Construction Machine Exhaust Post-Treatment Mounting Frame
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Solution Overview
Problem
Conventional construction machines lack sufficient rigidity in supporting exhaust gas post-treatment devices, leading to instability and reduced mounting accuracy of exhaust pipes, which affects the efficiency of exhaust gas treatment.
Innovation Solution
A post-treatment device mounting frame with a four-point support system, including front and rear mounting legs connected by a deck, provides enhanced rigidity and accuracy for mounting the exhaust gas post-treatment device, while a vibration isolating member supports the engine and a partition member separates the hydraulic pump from the exhaust gas post-treatment device to prevent hydraulic oil adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the exhaust gas post-treatment device is mounted on a bracket on the revolving frame, then the device can be installed, but the rigidity is insufficient causing the device to swing and reducing mounting accuracy
Solution Approach 1:
The mounting structure is divided into multiple support points (front mounting leg and rear mounting leg) distributed across the revolving frame, creating a multi-point support system that improves both stability and precision
Solution Approach 2:
The mounting structure extends in the width direction of the revolving frame, utilizing the lateral dimension to distribute the load and improve rigidity through a wider base configuration
2Productivity
If the exhaust gas post-treatment device size is increased to improve purification performance, then the treatment efficiency improves, but the device becomes heavier and requires more robust mounting
Solution Approach 1:
The heavy device is supported by multiple discrete mounting points (front and rear legs) rather than a single bracket, distributing the weight load across multiple locations on the revolving frame
Solution Approach 2:
The mounting structure integrates with existing structural elements of the revolving frame, combining the mounting function with the frame's load-bearing capacity
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
The solution ensures stable and accurate mounting of the exhaust gas post-treatment device, improving the rigidity and reliability of the construction machine by preventing misfires due to hydraulic oil adhesion and enhancing the efficiency of exhaust gas treatment.
Implementation Method 1
supporting the engine through a vibration isolating member
Implementation Method 2
a partition member separating the hydraulic pump from the exhaust gas post-treatment device to prevent hydraulic oil adhesion
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A post-treatment device mounting frame (20) on which an exhaust gas post-treatment device (13) is mounted is constituted by a front mounting leg (21), a rear mounting leg (24), and a deck (27) connecting the front and rear mounting legs (21) and (24) to each other. A vertical leg part (22) of the front mounting leg (21) is mounted on a front vertical leg part mounting plate (5F) of a right front extension beam (5E2). A lateral leg part (23) of the front mounting leg (21) is mounted on a front lateral leg part mounting plate (5M) of a right front engine support bracket (5K). A vertical leg part (25) of the rear mounting leg (24) is mounted on a rear vertical leg part mounting plate (5G) of a right rear extension beam (5E3). A lateral leg part (26) of the rear mounting leg (24) is mounted on a rear lateral leg part mounting plate (5N) of a right rear engine support bracket (5L). Therefore, the post-treatment device mounting frame (20) is firmly mounted in a state of four-point support on a revolving frame (5).