KR101542889B1 - Adapter for oil pressure division of excavator forefinger - Google Patents

Abstract

The present invention relates to an adaptor for oil pressure distribution of a hydraulic cylinder of an excavator forefinger. The objective of the present invention is to apply and install the adaptor as to the hydraulic cylinder having various positions of nipples for fixing a hose compatibly no matter that a fixing position of a hydraulic pipe installed and fixed at various positions like the left or right side of a boom is different from the position where the nipple for fixing the hose of the hydraulic cylinder is comprised, by comprising a distribution block and a distributing adjustment bar which blocks oil pressure supply from the hydraulic pipe selectively according as the distribution adjustment bar is inserted into the center of the distribution block and then is rotated by a fixed angle. For this, the adaptor for oil pressure distribution of the hydraulic cylinder of the excavator forefinger is connected by a pair of hydraulic hoses and a pair of hydraulic pipes which are installed and fixed at various positions like the left and the right side of the boom of an excavator. The adaptor includes: the distribution block which is installed and fixed by a fixing member by having a front closely adhering on a chamfered part formed on an upper part of one side of the cylinder of the hydraulic cylinder, in order to supply or collect the oil pressure by distributing the oil pressure to a large capacity room and a small capacity room of an upper part and a lower part of a piston in the cylinder in order to elevate the piston selectively which is fixed and installed on a rear of an upper part of the hydraulic cylinder having the upper part connected and fixed to the rear of an arm of the excavator as being able to rotate for operation of the forefinger, and is inserted into the cylinder of the hydraulic cylinder so that an upper part of a rod is integrated in the lower part; and the distribution adjustment bar which is installed by being inserted into an insertion hole of the distribution block. On the other hand, the distribution adjustment bar has finishing bolt combined to an open upper part of an entrance guide flow path and the open upper part of the finishing bolt is closed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to hydraulic excavator forefinger,

More particularly, the present invention relates to a distributing block and a distribution adjusting rod inserted in the center of the distributing block and selectively blocking the hydraulic pressure supply from the hydraulic pipe as it rotates at a constant angle, The hose fixing nipple is provided at various positions such as the left and right sides of the boom, and the position where the hose fixing nipple of the hydraulic cylinder is provided is different from that of the hydraulic cylinder. The present invention relates to a connector for hydraulic pressure distribution in a hydraulic cylinder, which can be easily installed and installed in a hydraulic cylinder.

Generally, an excavator is a type of construction machine that performs excavation work for digging the earth in civil engineering, construction, construction site, loading work for transporting soil, crushing work for dismantling the building, stop work for arranging the ground, And an upper revolving body and a working device which are mounted on the traveling body and rotate 360 degrees.

In addition, the excavator may be used by selectively attaching suitable working devices according to the state of the earth and rock, the type of work, and the use thereof. For example, a bucket for general excavation and soil- In addition to this, hard ground, breakers for crushing rocks, crushers used for demolition and crushing of buildings, etc. can be mainly assembled and used in excavators.

Recently, it has been proposed to use a separate clamping device in an arm connected to a boom of an excavator so as to be able to move or move a large rock or tree that can not be moved or moved by using a bucket It is true.

However, in the conventional excavator clamp device, when the bucket is to be used only, it must be separated from the arm, and when the clamp device is not separated from the arm of the excavator, the interference which the excavation work using the bucket by the clamp device is rather disturbed A problem occurs.

That is, when the clamping device is not completely separated from the arm when the clamping device is not used, the clamping device installed to provide convenience of operation by a structure in which the clamping device is fixed in a state in which the clamping device is fixed inside the arm, There is a problem that the work can not be performed smoothly.

As a result, conventionally, when the digging operation is performed without using the clamping device, the clamping device is separated and stored separately. In addition, when the clamping device is used during the excavation work, There has been a problem in that the working time is delayed.

Accordingly, in order to solve the above problems, the applicant of the present application filed a patent application (Patent Document 1) (Korean Patent Laid-Open No. 10-2011-0116866, October 26, 2011) and Patent Document 2 (Korean Patent No. 10-1208774 November 29, The hydraulic cylinder 14 can be moved to the excavator without separating the clamp 10 from the arm 12 of the excavator as shown in Figure 1, The tongue 10 is tightly fixed to the inside of the arm 12 of the excavator in a tightly closed state using the driving force of the bucket 11 so that the work operation of the bucket 11 is performed In order to use the technical features and the clamping device which do not disturb at all, the clamping device 10 is rotated toward the bucket 11 by using the driving force of the hydraulic cylinder 14 as shown in FIG. 2, Pick up The technology of the digging device of the excavator having the technical features for allowing the digging device to be opened and registered has been filed.

On the other hand, the clamp device of the excavator described above is fixed to the upper side, the left side, or the right side of the boom connected to the hydraulic cylinder 14 for driving the clamp 10 so that the arm 12 can rotate at a constant angle, One of the pair of hydraulic pipes is connected to the inside of the upper portion of the cylinder of the hydraulic cylinder 14 by a hydraulic hose and a substitute chamber which is a space on the upper surface side of the piston and the other of the pair of hydraulic pipes is connected to the hydraulic cylinder 14 is driven by the hydraulic pressure distribution through a pair of hydraulic pipes connected to the lower side of the cylinder in the lower portion of the cylinder and connected to the upper and lower portions of the hydraulic cylinder 14, will be.

However, in the conventional excavator clamp device as described above, a pair of hydraulic pipes fixed to the left or right side of the boom variously, and a hydraulic pressure pipe having the hose fixing nipple limited to the left and right positions, There is a problem in that the cylinder can not be installed by applying the cylinder.

That is, only the hydraulic cylinder having the hose fixing nipple can be installed only in a position corresponding to the position where the hydraulic pressure pipe is installed and fixed on the boom, so that compatibility with the installation of the hydraulic cylinder equipped with the hose fixing nipple is remarkable There is a falling problem.

Therefore, regardless of whether the fixed position of the hydraulic pipe installed and fixed at various positions on the left or right side of the boom and the position of the hose fixing nipple of the hydraulic cylinder are different, It is required to research and develop a connector for hydraulic pressure distribution in a hydraulic cylinder of an excavator clamp device which can be installed and installed in a hydraulic cylinder.

Korean Patent Publication No. 10-2011-0116866 Nov. 26, 2011 Korean Registered Patent No. 10-1208774 Nov. 29, 2012 Registration Korean Patent Publication No. 10-2013-0088664 Issue No. 2013.08.08.

In order to solve the above-mentioned problems, the present invention is characterized in that a distribution control rod is inserted in the center of a distribution block and a distribution block to selectively block hydraulic pressure supply from a hydraulic pipe as it rotates at a predetermined angle, It is easy to apply and install the hydraulic cylinder having various positions of the hose fixing nipples compatible with each other regardless of whether the fixed position of the hydraulic pipe installed at various positions and the position of the hose fixing nipple of the hydraulic cylinder are different from each other And to provide a connector for hydraulic pressure distribution of a hydraulic cylinder.

The present invention for achieving the above-mentioned objects is as follows. That is, the connection port for hydraulic pressure distribution in the hydraulic cylinder of the excavator apparatus according to the present invention is connected to a pair of hydraulic pipes installed and fixed at various positions such as the left or right side of the boom of the excavator and a pair of hydraulic hoses, A piston which is inserted into the cylinder of the hydraulic cylinder and is integrally connected with the upper end of the rod is selectively lifted and lowered to the upper side of the cylinder of the hydraulic cylinder in which the upper end portion is rotatably connected for operation of the clamping device, Wherein the hydraulic cylinder is provided with an upper portion and a lower portion of the piston in the cylinder so as to distribute and supply hydraulic pressure to a hydraulic chamber of the hydraulic cylinder, And is fixed to the upper part of the front face by a fixing member, An inlet hole communicating with the communication hole communicating with the substitute chamber is formed and an insertion hole communicating with the inlet and outlet holes is formed through the upper surface from the center to the upper surface and selectively connected to the upper portion of the one side surface by the hydraulic pipe and the hydraulic hose A first upper inlet and outlet hole communicating with the insertion hole and a second upper inlet and outlet hole selectively communicating with the hydraulic pipe and the hydraulic hose at an upper portion of the other side are formed in communication with the insertion hole, A first lower inlet / outlet hole and a second lower inlet / outlet hole communicated with the hydraulic pipe and the hydraulic hose or communicated with the small-capacity chamber, the hose fixing nipple protruding from the lower side of the cylinder, A distribution block formed; And an inlet / outlet hole penetrating from the lower end of the inlet / outlet guide passage to a front side to form an inlet / outlet hole corresponding to the inlet / outlet hole, wherein the inlet / And an upper inlet / outlet flow path is formed in the upper side of the inlet / outlet hole so as to pass through the inlet / outlet flow path in a horizontal direction and have both ends communicated with the first upper inlet / outlet hole and the second upper inlet / outlet hole, And a distribution control rod in which a lower inlet / outlet channel communicating with the first lower inlet / outlet hole and a lower inlet / outlet flow passage communicating with the second lower inlet / outlet hole are formed. The distribution control rod has an upper portion opened to the finishing bolt, Sealed closed structure.

Here, the hermetic bolt is selectively coupled to the first upper inlet / outlet hole or the second upper inlet / outlet hole, which are not connected to the hydraulic pipe and the hydraulic hose, so that the first upper inlet / outlet hole or the second upper inlet / desirable.

At this time, the first upper I / O hole is extended to the side opposite to the inserting hole to form a first upper expansion joint having a spiral on the inner surface so that the hermetic bolt is selectively coupled to the first upper extension joint, 2 upper input / output holes are formed on the opposite side of the insertion hole to form a second upper extension coupling portion having a spiral on the inner face, so that the hermetic bolt is selectively coupled to the second upper extension coupling portion.

An upper connection nipple to which the end of the hydraulic hose is connected is fixedly coupled to the first upper input / output hole or the second upper input / output hole, to which the hydraulic bolt is not selectively coupled, And the upper connection nipple is selectively fixed to the first upper extension coupling portion or the second upper extension coupling portion.

The first lower inlet / outlet hole and the second lower inlet / outlet hole may be selectively connected to the hydraulic pipe by the hydraulic hose or may be connected to the hose fixing nipple by a hydraulic connection hose. A connecting nipple or a connecting nipple to which the end of the hydraulic connecting hose is connected is selectively coupled and fixed so that the lower connecting nipple or the connecting nipple is selectively engaged and fixed, A lower extension coupling portion and a second lower extension coupling portion are formed.

Preferably, the distribution block is formed with a plurality of lower O-ring grooves at predetermined intervals on the inner surface of the lower end of the insertion hole, and the O-ring is inserted and fixed in the lower O-ring groove.

Further, the distribution control rods are formed with a plurality of upper O-ring grooves at regular intervals on the upper end outer surface, and O-rings are inserted and fixed in the upper O-ring grooves.

In addition, it is preferable that the inlet / outlet hole is formed with recesses through which the O-ring having the inner diameter larger than the inlet / outlet diameter is inserted along the circumference.

In addition, when the distribution control rod is fixedly inserted into the insertion hole of the distribution block, an operation knob is protruded from the lower end of the distribution block so as to protrude from the lower end of the distribution block by a predetermined length, and the operation knob is chamfered, Do.

The effect of the hydraulic distribution connector of the hydraulic cylinder of the excavator clamp device according to the present invention will be described as follows.

And a distribution control rod inserted in the center of the distribution block and the distribution block to selectively block the supply of hydraulic pressure from the hydraulic piping as it rotates at a predetermined angle. Thus, a fixed position of the hydraulic piping installed and fixed at various positions on the left or right side of the boom It is possible to apply and install the hydraulic cylinder to a hydraulic cylinder having various positions of the hose fixing nipples compatible with each other regardless of the position where the hose fixing nipple of the hydraulic cylinder is provided.

Figs. 1 and 2 show an example of a clamping device and an operating structure of a conventional excavator. Fig.
3 is an exploded perspective view showing a hydraulic distribution connector of a hydraulic cylinder of an excavator clamp device according to the present invention.
FIG. 4 is a cross-sectional view showing a coupling port for hydraulic pressure distribution in a hydraulic cylinder of an excavator clamp device according to the present invention; FIG.
5 is an exploded perspective view showing a structure in which the hydraulic cylinder is installed on a hydraulic cylinder with respect to a connecting port for hydraulic pressure distribution in a hydraulic cylinder of an excavator.
6A and 6B are views showing the use state of the hydraulic cylinder of the excavator pinching device according to the present invention, showing the state of use of the hydraulic connecting pipe.
FIG. 7 is an exemplary view showing a substantial part of an excavator to which a hydraulic pressure distribution connector of a hydraulic cylinder of an excavator apparatus according to the present invention is applied. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a hydraulic distribution connector of a hydraulic cylinder of an excavator apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view illustrating a hydraulic pressure distribution connector of a hydraulic cylinder of an excavator apparatus according to the present invention, FIG. 4 is a cross-sectional view illustrating a hydraulic pressure distribution connector of a hydraulic cylinder of an excavator apparatus according to the present invention, FIG. 5 is a perspective view illustrating a structure of a hydraulic cylinder of a digging device of an excavator according to the present invention, which is installed on an upper portion of a hydraulic cylinder with respect to a hydraulic pressure distribution connector. FIG.

6A and 6B are views showing a use state of a hydraulic cylinder of a digging device hydraulic cylinder according to the present invention in a use state of the hydraulic cylinder, Fig. 8 is an exemplary view showing a recess of an installed excavator.

3 to 7, the hydraulic pressure distribution connector of the hydraulic excavator apparatus according to the preferred embodiment of the present invention includes a pair of hydraulic pipes installed and fixed at various positions such as the left or right of the boom 10 of the excavator, The hydraulic cylinder 50 is connected to the rear side of the arm 20 of the excavator by means of a pair of hydraulic hoses 15 and 16 and the hydraulic cylinders 11 and 12, And a piston 55 inserted into the cylinder 51 of the hydraulic cylinder 50 and integrally connected to the upper end of the rod 56 is selectively moved up and down. And the hydraulic pressure is distributed to the upper and lower substitute chamber 52 and the small capacity chamber 53 of the piston 51 inside the cylinder 51 to supply or recover the same.

The pair of hydraulic pipes 11 and 12 are fixed to the upper left corner of the boom 10 or the upper right corner of the boom 10 by a fastener (not shown) The pair of hydraulic pipes 11 and 12 are shown in a superposed state in Fig.

The connection ports for the hydraulic pressure distribution of the hydraulic cylinder of the excavator apparatus according to the present invention connected to the pair of hydraulic pipes 11 and 12 and the pair of hydraulic hoses 15 and 16 can be broadly classified into the distribution block 100 and And a distribution control rod (300).

Specifically, the distribution block 100 is fixedly mounted on the chamfered portion 51a formed on the upper portion of one side of the cylinder 51 of the hydraulic cylinder 50 with the front face closely attached thereto.

The distribution block 100 is fixedly installed with fixing holes 58 formed on the chamfered portions 51a and fixed holes 58 formed on the front surface of the distribution block 100, And the fixing member 70 is fastened and fixed through the fixing member 101. [

The dispensing block 100 fixedly installed as described above has an inlet / outlet hole 110 formed at a central portion of the chamfered portion 51a at an upper portion of the front and communicating with a communication hole 51b communicating with the substitute chamber 52, .

At this time, along the circumference of the input / output hole 110, a groove 111 into which an O-ring O having an inner diameter larger than the diameter of the input / output hole 110 is inserted is preferably recessed.

Through the structure in which the O-ring O is inserted into the groove 111 as described above, the front surface of the distribution block 100 is brought into close contact with the chamfered portion 51a of the hydraulic cylinder 50, The leakage of the hydraulic pressure through the contact surface between the inlet / outlet hole 110 of the distribution block 100 and the communication hole 51b can be stably prevented.

In addition, the distribution block 100 is formed with an insertion hole 120 penetrating from the center of the upper surface to the lower surface and communicating with the input / output hole 110.

The distribution block 100 has a first upper inlet / outlet hole 130 communicating with the insertion hole 120, which is selectively connected to the hydraulic pipe 11 and the hydraulic hose 15, And a second upper inlet / outlet hole 140 connected to the hydraulic pipe 11 and the hydraulic hose 15 is selectively formed in the upper portion of the other side in communication with the insertion hole 120.

The distribution block 100 is connected to the hydraulic pipe 12 and the hydraulic hose 16 selectively at the lower side and the lower side of the other side or communicates with the small capacity chamber 53, A first lower input / output hole 150 and a second lower input / output hole 160 connected to the hose fixing nipple 54 protruded on one side and the hydraulic connection hose 61 are formed in communication with the insertion hole 120 .

The distribution block 100 as described above is formed with a plurality of lower O-ring grooves 121 at predetermined intervals on the inner surface of the lower end of the insertion hole 120 to insert an O-ring O into the lower O- It is preferable to fix it.

The lower O-ring groove 121 is provided to allow the O-ring O to be inserted and fixed so that the hydraulic pressure leaks to the lower side inserted into the insertion hole 120 of the distribution control rod 300 when inserted and fixed It can be prevented stably.

The distribution control rod 300 is inserted into the insertion hole 120 of the distribution block 100. The distribution control rod 300 is connected to the inlet / ) Is recessed.

At this time, an inlet / outlet hole 320 corresponding to the inlet / outlet hole 110 is formed through the lower end of the inlet / outlet flow path 310 to the front side.

An inlet / outlet hole 320 is formed at an upper portion of the inlet / outlet hole 310. The inlet / outlet hole 320 is horizontally perpendicular to the inlet / outlet flow path 310 and has both ends communicated with the first upper inlet / outlet hole 130 and the second upper inlet / A flow path 330 is formed.

The distribution control rod 300 is formed with a lower inlet / outlet flow passage 350 communicating with both the first lower inlet / outlet hole 150 and the second lower inlet / outlet hole 160 below the inlet / do.

In particular, the distribution control rod 300 as described above has a finishing bolt 370 coupled to an open upper portion of the inlet / outlet guide passage 310, and an upper portion of the finishing bolt 370 is hermetically closed.

At this time, the finishing bolt 370 is coupled to the open top of the inlet / outlet guide passage 310, and is connected to the inlet / outlet guide passage 310 through a gasket G Are interposed and fixed together.

In addition, the distribution control rod 300 may have a plurality of upper and lower O-ring grooves 301 at predetermined intervals on the outer surface of the upper end thereof, and an O-ring O may be inserted and fixed in the upper O-ring groove 301.

The upper O-ring groove 301 is provided to allow the O-ring O to be inserted and fixed so that the hydraulic pressure leaks to the upper side inserted into the insertion hole 120 of the distribution control rod 300 when inserted and fixed It can be stably prevented.

The distribution control rod 300 is inserted into the insertion hole 120 of the distribution block 100 so that the control knob 303 is protruded from the lower end of the distribution block 100 by a predetermined length And the operation knob 303 is provided in a cylindrical shape, and both sides are chamfered.

The operation knob 303 is provided to insert the distribution control rod 300 into the insertion hole 120 of the distribution block 100 so that the operation knob 303 is positioned below the distribution block 100 So that the operation knob 303 can be selectively and simply rotated by a work tool or the like.

Therefore, when the operation knob 303 is rotated 90 degrees, the hydraulic pressure supply and recovery to the inside of the cylinder 51 of the hydraulic cylinder 50 through the upper inlet / outlet flow path 330 and the lower inlet / It can be selectively blocked.

The connection port for the hydraulic pressure distribution of the hydraulic cylinder of the excavator apparatus according to the present invention as described above is connected to the first upper inlet / outlet hole 130, which is not connected to the hydraulic pipe 11 by the hydraulic hose 15, Or the second upper input / output hole (140) is selectively coupled with the closing bolt (200) to selectively seal the first upper input / output hole (130) or the second upper input / output hole (140).

The first upper input / output hole 130 is formed on the opposite side of the insertion hole 120 and has a first upper extension coupling portion 131 having a spiral on the inner surface thereof, so that the sealing bolt 200 is inserted into the first And is selectively coupled to the upper expansion joint portion 131.

The second upper I / O hole 140 is formed on the opposite side of the insertion hole 120 and has a second upper expansion joint 141 having a spiral on the inner surface thereof, 2 upper extension coupling portion 141, as shown in Fig.

It is preferable that the sealing bolt 200 is selectively coupled to the first upper expansion joint part 131 or the second upper expansion joint part 141 and the gasket G is interposed and fixed thereto.

The first upper input / output hole 130 or the second upper input / output hole 140, to which the sealing bolt 200 is not selectively coupled, may be connected to the hydraulic pipe 11 by a hydraulic hose 15, The upper connection nipple 410 is coupled to the first upper extension coupling portion 131 or the second upper extension coupling portion 141. The upper coupling nipple 410 is coupled to the upper coupling nipple 410, As shown in Fig.

The first lower inflow / outflow hole 150 and the second lower inflow / outflow hole 160 may be selectively connected to the hydraulic pipe 12 by the hydraulic hose 16 or may be connected to the hose fixing nipple 54 by a hydraulic connection A lower connection nipple 420 to which the end of the hydraulic hose 16 is connected or a connection nipple 430 to which the end of the hydraulic connection hose 61 is connected is selectively coupled and fixed so as to be connected to the hose 61 .

The first lower extension engaging portion 151 and the second lower extension engaging portion 151 are extended on the opposite side of the insertion hole 120 so that the lower connection nipple 420 and the connection nipple 430 are selectively engaged, It is preferable that a lower expanding engagement portion 161 is formed.

The upper connection nipple 410, the lower connection nipple 420, and the connection nipple 430 are preferably tightly coupled to each other with a gasket (not shown) interposed therebetween.

Referring to FIG. 6A, with reference to FIGS. 3 to 5, the installation structure of the hydraulic cylinder of the excavator apparatus for hydraulic pressure distribution according to the present invention as described above will be described. First, The distribution block 100 is fixedly mounted on the chamfered portion 51a formed on the cylinder 51 of the hydraulic cylinder 50 with the fixing member 70 while the distribution control rod 300 is inserted and fixed on the upper portion 120 .

A hydraulic hose 15 is connected to the upper connection nipple 410 and is connected to the hydraulic pipe 11 at one end of the upper connection nipple 410, Respectively.

At this time, the second upper inlet / outlet hole 140 of the distribution block 100 is hermetically sealed with the hermetic block 200.

The lower connection nipple 420 is coupled to the first lower inlet hole 150 of the distribution block 100 and the hydraulic hose 16 is connected to the lower connection nipple 420 at one end thereof with the hydraulic pipe 12, Is connected and fixed.

The second lower inlet and outlet hole 160 of the distribution block 100 is connected to the small capacity chamber 53 by a connection nipple 430 and is connected to a lower portion of the cylinder 51, And the other end of the hydraulic connection hose 61 to which the nipple 54 is connected at one end is connected and fixed.

Meanwhile, the installation structure for the hydraulic pressure distribution connector of the hydraulic cylinder of the excavator apparatus according to the present invention as described above may be selectively changed, and may be installed as shown in FIG. 6B.

6B, the other end of the hydraulic hose 15, which is connected to one hydraulic pipe 11 at one end, is coupled and fixed to the second upper I / O hole 140, and the other end of the hydraulic pipe 15 12 and the other end of the hydraulic hose 16 to which one end is connected is fixedly coupled to the second lower inlet / outlet hole 160 side.

At this time, the other end of the hydraulic connection hose 61, which is connected to the hose fixing nipple 54 at one end, is connected to the first lower input / output hole 150 side.

In addition, in addition to the two structures described above, the installation structure for the hydraulic pressure distribution connector of the hydraulic cylinder of the excavator apparatus according to the present invention may include a pair of hydraulic pipes 11, 12 connected to the pair of hydraulic pipes 11, And a cross type in which the other ends of the hoses 15 and 16 are connected to upper and lower portions of one side of the distribution block 100, respectively.

According to the connecting pipe for distributing hydraulic fluid in the hydraulic cylinder of the excavator clamp device according to the present invention as described above, the hydraulic pipes 11 and 12 are inserted into the center of the distribution block 100 and the distribution block 100, The hydraulic cylinder 50 is fixed to the fixed position of the hydraulic pipes 11 and 12 installed and fixed at various positions on the left or right side of the boom 10 by providing the distribution control rod 300 for selectively cutting off the hydraulic pressure supply from the boom 10, The present invention can be applied to a hydraulic cylinder 51 having various positions of the hose fixing nipple 54 in a compatible manner irrespective of the position where the hose fixing nipple 54 of the hose fixing hose 54 is provided.

In addition, it is possible to install the hydraulic lines for supplying the hydraulic pressure to the hydraulic cylinder 50 with ease and without stagnation of the hydraulic pressure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the invention is not limited thereto. Various modifications may be made by those skilled in the art. Are included in the scope of the present invention.

10: Boom
11, 12: Hydraulic piping 15, 16: Hydraulic hose
20: arm 30: clamping device
50: Hydraulic cylinder 51: Cylinder
51a: chamfered portion 51b: communicating hole
52: Replacement room 53: Replacement room
54: Hose fixing nipple 55: Piston
56: rod 58: stationary ball
61: Hydraulic connecting hose 70: Fixing member
100: Distribution block 101: Fixed hole
110: inlet / outlet hole 111: groove
120: insertion hole 121: lower O-ring groove
130: first upper input / output hole 131: first upper extension coupling portion
140: second upper input / output hole 141: second upper extension coupling portion
150: first lower inlet / outlet hole 151: first lower extension /
160: second lower input / output hole 161: second lower extension coupling portion
200: Closing bolt 300: Dispense adjustment rod
301: upper o-ring groove 303: operation knob
310: entry / exit guide flow path 320: entry / exit hole
330: Upper inlet / outlet channel 350: Lower inlet /
370: Finishing bolt 410: Upper connecting nipple
420: lower connection nipple 430: connection nipple
O: O-ring G: Gasket

Claims (9)

A pair of hydraulic pipes 11 and 12 installed and fixed at various positions such as the left or right side of the boom 10 of the excavator and a pair of hydraulic hoses 15 and 16, Is fixedly installed on the upper surface of the cylinder 51 of the hydraulic cylinder 50 to which the upper end portion of the hydraulic cylinder 50 is rotatably connected for operation of the pinching device 30 and is inserted into the cylinder 51 of the hydraulic cylinder 50, The upper and lower substitute chamber 52 and the small capacity chamber 53 of the piston 51 inside the cylinder 51 are selectively moved up and down to selectively move the piston 55 integrally connected to the upper end of the rod 56 An excavator clamp device for distributing and supplying or recovering hydraulic pressure, comprising:
The front face of the hydraulic cylinder 50 is tightly fixed to the faceplate 51a formed on the upper side of the cylinder 51 and is fixed by the fixing member 70. The faceplate 51a is formed at the center of the faceplate 51a, An insertion hole 120 communicating with the input / output hole 110 is formed through the lower surface from the center of the upper surface, and the insertion hole 120 communicating with the communication hole 51b communicating with the substitute chamber 52 is formed. A first upper inlet and outlet hole 130 connected to the hydraulic pipe 11 and the hydraulic hose 15 is formed in an upper portion of one side in communication with the insertion hole 120, A second upper inlet and outlet hole 140 connected to the piping 11 and the hydraulic hose 15 is formed in communication with the insertion hole 120 and the hydraulic pipes 12, And is connected to the hydraulic hose 16 or communicated with the small capacity chamber 53, A first lower input / output hole 150 and a second lower input / output hole 160 connected to the hose fixing nip 54 and the hydraulic connection hose 61 are connected to the insertion hole 120, (100); And
An inlet-side guide passage 310 is formed to be inserted into the insertion hole 120 of the distribution block 100 and is recessed from the center of the upper surface to a predetermined downward length and is passed through the lower end of the inlet- Outlet holes 320 corresponding to the inlet and outlet holes 110. The inlet and outlet holes 320 are perpendicular to the inlet and outlet flow path 310 and horizontally penetrate the inlet and outlet holes 310, Outlet bore 330 is formed to communicate with the second upper I / O hole 140 and the first lower I / O hole 150 and the second lower I / O hole 160 below the I / And a distribution control rod 300 in which a lower inlet / outlet passage 350 communicating with both ends is formed,
The distribution control rod (300) is connected to a finishing bolt (370) at an open upper portion of the inlet / outlet conduit (310), and an upper portion of the distribution control rod (300) Of the hydraulic distribution connector.
The method according to claim 1,
The hermetic bolt 200 is selectively coupled to the first upper I / O hole 130 or the second upper I / O hole 140 which are not connected to the hydraulic pipe 11 by the hydraulic hose 15, Wherein the inlet / outlet hole (130) or the second upper inlet / outlet hole (140) is selectively closed.
3. The method of claim 2,
The first upper input / output hole 130 is formed on the opposite side of the insertion hole 120 to form a first upper extension joint 131 having a spiral on the inner surface thereof, And is selectively coupled to the coupling portion 131,
The second upper I / O hole 140 is formed on the opposite side of the insertion hole 120 to form a second upper expansion joint 141 having a spiral on the inner surface thereof, And is selectively coupled to the extended coupling portion (141).
The method of claim 3,
The first upper input / output hole 130 or the second upper input / output hole 140, to which the sealing bolt 200 is not selectively coupled, may be connected to the hydraulic pipe 11 by a hydraulic hose 15,
The upper connection nipple 410 is coupled to the first upper extension coupling portion 131 or the second upper extension coupling portion 141. The upper coupling nipple 410 is coupled to the upper coupling nipple 410, Wherein the hydraulic cylinder is fixedly coupled to the hydraulic excavator.
The method according to claim 1,
The first lower input / output hole 150 and the second lower input / output hole 160 may be selectively connected to the hydraulic pipe 12 by the hydraulic hose 16 or may be connected to the hose fixing nipple 54 and the hydraulic connection hose A lower connection nipple 420 to which the end of the hydraulic hose 16 is connected and a connection nipple 430 to which the end of the hydraulic connection hose 61 is connected are selectively coupled and fixed,
A first lower extension engaging part 151 extending on the opposite side of the insertion hole 120 and having a spiral on the inner surface so that the lower connection nipple 420 or the connection nipple 430 is selectively engaged, And an engaging portion (161) is formed on the outer circumference of the hydraulic cylinder.
The method according to claim 1,
The distribution block 100 is formed with a plurality of lower O-ring grooves 121 at predetermined intervals on the inner surface of the lower end of the insertion hole 120, and an O-ring O is inserted and fixed into the lower O- Excavator clamping device Hydraulic distribution connection of hydraulic cylinder.
The method according to claim 1,
Wherein the distribution control rod (300) is formed with a plurality of upper O-ring grooves (301) at regular intervals on the outer surface of the upper end, and an O-ring (O) is inserted and fixed in the upper O- Of the hydraulic distribution connector.
The method according to claim 1,
Wherein the input / output hole (110) is formed with a groove (111) through which an O-ring (O) having an inner diameter larger than the diameter of the input / output hole (110) is inserted.
The method according to claim 1,
An operation knob 303 is protruded from a lower end of the distribution control rod 300 so as to protrude from the lower end of the distribution block 100 when the distribution control rod 300 is inserted into the insertion hole 120 of the distribution block 100, Wherein the operation knob (303) is provided in a cylindrical shape, and chamfered on both sides thereof.

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