Split type self-contraction skin tensioner

Abstract

The utility model belongs to the technical field of aircraft manufacturing and assembling, and particularly relates to a split type self-contraction skin tensioner. The device is composed of a coil spring assembly and a tensioner connecting assembly. The coil spring assembly is composed of a coil spring support, a coil spring, a center shaft and a stop pin, the coil spring support is fixed to the tool framework, self-contraction of the tensioner mainly depends on the automatic reset function of the coil spring, the tensioning belt is wound around the coil spring and rotates around the center shaft, and rotation limiting is achieved at the end of the center shaft through the stop pin; the coil spring is connected with the tensioner connecting assembly through a tensioning belt; the tensioner connecting assembly is composed of a bottom support, a stop plate button, a tensioning wrench, a rotating shaft, a butterfly piece, a torsion spring, a ratchet wheel, an upper baffle, a lower baffle, a compression spring, a center shaft, a stop pin, a tensioning belt and a stop plate. By the adoption of the coil spring device, the self-contraction function can be achieved, and the problem that the tensioning belt is inconvenient to store is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of aircraft manufacturing and assembly, and particularly relates to a split type self-shrinking skin tensioner. BACKGROUND

[0002] In the aircraft manufacturing industry, a wallboard type frame is mainly formed by connecting a skin, a stringer, a frame edge, a compensation sheet and an angle sheet through riveting. During wallboard assembly, the skin needs to be fixed on a clamping plate for subsequent skin hole drilling. The skin tensioner needs to press and tighten the skin to ensure that the skin is attached to the clamping plate and prevent the skin from bulging. The current tensioning belt does not have an automatic shrinking function and is inconvenient to store. A tensioner (publication number: CN202541869U) is disclosed in a Chinese patent, which comprises a casing, left and right side plates arranged on the two sides of the casing, a semicircular shaft penetrating between the left and right side plates, a ratchet penetrating the semicircular shaft, a mountain lock movably connected to the casing and capable of locking the ratchet, a side plate protruding piece connected to the front end of the left and right side plates and capable of pushing open the mountain lock, a handle stop plate movably connected between the left and right side plates, square locks connected to the two ends of the handle stop plate and capable of stopping the ratchet teeth, a handle fixed to the handle stop plate, and two springs symmetrically arranged between the handle stop plate and the middle stop plate. The left and right side plates are connected to handles. However, this tensioner cannot realize the automatic shrinking function. Therefore, it is extremely necessary to research a tensioner that can automatically shrink to press the skin, can ensure assembly accuracy, shorten assembly and disassembly time, and improve assembly efficiency. CONTENT OF THE UTILITY MODEL

[0003] The utility model overcomes the shortage of the prior art and provides a brand-new tensioner. The tensioner realizes installation and fixation on a tooling, reduces assembly error, and ensures consistency with a design reference. Meanwhile, the automatic reset function of the coil spring ensures the self-shrinking requirement of the tensioning belt and solves the problem of inconvenient storage of the tensioning belt.

[0004] TECHNICAL SCHEME: In order to solve the above technical problems, the utility model is achieved by the following technical scheme: a split type self-shrinking skin tensioner, which is composed of a coil spring assembly and a tensioner connecting assembly.

[0005] The coil spring assembly is composed of a coil spring bracket, a coil spring, a center shaft and a stop pin. The coil spring bracket is fixed on a tooling framework. The self-shrinking of the tensioner is mainly realized by the automatic reset function of the coil spring. The tensioning belt is wound on the coil spring and rotates around the center shaft. The end of the center shaft is rotationally limited by the stop pin.

[0006] The coil spring is connected with the tensioner connecting assembly through the tensioning belt; the tensioner connecting assembly is composed of a bottom support, a stop plate button, a tensioning wrench, a rotating shaft, a butterfly piece, a torsion spring, a ratchet wheel, an upper baffle, a lower baffle, a compression spring, a center shaft, a stop pin, the tensioning belt and the stop plate; the bottom support and the tensioning wrench are connected by the rotating shaft, and a gap through which the tensioning belt can pass is arranged in the middle of the rotating shaft; the upper baffle is arranged on the tensioning wrench, and one end of the upper baffle can abut against the ratchet wheel tooth; the lower baffle is arranged on the bottom support, and one end of the lower baffle can also abut against the ratchet wheel tooth; the tensioning belt is wound on the coil spring; the tensioning wrench can rotate along the rotating shaft; when the upper baffle is pulled upwards, the tensioning wrench is pulled back and forth to the left and right, the ratchet wheel is rotated, the rotating shaft is driven to rotate, the tensioning belt is gradually wound on the rotating shaft, and the tensioner locking function is realized; when the tensioning wrench is continuously rotated backwards until the tensioning wrench is parallel to the bottom support, the butterfly pieces at the two ends of the rotating ratchet wheel are rotated, the tensioning belt cannot be wound on the rotating shaft, and the tensioning belt can be freely pulled out; the stop plate button is pressed downwards, the stop plate is lifted, and the tensioning belt can realize the self-shrinking function under the automatic reset function of the coil spring.

[0007] Further, the bottom support is of a frame type structure, the front end is smaller, and the rear end is larger.

[0008] Further, the bottom support is composed of two plates, the larger end is sleeved with the rotating shaft, and the smaller end is connected through a connecting rod.

[0009] Further, the tail end of the tensioning wrench is provided with a handle.

[0010] Further, the middle part of the tensioning wrench is further provided with a connecting shaft.

[0011] Further, the coil spring support is of a triangular support frame structure.

[0012] Technical effects: the self-shrinking tensioner has the following beneficial effects: (1) the coil spring device can realize the self-shrinking function; (2) the stop plate is arranged on the bottom support, and the tensioning belt can be effectively prevented from being separated in the working process; (3) the product is of a split type, and is convenient to install on various toolings for use. DRAWINGS

[0013] The utility model includes two drawings, and the drawings and the drawing description are as follows:

[0014] Figure 1 It is a self-shrinking tensioner structure schematic view;

[0015] Figure 2 It is a tensioner connecting assembly partial schematic view;

[0016] Wherein: 1. Coil spring support, 2. Coil spring, 3. Bottom support, 4. Stop plate button, 5. Tensioning wrench, 6. Rotary shaft, 7. Butterfly, 8. Torsion spring, 9. Ratchet, 10. Upper baffle, 11. Lower baffle, 12. Compression spring, 13. Center shaft, 14. Stop pin, 15. Tensioning belt, 16. Stop plate. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the utility model is described in detail below in combination with the drawings or specific implementation cases, and it should be noted that some (but not all) of the disclosed examples are shown in the drawings. In fact, many different examples can be described and these examples should not be understood as being limited to the examples set forth herein. On the contrary, these examples are described so that the positive effects of the utility model are more embodied, and the details not described herein are regarded as known technology or conventional technology means in the art.

[0018] Referring to the drawings Figure 1 , 2 , the device comprises a coil spring assembly and a tensioner connecting assembly, the coil spring assembly is fixed on a tool frame, the coil spring 2 is wound on the center shaft 13, the tensioning belt 15 is wound on the coil spring 2 and rotates around the center shaft 13, the coil spring 2 has an automatic reset function, the tensioner can be self-contracted, and the coil spring is connected with the tensioner connecting assembly through the tensioning belt. The bottom support 3 of the tensioner connecting assembly is connected with the tensioning wrench 5 through the rotary shaft 6, a gap through which the tensioning belt can pass is arranged in the middle of the rotary shaft, ratchets 9 are arranged at both ends of the rotary shaft, butterfly plates 7 that can rotate the ratchets are further arranged at both ends of the ratchets, the stop plate 14 and the lower baffle 11 are arranged on the bottom support, and the upper baffle 10 is arranged on the tensioning wrench 5. One end of the upper baffle 10 can abut against the ratchet teeth, one end of the lower baffle 11 can also abut against the ratchet teeth, the tensioning wrench 5 can rotate along the rotary shaft 6, when the upper baffle is pulled upwards, the tensioning wrench 5 can rotate freely along the rotary shaft 6, when the upper baffle abuts against the ratchet, the tensioning wrench is pulled to the right, the ratchet rotates, the rotary shaft rotates, the tensioning belt 15 is wound on the rotary shaft, the tensioning wrench is pulled back and forth, the tensioning belt is continuously wound on the rotary shaft, and the locking function can be realized, when the tensioning wrench 5 rotates to the right until the tensioning wrench is parallel to the bottom support, the butterfly plates 7 at both ends of the ratchet are rotated, so that the tensioning belt 15 cannot be wound on the rotary shaft 6, at this time, the tensioning belt can be freely pulled out, the stop plate button 4 is pressed downwards, the stop plate 16 is lifted, and the tensioning belt 15 can realize the self-contracting function of the tensioner under the automatic reset function of the coil spring 2.

[0019] The utility model realizes the installation and fixation of products on tooling, reduces assembly error, can guarantee assembly accuracy, shortens assembly and disassembly time, and improves assembly efficiency. Meanwhile, the automatic reset function of the coil spring ensures the self-contracting requirement of the tensioning belt, and solves the problem of inconvenient storage of the tensioning belt.

[0020] The above specific embodiments or cases are only used to explain and illustrate the technical solutions of the present application, and are not intended to limit the present application. The parts not described in detail are regarded as conventional technical means or common knowledge in the art. It can be understood by those skilled in the art that: based on the design idea of the present application, the technical solutions recorded in the foregoing embodiments can be modified adaptively, or some or all of the technical features can be replaced equivalently. The modified, equivalent, adaptive improved technical solutions do not deviate from the technical essence of the present application, and should be covered within the protection scope of the present application.

Claims

1. A split self-shrinking skin tensioner characterized by, It is composed of a coil spring assembly and a tensioner connecting assembly. The coil spring assembly is composed of a coil spring support, a coil spring, a center shaft and a stop pin. The coil spring is connected with the tensioner connecting assembly through a tension belt.

2. A split self-shrinking skin tensioner as in claim 1, wherein, The tensioner connecting assembly is composed of a bottom support, a stop plate button, a tension wrench, a rotating shaft, a butterfly piece, a torsion spring, a ratchet, an upper baffle, a lower baffle, a compression spring, a center shaft, a stop pin, a tension belt and a stop plate.

3. A split self-shrinking skin tensioner as in claim 2, wherein, The bottom support and the tension wrench are connected by the rotating shaft, and the rotating shaft is provided with a gap through which the tension belt can pass.

4. A split self-shrinking skin tensioner as in claim 1, wherein, The upper baffle is arranged on the tension wrench, and one end of the upper baffle can abut against the ratchet tooth.

5. A split self-shrinking skin tensioner as in claim 1, wherein, The lower baffle is arranged on the bottom support, and one end of the lower baffle abuts against the ratchet tooth.

6. A split self-shrinking skin tensioner as in claim 1, wherein, The tension belt is wound around the coil spring. The tension wrench can rotate along the rotating shaft. When the upper baffle is pulled upward, the tension wrench is pulled back and forth to the left and right. The ratchet rotates to drive the rotating shaft to rotate. The tension belt is gradually wound around the rotating shaft to realize the locking function of the tensioner. When the tension wrench is continuously rotated backward until it is parallel to the bottom support, the butterfly pieces at both ends of the ratchet are rotated to prevent the tension belt from being wound around the rotating shaft. The tension belt can be freely pulled out. The stop plate button is pressed downward to lift the stop plate. Under the automatic reset function of the coil spring, the tension belt can realize the self-retraction function. The bottom support has a frame structure with a small front end and a large rear end. The bottom support is composed of two plates, one end of which is sleeved with the rotating shaft, and the other end is connected by a connecting rod. The tail end of the tension wrench is provided with a handle. The middle part of the tension wrench is further provided with a connecting shaft. The coil spring support adopts a triangular support structure.

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