30results about How to "Little impact on altitude" patented technology

The invention relates to a method and device for controlling the liquid level of a photosensitive resin and coating a resin layer for photocuring rapid prototyping. The computer-controlled micropump injects the resin in the auxiliary tank into the scraper with a cavity through a flexible pipe, and simultaneously completes the control of the liquid level of the resin and the coating of the resin layer on the surface of the workpiece through the horizontal movement of the scraper on the liquid surface of the main tank. The present invention can not only overcome the disadvantages that the ordinary blade-type scraping method is easy to damage the workpiece and the coating is uneven, but also can overcome the negative pressure adsorption scraper that is easy to lose negative pressure and reduce the uniformity and layer thickness accuracy of the resin coating. shortcoming. At the same time, since the uncured resin coating layer is formed on the surface of the workpiece, it only needs to move the bracket down by a distance of a solidified layer thickness, so it has little influence on the fluctuation of the resin liquid level in the main tank and does not require a long wait. Leveling time thus improving work efficiency.

A telescopic lifting beam used for a coal mine monorail locomotive belongs to the technical field of coal mine machinery and solves the technical problems of transporting and placing stacked supports. The device includes a load-bearing beam, a load-carrying trolley and a telescopic arm. The direction of the upper chute and the lower chute are set respectively, and the upper chute and the lower chute are set as one-sided openings. The opening ends of the upper chute and the lower chute are in opposite directions. The end of the free end of the telescopic arm is provided with an overturn cylinder along the horizontal direction, and the overturn cylinder drives the overturn mechanism to rotate around the hinge position; Retract; the top support cylinder drives the top support mechanism to rotate around the root. The present invention adopts a unique hoisting method inside the frame of the stacked bracket, fully utilizes the stretching stroke of the stacked bracket itself, and can adapt to the harsh working environment under the mine.

The invention provides a method for forming a memory, including providing a substrate; forming a floating gate material layer on the substrate; patterning the floating gate material layer and the substrate, forming a floating gate on the substrate and a floating an opening in the substrate between the gates; forming an isolation material layer inside the opening; performing a first chemical mechanical polishing on the top of the floating gate and the top of the isolation material layer to planarize the upper surface of the floating gate; removing The isolation material layer between the floating gates, the isolation material layer in the substrate forms an isolation structure; an insulating layer is formed on the side wall, upper surface and surface of the isolation structure of the floating gate. Due to the high flatness of the upper surface of the floating gate, the thickness of the insulating layer formed on the upper surface of the floating gate is uniform, so that the local electric field strength near the insulating layer is close to that of other regions, which can improve the ability of the floating gate to hold charges.

The invention discloses a valve mechanism for an engine and a vehicle with the same. The valve mechanism comprises a vale gear, a rocker arm assembly, a first roller, a second roller, a cam shaft, a connecting arm and a phase adjusting mechanism. The bottom of the rocker arm assembly is provided with a driving type face which is directly in contact with the top of a valve to drive the valve of the valve gear to move. The first roller and the second roller can both be arranged on the rocker arm assembly in a pivoted mode. The cam shaft comprises an inner shaft and an outer shaft which are coaxially arranged, the inner shaft and the outer shaft are provided with an inner shaft cam and an outer shaft cam which can rotate along with corresponding shafts respectively, the outer shaft cam abuts against the first roller, and the inner shaft cam abuts against the second roller. The connecting arm is placed on the two sides of the rocker arm assembly respectively, the first end of the connecting arm is connected with the rocker arm assembly in a pivoted mode, and the second end of the connecting arm is arranged on an engine body set of the engine in a pivoted mode. The phase adjusting mechanism is used for adjusting the relative phase of the inner shaft and the outer shaft. The valve mechanism for the engine can achieve secondary opening of the valve, meanwhile, the duration time of opening of the valve can further be prolonged, the structure is simple and compact, and the influence on the height of the engine is small.

The invention relates to a disc-type TVS tube high-efficiency electrostatic protection assembly for a bridge-wire type electric detonator, which comprises a disc-shaped PCB circuit board and two TVS tube electrostatic protection electronic devices. One of the TVS tubes is connected in parallel with the pin-pin firing circuit through the circuit board, and the other TVS tube is connected in parallel with the pin-shell firing circuit through the circuit board. Two zigzag discharge electrodes are arranged on the reverse side of the PCB circuit board, and form the air gap electrostatic discharge channel between the feet and the shell with the inner wall of the metal tube shell. . The electrostatic protection component of the present invention can protect both the foot-shell and the foot-foot to achieve an anti-static effect of more than 50kV on the human body, and can withstand multiple impacts of electrostatic discharge without any performance change.

The invention discloses a rail transit vehicle, which comprises a car body and a traction transformer. The traction transformer is fixed on the top of the car body, and the outer contour of the traction transformer is located in the contour line of the roof protruding away from the bottom surface of the car body. The traction transformer Installed on the top of the car body, and at the same time ensure that the outer contour of the traction transformer is within the contour line of the roof, it is not only beneficial to a certain extent to prevent the traction transformer from being damaged by pollution, blockage and scratches, so as to improve the use by reducing the failure rate service life, to improve the reliability of rail transit vehicles; and it is beneficial to reduce the height of the bottom surface of the vehicle body from the ground, avoiding the addition of a higher platform, and weakening the influence of the height of the platform, which is conducive to improving its adaptability. Therefore, the rail transit vehicle provided by the present invention is conducive to improving its working reliability and adaptability.

The invention relates to a high-effect electrostatic protective component of a disk type voltage dependent resistor for a bridge-wire electric detonator. The high-effect electrostatic protective component comprises a disk type PCB and two voltage dependent resistor electrostatic protective electronic devices, wherein one voltage dependent resistor is connected with a pin-pin ignition loop in parallel via a circuit board, and the other voltage dependent resistor is connected with a pin-shell ignition loop in parallel via a circuit board; two sawtooth-shaped discharge electrodes are configured at the reverse side of the PCB, and form a pin-shell air gap electrostatic discharge channel together with the inner wall of a metal tube shell; the sawtooth-shaped discharge electrodes and the electrostatic protective devices are connected in parallel to form a double-insurance effect with pin-shell electrostatic protection. The pin-shell protection effect of the electrostatic protective component achieves the human body static electricity resistance above 50kV; the pin-pin protection effect achieves the human body static electricity resistance above 30kV, and can withstand multiple times of impact by electrostatic discharge without any capability change.

The invention discloses a glue dipping head for conductive glue coating. The glue dipping head comprises a connecting shaft, a rotating body, a glue dipping head base, glue dipping salient points and glue dipping shrinkage salient points, wherein the rotating body is fixedly arranged on the connecting shaft; the glue dipping head base is arranged at the bottom of the connecting shaft; the glue dipping salient points and the glue dipping shrinkage salient points are arranged on the glue dipping head base in matrix arrangement; and the glue dipping shrinkage salient points are positioned on the outermost side of the glue dipping head base. The glue dipping head has the advantages that the space layout of the glue dipping salient points is optimized, and the size and structure of the glue dipping salient points of a bonding pad of a chip are optimally designed, so that the ideal condition that effective overflow of the conductive glue on non-bonding pad parts of the chip and proper overflow of the conductive glue on the bonding pad parts of the chip is achieved; and according to the glue dipping head, the production efficiency and the quality of the conductive glue coating are improved, the viscosity change of the conductive glue and the height of the conductive glue in a glue dipping disc are less affected, and the glue dipping head is beneficial to large-scale production.

The invention discloses a valve mechanism for an engine and a vehicle comprising the valve mechanism. The valve mechanism comprises a valve mechanism body, a rocker component, a first roller, a second roller, a camshaft, supporting structures, a phase adjusting mechanism, and a third roller or limit pins. The bottom of the rocker component is provided with a drive molded surface which is suitable for directly driving a valve to move. The first roller and the second roller both can be arranged on the rocker component in a pivoting mode. The camshaft comprises an inner shaft and an outer shaft, the inner shaft and the outer shaft are coaxially arranged and provided with an inner shaft cam and an outer shaft cam respectively, and the inner shaft cam and the outer shaft cam can rotate along the corresponding shafts respectively. The outer shaft cam abuts against the first roller, the inner shaft cam abuts against the second roller, the supporting structures are arranged on the two sides of the rocker component and provided with circular arc cambers or sliding grooves, the third roller can be attached to the circular arc cambers in a rolling mode, and the limit pins can be matched in the sliding grooves in a sliding mode. The valve mechanism can achieve secondary opening of the valve, can lengthen the opening lasting time of the valve, and is simple in structure, and low in influence on the height of the engine.

The invention discloses a gas distribution mechanism for an engine and a vehicle with the same. The gas distribution mechanism includes: a valve train; a rocker arm assembly with a drive profile adapted to drive the movement of the valve at the bottom; first and second rollers that are pivotally arranged on the rocker arm assembly; including a coaxial arrangement The camshafts of the inner shaft and the outer shaft have an inner shaft cam and an outer shaft cam that rotates with the corresponding shaft respectively, the outer shaft cam abuts against the first roller, and the inner shaft cam abuts against the second roller ; The support structure arranged on both sides of the rocker arm assembly; the phase adjustment mechanism; the gas distribution mechanism also includes a third roller or a limit pin, and the support structure is also configured with an arc surface or a sliding groove, and the third roller can roll Closely attached to the arc surface, the limit pin is slidably fitted in the slide groove. The valve mechanism of the present invention can realize the secondary opening of the valve, and at the same time can prolong the opening duration of the valve, has a simple and compact structure, and has little influence on the height of the engine.