272results about How to "Reduce the difficulty of replacement" patented technology

The invention discloses a GPS simulation method and system based on positioning and time service of a Beidou satellite. The GPS simulation system is additionally arranged at the front end of a GPS receiver of an existing base station, a time service result of a Beidou time service receiver is used for taming a local voltage controlled oscillator, and therefore the time of the local voltage controlled oscillator and the time of a Beidou system are synchronous. Under the action of the local voltage controlled oscillator, by using the positioning result and ephemeris parameters of the Beidou time service receiver, GPS simulation signals are synchronously generated for the GPS receiver to complete positioning and time service. In this way, conversion from GPS time service to Beidou time service can be achieved without replacing all devices (including the GPS receiver) in the base station, and therefore the difficulty of replacing the time service conversion devices can be greatly lowered. In addition, the base station after the devices are replaced does not need to depend on an existing GPS system controlled by the USA and uses a Beidou system with the proprietary intellectual property right of China instead, and then the safety and the reliability of communication are effectively promoted.

The invention belongs to the field of hypersonic wind tunnels, and relates to an inflatable axial sealing device used in a vacuum environment, which includes an inflatable sealing ring, a sealing cylinder, an adapter sleeve, an inflating pipeline and an air compressor, wherein the inflatable sealing ring, the sealing The sealing cylinder body and the adapter sleeve have an axisymmetric structure; the inflatable sealing ring is installed in the groove of the adapter sleeve, and the inflatable interface of the inflatable sealing ring cooperates with the inflatable interface of the adapter sleeve; the sealing cylinder enters the adapter sleeve Inside, the sealing ring can fully contact the outer surface of the sealing cylinder after being inflated; the inflation pipe connects the air compressor and the inflation port of the inflatable sealing ring. The inflatable axial sealing device of the present invention solves the shortcomings of the bellows connection mode, reduces investment and operating costs, reduces labor intensity and difficulty in replacing pipeline equipment, improves the efficiency of pipeline equipment replacement, and obtains a good vibration isolation effect, which can be applied to Axial vacuum seal between pipeline equipment of different calibers.

The invention discloses an LED screen dead pixel monitoring and early warning method and system. The method comprises the following steps: a. setting the standard characteristic value of the dead pixel amount of a target LED display screen; b. detecting the display data of each pixel point of the target LED display screen; c. according to the display data, calculating the practical characteristic value of the dead pixel amount; d. comparing the practical characteristic value with the standard characteristic value; when the practical characteristic value is more than the standard characteristic value, outputting a comparison result; and e. according to the comparison result, generating early warning signal data, and giving out early warning. The system is correspondingly provided with a detection unit, a control unit, an early warning unit and a regulation unit. When the practical characteristic value of the dead pixel amount of the target LED display screen exceeds the preset standard characteristic value, the invention gives out early warning so as to ensure lower replacement difficulty and lower replacement and maintenance cost.

The invention discloses a lithium ion battery management system and an online measurement method for cell capacity and health state of a battery electrical core. The system is composed of a master control unit, a cell sensing monitoring unit and an electric current sensor. High-low voltage separating design is adopted, and the cell sensing monitoring unit is used for monitoring and measuring the voltage of the battery electrical core monomer; the electric current sensor is used for measuring the busbar electric current of a major loop of the electric circuit; the master control unit is used for controlling the work mode of the lithium ion power battery group, processing and storing of data, and online-measuring the battery monomer electrical core capacity, on this basis, online diagnosis monitoring for the health state of the battery electrical core monomer is performed, reliable reference for the replacing of the battery electrical core is provided, the property and state of the lithium ion power battery group can be effectively monitored, important basis is provided for the calculating of other inner state parameters of the battery, important information is provided for the strategy of automobile, and the safety of the vehicle and the driver and passenger is guaranteed.

The invention discloses an electric locomotive electronic mutual inductor and an application method thereof. The mutual inductor comprises a voltage dividing circuit, an overvoltage protection circuit, a high voltage side photoelectric isolation processing unit circuit and a low voltage amplification circuit, wherein the output end of the voltage dividing circuit is connected with the input ends of the overvoltage protection circuit and the high voltage side photoelectric isolation processing unit circuit; the overvoltage protection circuit is grounded; the output end of the high voltage side photoelectric isolation processing unit circuit is connected with the low voltage amplification circuit; the voltage dividing circuit draws electricity from a high voltage contact network and directly divides high voltage into low voltage AC signals, and the voltage, after photoelectric isolation and signal reduction processing by the high voltage side photoelectric isolation processing unit circuit, is also converted into the low voltage AC signals for use of a rear-stage low voltage amplification circuit; and the low voltage amplification circuit is used for shaping of photoelectric isolation signals and at the same time performing feedback on the forward output of a linear optical coupler to enable the conversion precision of the linear optical coupler to meet design requirements. The mutual inductor and the application method, provided by the invention, have the advantages of small size, light weight, loss power consumption, good stability, high safety performance and the like.

The invention discloses a water lifting and supporting device. The device comprises a table type supporting table, guide rails, air bags, a gas pipe and a gas control unit. The table type supporting table comprises a table board and supporting pipes located on the lower portion of the table board; one end of each supporting pipe is fixedly connected with the table board, and a pipe hole is formed in the position, corresponding to the table board, of each supporting pipe; the guide rails stretch into the supporting pipes through the pipe holes and stretch out of the other ends of the supporting pipes; blocking pieces are welded to the upper ends of the guide rails, and the air bags are located on the inner sides of the supporting pipes; the bottoms of the air bags are connected with the supporting pipes through ropes, and springs are connected between the air bags and the bottom of the table board; the gas control unit is fixedly connected with the upper ends of the guide rails, and the gas inlet end of the gas control unit is connected with a gas pump through the gas pipe; and the gas outlet end of the gas control unit is connected with air inlets of the air bags through the gas pipe. The water lifting and supporting device is mainly applied to indoor small and narrow environments with pools, launching and water output operation of heavy objects can be rapidly and conveniently achieved, and manpower and material resources are saved.

The invention provides a connecting device and an excavator, and relates to the technical field of engineering machinery. The connecting device comprises a rack, an action mechanism, a main hook, a lock hook and a lock catch piece; the main hook is fixedly connected to the rack; the action mechanism comprises a driving piece and a linkage piece; the driving piece and the lock hook are rotationallyconnected with the rack separately; the driving piece is rotationally connected to the lock hook through the linkage piece; the driving piece drives the linkage piece to drive the lock hook to rotatein the direction away from or close to the main hook to be matched with the main hook to be connected with or separated from the accessory; and the lock catch piece is used for abutting against the action mechanism to lock the action mechanism when the lock hook is in the state of being connected with the accessory. According to the invention, the lock hook in the connecting device is matched with the main hook and the accessory in a moving mode to be detachably connected, and the accessory can be rapidly disassembled by operating the lock catch piece and the driving piece so that the accessory replacement difficulty can be reduced, and meanwhile the accessory replacement efficiency can be improved. The mechanical connection mode can effectively simplify a hydraulic control structure in the prior art, and the problem that a hydraulic system is complex in arrangement is avoided.

The invention provides an integrated filling type prefabricated slab damping track structure which comprises a prefabricated slab body. A rail and fasteners for fixing the rail are arranged on the upper surface of the prefabricated slab body. The cross section of the prefabricated slab body is in a polygon shape arranged symmetrically or asymmetrically so as to adapt to the cross sections of different tunnels at the bottom. Slope structures in a corner cut form are adopted in the two sides of the bottom of a track board. A non-prestress reinforced concrete structure is adopted in the prefabricated slab body. At least two conical through holes are formed in the prefabricated slab body along the center line of the slab. Magic caps are arranged in the through holes. The integrated filling type damping prefabricated slab structure can restrain shear damage to a limiting device from dynamic force generated to the track board due to temperature change, train starting, brake force and small radius curve transverse deformation, and stability of the structure is protected; the track board and an elastic element are isolated effectively, and therefore mechanical connection of the concrete structure is avoided.

The invention provides a connecting device and a replaceable solar wing structure. The connecting device comprises a first connecting assembly and a second connecting assembly, wherein the first connecting assembly is used for being connected with a solar wing, and the second end of the first connecting assembly is provided with a locking structure; the second connecting assembly is used for beingconnected with a solar wing driving mechanism and is provided with a matching structure, the locking structure can be automatically locked with the matching structure when the first connecting assembly moves from the starting point to the terminal point of a preset track so as to enable the two connecting pieces to be locked with each other, and the locking structure can be automatically unlockedwith the matching structure when the first connecting assembly moves from the terminal point to the starting point of the preset track; floating connectors are arranged on the first connecting assembly and the second connecting assembly, and after the two connecting assemblies are locked with each other, the two floating connectors are connected with each other in an inserted mode to conduct electricity. According to the structure, when the solar wing is replaced, only the solar wing needs to be moved or rotated along the preset track, and any other unlocking, locking and power connection operation is not needed, so that the replacement process of the solar wing is simplified, and the replacement difficulty of the solar wing is reduced.

The invention belongs to the technical field of energy dissipation and vibration reduction of disaster prevention and reduction and particularly relates to an eddy current tuned mass damper. The eddy current tuned mass damper comprises an upper top plate and a mass block composed of mass block bodies; connecting holes are formed around the upper top plate and the mass block bodies, the upper top plate is provided with spring connecting holes for being connected with spring spiral heads; lifting screw holes are formed in the two sides of the upper top plate; the upper spring spiral heads are connected with the upper top plate and provided with screw threads for being connected with springs; the lower spring spiral heads are connected with a lower bottom plate and provided with screw threads for being connected with springs; permanent magnets are disposed between the springs and the lower spring spiral heads; the permanent magnets and the lower spring spiral heads are in bolt connection; and a middle guide rod and the lower bottom plate are in bolt connection, the permanent magnets are arranged outside the middle guide rod, and the permanent magnets are in bolt connection with the middle guide rod. The eddy current tuned mass damper has the advantages of being high in damping, adjustable in frequency according to different working conditions, good in durability and easy to replace.

The invention discloses an assembly type ballastless track system. The assembly type ballastless track system comprises steel rails, fastening systems, an assembly type track slab, a packing layer anda lower foundation. The assembly type track slab comprises multiple unit plates and connecting mechanisms connecting the unit plates, wherein at least two connected unit plates are arranged in the transverse direction of the assembly type track slab, and at least two connected unit plates are arranged in the longitudinal direction of the assembly type track slab. The assembly type track slab is adopted, the large-size and large-weight ballastless track slab is divided into pieces, the factory prefabrication difficulty is reduced, the assembled track slab is small in deformation, transport andlifting are convenient, the replacement and maintenance difficulty is greatly reduced, and the adjusting capacity and the repairing capacity of the track system are enhanced; and an existing base isremoved, the concrete pouring workload on the site is reduced, the use amount of building materials is reduced, meanwhile, the construction speed and the construction efficiency are improved, and whenthe space height is limited, the occupied height of the track system can be reduced as well.

The invention provides an automatic argon blowing connector device. The problem that after being worn, a connector male end of an existing automatic argon blowing connector is not easily detached to be replaced can be effectively solved. The device comprises a connector male end and a connector female end, wherein the connector male end is fixedly arranged on transfer equipment through a male end mounting frame; the connector female end is arranged on the tank wall of a molten steel tank through a female end mounting frame; the connector male end comprises a male end connector body; a ventilating pipeline which is axially through is formed in the male end connector body. The device is characterized in that the male end connector body comprises a top part connector body, a connector main body and a bottom part connector body which are coaxially and detachably connected into a whole; two ends of the connector main body are detachably connected with the top part connector body and the bottom part connector body, respectively; a ventilating pipeline is respectively formed in each of the top part connector body, the connector main body and the bottom part connector body; the ventilating pipelines of the top part connector body, the connector main body and the bottom part connector body are coaxially through.

The invention discloses a regulating and force-bearing screw of a quick changing and locking device of a high-precision BT knife handle. An outer housing (3) is matched with a conical surface of the knife handle (1) through a conical hole; the locking device is equipped with a pull rod (8); the end part of the pull rod (8) is in threaded connection with the knife handle (1); the pull rod (8) passes through the outer housing (3) and is coaxial with the outer housing (3); the extended-out end part of the pull rod (8) is equipped with a regulating and the force-bearing screw (6); the regulating and the force-bearing screw (6) is connected and mounted on the pull rod (8) through threads, and is connected with the pull rod (8); and the regulating and the force-bearing screw (6) is locked on thepull rod (8) through a regulating rod locking nut (7). With the adoption of the technical scheme, locking force for knife handle mounting is guaranteed to be constant, quick changing and quick locking of the BT knife handle are realized, operating difficulties are reduced, production efficiency is improved, working reliability of the knife handle is improved, mounting and replacing difficulty isreduced, and processing precision of a machine tool is improved.

The invention discloses an air purification device with a conveniently-replaced filter element. A front panel is mounted on the front surface of a main body, an air suction hole is formed in the middle of the front panel, an air outlet is formed in the top of the front panel and directly faces towards a draught fan mounted at the top of the main body, a fan is mounted at the bottom of the draughtfan and directly faces towards the air suction hole, an activated carbon filter plate and an HEPA filter plate are sequentially arranged between the air suction hole and the fan, and mounting holes are formed in the four corners of the activated carbon filter plate and the HEPA filter plate. Air is sucked into the air suction hole when the fan rotates and is purified by virtue of the activated carbon filter plate and the HEPA filter plate, and purified air is blown out by virtue of the draught fan, so that the air purification is realized; and two slots are formed in the side of the main body,a pulling plate can slide in the main body through the slots, and a filter element which is traditionally fixed in the main body is mounted on the pulling plate, can be conveniently pulled out of themain body by the pulling plate and can be conveniently replaced, so that the replacement difficulty is reduced.

The invention discloses a control circuit for a power generator for a hazardous article transport vehicle. The control circuit comprises a power generator, a storage battery connected with the outer part of the power generator and a vehicle electrical appliance load; the power generator comprises an adjustor, a magnet exciting coil and a three-phase rectifier bridge, wherein the output end of the three-phase rectifier bridge is connected with the storage battery and the vehicle electrical appliance load; the input end of the three-phase rectifier bridge is simultaneously connected with the anode of a rectifying diode set and a star-shaped stator coil; the negative electrode of the magnet exciting coil is connected with the adjustor; the other end of the adjustor is connected with a ground wire; the positive electrode of the magnet exciting coil is connected with a piece of dropping equipment; the other end of the dropping equipment is connected with a power master switch by a charging indicator lamp; the dropping equipment comprises a relay and a first external joint; the cathode of the rectifying diode set and the regulator are connected with the first external joint. The control circuit can avoid generating overvoltage and over-current, and is also applicable to the power generator on the hazardous article transport vehicle. Moreover, the control circuit is low in production cost, and is easy to maintain and change.

The invention discloses a capping lifting mechanism, a capping device and a capping machine. The capping lifting mechanism comprises a capping main shaft and a lifting assembly for driving the capping main shaft to ascend and descend, wherein the lifting assembly comprises a rack and a gear which are meshed with each other, and a worm gear and a worm which are meshed with each other; the rack is fixed to the capping main shaft; the gear and the worm gear are arranged coaxially and fixedly. The capping device comprises an upper pressure head assembly, a bottle supporting sleeve assembly, a capping main shaft locking mechanism for locking the capping main shaft, and the capping lifting mechanism, wherein the upper pressure head assembly is fixedly arranged on the capping main shaft; a capping component is arranged along the circumferential direction of the upper pressure head assembly; the capping main shaft sleeves in the bottle supporting sleeve assembly. The capping machine comprises the capping device and a bottle conveying device for conveying bottles, wherein the bottle conveying device comprises a packing auger conveying mechanism and a wheel shifting conveying mechanism which are connected in sequence. The capping lifting mechanism, the capping device and the capping machine have the advantages of simple and compact structure, convenience in adjustment and operation and high working efficiency.

The invention discloses a ship loader pitching hinge point bearing replacement method. A ship loader comprises a portal frame (1) and a boom (2), the tail of the boom is hinged to the portal frame through pin shafts (3), and a bearing (4) sleeves each pin shaft. The replacement method includes: firstly, placing the boom at a horizontal position; secondly, arranging a pushing device (2) on the portal frame, and pushing the tail of the boom through the pushing device so as to eliminate force borne by the pin shafts; thirdly, detaching the pin shafts, and then replacing the bearings prior to mounting the pin shafts; fourthly, detaching and removing the pushing device. The boom is placed at the horizontal position, the tail of the boom is pushed to eliminate acting force applied by the boom to the pin shafts, then the pin shafts are detached and the bearings are replaced, so that bearing replacement difficulty can be lowered, replacement efficiency is improved, and working reliability of a ship loader pitching mechanism can be improved.