KR20240066643A - Coupling device of work tools for excavator - Google Patents

Abstract

The present invention is a one-touch type that can connect and disconnect the work machine, and the hydraulic connection is made automatically, so the operator does not have to leave the driver's seat, thereby increasing efficiency and ensuring safety;
A main body link frame connected to the end of the boom of the excavator and a hinge pin;
Rotating means installed inside the main body link frame to rotate the work tool connected below the main body link frame in the forward and reverse directions;
A work machine connection means installed below the main body link frame to connect the work machine to the work machine;
Including a main body connection means installed on the upper part of the work machine and connected to the work machine connection means;
It is characterized by allowing the main body link frame and the work machine to be connected with a one-touch type.

Description

Worker coupling device for excavator {COUPLING DEVICE OF WORK TOOLS FOR EXCAVATOR}

The present invention relates to a work machine connection device for an excavator, and more specifically, to enable the connection and operation of a work machine that is connected to the boom of an excavator and operated hydraulically by one-touch operation, thereby increasing the efficiency of detachment and attachment work of the work machine. This relates to the provision of an improved work machine connection device for an excavator.

An excavator is a construction machine that performs tasks such as excavation work to dig up the ground, loading work to transport earth and sand, crushing work to dismantle buildings, and grading work to clear the ground at civil engineering, architecture, and construction sites. It is a driving device that moves the equipment. It refers to an excavator consisting of an upper rotating body that is mounted on a sieve and a traveling body and rotates 360 degrees, and a work device.

The excavator as described above performs the necessary work by connecting a work tool to the end of a boom that is connected to the main body and operates by rotating and folding, and various types of work tools mounted on the boom are used, such as buckets, rock drills, and tongs.

Various types of connecting devices for connecting work machines to excavators as described above have been developed and used in the past, and the contents of these prior technologies are examined through patent documents as follows.

Patent Document 1 is a hook that is attachable and detachable to the end of the boom of a mini excavator, and has a fixed hook part formed on one side of the lower part, and a movable tong part rotatably provided to correspond to the fixed hook part on the other side of the lower part. main body; and

A hydraulic motor is installed on the upper part of the hook body via a motor shaft, and a rotation gear for rotating the movable tongs is provided on the motor shaft.

Patent Document 2 includes a boom connection part 100 to which a boom member is connected and a rotation link part for rotating a tong attached downwardly coupled to the bottom of the boom connection part 100,

The boom connection part 100 is formed horizontally between a pair of vertical plates 104 having a boom connection hole 102 and the pair of vertical plates 104, and connects a control line to the drive unit through the rotation link part. It includes a horizontal plate 110 on which a connection hole 112 is formed,

The rotating link part:

A cover case 210 coupled and fixed to the lower surface of the horizontal plate 110 of the boom connection part;

A fixing member 222 fixed to the inner lower surface of the cover case 210;

a rotating member 224 rotatably coupled to a bearing outside the fixing member 222 within the cover case 210;

A driving gear unit 250 engaged with the outer surface of the rotating member 224;

A lower cover 230 coupled to the lower surface of the rotating member 224; and

an internal barrel member 310 that is vertically coupled to the lower cover 230 and is installed to be in close contact with the inner surface of the fixing member 222;

It is characterized by including.

Patent Application No. 10 - 2021 - 0006273 Patent Registration No. 10 - 1941821 - 0000

doesn't exist.

Among the above prior arts, in the case of Patent Document 1, a hook body equipped with a fixed hook part, a movable tong part, and a hydraulic motor is easily installed in a mini excavator through a simplified structure to form a single tong, and the patent In the case of Document 2, it is about improving the torsional strength to improve durability weakening due to wear of the bearing between the fixed part and the rotating part due to torsion between the boom connection part and the rotating link part.

Various types of work machines applied to excavators are used. Among these work machines, they are classified into work machines that require hydraulic pressure and work machines that do not require hydraulic pressure. In the case of general work machines that do not require hydraulic pressure, they are combined using a hanging hook and then used. You can do this, but in the case of a work machine that requires hydraulic pressure, you must connect the hydraulic pressure separately after connecting the work machine.

Conventionally, when a workpiece requiring hydraulic pressure is connected while the operator is seated in the driver's seat of the excavator, another worker connects the hydraulic pressure from the outside, or the operator comes out of the driver's seat and connects the hydraulic pressure.

For this reason, in order to connect the work machine, double work must be done for the hydraulic connection in addition to the work machine connection, so when working with a two-person team, unnecessary manpower is wasted considering the level of work, and work costs increase due to the addition of manpower. is becoming the cause of.

When performing work alone, work efficiency is not good because the worker has to move fully between the driver's seat and the boom of the excavator. In addition, if the hydraulic connection is incorrect, the work may be stopped due to poor hydraulic supply during work. Continuous work becomes difficult.

This is because the hydraulic lines are connected manually by workers, which raises the risk of misassembly as well as the lack of a strong bonding force. Even if the hydraulic lines are connected, if the hydraulic hoses are not aligned neatly, they may become twisted during work. It is caused by a cause that causes damage to the hydraulic line.

As mentioned above, the connection of the hydraulic line along with the connection of the work machine cannot be performed smoothly, so a lot of time and effort is required to prepare for work, and it becomes difficult to continue efficient work due to malfunction or damage during the work process, and various other problems. These are occurring.

Accordingly, the present invention was invented to solve the above problems, and includes a main body link frame 103 connected to the end of the boom 102 of the excavator 101 and a hinge pin;

Rotating means 105 installed inside the main body link frame 103 to rotate the work tool 104 connected below the main body link frame 103 in the forward and reverse directions;

A work machine connecting means (110) installed below the main body link frame (103) to enable connection with the work machine (104);

Including a main body connection means 130 installed on the upper part of the work machine 104 and connected to the work machine connection means 110;

The main link frame and the work tool can be connected and disconnected with one touch, and the hydraulic connection is made automatically, so the operator does not have to leave the driver's seat, so it is possible to achieve the goal of increasing efficiency and ensuring safety.

The present invention makes it possible to connect the hydraulic line at the same time as connecting the work machine while the worker is seated on the loading seat of the excavator, thereby facilitating the connection of the work machine, which has the effect of reducing unnecessary time for work preparation.

The present invention allows the operator to connect the work machine and the hydraulic line with a one-touch type, and ensures smooth workability after connecting the work machine, and ensures stability by preventing damage due to interference such as twisting of the hydraulic line during the work process. It has a possible effect.

The present invention has various effects, including eliminating concerns about safety accidents such as body entrapment that may occur in the process of handling hydraulic lines because there is no need for additional work to release the hydraulic line after connecting or disconnecting the work machine. It's an invention.

Figure 1 is an overall perspective view showing a work machine connection device for an excavator to which the technology of the present invention is applied.
Figure 2 is an exploded perspective view showing a work machine connection device for an excavator to which the technology of the present invention is applied.
Figure 3 is a cross-sectional diagram showing a work machine connection device for an excavator to which the present technology is applied.
Figure 4 is a longitudinal cross-sectional diagram showing a work machine connection device for an excavator to which the technology of the present invention is applied.
Figure 5 is a cross-sectional view taken from part A showing the work machine connection device for an excavator to which the technology of the present invention is applied.
Figure 6 is an exemplary diagram showing the use state of the work machine connection device for an excavator to which the technology of the present invention is applied.

Hereinafter, the preferred configuration and operation of the present invention for achieving the above object will be described in relation to the accompanying drawings.

Figure 1 is an overall perspective view showing a work machine connection device for an excavator to which the technology of the present invention is applied, Figure 2 is an exploded perspective view showing a work machine connection device for an excavator to which the technology of the present invention is applied, and Figure 3 is an excavator to which the technology of the present invention is applied. A cross-sectional diagram showing a work machine connection device for a work machine, Figure 4 is a longitudinal cross-sectional diagram showing a work machine connection device for an excavator to which the technology of the present invention is applied, and Figure 5 is a diagram showing a work machine connection device for an excavator to which the technology of the present invention is applied. Figure 6, a cross-sectional view of an excerpt, is an example diagram showing the use state of the work machine connection device for an excavator to which the technology of the present invention is applied and is explained together.

The work machine connection device 100 for an excavator to which the technology of the present invention is applied includes a main body link frame 103 connected to the end of the boom 102 of the excavator 101 and a hinge pin, and the main body link frame 103 A typical rotation means 105 consisting of a rotation cylinder and a ring gear is built into the main body link frame 103 so that the work tool 104 connected below can be rotated in the forward and reverse directions.

A work machine connection means 110 is installed below the main body link frame 103 for connection with the work machine 104, and a main body connection means for connection with the work machine connection means 110 is installed on the upper part of the work machine 104 ( 130) is installed to enable one-touch connection between the main body link frame 103 and the work tool 104.

The work machine connection means 110 includes a connection plate 111 that is connected to the rotation means 105 and rotates forward and backward by the rotation means 105, and a main body link frame 103 at the center of the connection plate 111. ) and fix the cylindrical joint 113 that protrudes to the upper center and forms a hydraulic line hole 112 so that the hydraulic line can be connected to the center.

The joint 113 is provided with a bay lug or bushing to ensure smooth operation by allowing the connection plate 111 to freely rotate with respect to the main body link frame 103, and the hydraulic line passing through the hydraulic line hole 112. It is natural that twisting or damage can be excluded from the source.

A box-type work machine connection body 115 having a space 114 therein is provided on the bottom of the connection plate 111, and a rear side of the main body connection means 130 is provided on the lower rear side of the work machine connection body 115. It must have an integral rear hook (116) for hanging and maintaining it.

The work machine connection body 115 is formed with a sliding means 117 consisting of a guide rail (GL) and a guide bar (GB), and a work machine hitch 118 for connecting to the work machine is coupled to the work machine connection body 115. ) A hitch cylinder 119 is installed in the space to connect the rod 120 to the rear of the work tool hitch 118 so that the work tool hitch 118 can move forward and backward by the hitch cylinder 119.

A front hook 121 is formed on the bottom of the work tool hitch 118 to hang and maintain the front side of the main body connection means 130, and on the upper front side of the work tool hitch 118, it is accurately coupled with the main body connection means 130. The positioning pin 122 for is projected.

A hydraulic coupler 123 is fixed to the front lower side of the work machine hitch 118, and the hydraulic hose 124 drawn from the excavator is connected to the work machine hitch 118 via a hydraulic line hole 112 formed in the joint 113. It is connected from the back of the, and the hydraulic hose for supplying hydraulic pressure to the hitch cylinder 119 is connected to the space 114 of the actuator connection body 115 through the hydraulic line hole 112 formed in the joint 113. Position it so that it is not exposed to the outside.

A hole is formed on the side or back of the work machine connection body 115 to visually check the inside to check for abnormalities in the hitch cylinder 119 or hydraulic hose 124, and to ensure maintainability in case of emergency. It would be advisable to close it with a cover, etc. so that it is not exposed on a regular basis.

On the side of the work machine connection body 115, there is a safety lever 125 that slides or enters in the form of a spiral (screw) in the direction of the space 114 of the work machine connection body 115 to prevent the retreat of the work machine hitch 118. It is further provided with

The main body connecting means 130 is provided with a plate-shaped main body connecting body 131 that is fixed to the upper surface of the work tool 104 at a predetermined distance, and the front and rear sides of the main connecting body 131 are provided with a front body connecting body 131. The hook 121 and the rear hook 116 are provided with a front pin 132 and a rear pin 133 that can be caught.

A main body hitch 135 erected upward is fixed to the front of the main body connecting body 131, and a positioning hole 136 to which a positioning pin 122 can be coupled is provided on the inner side of the main body hitch 135. It forms a female hydraulic coupler (137) that is combined with the hydraulic coupler (123) to transmit hydraulic pressure.

The outer part of the female hydraulic coupler 137 exposed to the outer surface of the main body hitch 135 is connected to the work machine cylinder mounted on the work machine 104 with a hydraulic hose to prevent hydraulic pressure transmission, and the main body hitch 135 A stopper (138) protrudes from the top of the inner side to alleviate shock that may occur during coupling.

A guide with an enlarged diameter is formed at the entrance of the positioning hole 136 to facilitate entry of the positioning pin 122, and a spring is built into the rear of the positioning pin 122 to provide accurate It may be sufficient to prevent excessive entry before positioning and damage to the device itself or the surrounding area.

The process of connecting and disconnecting a work machine using the work machine connection device 100 for an excavator to which the technology of the present invention is applied as described above is as follows.

When connecting the work machine 104, the operator sits in the driver's seat of the excavator 101 and operates the lever, button, or switch to move the boom bar 102 near the work machine 104 and rotates it if necessary. The direction of the work machine connecting means 110 mounted below the main body link frame 103 is aligned with the work machine 104 using the means 105.

In this state, the rear hook 116 formed integrally at the rear of the work machine connection body 115, which constitutes the work machine connection means 110, while moving the boom bar 102, constitutes the main body connection means 130 provided on the work machine 104. It is connected to the rear pin 133 so that it is in a primary locked state.

Next, the boom bar 102 is retracted in the direction of the excavator 101 in an upward motion to lift the work machine 104 so that the work machine connection means 110 and the main body connection means 130 are aligned.

That is, after stopping the movement with the lower surface of the work machine connection body 115 connected to the upper surface of the main body connection body 131, the hitch cylinder 119 installed in the space 114 of the work machine connection body 115 is installed. When extended, the work tool hitch 118 coupled to the sliding means 117 formed in front of the work machine connection body 115 slides forward from the middle position of the work machine connection body 115.

Then, the front hook 121 formed on the bottom of the work machine hitch 118 is engaged with the front pin 132 of the main body connection means 130 and is caught, and at the same time, it is fixed to the front upper side of the work machine hitch 118. The decision pin 122 is coupled to the positioning hole 136 formed in the main body hitch 135, and the male hydraulic coupler 123 is coupled to the female hydraulic coupler 137, so there is no disruption in hydraulic pressure transmission to the work machine.

In this state, the connection of the work tool 104 is completed, so the necessary work can be performed. In this process, due to a failure of the hitch cylinder 119 (due to hydraulic loss, etc.) during work, the work tool hitch 118 retracts and the work machine 104 is connected. To prevent the work tool hitch 118 from being separated, the safety lever 125 further provided on the side of the work machine connection body 115 can be moved in the direction of the space 114 to prevent the work machine hitch 118 from moving forward.

If you want to separate the work machine 104 after performing work using the work machine 104 that requires the use of hydraulic pressure as described above, release the safety lever 125 and retract the hitch cylinder 119 to hit the work machine. Retract (118).

Then, as the front hitch 118 retracts, the positioning pin 122 and the hydraulic coupler 123 are separated from the positioning hole 136 and the female hydraulic coupler 137, and the front hook 121 is separated from the front pin ( Since it is separated from 132), move the boom 102 to lower the work tool 104 and then separate the rear hook 116 from the rear pin 133.

In this way, the worker combines the work machine connection means 110 mounted on the main body link frame 103 of the boom stand 102 and the main body connection means 130 mounted on the work machine 104, thereby combining the work machine 104 and the work machine. Since hydraulic pressure can be transmitted in a one-touch manner at (104), there is no inconvenience such as having to leave the driver's seat and move to the connection position to connect the hydraulic pressure.

By the joint, the hydraulic line is connected to the male and female hydraulic couple (123, 137) through the inside of the work machine connecting means (110), so that there is no twisting during the operation process, making it possible to exclude hydraulic pressure transmission failure.

This invention has various advantages, such as being able to connect and disconnect the work machine with a one-touch type, and hydraulic connection is made automatically, so the operator does not have to leave the driver's seat, increasing efficiency and ensuring safety.

100; Excavator work machine connection device
105; Rotating means 110; Work machine connection means
113; joint 115; Work machine connection body
116; rear hook 117; sliding means
118; Work technique hitch 119; Hitch cylinder
121; front hook 122; Positioning pin
123; hydraulic coupler 125; safety lever
130; main body connection means 131; Main body connection body
132; front fin 133; rear fin
135; Body hitch 136; Positioning hole
137; Female hydraulic coupler

Claims (4)

A main body link frame (103) connected to the end of the boom (102) of the excavator (101) and a hinge pin;
Rotating means 105 installed inside the main body link frame 103 to rotate the work tool 104 connected below the main body link frame 103 in the forward and reverse directions;
A work machine connecting means (110) installed below the main body link frame (103) to enable connection with the work machine (104);
Including a main body connection means 130 installed on the upper part of the work machine 104 and connected to the work machine connection means 110;
A work machine connecting device for an excavator, characterized in that the main body link frame (103) and the work machine (104) can be connected in a one-touch type. According to claim 1;
The work machine connection means 110 includes a connection plate 111 that is connected to the rotation means 105 and rotates forward and backward by the rotation means 105;
a joint 113 fixed to the center of the connection plate 111, protruding toward the upper center of the main body link frame 103, and forming a hydraulic line hole 112 at the center so that a hydraulic line can be connected;
a box-type work machine connection body 115 provided on the bottom of the connection plate 111 and having a space 114 therein;
a rear hook 116 that hangs and maintains the rear side of the main body connection means 130 on the lower rear side of the work machine connection body 115;
a work machine hitch (118) coupled to the sliding means (117) formed on the work machine connection body (115) and connected to the work machine;
a hitch cylinder (119) installed in the space of the work machine connection body (115) to allow the work machine hitch (118) to move forward and backward along the sliding means (117);
a front hook 121 formed on the bottom of the work machine hitch 118 to hang and maintain the front side of the main body connecting means 130;
a positioning pin 122 that protrudes from the front upper side of the work machine hitch 118 to enable accurate coupling with the main body connection means 130;
The hydraulic coupler 123 is fixed to the front lower side of the work machine hitch 118, and the hydraulic hose 124 drawn out from the excavator is connected to the back of the work machine hitch 118 via the hydraulic line hole 112 of the joint 113. A work machine connection device for an excavator, characterized in that it is connected to. According to claim 1;
The main body connecting means 130 includes a plate-shaped main connecting body 131 fixed to the upper surface of the work tool 104;
A front pin 132 and a rear pin 133 provided on the front and rear sides of the main body 131 so that the front hook 121 and the rear hook 116 can be caught;
a main body hitch 135 erected upward from the front of the main body connecting body 131;
a positioning hole 136 formed on the inner surface of the main body hitch 135 so that the positioning pin 122 can be coupled thereto;
A work machine connection device for an excavator, characterized in that it includes a female hydraulic coupler (137) that is coupled to the hydraulic coupler (123) of the work machine connection means (110) and mounted to transmit hydraulic pressure. According to claim 2;
The side of the work machine connection body 115 further includes a safety lever 125 that enters and exits in the direction of the space 114 of the work machine connection body 115 to prevent the retreat of the work machine hitch 118. Worker connection device for excavator.