47results about How to "Conditions affecting service life" patented technology

The invention provides a grid-type light emitting diode (LED) display screen and a module thereof. The module comprises a bottom shell, a mask and an LED lamp, wherein the LED lamp is arranged on the bottom shell and exposed from the external surface of the mask; the bottom shell comprises a head part and a body; the head part is provided with a power cord and a signal wire interface; a plurality of elongate through holes are formed in the body, and the body is in grid type; through holes corresponding to each elongate through hole of the bottom shell are formed on the bottom shell and a lamp plate respectively; a ribbed plate is arranged on one side of the body opposite to the mask; and the ribbed plate corresponds to each grid part. The module is suitable for industrialization, is produced in large batch, light in weight, difficult to twist and deform, and excellent in permeability.

The invention discloses an assembling mechanism capable of facilitating mounting parts of an air cylinder. The assembling mechanism comprises a pair of lifting ropes and a lifting plate of which the lower surface is symmetrically provided with a pair of connecting blocks; one end of each lifting rope is connected with the other end of the lifting rope after passing through a through hole of each connecting block, and each of two ends of each through hole is provided with a plurality of pairs of limiting devices; and each limiting device comprises a fixed rope, a connecting cylinder and a limiting rope which are sequentially connected, and one end of the limiting rope is inserted into a center hole of the connecting cylinder and is connected with the fixed rope by a spring. When the lifting ropes are respectively sleeved at two ends of a rotor, all the fixed ropes, the limiting ropes and the springs are in a lifting state; when the rotor shakes, the lifting ropes are limited by limiting devices, and furthermore, the shake of the rotor is limited, so that the phenomenon that the service life of each lifting rope is affected by damage of the part, fixed on the lifting plate, of the lifting rope due to friction caused by shake when the rotor drives the lifting rope to shake is avoided, and the life safety and property safety of workers are protected.

The invention discloses a tent hack lever structure, which comprises vertical rods, a tent top bracket and a supporting mandril group, wherein each vertical rod is provided with a permanent seat and a sliding seat; the tent top bracket comprises four groups of connecting rod units, wherein the tails and the heads of the connecting units are mutually hinged and unfolded to form a square, and four groups of hinged points are formed; each group of connecting rod unit comprises two connecting rods, wherein the connecting rods are mutually hinged and unfolded to form an X shape; each group of hinged points respectively form an upper hinged point and a lower hinged point; the supporting mandril group comprises four groups of connecting rod units, wherein each group of connecting rod unit corresponds to one group of hinged points of the tent top bracket; each connecting rod unit of the supporting mandril group comprises two connecting rods which are mutually hinged and form an X shape after being unfolded; two connecting rods, which are connected with the tent top bracket, of each connecting rod unit are hinged to the upper hinged point and the lower hinged point of the tent top bracket; one connecting rod of the connecting rod unit connected with the vertical rods is hinged to a sliding rod, and the other connecting rod is hinged to the permanent seat.

The invention discloses a zigbee intelligent socket with a voice control function, which includes a mounting shell, a socket casing, a socket mounting slot, an electrical connection box, an electric control box and a control module, and the socket casing buckle is installed on In the installation shell, the plugboard installation groove is opened on the top surface of the socket casing, the bolts of the power connection box are installed inside the socket casing, and the electric control box and the control module are both bolted in the power connection box. In the present invention, the buckle protrusion embedded on the surface of the socket casing is convenient to cooperate with the buckle groove opened on the inner wall of the installation shell to fix the socket casing, and at the same time, it is convenient to disassemble and maintain the socket casing. The dismantling groove provided makes it convenient to use the dismounting groove to pry up the corners of the socket casing and take out the socket casing from the installation casing, thereby improving the convenience of dismounting the socket casing.

Provided in the present invention is a charging management method for a charging circuit. The charging circuit comprises a supply terminal and a charging terminal. A charging process of the charging circuit comprises a plurality of cycles, each cycle comprising one charging suspension stage and one charging operation stage. The charging management method comprises: S1. acquiring a voltage of the charging terminal at the charging suspension stage; S2. determining a charging scheme according to the voltage of the charging terminal, wherein the charging scheme comprises a trickle charging scheme, a constant-current charging scheme, a constant-voltage charging scheme, and a charging suspension scheme; and S3. performing the charging scheme at the charging operation stage. Also provided in the present invention is a charging circuit capable of implementing the charging management method described above. By providing a charging suspension stage to acquire a voltage of a charging terminal during the charging process, the present invention can accurately reflect the charging state of the charging terminal, so as to avoid selecting an inappropriate charging scheme due to an inaccurate voltage value which would affect the service life of a battery.

The invention discloses a dust removal device for electrical automation equipment. A second motor drives a rotating rod to rotate, and drives a supporting disk to move along the length direction of the screw rod, so that the conduit can move in the vertical direction so as to control the different electrical automation equipment. Dust blowing treatment is carried out in the area, which improves the efficiency of dust removal. At the same time, when the third cylinder is activated, the third cylinder pushes the third push rod to move, so that the conduit moves back and forth in the movable groove, so that several conduits shrink along the diameter of the support plate Or extended, and then can change the dust blowing range of several ducts, and then can flexibly change the working position of the ducts according to the different shapes of the electrical automation equipment, so that the ducts can completely remove dust from the electrical automation equipment, avoiding the long-term accumulation of a large amount of dust that is easy to cause heat dissipation The heat dissipation holes distributed on the board are blocked, which is not conducive to the timely heat dissipation of electrical components, which in turn makes it easy to overheat inside the electrical automation equipment and affect the service life of the equipment.

The invention discloses a heat dissipation device of a lamp, relates to the technical field of lamp use and heat dissipation, and aims to solve the problems that a light-emitting source generates a large amount of heat as time goes on when an existing lighting lamp is used, if the heat is not dissipated in time, the service life of the whole lighting lamp is shortened, and unnecessary economic losses are brought to users. A lampshade is arranged at one end of a lighting lamp, a lamp body is arranged on one side of the lampshade, a lamp slotted rear cover is arranged on one side of the lamp body, a plurality of heat dissipation slotted holes are formed in the outer wall of the lamp slotted rear cover, and an external exhaust fan is arranged on one side of the lamp slotted rear cover. A plurality of exhaust fan air outlet holes are formed in the outer wall of the external exhaust fan, and four exhaust fan fixing blocks are arranged on the outer wall of the external exhaust fan.