30results about How to "Make sure to open" patented technology

The invention belongs to the technical field of electrified railway contact net construction, and particularly relates to a construction method for erecting an electrified railway uplink and downlinkcrossover contact net. The construction method for erecting the electrified railway uplink and downlink crossover contact net is good in construction effect. The construction method includes the following steps that 1), an anchoring section is divided into two parts from the position of an uplink and downlink crossover section insulator, the distances between the center of the section insulator and an adjacent main track and between the center of the section insulator and the center of a crossover line are equal, and the center of the section insulator is a decomposition point; the anchoring section from the decomposition point to a hard anchor is L1, and the prefabrication length is Lx; anchoring section prefabrication is carried out according to the prefabrication length Lx of the anchoring section; the anchoring section from the decomposition point to a full compensation lower anchor end is L2, and the total length of the anchoring section is L; 2), anchor hauling is carried out, the anchoring section L1 and the anchoring section L2 are synchronously erected, a first insulator is connected, anchor falling is carried out, suspension adjusting is carried out, and power is supplied; and 3), the first insulator is replaced with the section insulator through a following skylight.

The present invention discloses a control device of the exit which is used for the passenger carrying luggage at the places such as airport and the like, the control device comprises a bar code reading unit (8) which functions when the identification label (9) of the hand luggage (4) and the label receipt (10) held by the passenger are read, and at the same time the forward movement of the luggage (4) placed on the conveying belt (5) to the safety detecting arched door (4) and the turnstile or obstacle (7) for the passing of the passenger are actuated. When the two bar codes are compared to same the instruction conveying belt (5) is moved forwards by a step by providing one-digit additional safety code, and at the same time the unit instruction is read to allow the passing of the passenger. The bar code reading unit (8) can continuously read for the requested times when the bar code is checked, and also the subsequent a plurality of steps are moved forwards according to the number of the portable luggage (4). The passenger inserts the labels (9) and (10) into the reading device (8) and when one or several luggage of the control device are received one in the two sides is conveyed immediately.

The invention discloses a reciprocating plywood production device, and belongs to the field of plywood processing. The reciprocating plywood production device comprises a machine frame, a top wall isarranged in the middle of the upper end of the machine frame, a base is arranged at the lower end of the machine frame and below the top wall, a lower hot pressing plate is arranged at the upper end of the base, and an upper hot pressing plate is arranged on the upper part of the lower hot pressing plate. The upper hot pressing plate ascends and descends in a reciprocating mode under the action ofa hot pressing driving device, sliding grooves with the two communicating ends are formed in the upper end face of the lower hot pressing plate at intervals, connecting parts are movably arranged inthe sliding grooves, plate blank containing frames are oppositely arranged at the two ends of the connecting parts, the plate blank containing frames include movably arranged object carrying plates, and the object carrying plates on the two sides are arranged oppositely. The plate blank containing frames are connected with sliding parts through connecting plates, the sliding parts are arranged atthe upper end of the machine frame and slide in a reciprocating mode in the length direction of the sliding grooves, and the sliding parts is provided with discharging driving devices for pushing theobject carrying plates to turn over downwards. According to the reciprocating plywood production device, and rough boards can be conveniently taken out of hot pressing equipment.

The present invention relates to a vacuum pump (1), wherein the inlet connection member (2) of the vacuum pump is connected with a unit generating a negative pressure through a connection pipe line, between the vacuum pump (1) and the unit there is provided a non-return valve, and the vacuum pump (1) is provided with a monitoring unit. In order to prevent the vacuum pump from being overheated with no need for continuous operation, the lower portion of the non-return valve is provided with a hole (5), and the hole (5) is enclosed when used for meltable materials (6, 8) fused at a pre-defined melt temperature and for sublimable materials (6, 8) sublimated at a pre-defined sublimating temperature. The originally-enclosed hole (5) is opened through the melted or sublimated meltable or sublimable materials, thereby being convenient for the vacuum pump (1) to inhale fresh air for cooling.

The application relates to a prosthesis of the anterior spinal column, which consists of a perforated sleeve body provided with at least one anchoring element, teeth and overgrowth holes and a positioner (2) situated within the body (1). The body has got in its wall at least one through manipulative hole (6) and at least one through positioning hole (7) cooperating with it, whose longitudinal axes are parallel with each other, whereas the positioner is provided with at least one situating element (8) cooperating with at least one positioning hole of the body and at least one hole (12), where the length of the manipulative hole of the body corresponds to the distance between extreme locations of the positioner's hole situated within the inside diameter of the manipulative hole. At least one end face (3) of the body or / and body's wall are provided with at least one pair of opposite guidelines (14). For introducing the prosthesis into the intervertebral space a guiding instrument is used in the form of a rod ended from one side with a holder and from the other side with a shaped working element. The application relates also to the method of implantation of the prosthesis with the use of the prosthesis guiding instrument.

The invention discloses a manipulator suitable for bird egg grabbing. The manipulator comprises a guide rod; an airbag is coaxially mounted on the guide rod; the upper side of the airbag is connected with an airbag base; the lower side of the airbag makes contact with a slide block; a pressure spring is coaxially mounted with the guide rod, and is positioned below the slide block; a pull rod frame and a grabbing jaw frame are mounted on the guide rod; the pressure spring is positioned between the pull rod frame and the grabbing jaw frame; a pull rod is movably mounted between the pull rod frame and the grabbing jaw frame; a clamping jaw is movably mounted on the grabbing jaw frame; and an egg support is arranged at the tail end of the clamping jaw. In the manipulator suitable for bird egg grabbing, after bird eggs are grabbed by the clamping jaw, the bird eggs are synchronously absorbed by negative pressure, so that the flexible grabbing of the bird eggs is realized, the grabbing reliability is improved, and the positioning precision is reduced; and the manipulator suitable for bird egg grabbing is matched with a roaming egg picking robot to finish the egg picking work to realize automatic egg collection.

The invention discloses a folding duck catching shed structure, and belongs to the technical field of poultry catching tools. The folding duck catching shed structure comprises a base assembly, rock cover assemblies and a hinge assembly. The base assembly is formed by a head side base bend, a base middle supporting pipe and a foot side base bend. The base middle supporting pipe and the foot side base bend are fixedly hinged to the two ends of the head side base bend and the extending parts of the two ends of the head side base bend through the hinge assembly. The rock cover assemblies are symmetrically arranged on the base assembly, and are two structures opened and closed oppositely, and the rock cover assemblies are mainly composed of rock cover upper pipes, pull rod locating casing pipes, rock cover lower pipes, headrest pipes and rock cover hinge components. The rock cover upper pipes and the rock cover lower pipes are fixedly hinged to the headrest pipes and the foot side base bend respectively. The two ends of the headrest pipes are fixedly hinged to the head side base bend. The folding duck catching shed structure has the advantages of being reasonable in structural design and simple in manufacturing process, and saving time and labor in mounting and dismounting, and is small in size, light, convenient to carry, economical and practical.

The back-purging device for the measurement gas pipeline provided by the present invention mainly adopts a normally open solenoid valve whose diameter of the butt inlet of the measurement gas is larger than the diameter of the butt outlet of the measurement gas, and a large-diameter design of the purging gas inlet pipeline and the purging gas The normally closed solenoid valve with small diameter design of the outlet pipeline, and at the same time cleverly use the purge gas pressure (1MPa and below) far greater than the measurement gas pressure (8KPa and below); no matter in the normal measurement state, the purge gas inlet pipeline is The strong pressure action of the middle purge gas realizes the reliable isolation and sealing of the measurement gas in the measurement gas pipeline by the normally closed solenoid valve, or the strong pressure action of the purge gas entering the measurement gas inlet pipeline in the purge measurement state. The open solenoid valve reliably isolates and seals the measurement gas in the measurement gas outlet pipeline, and can also ensure that the normally closed solenoid valve opens instantaneously, which ensures the safe and reliable gas measurement work of the device in the normal measurement state and the purge measurement state.

The invention discloses a pore diameter correction safety protection device of a straightening and cutting machine. The device comprises a machine body (1), an infrared measuring module (2), a reference adjusting module (3), an information induction module (4) and a management module (5) are arranged on the machine body (1); during running, the infrared measuring module (2) is arranged on the straightening pore diameter, and measures the material related length, the reference adjusting module (3) adjusts the length of the pore diameter, the information induction module (4) is arranged on a starting component, the management module (5) processes comprehensive information, a numerical value display module (6) is arranged on the reference adjusting module (3), and displays the material measured length and the pore diameter needed length in real time, a protection hinting module (7) is arranged on the information induction module (4), and when inducing machine body run and a protection cover is not opened, the protection hinting module (7) hints opening; a prompt module (8) is arranged on the management module (5); according to the material length, the pore diameter reasonable length is corrected, it is ensured that during running, the protection cover is opened, and work is smooth.

The electrically driven vacuum pump (1) is connected with an aggregate at an inlet port (2) through a connecting line. A negative pressure is generated in the aggregate, where a check valve is arranged between the vacuum pump and the aggregate. A control and monitoring unit is arranged, where an opening is formed downstream of the check valve. The opening is enclosed by a refractory material (6) which melts at a predetermined melting temperature. The refractory material is made of a plastic material, particularly synthetic resin.

The invention discloses repair technology of a tubular PERC solar cell. The repair technology is set after annealing of a silicon wafer and before film coating of a back face of the silicon wafer. The repair technology comprises the following steps: (1) a semi-finished silicon wafer which stays over 4 hours after the annealing and before the film coating is placed into a repair furnace, nitrogen having a flow rate of 5-10slm is introduced into the repair furnace to achieve self-cleaning, and inlet time of the nitrogen is 1-5min; (2) nitrogen having a flow rate of 5-20slm is introduced to blow and sweep dust on the silicon wafer; (3) temperature of the repair furnace is raised from room temperature to 500-650 DEG C, and nitrogen having a flow rate of 1-5slm is introduced at the same time; and (4) the temperature of the repair furnace is kept at 500-650 DEG C for 5-30min, and nitrogen having a flow rate of 5-20slm is introduced at the same time. Correspondingly, the invention further discloses a preparation technology of the tubular PERC solar cell. Through adoption of the repair technology and the preparation technology, the problem of efficiency reduction brought by too long semi-finished product stay time is solved, and the EL yield rate is improved.

The invention discloses a downhole pumping method. A pumping ring is arranged on the outer surface of a pumping tool or a bridge plug. During the pumping process, the flow rate of the well fluid reaches a first preset value V 1 , the well fluid enters the annular groove, and at the edge of the annular groove, the pressure inside the annular groove is greater than the pressure outside the annular groove, so that the pumping ring The opening is expanded outward; at this time, due to the outward expansion of the pumping ring, the outer diameter of the setting tool is temporarily increased, that is, the pushing area of ​​the bridge plug is increased, so that the drilling fluid can push the setting more effectively Tools and connected bridge plugs. Speeds up the pumping process and saves time.

The invention discloses a reciprocating plywood production device, which belongs to the field of plywood processing. There is a lower hot-pressing plate, and an upper hot-pressing plate is arranged above the lower hot-pressing plate, and the upper hot-pressing plate reciprocates and lifts under the action of the hot-pressing driving device, and the end surface of the lower hot-pressing plate is provided with a chute through which both ends are spaced apart. There is a connecting part movable in the groove, and the two ends of the connecting part are oppositely provided with a slab placing frame. The plate is connected with the sliding part, which is arranged on the upper end of the frame and slides reciprocally along the length direction of the chute, and the sliding part is provided with a discharge driving device for pushing the loading plate to turn down. The purpose of the present invention is to provide a reciprocating plywood production device, which can conveniently take out the rough board from the hot pressing equipment.

The invention discloses a tubular PERC single-sided solar cell, which comprises a back silver main grid, an all-aluminum back electric field, a back composite film, a P-type silicon, an N-type emitter, a front passivation film and a front silver electrode; The film includes one or more of aluminum oxide film, silicon dioxide film, silicon oxynitride film and silicon nitride film, and is deposited on the back of the silicon wafer by using tubular PECVD equipment. There are four gas pipelines for silane, ammonia, trimethylaluminum, and laughing gas. The device for loading and unloading silicon wafers of the tubular PECVD equipment is a graphite boat, and the depth of the stuck groove of the graphite boat is 0.5-1mm. The invention also discloses a preparation method and special equipment for a tubular PERC single-sided solar cell. By adopting the invention, the photoelectric conversion efficiency is high, the appearance yield rate and EL yield rate are high, and the problems of scratches and winding plating are solved.

The invention discloses a plywood pressing device, which belongs to the field of plywood processing. Under the action of reciprocating lifting, the upper part of the lower heat press plate is provided with a horizontally sliding slab placement frame, and the slab placement frame includes beams arranged horizontally at intervals and a connecting plate arranged between the two beams. The upper surface of the pressure plate is provided with a chute matching the crossbeam; the side end of the crossbeam is hinged with a loading plate that can be reset to a horizontal state, and the loading plates on both sides are arranged opposite to each other; the upper end of the base is provided with a frame, and the The frame is provided with an unloading driving device that pushes the loading plate to turn down. The purpose of the present invention is to provide a plywood pressing equipment, which can conveniently take out the raw board from the hot pressing equipment.