54results about How to "Reduce bore" patented technology

The invention relates to a differential type pneumatic angle pedestal valve, relating to a pneumatic angle pedestal valve. The valve comprises a valve body, a piston, a plastic cylinder, a return spring, an indicator, an actuating cylinder, a transparent observation window, a piston rod and a valve seat. The valve is mainly technically characterized in that a differential moveable cylinder and a differential fixed piston are arranged in the valve seat, wherein one end of the differential moveable cylinder is connected with the differential fixed piston, and the other end thereof is connected with the diversion head of the valve seat; and a balance hole B is arranged on the differential moveable cylinder and is communicated with a balance hole A of the diversion head. By adopting the differential type angle pedestal valve, the invention increases the flexibility and the pressuretightness of the valve; and the invention also greatly reduces the cylinder diameter of the actuating cylinder, the consumption of compressed air is reduced, for example, the cylinder diameter of a Phi 65 valve actuating head is only Phi50, and the pressure of controlled media is higher.

The invention relates to a petrol engine with turbo charging, which comprises a cylinder body, a cylinder sleeve, an intake valve, a spark plug hole, an exhaust valve, a combustion chamber, a crankshaft, a connecting rod, a piston, an intake manifold, an exhaust manifold and a turbo charging device. The petrol engine also comprises a twin cam shaft valve timing adjusting structure arranged above a cylinder head; the twin cam shaft valve timing adjusting structure ensures that an admission cam shaft and an exhaust cam shaft is in transmission connection with the crankshaft through a timing chain; and the twin cam shaft valve timing adjusting structure is used for continuously and changeably adjusting the opening times of the intake valve and the exhaust valve of the combustion chamber, therefore, the fuel utilization and the rotation speed and the output power of the engine can be improved. The turbo charging device can increase the intake pressure of the engine, and quicken the combustion of the fuel of the engine, so as to enable the combustion to be more sufficient, therefore, the output power of the engine is improved, and the exhaust emissions are reduced. A three-way catalysis device is arranged on the exhaust manifold, therefore, the harmful gas emissions can be reduced.

The invention relates to a linear motion guide rail engine; a piston is fixed by a linear motion guide rail device and makes reciprocating linear motion on the basis of reserving the whole structural form of the original engine, the structure of the piston is improved, the height of a cylinder is reduced, and the stroke of the piston is increased, so that the output power of the engine is improved, and the power performance, the economic performance and the emission performance of the engine can be improved; and therefore, the linear motion guide rail engine which is low in consumption and high in power can be provided for the technical field of the engine.

The invention discloses a stacking manipulator capable of expanding, opening and closing employing a connecting rod mechanism. The stacking manipulator comprises a palm for clamping turnover boxes through a cylinder-driven force amplifier, and fingers which are carried by guide rods of a double-guide rod thin cylinder and are stretched into a horizontal state by a thick connecting rod to liftthe turnover boxes. The manipulator has the function of horizontally or vertically clamping a corrugated case and the plastic turnover boxes, and is capable of horizontally or vertically lifting the plastic turnover boxes in a non-clamping manner by virtue of long handles at two sides; and especially the stacking manipulator does not need an action space at the outer side of one box body during verticalliftingin a stretching manner and four side surfaces of the box body can be kept seamlessly clung to other box bodies. The stacking manipulator has the advantages of being high in space utilization rate, high in security and low in energy consumption, and belongs to the field of transport package, logistics transportation requirement and robots.

The invention relates to a multifunctional rolling type steam box production line. The production line comprises a square box frame without a bottom, a heat source and a plurality of molds which are used for containing foods and can be mutually stacked, wherein each mold is a square framework, an air exchange opening is formed in the top of the square box frame, and the bottom of the square box frame is fixed to a rail of the production line. The production line is characterized in that the square box frame is divided into a lifting side and a releasing side which are symmetrical, a pile of molds are arrayed in the lifting side, a pile of molds are arrayed in the releasing side, a lifting mechanism is arranged on the lifting side, a releasing mechanism is arranged on the releasing side, a flat pushing mechanism is arranged at the top of the square box frame, each mold on the rail of the production line is conveyed to the top of the lifting side by the lifting mechanism in a stepping mode, then conveyed to the top of the releasing side from the top of the lifting side by the flat pushing mechanism and finally conveyed to the rail of the production line in a stepping mode by the releasing mechanism, and the stepping interval is the height of one mold. Uncooked foods enter from the lifting side of the multifunctional rolling type steam box production line, cooked foods go out from the releasing side, and full-automatic production is achieved.

Disclosed is the use of serous tissue, such as pericardium, as a component of intracorporeal implants. Particularly, disclosed is a jacketed stent assembly comprising an expandable stent provided with a jacket of processed serous tissue which, in some embodiments, is impregnated with a therapeutic or diagnostic agent. In a preferred embodiment, the jacket of the expandable stent is formed of pericardial tissue, preferably bovine or porcine pericardial tissue.

The invention relates to a compact buffering cylinder which comprises a cylinder body and a piston rod. The compact buffering cylinder is characterized in that the middle part of the inner wall of the cylinder wall is provided with a raised isolating ring, the isolating ring, the piston rod and the upper part of the cylinder body match one another to form an upper oil cylinder structure, the isolating ring, the piston rod and the lower part of the cylinder body match one another to form a lower oil cylinder structure, a diversion channel is drilled on the piston rod, and the upper port and the lower port of the diversion channel are communicated with the upper cavity of the upper oil cylinder structure and the lower cavity of the lower oil cylinder structure respectively. During buffering, the upper cavity and the lower cavity are both filled with hydraulic oil and matched with all valve groups of a hydraulic system to bear impact and finish buffering, thus the buffering force carrying area of the buffering cylinder is increased, the diameter is decreased, and the volume and the manufacturing cost are reduced. In addition, because the buffering cylinder is small in volume, the buffering cylinder can be arranged on multiple points to achieve multi-point buffering with good effect.

The invention discloses a hydraulic high-speed lifting device for a stereo garage. The lifting device comprises a linear speed increasing mechanism, a driving metal flexible piece retraction jack, a driven metal flexible piece retraction jack, a driving metal flexible piece and a driven metal flexible piece. The driven metal flexible piece retraction jack, the linear speed increasing mechanism and the driving metal flexible piece retraction jack are fixed to a supporting frame in sequence and are connected in a gear engagement mode. One end of the driving metal flexible piece and one end of the driven metal flexible piece are correspondingly and fixedly connected with the driving metal flexible piece retraction jack and the driven metal flexible piece retraction jack respectively, and correspondingly wind the driving metal flexible piece retraction jack and the driven metal flexible piece retraction jack respectively, the other end of the driving metal flexible piece is fixedly connected with the telescopic end of a hydraulic cylinder, and the other end of the driven metal flexible piece is guided by a guide wheel and then is connected with an object which needs to be lifted. The invention further discloses the stereo garage.

The invention relates to a reset time and withdrawal force testing device of a cigarette lighter. The reset time and withdrawal force testing device comprises a detection box, wherein a withdrawal force test unit and a reset time test unit are arranged on the detection box; the withdrawal force test unit comprises a detection frame arranged at the upper end of a detection table; a drive cylinder, a force sensor and a first clamping jaw which are orderly connected are arranged on the detection rack; a second clamping jaw is correspondingly arranged at the upper surface of the detection box; two ends of the cigarette lighter are respectively clamped by the first clamping jaw and the second clamping jaw; the force sensor is electrically connected with a control unit; a drive cylinder drives the first clamping jaw and pulls the cigarette lighter and is induced by the force sensor; the pressure of an air source of the drive cylinder is 0-0.6MPa; the diameter is 100-160mm; a cylinder barrel of the drive cylinder and an end cover are made of aluminum alloy. The reset time and withdrawal force testing device of the cigarette lighter, disclosed by the invention, is wide in detection range, high in detection efficiency, and portable in equipment, and an energy source is saved.

The invention discloses a pile frame jacking device of a pile driving barge, and a related pile frame jacking and lying method. The pile frame jacking device comprises a slideway arranged on a pile frame; one end of the slideway is arranged at the joint of a rear side rod and a lower side rod of the pile frame, and the other end of the slideway is arranged at the position close to a pile driving surface of the pile frame; one end, close to the pile driving surface of the pile frame, of the slideway is higher than the other end of the slideway when the pile frame is erected; a movable block isarranged in the slideway; a main oil cylinder is hinged to a barge body; the end part of a piston rod of the main oil cylinder is hinged to the movable block; an upper fixing point for fixing the movable block is arranged at one end, positioned at the pile driving surface, of the slideway; a lower fixing point for fixing the movable block is arranged at the other end of the slideway; when the movable block on the pile frame is fixed to the lower fixing point, the piston rod of the main oil cylinder stretches out to enable the pile frame to be in an upright state; two auxiliary pushing oil cylinders for assisting in pushing the pile frame at the front half section of the pile frame erecting process and then are separated from the pile frame are hinged to the barge body in parallel; and theincluded angle between the pile frame and a vertical plane is less than 45 degrees when piston rods of the auxiliary pushing oil cylinders extend out completely.

The invention relates to a reducing piled force-expanding type oil cylinder opening-closing device. In the invention, a short-stroke large-cylinder-diameter flat oil cylinder is connected between a piston rod and a cross arm of a power oil cylinder, wherein the piston rod of the flat oil cylinder is connected with the piston rod of the power oil cylinder, and a close hole end cover of the flat oil cylinder is connected with the cross arm. The using method comprises the following steps of: filling hydraulic oil into an inlet-outlet oil hole of a piston cavity of the flat oil cylinder to ensure that oil enters the piston cavity and the piston rod is in a fixed state; acting on the close hole end cover of the flat oil cylinder by the piston cavity after the oil enters the piston cavity to ensure that the close hole end cover pushes the cross arm and a pull rod pulls a metal die core, wherein because the sectional area of the piston cavity of the flat oil cylinder is an odd number times that of the piston cavity of the power oil cylinder, under the action of several times of pulling force, the metal die core and an outer die of a metal die form a die opening and core pulling distance space; and then filling oil into the piston cavity of the power oil cylinder to finish the overall die opening and core pulling action of the metal mold. The invention is applied to a metal die core pulling and demoulding casting process, reduces the shut-down waste caused by the braking of the metal die core, saves the resources and improves the working efficiency.

The invention discloses a powerful chuck mechanism which comprises a machine frame, a cylinder, two forming clamping jaws and a transmission part. The two forming clamping jaws are symmetrically and movably arranged on the top of the machine frame. According to the powerful chuck mechanism, the forming clamping jaws on the two sides are driven by the cylinder to synchronously act, the two formingclamping jaws get close to each other or away from each other through the transmission part, the cylinder diameter of the cylinder is reduced, the size is small, the installing space is saved, the centralized clamping is ensured, the output force of the cylinder is increased by 2-2.5 times, the abrasion to the clamping claws is reduced, the service life is long, and maintenance is easy. Meanwhile,by adding a displacement sensor and a pressure sensor, it is ensured that each force and displacement value can be monitored, and the stable product quality is ensured.

The invention discloses a bottom-groove single-cylinder flexible lifting mechanism of an automobile body alignment machine. A center of a front cambered surface of a long circular groove hole of a first hinged support (2) is higher than that of a rear cambered surface of the long circular groove hole of the first hinged support (2); the center of the rear cambered surface of the long circular groove hole of the first hinged support (2) and a center of a circular hole of a second hinged support (8) are equal in height; and a distance between the center of the rear cambered surface of the long circular groove hole of the first hinged support (2) and the center of the circular hole of the second hinged support (8) is equal to that between centers of a front upper rotating shaft and a rear upper rotating shaft. The underfloor long circular groove hole is adopted, so that a leveling problem is solved; an overhead oil cylinder is arranged between a platform and a front supporting arm, so that a lifting moment is raised, and a cylinder diameter parameter is optimized; a ratchet protection device is improved; and a structure corresponding to the ratchet protection device is simplified.

The invention discloses a projection welding upper electrode structure capable of sequentially welding multiple nuts in a time sharing manner. The projection welding upper electrode structure comprises a bottom plate and at least three electrode assemblies arranged on the bottom plate. The bottom plate is connected with adjustable installing plates. The two perpendicular side faces of the adjustable installing plates are connected with positioning blocks. Each electrode assembly comprises the corresponding adjustable installing plate, an air cylinder installing plate, a welding air cylinder, an air cylinder electrode transition plate, an electrode connecting base, an electrode body, a water nozzle and an electrode head. A conductive belt adapter plate is connected to the rear side face ofthe bottom plate and connected with conductive belts, and conductive belt connection copper plates are connected with the electrode connecting bases of the electrode assemblies. Providing the projection welding upper electrode structure capable of sequentially welding the multiple nuts in the time sharing manner is the purpose, a plurality of electrodes can be used for sequentially welding a workpiece according to the set sequence after one-time workpiece installation, the requirements for the welding air cylinder diameter and the transformer volume are lowered, and the equipment manufacturingand using cost is reduced.