42 results about "Ram pressure" patented technology

Cooling system for motor vehicles with at least one radiator to which in a first operating phase, particularly in the ram pressure phase, a first air stream can be supplied via a first air flow path and which in an alternative or simultaneous second operating phase, particularly during fan operation, can be supplied by means of at least one air-conveying device, with a second air stream flowing along a second air flow path. Among other things, it is also provided that at least in some regions the two air flow paths are oriented at an angle to each other so that the air-conveying device is disposed outside or essentially outside the first air flow path. The invention also related to a corresponding method.

To provide an air intake system for a vehicle, so simple in structure as to reduce the cost and effective to increase the ram pressure, a front cowling (19) is mounted on a front portion of a vehicle body structure (1). This front cowling (19) has left and right headlight windows (20 and 21) aligned with left and right headlights (22 and 23), respectively, and also has an air intake opening (24) defined therein at a location above the headlight windows (20 and 21) for introducing an external combustion air (A) towards the vehicle engine (E). An intake air passage (35) is provided for introducing the combustion air (A), then entering the air intake opening (24), towards an air cleaner (30) by way of opposite lateral portions of a head tube (3).

The embodiment of the invention discloses a method for dynamically loading service boards and a dynamic loading system, relates to the communication field and solves the problems of storage capacity waste of a main control board and great RAM pressure, and influence on operating services caused by reloading service board software and FPGA files in communication equipment adopting a centralized control scheme. The method comprises the following steps: when detecting that the service board is on-line, acquiring service software and a programmable logic file of the service board from a storage chip of the service board; loading the programmable logic file for the service board; and running the service software of the service board to complete the configuration of the service board. The method for dynamically loading the service boards and the dynamic loading system can be applied to constructing a centralized control scheme of communication equipment.

A vehicle includes a duct structure configured to take in air from outside; an air cleaner including an air filter configured to clean the air guided to the air cleaner through the duct structure; a throttle device including a throttle valve for controlling a flow rate of the air guided to the throttle device through the air cleaner; and an engine including an intake port configured to suction the air guided to the engine through the throttle device; the duct structure including: a main inlet configured to take in air therethrough from outside by utilizing a ram pressure; a main passage extending from the main inlet to the air filter; a sub-inlet configured to take in air therethrough from outside; and a joint section located upstream of the air filter, the air flowing from the sub-inlet being joined to the air in the main passage, at the joint section.

The invention relates to a method for flanging a slant notch of a cylindrical shell, comprising the following steps: moulding and punching are carried out on 8 parts along the periphery of the cylindrical shell parts, 8 slant flanging notches are correspondingly arranged along the periphery of the cylindrical shell; first, sheet metal is produced into a sector and then rolled into a cone and then welded and corrected; afterwards, laser is adopted to cut the cone into kerves of the notches, the method of mould stamping is adopted to stamp all 8 notches in a stroke; a wedge block is adopted to transform vertical ram pressure of a punching machine into horizontal ram pressure which is exerted on 8 slotting parts, so that both internal mould and external mould can move; an active structure can be adopted to a female groove, when stamping is carried out, the outside female groove is first put in place, and then the inside male groove moves and is flanged.The invention has the advantages that high-accuracy part stamping is realized by using an ordinary pressure machine.The mechanism features good implementation effect, satisfies high-accuracy engine part processing requirements and enjoys good TOP.In addition, the processing efficiency is high; when specialized equipment is not used, the method of the invention is a reliable and economical method for processing similar parts.

The invention discloses an automatic side grinding device, which comprises a first base, a first linear module, a moving seat, a rotary positioning mechanism, a door frame, a downward pressure oil cylinder, a pressure head, a grinding mechanism, a rotary feeding mechanism, and a combined pallet , first place the combined pallet on the upper end of the two adjacent rail frames, place the casting on the combined pallet, when the rotary feeding mechanism rotates to a set angle, the first linear module drives the moving seat to drive the rotary positioning mechanism to move To the right below the combined pallet, lift the oil cylinder back, so that the combined pallet completely falls on the upper end of the rotary positioning mechanism, the first linear module drives the moving seat to reset, the positioning mechanism works to fix the combined pallet, and the downward pressure cylinder pushes the pressure head Press the casting down for grinding. The structure of the device is simple, and it only needs to place the castings on the combination pallet for automatic continuous feeding, and a rotating positioning mechanism is designed to rotate the castings 90°, so as to automatically polish the four sides of the castings, effectively improving production efficiency.

A method of mixing a rubber composition includes a carbon introduction step and a uniform dispersion step. In the carbon introduction step, on the basis of a deviation between a rate of temperature increase of the rubber mixture (R) and a target value, at least one of a ram pressure (Pr) and a rotational speed (N) of the mixing rotor (2) is PID controlled so that the ultimate temperature of the rubber mixture (R) at the conclusion of the step is within a tolerance range. In the uniform dispersion step, the ram pressure (Pr) or the rotational speed (N) of the mixing rotor (2) is adjusted to reduce a deviation between a value based on successively detected data associated with a predetermined control target and a target value.

The invention discloses a novel horizontal pressure casting machine. A ramming component, a front base plate, a moving base plate, a rear base plate and two nozzle fitting pressure cylinders are mounted on a rack. The ramming component comprises a melting pot, a melting pot sleeve, a pressure cylinder supporting frame and a ramming pressure cylinder. A die locking component is mounted between the rear base plate and the moving base plate and comprises a die locking pressure cylinder and a die locking arm. An ejection pressure cylinder is arranged at the center of the left surface of the moving base plate. Extension end portions of piston rods of the two nozzle fitting pressure cylinders are connected with the front base plate. Each of the ramming pressure cylinder, the die locking pressure cylinder, the ejection pressure cylinder and the nozzle fitting pressure cylinders is of a gas-liquid pressure cylinder structure, in other words, an oil cylinder and a pressurizer are integrally combined and pure gas is used as a power source. During working, each action part is driven through the corresponding gas-liquid pressure cylinder, accordingly only a gas source needs to be adopted as power, and energy-saving and environment-friendly effect is better. Therefore, the novel horizontal pressure casting machine has the advantages of simple structure, energy saving and environment friendliness, and benefit of improving working environment.

A servo drive system of a press machine has a pair of servo motors which can generate necessary ram pressure by compositing and using a torque based on the same speed-torque characteristics. The servo motors are symmetric with each other in a mirror image manner. The servo motors are opposed to each other at opposite ends of an operation shaft which vertically moves a ram. The servo motors are integrally operated, thereby directly driving the operation shaft.

A servo drive system of a press machine has a pair of servo motors 30a and 30b which can generate necessary ram pressure by compositing and using a torque based on the same speed-torque characteristics. The servo motors 30a and 30b are symmetric with each other in a mirror image manner. The servo motors 30a and 30b are opposed to each other at opposite ends of an operation shaft 20 which vertically moves a ram 22. The servo motors 30a and 30b are integrally operated, thereby directly driving the operation shaft 20.

The invention discloses a push rod rolling bottom type bottom press, which comprises a knurling outer mold, a knurling wheel, a lifting mechanism, a rotating mechanism, a rolling bottom outer mold base, a slider base, a push rod, and a rolling bottom outer mold base. On the outside of the slider seat, a knurled outer mold is arranged on the outer mold seat of the rolling bottom, an inner slider is arranged on the slider seat, a spring is arranged between the inner slider and the side wall of the slider seat, and the upper side of the inner slider There is a knurling wheel and a thimble wheel on the lower side. The knurling wheel corresponds to the position of the knurling outer mold. A belt pulley is arranged, and the belt pulley is connected with the rotating mechanism by a belt. The push rod rolling bottom presser of the present invention overcomes the deficiency that the existing planetary bottom presser can only be used for sealing the bottom of a cylindrical paper container, and can be used for rolling the square paper with a square inner cavity of the outer mold. Seal the bottom of the container.

The invention provides an air jet engine using a piston engine as an air compressor and application thereof. The air jet engine is characterized in that: by the motion of a piston in the piston engine, air entering an air cylinder is directly or indirectly compressed, and the compressed air and fuel are mixed and combusted in a combustion chamber and then jetted out from a jet pipe so as to generate a required propelling power. The piston engine and a ram jet are combined to form a ram pressure/piston jet engine. The gas jet pipes are arranged in all directions of an aircraft, so that the aircraft can obtain the abilities of vertical takeoff and landing, hovering and flexible turning. The gas is tangentially jetted by nozzles at the tail ends of aerovanes of the aircraft, so that the aerovanes can obtain higher rotary power and speed.

The invention discloses a press riveting process for a motor bracket of an automobile glass lifter, which comprises the following steps: (1) setting the motor bracket on a positioning structure of a tooling platform; (2) driving a stamping cylinder by a lifting cylinder arranged above the tooling platform And the pressure head on the stamping cylinder moves downward until it moves down until the end of the pressure head contacts the outer edge of the riveting hole of the motor bracket; (3) The automatic rivet feeder sends the rivets to the pressure head through the rivet feeding port on the pressure head. (4) The stamping cylinder drives the stamping rod in the stamping head to press the rivets in the stamping head; (5) After the pressing is completed, the lifting cylinder drives the stamping cylinder to reset, and removes the processed motor bracket. Automatic rivet feeding and automatic rivet pressing are realized through the lifting cylinder and punching cylinder, without manual control operation, and the riveting and pressing are completed automatically, which greatly improves production efficiency, avoids the safety risk of manually placing rivets, and reduces costs.

This high-rise building is directly connected to the heating self-pressurization unit, which is composed of a water injector 1, a check valve 2 and a piping system; there is a water suction pipe section 3 in front of the check valve 2, which can be connected with the water supply pipe of the municipal heating pipe network, and the water supply pipe can be stopped. The water outlet pipe section 4 behind the return valve 2 can be connected with the water suction pipe of the high-rise building directly connected to the heating unit through the water ejector 1; it is characterized in that: the water inlet pipe section 5 of the water ejector 1 can be connected with the main return pipe of the heating system in the high area, The outlet pipe section 6 can be connected with the water suction pipe of the direct-connected heating unit of the high-rise building, and the water injector 1 ejects the heating water supply in the low area of ​​the pipe section 4, so as to improve the dynamic pressure head of the direct-connected heating unit of the high-rise building to absorb water, and reduce the power consumption of the high-rise heating unit. At the same time, the hot water required for heating conditions is prepared. It has the following advantages. It can be debugged and operated only by connecting the relevant pipelines. It is safe and reliable, easy to maintain, low in cost, easy to popularize, and saves electric energy. It brings great convenience for high-rise buildings and buildings with large terrain height difference to use urban external network heating, and provides reliable and energy-saving equipment for heating systems to prepare hot water under different working conditions.

The invention relates to an eight-bar servo press with a triangular pendulum. The press includes a frame, a first crank, a second crank, a first connecting rod, a second connecting rod, a triangular pendulum, and a hammer connection. Rod and hammer, the first crank and the second crank are respectively connected with the frame through the rotating pair; the first crank is connected with the servo motor, and the servo motor drives the first crank to rotate; the first connecting rod and the first crank are rotated The pair is connected, the second connecting rod is connected with the second crank through the rotating pair, the first connecting rod, the second connecting rod and the triangular pendulum are connected at the same point through the revolving joint; It is connected with the hammer connecting rod, and the end of the hammer connecting rod is connected with the hammer through a rotating pair, and the hammer is in the fixed guide rail. The present invention can obtain diversified pressure working curves of the punching hammer, which solves the problems of poor "flexibility" and low quality of stamping forming of the traditional mechanical press; the addition of the triangular pendulum can make the working pressure curve of the punching hammer more diversified; At the same time, the press has good force transmission characteristics.