59results about How to "Good anti-shock effect" patented technology

The invention relates to a tunnel axial damping and energy absorbing device and a tunnel lining structure with the same. The tunnel axial damping and energy absorbing device comprises two connecting pieces, wherein the two connecting pieces are used for being connected with an energy absorbing body and adjacent lining body structures divided in the axial direction of a tunnel, and the energy absorbing body is arranged to be rigid in the radial direction of the tunnel and can generate relative displacement for absorbing the axial energy in the axial direction of the tunnel. According to the tunnel axial damping and energy absorbing device provided by the invention, due to the rigid characteristics in the radial direction of the tunnel, the capacity of bearing static loads of the whole tunnel lining is not damaged, the tunnel has certain flexibility in the axial direction, the anti-seismic capacity of the axial tension and compression deformation of the tunnel can be improved, the phase derivative stress and relative displacement generated by an earthquake can be absorbed, a good earthquake resistance and absorption effect is achieved, and the safety of the tunnel lining structure during the earthquake is guaranteed; and in addition, the device is convenient to install and easy to replace.

An electric shock prevention device for an electric welding machine is provided with a finger ring line, an electric shock prevention circuit, a finger ring line detecting circuit and a transmission switching signal circuit, wherein output of the electric shock prevention circuit and output of the finger ring line detecting circuit are respectively connected with an electric leakage protection unit, the transmission switching signal circuit is connected with the electric leakage protection unit through a required switching circuit, and the finger ring line comprises a core wire, an insulating layer, a shielding layer and an outer insulating layer in a wrapping manner from inside to outside. The electric shock prevention device is rapid and reliable in tripping and excellent in electric shock prevention effect. The simple finger ring signal line (the signal line is sleeved on a finger or held in a hand, or the signal line is connected with a conductor, and then the conductor contacts with the hand or a wrist, an ankle and the like) synchronously and accurately extracts weak electric induction signals when an optional portion of the body of an electric welder is in electric shock, and rapidly drives an electric leakage protector, a specially customized high-power relay or a specially customized contactor to cut off power (a person in electric shock can be protected by driving the high-power relay or the contactor to cut off the power).

The invention relates to a steel wire rope type computer hard disk vibration isolator, mainly solving the technical problem of vibration isolation of computer hard disks. An upper splint and a lower splint of the vibration isolator form a frame plate body, a set of steel wire ropes are fixedly arranged at the periphery of the plate body, a distance between the top surface of the upper splint and the bottom surface of the lower splint is 15-25mm, the diameter of each steel wire rope is 1-1.6mm, and an angle between a central connecting line of an upper fixing hole and a lower fixing hole and the bottom surface is 25-85 degrees, wherein the steel wire ropes pass through and connect the upper fixing hole and the lower fixing hole, therefore, the invention is suitable for vibration reduction of the computer hard disks with various specifications.

The roadway impact resistance calculation method considering the support-pressure relief-surrounding rock coupling effect comprises steps of the corresponding test piece strength being determined according to the roadway surrounding rock strength grade, and the top plate support grade and the test piece type being determined by using the support parameters of the top plate; comprehensively considering support parameters and pressure relief parameters of two sides of the roadway, and determining test piece types of the two sides; determining an anchoring position according to the type of a top plate test piece, determining the anchoring position and a hole adding position according to the types of two side test pieces, and manufacturing a test piece meeting the requirements; performing a dynamic impact test and test piece energy calculation on the test piece, performing indoor test piece manufacturing and testing according to field engineering conditions, and calculating anchoring surrounding rock bearing energy of unit volume of two sides and a roof according to a stress-strain curve obtained by the test; finally, a calculation result being converted into field engineering for energy calculation of the roadway anchoring bearing structure.

The invention discloses an anti-electric shock plug for a data cable. The anti-electric shock plug comprises a plug and an anti-electric shock glue sheath, wherein the anti-electric shock glue sheathis arranged at a head end of the plug and fixed to the plug; the plug comprises an outer shell, a socket, protective tubes, a fixed seat and a data wire; the socket is arranged on the one end, fixed to the folded glue sheath, of the outer shell and is fixed to the outer shell; the protective tubes are arranged in the outer shell and connected with the socket; the fixed seat is arranged at the other ends of the protective tubes and is fixed to the outer shell; and the data wire is arranged at the other end of the fixed seat. When the anti-electric shock plug is used, a hand of a user can be protected through the anti-electric shock glue sheath, an electric shock caused by contact of a finger on the surface and copper pins is avoided, furthermore, the damage to the data cable or even a firecaused by overload during energization can be avoided through the protective tubes arranged in the plug, and the anti-electric shock plug can be fused to cut off current when the current abnormally rises to a certain height and temperature, thereby playing a role in protecting safe operation of a circuit. Therefore, the anti-electric shock plug for the data cable has the advantages of being simplein structure, good in anti-electric shock effect, safe and reliable.

The invention relates to the technical field of electrical equipment, in particular to a mobile patch panel structure with an alarm function. The mobile patch panel structure comprises a patch panel body and a power line, wherein the power line is connected with the patch panel body; one side of the patch panel body is provided with a patch panel cover which is movably connected with the patch panel body; a finger slot position made of an insulating material is arranged on the upper surface of the patch panel body; cooperatively used buckle structures are correspondingly arranged on the patch panel cover and the patch panel body; a control circuit board, a humidity sensor and an alarm apparatus are arranged in the patch panel body; the humidity sensor and the alarm apparatus are electrically connected with the control circuit board; and the control circuit board is electrically connected with a circuit in the patch panel body. The patch panel cover is arranged on the patch panel body; and the patch panel cover covers the patch panel body when not used, so that an electric shock can be prevented; and the safety is improved. The finger slot position made of the insulating material is arranged on the patch panel body; and the finger slot position is pressed by a finger for plugging when used for plugging the patch panel, so that the safety is improved.

The invention belongs to safety supporting and protecting equipment for coal mines and particularly relates to a mining diameter-expanding type anti-impact single hydraulic bracket, which comprises a single hydraulic bracket (5) and a steel plate (1), wherein the upper main body of the single hydraulic bracket (5) is in the shape of a variable-diameter boss, a diameter-expanding pipe (2) which is provided with a diameter-expanding pipe-inserting slot (2-1), is engaged with the single hydraulic bracket (5) and is the same as the single hydraulic bracket (5) in shape is installed on the variable-diameter boss of the single hydraulic bracket (5), a diameter-expanding sleeve (3) which is closed at the upper end is inserted into the diameter-expanding pipe-inserting slot (2-1), the closed inner top end of the diameter-expanding sleeve (3) is connected with the top end of the diameter-expanding pipe (2), an anti-tilting sleeve (4) is installed by connecting the periphery of the diameter-expanding sleeve (3) and the single hydraulic bracket (5) through threads, and the steel plate (1) is fixedly arranged at the top end of the diameter-expanding sleeve (3). Through the mining diameter-expanding type anti-impact single hydraulic bracket, the problems that the dynamic response time of an overflow valve is insufficient and the overflow valve is too late to turn on when impact ground pressure occurs are solved, the situations of bending, breakage and cylinder explosion of the single hydraulic bracket are prevented or lightened when the impact ground pressure occurs, and diameter-expanding pipe parts are conveniently replaced.

The invention discloses a coal mine impact ground pressure and harmful gas comprehensive prevention and treatment system and method. Firstly, according to roof lithology and pressure characteristics of a coal mining work face, a target rock layer of horizontal well staged fracturing is determined, according to the target rock stratum and coal seam work face characteristics, a well spacing manner of a horizontal well is determined, the horizontal well is drilled, in the horizontal well, a target rock stratum and a coal seam are subjected to fracturing, through fracturing, the target rock stratum and the coal seam form an inter-communication net-shaped fracture, a ground pump drainage system is built, harmful gas in the coal seam is subjected to pump drainage, the horizontal well is mountedin the target rock stratum, in the horizontal well, the target rock stratum and the coal seam are subjected to fracturing, the inter-communication net-shaped fracture is formed in the target rock stratum and the coal seam, fracturing pressure relief of the target rock stratum is achieved, the stress state of a coal seam roof is changed, happening of an impact ground pressure accident is avoided, and meanwhile, release and pump drainage of harmful gas in the coal seam can be achieved.

The invention discloses a safe power supply sliding-contact bus. A flame retardant layer comprises the following components, by mass: 9 to 16 parts of neoprene, 10 to 18 parts of tetraethyl orthosilicate, 23 to 26 parts of amino resin, 10 to 18 parts of neopentyl glycol, 13 to 19 parts of sodium pyrophosphate, 16 to 19 parts of diatom ooze, 18 to 23 parts of montmorillonite powder, 11 to 18 partsof hydroxyethyl cellulose, 20 to 28 parts of flame retardants, 8 to 10 parts of film-forming auxiliary agents, and 12 to 19 parts of defoaming agents. An anti-electric shock layer includes the following components, by mass: 22 to 27 parts of phthalazinone ether sulfone ketone modified resin, 13 to 19 parts of micro silicon carbide powder, 10 to 15 parts of graphite fluoride, 20 to 29 parts of black silicon carbide, 8 to 11 parts of benzoyl peroxide, 11 to 19 parts of mixed rare earth chloride, 20 to 28 parts of sodium lignin sulfonate, 10 to 17 parts of sulfonated succinic acid, 22 to 29 partsof phosphatidylcholine bilayer, 12 to 19 parts of coupling agents, and 26 to 29 parts of flatting agents.

The invention provides a household intelligent terminal board, which comprises a terminal board main body provided with a plurality of sockets and a protective cover arranged on the front side thereof. The protective cover comprises a lower cover body which is fixedly arranged and an upper cover body which is fastened on the lower cover body and can be turned upwards. The lower cover body comprises end portions which can be fixed with the main body of the terminal board on the left and right sides, and a flexible connection portion between the two end portions. A relay for controlling the current connection and disconnection in the main cable is arranged on the main body of the terminal board. The invention has the advantages and positive effects that the structure design of the inventionis reasonable, the socket can be shielded under normal conditions by providing an open and closed upper cover body, and the opening of the upper cover body requires a series of operations with logicalsequence, and the upper cover body has excellent anti-electric shock effect. In addition, the intelligent degree is high, only when the contact head of the ejector is in contact with the corresponding contact sensor, the power supply can be turned on, and the safety is greatly improved.

The invention discloses a safe anti-loosening socket, which comprises a shell, wherein two stacked inserting grooves are formed in the side wall of the shell, trigger mechanisms are arranged in the two inserting grooves correspondingly, the trigger mechanism comprises a piezoelectric ceramic block fixed to the bottom in the inserting groove, the side wall of the piezoelectric ceramic block is connected with a push plate through an extrusion spring, two symmetrically-arranged clamping grooves are formed in the inner wall of the inserting groove, power connection elastic sheets are fixed to theinner walls of the two clamping grooves, and a power connection cavity is formed in the shell. According to the invention, by arranging the extrusion spring, the plug can be completely inserted into the socket by a certain pushing force, and only when enough pushing force is applied, enough voltage can be applied to the electrorheological fluid by the piezoelectric ceramic so as to connect a circuit, so that the circuit cannot be connected when external force is small, electric shock caused by the fact that fingers or a conductive object is inserted into a slot by an infant can be avoided, anda good anti-electric shock effect is achieved.

The invention discloses a degassing machine temperature monitoring device which comprises a GBF degassing machine. The GBF degassing machine is provided with a titanium alloy thermocouple protection tube. A thermocouple is arranged in the titanium alloy thermocouple protection tube. The thermocouple is connected with a control panel of the degassing machine through a compensating lead wire. In the degassing process, a thermodetector does not need to be manually used to detect a temperature in a flowing mode, so that the personal safety of stuffs is ensured, the waiting time and the aluminum water heat loss are reduced, and the working efficiency is improved. The thermocouple protection tube is made of a titanium alloy material, so that the degassing machine temperature monitoring device is corrosion-resistant and has good effects of resisting chilling and heat shock and long service life.

The invention relates to a load migration impact mine pressure prevention and control method for a ground fracturing thick and hard rock stratum. The method comprises the steps that firstly, the thick and hard rock stratum in overlying strata is divided into multiple layers of thin rock stratums, after stoping, the thick and hard rock stratum can be bent and sink integrally, the beam forming phenomenon is avoided, coal in a mining area is not subjected to stress concentration any more, and inducements generated by impact mine pressure are solved from the far field range. As cooperation, roof rock stratums on the two sides of a haulage roadway can be cut off through roof cutting work near a stope, and stress concentration generated by suspended roof is reduced; the crushing and swelling amount is effectively increased through manual construction of a horizontal fracturing and swelling layer, supporting on the overlying strata is increased, and sinking of the overlying strata is reduced; and the coal is fractured through construction of a horizontal fracturing and pressure relief drill hole, the coal is prevented from being elastic, the three-in-one cooperation anti-impact effect is good, and the method is particularly suitable for a deep-buried coal seam. In addition, for the construction scheme, a corresponding three-roadway arrangement scheme is creatively provided.

The invention discloses an electric shock prevention socket which comprises a socket shell, a jack, jack baffles and two rotating rods. The two-hole jack is arranged on the socket shell. The two symmetric and crossed rotating rods are arranged inside the socket shell. A rotating shaft connecting the two rotating rods together is arranged at the crossed position of the two rotating rods. One end of the rotating shaft is connected with the inner side wall of the socket shell. The lower ends of the two rotating rods penetrate through an opening in the bottom of the shell, and the other ends of the two rotating rods are each connected with one jack baffle, so that the jack baffles just plug the jack. A tension spring connecting the two rotating rods is arranged above the rotating shaft. The electric shock prevention socket has the advantages that the electric shock prevention effect is better, a plug does not make direct contact with the jack baffles when plugged into the socket, damage to the jack baffles is avoided, and therefore the electric shock prevention socket is more durable.

The invention relates to the field of auto parts and provides an electronic lock for a fuel tank cap. The electronic lock comprises a three-dimensional shell and is characterized in that the shell isprovided with a signal connecting device and a triggering device, and a lock catch device and a motion switch device are arranged in the shell; the shell comprises a lock cover and a lock barrel; thetriggering device is arranged on the lock cover, and the lower end of the triggering device movably penetrates the lock cover; the signal connecting device is arranged on the lock barrel, and the bottom of the lock barrel is provided with a channel coordinated with the signal connecting device; the lock catch device is arranged in the lock barrel and connected with the signal connecting device; the motion switch device is arranged in the lock barrel, the top end of the motion switch device is connected with the lower end of the triggering device, and the motion switch device is coordinated with the lock catch device; the signal connecting device controls the motion switch device through the lock catch device so as to control the locking and unlocking states of the triggering device. By theelectronic lock, the locking and unlocking states can be controlled by utilizing signals, and the problem that intelligent unlocking cannot be achieved in the prior art is solved.

The invention discloses an anti-electric shock transformer based on a block chain, include a housing and a support block, the supporting block is arranged at the lower end of the shell, the lower endof the support block is fixedly connected with an anti-skid plate, the upper end of the shell is connected with an inclined plate, the outer side of the lightning rod is provided with a first insulating sleeve, the front side of the shell is connected with a box door through a hinge, the side surface of the shell is fixedly connected with a vertical baffle plate, the bottom of the shell is fixedlyconnected with a transverse baffle plate, a fixing hook is installed on the side of the shell, the side surface of the shell is provided with a through hole, a second insulating sleeve is fixedly connected to the inside of the through hole, the inside of the second insulating sleeve is provided with a terminal post, An annular convex rib is arranged between the terminal post and the second insulating sleeve, and a sealing ring is connected between the second insulating sleeve and the housing. The invention is convenient to prevent the external rainwater from entering the housing along the boxdoor by setting a vertical baffle plate and a transverse baffle plate, thereby avoiding electric leakage and preventing electric shock accidents.

The invention discloses a lead connecting plug socket. The lead connecting plug socket comprises a latch shell with a metal latch therein and a plug shell with a metal plug therein, wherein the latch shell and the plug shell are provided with end closures respectively; lead plugging holes are formed on the end closures; the latch shell is provided with a latch end; the plug shell is provided with a plug end which is in matched installation with the latch end; and the plug end is provided with an inner cavity which can enwrap the latch end and does not expose the latch end after the latch end is in matched assembly with the plug end. When the lead connecting plug socket is used, a lead can be firmly fixed only by plugging the lead into a plug or a socket, so that the trouble of using a tool to fix the lead is omitted; the metal latch and the metal plug are arranged inside a housing and are not exposed, so that the lead connecting plug socket is very strong in electrical shock preventing capability and safer in use.

The invention discloses an annular flat plate structure for cofferdam slope toe protection. A cofferdam slope comprises a slope toe, the slope toe is arranged below a horizontal plane, an annular flat plate for buffering is horizontally arranged at an arc-shaped rotating foot of the slope toe, the bottom of the annular flat plate is tightly attached to the upper surface of a riverbed, an embedded part is arranged on the inner side of the annular flat plate, the embedded part is embedded into the slope toe, the embedded part and the slope toe are of a fixed integrated structure, a water flow buffering part is arranged on the outer side of the annular flat plate, and the outer edge of the water flow buffering part and the outer edge of the slope toe are the same in structure and are both of an arc-shaped bent structure. Construction is simple, cost is low, the anti-scour effect of the slope toe at the corner of the cofferdam, especially the longitudinal cofferdam slope toe is obvious, and cofferdam accidents caused by the fact that the cofferdam slope toe is scoured are avoided; and due to the fact that the annular flat plate at the cofferdam slope toe can adjust the water flow state and smoothen the water flow, the direction of part of the water flow is adjusted, direct undercut scouring of the riverbed surface at the cofferdam slope toe is avoided, and scouring of the riverbed surface at the cofferdam slope toe is relieved.

The invention discloses a novel heat exchanger impingement baffle. The impingement baffle comprises a pipe plate. The lower end of the pipe plate is provided with a shell side cylinder, the two edgesof the inner side of the shell side cylinder are symmetrically provided with heat exchange pipes, and anti-impact check rods are symmetrically arranged on the sides, away from the shell side cylinder,of the symmetrically-arranged heat exchange pipes. An anti-impact rod is arranged on the portion, between the two symmetrically-arranged anti-impact check rods, of the lower end of the pipe plate, the lower end of the anti-impact rod is provided with an impingement baffle body, the lower end of the impingement baffle body is provided with a baffle plate, and one side of the shell side cylinder isfurther provided with a medium inlet. The novel heat exchanger impingement baffle has the advantages that after the impingement baffle is applied to a heat exchanger, fluid distribution is even, theimpingement baffle can be effectively prevented from falling off, wear and leakage of the heat exchange pipes are reduced, safe and reliable operation of the heat exchanger is guaranteed, and the service life of the heat exchanger is prolonged. The novel heat exchanger impingement baffle is simple in structure, reasonable in design and low in equipment cost and has a good anti-impact effect, and the impingement baffle does not need to be additionally welded.