35results about How to "Stability protection" patented technology

The invention discloses a blade protection device for a wind driven generator, and particularly relates to the technical field of wind driven generators, the blade protection device comprises a blade, a protection sleeve is mounted on the outer side of the blade, two limiting boxes are fixedly connected to the outer side of the protection sleeve, fixing assemblies are mounted in the limiting boxes, and a protection mechanism is mounted on the outer side of the protection sleeve; the outer side of the protective sleeve is fixedly connected with two nylon belts, one end of each nylon belt is fixedly connected with a rack belt, the inner side of the protective sleeve is fixedly connected with a plurality of first rubber strips and second rubber strips, and the first rubber strips are installed on one sides of the second rubber strips; the fixing assembly comprises a pull rod. By arranging the fixing assembly and the protection mechanism, the protection sleeve can be prevented from loosening or falling off under the wind action or other external force interference, so that it is ensured that the blade tip can be continuously and stably protected, meanwhile, collision and friction between the blade tip and the surrounding environment in the transportation process can be effectively reduced, and the service life of the blade tip is prolonged. Therefore, the risk that the blade tip is damaged is reduced.

The invention discloses a double-rotor unmanned aerial vehicle of an independent structure, and belongs to the technical field of unmanned aerial vehicles, the double-rotor unmanned aerial vehicle comprises an unmanned aerial vehicle body, mounting rotors are fixedly connected to the front side and the back side of the unmanned aerial vehicle body, and lower protective covers are fixedly connected to the ends, away from each other, of the two mounting rotors; two lower connecting blocks are fixedly connected to the outer surface of each lower protective cover, an upper protective cover is clamped in each lower protective cover, and compression springs arranged at equal intervals are fixedly connected to the bottom surface of each upper protective cover. According to the double-rotor unmanned aerial vehicle of the independent structure, through cooperation of the installation rotors, the lower protective cover and the upper protective cover, a rotating propeller rotating at a high speed of the double-rotor unmanned aerial vehicle can be protected conveniently, and then through cooperation of a lower connecting block, a compression spring, an installation ring, an upper connecting block and a connecting bolt, the rotating propeller can be protected conveniently; the lower protective cover and the upper protective cover are stably used for protecting the rotating propeller, and the effect of improving the flight safety of the unmanned aerial vehicle is achieved.

This invention discloses a protective garment for epicondylitis of the humerus based on an antibacterial and thermally conductive composite material, belonging to the field of medical protective gear technology. It includes a forearm support and an upper arm support, which are rotatably connected by an adjusting mechanism. The upper arm and forearm sleeves are 3D printed using an antibacterial and thermally conductive composite material, which comprises a polylactic acid matrix, a graphene oxide-silver nanoparticle-carbon nanotube ternary composite filler, and phase change microcapsules, with a thermal conductivity of 1.5-4.0 W·m. ‑1 ·K ‑1 With an antibacterial rate of ≥95%, it solves the problems of poor thermal conductivity, lack of antibacterial properties, and uneven heat therapy in existing protective gear.

The utility model discloses a kind of electric power cable distribution box capable of realizing cable butt joint, including box, the both sides of box are fixedly installed with several installation rings, the top of box is fixedly installed with ceiling, the bottom of ceiling inner cavity is fixedly installed with air pump, the inside of ceiling is fixedly installed with folding pipe, several air holes are arranged in the inside of folding pipe, the inside of folding pipe both ends is fixedly installed with metal mesh plug, the inside of box is fixedly installed with two groups of mounting plate, box inside is fixedly installed with clamping wire tube. By the air pump being set, the input end of air pump extracts the airflow inside box, airflow enters the cone box inside through the air hole of bottom plate at this time, and enters the air pipe inside through through-hole, after filtering sundries and dust by the metal mesh cylinder and dust filter cylinder in the air pipe inside, airflow is introduced into the box inside, airflow enters the inside of folding pipe through air hole, and is discharged to outside through folding pipe, increase the heat dissipation efficiency and protection degree, overall use effect is good.

A glass-wrapping foam mechanism includes a support base, a lifting structure, a first fold foam structure, a second fold foam structure, and a positioning component. The positioning component is fixed to a first positioning support seat and a second positioning support seat below, both of which are fixed to the support base below. The lifting structure is located between the first and second positioning support seats and includes a transfer base plate. One end of the first fold foam structure is fixed to the lower end of the transfer base plate along the Y-axis, and one end of the second fold foam structure is fixed to the lower end of the transfer base plate along the other direction of the Y-axis. This invention is used for packaging stacked mobile phone glass with protective foam for stacked mobile phone glass. It has high overall work efficiency, can quickly complete the protective foam action, and can provide more stable protective foam for glass packaging. It can avoid the safety problem of scratching the glass during packaging, thereby improving product quality and increasing production capacity.

The utility model discloses a mobile lifting appliance for a new energy battery pack. The mobile lifting appliance comprises a support frame, the two connecting rod mechanisms are arranged on the supporting frame; the four clamping jaw mechanisms are respectively arranged on the supporting frame; the four clamping jaw mechanisms are connected with the two ends of the connecting rod mechanism respectively and comprise a first guide rail and a second guide rail. The first sliding block is arranged on the first guide rail in a matched mode; one end of the sliding plate is fixedly connected with the first sliding block, and the other end of the sliding plate is connected with the connecting rod; the second sliding block is arranged on the second guide rail in a matched mode and fixedly connected with the bottom of the U-shaped frame. A clamping jaw; the two ends of the connecting plate are perpendicularly connected with the first guide rail and the second guide rail respectively, one end of the connecting plate is connected with the connecting rod mechanism, and the connecting plate moves on the supporting frame through the connecting rod mechanism to drive the clamping jaw to move. The position of the clamping jaw can be adjusted according to the actual size of the battery pack.

The utility model relates to an anti-aging power cable for a new energy automobile, and belongs to the field of power cables, the anti-aging power cable comprises a conductor layer, an inner protection layer, a shielding layer and an outer protection layer which are sequentially arranged from inside to outside, the inner protection layer and the outer protection layer are each internally provided with a stabilizing layer, and each stabilizing layer comprises a tensile layer and a supporting layer. The tensile layer is arranged on the side, away from the conductor layer, of the supporting layer. When the cable is used, the inner protection layer and the outer protection layer firstly provide dual protection for the conductor layer, meanwhile, the tensile layer improves the tensile capacity of the outer protection layer and the inner protection layer, the supporting layer provides the supporting capacity of the outer protection layer and the inner protection layer, the edge folding phenomenon of the inner protection layer and the outer protection layer is reduced, and the service life of the cable is prolonged. And the protection capability of the outer protection layer and the inner protection layer on the conductor layer is improved, so that the service life of the cable is prolonged.

The present invention relates to a pharmaceutical composition for treating inflammatory diseases, in which hydrophobic manganese oxide is loaded on micelles so as to be stably protected in vivo thereby easily being delivered to a target site. In addition, the hydrophilic and hydrophobic regions of micelles are bonded with a reactive oxygen species (ROS) cleavable linker and decomposed in response to active oxygen species at an inflammatory site, thereby efficiently releasing hydrophobic manganese oxide particles, and released hydrophobic manganese oxide can generate oxygen to change the microenvironment of the target site, thereby improving the effects of physiologically active substances loaded on the micelles.

This invention provides a fusion protein and a corresponding mRNA delivery system and applications. The amino acid sequence of the fusion protein is shown in SEQ ID NO.1. The mRNA delivery system comprises a cationic polymer, the aforementioned fusion protein, and mRNA. The cationic polymer can encapsulate and protect the negatively charged mRNA by neutralizing it. The 3'UTR terminus of the mRNA binds to the C-terminus of the L7Ae protein in the fusion protein, and the Listeriolysin O terminus of the fusion protein is linked to the N-terminus of the L7Ae protein. This invention also provides the application of the aforementioned fusion protein in the preparation of mRNA delivery systems, and the application of the aforementioned fusion protein or the aforementioned mRNA delivery system in the preparation of mRNA transfection reagents, mRNA drugs, or mRNA vaccines. The novel fusion protein can be prepared in large quantities with high yield and controllable quality. This novel mRNA delivery system has a simpler composition, a simpler preparation process, and lower cost. Moreover, in this novel mRNA delivery system, the mRNA is encapsulated and protected by a cationic polymer (such as protamine), making it more stable.

The invention belongs to the technical field of biological medicine, and discloses an enteritis targeted probiotic delivery system and a preparation method and application thereof, the system comprises: i) a recombinant plasmid for coding an anti-inflammatory functional protein, the plasmid comprising an anti-inflammatory peptide fragment, a surface protein modification and an antibiotic switch; ii) Escherichia coli chassis bacteria which are subjected to genetic engineering modification and have the capability of high yield of outer membrane vesicles; and iii) introducing the recombinant plasmid into the escherichia coli chassis bacterium to obtain a recombinant engineering bacterium. The delivery system disclosed by the invention can target intestinal inflammation parts, deliver anti-inflammatory proteins through the outer membrane vesicles, and specifically release anti-inflammatory factors in an inflammation microenvironment, so that intestinal inflammation response is relieved; according to the present invention, the method can achieve the precise targeting on the intestinal inflammation, can effectively control the remote delivery and the continuous secretion of the anti-inflammatory protein in space and time, has advantages of strong targeting property, lasting effect, small side effect and the like, and provides the new strategy for the safe and efficient treatment of the intestinal inflammation diseases.

The utility model provides a security camera shell support which comprises a camera protection box, the rear side of the camera protection box is in bolted connection with a supporting and fixing rod, the outer side of the supporting and fixing rod is connected with a rod supporting device in a clamped mode, and the rear side of the supporting and fixing rod is in bolted connection with a wall face fixing structure. According to the security camera shell support, the camera protection box is arranged, so that the camera is firmly protected in the shell protection structure, the safety of the camera is improved, the emergency power supply and the electric telescopic rod are arranged, the camera can be flexibly stored, the power supply is arranged for emergency treatment, and the safety of the camera is improved. And by arranging the supporting and fixing rods, firm supporting and fixing can be achieved, the safety of the device is improved, by arranging the rod supporting device, the supporting and fixing rods can bear force together, accidents are prevented, and the safety of the device is improved.

This utility model discloses an airflow homogenization module, comprising: a coupling seat with an air inlet; a homogenization module installed inside the coupling seat, with a first annular air passage between the homogenization module and the coupling seat, the first annular air passage being connected to the air inlet; a protection module installed inside the homogenization module, with a second annular air passage between the homogenization module and the protection module, the second annular air passage being connected to the first annular air passage; gas enters the first and second annular air passages sequentially from the air inlet, and the gas achieves a homogenized state in the second annular air passage. This utility model, through the combination of the first and second annular air passages, can achieve sufficient homogenization of the protective gas, enabling the protective gas to form a stable protective gas field around the coupled energy beam, thereby improving the stability and shaping effect of the coupled energy beam.

The present invention relates to the technical field of film-forming descaling agents, and in particular to a boiler water treatment agent based on polyamines, a preparation method thereof, and a use method thereof. The raw materials for preparing the boiler water treatment agent include: polyamines and composite chelating agents, and the molar ratio is 1: (4-6). The boiler water treatment agent provided by the present invention has a wide applicable temperature and pressure range, can withstand extreme conditions of up to 600°C and 17.8MPa, has excellent film-forming performance, can form a denser and more stable protective film layer on the metal surface, and provides reliable anti-corrosion protection. The corrosion rate of carbon steel in boiler water is as low as 0.12g / (m 2 h).

The utility model discloses a sand blasting and dust removal device for a civil defense door, which relates to the technical field of sand blasting and dust removal and comprises an outer cover, a dust removal mechanism is arranged at the top of the outer cover, and two groups of suckers are arranged on two sides of the bottom end of the outer cover. According to the sand blasting and dust removing device for the civil defense door, sand blasting is locally covered through the outer cover, gas in the outer cover is prevented from leaking to pollute the environment, the stability of the outer cover can be improved through the suction cups, gas leakage caused by shaking is reduced, and then an exhaust fan is moved, so that a fan, a pushing plate and a conveying pipe move at the same time; dust collection work can be conducted on different positions through movement of a conveying pipe, gas can be pushed to move through movement of a pushing plate, dust can be conveniently absorbed through the conveying pipe, a fan is located in the bottom end of an outer cover and can blow dust in the bottom end of the outer cover, the dust can conveniently enter the conveying pipe, the dust can be comprehensively absorbed, and the dust collection efficiency is improved. And residues are reduced.

This utility model belongs to the field of power distribution technology, specifically relating to a circuit device with progressive overpower protection and a wireless fast charger. The circuit device includes: an input rectifier unit, a power conversion unit, a feedback control unit, an overpower protection trigger unit, and an output unit. The overpower protection trigger unit is configured to output an overpower protection signal to the feedback control unit when the output power of the output unit exceeds a threshold. The feedback control unit is also configured to output a corresponding control signal to the power conversion unit. By setting an overpower protection trigger unit between the feedback control unit and the output unit, this utility model can gradually reduce the output voltage and gradually increase the current when the output power of the output unit is abnormal, until the voltage drops below 3.3V to trigger the cut-off protection. This avoids the impact of direct power failure on the load, overcomes the problem of abnormal load operation and data loss caused by direct power failure, and achieves a smoother protection process.

The surface cover plate of the alloy smelting non-vacuum induction furnace comprises a first semi-annular panel, a second semi-annular panel, a crimping plate, a first bolt, a second bolt, a third bolt and a fourth bolt, the first semi-annular panel and the second semi-annular panel are spliced to form a splicing seam and a receding notch for material pouring, and the splicing seam and the receding notch are opposite in position. The crimping plate is pressed and fixed on the splicing seam, one end of the crimping plate is fixed on the first semi-annular panel through a first bolt, the other end of the crimping plate is fixed on the second semi-annular panel through a second bolt, and a third bolt penetrates through the crimping plate and then is fixed on the first semi-annular panel; the fourth bolt penetrates through the pressing connection plate and then is fixed to the second semi-annular panel, and the third bolt and the fourth bolt are arranged close to the splicing seam. The surface cover plate of the alloy smelting non-vacuum induction furnace is stable in splicing, not prone to deformation, long in service life, convenient to disassemble, and capable of stably protecting a lining body in the furnace and facilitating maintenance of the interior of the furnace.

The utility model provides a multi-layer co-extrusion film and a disposable biological process bag, and relates to the field of film materials for bioreactors. The multi-layer co-extrusion film sequentially comprises a liquid contact layer, a secondary inner layer, a first bonding layer, a blocking layer, a second bonding layer and a protective outer layer from inside to outside, the liquid contact layer and the secondary inner layer are both ethylene-vinyl acetate copolymers, and the blocking layer is of a double-layer structure composed of an ethylene-vinyl alcohol copolymer layer and a nylon layer. Wherein the nylon layer is attached to the second bonding layer. The multi-layer co-extrusion film designed by the utility model has good biocompatibility, gas barrier property, bending resistance and puncture resistance, and can meet various use scenes.

The invention provides a protection type data information acquisition terminal, and relates to the technical field of information acquisition terminals, the protection type data information acquisition terminal comprises a protection shell and an information acquisition host, a protection cabin is arranged above the middle part of the protection shell, and the information acquisition host is placed in the protection cabin; two sets of rotating shaft frames are fixedly installed on the inner walls of the left side and the right side of the protective shell, a gear is arranged in each set of rotating shaft frame, a second sliding rod and a first sliding rod are arranged on the two sides of each set of rotating shaft frame correspondingly, the gears rotate to drive the first sliding rods to move upwards, and the first sliding rods move upwards to jack the inclined top plates upwards; the inclined top plate moves upwards to drive the upper protection cover to rotate, the upper protection cover covers the protection bin after rotating by more than 90 degrees, at the moment, the protection shell can play a good protection effect on the information acquisition host, and the protection shell can well protect the information acquisition host from being damaged in a bumpy environment. And the protection performance of the information acquisition host is greatly improved.

This invention relates to the field of medical device technology and discloses a pressure-adaptive ankle brace, comprising a first fastening part, an ankle protection part, and a second fastening part connected in sequence. The first fastening part is a transversely elongated structure that wraps around and fixes the upper part of the ankle. The second fastening part includes a first sub-strap and a second sub-strap, which pass through the sole of the foot and adhere to the first fastening part to secure the ankle. The first and second fastening parts are each equipped with adhesive components. A pressure sensor is provided in the inner layer of the ankle protection part. This invention changes the passive restraint mode of traditional ankle braces, achieving real-time pressure sensing and response.

The invention discloses a method and a system for realizing channel protection based on software logic. The method comprises the following steps: acquiring a local service table and a relay service table of equipment by utilizing a main controller; monitoring abnormal information of a channel link, querying a local service table and a relay service table by the main controller according to the abnormal information, and executing corresponding actions; and after the controller executes a corresponding action, the main controller revises the local service table and the relay service table according to an action execution result. Through logic operation of upper software, 1 + 1 protection is carried out on a communication channel under the condition of not depending on line code editing, channel services are effectively isolated, the universality and flexibility of protection are improved, meanwhile, the control process and table content are optimized, the overall performance of the scheme is ensured, and the method is suitable for popularization and application. Therefore, rapid and stable channel service protection can be realized in various service scenes.

The invention relates to the technical field of current transformers, and discloses a high-precision metering type current transformer which generally adopts a fluxgate technology to realize high-precision measurement and comprises a shell, a mounting groove is formed in the shell, a mounting bolt used for fixing a wire is arranged on the mounting groove, a fixing cover is arranged on the shell, and the fixing cover is arranged on the shell. The shell is provided with a fixing cover, the fixing cover is provided with a placing groove, the fixing cover is provided with a through hole for a wire to pass through, the placing groove is used for placing the wire and a mounting bolt, the shell is provided with a fixing assembly, and the fixing assembly is used for limiting movement of the fixing cover. According to the invention, the wire and the mounting bolt are protected by the placement groove, and the wire passes through the through hole, so that the fixed cover can be stably protected, and if water is sprayed on the shell, the fixed cover can protect the joint of the wire and the shell, and the condition that the wire is damaged due to water collision is reduced.

The invention relates to a self-service cabinet which comprises a cabinet shell, a display screen, a host, a printing module and a recording module, the cabinet shell is used for integrally installing the printing module, the recording module, the host, a power module and the display screen, the printing module can be used for printing medical reports, detection results and photos for inspection, and the recording module can record optical discs for inspection. And the display screen is embedded on the cabinet shell and is connected with the host, the printing module and the recording module so as to control the printing of files and photos and the recording of optical discs. The printing module and the recording module are integrated together, so that printing of a medical report and recording of a CT optical disc can be completed at the same time when the system is used in a corresponding scene environment, the use efficiency can be improved, and time can be saved.

The invention belongs to the technical field of forklift steering control, and discloses a forklift hydraulic driving device which comprises a driving support, a stabilizing mechanism is fixedly mounted in the driving support, an oil pump is fixedly mounted at the top of the stabilizing mechanism, and a partition valve is fixedly mounted in the oil pump. The two sides of the oil pump are fixedly connected with hydraulic driving devices. Oil in a hydraulic oil tank is sucked into an oil pump through a hose, then the oil pump pumps the sucked oil into a piece valve, then an external controller sends a signal to enable the piece valve to control hydraulic driving devices on the two sides through the oil pump, and then the hydraulic driving devices are controlled by the piece valve to do telescopic motion; when the hydraulic driving device does telescopic motion, the connecting mechanism drives the fixed connecting block to enable the rotating shaft to deflect in direction, and compared with a traditional device, the device has the advantages that the power advantage of the hydraulic driving device can be fully exerted to steer through effective control of an oil pump and a partition valve.

The utility model discloses a three -dimensional intelligent sheep body tape measure device, related to sheep body tape measure technical field, including horizontal axis dimension measuring stick, the middle position of horizontal axis dimension measuring stick bottom is rotatively connected with the measuring stick connecting hinge, and the lower extreme of horizontal axis dimension measuring stick outside measuring stick connecting hinge is provided with longitudinal axis dimension measuring stick, the lower extreme rotatively connected with vertical dimension measuring stick of longitudinal axis dimension measuring stick. This three -dimensional intelligent sheep body tape measure device, through each dimension measuring stick has ultrasonic detection probe, can realize non - contact precision determination body tape, can through data storage and central control storehouse's USB interface and export data to computer end charge, and electronic ear mark read -write ware can automatically identify the sheep that has worn RFID electronic ear mark and record ear number, sheep ear number information and performance determination data match, convenient after determination end will body tape performance determination data direct export to computer end.

The utility model provides a multi-element magnesium-based hydrogen storage alloy preparation device. The preparation device comprises a reaction chamber, the rapid quenching pressure unit is arranged in the reaction chamber and comprises a gas inlet pipeline and a swirling gas pipeline, at least part of the gas inlet pipeline extends out of the reaction chamber, and the swirling gas pipeline is obliquely arranged at an inclination angle of 45 degrees relative to the gas inlet pipeline; the smelting and rapid quenching unit is arranged in the reaction chamber; the smelting and rapid quenching unit comprises a drip-type crucible arranged in the reaction chamber, a reaction product is stored in the drip-type crucible, and the inlet end of the drip-type crucible is communicated with the gas outlet end of the swirling gas pipeline, so that inert gas is conveyed into the drip-type crucible through the obliquely arranged swirling gas pipeline; applying uniform pressure to the reaction product in the molten state in the dripping type crucible, so that the reaction product drips out from the bottom of the dripping type crucible; the problem that in the prior art, the pressure applied to the to-be-reacted material is not uniform due to airflow formed by conveying inert gas into the to-be-reacted material is solved.

The utility model relates to the technical field of anti-cracking, and discloses anti-cracking tempered glass which comprises tempered glass, an installation groove hole is formed in the outer surface of the tempered glass, a protection assembly is arranged on the outer surface of the installation groove hole, the protection assembly comprises a protection corner, the outer surface of the tempered glass is movably connected with the protection corner, and the outer surface of the tempered glass is movably connected with the protection corner. During daily installation, the T-shaped clamping blocks are inserted into the installation groove holes, then the second elastic telescopic protection plates are stretched, the clamping-in elastic telescopic blocks are clamped into the clamping grooves, then the other set of second elastic telescopic protection plates are stretched for the same operation, and finally the sides of tempered glass are protected by the protection plates and the protection corners. Meanwhile, due to the influence of the thrust of the springs and the thrust of the clamped elastic telescopic blocks, buffering spaces are indirectly reserved between the sides of the tempered glass and the protection plates and between the sides of the tempered glass and the protection corners, and finally the functional effects that when the tempered glass is protected, bolt fixing is not needed, and an impact buffering space is reserved are achieved.

The utility model discloses a flame-proof battery assembly for a new energy electric vehicle, which comprises a mounting frame and a bottom plate, cross beams are mounted on the outer walls of the two sides of the mounting frame, fixing holes are formed in the outer walls of the cross beams, a plurality of groups of anti-collision beams I and anti-collision beams II are mounted on the inner wall of the mounting frame, and anti-collision beams III are mounted on the inner wall of the mounting frame. The multiple sets of first anti-collision beams and the multiple sets of second anti-collision beams are obliquely installed in the installation frame, and the first anti-collision beams and the second anti-collision beams are arranged in an X shape in a pairwise crossed mode and form a pair in a pairwise mode. According to the utility model, by arranging devices such as the anti-collision beam I and the anti-collision beam II, when a certain group of anti-collision beam II or anti-collision beam III is damaged, the anti-collision beam II or the anti-collision beam III can be disconnected from the mounting frame by disassembling the screw II at the end part of the anti-collision beam II or the anti-collision beam III, and then the anti-collision beam I and the anti-collision beam II are taken out from the clamping groove III and the clamping groove I for replacement; therefore, the whole shell does not need to be replaced, the replacement and maintenance cost is reduced, and the maintenance efficiency and economy are improved.

The utility model relates to the technical field of chimney caps, in particular to a biomass curing barn environment-friendly chimney cap which comprises a plurality of supporting frames, a plurality of connecting frames are fixedly connected among the supporting frames, and one side of each connecting frame is fixedly connected with a connecting ring. According to the utility model, the meshes on the dustproof net are arranged to be 200 meshes, so that the meshes are fine and dense, dust in smoke can be effectively retained at the bottom end of the civil engineering chimney, workers can conveniently clean and process the discharged smoke and dust in a centralized manner, the dust emission of the chimney is correspondingly reduced, and the working efficiency is improved. And according to the effect that the edge joint of the dustproof net is located on the inner side of the V-shaped arrangement of the supporting frame and the connecting frame, the edge joint of the dustproof net can be stably protected, the situation that the edge joint of the dustproof net is corroded by the outside is reduced, and therefore the using effect of the dustproof net is improved, and the chimney cap is easy to manufacture and install and high in practicability. The cost is low.

This utility model relates to the field of straight seam welded pipe technology, and proposes a straight seam welded pipe with an external protection structure. The pipe includes a pipe body with an external protection structure installed on it. The external protection structure includes an outer plate, protective cylinders, protective rings, an adjustment assembly, an adjustment component, an adjustment component, and a limiting pad. A protective groove is formed at the top of the outer plate, and an anti-slip pad is fixedly connected inside the groove. Multiple protective cylinders are in contact with the anti-slip pads, and the pipe body is located on the upper side of the outer plate. Multiple protective cylinders are arranged in an array on the outer plate, and the pipe body is connected to the multiple protective cylinders through them. A sponge pad is fixedly connected to each of the multiple protective cylinders, and each sponge pad has a through-hole matching the pipe body. Two protective rings are movable towards each other inside each protective cylinder. This technical solution solves the problem in the prior art where it is inconvenient to adjust the external protection range according to the specifications of the straight seam welded pipe.