84results about How to "Easy to install and replace" patented technology

The invention provides an energy dissipation and shock absorption mechanism. The energy dissipation and shock absorption mechanism comprises a metal damper, a supporting or rigid wall for arranging the damper, and a connecting device connected with a structure. Two external connecting mechanisms are arranged on the metal damper; one of the external connecting mechanisms is connected with other connecting structures on a building, and the other external connecting mechanisms is connected with the building through the supporting or rigid wall; and the connection is riveting, bolt pin connection, bolt connection or welding. The energy dissipation and shock absorption mechanism comprises the metal damper, so the compression performance of the metal is used for dissipating the energy; the hysteresis curve of the energy is saturated, namely, under the condition of very small deformation (such as small vibration), the energy dissipation and shock absorption mechanism can enter plastic energy dissipation from the full section; moreover, the required quantity of materials is low, so the energy dissipation and shock absorption mechanism is convenient to install and exchange; compared with the conventional stickness damper, the energy dissipation and shock absorption mechanism has the characteristics of long durability and maintenance freedom.

A brush-holder system for an electric motor which is the type which has a rotating commutator that is journaled in a first motor housing portion, the assembly includes a second motor housing portion configured to be matingly connected to the first motor housing portion and having at least one brush holding pocket therein. The pocket is formed by a structure of the second motor housing portion which defines a support surface on one side thereof and a bridge portion on an opposite side thereof. The system further includes an elongated brush having first and second ends, wherein the first end is configured to be coupled to a biasing member and the second end is configured to contact the motor commutator, and at least one removable brush-holder having a first open end configured to receive the brush therein and to fit in the pocket, and a second open end enabling the brush to extend outwardly therefrom to contact the motor commutator. The system also includes a biasing member coupled to the brush, and an end cap coupled to the first open end and configured to be in abutment with the biasing member to bias the brush toward the motor commutator.

The invention provides a novel energy automobile charging gun, and relates to the technical field of new energy automobiles. The new energy automobile charging gun comprises a gun body, wherein a telescopic ring is in slide connection with the inside of a left side of the gun body; a first spring is connected between a right end of the telescopic ring and an inner wall of the gun body; a chargingplug is in slide connection with the center of the left side of the gun body; a baffle plate is fixedly arranged at a right end of the charging plug; and a connecting rod is fixedly arranged at an upper end and a lower end of the right side of the baffle plate. Through adoption of the new energy automobile, automatic power outage is realized at a high temperature, and damage to the gun body and automobile caused by over high temperature of the gun head is avoided. After charging, the automobile and the charging device are in a fully-disconnected state, so that the loss of power and damage to the automobile by over voltage are reduced. Moreover, the gun head can be replaced conveniently and rapidly, so that higher practicability is achieved.

The invention aims to provide a battery fixing device for an electric automobile, which is convenient to mount and disassemble/assemble and is firm for fixation. The battery fixing device for the electric automobile comprises a battery tray, a battery press plate, a screw with thread at the top end and a nut matched with the screw; a through hole for fixing is formed on a bottom plate of the battery tray; through holes are formed on the opposite side walls of at least two sides of the battery tray; a through hole is formed on the battery press plate; the bottom end of the screw is bent to form a hook; the screw passes through the through hole on the battery press plate; the hook at the bottom end of the screw is inserted into the through holes on the side walls of the battery tray; and the top of the screw is compacted and fixed with the battery press plate through the nut. The battery fixing device of the electric automobile has simple structure and can be formed by punching through a metal plate with relatively low cost; and moreover, the battery is convenient to mount and disassemble/assemble and subject to multidirectional limit in the device, thus realizing firm fixation.

The invention discloses a compound multilayer explosion-proof device used for a viaduct pier. The compound multilayer explosion-proof device used for the viaduct pier comprises a macromolecular elastomer, a round steel pipe and a void space which are sequentially arranged outside the pier from inside to outside, wherein the macromolecular elastomer is bonded with the pier and a steel plate by virtue of glue, the round steel pipe is connected with the steel plate and the void space in a welding manner, and the void space is composed of an inner steel plate and an outer steel plate. The compound multilayer explosion-proof device used for the viaduct pier has the advantages that an energy conservation principle is utilized, devices, namely the macromolecular elastomer, the round steel pipe and the void space, are arranged at the periphery of the viaduct pier, dynamic response such as acceleration and displacement of the pier under the action of explosion in the air can be effectively reduced, pressure of shock wave is relieved, action of the pressure of the shock wave on the pier is alleviated, energy, acting on the pier, of the shock wave is absorbed by virtue of plastic deformation of the steel pipe and elastic deformation of the macromolecular elastomer, and damage of the viaduct pier under non-contact explosion and contact explosion load is reduced, so that the aim of protecting the viaduct pier is achieved.

The invention discloses a multidimensional vibration damper for a suspension bridge central buckle containing a viscoelasticity energy consumption component and metal rubber. Under the action of weak wind load or mid-small vibration, a propeller type energy consumption device moves in a cylindrical steel box under the driving of a main cable, and generates friction with a viscoelastic material in the steel box so as to reduce the influence of action on the main body structure of a suspension bridge; when the multidimensional vibration damper is under the action of strong wind load or great vibration, relatively great displacement is possible to appear in the horizontal direction, a limiting baffle is contacted with an annular rubber tie-plate on a wall of the cylindrical steel box to drive the steel box to rotate around a cuboid steel box supporting seat, at the moment, a part of the acting energy is adsorbed by the viscoelastic material between the supporting seat and angle iron, and the metal rubber, except for consuming a part of energy, can also prevent the whole central buckle structure from generating overlarge horizontal displacement, and enables the structure to restore after the load is removed. By the multidimensional vibration damper disclosed by the invention, the whole central buckle has relatively good plasticity, and damages to the main body structure of the suspension bridge are reduced.

The invention discloses a subsoiler capable of measuring the mechanical resistance of soil continuously, and aims to measure the mechanical resistance of the soil. A displacement sensor is used for measuring the tillage depth of the subsoiler and installed between a machine frame and a profiling wheel. A scraper knife of the subsoiler is hinged to a sliding block, and a hydraulic cylinder is connected with the sliding block. Under the condition that the tillage resistance is not large and the scraper knife can not be damaged, the hydraulic cylinder prevents the scraper knife from moving backwards. In the tillage process, if the scraper knife meets foreign bodies, the value of the resistance on the scraper knife exceeds the set pressure value of the hydraulic cylinder, the hydraulic cylinder contracts, and the scraper knife moves backwards and avoids the foreign bodies. The scraper knife is connected with a force sensor used for measuring the resistance of tillage.

The invention discloses a winding auxiliary device for 3D printing consumable production. The winding auxiliary device includes: a support assembly that comprises a base, a first supporting frame, a second supporting frame, a third supporting frame and a fourth supporting frame; a guide assembly that comprises two groups of guide rollers and two groups of lead rollers; a sweeping assembly that comprises an upper brush, a lower brush, a dust collector, a main pipe, and a branch pipe; a winding assembly that comprises a gear motor, two sets of three-jaw chucks, a winding roller, an electric pushrod, and a limiting ring; and an extrusion assembly that comprises two sets of sliding grooves, two sets of sliding blocks, two sets of springs and an extrusion roller. Overall supporting is achievedthrough the support assembly, a wire rod is guided through the two sets of guide rollers and the two sets of lead rollers, the surface side of the passing wire rod is scraped and brushed through thesweeping assembly to remove dust, winding is achieved through the winding assembly, the wire rod is extruded through the extrusion assembly, and winding is more compact.

The invention discloses a civil aviation air traffic control monitoring data treatment device. The data treatment device comprises a supporting seat, a lifting seat and a monitoring device, wherein the lifting seat can be slidably arranged in the supporting seat in an up-and-down mode, the monitoring device can be rotationally arranged at the top of the lifting seat. According to the data treatment device, the angle of shooting and monitoring of a monitoring camera can be automatically controlled and adjusted so that all-directional real-time monitoring and shooting can be achieved, the lifting seat can also be contracted in a lifting sliding groove, the monitoring camera is stored in a containing cavity, then a good protection effect on the monitoring camera is achieved, the height of shooting and monitoring of the monitoring camera can be adjusted, the installation and replacement of two monitoring cameras can be controlled through one motor, the installation and replacement operation is simple and convenient, the overall structure is safe and stable, and the operation is convenient and rapid.

The invention discloses an error-prevention assembly mechanism for LCD (liquid crystal screen) screen, wherein the LCD screen comprises a filter, a light guide plate, a reflecting plate and a screen shell, the error-prevention assembly mechanism is provided with a detection bracket, the error-prevention assembly mechanism is also provided with three detecting rods, respectively detecting rod NO. one, two, and three, which are respectively inserted into the guide holes of detection brackets, three micro switches are set on the sliding blocks corresponding to the ends of the detecting rods, three adjusting screws are locked on the detection bracket connection through locking nuts, and are respectively screwed into sliding blocks through the guide holes of the detection brackets. By adopting the technical scheme, any kind of omissions of the reflective films, light guide plates, filters can be measured out only by the three adjusting screws; at the same time wrong order of the light guide plates and filters can be measured out; the micro switch detection structure is characterized by smaller volume compared with a displacement sensor, convenient installation and replacement, low cost, simple structure and convenient adjustment.

The invention relates to the field of steel pipe nondestructive testing devices, in particular to a steel pipe nondestructive testing fixing device, which comprises a box body, a supporting structure,a clamping structure, a folding structure, a positioning structure, a limiting structure and a fixing structure. The supporting structure is mounted at the bottom end of the box body to achieve the effect of supporting the box body when the box body is used for nondestructive testing; the box body can be better attached to the surface of the steel pipe, so that movement of the box body is facilitated, and the detection precision is improved; the clamping structure is mounted at the bottom end of the box body in a matched manner, so that the detection head can be conveniently mounted and replaced; by means of folding structure, the assembly for placing the detector can be folded and stored, so that the device is convenient to use; the folding structure is simple in structure and convenientto use, can play a supporting role in use, can be prevented from automatically falling back after being lifted by being matched with the arrangement of the positioning structure, thus ensuring the stability of placing the detector. By means of the limiting structure, the arrangement assembly for placing the detector can be conveniently supported, retracted and stored.

The invention discloses a fuse protector type disconnecting switch carried with a signaling device in a hanging mode. The fuse protector type disconnecting switch comprises a fuse protector type disconnecting switch body. The fuse protector type disconnecting switch body comprises a base, a handle and a fuse protector with an impactor. The back end of a handle is movably connected with the back end of the base, and the fuse protector is hung on the inner side face of the handle. The signaling device is further connected to the outside of one lateral plate at the front portion of the base, and an ejecting rod connected with the signaling device and arranged on a popup route of the impactor on the fuse protector is further arranged in the base. When the base is closed up through the handle, the signaling device is triggered to send a closing signal. When the fuse protector is fused, the impactor on the fuse protector triggers the ejecting rod to enable the signaling device to send a fusing signal. The fuse protector type disconnecting switch carried with the signaling device in the hanging mode can achieve connection and disconnection through the same signaling device and monitoring of an operation state of the fuse protector, so that the fuse protector type disconnecting switch body is simple in structure. The fuse protector type disconnecting switch can be combined into a double-pole disconnecting switch.

The invention relates to a natural environment simulator capable of producing fog by ultrasonic wave, belonging to the technical field of high-voltage line insulator performance testing equipment. The natural environment simulator comprises an artificial fog chamber; a wall feed-through sleeve is arranged at one side of the artificial fog chamber in a matching way; the bottom of the artificial fog chamber is provided with an assembling box in a matching way; the assembling box is internally provided with a fog generator and a fan in a matching way; the fog generator and the fan are connected with an external power line; the external power line is used for supplying power; a hook is arranged on the top of the artificial fog chamber in a matching way, and is used for fixing an insulator to be tested; and the fog generator is an ultrasonic fog generator. As the ultrasonic fog generator and the fan are used together, the fog inlet quantity of the artificial fog chamber can be effectively controlled, and the natural environment needed by a laboratory can be simulated; furthermore, the external screw-type wall feed-through sleeve is arranged at one side of the artificial fog chamber in a matching way, so that the creepage distance can be prolonged, the current is prevented from being in ground connection along a barrel wall, and the personal safety of workers can be improved; and the natural environment simulator is simple in structure, small in size, strong in operability, good in simulation fidelity and easy to move, and can be popularized, applied and implemented.

The invention provides a carbon heating structure having a flange type structure and a heating device comprising the carbon heating structure. More than one carbon heating structure is arranged at an upper end of a storage space of the heating device needing to generate a high temperature in a horizontal or a vertical way. When the carbon heating structure is arranged in the vertical way, the flange is fixed on a fixing plate, thus the carbon heating structure can be dismounted from the fixing plate conveniently, a power supply piece used for heating and supplying power to the carbon heating structure connected with the flange is only arranged at one end; when the carbon heating structure is arranged in the horizontal way, the flange is detachably and horizontally fixed in a fixing piece. The carbon heating structure is clubbed, one end of a sealed tubular space is provided with a carbon fiber heating element and an inner quartz tube inserted in the middle of the carbon fiber, the other end is provided with a flange which can be detachable from the fixing plate, and a vacuum state in the quartz tube is kept. The invention provides the power supply piece used for the carbon heating structure to generate the heat only at one end, thus the carbon heating structure has the advantages of wide application scope, convenient installation and replacement.

An electrical receptacle and junction box apparatus including a stud mounted electrical junction box with stud-attaching screw shoulders having wire apertures with retaining screws and retaining screw fittings for each wire aperture for receiving electrical wiring without wrapping the wiring around screws, a ground strip, a slide-in receptacle or slide-in switch received in the electrical junction box, an electrical connection between the electrical junction box and the slide-in receptacle or slide-in switch unit with elongated prongs, slotted terminals with slot apertures to allow the slide-in receptacle or slide-in switch to move in and out of the electrical junction box and non-conductive bases for embedding the terminals, the ground strip and the retaining screw fittings.

The invention discloses a replaceable buffer supporting leg of an unmanned aerial vehicle. The replaceable buffer supporting leg of the unmanned aerial vehicle comprises the unmanned aerial vehicle, wherein the bottom of the unmanned aerial vehicle is fixedly connected with an L-shaped plate; the L-shaped plate is provided with a lateral plate; the bottom of the lateral plate is hinged to a bufferrod; the bottom of the buffer rod is hinged to a movement block; a bottom plate is arranged below the buffer rod; the movement block is in sliding connection with the bottom plate; the movement blockis positioned on the top of the bottom plate; the bottom of the lateral plate is fixedly connected with a press cake; the buffer rod is hinged to an inclined rod; the bottom of a movement groove is provided with two symmetric movement grooves; the movement groove is provided with a guide rod in a sliding way; the guide rod is provided with a regulation block in a sliding way; one end of the inclined rod is hinged to the regulation block; the regulation block and the inner wall of the movement groove are in sliding connection; the guide rod is sheathed with a spring. According to the replaceable buffer supporting leg of the unmanned aerial vehicle, an unmanned aerial vehicle supporting mechanism is convenient to replace and install, and the supporting mechanism is convenient to check and repair. Meanwhile, through a plurality of buffer mechanisms, vibration generated when the unmanned aerial vehicle lands is effectively alleviated, the vibration reduction performance of the unmanned aerial vehicle is improved, and the replaceable buffer supporting leg is easy to be popularized.

A safe drilling equipment comprises a fuselage, a drill bit and a fixing device, the fixing device comprises a vertical rod fixedly arranged on the lower end face of the fuselage, and the vertical rod can be slid left and right on a horizontal column, A mounting plate is provided on the left end surface of the horizontal column, a accommodating groove is provided in the fuselage, a sliding groove is provided in the fuselage at the left end of the accommodating groove, and a sliding groove is provided in the fuselage at the right end of the accommodating groove There is a middle groove, a first rotating shaft is rotatably installed in the middle groove through a first bearing, and a second rotating shaft is rotatably installed in the sliding groove through a second bearing. The device of the present invention has a simple structure and can be used Convenience, high safety and stable operation.

The invention relates to a two-slit interference and single slit diffraction experimental instrument which comprises a horizontal plate. The two-slit interference and single slit diffraction experimental instrument is characterized in that a supporting rod is fixedly arranged on one side of the middle of a first supporting column, a laser is horizontally and fixedly arranged at the top end of thesupporting rod, a first sleeve is horizontally and fixedly arranged at the top end of the first supporting column, the laser and the first sleeve are located on a same horizontal line, a second sleeveis arranged out of the end, far away from the laser, of the first sleeve in a sleeving manner, a gap head is arranged at the end, far away from the first sleeve, of the second sleeve in a sleeving manner, and sliding blocks are fixedly arranged at the bottoms of a second supporting column and a third supporting column. By arranging the adjusting supporting columns and a horizontal tester, the horizontal degree of the horizontal plate is adjusted conveniently, so that the experimental result is more accurate. By arranging a brightness adjustor, the brightness of a light source sent by the laser can be adjusted. By arranging a first fastening screw, the gap head is replaced and mounted conveniently. By arranging the sliding blocks, the positions of a light screen and the gap head are adjusted conveniently.

An air exchanging device according to the invention is mounted to a wall. An inner side of the wall is the indoor space, and an outer side of the wall is the outdoor space. The wall has an installation hole. The air exchanging device includes a housing, a first fan unit and a second fan unit. The housing has a compartment. The housing has a first through-hole, a second through-hole and a third through-hole. The first fan unit is received in the compartment and includes a first air inlet intercommunicating with the second through-hole, and a first air outlet intercommunicating with the first through-hole. The second fan unit is received in the compartment. The second fan unit includes a second air inlet intercommunicating with the third through-hole, and a second air outlet intercommunicating with the second through-hole.

The invention relates to the field of manufacturing of film, in particular to a plastic film coiling device convenient to install and replace. The plastic film coiling device convenient to install and replace comprises a coiling device, a paper tube supply box, a finished product collecting box and a base, wherein the coiling device is fixed on the base and comprises a coiling roller, fixing frames, detachment motors, a separation screw rod and a separation motor; the two ends of the coiling roller are rotationally connected with the fixing frames; the coiling roller is divided into two halves from the middle, and the two halves of the coiling roller are connected through threads in the middle; the detachment motors are connected with the two ends of the coiling rollers through belts and drive the rotation of the coiling rollers to control detachment and combination of the coiling roller; and the separation screw rod penetrates through the lower portion of the fixing frame, and the two ends of the separation screw rod are provided with threads in opposite screw directions. Through automatic control with an upper computer, the plastic film coiling device convenient to install and replace realizes the function of rapidly taking paper tubes of plastic film coils, avoids the situation that the film coils are too large or too small, and improves the quality of products.

The invention discloses a floating box type self-floating and flood-proof parking space, which comprises a foundation pit arranged at the parking space, the foundation pit is connected with a drainage pipe, and an anti-flooding floating device and a limit device are installed in the foundation pit; the anti-flooding floating The device is fitted and installed in the foundation pit and can float along the foundation pit; one end of the limit device is fixedly connected to the foundation pit, and the other end is connected to the anti-flooding floating device; a boss for supporting the anti-flooding floating device is arranged in the foundation pit. The invention has a simple structure and is convenient for installation and replacement. It realizes the function of "controlling rain with rain" by digging a foundation pit in a traditional parking space and installing an anti-flooding floating device in the foundation pit, so that parking on the anti-flooding floating device The vehicle can be lifted and lowered according to the degree of waterlogging to prevent the vehicle from being submerged by rain.

An intelligent lock display device relates to a display device. A top plate is arranged at the upper end of a supporting rod, a bottom plate is arranged at the lower part of the supporting rod, a partition plate is arranged on the supporting rod between the top plate and the bottom plate, and the space between the top plate and the bottom plate is divided into an upper display cavity and a lower display cavity by the partition plate. The upper section, located between the top plate and the partition plate, of the supporting rod is of a hollow structure, a plurality of vertical plates are arranged in the upper section of the supporting rod and divide an inner cavity of the upper section of the supporting rod into a plurality of scroll containing grooves, and promotion pages are arranged inthe scroll containing grooves. According to the invention, intelligent locks with different specifications can be rapidly and effectively installed and displayed, people can conveniently perform operation demonstration, the promotion and display effects on the intelligent locks are greatly improved, and great help is provided for people to understand and master the use of the intelligent locks.

The invention discloses a sealing device for ultraviolet sterilization. The sealing device comprises an ultraviolet fluorescent tube and ultraviolet fluorescent tube installation seats disposed at two ends of the fluorescent tube. A quartz socket tube sleeves the ultraviolet fluorescent tube; and the quartz socket tube is fixed in the installation seats through fastening nuts. Quartz socket tube sealing gaskets are disposed between the quartz socket tube and the installation seats; sleeve type ceramic linings sleeve two ends of the ultraviolet fluorescent tube; the parts outside the ceramic linings are sealed by press covers; the press covers are fixed to the fastening nuts through bolts or screws; and openings at the middle of the press covers are provided with cable glands. The sealing device for ultraviolet sterilization is simple in structure and convenient for installation and replacement, and can realize replacement of a cleaning machine without taking the whole ultraviolet sterilization device out. Even if the quartz socket tube is broken, water can not flow out from the sealing device to destroy an electric system, thereby guaranteeing security of the whole system.

The invention provides a vibration-damping band for substituting a speed hump to reduce floor slab vibration. The speed hump is mounted on the upper surface of a floor slab of a building structure, and not only plays a role of slowing down a vehicle, but also can reduce a load of the vehicle on the floor slab in the running process; the speed hump comprises an upper steel plate layer, a lower steel plate layer, and a middle soft rubber layer with a buffer effect; the integral height of the speed hump is smaller than that of a commonly-used speed hump; the vibration-damping effect of the speed hump is mainly embodied as follows: the rubber layer with relatively small elastic modulus has relatively great shearing deformation under the collision of the fast running vehicle and thus a part of energy is dissipated; the speed hump of which the upper surface is relatively flat effectively inhibits a galloping phenomenon when the fast running vehicle runs through the speed hump; the speed hump is relatively wide, so that after the fast running vehicle runs through the speed hump and jumps slightly, the fast running vehicle still falls onto the speed hump with relatively small vertical rigidity so as to weaken transmission of a vertical impact load to the ground surface or the floor surface.

The invention relates to a guardrail, in particular a guardrail bar with a solar cell panel. The guardrail bar is provided with a bar body that is provided with a pair of fold edges in the front and an insert. The insert consists of two side faces and the solar cell panel; each of the two side faces is provided with a clamp slot, and the fold edges are disposed in the clamp slots. The guardrail bar with the solar cell panel can utilize a solar source sufficiently and convert the solar power into electric power as a power supply for lamps on guardrail vertical posts. The solar cell panel is mounted on the insert of the guardrail, and accordingly is convenient to mount and change. Both the bar body and the side faces of the insert can be coated with fluorescent powder, and light emitted by the fluorescent powder has a warning effect when solar cell panel of the guardrail is low in power, so that pedestrians or vehicles are prevented from colliding with the guardrail. The guardrail bar with the solar cell panel has the advantages of skillful design, energy-saving and environment-friendly performance, mounting convenience, high material utilization rate and the like.

The invention discloses a self-adjusting opening and closing hot cover and a full-automatic gene amplification instrument using the hot cover. An existing gene amplification instrument adopts a manualuncovering mode, and the provided pressure varies from person to person, so that the gene amplification effect is influenced. The hot cover comprises a driving mechanism and a hot cover module, wherein the hot cover module comprises a hollow hinged frame, a supporting block, a guide sleeve, a sliding rod, a movable pressing plate, coil springs, a hot cover shell and an annular rubber pad. According to the invention, in a closing process of the hot cover shell, a crank and a connecting rod are driven through a stepping motor, then the connecting rod drives the movable pressing plate, finally the closing process is achieved through acting force of the springs, and it is guaranteed that constant pressing force is kept in the closing process of the hot cover shell under the action of the springs; and the coil springs wound at the two ends can provide constant acting force for the movable pressing plate, so that it is guaranteed that the pressing force of the movable pressing plate on a PCR tube is constant, PCR tubes of 0.1 ml and 0.2 ml can be adapted at the same time, the operation is automatically completed, and after the pressing force of the movable pressing plate on the PCR tubeis pre-adjusted, PCR tube pressing cracking caused by overpressure can be avoided.

The invention relates to the field of power supply and distribution, in particular to a data center busbar system. The data center busbar system comprises a start end box, a power supply system main busbar, a plurality of jack boxes, an equipment cabinet and a main-control box, wherein the start end box is used for original power supply of the system; the power supply system main busbar is connected with the start end box; the multiple jack boxes are connected to the power supply system main busbar; the upper portion of the equipment cabinet is provided with PDU plug devices, and the PDU plug devices are connected to the jack boxes in a plug mode; the data in the jack boxes are transmitted to the main-control box in a wired or wireless mode. Compared with the prior art, the plug positions of the jack boxes of the data center busbar system can be selected at will, connection is reliable, the jack boxes can be used after being plugged, the equipment cabinet is internally provided with the PDU plug devices to supply power to all units in the equipment cabinet, and power is taken by directly plugging the upper ends of all the units into plugs below the jack boxes; safety of a power distribution system can be protected and controlled, and real-time monitoring and data acquisition can be further conducted on the power distribution system.

The invention discloses a tire valve cap and a tire condition monitoring device and system. The tire valve cap comprises a battery chamber arranged in a valve cap, and an electrode contact is arranged in the battery chamber. The tire condition monitoring device comprises a tire valve cap, a battery arranged outside a tire, a metal conductor and a condition-detecting main control circuit arranged in the tire. The condition-detecting main control circuit is electrically connected with the battery through the metal conductor in the tire valve cap and the electrode contact in the battery chamber in sequence. The tire condition monitoring system comprises a tire condition monitoring device. The tire valve cap and tire condition monitoring device and system, provided by the invention, overcome the problems of the conventional tire condition monitoring system, such as difficulty in installation, poor maintainability, poor reliability and difficulty in battery change, are simple in structure and low in cost, and can bring good economic and social benefits. The tire valve cap and tire condition monitoring device and system, provided by the invention, can be widely applied in the automobile tire condition monitoring field.

The invention discloses an anti-theft handbag, which comprises a shell. A battery is inserted into a battery slot; a battery shell presses a block to move downwards; an insert block is no longer blocked by the block, and the insert block is plugged-in a slot to lock the battery. When the battery needs to replace, a pressure lever is pressed down through a needle to let the pressure lever cooperatewith the gap; with the pressure lever continuously moving downwards, the insert block is pushed to move towards the left side, the block pushes the battery shell and the battery to move upwards, andthen the battery can be taken out. Since the product has a lateral chain belt and a bottom chain belt, the shell can be prevented from being cut to take out objects therein. Through fingerprint unblocking, the product has strong confidentiality, and installation and replacement of the battery are convenient.

The invention discloses a heavy gravity loading block. The loading block comprises a lifting and installing part used for installing and lifting the heavy gravity loading block; one or a plurality of loading parts used for providing gravity on the lifting and installing part; one or a plurality of sub loading blocks placed on the loading part; the lifting and installing part is provided with a circular lifting cake and a U-shaped lifting buckle, wherein the loading parts are uniformly distributed and arranged on the lifting cake so that the gravity of the lifting cake is located in a center of a circle, the two ends of the lifting buckle are provided with threads, the lifting cake is provided with two lifting holes symmetric to the center of the circle and the two ends of the lifting buckle passes through the lifting holes and are limited by nuts. The heavy gravity loading block as a combined structure, is convenient to install and operate and is provided with adjustability, the frame structure of the heavy gravity loading block can bear higher weight, and the integral structure has good stability, and can meet actual operating requirements.