Device for fixing wind tunnel spire
A wind tunnel and rubber cushion technology, applied in the field of base fixing devices, can solve the problems of being easily blown down by the wind and testing wind speed, etc., and achieve the effects of strong anti-friction ability, improved compressive stability, and reliable fixation
Active Publication Date: 2016-11-23
DALIAN UNIV OF TECH
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- Abstract
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to propose a more reliable fixing method for the existing common fixing methods of wind tunnel wedges, which are easy to be blown down by the wind or the test wind speed is low, and can greatly increase the test wind speed
Method used
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[0015] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.
[0016] Such as figure 1 As shown, a rubber pad 3 is embedded in the groove 2 of the detachable base 1, and a rubber pad 4 is pasted on the bottom surface of the base.
[0017] Such as figure 2 Shown, weld a threaded rod 6 (diameter is generally 2-3cm, length 8-10cm) at the top of the vertical shaft 5 of the wedge, a nut 7 is placed on the screw rod, and the metal cap 8 is buckled on the top of the screw rod 6, and the A rubber pad 9 is pasted on the top of the cap 8 .
[0018] Such as image 3 As shown, the wedge main body 10 is consolidated into a whole with the wedge vertical shaft 5 and the screw rod 6, and the detachable base (1-4) is placed flat on the designated position, and the wedge is vertically inserted into the groove 2, Press it against the cushion 3. By rotating the nut 7 on the screw mandrel 6, the ...
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Abstract
The invention relates to a device for fixing a wind tunnel spire, which belongs to a wind tunnel wind field simulation device and a method. The device comprises a detachable base, a metal cap, a screw, a nut, rubber cushions and a spire vertical shaft, wherein the detachable base is a metal plate provided with a T-type groove and arranged at the bottom part of the spire vertical shaft, and a layer of rubber cushion is adhesive in the T-type groove and the bottom part of the metal plate; a layer of rubber cushion is adhesive to the top part of the metal cap; one end of the spire vertical shaft is fixed in the T-type groove and the other end is connected with the screw, and the screw is covered inside the metal cap; and through screwing the nut on the screw, the metal cap buckled at the upper part of the screw is pushed to move upwardly to be tightly pressed with the top part of the wind tunnel, and the spire is fixed. The base groove restrains local deformation instability of the spire, the base increases the contact area between the bottom part of the spire and the bottom surface of the wind tunnel, and the stability of the spire is enhanced; and due to the multiple layers of rubber cushions, contact between the spire and the top plate and the bottom plate of the wind tunnel is more uniform, the anti-slip capability between the two is enhanced, and the spire can be more reliably fixed.
Description
technical field [0001] The invention relates to a new method for reliably fixing a wedge device used in a wind tunnel test, in particular to adding a base fixing device with a T-shaped groove for the wedge, and in the groove of the base, the bottom plate of the base and the top surface of a metal cap. A layer of rubber cushion is added to make the fixing of the wedge more reliable. Background technique [0002] Wind tunnel test is one of the important methods to study the wind resistance performance of structures. In the passive simulation of the atmospheric near-earth boundary layer, fixed wedges are often used as turbulence generators. The usual practice in the wind tunnel laboratory is: first place the wedge vertically at the designated position, the lower part of the wedge is directly in contact with the bottom plate of the wind tunnel, and then cover the top screw rod with a grooved cylinder (hereinafter referred to as the metal cap) , generally made of aluminum), and ...
Claims
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Inventor 许福友袁良东葛晓萌张哲
Owner DALIAN UNIV OF TECH