20results about How to "Reduce lateral displacement" patented technology

The invention relates to the technical field of vehicles, and particularly discloses a combined type air suspension system and a vehicle, the combined type air suspension system comprises a vehicle frame, a plate spring assembly, a connecting shaft, a longitudinal thrust assembly and a gas elastic piece, the plate spring assembly comprises a plate spring body, a front support and a rear support, and the plate spring body is provided with a front spring eye; the front spring eye is rotatably arranged on the front support, a plurality of connecting positions are arranged on the front support, and the plate spring body is provided with a rear spring eye which is rotatably arranged on the rear support. The connecting shaft is arranged on the plate spring body, the longitudinal thrust assembly comprises a longitudinal thrust rod and a base, the base is arranged at the connecting position of the plate spring body and the connecting shaft, one end of the longitudinal thrust rod is rotationally connected with the base, and the other end of the longitudinal thrust rod can be selectively rotationally connected with or separated from any connecting position. The gas elastic piece is arranged between the base and the frame, so that the motion trail of the connecting shaft can be finely adjusted, the guiding characteristic is improved, and the transverse vibration of the whole system is reduced.

This application provides a fixture and method for clamping and machining thin-walled welded parts, relating to the field of fixture and tooling technology. The fixture includes a base mechanism, a central positioning mechanism, an angular positioning structure, an auxiliary support mechanism, and a clamping mechanism. The base mechanism uses a disc and multiple circumferentially arranged elongated plates to form a support surface; the central positioning mechanism mates with the positioning inner hole of the part to achieve central positioning; the angular positioning structure mates with the angular hole of the part to achieve angular positioning; the auxiliary support mechanism is set for each lug to be machined, using V-shaped supports and lateral limiting components to provide auxiliary support and limit the lugs to be machined; the clamping mechanism clamps the part to the clamping reference surface. This solution can improve the clamping stability, positioning accuracy, and local rigidity during machining of thin-walled welded parts, reduce vibration and lateral displacement of the lugs to be machined, and reduce the risk of cracking at the weld joint.

The invention discloses an environment-friendly range hood based on a dynamic smoke dust separation technology, and belongs to the technical field of oil smoke separation. Comprising a shell, a motor, an impeller, a smoke exhaust mechanism, a dust removal mechanism, a sensor and a controller, the impeller is rotationally installed in the shell and driven by the motor, the smoke exhaust mechanism comprises a filter screen and a connecting assembly, the filter screen and the impeller are coaxially and rotationally installed through the connecting assembly, and the filter screen is a diamond mesh oil filter screen formed by interweaving multiple sets of curves; the dust removal mechanism comprises a brush and an opening and closing mechanism, the opening and closing mechanism is arranged on the shell and used for adjusting the working angle of the brush, and the sensor is used for detecting the smoke concentration around the range hood. The smoke and dust separation of the smoke exhaust ventilator is realized, dust in the smoke is effectively separated, the exhausted gas is purified, the pollution to outdoor air is reduced, the accumulation speed of the smoke and dust on the filter screen is reduced through the arrangement of the brush, and the cleaning and maintenance cost of the smoke exhaust ventilator is further reduced.

The invention belongs to the technical field of seismic resistance and rail restraint of urban rail traffic engineering, and relates to a transverse steel rail restraint device which comprises two sets of steel rail fasteners and two sets of limiting assemblies, each limiting assembly comprises a mounting base, an abutting protrusion, thermal bimetal, a disc-shaped force transmission piece, an elastic piece and a limiting rod, and the elastic piece is arranged on the outer side of the limiting rod in a sleeving mode. A mounting groove is formed in one end of the mounting base, the elastic piece, the disc-shaped force transmission piece, the thermal bimetal and the abutting protrusion are sequentially arranged in the mounting groove, the elastic piece abuts against the bottom wall of the mounting groove, and one end of the limiting rod is connected with the bottom wall of the mounting groove. The thermal bimetal comprises a first metal layer and a second metal layer which are sequentially arranged, and the thermal expansion coefficient of the first metal layer is larger than that of the second metal layer. The abutting protrusion is arranged on the side, away from the second metal layer, of the first metal layer and used for abutting against the side face of the steel rail. The transverse restraining device for the steel rail can prevent double failures that transverse displacement of the steel rail exceeds the standard and longitudinal stress exceeds the limit.

This utility model belongs to the field of photovoltaic (PV) brackets, and discloses a column structure and a PV bracket. The column structure includes a column body and a reinforcing member. The reinforcing member is disposed on at least one side of the column body and extends along the height direction of the column body. At least a portion of the cross-section perpendicular to the height direction of the column body is a closed cross-section. This utility model, by providing a closed-section reinforcing member on at least one side of the column body, improves the overall bending, torsional, shear, and tensile strength compared to open-section or flat components. It also increases the contact area with the soil, further enhancing its tensile and bending strength. Furthermore, by improving the overall performance of the column body through the reinforcing member, there is no need to increase the cross-section of the column body, saving materials.

The invention discloses a constant-pressure overflow device for pile sinking of a bamboo joint pile and a pile sinking method of the bamboo joint pile, the constant-pressure overflow device comprises a water bag assembly and a constant-pressure overflow valve, the water bag assembly comprises a soil bag and a framework pipe, and water is injected into the soil bag for providing support pressure for a pre-drilled hole; a counter weight lever type assembly of the constant-pressure overflow valve comprises a lever arm connected to a fulcrum shaft pin, the inner side of the lever arm is connected with a valve rod, the bottom end of the valve rod is connected with a blade valve element, when the constant-pressure overflow valve does not work, the blade valve element seals a water inlet, and when the constant-pressure overflow valve works, water flow in the water inlet can eject the blade valve element to flow out through a water outlet. A second balancing weight is arranged on the outer side of the lever arm, and the second balancing weight can hinder water flow in the water inlet through the lever effect. The supporting pressure in the water bag assembly can be ensured to be constant, and the problems that the geotechnical bag is burst and the pre-drilled hole collapses are avoided; due to the design of a large-diameter pipeline, pipeline blockage is avoided; and through cement-based grout replacement, the water bag assembly is converted into a geotextile bag concrete pile, and the foundation is permanently reinforced.

The invention provides an improved structure of a pressing type waterway switching device, which comprises a water distribution main body provided with a water inlet passage, a water distribution assembly and water outlet holes, a waterway switching chamber is arranged in the water distribution assembly, and water flows into the waterway switching chamber from the water inlet passage and is communicated with any water outlet hole; the water path switching valve element is arranged in the water path switching cavity, an ejector rod moves upwards and axially to influence the water flow direction of the water path switching cavity, and the water inlet channel is at least communicated with one water outlet hole; the pivoting top plate comprises a frame, a pivoting shaft and a middle elastic guide strip; one end of the middle elastic guide bar, which is far away from the pivoting shaft frame, is upwards provided with a groove, and the other end is provided with a bent end on the same side with the pivoting shaft; the groove abuts against the lower end of the movable piece, the groove relatively enables the lower end of the movable piece to have a transverse redundant space, the bent end abuts against the water distribution body, the pivot joint top plate is stressed to rotate upwards to enable the lower end of the movable piece to have arc-shaped displacement, upward axial displacement is guaranteed, and water path switching and conduction are achieved.

The invention provides a shared vibration isolator for a floating slab ballast bed. The shared vibration isolator comprises an upper support, a lower support, a spring assembly, a sealing device and a leveling base plate. The upper support is a square frame with a bottom, and a limiting block and a positioning block are arranged on the upper surface of the upper support; the limiting block and the positioning block are arranged in the centers of the two ends of the upper support respectively, the lower support is arranged below the upper support, the lower support is a square frame with a bottom, the size of the lower support is the same as that of the upper support, the lower support and the upper support are fixed through bolts, a cavity is formed between the upper support and the lower support, and a gap exists between the upper support and a frame of the lower support. A plurality of spring assemblies capable of reducing vibration are arranged in the cavity; the sealing device rings are arranged on the outer surfaces of the upper support and the lower support; and the leveling base plate is arranged on the upper surface of the upper support and between the limiting block and the positioning block.

The invention discloses a static and dynamic load control system and method for a ground-anchored space cable three-tower suspension bridge. The system comprises a ground-anchored space cable three-tower suspension bridge and a static and dynamic load control unit arranged on the ground-anchored space cable three-tower suspension bridge; the ground-anchored space cable three-tower suspension bridge comprises a main beam, a middle tower, side towers, transition piers, anchorages arranged on the main beam, and a spatial linear main cable arranged on the anchorage and the main beam; the static and dynamic load control unit comprises a shock-absorbing and energy-absorbing longitudinal limiting support arranged between the middle tower and a transverse connecting box on the main beam along the longitudinal bridge direction, a shock-absorbing and energy-absorbing wind-resistant support respectively arranged between the middle tower and the side tower and a steel box beam on the main beam along the transverse bridge direction, and a vertical support arranged at the junction of the transition pier and the steel box beam on the main beam; the flutter and wind-resistant stability of the whole bridge is improved by the spatial linear main cable; the longitudinal energy absorption capacity of the bridge is improved by the shock-absorbing and energy-absorbing longitudinal limiting support; and the transverse shock-absorbing capacity of the bridge is improved by the shock-absorbing and energy-absorbing wind-resistant support.

The utility model belongs to the technical field of deep foundation pits, and particularly relates to a drainage system suitable for a cohesive soil indwelling soil platform. The cohesive soil indwelling soil platform is divided into two layers and comprises an upper platform surface, a middle platform surface, a lower platform surface, an upper slope surface connecting the upper platform surface and the middle platform surface, and a lower slope surface connecting the middle platform surface and the lower platform surface; the support piles are arranged on the outer side of the cohesive soil retaining soil table; one transverse drainage sand ditch is arranged on the side face of the upper platform face and located between the supporting piles and the cohesive soil indwelling soil table, and the other transverse drainage sand ditch is arranged on the lower platform face; and the plurality of water collecting wells are arranged at intervals along the transverse drainage sand ditch of the lower platform surface. The cohesive soil retaining platform is used for solving the technical problems that in the prior art, the cohesive soil retaining platform is poor in drainage performance, the strength of the soil platform is easily reduced due to long-time water accumulation, and even the soil platform collapses, so that the deformation of a support pile is too large, and greater dangerous cases are caused.

The utility model relates to the technical field of correcting instruments, and discloses a back supporting and posture correcting belt. The back support comprises a fabric layer and a wing-shaped supporting plate, and the fabric layer is used for making contact with the human body in an attached mode to increase the comfort degree; the number of the wing-shaped supporting plates is two, the two wing-shaped supporting plates are attached to the fabric layer in a bilateral symmetry mode, the wing-shaped supporting plates are used for being attached to and supported on the lower posterior saw muscle and the middle-lower erector spine muscle on the corresponding sides, and the two wing-shaped supporting plates cooperate to jointly support the spine from the two sides of the spine and limit the spine. The middle and lower erector spine muscles of the human body can be covered, the design of the wing shape conforms to the natural radian of the lumbar vertebra and fits the waist curve, necessary supporting force is provided for posterior sawed muscles, erector spine muscles and other peripheral muscular tissues, and the activity in other directions is not limited while the spine is supported and fixed; the supporting structure aims to solve the technical problems that an existing supporting structure of a posture correcting belt is insufficient in supporting strength, insufficient in lumbar vertebra covering and poor in biomechanical adaptability.

A circular saw blade (1) includes a disc-shaped base metal (2) having an outer diameter of 200 mm to 500 mm, and first tips (11) and second tips (13) arranged alternately along an outer circumference of the base metal (2). The circular saw blade (1) has a blade thickness (1a) of 0.8 mm to 2.0 mm. The first tips (11) and second tips (13) have cutting edges (11c, 13c) and a pair of chamfers (11f) at both ends of the cutting edges (1 1c,13c). A first groove (12) and a second groove (14) are formed in a flank so as to extend in a circumferential direction of the cutting edges (11c, 13c). The first groove (12) includes a first groove bottom (12e) that is deepest in a radial direction at a position of a first distance (13a) from a thickness center (7c) in a first thickness direction. The second groove (14) has a second groove bottom (14e) that is deepest in the radial direction at a position of a second distance (15b) from the thickness center (7c) in a second thickness direction opposite to the first thickness direction. A sum of the first distance (15a) and the second distance (15b) is 0.35 mm or less.

The utility model discloses a punching device for processing an outer door plate of a cab, and relates to the technical field of door plate processing, the punching device comprises a mounting rack, the top of the mounting rack is provided with a bidirectional adjusting guide rail, and the bidirectional adjusting guide rail is used for driving a drilling mechanism to adjust the position; the placing plate is mounted at the lower end of the inner side of the mounting frame and is used for placing an outer door plate; the clamping pieces are mounted on the mounting frame, and the two clamping pieces are matched to be used for clamping and limiting the outer door plate; and the drilling mechanism is mounted on the two-way adjusting guide rail on the mounting frame and is used for drilling the outer door plate. According to the punching device for machining the outer door plate of the cab, through transmission of the two-way adjusting guide rail and the gear and the rack, three-dimensional precise positioning of the drilling machine in the horizontal direction and the vertical direction is achieved, positioning errors are reduced, the limiting sleeve is matched with the fastening bolt, the drilling machine is effectively prevented from moving downwards due to vibration, the consistency of the hole diameter is ensured, and the punching device is particularly suitable for high-precision hole site machining.

The application provides a fuel cell engine shell vibration impact resistance performance improvement method, comprising the following steps: establishing a finite element mechanics performance simulation model; defining relative constraint position design parameters of the fuel cell engine shell; analyzing responses of the shell and the fuel cell stack finite element model under different test conditions; modifying each defined design parameter and simulating until a model response result set is obtained; combining structure and working characteristics of the fuel cell engine shell and the fuel cell stack, determining a vibration impact resistance performance evaluation index, establishing a link between the response result and the performance; screening to obtain a design parameter range meeting the requirements, determining an optimal design parameter combination according to the fuel cell stack response result; and obtaining a final shell structure after local adjustment of the shell structure. The application can improve the overall vibration impact resistance performance of the fuel cell engine.

The invention provides a gravity pile with an elastic supporting structure, and relates to the field of road safety protection facilities, the gravity pile comprises a gravity pile body, a containing cavity is formed in the bottom of the gravity pile body, and an elastic assembly capable of generating elastic deformation in the vertical direction is arranged in the containing cavity; the bottom face of the elastic assembly is used for generating friction force with the placing face of the gravity pile body. When the gravity pile body is in the air, the gravity pile body is separated from the placing surface, friction resistance of transverse deformation does not exist between the gravity pile body and the placing surface, but at the moment, the compressed elastic assembly can stretch, the bottom surface can make contact with the placing surface in an abutting mode, and equivalently, friction exists between the gravity pile and the road surface all the time; due to the fact that the bottom face of the elastic assembly abuts against the ground to generate friction, the transverse displacement amount of the gravity pile body under the action of impact force can be shortened, the occurrence probability of safety accidents is reduced, and the safety of structures and personnel on the back of the gravity pile is protected.

A seedling zone minimal tillage straw cleaning device is mounted in front of a seeding single body during working and is characterized by comprising a rotary cutter shaft, a left-handed straw cleaning spiral blade, a left-handed spiral soil crushing cutter, a stubble cutting disc, a right-handed spiral soil crushing cutter and a right-handed straw cleaning spiral blade, the stubble cutting disc is mounted on the rotary cutter shaft, and the left-handed spiral soil crushing cutter and the right-handed spiral soil crushing cutter are mounted on the rotary cutter shaft. A plurality of left-hand spiral soil breaking cutters and a plurality of right-hand spiral soil breaking cutters are symmetrically installed on the circumference of the rotary cutter shaft on the two sides of the stubble cutting disc, the left-hand spiral soil breaking cutters and the left-hand straw cleaning spiral blades are connected into an integrated spiral structure, and the right-hand spiral soil breaking cutters and the right-hand straw cleaning spiral blades are connected into an integrated spiral structure. And the rear output power of the tractor is connected with and drives the rotary cutter shaft to operate through the gearbox. Corn stubbles are cut through the stubble cutting disc, straw of a seedling belt is cut off through the left-handed spiral soil breaking cutter and the right-handed spiral soil breaking cutter, the straw is transversely conveyed to the two sides, and the straw is pushed to at least the two sides of the seedling cultivating belt under the combined action of the left-handed straw cleaning spiral blade and the right-handed straw cleaning spiral blade.

The application discloses an assembled self-resetting energy dissipation bridge block, which comprises a block, wherein the block is connected to the outrigger of the cap beam on both sides through prestressed reinforcement, a damper is connected between the side surface of the block and the side surface of the cap beam body, a rubber pad is connected to the upper part of the side surface of the block, and the rubber pad is arranged on the side surface of the beam body above the cap beam. The assembled block is used to replace the fixed block, the block is arranged at the outrigger of the cap beam, the block and the outrigger of the cap beam are connected through the prestressed reinforcement, a disc spring is arranged at the top end anchoring position of the prestressed reinforcement, the tensioning of the prestressed reinforcement is realized, the installation stability of the block is ensured, the lower part of the side surface of the block is connected to the cap beam body through the U-shaped damper, and the rubber pad is arranged on the upper part of the side surface of the block. The transverse displacement of the block is effectively reduced, the damper can drive the block to reset, the residual deformation caused by vibration is reduced, the impact of the upper beam body structure on the block is buffered, and the self-resetting capacity of the whole anti-seismic block system is improved.

The present invention relates to an improved aluminum alloy building I-beam aluminum connection structure, comprising more than two I-beam aluminum components, a triangular connection plate, a lap plate, a bottom cross beam and a fixed connection piece. The triangular connection plate is fixedly installed with an angle lap plate on a plane close to the root of the connection part, the upward connection part of the triangular connection plate is inserted from the cut connection end of the first I-beam aluminum component into the I-beam aluminum groove for fixing, and the lateral connection part of the triangular connection plate is inserted from the cut connection end of the second I-beam aluminum component into the I-beam aluminum groove for fixing, thereby splicing into an angle shape, and then inserting the bottom cross beam laterally, and inserting a long bolt into the side plate screw hole of the first I-beam aluminum component, the bottom cross beam plate wall screw hole to the connecting plate screw hole at the other end of the lap plate and fixing it. The present invention solves the problem of integrated installation of components in the X, Y, and Z axis directions, realizes two-dimensional and three-dimensional connection of I-beam aluminum components, and has extremely strong stability.

The present application relates to the technical field of bridge seismic resistance, and particularly relates to an anti-seismic block structure and a bridge anti-seismic block system. Under the action of transverse bridge seismic force, the main beam moves along the transverse bridge direction with the fixed block, and the fixed block contacts with the sliding block during the movement, and pushes the sliding block to move on the base friction surface. Since the sliding block is in contact pressure with the base friction surface, the friction force generated will hinder the transverse movement of the main beam, so as to achieve the purpose of limiting the transverse movement of the bridge main beam. The friction force generated by the movement of the sliding block on the base friction surface dissipates the seismic energy, and reduces the transverse displacement of the main beam. Then, the limiting block is used for the final limiting. The cooperation of the two hindering structures makes the speed of the main beam continuously decrease during the transverse movement, so as to control the horizontal collision force generated on the limiting block. The size of the friction force generated during the transverse movement can be adjusted through the geometric form of the base friction surface and the friction coefficient, so as to reduce the horizontal shear force transmitted to the pier, and realize the control of the seismic response of the pier.

The present invention discloses an out-of-plane freely deformable wind-resistant support, comprising an end node, an oblique support and a central wind-resistant node, wherein one end of the oblique support is connected to the end node, and the other end is connected to the central wind-resistant node, and the end node steel plate in the end node is embedded and installed in the main body of the building, and all the end nodes form a support surface, and the central wind-resistant node is located outside the support surface, and the overall shape of the support is similar to an "X" shape. Under the action of temperature, the end node steel plate in the end node generates out-of-plane bending deformation, and the central wind-resistant steel plate generates out-of-plane offset, so as to realize the function of free deformation out of the support plane and enhance its ability to adapt to temperature changes; at the same time, under the action of wind load, the building structure generates lateral displacement, and the wind-resistant steel plate with a certain rigidity can provide sufficient lateral rigidity for the building structure, thereby reducing the structural displacement under the action of wind load.