Hydraulic Driving Device Power Sharing Suction Car

Solution Overview

Problem

Existing hydraulic driving systems in suction cars lack efficient oil distribution and actuation methods, leading to limitations in power sharing between traveling and suction actuators, which affects the car's mobility and capacity for large collection tasks.

Innovation Solution

A hydraulic driving device with a dual connection channel HST circuit and a switching valve that allows oil to be shared between traveling and suction actuators, enabling flexible power distribution and increased capacity for suction operations without the need for a dedicated hydraulic pump for the suction actuator.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a dedicated hydraulic pump is provided for the suction actuator, then the suction capacity is improved, but the device complexity and cost increase

Engineering Contradiction:

Improvesuction capacityVSAvoidhydraulic system complexity

Core Design Contradiction:

PowerVSDevice complexity

Solution Approach 1:

The traveling drive pump is designed to serve dual purposes: driving the traveling motor for vehicle mobility and supplying hydraulic oil to the suction actuator for suction operations. This multi-functionality eliminates the need for a dedicated hydraulic pump, reducing system complexity while maintaining sufficient suction capacity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the hydraulic power source function into the traveling drive pump, combining two previously separate functions (traveling propulsion and suction actuation) into a single pump system. This consolidation reduces the number of components and simplifies the overall hydraulic system architecture

Inventive Principle:

Principle #5Merging (Combining)

2Power

If a dedicated hydraulic pump is provided for the suction actuator, then the suction power is improved, but the manufacturing cost increases

Engineering Contradiction:

Improvesuction powerVSAvoidmanufacturing cost

Core Design Contradiction:

PowerVSEase of manufacture

Solution Approach 1:

The traveling drive pump is designed to serve dual purposes: driving the traveling motor for vehicle mobility and supplying hydraulic oil to the suction actuator for suction operations. This multi-functionality eliminates the need for a dedicated hydraulic pump, reducing system complexity while maintaining sufficient suction capacity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the hydraulic power source function into the traveling drive pump, combining two previously separate functions (traveling propulsion and suction actuation) into a single pump system. This consolidation reduces the number of components and simplifies the overall hydraulic system architecture

Inventive Principle:

Principle #5Merging (Combining)

3Power

If the suction actuator is actuated by a separate hydraulic system, then the suction performance is improved, but the ease of operation decreases due to complex switching

Engineering Contradiction:

Improvesuction performanceVSAvoidoperation simplicity

Core Design Contradiction:

PowerVSEase of operation

Solution Approach 1:

The patent employs a dynamic switching mechanism that automatically directs hydraulic oil flow based on operational mode requirements. The switching valve responds to operational signals to seamlessly transition between traveling and suction modes, maintaining ease of operation while enabling high-performance suction capability when needed

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration enhances the suction car's mobility and capacity by allowing efficient power sharing between traveling and suction actuators, increasing the inner volume of the hopper for larger collections and enabling quick switching between suction and traveling modes.

Implementation Method 1

a hydraulic pump that supplies oil (operating oil) to the hydraulic motor

Methodology Applied

Scientific EffectHydraulic pressure: Pressure Increase

Implementation Method 2

a switching valve switchable to a first operation state and a second operation state, the switching valve allowing oil discharged from the first traveling drive pump to the first connection channel to be supplied to the first traveling motor in the first operation state and allowing oil discharged from the first traveling drive pump to the first connection channel to flow into the supply channel and be supplied to the suction actuator in the second operation state

Methodology Applied

Scientific EffectFluid flow control: Valve

Data Source

PatentUS11486105B2Hydraulic driving device of suction car

Publication Date: 2022.11.01 KATO WORKS CO LTD

AI summary

A hydraulic driving device of a suction car includes a HST circuit, a suction actuator, a supply channel and a switching valve. In the HST circuit, a first connection channel and a second connection channel connect between a traveling drive pump and a traveling motor in a closed circuit. The suction actuator suction drives a suction device by being actuated by a hydraulic pressure. The switching valve allows oil discharged from the traveling drive pump to the first connection channel to be supplied to the traveling motor in a first operation state. The switching valve allows oil discharged from the traveling drive pump to the first connection channel to flow into the supply channel and be supplied to the suction actuator in a second operation state.