216results about How to "Less prone to displacement" patented technology

The invention provides a mobile terminal. The mobile terminal provided by the invention comprises a shell; a pickup hole is formed in the shell; a microphone, a circuit board, a waterproof membrane bracket, a waterproof membrane and a sound receiving bracket are arranged in the inner cavity of the shell; the waterproof membrane is stuck on the waterproof membrane bracket and is supported against the pickup hole which is located at the inner sidewall of the shell; the microphone is arranged on the circuit board; a sound receiving through hole which is opposite to the waterproof membrane is formed in the waterproof membrane bracket; the sound receiving bracket is connected with the shell; the sound receiving bracket is provided with a through hole; one end of the through hole is opposite to the sound receiving through hole of the waterproof membrane bracket while the other end thereof is opposite to the receiving end of the microphone, so that a sound conduction channel is formed between the pickup hole and the receiving end of the microphone; and the circuit board is electrically connected with the microphone to drive the microphone to receive sound. According to the mobile terminal, a microphone sealing and waterproof structure with good sealing and high reliability can be realized.

Disclosed is a light-emitting board welding and fixing device. The light-emitting board welding and fixing device comprises a rotary disc, a positioning disc and a buckling assembly, wherein the positioning disc is rotably arranged on the rotary disc. The face, away from the rotary disc, of the positioning disc is a bearing face used for bearing a PCB, and the bearing face is provided with a plurality of poisoning holes, wherein the positioning holes and LEDs can be connected in a clamped mode. When a light-emitting board is manufactured, the LEDs are placed on preset positions of the PCB, the PCB is placed on the positioning disc, and the buckling assembly is rotated to compress the PCB to the positioning disc and clamp the LEDs into the positioning holes. In the welding process, the positioning disc is rotated so that all the LEDs can be welded to the PCB. Because the PCB is compressed to the positioning disc, and the LEDs are clamped into the positioning holes, the LEDs do not move easily in the welding process, operators do not need to position the LEDs again, and welding efficiency is improved.

The invention relates to a filter screen structure of an indoor unit of a low-static pressure type air-conditioner, which is arranged on an air returning port at the air inlet side of the indoor unit for filtering dust and suspended matter in air. The filter screen structure comprises a filter screen and a frame, wherein a plurality of elastic clamping parts are arranged on the frame of the filter screen which is fixed on the air returning port of the indoor unit through the clamping parts. The fixed structure of the filter screen is arranged on the filter screen per se and has simplicity and easy realization so that material cost and labor cost required in production can be reduced; and when the filter screen of the indoor unit is installed, as long as the clamping parts are deformed, a shell of the indoor unit can be clamped by the filter screen, and overlarge operation space does not need to be occupied in the installation process so that the filter screen has more convenient installation and disassembly. Furthermore, a plurality of elastic contacts are fixed between the filter screen and the shell, and the filter screen is not easy to generate shifting and deformation in the using process of the air-conditioner, thereby ensuring the effects of filtration and dust removal of the filter screen when in use.

The invention discloses an automatic inductor winding device capable of controlling winding density. The automatic inductor winding device specifically comprises a base, a workbench, a coil placing frame, a winding mechanism and a rotating sleeve, wherein the workbench is mounted on one side of the top of the base, a winding wheel is fixed on the other side of the top of the base, a guide wheel ismounted on the base between the winding wheel and the workbench, and a positioning ring is fixed to the side, close to the guide wheel, in the winding wheel through a support. According to the automatic inductor winding device capable of controlling the winding density, the winding mechanism and a driving roller are arranged, the winding mechanism can drive an enameled wire to be wound on a coil,the driving roller clamps the coil and rotates relatively while winding is conducted so as to allow the coil to rotate at a constant speed, and therefore, uniform winding effect is obtained; comparedwith manual winding, the method has the advantages that efficiency is higher, the winding density can be controlled, it is guaranteed that the winding density is consistent, winding displacement is tidier, and winding precision is higher.

The invention relates to the production of politef multiple elastic cushion, which mainly solves the issues of poor elasticity and strength of the politef production, with smooth surface and good sealing performance. It uses glue smelting, pre compression forming, machining the politef cushion using lathe machine tools, overall surface activation, applying sticking glue, sticking the rubber cushion and the politef shell, sulfur forming, and trimming to get the final product. The cushion comprises rubber cushion coated with politef shell with several protruding waterlines.

The invention discloses a cast-in-place pile reinforcement cage module. The cast-in-place pile reinforcement cage module comprises a reinforcement cage and a protection cylinder; the reinforcement cage comprises a main rib and a stirrup; at least two sets of parallel lug ribs are pairwise mounted on the peripheral edge of the main rib; support rods with preset lengths are welded on all the lug ribs; clamping modules are arranged at the end parts of the support rods; multiple fixed bases are welded on the protection cylinder; detachable connecting sleeves are arranged on the fixed bases; and the connecting sleeves and the clamping modules of the support rods are in clamping cooperation to vertically fix the reinforcement cage on the inner side wall of the protection cylinder. The reinforcement cage and the protection cylinder are fixedly connected through the two sets of support rods and the connecting sleeves, so that the verticality of the reinforcement cage can be effectively guaranteed, and the fixing effect of the reinforcement cage is improved; and even if in later concrete casting process, the reinforcement cage is not easy to displace, so that the overall engineering qualityof pile bodies is improved.

The invention discloses a movable power construction infrared monitoring device. The movable power construction infrared monitoring device structurally comprises a back base plate, a first side plate,a fixed buckle, a hydraulic top plate, a second side plate, an infrared monitor, an inversed-U-shaped fixing base, a pin shaft, a fixing shaft, a fixing plate, a stretchable rod, an electric controlbox, a secondary fixing device, a table-shaped base, an upper sliding rod, a hydraulic device, a side handrail and a fixed base plate, and the hydraulic top plate and the fixed base plate are paralleland are vertically welded together through the back base plate. The movable power construction infrared monitoring device is provided with the secondary fixing device, the hydraulic device and the stretchable rod, the hydraulic manner is used for sliding up and down, when the monitoring device breaks down, descended checking is carried out, climbing is not needed, and the working safety and convenience are improved, meanwhile, a traditional fixing manner is adopted by the secondary fixing device for firm installing, the stretchable rod cannot move easily, the stability of the monitoring device is increased, two cameras guarantee that data do not have mistakes, the other camera can run when one camera is damaged, and the camera shooting accuracy is improved.

A bonding wire which has a core material and formed on the core material, a coating layer comprising a metal having a melting point higher than that of the core material and further has at least one of the following characteristics: 1. the wet contact angle of the molten core material with the coating material is 20 degree or more, 2. the curvature radius of a circular arc, which is formed when the bonding wire is allowed to hang down so that the tip thereof contacts with a horizontal plane and the wire is cut at the point being upper from the tip by 15 cm and the cut wire is allowed to fall on the horizontal plane, is 35 mm or more. 3. 0.2 % offset yield strength is 0.115 to 0.165 mN / mum<2>, and 4. the coating layer has a Vickers hardness of 300 or less.

The invention provides a liquid crystal empty box and manufacturing method thereof, a liquid crystal lens using the liquid crystal box empty box. The liquid crystal empty box comprises a first substrate, a second substrate and a support body. The support body is used for maintaining a distance between the first substrate and the second substrate. The support body comprises a first support body made of photopolymerizable materials or photolysis materials. A second support body is located in the first support body, and is used for bracing the first support body. Because the outer layer of the support body is made of photopolymerizable materials and photolysis materials which have adhesive force, after the outer layer is fixed to the first substrate, the displacement is not prone to happen. The second support body located at the inner layer is used for exerting a support function to the photopolymerizable materials or photolysis materials to prevent the support body from deformation by external compression. Therefore, a strength requirement of a high size can be achieved with a very small particle size, the problem that in a big thick box device, it is needed to establish a large particulate size support body which causes the displayed appearance of light spots and black spots is solved.

The invention relates to a sand mold casting self-locking sand box, and aims to solve the problems that I, casting parts have quality problems due to the fact that an upper sand box and a lower sand box are skewed since the positions of the upper sand box and the lower sand box do not correspond accurately after manual butting during the traditional sand mold casting, and II, uncooled metal liquidis deformed at a certain degree and the product quality is influenced due to the fact that a sand mold has a certain heat insulating effect on the metal liquid and sand mold boxes tend to be impactedin subsequent operation before the metal liquid is cooled, and generate displacement or vibration relative to each other when the metal liquid is poured into the sand mold after butting of the uppersand box and the lower sand box. According to the sand box provided by the invention, the upper sand box and the lower sand box are tightly connected together through linked self-locking structures, so that displacement between the upper sand box and the lower sand box is prevented, and the production quality of the casting parts is ensured.

The invention discloses a wire frame sphere joint positioning rapid adjustment device. The wire frame sphere joint positioning rapid adjustment device comprises a base plate, a threaded round rod anda supporting steel pipe. A circular fixing hoop steel pipe is arranged on the surface of the base plate, and the threaded round rod is fixed to position, in the vertical axis direction of the fixing hoop steel pipe, of the base plate. Two curved plates are arranged on the outer side of the threaded round rod, and force transmitting plates are separately arranged on the upper and lower ends of thecurved plates. The supporting steel pipe is fixed to the force transmitting plate at the upper end. A movable hoop steel pipe is arranged between the supporting steel pipe and the fixing hoop steel pipe. Three hexagonal lock nuts are arranged on the threaded round rod, two of the hexagonal lock nuts are located between the two force transmission plates, another hexagonal lock nut is located belowthe force transmission plate at the lower part, and the hexagonal lock nuts are used for height adjustment and locking. The structural design of the wire frame sphere joint positioning rapid adjustment device is reasonable, and the upper and lower adjustment and rapid positioning and unloading can be realized, the assembly construction efficiency of a sphere joint wire frame is improved, the eccentric compression of the threaded round rod is reduced, the relative offset is not generated, and the fixation reliability is high.

The invention discloses an optical fiber electric field sensor, which belongs to a photoelectric measuring device and measures an electric field based on the photoelectric effect. The optical fiber electric field sensor comprises a collimating lens, a polarizer, a Lambda / 4 wave plate, an electro-optic crystal, an analyzer, and a coupling lens, which are sequentially placed on an optical path. The optical elements are embedded onto an organic glass substrate, the organic glass substrate is provided with grooves matched with the embedded optical elements in shape and order, the optical elements are adhered together by optical adhesive, and the optical elements and the organic glass substrate are adhered together by optical adhesive. The optical elements are not easy to shift. The collimating lens and the coupling lens are on the same line in the same plane. The structure is stable. The lenses can be aligned with each other easily. The coupling efficiency is high. Connection and debugging of an optical path system are convenient. The reliability and stability of the sensor are greatly improved. The process is greatly simplified.

The invention provides a stamping die for aluminum plate mounting holes. The stamping die comprises a die frame component, a punch assembly, a die core assembly, a propelling assembly, a pressing assembly and an aluminum plate; the die frame component is fixed to a punch press operation table top and provided with a lower die base and an upper die base; the punch assembly capable of quickly replacing a punch is arranged on the lower portion of the upper die base; the die core assembly capable of converting combined die cores with different specifications is arranged at the position, corresponding to the punch assembly, in the lower die base; the propelling assembly capable of moving forwards and backwards is further arranged at the front end of the lower die base; and the propelling assembly is provided with the pressing assembly capable of achieving automatic lateral positioning, the aluminum plate is pressed in the moving process, and moving is prevented. According to the punching die, by designing the punch assembly capable of quickly replacing and the die core assembly capable of quickly converting, the working efficiency is greatly improved, and by means of the propelling assembly capable of moving automatically and the pressing assembly, it can be guaranteed that the aluminum plate cannot shake in the punching process and accurately moves to a punching station, and the precision is higher.

The invention discloses a fish head removing device, which relates to the technical field of fish processing, and comprises a box body, a bracket, a driving shaft, a first driven shaft, a second driven shaft, a first transmission conveying assembly, a second transmission conveying assembly, a driving part, a wafer cutting machine, a receiving hopper, a plurality of fish body grooves and a plurality of fish head grooves; wherein the driving shaft, the second driven shaft and the first driven shaft are sequentially and rotationally installed in the box body, the multiple fish body grooves are sequentially installed on the first transmission conveying assembly, the fish head grooves are sequentially installed on the second transmission conveying assembly, and the wafer cutting machine is located above the side, close to the first driven shaft, of the second driven shaft and can stretch into the cutting gap; the receiving hopper is fixed to the inner wall of the side, provided with the second transmission conveying assembly, of the box body, and a discharging opening is formed in the side wall of the box body. The device is high in cutting capacity, small in fish extrusion, low in requirement for the body type of the freshwater fish, suitable for cutting most of the freshwater fish and wide in application range, and the fishes are not prone to move.

The invention relates to the field of a battery, and specifically discloses a battery module. The battery module comprises a battery pack and an external fixed body, wherein the battery pack is formed by a plurality of cylindrical single batteries arranged in parallel; the external fixed body is fixed outside the battery pack; the external fixed body comprises a first side surface and a second side surface; the first side surface is provided with a first concave-convex structure; and the second side surface is provided with a second concave-convex structure which can be jogged with the first concave-convex structure of the adjacent battery module. According to the battery module provided by the invention, by setting the concave-convex structures on the first and second side surfaces, the concave-convex structures of the adjacent battery modules can be jogged mutually, so that all battery modules in the battery assembly can be formed into a whole body; when the whole body suffers from shaking or vibration, the battery modules are not displaced easily, so that the battery modules are firm and reliable in fixation; and in addition, by virtue of the concave-convex structures, the dead-angle positions of the cylindrical single batteries can be fully utilized, so that the space in the battery module is fully utilized, and the space utilization rate is improved. The invention also provides a battery assembly comprising the battery module.

The invention discloses a rapid assembly type flow divider and belongs to the technical field of pipes or flow dividing devices. The rapid assembly type flow divider comprises a flow dividing pipe holding piece or further comprises a fixing pipe holding piece, wherein the flow dividing pipe holding piece is buckled and connected to the outer wall of a main pipeline through connecting pieces and provided with a flow dividing opening corresponding to a fluid outlet in the main pipeline, and the flow dividing opening is provided with a flow dividing branch pipe; and the fixing pipe holding piece is correspondingly buckled and connected with the flow dividing pipe holding piece and not provided with a flow dividing opening. The rapid assembly type flow divider is composed of the upper flow dividing pipe holding piece and the lower fixing pipe holding piece; and when the flow divider is used, holes only need to be poked in the main pipeline, the upper flow dividing pipe holding piece and the lower fixing pipe holding piece are well placed, the effect that the flow dividing opening in the flow dividing branch pipe, the fluid outlet in the main pipeline and an opening in a flow dividing sealing pad are corresponding is ensured, and the upper flow dividing pipe holding piece and the lower fixing pipe holding piece are buckled and connected to the main pipeline through the connecting pieces, so that the rapid assembly type flow divider is savable in time and effort, efficient and convenient.

The invention relates to a connector of steel support, which comprises: a connector and an adjusting tile. Wherein, one end of connector has a positive arc head (2) whose outer side is connected to the anchor plate (8), and another head has a passive arc head (1) whose outer side is connected to the anchor plate (8); the concave and convex surfaces of adjusting tile are both arc surface, while the positive arc head (2) is the convex surface and the passive arc head (1) is the concave surface, with the same diameter. The method comprises: inserting the positive arc head (2) into the passive one, which are connected by using connecting bolt through the anchor plate (8). And by adding adjusting tile (7) between positive arc head (2) and passive arc heads (1), the adjustment can be realized. The invention has simple operation and adjustable longitudinal arc without displacement.

The invention relates to a working method of a rodlike section bar bundling robot. The robot adopts the structure that a frame is provided with an upper arm and a lower arm; an air cylinder I is arranged on the upper arm and is suitable for moving left and right relative to the upper arm; a piston rod I and a connecting rod I in the air cylinder I are suitable for moving vertically; a flexible nail box is arranged at the bottom end of the connecting rod I; a table-board for placing a steel bundle is in sliding fit with the lower arm in a left-and-right manner; an air cylinder II is fixedly arranged at the bottom of the lower arm; a piston II and a connecting rod II at the top of the piston II are arranged in the air cylinder II; a pair of grooves are formed in the top of the connecting rod II; when the connecting rod I and the connecting rod II are aligned and compressed, a nail can penetrate and clench a rubber strip for bundling the steel bundle; a compressing block which is suitable for moving relative to the connecting rod II for clamping the end part of the rubber strip is arranged on the right side of the connecting rod II. The rodlike section bar bundling robot provided by the invention is free of false wires in the bundling process and the rolled steel bundled is prevented from being loosened due to shift.

The invention discloses an intelligent energy meter auxiliary terminal leaf-spring-type wire connector, which comprises an insulation fixed plate, wherein two ends of the insulation fixed plate are respectively fixedly provided with an elastic tightening clamp, and the middle part of the insulation fixed plate is provided with a row of metal leaf springs. The insulation fixed plate is a rectangular insulation plastic fixed plate, and the insulation fixed plate is provided with threaded fixed holes to be in thread connection with the elastic tightening clamp and the metal leaf springs. The elastic tightening clamp comprises a soleplate and clamping plates which are arranged on two sides of the soleplate, and the waist positions of the clamping plate are retracted so as to enable the upper ends of the two clamping plates to form a V-shaped opening structure. One end of each metal leaf spring is provided with a 20-DEG slope, and the top end of the slope is connected with a platform. The wire connector is simple in structure, low in cost and capable of improving the meter calibration quality and efficiency.

The invention relates to the field of hot-melt pressure-sensitive adhesives for packaging films, and particularly discloses a hot-melt pressure-sensitive adhesive for a cotton packaging film and a preparation method of the hot-melt pressure-sensitive adhesive. The invention relates to a hot-melt pressure-sensitive adhesive for a cotton packaging film. The hot-melt pressure-sensitive adhesive is prepared by mixing a thermoplastic elastomer, tackifying resin, a plasticizer, an antioxidant and a stabilizer, the thermoplastic elastomer is prepared from a styrene-isoprene-styrene block copolymer and a styrene-butadiene-styrene block copolymer, and the mass mixing ratio of the styrene-isoprene-styrene block copolymer to the styrene-butadiene-styrene block copolymer is 1 to (0.1 to 0.2). The hot-melt pressure-sensitive adhesive for the cotton packaging film can keep good and stable high and low temperature aging resistance and ultraviolet aging resistance at the same time, and is excellent in overall weather resistance, so that the bonding position of the packaging film is not prone to displacement and warping.

The invention discloses a high-shearing and high-bonding coating material and a preparation method thereof. The coating material is prepared from the following components in parts by weight: 0.4-0.6 part of powdery butadiene-acrylonitrile rubber, 0.2-0.3 part of a flame retardant, 0.2-0.3 part of a stabilizer, 3-5 parts of an asphalt modifier, 15-25 parts of asphaltene powder, 25-35 parts of matrix asphalt and 35-55 parts of a solvent. The coating material disclosed by the invention is reasonable in formula and simple in preparation method, has relatively high shearing strength between layer and bonding force, is good in low-temperature flexibility, free of cracks at -25 DEG C, strong in waterproof performance and great in construction temperature range, and the construction season is prolonged, and moreover, the coating material can be smeared, sprayed or sprinkled under a room temperature condition and is wide in application range.

The invention discloses a drawing process of a phosphatized steel wire for optical cable reinforcement, and belongs to the field of phosphatized steel wires. According to the scheme, the phosphatized steel wire is fixed through a fixing mechanism, so that the phosphatized steel wire is not prone to moving, the influence on subsequent machining is avoided, then a sliding mechanism drives a lubricating box to move back and forth, lubricating treatment of the phosphatized steel wire is facilitated, and the production efficiency is improved. The lubricating and wrapping mechanism extrudes a hollow lubricating cylinder through carbon dioxide to release wire drawing powder to lubricate the hollow lubricating cylinder, and meanwhile, a wrapping brush wraps the outer end of the phosphatized steel wire with the released wire drawing powder, so that the phosphatized steel wire is fully lubricated by the wire drawing powder, the uniform lubricating effect is achieved, the lubricating effect of the phosphatized steel wire is effectively improved, and the service life of the phosphatized steel wire is prolonged. Meanwhile, waste of the wire drawing powder is reduced, the resource utilization rate is increased, the remaining material collecting mechanism adheres the falling wire drawing powder through cooperation of static electricity generated between a small touch ball and a fluff layer and an adhesion layer, the falling wire drawing powder is not prone to scattering everywhere, workers can conveniently clean the mounting base, and the cleaning effect is enhanced.

The invention provides a vibration cable, which comprises a sheath layer, a shielding layer, a polyester film layer, an insulator, a signal line and bare conductors, wherein the shielding layer, the polyester film layer and the insulator are coaxially sleeved with the sheath layer in sequence from outside to inside; a parallel integrated signal line is arranged at the center of the insulator; grooves are formed in the outer edge of the insulator at two ends of the parallel integrated signal line; a rigid lining laminated with the wall of each groove is arranged in the groove; each bare conductor is sleeved with one rigid lining; the cross section area of each rigid lining is greater than that of the corresponding bare conductor; and arc-shaped internal shielding layers are embedded into the insulator between the parallel integrated signal line and the bare conductors in a manner of mirror symmetry separately. The vibration cable has the advantages and beneficial effects that the free movement spaces of the bare conductors are ensured and the influences of bending and extruding of the cable are avoided; mutual interference between the two bare conductors and the interference from anexternal signal are effectively reduced by the arc-shaped internal shielding layers and the reliability of the cable is ensured; and meanwhile, multiple signals can be transmitted through the four-core signal line.

The invention relates to a memory bank fixing assisting structure which comprises an installation base. A memory slot is formed in the installation base, fixing protruding blocks are fixedly connected with the two sides of the installation base respectively, one fixing protruding block is fixedly provided with a first fixing column, and the other fixing protruding block is fixedly provided with a second fixing column; the end, away from the fixing protruding blocks, of the first fixing column is rotationally connected with a pressing rod, and the lower end of the pressing rod is provided with a groove used for pressing the upper end of a memory bank; the second fixing column is provided with a threaded hole. The structure further comprises a tightening screw matched with the threaded hole. An open groove matched with the end of the pressing rod is formed in the side face of the end of the second fixing column and communicated with the threaded hole. After the memory bank is inserted into the memory slot, the pressing rod is rotated to press the upper portion of the memory bank downward, the upper end of the memory bank is clamped into the groove and then fixed through the tightening screw and the threaded hole, operation is convenient, reliability is high, displacement is not likely to happen, force needed for insertion is reduced, damage to a main board is avoided, the overall structure is simple, and cost is low.

The invention relates to the technical field of PCB processing, and particularly discloses a convenient-to-operate PCB welding platform, which comprises a workbench main body, a table surface, an overturning plate, a tool rack and a storage box, wherein the table surface comprises a table surface plate, a table surface frame and a blocking sheet lining rod, the table surface plate is fixedly connected to the front surface of the table surface frame close to the top, rotating shafts are fixedly connected to the centers, close to the top, of the left and right sides of a rotating plate frame, and the overturning plate is rotationally connected to the position, close to the bottom, of the inner wall of the table surface frame through a rotating shaft. According to the invention, the table surface is rotatably connected with the overturning plate through the rotating shaft, so that the purpose that the overturning plate can be flexibly turned over is achieved, the switching function of rapidly switching PCB welding tools is achieved, the space is saved, and the working efficiency and the welding precision are improved; and rotation of the overturning plate is relieved or limited by opening and closing the spring positioning pin, so that switching of rapid fixing and relieving of rotation limitation of the overturning plate is achieved, and the overturning plate can be rapidly and flexibly switched.

The invention discloses an intelligent bedroom bed with the adjustable angle. The intelligent bedroom bed with the adjustable angle comprises a circular wood bed plate, a bed mattress and a bed body base plate, wherein bed plate outer side safe edges are fixedly connected to the outer side of an upper side panel of the circular wood bed plate; the bed mattress is arranged on the circular wood bedplate between the bed plate outer side safe edges; a bed plate bottom part support ring is fixedly connected to the outer edge part of a lower side panel of the circular wood bed plate; a support connecting alloy rail ring is perpendicularly connected to one side panel, far away from the circular wood bed plate of the bed plate bottom part support ring; a rail ring embedded tooth row is fixedly connected to the circular center, close to the circular wood bed plate, of the support connecting alloy rail ring, and the rail ring embedded tooth row is connected with a tooth row embedding gear in anembedding way; the tooth row embedding gear is inserted onto a gear fixing shaft. The invention provides the novel and practical intelligent bedroom bed with the adjustable angle, which is novel in structure and convenient to use.

The invention discloses a cross-linked polyethylene insulated multi-core coaxial power cable, which comprises a cable core, wherein a gap of the cable core is filled with a PVC (polyvinyl chloride) insulating material; an outer conductor is arranged outside the cable core, and is lapped by a rock wool heat insulation layer with the thickness of 0.48 to 0.9 mm; the rock wool heat insulation layer is extruded by an aluminum sheath with the thickness of 1 to 2 cm; the cable core is formed by three insulated wire cores and a triangular reinforcing rib for connecting the three insulated wire cores. The cross-linked polyethylene insulated multi-core coaxial power cable has the advantages of high insulativity, flame resistance, strong tensile strength and the like.

The invention discloses an end grinding device for screw rod machining, and relates to the technical field of screw rod machining. The end grinding device for screw rod machining comprises a base, a horizontal plate is fixedly mounted at the top end of the base through supporting legs, a lifting box is fixedly mounted at the top end of the horizontal plate, and vertical boxes are fixedly mounted on the upper portions of the two sides of the lifting box; a separating plate is fixedly mounted in an inner cavity of the lifting box, a sliding rod is fixedly mounted between the top end of the separating plate and a top plate o the lifting box, and the surface of the sliding rod is slidably connected with a lifting plate; and a first lifting rod is fixedly arranged in the lifting plate, the top end of the first lifting rod penetrates through the top plate of the lifting box and extends above the lifting box, and a first spring is fixedly mounted between the bottom end of the lifting plate and the top end of the separating plate and located on the lifting rod. The side face of a screw rod is clamped by clamping plates through a first cushion plate, the first lifting rod, the lifting plate, clamping rods and other elements, and thus the screw rod can be quickly fixed, time is saved, and work efficiency is improved.