Hammer Bit Barrel Adaptor with Replaceable Tooth for Impact Protection
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Solution Overview
Problem
Hydraulic hammer bits are prone to damage and require frequent replacement due to high-pressure and heat exposure during demolition tasks, leading to significant maintenance costs.
Innovation Solution
A barrel adaptor assembly comprising a cylindrical body, a sleeve, steel plates, and a nosepiece with a removably affixed tooth, coupled to the hammer bit via a pin, allowing limited movement and enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hammer bit is used directly on a hydraulic hammer, then the hammer bit can perform demolition tasks, but the hammer bit is subject to damage and requires frequent replacement
Solution Approach 1:
The invention divides the hammer bit assembly into separate replaceable components: a barrel adaptor that remains on the hammer and multiple interchangeable tooth assemblies. The teeth are the wear-prone elements that can be replaced independently, while the expensive barrel and hydraulic components are protected and reused. This segmentation allows only the consumable teeth to be replaced, extending the overall service life of the hammer bit assembly.
Solution Approach 2:
The invention applies the disposable principle by making the teeth the sacrificial, replaceable component while preserving the expensive barrel adaptor. The teeth are designed to be replaced when worn, while the barrel adaptor serves as a durable carrier that remains in service. This approach treats the teeth as short-living objects that protect the longer-living barrel, reducing overall maintenance costs.
2Power
If the hammer bit withstands 10,000 pound explosive energy and heat, then the hammer bit can perform demolition tasks, but the hammer bit is subject to damage from the explosive energy and heat
Solution Approach 1:
The invention applies beforehand cushioning by designing the barrel adaptor with features that absorb and distribute the explosive energy and heat before they can damage the hammer bit. The adaptor acts as a protective buffer between the hydraulic hammer's energy delivery system and the vulnerable tooth assembly, cushioning the impact of high-stress conditions.
Solution Approach 2:
The barrel adaptor serves as an intermediary component between the hydraulic hammer and the hammer bit teeth. It mediates the transmission of explosive energy and heat, protecting the teeth from direct exposure to the harshest conditions while still allowing effective hammering action to be transmitted to the demolition material.
3Duration of action of stationary object
If the tooth is removably affixed to the nosepiece, then the tooth can be replaced to extend hammer bit life, but the coupling mechanism adds device complexity
Solution Approach 1:
The removable tooth assembly is segmented into separable components (tooth and nosepiece) connected by a simple coupling mechanism. This segmentation enables easy replacement of just the tooth when worn, without requiring replacement of the entire hammer bit assembly. The complexity is minimized by using straightforward mechanical fastening rather than permanent or complex adjustable connections.
Data Source
AI summary
An assembly of a barrel adaptor and a hammer bit, and components thereof, for use with a hydraulic hammer. The barrel adaptor is coupled about the hammer bit by means of a pin, and includes a cylindrical body, a ledge formed between an upper segment and a lower segment of the cylindrical body, and a pair of apertures extending through opposing sides of the cylindrical body and aligned with a keyway of the hammer bit, through which the pin extends in coupling. A sleeve is movably secured about a portion of the upper segment of the cylindrical body. Affixed within the bottom of the cylindrical body are one or more steel plates, and at a distal end a nosepiece, with a tooth removably affixed to the nosepiece.