KR101739710B1 - Apparatus and method for controlling swing motor using swing brake - Google Patents

Apparatus and method for controlling swing motor using swing brake Download PDF

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KR101739710B1
KR101739710B1 KR1020167006049A KR20167006049A KR101739710B1 KR 101739710 B1 KR101739710 B1 KR 101739710B1 KR 1020167006049 A KR1020167006049 A KR 1020167006049A KR 20167006049 A KR20167006049 A KR 20167006049A KR 101739710 B1 KR101739710 B1 KR 101739710B1
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South Korea
Prior art keywords
swing
turning
motor
brake
upper body
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KR1020167006049A
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Korean (ko)
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KR20160045743A (en
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유승진
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두산인프라코어 주식회사
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2095—Control of electric, electro-mechanical or mechanical equipment not otherwise provided for, e.g. ventilators, electro-driven fans
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/128—Braking systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24—Safety devices, e.g. for preventing overload
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

The present invention relates to an apparatus and a method for controlling a swing motor using a swing brake, and more particularly to an apparatus and method for controlling a swing motor using a swing brake, in which a swing upper body is driven by an electric motor, When the temperature of the overheating motor is higher than a predetermined threshold temperature, it is possible to prevent overheating of the swirling motor by using a mechanical brake when the swirling motor is overheated by fixing the upper body by fixing the upper body and cutting off the current of the swing motor , A swing motor control device using a swing brake, and a method thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and a method for controlling a turning motor using a turning brake,

The present invention relates to an apparatus and a method for controlling a swing motor using a swing brake, and more particularly, to a swing motor control apparatus and method for controlling a swing motor using a mechanical brake in a hybrid construction machine, To a swing motor control apparatus using a swing brake and a method thereof.

Generally, a construction machine such as an excavator has a structure in which an upper revolving structure is pivotally coupled to a lower traveling body for the purpose of increasing the efficiency of work and the working range. Hydraulic excavators are implemented through hydraulics, such as turning the upper swivel and driving the bucket. The hydraulic excavator is controlled so that the swing brake is automatically released when any one of the boom, the arm, the bucket and the turning joystick is operated by the driver.

In recent years, studies have been actively conducted on a hybrid type construction machine in which the surplus oil price is rapidly increased, the surplus power of the engine is stored in the battery, and the insufficient power of the engine is supplied from the battery to improve the fuel efficiency.

Thus, a system in which an engine and an electric motor are used as a common power source and an electric energy storage device is referred to as a hybrid system. For example, hybrid systems include heavy-duty hybrid systems such as hybrid cars and excavators.

In the case of a hybrid excavator, the upper revolving body can be pivoted on the lower traveling body through a driving means such as a swing motor. When turning is to be stopped, the upper revolving body stops by the stop of the revolving motor. At the same time, the revolving braking device is driven to brak the upper revolving structure and fix the upper revolving structure to any external force and inertia. The hybrid excavator in which the swivel upper body is driven by an electric motor generates a swivel torque differently from a general hydraulic excavator. To this end, the hybrid excavator controls the current of the swing motor. Torque is generated in proportion to the current magnitude of the swirling motor.

On the other hand, unlike an engine-type excavator, a hybrid excavator is a harsh working condition in which a swing motor is suddenly overheated when it is operated for a long time on a slope. In a hybrid excavator swing motor at a slope, a load is applied to the upper body due to gravity even if the swing is not operated. In order to prevent the rotation of the upper body due to the load, a large current flows in the swing motor of the hybrid excavator. Considering that the calorific value of the swivel motor is proportional to the square of the current magnitude, the swivel motor may overheat if it is operated for a long time on the slope.

Therefore, the cooling system must be designed to have a sufficient capacity so that the swivel motor of the hybrid excavator is not overheated. The cooling system is to ensure stability. However, assuming that slope working conditions can be maintained constantly, there is a problem that the capacity of the swing motor cooling system must be extremely large.

The embodiments of the present invention are applicable to a case where a high current flows for a long time in a swing motor in a working environment (for example, a slope or a slope work area, etc.) in which the upper body posture of a hybrid construction machine in which the swing upper body is driven by a motor is continuously maintained, By detecting the operation of the switch or detecting that the upper body is in the stopped state and the temperature of the swing motor is higher than the predetermined threshold temperature, the swing brake is mechanically fastened to fix the upper body and cut off the current of the swing motor, Which can prevent overheating of the electric motor and protect it from overheating.

According to a first aspect of the present invention, there is provided a hybrid vehicle including a swinging motor for swinging an upper body of a hybrid construction machine, a turning joystick for controlling the swinging operation of the upper body by controlling the swinging motor, A swing brake for controlling the swing operation of the upper body; a swing brake control valve for controlling the swing brake; and a control unit for determining whether or not the swing joystick is operated, or when it is determined that the swing brake is released, And a control unit for controlling the swing brake control valve and for interrupting the current supplied to the swing motor so as to operate the swing brake when overheating occurs or when it is determined that a current equal to or higher than a critical current is continuously applied for a predetermined time or longer .

The swing brake control valve is selectively connected to the first high-pressure line and the hydraulic oil tank via the first solenoid valve SV1, and the first solenoid valve is electrically connected to the emergency stop switch so as to be controlled by the emergency stop switch signal .

The swing brake control valve is hydraulically connected to the second solenoid valve SV2 so as to selectively receive and supply the swing joystick signal pressure and the pilot signal pressure.

And a resistance temperature detector (RTD) sensor for measuring the coil temperature of the swing motor and transmitting the measured value to the control unit.

According to a second aspect of the present invention, there is provided a method for controlling an upper body of a hybrid construction machine that controls a turning motor by operating a turning joystick and turns or stops an upper body by the operation of the turning motor, Detecting whether the upper joystick is stopped or not or whether the upper joystick is stopped or not, confirming whether the turning joystick is not operated or the upper joystick is stopped according to a detection result, and if the temperature of the swirl motor is equal to or higher than a set temperature, Checking whether or not a current equal to or greater than the current is continuously applied for a predetermined time or longer, and operating the swing brake to limit the swing operation of the upper body, and blocking the current supplied to the swing motor at the same time .

The embodiments of the present invention have an effect of preventing the overheating of the swing motor during the slanting operation in the hybrid construction machine in which the swing upper body is driven by the swing motor. In other words, the embodiments of the present invention have an effect of preventing overheating of the swing motor by shutting off the current of the swing motor while maintaining the stance with the swing brake in the state where the swing motor is overheated (slope or inclined work area) .

Thus, the embodiments of the present invention have the effect of enhancing the stability of the hybrid construction machine regardless of the workplace.

In addition, embodiments of the present invention can increase reliability by reducing the occurrence of faults by controlling the operation of the swing brakes in the same mechanical manner as in general engine type construction machines, in most cases, not in emergency or special working conditions.

Further, the embodiments of the present invention can further reduce the overall size of the cooling system of the swing motor for preventing overheating of the swing motor.

1 is a configuration diagram of a hybrid excavator to which a swing motor controller according to an embodiment of the present invention is applied.
2 is a configuration diagram of a swing motor control apparatus using a swing brake according to an embodiment of the present invention.
3 is a configuration diagram of an emergency stop swing brake operated by a solenoid valve according to an embodiment of the present invention.
4 is a flowchart illustrating a method of controlling a swing motor using a swing brake according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description. Before describing the present invention in detail, the same components are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the case where it is judged that the gist of the present invention may be blurred to a known configuration, do.

1 is a configuration diagram of a hybrid excavator to which a swing motor controller according to an embodiment of the present invention is applied.

1, the hybrid excavator includes an engine 10, a generator 20, a pump 30, a control valve 40, a boom / arm / bucket / travel actuator 50, an energy storage device 60, And a swing motor (70).

The hybrid construction machine operates the generator (20) and the pump (30) by the power of the engine (10). The generator 20 generates electrical energy, and the pump 30 generates hydraulic energy.

The generator 20 generates electric energy to operate the swinging electric motor 70, and the surplus electric energy is stored in the energy storage device 60. Further, the swing motor 70 may be operated as a generator at the time of deceleration to produce electric energy. The swinging motor 70 may also be operated by electric energy charged in the energy storage device 60. [

The pump 30 discharges the working oil, and the working oil is supplied to the actuator 50 by the various control valves 40. That is, the pump 30 is directly coupled to the engine 10 to supply the hydraulic oil to the control valve 40. [ The pump 30 is rotated by the rotational force of the engine 10 and the operating fluid discharged from the pump 30 is supplied to the control valve 40. [

The actuator 50 consists of an actuator including a boom actuator, a female actuator, a bucket actuator, a traveling motor and an optional device.

On the other hand, when the hybrid construction machine is to turn the upper body, the swing motor 70 is controlled by the current value separately from the boom / arm / bucket / travel actuator 50, The body turns.

The rotating electric motor 70 is driven by receiving electric energy from the energy storage device 60 and the energy storage device 60 is supplied with electric power from the generator 20. In the situation where the swing motor 70 is decelerated, the kinetic energy of the swing device is regenerated by the energy storage device 60, and the power lost due to friction or the like is supplied from the generator 20 so that the voltage of the energy storage device 60 Keep it at the appropriate level.

2 is a configuration diagram of a swing motor control apparatus using a swing brake according to an embodiment of the present invention.

2, the swing motor control device (control valve) includes a swing state sensing part 210, a brake control part 220, and a swing brake 230. As shown in FIG.

The swing motor controller 200 according to the embodiment of the present invention receives the swing joystick pressure and the swing motor speed, current, and temperature and determines whether the swing operation state and the overheat state are satisfied. For reference, the swing joystick controls the swing motor to control the swing motion of the upper body.

The swing motor control device 200 may be configured to shut off the current of the swing motor 70 to protect the swing motor 70 when the overcurrent of the swing motor for maintaining the swing stopped state is excessively expected, do. Further, the swing motor control device 200 can maintain the attitude of the upper body by tightening the swing brake 230. [ For example, the swing motor controller 200 according to the embodiment of the present invention can be applied to a hybrid excavator in which a swing upper body is driven by a swing motor, but is applicable to other construction machines having a swing upper body.

Hereinafter, each of the components of the swing motor control apparatus 200 according to the embodiment of the present invention will be described.

The revolving brake 230 fixes the upper body of the construction machine, and when the boom, the arm, the bucket, or the turning joystick is operated, the revolving lock is released. The swing brakes 230 may be engaged or disengaged in accordance with the operation signals of the first and second solenoid valves for swinging the swing brakes 230. [

The turning state detecting unit 210 detects that the emergency stop switch is operated or detects that the upper body is in a stopped state and the temperature of the swing motor 70 is equal to or higher than a predetermined threshold temperature. To this end, the hybrid construction machine may be equipped with a turning joystick pressure sensor, a swinging motor speed sensor, a swinging motor current sensor and a swinging motor temperature sensor. Further, an emergency stop switch may be mounted on the hybrid construction machine to stop the turning upper body in an emergency. The turning state detection unit 210 can detect that the upper body is stopped from the sensor or the emergency stop switch or the temperature of the swing motor is higher than a predetermined threshold temperature.

The turning state detection unit 210 detects the turning joystick pressure and recognizes whether the driver operates the upper body or not, and recognizes whether the upper body is stopped by sensing the turning motor speed.

In relation to the prevention of overheating, the turning state detecting unit 210 determines whether the coil temperature of the swing motor is higher than a predetermined threshold temperature through a resistance temperature detector (RTD) sensor and recognizes the overheating state of the swing motor . Even if the upper body does not rotate, a large current close to the maximum value of the swing motor design can be continuously flowed to maintain the posture like the slanting operation. This case may be the most severe working condition when the heating condition of the swing motor 70 is taken as a reference. In actual turning operation, a current close to the motor design maximum value may appear momentarily only during acceleration and deceleration. Also, in the case of an AC (AC current) motor used in a hybrid excavator, the shape of the current flowing through the coil is a sinusoidal wave. The amount of heat generated by the current during rotation may be relatively small.

If it is detected that the emergency stop switch is operated or the upper body is stopped and the temperature of the swing motor is higher than a predetermined threshold temperature, the brake controller 220 controls the swing brake 230 And the upper body is fixed and the current of the swing motor is cut off. That is, when it is detected that the turning operation is not operated through the turning joystick pressure sensor of the hybrid excavator, the brake control unit 220 can fix the upper body by tightening the swing brake 230. When the swirl motor coil temperature is sensed as being overheated to a temperature close to the fault level through the sensor, the brake control unit 220 clamps the swing brake 230, It is possible to control to interrupt the current.

3 is a configuration diagram of an emergency stop swing brake operated by a solenoid valve according to an embodiment of the present invention.

3, the swing brake 230 includes a first solenoid valve 231, a second solenoid valve 232, a swing brake 233, and a swing brake control valve 234.

The brake control unit 220 sets the operation signals of the first and second solenoid valves 231 and 232 to low and if the stop state and the overheat state are detected in the turning state detection unit 210, And the operation signals of the first and second solenoid valves 231 and 232 can be changed to High to fasten the brake 233. [ In addition, if necessary, the swing brake 233 requires an emergency swing brake designed to be able to be tightened immediately.

The swing brake control valve 234 is a brake for controlling the swing brake. The swing brake control valve 234 is selectively connected to the first high pressure line and the hydraulic oil tank 235 via the first solenoid valve SV1 231 and the first solenoid valve 231 is connected to the emergency stop switch signal (Not shown) so as to be controlled by an emergency stop switch (not shown). In addition, the swing brake control valve 234 is hydraulically connected to the second solenoid valve (SV2) 232 to selectively receive and supply the turning joystick signal pressure and the pilot signal pressure.

The brake control unit 220 controls the first solenoid valve SV1 231 and the second solenoid valve SV2 232 in such a manner that a drive voltage is applied to control the swing brake 233. [ Here, the first solenoid valve SV1 (231) operates as a solenoid valve for swing brake emergency engagement. That is, the first solenoid valve SV1 231 is a solenoid-operated valve that releases the pressure for releasing the swing brake in an emergency so that the brake 233 is immediately engaged. And the second solenoid valve SV2 (232) operates as a solenoid valve for shutting off the SH pressure. That is, the second solenoid valve SV2 (232) is a solenoid-operated valve for shutting off the control flow path of the swing brake in an emergency. At this time, the PG shown in Fig. 3 is always maintained at a high pressure, and the SH becomes a high pressure when the joystick is operated.

4 is a flowchart illustrating a method of controlling a swing motor using a swing brake according to an embodiment of the present invention.

The brake control unit 220 sets the first operation signal p1 and the second operation signal p2 of the first and second solenoid valves 231 and 232 to Low at step S402. [p1, p2 = low], that is, in the case of a normal operation other than a slope operation, the swing brake is controlled in the same mechanical manner as that of the engine type construction machine in accordance with the turning joystick operation state. That is, when any one of the boom, the arm, the bucket, or the turning joystick is operated, the swing brake 230 is released.

The turning state detection unit 210 senses that the emergency stop switch is operated through steps S404 to S410 or detects that the upper body is in a stopped state and the temperature of the swing motor is higher than a predetermined threshold temperature.

Specifically, the turning state detection unit 210 checks whether the turning emergency state switch is OFF (S404). That is, the turning state detecting unit 210 detects whether a fault occurs in the swing motor controller 200 and the emergency stop switch is operated.

If it is determined in step S404 that the turning emergency state switch is off, the turning state detection unit 210 determines whether the turning joystick pressure signals s1 and s2 are "0" (S406). That is, the turning state detecting unit 210 senses the turning joystick pressure and detects whether the driver is willing to stop the upper body.

If the turning joystick pressure signals s1 and s2 are "0 ", the turning state detection unit 210 checks whether the coil temperature of the swing motor is higher than a preset threshold temperature (S408). The turning state detecting unit 210 senses the temperature of the swinging motor and determines whether the overheat is detected by increasing the temperature higher than the set value. Specifically, when the temperature of the coil of the swing motor is sensed by using a RTD sensor, the temperature of the swing motor becomes equal to or higher than a set value (for example, 90) as a superheating step approaching a fault level.

If it is determined in step S408 that the coil temperature of the swing motor 70 is equal to or higher than the predetermined threshold temperature, the turning state detection unit 210 determines whether the speed of the swing motor is equal to or greater than zero (S410). That is, the turning state detection unit 210 senses the speed of the swing motor to detect whether the upper body is stopped. The reason for detecting the speed of the swing motor to detect the stop state is that it takes a certain time until the swing upper body stops even if the turning joystick is operated to neutral by the inertia of the swing upper body. Here, the neutral of the turning joystick can be confirmed to be the turning joystick pressure signals s1 and s2 = 0 in step S406. That is, even if there is no pressure signal of the turning joystick, the upper body is not completely stopped, and when the brake is engaged during deceleration, an impact is applied to the upper body. This is because there is a possibility that damage to the revolving brake may be caused by excessive brake engagement. Therefore, the turning state detection unit 210 performs step S410 of checking whether the speed of the swing motor is "0 ".

The operating conditions corresponding to the steps S406 to S410 occur when the driver operates mainly the boom / arm / bucket on the slope. In other words, there is a case where the swing brake is released and a high current continuously flows to maintain the attitude with the swing motor.

The brake control unit 220 sets the first operation signal p1 and the second operation signal p2 of the first and second solenoid valves to high and drives the swing motor current To 0A (S412). Then, the brake control unit 220 performs the process again from step S404. When the first operation signal p1 and the second operation signal p2 of the first and second solenoid valves 231 and 232 are changed to High, even if the operator operates the joystick, the swing brake 230 is released And is tightened immediately.

If it is determined in step S404 that the turning emergency state switch is ON, the turning state detection unit 210 determines that the emergency state is in an emergency state and outputs the first operation signal p1 of the first and second solenoid valves, 2 Set the operation signal p2 to High and change the swirl motor current to 0A.

If the turning joystick pressure signals s1 and s2 are not "0 ", the coil temperature of the swirling motor is lower than the predetermined threshold temperature, or the swirling motor speed is lower than the predetermined threshold temperature If it is not "0 ", the turning state detection unit 210 performs the process from step S402 again.

On the other hand, the above-described swing brake control method can be implemented by a software program and recorded in a predetermined recording medium readable by a computer.

For example, the recording medium may be a hard disk, a flash memory, a RAM, a ROM, or the like embedded in each reproduction apparatus, or an external optical disk such as a CD-R or a CD-RW, a compact flash card, a smart media, have.

In this case, a program recorded on a computer-readable recording medium controls a turning motor by operating a turning joystick and turns or stops the upper body by the operation of the turning motor, in the upper body turning control method of the hybrid construction machine Detecting whether or not the turning joystick is operated or the rotation of the upper body is stopped and checking whether the turning joystick is not operated or the upper body is in a stop state according to the detection result; Determining whether a current equal to or higher than a predetermined temperature or a current equal to or higher than a threshold current is continuously applied to the swing motor for a predetermined period of time or longer; and operating the swing brake to limit the turning operation of the upper body, Step can be executed.

The functional operations and implementations described in the present specification may be embodied in digital electronic circuitry, computer software, firmware, or hardware, or a combination of any of the foregoing. The implementations described in the present disclosure may be implemented as one or more computer program products, that is, one or more modules associated with computer program instructions encoded on a program storage medium of the type for control of, or for execution by, Lt; / RTI >

While the drawings of the present invention depict operational processes, it should be understood that such operations should be performed in the order shown, in order to obtain the desired results, or that all illustrated operations should be performed. In certain cases, multitasking and parallel processing may be advantageous.

Further, specific embodiments have been described in the specification of the present invention. Embodiments are within the scope of the following claims. For example, the operations described in the claims may be performed in a different order, still achieving desirable results.

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

The present invention can protect the swing motor from overheating when a high current flows in the swing motor for a long time in a work area (for example, a sloping sloped slope work area) where the hybrid excavator needs to maintain the posture of the upper body. In this respect, it is not only the use of the related technology but also the possibility of commercialization or operation of the applied device, as it exceeds the limit of the existing technology.

Claims (9)

A swiveling electric motor for turning the upper body of the hybrid construction machine;
A turning joystick for controlling the turning motor to control the turning operation of the upper body;
A turning brake for restricting turning operation of the upper body;
A swing brake control valve for controlling the swing brake; And
If it is determined that the turning joystick is not operated or the swing brake is released and overheating of the swing motor exceeds a set temperature, or if it is determined that a current equal to or larger than the threshold current is continuously applied for a predetermined time or longer, The control unit controls the revolving brake control valve to interrupt the current supplied to the swing motor,
Wherein the upper structure swing control device of the hybrid construction machine includes: The method according to claim 1,
The swing brake control valve is selectively connected to the first high-pressure line and the hydraulic oil tank via the first solenoid valve SV1, and the first solenoid valve is electrically connected to the emergency stop switch so as to be controlled by the emergency stop switch signal Characterized in that the upper body rotation control device of the hybrid construction machine. The method according to claim 1,
Wherein the swing brake control valve is hydraulically connected to the second solenoid valve SV2 so as to selectively receive and supply the swing joystick signal pressure and the pilot signal pressure. The method according to claim 1,
Further comprising a resistance temperature detector (RTD) sensor for measuring the coil temperature of the swing motor and transmitting the measured value to the control unit. A top body turning control method of a hybrid construction machine for controlling a turning motor by operating a turning joystick and turning or stopping an upper body by the operation of the turning motor,
Detecting whether the turning joystick is operated or whether the upper body is stopped or not and confirming whether the turning joystick is not operated or the upper body is in a stop state according to the detection result;
Checking whether the temperature of the swing motor is equal to or higher than a set temperature or whether a current equal to or higher than a critical current is continuously applied to the swing motor for a predetermined time or more; And
Operating the swing brake to limit the swing motion of the upper body and simultaneously blocking the current supplied to the swing motor
Wherein the upper structure swing control method of the hybrid construction machine comprises: 6. The method of claim 5,
In the step of checking whether the upper body is in a stop state,
Further comprising the step of sensing a pressure of the turning joystick to detect whether the turning joystick is operated or whether the upper body is stopped or stopped. 6. The method of claim 5,
Before the step of operating the swing brake and at the same time blocking the current supplied to the swing motor,
When an emergency stop signal generated from the emergency stop switch is applied to the control unit,
Wherein the step of operating the swing brake and simultaneously cutting off the current supplied to the swing motor are performed. 6. The method of claim 5,
Wherein the turning brake is selectively supplied with the turning joystick signal pressure and the pilot signal pressure to switch the upper body turning control of the hybrid construction machine. 6. The method of claim 5,
Wherein the temperature of the swing motor is measured by measuring the coil temperature of the swing motor through a temperature-measuring resistor sensor.
KR1020167006049A 2013-09-26 2014-09-25 Apparatus and method for controlling swing motor using swing brake KR101739710B1 (en)

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KR20130114346 2013-09-26
KR1020130114346 2013-09-26
PCT/KR2014/008934 WO2015046901A1 (en) 2013-09-26 2014-09-25 Swing motor control apparatus using swing brake and method therefor

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KR20160045743A KR20160045743A (en) 2016-04-27
KR101739710B1 true KR101739710B1 (en) 2017-05-25

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