19results about How to "Uniform load distribution" patented technology

The invention relates to a rolling bearing assembly (1), comprising a bearing ring (2) which is surrounded by a bearing block geometry (3), the bearing block geometry (3) being partially unloaded in the region having a higher radial component stiffness (4) and / or a higher local load introduction. According to the invention, at least one partial radial relief is formed in the bearing block geometry (3) in the region having a high radial component stiffness (4).

The invention discloses a high-stability static pressure guide rail device for heavy equipment, and relates to the technical field of precision mechanical guide rails, the bottom surface of a movable sliding table is fixedly connected with a pull-down constraint support, a plane static pressure oil cavity group is located on the bottom surface of the pull-down constraint support, and the bottom end of a plane oil supply channel extends into the plane static pressure oil cavity group; and the V-shaped sliding rails are fixedly connected to the two sides of the bottom face of the movable sliding table, the V-shaped static pressure oil cavity sets are located on the side faces of the bottoms of the V-shaped sliding rails, and the bottom ends of the V-shaped oil supply channels extend into the V-shaped static pressure oil cavity sets. The comprehensive bearing capacity of the guide rail is remarkably improved, the large-load requirement of heavy equipment is met, the central plane supporting area provides main vertical bearing capacity, the double-V-shaped guide rail provides multidirectional constraint and auxiliary bearing, and the lateral constraint structure provides static pressure support in the horizontal direction.

The utility model discloses a kind of beams of gantry milling, including beam, the beam has hollow cavity, the inner wall of the beam is fixedly connected with multiple annular reinforcing plates at equal intervals, the inner wall of the beam is fixedly connected with multiple reinforcing plates, each the reinforcing plate is fixedly connected with each annular reinforcing plate, the inner wall of the beam is fixedly connected with multiple reinforcing pieces, each the reinforcing piece is fixedly connected with annular reinforcing plate, the bottom of the beam is fixedly connected with two mounting blocks, the bottom of the beam is equipped with two vertical beams, assembly mechanism is equipped between the beam and vertical beam. The utility model is by being provided with equal interval annular reinforcing plate in the beam hollow inner wall, cooperate with the reinforcing plate fixedly connected with it, form support structure, effectively enhance the torsional stiffness and bending strength of beam;Reinforcing piece and annular reinforcing plate fixedly connected that the beam inner wall is provided with, can effectively disperse stress concentration, prolong equipment service life.

The utility model belongs to the technical field of cutter disassembly and assembly, and particularly relates to a cutter locking structure which comprises a cutter and a cutter handle, and a cam tensioning mechanism is arranged between the cutter and the cutter handle. The cam tensioning mechanism comprises a lock shaft and an eccentric wheel installed on the lock shaft, an axial tensioning piece is arranged between the cutter and the cutter handle, the axial tensioning piece is movably assembled in the cutter handle, one end of the axial tensioning piece is in threaded connection with the cutter, and a tensioning hole is formed in the axial tensioning piece; or a tensioning hole is formed in the short taper shank of the cutter; the axis of the tensioning hole coincides with the central axis of the cutter handle and is perpendicular to the axis of the lock shaft. The lock shaft can rotate relative to the cutter handle, penetrates into the cutter handle and is connected with the tensioning hole in an inserted mode so that the eccentric wheel can be located in the tensioning hole, the eccentric outer side of the eccentric wheel makes contact with the hole wall of the tensioning hole, and the eccentric wheel drives the cutter to move in the axial direction of the eccentric wheel under rotation of the lock shaft so as to tension the cutter. And a locking structure is arranged between the lock shaft and the knife handle. The tool can be prevented from loosening and rotating relative to the tool handle, machining precision is guaranteed, machining efficiency is improved, and machining cost is saved.

The application relates to the technical field of bridge construction, and particularly discloses a rotating system of a high and large rotating bridge, which comprises a lower bearing platform, a spherical hinge assembly, an upper rotating disc, a traction assembly and a slide way. The lower bearing platform is made of concrete pouring, the spherical hinge assembly is arranged between the lower bearing platform and the upper rotating disc, the upper rotating disc is poured on the spherical hinge assembly, the traction assembly is used for driving the upper rotating disc to rotate, the slide way is horizontally arranged on the lower bearing platform and is coincident with the center of the spherical hinge assembly, eight supporting legs are arranged below the upper rotating disc, the supporting legs are located above the slide way and have a gap between the slide way, a rotating platform is formed by the spherical hinge, the supporting legs and the part connected with the upper rotating disc, the rotating platform is cylindrical, the upper rotating disc is regular octagonal, the formwork is more convenient to configure and has high utilization on the basis of guaranteeing balanced stress, the lower bearing platform is hexagonal, local stress concentration can be reduced, load distribution is uniform, and the formwork cost and difficulty can be reduced, so that effective support is provided for the rotating system and the bridge.

The utility model provides a kind of bolt mounting structure and vehicle bogie, it is related to railway vehicle technical field, bolt mounting structure is applied to vehicle bogie, and vehicle bogie includes framework and drive system;Bolt mounting structure includes connecting flange, multiple mounting seat, mounting nut and bolt rod;Connecting flange is located between framework and drive system;Multiple mounting seat is located in the cavity of framework, and mounting nut is located on multiple mounting seat;Bolt rod is through the outer wall of framework, connecting flange and drive system, and one end is matched with mounting nut, and the other end extends to the mounting hole outside drive system shell. Through external bolt rod and built-in linkage type mounting seat cooperation, fastening operation is completed completely in external space. Realize the convenient installation and visual maintenance of bogie framework and drive system. Operating personnel can complete bolt fastening operation without entering cavity, significantly reduce installation difficulty and time cost.

This invention relates to the field of bridge construction technology, and particularly to a steel-concrete composite beam support and its preloading construction method. The steel-concrete composite beam support includes two rows of separate side supports, which are used to symmetrically support the bottom of the side boxes on both sides of the main steel beam. Multiple rows of steel pipe columns are arranged at intervals, and each row of steel pipe columns includes multiple steel pipe columns. Adjacent steel pipe columns are connected by diagonal bracing groove steel frames. A transverse distribution beam is fixed at the top of the multiple rows of steel pipe columns, and a Bailey beam is fixed on the transverse distribution beam. A track distribution beam is set on the top of the Bailey beam, and a sliding track is set on the track distribution beam. A transport trolley slides on the sliding track. The sliding track and transport trolley realize dynamic segmented preloading, ensuring that the settlement data accurately reflects the performance of the support. The modular structure facilitates rapid assembly and shortens the construction period. The symmetrical arrangement of the separate side supports avoids load concentration in the middle, reduces local stress concentration, and results in a more uniform load distribution, making it suitable for the construction of long-span bridges.

The utility model discloses a kind of composite material compression test fixtures of synchronous pressure application, including chassis and clamping block;Chassis includes bottom plate that can be installed on test table and the back plate and two side plates connected with bottom plate;Two pairs of clamping block are symmetrically arranged, and each pair of clamping block is symmetrically arranged;The upper and lower clamping block of one side is slidably installed on the same movable plate by first vertical guide structure, movable plate side portion is slidably installed on back plate by horizontal guide structure, movable plate is installed with clamping power component in the side away from clamping block, clamping power component is towards one side side plate, clamping power component is used to resist on side plate and promote the clamping of clamping block in the side;The upper and lower clamping block of the other side is slidably installed on the same fixed plate by second vertical guide structure, and fixed plate is installed on the other side plate;Clamping block is close to the end of effective test area and is equipped with extension and arc chamfer.This fixture can slow down the stress concentration of clamping block end in sample effective test area, and left and right clamping block load distribution is uniform.

The utility model relates to a pedal stool which is characterized in that the pedal stool comprises side plates on two sides and a pedal assembly arranged between the two side plates, the pedal assembly comprises more than one horizontally arranged bottom pedal and a top pedal, two sides of the bottom pedal are respectively and detachably connected with the side plates, and the top pedal is connected with the side plates. And the top pedal is rotationally arranged between the two side plates. By the adoption of the technical scheme, a modular combined framework is adopted, the height expandability is achieved through the multiple stages of detachable pedals, assembling is easy and convenient, and the modular production cost is low; due to the structure formed by the side plates and the pedal, loads are uniformly distributed, the stability is high, and the use safety of children is met; by rotating the top pedal, the top pedal can be used as a backrest, the bottom pedal can be used as a stool surface, children can conveniently use the chair as an arm chair, and the chair is high in functionality, easy to operate, convenient to convert and high in practicability.

The application relates to the technical field of unmanned aerial vehicle fluid spraying, and discloses a single-motor-driven fluid spraying device, which comprises a speed reduction motor, a long light shaft, a driving bevel gear and two short parallel light shafts.The single-motor-driven fluid spraying device can efficiently decompose single-axis rotating power into two routes of vertical rotating power through the cooperation between the components, and the two short light shafts automatically obtain opposite rotating directions.This transmission mode omits the complex worm gear or multi-stage gear reversing mechanism in the traditional scheme, greatly simplifies the transmission chain, effectively improves the power transmission efficiency, significantly reduces the overall volume and weight of the device, reduces the noise and vibration in the transmission process, and enables the device to better adapt to the compact and light mounting requirements of the unmanned aerial vehicle.

The present application belongs to the technical field of planetary gear transmission mechanism parts, and particularly relates to a planetary gear carrier, which comprises a front planetary carrier body and a rear planetary carrier body arranged in two parts, and a connecting column is arranged on the front planetary carrier body, the coaxial bidirectional transmission structure effectively increases the meshing length and the bearing area, the load is uniformly distributed, and the transmission stiffness and stability are significantly improved; the radial inner and outer double-side island-shaped reinforcing structure is adopted on the two sides of the groove in the circumferential direction, the stress concentration area is precisely reinforced, and the connection strength and the fatigue resistance of the brazing position are greatly improved; the through dynamic balance hole group realizes overall double-face dynamic balance, overcomes the technical prejudice in the industry that low speed does not need dynamic balance, and obviously reduces the vibration, noise and gear impact; the flow guide structure and the labyrinth type fitting structure improve the flow and filling effect of the brazing filler metal, and improve the uniformity and reliability of the weld; the heat dissipation gap improves the heat dissipation capacity, reduces the structural stress under high temperature working conditions, and prolongs the overall service life.

The utility model discloses a refractory green brick drying kiln car which comprises a car plate, rail wheels are installed on the lower surface of the car plate through fixing shafts, a fixing block is arranged on the lower surface of the car plate, a two-way lead screw is arranged on the side surface of the fixing block, and a handle is arranged on the surface of the two-way lead screw. The surface of the bidirectional lead screw is in threaded connection with a threaded sleeve, a guide block is arranged on the upper surface of the threaded sleeve, a guide groove used in cooperation with the guide block is formed in the lower surface of the trolley plate, and a connecting rod is hinged to the lower surface of the threaded sleeve. In the overhauling and replacing process, the handle is manually rotated to drive the two-way lead screw, under the action of the guide block and the guide groove, the threaded sleeve is promoted to move in the horizontal direction, under the action of the threaded sleeve, the connecting rod and the supporting plate, the vehicle plate is lifted, and enough overhauling space is reserved; workers can conveniently overhaul and replace quick-wear parts such as wheels and bearings, the overhaul and replacement time is shortened, and the practicability of the kiln car is greatly improved.

The utility model relates to a kind of semi-direct drive cutting unit driving system, it is related to engineering machinery technical field, it includes support and gear box part assembly.Gear box part assembly includes motor assembly and two gear box assemblies;Motor assembly has two output parts arranged in the extension direction of preset axis and can rotate around preset axis, and motor assembly is installed in support;Two gear box assemblies are connected with support and distributed in the extension direction of motor assembly on both sides of preset axis;The input end of two gear box assemblies is respectively connected with two output parts transmission, and the output end of two gear box assemblies is rotatably connected with support around preset axis or with the axis parallel with preset axis.It is simple in structure, small in size, light in weight, can improve power density high, improve transmission reliability, reduce failure rate.

The application provides a roller assembly and a dishwasher, and relates to the technical field of dishwashers. The roller assembly comprises an axle, a roller and balls. The balls are arranged between the roller and a mounting section of the axle to enable the roller to rotate relative to the mounting section. The balls enable the roller and the axle to form point contact and rolling friction therebetween, thereby reducing the movement resistance of the roller assembly and improving the smoothness of the movement of the compartment. Furthermore, the geometric center plane of each ball is symmetrically distributed about a second center symmetry plane, and the first center symmetry plane of the first fitting surface and the second center symmetry plane coincide, which enables the load of the roller assembly to be uniformly distributed, thereby improving the load bearing capacity of the roller assembly, preventing structural deformation of the roller assembly and prolonging the service life of the roller assembly.

The invention discloses a logistics delivery system and a delivery method, and belongs to the technical field of logistics. Parcels are shunted to double channels for parallel processing through the balance wheel device according to the cargo flow, and then parcel flow is integrated and centered through stack separation and module belt parallel flow centering; a module belt is adopted for friction guiding in the sorting link, the module belt sorting section device is controlled to deflect, so that the parcels steer smoothly and are sorted to each parcel supply opening, and the problems of collision and bounce in a traditional mode are avoided; abnormal parcels are guided into a manual inspection table through a sliding groove in the tail end, whether the parcels are reloaded or not is determined after manual judgment, and closed-loop processing is formed. According to the invention, shunting, separation, parallel flow, sorting and abnormity recovery are integrated, and highly compact, efficient and stable operation of the system is realized.

The utility model relates to the field of humanoid robots, discloses a high-thrust miniature planetary roller screw rod linear humanoid robot joint, is applied to a forearm linear joint in a humanoid robot arm, and aims to solve the problem that the precision and the stability are insufficient when an existing humanoid robot joint bears high thrust. The joint comprises a planetary roller lead screw mechanism, a driving motor and a shell, the planetary roller lead screw mechanism is composed of a center lead screw, a plurality of planetary rollers and an annular nut, high-precision linear motion is achieved through rolling of the planetary rollers, the driving motor is connected with the center lead screw through the nut and provides large thrust output, the shell is made of high-strength materials, and the shell is made of high-strength materials. Through the design of the planetary roller lead screw mechanism, the loading capacity and precision of the joint are remarkably improved, and the universal joint is suitable for the field of humanoid robots and has wide application prospects.

This invention discloses an adaptive balancing lifting device for aircraft door assembly and disassembly, belonging to the field of lifting device technology. It includes a lifting frame, lifting components, and a clamping assembly. The clamping assembly is equipped with a flexible component containing magnetofluid and a corresponding excitation component, which can adapt to the curved surface of the door and actively harden to provide reliable clamping. The lifting device also integrates a multi-degree-of-freedom angle adjustment component and a vision-feedback-based active balancing system. Before handling, the clamping angle can be adjusted to align the door using the longitudinal and lateral adjustment components. During handling, a vision camera detects the door's attitude in real time, and the control system drives independent lifting components on both sides for dynamic leveling. Micro-vibrations are absorbed by adjusting the magnetofluid state, achieving adaptive flexible gripping, precise attitude adjustment, and stable anti-sway handling of irregular doors, significantly improving the safety, accuracy, and efficiency of assembly and disassembly operations.

The application discloses a kind of eight corner and cylinder combined connection structure of impeller and pump shaft, including pump shaft and impeller installed on the pump shaft, the shaft section of the pump shaft and impeller cooperation is sequentially provided with first cylindrical centering section, octagonal torque transmission section and second cylindrical centering section from end face to inside;The wheel hub bore of the impeller is correspondingly provided with the first cylindrical hole section matched with the first cylindrical centering section, the octagonal hole matched with the octagonal torque transmission section and the second cylindrical hole section matched with the second cylindrical centering section, under the working condition of frequent start-stop, forward-reverse switching or load fluctuation, the impact wear and roll key phenomenon commonly seen in flat key connection will not be generated, fundamentally avoid the problem of connection loosening failure.The reliability of connection structure is significantly improved, and the requirements of continuous long-period operation can be met.

A vertical plate is fixed to the edge of the left side of the upper end face of a moving trolley, a push-pull rod which extends outwards and is of a U-shaped structure is fixed to the outer wall of the vertical plate, and a guide device which is perpendicularly and fixedly connected with the vertical plate to form a T-shaped structure is arranged in the middle of the upper end face of the moving trolley. A plurality of guide grooves vertically formed in the length direction of the guide device are evenly distributed in the front side wall and the rear side wall of the guide device, a plurality of sets of suspension type positioning and supporting assemblies matched with the guide grooves are fixed to the guide device in a height-adjustable mode, and each set of suspension type positioning and supporting assembly is used for conducting suspension supporting and positioning on a plurality of graphite sealing gaskets of the same type. The graphite sealing gasket guiding device reduces occupation of plane space of the moving trolley, remarkably improves space utilization rate, fully utilizes areas on two sides of the guiding device, is beneficial to uniform load distribution, meets requirements of batch transportation, improves transportation efficiency, can adjust positions according to specifications of graphite sealing gaskets, and reduces production cost. The problem that a traditional large moving device is inconvenient to move is effectively solved.