KR102597983B1 - Automatic oil quick system - Google Patents

Abstract

In the present invention, a dedicated link is coupled to the end of the arm to automatically supply power and hydraulic pressure to the attachment when coupled with the attachment, and power and hydraulic pressure are supplied to the top of the attachment when coupled with the dedicated link to control the excavator. The top base that allows the attachment to operate by a control signal transmitted from the device is combined, and when the dedicated link and the top base are combined, the hydraulic line and power line are automatically connected, allowing the operator to manually connect the attachment to the arm. An automatic oil quick system that allows omission of is disclosed.

Description

Automatic oil quick system {Automatic oil quick system}

In the present invention, a dedicated link is coupled to the end of an arm provided on an excavator, and a top base is formed on the upper surface of the attachment to be detachably coupled to the dedicated link. When the dedicated link and the top base are coupled to each other, the hydraulic line and the top base are automatically connected to each other. This relates to an automatic oil quick system that is configured to supply the excavator's power and hydraulic pressure to the attachment when the power line is connected, allowing the operator to omit the task of manually connecting the attachment to the arm.

In general, as casualties were reported when attachments hanging from quick couplers of heavy equipment, industrial machines, or work equipment were released during work, the safety issue of quick couplers for fastening attachments has emerged as an important issue in the industry.

Accordingly, the work equipment industry has begun to pay attention to safety issues from various angles, such as encouraging the use of quick couplers with safety devices. Recently, the use of quick couplers with safety devices has been legislated, making it necessary to use quick couplers with safety devices when working with work equipment. The use of couplers is recognized as an almost essential element.

Among the various types of safety quick couplers disclosed in recent years, the most common one connects a movable hook to a part of the cylinder rod or cylinder body of a hydraulic cylinder through a connecting member, and connects another part of the cylinder to a rotating key formed on the top of the fixed hook. A quick coupler is used to prevent the fastening pin of the attachment from being separated from the fixing hook by causing the rotation key to rotate and extend to the bottom of the opening formed at the top of the fixing hook when the cylinder expands and contracts. .

For example, in Korean Patent Publication No. 10-2014-0143068, “Quick coupler for heavy equipment with improved structure automatic locking device,” the cylinder rod of the hydraulic cylinder is connected to the movable hook, and a rotary key is formed on the top of the fixed hook. However, by connecting the axis of the cylinder over a part of the rotary key, when the cylinder expands and contracts, the rotary movement of the rotary key at the top of the fixing hook where the opening is formed is induced so that the end of the rotary key extends below the opening, so that the attachment The fastening pin was made so that it could be fixed.

Although the above quick coupler can safely and easily couple an attachment to the end of an excavator arm, the work of connecting the excavator's hydraulic line and power line to the attachment must be done manually by the operator, which is inconvenient and cumbersome. .

Due to the working environment of excavators, which are mainly used in construction and industrial sites, there is bound to be a large amount of foreign substances or dust due to oil content on the surface of the hydraulic connector. Therefore, when connecting a hydraulic line (hydraulic hose) to a hydraulic connector, the work of removing foreign substances from the surface of the hydraulic connector must first be carried out. Although workers wear gloves when removing foreign substances, oil and foreign substances are removed. Problems such as contamination of clothing or skin from the back also occurred.

The present invention was invented to solve the above problems. A dedicated link is coupled to the end of an arm provided on an excavator, and a top base is formed on the upper surface of the attachment to be detachably coupled to the dedicated link. When the top base is connected to each other, the hydraulic line and power line are automatically connected, allowing the operator to omit the task of manually connecting the attachment to the arm. In particular, air is sprayed from the air port provided on one side of the dedicated link, allowing the top base to The purpose is to provide an automatic oil quick system that can prevent foreign substances or dust from entering the hydraulic hose by removing foreign substances or dust from the surface of the hydraulic port provided on one side.

For the above purpose, the present invention relates to a system for automatically coupling an attachment to an arm that is hinged to the end of a boom rotatably provided on one side of an excavator, which is coupled to the end of the arm and is coupled to the attachment. a dedicated link that automatically supplies power and hydraulic pressure of the excavator to the attachment; It is formed on the upper surface of the attachment and is detachably coupled to the dedicated link, and when combined with the dedicated link, power and hydraulic pressure are supplied and the attachment is operated by a control signal transmitted from the control device of the excavator. , the dedicated link is hinged to the end of the arm, and includes an arm coupling portion provided on one side with a power supply port electrically connected to a power connector extending from the excavator, and a lower portion of the arm coupling portion, and the attachment An attachment coupling part that is detachably coupled to the dedicated link coupling part on the upper surface of the tooth, is provided to be able to slide along the horizontal direction inside the attachment coupling part by a control signal from the control device, and a hydraulic tank and hydraulic pressure provided in the excavator It includes a link plate having a plurality of first hydraulic ports connected through a hose and an air port that is connected to the compressor of the excavator and an air hose and sprays air forward, and the top base is connected to the attachment of the attachment. A dedicated link coupling portion formed on the upper surface and detachably coupled to the attachment coupling portion, a connection plate fixedly installed inside the dedicated link coupling portion and equipped with a plurality of second hydraulic ports connected to the first hydraulic port; It includes a power application port connected to the power supply port, and when the dedicated link and the top base are combined, when the link plate is slid toward the connection plate by a control signal from the control device, a first hydraulic port and a second hydraulic port, In addition, the power connection port and the power supply port are connected to each other, so that the power and hydraulic pressure of the excavator can be automatically supplied to the attachment, and the air ports are provided in a number corresponding to the number of second hydraulic ports, and each second hydraulic port It is arranged in a form facing the first hydraulic port and the second hydraulic port. Before the first hydraulic port and the second hydraulic port are connected, air is sprayed from each air port to remove foreign substances or dust on the surface of the second hydraulic port. After that, the first hydraulic port and the second hydraulic port are The port is connected to prevent foreign substances or dust from entering the hydraulic hose. An outlet through which air is discharged is formed on the front of the link plate, and the inside of the link plate is connected to communicate with the outlet. A first flow path having a predetermined diameter and a second flow path having a diameter wider than the first flow path are formed, and the air port is inserted through the rear side of the link plate and one end is connected to communicate with the second flow path. and a nipple to which the air hose is connected to the other end, a head portion of a shape corresponding to the discharge port, and extending from the rear of the head portion, and having a diameter narrower than that of the first passage, and an end of which is disposed inside the second passage. A rod made of a body portion, and wound along the outer peripheral surface of the rod inside the second flow path, one end of which is fixed to the rod and the other end of which is in close contact with the wall dividing the first flow path and the second flow path, and the rod moves forward. It includes an elastic spring that is compressed and stores elastic force when moved, and when a control signal is input from the control device, air from the compressor is injected into the second flow path through the air hose and nipple, and the rod moves forward due to the pressure of the air. As the discharge port opens, air is discharged toward the second hydraulic port, and when the control signal is released, the air supply is stopped and the rod is returned to its original position by an elastic spring, blocking the discharge port through the head part to prevent air, foreign matter, or dust. It is characterized by preventing backflow.

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In addition, in the present invention, a first fixing panel is coupled to one side of the attachment coupling portion, and a pair of transfer cylinders are embedded and installed inside the link plate at a predetermined interval, and the rod of each transfer cylinder protrudes to the rear of the link plate. is fixed to the first fixing panel, a first elastic spring is wound around the outer peripheral surface of the rod of each transfer cylinder to elastically support the link plate, and a second fixing panel is coupled to one side of the dedicated link coupling part, At least two or more support pipes are provided connecting the second fixing panel and the connection plate, and a second elastic spring is wound along the outer peripheral surface of the support pipe to elastically support the connection plate, in response to a control signal from the control device. When the link plate slides toward the connection plate and the first hydraulic port and the second hydraulic port are connected, the link plate and the connection plate are elastically pressurized by the first elastic spring and the second elastic spring to connect the first hydraulic port and the second hydraulic port. The second hydraulic port is in close contact with each other to prevent oil leakage.

In addition, in the present invention, a first grease port is installed on one side of the link plate and connected in communication with a grease tank provided in the excavator via a grease hose, and on one side of the connection plate is connected to the first grease port. The second grease port is installed, and when the link plate is slidably moved toward the connection plate, the first grease port and the second grease port are interconnected, so that the grease charged in the grease tank can be automatically supplied to the attachment. do.

In addition, in the present invention, the attachment coupling part includes a pair of link pipes whose ends are coupled to the link plate and slide back and forth along the link plate, and the front surface of the link pipe is moved forward when sliding forward along the link pipe. An arc-shaped third fixing pin seating groove is formed to tightly surround the lower outer peripheral surface of the third fixing pin provided in the dedicated link coupling portion, and a detection signal is sent to the third fixing pin seating groove when the third fixing pin is seated. It is characterized in that a third fixing pin detection sensor that outputs is installed.

In the present invention achieved as described above, after the dedicated link and the top base are coupled to each other, when the link plate is slid toward the connection plate by a control signal from the control device, the hydraulic line and the power line are automatically connected, and the power and hydraulic pressure of the excavator are automatically connected. It can be supplied to the attachment. Accordingly, the task of manually connecting the hydraulic line and the power line while the attachment is connected to the end of the arm can be omitted, providing convenience and excellent workability.

Next, in the present invention, air ports are provided on one side of the dedicated link with a number corresponding to the number of second hydraulic ports, and air is sprayed from each air port toward the opposing second hydraulic port, removing foreign substances on the surface of the second hydraulic port. After removing the dust, it can be connected to the first hydraulic port. The present invention including such an air port prevents foreign substances or dust from entering the hydraulic hose when the dedicated link and the top base are combined, and prevents the problem of the rubber O-ring mounted on the hydraulic port being damaged by foreign substances, etc. can do.

Next, in the present invention, when the control signal for discharging air from the air port is released, the rod is returned to its original position by an elastic spring and the discharge port is blocked through the head portion, thereby preventing air, foreign substances, or dust from flowing back into the air port. can be prevented.

Next, in the present invention, when the link plate is slid toward the connection plate by a control signal from the control device and the first hydraulic port and the second hydraulic port are interconnected, the link plate and the second elastic spring are connected to each other by the first elastic spring and the second elastic spring. As the connection plate is elastically pressurized, the first hydraulic port and the second hydraulic port are brought into close contact with each other, thereby preventing oil leakage. Therefore, there is a significant effect of preventing environmental pollution due to oil leakage and preventing safety accidents that may occur when connecting the hydraulic hose and power connector.

Next, in the present invention, when the link plate is slid toward the connection plate, the first copper port and the second copper port are connected to each other, and the grease in the grease tank provided in the excavator can be automatically supplied to the attachment. Through this, the work of injecting grease by connecting a separate grease injection hose to the attachment can be omitted, thereby significantly reducing work time and preventing the problem of grease being lost to the worker's skin, clothing, or soil.

Next, in the present invention, a third fixing pin detection sensor that outputs a detection signal when the third fixing pin is seated is installed on one side of the third fixing pin seating groove formed on the front of the link pipe that slides forward along the link plate. As a result, the operator can check the connection state of the attachment through whether or not a detection signal is output from inside the driver's seat of the excavator, thereby preventing safety accidents that may occur if the attachment is released during work.

Figure 1 is an illustration of an automatic oil quick system according to an embodiment of the present invention.
2 to 6 are schematic illustrations for explaining a dedicated link according to an embodiment of the present invention.
7 and 8 are illustrative diagrams for explaining a top base according to an embodiment of the present invention.
Figure 9 is a schematic illustration for explaining a power supply port and a power application port according to an embodiment of the present invention.
Figure 10 is a schematic illustration for explaining an airport according to an embodiment of the present invention.
Figures 11 to 14 are schematic illustrations to explain the process of combining a dedicated link and a top base according to a preferred embodiment of the present invention.

Hereinafter, the automatic oil quick system according to a preferred embodiment of the present invention will be described in more detail with reference to the attached drawings.

The present invention relates to a system for automatically coupling an attachment to the end of an arm provided on an excavator. In particular, when the attachment is coupled to the end of the arm, the power line and the hydraulic line are automatically connected, and the power and hydraulic pressure of the excavator are connected to the attachment. An automatic oil quick system is disclosed that can be supplied automatically, thereby eliminating the task of workers manually connecting the attachment to the arm.

In the present invention, the attachment refers to a work device that is connected to an excavator and enables tilting/rotating of the bucket, digging, compacting, stone crushing, and tongs, and can be implemented in various ways.

In Figure 1 to help understand the present invention, a tilting rotator that enables tilting and rotating of the bucket is shown as an example of an attachment, and this is only an example to help understand the present invention and does not limit the scope of the present invention. .

For the above purpose, the present invention is coupled to the end of the arm and includes a dedicated link 100 that automatically supplies power and hydraulic pressure of the excavator to the attachment when coupled with the attachment; A top base is formed on the upper surface of the attachment and is detachably coupled to the dedicated link, and when combined with the dedicated link, the power and hydraulic pressure of the excavator are automatically supplied and the attachment is operated by a control signal transmitted from the control device of the excavator. Includes (200);

2 to 6 are schematic illustrations showing a dedicated link according to a preferred embodiment of the present invention.

The dedicated link 100 includes an arm coupling portion 110, an attachment coupling portion 120 formed below the arm coupling portion, and a link plate 130 coupled to the inside of the arm attachment coupling portion.

First, the arm coupling portion 110 is hinged to the end of the arm provided in the excavator, and includes a bottom plate 111 having a predetermined area and a pair of side plates 112 formed along the longitudinal direction on both sides of the bottom plate. ) is provided, and the inside of the side plate includes a first fixing pin 113 hinged to the end of the arm, and a rotating bracket 3 whose one end is hinged to the rod of the arm cylinder 2 provided in the excavator. It includes a second fixing pin 114 that is hinged with the other end of.

A pair of hinge pieces 4 are hinged to both outer peripheral surfaces of the other end of the pivot bracket 3, and the other ends of the hinge pieces are respectively hinged to both outer peripheral surfaces of the arm to support the dedicated link.

The arm coupling portion 110 is rotated by a control signal input from a control device (eg, joystick) provided in the excavator. For example, when a control signal is input to the control device, the rod of the arm cylinder 2 is pulled out or retracted and the first fixing pin 113 is rotated up and down with the second fixing pin 114 as the rotation axis.

In addition, a power supply port 115 is provided on one side of the arm coupling portion and is electrically connected to a power connector (not shown) extending from the excavator.

The power supply port 115 is electrically connected to a power application port, which will be described later, to automatically supply power to the excavator to the attachment. The power supply port 115 penetrates the bottom plate 111 and has both ends located at the upper and lower sides of the bottom plate, respectively. It can be placed in a protruding form.

Here, the upper end of the power supply port protruding from the upper part of the base plate is connected to a power connector extending from the excavator, and the lower end of the power supply port protruding from the lower part of the base plate is drawn into the inside of the power application port and is electrically connected. It can be connected (see Figure 9).

Next, the attachment coupling portion 120 is formed in the lower part of the arm coupling portion, and is detachably coupled to the dedicated link coupling portion on the upper surface of the attachment.

In front of the attachment coupling part 120, a pair of link pipes 121 are provided, the ends of which are coupled to the link plate and slide back and forth along the link plate, and at the rear, a fourth fixing pin 213 of the dedicated link coupling part is provided. A fixing groove 122 is formed in an approximately "⊂" shape to accommodate the.

A pair of the link pipes 121 are arranged to be spaced apart at a predetermined distance along the width direction, and an arc is formed on the front surface so as to wrap around the lower half outer peripheral surface of the third fixing pin 212 of the dedicated link coupling portion when sliding forward. A third fixing pin seating groove 1211 having a shape is formed.

In addition, a third fixing pin detection sensor 1212 that outputs a detection signal when the third fixing pin is seated is installed in the third fixing pin seating groove.

The third fixing pin detection sensor 1212 may be configured as a touch sensor that outputs a detection signal when the third fixing pin is touched, or may be configured as an optical sensor or ultrasonic sensor.

Since the operator can check the attachment state through whether or not a detection signal is output from inside the excavator's driver's seat, it is possible to prevent safety accidents that may occur if the attachment is released during work.

In addition, guide grooves 123 of a predetermined length are formed in the form of long holes along the longitudinal direction on both outer peripheral surfaces of the attachment coupling portion, and a first fixing panel 124 in the shape of a substantially rectangular plate is provided between the link pipe and the fixing groove. do.

In addition, a guide block 125 is formed on one front side of the attachment coupling portion through which guide holes 1251 of a diameter corresponding to the link pipe are formed forward and backward.

The link pipe 121 is inserted to penetrate the guide hole 1251, and when the link plate 130 moves back and forth, the link pipe 121 moves stably back and forth without shaking while being guided by the guide block 125. In particular, it is possible to prevent the link pipe 121 from colliding with the third fixing pin 212 of the dedicated link coupling part due to shaking when the link plate moves forward.

Next, the link plate 130 is configured to slide back and forth along the horizontal direction within the attachment coupling portion by a control signal from a control device provided in the excavator.

The link plate 130 is made up of a vertically arranged rectangular plate-shaped base plate 1301 and protrusions 1302 formed on the front of the base plate and protruding forward on both sides of the center, respectively, when viewed from above. When viewed, the cross section is approximately " “It is formed in the shape of a ruler.

In addition, guide pins 131 fitted into the guide grooves 123 are formed to protrude outward on both outer peripheral surfaces of the link plate 130, and transfer cylinders are embedded into each protrusion.

Here, the rod 132 of the transfer cylinder protrudes backward through the link plate and is fixed to the first fixing panel 124, and when a control signal is output from the control device, it is fixed to the first fixing panel 124. The link plate 130 is slid forward or backward by the fixed rod. In FIG. 4 to aid understanding of the present invention, the body portion of the transfer cylinder is shown embedded within the link plate.

The guide pin 131 moves along the inside of the guide groove when the link plate slides forward inside the attachment coupling part, preventing the link plate from shaking, thereby ensuring the correct position of the first and second hydraulic ports, which will be described later. can be induced to be connected to each other, and through this effect, problems of wear and damage caused by incorrect contact between the first hydraulic port and the second hydraulic port can be prevented, and oil leakage can be prevented.

Additionally, a first elastic spring 133 is wound around the outer peripheral surface of the rod 132 of the transfer cylinder.

The first elastic spring 133 is compressed between the link plate 130 and the first fixing panel 124 when the link plate 130 moves rearward by a control signal from a control device (not shown), and the first elastic spring 133 is compressed between the link plate 130 and the first fixing panel 124. When the link plate moves forward by the control signal, it is restored to its original state by elastic force, elastically supporting the rear of the link plate 130, and providing force to press the link plate forward.

In addition, the link plate 130 is connected to a hydraulic tank (not shown) provided in the excavator and a first hydraulic port 134 connected via a hydraulic hose, and a compressor (not shown) of the excavator and an air hose. A connected air port 135 is provided.

The first hydraulic ports 134 are arranged in plural numbers at the front center of the link plate, and both ends penetrate the front and rear of the link plate, and the ends protruding toward the front are connected to the second hydraulic port, which will be described later. The end protruding toward the rear is connected to a hydraulic hose connected to the hydraulic tank of the excavator.

For example, as shown in Figures 5 and 6, four first hydraulic ports may be arranged in the front center of the link plate. At this time, the two first hydraulic ports may be ports for supplying working fluid to the hydraulic cylinder (or hydraulic motor) provided in the attachment, and the other two first hydraulic ports may be ports for spare lines.

Next, the air port 135 is a member connected to the air hose and sprays the air provided from the compressor forward through the front end. The air sprayed forward through the air port 135 will be described later. It is sprayed into the second hydraulic port of the top base to remove foreign substances or dust on the surface of the second hydraulic port.

The air ports 135 are preferably provided in plural numbers, and preferably, the number of air ports 135 may correspond to the number of second hydraulic ports so that air can be sprayed into each second hydraulic port. In addition, the air port 135 is preferably provided at a location adjacent to the first hydraulic port 134 (for example, at the top or bottom of the first hydraulic port) so that air can be sprayed more accurately into the second hydraulic port. .

Figure 10 is a schematic illustration to explain the principle of air being sprayed toward the second hydraulic port according to a preferred embodiment of the present invention.

First, an outlet 1303 through which air is discharged is formed on the front surface of the link plate according to the present invention, and a first flow path 1304 of a predetermined diameter connected to the outlet in communication with the inside of the link plate and the first A second flow path 1305 is formed with a diameter wider than the flow path.

Next, in the present invention, the air port 135 is inserted through the rear of the link plate, one end is connected in communication with the second flow path 1305, and the other end is a nipple 1351 to which the air hose is connected. ), a head portion (1352-1) of a shape corresponding to the discharge port, and a body portion (1352) extending from the rear of the head portion and having a narrower diameter than the first flow passage, with an end disposed inside the second flow passage. A rod 1352 made of -2) is wound along the outer peripheral surface of the rod inside the second flow path, with one end fixed to the rod and the other end in close contact with the wall dividing the first flow path and the second flow path. When the rod moves forward, it includes an elastic spring 1353 that is compressed and stores elastic force.

In the present invention as described above, when the control signal is input to the control device, the air from the compressor is introduced into the second flow path through the air hose and nipple, and the rod 1352 is moved to the front side by the pressure of the air.

Accordingly, as the head portion 1352-1 is separated from the discharge port, air is discharged through the opened discharge port 1303 and is sprayed toward the second hydraulic port. In addition, when the control signal from the control device is released and the air supply is stopped, the compressed elastic spring is restored to its original state and the rod is returned to its original position. As a result, the head blocks the discharge part to prevent backflow of air, foreign substances, or dust. can do.

Next, Figures 7 and 8 are schematic illustrations for explaining the top base 200 according to a preferred embodiment of the present invention.

The top base 200 according to the present invention includes a dedicated link coupling part 210 that is detachably coupled to the attachment coupling part, a connection plate 220 arranged to face the link plate, and a power input port 230. ) includes.

The dedicated link coupling portion 210 includes a pair of side plates 211 formed at regular intervals on the upper surface of the attachment, and a third fixing pin 212 and a fourth fixing pin 213 provided between the side plates. Includes.

Here, the third fixing pin 212 is supported in close contact with the link pipe 121 provided in front of the attachment coupling part, and the fourth fixing pin 213 is inside the fixing groove 122 at the rear of the attachment coupling part. It is accepted.

In addition, a second fixing panel 214 is vertically coupled to the ground on the outer peripheral surface of the third fixing pin through a method such as welding, and the connection plate 220 is disposed in front of the second fixing panel.

The connection plate 220 is in the form of a square or rectangular block with a corresponding width so that it can be positioned between the protrusions 1302, and when the link plate 130 is slid forward, the protrusions on both sides It is located between (1302).

A plurality of second hydraulic ports 221 connected to the first hydraulic port are provided on the front surface of the connection plate.

The second hydraulic port 221 penetrates the connection plate so that both ends protrude in front and behind the connection plate, respectively, and one end of the second hydraulic port protruding in front of the connection plate is a first hydraulic port 134. ), and the other end of the second hydraulic port protruding to the rear of the connection plate is connected to a hydraulic hose connected to a hydraulic device (eg, hydraulic cylinder, hydraulic motor, etc.) that drives the attachment.

In addition, a plurality of support pipes 222 are provided connecting the second fixing panel 214 and the connection plate 220, and the connection plate 220 is elastically supported on the outer peripheral surface of the support pipes 222. The second elastic spring 223 is wound.

The second elastic spring 223 elastically supports the rear surface of the connection plate and presses the connection rate forward.

In the present invention, when the link plate 130 is slid by a transfer cylinder and coupled to the connection plate 220, the first elastic spring 133 and the second elastic spring 223 elastically support the link plate and the connection plate. Oil leakage can be prevented by maintaining the first hydraulic port 134 and the second hydraulic port 221 in close contact with each other, thereby preventing environmental pollution.

In addition, as shown in FIG. 9, a power application port 230 electrically connected to the power supply port 115 is provided on one side of the second fixing panel 214. The power application port 230 is arranged perpendicular to the ground, the upper end is inserted into the lower part of the power supply port 115 protruding from the lower part of the bottom plate 111, and the lower end has a power connector extending from the attachment. connected.

In addition, a guide pin receiving groove 225 dug inward to a predetermined depth is formed on one side of the connection plate 220, and a guide is inserted into the guide groove 225 to a predetermined depth on the front of the link plate 130. A fin 137 is formed. When the link plate 130 slides forward, the end of the guide pin 137 is retracted into the guide pin receiving groove 225 and guides the link plate 130 to connect the first hydraulic port 134 and the first hydraulic port 134. 2Ensure that the hydraulic port (221) is connected at the correct position.

Next, the process of combining a dedicated link and a top base according to the present invention will be briefly described with reference to FIGS. 11 to 14 as follows. 11 to 14, the arm, arm cylinder, rotating bracket, rotating piece, and attachment of the excavator are omitted to facilitate understanding of the present invention, and the arm 1 is rotated by the control device so that the dedicated link 100 is connected to the top base ( The explanation will be based on the state placed at the top of 200).

First, when the rod of the arm cylinder is retracted and the rotation bracket 3 is rotated along the rod of the arm cylinder, as shown in FIG. 11, the dedicated link 100 uses the second fixing pin 114 fixed to the end of the arm as the rotation axis. Accordingly, the first fixing pin 113 is rotated upward along the rotating bracket and arranged diagonally.

Accordingly, the fixing groove 122 is shaped to face the fourth fixing pin 213, and the power supply port 115 is disposed on the upper part of the power input port 230.

Next, when the arm is lowered, the fourth fixing pin 213 is naturally retracted into the fixing groove 122, and when the rod of the arm cylinder is withdrawn, the front side of the dedicated link 100 is gradually lowered by the rotating bracket. As shown in Figure 12, it is arranged parallel to the ground, and in this process, the power supply port 115 and the power application port 230 are connected to each other, and the power of the excavator is applied to the attachment. In addition, the fourth fixing pin 213 is accommodated inside the fixing groove to prevent separation.

Next, when the transfer cylinder is driven by a control signal from the control device, the link plate 130 slides forward as shown in FIG. 13, and the connection plate 220 is positioned between the protrusions 1302 on both sides.

Next, air is sprayed from the air port 135 according to a control signal from the control device to remove foreign substances or dust from the surface of the second hydraulic port 221, and then the link plate 130 according to a control signal from the control device. When is moved to the set position, the first hydraulic port 135 and the second hydraulic port 221 are connected to each other as shown in FIG. 14, and the hydraulic pressure of the excavator is applied to the attachment.

At this time, the link plate 130 and the connection plate 220 are elastically supported by the first elastic spring 133 and the second elastic spring 223, and the first hydraulic port 135 and the second hydraulic port ( 221) is maintained in close contact, preventing oil leakage.

Conventionally, the attachment was coupled to the end of the arm, and then the hydraulic hose extending from the excavator was directly connected to a hydraulic connector provided separately on the attachment, so that the hydraulic pressure of the excavator was supplied to the attachment.

However, due to the working environment of excavators, which are mainly used in construction and industrial sites, there is bound to be a large amount of foreign substances or dust due to oil content on the surface of the hydraulic connector, so workers must directly remove foreign substances on the surface of the hydraulic connector before connecting the hydraulic hose to the hydraulic connector. Work had to be done to remove it. Although workers wear gloves when removing foreign substances, there are times when clothes or skin become contaminated with oil or foreign substances.

In the present invention, after the dedicated link and the top base are coupled to each other, when the link plate is slid toward the connection plate by a control signal from the control device, the hydraulic line and the power line are automatically connected so that the power and hydraulic pressure of the excavator are supplied to the attachment. This significantly shortens the working time, and foreign substances on the surface of the second hydraulic port can be easily removed through the air sprayed from the air port, thereby protecting the worker's clothing and skin.

Next, a first grease port 136 is installed on one side of the link plate 130 according to the present invention and is connected in communication with a grease tank provided in the excavator via a grease hose, and on one side of the connection plate A second district report port 224 connected to the first district report port is installed.

Here, the first grease port 136 penetrates the link plate, and both ends protrude to the front and rear of the link plate, respectively, and one end protruding rearward is connected to the grease hose.

In addition, the second grease port 224 is installed to penetrate the connection plate, so that one end protruding forward is connected to the first grease port 136, and the other end protruding backward is connected to the grease hose of the attachment. .

Accordingly, when the link plate 130 is slid forward, the first copper port 136 and the second copper port 224 are connected to each other, and the grease charged in the grease tank is automatically supplied to the attachment.

Meanwhile, in the present invention, the first hydraulic port 134 and the second hydraulic port 221, and the first copper port 136 and the second copper port 224 are of an appropriate shape so as to be smoothly connected while being detachably coupled to each other. , For example, it can be formed into male and female types as shown in the attached illustration. In addition, the air port 135 is preferably provided in a position corresponding to the second copper port 224 so that it is connected to the first copper port with foreign substances, dust, remaining grease, etc. on the surface of the second copper port 224 removed. do.

In general, after attaching an attachment to the end of an arm, grease that acts as a lubricant must be supplied so that the attachment can operate smoothly.

Previously, to supply grease, workers had to connect a separate grease injection hose and then manually inject grease. This conventional method had the problem of being cumbersome, inconvenient, and time-consuming because the work of connecting the grease injection hose and injecting grease was performed manually by the operator. Additionally, there was a problem with grease being lost to the worker's skin, clothing, or soil during the process of connecting or disconnecting the grease injection hose.

In the automatic oil quick system according to the present invention, when the link plate slides toward the connection plate, the first grease port 136 and the second grease port 224 are interconnected, and the grease of the excavator is automatically supplied to the attachment. Accordingly, the work of connecting the grease hose to the attachment can be omitted, thereby significantly shortening the work time and protecting the worker's skin, clothing, soil, etc. from grease.

1: Arm 2: Arm Cylinder
3: Rotating bracket 4: Hinge piece
10: Attachment
100: Dedicated link
110: arm coupling part
111: Bottom plate 112: Side plate
113: first fixing pin 114: second fixing pin
115: power supply port
120: Attachment coupling part
121: Link pipe 1211: Third fixing pin seating groove
1212: Third fixing pin detection sensor
122: fixed groove
123: Guide home
124: first fixed panel
125: Guide block 1251: Guide hole
130: link plate
1301: base plate 1302: protrusion
1303: Discharge port 1304: First flow path
1305: 2nd Euro
131: Guide pin
132: Transfer cylinder rod
133: first elastic spring
134: 1st hydraulic port
135: Airport
1351 : Nipple
1352: load
1352-1: Head part 1352-2: Body part
1353: Elastic spring
136: 1st District Report
137: Guide pin
200: Top Base
210: Dedicated link coupling part
211: side plate
212: Third fixing pin
213: Fourth fixing pin
214: second fixed panel
220: connection plate
221: Second hydraulic port
222: support pipe
223: Second elastic spring
224: District 2 Report
225: Guide pin receiving groove
230: Power input port

Claims (5)

In a system for automatically coupling an attachment to an arm hinged to the end of a boom rotatably provided on one side of an excavator,
A dedicated link 100 coupled to the end of the arm and automatically supplying power and hydraulic pressure of the excavator to the attachment when coupled with the attachment;
A top base (200) is formed on the upper surface of the attachment and is detachably coupled to the dedicated link, and when coupled to the dedicated link, power and hydraulic pressure are supplied and the attachment is operated by a control signal transmitted from the control device of the excavator. Including,
The dedicated link above is,
An arm coupling portion 110 that is hinged to an end of the arm and has a power supply port on one side that is electrically connected to a power connector extending from the excavator,
An attachment coupling portion 120 formed at a lower portion of the arm coupling portion and detachably coupled to a dedicated link coupling portion on the upper surface of the attachment,
A plurality of first hydraulic ports are provided to be able to slide along the horizontal direction inside the attachment coupling part by a control signal from the control device, and are connected via a hydraulic tank and a hydraulic hose provided in the excavator, and a compressor of the excavator. It includes a link plate 130 connected via an air hose and provided with an air port that sprays air forward,
The top base is,
A dedicated link coupling portion 210 formed on the upper surface of the attachment and detachably coupled to the attachment coupling portion,
A connection plate 220 that is fixedly installed inside the dedicated link coupling portion and on which a plurality of second hydraulic ports connected to the first hydraulic port are installed,
It includes a power application port 230 connected to the power supply port,
When the dedicated link and the top base are combined, the link plate is slid toward the connection plate by a control signal from the control device, and the first hydraulic port and the second hydraulic port, and the power connection port and power supply port are interconnected, thereby Power and hydraulic pressure can be automatically supplied to the attachment.
The air ports are provided in numbers corresponding to the number of second hydraulic ports, and are arranged to face each second hydraulic port, so that air flows from each air port before the first hydraulic port and the second hydraulic port are connected. After the foreign matter or dust on the surface of the second hydraulic port is removed by spraying, the first hydraulic port and the second hydraulic port are connected to prevent foreign matter or dust from entering the hydraulic hose.
An outlet through which air is discharged is formed at the front of the link plate,
A first flow path of a predetermined diameter connected in communication with the discharge port and a second flow path having a larger diameter than the first flow path are formed inside the link plate,
The air port is inserted through the rear of the link plate, and has one end connected in communication with the second flow path, a nipple connected to the air hose at the other end, a head portion having a shape corresponding to the discharge port, and the head. A rod consisting of a body portion extending from the rear of the portion and having a narrower diameter than the first passage, and an end of which is disposed inside the second passage, and a rod wound along the outer peripheral surface of the rod inside the second passage, with one end of the rod It is fixed to the other end and is in close contact with the wall dividing the first flow path and the second flow path, and includes an elastic spring that is compressed and stores elastic force when the rod is moved forward,
When a control signal is input from the control device, air from the compressor is injected into the second flow path through the air hose and nipple, and the rod is moved forward by the pressure of the air, opening the discharge port and discharging air toward the second hydraulic port. become,
When the control signal is released, the air supply is stopped and the rod is returned to its original position by an elastic spring, blocking the discharge port through the head part to prevent backflow of air, foreign substances, or dust.
delete According to paragraph 1,
A first fixing panel is coupled to one side of the attachment coupling portion,
A pair of transfer cylinders are installed embedded within the link plate at a predetermined interval, and the rod of each transfer cylinder protrudes to the rear of the link plate and is fixed to the first fixing panel,
A first elastic spring is wound around the outer peripheral surface of the rod of each transfer cylinder to elastically support the link plate,
A second fixing panel is coupled to one side of the dedicated link coupling portion,
At least two support pipes are provided connecting the second fixing panel and the connection plate,
A second elastic spring is wound along the outer peripheral surface of the support pipe to elastically support the connection plate,
When the link plate is slid toward the connection plate by a control signal from the control device and the first hydraulic port and the second hydraulic port are connected, the link plate and the connection plate are elastically moved by the first elastic spring and the second elastic spring. An automatic oil quick system that is pressurized so that the first hydraulic port and the second hydraulic port come into close contact with each other to prevent oil leakage.
According to paragraph 1,
A first grease port is installed on one side of the link plate and is connected in communication with a grease tank provided in the excavator via a grease hose,
A second copper port connected to the first copper port is installed on one side of the connection plate,
An automatic oil quick system, characterized in that when the link plate is slid toward the connection plate, the first grease port and the second grease port are connected to each other, so that the grease charged in the grease tank is automatically supplied to the attachment.
According to paragraph 1,
The attachment coupling portion includes a pair of link pipes whose ends are coupled to the link plate and slide back and forth along the link plate,
An arc-shaped third fixing pin seating groove is formed on the front side of the link pipe so as to come into close contact with the lower half outer peripheral surface of the third fixing pin provided on the dedicated link coupling portion when sliding forward along the link pipe,
An automatic oil quick system, characterized in that a third fixing pin detection sensor that outputs a detection signal when the third fixing pin is seated is installed in the third fixing pin seating groove.