Hand-operated tunnel door structure of test section

Abstract

The invention provides a hand-operated tunnel door structure of a test section. The hand-operated tunnel door structure comprises a door body, a door-spindle connecting rod, a self-locking mechanism base, a handle, a door frame, sealing strips, an inserting pin mechanism and a ratchet self-locking mechanism, wherein the inserting pin mechanism and the ratchet self-locking mechanism are arranged on the frontage of the door body; the inserting pin mechanism comprises first pin-hole bases, second pin-hole bases, inserting pins, connecting rods and a rotating disc; the rotary disc is arranged in the center of the door body; the first pin-hole bases, the second pin-hole bases, the inserting pins and the connecting rods in six groups are uniformly distributed around the door body, wherein each group comprises one first pin-hole bases, one second pin-hole bases, one inserting pins and one connecting rod; one end of each connection rod is connected with the rotating disc, and the other end is articulated with each inserting pin; the inserting pins are arranged in the corresponding first pin-hole base and the corresponding second pin-hole bases and can slide in pin holes of the first pin-hole base and the second pin-hole bases; the first pin-hole bases are fixed on the door body, and the second pin-hole bases are fixed on a tunnel body. The hand-operated tunnel door structure of the test section has a good sealing performance, can be used for sealing the tunnel door easily, conveniently and reliably and has the characteristics of simple structure, low cost, convenience for maintenance and high reliability.

Description

technical field [0001] The invention relates to a manual cabin door structure for a test section, in particular to a manual cabin door structure for a test section with a self-locking function. Background technique [0002] In the wind tunnel test, the front of the test section is connected with the nozzle, and the rear is connected with the diffuser, and its interior is used to place and observe the test model. In order to meet the test requirements, hatches, observation windows, cable blind plates, etc. are usually installed on the bulkhead of the test section. When designing the test section, there are high requirements for its sealing performance. Among them, the hatch is the main seal of the test section. part. [0003] Commonly used hatch door opening methods are electric and manual. Although the electric hatch door has a high degree of automation, it requires corresponding control equipment and control procedures. The structure is complicated, the cost is high, the m...

AI Technical Summary

Problems solved by technology

[0004] 1) There is only one pressing point, which leads to uneven pressing force of the hatch on the sealing strip, which easily affects the sealing effect of the test section;

[0005] 2) When the wind tunnel is working, especially when it is started and stopped, the air flow is disordered, and the impact and vibration on the cabin door are relatively large, which may cause the bolt to become loose;

[0006] 3) When the hatch door is large in size and weight, it is often laborious and not portable enough to lock the hatch door by using a clamp and latch

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