4results about How to "Guaranteed vertical accuracy" patented technology

The utility model provides a circular arc door guiding limit moving structure which comprises a door pocket, top rails and a second door body, the top of the door pocket is provided with a set of top rails used for limit moving of the first door body and the second door body, and the bottom of the door pocket is provided with a set of ground rails used for limit moving of the first door body and the second door body. The top rail fixing structure comprises a door pocket, the left side and the right side of the door pocket are respectively provided with a set of fixing frames used for being connected with a top rail in a limiting mode, and the cross section of the front side view of each fixing frame is of a rectangular structure. The supporting back frame and the adjusting rail are embedded through an I-shaped structure to ensure vertical precision, when the adjusting sliding seat moves up and down along the adjusting rail, the relative position of the supporting back frame and the arc rail is fixed through bolt holes, when the door body runs, the guide wheels roll along the curved surface of the arc rail, the limiting blocks are matched with the limiting layers to prevent derailing, and the ground rail and the top rail synchronously guide the door body to move horizontally.

The invention belongs to the technical field of servo valve armature assembly assembling, and particularly relates to a self-adaptive centering press-fitting device for hole-shaft matching, which has the advantages that firstly, a supporting structure with a limiting function instead of a fixed constraint function is combined with a chamfer guide design, so that a part can be subjected to self-adaptive fine adjustment in a position and posture in a press-in process; the coaxiality and perpendicularity precision of press fitting are effectively guaranteed, and the product quality is improved fundamentally; secondly, except for a necessary supporting surface and a pressure head contact surface, other precise surfaces of the workpiece do not rigidly collide with the tool, so that the surface damage or deformation of the part caused by press fitting is greatly avoided; and thirdly, due to the modular design and the rapid positioning function of the end cover, rapid replacement and continuous press fitting of workpieces can be achieved after the tool is debugged for the first time, the repeated alignment link is thoroughly omitted, the assembly efficiency is remarkably improved, and the tool is particularly suitable for mass production scenes.

The utility model relates to the related technical field of leveling rod supports, and one embodiment of the utility model provides a leveling rod support which comprises a main frame and a leveling rod body, the leveling rod body is arranged in the main frame, a supporting and stabilizing assembly is arranged at the bottom of the main frame and the bottom of the leveling rod body, and a sleeving assembly is arranged on the main frame. The supporting and stabilizing assembly comprises a plurality of supporting legs which are arranged at the bottom of the main frame, moving wheels are arranged at the lower ends of the supporting legs, a pair of connecting rods are vertically and movably connected into the main frame in a sleeved mode, a bracket is arranged at the lower ends of the connecting rods, and the lower end of the leveling rod body is inserted into the bracket. By means of the technical scheme, the problems that in the prior art, the contact area between a supporting leg and the ground is small, and a self-adaptive adjusting function is lacked are solved. In the prior art, the support is easy to sink into the ground or incline under the soft ground or the uneven measurement environment, and even if the initial calibration and measurement process is slightly disturbed by external force, the measurement data are not accurate due to shaking.

The application provides a kind of automatic installation device of launch vehicle relief valve, through elastic device, locking half clamping device, effectively realize the automatic suspension of relief valve and tee pipe combination and assembly docking, the vertical direction of fixed screw nut pair mechanism after fixed replaces the person who needs to drag relief valve combination outside cabin body.Compared with the prior art, the installation device of relief valve first guarantees the installation position of relief valve, the uniformity of flange surface docking and the accuracy of relief valve venting port centring and perpendicularity, then tightens and fixes the docking bolt nut of relief valve flange surface, the screw nut pair mechanism in three directions greatly improves the installation accuracy and avoids the matching error of operator.The second breakthrough of the application is that the motor is connected with the motion platform through the screw nut pair to complete the driving of the motion platform, so as to ensure that the gap of flange surface is uniform, the accuracy error of relief valve venting port centring and perpendicularity is within 1mm.