5results about How to "Reduce preload" patented technology

The utility model discloses a kind of dielectric fiber driven grippers, including mounting base and the assembly on the mounting base of several clamping jaw mechanisms, all the clamping jaw mechanisms are distributed along circumference, to realize the automatic centring of object and catch;Each the clamping jaw mechanism includes hingedly connected first clamping jaw and second clamping jaw, and the first dielectric fiber driver for controlling the centripetal or centrifugal motion of the first clamping jaw is connected between the first clamping jaw and the second clamping jaw;The second clamping jaw is assembled on the mounting base.The utility model successfully provides a kind of gripper solution with low driving voltage, simple structure, light weight, high reliability and good grasping adaptability by combining low-voltage dielectric fiber driver with optimized design rigid clamping jaw mechanism, and it has excellent comprehensive performance and good application value.

The utility model discloses an engine connecting rod convenient to disassemble and assemble, which belongs to the technical field of engine connecting rods and comprises a rod body and a connecting rod big end, the connecting rod big end is fixedly mounted at one end of the rod body, connecting rod covers are symmetrically mounted on two sides of the connecting rod big end, fixing cylinders are slidably mounted in the connecting rod covers, and fixing rods are fixedly mounted in the fixing cylinders. One end of the fixing rod is connected with a handle, telescopic sleeves are symmetrically arranged at the other end of the fixing rod, springs are arranged in the telescopic sleeves, and the other ends of the springs are connected with guide columns. According to the engine connecting rod convenient to disassemble and assemble, the disassembling time can be shortened, by rotating the handle, the fixing rod in the fixing barrel can stretch the spring and the telescopic sleeve to stretch out and draw back together, a positioning pin on the connecting rod cover is pulled out, rapid disassembling is achieved, and during assembling, the handle is rotated, the spring is stretched and aligned with a groove to be inserted, the spring pushes the telescopic sleeve to stretch out, and assembling is completed. The positioning pin is inserted, locking is achieved, and the rod body can be prevented from loosening under high-frequency vibration through locking combination of the spring and the positioning pin.

The utility model discloses an auxiliary cooperation structure of automobile magnetic switch relates to auxiliary cooperation structure of automobile magnetic switch technical field, including starter, magnetic switch, installation ring and installation round shell, the bottom of starter is fixedly connected with the top of installation round shell, the surface of installation round shell is movably connected with the inner chamber of installation ring, the bottom of installation ring is fixedly connected with the surface of starter. The utility model discloses through setting installation device, has solved the auxiliary structure of automobile magnetic switch is the cooperation structure of assisting magnetic switch normal operation, and magnetic switch mounting structure belongs to one kind of auxiliary structure, usually, the bottom of magnetic switch is provided with mounting bracket, and when installing, mounting bracket is positioned in the starter of car through bolt, but the bolt is susceptible to starter vibration and produces loosening, and long -term high -frequency vibration also can reduce the pretightening force between the thread, after long -term use, the bolt will not be able to install the magnetic switch stably.

The invention belongs to the technical field of petroleum and natural gas resource development, and particularly relates to an expansion metal open hole anchoring packer. The device comprises a central pipe, an open hole anchoring sealing assembly and a valve hoop. The open hole anchoring sealing assembly comprises an expansion metal anchoring sealing shell. A sealing cavity is formed between the expansion metal anchoring sealing shell and the central pipe; the upper end and the lower end of the expansion metal anchoring sealing shell are each sleeved with a set of expandable barrel type slips, and the center pipe is sleeved with the expandable barrel type slips. Through type slits are evenly distributed in the expandable barrel type slip. The valve hoop sleeves the central pipe and is in threaded connection with the central pipe; the valve hoop is provided with a channel which is communicated with the central pipe and is communicated with a sealing cavity between the central pipes of the expansion metal anchoring sealing shell; the expansion metal open hole anchoring packer is made of metal. The soft metal framework is expanded through hydraulic driving, meanwhile, other anchoring and sealing assemblies installed on the soft metal framework are linked to be expanded together to be attached to the stratum, and the anchoring and sealing functions are achieved.

The utility model discloses a mold thermocouple fastening device, which relates to the technical field of thermocouple assembly and comprises a shell, a clamping mechanism, an elastic pressing assembly and a locking structure. A mounting channel is arranged in the shell and is used for guiding directional mounting of the thermocouple probe; the clamping mechanism is located at the front end of the shell and comprises at least two clamping jaws capable of elastically deforming, and rapid positioning and preliminary fixing are achieved through meshing of limiting steps evenly distributed in the circumferential direction and a preformed hole of a mold. The elastic pressing assembly is arranged in the shell in a sliding mode, the tail end of the elastic pressing assembly is provided with an arc-shaped groove matched with the probe in shape, the rear end of the elastic pressing assembly provides continuous pressing force through a spiral spring, and gap changes caused by vibration or thermal deformation can be dynamically compensated. The locking structure penetrates through the side wall of the shell, rotation of the bolt is converted into axial locking force through matching of the conical head and the inclined face of the limiting groove of the pressing block, the vibration resistance and the contact stability are remarkably improved through the multi-stage synergistic effect, and temperature measurement signal drifting or probe falling is avoided.