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

The present invention relates to a hydraulic electron pump in new ultramicro-type to overcome the problems of low performance, easy blocking, easy decompressing and low efficiency of flow and operation existed in original technology, which consists of fixed piezoelectric ceramic inverting plate in pump cavity formed by pump body and pump cover, outer setting one way valve of liquid inlet in plug in individual piece, one way valve formed by valve gate assembled internally in valve body and spring. It has the advantages of large flow, not easy to block, convenient assembling, high finished product ratio, good uniformity of products and suitable for large scale production in industralization.

A furnace door device for curing the inner coating of pipes, which includes a furnace door, frame columns are arranged on both sides of the furnace door, a frame beam is arranged on the upper ends of the two frame columns, and a protruding end is provided at one end of the frame beam , there are two driven sprockets on the frame beam, a driving double sprocket is set on the protruding end of the frame beam, and a balance hoisting object is arranged at the lower part of the protruding end, and the upper end of the balance hoisting object is connected with Two furnace door lifting chains, the two furnace door lifting chains are connected to the upper end of the furnace door after passing through the active double sprocket and respectively passing through two driven sprockets to form a balanced electric lifting method; frame columns on both sides of the furnace door There are two sets of cylinders for pneumatically sealing the furnace door. The beneficial effects of the present invention are: adopting the balanced electric lifting method to improve the safety and reliability of the furnace door; using the cylinder to push the furnace door to achieve the purpose of fast sealing, which can save time and improve work efficiency. It can fully meet the process requirements of the curing furnace.

The invention discloses an integral multiway valve with integral hydraulic locks and a fouling resistant plug-in mounting overflow valve. The integral multiway valve comprises an oil inlet valve block, a plurality of working valve blocks and an oil returning valve block. The oil inlet valve block, the working valve blocks and the oil returning valve block are of an integral structure. The oil inlet valve block is provided with an oil inlet P, and the oil returning valve block is provided with an oil returning port T. Each working valve block is provided with a working oil port, wherein a valve rod is inserted into the working oil port. Each working valve block is internally provided with one integral hydraulic lock, one valve rod, one double-lock hydraulic control push rod and a back plug. Each integral hydraulic lock comprises a steel lock valve base, a lock valve element, a lock valve sleeve and a reset spring. The oil inlet valve block is internally provided with the plug-in mounting overflow valve. The integral multiway valve with the integral hydraulic locks and the fouling resistant plug-in mounting overflow valve has the advantages that the risk of oil leakage can be reduced, internal leakage is avoided, working reliability of the valve is improved, the machining technology is simplified and machining cost 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.

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 field of oil supplement of high-voltage sleeve pipes, in particular to a method and device for supplementing oil to an electrified transformer sleeve pipe. Electrified oil supplement is carried out on the top of a primary sleeve pipe and a secondary sleeve pipe of a transformer with the voltage level higher than 66kV by adopting an equipotential operation method. The method comprises the following specific operating steps that (1) the phase position of the sleeve pipe must be checked before the oil supplement to confirm the consistence with the emergency repair instructions send out by production scheduling, and the facts that the quality of oil in an oil supplementing barrel is qualified and the type of the oil in the oil supplementing barrel is identical with that of the oil inside the sleeve pipe are confirmed; (2) an insulation herringbone ladder is assembled on the ground; (3) after a potential electrician climbs to an operation site at the upper end of the sleeve pipe of the transformer along the herringbone ladder, a safety belt and a shielding potential equalizing wire are hung, sealing screws of the sleeve pipe are unfastened, and an oil filling pipe of the oil supplementing device is inserted into a sealing hole of the sleeve pipe. Compared with the prior art, the method and device for supplementing the oil to the electrified transformer sleeve pipe have the advantages that an equipotential mode of electrified operation is adopted, the blank in the technical aspect of the electrified oil supplement of the transformer sleeve pipes is filled, and good economic benefit and wide application prospects are achieved.

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 discloses a multi-roller rope withdrawing and releasing device comprising a base. A guide roller bracket is fixed to each side of the base correspondingly, a plurality of rope withdrawing and releasing rollers are mounted at the outer end of each guide roller bracket, a middle connecting frame is connected to the inner ends of the guide roller brackets, a rope releasing rotating shaft is connected to the middles of the two guide roller brackets, a plurality of rope pressing devices are arranged at both ends of the rope releasing rotating shaft, a reel bracket is arranged at each end of the middle connecting frame correspondingly, a rope withdrawing rotating shaft is arranged between the two reel brackets, rope withdrawing reels matched with the rope pressing devices on the side are arranged at both ends of the rope withdrawing rotating shaft, a rope hanging roller component is arranged on each rope withdrawing reel, a limiting collision block is arranged on each rope hanging roller component, a limit switch is arranged on each limiting collision block in a matched manner, and a rope guide device is arranged on each guile roller bracket. The multi-roller rope withdrawing and releasing device has the advantages of reliable and stable working, high safety and long service life.

The invention provides a hydraulic support roping rigging and a roping system. The roping rigging comprises two connecting components and a chain, the two connecting components are respectively used for being fixed with a guard plate on the rear side of a hydraulic support, two ends of the chain are connected with the connecting components respectively, the chain is used for being connected with a winch steel wire rope in a clasp joint mode so as to roping the hydraulic support, an eave hook for connecting a steel wire rope bypasses the chain so as to be downwards fixedly connected with a flat car, and the clasp joint connection position of the steel wire rope and the chain is higher than the fixed position of the eave hook and the flat car. According to the hydraulic support roping rigging and the roping system, the roping rigging is arranged to lift the steel wire rope on a winch, the tensile force can be stressed on the height which is close to the center of gravity position of the hydraulic support, thereby the defect of unsafe transportation caused by forward bending of the hydraulic support is prevented, and the safety and reliability of the operation are improved.

The invention discloses a novel cable-dumbbell test piece preparing device. The novel cable-dumbbell test piece preparing device is characterized by comprising an electric pressing plier (1), a dynamic contact (2) and a static contact (3). The dynamic contact (2) comprises an installing base (4) and a dumbbell mold (5); the installing base (4) is inserted into a mold connecting opening (6) in the dynamic contact (2) through a connecting rod (7) of the electric pressing plier (1) and connected with the electric pressing plier (1), the installing base (4) is connected with the dumbbell mold (5), a mold notch (11) is arranged on a trapezoid boss at the end of the dumbbell mold (5), and a semi cylinder provided with a rectangular boss of the static contact (3) is clamped into a clamping groove in the electric pressing plier (1) and connected with the electric pressing plier (1). The novel cable-dumbbell test piece preparing device is easy to operate, safe, reliable, high in mechanical strength and reliability, low in error and wide in application range, the labor intensity and the technical requirements of power cable quality detection are reduced, and the detection efficiency is improved.

The invention discloses a double-rail double-slideway car arrester which comprises two rails, car arrester slideways, car arrester sliding blocks, a connecting mechanism, a supporting mechanism, an anti-disassembly mechanism and an anti-derailing mechanism, the two rails are fixedly supported through the supporting mechanism, and the car arrester slideways are fixedly arranged on the two sides of the two rails. Two car arrester sliding blocks are slidably connected with the inner sides of the two car arrester slideways through the two rails correspondingly, the inner sides of the two car arrester sliding blocks are fixedly connected through the connecting mechanism, and the two ends of the anti-derailing mechanism are connected with the outer side sliding ways of the car arrester slideways correspondingly and fixedly connected with the outer sides of the car arrester sliding blocks. The two ends of the anti-disassembly mechanism are fixedly connected with the inner side of the car arrester sliding block and the bottom of the connecting mechanism respectively, by means of the scheme, major potential safety hazards are avoided, the failure rate is reduced, the workload of overhaul and maintenance is reduced, the working efficiency is improved, and the car arrester effectively guarantees safe operation of a rail transportation system and a wagon of a vehicle; and the economic benefit is greatly increased.

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.