38results about How to "Conducive to maintaining pressure" patented technology

The invention relates to an automatic clutch control system which comprises a clutch, a motor, a speed reducer, a transmission element, a main clutch control cylinder, a working cylinder, a fluid source and a control device. The motor is connected with the transmission element through a speed reducer, the transmission element is connected with a piston rod of the main clutch control cylinder and used for pushing the piston rod to move, the fluid source is communicated with the working cylinder through the main clutch control cylinder, a piston rod of the working cylinder is connected with a release fork of the clutch to push the release fork to move, and the control device is in signal connection with the motor. Preferably, the speed reducer is a worm-gear reducer, the transmission element is a cam mechanism or screw transmission mechanism, and two clutch rotating-speed detecting devices are positioned at two ends of the clutch respectively to detect rotating speeds of the two ends of the clutch, and are in signal connection with the control device. The automatic clutch control system is ingenious in design, suitable for controlling of automatic clutches of hybrid electric vehicles, compact in structure, reliable in operation, low in cost and suitable for wide popularization and application.

The invention discloses an integrated self-locking intelligent informationized hydraulic cylinder device. The integrated self-locking intelligent informationized hydraulic cylinder device comprises an outer cylinder body and an inner cylinder body. An inward-contracting shoulder surrounds the opening of the inner cavity body, a columnar boss is arranged at the bottom of the outer cylinder body and stretches into the opening of the inner cylinder body, a peripheral outward-expanding shoulder is arranged at the end of the columnar boss, a first oil cavity is formed between the bottom of the outer cylinder body and the inward-contracting shoulder of the inner cylinder body, a second oil cavity is formed between the inner side of the bottom of the inner cylinder body and the end of the columnar boss, and an oil return cavity is formed between the outward-expanding shoulder of the outer cylinder body and the inward-contracting shoulder of the inner cylinder body. An oil cylinder clamping ring is connected with an oil cylinder skid shoe in a pressing mode and is connected to the outside of the bottom of the inner cylinder body through a bolt in a threaded mode. An oil return pipe connector is communicated with the oil return cavity through an oil return pipe, an oil inlet pipe connector is connected to a hydraulic lock through an oil inlet pipeline, the hydraulic lock is connected to the first oil cavity through an oil inlet pipeline, an oil pressure sensor is communicated with the first oil cavity, a displacement sensor is connected with a connecting rod through a bolt in a threaded mode, the connecting rod is connected with the oil cylinder clamping ring, and the first oil cavity is communicated with the second oil cavity through an oil pipe.

The invention discloses a positive-pressure and explosionproof power generator. The positive-pressure and explosionproof power generator comprises a power generator body, a positive-pressure purging pipeline, a wiring cabinet, a neutral point cabinet, an excitation system and a positive-pressure purging device and is characterized in that the power generator body comprise a stator, a rotor and anair-air cooler and employs a light box-type structure of an end cover-type bearing, an integral end cover and a steel plate welding engine base, the air-air cooler is placed at the top of the power generator body and employs a pipeline forced ventilation air-air-cooling system, at a steam end of the power generator, a power generator body positive-pressure sealing space is formed by the light box-type structure and the air-air cooler, and at an excitation end of the power generator, an excitation magnetic system positive-pressure sealing space is formed by an excitation machine support and anexcitation machine outer cover. By the structure, the explosionproof performance of the power generator can be effectively improved; and moreover, the positive-pressure and explosionproof power generator is simple to operate and maintain and convenient to install and connect and is good in air tightness, and long-time and safe running of the power generator set in a flammable and combustible environment can be achieved.

The invention provides a water supply machine, and belongs to the field of water supply equipment. The water supply machine comprises a water pump, a pressure sensor, a controller and a machine box, wherein the pressure sensor is electrically connected with the controller; a contactless switch is arranged on the water pump; the controller is electrically connected with the water pump through the contactless switch; the pressure sensor is used for sensing the water supply pressure of the water pump; the controller contacts the on-off state of the contactless switch according to the pressure sensed by the pressure sensor. The water supply machine belongs to a water supply machine with the advantages that the water pressure is adjustable; the service life is long; the pressure regulation starting is fast.

The invention discloses a seal for a brake caliper with good oil resistance, relates to the technical field of sealing of an automobile brake caliper, and is made of the following components: nitrile rubber, EPDM rubber, dioctyl maleate, White carbon black, triallyl isocyanurate, lignin phenolic resin, aluminum oxide coated carbon fiber, vulcanizing agent, anti-aging agent, plasticizer; the seal for brake caliper prepared by the present invention has good oil resistance , heat resistance, good air tightness.

The invention discloses an external gas assisted injection molding method based on ultrasonic measurement and molding equipment. The equipment comprises an injecting mold; the injecting mold is provided with a pouring gate, a cavity, a gas needle, a gas inlet channel, a material pulling rod and an ultrasonic probe; the ultrasonic probe is connected with a signal processing device; the signal processing device is connected with a control device and a gas assisted control device in sequence; the gas assisted control device is connected with the gas needle through the gas inlet channel; and compressed air in the gas assisted control device enters the cavity through the gas needle. According to the external gas assisted injection molding method based on the ultrasonic measurement and the molding equipment, an ultrasonic detection technology is reasonably used for external assisted molding equipment, proper gas injection time is simply and rapidly judged and the production efficiency is improved; and meanwhile, shrink marks on the surface of a molded part can also be effectively removed and the product quality is improved.

The invention discloses a hydrostatic test automatic test system, and belongs to the technical field of water hydraulic equipment testing. The hydrostatic test automatic test system is characterized in that an air source integrated control valve bank is sequentially connected with an air pump, a first air source reversing valve bank, a one-way valve, a container unloading valve, a high-pressure filter, a manual stop valve, a pressure sensor, an overflow valve, a pressure stabilizing tank, a high pressure pump, a motor and a water tank through connecting pipelines; the high pressure pump is connected with a pressure maintaining flat valve bank. A pressure relief device comprises a pressure relief flat valve bank, a second air source reversing valve bank, an electric throttle valve and a high-pressure sensor; the pressure maintaining flat valve bank and the pressure relief flat valve bank are connected in parallel; a high-pressure input interface, a high-pressure output interface, a pressure relief input port and a pressure relief output port are fixed on the rack, and the electric throttle valve and the high-pressure sensor are respectively connected with the pressure relief input port. The pressure resistance of various pipelines, high-pressure and low-pressure pressure vessels and equipment can be tested, and the system has the characteristics of high pollution resistance, high pressure maintaining precision, safety and reliability in testing and long service life.

The invention belongs to the technical field of polypropylene cables, and particularly relates to a polypropylene cable and an insulating layer repairing method and application thereof. The invention provides a polypropylene cable and an insulating layer repairing method and application thereof, and the repairing method comprises the steps: wrapping a pencil stub slope insulating layer with a polypropylene insulating tape, then sequentially wrapping the polypropylene insulating tape with a rubber soft film, a metal foil and a polyimide film from inside to outside, and finally heating the polypropylene insulating tape to melt the polypropylene insulating tape, the polypropylene insulating tape can provide lasting radial pressure, the metal foil can uniformly transfer heat, and the polyimide film has relatively high tensile strength and relatively low load elongation, so that the polypropylene insulating tape and the to-be-repaired position of the polypropylene cable insulating layer are fused and combined, the repair of the polypropylene cable insulating layer is realized, and the service life of the polypropylene cable insulating layer is prolonged. The electrical performance of the polypropylene cable is guaranteed, and the technical problem that in the prior art, a polypropylene cable insulation layer repairing technology is lacked is solved.

The invention relates to the field of injection molds, in particular to an injection mold for engineering plastics, which comprises a rotating male mold, a rotating shaft, a first female mold, a second female mold, a third female mold, a fourth female mold, a fifth female mold and a sixth female mold, the two ends of the rotating shaft are located outside the upper outer surface and the lower outer surface of the rotating male die, and the rotating male die is matched with the first female die, the second female die, the third female die, the fourth female die, the fifth female die and the sixth female die. According to the invention, the injection mold is changed from a traditional square structure consisting of a convex mold and a concave mold into an integral mold consisting of a hexagonal columnar rotary convex mold, a first concave mold, a second concave mold, a third concave mold, a fourth concave mold, a fifth concave mold and a sixth concave mold; and the number of one-time injection molding products is increased, so that the purpose of increasing the production efficiency is achieved.