6results about How to "Elastic stability" patented technology

This utility model belongs to the field of mold fixing technology, and in particular to a rapid fixing structure for a concrete permeability testing instrument mold. It includes a mold body and an annular plate fixedly welded to the upper and lower peripheries of the mold body. A connecting frame is sleeved around the lower annular plate, and a rapid fixing structure connects the annular plate and the connecting frame. The rapid fixing structure includes a groove on the upper surface of the connecting frame and fixing plates fixedly installed on the surfaces of both ends of the annular plate. Through the design of this rapid fixing structure, the operator only needs to move the sliding plate to insert or remove the limiting rod from the limiting hole to quickly fix or disassemble the mold body and the connecting frame. The entire process requires no complex tools or cumbersome operating steps, greatly shortening the mold assembly and disassembly time, significantly improving the efficiency of the testing work, and enabling testing personnel to complete the testing of multiple samples more quickly, meeting the needs of large-scale testing tasks.

This invention relates to the field of polymer materials technology, and discloses a high-elasticity rubber-plastic insulated cable composite material and its preparation method. The high-elasticity rubber-plastic insulation material comprises, by weight, 40-50 parts of EPDM rubber, 20-25 parts of polyolefin elastomer, 30-35 parts of modified calcined kaolin, 3-5 parts of composite antioxidant, 2-3 parts of silane coupling agent, and 1.5-2 parts of vulcanizing agent. During preparation, EPDM rubber and polyolefin elastomer are kneaded for 5-8 minutes, then modified calcined kaolin and silane coupling agent are added and kneaded for another 8-12 minutes, followed by the addition of composite antioxidant and vulcanizing agent and kneading for 3-5 minutes. Finally, the mixture is vulcanized in stages. The first stage vulcanization temperature is 155-160℃, and the second stage vulcanization temperature is 165-170℃. The insulating material prepared by this invention has excellent elasticity, outstanding resistance to flexural fatigue, stable insulation performance, high volume resistivity, excellent aging resistance, and tight interfacial bonding. It is suitable for use in high-voltage cable insulation layers, effectively extending the service life and stability of the cable.

This invention discloses a ground shielding layer construction process for a multi-condition simulation test platform for power transmission and transformation equipment, belonging to the field of power transmission and transformation. The construction process is based on a ground shielding layer construction device, including a foundation and a steel mesh. A trench is excavated in the foundation, and the steel mesh is installed within the trench. A ground frame assembly is also included, located within the trench. The ground frame assembly includes a transition frame, a positioning structure, and a bottom frame. The bottom frame is located on the bottom wall of the trench, and the steel mesh is laid on the bottom frame. The transition frame is located on the inner side wall of the trench. The positioning structure is located at the connection between the transition frame and the bottom frame. The four sides of the steel mesh are embedded in the grooves on the four sides of the bottom frame, and the positioning structure is used to position the steel mesh. This invention has the advantage of using the positioning structure to embed the four sides of the ground shielding layer composed of multiple steel meshes into the grooves on the four sides of the bottom frame for rapid installation, avoiding multiple welding positioning points.

The application discloses a circuit board for an automatic medical injector and a production process thereof, and particularly relates to the technical field of circuit board manufacturing. The circuit board for the automatic medical injector adopts an elastic bending-resistant substrate as a substrate, selects elastic metal as a raw material, adds polyether in synthetic fibers, has good mechanical physical properties and good temperature resistance, and adds plasticizers and organic silicon as an auxiliary. The circuit board has high and low temperature resistance, electrical insulation, oxidation resistance stability, and a reinforcing layer as metal rubber. The structure is stable, and the elastic bending-resistant substrate has good elasticity, toughness and bending resistance. The use of transparent film coating and protective film double-protects the upper surface of the circuit board body, has good protection effect, avoids the phenomenon that the surface of the elastic bending-resistant substrate is damaged due to damage of the transparent film coating, improves the structure of the circuit board body, and improves the safety function of the circuit board body.

This utility model discloses a miniature semi-automatic chip testing platform, including a support base plate on which a PCB board and a chip testing socket are mounted. The chip testing socket has a chip slot for testing the chip to be tested. A support frame is provided on the support base plate, and the support frame includes a transition horizontal plate parallel to the support base plate. A chip pressure pin is mounted on the transition horizontal plate. The chip pressure pin is driven to move up and down by a first lead screw motor or a pressure plate linkage mechanism, and the bottom of the chip pressure pin corresponds to the chip slot. This utility model can ensure a stable chip testing environment, improve testing speed, enhance the adaptability of the testing socket, and save testing time.

The utility model relates to the technical field of cable manufacturing equipment, in particular to an automatic guide assembly of a cabling machine, which comprises a base, a connecting frame and the like, a driving assembly for cabling is mounted at the rear end of the base, a fixing frame is connected to the front end of the base, and electric sliding rails which are vertically symmetrical are mounted on the left side of the fixing frame; one end of the connecting frame is slidably connected into the electric sliding rail, the electric sliding rail drives the connecting frame to move up and down, the other end of the connecting frame is connected with an installation outer frame, the upper end and the lower end in the installation outer frame are slidably connected with contact plates, and pressure sensors are installed on the contact plates extruding a cable and are in extrusion fit with the inner side of the installation outer frame. The fixing frame and the installation outer frame are jointly connected with an elastic assembly, and the contact plate is provided with a protection assembly used for making contact with a cable. The air spring is adopted to replace a traditional torsion spring to provide elastic support, the air pump is matched with the three-way valve, air can be supplemented or pressure can be adjusted in real time, stable elastic performance is ensured, and therefore the service life of the whole device is prolonged.