JP2005036954A - Pressure accumulation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To supply accumulated air pressure sufficiently to a work machine without causing pressure reduction even when distance between an air compressor 1 and the work machine connected to each other by a hose 2 is long, the work machine is driven continuously for a relatively long time, or a plurality of work machines are driven. <P>SOLUTION: This pressure accumulation device 3 is provided for relay to accumulate air pressure fed from the air compressor 1 to be supplied to the work machine. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

Industrial application fields

  The present invention relates to a pressure accumulator that accumulates air pressure sent from an air compressor and supplies the air pressure to a working machine using the air pressure.

  Conventionally, work is performed by directly connecting an air compressor working machine such as a rock drill or a paint spraying machine through a hose to an air compressor.

  However, when the work is performed by drawing the hose for a long time at a place away from the air compressor, the pressure loss in the hose increases cumulatively, and it is not possible to supply sufficient air pressure to the working machine.

  In addition, in the case where the air compressor has a plurality of air pressure supply ports, if the work in each work machine connected to it is concentrated at the same time, the air pressure supplied from the air compressor to each work machine decreases, Work has been hindered, such as temporarily interrupting work until pressure is restored.

Problems to be solved by the invention

  The problem to be solved is that if air pressure is supplied directly to a work machine such as a rock drill or paint spraying machine through a hose through an air compressor, the air pressure supplied to the work machine decreases due to loss as the hose becomes longer. It is to end up.

  In addition, when a plurality of work machines are connected to the air compressor, there is a problem that the air pressure supplied from the air compressor to each work machine decreases if the work on each work machine is concentrated simultaneously.

Means for solving the problem

  In the present invention, a relay pressure accumulating device for accumulating the air pressure sent from the air compressor is provided so that the air pressure supplied from the air compressor to the work machine does not decrease.

  The pressure accumulator is provided with a plurality of air pressure supply nozzles with open / close valves so that the air pressure accumulated can be supplied to the working machines connected to the supply ports.

  The present invention also includes a first pressure accumulation chamber for accumulating the air pressure sent from the air compressor, a second pressure accumulation chamber for accumulating the air pressure sent from the air compressor and supplying the working machine with the air pressure, A pressure accumulating device comprising a normally closed automatic valve provided at the threshold between the first pressure accumulating chamber and the second pressure accumulating chamber is provided, and automatically when the air pressure in the second pressure accumulating chamber becomes lower than the set pressure. The valve is opened so that the air pressure in the first pressure accumulation chamber is sent to the second pressure accumulation chamber.

  FIG. 1 shows the basic configuration of a pressure accumulator according to the present invention. After accumulating air pressure sent from an air compressor 1 through a hose 2 to a pressure accumulator 3, the pressure accumulator 3 is connected to the pressure accumulator 3 via a hose 4. The accumulated air pressure is supplied to the working machine 5 such as a rock drill or a paint spraying machine. In the figure, 6 is a pneumatic intake nozzle that takes in the air pressure sent from the air compressor 1, and 7 is a pneumatic supply nozzle with an open / close valve 8 that supplies the accumulated air pressure to the work machine 5. Yes.

  In addition, the pressure accumulator 3 is provided with a pressure gauge 9 and a drain plug 10.

  In such a configuration, air pressure is not supplied directly from the air compressor 1 to the work machine 5 but is once stored in the pressure accumulator 3 and then supplied to the work machine 5. Even if the distance between the working machine 5 and the work machine 5 is long, or even when the work machine 5 is continuously driven for a relatively long time, a sufficiently accumulated air pressure can be supplied to the work machine 5. It becomes like this.

  Air pressure is always sent from the air compressor 1 to the pressure accumulator 3, and pressure accumulation is promoted during a pause period of the work machine 5 that is intermittently driven.

  FIG. 2 shows a pressure accumulating device 11 provided with a plurality (four in this case) of air pressure supply nozzles 7 with an open / close valve 8, and each of the work machines 51 to 54 connected to each of the supply nozzles 7. The accumulated air pressure can be supplied.

  In this case, each of the work machines 51 to 54 is intermittently driven over several tens of seconds, and the driving state is varied so that the load is not concentrated on the pressure accumulator 11 at a time. Therefore, the air pressure that is sufficiently accumulated is supplied to each of the work machines 51 to 54 without the pressure in the pressure accumulating device 11 being lowered. Further, the pressure accumulation capacity of the pressure accumulator 11 is designed with a margin so that the air pressure sufficiently accumulated can be supplied to each of the work machines 51 to 54 even when the load is temporarily concentrated.

  FIG. 3 shows another embodiment of the present invention.

  Here, when accumulating the air pressure sent from the air compressor 1 and supplying the air pressure accumulated in the work machine 5, the first pressure accumulating chamber 121 for accumulating the air pressure sent from the air compressor 1, A second accumulator chamber 122 that accumulates the air pressure sent from the air compressor 1 and supplies the air pressure accumulated in the work machine 5, and is a normally closed automatic valve 13 between the accumulator chamber 121 and the accumulator chamber 122. The pressure accumulator 12 to which is attached is provided.

  In the pressure accumulating device 12 configured as described above, the automatic valve 13 is opened when the pressure in the pressure accumulating chamber 122 becomes equal to or lower than the set value by continuously driving the work machine 5 for a relatively long time. Thus, the air pressure in the pressure accumulation chamber 121 is supplementarily sent to the pressure accumulation chamber 122.

  Therefore, in the normal intermittent drive state of the work machine 5, it can be sufficiently covered by the air pressure accumulated in the pressure accumulating chamber 122, but the load on the work machine 5 increases or the work machine 5 continues for a relatively long time. When the pressure in the pressure accumulating chamber 122 is lowered due to being driven, the air pressure accumulated in the pressure accumulating chamber 121 is sent, so that the work machine 5 can be driven with sufficient air pressure. become.

  FIG. 4 shows a pressure accumulating device 14 that includes a first pressure accumulating chamber 141 and a second pressure accumulating chamber 142, and a normally closed automatic valve 13 is attached to the threshold between the pressure accumulating chamber 141 and the pressure accumulating chamber 142. The storage chamber 142 is provided with a plurality (two in this case) of air pressure supply nozzles 7 with open / close valves 8 to supply the air pressure accumulated in the working machines 51 and 52 connected to the respective supply nozzles 7. I can do it.

  Even in this case, since the driving states of the work machines 51 and 52 are different and the load does not concentrate at once in the pressure accumulating chamber 142, the pressure in the pressure accumulating chamber 142 does not decrease, and the pressure is sufficiently accumulated. The compressed air pressure is supplied to each work machine 51, 52. Further, the accumulated pressure capacities of the accumulator chamber 141 and the accumulator chamber 142 are designed with a margin so that the air pressure sufficiently accumulated in the work machines 51 and 52 can be supplied even when the load is temporarily concentrated.

effect

  As described above, according to the present invention, even if the distance between the air compressor connected by the hose and the work machine becomes long by providing the pressure accumulating device for relay that accumulates the air pressure sent from the air compressor, In addition, even if the work implement is driven continuously over a relatively long time, or a plurality of work implements are driven, a sufficiently accumulated air pressure can be supplied to the work implement without any trouble. Can be made to do.

  In the present invention, in particular, a reserve pressure accumulating chamber is provided in the pressure accumulating device, and when the air pressure supplied to the work machine decreases, the automatic valve opens to supplementarily supply the air pressure in the pressure accumulating chamber provided in the reserve. Thus, there is an advantage that air pressure that is always sufficiently accumulated can be supplied to the work implement in accordance with various driving states of the work implement.

  It is a simplification figure showing the basic composition of the pressure accumulator by the present invention.   FIG. 5 is a simplified configuration diagram showing a pressure accumulating device provided with a plurality of air pressure supply nozzles with open / close valves so as to be able to supply air pressure accumulated in working machines connected to the nozzles.   It is a simple block diagram which shows the pressure accumulation apparatus with which the normally closed automatic valve was attached to the threshold of a reserve pressure accumulation chamber and the pressure accumulation chamber which supplies air pressure to a working machine.   FIG. 6 is a simplified configuration diagram showing a pressure accumulating device in which a normally closed automatic valve is attached to a reserve pressure accumulating chamber in which a pressure accumulating chamber for supplying air pressure to a working machine is provided with a plurality of air pressure supply nozzles with open / close valves .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air compressor 2 Hose 3 Pressure accumulator 4 Hose 5 Work machine 51-54 Work machine 6 Pressure accumulator 7 Opening / closing valve 8 Supply port 91 1st pressure accumulation chamber 92 2nd pressure accumulation chamber 10 Automatic valve 111 1st pressure accumulation chamber 112 1st 2 pressure storage chambers

Claims (3)

  A pressure accumulating device for accumulating air pressure sent from an air compressor and supplying air pressure to a working machine using air pressure, and a nozzle for supplying air pressure with each open / close valve for supplying air pressure to a plurality of working machines, respectively. A pressure accumulating device is provided.   A pressure accumulator for accumulating air pressure sent from an air compressor and supplying the air pressure to a working machine using the air pressure, a first pressure accumulating chamber for accumulating air pressure sent from the air compressor, and an air compressor A second accumulator chamber that accumulates the air pressure sent from and supplies the air pressure to the work implement, and a normally closed automatic valve provided at the boundary between the first accumulator chamber and the second accumulator chamber, An accumulator characterized in that when the air pressure in the second pressure accumulating chamber falls below a set pressure, the automatic valve is opened so that the air pressure in the first pressure accumulating chamber is sent to the second pressure accumulating chamber. .   3. The storage device according to claim 2, wherein the second storage chamber is provided with air supply nozzles with open / close valves for supplying air pressure to a plurality of work machines.

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