99results about How to "Avoid elastic" patented technology

The invention belongs to the technical field of stamping dies, and particularly discloses a die for trimming and punching automobile chassis metal parts, which comprises an upper stamping die fixed at the moving end of a stamping machine and a lower stamping die fixed on the stamping machine, and a stamping die cavity for forming the automobile chassis metal parts is formed between the upper stamping die and the lower stamping die; the upper stamping die comprises multiple stages of stamping heads so that a material belt passing through a stamping machine can be machined into an automobile chassis metal part step by step. The upper stamping die further comprises a temperature control structure used for conveying refrigerants, and the temperature control structure is used for being matched with the multi-stage stamping head to adjust the first temperature value of the stamping die cavity to be within a preset temperature interval. A temperature control runner used for conveying a refrigerant is formed in the lower stamping die; the temperature control runner is communicated with the temperature control structure so as to adjust a second temperature value of the automobile chassis metal part to be within a preset temperature interval; the temperature control structure has the advantages that heat balance of the die is achieved, material resilience is reduced, finished product precision is improved, die service life is prolonged, and production stability is improved.

The utility model discloses a pocket shaping device which comprises a workbench of a pocket opening machine, a fixing base and a steam connecting hole base with a built-in emitting cavity are arranged below the workbench, a steam cover plate covers the top face of the steam connecting hole base, and the steam cover plate is provided with a plurality of air injection holes communicated with the emitting cavity. A steam pipe communicated with the emission cavity is arranged on the steam connecting hole seat, the steam connecting hole seat is fixed on a movable support, and the movable support is arranged on a fixed seat in a lifting manner. Firstly, high-temperature steam introduced into the steam pipe acts on the garment cloth piece after the pocket shape is folded through the multiple air injection holes, high-temperature shaping is carried out on the inner side of the folded edge of the cloth piece, springback or deformation of the semicircular folded edges on the two sides is avoided, and the device is particularly suitable for processing of a circular pocket;

The mooring unmanned aerial vehicle parking system with the leveling and centering functions comprises a case and an automatic lifting device, the automatic lifting device is arranged in the case and comprises a lifting leveling mechanism and a centering mechanism, a parking platform is arranged at the upper end of the lifting leveling mechanism, and the centering mechanism is arranged on the parking platform; the control system comprises a ground controller and an airborne controller, the airborne controller is electrically connected with the ground controller through a photoelectric composite cable, and the ground controller is electrically connected with the automatic lifting device; the unmanned aerial vehicle is placed on the lifting leveling mechanism, the airborne controller is arranged in the unmanned aerial vehicle, and a camera is arranged on the lower side of the unmanned aerial vehicle and connected with the airborne controller; and the automatic take-up and pay-off device is arranged in the case and is in communication connection with the controller. The landing platform solves the problems that in the prior art, the levelness of the landing platform cannot be adjusted, and the landing platform is prone to colliding with other devices in the withdrawing process.

The invention relates to the field of municipal engineering construction, in particular to gas pipeline construction equipment for municipal engineering. Comprising a conveying mechanism, a supporting and fixing mechanism and a groove cutting mechanism, the supporting and fixing mechanism and the groove cutting mechanism are sequentially arranged in the conveying direction of the conveying mechanism, the groove cutting mechanism comprises a fixed ring, a rotating ring and cutters, the rotating ring is coaxially and rotatably arranged on the fixed ring, and the cutters are evenly distributed on the rotating ring in the circumferential direction of the rotating ring. Each cutter can move in the radial direction of the cutter, the extrusion ring can move in the axis direction of the extrusion ring, a plurality of supporting pieces capable of moving in the radial direction are evenly distributed on the inner side of the extrusion ring in the circumferential direction of the extrusion ring, and an inner supporting driver is arranged on the extrusion ring. The rubber layer on the extrusion ring is elastically attached to the end face of the gas pipeline removal end, a uniform limiting contact face is formed, the stability of axial limiting is improved, the gas pipeline is internally supported through cooperation with the multiple supporting rollers, and the stability of radial limiting is improved.

The utility model relates to the technical field of permanent magnet motors, in particular to a permanent magnet motor rotor shaft which comprises a rotor center shaft, an iron core body and magnetic steel, a first supporting plate and a second supporting plate are fixedly connected to the outer side of the rotor center shaft, and the first supporting plate and the second supporting plate are both provided with hoisting holes. Positioning grooves are formed in the opposite outer sides of the two first supporting plates, limiting digging grooves are formed in the left side and the right side of each first supporting plate and the left side and the right side of each second supporting plate, and the first supporting plates are connected with positioning protruding blocks in a sliding mode through the positioning grooves. Through the arrangement of the first supporting plate, the second supporting plate, the positioning grooves, the limiting digging grooves, the positioning protruding blocks, the steel grooves, the first pressing plate, the second pressing plate and the check blocks, the problems of falling apart of rotor punching sheets and rebounding of magnetic steel in the assembling process can be avoided, and the assembling efficiency of rotors can be effectively improved; and the firm rotor structure can effectively prolong the service life of the rotor and reduce the maintenance cost.

The invention discloses an elastic double-filament core-spun yarn fabric and a production method thereof, and belongs to the technical field of textiles. According to the elastic double-filament core-spun yarn fabric, pure cotton siro-spun yarns are selected as warps A, slub yarns are selected as warps B, and elastic double core-spun yarns are selected as wefts. In addition, the invention further provides a production method of the elastic double-filament core-spun yarn fabric, and the elastic double-filament core-spun yarn fabric is obtained through a warping process, a slashing process, a denting process and a weaving process in sequence. In the sizing process, warp beams of two kinds of warp yarns, namely warp yarns A C36.4 tex and warp yarns B C41.6 tex bamboo, are simultaneously adjusted on a beam creel, and the warp yarns A separated from one beam for common warping are combined with the warp yarns A on other beams. The tensile strength of the double-core-spun fabric is remarkably improved, meanwhile, the double-core-spun fabric has the characteristic of rapid moisture absorption, and the common problems of elasticity weakening and shape deformation of traditional cotton core-spun elastic fabric are effectively solved.

The utility model provides a rolling device. The rolling device comprises a rolling mechanism, a first driving assembly and a second driving assembly. The rolling mechanism comprises a roller assembly and an elastic assembly, and the two ends of the roller assembly are rotatably connected to the elastic assembly through the axis; the elastic assembly is arranged between the driving end of the first driving assembly and the roller assembly, and the first driving assembly drives the roller assembly to move in the vertical direction; and the second driving assembly is in linkage connection with the first driving assembly, and the second driving assembly drives the rolling wheel assembly to move in the horizontal direction. According to the embodiment of the invention, the elastic assembly is arranged to provide buffering force in the process that the first driving assembly drives the roller assembly to move, so that the tab is prevented from being extruded due to excessive force under the condition that the roller assembly presses the tab, the problem that the tab rebounds or arches after being bent is avoided, and the product quality is improved.

This utility model discloses a building construction material processing and cutting mechanism, comprising: an operating table with a fixed groove, a lifting transmission box fixedly connected to the upper surface of the operating table, a lifting threaded rod movably connected to the upper surface of the lifting transmission box, a lifting plate threadedly connected to the side surface of the lifting threaded rod, and a pressure plate fixedly connected to the lower surface of the lifting plate; and a fixed plate with a movable threaded rod movably connected to its side surface, a movable plate threadedly connected to the side surface of the movable threaded rod, a clamping plate fixedly connected to the lower surface of the movable plate, and a cutting blade movably connected to the side surface of the clamping plate. Through this structure, automated fixing and cutting of building construction materials are achieved, keeping the material stable during cutting and preventing it from moving or popping out. It can meet the cutting requirements of materials of different shapes and sizes, ensures consistent cutting accuracy, and improves the cutting efficiency and applicability of the cutting mechanism.

This utility model relates to the field of lint-removing structure technology, and in particular to a lint remover, comprising a lint storage cylinder, a lint-removing cylinder, and at least one positioning structure. The lint storage cylinder includes a first cavity and an opening communicating with the first cavity. The lint-removing cylinder is an arc-shaped cylinder, rotatably disposed in the first cavity with its arc-shaped surface protruding from the opening. Scraping elements are provided on both sides of the opening and between the arc-shaped surface of the lint-removing cylinder. The positioning structure is disposed between the end of the first cavity and the end of the lint-removing cylinder. A bead protrudes from the side of the positioning structure facing the lint-removing cylinder. Multiple grooves are provided on the outer side of the end of the lint-removing cylinder. When the lint-removing cylinder rotates relative to the lint storage cylinder, the bead can slide into different grooves in sequence. This design allows the lint-removing cylinder to stop at multiple preset angles during use, making it convenient for users to adjust the lint-removing surface in different cleaning scenarios, avoiding excessive rolling or rebound, thereby improving cleaning efficiency, and ensuring the stability of the lint-removing cylinder when stored, thus preventing accidental exposure of the sticky surface.

The utility model relates to the technical field of desertification control equipment, and discloses a folding straw square automatic planting device which comprises a material box assembly, a folding guide planting assembly, a ditching assembly, a soil covering assembly, a movement assembly and a machine body. The material box assembly adopts a quick-release design and supports quick replacement; the folding guide planting assembly realizes accurate folding and accurate furrow entering of wheat straws through a V-shaped mold and a brush conveying belt; the ditching assembly is provided with a height-adjustable moldboard plow; the soil covering assembly compacts soil through a press wheel; and the movement assembly realizes full-process automation through a PLC (Programmable Logic Controller). The problems that traditional manual laying is low in efficiency and the grass grid structure is loose are solved, the wind prevention and sand fixation effects are remarkably improved, and the device is suitable for desertification control.

The utility model relates to spring detection field especially, and more particularly to a kind of spring detection device of quick replacement, including detector, slide rail, sliding table, placement platform and positioning groove etc., detector left and right two parts are connected with slide rail, slidingly connected with sliding table between slide rail, sliding table is slidingly connected with detector, sliding table is connected with placement platform, and positioning groove is clamped in placement platform middle part.The utility model is according to the diameter of spring, by push rod, first telescopic spring, rack and pinion cooperation, so that limit block moves and the positioning groove of appropriate specification is clamped and fixed, then installs spring test, is limited by installation frame, is protected by buffer bracket and second telescopic spring buffering, to be able to quickly install and replace different specifications of positioning groove to spring centering limit position detection is carried out simultaneously to realize buffering protection, it is convenient for different diameter spring detection use, prevent spring from springing out and displacement, improve detection security and accuracy.

The utility model relates to the field of industrial oven, especially industrial oven with protection structure, including oven main part, the top fixed connection of oven main part has the symmetrical distribution's rectangular plate, the top of oven main part is provided with first protection plate, one side of first protection plate is provided with connecting rod, and one end of connecting rod is fixedly connected with second protection plate, and first protection plate is opened with accommodating cavity, and first protection plate is provided with the protection mechanism that through connecting rod and second protection plate reinforce oven main part, the top fixed connection of first protection plate has rectangular frame, and one side of oven main part is hingedly connected with the sliding door, one side of sliding door is provided with reinforcing plate, and the top plate of first protection plate is provided with the reinforcing mechanism that through reinforcing plate reinforces sliding door. The utility model discloses when using, can through directly with fixed bolt unloading, let second protection plate of two sides be far from each other, can take down it, will not damage protection structure and box.

This invention relates to the field of machining technology, and discloses a machining method for insert placement and the insert itself. The machining method for insert placement includes the following steps: Step S10, the insert placement blank includes an open area and a closed area. The insert placement blank is clamped onto a CNC machine tool, and the open area of ​​the insert placement blank is CNC machined to obtain a semi-finished insert placement product with a 0.03mm wire EDM machining allowance in the open area. The height of the open area of ​​the semi-finished insert placement product is greater than or equal to 20mm. Step S20, the open and closed areas of the semi-finished insert placement product are wire EDM machined to obtain multiple finished inserts. This invention, by reserving a 0.03mm allowance in CNC machining, is reasonably designed to avoid wire clamping and wire EDM springback problems caused by slow wire cutting, ensuring the surface finish of the product and meeting the machining requirements, while not affecting the wire EDM machining efficiency.

The invention discloses an invisible appliance for class III malocclusion. The invisible appliance comprises an appliance main body structure, a stable occlusal pad, an appliance stable occlusal pad anastomosis window, an extension cavitation bubble, an appliance traction window, a traction device, a retention accessory cavitation bubble, a retention accessory and a force application device, the main body structure of the appliance is made of a transparent high polymer material, and the whole structure is integrally formed and used for connecting all parts of the appliance and assisting in beautifying and fixing; the stable occlusal pad is arranged in a rear tooth area of the upper dentition or the lower dentition and is used for providing an extension gap and a stable occlusal effect for teeth of the upper dentition and the lower dentition; the elongated cavitation has a fixed structural height, and the height is determined by the distance between the inner side wall of the elongated cavitation and a clinical dental crown reference point of the tooth; the appliance traction window is arranged on the cheek side surface, corresponding to teeth, of the elongated cavitation bubble and is used for mounting a traction device. The invention effectively solves the problems of contradiction between aesthetics and application range, insufficient correction stability, long treatment cycle, functional limitation, heavy economic and psychological burden of patients and the like of the existing appliance.

The utility model discloses a composite gradient yielding lining structure for a tunnel, and relates to the technical field of yielding lining structures, the composite gradient yielding lining structure comprises a main supporting soft support, a supporting assembly is arranged below the main supporting soft support, the supporting assembly comprises two fixed inner supporting frames, side fixed supporting frames are arranged on the surfaces of one sides of the two fixed inner supporting frames, and the side fixed supporting frames are arranged on the surfaces of the other sides of the two fixed inner supporting frames. Limiting convex blocks are arranged on the surfaces of one sides of the side fixing supporting frames, a center movable frame is further arranged on the bottom face of the main supporting soft support, connecting shaft bodies are arranged at the two ends of the center movable frame, and the other sides of the two connecting shaft bodies are connected with one ends of fixing inner supporting frames correspondingly; according to the tunnel lining structure, the supporting assemblies are arranged, so that elastic degradation and creep deformation caused by a single yielding layer in a long-term high-pressure environment are avoided, and the long-term stability, the maintenance efficiency and the safety of the tunnel lining structure are remarkably improved.

A convection cooling system is used for cooling a hot stamping plate, comprising a convection box (101), wherein at least one set of fans (102) and corresponding air inlets (103) are respectively arranged at the head end and the tail end of the convection box (101), a strip-shaped air outlet (105) is opened at the top center of the convection box (101) along the length direction, and air guide plates (104) are respectively arranged on both sides along the length direction of the air outlet (105), and the two air guide plates (104) on both sides are arranged to be inclined with respect to the vertical plane. The cross section is a trapezoid that gradually narrows from top to bottom. The system is arranged along the extension direction of the bending head (25) of the hot stamping device, and provides rapid and uniform cooling after the plate is bent into place, so that the bending is fixed and the plate is prevented from rebounding or deforming. The hot stamping device using the above-mentioned convection cooling system is provided with a heating plate (18) connected by a spring (17) and a bending head (25) embedded with a heating component. It automatically folds corners, cools and fixes the shape, and unloads under the control of a PLC program, and has a high degree of automation.

The utility model is applicable to the field of pneumatic technology, and provides a pneumatic crimping tool with a pressing structure, which comprises a workbench. The crimping structure is mounted on the workbench; the pressing structure comprises a mounting frame, a pressing plate, connecting columns and reset springs, the mounting frame is arranged on the workbench, the mounting frame is provided with a pair of mounting holes, the connecting columns are slidably inserted into the mounting holes respectively, the reset springs are inserted into the connecting columns respectively, and the two ends of each reset spring are connected to the mounting frame and the connecting columns; the pressing plate is fixedly mounted at the lower end part of the connecting column; according to the utility model, the mounting rack slides until the pressing plate arranged on the upper end face of the mounting rack is arranged right above the workpiece, and the lower end face of the pressing plate is attached to the workpiece, so that the condition that the workpiece is displaced or deformed and even accidentally popped out or moves due to pressure is avoided, and the safety of operators is ensured.

The application discloses a micro-thermal battery activation device and relates to the technical field of micro-thermal battery activation. The device comprises a battery base body, a mounting seat is fixedly connected to the top of the battery base body, a filler is mounted at the bottom of the mounting seat, a plurality of ignition caps are inlaid between the filler and the bottom of the mounting seat, a circular ring seat is fixedly arranged in the mounting seat, a plurality of striking pins are vertically and slidably arranged in the surface circular holes of the circular ring seat through elastic members; three groups of force storage assemblies are arranged, each group of force storage assemblies corresponds to a group of trigger assemblies, the trigger conditions of the three groups of trigger assemblies are different, the force storage assemblies are matched with the trigger assemblies, multi-factor triggering in a complex environment is realized, the situation of activation failure is avoided, the force storage assemblies are in a non-force storage state in a non-triggering state, the spring is prevented from being in a stressed state for a long time, stress fatigue is avoided, and long-term preservation is more facilitated.

The utility model relates to a kind of supporting and installing rubber ring devices, comprising: feeding assembly and grabbing component, feeding assembly includes first vibrating tray and second vibrating tray, and the output end of first vibrating tray is provided with feeding block, and the output end of second vibrating tray is provided with correct mechanism;Grabbing component includes support frame, first cylinder, second cylinder, push plate and material removing cylinder, support frame is set in the top of first vibrating tray and second vibrating tray, and the telescopic end of first cylinder is provided with slide plate;Second cylinder is connected with slide plate, and the telescopic end of second cylinder is provided with mounting seat;Mounting seat bottom is provided with pneumatic finger, and the clamping end of pneumatic finger is provided with multiple inner supporting claw;Push plate surface is provided with material removing port, and material removing port is set on the outside of inner supporting claw, material removing cylinder is set on mounting seat, and material removing cylinder is connected with push plate.The utility model realizes the automation of rubber ring taking and placing and suit, improves production efficiency, reduces human operation damage, and improves product yield.

The utility model relates to a spring assembling machine of a track socket electricity taking mechanism, which comprises a vibration disc feeding device and a press fitting device connected with the vibration disc feeding device, the press fitting device comprises a workbench, a material receiving table mounted above the workbench, a material pushing mechanism mounted on the outer side of the material receiving table and a material pressing mechanism arranged above the material receiving table, the press-fitting device is connected with the vibration disc feeding device through the material receiving table, the press-fitting device further comprises a fixing support and a sliding base connected with the fixing support in a sliding mode, and the material receiving table, the material pushing mechanism and the material pressing mechanism are all connected to the sliding base. According to the technical scheme, through collaborative design and function integration of all the mechanisms, the defects of manual spring installation in the prior art are effectively overcome. All the mechanisms form an automatic process of feeding, positioning and press fitting through the linkage design of the sliding seats, the conveying, pushing and press fitting processes of springs do not need to be manually intervened, efficient, accurate and automatic assembling of the springs of the track socket electricity taking mechanism is achieved, and the production efficiency is greatly improved.

This invention discloses a modular, environmentally friendly metal-enclosed switchgear, specifically relating to the field of power distribution switchgear technology. It includes: a mounting box, a cabinet, a first track, a second track, a slide rail, and a floating mechanism. The cabinet comprises a rectangular shell composed of multiple plates. An elastic reset structure is provided on the inner side of the rectangular shell. The rectangular shell deforms under the pressure of the mounting box, allowing the elastic reset structure to provide elastic support for the rectangular shell in the horizontal plane, thereby compensating for the assembly tolerance between the mounting box and the slot. This invention, by providing slide rails on both sides of the mounting box, which cooperate with the first and second tracks on the inner side of the cabinet, constitutes a stable dual-track guiding system. This significantly reduces the resistance during the insertion and removal of the mounting box, achieving nearly interference-free smooth sliding, thereby greatly reducing wear on the guide surface and contact surface, and extending the overall service life of the drawer module and the cabinet.

This invention relates to the field of positioning technology for thin-walled workpieces, and discloses a positioning device for preventing offset of thin-walled workpieces based on CNC machine tools. It aims to solve the technical problems of easy deformation during positioning of thin-walled workpieces and poor adaptability of traditional clamping blocks. The device includes a CNC machine tool body, a rotating chuck, an adjustment drive assembly, a push rod assembly, and a tensioning positioning assembly. A frustum-shaped push block converts rotational motion into linear motion via a screw and nut mechanism. This, in conjunction with a limiting assembly, drives the push rod assembly to synchronously and uniformly extend and retract radially, causing a spring steel sheet with a pre-positioned section to achieve curvature self-adaptation. The pre-positioned section is a sliding compensation arc surface section, adapting to thin-walled pipes of different diameters while maintaining surface contact. The device has two sets of staggered tensioning positioning rings, forming a full-circumferential, gapless support for the inner wall of the pipe. This device avoids stress concentration problems caused by line contact, effectively preventing deformation of thin-walled pipes, balancing positioning firmness and deformation prevention requirements, and significantly improving the processing qualification rate and production efficiency of thin-walled pipes.

The invention relates to the technical field of cutting devices, and provides a sponge production full-automatic cutting device which comprises a rack, the rack comprises a first support and a second support, the first support and the second support are each provided with a conveying mechanism used for conveying sponge, and the two conveying mechanisms are connected through a first synchronous belt wheel mechanism; a gap between the first support and the second support forms a cutting space, and the upper side and the lower side of the cutting space are each provided with a cutting mechanism used for cutting sponge. The fixing mechanism is used for fixing the sponge, and the sponge is firstly fixed when the cutting mechanism cuts the sponge; and the driving mechanism is used for driving the conveying mechanism to drive the sponge to move, and when the conveying mechanism stops conveying, the driving mechanism can drive the two cutting mechanisms to cut the sponge at the same time. According to the technical scheme, the working efficiency of the cutting device is improved.

A reciprocating razor net beneficial to hair entry, comprising a net body, wherein a plurality of curved hair entry grooves are arranged on the net body, the hair entry grooves are open on both sides, the width of the first end of the hair entry grooves gradually decreases from outside to inside, and the width of the second end of the hair entry grooves gradually expands and then gradually decreases from outside to inside. The utility model realizes the function of combing and guiding hair, improves shaving efficiency, reduces shaving friction, improves the fitting degree of the net and the shaving comfort.

The utility model discloses flat vacuum cup forming equipment convenient to fix, and relates to the technical field of vacuum cup production. According to the flat vacuum cup forming equipment convenient to fix, by arranging the fixing frame, the fixing blocks, the clamping holes, the clamping blocks, springs, fixing plates, bolts, fixing bases and a long pipe, the function of fixing the long pipe is achieved, the long pipe is prevented from moving in the water swelling process, and therefore a round pipe expands according to a preset shape under the uniform pressure environment; the size precision and the shape consistency of the flat vacuum cup can be improved, and the defective rate of products is reduced; by arranging the fixing base, the connecting rod, the connecting frame, the fixing rod, the connecting ring, the electric telescopic rod, the first adjusting rod, the clamping block and the manufactured long pipe, the function of multiple fixing of the manufactured long pipe is achieved, the fixing function of the manufactured long pipe is further enhanced, and the stable fixing mode can prevent the manufactured long pipe from accidentally moving or popping out in the high-pressure water expansion process.

The invention discloses a granulator for waste plastic recycling, and relates to the technical field of plastic recycling, the granulator for waste plastic recycling comprises a workbench, a granulator body and a fixing frame, a conveying box is arranged in the middle of the fixing frame, a polishing barrel is arranged on the lower side of the conveying box, and a recycling box is arranged on the right side of the polishing barrel; plastic particles are subjected to vibration screening by arranging the screening mechanism, the filter plate is made to do parabola reciprocating motion under cooperation of a vertical groove and an arc-shaped groove, the dispersion and screening effect among the particles is promoted, two sliding rods with different lengths driven by a cam form sequential beating, the short sliding rods conduct basic vibration on the filter plate, and the screening effect is improved. When the filter plate starts to reset and is located at the highest point of the track, the long sliding rod conducts secondary strong beating on the lower right end of the filter plate on time, so that particles clamped in meshes are shaken off, shaking cleaning is conducted on the screen face, and the problem that a traditional vibrating screen is prone to being blocked is fundamentally solved.

The utility model belongs to the field of steering oil tanks of steering systems of commercial vehicles, and provides a steering oil tank upper cover with rainproof and dustproof functions. The outer side of the oil tank body is coaxially sleeved with the cylindrical protective eave, the inner wall of the protective eave is in clearance fit with the outer wall of the oil tank body, the bottom end of the protective eave is lower than the upper end face of the oil tank body, and the top end of the protective eave is higher than the upper end face of the oil tank body; the large end of the funnel-shaped connecting piece is connected with the top end of the protective eave in a sealed mode, and the small end of the funnel-shaped connecting piece is connected with the bottom end of the steering oil tank upper cover body in a sealed mode. The upper cover of the steering oil tank is made into a step type, a first step is used for applying force to the tank cover by hands when the oil tank is opened or tightened, a second step is used for covering the outer edge of the upper portion of a tank body, a certain gap is reserved to guarantee air permeability of the oil tank, and oil liquid deterioration and whitening caused by splashing or side blowing leakage of rainwater into the oil tank through the upper portion of the tank body are prevented.

The utility model provides a handle anti-pinch structure and a generator set. The handle anti-pinch structure comprises a grip, a first swing arm, a second swing arm, a limiting pin and an elastic piece. The first swing arm and the second swing arm are arranged at the left end and the right end of the grip respectively. The side, facing the second swing arm, of the first swing arm is provided with a first wall face. The limiting pin is matched with the first swing arm in a telescopic mode, and the limiting pin can stretch out of the first wall face or retract into the first wall face. The elastic piece is used for applying elastic force to the limiting pin so that the limiting pin can stretch out of the first wall face. The limiting pin is designed on the first swing arm, and the limiting pin can extend out of the first wall surface after the first swing arm and the like rotate outwards by utilizing the elastic force applied by the elastic piece to the limiting pin, so that even if the handle falls back, the limiting pin can also abut against the panel, and the return position of the first swing arm and the like is limited; and it is guaranteed that the grip, the first swing arm and the second swing arm cannot completely abut against the panel, hurt to the hands of a user is avoided, and safety is improved.

This utility model relates to a thread grinding machine, including a base, a chuck and a tailstock for clamping workpieces, and a horizontally movable wheel frame. A grinding wheel spindle and a drive motor are mounted on the wheel frame. A material discharge hole is formed on the upper surface of the base between the chuck and the tailstock. A funnel-shaped material collection bin with openings at both the top and bottom is installed at the bottom of the material discharge hole. A cleaning brush adapted to the inner wall of the material collection bin is installed inside the bin. The cleaning brush is connected to the base via a horizontal slide, and one end of the cleaning brush is connected to the wheel frame. The cleaning brush moves synchronously with the wheel frame, cleaning debris adhering to the inner wall of the material collection bin. This utility model, by providing a material discharge hole on the base and installing a funnel-shaped material collection bin, utilizes the horizontal movement of the wheel frame to drive the synchronous movement of the cleaning brush, achieving periodic cleaning of the inner wall of the material collection bin, effectively avoiding equipment failure and reduced machining accuracy caused by debris accumulation.

This utility model discloses a retaining ring support fixture. It includes: a slider chuck with a protrusion at its bottom; a base with a guide groove that mates with the protrusion of the slider chuck; a central hole at the tail of the base; a guide screw that passes through the central hole of the base and is fixedly connected to the slider chuck; a wing nut that is threadedly connected to the end of the guide screw; one end of the slider chuck being fixedly connected to the retaining ring; and the other end of the base being fixedly connected to the retaining ring. The slider chuck can move axially within the guide groove. Rotating the wing nut drives the slider chuck to generate axial displacement along the guide groove, thereby achieving elastic deformation control of the retaining ring. This retaining ring support fixture, through the threaded transmission of the wing nut and the guide screw, and the sliding engagement of the slider chuck in the guide groove, can achieve precise elastic deformation control of the retaining ring; assembly can be completed by a single person.