JPH062980Y2 - Reclaimer's load detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a reclaimer detection device, and more particularly to a load depletion detection device that is most suitable for detecting a load breakage point of a reclaimer.

[Conventional technology]

The reclaimer is a yard loading machine that discharges ores and bulk materials by repeatedly excavating bulk materials such as ores loaded in the yard with a bucket wheel in a fixed movement pattern. Conventionally, as described in JP-A-57-98434, load shortage is detected by detecting that load power or load current of a bucket wheel drive motor exceeds a certain value.

[Problems to be Solved by the Invention] However, according to this method, the load detection of the bucket wheel is performed until there is no material to be discharged in the bucket of the bucket wheel, that is, until the bucket wheel rotates about half a turn. There is a drawback that the load cannot be detected and there is a large delay in detecting the load.

Therefore, an object of the present invention is to provide a reclaimer load depletion detection device that can accurately detect a recremer load depletion without delay.

[Means for solving problems]

The reclaimer load break point detection device according to the present invention has two distance measuring means provided on both sides of the bucket wheel, and detects the reclaimer load break point from the difference in the distance measurement data from the two distance measuring means.

〔Example〕

Next, the present invention will be described in more detail with reference to the drawings showing an embodiment of the present invention.

Referring to FIG. 1, in one embodiment of the present invention, a swing-type reclaimer is a boom 11 mounted on a traveling platform.
And a bucket wheel 1 provided at the tip of the boom 11.
2 and. The bucket wheel 12 scoops loose material in the raw material pile 13 while rotating with the drive motor,
It is dropped on the conveyor in the boom 11 and is carried out to the traveling machine stand and paid out.

Two distance measuring devices 14 for measuring the distance to the raw material pile 13 on both ends of the boom 11 and the bucket wheel 12
L and 14R are provided. The distance data from the distance measuring devices 14L and 14R is supplied to the control computer 15. The control computer 15 detects the dead point of the reclaimer from the two distance data from the two distance measuring devices 14L and 15R.

Next, the operation of this embodiment will be described with reference to FIG.
During the dispenser of the reclaimer (FIG. 2 (A)), the reclaimer moves in the direction of the arrow to dispense the raw material. At this time, if the distance measuring data of the distance measuring device 14R on the right side of the boom 11 is La and the distance measuring data of the distance measuring device 14L on the left side of the boom 11 is Lb, La = t and bucket wheel 12
The distance t from the tip of the cutout to the distance measuring device 14 is set, and this distance t is set as a set value here. La-Lb ＝
k, that is, the cutting distance when the reclaimer pays out with the bucket wheel 12.

Immediately before the end of the reclaimer payout (Fig. 2 (B)), the reclaimer has finished paying out to the end of the mountain. At this time, the distance measurement data La and Lb of the distance measuring device 14 are La = t, but change as Lb> La.

When the reclaimer is dead (Fig. 2 (C)), the distance measuring device 14
Distance measurement data La and Lb are La >> t and Lb >> La, and in some cases Lb = ∞. From this, La >> t and Lb >>
Controls the load of the bucket wheel 12 when La is a computer 15
Can be detected with.

In other words, unless the above conditions are satisfied, the control computer 15 does not determine that the load has run out. For example, even if the mountain range is collapsed and the distance measurement data La is larger than the set value t and larger than the distance measurement data Lb,
The control computer 15 does not determine that the load is exhausted. Therefore, the illustrated detection device can prevent malfunction due to collapse of piles and the like.

The distance measuring devices 14 (14L and 14R) are fixedly attached to both sides of the bucket wheel 12. In this case, when the boom 11 of the reclaimer is up and down, the laser beam from the distance measuring device 14 is emitted from the bucket wheel 1.
2 If the condition that it fits within the lower half circle and can irradiate the pile that is being dispensed is satisfied, that is, the vertical angle of the boom 11 of the reclaimer is small (for example, within ± 5 ° from the horizontal direction, The angle changes depending on the length of the boom 11). In this case,
The rotation driving means for correcting the irradiation direction of the laser beam is not necessary, and the apparatus becomes inexpensive.

In the embodiment shown in FIG. 1, the distance measuring device 14 is fixed to both sides of the bucket wheel 12, but as shown in FIG. 3, the distance measuring device 14 is rotated to rotate horizontally and vertically. Drive means 16 (16L and 16
R) may be attached to both sides of the bucket wheel 12. In this case, when the boom 11 of the reclaimer is undulated up and down, the rotation drive means 16 ensures that the laser beam emitted from the distance measuring device 14 always radiates in the horizontal direction.
It is corrected as shown in FIGS. 4 (A) to (C).

In the above-described embodiment, the state where the bucket wheel runs out of load was detected, but the operation shown in FIG.
Figure (C) → Figure 2 (B) → Figure 2 (A)) can be easily applied to confirm the landing point of the bucket wheel.

〔The invention's effect〕

As described above, according to the present invention, it is possible to eliminate the drawback that the conventional detection method has a large time delay in detection, accurately reduce the delay in detecting the dead end of the reclaimer, and improve the detection performance.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 (A)-
(C) is a diagram for explaining the operation of the embodiment shown in FIG. 1, and FIG.
The figure shows another example of how to attach the distance measuring device to the boom, and Figs. 4 (A) to (C) are diagrams showing the relationship between the distance measuring device and the boom in the example shown in Fig. 3. is there. 11 ... Boom, 12 ... Bucket wheel, 13 ... Raw material,
14 (14L and 14R) ... Distance measuring device, 15 ... Control computer, 16 (16L and 16R) ... Rotation driving means.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A reclaimer load for detecting a load break point of a reclaimer, comprising: a boom that performs a turning motion; In the breakage detection device, on both sides of the bucket wheel, and along the movement direction, provided at intervals in the movement direction,
It has first and second distance measuring means for measuring the first and second distances to the raw material, and further, the distance measuring means of any one of the first and second distance measuring means and the bucket. The distance to the cutout tip of the wheel is set as a set value, and the detection distance detected by the distance measuring means on the rear side in the moving direction of the first and second distance measuring means is larger than the set value, and the moving direction. When it is smaller than the detection distance detected by the distance measuring means on the front side,
A device for detecting a load of a reclaimer, comprising a control device for determining a load.