WO2018147491A1

WO2018147491A1 - Hydraulic breaker, hydraulic fluid monitoring system and hydraulic fluid monitoring method

Info

Publication number: WO2018147491A1
Application number: PCT/KR2017/001775
Authority: WO
Inventors: 주진무; 박용식
Original assignee: 대모 엔지니어링 주식회사
Priority date: 2017-02-10
Filing date: 2017-02-17
Publication date: 2018-08-16
Also published as: KR20180093189A; KR101918837B1

Abstract

Disclosed is a hydraulic breaker comprising: a cylinder having a plurality of hydraulic ports; a piston reciprocating inside the cylinder by means of a hydraulic pressure of a hydraulic fluid flowing in or discharged through the hydraulic ports; a contamination level sensor provided on hydraulic lines connected to the hydraulic ports and for detecting contamination level information comprising the inflow contamination level with respect to the inflow hydraulic fluid and the discharge contamination level with respect to the discharged hydraulic fluid; and a transmission module for, if the hydraulic fluid is determined for contamination on the basis of the detected contamination level information and is determined to be contaminated, outputting the contamination level information to a controller for performing a warning operation.

Description

Hydraulic breakers, hydraulic monitoring systems and hydraulic monitoring methods

The present invention relates to a hydraulic breaker, a hydraulic oil monitoring system and a hydraulic oil monitoring method, and more particularly, to a breaker having a cylinder and a piston moved on the cylinder, a hydraulic oil monitoring system and a hydraulic oil monitoring method.

A breaker is a device used to crush a rock by hitting a chisel in contact with an object through a reciprocating motion of a piston, and a hydraulic attachment form that is mounted on a heavy equipment vehicle such as an excavator is mainly used in a large construction site. .

Rock crushing work is one of the important factors due to the construction period, etc. the speed of work. Therefore, the conventional breaker has a long stroke mode that increases the stroke distance of the piston so that the impact force is strengthened for hard rock crushing according to the operator's operation, and the shot speed is improved even when sacrificing some impact force for soft rock crushing. It is configured to change the short stroke mode.

On the other hand, the piston reciprocating on the cylinder may be scratched on the outer surface when the hydraulic fluid is contaminated due to the inflow of foreign matter, such that the oil film is broken, causing unintentional friction between the piston and the cylinder. Such friction can increase the debris generated from the piston and the cylinder surface, and the vicious cycle can be repeated which worsens the contamination of the working oil. As a result, contamination of the hydraulic fluid can have serious consequences on the performance and durability of the piston, such as increased vibration and reduced impact force of the piston.

The present invention is to solve the above problems, to detect whether the hydraulic oil of the hydraulic breaker is contaminated, and analyzes the pollution degree information to inform the user according to a predetermined condition or hydraulic breaker, hydraulic oil for controlling the movement of the piston It is to provide a system and a method for monitoring oil.

The problem to be solved by the present invention is not limited to the above-described problem, the objects that are not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings. .

According to an aspect of the present invention, a hydraulic breaker, a cylinder having a plurality of hydraulic ports, a piston reciprocating in the cylinder by the hydraulic pressure of the hydraulic oil flowing in or out through the hydraulic port, the hydraulic pressure connected to the hydraulic port Installed on the line, the pollution degree sensor for detecting pollution degree information including inflow pollution degree for the incoming hydraulic oil and discharge pollution degree for the discharged hydraulic oil and the detected pollution degree information to determine whether or not the hydraulic fluid is contaminated If it is determined that the contamination is a hydraulic breaker including a transmission module for outputting the pollution degree information to the controller for performing a warning operation.

According to an aspect of the present invention, monitoring the contamination of the hydraulic oil of the hydraulic breaker having a cylinder having a plurality of hydraulic ports and a piston reciprocating in the cylinder by the hydraulic pressure of the hydraulic oil flowing in or out through the hydraulic port A hydraulic oil monitoring system, comprising: a pollution degree sensor installed on a hydraulic line connected to the hydraulic port, and configured to detect pollution degree information including an contamination level of an inflow pollution concerning the incoming hydraulic fluid and an emission pollution level of the discharged hydraulic oil; A hydraulic fluid monitoring system may be provided that includes a controller configured to perform a warning operation by determining that the hydraulic fluid is contaminated when the predetermined condition is satisfied based on the pollution degree information.

According to an aspect of the present invention, a method for monitoring hydraulic fluid, comprising: a chisel hitting an object according to a reciprocating motion of a piston in a cylinder, and a contamination sensor provided on a hydraulic line connected to a hydraulic port provided on the cylinder A hydraulic fluid monitoring method may include providing a pollution degree information regarding hydraulic oil flowing into or out of the furnace, and performing a warning operation when a controller satisfies a predetermined condition based on the detected pollution degree information.

Means for solving the problems of the present invention are not limited to the above-described solutions, and the solutions not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings. Could be.

According to the hydraulic breaker, the hydraulic fluid monitoring system and the hydraulic fluid monitoring method according to an embodiment of the present invention, when the pollution degree information of the hydraulic fluid is sensed and the warning is made to the user according to a predetermined condition when judging based on the detected pollution degree information, By controlling the movement of the, it is effective in maintaining the performance and durability of the hydraulic breaker. The warning for notifying the user may include a degree of contamination of the hydraulic oil, a need for replacement of the hydraulic oil, and whether parts such as a piston are damaged.

The effects of the present invention are not limited to the above-described effects, and effects that are not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a schematic diagram of construction equipment including a hydraulic breaker according to an embodiment of the present invention.

2 is a schematic view of a hydraulic breaker according to an embodiment of the present invention.

3 is an exploded perspective view of a hydraulic breaker according to an embodiment of the present invention.

4 is a circuit diagram of a hydraulic breaker according to an embodiment of the present invention.

5 and 6 are diagrams illustrating pollution degree information detected by a pollution degree sensor according to an exemplary embodiment of the present invention.

7 is a schematic structural diagram of a hydraulic oil monitoring system according to an embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention may deteriorate other inventions or the present invention by adding, modifying, or deleting other elements within the scope of the same idea. Other embodiments that fall within the scope of the inventive concept may be readily proposed, but they will also be included within the scope of the inventive concept.

In addition, the components with the same functions within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

In the above description of the configuration and features of the present invention based on the embodiment according to the present invention, the present invention is not limited thereto, and various changes or modifications can be made within the spirit and scope of the present invention. It will be apparent to those skilled in the art that such changes or modifications fall within the scope of the appended claims.

In addition, the hydraulic port includes a forward port connecting the hydraulic source and the rear chamber of the cylinder for the forward and backward movement of the piston, the forward port, the rear chamber from the hydraulic source during the forward movement of the piston Hydraulic oil is supplied in the direction, hydraulic fluid is discharged from the rear chamber toward the hydraulic source during the backward movement of the piston, and the contamination sensor is disposed on the hydraulic line connected to the forward port, The inflow contamination level of the hydraulic oil flowing in the direction of the rear chamber from the hydraulic source may be sensed, and the discharge pollution degree of the hydraulic fluid discharged from the rear chamber toward the hydraulic source during the backward movement of the piston.

In addition, the hydraulic port includes a reverse port connecting the hydraulic source and the front chamber of the cylinder for the backward movement of the piston and a discharge port for discharging the hydraulic oil from the front chamber for the forward movement of the piston, The sensor is installed on a hydraulic line connected to the reverse port and the hydraulic source and installed on an oil pressure line connected to the inlet contamination sensor and the discharge port to detect the oil contamination level of the hydraulic oil flowing into the front chamber. It may include a discharge pollution sensor for detecting the discharge pollution of the operating oil discharged from the front chamber.

In addition, the discharge port may include a hydraulic tank port for discharging the hydraulic oil from the front chamber in the direction of the hydraulic tank, the discharge pollution sensor may be installed on the hydraulic line connected to the hydraulic tank port.

According to another aspect of the present invention, the degree of contamination of the hydraulic oil of the hydraulic breaker having a cylinder having a plurality of hydraulic ports and a piston reciprocating in the cylinder by the hydraulic pressure of the hydraulic oil flowing in or out through the hydraulic port is monitored A hydraulic oil monitoring system, comprising: a pollution degree sensor installed on a hydraulic line connected to the hydraulic port, and configured to detect pollution degree information including an contamination level of an inflow pollution concerning the incoming hydraulic fluid and an emission pollution level of the discharged hydraulic oil; When the predetermined condition is satisfied based on the pollution degree information, the hydraulic oil monitoring system may include a controller configured to perform a warning operation by determining that the hydraulic oil is contaminated.

The predetermined condition may be a condition that a contamination value of the pollution degree information is equal to or greater than a predetermined reference contamination value.

The predetermined condition may be a condition in which the frequency of the contamination value of the pollution degree information is greater than or equal to a predetermined reference contamination value.

The predetermined condition may be a condition in which a difference value between the inflow pollution level of the pollution degree information and the emission pollution degree of the pollution degree information is equal to or greater than a predetermined reference difference value.

In addition, the inflow pollution degree and the discharge pollution degree may be a pollution degree with respect to the hydraulic oil flowing in and the hydraulic oil discharged when the piston reciprocates once.

The controller may further include an output module configured to output a video or audio signal.

If it is determined that the hydraulic oil is contaminated, it may output a warning message through the output module.

The controller may stop the reciprocating motion of the piston when it is determined that the hydraulic oil is contaminated.

And-the hydraulic breaker connects the hydraulic source and the rear chamber of the cylinder for the forward movement of the piston or the control valve for discharging the hydraulic oil from the rear chamber of the cylinder for the backward movement and the flow of the hydraulic oil. And further comprising a shutoff valve for selectively blocking the controller. The controller may control the shutoff valve so that the shutoff valve blocks the flow of the hydraulic oil when it is determined that the hydraulic oil is contaminated.

And-the shutoff valve selectively shuts off the flow of the hydraulic oil directed to the control valve-the controller is configured to shut off the shutoff valve so that the shutoff valve shuts off the flow of the hydraulic oil when it is determined that the hydraulic oil is contaminated. Can be controlled.

The apparatus may further include an output module configured to output an image or an audio, wherein the controller outputs a warning message through the output module when the pollution value of the pollution degree information is greater than or equal to a first reference pollution value, and the pollution value of the pollution degree information. The reciprocating motion of the piston may be stopped when the second reference contamination value is greater than the first reference contamination value.

Further, according to another aspect of the invention, the chisel hitting the object in accordance with the reciprocating motion of the piston in the cylinder, the contamination sensor provided on the hydraulic line connected to the hydraulic port provided on the cylinder is introduced into the cylinder or A hydraulic fluid monitoring method may include providing a pollution degree information regarding the discharged hydraulic oil, and performing a warning operation when a controller satisfies a predetermined condition based on the detected pollution degree information.

In the accompanying drawings, in order to clearly express the technical idea of the present invention, a configuration that is not related to the technical idea of the present invention is simplified or omitted.

First, to define a term for the direction, the height direction may mean the up and down direction with reference to Figures 2, 3 and 4.

As shown in FIG. 1, as an example, the construction equipment 100 is equipment for performing a hitting operation on an object. Construction equipment 100 for the blow operation is mainly implemented in the form that the hydraulic breaker 1000 is mounted as an attachment to a heavy-duty vehicle such as an excavator.

The hydraulic breaker 1000 is a device that performs an operation of hitting an object.

Of course, the hydraulic breaker 1000 in the present invention is not limited to the above-described examples, it should be understood as a concept encompassing all other types of hitting device that performs a function of hitting the object in addition to the hydraulic breaker.

The hydraulic breaker 1000 is generally, but not necessarily, an attachment type mounted to a heavy-duty vehicle, ie, the carrier 120, and may also exist in an independent form from the carrier 120, such as a form directly handled by an operator.

More detailed description of the hydraulic breaker 1000 will be described later.

The carrier 120 may be largely divided into a driving body 121 and a rotating body 122.

The traveling body 121 is mainly provided in a crawler type or a wheel type, and in some cases, may be a crane type or a truck type.

The rotating body 122 is mounted on the traveling body 121 to be rotatable about an axis in a direction perpendicular to the ground.

The rotating body 122 is provided with a connecting member 123 such as a boom or an arm. The end of the connection member 123 may be detachably attached to the hydraulic breaker 1000 in the form of an attachment or fastened through the coupler 140.

The connecting member 123 is mainly two or more members are fastened in a link manner, connected to the cylinder can be bent or stretched by the expansion and contraction of the cylinder, stretching operation and the like. The connection member 123 may position the hydraulic breaker 1000 attached to the end by the operation on the hit.

In addition, the carrier 120 may apply hydraulic pressure to the hydraulic breaker 1000 so that the mounted hydraulic breaker 1000 may operate, or in addition, the parts of the carrier 120 including the boom or the arm may be hydraulically applied to the coupler 140, or the like. Hydraulic source 160 for supplying the hydraulic tank 160a for storing the operating oil may be installed.

In addition, a cabin 124 on which the operator boards is provided on the rotating body 122 so that the user can operate the carrier 120 or the hydraulic breaker 1000 by using a manipulation device such as a handle, a lever, or a button in the cabin 124. Can be.

Hereinafter, a hydraulic breaker 1000 according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3.

2 and 3, as an example, the hydraulic breaker 1000 may include a mounting bracket 1200, a main body 1400, and a chisel 1600. The main body 1400 is a site for generating the striking force in the hydraulic breaker 1000, and has a cylinder 1430 and a piston 1440 accommodated in the cylinder 1430 therein for the hydraulic oil applied from the hydraulic source 160. As the piston 1440 reciprocates by hydraulic pressure, it generates a striking force. The chisel 1600 is a portion for directly hitting the hitting object, and the lower side of the main body 1400 (the piston 1440 in the following description) moves forward (extension) so that its upper end hits the lower end of the piston 1440. It defines downward, and is arrange | positioned in the upward direction defining the direction which the piston 1440 reverses (reduces) upward.

The mounting bracket 1200 is coupled to the upper end of the main body 1400, and is configured to connect the carrier 120 and the main body 1400.

The main components of the main body 1400 may be the cylinder 1430 and the piston 1440.

In one example, the piston 1440 is provided in a cylindrical shape, the cylinder 1430 may be provided in a hollow cylindrical shape so that the piston 1440 is inserted to reciprocate.

The inner surface 1437 of the cylinder is provided with various

hydraulic ports

1433, 1434, 1435, 1436, and 1438 for supplying hydraulic pressure to the interior of the cylinder 1430 or for discharging the hydraulic pressure from the interior of the cylinder 1430.

The piston 1440 includes at least a small diameter portion 1446, a first large diameter portion 1444 positioned above the small diameter portion 1446, and a second large diameter portion 1442 positioned below the small diameter portion 1446. Can be.

As the hydraulic pressure applied to the inside of the cylinder 1430 through the hydraulic port acts on the step surfaces 1444a and 1442a formed by the first large diameter portion 1444 and the second large diameter portion 1442, the piston 1440 acts as a cylinder. It is possible to reciprocate forward and backward within 1430.

Therefore, by properly designing the stepped

surfaces

1444a and 1442a of the hydraulic port or the piston 1440 formed in the cylinder 1430, it is possible to control not only the simple piston 1440 but also the stroke distance of the piston 1440. have.

The front head 1450 and the head cap 1420 may be connected to the lower and upper ends of the cylinder 1430, respectively.

The front head 1450 is provided with a chisel pin (not shown) on which the chisel 1600 is placed, and the chisel 1600 is hit by the lower end of the piston 1440 when the piston 1440 is advanced by the chisel pin (not shown). Be placed in the proper position.

In addition, the front head 1450 includes a dust protector (not shown) for preventing foreign matter from entering the cylinder 1430 when the piston 1440 is reciprocated, or a sound absorbing member (not shown) for reducing the impact sound. Can be installed as

The head cap 1420 has a gas chamber (not shown) therein, and the gas chamber may give an appropriate damping effect to the piston 1440 as its volume is compressed when the piston 1440 is retracted.

The structure or structure of the hydraulic breaker 1000 described above is only one embodiment of the hydraulic breaker 1000 according to the present invention, and the hydraulic breaker 1000 according to the present invention may be similar to the above-described configuration or structure, although somewhat different. It is to be understood that other striking devices having functions are also included.

Hereinafter, a circuit diagram of a hydraulic breaker 1000 according to an embodiment of the present invention will be described with reference to FIG. 4.

As shown in FIG. 4, a piston 1440 is inserted into the cylinder 1430, and a chisel 1600 is disposed below the piston 1440.

The piston 1440 may include the small diameter portion 1446, the first large diameter portion 1444 positioned above the small diameter portion 1446, and the second large diameter portion 1442 positioned below the small diameter portion 1446. have.

The outer diameter of the first large diameter portion 1444 and the second large diameter portion 1442 may be substantially the same as the inner diameter of the cylinder 1430, and thus, the lower side and the second large portion of the cylinder 1430 may be disposed inside the cylinder 1430. The front chamber 1431 may be formed between the necks 1442, and the rear chamber 1432 may be formed between the upper side of the cylinder 1430 and the first large diameter part 1444.

A reverse port 1433 is formed in the front chamber 1431, and the reverse port 1433 may be connected to the hydraulic source 160 through the reverse line 1433a.

Accordingly, hydraulic pressure may be applied to the front chamber 1431 by the hydraulic oil flowing from the hydraulic source 160 through the reverse line 1433a to the reverse port 1433.

The hydraulic pressure applied to the front chamber 1431 may act on the stepped surface 1442a of the second large diameter portion 1442, and a reverse force may be applied to the piston 1440.

A forward port 1434 is formed in the rear chamber 1432, and the forward port 1434 may be connected to the control valve 1460 through the forward line 1434a.

The control valve 1460 may be disposed in either one of the forward position 1460-2 or the reverse position 1460-1, and the forward position 1460-2 may move the forward line 1434a to the hydraulic source 160. ), And the forward line 1434a may be connected to the hydraulic tank 160a in the reverse position 1460-1.

Therefore, when the control valve 1460 is disposed in the forward position 1460-2, the rear chamber 1432 flows into the forward port 1434 from the hydraulic source 160 via the control valve 1460 and the forward line 1434a. Hydraulic pressure may be applied by the working oil to be.

The hydraulic pressure applied to the rear chamber 1432 acts on the stepped surface 1444a of the first large diameter portion 1444, and a forward force is applied to the piston 1440.

In addition, when the control valve 1460 is disposed in the reverse position 1460-1, the rear chamber 1432 is connected to the hydraulic tank 160a via the forward line 1434a and the control valve 1460, and the forward position ( The hydraulic oil introduced into the rear chamber 1432 in 1460-2 is discharged to the hydraulic tank 160a.

In this structure, the stepped surface 1444a of the first large diameter portion 1444 has an area larger than the stepped surface 1442a of the second large diameter portion 1442 so that the control valve 1460 is positioned at the forward position 1460-2. When placed, the forward force may be greater than the backward force so that the piston 1440 may advance.

On the contrary, when the control valve 1460 is disposed in the reverse position 1460-1, the hydraulic pressure applied from the hydraulic source 160 acts only on the step surface 1442a of the second large diameter portion 1442 so that the piston 1440 moves backward. can do.

As a result, the reciprocating motion of the piston 1440 can be implemented as the control valve 1460 is disposed in the forward position 1460-2 or the backward position 1460-1.

In one example, the position control of the control valve 1460 may be hydraulic.

That is, the control valve 1460 may be a hydraulic valve in which the forward position 1460-2 and the reverse position 1460-1 may be selected according to the input hydraulic signal.

Both ends of the control valve 1460 may be provided with a forward action surface 1464 and a reverse action surface 1462 respectively connected to the hydraulic line.

Here, the forward action surface 1464 may be connected to the forward control line 1464a branched into the long stroke line 1435a and the short stroke line 1434a.

Reverse action surface 1462 may be connected to hydraulic source 160 via reverse control line 1462a.

In this structure, the forward acting surface 1464 has an area larger than the backward acting surface 1462, so that when the hydraulic pressure is applied to both acting surfaces, the control valve 1460 may be disposed at the forward position 1460-2. Accordingly, the piston 1440 may move forward.

On the contrary, if the hydraulic pressure applied from the hydraulic source 160 is applied only to the reverse action surface 1462, the control valve 1460 may be disposed from the forward position 1460-2 to the reverse position 1460-1, and thus the piston 1440 may reverse.

The long stroke line 1435a is connected to the long stroke port 1435 formed in the cylinder 1430. The long stroke port 1435 may be formed between the forward port 1434 and the reverse port 1433 of the cylinder 1430 to be connected or disconnected from the front chamber 1431 according to the position of the piston 1440.

Specifically, the long stroke port 1435 has a front chamber 1431 when the piston 1440 is advanced so that the second large diameter portion 1442 is on the long stroke port 1435 or located below the long stroke port 1435. The connection with is cut off.

On the contrary, the long stroke port 1435 is connected to the front chamber 1431 when the piston 1440 is backward and the second large diameter portion 1442 is positioned above the long stroke port 1435.

Therefore, when the long stroke port 1435 is connected with the front chamber 1431, the hydraulic pressure from the hydraulic source 160 is reverse line 1433a, the reverse port 1433, the front chamber 1431, the long stroke port 1435. The control valve 1460 may be disposed at the forward position 1460-2 by being sequentially applied to the forward action surface 1464 through the long stroke line 1435a and the forward control line 1464a.

The short stroke line 1436a may be connected to the short stroke port 1434 formed in the cylinder 1430. The short stroke port 1436 is formed between the forward port 1434 and the reverse port 1433 of the cylinder 1430 to be connected to or disconnected from the front chamber 1431 according to the position of the piston 1440, and the long stroke It may be formed at a position closer to the reverse port 1433 than to the port 1435.

Specifically, the short stroke port 1434 is in contact with the front chamber 1431 when the piston 1440 is advanced so that the second large diameter portion 1442 is on the short stroke port 1434 or located ahead of the short stroke port 1434. The connection is cut off.

On the contrary, the short stroke port 1434 is connected to the front chamber 1431 when the piston 1440 is backward and the second large diameter portion 1442 is located behind the short stroke port 1434.

Here, a shift valve 1470 may be provided on the short stroke line 1436a to control a short circuit of the short stroke line 1436a.

The shift valve 1470 may be selectively disposed at any one of the long stroke position 1470-1 and the short stroke position 1470-2, and the short stroke line 1436a at the long stroke position 1470-1. ) And the short stroke line 1434a is connected at the short stroke position 1470-2.

Accordingly, the long stroke mode and the short stroke mode of the piston 1440 may be determined by the shift valve 1470.

In one example, the shift valve 1470 is disposed in the short stroke position 1470-2 and the second large diameter portion 1442 is located behind the short stroke port 1434 such that the short stroke port 1434 and the front chamber 1431 are positioned. Hydraulic fluid is connected to the hydraulic source 160, the reverse line 1433a, the reverse port 1433, the front chamber 1431, the short stroke port 1434, the shift valve 1470, and the forward action surface 1464. Can be reached sequentially.

With this structure, the piston 1440 may selectively perform reciprocating motion in the long stroke mode and the short stroke mode according to the position of the shift valve 1470.

For example, the shift valve 1470 may automatically switch between the long stroke position 1470-1 and the short stroke position 1470-2 by the controller 180, and the long stroke position may be selected by the user. Switching between 1470-1 and the short stroke position 1470-2 may be performed.

Looking at the flow of the hydraulic fluid during the reciprocating motion of the piston 1440, for example, during the backward movement of the piston 1440, the hydraulic fluid from the hydraulic source 160 via the reverse port 1433a along the reverse line 1433a to the front chamber (1431). When the short stroke port 1434 opens as the piston 1440 retracts, the hydraulic fluid is discharged from the front chamber 1431 along the short stroke line 1434a. When the long stroke port 1435 is opened as the piston 1440 further retracts, the hydraulic oil is discharged from the front chamber 1431 along the long stroke line 1435a. On the other hand, in the rear chamber 1432, the working oil is discharged along the advance line 1434a via the advance port 1434.

In the forward movement of the piston 1440, the working oil flows into the rear chamber 1432 via the forward port 1434 along the forward line 1434a. On the other hand, in the front chamber 1431, the hydraulic oil is discharged along the hydraulic tank line 1438a via the hydraulic tank port 1438.

The pollution degree sensor 150 may be provided on a hydraulic line connected to the cylinder to detect the degree of contamination of the working oil flowing into or out of the cylinder to cause the piston to reciprocate.

In one example, the pollution degree sensor 150 may be provided to the advance line 1434a.

For example, the pollution degree sensor 150 may include an inflow pollution degree sensor 150a or 150b and an emission

pollution degree sensor

150a, 150c, 150d or 150e.

Inflow contamination sensors 150a and 150b may be provided on the inflow line 1433a which is a line into which the hydraulic fluid flows into the cylinder 1430, and the

exhaust pollution sensors

150a, 150c, 150d, and 150e may be provided in the cylinder. 1430 is provided to at least one of the long stroke line 1435a, the short stroke line 1436a, and the hydraulic tank line 1438a, which is a line through which the hydraulic oil is discharged to the outside, to detect the degree of contamination of the hydraulic oil flowing through each hydraulic line Can be. Here, when it is determined that the working oil is contaminated, it is possible to specify the chamber causing the contamination by specifying the position of the pollution degree sensor.

The hydraulic breaker 1000 may further include a shutoff valve 1480 for selectively blocking the flow of the hydraulic oil.

The shutoff valve 1480 may be installed in a line through which the hydraulic oil is moved, and may selectively allow the flow of the hydraulic oil, or block the flow of the hydraulic oil.

In one example, the shutoff valve 1480 may allow the flow of the hydraulic oil in the connecting position (1480-2), and may block the flow of the hydraulic oil in the blocking position (1480-1).

In one example, the shutoff valve 1480 is installed on the forward control line 1464a and moves forward from the long stroke port 1435 to the forward action surface 1464 from the hydraulic oil or the short stroke port 1434 to the forward action surface 1464. Allows the flow of hydraulic fluid to be transported to and may be blocked.

If the shutoff valve 1480 is disposed at the shutoff position 1480-1 to block the flow of the hydraulic oil, no hydraulic pressure is applied to the forward action surface 1464, so that the control valve 1460 is moved backward. Cannot be converted from 1) to the advance position 1460-2.

Accordingly, hydraulic fluid is not supplied from the hydraulic source 160 to the rear chamber 1432 by the control valve 1460 in the reverse position 1460-1, so that the reciprocating motion of the piston 1440 may be stopped.

The installation position of the shutoff valve 1480 is not limited to the above-mentioned position, but may be installed on the reverse line 1433a or may also be installed on the advance line 1434a.

Hereinafter, a description will be given of a hydraulic fluid monitoring technology using the pollution degree information of the hydraulic oil detected from the pollution degree sensor 150.

Debris may penetrate into the hydraulic fluid passing through the front chamber 1431 and the rear chamber 1432 to generate a reciprocating motion of the piston 1440, during the striking of the hydraulic breaker 1000. Alternatively, the scratch generated on the piston 1440 may cause friction between the inside of the cylinder 1430 and the surface of the piston 1440, which may cause debris to contaminate the hydraulic fluid. In addition, the contamination of the hydraulic fluid may increase due to various reasons, such as a failure of the hydraulic oil itself, which is directly connected to the performance and durability of the hydraulic breaker 1000, as described above, and thus needs to be detected and managed.

As an example, a pollution degree sensor 150 may be provided to detect the pollution level of the working oil. The pollution degree sensor 150 may be provided on the reverse line 1433a to detect inflow contamination information of the hydraulic oil flowing into the front chamber 1431, and the pollution degree information of the hydraulic oil flowing into or discharged into the rear chamber 1432 may be provided. It may be provided on advance line 1434a for sensing. In addition, it may be provided on the short stroke line (1436a), long stroke line (1435a), hydraulic tank line (1438a) in order to detect the discharge pollution degree information of the hydraulic oil discharged out of the front chamber (1431).

For example, the pollution degree sensor 150 may be a turbidity sensor using an optical sensor including a light emitting unit for outputting an optical signal and a light receiving unit for receiving the optical signal and outputting a corresponding current flow. Although it may be an electric conductivity sensor that detects an electric conductivity, the present invention is not limited thereto, and any sensor capable of detecting whether or not the oil is contaminated or whether or not a float or debris is present in the oil is contaminated. Can be used).

For example, in the case of an optical sensor using light scattering, the scattering pattern may vary according to the light source and the particle size. Since the particle size can be derived by analyzing the scattering pattern of the light sensed in the hydraulic fluid, the user can be provided with information on the particle size, if necessary.

For example, in the case of an electrical conductivity sensor, since the change in electrical conductivity may show various patterns according to the type of particles, the user may be provided with information on the particle type by analyzing it.

For example, by analyzing the type and size of particles causing contamination of the working oil, various information, such as the cause and region of occurrence of the contamination, a fragment of the piston, and a fragment of the strike target, can be derived.

For example, the hydraulic breaker 1000 may be further provided with a transmission module (not shown).

In one example, the transmission module may be configured to output pollution degree information to the controller 180.

For example, the transmission module may be configured to receive the pollution degree information detected by the pollution degree sensor 150 from the pollution degree sensor 150 and transmit the pollution degree information to the controller 180.

For example, the transmission module may output the pollution degree information from the pollution degree sensor 150 to the controller 180 through wired communication, and may output the pollution degree information from the pollution degree sensor 150 to the controller 180 through wireless communication.

Representative examples of wireless communication of the transmission module may include Bluetooth Low Energy (BTLE) or Zigbee. Since the communication between the pollution degree sensor 150 and the controller 180 does not require a high bandwidth, low power communication such as BTLE or direct rain may be desirable.

However, in the present invention, the communication method between the controller 180 and the pollution degree sensor 150 is not necessarily limited thereto.

The controller 180 may determine whether the hydraulic oil of the piston 1440 is contaminated based on the detected contamination degree information.

For example, the controller 180 may perform a warning operation when it is determined that the hydraulic oil is contaminated. The warning for notifying the user may include a degree of contamination of the hydraulic oil determined based on the pollution degree information detected by the pollution degree sensor, a need for replacement of the hydraulic oil, and whether parts such as a piston are damaged.

For example, the controller 180 is an electronic circuit that processes and calculates various electronic signals. The controller 180 receives pollution degree information or a signal from the pollution degree sensor 150, and calculates and processes information / data. Other configurations of the breaker 1000 and construction equipment 100 can be controlled.

The controller 180 is typically located on the carrier 120, but may also be located on the hydraulic breaker 1000.

In addition, the controller 180 does not necessarily need to be implemented as a single object.

In some cases, the controller 180 may be implemented as a plurality of controllers 180 that can communicate with each other.

For example, the controller 180 may be distributedly disposed such that a part thereof is installed on the hydraulic breaker 1000 side and the other part is installed on the carrier 120, and the controller 180 is wirelessly distributed between the distributed controllers 180. You can do that by collaborating by performing wired communication.

For example, when a plurality of controllers 180 are distributed, some of them simply transmit signals or information to a slave type, and others receive various signals or information to a master type to process / operate and command / It may also take the form of performing control.

The description of the controller 180 will be described in more detail when describing the oil monitoring system below.

Hereinafter, the hydraulic oil monitoring system will be described in detail.

The hydraulic oil monitoring system is a system for monitoring the contamination of the hydraulic oil which is the power causing the reciprocating motion of the piston 1440 in the hydraulic breaker 1000 described above.

For example, the monitoring system may monitor whether the working oil is contaminated by using the pollution degree information detected by the pollution degree sensor 150 described above. In addition, if the monitoring determines that the working oil is contaminated, a warning operation may be performed.

Here, the hydraulic fluid monitoring system may include a pollution degree sensor 150 and a controller 180, and when the controller 180 satisfies a predetermined condition based on the pollution degree information detected from the pollution degree sensor 150, the hydraulic oil may be It may be considered contaminated and a warning action may be taken.

The predetermined condition may be a reference condition for determining whether the hydraulic oil is contaminated.

For example, the controller 180 may determine that the working oil is contaminated when the degree of contamination information detected from the pollution degree sensor 150 or data calculated / converted based on the degree of contamination information satisfies a predetermined condition. If it is not satisfied, it can be determined that the working oil is in a normal state.

The predetermined condition may be set by the user or may be set based on the pollution degree information obtained from the pollution degree sensor 150 in a normal state in which the working oil is not polluted.

In addition, the hydraulic fluid monitoring system may further include an output module 190 for outputting an image or an audio.

The module may further include an output module 190. The output module 190 may be implemented as, for example, an image output module that mainly outputs an image or an audio output module that outputs an audio.

Of course, in addition to the two, various output devices for transmitting information to the user may be adopted as the output module 190.

The output module 190 may directly output an image or an audio to a user, and may be configured to include a USB port for transmitting an image / audio signal to another device that directly outputs an image or an audio to a user.

The output module 190 may be a component capable of outputting an image or an audio and outputting a warning message about the oil contamination to the user.

For example, the output module 190 may be installed in the breaker 1000 or may be installed in the carrier 120.

In one example, the controller 180 may control the output module 190 to output a warning message about the oil contamination to the user through the output module 190.

The controller 180 and the output module 190 may enable wired communication or wireless communication.

Here, as an example, as shown in FIG. 5, the predetermined condition may be a condition that the contamination value of the pollution degree information is equal to or greater than the predetermined reference contamination values K1 and K2.

For example, as shown in FIG. 4, the hydraulic breaker 1000 may be provided with a first pollution degree sensor 150a on the advance line 1434a.

The first pollution degree sensor 150a may detect the contamination level of the hydraulic oil flowing into the rear chamber 1432 during the forward movement of the piston 1440, and may be discharged from the rear chamber 1432 during the backward movement of the piston 1440. The degree of pollution of the discharged oil can be detected.

That is, the first pollution degree sensor 150a may be an inflow pollution degree sensor, and at the same time, it may be an emission pollution degree sensor.

For example, FIG. 5 illustrates pollution degree information detected by the first pollution degree sensor 150a. Here, the larger the contamination value, the more the contamination of the hydraulic oil has progressed. Pollution degree information of the hydraulic oil flowing into the rear chamber 1432 while the piston 1440 is advanced is detected at a time interval of 0 to t1, t2 to t3, and t4 to t5, and the rear chamber ( Contamination information of the hydraulic oil discharged from 1432) is detected in the time t1 ~ t2, t3 ~ t4, t5 ~ t6.

For example, K1 and K2 are predetermined reference contamination values, and when the detected contamination value is K1 or more as in the sections t1 to t2 and K2 or more in the sections t3 to t4 and t5 to t6, the predetermined condition is satisfied. The controller 180 performs a predetermined operation of notifying the user of pollution degree information.

For example, the predetermined condition may be a condition in which the frequency of the contamination value of the hydraulic oil is equal to or greater than the predetermined reference contamination value K1 and K2.

Here, as an example, when the contamination sensor is an optical sensor or an electrical conductivity sensor, the turbidity or the electrical conductivity may be temporarily different due to the direction of the fragment, the nonuniformity of impurities, and the like. As a result, even when the degree of contamination of the working oil is not serious, a case where the oil is temporarily detected to be higher than the predetermined reference contamination values K1 and K2 may occur. In order to prevent this, the piston 1440 detects the degree of contamination of the hydraulic oil introduced or discharged during the reciprocating motion a plurality of times, and compares the number of times that the hydraulic oil is greater than or equal to a predetermined reference contamination value with respect to the total number of piston reciprocating motions. The frequency at which the contamination value is equal to or greater than a predetermined reference contamination value is obtained. Only when the acquired frequency is more than a predetermined reference frequency value, it is determined that the working oil is contaminated, thereby excluding errors and securing a high level of reliability. For example, as shown in FIG. 5, in six sections from 0 to t6, three times when the contamination value is K1 or more, and two times when K2 or more is detected, the predetermined reference frequency value is set to 40%. In this case, since it is equal to or greater than the predetermined reference frequency value for K1, the controller 180 can send a warning message, and since the K2 is less than or equal to the predetermined reference frequency value, the controller 180 does not take any action.

In addition, as an example, by detecting the contamination level of the hydraulic oil flowing in or out within a predetermined time, the frequency of the contamination value of the hydraulic fluid is more than the predetermined reference contamination value may be a condition of more than the predetermined reference frequency value.

That is, for example, when the contamination value is greater than or equal to K1 within three times from 0 to t6, the controller 180 may determine that the hydraulic oil is contaminated.

For example, when the difference between the contamination value of the incoming hydraulic oil and the contamination value of the discharged hydraulic oil is equal to or more than a predetermined reference difference value DELTA K, the controller 180 notifies the user of the contamination level information as it satisfies a predetermined condition. Perform a predetermined operation.

For example, the contamination value of the hydraulic oil flowing in and the pollution value of the hydraulic oil discharged may be pollution values of the hydraulic oil and the hydraulic oil introduced during one continuous backward movement and one forward movement of the piston 1440. In this case, it is possible to increase the accuracy of the hydraulic oil monitoring system by identifying the degree of contamination increased by one reciprocating motion, that is, specifying the degree of impurities generated by any one reciprocating motion.

Also as an example, as shown in FIG. 4, the hydraulic breaker 1000 may be provided with a second pollution degree sensor 150b on the reverse line 1433a, and a third pollution degree sensor on the hydraulic tank line 1438a. 150c may be provided on the long stroke line 1435a, the fourth pollution degree sensor 150d, and the fifth pollution degree sensor 150e on the short stroke line 1436a, respectively.

The second pollution degree sensor 150b may detect a pollution degree of the working oil flowing into the front chamber 1431 during the backward movement of the piston 1440, and the third pollution degree sensor 150c may detect the contamination during the forward movement of the piston 1440. The degree of contamination of the hydraulic oil discharged from the chamber 1431 can be detected.

When the piston 1440 reciprocates according to the long stroke mode, the fourth pollution degree sensor 150d may detect a degree of contamination of the hydraulic oil discharged from the front chamber 1431 as the long stroke port 1435 is opened. When the piston 1440 reciprocates according to the short stroke mode, the fifth pollution degree sensor 150e may detect a degree of contamination of the hydraulic oil discharged from the front chamber 1431 as the short stroke port 1434 opens.

In FIG. 6, as an example of the inflow contamination sensor, the pollution degree information of the working oil flowing into the front chamber 1431 detected by the second pollution degree sensor 150b provided on the reverse line 1433a is shown in solid lines, and the emission pollution degree sensor As an example, a discharge port-as a whole refers to a port through which the hydraulic oil discharged from the front chamber passes, there may be a short stroke port (1436), a long stroke port 1435, a hydraulic tank port (1438) and the like. The contamination level information of the working oil detected by the third pollution degree sensor 150c, the fourth pollution degree sensor 150d, and the fifth pollution degree sensor 150e provided on the hydraulic line discharged from the front chamber 1431 via a broken line. Illustrated. When used without replacing the hydraulic fluid for a long time as shown in Figure 6 may be gradually increased pollution.

For example, K1 and K2 are predetermined reference contamination values, and if the detected contamination value is K1 or K2 or more, the predetermined condition is satisfied, so that the controller 180 performs a predetermined operation of notifying the user of pollution degree information.

For example, when the controller 180 determines that the working oil is contaminated based on the pollution degree information detected by the first pollution degree sensor 150a, impurities in the cylinder 1430 or scratches generated on the piston 1440 may be used. Where the inducing factor of the hydraulic oil contamination is located may be specified as the rear chamber (1432). The controller 180 may inform the user of the location of the specified contamination causing factor with a warning message.

For example, the controller 180 compares the pollution of the hydraulic oil flowing into the front chamber 1431 from the second pollution degree sensor 150b with the contamination of the hydraulic oil discharged from the front chamber 1431 in the third pollution degree sensor 150c. When it is determined that the hydraulic oil is contaminated, the front chamber 1431 may be located where the inducing factor of the hydraulic oil contamination, such as an impurity inside the cylinder 1430 or a scratch generated on the piston 1440, is located. The controller 180 may inform the user of the location of the specified contamination causing factor with a warning message. The fourth pollution degree sensor 150d and the fifth pollution degree sensor 150e also detect pollution levels of the hydraulic oil discharged from the front chamber 1431, and according to the function of specifying a chamber in which the cause of the hydraulic oil contamination is located, the third pollution degree The same role as the sensor 150c may be performed.

In this case, when the controller 180 determines that the working oil is contaminated, the controller 180 may output a warning message to the user through the output module 190.

In addition, as an example, the controller 180 may stop the reciprocating motion of the piston 1440 when it is determined that the hydraulic fluid is contaminated.

Also, as an example, as shown in FIGS. 5 and 6, the controller 180 may output a warning message to the user through the output module 190 when the pollution value of the pollution degree information is equal to or greater than the first pollution value K1. The reciprocating motion of the piston 1440 may be stopped when the pollution value of the pollution degree information is greater than or equal to the second pollution value K2 greater than the first pollution value K1.

That is, the controller 180 may notify the user of the fact through the output module 190 when the degree of contamination of the hydraulic fluid is a warning level, and the piston 1440 without the user's separate operation when the degree of contamination of the hydraulic fluid is more than the warning level. ) The reciprocating motion can be stopped.

As a result, the controller 180 can prevent damage to the piston 1440 and the cylinder 1430 due to the increase in the degree of contamination of the hydraulic oil of the piston 1440.

For example, the controller 180 may control the shutoff valve 1480 to block the flow of the hydraulic oil when the shutoff valve 1480 determines that the hydraulic oil is contaminated.

For example, when the controller 180 does not control the shutoff valve 1480, the shutoff valve 1480 is in a connection position 1480-2, and when the controller 180 controls the shutoff valve 1480. The shutoff valve 1480 may be changed from the connecting position 1480-2 to the blocking position 1480-1.

That is, the controller 180 may control the shutoff valve 1480 to be changed from the connection position 1480-2 to the shutoff position 1480-1, and as a result, the shutoff valve 1480 controls the flow of hydraulic oil. You can block.

As described above, when the shutoff valve 1480 is converted from the coupling position 1480-2 to the shutoff position 1480-1 by the control of the controller 180, the control valve 1460 is the reverse position 1460-. It is continuously maintained at 1), and as a result, the hydraulic oil of the hydraulic source 160 cannot flow into the rear chamber 1432, so that the reciprocating motion of the piston 1440 may not be implemented.

For example, when the controller 180 determines that the hydraulic oil is contaminated, the controller 180 may control the shift valve 1470 to control the reciprocating motion of the piston 1440.

For example, the controller 180 may control the piston 1440 to change to a short stroke state by controlling the shift valve 1470 when the piston 1440 determines that the hydraulic oil is contaminated in the long stroke state. When the piston 1440 determines that the hydraulic fluid is contaminated in the short stroke state, the piston 1440 may be stopped by controlling the shutoff valve 1480.

The controller 180 may sequentially control the shift valve 1470 and the shutoff valve 1480, so that when the piston 1440 is a long stroke, the controller 180 may sequentially change to a short stroke and stop again at the short stroke.

The user may recognize that the hydraulic fluid is contaminated by changing the reciprocating state of the piston 1440 by the control of the controller 180.

For example, the warning operation of the controller 180 may mean an operation of outputting a warning message to the user through the output module 190 and / or changing the reciprocating motion state of the piston 1440.

Hereinafter, a description will be given of the hydraulic oil monitoring method.

The hydraulic oil monitoring method includes a step in which a chisel strikes an object according to the reciprocating motion of the piston 1440 in the cylinder 1430 (S10), and a pollution degree sensor provided on a hydraulic line connected to a hydraulic port provided on the cylinder 1430. Detecting a pollution degree information on the hydraulic fluid flowing into or out of the cylinder 1430 and performing a warning operation when the controller 180 satisfies a predetermined condition based on the detected pollution degree information ( S30) may be included.

As mentioned above, in order to implement the technical spirit of the present invention, as shown in FIG. 7, the controller 180, the pollution degree sensor 150, the shutoff valve 1480, the shift valve 1470 and the output module ( Wireline communication or wireless communication is possible between 190, and the shutoff valve 1480, the shift valve 1470, and the output module 190 may be controlled by the control of the controller 180.

In addition, the predetermined reference contamination values K1 and K2, the predetermined reference difference value ΔK, and the predetermined reference frequency value may be input by the input unit 195, and the controller 180 is not contaminated with the hydraulic oil. May be calculated and set based on the pollution degree information obtained from the pollution degree sensor 150 at.

Claims

A cylinder having a plurality of hydraulic ports;

A piston reciprocating in the cylinder by the hydraulic pressure of the hydraulic oil flowing in or out through the hydraulic port;

A pollution degree sensor installed on a hydraulic line connected to the hydraulic port and configured to detect pollution degree information including an inflow pollution degree of the incoming hydraulic oil and an emission pollution degree of the discharged hydraulic oil; And

And a transmission module configured to determine whether the operating oil is contaminated based on the detected contamination level information and output the pollution degree information to a controller which performs a warning operation when determining that the operating oil is contaminated.

Hydraulic breaker.
The method of claim 1,

The hydraulic port,

A forward port connecting the hydraulic source and the rear chamber of the cylinder for forward and backward movement of the piston,

The forward port is,

Hydraulic fluid is supplied from the hydraulic source toward the rear chamber during the forward movement of the piston,

Hydraulic fluid is discharged from the rear chamber toward the hydraulic source during the backward movement of the piston,

The pollution degree sensor,

Disposed on a hydraulic line connected to the forward port,

The inflow contamination level of the hydraulic oil flowing in the direction of the rear chamber from the hydraulic source during the forward movement of the piston, the discharge pollution degree of the hydraulic oil discharged in the direction of the hydraulic source from the rear chamber during the backward movement of the piston Detecting,

Hydraulic breaker.
The method of claim 1,

The hydraulic port,

A reverse port connecting the hydraulic source and the front chamber of the cylinder for the backward movement of the piston and a discharge port for discharging the hydraulic oil from the front chamber for the forward movement of the piston,

The pollution degree sensor,

An inlet contamination sensor configured to be installed on a hydraulic line connecting the reverse port and the hydraulic source to detect the inflow contamination of the hydraulic oil flowing into the front chamber and a hydraulic line connected to the discharge port, from the front chamber A discharge pollution degree sensor for detecting the discharge pollution degree of the working oil discharged,

Hydraulic breaker.
The method of claim 3,

The discharge port,

A hydraulic tank port for discharging hydraulic oil from the front chamber in a hydraulic tank direction;

The emission pollution degree sensor,

Installed on the hydraulic line connected to the hydraulic tank port,

Hydraulic breaker.
In a hydraulic oil monitoring system for monitoring the contamination of the hydraulic oil of a hydraulic breaker having a cylinder having a plurality of hydraulic ports and a piston reciprocating in the cylinder by the hydraulic pressure of the hydraulic oil flowing in or out through the hydraulic port,

A pollution degree sensor installed on a hydraulic line connected to the hydraulic port and configured to detect pollution degree information including an inflow pollution degree of the introduced hydraulic oil and an emission pollution degree of the discharged hydraulic oil; And

And a controller configured to perform a warning operation by determining that the hydraulic oil is contaminated when the predetermined condition is satisfied based on the detected pollution degree information.

Hydraulic oil monitoring system.
The method of claim 5,

The predetermined condition is

The contamination value of the pollution degree information is a condition that is more than a predetermined reference pollution value,

Hydraulic oil monitoring system.
The method of claim 6,

The predetermined condition is

The frequency of the contamination value of the pollution degree information is more than a predetermined reference pollution value is more than a predetermined reference frequency,

Hydraulic oil monitoring system.
The method of claim 5,

The predetermined condition is

Wherein the difference value between the inflow pollution degree of the pollution degree information and the emission pollution degree of the pollution degree information is equal to or greater than a predetermined reference difference value;

Hydraulic oil monitoring system.
The method of claim 8,

The inflow pollution degree and the discharge pollution degree,

When the piston reciprocates once, it is the degree of contamination with respect to the hydraulic oil flowing in and the hydraulic oil discharged,

Hydraulic oil monitoring system.
The method of claim 5,

An output module for outputting an image or an audio;

The controller,

If it is determined that the hydraulic fluid is contaminated to output a warning message through the output module,

Hydraulic oil monitoring system.
The method of claim 5,

The controller,

Stopping the reciprocating motion of the piston when it is determined that the hydraulic oil is contaminated,

Hydraulic oil monitoring system.
The method of claim 11,

The hydraulic breaker selectively connects a hydraulic source and the rear chamber of the cylinder for the forward movement of the piston or selectively controls the flow of the hydraulic oil and a control valve for discharging the hydraulic oil from the rear chamber of the cylinder for the backward movement. Also provided with a shutoff valve to shut off-

The controller,

When the hydraulic fluid is determined to be contaminated, the shutoff valve controls the shutoff valve to block the flow of the hydraulic oil,

Hydraulic oil monitoring system.
The method of claim 12,

The shutoff valve selectively shuts off the flow of the hydraulic oil to the control valve;

The controller,

When the hydraulic fluid is determined to be contaminated, the shutoff valve controls the shutoff valve to block the flow of the hydraulic oil,

Hydraulic oil monitoring system.
The method of claim 5,

An output module for outputting an image or an audio;

The controller,

Outputting a warning message through the output module when the pollution value of the pollution degree information is equal to or greater than a first reference pollution value,

Stopping the reciprocating motion of the piston when the contamination value of the pollution degree information is greater than or equal to a second reference contamination value greater than the first reference contamination value,

Hydraulic oil monitoring system.
The chisel hitting the object in accordance with the reciprocating motion of the piston in the cylinder;

Detecting contamination information on the hydraulic oil flowing into or out of the cylinder by a pollution sensor provided on a hydraulic line connected to the hydraulic port provided on the cylinder; And performing a warning operation when a controller satisfies a predetermined condition based on the detected pollution degree information.

How to monitor hydraulic fluid.