23results about How to "Improve dynamic stiffness" patented technology

The invention provides a cabin and front floor force transmission structure and a vehicle. The engine room and front floor force transmission structure comprises two side force transmission paths arranged in parallel, and each side force transmission path comprises a front longitudinal beam assembly, a front longitudinal beam rear body assembly, a threshold assembly, a floor longitudinal beam assembly and a middle channel. The front longitudinal beam rear body assembly comprises a front connecting part and three rear connecting parts, and the front connecting part is connected with the front longitudinal beam assembly. The three rear connecting parts comprise the first rear connecting part, the second rear connecting part and the third rear connecting part, and the first rear connecting part, the second rear connecting part and the third rear connecting part are connected with the doorsill assembly, the floor longitudinal beam assembly and the middle channel respectively. Loads can be effectively dispersed through the side force transmission paths arranged in parallel, and the dynamic stiffness is improved. Meanwhile, the connecting structures between the front longitudinal beam rear body assembly and the doorsill, the floor longitudinal beam and the middle channel are simple.

The utility model discloses a cross-shaped rear wheel cover and shock absorber installation plate supporting structure and a vehicle body, and relates to the field of vehicle body structures, the cross-shaped rear wheel cover and shock absorber installation plate supporting structure comprises a rear shock absorber support reinforcing piece, a rear wheel cover first reinforcing piece, a rear longitudinal beam connecting plate and a rear shock absorber support, the rear shock absorber support reinforcing piece, the rear wheel cover inner plate and the rear wheel cover first reinforcing piece are provided with first welding spots in the Y direction, and the rear shock absorber support reinforcing piece, the rear wheel cover inner plate and the rear longitudinal beam connecting plate are provided with second welding spots in the Y direction. The rear shock absorber mounting plate nut plate is arranged on the outer side of the rear wheel cover inner plate, and the rear shock absorber mounting plate nut plate, the rear wheel cover inner plate and the rear wheel cover first reinforcing piece are provided with third welding spots in the Y direction; fourth welding spots are arranged on the rear shock absorber mounting plate, the rear wheel cover inner plate and the rear wheel cover first reinforcing piece in the Y direction; all the welding spots are three-layer plate welding spots; the rear wheel cover first reinforcing piece is connected with the rear longitudinal beam connecting plate through an X-direction welding spot.

The utility model discloses an automobile auxiliary frame installation hole reinforcing structure which is installed in an automobile body longitudinal beam and comprises a first reinforcing piece and a second reinforcing piece, turnups are arranged on the multiple edges of the first reinforcing piece and welded to the interior of the automobile body longitudinal beam, an installation hole is formed in the upper surface of the first reinforcing piece, and the installation hole is formed in the lower surface of the second reinforcing piece. The second reinforcer is arranged at the bottom of the first reinforcer, a plurality of edges of the second reinforcer form turned-over edges, and the turned-over edges are welded to the vehicle body longitudinal beam and the first reinforcer. Effective support is provided at the mounting hole of the auxiliary frame through the first reinforcing piece, the second reinforcing piece and the flanging, the dynamic stiffness of the mounting hole of the auxiliary frame can be effectively improved, vibration transmitted to a vehicle body through the mounting hole of the auxiliary frame is reduced, the problem that comfort is reduced due to noise vibration of the vehicle is solved, and the service life of the vehicle is prolonged. And the use experience is effectively improved.

The utility model provides an auxiliary frame and a vehicle, the auxiliary frame is provided with auxiliary frame longitudinal beams arranged on the left side and the right side respectively, a first cross beam and a second cross beam, the first cross beam and the second cross beam are connected between the auxiliary frame longitudinal beams on the two sides, and in the front-back direction of the whole vehicle, the second cross beam is located behind the first cross beam; a power assembly front suspension mounting part is arranged on the first cross beam, a power assembly rear suspension mounting part is arranged on the second cross beam, a first cross beam reinforcing structure is arranged in the first cross beam, and a second cross beam reinforcing structure is arranged in the second cross beam. According to the auxiliary frame, due to the arrangement of the first cross beam reinforcing structure in the first cross beam and the second cross beam reinforcing structure in the second cross beam, the structural strength of the two cross beams can be improved, the overall rigidity of the auxiliary frame and the dynamic rigidity of a power assembly suspension mounting point can be improved, and the use quality of the auxiliary frame can be improved.

The invention discloses an electric drive assembly suspension lining and a vehicle, the electric drive assembly suspension lining comprises a movable main side support and a vehicle body side support, the movable main side support and the vehicle body side support are connected with a connecting bolt, a suspension cushion assembly is arranged in the vehicle body side support, the suspension cushion assembly comprises an outer pipe and an inner core, and the outer pipe is connected with the inner core. The electric drive assembly suspension bushing has the advantages that the vibration isolation capacity is reliable, the riding comfort of a vehicle can be improved, and the electric drive assembly suspension bushing is compact in structure.

The utility model discloses a suspension support and a vehicle with the suspension support. The suspension support comprises a support body and a reinforcing plate. The support body comprises two first support sections and a second support section, the second support section is connected between the two first support sections, each first support section extends in the thickness direction of the second support section, each first support section is provided with a first bent part, and the first bent parts extend in the direction away from the second support section. One end of the second support section in the length direction is provided with an extending part which is suitable for being in lap joint with a frame. The reinforcing plate is arranged on the side, away from the second support section, of the first bent part, one end of the reinforcing plate is connected with the first bent part, and the other end of the reinforcing plate is suitable for being connected with a frame. According to the suspension support, the dynamic stiffness of the support body is enhanced, the connecting strength of the support body and the vehicle frame is improved, the influence of resonance of the support body and the vehicle frame on the whole vehicle is relieved, the structural stability of the support body and the vehicle frame is improved, and the running stability of the vehicle is improved.

The application discloses a kind of multi-in-one integrated electric drive, noise reduction design method and electric forklift in the field of electric forklift integrated electric drive.The multi-in-one integrated electric drive includes two-in-one high-speed reducer, the two-in-one high-speed reducer includes reducer shell, walking gear train and hydraulic gear train, first chamber and second chamber are formed in reducer shell independently, by walking gear train and hydraulic gear train are respectively arranged in first chamber and second chamber, can effectively avoid the loss of two simultaneous work stirring oil turbulence.Through setting stator installation stopper, rotor installation bearing chamber and bolt hole in the side of reducer shell, walking motor and hydraulic motor are simultaneously integrated and installed on reducer shell, the front end cover of motor in traditional forklift multi-in-one assembly is saved, effectively save forklift installation space.The noise reduction design method proposed in the application can significantly improve the NVH performance of integrated electric drive.

The invention discloses a rear suspension mounting structure and a vehicle, and the rear suspension mounting structure comprises a rear suspension outer plate assembly which is provided with a rear suspension mounting hole; the rear suspension inner plate is arranged on one side of the rear suspension outer plate assembly, a rear suspension nut sleeve assembly is arranged between the rear suspension inner plate and the rear suspension outer plate assembly, the rear suspension nut sleeve assembly and the rear suspension mounting holes are arranged in a one-to-one correspondence mode, and a first cavity is formed between the rear suspension inner plate and the rear suspension outer plate assembly; the mounting directions of the at least two rear suspension nut sleeve assemblies are perpendicular to each other; the rear wall lower reinforcing beam is arranged on the side, back to the rear suspension outer plate assembly, of the rear suspension inner plate and covers the two rear suspension nut sleeve assemblies located on the upper portion, and a second cavity is formed between the rear wall lower reinforcing beam and the rear suspension inner plate. The two cavity structures are arranged at the mounting position, so that the whole rear suspension mounting structure is of a box body structure, the requirement for the thickness of a plate is not high on the premise that the requirement for dynamic stiffness is met, and therefore the vehicle weight can be reduced, and the requirement for light weight of the vehicle is met.

The utility model relates to the technical field of unmanned plane, concretely provides unmanned plane vibration suppression method and structure based on local area resonance metamaterial, including main body arch frame and shallow arch curved beam, the curved inside of shallow arch curved beam with the curved inside of main body arch frame opposite setting, the both ends of shallow arch curved beam with the curved inside of main body arch frame fixed connection and form the quasi zero stiffness single oscillator with integrated structure, the end face of main body arch frame both ends is in the same plane, the position of end face of main body arch frame both ends close to the center still is provided with screw hole, through setting up curved beam combination oscillator with shallow arch curved beam, solved the problem that unmanned plane traditional oscillator is difficult to realize low inherent frequency vibration isolation and poor spatial adaptability.

This invention provides an ACU mounting bracket, a floor structure, and an automobile. The ACU mounting bracket includes a saddle-shaped bracket body with multiple ACU mounting points. It has an arched structure in the longitudinal direction, with the ACU mounting points located at the highest points of the arch. The front of the bracket body has a flanged surface for connection to the vehicle's floor structure. The floor structure includes a front floor, a left reinforcing beam for the central channel located on the left side of the front floor, a right reinforcing beam for the central channel located on the right side of the front floor, and an ACU mounting bracket spanning between the left and right reinforcing beams. This invention significantly improves the dynamic stiffness of the ACU mounting points through a three-cavity structure design, enhances the overall strength of the bracket through a double-arch structure and multiple reinforcing ribs, and improves structural stability by creating a full-cycle connection between the bracket and the vehicle body through the flanged surface design.

The invention provides an ACU mounting bracket, a floor structure and an automobile. The ACU installation support comprises a saddle-shaped support body, the support body is provided with a plurality of ACU installation points and is of an arch structure in the longitudinal cutting direction, the ACU installation points are arranged at the high positions of the arch, and the front portion of the support body is provided with a flanging face used for being connected with a vehicle body floor structure. The floor structure comprises a front floor, a middle channel left reinforcing beam arranged on the left side of the middle of the front floor, a middle channel right reinforcing beam arranged on the right side of the middle of the front floor, and an ACU installation support arranged between the middle channel left reinforcing beam and the middle channel right reinforcing beam in a crossing mode. The dynamic stiffness of an ACU mounting point is remarkably improved through the design of the three-cavity structure, the overall strength of the support is improved through the design of the double-arch structure and the multiple reinforcing ribs, the support and a vehicle body are connected in a complete period through the design of the turnup face, and the stability of the structure is improved.

The utility model discloses a Panhard rod mounting bracket and an automobile. The Panhard rod mounting bracket comprises a mounting frame and at least one supporting leg, a mounting hole is formed in one end of the mounting frame, the axis of the mounting hole is parallel to the X direction of the automobile, the mounting hole is used for being connected with a Panhard rod, and the other end of the mounting frame is used for being connected with an automobile frame; the supporting leg is provided with a first end and a second end, the first end is connected with the mounting frame, and the second end is used for being connected with the frame; the second end and the frame are connected to a first connecting position, the mounting frame and the frame are connected to a second connecting position, and the first connecting position and the second connecting position are distributed front and back. When the Panhard rod mounting bracket is applied, the dynamic stiffness of the Panhard rod mounting bracket in the X direction can be improved, the vibration transmission rate of a Panhard rod transmission path is reduced, the vibration attenuation capacity of the Panhard rod transmission path is improved, and vibration noise transmitted to a vehicle body by an axle through a Panhard rod can be effectively attenuated.

The application discloses a leaf spring bearing point vehicle body reinforcing structure, which comprises a rear longitudinal beam body, a leaf spring hanging front support arranged on the rear longitudinal beam body and a reinforcing pipe beam arranged on the leaf spring hanging front support; the reinforcing pipe beam is transversely arranged and penetrates through the mounting holes of the left and right leaf spring hanging front supports, and the two ends of the reinforcing pipe beam are respectively welded and fixedly connected with the left and right leaf spring hanging front supports, and the reinforcing pipe beam is located below the rear longitudinal beam body. The leaf spring bearing point vehicle body reinforcing structure of the application can improve the overall performance by optimizing the design of the vehicle body reinforcing structure, improve the overall dynamic stiffness of the vehicle body, strengthen the fatigue resistance and dynamic stability of the mounting point area, and meet the high performance requirements of commercial vehicles on the leaf spring system mounting point. The application further discloses a vehicle and a manufacturing method of the leaf spring bearing point vehicle body reinforcing structure.

The invention provides a vehicle body and a vehicle. The vehicle body comprises a lower vehicle body and a battery pack connected to the bottom of the lower vehicle body, and the lower vehicle body is provided with a rear floor lower cross beam, threshold beams arranged on the two sides of the lower vehicle body respectively and a torsion box connected to the rear end of a front cabin longitudinal beam; a cabin rear section cross beam is arranged between the torsion boxes on the two sides, and the rear floor lower cross beam, the cabin rear section cross beam, the threshold beams on the two sides and the torsion boxes are connected to form an annular structure. The battery pack is arranged in the annular structure, mounting lifting lugs are arranged on the left side and the right side of the battery pack, the mounting lifting lugs on the sides are connected with the doorsill beam, and the mounting lifting lugs on the two sides form side collision energy absorption structures located on the left side and the right side of the battery pack. According to the vehicle body of the vehicle, the formed annular structure can be used for reinforcing the vehicle body, deformation caused by extrusion during collision of the battery pack is avoided, collision impact on the battery pack can be relieved through collapse energy absorption of the mounting lifting lugs during side collision, and the safety of the battery pack can be improved.

The invention discloses a vehicle frame structure, a vehicle body and a vehicle, the vehicle frame structure comprises a longitudinal structure assembly, the longitudinal structure assembly comprises a longitudinal beam assembly, the longitudinal beam assembly comprises a first longitudinal beam and a second longitudinal beam located on the lower side of the first longitudinal beam, and the first longitudinal beam and the second longitudinal beam extend in the first direction; the supporting piece is arranged between the first longitudinal beam and the second longitudinal beam, and at least one of the first longitudinal beam and the second longitudinal beam is connected with the supporting piece through a detachable structure. According to the technical scheme, due to the fact that the longitudinal beam assembly forms the double-longitudinal-beam structure, and the first longitudinal beam, the second longitudinal beam and the supporting piece form the I-shaped structure, the stability and the reliability of the longitudinal structure assembly are good, and therefore the strength and the rigidity of the frame structure can be improved, the overall dynamic stiffness of the frame structure can be improved, and then the overall dynamic stiffness of the frame structure can be improved. The first longitudinal beams and / or the second longitudinal beams can be separated from the supporting pieces to unload force, and therefore a good energy absorption effect is achieved.

The utility model belongs to the technical field of automobile parts, and provides an air filter air inlet pipe support and a vehicle, the air inlet pipe support comprises a support body, the support body comprises a first installation face, the first installation face is connected with a vehicle body, and the middle of the first installation face protrudes upwards to form a boss structure on the support body; a second mounting surface is arranged on the boss structure, the middle part of the second mounting surface is a concave surface, the concave surface forms a mounting position for accommodating the air inlet pipe, and two sides of the concave surface are connecting surfaces for being connected with the air inlet pipe; the problems that in the prior art, an air inlet pipe support is insufficient in rigidity and low in modal frequency, resonance of the support and a vehicle body rear wall metal plate is caused, noise is generated, and the driving comfort of a user is affected are solved, the dynamic rigidity of the air inlet pipe support is improved, the risk of coupling of the air inlet pipe support and an air inlet system acoustic cavity mode and the risk of coupling of the vehicle body rear wall plate and an in-vehicle acoustic cavity mode are reduced, and the user experience is improved. Resonance of the air inlet pipe support and the automobile body rear wall metal plate is reduced, generated noise is reduced, and driving comfort is improved.

The invention provides an automobile body and an automobile. The automobile body comprises a rear floor lower cross beam located at the bottom of a rear floor assembly, threshold beams arranged on the left side and the right side correspondingly, and torsion boxes connected to the rear ends of front cabin longitudinal beams on the left side and the right side correspondingly. The rear floor lower cross beam is in a C shape with a forward opening, and the left side and the right side of the rear floor lower cross beam are connected with the rear ends of the doorsill beams on the corresponding sides respectively. The torsion box on each side is connected with the front end of the threshold beam on the same side, and a cabin rear section cross beam is connected between the torsion boxes on the two sides; the rear floor lower cross beam, the cabin rear section cross beam, the doorsill beams on the two sides and the torsion box are connected to form an annular structure. According to the automobile body of the automobile, the strength and rigidity of the front portion of the rear floor assembly can be improved, the structural strength and torsional rigidity of the bottom of the automobile body can be improved, an annular force transmission channel is formed in the bottom of the automobile body, transmission and dispersion of collision force are facilitated, and the collision safety of the whole automobile is improved.

The present invention relates to a double vertical clamping structure of a double worm gear flying cutter, wherein a center hole concentric with the cutter rod is provided at the passive end of the cutter rod, two parallel connecting through holes for installing and tightening the flying cutter are provided radially, and are connected with the center hole, and the center distance thereof is the axial pitch of a working worm, and planes are provided at both ends of the connecting through hole, and a tightening screw is provided on the plane on the same side, and is connected with a screw hole on a straight handle of the flying cutter, and a positioning clamping mechanism is provided in the center hole, and a force-applying component, a plurality of round balls, a positioning push rod, a flying cutter, an elastic push rod, etc. are provided in sequence from the end face of the passive end, and under the action of the tightening screw and the force-applying component, the opposite end oblique end face of the positioning push rod slides to the oblique flat plane of the straight handle of the flying cutter to form a close surface contact, and the two flying cutters are fastened in the corresponding connecting through holes, so that the cutting edge part of the flying cutter is in the same position as the working worm. This positioning and double vertical clamping technical scheme is suitable for rolling cutting of multi-head worm wheels with large cutting force, modulus and lead angle.

The invention discloses a power assembly right suspension device which comprises a right suspension shell, an installation structure arranged on the right suspension shell and a third point support connected with the installation structure, and the third point support is installed on the installation structure in a pressed mode. According to the power assembly right suspension device, the dynamic stiffness of the support is improved, and meanwhile, the NVH performance of the whole vehicle can be optimized. The invention further discloses an assembling method of the power assembly right suspension device and a vehicle.

The invention relates to the technical field of auxiliary frames, and discloses an auxiliary frame assembly and a vehicle, the auxiliary frame assembly comprises a cross beam body, a suspension support and two longitudinal beam assemblies, in the first direction, the cross beam body is fixedly connected between the two longitudinal beam assemblies, a first cavity is formed in the suspension support, the first cavity is provided with a first opening, and in the second direction, the cross beam body is fixedly connected between the two longitudinal beam assemblies; the projection of the first opening is located outside the cross beam body, the cross beam body comprises a cross beam upper plate and a cross beam lower plate, the cross beam upper plate is fixedly connected with the cross beam lower plate in a buckled mode, the suspension support is fixedly installed on the cross beam body, and in the second direction, part of the suspension support protrudes out of the cross beam lower plate; the upper beam plate, the lower beam plate and the suspension support jointly form a second cavity separated from the first cavity, and the first direction is perpendicular to the second direction. Therefore, a multi-cavity structure of the cross beam body and the suspension support is achieved, and the overall dynamic stiffness of the auxiliary frame assembly can be improved.

The invention relates to a front windshield cross beam, a vehicle body front end assembly and a vehicle, the front windshield cross beam comprises a cross beam buffer plate and a cross beam supporting plate which are connected, the cross beam buffer plate has first rigidity, the cross beam supporting plate has second rigidity, the first rigidity is smaller than the second rigidity, and the second rigidity is smaller than the first rigidity. And the cross beam buffer plate is positioned above the cross beam supporting plate. The cross beam buffering plate and the cross beam supporting plate form a buffering layer and supporting layer two-layer gradient design structure, the cross beam buffering plate serving as the first buffering layer can absorb collision energy to deform and collapse, head injuries of pedestrians are reduced to the maximum extent, and the requirements of pedestrian collision laws and regulations are met; the cross beam supporting plate serves as a second supporting layer, the dynamic stiffness and the modal of the front windshield cross beam are improved, the stiffness requirement and the modal requirement of NVH on the front windshield cross beam can be met, and therefore the front windshield cross beam integrates the pedestrian safety performance and the NVH performance.

This application relates to the field of vehicle chassis technology and provides an exhaust hanger and a vehicle equipped with it. The exhaust hanger of this application includes a hanger bracket and a rubber body fixed to the hanger bracket. The hanger bracket has a first connecting portion and a deformable portion. The first connecting portion is used to connect to the vehicle body, and the deformable portion is formed by a part of the hanger bracket. The rubber body has a second connecting portion for connecting to the exhaust system. The deformable portion is located above the rubber body and is adapted to elastically deform when the rubber body is subjected to an impact load greater than a set threshold. The exhaust hanger of this application enables the exhaust hanger stiffness to adaptively increase with the load frequency, while also avoiding damage to the rubber body structure caused by high-intensity loads, thereby improving its performance.

The application relates to the technical field of ultra-precision machining equipment, in particular to a gas bearing assembly and a gas-floating motorized spindle with the same, which comprises an outer shell and a radial gas bearing arranged in the outer shell, a ring-shaped air inlet groove is arranged on the inner wall of the outer shell and corresponds to the position of the radial gas bearing, a closed air inlet cavity is formed between the ring-shaped air inlet groove and the outer cylindrical surface of the radial gas bearing, a plurality of air inlet holes which are in communication with the air inlet cavity are circumferentially distributed on the outer cylindrical surface of the radial gas bearing, a throttling hole which is in communication with the air inlet hole is arranged on the inner cylindrical surface of the radial gas bearing, and a composite pressure equalizing structure which is in communication with the throttling hole; the composite pressure equalizing structure comprises at least one circumferential pressure equalizing groove and at least one axial pressure equalizing groove, and the circumferential pressure equalizing groove is a discontinuous structure which is discontinuous along the circumferential direction. The radial gas bearing is designed as a two-section type and an intermediate air outlet structure, the composite pressure equalizing groove which is combined with the circumferential discontinuous structure and the axial communication structure optimizes the pressure field distribution, suppresses the radial runout of the spindle rotor, and thus the supporting stiffness and the machining precision are improved.