Shot-blasting Machine Bucket Loader With Cushioned Loading
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Solution Overview
Problem
In existing shot-blasting machines, work pieces are damaged and noisy impacts occur due to high-speed collisions with the inner walls or other pieces when loaded into an inclinable rotary drum, as the bucket loader must be significantly inclined, causing work pieces to fall and crash.
Innovation Solution
A shot-blasting machine design featuring a bucket loader with a guiding mechanism and adjustable opening, allowing work pieces to be gently dropped into the drum from a lower level, reducing impacts and noise, and incorporating a labyrinthine structure with an elastic sealing compound to manage abrasive particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bucket loader is significantly inclined to enable work pieces to tumble by their own weight, then the work pieces can be loaded into the rotary drum without external force, but the work pieces fall at a high rate and crash onto the inner peripheral wall or bottom wall, causing damage and noise
Solution Approach 1:
The patent applies beforehand cushioning by providing a cushioning member (rubber bumper) that contacts the inner peripheral wall of the rotary drum. This cushioning member absorbs impact energy when work pieces fall and collide with the drum wall, preventing direct damage to the work pieces and reducing noise. The cushioning effect is prepared in advance before the actual impact occurs.
2Ease of operation
If the bucket loader is significantly inclined to enable work pieces to tumble by their own weight, then the loading process becomes simpler, but the work pieces are significantly separated and brush against each other, causing damage
Solution Approach 1:
The cushioning member is positioned to contact the inner peripheral wall before work pieces can collide with it. When work pieces fall and separate during tumbling, the cushioning member provides a soft contact surface that prevents harsh collisions between work pieces and the drum wall, thereby maintaining work piece integrity.
3Device complexity
If the bucket loader is positioned at a great distance from the inner peripheral wall or bottom wall, then the bucket loader structure is simpler, but the work pieces fall down at a relatively high rate, causing crashes and damage
Solution Approach 1:
The cushioning member is installed on the inner peripheral wall of the rotary drum to provide impact absorption. This allows the bucket loader to maintain a simpler structure with greater distance from the wall, while the cushioning member compensates for the increased drop height by absorbing impact energy when work pieces reach the drum.
4Use of energy by moving object
If the bucket loader is significantly inclined, then gravity can load work pieces into the drum, but noisy hitting sounds occur due to work pieces crashing
Solution Approach 1:
The patent converts the harmful impact noise into a beneficial cushioned impact by introducing the rubber bumper as a cushioning member. The noisy hard impact between work pieces and the metal drum wall is transformed into a quieter, cushioned impact that absorbs energy through deformation of the rubber material, thereby reducing noise while maintaining the gravity-based loading mechanism.
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 machine effectively minimizes damage to work pieces and noise from collisions by controlled loading and sealing mechanisms, enhancing the shot-blasting process.
Implementation Method 1
an elastic sealing compound fitted along the inner edge of the flapper to close any gap between the labyrinthine structure and the inner edge of the flapper
Implementation Method 2
The guiding mechanism includes a hydraulic cylinder
Implementation Method 3
a flapper for opening and closing the top opening of the drum
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A loader arrangement 7 of a shot-blasting machine includes a bucket loader 29 having a tip opening that can be opened and closed by means of a lid 35. The loader arrangement 7 also includes a swivel arm 32, which is vertically and pivotally attached to a frame 4 via a linkage 31, for vertically swiveling the bucket loader 29, and a chain block 34 for swiveling the arm 32. Once the bucket loader 29 has reached the upper position above a rotary drum 5 by means of the swivel arm 32, a guide means 30, which is attached to the arm 32, allows the bucket loader 29 to approach the drum 5 through its top opening by driving a hydraulic cylinder 33, while the tip of the bucket loader 29 is opposed to the bottom wall of the drum 5. Once the tip of the bucket loader 29 is close to the bottom wall or the inner peripheral wall of the drum 5, the lid 35 is opened to drop the work pieces in the bucket loader 29 into the drum 5. Because the work pieces thus tumble from the low level relative to the bottom wall or the inner peripheral wall of the drum 5, the impact of the work pieces being dropped can be inhibited, and thus damage to the work pieces and the noise of the sounds of hitting can be reduced.