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Device and method for installing aircraft pull rod bearing bolt

A technology for bearing bolts and installation devices, which is applied to hand-held tools, manufacturing tools, etc., can solve the problems of increasing the gap between the inner ring and the outer ring of the bearing, falling off the inner ring of the bearing, and falling off of the bearing balls, so as to improve the concentricity and avoid the Offset or shedding effects

Active Publication Date: 2014-02-19
JIANGXI HONGDU AVIATION IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is difficult to adjust the concentricity of the bearing with the lever, and the adjustment result is not ideal every time.
If the concentric adjustment of the bearing is not in place, the bolt will form a certain angle with the bearing hole during installation, resulting in a tight phenomenon. Tap it lightly with a copper rod, and the bearing will bear a certain impact load
If the load exceeds the limit value of the bearing, it may cause the gap between the inner ring and the outer ring of the bearing to increase, and the bearing balls will fall off; in severe cases, it may directly cause the inner ring of the bearing to fall off, causing damage to the bearing

Method used

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  • Device and method for installing aircraft pull rod bearing bolt
  • Device and method for installing aircraft pull rod bearing bolt
  • Device and method for installing aircraft pull rod bearing bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 like Figure 1-3 Shown: an installation device for an aircraft tie rod bearing bolt, used to install a tie rod bearing bolt 9 to an aircraft tie rod 7 with a ball bearing 5; the upper fixing frame 3 above the aircraft tie rod 7 and the lower fixing frame 8 below Relying on the positioning bolts 6 on the left and right sides to clamp the aircraft tie rod 7, the vertical screw rod 2 is inserted into and threaded with the central hole of the upper fixing frame 3, the top of the screw rod 2 is provided with a horizontal rotating rod 1; the positioning guide rod 13 or the bolt positioning sleeve The external thread on the top of the barrel 4 is connected with the internal thread on the bottom of the screw 2, and the thin end of the positioning guide rod 13 is slidingly matched with the inner ring of the ball bearing 5; In cooperation, the inner hexagonal hole at the bottom of the bolt positioning sleeve 4 is provided with a spring steel sheet 10 and a hexagonal h...

Embodiment 2

[0022] Example 2 like Figure 1-3 Shown: a method for using the installation device of the aircraft tie rod bearing bolts described in Embodiment 1, and the method for installing the aircraft tie rod bearing bolts, comprising:

[0023] ① Connect and tighten the external thread on the top of the positioning guide rod 13 with the internal thread on the bottom of the screw 2;

[0024] ② Place the upper fixing frame 3 and the lower fixing frame 8 on the upper and lower sides of the aircraft tie rod 7 equipped with the ball bearing 5 respectively, so that the inner hole of the ball bearing 5 is aligned with the positioning guide rod 11; Rotate the horizontal lever clockwise 1. Drive the vertical screw 2 threaded with the central hole of the upper fixing frame 3 and the positioning guide rod 13 screwed with the thread to slowly insert it into the inner hole of the ball bearing 5, so that the vertical screw 2 and the ball bearing 5 are concentric; Tighten the positioning bolts 6 ...

Embodiment 3

[0031] Example 3 like Figure 4 Shown: the appendix corresponding to Example 1 figure 1 It is the installation tie rod bearing bolt 9 for a single aircraft tie rod 7 provided with two ball bearings 5. Figure 4 The tie rod bearing bolts 9 are installed for the upper aircraft tie rod 7 and the lower aircraft tie rod 15 each provided with a ball bearing 5; a spacer 14 is provided between the inner rings of the ball bearing 5 of the upper aircraft tie rod 7 and the lower aircraft tie rod 15. Install and tighten the nut matched with the tie rod bearing bolt 9, the upper step retaining ring 11, the lower washer 12 and the spacer 14, so that the tie rod bearing bolt 9 only fastens the inner ring of the ball bearing 5 to ensure that the aircraft tie rod 7 and the lever 15 for getting off the plane can rotate relative to each other freely.

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PUM

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Abstract

The invention relates to a device and method for installing an aircraft pull rod bearing bolt. An aircraft pull rod is clamped by an upper fixing frame located above the aircraft pull rod and a lower fixing frame located below the aircraft pull rod through locating bolts on the left side and the right side. A vertical threaded rod is inserted into a center hole in the upper fixing frame and is matched with the center hole in a threaded mode. A horizontal rotating rod is arranged on the top of the threaded rod. External threads on the top of a locating guide rod or bolt locating sleeve are connected with internal threads at the bottom of the threaded rod in a matched mode. The thin end of the locating guide rod is in sliding fit with the inner ring of a ball bearing. An inner hexagon hole in the bottom of the bolt locating sleeve is matched with a hexagon head of the pull rod bearing bolt and clamps the hexagon head of the pull rod bearing bolt in an elastic mode. According to the device and method for installing the aircraft pull rod bearing bolt, it is guaranteed that the pull rod bearing bolt is concentric with an inner hole of the bearing when installed, the phenomena that the inner ring of the bearing loosens and is disengaged due to impact load will not occur, the bolt installation concentricity is improved, and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to a bolt installation tool, in particular to an installation device and an installation method for aircraft tie rod bearing bolts. Background technique [0002] The installation of the bearing bolts of the aircraft tie rods is now generally used to adjust the bearing concentricity through the lever, and then install the bolts directly. If there is tightness during the installation process, it is allowed to tap with a copper rod. The process of adjusting the concentricity of the bearing by the lever in this method is relatively difficult, and the adjustment result is not ideal every time. If the concentric adjustment of the bearing is not in place, the bolt will form a certain angle with the bearing hole during installation, resulting in a tight phenomenon. If you tap it with a copper rod, the bearing will bear a certain impact load. If the load exceeds the limit value of the bearing, it may cause the gap between the inner ring a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B27/14
CPCB25B27/0007B25B27/14
Inventor 杨阳
Owner JIANGXI HONGDU AVIATION IND GRP