861results about How to "Quick break" patented technology

The utility model discloses a chemical mechanical polishing and planarization system, which at least comprises a polishing head. A plurality of air holes are formed in the lower surface of the hard disc, and a third air cavity communicated with the air holes is formed in the hard disc; at least part of the elastic unit is of an annular structure, the elastic unit is connected with the polishing head body and the hard disc, and a second air cavity is defined by the polishing head body, the elastic unit and the hard disc; a retaining ring; when the third air cavity is in a negative pressure state, the lower surface of the hard disc can make contact with and adsorb the wafer substrate, and the pressure in the second air cavity is controllable, so that the elastic unit is driven to flexibly move, the hard disc and the wafer substrate are assisted to float, and chemical mechanical polishing of the wafer substrate is achieved. The hard drive in the hard disc solves the problem that when the flexible film drives the wafer substrate to polish, the flexible film is pulled to cause fracture or elastic modulus change under the severe polishing condition, and the service life of the flexible piece is prolonged.

The invention belongs to the technical field of charging pile cable connection, and particularly relates to connecting equipment and a cable for a new energy automobile charging pile, and the connecting equipment comprises an automatic separation joint and a winding mechanism which are arranged on the charging pile; the winding mechanism is installed on the charging pile through the clamping mechanism, the clamping mechanism is provided with a fixed base and an elastic base, the fixed base and the elastic base form a separation path facing the cable pull-out opening, and the winding mechanism is formed by splicing a first winding disc and a second winding disc; the winding mechanism comprises a first winding disc and a second winding disc, the first winding disc and the second winding disc are each provided with a sliding groove which surrounds the center shaft and is arranged in a radial shape, and sliding bases are slidably connected into the sliding grooves. Sufficient time is provided for rapid separation of the charging gun cable connector and the charging pile cable connector, the pulling force of the cable does not act on the charging pile, and the charging pile does not bear the acting force except the preset separation value.

The utility model relates to a long-spiral gauge-protection negative-pressure forward-inclined-tooth PDC (polycrystalline diamond compact) drill bit which comprises a drill bit handle. The drill bit head part is supported on the drill bit handle part; the drill bit head comprises a drill bit body, a plurality of long blades, a plurality of short blades, a plurality of nozzles and forward-inclined PDC cutting teeth. The long blades and the short blades are arranged on the drill bit body at intervals in the circumferential direction of the drill bit body. One end of each long blade is connected with the end part of the drill bit body, and each long blade is spirally arranged on the outer wall of the drill bit body; a blade chip groove is formed between the long blade and the short blade; gauge protection chip grooves are formed among the long blades; and the nozzles are respectively arranged in the chip grooves of the cutter wings. When the long-spiral gauge protection negative-pressure forward-inclined-tooth PDC drill bit works, local negative pressure is generated through rotation, the forward-inclined PDC cutting teeth are in a plowing mode, upward returning of rock debris is accelerated, the well bottom cleaning effect is improved, bit balling is prevented, and the well bottom hold-down effect is reduced; and meanwhile, the plow PDC cutting teeth enable the rock debris to rapidly enter the bottom of the well, so that the mechanical drilling speed is increased.

The invention discloses a water source sampling device for ecological environment monitoring, and relates to the technical field of sampling devices.The water source sampling device comprises a bottom plate, four moving wheels are rotationally arranged below the bottom plate, the bottom plate is vertically connected with the first end of a supporting rod, and the right side of the second end of the supporting rod is vertically connected with the first end of a first electric push rod; the second end of the first electric push rod is vertically connected with a supporting plate, the lower portion of the supporting plate is connected with a second electric push rod and the first end of a telescopic rod, the second electric push rod and the second end of the telescopic rod are connected with one end of a transverse plate of the same L-shaped plate, one end of a vertical plate of the L-shaped plate is vertically connected with the first end of a first mounting plate, and the second end of the first mounting plate is connected with a second mounting disc. A first mounting disc is arranged above the second mounting disc, and a same filter screen is arranged between the first mounting disc and the second mounting disc; a crushing mechanism for crushing sundries is arranged on the outer side of the filter screen; the device is simple and reliable in structure, good in water source sample sampling effect, convenient to control and suitable for popularization.

The present invention relates to the technical field of material crushing and grinding, and specifically discloses a coal mill, including a machine base, on which a grinding disc, a grinding roller and a loading frame are arranged, the grinding roller rises and falls with the loading frame, a crushing assembly is arranged above the grinding disc, and the crushing assembly includes: a crushing rod, which is vertically slidably connected with the loading frame, and is used to crush the coal blocks on the grinding disc when the crushing rod descends, and a first spring is arranged between the crushing rod and the loading frame, and is used to make the crushing rod have a tendency to descend and reset; a guide member, which is fixedly connected with the crushing rod and is used to control the vertical movement of the crushing rod; a guide ring, which is fixedly connected with the grinding disc, and the guide member is in active contact with the guide ring, and a plurality of guide teeth are arranged on the guide ring, and when the guide ring rotates with the grinding disc, the guide teeth guide the guide member to move vertically, so as to realize the vertical movement of the crushing rod. The coal mill can quickly crush larger coal blocks, and improve the crushing capacity and crushing efficiency.

The invention discloses a structure for improving hydrogen production by alkaline electrolysis of water. The section of an electrode plate is of an oval structure, electric heating wires are evenly distributed in the electrode plate in the full-length direction of the electrode plate, and propeller blades for driving electrolyte to be in a turbulent flow state are further arranged on the inner bottom face, located at the bottom of the electrode plate, of an electrolytic bath. The electrode plate of the elliptical structure is adopted, the contact area between the electrode and the catalyst on the surface of the electrode and alkaline water is increased, the area is increased, full contact with liquid is facilitated, and bubble separation is facilitated. The thin electric heating wire is arranged in the electrode, so that the effect of forming relative high temperature on the catalyst layer on the surface of the electrode to promote the electrolytic efficiency is realized, and alkali liquor and bubbles generated on the surface of the electrode are quickly discharged. The propeller blade structure promotes alkali liquor to form a turbulent flow state, heat exchange is improved, alkali liquor flowing is promoted, generated bubbles are promoted to be rapidly separated, the contact time of an electrode and liquid is prolonged, the hydrogen production efficiency and yield are overall improved, and energy consumption is reduced.

The invention relates to the technical field of cleaning devices, in particular to a nursing tray efficient cleaning device which comprises a cleaning box, a cleaning assembly is arranged in the cleaning box, a pair of multi-section sliding rails is installed on the inner wall of the cleaning box, connecting rods are installed on the inner sides of the multi-section sliding rails, storage assemblies are arranged on the surfaces of the connecting rods, and a fixed transverse rod is installed at the rear ends of the connecting rods. The movable transverse rod is slidably connected to the surface of the connecting rod, the multiple driving cylinders are rotatably connected into the fixed transverse rod, the multiple driven cylinders are rotatably connected into the movable transverse rod, the end faces of the driving cylinders and the end faces of the driven cylinders are fixedly connected with telescopic shells, the clamping blocks are slidably connected into the telescopic shells, and a tray body is clamped between the clamping blocks. After the tray body is clamped and stored, the tray body rotates at a high speed, water stains on the surface of the tray body can be rapidly removed, meanwhile, the tray body is dried and sterilized in cooperation with high-temperature hot air, and the effect of rapidly cleaning the tray body can be achieved.

The invention discloses an injection mold for processing a thin-wall plastic product, and belongs to the field of injection molds, the injection mold comprises a female mold and a male mold attached to the female mold after moving, a material returning part is arranged in the female mold and the male mold, the material returning part comprises a fixed cylinder fixedly connected in the female mold, a guide groove is formed in the fixed cylinder, and the guide groove is matched with the guide groove. And the number of the guide grooves is two, the right half parts of the two guide grooves are both formed in a spiral shape, a rotating rod is slidably connected to the interior of the fixed cylinder, and the protruding positions of the outer side of the rotating rod are slidably connected to the interiors of the two guide grooves correspondingly. Due to the fact that the push rod used for material returning can rotate slowly in the process of pushing the plastic part, the plastic part can be separated from the surface of the guide column more easily, damage to the plastic part in the rotating process of the push rod can be avoided through slow rotation, defective products of the plastic part are prevented, and then the production quality of the plastic part is guaranteed.

The utility model relates to the technical field of square-handle drill bits, and discloses a square-handle electric hammer drill bit which comprises a square-handle rod and an electric hammer head, the square-handle rod and the electric hammer head are connected through threads, a scrap removing assembly is arranged in the electric hammer head and comprises a connecting base and a sleeve, the connecting base and the electric hammer head are connected through threads, the connecting base is arranged in the electric hammer head, and the sleeve is sleeved with the connecting base. The connecting base and the sleeve are connected through a reset spring, kidney-shaped holes are formed in the side face of the sleeve at intervals in the center line direction of the sleeve and communicate with the interior of the sleeve, a spiral groove is formed in the electric hammer head, and ventilation holes are formed in the inner side of the spiral groove at intervals. Driving force generated in the drilling process of the electric hammer is utilized, so that the scrap removing assembly can blow air to the spiral groove of the drill bit from inside to outside, scrap iron can be discharged from the spiral groove more conveniently, and the situation that the drilling efficiency is not high due to the fact that scraps are not discharged in time due to blocking of the scraps is avoided; and the drilling speed of the electric hammer drill bit is further improved.

The utility model is applicable to the technical field of plate processing, and provides a flattening mechanism of an aluminum plate shearing and conveying device, which comprises a shearing machine provided with a rack, a transmission mechanism is in transmission connection with the rack, a shearing mechanism is arranged on one side of the transmission mechanism, an aluminum plate to be processed is conveyed on the transmission mechanism, and the aluminum plate to be processed is conveyed on the shearing mechanism. The conveying mechanism is arranged on the rack and used for conveying an aluminum plate to the shearing mechanism, a mounting frame is further arranged on the portion, corresponding to the conveying mechanism, of the rack, a leveling roller mechanism is arranged in the mounting frame, a deviation rectifying assembly is movably connected to the leveling roller mechanism, and the deviation rectifying assembly is used for correcting the conveying direction of the aluminum plate in the leveling roller mechanism. The conveying direction of the aluminum plate can be guided by arranging the deviation rectifying assembly, the aluminum plate is prevented from being separated from the original conveying direction in the flattening process, meanwhile, the deviation rectifying assembly can reduce the workload needed by manual frequent observation and correction, and the labor cost needed by manual work is greatly reduced.

The invention discloses a limited micro-space multifunctional piling machine, and belongs to the technical field of piling machines. The limited micro-space multifunctional pile machine comprises a main machine assembly, a drilling rig assembly, a power head assembly, a multi-channel telescopic drill rod and a process drill bit, and the power head assembly comprises a box body, a telescopic driving hydraulic motor, a drill rod driving hydraulic motor, a multi-channel flow divider, a drill rod rotating joint and a screw driving joint, and the telescopic driving hydraulic motor, the drill rod driving hydraulic motor, the multi-channel flow divider, the drill rod rotating joint and the screw driving joint are installed on the box body. The multi-channel telescopic drill rod is controlled to rotate and stretch through the dual-drive power head, so that the overall height of the pile machine can be effectively reduced, low-clearance pile foundation construction can be achieved, multiple fluid channels are constructed in the multi-channel telescopic drill rod, the telescopic drill rod can be matched with drill bits of various technologies, and the construction efficiency is improved. Various pile foundation construction technologies are completed on one pile machine, and the blank of a multifunctional pile machine is filled. In addition, due to the design that the multi-channel shunting power head is matched with the multi-channel telescopic drill rod, rod connecting operation can be reduced or not needed, construction complexity is reduced, and construction efficiency is improved.

The invention relates to a preparation method of a multilayer alloy net electrode for hydrogen production by alkaline electrolysis of water and the multilayer alloy net electrode, and the preparation method comprises the following steps: firstly, selecting an alloy electrode net material, then etching the alloy electrode net, and carrying out electrochemical etching by taking the alloy electrode net as an anode and an inert electrode as a cathode and using 0.5-5M acid liquor to prepare the multilayer alloy net electrode. The preparation method comprises the following steps: sequentially overlapping a first layer of pure nickel net with the mesh number of 80-200 and a second layer of etched alloy electrode net with the mesh number of 40-80 and a third layer of etched alloy electrode net with the mesh number of 20-40, carrying out vacuum sintering at 800-1400 DEG C for 2-5 hours, and finally stirring and drying in a polyethyleneimine aqueous solution. Compared with the prior art, the obtained electrode has the advantages of being low in cost, high in catalytic activity, fast in bubble removal, high in durability and stability and the like, effectively solves many problems of an existing alkaline water hydrogen production electrode, has a wide application prospect in the field of alkaline water electrolysis hydrogen production, can remarkably improve the water electrolysis efficiency and is beneficial to large-scale industrial production.

The utility model belongs to the technical field of rotary switches, and particularly relates to a breaking switch which comprises a shell, a moving contact assembly, a static contact assembly and an arc extinguish chamber. The moving contact assembly comprises a moving contact rotating stand and a moving contact piece. The two ends of the moving contact piece protrude relative to the periphery of the moving contact rotating stand to form moving contact parts. Each group of static contact assemblies comprises at least one group of static contact parts and an elastic part, and each group of static contact parts comprises two static contact plates which form a clamping cavity with an opening; and in at least part of paths of the moving contact rotating stand to the opening position, the moving contact part is located in the arc extinguish chamber. The static contact is arranged to be of a contact structure comprising more than one group of static contact parts with bidirectional elastic clamping force, the thickness of the moving contact can be greatly reduced, the thickness of the longitudinal space of the arc extinguish chamber does not need to be increased, and the moving contact part of the moving contact can extend into the arc extinguish chamber, so that the effect of reliably and quickly breaking a high-voltage arc is achieved, the breaking capacity is improved, and the service life of the arc extinguish chamber is prolonged. And the purpose of high-voltage breaking is achieved.

The utility model relates to a hydraulic tunnel punching and slag removing device which comprises a shell and a drilling barrel connected into the shell. And the front end of the rotating rod is movably connected with a crushing head capable of axially moving and circumferentially rotating along the axis direction of the drilling barrel. The crushing head can axially move and circumferentially rotate along the axis direction of the drilling cylinder; the drilling barrel rotates to conduct drilling operation on the hydraulic tunnel, fragments generated by drilling are collected in the drilling barrel, the crushing head axially moves in the axis direction of the drilling barrel and rotates in the axis direction of the drilling barrel, disintegrating slag generated by drilling can be rapidly crushed and cleaned at the same time in the drilling process, continuous drilling operation is achieved, and the construction efficiency of drilling operation on the hydraulic tunnel is greatly improved.

The invention relates to preforming equipment for producing a carbon fiber badminton racket, which is applied to the field of badminton racket forming. The preforming equipment comprises a box body; the support is fixedly connected to the outer wall of the bottom of the box body, a top plate is fixedly connected to the outer wall of the top of the box body, through grooves are formed in the top of the box body and the top of the top plate, and conveying belts are arranged in the through grooves; and the first carbon fiber strips are distributed at the top of the conveying belt at equal intervals, and a protection plate is fixedly connected to the outer wall of the top of the top plate. By the adoption of the conveying belt and the forming assembly, automatic preforming of the carbon fiber badminton rackets can be achieved, manual intervention is not needed in the whole forming process, the forming efficiency of the carbon fiber badminton rackets is effectively improved, and by the adoption of the rotating shafts, the pressing grooves and the positioning grooves, in the process that the forming assembly drives the extrusion rollers to move, the forming efficiency of the carbon fiber badminton rackets is improved. And the first carbon fiber strip can be limited when moving under the combined action of the positioning groove and the pressing groove.

The invention discloses a diluent for blood cell detection, the diluent comprises a buffer solution, an osmotic pressure regulator, a preservative and a stabilizer, the concentration of the buffer solution is 5-100 mM, the osmotic pressure regulator accounts for 0.1-2% by mass, the preservative accounts for 0.01-0.05% by mass, the stabilizer accounts for 0.0001-0.05% by mass of the diluent, and the pH value of the diluent is 7.4-7.8; according to the invention, the buffer solution, the osmotic pressure regulator and the preservative in the range are compounded, so that the formed diluent has excellent chemical and physical properties; by adding the stabilizer, the diluent can keep stable for a long time, the influence of micron-sized bubbles on detection is effectively reduced, and the detection accuracy and precision are improved.

The invention relates to the technical field of transportation equipment, and discloses an automatic transfer device and a transfer method for a pastry production line, the automatic transfer device comprises a transportation table, the transportation table comprises a transportation belt, a shunting device is arranged on the transportation belt, an inclined moving device is arranged on one side of the shunting device, and an arrangement device is arranged on one side of the inclined moving device; the flow dividing device comprises a plurality of evenly-distributed flow dividing pieces, and adjusting assemblies used for adjusting the distance between the flow dividing pieces are arranged on the flow dividing pieces. The inclined moving device comprises a front toothed belt; the arrangement device comprises a supporting plate and rear toothed belts arranged at the top and the bottom of the supporting plate. According to the pastry transfer device, through the arrangement of the multiple flow dividing pieces, articles stacked on the conveying belt are conveyed one by one, through the arrangement of the inclined moving device and the arrangement device, the scattered articles are arranged in order, and the problem that in the pastry transfer process, due to the fact that the conveying belt continuously moves, the pastry is difficult to transfer is solved. And therefore, the operation that the pastries are manually and orderly placed on the conveying belt is difficult to realize is solved.

The invention discloses a blasting deicing device with a guide cylinder and a deicing method, relates to the technical field of overhead cable deicing, aims at improving the deicing operation of an overhead cable, and particularly aims at improving the deicing operation of the overhead cable by taking impact force generated in blasting action as basic power for blasting deicing. The method is characterized in that an upper clamping frame and a lower clamping frame are optimized to independently fix the overhead cable, and instant impact force generated when blasting filler is ignited is applied to the overhead cable, so that the overhead cable swings automatically, and the purpose of naturally shaking off ice covering the overhead cable is achieved. In the whole process, the single overhead cable in the same section can be quickly deiced, the operation difficulty is relatively low, power failure treatment is not needed, on this basis, the eccentric mode between the V-shaped groove in the lower buffer pad and the guide cylinder is further optimized, and the operation efficiency is improved. And by combining the thickness of the ice layer, the overall mounting mode and the linkage in the two actions of hoisting and mounting are changed, so that the deicing effect is adaptively improved, and the operation steps are simplified.

The invention relates to the technical field of all-terrain vehicles, and discloses an all-terrain vehicle frame with a power battery pack having an emergency separation function and an assembly process of the all-terrain vehicle frame. The battery body is connected with a vehicle frame through the emergency separation type damping mounting structure, and the mounting structure comprises a connecting assembly and two sets of locking structures. Wherein the locking execution assembly is provided with an elastic locking piece and a penetrating connecting rod, the driving assembly comprises a rotating pressing piece, a pressing rod and an anti-collision rod, and the anti-collision rod is integrated with a vehicle body side covering piece and is provided with a prefabricated breaking point. The invention further provides a corresponding assembly process which comprises the four steps of connecting assembly preassembling, buffer system installing, locking mechanism assembling and battery body installing, and the assembly quality is ensured by controlling parameters such as specified torque, pre-compression amount and pre-pressure. Through the emergency separation type damping installation structure and the integrated anti-collision design, the safety and the structural stability of the frame are improved.

The utility model belongs to the technical field of lifting appliances for steam turbine overhaul, and particularly relates to a multifunctional lifting appliance for steam turbine overhaul. Comprising a cross beam, a vibrator is installed on the upper top face of the cross beam, two fixing lifting lugs are welded to the upper top face of the cross beam, a sliding groove is formed in the bottom end of the cross beam, two strip-shaped holes communicated with the sliding groove are formed in the upper portion of the cross beam, jackscrew bolts are slidably connected into the strip-shaped holes in a penetrating mode, fixing blocks slidably connected into the sliding groove are connected to the jackscrew bolts in a threaded mode, and two adjusting lifting lugs are slidably connected into the sliding groove. Four positioning plates are welded to the bottom end of the cross beam, and a plurality of positioning holes are formed in the positioning plates. According to the utility model, hoisting of a steam turbine rotor, taking-out of a partition plate and hoisting of the partition plate can be completed, the partition plate does not need to be manually knocked when being taken out, the partition plate is prevented from being damaged by manual knocking, the operation is simple, the working efficiency is high, and the safety is high.

The bamboo partition removing high-speed vibration cutter comprises a vibration cutter head and a mandrel, the mandrel comprises a rod body and a piston, the piston is installed at one end of the rod body, an air chamber hole is formed in the axis of the end, away from the rod body, of the piston, and a first ventilation hole and a second ventilation hole are sequentially formed in one side of the inner wall of the air chamber hole in the axial direction; an air chamber matched with the piston and a center hole matched with the rod body are formed in the vibration tool bit, an exhaust hole communicated with the outside is formed in the inner wall of the center hole, the piston is installed in the air chamber hole in a sliding mode and divides the air chamber hole into a front air chamber and a rear air chamber, an air inlet channel is formed in the rod body, one end of the air inlet channel is communicated with the outside, and the other end of the air inlet channel is communicated with the inside of the rod body. The other end of the air inlet channel is communicated with the rear air chamber; by injecting high-pressure gas, the vibration tool bit can achieve high-speed reciprocating acceleration and deceleration motion at the end of the shaft core, the inertia of the vibration tool bit motion is beneficial to rapid crushing of bamboo partitions, and the discharged high-pressure gas can discharge the crushed bamboo partitions out of a bamboo tube.

The utility model discloses a side push type punch forming die which comprises an upper die base and a lower die base, a die handle is arranged in the middle of the upper die base, a pressing plate is fixedly connected to the bottom of the die handle, a fixing piece is fixedly connected to the outer surface of the lower end of the pressing plate, a first elastic element is fixedly connected to the middle of the pressing plate, and a male die is fixedly connected to one end of the first elastic element. A movable part is slidably connected to one side of the fixed part, a cutter and a second elastic element are fixedly connected to the lower surface of the movable part, a stamping plate is fixedly connected to one end of the second elastic element, a female die is fixedly connected to the middle of the upper surface of the lower die base, and inclined extrusion parts are fixedly connected to the upper surfaces, close to the two sides, of the lower die base. By means of the sliding groove in the fixed piece, the movable piece is matched with the inclined extrusion piece when descending, then the stamping plate bends a workpiece, when the workpiece is bent to a certain degree, the fixed block continues to press downwards to enable the cutter to cut off redundant materials of the workpiece, the working procedures of the workpiece are effectively reduced, and meanwhile the working efficiency is improved.

The utility model discloses a stair formwork support which comprises a connecting cylinder, internal thread cylinders are rotationally arranged at the two ends of the connecting cylinder, telescopic threaded rods are arranged in the internal thread cylinders in a threaded fit connection mode, and locking assemblies for locking the internal thread cylinders and the connecting cylinder are arranged between the internal thread cylinders and the connecting cylinder. The locking assembly comprises a plurality of clamping bases arranged at the end of the connecting cylinder, clamping grooves are formed in the clamping bases, a plurality of rotating blocks are arranged in the inner threaded cylinder in a hinged mode, and swing threaded rods are arranged on one sides of the rotating blocks. A connecting piece in the prior art is replaced by the telescopic threaded rod, the fixing cylinder, the inserting cylinder, the hinge base and the top base, the connecting base is connected through the telescopic threaded rod and the connecting cylinder to form the stair formwork support, and the telescopic threaded rod can be conveniently and telescopically adjusted relative to the connecting cylinder.

The utility model relates to the technical field of cleaning devices, and discloses an ultrafiltration membrane cleaning device which comprises a cleaning box and a partition plate bolted to the inner wall of the cleaning box, and further comprises a mounting frame slidably arranged on one side of the surface of the cleaning box, a stepping motor is bolted to the top of the mounting frame, an output shaft of the stepping motor is fixedly connected with a driving shaft, and the driving shaft is fixedly connected with an output shaft of the cleaning box. The other end of the driving shaft is in bolted connection with a reciprocating threaded rod, the surface of the reciprocating threaded rod is in threaded connection with a moving seat, and a linkage mechanism is arranged on one side of the driving shaft. The stepping motor, the driving shaft, the reciprocating threaded rod, the moving seat, the linkage mechanism, the spur gear and the spur gear ring are matched for use, so that stains attached to the ultrafiltration membrane can be quickly separated, the time required for cleaning the ultrafiltration membrane in a pickling solution is shortened, and under the matching of the propelling mechanism and the mounting frame, after the ultrafiltration membrane is cleaned in the pickling solution, the cleaning efficiency of the ultrafiltration membrane is greatly improved. The ultra-filtration membrane does not need to be manually placed in clear water by a worker, so that the workload of the worker is reduced.

The invention discloses an ice adhesion strength testing device suitable for a lead, and relates to the technical field of power transmission lead maintenance, the ice adhesion strength testing device comprises a supporting unit, the supporting unit comprises a base, supporting frames, an adjusting rail and a bearing frame, the supporting frames are symmetrically fixed at the top of the base, two ends of the adjusting rail are respectively fixed with the tops of the supporting frames at two sides, and the bearing frame and the adjusting rail are arranged in parallel; two ends of the support frame are movably connected with the support frames on two sides; the testing unit comprises a cooling table, an icing mold and a bonding strength detector, the cooling table is fixed at the bottom of the bearing frame, the icing mold is movably mounted at the top of the bearing frame, and the bonding strength detector is detachably fixed at the top of the bearing frame; and the fixing unit comprises a width adjusting clamp and a tightening clamp, the width adjusting clamp is symmetrically and movably installed on the adjusting rail, and the tightening clamp is movably installed at the top of the width adjusting clamp. The problems that according to an existing testing device, when wires of different models are tested, fixing clamps need to be disassembled and assembled frequently, and the operation process is tedious are solved.

The invention relates to the technical field of boarding ladders, and discloses a boarding ladder capable of being automatically unfolded, which comprises a ladder body part and a pedal part, the ladder body part comprises a ladder body, and the ladder body is connected with an external ship body through an electric rotating seat arranged at the top of the ladder body; the pedal part comprises pedal bodies, the two ladder bodies are symmetrically distributed with the pedal bodies as the center, and the ends of the pedal bodies are rotationally connected with the interiors of the ladder bodies through rotating shafts; wherein a plurality of groups of protection plates are mounted in the pedal body, and an adjusting piece for adjusting the rotation angle of the pedal body is arranged in the ladder body. The boarding ladder capable of being automatically unfolded can effectively solve the problems that in the prior art, pedals of a boarding ladder are likely to become wet and slippery in rainy and snowy days, the slipping risk of a user is increased, and particularly under the condition that the pedals are frozen, ice and snow on the surfaces of the pedals are stacked, and the materials of the pedals are not appropriate, the slipping risk is further increased.

The present invention belongs to the technical field of circuit board processing, and particularly relates to a laser grooving process for circuit board processing, wherein a circuit board to be grooved is transported to a grooving area through a loading module on a workbench, and the circuit board is adsorbed and fixed by a mobile adsorption unit; a waste edge clamping mechanism is driven to work in the clamping area so that it is clamped to a sub-area of ​​the circuit board to be grooved; a laser grooving system is used to drive a laser drill bit to move to the sub-area to be grooved for grooving, until the grooving of multiple sub-areas to be grooved is completed; after the grooving is completed, the mobile adsorption unit will push the grooved circuit board to rise to the unloading module, and the waste edge after the grooving will be separated from the circuit board by the waste edge clamping mechanism; the laser grooving process of the present invention can not only perform groove cutting processing on the circuit board, but also quickly and safely separate the waste edge formed by the groove cutting from the circuit board, thereby realizing fast and safe laser cutting processing of special-shaped boards.

The positive and negative pressure ultrasonic cleaning system comprises a cleaning tank, an electric control device is arranged on the upper portion of the side wall of the cleaning tank, a plurality of ultrasonic transducers are evenly embedded in the bottom wall of the cleaning tank, the section of the top of the cleaning tank is round, and a frequency modulation ultrasonic generator is installed on the upper portion of the side wall of the cleaning tank. The electric control device is connected with the frequency modulation ultrasonic generator, and the frequency modulation ultrasonic generator is connected with the ultrasonic transducers through wires; the electric control device is connected with a display screen; the cleaning tank is connected with a negative pressure aeration box through a cleaning liquid exchange mechanism, a positive pressure generation structure is arranged at the top of the cleaning tank, and a negative pressure generation structure is arranged at the top of the negative pressure aeration box. The invention further discloses a corresponding cleaning method. The device has the advantage of cleaning after negative-pressure degassing, the cleaning efficiency and the cleaning effect are improved through positive-pressure cleaning, gas dissolved in cleaning liquid is rapidly removed through negative-pressure aeration, standing waves are eliminated through frequency conversion so as to enhance the cleaning uniformity, and the cleaning effect is improved. Standing waves are generated through fixed frequency, and the cleaning effect on the part, with most dirt, of a workpiece is enhanced through an antinode on the premise that power is not increased.

The invention provides a flexible clamping jaw for a spacer mounting robot and a using method of the flexible clamping jaw, and relates to the technical field of spacer mounting, the flexible clamping jaw comprises a mounting base, a sliding base, a rotating device, a rotating joint, power equipment and a pressing clamping jaw, the mounting base is mounted at the output end of the mounting robot, and the sliding base is slidably connected to the mounting base; the input end of the rotating device is connected to the sliding base, the output end of the rotating device is connected to the rotating connector, one side of the rotating connector is connected with the power equipment, and the pressing clamping jaw is connected to the output end of the power equipment and used for clamping or disengaging from the chuck. According to the spacer clamping device, the rotating and sliding component is connected with the pressing clamping jaw, the spacer clamping device has multiple degrees of freedom and can clamp a clamping head of a spacer from all directions, the pressing clamping jaw can be directly moved to a deviation position through the rotating and sliding component, and the clamping effect is good; the pressing clamping jaw can clamp the chuck, and after the chuck is fixedly connected with the split conductor, the chuck can be quickly separated from the split conductor through power equipment, so that the installation operation is relatively flexible.

The invention relates to a hydrated borate micromolecule with a boron-nitrogen coordination bond, a polyurethane elastomer material and a preparation method thereof, and the preparation method comprises the following steps: S1, dissolving and reacting 1, 4-benzene diboronic acid and a polyfunctional group amine compound at room temperature through a solution reaction to form a rigid eight-membered ring intramolecular boron-nitrogen coordination micromolecule NCBW-X; s2, polyester (polycaprolactone, polybutylene terephthalate, polylactic acid and the like) or polyether (polytetrahydrofuran, polypropylene ether polyol and the like) and diisocyanate (isophorone diisocyanate, toluene diisocynate and the like) react in a dry solvent at 80 DEG C by using a catalyst to form a prepolymer; hydrazide and NCBW-X are added into the obtained prepolymer for chain extension; the water resistance and the acid and alkali resistance of the material are enhanced through the boron-nitrogen coordination structure characteristic; and the prepared polyurethane elastomer material has very strong self-repairing efficiency and environmental adaptability.