10results about How to "Reduce rust rate" patented technology

This utility model discloses an automobile wheel hub, including a rim body and a spoke body. The spoke body has a mounting groove at its center, and a through hole at its center. Several bolt holes are arranged around the outside of the through hole. A mounting sleeve is threaded into the through hole, and a protective cover is connected to the mounting sleeve. The protective cover is installed on the top of the mounting groove. Several locking grooves are arranged in a ring shape on the through hole, and a spring is installed in each locking groove. A magnetic plug is connected to the end of each spring. An annular groove is formed on the outside of the mounting sleeve, and the magnetic plug connects the annular groove and the locking groove. A driving groove is provided inside the mounting sleeve, and a cover is installed on the outside of the driving groove. This utility model protects the wheel hub bolts with the protective cover, effectively reducing the risk of wheel hub and tire theft. The magnetic plug locks the mounting sleeve to the spoke body, preventing the protective cover from being disassembled with ordinary tools.

The utility model is suitable for the technical field of mooring shackles, and provides a mooring shackle which comprises a shackle assembly, a pin shaft assembly is arranged on the shackle assembly in a penetrating mode, a screw is arranged between the shackle assembly and the pin shaft assembly, and the shackle assembly comprises a shackle body. A first connecting hole and a second connecting hole are symmetrically formed in the shackle body, the shackle body is in a U shape, the pin shaft assembly comprises a pin shaft body, a limiting block is arranged at one end of the pin shaft body, a fixing block is arranged at the other end of the pin shaft body, and the limiting block is completely placed in a limiting groove, so that the fixing block is fixed to the shackle body. The limiting block is flush with the end face of the limiting groove, the fixing block is flush with the end face of the first connecting hole, the flush structure reduces steps between the pin shaft assembly and the shackle assembly, the smooth surface can reduce the probability of partial electrochemical corrosion of threads, the corrosion speed of the pin shaft assembly and the shackle assembly is slowed down, and the service life is prolonged.

This utility model provides a lightweight excavator underframe, belonging to the technical field of excavator underframes. It includes a frame body and a top fixing head. The top fixing head is fixedly connected to the top of the frame body, a first connecting head is fixedly connected to the front of the frame body, and a second connecting head is fixedly connected to the back of the frame body. This utility model adds a wear-resistant layer, active electrodes, and connecting wires to the frame body. The wear-resistant layer is made of hard plastic. When the bottom of the frame body comes into contact with the ground, wear occurs preferentially, slowing down the paint peeling rate. The active electrodes preferentially undergo an oxidation reaction, generating electrons, which are then transported to the interior of the connecting wires. The connecting wires then transport electrons to the interior of the frame body, thereby replenishing the entire frame body with electrons, slowing down the corrosion rate and extending the service life of the excavator underframe.

The utility model discloses a bridge pile foundation anti-scour structure which comprises an anti-scour protection wall and an isolation layer, the anti-scour protection wall is annular, the anti-scour protection wall is arranged outside a pile foundation body in a sleeved mode, the bottom of the anti-scour protection wall abuts against a riverbed, and the top of the anti-scour protection wall is located above a flowing water face. The anti-scouring protection wall comprises concrete and protection wall steel bars, and the protection wall steel bars are arranged in the concrete. A gap is formed between the anti-scouring protection wall and the pile foundation body, and the isolation layer is arranged in the gap. The technical effects are achieved as follows: the scouring of water flow to the pile foundation body is reduced by utilizing the anti-scouring protection wall, the thickness of a pile foundation steel bar protection layer is indirectly increased, the corrosion speed of pile foundation steel bars is slowed down, and the bearing capacity of the pile foundation body is guaranteed; the anti-scour protection wall is not influenced by the elevation of the river channel scoured by water flow, and the anti-scour protection wall is influenced by self gravity and descends to a riverbed while the scoured elevation of the river channel is reduced; materials required by the anti-scour retaining wall are common materials in construction, so that an existing pile foundation can be conveniently constructed and transformed, and the repair construction cost can be reduced.

The invention discloses an efficient anaerobic sewage treatment device, and particularly relates to the technical field of sewage treatment.The efficient anaerobic sewage treatment device comprises a tank body, a tank cover is arranged at the top of the tank body, and a left partition plate and a right partition plate are arranged in the tank body; the inner space of the tank body is sequentially divided into a precipitation separation tank, an anaerobic tank and a biological filter tank from left to right by the left partition plate and the right partition plate, most of sludge and impurities with larger mass in sewage can be deposited at the bottom of the precipitation separation tank under the influence of gravity, and MBBR filler in the anaerobic tank is beneficial to quickly forming a biological membrane; the sewage is ensured to be in full contact with the filter material filler in the biological filter through the water guide pipe and the water distribution pipe, so that the effects of filtering and degrading the pollutants are realized, and as the liquid level difference exists between the water inlet pipe and the water outlet pipe, the whole device can realize unpowered treatment of the sewage without additionally arranging an additional power assembly; the purpose of saving energy is achieved, and meanwhile operation cost is reduced.

The utility model discloses a French window guardrail which comprises a barrier, four symmetrical connecting pipes are fixedly connected to the bottom of the barrier, a first mounting hole is formed in the left side of each connecting pipe, a mounting bottom pipe is arranged below each connecting pipe, a fixing bottom plate is fixedly connected to the bottom of each mounting bottom pipe, and a second mounting hole is formed in the left side of each fixing bottom plate. And the surface of the mounting bottom pipe is fixedly connected with a limiting ring. The fixing sleeve is arranged on the surface of the connecting pipe in a sleeved mode, so that the fixing bottom plate reaches the position beside the French window, then the fixing bottom plate is fixed through the expansion bolt, the fixing bolt penetrates through the first mounting hole and the second mounting hole and is in threaded connection with the nut, and the connecting pipe is limited in an inner cavity of the fixing sleeve. Therefore, the purposes that the French window guardrail can be fixed through the inserting structure, the situation that the French window guardrail needs to be broken and cut when the French window guardrail is disassembled and replaced by a user is avoided, and the disassembly, assembly and replacement convenience of the French window guardrail is improved are achieved.

The utility model relates to a modularized rustproof flexible packaging device used in a high-humidity environment, which comprises a flexible packaging main body, a rustproof module and a drying monitoring module, and the flexible packaging main body wraps the rustproof module and the drying monitoring module. The rust resisting module and the drying monitoring module form two cavities through a magnetic attraction separation strip embedded between the rust resisting module and the drying monitoring module, at least one hole is formed in the surface of each cavity, and the rust resisting module and the drying monitoring module are connected and detached through the magnetic attraction separation strip. The drying agent and the corrosion inhibitor in the packaging device can be replaced conveniently, and the metal corrosion speed in the high-humidity environment is reduced.

This utility model provides a live-line working device for oil and gas wells, belonging to the field of live-line working technology. It includes a fixed plate and a delivery pipe. The delivery pipe is connected through the top of the fixed plate, and a shielding shell is connected through the bottom of the delivery pipe. A fixing ring is fixedly connected to the outer surface of the shielding shell. Output pipes are connected through both sides of the shielding shell, and an electric throttle valve is connected through the top of the output pipe. This utility model uses a transmission arm with a wrapping shell, a telescopic shell, and a limiting hole. Under external force, the telescopic shell moves inside the wrapping shell, driving the transmission plug to move up and down. Then, an external bolt is inserted into the limiting hole to fix the telescopic shell after length adjustment, thereby increasing the transmission range of the live-line working device and improving the extraction effect of the oil and gas well.

The utility model relates to the technical field of safety rope supporting facilities, and one embodiment of the utility model provides a safety rope hanging device based on an H-shaped steel beam, the safety rope hanging device comprises a beam body, a positioning clamp is arranged on the beam body, a driving clamping assembly is arranged on the positioning clamp, and an anti-rust protection assembly is arranged on the upper end face of the positioning clamp; the driving clamping assembly comprises a clamping groove, a driving bolt is screwed on the upper end face of the positioning clamp and inserted into the positioning clamp, a clamping disc is arranged on the lower end face of the driving bolt, and the position of the clamping disc corresponds to the position of the stress disc. By means of the technical scheme, the problems that in the prior art, when part of traditional devices are installed, tedious measuring and positioning work needs to be carried out, a large amount of time and manpower are consumed, the installation process is extremely inconvenient, and when supporting columns are installed, some devices for fixing safety ropes through supporting columns need to accurately measure the positions of the supporting columns on H-shaped steel beams, and the installation cost is low are solved. The technical problem of proper hanging height and angle of the safety rope is solved.

This application relates to the field of smart lock technology and discloses an easy-to-operate smart lock, mainly composed of a lock body, a lock beam assembly, a lock cover assembly, and a connecting assembly. The lock beam assembly is movably mounted on the top of the lock body, and the smart lock is opened and closed by moving the lock beam assembly up and down. The lock cover assembly and the connecting assembly are movably mounted on one side of the bottom of the lock body, and the lock cylinder is protected by rotating the lock cover assembly and the connecting assembly. This invention, by movably mounting the connecting assembly at the bottom of the lock body and fixing the connecting assembly to the lock cover assembly, allows the operator to rotate the connecting assembly to move the lock cover assembly, thereby opening and closing the lock cylinder. When the smart lock is in the locked state, the lock cover assembly effectively seals the lock cylinder, preventing impurities from entering the lock cylinder from the bottom of the smart lock, thus protecting the lock cylinder, slowing down the rusting rate of the lock cylinder, and extending the service life of the smart lock.