1028 results about "Bilateral symmetry" patented technology

The invention discloses a two-dimensional bionic multi-stage conical flow divider for laser processing and an application device thereof, and the two-dimensional bionic multi-stage conical flow divider is characterized in that the upper surface and the lower surface of the two-dimensional bionic multi-stage conical flow divider are provided with micro-groove structures, and the micro-groove structures are longitudinal parallel grooves distributed in a linear array; the two-dimensional bionic multistage cone flow divider is of a bilateral symmetry structure and specifically comprises a single primary main cone and a plurality of secondary small cones on the single side, the secondary small cones are distributed on the two sides of the primary main cone at equal intervals, and the included angle between each secondary small cone and the primary main cone ranges from 9 degrees to 21 degrees. The cone angle of the first-stage main cone structure is 9-21 degrees, the length of the first-stage main cone structure is 8-12 mm, the cone angle of the second-stage small cone structure is 9-21 degrees, the length of the second-stage small cone structure is 1-3 mm, the depth of the micro-groove structure is 35-45 micrometers, and the center-to-center distance of the micro-groove structure is 28-35 micrometers. According to the two-dimensional bionic multistage conical flow divider for laser processing and the application device thereof, the problem that the efficiency of spontaneous continuous separation of existing multiphase immiscible organic liquid drops is low is solved.

The invention relates to the technical field of transformer coils, and discloses a transformer coil adopting a rotary positioning pin array structure, which comprises an interlayer insulating cylinder, a left coil winding body and a right coil winding body wound on the outer wall of the interlayer insulating cylinder, and a plurality of partition bent plates mounted in the middle of the outer wall of the interlayer insulating cylinder, adjusting plates slidably sleeve the outer wall of the interlayer insulating cylinder in a bilateral symmetry manner. The transformer coil adopting the rotary positioning pin array structure can effectively solve the problems that in the prior art, a sectional type transformer coil mostly depends on a single or few limiting parts, so that movement of coil sections in the axis direction or uneven interlayer gaps due to alignment deviation during assembly or thermal expansion and cold contraction during operation is difficult to deal with; the radial direction is difficult to resist the rigidity difference of materials or radial deviation caused by long-term operation vibration, so that dislocation between coil layers and local extrusion damage of an insulating layer are caused, and the insulating property and the short-circuit resistance of the transformer are further influenced.

The invention discloses a carrying table for special-shaped optical glass processing, and relates to the technical field of optical glass processing.The carrying table comprises a workbench and semicircular glass, the semicircular glass is placed on the workbench, a fixing plate is fixed to the workbench, and second air cylinders are fixed to the lower end face of the fixing plate in a bilateral symmetry mode; a bottom plate is fixed to the output end of the second air cylinder, a positioning mechanism is installed on the bottom plate, supporting mechanisms are arranged on the side edge of the positioning mechanism in a front-back symmetry mode, each supporting mechanism comprises a transverse plate fixed to the workbench, a rotating block is connected to the transverse plate through a bearing, and the rotating angle of the rotating block ranges from 0 degree to 45 degrees. According to the platform deck for processing the special-shaped optical glass, the adjustable rotary supporting mechanism is adopted, so that the platform deck can adapt to positioning and supporting of semicircular glass with different diameters, the adaptability of the platform deck is effectively guaranteed, the supporting effect on different positions of one side of a concave surface of the semicircular glass can be achieved, and the stability of the semicircular glass is guaranteed.

The invention discloses a material tensile strength testing device suitable for a high-humidity and high-salt environment, the material tensile strength testing device comprises a box body, two connecting plates are fixedly connected to the rear side, close to the top, of an inner cavity of the box body, the two connecting plates are arranged in a bilateral symmetry mode, and two concentric-square-shaped frames are jointly and fixedly connected between the two connecting plates; through mutual cooperation of a driving gear, a concave mounting plate, an A-shaped mounting plate, a driving motor, a cleaning gear, an inner gear ring and the like, the outer surface of a reinforcing steel bar can be pretreated, and the situation that a test result is affected by corrosion of the surface of the reinforcing steel bar is prevented; through mutual cooperation of a component moving motor, a connecting plate, a double-thread lead screw, a moving block, a salt spray test box, a linkage rod, absorption cotton and other components, when a steel bar is tested in a continuous salt spray environment, salt spray liquid drops are attached to the outer surface of the steel bar, so that the surface of a sample is condensed; a local electrolyte membrane can be prevented from being formed on the surface of the steel bar to accelerate pitting corrosion or galvanic corrosion.

The invention relates to the technical field of pipe fitting welding, and particularly discloses a metal pipe fitting welding device which comprises a machine body for containing pipe fittings and a portal frame fixedly installed at the top of the machine body, an air cylinder is fixedly installed at the top of the portal frame, a sliding table mechanism is arranged at the top of the machine body, a welding gun is arranged on the sliding table mechanism, and a driving mechanism is arranged on the machine body. Two extrusion inner supporting mechanisms in bilateral symmetry are arranged on the driving mechanism, longitudinal pressing force is applied to the transverse pipe and the two vertical pipes through pressing plates, the transverse pipe and the two vertical pipes are further longitudinally limited, and the problem that the welding quality is affected due to the fact that the transverse pipe and the two vertical pipes are not tightly attached is solved; and meanwhile, the two deviation preventing plates enter the pipe fitting to be in clearance fit with the vertical pipes and the transverse pipe, so that the transverse pipe and the two vertical pipes are further horizontally limited through ingenious utilization of the tiny clearance, the welding stability is further improved, and deviation of the transverse pipe and the two vertical pipes in the horizontal direction in the welding process is avoided.

The high-speed AC cradle double-turntable driven by the torque motor comprises two A-axis turntables, two C-axis turntables and a bridge plate, the two A-axis turntables are installed on the left side and the right side of the bridge plate in a bilateral symmetry mode, and the two C-axis turntables are installed in the middle of the bridge plate in a bilateral symmetry mode; each group of A-axis rotary table comprises an A-axis working table, an A-axis torque motor stator, an A-axis torque motor rotor, a motor water-cooled jacket, an A-axis brake mechanism and an A-axis encoder assembly, and each group of C-axis rotary table comprises a C-axis working table, a C-axis torque motor stator, a C-axis torque motor rotor, a C-axis brake mechanism and a C-axis encoder assembly. The two groups of A-axis rotary tables and the two groups of C-axis rotary tables of the double rotary tables are driven by torque motors, and the A-axis encoder assemblies and the C-axis encoder assemblies are arranged for full-closed-loop control, so that high-precision and high-dynamic response is realized, and the double rotary tables are particularly suitable for manufacturing automobile parts on a large scale; and the aluminum alloy parts can be applied to machining of complex multi-angle aluminum alloy parts such as motor shells, speed reducer shells and shock absorption towers.

The invention discloses a hose quick connector testing device which comprises a U-shaped frame, a supporting frame, a pipeline rotating mechanism, a downward pressing pipeline mechanism, a left side pipeline clamping mechanism, a right side pipeline clamping mechanism, a left side compression and tensile testing mechanism and a right side compression and tensile testing mechanism. The U-shaped frame is arranged above the pipeline rotating mechanism, the pipeline pressing mechanisms are distributed on the U-shaped frame in a bilateral symmetry mode, and the left side compression and tensile testing mechanism, the left side pipeline clamping mechanism, the right side pipeline clamping mechanism and the right side compression and tensile testing mechanism are distributed in a bilateral symmetry mode with the U-shaped frame as the center. According to the invention, the downward pressing angle can be adjusted, so that the quick joint and the test pipeline bear pressure or bending from different angles, the comprehensiveness of a test result is ensured, the performance of the joint in a real use scene is conveniently and accurately evaluated, and the universality and flexibility of equipment are enhanced.

The invention discloses a new energy automobile battery tray welding anti-deformation auxiliary supporting device, and relates to the technical field of new energy automobile battery trays, the new energy automobile battery tray welding anti-deformation auxiliary supporting device comprises a reference frame, L-shaped clamping seats, self-adaptive limiting mechanisms, elastic pressing mechanisms and supporting legs, the four L-shaped clamping seats are fixedly connected to the four corners of the top end of the frame, and the two self-adaptive limiting mechanisms are in front-back symmetry; the two elastic pressing mechanisms are in bilateral symmetry, the self-adaptive limiting mechanism comprises three telescopic columns, column bodies are fixedly connected with guide limiting plates, belleville spring sets are arranged between the plates and the frame, buffer rubber cakes are installed on the outer sides of the plates, and the two ends of the plates are connected with reinforced L-shaped brackets through magnetic assemblies. The supporting legs are inserted into four corners of the frame to be locked and fixed; according to the device, all-directional constraint is achieved through cooperation of multiple mechanisms, welding thermal stress is offset in a self-adaptive mode, deformation and scratch are prevented, and the welding precision is improved.

The invention relates to the field of cranes, in particular to an automatic grabbing lifting appliance device for a crane, which comprises a lifting frame, a distance adjusting mechanism is fixedly connected to the bottom of the lifting frame, two telescopic frames in bilateral symmetry are mounted at two ends of the distance adjusting mechanism, lifting rods are mounted on the outer sides of the telescopic frames, and the telescopic frames adjust the distance between the lifting rods according to the length of a lifted pipe. Two vibrating mechanisms are mounted at the bottom of the lifting rod, the two vibrating mechanisms are symmetrically arranged left and right, inner supporting mechanisms are mounted on the inner sides of the vibrating mechanisms, the inner supporting mechanisms extend outwards to support and fix a pipe, the vibrating mechanisms can enable the pipe to vibrate while rotating, dirt on the inner wall of the pipe is vibrated off, and accurate grabbing of the pipes with different lengths is achieved; the adaptive range of the lifting appliance to pipes of various specifications is greatly widened, automatic grabbing of the pipes is achieved, manual auxiliary operation is reduced, the labor cost is saved, and the safety and efficiency of lifting operation are improved.

The invention discloses a low-noise motor rotor dynamic balance detection device, and particularly relates to the technical field of automobile part detection, the low-noise motor rotor dynamic balance detection device comprises a detection table and supporting plates arranged at the upper end of the detection table in a bilateral symmetry manner, and the inner surfaces of the two supporting plates are jointly provided with rotor fixing structures distributed in a bilateral symmetry manner; driving structures used for driving a motor rotor to rotate are arranged at the upper end of the detection table in a bilateral symmetry mode, and an eccentricity detection structure used for detecting the rotation eccentricity and the vibration frequency of the rotor is arranged in the middle of the upper end of the detection table. Rotor noise is effectively isolated through the shielding cover to ensure detection accuracy, automatic centering and stable clamping of the rotor are achieved through cooperation of the clamping assembly and the driving assembly of the rotor fixing structure, and accurate positioning and low-friction driving of the rotor are completed through cooperation of the positioning assembly and the locking assembly of the driving structure. Vibration and eccentricity data are acquired in a multi-dimensional manner by combining a contact wheel of an eccentricity detection structure and a sensor array, and high-precision comprehensive detection of dynamic balance of the rotor is finally realized.

The invention relates to the technical field of die casting machining and cooling, in particular to a cooling device for weaving machine accessory die casting equipment, which comprises an outer-layer mounting shell, the outer-layer mounting shell is composed of a lower base and an upper cooling shell, and two conveyor belt devices which are distributed in parallel left and right are mounted at the upper part in the base; a first cooling mechanism is arranged on the lower portion in the base, and a second cooling mechanism is arranged in the cooling shell. A reciprocating motion mechanism is arranged in the middle of the interior of the base, two movable shells are installed at the movable end of the reciprocating motion mechanism, a front supporting mechanism and a rear supporting mechanism are arranged above the conveying belt device, and each supporting mechanism comprises two supporting nets distributed in a bilateral symmetry mode. According to the invention, through the innovation of dynamic transmission, self-adaptive support and intelligent airflow, an efficient and uniform die casting cooling system is constructed; the problems of oxidation and uneven heat dissipation are solved through conveyor belt punching and nitrogen protection, the electric telescopic rods are dynamically positioned to adapt to special-shaped die castings, and thermal stress and cooling blind areas are eliminated through multi-fan intelligent control.

The utility model discloses a cutting and welding all-in-one machine which comprises a bottom plate, a line body arranged on the bottom plate and two trusses arranged on the upper side face of the bottom plate in a bilateral symmetry mode, the trusses are located on the left side and the right side of the line body, and a plurality of trays moving along the line body are arranged on the line body. A transferring assembly used for moving an iron core and a laser welding assembly used for welding the iron core are arranged on the upper side faces of the two trusses, a flat cutting assembly used for flat cutting of the iron core is arranged between the two trusses, and the flat cutting assembly is arranged on the upper side face of the bottom plate and located below the laser welding assembly. Two clamping and overturning assemblies used for driving the iron core to overturn are symmetrically arranged on the left side and the right side of the flat cutting assembly, workbenches located on the bottom plate are symmetrically arranged on the left side and the right side of the flat cutting assembly, rotating assemblies are arranged on the upper side faces of the workbenches, and a welding detection assembly is arranged on the side, away from the flat cutting assembly, of the wire body. The utility model has the advantage that the working efficiency is improved.

The utility model provides an aircraft structure ground static strength test-based actuating cylinder, which comprises an actuating cylinder body, a base and a limit adjusting mechanism, the base is fixedly provided with fixing plates which are arranged in a bilateral symmetry manner, a rotating shaft is fixed at the bottom of the actuating cylinder body and is rotatably connected between the two fixing plates, and the limit adjusting mechanism is fixedly connected with the actuating cylinder body. The limiting adjusting mechanism comprises an outer shell, a worm gear and a worm, the worm gear is connected with one end of the rotating shaft and arranged in the outer shell, the worm is in meshed connection with the worm gear and arranged in the outer shell, and the two ends of the worm extend out of the outer shell; by the adoption of the technical scheme, the worm is rotated to drive the worm gear to rotate, the worm gear drives the rotating shaft to rotate, the deflection angle of the actuator cylinder body is adjusted, then the load applying direction of the actuator cylinder is adjusted, in the connection mode of the worm gear and the worm, the worm can drive the worm gear to rotate, and the worm gear cannot drive the worm to rotate; therefore, the angle-adjusted actuator cylinder body is prevented from toppling under the action of gravity.

The invention discloses a stable projection curtain, and relates to the field of curtains, the stable projection curtain comprises a shell and a curtain main body, the curtain main body is located below the shell, an automatic winding mechanism is connected above the curtain main body, upward winding force is provided for the curtain main body, the curtain main body is stored in the shell, a base is fixed below the curtain main body, and the base is connected with the shell. The base is horizontally arranged, the upper portion of the base is connected with a supporting mechanism, the supporting mechanism is located on the rear side of the curtain body, and the supporting mechanism is distributed in a bilateral symmetry mode relative to the curtain body. According to the stable projection curtain, the two sets of supporting mechanisms are arranged to cooperate with the base to provide lower support for the curtain body, so that the curtain body can be kept in a vertical state and cannot shake, the curtain body can be automatically stored when the supporting mechanisms are stored subsequently, on one hand, the stability of the curtain body storage box when the curtain body storage box is released is kept, and on the other hand, the stability of the curtain body storage box is improved. And on the other hand, the curtain can be kept stable during use and cannot swing due to inertia of the vehicle.

The utility model relates to the technical field of full-vector drive-by-wire chassis, in particular to a full-vector drive-by-wire chassis steering device. Comprising a dual-redundancy full-vector drive-by-wire steering gear and a dual-wishbone independent suspension mechanism, the dual-redundancy full-vector drive-by-wire steering gear comprises a steering gear body, the steering gear body is provided with a gear mechanism, a turbine worm mechanism, a rack mechanism and a rack output shaft tube, and the gear mechanism and the turbine worm mechanism are arranged in a parallel structure. The turbine worm mechanism comprises a turbine and a worm, and the gear mechanisms on the two sides are correspondingly connected with steering motors respectively; the double-wishbone independent suspension mechanism is of a bilateral symmetry structure and comprises an upper wishbone, a lower wishbone, a full vector steering knuckle, a shock absorber, a suspension parameter adjusting device, a balance rod and a steering knuckle arm. According to the utility model, the independent steering of each wheel at a low speed can be ensured, and the stability, the safety and the reliability of the vehicle during high-speed driving can also be ensured.

The utility model discloses a mountain tobacco leaf automatic harvester support with adjustable spacing, which comprises a controller, two support frames and a top frame, the two support frames are respectively connected with the lower part of the top frame in bilateral symmetry, and the spacing of the two support frames is matched with the width of a ridge body; the top frame is in a frame shape and comprises two frames parallel to the length direction of the space defined by the two supporting frames, and a plurality of fixing holes distributed in the length direction of the frames at equal intervals are formed in the frames. The supporting frame comprises a transverse rod, two vertical rods and two steering wheels, the middles of the two vertical rods are fixedly connected with the two ends of the transverse rod respectively, the lower ends of the two vertical rods are connected with the steering wheels respectively, grooves matched with the frame are formed in the upper ends of the two vertical rods respectively, and two positioning holes matched with the fixing holes are formed in the grooves. The positioning holes are connected with the fixing holes through positioning bolts, and the steering wheels are electrically connected with the controller. The problem that various ridge distances cannot be used in the prior art is solved.

The invention relates to the technical field of building 3D printing equipment, in particular to a position-conveniently-adjusted printing head for building 3D printing equipment, which comprises a concave frame, a spherical seat is arranged at the lower end of the inner side of the concave frame, a part of the upper end of the spherical seat is horizontally cut off to form a plane, and the lower end of the spherical seat is upwards sunken to form a fan-shaped rotating groove; a fan-shaped rotating groove is formed in the lower end of the spherical seat, a rectangular groove is formed in the upper end of the fan-shaped rotating groove in a downward penetrating mode, circular shafts are fixedly connected to the side face of the spherical seat in a bilateral symmetry mode, and the circular shafts are rotationally connected with two side plates of the concave frame. A concrete material penetrates through an inner cavity of the communicating box and flows in along one end of the discharging channel, the concrete material penetrates through the discharging hole and then flows into the material guiding pipeline along the other end of the discharging channel, and the concrete material flows into the printing spray head body along the material guiding pipeline.

The utility model relates to a separation device, in particular to an ore magnetic separation device. The utility model provides an ore magnetic separation device. The ore magnetic separation device comprises a supporting bottom column, a conveying belt, a first fixing rod, a feeding box and a first motor. The four supporting bottom columns are in bilateral symmetry, a conveying belt is arranged between the left sides and the right sides of the upper portions of the four supporting bottom columns, the first fixing rods are symmetrically connected to the front side and the rear side of the conveying belt, a feeding box is fixedly connected between the left sides and the right sides of the tops of the two first fixing rods, and a first motor is fixedly connected to the front side of the feeding box. According to the magnetic separation device, non-magnetic and magnetic ores are effectively separated and respectively collected through the magnetic suction roller, the magnetic suction sheet and the material collecting box, so that automatic magnetic separation is realized, and the working efficiency and precision of ore treatment are greatly improved.

The utility model discloses a thickness-variable metal tabletting device which comprises a connecting plate, a supporting frame is arranged on the outer side of the connecting plate, a driving motor is fixedly installed on the outer side of the supporting frame, tabletting rollers are fixedly installed at the output end of the driving motor, and two groups of tabletting rollers are arranged in a bilateral symmetry mode relative to the midpoint of the connecting plate; the adjusting assembly is mounted on the outer side of the connecting plate; the lubricating assembly is installed at the upper end of the supporting frame. According to the thickness-variable metal tabletting device, when a gap between rollers needs to be adjusted, the output end of a servo motor drives a different-direction threaded rod to rotate by operating the servo motor, and the different-direction threaded rod rotates to drive threaded connectors at the two ends to move in the opposite direction or in the reverse direction; the two sets of threaded connectors move oppositely or reversely to drive the tabletting rollers at the two ends to move along with the two sets of threaded connectors, the gap between the tabletting rollers at the two ends is adjusted, and therefore the metal tabletting thickness is adjusted.

The utility model relates to the technical field of costume production, and discloses a serging device for knitted costumes, which comprises a rack, the limiting assembly comprises a connecting rod, bases, overturning bodies and a pressing roller, the connecting rod is movably arranged at the top of the rack, the two bases which are in bilateral symmetry are arranged at the bottom of the connecting rod, the bottom of each base is rotationally connected with one overturning body, and a spring is fixedly arranged on one side of each overturning body and used for pushing the overturning body to overturn and reset; the wall face of each overturning body is rotationally connected with one pressing roller, in the downward moving process of the connecting rod, the pressing rollers can abut against the conveying belt, the pressing rollers roll on the conveying belt under the reaction of the conveying belt through the two pressing rollers distributed in an eight-out mode, and in the process of pressing the cloth, the pressing rollers roll on the cloth, so that the cloth is pressed tightly. The cloth flattening device simulates the human hand to flatten the cloth to flatten the cloth, has the dual effects of flattening and fixing, and reduces the probability of forming redundancy and wrinkles between the pressed positions of the cloth.

The utility model belongs to the technical field of computer production testing, and particularly relates to a computer button durability testing device which comprises a vertical plate and a counting assembly, a base assembly is arranged at the bottom of the vertical plate, a fixing block is fixed in the middle of the rear outer wall of the bottom end of the vertical plate, and positioning knobs are in threaded connection with the rear outer wall of the bottom end of the vertical plate in a bilateral symmetry mode. A driving motor is fixedly installed on the outer wall of the middle of the rear portion of the vertical plate, an oval block is fixedly connected to the output end of the driving motor, a counting assembly is fixedly installed in front of the top of the vertical plate, guide rods are fixed to the outer wall of the front portion of the vertical plate in a bilateral symmetry mode, and movable plates are symmetrically arranged on the outer sides of the upper end and the lower end of each guide rod in a sliding mode; a spring is arranged on the outer side of the middle of the guide rod, and the two ends of the spring are fixedly connected with the two movable plates correspondingly. According to the utility model, the pressing column and the isolation plate are synchronously adjusted, so that the counting accuracy can be ensured, the condition of excessive reading or insufficient reading is avoided, and the reliability of a test result is higher.

The invention belongs to the field of aviation aircraft design, and discloses a short-distance vertical take-off and landing unmanned aerial vehicle with distributed duct rotor wing combinations and a control mode of the short-distance vertical take-off and landing unmanned aerial vehicle. The unmanned aerial vehicle adopts a wing body fusion layout, and an empennage adopts a T-tail layout; the wings on the two sides of the fuselage are sequentially divided into inner wings and outer wings from inside to outside; on-wing fusion design is adopted, distributed ducted power modules in bilateral symmetry are arranged on the rear portion of the upper surface of a wing, and each distributed ducted power module comprises parallel ducted fans with the same number; a rotor support rod is mounted between the inner wing and the outer wing and adopts an anti-symmetric rod type appearance, a pull-type rotor is mounted at the front end, and a push-type rotor is mounted at the rear end; steering engines are installed in inner cavities of the rotor wing supporting rods. The control modes comprise a cruise mode, a vertical take-off and landing mode and a short-distance take-off and landing mode. Short-distance take-off and landing and vertical take-off and landing can be achieved, the multi-target conflict problem that in the plateau environment, the take-off and landing site is limited, the loading performance is insufficient, and the wind resistance is weak is solved, and the method has the engineering practical value.

The utility model relates to the field of sheet metal processing, and discloses a bending device for sheet metal processing, which comprises a base, the top of the base is fixedly connected with a support frame, the inside of the support frame is fixedly connected with two hydraulic push rods which are distributed in bilateral symmetry, the bottoms of the two hydraulic push rods are both fixedly connected with a fixed frame, and the two hydraulic push rods are fixedly connected with the fixed frame. A rotating device is arranged in the fixing frame, the outer side of the rotating device is in transmission connection with a connecting plate through threads, a mounting plate is fixedly connected to the bottom of the connecting plate, a bending knife is fixedly connected to the interior of the mounting plate through a fastener, and a second sliding plate is slidably connected to the interior of the base; the top of the second sliding plate is fixedly connected with a fixing rod through a fastener, wherein the fixing rod penetrates through and extends to the outer side of the base. The bending device for sheet metal machining has the beneficial effects that the position of the bending knife or the position of the pressing die base can be relatively adjusted, and the adjusting mode is simple and rapid.

The utility model discloses an anti-loosening bolt with a locking structure. The anti-loosening bolt comprises a screw rod, the upper end of the screw rod is integrally connected with a connecting table playing a role in screwing, and the outer end of the screw rod is connected with a protective sleeve in a nested mode. A lubricating structure and a locking structure are arranged on the upper side and the lower side of the connecting table correspondingly, the lubricating structure comprises an oil storage cavity, a sealing plug, a connecting hole, a connecting cavity, a sponge column and an oil outlet hole, the locking structure comprises a threaded rod, a connecting strip, a limiting rod, a connecting lug and a connecting rod, and the oil storage cavity is formed in the connecting table; a sealing plug is arranged at the right upper end of the connecting table; and magnetic blocks are embedded and connected to the upper end of the protective sleeve in a bilateral symmetry mode, iron blocks are magnetically connected to the upper ends of the magnetic blocks, and the iron blocks are embedded and connected to the bottom end of the connecting table in a bilateral symmetry mode. According to the anti-loosening bolt with the locking structure, the locking structure is arranged, loosening is prevented, lubrication is facilitated, the bolt is prevented from being corroded, and meanwhile the screw rod is conveniently protected.

The utility model relates to the technical field of agricultural machinery, in particular to a soil covering mechanism for agricultural machinery, which comprises a box body and two discs distributed in bilateral symmetry, the bottom end of the inner wall of the box body is rotatably connected with two rotating shafts distributed in bilateral symmetry, and the upper ends of the two rotating shafts are fixedly connected with connecting discs; the outer walls of the two connecting discs are fixedly connected with outer gear rings which are meshed with each other, and two connecting blocks are arranged below the box body; when the right connecting disc rotates anticlockwise along with the right rotating shaft, the right connecting disc and the left connecting disc rotate clockwise and anticlockwise respectively, so that the angle between the two discs is reduced, soil is pushed to a seeding ditch or a planting row more intensively, and the soil covering amount per unit area is increased; the angle between the two discs can be increased, so that the soil covering amount in unit area is reduced, and the purposes of conveniently adjusting the angle between the two discs and controlling the soil covering amount according to actual conditions are further achieved.

The utility model belongs to the technical field of track plate laying and pouring, and discloses a ballastless track plate laying and pouring construction crane which comprises a pouring stock bin, a movable door frame, a traction mechanism and a hoisting and clamping mechanism. The traction mechanism comprises a traction main frame, a traction hydraulic cylinder, a steel cable limiting winding column and a steel cable, one end of the steel cable is wound at the telescopic end of the traction hydraulic cylinder, and the other end of the steel cable bypasses the corresponding steel cable limiting winding column and then is vertically downwards connected with corresponding lifting lugs at four corners of the lifting clamping mechanism; the lifting clamping mechanism comprises a lifting main frame, a clamping hydraulic cylinder located in the middle and extending longitudinally and horizontally, clamping connecting longitudinal rods arranged in a bilateral symmetry mode, and clamping seats which are in bilateral mirror symmetry and connected with the clamping connecting longitudinal rods on the corresponding sides, and the clamping connecting longitudinal rods are hinged to the two ends of the clamping hydraulic cylinder through V-shaped oil cylinder connecting frames; the utility model has the advantages of automatic control clamping and loosening, simple and fast operation, stable clamping, stable hoisting and the like.

The utility model discloses an impact block and rotor pressing device for electric hand drill production, which comprises a bearing, the two supporting columns are fixedly arranged at the top of the workbench in a bilateral symmetry mode, the transverse plate is fixedly arranged between the tops of the two supporting columns, and the four vertical rods are fixedly arranged at the top of the workbench in a front-back symmetry mode and located on the outer side of the transverse plate. The transverse plate is arranged on the top of the workbench, the sliding pushing assembly is arranged on the top of the workbench in a sliding mode and located on the lower side of the transverse plate, the placing plate is arranged on the sliding pushing assembly and located on the upper side of the transverse plate, the positioning inserting cylinder is fixedly arranged on the top of the transverse plate and located on the right side of the placing plate, and an impact block body can be placed on the placing plate. And a rotor body can be inserted into the positioning insertion hole.

The utility model discloses a synchronous storage type feeding mechanism which comprises a support, a transplanting air cylinder is fixed to the support, a movable table is fixed to the output end of the transplanting air cylinder, a jacking mechanism is fixed to the movable table, and the jacking mechanism comprises a first air cylinder, a fixed plate, a movable frame, a guide column and a boss. The first air cylinders are fixed to the movable table in a bilateral symmetry mode, a fixed plate is fixed to the output ends of the first air cylinders, and movable frames are fixed to the fixed plate at equal intervals. According to the synchronous material storage type feeding mechanism, the horizontal moving mechanism and the jacking mechanism are adopted, the automatic material transferring effect can be achieved, the materials can be stored in cooperation with the effect of the material storage frame, and therefore the problems that workers are prone to making mistakes and load bearing fatigue is effectively solved, the problems that a single person sees multiple lines in the manufacturing industry, and segmented material supplementing multiple-line synchronous production is achieved are solved, and the production efficiency is improved. And meanwhile, the trouble of multi-process merging and synchronous production of a flexible automatic line is overcome, and the production efficiency is improved.

The utility model discloses a pole piece rolling mill which comprises two bases which are oppositely arranged front and back, an upper roller, a lower roller, an upper roller driving mechanism and a lower roller driving mechanism, the upper roller and the lower roller are oppositely arranged up and down, and a gap is formed between the roller surface of the upper roller and the roller surface of the lower roller. The two ends of the upper roller are rotatably arranged on two upper supports respectively, the two upper supports are movably arranged in the two bases respectively, and the two ends of the lower roller are rotatably arranged on two lower supports respectively. The two lower supports are movably arranged in the two bases correspondingly and located below the two upper supports correspondingly. The device further comprises two upper supporting rollers arranged in a bilateral symmetry mode, two lower supporting rollers arranged in a bilateral symmetry mode, an upper gap adjusting driving mechanism and a lower gap adjusting driving mechanism. According to the utility model, the quality of the pole piece is improved, meanwhile, the device can be suitable for thinning dry-method diaphragms with different thicknesses and sizes, the application range is wide, and the use requirements are met.

The adjustable inertia connecting rod vibration isolation device comprises a vibration isolation base, a vibration isolation platform, a connecting rod mechanism and a spring element, the connecting rod mechanism comprises two sets of connecting rod assemblies which are in bilateral symmetry, each connecting rod assembly comprises an upper connecting rod and a lower connecting rod, and the upper connecting rods and the lower connecting rods are hinged through bearings; each connecting rod assembly is connected with the vibration isolation platform and the vibration isolation base through bearings. The spring element comprises a compression spring and an extension spring, and the compression spring is vertically arranged between the vibration isolation base and the vibration isolation platform; the extension spring is horizontally connected with bearing joints of the left and right symmetrical connecting rod assemblies; an upper connecting rod and a lower connecting rod of the connecting rod assembly extend outwards along a connecting point to form a lever arm, a plurality of mass block mounting holes are formed in the tail end of the lever arm, and mass blocks with different masses can be detachably mounted. A parallel stiffness structure is formed through the compression spring and the extension spring, the mass size and the mounting position of the mass block are adjusted on the lever arm, and ultralow-frequency quasi-zero stiffness band gap vibration isolation is cooperatively achieved.