Application of labor-saving method to special aviation tool

Abstract

The invention relates to application of a labor-saving method to a special aviation tool, which comprises a fixed plier body, a movable plier body, a first pin shaft, a second pin shaft, a first gear, a second gear, a first clamp spring and a second clamp spring, and is characterized in that the movable plier body is divided into a movable plier head and a movable handle, and the second gear is arranged at one end, close to the movable plier head, of the movable handle; the tail end of the movable tong head is provided with a first gear module consistent with a second gear module of the movable handle, the movable tong head is connected with the fixed tong body through a first pin shaft, the movable handle is connected with the fixed tong body through a second pin shaft, and when the movable handle rotates around the second pin shaft, the movable handle drives the first gear of the movable tong head through the second gear; and the length of the movable handle is larger than the radius of the second gear, and the number of teeth of the first gear is larger than the number of teeth of the second gear, so that the mechanism is labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of manual tools, and particularly to the application of a labor-saving method to aviation special tools. Background Art

[0002] With the development of aerospace, the corresponding supporting maintenance and assembly tools are also gradually updated. According to an existing insurance pliers, its structure is redesigned to achieve a labor-saving function while ensuring little change in volume. The solution is to connect the movable handle and the movable jaw through a gear transmission method to achieve labor saving. Summary of the Invention

[0003] In order to make up for the deficiencies of the prior art, the present invention provides a labor-saving clamping method to solve the problem of small clamping force of ordinary insurance pliers.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: The application of a labor-saving method to aviation special tools, including a fixed jaw body and a movable jaw body. The movable jaw body is divided into a movable jaw head and a movable handle. The second gear on the movable handle meshes with the first gear on the movable jaw body. When the movable handle rotates, the movable handle drives the gear of the movable jaw body to rotate through the second gear, so that the movable jaw head rotates, and the movable jaw head closes towards the fixed jaw body to achieve clamping. The number of teeth of the gear of the movable handle is less than that of the gear of the movable jaw body, so this structure can improve the clamping force.

[0005] The fixed jaw body includes an integrally formed fixed jaw head and a fixed handle. The fixed jaw body is connected to the movable jaw head through a first pin shaft, and the fixed handle is connected to the movable handle through a second pin shaft. A long groove is opened in the middle of the front end of the fixed jaw body, and two pin holes are provided on the long groove for installing the first pin shaft and the second pin shaft. A protrusion that can cooperate with the long groove of the fixed jaw body is provided in the middle of the movable jaw head, and a first gear is provided at the tail, and a pin hole is machined at the center of the gear rotation for installing the first pin shaft. The first gear meshes with the second gear of the movable handle. A protrusion that can cooperate with the long groove of the fixed jaw body is provided at the rotation center of the second gear of the movable handle, and a pin hole is machined for installing the second pin shaft.

[0006] The length of the movable handle is much larger than the radius length of the second gear.

[0007] The first pin shaft and the second pin shaft are respectively fastened by a first circlip and a second circlip.

[0008] The present invention adopts the above - mentioned solution and has the following beneficial effects: By dividing the movable jaw body into two parts, namely a movable jaw head and a movable handle, a second gear is provided at the front end of the movable handle, and a first gear that mates with the gear of the movable handle is provided at the tail end of the movable jaw head. When the movable handle rotates around the second pin shaft, the first gear of the movable jaw head is driven by the second gear, causing the movable jaw head to rotate around the first pin shaft, thereby achieving clamping. The design of the present invention is reasonable, easy to manufacture, and can achieve the function of labor - saving clamping.

[0009] Figure 1 is a schematic structural view of the present invention.

[0010] Figure 2 is a schematic structural view of the fixed jaw body of the present invention.

[0011] Figure 3 is a schematic view of the dimensions of the labor - saving structure.

[0012] Figure 4 is a schematic structural view of the movable handle of the present invention.

[0013] Figure 5 is a schematic structural view of the movable jaw body of the present invention.

[0014] Figure 6 is a schematic view of the dimensions of the ordinary structure.

[0015] In the figures, 1, fixed jaw head; 2, fixed handle; 3, movable jaw head; 4, movable handle; 5, first pin shaft; 6, second pin shaft; 7, first gear; 8, second gear; 9, first circlip; 10, second circlip. Specific embodiments

[0016] To clearly illustrate the technical features of the present solution, the present invention will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings. As shown in Figures 1 - 6, the application of a labor - saving method to an aviation - specific tool includes a fixed jaw body and a movable jaw body. By dividing the movable jaw body into two parts, namely a movable jaw head 3 and a movable handle 4, a second gear 8 is provided at one end of the movable handle 4 close to the movable jaw head 3, and a first gear 7 that mates with the second gear 8 is provided at the tail end of the movable jaw head 3. When the movable handle 4 rotates, the movable handle 4 drives the first gear 7 to rotate through the second gear 8, thereby causing the movable jaw head 3 to rotate. The movable jaw head 3 closes towards the fixed jaw body to achieve clamping. The number of teeth of the second gear 8 is less than that of the first gear 7 to achieve labor - saving.

[0017] The fixed jaw body includes an integrally formed fixed jaw head 1 and a fixed handle 2. The fixed jaw head 1 cooperates with the movable jaw head 3 to achieve clamping.

[0018] The fixed jaw 1 and the movable jaw 3 are connected by a first pin shaft 6, and the fixed handle 2 and the movable handle 4 are connected by a second pin shaft 7.

[0019] A long groove is formed in the middle of the front end of the fixed jaw 1, and two pin holes are arranged on the long groove for installing the first pin shaft 6 and the second pin shaft 7.

[0020] A protrusion that can cooperate with the long groove of the fixed jaw 1 is arranged in the middle of the movable jaw 3, and a pin hole is machined for installing the first pin shaft 6. The first gear 7 is arranged at the tail end of the movable jaw 3 and meshes with the second gear 8.

[0021] A protrusion that can cooperate with the long groove of the fixed jaw 1 is arranged at the rotation center of the second gear 8, and a pin hole is machined for installing the second pin shaft 7.

[0022] The length of the movable handle 4 is much larger than the radius length of the second gear 8, and the radius length of the second gear 8 is larger than the radius length of the first gear 7. Therefore, labor-saving clamping can be achieved during use.

[0023] The first pin shaft 6 and the second pin shaft 7 are respectively fastened by a first circlip 11 and a second circlip 12.

[0024] Working principle: During use, rotate the movable handle 4. The movable handle 4 rotates around the second pin shaft 6 and drives the second gear 8 to rotate at the same time. The second gear 8 drives the first gear 7 to make the movable jaw 3 rotate around the first pin shaft 5, so that the fixed jaw 1 and the movable jaw 3 are closed to achieve clamping. Since the length of the movable handle 4 is much larger than the radius of the second gear 8 and the radius of the second gear 8 is smaller than the radius of the first gear 7, this structure can achieve labor-saving clamping during use.

[0025] For specific labor-saving data, with the total length unchanged, when the jaw length is set to 70 mm, the pitch circle radius of the first gear is 24, and the radius of the second gear is 16, the handle force arm length is drawn to be 258 mm through drawing. In the case of the same jaw length and total length, for an ordinary tool with a single-rotating shaft articulated clamp, the handle force arm length is 297 mm. Let the clamping force be F1, the applied driving force be F2, the handle force arm be L1, and the jaw length be L2.

[0026] Thus, the labor-saving scheme formula can be obtained; F1 = F2 * 258 / 16 * 24 / 70 F1 = 5.529F2 Ordinary scheme formula; F1 = F2 * 297 / 70 F1 = 4.243F2 (5.529F2 - 4.243F2) / 4.243F2 = 0.303 It can be concluded from this that the labor-saving solution can save about 30% more labor than the ordinary solution.

[0027] The above specific implementation manners cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art of this technology, any alternative improvement or transformation made to the implementation manners of the present invention falls within the protection scope of the present invention.

[0028] Those not elaborated in the present invention are all well-known technologies to those skilled in the art of this technology.

Claims

1. Application of a labor-saving method to aviation special tools, including a fixed jaw body, a movable jaw body, a first pin shaft, a second pin shaft, a first gear, a second gear, a first circlip, and a second circlip, characterized in that: The movable jaw body is divided into two parts: a movable jaw head and a movable handle. A second gear is provided at one end of the movable handle close to the movable jaw head. The modulus of the first gear provided at the tail end of the movable jaw head is the same as that of the second gear of the movable handle. When the movable handle rotates around the second pin shaft, the movable handle drives the first gear of the movable jaw head through the second gear, so that the movable jaw head rotates around the first pin shaft, and the movable jaw head closes towards the fixed jaw body to achieve clamping. The number of teeth of the first gear is greater than that of the second gear to achieve labor saving.

2. Application of a labor-saving method according to claim 1 to an aviation special tool, characterized in that: The fixed jaw body includes a fixed jaw head and a fixed handle integrally formed.

3. Application of a labor-saving method according to claim 2 to an aviation special tool, characterized in that: The fixed jaw head is connected to the movable jaw head through a first pin shaft, and the fixed handle is connected to the movable handle through a second pin shaft.

4. Application of a labor-saving method according to claim 3 to an aviation special tool, characterized in that: A long groove is formed in the middle of the front end of the fixed jaw head, and two pin holes are provided on the long groove for installing the first pin shaft and the second pin shaft.

5. Application of a labor-saving method according to claim 3 to an aviation special tool, characterized in that: A first gear is provided at the tail end of the movable jaw head and meshes with the second gear of the movable handle. A protrusion that can cooperate with the long groove of the fixed jaw head is provided at the rotation center of the first gear of the movable jaw head, and a pin hole is machined for installing the first pin shaft.

6. Application of a labor-saving method according to claim 3 to an aviation special tool, characterized in that: A protrusion that can cooperate with the long groove of the fixed jaw head is provided at the rotation center of the second gear of the movable handle, and a pin hole is machined for installing the second pin shaft.

7. Application of a labor-saving method according to claim 1 to aviation special tools, characterized in that: The length of the movable handle is much greater than the radius length of the second gear.

8. Application of a labor-saving method according to claim 3 to an aviation special tool, characterized in that: The first pin shaft and the second pin shaft are respectively fastened by a first circlip and a second circlip.

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