Aviation steel cable pre-tension debugging device

Abstract

The utility model discloses an aviation steel cable pre-tension debugging device which comprises an annular handle, an opening is formed in one side of the annular handle, bolt holes are formed in the two sides, adjacent to the opening, of the annular handle, locking bolts are arranged in the bolt holes, one end of each locking bolt is fixedly provided with a bolt head, and the other end of each locking bolt is provided with a nut. The end, away from the bolt head, of the locking bolt is fixedly connected with a locking thin rod, and a safety welding ring is arranged on the locking bolt. The locking slender rod can be connected with the elastic thread sleeve, a user can adjust tension by rotating the annular handle, and the problems that the space in a working cabin of an aircraft is narrow, operation is inconvenient, and maintenance errors are prone to being caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel cable tension adjustment, in particular to an aviation steel cable pre-tension debugging device. Background Technique

[0002] In the flight control system, landing gear retraction system, nose wheel steering system and early engine control system of modern aircraft, the signal transmission methods include mechanical transmission, electrical signal transmission, optical fiber transmission and their combined forms. Mechanical transmission is further divided into flexible transmission and rigid transmission. Among them, flexible transmission is mainly based on steel cables, and rigid transmission is mainly based on rigid rods. Due to the large volume and weight of rigid transmission, it is difficult to be flexibly arranged in an aircraft and is only used in some local areas. In contrast, flexible transmission has the advantages of flexibly passing through all corners of the aircraft, light weight and small volume. In addition, compared with electrical signal transmission and optical fiber transmission, flexible (steel cable) transmission has stronger viability, so the flexible (steel cable) transmission system is still retained in modern aircraft.

[0003] In order to ensure the stable transmission of signals, the steel cable tension must be maintained within an appropriate range. Excessive tension will cause excessive wear of the steel cable, pulley and sector plate. The steel cable is easy to wear and break, and it is difficult for the pilot to operate; while too small tension is likely to cause slipping between the steel cable, pulley and sector plate, and the system deviates from the neutral position. Therefore, in daily aircraft maintenance, it is necessary to regularly calibrate the steel cable tension value.

[0004] At present, the principle of adjusting the pre-tension of the steel cable is achieved by using a tool to rotate the turnbuckle. Both ends of the turnbuckle are sleeves with opposite internal threads (connected to the screw-type steel cable joint here), and the middle is a hole for inserting a rotating tool. A groove or knurling is engraved on the outside of one end of the left thread of the sleeve. By rotating the sleeve, the two screws can be simultaneously retracted or extended to tighten or loosen the steel cable.

[0005] In the prior art, for example, an aviation steel cable pre-tension debugging device with the patent number 202320776043.3 is extremely easy to open during the rotation process of the first hoop body and the second hoop body during use, which is extremely inconvenient to use and prone to maintenance errors. Content of the Utility Model

[0006] The purpose of the utility model is to provide an aviation steel cable pre-tension debugging device to solve the problems put forward in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An aviation cable pre-tension debugging device, including a ring handle, one side of the ring handle is provided with an opening, and two sides of the ring handle adjacent to the opening are provided with bolt holes. Locking bolts are provided on the bolt holes, one end of the locking bolt is fixedly provided with a bolt head, the end of the locking bolt away from the bolt head is fixedly connected to a locking thin rod, and a safety welding ring is provided on the locking bolt.

[0008] Preferably, the ring handle is an integrated regular hexagon, and the outer surface of the ring handle is processed with friction textures.

[0009] Preferably, the diameter of the locking thin rod is smaller than the diameter of the adjusting hole of the turnbuckle.

[0010] Compared with the prior art, the beneficial effect of the present utility model is that the locking thin rod can be connected to the turnbuckle, and the user can adjust the tension by rotating the ring handle, solving the problems of narrow space, inconvenient operation and easy occurrence of maintenance errors in the working cabin of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the overall structural schematic diagram of the present utility model;

[0012] Figure 2 is the structural schematic diagram of the outer surface of the ring handle of the present utility model.

[0013] In the figure: 1, ring handle; 2, opening; 3, bolt head; 4, locking thin rod; 5, locking bolt; 6, safety welding ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative changes belong to the scope of protection of the present utility model.

[0015] Please refer to Figure 1 and Figure 2 , an embodiment provided by the present utility model: An aviation cable pre-tension debugging device, including a ring handle 1, an opening 2 is provided on one side of the ring handle 1, bolt holes are provided on two sides of the ring handle 1 adjacent to the opening 2, a locking bolt 5 is provided on the bolt holes, a bolt head 3 is fixedly provided at one end of the locking bolt 5, the end of the locking bolt 5 away from the bolt head 3 is fixedly connected to a locking thin rod 4, and a safety welding ring 6 is provided on the locking bolt 5. This device is used in cooperation with the turnbuckle in the prior art. The turnbuckle enters the inside of the ring handle 1 from the opening 2, and the locking thin rod 4 is used to fix the turnbuckle, and the cable tension is adjusted by rotating the ring handle 1.

[0016] The diameter of the locking thin rod 4 is smaller than the diameter of the adjusting hole of the loose and tight bushing, which is convenient for connecting the locking thin rod 4 with the loose and tight bushing to fix the loose and tight bushing.

[0017] Working principle: When in use, first screw out the two locking bolts 5 to the position limited by the safety welding ring 6 to provide space for the loose and tight bushing; put this tool on the loose and tight bushing through the opening 2 on the annular handle 1; adjust the position of this tool so that the axis of the rotary tool insertion hole in the middle of the loose and tight bushing is aligned with the locking thin rod 4; tighten the locking bolts 5 to ensure that the locking thin rod 4 is firmly and tightly combined with the rotary tool insertion hole in the middle of the loose and tight bushing, and then the loose and tight bushing can be rotated to debug the pre-tension of the aircraft cable. When removing, the locking bolts 5 can be loosened so that the locking thin rod 4 completely withdraws from the rotary tool insertion hole on the loose and tight bushing to complete the removal action, which can be completed with one hand operation, effectively solving the problems of narrow space and inconvenient operation in the aircraft working cabin.

Claims

1. An aviation cable pre-tension debugging device, comprising an annular handle (1), characterized in that: One side of the annular handle (1) is provided with an opening (2). Two sides of the annular handle (1) adjacent to the opening (2) are provided with bolt holes, and locking bolts (5) are arranged on the bolt holes. One end of the locking bolt (5) is fixedly provided with a bolt head (3), the end of the locking bolt (5) away from the bolt head (3) is fixedly connected with a locking thin rod (4), and a safety welding ring (6) is arranged on the locking bolt (5).

2. The pre-tension debugging device for an aviation cable according to claim 1, wherein: The annular handle (1) is an integral regular hexagon, and the outer surface of the annular handle (1) is processed with friction textures.

3. A pre-tension debugging device for an aviation cable according to claim 1, characterized in that: The diameter of the locking thin rod (4) is smaller than the diameter of the adjusting hole of the loose and tight sleeve.

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