441results about How to "Prevent twisting" patented technology

The invention belongs to the technical field of underground water sampling equipment, and discloses an efficient underground water stratified sampling device which comprises a frame, the frame is provided with an operation table and a lifting device, the lifting device is connected with a plurality of groups of sampling devices in the height direction, each sampling device comprises a sampling barrel, and a plurality of water inlets are formed in the sampling barrels in the circumferential direction; the sampling barrel is rotationally connected with a plurality of rotating plates in the circumferential direction, the rotating plates are in one-to-one correspondence with the water inlets, and the rotating plates are fixedly connected with telescopic push-pull rods; a driving assembly is arranged at the top of the sampling barrel, is rotationally connected with the free end of the push-pull rod and is used for driving the push-pull rod to rotate in the direction close to or away from the sampling barrel; one side, close to the outer side wall of the sampling barrel, of the rotating plate is connected with a sealing element; the operation table is provided with a controller used for controlling the driving assembly to work. The problems that an existing water taking device is prone to causing cross mixing of water bodies at different depths, the sampling efficiency is low, and a water inlet is prone to being blocked are solved.

The invention discloses a transverse connecting device of a steel structure stand column, comprising: a stand column, the outer surface of which is provided with a mounting surface; the cross beam comprises a main body section and a butt joint section; one end, far away from the main body section, of the butt joint section is provided with a butt joint surface, and the butt joint surface is used for being in butt joint with the mounting surface and fixed through a bolt; a first butt joint disc is arranged at the end, opposite to the butt joint section, of the main body section, and a second butt joint disc is arranged at the end, opposite to the main body section, of the butt joint section. A connecting disc is arranged between the first butt joint disc and the second butt joint disc; the connecting disc is provided with a plurality of first connecting areas connected with the first butt joint disc, and the first connecting areas are arranged at intervals in the circumferential direction; the connecting disc is provided with a plurality of second connecting areas connected with the second butt joint disc, and the second connecting areas are arranged at intervals in the circumferential direction; and the second connecting areas and the first connecting areas are alternately arranged.

The invention belongs to the technical field of bridge construction, and particularly relates to a multi-strand steel strand tractor for a stay cable of a cable-stayed bridge and a traction control method. Comprising a winch; the number of the fixed pulleys I is two; the number of the fixed pulleys II is two; the two groups of cable guide pipes are suspended between the fixed pulley I and the fixed pulley II on the two sides; two ends of the traction steel wire rope respectively penetrate through the two groups of fixed pulleys I, the two groups of fixed pulleys II and the cable guide pipe to form a closed state; the two ends of one steel strand tractor are connected with the two ends of the traction steel wire rope respectively, the other steel strand tractor is installed on the traction steel wire rope, and when one steel strand tractor is fixed to the position, between the left side steel cable guide pipe and the left side cable guide pipe, of the traction steel wire rope, the steel strand tractor is fixed to the position, between the left side steel cable guide pipe and the right side cable guide pipe, of the traction steel wire rope. And the other steel strand tractor is fixed on the traction steel wire rope between the right side tower top fixed pulley and the right side cable guide pipe.

The invention provides a suspension type alternating current charging device and an automatic folding and unfolding method. The charging device comprises a charging gun; a power line extends from one end of the AC charging pile, and a charging line extends from the other end; the wire coil comprises a first half wire coil and a second half wire coil which are oppositely buckled into a whole, and a containing cavity is formed in the butt joint position of the two half wire coils; the alternating current charging pile is arranged in the accommodating cavity, and a power line guide groove and a charging line guide groove which are correspondingly communicated with the accommodating cavity are respectively formed in the butt joint part; the power line penetrates out along the power line guide groove to be wound on the first half wire coil, and the charging line penetrates out along the charging line guide groove to be wound on the second half wire coil to be connected with the charging gun. The electric winch is suspended on a ceiling or a cross beam and is used for driving the wire coil to lift through a traction rope so as to take up and pay off the charging wire in an anti-torsion manner; the radio sensor is used for sensing arrival or departure of a vehicle, and the radio sensor is in communication connection with the electric winch; the structure is simple and reliable, and automatic lifting based on vehicle parking can be achieved.

The invention discloses a prestressed concrete pipe pile connecting device, and relates to the technical field of pipe pile connecting structures, the prestressed concrete pipe pile connecting device comprises a lower pipe connecting pile, a sealing structure is arranged above the lower pipe connecting pile, an upper pipe connecting pile is arranged above the sealing structure, and mounting screws are arranged on the outer side of the sealing structure; a splicing base structure and a connecting base structure are arranged in the sealing structure, assembling structures are arranged on the sides, away from each other, of the splicing base structure and the connecting base structure, and a pressure applying connecting rod structure is arranged in the splicing base structure and the connecting base structure in a penetrating mode. The splicing base structure comprises a connecting inner barrel, a prismatic disc is fixedly connected to the outer surface of the connecting inner barrel, and an elastic rod fixing base is fixedly connected to the interior of the prismatic disc. Fixing and connection are achieved by means of deformation of an expansion strip of an expansion barrel extruded by a compression rod under the gravity of the upper pipe connecting pile, so that rapid positioning is achieved when the lower pipe connecting pile and the upper pipe connecting pile are connected; and butt joint installation is facilitated.

The invention discloses a connecting piece of a communication iron tower, and belongs to the field of connecting pieces, the connecting piece comprises a tower body, a maintenance platform is installed on the tower body, a plurality of annularly distributed mounting racks are installed on the maintenance platform, each mounting rack is connected with a communication antenna through a plurality of connecting piece main bodies, each connecting piece main body comprises an upper connecting plate, and a lower connecting plate is installed on the upper connecting plate. A rotating shell is fixedly installed on the lower surface of one end of the upper connecting plate, by arranging a locking piece and a matching sleeve piece, when a second rotating piece is driven to rotate, the second rotating piece can descend along a sliding sleeve at the same time, and then the second rotating piece can push the locking piece; when the locking piece is pushed, the locking piece can be matched with the matching sleeve piece to clamp the surface of the mounting frame so as to achieve fastening, when the communication antenna is blown by wind to swing back and forth, self-locking can be achieved, the faster the airflow changes, the larger the wind power is, connection can be firmer, the loosening probability is reduced, the overhaul frequency is reduced, and the workload of workers is reduced. The use is convenient.

The utility model provides a quick-connection fire-fighting pipeline, which relates to the technical field of fire-fighting pipelines and comprises a pipeline I and a pipeline II, and a fixed frame I is fixedly mounted on the outer wall of one end, close to the pipeline II, of the pipeline I. According to the device, by arranging structures such as discs, a first fixing frame on the outer wall of one end of a first pipeline and a second fixing frame on the outer wall of one end of a second pipeline are in butt joint, the discs are sequentially rotated after butt joint, threaded rods are driven by the discs to rotate in threaded holes, and the threaded rods can drive moving plates to slide in sliding grooves in the rotating process; a movable plate can drive a connecting plate and a limiting cylinder to move together in the sliding process, the limiting cylinder can be inserted into a limiting hole after the movable plate moves by a certain distance, and the first pipeline and the second pipeline can be rapidly connected and fixed through the structure; and therefore, the situation that when the first pipeline and the second pipeline are fixed, a tool needs to be used for screwing a plurality of fixing bolts is effectively avoided, and the installation efficiency between the first pipeline and the second pipeline is improved.

The present invention discloses a ventilator for building ventilation, which relates to the field of ventilation technology, a mounting plate, a circular hole is provided at the center of the mounting plate, a mounting tube is fixedly connected to the edge of the circular hole in the center of the mounting plate, a connecting hole is provided around the outer wall of the middle position of the mounting tube, a wind shield is fixedly connected to the middle position of the mounting tube, a plurality of air inlet flaps are fixedly connected to the top of the wind shield, the air inlet flaps are evenly arranged and installed at a certain angle, a fixing ring is fixedly connected to the top of the air inlet flap, the fixing ring can make the arrangement structure of the air inlet flap more stable, a rotating ring is slidably connected to the top of the mounting tube, a plurality of wind hemispheres are fixedly connected to the top of the rotating ring. The ventilator for building ventilation disclosed by the present invention has the technical effect that a natural ventilator can adjust the size of the inlet and outlet according to the size of the wind force in strong wind weather to prevent the natural ventilator from twisting and deforming.

The invention provides an engine braking device with a return function and an engine, and belongs to the technical field of automobile parts, and the engine braking device comprises a cam shaft, an auxiliary cam, a braking device and a braking device, a brake rocker arm and a rocker arm shaft, wherein a limiting part is arranged on the brake rocker arm; the movable unit comprises a sliding part and a rolling part; the rocker arm support is provided with a first connecting part; one end of the return spring bracket is connected to the first connecting part, and the other end of the return spring bracket is provided with a return spring seat; the elastic piece is transversely arranged and is clamped between the return spring seat and the limiting part; when the engine is braked and the rolling part is in contact with the non-working surface, the distance between the return spring seat and the limiting part is minimum; and when the engine brakes and the rolling part is in contact with the working surface, the distance between the return spring seat and the limiting part is maximum. According to the engine braking device, the elastic piece is transversely arranged, so that the overall size of the whole engine braking device in the vertical direction is integrally reduced.

The utility model discloses a stainless steel wire rope with better bending strength, which particularly relates to the field of steel wire ropes, and comprises an inner core, a plurality of reinforcing ribs are uniformly arranged on the outer side of the inner core, steel wire strips are wound on the reinforcing ribs, an outer sleeve is sleeved on the outer sides of the reinforcing ribs wound with the steel wire strips, and the outer sleeve comprises a buffer layer. The multiple reinforcing ribs are wrapped with the buffer layer, and the buffer layer is made of foam materials. The wear-resistant sleeve is connected to the outer portion of the buffer layer in a sleeving mode and is made of rubber materials, the steel wire strips are wound among the reinforcing ribs in a staggered mode, the steel wire strips are wound to form a spiral structure, the locking sleeves are pressed and fixed to the two ends of the outer sleeve, and the connectors are rotationally installed on the locking sleeves. The steel wire rope has the advantages that the protection capability of the steel wire rope can be improved, deformation caused by external extrusion is avoided, the internal strength of the steel wire rope is improved, the bending strength is improved, and the service life of the steel wire rope is prolonged.

The utility model discloses a deviation rectifying device for aluminum strip conveying, which relates to the technical field of aluminum strip processing and comprises a plurality of first transverse rollers with different heights, a plurality of second vertical rollers and a plurality of first vertical rollers which are sequentially arranged along the aluminum strip conveying direction. The first vertical rollers are installed on the two sides of an aluminum strip, and the horizontal distance between the first vertical rollers on the two sides is matched with the width of the aluminum strip. The second vertical rollers are installed on the two sides of the aluminum strip, first elastic pieces are arranged on the outer sides of the second vertical rollers, and the second vertical rollers are horizontally attached to the aluminum strip through the first elastic pieces. The first transverse roller supports aluminum strip conveying to serve as a deviation rectifying buffer area, the first elastic piece supports the second vertical roller to conduct elastic deviation rectifying on aluminum strip conveying, finally accurate limiting of aluminum strip conveying is achieved through the first vertical roller, and damage to the aluminum strip in the deviation rectifying process can be reduced.

The utility model discloses a connecting cable for battery energy storage, which comprises a fifth type conductor formed by twisting tinned copper wires, an insulating layer extruded outside the conductor, an elastic sheath layer extruded outside the insulating layer, and a plurality of ribs arranged at equal angles on the outer circumferential surface of the insulating layer by taking the center of the conductor as a circle center, the insulating layer and the sheath layer are arranged on the outer circumferential surface of the elastic sheath layer, so that the joint surface of the insulating layer and the sheath layer is gear-shaped on the radial cross section of the cable, the ribs are semicircular cross-section ribs, semicircular cross-section grooves are arranged between the adjacent semicircular cross-section ribs, and a plurality of protective ribs are arranged on the outer circumferential surface of the elastic sheath layer by taking the center of the conductor as the center of a circle at equal angles. The insulating layer and the sheath layer of the connecting cable for battery energy storage are firmly connected, the insulating layer and the sheath layer cannot be separated when the connecting cable is in a small-radius bending state for a long time, and the connecting cable has good bending performance and heat dissipation performance and can meet the use requirement of serving as a direct current side connecting cable in a battery energy storage system.

The utility model provides an impact-resistant high-air-tightness servo motor shaft, and relates to the technical field of motor rotating shafts, the impact-resistant high-air-tightness servo motor shaft comprises a servo motor body, the servo motor body comprises a servo motor body and a rotating shaft assembly, the rotating shaft assembly is inserted in the output end of the servo motor body, and one end of the rotating shaft assembly far away from the servo motor body is sleeved with a sealing assembly. According to the utility model, under the action of the sealing assembly, the mounting seat and the mounting point are wrapped and protected, the sealing sleeve is made of stainless steel, so that the joint of the rotating shaft assembly and the mounting point can be effectively prevented from being collided and damaged, and further, the limiting sleeve can move towards the sealing rubber sleeve by rotating the limiting sleeve; and after the extrusion sleeve is in contact with the sealing rubber sleeve, the limiting sleeve continues to be rotated until the sealing rubber sleeve is extruded to be in an outward turning state, and at the moment, under the action of the rubber material of the sealing rubber sleeve, the air tightness between the rotating shaft assembly and the mounting point is further improved.

The utility model relates to the field of fire hose hangers, and discloses a fire hose hanger which comprises a storage roller, a supporting mechanism is arranged at the lower end of the storage roller and used for supporting an upper end structure, the supporting mechanism comprises a supporting frame, the upper end of the supporting frame is fixedly connected with a lantern ring, and the lantern ring is arranged on the supporting frame. The front side and the rear side of the lower end of the supporting mechanism are fixedly connected with anti-skid supporting legs, and the lower ends of the anti-skid supporting legs are fixedly connected with anti-skid rubber strips. An upper positioning rod and a lower positioning rod are fixedly connected to the inner side of one end of the supporting frame. According to the fire hose winding device, the fire hose is prevented from being twisted or folded when being laid or wound through the limiting effect of the upper positioning rod and the lower positioning rod, meanwhile, the fire hose is pressed and clamped through the pressing idler wheel, so that the fire hose is more compact when being wound, and the occupied space is reduced; the fire hose is wound in a hand-cranking mode, the storage efficiency of the fire hose is improved, and the fire hose winding device is practical and suitable for being widely popularized and used.

The present specification relates to a method for generating a lattice unit structure for 3D printing by which a lattice structure printed by the method can have a good damping effect and a good supporting capability, that is, when a user wears the sole to move, the lattice units of the sole can maintain the overall shape of the sole, and the entire shape of the sole can be maintained. Therefore, the structure is prevented from twisting and the sole is prevented from deforming.

The invention belongs to the technical field of groundwater sampling equipment, and discloses an efficient groundwater stratified sampling device, comprising a frame, wherein the frame is provided with an operating table and a lifting device, wherein the lifting device is connected with a plurality of sampling devices along a height direction, wherein the sampling device comprises a sampling barrel, wherein the sampling barrel is provided with a plurality of water inlets along a circumferential direction, wherein the sampling barrel is rotatably connected with a plurality of rotating plates along a circumferential direction, wherein the rotating plates correspond to the water inlets one by one, and wherein the rotating plates are fastened with a retractable push-pull rod; wherein a driving assembly is provided at the top of the sampling barrel, wherein the driving assembly is rotatably connected with the free end of the push-pull rod, and wherein the driving assembly is used for driving the push-pull rod to rotate toward or away from the sampling barrel; wherein a sealing member is connected with a side of the rotating plate close to an outer wall of the sampling barrel; wherein a controller for controlling the operation of the driving assembly is provided at the operating table; wherein the invention solves the problems that the existing water taking device is prone to cause cross-mixing of water bodies at different depths, has low sampling efficiency, and is prone to blockage of water inlets.

The utility model discloses a beam hanger of an oil pumping unit, and relates to the technical field of oil pumping units, in particular to the beam hanger of the oil pumping unit, which is mounted on a polish rod of the oil pumping unit, is used for suspending a steel wire rope of the oil pumping unit and comprises a metal body, the upper portion of the metal body is in threaded connection with a polish rod slip, and the polish rod slip is fixedly mounted at the lower end of the polish rod. Rotating heads are rotationally arranged at the two end parts of the metal body; through the arrangement of the rotating head and the metal body, when the oil pumping unit continuously works, the steel wire rope is repeatedly stretched to generate torsion, the steel wire rope is twisted, the steel wire rope is twisted to drive the rotating head located at the upper end of the steel wire rope to rotate, the rotating head rotates on the metal body through the bearing to release the torsion, and the purpose of preventing the steel wire rope from being twisted is achieved. Meanwhile, the steel wire rope can be fixed to a metal body through the rotating head.

The utility model relates to bed connecting structure field discloses a connecting structure and bed, can install fast and stably hang piece, and the connecting place hides in the stand, is more beautiful. The utility model discloses a stand, including the first bending surface, the first bending surface is provided with first bending part and second bending part, and the first bending part is with second bending part in longitudinal and transverse all staggered settings, and first bending part and second bending part all are equipped with the positioning hole, the hang piece, including the second bending surface, the second bending surface is provided with third bending part and fourth bending part, and third bending part and fourth bending part have interval in longitudinal and transverse, and third bending part and fourth bending part all are equipped with the buckle, after the stand of hang piece is connected, the first bending surface can cooperate with the second bending surface, and the buckle can be hung and buckled on the corresponding positioning hole.

The present invention provides a flexible communication cable, which belongs to the field of cable technology, and includes a cable body and a cable auxiliary body detachably connected to the cable body, wherein two or more cable auxiliary bodies are detachably connected side by side; the cable auxiliary body includes a reinforcing body arranged along the axial direction of the cable body and being bendable, and the reinforcing body is provided with a plurality of connectors for connecting and fixing the cable body. In the flexible communication cable, the cable auxiliary body increases the rigidity of the cable body from the outside without affecting the bending flexibility of the cable body, and constrains and controls its bending radius, and at the same time, the cable bodies are arranged and connected together in rows, which effectively avoids the situation that multiple flexible communication cables are twisted and entangled with each other during frequent bending, and effectively improves the reliability of the use of the flexible communication cable as a whole, and is easy to disassemble and assemble, and has high convenience and flexibility in use.

The invention belongs to the technical field of optical fibers, and particularly discloses an optical fiber connector and an inner core assembly thereof, the inner core assembly comprises an insertion core component, a supporting body and an elastic element, the insertion core component is used for penetrating through an optical cable, and the insertion core component is movably connected with the supporting body in a limiting mode so that the insertion core component can move relative to the supporting body in the axial direction and / or the circumferential direction; one end of the elastic element abuts against the insertion core component, and the other end of the elastic element abuts against the supporting body. According to the optical fiber connector, the insertion core component is movably connected with the supporting body in a limiting mode, the insertion core component can be prevented from excessively rotating to twist off an optical fiber, it can be guaranteed that the insertion core component is in a floating state during working, even if the tail of a jumper wire is stressed, stress deformation of the tail of the optical fiber connector is not transmitted to the insertion core component, and the service life of the optical fiber connector is prolonged. Therefore, the butt joint state of the insertion core optical fiber is not interfered, high-precision insertion loss control is always ensured, and low-loss insertion loss control is always ensured while better tensile property is obtained.

The utility model relates to the field of fuel rod forming, and discloses a material receiving mechanism for RDF fuel rod forming, which comprises a shell, a rotating disc and a material pressing disc, the rotating disc and the material pressing disc are rotatably connected to the shell, the material pressing disc is provided with a discharging port, a cutting piece is slidably connected to the material pressing disc and located at the discharging port, a spring is arranged between the cutting piece and the material pressing disc, and a connecting rod is hinged to the shell. A material receiving disc is arranged at the end, close to the discharging port, of the connecting rod, and a pressing block is arranged at the end, away from the discharging port, of the connecting rod; the utility model has the following advantages and effects: the RDF fuel rod downwards presses the end part, close to the discharge port, of the connecting rod through the material receiving disc, the connecting rod vibrates when colliding with the stop block, and the fuel rod slides to the turntable along the inclined surface of the material receiving disc under vibration; the connecting rods are consistent in length, the pressing blocks are consistent in quality, the pressing blocks are always vertically downward, and the borne gravity is kept unchanged, so that the upward swinging time of the ends, close to the discharging opening, of the connecting rods is consistent, and the lengths of the fuel rods are consistent.

The present invention belongs to the technical field of mechanical connection, and relates to a new type of hanging connector for detecting the pulling force of a control rod assembly, including a locking rod and a locking claw; one end of the locking rod is provided with a first conical surface; the other end is provided with an external thread; the locking claw is sleeved on the locking rod; one end of the locking claw is provided with a plurality of circumferentially distributed elastic claws, and the elastic claw is arranged in the inner hole of the control rod assembly; the inner side of the elastic claw contacts the first conical surface; the locking rod is also provided with a locking nut, the locking nut cooperates with the external thread, and the locking nut is arranged on one side of the locking claw; the locking rod is driven to move in the locking claw by rotating the locking nut, and the elastic claw is driven to open or contract through the first conical surface, so that the elastic claw contacts or separates from the inner hole wall of the control arm assembly. The connector in the present invention adopts a self-centering conical elastic self-locking to avoid the swing and torsion of the control rod assembly, and the overall structure is exquisite and simple, low cost, safe and reliable.

The utility model relates to the technical field of air leg rock drills, in particular to an air leg rock drill which comprises a rock drill body and a pneumatic supporting leg, the end face, away from a drill bit, of the rock drill body is fixedly connected with a first handle, and the surface of the pneumatic supporting leg is fixedly connected with a second handle. The annular connecting block is fixedly connected to the lower end face of the rock drill body. The rock drill body and the pneumatic supporting legs are connected through the transverse connecting rod, so that the first handle and the second handle are placed in a staggered mode, and then a user can directly face a rock wall to be excavated and hold the first handle and the second handle on the left side and the right side to work; therefore, a user can be prevented from twisting the body or greatly bending the shoulder face rock wall, the human engineering design is met, and the fatigue feeling of the user is reduced.

The utility model relates to the technical field of insulator hardware, disclose a kind of anti-twist web hardware for the connection of insulator, including the insulator main body for electrical insulation, the upper hardware assembly for being used to the fixed installation of insulator main body is set on the upper end, the cable fixing assembly for being used to the fixed clamping of cable is set in the upper hardware assembly, when insulator is subjected to torsional force, anti-migration tooth is engaged with insulator, limit axial displacement and disperse torsional force, positioning ring cooperates preliminary limit, when insulator is twisted, connecting ring rotates synchronously, recess and protruding block generate relative displacement, when torsional force is small, protruding block is formed mechanical locking by being clamped into recess, directly prevent twisting, when torsional force is large, protruding block slides along recess bevel, consume energy and attenuate torsional amplitude, positioning ring and anti-migration tooth continue to limit axial displacement simultaneously, by mechanical limit and engagement locking, prevent insulator from excessive torsion due to wind load, conductor swing etc., avoid insulation performance decline.

The utility model relates to a film tearing device for coil film tearing. The film tearing device comprises a horizontally arranged mounting plate and a first driving mechanism for driving the mounting plate to lift, the lower surface of the mounting plate is provided with a magnetic attraction position and a vacuum attraction position for attracting the coil to the mounting plate in a vacuum mode, and the upper side of the mounting plate is further provided with a magnet for attracting the coil to the magnetic attraction position; the film tearing device for coil film tearing further comprises an air cylinder for adjusting the distance between the magnet and the mounting plate in the vertical direction. According to the film tearing device used for coil film tearing, the suction cup is arranged to attract the coil, the magnet is further arranged to attract and fix the coil, displacement and falling of the coil during film tearing are effectively prevented, and the working efficiency of coil assembly is guaranteed.

The utility model relates to a bicycle rear speed change lifting lug which comprises a body made of titanium alloy, a barrel shaft rod positioning hole and a lifting lug fixing hole are formed in the top of the side face of the body, a rear chain changer fixing hole is formed in the bottom of the side face of the body, and the middle of the body is of a hollow structure. The rear speed change lifting lug of the bicycle is made of titanium alloy materials, has better rigidity in fierce use by optimizing a stress structure, and prevents gear skipping; when the chain encounters extreme tension, the tail hook can still keep the original position so as to prevent a transmission guide plate from twisting or deviating due to excessive tension of the chain, interference between the transmission guide plate and a driving side spoke is avoided, and hidden dangers are completely eradicated.

The utility model discloses an I-shaped steel reinforcing assembly which comprises transverse I-shaped steel fixedly installed on the left side and the right side of I-shaped steel, a round sleeve is installed on the front side of the I-shaped steel, a square sleeve is installed on the surface of the round sleeve, and a plurality of bolts are arranged on the surface of the I-shaped steel in a penetrating mode. The round sleeve and the square sleeve are fixedly connected with the I-shaped steel through bolts, a connecting frame is fixedly connected to the surface of the square sleeve, an upper top plate is arranged at the top of the connecting frame and fixedly connected with the I-shaped steel, and a lower bottom plate is arranged at the bottom of the connecting frame and fixedly connected with the I-shaped steel. The round sleeve, the square sleeve and the connecting frame are used in cooperation, the periphery of a hole formed in the I-shaped steel is reinforced, then the supporting plate, the supporting frame and the triangular supporting plate are used in cooperation, the triangular supporting plate can support the lower bottom plate, and finally the round sleeve is stably installed on the periphery of the hole formed in the I-shaped steel.

The invention relates to the technical field of integrated circuit component packaging, in particular to a dip welding type copper strip winding type welding column preparation device and method. Comprising a lead wire traction mechanism for leading out a lead wire, a copper strip winding mechanism for winding a copper strip on the lead wire, a segmented placement mechanism for cutting the copper strip wrapped lead wire, a gantry clamping mechanism for grabbing and rotating the copper strip wrapped lead wire, a dip welding mechanism for soldering the tin copper strip wrapped lead wire and a welding column cutting and collecting mechanism for cutting and collecting a welding column, the copper strip winding mechanism comprises a driving motor, a hollow rotating platform is arranged at the output end of the driving motor, a rotating wall plate is arranged on the hollow rotating platform, a copper strip damper for placing a copper strip is arranged at one end of the rotating wall plate, and a guide roller is arranged on the rotating wall plate; the dip welding mechanism comprises a scaling powder heating table, a tin pot heating table and a tin scraping mechanism which are arranged in sequence. The device is simplified, the automation degree is high, the size is small, and batch preparation of the enhanced welding columns can be achieved.

The invention provides a pneumatic suspension system for simulating a zero-gravity environment and a control method. The pneumatic suspension system comprises a supporting assembly, a suspension assembly and a control system. The supporting assembly comprises a box, a top plate and a spindle, the top plate is arranged in the box, vertical guide rails are arranged on two sides of the box, the spindle penetrates through the top plate and the box bottom, and the top is used for hanging a tested object. The suspension assembly comprises a beam, a cylinder barrel, an air floatation piston, a piston rod and an air source, the beam slides along the guide rail, an airflow channel is arranged in the beam and connected with the air floatation bearing, the air floatation piston is arranged in the cylinder barrel, the cylinder barrel is divided into an upper cavity and a lower cavity, the upper cavity is communicated with the atmosphere, the air source supplies air to the lower cavity, and the two ends of the piston rod are connected with the air floatation piston and the beam respectively. And the control system controls the gas transmission work of the gas source. According to the pneumatic suspension system, friction of the system is effectively reduced, dynamic self-adaptive balance is achieved through the control system, and therefore the more accurate and stable suspension effect is provided.

This utility model relates to the field of chassis technology, providing a steering system and chassis. The steering system includes: a wheelset assembly, a steering assembly, and multiple shock absorber assemblies. The steering assembly includes a rotating platform and a steering motor, with the steering motor mounted on the top surface of the rotating platform. Multiple shock absorber assemblies are spaced apart along the forward direction of the wheelset assembly. Each shock absorber assembly includes a shock absorber and a radial fixing member. The top of the shock absorber is vertically connected to the rotating platform, and the bottom of the shock absorber is connected to the wheelset assembly. The radial fixing member is located on the bottom surface of the rotating platform and on the outer periphery of the shock absorber. This utility model can prevent the shock absorber from twisting, keeping the wheelbase and track width of the wheelset assembly constant, thereby preventing lateral movement. The shock absorber assemblies not only provide shock absorption but also act as a single-sided support with the steering assembly, further preventing lateral slippage of the wheelset assembly and ensuring its operation according to a set kinematic model, resulting in high safety.