370results about How to "Avoid stress concentration" patented technology

The invention discloses a geogrid and EICP synergistically reinforced soil embankment structure and a construction method, and relates to the technical field of soil embankment structures. Comprising a pavement base layer, an embankment bearing layer and a natural soil foundation layer, and the natural soil foundation layer is used as a soil embankment structure support and is arranged at the bottommost layer; the pavement base layer is used for bearing an upper driving load and uniformly transferring the upper driving load to the embankment bearing layer below; and the embankment bearing layer is used for bearing the upper load transmitted by the pavement base layer. The engineering performance is improved through the multi-layer synergistic effect, the core reinforcing layer is of an innovative space grid structure and is composed of a prefabricated geogrid, a grid support arranged in the inclined direction and a rigid stress plate frame, a three-dimensional force transmission network is formed, the limitation of a traditional reinforcing method is broken through, and the engineering performance is improved. In addition, the grating support is arranged at a specific angle, the structural rigidity is guaranteed, and the stress concentration phenomenon is avoided.

The utility model discloses a kind of foundation structure and wind turbine generator set of wind turbine generator set, it is related to wind power generation technical field, wherein, foundation structure includes first bearing platform, second bearing platform, multiple bored piles and multiple anchor rods, the top surface of first bearing platform is connected with the connecting cylinder for connecting the tower cylinder of wind turbine generator set;Second bearing platform is set below first bearing platform, the top surface of second bearing platform projects the bottom surface of first bearing platform and forms step surface, the vertical projection of the bottom surface of first bearing platform in second bearing platform forms core area, the edge of second bearing platform forms the expansion area surrounded in core area;Multiple bored piles are distributed in core area with interval, each bored pile extends downward from the bottom surface of second bearing platform, and bored pile is vertically arranged;Multiple anchor rods are distributed in expansion area with interval, and anchor rod extends downward from the bottom surface of second bearing platform and is arranged with inclination.The foundation structure has good bearing capacity and stability, can guarantee the safety and stability of wind turbine generator set in long-term operation process.

The application discloses a kind of carbon ceramic brake pad for grinding carbon ceramic brake disc, belong to brake pad technical field, solve the poor heat dissipation performance of existing ceramic brake pad, insufficient connection strength, leading to the problem of poor friction performance, it includes carbon ceramic lining plate and the carbon ceramic friction surface installed on carbon ceramic lining plate, multiple mortise grooves are set on the upper surface of carbon ceramic lining plate, multiple tenon heads matched with mortise groove are set on the lower surface of carbon ceramic friction surface, tenon head is embedded into mortise groove and forms mortise and tenon structure, connects carbon ceramic lining plate and carbon ceramic friction surface, ear plate is set on the circumference of carbon ceramic lining plate, and mounting hole is formed in ear plate;In the application, the friction coefficient is adjusted by designing ceramic phase composition and density of carbon ceramic friction surface and carbon ceramic lining plate, and carbon ceramic lining plate and carbon ceramic friction surface are connected by RMI process and mortise and tenon structure to improve the mechanical properties of connecting place, ensure braking safety, reduce thermal stress generated in braking process, so as to improve the friction performance, effectively guarantee braking effect, and prolong service life.

The utility model discloses a quick cooling device for tempered glass processing, which comprises a cooling box arranged between two conveying components, openings matched with the two conveying components are arranged on two sides of the cooling box, cooling components are arranged on the upper portion and the lower portion of an inner cavity of the cooling box, and each cooling component comprises an air guide pipe. The front sides and the rear sides of the air guide pipes are fixedly connected with the front side and the rear side of an inner cavity of the cooling box through connecting blocks, and the opposite faces of the two air guide pipes are communicated with a plurality of air conveying pipes. According to the rapid cooling device for tempered glass processing, through the cooling assemblies arranged on the upper portion and the lower portion of the inner cavity of the cooling box, high-pressure cold air can be sprayed to the surface of glass from the upper direction and the lower direction at the same time, it is guaranteed that the surface of the glass is evenly cooled, the glass can be rapidly cooled within a short time, and the technological requirement for rapid cooling is met; the cooling efficiency of the tempered glass is improved, and the stress concentration phenomenon is effectively avoided.

This application discloses a prefabricated installation structure for metal ducts, belonging to the technical field of pipe connection structures. It provides a prefabricated installation structure for ducts with better connection flatness, including a bridging component connecting adjacent ducts. The bridging component includes an inner frame and an outer frame. A narrowing frame is provided between the outer wall of the inner frame and the inner wall of the outer frame. Embedded grooves are formed between the two end faces of the narrowing frame and the outer walls of the inner and outer frames. A pressing component is fixedly connected to a pair of opposing outer sides of the outer frame. The duct has an outwardly extending side plate on the side perpendicular to the pressing component. A snap-fit ​​component is fixedly connected to the outer frame on the side perpendicular to the pressing component. This invention, by providing a pressing component structure on opposing sides and applying pre-pressure, can better keep adjacent ducts in the same extension direction. Combined with the bridging component embedded in the duct end structure, the connection ends of the duct units can be kept flush, effectively reducing the light transmission probability at the connection point and effectively improving airtightness.

The invention relates to a wing connection device for connecting an outer wing to a central wing and comprising a triple joint comprising a first joint, a second joint and a third joint, wherein the first joint is fixed to a central wing rear spar of the central wing, the second joint is fixed to an outer wing rear spar of the outer wing and the third joint is fixed to a docking rib web of the outer wing, and a rear strut plate fixed to a rear spar frame of the central wing. In this way, by fixing the rear strut plate to the rear spar frame of the central wing, the load from the outer wing can be spread, so that the stress level is reduced, the structural efficiency is improved and the deformation of the connection structure is reduced. For example, the rear strut plate spreads the upward load and spreads the load to the fuselage frame and via the fuselage frame to the fuselage. The invention also relates to an aircraft comprising such a wing connection device and to a method of connecting wings.

The application provides a circuit breaker, relates to the technical field of switches, and can reduce the production cost of the circuit breaker and is easy to assemble. The circuit breaker comprises a shell, an indicating piece, a movable contact, a driving shaft and an elastic piece, and the shell is provided with a viewing window. The indicating piece is provided with an acting end and an indicating end, and the indicating end is provided with an opening indication mark and a closing indication mark. When the indicating piece is in a first position, the opening indication mark corresponds to the viewing window. When the indicating piece is in a second position, the closing indication mark corresponds to the viewing window. When the movable contact is in a contact position, the indicating piece is in the second position. When the movable contact is in a disengagement position, the indicating piece is in the first position. The driving shaft drives the movable contact to switch between the contact position and the disengagement position. The driving part of the driving shaft is in abutment with the acting end, and the indicating piece is switched from the first position to the second position. The two ends of the elastic piece are elastically applied to the shell and the indicating piece respectively, and are used for applying an action force close to the driving part to the acting end.

The invention discloses a jaw crusher rack, and belongs to the technical field of jaw crusher racks, the jaw crusher rack mainly comprises a base plate, a left side plate, a rear plate, a right side plate and a front plate, the left side plate and the right side plate are symmetrically arranged above the base plate, and the rear plate and the front plate are clamped to the two ends of the left side plate and the two ends of the right side plate respectively to form a closed rack main body; second tenons are fixedly connected to the connecting position of the left side plate and the front plate and the connecting position of the right side plate and the front plate, and second mortises are formed in the connecting positions of the front plate and the second tenons. The machine frame has the beneficial effects that vibration transmission is weakened, part abrasion and scrap iron generation are reduced, the iron impurity mixing risk is reduced, the ore sand product purity is guaranteed, the overall strength and connection stability of the machine frame are improved, stress concentration is avoided, local part replacement can be achieved through modular design, and the production cost is reduced. The whole rack does not need to be replaced, so that the maintenance cost and shutdown loss are greatly reduced.

This utility model provides a clamp for horizontal tensioning of geomembranes in a laboratory, and the device relates to the field of hydraulic engineering technology. The clamp includes an upper clamping plate, a lower clamping plate, and a sliding groove; the upper clamping plate includes an upper plate and a protrusion; the upper surface of the lower clamping plate has a groove, and rollers are fixed to the lower surface, with several pressure devices fixed to the edge; the sliding groove provides a sliding track for the rollers on the lower surface of the lower clamping plate. This utility model can effectively solve problems such as unstable clamping of smooth geomembranes, stress concentration due to clamping effect, and the influence of clamp gravity effect on the horizontal tensile force data of the geomembrane.

The utility model relates to a stationary shaft shoulder stirring head which comprises a shaft shoulder and a stirring head coaxially butted with the tail end of the shaft shoulder, the stirring head is of a circular truncated cone structure, the flaring end of the stirring head is coaxially butted with the tail end of the shaft shoulder, and a threaded groove is formed in the annular wall in the axial direction of the stirring head; the stirring head of the circular truncated cone structure is adopted, the design of the axial thread grooves in the annular wall can play a spiral flow guide role on softened metal materials, the problem of material overflow caused by a traditional plane shaft shoulder is effectively avoided, the welding seam filling rate and the joint compactness are remarkably improved, and defects are reduced. Through the synergistic effect of the circular truncated cone structure and the threaded groove, stress is dispersed through the continuous and smooth geometrical shape, the problem of stress concentration caused by multi-groove spaced arrangement of involute grooves in the prior art is solved, meanwhile, the design that the flaring end of the stirring head is embedded into the shaft shoulder ring groove enhances the connection stability, vibration abrasion under high-speed rotation is reduced, and the stirring effect is improved. Durability of the stirring head is remarkably improved, and use cost is reduced.

The utility model provides a kind of automatic screening device of parts, including screening device, and screening device includes upper layer cavity, and the bottom surface of upper layer cavity is inclined to be inclined surface, for making pipe fitting under gravity downward roll. The lowest place of upper layer cavity is equipped with discharge chute. The downside of upper layer cavity is equipped with screening chamber, and screening chamber is equipped with length screening groove, and length screening groove is equipped in screening chamber far from one end of discharge chute. The bottom surface of screening chamber is inclined to be inclined surface from discharge chute to length screening groove. The downside of screening chamber is equipped with collection groove, and collection groove is used to collect unqualified pipe fitting. The end far from discharge chute of screening chamber is equipped with qualified product taking area, and qualified product taking area is extended and is equipped in length screening groove downstream for the bottom surface of screening chamber. Qualified product taking area is equipped with horizontal platform of fence. The utility model realizes length screening to pipe fitting by mechanical structure using pipe fitting gravity, saves manpower cost, reduces equipment cost and energy consumption.

This invention relates to the field of vortex wet dust removal technology, specifically an explosion-proof and scale-resistant vortex wet dust collector, comprising a dust collector assembly, a guide plate rotatably connected to the inner side of the dust collector assembly, a back plate synchronously rotatably connected to the guide plate, self-locking transmission parts at both ends of the guide plate, a buoyancy plate connected to the other end of the self-locking transmission parts, and a water guide component at the bottom of the guide plate; the self-locking transmission part includes a driven part fixedly connected to both ends of the guide plate, an active part engaging one side of the driven part, the buoyancy plate driving the active part to rotate according to water level changes, the active part and the driven part cooperating to rotate the guide plate, and the water level change caused by negative pressure causing the guide plate to contact the airflow at different angles and wind speeds through the active part and the driven part, and the self-locking capability of the active part and the driven part allows for unidirectional power transmission, restricting the guide plate from rotating due to force on the leeward side.

The invention provides a low-water-absorption glass bead modified PBT (polybutylene terephthalate) material and a preparation method thereof. The low-water-absorption glass bead modified PBT material comprises the following components in parts by weight: 70-100 parts of PBT resin; 0 to 30 parts of solid glass beads; 0-5 parts of a toughening agent; 0-2 parts of an antioxidant; 0-2 parts of a lubricant; 0-2 parts of black color master batch; 0-2 parts of a coupling agent; 0-5 parts of polytetrafluoroethylene wax; wherein the average particle size of the solid glass beads is 1-50 [mu] m; the average particle size of the polytetrafluoroethylene wax is 3-15 [mu] m, and the weight-average molecular weight of the polytetrafluoroethylene wax is 10000-30000 g / mol; the weight ratio of the solid glass beads to the polytetrafluoroethylene wax is (5-10): 1. According to the invention, the polytetrafluoroethylene wax is added into the solid glass bead modified PBT material, so that the shrinkage difference between the material flow direction and the vertical flow direction is effectively reduced, the water absorption rate of the material is remarkably reduced, the preparation process is simple, and the production process is easy to control.

The utility model belongs to the field of metal structure engineering, and particularly relates to a high-strength and impact-resistant aluminum material structure which comprises a main body frame and a deformable supporting assembly, the main body frame is a long-strip-shaped aluminum strip with the length larger than or equal to 5 meters, and a double-layer gradient reinforcing rib assembly is arranged on the surface of the long-strip-shaped aluminum strip. A reinforcing seat in a deformable supporting assembly is matched with a first mounting groove in the side face of a long-strip-shaped aluminum strip, after matching of the reinforcing seat is completed, a limiting bolt penetrates through a limiting hole so that the reinforcing seat and the long-strip-shaped aluminum strip can be locked and matched, and after locking matching is completed, a mounting cushion block is mounted in a second mounting groove; a positioning bolt penetrates through a positioning hole to lock and match an installation cushion block and a long-strip-shaped aluminum strip, a connecting rod in a deformable supporting assembly rotates around a hinged joint to deform, an elastic energy absorption element absorbs impact kinetic energy and converts the impact kinetic energy into elastic potential energy, meanwhile, longitudinal reinforcing ribs on the surface of the connecting rod restrain buckling deformation, and multi-stage energy dissipation is achieved.

The utility model relates to the technical field of automobile parts, disclose a kind of automobile anti-dazzle rearview mirror structure with notched electrode sheet.The utility model is composed of first base and second base by first base conductive layer and second base conductive layer respectively, electrochromic layer is between the two, sealing glue seals it, first notched electrode sheet is electrically connected with first base conductive layer by conductive paste, conductive paste ensures that first notched electrode sheet is connected with first base conductive layer and second base conductive layer, laser etching line disconnects the electrical connection of first notched electrode sheet and second base conductive layer, second notched electrode sheet is electrically connected with second base conductive layer by conductive paste, insulation layer makes second notched electrode sheet and first base conductive layer disconnect electrically connected, disperse stress through notch, avoid stress concentration, and the area of notch allows conductive paste to fill and form mechanical anchoring enhanced bonding force, ensure the stability of anti-dazzle function.

This application relates to a battery device and an electrical device, and pertains to the field of battery technology. The battery device is installed in the electrical device and supplies power to it. The battery device includes a battery cell pack and a housing. The battery cell pack includes multiple battery cells stacked along a first direction. The housing includes a receiving cavity for accommodating the battery cell pack, and a beam extending along a second direction perpendicular to the first direction is disposed within the receiving cavity. The beam abuts against the battery cell pack along the first direction. The housing includes a mounting portion located at at least one end of the beam along the second direction and connected to the beam. The housing includes a frame layer and a skin layer, the skin layer covering the frame layer. The frame layer includes a beam frame forming the beam and a mounting portion frame forming the mounting portion, the beam frame being connected to the mounting portion frame. This battery device can meet its own lightweight design requirements while ensuring the housing has good structural strength and deformation resistance.

The invention relates to the technical field of building construction, in particular to a safe plate hoisting auxiliary structure for curtain wall construction, which comprises an auxiliary frame, a first hoisting point is arranged at the top end of the auxiliary frame, and a hoisting base is arranged on the outer side of the auxiliary frame. The hoisting base is provided with a negative pressure adsorption mechanism used for grabbing the curtain wall and provided with a second hoisting point. And the auxiliary frame is matched with the stable guide wheel mechanism on the hoisting base through the guide fixing mechanism to form track constraint. The structure further integrates a distance adjusting assembly, a damping assembly and a synchronous movement assembly, and double-side synchronous adjustment is achieved through a linkage disc or a gear and a rack. In addition, the curtain wall protection device is further provided with an anti-falling assembly and a curtain wall protection mechanism with a protection annular plate, and a protection sliding frame is driven by a protection driving assembly to move centripetally. Through frame guiding, mechanical synchronous linkage and multi-stage safety protection, the problems that high-altitude curtain wall hoisting swing is large, and safety is poor are solved, and the efficiency and safety of curtain wall construction are remarkably improved.

The utility model discloses a near ceramic sample concrete drain pipe relates to drain pipe technical field, and this near ceramic sample concrete drain pipe, including pipe body, pipe body is the composite structure of carbon fiber silk, porous ceramic aggregate, ceramic powder filling piece and concrete filling piece, and pipe body surface is equipped with nanometer ceramic coating, and pipe body includes intermediate straight pipe, and socket and spigot of setting in the both ends of intermediate straight pipe and the annular connecting rib of setting in the outer wall of intermediate straight pipe, and socket end portion is equipped with outward extending dentate boss along the length direction, and the butt joint surface of socket inner wall is equipped with sealing washer, and the connecting rib end portion is equipped with dentate recess. The utility model sets up the pipe body of composite structure, and the carbon fiber silk that increases restrains crack propagation, and the pipe body is connected stably between, and the sealing effect is good, and the pipe body corrosion resistance improves, and the integral drain pipeline system that the pipe body body of subsection butt joint installation constitutes can be locally replaced, prolongs the overall life, and reduces maintenance cost.

The utility model relates to medical instrument technical field, concretely is a kind of superhard guide wire, including mandrel, Tip head, first spring, second spring, first coating, second coating;The distal end of mandrel is provided with transition section and shaping section;Tip head is connected in the end of shaping section;First spring is sleeved on shaping section;Second spring is sleeved outside first spring, and one end extends to transition section, and second spring is provided with multiple connecting areas;The one coating is coated in second spring and the distal end of mandrel;Second coating is coated in Tip head and first coating outside, and extends to the distal end of mandrel.This embodiment's superhard guide wire, multiple connecting areas are provided on second spring, and the flexibility of multiple connecting areas can improve second spring, so that it can have better anti-unraveling capacity, to avoid stress concentration on first coating and second coating when mandrel is used, reduce the risk that coating is pulled apart and falls off, improve the controllability and safety of guide wire in surgical process.

The application provides a manufacturing method of a hydraulic support overall bending type side guard, and specifically comprises the following steps: providing a special steel plate for a side guard; performing primary cutting on the special steel plate for the side guard according to a drawing to obtain two side guard to-be-bent pieces which are spliced together, wherein different cutting parameters are adopted for cutting a bending section and cutting an outer shape contour; respectively performing bending on the side guard to-be-bent pieces along different bending lines to obtain a bent piece, wherein a bending down process of the bent piece is divided into three stages, and each stage corresponds to different bending parameters; cutting the bent piece into two parts; and respectively welding a guide rod seat and a rib plate on each part. The method can avoid cracking of the hydraulic support side guard and improve processing efficiency.

The utility model discloses a hollow arch board for building construction, including board main body, and board main body is integrally extruded by light material, the board main body is as a whole arch structure, and is equipped with arch toe on both sides, the board main body is hollow structure, and is equipped with a plurality of webs inside, and the web divides the board main body inside into multiple continuous rectangular, triangle or trapezoidal hollow cavities, the utility model discloses integrally extruded by light material such as PVC or aluminum alloy, has reduced the dead weight of board significantly, and the board is as a whole arch structure, and then combines the web set up inside, has formed the stable mechanical structure, can effectively disperse pressure, has avoided the problem that the bending stiffness of flat plate structure is low and can not satisfy the bearing demand.

This utility model discloses a guide structure for preventing door deviation and a disinfection cabinet using the same, relating to the field of mechanical equipment technology. It includes a door frame and a door body rotatably connected to the door frame. The door body has guide protrusions arranged along the rotation path of the door body. During the rotation and closing of the door body, the guide protrusions abut against the side of the door frame, guiding the rotation of the door body and preventing it from deviating in the left-right direction. It also includes a cabinet body and a cabinet door rotatably connected to the cabinet body. The cabinet door has the door body structure, and the cabinet body has the door frame structure. Through the innovative design and reasonable arrangement of the guide protrusions, the existing door deviation problem is effectively solved, demonstrating significant practicality and innovation. It can bring a better user experience and performance improvement to various devices with door body structures and related application scenarios.

The utility model discloses a detachable buckle lifting packaging box connecting mechanism, and relates to the technical field of packaging box connecting mechanisms, the detachable buckle lifting packaging box connecting mechanism comprises a base, and an arch bridge rod is arranged on the base; the knuckle is fixedly arranged on the upper wall of the base; a sleeve hole is formed in the upper wall of the end part of the lifting belt in a penetrating manner; the base is designed to be of a triangular structure. According to the detachable buckle lifting packaging box connecting mechanism, the knuckle and the arch bridge are combined into a whole, and the structure and the principle of a traditional waistband are used for reference, so that the assembling process of the packaging box becomes extremely simple and convenient. And the original two-time assembly step can be completed only through one-time operation, so that the packaging efficiency is greatly improved, the packaging time is shortened, and the quick packaging device is particularly suitable for the quick packaging requirement in large-scale production.

The large buzzing sheet comprises a metal substrate and a piezoelectric ceramic sheet arranged on the front surface of the metal substrate, the left side and the right side of the metal substrate are respectively provided with a side wing plate, the back surface of each side wing plate is fixedly connected with a back plate, and one side, far away from each side wing plate, of each back plate extends to the back surface of the metal substrate. The front of the side wing plate is fixedly connected with a front plate, the side, away from the side wing plate, of the front plate extends to the front of the piezoelectric ceramic piece, the top of the side wing plate is provided with a connecting plate, the front and back of the connecting plate are in swing connection with swing rods, and the sides, away from the connecting plate, of the swing rods extend to the outer side of the side wing plate and are fixedly connected with the side wing plate. Through the wrapping design of the left and right side wing plates, the back plate and the front plate, the piezoelectric ceramic piece is completely wrapped in the metal frame, a plane fixing mode of single glue bonding is replaced, the frame structure disperses shear force generated by vibration to the whole side wing plate system, stress is prevented from being concentrated on a glue bonding surface, and the service life is prolonged.

The utility model provides a kind of vibration platform structure of spherical graphite vibration grinding machine, belong to graphite vibration grinding machine technical field, the vibration platform structure of this spherical graphite vibration grinding machine, it include: vibration platform body, vibration excitation device, elastic support component, grinding vessel, transmission connecting mechanism and damping control device, vibration platform body is rectangular plate, and upper surface central fixed spherical grinding vessel;Excitation motor is fixed in the center of bottom surface, output shaft is coaxial with eccentric wheel component, and main, vice eccentric wheel is divided on the upper and lower ends of rotating shaft;Each elastic support unit is arranged in four corners, including support seat and helical compression spring, support seat bolt is fixed bottom surface, and spring lower end is connected ground surface;Vibration is transmitted to grinding vessel by platform by transmission connecting mechanism;The utility model can solve the technical problems that vibration transmission efficiency is low, grinding uniformity is poor and equipment stability is insufficient in the vibration platform structure of spherical graphite vibration grinding equipment in the prior art.

The utility model discloses an edge pressing device for mechanical part production and processing belongs to mechanical part processing field, including base, install the edge pressing equipment of base top and work table of installing on base, the inside fixed chamber of base is equipped with the sleeve that rotates and is connected in fixed chamber inside, and the top of sleeve is connected with work table bottom, the inside fixed chamber is provided with drive mechanism, is used for driving sleeve to drive work table to make 90 degree reciprocating rotation to realize work piece edge pressing position's switching, through the cooperation of above each device, through setting up drive mechanism drive work table can make 90 degree reciprocating rotation to realize work piece edge pressing position's switching, cooperate linkage mechanism simultaneously, make work table after rotating, and the clamp plate can be automatic centering and clamping work piece, through setting step -by -step rotation edge pressing process, effectively avoided the stress concentration problem that whole edge pressing led to, and the product quality was greatly promoted.

The invention discloses a preparation method of a magnesium alloy plate with a gradient twin structure, and belongs to the technical field of heterostructure material preparation. According to the method, firstly, a magnesium alloy plate serves as a base plate, magnesium alloy wires of the same mark are adopted for double-heat-source auxiliary heating stirring friction solid-phase additive manufacturing, and a deposition plate with crystal grains preferentially oriented in the thickness direction is obtained by regulating and controlling the heating temperature and deposition head process parameters; keeping the heating state of the substrate, performing heat source-assisted ultrasonic rolling on the deposited plate, and enabling crystal grains in the thickness direction of the plate to generate twinning deformation of different degrees by regulating and controlling rolling parameters; and finally, separating the substrate from the deposition plate to obtain the magnesium alloy plate with the gradient twin structure. Heterogeneous particles are not introduced, the material is pure, the technological process is short, the production efficiency is high, the cost is low, the prepared plate is small in grain, the gradient twin crystal structure penetrates through the thickness, the comprehensive performance is excellent, and the method is suitable for industrial production and can be applied to the fields of automobiles, aerospace, medical instruments and the like.

The suspension double lug connecting structure positioning device comprises a driving assembly and a positioning assembly connected with the driving assembly, the double lug connecting structure comprises a double lug female end and a double lug male end, the positioning assembly comprises a positioning seat, the positioning seat is arranged on both sides of the double lug female end, guide blocks are arranged on the positioning seat, the guide blocks are located on both sides of the double lug male end, the positioning assembly and the guide blocks can facilitate assembly and positioning of the double lug female end and the double lug male end, the positioning seat can be flexibly adjusted according to the size of the double lug connecting structure and the assembly tolerance, the accurate alignment between the double lug female end and the double lug male end is effectively ensured, unnecessary stress concentration is avoided, and the problem that the performance of the suspension and the stability of the vehicle are affected by assembly errors is effectively avoided.

The invention discloses a rear suspension system and a vehicle, and the rear suspension system comprises a rear suspension body which comprises a rear axle, lower trailing arms and a V-shaped thrust rod, the lower trailing arms are arranged at the two ends of the rear axle, and the V-shaped vertex of the V-shaped thrust rod is connected to the middle of the rear axle; the mounting structure comprises a first cross beam and a first longitudinal beam, first connecting pieces are arranged on the top walls of the two ends of the first cross beam, and second connecting pieces are arranged on the side walls of the two ends of the first cross beam; one end of the lower trailing arm away from the rear axle is connected to the first connector; the two ends of the V-shaped thrust rod are connected to the corresponding second connecting pieces respectively. By arranging the mounting structure composed of the first cross beam and the first longitudinal beams at the two ends, the lower longitudinal arm is connected with the first connecting piece, the two ends of the V-shaped thrust rod are connected with the second connecting piece, and therefore vertical impact, lateral force, torque and alternating load borne by the rear suspension body in the running process can be reasonably dispersed; stress concentration of the connecting part is avoided, and the problems of metal plate deformation, weld joint cracking, suspension loosening and the like are solved.