驗貨挖掘機時，主要是檢查其結構完整性、功能性能、機械部件、操作系統以及安全性等多個方面。以下是挖掘機驗貨的詳細步驟：

1. 外觀檢查

外觀損傷： 檢查挖掘機的外觀，確保沒有明顯的外部損傷、凹陷或劃痕。特別是履帶、發動機罩、液壓系統外殼等地方，檢查是否有撞擊痕跡。

焊接點和連接部件： 檢查挖掘機的焊接點、螺絲連接部位是否牢固，沒有松動或斷裂跡象。任何焊接部位的裂縫或脫落都可能影響設備的穩定性。

2. 液壓系統檢查

液壓油： 檢查液壓油的油位和油質。油位過低或油質差（如混入雜質、出現泡沫）可能會導致液壓系統失效或工作不穩定。

液壓管路： 檢查液壓管路是否有漏油現象，管道是否老化或損壞。特別是高壓管路和接頭部分。

液壓泵和馬達： 確保液壓泵、馬達工作正常，轉動時無異常噪音或振動。

3. 發動機檢查

發動機狀態： 檢查發動機外觀，確保沒有漏油、漏水等現象。檢查發動機機油、冷卻液、空氣濾清器等部件的狀態。

啟動檢查： 啟動發動機，聽發動機聲音是否平穩，是否有異常噪音。發動機啟動后應迅速平穩運轉，煙霧應少且無異味。

排放檢查： 檢查排氣系統，確保排放符合標準，無過多黑煙或異味。

4. 操作系統與控制檢查

駕駛室檢查： 確認駕駛室內部整潔、座椅舒適，操作手柄和踏板是否正常。檢查儀表盤上的各項指示燈、顯示屏是否正常工作。

液晶顯示系統： 如果挖掘機配備了液晶顯示系統，檢查其是否正常顯示操作信息，如油溫、發動機轉速、液壓系統壓力等。

操作控制： 檢查控制手柄、按鈕、操縱桿等是否靈活且響應迅速。操作系統是否順暢，無卡滯現象。

5. 底盤和履帶檢查

履帶狀況： 檢查履帶的磨損程度和張緊度。履帶板是否有裂紋或缺損，履帶鏈條是否松弛或有銹蝕。

輪轂和驅動裝置： 檢查輪轂是否有松動，傳動軸和驅動裝置的潤滑是否到位，確保驅動系統運轉順暢。

底盤清潔度： 確保底盤清潔，無泥土、油污等雜物堆積，尤其是履帶和轉向系統附近。

6. 挖掘臂和鏟斗檢查

挖掘臂檢查： 檢查挖掘臂的鉸接部位、油缸連接部位、焊接點等是否完好，是否有裂紋、磨損或變形。

鏟斗檢查： 檢查鏟斗的磨損程度，特別是鏟斗前緣的磨損情況。如果是二手設備，鏟斗的磨損嚴重可能影響使用效果。

油缸檢查： 檢查油缸是否有漏油現象，油缸的密封是否完好。檢查液壓油缸在伸縮、旋轉時的運動是否平穩。

7. 電氣系統檢查

電池檢查： 檢查電池電壓和接線是否牢固，電池無腐蝕，確保電力系統正常。

電氣元件： 檢查所有電氣元件（如燈光、警示燈、電子傳感器等）是否正常工作，尤其是在液晶顯示、傳感器和報警系統等方面。

8. 轉向和制動系統檢查

轉向系統： 檢查轉向系統是否靈活，操作時是否有卡滯或異常聲音。確保轉向機油充足，液壓轉向系統工作正常。

制動系統： 確保制動系統有效，檢查剎車油液位和剎車片的磨損情況。測試剎車時，感受剎車是否靈敏、穩定。

9. 測試操作

功能測試： 在沒有負載的情況下，進行一次全面的功能測試，檢查所有液壓功能、轉向功能、操作功能是否正常。

噪音和振動： 啟動機器并進行空載運行，檢查機器在工作時是否有過大的噪音或異常振動。正常運行時，機器應該保持平穩，不應發出不正常的噪音。

10. 檢查操作手冊和維修記錄

操作手冊： 確保設備配備完整的操作手冊，并且手冊中列明了設備的維護周期、保養建議等。

維修記錄： 如果是二手挖掘機，查看其維修和保養記錄，確保設備沒有重大維修歷史，并且有定期的保養和檢查記錄。

在驗貨挖掘機時，務必關注其結構、液壓系統、發動機狀態、操作系統、底盤、履帶、鏟斗、轉向和制動系統等多個方面。通過全面的檢查，確保挖掘機的各項功能正常，機械部件無損壞，液壓系統穩定，且沒有安全隱患。進行現場操作測試是驗貨過程中ue的步驟，確保設備在實際使用中沒有問題。

Inspecting an excavator involves a thorough check of its mechanical, hydraulic, and electrical systems, as well as its overall structural integrity and operational functions. Whether you're buying a new or used excavator, here’s a comprehensive guide on how to inspect it:

1. Visual Inspection (Exterior Check)

Overall Condition: Inspect the excavator's exterior for any obvious signs of      damage, including dents, cracks, rust, or worn-out parts. Check for any      leaks or stains, particularly around the engine compartment and undercarriage.

Chassis and frame: Look for any structural damage or bent parts in the frame,      particularly around the boom, arm, and bucket areas. Ensure there are no      cracks or bends that could compromise the structural integrity.

Undercarriage (Tracks      or Wheels):

Tracks: For tracked excavators, inspect the track shoes for wear,       cracks, and damage. Check if the tracks are evenly worn and whether they       are properly tensioned. Look for loose or missing track bolts.

Rollers and Idlers: Check the rollers and idlers for excessive wear or leakage       from the seals.

Final Drive and       Gearbox: Check for any leakage or damage in       the final drive gear system.

Wheels (for wheeled       excavators): Inspect the tires for even wear,       cracks, and punctures.

2. Engine and Powertrain Inspection

Engine Condition:

Visual Check: Look for leaks, oil stains, or damage around the engine       block. Check the engine oil level and ; it should be clean and at       the correct level.

Start the Engine: Start the engine and listen for unusual noises. A healthy       engine should start smoothly and run Excessive smoke (especially       black or blue) could indicate internal problems.

Exhaust and       Emissions: Check the exhaust for excessive       smoke. Black smoke may indicate improper combustion, while blue smoke       could suggest engine oil burning.

Cooling System: Check the coolant level and inspect the radiator for any signs      of damage or leaks. Ensure that the cooling fan is functioning properly.

Fuel System: Inspect the fuel lines and filter for any leaks or blockages.      Fuel should be clean and free of contaminants.

Hydraulic System: Look for leaks or cracks in the hydraulic hoses, lines, and      cylinders. Hydraulic fluid should be at the correct level.

3. Hydraulic System and Components

Hydraulic Oil Level: Ensure the hydraulic oil is at the recommended level and free      from contamination (look for clarity and check for metal shavings or other      particles).

Hydraulic Cylinders: Check all hydraulic cylinders (on the arm, boom, and bucket)      for leaks, dents, or damage. Ensure that seals are intact and there is no      excessive play in the joints.

Hydraulic Pump: Inspect the hydraulic pump for any unusual noises or leaks.      The pump should run smoothly without significant vibration or noise.

Hydraulic Filters: Inspect hydraulic filters and change them if necessary.      Clogged filters can cause hydraulic system failure.

4. Boom, Arm, and Bucket Inspection

Boom and Arm: Check the condition of the boom and arm for any signs of wear,      cracks, or damage. Look for excessive play or movement in the joints,      which could indicate worn-out bushings or pins.

Bucket: Inspect the bucket for excessive wear, cracks, and      deformations, especially on the cutting edges. Check the teeth for wear,      and ensure they are securely attached. Look for signs of damage to the      bucket's back or side walls.

Pins and Bushings: Check the pins and bushings for wear or play. Worn-out pins      can cause the machine to lose stability and precision.

Quick Coupler: If the excavator has a quick coupler system, ensure it      operates smoothly and locks securely.

5. Cabin and Operator Controls

Cabin Interior: Inspect the cabin for cleanliness, visibility, and safety.      Check that windows and mirrors are intact and free of cracks or damage.

Seat and Controls: Ensure the operator seat is adjustable, comfortable, and in      good condition. Test all operator controls (joysticks, pedals, levers) for      smooth operation and responsiveness. They should move freely without      resistance or sticking.

Dashboard and      Instruments: Check all gauges (engine      temperature, fuel level, hydraulic pressure) and warning lights to ensure      they function correctly. The dashboard should display accurate readings.

Air      Conditioning/Heating: If the cabin has air      conditioning or heating, ensure it works properly and provides a      comfortable environment for the operator.

6. Electrical and Lighting System

Battery: Check the battery terminals for corrosion or loose      connections. Ensure that the battery is securely mounted and fully      charged.

Wiring: Inspect electrical wiring for damage, fraying, or wear,      especially around high-traffic areas where wires can be pinched or exposed      to elements.

Lights and Signals: Test all lights (headlights, brake lights, work lights, turn      signals) to ensure they are functioning properly.

7. Operational Test

Test Movement: While the excavator is in operation, test all movements,      including the boom, arm, bucket, swing, and tracks (or wheels). The      machine should move smoothly without any jerky or delayed responses.

Hydraulic Performance: Test the hydraulic functions, including lifting, digging, and      lowering, to make sure the hydraulics are responsive and perform as      expected.

Noise Levels: Pay attention to any unusual noise while the machine is in      operation. Excessive noise could indicate issues with the engine,      hydraulics, or moving parts.

Check for Leaks: While the excavator is running, check for any visible      hydraulic, fuel, or coolant leaks, as well as any abnormal vibrations.

8. Brakes and Steering

Braking System: Test the excavator’s braking system by activating it and      ensuring the machine stops immediately and smoothly. Listen for any      unusual sounds like grinding or squeaking.

Steering: Check the steering controls for responsiveness. Test turning      the excavator both in forward and reverse to ensure it moves smoothly and      without hesitation.

9. Service and Maintenance Records (for used machines)

Service History: If purchasing a used excavator, request detailed service and      maintenance records. Verify that routine maintenance has been performed      and that major components have been serviced or replaced when needed.

Inspection Reports: Ask for any past inspection reports or certificates of the      excavator to ensure it meets all necessary safety standards and has passed      prior checks.

10. Final Check: documentation and Certifications

Serial Numbers: Verify that the serial number on the excavator matches the      documentation. This ensures the machine is legitimate and not stolen or      subject to any disputes.

Compliance and Certifications: Make sure the excavator complies with local safety and      environmental regulations, including emission standards and operator      safety certifications.

Summary:

Inspecting an excavator involves checking the condition of its key systems (engine, hydraulics, electrical, etc.), ensuring smooth functionality of the moving parts, and confirming that the machine meets safety and operational standards. This checklist is essential to avoid costly repairs down the line and to ensure the excavator will perform reliably on the job site.

Inspecting an excavator involves a thorough check of its mechanical, hydraulic, and electrical systems, as well as its overall structural integrity and operational functions. Whether you're buying a new or used excavator, here’s a comprehensive guide on how to inspect it:

1. Visual Inspection (Exterior Check)

Overall Condition

Chassis and frame

Undercarriage (Tracks or Wheels):

Tracks

Rollers and Idlers

Final Drive and Gearbox

Wheels (for wheeled excavators)

2. Engine and Powertrain Inspection

Engine Condition:

Visual Check

Start the Engine

Exhaust and Emissions

Cooling System

Fuel System

Hydraulic System

3. Hydraulic System and Components

Hydraulic Oil Level

Hydraulic Cylinders

Hydraulic Pump

Hydraulic Filters

4. Boom, Arm, and Bucket Inspection

Boom and Arm

Bucket

Pins and Bushings

Quick Coupler

5. Cabin and Operator Controls

Cabin Interior

Seat and Controls

Dashboard and Instruments

Air Conditioning/Heating

6. Electrical and Lighting System

Battery

Wiring

Lights and Signals

7. Operational Test

Test Movement

Hydraulic Performance

Noise Levels

Check for Leaks

8. Brakes and Steering

Braking System

Steering

Service History

Inspection Reports

10. Final Check: documentation and Certifications

Serial Numbers

Compliance and Certifications

Summary: