Pump & Reducer for Mixer Truck
3 week ago
Product details
PV22 PV23 PV070
PMP 6.5R120CP PMP 7.1R120CP
5433 4633 6433
4623 5423 6423
P-4300 P-5300 P-7300
PMB M90/PMB M110
T90M75/T90M100
TMM070/TMM089
A4VTG71 A4VTG90
PLM-10 PLM-12 PLM-16
REXROTH AA2FM80 AA2FM90
PSVS90A PSVS90C
PMP6.5R120 PMP7.5R PMP7Y120
MF22 MF23 MFO70
Pump and Reducer for Mixer Truck
Thehydraulic pumpandgear reducerare core power transmission components in concrete mixer trucks, working together to ensure stable operation of the mixing drum. Below is a detailed explanation of their functions, structures, technical parameters, and selection guidelines.
------
I. Core Functions
1. Hydraulic Pump
• Power Conversion: Converts mechanical energy from the engine into hydraulic energy to drive the hydraulic motor.
• Pressure & Flow Control: Provides stable high-pressure oil flow (typically ≥35 MPa) to ensure continuous torque output under varying loads.
• Typical Application: Uses variable displacement piston pumps (e.g., Rexroth A4VG series) with automatic displacement adjustment based on drum load for improved energy efficiency.
2. Gear Reducer
• Torque Amplification & Speed Reduction: Converts high-speed, low-torque output from the hydraulic motor into low-speed, high-torque rotation (typically ≥60 kN·m) to drive the mixing drum at 0–14 r/min.
• Support & Leveling: Rigidly connects to the drum via an output flange, bearing 2/3 of the drum’s weight while maintaining a stable installation angle.
• Shock Resistance: Features planetary gear transmission and a self-aligning swing mechanism (swing angle ±3°–±6°) to absorb vibrations and misalignment during vehicle operation.
------
II. Structure & Working Principles
1. Hydraulic System Composition
• Power Source: Engine → PTO (Power Take-Off) → Hydraulic Pump.
• Actuator: Hydraulic Pump → Hydraulic Motor → Gear Reducer → Mixing Drum.
• Control Components: Relief valves and directional valves regulate pressure and flow direction.
2. Reducer Internal Structure
• Planetary Gear Transmission: Multi-stage planetary gears (e.g., two-stage NGW planetary train) achieve high reduction ratios (45–144.3) and heavy-duty capacity.
• Flexible Mechanism: Crown gear couplings and self-aligning roller bearings (alignment angle up to 4°) compensate for installation errors and impact deformation.
• Lubrication System: Splash or forced lubrication ensures long-term gear operation under harsh conditions.
------
III. Key Technical Parameters
【表格】
Component Typical Specifications
Hydraulic Pump Displacement: 90–180 mL/r; Pressure: 35–40 MPa; Efficiency: ≥90%
Gear Reducer Max. Torque: 24–72 kN·m; Reduction Ratio: 45–144.3; Input Speed: ≤2,500 r/min; Weight: 185–420 kg
Drum Capacity 12–42 m³
------
IV. Selection & Matching Guidelines
1. Selection Based on Mixer Truck Capacity
• Small Trucks (8–12 m³): Use HJ240-HJ330 series reducers paired with 90–120 mL/r pumps.
• Large Trucks (16–42 m³): Use HJ400-HJ720 series reducers paired with 160–180 mL/r variable pumps.
2. Work Condition Adaptability
• Heavy-Duty Conditions: Prioritize planetary gear reducers (e.g., Bonfiglioli, PMP) for high shock resistance.
• Frequent Start/Stop: Choose reducers with self-aligning features to extend bearing and gear life.
3. Recommended Brands & Models
• International Brands: Rexroth (A4VG pumps), Bonfiglioli (309R/311R reducers).
• Domestic Brands: HJ series reducers (for 12–42 m³ drums), Lishile A4VG pumps.
------
V. Common Failures & Maintenance
1. Hydraulic Pump Failures
• Symptoms: Pressure fluctuations, increased noise.
• Causes: Oil contamination, port plate wear.
• Maintenance: Replace hydraulic oil every 2,000 hours; clean filters.
2. Reducer Failures
• Symptoms: Oil leakage, gear wear, swing mechanism jamming.
• Causes: Seal aging, bearing damage, excessive installation misalignment.
• Maintenance: Inspect seals and bearings; adjust output flange swing angle.
------
VI. Industry Trends
• Lightweight Design: Examples include PMB EC series reducers (40% weight reduction, 55% shorter length).
• Integrated Modules: Hydraulic pump + motor + reducer integration reduces installation space and leakage risks.
• Smart Monitoring: Embedded sensors monitor temperature, pressure, and vibration for predictive maintenance.
Similar Video Recommendation
<
>
You May Also Like
Bossgoovideo.com Contact Now
If you are interested in the product, contact Bossgoovideo.com for more information
- *To:
- Ningbo Hengnuo Hydraulic Drive Co.,Ltd
- *Message:
-
Submit
Disclaimer :
The information of Bossgoovideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of Bossgoovideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from
transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation.
If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.
Suppliers
Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
3 year
Main Product:
hydraulic motor ,
gear box,
hydraulic pump,
hydraulic valve ,
hydraulic winch,
hydraulic system
You May Also Like