A steering gear shaft structure for a high-spin projectile precision guidance assembly

Abstract

The invention discloses a servo shaft structure of a high-spin projectile precision guidance component, and relates to the technical field of precision guidance components. Specifically, the invention provides a servo shaft structure of a high-spin projectile precision guidance component, and comprises a fairing, a first shaft section, a second shaft section, a locking nut, a third shaft section, a fourth shaft section, and a fifth shaft section. The servo shaft structure has the advantages of maximizing the use of the internal space of the precision guidance component and having a stable structure, and solves the deficiencies in the prior art and fills the gaps in the prior research field.

Description

Technical Field

[0001] The invention relates to the technical field of precision guidance components, in particular to a steering gear rotating shaft structure of a high-spin artillery shell precision guidance component. Background Art

[0002] Artillery has a long range and strong firepower, but as the distance increases, the accuracy of the shells decreases. Despite the advent of precision-guided artillery shells, their high prices make it difficult for the military to adopt them on a large scale.

[0003] Now there is a new technology called "precision-guided component". This seemingly inconspicuous kit actually turns a grenade or rocket into a precision-guided artillery shell by replacing the original grenade or rocket's fuse with it. It can transform a traditional grenade into a precision artillery shell. More importantly, its price is several times cheaper than that of a precision-guided artillery shell.

[0004] Due to the limitation of the aerodynamics of the shells, the aerodynamic shape of the shells should be changed as little as possible, that is, only the internal changes can be made. The size of the fuze in the head of the shells needs to accommodate several functional components, which shows how valuable the internal space is. On the other hand, the high speed of high-spin shells (spinning shells with a rotation speed of 24,000 rpm) generates a strong torque, which also brings considerable challenges to the research work of the precision guidance components on them. Its internal shaft structure plays a pivotal and core role in the research of the entire precision guidance components. Summary of the invention

[0005] The purpose of the present invention is to provide a servo shaft structure of a high-rotation artillery shell precision guidance component, which has the advantages of maximizing the use of the internal space of the precision guidance component and a stable structure, solves the shortcomings of the prior art and fills the gap in the existing research field.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A servo shaft structure of a high-rotation artillery shell precision guidance assembly includes a fairing, a first shaft section, a second shaft section, a locking nut, a third shaft section, a fourth shaft section, and a fifth shaft section.

[0007] The fairing is fixedly connected to the first shaft segment, the first shaft segment is fixedly connected to the second shaft segment at one end away from the fairing, the second shaft segment is fixedly connected to the third shaft segment at one end away from the first shaft segment via the locking nut, the third shaft segment is threadedly connected to the fourth shaft segment at one end away from the second shaft segment, and the fourth shaft segment is fixedly connected to the fifth shaft segment at one end away from the third shaft segment.

[0008] The fairing, the first shaft section, the second shaft section, the third shaft section, the fourth shaft section, and the fifth shaft section are all concentric hollow structures inside and are interconnected. The inside of the first shaft section forms a hollow chamber in the shape of the Chinese character "中" (middle), and empty windows are oppositely arranged on both side walls in the middle of the cavity, so as to facilitate placing objects inside the chamber. Since most of the components inside the precision guidance assembly are circuits, that is, there are many wires that need to pass through, the vertical cavity can allow the wires to pass through.

[0009] Preferably, a through hole is provided on the upper wall of the third shaft section.

[0010] Preferably, empty windows are oppositely arranged on both side walls of the third shaft section.

[0011] Preferably, an opening is left at the tip of the fairing.

[0012] Preferably, a ring-shaped flange is provided at one end of the fifth shaft section close to the fourth shaft section.

[0013] Preferably, a threaded connection nut is provided at the upper end of the first shaft section. A front cover is installed on the upper edge of the nut. Corresponding threaded holes are provided on the upper edge of the front cover and the nut, and the two are fixedly connected by screws.

[0014] Preferably, corresponding threaded holes are provided on the side edge of the front cover and the fairing. The front cover and the fairing are fixedly connected by screws through these threaded holes; at one end of the upper end of the first shaft section close to the fairing, a first boss and a second boss are provided, and the diameter of the first boss is smaller than that of the second boss.

[0015] Preferably, through holes are respectively provided on the upper wall and the lower wall of the largest empty bin in the abdomen of the first shaft section.

[0016] Preferably, a keyway is provided on the outer wall of the side wall of the second shaft section. A through hole is provided on the upper wall of the second shaft section, and a hole that does not penetrate the upper wall is also provided on the inner side of the upper wall. A third boss is also provided at the upper end of the second shaft section.

[0017] A lower nut is provided at the connection between the first shaft section and the second shaft section. The lower nut is threadedly connected to the inner wall of the lower end of the first shaft section. Threaded holes corresponding to the second shaft section are provided on the lower flange of the lower nut, and the lower nut and the second shaft section are fixedly connected by screws.

[0018] A boss is provided at the lower end of the second shaft section. The upper edge of the locking nut buckles on this boss, and the lower edge is screwed onto the third shaft section. Threaded holes are correspondingly provided on the side wall of the locking nut and the outer side of the thread of the third shaft section, and are fixed by screws; threads are also provided on the outer wall of the lower end of the third shaft section.

[0019] Preferably, the upper wall of the fifth shaft segment is an annular flange with a through hole at its axis, and the lower end of the fifth shaft segment is provided with a rear cover with two through holes on the rear cover, and the rear cover is threadedly connected to the fifth shaft segment via threads.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention increases the available space inside the precision guidance component to the maximum by arranging the fairing, the first shaft segment, the second shaft segment, the third shaft segment, the fourth shaft segment and the fifth shaft segment to be concentric hollow structures and to be interconnected. In addition, the weight of the entire shaft is reduced, thereby alleviating the pressure on the research work of other parts.

[0022] 2. The present invention reduces the strong torque effect on the precision guidance component generated by the high-spin projectile flying at high speed to a minimum by providing the above-mentioned various structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional stereogram of the present invention;

[0024] Figure 2 It is a front view of the present invention;

[0025] Figure 3 It is a left side view of the present invention;

[0026] Figure 4 It is a cross-sectional view of the present invention;

[0027] Figure 5 It is a partially enlarged schematic diagram of the first shaft section of the present invention;

[0028] Figure 6 It is a partial enlarged schematic diagram of the third shaft segment of the present invention;

[0029] Figure 7 It is a partial enlarged schematic diagram of the fifth shaft segment of the present invention;

[0030] Figure 8 A top view of the present invention;

[0031] Fig. 9 It is a bottom view of the present invention.

[0032] In the figure: 1 fairing, 2 first shaft section, 2-1 first boss, 2-2 second boss, 2-3 first window, 3 second shaft section, 3-1 keyway, 3-2 first through hole, 3-3 third boss, 3-4 hole, 4 locking nut, 5 third shaft section, 5-1 second window, 6 fourth shaft section, 7 fifth shaft section, 7-1 annular flange, 7-2 rear cover, 7-3 second through hole, 8 front cover, 9 nut, 10 threaded hole, 11 lower nut. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figure 1-9 , a steering gear rotating shaft structure of a high-spin projectile precision guidance component. A steering gear rotating shaft structure of a high-spin projectile precision guidance component includes a fairing 1, a first shaft section 2, a second shaft section 3, a locking nut 4, a third shaft section 5, a fourth shaft section 6, and a fifth shaft section 7.

[0035] The fairing 1, the first shaft section 2, the second shaft section 3, the third shaft section 5, the fourth shaft section 6, and the fifth shaft section 7 are all concentric hollow structures inside and communicate with each other. The inside of the rotating shaft is a hollow chamber structure, which greatly increases the internal space of the precision guidance component compared with the solid structure. In addition, the internal hollow chambers are concentric, which reduces the influence of the concentric force of the high-spin projectile. The internal chambers of each shaft section communicate with each other, which facilitates wiring of each part.

[0036] The fairing 1 is fixedly connected to the first shaft section 2. There is an opening at the tip of the fairing 1. Generally, sensitive devices such as geomagnetic sensors are placed inside the fairing part. Designing it as an open structure can greatly reduce the influence of the metal shell on the sensitive devices. During use, this opening can be sealed with potting glue to achieve a sealing effect.

[0037] One end of the first shaft section 2 away from the fairing 1 is fixedly connected to the second shaft section 3. The inside of the first shaft section 2 forms a hollow chamber in the shape of the Chinese character "Zhong", and first empty windows 2-3 are oppositely arranged on both side walls in the middle of the cavity. This empty window structure maximizes the operability of the inside of the cavity, and it is very convenient to place components such as electronic devices that are needed inside; a threaded connection nut 9 is provided at the upper end of the first shaft section 2, a front cover 8 is installed on the upper edge of the nut 9, and corresponding threaded holes 10 are provided on the upper edge of the front cover 8 and the nut 9, and the two are fixedly connected by screws; corresponding threaded holes are provided on the side edge of the front cover 8 and the fairing 1, and the front cover 8 and the fairing 1 are fixedly connected by screws through these threaded holes; near one end of the upper end of the first shaft section 2 close to the fairing 1, a first boss 2-1 and a second boss 2-2 are provided, and the diameter of the first boss 2-1 is smaller than that of the second boss 2-2; through holes are respectively provided on the upper and lower walls of the largest empty bin in the abdomen of the first shaft section 2.

[0038] The second shaft section 3 is fixedly connected with the third shaft section 5 at one end away from the first shaft section 2 by a locking nut 4, the outer wall of the side wall of the second shaft section 3 is provided with a keyway 3-1, and the upper wall of the second shaft section 3 is provided with a first through hole 3-2. When in use, the groove formed between the connection between the first shaft section 2 and the second shaft section 3 is usually used to install the motor of the driving precision guidance component. The first through hole 3-2 provided here can be reserved for the use of external motor components to route to the inside of the rotating shaft, and the keyway 3-1 can be used as the motor structure required for clamping, and a hole 3-4 that does not penetrate the upper wall is also provided on the inner side of its upper wall, and a third boss 3-3 is also provided at the upper end of the second shaft section 3; a boss is provided at the lower end of the second shaft section 3, and the upper edge of the locking nut 4 buckles this boss, and the lower edge is screwed on the third shaft section 5 by threading, and threaded holes are provided on the side wall of the locking nut 4 and the outer side of the thread of the third shaft section 5 correspondingly, and are fixed by screws. Using screws to fix on the basis of using threaded connection can effectively prevent loosening between components during the rotation of high-rotation projectiles.

[0039] A lower nut 11 is provided at the connection between the first shaft section 2 and the second shaft section 3. The lower nut 11 is threadedly connected to the inner wall of the lower end of the first shaft section 2. A threaded hole corresponding to the second shaft section 3 is provided on the lower end flange of the lower nut 11. The lower nut 11 is fixedly connected to the second shaft section 3 by screws.

[0040] The third shaft segment 5 is threadedly connected to the fourth shaft segment 6 at one end away from the second shaft segment 3. The outer wall of the lower end of the third shaft segment 5 is provided with a thread. When in use, the thread is used to be threadedly connected to the rear body of the high-spin shell. The part below the thread is placed inside the rear body. The upper wall of the third shaft segment 5 is provided with a first through hole 3-2; second windows 5-1 are relatively provided on the two side walls of the third shaft segment 5.

[0041] One end of the fourth shaft segment 6 away from the third shaft segment 5 is fixedly connected to the fifth shaft segment 7 .

[0042] The fifth shaft segment 7 is provided with an annular flange at one end close to the fourth shaft segment 6. The upper wall of the fifth shaft segment 7 is an annular flange 7-1 with a through hole at the axis thereof, and the lower end of the fifth shaft segment 7 is provided with a rear cover 7-2, on which there are two second through holes 7-3, and the rear cover 7-2 is threadedly connected to the fifth shaft segment 7 by threads, and the through holes here can be reserved for the outlet of the wire after the precision guidance component is potted.

[0043] When in use, other circuits required by the precision guidance component are encapsulated inside the present invention, and a motor is installed to form a complete precision guidance component. The precision guidance component is then installed on the rear body of the high-spin guided projectile, and the staff can then carry out relevant testing work.

[0044] In summary: the servo shaft structure of the high-spin artillery projectile precision guidance component solves the problem of tight available space inside the precision guidance component by arranging a fairing 1, a first shaft section 2, a second shaft section 3, a locking nut 4, a third shaft section 5, a fourth shaft section 6, and a fifth shaft section 7. In addition, the entire weight of the shaft is reduced, reducing the pressure on the research work of other parts.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steering gear shaft structure for a high-speed artillery projectile precision guidance assembly, comprising a fairing (1), a first shaft section (2), a second shaft section (3), a locking nut (4), a third shaft section (5), a fourth shaft section (6), and a fifth shaft section (7), characterized in that: The fairing (1) is fixedly connected to the first shaft segment (2), one end of the first shaft segment (2) away from the fairing (1) is fixedly connected to the second shaft segment (3), one end of the second shaft segment (3) away from the first shaft segment (2) is fixedly connected to the third shaft segment (5) through the lock nut (4), one end of the third shaft segment (5) away from the second shaft segment (3) is threadedly connected to the fourth shaft segment (6), and one end of the fourth shaft segment (6) away from the third shaft segment (5) is fixedly connected to the fifth shaft segment (7); The interiors of the fairing (1), the first shaft segment (2), the second shaft segment (3), the third shaft segment (5), the fourth shaft segment (6), and the fifth shaft segment (7) are all concentric hollow structures and are interconnected. The hollow chamber formed inside the first shaft segment (2) is in the shape of the Chinese character "中", and first empty windows (2-3) are oppositely arranged on both side walls in the middle of the hollow chamber; second empty windows (5-1) are oppositely arranged on both side walls of the third shaft segment (5); an opening is left at the tip of the fairing (1); a ring flange is provided at one end of the fifth shaft segment (7) close to the fourth shaft segment (6); Threads for connecting the nut (9) are provided at the upper end of the first shaft segment (2). The front cover (8) is installed on the upper edge of the nut (9). Corresponding threaded holes (10) are provided on the upper edge of the front cover (8) and the nut (9), and the two are fixedly connected by screws; Corresponding threaded holes are provided on the side edge of the front cover (8) and the fairing (1), and the front cover (8) and the fairing (1) are fixedly connected by screws through these threaded holes. A first boss (2-1) and a second boss (2-2) are provided at one end of the upper end of the first shaft segment (2) close to the fairing (1), and the diameter of the first boss (2-1) is smaller than that of the second boss (2-2); Through holes are respectively provided on the upper and lower walls of the largest empty bin in the abdomen of the first shaft segment (2); A ring flange (7-1) with a through hole provided at the axis is provided on the upper wall of the fifth shaft segment (7). A rear cover (7-2) is provided at the lower end of the fifth shaft segment (7). There are two second through holes (7-3) on the rear cover (7-2), and the rear cover (7-2) is threadedly connected to the fifth shaft segment (7) by threads.

2. The servo shaft structure of a high-spin projectile precision guidance assembly according to claim 1, characterized in that: A keyway (3-1) is provided on the outer wall of the side wall of the second shaft segment (3). A first through hole (3-2) is provided on the upper wall of the second shaft segment (3). A hole (3-4) that does not penetrate the upper wall is also provided on the inner side of the upper wall. A third boss (3-3) is also provided at the upper end of the second shaft segment (3); A lower nut (11) is provided at the connection between the first shaft segment (2) and the second shaft segment (3). The lower nut (11) is threadedly connected to the inner wall of the lower end of the first shaft segment (2). Threaded holes corresponding to the second shaft segment (3) are provided on the lower flange of the lower nut (11), and the lower nut (11) and the second shaft segment (3) are fixedly connected by screws; The lower end of the second shaft section (3) is provided with a boss, the upper edge of the locking nut (4) is buckled on the boss, and the lower edge is screwed onto the third shaft section (5) through a thread, and the side wall of the locking nut (4) is provided with threaded holes corresponding to the outer side of the thread of the third shaft section (5), and is fixed by screws; the outer wall of the lower end of the third shaft section (5) is also provided with a thread.

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