16results about How to "Easy to rust" patented technology

The utility model relates to the field of air pipe limiting devices, in particular to an adjustable limiting device for air pipe connection, which comprises a connecting flange. The limiting assembly comprises limiting sleeves located on the periphery of the surface of the connecting flange, the outer surface of each limiting sleeve is provided with two connecting blocks, one side of each connecting block is fixedly connected with a rack, the outer surface of each limiting sleeve is provided with a fixing block, and the fixing blocks and the connecting blocks are distributed in an axial symmetry mode. A moving groove is formed in the fixed block; a twisting rod is rotated to drive a gear to rotate, so that a rack and a limiting sleeve are driven to move, a limiting plate slides in the limiting sleeve while the limiting sleeve moves, so that the moving limiting sleeve is limited, the limiting sleeve is moved through cooperation of the gear and the rack, bolts are not needed, and operation is convenient. And the problem that the ventilation pipeline cannot be disassembled and repaired due to the fact that the bolt is rusted after being used for a long time and is difficult to loosen is solved.

The utility model discloses a cooling device for an end winding of a generator, which relates to the technical field of electrics and comprises a generator body, an inner cover support plate is fixedly mounted on the surface of the generator body, an end cover body is slidably mounted on the surface of the inner cover support plate, and a butt joint support groove is formed in the surface of the inner cover support plate. According to the cooling device for the end winding of the generator, the first guide plate pushes the second guide rod to slide from the inner side of the butt joint support plate to the inner wall of the positioning support groove, so that butt joint installation of the end cover body and the inner cover support plate is achieved; by means of the mode, the convenience of butt joint combination between the end cover body and the inner cover supporting plate is guaranteed, meanwhile, the convenience of disassembly maintenance and cleaning operation when the generator body works for a certain period of time is guaranteed, and the defects that a traditional generator body and an end cover body are located through bolts, rusting is easily caused, and separation operation is not convenient are overcome.

The utility model relates to a hydraulic winch for underground. Limiting piece includes gear for controlling swivel to rotate. Limiting piece includes pivot lever, and one end of pivot lever is installed with the runner for the cooperation wire rope control pivot lever rotates, and the other end of pivot lever is installed with be convenient for control bevel gear no.

The utility model relates to automatic winding equipment for linear guide rail packaging, which comprises a first piece, a second piece and a winding part, the winding part is positioned between the first piece and the second piece, the first piece is separated from the second piece, and two side surfaces of the winding part are respectively connected with the first piece and the second piece through connecting columns; the first piece and the second piece are located on the same horizontal plane. The mounting frame is connected with the first piece and the second piece through connecting columns, the driving assembly and the clamping assembly are connected with the mounting frame through mounting plates, and the clamping assembly corresponds to the releasing assembly in position; and a driven ring is arranged on the mounting frame. According to the automatic winding equipment for packaging the linear guide rail, the labor intensity is reduced, the winding working efficiency is improved, the consistency of the wound linear guide rail is improved, the phenomenon that the linear guide rail is prone to rusting due to the fact that the hand of an operator makes contact with the linear guide rail is avoided, and the production cost is saved.

The dry powder fire extinguishing device is simple in structure and long in service life and comprises a fire extinguisher body and a fixing seat, the fixing seat is provided with a containing groove, the fire extinguisher body is arranged in the containing groove, and a positioning device used for preventing the fixing seat from moving is arranged on the fixing seat.

The invention discloses a large cylindrical lithium battery negative collector plate and an ultrasonic point bottom welding method. The large cylindrical lithium battery negative collector plate comprises an ultrasonic welding needle, an ultrasonic welding needle protruding welding head, a roll core, a steel shell, an ultrasonic welding bottom film, a collector plate and a laser welding groove. The steel shell is made of SPCC, the collector plate is round or strip-shaped, the collector plate is made of pure copper T2, the hardness of the collector plate is M-state HV48-59, the collector plate is plated with nickel on a single side, and the collector plate is used for preventing laser high reflection, an ultrasonic spot bottom welding surface is not plated with nickel, and self-discharge abnormity caused by nickel powder generated by ultrasonic spot bottom welding high-frequency vibration is prevented. And nickel plating affects the hardness of the collector plate and prevents the hardness from affecting the ultrasonic point bottom welding strength. According to the invention, the resistance and the point bottom pseudo soldering rate are reduced, the point bottom welding strength and the welding area are increased, so that the internal resistance of the battery is reduced to achieve the purpose of low charge-discharge temperature rise, the safety performance is improved, and high-rate charge-discharge can be realized; and the problem of rusting at a laser penetration welding shell bottom weld bead is solved.

The utility model belongs to the field of protection equipment, particularly relates to a demolition engineering protection device, and aims to solve the problems that the existing demolition engineering protection device is troublesome to mount during use, affects the demolition time efficiency of roads and bridges, needs to occupy a large space during transportation and reduces the transportation efficiency. A third supporting plate and two first supporting plates are arranged on the upper surface of the base, the third supporting plate is located between the two first supporting plates, second supporting plates are arranged between the third supporting plate and the first supporting plates, protective cloth is fixedly installed between the first supporting plate and the second supporting plate which are adjacent, and protective cloth is fixedly installed between the second supporting plate and the third supporting plate. According to the utility model, the first supporting rod and the second supporting rod are coaxially and rotatably connected, so that the moving stability of the second supporting plate is improved, the installation is more convenient, the time efficiency of road and bridge dismantling is not influenced for a project with a short dismantling construction period, and the first supporting plate, the second supporting plate and the third supporting plate are folded, so that the storage and the transportation are convenient.

The utility model belongs to the technical field of wear-resistant elbows, and particularly relates to a wear-resistant grain elevator elbow which comprises an elbow body and a support, and connecting plates are fixedly connected to the front side wall and the rear side wall of the elbow body. The wear-resistant lining plate has high wear resistance and impact resistance and can bear long-time collision and friction and protect the elbow body, the section of the elbow body is square, grain suction space is increased, blockage is not prone to being caused, welding of the connecting plates is facilitated, wear to the inner wall of the elbow body during grain transportation can be reduced through the metal coating, and the service life of the elbow body is prolonged. And when the wear-resistant lining plate needs to be replaced, the nut is unscrewed, the cover plate can be taken down, replacement is facilitated, the interior of the elbow body can be conveniently cleaned, a metal coating is conveniently sprayed, the elbow body can be well protected, the wear resistance of the elbow body is improved, and the service life of the elbow body is prolonged. And only the easy-to-wear part needs to be replaced, so that the maintenance cost is reduced.

The utility model discloses a hidden car door hinge connecting structure of an electric van, which comprises a car door assembly, a connecting column and a hinge connecting piece, the car door assembly is hinged with the connecting column through the hinge connecting piece, the hinge connecting piece comprises a movable hinge, a fixed hinge and a pin shaft, the movable hinge comprises a hinge plate, an end plate, an inclined plate and a connecting plate, one side of the hinged plate is hinged to the fixed hinge through a pin shaft, the end plate is perpendicularly connected to the side, away from the pin shaft, of the hinged plate, a first notch is formed in the outer side wall of the connecting column, the end plate is located in the first notch, and the inclined plate is connected to one side of the end plate; the connecting plate is connected to one end of the inclined plate and fixedly connected with the outer wall frame. On the basis of realizing stable connection of the automobile door and the connecting column, the hinge and connecting welding spots thereof can be effectively hidden, the attractiveness of the whole automobile is improved, the problem that a hinge connecting piece is easy to rust due to environmental factors is solved, and the service life of the hinge connecting piece is prolonged.

The invention relates to the technical field of ship stern tube construction, in particular to a stern tube epoxy baffle fixing device which comprises stern tube bodies and a connecting steel casting, the stern tube bodies are fixed to the two ends of the outer side of the connecting steel casting, and threads are fixed to the ends, close to each other, of the outer sides of the two stern tube bodies. Epoxy baffle assemblies are assembled at the ends, close to each other, of the two stern tube bodies and located on the outer sides of the connecting steel castings, pressure applying mechanisms used for driving the semi-arc baffles to be sealed with the stern tube bodies are arranged on the outer sides of the stern tube bodies, the pressure applying mechanisms comprise threaded rotating rings and traction claws, and the traction claws are assembled on the outer sides of the threaded rotating rings. One end, far away from the threaded rotating ring, of the traction claw is abutted against and contacted with the semi-arc-shaped baffle; the part between the stern tube body and the continuous steel casting is effectively sealed through the epoxy baffle assembly, so that water is prevented from permeating into the part between the stern tube body and the continuous steel casting, and a water source is prevented from entering the stern tube.

The utility model relates to the technical field of power transmission, and discloses an aluminum alloy bus duct shell, which comprises a first side plate, a second side plate, a first cover plate and a second cover plate, the first side plate and the second side plate are C-shaped plates, the first side plate and the second side plate are oppositely arranged, a gap is arranged between the first side plate and the second side plate, a first heat dissipation part is arranged outside the first side plate, and a second heat dissipation part is arranged outside the second side plate. A first heat dissipation part is arranged on the outer side of the first side plate, a second heat dissipation part is arranged on the outer side of the second side plate, the first cover plate is connected with one end of the first side plate and one end of the second side plate, the first cover plate is an I-shaped plate and comprises a first vertical plate, a first horizontal plate and a second vertical plate which are sequentially connected, and a first supporting plate is arranged on the outer side surface of the first horizontal plate; the second cover plate is connected with the other end of the first side plate and the other end of the second side plate, the second cover plate is an I-shaped plate, the second cover plate comprises a third vertical plate, a second horizontal plate and a fourth vertical plate which are connected in sequence, and a second supporting plate is arranged on the outer side surface of the second horizontal plate. The LED lamp is high in supporting capacity, not prone to deformation, even in heat dissipation and light in weight.

The invention belongs to the technical field of water pumps, and particularly relates to a coaxial differential drive water pump which comprises a base. The left side of the top end of the base is fixedly connected with the bottom end of a first fixing block, the right side end of the first fixing block is fixedly connected with the left side end of a motor, the right side end of the motor is fixedly connected with the left side end of a first belt wheel, the right side end of the motor is fixedly connected with the left side end of a first pump body, and a filtering and cleaning mechanism is arranged at the top end of the base. Through the design of the filtering and cleaning mechanism, the function of filtering and cleaning is achieved, and the problems that an existing water pump is not provided with an assembly capable of being used for filtering, when the water pump is used, impurity particles in water easily wash the interior of the water pump, corrosion of a pump body is accelerated, and breakage and air leakage are easily caused are solved; and meanwhile, when too many impurities are accumulated, an impeller opening can be blocked, water cannot be normally sucked from the outside, and water cannot be normally drained, so that the protection of the pump body is improved.

The utility model discloses a tobacco cutter convenient to clean and maintain, which comprises a walking chassis, the walking chassis comprises a chassis frame, a tobacco cutter body is arranged on the chassis frame, and the tobacco cutter body comprises a transmission device and a supporting frame which are fixedly arranged on the chassis frame. The supporting frame is connected with a mounting frame, the mounting frame is divided into two layers, the upper-layer frame body of the mounting frame is provided with a first knife rest group mounting position which is longitudinally arranged, the lower-layer frame body of the mounting frame is provided with a second knife rest group mounting position which is transversely arranged, and a first knife rest group is slidably arranged in the first knife rest group mounting position; a second tool rest set is slidably installed in the second tool rest set installation position, and the second tool rest set and the first tool rest set are the same in structure and are perpendicular to each other. According to the tobacco cutter, the protective door is formed in the tobacco cutter body, the knife rest set only needs to be slidably pulled out or installed and pushed in from the knife rest set installation in a sliding mode, an operator can easily disassemble and install the knife rest set, and cleaning and maintenance convenience of the tobacco cutter is enhanced.

The utility model belongs to the technical field of control valves, and particularly relates to a variable frequency drive fluid control valve assembly which comprises a valve body, a fixing plate is fixedly installed on the lower surface of the valve body, a supporting assembly is fixedly installed on the side wall of the fixing plate, a bearing plate is fixedly installed at one end of the supporting assembly, and a bearing plate is fixedly installed on the side wall of the valve body. A guide plate is connected to the upper surface of the bearing plate in a penetrating mode, a mounting plate is fixedly mounted at one end of the guide plate, a partition plate is fixedly mounted on the lower surface of the mounting plate, a groove is formed in the upper surface of the valve body, the partition plate is slidably mounted in the groove, and the partition plate is connected with the two ends of the inner wall of the valve body in an attached mode. The valve has the advantages that when the valve body needs to be opened and closed, the guide plate drives the partition plate to move, the water flow partition speed is increased, and the situation that water flow cannot be accurately controlled due to the fact that manual opening and closing efficiency is too low is avoided.

The utility model discloses a surface treatment device for spraying an ultra-high performance concrete reinforcing structure, which comprises an outer frame arranged on the periphery of the reinforcing structure and a mounting seat movably arranged on the outer frame, and a first driving mechanism is arranged on the outer frame and used for driving the mounting seat to move vertically. A second driving mechanism is arranged on the outer frame and used for driving the mounting base to move in the circumferential direction, a plastering device or a spraying device is detachably arranged on the mounting base, the plastering device comprises a plastering ruler and a water mist spray head, and the spraying device comprises a spraying spray head. When the plastering device is mounted on the mounting seat which can move in the circumferential direction and the vertical direction, timely trowelling treatment of an ultra-high performance concrete spraying surface can be realized, and when the spraying device is mounted, a decoration coating can be sprayed on the surface of the troweled spraying surface to form a spraying surface protection layer, so that the appearance quality of the spraying surface is greatly improved, and the spraying quality of the ultra-high performance concrete spraying surface is improved. And the problem of corrosion caused by direct contact between the steel fibers and the external environment can be improved.

The application discloses a safe automatic opening and closing umbrella which is simple in structure, capable of collecting water drops and preventing floor from being wetted. The umbrella comprises an umbrella body, a handle provided on the umbrella body and a handle sleeve. The handle sleeve is provided with a water draining channel for the umbrella body to pass through. A water collecting groove is formed in the bottom of the handle sleeve and is communicated with the water draining channel. A closing device is arranged at the port of the water collecting groove of the handle sleeve and is used for closing the water collecting groove after the water collecting groove collects water.