4945 results about "Internal connection" patented technology

To provide a semiconductor package containing an insulating material.SOLUTION: A semiconductor package 1000 contains: a re-wiring structure body 300 that contains a re-wiring layer containing copper (Cu) and an insulation layer 310 surrounding the re-wiring layer; a semiconductor chip 100 that is mounted onto the re-wiring structure body, and contains a plurality of chip-coupling members 130; an internal coupling terminal 134 that is arranged between the re-wiring structure body and the semiconductor chip, and electrically connects the re-wiring layer and a connection pad; an external coupling terminal 600 that is adhered to a lower side of the re-wiring structure body, and is electrically connected to the re-wiring layer; and a sealing member 250 that surrounds the semiconductor chip and the internal coupling terminal on the re-wiring structure body. The insulation layer is made of an insulating material, where K satisfies 20 or more in a TC index.SELECTED DRAWING: Figure 1

The invention relates to the technical field of flange machining and discloses flange machining welding equipment which comprises a base, the outer side wall of the base is rotationally sleeved with a ring body, a support is arranged on one side of the ring body, a mechanical arm is installed on the upper portion of the support, a welding mechanism is arranged at one end of the mechanical arm, and a longitudinal positioning mechanism is arranged on the upper portion of the base. A transverse positioning mechanism is arranged in the base, the longitudinal positioning mechanism comprises a limiting cylinder arranged in the center of the upper portion of the base, a rotary knob is inserted into the upper end of the limiting cylinder in a longitudinally rotating and sliding mode, and the lower end of the rotary knob is located in the limiting cylinder and connected with a first screw rod; and the lower end of the first screw rod longitudinally rotates, slidably penetrates through the upper part of the base and is internally connected with a clamping gear. The flange machining and welding equipment can replace manual work to achieve automatic welding work, and before welding, steel pipes and flange plates of different sizes can be positioned by arranging the longitudinal positioning mechanism and the transverse positioning mechanism, so that the welding stability is guaranteed.

The invention relates to the technical field of parameter simulation, in particular to a parameterized simulation model design method based on a standard part structure. The method comprises the following steps: collecting bolt connection data of standard components in the wind generating set; blade surface vibration feature information is extracted according to the standard component bolt connection data; acquiring stress concentration distribution data at the joint based on the blade surface vibration characteristic information; calculating a local deformation accumulated value of the standard part according to the stress concentration distribution data at the joint; measuring the friction coefficient variation trend of the contact surface based on the local deformation accumulated value of the standard component; deducing pre-tightening force attenuation characteristics according to the change trend of the friction coefficient of the contact surface; and constructing a standard part fatigue damage prediction model based on the pre-tightening force attenuation characteristics. According to the method, the vibration characteristics of the blade surface are collected, the stress concentration distribution at the bolt connection position is indirectly extracted, and the bottleneck that the internal connection state is difficult to directly sense is broken through.

The invention discloses an integrated control mode flexible connection switching method applied to a DFIG (Distributed Feedback Induction Generator). The method comprises the following steps of: ensuring that the current limiting performance of a current limiting module can be exerted to the greatest extent in each implementation stage of a control strategy by using the current limiting module; a resistance-capacitance crowbar is introduced to realize current limiting and reactive compensation, switching impact limiting of a control mode is carried out, an input and removal reference mechanism matched with control switching is designed, and then key problems encountered by crowbar use are effectively solved; a state follow-up module is integrated in a DFIG converter control framework, parameter synchronization in the control mode switching process is ensured, the system is effectively prevented from being subjected to great switching impact, and smooth transition of the control mode is further achieved. In the state follow-up period, a network construction control strategy adopted by the RSC of the DFIG provides a reactive compensation reference for the improvement of the GSC, and it is ensured that in the switching process, a tight internal relation is established between different control modes instead of simple time sequence splicing.

The invention relates to the technical field of stainless steel welded pipe solid solution, in particular to stainless steel welded pipe online bright solid solution equipment which comprises a base, a motor A is fixedly connected to one end of the base, a reciprocating lead screw is connected to the output end of the motor A, a first support is arranged on the outer side of the reciprocating lead screw, and a movable ring is connected to the interior of the first support. And a bevel gear is arranged on one side of the movable ring, and a gear A is arranged on one side of the bevel gear. After the stainless steel pipe is polished, the stainless steel pipe can gradually move along with movement of the first support, meanwhile, air can be released upwards after entering the interior of the spray head, and therefore the outer wall of the polished stainless steel pipe is cleaned; and meanwhile, after welding is completed, the spray head can cool the welded position at the same time, and the grinding roller can grind the welded position, so that the welded position is smoother, and the stress generated by welding is also reduced.

The invention relates to a vibrator array for generating tactile feedback and audio frequency, a method and application thereof, the vibrator array comprises an array main body part, the array main body part comprises at least two vibrators, and each vibrator can do reciprocating mechanical motion in one direction to generate vibration; each internal and external connection elastic sheet is connected with the corresponding vibrator and comprises a flat sheet body, an internal connection rib and an external connection rib; the supporting structural member is used for supporting the vibrator and the internal and external connecting elastic sheets; the signal transmission processing part is electrically connected with the vibrator; wherein the vibrator simultaneously realizes massage, vibration tactile feedback and audio playing functions through vibration, and the audio playing function is realized through two modes of air conduction and bone conduction; the integration of massage, vibration tactile feedback and audio playing functions is realized through the same vibrator unit; the vibrator array can generate clear vibration direction and directivity and provide more accurate tactile feedback.

The invention discloses a burr polishing device for a high-strength automobile structural member, which belongs to the technical field of mechanical polishing and comprises a workbench and a workpiece, a machining table is arranged on the workbench, a motor and a liquid pipe are connected in the machining table, the output end of the motor is connected with a polishing head, and the burr polishing device further comprises a clamping mechanism and a detection mechanism which are arranged at the bottom of the machining table. In the polishing process, vibration transmission between the machining table and the machined part can be attenuated, chatter marks are reduced, and the surface smoothness is improved through elastic clamping of the second sliding block, the first sliding block and the third sliding block on the machined part, in the polishing process, the protruding degree of a polishing area is pre-detected through the detection block, and when the polishing head passes through the detection area subsequently, the polishing efficiency is improved. The rotating speed of the grinding head and the liquid spraying amount of the liquid pipe are adjusted through the transmission rod, self-adaptive automatic adjustment of the grinding head and the liquid pipe is achieved according to the pre-detection result of the machined part, and the grinding efficiency and the grinding work quality are guaranteed.

The invention relates to the technical field of pressure release valves, in particular to a fire-fighting pipeline linear adjusting pressure release valve and a method, the fire-fighting pipeline linear adjusting pressure release valve comprises a first valve body, and further comprises a third valve body, a second valve body, a third valve core assembly, a second valve core assembly and a third valve core assembly, the second valve body is fixedly connected to the top of the third valve body, and a second valve element assembly is connected to the interior of the second valve body; and the pressure regulating mechanism comprises a pressure assembly communicating with the water outlet end of the first valve body, and the top of the second valve body is connected with an elastic assembly. By arranging the pressure adjusting mechanism, a traditional single spring adjusting mode is broken through, the water pressure in the sealing cover and the mechanical pressure of the adjusting screw rod and the first spring are superposed to form a composite pressure relief threshold value, and a method for linearly and finely adjusting the pressure relief threshold value is added; incompressibility of a water medium is utilized, instantaneous pressure fluctuation is absorbed, fatigue failure of the spring under high-frequency impact is effectively avoided, and the device is suitable for starting and stopping of a fire pump or scenes where water hammers frequently occur.

A pivoting arrangement for a helmet's protective visor, wherein a helmet body (1) is provided on both sides with at least one locking slot (11) into which a connecting seat (2) is movably inserted, wherein the connecting seat (2) has two connecting pins (21) on which a first connecting arm (3) and a second connecting arm (4) are pivotably mounted, and wherein a first engagement projection (31) and a second engagement projection (41) are arranged at one end of the first connecting arm (3) and the second connecting arm (4), and wherein the first engagement projection (31) and the second engagement projection (41) are rotatably connected to a protective visor (5), and wherein the first connecting arm (3) is provided on its inner side at the point in contact with the connecting pin (21) with a running groove (6) in which a spring detent (22) of the connecting seat (2) moves, and wherein the running groove (6) forms a first track (61),a second track (62) adjacent to the first track (61) and a guide wall (63) located between the first and second tracks (61, 62), wherein the first track (61) and the second track (62) overlap each other at their ends, such that the second track (62) is lower than the first track (61), and wherein one end of the guide wall (63) extends into the first track (61) so that the first track (61) forms a curve turning section (611), and wherein a concave curve groove (631) is formed at an end of the guide wall (63) corresponding to the curve turning section (611), and wherein an inclined section (612) extends from the end of the curve turning section (611) into the second track (62), and wherein a support wall (64) is arranged on the outside of the first rail (61), extending towards the first track (61) and into the outside of the second track (62). transitionsand wherein a stop projection (641) embedded in the first track (61) is arranged at a location on the support wall (64) corresponding to the concave arc groove (631), which is used to press the spring detent (22) into the concave arc groove (631).

The invention discloses a rotary sealing assembly, a hub bearing assembly, a tire and a vehicle. The rotary sealing assembly comprises a rotary ring, a first sealing ring and a second sealing ring, the fixed ring is coaxially opposite to the rotating ring and is provided with a second air channel; the sealing piece comprises an inner sealing ring and an outer sealing ring which are arranged between the rotating ring and the fixed ring, the rotating ring, the fixed ring, the inner sealing ring and the outer sealing ring define an air cavity, and the first air channel and the second air channel are communicated through the air cavity. According to the technical scheme, when the rotating ring and the wheel rotate synchronously, the first air channel in the rotating ring can be connected with the interior of a tire, the second air channel in the fixed ring can be connected with an air source, the sealing piece can form a closed air cavity between the first air channel and the second air channel, and the air cavity is simple in structure, convenient to manufacture and capable of providing good air tightness; and it is guaranteed that inflation and deflation adjustment operation in the tire is stable and reliable when the wheel rotates.

The invention discloses a low-repetition-frequency spiral microcavity structure and a design method, and belongs to the field of silicon-based integrated photon chips. The low-repetition-frequency spiral microcavity structure comprises a first spiral bent waveguide, a second spiral bent waveguide, an internal connection bent waveguide, an external connection bent waveguide and a bus waveguide. The curvature radius of each point of the internal connection bending waveguide changes along with the length and meets the Euler spiral equation, and the internal connection bending waveguide is used for connecting the starting points of the first spiral bending waveguide and the second spiral bending waveguide. The external connection bending waveguide is used for connecting the end points of the first spiral bending waveguide and the second spiral bending waveguide. The first spiral bent waveguide, the second spiral bent waveguide, the internal connection bent waveguide and the external connection bent waveguide form a closed spiral annular waveguide. A light beam transmitted in the bus waveguide is coupled into the spiral annular waveguide. The invention further discloses a design method of the low-repetition-frequency spiral microcavity structure. According to the invention, loss caused by high-order mode crosstalk and mode mismatch can be reduced, and the area utilization rate of a chip is improved.

An electrospinning device comprising a spinning mechanism (1) and a casing (2) attached to the outside of the spinning mechanism (1), characterized in that a heating mechanism is arranged outside the casing (2), the heating mechanism comprises a connecting block (3), the body of the connecting block (3) is provided with a continuous main channel (4), the outer surface of the connecting block (3) is provided with an auxiliary channel (5), the interior of the auxiliary channel (5) is connected to the interior of the main channel (4), the interior of the main channel (4) is connected to a heat pipe (6), the outer surface of the heat pipe (6) penetrates the body of the casing (2) and is firmly connected to it, a reversing component (7) is arranged inside the auxiliary channel (5), an air intake pipe (8) is arranged outside the connecting block (3), and an automatic control component (9) is arranged outside the air intake pipe (8).one end of the air intake pipe (8) is connected to a heat protection hose (10), the inside of the heat protection hose (10) is connected to the inside of the auxiliary duct (5), and the inside of the heat pipe (6) is firmly connected to a fan heater (11); when air flows in the main duct (4), the sealing plates (72) in the reversing component (7) are stacked on top of each other to seal the auxiliary duct (5), and at the same time the stop plate (710) shields the main duct by vacuum extraction, and during the movement of the stop plate (710) the sealing plates (72) are rotated and not stacked on top of each other; The heat sensor plate (94) in the automatic control component (9) detects the temperature at the nozzle position, thereby controlling the fan power to control the wind speed, and simultaneously controls the expansion and contraction of the gas bag (910) to control the distance between one end of the air intake pipe and the nozzle position.which ensures the quality of the spin forming process.

The utility model discloses a group control cabinet for a refrigerating machine room, which comprises a cabinet body, and the front side of the cabinet body is connected with a cabinet door through a hinge; the moving plate is mounted on the lower side of the interior of the cabinet body, a mounting frame is fixedly mounted on the upper side of the moving plate, a fixed plate is fixedly connected to the inner side of the mounting frame, and a placement plate is connected to the middle side of the mounting frame; the cooling liquid pipe is installed on the inner side of the rear end of the cabinet body, the right side of the interior of the cabinet body is connected with a heat dissipation structure, the upper surface of the cabinet body is provided with a heat dissipation opening, the interior of the heat dissipation opening is connected with a second filter screen, a fixing block is fixedly installed on the outer side of the upper end of the cabinet body, and the interior of the fixing block is connected with an installation block. A rainproof plate is fixedly mounted on the outer side of the upper end of the mounting block, and a fixing rod is connected to the outer side of the lower end of the mounting block. According to the group control cabinet of the refrigerating machine room, heat dissipation of the control cabinet is facilitated, electrical equipment can be conveniently installed, and rain prevention of the control cabinet is facilitated.

A valve structure, a bottle cap, and a bottle are provided, relating to the technical field of bottles. The valve structure includes a rigid connecting portion, a flexible valve body, and a connecting part. The rigid connecting portion has a liquid flow channel, and the liquid flow channel axially penetrates through the rigid connecting portion. The flexible valve body is located inside the liquid flow channel and connected to the rigid connecting portion, a valve opening is arranged at a middle of the flexible valve body, and the flexible valve body is configured to be deformed under pressure to open the valve opening. The connecting part is arranged on an outer wall of the rigid connecting portion, and the rigid connecting portion is detachably connected to an inner wall of a water outlet of a cap body by the connecting part.

The utility model relates to the technical field of filling machinery, and discloses a filling device which comprises a rack and a plurality of bottle clamping devices annularly distributed on the rack, each bottle clamping device comprises a weighing assembly and a bottle clamping assembly connected with the weighing assembly, and a closed electric box is arranged on the rack. The wiring end of each weighing assembly is connected with the interior of the electric box through a wire, the wiring end of each weighing assembly is provided with an isolation seat, and the outer side of each wire is provided with an isolation sealing element used for blocking the external environment at the position between the isolation seat and the electric box. The utility model has the beneficial effects that the whole machine can be conveniently and comprehensively flushed, and the use is more sanitary.

The utility model provides a casting surface burr removing device, and relates to the technical field of burr removing devices.The casting surface burr removing device comprises a removing device body and a sliding box, and the removing device body is used for removing burrs; the sliding box is arranged on one side of the removing device body, a sliding column box is arranged on one side of the removing device body, a sliding groove is formed in the sliding box, a sliding column is fixedly connected to the interior of the sliding groove, a rotating motor is connected to the interior of a sliding plate, and a polishing brush is arranged at one end of the rotating motor. According to the technical scheme, a sliding plate moves downwards to drive an internal rotating motor to move downwards, the rotating motor moves downwards to drive a polishing brush at one end to move downwards, and when the polishing brush moves downwards to enter the circular tube type casting, the rotating motor is started to drive the polishing brush to rotate; and the grinding brush rotates to grind and remove burrs in the circular tube type casting, manual grinding of workers is not needed in the grinding process, and the efficiency is higher.

The invention relates to the technical field of pipeline machining, in particular to a hydraulic engineering pipeline cutting and welding integrated device which comprises a mounting base, two clamping seats are arranged at the top of the mounting base, circular through grooves are formed in the clamping seats, and clamping and fixing mechanisms are connected into the circular through grooves. An opposite moving mechanism is connected between the two clamping seats, two fixing frames are fixedly connected to the top of the mounting base, and a cutting machine is arranged in each fixing frame; the distance between the welding gun and the pipeline is kept synchronous all the time under the action of the elastic receding mechanism, and when the pipeline is subjected to slope cutting and the cutting face is oval, the welding gun can still keep the same moving distance under the oval moving track, so that the welding effect of the pipeline is improved, and the welding efficiency is improved. And the welding difficulty caused by the change of the pipeline cutting angle is reduced.

The invention provides a cultural creative design assisting method and system based on element fusion. Belongs to the technical field of creative design. The method comprises the steps that design elements are acquired and classified; on the basis of a deep learning algorithm, a semantic network between elements is constructed, the semantic network is converted into a low-dimensional vector space through a network embedding technology, and user preference, emotional tendency and future trend are analyzed in combination with social media data; and generating a fusion scheme, and carrying out continuous iterative optimization on the design. The semantic relation between the design elements is analyzed, so that the internal relation between the design elements can be deeply understood; through a complex network theory, a language network model between design elements is constructed, the relationship between different elements can be visualized, and high efficiency and systematicness of design decision are facilitated.

The utility model relates to the technical field of cold energy recovery equipment, and provides an anti-leakage cold energy recovery device for dry ice production tail gas, which comprises a dry ice production box, a recovery assembly is arranged on one side of the dry ice production box, and the recovery assembly comprises a recovery box, a recovery cavity, a communicating pipe, a flow guide pipe, a turbulent flow structure and a steering pipe. According to the utility model, the turbulent flow structure is arranged, the tail gas produced by dry ice enters the flow guide pipe through the gas inlet pipe, the steering pipe and the communicating pipe, and the connecting plate divides the cavity in the flow guide pipe into two parts, so that the tail gas in the flow guide pipe can be shunted; the split tail gas is blocked through a first turbulent flow block and a second turbulent flow block, so that the passing speed of the tail gas in the flow guide pipe is slowed down, the retention time of the tail gas in the flow guide pipe is prolonged, sufficient heat exchange of the tail gas is guaranteed, cold energy is recycled, and the function of prolonging the heat exchange time of the tail gas is achieved; and the recovery efficiency of the cold energy recovery device in use is improved.

The invention discloses a hydraulic oil cylinder with an axial supporting protection function, and belongs to the technical field of hydraulic cylinders, the hydraulic oil cylinder comprises an outer cylinder body, an oil cylinder rod and a first piston, a center oil cavity is formed in the outer cylinder body, the first piston is fixedly connected to the bottom of the oil cylinder rod, and the oil cylinder rod and the first piston are both slidably connected to the interior of the center oil cavity; a pressure buffering structure is connected into the outer cylinder body, when the oil cylinder rod bears pressure, the pressure buffering structure and the magnetic supporting structure are matched with each other to jointly share the pressure borne by the oil cylinder rod, a supporting rod in the magnetic supporting structure can transmit the pressure of the oil cylinder rod to a second piston, and therefore the oil cylinder rod is prevented from falling off. The second piston slides downwards in the storage cavity and extrudes the magnetorheological fluid, the stress of the oil cylinder rod is relieved through the buffering characteristic of the magnetorheological fluid, and therefore protection on the oil cylinder rod is effectively enhanced, and the stability and reliability of the hydraulic oil cylinder under the pressure effect are improved.

The utility model relates to a steel structure beam with a two-end splicing structure, which comprises a main beam, U-shaped supports are arranged at two ends of the main beam, one side of each U-shaped support is connected with a fixing shaft in a penetrating manner, one end of each fixing shaft is fixedly connected with the main beam, and the other end of each U-shaped support is fixedly connected with a mounting plate. First rotating supports are arranged on the upper side and the lower side of the mounting plate correspondingly, screws are connected into the first rotating supports, one ends of the screws are connected into threaded pipes, the other ends of the threaded pipes are connected into spherical seats, and the spherical seats are arranged in second rotating supports. The U-shaped support and the installation plate are arranged on the two sides of the main beam, the angle of the installation plate can be adjusted by adjusting the threaded pipe and the lead screw on the upper side and the lower side of the main beam, the installation plate can be installed on a steel structure in a rotating mode at a proper angle, and the lead screw and the threaded pipe can support the installation plate. And the supporting force and stability of the mounting plate to the main beam are improved.

The utility model discloses a circulating powder supply system of SLM printing equipment. A lower connector of a residual powder transfer powder tank is connected with a gas circuit powder conveying pipeline; an outlet of the blower is connected to an inlet of the gas circuit powder conveying pipeline; the cyclone separator is connected with an outlet of the gas circuit powder conveying pipeline; a powder outlet of the cyclone separator is connected with an inlet of the powder drying chamber, the powder drying chamber is connected with an inlet of the ultrasonic screening device, and the ultrasonic screening device is connected with the main powder storage tank. An output port in one side of the air bag is connected with an inlet of the arch breaking pipeline, an outlet of the arch breaking pipeline is internally connected with the main powder storage tank, the material supplementing tank, the top powder storage tank and the transfer powder tank, the top powder storage tank is arranged at the top of the SLM printing equipment, and an outlet of the top powder storage tank is connected to an inlet in the top of the SLM printing equipment; the material supplementing tank is connected to the gas circuit powder conveying pipeline; and the SLM printing unit is arranged on the gas circuit powder conveying pipeline. The problem that in the prior art, the efficiency is low due to the fact that powder is manually added or carried to complete the powder supply link of the printing equipment is solved.

The invention discloses a controller heat dissipation water channel, and relates to the technical field of controller heat dissipation, the controller heat dissipation water channel comprises a lower shell, the two corners of the lower sides of the left and right ends of the lower shell are connected with mounting seats, the upper end of the lower shell is connected with an upper shell through bolts, and the bottom of an inner cavity of the lower shell is connected with a circuit board through bolts; a heat dissipation cavity is formed in the upper end of the upper shell in a front-back penetrating mode, a plurality of heat dissipation pieces are connected to the interiors of the left side and the right side of the upper end of the upper shell, and a collection piece is connected to the middle of the heat dissipation pieces. Cooling liquid absorbs heat in the circulation process and is dissipated through the cooling fins, the cooling liquid absorbs the heat in the heat absorption cavity and then is evenly distributed to the cooling fins through the communication pipeline, meanwhile, airflow in the heat dissipation cavity rapidly takes away the heat, an efficient heat exchange path is formed, local overheating is avoided, heat dissipation uniformity is improved, and long-time stable operation of the controller is guaranteed.

The invention discloses a welding tool, a heater module and an integrated module electric compressor, and belongs to the technical field of heater welding machines.The welding tool comprises a tool body, a containing cavity is formed in the tool body, a heater is placed in the containing cavity, and the heater comprises a base plate and a heating plate; the heating plate is connected with a plurality of heat conducting fins; the tool body comprises an upper positioning assembly and a lower positioning assembly, the upper positioning assembly and the lower positioning assembly are mutually fixed through bolts, the lower surface of the upper positioning assembly, the upper surface of the lower positioning assembly and cavities in the opposite surfaces of the upper positioning assembly and the lower positioning assembly are combined to form a containing cavity, and a plurality of welding exhaust holes are formed in the containing cavity. A stress release groove is connected into the containing cavity. The substrate surface temperature can be reasonably and effectively utilized, waste of waste heat in the substrate welding process is reduced, the heat efficiency in the substrate welding process is improved, and the welding quality of the substrate and a heating plate is effectively improved.

The invention belongs to the technical field of valve welding, and particularly relates to a vacuum butterfly valve welding rotary table. The device comprises a base, wherein a fixed table is fixedly connected to the base; one end of the locking pipe is fixedly connected with a rotating shaft, and the rotating shaft is connected to the fixed table; a plurality of pressing strips are evenly and movably connected to the surface of the locking pipe in the circumferential direction of the locking pipe, and a push rod used for driving the pressing strips to move is connected into the locking pipe. When the supporting assembly moves in the direction close to the locking pipe, the supporting assembly automatically supports and fixes the valve body, the supporting assembly drives the push rod to move and drives the pressing strip to move towards the periphery, and the valve rod base is fixed to the valve body. The supporting assembly moves in the direction close to the locking pipe, the supporting assembly can be automatically driven to tightly support and fix the valve body, the locking pipe is driven to automatically lock and fix the valve rod seat, the valve rod seat is automatically fixed to the valve body, meanwhile, the purpose of fixing the valve rod seat and the valve body is achieved, and operation is convenient.

The invention relates to the technical field of internet of things data processing, in particular to internet of things data processing equipment convenient to disassemble and assemble, which comprises a case, a data equipment power supply box is arranged in the case, a starting assembly for fixing the data equipment power supply box is arranged in the case, and positioning assemblies are arranged on two moving shells. A matching assembly is arranged in the machine case, two triggering assemblies are arranged at the bottom end in the machine case, a taking-out assembly is arranged on the top of each sliding shell, and a pushing assembly is arranged in the machine case. According to the invention, the device can complete one-key automatic mounting and dismounting, the protection of the device is improved, and the maintenance of the device is more convenient, so that the problem that the damage risk is increased due to the fact that connection lines in the power supply device box are damaged and the dismounting process is tedious is solved.

A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and / or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications. The wireless communication can also be used to control one or a group of lighting fixtures and transmit sensor data associated with, for example, monitoring space utilization and asset tracking.

To allow an electronic control unit to be replaced with good work efficiency and prevent foreign matter from entering a casing during maintenance work, the connector connection structure includes an internal connector positioned inside a casing, an external connector positioned outside the casing and an electronic control unit electrically connected between the external connector and the electronic control unit wherein the electronic control unit includes a main part that opposes an opening formed in the casing when the internal connector is connected thereto, and a first conductive connection portion and a second conductive connection portion provided on either end of the main part and configured to be connected to the internal connector and the external connector respectively, and a first seal member is provided on an outer periphery of the main part, the first seal member closing the opening when the external connector is not connected to the electronic control unit and the internal connector is connected to the electronic control unit.

The black metal smelting rolled product welding equipment comprises a workbench, the middle of the workbench is fixedly connected with a welding mechanism, two circular grooves are formed in the surface of the workbench, and the interiors of the grooves are fixedly connected with adjusting mechanisms; the top of the panel is fixedly connected with a limiting mechanism, and the limiting mechanism is internally connected with a round pipe; the upper portion of the extension rod is connected with a connecting rod which is connected with a rotating rod through a rotating shaft. The adjusting mechanisms are arranged on the two sides of the welding mechanism, the tops of the adjusting mechanisms are connected with the limiting mechanisms and the fixing mechanisms, and the rotating directions of the workpieces are adjusted through the adjusting mechanisms, so that the equipment can be in butt joint with the two straight workpieces and can also be used for welding the two workpieces with a certain included angle; and the interiors of the limiting mechanism and the fixing mechanism are not only suitable for circular pipeline workpieces with different diameters, but also capable of clamping workpieces with other shapes, so that normal operation of welding work is facilitated.