142results about How to "Prevent offline" patented technology

A carbon/carbon slide block of current collector for electric locomotive is prepared through providing prefabricated body made of punched non-weft fabric with tridirectional structure, depositing pyrolytic carbon by CVD, compacting by resin dipping-charring process several times, and machining.

The invention discloses a status switching method of a user terminal, comprising the steps as follows: detecting a triggering instruction for locking the interface of an application program when the user terminal is in a first state in which the application program operates, wherein the user terminal in the first state is allowed to carry out the operation of a user to the interface of the application program; and switching the user terminal from the first state to a second state according to the triggering instruction, wherein the user terminal in the second state is forbidden to interrupt the automatic locking of the application program and execute the operation of the user to the interface of the application program. The status switching method of the user terminal, which is provided by the invention, can be used for switching the state of the user terminal according to different usage scenarios so as to avoid wrong operation when the game keeps online and simultaneously solve the problem that the hang-up of the game is interrupted because of the automatic locking of the user terminal with excellent user experience.

The invention discloses a method for realizing backup of a dynamic host configuration protocol (DHCP) server, which comprises that: a user host acquires an IP address from a main DHCP SERVER through a DHCP RELAY; the user host requests for reletting and does not receive a response of the main DHCP SERVER, the DHCP RELAY initiates an IP address request to a standby DHCP SERVER; and the DHCP RELAY applies for and acquires the IP address, and sends a compulsory reletting message to the user host. The invention also correspondingly discloses a system for realizing the backup of the DHCP server; and when the main DHCP SERVER is not available, the online user host does not need experiencing processes of releasing the IP address and applying for the IP address once again and can realize the switching of the DHCP SERVER; therefore, the method and the system can avoid off line of users due to the fault of the DHCP SERVER, improve the satisfaction of the users, and relieve the pressure of network equipment due to on line again of the users together.

A safety collar and tendon assembly (24) for joining a female connector (22) and a male connector (20), comprising a collar member (26) having at least one tab (30, 32) with a radially inwardly projecting leg (35) which extends into an annular recess (39) between the male connection (20) and the female connection (22) to prevent axial movement of the collar member (26) along the connection assembly (16) and thereby maintain engagement of collar (26) around a non-circular (hexagonal) surface (47) of the female connector (22). Also part of the safety collar and tendon assembly (24) is a tendon or length of wire (40) which is secured at one end to collar (26) and at its other end is either secured to a similar collar on an adjacent threaded connection or to a fixed structure. Unthreading of the connection assembly (16) is prevented by the tendon (40), which prevents rotation of collar (26).

The invention discloses a general combined type stringing pulley. The pulley comprises a main hanging board, a bottom board, two side columns and a principal axis, wherein primary and secondary hooks are arranged at the top of the main hanging board; conductor wheels penetrate through the principal axis; the side column at one side is movably connected with the main hanging board via a primary connection board and a secondary connection board; the main hanging board and the bottom board are connected with other connection parts of the side columns with bolts; the principal axis is movably arranged on the two side columns and is fastened by nuts; a row of blocking wheel carrier connecting holes with space equal to the width of the conductor wheels are arranged at the lower end of the main hanging board; blocking wheels corresponding to the upper edges of the conductor wheels are pairwise arranged at the two sides of the conductor wheels respectively; the blocking wheels are fixed belowthe main hanging board with fixed bolts via blocking wheel carriers; and supporting seats with anchor holes are arranged at the two ends of the bottom board. The pulley can be used for stringing various transmission lines and various quantities of split conductors. Stringing of all split quantities of transmission lines can be satisfied as long as the construction unit only manufactures a pulley and then increases the quantity of the conductor wheels according to the quantity of the split conductors.

The invention provides a textile-based enhanced degradable tube cavity support and a preparation method and application thereof. The textile-based enhanced degradable tube cavity support is characterized by comprising a hollow tubular fabric formed by two-dimensionally and three-directionally knitting degradable macromolecular silk yarns as knitting silk yarns, wherein axial silk yarns are introduced between two groups of knitting silk yarns in the knitting process and are not knitted, the axial silk yarns are molten through a heat treatment process, weaving points of the two groups of degradable macromolecular silk yarns are bonded and fixed through the molten axial silk yarns, and accordingly the textile-based enhanced degradable tube cavity support stable in shape is obtained. The shortcoming that the edge knitted by a machine is easy to loosen and a structure is not easy to fix can be effectively overcome, slippage of the weaving points of the support can be effectively prevented, the number of the weaving points per unit length when the support is radially compressed is increased, and the radial supporting force of the support is increased.

The invention relates to online roller replacing and overhauling technology of a fan-shaped segment of a continuous casting machine and belongs to the technical field of metallurgy continuous casting technology. The online roller replacing and overhauling technology of the fan-shaped segment of the continuous casting machine is characterized in that the whole fan-shaped segment is sequentially sectioned into 16 sections (from the first section to the sixteenth section). Outer arc rollers of sections from the first section till the seventh section and inner and outer arc rollers of sections from the eighth section to the sixteenth section respectively undergo online replacing and overhauling. The online roller replacing and overhauling technology of the fan-shaped segment of the continuous casting machine has the advantages that a single roller undergoes online replacing and overhauling, the phenomenon that a complete fan-shaped segment is off line due to failure in reaching a period is avoided, labor intensity is reduced, overhauling staff is reduced, maintenance cost is saved and overhauling time and warm shutdown time are reduced.

The invention discloses a multi-needle-bar sewing machine. The sewing machine comprises a machine head shell and a sewing control system and is provided with an installing support fixed to the machine head shell, a positioning support, at least one switching air cylinder set fixed to the machine head shell, and a thread pulling air cylinder arranged on the machine head shell, the installing support is horizontally provided with a multi-needle-bar module composed of at least two needle bars in a sliding mode, the positioning support horizontally slides along with the multi-needle-bar module and is provided with at least two thread clamping parts used for clamping upper threads, at least two drivers capable of being independently matched with the corresponding thread clamping parts to clamp the threads are arranged on the positioning support, the switching air cylinder set is composed of at least one air cylinder, drives the multi-needle-bar module and the positioning support to horizontally slide together and makes any needle bar in the multi-needle-bar module, the corresponding thread clamping part and the corresponding driver move to the working position, and the driver in the working position can fix a thread residue to the corresponding thread clamping part after a thread is hooked by the thread pulling air cylinder.

The invention belongs to the field of ferrous metallurgy steelmaking, and particularly relates to an anti-blocking device for a blow hole of a dip tube of a RH furnace and a method for removing steel slag from the blow hole. By arranging an oxygen branch pipeline and a flow meter on a blow pipeline, when the blow hole in an ascending tube of the dip tube becomes smaller or is completely blocked, oxygen gas is introduced when a vacuum tank is not treated, and oxygen gas and the steel slag in the blow hole of the ascending tube of the dip pipe are subjected to oxidation reaction, so that the blocked steel slat at the blow hole of the ascending tube of the dip tube is melted, and the steel slag or molten steel is blown out of the blow hole by virtue of oxygen gas at a certain flow speed. The cleaning process is safe and efficient, is more efficient than additional reactants, is short in treatment time and lower in cost, and particularly can be used for effectively removing steel slag which is deeply blocked in the blow hole. The anti-blocking device can effectively reduce a condition that flow of the blow hole is reduced or the blow hole is completely blocked, so that the circulation effect in the service life of the dip tube is ensured, and the dip tube is prevented from being off line due to blockage.

The invention relates to the field of clothing, in particular to a clothing seamless splicing structure and a clothing seamless splicing method. The clothing seamless splicing structure comprises two fabrics to be spliced, the front side of the splicing position of one fabric and the reverse side of the splicing position of the other fabric are overlapped and sewn, and overlock is arranged at the splicing positions of the two fabrics. The splicing principle is that firstly, overlapping is performed in the mode that the front side is tightly attached to the reverse side, so that a protruding overlapping portion formed when the front side is tightly attached to front side is avoided, and therefore the overlapping positions of the two fabrics are made to be smoother; secondly the splicing positions are overlocked and sewn simultaneously so that the two fabrics are connected together, and meanwhile the problem that the edges of the fabrics loose threads is avoided. Therefore, the clothing seamless splicing structure is shaped like a plane, the structure is smoother, and the clothing with the seamless splicing structure is not prone to rubbing skin while being worn next to the skin, is more comfortable to wear, and has the advantages of being firm and not prone to loosing the threads.

The invention provides a method for processing communication failures in a master-slave system and the master-slave system. The master-slave system comprises master device and slave device. The method comprises the following steps: detecting, by the master device, whether each slave device is online, so as to obtain state information of each slave device; sending the state information to each slave device by the master device; and determining, by each slave device, whether each slave equipment is started to be operated according to the received state information. According to the technical scheme, the slave device in the master-slave system can take the detection result of the master device as basis to determine whether the slave device is started to be operated, so that when the sending of the slave device is invalid, the slave device cannot be automatically started to be operated and then the normal work of the master-slave system can be ensured.

The invention discloses a method for backing up a dynamic host configuration protocol server (DHCP SERVER), which comprises that: a user host acquires an IP address from the DHCP SERVER through a dynamic host configuration protocol delay (DHCP DELAY); when the user host requests for reletting and does not receive a reletting response of the DHCP SERVER, the DHCP DELAY responds to the reletting request of a user and records related reletting information; and when the DHCP SERVER is available, the DHCP DELAY sends the reletting information to the DHCP SERVER for synchronization. The invention also correspondingly discloses a system for backing up the DHCP SERVER. The user host does not need waiting to apply for the IP address again until the DHCP SERVER is available, and can continue using the previous IP address, so the method and the system can avoid off line of users due to the fault of the DHCP SERVER, improve the satisfaction of the users, and relieve the pressure of network equipment due to on line again of the users together.

The invention discloses an anti-explosion secure combined type cable adapting device comprising an adapter body which is composed of an upper fixing block and a lower fixing block, wherein an installation through hole is firmed at the middle part of the upper fixing block and the lower fixing block, a conductive baffle plate is arranged at the middle part of the installation through hole, side fixing plates are arranged on two sides of the adapter body, threaded joints are arranged on the outer sides of the side fixing plates, fixing sleeve covers are arranged in the peripheries of the threaded joints, a sliding installation groove is arranged at the upper middle part of the upper fixing block in a perpendicularly penetrating manner, a limiting block is arranged in the sliding installationgroove, a conductive block is arranged on the limiting block, an installation cover plate is arranged on the upper fixing block, a threaded rod is arranged at the middle part of the installation cover plate, a thermal conducting strip is arranged in the sliding installation groove, thermal conducting wires are arranged on two sides of the thermal conducting strips, and a blind hole and a compression spring are arranged on the upper fixing block. The device provided by the invention is movably fit and combined and convenient to disassemble; the cable is tightly pressed and fixed via the limiting block and connected via the conductive block and the conductive baffle plate, when the temperature rises, the installation cover plate drops down and thus the terminal is connected, so as to be safer.

The invention discloses a combined active power cable connection device. The combined active power cable connection device comprises an adaptor body, wherein the adaptor body comprises an upper fixedblock and a lower fixed block, placement through holes are formed in middle parts of the upper fixed block and the lower fixed block, insulation partition plates are arranged at middle parts of the placement through holes, side fixed plates are symmetrically riveted at two sides of the adaptor body, threaded connectors are arranged at outer sides of the side fixed plates, thin steel sheets are arranged at tail ends of the threaded connectors, fixed sleeve covers are arranged at the peripheries of the threaded connectors, a sliding placement groove is vertically formed in a middle part of the upper fixed block in a penetrating way, a limitation block is movably engaged with the sliding placement groove, a conductive sheet and a wire are arranged on the limitation block, a placement cover plate is arranged on the upper fixed block, and a threaded rod is arranged at a middle part of the placement cover plate. The combined active power cable connection device is movably matched and combined and is convenient to disassemble, a cable is locked and fixed by the fixed sleeve cover, the tail end also can be pressed and fixed by the limitation block and communicates with the wire via the conductive sheet, and the combined active power cable connection device is convenient and flexible to use.

A segment of a fluid manifold includes a flexible thermal shield with an insulation space defined inboard of the thermal shield to provide thermal isolation from conditions external to the thermal shield. The thermal shield includes a helically corrugated metal tube having opposed first and second ends. An outer collar is threaded to an end of the helically corrugated metal tube. The outer collar includes a crimped portion and an uncrimped portion. The uncrimped portion is spaced apart from the corrugated helical metal tube more than the crimped portion to define a vent between the outer collar and the corrugated helical metal tube in venting communication with the insulation space to vent hot gases.

The invention discloses a cleaning head for an electric rotating mop. The cleaning head comprises a disc and a plurality of cleaning bodies which are arranged under the disc, distributed at intervalsin the circumferential direction and bent in the same direction, wherein the bending direction of the cleaning bodies is consistent with the rotating direction of the cleaning head during work; one ends of the cleaning bodies are connected to the center of the disc; the spacing between every two adjacent cleaning bodies is gradually reduced from outside to inside; garbage on the ground is wiped and gathered by the cleaning bodies into the gap between every two adjacent cleaning bodies and clamped and kept in the gap between every two adjacent cleaning bodies. The cleaning head can be directlyused for replacing a circular mop cloth used by an existing product without changing the existing electric mop, dirt can be gathered, and the garbage left on the ground is reduced.

The invention provides an electronic yarn trapper. The electronic yarn trapper comprises an electromagnet housing, an electromagnet coil, an iron core, a return spring, a yarn trapping cover plate, anadjusting bolt and an adjusting nut, wherein the electromagnet coil is mounted in the electromagnet housing; the iron core is matched with the electromagnet coil; the yarn trapping cover plate is fixed to the iron core; the adjusting bolt is parallel to the iron core; and the adjusting nut is connected with the adjusting bolt through threads; the two ends of the return spring abut against the electromagnet housing and the iron core, respectively; a yarn through groove allowing an upper thread to penetrate through is formed between the electromagnet housing and the yarn trapping cover plate; and the adjusting nut is arranged on one side, far away from the yarn through groove, of the yarn trapping cover plate and abuts against the yarn trapping cover plate. According to the electronic yarntrapper, the size of the yarn through groove is adjustable; when the thickness of the upper thread and the sewing speed of a first stitching of the sewing machine are changed, the working delay angleof the yarn trapper can be adjusted by adjusting the size of the yarn through groove so that the working delay angle of the yarn trapper is always kept within a range; and therefore, the working delayangle of the yarn trapper is controllable, and the stability of the working delay angle of the electronic yarn trapper is improved.

The invention provides an anti-thread-off process for a double-sided fabric, which is used for weaving the joint of every two color fabric weaves of a multi-color and inter-color double-sided fabric, adopts a flat knitting machine with a front needle bed and a rear needle bed for weaving, and comprises the following steps: step 1, weaving an A color fabric weave, and taking the tail layer of the A color fabric weave as the first layer of the joint; secondly, after the first layer of the joint is woven, yarn hiding action is conducted on the yarn of the color A in the direction opposite to the first layer of the joint in the first step, yarn of the color B is supplied, and yarn hiding action is conducted on the yarn of the color B in the direction opposite to the first layer of the joint in the first step by the distance of a plurality of needles; 3, weaving the front section of the last layer of the joint, wherein the yarn in the color B is used for weaving the front section of the last layer of the joint from the starting needle of the front section of the last layer of the joint in the direction opposite to the yarn hiding action in the step 2; 4, weaving the rear section of the tail layer at the joint; and step 5, weaving a B-color fabric weave.

The invention relates to the technical field of product appearance detection, and discloses a product appearance detection device and method. A controller of the device judges the quality of the appearance of a product according to a signal acquired by a sensor; when judging that the product is in a disqualified state, the controller controls an NG button switch to output a product NG state signal; through the adoption of a human-machine mode for detection, the assurance capacity of detection of a working procedure is improved, so that the disqualified product outflow probability of the product is P which is less than 0.00006 percent, delivery out of the production line of disqualified products is effectively avoided, and the factory quality of the product is guaranteed. According to the detection method, the controller judges the appearance quality state of the product to control the state signal of the product; when judging that the appearance of the product is in the disqualified state, the controller controls the NG button switch to output the NG state signal of the product, so that the usual phenomenon that defective products are delivered due to a fact that detection personnel omits inspection or does not find a disqualification mark in the prior art is avoided.

The invention discloses an overhead alternating-current air conditioner of a locomotive. The overhead alternating-current air conditioner comprises a shell, a totally-enclosed refrigeration compressor, a condenser, an evaporator, a throttling device, a condensate fan, an evaporating fan, a high-low voltage switch, a heater, a temperature relay and a control system. An air outlet and a return air inlet are arranged on the shell. The air outlet is composed of an ordinary air outlet and an adjustable air outlet. A mounting foot is arranged on the shell and fixed at the top of the locomotive by means of a bolt and reinforced by a locking bolt. An anti-vibration pad is arranged between the installing foot and the locking bolt. The overhead alternating-current air conditioner of the locomotive is capable of effectively adjusting temperature in the locomotive and effectively protecting internal staff of the locomotive against influence of the poor environment; and a filter net arranged in an air return grille is used for filtering air in the locomotive such that air quality of the locomotive is well improved and a protection effect upon body health of staff in the locomotive is achieved.

The invention discloses a thread trimming system of a sewing machine and a sewing method. The thread trimming system of the sewing machine comprises a thread trimming assembly, a thread trimming powerdriving device and a thread trimming ending movable knife, wherein the thread trimming assembly comprises a stationary knife and a movable knife rotationally connected to the stationary knife; the thread trimming power driving device is connected to the movable knife and is used for driving the movable knife to move, so that the movable knife and the stationary knife are matched for trimming andclamping threads; and the thread trimming ending movable knife is rotationally connected to the sewing machine shell, and the thread trimming assembly is connected to the thread trimming ending movable knife through a transmission mechanism, so that when the thread trimming ending movable knife rotates towards the preset thread trimming position, the transmission mechanism drives the thread trimming assembly to be away from the preset thread trimming position. Based on the arrangement of the thread trimming assembly, the thread end of the upper thread left on the bottom surface of the cloth can be shortened in the sewing process, and the bird nest phenomenon caused by winding of the thread end into stitches can be effectively avoided. The thread trimming assembly is of a shearing and clamping integrated structure, and the problem of seam starting and thread disengaging can be prevented. The thread trimming assembly and the thread trimming ending assembly are linked to avoid, so that the thread trimming assembly can be completely prevented from being touched when thread trimming of the thread trimming ending movable knife is completed in a mechanical mode.