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Method for adjusting clearance of bearing at upper part of heavy loaded planetary reducer of coal cutter cutting unit

A technology of shearer cutting part and planetary reducer, which is applied to mechanical equipment, transmission parts, belts/chains/gears, etc., can solve the problems of oil leakage of floating seals, and achieve easy installation, good effect, and adjustment value accurate effect

Inactive Publication Date: 2012-11-07
XIAN COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of this gap adjustment method is good, which not only improves the service life of the bearing, but also solves the problem of oil leakage of the floating seal in a short period of time, and improves the service life of the shearer

Method used

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  • Method for adjusting clearance of bearing at upper part of heavy loaded planetary reducer of coal cutter cutting unit
  • Method for adjusting clearance of bearing at upper part of heavy loaded planetary reducer of coal cutter cutting unit
  • Method for adjusting clearance of bearing at upper part of heavy loaded planetary reducer of coal cutter cutting unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 , figure 2 with image 3 Shown is a method for adjusting the upper bearing clearance of a heavy-duty planetary reducer in the cutting part of a coal mining machine. The heavy-duty planetary reducer includes an inner ring gear 5 fixedly installed on the cutting part of the The sun gear 1 and the planet carrier 12 on the coal machine cutting section, the planet carrier 12 is equipped with a plurality of planetary gears 4 arranged around the sun gear 1, and the sun gear 1 is meshed with a plurality of planetary gears 4, so The inner ring gear 5 is meshed with a plurality of planetary gears 4 located inside it, and a bearing seat 3 is provided on the cutting part of the shearer and at the lower part of the planet carrier 12, and a bearing seat 3 is provided on the bearing seat 3. The first tapered roller bearing 2 matching the planet carrier 12, the upper part of the ring gear 5 is provided with a bearing seat 2 7, and the bearing seat 2 7 is provided wi...

Embodiment 2

[0051] Such as figure 1 , figure 2 with image 3 As shown, another heavy-duty planetary reducer in the cutting part of the coal shearer is selected as the adjustment object. The structure and shape of the heavy-duty planetary reducer are the same as those described in Embodiment 1.

[0052] The difference between this embodiment and Embodiment 1 is that, when the tapered roller bearing 2 6 is under the condition of no load, the method for adjusting the clearance of the tapered roller bearing 2 6 includes the following steps:

[0053] Step 1. Install the sealing cover: Install the sealing cover 9 on the bearing seat 2 7, the sealing cover 9 is circular, and the sealing cover 9 includes the connecting ring 1 9-1 and The second connecting ring 9-2 matching the outer ring 6-1 of the tapered roller bearing 6, the first connecting ring 9-1 and the second connecting ring 9-2 are integrally formed, and the second connecting ring 9-2 2 and the outer ring 6-1 are provided with a rig...

Embodiment 3

[0064] Such as figure 1 , figure 2 with image 3 As shown, another heavy-duty planetary reducer in the cutting part of the coal shearer is selected as the adjustment object. The structure and shape of the heavy-duty planetary reducer are the same as those described in Embodiment 1.

[0065] The difference between this embodiment and Embodiment 1 is that, when the tapered roller bearing 2 6 is under the condition of no load, the method for adjusting the clearance of the tapered roller bearing 2 6 includes the following steps:

[0066] Step 1. Install the sealing cover: Install the sealing cover 9 on the bearing seat 2 7, the sealing cover 9 is circular, and the sealing cover 9 includes the connecting ring 1 9-1 and The second connecting ring 9-2 matching the outer ring 6-1 of the tapered roller bearing 6, the first connecting ring 9-1 and the second connecting ring 9-2 are integrally formed, and the second connecting ring 9-2 2 and the outer ring 6-1 are provided with a rig...

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Abstract

The invention discloses a method for adjusting the clearance of a bearing at the upper part of the heavy loaded planetary reducer of a coal cutter cutting unit. The heavy loaded planetary reducer includes an inner ring gear, a sun gear and a planet carrier. On the planet carrier are mounted a plurality of planetary gears, the sun gear is engaged with the plurality of planetary gears, the inner gear ring is engaged with the planetary gears, a first bearing seat is arranged on the coal cutter cutting unit and located at the lower part of the planet carrier, a first tapered roller bearing is arranged on the first bearing seat, a second bearing seat is arranged at the upper part of the inner ring gear, and a second tapered roller bearing is arranged on the second bearing seat. The method for adjusting the clearance of the second tapered roller bearing comprises (1) mounting a seal cover; (2) calculating the clearance S between the seal cover and the second bearing seat; (3) calculating the adjustment amount X of the clearance of the second tapered roller bearing; and (4) modifying the seal cover according to the adjustment amount X. The clearance adjusting method is good to use, not only improves the service life of the bearing, but also improves the service life of the coal cutter.

Description

technical field [0001] The invention relates to a method for adjusting a bearing clearance, in particular to a method for adjusting the clearance of an upper bearing of a heavy-duty planetary reducer in a cutting part of a coal mining machine. Background technique [0002] The heavy-duty planetary reducer of the cutting part of the coal mining machine uses a pair of tapered roller bearings. Whether the adjustment of the gap between the tapered bearings is reasonable will directly affect the performance and reliability of the planetary reducer. The assembly will cause inaccurate shaft positioning, poor meshing of gears, noise, and even tooth beating. At the same time, the size of the taper bearing gap directly affects the compression amount of the DF floating oil seal, too large or too small will have a significant impact on the sealing effect. Reasonable adjustment of taper bearing clearance has become a key link to improve product reliability. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): F16H57/022F16H57/08
Inventor 弥红斌唐荣斌杨文利
Owner XIAN COAL MINING MACHINERY
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