36results about How to "With buffer space" patented technology

The invention provides a furniture plate turnover device. The furniture plate turnover device comprises a supporting mechanism, a lifting mechanism, a rotating mechanism and a clamping mechanism, wherein the supporting mechanism is fixed in a frame; the lifting mechanism is arranged on the supporting mechanism; the rotating mechanism is arranged on the lifting mechanism; the clamping mechanism isarranged on the rotating mechanism; and the clamping mechanism is provided with a positioning mechanism for fixing a furniture plate. The lifting mechanism drives the rotating mechanism, the clampingmechanism and the furniture plate carried by the clamping mechanism to rise and fall, and the rotating mechanism drives the clamping mechanism and the furniture plate carried by the clamping mechanismto rotate. According to the turnover device, the rotating mechanism is arranged on the lifting mechanism, and the rotating mechanism can move to a proper height through the lifting mechanism before overturning, so that the rotating mechanism is conveniently matched with processing equipment, the collision between the rotating mechanism and surrounding parts is avoided, and therefore, the turnoverdevice is suitable for various working conditions.

The invention relates to a building construction structure adopting a steel reinforced concrete reticular structure as a main part. The building construction structure comprises a plurality of vertical channel steels, angle steels horizontally arranged to transversely cross every two adjacent vertical channel steels and tee steels horizontally arranged, and is provided with a plurality of layers, wherein each layer is provided with adjacent separated front and back or left and right house steel plate frames, each layer of house supporting frame is provided with reinforcing steel bars, the wall surface of each supporting frame is provided with doublelayer horizontal reinforcing steel B and vertical reinforcing steel B, and door and window frame bodies of the supporting frames are fixed on the vertical channel steels, the angle steels horizontally arranged and the tee steels horizontally arranged by reinforced reinforcing steels. The building construction structure not only can relieve the problem of energy shortage, but also can improve the overall insulation, sound insulation and ventilation performance of the house, increase the assembly speed and efficiency and prevent the house from being cracked under expansion on heating and contraction on cooling.

The invention relates to an automatic testing platform for an intelligent switch. The automatic testing platform comprises a testing platform body and a control panel and is characterized in that thetesting platform body comprises a current increasing mechanism, a voltage increasing mechanism, a switch-on and switch-off mechanism and a grounding mechanism, the control panel comprises a voltage regulator, a mainframe and a three-phase standard meter, the mainframe is connected with the current increasing mechanism and the voltage increasing mechanism through the voltage regulator, the currentincreasing mechanism and the voltage increasing mechanism are connected to three wire inlet contacts and three wire outlet contacts, the three wire inlet contacts and the three outlet contacts are correspondingly connected with or disconnected with the three wire inlet connectors and the three wire outlet connectors of the intelligent switch through a contact lifting mechanism, the intelligent switch is connected with the mainframe through a control terminal, the switch-on and switch-off mechanism and the grounding mechanism are arranged on the intelligent switch and connected with the mainframe, the current increasing mechanism, the voltage increasing mechanism and the control terminal are connected with the three-phase standard meter, and the three-phase standard meter is connected to the mainframe. By the comprehensive testing platform, testing efficiency, testing stability and testing quality can be increased.

The invention relates to the technical field of underground engineering settlement deformation observation, and discloses a convenient-to-install real-time tunnel stratum settlement detecting device.The device comprises an initial support steel frame, a tunnel beam is fixedly connected to the outer side of the initial support steel frame, the middle portion of the initial support steel frame is sleeved with anchor rods, and snap rings are fixedly connected to the ends, close to the top of the initial support steel frame, of the anchor rods. The convenient-to-install real-time tunnel stratum settlement detecting device has the advantages of being convenient to install through installation bases, second springs, clamping plates, buffering pads and adjusting bolts; the direct clamped connection with the initial support steel frame can be achieved through U-shaped clamping grooves formed in the installation bases, the initial support steel frame is clamped and fixed through the adjustingbolts and the clamping plates, and the buffering pads can fill cooperation gaps of the clamping plates and the initial support steel frame so that the clamping plates can fully fit the initial supportsteel frame; the installation bases and the initial support steel frame have a certain buffering amount through the second springs, and the influence of excessive impulses on the observation of pressure boxes is avoided.

The invention discloses a film blowing unit for a heat shrinkable film. The film blowing unit comprises a fuse machine, a heating element, a film tube and an inverted-V-shaped plate, wherein the top of the fuse machine is welded with a hopper; the middle bolt of a first bracket is fixed with the film tube; the top of the first bracket is welded with the inverted-V-shaped plate; one end of a guidebarrel is connected with an air tube in a penetrating mode; one end of the air tube penetrates through the first bracket, and is positioned at the outer side of the first bracket; the side bolt of thefirst bracket is connected with a second bracket; the top edge of the second bracket is welded with a rolling roller assembly; the upper end of the second bracket is welded with a mounting frame; themounting frame is positioned between the rolling roller assembly and the first bracket; and the inner side shaft of the bottom of the mounting frame is connected with a guide roller. According to thefilm blowing unit for the heat shrinkage film disclosed by the invention, at a charging state, metal substances in raw materials are removed; at a forming stage, the film is guided and synchronouslycooled; and at a rolling stage, the film is flattened, so that folds are avoided.

An automatic production line for plastic grafting clips comprises a spiral extrusion machine, a cooling mechanism, a belt towing mechanism, a tension control mechanism, a belt feeding mechanism and a cropping mechanism, wherein the spiral extrusion machine, the cooling mechanism, the belt towing mechanism, the tension control mechanism, the belt feeding mechanism and the cropping mechanism are sequentially arranged; the tail end of the spiral extrusion machine is connected with a grafting clip mold, and the cooling mechanism comprises a cooling groove; the cooling groove is internally provided with a belt inlet guide wheel, a soaking belt guide wheel and a belt outlet guide wheel at least; the belt towing mechanism, the tension control mechanism, the belt feeding mechanism and the cropping mechanism are arranged on a supporting frame, and the tension control mechanism is arranged below the position between the belt towing mechanism and the belt feeding mechanism; and the tension control mechanism comprises a rotatable support movably hinged to the side face of the supporting frame, and a radial guide rod is arranged at the front end of the rotatable support. An extension spring fixed to the bottom of the supporting frame is further arranged on the rotatable support. The automatic production line is simple in structure, balance of belt walking tension of molding belts in all mechanisms is achieved, and the production efficiency and quality of the plastic grafting clips are improved.

The invention discloses a wood drying device and a using method thereof. The wood drying device comprises a working frame and a drying plate arranged above the working frame, a water storage tank is fixedly connected to the bottom of a top plate of the working frame, and air cylinders are fixedly connected to the front side and the rear side of the bottom of an inner cavity of the water storage tank correspondingly. The invention relates to the technical field of wood processing. According to the wood drying device and the using method thereof provided by the invention, the two supporting rollers are arranged to directly support round logs, the air cylinders, first tooth plates, gears, second tooth plates and supporting plates are arranged in a matched mode, the distance between the two supporting rollers is adjusted, and therefore the round logs with different calibers can be conveniently supported; and meanwhile, in cooperation with the arrangement of a telescopic rod and the drying plate, the axial parts of the round logs can be directly dried, and after a motor is started, the supporting rollers can be driven to rotate, so that the round logs are rotatably dried, drying is more uniform, the round logs can be compacted by the drying plate in the drying process, and the situation that the round logs are bent after being dried is effectively avoided.

The invention discloses a post-trigger type door leaf linkage structure, which comprises a door leaf, a main lock body, a connecting rod assembly, an anti-theft lock point assembly, and a contactor. The connecting rod assembly comprises a horizontal connecting rod assembly and a longitudinal connecting rod assembly connected with each other; the contactor is arranged at the rear end of the horizontal connecting rod assembly and is located on the inner side of the door leaf; the contactor drives the longitudinal connecting rod assembly to move outwards through the horizontal connecting rod assembly and drives the anti-theft lock point assembly to lock; and the main lock body drives the connecting rod assembly to move inwards and drive the anti-theft lock point assembly to unlock. Accordingto the post-trigger type door leaf linkage structure provided by the invention, through arranging the contactor on the inner side of the door leaf, a transmission pressure of the main lock body is reduced, and the wear of parts in the main lock body during a use process is reduced; and on the other hand, a function of the main lock body for locking the anti-theft lock point assembly is separated out, so that an inner structure of the main lock body is simplified, the occurrence of the phenomenon of excessive deformation of the parts in the main lock body caused by frequent door opening, door closing and locking during a use process is prevented, and the service life of the main lock body is reduced.

The invention relates to the technical field of LED display screen protection covers, in particular to a compression-resistant buffering device for an LED display screen protection cover. The device comprises a protection cover; buffering grooves are formed in the upper end and the lower end of the front side in the protection cover; sliding frames are arranged in the buffering grooves; protection glass is arranged in the middles of the sliding frames on the upper side and the lower side; clamping plates are arranged in the middles of the left sides of the sliding frames; and the clamping plates are arranged in the inner walls of the right sides of the buffering grooves. According to the compression-resistant buffering device for the LED display screen protection cover, the protection glass is arranged in the buffering groove through the sliding frames; the protection glass can slide in the buffering groove at a certain amplitude; the protection cover has a certain buffer space due to strong wind weather or external manpower, and the protection cover is not prone to being broken due to external force; and an LED display screen is tightly fixed in the protection cover through a support, the outer side of the LED protection cover is separated from the protection cover through a buffering pad, the LED protection cover is not prone to collision; a rotating plate rotates on the left side through a rotating bearing, so that the protection cover is convenient to open and close, and the protection cover is convenient to mount and dismount.

The invention discloses a portable reinforced round shield. The portable reinforced round shield comprises a protective shield plate and a protective support plate connected to the back face of the protective shield plate, and a buffer space is formed between the protective shield plate and the protective support plate; one side located on the back face of the protective support plate is fixedly connected with a grip handle, and the other side located on the back face of the protective support plate is movably connected with a protective arm; one end of the protective arm is tightly fixed on the protective support plate through a screw, the other end of the protective arm protrudes to form a fixture block, and a clamping groove used for allowing the fixture block to be clamped is formed in the protective support plate. Due to the fact that the buffer space is formed, when the protective shield plate is impacted, the protective shield plate deforms, partial impact force is offset, the weakened impact force is transferred to the protective support plate and offset through a police officer, and the impact force subjected by the police officer is effectively reduced; the structural design according with human engineering is adopted by the grip handle and the protective arm, the grip comfort for the police officer can be effectively improved, the grip handle and the protective arm can be used by the police officer for holding the shield with two hands, and the applicability range is wide. The portable reinforced round shield has the advantages of being comfortable in grip, stable in structure, strong in anti-impact capacity, convenient to carry and the like.

The invention discloses a pressure-proof sealed fireproof file cabinet, which comprises a cabinet body. The cabinet body is formed by combining an outer cabinet body, an inner cabinet body, and rectangular columns;the four rectangular columnsare distributed in a matrix mode, bolt holes are formed in the middle positions of the upper parts of the four rectangular columns, the four rectangular columns are fixedly welded to the four corners of an inner cavity of the outer cabinet body respectively, anda plurality of equally spaced support steel plates are welded to the left side, the right side,and the rear side between the outer cabinet body and the inner cabinet body in a perpendicular mode. According to the pressure-proof sealed fireproof file cabinet,the four rectangular columns are arranged to weld the inner cabinet body to the outer cabinet body in a matching mode, bases and pressure-proof top platesare fixed to the lower parts and the upper parts of the rectangular columnsrespectively, when the cabinet body is smashed and pressed by collapse of heavy objects in a fire, the four rectangular columns, the bases, and the pressure-proof top plates are combined to withstand maximumpressure, it is better ensured that the cabinet body is not be deformed after being smashed, and internal files are better protected.

The invention discloses a sulfur-iron self-oxidation denitrification device and a reaction control method. The sulfur-iron self-oxidation denitrification device comprises an iron self-oxidation denitrification bin and a sulfur self-oxidation denitrification bin, a water inlet device is arranged in the iron self-oxidation denitrification bin, and the iron self-oxidation denitrification bin is communicated with the sulfur self-oxidation denitrification bin; a gas outlet pipe is arranged at the top of the sulfur self-oxidation denitrification bin; a gas concentration sensor, a gas flow sensor, a signal collector and a signal transmitter are arranged on the gas outlet pipe; a water outlet pipe is arranged at the middle lower part of the sulfur auto-oxidation denitrification bin; the signal transmitter transmits the gas data information to the control platform; and the invention further discloses the reaction control method. The nitration device disclosed by the invention is sufficient in reaction and good in reaction controllability.

The invention discloses a submersible sewage pump. The submersible sewage pump comprises a submersible sewage pump body and a sewage pool, wherein a base is arranged at the bottom of the sewage pool through a bottom stand column; a top seat is arranged at the top of the sewage pool; a vertical screw rod and a vertical guide rod are arranged between the base and the top seat; the lower end of the vertical screw rod is rotationally arranged on the base through a lower bearing seat; the upper end of the vertical screw rod is rotationally arranged on the top seat through an upper bearing seat; theupper end of the vertical screw rod is connected with a motor shaft of a servo gear motor; the servo gear motor is fixedly arranged on the top seat; a vertical screw sleeve matched with the verticalscrew rod is arranged on one side of the submersible sewage pump body; a vertical guide sleeve matched with the vertical guide rod is arranged on the other side of the submersible sewage pump body; and a water inlet is formed in the upper end of the submersible sewage pump body.

The invention discloses portable multifunctional food detecting equipment with anti-collision structures, and relates to the technical field of food detecting equipment. The portable multifunctional food detecting equipment with the anti-collision structures comprises a main body shell and protecting mechanisms; the protecting mechanisms are arranged on the left and right sides in the main body shell; rotary detecting equipment is arranged on the lower side in the main body shell; the protecting mechanisms comprise pressure bearing bases, pressure bearing columns and lining protecting plates;the pressure bearing columns are arranged on the right sides of the pressure bearing bases; and a storage mechanism is arranged on the right side of the rotary detecting equipment. The portable multifunctional food detecting equipment with the anti-collision structures greatly improves the usability when structures are additionally provided; and the improved equipment achieves excellent protectiveness in outdoor carrying process, reduces the influence on internal devices and reagents after collision as far as possible, and comprehensively protects the internal devices to effectively meet the use demands of people.

The invention provides an intelligent graphene conductive paste RFID electronic tag production line which comprises a mounting outer frame, a first film roller, a buffer jacking frame structure, a graphene conductive paste storage hopper, a printing roller, an auxiliary scraping plate, an antioxidant storage hopper, an antioxidant feeding pump, an antioxidant feeding pipe, an antioxidant spray head, an ultraviolet lamp, a glue solution adding frame structure and a second film roller. The device comprises a mounting outer frame, a first film roller, a second film roller, a double-film combination auxiliary clamping frame structure, a reinforced cooling frame structure, a wind-up roller, a controller and an alarm, and the first film roller is mounted on the left side of the mounting outer frame; the buffer jacking frame structure is mounted on the left side of the top of the mounting outer frame; and the graphene conductive paste storage hopper is arranged at the lower part of the buffer jacking frame structure. A liquid level sensor is installed on the right side in the glue storage hopper, the height of the liquid level in the glue storage hopper can be conveniently detected during use, and when the liquid level is low, an alarm can be controlled by a controller to give an alarm to remind workers.

The invention relates to an anti-cracking mahjong tile and a manufacturing technology, and relates to the field of production and processing of mahjong tiles. The mahjong tile comprise a tile body, the tile body comprises a shell body and a back cover, a containing cavity with an opening is formed in the shell body, and the back cover seals the opening of the containing cavity; a placing groove isformed in the bottom of the containing cavity, a magnetic block is arranged in the placing groove, and the containing cavity is filled with a buffering layer; the first buffering layer covers the placing groove and the magnetic block, the first buffering layer adheres to the surface of the containing cavity, and a second buffering layer located on the first buffering layer is located in the containing cavity; a buffering space exists between the second buffering layer and the back cover, and the first buffering layer is an incomplete-heating melamine powder layer. Through the first bufferinglayer and the second buffering layer, when the temperature is changed, the incomplete-heating melamine powder layer has an upward expanding buffering space, cracking of the mahjong tile is avoided, and the technical problem is solved that the mahjong tile easily cracks.

The invention discloses a pay-off rack capable of automatically regulating a speed. The pay-off rack comprises a support, a pay-off shaft, a motor, an elastic diaphragm and a sensor, wherein the pay-off shaft is fixed on the support through a bearing, and one end of the pay-off shaft is connected with an output shaft of the motor; a cross beam is arranged on the support and at one side of the pay-off direction of the pay-off shaft; a wiring groove for penetration of a wire body is pre-formed in the elastic diaphragm, the two sides of the elastic diaphragm are fixed on the cross beam respectively, and a gap is reserved between the inner circumferential surface of the elastic diaphragm and the cross beam to form a buffer cavity; and the sensor is arranged in the buffer cavity, located below the wiring groove, and connected with the motor. According to the pay-off rack disclosed by the invention, the problem of wire breakage or sliding-off of the wire body due to a too high or too low tensioning force is solved through adjustment of the motor for a pay-off speed, thus effectively increasing the processing efficiency of a cable.

The invention discloses a nursing mat with nano copper fibers. The nursing mat comprises a bottom plate, wherein a memory foam layer is arranged at the upper end of the bottom plate, a functional layer is arranged at the upper end of the memory foam layer, a deodorizing layer is arranged at the upper end of the functional layer, a water absorption layer is arranged at the upper end of the deodorizing layer, a groove is formed in the memory foam layer, the functional layer, the deodorizing layer and the water absorption layer, a connecting plate is arranged in the groove, a buffer device is arranged on the connecting plate, an arc-shaped plate is arranged on the buffer device, a water-permeable surface layer is arranged at the upper ends of the arc-shaped plate and the water absorption layer jointly, and a nano copper fiber layer is arranged at the upper end of the water-permeable surface layer. The arc-shaped plate at the waist is convenient to adjust according to the actual situation,certain buffer is achieved after the waist is contacted with the arc-shaped plate by the buffer device, comfort is increased, the nursing mat has functions of resisting and killing bacteria, improving blood circulation and keeping dry all the time, and use experience is improved.

The invention discloses a wooden door with buffering lines. The wooden door comprises a door frame and a core plate, and a clamping groove is formed in the door frame. The side edge of the core plateis fixed into the clamping groove of the door frame in inserted and clamped modes, and line structures are arranged between the core plate and the inner wall of the clamping groove. The line structures comprise line main bodies, and buffering grooves are formed in the side faces of the line main bodies; buffering holes are evenly formed in the bottom of each buffering groove, and abutting strips are arranged in the buffering grooves; and buffering springs are arranged in the buffering holes, the bottom faces of the abutting strips abut against the buffering springs, and under the effects of the buffering springs, the outer side faces of the abutting strips abut against the inner wall of the clamping groove or the surface of the core plate. According to the wooden door, the structure arrangement is reasonable, the door frame, the core plate and the lines can be effectively and quickly assembled, and the buffering springs and the abutting strips are matched, so that a certain buffering space is formed between the core plate and the door frame, the overall firmness of the wooded door can be guaranteed, shrinkage and expanding deformation of the wooded door is prevented, use reliability is guaranteed, applicability is high, and practicality is good.

The invention relates to an automatic testing platform for an intelligent switch. The automatic testing platform comprises a testing platform body and a control panel and is characterized in that thetesting platform body comprises a current increasing mechanism, a voltage increasing mechanism, a switch-on and switch-off mechanism and a grounding mechanism, the control panel comprises a voltage regulator, a mainframe and a three-phase standard meter, the mainframe is connected with the current increasing mechanism and the voltage increasing mechanism through the voltage regulator, the currentincreasing mechanism and the voltage increasing mechanism are connected to three wire inlet contacts and three wire outlet contacts, the three wire inlet contacts and the three outlet contacts are correspondingly connected with or disconnected with the three wire inlet connectors and the three wire outlet connectors of the intelligent switch through a contact lifting mechanism, the intelligent switch is connected with the mainframe through a control terminal, the switch-on and switch-off mechanism and the grounding mechanism are arranged on the intelligent switch and connected with the mainframe, the current increasing mechanism, the voltage increasing mechanism and the control terminal are connected with the three-phase standard meter, and the three-phase standard meter is connected to the mainframe. By the comprehensive testing platform, testing efficiency, testing stability and testing quality can be increased.

The invention discloses a road and bridge deicing machine, and belongs to the technical field of deicing equipment. The deicing machine comprises an arch bridge structure used for meeting normal passing of vehicles while deicing is conducted; a moving mechanism which is used for moving the arch bridge structure along the length direction of the road bridge; and a deicing mechanism which is used for removing ice and snow on the road surface; the arch bridge structure comprises a supporting main body; an uphill surface which is fixed on the support main body in a direction parallel to the widthdirection of the road bridge; a lower slope surface of which the top is hinged to the side, opposite to the upper slope surface, of the supporting body; a containing cavity which is formed in the supporting body, and the side, close to the downhill surface, of the containing cavity is an open end; and a first elastic supporting piece which is arranged between the downhill surface and the bottom ofthe containing cavity, wherein the bottom of the first elastic supporting piece is fixed to the bottom surface of the containing cavity and used for elastically supporting the downhill surface; the deicing mechanism is arranged at the outer edge, parallel to the road surface, of the bottom of the containing cavity. According to the deicing machine, passing and deicing can be carried out at the same time, the deicing efficiency is high, and damage to the road surface is small.

The invention discloses a sulfur-iron autotrophic denitrification device and a reaction control method, comprising an iron-autotrophic denitrification bin and a sulfur-autotrophic denitrification bin; The silo and the sulfur autotrophic denitrification silo are communicated and arranged; the top of the sulfur autotrophic denitrification silo is provided with an air outlet pipe; the air outlet pipe is provided with a gas concentration sensor, a gas flow sensor, a signal collector and a signal A transmitter; a water outlet pipe is arranged in the lower part of the sulfur autotrophic denitrification bin; the signal transmitter transmits gas data information to a control platform; and a control reaction method is also included. The nitrification device of the invention has sufficient reaction and good reaction controllability.

The invention discloses a high-efficiency self-adjusting shock absorber, which belongs to the field of shock absorbers. A high-efficiency self-adjusting shock absorber includes a cylinder, a pull rod and a shock absorber. The pull rod is slidably inserted into the cylinder, and the shock absorber It is socketed on the outer wall of the cylinder, the end of the tie rod is fixed with a piston, and the circumferential side of the piston is fixed with a sealing ring. There is a cavity inside the piston, and an acceleration vane is installed in the cavity. The rotation shaft is fixed on the acceleration vane, and the rotation shaft passes through the The bearing structure is rotatably connected in the cavity, the end of the tie rod is provided with a deceleration chamber, one end of the rotating shaft extends into the deceleration chamber and is fixed with a brake disc, the deceleration chamber is filled with magnetorheological fluid, and the bottom of the piston is provided with several The cavity is connected to the oil hole, and the top of the piston is provided with a number of first one-way holes and second one-way holes. In the present invention, the speed of the front end of the piston descends at a high speed, and the speed at the rear end of the descending gradually decreases, so as to achieve the purpose of self-adjustment of resistance and high-efficiency lifting Improved shock absorption efficiency and ride comfort.

The invention discloses a heat-shrinkable film blowing unit, which comprises a hot-melt machine, a heating element, a film tube and a herringbone plate. The top of the hot-melt machine is welded with a hopper, and the middle bolt of the first bracket is fixed with a film pipe, and the top of the first bracket is welded with a herringbone plate, one end of the guide cylinder is connected with an air duct, and one end of the air duct is located outside the first bracket, and the side bolts of the first bracket are connected with the second Two brackets, and the top edge of the second bracket is welded with a winding roller assembly, the upper end of the second bracket is welded with a mounting frame, and the mounting frame is located between the winding roller assembly and the first frame, the bottom of the mounting frame The inner shaft of the is connected with a guide roller. The heat-shrinkable film blowing unit removes metal substances in raw materials during the feeding stage, guides and synchronously cools the film during the forming stage, and flattens the film during the winding stage to avoid wrinkles.

The invention relates to the technical field of lifting appliances, in particular to an electromagnetic floating type lifting appliance which comprises a plurality of trusses, a fixing frame and a plurality of electromagnets arranged in an array mode, a lifting mechanism used for driving the fixing frame to ascend or descend is arranged on the trusses, and the electromagnets are arranged on the fixing frame in a floating mode. When the electromagnetic floating type lifting appliance is used, the electromagnets which are arranged in an array mode are arranged on the fixing frame in a floating mode, so that the electromagnets have a certain moving space, the electromagnets are prevented from colliding with a steel plate in a hard mode, the electromagnets have a certain buffering space, and therefore the electromagnets are prevented from being damaged. The problems that when an electromagnet of an existing magnetic type lifting appliance attracts a steel plate, the phenomenon that the electromagnet and the steel plate collide with each other easily occurs, so that the steel plate or the electromagnet is damaged, the quality of equipment or the steel plate is affected, and unnecessary damage is caused are solved.

The invention discloses a drain valve based on safety improvement. The drain valve based on safety improvement comprises a valve body assembly, a control assembly and mounting assemblies, the valve body assembly comprises a shell, a fastener arranged on one side of the shell, a water inlet piece arranged on the top of the shell, and a water outlet piece arranged at the bottom of the shell. The control assembly is arranged in the shell and comprises a valve seat arranged on the inner bottom wall of the shell, a valve clack arranged on the top of the valve seat, a flow guide part arranged in the valve seat and a floating ball part arranged on the top of the valve clack. The mounting assemblies are arranged on the inner bottom wall of the shell and located on the two sides of the valve seat. According to the drain valve based on safety improvement, through the arrangement of the control assembly and the mounting assemblies, the disassembly, assembly and maintenance efficiency of the drain valve is higher, meanwhile, the drain valve is more convenient to use, then through the arrangement of a connecting assembly, the stability of the drain valve is higher when the drain valve is connected to a pipeline, a certain buffer space is provided, the probability of breakage of the joint between the drain valve and the pipeline is greatly reduced, and the safety is higher.

An automatic production line for plastic grafting clips comprises a spiral extrusion machine, a cooling mechanism, a belt towing mechanism, a tension control mechanism, a belt feeding mechanism and a cropping mechanism, wherein the spiral extrusion machine, the cooling mechanism, the belt towing mechanism, the tension control mechanism, the belt feeding mechanism and the cropping mechanism are sequentially arranged; the tail end of the spiral extrusion machine is connected with a grafting clip mold, and the cooling mechanism comprises a cooling groove; the cooling groove is internally provided with a belt inlet guide wheel, a soaking belt guide wheel and a belt outlet guide wheel at least; the belt towing mechanism, the tension control mechanism, the belt feeding mechanism and the cropping mechanism are arranged on a supporting frame, and the tension control mechanism is arranged below the position between the belt towing mechanism and the belt feeding mechanism; and the tension control mechanism comprises a rotatable support movably hinged to the side face of the supporting frame, and a radial guide rod is arranged at the front end of the rotatable support. An extension spring fixed to the bottom of the supporting frame is further arranged on the rotatable support. The automatic production line is simple in structure, balance of belt walking tension of molding belts in all mechanisms is achieved, and the production efficiency and quality of the plastic grafting clips are improved.

An isolation and grounding interconnection device of a pole-mounted intelligent composite apparatus comprises a line input guide plate, a line output guide plate and a grounding guide plate, which are connected to a line input connector, a line output connector and one side surface of a box body respectively. The line output guide plate and the grounding guide plate are provided with a first through hole and a second through hole; a conducting rod is arranged between the line input guide plate and the grounding guide plate and passes through the first through hole; the upper end of the conducting rod is provided with a conductive contact ring; an insulating rod is arranged under the line output guide plate and passes through the second through hole; a grounding contact ring connecting with the conducting rod and the insulating rod is arranged between the line output guide plate and the grounding guide plate; and the lower end of the insulating rod is provided with a power mechanism for driving the insulating rod and the conducting rod to move up and down. The isolation and grounding interconnection device can simultaneously realize disconnection of the pole-mounted intelligent composite apparatus and grounding of a user side, thereby facilitating operation of maintainers, and ensuring personal safety of the maintainers.

The invention discloses a pay-off rack capable of automatically regulating a speed. The pay-off rack comprises a support, a pay-off shaft, a motor, an elastic diaphragm and a sensor, wherein the pay-off shaft is fixed on the support through a bearing, and one end of the pay-off shaft is connected with an output shaft of the motor; a cross beam is arranged on the support and at one side of the pay-off direction of the pay-off shaft; a wiring groove for penetration of a wire body is pre-formed in the elastic diaphragm, the two sides of the elastic diaphragm are fixed on the cross beam respectively, and a gap is reserved between the inner circumferential surface of the elastic diaphragm and the cross beam to form a buffer cavity; and the sensor is arranged in the buffer cavity, located below the wiring groove, and connected with the motor. According to the pay-off rack disclosed by the invention, the problem of wire breakage or sliding-off of the wire body due to a too high or too low tensioning force is solved through adjustment of the motor for a pay-off speed, thus effectively increasing the processing efficiency of a cable.