Rapid repeated folding and unfolding control device for simulating control surface

Abstract

The invention provides a rapid and repeated folding and unfolding control device for simulating a control surface, relates to the technical field of aircraft testing, and aims to solve the technical problem that a control surface simulating device cannot be folded and unfolded repeatedly. The device comprises a base, a tiller and a control surface connected with the tiller, wherein the tiller is rotationally arranged on the base; the tiller is provided with a first arc surface opposite to the control surface and further provided with a locking groove formed in the first arc surface. The device further comprises a reset element and a sliding block arranged on the base in a sliding mode. The sliding block is provided with a first protruding block and a second protruding block which are opposite to the reset element. Wherein the length of the first convex block is greater than that of the second convex block; the simulation device further comprises a stop ring hinged to the base, and the stop ring is provided with a first end and a second end. When the device is in a locking mode, the second protruding block abuts against the interior of the locking groove, and the first protruding block abuts against the second end of the stop ring. The device for simulating the control surface is compact in structure, can avoid repeated disassembly and assembly, and is high in unfolding and folding conversion speed.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft testing, and in particular to a device for simulating a control surface and a folding and unfolding method. Background Art

[0002] At present, many small airborne aircraft use folding control surface structures, which are easy to fix and save space to the greatest extent. Folding structures can usually be divided into horizontal folding and vertical folding according to the folding direction. Horizontal folding is difficult to meet the outer envelope requirements of small-diameter aircraft, so most small aircraft use vertical folding structures.

[0003] The folding rudder structure usually uses springs as the power source, and relies on the pin puller or the launch tube wall as a limiter to keep the rudder in the initial folded state. After being launched out of the tube, the pin puller is unlocked by pyrotechnics to unfold the rudder. Most of these folding structures are one-time unfolding mechanisms, which cannot be folded again after unfolding, and some structures involve pyrotechnics and cannot be unlocked under ground testing conditions. During the ground testing of the aircraft, the rudder is simulated to have the equivalent real moment of inertia. In the related art, the simulated folding structure of the rudder cannot be folded and unfolded repeatedly. Summary of the invention

[0004] The object of the present invention is to provide a device for simulating a rudder surface, a device for simulating a rudder surface, and a folding and unfolding method, so as to solve the technical problem that the device for simulating a rudder surface cannot be repeatedly folded and unfolded.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides a device for simulating a rudder surface, which is used for simulating the repeatable folding of the rudder surface, the device comprising a base, a tiller and a rudder surface connected to the tiller, wherein the tiller is rotatably mounted on the base;

[0007] The tiller handle has a first arc surface opposite to the rudder surface, and the tiller handle also has a locking groove formed on the first arc surface;

[0008] The device further comprises a reset element and a slider slidably arranged on the base, wherein the slider has a first protrusion and a second protrusion opposite to the reset element; wherein the length of the first protrusion is greater than the length of the second protrusion;

[0009] The device also includes a retaining ring hinged to the base, the retaining ring having a first end and a second end;

[0010] When the device is in a locking mode, the second protrusion abuts in the locking groove, and the first protrusion abuts against the second end of the stop ring;

[0011] When the device is in the unlocking mode, the stop ring is used to push the slider to slide in a direction away from the tiller handle.

[0012] According to at least one embodiment of the present invention, the tiller handle further has a preset side surface and a third protrusion located on the preset side surface, wherein the preset side surface is a side surface of the tiller handle facing the base;

[0013] When the device is in unlocking mode, the third protrusion cooperates with the first end, the third protrusion is used to drive the second end of the stop ring to swing, and the second end of the stop ring is used to push the first protrusion to slide away from the tiller handle.

[0014] According to at least one embodiment of the present invention, the hinged position between the retaining ring and the base is close to the first end of the retaining ring.

[0015] According to at least one embodiment of the present invention, a torsion spring is further provided at the rotational connection position between the tiller handle and the base;

[0016] When the device is in the folding mode, the torsion spring is used to drive the tiller handle to rotate around the base at a preset angle.

[0017] According to at least one embodiment of the present invention, the second end of the retaining ring has a second arc surface, and the first protrusion has a third arc surface matching the second arc surface.

[0018] According to at least one embodiment of the present invention, the first end of the retaining ring has a first flat surface that cooperates with the third protrusion.

[0019] According to at least one embodiment of the present invention, the second protrusion has a fourth arc surface matching with the first arc surface.

[0020] According to at least one embodiment of the present invention, the second protrusion further has a second plane adjacent to the fourth arc surface, and the locking groove has a third plane matching the second plane;

[0021] When the device is in the locked mode, the second plane is aligned with the third plane.

[0022] According to at least one embodiment of the present invention, the base has a boss, and the boss has a slide groove for the sliding block to slide;

[0023] The boss has a first side wall facing the tiller handle, the outer surface of the first side wall has a fifth arc surface matched with the first arc surface, and the fifth arc surface has an opening for the first convex block and the second convex block to pass through;

[0024] The outer surface of the first side wall also has a fourth plane connected to the fifth arc surface, and the fourth plane is used for limiting the position of the tiller handle.

[0025] According to at least one embodiment of the present invention, the boss further has a second side wall opposite to the first side wall, and the second side wall has a second limiting groove;

[0026] One end of the sliding block facing the second side wall has a first limiting groove, one end of the resetting element is embedded in the first limiting groove, and the other end is embedded in the second limiting groove.

[0027] According to at least one embodiment of the present invention, the base has a groove for accommodating the retaining ring, and the thickness of the retaining ring and the thickness of the first protrusion are both less than or equal to the groove depth of the groove.

[0028] In a second aspect, the present invention further provides a method for folding and unfolding a device for simulating a rudder surface, wherein the device for simulating a rudder surface is the device for simulating a rudder surface described in the first aspect, and the method comprises:

[0029] A tiller is provided, wherein the tiller is in an initial position, and the tiller is rotated to a preset position, and under the action of a reset element, the second protrusion stops in the locking groove;

[0030] The tiller handle is continuously rotated, the third protrusion pushes the stop ring to swing, the stop ring pushes the first protrusion to move away from the tiller handle, and the second protrusion disengages from the locking groove;

[0031] The tiller handle is reversely rotated to the initial position by the torsion spring.

[0032] The present invention can achieve at least one of the following beneficial effects.

[0033] The device for simulating a rudder surface of an exemplary embodiment of the present invention comprises a base, a tiller and a rudder surface, wherein the tiller and the rudder surface are rotatably arranged on the base. A slider is slidably arranged on the base, wherein the slider has a first protrusion and a second protrusion. When the device is in a locking mode (expanding mode), a locking groove is arranged on the first arc surface of the tiller, and at this time, the second protrusion is stopped in the locking groove, so that the relative position of the tiller and the base remains fixed. When the device needs to be unlocked, the base also includes a stop ring hinged to the base, and the stop ring pushes the first protrusion abutting against the second end, thereby driving the slider to slide in a direction away from the tiller. Since the length of the first protrusion is greater than the length of the second protrusion, the second protrusion on the slider is disengaged from the locking groove, and the tiller can be rotated to a folded position after being unlocked, thereby realizing repeated folding and unfolding between the rudder surface and the base. Compared with mechanisms such as pin pullers, the device for simulating a rudder surface of the present invention has a compact structure, strong versatility, avoids repeated disassembly and assembly, and has a fast unfolding and folding conversion speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings illustrate exemplary embodiments of the present invention and together with the description serve to explain the principles of the present invention, and these drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification;

[0035] Figure 1 is a schematic diagram of an exploded structure of a device for simulating a rudder surface according to an embodiment of the present invention;

[0036] Figure 2 is a schematic diagram of an axonometric structure of a base according to an embodiment of the present invention;

[0037] Figure 3 is a schematic diagram of a locking mode structure of a device for simulating a control surface according to an embodiment of the present invention;

[0038] Figure 4 is a schematic diagram of the folding mode structure of the device for simulating a rudder surface according to an embodiment of the present invention;

[0039] Figure 5 is a rear view structural schematic diagram of a locking mode of a device for simulating a control surface according to an embodiment of the present invention;

[0040] Figure 6 is another exploded structural schematic diagram of a device for simulating a control surface according to an embodiment of the present invention.

[0041] Figure numerals: 10, base; 11, boss; 111, first side wall; 111a, fifth arc surface; 111b, fourth plane; 112, second side wall; 112a, second limiting groove; 113, slide groove; 12, groove; 13, stop ring; 131, first plane; 132, second arc surface; 21, first protrusion; 211, third arc surface; 22, second protrusion; 221, fourth arc surface; 222, second plane; 23, first limiting groove; 31, rudder handle; 311, first arc surface; 312, third plane; 313, preset side; 313a, third protrusion; 32, rudder surface; 40, reset element; 50, torsion spring. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] Small airborne aircraft use a folding rudder structure, which can be easily fixed and save space to the greatest extent. Generally, according to the folding direction, it can be divided into horizontal folding and vertical folding. The horizontal folding is difficult to meet the outer envelope requirements of small diameter aircraft. Therefore, most small aircraft use a vertical folding structure.

[0044] However, during the ground test of the aircraft, it is necessary to use the simulated control surface equivalent to the real moment of inertia. During the production process, the simulated control surface can be folded up for easy transportation. During the debugging process, the simulated control surface needs to be unfolded for system comprehensive testing. The folding control surface structure of the aircraft usually uses springs as the power source, and relies on the pin puller or the launch tube wall as a limit to keep the control surface in the initial folded state. After being launched out of the tube, the pin puller is unlocked by pyrotechnics to unfold the control surface. This type of folding structure is a one-time unfolding mechanism, which cannot be folded again after unfolding, and some structures involve pyrotechnics and cannot be unlocked in the ground test state.

[0045] In order to meet the test requirements in the ground test, the control surface needs to be folded quickly and repeatedly. In the related art, the simulated control surface used for ground test does not have the function of fast and repeatable folding.

[0046] In view of the above problems, the device for simulating a rudder surface provided by the exemplary embodiment of the present invention utilizes the mutual cooperation between the locking groove, the stop ring and two protrusions of different lengths provided on the same slider on the tiller handle, and the shorter second protrusion is used to be embedded in the locking groove to form a lock between the tiller handle and the base, that is, the unfolded state. When the tiller handle is rotated, the swing of the stop ring will push the longer first protrusion, and the second protrusion will be driven by the slider to disengage from the locking groove and unlock, so that the tiller handle can be reversed and returned to the folded state, thereby realizing a fast and repeatable folding and unfolding action.

[0047] It should be noted that the device for simulating control surfaces provided in the exemplary embodiment of the present invention is not only applicable to ground tests for simulating the unfolding and folding of control surfaces and related tests, but is also applicable to the unfolding and folding of control surfaces during the actual flight of an aircraft.

[0048] Figure 1 is a schematic diagram of an exploded structure of a device for simulating a rudder surface according to an embodiment of the present invention; Figure 2 Schematic diagram of the isometric structure of the base according to an embodiment of the present invention. Figure 1-Figure 2As shown, the device for simulating a rudder surface provided by an exemplary embodiment of the present invention includes a base 10, a tiller 31 and a rudder surface 32 connected to the tiller 31, wherein the tiller 31 is rotatably arranged on the base 10; the tiller 31 has a first arc surface 311 and a preset side surface 313 facing the base 10, wherein the first arc surface 311 is opposite to the rudder surface 32, and the tiller 31 also has a locking groove formed on the first arc surface 311; the device also includes a reset element 40 and a slider slidably arranged on the base 10, wherein the slider has a first protrusion 21 and a second protrusion 22 opposite to the reset element 40; wherein the length of the first protrusion 21 is greater than the length of the second protrusion 22; the device also includes a stop ring 13 hinged to the base 10, wherein the stop ring 13 has a first end and a second end; when the device is in a locking mode, the second protrusion 22 is stopped in the locking groove, and the first protrusion 21 is abutted against the second end of the stop ring 13; when the device is in an unlocking mode, the stop ring 13 is used to push the slider to slide in a direction away from the tiller 31.

[0049] In actual application, the tiller handle 31 rotates around the base 10, wherein the tiller handle 31 has a first arc surface 311, wherein the first arc surface 311 and the rudder surface 32 are arranged opposite to each other on the tiller handle 31. A stop ring 13 is also hinged on the base 10, and the stop ring 13 can swing relative to the base 10, and has two ends, namely, a first end and a second end. Under the action of the reset element 40, the slider approaches the first arc surface 311 of the tiller handle 31, wherein the first protrusion 21 abuts against the second end of the stop ring 13, and the second protrusion 22 abuts against the first arc surface 311. When the tiller handle 31 rotates to a preset position, that is, when the device is in a locking mode, the second protrusion 22 abuts against the locking groove of the first arc surface 311 under the action of the reset element 40, thereby forming a limit between the tiller handle 31 and the base 10. It should be noted that the locking mode simulates the unfolded state of the rudder surface, that is, the central axis of the tiller handle is coaxial with the central axis of the base, that is, the angle between the tiller handle 31 and the base 10 is 0°.

[0050] Figure 3 is a schematic diagram of the locking mode structure of the device for simulating a rudder surface according to an embodiment of the present invention; Figure 3 The state shown is that the device is in the locked mode, and the tiller handle 31 can no longer rotate counterclockwise to achieve the following Figure 4 Shown in folded state.

[0051] In order to achieve the repeated folding of the device, the device state in the locked mode needs to be unlocked. Figure 3As shown in the figure, when the device is in the unlocking mode, the tiller 31 rotates clockwise along the base 10. At this time, the stop ring 13 will swing to a certain extent. The first protrusion 21 abutting against the second end of the stop ring 13 will drive the slider to overcome the elastic force of the reset element 40 under the push of the stop ring 13, and the slider will slide away from the tiller 31, so that the second protrusion 22 will be separated from the locking groove on the first arc surface 311, and then the limit will be released. At this time, when the tiller 31 rotates counterclockwise, it will return to the position shown in the figure. Figure 4 Shown in folded state.

[0052] As can be seen from the above, the device simulating the rudder surface can achieve fast and repeatable folding and unfolding actions through the cooperation of the stop ring 13, the reset element 40, the slider and the first and second protrusions 21 and 22 on the slider, the first arc surface 311 on the tiller handle 31, and the locking groove formed on the first arc surface 311. Compared with the folding and unfolding device in the prior art, it is not only compact in structure, but also highly versatile, avoiding repeated disassembly and assembly work.

[0053] Exemplarily, the reset element 40 may be a compression spring or other element that can provide elastic force. One or more springs may be used to provide the restoring force of the slider, so that the first protrusion 21 and the second protrusion 22 on the slider abut against the corresponding parts of the tiller handle 31 or the retaining ring 13, and a contact with a certain compensation force is formed on the corresponding area of ​​the second protrusion 22 and the tiller handle 31.

[0054] Exemplarily, the first protrusion 21 and the second protrusion 22 are arranged on the slider in parallel, wherein the length of the first protrusion 21 is greater than the length of the second protrusion 22, that is, the distance between the retaining ring 13 and the slider body is greater than the distance between the first arc surface 311 on the tiller 31 and the slider body. It should be noted that the tiller 31 is rotatably connected to the base 10 via the rotating shaft, and the first protrusion 21 and the second protrusion 22 are distributed along the axial direction of the rotating shaft, and the first protrusion 21 is closer to the base 10 than the second protrusion 22.

[0055] It should be noted that, opposite to the base 10, there is also a cover plate opposite to the base 10, and the cover plate has a rotation axis. When the base 10 and the cover plate are fixedly assembled, the tiller handle 31 can rotate around the rotation axis.

[0056] Figure 6 FIG. 2 is another exploded structural schematic diagram of a device for simulating a rudder surface according to an embodiment of the present invention. Figure 6As shown, the tiller handle 31 also has a preset side surface 313 and a third protrusion 313a located on the preset side surface 313, and the preset side surface 313 is the side surface of the tiller handle 31 facing the base 10; when the device is in the unlocking mode, the third protrusion 313a cooperates with the first end, and the third protrusion 313a is used to drive the second end of the stop ring 13 to swing, and the second end of the stop ring 13 is used to push the first protrusion 21 to slide in the direction away from the tiller handle 31.

[0057] Exemplarily, the third protrusion 313a may be a cuboid, or a protrusion protruding from the preset side surface 313, as long as it can cooperate with the first end of the stop ring 13 to push the stop ring 13 to swing along the hinged position.

[0058] Figure 5 FIG. 2 is a schematic diagram of the rear view structure of the locking mode of the device for simulating the control surface according to an embodiment of the present invention. Figure 5 As shown, the first end of the stop ring 13 has a first plane 131 that matches the third protrusion 313a. The third protrusion 313a and the first plane 131 can be flat to facilitate the fit of the two to form a stable contact, so as to avoid the failure of the third protrusion 313a to push the first end of the stop ring 13 when the tiller handle 31 is turned.

[0059] When the hinged position of the stop ring 13 and the base 10 is close to the first end of the stop ring 13, by rotating the tiller handle 31, the third protrusion 313a applies a small force to the first end of the stop ring 13, so that the second end of the stop ring 13 can swing to a certain extent, and the first protrusion 21 is pushed by the second end of the stop ring 13, that is, the slider slides in the direction away from the tiller handle 31, so that the second protrusion 22 disengages from the locking groove, so that the device simulating the rudder surface is in an unlocked state.

[0060] Exemplarily, the retaining ring 13 is an arc segment, and the angle of the arc may be 180° or less than 180°, that is, the retaining ring 13 may be a semicircular ring or less than a semicircular ring.

[0061] In an optional embodiment, the hinged position of the stop ring 13 and the base 10 may also be located in the middle of the entire arc segment of the stop ring 13. Compared to the middle position of the stop ring 13, when the hinged position of the stop ring 13 and the base 10 is close to the first end of the stop ring 13, the swing amplitude of the second end of the stop ring 13 is larger, that is, the stop ring 13 and the base 10 can be arranged more compactly, the volume can be made smaller, and the production and transportation are more convenient.

[0062] In some embodiments, Figure 3 , Figure 5 and Figure 6As shown, a torsion spring 50 is also provided at the rotational connection position between the tiller handle 31 and the base 10 ; when the device is in the unlocking mode, the torsion spring 50 is used to drive the tiller handle 31 to rotate around the base 10 at a preset angle.

[0063] For example, Figure 3 As shown, the torque provided by the torsion spring 50 is in the counterclockwise direction. Figure 3 In the locking mode shown, the tiller handle 31 rotates clockwise, so that the third protrusion 313a pushes the stop ring 13 to swing, and then drives the first protrusion 21 to move away from the tiller handle 31, so that when the device simulating the rudder surface is in the unlocking mode, under the action of the counterclockwise torque provided by the torsion spring 50, the tiller handle 31 will quickly rotate counterclockwise along the base 10 to a preset angle, that is, the device simulating the rudder surface reaches a folded state. Due to the use of the torsion spring 50, the tiller handle 31 is unlocked by slightly rotating it, and then it can quickly enter the folded state, thereby realizing the automatic rebound and folding function of the device simulating the rudder surface.

[0064] For example, when the device simulating the rudder surface is in the folding mode, the angle between the tiller handle 31 and the base 10 is 90°. Figure 4 It is understandable that the above preset angle can also be set to an angle greater than or less than 90° according to actual needs, and in some embodiments, no further limitation is made.

[0065] like Figure 2 As shown, the second end of the retaining ring 13 has a second arc surface 132, and the first protrusion 21 has a third arc surface 211 that matches the second arc surface 132. The second arc surface 132 can be a cylindrical surface, and the second arc surface 132 of the first protrusion 21 is an inclined arc surface. From another perspective, it can be described as follows: the length of the first protrusion 21 protruding from the slider body on the side close to the first end of the retaining ring 13 is greater than the length of the first protrusion 21 on the side away from the first end of the retaining ring 13. The length here refers to the height of the first protrusion 21 protruding from the slider body. This embodiment allows the retaining ring 13 to continuously push the first protrusion 21 (slider) to gradually move away from the tiller handle 31 during the swinging process.

[0066] Similarly, if Figure 2 and Figure 4 As shown, the second protrusion 22 of the device for simulating a rudder surface according to the exemplary embodiment of the present invention has a fourth arc surface 221 matched with the first arc surface 311 .

[0067] Exemplarily, the fourth arc surface 221 of the second protrusion 22 is similar to the second arc surface 132 of the first protrusion 21, and is also an inclined arc surface, which will not be described in detail here. Because the fourth arc surface 221 is under the action of the reset element 40, it is always in contact with the first arc surface 311 of the tiller handle 31 during the change from the folded state of the device simulating the rudder surface to the unfolded locked state, until the second protrusion 22 enters the locking groove when the device simulating the rudder surface enters the locked state. When the device simulating the rudder surface needs to be unlocked, the tiller handle 31 is rotated so that the second protrusion 22 is out of the locking groove, and the fourth arc surface 221 of the second protrusion 22 contacts another part of the first arc surface 311 until it is released by the torsion spring 50 and enters the folded state.

[0068] In order to keep the tiller handle 31 and the base 10 in an unfolded state, Figure 3-Figure 4 As shown, the second protrusion 22 also has a second plane 222 adjacent to the fourth arc surface 221 , and the locking groove has a third plane 312 matching the second plane 222 ; when the device is in the locking mode, the second plane 222 fits the third plane 312 .

[0069] Exemplarily, the locking groove is an L-shaped slot having a third plane 312. When the tiller handle 31 and the base 10 are in an unfolded state, that is, in a locking mode, the second protrusion 22 enters the locking groove, and the second plane 222 of the second protrusion 22 is affixed with the third plane 312 of the locking groove. By affixing two planes, the tiller handle 31 cannot be moved along the same plane. Figure 3 Furthermore, since the torsion spring 50 also has a counterclockwise torque, that is, the second protrusion 22 remains in the locking groove, when unlocking is required, a person needs to manually overcome the torque of the torsion spring 50 to rotate the tiller handle 31 clockwise. Based on this, through the action of the torsion spring 50, the second plane 222 and the third plane 312 are always attached together in the locking mode, which is less likely to fail than the contact between two curved surfaces.

[0070] Considering the rotational connection between the tiller handle 31 and the base 10, Figure 2 As shown, the base 10 has a boss 11, and the boss 11 has a slide groove 113 for the slider to slide; the boss 11 has a first side wall 111 facing the tiller handle 31, and the outer surface of the first side wall 111 has a fifth arc surface 111a that cooperates with the first arc surface 311, and the fifth arc surface 111a has an opening for the first protrusion 21 and the second protrusion 22 to pass through; the outer surface of the first side wall 111 also has a fourth plane 111b connected to the fifth arc surface 111a, and the fourth plane 111b is used to limit the tiller handle 31.

[0071] For example, the fifth arc surface 111a is opposite to and matches the first arc surface 311 of the tiller handle 31, so that the fifth arc surface 111a and the first arc surface 311 will not interfere with each other during the rotation of the tiller handle 31, including the rotation from the folding mode to the locking mode and then to the unlocking mode. Specifically, an opening is provided on the fifth arc surface 111a, that is, the first side wall 111, so that the first protrusion 21 and the second protrusion 22 extend from the slide groove 113 and cooperate with the tiller handle 31 or the stop ring 13.

[0072] For example, the fourth plane 111b can limit the relative position between the tiller handle 31 and the base 10. For example, when the device is switched from the unlocked mode to the folded mode, as shown in FIG. Figure 4 As shown, under the action of the torsion spring 50, the tiller handle 31 will rotate counterclockwise to the fourth plane 111b and stop, that is, the rudder surface is in a vertical state on the paper. At this time, the device simulating the rudder surface is in a folded state. That is, one surface of the tiller handle 31 is attached to the fourth plane 111b.

[0073] In order to maintain the relative position of the reset element 40 when the slider slides, Figure 2 As shown, the boss 11 also has a second side wall 112 opposite to the first side wall 111, and the second side wall 112 has a second limiting groove 112a; the end of the slider facing the second side wall 112 has a first limiting groove 23, and one end of the reset element 40 is embedded in the first limiting groove 23, and the other end is embedded in the second limiting groove 112a. Both ends of the reset element 40 are embedded in the corresponding limiting grooves, and the reset element 40 can be limited, so that the relative positions of the reset element 40, the slider, and the sliding groove 113 are fixed.

[0074] For example, Figure 2 As shown, the base 10 also has a groove 12 for accommodating a retaining ring 13, and the thickness of the retaining ring 13 and the thickness of the first protrusion 21 are both less than or equal to the groove depth of the groove 12. The thickness of the retaining ring 13, the thickness of the first protrusion 21 and the groove depth of the groove 12 are all in the axial direction of the rotating shaft.

[0075] The groove 12 formed on the base 10 can, on the one hand, limit the retaining ring 13 from being separated from its functional position, and on the other hand, through the assembly between the base 10, the cover plate and the rotating shaft, each corresponding internal component can be arranged in the groove 12, and the overall structure is more compact and the volume is reduced.

[0076] The exemplary embodiment of the present invention further provides a method for folding and unfolding a device simulating a rudder surface, wherein the device simulating a rudder surface is used to perform repeatable folding and unfolding, and the folding and unfolding method comprises:

[0077] Step 701: providing a tiller handle 31, wherein the tiller handle 31 is in an initial position, rotating the tiller handle 31 to a preset position, and under the action of the resetting element 40, the second protrusion 22 stops in the locking groove;

[0078] like Figure 4 As shown, the tiller handle 31 and the base 10 are in a mutually perpendicular folded state. The tiller handle 31 is rotated clockwise, and the fourth arc surface 221 of the second protrusion 22 is stopped on the first arc surface 311 of the tiller handle 31 through the reset element 40 until the position of the locking groove. Under the action of the reset element 40, the second protrusion 22 extends into the locking groove, wherein the second plane 222 of the second protrusion 22 is fitted with the third plane 312 of the locking groove. Since the torsion spring 50 provides a counterclockwise torque, at this time, the second plane 222 is maintained on the third plane 312 with a certain pressure and fits. Based on this, the tiller handle 31 and the base 10 are in a locked state (as shown in FIG. 1 ). Figure 3 ), that is, the expanded state.

[0079] Step 702: Continue to rotate the tiller handle 31, the third protrusion pushes the stop ring 13 to swing, the stop ring 13 pushes the first protrusion 21 to move away from the tiller handle 31, and the second protrusion 22 disengages from the locking groove.

[0080] When the device simulating the rudder surface needs to be folded, the locked state of the device is unlocked. Figure 3 On the basis of the state shown, the torque of the torsion spring 50 is overcome, and the tiller handle 31 is rotated clockwise. At this time, the third protrusion 313a on the tiller handle 31 pushes the first plane 131 of the first end of the stop ring 13, so that the stop ring 13 swings at a small angle along the hinge position, and the second arc surface 132 on the second end of the stop ring 13 pushes the first protrusion 21, that is, the slider slides in the direction away from the tiller handle 31. Based on this, the second protrusion 22 is disengaged from the locking groove, thereby releasing the limit, and the device simulating the rudder surface enters the unlocking mode.

[0081] Step 703: The tiller handle 31 is rotated in the opposite direction to the initial position through the torsion spring 50.

[0082] When the device simulating the rudder surface enters the unlocking mode, the torsion spring 50 provides a counterclockwise torque, which drives the tiller handle 31 to rotate counterclockwise until it fits with the fourth plane 111b on the base 10 and returns to the folded state.

[0083] It should be noted that the torsion spring 50 can be sleeved on the rotating shaft and arranged in the shaft hole of the tiller handle 31 for the rotating shaft to pass through. The specific arrangement method is a commonly used arrangement method and will not be further described here.

[0084] It should be pointed out that since the rudder surface 32 is connected to the tiller handle 31 , the length directions of the two are consistent, and the above description of the relative position relationship between the tiller handle 31 and the base 10 is also equivalent to the relative position relationship between the rudder surface 32 and the base 10 .

[0085] It can be seen from the above that the device for simulating the rudder surface of the present invention can be unlocked under the ground test state, thereby realizing the rapid and repeated folding and unfolding actions of the rudder surface simulation, avoiding repeated disassembly and assembly work, improving production efficiency and reducing transportation costs.

[0086] It should be understood by those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A device for simulating a rudder surface, characterized in that: Used to simulate a repeatedly foldable rudder surface, the device comprises a base, a tiller and a rudder surface connected to the tiller, wherein the tiller is rotatably arranged on the base; The tiller handle has a first arc surface opposite to the rudder surface, and the tiller handle also has a locking groove formed on the first arc surface; The device further comprises a reset element and a slider slidably arranged on the base, wherein the slider has a first protrusion and a second protrusion opposite to the reset element; wherein the length of the first protrusion is greater than the length of the second protrusion; The device also includes a retaining ring hinged to the base, the retaining ring having a first end and a second end; When the device is in the locking mode, the second protrusion is stopped in the locking groove, and the first protrusion is abutted against the second end of the stop ring.

2. The device according to claim 1, characterized in that When the device is in the unlocking mode, the stop ring is used to push the slider to slide in a direction away from the tiller handle.

3. The device according to claim 1, characterized in that The second end of the retaining ring has a second arc surface, and the first protrusion has a third arc surface matched with the second arc surface.

4. The device according to claim 2, characterized in that The first end of the retaining ring has a first plane matched with the third protrusion.

5. The device according to claim 1, characterized in that The second protrusion has a fourth arc surface matched with the first arc surface.

6. The device according to claim 5, characterized in that The second protrusion also has a second plane adjacent to the fourth arc surface, and the locking groove has a third plane matched with the second plane; When the device is in the locked mode, the second plane is aligned with the third plane.

7. The simulation device according to claim 1, characterized in that The base has a boss, and the boss has a slide groove for the sliding block to slide; The boss has a first side wall facing the tiller handle, the outer surface of the first side wall has a fifth arc surface matched with the first arc surface, and the fifth arc surface has an opening for the first convex block and the second convex block to pass through; The outer surface of the first side wall also has a fourth plane connected to the fifth arc surface, and the fourth plane is used for limiting the position of the tiller handle.

8. The device according to claim 7, characterized in that The boss also has a second side wall opposite to the first side wall, and the second side wall has a second limiting groove; One end of the sliding block facing the second side wall has a first limiting groove, one end of the resetting element is embedded in the first limiting groove, and the other end is embedded in the second limiting groove.

9. The device according to claim 8, characterized in that The base has a groove for accommodating the retaining ring, and the thickness of the retaining ring and the thickness of the first protrusion are both less than or equal to the groove depth of the groove.

10. A method for folding and unfolding a device simulating a rudder surface, characterized in that: The rudder surface is folded and unfolded using the device for simulating the rudder surface described in any one of claims 1 to 9.

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