JPH0881981A - Slewing flasher device for construction equipment - Google Patents

Abstract

PURPOSE: To give the warning of slewing start and the direction of slewing to the periphery by flickering and light-emitting left and right flash lamps for displaying left slewing at the time of the left stewing of an upper slewing body and flash lamps for displaying right slewing at the time of right slewing respectively. CONSTITUTION: Slewing flasher display sections 8L, 8R are disposed at the before and behind and left and right corner sections of an upper slewing body, and peripheral workers recognize a warning. An operator operates a control lever 21 for turning in the direction of a position (a), and pilot secondary pressure works to the pilot port 28 of a changeover valve 19 and a pressure switch 24L from a hydraulic remote control valve 20. Left and right flasher lamps 9, 11 for displaying left slewing are lit and flickered through a flasher driving unit 26L from a controller 25. Pilot secondary pressure works to a pilot port 30 and a pressure switch 24R in operation in the direction of a place (b) of the control lever 21, and lamps 10, 12 for displaying right slewing are lit and flickered. Accordingly, the direction of turning of the upper slewing body is decided, and the operator can take shelter surely and safely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper swing type construction machine,
The present invention relates to a turning flasher device for turning warning, which is equipped on a work vehicle or the like.

[0002]

2. Description of the Related Art FIG. 4 is a structural explanatory view of a turning direction display device disclosed in Japanese Utility Model Laid-Open No. 1-98748.
FIG. 5 is a view from the direction A in FIG. In the turning direction display device shown in FIG. 4 and FIG. 5, the turning mechanism 2 is attached to the undercarriage 1.
In the construction vehicle equipped with the upper revolving superstructure 3, the left and right revolving indicators a and a ′ provided on the upper revolving superstructure 3 and the revolving direction of the upper revolving superstructure 3 provided on the upper revolving superstructure 3 are detected. And a controller 5 which is provided on the upper swing body 3 and receives a signal from the sensor 4 to illuminate one of the left and right swing indicators a and a ′ by blinking and illuminate the other. .

[0003]

Conventionally, there have been hydraulic excavators equipped with a lighting indicator for turning warning at the left and right corners of the rear surface of the upper turning body. However, the hydraulic excavator is equipped with a work attachment that connects a boom, arm, bucket, etc. to the front part of the upper revolving structure, but it does not have a light indicator for turning warning on the front side of the upper revolving structure. Therefore, the operator in front of the hydraulic excavator may not be able to determine the start or direction of turning of the upper-part turning body.

[0004]

According to the present invention, there is provided a construction machine in which an upper revolving structure is connected to an upper portion of a lower traveling structure, and a flasher lamp for a revolving warning is arranged on an outer peripheral portion of the upper revolving structure. Flasher lamps are provided at the left and right corners of the front side of the upper revolving structure, or at the left and right corners of the front and rear sides respectively. Further, in a construction machine in which a means for detecting the turning direction of the upper revolving structure is provided and the flasher lamp is made to blink by inputting a signal from the detecting means to the controller, the front side and the rear surface side of the upper revolving structure. At least one of the left and right corners on both sides is provided with flasher lamps for displaying left turn and right turn of the upper revolving structure side by side, and the left and right corner flasher lamps for left turn display respectively and the controller. Are wired via one of the flasher drive units, and the flasher lamps for the right and left corners of the left and right corners are respectively wired to the above controller via the other flasher drive unit.

[0005]

[Function] Since the flasher lamps are arranged at the left and right corners on the front side of the upper revolving structure respectively, the worker on the front side of the upper revolving structure recognizes the blinking light emission of the flasher lamps to detect the flashing of the upper revolving structure. It is possible to evacuate after judging the turning. Further, in a hydraulic excavator in which flasher lamps are arranged at the left and right corners of the front and rear sides of the upper revolving structure, an operator at any position around the entire upper revolving structure can use one of the flasher lamps. Since the blinking light emission of the lamp can be recognized, it is possible to evacuate by determining the turning of the upper swing body.

Further, flasher lamps for respectively indicating a left turn and a right turn of the upper swing body are installed in parallel at the left and right corners of at least one of the front side and the rear side of the upper swing body,
The flasher lamps for left turn display of the left and right corners and the controller are wired via one flasher drive unit, and the flasher lamps for right turn display of the left and right corners and the controller are connected to each other. In the swing flasher device wired via the flasher drive unit, when the swing operation lever is operated in the left swing direction, for example, the swing direction of the upper swing body is detected by the detection means, and the signal from the detection means is input to the controller. It The controller makes a determination based on the above signal, and outputs a lighting blink command signal to one flasher drive unit from the controller. Since the flasher drive unit is energized, the left and right counterclockwise flasher lamps for turning display are alternately or simultaneously turned on and off. When the turning operation lever is operated in the right turning direction, the left and right flasher lamps for the right turning display are alternately or simultaneously turned on and off. Thereby, when the worker around the hydraulic excavator recognizes that the flasher lamp is lit or blinked, the direction in which the upper swing body is swung can be determined.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a front view of a hydraulic excavator equipped with the turning flasher device of the present invention. In the figure, 6 is a lower traveling body of the hydraulic excavator, 7 is an upper revolving body connected to the upper portion of the lower traveling body 6, and 8L and 8R are revolving flasher indications arranged on the left and right corners of the front side of the upper revolving body 7. And 9 and 10 are flasher lamps for turning left and turning right, which are provided in the turning flasher display portion 8L, respectively.
Reference numerals 1 and 12 are flasher lamps for turning left and turning right provided on the turning flasher display portion 8R, 13 is a work attachment mounted on the front part of the upper swing body 7, 14 is a boom of the work attachment 13, and 15 is a boom. Is an arm and 16 is a bucket as a work tool. Figure 2
FIG. 2 is a perspective view of the hydraulic excavator shown in FIG. 1. In the figure, reference numerals 17L and 17R denote turning flasher display portions arranged at the left and right corners on the rear surface side of the upper turning body 7 (the turning flasher display portion 17R is on the opposite side of 16L, so that FIG.
I can't see it).

FIG. 3 is a circuit diagram of the swing flasher device of the present invention. In the figure, 18 is a swing motor that drives the swing of the upper swing body 7, 19 is a swing pilot switching valve for controlling the swing motor 18, 20 is a hydraulic remote control valve, 21 is a swing operation lever of the hydraulic remote control valve 20, and 22 Is a main pump, 23 is a pilot pump, 24L and 24R are pressure switches that detect the rotation (forward and reverse) directions of the swing motor 18, respectively, and 25 is a controller, 26L and 26.
Each R is a flasher drive unit for driving a flasher. When the turning operation lever 21 is operated from the neutral position to the a position, the turning pilot switching valve 19 is switched to the low position, and the turning motor 18 makes a forward rotation, so that the upper turning body 7 starts turning to the left. .

Next, the structure of the turning flasher device of the present invention will be described with reference to FIGS. According to the present invention, the flasher lamps 9 and 1 are provided at the left end corner portion on the front surface side of the upper swing body 7.
0 on the right end corners of the flasher lamps 11 and 12
Further, flasher lamps (not shown) are provided at the left and right corners of the upper swing body 7, respectively. Further, pressure switches 24L and 24R for respectively detecting the left turn and the right turn of the upper swing body 7 are provided.
The signal from 4R is input to the controller 25. As shown in FIGS. 3 and 1, for the left and right corners of at least one of the front side and the rear side of the upper revolving structure 7 (in this embodiment, the front side is set as a representative example),
The left turn flasher display portion 8L has a left turn display flasher lamp 9 and a right turn display flasher lamp 1.
0 are arranged in parallel, and a flasher lamp 11 for left turn display and a flasher lamp 12 for right turn display are arranged in parallel on the right turn flasher display portion 8R, and the flasher lamps 9 and 11 for left turn display are provided. And the controller 25, the flasher drive unit 26L for driving one flasher
The flasher lamps 10 and 12 for right turn display and the controller 25 are wired via the other flasher drive unit 26R.

Next, the operation of the turning flasher device of the present invention will be described. In the embodiment of the present invention, the turning flasher display portions 8L, 8R, 17 are provided with flasher lamps at the left and right corners of the front and rear surfaces of the upper swing body 7, respectively.
Since L and 17R are provided, any of the flasher lamps of any of the above flasher lamps flashes and emits light even if the operator is at any position around the entire upper revolving structure, including the worker in front of the upper revolving structure 7. Therefore, it is possible to judge the turning of the upper-part turning body 7 and to evacuate. Further, according to the present invention, when the driver operates the turning operation lever 21 from the neutral position to the position a, the pilot secondary pressure derived from the hydraulic remote control valve 20 passes through the pipe line 27 and the pilot of the turning pilot switching valve 19 is piloted. Acts on port 28 and pressure switch 24L. Since the pressure switch 24L operates, its signal is input to the controller 25. The controller 25 makes a determination based on the above signal, and outputs a lighting blink command signal to the flasher drive unit 26L from the controller 25. The flasher drive unit 2
Since 6L is energized, the left and right counterclockwise flasher lamps 9 and 11 are alternately or simultaneously turned on and off. When the turning operation lever 21 is operated from the neutral position toward the C position, the pilot secondary pressure derived from the hydraulic remote control valve 20 passes through the conduit 29, and the pilot port 30 of the turning pilot switching valve 19 and the pressure switch. 24R
Act on. Since the pressure switch 24R operates, the signal is input to the controller 25. Controller 2
In step 5, determination is made based on the above signal, and the controller 25 outputs a lighting blink command signal to the flasher drive unit 26R. Since the flasher drive unit 26R is energized, the flasher lamp 1 for left / right turn display
0 and 12 are turned on or off alternately or simultaneously. Thereby, when the worker around the hydraulic excavator recognizes that the flasher lamp is lit or blinking, the direction in which the upper-part turning body 7 turns can be determined.

[0011]

According to the present invention, the flasher lamps are arranged at the left and right corners on the front side of the upper revolving structure, so that the worker on the front side of the upper revolving structure recognizes the flashing light emission of the flasher lamp. It is possible to evacuate by determining the turning of the upper-part turning body. Further, in a hydraulic excavator in which flasher lamps are arranged at the left and right corners of the front and rear sides of the upper revolving structure, an operator at any position around the entire upper revolving structure can use one of the flasher lamps. Since the blinking light emission of the lamp can be recognized, it is possible to evacuate by determining the turning of the upper swing body. Therefore, in particular, it is possible to prevent an accident in which a worker who is near the front side of the upper swing body collides with a bucket or the like at the tip of the work attachment without noticing it when the upper swing body starts swinging. At the left and right corners of at least one of the front side and the rear side of the upper revolving structure, flasher lamps indicating the left turn and right turn of the upper revolving structure are installed in parallel, and the left and right corners of the left and right corners are respectively rotated. The flasher lamp for the time display and the controller are wired via the flasher drive unit for driving one of the flashers, and the flasher lamp for the right turn display at each of the left and right corners and the above controller for driving the other flasher. In the turning flasher device wired via the flasher drive unit for the vehicle, when the turning operation lever is operated in the left turning direction or the right turning direction, the left turning display or the right turning display is provided at the left and right corners. The flasher lamps can be turned on or off alternately or simultaneously. Therefore, when the operator around the hydraulic excavator recognizes the flashing of the flasher lamp, the direction in which the upper-part turning body turns can be determined, so that the evacuation can be performed more reliably and safely.

[Brief description of drawings]

FIG. 1 is a front view of a hydraulic excavator equipped with a turning flasher device of the present invention.

2 is a perspective view of the hydraulic excavator shown in FIG. 1. FIG.

FIG. 3 is a circuit diagram of a turning flasher device of the present invention.

FIG. 4 is a structural explanatory view of a turning direction display device according to an embodiment of the prior art.

5 is a view from the direction A in FIG.

[Explanation of symbols]

 2 Revolving mechanism 3,7 Upper revolving structure 5,25 Controller 8L, 8R, 17L, 17R Revolving flasher display section 9, 10, 11, 12 Flasher lamp 13 Work attachment 18 Revolving motor 21 Revolving operating lever 24L, 24R Pressure switch 26L , 26R Flasher drive unit

Claims (3)

[Claims] 1. In a construction machine in which an upper revolving structure is connected to an upper part of a lower traveling structure, and a flasher lamp for a revolving warning is disposed on an outer peripheral portion of the upper revolving structure, left and right of a front side of the upper revolving structure. A turning flasher device for a construction machine, wherein the flasher lamps are arranged at respective corners. 2. A construction machine in which an upper revolving structure is connected to an upper part of a lower traveling structure, and a flasher lamp for turning warning is disposed on an outer peripheral portion of the upper revolving structure, the front side and the rear surface of the upper revolving structure. A turning flasher device for a construction machine, wherein the flasher lamps are arranged at the left and right corners of the side, respectively. 3. An upper revolving structure is connected to an upper part of the lower traveling structure, a flasher lamp for a revolving warning is arranged on an outer peripheral portion of the upper revolving structure, and means for detecting a revolving direction of the upper revolving structure is provided. In a construction machine in which a signal from the detecting means is input to a controller so that the flasher lamp blinks and emits light, an upper revolving structure is provided in at least one corner of the front side and the rear surface of the upper revolving structure. The flasher lamps for indicating the left turn and the right turn are installed in parallel, and the flasher lamps for left turn display at the left and right corners and the controller are wired through one flasher drive unit, and Connect the flasher lamps for right turn display at the corners on both ends and the controller via the other flasher drive unit. A swing flasher device for construction machinery.