Construction Machine Deck Layout for Urea Tank and Hose Reel Access
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Solution Overview
Problem
The existing arrangement of a grease supply device and a urea tank in construction machines complicates deck width reduction, hinders access to the hose reel, and makes it difficult to visually check the hose reel winding and supply water to the urea tank, due to spatial constraints and restricted deck width.
Innovation Solution
A construction machine design where the hose reel is positioned on the front side of the deck, and the urea tank is placed rearward, with the urea tank's water inlet oriented forward, allowing for a compact deck layout and improved access and visual inspection of the hose reel, while maintaining a reduced deck width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the urea tank is disposed in the front right portion (or front left portion) of the upper slewing body, then the exhaust gas purification function is provided, but the scale of the entire upper slewing body increases
Solution Approach 1:
The patent transitions from a conventional right-left arrangement to a front-rear arrangement along the longitudinal axis of the deck. By positioning the urea tank in the front-rear direction rather than the lateral direction, the deck width is preserved while still accommodating the exhaust gas purification function.
Solution Approach 2:
The patent segments the deck into distinct functional zones: the front side portion for the hose reel and grease supply device, and the rearward portion for the urea tank. This segmentation allows each component to be accessed independently without interfering with others, resolving the contradiction between functionality and compactness.
2Ease of operation
If the hose reel and grease supply source unit are arranged in the right-and-left direction, then they can be accessed, but the deck width cannot be reduced
Solution Approach 1:
The patent rearranges components from a lateral (right-left) configuration to a longitudinal (front-rear) configuration. The hose reel is positioned at the front side portion and the grease supply source unit at the rearward portion, utilizing the longitudinal dimension of the deck to reduce deck width while maintaining accessibility through the front opening.
3Area of stationary object
If the urea tank is disposed frontward of the grease supply source unit and hose reel, then the deck layout is compact, but access to the hose reel and visual check of winding become difficult
Solution Approach 1:
Instead of placing the urea tank at the frontmost position, the patent inverts the conventional arrangement by positioning it rearward of the hose reel. The hose reel is placed at the front side portion where it is easily accessible and visually inspectable through the front opening, while the urea tank occupies the rearward space.
4Area of stationary object
If the urea tank is disposed rearward of the hose reel and grease supply source unit, then the deck layout is compact, but access to the urea tank and water supply become difficult
Solution Approach 1:
The front opening of the deck serves multiple functions: it provides access to the hose reel for visual inspection and maintenance, and it also provides access to the water inlet of the urea tank for water supply. This multi-functionality resolves the contradiction by making the rearward-positioned urea tank accessible through the same front opening used for the hose reel.
Data Source
AI summary
Provided is a construction machine allowing a deck to be compact while facilitating water supply to a urea tank and access to a grease supply device. The construction machine includes a hose reel for grease supply disposed on a front-side portion of a deck of an upper slewing body, and a urea tank 30 disposed rearward of the hose reel on the deck and stores urea water for exhaust gas purification. The urea tank has a front surface provided with a water inlet for resupplying urea water. The hose reel is disposed deviated from the water inlet widthwise of the upper slewing body. The water inlet has a distal end located on the front side of a rear end of the hose reel.