JPH1163890A - Firing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain a compact configuration with a simple structure. SOLUTION: A firing driving gas chamber 33 is formed at a base end of a firing cylinder 3 to which a firing member 21 is slidably fitted. A firing air opening 36 for use in communicating a firing pressure accumulating chamber 35 formed at an outer circumferential part of the base end side of the firing cylinder 3 with the firing driving gas chamber 33 is formed at a cylinder wall. The firing air opening 36 is closed by a closed surface 23a at an outer circumference of a piston member 23 of the charged firing member 21, energizing air for a high pressure air bomb for triggering operation is fed from a triggering port 37 into the firing driving gas chamber 35 through a firing valve to push out the piston member 23. As a result, the firing air opening 36 is released, high pressure air in the firing pressure accumulated chamber 35 is fed at once into the firing driving gas chamber 33, and then the firing member 21 is fired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection apparatus for flying a projection object, a projection capsule, or the like to a distant place using compressed air.

[0002]

2. Description of the Related Art Conventionally, the applicant of the present invention has disclosed Japanese Patent Application Laid-Open No. 7-3328.
No. 94 proposes a projection device using compressed air. As shown in FIG.
1 is slidably accommodated, and a firing cylinder 43 in which a firing air chamber 42 is formed in a lower portion, and an air supply hole 4 for a cylindrical firing air tank 44 and a firing air chamber 42 in a lower portion of the firing cylinder 43.
5 has a firing drive unit 47 in which a firing valve element 46 for opening and closing the valve 5 is disposed. Before firing, the firing valve element 46 has a biasing force of a spring 48 and a firing air tank 44. The air supply hole 45 is closed by the urging force via the pressure receiving step portion 49 receiving the compressed air pressure of the first embodiment. As a result, the firing valve body 46 is pulled down to open the air supply hole 45.

[0003]

However, according to the above configuration, the. Since the firing air chamber 42 is arranged on the tip (upper end) side of the firing air tank 44, the overall length of the firing drive unit 47 is long. . There are a fixed piston 51 for driving the firing valve body 46 to the open side, a starting air chamber 42, and a spring 48 and a cushion 52 for urging the firing valve body 46 to the closed side. There was a problem.

An object of the present invention is to provide a projection apparatus which can solve the above-mentioned problems and can be constructed compactly with a simple structure.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a projection member slidably fitted in a launch tube, and a projection member provided in a base end portion of the launch tube. The formed projection drive air chamber, the accumulator chamber for projection formed on the outer periphery of the base end portion of the launch cylinder, and the accumulator chamber for projection formed on the cylinder wall of the launch cylinder communicate with the projection drive air chamber. A projection air port, a piston member provided at a base end of the projection member and capable of closing the projection air port at a closed surface portion of the outer periphery at the time of loading, and injecting starting air from a base end side of the projection drive air chamber. Projection starting means capable of pushing out the piston member and opening the projection air port.

According to the above construction, the projection driving air chamber is formed in the base end portion of the launching cylinder, and the projection accumulator is formed in the outer peripheral portion thereof and communicates with the projection air port. The length can be shortened, and a compact configuration can be achieved. Further, since the projection air port formed on the side wall of the firing cylinder is closed by the closed surface portion of the outer periphery of the piston member of the projection member that slides along the side wall, it is affected by the pressure of the compressed air filled in the pressure accumulation chamber for projection. Except for the special case of downward firing, no other restraining means is required and the projection air port can be reliably closed by the weight of the projection member. Further, the starting air pressure by the projection starting means can be small. Therefore, a means for restraining the valve member in the closed state and a buffer member as in the related art are not required, and the structure can be simplified.

According to a second aspect of the present invention, the projection member comprises a projection capsule and a piston member which is disposed at the base end of the projection capsule so as to be detachable. According to the above configuration, the flight distance of the projection capsule can be extended.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Here, an embodiment of a projection device according to the present invention will be described with reference to FIGS.

As shown in FIGS. 4 and 5, this projection device is mounted on a projection base 1 which is fixed on the ground and whose launch angle is adjustable. May be set to the launch angle.),
A cylindrical launching cylinder 3 is disposed via a reaction damper 2,
A firing valve device 4 serving as a projection drive unit at the base end of the firing cylinder 3
Is provided.

The support frame 1 is provided on a frame 6 fixed on the ground by an anchor 5 at the base end side, and an elevating frame 8 whose base end is rotatably supported in a vertical direction via a support pin 7. The leg frame 9 is rotatably attached to the tip of the elevation frame 8. The stopper rod 9 a at the tip of the leg frame 9 is engaged with the locking groove 6 a of the gantry frame 6. The angle of the raising frame 8 can be adjusted in multiple stages. In addition, the launching cylinder 3 is provided on the raising frame 8 via the reaction damper 2. Further, a capsule lock device 10 that can prevent the projection member 21 from coming off when the elevation angle is set to a minus value is provided on the distal end side of the firing valve 4 of the firing cylinder 3.

In FIG. 4, reference numeral 11 denotes a high-pressure air cylinder for supplying pressurized compressed air from a high-pressure hose 12 to a firing valve device 4 via a pressure-accumulating valve 13, and reference numeral 14 denotes a firing valve from the high-pressure hose 15 to the firing valve device 4. 16 is a high-pressure air cylinder for trigger which supplies compressed air for firing via 16.

As shown in FIGS. 1 to 3, a projection member 21 which is slidably fitted to the launch cylinder 3 by this projection device and is launched is a cylindrical projection capsule 22 and a base end of the projection capsule 22. And a piston member 23 which also serves as a rear lid, which is disposed in the portion so as to be separable.

In the firing valve device 4, a projection driving air chamber 33 is formed at the base end of the firing cylinder 3 by a cylinder cylinder 31 and a closing head 32. A cylindrical pressure accumulating chamber 35 for projection is formed on the base end side outer peripheral portion of the firing cylinder 3 by the tank forming member 34, and compressed air for projection is supplied from the supply port 35 a by the high-pressure hose 12.

The cylinder wall of the firing cylinder 3 and the cylinder cylinder 31
Is formed with a plurality of projection air ports 36 communicating the base end side of the projection accumulator chamber 35 and the projection drive air chamber 33, and projects the projection compressed air accumulated in the projection accumulator chamber 35 at a stretch. The projecting member 21 can be sent out to the driving air chamber 33 and fired.

The piston portion 23 includes a projection capsule 22.
A large-diameter portion 23A having the same diameter as the above and a small-diameter portion 23B that is slidable and closely fitted in the cylinder tube 31 are opened from the front surface to the back side to reduce the weight. On the outer peripheral surface of the small-diameter portion 23B, a closed surface portion 23a for closing the projection air port 36 at the time of loading is formed, and seal rings 23b are respectively mounted in seal grooves around the entire circumference before and after the closed surface portion 23a.

The closing head 32 of the projection driving air chamber 33 is formed with a trigger port 37 to which the high-pressure hose 15 of the high-pressure trigger cylinder 14 is connected. And the compressed air for firing through the firing valve 16 and the driving air chamber 33.
And projecting the piston portion 23 and the projection capsule 22 a little, thereby opening the projection air port 36 to the closed surface portion 23.
a, the compressed air for projection in the pressure accumulating chamber for projection 35 can be sent to the projection driving air chamber 33 at a stretch and the projection member 21 can be fired, and the high-pressure air cylinder 14, the high-pressure hose 15, the firing valve 16, The triggering port 37 constitutes a projection activation unit.

As shown in FIG. 6, the capsule lock device 10 includes a retractable air cylinder 43 mounted at a position corresponding to a through hole 41 formed in the firing cylinder 3 via a mounting member 42, and Lock pin 44 which is moved into and out of firing cylinder 6 through through hole 41 by retreat air cylinder 43
It is composed of The retractable air cylinder 43 is of a single-acting type including a return spring 45, and further includes a retractable position detecting sensor 48 for detecting the position of the lock pin 44 by a magnet 47 incorporated in a piston 46.
Is provided, a release position A indicated by a solid line, a loading confirmation position B and a capsule fixing position C indicated by a virtual line are detected. As a driving source, as shown in FIG. 4, a branch high-pressure hose 52 with a release valve 51 interposed is connected to the release air chamber 49 of the release air cylinder 43 from the trigger high-pressure air cylinder 14. Turn ON to release air chamber 49
By supplying high-pressure air to the lock member, the lock pin 44 is retracted and the lock of the projection member 21 can be released. This makes it possible to reliably prevent the projection member 21 from slipping out when moving with the projection member 21 loaded or when setting the launch angle below the horizontal line.

Next, the operation of the projection device will be described. . The projection mount 1 is installed by the anchor 5, and the high-pressure hose 12 of the high-pressure air cylinder 11 for pressure accumulation is connected to the supply port 35 a, and the high-pressure hose 15 of the high-pressure air cylinder 14 for trigger is connected to the trigger port 37.

[0019] As shown in FIG. 1, the projecting member 21 is loaded into the firing cylinder 3 from the firing port, and the projecting air port 36 is closed by the piston member 23. . The accumulator valve 13 is opened, and the accumulator for projection 35 is filled with high-pressure air.

[0020] The engaging position of the locking groove 6a of the stopper rod 9a of the leg frame 9 is set to determine the inclination angle of the elevation frame 8, and the firing angle of the firing cylinder 3 is set. . Open the firing valve 16 and open the high pressure air cylinder 14 for the trigger.
Is supplied to the projection drive air chamber 33,
As shown in FIG. 2, the piston portion 23 and the projection capsule 22 are slightly pushed out, and the closing surface portion 23 a of the piston portion 23 slides and opens from the closed position of the projection air port 36.
As a result, the compressed air for projection in the accumulator for projection 35 is sent to the projection driving air chamber 33 at a stretch, and the pressure of the compressed air is used as shown in FIG.
As shown in the figure, the projection member 21 is fired.

[0021] The piston member 23 of the projection member 21
Transmits the projecting force of the compressed air to the capsule member 22 and then separates from the capsule member 22 during the flight and falls first, so that only the capsule member 22 reaches a distant place.

According to the above embodiment, the accumulating chamber for projection 3
Since the projection drive air chamber 33 is formed in the base end side of the launch cylinder 3 in the inside 5 and communicated with the projection air port 36, the length of the launch valve device 4 can be shortened, and it can be made compact. In addition, a projection air port 36 formed on the side wall of the firing cylinder 3
Is opened and closed by a closed surface portion 23a on the outer periphery of the piston portion 23 of the projection member 21 that slides in a direction orthogonal to the projection air port 36 along the side wall, so that the compressed air filled in the pressure accumulation chamber 35 for projection allows the piston member to be opened and closed. Since the projection air port 36 can be securely closed by the weight of the projection member 21 without the 23 being moved, there is no need for a means for restraining the valve member in the closed state or a buffer member as in the related art. The structure is simple, maintenance is easy, and it can be manufactured at low cost. Also, a high pressure air cylinder 14 for the trigger
The starting air pressure supplied to the projection driving air chamber 33 from above to push up the projection member 21 can be small. Further, since the projection capsule 22 of the projection member 21 and the piston member 23 are separated, the flight distance of the projection capsule 22 can be extended.

[0023]

As described above, according to the first aspect of the present invention, a projection driving air chamber is formed in the base end portion of the launch cylinder, and a projection accumulator chamber is formed in the outer peripheral portion thereof. As a result, the length of the projection driving portion can be reduced, and the device can be made compact.
Further, since the projection air port formed on the side wall of the firing cylinder is closed by the closed surface portion of the outer periphery of the piston member of the projection member that slides along the side wall, it is affected by the pressure of the compressed air filled in the pressure accumulation chamber for projection. There is no need for any other restraining means except for the special case of downward firing, and the projection air port can be reliably closed by the weight of the projection member. Further, the starting air pressure by the projection starting means can be small. Therefore, there is no need for a means for restraining the piston member in the closed state or a buffer member as in the related art, so that the structure can be simply configured, maintenance is easy, and the device can be manufactured at low cost.

According to the second aspect of the invention, since the projection capsule of the projection member and the piston member are separated, the flight distance of the projection capsule can be extended.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a firing valve device, showing an embodiment of a projection device according to the present invention.

FIG. 2 is a vertical sectional view showing a firing operation of the firing valve device.

FIG. 3 is a longitudinal sectional view showing a firing operation of the firing valve device.

FIG. 4 is an overall plan view showing the projection device.

FIG. 5 is an overall side view showing the projection device.

FIG. 6 is an overall side view showing a capsule lock device of the projection device.

FIG. 7 is a longitudinal sectional view showing a firing valve device of a conventional projection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Projection mounting stand 2 Reaction damper 3 Launch cylinder 4 Launch valve device 10 Capsule lock device 11 High pressure air cylinder for pressure accumulation 13 Accumulation valve 14 High pressure air cylinder for trigger 16 Fire valve 21 Projection member 22 Projection capsule 23 Piston member 23a Closed surface 33 Projection Driving air chamber 35 Accumulation chamber for projection 36 Projected air port

Claims (2)

[Claims] 1. A projection member slidably fitted in a launch cylinder, a projection drive air chamber formed in a base end of the launch cylinder, and a projection formed on an outer periphery of a base end of the launch cylinder. A pressure accumulating chamber, a projection air port formed on the cylinder wall of the firing cylinder and communicating the projection pressure accumulating chamber and the projection driving air chamber, and a closed surface portion provided at a base end of the projection member and having an outer periphery at the time of loading. A piston member capable of closing the projection air port, and projection activation means capable of injecting activation air from the base end side of the projection drive air chamber to push out the piston member and open the projection air port. Characteristic projection device. 2. The projection device according to claim 1, wherein the projection member is constituted by a projection capsule and a piston member disposed at a base end of the projection capsule so as to be separable.