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Nội dung: - Giới thiệu sản phẩm - Đầu búa H45-H100 - Đầu búa H115-H180 - Kiểm tra và điều chỉnh - Bảo dưỡng - Kiểm tra - Serie sản phẩm
Caterpillar Impact Products Ltd.Caterpillar HammersWhat have I learned about Cat Hammers?Test Time Caterpillar Impact Products Ltd.Caterpillar HammersHammer Training Test1. How does a hydraulic hammer break material?a. By drilling into material.b. By transfer of shock wave into material.c. By hydraulic pressure and speed.2. What is required from a hydraulic circuit to operate a hammer?a. Flow at pressure.b. Flow at temperature.c. Relief pressure and nitrogen charge.3. What is the goal for the hammer operating pressure?a. Equal to system pressure relief.b. Adjusted to nitrogen pressure.c. Below relief valve’s crack point.4. Tool wear limits prevent what from happening?a. Tool seizing in bushing.b. Misalignment with piston.c. Improper contact with material.1 Caterpillar Impact Products Ltd.Caterpillar HammersHammer Training Test 5. What is a Constant Blow Energy (CBE) system ?a. The high frequency from distributor position.b. Low pressure circuit access to inlet flow.c . Regulation of power through the PAV spool.6. A hammer stored for a year begins leaking after reinstalling on carrier. What are the possible reasons?a. b. 7. Customer reports the hammer will not break material after recent rebuild What are possible reasons?a. b. c.8. Pre-delivery inspection indicates low pressure circuit is below specification. Explain what must be done?2 Caterpillar Impact Products Ltd.Caterpillar HammersHammer Training Test9. Will the hammer operate without nitrogen in the accumulator(s)? If so, explain the symptoms would be seen?10. Upon disassembly of accumulator, oil is found inside theNitrogen area. List the possible causes for the problem.a. b. c. 11. What are the four key areas of a pre delivery inspection?a. b. c. d. 12. List the three most important operating techniques to follow?a. b.c.3 Caterpillar Impact Products Ltd.Caterpillar HammersHammer Training Test - MASTER1. How does a hydraulic hammer break material?a. By drilling into material.b. By transfer of shock wave.c. By hydraulic pressure and speed.2. What is required from a hydraulic circuit to operate a hammer?a. Flow at pressure.b. Flow at temperature.c. Relief pressure and nitrogen charge.3. What is the goal for the hammer operating pressure?a. Equal to system pressure relief.b. Adjusted to nitrogen pressure.c. Below relief valve’s crack point.4. Tool wear limits help prevent what .?a. Tool seizing in bushing.b. Misalignment with piston.c. Improper contact with material. Caterpillar Impact Products Ltd.Caterpillar HammersHammer Training Test - MASTER 5. What is a Constant Blow Energy (CBE) system ? a. The high frequency from distributor positionb. Low pressure circuit access to inlet flowc. Regulation of power through the PAV spool6. A hammer stored for a year begins leaking after reinstalling on carrier. What are the possible reasons?a. Laying on sideb. Over greasing 7. Customer reports the hammer will not break material after recent rebuild What are possible reasons?a. Nitrogen charged improperly - usit ringb. Material to be broken is too hardc. Hammer circuit not set for proper horsepower.8. Pre-delivery inspection indicates low pressure circuit is below specification. Explain what must be done?Install shims on PAV and retest.2m Caterpillar Impact Products Ltd.Caterpillar HammersHammer Training Test - MASTER9. Will the hammer operate without nitrogen in the accumulator(s)? If so, explain the what symptom would be.YES. - Extreme hose pulsation.- No power10. Upon disassembly of accumulator, oil is found inside theNitrogen area. List the possible causes for the problem.a. Nitrogen leak through usit ring.b. Contamination of hydraulic circuit - dirt.c. Hammer flow reversed and membrane fails.11. What are the four key areas of a pre delivery inspection?a. Nitrogen charges. b. Setting hydraulic horsepower.c. Check operating pressure.d. Proper greasing.12. List the three most important operating techniques to follow?a. 90 degree angle to work material.b. Maximum time 15 seconds in one spot.c. Do not pry with tool. Caterpillar Impact Products Ltd.Caterpillar HammersHEBAGDFCLKJIMNAdvanced Training Program Caterpillar Impact Products Ltd.Caterpillar HammersAdvanced Training Program• Energy source for piston stroke.• Pressure reducing function.• Assembled together.• Transfers prying loads.• Pushes piston.• Absorbs partial impact loads.• Eliminates cross bolts.• Moves with the flow.• Dampens shock loads.• Replaceable as required.• Guidance system.• Directs flow for hammer.• Maintains oil volume.• Sales feature on all models.——————————————Write down the letter from previous page that best matches the description. Caterpillar Impact Products Ltd.Caterpillar HammersAdvanced Training Program - Master• K - Energy source for piston stroke.• I - Pressure reducing function.• J - Assembled together.• F - Transfers prying loads.• B - Pushes piston.• C - Absorbs partial impact loads.• M - Eliminates cross bolts.• G - Moves with the flow.• L - Dampens shock loads.• E - Replaceable as required.• H - Guidance system.• N - Directs flow for hammer.• D - Maintains oil volume.• A - Sales feature on all models. [...].. .Caterpillar Hammers Hammer Assembly Components H45-H100 Valve Housing Assembly • • • Cylinder Assembly • • • • Front Head Assembly • • • • Caterpillar Impact Products Ltd Caterpillar Hammers Hammer Assembly Components H115s - H180s Valve Housing Assembly • • • • • Cylinder Assembly • • • Front Head Assembly • • • • Caterpillar Impact Products Ltd CIPL Hammer... from distributor position Low-pressure circuit access to inlet flow Regulated power through the PAV spool Hammer stored over a year begins leaking after start up Cause? Piston weight on seals Pre-delivery inspection on an H50 indicates power is low ? What must be done? ~ Add shims to PAV spool Can a hammer operate without nitrogen in the accumulator(s)? YES Key areas of a pre-delivery inspection? 1 Check . - Assembled together.• F - Transfers prying loads.• B - Pushes piston.• C - Absorbs partial impact loads.• M - Eliminates cross bolts.• G -. L - Dampens shock loads.• E - Replaceable as required.• H - Guidance system.• N - Directs flow for hammer.• D - Maintains oil volume.• A - Sales