34results about How to "Improve job safety and reliability" patented technology

The invention discloses a low-torque retracting rope winding drum. The low-torque retracting rope winding drum comprises a winding drum body fixed onto a rotating shaft, wherein the winding drum body comprises a winding drum shaft arranged on the rotating shaft in a sleeving mode; two side discs are arranged on the two sides of the winding drum shaft; a plurality of wire winding rods are arranged outside the winding drum shaft between the two side discs; a fixed support is fixed on the winding drum shaft; a hanging rope wheel is assembled on the fixed support at the position corresponding to the center of the winding drum shaft; one end of a steel wire rope is fixed onto the hanging rope wheel, and the other end of the steel wire rope is wound on one rope winding rod. The hanging rope wheel is additionally arranged on the low-torque retracting rope winding drum, and is arranged at the position corresponding to the center of the winding drum shaft; the steel wire rope is fixed onto the hanging rope wheel, so that when the steel wire rope is retracted by the winding drum, the torque of the winding drum is reduced by the stress at the center of the rotating shaft, and then a rotating assembly is protected, so that the stability and reliability of the equipment are improved, and the maintenance cost of the equipment is reduced.

The invention relates to the technical field of valves, in particular to a vacuum breaker valve, namely a negative pressure siphoning backflow vacuum valve comprising a valve body. The left side of the valve body is provided with a first pipe orifice used for being connected with an upstream water pipe; the right side of the valve body is provided with a second pipe orifice used for being connected with a downstream water pipe. The valve body is provided with a hollow cavity inside. The negative pressure siphoning backflow vacuum valve further comprises a cover plate with T-shaped longitudinal section; the cover plate comprises a transverse plate and a vertical plate; the transverse plate is arranged inside the hollow cavity; the bottom of the hollow cavity is provided with an opening; the vertical plate extends out of the opening; the cover plate can move up and down along the opening; the bottom of the hollow cavity is further provided with a suction hole outside the opening; the transverse plate can cover and close the suction hole. The negative pressure siphoning backflow vacuum valve is capable of safely operating and high in reliability; when in normal use, the valve has good sealing performance and is free of water leakage; during air supply, the cover plate is flexible and the volume of air supply is high; operational control is not required, operation is fully automated, atmospheric pressure is used as a power source, and connecting other power sources is not required. The negative pressure siphoning backflow vacuum valve is installed with no need for debugging.

An electric charge control system for the trolley bus charged at charging station is composed of left and right vehicle position detecting sensors, double receiving switch, high-current fast charger with power supply state monitor, 3-position-5-way electromagnetic valve, lifting and lowering magnetic stroke switch, receiving controller, display, and manual switch for lowering bow.

The invention refers to a drainage device of gas conduit condensate. The existing drainage device is steeliness barrel shaped drainage device. It has disadvantages of device discovered, environment influenced, large land occupied, high energy consumed, short useful life and low reliablity. The invention supplies a drainage device for gas conduit that includes vertical drainer and stagnant pool. The drainer, made up of high pressure water sealed room and low pressure water sealed room, is integrated together with stagnant pool. It is located underground. The body of it is made up of heat-insulated and corrosion resisted concrete. The low pressure water sealed pipe connects the bottom of the high pressure water sealed room and low pressure water sealed room. The top of the low pressure water sealed room is connected to stagnant pool through condensation overflow pipe that is made up of corrosion resisted engineering plastic. And it is constructed into concrete wall. The invention has the advantages of high safety and reliability, long useful life, low energy consumption and good environment consistency.

Provided is a defensive grappling device. The clamp cuff end and the force exertion end of each clamp cuff are bent towards the same side, and the bending points are coaxial hinge points of the left and right clamp cuffs and a substrate; when a left clamp cuff force exertion end and a right clamp cuff force exertion end are formed and are closed inwards after the left clamp cuff is hinged to the right clamp cuff, the clamp cuff ends are of an outward opening structure; a middle rod is fixedly provided with a push-pull rod, the push-pull rod extends into the substrate and is connected with the substrate to form a sliding structure, and the section, extending into the substrate, of the push-pull rod is provided with four inhaul cable control line fixing ends which are used for fixing end sockets of two inhaul cable control lines; the clamp cuff force exertion ends are provided with pulleys, and each inhaul cable control line is connected with the pulley of one of the clamp cuff force exertion ends, so that when the push-pull rod moves outwards towards the substrate, the inhaul cable control lines drive the clamp cuff force exertion ends to be closed inwards and the clamp cuffs are opened, and when the push-pull rod moves inwards towards the substrate, the inhaul cable control lines 21 drive the clamp cuff force exertion ends to be opened outwards and the clamp cuff ends are clamped closely. The defensive grappling device has the advantages that the structure is simple and practical, the device is well stressed, in the opening or closing process of the clamp cuffs, the formed brake control effect is good, and work safety and reliability are high.

The invention discloses a manufacturing method of a high anti-fatigue bolt. The manufacturing method comprises the following steps: a bolt provided with a head part, a rod part and a thread section is machined by adopting a tampering forming method, when threads of the thread section are machined, firstly a transition section is machined on the rod part, and positioned between the thread section and the rod part, the maximum diameter of the transition section is smaller than the outer diameter of the thread of the thread section and the diameter of the rod part, threads with needed standard thread pitch are rolled on the thread section by adopting a thread rolling wheel, when the threads are rolled, ending threads at a position where the thread section and the transition section are connected are of incomplete threads, namely the thread pitch of the ending threads is smaller than or equal to half of the standard thread pitch on the thread section. The bolt has the advantages of being high in anti-fatigue strength, small in size and light in weight, and the manufacturing method has the advantages of being simple in technology, lower in manufacturing cost, fast to produce, high in working safety and reliability, convenient to both use and maintain and the like.

The invention relates to an intelligent airless exposed gear jet lubrication device which solves the problem of blockage during jet lubrication in the lubrication industry. The intelligent airless exposed gear jet lubrication device comprises an air pump, an oil tank, an oil pipe, a jet pump, a control box and a nozzle, wherein the air pump is connected on a multi-position multi-way electromagnetic valve through a pipeline; the multi-position multi-way electromagnetic valve is connected on the jet pump communicated with the oil tank through a pipeline; the jet pump is connected with a multifunctional electromagnetic valve; an oil return pipe is respectively connected with the oil tank and the multifunctional electromagnetic valve; the multifunctional electromagnetic valve is further connected with the nozzle mounted on a nozzle bracket; a video head is mounted above the oil nozzle; an oil filling pump is connected with the oil tank and the multi-position multi-way electromagnetic valve through an oil filling pump air pipe; the video head is connected with an industrial computer through a video acquisition wire; a temperature sensor in the oil tank is connected with the industrial computer; and a heater is mounted in the oil tank. According to the invention, the problems that the jet lubrication coagulates in the pipelines and a distributor has local coagulation points are solved, thereby reducing maintenance and servicing and enhancing work efficiency.

The invention relates to a fault alarm check drainage system and a check drainage method, belonging to the technical field of building water supply and drainage, and solves the problem that the existing gravity drainage system is applied to basement drainage and cannot prevent backflow. The fault alarm check drainage system includes a check valve, an outer pipe of the check valve, a fault monitor, a monitoring component and a control system; the monitoring component is used to monitor the water level state in the outer pipe of the check valve; the control system includes a controller and an alarm device; The controller is connected with the monitoring component and the fault monitor, the controller is used to receive the water level signal monitored by the monitoring component and the information on whether the check valve is faulty detected by the fault monitor, and can judge whether the check valve is faulty, according to the Whether the check valve is faulty or not, the check valve and the alarm device will be sent an action command. The invention can be applied to the drainage of basements, solves the problem of failure of the drainage system caused by false alarm of the check valve due to malfunction, and improves the reliability of the drainage system.