JP2603417Y2 - Excavator ramp control - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp control device for an excavator.

[0002]

2. Description of the Related Art Conventionally, a hydraulic excavator performs work by illuminating a work portion at the tip of the work machine by a work illumination lamp fixed to a work machine boom during night work. Figure 3
FIG. 1 is a side view of a conventional hydraulic power shovel. An arm 4 is pivotally mounted on a tip of a boom 2 of a working machine mounted on a main body 1 by a pin 3 at a tip thereof. The bucket 6 is pivotally mounted on a shaft.

[0003] A lamp 30 for work illumination is fixed to the boom 2 so as to illuminate an excavation work portion at night. The irradiation angle of the work illumination lamp 30 is α.

[0004]

The present invention is, however, work irradiation
The bright lamp 30 is fixed to the boom 2 and its irradiation angle α is limited . Therefore, as shown in FIG. 3 , if the tip end position of the bucket 6 is the position A, the work illumination lamp 3
Illuminated within the irradiation angle α of 0 ,
Work illumination lamp if tip position 8 is B or C
Since the light is not illuminated outside the irradiation angle α of 30, there is a problem that the excavation state is not known and the efficiency of night work is reduced.

As a countermeasure against this, the tip position of the bucket 6 is
Light so that even if the device 8 is in the position B or C
Expand the bundle to increase the irradiation angle α of the work illumination lamp 30
There is also a method. However, the irradiation surface spreads
Therefore, the illuminance decreases while the area illuminated wastefully increases.
The tip position 8 of the bucket 6 is dark and difficult to see
There is a title.

The present invention has been made in view of the above problems, and always irradiates the tip of the working machine at nighttime work.
An object of the present invention is to provide an excavator lamp control device capable of performing an efficient operation.

[0007]

For the purposes achieved SUMMARY OF THE INVENTION The lamp control system for the excavator according to the present invention, the vertical swing to the main body
The boom freely pivoted and the boom swings up and down with the first shaft
Arm movably supported and up and down on the arm by the second axis
A swingably supported by the work tool Rutotomoni, on the boom
In the excavator equipped with task lighting lamp, task lighting La
A third shaft for pivotally supporting the pump vertically.
A drive unit that allows the work illumination lamp to swing up and down around three axes
And location, task lighting to the line connecting the from the first axis to the third axis
Optical axis angle sensor that detects the optical axis angle formed by the optical axis of the lamp
And the line connecting the first axis to the third axis
The first angle for detecting the arm angle formed by the line connecting the second axis
The degree sensor and the line connecting the first axis to the second axis
The work implement angle formed by the line connecting the two axes to the tip of the work implement
And a second angle sensor for detecting, from the third axis to the first axis.
, The distance from the first axis to the second axis, and the second axis
The distance from the tool to the tip of the work implement is stored and the first and second
From the angle and each distance detected by the angle sensor, the first axis
Of the work implement from the third axis to the line connecting
Calculate the tip angle formed by the line connecting the ends, and then
In order to make the optical axis angle equal to the end angle,
The working illumination lamp is vertically swung .

[0008]

According to the above arrangement, the control device stores and stores
Each distance and each angle detected by the first and second angle sensors.
Calculated the tip angle, and the optical axis angle
Work lighting lamp through the drive to be equal to
Swing up and down. Therefore, the optical axis of the work illumination lamp always captures the tip position of the work implement regardless of the work posture.
You. Therefore, work requiring the most lighting during nighttime work
The tool tip position can be constantly illuminated, improving work efficiency and safety.
improves. In addition, the optical axis of the work lighting lamp is
Since it does not deviate from the position, irradiation of the work illumination lamp
There is no need to increase the angle. Therefore, work lighting lamp
Focusing and efficiency by narrowing the luminous flux and narrowing the irradiation angle
The tip position of the work implement can be illuminated brightly.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Implementation of an excavator ramp control device according to the present invention
An example will be described with reference to the drawings. In addition, "Conventional technology
The description of the same configuration as that described in “Section” is omitted.
You. First, a configuration diagram is shown in FIG. Lamp 11 is a driving device
10 is attached to the side surface of the boom 2. Drive equipment
The device 10 includes a case 12, a rotating shaft 13, a gear 14,
Pinion 15, motor 16, controller 17, optical axis angle
It has a degree sensor 18 and is configured as follows. The lamp 11 is fixed to a rotating shaft 13 supported by a case 12. A gear 14 is fixed to the rotating shaft 13 and meshes with a pinion 15 attached to a motor 16. The motor 16 is controlled by a controller 17 in a forward / reverse rotation control. An angle sensor 18 for detecting a relative angle between the boom 2 and the optical axis of the lamp 11 is mounted on the rotating shaft 13.

An angle sensor 21 for detecting the relative angle between the boom 2 and the arm 4 is attached to the pin 3 at the tip of the boom 2, and the arm 4 and the bucket 6 are attached to the pin 5 at the tip of the arm 4.
An angle sensor 22 for detecting a relative angle with the angle sensor 22 is mounted.

[0011] The control device 23 is an angle sensor 1 for the lamp 11.
8. It is connected to the angle sensors 21 and 22 of the working machine and the controller 17 of the motor 16.

Next, the operation will be described. Of lamp 11
Assuming one point 9 on the optical axis, the pin 3 at the tip of the boom 2
And the optical axis of the lamp 11
(Θ point 3-point 13-point 9) is θ0. B
Straight line connecting the pin 3 at the tip of the arm 2 and the rotating shaft 13
Between the cutting edge 8 of the bucket 6 and the rotating shaft 13
The angle formed by the line (∠point 3−point 13−point 8) is θ1.
A straight line connecting the pin 3 at the tip of the boom 2 and the rotating shaft 13
Between the line and the pin 3 at the base end and the pin 5 at the end of the arm 4
The angle (∠ point 5-point 3-point 13) formed by the connected straight line is θ2
And Between the pin 3 at the base end of the arm 4 and the pin 5 at the tip end
And the pin 5 and the blade 8 at the base end of the bucket 6
Angle (の point 3-point 5-point 8) with the straight line connecting
θ3.

When the operation is started, the angle sensors 18, 21,
22 detects θ0, θ2, and θ3, respectively, and outputs a signal to the control device 2
Send to 3. The control device 23 includes θ2, θ3 , the rotating shaft 13 and a pin.
3, a distance L1 between pins 3 and 5, a distance L2 between pins 3 and 5,
And the distance L3 between the pin 5 and the cutting edge 8 of the bucket 6
θ1 is calculated, θ0 is compared with θ1, and if they are different, a signal for angle correction is transmitted to the controller 17 and the motor 16
Drives the rotating shaft 13 to adjust θ0 to θ1
To control. As a result, the lamp 11 is always bucketed during operation.
The cutting edge 8 of the blade 6 comes to be grasped at the tip of the optical axis.

[0014] Next will be described the operation of the device by the flow chart of FIG. Lamp switch ON in step 51
Is YES or NO, and if NO, step 5
2 is END. If YES, the angle sensors 18, 21 and 22 detect θ0, θ2 and θ3 in step 53 and send signals to the controller 23, and in step 54 the controller 23 calculates θ1 as described above.

The controller 23 calculates the θ calculated in step 55
1 is compared with the current θ0, and if “ θ1 = θ0 ” is YES , the process returns to the step 51. If “ θ1 = θ0 ” is NO, at step 56, the magnitude of θ1 and θ0 is determined.

[0016] When ".theta.1> .theta.0" is YES, the controller 23 actuates the motor 16 by sending a signal to the control unit 17 of the lighting device 10, the anti-time look at the rotation shaft 13 from the direction shown
Counterclockwise and return to step 51 before detection
Repeat the comparison, of increasing the θ0 until "θ1 = θ0"
Let If ".theta.1>.theta.0" is NO, FIG rotary shaft 13
Rotate clockwise when viewed from the direction shown
Then, detection and comparison are repeated, and θ0 is reduced until “ θ1 = θ0 ” . Therefore, the optical axis of the lamp 11 always faces the tip 8 of the bucket 6. Note that the present invention
The embodiment is shown in the configuration of the embodiment described above and FIG.
Configuration For example, mounting position of lamp, shape of working machine, and figure
It is limited to the control flowchart shown in Fig. 2.
There is no.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a lamp control device of the present invention.

FIG. 2 is a flowchart illustrating the operation of the lamp control device according to the present invention .
It is a chart.

FIG. 3 is an explanatory view of a conventional power shovel lighting device.
You.

[Description of Signs] 1: Body 2: Boom 3: Pin 4: Arm 5: Pin 6: Bucket 10: Work illumination lamp driving device 11: Lamp 13: Rotating shaft 16: Motor 18, 21, 22: Angle sensor 23: Control device

Claims (1)

(57) [Scope of request for utility model registration] A boom (2) pivotally supported on a main body (1) so as to be vertically swingable , and a boom (2) is vertically swingable by a first shaft (3).
Upper and pivotally supported by the arm (4), the second axis to the arm (4) (5)
Under swingably supported by the implement (6) and a Rutotomoni, Bed
In the excavator equipped with a work lighting lamp on the arm (2), a third shaft (1) for pivotally supporting the work lighting lamp (11) vertically.
3) having a working illumination lamp (11) around this third axis (13)
The drive unit (10), which allows the arm to swing up and down, and the work illumination to the line connecting the first axis (3) to the third axis (13).
Light for detecting the optical axis angle (θ0) formed by the optical axis of the bright lamp (11)
The axis angle sensor (18) and the first axis with respect to the line connecting the first axis (3) to the third axis (13)
Arm angle (θ2) formed by the line connecting (3) to the second axis (5)
A first angle sensor (21) for detecting the angle and a second axis with respect to a line connecting the first axis (3) to the second axis (5).
A work tool consisting of a line connecting (5) to the tip (8) of the work tool (6)
A second angle sensor (22) for detecting an angle (θ3); a distance (L1) from the third axis (13) to the first axis (3);
Distance from the second axis (5) to the second axis (5) (L2)
The distance (L3) to the tip (8) of (6) is stored and the first and second distances are stored.
2 Angles (θ2 , θ3) detected by the angle sensors (21 , 22 ) and
From each distance (L1 , L2 , L3), from the first axis (3) to the third axis (13)
From the third axis (13) to the tip (8) of the work implement (6).
Calculate the tip angle (θ1) formed by the line connecting
Drive so that the optical axis angle (θ0) is equal to the tip angle (θ1).
The work illumination lamp (11) is swung up and down via the moving device (10).
Lamp control device of the excavator, characterized in that that (23).