The technical realization factors of the deep shaft cavity compression nut tightening force limiting tooling

Technical realization elements:

5. The purpose of this technology is to provide a force-limiting tool for tightening a deep shaft cavity compression nut, so as to solve the problem that it is difficult to ensure that the locking nut and the spring ferrule cooperate accurately.

6. The technical solution of this technology is: a deep shaft cavity compression nut tightening force limiting tool, including a compression shaft, a hollow structure, and a first calibration tooth set at the outer end on which is used for clamping with the spring. The sleeve is coaxially installed and the spring of the spring ferrule is compressed to the minimum, and the first calibration tooth can be aligned with the locking plate; the wrench shaft is a hollow structure, on which there is a corresponding set of the first calibration tooth. The second calibration tooth of the part can be inserted into the pressing shaft coaxially, and is used to align the second calibration tooth at one end to install the lock nut; the fixed shaft can be coaxially inserted into the wrench shaft for fixing and locking nut or separate from the lock nut.

7. Preferably, the pressing shaft is provided with a measuring hole arranged in the axial direction, a measuring rod is inserted in the measuring hole, and a measuring rod is inserted in the measuring hole, and the measuring rod is arranged on the No. A calibration tooth is located at the position and can overlap with the locking piece to retract the locking piece.

8. Preferably, a clamping seat is provided at the position of the pressing shaft corresponding to the measuring rod.

9. Preferably, one end of the wrench shaft is evenly spaced along the axial direction with wrench teeth, the wrench teeth can be inserted into the locking groove of the screw locking nut, and the width of the wrench teeth is the same as the width of the locking groove. same width.

10. Preferably, a wrench adapter is detachably connected to one end of the wrench shaft away from the wrench teeth, and the wrench adapter can be matched with a standard force-limiting wrench.

11. Preferably, a lifting ring is detachably connected to one end of the wrench shaft away from the wrench teeth.

12. Preferably, one end of the fixed shaft is provided with a first external thread that can be threadedly matched with the locking nut.

13. Preferably, the end of the pressing shaft is provided with a limiting structure, and the limiting structure includes a truncated cone, multiple groups of pressing blocks that are evenly spaced along the circumferential direction of the truncated cone, and the pressing blocks are 1 type and can be offset with the spring ferrule.

14. Preferably, a compression nut is provided at one end of the compression shaft away from the limiting structure, the compression nut is provided with a second external thread that can be threaded with the long shaft, and the outer side of the compression nut is provided with a second outer thread. There is a pressing block for limiting the position of the pressing nut, and a handle is provided on the outer wall of the pressing nut.

15. As a specific embodiment, a method for installing a deep shaft cavity compression nut tightening force-limiting tooling includes: installing the locking groove of the locking nut facing the wrench teeth of the wrench shaft, and inserting the fixed shaft into the wrench. The first external thread on the fixed shaft is screwed into the lock nut; the measuring rod is fixed on the pressing shaft through the clamping seat, and passes through the measuring hole of the pressing shaft, and the pressing shaft is installed In the long shaft, ensure the alignment of the pressing shaft and the locking piece of the spring ferrule, and ensure the alignment of the first calibration tooth and the locking piece; screw the pressing nut into the thread of the long shaft, and the pressing nut applies the pressure to the pressing shaft. The pressure is transmitted to the spring ferrule until it is pressed in place; insert the wrench shaft that fixes the lock nut into the compression shaft, rotate the wrench shaft to screw the lock nut into the central shaft, hold the wrench shaft without moving, rotate it in the opposite direction to fix it shaft to separate the fixed shaft from the lock nut; install the wrench adapter, cooperate with the standard force-limiting wrench to continue to rotate the wrench shaft, and within the specified tightening torque range, align the second calibration tooth on the wrench shaft with the first on the pressing shaft. A calibration tooth is aligned; loosen the compression nut, take out the compression shaft, the spring ferrule pops up and snaps into the locking groove of the lock nut, and drives the measuring rod to bounce at the same time. Check whether the sleeve and the lock nut are installed in place; make sure that the lock nut and the spring ferrule are installed in place, remove the wrench adapter, take out the wrench shaft, and the installation of the lock nut is completed.

16. A deep shaft cavity compression nut tightening force-limiting tooling of this technology, a compression shaft is set to compress or loosen the spring ferrule, a wrench shaft is set to install and lock the nut, and a fixed shaft is set to fix the lock For tightening the nut, the installation accuracy is ensured by the facing arrangement of the first calibration tooth, the second calibration tooth, the locking nut and the spring ferrule. The first calibration tooth and the second calibration tooth are located on the outside of the tooling to facilitate alignment. , to realize the convenient and accurate installation of the locking nut and the spring ferrule, the assembly time is short, and the labor intensity of the staff is greatly reduced.

17. Preferably, a measuring hole is provided on the pressing shaft, a measuring rod is inserted in the measuring hole, and the measuring rod is lapped and fitted with the locking piece to ensure that the measuring rod can accurately measure the locking piece when the locking piece bounces. Is it installed properly.

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