Combined locking and fixing structure for replaceable modules of helicopter

Abstract

The utility model relates to the technical field of aerospace, in particular to a combined locking and fixing structure for a replaceable module of a helicopter, which comprises a base and a torsion spring, the torsion spring is fixed on the base through a screw, one end of the torsion spring abuts against the base, and the replaceable module can be mounted on or dismounted from the base; the locking strips are installed on the base and distributed on the two sides of the base, a fixing pin is assembled at one end of each locking strip, an extraction tool is assembled on each fixing pin, the other end of each torsional spring abuts against the corresponding extraction tool, and the extraction tools can rotate with the fixing pins as the centers. The combined locking and fixing structure for the replaceable module of the helicopter can meet the requirement for rapid replacement of the module, and due to the design of combined parts, the thickness of the module is reduced, and therefore the weight of the module is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aerospace, and in particular to a combined locking and fixing structure for replaceable modules of helicopters. Background Art

[0002] At present, the internal structure of helicopters is gradually developing in the direction of modularization and rapid replacement. In order to meet such requirements, some modules use a combination of locking strips and pullers to achieve rapid replacement needs.

[0003] Since most of the locking strips on the market currently require tools to adjust the tightness, it is more troublesome to disassemble and assemble the module. Since tools are required when disassembling and assembling the locking strip, the puller cannot be installed on the same structural surface as the locking strip, which invisibly increases the thickness of the module, and the weight of the module also increases accordingly. Therefore, a combined locking and fixing structure for replaceable modules of a helicopter is needed to solve the above problems. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a combined locking and fixing structure for a replaceable module of a helicopter. In order to solve the problem that the module can be quickly replaced without tools, a combined structural design method is now adopted, that is, the puller and the locking strip are combined into a whole. The tightness of the locking strip is no longer dependent on the tool, but only the puller is used. The looseness and tightness of the locking strip can be controlled by rotating it.

[0005] The utility model is implemented as follows: a combined locking and fixing structure for a replaceable module of a helicopter includes: a base and a torsion spring, wherein the torsion spring is fixed to the base by a screw, one end of the torsion spring is pressed against the base, and the replaceable module can be installed or removed on the base; a locking strip, which is installed on the base and distributed on both sides of the base, one end of the locking strip is equipped with a fixing pin, and a puller is equipped on the fixing pin, and the other end of the torsion spring is pressed against the puller, and the puller can rotate around the fixing pin.

[0006] Preferably, the locking strip comprises: a wedge-shaped fast, of which there are multiple ones, the end wedge-shaped fast is fixed on the base, multiple studs pass through the wedge-shaped fasts, a fixing pin is assembled at the head end of the stud, and the puller rotates around the fixing pin to push the wedge-shaped fast to move so as to fix the replaceable module on the base.

[0007] Preferably, the shape of the end of the puller is rectangular, so as to ensure that the rotation of the puller can smoothly push the wedge block of the locking strip to move so as to fasten the replaceable module.

[0008] Preferably, the end of the stud is in a rectangular shape to facilitate assembly of the fixing pin and the stud.

[0009] The combined locking and fixing structure for replaceable modules of a helicopter provided by the utility model can meet the requirements of rapid replacement of modules, and due to the combined parts design, the thickness of the module is reduced, thereby also reducing the weight of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a front schematic diagram of the combined locking and fixing structure for replaceable modules in helicopters.

[0011] Figure 2 This is a schematic diagram of the back side of the combined locking and fixing structure for the replaceable module of the helicopter.

[0012] Figure 3 Schematic diagram of the locking strip and puller of the combined locking and fixing structure for the replaceable module of a helicopter.

[0013] Figure 4 Schematic diagram of the torsion spring of the combined locking and fixing structure for the replaceable module of the helicopter.

[0014] In the attached drawings: 1-base, 2-torsion spring, 3-locking strip, 4-fixing pin, 5-puller, 31-wedge fastener, 32-stud. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and do not limit the utility model.

[0016] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0017] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a combined locking and fixing structure for a helicopter replaceable module, and the combined locking and fixing structure for a helicopter replaceable module includes:

[0018] A base 1 and a torsion spring 2, wherein the torsion spring 2 is fixed to the base 1 by screws, one end of the torsion spring 2 is pressed against the base 1, and the replaceable module can be installed or removed on the base 1; a locking strip 3, which is installed on the base 1 and distributed on both sides of the base 1, one end of the locking strip 3 is equipped with a fixing pin 4, and the fixing pin 4 is equipped with a puller 5, the other end of the torsion spring 2 is pressed against the puller 5, and the puller 5 can rotate with the fixing pin 4 as the center.

[0019] like Figure 1As shown, as a preferred embodiment of the utility model, the locking strip 3 includes: a wedge-shaped fast 31, which is provided in plurality, the end wedge-shaped fast 31 is fixed on the base 1, a plurality of the wedge-shaped fasts 31 pass through studs 32, a fixing pin 4 is assembled at the head end of the stud 32, and the puller 5 rotates around the fixing pin 4 to push the wedge-shaped fast 31 to move so as to fix the replaceable module on the base 1.

[0020] like Figure 1 As shown, as a preferred embodiment of the utility model, the end of the puller 5 is in a rectangular shape, which is used to ensure that the rotation of the puller 5 can smoothly push the wedge block 31 of the locking strip 3 to move to fasten the replaceable module.

[0021] like Figure 3 As shown, as a preferred embodiment of the present utility model, the shape of the end of the stud 32 is rectangular, which is used to facilitate the assembly of the fixing pin 4 and the stud 32.

[0022] The puller 5 and the stud 32 are connected together by a fixing pin 4, so that the puller 5 can rotate stably. The end of the puller 5 is designed to be rectangular. When the puller 5 is rotated, the rectangular protrusion at the end of the puller 5 will push the wedge block 31 of the locking strip 3 to move it, thereby achieving the effect of fastening the replaceable module.

[0023] The torsion spring 2 is externally arranged and fixed on the base 1, so as to achieve the effect of external spring; in order to facilitate the assembly of the stud 32 and the fixing pin 4, the stud 32 is changed into a rectangular shape, which is more conducive to the assembly of the fixing pin 4 and reduces the longitudinal dimension.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined locking and fixing structure for a replaceable module of a helicopter, comprising a base and a torsion spring, characterized in that: The torsion spring is fixed to the base by screws, one end of the torsion spring is pressed against the base, and the replaceable module can be installed or removed on the base; The locking strip is installed on the base and distributed on both sides of the base. One end of the locking strip is equipped with a fixing pin, and a puller is equipped on the fixing pin. The other end of the torsion spring presses against the puller, and the puller can rotate with the fixing pin as the center.

2. The combined locking and fixing structure for replaceable modules of a helicopter according to claim 1, characterized in that: The locking strip comprises: There are multiple wedge-shaped fasteners, with the end wedge-shaped fasteners fixed on the base. Studs pass through the multiple wedge-shaped fasteners, and the fixing pins are assembled on the head ends of the studs. The puller rotates around the fixing pins to push the wedge-shaped fasteners to move so as to fix the replaceable module on the base.

3. The combined locking and fixing structure for replaceable modules of a helicopter according to claim 1, characterized in that: The shape of the end of the puller is rectangular, which is used to ensure that the rotation of the puller can smoothly push the wedge block of the locking strip to move so as to fasten the replaceable module.

4. The combined locking and fixing structure for replaceable modules of a helicopter according to claim 2, characterized in that: The shape of the end of the stud is rectangular, which is used to facilitate the assembly of the fixing pin and the stud.

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