A folding control surface unlocking tool

Abstract

The application relates to a folding control surface unlocking tool and belongs to the technical field of folding and unfolding; the tool comprises a fixing base, a pull rod, a pin shaft, a special nut and a fixing screw; the fixing base is horizontally installed on an external folding control surface, and the fixing base is fixedly connected with the external folding control surface through the fixing screw; a through hole is arranged in the horizontal middle part of the fixing base, and the pull rod horizontally penetrates through the through hole; the special nut is horizontally arranged at the outer side wall of the fixing base; the special nut is coaxially connected with the pull rod; an axial vertical pin hole is arranged on the pull rod, the pin shaft is vertically inserted into the pin hole, and the bottom end of the pin shaft is connected with the locking structure of the external folding control surface through the fixing base; the tool is labor-saving, simple to operate, safe and reliable when unlocking the control surface.

Description

Technical Field

[0001] This invention belongs to the field of folding and unfolding technology, and relates to a folding rudder unlocking tool. Background Technology

[0002] In the aerospace field, folding control surfaces are often necessary to save space in aircraft. These control surfaces are locked using a spring-loaded locking mechanism. During production, the unlocking structure requires repeated unlocking and locking tests. The unlocking process necessitates simultaneous movements in multiple directions. Due to the significant locking force, it is difficult to manually pull the locking pin and maintain the unlocked state. Summary of the Invention

[0003] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a folding control surface unlocking fixture, which achieves labor-saving, simple operation and safe and reliable control surface unlocking.

[0004] The solution of the present invention is:

[0005] A folding rudder unlocking fixture includes a mounting base, a pull rod, a pin, a special nut, and a fixing screw;

[0006] The fixed base is horizontally installed on the external folding rudder surface and is fixedly connected to the external folding rudder surface by fixing screws; a through hole is provided in the horizontal middle of the fixed base, and the pull rod passes horizontally through the through hole; a special nut is horizontally set on the outer side wall of the fixed base; and the special nut is coaxially connected with the pull rod; the pull rod is provided with an axially vertical pin hole, the pin is vertically inserted into the pin hole, and the bottom end of the pin passes through the fixed base and is connected to the locking structure of the external folding rudder surface.

[0007] In the aforementioned folding rudder unlocking fixture, the shaft end of the specially designed nut has a threaded hole.

[0008] In the aforementioned folding rudder unlocking fixture, the pin and pin hole are clearance fit.

[0009] In the aforementioned folding rudder unlocking fixture, the pull rod is an integrally machined long cylindrical rod structure; the outer wall of one axial end of the pull rod is provided with a threaded hole, which extends into the threaded hole of a special nut to achieve threaded connection.

[0010] The working process of the aforementioned folding control surface unlocking fixture is as follows:

[0011] By tightening a special nut, the pull rod can move horizontally along the axis in the fixed seat. The locking structure of the external folding rudder surface is opened or closed by the pin, thereby unlocking or locking the external folding rudder surface.

[0012] In the aforementioned folding rudder unlocking fixture, when rotating the special nut, the special nut and the pull rod are threaded together to allow the special nut to rotate at different angles as needed, thus maintaining different unlocking positions.

[0013] In the aforementioned folding rudder unlocking fixture, a waist-shaped hole is provided inside the fixed seat; the pin is located in the waist-shaped hole, that is, the horizontal movement space of the pin is within the range of the waist-shaped hole, to prevent the pull rod from detaching from the fixed seat.

[0014] In the aforementioned folding rudder unlocking fixture, a specially designed nut and pull rod with matching thread pitch achieve load reduction and low torque pulling.

[0015] In the aforementioned folding rudder unlocking fixture, the outer end of the specially designed nut is designed with a hexagonal head for wrench clamping and torque transmission.

[0016] The aforementioned folding rudder unlocking fixture achieves the transmission of a large torque of 500-700N by simply rotating a specially designed nut.

[0017] The advantages of this invention compared to the prior art are:

[0018] (1) The present invention enables the pull rod to move horizontally along the axis in the fixed seat by screwing in a special nut, and drives the locking structure of the external folding rudder surface to open or close by driving the pin, thereby unlocking or locking the external folding rudder surface.

[0019] (2) When rotating the special nut, the present invention achieves the special nut to rotate at a constant angle according to the requirements by means of the threaded engagement between the special nut and the pull rod, thus maintaining different unlocking positions;

[0020] (3) The fixed base of the present invention is provided with a waist-shaped hole inside; the pin is located in the waist-shaped hole, that is, the horizontal movement space of the pin is within the range of the waist-shaped hole, to prevent the pull rod from separating from the fixed base;

[0021] (4) The present invention achieves load reduction and low torque pulling by designing a special nut and the thread pitch of the thread that mates with the pull rod; the outer end of the special nut is designed with a hexagonal head for wrench mounting and torque transmission.

[0022] (5) This invention achieves the transmission of a large torque of 500-700N by simply rotating a specially designed nut. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the folding rudder surface unlocking fixture of the present invention. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] This invention provides a folding rudder unlocking fixture. The pull rod and the fixed seat are clearance fit, and the pin is clearance fit inserted into the pull rod and the product pull bolt hole. The rotational motion is converted into linear motion by a special nut. At the same time, the load is reduced by reasonable pitch design to achieve low torque pulling.

[0026] Folding rudder unlocking fixture, such as Figure 1 As shown, it specifically includes a fixed base 1, a pull rod 2, a pin 3, a special nut 4, and a fixing screw 5.

[0027] The fixed base 1 is horizontally installed on the external folding rudder surface and is fixed to the external folding rudder surface by fixing screws 5. The fixed base 1 has a through hole in the horizontal middle, and the pull rod 2 passes through the through hole horizontally. The special nut 4 is horizontally installed on the outer side wall of the fixed base 1 and is coaxially connected with the pull rod 2. The pull rod 2 has an axially vertical pin hole, and the pin 3 is vertically inserted into the pin hole. The bottom end of the pin 3 passes through the fixed base 1 and is connected to the locking structure of the external folding rudder surface.

[0028] The special nut 4 has a threaded hole at its shaft end. The pull rod 2 is a long cylindrical rod structure machined as a whole; the outer wall of one axial end of the pull rod 2 is provided with a threaded hole, which extends into the threaded hole of the special nut 4 to achieve threaded connection.

[0029] The pin 3 and the pin hole are clearance fit.

[0030] The process of unlocking the tooling is as follows:

[0031] By screwing in the special nut 4, the pull rod 2 can move horizontally along the axis in the fixed seat 1, and the locking structure of the external folding rudder surface can be opened or closed through the pin 3, thereby unlocking or locking the external folding rudder surface.

[0032] When rotating the special nut 4, the threaded engagement between the special nut 4 and the pull rod 2 allows the special nut 4 to rotate at any angle as needed, maintaining different unlocking positions. By designing the pitch of the threads that mate with the pull rod 2, load reduction and low-torque pulling are achieved. The outer end of the special nut 4 is designed with a hexagonal head for wrench clamping and torque transmission.

[0033] The fixed base 1 has an oblong hole inside; the pin 3 is located in the oblong hole, that is, the horizontal movement space of the pin 3 is within the range of the oblong hole, to prevent the pull rod 2 from separating from the fixed base 1.

[0034] A large torque of 500-700N can be transmitted by simply rotating the specially designed nut 4.

[0035] In this invention, a specially designed nut 5 is connected to the pull rod 2 via a thread, converting rotational motion into linear motion. Different torque transmission ratios are achieved by adjusting parameters such as the pull rod thread diameter, pitch, and helix angle. A limit groove is provided between the fixed base and the rudder surface mounting hole. This structure can be unlocked using locking pins, spring-loaded rods, or similar locking mechanisms.

[0036] The mounting base is a machined, integrally formed structure with an internal slotted hole for circumferential limiting and reversing of the pull rod. Mounting and operating holes are located on the upper and lower surfaces for easy operation and installation.

[0037] The tie rod is a long cylindrical rod that is machined as a whole and flattened at both ends, with a pin mounting hole at one end and a thread at the other end;

[0038] The specially designed nut has a threaded inner cavity and a hexagonal head at the end, used for securing wrenches and other workpieces to transmit torque.

[0039] In use, torque is applied to the special nut, and the rotation of the nut drives the lever to move back and forth. The pin on the lever then drives the rudder locking structure to move back and forth, thus unlocking the rudder. Different unlocked positions can be maintained as needed.

[0040] In addition, due to the use of the threaded transmission principle, the unlocking torque is greatly reduced, allowing for operation by a single person and enhancing operational safety.

[0041] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A folding rudder surface unlocking fixture, characterized in that: Includes a fixed base (1), a pull rod (2), a pin (3), a special nut (4), and a fixing screw (5); Among them, the fixed seat (1) is horizontally installed on the external folding rudder surface, and the fixed seat (1) is fixed to the external folding rudder surface by fixing screws (5); the fixed seat (1) has a through hole in the horizontal middle, and the pull rod (2) passes through the through hole horizontally; the special nut (4) is horizontally set on the outer side wall of the fixed seat (1); and the special nut (4) is coaxially connected with the pull rod (2); the pull rod (2) has an axially vertical pin hole, the pin shaft (3) is vertically inserted into the pin hole, and the bottom end of the pin shaft (3) passes through the fixed seat (1) and is connected to the locking structure of the external folding rudder surface; The special nut (4) has a threaded hole at its shaft end; The pin (3) and the pin hole are in clearance fit; The pull rod (2) is a long cylindrical rod structure that is machined as a whole; the outer wall of one end of the pull rod (2) is provided with a threaded hole, which extends into the threaded hole of the special nut (4) to achieve threaded connection; The process of unlocking the tooling is as follows: By screwing in the special nut (4), the pull rod (2) can move horizontally along the axis in the fixed seat (1), and the locking structure of the external folding rudder surface can be opened or closed by the pin (3) to unlock or lock the external folding rudder surface. When rotating the special nut (4), the special nut (4) and the pull rod (2) are threaded together to rotate the special nut (4) at different angles as required, and maintain different unlocking positions. The fixed seat (1) has an oblong hole inside; the pin (3) is located in the oblong hole, that is, the horizontal movement space of the pin (3) is within the range of the oblong hole, to prevent the pull rod (2) from separating from the fixed seat (1); By designing a special nut (4) and a thread pitch that matches the pull rod (2), load reduction and low torque pulling are achieved; The special nut (4) has a hexagonal head at the outer end for wrench mounting and torque transmission. A large torque of 500-700N can be transmitted by simply rotating a specially designed nut (4).

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