46results about How to "Eliminate security incidents" patented technology

The invention discloses an automatic stamping machine, which comprises an upper die assembly and a lower die assembly, the lower die assembly comprises a lower die and a lower die driver, and the lower die driver comprises a turntable assembly and a turntable drive motor. The invention can ensure that an operation position of a stamping operator can be isolated from a stamping position by a turntable, consequently, an enough safe distance exists between the operation position and the stamping position when an upper material and a lower material are stamped, the hands of the operator can be protected from injury when misoperation or a mechanical fault occurs, and thereby safety is high; because an automatic control system controls the stamping process, human intervention is reduced, safety accidents caused by human subjectivity are eliminated, and the working efficiency is increased; because the combined structure of a central disk and an annular bearing platform is provided with buffer springs, the eccentric wear between the central disk, a drive shaft and bearings can be effectively prevented, the transmission of stamping force can be effectively obstructed as well, so that the central disk and the drive assembly thereof can be prevented from being affected by the stamping force, and thereby the service lives of the stamping turntable and the driver thereof can be prolonged.

The invention discloses a nano-power battery composed of lithium manganate and graphene. The nano-power battery comprises anodes, cathodes, diaphragms, electrolyte and a battery housing, wherein the diaphragms are arranged between the anodes and the cathodes; the electrolyte is arranged in the battery housing; the anodes comprises, by weight percent, 92-95 % of anode active substances, 2-4 % of an anode binder, 0-4 % of an anode conductive agent and the balance being an anode current collector; and the cathode comprises, by weight percent, 89-93 % of the graphene, 0-2 % of a cathode conductive agent, 0-2 % of a thickening agent, 2-3 % of a cathode binder and the balance being a cathode current collector. The invention further discloses a preparation method of the power battery composed of the lithium manganate and the graphene. The nano-power battery composed of the lithium manganate and the graphene and the preparation method thereof provided by the invention have advantages of large power, large capacity, high discharge efficiency, long usage life, stabile internal structure and good safety.

The invention provides a brake failure-preventing automatic compensation control method and system for a friction plate gap and a vehicle and belongs to the field of vehicle braking. The method comprises the steps of acquiring wheel speed data; recognizing a current traveling working condition of the vehicle according to the wheel speed data; and pressurizing a piston of a clamp of the brake according to the travelling working condition and pushing the piston of the clamp of the brake to reset. The system comprises a wheel speed acquisition unit for acquiring the wheel speed data, a working condition recognition unit for recognizing the current traveling working condition of the vehicle according to the wheel speed data and a friction plate gap compensation unit for pressurizing the pistonof the clamp of the brake according to the travelling working condition and pushing the piston of the clamp of the brake to reset. The working condition that the piston of the clamp retreats is recognized according to the wheel speed data and the piston of the clamp is pressurized periodically for friction plate gap compensation, so that it is ensured that the braking clamp is in a normal position or a position beneficial to emergency brake, the safety of the vehicle is ensured and panic of a driver is prevented.

The invention discloses a mold for manufacturing a filter screen assembly and a manufacturing method thereof. The disclosed mold for manufacturing the filter screen assembly comprises first and second molds respectively comprising a first parting surface and a second parting surface. When the molds are combined, the first parting surfaces are matched with the second parting surfaces and the first and the second molds at least form a predetermined side framework cavity. The first and the second molds respectively comprise a first cutting edge and a second cutting edge; and the first and the second cutting edges are respectively of closed ring structures, and the size of the ring structure of the first cutting edge corresponds to the size of a netted body in the filter screen assembly. In a mold combining process, the first cutting edge is matched with the second cutting edge for cutting. When a filter screen assembly is manufactured via the molds, a procedure of finishing net edges is not needed after injection molding; and therefore, the damage of the filter screen assembly by the net edge finishing procedure is avoided and the product percent of pass in the manufacturing process of the filter screen assembly is improved.

The invention provides a grounding measurement device and a grounding wire detection system, which relate to the technical field of circuit troubleshooting. The grounding measurement device comprisesgrounding wire hangers and a grounding measurement mechanism; the grounding measurement mechanism comprises a grounding post-connecting part and a resistance meter body; the grounding post-connectingpart is connected to the grounding wire hangers through wires, and is used for being connected to a grounding post; the resistance meter body is connected to the grounding post-connecting part; the resistance meter body comprises a resistance measurement module, a master control module, and a communication module; the resistance measurement module is connected to the master control module, and isused for acquiring voltage information and current information and transmitting the voltage information and the current information to the master control module; the master control module obtains resistance information according to the voltage information and the current information; and the master control module is in signal connection with a monitoring terminal through the communication module,and is used for transmitting the resistance information to the monitoring terminal. The requirement of grounding resistance measurement under special environments is effectively met; and moreover, thecommunication function enables the monitoring terminal to receive grounding resistance in real time.

The present invention relates to a cover board structure installed between a construction site and a sidewalk to maintain urban aesthetics and to protect pedestrians from the construction site. Left and right panels (20) are clamped by a clamp (30) to a scaffolding rod (12) connected to and fixed on an H-beam (10). A reinforcement rib (22) is arranged across the front surfaces (21) of each of the left and right panels (20), and the left and right panels are tightly and firmly coupled together by a joint groove (23) and a joint protrusion (24) protruding from the respective edges of the panels and biased toward one of the left and right panels (21). The clamp (30) has a bent piece (35) which is caught by the panels (20). The bent piece (35) is rotatable about a shaft pin (33) which interconnects a main body (31) of the clamp (30) and a connection piece (34).; Thus, the panels (20) can be clamped by the clamp (30) even when a cover board is installed on a slope and the scaffolding rod (12) is tilted at an angle identical to that of the slope, thereby enabling the installation of the cover board using the minimum number of scaffolding rods (12).

The invention relates to the electrical field, in particular to a strayed entrance preventing transformer substation with an alarm system and safety fences. The strayed entrance preventing transformer substation comprises a transformer substation body and a transformer substation door and is characterized in that the transformer substation body is provided with grooves above and under the transformer substation door, a rod body matched with the grooves is arranged in the grooves and is connected and fixed to the transformer substation body through a lock, an infrared sensor is arranged at the position, blocked by the rod body, of the transformer substation door and is connected with a control module in the transformer substation body, and the control module is connected with an alarm module. A verification module is further arranged on the outer wall of the transformer substation body and is connected with the control module, an electronic lock is arranged on the inner side of the transformer substation door, and the safety fences are further arranged outside the transformer substation. The strayed entrance preventing transformer substation prevents persons from stealing or damaging public facilities on purpose and is lower in cost and suitable for wide popularization.

The invention discloses automatic riveting and pressing equipment for disk chip assemblies, belongs to the technical field of mechanical equipment, and aims at solving the problem that the traditional disk chip assembling riveting and pressing operation is backward in production manner, low in production efficiency, high in potential safety hazard and severe in noise pollution. The automatic riveting and pressing equipment for disk chip assemblies mainly comprises a board, a step motor, a clutch, a brake, a turbine reducer, a divider, a rotary worktable, a disk station, a press and an unloading mechanism, wherein the rotary worktable with the disc station is fixed above the divider; the press is arranged on one side of the rotary worktable; and the unloading mechanism is arranged on the other side of the rotary worktable. The automatic riveting and pressing equipment for disk chip assemblies breaks the traditional disc chip assembly punch production operation mode, fills the gaps of domestic and foreign markets, is simple in structure, strong in automation, high in production efficiency, low in noise pollution and high in practical value, and can be widely applied to the technical field of mechanical manufacturing.

The invention discloses a preparation method of a silodosin key intermediate, and belongs to the technical field of medicine synthesis. Carrying out Friedel-Crafts reaction on indoline and trichloroacetonitrile to obtain a compound 1; brominating to obtain a compound 2; then carrying out substitution with 2-(3-bromopropoxy) tetrahydro-2H-pyran to obtain a compound 3; then carrying out nucleophilic addition with (S)-epoxypropane or (R)-epoxypropane at an ultralow temperature to obtain a compound 4; then carrying out Mitsunobu reaction with phthalimide to obtain a compound 5 (configuration inversion) or esterifying with paratoluensulfonyl chloride, and reacting with potassium phthalimide under the condition of inorganic alkali to obtain the compound 5; reducing through hydrazine hydrate to obtain a compound 6; then removing tetrahydropyran protection from p-toluenesulfonic acid to obtain a compound 7; performing amino Boc protection under an alkaline condition to obtain a compound 8; esterifying with benzoyl chloride to obtain a compound 9; removing Boc protection with hydrochloric acid to obtain a compound 10; and salifying with L-tartaric acid to obtain a compound 11. Compared with the prior art, the preparation method has the advantages that cyano groups synthesized by Vilsmeier reaction, hydroxylamine oximation and acetic anhydride dehydration at the 7 site and introduction of amino groups at the 5 site through nitro groups or reductive amination are avoided, and heavy metals such as Pd/Pt/Zn and the like do not need to be used; the continuous operation of the whole steps is increased, the production cost of the silodosin intermediate is greatly reduced, and industrial large-scale production is facilitated.

The invention provides a safety device for a stop valve of a turbine pump. The safety device comprises a travel switch, a contact block and a stop valve driving device, wherein the travel switch is interlocked with a control circuit of the turbine pump; only when the travel switch is turned on, can the control circuit make a motor drive the turbine pump to rotate; the contact block is arranged at the top end of a valve rod of the stop valve, a contact of the tail end of the travel switch is matched with the contact block, and when the contact of the tail end of the travel switch is in contact with the contact block, the travel switch is turned on; the stop valve driving device is connected with the contact block and drives the contact block to move upwards or downward, and the contact block is made to make contact with or be separated from the contact of the tail end of the travel switch. By introducing the travel switch interlocked with the control circuit of the turbine pump, the effect that the turbine pump can start operating and supply oil only when the stop valve is opened is guaranteed, and idling of the turbine pump is effectively prevented.

The invention relates to the field of output rotating shaft angular velocity measurement of a to-be-measured object. The invention discloses a method for realizing multifunctional speed measurement of a rotating mechanism based on a logic controller. A coded disc is prepared according to the diameter of an output rotating shaft of a to-be-measured object; a proximity switch is installed on the to-be-measured object, a transmitting head and a receiving head of the proximity switch are aligned with the through hole circle of the coded disc, and the proximity switch is connected with a PLC; and the PLC receives signals of the proximity switch to form pulses, the total pulse number A is obtained in a time period T, the angular velocity [omega] of the output rotating shaft of the object to be measured is equal to 2[pi]*A/(T*N), N is the number of the through holes, and [pi] is the circumference ratio. Various defects existing in a complex industrial field environment when a traditional integrated pulse speed measuring device is used are overcome.

The invention provides a hydraulic filter element replacing device and a using method thereof. The replacing device comprises a horizontal supporting mechanism, a vertical supporting mechanism and a guiding barrel, wherein the horizontal supporting mechanism can move in the horizontal direction; the vertical supporting mechanism is arranged on the horizontal supporting mechanism; the guiding barrel is mounted on the vertical supporting mechanism and vertically arranged, and by rotating the vertical supporting mechanism, the guiding barrel can be driven to move in the vertical direction; a spring, a supporting piece and an annular matching piece are sequentially arranged in the guiding barrel from bottom to top, the structure of the inner side face of the annular matching piece correspondsto the structure of the bottom end of a filter element barrel of a hydraulic filter element, and when the inner side face of the annular matching piece sleeves the bottom end of the filter element barrel of the hydraulic filter element, the annular matching piece is driven to rotate, and the annular matching piece drives the filter element barrel of the hydraulic filter element to rotate. Manual power for lifting and aligning is not needed, and the labor load is lowered; the replacement quality of the hydraulic filter element is guaranteed, and equipment damage is avoided.

The present invention relates to a gap automatic safety pressure regulator. Said pressure regulator includes leather cover, upper cover gas chamber, pressure-regulating gas chamber, gas inlet tube, gas outlet tube, clamping plate, pressure-regulating spring, pressure bar, control chamber and safety spring. Said invention also provides the connection mode of all the above-mentioned components and its working principle. If the gas is leaked, the gas source can be automatically cut off by means of safety pressure regulator.

The invention discloses a rapid feeding device and feeding method for injection molding equipment. The device comprises a support, a first belt wheel and a second belt wheel are arranged at one end of the top of the support, a third belt wheel is arranged at the other end of the top of the support, one end of a first steel wire rope is connected with a weight set, the other end of the first steel wire rope sequentially penetrates through the first belt wheel and the third belt wheel, penetrates through a hanging ring and is connected with a material suction device, a material inlet is formed in the bottom of the material suction device, the top of the material suction device is connected with a material suction machine through a material suction pipe, one end of the second steel wire rope is connected with the output end of the air cylinder, and the other end of the second steel wire rope sequentially penetrates through the second belt wheel and the third belt wheel and is connected with the hanging ring. The packaging amount is improved, automatic feeding is achieved, the labor intensity of workers can be reduced, the feeding working hours are saved, and the problems of product breakage and shortage are solved.

The invention aims at providing an asphalt pavement cold laying method. An asphalt pavement wetting agent is sprayed and scattered to sufficiently wet asphalt among cold material particles, and primary viscosity is formed; and through sufficient grinding forming, the particles are closely attached, the wetting agent is dissolved in asphalt, fusing is performed on the asphalt on the surface of an asphalt cold material, the asphalt is solidified when drying and evaporating are performed on the wetting agent, the asphalt cold material is attached more and more firmly to asphalt of an existing pavement into a whole, high durability is realized, in the laying process, there is not need to perform hot laying through a traditional heating machine, and the laying cost is reduced. The problems thatwhen pits appear in an existing asphalt pavement, hot laying is needed for repairing the asphalt pavement, many machines and personnel are needed in the hot laying process, the repairing process is troublesome, the smell is strong in the laying process, and the environment is affected are solved.

The invention discloses a manipulator capable of clamping plastic parts. The manipulator comprises a rotating shaft mechanism, an air cylinder is arranged below the rotating shaft mechanism, the air cylinder is connected with a first rubber suction disc, a second rubber suction disc and a metal chuck through a first air pipe, a second air pipe and a third air pipe, the air cylinder is fixed to the upper portion of a countertop, and a first connecting rod and a second connecting rod are connected to the lower portion of the countertop. The first rubber suction disc and the second rubber suction disc are connected below the first connecting rod and the second connecting rod. According to the manipulator, the manipulator is adopted for clamping, thus the safety accident that personnel are scalded due to incomplete cooling of injection demolding and too high temperature is overcome, by means of clamping of the suction discs of the manipulator, the quality problems of product scratch, deformation and the like caused in the plastic injection part clamping process are solved, and the product percent of pass is increased.

The invention discloses a gas pipeline timing valve. The gas pipeline timing valve is composed of six parts, namely a main pipeline interface, a gas inlet pipe, a pipeline master switch, a timer, a solenoid valve and a gas stove. Through the timer, time during which gas is available in the gas circulation direction can be set, and thus use safety of the gas stove is enhanced; safety accidents caused due to the fact that a user forgets to cut off a gas source by negligence are eliminated; and meanwhile, gas waste can also be avoided.