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Fixing shaft sleeve device for bearing on shaft and rotating joint with device

A technology of rotary joints and fixed shafts, applied in casing, drilling equipment, earth-moving drilling, etc., can solve the problems of poor anti-loosening performance and decreased axial bearing capacity, and achieve loosening prevention, strong axial load bearing capacity, The effect of excellent anti-loosening performance

Pending Publication Date: 2020-06-19
湖南盛势通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to deal with the above-mentioned problems in the prior art, the present invention provides a fixed shaft sleeve device for the bearing on the shaft, so as to solve the problem that the shaft structure is damaged due to the fixed bearing on the shaft, so that the overall axial bearing capacity similar to that of the rotary joint is greatly increased. The problem of falling and the problem of poor anti-loosening performance

Method used

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  • Fixing shaft sleeve device for bearing on shaft and rotating joint with device
  • Fixing shaft sleeve device for bearing on shaft and rotating joint with device
  • Fixing shaft sleeve device for bearing on shaft and rotating joint with device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a rotary joint for a rotary excavator includes an upper joint 1, a cylindrical intermediate body 11, and a lower joint 12, the upper joint 1 is rotationally connected with the intermediate body 11, the intermediate body 11 and the lower joint The joint 12 is fixedly connected by bolts. Specifically, the shaft 4 is arranged on the upper joint 1 and integrally formed with the upper joint 1. The shaft 4 is provided with an angular contact ball bearing 14, and the angular contact ball bearing 14 The left side of the outer ring is resisted by the clamping step 11a on the inner wall of the intermediate body 11 to limit the leftward axial movement, and the right side of the inner ring of the angular contact ball bearing 14 is restrained by the fixed sleeve device for bearing on the shaft of the present invention. The rightward axial movement is limited by the conflict, that is, the intermediate body 11 carries the lower joint 12 and is rotationally ...

Embodiment 2

[0032] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the end of the first shaft sleeve 2 that interferes with the second shaft sleeve 3 is provided with a conflicting tapered surface 7, and correspondingly, the second shaft sleeve 3 interferes with the One end of the first shaft sleeve 2 is provided with a tapered hole 9; during assembly, the first shaft sleeve 2 is cold-fitted, and the second shaft sleeve 3 is hot-fitted.

Embodiment 3

[0034] Such as Figure 4 Shown, the difference between this embodiment and Embodiment 1 is that the present invention also includes a third bushing 3a, the third bushing 3a is arranged on the right side of the second bushing 3, adjacent to the first stepped shaft 6a, the third shaft sleeve 3a is threadedly connected with the first stepped shaft 6a. It should be noted that the screw threads on the inner wall of the third shaft sleeve 3a and the second shaft sleeve 3 are also opposite in direction. In this embodiment, the end of the second shaft sleeve 3 that conflicts with the third shaft sleeve 3a is provided with the conflicting tapered surface 7, and correspondingly, the end of the third shaft sleeve 3a that conflicts with the second shaft sleeve 3 One end is provided with the tapered hole 9 .

[0035] Preferably, a positioning screw is further provided between the second bushing 3 and the third bushing 3a.

[0036] Taking Embodiment 1 as an example, when the rotary joint ...

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Abstract

The invention relates to a fixing shaft sleeve device for a bearing on a shaft and a rotating joint with the device. The fixing shaft sleeve device for the bearing on the shaft comprises a first shaftsleeve and a second shaft sleeve which abut against each other, wherein the first shaft sleeve is arranged on one side of the bearing on the shaft and is in threaded connection with the shaft, the second shaft sleeve is arranged on an adjacent stepped shaft and is in threaded connection with the stepped shaft, threads on the inner walls of the first shaft sleeve and threads on the inner walls ofthe second shaft sleeve are opposite in rotating direction, abutting conical surfaces are arranged at the ends, abutting against each other, of the first shaft sleeve or the second shaft sleeve, and correspondingly, conical holes abutting against the abutting conical surfaces in a matching mode are formed in the other one of the first shaft sleeve and the second shaft sleeve. According to the fixing shaft sleeve device for the bearing on the shaft and the rotating joint with the device, the first shaft sleeve and the second shaft sleeve with opposite internal thread rotating directions are fixed on the shaft at the to-be-fixed end of the bearing through the threads, the abutting surfaces of the first shaft sleeve and the second shaft sleeve are conical surfaces so that the bearing can be firmly locked by the combination of the first shaft sleeve and the second shaft sleeve, and a mechanism applying the scheme, such as a rotating joint, is ensured to have axial heavy-load capacity and excellent anti-loosening performance.

Description

technical field [0001] The invention belongs to the technical field of mechanical connection and fastening devices, and in particular relates to a fixed shaft sleeve device for an on-shaft bearing and a rotary joint with the device. Background technique [0002] In general, the shaft bearings are often fixed with shaft elastic retaining rings. The bearings under this fixing method cannot withstand large axial forces, but in some applications, the shaft bearings need to withstand large axial forces. For example, in the application of the rotary joint of the rotary drilling rig, the rotary joint needs to bear the heavy load at the lower end and the torsion generated by the rotary drilling tool at the lower end. Therefore, the bearing on the central shaft integrated with the lower joint needs to bear more large axial load force, and in order to fix these bearings and make them able to withstand large axial loads, a drill pipe puller for anti-mud type rotary drilling rig with pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/05
CPCE21B17/05
Inventor 聂伟荣
Owner 湖南盛势通科技有限公司