The temperature impact test chamber's basket moving device is a highly engineered system composed of several key components, including the driving unit, sealing mechanisms, and the sample holder assembly. These elements are carefully integrated to ensure smooth and efficient movement between different testing chambers, with the transition time between one chamber and another being less than 10 seconds.
The driving unit consists of a cylinder, roller, wire rope, air source triple unit, a three-position five-way solenoid valve, and other pneumatic parts. The air pressure is adjusted via the air source triple unit, allowing precise control over the cylinder’s movement through the solenoid valve. The top of the cylinder is connected to the wire rope, which is fixed at the top of the basket via a roller. This combination ensures reliable and controlled motion of the basket during testing.
The top sealing device is responsible for maintaining an airtight seal at the top of the basket. When the basket moves downward, it naturally seals against the box partition due to its own weight. A silicone sealing strip is installed at the bottom and secured using rivets. Insulation is provided by glass fiber cotton placed on the top, helping to retain heat. A diagonal limit block is also included to prevent excessive vertical movement or swaying of the basket. Since this component is located in the high-temperature chamber, the materials used must be suitable for extreme thermal conditions.
The bottom sealing device serves a similar function but is positioned at the base of the basket. It forms a seal with the box partition using the pulling force from the cylinder. Its construction is identical to that of the top seal. However, since it is located in the low-temperature chamber, the materials must be able to withstand cold environments without losing their integrity or performance.
The sample holder assembly includes the sample holder itself, vertical columns, and guide rails. The columns connect the top and bottom sealing devices into a single structural unit. The guide rails are mounted on the columns and can be adjusted vertically to accommodate different sample heights. The sample holder is placed on these rails, allowing for easy placement and adjustment of test samples during the process.
This well-designed moving mechanism ensures accurate and repeatable temperature impact testing, making it essential for quality assurance and reliability testing in various industries.
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