to have a first inclined surface 510 inclined upward from the left to the right,
The coupling structure of the quick change oil quick device, characterized in that the upper surface of the fourth coupling block (440) is formed with a second inclined surface (520) having an inclination angle symmetrical to the first inclined surface (510). 5. The method according to claim 4,
A first stepped portion 610 stepped in an arc shape on the outside of the quick coupler body 100,
It is stepped to correspond to the first stepped portion 610 on the inside of the adapter body, and has an arc shape corresponding to the rotation path of the quick coupler body 100 to guide the rotational operation of the quick coupler body 100 . The coupling structure of the quick change oil quick device, characterized in that it further comprises a formed second stepped portion (620).

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