118 results about "Metal nail" patented technology

Disclosed are a prestressed drilling, anchoring and grouting anchor cable and a support method. The prestressed drilling, anchoring and grouting anchor cable comprises a hollow grouting anchor cable, a sleeve, a lock, a washer and a tray, the hollow grouting anchor cable is provided with a sleeve head, a drill bit is arranged at the front end of the sleeve, and the sleeve is provided with an anchoring hole and a thread. The hollow grouting anchor cable drives the sleeve to drill holes and advances inwards through the thread in reverse rotation, a metal nail at the front end of the sleeve head punctures an anchoring agent package inside the sleeve, anchoring agents are mixed and then discharged through the anchoring hole in the sleeve, the gap between the sleeve and a drill hole wall is filled with the anchoring agents, and the anchoring function is achieved. An exhaust pipe is arranged in the anchor cable, the anchor cable is provided with a plurality of lantern-shaped grouting sections, and grout vent holes are formed in the lantern-shaped grouting sections. The prestressed drilling, anchoring and grouting anchor cable integrates drilling, exhausting, grouting and anchoring, the tail of the grouting anchor cable is firstly tensioned and fastened, grouting is then performed, an anchored body becomes reinforced pre-tightening force concrete, loose coal rocks are drilled, anchored, grouted and supported once, the problem that the anchor cable does not easily enter drilled holes in the loose coal rocks due to sticking and hole collapse is solved, the support strength of surrounding rocks of a roadway is enhanced, and the carrying capacity of a rock mass is improved. The prestressed drilling, anchoring and grouting anchor cable is simple in structure, low in cost, easy in construction and fine in support effect.

The invention is a replaceable golf shoe cleat or spike 10 for use in place of a standard metal spike 4. Winter golf shoe spike 10 preferably has a main cleat body 11 molded from a durable plastic type material in single unitary fashion. A threaded stud 13 is formed on the upper surface of generally concavo-convex flange 12 and protrudes axially therefrom. A plurality of traction ribs 15 are formed on the bottom traction surface of concavo-convex flange 12. While the ribs 15 may be present in a variety of configurations, they are preferably triangular ridges arranged in a radial fashion emanating from the center of concavo-convex flange 12.

A hammer is disclosed, which has a nail groove axially formed in the top side of the front bell of the head thereof, a magnet mounted in the nail groove for attracting a metal nail for hammering, and a side face at each of the two opposite lateral sides of the head for hammering operations in a narrow space.

The nail file includes a magnetized material layer and an abrasive surface. The magnetized material may be the base of a metal nail file or a magnetized layer in an emery board. In the latter case, the abrasive surface may be proximate one or both sides of the magnetized layer. A base layer may be interposed between the magnetized layer and abrasive surface.

Provided is a lithium ion secondary battery including, as components accommodated in a container, a positive electrode that intercalates and deintercalates lithium, a negative electrode that intercalates and deintercalates lithium, a nonaqueous electrolytic solution that contains a lithium salt, and a separator that is interposed between the positive electrode and the negative electrode. The separator includes a porous resin layer containing polyolefin as a main component.In a full charge state, when observing a cross-section of the lithium ion secondary battery after performing a nail penetration test in which a metal nail having a diameter of 3 mm penetrates through a central portion of the lithium ion secondary battery at 80 mm / sec for short-circuiting of the lithium ion secondary battery, an average thickness of the porous resin layer in a range of 1 mm to 3 mm in an in-plane direction from a peripheral edge of a nail hole is equal to or greater than 10% of an average thickness of the porous resin layer before the nail penetration test, and the porous resin layer remains at a position within 1 mm in the in-plane direction from the peripheral edge of the nail hole.

The invention relates to multi-accessory high-precision automatic positioning and adhering equipment. The equipment comprises a rack, a working table, a fixing mechanism, a clamping mechanism and a limiting mechanism. A gantry support and multiple supporting pillars used for supporting a windshield are arranged on the working table, an electrical cabinet and a computer are further arranged on the rack, the equipment further comprises a pressing mechanism arranged on the gantry support, a positioning servo mechanism arranged on the working table and a shooting mechanism, the pressing mechanism, the positioning servo mechanism and the shooting mechanism are connected with the electrical cabinet through a circuit, and multiple pneumatic pressing mechanisms are arranged on the positioning servo mechanism and arranged on the working table movably through the positioning servo mechanism. Compared with the prior art, the structural arrangement is compact, module work division is clear, all the mechanisms cooperate with one another, in this way, windshield metal nails can be automatically positioned and adhere in a high-precision mode, positioning precision is high, adhering is firm, and production efficiency is effectively improved.

The invention discloses a medical intestinal anastomosis ring made of a degradable magnesium alloy, and relates to the field of medical apparatus and instruments and the medical intestinal anastomosis ring is used for solving the problem that the existing intestinal anastomosis material is not degradable. The medical intestinal anastomosis ring is made of a degradable magnesium alloy, and a poly lactic-co-glycolic acid copolymer coating or modified chitosan coating is coated on the surface medical intestinal anastomosis ring. Mg<2+> in the degradable product of the medical intestinal anastomosis ring is the second important positive ion in human cells and is harmless to a human body. The medical intestinal anastomosis ring is in contact type anastomosis, avoids damage to intestinal wall by suture or metal nails, cause less tissue wounds, is minium in the tissue necrosiss degree of the whole anastomosis stomas, can be degradable after being implanted in a human body for 2-3 weeks, and has no permanent foreign body reaction, thus effectively reducing scars at the anastomosis stomas, thereby having low stenosis incidence rate of the anastomosis stomas.

The present invention discloses a personalized artificial metal beautiful nail manufacturing system, including measuring module, generating module and processing module. The present invention also discloses a personalized artificial metal beautiful nail processing and manufacturing method, which includes following steps: (a) putting natural fingernail in measurement mechanism, and obtaining surfaced three-dimensional shapes information of natural fingernail with measurement mechanism; (b) inputting or selecting desirable various parameter such as length, width, thickness and decorative pattern etc by customer, generating three-dimensional digital model of artificial beauty nail by generating module and transforming three-dimensional digital model into processing parameter; (c) according to processing parameter generated by generating module, making the material into personalized artificial metal beautiful nail by processing module. The present invention is more simply and more conveniently operated, compared with existing advice for preparing beautiful nail, it can save more time and reduce the charge of customer.

The invention discloses a polysilicon etching cavity and a method capable of lowering metal pollutant content in the cavity. A plasma isolation apparatus is arranged on the exterior of an exposed top assembling structure of metal nails, wherein the metal nails are used for tightly locking a static adsorption plate, a lower electrode, a focus ring and a base; the metal nails are fully protected, so that the problem that the metal nails are subjected to etching plasma bombardment to generate metal active ions to cause metal pollution to the etching cavity in the cavity process period can be avoided completely; and an effect of lowering the metal pollutant content in the polysilicon etching cavity is achieved, thereby lowering inherent damage to the electrical performance of the product in the polysilicon etching process, and improving the product yield.

The invention belongs to the field of medical devices, and specifically relates to a drug-coated titanium nail with chitosan gelatin as a carrier, which is characterized in that: the thickness of the coating on the titanium nail is 0.001-10 mm; Titanium nails are used for open and endoscopic anastomotic staplers, skin sutures, linear staplers, and clip applicators. The diameter of the titanium nails is 0.1-5.0. The titanium nails are made of TA1, TA2 and the metal nails are made of 316LVM stainless steel, self-reinforced poly-L A coating of lactide SR-PLLA12 nails and self-reinforced poly-L-polyglycolide SR-PGA nails, the chitosan gelatin titanium nails can perform chitosan for human implants, artificial organs, catheters Sugar gelatin coating treatment or coating treatment using chitosan gelatin as drug controlled release carrier, the method is simple and easy, the prepared chitosan gelatin coated titanium nail meets the clinical application requirements, chitosan gelatin coated titanium nail can It promotes tissue healing, has good stability, is not easy to wash off, is safe to use, is suitable for large-scale industrial production, and is simple to operate and low in cost.

The invention discloses a structure and method for assembling a battery top cover and a pole. The structure comprises a top cover sheet, and a first pole and a second pole which are arranged on the top cover sheet, wherein a first plastic part is formed between the first pole column and the top cover plate in a rubber coating manner, a second plastic part is formed between the second polar columnand the top cover plate in a rubber coating manner, the first pole comprises a first metal block and at least one first metal nail matched with the first metal block in a concave-convex mode, the first metal nail is welded to the first metal block, the second pole comprises a second metal block and at least one second metal nail matched with the second metal block in a concave-convex mode, and thesecond metal nail is welded to the second metal block. The structure is advantaged in that the pole formed by friction welding is omitted, the production cost for assembling the top cover and the pole can be reduced, the overall overcurrent capacity of the pole can be improved, moreover, the stability between the pole and the battery cover plate is improved, so safety performance of a battery cell is improved. In addition, the invention also discloses an assembly method of the battery top cover and the pole.

The invention relates to the technical field of reservoir slope construction, and discloses a spraying method for construction of concrete for slope reinforcement of a water-level-fluctuating zone. The spraying method includes the following steps that (1) the rock face is cleaned, loose rocks, pumice stone, dust, slag and other debris on the sprayed face are removed, for a soil slope, the slope isleveled and compacted, a spraying layer mark is arranged as required, the spraying layer thickness control mark adopts rebars or metal nails, the space between the rebars or the metal nails is 3-5 m,and the length of the extension part of the rebars or the metal nails is the thickness of sprayed concrete. According to the spraying method for construction of the concrete for slope reinforcement of the water-level-fluctuating zone, the space between the arranged rebars or the metal nails is 3-5 m, the length of the extension part of the rebars or the metal nails is the thickness of the sprayedconcrete, so that the rebars or the metal nails can be covered by the sprayed concrete after spraying of the concrete is completed, the spraying quality of the concrete is increased, after installation and debugging are also completed through a spraying machine, firstly water is injected, then ventilation is conducted, and pipelines are cleaned.

The invention belongs to the field of medical devices, and specifically relates to a drug-coated titanium nail with calcium alginate fiber as a carrier. Human implants, artificial organs and catheters can be coated with calcium alginate fibers or coated with calcium alginate fibers as drug-controlled release carriers. The titanium nails are used for open and laparoscopic anastomotic staplers , skin suture, linear stapler, clip applier, titanium nails with a diameter of 0.1-0.5, titanium nails made of TA1, TA2 and metal nails made of 316LVM stainless steel, self-reinforced poly-L-lactide SR-PLLAl2 nails and self-reinforced poly The coating of L-polyglycolide SR-PGA nails can effectively improve the use of surgical stomach, lung and other tissues and digestive tract surgical tissues, reduce the incidence of complications of patients, improve the survival rate and quality of life of patients, and the process is simple. The cost is low, the coating of the titanium nail is uniform, and the loading capacity of the drug and the controlled release carrier is also greatly increased.

A substrate improving immobilization of ball pads for BGA packages mainly comprises a substrate core, a plurality of ball pads and a solder resist layer. Each of the ball pads has a metal pad and at least a metal nail. The metal pads are adhered on a surface of the substrate core and the metal nails are embedded into but not penetrate the substrate core. The solder resist layer is formed over the substrate core and exposes the metal pads. By utilizing the shapes of the ball pads to increase bonding area between the ball pads and the substrate core, a separation or crack occurring at the interface between the metal pads and the substrate core can be substantially avoided.

The invention belongs to the field of special equipment for engineering, and particularly relates to a vibration cutting deicing device. The device is mounted at the front part of a motor vehicle, and comprises three parts, namely a vibration cutting structure, a sweeping structure and an ice coating removing structure. The vibration cutting structure is mounted at the forefront of the motor vehicle; an eccentric shaft is arranged in the vibration cutting structure; elastic blades are arranged outside the vibration cutting structure; the vibration cutting structure vibrates while rotating to conduct ice cutting and scraping actions, and can effectively protect a pavement from damage under the premise of ensuring the ice crushing efficiency; the sweeping structure is responsible for sweeping cut off crushed ice; and metal nails flexibly connected with a housing are arranged on the surface of the ice coating removing structure, and are used for further cleaning the ice coating on the treated pavement, and removing residual ice in pits on the pavements through irregular impact, so as to achieve a fully cleaning effect.

The application discloses a heat-preservation nail and a heat-preservation nail component based on the same. The heat-preservation nail disclosed by the application consists of a front part and a rear part which are fixedly connected, wherein the front part is a metal nail, and the rear part is a heat-insulation rod. According to the heat-preservation nail disclosed by the application, the metal nail part ensures the firmness and fixed functions of the heat-preservation nail; the heat-insulation rod part can effectively achieve a heat insulation effect, so that the problem of large heat radiation amount of a non-improved metal nail body is avoided, and the whole heat insulation performance of a heat insulation system is improved.

The improved plumb-bob is mainly consisted of a body section, a point section, and a fixing element, wherein a connecting means is arranged at the top of the body section by which it may be connected to a suspending cord, and the point section is a cylinder with a flange arranged at the shank, and the point section is provided at least at one end with a conical-pointed part, and the fixing element is bored from the low end to the upper end forming an upper portion and a lower portion. The upper portion is of larger diameter and the lower portion is of reduced diameter but is larger than that of the point section, thus forming an angular shoulder against which the fringe abuts when the parts are assembled to enable the conical-pointed part to project outwardly under the fixing element. The fixing element can hold and fix the point section in a proper position between the body and the fixing element. The invention may simplify the structure of the expandable point section such that not only the manufacturing cost of the point section is reduced, but also many unnecessary compatible constraints may be removed, that is, when the point section is damaged and no spared point section for replacement, a metal nail, such as iron nail, steel nail, etc., with similar diameter can be applied as a substitute.

The invention provides an anchoring combined part used for anchoring fixation of a heat-preservation plate and a heat-preservation wall body of the same. The combined part comprises an outer anchoring part and an inner anchoring part, wherein the outer anchoring part comprises an outer anchoring part center rod and a first end cap located on the outer end of the outer anchoring part center rod, and the size of the first end cap is larger than the cross section size of the outer anchoring part center rod; the outer anchoring part center rod has a hollow structure; and the inner anchoring part comprises an inner anchoring part center rod and a second end cap located on the outer end of the inner anchoring part center rod, the size of the second end cap is larger than the cross section size of the inner anchoring part center rod, and the inner anchoring part center rod is inserted into the hollow structure of the outer anchoring part center rod. The anchoring part is mainly applied to prefabricated components during factory production of self heat-preservation wall bodies, wherein the outer anchoring part is mainly used to fix the heat-preservation plate in concrete; the inner anchoring part is mainly used to fix a glass fiber net or a steel wire net in a cement mortar protective layer inlaid into the outer side of the heat-preservation plate, and plate seams of the heat-preservation plate are not occupied in addition, so a heat bridge of the self heat-preservation wall body is minimized; very large pull force is formed through mutual inverse hooking of hook thorns on the combined part of the inner and outer anchoring parts, and fixation of metal nails is avoided; and the inner anchoring part can be very easily inserted into a casing in the center of the outer anchoring part, but cannot be pulled out.

The invention relates to an encapsulation substrate with a spherical lattice array for enhancing the fixation of a spherical pad and an encapsulation structure with the spherical lattice thereof. The encapsulation substrate with a spherical lattice array for enhancing the fixation mainly includes a core layer of the substrate, a plurality of spherical pads and an anti-wielding layer. Every spherical pad has a metal pad and at least a metal nail. The metal pad is clingingly arranged on a surface of the core layer of the substrate and the metal nail is embedded in the core layer of the substrate. The anti-wielding layer is formed on the core layer of the substrate and the metal pad is exposed. The encapsulation structure with the spherical lattice includes the encapsulation substrate with a spherical lattice array and a plurality of solder balls and the plurality of solder balls are conjugated with the spherical pads. By utilizing the shapes of the spherical pads in the invention, contact area for the core layer of the substrate can be increased to further prevent a conjunction interface between the metal pad and the core layer of the substrate from separating or cracking.

The invention discloses a method for detecting the electrical conductivity of a small number of solids. The method comprises the following steps that two metal nail-shaped electrodes are used for limiting detected powder in a PTFE pressure-bearing pipe, wherein the height of the pressure-bearing pipe ranges from one centimeter to three centimeters, and the diameter of the pressure-bearing pipe ranges from three millimeters to five millimeters; in the measuring process, pressure is exerted on the metal nail-shaped electrodes at the two ends, air among the powder is exhausted, and the powder is squeezed into a cylinder; the length of an inner cylindrical sample can be measured through a measuring tool, and the overall resistance is measured through a multimeter; the electrical conductivity is calculated; after measurement is completed, the metal nail-shaped electrodes are pulled out of the two ends of the pressure-bearing pipe, and the sample is ejected out of the pressure-bearing pipe through a hard needle. According to the method for detecting the electrical conductivity of a small number of solids, only a small number of samples are used, and accurate measurement data of the electrical conductivity are obtained through a very simple method on the premise that no liquid auxiliaries need to be added and no properties of the powder are changed.

The invention belongs to the field of medical instruments and relates to a reinforcing device used when a metal nail plate is detached after internal fracture fixation operation union of a patient, in particular to a reinforcing bar for supporting a pore passage of a bone nail. The reinforcing bar for supporting the pore passage of the bone nail comprises a cylindrical bar body used for supporting the pore passage of the bone and a diversion groove is formed in the bar body and is a through hole penetrating through the bar body. The reinforcing bar for supporting the pore passage of the bone nail is used for effectively solving the problems that when the metal bone connecting plate and metal bone connecting nails are detached after internal fracture fixation operation union, the perforated portion of the fracture portion is unstable and the cancellous bones collapse.

A double-E-corrugated color zero-difference energy-saving reinforcement green package comprises a first composite layer and a second composite layer. A continuous and same-height first wave-shaped reinforcement layer is arranged between the first composite layer and the second composite layer; the upper and lower top points of the first wave-shaped reinforcement layer are bonded with the first composite layer and the second composite layer respectively through adhesives; a continuous and same-height second wave-shaped reinforcement layer is bonded on the other surface of the second composite layer, and thus a double-E-corrugated structure is formed; and the double-E-corrugated structure has very good support strength. A combined-type molding mechanism is used, so that various types of corrugated shapes can be prepared simultaneously; the prepared package box is high in compressive strength, and printing can be carried out directly on offset printing; each paper box is formed through one piece of paperboard, so that color zero-difference is realized during printing; and the paper box has only one joint place, which can be connected in an adhesive manner without using metal nails, thereby reducing production cost and reducing resource waste.

The invention discloses a stable microstrip leaky-wave antenna capable of periodically loading a parasitic patch gain. The antenna comprises a dielectric plate, a metal conveying belt, a metal floor,a feed connector, an impedance matching part and parasitic patches, the upper layer and the lower layer of the dielectric plate are tightly attached to the metal transmission band and the metal floorrespectively, and the parasitic patches are periodically loaded on the upper surface of the dielectric plate; a plurality of groups of trifurcate grooves are periodically etched in the length direction of the metal conveying belt, and an additional small groove is formed between every two trifurcate grooves; metal nails and the trifurcate grooves are located on the two opposite sides of the metalconveying belt respectively, the additional small grooves and the trifurcate grooves are located on the same side of the metal conveying belt, and the parasitic patches are distributed on the side close to the trifurcate grooves in the metal conveying belt. According to the invention, the mutual compensation with the metal conveying belt by introducing a parasitic patch is overcome, and the radiation performance of the antenna is improved. In actual operation, the shape and the size of the parasitic patches and the position of the metal conveying belt can be adjusted according to different conditions, and the optimal radiation performance is achieved.

A substrate improving immobilization of ball pads for BGA packages mainly comprises a substrate core, a plurality of ball pads and a solder resist layer. Each of the ball pads has a metal pad and at least a metal nail. The metal pads are adhered on a surface of the substrate core and the metal nails are embedded into but not penetrate the substrate core. The solder resist layer is formed over the substrate core and exposes the metal pads. By utilizing the shapes of the ball pads to increase bonding area between the ball pads and the substrate core, a separation or crack occurring at the interface between the metal pads and the substrate core can be substantially avoided.

The invention discloses a gastrointestinal anastomotic nail with a degradable drug film layer and a preparation method of the gastrointestinal anastomotic nail. The gastrointestinal anastomotic nail is composed of a degradable metal nail base and a drug-loading film layer. The degradable gastrointestinal anastomotic nail is a U-shaped nail, the metal nail base is obtained by making nails with a magnesium alloy wire, the magnesium alloy wire has two upper-lower parallel surfaces; and the drug-loading film layer is composed of a porous oxide film containing drug molecules. According to the gastrointestinal anastomotic nail, the risk of nail breaking during the preparation and use process can be effectively reduced, meanwhile, through the cooperative use with drugs, the proliferation of tumorcells that may remain at an anastomotic site can be inhibited, the risk of recurrence is reduced or anastomotic stoma healing is promoted, and the occurrence of anastomotic stoma leakage is reduced.

The invention discloses an easy-to-carry drum. The easy-to-carry drum comprises a drum body, a drum skin, vibration pieces and a vehicle frame, wherein the drum body is surrounded by plates, a drum cavity is formed in the drum body, the plates comprise the main beam plates and the secondary plates, the main beam plates protrude from the inner wall of the drum cavity to form a protruding part, theprotruding part is covered with a metal layer, the protruding part is provided with metal nails, and the metal nails penetrate through the protruding part to the exterior of the drum body; an expansion piece is arranged on the drum skin, and the expansion piece is fixedly in sleeved connection with the two ends of the drum body; each vibration piece comprises a disk, a spring and an elastic sheet;the vehicle frame comprises a horizontally arranged supporting plate and a supporting frame arranged on the supporting plate, the first end of the supporting frame is hinged with the supporting plate, an elastic telescopic rod is arranged between the supporting frame and the supporting plate, one end of the elastic telescopic rod is fixed on the supporting plate, the other end of the elastic telescopic rod is connected with the second end of the supporting frame, and the elastic telescopic rod stretches or retracts to raise or lower the second end of the supporting frame; four universal wheels are arranged under the supporting plate.

The invention provides an air-permeable heat-radiation shoe sole with good air permeability and heat radiation effect, and the shoe sole is comfortable and cool to wear. In the invention, a plurality of air-permeable openings are arranged on the shoe sole and are respectively corresponding to unstressed positions of the sole of the foot such as the arch and / or ball of the foot so that the openings are not blocked and airflow can better flow into a shoe body, thus achieving a good air permeability effect; metal nails are arranged on the shoe sole and are respectively corresponding to stressed contact positions of the sole of the foot, and a certain contact area is formed between the sole of the foot and the end surfaces of the metal nails so that the metal nails can better absorb heat generated by the foot, thus achieving a good heat radiation effect; and metal nets are clamped between the insole and an outsole and are corresponding to the air-permeable openings so as to play a role in protecting the ball of the foot and preventing the ball of the foot from being damaged by sundries.

The invention discloses a kernel opener, which comprises an outer frame with a cavity and an opening, an inner frame which is fixed in the cavity of the outer frame and is provided with a cavity and an opening, a cover which is connected with the opening of the inner frame in a separated mode, through holes which are formed in the inner frame, nails which penetrate through the through holes in a sliding mode, a guide groove which is arranged at the periphery of the outer frame and a hoop which is encircled in the guide groove, wherein the outer frame comprises a plurality of cantilevers which extend outwards from the middle of the outer frame and do not contact mutually; the inner sides of the nails are inserted into the inner frame, and the outer sides of the nails are pressed against the cantilevers; and the tail end of the hoop is provided with a handle for adjusting the length of the hoop. According to the kernel opener, direct compression is replaced by the rotary motion of the handle, and nuts are contacted by the dispersed metal nails in multiple points and are stressed simultaneously from different angles to open the nuts and obtain integral kernels, so the kernel opener has the characteristic of saving labor, fragments can be prevented from being spattered everywhere, and the kernel opener can be suitable for the nuts of different sizes.

The invention discloses an improved intestinal cavity stapler which comprises an outer cylinder, a first inner cylinder, a second inner cylinder and a pull rod, which are arranged on the top of the pull rod, an anastomosis line and an ice-making mold, and are coaxially sleeved from the outside to the inside and are mutually adhered. When the intestinal cavity anastomosis is carried out by the intestinal cavity anastomosis device of the invention, it is possible to utilize an annular line in a frozen state, Short-line and high water-absorbent resin ball anastomosis ring intestinal incision canimprove the efficiency of suture, and the anastomosis material remains less in the body and is easy to discharge, reducing the occurrence of complications of operation, without degradation of metal nails, less harm to human body, and can play the role of hemostasis in anastomosis, prevent postoperative anastomotic bleeding, avoid re-operation.

The invention discloses a metal recovery device, and relates to the field of special equipment for building construction sites. The metal recovery device comprises a rack, a pair of front mounting frames, a pair of middle mounting frames and a pair of rear mounting frames are fixedly mounted at the bottom of the rack, loosening mechanisms are arranged at the bottoms of the pair of front mounting frames, and a rotating wheel is arranged at the bottom of the pair of middle mounting frames; and a plurality of magnets are fixedly installed on the outer side wall of the rotating wheel, a shovelingplate is arranged on one side of the rotating wheel, a screening plate is arranged at the bottom of the shoveling plate, and a receiving box is arranged at the bottom of the screening plate. The metalrecovery device is reasonable in structure and easy to operate, scattered metal nails and the like are separated from the ground through the loosening mechanism, then the metal nails are attracted through the magnets, the attracted metal nails are separated from the rotating wheel through the shoveling plate, and the metal nails slide onto the screening plate along the shoveling plate and fall into the receiving box after being screened, so the purpose of recycling metal such as metal nails scattered on the ground is achieved.