KR102181324B1 - Apparatus and method for early sensing scratch of hydraulic breaker - Google Patents

Abstract

The present invention relates to an apparatus and a method for early detection of a scratch on a hydraulic breaker. According to the present invention, the method comprises: a reference value setting step; a connection step of supplying working oil to a hydraulic breaker; a scrap detection step of measuring the amount of scraps; a control step; and an alarm step. According to the present invention, damage to a piston and a cylinder can be prevented.

Description

Scratch early detection device and early detection method of hydraulic breaker {APPARATUS AND METHOD FOR EARLY SENSING SCRATCH OF HYDRAULIC BREAKER}

The present invention relates to an early scratch detection device and an early detection method of a hydraulic breaker, and in particular, when a scratch occurs on a piston or cylinder of a hydraulic breaker, it is detected early before secondary damage occurs to the piston and cylinder, The present invention relates to an early scratch detection device and an early detection method for a hydraulic breaker whose structure is improved to prevent damage and leakage of pistons and cylinders.

In general, a breaker is a device used to crush rock by hitting a chisel that comes into contact with an object through a reciprocating motion of a piston.In large construction sites, hydraulic attachments mounted on heavy equipment vehicles such as excavators are mainly used. It is being used.

The speed of rock crushing works as one of the important factors due to construction deadlines. Therefore, the conventional breaker has a long stroke mode that lengthens 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 short stroke speed is improved even at the expense of some hitting 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 cause scratches on the outer surface due to the inflow of foreign substances or the like.

When an unintended scratch occurs on the piston, the oil film breaks on the scratched portion, resulting in unintended friction between the piston and the cylinder.

Such friction further increases the scratch size of the piston, resulting in an unintended vibration of the piston, a decrease in the impact force of the piston, and the occurrence and increase of scratches in the cylinder rubbing against the piston.

As a prior art related to the scratch detection of a hydraulic breaker, as disclosed in Korean Patent Application Publication No. 10-2018-0093159, "Hydraulic Breaker, Scratch Monitoring System, and Scratch Monitoring Method" (published date: 2018.08.21) previously filed by the applicant. Likewise, a cylinder provided with a plurality of hydraulic ports and a piston reciprocating within the cylinder by hydraulic pressure of hydraulic oil introduced or discharged through the hydraulic port-Here, the hydraulic oil is directly between the piston and the cylinder during the reciprocating movement As a scratch monitoring system that monitors the scratch of a breaker including-preventing contact, it is provided on the cylinder, and temperature information on frictional heat generated when the cylinder and the piston directly contact each other due to the scratch generated on the piston A temperature sensor that detects; And a controller that determines that a scratch has occurred and performs a warning operation when a predetermined condition is satisfied based on the sensed temperature information.

In addition, other prior art related to the scratch detection of hydraulic breakers is disclosed in Korean Patent Publication No. 10-1889646, "Hydraulic Breaker, Scratch Monitoring System, and Scratch Monitoring Method" (Registration Date: 2018.08.10) previously filed by the same applicant. As described above, as a scratch monitoring system for monitoring the scratch of a breaker having a cylinder provided with a plurality of hydraulic ports and a piston reciprocating in the cylinder by hydraulic pressure of hydraulic oil introduced or discharged through the hydraulic port, the cylinder And a magnetic field generator for generating a magnetic field to induce an eddy current to the piston located in a region inside the cylinder, and a scratch-producing portion of the piston as the piston reciprocates in a region inside the cylinder And a detection unit that detects a change in detection signal induced by the eddy current when passing through the piston during reciprocating movement of the piston, and is disposed at a first point on the cylinder to detect the detection signal for the first point. An electromagnetic sensor comprising a first electromagnetic sensor and a second electromagnetic sensor disposed at a second point spaced apart from the first point in a circumferential direction of the cylinder perpendicular to the reciprocating motion to detect the detection signal for the second point ; And when a predetermined condition is satisfied based on a difference value between the detected detection signal for the first point and the detection signal in the circumferential direction calculated using the detection signal for the second point, it is determined that a scratch has occurred. A scratch monitoring system including; a controller that performs a warning operation is disclosed.

The above-described conventional scratch detection and monitoring method can monitor the scratch detection only after a certain period of time has elapsed after a scratch occurs in the piston and cylinder of the breaker, so the performance of the hydraulic breaker is degraded due to leakage and internal damage, and the piston and cylinder Since there is a concern about secondary damage that requires repair due to wear and tear, there is a need for a technology that can detect scratches early and prevent secondary damage such as leakage and internal damage.

In addition, since it is difficult to detect the occurrence of scratches early in the existing prior art, the wear of the piston and cylinder is detected in a certain state, and the disassembly and replacement work of the piston or cylinder is required, which increases the repair cost and the work is interrupted. Will occur.

Korean Laid-Open Patent Publication No. 10-2018-0093159 "Hydraulic breaker, scratch monitoring system and scratch monitoring method" (Publication date: 2018.08.21) Korean Patent Publication No. 10-1889646 "Hydraulic Breaker, Scratch Monitoring System and Scratch Monitoring Method" (Registration Date: 2018.08.10)

The present invention was created to solve the above problems in consideration of the above problems, and its object is to detect a scratch in the piston or cylinder of the hydraulic breaker early, before secondary damage to the piston and cylinder occurs, and thereby, the hydraulic breaker It is to provide an early scratch detection device and an early detection method of a hydraulic breaker whose structure is improved to prevent damage and leakage of oil to the piston and cylinder of the cylinder.

The present invention for achieving the above object is a hydraulic oil provided with a bypass pipe for bypassing the hydraulic oil by being connected to the hydraulic oil supply line so that hydraulic oil supplied to the hydraulic breaker side through the hydraulic oil supply line is recovered to the hydraulic oil tank side without passing through the hydraulic breaker. With a bypass path; A valve connected to the hydraulic oil supply line and the bypass pipe of the hydraulic oil bypass path to change the supply direction of the hydraulic oil; The hydraulic oil is supplied to the hydraulic breaker side through the hydraulic oil supply line so that the hydraulic breaker is driven in the initial operating section, and the valve changes the supply direction of the hydraulic oil that has passed the initial operating section to the hydraulic oil bypass path side and discharges the hydraulic oil. A reference value that a proximity sensor arranged in a plurality of directions on the hydraulic oil supply line that is recovered to the hydraulic oil tank side detects the amount of scrap contained in the hydraulic oil discharged from the hydraulic oil bypass path side, sets the detected scrap detection amount as a reference value, and outputs it to the control unit. A setting unit; The amount of scrap for setting the reference value contained in the hydraulic oil discharged from the hydraulic oil bypass path side and arranged in a plurality of directions on the hydraulic oil supply line 70 side that is discharged from the hydraulic oil bypass path side and recovered to the hydraulic oil tank side A plurality of proximity sensors detecting the amount of scrap contained in the hydraulic oil discharged from the hydraulic breaker by switching the supply direction of the hydraulic oil by the valve after setting the reference value, and outputting the detected scrap amount to the control unit; A controller configured to determine that a scratch is generated and output a control signal when the amount of scrap detected by at least one of the plurality of proximity sensors exceeds an upper limit value compared to a set reference value; And an alarm means for recognizing a scratch occurrence situation to a user when a control signal from the control unit is applied.

The alarm means includes a display unit that displays the amount of scrap detected by the proximity sensor on the outside in real time, and an alarm member that generates an alarm sound when a scratch occurs, and the initial operation section of the hydraulic breaker circulates through the hydraulic breaker. It is an operation section in which the hydraulic oil circulation cycle is performed up to two times, the plurality of directions in which the plurality of proximity sensors are arranged are four directions, and the valve is a three-way valve.

Another characteristic element of the present invention, a method for detecting scratches of a hydraulic breaker, is an initial operation section in which the hydraulic oil supplied from the hydraulic oil tank is supplied to the hydraulic breaker side through the hydraulic oil supply line and is initially operated, and then through the hydraulic oil supply line from the hydraulic oil tank. The valve changes the hydraulic oil supply direction to the hydraulic oil bypass path side to supply the hydraulic oil during the initial operating section supplied, and the amount of scrap contained in the hydraulic oil during the initial operating section discharged from the hydraulic oil bypass path side is transferred to the hydraulic oil supply line side. A reference value setting step of setting a reference value by measuring a plurality of proximity sensors installed in a plurality of directions, and outputting the amount of scrap contained in the hydraulic oil during an initial operation section measured by the plurality of proximity sensors to a control unit; After the setting of the reference value is completed, the valve switches the supply direction of the hydraulic oil supplied to the hydraulic oil bypass path side to the hydraulic oil supply line side connected to the hydraulic breaker to switch and supply the hydraulic oil to the hydraulic breaker side; After the connecting step, a plurality of proximity sensors installed in a plurality of directions on the hydraulic oil supply line side discharged from the hydraulic breaker side and recovered to the hydraulic oil tank side measure the amount of scrap contained in the hydraulic oil to be recovered, and the measured scrap amount to the control side. A scrap detection step of outputting; In the scrap detection step, the measured value of the amount of scrap contained in the hydraulic oil measured by one or more of the plurality of proximity sensors is compared with the reference value set in the reference value setting step, and a measured value greater than a certain ratio of the reference value is detected. A control step of determining the occurrence and outputting a control signal; And an alarm step of recognizing a scratch occurrence situation to a user through an alarm means as the control signal is applied.

The initial operation section of the hydraulic breaker is an operation section in which hydraulic oil circulating cycles circulating through the hydraulic breaker are performed up to two times, the plurality of directions in which the plurality of proximity sensors are arranged are four directions, and the valve is a three-way valve. .

In the control step, when the amount of scrap contained in the hydraulic oil measured by at least one of the plurality of proximity sensors is 10% or more of the reference value, it is determined that a scratch is generated.

In the alarming step, the display unit quantifies and displays the amount of scrap detected from the plurality of proximity sensors in real time, and generates an alarm sound when the alarm member generates a scratch.

In the present invention, when a scratch occurs in a cylinder or piston of a hydraulic breaker, a measured value obtained by measuring the amount of scrap contained in the hydraulic oil using a proximity sensor arranged in the hydraulic oil supply line is the amount of scrap when the hydraulic breaker is driven before the scratch occurs. Since the occurrence of scratches can be recognized early by comparing with the reference value for, it has the advantage of preventing secondary damage such as leakage and internal damage caused by scrap generated during scratch.

In addition, the present invention has an advantage of improving product reliability since it is possible to measure in real time a measurement value obtained by digitizing the amount of scrap measured by a proximity sensor through a display unit provided in the excavator.

1 is a hydraulic circuit diagram schematically showing a hydraulic circuit applied to a general hydraulic breaker (a) and a hydraulic brake (b) of the present invention.
Figure 2 is an exemplary view schematically showing a state in which the present invention proximity sensor is arranged in the hydraulic oil supply line.
Figure 3 is a block diagram showing the early scratch detection device of the hydraulic breaker according to the present invention.
Figure 4 is a flow chart sequentially showing a scratch detection method of the hydraulic breaker according to the present invention.

The present invention enables the occurrence of scratches in cylinders or pistons to be recognized early on the basis of the amount of scrap contained in hydraulic oil when the hydraulic breaker is driven.

Hereinafter, an apparatus for detecting early scratches and an early detection method for a hydraulic breaker according to the present invention will be described in more detail through detailed description of embodiments with reference to the drawings.

In describing the present invention, if it is determined that a detailed description of a related known technology or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention and may vary according to user intentions or customs. Therefore, the definition should be made based on the contents throughout this specification. In addition, "including" a certain component means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

The early scratch detection device and early detection method of the hydraulic breaker according to the present invention will be described, but first, referring to Figs. 1 to 3, the hydraulic breaker through the hydraulic oil supply line 70 The hydraulic oil bypass path 100 having a bypass pipe connected to the hydraulic oil supply line 70 to bypass the hydraulic oil so that the hydraulic oil supplied to the (10) side is recovered to the hydraulic oil tank 50 without passing through the hydraulic breaker 10 Wow; A valve 101 connected to the hydraulic oil supply line 70 and the bypass pipe of the hydraulic oil bypass path 100 to switch the supply direction of the hydraulic oil; The hydraulic oil is supplied to the hydraulic breaker 10 through the hydraulic oil supply line 70 so that the hydraulic breaker 10 is driven in the initial operating section, and the valve 101 transfers the hydraulic oil that has passed through the initial operating section. After discharging by switching the supply direction to the 100) side, a proximity sensor 200 disposed in a plurality of directions on the side of the hydraulic oil supply line 70 where the hydraulic oil is recovered to the hydraulic oil tank 50 side, the hydraulic oil bypass path 100 A reference value setting unit 150 that detects the amount of scrap contained in the hydraulic oil discharged from the side, sets the detected amount of scrap as a reference value, and outputs it to the control unit 300; It is disposed in a plurality of directions on the hydraulic oil supply line 70 side discharged from the hydraulic oil bypass path 100 and the hydraulic breaker 10 side and recovered to the hydraulic oil tank 50 side, and discharged from the hydraulic oil bypass path 100 side The amount of scrap for setting the reference value contained in the hydraulic oil is detected, and after the reference value is set, the supply direction of the hydraulic oil is switched by the valve 101 to determine the amount of scrap contained in the hydraulic oil discharged from the hydraulic breaker 10 side. A plurality of proximity sensors 200 for outputting the detected scrap amount to the control unit 300; A control unit (300) determining that a scratch is generated when the amount of scrap detected by at least one of the plurality of proximity sensors (200) exceeds an upper limit value compared to a set reference value and outputs a control signal; And an alarm means 400 for recognizing a scratch occurrence situation to a user as the control signal of the control unit 300 is applied.

Referring to FIG. 1, as the hydraulic oil supplied from the excavator is selectively supplied to the interior of the hydraulic breaker 10 through the main valve 30, the piston (not shown) in the cylinder moves up and down in a reciprocating manner. The object is crushed through the chisel, the hydraulic oil passing through the inside of the cylinder is recovered to the hydraulic oil tank 50 side, and the hydraulic oil recovered into the hydraulic oil tank 50 is returned to the hydraulic breaker 10 through the main valve 30. ) Has a hydraulic circulation cycle supplied to the inside.

As described above, the hydraulic oil bypass path 100 includes a hydraulic oil bypass path 100 for bypassing and recovering the hydraulic oil in the hydraulic oil supply line 70 through a bypass pipe instead of the hydraulic breaker 10, and the hydraulic oil supply line. A 3-way valve 101 for switching the hydraulic oil supply direction to the hydraulic oil bypass path 100 provided with the 70 and the bypass pipe may be provided.

The reference value setting unit 150 is an initial operating section of the hydraulic breaker 10 (approximately 2 times of hydraulic oil circulation cycle through the hydraulic breaker 10) before switching the flow path to the hydraulic oil bypass path 100 made of a bypass pipe. ], and after the hydraulic oil passing through the initial section is discharged to the hydraulic oil bypass path 100 through the hydraulic oil bypass path 100 made of a bypass pipe by switching the flow path through the 3-way valve 101, the hydraulic oil bypass path ( It performs a function of setting the detected amount of scrap contained in the hydraulic oil discharged from 100) as a reference value and outputting it to the control unit 300.

After the setting of the reference value is completed, the hydraulic oil flow path is converted to be supplied to the hydraulic oil tank 50 side through the hydraulic breaker 10 using the 3-way valve 101, and then new hydraulic oil is replenished into the hydraulic breaker 10. Will be supplied.

The proximity sensor 200 is a hydraulic oil supply line to accurately detect the amount of scrap 80 contained in the hydraulic oil, since scrap 80 generated when a scratch occurs is contained in the hydraulic oil, as shown in FIG. The (70) rubber hoses are arranged to be spaced apart from each other in four directions, which are a plurality of directions.

As shown in FIG. 3, the control unit 300 compares the reference value set through the reference value setting unit 150 and the measured value detected through the proximity sensor 200 to exceed the measured value exceeding the reference value. When the value is more than 10% of the reference value, a control signal is output.

When the control signal output timing of the control unit 300 is less than 8% of the measured value compared to the reference value, the control signal may be generated too frequently due to the sensing error of the proximity sensor 200, and the measured value exceeds the reference value. If the value exceeds 15%, it may be difficult to detect scratches early, so it is preferable to set it within the range when the measured value is approximately 8-15% or more compared to the reference value, and more preferably, the excess value of the measured value is 10 compared to the reference value. It is limited to the case of more than %.

The alarm means 400 may include a display unit 410 that quantifies and displays the amount of scrap detected by the plurality of proximity sensors 200 or may include an alarm member 420 that generates an alarm sound.

For this reason, not only the user can easily recognize the scratch occurrence situation through the generation of an alarm sound when the control signal is output from the controller 300, but also the amount of scrap displayed through the display unit 410 can be measured in real time.

When the early scratch detection method of the hydraulic breaker using the early scratch detection device of the hydraulic breaker 10 will be described, referring to FIGS. 3 and 4, the hydraulic oil supplied from the hydraulic oil tank 50 is supplied from the hydraulic oil supply line ( After the initial operation section for initial operation by supplying to the hydraulic breaker 10 through 70), the valve 101 supplies hydraulic oil during the initial operation section supplied from the hydraulic oil tank 50 through the hydraulic oil supply line 70. The hydraulic oil supply direction is switched to the bypass path 100 to be supplied, and the amount of scrap contained in the hydraulic oil during the initial operating section discharged from the hydraulic oil bypass path 100 is transferred to the hydraulic oil supply line 70 in a plurality of directions. Set a reference value for setting a reference value by outputting the amount of scrap contained in the hydraulic oil during the initial operating section measured by the plurality of proximity sensors 200 and measured by the plurality of proximity sensors 200 Step (S1); After the setting of the reference value is completed, the valve 101 changes the supply direction of the hydraulic oil supplied to the hydraulic oil bypass path 100 to the hydraulic oil supply line 70 connected to the hydraulic breaker 10, and the hydraulic breaker 10 A connection step (S2) of switching and supplying the hydraulic oil to the) side; After the connection step (S2), hydraulic oil from which a plurality of proximity sensors 200 installed in a plurality of directions on the hydraulic oil supply line 70 side discharged from the hydraulic breaker 10 side and recovered to the hydraulic oil tank 50 side are recovered A scrap detection step (S3) of measuring the amount of scrap contained in the scrap and outputting the measured scrap amount to the control unit 300; In the scrap detection step (S3), the measured value of the amount of scrap contained in the hydraulic oil measured by one or more of the plurality of proximity sensors 200 is compared with the reference value set in the reference value setting step (S1) and the control unit 300 A control step (S4) of determining that a scratch has occurred and outputting a control signal when a measured value greater than a certain ratio of the reference value is detected; And an alarm step (S5) of recognizing a scratch occurrence situation to the user through the alarm means 400 as the control signal is applied.

In the reference value setting step (S1), the circulated hydraulic oil is circulated through the hydraulic oil supply line 70 toward the hydraulic breaker 10 and the hydraulic oil tank 50 two times through the initial driving of the hydraulic breaker 10, and then the circulated hydraulic oil is supplied to the hydraulic breaker. It is connected so that it is not supplied to the (10) side but is diverted to the hydraulic oil bypass path (100).

In addition, in the reference value setting step (S1), the hydraulic oil supply path may be switched so that the hydraulic oil is supplied to the hydraulic oil bypass path 100 by using the 3-way valve 101.

The pipe required for the breaker hydraulic oil supply line 70 may employ a rubber hose.

In the reference value setting step (S1), the amount of scrap contained in the hydraulic oil is supplied by bypassing the hydraulic oil after the initial driving of the hydraulic breaker 10 (approximately two hydraulic oil circulation cycles) to the hydraulic oil bypass path 100 side. Is set to.

Thereafter, after the setting of the reference value is completed, the hydraulic oil supply line 70 is connected to the hydraulic breaker 10 side so that the hydraulic oil is supplied back to the hydraulic breaker 10 and the hydraulic oil tank 50 side, and the new hydraulic oil is connected to the hydraulic breaker 10 side. To supply.

Subsequently, a detection sensor is disposed outside the breaker hydraulic oil supply line 70 adjacent to the hydraulic oil tank 50 so as to detect the occurrence of scratches in real time during the operation of the hydraulic breaker 10.

As an example, the detection sensor may employ a proximity sensor 200.

The proximity sensor 200, which is the detection sensor, may detect the amount of scrap in comparison with the amount of flow of the hydraulic oil for the scrap 80, which is an object.

The scrap detection step (S3) is to detect the amount of scrap contained in the hydraulic oil by using proximity sensors 200, which are respectively disposed to be spaced apart from each other in the four directions of the breaker hydraulic oil supply line 70.

When a scratch occurs in the piston or cylinder of the hydraulic breaker 10, the scrap 80 of metal material that has fallen off during the scratch process is contained in the flow of hydraulic oil passing through the inside of the breaker hydraulic oil supply line 70, so the breaker hydraulic oil In a position close to the supply line 70, the amount of scrap that is moved along the recovery flow of the hydraulic oil is sensed in four directions, which are a plurality of directions.

For this reason, the proximity sensor 200 is disposed in the outer four directions of the breaker hydraulic oil supply line 70 to accurately detect the amount of scrap contained in the hydraulic oil passing through the inside of the breaker hydraulic oil supply line 70 and measure the detected value. It is output to the control unit 300 side.

The control unit 300 compares a set reference value and a measured value as measured values are respectively applied from the side of the plurality of proximity sensors 200, and when the measured value is detected by 10% or more compared to the reference value, the hydraulic breaker 10 It is determined that a scratch has occurred in the piston or cylinder of the cylinder and outputs a control signal.

As a control signal is applied from the control unit 300, in the alarm step (S5), the occurrence of scratches is externally displayed and alarmed. For this purpose, the display unit 410 numerically displays the amount of scrap detected from the plurality of detection sensors. ) Or by providing an alarm member 420 such as a buzzer that generates an alarm sound, so that the user can easily recognize the scratch occurrence situation through the alarm sound generation, and the scrap displayed through the display unit 410 It has the advantage of being able to measure the amount in real time.

When the above-described scratch occurrence situation is recognized from the outside, the hydraulic oil exchange work can be performed, or after the hydraulic breaker 10 is disassembled to visually check the scratch occurrence area, post-measures such as replacement of parts can be performed.

On the other hand, the control unit 300 measures the reference value again in the reset state after completing the measures after the occurrence of the scratch, and measures the amount of scrap contained in the hydraulic oil of the hydraulic breaker 10 being restarted based on the measured reference value. It is compared with the measured value again.

Therefore, in the present invention, when a scratch occurs in the cylinder or piston of the hydraulic breaker 10, the measured value obtained by measuring the amount of scrap contained in the hydraulic oil using the proximity sensor 200 disposed on the hydraulic oil supply line 70 is scratched. Since the occurrence of scratch can be recognized early by comparing with the reference value for the amount of scrap when the hydraulic breaker 10 is driven before the occurrence of, secondary damage such as leakage and internal damage caused by the scrap generated during scratch can be prevented. Has the advantage of being able to.

In addition, the present invention has an advantage of improving product reliability since a measured value obtained by digitizing the amount of scrap measured by the proximity sensor 200 can be measured in real time through the display unit 410 provided in the excavator.

As described above, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is limited to the embodiments described above and should not be limited, and should be determined by the claims and equivalents as well as the claims to be described later.

That is, the present invention described above is not limited to the specific preferred embodiments described above, and anyone with ordinary knowledge in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims Of course, various modifications are possible, and such modifications are within the scope of the description of the claims.

10: hydraulic breaker 30: main valve
50: hydraulic oil tank 70: breaker hydraulic oil supply line
80: scrap 100: hydraulic oil bypass
150: reference value setting unit 200: proximity sensor
300: control unit 400: alarm means
410: display unit 420: alarm member

Claims (6)

A bypass that is connected to the hydraulic oil supply line 70 so that the hydraulic oil supplied to the hydraulic breaker 10 side through the hydraulic oil supply line 70 is recovered to the hydraulic oil tank 50 side without passing through the hydraulic breaker 10 to bypass the hydraulic oil A hydraulic oil bypass path 100 having a pipe;
A valve 101 connected to the hydraulic oil supply line 70 and the bypass pipe of the hydraulic oil bypass path 100 to switch the supply direction of the hydraulic oil;
The hydraulic oil is supplied to the hydraulic breaker 10 through the hydraulic oil supply line 70 so that the hydraulic breaker 10 is driven in the initial operating section, and the valve 101 transfers the hydraulic oil that has passed through the initial operating section. After discharging by switching the supply direction to the 100) side, a proximity sensor 200 disposed in a plurality of directions on the side of the hydraulic oil supply line 70 where the hydraulic oil is recovered to the hydraulic oil tank 50 side, the hydraulic oil bypass path 100 A reference value setting unit 150 that detects the amount of scrap contained in the hydraulic oil discharged from the side, sets the detected amount of scrap as a reference value, and outputs it to the control unit 300;
It is disposed in a plurality of directions on the hydraulic oil supply line 70 side discharged from the hydraulic oil bypass path 100 and the hydraulic breaker 10 side and recovered to the hydraulic oil tank 50 side, and discharged from the hydraulic oil bypass path 100 side The amount of scrap for setting the reference value contained in the hydraulic oil is detected, and after the reference value is set, the supply direction of the hydraulic oil is switched by the valve 101 to determine the amount of scrap contained in the hydraulic oil discharged from the hydraulic breaker 10 side. A plurality of proximity sensors 200 for outputting the detected scrap amount to the control unit 300;
A control unit (300) determining that a scratch is generated when the amount of scrap detected by at least one of the plurality of proximity sensors (200) exceeds an upper limit value compared to a set reference value and outputs a control signal; And
An early scratch detection device for a hydraulic breaker, comprising: an alarm means (400) for recognizing a scratch occurrence situation to a user as a control signal from the control unit (300) is applied. The method according to claim 1,
The alarm means 400 includes a display unit 410 that displays the amount of scrap detected from the proximity sensor 200 externally in real time, and an alarm member 420 that generates an alarm sound when a scratch occurs,
The initial operating section of the hydraulic breaker 10 is an operating section in which hydraulic oil circulation cycles circulating through the hydraulic breaker 10 are made up to two times,
The plurality of directions in which the plurality of proximity sensors 200 are disposed are four directions,
The valve 101 is a scratch early detection device of a hydraulic breaker, characterized in that the three-way valve. After the initial operating period of initial operation by supplying the hydraulic oil supplied from the hydraulic oil tank 50 to the hydraulic breaker 10 side through the hydraulic oil supply line 70, the hydraulic oil supply line 70 is supplied from the hydraulic oil tank 50 The hydraulic oil during the initial operation section is supplied by switching the hydraulic oil supply direction to the hydraulic oil bypass path 100 side by the valve 101, and contained in the hydraulic oil during the initial operating section discharged from the hydraulic oil bypass path 100 side. The amount of scrap is measured by a plurality of proximity sensors 200 installed in a plurality of directions on the side of the hydraulic oil supply line 70, and the amount of scrap contained in the hydraulic oil during the initial operation section measured by the plurality of proximity sensors 200 A reference value setting step (S1) of outputting to the controller 300 to set a reference value;
After the setting of the reference value is completed, the valve 101 changes the supply direction of the hydraulic oil supplied to the hydraulic oil bypass path 100 to the hydraulic oil supply line 70 connected to the hydraulic breaker 10, and the hydraulic breaker 10 A connection step (S2) of switching and supplying the hydraulic oil to the) side;
After the connection step (S2), hydraulic oil from which a plurality of proximity sensors 200 installed in a plurality of directions on the hydraulic oil supply line 70 side discharged from the hydraulic breaker 10 side and recovered to the hydraulic oil tank 50 side are recovered A scrap detection step (S3) of measuring the amount of scrap contained in the scrap and outputting the measured scrap amount to the control unit 300;
In the scrap detection step (S3), the measured value of the amount of scrap contained in the hydraulic oil measured by one or more of the plurality of proximity sensors 200 is compared with the reference value set in the reference value setting step (S1) and the control unit 300 A control step (S4) of determining that a scratch has occurred and outputting a control signal when a measured value greater than a certain ratio of the reference value is detected; And
An alarm step (S5) of recognizing a scratch occurrence situation to a user through an alarm means 400 as the control signal is applied; and early detection method for scratches of a hydraulic breaker. The method of claim 3,
The initial operating section of the hydraulic breaker 10 is an operating section in which hydraulic oil circulation cycles circulating through the hydraulic breaker 10 are made up to two times,
The plurality of directions in which the plurality of proximity sensors 200 are disposed are four directions,
The valve 101 is a method for detecting early scratches of a hydraulic breaker, characterized in that the three-way valve. The method of claim 3,
In the control step (S4), when the amount of scrap contained in the hydraulic oil measured by one or more of the plurality of proximity sensors 200 is 10% or more of the reference value, it is determined that a scratch is generated. The method of claim 3,
The warning step (S5) is characterized in that the display unit 410 quantifies and displays the amount of scrap detected from the plurality of proximity sensors 200 in real time, and the alarm member 420 generates an alarm sound when a scratch occurs. How to detect early scratches of hydraulic breakers.

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