57results about How to "Avoid force imbalance" patented technology

The invention discloses a variable displacement oil pump capable of improving volume efficiency, and relates to the technical field of oil pumps. The variable displacement oil pump comprises a pump body, a pump cover, a sliding block and a spring, wherein the sliding block is fixedly connected with a spring pressing block, the two ends of the spring abut against the inner wall face of the pump body and the right side wall face of the spring pressing block correspondingly, a pin shaft is connected between the sliding block and the inner wall of the pump body, a left oil cavity is formed betweenthe outer wall of the sliding block on the left side of the pin shaft and the inner wall of the pump body, the left side of the left oil cavity is sealed, a right oil cavity is formed between the outer wall of the sliding block on the right side of the pin shaft and the inner wall of the pump body, the right side of the right oil cavity is sealed, an oil drainage groove used for communicating theleft oil cavity and the right oil cavity with a high-pressure area of a rotor cavity is formed in the end face of the sliding block, a feedback cavity is formed between the left side wall face of thespring pressing block and the inner wall of the pump body, and the feedback cavity and the left oil cavity are independent of each other. According to the variable displacement oil pump, high-pressure oil can be prevented from leaking into the feedback cavity through a gap to a great extent.

The invention discloses a vertical air conditioner and an air deflector sliding guiding and supporting mechanism. Air deflectors are slidably mounted on an air conditioner body through sliding mechanisms. The guiding and supporting mechanism is arranged between the corresponding air deflector and the air conditioner body. The guiding and supporting mechanism comprises an inner guide rail located on the air conditioner body and an outer guide rail located on the corresponding air deflector, the inner guide rail is provided with a supporting part for supporting the outer guide rail, and the supporting part makes sliding contact with the outer guide rail. The guiding and supporting mechanism is added between the corresponding air deflector of the vertical air conditioner and the air conditioner body on the basis of the sliding mechanisms. The sliding mechanisms are distributed at the two ends of the air deflectors and only play a role of driving. The guiding and supporting mechanism has the effects of guiding, supporting and load bearing between the air deflectors. Accordingly, the situation that stress unbalance of sliding mechanisms is caused by the action of gravity of air deflectors is avoided, and the phenomena that the air deflectors slide not smoothly, gets sluggish or even gets stuck in the moving process are avoided.

The invention relates to the technical field of intelligent control of pumping units, in particular to a full-intelligent vertical hydraulic pumping unit and a pumping unit control method. The full-intelligent vertical hydraulic pumping unit comprises a tower, a chain wheel, a reel, a hoisting sheave, a connecting rope, a connecting chain, a pumping rope, a polished rod eye, a rope slot ring, a first rope chain connecting part, a second rope chain connecting part, an intelligent control module and a driving device, wherein the driving device is arranged at the bottom of the tower, and the chain wheel is fixedly mounted at an output end of the driving device. The pumping unit control method comprises the following steps: the control module controls the rotating direction, the rotating speedand start and stop of a hydraulic motor; and the control module controls the flow of oil in a hydraulic station pumped into the hydraulic motor. The full-intelligent vertical hydraulic pumping unit is reasonable and compact in structure and skillful in concept. By matching the intelligent control module with the driving device, automatic stepless speed regulation, automatic setting of number of strokes and self diagnosis of operation of the pumping unit are achieved. By arranging the detachable and fixable rope slot ring, it is convenient to replace a rope slot which is worn. The full-intelligent vertical hydraulic pumping unit has the characteristics of being stable, efficient and intelligent.

The invention relates to the technical field of oil pumping unit intelligent control, in particular to an automatic stroke number setting vertical oil pumping unit and an automatic stroke setting control method of the oil pumping unit. The automatic stroke setting vertical oil pumping unit comprises a tower frame, a chain wheel, a winch wheel, a crown sheave, a connecting rope, a connecting chain,an oil pumping rope, a rope hanger, a first rope chain connecting piece, a second rope chain connecting piece, an intelligent control module and a driving device, wherein the bottom of the tower frame is provided with the driving device; and the output end of the driving device is fixedly provided with the chain wheel. The automatic stroke number setting control method comprises the steps that the control module controls the rotation direction, the rotation speed and start or stop of a hydraulic motor, and the control module controls the flow, pumped into the hydraulic motor, of a hydraulic station. According to the automatic stroke number setting vertical oil pumping unit and the automatic stroke number setting control method of the oil pumping unit, the structure is reasonable and compact, the conception is ingenious, automatic stroke number setting is achieved through the cooperation of the intelligent control module and the driving device, and the characteristics of stability, high efficiency and intelligence are achieved.

The invention provides a film coating process for manufacturing a packaging container. The film coating process comprises a winding mechanism, a coating mechanism, a guide mechanism, a drying mechanism, a conveying mechanism, a main beam plate frame, a guide roller I and a guide roller II. The film coating process solves the problems that clamping and fixing of an unwinding winding drum and a winding drum have limitation at present, and winding drums with different types and sizes cannot be clamped, so that the manufacturing of the film coating process is relatively single, and production and processing of film coating processes with different sizes cannot be realized; in the winding and unwinding processes, the execution actions cannot be synchronized, the tension in the film coating process is influenced to be constant, the film transmission stress is unbalanced, and the film is wrinkled or torn; no guide motion track exists for the transmission of paper printed matters and films, the deviation condition is easily caused after the films and the paper printed matters are compounded, and the film coating quality is influenced; and the coating of an adhesive on the surfaces of the films cannot be uniformly controlled, the coating flow speed of the adhesive cannot be controlled, and the film coating process is influenced.

The invention discloses a special machining tool base for a special type steel cylinder opening. The special machining tool base comprises a medium sliding plate, a small sliding plate, a square toolrest, a first servo motor and a second servo motor. The square tool rest is in a square shape, and four tool positions are arranged at the four corners. An additional tool base is further arranged onthe medium sliding plate, located at the transverse position of the square tool rest, and provided with one tool position. The four tool positions of the square tool rest sequentially include the first tool position, the second tool position, the fourth tool position and the fifth tool position, and the additional tool base is provided with the third tool position. A turning tool is installed at the first tool position, a turning tool is installed at the second tool position, a drilling tool is installed at the third tool position, a boring tool is installed at the fourth tool position, and aturning tool is installed at the fifth tool position. The tool base is specially used for machining a cylinder opening of a transverse handle type medium-small-volume steel cylinder, one device is provided with the five tools at the same time, and the steel cylinder machining requirement can be met through one-time workpiece clamping. The invention further discloses a method adopting the above special tool base to machine the special type steel cylinder opening.

The invention relates to the technical field of dies, and discloses an improved oblique shock wave die structure for a basin stand product. The improved oblique shock wave die structure comprises an upper die, a lower die and a sliding chute structure arranged between the upper die and the lower die, wherein the upper die comprises an upper padding plate, an upper fixing plate and a male die; the lower die comprises a female die, a limiting block, a lower padding plate and a female die padding plate; the sliding chute structure comprises a guide rail plate and a sliding block, an oblique sliding face is arranged on the guide rail plate and provided with a guide groove, a guide block matched with the guide groove is arranged on the sliding block, and the sliding block is further provided with a male die via hole matched with the male die; the upper fixing plate is installed at the lower end of the upper padding plate, the upper end of the sliding block corresponds to the lower end of the upper fixing plate, the guide rail plate is located at the upper end of the limiting block, the female die is installed on the lower padding plate through the female die padding plate, the limiting block is installed on the lower padding plate, the sliding block is further provided with an elastic recovery device, and the guide groove and the guide block are of a square structure. The improved oblique shock wave die structure has the advantages that machining is easy to carry out, stress is balanced in the working process, and the service life of the dies is prolonged.

The invention discloses a blocking mechanism for trolley type switch cabinet contact movable baffles, and aims at solving the problem of jamming in an action process of the contact movable baffles inthe prior art. The device comprises an upper movable baffle and a lower movable baffle arranged on a separation board, an electromagnetic lock arranged on a side wall, a controller arranged on the side wall, a trolley position sensor, a first motor, a second motor, a third motor, a fourth motor, a first travel sensor and a second travel sensor which are respectively connected with the controller,and a grounding shrapnel arranged on a baseboard and fitted to the trolley position sensor, wherein the electromagnetic lock is connected with the controller. According to the scheme above, the mechanism has the advantages of being simple in structure, flexible in action, safe and reliable; and the mechanism is of great practical value and promotional value in the technical field of safety protection.

The invention relates to the field of laptop manufacturing, in particular to an automatic milling machine. The automatic milling machine comprises a placement table for placing a shell, a milling cutter device for milling waste, and a control unit, and further comprises a suction cup device; the suction cup device comprises a suction cup, a mounting plate for mounting the suction cup, a power device controlled by the control unit, and a vacuum device providing the negative pressure for the suction cups; a through groove is formed in the mounting plate, and the suction cup is slidably matched with the mounting plate through the through groove; and the suction cup is connected with the output end of the power device, and the power device drives the suction cup to move in the through groove of the mounting plate. The problem that as for the suction cup device, due to a suction cup failure, stress of the shell is unbalanced during shell taking and placing can be avoided.

The invention discloses a motor reverser and voltage-sensitive resistor laser welding device and method, the laser welding method is suitable for the technical field of laser welding. The motor reverser and the voltage -sensitive resistor laser welding device comprise a laser preheating mechanism for heating the commutator terminal and a laser welding mechanism for jetting the welding ball to theterminal of the pre-heating commutator, and a controller for coordinating the working of the laser preheating mechanism and the laser welding mechanism. During use, the laser preheating mechanism is used for heating the terminals on the commutator with high heat conduction, and then injecting molten welding balls into the terminal and the voltage -sensitive resistor bonding pad, due to the fact that the terminal of the commutator is preheated, the temperature of the welding ball can be reduced, and the terminal can be soaked with the terminal, the voltage -sensitive resistor bonding pad cannotbe separated from the ceramic base, the welding process difficulty is lowered, meanwhile, due to the fact that the mass error of each ball is small, the welding spots are evenly distributed, so thatthe quality of each welding spot can be prevented from being unbalanced due to the fact that the quality of each welding spot is not uniform, and the service life is prolonged.