JP2535650Y2 - Swivel flasher device - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] The present invention relates to an upper swing type construction machine,
The present invention relates to a turning flasher device for turning alarm provided in a work vehicle or the like.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of a conventional hydraulic excavator viewed from obliquely above. In the drawing, 1 is a lower traveling body of a hydraulic shovel, 2 is an upper revolving superstructure, 3 is a counterweight mounted on the rear of the upper revolving superstructure 2, 4L and 4R.
Reference numeral 5 denotes a turning flasher provided on the left and right of the counterweight 3, and reference numeral 5 denotes a turning motor. The turning flashers 4L and 4R are provided symmetrically to each other. FIG. 7 is a diagram showing the turning flasher 4L viewed from AA in FIG. In the drawing, reference numeral 6 denotes a frame of the revolving flasher 4L, 7 and 8 denote flasher valves, 9 denotes a sheet plate on which the flasher valves 7 and 8 are mounted, and 10 denotes a translucent coloring mounted on the outer surface side of the revolving flasher 4L. The cover plate 11 is a bolt for fastening the frame 6 to the counterweight 3.

In a hydraulic excavator, an upper revolving structure 2 is provided so as to be rotatable above a lower traveling structure 1, and right and left rear end corners of a counterweight 3 of the upper revolving structure 2 are connected to the rear side of the counterweight 3. The swivel flashers 4L and 4R are mounted over the side surface. When the hydraulic excavator turns the upper turning body 2, the turning flashers 4 </ b> L and 4 </ b> R are turned on (including blinking lights) for workers in the vicinity, and a turning alarm is issued.
Further, a translucent colored (color is red, yellow, or the like) cover plate 10 is attached to the outer surface side of the revolving flashers 4L and 4R. Therefore, during the operation of the hydraulic excavator, the red colored cover plate 10 behind the upper swing body 2 is always visible. In addition, even if the turning flasher 4L or 4R blinks at a site where direct sunlight is exposed in the daytime, there is a problem in that it is not possible to confirm the warning and it is dangerous.

[0004]

The problem to be solved is that during operation of a hydraulic excavator equipped with a prior art swivel flasher, a red colored cover plate at the rear of the upper swing body is always visible. In the daytime, if the turning flasher flashes in a place exposed to direct sunlight, the warning cannot be confirmed, which is dangerous.

[0005]

According to the present invention, a plate-like liquid crystal lens unit is mounted on the rear side and the side of the outer surface of a translucent colored cover plate mounted on the outer surface side of the revolving flasher, and the upper revolving unit is rotated. A controller is provided on the body, and a non-flashing signal of the turning flasher is input to the controller when the upper revolving body is not turned, so that the controller outputs a liquid crystal driving signal to the liquid crystal lens device based on the non-flashing signal. The liquid crystal lens of the revolving flasher performing the blinking operation by inputting a blinking signal of the revolving flasher performing the blinking operation to the controller so that the colored cover plate is not visible and the revolving upper body is rotated. The liquid crystal drive of the container was stopped, and the emission of the turning flasher was configured to be visible from the outside. Further, when the upper revolving unit is rotated, the rear side liquid crystal lens unit and the side liquid crystal lens unit of the left and right revolving flashers are alternately and synchronously driven.

[0006]

FIG. 1 is a circuit diagram of a swivel flasher device according to the present invention. In the figure, 5 is a swing motor, 12 is a pilot switching valve for controlling the swing motor 5, 13 is a remote control valve for swing, 14 and 15 are pilot valves of the remote control valve 13 for swing, 16 is an operation lever, and 17 is a pilot pressure. Source, 18 is a pressure switch, 19 is an electric circuit for a turning flasher, 20 is a power supply, 21 is a flasher unit, 22
L and 22R are left and right turning flashers, 23 is a controller, 24 is an input circuit for the controller 23, 25
Is a drive circuit, 26L and 27L are left turning flashers 2
The liquid crystal lens units attached to 2L, 26R and 27R are liquid crystal lens units attached to the right turning flasher 22R.
FIG. 2 is a perspective view of a main part of the hydraulic shovel equipped with the turning flashers 22L and 22R of the present invention. In the figure,
1 is a lower traveling body, 2 'is an upper revolving superstructure, and 3' is a counterweight mounted on the rear part of the upper revolving superstructure 2 '. FIG.
FIG. 3 is a diagram showing the turning flasher 22 as viewed from the line BB in FIG. 2. In the figure, 28L is a translucent colored cover plate,
26L is a liquid crystal lens device mounted on the rear side of the outer surface of the colored cover plate 28L, 27L is a liquid crystal lens device mounted on the side of the outer surface of the colored cover plate 28L, 29L is a frame, 30L
L is a flasher valve. FIG. 4 is a diagram showing the turning flasher 22R as viewed from CC in FIG. In the figure, 28R is a translucent colored cover plate, 26R is a liquid crystal lens device attached to the rear side of the outer surface of the colored cover plate 28R,
27R is a liquid crystal lens device mounted on the side of the outer surface of the colored cover plate 28R, 29R is a frame, and 30R is a flasher valve. FIG. 5 is a diagram viewed from DD in FIG.

Next, the structure of the turning flasher device of the present invention will be described with reference to FIGS. Left and right swivel flashers 2
2L and 22R translucent colored cover plates 28L and 28
Plate-like liquid crystal lens units 26L and 27L and 26R and 27R are mounted on the rear and side surfaces of the outer surface of R, respectively, and the controller 23 is disposed on the upper revolving unit 2 ', and the upper revolving unit 2' is turned. If you do not want to turn the flasher 22
By inputting the non-flashing signals of L and 22R to the controller 23, the liquid crystal driving signal is transmitted from the controller 23 based on the non-flashing signal to the liquid crystal lens units 26L, 27L,
26R, 27R to output the colored cover plate 28L
When the upper revolving unit 2 'is turned, the flashing signal of the turning flasher 22L or 22R, which is performing the blinking operation, is input to the controller 23 so that the turning operation is performed. The liquid crystal driving of the liquid crystal lens unit of the flasher 22L or 22R is stopped, and the light emission of the revolving flasher 22L or 22R can be viewed from the outside.

Next, the operation of the turning flasher device of the present invention will be described. When the turning operation of the upper turning body 2 'is not performed during the operation of the hydraulic excavator, the operation lever 16 of the turning remote control valve 13 is in the neutral position. Since the pilot pressure from the pilot pressure source 17 is not derived from the pilot valves 14 and 15, the pressure switch 18 is not switched, and both the turning flashers 22L and 22R are in a non-flashing state. Therefore, a non-flashing signal from the flasher unit 21 is input to the controller 23 through the input circuit 24. The controller 23 makes a determination based on the non-flashing signal, and outputs a liquid crystal drive signal through the drive circuit 25.
Output to the liquid crystal lens units 26L, 27L, 26R, 27R. This activates all the liquid crystal lens units, and makes the colored cover plates 28L and 28R invisible. Therefore, even if the swirling flashers 22L and 22R are visually observed, instead of seeing the red colored cover plates 28L and 28R, for example, gray is visible. That is, at this time, the turning alarm is not issued. Next, in order to turn the upper swing body 2 'to the left, the operation lever 16 is operated in the direction of the position a in FIG. Pilot pressure source 1
Since the pilot pressure from 7 is derived from the pilot valve 14 and acts on the pressure switch 18, the pressure switch 18 is switched. As a result, the upper swing body 2 'starts swinging, and the swing flashers 22L and 22R start blinking and lighting. The blink signal is input to the controller 23 through the input circuit 24. The controller 23 makes a determination and does not output a liquid crystal drive signal to the liquid crystal lens unit. Since the liquid crystal drive of the liquid crystal lens unit is stopped, the blinking light emission of the turning flashers 22L and 22R can be visually observed from the outside. In that case, the controller 2
3 and the turning flashers 22L and 22
The liquid crystal lens units 26L and 26R on the outer surface side and the liquid crystal lens units 27L and 27R on the side surface side of R are alternately and synchronously driven.

[0009]

As described above, according to the present invention, plate-like liquid crystal lens units are mounted on the rear and side surfaces of the translucent colored cover plate of the revolving flasher, respectively, and a controller is arranged on the upper revolving unit. When the upper revolving unit is not rotated, a non-flashing signal of the turning flasher is input to the controller. Based on the non-flashing signal, a liquid crystal driving signal is output from the controller to the liquid crystal lens unit, and the colored cover plate is turned on. When the upper revolving superstructure is swiveled, a flashing signal of the flashing flasher that performs a flashing operation is input to the controller, thereby driving the liquid crystal lens unit of the liquid crystal lens unit of the flashing flasher that performs the flashing operation. , And the light emission of the revolving flasher can be viewed from the outside. Further, when the upper revolving unit is rotated, the rear side liquid crystal lens unit and the side liquid crystal lens unit of the left and right revolving flashers are alternately and synchronously driven. As a result, in the hydraulic excavator equipped with the turning flasher device of the present invention,
When there is no risk of turning, the red colored cover plate of the turning flasher cannot be seen, so that it can be confirmed that the turning alarm has not been issued. Also, when turning, the turning flasher on the side at risk in the turning is displayed with flashing light emission through a red colored cover plate and a liquid crystal lens unit, so that the turning warning can be visually recognized by surrounding workers without fail. it can. Therefore, in the daytime, when the excavator performs turning operation in a place exposed to direct sunlight, the surrounding workers can check the flashing light emission of the turning flasher,
Accidents caused by turning can be prevented.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of the turning flasher device of the present invention.

FIG. 2 is a perspective view of a main part of the hydraulic excavator equipped with the turning flasher according to the present invention.

FIG. 3 is a diagram viewed from BB in FIG. 2;

FIG. 4 is a diagram viewed from CC in FIG. 2;

FIG. 5 is a diagram viewed from DD in FIG. 3;

FIG. 6 is a perspective view of a conventional hydraulic excavator.

FIG. 7 is a diagram viewed from AA in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower traveling body 2, 2 'Upper revolving superstructure 4L, 4R, 22L, 22R Revolving flasher 10, 28L, 28R Colored cover plate 13 Revolving remote control valve 14, 15 Pilot valve 18 Pressure switch 21 Flasher unit 23 Controller 26L, 26R, 27L, 27R liquid crystal lens unit

Claims (2)

(57) [Scope of request for utility model registration] 1. A construction machine comprising: an upper revolving body provided rotatably on an upper part of a lower traveling body; and a revolving flasher for turning alarm at left and right rear corners of the upper revolving body.
Plate-shaped liquid crystal lens units are mounted on the rear and side surfaces of the translucent colored cover plate attached to the outer surface of the revolving flasher, and a controller is arranged on the upper revolving unit to revolve the upper revolving unit. When not operating, by inputting a non-flashing signal of the turning flasher to the controller, the controller outputs a liquid crystal driving signal to the liquid crystal lens unit based on the non-flashing signal so that the colored cover plate is not visible, When the turning operation of the turning flasher is performed, the liquid crystal drive of the liquid crystal lens unit of the turning flasher performing the blinking operation is stopped by inputting a blinking signal of the turning flasher performing the blinking operation to the controller, and the light emission of the turning flasher is performed. A swivel flasher device configured to be visible from the outside. 2. The swivel flasher device according to claim 1, wherein when the upper swing body is swiveled, the left and right swivel flashers each have a rear liquid crystal lens unit and a side liquid crystal lens unit. Are driven alternately in synchronization with each other.