Pedal neutral state fixing device

Abstract

The utility model belongs to the technical field of aircraft assembly and adjustment in the aviation technology, and relates to a pedal neutral state fixing device. Comprising a support and a threaded pipe sleeve. The left pedal and the right pedal are fixed at the same time through the adjusting holes in the fan-shaped pieces of the left pedal and the right pedal, the neutral horizontal state (0 + / -0.5 mm) of the pedals is kept, and the device is easy to manufacture, low in cost, convenient to disassemble and assemble, easy to operate, free of damage to part structures, free of influence on other professional operation, free of distinguishing between the assembled left pedal and the assembled right pedal and good in interchangeability. Repeated coordination work can be greatly reduced, and working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation technology, aircraft assembly and adjustment, and relates to a pedal neutral state fixing device. Background Art

[0002] The pedal neutral state requires the installation and positioning of the transmission rod between the left and right pedals and a technical state when the rudder system is adjusted; currently, in the existing pedal neutral state (when the system is not connected), it is necessary to check the neutral data of the four pedal plates on the left and right foot control consoles to ensure that the four pedal plates on the left and right foot control consoles are neutral within the range of 0±1mm (this is an assembly requirement, and the technical requirement for the front and rear error of the left and right pedals is 0±3mm). Only in this state can the transmission rod installed between the left and right foot control consoles be positioned and marked. This work requires three people to perform at the same time, and two people must repeatedly check the left and right foot control consoles at the same time. For the neutral state of the pedal, a third person will mark the transmission rod after the neutral state is determined. Because the pedal is a transmission mechanism and there are bearings between the connections, the pedal is relatively flexible. If the transmission rod between the left and right foot control consoles is positioned wrongly by 1mm, the neutral position of the left and right pedals will be misaligned by 3-6mm after installation. When adjusting the system, the pedal neutral state must be adjusted when the rudder is neutral. One person measures the neutral state of the left and right foot control consoles (technical requirements are 0±3mm), and the other person performs the pull rod adjustment check under the floor. This work needs to be repeated many times before it can be adjusted into place. Utility Model Content

[0003] Purpose of the utility model

[0004] The utility model overcomes the shortcomings of the prior art and provides a fixing device which does not require repeated adjustment, measurement or inspection of the neutral state of the pedal plate, is easy to assemble and disassemble, and can be accurately positioned.

[0005] Technical Solution

[0006] like Figure 1 As shown, a pedal neutral state fixing device is provided, including a bracket 1 and a threaded sleeve 3; the bracket 1 includes a base and a boss, the base and the boss are welded as one, a positioning pin 11 is provided on the base, the positioning pin 11 is used to cooperate with the fan-shaped adjustment hole of the pedal, the boss is a cylindrical step, the large cylindrical section is a smooth plane, and the small cylindrical section is a threaded section, the threaded sleeve 3 is symmetrically distributed with step holes, the large step hole is used to guide the large cylindrical section, and the small step hole is used to screw with the threaded section, the brackets 1 are two symmetrical to each other, respectively connected to the two ends of the threaded sleeve 3, and the threaded sections of the two brackets 1 are opposite to each other.

[0007] Furthermore, it also includes a rotating rod 4, which passes through the threaded sleeve 3 and is used to assist in applying force when the threaded sleeve 3 rotates.

[0008] Furthermore, the rotating rod 4 passes through the middle position of the threaded sleeve 3, so that the force is applied more evenly.

[0009] Furthermore, the number of the positioning pins 11 is at least 2, which match the shape of the adjustment hole of the pedal sector.

[0010] Furthermore, the bracket 1 and the threaded pipe sleeve 3 are both made of 45 steel.

[0011] Furthermore, the base of the bracket 1 is chamfered around four sides to avoid interference with parts.

[0012] Furthermore, an arc-shaped cutout is provided on one side of the base close to the pedal fan-shaped part to avoid interference with the pedal fan-shaped part.

[0013] The beneficial effects of this application are:

[0014] The utility model provides a fixing device that simultaneously fixes both footrests by utilizing adjustment holes on the left and right footrest fan-shaped members, maintaining the footrests in a neutral and horizontal state (0±0.5mm). This device is simple to manufacture, low in cost, easy to assemble and disassemble, simple to operate, does not damage the component structure, and does not affect other professional operations. The assembled device is not distinguished between left and right, and has good interchangeability. It can greatly reduce repetitive coordination work and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the pedal neutral state fixing device;

[0016] Including: 1. Bracket, 3. Threaded sleeve, 4. Rotating rod

[0017] Figure 2 Schematic diagram of bracket 1;

[0018] Figure 3 Schematic diagram of threaded casing;

[0019] Figure 4 Schematic diagram of the fixture onboard installation. DETAILED DESCRIPTION

[0020] The present invention is further described below with reference to the following embodiments. The following are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Figure 2 In the middle, 11. Positioning pin, positioning pin height H, center distance L, 12. Left-hand thread shaft, boss large cylindrical section 12 diameter D1, boss small cylindrical section 13 are left-hand and right-hand threads respectively;

[0022] Figure 3 In the middle, the large step hole A at both ends has a diameter of D2, D2 is larger than D1, and the small step hole B has left-hand and right-hand threads respectively;

[0023] Figure 4 C. Left pedal, D. Right pedal, E. Adjustment hole, F. Pedal neutral state fixing device, G. Fan-shaped part; (left-right symmetrical, interchangeable, only right part is shown), including bracket 1, bracket 2, threaded sleeve 3, and rotating rod 4.

[0024] Bracket 1 (such as Figure 2 ), the two locating pins on the bracket match the two adjustment holes on the left pedal fan-shaped part, the diameter of the locating pins is smaller than the diameter of the adjustment holes, the height H is smaller than the depth of the adjustment holes, and the center distance L of the locating pins is the same as the spacing between the adjustment holes.

[0025] Bracket 2 (such as Figure 3 ), the two locating pins on the bracket match the two adjustment holes on the right pedal fan-shaped part, the diameter of the locating pins is smaller than the diameter of the adjustment holes, the height H is smaller than the depth of the adjustment holes, and the center distance L of the locating pins is the same as the spacing between the adjustment holes.

[0026] The diameter D2 of the hollow tube of the threaded sleeve 3 is larger than the diameter D1 of the polished rod of the threaded shaft of the bracket. The left inner left-hand thread cooperates with the thread of the bracket 1, and the right inner right-hand thread cooperates with the thread of the bracket 2.

[0027] The specific operation steps of the neutral state fixing device of the pedal on the machine are as follows: Figure 5 Fixing device on the machine installation diagram

[0028] Step 1: Connect the threaded shaft of the left bracket 1 to the left side of the threaded sleeve 3.

[0029] Step 2: Connect the threaded shaft of the right bracket 1 to the right side of the threaded sleeve 3.

[0030] Step 3: Adjust the length of the assembled device to be greater than the distance between the end faces of the left and right pedal sectors.

[0031] Step 4: Insert the positioning pin 11 on the left bracket 1 into the two adjustment holes of the left pedal fan-shaped part, and insert the positioning pin 11 on the right bracket 1 into the two adjustment holes of the right pedal fan-shaped part.

[0032] Step 5: Adjust the fixing device by rotating the rotating rod 4 to lock the left and right pedals, ensuring that the left and right pedal plates are at the same level (0±0.5mm).

[0033] Step 6: Mark the transmission rod positioning or adjust the system neutrality, and disassemble the fixed device after the work is completed.

[0034] The following is a detailed description of a fixing device of the present invention in conjunction with the accompanying drawings:

[0035] Example 1: The height H of the positioning pin shaft 11 on the left bracket 1 is 4mm, the center distance is 27mm, the thread is M8X1.5, and the diameter of the polished rod at the lower end of the threaded shaft is 16f9mm.

[0036] The diameter of the threaded sleeve 3 hollow tube is 16H8mm, the thread is M8X1.5, the left side is left-handed and the right side is right-handed.

[0037] Example 2: The height H of the positioning pin 11 on the left bracket 1 is 6mm, the center distance is 30mm, the thread is M10X1.5, and the diameter of the polished rod at the lower end of the threaded shaft is 18f9mm

[0038] The height H of the positioning pin shaft 11 on the right bracket 2 is 6mm, the center distance is 30mm, the diameter of the polished rod at the lower end of the right-hand threaded shaft is 18f9mm, and the thread is M10X1.5

[0039] The diameter of the threaded sleeve 3 hollow tube is 18H8mm, the thread is M10X1.5, the left side is left-handed and the right side is right-handed.

[0040] The specific steps are as follows:

[0041] Step 1: First connect the threaded shaft of the left bracket 1 with the left side thread of the threaded sleeve 3.

[0042] Step 2: Connect the threaded shaft of the right bracket 1 to the right side of the threaded sleeve 3.

[0043] Step 3: Adjust the length of the assembled device to be greater than the distance between the end faces of the left and right pedal sectors.

[0044] Step 4: Insert the locating pin 11 on the left bracket 1 into the two adjustment holes of the left pedal fan-shaped part, and insert the locating pin 11 on the right bracket 1 into the two adjustment holes of the right pedal fan-shaped part.

[0045] Step 5: Adjust the fixing device and lock the left and right pedals by rotating the rotating rod 4 to ensure that the left and right pedals are at the same level (0±0.5mm).

[0046] Step 6: Mark the transmission rod positioning or adjust the system neutrality, and disassemble the fixed device after the work is completed.

[0047] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as the general understanding of those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with that in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such here. The specific embodiments described above further explain the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pedal neutral state fixing device, characterized in that: It includes a bracket and a threaded pipe sleeve; the bracket includes a base and a boss, the base and the boss are welded as one, a positioning pin is provided on the base, the positioning pin is used to cooperate with the fan-shaped adjustment hole of the pedal, the boss is a cylindrical step, the large cylindrical section is a smooth plane, and the small cylindrical section is a threaded section, the threaded pipe sleeve is symmetrically provided with step holes, the large step hole is used to guide with the large cylindrical section, and the small step hole is used to screw with the threaded section, the brackets are two symmetrical to each other, respectively connected to the two ends of the threaded pipe sleeve, and the threaded sections of the two brackets are opposite to each other.

2. The device according to claim 1, wherein It also includes a rotating rod, which passes through the threaded sleeve and is used to assist in applying force when the threaded sleeve rotates.

3. The device according to claim 2, wherein The rotating rod passes through the middle of the threaded sleeve to apply force more evenly.

4. The device according to claim 3, characterized in that The number of the positioning pins is at least 2, and they match the shape of the adjustment hole of the pedal sector.

5. The device according to claim 4, characterized in that The bracket and the threaded pipe sleeve are both made of 45# steel.

6. The device according to claim 5, characterized in that The base of the bracket is chamfered around four sides to avoid interference with parts.

7. The device according to claim 6, characterized in that An arc-shaped cutout is provided on one side of the base close to the pedal sector to avoid interference with the pedal sector.

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