JP2008232581A - Accelerating tube for electromagnetic accelerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accelerating tube for an electromagnetic accelerator easy to assemble/disassemble and capable of maintaining firm integrity regardless of an energized time or a non-energized time. <P>SOLUTION: When a screw 5 is loosened, clearances are formed between a left rail 1L, an upper spacer 2T, a right rail 1R, a lower spacer 2B, a left spacer 3L, a left steel plate 4L, a right spacer 2R and a right steel plate 4R. When the screw 5 is tightened, the clearances between the respective parts disappear. Since the clearances are formed between the respective parts by loosening the screw 5, assembly/disassembly is facilitated. The screw 5 is tightened to eliminate the clearances between the respective parts to attain firm integration regardless of energization/non-energization to the rails 1L, 1R. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an acceleration tube for an electromagnetic acceleration device, and more particularly to an acceleration tube for an electromagnetic acceleration device that can be easily assembled / disassembled and can maintain strong integrity regardless of whether it is energized or not energized.

In an electromagnetic acceleration device that accelerates and launches the armature with electromagnetic force by energizing the armature between a pair of rails, the rail is generally fixed using many bolts, but when many bolts are used Assembling / disassembling takes time.
In view of this, a self-shrinkable wedge-fixed rail gun has been proposed that utilizes the fact that a pair of rails generate strong repulsive forces when energized, and that can fix the rail without using many bolts (for example, patents) Reference 1).
Japanese Patent Laid-Open No. 10-206090

The self-shrinkable wedge-fixed rail gun has an advantage that it is easy to assemble / disassemble because it does not require many bolts.
However, when no power is supplied, there is no strong repulsive force between the pair of rails. Therefore, the rails are loosened in the direction of decreasing the distance, and the integrity of each part is also loosened. There is.) That is, there is a problem that each part moves by the amount of clearance between energization and non-energization, and each part is damaged by the impact force.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object thereof is to provide an acceleration tube for an electromagnetic accelerator that can be easily assembled / disassembled and can maintain strong integrity regardless of energization / non-energization. Yes.

In a first aspect, the present invention relates to a left rail and a right rail that are inclined surfaces that face each other in the left-right direction across a space through which an armature passes and that have an upper edge portion and a lower edge portion that are open to the outside. A frame surrounding the left rail and the right rail, a left spacer interposed between the rear surface of the left rail and the inner surface of the frame, and between the rear surface of the right rail and the inner surface of the frame body An intervening right spacer; and an inclined surface adapted to an inclined surface of a lower edge portion of the left rail and the right rail; and between an inclined surface of the lower edge portion of the left rail and the right rail and an inner surface of the frame body A lower spacer that exists, an inclined surface that conforms to an inclined surface of the upper edge of the left rail and the right rail, and between the inclined surface of the upper edge of the left rail and the right rail and the inner surface of the frame An upper spacer, and a small number of the upper spacer and the lower spacer. A pressing mechanism that presses at least one inclined surface against the corresponding inclined surface of the rail, and at least one of the inclined surfaces of the upper spacer and the lower spacer is pressed against the corresponding inclined surface of the rail by the pressing mechanism. When the left rail, the right rail, the frame, the left spacer, the right spacer, the lower spacer, and the upper spacer are integrated and do not press, the left rail, the right rail, the frame An acceleration tube for an electromagnetic accelerator is provided, wherein a gap may be formed between the left spacer, the right spacer, the lower spacer, and the upper spacer.
In the acceleration tube for an electromagnetic accelerator according to the first aspect, when the pressing mechanism does not press at least one inclined surface of the upper spacer and the lower spacer against the inclined surface of the corresponding rail, the left rail, the right rail, the frame, There may be a gap between the left spacer, the right spacer, the lower spacer, and the upper spacer. And since many bolts are not used, it becomes easy to assemble / disassemble. After assembly, when the pressing mechanism presses at least one inclined surface of the upper spacer and the lower spacer against the inclined surface of the corresponding rail, the left rail, the right rail, the frame, the left spacer, the right spacer, the lower spacer, The upper spacer is integrated. In other words, since the force that strongly repels the pair of rails during energization is not used, it is possible to maintain a strong integrity of the components regardless of energization / non-energization.
In the above configuration, left and right and up and down are merely relative expressions, and even if rotated, for example, rotated 90 ° and switched left and right and up and down are included in the scope of the present invention.

In a second aspect, the present invention relates to the acceleration tube for an electromagnetic accelerator according to the first aspect, wherein the frame body is a rectangular tube structure in which four plates on the left, right, and upper sides are combined in a joint shape. There is provided an acceleration tube for an electromagnetic accelerator characterized by being provided.
In the acceleration tube for an electromagnetic accelerator according to the second aspect described above, when the inclined surface of at least one of the upper spacer and the lower spacer is pressed against the corresponding inclined surface of the rail by the pressing mechanism, the four plates are firmly integrated. And a strong frame is formed. When not pressed, the frame can be easily disassembled into four plates.

In a third aspect, the present invention provides the acceleration tube for an electromagnetic accelerator according to the first aspect, wherein the frame is a seamless cylindrical body. To do.
In the acceleration tube for an electromagnetic accelerator according to the third aspect, since the frame body is a seamless cylindrical body, the performance of the mechanical strength with respect to the thickness can be improved.

In a fourth aspect, the present invention provides the electromagnetic accelerator acceleration tube according to any one of the first to third aspects, wherein the pressing mechanism is a screw that penetrates the frame. An acceleration tube for an accelerator is provided.
In the acceleration tube for an electromagnetic accelerator according to the fourth aspect, the components can be firmly integrated by tightening a screw. It can also be disassembled by loosening the screws. The number of screws may be smaller than that of conventional bolts.

In a fifth aspect, the present invention provides the acceleration tube for an electromagnetic accelerator according to any one of the first to third aspects, wherein the pressing mechanism includes at least one of the frame body, the upper spacer, and the lower spacer. An acceleration tube for an electromagnetic accelerator characterized by being a hydraulic device provided therebetween.
In the acceleration tube for an electromagnetic accelerator according to the fifth aspect, the components can be firmly integrated by increasing the hydraulic pressure. Moreover, it can be disassembled by reducing the hydraulic pressure. Since the hydraulic device is housed inside the frame, it is not necessary to make a protrusion to the outside of the frame. Further, by controlling the hydraulic pressure, the integrity of the acceleration tube can be stably maintained.

  According to the acceleration tube for an electromagnetic accelerator of the present invention, there is an advantage that it is easy to assemble / disassemble since it is not necessary to use many bolts. In addition, since the pair of rails do not use a force that strongly repels when energized, it is possible to maintain a strong integrity of the components regardless of energization / non-energization.

  Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.

1 and 2 are cross-sectional views illustrating an acceleration tube 10 for an electromagnetic accelerator according to a first embodiment.
In this acceleration tube 10 for an electromagnetic accelerator, 1L is a left rail and 1R is a right rail. The left rail 1L and the right rail 1R face each other in the left-right direction with a space through which an armature (not shown) passes. The lower edge portion of the opposing surface of the left rail 1L is an inclined surface 1Lb that opens outward. The upper edge of the facing surface of the left rail 1L is an inclined surface 1Lt that opens outward. The lower edge portion of the facing surface of the right rail 1R is an inclined surface 1Rb that opens outward. Further, the upper edge portion of the facing surface of the right rail 1R is an inclined surface 1Rt that opens outward.

  The frame 4 surrounding the left rail 1L and the right rail 1R is a rectangular tubular structure in which the left steel plate 4L and the right steel plate 4R, the lower steel plate 4B, and the upper steel plate 4T are combined in a dovetail shape.

The left spacer 3L interposed between the back surface of the left rail 1L and the inner surface of the left steel plate 4L is an insulator that electrically insulates the left rail 1L and the left steel plate 4L.
The right spacer 3R interposed between the back surface of the right rail 1R and the inner surface of the right steel plate 4R is an insulator that electrically insulates the right rail 1R and the right steel plate 4R.

The lower spacer 2B interposed between the inclined surface 1Lb of the lower edge of the left rail 1L and the inclined surface 1Rb of the lower edge of the right rail 1R and the inner surface of the lower steel plate 4B is an inclined surface 1Lb of the lower edge of the left rail 1L. And an inclined surface 2Br adapted to the inclined surface 1Rb at the lower edge of the right rail 1R.
The lower spacer 2B is an insulator that electrically insulates the left rail 1L and the right rail 1R from the lower steel plate 4B.

The upper spacer 2T existing between the inclined surface 1Lt of the upper edge of the left rail 1L and the inclined surface 1Rt of the upper edge of the right rail 1R and the inner surface of the upper steel plate 4T is an inclined surface 1Lt of the upper edge of the left rail 1L. And an inclined surface 2Tr adapted to the inclined surface 1Rt at the upper edge of the right rail 1R.
The upper spacer 2T is an insulator that electrically insulates the left rail 1L and the right rail 1R from the upper steel plate 4T.

  The screw 5 penetrating the upper steel plate 4T is a pressing mechanism and can press down the upper spacer 2T. The screws 5 are provided at predetermined intervals in the direction in which the rails 1L and 1R extend.

  As shown in FIG. 1, when the screw 5 is loosened and the upper spacer 2T is not pushed down by the screw 5, the upper rail 2L between the inclined surface 1Lt of the upper edge and the inclined surface 2Tl of the upper spacer 2T and the right rail 1R A clearance may be generated between the inclined surface 1Rt of the upper edge portion and the inclined surface 2Tr of the upper spacer 2T. If these clearances occur, the inclined surface 1Lb of the lower edge of the left rail 1L and the inclined surface 2B1 of the lower spacer 2B, the inclined surface 1Rb of the lower edge of the right rail 1R, and the inclined surface of the lower spacer 2B 2Br, between the back surface of the left rail 1L and the inner surface of the left spacer 3L, between the left spacer 3L and the inner surface of the left steel plate 4L, between the back surface of the right rail 1R and the inner surface of the right spacer 2R, and between the right spacer 3R and the right steel plate. A clearance may be generated between the inner surfaces of 4R. Furthermore, the force which fixes the dovetail shape of the left steel plate 4L and the right steel plate 4R, the lower steel plate 4B and the upper steel plate 4T does not work. Therefore, assembly / disassembly is facilitated.

As shown in FIG. 2, when the screw 5 is tightened and the upper spacer 2T is pushed down by the screw 5, the inclined surface 2Tl of the upper spacer 2T presses the inclined surface 1Lt of the upper edge of the left rail 1L, A force that pushes the rail 1L downward and a force that pushes it to the left are generated. When the left rail 1L is pushed down, the inclined surface 1Lb of the lower edge portion of the left rail 1L presses the inclined surface 2Bl of the lower spacer 2B, so that a force pushing the lower spacer 2B downward and a force pushing right are generated.
Similarly, since the inclined surface 2Tr of the upper spacer 2T presses the inclined surface 1Rt of the upper edge portion of the right rail 1R, a force that pushes the right rail 1R downward and a force that pushes the right rail 1R are generated. When the right rail 1R is pushed down, the inclined surface 1Rb of the lower edge portion of the right rail 1R presses the inclined surface 2Br of the lower spacer 2B, so that a force that pushes the lower spacer 2B downward and a force that pushes left are generated.

The force for pushing the lower spacer 2B downward presses the lower spacer 2B against the lower steel plate 4B.
Since the force that pushes the lower spacer 2B to the left and the force that pushes to the right antagonize, as a reaction, a force that pushes the left rail 1L to the left and a force that pushes the right rail 1R to the right are generated.

The force pushing the left rail 1L to the left generates a force pushing the left rail 1L against the left spacer 3L, pushing the left spacer 3L against the left steel plate 4L, and pushing the left steel plate 4L left.
The force that pushes the right rail 1R to the right generates a force that pushes the right rail 1R against the right spacer 3R, pushes the right spacer 3R against the right steel plate 4R, and pushes the right steel plate 4R right.

  As a reaction of the force of tightening the screw 5, the upper steel plate 4T is pushed up and the lower steel plate 4B is pushed down, the left steel plate 4L is pushed left, and the right steel plate 4R is pushed right. 4L, the right steel plate 4R, the lower steel plate 4B, and the upper steel plate 4T have a force to fix the dovetail shape. Thus, the left rail 1L, the right rail 1R, the frame 4, the left spacer 3L, the right spacer 3R, the lower spacer 2B, and the upper spacer 2T are integrated.

According to the acceleration tube 10 for an electromagnetic accelerator of the first embodiment, the following effects can be obtained.
(1) Since the clearance between the parts can be generated by loosening the screw 5, it is easy to assemble / disassemble.
(2) The frame 4 can also be disassembled into four plates 4L, 4R, 4B, 4T.
(3) By tightening the screw 5, it is possible to eliminate the clearance between the components and firmly integrate them regardless of whether the rails 1 </ b> L and 1 </ b> R are energized or not.

3 and 4 are cross-sectional views illustrating the acceleration tube 20 for an electromagnetic accelerator according to the second embodiment.
This acceleration tube 20 for electromagnetic accelerators is the same as the acceleration tube 10 for electromagnetic accelerators of Example 1 except that the frame 4 is a seamless cylindrical steel pipe and the hydraulic cylinder 6 is used as a pressing mechanism. It is the same composition.

  As shown in FIG. 3, when the hydraulic pressure of the hydraulic cylinder 6 is lowered and the upper spacer 2T is not pushed down by the hydraulic cylinder 6, the interval between the inclined surface 1Lt of the upper edge of the left rail 1L and the inclined surface 2Tl of the upper spacer 2T In addition, a clearance may be generated between the inclined surface 1Rt at the upper edge of the right rail 1R and the inclined surface 2Tr of the upper spacer 2T. If these clearances occur, the inclined surface 1Lb of the lower edge of the left rail 1L and the inclined surface 2B1 of the lower spacer 2B, the inclined surface 1Rb of the lower edge of the right rail 1R, and the inclined surface of the lower spacer 2B 2Br, between the rear surface of the left rail 1L and the inner surface of the left spacer 3L, between the left spacer 3L and the inner surface of the frame 4, between the rear surface of the right rail 1R and the inner surface of the right spacer 2R, and between the right spacer 3R and the frame A clearance may occur between the inner surfaces of the four. Therefore, assembly / disassembly is facilitated.

As shown in FIG. 4, when the hydraulic pressure of the hydraulic cylinder 6 is increased and the upper spacer 2T is pushed down by the hydraulic cylinder 6, the inclined surface 2Tl of the upper spacer 2T presses the inclined surface 1Lt at the upper edge of the left rail 1L. Therefore, a force for pushing the left rail 1L downward and a force for pushing to the left are generated. When the left rail 1L is pushed down, the inclined surface 1Lb of the lower edge portion of the left rail 1L presses the inclined surface 2Bl of the lower spacer 2B, so that a force pushing the lower spacer 2B downward and a force pushing right are generated.
Similarly, since the inclined surface 2Tr of the upper spacer 2T presses the inclined surface 1Rt of the upper edge portion of the right rail 1R, a force that pushes the right rail 1R downward and a force that pushes the right rail 1R are generated. When the right rail 1R is pushed down, the inclined surface 1Rb of the lower edge portion of the right rail 1R presses the inclined surface 2Br of the lower spacer 2B, so that a force that pushes the lower spacer 2B downward and a force that pushes left are generated.

The force that pushes the lower spacer 2B downward presses the lower spacer 2B against the inner surface of the frame body 4.
Since the force that pushes the lower spacer 2B to the left and the force that pushes to the right antagonize, as a reaction, a force that pushes the left rail 1L to the left and a force that pushes the right rail 1R to the right are generated.

The force that pushes the left rail 1L to the left pushes the left rail 1L against the left spacer 3L and pushes the left spacer 3L against the inner surface of the frame body 4.
The force pushing the right rail 1R to the right pushes the right rail 1R against the right spacer 3R and pushes the right spacer 3R against the inner surface of the frame 4.

  Thus, the left rail 1L, the right rail 1R, the frame 4, the left spacer 3L, the right spacer 3R, the lower spacer 2B, and the upper spacer 2T are integrated.

According to the acceleration tube 20 for the electromagnetic accelerator of the second embodiment, the following effects can be obtained.
(1) By reducing the hydraulic pressure of the hydraulic cylinder 6, a clearance can be generated between the components, which facilitates assembly / disassembly.
(2) Since the frame body 4 is a cylinder, the force that works to push the frame body 4 from the inside is dispersed throughout and does not concentrate on a part like a square tube. For this reason, the performance of the mechanical strength with respect to the thickness can be improved.
(3) By increasing the hydraulic pressure of the hydraulic cylinder 6, it is possible to firmly integrate the components without any clearance between the components regardless of whether the rails 1L and 1R are energized or not.
(4) If the hydraulic pressure of the hydraulic cylinder 6 is monitored and controlled, the integrity of the acceleration pipe can be stably maintained.

  Instead of the screw 5 and the hydraulic cylinder 6, or in addition to the screw 5 and the hydraulic cylinder 6, a screw or a hydraulic cylinder that can push up the lower spacer 2B may be provided.

  The acceleration tube for an electromagnetic accelerator of the present invention can be used for an electromagnetic accelerator.

It is sectional drawing which shows the acceleration pipe | tube (an assembly / disassembly state) for electromagnetic accelerators concerning Example 1. FIG. It is sectional drawing which shows the acceleration tube for electromagnetic accelerators (integrated state) which concerns on Example 1. FIG. It is sectional drawing which shows the acceleration pipe | tube (an assembly / disassembly state) for electromagnetic accelerators concerning Example 2. FIG. It is sectional drawing which shows the acceleration tube for electromagnetic acceleration devices (integrated state) which concerns on Example 2. FIG.

Explanation of symbols

1L Left rail 1R Right rail 2B Lower spacer 2T Upper spacer 3L Left spacer 3R Right spacer 4 Frame 4L Left steel plate 4R Right steel plate 4B Lower steel plate 4T Upper steel plate 5 Screw 6 Hydraulic cylinder 10, 20 Acceleration tube for electromagnetic accelerator

Claims (5)

Left and right rails that face the left and right sides across the space through which the armature passes and that have inclined surfaces with the upper and lower edges of the opposing surfaces opened outward, and around the left and right rails A frame surrounding the left rail, a left spacer interposed between the rear surface of the left rail and the inner surface of the frame body, a right spacer interposed between the rear surface of the right rail and the inner surface of the frame body, the left rail and A lower spacer having an inclined surface matching an inclined surface of a lower edge portion of the right rail and existing between an inclined surface of the lower edge portion of the left rail and the right rail and an inner surface of the frame; the left rail; An upper spacer having an inclined surface adapted to an inclined surface of an upper edge portion of the right rail and existing between an inclined surface of the upper edge portion of the left rail and the right rail and an inner surface of the frame; the upper spacer; The rail corresponding to at least one inclined surface of the lower spacer A pressing mechanism that presses against the inclined surface, and when the pressing mechanism presses at least one inclined surface of the upper spacer and the lower spacer against the corresponding inclined surface of the rail, the left rail, the right rail, When the frame, the left spacer, the right spacer, the lower spacer, and the upper spacer are integrated and do not press, the left rail, the right rail, the frame, the left spacer, the right spacer, the lower spacer And an acceleration tube for an electromagnetic accelerator, wherein a gap may be formed between the upper spacers. 2. The acceleration tube for an electromagnetic acceleration device according to claim 1, wherein the frame body is a rectangular tubular structure in which four plates on the left, right, and upper sides are combined in a joint shape. Accelerating tube. 2. The acceleration tube for an electromagnetic accelerator according to claim 1, wherein the frame is a seamless cylindrical body. The acceleration tube for an electromagnetic accelerator according to any one of claims 1 to 3, wherein the pressing mechanism is a screw that penetrates the frame. The acceleration pipe for an electromagnetic acceleration device according to any one of claims 1 to 3, wherein the pressing mechanism is a hydraulic device provided between at least one of the frame and the upper spacer and the lower spacer. Accelerator tube for electromagnetic accelerator characterized by.

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