53results about How to "Increase connection force" patented technology

The invention discloses a cover plate assembly and a battery, and relates to the technical field of batteries, the cover plate assembly comprises a cover plate, a pressing ring and a pole, and the cover plate is provided with a mounting hole arranged in a front-back penetrating manner along the thickness direction of the cover plate; the pole is arranged in the mounting hole in a penetrating manner; the pressing ring is arranged on the front side of the cover plate and sleeves the pole, and the pressing ring is welded and fixed with the peripheral side of the pole; the width of the pressing ring is W, the thickness of the pressing ring is H1, the diameter of the pole is D, and the area of the front end face of the pole is S. By controlling the width W of the pressing ring and the diameter D of the pole, the pressing ring can provide enough welding area, and the welding mark can reach enough connection width, so that stable connection between the pole and the pressing ring is ensured; by controlling the thickness H1 of the pressing ring and the area S of the front end face of the pole, the welding mark can reach enough connection depth, the connection force of the welding mark is improved, and the problem of welding failure of the pole and the pressing ring is effectively avoided.

The utility model belongs to the technical field of geogrids, and particularly relates to a reinforced geogrid which comprises first grid strips and second grid strips. A plurality of first grating strips are arranged in parallel at intervals; a plurality of second grid strips are arranged in parallel at intervals in the length direction of the first grid strips; the first grid strips and the second grid strips are perpendicularly staggered to form a plurality of grid chambers, reinforcing parts are arranged at the intersections of the first grid strips and the second grid strips, the thickness of the reinforcing parts is larger than that of the first grid strips and that of the second grid strips, and ground gripping structures and anti-skid structures are arranged on the upper faces and the lower faces of the reinforcing parts correspondingly. The ground gripping structure is used for increasing the ground gripping force of the bottom of the geogrid, and the anti-skid structure is used for increasing the friction force between the top of the geogrid and soil. The strength of the geogrid can be enhanced through the thickened reinforcing part, the geogrid is resistant to tear and deformation, the ground gripping structure and the anti-skid structure can enhance the connecting force between soil on the surface of the geogrid and the geogrid, and the overall stability of a slope can be improved through the geogrid.

The invention discloses an inorganic / organic nano composite plugging agent, which is prepared from the following raw materials in parts by weight: 0.7 to 3.5 parts of modified nano particles, 10 to 50 parts of alkenyl amide monomers, 0.5 to 3 parts of alkenyl associated monomers, 20 to 50 parts of alkenyl sulfonic acid monomers, 10 to 20 parts of alkenyl cationic monomers and 0.5 to 1.0 part of initiators, the modified nano-particles are formed by carrying out surface modification on nano-particles by adopting a coupling agent. According to the invention, by introducing a flexible polymer chain segment with a proper amount of association, strong adsorption and other effects into rigid nanoparticles, the deformability of the nanoparticles and the connection force between the nanoparticles and a shale stratum are improved, so that the plugging capability of the plugging agent on multi-scale micro-pores and micro-cracks of the shale stratum is improved; and the plugging agent has the characteristics of wide particle size distribution, physical and chemical synergistic plugging effect, good high-temperature stability, simple preparation method, easily available raw materials and the like, and is suitable for drilling leakage of shale formations.

The present invention provides a terminal, a busbar, a motor, an electric power steering system and a vehicle. The terminal includes: a first connecting section; a supporting section, one end of the supporting section is connected to the first connecting section in a turning direction, and the supporting section is provided with at least one supporting surface; a second connecting section, the second connecting section is connected to the other end of the supporting section in a turning direction, and the second connecting section extends in a direction away from the first connecting section, and the first connecting section, the supporting section and the second connecting section are arranged in sequence along the thickness direction of the first connecting section; wherein, along the thickness direction of the first connecting section, the supporting surface is provided on the side of the supporting section away from the second connecting section, so that the supporting surface is suitable for being supported to provide supporting force to at least a part of the supporting section and the second connecting section. The present invention can provide a supporting force toward the female end to the terminal by adding a supporting section and utilizing the supporting effect of the supporting surface of the supporting section, thereby preventing the terminal from being excessively deformed when plugged into the female end, reducing the difficulty of assembly, and thereby improving the assembly yield of the terminal.

The present invention provides a busbar body, a busbar, a motor, an electric power steering system and a vehicle. The busbar body includes: a skeleton; a plurality of busbars, each busbar includes a main body embedded in an annular bracket and a plurality of connecting parts connected to the main body and protruding from the skeleton; wherein the strip-shaped bracket is provided with a slot for accommodating a part of the terminal, the slot is provided with an avoidance notch, the avoidance notch is provided for one end of the terminal to bend and extend and protrude from the slot to connect with the connecting part, the strip-shaped bracket is provided with at least one supporting mating surface for supporting the terminal, at least a part of at least one supporting mating surface is located in the slot, and the connecting part, the supporting mating surface and the entrance of the slot are arranged in sequence along the axial direction of the annular bracket. The present application can provide a supporting force toward the female end to the terminal by adding a supporting mating surface to the strip-shaped bracket, thereby preventing the terminal from being excessively deformed when plugged into the female end, reducing the difficulty of assembly, and thereby improving the assembly yield of the terminal.

The invention provides a composite copper foil and a preparation method thereof, and the preparation method of the composite copper foil comprises the following steps: (1) carrying out corona treatment on the upper and lower surfaces of a PP base film to obtain a surface-treated PP base film; (2) punching along the direction perpendicular to the upper and lower surfaces of the surface-treated PP base membrane to form a plurality of through holes, so as to obtain a porous PP base membrane; (3) the upper surface and the lower surface of the porous PP base film are coated with conductive slurry, conductive film layers are formed, and the conductive slurry comprises acrylic resin and a conductive agent; and (4) electroplating copper on the upper and lower surfaces of the conductive film layer to form a copper film layer and fill the through hole at the same time. Good adhesive force exists between the PP base film and the film layers (the conductive film layer and the copper film layer) in the composite copper foil, and the composite copper foil has excellent conductivity.

The invention discloses a composite copper foil and a preparation method thereof, and relates to the technical field of composite materials. The preparation method of the composite copper foil comprises the following steps: S1. providing a substrate; S2. coating a first liquid on one side or both sides of the substrate, drying, and forming a connecting layer, wherein the first liquid comprises an EVA emulsion, a branched acrylate emulsion, an adhesive, a defoaming agent, and a dispersant; S3. coating a second liquid on the surface of the connecting layer, drying, and forming a catalytic layer, wherein the second liquid comprises nano-metal particles; S4. forming a first copper film layer on the surface of the catalytic layer by chemical copper plating; in the present invention, the connecting layer can effectively improve the connection force between the substrate and the catalytic layer, the catalytic layer can efficiently improve the efficiency of chemical copper plating, and is conducive to improving the uniformity of the formed first copper film layer, and the preparation of the composite copper foil is more efficient and the cost is lower.

This utility model discloses a rockery that is easy to plant, comprising a pool, several rocks, and a sprinkler system. Adjacent rocks are connected by a fixing component containing a grouting cylinder, enhancing the connection and perspective effect. The rocks are irregularly stacked around the sprinkler system, which includes a first water pump, nozzles, and a deflector to achieve water feature landscaping and misting effects. A second water pump delivers water to the top of the rockery. Mounting boxes are embedded in the sides of the rocks, containing planting blocks for planting greenery. The mounting boxes are connected to a humidification component containing a water channel and drip pipes to replenish water for the greenery and create a high-humidity environment. This rockery has a stable structure, offers diverse landscape effects, and facilitates planting and maintenance of greenery.

The utility model relates to the technical field of automobile instrument beam welding processing, and discloses an anti-deformation automobile instrument beam welding clamp which comprises a connecting base, a positioning plate is transversely arranged above the connecting base, an anti-deformation assembly is arranged above the positioning plate, the anti-deformation assembly comprises a first spray head and a second spray head, and the first spray head and the second spray head are arranged on the connecting base. Supporting frames are vertically and fixedly connected to the two sides of the top end of the connecting base correspondingly, and the two sides of the positioning plate are fixedly connected with the tops of the inner sides of the two supporting frames correspondingly. According to the anti-deformation automobile instrument beam welding clamp, through the arrangement of the water diversion disc, the first spray head, the second spray head, the limiting frame and the base, it is ensured that the surface of the connecting base is fully covered, water spraying treatment can be conducted on the welded automobile instrument beam, welding piece deformation is effectively prevented, and the problems that the automobile instrument beam is prone to deformation after being welded, and welding quality is poor are solved. The problems that the forming degree of the automobile instrument cross beam is reduced, subsequent use is affected, the damage rate is increased, and the production efficiency is greatly reduced are solved.

This utility model discloses a supporting vertical rib and steel truss bottom formwork reinforcement assembly for building construction, including a supporting vertical rib disposed at the top of the steel truss bottom formwork: a thickened hollowed-out part is welded to the inner cavity of the supporting vertical rib, and a perforated angle iron is provided at the top of the steel truss bottom formwork. A positioning bolt is threadedly connected to the inner cavity of the perforated angle iron, and the perforated angle iron is fixedly connected to the steel truss bottom formwork by the positioning bolt. A large-diameter bolt is threadedly connected to the inner cavity of the perforated angle iron, and the surface of the rear end of the large-diameter bolt penetrates through the thickened hollowed-out part to the rear side of the supporting vertical rib. By using the combination of the thickened hollowed-out part and the perforated angle iron, this utility model can provide additional support to the inner cavity of the supporting vertical rib and increase the connection force between the supporting vertical rib and the steel truss bottom formwork, thereby achieving the purpose of reinforcing the connection between the supporting vertical rib and the steel truss bottom formwork and making the connection between the supporting vertical rib and the steel truss bottom formwork more secure.

The utility model discloses a radiofrequency ablation electrode needle connected in a crimping mode, which comprises a needle tip, a connecting tube body part and a connecting tube body part, the insulating stepped tube is arranged on the connecting tube body part in a sleeving manner, one end of the insulating stepped tube is provided with a first tube body section, and the diameter of the first tube body section is larger than that of the insulating stepped tube; the core shaft is inserted into the connecting pipe body part, and the core shaft and the connecting pipe body part are fixed in a confining pressure compression joint mode; the outer tube is sleeved on the insulating stepped tube, and the outer tube and the insulating stepped tube are fixed in a confining pressure crimping manner; and the end part of the cable is in contact with the core shaft, a crimping pipe is sleeved on the overlapped part of the cable and the core shaft, and the crimping pipe is fixed in a confining pressure crimping manner. Compared with the prior art, the radiofrequency ablation electrode solves the problem that an existing radiofrequency ablation electrode is large in structure forming difficulty.

The utility model discloses a greenhouse wind -proof reinforcing support, the reinforcement frame is provided with the reinforcing frame in the upper portion and the lower portion both sides of front and back frame, the inside of reinforcement frame is fixed with the reinforcing strip of X type, reinforcement frame and reinforcing strip are screwed on every contacted frame, the lower extreme of frame both sides is fixedly connected with the connecting plate that extends outward, the lower extreme fixedly connected with longitudinal distribution reinforcing nail no.

The utility model relates to the technical field of dolls, and discloses a doll with a magnetic attraction structure, which comprises a doll main body, a base is arranged at the bottom of the doll main body, a support frame is fixedly connected to the side wall of the doll main body, and a stabilizing component capable of being fixed by magnetic attraction is arranged on the outer side of the support frame. The stabilizing assembly comprises a connecting frame, a movable seat, a fixed seat, a first plastic clamping plate, a first magnet, a second magnet and a second plastic clamping plate. According to the doll with the magnetic attraction structure, by arranging the connecting frame, the fixed seat, the movable seat, the first plastic clamping plate, the second plastic clamping plate, the first magnet and the second magnet, it is ensured that the soft doll body can stand or sit for a long time and cannot incline or collapse, the stability of the doll body is improved, and the service life of the doll body is prolonged. The soft doll solves the problems that due to the fact that the soft doll is high in softness, the soft doll cannot stably stand or sit, the soft doll is inconvenient to place in order, and a large storage space needs to be occupied.

The present invention provides a cerium-containing rare earth functional material and its application in the preparation of rubber products, comprising the following steps: step 1 is to mix anhydrous ethanol, diammonium cyanide and hydrochloric acid solution uniformly, add modified rare earth nitrate, deionized water and tetraethyl silicate thereto, react under heating conditions, and obtain an intermediate system after the reaction is completed; step 2 is to dry, calcine and grind the intermediate system, then add sodium hydroxide solution thereto, react under heating conditions, and filter, wash and dry after the reaction is completed to obtain the cerium-containing rare earth functional material. The cerium-containing rare earth functional material described in the present invention is a nano-scale material. When used as an additive to prepare rubber products, it not only increases the puncture resistance of the rubber, but also gives the rubber excellent antibacterial ability.

The invention discloses an existing building outer wall in-situ reinforcing and repairing method, belongs to the technical field of existing building outer wall repairing, and aims to overcome the defect that an existing existing building outer wall in-situ repairing method is poor in anchoring effect. According to the fixing pin with the knocking expansion and grouting functions, connection between the fixing pin and a wall is tighter and firmer through outward expansion of the bent portion of the expansion pipe and grouting operation, the tensile bearing capacity standard value of the fixing pin with the knocking expansion and grouting functions is effectively increased through the reinforcing fixing structure at the inner end, and the problem that the tensile bearing capacity standard value is low in the prior art is solved.

The present invention discloses a building reinforcement type assembled structure, comprising a prefabricated wall, wherein a plurality of connecting steel bars are embedded in the prefabricated wall, the ends of the connecting steel bars extend from the top of the prefabricated wall, and the bottom of the prefabricated wall is prefabricated with steel bar insertion holes corresponding to the ends of the connecting steel bars, the aperture of the steel bar insertion holes is larger than the diameter of the connecting steel bars, and also comprises a reinforcement base, the bottom surface of the reinforcement base is provided with a fixing groove, the top surface of the reinforcement base is provided with a plurality of through holes corresponding to the steel bar insertion holes, and the ends of the connecting steel bars at the top of the prefabricated wall of the lower layer can pass through the through holes and be inserted into the steel bar insertion holes at the bottom of the prefabricated wall of the upper layer; the present invention connects to the floor by adding a reinforcement base on the basis of the original prefabricated wall, and the reinforcement base adopts high-strength materials and optimized geometric shapes, and is combined with the pouring of concrete to improve the connection force between the wall and the ground, so as to support the reinforced wall to effectively resist the action of external forces.

The utility model relates to the technical field of pearl wool, and discloses pearl wool convenient to wind and cut, which comprises a pearl wool main body, one side of the pearl wool main body is provided with a first circumscribed round sleeve, the other side of the pearl wool main body is provided with a second circumscribed round sleeve, and the surface of the pearl wool main body is provided with a limiting assembly convenient to wind and fix. According to the pearl wool convenient to wind and cut, by arranging the limiting grooves, the long protruding strips, the air holes and the sealing layer, it is guaranteed that the pearl wool body cannot be scattered during winding and carrying, the fixity of the pearl wool body is enhanced, the situation that foreign matter invades the interior of the pearl wool body to damage and affect use is effectively prevented, the independence and sealing performance between structures are enhanced, and the service life of the pearl wool is prolonged. The problems that pearl wool is mainly rolled into a cylinder to be conveniently carried, but due to the fact that the softness and the elasticity of the pearl wool are high, the pearl wool is easy to separate in the carrying process, the rolling fixity is poor, and the carrying efficiency is reduced are solved.

This utility model relates to the field of packaging equipment technology and discloses a control box for packaging equipment, including a box body. Handles are symmetrically fixedly connected to both outer sides of the box body. A dust collector is installed through the left side of the top of the box body, and a connecting seat is fixedly connected to the right side of the top of the box body. A flexible opening and closing fixing component is provided at the front end of the box body. The fixing component includes a movable door. A slot is opened at the front end of the box body, and the left side of the movable door is movably hinged to the left side of the inner wall of the slot in the box body. This control box for packaging equipment optimizes the fixing method of the movable door by setting up a movable rod, movable door, movable frame, external seat, and pull block, ensuring that the movable door will not shift during protection and strengthening the firmness between the movable door and the box body. It solves the problem that the control box is inconvenient to open and close due to structural design issues, affecting operation and use, and that repeated opening and closing causes certain damage to the structure.

The invention provides an optical fiber cleaning machine and a cleaning method, and relates to the technical field of optical fiber processing equipment, the optical fiber cleaning machine comprises a machine body, two winding and unwinding mechanisms, two sponge belts, an optical fiber jig and a spraying mechanism, and the machine body is provided with a cleaning station; the two retracting and releasing mechanisms are oppositely arranged on the machine body and can move towards the cleaning station; the two sponge belts are arranged on the two retracting and releasing mechanisms in a one-to-one correspondence mode, and the two ends of each sponge belt are wound around the same retracting and releasing mechanism. According to the optical fiber cleaning machine and the cleaning method, the optical fiber jig is arranged to clamp the optical fiber to be cleaned, the end face of the optical fiber is placed at the cleaning station, the winding and unwinding mechanism drives the sponge belt to extrude the optical fiber, before the optical fiber is extruded and cleaned, the spraying mechanism sprays the cleaning liquid to the sponge, and the optical fiber jig drives the optical fiber to do reciprocating motion; therefore, optical fiber cleaning operation is achieved through friction with the sponge belt, the product cleaning consistency is improved, meanwhile, multiple optical fibers can be cleaned, and the cleaning efficiency is high.

The utility model relates to the technical field of steel pipe processing, and discloses a sectional type seamless steel pipe quenching device which comprises a base, a fixed seat is fixedly connected to the front end of the top of the base, a flexibly-adjusted quenching assembly is arranged above the base and comprises a quenching box, electric push rods are fixedly connected to the two sides of the bottom end of the quenching box, and the electric push rods are fixedly connected to the two sides of the bottom end of the quenching box. The bottom end of the electric push rod is fixedly connected with the top end of the base, and the rear end of the top of the base is fixedly connected with a fixing plate. According to the sectional type seamless steel pipe quenching device, by arranging the fixing plate, the electric push rod, the movable base, the quenching box and the sliding rail, heating and cooling sectional treatment is achieved, the working efficiency of equipment is improved, the situation that the quenching box shakes due to insufficient stabilizing force during cooling is avoided, and the problem that due to the fact that the distance between the heating function and the cooling function of the quenching device is long is solved. The service efficiency of the device is reduced due to the fact that segmented treatment cannot be conducted, and meanwhile the machining effect is affected due to the low adaptability of the device.

The present application relates to the field of pharmaceutical powders, and in particular to a cholecalciferol powder and a preparation method thereof. The raw materials of the cholecalciferol powder include, by mass percentage, 0.05-1% cholecalciferol, 0.1-2% flow aid, 40-60% coating material, 20-30% carrier particles, 1-5% functional additives, and solvent to supplement the remainder. The cholecalciferol powder prepared in the present application can not only ensure that the content and uniformity of cholecalciferol therein meet the standards, but also ensure that it has excellent antioxidant properties and water-resistant and hygroscopic properties, and has extremely strong self-stability in use, transportation and storage, and has a very excellent market prospect.

The utility model relates to oil station cooling technical field discloses oil station spray cooling device, including mounting panel, the four corners of mounting panel front end all are offered recess inward, the front end of mounting panel is provided with limit fixed component, limit fixed component includes fixed base, fixed base is provided with multiple groups. This oil station spray cooling device is provided with fixed base, water pipe, external branch pipe, sealing ring and spray head to the outside of water pipe is limited fixed, effectively prevents water pipe from being downwardly inclined because of gravity reason, promotes the stability of water pipe, the junction of external branch pipe and water pipe provides all -round sealing protection, avoids the influence of foreign matter invasion and causes water pipe blockage and influences the normal use of spray head, solves the stability of equipment self -structure is limited, and the conveying water pipe is easy to loosen and downwardly inclined after long -term use, and there is a security risk to the customer, and water pipe inclination influences water flow, reduces the problem of conveying fluency.

The invention relates to the technical field of fermentation equipment, discloses a microbial fermentation tank for bread food processing, and aims to solve the problem that the whole fermentation efficiency of dough is affected due to the fact that the contact amount of the interior of the dough and oxygen is small. Through the arrangement of the lifting rod, the pressing plate and the rotating piece, the pressing plate makes contact with dough and rotates to promote the connection force between the dough and the pressing plate to be increased, then the lifting rod drives the pressing plate to move upwards to be matched with the bottom wall of the tank body, so that the dough is pulled open, and the contact amount of the inner part of the dough and oxygen is increased; therefore, the probability that the overall fermentation efficiency of the dough is influenced is reduced.

The utility model relates to the technical field of oriented steel processing, and discloses an oriented steel high-temperature annealing treatment device which comprises a base, a protective outer cover is arranged above the base, a limiting and fixing rotating assembly is arranged between the protective outer cover and the base, the rotating assembly comprises a rotating disc, the top end of the base is fixedly connected with a placing disc, and the placing disc is fixedly connected with the rotating disc. A balance plate is fixedly connected to the top end of the containing disc, and the rotating disc is located at the top end of the balance plate. According to the oriented steel high-temperature annealing treatment device, through the arrangement of the supporting plate, the rotating disc, the limiting frame, the socket, the containing disc, the linkage shaft and the balance plate, it is ensured that the rotating disc rotates rapidly, the rotating disc is effectively prevented from falling off, the connecting force is enhanced, the protective outer cover is prevented from shaking, the connecting mode is optimized, and disassembling and assembling operation is convenient; the problems that the heating progress is slow, the annealing efficiency is greatly reduced, and the steel performance is easily influenced due to uneven heating due to large internal space in the prior art are solved.

The utility model discloses a steel frame structure and a box room, the steel frame structure comprises two steel frame bodies and support columns, the two steel frame bodies are oppositely arranged in a first direction, and a locking part is formed on each steel frame body; the supporting column is provided with two opposite supporting ends in the first direction, a matching part is formed on each supporting end, the supporting ends are rotationally arranged on the corresponding steel frame bodies in the axis where the supporting ends are located in the second direction, and the supporting column is provided with a jacking position for opening the two steel frame bodies in the rotating stroke; and when the locking and connecting part is located at the top supporting position, the locking and connecting part can be connected with the corresponding matching part in a locking manner. The two supporting ends of the supporting column are rotationally connected to the two steel frame bodies correspondingly, the two steel frame bodies can be arranged in a foldable mode relative to the supporting column, the box house can be formed by directly installing the splicing wallboards on the steel frame structure, use of hinges is avoided, and then the service life of the box house is prolonged.

The utility model relates to motor technical field discloses a motor's stator and rotor punching sheet, including stator punching sheet and rotor punching sheet, the stator punching sheet is located the front end of rotor punching sheet, the inside of rotor punching sheet is provided with stable magnetic field subassembly, the magnetic field subassembly includes the gap magnetic slot, the inside of rotor punching sheet is provided with multiple groups permanent -magnet slot of equal interval, the gap magnetic slot is provided with multiple groups, and respectively located every group permanent -magnet slot inner end's both sides, the outer end equal interval of rotor punching sheet is provided with multiple groups heat dissipation hole, this motor's stator and rotor punching sheet through setting up gap magnetic slot, permanent -magnet slot and heat dissipation hole, provide uniform, stable rotating magnetic field, effectively prevent the damage that electromagnetic force caused to the whole structure, ensure long -term in safe operation state, solve is unable to provide stable rotating magnetic field, prone to jam, influence the firmness of overall structure, and the problem that electromagnetic force is bigger and causes the damage to structure to influence each other.

The utility model relates to the technical field of UV offset printing ink production, disclose a kind of automatic feeding device for UV offset printing ink production, including pipe body, the top of the pipe body is outwardly inclined, the top of the inside of pipe body is provided with the filter assembly of convenient to take, the filter assembly includes filter layer, the top of both sides in pipe body is fixedly connected with support base, the filter layer is located at the top of the inside of pipe body.This UV offset printing ink production automatic feeding device is provided with filter layer, limiting frame, inner socket, positioning rod, support base and push plate, can carry out deep filtration to the ink imported into pipe body, quickly remove the impurity in ink, optimize the connection mode of filter layer, it is convenient to disassemble and use, solve the problem that plant-based environmentally friendly ink special smell is easy to attract insects, unable to filter ink and reduce the purity of ink, subsequent use is prone to dirty spot and affect the appearance.

The utility model relates to the technical field of chip processing, and discloses a circuit board drilling device convenient to position, which comprises an operation table, four corners of the bottom end of the operation table are fixedly connected with bases, the top ends of two sides of the operation table are fixedly connected with limiting side plates, the top end of the operation table is fixedly connected with a vertical frame, and the vertical frame is fixedly connected with a base. An adjusting assembly facilitating positioning is arranged between the limiting side plates. According to the circuit board drilling device convenient to position, by arranging the limiting side plate, the push plate, the outer frame, the positioning cylinder, the lead screw, the rotary knob and the pressing plate, the positions of the push plate and the outer frame can be adaptively adjusted, the circuit board drilling device is suitable for small circuit boards, the fixing performance of the circuit boards is ensured, damage to the surfaces of the circuit boards in the fixing period is avoided, and the service life of the circuit boards is prolonged. The positioning operation structure is optimized, and the problems that a drilling device cannot limit and fix a circuit board of a small size, and meanwhile the equipment efficiency is reduced due to complicated operation are solved.

The invention relates to the field of rotary cylinder sails, in particular to an energy-saving rotary air cylinder mechanism for a ship, which comprises a driving mechanism used for operating equipment and keeping the stable operation of the equipment; the vibration reduction mechanism is used for vibration reduction treatment of the rotary air duct; the stabilizing mechanism is used for reinforcing the stability between the clamping plate and the equipment; the energy-saving type rotary air duct mechanism for the ship moves outwards along the inner wall of the suspension disc through the reinforcing pieces till the reinforcing pieces are tightly attached to the inner wall of the air duct, the air duct is tightly attached to the inner wall of the air duct, and therefore the energy-saving type rotary air duct mechanism for the ship is more stable and reliable. Wherein the reinforcing part is arranged in the center of the inner cavity of the air duct, so that the reinforcing part can play a role in keeping force balance for the whole rotation of the air duct, and meanwhile, a force for keeping connection with the bottom in the rotation process of the air duct is also increased, so that the effect of increasing the rotation stability of the air duct is played.

The utility model relates to the technical field of industrial buffer beds, and discloses an industrial buffer bed with a multilayer structure, which comprises a base, outer supporting seats are fixedly connected to two sides of the top end of the base, multi-structure components capable of being quickly replaced are arranged at the tops of the base and the outer supporting seats, and each multi-structure component comprises a main buffer strip and a side buffer strip. According to the industrial buffer bed of the multi-layer structure, by arranging the main buffer strip, the side buffer strips, the wear-resisting layer, the mounting base, the positioning base, the mounting plate and the inner connecting groove, the connecting force is enhanced, meanwhile, the main buffer strip and the side buffer strips are conveniently disassembled and replaced, the connecting mode is optimized, the side buffer strips are prevented from sliding down, and the main buffer strip and the side buffer strips are matched with each other; a safe buffer space is formed, materials are prevented from falling off through the inclination angle, and the problems that a buffer bed structure is fixed, when a buffer strip is damaged after being used for a long time, the buffer strip cannot be rapidly detached and replaced, and the using effect of the whole structure is affected are solved.