JPH0540932Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a blasting device installed in an automatic pressing type wall profiling work vehicle.

[Background technology of the present invention]

In general, the separator of the blasting device installed on an automatic push type wall copying work vehicle moves along the wall surface in synchronization with the blast head attached to the tip of the telescopic cylinder attached to the bottom of the basket attached to the tip of the boom when copying the wall surface. Therefore, the weight is naturally limited. On the other hand, since the grit circulating through the separator decreases over time due to wear and leakage during blasting, it is necessary to increase the grit capacity stored in the separator in order to extend the continuous working time.

[The problem that the idea aims to solve]

However, for the reasons mentioned above, the separator of the blasting device equipped on the automatic pushing type wall surface copying work vehicle of the above-mentioned structure cannot increase the grit capacity stored in the separator, and therefore it is not possible to extend the continuous work time desired by the user.

In addition, in the blasting device installed on the above-mentioned automatic pressing type wall profiling work vehicle, when the separator lid is opened, the negative pressure inside the separator becomes approximately the same as atmospheric pressure. It was impossible to replenish grit.

[Purpose of the invention and means for solving the problem]

The present invention was devised in view of the above-mentioned problems, and its purpose is to provide an automatic pressing type wall profiling work that efficiently replenishes grit to the separator and allows continuous long-term blasting work. To provide a blasting device installed on a vehicle, grit is projected onto a basket installed at the tip of a boom using an impeller built into a blasting head, and is made to hit an object to be blasted. , in an automatic pressing type wall copying work vehicle equipped with a grit circulation type blasting device that collects the reflected grit with a separator and projects the collected grit onto the separator again with the impeller, A grit level detection switch is provided in the basket, a replenishment tank is provided in the basket, and a T-tube is connected to the lower part of the grit replenishment tank, one of which connects to the upper opening of the separator, and the other to the grit replenishment tank. It is configured to be connected to an upper opening of a replenishment tank and an air opening/closing valve, and a drop in the grit level in the separator is detected by the grit level detection switch, and the air valve is automatically opened in response to a detection signal from the level detection switch. The separator is configured to replenish a predetermined amount of grit from the grit replenishment tank to the separator.

[Effect]

By adopting the above configuration, continuous blasting operation for a long time is possible even if the separator capacity is small, which improves work efficiency.Moreover, the separator can be made smaller and the work equipment, that is, the blast head. Since it can be improved to a considerably smaller size, the work operation becomes extremely smooth. In addition, since the cumbersome replenishment of grit to the separator is automatically performed, operability is improved.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a blasting device installed in an automatic pressing type wall copying work vehicle according to the present invention will be described in detail below with reference to FIGS. 1 and 2.

FIG. 1 shows an example of a blasting device installed in an automatic pressing type wall profiling work vehicle according to the present invention.

In the figure, 1 is an automatic pushing type wall copying work vehicle, 2 is a turntable, 3 is a boom whose base end is pivoted to the turntable 2, and 4 is the boom 3.
5 is a basket equipped at the tip of the boom 3, and 6 is a blasting device mounted on the basket 5.

The blasting device 6 is moved forward and backward by the operation of a dust collector 6a installed at the rear of the basket 5, a separator 6b installed at the front of the basket 5, and a telescopic cylinder 6c installed at the bottom of the basket 5. The main part is composed of the constituent members of the blast head 6d, and during a predetermined blasting operation, the blast head 6d is located in front of the basket 5 (this blast head can be swung by a predetermined angle in the vertical and horizontal directions). is made to protrude forward and come into contact with, for example, the side surface of the docked ship body to be polished, that is, the object A to be blasted, etc. (see FIG. 2).

Incidentally, a level detection switch O for the grit 14 is provided below the separator 6b (on/off of this level detection switch O operates an air opening/closing valve T to be described later), and the grit 14 is installed in the basket 5. A supply tank P is equipped.

Further, a T-shaped pipe Q is connected to the lower part of the supply tank P, and one side of the T-shaped pipe Q is connected to the separator 6b.
The other is connected to the upper opening R, and the other is connected to the upper opening S of the supply tank P and the air opening/closing valve T.
It is connected to the connecting part t of.

In the figure, 7 is a grit supply hose, 8 is a grit recovery hose (grit recovery means), 9 is a dust collection hose, 10 is a dust hopper connected to the lower part (the tapered part) of the dust collector 6a, 10
11 is a blower; 12 is an impeller installed in the blast head 6d; 13 is a motor for driving the impeller 12; 14 is grit; 15 is a cut gate; This is a bag filter that is shakenably provided above the inside of the dust collector 6a.

Hereinafter, the operation of the blasting device installed in the automatic pressing type wall copying work vehicle according to the present invention will be explained based on the above-mentioned embodiments.

That is, the blasting device installed in the automatic pressing type wall profiling work vehicle according to the present invention is provided with a switch O for detecting a change in the level of the grit 14, especially the lower limit level, below the separator 6b, and a replenishment tank for the grit 14 in the basket 5. P, and a T-shaped pipe Q is connected to the lower part of the supply tank P, and the T-shaped pipe Q is connected to the lower part of the supply tank P.
One side of the tube Q is connected to the upper opening R of the separator 6b, and the other side is connected to the upper opening S of the supply tank P and the air opening/closing valve T.
During the blasting operation, when the level of grit 14 in the separator 6b decreases (due to wear etc.), the level detection switch O is turned OFF and the air opening/closing valve T is opened. When opened, the negative pressure inside the separator 6b causes air to flow through the air opening/closing valve T, the T-shaped pipe Q, and the separator 6b, and a predetermined amount of grit 14 is carried by the air flow from the supply tank P into the separator 6b. Supplied. Therefore, a constant amount of grit 14 within the separator 6b is always secured, allowing efficient continuous blasting work.

[Effect of idea]

As explained in detail above, the present invention is based on the idea that grit is projected onto a basket installed at the tip of the boom using an impeller built into the blast head, hits the object to be blasted, and is reflected after hitting the object. In an automatic push-type wall copying work vehicle equipped with a grit circulation type blasting device that collects the grit with a separator and projects the collected grit onto the separator again with the impeller, a level of grit is below the separator. A detection switch is installed, a supply tank is installed in the basket,
A T-tube is connected to the lower part of the grit replenishment tank, one of which is connected to the upper opening of the separator, and the other to the upper opening of the grit replenishment tank and the air opening/closing valve. , a decrease in the grit level in the separator is detected by the grit level detection switch, and a detection signal from the level detection switch opens the air valve to automatically replenish a predetermined amount of grit from the grit replenishment tank to the separator. Because of this structure, continuous blasting operation for a long time is possible even if the separator capacity is small, which improves work efficiency.Moreover, the separator can be made smaller, and the work equipment, that is, the blast head, can be made considerably smaller. This makes work operations much smoother. Furthermore, since the cumbersome replenishment of grit to the separator is automatically performed, it has various excellent effects such as improved operability.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing an example of a blasting device installed in an automatic pressing type wall copying work vehicle according to the present invention, and FIG. 2 is an explanatory diagram showing the configuration of the blasting device. 1...Self-propelled work vehicle, 2...Turntable,
3... Boom, 4... Lifting cylinder, 5... Basket, 6... Blasting device, 6a... Dust collector,
6b... Separator, 6c... Telescopic cylinder, 6
d... Blast head, 7... Grit supply hose, 8... Grit recovery hose, 9... Dust collection hose, 10... Dust hopper, 10a... Dust gate, 11... Blower, 12... Impeller, 13
... Motor, 14 ... Grit, 15 ... Cut gate, 16 ... Bag filter, O ... Level detection switch, P ... Supply tank, Q ... T-shaped pipe,
R...Upper opening, S...Upper opening, T...Air opening/closing valve, t...Connecting portion.

Claims (1)

[Scope of utility model registration request] The impeller built into the blast head projects grit into a basket installed at the tip of the boom and causes it to hit the object to be blasted. After hitting the object to be blasted, the reflected grit is collected by a separator, and In an automatic pressing type wall copying work vehicle equipped with a grit circulation type blasting device that uses the impeller to project the grit collected during the process, a grit level detection switch is installed below the separator, and a grit replenishment tank is installed in the basket. A T-tube is connected to the lower part of the grit replenishment tank, one of which is connected to the upper opening of the separator, and the other is connected to the upper opening of the grit replenishment tank and the air on/off valve. A decrease in the grit level in the separator is detected by the grit level detection switch, and a detection signal from the level detection switch opens the air valve to automatically replenish a predetermined amount of grit from the grit replenishment tank to the separator. A blasting device equipped on an automatic pressing type wall profiling work vehicle.