90results about How to "Reduce contact surface" patented technology

The utility model discloses an adjustable large-span steel drilling tool, relates to the technical field of steel drilling, and aims to solve the technical problems that the front-back position of current steel is inconvenient to adjust, and dislocation drilling work is affected. The adjustable large-span steel drilling tool comprises a base, and a drilling mechanism and a conveying mechanism are fixedly arranged on the upper surface of the base; clamping assemblies are fixedly arranged on a front frame and a rear frame of the conveying mechanism respectively, clamping pieces are installed on the faces, close to each other, of the two clamping assemblies respectively, and a plurality of guiding pieces are fixedly arranged on the upper surface of a conveying belt of the conveying mechanism. The clamping assemblies and the clamping pieces are matched to clamp and fix the position of the steel, the position can be kept stable when the drilling mechanism drills the steel conveniently, deviation is prevented, and meanwhile the clamping assembly structures on the two sides are arranged so that the steel can be pushed forwards and backwards to move conveniently. The drilling machine has the advantages that the position of steel is flexibly adjusted, and drilling work at different positions is facilitated.

The invention discloses an MIM injection molding multi-mold-cavity precise magnetic attraction part suction method, and belongs to the technical field of MIM injection molding molds and production devices. Injection molding is carried out on the basis of a glue feeding mode of point glue feeding, and the point gate can be located on the concave surface of the product, so that the contact surface of the gate and the product body is small, the gate can be conveniently removed in a mold when the mold is opened, and the integrity of the molded product is guaranteed; by means of the magnetic type material taking jig, the problem that due to the fact that a protruding mold core is arranged on a female mold, the contact force between a formed product and the female mold is large, and demolding is difficult can be solved, and rapid material taking and discharging are achieved; according to the magnetic type material taking jig, the magnetic type material taking jig is in positioning contact with a product in advance, then adsorption / separation is conducted through the movable magnet, and meanwhile the separation air cylinder is arranged in a matched mode, so that material taking and discharging operation can be conducted rapidly and accurately.

The utility model discloses a tumbling cutter for rolling finish machining of a metal workpiece, which relates to the technical field of rolling machining cutters, solves the technical problems of lower surface roughness grade, complex structure and smaller machining range in the prior art, comprises a cutter handle, and is characterized in that a pin shaft is fixedly mounted on the cutter handle; a deep groove ball bearing is installed on the pin shaft, a steel ball frame is fixedly installed at the front end of the cutter handle, a steel ball hole is formed in the front end of the steel ball frame, and a hard alloy ball is movably installed in the steel ball hole. Components are few, the structure is simple, manufacturing and maintenance are easy, and production efficiency is improved; the contact surface of the tumbling cutter is small, large pressure can be obtained, equipment load is reduced, abrasion is relieved, and the service life of equipment is prolonged; the deep groove ball bearing serving as a supporting element is small in friction coefficient and beneficial to maintaining the rolling state; and the production flexibility is improved due to the workpieces which can be subjected to roll finishing.

The invention discloses a surface phosphating and cleaning device for metal rollers for foils, and relates to the technical field of metal material surface treatment.The surface phosphating and cleaning device comprises a base and a fixing frame, a phosphating pool and a cleaning pool are fixedly arranged at the top of the base, and two walking mechanisms are arranged at the top of the base; a portal frame is fixedly connected between the tops of the two walking mechanisms, two first multi-stage electric telescopic rods are symmetrically arranged on the top face of the inner side of the portal frame, a mounting plate is fixedly connected to one ends of the first multi-stage electric telescopic rods, two guide rods are fixedly connected to the bottom of the mounting plate, and a fixing frame is fixedly connected with the guide rods. Three swing washing structures are arranged outside the fixing frame, and the first storage rack and the fixing frame are fixedly connected in a penetrating mode. According to the surface phosphating cleaning device for the metal rollers for the foils, the problem that a plurality of metal rollers are damaged due to mutual collision during phosphating is solved.

The utility model relates to the field of feed production, and particularly discloses an integrated closed solid-liquid mixed feed production line which comprises a main material adding device, at least one small material adding device, at least one liquid material adding device, a mixer and a finished product subpackaging device, the liquid material adding device comprises a liquid storage tank, a liquid inlet pump, a liquid metering scale and a liquid spraying system which are connected in sequence; an inlet of the mixing machine is respectively connected with the main material adding device, the small material adding device and the liquid material adding device; the finished product sub-packaging device comprises a finished product bin, a discharging screw rod and a sub-packaging weighing packaging machine which are connected in sequence; and an inlet of the finished product bin is connected with an outlet of the mixing machine. According to the utility model, the main material adding device, the small material adding device and the liquid material adding device are respectively arranged in front of the mixing machine, so that solid-liquid mixed feed production is realized, moisture absorption and caking of soluble materials are reduced, and the small material adding device directly communicated with the mixing machine is arranged to reduce the contact surface between small materials and wet materials.

The utility model provides glass fiber reinforced plastic pipeline cutting equipment, which relates to the technical field of glass fiber reinforced plastic processing, and comprises a base carrying assembly and a cutting mechanism, a clamping and pushing part assembled by a bolt is arranged above the side of the base carrying assembly, and the cutting mechanism installed in an inserted manner is arranged on the outer side of one end of the base carrying assembly. The cutting mechanism comprises a side end frame, a cross beam, a third hydraulic cylinder, a lifting block, a cutting motor, a protective shell and a saw disc. The side end frame is arranged on the outer side of one end of the base carrying assembly. According to the utility model, the output power of the first hydraulic cylinder and the second hydraulic cylinder is mainly utilized to drive the output end to perform telescopic operation, so that the lead screw motor outputs the power to drive the lead screw group and the sliding block to be in sliding connection, and then the clamping guide wheel is matched with the upper and lower guide wheels to perform rolling clamping fitting effect on the glass reinforced plastic pipe; in this way, the contact surface with the glass reinforced plastic pipe can be reduced as much as possible during clamping, so that the quality of products is improved, and damage to the products is reduced.

The present invention relates to the technical field of lithium-ion batteries, and in particular to a single-crystal lithium-rich manganese-based positive electrode material and a preparation method thereof and a lithium-ion battery. The chemical formula of the positive electrode material is Li x Mn a Ni b Co c M d N e O g , wherein M is one of W, Mo, La, Zr, Nb, Ta, V, Hf, N is one of F, B, Cl, Br, S, P, 1<x≤1.3, 0.5<a≤0.8, 0.1≤b<0.5, 0<c≤0.5, 0<d≤0.1, 0<e≤0.1, 2≤g<2.2, 0.1≤d / e≤5. The compacted density of the positive electrode material of the present invention can reach up to 3.6g / cm 3 The minimum specific surface area is only 0.25m 2 / g, which can greatly reduce the contact area between the positive electrode material and the electrolyte, thereby inhibiting the interfacial side reactions and improving the volume energy density and cycle life of the lithium-rich manganese-based positive electrode material.

The utility model discloses a groove type wafer bracket used for batch wafer cleaning, which comprises a bracket main body, wafer supporting seats and arc-shaped slots, the two sides of the upper surface of the bracket main body are symmetrically provided with straight-strip-shaped wafer supporting seats, the wafer supporting seats are arranged along the long sides of the bracket main body, the top surfaces of the wafer supporting seats are supporting surfaces, and the arc-shaped slots are arranged in the supporting surfaces. The supporting surface is an arc-shaped surface with a high outer side and a low inner side, a plurality of limiting teeth are arranged on the top surface of the wafer supporting seat along the length, the limiting teeth are perpendicular to the long edge of the bracket main body, the limiting teeth are parallel and are arranged at equal intervals, arc-shaped slots which are sunken downwards are formed between the adjacent limiting teeth, and a wafer workpiece is inserted into the corresponding arc-shaped slots on the two sides. The radius corresponding to the groove bottom of each arc-shaped slot is consistent with the radius of the wafer workpiece, and the total contact length of the two arc-shaped slots and the circumferential surface of the wafer workpiece does not exceed 1 / 3 of the perimeter of the wafer workpiece; according to the bracket, the contact area with the wafers can be reduced, the supporting effect on a plurality of wafers is ensured, and the wafers cleaned in batches can achieve a higher cleaning effect.

The invention relates to the technical field of motorcycle shock absorbers, and discloses a motorcycle shock absorber which comprises four cylinders, telescopic rods are arranged in first inner cavities of the cylinders, positioning rods are fixed to the bottoms of the first inner cavities, and the telescopic rods reciprocate on the positioning rods. A first damping hole is formed in the telescopic rod, and the damping cavity communicates with the first inner cavity through the first damping hole. And the shock absorption effect and the service life of the shock absorber during operation are improved.

This invention relates to the field of embryo resuscitation technology and discloses an auxiliary warming device for frozen embryo resuscitation, including a collection plate. A fixing ring is fixedly connected to the side wall of the collection plate, and a forward threaded groove is formed on the side wall of the fixing ring. The cover plate drives the separator ring to rotate clockwise through the contact rod and the fixing plate. Since the reverse threaded groove rotates in the opposite direction to the forward threaded groove, the rotating ring will move upward at this time. The upward rotating ring will drive the separator ring to move upward synchronously, so that the through hole gap coincides with the flow hole. At this time, the new solution on the outer wall of the separator ring flows downward through the flow hole and the through hole gap. Finally, the new solution mixes with the solution inside the collection plate. At this time, the pressure of the dripping will be absorbed by the top of the fixing ring and will not directly contact the solution inside the collection plate. When the operator twists the cover plate to close it, the flow hole and the through hole gap will coincide, and the new solution will mix with the solution inside the collection plate, effectively reducing the damage to the outer wall of the embryo cell membrane when injecting the new solution.

The utility model discloses a controllable mechanical arm for converter steelmaking experiments, which relates to the technical field of mechanical arms for steelmaking experiments and comprises a base, a sliding table capable of driving equipment to slide is arranged on the upper surface of the base, and a sampling mechanism for sampling molten steel samples is arranged on the bottom surface of the base. An adjusting mechanism for driving the sampling mechanism to move is further arranged between the base and the sampling mechanism, a collecting and releasing assembly for driving the sampling mechanism to turn over for sampling and sample discharging is further fixedly installed on the bottom face of the base, the adjusting mechanism comprises two mechanical arm bodies, and the upper surfaces of the mechanical arm bodies are arranged on the two sides of the bottom face of the base; electric push rods used for driving the two mechanical arm bodies to move are fixedly installed on the surfaces of the two sides of the base, in the scheme, by arranging the sampling mechanism and the adjusting mechanism, the complexity and errors of manual operation are reduced, and the accuracy and stability of the sampling and sample discharging process are further guaranteed.

The utility model discloses a high-efficiency anti-fog resin lens, which comprises a lens, anti-fog film layers are arranged on the front surface and the rear surface of each lens, honeycomb texture structures are arranged on the outer surfaces of the anti-fog film layers, each honeycomb texture structure is formed by connecting and arranging a plurality of hexagonal grooves, at least one air groove is formed in the inner side of each hexagonal groove, and the depth of each air groove is smaller than or equal to that of each groove. According to the utility model, the honeycomb texture structure is arranged on the outer surface of the anti-fog film layer, and the surface tension is improved through the texture structure and the grooves, so that micron-sized water drops are difficult to form after water vapor is liquefied, and a water film is formed; the widths or diameters of the grooves and the air grooves are nanoscale, water is attached to the surface of the anti-fog film layer, and air in the grooves and the air grooves supports the water, so that the contact surface of the water and the film layer is reduced, the smaller the contact surface is, the better the hydrophobicity of the film layer is, and the texture structure on the surface of the anti-fog film layer effectively plays an anti-fog and hydrophobic role.

The utility model belongs to the field of engineering construction, and particularly relates to a fixing device capable of being quickly assembled and disassembled on a round rod, the device comprises a detachable shell part and an internal assembly part, the detachable shell part comprises a top cover, a conical shell and a detachable bottom cover, and the internal assembly part comprises an upper baffle, a lower baffle, a small ball and an auxiliary spring. The upper baffle and the lower baffle both comprise poking pieces, a longitudinal opening allowing the poking pieces to slide up and down is formed in the conical shell, the round rod is rapidly locked by the small ball through the acting force of the lower baffle and the auxiliary spring, the poking pieces of the upper baffle fluctuate downwards, and the device is rapidly unlocked. The nut is simple in structural design, does not need external tools, is convenient to disassemble and assemble, is suitable for any angle, can be replaced and maintained, can replace the function of a nut in many aspects, is also suitable for a smooth round rod which is not suitable for the nut, greatly saves time, improves the disassembly and assembly efficiency of an operator, and reduces the labor intensity of the operator. And an inexperienced person in daily life can also conveniently use the device.

The invention discloses a two-body separation type extraterrestrial celestial body dielectric constant detection device and method, and the device comprises a surface body which is located on the surface of a penetrated medium when penetrating the penetrated medium, and is internally provided with a surface body control module, the surface body control module comprises a first electromagnetic pulse emission source and a first electromagnetic pulse receiving source; and the penetration body is connected with the surface body through a cable and located in the penetrated medium when penetrating the penetrated medium, a penetration body control module is arranged in the penetration body, and the penetration body control module comprises a second electromagnetic pulse emitting source and a second electromagnetic pulse receiving source. According to the invention, in combination with kinetic energy penetration flight capability, dielectric constant in-situ detection of any position of an extraterrestrial celestial body can be realized, such as penetration analysis of orbit-surrounding release.

The invention discloses a texturing device for preparing a back contact battery. The texturing device comprises a texturing groove; the bearing and conveying assembly comprises a bearing and conveying unit, and the bearing and conveying unit comprises a bearing and conveying disc; the driving assembly comprises a driving unit and a transmission unit, the transmission unit comprises a transmission shaft, the transmission shaft is connected with transmission discs, the adjacent transmission discs are connected through connecting rods, and the driving unit is in transmission connection with the transmission discs; the turbulent flow assembly comprises a turbulent flow unit, and the turbulent flow unit comprises a turbulent flow plate. According to the texturing device for preparing the back contact battery, the bearing transmission disc is driven to rotate through the driving assembly, the contact surface is reduced, silicon wafer transmission is achieved, meanwhile, the contact position of a silicon wafer and the bearing transmission disc is changed, and therefore imprint on the back face of the silicon wafer can be reduced; when the driving assembly operates, the spoiler is driven to rotate to promote the flowing of the reaction liquid and the contact reaction with the silicon wafer, so that the texturing quality is improved on the basis of reducing driving sources, simplifying the structure and reducing the energy consumption.

The utility model provides a bending warning lamp with a protective sleeve, which comprises a lamp shade main body and a flexible protective sleeve sleeved on the outer side of the lamp shade main body in an interference fit mode, and step screws for fixing are symmetrically mounted on two sides of the lamp shade main body; first stop buckles which are bent towards the inner side are symmetrically arranged on the two sides of one end of the flexible protective sleeve, second stop buckles which extend towards the inner side are symmetrically arranged on the two sides of the other end of the flexible protective sleeve, and smooth inner walls are formed on the inner sides of connecting walls between the first stop buckles and the second stop buckles; first buckle positions capable of being buckled with the first stop buckles are symmetrically arranged on the two sides of one end of the lampshade body, second buckle positions capable of being buckled with the second stop buckles are symmetrically arranged on the two sides of the other end of the lampshade body, and smooth outer walls capable of being attached to the smooth inner walls are formed between the first buckle positions and the second buckle positions. The bending warning lamp with the protective sleeve overcomes the defects that the protective sleeve of the existing bending warning lamp is easy to separate and layer, the waterproof performance is poor, and the wiring guide pillar deviates from the center.

This invention belongs to the technical field of quartz products, and particularly relates to a quartz ring-type product cleaning basket and its working method. A quartz ring-type product cleaning basket includes a basket body, a bottom hook, side hooks, and a position adjustment structure. The basket body is open at the top; the bottom hook is fixedly installed at the bottom of the basket body, and has multiple first positioning grooves along its length; at least two side hooks are provided, symmetrically arranged above both sides of the bottom hook, and have multiple second positioning grooves; the position adjustment structure is used to adjust the distance between the two side hooks and the distance between the side hooks and the bottom hook. This invention, by adjusting the distance between the two side hooks and the distance between the side hooks and the bottom hook through the position adjustment structure, adapts to quartz ring products of different sizes, thereby improving the versatility of this cleaning basket.

This utility model relates to the field of smartwatches, specifically a smartwatch with a replaceable case. It includes a watch body, a first watch strap rotatably connected to one side of the watch body via a pivot, and a second watch strap rotatably connected to the side of the watch body away from the first watch strap via a pivot. A lower housing is located below the watch body, and several sets of connecting components are arranged on the upper part of the lower housing, respectively located on both sides of the lower housing in a symmetrical arrangement. Several sets of limiting components are located below the watch body, and the limiting components are connected to their corresponding connecting components. Compared to existing technologies, this patent, by setting connecting components and limiting components, allows the first and second limiting blocks to clamp the inverted trapezoidal inclined block with increased force via a threaded rod, thus increasing the contact area. The inverted trapezoidal structure of the inclined block becomes increasingly tighter under pressure. The limiting rod is inserted into the limiting hole, forming an anti-shear redundancy design, improving vibration and impact resistance.

The application discloses a non-welding accessory connecting structure of a wind power tower drum, the wind power tower drum and a construction method thereof, and relates to the technical field of wind power generation equipment. Technical scheme points of the application are as follows: the application comprises a rooting piece for connecting with an accessory structure, a structural adhesive layer coated between a mounting surface of the rooting piece and an inner wall of a tower drum body, and a resin fiber composite material coating layer which is cured and formed to wrap a root part of the rooting piece and is fixedly connected with the inner wall of the tower drum body through the structural adhesive layer. The application can effectively disperse stress generated by accessory load, avoid a welding heat affected zone, welding residual stress and stress concentration at a welding toe, eliminate negative effects of welding of the accessory on fatigue strength of a main steel plate of the tower drum, and make the fatigue strength grade of the main steel plate not be reduced due to connecting details.

The present application belongs to the technical field of pharmaceutical preparations, and relates to a combined preparation of ezetimibe and atorvastatin calcium, in particular to a preparation containing ezetimibe and atorvastatin calcium and a preparation method thereof. A double-layer tablet is formed by an ezetimibe layer and an atorvastatin calcium layer, the ezetimibe layer is composed of ezetimibe and a first excipient, and the atorvastatin calcium layer is composed of atorvastatin calcium and a second excipient; the second excipient does not contain an alkaline stabilizer, and kaolin is used as a filler in the second excipient. By adding kaolin as a filler, the present application can not only avoid the addition of an alkaline adjusting agent, but also improve the stability of ezetimibe and atorvastatin calcium.

The utility model relates to a rotatable supporting leg column and foot stand assembly of office chair, and relates to an office chair leg and foot assembly with a novel connecting structure. The utility model discloses a chair supporting leg column, and a foot stand which is detachably and fixedly connected with the supporting leg column. The foot stand comprises a central sleeve and a chair foot extending outward. The central sleeve has a leg column hole, and the supporting leg column can be inserted into the leg column hole and tightly matched with the leg column hole. A plurality of axial strip-shaped slot holes are uniformly distributed on the inner surface of the leg column hole. A key groove is also arranged on the inner surface of the leg column hole. A key hole is arranged on the supporting leg column. A key column is also arranged and can be clamped in the key groove. The utility model technical scheme can realize quick, simple and easy disassembly and assembly.

The utility model discloses a water cooling plate integrated turbulence structure relates to water cooling plate technical field, and this turbulence structure includes bottom plate, and the top of bottom plate is provided with turbulence structure, and the top of turbulence structure is provided with upper baffle, still include: sealed outer frame, its setting in the external position of bottom plate, turbulence structure and upper baffle, and the top position of upper baffle is provided with the water pass -through port, and the water pass -through port is provided with two, and the upper end of two water pass -through ports all is provided with the water nozzle, and the socket recess is set up on the bottom end inner wall of upper baffle, and the inside of two socket recesses is provided with two fins, has solved the existing water cooling plate through the built -in fan -shaped flow channel structure and has increased the heat exchange area of water cooling plate, but water cooling plate lacks effective turbulence mechanism, leads to the problem of easy partial overheating.

This invention discloses a polymer antistatic wood-plastic composite flooring, relating to the field of wood-plastic composite flooring, comprising joists and wood-plastic composite panels. At least two joists and wood-plastic composite panels are provided, with the two joists arranged parallel to each other and the two wood-plastic composite panels slidably fitted onto the tops of the two joists. A connecting structure is provided on adjacent sides of the two wood-plastic composite panels. In practical operation, when the wood-plastic composite panels are installed outdoors, rainwater will enter the interior of the moisture-proof ring through the heat dissipation holes during rainy weather and drain out from both ends of the moisture-proof ring, reducing the accumulation and erosion of rainwater on the top of the wood-plastic composite panels, thus improving service life. The addition of multiple sets of heat dissipation holes increases the friction on the top of the wood-plastic composite panels, preventing slippage during rainy weather. Because rainwater drains quickly, it dries rapidly after the rain stops due to wind and temperature variations.

The invention relates to the related technical field of medical glass slide cleaning, in particular to integrated cleaning and drying equipment for medical glass slides, which comprises a base part, a cleaning barrel and a ventilation barrel, the cleaning barrel and the ventilation barrel are sequentially arranged on the upper side of the base part, an ultrasonic generator is arranged in the base part, the cleaning barrel is used for accommodating cleaning liquid, and a ventilation opening is formed in the side wall of the ventilation barrel. A filter carrier capable of moving up and down is arranged in the cleaning barrel, a reciprocating device for driving the filter carrier to move up and down is arranged on the base part, the filter carrier comprises a supporting ring, a disturbance inner ring, a static outer ring and a top cover ring, an inner clamping groove drives the bottom of the glass slide to twist to a certain degree so as to change the posture of the glass slide, and the disturbance inner ring can reversely twist so as to change the posture of the glass slide. The posture of the glass slide is recovered, the glass slide twists along with the posture of the glass slide, the probability that the glass slide makes contact with water at different positions is increased, the bottom of the glass slide makes contact with the static outer ring and the disturbance inner ring alternately, and the cleaning blind area is reduced.

The utility model discloses a numerical control machine tool machining table board machining tool which comprises a table board and a machine tool body, connecting strips are arranged on the inner side of the machine tool body, one side of one connecting strip is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a first screw rod. Moving plates are in threaded connection with the two sides, away from each other, of the first screw rod, grooves are formed in one sides of the moving plates, second screw rods are rotationally connected into the grooves, connecting plates are in threaded connection with the two sides, away from each other, of the second screw rods, and L-shaped clamping blocks are arranged on the inner sides of the connecting plates; the rotatable connecting strip is installed in the machine tool body, the two movable plates are driven by the first screw to move relatively, the connecting plate and the L-shaped clamping block are driven by the second screw to move relatively to fix a mold base, then the electric push rod and the supporting plate provide supporting, machining can be facilitated, and meanwhile machining is more convenient due to the small contact face.

The invention discloses efficient metal plate pickling equipment, and relates to the field of metal plate machining, the efficient metal plate pickling equipment comprises a pickling box, mounting sleeves are fixedly connected to the two sides of the interior of the pickling box, a circular frame is movably sleeved with the mounting sleeves, and a limiting plate is fixedly connected to the middle of the inner side of the circular frame; and a first lead screw is installed in the limiting plate, and the first lead screw is sleeved with a transverse plate in a threaded mode. According to the efficient pickling equipment for the metal plates, the angle of the circular frame is adjusted by starting the first motor, the transverse plates are installed at the upper end and the lower end of the inner side of the circular frame correspondingly, in the rotating process of the first motor, a metal plate can be driven to turn over, the angle of the metal plate can be changed, and during pickling of the metal plate, the comprehensiveness of the pickling equipment during spraying is guaranteed; the problems that the pickling solution cannot be sprayed to the back face and the clamping face of the metal plate, so that the pickling efficiency of the metal plate is reduced, and the convenience and the pickling efficiency are improved during plate overturning and angle adjustment are solved.

The utility model relates to the technical field of excavators, in particular to an excavator bucket. According to the technical scheme, the excavator bucket comprises an excavator bucket body, a rotating structure, a threaded structure and a moving plate, tooth holders are fixed to the two sides of the upper surface of the excavator bucket body respectively, a groove is formed in one side of the excavator bucket body, a long groove is formed in the top end of the inner wall of the groove, the rotating structure is arranged at the upper end of one side of the excavator bucket body, and a motor is fixed to the upper end of one side of the excavator bucket body; a transmission shaft arranged on the motor is rotationally connected with the rotating structure, a threaded rod is fixed to one side of the transmission shaft arranged on the motor, the threaded rod is in threaded connection with a threaded structure, and the threaded structure is fixed to the movable plate. The excavator bucket has the advantages that soil excavated in the excavator bucket can be moved out according to needs, and the excavator bucket can excavate again conveniently.

This utility model discloses a protective and impact-resistant resin lens, comprising: a lens; a mounting bevel on the edge of the lens, the bevels on both sides facilitating the lens to be secured in the mounting groove of the frame; multiple slots surrounding the edge of the lens, with shock-absorbing pads placed in the slots; an arc-shaped surface between the inner edge of the bevel and the edge of the lens surface; and a wear-resistant layer on the inner and outer surfaces of the lens, the wear-resistant layer comprising a zirconium oxide film layer, a titanium oxide film layer, and a silicon oxide film layer. The shock-absorbing pads on the edge of the lens reduce the fixing force between the frame and the lens edge, reducing the contact area of ​​the rigid connection, thus reducing the probability of damage to the lens edge upon impact. The wear-resistant layers on the front and back surfaces of the lens protect the lens surface from scratches upon impact.

The utility model provides a novel lifting upper pull rod fixing structure which comprises an upper pull rod and a pull plate arranged on a rear transverse support of a tractor, a pin shaft is arranged at one end, close to the rear transverse support of the tractor, of the pull plate, one end, close to the upper pull rod, of the pull plate is of a U-shaped structure, and a hook is arranged on the upper pull rod and corresponds to the pull plate. A lock pin is arranged between the pulling plate and the hook, the lock pin comprises a shaft body and a stop lever, the shaft body corresponds to the hook, a clamping structure is arranged on the pulling plate, and the clamping structure corresponds to the stop lever. According to the utility model, the pulling plate is arranged on the rear transverse support of the tractor, the pin shaft is arranged at one end, close to the rear transverse support of the tractor, of the pulling plate, the lock pin is arranged between the pulling plate and the hook and can be fixed through the lock pin, and the upper pulling rod, the pulling plate and the vehicle body form a stable triangular structure, so that the shaking of the upper pulling rod is reduced, and the stability is ensured; and the U-shaped structure of the pulling plate can be used for connection, so that the strength is ensured, and breakage is prevented.

The utility model discloses a protection structure of a three-dimensional warehouse goods shelf, which belongs to the technical field of the three-dimensional warehouse goods shelf and comprises a goods shelf body, one end of the goods shelf body is provided with a protection component used for preventing the outside from colliding with the goods shelf body, and the other end of the goods shelf body is provided with a moisture-proof component used for preventing moisture. The goods shelf body is composed of a plurality of supporting frames, the bottom ends of the supporting frames are fixedly connected with placing bases, one ends of the placing bases are fixedly connected with the protection assembly, and the ends, away from the protection assembly, of the supporting frames are fixedly connected with one end of the damp-proof assembly. The two ends of an inner cavity of the supporting frame are each provided with an isolation assembly for preventing goods from colliding in the goods shelf, and the goods bodies are dehumidified through the damp-proof assemblies, so that the situation that steam damages the interiors of the goods is avoided, the protection effect of the three-dimensional warehouse goods shelf on the goods is improved, and the surface of the three-dimensional warehouse goods shelf is prevented from being damaged; the service life of the three-dimensional warehouse shelf is prolonged.