Locking and unlocking device of folding rudder

Abstract

The utility model discloses a locking and unlocking device of a folding rudder. The locking and unlocking device comprises a locking pin, an unlocking key, a locking spring, a limiting screw and a fastening nail, the locking pin is connected with the locking spring, the unlocking key penetrates through the locking pin, the fastening nail is connected with the unlocking key, and the limiting screw is connected with the locking pin and the unlocking key. The folding rudder can be locked, and the folding rudder can be easily unlocked through an unlocking key under the condition that an exposed hole is not formed in the surface of the folding rudder surface, so that the folding rudder surface is folded; the locking and unlocking device is simple in structure, low in cost, high in reliability, capable of meeting the locking and unlocking requirements of folding rudders of various aircrafts and high in applicability; and through the arrangement of a limiting screw and a fastening nail, the stability of the locking and unlocking device is ensured, and it is ensured that an unlocking key cannot shake under the non-unlocking condition.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft folding rudders, and in particular relates to a locking and unlocking device for a folding rudder. Background Art

[0002] In order to reduce the storage and transportation of aircraft and save the storage and transportation space of launch devices, and increase the carrying capacity of vehicles, ships and aircraft, folding rudders are widely used in missile structures. At present, the main ways to lock the folding rudders are spanwise locking, lateral locking, etc. The most commonly used locking mechanism is a cylindrical or square locking pin that passes through the moving rudder surface and the fixed rudder surface to limit the rotational freedom between the two and achieve the purpose of locking.

[0003] Although the locking pin can complete the deployment and locking of the dynamic and fixed rudder surfaces through the locking spring during use, it cannot complete the unlocking process. Generally, it is necessary to drill holes in the rudder surface and the locking pin, and use tools to manually withdraw the locking pin through the preset holes to release the locking constraint. This method requires drilling holes on the rudder surface, affecting the aerodynamic shape of the folding rudder. At the same time, it requires special rod tools to operate, which reduces the versatility of the folding rudder. It is not appropriate to use the drilling method on the folding rudder used in high-speed flying missiles.

[0004] For example, the Chinese patent with the publication number CN104089547A discloses a folding rudder surface deployment and locking device, including a fire-operated cylinder, a push plate, a rudder surface, a rudder shaft, a rear seat of a tiller handle, a rudder handle, a thrust bearing, and a cabin, wherein the rudder surface is supported by a thrust bearing, and the rudder surface is fixedly connected to the rudder shaft connected to the cabin; the rudder handle and the rear seat of the rudder handle are mutually engaged, the rear seat of the rudder handle is installed on the rudder shaft, a shock-absorbing pad is provided on one end of the rear seat of the rudder handle, and an upper locking pin, a lower locking pin, an upper locking spring, and a lower locking spring for locking the rudder plate are installed in the rear seat of the rudder handle; the fire-operated cylinder is fixedly connected to the push plate. However, the patent does not provide an unlocking device. When unlocking is required, holes can only be drilled on the rudder surface and the locking pin, and the locking pin can be manually withdrawn through the preset hole with the help of a tool to release the locking constraint. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a locking and unlocking device for a folding rudder.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides a locking and unlocking device for a folding rudder, comprising a locking pin, an unlocking key, a locking spring, a limit screw and a fastening nail; the locking pin is connected to the locking spring, the unlocking key passes through the locking pin, the fastening nail is connected to the unlocking key, and the limit screw is respectively connected to the locking pin and the unlocking key.

[0008] Preferably, a rudder surface locking cone head is provided at one end of the locking pin, and a spring limiting column is provided at the other end, and the locking spring is connected to the locking pin via the spring limiting column.

[0009] Preferably, a key action slot is provided on the locking pin, and the unlocking key passes through the key action slot.

[0010] Preferably, one end of the unlocking key is a disc, and the other end is a key structure, and the key structure passes through the locking pin.

[0011] Preferably, the key structure comprises a connecting rod and a limiting block, and the connecting rod is connected to the fastening nail.

[0012] Preferably, the disc is provided with hexagonal structural grooves.

[0013] Preferably, a limiting groove is provided on the unlocking key, and the limiting groove is connected to a limiting screw.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model can lock the folding rudder. In the case of not setting an exposed opening on the surface of the folding rudder, the folding rudder can be easily unlocked by an unlocking key, thereby folding the rudder surface;

[0016] 2. The utility model has a simple structure, low cost, high reliability, meets the requirements of locking and unlocking the folding rudders of various types of aircraft, and has high applicability;

[0017] 3. The setting of limit screws and fastening nails ensures the stability of the locking and unlocking devices, ensuring that the unlocking key cannot shake when it is not unlocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the locking pin structure provided by an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the unlocking key structure provided by an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the unlocked state structure provided by an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the locking state structure provided by an embodiment of the utility model.

[0023] In the figure: 1-locking pin, 2-unlocking key, 3-locking spring, 4-limiting screw, 5-fastening nail, 6-rudder surface locking cone head, 7-spring limiting column, 8-key action groove, 9-disc, 11-connecting rod, 12-limiting block, 13-limiting groove, 14-fixed rudder surface, 15-moving rudder surface. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0025] like Figure 1 As shown, the utility model provides a locking and unlocking device for a folding rudder, comprising a locking pin 1, an unlocking key 2, a locking spring 3, a limit screw 4 and a fastening nail 5; the locking pin 1 is connected to the locking spring 3, the unlocking key 2 passes through the locking pin 1, the fastening nail 5 is connected to the unlocking key 2, and the limit screw 4 is respectively connected to the locking pin 1 and the unlocking key 2.

[0026] like Figure 4 As shown, the locking pin 1 is installed at the locking pin hole position in the fixed rudder surface 14. When the folding rudder is in the folded state, the locking pin 1 is limited by the passive rudder surface 15 so that it cannot pop outward. At this time, the locking spring 3 is in the ultimate compression state;

[0027] like Figure 5 As shown, when the folding rudder is in the unfolded state, the dynamic rudder surface 15 is displaced, the limit of the locking pin 1 is released, and the locking pin pops out under the elastic force of the locking spring 3 and extends into the pin hole of the dynamic rudder surface 15, completing the locking between the dynamic rudder surface 15 and the fixed rudder surface 14 of the folding rudder;

[0028] like Figure 2 As shown, a rudder surface locking cone head 6 is provided at one end of the locking pin 1, and a spring limiting column 7 is provided at the other end. The locking spring 3 is connected to the locking pin 1 via the spring limiting column 7.

[0029] The locking cone head 6 is narrow at the top and wide at the bottom. The narrow upper part can ensure that the locking pin 1 can enter the pin hole of the dynamic control surface 15 more smoothly when it pops out, while the wide lower part ensures that the locking pin 1 fills the pin hole, ensuring a more secure locking.

[0030] The locking spring 3 is connected via the spring limiting column 7 to limit the positions of the locking pin 1 and the locking spring 3 so that the locking pin 1 and the locking spring 3 cannot deviate from the expected positions, thereby ensuring the reliability of the locking and unlocking device.

[0031] The locking pin 1 is provided with a key action slot 8 , and the unlocking key 2 passes through the key action slot 8 .

[0032] The unlocking key 2 passes through the key action slot 8, so that the position of the locking pin 1 is controlled by the unlocking key 2, thereby realizing the unlocking function.

[0033] One end of the unlocking key 2 is a disk 9 , and the other end is a key structure, and the key structure passes through the locking pin 1 .

[0034] like Figure 3 As shown, one end of the unlocking key 2 is a disk 9 and the other end is a key structure, which converts the rotational torque into a linear force, so that the locking pin 1 withdraws from the pin hole, thereby completing the unlocking of the dynamic rudder surface and the fixed rudder surface.

[0035] The key structure includes a connecting rod 11 and a limiting block 12 , and the connecting rod 11 is connected to the fastening nail 5 .

[0036] The connecting rod 11 passes through the locking pin 1 and connects to the fastening nail 5, so that the unlocking key 2 cannot be detached, ensuring that the unlocking key 2 is on the rudder surface and will not fall out; the limit block 12 passes through the key action slot 8, so that the unlocking key 2 controls the position of the locking pin 1, thereby realizing the unlocking function.

[0037] The disc 9 is provided with hexagonal structural grooves.

[0038] Insert the hexagonal wrench into the hexagonal structural groove and rotate the unlocking key 2 so that the rotational torque is converted into a linear force through the unlocking mechanism, so that the locking pin 1 withdraws from the pin hole, thereby completing the unlocking of the dynamic rudder surface and the fixed rudder surface.

[0039] The hexagonal structural groove may also be a cross screw groove, or other tool structural groove, so as to facilitate driving the disc to rotate.

[0040] The unlocking key 2 is provided with a limiting groove 13 , and the limiting groove 13 is connected to the limiting screw 4 .

[0041] The limit groove 13 and the limit screw 4 are connected and cooperated to prevent the unlocking key 2 from rotating by itself during vibration, thereby preventing the unlocking key 2 from rotating by itself during vibration and affecting the normal use of the locking and unlocking device.

[0042] That is, during maintenance and use, the unfolded folding rudder needs to be restored to the folded state. At this time, the unlocking function of the locking and unlocking device needs to be used. The limit screw 4 needs to be removed first, and then the unlocking key 2 is rotated.

[0043] The installation method of the locking and unlocking device is as follows: after the locking spring 3 is sleeved on the spring limit column 7, the combination is placed in the corresponding locking pin hole position of the folding rudder for installation, the unlocking key 2 passes through the preset key hole, and after the limit block 12 is inserted into the key action groove 8 of the locking pin, the limit screw 4 and the fastening nail 5 are continued to be installed to complete the installation of the locking and unlocking device.

[0044] The method of using the locking and unlocking device is as follows:

[0045] When the rudder is not deployed, turn the unlocking key 2 to the locked position, but the locking pin 1 cannot pop out due to the obstruction of the external rudder. Until the rudder is deployed, the locking pin 1 automatically pops out and locks the folding rudder.

[0046] After the rudder is deployed, the locking pin 1 cannot be retracted due to the limit of the unlocking key 2 and the elastic force of the locking spring 3, and remains locked. When unlocking is required, the limit screw 4 is removed, and the unlocking key 2 is rotated by the hexagonal wrench. The locking pin 1 is driven by the unlocking key 2 and retracts into the pin hole against the elastic force of the locking spring, and the unlocking is completed.

[0047] The utility model can lock the folding rudder. Without setting an exposed opening on the surface of the folding rudder, the folding rudder can be easily unlocked by using an unlocking key, so that the rudder surface is folded. The utility model has a simple structure, low cost, and high reliability, and meets the needs of locking and unlocking folding rudders of various types of aircraft, and has high applicability. The stability of the locking and unlocking device is ensured by the setting of the limit screw and the fastening nail, and it is ensured that the unlocking key cannot shake when it is not unlocked.

Claims

1. A locking and unlocking device for a folding rudder, characterized in that: The invention comprises a locking pin (1), an unlocking key (2), a locking spring (3), a limiting screw (4) and a fastening nail (5); the locking pin (1) is connected to the locking spring (3), the unlocking key (2) passes through the locking pin (1), the fastening nail (5) is connected to the unlocking key (2), and the limiting screw (4) is respectively connected to the locking pin (1) and the unlocking key (2).

2. A locking and unlocking device for a folding rudder as claimed in claim 1, characterized in that: One end of the locking pin (1) is provided with a rudder surface locking cone head (6), and the other end is provided with a spring limiting column (7); the locking spring (3) is connected to the locking pin (1) via the spring limiting column (7).

3. A locking and unlocking device for a folding rudder as claimed in claim 1, characterized in that: The locking pin (1) is provided with a key action slot (8), and the unlocking key (2) passes through the key action slot (8).

4. A locking and unlocking device for a folding rudder as claimed in claim 1, characterized in that: One end of the unlocking key (2) is a disk (9), and the other end is a key structure, and the key structure passes through the locking pin (1).

5. A locking and unlocking device for a folding rudder as claimed in claim 4, characterized in that: The key structure comprises a connecting rod (11) and a limiting block (12), and the connecting rod (11) is connected to a fastening nail (5).

6. A locking and unlocking device for a folding rudder as claimed in claim 4, characterized in that: The disc (9) is provided with a hexagonal structural groove.

7. A locking and unlocking device for a folding rudder as claimed in claim 1, characterized in that: The unlocking key (2) is provided with a limiting groove (13), and the limiting groove (13) is connected to the limiting screw (4).

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