8results about How to "Anti-loose effect" patented technology

The invention relates to the field of vacuum circuit breakers, and discloses a GIS three-station framework oil seal assembly mould which comprises a left side plate, the left side plate is arranged on the left side of a right side plate, a plurality of guide rods are connected between the right side plate and the left side plate through bolts, and a transmission device is detachably arranged between the left side plate and the right side plate. And the transmission device is composed of a transmission mounting plate, a first threaded hole, a lead screw and a connecting sleeve, the interior of the first threaded hole is in threaded connection with the threaded end of the lead screw, positioning holes are formed in one side of the left movable plate and one side of the right movable plate correspondingly, and second positioning pins are slidably inserted into the two positioning holes correspondingly. According to the contact spring installation device, through the left side plate, the right side plate, the right movable plate, the left movable plate and the transmission device, a worker can effectively fix a contact spring and parts of the contact spring, meanwhile, the length and the position of the contact spring can be determined, and therefore the installation efficiency of the contact spring is improved.

This utility model discloses a turbine top cover for visual monitoring, relating to the technical field of turbine top cover structure. The turbine top cover for visual monitoring includes a sealing cover plate, an anti-impact locking assembly, a cover body mounted on the turbine casing, and a transparent cover. An observation hole is provided on the cover body, and the transparent cover is fixedly mounted within the observation hole. The sealing cover plate includes an outer edge and a pressure-resistant part. The outer edge is located on the outer side wall of the cover body. The pressure-resistant part is located within the observation hole and connected to the outer edge. The pressure-resistant part abuts against the transparent cover. A first bolt is provided between the outer edge and the cover body, fixing the outer edge and the cover body together. The anti-impact locking assembly includes a pressure plate with a first limiting groove, into which the nut of the first bolt can extend. This utility model can effectively improve the water pressure resistance of the transparent cover on the turbine top cover, effectively preventing water pressure damage and leakage.

The present invention discloses a suspended waterproof curtain wall structure, which relates to the technical field of curtain walls; in order to solve the problem of structural stability; it specifically includes a fixing part, a cantilever arm is arranged on one side of the fixing part, and a curtain wall structure is installed at the bottom of the cantilever arm; the cantilever arm includes a cantilever fixed to the side wall of the fixing part and a load-bearing arm, and a plurality of tightened auxiliary pull ropes are fixed on the opposite side of the cantilever and the load-bearing arm. The present invention optimizes the structure, uses the load-bearing arm to share the load of the cantilever, and converts the forces in the two load directions shared by the load-bearing arm, so that the resultant force received by the load-bearing arm is basically along the length direction of the load-bearing arm, thereby converting the bending moment of the cantilever into the internal stress of the load-bearing arm as a whole, preventing the deformation of the cantilever, and at the same time, the load limit of the load-bearing arm along the length direction is much greater than the bending and torsion limit, thereby increasing the load of the entire cantilever arm, preventing deformation, and increasing the stability of the structure.

The utility model provides a vacuum pump convenient to maintain, which relates to the technical field of vacuum pumps and comprises a vacuum pump body, a maintenance bin is fixedly mounted on the top surface of the vacuum pump body, a bin cover is mounted on the top surface of the maintenance bin, an observation window is fixedly mounted on the top surface of the bin cover, and radiating fins are fixedly mounted on the surface of the vacuum pump body. According to the utility model, a worker can conveniently observe a fault point through the arranged observation window, so that the bin cover is opened after the fault point is determined, invalid operation can be avoided, the working intensity of the worker is reduced, and meanwhile, the brush plate can rub the surface of the observation window, so that the surface of the observation window can be cleaned, and the working efficiency is improved. Meanwhile, heat on the cooling fins can be conducted through the arranged heat conduction block, then the heat can be conducted to the long rod, then the long rod can conduct part of the heat to the pull handle, and therefore when the pull handle is pulled in winter and part of cold areas, hands can be prevented from being frozen.

A tower crane intelligent nut monitoring system relates to the technical field of tower crane intelligent monitoring and comprises a high-strength bolt, a nut and a monitoring device, a threaded hole is coaxially formed in the top end of the high-strength bolt, and the thread screwing direction of the threaded hole is opposite to that of the high-strength bolt; the nuts are screwed on the high-strength bolts and used for locking the adjacent tower single sections, the center of the bottom end of the monitoring device is provided with a stud, the stud is in threaded connection with the threaded hole, and the monitoring device is connected with the tops of the nuts through a displacement sensor and a pressure sensor. And the wireless signal receiving and transmitting device is in signal connection with a control system of a tower crane safety management mechanism. The safety monitoring effect of the intelligent nut of the tower crane can be effectively improved.

The utility model discloses a main and auxiliary frame connecting assembly and a main and auxiliary frame connecting structure, and belongs to the technical field of dumper parts. The main and auxiliary frame connecting assembly comprises an upper tensioning frame and a lower tensioning frame, the upper tensioning frame is used for being connected with an auxiliary frame longitudinal beam, the lower tensioning frame is used for being connected with a main frame longitudinal beam, the upper tensioning frame and the lower tensioning frame are connected through a second bolt pair, and a base plate is arranged between the upper tensioning frame and the lower tensioning frame. A gap between the upper tensioning frame and the lower tensioning frame can be eliminated through the base plate, the anti-loosening effect is achieved, the precision requirement for installation and positioning of the upper tensioning frame and the lower tensioning frame is lowered, the second bolt pair is sleeved with the sleeve, the sleeve is located between the head of a bolt of the second bolt pair and the upper tensioning frame, the threaded section of the bolt is only used for being connected with the lower tensioning frame, and therefore the anti-loosening effect is achieved. And the bolt bar in the area where the sleeve is located only bears axial force, so that the stress efficiency and reliability of the bolt are improved, and the bolt is not easy to break when being lengthened.

The utility model relates to a non - equal thick double support plate wheel hub for axial flow fan, the utility model discloses the structure of upper support plate and lower support plate cooperate upper and lower clamp is used to fix fan blade, forms the mounting structure of closure, and the annular package of blade pulp root is carried out, improves the reliability of installation, and the upper support plate of relatively thick guarantees the strength of overall structure, and the lower support plate is used as the auxiliary support to blade, can effectively promote overall rigidity, through reducing the thickness of lower support plate and opening the hole in the center, can effectively reduce the weight of overall structure while guaranteeing the structural strength. The upper and lower clamp structure cooperation two sides set up the double -end fastening bolt and carry out the clamping fixation fan blade, guarantee structural connection stable, improve the operation safety of fan. And through the stop washer and be connected fixed between the double -end fastening bolt, and through setting the notch on the stop washer, through bending can make it be covered on the nut, play the effect of anti - loosening, guarantee the connection stability of double -end fastening bolt.

The utility model discloses a fall -resistant glue locking screw relates to the field of ski binding, fall -resistant glue locking screw, including screw rod, nut and fall -resistant glue, and fall -resistant glue and the thread of screw rod constitute the composite thread surface together, through being provided with two point gum point on screw rod, two point gum points 180 degrees symmetry distribution, the fall -resistant glue of heating melting is injected or pressed into the hole under high pressure, and when fall -resistant glue cooling contracts and is fixed in the hole, and fall -resistant glue forms the composite thread surface with screw rod, and the fall -resistant glue that fills will slightly protrude from the thread surface, owing to the nylon material quality has high ductility, toughness and recovery elasticity, when screw rod and nut are combined, the fall -resistant glue protruding from the thread surface is extruded deformation, utilize the huge material ductility of fall -resistant glue, fill the thread meshing gap, and produce the rebound tension of screw nut continuously, and this mechanism makes the fall -resistant glue bite tightly matched nut and play the locking effect, and it is not easy to loosen after locking.