242results about How to "Reliable closure" patented technology

The invention provides a valve device, wherein a valve is reliably sealed even if by small force with little leakage. Under the cutting state of a movable axis (21) moving downwards, a ring rib (6e) bunts against an open end of a first perforation hole (11) which forms an inflow path (12) around thereby jamming the path. A cavity part (C) is formed between an inner bottom (6f) inside an insertion part (6a) of a valve (6) at the front of the movable axis (21), therefore, the ring rib (6e) can fully performs elastic deformation, to reliably seal the open end of the first perforation hole (11), and obtain a valve device with little leakage.

A suspension type UAV (unmanned aerial vehicle) water sampler system comprises a UAV, a sampling control system and a sampling cup, wherein the sampling control system comprises a motor fixing plate, a wire reel, a center control board, a self-locking motor, a coupling, a rotary encoder, a sampling motor, a return baffle, a return buffer, a water level determining probe, a self-locking gear, a sampling cup pull rope and a return switch. The UAV stably stays at a specific height above the water surface through height determination, then the sampling cup accurately reaches a designated position underwater by controlling the number of turns of the wire reel, and finally, the sampling cup full of water samples firmly stays in the center of the bottom of the UAV through return sensing and the self-locking mechanism. The system can automatically finish the whole water sample collecting process and return through programs and requires no manual intervention. The major advantage of the system is the reliable, stable, intelligent, convenient and up-to-standard sampling process.

The invention relates to a hollow short implant of a dental implant, which comprises an one-stage structure and a two-stage structure, wherein the one-stage implant part is connected with an abutment part into a whole; the two-stage structure comprises an implant, a bridge adapter ring and a central bolt; peripheral cylinder spirochaeta of the implant part is divided into three stages, saw-tooth double thread in the main part of the implant can bear heavier load; the hollow structural design of the implant part keeps live bone column with a base and blood supply so as to enhance the supporting strength of the bone and the implant; a self-tapping socket can make bone tissue of the internal and external of the implant grow through and heal; a platform transfer design allows the epithelial cuff of the gum around the implant more reliable to avoid bone resorption caused by micro moving and micro leakage. The short hollow implant realizes combination of the internal and external bone, increases the combination area and supporting strength for a short or a long term, can be implanted rapidly with high strength, better retention in the early stage, high success rate in a long term, and solves the problem that the upper and lower jaws abrase the dental area in the conventional oral implant technology.

The invention belongs to the field of electric power construction tools and in particular relates to ratchet type insulation wire clamping pincers used for high-voltage electrified wire construction. The ratchet type insulation wire clamping pincers comprise a first insulation rod and a second insulation rod. A block type chuck and a hook-like chuck are respectively arranged on top ends of the two insulation rods. The ratchet type insulation wire clamping pincers also comprise a ratchet assembly. The ratchet assembly comprises a gear part, a back support and a locking piece. A ratchet, a handle part and a pawl are arranged in the back support. The locking piece comprises a top block and a press spring. The top block is in the same direction with the unidirectional locking direction of the pawl relative to the unidirectional locking direction of the ratchet. The top block is arranged on a moving route of the handle part or the pawl. A matching surface used for matching the handle part or the pawl is arranged on the top block. The pressing force direction, relative to the matching surface, of the handle part or the pawl is opposite to the elastic restoring force direction of the press spring. The pincers is highly practical and convenient and quick to use; and high safety during working is ensured while high-efficient hot-line work is ensured.

The invention discloses a by-pass switch interface circuit of a modular multilevel converter (MMC) valve sub-module and an implement method of the by-pass switch interface circuit. The interface circuit comprises a charging circuit and a trigger circuit, wherein the charging circuit is connected with the trigger circuit. The trigger circuit is connected with a closing coil of a by-pass switch, and an input power supply provides an energy-storage capacitor with power through the charging circuit. The input end of the trigger circuit is connected with the energy-storage capacitor, the output end of the trigger circuit is connected with the closing coil inside the by-pass switch, and the trigger circuit controls the connection and disconnection of the circuit through a thyristor. When a sub-module controller commands the by-pass switch to be turned off, the by-pass switch is closed immediately under the action of the interface circuit, that is a main contact of the by-pass switch is closed immediately, the auxiliary contact turns into normally open state from former normally close state, and a signal that switch is closed successfully is reported back to the sub-module controller. The interface circuit has the advantages that reliable control over the by-pass switch closing by the sub-module controller is realized and power requirement of the input power supply is reduced.

The invention discloses a horizontal well stage-unlimited sectional reconstruction method. The method comprises the following steps that: a, a signal receiver on a sliding sleeve sends a search signal within a set range; b, a signal projector is put into the well, when the signal projector enters into the set range, the signal projector receives the search signal and sends a control signal to the signal receiver; c, the signal receiver stimulates a power mechanism after receiving the control signal, the power mechanism pushes a piston to move upwards and open a sand blasting hole, inner and outer communicated channels of an oil pipe are opened, and under the action of the piston, a ball seat generation tube of the sliding sleeve generates a ball seat, and the first section reconstruction is implemented; d, after the first section reconstruction is finished, a ball is added to block the first section reservoir, and the inner and outer communicated channels of the oil pipe are closed; e, the steps above are repeated for orderly performing reconstruction of subsequent sections. By the horizontal well stage-unlimited sectional reconstruction method, stage difference is avoided, the number of stages of sections is not limited by the inner diameter of the well bore, and stage-unlimited large-scale sectional fracturing reconstruction can be realized.

The invention discloses a cutting mechanism for a drawn wire at a sprue of an injection mold. The cutting mechanism comprises an upper sheath and a lower sheath. A nozzle of an injector is arranged in a positioning ring which is arranged on the upper sheath. The lower part of the upper sheath is connected with a mold cavity. An upper thimble plate and a lower thimble plate are arranged between support blocks on the lower sheath. A through hole is formed in the lower sheath. A pushrod of the injector penetrates through the through hole, and contacts with the lower thimble plate. Thimbles and a return pin are fixedly arranged in the upper thimble plate. The return pin penetrates through a mold core. A plastic part is arranged between the mold core and the mold cavity. The cutting mechanism is characterized in that a cutting groove is formed in the mold cavity; an injection hole is formed in a sprue cutting block in the cutting groove, and is aligned with the nozzle of the injector and a runner hole of the mold cavity; one side of the sprue cutting block is connected with a compression spring which contacts with the inner wall of the mold cavity, and a pushrod is fixedly arranged on the other side of the sprue cutting block; an outer inclined surface is arranged on the head part of the pushrod; a pressure block is arranged on the outer wall of the side, which is the same as that of the pushrod, on the mold core, and the pressure block is fixed together with the mold core through screws; a plane and an inner inclined plane are arranged on the inner wall of the pressure block; and the inner inclined plane contacts with the outer inclined plane of the head part of the pushrod.

The invention relates to the field of medical apparatuses, and discloses a disposable tubular viscera tying lift apparatus. The lift apparatus comprises a lock fastener, a lift ring and a protective cover. The lock fastener is a key component composed of a tying strap and a locking unit, one side of the tying strap is provided with antislip convex teeth, the other side is provided with length scales, the tying strap surrounds the tubular viscera by a circle, the movable end penetrates the locking unit prior to being tightened, and then the tubular viscera such as the esophagus, intestine and stomach can be tied, blocked, lifted and subjected to length measurement. In laparoscopic surgery, the lock fastener can be used individually, and the lift ring and the protective cover are designed for use in combination for laparotomy operation. The disposable tubular viscera tying lift apparatus is compact, elastic and flexible, and is convenient to use in narrow operation space. Compared with the past common gauze and other instruments, the disposable tubular viscera tying lift apparatus has the advantages that the no-tumor procedure during tumor distal bowel resection in laparoscopic radical rectectomy for rectal cancer is well realized; difficulty in open rectal carcinoma radical operation is lowered greatly; the disposable tubular viscera tying lift apparatus is taken out with specimens to be discarded at the end of operation.

Disclosed is a hinge which makes it possible to gently and reliably close a second linked object with respect to a first linked object. A hinge (100) is provided with: a case member (110) which is fixed to a main body corresponding to the first linked object; a pivoting member (120) which is fixed to a document pressing plate corresponding to the second linked object and is also pivotably linked to the case member (110); a first slider (140) which is slidably supported by the case member (110); a first spring (150) for urging the first slider (140); a second slider (160) which is slidably supported by the case member (110); and a second spring (170) for urging the second slider (160). A first cam part (121b) corresponding to the first slider (140) and a second cam part (121c) corresponding to the second slider (160) are formed on the pivoting member (120), and grease is provided in the gap between the second slider (160) and the case member (110).

The invention relates to a small bulk, highly sealed charge closer manufacturing technical solution, for reducing its bulk to the minimum and saving production and manufacturing costs and giving it larger use space and range. As compared with the existing charge closers, it has the following beneficial effects of: (1) simple structure: composed only of peripheral module and central module, simple in structure and easy to manufacture; (2) small bulk: able to be widely applied to various advanced, sophisticated and fine charge container products; (3) reliable closing: the higher the internal gas pressure is, the more obvious the closing effect is; in addition, and it can be widely applied to sport balls, sport airbeds, automobile tyres, airship chambers, and other gas compression containers.

The invention relates to a totally-enclosing and isolating type fire extinguishing method for extinguishing fire in a highway tunnel, and belongs to the field of fire protection. The method comprisesthe following steps: S1, rapidly starting a fire detection module in case of fire in the highway tunnel; and rapidly and accurately determining the special firing position in the tunnel through a firedetection device; S2, rapidly moving fire stopping modules to the fire area after the accurate firing position is obtained; S3, starting and stretching fireproof rolling doors in the fire stopping modules after arriving at the firing area; blocking and closing a combustion area from two ends; and starting spraying through water curtain nozzles on the fireproof rolling doors; an S4, sensing and measuring temperature and smoke concentration in real time through a temperature and smoke concentration sensor in the fire detection module on the top part of the tunnel after two ends are closed and isolated; sending the sensed data back to a control center; and comparing and analyzing. The method is a highway tunnel fire treatment method and is low in cost, high in efficiency, safe and reliable.

The present invention relates to a hydraulic aggregate for an underground transportation vehicle, which comprises the following components: a tank which comprises a tank shell and a tank shroud that are respectively made of plastic; a motor pump unit which is provided on the tank; a reflux filter unit which comprises a filter housing that is made of plastic and a filter element that is provided in the filter housing, wherein the reflux unit is provided with a hose joint and a discharge outlet, and the filter unit is provided in a flow path between the hose joint and the discharge outlet; and a reflux hose which connects the motor pump unit with the hose joint, wherein the filter housing is integrated with the tank housing or the tank shroud, and the tank shell and the tank shroud are welded with each other.

The invention discloses an electricity testing grounding device preventing ground wire connection in an electrified condition and preventing switch closing in the presence of a ground wire. A panel is arranged on a vehicle body. A test power supply, an electrified display apparatus, an electricity testing lock, an observation window, a grounding switch manual operating hole, a buzzer, a vehicle in / out hole, a secondary bolt and five-prevention locks are disposed on the panel. The electrified display apparatus and the buzzer are both electrically connected with the test power supply. The vehicle in / out hole and the grounding switch manual operating hole are each provided with one five-prevention lock. The grounding switch manual operating hole is connected to a manual operating shaft. A push plate is disposed at the bottom of the vehicle body. A grounding switch is disposed on the vehicle body. A sensor is arranged on the grounding switch, and is connected to a moving contact through a contact arm. The grounding switch is provided with a grounding moving contact, and the grounding moving contact is provided with an opening / closing spring. A grounding static contact is arranged to face the grounding moving contact. The manual operating shaft is connected to the grounding switch. A grounding bar is disposed at the bottom of the vehicle body. The advantages of the device are that safety of operation and safety of maintenance workers are effectively guaranteed.

The invention discloses a cashbox of a coin storing machine, comprising a lower box body and an upper cover; the upper cover comprises a panel, a return board door slidingly arranged on the panel, a third spring supplying reset force, and a coin inlet positioned on the panel. The return board door moves away from the coin inlet at an open position and seals the coin inlet at a close position. A first locking mechanism used for locking the return board door at the open position and a second locking mechanism used for locking the return board door at the close position are arranged between the lower surface of the panel and the return board door. The first locking mechanism comprises a locking plate fixed on the return board door, a push rod movably arranged on the panel with the end extending to the outer side of the panel, a protuberant locking lug is arranged on the surface of the locking plate and a brake block is arranged on the push rod; and the locking is realized by the clamping and matching of the brake block and the locking lug. When the cashbox is taken out, the push rod is operated from the outer side of the panel to enable the brake block to move away from the locking lug and release the return board door to the close position so as to close the coin inlet, therefore, the cashbox of the coin storing machine can prevent the worker from touching the coin.

The invention provides a probe case protection valve mechanism. Two valves (3) capable of sliding along two rails are respectively arranged in each rail (2) of the probe case protection valve mechanism, the two valves (3) in each rail (2) are respectively connected with one upper valve connecting lever (4) and one lower valve connecting lever (5), each lower valve connecting lever (5) is connected with one pushing valve connecting lever (6), two upper valve connecting levers (4) are connected with two lower valve connecting levers (5), and the other ends of two pushing valve connecting levers (6) are movably connected with a handcart chamber base plate. A breaker handcart (1) is provided with a valve drive part (7), and when the breaker handcart (1) moves to the handcart chamber direction, the valve drive part (7) is arranged to be a structure capable of pressing the two pushing valve connecting levers (6) to move downwards. The probe case protection valve mechanism can ensure that valves of a probe case protection mechanism can be opened and closed reliably.

The invention relates to a reliable pressure-relief and antibump apparatus of a low-voltage draw-out switch cabinet, wherein the apparatus has a simple structure; and the operation of the equipment is safe according to the invention. The apparatus has a cabinet body. A plurality of unit cells are arranged in the cabinet body; longitudinal pressure-relief channels are arranged at two sides of the cabinet body; the pressure-relief channels are communicated with pressure-relief devices in the unit cells, wherein the pressure-relief devices comprises pressure-relief baffles that are installed on separator boards of the unit cells and active pressure-relief baffles that are installed on the pressure-relief baffles actively. According to the invention, an articulated form is applied to a structure design, so that the pressure-relief and antibump apparatus is flexible and reliable when the apparatus is opened and closed. The apparatus is composed of sheet metal workpieces and self-tapping screws and has good craftiness. In addition, the apparatus has unique design concept and a blank of the low-voltage switch cabinet product can be filled in the aspect. Therefore, the apparatus provided in the invention has high popularization application value.

The invention relates to a method and an apparatus for joining two workpieces (6, 7) made of metal materials using a processing beam (2) by forming a weld seam along a lap joint, wherein a gap (16) formed between the workpieces (6, 7) at the lap joint is filled during the welding process. During the welding process, the processing beam (2) performs a three-dimensionally oscillating movement parallel and / or perpendicularly to the joint, said oscillating movement being superimposed on the advancing movement. The oscillatory parameters of said oscillation, the speed of advancement (vs), the power of the processing beam (2), and the angle of incidence of the processing beam (2) on the workpiece surfaces are dynamically adjusted during the welding process in such a way that the upper metal sheet (6) fuses to the required extent and the fused material (17) flows from the upper metal sheet (6) onto the lower metal sheet (7) such that the gap (16) is closed. The gap height is continuously measured during the welding process, and the process parameters are adjusted in such a way that the gap (16) can be reliably closed with fused material. In addition, the quality of the weld seam is analyzed in real time immediately upon creation of the weld seam, and the process parameters are adjusted in order to improve the quality of the weld seam.

The invention relates to a flat knitting machine with at least one needle bed (20,21) and carriages (50,51) capable of moving along the needle bed (20,21), and at least one looping system on the carriage, wherein the means (10) for clearing weft yarn, warp yarn and / or float yarn and / or stitch pressing into knitwear and / or holding the knitwear during the looping process, and the yarn contact area of the means (10) is aranged on one end of the looping system and outside the looping system.

The invention discloses a food fresh-keeping box which comprises a box body and a box cover, wherein the box cover is made of plastics, and raised frames are arranged on the box body along the peripheral direction; and an external flanging, which corresponds to a frame of the box cover, is arranged at a port of the box body; a plurality of integrally-formed fastening claws are arranged on the side wall of the box cover and are in hooked connection with the flanging of the box body so as to connect the box cover and the box body; the box cover and the box body are sealed by a seal ring; a fastening ring with a shaped cross section is movably sleeved outside the box cover and is made of elastically-deformed plastics; the length of the side wall of the fastening ring is adaptive to the length of the external side surface of the box cover and the lengths of the fixing claws connected with the fastening ring; a plurality of transversely-raised claws are arranged on the internal surface close to the lower end of the side wall of the fastening ring; when the box cover and the box body are connected in a fastening manner, the claws are in hooked connection with and leans against the lower end surface of the flanging of the box body; meanwhile, the side wall of the fastening ring is used for restricting the fastening claws of the box cover and is in hooked connected with the flanging of the box body in a fastening manner. According to the food fresh-keeping box disclosed by the invention, stable connection between the box cover and the box body is formed by the fastening ring which is movably sleeved with the box cover; and further the box body is reliably sealed by the box cover.

A device for dry battery (10, 20) (200), whose character is: used to generate heat heating institution (230), used to absorb through release water to regeneration of desiccant (260), described in the desiccant can absorb moisture from the battery (10, 20). Opening (220), water can be described through the opening from the battery (10, 20) reach the desiccant (260); And closed parts (240), described in the enclosed parts can use the heat generated to closed openings (220). Battery (10, 20), battery system, vehicle and method for dry battery (10, 20).

The invention relates to a heat exchanger, and especially a manufacturing method of an adsorption type heat exchanger. A plurality of composition parts of the heat exchanger are composed of iron-based material, such as pipes, a housing part enclosing the bottoms of the pipes and surrounding the bottoms and the pipes are assembled and then brazing is subsequently performed. The method can reliably braze joint welding lines in different widths. When the composition parts, made of steel or stainless steel, of the heat exchanger are assembled, welding films are disposed between the joint welding lines of the composition parts of the heat exchanger, the joint welding lines are then filled with low-melting-point welding materials, and the brazing without a welding flux is then performed.

In the prior art, hoisting mechanisms with the hook free falling function have two structures, wherein one structure is achieved by directly adding a sleeve outside a hoisting gear box and controlling the sleeve and a reel through a clutch, and the other structure is achieved by controlling high speed gear ring of the gear box through the clutch; non of the two structures has the wire rope anti-slip function, the wire rope is easy to detach and the rope is at mess; moreover, the conventional hoisting mechanisms have the designing problems of low work efficiency, high energy consumption, incomplete and loose structure, difficulty in manufacturing, high cost, and the like. According to the invention, a dry clutch is used to directly control the reel, so as to achieve the function of hook free falling; when the free falling hook is at work, non of a planet reduction gear, a wet multi-sheet brake, and a driving hydraulic motor is at work; the high-performance hook free falling hoisting mechanism is high in efficiency, low in energy consumption, and simple in structure, realizes wire rope anti-slip and protection function by controlling through a caliper disc brake; the high-performance hook free falling hoisting mechanism solves the congenital deficits of a conventional product in aspects of scheme, structure, and technology, and can excellently meet the requirement of a user in the particular aspect of energy conservation and emission reduction.

The invention relates to plane magnetic grinding machining assembly line and machining method for an inner surface of a elbow. The assembly line is characterized in that a feeding station, a machiningstation and a discharging station are connected through a plurality of conveying belts, and grinding material filling devices are arranged on the two sides of the side, close to the machining station, of a feeding conveying belt, and grinding material filling rotary magnetic discs are arranged at the bottom of part, below grinding material discharging ports at the bottoms of the grinding materialfilling devices, of the feeding conveying belt; and the machining station is provided with a plurality of magnetic grinding machines and two mechanical arms; the tail end of a discharging conveying belt is also provided with a stainless steel wire mesh conveying belt and an grinding material collecting conveying belt, the grinding material collecting conveying belt is arranged below the stainlesssteel wire mesh conveying belt, and a grinding material collecting rotary magnetic disc is arranged at the bottom of the grinding material collecting conveying belt. According to the assembly line and the method, grinding and polishing of the inner wall of the elbows with irregular cross sections, the inner wall of the elbows with variable diameters and the inner wall of the welded elbows is realized, the line production of magnetic grinding machining on the inner surface of the elbow is also realized, so that the batch machining of workpieces is facilitated, and the production efficiency isimproved.

The invention relates to a vertical demoulding method of a multidirectional die forging hydraulic press. Protruding portions of a left mould sleeve and a right mould sleeve and the inner side wall of a mould locking ring cooperate with each other and are wedge-shaped. By adopting the vertical demoulding method, a demoulding face can be reliably closed during forging, a mould closing force dose not needed to be taken into account when the hydraulic press works, the energy consumption can be greatly reduced, and a mould can be conveniently opened after forging. A mould locking device is simple in structure, easy to implement and low in manufacturing cost.

A die opening and closing device for a movable die plate 2 and a fixed die plate 1 includes a toggle link 5 disposed between the movable die plate 2 and a die tightening housing 8, a cross head 6 for flexing the toggle link 5, and a motor-driven ball screw 7 penetrating through the die tightening housing 8 and inserted into the cross head 6, and this die opening and closing device is provided with die thickness adjusting means 9 for adjusting the die thickness S when the die is tightened by extension of the toggle link 5, and ball screw rotation control means 20 for controlling constant the cracking gap, and a foamed resin molding machine is presented, together with its operating method.