263results about How to "Avoid fatigue" patented technology

The invention discloses a chamfer defect detection method, device and equipment and a storage medium, and relates to the technical field of defect detection.The method comprises the steps that an obtained to-be-detected device image is preprocessed, and chamfer contour points and chamfer contour point pixel coordinates are determined in the preprocessed image; correcting the pixel coordinates of the chamfer contour points, and fitting a chamfer edge straight line by using the corrected pixel coordinates of the chamfer contour points; according to the chamfer edge straight line, screening the corrected chamfer contour point pixel coordinates, and determining a target chamfer end point; and calculating the actual chamfer length based on the target chamfer endpoint, and comparing the actual chamfer length with the preset chamfer length to judge whether the chamfer has defects or not. According to the method, the detection requirements of chamfers of different shapes and sizes can be met by preprocessing and correcting the images, fatigue and subjective judgment errors possibly existing in traditional manual detection are avoided through automatic image processing and data analysis processes, and the detection efficiency is improved.

The invention relates to the technical field of power equipment, and discloses a wind power generation torsion-resistant flexible cable, which comprises a cold-resistant torsion-resistant outer covering sleeve body, an ethylene propylene rubber insulating layer sleeve body is arranged in the cold-resistant torsion-resistant outer covering sleeve body, a torsion-resistant reinforced layer sleeve is arranged in the ethylene propylene rubber insulating layer sleeve body, and the torsion-resistant reinforced layer sleeve comprises a copper conductor core body group. A reinforcing core body group is arranged in the copper conductor core body group; the cold-resistant torsion-resistant outer covering sleeve body comprises a polyurethane elastomer sheath and an aramid fiber embedded sleeve, and the aramid fiber embedded sleeve is embedded in the inner wall of the polyurethane elastomer sheath and wraps the ethylene propylene rubber insulating layer sleeve body. The torsion-resistant quality of the guide core wire structure, the insulation sleeve structure and the cold-resistant outer sleeve structure is reinforced, and the torsion-resistant quality of the outer cold-resistant outer sleeve structure with the largest bearing stress during bending is greatly improved, so that the torsion-resistant and tensile quality of the whole cable is improved, and the cold-proof and wear-resistant protection effects of the outer sleeve structure are guaranteed.

The invention relates to the technical field of clip-on ammeters, and discloses an intelligent clip-on ammeter which comprises a clip-on ammeter body, a clip-on head is rotatably connected in the clip-on ammeter body, a wrench is fixedly connected to the left side of the clip-on head, and a fixing mechanism is arranged on the periphery of the clip-on ammeter body. The clamp-type ammeter comprises a clamp-type ammeter body, a fixing mechanism is arranged at the bottom of the clamp-type ammeter body, a handheld mechanism is arranged at the rear side of the clamp-type ammeter body, a limiting mechanism is arranged at the bottom of the fixing mechanism, and the fixing mechanism comprises a fixing assembly and a pressing assembly. When the clamp-on ammeter is used, the clamp-on ammeter body is fixed under the action of the base, the fixing frame and the concave frame, and the connecting shaft is connected with the fixing sleeve, so that the clamp-on ammeter body can be lifted under the action of the supporting rod, and the clamp-on ammeter body can measure the current of a cable at a high position.

A deep sea ball valve with an improved valve seat sealing system comprises a valve body, a valve rod, a valve element, a valve seat box and a valve seat matched with the valve element, the valve seat comprises a supporting ring, the supporting ring comprises a sealing face used for being matched with the valve element in a sealing mode, and the sealing face comprises an upper sealing angle and a lower sealing angle. The upper sealing angle is used for supporting the valve element and forms sealing with the valve element, the lower sealing angle is in clearance fit with the valve element when the valve is opened and is in interference fit with the valve element when the valve is closed, compared with one sealing, the upper sealing angle and the lower sealing angle are safer, spherical dirt is wiped away in the opening and closing process of the upper sealing angle, and the sealing effect is better. The lower sealing angle is protected, sealing is more durable, the sealing angle does not make contact with the valve element when the valve is in a normally-open state, the problem of material fatigue is avoided, and the problem of root leakage of an original sealing ring is solved through the integral design that the supporting ring and the sealing face are combined into one.

The invention belongs to the technical field of hydrogel materials, and discloses a carboxylated chitosan modified silicone hydrogel contact lens material and a preparation method thereof. The preparation method comprises the following steps: mixing a siloxane monomer, a zwitterionic monomer, a first cross-linking agent, an initiator and a first organic solvent, and carrying out polymerization reaction to obtain silicone hydrogel; and mixing the silicone hydrogel, carboxylated chitosan, a second cross-linking agent and a second organic solvent, and carrying out a cross-linking reaction to obtain the carboxylated chitosan modified silicone hydrogel contact lens material. The zwitterionic monomer is introduced into the siloxane monomer polymerization process, and the carboxylated chitosan is adopted to modify the silicone hydrogel, so that the protein adsorption resistance and antibacterial property of the contact lens material are effectively improved. Meanwhile, the raw materials are wide in source, the preparation method is simple and easy to operate, and large-scale industrial production can be achieved easily.

The invention relates to the technical field of intelligent sports data analysis, in particular to an intelligent sports data analysis method and system based on the Internet of Things and a medium. The method comprises the following steps: acquiring real-time state data of physical exercise of an athlete through an intelligent bracelet worn by the athlete; based on an electronic video recording device, motion posture data mapping is carried out according to the real-time state data of the athletes in physical exercise, and motion posture mapping data is obtained; performing instantaneous explosive power evaluation on the motion attitude mapping data, performing abnormal load limit coupling processing, and performing motion risk level evaluation to obtain motion risk level data; making an intelligent motion feedback strategy based on the motion risk level data to obtain the intelligent motion feedback strategy; and sending the intelligent motion feedback strategy to the intelligent bracelet to execute sports data analysis. The intelligent sports data analysis technology is optimized, so that the intelligent sports data analysis technology is more perfect.

The utility model discloses a packaging device for lithium battery production, which comprises a processing table, the top of the processing table is provided with a blanking groove, the top of the processing table is rotatably connected with a placing plate, the top of the placing plate is provided with a plurality of open grooves, the plurality of open grooves are internally provided with clamping assemblies, and the clamping assemblies are arranged on the processing table. An adjusting assembly is arranged at the top of the containing plate, and a support and two fixing plates are fixed to the top of the machining table. Through cooperative use of the processing table, the discharging groove, the placing plate, the open groove, the packaging plate, the discharging pipe, the connecting groove, the control panel and other structures, the lithium batteries to be packaged can be automatically fed, moved to the position below the packaging plate and discharged from the discharging groove after being packaged by the downward-moving packaging plate, so that the packaging efficiency of the lithium batteries to be packaged is improved. Automatic feeding, packaging and discharging operation of the lithium batteries is achieved, fatigue of workers caused by long-time manual feeding and discharging operation is avoided, and then the packaging efficiency of the lithium batteries is improved.

The invention relates to the technical field of adaptive interaction, and discloses a platform interaction interface adaptive adjustment method and system based on image recognition, and the method comprises the steps: obtaining a user form image; performing facial expression recognition according to the user form image to obtain a facial emotion component; performing body language recognition according to the user form image to obtain a body emotion component; performing calculation according to the facial emotion component and the limb emotion component to obtain a user emotion vector; adjusting the page layout of the platform according to the user emotion vector and a preset page layout automatic adjustment strategy; and calculating an attention score according to the user emotion vector, and adjusting the teaching content difficulty of the platform according to the attention score and a preset teaching content difficulty automatic adjustment strategy. The method has the following effects that the platform interaction interface can be adaptively adjusted according to the use emotion of the user, and the adjustment efficiency is improved.

The present invention discloses a double-drill-bit building wall drilling device, including a shell, a power device, a cooling device and a drilling device, characterized in that a power device is provided at one end of the shell, a cooling device is provided at one side of the power device, a drilling device is connected to one side of the cooling device, and the drilling device includes a first transmission mechanism and a drilling mechanism. Beneficial effects: When the power device is running, the drilling device is driven to drill holes in the wall, and the cooling device is used to cool the drilling device while drilling holes, so that the temperature of the drilling device is prevented from being too high and damaged, and the service life of the machine can be effectively extended. When the power device is running, the drilling mechanism is driven to run through the first transmission mechanism, and the wall is drilled through the coaxial reversal of drill bit 1 and drill bit 2.

The invention relates to the technical field of charging piles, in particular to a wire storage device for a charging pile gun wire. The device comprises a cable storage frame, the cable storage frame comprises two supporting rods which are arranged at an interval, a plurality of guide rods which are sequentially arranged along the supporting rods are fixedly connected between the two supporting rods, sliding blocks used for driving cables to reciprocate are arranged on the guide rods, and annular components for the cables to penetrate through are arranged on the sliding blocks respectively. A plurality of sliding blocks are arranged on the two supporting rods, lead screws corresponding to the sliding blocks are installed between the two supporting rods, the sliding blocks can be driven by the corresponding lead screws to move along the corresponding guide rods in a reciprocating mode, the moving directions of the sliding blocks corresponding to every two adjacent lead screws are opposite, the lead screws are in synchronous transmission connection through a transmission mechanism, and one lead screw is in transmission connection with a driving device. The device can solve the problem that a gun line in an existing charging pile is locally prone to fatigue and damage, manpower is saved when the device is used, the structure is simple, and operation is convenient and fast.

The invention relates to an oxygen generation control device capable of relieving driving fatigue, and belongs to the technical field of automobile safety and auxiliary driving, the oxygen generation control device comprises an oxygen generation shell, a top cover is clamped to the upper side of the oxygen generation shell, a bottom plate is clamped to the lower side of the oxygen generation shell, and a molecular sieve oxygen generation part is fixedly mounted on the right side in the oxygen generation shell; an air compression block is mounted on the left side of the molecular sieve oxygen generation part, an oxygen conveying assembly is arranged on the left side of the oxygen generation shell, and a clamping assembly is arranged on the back of the oxygen generation shell; the oxygen conveying assembly comprises a communicating pipe communicating with the left side of the oxygen generating shell. According to the oxygen generation control device capable of relieving the driving fatigue, the oxygen pipe at the end of the hose is inserted into the nostrils of a driver, and then the molecular sieve oxygen generation part and the air compression block are used for conveying oxygen into the oxygen pipe, so that sufficient oxygen is provided for the driver, the fatigue feeling caused by oxygen deficit is reduced, and the relieving effect is achieved.

The invention relates to the field of angle steel machining, in particular to an automatic feeding device for a steel structure angle steel production line, angle steel is placed on a mounting frame, the mounting frame comprises a bottom frame and side frames perpendicularly and fixedly connected to one side of the bottom frame, and a containing space used for containing the angle steel is formed between the bottom frame and the two side frames; comprising a placing platform for placing the mounting frame and a feeding platform arranged at the feeding end of the production line, the manipulator is arranged between the placing platform and the feeding platform and is used for automatically adjusting the direction of the angle steel on the placing platform and then placing the angle steel on the feeding platform; and the pushing assembly is mounted on the feeding platform and is used for sequentially pushing the angle steel on the feeding platform to a production line. The angle steel adjusting device has the effects of reducing the labor intensity of workers and improving the operation efficiency when the angle steel direction is adjusted.

The utility model discloses a measuring scale for long jump, and belongs to the field of measuring scales. The utility model relates to a measuring scale for long jump, which comprises a measuring box and further comprises a telescopic sleeve which rotates in the measuring box; the distance sensor is fixed in the measuring box, and the distance sensor is matched with the end part of the telescopic sleeve; the connecting plate is fixed at one end, far away from the measuring box, of the telescopic sleeve; the slender rod is fixed on the connecting plate; the measuring block is arranged on the thin rod; the laminating plate is fixed on the measuring block; the first control button is arranged on the measuring block; the controller is arranged in the measuring box; according to the utility model, the sand in the sandpit is effectively prevented from influencing the measurement result, so that the accuracy of long jump distance measurement is effectively improved.

The invention discloses a sintering furnace for preparing low-dielectric ceramic, and relates to the technical field of ceramic preparation. The sintering furnace comprises a sintering furnace body, a separation cage, a rotary switching mechanism and a collection box, the sintering furnace body comprises an outer furnace body and an inner furnace body, and the inner furnace body is fixedly installed in the outer furnace body. The separation cage is pushed into the inner furnace body, so that the low-dielectric ceramic is located in a cage cover of the separation cage, and in the glue discharging stage of low-dielectric ceramic sintering, the separation rotating plates are rotated, so that the separation rotating plates in the outer ring are converted into the mutually-attached sealing state from the interval state pointing to the axis, and the low-dielectric ceramic sintering is achieved. When gas and solid waste are generated during glue discharging of the low-dielectric ceramics, solid dust and particles fall onto the surfaces of the partition rotating plates which are tightly arranged, the gas drives powder on the partition rotating plates and powder on the low-dielectric ceramics to be discharged out of the furnace, and the situation that the powder falls onto a heating part in the inner furnace body is avoided; and the phenomena of oxidation, corrosion, non-uniform temperature distribution and the like of a heating part are avoided.

The utility model provides a payment terminal with a magnetic head waterproof structure, which relates to the field of financial transaction equipment and comprises a casing, one side of the casing is provided with a card swiping slot, one side in the casing close to the card swiping slot is provided with an installation slot used for installing a magnetic head assembly, the installation slot is provided with a sealing cover, and the sealing cover is inserted into the installation slot to form an isolation chamber. The magnetic head assembly is installed in the isolation chamber and comprises a connecting line, and the connecting line extends out of the isolation chamber and is electrically connected with the mainboard. The magnetic head assembly further comprises a magnetic head and a support, the magnetic head is installed on the support, the support comprises a top cover, the connecting line penetrates through the top cover, the top cover is provided with an annular protrusion around the connecting line, the top cover is provided with an insertion hole in a sealed insertion mode, and the annular protrusion is inserted into the insertion hole in a sealed mode. According to the utility model, the magnetic head assembly is isolated from the internal components of the device through the structure, the waterproof and dustproof effects of the financial transaction device are improved, the application scene of the device is expanded, and the service life of the device is prolonged.

This utility model relates to the field of surgical instrument technology, and in particular to a laparoscopic minimally invasive surgical forceps, comprising a long rod, one end of which is fixedly provided with a holding component, and the other end of which is provided with a clamping component connected to the holding component. A spreading component is sleeved on the outer wall of the long rod. The spreading component includes a sleeve sleeved on the long rod, one side of which is provided with a fixing ring fixed to the long rod. A second spring is sleeved on the outer wall of the sleeve, and one side of the second spring is connected to an operating ring sleeved on the sleeve. One end of the operating ring is hinged to the spreading rod through a hinge rod, and one end of the spreading rod is hinged to the outer wall of the sleeve. This laparoscopic minimally invasive surgical forceps, by setting up a spreading component, utilizes the elastic force of the second spring to spread the spreading rod outward, thereby spreading other organs in the surgical area to both sides to expose the position of the surgical area. This facilitates various surgical operations for the surgeon and avoids the problem of surgical difficulties caused by obstruction.

This utility model relates to the field of valve body technology, and in particular to an impact-resistant high-temperature and high-pressure valve body, comprising a valve body and an impact-resistant plate. The inner wall of the valve body has an inlet chamber and a drain chamber, which are connected. A limiting groove is formed in the inner wall of the inlet chamber, and the impact-resistant plate abuts against the limiting groove, with its outer peripheral wall in sliding contact with the inner wall of the limiting groove. Multiple flow holes are formed on the outer wall of the impact-resistant plate, with the diameter of the flow holes increasing from the middle to both ends. In this utility model, by setting up the impact-resistant plate, the impact force of the fluid is transferred from the inner wall of the valve body to the impact-resistant plate, avoiding direct impact on the valve body. The design of the flow holes with increasing diameter from the middle to both ends reduces the flow velocity and disperses the pressure when the fluid passes through, further reducing the impact of the fluid on the valve body, preventing fatigue, wear, and cracks in the valve body material, extending the service life of the valve body, and ensuring safe operation of the equipment.

The utility model provides a kind of analytical modeling method of model measuring point three-dimensional coordinates and Euler angle, the utility model is suspended under crossbeam by crane by scanning workpiece, solve the deformation problem of large thin-walled part different from its working posture due to the workpiece to be scanned by gravity, scanner is installed at the end of manipulator, realize all-around scanning to workpiece, according to the distance signal of scanner to control the scanning distance between scanner and workpiece to be scanned, solve the fatigue of operator long time handheld scanner, while can stably keep scanner and workpiece to be scanned directly optimal scanning distance, the utility model can satisfy the automatic scanning of different size sheet metal parts in whole vehicle reverse engineering, solve the deformation problem of large sheet metal part different from its working posture due to gravity when being placed on traditional scanning platform, while three-dimensional coordinates and Euler angle of measuring point in whole vehicle crash test and body-in-white modal test can be obtained quickly, improve scanning efficiency, shorten reverse engineering cycle etc.

The utility model discloses a magnesia carbon brick size detection table. A table; the frame body is fixedly mounted on the upper end surface of the workbench; the fixed plate is arranged on one side wall surface of the upper end of the frame body; the fixed block is arranged at the lower end of the side wall surface, far away from the frame body, of the fixed plate; the fixed rod is fixedly mounted in the frame body; the sliding block is arranged in the frame body and is in sliding connection with the fixing rod; the sliding block is fixedly mounted on one end surface of the sliding block; the first measuring scale is arranged on the outer wall surface of the frame body; the second measuring scale is arranged on the outer wall face of the sliding block and can drive the sliding block to move under the action of the sliding block so that the sliding block can be matched with the fixing block to clamp the magnesia carbon brick, meanwhile, the first measuring scale and the second measuring scale can facilitate workers to measure the length and the width of the magnesia carbon brick at the same time, and the measuring efficiency can be improved. And convenience is brought to people.

The utility model discloses a wide-edge plastic bag sealing machine convenient to adjust, which belongs to the technical field of sealing machines and comprises an operation table, a sliding component is arranged at the top end of the operation table and comprises a moving groove formed in the top end of the operation table, a moving block is slidably connected in the moving groove, and one end of the moving block is fixedly connected with a grip. A placement table is fixedly connected to the top end of the moving block, an arc-shaped groove is formed in the top end of the placement table, an arc-shaped placement frame is fixedly connected into the arc-shaped groove, a heating rod is placed in the arc-shaped placement frame, and a rotating assembly is arranged at the top end of the operation table. According to the plastic bag cleaning device, the connecting rod, the L-shaped moving plate, the cleaning plate and the guide plate are arranged, the connecting rod is driven to move when the rotating pressing plate rotates, the L-shaped moving plate drives the cleaning plate and the guide plate to move to clean a solution attached to the surface of the heating rod when a plastic bag is melted, and therefore the solution is prevented from being attached to the heating rod; therefore, the sealing effect of the plastic bag is prevented from being influenced.

An electric bench clamp comprises a bench clamp base; the fixed jaw is fixedly arranged at one end of the bench clamp base; the movable jaw is arranged on the bench clamp base in a sliding manner, and the movable jaw is used for completing clamping operation with the fixed jaw; the transmission mechanism is arranged on the bench clamp base and is used for driving the movable jaw to move on the bench clamp base; and the driving motor is arranged on the bench clamp base, and the driving motor is used for driving the transmission mechanism. According to the technical scheme, manual participation in the clamping process can be avoided, the working efficiency is improved, and the controllability of the clamping force of the bench clamp is improved.

The utility model discloses a kind of cover plate die structure of multi-step riveting, including upper die holder, upper backing plate, upper clamping plate, stop plate, stripper plate and lower die holder, outer guide sleeve, ball guide sleeve and outer guide column are provided between the upper die holder and lower die holder, the top surface of lower die holder is provided with lower bolster plate, the top surface of lower bolster plate is connected with lower backing plate by sliding assembly, riveting tray is provided on the lower backing plate, for supporting cover plate product, riveting punch of the bottom angle that this die is set from front to back by upper clamping plate is smaller and smaller, the distribution stamping of cover plate product is realized, rivet hole on cover plate product due to excessive stress and fatigue caused by one-time stamping is avoided, and then the stability of riveting is improved, and upper die holder is pressed every time, and cover plate product in different stamping stages can be simultaneously stamped, riveting efficiency is improved, structure is simple, efficient, suitable for popularization and application.

The present invention discloses a connection structure for assembled box-shaped UHPC compression members, comprising a pair of adjacently arranged box-shaped UHPC compression members and a pair of steel box beam joints arranged between the adjacent box-shaped UHPC compression members, wherein the pair of steel box beam joints are respectively connected to the pair of box-shaped UHPC compression members; one end of the steel box beam joint is pre-embedded and fitted in the inner cavity of the box-shaped UHPC compression member, and the other end extends to the outside of the box-shaped UHPC compression member to form an extended section, and the end of the extended section is provided with a connecting surface, and a plurality of through holes are opened on the connecting surface; the adjacent connecting surfaces are fitted, and the through holes on the adjacent connecting surfaces correspond to each other one by one, and the adjacent connecting surfaces are connected by a connecting assembly arranged in the through hole. The present invention also provides a construction method for the above-mentioned connection structure. The assembled box-shaped UHPC compression member of the present invention has the advantages of simple structure, safety and reliability, high construction efficiency, and low construction cost.

The utility model discloses a kind of pipe bender for automobile seat framework processing, relate to automobile engineering technical field.The utility model includes operation platform;The upper surface of operation platform is respectively fixed with conveying assembly and bending assembly;The conveying assembly includes two baffle one of symmetrical fixation, the adjacent side of two baffle one is respectively equipped with two inclined plate of symmetrical fixation on the upper surface of operation platform, rotatingly arranged between two inclined plate, the both ends of rotating shaft are all through inclined plate and are connected with baffle one.The utility model is cooperated between the specific components of conveying assembly and bending assembly, realizes automatic bending to pipe fitting, without artificial fetch one by one workpiece, then bending to pipe fitting is pressed again, pipe fitting is fetched after being pressed, simplify artificial operation process, avoid worker long time work to cause fatigue and then reduce enterprise processing efficiency.

The present invention relates to the technical field of water conservancy engineering, and specifically to a disc-type buoy gate support mechanism, comprising: a gate body frame, a gate body, a buoy, an anchoring base, four support mechanisms and four oil supply mechanisms, the gate body is plugged into the gate body frame in a direction perpendicular to the ground, the buoy is arranged on the gate body, the anchoring base is arranged at the bottom of the gate body frame, four support mechanisms are symmetrically arranged on the water-facing surface and the water-receiving surface of the gate body frame in a group of two, two support mechanisms located on the same plane are symmetrically distributed on both sides of the gate body, the support mechanism consists of two support assemblies, the two support assemblies are placed side by side in the horizontal direction, four oil supply mechanisms are respectively arranged on the gate body frame, and each oil supply mechanism is connected to the corresponding two support assemblies, the present invention can provide different sizes of support forces according to the change of water level, avoid gates and other mechanisms from being subjected to excessive stress, and increase the risk of material fatigue and damage.

The invention discloses a composite material pipeline connecting method, which comprises the following steps: connecting pipelines through glue, and then gluing at the butt joint of the pipelines by adopting a first half pressing piece and a second half pressing sleeve which are matched with the butt joint of the pipelines in shape; the first half pressing piece and the second half pressing piece are connected and locked to achieve pipeline assembly type cementing with local covering or complete covering, controllable consistency of pipeline connecting quality is guaranteed, the buckling piece can improve the strength of the pipeline connecting position, the force bearing performance of the pipeline is improved, the pipeline cementing defect is overcome, fatigue and through cracks are prevented, and the service life of the pipeline is prolonged. And the water seepage risk of the marine floating type floating body is reduced.

The invention discloses an unmanned aerial vehicle hanging heavy load mechanical ground wire installation device, and belongs to the technical field of unmanned aerial vehicle application, the unmanned aerial vehicle hanging heavy load mechanical ground wire installation device comprises an unmanned aerial vehicle and a rope, the rope is connected below the unmanned aerial vehicle, a lifting hook is installed below the rope, a battery is arranged in the unmanned aerial vehicle, and a supporting frame is installed at the bottom of the unmanned aerial vehicle. According to the invention, by combining the unmanned aerial vehicle and the mechanical device, the installation time of the grounding wire is greatly shortened, and the installation can be completed within 40 minutes generally, so that the working efficiency is improved. The number of required operators is reduced, the labor cost is reduced, the physical output of the operators is reduced, and fatigue and potential accidents caused by too long working time are avoided. The device is suitable for ground wire installation in various complex environments, is not influenced by electromagnetic interference and distance, and has a wide application range and strong practicability.

The utility model provides a cap-connected neck protection pillow which comprises a neck pillow body and a cap body, and the cap body is connected with the neck pillow body. Wherein the cap body is provided with an eyeshade corresponding to the eyes of a user, the two ends of the eyeshade are connected with the cap body, and the lower edge of the eyeshade is provided with a structure conforming to the outline of the nose of the user. According to the neck protection pillow connected with the cap, the cap body can cover the head, the back face of the neck and the side face of the neck of a user, the neck can be prevented from being sunburnt by dazzling sunlight, the eyeshade can better conform to the face of the user, the eyes can be effectively shielded, the eyes are prevented from being stimulated by the sunlight, and through cooperation of the neck pillow, the cap body and the eyeshade, the user can feel more comfortable. When a user wears the hat, sun shading and sun blocking can be effectively achieved, the better shading effect is provided, the comfort requirement of the user in the journey is met, and the sleep quality is improved.

The utility model discloses a kind of self-tightening mechanical chucks, comprising: two clamp components, two clamp components are diametrically opposed to be set, each clamp component includes moving frame, tight inner shaft, tight claw ring, tight claw and gland shaft, one end of tight inner shaft passes through moving frame, several openings are set on tight claw ring, each opening is equipped with a tight claw, the other end of tight inner shaft is inserted into tight claw ring, one end of gland shaft is inserted into the other end of tight inner shaft and is connected with tight inner shaft, gland shaft is connected with tight claw ring, gland shaft and tight inner shaft are connected with tight claw. Through the application of the utility model, a kind of self-tightening mechanical chuck is presented, which can effectively solve the problem of traditional chuck winding core extraction difficulty, when winding core needs to be taken out, only need to control moving frame away from each other, with the help of first spring and second spring release elastic potential energy, tight claw can be reset quickly, and the problem of winding core extraction difficulty is solved.

This utility model relates to a fully automatic assembly machine for connecting pipe fittings, including a support base plate. A turntable is rotatably connected to the support base plate, and multiple sets of assembly carriers are evenly distributed around the rotation center of the turntable. Correspondingly, the assembly carriers on the support base plate are arranged circumferentially with a welding ring feeding station, a copper pipe feeding station, and a combination stamping station. The welding ring feeding station is equipped with a welding ring feeding assembly for conveying welding rings one by one to the assembly carrier. The copper pipe feeding station is equipped with a copper pipe feeding assembly for transferring copper pipes and vertically inserting them into the assembly carrier. The combination stamping station is equipped with a combination assembly assembly for conveying an iron cover to the assembly position and inserting a copper pipe with a welding ring inserted into an opening in the side wall of the iron cover. This fully automatic assembly machine can automate the feeding, inspection, position correction, combination stamping, and unloading processes in the assembly process without human intervention, effectively reducing labor costs.