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 relates to a spindle-type drilling machine with angular hole drilling function. According to the technical proposal provided in the invention, a rotary bearing is provided on the chassis, a drilling tower bracket is provided on the rotary bearing, a drilling tower is hinged on the drilling tower bracket, a drilling machine body and the output rotary main shaft thereof are provided on the drilling tower, and an angle adjusting mechanism for adjusting the angle of the drilling tower is disposed between the drilling tower bracket and drilling tower. A rotary bearing is arranged between the drilling tower and chassis, so that the drilling tower can conveniently realize the conversion between transporting state and working state, the drilling hole angle of the drilling device can be randomly and continuously adjusted in the range of 0-90 DEG, the application range of the spindle-type drilling machine is increased, and the spindle-type drilling machine can also realize the functions of full-hydraulic power drilling machine. The invention can fully utilize the existing large amount of spindle-type drilling machine; and has the advantages of good economical performance, low production cost, saving a large amount of investment cost, quicker arrangement and relocation of equipment, good safety and reliable performance.

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 discloses a vehicle positioning monitoring system comprising a GPS terminal, a ground monitoring system, and a communication base station. The GPS terminal comprises a body and a cover which can be detached. The front of the body is equipped with a touch display. The inside of the body is equipped with a processor module, a GPS positioning module, a communication flow module, a power module, a temperature sensing module, an oil passage control module, a circuit control module and an alarm module. A locking device and a fingerprint identification device connected with each other are arranged outside the body. A rotatable connecting ring is arranged outside the cover. The connecting ring and the locking device match each other. The GPS terminal can monitor the location information, speed, trajectory of a vehicle, the current external temperature of the vehicle and other data through the communication base station and send the data to the ground monitoring system, and users can visually check the current location of the vehicle by logging into the ground monitoring system.

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.

The invention discloses a single-double-stage complementary-type one-support-multiple wind energy heat pump air conditioner which is characterized by being composed of two stages of heat pumps including a front-stage ultralow-temperature heat pump and a rear-stage ultrahigh-temperature heat pump, and the single-stage individual operation of the front-stage ultralow-temperature heat pump or the double-stage simultaneous operation of the front-stage ultralow-temperature heat pump and the rear-stage ultrahigh-temperature heat pump is realized by front-rear-stage coupled heat exchangers and single-double-stage complementary conversion devices for the two stages of the heat pumps; and a single-double-stage complementary-type ultralow-temperature one-support-multiple wind energy air conditioning system implements single-stage refrigerating operation in summer at the temperature lower than 35 DEG C and single-stage heating warming operation in winter at the temperature of 5 DEG C above, as well as the double-stage efficient refrigerating operation in summer at the temperature higher than 35 DEG C under a hot environment and the double-stage heating operation in winter at the temperature lower than minus 5 DEG C under the cold environment, is simple and concise, is energy-saving and environment-friendly, and operates reliably and safely..

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 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.

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 relates to a heat accumulation type hot box electric heater, comprising a hot box, radiating fins disposed at the periphery of the hot box, a heat accumulation case disposed under the hot box, an electrical control case and a power source controller disposed at one side of the hot box; heat transfer fluid is charged in the bottom of the hot box, a heat conduction pipe is disposed at the bottom center of the hot box, and a vacuum liquid charging pipe and a hot box temperature sensor are disposed at one side of the hot box. A thermal insulation layer in which heat accumulation material is provided is disposed in the heat accumulation case. The bottom of the hot box in which the heat conduction pipe is disposed is embedded in the heat accumulation case, two electric heating pipes are inserted in the heat conduction pipe and controlled by two different temperature controllers respectively. The inventive electric heater is provided with a simple structure, small electrical power, excellent heat transferring, energy saving and discharge decreasing benefits, a long service life, convenient maintenance, safety and reliability of use.

The invention discloses a letter box convenient to maintain. The letter box comprises a box body, an installing housing fixedly installed in the box body and an LED illumination lamp abutting into the installing housing, wherein multiple partition plates are fixedly installed in the box body in a vertically parallel mode, letter box bodies are arranged among the partition plates, an empty bin I and an empty bin II located on the right side of the empty bin I and communicated with the empty bin I are formed in the installing housing, an insertion hole communicated with the empty bin II is formed in the side end face of the installing housing, and a sliding plate is arranged in the empty bin I in a left-right horizontal movement mode. The letter box convenient to maintain is simple in whole structure, low in manufacturing cost and safe and reliable in power supply, mounting and dismounting operations are simple and convenient, electric shock accidents are effectively decreased, the life safety of people is guaranteed, normal usage of the LED illumination lamp is ensured, and the letter box convenient to maintain is suitable for popularization and promotion.

The invention relates to the technical field of a production stoppage-free temperature measuring method for an oil pipeline, in particular to a pressed punching production stoppage-free temperature measuring method for a pipeline, comprising the following steps of: welding a sleeve installation seat on the pipeline and installing a valve at the upper part of the sleeve installation seat; then installing a puncher connecting shell on the valve, opening a valve and punching a temperature measuring hole on the pipeline by using a punching cutter; closing the valve, dismounting the puncher connecting shell, taking the punching cutter down and installing a thermometer sleeve on a punching shaft; then installing the puncher connecting shell on the valve, opening the valve to install the thermometer sleeve on the sleeve installation seat; and finally taking off the valve and the puncher connecting shell and installing a thermometer or a thermocouple in the thermometer sleeve to measure temperature. The invention has convenient use; by using the method, the temperature measuring hole can be punched on the pipeline under the condition of no production stoppage so that the purpose of rapidly, safely and reliably installing the thermometer sleeve without stopping production is achieved, and therefore, the invention greatly lowers production cost and simultaneously reduces the installation difficulty of a temperature measuring device.

The invention belongs to a split type high silicon-iron alloy acid-proof axial flow pump, which comprises a shaft (12), wherein the right end of the shaft (12) is fixedly provided with a transmission wheel (16). The pump is characterized in that the shaft (12) is arranged between a front bearing (11) and a back bearing (14), the left end of the front bearing (11) is provided with a front bearing cover (20), the left end of the bearing (12) is provided with a sealing shaft sleeve (8), the left side of the sealing shaft sleeve (8) is provided with a protecting sleeve (7), the left side of the protecting sleeve (7) is provided with an impeller (6), the left side of the impeller (6) is connected with the left end of the shaft (12) through threads by an impeller nut (5), the outer side of the impeller (6) is provided with a lengthening section (1), the outer side of the lengthening section (1) is provided with a lengthening sleeve (2), the lengthening sleeve (2) is connected with a pump jacket (3) through a bolt (21), the pump jacket (3) is arranged on a pump body (4), and the right end of the pump jacket (3) is connected with a bearing box body (13) through the bolt (21). The pump has the advantages that the temperature-resistant and acid corrosion-resistant properties are high, and the solid corrosion-resistant property is high; the use and installation of outer lining steel jacket are safe and reliable, the fault rate is low, and the service life is long.

The invention relates to a mounting and transporting tool for a guide bearing bush of a vertical hydraulic generator, comprising a generator main shaft, an upper stand cover plate, a horizontal transporting device and a rotary lifting and carrying device. The horizontal transporting device and the rotary lifting and carrying device are mutually independent; the horizontal transporting device comprises a horizontal transporting runner and a bearing bush tackle; the rotary lifting and carrying device comprises a rotary support, an axial pulley, a radial pulley, a chain block and a chain sliding locker; the axial pulley is arranged at the bottom of the rotary support, the radial pulley is arranged at the middle part of the rotary support, the chain block is arranged at the upper part of the rotary support, and the rotary support is connected with the chain sliding locker by a loop; and during operation, the horizontal transporting runner is fixedly arranged on an upper stand cover plate, the bearing bush pulley block is connected with the horizontal transporting runner in a rolling manner, the bearing bush is arranged on the bearing bush pulley block, and the chain sliding lock is connected with the outer wall of the main shaft of a generator in a surrounding manner. The horizontal transporting runner and the bearing bush tackle realize horizontal transportation of a bearing bush, and the bearing bush can be transported around the circumference of the main shaft by utilizing the rotary lifting and carrying device. The mounting and transporting tool for the guide bearing bush of the vertical hydraulic generator, disclosed by the invention, can improve the mounting efficiency and ensures the safety of mounting operation.

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.

The present invention provides a discharge lamp protecting cover and lamp lighting device, the discharge lamp protecting cover prevents an error in fitting a luminescent lamp and forgetting removal of a protective cover. The surface of the luminescent lamp is protected by the protective cover (10) so as to reduce a damage that is caused even when the luminescent lamp containing an enclosed high-pressure gas bursts during transportation. The protective cover (10) is provided with an IC chip (6), which retains information on the luminescent lamp. The information is read out of the IC chip (6) when the protective cover (10) is fitted to the lighting device, this prevents an error in fitting the luminescent lamp. As removing the protective cover (10) breaks the IC chip (6), it makes impossible to read the information out of the IC chip (6). Thus, removal of the protective cover (10) is detected to prevent forgetting removal of the protective cover (10).