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Axial clearance adjusting device

A technology for adjusting device and axial clearance, which is applied in shaft installation, bearing assembly, shaft, etc. It can solve the problems of damaging the dimensional accuracy of bearing holes, large axial restraint force, and affecting installation accuracy, so as to achieve a wide range of use and improve control Accuracy and the effect of improving assembly efficiency

Inactive Publication Date: 2020-02-21
CHENGDU GUOYI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Considering factors such as cost and limited space, traditional vertical shafting generally uses two universal angular contact ball bearings in pairs. The bearing clearance adjustment generally adopts the form of adding gaskets. After the principle design and repeated adjustments, Preload the bearing with gaskets and shims of appropriate size; the advantage is that it is easy to install, the axial constraint is large, and it is not easy to loosen; Destroy the dimensional accuracy of the bearing hole, thereby affecting the installation accuracy, and the production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In this example, if figure 1 and figure 2 The axial gap adjustment device shown includes a first bearing seat 1, a first bearing thread pressure ring 2, an angular contact bearing 3, a vertical shaft 4, an inner gland 5 and a flat end set screw 6; an angular contact bearing 3 The inner ring of the inner ring is in contact with the vertical shaft 4, the inner gland 5 is fixed on the vertical shaft 4 by a combination screw, the outer ring of the angular contact bearing 3 is in contact with the inner hole of the first bearing seat 1, and the threaded pressure ring of the first bearing 2 Screw in the angular contact bearing 3.

[0021] In order to accurately adjust the clearance on the bearing shaft, the first bearing threaded pressure ring 2 adopts fine thread; in order to obtain a suitable preload, it is necessary to adjust the clearance while detecting the starting friction torque; further to prevent the first bearing threaded pressure ring from 2 Loosen, and lock the...

Embodiment 2

[0024] Further, in order to better adjust the bearing clearance, in figure 1 and figure 2 Add a deep groove ball bearing on the basis of the "2+1" bearing matching structure, that is, image 3 As shown in the axial clearance adjusting device, after being installed according to Embodiment 1, put the deep groove ball bearing 9 into the second bearing seat 7, and then put it into the vertical shaft 4 together. The outer diameter of the deep groove ball bearing 9 is the same as The inner diameter of the second bearing seat 7 is matched, and the bearing gland 8 is fixedly connected with the second bearing seat 7 with a combination screw, and the inner diameter of the deep groove ball bearing 9 is matched with the outer diameter of the vertical shaft 4, and the nut 10 is used to limit the position; here, The nut 10 can also adopt a gland-fixed structural form, which is similar to the installation method of the inner gland 5; this structural form can fully reflect the stepless adju...

Embodiment 3

[0026] In the case of satisfying the height space of Example 1 but not satisfying Example 2, another solution is proposed: in image 3 Replace a pair of angular contact bearings 3 with deep groove ball bearings 9 on the basis of Figure 4 Shown is an axial clearance adjustment device.

[0027] An axial gap adjustment device, the inner ring of the deep groove ball bearing 9 is in contact with the vertical shaft 4, the inner gland 5 is fixed on the vertical shaft 4 through a combination screw, and the outer ring of the deep groove ball bearing 9 is in contact with the first bearing seat The inner hole of 1 is matched and contacted, the outer gland 11 locks the bearing by screws, the deep groove ball bearing 9 is put into the second bearing seat 7, and then put into the vertical shaft 4 together, the inner diameter of the deep groove ball bearing 9 is consistent with the vertical shaft 4 Cooperate with the outer diameter of the outer diameter, use the nut 10 to limit the positio...

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Abstract

The invention discloses an axial clearance adjusting device. The axial clearance of a vertical shaft bearing is adjusted by adjusting the tightness of a bearing threaded pressing ring, and the clearance on the shaft can be quickly and simply adjusted without disassembling mounted parts; meanwhile, the bearing is limited through a gland fixing structure, the bearing threaded pressing ring is lockedthrough a flat end set screw, the clearance on the bearing shaft is eliminated by adding a thread adjusting and set screw retaining mode, and the problem that multiple times of disassembly and assembly are needed due to a gasket or a thick or thin strip when a vertical shaft is mounted in the prior art is solved; the axial clearance adjusting device has the advantages of being small in size, light in weight, compact in structure and the like, the control precision of a photoelectric stabilized platform can be effectively improved, stability and reliability are achieved, and loosening is avoided even if the load change is large; the assembly efficiency can be greatly improved, the assembly error is smaller, the rotation precision is higher, the bearing capacity of a shaft system is larger,and good stabilizing conditions are provided for the photoelectric stabilized platform in the subsequent operation process.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment manufacturing, in particular to an axial gap adjustment device. Background technique [0002] Due to the limitation of the airborne conditions, the volume and weight of the optoelectronic platform have always been the main issues considered by the structural designers; in the existing technical data, most of the small optoelectronic platforms adopt the structural form of two axes and two frames, that is, It is divided into vertical axis system and pitch axis system; the vertical axis system mainly includes azimuth rotation, azimuth torque motor, bearing and vertical axis, etc.; Most of the load of the entire equipment and the azimuth rotation drive and angle measurement system, the quality of the design will directly affect the reliability and accuracy of the whole machine, etc. Therefore, the design of the vertical shaft system is one of the key technologies of the entire photoelectr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C35/06
CPCF16C35/06F16C2226/60F16C2226/62F16C2229/00
Inventor 宋雪群
Owner CHENGDU GUOYI ELECTRONICS TECH CO LTD
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