Straight barrel accurate torsion limiting wrench

Abstract

The invention discloses a straight barrel accurate torsion limiting wrench. The straight barrel accurate torsion limiting wrench comprises a handle, a wrench rod and a torsion limiting mechanism, wherein a mounting groove is formed inside the handle; a mounting hole which communicates with the mounting groove is formed in the bottom of the handle; a first end of the wrench rod is limited in the mounting groove through the mounting hole; the torsion limiting mechanism is mounted in the mounting groove; the handle is in transmission connection with the wrench rod through the torsion limiting mechanism; and a second end of the wrench rod forms a wrench head and stretches out of the mounting hole. The straight barrel accurate torsion limiting wrench has the advantages that the accuracy is high, the torsion adjustment range is large, the structure is simple, the cost is low, the application range is wide, the utilization link does not need maintenance, and the later utilization cost is low.

Description

technical field [0001] The invention relates to a torque wrench, in particular to a straight cylinder precision torque limiting wrench. Background technique [0002] The existing torque wrenches in the market all use mechanical ratchet slipping devices to achieve torque limitation. When the use environment is harsh or after repeated use, the accuracy of the ratchet slipping devices decreases, and it cannot be guaranteed that the wrench will continue to work according to the designed torque range, regardless of the actual torque rise. Or decline, will cause adverse consequences to the actual application, and the time and value of the actual torque change cannot be predicted. At the same time, the existing ratchet torque wrenches in the market are complex in structure and high in production cost; when entering the actual use link, regular inspections must be ensured to eliminate wrenches with changed torque, and the cost of use is also high, which is not conducive to wide-scal...

AI Technical Summary

Problems solved by technology

[0002] The existing torque wrenches in the market all use mechanical ratchet slipping devices to achieve torque limitation. When the use environment is harsh or after repeated use, the accuracy of the ratchet slipping devices decreases, and it cannot be guaranteed that the wrench will continue to work according to the designed torque range, regardless of the actual torque rise. Or decline, will cause adverse consequences to the actual application, and the actual time and change value of the actual torque change cannot be predicted

At the same time, the existing ratchet torque wrenches in the market are complex in structure and high in production cost; when entering the actual use link, regular inspections must be ensured to eliminate the wrenches whose torque changes, and the cost of use is also high, which is not conducive to wide-scale promotion and use.

[0003] In addition, the existing torque wrenches usually only correspond to one application target, and the torque cannot be adjusted or the adjustment range is small, so the scope of application is single

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