Limited torque locking strip

Abstract

The invention discloses a limited torque locking strip, and relates to the technical field of locking strips. The limited torque locking strip comprises an adjusting screw, a fixed wedge block, a movable wedge block, a limiting adjusting head, and a locking adjusting sleeve, wherein the fixed wedge block and the movable wedge block are connected to the adjusting screw in series, the limiting adjusting head is fixedly arranged at one end of the adjusting screw and used for loosening adjusting, the locking adjusting sleeve sleeves the outer wall of the limiting adjusting head and is used for locking adjusting, the outer wall of the limiting adjusting head is in a circular surface shape, the locking adjusting sleeve drives the limiting adjusting head and the adjusting screw in the circumferential direction, relative to the axial direction of the adjusting screw, of the circular surface to rotate for locking, and the locking adjusting sleeve and the limiting adjusting head have the rotating and slipping tendency when preset locking force is reached. The locking adjusting sleeve in the sleeving and rotating form is arranged on the limiting adjusting head of the adjusting screw, so thatlocking adjusting and after-locking slipping are realized, the mode of adjusting the limited torque is changed, and locking operation and loosening operation are better facilitated.

Description

technical field [0001] The invention relates to the technical field of locking strips, in particular to a limited moment locking strip. Background technique [0002] The locking bar is commonly used in military equipment to ensure that military electronic equipment can work stably under high-speed vibration. The limited torque locking strip is the most high-end series of locking strips. It was born to meet the requirements of secondary maintenance and rapid maintenance in military maintenance, and can complete the installation force consistency of electronic equipment under harsh conditions. [0003] When the electronic equipment is reinforced, the limited torque locking strip is used, and the torque wrench is not needed. The ordinary wrench can achieve the locking force to quickly reach the preset value. It will not be due to different installers and different installation forces, resulting in failure to meet the requirements of the locking force, or exceeding the requirem...

AI Technical Summary

Problems solved by technology

It will not be due to different installers and different installation forces, resulting in failure to meet the requirements of the locking force, or exceeding the requirements of the locking force, resulting in installation errors, resulting in no locking, and electronic equipment loosening in vibration, resulting in damage to the equipment

Or the lock is too tight, the module is deformed / the locking bar is locked, and it takes more time to disassemble the device when maintaining the device

[0004] At present, the limited torque locking strips on the market are mainly imported from the United States (such as the Calmark brand), and there is no domestic limited torque locking strip; because the limited torque locking strips are all imported, the price is very expensive, and the delivery period is long ( It takes at least two months), which cannot meet the self-sufficiency needs of the national defense military industry

In terms of product structure and performance, such as figure 1 and 2 As shown, this type of imported limited torque locking strip products are all realized by the ratchet mechanism 7, which also depends on the strength of the material. After the ratchet mechanism reaches the set locking limit, it uses the slipping mode to realize the limit, so the height of the addendum There will be hidden dangers of wear. Once the wear reaches a certain level, the ratchet mechanism will fail, resulting in the failure of the locking bar to loosen the function, and may even cause the entire module to be scrapped.

Moreover, this type of imported limited torque locking strip product mainly depends on the elastic force of the compression spring 8 in the setting of the torque force. not very free

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