KR20180093189A - A hydraulic breaker, hydraulic fluid monitoring system and hydraulic fluid monitoring method - Google Patents

Abstract

The present invention relates to a hydraulic breaker, comprising: a cylinder provided with a plurality of hydraulic ports; a piston reciprocating in the cylinder by a hydraulic pressure of hydraulic fluid introduced or discharged through the hydraulic port; a contamination sensing sensor installed on a hydraulic line connected to the hydraulic port, and detecting contamination information including an inflow contamination level related to the introduced hydraulic fluid and a discharge contamination level related to the discharged hydraulic fluid; and a transmission module determining a contamination level of the hydraulic fluid based on the sensed contamination information, and outputting the contamination information to a controller implementing operation when the hydraulic fluid is determined to be contaminated.

Description

Technical Field [0001] The present invention relates to a hydraulic breaker, a hydraulic oil monitoring system,

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 equipped with 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 for crushing rocks by striking a chisel that touches an object through a reciprocating motion of the piston. In a large construction site, a hydraulic attachment type mounted on a heavy equipment vehicle such as an excavator is mainly used .

Rock crushing work is one of the important factors in the work speed due to the construction period and so on. Accordingly, the conventional breaker has a long stroke mode in which the stroke distance of the piston is lengthened so as to enhance the hitting force for crushing and carcass destruction according to the operation of the operator, and a long stroke mode in which the hitting speed is improved And is configured to change the short stroke mode.

On the other hand, when the operating oil is contaminated due to the inflow of foreign substances or the like, the piston reciprocating on the cylinder may be scratched on the outer surface, which may cause the oil film to break and cause unintended friction between the piston and the cylinder. Such rubbing can increase the debris generated from the piston and the surface of the cylinder by the friction, and vicious cycle in which the contamination of the operating oil again is worsened can be repeated. As a result, contamination of the operating oil can seriously affect the performance and durability of the piston, such as an increase in the vibration of the piston and a decrease in the hitting force.

The present invention solves the above-mentioned problems, and it is an object of the present invention to provide a hydraulic breaker which detects contamination of hydraulic oil of a hydraulic breaker, analyzes contamination degree information, informs the user of the information according to a predetermined condition, System and an operating oil monitoring method.

It is to be understood that the present invention is not limited to the above-described embodiments and that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the following claims .

According to one aspect of the present invention, there is provided a hydraulic breaker comprising: a cylinder having a plurality of hydraulic ports; a piston reciprocating in the cylinder by hydraulic pressure of hydraulic oil introduced into or discharged from the hydraulic port; A pollution degree sensor for detecting pollution degree information including inflow pollution degree related to the inflowing operating oil and discharge pollution degree related to the discharged operating oil, and a controller for determining whether the operating oil is polluted based on the detected pollution degree information, And a transmission module for outputting the pollution degree information to a controller that performs a warning operation when it is determined that the pollution degree is contaminated.

According to an aspect of the present invention, there is provided a monitoring system for monitoring the pollution degree of hydraulic oil of a hydraulic breaker having a cylinder provided with a plurality of hydraulic ports and a piston reciprocating in the cylinder by hydraulic pressure of hydraulic oil flowing in or out through the hydraulic port A pollution degree sensor installed on an oil pressure line connected to the hydraulic port and sensing pollution degree information including the pollution degree of the inflowing hydraulic oil and the discharge pollution degree of the discharged hydraulic oil, And a controller that determines that the operating oil is contaminated and performs a warning operation when the predetermined condition is satisfied based on the pollution degree information.

According to one aspect of the present invention, there is provided a method of monitoring an operating oil, comprising the steps of: striking an object with a chisel in accordance with a reciprocating motion of the piston in the cylinder; Detecting a contamination degree information of the operating oil flowing into or flowing into the controller, and performing a warning operation when the predetermined condition is satisfied based on the contamination degree information detected by the controller.

It is to be understood that the solution of the problem of the present invention is not limited to the above-mentioned solutions, and the solutions which are not mentioned can be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

According to the hydraulic breaker, the hydraulic oil monitoring system, and the hydraulic oil monitoring method according to the embodiment of the present invention, it is possible to detect the contamination degree information of the hydraulic oil, to warn the user according to predetermined conditions when judging based on the detected degree of contamination information, So that it is effective in maintaining the performance and durability of the hydraulic breaker. The warning to be informed to the user may include the degree of contamination of the operating oil, the necessity of replacing the operating oil accordingly, and whether the parts such as the piston are damaged.

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

1 is a schematic view of a 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 views showing pollution degree information detected by a pollution level sensor according to an embodiment of the present invention.
7 is a schematic block diagram of an operating oil monitoring system according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes or modifications may fall within the scope of the appended claims.

According to one aspect of the present invention, there is provided a hydraulic breaker comprising: a cylinder having a plurality of hydraulic ports; a piston reciprocating in the cylinder by hydraulic pressure of hydraulic oil introduced into or discharged from the hydraulic port; A pollution degree sensor for detecting pollution degree information including inflow pollution degree related to the inflowing operating oil and discharge pollution degree related to the discharged operating oil, and a controller for determining whether the operating oil is polluted based on the detected pollution degree information, And a transmission module for outputting the pollution degree information to a controller that performs a warning operation when it is determined that the pollution degree is contaminated.

The hydraulic port includes a hydraulic port for connecting the hydraulic source to the rear chamber of the cylinder for forward and backward movement of the piston, and the forward port is connected to the rear chamber And the operating oil is discharged from the rear chamber in the direction of the hydraulic pressure source when the piston is moved backward. The contamination degree sensor is disposed on a hydraulic line connected to the forward port, May detect the inflowing pollution degree of the operating oil flowing in the direction of the rear chamber from the hydraulic pressure source and detect the discharged pollution degree of the operating oil discharged from the rear chamber in the direction of the hydraulic pressure source during the backward movement of the piston.

The hydraulic port includes a backward port for connecting a hydraulic source and a front chamber of the cylinder for backward movement of the piston and a discharge port for discharging hydraulic fluid from the front chamber for forward movement of the piston, The sensor includes an inlet pollution sensor installed on a hydraulic line connecting the backward port and the hydraulic pressure source and sensing an inflow contamination degree of hydraulic oil flowing into the front chamber, And a discharge pollution sensor for sensing the discharge pollution degree of the operating oil discharged from the front chamber.

The discharge port may include a hydraulic tank port for discharging the hydraulic oil from the front chamber toward the hydraulic tank, and a discharge pollution sensor may be installed on the hydraulic line connected to the hydraulic tank port.

According to another aspect of the present invention, there is provided a hydraulic breaker comprising a cylinder having a plurality of hydraulic ports and a piston reciprocating in the cylinder by the hydraulic pressure of hydraulic oil flowing in or out of the hydraulic port, A pollution degree sensor installed on an oil pressure line connected to the hydraulic port and sensing pollution degree information including the pollution degree of the inflowing hydraulic oil and the discharge pollution degree of the discharged hydraulic oil, And a controller that determines that the operating oil is contaminated and performs a warning operation when a predetermined condition is satisfied based on the pollution degree information.

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

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

The predetermined condition may be a condition in which the difference between the inflowing pollution degree of the contamination degree information and the discharge 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 the pollution degree related to the operating fluid to be introduced and the operating fluid to be discharged when the piston reciprocates once.

The image processing apparatus may further comprise an output module for outputting a video or audio,

And may output a warning message through the output module when the operating oil is judged to be contaminated.

In addition, the controller may stop the reciprocating movement of the piston when the operating oil is judged to be contaminated.

The hydraulic breaker may include a control valve for connecting the hydraulic source to the rear chamber of the cylinder for forward movement of the piston or for discharging the hydraulic oil from the rear chamber of the cylinder for backward movement, Wherein the controller can control the shut-off valve to shut off the flow of the hydraulic fluid when it is determined that the hydraulic fluid is contaminated.

The shut-off valve selectively blocks the flow of the hydraulic fluid to the control valve. The controller controls the shut-off valve to shut off the flow of the hydraulic fluid when the hydraulic fluid is judged to be contaminated. Can be controlled.

The controller may further output a warning message through the output module when the contamination value of the pollution degree information is equal to or greater than the first reference contamination value, Is greater than or equal to a second reference contamination value greater than the first reference contamination value, the reciprocating motion of the piston may be stopped.

According to another aspect of the present invention, there is provided a method for controlling an object, comprising the steps of: striking an object with a chisel in accordance with a reciprocating movement of the piston in the cylinder; a contamination sensor provided on a hydraulic line connected to the hydraulic port provided on the cylinder; Detecting the pollution degree information on the discharged operating oil, and performing a warning operation when the predetermined condition is satisfied based on the pollution degree information detected by the controller.

1 is a schematic view of a 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 views showing pollution degree information detected by a pollution level sensor according to an embodiment of the present invention.

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

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

First, to define the direction, the height direction may refer to the up and down directions with reference to Figs. 2, 3 and 4.

As shown in FIG. 1, for example, the construction equipment 100 is a device for performing a batting operation on an object. The construction equipment 100 for the hitting operation is mainly implemented by attaching the hydraulic breaker 1000 to an heavy equipment vehicle such as an excavator as an attachment.

The hydraulic breaker 1000 is a device that performs an operation to strike an object.

Of course, in the present invention, the hydraulic breaker 1000 is not limited to the above-described example, and other types of striking devices that perform a function of striking an object other than the hydraulic breaker should also be understood.

The hydraulic breaker 1000 may be a heavy duty vehicle, that is, an attachment type mounted on the carrier 120, but is not necessarily so, and may exist in a form independent from the carrier 120, such as a form handled by an operator.

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

The carrier 120 can be largely divided into a traveling body 121 and a rotating body 122.

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

The rotating body 122 is mounted on the traveling body 121 so as to be rotatable with respect to the axis perpendicular to the paper.

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

The connecting member 123 is mainly composed of two or more members fastened in a linking manner, and can be connected to the cylinder to perform an operation of bending or expanding, a stretching and the like by the expansion and contraction of the cylinder. The connecting member 123 can place the hydraulic breaker 1000 attached to its end by this action on the pita boot.

The hydraulic breaker 1000 is mounted on the carrier 120 so that the hydraulic breaker 1000 can be operated or hydraulic pressure may be applied to each part of the carrier 120 including the boom or the arm or the coupler 140, And a hydraulic tank 160a for storing hydraulic oil may be installed.

A cabin 124 is provided on the rotating body 122 so that the user can control the carrier 120 or the hydraulic breaker 1000 by using a handle, a lever, or a button in the cabin 124 .

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

2 and 3, the hydraulic breaker 1000 may include a mounting bracket 1200, a main body 1400, and a chisel 1600, for example. The main body 1400 is a portion for generating a striking force in the hydraulic breaker 1000 and has a cylinder 1430 and a piston 1440 accommodated in the cylinder 1430, As the piston 1440 reciprocates by the hydraulic pressure, a hitting force is generated. The chisel 1600 directly hits the pit bulge and the lower portion of the main body 1400 (the piston 1440 advances (advances) in the following description to the upper side of the main body 1400 so as to hit the lower end of the piston 1440 And defines the upward direction in which the piston 1440 is moved upward (downward).

The mounting bracket 1200 is coupled to the upper end of the main body 1400 and serves as a connection between the carrier 120 and the main body 1400.

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

For example, the piston 1440 is provided in a cylindrical shape, and the cylinder 1430 may be provided in a hollow cylindrical shape so that the piston 1440 can be inserted and reciprocated.

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 inside of the cylinder 1430 or discharging hydraulic pressure from the inside of the cylinder 1430.

The piston 1440 includes at least a small diameter portion 1446, a first large diameter portion 1444 located on the upper side of the small diameter portion 1446 and a second large diameter portion 1442 located on the lower side of the small diameter portion 1446 .

The hydraulic pressure applied to the inside of the cylinder 1430 through the hydraulic port acts on the stepped surfaces 1444a and 1442a formed by the first large diameter portion 1444 and the second large diameter portion 1442, (1430). ≪ / RTI >

Accordingly, by appropriately designing the stepped surfaces 1444a and 1442a of the hydraulic port and the piston 1440 formed in the cylinder 1430, it is possible to control not only the reciprocation of the simple piston 1440 but also the stroke distance of the piston 1440 have.

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

The front head 1450 is provided with a chisel pin (not shown) to which the chisel 1600 is attached and the chisel 1600 is hammered by the lower end of the piston 1440 by advancing the piston 1440 by a chisel pin (not shown) In a suitable position.

A dust protector (not shown) or a sound absorbing member (not shown) for reducing foreign matter from entering into the cylinder 1430 when the piston 1440 reciprocates is added to the front head 1450 As shown in FIG.

The head cap 1420 has a gas chamber (not shown) therein and the gas chamber can impart an appropriate damping effect to the piston 1440 as its volume is compressed upon retraction of the piston 1440.

The structure and structure of the hydraulic breaker 1000 described above are only examples of the hydraulic breaker 1000 according to the present invention, and the hydraulic breaker 1000 according to the present invention is similar to the hydraulic structure of the hydraulic breaker 1000 It should be understood that other striking devices having the function are also included.

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

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

The piston 1440 may be formed with a small diameter portion 1446, a first large diameter portion 1444 located on the upper side of the small diameter portion 1446 and a second large diameter portion 1442 located on the lower side of the small diameter portion 1446 have.

The first large diameter portion 1444 and the second large diameter portion 1442 may have substantially the same outer diameter as the inner diameter of the cylinder 1430. Accordingly, the lower portion of the cylinder 1430, A front chamber 1431 may be formed between the neck portion 1442 and a rear chamber 1432 may be formed between the upper side of the cylinder 1430 and the first large diameter portion 1444.

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

Accordingly, the hydraulic pressure can be applied to the front chamber 1431 by the operating oil flowing into the backward port 1433 from the hydraulic pressure source 160 through the backward line 1433a.

The hydraulic pressure applied to the front chamber 1431 acts on the step surface 1442a of the second large-diameter portion 1442, and the piston 1440 can be subjected to a backward force.

The rear chamber 1432 is formed with a forward port 1434 and the forward port 1434 can be connected to the control valve 1460 through the forward line 1434a.

The control valve 1460 may be disposed at any one of the forward position 1460-2 or the backward position 1460-1 and the forward position 1460a may be disposed at the hydraulic source 160 And the forward line 1434a can be connected to the hydraulic tank 160a in the backward position 1460-1.

Accordingly, when the control valve 1460 is disposed in the forward position 1460-2, the rear chamber 1432 is supplied with the hydraulic fluid from the hydraulic source 160 through the control valve 1460 and the forward line 1434a to the forward port 1434 The hydraulic pressure can be applied by the operating oil.

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. [

When the control valve 1460 is disposed in the backward position 1460-1, the rear chamber 1432 is connected to the hydraulic tank 160a via the forward line 1434a and the control valve 1460, 1460-2, the hydraulic fluid flowing into the rear chamber 1432 is discharged to the hydraulic tank 160a.

In this structure, since 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, the control valve 1460 is moved to the forward position 1460-2 The forward force is greater than the backward force and the piston 1440 can advance.

Conversely, when the control valve 1460 is disposed in the reverse position 1460-1, the hydraulic pressure applied from the hydraulic pressure source 160 acts on only the stepped surface 1442a of the second large-diameter portion 1442, can do.

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

In one example, the control of the position 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 backward position 1460-1 can be selected in accordance with the input hydraulic pressure signal.

At both ends of the control valve 1460, a forward action surface 1464 and a backward action surface 1462, which are connected to the hydraulic line, respectively, may be provided.

Here, the forward action surface 1464 may be connected to the long stroke line 1435a and the forward control line 1464a which is branched to the short stroke line 1436a.

The reverse working surface 1462 can be connected to the hydraulic source 160 via the reverse control line 1462a.

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

Conversely, when hydraulic pressure applied from the hydraulic pressure source 160 is applied only to the reverse operation surface 1462, the control valve 1460 can be disposed from the advance position 1460-2 to the reverse position 1460-1, (1440) can be reversed.

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 backward port 1433 of the cylinder 1430 so that the long stroke port 1435 can be connected to or disconnected from the front chamber 1431 according to the position of the piston 1440.

More specifically, the long stroke port 1435 is connected to the front chamber 1431 when the piston 1440 advances and the second large diameter portion 1442 is on the long stroke port 1435 or below the long stroke port 1435, Is disconnected.

The long stroke port 1435 is connected to the front chamber 1431 when the piston 1440 is reversed and the second large diameter portion 1442 is located above the long stroke port 1435.

Accordingly, when the long stroke port 1435 is connected to the front chamber 1431, the hydraulic pressure from the hydraulic pressure source 160 is supplied to the reverse line 1433a, the reverse port 1433, the front chamber 1431, the long stroke port 1435, The long stroke line 1435a and the forward control line 1464a to the forward action surface 1464 so that the control valve 1460 can be disposed at the forward position 1460-2.

The short stroke line 1436a may be connected to the short stroke port 1436 formed in the cylinder 1430. [ The short stroke port 1436 is formed between the forward port 1434 and the backward port 1433 of the cylinder 1430 so that the short stroke port 1436 can be connected to or disconnected from the front chamber 1431 according to the position of the piston 1440, May be formed at a position closer to the backward port (1433) than the port (1435).

More specifically, the short stroke port 1436 is connected to the front chamber 1431 when the piston 1440 advances and the second large diameter portion 1442 is on the short stroke port 1436 or is located forward of the short stroke port 1436. [ The connection is blocked.

The short stroke port 1436 is connected to the front chamber 1431 when the piston 1440 is retracted and the second large diameter portion 1442 is located rearward of the short stroke port 1436.

Here, on the short stroke line 1436a, a shift valve 1470 for controlling the short-circuit of the short stroke line 1436a may be provided.

The shift valve 1470 may be selectively disposed at one of the long stroke position 1470-1 and the short stroke position 1470-2 and the short stroke line 1436a And connects the short stroke line 1436a at the short stroke position 1470-2.

Thus, the long stroke mode and the short stroke mode of the piston 1440 can be determined by the transmission valve 1470. [

The shift valve 1470 is disposed at the short stroke position 1470-2 and the second large diameter portion 1442 is positioned further rearward than the short stroke port 1436 so that the short stroke port 1436 and the front chamber 1431 The hydraulic fluid is supplied to the hydraulic source 160, the reverse line 1433a, the reverse port 1433, the front chamber 1431, the short stroke port 1436, the shift valve 1470 and the forward action surface 1464, Can be reached sequentially.

With this structure, the piston 1440 can selectively perform the reciprocating motion in the long stroke mode and the short stroke mode according to the position of the speed change 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, Stroke position 1470-1 and the short stroke position 1470-2.

When the piston 1440 moves backward, the hydraulic fluid is supplied from the hydraulic source 160 along the reverse line 1433a to the back chamber 1433 via the reverse port 1433, (1431). When the short stroke port 1436 is opened as the piston 1440 is retracted, the operating oil is discharged from the front chamber 1431 along the short stroke line 1436a. When the piston 1440 is further retracted, the long stroke port 1435 is opened, and 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 forward line 1434a via the forward port 1434. [

During the forward motion of the piston 1440, the hydraulic fluid 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 working oil is discharged along the hydraulic tank line 1438a via the hydraulic tank port 1438. [

The contamination level sensor 150 may be provided on a hydraulic line connected to the cylinder to sense contamination of the hydraulic oil flowing into the cylinder or discharged from the inside of the cylinder to cause reciprocating movement of the piston.

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

In one example, the pollution level sensor 150 may include an incoming pollution level sensor 150a, 150b and an exhaust pollution level sensor 150a, 150c, 150d, 150e.

 The inflow pollution sensors 150a, 150c, 150d, 150e may be provided on the line in and the reverse line 1433a through which the hydraulic oil flows into 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 of the hydraulic oil line 1430, . Here, when it is determined that the operating oil is contaminated, the position of the contamination level sensor is specified so that the chamber causing the contamination can be identified.

The hydraulic breaker 1000 may further include a shutoff valve 1480 for selectively shutting off the flow of the hydraulic fluid.

The shutoff valve 1480 may be installed in a line where the hydraulic oil is to be 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 hydraulic fluid in the connecting position 1480-2 and may block the flow of hydraulic fluid in the cutoff position 1480-1.

In one example, shutoff valve 1480 is located on advancement control line 1464a and extends from actuating oil or short stroke port 1436, which is moved from long stroke port 1435 to advancement action surface 1464, The flow of the hydraulic fluid to be transferred to the first hydraulic pump may be allowed or blocked.

If the shutoff valve 1480 is disposed in the shutoff position 1480-1 to shut off the flow of hydraulic fluid, hydraulic pressure is not applied to the forward action surface 1464 and the control valve 1460 is in the reverse position 1460- 1) to the forward position 1460-2.

Therefore, the hydraulic fluid is not supplied from the hydraulic pressure source 160 to the rear chamber 1432 by the control valve 1460 in the reverse position 1460-1, so that the reciprocation of the piston 1440 can be stopped.

The installation position of the shutoff valve 1480 is not limited to the above-mentioned position, but may be provided on the backward line 1433a or on the forward line 1434a, for example.

Hereinafter, an operating oil monitoring technique using the contamination degree information of the operating oil sensed by the contamination level sensor 150 will be described.

It may happen that the fragments are infiltrated into the hydraulic fluid that passes through the front chamber 1431 and the rear chamber 1432 and generates the reciprocating motion of the piston 1440 during the stroke of the hydraulic breaker 1000. Or scratches generated on the piston 1440 may cause friction between the inside of the cylinder 1430 and the surface of the piston 1440, which may generate debris and contaminate the operating oil. In addition, the degree of contamination of the hydraulic oil may increase due to various reasons such as the failure of the hydraulic oil itself, which is directly related to the performance and durability of the hydraulic breaker 1000 as described above.

For example, a pollution degree sensor 150 capable of detecting the pollution degree of the operating oil may be provided. The contamination level sensor 150 may be provided on the backward line 1433a to sense inflow contamination information of the hydraulic oil flowing into the front chamber 1431 and may be provided with information on the degree of contamination of the hydraulic oil flowing into or out of the rear chamber 1432 May be provided on advance line 1434a for sensing. Further, it may be provided on the short stroke line 1436a, the long stroke line 1435a, and the hydraulic tank line 1438a to sense the discharge pollution information of the operating oil discharged out of the front chamber 1431. [

For example, the pollution level sensor 150 may be a turbidity sensor using an optical sensor including a light emitting unit that outputs an optical signal and a light receiving unit that receives the optical signal and outputs a corresponding current, The sensor may be an electric conductivity sensor for sensing electric conductivity. However, the present invention is not limited to this. If the sensor is a sensor capable of detecting whether the operating oil is contaminated or whether the floating oil, debris, ).

For example, in the case of an optical sensor using light scattering, the scattering pattern may vary depending on the light source and particle size. The particle size can be derived by analyzing the scattering pattern of the light sensed by the operating oil, so that information on the particle size can be provided to the user, if necessary.

For example, in the case of an electrical conductivity sensor, the change in electrical conductivity may show various patterns depending on the kind of the particles, so that it can be analyzed to provide information on the kind of particles to the user as needed.

For example, by analyzing the type and size of the particles causing the contamination of the working oil, various information such as the cause of the contamination and the generation region, the fragment of the piston, and the fragment of the pit explosion can be derived.

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

For example, the transmitting module may be configured to output the pollution degree information to the controller 180. [

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

For example, the transmitting module may output the contamination degree information from the pollution degree sensor 150 to the controller 180 by wire communication, or output the pollution degree information from the pollution degree sensor 150 to the controller 180 by wireless communication.

A typical example of the wireless communication of the transmitting module is Bluetooth (BTLE, BlueTooth Low Energy) or Zigbee. Since communication between the contamination level sensor 150 and the controller 180 does not require a high bandwidth, low power communication such as BTLE or duty ratio may be desirable.

However, the communication method between the controller 180 and the pollution level sensor 150 is not limited to this.

The controller 180 can determine whether the operating 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 judges that the operating oil is contaminated. The warning notified to the user may include the contamination degree of the operating oil determined based on the contamination degree information sensed by the pollution degree sensor, the necessity of the replacement of the operating oil and the damage of the piston or other parts.

For example, the controller 180 is an electronic circuit that processes and computes various electronic signals. The controller 180 receives pollution degree information or signals from the pollution degree sensor 150, computes information / data, The breaker 1000, and other components of the construction equipment 100. [

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

Also, the controller 180 does not necessarily have to be implemented as a single object.

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

For example, the controller 180 may be partly disposed on the side of the hydraulic breaker 1000 and the other part of the controller 180 may be disposed on the carrier 120, / Wired communication and collaborate to perform its function.

For example, when a plurality of controllers 180 are distributed and arranged, some of them may simply transmit signals or information in a slave type, while others may receive various signals or information in a master type and perform processing / Control may be performed.

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

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 operating hydraulic oil that causes the reciprocating motion of the piston 1440 in the hydraulic breaker 1000 described above.

For example, the monitoring system may monitor the contamination of the operating oil by using the contamination degree information detected by the pollution degree sensor 150 described above. If the monitoring result indicates that the hydraulic fluid has been contaminated, a warning operation may be performed.

Here, the hydraulic oil monitoring system may include a contamination level sensor 150 and a controller 180. When the controller 180 satisfies a predetermined condition based on the level of contamination information detected from the level of the pollution level sensor 150, It can be judged as contaminated and a warning operation can be performed.

The predetermined condition may be a reference condition for judging whether or not the operating oil is contaminated.

For example, the controller 180 can determine that the operating oil is contaminated when the calculated / converted data based on the pollution degree information or the pollution degree information detected from the pollution level sensor 150 satisfy a predetermined condition, It can be determined that the operating oil is in a normal state.

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

In addition, the hydraulic oil monitoring system may further include an output module 190 for outputting images or sounds.

An output module 190 may be further included. The output module 190 may be implemented by, for example, a video output module for outputting a video image or a voice output module for outputting audio.

Of course, various output devices that convey information to the user besides the two can be employed as the output module 190.

The output module 190 may directly output video or audio to the user, or may include a USB port for transmitting video / audio signals to another device that directly outputs video or audio to the user.

The output module 190 may be configured to output a video or voice and output a warning message to the user about the operating oil contamination.

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

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

The controller 180 and the output module 190 may be capable of wired communication or wireless communication.

Here, for example, as shown in Fig. 5, a predetermined condition may be a condition in which the contamination value of the contamination degree information is equal to or higher than predetermined reference contamination values K1 and K2.

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

The first contamination level sensor 150a can detect the inflow contamination level of the hydraulic oil flowing into the rear chamber 1432 during the forward movement of the piston 1440 and can be discharged from the rear chamber 1432 during the backward movement of the piston 1440 It is possible to detect the discharge pollution degree of the operating oil.

That is, the first pollution level sensor 150a may be an inflow pollution level sensor or an exhaust pollution level sensor at the same time.

For example, FIG. 5 shows pollution degree information detected by the first pollution degree sensor 150a. Here, the larger the contamination value, the greater the contamination of the operating oil. The contamination degree information of the operating oil flowing into the rear chamber 1432 while the piston 1440 is advanced is sensed in the interval of time 0 to t1, t2 to t3 and t4 to t5, 1432 is detected in the interval of time t1 to t2, t3 to t4, t5 to t6.

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

For example, the predetermined condition may be a condition that the frequency at which the contamination value of the operating oil is equal to or higher than the predetermined reference contamination value K1, K2 is equal to or greater than a predetermined reference frequency value.

Here, for example, when the contamination level sensor is an optical sensor or an electric conductivity sensor, turbidity or electrical conductivity may temporarily vary greatly depending on the direction of the debris, non-uniformity of impurities, and the like. Accordingly, even if the degree of contamination of the operating oil is not severe, it may occur that the detected amount of the operating oil is temporarily higher than predetermined reference contamination values K1 and K2. In order to prevent this, the number of times that the contamination value of the operating oil is equal to or greater than the predetermined reference contamination value is compared with the number of reciprocations of the total piston to detect the degree of contamination of the operating oil flowing or discharged while the piston 1440 reciprocates a plurality of times, And obtains the frequency at which the contamination value is equal to or greater than a predetermined reference contamination value. It can be determined that the operating oil is contaminated only when the obtained frequency is equal to or greater than a predetermined reference frequency value, thereby eliminating the error and securing a high level of reliability. For example, as shown in FIG. 5, when the contamination value is 6 or more in the six sections from 0 to t6, 3 is detected, and when the contamination value is K2 or more, 2 is detected and the predetermined reference frequency value is set to 40% The controller 180 can send a warning message because it is equal to or greater than the predetermined reference frequency value for K1 and the controller 180 does not take any action because K2 is less than the predetermined reference frequency value.

In addition, for example, it may be a condition that the degree of contamination of the operating oil flowing in or out within a predetermined time is detected, and the frequency at which the contamination value of the operating oil is equal to or higher than a predetermined reference contamination value is equal to or higher than a predetermined reference frequency value.

That is, for example, if the contamination value is more than K1 in the time from 0 to t6 three times or more, the controller 180 may judge that the operating oil is contaminated.

For example, when the difference between the contamination value of the incoming hydraulic fluid and the contamination value of the discharged hydraulic oil is equal to or greater than the predetermined reference difference value? K, the controller 180 determines that the pollution degree information is notified to the user And performs a predetermined operation.

For example, the contamination value of the incoming hydraulic oil and the contaminated value of the discharged hydraulic oil may be a contamination value of the hydraulic oil flowing into the piston 1440 and the hydraulic oil discharged at the time of one forward movement and one forward movement of the piston 1440, respectively. In this case, the accuracy of the hydraulic oil monitoring system can be improved by identifying the degree of contamination which is increased by one reciprocating motion, that is, by specifying the degree of impurities generated by a single reciprocating motion.

4, the hydraulic breaker 1000 may be provided with a second pollution level sensor 150b on the backward line 1433a, and a third pollution level sensor 150b may be provided on the hydraulic tank line 1438a. The first pollution degree sensor 150c may be provided on the long stroke line 1435a and the fourth pollution degree sensor 150d may be provided on the long stroke line 1435a and the fifth pollution degree sensor 150e may be provided on the short stroke line 1436a,

The second pollution level sensor 150b can sense the pollution level of the hydraulic oil flowing into the front chamber 1431 during the backward movement of the piston 1440 and the third pollution level sensor 150c can sense the pollution level of the hydraulic oil flowing into the front chamber 1431 during the forward movement of the piston 1440. [ The contamination degree of the operating oil discharged from the chamber 1431 can be detected.

The fourth contamination level sensor 150d can sense the degree of contamination of the operating oil discharged from the front chamber 1431 as the long stroke port 1435 is opened when the piston 1440 reciprocates according to the long stroke mode, The fifth contamination level sensor 150e can sense the degree of contamination of the operating oil discharged from the front chamber 1431 as the short stroke port 1436 opens when the piston 1440 reciprocates according to the short stroke mode,

6, the contaminant information of the hydraulic oil flowing into the front chamber 1431 detected by the second contamination level sensor 150b provided on the reverse line 1433a as an example of the inlet pollution level sensor is shown by a solid line, There may be a short stroke port 1436, a long stroke port 1435, a hydraulic tank port 1438, or the like, which refers to a port through which hydraulic fluid discharged from the discharge port-front chamber flows. The third pollution level sensor 150c, the fourth pollution level sensor 150d, and the fifth pollution level sensor 150e provided on the hydraulic line discharged from the front chamber 1431 through the dashed line - Respectively. The pollution degree can be gradually increased as shown in Fig. 6 when it is used without changing the operating oil for a long time.

For example, when K1 and K2 are predetermined reference contamination values and the detected contamination value is K1 or K2 or more, the controller 180 performs a predetermined operation to inform the user of the contamination information.

For example, when the difference between the contamination value of the incoming hydraulic fluid and the contamination value of the discharged hydraulic oil is equal to or greater than the predetermined reference difference value? K, the controller 180 determines that the pollution degree information is notified to the user And performs a predetermined operation.

For example, when the controller 180 determines that the operating oil is contaminated based on the contamination degree information sensed by the first pollution degree sensor 150a, impurities in the cylinder 1430 or scratches or the like generated on the piston 1440 The place where the inducing factor of the operating oil contamination is located can be specified as the rear chamber 1432. The controller 180 can inform the user of the position of the specified pollution inducer along with a warning message.

The degree of contamination of the operating oil flowing into the front chamber 1431 from the second pollution level sensor 150b is compared with the degree of contamination of the operating oil discharged from the front chamber 1431 by the third degree of pollution level sensor 150c, When it is judged that the operating oil is contaminated, it can be specified that the place where the inducing factor of the operating oil pollution such as the impurities in the cylinder 1430 or the scratch generated on the piston 1440 is located is the front chamber 1431. The controller 180 can inform the user of the position of the specified pollution inducer along with a warning message. The fourth pollution level sensor 150d and the fifth pollution level sensor 150e also detect the pollution level of the operating oil discharged from the front chamber 1431. In the function of specifying the chamber in which the driving oil pollution inducing factor is located, And can perform the same function as the sensor 150c.

Here, the controller 180 may output a warning message to the user through the output module 190 when it judges that the operating oil is contaminated.

In addition, for example, the controller 180 may stop the reciprocating motion of the piston 1440 when the controller 180 determines that the operating oil is contaminated.

5 and 6, the controller 180 outputs a warning message to the user through the output module 190 when the contamination value of the contamination degree information is equal to or greater than the first contamination value K1 And the reciprocating motion of the piston 1440 can be stopped when the contamination value of the contamination degree information is equal to or higher than the second contamination value K2 which is larger than the first contamination value K1.

That is, the controller 180 can notify the user of the fact through the output module 190 when the degree of contamination of the operating oil is at the warning level. If the degree of contamination of the operating oil is equal to or higher than the warning level, Can be stopped.

As a result, the controller 180 can prevent the piston 1440 and the cylinder 1430 from being damaged due to an increase in contamination of the operating oil of the piston 1440.

For example, the controller 180 may control the shutoff valve 1480 such that the shutoff valve 1480 blocks the flow of the hydraulic oil when it judges that the hydraulic oil is contaminated.

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

In other words, the controller 180 can control the shutoff valve 1480 to change from the connection position 1480-2 to the shutoff position 1480-1, so that the shutoff valve 1480 can control the flow of hydraulic fluid Can be blocked.

As described above, when the shutoff valve 1480 is switched from the connection position 1480-2 to the shutoff position 1480-1 under the control of the controller 180, the control valve 1460 is in the reverse position 1460- 1). As a result, the hydraulic fluid of the hydraulic pressure source 160 can not flow into the rear chamber 1432, and the reciprocating motion of the piston 1440 may not be realized.

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

For example, the controller 180 can control the shift valve 1470 to change the piston 1440 to the short stroke state when the piston 1440 determines that the operating oil is contaminated in the long stroke state, When the piston 1440 determines that the operating oil is contaminated in the short stroke state, the shutoff valve 1480 may be controlled to stop the piston 1440.

The controller 180 may sequentially control the speed change valve 1470 and the shutoff valve 1480 so that the piston 1440 changes to the short stroke sequentially when the piston 1440 is in the long stroke and stops again at the short stroke.

The user can recognize that the operating oil is contaminated by changing the reciprocating state of the piston 1440 under the control of the controller 180.

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

Hereinafter, the method of monitoring the operating oil will be described.

The hydraulic oil monitoring method includes a step (S10) of striking an object with a chisel in accordance with a reciprocating movement of the piston 1440 in the cylinder 1430, a step (S103) of detecting a contamination level sensor provided on a hydraulic line connected to a hydraulic port provided on the cylinder 1430 Detecting the pollution degree information about the operating oil flowing into or exhausted from the cylinder 1430 by the controller 150 and performing a warning operation when the predetermined condition is satisfied based on the pollution degree information detected by the controller 180 S30).

7, the controller 180 and the pollution level sensor 150, the shutoff valve 1480, the shift valve 1470, and the output module (not shown) are connected to the controller 180, The shutoff valve 1480, the speed change valve 1470, and the output module 190 can be controlled by the controller 180. [

In addition, the predetermined reference contamination values K1 and K2, the predetermined reference difference value? K, and the predetermined reference frequency value may be input by the input unit 195. If the controller 180 determines that the operating oil is not contaminated Based on the pollution degree information obtained from the pollution level sensor 150 in the first embodiment.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes or modifications may fall within the scope of the appended claims.

120: Carrier
1000: Hydraulic breaker
150: Pollution level sensor
180: controller
190: Transmission module

Claims (15)

A cylinder having a plurality of hydraulic ports;
A piston reciprocating in the cylinder by hydraulic pressure of hydraulic oil flowing into or out of the hydraulic port;
A pollution level sensor installed on a hydraulic line connected to the hydraulic port and sensing pollution degree information including inflow pollution degree concerning the inflowing operating oil and discharge pollution degree relating to the discharged operating oil; And
And a transmission module for determining whether the operating oil is contaminated based on the sensed information on the degree of contamination and outputting the degree of contamination information to a controller for performing a warning operation when it is determined that the operating oil is contaminated,
Hydraulic breaker.
The method according to claim 1,
The hydraulic port
And a forward port connecting a hydraulic source and a rear chamber of the cylinder for forward and backward movement of the piston,
Wherein the forward port comprises:
The hydraulic fluid is supplied from the hydraulic pressure source toward the rear chamber during forward movement of the piston,
The hydraulic oil is discharged from the rear chamber in the direction of the hydraulic pressure source when the piston moves backward,
The contamination level sensor comprises:
A hydraulic line connected to said forward port,
Wherein the control unit senses the inflowing pollution degree of the operating oil flowing from the hydraulic source toward the rear chamber during the forward movement of the piston and controls the discharge pollution degree of the operating oil discharged from the rear chamber in the direction of the hydraulic pressure source during the backward movement of the piston, Lt; / RTI >
Hydraulic breaker.
The method according to claim 1,
The hydraulic port
A backward port for connecting a hydraulic source to a front chamber of the cylinder for backward movement of the piston, and a discharge port for discharging hydraulic fluid from the front chamber for forward movement of the piston,
The contamination level sensor comprises:
An inlet pollution sensor installed on a hydraulic line connecting the backward port and the hydraulic pressure source to detect the inflowing pollution degree of hydraulic oil flowing into the front chamber and a hydraulic pump installed on a hydraulic line connected to the discharge port, And a discharge pollution degree sensor for detecting the discharge pollution degree of the discharged operating oil.
Hydraulic breaker.
The method of claim 3,
The discharge port
And a hydraulic tank port for discharging hydraulic oil from the front chamber toward the hydraulic tank,
The exhaust pollution degree sensor comprises:
And a hydraulic line connected to the hydraulic tank port,
Hydraulic breaker.
A hydraulic oil monitoring system for monitoring a pollution degree of a 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 hydraulic oil flowing in or out through the hydraulic port,
A pollution level sensor installed on a hydraulic line connected to the hydraulic port and sensing pollution degree information including inflow pollution degree concerning the inflowing operating oil and discharge pollution degree relating to the discharged operating oil; And
And a controller that determines that the operating oil is contaminated and performs a warning operation when a predetermined condition is satisfied based on the detected contamination degree information,
Hydraulic oil monitoring system.
6. The method of claim 5,
The predetermined condition is that,
Wherein the pollution degree information is a condition that the contamination value of the pollution degree information is equal to or higher than a predetermined reference pollution value,
Hydraulic oil monitoring system.
The method according to claim 6,
The predetermined condition is that,
Wherein a contamination value of the contamination degree information is equal to or higher than a predetermined reference frequency,
Hydraulic oil monitoring system.
6. The method of claim 5,
The predetermined condition is that,
Wherein the pollution degree information is a condition that a difference value between the inflow pollution degree of the pollution degree information and the pollution degree of the pollution degree information is equal to or greater than a predetermined reference difference value,
Hydraulic oil monitoring system.
9. The method of claim 8,
Wherein the inflow pollution degree and the discharge pollution degree are calculated by:
When the piston reciprocates once, the contamination degree of the operating fluid and the discharged operating oil,
Hydraulic oil monitoring system.
6. The method of claim 5,
And an output module for outputting a video or audio,
The controller includes:
And outputting a warning message through the output module when it is determined that the operating oil is contaminated,
Hydraulic oil monitoring system.
6. The method of claim 5,
The controller includes:
And stopping the reciprocating movement of the piston when the operating oil is judged to be contaminated,
Hydraulic oil monitoring system.
12. The method of claim 11,
The hydraulic breaker may include a control valve for connecting the hydraulic source to the rear chamber of the cylinder for forward movement of the piston or for discharging the hydraulic oil from the rear chamber of the cylinder for backward movement, And a shut-off valve for shutting off the shut-
The controller includes:
And the shut-off valve controls the shut-off valve to shut off the flow of the hydraulic fluid when it is determined that the hydraulic fluid has been contaminated.
Hydraulic oil monitoring system.
13. The method of claim 12,
The shut-off valve selectively blocks the flow of the hydraulic fluid to the control valve,
The controller includes:
And the shut-off valve controls the shut-off valve to shut off the flow of the hydraulic fluid when it is determined that the hydraulic fluid has been contaminated.
Hydraulic oil monitoring system.
6. The method of claim 5,
And an output module for outputting a video or audio,
The controller includes:
And outputting a warning message through the output module when the contamination value of the pollution degree information is equal to or greater than the first reference contamination value,
And stopping the reciprocating motion of the piston when the contamination value of the contamination degree information is equal to or greater than a second reference contamination value that is larger than the first reference contamination value,
Hydraulic oil monitoring system.
Striking the object with the chisel in accordance with the reciprocating motion of the piston in the cylinder;
Sensing pollution degree information on the operating oil supplied to or discharged from the cylinder by a pollution degree sensor provided on a hydraulic line connected to a hydraulic port provided on the cylinder; And performing a warning operation when a predetermined condition is satisfied based on the contamination degree information detected by the controller,
How to monitor operating oil.

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