acionamentos calculo

Download Acionamentos calculo

Post on 03-Nov-2014

208 views

Category:

Documents

3 download

Embed Size (px)

TRANSCRIPT

Acionamentos TRANSLAO (Sistema sem rodas - atrito puro) Massa do sistema Coeficiente de atrito Velocidade de translao Rendimento do sistema Dimetro do tambor 40,000.00 kg 0.30 0.03 m/s 85.00 % 800.00 mm N2 = I= 0.60 2932.07 rpm ** Fr = Px = T= 117,720.00 N 3.46 55400.09 kW Nm

TRANSLAO (Sistema sobre rodas) Massa do sistema Dimetro da roda Dimetro do mancal Coeficiente de atrito Brao alavanca* Adicional de atrito lateral Velocidade de translao Rendimento do sistema 17,500.00 kg 230.00 mm 50.00 mm 0.100 0.500 0.030 0.07 m/s 100.00 % Fr = Px = T= N2 = I= 9,628.73 0.63 1,107.35 5.40 324.22 N kW Nm rpm **

*Brao de alavanca resistente ao rolamento **Considerando rotao de entrada no redutor de 1750 rpm

Coeficientes de atrito atrito escorreg. atrito aderncia substncia sobre S M E S M E BRONZE BRONZE 0.20 0.10 0.60 0.11 FERRO F. 0.18 0.70 AO 0.18 0.80 0.19 MADEIRA MADEIRA I 0.50 0.60 MADEIRA II 0.30 0.50 FERRO F. FERRO F. 0.31 0.10 0.16 AO 0.18 0.33 BORRACHA ASFALTO 0.50 0.30 0.20 CONCRETO 0.60 0.50 0.30 CORDA MADEIRA 0.50 COURO MADEIRA 0.40 0.50 FERRO F. 0.40 0.40 0.20 0.40 0.50 0.25 AO MADEIRA 0.26 0.08 0.65 0.30 GELO 0.014 0.027 AO 0.10 0.10 0.15 0.12 S - SECO MADEIRA I - fibras dos corpos paralelas M - MOLHADO MADEIRA II - fibras perpendiculares E - ENGRAXADO Atrito de rolamento substncia sobre Brao alavanca (mm) Borracha sobre asfalto 1.00 Borracha sobre concreto 1.50 Madeira de guiaco sobre a mesma 5.00 Ao sobre ao (rolamentos de esfera) 0.05 Ao sobre ao (no-temperado) 0.50 Madeira de olmo sobre sobre guiaco 8.00

Acionamentos FUSO Massa do sistema Passo do fuso Rendimento do sistema Rotao do fuso 2,000.00 kg 7.00 mm 27.00 %* P= 143.00 rpm 1.21 kW** Fr = T= 19,620.00 80.96 N Nm

* O rendimento para este sistema varia de 27% a 35% **Potncia requerida na base do fuso

Acionamentos ELEVAO Massa do sistema Velocidade de elevao Dimetro do tambor Nmero de cabos Rotao do motor Reduo motor/redutor Rendimento sistema 250.00 kg 0.20 m/s 530.00 mm 2 1,150.00 rpm 1.00 95.00 % T= P= N2 = I= 324.96 0.52 14.41 79.78 Nm kW* rpm

* No considerado o rendimento do redutor

Acionamentos ELEVADOR DE CANECA Velocidade da correia Rendimento motorizao Distncia entre centros Dimetro tambor do p Peso especfico do material Capacidade cada caneca Passo da caneca Rotao do motor Reduo motor/redutor* No considerado o rendimento do redutor

2.00 0.91 22.00 0.50 0.67 0.00 0.20 1750 1

m/s m m t/m m m rpm

T= P= N2 = I= Vazo =

244.01 2.73 76.40 22.91 32.56

Nm kW* rpm

ton/h

MTODO PRTICO Altura do elevador Vazo 22 m 32 ton/h P= 3.11 kW

Acionamentos TRANSPORTADOR DE CORREIA Comprimento transportador Largura da Correia Altura de elevao Comprimento das guias Capacidade Velocidade da correia Rotao do motor Reduo motor/redutor Dimetro tambor* No considerado o rendimento do redutor OBS: Esta planilha no calcula a potncia para valores que no constem nas listas dos itens em cinza

15.00 48.00 0.00 20.00 490.00 0.17

m " m m ton/h m/s

T= P= N2 = I=

3,579.60 2.73 7.30 246.70

Nm kW* rpm

1,800.00 rpm 1.00 445.00 mm

Acionamentos AGITADORES Velocidade tangencial rea das ps Densidade do produto ngulo das ps N ps por impelidor N impelidores Rotao do motor Reduo motor/redutor 0.12 0.50 1,500.00 45.00 4.00 2.00 m/s m kg/m T= P= N2 = I= 1,800.00 rpm 1.00 1.07 0.00 22.00 81.82 Nm kW rpm

* No considerado o rendimento do redutor

Velocidade tangencial: Dimetro das ps Rotao desejada Vt =

0.1 m 22 rpm 0.12 m/s

Comprimento Dimetro Passo Rotao Grau Enchimento Coeficiente Resistncia Densidade Inclinao

4 0.15 0.15 58 1 4 3.2 45

m m m rpm

V= G= Pa = Pas =

9.224229 29.51753 1.29 kW 1.82 kW

t/m

Tabela de padres (mm) Dimetro 160 Passo 160 Rotao 90

200 200 80

250 250 71

315 300 63

400 355 56

500 400 50

630 450 40

Clculo da Produo da Rosca Volume total = Volume do produto = Produo da rosca = 0.071 m 0.071 m 29.518 ton/hora

Clculo da Rotao da Rosca Produo desejada =

Rotao necessria =

800 500 32

Rotao da Rosca 60 ton/hora

117.90 rpm

Rosca Transportadora Comprimento do transportador Dimetro da Rosca Rotao da rosca Tipo de rolamentos Capacidade da rosca Material Peso do material Rotao do motor Reduo motor/redutor Reduo redutor/rosca Fator de dimetro Fator de rolamento Fator de "flight" Fator do material Fator "paddle" Fator de sobrecarga Rendimento* Fd Fb Ff Fm Fp Fo n 15 m 6 " (polegada) 60 rpm Superfcie Tratada 60 m/h Bones, Crushed 1000 kg/m 1750 rpm 1 1 Medidas convertidas 49.2126 CLCULO DA POTNCIA HPf = 1.698 HPm = 62.4 HP = Clculo da Reduo=>

18 4.4 1.5 (Constante) 2 1.5 (Constante) 2.541771 0.95 (verificar possibilidade de remoo deste item)

* O rendimento refere-se ao redutor

Fator de dimetro Dimetro Fd 4 12 6 18 9 31 10 37 12 55 14 78 16 106 18 135 20 165 24 235 30 300

Material Adipic Acid Alfalfa Meal Alfalfa Pellets Alfalfa Seed Almonds, Broken Almonds, Whole Shelled Alum, Fine Alum, Lumpy Alumina Alumina, Fine Alumina Sized Or Briquette Aluminate Gel (Aluminate Hydroxide) Aluminum Chips, Dry Aluminum Chips, Oily Aluminum Hydrate Aluminum Ore (See Bauxite) Aluminum Oxide Aluminum Silicate (Andalusite) Aluminum Sulfate Ammonium Chloride, Crystalline Ammonium Nitrate Ammonium Sulfate Antimony Powder Apple Pomace, Dry Arsenate Of Lead (See Lead Arsenate) Arsenic Oxide (Arsenolite) Arsenic Pulverized Asbestos Rock (Ore) Asbestos Shredded Ash, Black Ground

Fm 0.5 0.6 0.5 0.4 0.9 0.9 0.6 1.4 1.8 1.6 2 1.7 1.2 0.8 1.4 1.8 0.8 1 0.7 1.3 1 1.6 1 0.8 1.2 1 2

Ashes, Coal, Dry 12 Ashes, Coal, Dry 3 Ashes, Coal, Wet 12 Ashes, Coal, Wet 3 Ashes, Fly (See Fly Ash) Asphalt, Crushed 12 Bagasse Bakelite, Fine Baking Powder Baking Soda (Sodium Bicarbonate) Barite (Barium Sulfate) + 12 3 Barite, Powder Barium Carbonate Bark, Wood, Refuse Barley, Fine, Ground Barley, Malted Barley, Meal Barley, Whole Basalt Bauxite, Dry, Ground Bauxite, Crushed 3 Beans,Castor, Meal Beans, Castor, Whole Shelled Beans, Navy, Dry Beans, Navy, Steeped Bentonite, Crude Bentonite, 100 Mesh Benzene Hexachloride Bicarbonate of Soda (Baking Soda) Blood, Dried Blood, Ground, Dried Bone Ash (Tricalcium Phosphate) Boneblack Bonechar Bonemeal Bones, Whole* Bones, Crushed Bones, Ground Borate of Lime Borax, Fine Borax Screening 12 Borax, 112-2 Lump Borax, 2-3 Lump Boric Acid, Fine Boron Bran, Rice Rye Wheat Braunite (Manganese Oxide) Bread Crumbs Brewers Grain, Spent, Dry Brewers Grain, Spent, Wet Brick, Ground 18 Bronze Chips Buckwheat Calcine, Flour Calcium Carbide Calcium Carbonate (See Limestone)

3 2.5 3 4 2 1.5 1.4 0.6 0.6 2.6 2 1.6 2 0.4 0.4 0.4 0.5 1.8 1.8 2.5 0.8 0.5 0.5 0.8 1.2 0.7 0.6 0.6 2 1 1.6 1.5 1.6 1.7 3 2 1.7 0.6 0.7 1.5 1.8 2 0.8 1 0.5 2 0.6 0.5 0.8 2.2 2 0.4 0.7 2

Calcium Fluoride (See Fluorspar) Calcium Hydrate (See Lime, Hydrated) Calcium Hydroxide (See Lime, Hydrated) Calcium Lactate 0.6 Calcium Oxide (See Lime, Unslaked) Calcium Phosphate 1.6 Calcium Sulfate (See Gypsum) Carbon, Activated, Dry Fine* Carbon Black, Pelleted* Carbon Black, Powder* Carborundum 3 Casein 1.6 Cashew Nuts 0.7 Cast Iron, Chips 4 Caustic Soda 1.8 Caustic Soda, Flakes 1.5 Celite (See Diatomaceous Earth) Cement, Clinker 1.8 Cement, Mortar 3 Cement, Portland 1.4 Cement, Aerated (Portland) 1.4 Cerrusite (See Lead Carbonate) Chalk, Crushed 1.9 Chalk, Pulverized 1.4 Charcoal, Ground 1.2 Charcoal, Lumps 1.4 Chocolate, Cake Pressed 1.5 Chrome Ore 2.5 Cinders, Blast Furnace 1.9 Cinders, Coal 1.8 Clay (See Bentonite, Diatomaceous Earth,Fullers Earth, Kaolin & Marl) Clay, Ceramic, Dry, Fines 1.5 Clay, Calcined 2.4 Clay, Brick, Dry, Fines 2 Clay, Dry, Lumpy 1.8 Clinker, Cement (See Cement Clinker) Clover Seed 0.4 Coal, Anthracite (River & Culm) 1 Coal, Anthracite, Sized-12 1 Coal, Bituminous, Mined 0.9 Coal, Bituminous, Mined, Sized 1 Coal, Bituminous, Mined, Slack 0.9 Coal, Lignite 1 Cocoa Beans 0.5 Cocoa, Nibs 0.5 Cocoa, Powdered 0.9 Cocoanut, Shredded 1.5 Coffee, Chaff 1 Coffee, Green Bean 0.5 Coffee, Ground, Dry 0.6 Coffee, Ground, Wet 0.6 Coffee, Roasted Bean 0.4 Coffee, Soluble 0.4 Coke, Breeze 1.2 Coke, Loose 1.2 Coke, Petrol, Calcined 1.3

Compost Concrete, Pre-Mix Dry Copper Ore Copper Ore, Crushed Copper Sulphate, (Bluestone) Copperas (See Ferrous Sulphate) Copra, Cake Ground Copra, Cake, Lumpy Copra, Lumpy Copra, Meal Cork, Fine Ground Cork, Granulated Corn, Cracked Corn Cobs, Ground Corn Cobs, Whole* Corn Ear* Corn Germ Corn Grits Cornmeal Corn Oil, Cake Corn Seed Corn Shelled Corn Sugar Cottonseed, Cake, Crushed Cottonseed, Cake, Lumpy Cottonseed, Dry, Delinted Cottonseed, Dry, Not Delinted Cottonseed, Flakes Cottonseed, Hulls Cottonseed, Meal, Expeller Cottonseed, Meal, Extracted Cottonseed, Meats, Dry Cottonseed, Meats, Rolled Cracklings, Crushed Cryolite, Dust Cryolite, Lumpy Cullet, Fine Cullet, Lump Culm, (See Coal, Anthracite) Cupric Sulphate (Copper Sulfate) Detergent (See Soap Detergent) Diatomaceous Earth Dicalcium Phosphate Disodium Phosphate Distillers Grain, Spent Dry Distillers Grain, Spent Wet Dolomite, Crushed Dolomite, Lumpy Earth, Loam, Dry, Loose Ebonite, Crushed Egg Powder Epsom Salts (Magnesium Sulfate) Feldspar, Ground Feldspar, Lumps Feldspar, Powder Feldspar, Screenings

1 3 4 4 1 0.7 0.8 1 0.7 0.5 0.5 0.7 0.6 N/A N/A 0.4 0.5 0.5 0.6 0.4 0.4 1 1 1 0.6 0.9 0.8 0.9 0.5 0.5 0.6 0.6 1.3 2 2.1 2 2.5 1.6 1.6 0.5 0.5 0.8 2 2 1.2 0.8 1 0.8 2 2 2 2

Ferrous Sulfide 12 Ferrous Sulfide 100M Ferrous Sulphate Fish Meal Fish Scrap Flaxseed Flaxseed Cake (Linseed Cake) Flaxseed Meal (Linseed Meal) Flour Wheat Flue Dust, Basic Oxygen Furnace Flue Dust, Blast Furnace Flue Dust, Boiler H. Dry Fluorspar, Fine (Calcium Fluoride) Fluorspar, Lu