8results about How to "Prevent radial deformation" patented technology

This invention relates to the field of hydraulic straightening machine technology, and discloses a slide rail type hydraulic straightening machine, including a machine base. The machine base contains a shaft clamping component for clamping a shaft to be processed, and a straightening component for straightening the shaft to be processed. The shaft clamping component consists of a rotating clamping assembly that clamps one end of the shaft to be processed. A hydraulic push rod extends and pushes a push head, which in turn moves the push rod. The movement of the push rod causes the rearmost arc-shaped seat to move, thereby causing the pressure head mounted on the arc-shaped seat to press against the deformed area of ​​the shaft to be processed. As the arc-shaped seat moves, it causes the outer and inner extension plates to move synchronously, thereby pulling the remaining five arc-shaped seats to move. This causes the remaining pressure heads to move together and press against the shaft to be processed, providing radial support and limiting for the shaft to be processed, preventing excessive pressure on the shaft.

The utility model provides a screw pump rotor storage hanging bracket, which relates to the technical field of storage tools, and comprises a hanging bracket arranged in a suspended manner, a plurality of hooks are uniformly distributed and fixed on the hanging bracket, and hanging components used for being detachably connected with the end part of a screw pump rotor are hung on the hooks. The device has the advantages that radial deformation of the rotor can be prevented, and the possibility that the conveying efficiency and the service life of the assembled screw pump are affected due to the fact that the rotor is deformed due to long-term storage and the assembly precision of the rotor is affected is reduced.

The utility model discloses a kind of lotus head devices of resistance to pull, it includes bottle embryo fixer, connecting seat, flange quick-change shaft sleeve, rotating sleeve assembly and sprocket shaft system. By optimizing the structural design of flange quick-change shaft sleeve and sprocket shaft system, adopt roller to reduce friction, reduce abrasion by elastic baffle ring and limit baffle pin, avoid interference by arc concave, realize quick assembly by buckle groove. The utility model can significantly improve the resistance to pull performance of device, prolong service life, improve operation stability and simplify maintenance operation, applicable to high frequency rotation and telescopic small equipment, meet actual production demand.

The application discloses a combustion chamber structure for limiting the shrinkage and deformation of a head surface of a propellant, which comprises a propellant column, a shell with an insulating layer, and a lining layer, and further comprises an insulating ring, which is arranged at the head of the combustion chamber and is bonded to the shell with the insulating layer by means of an adhesive, and the propellant column is bonded to the shell with the insulating layer and the insulating ring through the lining layer. By arranging the insulating ring with a limiting function at the head surface of the combustion chamber, the radial shrinkage and deformation of the head surface are effectively prevented, so that the assembly interference problem between the inner surface of the propellant column and an ignition device due to the solidification deformation of the inner surface of the propellant column is avoided, the danger caused by the artificial shaping of the head surface is avoided, meanwhile, the gap formed between the insulating ring and the ignition device can effectively prevent the ignition device from being ablated and falling off, and then the thrust and pressure oscillation phenomenon caused by the ablation and falling off of the ignition device is avoided, which is favorable for improving the working efficiency of the solid rocket engine, and the process is simple, the universality is high, the production and maintenance costs are reduced, and the cost reduction and benefit increase are realized.

The present invention provides a guide wire retraction device, which belongs to the field of medical device technology, and includes: a mounting seat; a guide wire clamp; one end of a limit rope is connected to the mounting seat, and the other end is connected to the guide wire clamp; the guide wire clamp has a first position and a second position relative to the mounting seat, the guide wire clamp is in the first position, the limit rope is in a relaxed state, and the guide wire clamp is in the second position, the limit rope is in a tightened state; in the process of the guide wire clamp moving from the first position to the second position, the guide wire clamp pulls the guide wire to move a distance d1, the distance between the distal end of the balloon and the perfusion hole is d2, the distance between the distal end of the balloon and the rapid exchange port is d3, and d2<d1<d3. The tightenable length of the limit rope of the present invention can ensure that the distal end of the guide wire is withdrawn to between the perfusion hole and the rapid exchange port, is not affected by the insertion position of the guide catheter, and does not need to judge whether the guide wire is withdrawn to the right position by observing the developing mark; as long as the limit rope is tightened, the guide wire will inevitably withdraw to the appropriate position, and the operation is simple, the judgment is convenient and accurate.

The invention is suitable for the technical field of chamfering machines, and provides a spinning rubber roller double-station inner chamfering machine which comprises a chamfering table and a discharging part. A clamping part is fixed between the chamfering table and the discharging part. Sliding pieces are slidably arranged on the two opposite side faces of the two supporting boxes in a penetrating mode. A rotating piece is rotationally arranged on the sliding piece; an inner core supporting piece matched with the inner wall of the spinning rubber roller is attracted to the rotating piece through electromagnetism. A lifting piece matched with the sliding piece is arranged on the inner wall of the supporting box in a sliding mode. According to the device, an inner core supporting piece is arranged for supporting from the interior of the spinning rubber roller, meanwhile, the arc-shaped clamping plate is adopted for clamping and fixing from the exterior, the supporting function and the clamping function are separated, the inner core supporting piece is fed into the spinning rubber roller before clamping, the inner core supporting piece is clamped, and the inner core supporting piece is clamped by the arc-shaped clamping plate; the subsequent external clamping force is effectively dispersed, radial deformation of the interior of the spinning rubber roller caused by clamping is prevented, and the structural integrity of the spinning rubber roller is protected.

This invention provides a spring compression testing device, belonging to the technical field of spring testing equipment. The device includes a compression fixture body, a guide and limiting assembly, and at least one radial limiting member. The compression fixture body is mounted on the lower clamp of the testing equipment and has an axial compression space inside. The top of the compression space has a limiting structure for compressing the spring. One end of the limiting assembly is fixedly connected to the upper clamp of the testing equipment, and the other end extends through the limiting structure into the compression space to limit the deformation of the spring under test radially. The radial limiting member is detachably mounted on the compression fixture body and extends into or through the compression space. The portion extending into the compression space is arranged on one side of the guide and limiting assembly to limit the swaying of the spring under test placed on the guide and limiting assembly radially. This invention primarily addresses the technical problems in the prior art where clamping is difficult, stability is poor, and spring bending is easily caused during compression testing of small-diameter, long springs.

The utility model discloses transmission shaft multistation composite processing device relates to the field of machining, including lathe body, and the lathe body has initiative power shaft, first translation mechanism and second translation mechanism, and the fixture is fixedly connected on initiative power shaft, and the transmission shaft is fixedly connected on the fixture, and the moving track of first translation mechanism and second translation mechanism all sets up along transmission shaft length direction. Advantageous effect lies in: through the cooperation of first translation mechanism, rotating mechanism, makes the outer circle turning assembly and the keyway milling assembly can share same reference transmission shaft axis, need not transfer and can complete outer circle turning and keyway milling, and second translation mechanism and swing subassembly drive drilling assembly complete end drilling simultaneously, realize one -time clamping, three -way procedure's integrated processing. Compared with traditional multiple equipment step -by -step processing, single piece processing cycle shortens, and the reference deviation of multiple clamping is avoided, and the machining accuracy consistency improves significantly.