38results about How to "Safe and reliable installation" patented technology

A bracket includes a fixing piece on a rotation element (3), said fixing piece comprising a body (22) in the general form of a ring, provided with an annular radial projection (23). The body includes an opening (33) which permits a variation in the diameter of said body (22) on assembly with engagement of the projection (23) in a corresponding groove (9) on the rotation element (3) to give a radial interference fit. A bar (28) prevents a variation in the diameter of the body (22) as above after the assembly thereof.

The invention belongs to the technical field of PCB (Printed Circuit Board) preparation and discloses a preparation method of a PCB and the PCB. The preparation method of the PCB includes the following steps: A, preparing a laminated plate which is provided with a through hole at a bottom of a step groove; B, performing copper deposition and electroplating on the laminated plate in sequence to implement metallization of a wall of the through hole; C, attaching an adhesive tape for covering the through hole in the step groove, and moulding a dry film for covering the through hole on a surface layer of the laminated plate; D, performing etching treatment on the laminated plate, and moulding the through hole into an electric transfer hole; and E, removing the adhesive tape and the dry film. The PCB is prepared with the preparation method of the PCB. According to the preparation method of the PCB and the PCB, a component can be installed in the non-metallic step groove on a sidewall safelyand reliably, so the occupation space of the PCB is effectively reduced; moreover, with the arrangement of the electric transfer hole in the step groove, a component mounted in the step groove by pressing can be directly connected to a one-layer or multi-layer circuit pattern on a specified copper layer at a lower side of the step groove, so the length of a transmission line is effectively shortened, the signal loss is reduced and the high-integrity transmission of a signal is implemented.

The invention belongs to changing and feeding joint devices of a fluid medium and specifically relates to a rapid changing and feeding joint mechanism of the fluid medium between two separation parts when gas and liquid fluid media are in a butt joint state. The rapid changing and feeding joint mechanism is characterized in that a plurality of joints combined by male and female joints are distributed in a butt connection surface between a part A and a part B, each joint combined by the male and female joints is a seal joint which is automatically and integrally formed by pushing each self-sealing male joint into each self-sealing female joint, each self-sealing male joint is composed of a male casing, a guide ring, a guide sleeve, a piston, a thread blocking sleeve, a spring A, a seal ring and a blocking ring, and each self-sealing female joint is composed of a female casing, a sleeve, an ejector rod, a spring B and a seal ring. The rapid changing and feeding joint mechanism has the advantages that the design is reasonable, the structure is compact, besides, the mechanism is self-sealing, free of leakage and convenient to manufacture and install, the operation is safe and reliable, and the like.

The invention provides a connecting assembly, a cable plug and a cable assembly. The connecting assembly comprises a shell and a plurality of plug wire assemblies. The shell is provided with an accommodating cavity and an avoiding hole communicated with the accommodating cavity; the plurality of plug wire assemblies are arranged in the accommodating cavity, the plug wire assemblies are used for fixing one end of a cable and are electrically connected with the cable, and at least part of the plug wire assemblies are exposed through the avoiding holes, so that the conductive columns of the female seat are inserted into the avoiding holes to be in contact with the plug wire assemblies and realize electric connection. According to the connecting assembly, the mounting and dismounting process of the female seat can be simple and safe, and female seats with different functional modules can be replaced conveniently.

A wiring terminal and a motor including the wiring terminal are provided. The wiring terminal includes: a mounting subassembly adapted to embed in a slot of an end insulator of a motor, a connection subassembly configured to support a wire stock having a lead wire, and a winding subassembly configure to receive an enameled wire wound on the winding subassembly. The connection subassembly and the winding subassembly are disposed on the top surface of the mounting subassembly. The lead wire of the wire stock is electrically connected to the enameled wire wound on the winding subassembly.

The invention provides a roundness detection device. A steel pipe is supported on a support. The roundness detection device is characterized in that: the roundness detection device comprises two fan-shaped clamping devices installed on the steel pipe; each clamping device is provided with a plurality of telescopic rods pointing to the circle center of the clamping device; a rotating device capable of being opened and closed is arranged between the two clamping devices; the rotating device is in sliding connection with the two clamping devices; a roundness meter capable of being adjusted up and down in the section circle center direction of the steel pipe is arranged on the rotating device; the telescopic rods are driven to stretch out and draw back at the same time, the circle centers of the clamping devices are made to coincide with the circle center of the steel pipe, the roundness meter is adjusted, the roundness meter is made to abut against the steel pipe, the rotating device isdriven to rotate relative to the clamping devices, and the roundness meter is made to measure the surface roundness of the steel pipe. Through the opening and closing of the detection device, waste of unnecessary working hours caused by dismounting and mounting of the device due to blocking of a roller or a supporting framework is avoided, the time of workers is saved, and assembly line detection can be achieved. The clamping devices drive the multiple telescopic rods to stretch out and draw back at the same time, and diameter roundness detection of different steel pipes can be achieved.

The invention discloses a leakage-proof ring. The leakage-proof ring comprises a funnel-shaped ring body, a first splicing ring is arranged at the top end of the ring body, and a second splicing ring is arranged at the bottom end of the ring body. According to the leakage-proof ring, the ring body is in a funnel shape and the splicing rings are arranged at the upper end and the lower end of the ring body, so the leakage-proof ring can be conveniently, safely and quickly installed and fixed to a concrete floor and a pipe, and the problem of high cost caused by other water leakage treatment methods is solved on the basis that the water leakage problem is effectively solved.

The invention relates to a front wheel suspension for a single-track vehicle, wherein a front wheel is rotatably supported on a fork-like wheel carrier and the wheel carrier is coupled to a frame and a steering bar of the vehicle connected to a handlebar, wherein the steering bar is coupled to the wheel carrier by means of a lever connection. Furthermore the wheel carrier is coupled to at least one frame bar by means of an articulated connection, and the articulated connection has a substantially vertical pivot axis. Moreover the steering bar is comprised of a fork bar partially encompassing the front wheel, which fork bar is coupled to the wheel carrier via the lever connection. Thereby a front wheel suspension having improved characteristics in regard to the suspension, the direct handling of the steering, and a reduction of the load of the frame can be provided.

The invention discloses a welding device for a gas meter connector. The welding device comprises a worktable, a welding table, a pneumatic device, two lower electrode stems, two lower electrode tips, a lower press table, an upper electrode stem and an upper electrode tip, a slide rail is arranged on the worktable, the welding table is fixed onto the slide rail and slides left and right via the pneumatic device, the lower electrode stems are fixed onto the welding table, the lower electrode tips are fixed onto heads of the lower electrode stems, the lower press table is positioned on the welding table, the upper electrode stem is perpendicularly fixed to the lower surface of the lower press table, and the upper electrode tip is fixed to the head of the upper electrode stem and corresponds to the lower electrode tips. A welding method for the gas meter connector includes steps of mounting an upper shell component; welding; changing positions and welding; and taking out a shell. The welding device and the welding method have the advantages that the structure is simple, the design is reasonable, the quality and the efficiency of a product are improved, and safety and reliability of a gas meter in terms of installation and utilization are guaranteed.

The invention discloses a road patrolling system. The system comprises a patrolling robot; a transmission traction belt which is longitudinally arranged along a road, wherein the patrolling robot is fixedly arranged on the transmission traction belt, the patrolling robot can move along a metal chain and performs data exchange with terminal control equipment through a communication optical cable; the terminal control equipment including a built-in electric winch and used for driving the transmission traction belt, thereby enabling the patrolling robot to longitudinally move along the road by following the traction belt. The system disclosed by the invention is especially suitable for a working condition of the road external field environment, the adverse conditions that a power-taking is inconvenient and the wireless communication coverage is unstable in the road external field harsh environment are avoided; the system has the features that the road lane space cannot be occupied, the system is suitable for long-distance and large-bandwidth data transmission, and the robot guarantees the safe and reliable of the mounting and movement through a mechanical structure. The whole system can partially or completely replace the patrolling working content of the patrolling personnel in the road administration management; the manpower resource is relieved, and the road management level isimproved.

A charging connection module for a vehicle has a charging socket for electrically contacting an external power source, and a pot unit which represents a mount for the charging socket and can be fastened to an outer panel of the vehicle.

The invention discloses an aluminum electrolysis short-circuit bus dismounting mechanism. The aluminum electrolysis short-circuit bus dismounting mechanism comprises a lifting car (1) which is of a rectangular frame structure, wherein a lifting frame (15) is arranged on the lifting car (1); a supporting platform (14) which is of a rectangular frame structure is supported on the top of the liftingframe (15); two hinged shafts (8) are fixedly arranged on the middle of the supporting platform (14) side by side; a square tube (9) is connected on each hinged shaft (8) in a hinged mode, and the square tube (9) can rotate around the hinged shaft (8); a telescopic pole (3) is arranged at the top end of each square tube (9), and a clamp (2) is arranged on the telescopic pole (3); and a mobile platform (6) is further arranged on the supporting platform (14), and a guide device (4) is arranged on the bottom of the mobile platform (6). The short-circuit bus dismounting mechanism disclosed by theinvention can quickly, efficiently, safely and reliably mount and dismount short-circuit busses, is very convenient to operate, and is worthy of being popularized.

The invention discloses an apparatus for fast lively replacing a feeder terminal. The apparatus comprises a connector socket, a connector plug and an installation tool; the connector socket is arranged on a switch body; the connector plug is arranged at the upper end of the feeder terminal; the connector plug includes a plug locking seat and a guiding shaft sleeve which sleeves the plug locking seat; the connector plug is connected with the connector socket through the plug locking seat; the plug locking seat is oppositely provided with installation cantilevers; the guiding shaft sleeve is oppositely provided with unlocking pull rods; and the installation tool includes an insulating operating rod and an installation protection basket connected with the upper end of the insulated operating rod, wherein the installation protection basket is provided with a straight rod for assembly and a bent rod for disassembly. The apparatus and method for fast lively replacing the feeder terminal of the invention are used for non-power-outage operation in the maintenance and upgrade of the feeder terminal of a distribution network, one person can replace the feeder terminal easily, and the non-power-outage maintenance of the distribution network can be realized.

The present application provides a limiting structure of a button and an electronic device, the electronic device includes a housing and an elastic member; a button hole is provided on the housing, and the first side of the housing is adjacent to the button hole A fixed block is fixed at the position of the fixed block, and a sliding space is provided in the fixed block with a clearance fit with the end of the elastic member or the fixed block and the housing cooperate to form a sliding space; the end of the elastic member It can slide in the sliding space, and the end of the elastic member is provided with a limiting portion that prevents the end of the elastic member from breaking out of the sliding space. The limiting structure is more convenient to install and safer and more reliable to use.