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Novel mining counter-rotating main fan blade angle adjusting device

A technology of blade angle and adjustment device, which is applied in the components of pumping device for elastic fluid, mechanical equipment, machine/engine, etc., can solve the problems of long adjustment time interval, loose nut, seizing, etc.

Active Publication Date: 2018-07-06
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the blade angle adjustment device for counter-rotating main ventilators used in mines usually adopts structural methods such as the contact between the blade petiole and the tapered surface of the petiole sleeve, and the locking of the blade tenon with a threaded nut. Requirements for disassembly and assembly, under the action of damp and corrosive gases in coal mines, the blade tenon and tenon sleeve are easily corroded, seized, the thread fails, and the nut is loose, which makes it difficult to rotate the blade, poor angle adjustment accuracy, and even causes the blade angle to be unable to adjust

Method used

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  • Novel mining counter-rotating main fan blade angle adjusting device
  • Novel mining counter-rotating main fan blade angle adjusting device
  • Novel mining counter-rotating main fan blade angle adjusting device

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Embodiment Construction

[0011] See figure 1 with figure 2 , The blade angle adjusting device of the counter-rotating main fan for mining of the present invention is composed of blade 1, mounting seat 2, positioning block 3, and clamp 4. Wherein, the mounting base 2 is welded to the drum, the blade 1 tenon is placed in the inner hole of the mounting base 2, a U-shaped groove is provided on the head of the blade 1 tenon for the clamp 4 to lock the blade, and the surface of the tenon is provided with a horizontal plane, The horizontal plane is attached to the inclined plane of the positioning block 3 and is used to fix the blade angle. The positioning block 3 is fixed on the mounting seat 2 by screws, the end surface of the positioning block 3 is provided with inclined surfaces with different angles, and the installation angle of the blade 1 is determined by the inclined surface of the positioning block 3. The surface of the clamp 4 is provided with a tapered surface with a certain angle, and the tenon ...

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Abstract

The invention relates to a novel mining counter-rotating main fan blade angle adjusting device. The device is provided with a blade, a mounting base, a positioning block, hoops and a screw, wherein ablade tenon is provided with a plane; the positioning block is provided with slopes with different angles and fixed to the mounting base through the screws; and the hoops are used for radically locking the blade tenon; and the two semicircular hoops are locked through the screws. The device is reasonable in structural design, the defects of tenon thread failures, rusting or non-removable engagement of tenons and tenon sleeves, difficult blade rotation and low angle adjusting precision of traditional structures can be effectively overcome, in addition, the structural design is reasonable, the effect that the blade angle is flexible and convenient to adjust and high in precision can be reliably ensured, and the safety and reliability of a mining counter-rotating main fan are greatly improved.

Description

Technical field [0001] The invention belongs to the technical field of counter-rotating main ventilator, and is a blade angle adjustment device for a counter-rotating main ventilator for mining. The adjustment device has the remarkable characteristics of simple structure, convenient disassembly and assembly, and high angle adjustment accuracy. Background technique [0002] At present, the blade angle adjustment device for the counter-rotating main fan for mines usually adopts the structure methods such as the contact and fit of the blade stalk and the conical surface of the stalk sleeve, and the screw nut locking of the blade tenon. Because the blade angle adjustment time interval is longer and the angle adjustment Disassembly and assembly requirements, under the action of coal mine damp and corrosive gas, the blade tenon and tenon sleeve are easy to rust, seize, thread failure, and nut loosening, which will cause the blade to rotate difficult, the angle adjustment accuracy is poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/28F04D29/30
CPCF04D29/281F04D29/287F04D29/30
Inventor 张军钟绍辉高文辉李延其
Owner AECC SICHUAN GAS TURBINE RES INST
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