A kind of length-adjustable rod assembly
Technical field
The present invention relates to a kind of length-adjustable rod assembly.
Background technique
The rod assembly length that general flight control system is used can not be reconciled, there is certain deviation in as installed because of connected piece, need be adjusted by the pull bar physical length position of connected piece during installation, for the deviation of other device mounting points of the control system that compensates aircraft.Therefore need a kind of assembly that can regulate traditional pull bar length and there is locking function to solve this installation question.
Summary of the invention
The invention provides a kind of length-adjustable rod assembly, realize that on the basis of existing pull bar the rod assembly entire length is adjustable and lock.
The invention provides following solution:
This length-adjustable rod assembly, comprise pull bar, its special way is: also comprise screwed joint, locking nut, packing ring and sleeve, sleeve one end and pull rod shaft are to being connected and fixed, the sleeve the other end is provided with internal thread, screwed joint and the described sleeve the other end screw, and the adjusting of screwing length realizes the adjusting of rod assembly entire length; Described locking nut and packing ring are installed on the end face of the sleeve the other end, with the lock bolt joint.
Based on above-mentioned basic technical scheme, the present invention also does following optimization and limits and improve:
Be provided with peep hole on sleeve wall.
Locking nut and packing ring adopt safety fuse cutout fully locked at locked position.
The medial recess of the end face of the described sleeve the other end, the one side of packing ring has central protuberance, and this of packing ring simultaneously is close to the end face of the sleeve the other end.
Between sleeve and pull bar, by rivet, fix.
The present invention has the following advantages:
Structure of the present invention is simple and clear, easy and simple to handle, can reliablely and stablely realize the adjusting of rod assembly entire length.
The accompanying drawing explanation
The structural representation that Fig. 1 is adjusting of the present invention and locking device.
The partial sectional view that Fig. 2 is Fig. 1 (A-A).
Wherein, 1-screwed joint: 2-locking nut; 3-safety fuse cutout; The 4-packing ring; The 5-sleeve; The 6-rivet; The 7-pull bar; The 8-peep hole.
Embodiment
This length-adjustable rod assembly, comprise screwed joint, packing ring, locking nut, sleeve and pull bar etc.Wherein, the adjustable end of pull bar and sleeve one end are connected and fixed with rivet, and sleeve the other end inside is threaded with the screwed joint threaded end and adopts and be threaded.Screwed joint and described sleeve interconnect and play regulatory role, can check by the peep hole on sleeve the screwing length of described screwed joint in scope of compromise, packing ring and locking nut play the described screwed joint of locking, and safety fuse cutout is mainly used in safety bolt joint and locking nut; The fixed end of pull bar generally is connected with the joint that bearing is housed, and joint is usually with rivet or be welded and fixed.The adjusting of rod assembly and locking, regulated according to being connected length, and by described locking nut locking, finally fully locked with safety fuse cutout.
In order to guarantee that screwed joint has enough screwing lengths, the screw thread distance that equals to be greater than 1.2 times in the exterior edge face of sleeve distance is established the peep hole with φ 1.5~φ 1.8, treats that screwed joint is adjusted to appropriate location, and is locked with locking nut.
As shown in Figure 1 and Figure 2, rod assembly is regulated with after one end 7 of pull bar in locking device and sleeve 5 one ends coordinate, with rivet, fix, sleeve 5 bands adopt and are threaded with screw thread one end and screwed joint 1, can carry out length adjustment, and control the minimum screwing length of screw thread by the peep hole on sleeve 5; To appropriate location, packing ring 4 and locking nut 2 are installed on successively to the screwed joint threaded end when length adjustment, the one side of packing ring 4 stand-by projections and the recessed one side of sleeve 5 are placed, then locking nut 2 is tightened, complete adjustable end assembling.After rod assembly has been assembled, can by above-mentioned length adjustment mode, can regulate again according to accessory fitting length of installation, finally use safety fuse cutout 3 that packing ring 4 and locking nut 2 is locked.Finally realize the adjusting of rod assembly and the effect of locking.