Combined elastic element for folding rudders

Abstract

The application discloses a combined elastic element for a folding rudder, which comprises a main torque element, a first joint and a second joint arranged at two ends of the main torque element, and a torsion spring arranged on the first joint; the main torque element is a torsion sheet group or a torsion rod. The combined elastic element has simple structure and low cost, is embedded in a folding rudder surface, does not affect the aerodynamic shape, and can realize the following functions: the folding rudder does not rely on changing the external structure, the initial torque is greatly improved, and the initial kinetic energy is increased.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rudder design and manufacturing, and particularly relates to a combined elastic element for a folding rudder. BACKGROUND

[0002] In order to reduce the storage and transportation of space vehicles, save the storage and transportation space of launching devices, and increase the carrying capacity of vehicles, warships and aircraft, folding rudders are widely used in the structure of space vehicle bodies.

[0003] At present, the driving modes of the folding rudder unfolding mechanism mainly include spring type, fire control type, hydraulic type, motor type, shape memory alloy type, etc. Considering reliability and processability and other factors, the cylindrical torsion member in the spring type is most widely used.

[0004] In actual design and use, the cylindrical torsion member is restricted by two factors, i.e. rotation angle and unfolding time. The main limiting conditions are: 1) the greater the demand for unfolding angle is, the smaller the diameter of the cylindrical torsion member is; 2) the smaller the demand for unfolding time is, the greater the kinetic energy provided by the cylindrical torsion member is, and then the greater the diameter of the cylindrical member is. In order to meet the two conditions at the same time, the size of the diameter of the cylindrical torsion member is determined. However, in some specific engineering applications, the size of the space structure of the folding rudder cannot be changed, but it is required that the unfolding mechanism of the folding rudder obtains a relatively high initial kinetic energy or initial torque. Therefore, the use of the cylindrical torsion member in the folding rudder unfolding mechanism is limited. SUMMARY

[0005] In order to solve the above problems, the present application aims to provide a combined elastic element for a folding rudder, so as to solve the problem of improving the initial torque of the rotating rudder surface in the folding rudder under certain space conditions.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A combined elastic element for a folding rudder, comprising a main torque member, a first joint and a second joint arranged at both ends of the main torque member, and a torsional spring arranged on the first joint.

[0008] The main torque member is a torsion sheet group or a torsion rod.

[0009] Preferably, at least one groove is arranged on each of the first joint and the second joint, and the main torque member and the torsional spring are respectively arranged in the grooves.

[0010] Preferably, the torsional spring is connected with the groove on one side of the first joint through a boss; the boss comprises a first convex body connected perpendicularly with the groove, and a second convex body arranged on the first convex body, the diameter of the first convex body is greater than the diameter of the second convex body; and the torsional spring is arranged on the first convex body.

[0011] Preferably, the groove corresponding to the boss is provided with an opening of 120 degrees.

[0012] Preferably, the first joint and the second joint are integrally provided in a cubic shape.

[0013] Preferably, the two ends of the torsion piece group are fixed in the grooves of the first joint and the second joint respectively through locking pins.

[0014] Preferably, the torsion piece group comprises large torsion pieces and small torsion pieces which are connected as a whole; the large torsion pieces and the small torsion pieces are provided in a strip shape, and the width of the large torsion pieces is greater than the width of the small torsion pieces.

[0015] Preferably, the large torsion pieces and the small torsion pieces are each provided as two pieces, and the large torsion pieces are arranged between the small torsion pieces.

[0016] Preferably, the middle part of the torsion rod is provided in a cylindrical shape, and the inner diameters of the two ends gradually increase and are adapted to the end faces of the first joint and the second joint.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The combined elastic element for the folding rudder in the present application has simple structure and low cost, is embedded in the folding rudder surface, does not affect the aerodynamic shape, can realize the folding rudder without relying on changing the external structure, greatly improves the initial torque, and increases the initial kinetic energy. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 FIG. 1 is a structural schematic diagram of a combined elastic element for a folding rudder in the embodiment one of the present application;

[0021] Figure 2 FIG. 2 is an assembly schematic diagram of a torsion piece group and a first joint in the embodiment one of the present application;

[0022] Figure 3 FIG. 3 is a structural schematic diagram of the first joint in the embodiment one of the present application;

[0023] Figure 4 FIG. 4 is a rear view structural schematic diagram of the embodiment one of the present application; Figure 3

[0024] ​Figure 5 This is a schematic diagram of a combined elastic element for a folding rudder in Embodiment 2 of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the first connector in Embodiment 2 of the present invention;

[0026] Reference numerals: 1-First connector, 2-Second connector, 3-Torsion spring, 4-Torsion plate group, 41-Large torsion plate, 42-Small torsion plate, 5-Torsion bar, 6-Boss, 61-First protrusion, 62-Second protrusion, 7-Locking pin, 8-First groove, 9-Third groove, 10-Fourth groove. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0028] Reference Figures 1 to 6 This invention discloses a combined elastic element for a folding rudder, comprising a main torque component, a first connector 1 and a second connector 2 located at both ends of the main torque component, and a torsion spring 3 located on the first connector 1; the main torque component is a torsion plate assembly 4 or a torsion bar 5. At least one groove is provided on each of the first connector 1 and the second connector 2, and the main torque component and the torsion spring 3 are respectively installed in the grooves. This elastic element, without increasing the spatial structure of the folding rudder, is embedded within the folding rudder surface, enabling the folding rudder to significantly increase its initial torque and thus increase its initial kinetic energy without altering its external shape.

[0029] Example 1

[0030] Reference Figures 1 to 4 In this embodiment, a combined elastic element for a folding rudder is installed in the folding rudder to provide torque, including a main torque component, which is a torsion plate group 4.

[0031] The twisted plate assembly 4 includes a large twisted plate 41 and a small twisted plate 42 connected as a single unit; the large twisted plate 41 and the small twisted plate 42 are elongated strips. The large twisted plate 41 and the small twisted plate 42 have the same length, and the width of the large twisted plate 41 is greater than the width of the small twisted plate 42. As a preferred embodiment, each of the large twisted plate 41 and the small twisted plate 42 is provided in pairs, with the two large twisted plates 41 positioned between the two small twisted plates 42. The twisted plate assembly 4 is configured to provide the main torque.

[0032] The first joint 1 and the second joint 2 are integrally arranged in a cubic shape, which facilitates the installation and fixation on the folding rudder.

[0033] A groove for installing the torsion piece group 4 is formed on the end face of the first joint 1 opposite to the second joint 2, and is called a first groove 8 on the first joint 1 and a second groove on the second joint 2 for the convenience of distinction. The two ends of the torsion piece group 4 are installed in the first groove 8 and the second groove respectively, and are fixed in the first groove 8 and the second groove respectively through locking pins 7.

[0034] A third groove 9 is further arranged on the first joint 1, which is arranged opposite to the first groove 8, that is, the first groove 8 and the third groove 9 are located on the opposite two faces of the first joint 1. A boss 6 is vertically connected to the middle part of the third groove 9, which includes a first convex body 61 vertically connected to the third groove 9, and a second convex body 62 arranged on the first convex body 61. The diameter of the first convex body 61 is greater than that of the second convex body 62. The first convex body 61 is used for installing a torsion spring 3, and the second convex body 62 is axially matched with a rotating rudder surface, which is used for positioning the combined elastic element and axially fixing the torsion spring 3. An opening of 120 degrees is arranged on the lateral side of the third groove 9 for the convenience of installation of the torsion spring 3. The torsion spring 3 is arranged to provide auxiliary torque.

[0035] As a preferred scheme of the embodiment, a connecting boss is further arranged on the second joint 2, which is used in cooperation with other structures, and is arranged on the end of the second joint 2 away from the torsion piece group 4.

[0036] After the first joint 1 and the torsion spring 3 are assembled, the rotating rudder surface is installed in the folding rudder. The second joint 2 is installed in the fixed rudder surface in the folding rudder.

[0037] In the initial state, the rotating rudder surface drives the torsion piece group 4 and the torsion spring 3 to rotate together through external force, and when the rudder surface rotates to a specified angle, an external limiting block is used to keep the initial state, at which time the torsion piece group 4 and the torsion spring 3 store energy. When the rudder surface needs to be unfolded, the external limiting block is removed, at which time the torsion piece group 4 and the torsion spring 3 release energy, the rudder surface rotates around the rotating shaft under the action of the torque of the torsion piece group 4 and the torsion spring 3, and completes the unfolding action and is locked within a specified time.

[0038] The combined elastic element in the embodiment has simple structure and low cost, is embedded in the folding rudder surface, does not affect the aerodynamic shape, and can realize the folding rudder without relying on changing the external structure to greatly improve the initial torque.

[0039] Embodiment Two

[0040] With reference to Figure 5 With Figure 6 In this embodiment, the combined elastic element for folding rudder is used for providing torque in the folding rudder, which comprises a main torque element, i.e. a torsion bar 5.

[0041] The middle part of the torsion bar 5 is cylindrically arranged, and the inner diameter of the two ends gradually increases and is adapted to the end face of the first joint 1 and the second joint 2, i.e. the area of the end face of the two ends of the torsion bar 5 is close to the area of the end face of the first end head or the second end head connected thereto.

[0042] The first joint 1 and the second joint 2 are integrally arranged in the form of a cube, which is convenient for mounting and fixing on the folding rudder. In this embodiment, the torsion bar 5, the first joint 1 and the second joint 2 are integrally formed.

[0043] A fourth groove 10 is further arranged on the first joint 1, and the fourth groove 10 is arranged at one end of the first joint 1 away from the torsion bar 5.

[0044] The middle part of the fourth groove 10 is vertically connected with a boss 6, and the boss 6 comprises a first protrusion 61 vertically connected with the fourth groove 10, and a second protrusion 62 arranged on the first protrusion 61. The diameter of the first protrusion 61 is greater than the diameter of the second protrusion 62. The first protrusion 61 is used for mounting a torsion spring 3, and the second protrusion 62 is axially matched with a rotating rudder surface and is used for positioning the combined elastic element and axially fixing the torsion spring 3. In order to facilitate the mounting of the torsion spring 3, an opening of 120 degrees is arranged on the side of the fourth groove 10. The torsion spring 3 is arranged for providing auxiliary torque.

[0045] After the first joint 1 and the torsion spring 3 are assembled, the rotating rudder surface is mounted in the folding rudder, and the second joint 2 is mounted in the fixed rudder surface in the folding rudder.

[0046] In the initial state, the rotating rudder surface drives the torsion bar 5 and the torsion spring 3 to rotate together through external force, and when the rudder surface rotates to a specified angle, the initial state is maintained by an external limiting block, at which time the torsion bar 5 and the torsion spring 3 store energy. When the rudder surface needs to be unfolded, the external limiting block is removed, at which time the torsion bar 5 and the torsion spring 3 release energy, the rudder surface rotates around the rotating shaft under the action of the torque of the torsion bar 5 and the torsion spring 3, and completes the unfolding action and is locked within a specified time.

[0047] The combined elastic element in this embodiment has the advantages of simple structure and low cost, and can realize the increase of initial kinetic energy of the folding rudder without relying on the change of the external shape structure.

[0048] The above has carried out the detailed introduction to the combined elastic element for the folding rudder provided by the application, the structure and working principle of the application are described by applying specific examples in the text, the above embodiment description is only used for helping understanding the method and core idea of the application. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the application, the application can be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the application.

Claims

1. A combined elastic element for folding a rudder, characterized in that: The main torque piece, the first joint (1) and the second joint (2) arranged at both ends of the main torque piece, and the torsion spring (3) arranged on the first joint (1); The main torque piece is a torsion piece group (4) or a torsion bar (5); The first joint (1) and the second joint (2) are respectively provided with at least one groove, and the main torque piece or the torsion spring (3) is respectively arranged in the groove; The torsion piece group (4) comprises a large torsion piece (41) and a small torsion piece (42) connected as a whole; the large torsion piece (41) and the small torsion piece (42) are arranged in a strip shape, and the width of the large torsion piece (41) is greater than that of the small torsion piece (42); The middle part of the torsion bar (5) is arranged in a cylindrical shape, and the inner diameter of both ends gradually increases and is matched with the end face of the first joint (1) and the second joint (2); The torsion spring (3) is connected with the groove on one side of the first joint (1) through a boss (6); the boss (6) comprises a first convex body (61) connected perpendicularly with the groove, and a second convex body (62) arranged on the first convex body (61); the diameter of the first convex body (61) is greater than that of the second convex body (62); and the torsion spring (3) is arranged on the first convex body (61).

2. A combined elastic element for folding rudders according to claim 1, characterized in that: An opening of 120 degrees is arranged on the groove corresponding to the boss (6).

3. A combined elastic element for folding rudders according to any of claims 1-2, characterized in that: The first joint (1) and the second joint (2) are integrally arranged in a cubic shape.

4. A combined elastic element for folding rudders according to claim 1, characterized in that: Both ends of the torsion piece group (4) are respectively fixed in the grooves arranged oppositely on the first joint (1) and the second joint (2) through locking pins (7).

5. A combined elastic element for folding rudders according to claim 1, characterized in that: The large torsion piece (41) and the small torsion piece (42) are both arranged as two pieces, and the large torsion piece (41) is arranged between the small torsion pieces (42).

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